From ead837174d265b24334f0721a84cbdda8ccd89a7 Mon Sep 17 00:00:00 2001 From: John Rose Date: Fri, 4 Nov 2005 15:30:56 -0600 Subject: [PATCH] dlpar enable for OF pci probe This patch contains the arch/ppc64 bits for enabling DLPAR and PCI Hotplug for the new OF-based PCI probe mechanism. This code path is currently broken. Signed-off-by: John Rose Signed-off-by: Paul Mackerras diff --git a/arch/ppc64/kernel/pci.c b/arch/ppc64/kernel/pci.c index 3d2106b..30247ff 100644 --- a/arch/ppc64/kernel/pci.c +++ b/arch/ppc64/kernel/pci.c @@ -295,8 +295,8 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev) } } -static struct pci_dev *of_create_pci_dev(struct device_node *node, - struct pci_bus *bus, int devfn) +struct pci_dev *of_create_pci_dev(struct device_node *node, + struct pci_bus *bus, int devfn) { struct pci_dev *dev; const char *type; @@ -354,10 +354,9 @@ static struct pci_dev *of_create_pci_dev(struct device_node *node, return dev; } +EXPORT_SYMBOL(of_create_pci_dev); -static void of_scan_pci_bridge(struct device_node *node, struct pci_dev *dev); - -static void __devinit of_scan_bus(struct device_node *node, +void __devinit of_scan_bus(struct device_node *node, struct pci_bus *bus) { struct device_node *child = NULL; @@ -381,9 +380,10 @@ static void __devinit of_scan_bus(struct device_node *node, do_bus_setup(bus); } +EXPORT_SYMBOL(of_scan_bus); -static void __devinit of_scan_pci_bridge(struct device_node *node, - struct pci_dev *dev) +void __devinit of_scan_pci_bridge(struct device_node *node, + struct pci_dev *dev) { struct pci_bus *bus; u32 *busrange, *ranges; @@ -464,9 +464,10 @@ static void __devinit of_scan_pci_bridge(struct device_node *node, else if (mode == PCI_PROBE_NORMAL) pci_scan_child_bus(bus); } +EXPORT_SYMBOL(of_scan_pci_bridge); #endif /* CONFIG_PPC_MULTIPLATFORM */ -static void __devinit scan_phb(struct pci_controller *hose) +void __devinit scan_phb(struct pci_controller *hose) { struct pci_bus *bus; struct device_node *node = hose->arch_data; diff --git a/arch/ppc64/kernel/rtas_pci.c b/arch/ppc64/kernel/rtas_pci.c index 3ad15c9..3c3f191 100644 --- a/arch/ppc64/kernel/rtas_pci.c +++ b/arch/ppc64/kernel/rtas_pci.c @@ -440,7 +440,6 @@ struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn) struct device_node *root = of_find_node_by_path("/"); unsigned int root_size_cells = 0; struct pci_controller *phb; - struct pci_bus *bus; int primary; root_size_cells = prom_n_size_cells(root); @@ -456,10 +455,7 @@ struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn) of_node_put(root); pci_devs_phb_init_dynamic(phb); - phb->last_busno = 0xff; - bus = pci_scan_bus(phb->first_busno, phb->ops, phb->arch_data); - phb->bus = bus; - phb->last_busno = bus->subordinate; + scan_phb(phb); return phb; } diff --git a/include/asm-powerpc/ppc-pci.h b/include/asm-powerpc/ppc-pci.h index a88728f..13aacff 100644 --- a/include/asm-powerpc/ppc-pci.h +++ b/include/asm-powerpc/ppc-pci.h @@ -34,6 +34,7 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre, void pci_devs_phb_init(void); void pci_devs_phb_init_dynamic(struct pci_controller *phb); +void __devinit scan_phb(struct pci_controller *hose); /* PCI address cache management routines */ void pci_addr_cache_insert_device(struct pci_dev *dev); diff --git a/include/asm-ppc64/pci.h b/include/asm-ppc64/pci.h index 342e2d7..fafdf88 100644 --- a/include/asm-ppc64/pci.h +++ b/include/asm-ppc64/pci.h @@ -162,6 +162,14 @@ pcibios_fixup_device_resources(struct pci_dev *dev, struct pci_bus *bus); extern struct pci_controller *init_phb_dynamic(struct device_node *dn); +extern struct pci_dev *of_create_pci_dev(struct device_node *node, + struct pci_bus *bus, int devfn); + +extern void of_scan_pci_bridge(struct device_node *node, + struct pci_dev *dev); + +extern void of_scan_bus(struct device_node *node, struct pci_bus *bus); + extern int pci_read_irq_line(struct pci_dev *dev); extern void pcibios_add_platform_entries(struct pci_dev *dev); -- cgit v0.10.2 From 9d2ba6faa1c2e10546a4bdf0f9687436d7681b2f Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 5 Nov 2005 17:54:22 +0000 Subject: [PATCH] powerpc: Fix i8259 cascade IRQ setup_irq() aborts immediately if there's no handler for the IRQ in question. So i8259_init() should set up its handlers before trying to set up the cascade on IRQ 2. With this and the patch I sent a few days ago to fix initrd on ppc32, my Pegasos now runs the arch/powerpc kernel. Signed-off-by: David Woodhouse Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c index 90bce6e..b7ac32f 100644 --- a/arch/powerpc/sysdev/i8259.c +++ b/arch/powerpc/sysdev/i8259.c @@ -207,6 +207,9 @@ void __init i8259_init(unsigned long intack_addr, int offset) spin_unlock_irqrestore(&i8259_lock, flags); + for (i = 0; i < NUM_ISA_INTERRUPTS; ++i) + irq_desc[offset + i].handler = &i8259_pic; + /* reserve our resources */ setup_irq(offset + 2, &i8259_irqaction); request_resource(&ioport_resource, &pic1_iores); @@ -216,6 +219,4 @@ void __init i8259_init(unsigned long intack_addr, int offset) if (intack_addr != 0) pci_intack = ioremap(intack_addr, 1); - for (i = 0; i < NUM_ISA_INTERRUPTS; ++i) - irq_desc[offset + i].handler = &i8259_pic; } -- cgit v0.10.2 From c6d95044a2e124b606b78896a3a2d512e90ef65c Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Sat, 5 Nov 2005 13:01:16 -0200 Subject: [PATCH] ppc32 8xx: fix m8xx_wdt accessor macro update The following patch against m8xx_wdt.c adds (required for out,in_be32/16) and fixes syntatic problems introduced with the IO accessor macro update. Signed-off-by: Marcelo Tosatti Signed-off-by: Paul Mackerras diff --git a/arch/ppc/syslib/m8xx_wdt.c b/arch/ppc/syslib/m8xx_wdt.c index c5ac5ce..a21632d 100644 --- a/arch/ppc/syslib/m8xx_wdt.c +++ b/arch/ppc/syslib/m8xx_wdt.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -29,8 +30,8 @@ void m8xx_wdt_reset(void) { volatile immap_t *imap = (volatile immap_t *)IMAP_ADDR; - out_be16(imap->im_siu_conf.sc_swsr, 0x556c); /* write magic1 */ - out_be16(imap->im_siu_conf.sc_swsr, 0xaa39); /* write magic2 */ + out_be16(&imap->im_siu_conf.sc_swsr, 0x556c); /* write magic1 */ + out_be16(&imap->im_siu_conf.sc_swsr, 0xaa39); /* write magic2 */ } static irqreturn_t m8xx_wdt_interrupt(int irq, void *dev, struct pt_regs *regs) @@ -39,7 +40,7 @@ static irqreturn_t m8xx_wdt_interrupt(int irq, void *dev, struct pt_regs *regs) m8xx_wdt_reset(); - out_be16(imap->im_sit.sit_piscr, in_be16(imap->im_sit.sit_piscr | PISCR_PS)); /* clear irq */ + out_be16(&imap->im_sit.sit_piscr, in_be16(&imap->im_sit.sit_piscr) | PISCR_PS); /* clear irq */ return IRQ_HANDLED; } @@ -51,7 +52,7 @@ void __init m8xx_wdt_handler_install(bd_t * binfo) u32 sypcr; u32 pitrtclk; - sypcr = in_be32(imap->im_siu_conf.sc_sypcr); + sypcr = in_be32(&imap->im_siu_conf.sc_sypcr); if (!(sypcr & 0x04)) { printk(KERN_NOTICE "m8xx_wdt: wdt disabled (SYPCR: 0x%08X)\n", @@ -87,9 +88,9 @@ void __init m8xx_wdt_handler_install(bd_t * binfo) else pitc = pitrtclk * wdt_timeout / binfo->bi_intfreq / 2; - out_be32(imap->im_sit.sit_pitc, pitc << 16); + out_be32(&imap->im_sit.sit_pitc, pitc << 16); - out_be16(imap->im_sit.sit_piscr, (mk_int_int_mask(PIT_INTERRUPT) << 8) | PISCR_PIE | PISCR_PTE); + out_be16(&imap->im_sit.sit_piscr, (mk_int_int_mask(PIT_INTERRUPT) << 8) | PISCR_PIE | PISCR_PTE); if (setup_irq(PIT_INTERRUPT, &m8xx_wdt_irqaction)) panic("m8xx_wdt: error setting up the watchdog irq!"); -- cgit v0.10.2 From 55b6332ec89a5fc65d1287708cfd9f06f7a88b90 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Sat, 5 Nov 2005 14:06:24 -0200 Subject: [PATCH] ppc32: handle access to non-present IO ports on 8xx This adds exception table entries for I/O instructions on and changes MachineCheckException() slightly to cover 8xx specifics (on 8xx the MCE can be generated while executing the IO access instruction itself, which is not the case on PowerMac's, as the comment on traps.c details). Signed-off-by: Marcelo Tosatti Signed-off-by: Paul Mackerras diff --git a/arch/ppc/kernel/misc.S b/arch/ppc/kernel/misc.S index 3056ede..ae6af29 100644 --- a/arch/ppc/kernel/misc.S +++ b/arch/ppc/kernel/misc.S @@ -25,6 +25,11 @@ #include #include +#ifdef CONFIG_8xx +#define ISYNC_8xx isync +#else +#define ISYNC_8xx +#endif .text .align 5 @@ -800,8 +805,18 @@ _GLOBAL(_insb) subi r4,r4,1 blelr- 00: lbz r5,0(r3) - eieio - stbu r5,1(r4) +01: eieio +02: stbu r5,1(r4) + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -811,8 +826,18 @@ _GLOBAL(_outsb) subi r4,r4,1 blelr- 00: lbzu r5,1(r4) - stb r5,0(r3) - eieio +01: stb r5,0(r3) +02: eieio + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -822,8 +847,18 @@ _GLOBAL(_insw) subi r4,r4,2 blelr- 00: lhbrx r5,0,r3 - eieio - sthu r5,2(r4) +01: eieio +02: sthu r5,2(r4) + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -833,8 +868,18 @@ _GLOBAL(_outsw) subi r4,r4,2 blelr- 00: lhzu r5,2(r4) - eieio - sthbrx r5,0,r3 +01: eieio +02: sthbrx r5,0,r3 + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -844,8 +889,18 @@ _GLOBAL(_insl) subi r4,r4,4 blelr- 00: lwbrx r5,0,r3 - eieio - stwu r5,4(r4) +01: eieio +02: stwu r5,4(r4) + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -855,8 +910,18 @@ _GLOBAL(_outsl) subi r4,r4,4 blelr- 00: lwzu r5,4(r4) - stwbrx r5,0,r3 - eieio +01: stwbrx r5,0,r3 +02: eieio + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -867,8 +932,18 @@ _GLOBAL(_insw_ns) subi r4,r4,2 blelr- 00: lhz r5,0(r3) - eieio - sthu r5,2(r4) +01: eieio +02: sthu r5,2(r4) + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -879,8 +954,18 @@ _GLOBAL(_outsw_ns) subi r4,r4,2 blelr- 00: lhzu r5,2(r4) - sth r5,0(r3) - eieio +01: sth r5,0(r3) +02: eieio + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -891,8 +976,18 @@ _GLOBAL(_insl_ns) subi r4,r4,4 blelr- 00: lwz r5,0(r3) - eieio - stwu r5,4(r4) +01: eieio +02: stwu r5,4(r4) + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr @@ -903,8 +998,18 @@ _GLOBAL(_outsl_ns) subi r4,r4,4 blelr- 00: lwzu r5,4(r4) - stw r5,0(r3) - eieio +01: stw r5,0(r3) +02: eieio + ISYNC_8xx + .section .fixup,"ax" +03: blr + .text + .section __ex_table, "a" + .align 2 + .long 00b, 03b + .long 01b, 03b + .long 02b, 03b + .text bdnz 00b blr diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c index 16adde6..42d980e 100644 --- a/arch/ppc/kernel/traps.c +++ b/arch/ppc/kernel/traps.c @@ -159,7 +159,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr) */ static inline int check_io_access(struct pt_regs *regs) { -#ifdef CONFIG_PPC_PMAC +#if defined CONFIG_PPC_PMAC || defined CONFIG_8xx unsigned long msr = regs->msr; const struct exception_table_entry *entry; unsigned int *nip = (unsigned int *)regs->nip; @@ -178,7 +178,11 @@ static inline int check_io_access(struct pt_regs *regs) nip -= 2; else if (*nip == 0x4c00012c) /* isync */ --nip; - if (*nip == 0x7c0004ac || (*nip >> 26) == 3) { + /* eieio from I/O string functions */ + else if ((*nip) == 0x7c0006ac || *(nip+1) == 0x7c0006ac) + nip += 2; + if (*nip == 0x7c0004ac || (*nip >> 26) == 3 || + (*(nip+1) >> 26) == 3) { /* sync or twi */ unsigned int rb; diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h index f7f614d..2bfdf9c 100644 --- a/include/asm-ppc/io.h +++ b/include/asm-ppc/io.h @@ -237,9 +237,9 @@ static inline void __raw_writel(__u32 b, volatile void __iomem *addr) #define outsl(port, buf, nl) _outsl_ns((port)+___IO_BASE, (buf), (nl)) /* - * On powermacs, we will get a machine check exception if we - * try to read data from a non-existent I/O port. Because the - * machine check is an asynchronous exception, it isn't + * On powermacs and 8xx we will get a machine check exception + * if we try to read data from a non-existent I/O port. Because + * the machine check is an asynchronous exception, it isn't * well-defined which instruction SRR0 will point to when the * exception occurs. * With the sequence below (twi; isync; nop), we have found that @@ -258,7 +258,7 @@ extern __inline__ unsigned int name(unsigned int port) \ { \ unsigned int x; \ __asm__ __volatile__( \ - op " %0,0,%1\n" \ + "0:" op " %0,0,%1\n" \ "1: twi 0,%0,0\n" \ "2: isync\n" \ "3: nop\n" \ @@ -269,6 +269,7 @@ extern __inline__ unsigned int name(unsigned int port) \ ".previous\n" \ ".section __ex_table,\"a\"\n" \ " .align 2\n" \ + " .long 0b,5b\n" \ " .long 1b,5b\n" \ " .long 2b,5b\n" \ " .long 3b,5b\n" \ @@ -282,11 +283,12 @@ extern __inline__ unsigned int name(unsigned int port) \ extern __inline__ void name(unsigned int val, unsigned int port) \ { \ __asm__ __volatile__( \ - op " %0,0,%1\n" \ + "0:" op " %0,0,%1\n" \ "1: sync\n" \ "2:\n" \ ".section __ex_table,\"a\"\n" \ " .align 2\n" \ + " .long 0b,2b\n" \ " .long 1b,2b\n" \ ".previous" \ : : "r" (val), "r" (port + ___IO_BASE)); \ -- cgit v0.10.2 From 723925b7b138cecb29d76169d20149255d354a7a Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sun, 6 Nov 2005 14:54:36 -0800 Subject: [PATCH] powerpc: Nicer printing of address at oops Add nicer printing of faulting address on unresolvable kernel faults. Makes life a little easier for those who don't know how to decode our register contents at oops time. Signed-off-by: Olof Johansson Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 841d8b6..93d4fbf 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -389,5 +389,22 @@ void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig) } /* kernel has accessed a bad area */ + + printk(KERN_ALERT "Unable to handle kernel paging request for "); + switch (regs->trap) { + case 0x300: + case 0x380: + printk("data at address 0x%08lx\n", regs->dar); + break; + case 0x400: + case 0x480: + printk("instruction fetch\n"); + break; + default: + printk("unknown fault\n"); + } + printk(KERN_ALERT "Faulting instruction address: 0x%08lx\n", + regs->nip); + die("Kernel access of bad area", regs, sig); } -- cgit v0.10.2 From dcad47fc423ac9f4934579af814fa2dad5c8081b Mon Sep 17 00:00:00 2001 From: David Gibson Date: Mon, 7 Nov 2005 09:49:43 +1100 Subject: [PATCH] powerpc: Kill ppcdebug The ancient ppcdebug/PPCDBG mechanism is now only used in two places. First, in the hash setup code, one of the bits allows the size of the hash table to be reduced by a factor of 8 - which would be better accomplished with a command line option for that purpose. The other was a bunch of bus walking related messages in the iSeries code, which would seem to be insufficient reason to keep the mechanism. This patch removes the last traces of this mechanism. Built and booted on iSeries and pSeries POWER5 LPAR (ARCH=powerpc). Signed-off-by: David Gibson Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 6b52cce..5f8154f 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -41,7 +41,6 @@ #include #include #include -#include #include #include #include @@ -60,6 +59,7 @@ #include #include #include +#include #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) @@ -244,12 +244,6 @@ void __init early_setup(unsigned long dt_ptr) DBG(" -> early_setup()\n"); /* - * Fill the default DBG level (do we want to keep - * that old mecanism around forever ?) - */ - ppcdbg_initialize(); - - /* * Do early initializations using the flattened device * tree, like retreiving the physical memory map or * calculating/retreiving the hash table size @@ -516,7 +510,6 @@ void __init setup_system(void) printk("-----------------------------------------------------\n"); printk("ppc64_pft_size = 0x%lx\n", ppc64_pft_size); - printk("ppc64_debug_switch = 0x%lx\n", ppc64_debug_switch); printk("ppc64_interrupt_controller = 0x%ld\n", ppc64_interrupt_controller); printk("systemcfg = 0x%p\n", systemcfg); printk("systemcfg->platform = 0x%x\n", systemcfg->platform); diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 876c57c..081d931 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -44,7 +44,6 @@ #include #ifdef CONFIG_PPC64 #include "ppc32.h" -#include #include #include #else diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index ec9d098..58194e1 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -33,7 +33,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 6e9e05c..b6970c9 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -32,7 +32,6 @@ #include #include -#include #include #include #include @@ -194,12 +193,6 @@ void __init htab_initialize(void) htab_size_bytes = get_hashtable_size(); pteg_count = htab_size_bytes >> 7; - /* For debug, make the HTAB 1/8 as big as it normally would be. */ - ifppcdebug(PPCDBG_HTABSIZE) { - pteg_count >>= 3; - htab_size_bytes = pteg_count << 7; - } - htab_hash_mask = pteg_count - 1; if (systemcfg->platform & PLATFORM_LPAR) { diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index b0fc822..aa98b79 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -57,7 +57,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index b79a782..d1fbd3f 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -59,7 +59,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c index c113591..a06603d 100644 --- a/arch/powerpc/platforms/iseries/irq.c +++ b/arch/powerpc/platforms/iseries/irq.c @@ -35,7 +35,6 @@ #include #include -#include #include #include #include @@ -227,8 +226,6 @@ static void iSeries_enable_IRQ(unsigned int irq) /* Unmask secondary INTA */ mask = 0x80000000; HvCallPci_unmaskInterrupts(bus, subBus, deviceId, mask); - PPCDBG(PPCDBG_BUSWALK, "iSeries_enable_IRQ 0x%02X.%02X.%02X 0x%04X\n", - bus, subBus, deviceId, irq); } /* This is called by iSeries_activate_IRQs */ @@ -310,8 +307,6 @@ static void iSeries_disable_IRQ(unsigned int irq) /* Mask secondary INTA */ mask = 0x80000000; HvCallPci_maskInterrupts(bus, subBus, deviceId, mask); - PPCDBG(PPCDBG_BUSWALK, "iSeries_disable_IRQ 0x%02X.%02X.%02X 0x%04X\n", - bus, subBus, deviceId, irq); } /* diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c index 7d7d588..4b75131 100644 --- a/arch/powerpc/platforms/iseries/pci.c +++ b/arch/powerpc/platforms/iseries/pci.c @@ -32,7 +32,6 @@ #include #include #include -#include #include #include @@ -207,10 +206,6 @@ static struct device_node *build_device_node(HvBusNumber Bus, struct device_node *node; struct pci_dn *pdn; - PPCDBG(PPCDBG_BUSWALK, - "-build_device_node 0x%02X.%02X.%02X Function: %02X\n", - Bus, SubBus, AgentId, Function); - node = kmalloc(sizeof(struct device_node), GFP_KERNEL); if (node == NULL) return NULL; @@ -243,8 +238,6 @@ unsigned long __init find_and_init_phbs(void) struct pci_controller *phb; HvBusNumber bus; - PPCDBG(PPCDBG_BUSWALK, "find_and_init_phbs Entry\n"); - /* Check all possible buses. */ for (bus = 0; bus < 256; bus++) { int ret = HvCallXm_testBus(bus); @@ -261,9 +254,6 @@ unsigned long __init find_and_init_phbs(void) phb->last_busno = bus; phb->ops = &iSeries_pci_ops; - PPCDBG(PPCDBG_BUSWALK, "PCI:Create iSeries pci_controller(%p), Bus: %04X\n", - phb, bus); - /* Find and connect the devices. */ scan_PHB_slots(phb); } @@ -285,11 +275,9 @@ unsigned long __init find_and_init_phbs(void) */ void iSeries_pcibios_init(void) { - PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_init Entry.\n"); iomm_table_initialize(); find_and_init_phbs(); io_page_mask = -1; - PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_init Exit.\n"); } /* @@ -301,8 +289,6 @@ void __init iSeries_pci_final_fixup(void) struct device_node *node; int DeviceCount = 0; - PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_fixup Entry.\n"); - /* Fix up at the device node and pci_dev relationship */ mf_display_src(0xC9000100); @@ -316,9 +302,6 @@ void __init iSeries_pci_final_fixup(void) ++DeviceCount; pdev->sysdata = (void *)node; PCI_DN(node)->pcidev = pdev; - PPCDBG(PPCDBG_BUSWALK, - "pdev 0x%p <==> DevNode 0x%p\n", - pdev, node); allocate_device_bars(pdev); iSeries_Device_Information(pdev, DeviceCount); iommu_devnode_init_iSeries(node); @@ -333,13 +316,10 @@ void __init iSeries_pci_final_fixup(void) void pcibios_fixup_bus(struct pci_bus *PciBus) { - PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_fixup_bus(0x%04X) Entry.\n", - PciBus->number); } void pcibios_fixup_resources(struct pci_dev *pdev) { - PPCDBG(PPCDBG_BUSWALK, "fixup_resources pdev %p\n", pdev); } /* @@ -401,9 +381,6 @@ static void scan_EADS_bridge(HvBusNumber bus, HvSubBusNumber SubBus, printk("found device at bus %d idsel %d func %d (AgentId %x)\n", bus, IdSel, Function, AgentId); /* Connect EADs: 0x18.00.12 = 0x00 */ - PPCDBG(PPCDBG_BUSWALK, - "PCI:Connect EADs: 0x%02X.%02X.%02X\n", - bus, SubBus, AgentId); HvRc = HvCallPci_getBusUnitInfo(bus, SubBus, AgentId, iseries_hv_addr(BridgeInfo), sizeof(struct HvCallPci_BridgeInfo)); @@ -414,14 +391,6 @@ static void scan_EADS_bridge(HvBusNumber bus, HvSubBusNumber SubBus, BridgeInfo->maxAgents, BridgeInfo->maxSubBusNumber, BridgeInfo->logicalSlotNumber); - PPCDBG(PPCDBG_BUSWALK, - "PCI: BridgeInfo, Type:0x%02X, SubBus:0x%02X, MaxAgents:0x%02X, MaxSubBus: 0x%02X, LSlot: 0x%02X\n", - BridgeInfo->busUnitInfo.deviceType, - BridgeInfo->subBusNumber, - BridgeInfo->maxAgents, - BridgeInfo->maxSubBusNumber, - BridgeInfo->logicalSlotNumber); - if (BridgeInfo->busUnitInfo.deviceType == HvCallPci_BridgeDevice) { /* Scan_Bridge_Slot...: 0x18.00.12 */ @@ -454,9 +423,6 @@ static int scan_bridge_slot(HvBusNumber Bus, /* iSeries_allocate_IRQ.: 0x18.00.12(0xA3) */ Irq = iSeries_allocate_IRQ(Bus, 0, EADsIdSel); - PPCDBG(PPCDBG_BUSWALK, - "PCI:- allocate and assign IRQ 0x%02X.%02X.%02X = 0x%02X\n", - Bus, 0, EADsIdSel, Irq); /* * Connect all functions of any device found. @@ -482,9 +448,6 @@ static int scan_bridge_slot(HvBusNumber Bus, printk("read vendor ID: %x\n", VendorId); /* FoundDevice: 0x18.28.10 = 0x12AE */ - PPCDBG(PPCDBG_BUSWALK, - "PCI:- FoundDevice: 0x%02X.%02X.%02X = 0x%04X, irq %d\n", - Bus, SubBus, AgentId, VendorId, Irq); HvRc = HvCallPci_configStore8(Bus, SubBus, AgentId, PCI_INTERRUPT_LINE, Irq); if (HvRc != 0) diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index fda712b..36f89e9 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -71,8 +71,6 @@ extern void hvlog(char *fmt, ...); #endif /* Function Prototypes */ -extern void ppcdbg_initialize(void); - static void build_iSeries_Memory_Map(void); static void iseries_shared_idle(void); static void iseries_dedicated_idle(void); @@ -309,8 +307,6 @@ static void __init iSeries_init_early(void) ppc64_firmware_features = FW_FEATURE_ISERIES; - ppcdbg_initialize(); - ppc64_interrupt_controller = IC_ISERIES; #if defined(CONFIG_BLK_DEV_INITRD) diff --git a/arch/powerpc/platforms/iseries/smp.c b/arch/powerpc/platforms/iseries/smp.c index 3336bad..fcb094e 100644 --- a/arch/powerpc/platforms/iseries/smp.c +++ b/arch/powerpc/platforms/iseries/smp.c @@ -40,7 +40,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 513e272..8a99902 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -37,7 +37,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index e384a5a..d84d76f 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -31,13 +31,13 @@ #include #include #include -#include #include #include #include #include #include #include +#include #include "plpar_wrappers.h" diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index 6562ff4..fbd214d 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -48,7 +48,7 @@ #include #include #include -#include +#include static unsigned char ras_log_buf[RTAS_ERROR_LOG_MAX]; static DEFINE_SPINLOCK(ras_log_buf_lock); diff --git a/arch/powerpc/sysdev/u3_iommu.c b/arch/powerpc/sysdev/u3_iommu.c index 6077221..543d659 100644 --- a/arch/powerpc/sysdev/u3_iommu.c +++ b/arch/powerpc/sysdev/u3_iommu.c @@ -37,7 +37,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/ppc64/Kconfig.debug b/arch/ppc64/Kconfig.debug index f16a503..b258c93 100644 --- a/arch/ppc64/Kconfig.debug +++ b/arch/ppc64/Kconfig.debug @@ -55,10 +55,6 @@ config XMON_DEFAULT xmon is normally disabled unless booted with 'xmon=on'. Use 'xmon=off' to disable xmon init during runtime. -config PPCDBG - bool "Include PPCDBG realtime debugging" - depends on DEBUG_KERNEL - config IRQSTACKS bool "Use separate kernel stacks when processing interrupts" help diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c index 97bfceb..a4cb97a 100644 --- a/arch/ppc64/kernel/prom.c +++ b/arch/ppc64/kernel/prom.c @@ -46,7 +46,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/ppc64/kernel/prom_init.c b/arch/ppc64/kernel/prom_init.c index a4bbca6..e72b3f9 100644 --- a/arch/ppc64/kernel/prom_init.c +++ b/arch/ppc64/kernel/prom_init.c @@ -44,7 +44,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/ppc64/kernel/udbg.c b/arch/ppc64/kernel/udbg.c index d49c361..0d878e7 100644 --- a/arch/ppc64/kernel/udbg.c +++ b/arch/ppc64/kernel/udbg.c @@ -10,12 +10,10 @@ */ #include -#define WANT_PPCDBG_TAB /* Only defined here */ #include #include #include #include -#include #include void (*udbg_putc)(unsigned char c); @@ -89,59 +87,6 @@ void udbg_printf(const char *fmt, ...) va_end(args); } -/* PPCDBG stuff */ - -u64 ppc64_debug_switch; - -/* Special print used by PPCDBG() macro */ -void udbg_ppcdbg(unsigned long debug_flags, const char *fmt, ...) -{ - unsigned long active_debugs = debug_flags & ppc64_debug_switch; - - if (active_debugs) { - va_list ap; - unsigned char buf[UDBG_BUFSIZE]; - unsigned long i, len = 0; - - for (i=0; i < PPCDBG_NUM_FLAGS; i++) { - if (((1U << i) & active_debugs) && - trace_names[i]) { - len += strlen(trace_names[i]); - udbg_puts(trace_names[i]); - break; - } - } - - snprintf(buf, UDBG_BUFSIZE, " [%s]: ", current->comm); - len += strlen(buf); - udbg_puts(buf); - - while (len < 18) { - udbg_puts(" "); - len++; - } - - va_start(ap, fmt); - vsnprintf(buf, UDBG_BUFSIZE, fmt, ap); - udbg_puts(buf); - va_end(ap); - } -} - -unsigned long udbg_ifdebug(unsigned long flags) -{ - return (flags & ppc64_debug_switch); -} - -/* - * Initialize the PPCDBG state. Called before relocation has been enabled. - */ -void __init ppcdbg_initialize(void) -{ - ppc64_debug_switch = PPC_DEBUG_DEFAULT; /* | PPCDBG_BUSWALK | */ - /* PPCDBG_PHBINIT | PPCDBG_MM | PPCDBG_MMINIT | PPCDBG_TCEINIT | PPCDBG_TCE */; -} - /* * Early boot console based on udbg */ diff --git a/include/asm-ppc64/ppcdebug.h b/include/asm-ppc64/ppcdebug.h deleted file mode 100644 index fd7f696..0000000 --- a/include/asm-ppc64/ppcdebug.h +++ /dev/null @@ -1,108 +0,0 @@ -#ifndef __PPCDEBUG_H -#define __PPCDEBUG_H -/******************************************************************** - * Author: Adam Litke, IBM Corp - * (c) 2001 - * - * This file contains definitions and macros for a runtime debugging - * system for ppc64 (This should also work on 32 bit with a few - * adjustments. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - ********************************************************************/ - -#include -#include -#include -#include - -#define PPCDBG_BITVAL(X) ((1UL)<<((unsigned long)(X))) - -/* Defined below are the bit positions of various debug flags in the - * ppc64_debug_switch variable. - * -- When adding new values, please enter them into trace names below -- - * - * Values 62 & 63 can be used to stress the hardware page table management - * code. They must be set statically, any attempt to change them dynamically - * would be a very bad idea. - */ -#define PPCDBG_MMINIT PPCDBG_BITVAL(0) -#define PPCDBG_MM PPCDBG_BITVAL(1) -#define PPCDBG_SYS32 PPCDBG_BITVAL(2) -#define PPCDBG_SYS32NI PPCDBG_BITVAL(3) -#define PPCDBG_SYS32X PPCDBG_BITVAL(4) -#define PPCDBG_SYS32M PPCDBG_BITVAL(5) -#define PPCDBG_SYS64 PPCDBG_BITVAL(6) -#define PPCDBG_SYS64NI PPCDBG_BITVAL(7) -#define PPCDBG_SYS64X PPCDBG_BITVAL(8) -#define PPCDBG_SIGNAL PPCDBG_BITVAL(9) -#define PPCDBG_SIGNALXMON PPCDBG_BITVAL(10) -#define PPCDBG_BINFMT32 PPCDBG_BITVAL(11) -#define PPCDBG_BINFMT64 PPCDBG_BITVAL(12) -#define PPCDBG_BINFMTXMON PPCDBG_BITVAL(13) -#define PPCDBG_BINFMT_32ADDR PPCDBG_BITVAL(14) -#define PPCDBG_ALIGNFIXUP PPCDBG_BITVAL(15) -#define PPCDBG_TCEINIT PPCDBG_BITVAL(16) -#define PPCDBG_TCE PPCDBG_BITVAL(17) -#define PPCDBG_PHBINIT PPCDBG_BITVAL(18) -#define PPCDBG_SMP PPCDBG_BITVAL(19) -#define PPCDBG_BOOT PPCDBG_BITVAL(20) -#define PPCDBG_BUSWALK PPCDBG_BITVAL(21) -#define PPCDBG_PROM PPCDBG_BITVAL(22) -#define PPCDBG_RTAS PPCDBG_BITVAL(23) -#define PPCDBG_HTABSTRESS PPCDBG_BITVAL(62) -#define PPCDBG_HTABSIZE PPCDBG_BITVAL(63) -#define PPCDBG_NONE (0UL) -#define PPCDBG_ALL (0xffffffffUL) - -/* The default initial value for the debug switch */ -#define PPC_DEBUG_DEFAULT 0 -/* #define PPC_DEBUG_DEFAULT PPCDBG_ALL */ - -#define PPCDBG_NUM_FLAGS 64 - -extern u64 ppc64_debug_switch; - -#ifdef WANT_PPCDBG_TAB -/* A table of debug switch names to allow name lookup in xmon - * (and whoever else wants it. - */ -char *trace_names[PPCDBG_NUM_FLAGS] = { - /* Known debug names */ - "mminit", "mm", - "syscall32", "syscall32_ni", "syscall32x", "syscall32m", - "syscall64", "syscall64_ni", "syscall64x", - "signal", "signal_xmon", - "binfmt32", "binfmt64", "binfmt_xmon", "binfmt_32addr", - "alignfixup", "tceinit", "tce", "phb_init", - "smp", "boot", "buswalk", "prom", - "rtas" -}; -#else -extern char *trace_names[64]; -#endif /* WANT_PPCDBG_TAB */ - -#ifdef CONFIG_PPCDBG -/* Macro to conditionally print debug based on debug_switch */ -#define PPCDBG(...) udbg_ppcdbg(__VA_ARGS__) - -/* Macro to conditionally call a debug routine based on debug_switch */ -#define PPCDBGCALL(FLAGS,FUNCTION) ifppcdebug(FLAGS) FUNCTION - -/* Macros to test for debug states */ -#define ifppcdebug(FLAGS) if (udbg_ifdebug(FLAGS)) -#define ppcdebugset(FLAGS) (udbg_ifdebug(FLAGS)) -#define PPCDBG_BINFMT (test_thread_flag(TIF_32BIT) ? PPCDBG_BINFMT32 : PPCDBG_BINFMT64) - -#else -#define PPCDBG(...) do {;} while (0) -#define PPCDBGCALL(FLAGS,FUNCTION) do {;} while (0) -#define ifppcdebug(...) if (0) -#define ppcdebugset(FLAGS) (0) -#endif /* CONFIG_PPCDBG */ - -#endif /*__PPCDEBUG_H */ diff --git a/include/asm-ppc64/udbg.h b/include/asm-ppc64/udbg.h index 8192fb8..e3b9279 100644 --- a/include/asm-ppc64/udbg.h +++ b/include/asm-ppc64/udbg.h @@ -23,9 +23,6 @@ extern int udbg_read(char *buf, int buflen); extern void register_early_udbg_console(void); extern void udbg_printf(const char *fmt, ...); -extern void udbg_ppcdbg(unsigned long flags, const char *fmt, ...); -extern unsigned long udbg_ifdebug(unsigned long flags); -extern void __init ppcdbg_initialize(void); extern void udbg_init_uart(void __iomem *comport, unsigned int speed); -- cgit v0.10.2 From 2249ca9d60d3a8a1f6f223f0f0a0283fcb7ce33e Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Mon, 7 Nov 2005 13:18:13 +1100 Subject: powerpc: Various UP build fixes Mostly this involves adding #include , since that defines things like boot_cpuid[_phys] and [gs]et_hard_smp_processor_id, which are SMP-related but still needed on UP. This incorporates fixes posted by Olof Johansson and Heikki Lindholm. Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index b7fc2d8..751f5dd 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -608,7 +608,6 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs) return 0; } -#ifdef CONFIG_SMP /* This version can't take the spinlock, because it never returns */ struct rtas_args rtas_stop_self_args = { @@ -633,7 +632,6 @@ void rtas_stop_self(void) panic("Alas, I survived.\n"); } -#endif /* * Call early during boot, before mem init or bootmem, to retreive the RTAS diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 6996a59..1c7ea5e 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -61,6 +61,7 @@ #include #include #include +#include #ifdef CONFIG_PPC64 #include #include @@ -118,10 +119,6 @@ static unsigned adjusting_time = 0; unsigned long ppc_proc_freq; unsigned long ppc_tb_freq; -#ifdef CONFIG_PPC32 /* XXX for now */ -#define boot_cpuid 0 -#endif - u64 tb_last_jiffy __cacheline_aligned_in_smp; unsigned long tb_last_stamp; diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c index 2a912f4..35bd03c 100644 --- a/arch/powerpc/lib/locks.c +++ b/arch/powerpc/lib/locks.c @@ -23,6 +23,7 @@ #if defined(CONFIG_PPC_SPLPAR) || defined(CONFIG_PPC_ISERIES) #include #include +#include void __spin_yield(raw_spinlock_t *lock) { diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 4035cad..da09ba0 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -21,6 +21,7 @@ #include #include #include +#include static int numa_enabled = 1; diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 8a99902..fcc50bf 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -46,6 +46,7 @@ #include #include #include +#include #include "plpar_wrappers.h" diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index d84d76f..8a42006 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -38,6 +38,7 @@ #include #include #include +#include #include "plpar_wrappers.h" diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 65bee93..934d700 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -65,6 +65,7 @@ #include #include #include +#include #include "plpar_wrappers.h" diff --git a/arch/ppc64/kernel/idle.c b/arch/ppc64/kernel/idle.c index 8abd2ad..8fec274 100644 --- a/arch/ppc64/kernel/idle.c +++ b/arch/ppc64/kernel/idle.c @@ -28,6 +28,7 @@ #include #include #include +#include extern void power4_idle(void); diff --git a/arch/ppc64/kernel/machine_kexec.c b/arch/ppc64/kernel/machine_kexec.c index ff8679f..07ea035 100644 --- a/arch/ppc64/kernel/machine_kexec.c +++ b/arch/ppc64/kernel/machine_kexec.c @@ -24,6 +24,7 @@ #include #include /* _end */ #include +#include #define HASH_GROUP_SIZE 0x80 /* size of each hash group, asm/mmu.h */ diff --git a/arch/ppc64/kernel/sysfs.c b/arch/ppc64/kernel/sysfs.c index 6654b35..e99ec62 100644 --- a/arch/ppc64/kernel/sysfs.c +++ b/arch/ppc64/kernel/sysfs.c @@ -20,6 +20,7 @@ #include #include #include +#include static DEFINE_PER_CPU(struct cpu, cpu_devices); diff --git a/include/asm-powerpc/smp.h b/include/asm-powerpc/smp.h index 8bcdd0fa..98581e5 100644 --- a/include/asm-powerpc/smp.h +++ b/include/asm-powerpc/smp.h @@ -86,7 +86,6 @@ extern void __cpu_die(unsigned int cpu); #else /* for UP */ #define smp_setup_cpu_maps() -#define smp_release_cpus() #endif /* CONFIG_SMP */ @@ -94,6 +93,9 @@ extern void __cpu_die(unsigned int cpu); #define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id) #define set_hard_smp_processor_id(CPU, VAL) \ do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0) + +extern void smp_release_cpus(void); + #else /* 32-bit */ #ifndef CONFIG_SMP -- cgit v0.10.2 From 76032de898f34db55b5048349db56557828a1390 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Mon, 7 Nov 2005 13:12:03 +1100 Subject: [PATCH] powerpc: Make ppc_md.set_dabr non 64-bit specific Define ppc_md.set_dabr for both 32 + 64 bit. Cleanup the implementation for pSeries also, it was needlessly complex. Now we just do two firmware tests at setup time, and use one of two functions, rather than using one function and testing on every call. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 9684321..29f6e87 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -46,10 +46,10 @@ #include #include #include +#include #ifdef CONFIG_PPC64 #include #include -#include #endif extern unsigned long _get_SP(void); @@ -203,10 +203,8 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs) int set_dabr(unsigned long dabr) { -#ifdef CONFIG_PPC64 if (ppc_md.set_dabr) return ppc_md.set_dabr(dabr); -#endif mtspr(SPRN_DABR, dabr); return 0; diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h index 382f8c5..3bd1b3e 100644 --- a/arch/powerpc/platforms/pseries/plpar_wrappers.h +++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h @@ -107,14 +107,4 @@ static inline long plpar_put_term_char(unsigned long termno, unsigned long len, lbuf[1]); } -static inline long plpar_set_xdabr(unsigned long address, unsigned long flags) -{ - return plpar_hcall_norets(H_SET_XDABR, address, flags); -} - -static inline long plpar_set_dabr(unsigned long val) -{ - return plpar_hcall_norets(H_SET_DABR, val); -} - #endif /* _PSERIES_PLPAR_WRAPPERS_H */ diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 934d700..e78c393 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -354,14 +354,15 @@ static void pSeries_mach_cpu_die(void) static int pseries_set_dabr(unsigned long dabr) { - if (firmware_has_feature(FW_FEATURE_XDABR)) { - /* We want to catch accesses from kernel and userspace */ - return plpar_set_xdabr(dabr, H_DABRX_KERNEL | H_DABRX_USER); - } - - return plpar_set_dabr(dabr); + return plpar_hcall_norets(H_SET_DABR, dabr); } +static int pseries_set_xdabr(unsigned long dabr) +{ + /* We want to catch accesses from kernel and userspace */ + return plpar_hcall_norets(H_SET_XDABR, dabr, + H_DABRX_KERNEL | H_DABRX_USER); +} /* * Early initialization. Relocation is on but do not reference unbolted pages @@ -397,8 +398,10 @@ static void __init pSeries_init_early(void) DBG("Hello World !\n"); } - if (firmware_has_feature(FW_FEATURE_XDABR | FW_FEATURE_DABR)) + if (firmware_has_feature(FW_FEATURE_DABR)) ppc_md.set_dabr = pseries_set_dabr; + else if (firmware_has_feature(FW_FEATURE_XDABR)) + ppc_md.set_dabr = pseries_set_xdabr; iommu_init_early_pSeries(); diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h index 629ca96..b623bc4 100644 --- a/include/asm-powerpc/machdep.h +++ b/include/asm-powerpc/machdep.h @@ -80,7 +80,6 @@ struct machdep_calls { void (*iommu_dev_setup)(struct pci_dev *dev); void (*iommu_bus_setup)(struct pci_bus *bus); void (*irq_bus_setup)(struct pci_bus *bus); - int (*set_dabr)(unsigned long dabr); #endif int (*probe)(int platform); @@ -156,6 +155,9 @@ struct machdep_calls { platform, called once per cpu. */ void (*enable_pmcs)(void); + /* Set DABR for this platform, leave empty for default implemenation */ + int (*set_dabr)(unsigned long dabr); + #ifdef CONFIG_PPC32 /* XXX for now */ /* A general init function, called by ppc_init in init/main.c. May be NULL. */ -- cgit v0.10.2 From a82765b6eee3d1267ded3320ca67b39fe1844599 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Wed, 2 Nov 2005 22:34:20 +0000 Subject: [PATCH] powerpc: Fix ppc32 initrd OK, the Fedora ppc32 and ppc64 kernels should both be arch/powerpc by tomorrow. They're booting on G5, POWER5, and my powerbook. I'll test pmac SMP and Pegasos later -- but pmac smp is known broken in arch/ppc anyway, and I'll live with a potential Pegasos regression for now; it wasn't supported officially in FC4 either. I needed to fix ppc32 initrd -- we were never setting initrd_start. Signed-off-by: David Woodhouse Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index d43fa8c..e22856e 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -405,6 +405,46 @@ static int __init set_preferred_console(void) console_initcall(set_preferred_console); #endif /* CONFIG_PPC_MULTIPLATFORM */ +void __init check_for_initrd(void) +{ +#ifdef CONFIG_BLK_DEV_INITRD + unsigned long *prop; + + DBG(" -> check_for_initrd()\n"); + + if (of_chosen) { + prop = (unsigned long *)get_property(of_chosen, + "linux,initrd-start", NULL); + if (prop != NULL) { + initrd_start = (unsigned long)__va(*prop); + prop = (unsigned long *)get_property(of_chosen, + "linux,initrd-end", NULL); + if (prop != NULL) { + initrd_end = (unsigned long)__va(*prop); + initrd_below_start_ok = 1; + } else + initrd_start = 0; + } + } + + /* If we were passed an initrd, set the ROOT_DEV properly if the values + * look sensible. If not, clear initrd reference. + */ + if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE && + initrd_end > initrd_start) + ROOT_DEV = Root_RAM0; + else { + printk("Bogus initrd %08lx %08lx\n", initrd_start, initrd_end); + initrd_start = initrd_end = 0; + } + + if (initrd_start) + printk("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end); + + DBG(" <- check_for_initrd()\n"); +#endif /* CONFIG_BLK_DEV_INITRD */ +} + #ifdef CONFIG_SMP /** diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index b45eedb..3af2631 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -286,6 +286,7 @@ void __init setup_arch(char **cmdline_p) loops_per_jiffy = 500000000 / HZ; unflatten_device_tree(); + check_for_initrd(); finish_device_tree(); smp_setup_cpu_maps(); diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 785fd9d..0471e84 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -395,43 +395,6 @@ static void __init initialize_cache_info(void) DBG(" <- initialize_cache_info()\n"); } -static void __init check_for_initrd(void) -{ -#ifdef CONFIG_BLK_DEV_INITRD - u64 *prop; - - DBG(" -> check_for_initrd()\n"); - - if (of_chosen) { - prop = (u64 *)get_property(of_chosen, - "linux,initrd-start", NULL); - if (prop != NULL) { - initrd_start = (unsigned long)__va(*prop); - prop = (u64 *)get_property(of_chosen, - "linux,initrd-end", NULL); - if (prop != NULL) { - initrd_end = (unsigned long)__va(*prop); - initrd_below_start_ok = 1; - } else - initrd_start = 0; - } - } - - /* If we were passed an initrd, set the ROOT_DEV properly if the values - * look sensible. If not, clear initrd reference. - */ - if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE && - initrd_end > initrd_start) - ROOT_DEV = Root_RAM0; - else - initrd_start = initrd_end = 0; - - if (initrd_start) - printk("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end); - - DBG(" <- check_for_initrd()\n"); -#endif /* CONFIG_BLK_DEV_INITRD */ -} /* * Do some initial setup of the system. The parameters are those which -- cgit v0.10.2 From 4350147a816b9c5b40fa59e4fa23f17490630b79 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 14:27:33 +1100 Subject: [PATCH] ppc64: SMU based macs cpufreq support CPU freq support using 970FX powertune facility for iMac G5 and SMU based single CPU desktop. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 6ffae2d..3ac9195 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -404,6 +404,14 @@ config CPU_FREQ_PMAC this currently includes some models of iBook & Titanium PowerBook. +config CPU_FREQ_PMAC64 + bool "Support for some Apple G5s" + depends on CPU_FREQ && PMAC_SMU && PPC64 + select CPU_FREQ_TABLE + help + This adds support for frequency switching on Apple iMac G5, + and some of the more recent desktop G5 machines as well. + config PPC601_SYNC_FIX bool "Workarounds for PPC601 bugs" depends on 6xx && (PPC_PREP || PPC_PMAC) diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index b3e95ff..ae1433d 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -604,6 +604,76 @@ _GLOBAL(real_writeb) #endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */ /* + * SCOM access functions for 970 (FX only for now) + * + * unsigned long scom970_read(unsigned int address); + * void scom970_write(unsigned int address, unsigned long value); + * + * The address passed in is the 24 bits register address. This code + * is 970 specific and will not check the status bits, so you should + * know what you are doing. + */ +_GLOBAL(scom970_read) + /* interrupts off */ + mfmsr r4 + ori r0,r4,MSR_EE + xori r0,r0,MSR_EE + mtmsrd r0,1 + + /* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits + * (including parity). On current CPUs they must be 0'd, + * and finally or in RW bit + */ + rlwinm r3,r3,8,0,15 + ori r3,r3,0x8000 + + /* do the actual scom read */ + sync + mtspr SPRN_SCOMC,r3 + isync + mfspr r3,SPRN_SCOMD + isync + mfspr r0,SPRN_SCOMC + isync + + /* XXX: fixup result on some buggy 970's (ouch ! we lost a bit, bah + * that's the best we can do). Not implemented yet as we don't use + * the scom on any of the bogus CPUs yet, but may have to be done + * ultimately + */ + + /* restore interrupts */ + mtmsrd r4,1 + blr + + +_GLOBAL(scom970_write) + /* interrupts off */ + mfmsr r5 + ori r0,r5,MSR_EE + xori r0,r0,MSR_EE + mtmsrd r0,1 + + /* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits + * (including parity). On current CPUs they must be 0'd. + */ + + rlwinm r3,r3,8,0,15 + + sync + mtspr SPRN_SCOMD,r4 /* write data */ + isync + mtspr SPRN_SCOMC,r3 /* write command */ + isync + mfspr 3,SPRN_SCOMC + isync + + /* restore interrupts */ + mtmsrd r5,1 + blr + + +/* * Create a kernel thread * kernel_thread(fn, arg, flags) */ diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile index 4369676..c9df44f 100644 --- a/arch/powerpc/platforms/powermac/Makefile +++ b/arch/powerpc/platforms/powermac/Makefile @@ -1,7 +1,8 @@ obj-y += pic.o setup.o time.o feature.o pci.o \ sleep.o low_i2c.o cache.o obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o -obj-$(CONFIG_CPU_FREQ_PMAC) += cpufreq.o +obj-$(CONFIG_CPU_FREQ_PMAC) += cpufreq_32.o +obj-$(CONFIG_CPU_FREQ_PMAC64) += cpufreq_64.o obj-$(CONFIG_NVRAM) += nvram.o # ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff obj-$(CONFIG_PPC64) += nvram.o diff --git a/arch/powerpc/platforms/powermac/cpufreq.c b/arch/powerpc/platforms/powermac/cpufreq.c deleted file mode 100644 index c47f8b6..0000000 --- a/arch/powerpc/platforms/powermac/cpufreq.c +++ /dev/null @@ -1,726 +0,0 @@ -/* - * arch/ppc/platforms/pmac_cpufreq.c - * - * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt - * Copyright (C) 2004 John Steele Scott - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * TODO: Need a big cleanup here. Basically, we need to have different - * cpufreq_driver structures for the different type of HW instead of the - * current mess. We also need to better deal with the detection of the - * type of machine. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* WARNING !!! This will cause calibrate_delay() to be called, - * but this is an __init function ! So you MUST go edit - * init/main.c to make it non-init before enabling DEBUG_FREQ - */ -#undef DEBUG_FREQ - -/* - * There is a problem with the core cpufreq code on SMP kernels, - * it won't recalculate the Bogomips properly - */ -#ifdef CONFIG_SMP -#warning "WARNING, CPUFREQ not recommended on SMP kernels" -#endif - -extern void low_choose_7447a_dfs(int dfs); -extern void low_choose_750fx_pll(int pll); -extern void low_sleep_handler(void); - -/* - * Currently, PowerMac cpufreq supports only high & low frequencies - * that are set by the firmware - */ -static unsigned int low_freq; -static unsigned int hi_freq; -static unsigned int cur_freq; -static unsigned int sleep_freq; - -/* - * Different models uses different mecanisms to switch the frequency - */ -static int (*set_speed_proc)(int low_speed); -static unsigned int (*get_speed_proc)(void); - -/* - * Some definitions used by the various speedprocs - */ -static u32 voltage_gpio; -static u32 frequency_gpio; -static u32 slew_done_gpio; -static int no_schedule; -static int has_cpu_l2lve; -static int is_pmu_based; - -/* There are only two frequency states for each processor. Values - * are in kHz for the time being. - */ -#define CPUFREQ_HIGH 0 -#define CPUFREQ_LOW 1 - -static struct cpufreq_frequency_table pmac_cpu_freqs[] = { - {CPUFREQ_HIGH, 0}, - {CPUFREQ_LOW, 0}, - {0, CPUFREQ_TABLE_END}, -}; - -static struct freq_attr* pmac_cpu_freqs_attr[] = { - &cpufreq_freq_attr_scaling_available_freqs, - NULL, -}; - -static inline void local_delay(unsigned long ms) -{ - if (no_schedule) - mdelay(ms); - else - msleep(ms); -} - -#ifdef DEBUG_FREQ -static inline void debug_calc_bogomips(void) -{ - /* This will cause a recalc of bogomips and display the - * result. We backup/restore the value to avoid affecting the - * core cpufreq framework's own calculation. - */ - extern void calibrate_delay(void); - - unsigned long save_lpj = loops_per_jiffy; - calibrate_delay(); - loops_per_jiffy = save_lpj; -} -#endif /* DEBUG_FREQ */ - -/* Switch CPU speed under 750FX CPU control - */ -static int cpu_750fx_cpu_speed(int low_speed) -{ - u32 hid2; - - if (low_speed == 0) { - /* ramping up, set voltage first */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); - /* Make sure we sleep for at least 1ms */ - local_delay(10); - - /* tweak L2 for high voltage */ - if (has_cpu_l2lve) { - hid2 = mfspr(SPRN_HID2); - hid2 &= ~0x2000; - mtspr(SPRN_HID2, hid2); - } - } -#ifdef CONFIG_6xx - low_choose_750fx_pll(low_speed); -#endif - if (low_speed == 1) { - /* tweak L2 for low voltage */ - if (has_cpu_l2lve) { - hid2 = mfspr(SPRN_HID2); - hid2 |= 0x2000; - mtspr(SPRN_HID2, hid2); - } - - /* ramping down, set voltage last */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); - local_delay(10); - } - - return 0; -} - -static unsigned int cpu_750fx_get_cpu_speed(void) -{ - if (mfspr(SPRN_HID1) & HID1_PS) - return low_freq; - else - return hi_freq; -} - -/* Switch CPU speed using DFS */ -static int dfs_set_cpu_speed(int low_speed) -{ - if (low_speed == 0) { - /* ramping up, set voltage first */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); - /* Make sure we sleep for at least 1ms */ - local_delay(1); - } - - /* set frequency */ -#ifdef CONFIG_6xx - low_choose_7447a_dfs(low_speed); -#endif - udelay(100); - - if (low_speed == 1) { - /* ramping down, set voltage last */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); - local_delay(1); - } - - return 0; -} - -static unsigned int dfs_get_cpu_speed(void) -{ - if (mfspr(SPRN_HID1) & HID1_DFS) - return low_freq; - else - return hi_freq; -} - - -/* Switch CPU speed using slewing GPIOs - */ -static int gpios_set_cpu_speed(int low_speed) -{ - int gpio, timeout = 0; - - /* If ramping up, set voltage first */ - if (low_speed == 0) { - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); - /* Delay is way too big but it's ok, we schedule */ - local_delay(10); - } - - /* Set frequency */ - gpio = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, frequency_gpio, 0); - if (low_speed == ((gpio & 0x01) == 0)) - goto skip; - - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, frequency_gpio, - low_speed ? 0x04 : 0x05); - udelay(200); - do { - if (++timeout > 100) - break; - local_delay(1); - gpio = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, slew_done_gpio, 0); - } while((gpio & 0x02) == 0); - skip: - /* If ramping down, set voltage last */ - if (low_speed == 1) { - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); - /* Delay is way too big but it's ok, we schedule */ - local_delay(10); - } - -#ifdef DEBUG_FREQ - debug_calc_bogomips(); -#endif - - return 0; -} - -/* Switch CPU speed under PMU control - */ -static int pmu_set_cpu_speed(int low_speed) -{ - struct adb_request req; - unsigned long save_l2cr; - unsigned long save_l3cr; - unsigned int pic_prio; - unsigned long flags; - - preempt_disable(); - -#ifdef DEBUG_FREQ - printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1)); -#endif - pmu_suspend(); - - /* Disable all interrupt sources on openpic */ - pic_prio = mpic_cpu_get_priority(); - mpic_cpu_set_priority(0xf); - - /* Make sure the decrementer won't interrupt us */ - asm volatile("mtdec %0" : : "r" (0x7fffffff)); - /* Make sure any pending DEC interrupt occuring while we did - * the above didn't re-enable the DEC */ - mb(); - asm volatile("mtdec %0" : : "r" (0x7fffffff)); - - /* We can now disable MSR_EE */ - local_irq_save(flags); - - /* Giveup the FPU & vec */ - enable_kernel_fp(); - -#ifdef CONFIG_ALTIVEC - if (cpu_has_feature(CPU_FTR_ALTIVEC)) - enable_kernel_altivec(); -#endif /* CONFIG_ALTIVEC */ - - /* Save & disable L2 and L3 caches */ - save_l3cr = _get_L3CR(); /* (returns -1 if not available) */ - save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ - - /* Send the new speed command. My assumption is that this command - * will cause PLL_CFG[0..3] to be changed next time CPU goes to sleep - */ - pmu_request(&req, NULL, 6, PMU_CPU_SPEED, 'W', 'O', 'O', 'F', low_speed); - while (!req.complete) - pmu_poll(); - - /* Prepare the northbridge for the speed transition */ - pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,1,1); - - /* Call low level code to backup CPU state and recover from - * hardware reset - */ - low_sleep_handler(); - - /* Restore the northbridge */ - pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,1,0); - - /* Restore L2 cache */ - if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) - _set_L2CR(save_l2cr); - /* Restore L3 cache */ - if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0) - _set_L3CR(save_l3cr); - - /* Restore userland MMU context */ - set_context(current->active_mm->context, current->active_mm->pgd); - -#ifdef DEBUG_FREQ - printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1)); -#endif - - /* Restore low level PMU operations */ - pmu_unlock(); - - /* Restore decrementer */ - wakeup_decrementer(); - - /* Restore interrupts */ - mpic_cpu_set_priority(pic_prio); - - /* Let interrupts flow again ... */ - local_irq_restore(flags); - -#ifdef DEBUG_FREQ - debug_calc_bogomips(); -#endif - - pmu_resume(); - - preempt_enable(); - - return 0; -} - -static int do_set_cpu_speed(int speed_mode, int notify) -{ - struct cpufreq_freqs freqs; - unsigned long l3cr; - static unsigned long prev_l3cr; - - freqs.old = cur_freq; - freqs.new = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq; - freqs.cpu = smp_processor_id(); - - if (freqs.old == freqs.new) - return 0; - - if (notify) - cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); - if (speed_mode == CPUFREQ_LOW && - cpu_has_feature(CPU_FTR_L3CR)) { - l3cr = _get_L3CR(); - if (l3cr & L3CR_L3E) { - prev_l3cr = l3cr; - _set_L3CR(0); - } - } - set_speed_proc(speed_mode == CPUFREQ_LOW); - if (speed_mode == CPUFREQ_HIGH && - cpu_has_feature(CPU_FTR_L3CR)) { - l3cr = _get_L3CR(); - if ((prev_l3cr & L3CR_L3E) && l3cr != prev_l3cr) - _set_L3CR(prev_l3cr); - } - if (notify) - cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); - cur_freq = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq; - - return 0; -} - -static unsigned int pmac_cpufreq_get_speed(unsigned int cpu) -{ - return cur_freq; -} - -static int pmac_cpufreq_verify(struct cpufreq_policy *policy) -{ - return cpufreq_frequency_table_verify(policy, pmac_cpu_freqs); -} - -static int pmac_cpufreq_target( struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation) -{ - unsigned int newstate = 0; - - if (cpufreq_frequency_table_target(policy, pmac_cpu_freqs, - target_freq, relation, &newstate)) - return -EINVAL; - - return do_set_cpu_speed(newstate, 1); -} - -unsigned int pmac_get_one_cpufreq(int i) -{ - /* Supports only one CPU for now */ - return (i == 0) ? cur_freq : 0; -} - -static int pmac_cpufreq_cpu_init(struct cpufreq_policy *policy) -{ - if (policy->cpu != 0) - return -ENODEV; - - policy->governor = CPUFREQ_DEFAULT_GOVERNOR; - policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; - policy->cur = cur_freq; - - cpufreq_frequency_table_get_attr(pmac_cpu_freqs, policy->cpu); - return cpufreq_frequency_table_cpuinfo(policy, pmac_cpu_freqs); -} - -static u32 read_gpio(struct device_node *np) -{ - u32 *reg = (u32 *)get_property(np, "reg", NULL); - u32 offset; - - if (reg == NULL) - return 0; - /* That works for all keylargos but shall be fixed properly - * some day... The problem is that it seems we can't rely - * on the "reg" property of the GPIO nodes, they are either - * relative to the base of KeyLargo or to the base of the - * GPIO space, and the device-tree doesn't help. - */ - offset = *reg; - if (offset < KEYLARGO_GPIO_LEVELS0) - offset += KEYLARGO_GPIO_LEVELS0; - return offset; -} - -static int pmac_cpufreq_suspend(struct cpufreq_policy *policy, pm_message_t pmsg) -{ - /* Ok, this could be made a bit smarter, but let's be robust for now. We - * always force a speed change to high speed before sleep, to make sure - * we have appropriate voltage and/or bus speed for the wakeup process, - * and to make sure our loops_per_jiffies are "good enough", that is will - * not cause too short delays if we sleep in low speed and wake in high - * speed.. - */ - no_schedule = 1; - sleep_freq = cur_freq; - if (cur_freq == low_freq && !is_pmu_based) - do_set_cpu_speed(CPUFREQ_HIGH, 0); - return 0; -} - -static int pmac_cpufreq_resume(struct cpufreq_policy *policy) -{ - /* If we resume, first check if we have a get() function */ - if (get_speed_proc) - cur_freq = get_speed_proc(); - else - cur_freq = 0; - - /* We don't, hrm... we don't really know our speed here, best - * is that we force a switch to whatever it was, which is - * probably high speed due to our suspend() routine - */ - do_set_cpu_speed(sleep_freq == low_freq ? - CPUFREQ_LOW : CPUFREQ_HIGH, 0); - - no_schedule = 0; - return 0; -} - -static struct cpufreq_driver pmac_cpufreq_driver = { - .verify = pmac_cpufreq_verify, - .target = pmac_cpufreq_target, - .get = pmac_cpufreq_get_speed, - .init = pmac_cpufreq_cpu_init, - .suspend = pmac_cpufreq_suspend, - .resume = pmac_cpufreq_resume, - .flags = CPUFREQ_PM_NO_WARN, - .attr = pmac_cpu_freqs_attr, - .name = "powermac", - .owner = THIS_MODULE, -}; - - -static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode) -{ - struct device_node *volt_gpio_np = of_find_node_by_name(NULL, - "voltage-gpio"); - struct device_node *freq_gpio_np = of_find_node_by_name(NULL, - "frequency-gpio"); - struct device_node *slew_done_gpio_np = of_find_node_by_name(NULL, - "slewing-done"); - u32 *value; - - /* - * Check to see if it's GPIO driven or PMU only - * - * The way we extract the GPIO address is slightly hackish, but it - * works well enough for now. We need to abstract the whole GPIO - * stuff sooner or later anyway - */ - - if (volt_gpio_np) - voltage_gpio = read_gpio(volt_gpio_np); - if (freq_gpio_np) - frequency_gpio = read_gpio(freq_gpio_np); - if (slew_done_gpio_np) - slew_done_gpio = read_gpio(slew_done_gpio_np); - - /* If we use the frequency GPIOs, calculate the min/max speeds based - * on the bus frequencies - */ - if (frequency_gpio && slew_done_gpio) { - int lenp, rc; - u32 *freqs, *ratio; - - freqs = (u32 *)get_property(cpunode, "bus-frequencies", &lenp); - lenp /= sizeof(u32); - if (freqs == NULL || lenp != 2) { - printk(KERN_ERR "cpufreq: bus-frequencies incorrect or missing\n"); - return 1; - } - ratio = (u32 *)get_property(cpunode, "processor-to-bus-ratio*2", NULL); - if (ratio == NULL) { - printk(KERN_ERR "cpufreq: processor-to-bus-ratio*2 missing\n"); - return 1; - } - - /* Get the min/max bus frequencies */ - low_freq = min(freqs[0], freqs[1]); - hi_freq = max(freqs[0], freqs[1]); - - /* Grrrr.. It _seems_ that the device-tree is lying on the low bus - * frequency, it claims it to be around 84Mhz on some models while - * it appears to be approx. 101Mhz on all. Let's hack around here... - * fortunately, we don't need to be too precise - */ - if (low_freq < 98000000) - low_freq = 101000000; - - /* Convert those to CPU core clocks */ - low_freq = (low_freq * (*ratio)) / 2000; - hi_freq = (hi_freq * (*ratio)) / 2000; - - /* Now we get the frequencies, we read the GPIO to see what is out current - * speed - */ - rc = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, frequency_gpio, 0); - cur_freq = (rc & 0x01) ? hi_freq : low_freq; - - set_speed_proc = gpios_set_cpu_speed; - return 1; - } - - /* If we use the PMU, look for the min & max frequencies in the - * device-tree - */ - value = (u32 *)get_property(cpunode, "min-clock-frequency", NULL); - if (!value) - return 1; - low_freq = (*value) / 1000; - /* The PowerBook G4 12" (PowerBook6,1) has an error in the device-tree - * here */ - if (low_freq < 100000) - low_freq *= 10; - - value = (u32 *)get_property(cpunode, "max-clock-frequency", NULL); - if (!value) - return 1; - hi_freq = (*value) / 1000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - - return 0; -} - -static int pmac_cpufreq_init_7447A(struct device_node *cpunode) -{ - struct device_node *volt_gpio_np; - - if (get_property(cpunode, "dynamic-power-step", NULL) == NULL) - return 1; - - volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select"); - if (volt_gpio_np) - voltage_gpio = read_gpio(volt_gpio_np); - if (!voltage_gpio){ - printk(KERN_ERR "cpufreq: missing cpu-vcore-select gpio\n"); - return 1; - } - - /* OF only reports the high frequency */ - hi_freq = cur_freq; - low_freq = cur_freq/2; - - /* Read actual frequency from CPU */ - cur_freq = dfs_get_cpu_speed(); - set_speed_proc = dfs_set_cpu_speed; - get_speed_proc = dfs_get_cpu_speed; - - return 0; -} - -static int pmac_cpufreq_init_750FX(struct device_node *cpunode) -{ - struct device_node *volt_gpio_np; - u32 pvr, *value; - - if (get_property(cpunode, "dynamic-power-step", NULL) == NULL) - return 1; - - hi_freq = cur_freq; - value = (u32 *)get_property(cpunode, "reduced-clock-frequency", NULL); - if (!value) - return 1; - low_freq = (*value) / 1000; - - volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select"); - if (volt_gpio_np) - voltage_gpio = read_gpio(volt_gpio_np); - - pvr = mfspr(SPRN_PVR); - has_cpu_l2lve = !((pvr & 0xf00) == 0x100); - - set_speed_proc = cpu_750fx_cpu_speed; - get_speed_proc = cpu_750fx_get_cpu_speed; - cur_freq = cpu_750fx_get_cpu_speed(); - - return 0; -} - -/* Currently, we support the following machines: - * - * - Titanium PowerBook 1Ghz (PMU based, 667Mhz & 1Ghz) - * - Titanium PowerBook 800 (PMU based, 667Mhz & 800Mhz) - * - Titanium PowerBook 400 (PMU based, 300Mhz & 400Mhz) - * - Titanium PowerBook 500 (PMU based, 300Mhz & 500Mhz) - * - iBook2 500/600 (PMU based, 400Mhz & 500/600Mhz) - * - iBook2 700 (CPU based, 400Mhz & 700Mhz, support low voltage) - * - Recent MacRISC3 laptops - * - All new machines with 7447A CPUs - */ -static int __init pmac_cpufreq_setup(void) -{ - struct device_node *cpunode; - u32 *value; - - if (strstr(cmd_line, "nocpufreq")) - return 0; - - /* Assume only one CPU */ - cpunode = find_type_devices("cpu"); - if (!cpunode) - goto out; - - /* Get current cpu clock freq */ - value = (u32 *)get_property(cpunode, "clock-frequency", NULL); - if (!value) - goto out; - cur_freq = (*value) / 1000; - - /* Check for 7447A based MacRISC3 */ - if (machine_is_compatible("MacRISC3") && - get_property(cpunode, "dynamic-power-step", NULL) && - PVR_VER(mfspr(SPRN_PVR)) == 0x8003) { - pmac_cpufreq_init_7447A(cpunode); - /* Check for other MacRISC3 machines */ - } else if (machine_is_compatible("PowerBook3,4") || - machine_is_compatible("PowerBook3,5") || - machine_is_compatible("MacRISC3")) { - pmac_cpufreq_init_MacRISC3(cpunode); - /* Else check for iBook2 500/600 */ - } else if (machine_is_compatible("PowerBook4,1")) { - hi_freq = cur_freq; - low_freq = 400000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - } - /* Else check for TiPb 550 */ - else if (machine_is_compatible("PowerBook3,3") && cur_freq == 550000) { - hi_freq = cur_freq; - low_freq = 500000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - } - /* Else check for TiPb 400 & 500 */ - else if (machine_is_compatible("PowerBook3,2")) { - /* We only know about the 400 MHz and the 500Mhz model - * they both have 300 MHz as low frequency - */ - if (cur_freq < 350000 || cur_freq > 550000) - goto out; - hi_freq = cur_freq; - low_freq = 300000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - } - /* Else check for 750FX */ - else if (PVR_VER(mfspr(SPRN_PVR)) == 0x7000) - pmac_cpufreq_init_750FX(cpunode); -out: - if (set_speed_proc == NULL) - return -ENODEV; - - pmac_cpu_freqs[CPUFREQ_LOW].frequency = low_freq; - pmac_cpu_freqs[CPUFREQ_HIGH].frequency = hi_freq; - - printk(KERN_INFO "Registering PowerMac CPU frequency driver\n"); - printk(KERN_INFO "Low: %d Mhz, High: %d Mhz, Boot: %d Mhz\n", - low_freq/1000, hi_freq/1000, cur_freq/1000); - - return cpufreq_register_driver(&pmac_cpufreq_driver); -} - -module_init(pmac_cpufreq_setup); - diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c new file mode 100644 index 0000000..7960a7b --- /dev/null +++ b/arch/powerpc/platforms/powermac/cpufreq_32.c @@ -0,0 +1,727 @@ +/* + * arch/ppc/platforms/pmac_cpufreq.c + * + * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt + * Copyright (C) 2004 John Steele Scott + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * TODO: Need a big cleanup here. Basically, we need to have different + * cpufreq_driver structures for the different type of HW instead of the + * current mess. We also need to better deal with the detection of the + * type of machine. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* WARNING !!! This will cause calibrate_delay() to be called, + * but this is an __init function ! So you MUST go edit + * init/main.c to make it non-init before enabling DEBUG_FREQ + */ +#undef DEBUG_FREQ + +/* + * There is a problem with the core cpufreq code on SMP kernels, + * it won't recalculate the Bogomips properly + */ +#ifdef CONFIG_SMP +#warning "WARNING, CPUFREQ not recommended on SMP kernels" +#endif + +extern void low_choose_7447a_dfs(int dfs); +extern void low_choose_750fx_pll(int pll); +extern void low_sleep_handler(void); + +/* + * Currently, PowerMac cpufreq supports only high & low frequencies + * that are set by the firmware + */ +static unsigned int low_freq; +static unsigned int hi_freq; +static unsigned int cur_freq; +static unsigned int sleep_freq; + +/* + * Different models uses different mecanisms to switch the frequency + */ +static int (*set_speed_proc)(int low_speed); +static unsigned int (*get_speed_proc)(void); + +/* + * Some definitions used by the various speedprocs + */ +static u32 voltage_gpio; +static u32 frequency_gpio; +static u32 slew_done_gpio; +static int no_schedule; +static int has_cpu_l2lve; +static int is_pmu_based; + +/* There are only two frequency states for each processor. Values + * are in kHz for the time being. + */ +#define CPUFREQ_HIGH 0 +#define CPUFREQ_LOW 1 + +static struct cpufreq_frequency_table pmac_cpu_freqs[] = { + {CPUFREQ_HIGH, 0}, + {CPUFREQ_LOW, 0}, + {0, CPUFREQ_TABLE_END}, +}; + +static struct freq_attr* pmac_cpu_freqs_attr[] = { + &cpufreq_freq_attr_scaling_available_freqs, + NULL, +}; + +static inline void local_delay(unsigned long ms) +{ + if (no_schedule) + mdelay(ms); + else + msleep(ms); +} + +#ifdef DEBUG_FREQ +static inline void debug_calc_bogomips(void) +{ + /* This will cause a recalc of bogomips and display the + * result. We backup/restore the value to avoid affecting the + * core cpufreq framework's own calculation. + */ + extern void calibrate_delay(void); + + unsigned long save_lpj = loops_per_jiffy; + calibrate_delay(); + loops_per_jiffy = save_lpj; +} +#endif /* DEBUG_FREQ */ + +/* Switch CPU speed under 750FX CPU control + */ +static int cpu_750fx_cpu_speed(int low_speed) +{ + u32 hid2; + + if (low_speed == 0) { + /* ramping up, set voltage first */ + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); + /* Make sure we sleep for at least 1ms */ + local_delay(10); + + /* tweak L2 for high voltage */ + if (has_cpu_l2lve) { + hid2 = mfspr(SPRN_HID2); + hid2 &= ~0x2000; + mtspr(SPRN_HID2, hid2); + } + } +#ifdef CONFIG_6xx + low_choose_750fx_pll(low_speed); +#endif + if (low_speed == 1) { + /* tweak L2 for low voltage */ + if (has_cpu_l2lve) { + hid2 = mfspr(SPRN_HID2); + hid2 |= 0x2000; + mtspr(SPRN_HID2, hid2); + } + + /* ramping down, set voltage last */ + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); + local_delay(10); + } + + return 0; +} + +static unsigned int cpu_750fx_get_cpu_speed(void) +{ + if (mfspr(SPRN_HID1) & HID1_PS) + return low_freq; + else + return hi_freq; +} + +/* Switch CPU speed using DFS */ +static int dfs_set_cpu_speed(int low_speed) +{ + if (low_speed == 0) { + /* ramping up, set voltage first */ + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); + /* Make sure we sleep for at least 1ms */ + local_delay(1); + } + + /* set frequency */ +#ifdef CONFIG_6xx + low_choose_7447a_dfs(low_speed); +#endif + udelay(100); + + if (low_speed == 1) { + /* ramping down, set voltage last */ + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); + local_delay(1); + } + + return 0; +} + +static unsigned int dfs_get_cpu_speed(void) +{ + if (mfspr(SPRN_HID1) & HID1_DFS) + return low_freq; + else + return hi_freq; +} + + +/* Switch CPU speed using slewing GPIOs + */ +static int gpios_set_cpu_speed(int low_speed) +{ + int gpio, timeout = 0; + + /* If ramping up, set voltage first */ + if (low_speed == 0) { + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); + /* Delay is way too big but it's ok, we schedule */ + local_delay(10); + } + + /* Set frequency */ + gpio = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, frequency_gpio, 0); + if (low_speed == ((gpio & 0x01) == 0)) + goto skip; + + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, frequency_gpio, + low_speed ? 0x04 : 0x05); + udelay(200); + do { + if (++timeout > 100) + break; + local_delay(1); + gpio = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, slew_done_gpio, 0); + } while((gpio & 0x02) == 0); + skip: + /* If ramping down, set voltage last */ + if (low_speed == 1) { + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); + /* Delay is way too big but it's ok, we schedule */ + local_delay(10); + } + +#ifdef DEBUG_FREQ + debug_calc_bogomips(); +#endif + + return 0; +} + +/* Switch CPU speed under PMU control + */ +static int pmu_set_cpu_speed(int low_speed) +{ + struct adb_request req; + unsigned long save_l2cr; + unsigned long save_l3cr; + unsigned int pic_prio; + unsigned long flags; + + preempt_disable(); + +#ifdef DEBUG_FREQ + printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1)); +#endif + pmu_suspend(); + + /* Disable all interrupt sources on openpic */ + pic_prio = mpic_cpu_get_priority(); + mpic_cpu_set_priority(0xf); + + /* Make sure the decrementer won't interrupt us */ + asm volatile("mtdec %0" : : "r" (0x7fffffff)); + /* Make sure any pending DEC interrupt occuring while we did + * the above didn't re-enable the DEC */ + mb(); + asm volatile("mtdec %0" : : "r" (0x7fffffff)); + + /* We can now disable MSR_EE */ + local_irq_save(flags); + + /* Giveup the FPU & vec */ + enable_kernel_fp(); + +#ifdef CONFIG_ALTIVEC + if (cpu_has_feature(CPU_FTR_ALTIVEC)) + enable_kernel_altivec(); +#endif /* CONFIG_ALTIVEC */ + + /* Save & disable L2 and L3 caches */ + save_l3cr = _get_L3CR(); /* (returns -1 if not available) */ + save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ + + /* Send the new speed command. My assumption is that this command + * will cause PLL_CFG[0..3] to be changed next time CPU goes to sleep + */ + pmu_request(&req, NULL, 6, PMU_CPU_SPEED, 'W', 'O', 'O', 'F', low_speed); + while (!req.complete) + pmu_poll(); + + /* Prepare the northbridge for the speed transition */ + pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,1,1); + + /* Call low level code to backup CPU state and recover from + * hardware reset + */ + low_sleep_handler(); + + /* Restore the northbridge */ + pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,1,0); + + /* Restore L2 cache */ + if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) + _set_L2CR(save_l2cr); + /* Restore L3 cache */ + if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0) + _set_L3CR(save_l3cr); + + /* Restore userland MMU context */ + set_context(current->active_mm->context, current->active_mm->pgd); + +#ifdef DEBUG_FREQ + printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1)); +#endif + + /* Restore low level PMU operations */ + pmu_unlock(); + + /* Restore decrementer */ + wakeup_decrementer(); + + /* Restore interrupts */ + mpic_cpu_set_priority(pic_prio); + + /* Let interrupts flow again ... */ + local_irq_restore(flags); + +#ifdef DEBUG_FREQ + debug_calc_bogomips(); +#endif + + pmu_resume(); + + preempt_enable(); + + return 0; +} + +static int do_set_cpu_speed(int speed_mode, int notify) +{ + struct cpufreq_freqs freqs; + unsigned long l3cr; + static unsigned long prev_l3cr; + + freqs.old = cur_freq; + freqs.new = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq; + freqs.cpu = smp_processor_id(); + + if (freqs.old == freqs.new) + return 0; + + if (notify) + cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); + if (speed_mode == CPUFREQ_LOW && + cpu_has_feature(CPU_FTR_L3CR)) { + l3cr = _get_L3CR(); + if (l3cr & L3CR_L3E) { + prev_l3cr = l3cr; + _set_L3CR(0); + } + } + set_speed_proc(speed_mode == CPUFREQ_LOW); + if (speed_mode == CPUFREQ_HIGH && + cpu_has_feature(CPU_FTR_L3CR)) { + l3cr = _get_L3CR(); + if ((prev_l3cr & L3CR_L3E) && l3cr != prev_l3cr) + _set_L3CR(prev_l3cr); + } + if (notify) + cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); + cur_freq = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq; + + return 0; +} + +static unsigned int pmac_cpufreq_get_speed(unsigned int cpu) +{ + return cur_freq; +} + +static int pmac_cpufreq_verify(struct cpufreq_policy *policy) +{ + return cpufreq_frequency_table_verify(policy, pmac_cpu_freqs); +} + +static int pmac_cpufreq_target( struct cpufreq_policy *policy, + unsigned int target_freq, + unsigned int relation) +{ + unsigned int newstate = 0; + int rc; + + if (cpufreq_frequency_table_target(policy, pmac_cpu_freqs, + target_freq, relation, &newstate)) + return -EINVAL; + + rc = do_set_cpu_speed(newstate, 1); + + ppc_proc_freq = cur_freq * 1000ul; + return rc; +} + +static int pmac_cpufreq_cpu_init(struct cpufreq_policy *policy) +{ + if (policy->cpu != 0) + return -ENODEV; + + policy->governor = CPUFREQ_DEFAULT_GOVERNOR; + policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; + policy->cur = cur_freq; + + cpufreq_frequency_table_get_attr(pmac_cpu_freqs, policy->cpu); + return cpufreq_frequency_table_cpuinfo(policy, pmac_cpu_freqs); +} + +static u32 read_gpio(struct device_node *np) +{ + u32 *reg = (u32 *)get_property(np, "reg", NULL); + u32 offset; + + if (reg == NULL) + return 0; + /* That works for all keylargos but shall be fixed properly + * some day... The problem is that it seems we can't rely + * on the "reg" property of the GPIO nodes, they are either + * relative to the base of KeyLargo or to the base of the + * GPIO space, and the device-tree doesn't help. + */ + offset = *reg; + if (offset < KEYLARGO_GPIO_LEVELS0) + offset += KEYLARGO_GPIO_LEVELS0; + return offset; +} + +static int pmac_cpufreq_suspend(struct cpufreq_policy *policy, pm_message_t pmsg) +{ + /* Ok, this could be made a bit smarter, but let's be robust for now. We + * always force a speed change to high speed before sleep, to make sure + * we have appropriate voltage and/or bus speed for the wakeup process, + * and to make sure our loops_per_jiffies are "good enough", that is will + * not cause too short delays if we sleep in low speed and wake in high + * speed.. + */ + no_schedule = 1; + sleep_freq = cur_freq; + if (cur_freq == low_freq && !is_pmu_based) + do_set_cpu_speed(CPUFREQ_HIGH, 0); + return 0; +} + +static int pmac_cpufreq_resume(struct cpufreq_policy *policy) +{ + /* If we resume, first check if we have a get() function */ + if (get_speed_proc) + cur_freq = get_speed_proc(); + else) + cur_freq = 0; + + /* We don't, hrm... we don't really know our speed here, best + * is that we force a switch to whatever it was, which is + * probably high speed due to our suspend() routine + */ + do_set_cpu_speed(sleep_freq == low_freq ? + CPUFREQ_LOW : CPUFREQ_HIGH, 0); + + ppc_proc_freq = cur_freq * 1000ul; + + no_schedule = 0; + return 0; +} + +static struct cpufreq_driver pmac_cpufreq_driver = { + .verify = pmac_cpufreq_verify, + .target = pmac_cpufreq_target, + .get = pmac_cpufreq_get_speed, + .init = pmac_cpufreq_cpu_init, + .suspend = pmac_cpufreq_suspend, + .resume = pmac_cpufreq_resume, + .flags = CPUFREQ_PM_NO_WARN, + .attr = pmac_cpu_freqs_attr, + .name = "powermac", + .owner = THIS_MODULE, +}; + + +static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode) +{ + struct device_node *volt_gpio_np = of_find_node_by_name(NULL, + "voltage-gpio"); + struct device_node *freq_gpio_np = of_find_node_by_name(NULL, + "frequency-gpio"); + struct device_node *slew_done_gpio_np = of_find_node_by_name(NULL, + "slewing-done"); + u32 *value; + + /* + * Check to see if it's GPIO driven or PMU only + * + * The way we extract the GPIO address is slightly hackish, but it + * works well enough for now. We need to abstract the whole GPIO + * stuff sooner or later anyway + */ + + if (volt_gpio_np) + voltage_gpio = read_gpio(volt_gpio_np); + if (freq_gpio_np) + frequency_gpio = read_gpio(freq_gpio_np); + if (slew_done_gpio_np) + slew_done_gpio = read_gpio(slew_done_gpio_np); + + /* If we use the frequency GPIOs, calculate the min/max speeds based + * on the bus frequencies + */ + if (frequency_gpio && slew_done_gpio) { + int lenp, rc; + u32 *freqs, *ratio; + + freqs = (u32 *)get_property(cpunode, "bus-frequencies", &lenp); + lenp /= sizeof(u32); + if (freqs == NULL || lenp != 2) { + printk(KERN_ERR "cpufreq: bus-frequencies incorrect or missing\n"); + return 1; + } + ratio = (u32 *)get_property(cpunode, "processor-to-bus-ratio*2", NULL); + if (ratio == NULL) { + printk(KERN_ERR "cpufreq: processor-to-bus-ratio*2 missing\n"); + return 1; + } + + /* Get the min/max bus frequencies */ + low_freq = min(freqs[0], freqs[1]); + hi_freq = max(freqs[0], freqs[1]); + + /* Grrrr.. It _seems_ that the device-tree is lying on the low bus + * frequency, it claims it to be around 84Mhz on some models while + * it appears to be approx. 101Mhz on all. Let's hack around here... + * fortunately, we don't need to be too precise + */ + if (low_freq < 98000000) + low_freq = 101000000; + + /* Convert those to CPU core clocks */ + low_freq = (low_freq * (*ratio)) / 2000; + hi_freq = (hi_freq * (*ratio)) / 2000; + + /* Now we get the frequencies, we read the GPIO to see what is out current + * speed + */ + rc = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, frequency_gpio, 0); + cur_freq = (rc & 0x01) ? hi_freq : low_freq; + + set_speed_proc = gpios_set_cpu_speed; + return 1; + } + + /* If we use the PMU, look for the min & max frequencies in the + * device-tree + */ + value = (u32 *)get_property(cpunode, "min-clock-frequency", NULL); + if (!value) + return 1; + low_freq = (*value) / 1000; + /* The PowerBook G4 12" (PowerBook6,1) has an error in the device-tree + * here */ + if (low_freq < 100000) + low_freq *= 10; + + value = (u32 *)get_property(cpunode, "max-clock-frequency", NULL); + if (!value) + return 1; + hi_freq = (*value) / 1000; + set_speed_proc = pmu_set_cpu_speed; + is_pmu_based = 1; + + return 0; +} + +static int pmac_cpufreq_init_7447A(struct device_node *cpunode) +{ + struct device_node *volt_gpio_np; + + if (get_property(cpunode, "dynamic-power-step", NULL) == NULL) + return 1; + + volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select"); + if (volt_gpio_np) + voltage_gpio = read_gpio(volt_gpio_np); + if (!voltage_gpio){ + printk(KERN_ERR "cpufreq: missing cpu-vcore-select gpio\n"); + return 1; + } + + /* OF only reports the high frequency */ + hi_freq = cur_freq; + low_freq = cur_freq/2; + + /* Read actual frequency from CPU */ + cur_freq = dfs_get_cpu_speed(); + set_speed_proc = dfs_set_cpu_speed; + get_speed_proc = dfs_get_cpu_speed; + + return 0; +} + +static int pmac_cpufreq_init_750FX(struct device_node *cpunode) +{ + struct device_node *volt_gpio_np; + u32 pvr, *value; + + if (get_property(cpunode, "dynamic-power-step", NULL) == NULL) + return 1; + + hi_freq = cur_freq; + value = (u32 *)get_property(cpunode, "reduced-clock-frequency", NULL); + if (!value) + return 1; + low_freq = (*value) / 1000; + + volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select"); + if (volt_gpio_np) + voltage_gpio = read_gpio(volt_gpio_np); + + pvr = mfspr(SPRN_PVR); + has_cpu_l2lve = !((pvr & 0xf00) == 0x100); + + set_speed_proc = cpu_750fx_cpu_speed; + get_speed_proc = cpu_750fx_get_cpu_speed; + cur_freq = cpu_750fx_get_cpu_speed(); + + return 0; +} + +/* Currently, we support the following machines: + * + * - Titanium PowerBook 1Ghz (PMU based, 667Mhz & 1Ghz) + * - Titanium PowerBook 800 (PMU based, 667Mhz & 800Mhz) + * - Titanium PowerBook 400 (PMU based, 300Mhz & 400Mhz) + * - Titanium PowerBook 500 (PMU based, 300Mhz & 500Mhz) + * - iBook2 500/600 (PMU based, 400Mhz & 500/600Mhz) + * - iBook2 700 (CPU based, 400Mhz & 700Mhz, support low voltage) + * - Recent MacRISC3 laptops + * - All new machines with 7447A CPUs + */ +static int __init pmac_cpufreq_setup(void) +{ + struct device_node *cpunode; + u32 *value; + + if (strstr(cmd_line, "nocpufreq")) + return 0; + + /* Assume only one CPU */ + cpunode = find_type_devices("cpu"); + if (!cpunode) + goto out; + + /* Get current cpu clock freq */ + value = (u32 *)get_property(cpunode, "clock-frequency", NULL); + if (!value) + goto out; + cur_freq = (*value) / 1000; + + /* Check for 7447A based MacRISC3 */ + if (machine_is_compatible("MacRISC3") && + get_property(cpunode, "dynamic-power-step", NULL) && + PVR_VER(mfspr(SPRN_PVR)) == 0x8003) { + pmac_cpufreq_init_7447A(cpunode); + /* Check for other MacRISC3 machines */ + } else if (machine_is_compatible("PowerBook3,4") || + machine_is_compatible("PowerBook3,5") || + machine_is_compatible("MacRISC3")) { + pmac_cpufreq_init_MacRISC3(cpunode); + /* Else check for iBook2 500/600 */ + } else if (machine_is_compatible("PowerBook4,1")) { + hi_freq = cur_freq; + low_freq = 400000; + set_speed_proc = pmu_set_cpu_speed; + is_pmu_based = 1; + } + /* Else check for TiPb 550 */ + else if (machine_is_compatible("PowerBook3,3") && cur_freq == 550000) { + hi_freq = cur_freq; + low_freq = 500000; + set_speed_proc = pmu_set_cpu_speed; + is_pmu_based = 1; + } + /* Else check for TiPb 400 & 500 */ + else if (machine_is_compatible("PowerBook3,2")) { + /* We only know about the 400 MHz and the 500Mhz model + * they both have 300 MHz as low frequency + */ + if (cur_freq < 350000 || cur_freq > 550000) + goto out; + hi_freq = cur_freq; + low_freq = 300000; + set_speed_proc = pmu_set_cpu_speed; + is_pmu_based = 1; + } + /* Else check for 750FX */ + else if (PVR_VER(mfspr(SPRN_PVR)) == 0x7000) + pmac_cpufreq_init_750FX(cpunode); +out: + if (set_speed_proc == NULL) + return -ENODEV; + + pmac_cpu_freqs[CPUFREQ_LOW].frequency = low_freq; + pmac_cpu_freqs[CPUFREQ_HIGH].frequency = hi_freq; + ppc_proc_freq = cur_freq * 1000ul; + + printk(KERN_INFO "Registering PowerMac CPU frequency driver\n"); + printk(KERN_INFO "Low: %d Mhz, High: %d Mhz, Boot: %d Mhz\n", + low_freq/1000, hi_freq/1000, cur_freq/1000); + + return cpufreq_register_driver(&pmac_cpufreq_driver); +} + +module_init(pmac_cpufreq_setup); + diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c new file mode 100644 index 0000000..3915034 --- /dev/null +++ b/arch/powerpc/platforms/powermac/cpufreq_64.c @@ -0,0 +1,323 @@ +/* + * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt + * and Markus Demleitner + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This driver adds basic cpufreq support for SMU & 970FX based G5 Macs, + * that is iMac G5 and latest single CPU desktop. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#undef DEBUG + +#ifdef DEBUG +#define DBG(fmt...) printk(fmt) +#else +#define DBG(fmt...) +#endif + +/* see 970FX user manual */ + +#define SCOM_PCR 0x0aa001 /* PCR scom addr */ + +#define PCR_HILO_SELECT 0x80000000U /* 1 = PCR, 0 = PCRH */ +#define PCR_SPEED_FULL 0x00000000U /* 1:1 speed value */ +#define PCR_SPEED_HALF 0x00020000U /* 1:2 speed value */ +#define PCR_SPEED_QUARTER 0x00040000U /* 1:4 speed value */ +#define PCR_SPEED_MASK 0x000e0000U /* speed mask */ +#define PCR_SPEED_SHIFT 17 +#define PCR_FREQ_REQ_VALID 0x00010000U /* freq request valid */ +#define PCR_VOLT_REQ_VALID 0x00008000U /* volt request valid */ +#define PCR_TARGET_TIME_MASK 0x00006000U /* target time */ +#define PCR_STATLAT_MASK 0x00001f00U /* STATLAT value */ +#define PCR_SNOOPLAT_MASK 0x000000f0U /* SNOOPLAT value */ +#define PCR_SNOOPACC_MASK 0x0000000fU /* SNOOPACC value */ + +#define SCOM_PSR 0x408001 /* PSR scom addr */ +/* warning: PSR is a 64 bits register */ +#define PSR_CMD_RECEIVED 0x2000000000000000U /* command received */ +#define PSR_CMD_COMPLETED 0x1000000000000000U /* command completed */ +#define PSR_CUR_SPEED_MASK 0x0300000000000000U /* current speed */ +#define PSR_CUR_SPEED_SHIFT (56) + +/* + * The G5 only supports two frequencies (Quarter speed is not supported) + */ +#define CPUFREQ_HIGH 0 +#define CPUFREQ_LOW 1 + +static struct cpufreq_frequency_table g5_cpu_freqs[] = { + {CPUFREQ_HIGH, 0}, + {CPUFREQ_LOW, 0}, + {0, CPUFREQ_TABLE_END}, +}; + +static struct freq_attr* g5_cpu_freqs_attr[] = { + &cpufreq_freq_attr_scaling_available_freqs, + NULL, +}; + +/* Power mode data is an array of the 32 bits PCR values to use for + * the various frequencies, retreived from the device-tree + */ +static u32 *g5_pmode_data; +static int g5_pmode_max; +static int g5_pmode_cur; + +static DECLARE_MUTEX(g5_switch_mutex); + + +static struct smu_sdbp_fvt *g5_fvt_table; /* table of op. points */ +static int g5_fvt_count; /* number of op. points */ +static int g5_fvt_cur; /* current op. point */ + +/* ----------------- real hardware interface */ + +static void g5_switch_volt(int speed_mode) +{ + struct smu_simple_cmd cmd; + + DECLARE_COMPLETION(comp); + smu_queue_simple(&cmd, SMU_CMD_POWER_COMMAND, 8, smu_done_complete, + &comp, 'V', 'S', 'L', 'E', 'W', + 0xff, g5_fvt_cur+1, speed_mode); + wait_for_completion(&comp); +} + +static int g5_switch_freq(int speed_mode) +{ + struct cpufreq_freqs freqs; + int to; + + if (g5_pmode_cur == speed_mode) + return 0; + + down(&g5_switch_mutex); + + freqs.old = g5_cpu_freqs[g5_pmode_cur].frequency; + freqs.new = g5_cpu_freqs[speed_mode].frequency; + freqs.cpu = 0; + + cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); + + /* If frequency is going up, first ramp up the voltage */ + if (speed_mode < g5_pmode_cur) + g5_switch_volt(speed_mode); + + /* Clear PCR high */ + scom970_write(SCOM_PCR, 0); + /* Clear PCR low */ + scom970_write(SCOM_PCR, PCR_HILO_SELECT | 0); + /* Set PCR low */ + scom970_write(SCOM_PCR, PCR_HILO_SELECT | + g5_pmode_data[speed_mode]); + + /* Wait for completion */ + for (to = 0; to < 10; to++) { + unsigned long psr = scom970_read(SCOM_PSR); + + if ((psr & PSR_CMD_RECEIVED) == 0 && + (((psr >> PSR_CUR_SPEED_SHIFT) ^ + (g5_pmode_data[speed_mode] >> PCR_SPEED_SHIFT)) & 0x3) + == 0) + break; + if (psr & PSR_CMD_COMPLETED) + break; + udelay(100); + } + + /* If frequency is going down, last ramp the voltage */ + if (speed_mode > g5_pmode_cur) + g5_switch_volt(speed_mode); + + g5_pmode_cur = speed_mode; + ppc_proc_freq = g5_cpu_freqs[speed_mode].frequency * 1000ul; + + cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); + + up(&g5_switch_mutex); + + return 0; +} + +static int g5_query_freq(void) +{ + unsigned long psr = scom970_read(SCOM_PSR); + int i; + + for (i = 0; i <= g5_pmode_max; i++) + if ((((psr >> PSR_CUR_SPEED_SHIFT) ^ + (g5_pmode_data[i] >> PCR_SPEED_SHIFT)) & 0x3) == 0) + break; + return i; +} + +/* ----------------- cpufreq bookkeeping */ + +static int g5_cpufreq_verify(struct cpufreq_policy *policy) +{ + return cpufreq_frequency_table_verify(policy, g5_cpu_freqs); +} + +static int g5_cpufreq_target(struct cpufreq_policy *policy, + unsigned int target_freq, unsigned int relation) +{ + unsigned int newstate = 0; + + if (cpufreq_frequency_table_target(policy, g5_cpu_freqs, + target_freq, relation, &newstate)) + return -EINVAL; + + return g5_switch_freq(newstate); +} + +static unsigned int g5_cpufreq_get_speed(unsigned int cpu) +{ + return g5_cpu_freqs[g5_pmode_cur].frequency; +} + +static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy) +{ + if (policy->cpu != 0) + return -ENODEV; + + policy->governor = CPUFREQ_DEFAULT_GOVERNOR; + policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; + policy->cur = g5_cpu_freqs[g5_query_freq()].frequency; + cpufreq_frequency_table_get_attr(g5_cpu_freqs, policy->cpu); + + return cpufreq_frequency_table_cpuinfo(policy, + g5_cpu_freqs); +} + + +static struct cpufreq_driver g5_cpufreq_driver = { + .name = "powermac", + .owner = THIS_MODULE, + .flags = CPUFREQ_CONST_LOOPS, + .init = g5_cpufreq_cpu_init, + .verify = g5_cpufreq_verify, + .target = g5_cpufreq_target, + .get = g5_cpufreq_get_speed, + .attr = g5_cpu_freqs_attr, +}; + + +static int __init g5_cpufreq_init(void) +{ + struct device_node *cpunode; + unsigned int psize, ssize; + struct smu_sdbp_header *shdr; + unsigned long max_freq; + u32 *valp; + int rc = -ENODEV; + + /* Look for CPU and SMU nodes */ + cpunode = of_find_node_by_type(NULL, "cpu"); + if (!cpunode) { + DBG("No CPU node !\n"); + return -ENODEV; + } + + /* Check 970FX for now */ + valp = (u32 *)get_property(cpunode, "cpu-version", NULL); + if (!valp) { + DBG("No cpu-version property !\n"); + goto bail_noprops; + } + if (((*valp) >> 16) != 0x3c) { + DBG("Wrong CPU version: %08x\n", *valp); + goto bail_noprops; + } + + /* Look for the powertune data in the device-tree */ + g5_pmode_data = (u32 *)get_property(cpunode, "power-mode-data",&psize); + if (!g5_pmode_data) { + DBG("No power-mode-data !\n"); + goto bail_noprops; + } + g5_pmode_max = psize / sizeof(u32) - 1; + + /* Look for the FVT table */ + shdr = smu_get_sdb_partition(SMU_SDB_FVT_ID, NULL); + if (!shdr) + goto bail_noprops; + g5_fvt_table = (struct smu_sdbp_fvt *)&shdr[1]; + ssize = (shdr->len * sizeof(u32)) - sizeof(struct smu_sdbp_header); + g5_fvt_count = ssize / sizeof(struct smu_sdbp_fvt); + g5_fvt_cur = 0; + + /* Sanity checking */ + if (g5_fvt_count < 1 || g5_pmode_max < 1) + goto bail_noprops; + + /* + * From what I see, clock-frequency is always the maximal frequency. + * The current driver can not slew sysclk yet, so we really only deal + * with powertune steps for now. We also only implement full freq and + * half freq in this version. So far, I haven't yet seen a machine + * supporting anything else. + */ + valp = (u32 *)get_property(cpunode, "clock-frequency", NULL); + if (!valp) + return -ENODEV; + max_freq = (*valp)/1000; + g5_cpu_freqs[0].frequency = max_freq; + g5_cpu_freqs[1].frequency = max_freq/2; + + /* Check current frequency */ + g5_pmode_cur = g5_query_freq(); + if (g5_pmode_cur > 1) + /* We don't support anything but 1:1 and 1:2, fixup ... */ + g5_pmode_cur = 1; + + /* Force apply current frequency to make sure everything is in + * sync (voltage is right for example). Firmware may leave us with + * a strange setting ... + */ + g5_switch_freq(g5_pmode_cur); + + printk(KERN_INFO "Registering G5 CPU frequency driver\n"); + printk(KERN_INFO "Low: %d Mhz, High: %d Mhz, Cur: %d MHz\n", + g5_cpu_freqs[1].frequency/1000, + g5_cpu_freqs[0].frequency/1000, + g5_cpu_freqs[g5_pmode_cur].frequency/1000); + + rc = cpufreq_register_driver(&g5_cpufreq_driver); + + /* We keep the CPU node on hold... hopefully, Apple G5 don't have + * hotplug CPU with a dynamic device-tree ... + */ + return rc; + + bail_noprops: + of_node_put(cpunode); + + return rc; +} + +module_init(g5_cpufreq_init); + + +MODULE_LICENSE("GPL"); diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c index 80b58c1..7acb054 100644 --- a/arch/powerpc/platforms/powermac/setup.c +++ b/arch/powerpc/platforms/powermac/setup.c @@ -193,18 +193,6 @@ static void pmac_show_cpuinfo(struct seq_file *m) pmac_newworld ? "NewWorld" : "OldWorld"); } -static void pmac_show_percpuinfo(struct seq_file *m, int i) -{ -#ifdef CONFIG_CPU_FREQ_PMAC - extern unsigned int pmac_get_one_cpufreq(int i); - unsigned int freq = pmac_get_one_cpufreq(i); - if (freq != 0) { - seq_printf(m, "clock\t\t: %dMHz\n", freq/1000); - return; - } -#endif /* CONFIG_CPU_FREQ_PMAC */ -} - #ifndef CONFIG_ADB_CUDA int find_via_cuda(void) { @@ -767,7 +755,6 @@ struct machdep_calls __initdata pmac_md = { .setup_arch = pmac_setup_arch, .init_early = pmac_init_early, .show_cpuinfo = pmac_show_cpuinfo, - .show_percpuinfo = pmac_show_percpuinfo, .init_IRQ = pmac_pic_init, .get_irq = mpic_get_irq, /* changed later */ .pcibios_fixup = pmac_pcibios_fixup, diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig index 2130cc3..94a8127 100644 --- a/arch/ppc64/Kconfig +++ b/arch/ppc64/Kconfig @@ -173,6 +173,16 @@ config KEXEC support. As of this writing the exact hardware interface is strongly in flux, so no good recommendation can be made. +source "drivers/cpufreq/Kconfig" + +config CPU_FREQ_PMAC64 + bool "Support for some Apple G5s" + depends on CPU_FREQ && PMAC_SMU && PPC64 + select CPU_FREQ_TABLE + help + This adds support for frequency switching on Apple iMac G5, + and some of the more recent desktop G5 machines as well. + config IBMVIO depends on PPC_PSERIES || PPC_ISERIES bool diff --git a/arch/ppc64/kernel/misc.S b/arch/ppc64/kernel/misc.S index 077507f..914632e 100644 --- a/arch/ppc64/kernel/misc.S +++ b/arch/ppc64/kernel/misc.S @@ -560,7 +560,7 @@ _GLOBAL(real_readb) isync blr - /* +/* * Do an IO access in real mode */ _GLOBAL(real_writeb) @@ -593,6 +593,76 @@ _GLOBAL(real_writeb) #endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */ /* + * SCOM access functions for 970 (FX only for now) + * + * unsigned long scom970_read(unsigned int address); + * void scom970_write(unsigned int address, unsigned long value); + * + * The address passed in is the 24 bits register address. This code + * is 970 specific and will not check the status bits, so you should + * know what you are doing. + */ +_GLOBAL(scom970_read) + /* interrupts off */ + mfmsr r4 + ori r0,r4,MSR_EE + xori r0,r0,MSR_EE + mtmsrd r0,1 + + /* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits + * (including parity). On current CPUs they must be 0'd, + * and finally or in RW bit + */ + rlwinm r3,r3,8,0,15 + ori r3,r3,0x8000 + + /* do the actual scom read */ + sync + mtspr SPRN_SCOMC,r3 + isync + mfspr r3,SPRN_SCOMD + isync + mfspr r0,SPRN_SCOMC + isync + + /* XXX: fixup result on some buggy 970's (ouch ! we lost a bit, bah + * that's the best we can do). Not implemented yet as we don't use + * the scom on any of the bogus CPUs yet, but may have to be done + * ultimately + */ + + /* restore interrupts */ + mtmsrd r4,1 + blr + + +_GLOBAL(scom970_write) + /* interrupts off */ + mfmsr r5 + ori r0,r5,MSR_EE + xori r0,r0,MSR_EE + mtmsrd r0,1 + + /* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits + * (including parity). On current CPUs they must be 0'd. + */ + + rlwinm r3,r3,8,0,15 + + sync + mtspr SPRN_SCOMD,r4 /* write data */ + isync + mtspr SPRN_SCOMC,r3 /* write command */ + isync + mfspr 3,SPRN_SCOMC + isync + + /* restore interrupts */ + mtmsrd r5,1 + blr + + +/* * Create a kernel thread * kernel_thread(fn, arg, flags) */ diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c index 34f3c7e..a931e50 100644 --- a/drivers/macintosh/smu.c +++ b/drivers/macintosh/smu.c @@ -845,6 +845,18 @@ int smu_queue_i2c(struct smu_i2c_cmd *cmd) return 0; } +struct smu_sdbp_header *smu_get_sdb_partition(int id, unsigned int *size) +{ + char pname[32]; + + if (!smu) + return NULL; + + sprintf(pname, "sdb-partition-%02x", id); + return (struct smu_sdbp_header *)get_property(smu->of_node, + pname, size); +} +EXPORT_SYMBOL(smu_get_sdb_partition); /* diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h index da84841..489cf4c 100644 --- a/include/asm-powerpc/reg.h +++ b/include/asm-powerpc/reg.h @@ -396,6 +396,9 @@ #define SPRN_VRSAVE 0x100 /* Vector Register Save Register */ #define SPRN_XER 0x001 /* Fixed Point Exception Register */ +#define SPRN_SCOMC 0x114 /* SCOM Access Control */ +#define SPRN_SCOMD 0x115 /* SCOM Access DATA */ + /* Performance monitor SPRs */ #ifdef CONFIG_PPC64 #define SPRN_MMCR0 795 @@ -594,7 +597,11 @@ static inline void ppc64_runlatch_off(void) mtspr(SPRN_CTRLT, ctrl); } } -#endif + +extern unsigned long scom970_read(unsigned int address); +extern void scom970_write(unsigned int address, unsigned long value); + +#endif /* CONFIG_PPC64 */ #define __get_SP() ({unsigned long sp; \ asm volatile("mr %0,1": "=r" (sp)); sp;}) diff --git a/include/asm-powerpc/smu.h b/include/asm-powerpc/smu.h index dee8eef..959bad6 100644 --- a/include/asm-powerpc/smu.h +++ b/include/asm-powerpc/smu.h @@ -144,7 +144,11 @@ * - lenght 8 ("VSLEWxyz") has 3 additional bytes appended, and is * used to set the voltage slewing point. The SMU replies with "DONE" * I yet have to figure out their exact meaning of those 3 bytes in - * both cases. + * both cases. They seem to be: + * x = processor mask + * y = op. point index + * z = processor freq. step index + * I haven't yet decyphered result codes * */ #define SMU_CMD_POWER_COMMAND 0xaa @@ -333,6 +337,60 @@ extern int smu_queue_i2c(struct smu_i2c_cmd *cmd); #endif /* __KERNEL__ */ + +/* + * - SMU "sdb" partitions informations - + */ + + +/* + * Partition header format + */ +struct smu_sdbp_header { + __u8 id; + __u8 len; + __u8 version; + __u8 flags; +}; + +/* + * 32 bits integers are usually encoded with 2x16 bits swapped, + * this demangles them + */ +#define SMU_U32_MIX(x) ((((x) << 16) & 0xffff0000u) | (((x) >> 16) & 0xffffu)) + +/* This is the definition of the SMU sdb-partition-0x12 table (called + * CPU F/V/T operating points in Darwin). The definition for all those + * SMU tables should be moved to some separate file + */ +#define SMU_SDB_FVT_ID 0x12 + +struct smu_sdbp_fvt { + __u32 sysclk; /* Base SysClk frequency in Hz for + * this operating point + */ + __u8 pad; + __u8 maxtemp; /* Max temp. supported by this + * operating point + */ + + __u16 volts[3]; /* CPU core voltage for the 3 + * PowerTune modes, a mode with + * 0V = not supported. + */ +}; + +#ifdef __KERNEL__ +/* + * This returns the pointer to an SMU "sdb" partition data or NULL + * if not found. The data format is described below + */ +extern struct smu_sdbp_header *smu_get_sdb_partition(int id, + unsigned int *size); + +#endif /* __KERNEL__ */ + + /* * - Userland interface - */ -- cgit v0.10.2 From 183d020258dfd08178a05c6793dae10409db8abb Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 14:29:02 +1100 Subject: [PATCH] ppc64: SMU partition recovery This patch adds the ability to the SMU driver to recover missing calibration partitions from the SMU chip itself. It also adds some dynamic mecanism to /proc/device-tree so that new properties are visible to userland. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 3675ef4..f645adb 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -1974,14 +1974,29 @@ EXPORT_SYMBOL(get_property); /* * Add a property to a node */ -void prom_add_property(struct device_node* np, struct property* prop) +int prom_add_property(struct device_node* np, struct property* prop) { - struct property **next = &np->properties; + struct property **next; prop->next = NULL; - while (*next) + write_lock(&devtree_lock); + next = &np->properties; + while (*next) { + if (strcmp(prop->name, (*next)->name) == 0) { + /* duplicate ! don't insert it */ + write_unlock(&devtree_lock); + return -1; + } next = &(*next)->next; + } *next = prop; + write_unlock(&devtree_lock); + + /* try to add to proc as well if it was initialized */ + if (np->pde) + proc_device_tree_add_prop(np->pde, prop); + + return 0; } /* I quickly hacked that one, check against spec ! */ diff --git a/arch/ppc/syslib/prom.c b/arch/ppc/syslib/prom.c index 1b9aa0d..03b1fc9 100644 --- a/arch/ppc/syslib/prom.c +++ b/arch/ppc/syslib/prom.c @@ -1165,7 +1165,7 @@ get_property(struct device_node *np, const char *name, int *lenp) /* * Add a property to a node */ -void +int prom_add_property(struct device_node* np, struct property* prop) { struct property **next = &np->properties; @@ -1174,6 +1174,8 @@ prom_add_property(struct device_node* np, struct property* prop) while (*next) next = &(*next)->next; *next = prop; + + return 0; } /* I quickly hacked that one, check against spec ! */ diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c index 0e8961d..3402fbe 100644 --- a/arch/ppc64/kernel/prom.c +++ b/arch/ppc64/kernel/prom.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -1865,17 +1866,32 @@ get_property(struct device_node *np, const char *name, int *lenp) EXPORT_SYMBOL(get_property); /* - * Add a property to a node + * Add a property to a node. */ -void +int prom_add_property(struct device_node* np, struct property* prop) { - struct property **next = &np->properties; + struct property **next; prop->next = NULL; - while (*next) + write_lock(&devtree_lock); + next = &np->properties; + while (*next) { + if (strcmp(prop->name, (*next)->name) == 0) { + /* duplicate ! don't insert it */ + write_unlock(&devtree_lock); + return -1; + } next = &(*next)->next; + } *next = prop; + write_unlock(&devtree_lock); + + /* try to add to proc as well if it was initialized */ + if (np->pde) + proc_device_tree_add_prop(np->pde, prop); + + return 0; } #if 0 diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c index a931e50..a83c4ac 100644 --- a/drivers/macintosh/smu.c +++ b/drivers/macintosh/smu.c @@ -47,13 +47,13 @@ #include #include -#define VERSION "0.6" +#define VERSION "0.7" #define AUTHOR "(c) 2005 Benjamin Herrenschmidt, IBM Corp." #undef DEBUG_SMU #ifdef DEBUG_SMU -#define DPRINTK(fmt, args...) do { printk(KERN_DEBUG fmt , ##args); } while (0) +#define DPRINTK(fmt, args...) do { udbg_printf(KERN_DEBUG fmt , ##args); } while (0) #else #define DPRINTK(fmt, args...) do { } while (0) #endif @@ -92,7 +92,7 @@ struct smu_device { * for now, just hard code that */ static struct smu_device *smu; - +static DECLARE_MUTEX(smu_part_access); /* * SMU driver low level stuff @@ -113,9 +113,11 @@ static void smu_start_cmd(void) DPRINTK("SMU: starting cmd %x, %d bytes data\n", cmd->cmd, cmd->data_len); - DPRINTK("SMU: data buffer: %02x %02x %02x %02x ...\n", + DPRINTK("SMU: data buffer: %02x %02x %02x %02x %02x %02x %02x %02x\n", ((u8 *)cmd->data_buf)[0], ((u8 *)cmd->data_buf)[1], - ((u8 *)cmd->data_buf)[2], ((u8 *)cmd->data_buf)[3]); + ((u8 *)cmd->data_buf)[2], ((u8 *)cmd->data_buf)[3], + ((u8 *)cmd->data_buf)[4], ((u8 *)cmd->data_buf)[5], + ((u8 *)cmd->data_buf)[6], ((u8 *)cmd->data_buf)[7]); /* Fill the SMU command buffer */ smu->cmd_buf->cmd = cmd->cmd; @@ -440,7 +442,7 @@ int smu_present(void) EXPORT_SYMBOL(smu_present); -int smu_init (void) +int __init smu_init (void) { struct device_node *np; u32 *data; @@ -845,16 +847,154 @@ int smu_queue_i2c(struct smu_i2c_cmd *cmd) return 0; } -struct smu_sdbp_header *smu_get_sdb_partition(int id, unsigned int *size) +/* + * Handling of "partitions" + */ + +static int smu_read_datablock(u8 *dest, unsigned int addr, unsigned int len) +{ + DECLARE_COMPLETION(comp); + unsigned int chunk; + struct smu_cmd cmd; + int rc; + u8 params[8]; + + /* We currently use a chunk size of 0xe. We could check the + * SMU firmware version and use bigger sizes though + */ + chunk = 0xe; + + while (len) { + unsigned int clen = min(len, chunk); + + cmd.cmd = SMU_CMD_MISC_ee_COMMAND; + cmd.data_len = 7; + cmd.data_buf = params; + cmd.reply_len = chunk; + cmd.reply_buf = dest; + cmd.done = smu_done_complete; + cmd.misc = ∁ + params[0] = SMU_CMD_MISC_ee_GET_DATABLOCK_REC; + params[1] = 0x4; + *((u32 *)¶ms[2]) = addr; + params[6] = clen; + + rc = smu_queue_cmd(&cmd); + if (rc) + return rc; + wait_for_completion(&comp); + if (cmd.status != 0) + return rc; + if (cmd.reply_len != clen) { + printk(KERN_DEBUG "SMU: short read in " + "smu_read_datablock, got: %d, want: %d\n", + cmd.reply_len, clen); + return -EIO; + } + len -= clen; + addr += clen; + dest += clen; + } + return 0; +} + +static struct smu_sdbp_header *smu_create_sdb_partition(int id) +{ + DECLARE_COMPLETION(comp); + struct smu_simple_cmd cmd; + unsigned int addr, len, tlen; + struct smu_sdbp_header *hdr; + struct property *prop; + + /* First query the partition info */ + smu_queue_simple(&cmd, SMU_CMD_PARTITION_COMMAND, 2, + smu_done_complete, &comp, + SMU_CMD_PARTITION_LATEST, id); + wait_for_completion(&comp); + + /* Partition doesn't exist (or other error) */ + if (cmd.cmd.status != 0 || cmd.cmd.reply_len != 6) + return NULL; + + /* Fetch address and length from reply */ + addr = *((u16 *)cmd.buffer); + len = cmd.buffer[3] << 2; + /* Calucluate total length to allocate, including the 17 bytes + * for "sdb-partition-XX" that we append at the end of the buffer + */ + tlen = sizeof(struct property) + len + 18; + + prop = kcalloc(tlen, 1, GFP_KERNEL); + if (prop == NULL) + return NULL; + hdr = (struct smu_sdbp_header *)(prop + 1); + prop->name = ((char *)prop) + tlen - 18; + sprintf(prop->name, "sdb-partition-%02x", id); + prop->length = len; + prop->value = (unsigned char *)hdr; + prop->next = NULL; + + /* Read the datablock */ + if (smu_read_datablock((u8 *)hdr, addr, len)) { + printk(KERN_DEBUG "SMU: datablock read failed while reading " + "partition %02x !\n", id); + goto failure; + } + + /* Got it, check a few things and create the property */ + if (hdr->id != id) { + printk(KERN_DEBUG "SMU: Reading partition %02x and got " + "%02x !\n", id, hdr->id); + goto failure; + } + if (prom_add_property(smu->of_node, prop)) { + printk(KERN_DEBUG "SMU: Failed creating sdb-partition-%02x " + "property !\n", id); + goto failure; + } + + return hdr; + failure: + kfree(prop); + return NULL; +} + +/* Note: Only allowed to return error code in pointers (using ERR_PTR) + * when interruptible is 1 + */ +struct smu_sdbp_header *__smu_get_sdb_partition(int id, unsigned int *size, + int interruptible) { char pname[32]; + struct smu_sdbp_header *part; if (!smu) return NULL; sprintf(pname, "sdb-partition-%02x", id); - return (struct smu_sdbp_header *)get_property(smu->of_node, + + if (interruptible) { + int rc; + rc = down_interruptible(&smu_part_access); + if (rc) + return ERR_PTR(rc); + } else + down(&smu_part_access); + + part = (struct smu_sdbp_header *)get_property(smu->of_node, pname, size); + if (part == NULL) { + part = smu_create_sdb_partition(id); + if (part != NULL && size) + *size = part->len << 2; + } + up(&smu_part_access); + return part; +} + +struct smu_sdbp_header *smu_get_sdb_partition(int id, unsigned int *size) +{ + return __smu_get_sdb_partition(id, size, 0); } EXPORT_SYMBOL(smu_get_sdb_partition); @@ -930,6 +1070,14 @@ static ssize_t smu_write(struct file *file, const char __user *buf, else if (hdr.cmdtype == SMU_CMDTYPE_WANTS_EVENTS) { pp->mode = smu_file_events; return 0; + } else if (hdr.cmdtype == SMU_CMDTYPE_GET_PARTITION) { + struct smu_sdbp_header *part; + part = __smu_get_sdb_partition(hdr.cmd, NULL, 1); + if (part == NULL) + return -EINVAL; + else if (IS_ERR(part)) + return PTR_ERR(part); + return 0; } else if (hdr.cmdtype != SMU_CMDTYPE_SMU) return -EINVAL; else if (pp->mode != smu_file_commands) diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c index 6fd57f1..fb117b7 100644 --- a/fs/proc/proc_devtree.c +++ b/fs/proc/proc_devtree.c @@ -49,6 +49,39 @@ static int property_read_proc(char *page, char **start, off_t off, */ /* + * Add a property to a node + */ +static struct proc_dir_entry * +__proc_device_tree_add_prop(struct proc_dir_entry *de, struct property *pp) +{ + struct proc_dir_entry *ent; + + /* + * Unfortunately proc_register puts each new entry + * at the beginning of the list. So we rearrange them. + */ + ent = create_proc_read_entry(pp->name, + strncmp(pp->name, "security-", 9) + ? S_IRUGO : S_IRUSR, de, + property_read_proc, pp); + if (ent == NULL) + return NULL; + + if (!strncmp(pp->name, "security-", 9)) + ent->size = 0; /* don't leak number of password chars */ + else + ent->size = pp->length; + + return ent; +} + + +void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop) +{ + __proc_device_tree_add_prop(pde, prop); +} + +/* * Process a node, adding entries for its children and its properties. */ void proc_device_tree_add_node(struct device_node *np, @@ -57,11 +90,9 @@ void proc_device_tree_add_node(struct device_node *np, struct property *pp; struct proc_dir_entry *ent; struct device_node *child; - struct proc_dir_entry *list = NULL, **lastp; const char *p; set_node_proc_entry(np, de); - lastp = &list; for (child = NULL; (child = of_get_next_child(np, child));) { p = strrchr(child->full_name, '/'); if (!p) @@ -71,9 +102,6 @@ void proc_device_tree_add_node(struct device_node *np, ent = proc_mkdir(p, de); if (ent == 0) break; - *lastp = ent; - ent->next = NULL; - lastp = &ent->next; proc_device_tree_add_node(child, ent); } of_node_put(child); @@ -84,7 +112,7 @@ void proc_device_tree_add_node(struct device_node *np, * properties are quite unimportant for us though, thus we * simply "skip" them here, but we do have to check. */ - for (ent = list; ent != NULL; ent = ent->next) + for (ent = de->subdir; ent != NULL; ent = ent->next) if (!strcmp(ent->name, pp->name)) break; if (ent != NULL) { @@ -94,25 +122,10 @@ void proc_device_tree_add_node(struct device_node *np, continue; } - /* - * Unfortunately proc_register puts each new entry - * at the beginning of the list. So we rearrange them. - */ - ent = create_proc_read_entry(pp->name, - strncmp(pp->name, "security-", 9) - ? S_IRUGO : S_IRUSR, de, - property_read_proc, pp); + ent = __proc_device_tree_add_prop(de, pp); if (ent == 0) break; - if (!strncmp(pp->name, "security-", 9)) - ent->size = 0; /* don't leak number of password chars */ - else - ent->size = pp->length; - ent->next = NULL; - *lastp = ent; - lastp = &ent->next; } - de->subdir = list; } /* diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h index 7587bf5..f999df1 100644 --- a/include/asm-powerpc/prom.h +++ b/include/asm-powerpc/prom.h @@ -203,7 +203,7 @@ extern int prom_n_addr_cells(struct device_node* np); extern int prom_n_size_cells(struct device_node* np); extern int prom_n_intr_cells(struct device_node* np); extern void prom_get_irq_senses(unsigned char *senses, int off, int max); -extern void prom_add_property(struct device_node* np, struct property* prop); +extern int prom_add_property(struct device_node* np, struct property* prop); #ifdef CONFIG_PPC32 /* diff --git a/include/asm-powerpc/smu.h b/include/asm-powerpc/smu.h index 959bad6..76c29a9 100644 --- a/include/asm-powerpc/smu.h +++ b/include/asm-powerpc/smu.h @@ -20,16 +20,52 @@ /* * Partition info commands * - * I do not know what those are for at this point + * These commands are used to retreive the sdb-partition-XX datas from + * the SMU. The lenght is always 2. First byte is the subcommand code + * and second byte is the partition ID. + * + * The reply is 6 bytes: + * + * - 0..1 : partition address + * - 2 : a byte containing the partition ID + * - 3 : length (maybe other bits are rest of header ?) + * + * The data must then be obtained with calls to another command: + * SMU_CMD_MISC_ee_GET_DATABLOCK_REC (described below). */ #define SMU_CMD_PARTITION_COMMAND 0x3e +#define SMU_CMD_PARTITION_LATEST 0x01 +#define SMU_CMD_PARTITION_BASE 0x02 +#define SMU_CMD_PARTITION_UPDATE 0x03 /* * Fan control * - * This is a "mux" for fan control commands, first byte is the - * "sub" command. + * This is a "mux" for fan control commands. The command seem to + * act differently based on the number of arguments. With 1 byte + * of argument, this seem to be queries for fans status, setpoint, + * etc..., while with 0xe arguments, we will set the fans speeds. + * + * Queries (1 byte arg): + * --------------------- + * + * arg=0x01: read RPM fans status + * arg=0x02: read RPM fans setpoint + * arg=0x11: read PWM fans status + * arg=0x12: read PWM fans setpoint + * + * the "status" queries return the current speed while the "setpoint" ones + * return the programmed/target speed. It _seems_ that the result is a bit + * mask in the first byte of active/available fans, followed by 6 words (16 + * bits) containing the requested speed. + * + * Setpoint (14 bytes arg): + * ------------------------ + * + * first arg byte is 0 for RPM fans and 0x10 for PWM. Second arg byte is the + * mask of fans affected by the command. Followed by 6 words containing the + * setpoint value for selected fans in the mask (or 0 if mask value is 0) */ #define SMU_CMD_FAN_COMMAND 0x4a @@ -156,6 +192,14 @@ #define SMU_CMD_POWER_SHUTDOWN "SHUTDOWN" #define SMU_CMD_POWER_VOLTAGE_SLEW "VSLEW" +/* + * Read ADC sensors + * + * This command takes one byte of parameter: the sensor ID (or "reg" + * value in the device-tree) and returns a 16 bits value + */ +#define SMU_CMD_READ_ADC 0xd8 + /* Misc commands * * This command seem to be a grab bag of various things @@ -176,6 +220,25 @@ * Misc commands * * This command seem to be a grab bag of various things + * + * SMU_CMD_MISC_ee_GET_DATABLOCK_REC is used, among others, to + * transfer blocks of data from the SMU. So far, I've decrypted it's + * usage to retreive partition data. In order to do that, you have to + * break your transfer in "chunks" since that command cannot transfer + * more than a chunk at a time. The chunk size used by OF is 0xe bytes, + * but it seems that the darwin driver will let you do 0x1e bytes if + * your "PMU" version is >= 0x30. You can get the "PMU" version apparently + * either in the last 16 bits of property "smu-version-pmu" or as the 16 + * bytes at offset 1 of "smu-version-info" + * + * For each chunk, the command takes 7 bytes of arguments: + * byte 0: subcommand code (0x02) + * byte 1: 0x04 (always, I don't know what it means, maybe the address + * space to use or some other nicety. It's hard coded in OF) + * byte 2..5: SMU address of the chunk (big endian 32 bits) + * byte 6: size to transfer (up to max chunk size) + * + * The data is returned directly */ #define SMU_CMD_MISC_ee_COMMAND 0xee #define SMU_CMD_MISC_ee_GET_DATABLOCK_REC 0x02 @@ -353,21 +416,26 @@ struct smu_sdbp_header { __u8 flags; }; -/* - * 32 bits integers are usually encoded with 2x16 bits swapped, - * this demangles them + + /* + * demangle 16 and 32 bits integer in some SMU partitions + * (currently, afaik, this concerns only the FVT partition + * (0x12) */ -#define SMU_U32_MIX(x) ((((x) << 16) & 0xffff0000u) | (((x) >> 16) & 0xffffu)) +#define SMU_U16_MIX(x) le16_to_cpu(x); +#define SMU_U32_MIX(x) ((((x) & 0xff00ff00u) >> 8)|(((x) & 0x00ff00ffu) << 8)) + /* This is the definition of the SMU sdb-partition-0x12 table (called * CPU F/V/T operating points in Darwin). The definition for all those * SMU tables should be moved to some separate file */ -#define SMU_SDB_FVT_ID 0x12 +#define SMU_SDB_FVT_ID 0x12 struct smu_sdbp_fvt { __u32 sysclk; /* Base SysClk frequency in Hz for - * this operating point + * this operating point. Value need to + * be unmixed with SMU_U32_MIX() */ __u8 pad; __u8 maxtemp; /* Max temp. supported by this @@ -376,10 +444,73 @@ struct smu_sdbp_fvt { __u16 volts[3]; /* CPU core voltage for the 3 * PowerTune modes, a mode with - * 0V = not supported. + * 0V = not supported. Value need + * to be unmixed with SMU_U16_MIX() */ }; +/* This partition contains voltage & current sensor calibration + * informations + */ +#define SMU_SDB_CPUVCP_ID 0x21 + +struct smu_sdbp_cpuvcp { + __u16 volt_scale; /* u4.12 fixed point */ + __s16 volt_offset; /* s4.12 fixed point */ + __u16 curr_scale; /* u4.12 fixed point */ + __s16 curr_offset; /* s4.12 fixed point */ + __s32 power_quads[3]; /* s4.28 fixed point */ +}; + +/* This partition contains CPU thermal diode calibration + */ +#define SMU_SDB_CPUDIODE_ID 0x18 + +struct smu_sdbp_cpudiode { + __u16 m_value; /* u1.15 fixed point */ + __s16 b_value; /* s10.6 fixed point */ + +}; + +/* This partition contains Slots power calibration + */ +#define SMU_SDB_SLOTSPOW_ID 0x78 + +struct smu_sdbp_slotspow { + __u16 pow_scale; /* u4.12 fixed point */ + __s16 pow_offset; /* s4.12 fixed point */ +}; + +/* This partition contains machine specific version information about + * the sensor/control layout + */ +#define SMU_SDB_SENSORTREE_ID 0x25 + +struct smu_sdbp_sensortree { + u8 model_id; + u8 unknown[3]; +}; + +/* This partition contains CPU thermal control PID informations. So far + * only single CPU machines have been seen with an SMU, so we assume this + * carries only informations for those + */ +#define SMU_SDB_CPUPIDDATA_ID 0x17 + +struct smu_sdbp_cpupiddata { + u8 unknown1; + u8 target_temp_delta; + u8 unknown2; + u8 history_len; + s16 power_adj; + u16 max_power; + s32 gp,gr,gd; +}; + + +/* Other partitions without known structures */ +#define SMU_SDB_DEBUG_SWITCHES_ID 0x05 + #ifdef __KERNEL__ /* * This returns the pointer to an SMU "sdb" partition data or NULL @@ -423,8 +554,10 @@ struct smu_user_cmd_hdr __u32 cmdtype; #define SMU_CMDTYPE_SMU 0 /* SMU command */ #define SMU_CMDTYPE_WANTS_EVENTS 1 /* switch fd to events mode */ +#define SMU_CMDTYPE_GET_PARTITION 2 /* retreive an sdb partition */ __u8 cmd; /* SMU command byte */ + __u8 pad[3]; /* padding */ __u32 data_len; /* Lenght of data following */ }; diff --git a/include/asm-ppc/prom.h b/include/asm-ppc/prom.h index 75c0637..3e39827 100644 --- a/include/asm-ppc/prom.h +++ b/include/asm-ppc/prom.h @@ -93,7 +93,7 @@ extern int device_is_compatible(struct device_node *device, const char *); extern int machine_is_compatible(const char *compat); extern unsigned char *get_property(struct device_node *node, const char *name, int *lenp); -extern void prom_add_property(struct device_node* np, struct property* prop); +extern int prom_add_property(struct device_node* np, struct property* prop); extern void prom_get_irq_senses(unsigned char *, int, int); extern int prom_n_addr_cells(struct device_node* np); extern int prom_n_size_cells(struct device_node* np); diff --git a/include/asm-ppc64/prom.h b/include/asm-ppc64/prom.h index bdb4717..76bb026 100644 --- a/include/asm-ppc64/prom.h +++ b/include/asm-ppc64/prom.h @@ -213,6 +213,6 @@ extern int prom_n_addr_cells(struct device_node* np); extern int prom_n_size_cells(struct device_node* np); extern int prom_n_intr_cells(struct device_node* np); extern void prom_get_irq_senses(unsigned char *senses, int off, int max); -extern void prom_add_property(struct device_node* np, struct property* prop); +extern int prom_add_property(struct device_node* np, struct property* prop); #endif /* _PPC64_PROM_H */ diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 0563581..65ceeaa 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -139,15 +139,12 @@ extern void proc_tty_unregister_driver(struct tty_driver *driver); /* * proc_devtree.c */ +#ifdef CONFIG_PROC_DEVICETREE struct device_node; +struct property; extern void proc_device_tree_init(void); -#ifdef CONFIG_PROC_DEVICETREE extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *); -#else /* !CONFIG_PROC_DEVICETREE */ -static inline void proc_device_tree_add_node(struct device_node *np, struct proc_dir_entry *pde) -{ - return; -} +extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop); #endif /* CONFIG_PROC_DEVICETREE */ extern struct proc_dir_entry *proc_symlink(const char *, -- cgit v0.10.2 From c618cf19995ef00c7ab85a9734abe028de9c08d4 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 14:32:28 +1100 Subject: [PATCH] ppc64: Update g5_defconfig for ARCH=powerpc This patch updates g5_defconfig for ARCH=powerpc in order to add the SMU support & thermal drivers to it, the pmac sound driver (works on some G5s) and replaces rivafb with nvidiafb which works better for the cards found in G5 based machines. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig index 6323065..e76854f 100644 --- a/arch/powerpc/configs/g5_defconfig +++ b/arch/powerpc/configs/g5_defconfig @@ -1,18 +1,32 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.14-rc4 -# Thu Oct 20 08:30:23 2005 +# Linux kernel version: 2.6.14 +# Mon Nov 7 13:37:59 2005 # +CONFIG_PPC64=y CONFIG_64BIT=y +CONFIG_PPC_MERGE=y CONFIG_MMU=y +CONFIG_GENERIC_HARDIRQS=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_GENERIC_CALIBRATE_DELAY=y -CONFIG_GENERIC_ISA_DMA=y +CONFIG_PPC=y CONFIG_EARLY_PRINTK=y CONFIG_COMPAT=y +CONFIG_SYSVIPC_COMPAT=y CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y -CONFIG_FORCE_MAX_ZONEORDER=13 + +# +# Processor support +# +CONFIG_POWER4_ONLY=y +CONFIG_POWER4=y +CONFIG_PPC_FPU=y +CONFIG_ALTIVEC=y +CONFIG_PPC_STD_MMU=y +CONFIG_SMP=y +CONFIG_NR_CPUS=2 # # Code maturity level options @@ -67,30 +81,60 @@ CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y CONFIG_KMOD=y CONFIG_STOP_MACHINE=y -CONFIG_SYSVIPC_COMPAT=y # # Platform support # -# CONFIG_PPC_ISERIES is not set CONFIG_PPC_MULTIPLATFORM=y +# CONFIG_PPC_ISERIES is not set +# CONFIG_EMBEDDED6xx is not set +# CONFIG_APUS is not set # CONFIG_PPC_PSERIES is not set -# CONFIG_PPC_BPA is not set CONFIG_PPC_PMAC=y +CONFIG_PPC_PMAC64=y # CONFIG_PPC_MAPLE is not set -CONFIG_PPC=y -CONFIG_PPC64=y +# CONFIG_PPC_CELL is not set CONFIG_PPC_OF=y -CONFIG_MPIC=y -CONFIG_ALTIVEC=y -CONFIG_KEXEC=y CONFIG_U3_DART=y -CONFIG_PPC_PMAC64=y -CONFIG_BOOTX_TEXT=y -CONFIG_POWER4_ONLY=y +CONFIG_MPIC=y +# CONFIG_PPC_RTAS is not set +# CONFIG_MMIO_NVRAM is not set +# CONFIG_PPC_MPC106 is not set +CONFIG_GENERIC_TBSYNC=y +CONFIG_CPU_FREQ=y +CONFIG_CPU_FREQ_TABLE=y +# CONFIG_CPU_FREQ_DEBUG is not set +CONFIG_CPU_FREQ_STAT=y +# CONFIG_CPU_FREQ_STAT_DETAILS is not set +CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set +CONFIG_CPU_FREQ_GOV_PERFORMANCE=y +CONFIG_CPU_FREQ_GOV_POWERSAVE=y +CONFIG_CPU_FREQ_GOV_USERSPACE=y +# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set +# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set +CONFIG_CPU_FREQ_PMAC64=y +# CONFIG_WANT_EARLY_SERIAL is not set + +# +# Kernel options +# +# CONFIG_HZ_100 is not set +CONFIG_HZ_250=y +# CONFIG_HZ_1000 is not set +CONFIG_HZ=250 +CONFIG_PREEMPT_NONE=y +# CONFIG_PREEMPT_VOLUNTARY is not set +# CONFIG_PREEMPT is not set +# CONFIG_PREEMPT_BKL is not set +CONFIG_BINFMT_ELF=y +# CONFIG_BINFMT_MISC is not set +CONFIG_FORCE_MAX_ZONEORDER=13 CONFIG_IOMMU_VMERGE=y -CONFIG_SMP=y -CONFIG_NR_CPUS=2 +# CONFIG_HOTPLUG_CPU is not set +CONFIG_KEXEC=y +CONFIG_IRQ_ALL_CPUS=y +# CONFIG_NUMA is not set CONFIG_ARCH_SELECT_MEMORY_MODEL=y CONFIG_ARCH_FLATMEM_ENABLE=y CONFIG_SELECT_MEMORY_MODEL=y @@ -100,28 +144,21 @@ CONFIG_FLATMEM_MANUAL=y CONFIG_FLATMEM=y CONFIG_FLAT_NODE_MEM_MAP=y # CONFIG_SPARSEMEM_STATIC is not set -# CONFIG_NUMA is not set +CONFIG_SPLIT_PTLOCK_CPUS=4 +# CONFIG_PPC_64K_PAGES is not set # CONFIG_SCHED_SMT is not set -CONFIG_PREEMPT_NONE=y -# CONFIG_PREEMPT_VOLUNTARY is not set -# CONFIG_PREEMPT is not set -# CONFIG_PREEMPT_BKL is not set -# CONFIG_HZ_100 is not set -CONFIG_HZ_250=y -# CONFIG_HZ_1000 is not set -CONFIG_HZ=250 -CONFIG_GENERIC_HARDIRQS=y -CONFIG_SECCOMP=y -CONFIG_BINFMT_ELF=y -# CONFIG_BINFMT_MISC is not set -# CONFIG_HOTPLUG_CPU is not set CONFIG_PROC_DEVICETREE=y # CONFIG_CMDLINE_BOOL is not set +# CONFIG_PM is not set +CONFIG_SECCOMP=y CONFIG_ISA_DMA_API=y # -# Bus Options +# Bus options # +CONFIG_GENERIC_ISA_DMA=y +# CONFIG_PPC_I8259 is not set +# CONFIG_PPC_INDIRECT_PCI is not set CONFIG_PCI=y CONFIG_PCI_DOMAINS=y CONFIG_PCI_LEGACY_PROC=y @@ -136,6 +173,7 @@ CONFIG_PCI_LEGACY_PROC=y # PCI Hotplug Support # # CONFIG_HOTPLUG_PCI is not set +CONFIG_KERNEL_START=0xc000000000000000 # # Networking @@ -276,6 +314,10 @@ CONFIG_LLC=y # CONFIG_NET_DIVERT is not set # CONFIG_ECONET is not set # CONFIG_WAN_ROUTER is not set + +# +# QoS and/or fair queueing +# # CONFIG_NET_SCHED is not set CONFIG_NET_CLS_ROUTE=y @@ -348,6 +390,11 @@ CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y +CONFIG_DEFAULT_AS=y +# CONFIG_DEFAULT_DEADLINE is not set +# CONFIG_DEFAULT_CFQ is not set +# CONFIG_DEFAULT_NOOP is not set +CONFIG_DEFAULT_IOSCHED="anticipatory" # CONFIG_ATA_OVER_ETH is not set # @@ -449,6 +496,7 @@ CONFIG_SCSI_SPI_ATTRS=y # # SCSI low-level drivers # +# CONFIG_ISCSI_TCP is not set # CONFIG_BLK_DEV_3W_XXXX_RAID is not set # CONFIG_SCSI_3W_9XXX is not set # CONFIG_SCSI_ACARD is not set @@ -465,10 +513,12 @@ CONFIG_SCSI_SATA_SVW=y # CONFIG_SCSI_ATA_PIIX is not set # CONFIG_SCSI_SATA_MV is not set # CONFIG_SCSI_SATA_NV is not set -# CONFIG_SCSI_SATA_PROMISE is not set +# CONFIG_SCSI_PDC_ADMA is not set # CONFIG_SCSI_SATA_QSTOR is not set +# CONFIG_SCSI_SATA_PROMISE is not set # CONFIG_SCSI_SATA_SX4 is not set # CONFIG_SCSI_SATA_SIL is not set +# CONFIG_SCSI_SATA_SIL24 is not set # CONFIG_SCSI_SATA_SIS is not set # CONFIG_SCSI_SATA_ULI is not set # CONFIG_SCSI_SATA_VIA is not set @@ -567,6 +617,9 @@ CONFIG_IEEE1394_RAWIO=y CONFIG_ADB_PMU=y CONFIG_PMAC_SMU=y CONFIG_THERM_PM72=y +CONFIG_WINDFARM=y +CONFIG_WINDFARM_PM81=y +CONFIG_WINDFARM_PM91=y # # Network device support @@ -603,6 +656,7 @@ CONFIG_SUNGEM=y # CONFIG_NET_TULIP is not set # CONFIG_HP100 is not set # CONFIG_NET_PCI is not set +# CONFIG_FEC_8XX is not set # # Ethernet (1000 Mbit) @@ -768,6 +822,7 @@ CONFIG_MAX_RAW_DEVS=256 # TPM devices # # CONFIG_TCG_TPM is not set +# CONFIG_TELCLOCK is not set # # I2C support @@ -820,6 +875,7 @@ CONFIG_I2C_PMAC_SMU=y # CONFIG_SENSORS_PCF8591 is not set # CONFIG_SENSORS_RTC8564 is not set # CONFIG_SENSORS_MAX6875 is not set +# CONFIG_RTC_X1205_I2C is not set # CONFIG_I2C_DEBUG_CORE is not set # CONFIG_I2C_DEBUG_ALGO is not set # CONFIG_I2C_DEBUG_BUS is not set @@ -876,10 +932,9 @@ CONFIG_FB_OF=y # CONFIG_FB_ASILIANT is not set # CONFIG_FB_IMSTT is not set # CONFIG_FB_VGA16 is not set -# CONFIG_FB_NVIDIA is not set -CONFIG_FB_RIVA=y -# CONFIG_FB_RIVA_I2C is not set -# CONFIG_FB_RIVA_DEBUG is not set +CONFIG_FB_NVIDIA=y +CONFIG_FB_NVIDIA_I2C=y +# CONFIG_FB_RIVA is not set # CONFIG_FB_MATROX is not set # CONFIG_FB_RADEON_OLD is not set CONFIG_FB_RADEON=y @@ -924,7 +979,96 @@ CONFIG_LCD_DEVICE=y # # Sound # -# CONFIG_SOUND is not set +CONFIG_SOUND=m + +# +# Advanced Linux Sound Architecture +# +CONFIG_SND=m +CONFIG_SND_TIMER=m +CONFIG_SND_PCM=m +CONFIG_SND_HWDEP=m +CONFIG_SND_RAWMIDI=m +CONFIG_SND_SEQUENCER=m +# CONFIG_SND_SEQ_DUMMY is not set +CONFIG_SND_OSSEMUL=y +CONFIG_SND_MIXER_OSS=m +CONFIG_SND_PCM_OSS=m +CONFIG_SND_SEQUENCER_OSS=y +# CONFIG_SND_VERBOSE_PRINTK is not set +# CONFIG_SND_DEBUG is not set +CONFIG_SND_GENERIC_DRIVER=y + +# +# Generic devices +# +# CONFIG_SND_DUMMY is not set +# CONFIG_SND_VIRMIDI is not set +# CONFIG_SND_MTPAV is not set +# CONFIG_SND_SERIAL_U16550 is not set +# CONFIG_SND_MPU401 is not set + +# +# PCI devices +# +# CONFIG_SND_ALI5451 is not set +# CONFIG_SND_ATIIXP is not set +# CONFIG_SND_ATIIXP_MODEM is not set +# CONFIG_SND_AU8810 is not set +# CONFIG_SND_AU8820 is not set +# CONFIG_SND_AU8830 is not set +# CONFIG_SND_AZT3328 is not set +# CONFIG_SND_BT87X is not set +# CONFIG_SND_CS46XX is not set +# CONFIG_SND_CS4281 is not set +# CONFIG_SND_EMU10K1 is not set +# CONFIG_SND_EMU10K1X is not set +# CONFIG_SND_CA0106 is not set +# CONFIG_SND_KORG1212 is not set +# CONFIG_SND_MIXART is not set +# CONFIG_SND_NM256 is not set +# CONFIG_SND_RME32 is not set +# CONFIG_SND_RME96 is not set +# CONFIG_SND_RME9652 is not set +# CONFIG_SND_HDSP is not set +# CONFIG_SND_HDSPM is not set +# CONFIG_SND_TRIDENT is not set +# CONFIG_SND_YMFPCI is not set +# CONFIG_SND_AD1889 is not set +# CONFIG_SND_ALS4000 is not set +# CONFIG_SND_CMIPCI is not set +# CONFIG_SND_ENS1370 is not set +# CONFIG_SND_ENS1371 is not set +# CONFIG_SND_ES1938 is not set +# CONFIG_SND_ES1968 is not set +# CONFIG_SND_MAESTRO3 is not set +# CONFIG_SND_FM801 is not set +# CONFIG_SND_ICE1712 is not set +# CONFIG_SND_ICE1724 is not set +# CONFIG_SND_INTEL8X0 is not set +# CONFIG_SND_INTEL8X0M is not set +# CONFIG_SND_SONICVIBES is not set +# CONFIG_SND_VIA82XX is not set +# CONFIG_SND_VIA82XX_MODEM is not set +# CONFIG_SND_VX222 is not set +# CONFIG_SND_HDA_INTEL is not set + +# +# ALSA PowerMac devices +# +CONFIG_SND_POWERMAC=m +CONFIG_SND_POWERMAC_AUTO_DRC=y + +# +# USB devices +# +CONFIG_SND_USB_AUDIO=m +# CONFIG_SND_USB_USX2Y is not set + +# +# Open Sound System +# +# CONFIG_SOUND_PRIME is not set # # USB support @@ -958,12 +1102,16 @@ CONFIG_USB_OHCI_LITTLE_ENDIAN=y # # USB Device Class drivers # -# CONFIG_USB_BLUETOOTH_TTY is not set +# CONFIG_OBSOLETE_OSS_USB_DRIVER is not set CONFIG_USB_ACM=m CONFIG_USB_PRINTER=y # -# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information +# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' +# + +# +# may also be needed; see USB_STORAGE Help for more information # CONFIG_USB_STORAGE=y # CONFIG_USB_STORAGE_DEBUG is not set @@ -1074,6 +1222,7 @@ CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y CONFIG_USB_SERIAL_KLSI=m CONFIG_USB_SERIAL_KOBIL_SCT=m CONFIG_USB_SERIAL_MCT_U232=m +# CONFIG_USB_SERIAL_NOKIA_DKU2 is not set CONFIG_USB_SERIAL_PL2303=m # CONFIG_USB_SERIAL_HP4X is not set CONFIG_USB_SERIAL_SAFE=m @@ -1311,6 +1460,20 @@ CONFIG_NLS_ISO8859_15=y CONFIG_NLS_UTF8=y # +# Library routines +# +CONFIG_CRC_CCITT=m +# CONFIG_CRC16 is not set +CONFIG_CRC32=y +CONFIG_LIBCRC32C=m +CONFIG_ZLIB_INFLATE=y +CONFIG_ZLIB_DEFLATE=m +CONFIG_TEXTSEARCH=y +CONFIG_TEXTSEARCH_KMP=m +CONFIG_TEXTSEARCH_BM=m +CONFIG_TEXTSEARCH_FSM=m + +# # Profiling support # CONFIG_PROFILING=y @@ -1331,12 +1494,14 @@ CONFIG_DETECT_SOFTLOCKUP=y # CONFIG_DEBUG_KOBJECT is not set # CONFIG_DEBUG_INFO is not set CONFIG_DEBUG_FS=y +# CONFIG_DEBUG_VM is not set +# CONFIG_RCU_TORTURE_TEST is not set # CONFIG_DEBUG_STACKOVERFLOW is not set # CONFIG_KPROBES is not set # CONFIG_DEBUG_STACK_USAGE is not set # CONFIG_DEBUGGER is not set -# CONFIG_PPCDBG is not set CONFIG_IRQSTACKS=y +CONFIG_BOOTX_TEXT=y # # Security options @@ -1376,17 +1541,3 @@ CONFIG_CRYPTO_TEST=m # # Hardware crypto devices # - -# -# Library routines -# -CONFIG_CRC_CCITT=m -# CONFIG_CRC16 is not set -CONFIG_CRC32=y -CONFIG_LIBCRC32C=m -CONFIG_ZLIB_INFLATE=y -CONFIG_ZLIB_DEFLATE=m -CONFIG_TEXTSEARCH=y -CONFIG_TEXTSEARCH_KMP=m -CONFIG_TEXTSEARCH_BM=m -CONFIG_TEXTSEARCH_FSM=m -- cgit v0.10.2 From 7d49697ef92bd2cf84ab53bd4cea82fefb197fb9 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 14:36:21 +1100 Subject: [PATCH] ppc64: More U3 device-tree fixes Some more U3 revisions have the missing "interrupts" property in U3, this adds them to the fixup code in prom_init.c Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index c758b66..0d91961 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -1872,7 +1872,7 @@ static void __init fixup_device_tree(void) if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev)) == PROM_ERROR) return; - if (u3_rev != 0x35 && u3_rev != 0x37) + if (u3_rev < 0x35 || u3_rev > 0x39) return; /* does it need fixup ? */ if (prom_getproplen(i2c, "interrupts") > 0) diff --git a/arch/ppc64/kernel/prom_init.c b/arch/ppc64/kernel/prom_init.c index e72b3f9..e4c880da 100644 --- a/arch/ppc64/kernel/prom_init.c +++ b/arch/ppc64/kernel/prom_init.c @@ -1824,7 +1824,7 @@ static void __init fixup_device_tree(void) if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev)) == PROM_ERROR) return; - if (u3_rev != 0x35 && u3_rev != 0x37) + if (u3_rev < 0x35 || u3_rev > 0x39) return; /* does it need fixup ? */ if (prom_getproplen(i2c, "interrupts") > 0) -- cgit v0.10.2 From 75722d3992f57375c0cc029dcceb2334a45ceff1 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 16:08:17 +1100 Subject: [PATCH] ppc64: Thermal control for SMU based machines This adds a new thermal control framework for PowerMac, along with the implementation for PowerMac8,1, PowerMac8,2 (iMac G5 rev 1 and 2), and PowerMac9,1 (latest single CPU desktop). In the future, I expect to move the older G5 thermal control to the new framework as well. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig index bc3e096..a0ea44c 100644 --- a/drivers/macintosh/Kconfig +++ b/drivers/macintosh/Kconfig @@ -169,6 +169,25 @@ config THERM_PM72 This driver provides thermostat and fan control for the desktop G5 machines. +config WINDFARM + tristate "New PowerMac thermal control infrastructure" + +config WINDFARM_PM81 + tristate "Support for thermal management on iMac G5" + depends on WINDFARM && I2C && CPU_FREQ_PMAC64 && PMAC_SMU + select I2C_PMAC_SMU + help + This driver provides thermal control for the iMacG5 + +config WINDFARM_PM91 + tristate "Support for thermal management on PowerMac9,1" + depends on WINDFARM && I2C && CPU_FREQ_PMAC64 && PMAC_SMU + select I2C_PMAC_SMU + help + This driver provides thermal control for the PowerMac9,1 + which is the recent (SMU based) single CPU desktop G5 + + config ANSLCD tristate "Support for ANS LCD display" depends on ADB_CUDA && PPC_PMAC diff --git a/drivers/macintosh/Makefile b/drivers/macintosh/Makefile index 236291b..f4657aa 100644 --- a/drivers/macintosh/Makefile +++ b/drivers/macintosh/Makefile @@ -26,3 +26,12 @@ obj-$(CONFIG_ADB_MACIO) += macio-adb.o obj-$(CONFIG_THERM_PM72) += therm_pm72.o obj-$(CONFIG_THERM_WINDTUNNEL) += therm_windtunnel.o obj-$(CONFIG_THERM_ADT746X) += therm_adt746x.o +obj-$(CONFIG_WINDFARM) += windfarm_core.o +obj-$(CONFIG_WINDFARM_PM81) += windfarm_smu_controls.o \ + windfarm_smu_sensors.o \ + windfarm_lm75_sensor.o windfarm_pid.o \ + windfarm_cpufreq_clamp.o windfarm_pm81.o +obj-$(CONFIG_WINDFARM_PM91) += windfarm_smu_controls.o \ + windfarm_smu_sensors.o \ + windfarm_lm75_sensor.o windfarm_pid.o \ + windfarm_cpufreq_clamp.o windfarm_pm91.o diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c index a83c4ac..e837827 100644 --- a/drivers/macintosh/smu.c +++ b/drivers/macintosh/smu.c @@ -590,6 +590,8 @@ static void smu_expose_childs(void *unused) sprintf(name, "smu-i2c-%02x", *reg); of_platform_device_create(np, name, &smu->of_dev->dev); } + if (device_is_compatible(np, "smu-sensors")) + of_platform_device_create(np, "smu-sensors", &smu->of_dev->dev); } } diff --git a/drivers/macintosh/windfarm.h b/drivers/macintosh/windfarm.h new file mode 100644 index 0000000..3f0cb03 --- /dev/null +++ b/drivers/macintosh/windfarm.h @@ -0,0 +1,131 @@ +/* + * Windfarm PowerMac thermal control. + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + */ + +#ifndef __WINDFARM_H__ +#define __WINDFARM_H__ + +#include +#include +#include +#include + +/* Display a 16.16 fixed point value */ +#define FIX32TOPRINT(f) ((f) >> 16),((((f) & 0xffff) * 1000) >> 16) + +/* + * Control objects + */ + +struct wf_control; + +struct wf_control_ops { + int (*set_value)(struct wf_control *ct, s32 val); + int (*get_value)(struct wf_control *ct, s32 *val); + s32 (*get_min)(struct wf_control *ct); + s32 (*get_max)(struct wf_control *ct); + void (*release)(struct wf_control *ct); + struct module *owner; +}; + +struct wf_control { + struct list_head link; + struct wf_control_ops *ops; + char *name; + int type; + struct kref ref; +}; + +#define WF_CONTROL_TYPE_GENERIC 0 +#define WF_CONTROL_RPM_FAN 1 +#define WF_CONTROL_PWM_FAN 2 + + +/* Note about lifetime rules: wf_register_control() will initialize + * the kref and wf_unregister_control will decrement it, thus the + * object creating/disposing a given control shouldn't assume it + * still exists after wf_unregister_control has been called. + * wf_find_control will inc the refcount for you + */ +extern int wf_register_control(struct wf_control *ct); +extern void wf_unregister_control(struct wf_control *ct); +extern struct wf_control * wf_find_control(const char *name); +extern int wf_get_control(struct wf_control *ct); +extern void wf_put_control(struct wf_control *ct); + +static inline int wf_control_set_max(struct wf_control *ct) +{ + s32 vmax = ct->ops->get_max(ct); + return ct->ops->set_value(ct, vmax); +} + +static inline int wf_control_set_min(struct wf_control *ct) +{ + s32 vmin = ct->ops->get_min(ct); + return ct->ops->set_value(ct, vmin); +} + +/* + * Sensor objects + */ + +struct wf_sensor; + +struct wf_sensor_ops { + int (*get_value)(struct wf_sensor *sr, s32 *val); + void (*release)(struct wf_sensor *sr); + struct module *owner; +}; + +struct wf_sensor { + struct list_head link; + struct wf_sensor_ops *ops; + char *name; + struct kref ref; +}; + +/* Same lifetime rules as controls */ +extern int wf_register_sensor(struct wf_sensor *sr); +extern void wf_unregister_sensor(struct wf_sensor *sr); +extern struct wf_sensor * wf_find_sensor(const char *name); +extern int wf_get_sensor(struct wf_sensor *sr); +extern void wf_put_sensor(struct wf_sensor *sr); + +/* For use by clients. Note that we are a bit racy here since + * notifier_block doesn't have a module owner field. I may fix + * it one day ... + * + * LOCKING NOTE ! + * + * All "events" except WF_EVENT_TICK are called with an internal mutex + * held which will deadlock if you call basically any core routine. + * So don't ! Just take note of the event and do your actual operations + * from the ticker. + * + */ +extern int wf_register_client(struct notifier_block *nb); +extern int wf_unregister_client(struct notifier_block *nb); + +/* Overtemp conditions. Those are refcounted */ +extern void wf_set_overtemp(void); +extern void wf_clear_overtemp(void); +extern int wf_is_overtemp(void); + +#define WF_EVENT_NEW_CONTROL 0 /* param is wf_control * */ +#define WF_EVENT_NEW_SENSOR 1 /* param is wf_sensor * */ +#define WF_EVENT_OVERTEMP 2 /* no param */ +#define WF_EVENT_NORMALTEMP 3 /* overtemp condition cleared */ +#define WF_EVENT_TICK 4 /* 1 second tick */ + +/* Note: If that driver gets more broad use, we could replace the + * simplistic overtemp bits with "environmental conditions". That + * could then be used to also notify of things like fan failure, + * case open, battery conditions, ... + */ + +#endif /* __WINDFARM_H__ */ diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c new file mode 100644 index 0000000..6c2a471 --- /dev/null +++ b/drivers/macintosh/windfarm_core.c @@ -0,0 +1,426 @@ +/* + * Windfarm PowerMac thermal control. Core + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + * + * This core code tracks the list of sensors & controls, register + * clients, and holds the kernel thread used for control. + * + * TODO: + * + * Add some information about sensor/control type and data format to + * sensors/controls, and have the sysfs attribute stuff be moved + * generically here instead of hard coded in the platform specific + * driver as it us currently + * + * This however requires solving some annoying lifetime issues with + * sysfs which doesn't seem to have lifetime rules for struct attribute, + * I may have to create full features kobjects for every sensor/control + * instead which is a bit of an overkill imho + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "windfarm.h" + +#define VERSION "0.2" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +static LIST_HEAD(wf_controls); +static LIST_HEAD(wf_sensors); +static DECLARE_MUTEX(wf_lock); +static struct notifier_block *wf_client_list; +static int wf_client_count; +static unsigned int wf_overtemp; +static unsigned int wf_overtemp_counter; +struct task_struct *wf_thread; + +/* + * Utilities & tick thread + */ + +static inline void wf_notify(int event, void *param) +{ + notifier_call_chain(&wf_client_list, event, param); +} + +int wf_critical_overtemp(void) +{ + static char * critical_overtemp_path = "/sbin/critical_overtemp"; + char *argv[] = { critical_overtemp_path, NULL }; + static char *envp[] = { "HOME=/", + "TERM=linux", + "PATH=/sbin:/usr/sbin:/bin:/usr/bin", + NULL }; + + return call_usermodehelper(critical_overtemp_path, argv, envp, 0); +} +EXPORT_SYMBOL_GPL(wf_critical_overtemp); + +static int wf_thread_func(void *data) +{ + unsigned long next, delay; + + next = jiffies; + + DBG("wf: thread started\n"); + + while(!kthread_should_stop()) { + try_to_freeze(); + + if (time_after_eq(jiffies, next)) { + wf_notify(WF_EVENT_TICK, NULL); + if (wf_overtemp) { + wf_overtemp_counter++; + /* 10 seconds overtemp, notify userland */ + if (wf_overtemp_counter > 10) + wf_critical_overtemp(); + /* 30 seconds, shutdown */ + if (wf_overtemp_counter > 30) { + printk(KERN_ERR "windfarm: Overtemp " + "for more than 30" + " seconds, shutting down\n"); + machine_power_off(); + } + } + next += HZ; + } + + delay = next - jiffies; + if (delay <= HZ) + schedule_timeout_interruptible(delay); + + /* there should be no signal, but oh well */ + if (signal_pending(current)) { + printk(KERN_WARNING "windfarm: thread got sigl !\n"); + break; + } + } + + DBG("wf: thread stopped\n"); + + return 0; +} + +static void wf_start_thread(void) +{ + wf_thread = kthread_run(wf_thread_func, NULL, "kwindfarm"); + if (IS_ERR(wf_thread)) { + printk(KERN_ERR "windfarm: failed to create thread,err %ld\n", + PTR_ERR(wf_thread)); + wf_thread = NULL; + } +} + + +static void wf_stop_thread(void) +{ + if (wf_thread) + kthread_stop(wf_thread); + wf_thread = NULL; +} + +/* + * Controls + */ + +static void wf_control_release(struct kref *kref) +{ + struct wf_control *ct = container_of(kref, struct wf_control, ref); + + DBG("wf: Deleting control %s\n", ct->name); + + if (ct->ops && ct->ops->release) + ct->ops->release(ct); + else + kfree(ct); +} + +int wf_register_control(struct wf_control *new_ct) +{ + struct wf_control *ct; + + down(&wf_lock); + list_for_each_entry(ct, &wf_controls, link) { + if (!strcmp(ct->name, new_ct->name)) { + printk(KERN_WARNING "windfarm: trying to register" + " duplicate control %s\n", ct->name); + up(&wf_lock); + return -EEXIST; + } + } + kref_init(&new_ct->ref); + list_add(&new_ct->link, &wf_controls); + + DBG("wf: Registered control %s\n", new_ct->name); + + wf_notify(WF_EVENT_NEW_CONTROL, new_ct); + up(&wf_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(wf_register_control); + +void wf_unregister_control(struct wf_control *ct) +{ + down(&wf_lock); + list_del(&ct->link); + up(&wf_lock); + + DBG("wf: Unregistered control %s\n", ct->name); + + kref_put(&ct->ref, wf_control_release); +} +EXPORT_SYMBOL_GPL(wf_unregister_control); + +struct wf_control * wf_find_control(const char *name) +{ + struct wf_control *ct; + + down(&wf_lock); + list_for_each_entry(ct, &wf_controls, link) { + if (!strcmp(ct->name, name)) { + if (wf_get_control(ct)) + ct = NULL; + up(&wf_lock); + return ct; + } + } + up(&wf_lock); + return NULL; +} +EXPORT_SYMBOL_GPL(wf_find_control); + +int wf_get_control(struct wf_control *ct) +{ + if (!try_module_get(ct->ops->owner)) + return -ENODEV; + kref_get(&ct->ref); + return 0; +} +EXPORT_SYMBOL_GPL(wf_get_control); + +void wf_put_control(struct wf_control *ct) +{ + struct module *mod = ct->ops->owner; + kref_put(&ct->ref, wf_control_release); + module_put(mod); +} +EXPORT_SYMBOL_GPL(wf_put_control); + + +/* + * Sensors + */ + + +static void wf_sensor_release(struct kref *kref) +{ + struct wf_sensor *sr = container_of(kref, struct wf_sensor, ref); + + DBG("wf: Deleting sensor %s\n", sr->name); + + if (sr->ops && sr->ops->release) + sr->ops->release(sr); + else + kfree(sr); +} + +int wf_register_sensor(struct wf_sensor *new_sr) +{ + struct wf_sensor *sr; + + down(&wf_lock); + list_for_each_entry(sr, &wf_sensors, link) { + if (!strcmp(sr->name, new_sr->name)) { + printk(KERN_WARNING "windfarm: trying to register" + " duplicate sensor %s\n", sr->name); + up(&wf_lock); + return -EEXIST; + } + } + kref_init(&new_sr->ref); + list_add(&new_sr->link, &wf_sensors); + + DBG("wf: Registered sensor %s\n", new_sr->name); + + wf_notify(WF_EVENT_NEW_SENSOR, new_sr); + up(&wf_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(wf_register_sensor); + +void wf_unregister_sensor(struct wf_sensor *sr) +{ + down(&wf_lock); + list_del(&sr->link); + up(&wf_lock); + + DBG("wf: Unregistered sensor %s\n", sr->name); + + wf_put_sensor(sr); +} +EXPORT_SYMBOL_GPL(wf_unregister_sensor); + +struct wf_sensor * wf_find_sensor(const char *name) +{ + struct wf_sensor *sr; + + down(&wf_lock); + list_for_each_entry(sr, &wf_sensors, link) { + if (!strcmp(sr->name, name)) { + if (wf_get_sensor(sr)) + sr = NULL; + up(&wf_lock); + return sr; + } + } + up(&wf_lock); + return NULL; +} +EXPORT_SYMBOL_GPL(wf_find_sensor); + +int wf_get_sensor(struct wf_sensor *sr) +{ + if (!try_module_get(sr->ops->owner)) + return -ENODEV; + kref_get(&sr->ref); + return 0; +} +EXPORT_SYMBOL_GPL(wf_get_sensor); + +void wf_put_sensor(struct wf_sensor *sr) +{ + struct module *mod = sr->ops->owner; + kref_put(&sr->ref, wf_sensor_release); + module_put(mod); +} +EXPORT_SYMBOL_GPL(wf_put_sensor); + + +/* + * Client & notification + */ + +int wf_register_client(struct notifier_block *nb) +{ + int rc; + struct wf_control *ct; + struct wf_sensor *sr; + + down(&wf_lock); + rc = notifier_chain_register(&wf_client_list, nb); + if (rc != 0) + goto bail; + wf_client_count++; + list_for_each_entry(ct, &wf_controls, link) + wf_notify(WF_EVENT_NEW_CONTROL, ct); + list_for_each_entry(sr, &wf_sensors, link) + wf_notify(WF_EVENT_NEW_SENSOR, sr); + if (wf_client_count == 1) + wf_start_thread(); + bail: + up(&wf_lock); + return rc; +} +EXPORT_SYMBOL_GPL(wf_register_client); + +int wf_unregister_client(struct notifier_block *nb) +{ + down(&wf_lock); + notifier_chain_unregister(&wf_client_list, nb); + wf_client_count++; + if (wf_client_count == 0) + wf_stop_thread(); + up(&wf_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(wf_unregister_client); + +void wf_set_overtemp(void) +{ + down(&wf_lock); + wf_overtemp++; + if (wf_overtemp == 1) { + printk(KERN_WARNING "windfarm: Overtemp condition detected !\n"); + wf_overtemp_counter = 0; + wf_notify(WF_EVENT_OVERTEMP, NULL); + } + up(&wf_lock); +} +EXPORT_SYMBOL_GPL(wf_set_overtemp); + +void wf_clear_overtemp(void) +{ + down(&wf_lock); + WARN_ON(wf_overtemp == 0); + if (wf_overtemp == 0) { + up(&wf_lock); + return; + } + wf_overtemp--; + if (wf_overtemp == 0) { + printk(KERN_WARNING "windfarm: Overtemp condition cleared !\n"); + wf_notify(WF_EVENT_NORMALTEMP, NULL); + } + up(&wf_lock); +} +EXPORT_SYMBOL_GPL(wf_clear_overtemp); + +int wf_is_overtemp(void) +{ + return (wf_overtemp != 0); +} +EXPORT_SYMBOL_GPL(wf_is_overtemp); + +static struct platform_device wf_platform_device = { + .name = "windfarm", +}; + +static int __init windfarm_core_init(void) +{ + DBG("wf: core loaded\n"); + + platform_device_register(&wf_platform_device); + return 0; +} + +static void __exit windfarm_core_exit(void) +{ + BUG_ON(wf_client_count != 0); + + DBG("wf: core unloaded\n"); + + platform_device_unregister(&wf_platform_device); +} + + +module_init(windfarm_core_init); +module_exit(windfarm_core_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt "); +MODULE_DESCRIPTION("Core component of PowerMac thermal control"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_cpufreq_clamp.c b/drivers/macintosh/windfarm_cpufreq_clamp.c new file mode 100644 index 0000000..607dbac --- /dev/null +++ b/drivers/macintosh/windfarm_cpufreq_clamp.c @@ -0,0 +1,105 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "windfarm.h" + +#define VERSION "0.3" + +static int clamped; +static struct wf_control *clamp_control; + +static int clamp_notifier_call(struct notifier_block *self, + unsigned long event, void *data) +{ + struct cpufreq_policy *p = data; + unsigned long max_freq; + + if (event != CPUFREQ_ADJUST) + return 0; + + max_freq = clamped ? (p->cpuinfo.min_freq) : (p->cpuinfo.max_freq); + cpufreq_verify_within_limits(p, 0, max_freq); + + return 0; +} + +static struct notifier_block clamp_notifier = { + .notifier_call = clamp_notifier_call, +}; + +static int clamp_set(struct wf_control *ct, s32 value) +{ + if (value) + printk(KERN_INFO "windfarm: Clamping CPU frequency to " + "minimum !\n"); + else + printk(KERN_INFO "windfarm: CPU frequency unclamped !\n"); + clamped = value; + cpufreq_update_policy(0); + return 0; +} + +static int clamp_get(struct wf_control *ct, s32 *value) +{ + *value = clamped; + return 0; +} + +static s32 clamp_min(struct wf_control *ct) +{ + return 0; +} + +static s32 clamp_max(struct wf_control *ct) +{ + return 1; +} + +static struct wf_control_ops clamp_ops = { + .set_value = clamp_set, + .get_value = clamp_get, + .get_min = clamp_min, + .get_max = clamp_max, + .owner = THIS_MODULE, +}; + +static int __init wf_cpufreq_clamp_init(void) +{ + struct wf_control *clamp; + + clamp = kmalloc(sizeof(struct wf_control), GFP_KERNEL); + if (clamp == NULL) + return -ENOMEM; + cpufreq_register_notifier(&clamp_notifier, CPUFREQ_POLICY_NOTIFIER); + clamp->ops = &clamp_ops; + clamp->name = "cpufreq-clamp"; + if (wf_register_control(clamp)) + goto fail; + clamp_control = clamp; + return 0; + fail: + kfree(clamp); + return -ENODEV; +} + +static void __exit wf_cpufreq_clamp_exit(void) +{ + if (clamp_control) + wf_unregister_control(clamp_control); +} + + +module_init(wf_cpufreq_clamp_init); +module_exit(wf_cpufreq_clamp_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt "); +MODULE_DESCRIPTION("CPU frequency clamp for PowerMacs thermal control"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_lm75_sensor.c b/drivers/macintosh/windfarm_lm75_sensor.c new file mode 100644 index 0000000..a0a41ad --- /dev/null +++ b/drivers/macintosh/windfarm_lm75_sensor.c @@ -0,0 +1,263 @@ +/* + * Windfarm PowerMac thermal control. LM75 sensor + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "windfarm.h" + +#define VERSION "0.1" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +struct wf_lm75_sensor { + int ds1775 : 1; + int inited : 1; + struct i2c_client i2c; + struct wf_sensor sens; +}; +#define wf_to_lm75(c) container_of(c, struct wf_lm75_sensor, sens) +#define i2c_to_lm75(c) container_of(c, struct wf_lm75_sensor, i2c) + +static int wf_lm75_attach(struct i2c_adapter *adapter); +static int wf_lm75_detach(struct i2c_client *client); + +static struct i2c_driver wf_lm75_driver = { + .owner = THIS_MODULE, + .name = "wf_lm75", + .flags = I2C_DF_NOTIFY, + .attach_adapter = wf_lm75_attach, + .detach_client = wf_lm75_detach, +}; + +static int wf_lm75_get(struct wf_sensor *sr, s32 *value) +{ + struct wf_lm75_sensor *lm = wf_to_lm75(sr); + s32 data; + + if (lm->i2c.adapter == NULL) + return -ENODEV; + + /* Init chip if necessary */ + if (!lm->inited) { + u8 cfg_new, cfg = (u8)i2c_smbus_read_byte_data(&lm->i2c, 1); + + DBG("wf_lm75: Initializing %s, cfg was: %02x\n", + sr->name, cfg); + + /* clear shutdown bit, keep other settings as left by + * the firmware for now + */ + cfg_new = cfg & ~0x01; + i2c_smbus_write_byte_data(&lm->i2c, 1, cfg_new); + lm->inited = 1; + + /* If we just powered it up, let's wait 200 ms */ + msleep(200); + } + + /* Read temperature register */ + data = (s32)le16_to_cpu(i2c_smbus_read_word_data(&lm->i2c, 0)); + data <<= 8; + *value = data; + + return 0; +} + +static void wf_lm75_release(struct wf_sensor *sr) +{ + struct wf_lm75_sensor *lm = wf_to_lm75(sr); + + /* check if client is registered and detach from i2c */ + if (lm->i2c.adapter) { + i2c_detach_client(&lm->i2c); + lm->i2c.adapter = NULL; + } + + kfree(lm); +} + +static struct wf_sensor_ops wf_lm75_ops = { + .get_value = wf_lm75_get, + .release = wf_lm75_release, + .owner = THIS_MODULE, +}; + +static struct wf_lm75_sensor *wf_lm75_create(struct i2c_adapter *adapter, + u8 addr, int ds1775, + const char *loc) +{ + struct wf_lm75_sensor *lm; + + DBG("wf_lm75: creating %s device at address 0x%02x\n", + ds1775 ? "ds1775" : "lm75", addr); + + lm = kmalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL); + if (lm == NULL) + return NULL; + memset(lm, 0, sizeof(struct wf_lm75_sensor)); + + /* Usual rant about sensor names not beeing very consistent in + * the device-tree, oh well ... + * Add more entries below as you deal with more setups + */ + if (!strcmp(loc, "Hard drive") || !strcmp(loc, "DRIVE BAY")) + lm->sens.name = "hd-temp"; + else + goto fail; + + lm->inited = 0; + lm->sens.ops = &wf_lm75_ops; + lm->ds1775 = ds1775; + lm->i2c.addr = (addr >> 1) & 0x7f; + lm->i2c.adapter = adapter; + lm->i2c.driver = &wf_lm75_driver; + strncpy(lm->i2c.name, lm->sens.name, I2C_NAME_SIZE-1); + + if (i2c_attach_client(&lm->i2c)) { + printk(KERN_ERR "windfarm: failed to attach %s %s to i2c\n", + ds1775 ? "ds1775" : "lm75", lm->i2c.name); + goto fail; + } + + if (wf_register_sensor(&lm->sens)) { + i2c_detach_client(&lm->i2c); + goto fail; + } + + return lm; + fail: + kfree(lm); + return NULL; +} + +static int wf_lm75_attach(struct i2c_adapter *adapter) +{ + u8 bus_id; + struct device_node *smu, *bus, *dev; + + /* We currently only deal with LM75's hanging off the SMU + * i2c busses. If we extend that driver to other/older + * machines, we should split this function into SMU-i2c, + * keywest-i2c, PMU-i2c, ... + */ + + DBG("wf_lm75: adapter %s detected\n", adapter->name); + + if (strncmp(adapter->name, "smu-i2c-", 8) != 0) + return 0; + smu = of_find_node_by_type(NULL, "smu"); + if (smu == NULL) + return 0; + + /* Look for the bus in the device-tree */ + bus_id = (u8)simple_strtoul(adapter->name + 8, NULL, 16); + + DBG("wf_lm75: bus ID is %x\n", bus_id); + + /* Look for sensors subdir */ + for (bus = NULL; + (bus = of_get_next_child(smu, bus)) != NULL;) { + u32 *reg; + + if (strcmp(bus->name, "i2c")) + continue; + reg = (u32 *)get_property(bus, "reg", NULL); + if (reg == NULL) + continue; + if (bus_id == *reg) + break; + } + of_node_put(smu); + if (bus == NULL) { + printk(KERN_WARNING "windfarm: SMU i2c bus 0x%x not found" + " in device-tree !\n", bus_id); + return 0; + } + + DBG("wf_lm75: bus found, looking for device...\n"); + + /* Now look for lm75(s) in there */ + for (dev = NULL; + (dev = of_get_next_child(bus, dev)) != NULL;) { + const char *loc = + get_property(dev, "hwsensor-location", NULL); + u32 *reg = (u32 *)get_property(dev, "reg", NULL); + DBG(" dev: %s... (loc: %p, reg: %p)\n", dev->name, loc, reg); + if (loc == NULL || reg == NULL) + continue; + /* real lm75 */ + if (device_is_compatible(dev, "lm75")) + wf_lm75_create(adapter, *reg, 0, loc); + /* ds1775 (compatible, better resolution */ + else if (device_is_compatible(dev, "ds1775")) + wf_lm75_create(adapter, *reg, 1, loc); + } + + of_node_put(bus); + + return 0; +} + +static int wf_lm75_detach(struct i2c_client *client) +{ + struct wf_lm75_sensor *lm = i2c_to_lm75(client); + + DBG("wf_lm75: i2c detatch called for %s\n", lm->sens.name); + + /* Mark client detached */ + lm->i2c.adapter = NULL; + + /* release sensor */ + wf_unregister_sensor(&lm->sens); + + return 0; +} + +static int __init wf_lm75_sensor_init(void) +{ + int rc; + + rc = i2c_add_driver(&wf_lm75_driver); + if (rc < 0) + return rc; + return 0; +} + +static void __exit wf_lm75_sensor_exit(void) +{ + i2c_del_driver(&wf_lm75_driver); +} + + +module_init(wf_lm75_sensor_init); +module_exit(wf_lm75_sensor_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt "); +MODULE_DESCRIPTION("LM75 sensor objects for PowerMacs thermal control"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_pid.c b/drivers/macintosh/windfarm_pid.c new file mode 100644 index 0000000..2e803b3 --- /dev/null +++ b/drivers/macintosh/windfarm_pid.c @@ -0,0 +1,145 @@ +/* + * Windfarm PowerMac thermal control. Generic PID helpers + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + */ + +#include +#include +#include +#include +#include + +#include "windfarm_pid.h" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +void wf_pid_init(struct wf_pid_state *st, struct wf_pid_param *param) +{ + memset(st, 0, sizeof(struct wf_pid_state)); + st->param = *param; + st->first = 1; +} +EXPORT_SYMBOL_GPL(wf_pid_init); + +s32 wf_pid_run(struct wf_pid_state *st, s32 new_sample) +{ + s64 error, integ, deriv; + s32 target; + int i, hlen = st->param.history_len; + + /* Calculate error term */ + error = new_sample - st->param.itarget; + + /* Get samples into our history buffer */ + if (st->first) { + for (i = 0; i < hlen; i++) { + st->samples[i] = new_sample; + st->errors[i] = error; + } + st->first = 0; + st->index = 0; + } else { + st->index = (st->index + 1) % hlen; + st->samples[st->index] = new_sample; + st->errors[st->index] = error; + } + + /* Calculate integral term */ + for (i = 0, integ = 0; i < hlen; i++) + integ += st->errors[(st->index + hlen - i) % hlen]; + integ *= st->param.interval; + + /* Calculate derivative term */ + deriv = st->errors[st->index] - + st->errors[(st->index + hlen - 1) % hlen]; + deriv /= st->param.interval; + + /* Calculate target */ + target = (s32)((integ * (s64)st->param.gr + deriv * (s64)st->param.gd + + error * (s64)st->param.gp) >> 36); + if (st->param.additive) + target += st->target; + target = max(target, st->param.min); + target = min(target, st->param.max); + st->target = target; + + return st->target; +} +EXPORT_SYMBOL_GPL(wf_pid_run); + +void wf_cpu_pid_init(struct wf_cpu_pid_state *st, + struct wf_cpu_pid_param *param) +{ + memset(st, 0, sizeof(struct wf_cpu_pid_state)); + st->param = *param; + st->first = 1; +} +EXPORT_SYMBOL_GPL(wf_cpu_pid_init); + +s32 wf_cpu_pid_run(struct wf_cpu_pid_state *st, s32 new_power, s32 new_temp) +{ + s64 error, integ, deriv, prop; + s32 target, sval, adj; + int i, hlen = st->param.history_len; + + /* Calculate error term */ + error = st->param.pmaxadj - new_power; + + /* Get samples into our history buffer */ + if (st->first) { + for (i = 0; i < hlen; i++) { + st->powers[i] = new_power; + st->errors[i] = error; + } + st->temps[0] = st->temps[1] = new_temp; + st->first = 0; + st->index = st->tindex = 0; + } else { + st->index = (st->index + 1) % hlen; + st->powers[st->index] = new_power; + st->errors[st->index] = error; + st->tindex = (st->tindex + 1) % 2; + st->temps[st->tindex] = new_temp; + } + + /* Calculate integral term */ + for (i = 0, integ = 0; i < hlen; i++) + integ += st->errors[(st->index + hlen - i) % hlen]; + integ *= st->param.interval; + integ *= st->param.gr; + sval = st->param.tmax - ((integ >> 20) & 0xffffffff); + adj = min(st->param.ttarget, sval); + + DBG("integ: %lx, sval: %lx, adj: %lx\n", integ, sval, adj); + + /* Calculate derivative term */ + deriv = st->temps[st->tindex] - + st->temps[(st->tindex + 2 - 1) % 2]; + deriv /= st->param.interval; + deriv *= st->param.gd; + + /* Calculate proportional term */ + prop = (new_temp - adj); + prop *= st->param.gp; + + DBG("deriv: %lx, prop: %lx\n", deriv, prop); + + /* Calculate target */ + target = st->target + (s32)((deriv + prop) >> 36); + target = max(target, st->param.min); + target = min(target, st->param.max); + st->target = target; + + return st->target; +} +EXPORT_SYMBOL_GPL(wf_cpu_pid_run); diff --git a/drivers/macintosh/windfarm_pid.h b/drivers/macintosh/windfarm_pid.h new file mode 100644 index 0000000..a364c2a --- /dev/null +++ b/drivers/macintosh/windfarm_pid.h @@ -0,0 +1,84 @@ +/* + * Windfarm PowerMac thermal control. Generic PID helpers + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + * + * This is a pair of generic PID helpers that can be used by + * control loops. One is the basic PID implementation, the + * other one is more specifically tailored to the loops used + * for CPU control with 2 input sample types (temp and power) + */ + +/* + * *** Simple PID *** + */ + +#define WF_PID_MAX_HISTORY 32 + +/* This parameter array is passed to the PID algorithm. Currently, + * we don't support changing parameters on the fly as it's not needed + * but could be implemented (with necessary adjustment of the history + * buffer + */ +struct wf_pid_param { + int interval; /* Interval between samples in seconds */ + int history_len; /* Size of history buffer */ + int additive; /* 1: target relative to previous value */ + s32 gd, gp, gr; /* PID gains */ + s32 itarget; /* PID input target */ + s32 min,max; /* min and max target values */ +}; + +struct wf_pid_state { + int first; /* first run of the loop */ + int index; /* index of current sample */ + s32 target; /* current target value */ + s32 samples[WF_PID_MAX_HISTORY]; /* samples history buffer */ + s32 errors[WF_PID_MAX_HISTORY]; /* error history buffer */ + + struct wf_pid_param param; +}; + +extern void wf_pid_init(struct wf_pid_state *st, struct wf_pid_param *param); +extern s32 wf_pid_run(struct wf_pid_state *st, s32 sample); + + +/* + * *** CPU PID *** + */ + +#define WF_CPU_PID_MAX_HISTORY 32 + +/* This parameter array is passed to the CPU PID algorithm. Currently, + * we don't support changing parameters on the fly as it's not needed + * but could be implemented (with necessary adjustment of the history + * buffer + */ +struct wf_cpu_pid_param { + int interval; /* Interval between samples in seconds */ + int history_len; /* Size of history buffer */ + s32 gd, gp, gr; /* PID gains */ + s32 pmaxadj; /* PID max power adjust */ + s32 ttarget; /* PID input target */ + s32 tmax; /* PID input max */ + s32 min,max; /* min and max target values */ +}; + +struct wf_cpu_pid_state { + int first; /* first run of the loop */ + int index; /* index of current power */ + int tindex; /* index of current temp */ + s32 target; /* current target value */ + s32 powers[WF_PID_MAX_HISTORY]; /* power history buffer */ + s32 errors[WF_PID_MAX_HISTORY]; /* error history buffer */ + s32 temps[2]; /* temp. history buffer */ + + struct wf_cpu_pid_param param; +}; + +extern void wf_cpu_pid_init(struct wf_cpu_pid_state *st, + struct wf_cpu_pid_param *param); +extern s32 wf_cpu_pid_run(struct wf_cpu_pid_state *st, s32 power, s32 temp); diff --git a/drivers/macintosh/windfarm_pm81.c b/drivers/macintosh/windfarm_pm81.c new file mode 100644 index 0000000..322c74b2 --- /dev/null +++ b/drivers/macintosh/windfarm_pm81.c @@ -0,0 +1,879 @@ +/* + * Windfarm PowerMac thermal control. iMac G5 + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + * + * The algorithm used is the PID control algorithm, used the same + * way the published Darwin code does, using the same values that + * are present in the Darwin 8.2 snapshot property lists (note however + * that none of the code has been re-used, it's a complete re-implementation + * + * The various control loops found in Darwin config file are: + * + * PowerMac8,1 and PowerMac8,2 + * =========================== + * + * System Fans control loop. Different based on models. In addition to the + * usual PID algorithm, the control loop gets 2 additional pairs of linear + * scaling factors (scale/offsets) expressed as 4.12 fixed point values + * signed offset, unsigned scale) + * + * The targets are modified such as: + * - the linked control (second control) gets the target value as-is + * (typically the drive fan) + * - the main control (first control) gets the target value scaled with + * the first pair of factors, and is then modified as below + * - the value of the target of the CPU Fan control loop is retreived, + * scaled with the second pair of factors, and the max of that and + * the scaled target is applied to the main control. + * + * # model_id: 2 + * controls : system-fan, drive-bay-fan + * sensors : hd-temp + * PID params : G_d = 0x15400000 + * G_p = 0x00200000 + * G_r = 0x000002fd + * History = 2 entries + * Input target = 0x3a0000 + * Interval = 5s + * linear-factors : offset = 0xff38 scale = 0x0ccd + * offset = 0x0208 scale = 0x07ae + * + * # model_id: 3 + * controls : system-fan, drive-bay-fan + * sensors : hd-temp + * PID params : G_d = 0x08e00000 + * G_p = 0x00566666 + * G_r = 0x0000072b + * History = 2 entries + * Input target = 0x350000 + * Interval = 5s + * linear-factors : offset = 0xff38 scale = 0x0ccd + * offset = 0x0000 scale = 0x0000 + * + * # model_id: 5 + * controls : system-fan + * sensors : hd-temp + * PID params : G_d = 0x15400000 + * G_p = 0x00233333 + * G_r = 0x000002fd + * History = 2 entries + * Input target = 0x3a0000 + * Interval = 5s + * linear-factors : offset = 0x0000 scale = 0x1000 + * offset = 0x0091 scale = 0x0bae + * + * CPU Fan control loop. The loop is identical for all models. it + * has an additional pair of scaling factor. This is used to scale the + * systems fan control loop target result (the one before it gets scaled + * by the System Fans control loop itself). Then, the max value of the + * calculated target value and system fan value is sent to the fans + * + * controls : cpu-fan + * sensors : cpu-temp cpu-power + * PID params : From SMU sdb partition + * linear-factors : offset = 0xfb50 scale = 0x1000 + * + * CPU Slew control loop. Not implemented. The cpufreq driver in linux is + * completely separate for now, though we could find a way to link it, either + * as a client reacting to overtemp notifications, or directling monitoring + * the CPU temperature + * + * WARNING ! The CPU control loop requires the CPU tmax for the current + * operating point. However, we currently are completely separated from + * the cpufreq driver and thus do not know what the current operating + * point is. Fortunately, we also do not have any hardware supporting anything + * but operating point 0 at the moment, thus we just peek that value directly + * from the SDB partition. If we ever end up with actually slewing the system + * clock and thus changing operating points, we'll have to find a way to + * communicate with the CPU freq driver; + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "windfarm.h" +#include "windfarm_pid.h" + +#define VERSION "0.4" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +/* define this to force CPU overtemp to 74 degree, useful for testing + * the overtemp code + */ +#undef HACKED_OVERTEMP + +static int wf_smu_mach_model; /* machine model id */ + +static struct device *wf_smu_dev; + +/* Controls & sensors */ +static struct wf_sensor *sensor_cpu_power; +static struct wf_sensor *sensor_cpu_temp; +static struct wf_sensor *sensor_hd_temp; +static struct wf_control *fan_cpu_main; +static struct wf_control *fan_hd; +static struct wf_control *fan_system; +static struct wf_control *cpufreq_clamp; + +/* Set to kick the control loop into life */ +static int wf_smu_all_controls_ok, wf_smu_all_sensors_ok, wf_smu_started; + +/* Failure handling.. could be nicer */ +#define FAILURE_FAN 0x01 +#define FAILURE_SENSOR 0x02 +#define FAILURE_OVERTEMP 0x04 + +static unsigned int wf_smu_failure_state; +static int wf_smu_readjust, wf_smu_skipping; + +/* + * ****** System Fans Control Loop ****** + * + */ + +/* Parameters for the System Fans control loop. Parameters + * not in this table such as interval, history size, ... + * are common to all versions and thus hard coded for now. + */ +struct wf_smu_sys_fans_param { + int model_id; + s32 itarget; + s32 gd, gp, gr; + + s16 offset0; + u16 scale0; + s16 offset1; + u16 scale1; +}; + +#define WF_SMU_SYS_FANS_INTERVAL 5 +#define WF_SMU_SYS_FANS_HISTORY_SIZE 2 + +/* State data used by the system fans control loop + */ +struct wf_smu_sys_fans_state { + int ticks; + s32 sys_setpoint; + s32 hd_setpoint; + s16 offset0; + u16 scale0; + s16 offset1; + u16 scale1; + struct wf_pid_state pid; +}; + +/* + * Configs for SMU Sytem Fan control loop + */ +static struct wf_smu_sys_fans_param wf_smu_sys_all_params[] = { + /* Model ID 2 */ + { + .model_id = 2, + .itarget = 0x3a0000, + .gd = 0x15400000, + .gp = 0x00200000, + .gr = 0x000002fd, + .offset0 = 0xff38, + .scale0 = 0x0ccd, + .offset1 = 0x0208, + .scale1 = 0x07ae, + }, + /* Model ID 3 */ + { + .model_id = 2, + .itarget = 0x350000, + .gd = 0x08e00000, + .gp = 0x00566666, + .gr = 0x0000072b, + .offset0 = 0xff38, + .scale0 = 0x0ccd, + .offset1 = 0x0000, + .scale1 = 0x0000, + }, + /* Model ID 5 */ + { + .model_id = 2, + .itarget = 0x3a0000, + .gd = 0x15400000, + .gp = 0x00233333, + .gr = 0x000002fd, + .offset0 = 0x0000, + .scale0 = 0x1000, + .offset1 = 0x0091, + .scale1 = 0x0bae, + }, +}; +#define WF_SMU_SYS_FANS_NUM_CONFIGS ARRAY_SIZE(wf_smu_sys_all_params) + +static struct wf_smu_sys_fans_state *wf_smu_sys_fans; + +/* + * ****** CPU Fans Control Loop ****** + * + */ + + +#define WF_SMU_CPU_FANS_INTERVAL 1 +#define WF_SMU_CPU_FANS_MAX_HISTORY 16 +#define WF_SMU_CPU_FANS_SIBLING_SCALE 0x00001000 +#define WF_SMU_CPU_FANS_SIBLING_OFFSET 0xfffffb50 + +/* State data used by the cpu fans control loop + */ +struct wf_smu_cpu_fans_state { + int ticks; + s32 cpu_setpoint; + s32 scale; + s32 offset; + struct wf_cpu_pid_state pid; +}; + +static struct wf_smu_cpu_fans_state *wf_smu_cpu_fans; + + + +/* + * ***** Implementation ***** + * + */ + +static void wf_smu_create_sys_fans(void) +{ + struct wf_smu_sys_fans_param *param = NULL; + struct wf_pid_param pid_param; + int i; + + /* First, locate the params for this model */ + for (i = 0; i < WF_SMU_SYS_FANS_NUM_CONFIGS; i++) + if (wf_smu_sys_all_params[i].model_id == wf_smu_mach_model) { + param = &wf_smu_sys_all_params[i]; + break; + } + + /* No params found, put fans to max */ + if (param == NULL) { + printk(KERN_WARNING "windfarm: System fan config not found " + "for this machine model, max fan speed\n"); + goto fail; + } + + /* Alloc & initialize state */ + wf_smu_sys_fans = kmalloc(sizeof(struct wf_smu_sys_fans_state), + GFP_KERNEL); + if (wf_smu_sys_fans == NULL) { + printk(KERN_WARNING "windfarm: Memory allocation error" + " max fan speed\n"); + goto fail; + } + wf_smu_sys_fans->ticks = 1; + wf_smu_sys_fans->scale0 = param->scale0; + wf_smu_sys_fans->offset0 = param->offset0; + wf_smu_sys_fans->scale1 = param->scale1; + wf_smu_sys_fans->offset1 = param->offset1; + + /* Fill PID params */ + pid_param.gd = param->gd; + pid_param.gp = param->gp; + pid_param.gr = param->gr; + pid_param.interval = WF_SMU_SYS_FANS_INTERVAL; + pid_param.history_len = WF_SMU_SYS_FANS_HISTORY_SIZE; + pid_param.itarget = param->itarget; + pid_param.min = fan_system->ops->get_min(fan_system); + pid_param.max = fan_system->ops->get_max(fan_system); + if (fan_hd) { + pid_param.min = + max(pid_param.min,fan_hd->ops->get_min(fan_hd)); + pid_param.max = + min(pid_param.max,fan_hd->ops->get_max(fan_hd)); + } + wf_pid_init(&wf_smu_sys_fans->pid, &pid_param); + + DBG("wf: System Fan control initialized.\n"); + DBG(" itarged=%d.%03d, min=%d RPM, max=%d RPM\n", + FIX32TOPRINT(pid_param.itarget), pid_param.min, pid_param.max); + return; + + fail: + + if (fan_system) + wf_control_set_max(fan_system); + if (fan_hd) + wf_control_set_max(fan_hd); +} + +static void wf_smu_sys_fans_tick(struct wf_smu_sys_fans_state *st) +{ + s32 new_setpoint, temp, scaled, cputarget; + int rc; + + if (--st->ticks != 0) { + if (wf_smu_readjust) + goto readjust; + return; + } + st->ticks = WF_SMU_SYS_FANS_INTERVAL; + + rc = sensor_hd_temp->ops->get_value(sensor_hd_temp, &temp); + if (rc) { + printk(KERN_WARNING "windfarm: HD temp sensor error %d\n", + rc); + wf_smu_failure_state |= FAILURE_SENSOR; + return; + } + + DBG("wf_smu: System Fans tick ! HD temp: %d.%03d\n", + FIX32TOPRINT(temp)); + + if (temp > (st->pid.param.itarget + 0x50000)) + wf_smu_failure_state |= FAILURE_OVERTEMP; + + new_setpoint = wf_pid_run(&st->pid, temp); + + DBG("wf_smu: new_setpoint: %d RPM\n", (int)new_setpoint); + + scaled = ((((s64)new_setpoint) * (s64)st->scale0) >> 12) + st->offset0; + + DBG("wf_smu: scaled setpoint: %d RPM\n", (int)scaled); + + cputarget = wf_smu_cpu_fans ? wf_smu_cpu_fans->pid.target : 0; + cputarget = ((((s64)cputarget) * (s64)st->scale1) >> 12) + st->offset1; + scaled = max(scaled, cputarget); + scaled = max(scaled, st->pid.param.min); + scaled = min(scaled, st->pid.param.max); + + DBG("wf_smu: adjusted setpoint: %d RPM\n", (int)scaled); + + if (st->sys_setpoint == scaled && new_setpoint == st->hd_setpoint) + return; + st->sys_setpoint = scaled; + st->hd_setpoint = new_setpoint; + readjust: + if (fan_system && wf_smu_failure_state == 0) { + rc = fan_system->ops->set_value(fan_system, st->sys_setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: Sys fan error %d\n", + rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } + if (fan_hd && wf_smu_failure_state == 0) { + rc = fan_hd->ops->set_value(fan_hd, st->hd_setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: HD fan error %d\n", + rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } +} + +static void wf_smu_create_cpu_fans(void) +{ + struct wf_cpu_pid_param pid_param; + struct smu_sdbp_header *hdr; + struct smu_sdbp_cpupiddata *piddata; + struct smu_sdbp_fvt *fvt; + s32 tmax, tdelta, maxpow, powadj; + + /* First, locate the PID params in SMU SBD */ + hdr = smu_get_sdb_partition(SMU_SDB_CPUPIDDATA_ID, NULL); + if (hdr == 0) { + printk(KERN_WARNING "windfarm: CPU PID fan config not found " + "max fan speed\n"); + goto fail; + } + piddata = (struct smu_sdbp_cpupiddata *)&hdr[1]; + + /* Get the FVT params for operating point 0 (the only supported one + * for now) in order to get tmax + */ + hdr = smu_get_sdb_partition(SMU_SDB_FVT_ID, NULL); + if (hdr) { + fvt = (struct smu_sdbp_fvt *)&hdr[1]; + tmax = ((s32)fvt->maxtemp) << 16; + } else + tmax = 0x5e0000; /* 94 degree default */ + + /* Alloc & initialize state */ + wf_smu_cpu_fans = kmalloc(sizeof(struct wf_smu_cpu_fans_state), + GFP_KERNEL); + if (wf_smu_cpu_fans == NULL) + goto fail; + wf_smu_cpu_fans->ticks = 1; + + wf_smu_cpu_fans->scale = WF_SMU_CPU_FANS_SIBLING_SCALE; + wf_smu_cpu_fans->offset = WF_SMU_CPU_FANS_SIBLING_OFFSET; + + /* Fill PID params */ + pid_param.interval = WF_SMU_CPU_FANS_INTERVAL; + pid_param.history_len = piddata->history_len; + if (pid_param.history_len > WF_CPU_PID_MAX_HISTORY) { + printk(KERN_WARNING "windfarm: History size overflow on " + "CPU control loop (%d)\n", piddata->history_len); + pid_param.history_len = WF_CPU_PID_MAX_HISTORY; + } + pid_param.gd = piddata->gd; + pid_param.gp = piddata->gp; + pid_param.gr = piddata->gr / pid_param.history_len; + + tdelta = ((s32)piddata->target_temp_delta) << 16; + maxpow = ((s32)piddata->max_power) << 16; + powadj = ((s32)piddata->power_adj) << 16; + + pid_param.tmax = tmax; + pid_param.ttarget = tmax - tdelta; + pid_param.pmaxadj = maxpow - powadj; + + pid_param.min = fan_cpu_main->ops->get_min(fan_cpu_main); + pid_param.max = fan_cpu_main->ops->get_max(fan_cpu_main); + + wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param); + + DBG("wf: CPU Fan control initialized.\n"); + DBG(" ttarged=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM\n", + FIX32TOPRINT(pid_param.ttarget), FIX32TOPRINT(pid_param.tmax), + pid_param.min, pid_param.max); + + return; + + fail: + printk(KERN_WARNING "windfarm: CPU fan config not found\n" + "for this machine model, max fan speed\n"); + + if (cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + if (fan_cpu_main) + wf_control_set_max(fan_cpu_main); +} + +static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) +{ + s32 new_setpoint, temp, power, systarget; + int rc; + + if (--st->ticks != 0) { + if (wf_smu_readjust) + goto readjust; + return; + } + st->ticks = WF_SMU_CPU_FANS_INTERVAL; + + rc = sensor_cpu_temp->ops->get_value(sensor_cpu_temp, &temp); + if (rc) { + printk(KERN_WARNING "windfarm: CPU temp sensor error %d\n", + rc); + wf_smu_failure_state |= FAILURE_SENSOR; + return; + } + + rc = sensor_cpu_power->ops->get_value(sensor_cpu_power, &power); + if (rc) { + printk(KERN_WARNING "windfarm: CPU power sensor error %d\n", + rc); + wf_smu_failure_state |= FAILURE_SENSOR; + return; + } + + DBG("wf_smu: CPU Fans tick ! CPU temp: %d.%03d, power: %d.%03d\n", + FIX32TOPRINT(temp), FIX32TOPRINT(power)); + +#ifdef HACKED_OVERTEMP + if (temp > 0x4a0000) + wf_smu_failure_state |= FAILURE_OVERTEMP; +#else + if (temp > st->pid.param.tmax) + wf_smu_failure_state |= FAILURE_OVERTEMP; +#endif + new_setpoint = wf_cpu_pid_run(&st->pid, power, temp); + + DBG("wf_smu: new_setpoint: %d RPM\n", (int)new_setpoint); + + systarget = wf_smu_sys_fans ? wf_smu_sys_fans->pid.target : 0; + systarget = ((((s64)systarget) * (s64)st->scale) >> 12) + + st->offset; + new_setpoint = max(new_setpoint, systarget); + new_setpoint = max(new_setpoint, st->pid.param.min); + new_setpoint = min(new_setpoint, st->pid.param.max); + + DBG("wf_smu: adjusted setpoint: %d RPM\n", (int)new_setpoint); + + if (st->cpu_setpoint == new_setpoint) + return; + st->cpu_setpoint = new_setpoint; + readjust: + if (fan_cpu_main && wf_smu_failure_state == 0) { + rc = fan_cpu_main->ops->set_value(fan_cpu_main, + st->cpu_setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: CPU main fan" + " error %d\n", rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } +} + + +/* + * ****** Attributes ****** + * + */ + +#define BUILD_SHOW_FUNC_FIX(name, data) \ +static ssize_t show_##name(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + ssize_t r; \ + s32 val = 0; \ + data->ops->get_value(data, &val); \ + r = sprintf(buf, "%d.%03d", FIX32TOPRINT(val)); \ + return r; \ +} \ +static DEVICE_ATTR(name,S_IRUGO,show_##name, NULL); + + +#define BUILD_SHOW_FUNC_INT(name, data) \ +static ssize_t show_##name(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + s32 val = 0; \ + data->ops->get_value(data, &val); \ + return sprintf(buf, "%d", val); \ +} \ +static DEVICE_ATTR(name,S_IRUGO,show_##name, NULL); + +BUILD_SHOW_FUNC_INT(cpu_fan, fan_cpu_main); +BUILD_SHOW_FUNC_INT(sys_fan, fan_system); +BUILD_SHOW_FUNC_INT(hd_fan, fan_hd); + +BUILD_SHOW_FUNC_FIX(cpu_temp, sensor_cpu_temp); +BUILD_SHOW_FUNC_FIX(cpu_power, sensor_cpu_power); +BUILD_SHOW_FUNC_FIX(hd_temp, sensor_hd_temp); + +/* + * ****** Setup / Init / Misc ... ****** + * + */ + +static void wf_smu_tick(void) +{ + unsigned int last_failure = wf_smu_failure_state; + unsigned int new_failure; + + if (!wf_smu_started) { + DBG("wf: creating control loops !\n"); + wf_smu_create_sys_fans(); + wf_smu_create_cpu_fans(); + wf_smu_started = 1; + } + + /* Skipping ticks */ + if (wf_smu_skipping && --wf_smu_skipping) + return; + + wf_smu_failure_state = 0; + if (wf_smu_sys_fans) + wf_smu_sys_fans_tick(wf_smu_sys_fans); + if (wf_smu_cpu_fans) + wf_smu_cpu_fans_tick(wf_smu_cpu_fans); + + wf_smu_readjust = 0; + new_failure = wf_smu_failure_state & ~last_failure; + + /* If entering failure mode, clamp cpufreq and ramp all + * fans to full speed. + */ + if (wf_smu_failure_state && !last_failure) { + if (cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + if (fan_system) + wf_control_set_max(fan_system); + if (fan_cpu_main) + wf_control_set_max(fan_cpu_main); + if (fan_hd) + wf_control_set_max(fan_hd); + } + + /* If leaving failure mode, unclamp cpufreq and readjust + * all fans on next iteration + */ + if (!wf_smu_failure_state && last_failure) { + if (cpufreq_clamp) + wf_control_set_min(cpufreq_clamp); + wf_smu_readjust = 1; + } + + /* Overtemp condition detected, notify and start skipping a couple + * ticks to let the temperature go down + */ + if (new_failure & FAILURE_OVERTEMP) { + wf_set_overtemp(); + wf_smu_skipping = 2; + } + + /* We only clear the overtemp condition if overtemp is cleared + * _and_ no other failure is present. Since a sensor error will + * clear the overtemp condition (can't measure temperature) at + * the control loop levels, but we don't want to keep it clear + * here in this case + */ + if (new_failure == 0 && last_failure & FAILURE_OVERTEMP) + wf_clear_overtemp(); +} + +static void wf_smu_new_control(struct wf_control *ct) +{ + if (wf_smu_all_controls_ok) + return; + + if (fan_cpu_main == NULL && !strcmp(ct->name, "cpu-fan")) { + if (wf_get_control(ct) == 0) { + fan_cpu_main = ct; + device_create_file(wf_smu_dev, &dev_attr_cpu_fan); + } + } + + if (fan_system == NULL && !strcmp(ct->name, "system-fan")) { + if (wf_get_control(ct) == 0) { + fan_system = ct; + device_create_file(wf_smu_dev, &dev_attr_sys_fan); + } + } + + if (cpufreq_clamp == NULL && !strcmp(ct->name, "cpufreq-clamp")) { + if (wf_get_control(ct) == 0) + cpufreq_clamp = ct; + } + + /* Darwin property list says the HD fan is only for model ID + * 0, 1, 2 and 3 + */ + + if (wf_smu_mach_model > 3) { + if (fan_system && fan_cpu_main && cpufreq_clamp) + wf_smu_all_controls_ok = 1; + return; + } + + if (fan_hd == NULL && !strcmp(ct->name, "drive-bay-fan")) { + if (wf_get_control(ct) == 0) { + fan_hd = ct; + device_create_file(wf_smu_dev, &dev_attr_hd_fan); + } + } + + if (fan_system && fan_hd && fan_cpu_main && cpufreq_clamp) + wf_smu_all_controls_ok = 1; +} + +static void wf_smu_new_sensor(struct wf_sensor *sr) +{ + if (wf_smu_all_sensors_ok) + return; + + if (sensor_cpu_power == NULL && !strcmp(sr->name, "cpu-power")) { + if (wf_get_sensor(sr) == 0) { + sensor_cpu_power = sr; + device_create_file(wf_smu_dev, &dev_attr_cpu_power); + } + } + + if (sensor_cpu_temp == NULL && !strcmp(sr->name, "cpu-temp")) { + if (wf_get_sensor(sr) == 0) { + sensor_cpu_temp = sr; + device_create_file(wf_smu_dev, &dev_attr_cpu_temp); + } + } + + if (sensor_hd_temp == NULL && !strcmp(sr->name, "hd-temp")) { + if (wf_get_sensor(sr) == 0) { + sensor_hd_temp = sr; + device_create_file(wf_smu_dev, &dev_attr_hd_temp); + } + } + + if (sensor_cpu_power && sensor_cpu_temp && sensor_hd_temp) + wf_smu_all_sensors_ok = 1; +} + + +static int wf_smu_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + switch(event) { + case WF_EVENT_NEW_CONTROL: + DBG("wf: new control %s detected\n", + ((struct wf_control *)data)->name); + wf_smu_new_control(data); + wf_smu_readjust = 1; + break; + case WF_EVENT_NEW_SENSOR: + DBG("wf: new sensor %s detected\n", + ((struct wf_sensor *)data)->name); + wf_smu_new_sensor(data); + break; + case WF_EVENT_TICK: + if (wf_smu_all_controls_ok && wf_smu_all_sensors_ok) + wf_smu_tick(); + } + + return 0; +} + +static struct notifier_block wf_smu_events = { + .notifier_call = wf_smu_notify, +}; + +static int wf_init_pm(void) +{ + struct smu_sdbp_header *hdr; + + hdr = smu_get_sdb_partition(SMU_SDB_SENSORTREE_ID, NULL); + if (hdr != 0) { + struct smu_sdbp_sensortree *st = + (struct smu_sdbp_sensortree *)&hdr[1]; + wf_smu_mach_model = st->model_id; + } + + printk(KERN_INFO "windfarm: Initializing for iMacG5 model ID %d\n", + wf_smu_mach_model); + + return 0; +} + +static int wf_smu_probe(struct device *ddev) +{ + wf_smu_dev = ddev; + + wf_register_client(&wf_smu_events); + + return 0; +} + +static int wf_smu_remove(struct device *ddev) +{ + wf_unregister_client(&wf_smu_events); + + /* XXX We don't have yet a guarantee that our callback isn't + * in progress when returning from wf_unregister_client, so + * we add an arbitrary delay. I'll have to fix that in the core + */ + msleep(1000); + + /* Release all sensors */ + /* One more crappy race: I don't think we have any guarantee here + * that the attribute callback won't race with the sensor beeing + * disposed of, and I'm not 100% certain what best way to deal + * with that except by adding locks all over... I'll do that + * eventually but heh, who ever rmmod this module anyway ? + */ + if (sensor_cpu_power) { + device_remove_file(wf_smu_dev, &dev_attr_cpu_power); + wf_put_sensor(sensor_cpu_power); + } + if (sensor_cpu_temp) { + device_remove_file(wf_smu_dev, &dev_attr_cpu_temp); + wf_put_sensor(sensor_cpu_temp); + } + if (sensor_hd_temp) { + device_remove_file(wf_smu_dev, &dev_attr_hd_temp); + wf_put_sensor(sensor_hd_temp); + } + + /* Release all controls */ + if (fan_cpu_main) { + device_remove_file(wf_smu_dev, &dev_attr_cpu_fan); + wf_put_control(fan_cpu_main); + } + if (fan_hd) { + device_remove_file(wf_smu_dev, &dev_attr_hd_fan); + wf_put_control(fan_hd); + } + if (fan_system) { + device_remove_file(wf_smu_dev, &dev_attr_sys_fan); + wf_put_control(fan_system); + } + if (cpufreq_clamp) + wf_put_control(cpufreq_clamp); + + /* Destroy control loops state structures */ + if (wf_smu_sys_fans) + kfree(wf_smu_sys_fans); + if (wf_smu_cpu_fans) + kfree(wf_smu_cpu_fans); + + wf_smu_dev = NULL; + + return 0; +} + +static struct device_driver wf_smu_driver = { + .name = "windfarm", + .bus = &platform_bus_type, + .probe = wf_smu_probe, + .remove = wf_smu_remove, +}; + + +static int __init wf_smu_init(void) +{ + int rc = -ENODEV; + + if (machine_is_compatible("PowerMac8,1") || + machine_is_compatible("PowerMac8,2")) + rc = wf_init_pm(); + + if (rc == 0) { +#ifdef MODULE + request_module("windfarm_smu_controls"); + request_module("windfarm_smu_sensors"); + request_module("windfarm_lm75_sensor"); + +#endif /* MODULE */ + driver_register(&wf_smu_driver); + } + + return rc; +} + +static void __exit wf_smu_exit(void) +{ + + driver_unregister(&wf_smu_driver); +} + + +module_init(wf_smu_init); +module_exit(wf_smu_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt "); +MODULE_DESCRIPTION("Thermal control logic for iMac G5"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_pm91.c b/drivers/macintosh/windfarm_pm91.c new file mode 100644 index 0000000..43243cf --- /dev/null +++ b/drivers/macintosh/windfarm_pm91.c @@ -0,0 +1,814 @@ +/* + * Windfarm PowerMac thermal control. SMU based 1 CPU desktop control loops + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + * + * The algorithm used is the PID control algorithm, used the same + * way the published Darwin code does, using the same values that + * are present in the Darwin 8.2 snapshot property lists (note however + * that none of the code has been re-used, it's a complete re-implementation + * + * The various control loops found in Darwin config file are: + * + * PowerMac9,1 + * =========== + * + * Has 3 control loops: CPU fans is similar to PowerMac8,1 (though it doesn't + * try to play with other control loops fans). Drive bay is rather basic PID + * with one sensor and one fan. Slots area is a bit different as the Darwin + * driver is supposed to be capable of working in a special "AGP" mode which + * involves the presence of an AGP sensor and an AGP fan (possibly on the + * AGP card itself). I can't deal with that special mode as I don't have + * access to those additional sensor/fans for now (though ultimately, it would + * be possible to add sensor objects for them) so I'm only implementing the + * basic PCI slot control loop + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "windfarm.h" +#include "windfarm_pid.h" + +#define VERSION "0.4" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +/* define this to force CPU overtemp to 74 degree, useful for testing + * the overtemp code + */ +#undef HACKED_OVERTEMP + +static struct device *wf_smu_dev; + +/* Controls & sensors */ +static struct wf_sensor *sensor_cpu_power; +static struct wf_sensor *sensor_cpu_temp; +static struct wf_sensor *sensor_hd_temp; +static struct wf_sensor *sensor_slots_power; +static struct wf_control *fan_cpu_main; +static struct wf_control *fan_cpu_second; +static struct wf_control *fan_cpu_third; +static struct wf_control *fan_hd; +static struct wf_control *fan_slots; +static struct wf_control *cpufreq_clamp; + +/* Set to kick the control loop into life */ +static int wf_smu_all_controls_ok, wf_smu_all_sensors_ok, wf_smu_started; + +/* Failure handling.. could be nicer */ +#define FAILURE_FAN 0x01 +#define FAILURE_SENSOR 0x02 +#define FAILURE_OVERTEMP 0x04 + +static unsigned int wf_smu_failure_state; +static int wf_smu_readjust, wf_smu_skipping; + +/* + * ****** CPU Fans Control Loop ****** + * + */ + + +#define WF_SMU_CPU_FANS_INTERVAL 1 +#define WF_SMU_CPU_FANS_MAX_HISTORY 16 + +/* State data used by the cpu fans control loop + */ +struct wf_smu_cpu_fans_state { + int ticks; + s32 cpu_setpoint; + struct wf_cpu_pid_state pid; +}; + +static struct wf_smu_cpu_fans_state *wf_smu_cpu_fans; + + + +/* + * ****** Drive Fan Control Loop ****** + * + */ + +struct wf_smu_drive_fans_state { + int ticks; + s32 setpoint; + struct wf_pid_state pid; +}; + +static struct wf_smu_drive_fans_state *wf_smu_drive_fans; + +/* + * ****** Slots Fan Control Loop ****** + * + */ + +struct wf_smu_slots_fans_state { + int ticks; + s32 setpoint; + struct wf_pid_state pid; +}; + +static struct wf_smu_slots_fans_state *wf_smu_slots_fans; + +/* + * ***** Implementation ***** + * + */ + + +static void wf_smu_create_cpu_fans(void) +{ + struct wf_cpu_pid_param pid_param; + struct smu_sdbp_header *hdr; + struct smu_sdbp_cpupiddata *piddata; + struct smu_sdbp_fvt *fvt; + s32 tmax, tdelta, maxpow, powadj; + + /* First, locate the PID params in SMU SBD */ + hdr = smu_get_sdb_partition(SMU_SDB_CPUPIDDATA_ID, NULL); + if (hdr == 0) { + printk(KERN_WARNING "windfarm: CPU PID fan config not found " + "max fan speed\n"); + goto fail; + } + piddata = (struct smu_sdbp_cpupiddata *)&hdr[1]; + + /* Get the FVT params for operating point 0 (the only supported one + * for now) in order to get tmax + */ + hdr = smu_get_sdb_partition(SMU_SDB_FVT_ID, NULL); + if (hdr) { + fvt = (struct smu_sdbp_fvt *)&hdr[1]; + tmax = ((s32)fvt->maxtemp) << 16; + } else + tmax = 0x5e0000; /* 94 degree default */ + + /* Alloc & initialize state */ + wf_smu_cpu_fans = kmalloc(sizeof(struct wf_smu_cpu_fans_state), + GFP_KERNEL); + if (wf_smu_cpu_fans == NULL) + goto fail; + wf_smu_cpu_fans->ticks = 1; + + /* Fill PID params */ + pid_param.interval = WF_SMU_CPU_FANS_INTERVAL; + pid_param.history_len = piddata->history_len; + if (pid_param.history_len > WF_CPU_PID_MAX_HISTORY) { + printk(KERN_WARNING "windfarm: History size overflow on " + "CPU control loop (%d)\n", piddata->history_len); + pid_param.history_len = WF_CPU_PID_MAX_HISTORY; + } + pid_param.gd = piddata->gd; + pid_param.gp = piddata->gp; + pid_param.gr = piddata->gr / pid_param.history_len; + + tdelta = ((s32)piddata->target_temp_delta) << 16; + maxpow = ((s32)piddata->max_power) << 16; + powadj = ((s32)piddata->power_adj) << 16; + + pid_param.tmax = tmax; + pid_param.ttarget = tmax - tdelta; + pid_param.pmaxadj = maxpow - powadj; + + pid_param.min = fan_cpu_main->ops->get_min(fan_cpu_main); + pid_param.max = fan_cpu_main->ops->get_max(fan_cpu_main); + + wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param); + + DBG("wf: CPU Fan control initialized.\n"); + DBG(" ttarged=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM\n", + FIX32TOPRINT(pid_param.ttarget), FIX32TOPRINT(pid_param.tmax), + pid_param.min, pid_param.max); + + return; + + fail: + printk(KERN_WARNING "windfarm: CPU fan config not found\n" + "for this machine model, max fan speed\n"); + + if (cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + if (fan_cpu_main) + wf_control_set_max(fan_cpu_main); +} + +static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st) +{ + s32 new_setpoint, temp, power; + int rc; + + if (--st->ticks != 0) { + if (wf_smu_readjust) + goto readjust; + return; + } + st->ticks = WF_SMU_CPU_FANS_INTERVAL; + + rc = sensor_cpu_temp->ops->get_value(sensor_cpu_temp, &temp); + if (rc) { + printk(KERN_WARNING "windfarm: CPU temp sensor error %d\n", + rc); + wf_smu_failure_state |= FAILURE_SENSOR; + return; + } + + rc = sensor_cpu_power->ops->get_value(sensor_cpu_power, &power); + if (rc) { + printk(KERN_WARNING "windfarm: CPU power sensor error %d\n", + rc); + wf_smu_failure_state |= FAILURE_SENSOR; + return; + } + + DBG("wf_smu: CPU Fans tick ! CPU temp: %d.%03d, power: %d.%03d\n", + FIX32TOPRINT(temp), FIX32TOPRINT(power)); + +#ifdef HACKED_OVERTEMP + if (temp > 0x4a0000) + wf_smu_failure_state |= FAILURE_OVERTEMP; +#else + if (temp > st->pid.param.tmax) + wf_smu_failure_state |= FAILURE_OVERTEMP; +#endif + new_setpoint = wf_cpu_pid_run(&st->pid, power, temp); + + DBG("wf_smu: new_setpoint: %d RPM\n", (int)new_setpoint); + + if (st->cpu_setpoint == new_setpoint) + return; + st->cpu_setpoint = new_setpoint; + readjust: + if (fan_cpu_main && wf_smu_failure_state == 0) { + rc = fan_cpu_main->ops->set_value(fan_cpu_main, + st->cpu_setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: CPU main fan" + " error %d\n", rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } + if (fan_cpu_second && wf_smu_failure_state == 0) { + rc = fan_cpu_second->ops->set_value(fan_cpu_second, + st->cpu_setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: CPU second fan" + " error %d\n", rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } + if (fan_cpu_third && wf_smu_failure_state == 0) { + rc = fan_cpu_main->ops->set_value(fan_cpu_third, + st->cpu_setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: CPU third fan" + " error %d\n", rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } +} + +static void wf_smu_create_drive_fans(void) +{ + struct wf_pid_param param = { + .interval = 5, + .history_len = 2, + .gd = 0x01e00000, + .gp = 0x00500000, + .gr = 0x00000000, + .itarget = 0x00200000, + }; + + /* Alloc & initialize state */ + wf_smu_drive_fans = kmalloc(sizeof(struct wf_smu_drive_fans_state), + GFP_KERNEL); + if (wf_smu_drive_fans == NULL) { + printk(KERN_WARNING "windfarm: Memory allocation error" + " max fan speed\n"); + goto fail; + } + wf_smu_drive_fans->ticks = 1; + + /* Fill PID params */ + param.additive = (fan_hd->type == WF_CONTROL_RPM_FAN); + param.min = fan_hd->ops->get_min(fan_hd); + param.max = fan_hd->ops->get_max(fan_hd); + wf_pid_init(&wf_smu_drive_fans->pid, ¶m); + + DBG("wf: Drive Fan control initialized.\n"); + DBG(" itarged=%d.%03d, min=%d RPM, max=%d RPM\n", + FIX32TOPRINT(param.itarget), param.min, param.max); + return; + + fail: + if (fan_hd) + wf_control_set_max(fan_hd); +} + +static void wf_smu_drive_fans_tick(struct wf_smu_drive_fans_state *st) +{ + s32 new_setpoint, temp; + int rc; + + if (--st->ticks != 0) { + if (wf_smu_readjust) + goto readjust; + return; + } + st->ticks = st->pid.param.interval; + + rc = sensor_hd_temp->ops->get_value(sensor_hd_temp, &temp); + if (rc) { + printk(KERN_WARNING "windfarm: HD temp sensor error %d\n", + rc); + wf_smu_failure_state |= FAILURE_SENSOR; + return; + } + + DBG("wf_smu: Drive Fans tick ! HD temp: %d.%03d\n", + FIX32TOPRINT(temp)); + + if (temp > (st->pid.param.itarget + 0x50000)) + wf_smu_failure_state |= FAILURE_OVERTEMP; + + new_setpoint = wf_pid_run(&st->pid, temp); + + DBG("wf_smu: new_setpoint: %d\n", (int)new_setpoint); + + if (st->setpoint == new_setpoint) + return; + st->setpoint = new_setpoint; + readjust: + if (fan_hd && wf_smu_failure_state == 0) { + rc = fan_hd->ops->set_value(fan_hd, st->setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: HD fan error %d\n", + rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } +} + +static void wf_smu_create_slots_fans(void) +{ + struct wf_pid_param param = { + .interval = 1, + .history_len = 8, + .gd = 0x00000000, + .gp = 0x00000000, + .gr = 0x00020000, + .itarget = 0x00000000 + }; + + /* Alloc & initialize state */ + wf_smu_slots_fans = kmalloc(sizeof(struct wf_smu_slots_fans_state), + GFP_KERNEL); + if (wf_smu_slots_fans == NULL) { + printk(KERN_WARNING "windfarm: Memory allocation error" + " max fan speed\n"); + goto fail; + } + wf_smu_slots_fans->ticks = 1; + + /* Fill PID params */ + param.additive = (fan_slots->type == WF_CONTROL_RPM_FAN); + param.min = fan_slots->ops->get_min(fan_slots); + param.max = fan_slots->ops->get_max(fan_slots); + wf_pid_init(&wf_smu_slots_fans->pid, ¶m); + + DBG("wf: Slots Fan control initialized.\n"); + DBG(" itarged=%d.%03d, min=%d RPM, max=%d RPM\n", + FIX32TOPRINT(param.itarget), param.min, param.max); + return; + + fail: + if (fan_slots) + wf_control_set_max(fan_slots); +} + +static void wf_smu_slots_fans_tick(struct wf_smu_slots_fans_state *st) +{ + s32 new_setpoint, power; + int rc; + + if (--st->ticks != 0) { + if (wf_smu_readjust) + goto readjust; + return; + } + st->ticks = st->pid.param.interval; + + rc = sensor_slots_power->ops->get_value(sensor_slots_power, &power); + if (rc) { + printk(KERN_WARNING "windfarm: Slots power sensor error %d\n", + rc); + wf_smu_failure_state |= FAILURE_SENSOR; + return; + } + + DBG("wf_smu: Slots Fans tick ! Slots power: %d.%03d\n", + FIX32TOPRINT(power)); + +#if 0 /* Check what makes a good overtemp condition */ + if (power > (st->pid.param.itarget + 0x50000)) + wf_smu_failure_state |= FAILURE_OVERTEMP; +#endif + + new_setpoint = wf_pid_run(&st->pid, power); + + DBG("wf_smu: new_setpoint: %d\n", (int)new_setpoint); + + if (st->setpoint == new_setpoint) + return; + st->setpoint = new_setpoint; + readjust: + if (fan_slots && wf_smu_failure_state == 0) { + rc = fan_slots->ops->set_value(fan_slots, st->setpoint); + if (rc) { + printk(KERN_WARNING "windfarm: Slots fan error %d\n", + rc); + wf_smu_failure_state |= FAILURE_FAN; + } + } +} + + +/* + * ****** Attributes ****** + * + */ + +#define BUILD_SHOW_FUNC_FIX(name, data) \ +static ssize_t show_##name(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + ssize_t r; \ + s32 val = 0; \ + data->ops->get_value(data, &val); \ + r = sprintf(buf, "%d.%03d", FIX32TOPRINT(val)); \ + return r; \ +} \ +static DEVICE_ATTR(name,S_IRUGO,show_##name, NULL); + + +#define BUILD_SHOW_FUNC_INT(name, data) \ +static ssize_t show_##name(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + s32 val = 0; \ + data->ops->get_value(data, &val); \ + return sprintf(buf, "%d", val); \ +} \ +static DEVICE_ATTR(name,S_IRUGO,show_##name, NULL); + +BUILD_SHOW_FUNC_INT(cpu_fan, fan_cpu_main); +BUILD_SHOW_FUNC_INT(hd_fan, fan_hd); +BUILD_SHOW_FUNC_INT(slots_fan, fan_slots); + +BUILD_SHOW_FUNC_FIX(cpu_temp, sensor_cpu_temp); +BUILD_SHOW_FUNC_FIX(cpu_power, sensor_cpu_power); +BUILD_SHOW_FUNC_FIX(hd_temp, sensor_hd_temp); +BUILD_SHOW_FUNC_FIX(slots_power, sensor_slots_power); + +/* + * ****** Setup / Init / Misc ... ****** + * + */ + +static void wf_smu_tick(void) +{ + unsigned int last_failure = wf_smu_failure_state; + unsigned int new_failure; + + if (!wf_smu_started) { + DBG("wf: creating control loops !\n"); + wf_smu_create_drive_fans(); + wf_smu_create_slots_fans(); + wf_smu_create_cpu_fans(); + wf_smu_started = 1; + } + + /* Skipping ticks */ + if (wf_smu_skipping && --wf_smu_skipping) + return; + + wf_smu_failure_state = 0; + if (wf_smu_drive_fans) + wf_smu_drive_fans_tick(wf_smu_drive_fans); + if (wf_smu_slots_fans) + wf_smu_slots_fans_tick(wf_smu_slots_fans); + if (wf_smu_cpu_fans) + wf_smu_cpu_fans_tick(wf_smu_cpu_fans); + + wf_smu_readjust = 0; + new_failure = wf_smu_failure_state & ~last_failure; + + /* If entering failure mode, clamp cpufreq and ramp all + * fans to full speed. + */ + if (wf_smu_failure_state && !last_failure) { + if (cpufreq_clamp) + wf_control_set_max(cpufreq_clamp); + if (fan_cpu_main) + wf_control_set_max(fan_cpu_main); + if (fan_cpu_second) + wf_control_set_max(fan_cpu_second); + if (fan_cpu_third) + wf_control_set_max(fan_cpu_third); + if (fan_hd) + wf_control_set_max(fan_hd); + if (fan_slots) + wf_control_set_max(fan_slots); + } + + /* If leaving failure mode, unclamp cpufreq and readjust + * all fans on next iteration + */ + if (!wf_smu_failure_state && last_failure) { + if (cpufreq_clamp) + wf_control_set_min(cpufreq_clamp); + wf_smu_readjust = 1; + } + + /* Overtemp condition detected, notify and start skipping a couple + * ticks to let the temperature go down + */ + if (new_failure & FAILURE_OVERTEMP) { + wf_set_overtemp(); + wf_smu_skipping = 2; + } + + /* We only clear the overtemp condition if overtemp is cleared + * _and_ no other failure is present. Since a sensor error will + * clear the overtemp condition (can't measure temperature) at + * the control loop levels, but we don't want to keep it clear + * here in this case + */ + if (new_failure == 0 && last_failure & FAILURE_OVERTEMP) + wf_clear_overtemp(); +} + + +static void wf_smu_new_control(struct wf_control *ct) +{ + if (wf_smu_all_controls_ok) + return; + + if (fan_cpu_main == NULL && !strcmp(ct->name, "cpu-rear-fan-0")) { + if (wf_get_control(ct) == 0) { + fan_cpu_main = ct; + device_create_file(wf_smu_dev, &dev_attr_cpu_fan); + } + } + + if (fan_cpu_second == NULL && !strcmp(ct->name, "cpu-rear-fan-1")) { + if (wf_get_control(ct) == 0) + fan_cpu_second = ct; + } + + if (fan_cpu_third == NULL && !strcmp(ct->name, "cpu-front-fan-0")) { + if (wf_get_control(ct) == 0) + fan_cpu_third = ct; + } + + if (cpufreq_clamp == NULL && !strcmp(ct->name, "cpufreq-clamp")) { + if (wf_get_control(ct) == 0) + cpufreq_clamp = ct; + } + + if (fan_hd == NULL && !strcmp(ct->name, "drive-bay-fan")) { + if (wf_get_control(ct) == 0) { + fan_hd = ct; + device_create_file(wf_smu_dev, &dev_attr_hd_fan); + } + } + + if (fan_slots == NULL && !strcmp(ct->name, "slots-fan")) { + if (wf_get_control(ct) == 0) { + fan_slots = ct; + device_create_file(wf_smu_dev, &dev_attr_slots_fan); + } + } + + if (fan_cpu_main && (fan_cpu_second || fan_cpu_third) && fan_hd && + fan_slots && cpufreq_clamp) + wf_smu_all_controls_ok = 1; +} + +static void wf_smu_new_sensor(struct wf_sensor *sr) +{ + if (wf_smu_all_sensors_ok) + return; + + if (sensor_cpu_power == NULL && !strcmp(sr->name, "cpu-power")) { + if (wf_get_sensor(sr) == 0) { + sensor_cpu_power = sr; + device_create_file(wf_smu_dev, &dev_attr_cpu_power); + } + } + + if (sensor_cpu_temp == NULL && !strcmp(sr->name, "cpu-temp")) { + if (wf_get_sensor(sr) == 0) { + sensor_cpu_temp = sr; + device_create_file(wf_smu_dev, &dev_attr_cpu_temp); + } + } + + if (sensor_hd_temp == NULL && !strcmp(sr->name, "hd-temp")) { + if (wf_get_sensor(sr) == 0) { + sensor_hd_temp = sr; + device_create_file(wf_smu_dev, &dev_attr_hd_temp); + } + } + + if (sensor_slots_power == NULL && !strcmp(sr->name, "slots-power")) { + if (wf_get_sensor(sr) == 0) { + sensor_slots_power = sr; + device_create_file(wf_smu_dev, &dev_attr_slots_power); + } + } + + if (sensor_cpu_power && sensor_cpu_temp && + sensor_hd_temp && sensor_slots_power) + wf_smu_all_sensors_ok = 1; +} + + +static int wf_smu_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + switch(event) { + case WF_EVENT_NEW_CONTROL: + DBG("wf: new control %s detected\n", + ((struct wf_control *)data)->name); + wf_smu_new_control(data); + wf_smu_readjust = 1; + break; + case WF_EVENT_NEW_SENSOR: + DBG("wf: new sensor %s detected\n", + ((struct wf_sensor *)data)->name); + wf_smu_new_sensor(data); + break; + case WF_EVENT_TICK: + if (wf_smu_all_controls_ok && wf_smu_all_sensors_ok) + wf_smu_tick(); + } + + return 0; +} + +static struct notifier_block wf_smu_events = { + .notifier_call = wf_smu_notify, +}; + +static int wf_init_pm(void) +{ + printk(KERN_INFO "windfarm: Initializing for Desktop G5 model\n"); + + return 0; +} + +static int wf_smu_probe(struct device *ddev) +{ + wf_smu_dev = ddev; + + wf_register_client(&wf_smu_events); + + return 0; +} + +static int wf_smu_remove(struct device *ddev) +{ + wf_unregister_client(&wf_smu_events); + + /* XXX We don't have yet a guarantee that our callback isn't + * in progress when returning from wf_unregister_client, so + * we add an arbitrary delay. I'll have to fix that in the core + */ + msleep(1000); + + /* Release all sensors */ + /* One more crappy race: I don't think we have any guarantee here + * that the attribute callback won't race with the sensor beeing + * disposed of, and I'm not 100% certain what best way to deal + * with that except by adding locks all over... I'll do that + * eventually but heh, who ever rmmod this module anyway ? + */ + if (sensor_cpu_power) { + device_remove_file(wf_smu_dev, &dev_attr_cpu_power); + wf_put_sensor(sensor_cpu_power); + } + if (sensor_cpu_temp) { + device_remove_file(wf_smu_dev, &dev_attr_cpu_temp); + wf_put_sensor(sensor_cpu_temp); + } + if (sensor_hd_temp) { + device_remove_file(wf_smu_dev, &dev_attr_hd_temp); + wf_put_sensor(sensor_hd_temp); + } + if (sensor_slots_power) { + device_remove_file(wf_smu_dev, &dev_attr_slots_power); + wf_put_sensor(sensor_slots_power); + } + + /* Release all controls */ + if (fan_cpu_main) { + device_remove_file(wf_smu_dev, &dev_attr_cpu_fan); + wf_put_control(fan_cpu_main); + } + if (fan_cpu_second) + wf_put_control(fan_cpu_second); + if (fan_cpu_third) + wf_put_control(fan_cpu_third); + if (fan_hd) { + device_remove_file(wf_smu_dev, &dev_attr_hd_fan); + wf_put_control(fan_hd); + } + if (fan_slots) { + device_remove_file(wf_smu_dev, &dev_attr_slots_fan); + wf_put_control(fan_slots); + } + if (cpufreq_clamp) + wf_put_control(cpufreq_clamp); + + /* Destroy control loops state structures */ + if (wf_smu_slots_fans) + kfree(wf_smu_cpu_fans); + if (wf_smu_drive_fans) + kfree(wf_smu_cpu_fans); + if (wf_smu_cpu_fans) + kfree(wf_smu_cpu_fans); + + wf_smu_dev = NULL; + + return 0; +} + +static struct device_driver wf_smu_driver = { + .name = "windfarm", + .bus = &platform_bus_type, + .probe = wf_smu_probe, + .remove = wf_smu_remove, +}; + + +static int __init wf_smu_init(void) +{ + int rc = -ENODEV; + + if (machine_is_compatible("PowerMac9,1")) + rc = wf_init_pm(); + + if (rc == 0) { +#ifdef MODULE + request_module("windfarm_smu_controls"); + request_module("windfarm_smu_sensors"); + request_module("windfarm_lm75_sensor"); + +#endif /* MODULE */ + driver_register(&wf_smu_driver); + } + + return rc; +} + +static void __exit wf_smu_exit(void) +{ + + driver_unregister(&wf_smu_driver); +} + + +module_init(wf_smu_init); +module_exit(wf_smu_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt "); +MODULE_DESCRIPTION("Thermal control logic for PowerMac9,1"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_smu_controls.c b/drivers/macintosh/windfarm_smu_controls.c new file mode 100644 index 0000000..2c3158c --- /dev/null +++ b/drivers/macintosh/windfarm_smu_controls.c @@ -0,0 +1,282 @@ +/* + * Windfarm PowerMac thermal control. SMU based controls + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "windfarm.h" + +#define VERSION "0.3" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +/* + * SMU fans control object + */ + +static LIST_HEAD(smu_fans); + +struct smu_fan_control { + struct list_head link; + int fan_type; /* 0 = rpm, 1 = pwm */ + u32 reg; /* index in SMU */ + s32 value; /* current value */ + s32 min, max; /* min/max values */ + struct wf_control ctrl; +}; +#define to_smu_fan(c) container_of(c, struct smu_fan_control, ctrl) + +static int smu_set_fan(int pwm, u8 id, u16 value) +{ + struct smu_cmd cmd; + u8 buffer[16]; + DECLARE_COMPLETION(comp); + int rc; + + /* Fill SMU command structure */ + cmd.cmd = SMU_CMD_FAN_COMMAND; + cmd.data_len = 14; + cmd.reply_len = 16; + cmd.data_buf = cmd.reply_buf = buffer; + cmd.status = 0; + cmd.done = smu_done_complete; + cmd.misc = ∁ + + /* Fill argument buffer */ + memset(buffer, 0, 16); + buffer[0] = pwm ? 0x10 : 0x00; + buffer[1] = 0x01 << id; + *((u16 *)&buffer[2 + id * 2]) = value; + + rc = smu_queue_cmd(&cmd); + if (rc) + return rc; + wait_for_completion(&comp); + return cmd.status; +} + +static void smu_fan_release(struct wf_control *ct) +{ + struct smu_fan_control *fct = to_smu_fan(ct); + + kfree(fct); +} + +static int smu_fan_set(struct wf_control *ct, s32 value) +{ + struct smu_fan_control *fct = to_smu_fan(ct); + + if (value < fct->min) + value = fct->min; + if (value > fct->max) + value = fct->max; + fct->value = value; + + return smu_set_fan(fct->fan_type, fct->reg, value); +} + +static int smu_fan_get(struct wf_control *ct, s32 *value) +{ + struct smu_fan_control *fct = to_smu_fan(ct); + *value = fct->value; /* todo: read from SMU */ + return 0; +} + +static s32 smu_fan_min(struct wf_control *ct) +{ + struct smu_fan_control *fct = to_smu_fan(ct); + return fct->min; +} + +static s32 smu_fan_max(struct wf_control *ct) +{ + struct smu_fan_control *fct = to_smu_fan(ct); + return fct->max; +} + +static struct wf_control_ops smu_fan_ops = { + .set_value = smu_fan_set, + .get_value = smu_fan_get, + .get_min = smu_fan_min, + .get_max = smu_fan_max, + .release = smu_fan_release, + .owner = THIS_MODULE, +}; + +static struct smu_fan_control *smu_fan_create(struct device_node *node, + int pwm_fan) +{ + struct smu_fan_control *fct; + s32 *v; u32 *reg; + char *l; + + fct = kmalloc(sizeof(struct smu_fan_control), GFP_KERNEL); + if (fct == NULL) + return NULL; + fct->ctrl.ops = &smu_fan_ops; + l = (char *)get_property(node, "location", NULL); + if (l == NULL) + goto fail; + + fct->fan_type = pwm_fan; + fct->ctrl.type = pwm_fan ? WF_CONTROL_PWM_FAN : WF_CONTROL_RPM_FAN; + + /* We use the name & location here the same way we do for SMU sensors, + * see the comment in windfarm_smu_sensors.c. The locations are a bit + * less consistent here between the iMac and the desktop models, but + * that is good enough for our needs for now at least. + * + * One problem though is that Apple seem to be inconsistent with case + * and the kernel doesn't have strcasecmp =P + */ + + fct->ctrl.name = NULL; + + /* Names used on desktop models */ + if (!strcmp(l, "Rear Fan 0") || !strcmp(l, "Rear Fan") || + !strcmp(l, "Rear fan 0") || !strcmp(l, "Rear fan")) + fct->ctrl.name = "cpu-rear-fan-0"; + else if (!strcmp(l, "Rear Fan 1") || !strcmp(l, "Rear fan 1")) + fct->ctrl.name = "cpu-rear-fan-1"; + else if (!strcmp(l, "Front Fan 0") || !strcmp(l, "Front Fan") || + !strcmp(l, "Front fan 0") || !strcmp(l, "Front fan")) + fct->ctrl.name = "cpu-front-fan-0"; + else if (!strcmp(l, "Front Fan 1") || !strcmp(l, "Front fan 1")) + fct->ctrl.name = "cpu-front-fan-1"; + else if (!strcmp(l, "Slots Fan") || !strcmp(l, "Slots fan")) + fct->ctrl.name = "slots-fan"; + else if (!strcmp(l, "Drive Bay") || !strcmp(l, "Drive bay")) + fct->ctrl.name = "drive-bay-fan"; + + /* Names used on iMac models */ + if (!strcmp(l, "System Fan") || !strcmp(l, "System fan")) + fct->ctrl.name = "system-fan"; + else if (!strcmp(l, "CPU Fan") || !strcmp(l, "CPU fan")) + fct->ctrl.name = "cpu-fan"; + else if (!strcmp(l, "Hard Drive") || !strcmp(l, "Hard drive")) + fct->ctrl.name = "drive-bay-fan"; + + /* Unrecognized fan, bail out */ + if (fct->ctrl.name == NULL) + goto fail; + + /* Get min & max values*/ + v = (s32 *)get_property(node, "min-value", NULL); + if (v == NULL) + goto fail; + fct->min = *v; + v = (s32 *)get_property(node, "max-value", NULL); + if (v == NULL) + goto fail; + fct->max = *v; + + /* Get "reg" value */ + reg = (u32 *)get_property(node, "reg", NULL); + if (reg == NULL) + goto fail; + fct->reg = *reg; + + if (wf_register_control(&fct->ctrl)) + goto fail; + + return fct; + fail: + kfree(fct); + return NULL; +} + + +static int __init smu_controls_init(void) +{ + struct device_node *smu, *fans, *fan; + + if (!smu_present()) + return -ENODEV; + + smu = of_find_node_by_type(NULL, "smu"); + if (smu == NULL) + return -ENODEV; + + /* Look for RPM fans */ + for (fans = NULL; (fans = of_get_next_child(smu, fans)) != NULL;) + if (!strcmp(fans->name, "rpm-fans")) + break; + for (fan = NULL; + fans && (fan = of_get_next_child(fans, fan)) != NULL;) { + struct smu_fan_control *fct; + + fct = smu_fan_create(fan, 0); + if (fct == NULL) { + printk(KERN_WARNING "windfarm: Failed to create SMU " + "RPM fan %s\n", fan->name); + continue; + } + list_add(&fct->link, &smu_fans); + } + of_node_put(fans); + + + /* Look for PWM fans */ + for (fans = NULL; (fans = of_get_next_child(smu, fans)) != NULL;) + if (!strcmp(fans->name, "pwm-fans")) + break; + for (fan = NULL; + fans && (fan = of_get_next_child(fans, fan)) != NULL;) { + struct smu_fan_control *fct; + + fct = smu_fan_create(fan, 1); + if (fct == NULL) { + printk(KERN_WARNING "windfarm: Failed to create SMU " + "PWM fan %s\n", fan->name); + continue; + } + list_add(&fct->link, &smu_fans); + } + of_node_put(fans); + of_node_put(smu); + + return 0; +} + +static void __exit smu_controls_exit(void) +{ + struct smu_fan_control *fct; + + while (!list_empty(&smu_fans)) { + fct = list_entry(smu_fans.next, struct smu_fan_control, link); + list_del(&fct->link); + wf_unregister_control(&fct->ctrl); + } +} + + +module_init(smu_controls_init); +module_exit(smu_controls_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt "); +MODULE_DESCRIPTION("SMU control objects for PowerMacs thermal control"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/macintosh/windfarm_smu_sensors.c b/drivers/macintosh/windfarm_smu_sensors.c new file mode 100644 index 0000000..b558cc2 --- /dev/null +++ b/drivers/macintosh/windfarm_smu_sensors.c @@ -0,0 +1,479 @@ +/* + * Windfarm PowerMac thermal control. SMU based sensors + * + * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. + * + * + * Released under the term of the GNU GPL v2. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "windfarm.h" + +#define VERSION "0.2" + +#undef DEBUG + +#ifdef DEBUG +#define DBG(args...) printk(args) +#else +#define DBG(args...) do { } while(0) +#endif + +/* + * Various SMU "partitions" calibration objects for which we + * keep pointers here for use by bits & pieces of the driver + */ +static struct smu_sdbp_cpuvcp *cpuvcp; +static int cpuvcp_version; +static struct smu_sdbp_cpudiode *cpudiode; +static struct smu_sdbp_slotspow *slotspow; +static u8 *debugswitches; + +/* + * SMU basic sensors objects + */ + +static LIST_HEAD(smu_ads); + +struct smu_ad_sensor { + struct list_head link; + u32 reg; /* index in SMU */ + struct wf_sensor sens; +}; +#define to_smu_ads(c) container_of(c, struct smu_ad_sensor, sens) + +static void smu_ads_release(struct wf_sensor *sr) +{ + struct smu_ad_sensor *ads = to_smu_ads(sr); + + kfree(ads); +} + +static int smu_read_adc(u8 id, s32 *value) +{ + struct smu_simple_cmd cmd; + DECLARE_COMPLETION(comp); + int rc; + + rc = smu_queue_simple(&cmd, SMU_CMD_READ_ADC, 1, + smu_done_complete, &comp, id); + if (rc) + return rc; + wait_for_completion(&comp); + if (cmd.cmd.status != 0) + return cmd.cmd.status; + if (cmd.cmd.reply_len != 2) { + printk(KERN_ERR "winfarm: read ADC 0x%x returned %d bytes !\n", + id, cmd.cmd.reply_len); + return -EIO; + } + *value = *((u16 *)cmd.buffer); + return 0; +} + +static int smu_cputemp_get(struct wf_sensor *sr, s32 *value) +{ + struct smu_ad_sensor *ads = to_smu_ads(sr); + int rc; + s32 val; + s64 scaled; + + rc = smu_read_adc(ads->reg, &val); + if (rc) { + printk(KERN_ERR "windfarm: read CPU temp failed, err %d\n", + rc); + return rc; + } + + /* Ok, we have to scale & adjust, taking units into account */ + scaled = (s64)(((u64)val) * (u64)cpudiode->m_value); + scaled >>= 3; + scaled += ((s64)cpudiode->b_value) << 9; + *value = (s32)(scaled << 1); + + return 0; +} + +static int smu_cpuamp_get(struct wf_sensor *sr, s32 *value) +{ + struct smu_ad_sensor *ads = to_smu_ads(sr); + s32 val, scaled; + int rc; + + rc = smu_read_adc(ads->reg, &val); + if (rc) { + printk(KERN_ERR "windfarm: read CPU current failed, err %d\n", + rc); + return rc; + } + + /* Ok, we have to scale & adjust, taking units into account */ + scaled = (s32)(val * (u32)cpuvcp->curr_scale); + scaled += (s32)cpuvcp->curr_offset; + *value = scaled << 4; + + return 0; +} + +static int smu_cpuvolt_get(struct wf_sensor *sr, s32 *value) +{ + struct smu_ad_sensor *ads = to_smu_ads(sr); + s32 val, scaled; + int rc; + + rc = smu_read_adc(ads->reg, &val); + if (rc) { + printk(KERN_ERR "windfarm: read CPU voltage failed, err %d\n", + rc); + return rc; + } + + /* Ok, we have to scale & adjust, taking units into account */ + scaled = (s32)(val * (u32)cpuvcp->volt_scale); + scaled += (s32)cpuvcp->volt_offset; + *value = scaled << 4; + + return 0; +} + +static int smu_slotspow_get(struct wf_sensor *sr, s32 *value) +{ + struct smu_ad_sensor *ads = to_smu_ads(sr); + s32 val, scaled; + int rc; + + rc = smu_read_adc(ads->reg, &val); + if (rc) { + printk(KERN_ERR "windfarm: read slots power failed, err %d\n", + rc); + return rc; + } + + /* Ok, we have to scale & adjust, taking units into account */ + scaled = (s32)(val * (u32)slotspow->pow_scale); + scaled += (s32)slotspow->pow_offset; + *value = scaled << 4; + + return 0; +} + + +static struct wf_sensor_ops smu_cputemp_ops = { + .get_value = smu_cputemp_get, + .release = smu_ads_release, + .owner = THIS_MODULE, +}; +static struct wf_sensor_ops smu_cpuamp_ops = { + .get_value = smu_cpuamp_get, + .release = smu_ads_release, + .owner = THIS_MODULE, +}; +static struct wf_sensor_ops smu_cpuvolt_ops = { + .get_value = smu_cpuvolt_get, + .release = smu_ads_release, + .owner = THIS_MODULE, +}; +static struct wf_sensor_ops smu_slotspow_ops = { + .get_value = smu_slotspow_get, + .release = smu_ads_release, + .owner = THIS_MODULE, +}; + + +static struct smu_ad_sensor *smu_ads_create(struct device_node *node) +{ + struct smu_ad_sensor *ads; + char *c, *l; + u32 *v; + + ads = kmalloc(sizeof(struct smu_ad_sensor), GFP_KERNEL); + if (ads == NULL) + return NULL; + c = (char *)get_property(node, "device_type", NULL); + l = (char *)get_property(node, "location", NULL); + if (c == NULL || l == NULL) + goto fail; + + /* We currently pick the sensors based on the OF name and location + * properties, while Darwin uses the sensor-id's. + * The problem with the IDs is that they are model specific while it + * looks like apple has been doing a reasonably good job at keeping + * the names and locations consistents so I'll stick with the names + * and locations for now. + */ + if (!strcmp(c, "temp-sensor") && + !strcmp(l, "CPU T-Diode")) { + ads->sens.ops = &smu_cputemp_ops; + ads->sens.name = "cpu-temp"; + } else if (!strcmp(c, "current-sensor") && + !strcmp(l, "CPU Current")) { + ads->sens.ops = &smu_cpuamp_ops; + ads->sens.name = "cpu-current"; + } else if (!strcmp(c, "voltage-sensor") && + !strcmp(l, "CPU Voltage")) { + ads->sens.ops = &smu_cpuvolt_ops; + ads->sens.name = "cpu-voltage"; + } else if (!strcmp(c, "power-sensor") && + !strcmp(l, "Slots Power")) { + ads->sens.ops = &smu_slotspow_ops; + ads->sens.name = "slots-power"; + if (slotspow == NULL) { + DBG("wf: slotspow partition (%02x) not found\n", + SMU_SDB_SLOTSPOW_ID); + goto fail; + } + } else + goto fail; + + v = (u32 *)get_property(node, "reg", NULL); + if (v == NULL) + goto fail; + ads->reg = *v; + + if (wf_register_sensor(&ads->sens)) + goto fail; + return ads; + fail: + kfree(ads); + return NULL; +} + +/* + * SMU Power combo sensor object + */ + +struct smu_cpu_power_sensor { + struct list_head link; + struct wf_sensor *volts; + struct wf_sensor *amps; + int fake_volts : 1; + int quadratic : 1; + struct wf_sensor sens; +}; +#define to_smu_cpu_power(c) container_of(c, struct smu_cpu_power_sensor, sens) + +static struct smu_cpu_power_sensor *smu_cpu_power; + +static void smu_cpu_power_release(struct wf_sensor *sr) +{ + struct smu_cpu_power_sensor *pow = to_smu_cpu_power(sr); + + if (pow->volts) + wf_put_sensor(pow->volts); + if (pow->amps) + wf_put_sensor(pow->amps); + kfree(pow); +} + +static int smu_cpu_power_get(struct wf_sensor *sr, s32 *value) +{ + struct smu_cpu_power_sensor *pow = to_smu_cpu_power(sr); + s32 volts, amps, power; + u64 tmps, tmpa, tmpb; + int rc; + + rc = pow->amps->ops->get_value(pow->amps, &s); + if (rc) + return rc; + + if (pow->fake_volts) { + *value = amps * 12 - 0x30000; + return 0; + } + + rc = pow->volts->ops->get_value(pow->volts, &volts); + if (rc) + return rc; + + power = (s32)((((u64)volts) * ((u64)amps)) >> 16); + if (!pow->quadratic) { + *value = power; + return 0; + } + tmps = (((u64)power) * ((u64)power)) >> 16; + tmpa = ((u64)cpuvcp->power_quads[0]) * tmps; + tmpb = ((u64)cpuvcp->power_quads[1]) * ((u64)power); + *value = (tmpa >> 28) + (tmpb >> 28) + (cpuvcp->power_quads[2] >> 12); + + return 0; +} + +static struct wf_sensor_ops smu_cpu_power_ops = { + .get_value = smu_cpu_power_get, + .release = smu_cpu_power_release, + .owner = THIS_MODULE, +}; + + +static struct smu_cpu_power_sensor * +smu_cpu_power_create(struct wf_sensor *volts, struct wf_sensor *amps) +{ + struct smu_cpu_power_sensor *pow; + + pow = kmalloc(sizeof(struct smu_cpu_power_sensor), GFP_KERNEL); + if (pow == NULL) + return NULL; + pow->sens.ops = &smu_cpu_power_ops; + pow->sens.name = "cpu-power"; + + wf_get_sensor(volts); + pow->volts = volts; + wf_get_sensor(amps); + pow->amps = amps; + + /* Some early machines need a faked voltage */ + if (debugswitches && ((*debugswitches) & 0x80)) { + printk(KERN_INFO "windfarm: CPU Power sensor using faked" + " voltage !\n"); + pow->fake_volts = 1; + } else + pow->fake_volts = 0; + + /* Try to use quadratic transforms on PowerMac8,1 and 9,1 for now, + * I yet have to figure out what's up with 8,2 and will have to + * adjust for later, unless we can 100% trust the SDB partition... + */ + if ((machine_is_compatible("PowerMac8,1") || + machine_is_compatible("PowerMac8,2") || + machine_is_compatible("PowerMac9,1")) && + cpuvcp_version >= 2) { + pow->quadratic = 1; + DBG("windfarm: CPU Power using quadratic transform\n"); + } else + pow->quadratic = 0; + + if (wf_register_sensor(&pow->sens)) + goto fail; + return pow; + fail: + kfree(pow); + return NULL; +} + +static int smu_fetch_param_partitions(void) +{ + struct smu_sdbp_header *hdr; + + /* Get CPU voltage/current/power calibration data */ + hdr = smu_get_sdb_partition(SMU_SDB_CPUVCP_ID, NULL); + if (hdr == NULL) { + DBG("wf: cpuvcp partition (%02x) not found\n", + SMU_SDB_CPUVCP_ID); + return -ENODEV; + } + cpuvcp = (struct smu_sdbp_cpuvcp *)&hdr[1]; + /* Keep version around */ + cpuvcp_version = hdr->version; + + /* Get CPU diode calibration data */ + hdr = smu_get_sdb_partition(SMU_SDB_CPUDIODE_ID, NULL); + if (hdr == NULL) { + DBG("wf: cpudiode partition (%02x) not found\n", + SMU_SDB_CPUDIODE_ID); + return -ENODEV; + } + cpudiode = (struct smu_sdbp_cpudiode *)&hdr[1]; + + /* Get slots power calibration data if any */ + hdr = smu_get_sdb_partition(SMU_SDB_SLOTSPOW_ID, NULL); + if (hdr != NULL) + slotspow = (struct smu_sdbp_slotspow *)&hdr[1]; + + /* Get debug switches if any */ + hdr = smu_get_sdb_partition(SMU_SDB_DEBUG_SWITCHES_ID, NULL); + if (hdr != NULL) + debugswitches = (u8 *)&hdr[1]; + + return 0; +} + +static int __init smu_sensors_init(void) +{ + struct device_node *smu, *sensors, *s; + struct smu_ad_sensor *volt_sensor = NULL, *curr_sensor = NULL; + int rc; + + if (!smu_present()) + return -ENODEV; + + /* Get parameters partitions */ + rc = smu_fetch_param_partitions(); + if (rc) + return rc; + + smu = of_find_node_by_type(NULL, "smu"); + if (smu == NULL) + return -ENODEV; + + /* Look for sensors subdir */ + for (sensors = NULL; + (sensors = of_get_next_child(smu, sensors)) != NULL;) + if (!strcmp(sensors->name, "sensors")) + break; + + of_node_put(smu); + + /* Create basic sensors */ + for (s = NULL; + sensors && (s = of_get_next_child(sensors, s)) != NULL;) { + struct smu_ad_sensor *ads; + + ads = smu_ads_create(s); + if (ads == NULL) + continue; + list_add(&ads->link, &smu_ads); + /* keep track of cpu voltage & current */ + if (!strcmp(ads->sens.name, "cpu-voltage")) + volt_sensor = ads; + else if (!strcmp(ads->sens.name, "cpu-current")) + curr_sensor = ads; + } + + of_node_put(sensors); + + /* Create CPU power sensor if possible */ + if (volt_sensor && curr_sensor) + smu_cpu_power = smu_cpu_power_create(&volt_sensor->sens, + &curr_sensor->sens); + + return 0; +} + +static void __exit smu_sensors_exit(void) +{ + struct smu_ad_sensor *ads; + + /* dispose of power sensor */ + if (smu_cpu_power) + wf_unregister_sensor(&smu_cpu_power->sens); + + /* dispose of basic sensors */ + while (!list_empty(&smu_ads)) { + ads = list_entry(smu_ads.next, struct smu_ad_sensor, link); + list_del(&ads->link); + wf_unregister_sensor(&ads->sens); + } +} + + +module_init(smu_sensors_init); +module_exit(smu_sensors_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt "); +MODULE_DESCRIPTION("SMU sensor objects for PowerMacs thermal control"); +MODULE_LICENSE("GPL"); + -- cgit v0.10.2 From 21fe3301f11a93c4f18e8480ed08522559bf0a50 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 16:41:59 +1100 Subject: [PATCH] ppc: fix a bunch of warnings Building a PowerMac kernel with ARCH=powerpc causes a bunch of warnings, this fixes some of them Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 0d91961..6dc33d1 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -403,19 +403,19 @@ static int __init prom_next_node(phandle *nodep) } } -static int __init prom_getprop(phandle node, const char *pname, +static int inline prom_getprop(phandle node, const char *pname, void *value, size_t valuelen) { return call_prom("getprop", 4, 1, node, ADDR(pname), (u32)(unsigned long) value, (u32) valuelen); } -static int __init prom_getproplen(phandle node, const char *pname) +static int inline prom_getproplen(phandle node, const char *pname) { return call_prom("getproplen", 2, 1, node, ADDR(pname)); } -static int __init prom_setprop(phandle node, const char *pname, +static int inline prom_setprop(phandle node, const char *pname, void *value, size_t valuelen) { return call_prom("setprop", 4, 1, node, ADDR(pname), @@ -1408,8 +1408,9 @@ static int __init prom_find_machine_type(void) struct prom_t *_prom = &RELOC(prom); char compat[256]; int len, i = 0; +#ifdef CONFIG_PPC64 phandle rtas; - +#endif len = prom_getprop(_prom->root, "compatible", compat, sizeof(compat)-1); if (len > 0) { diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 751f5dd..9d4e07f 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -83,7 +84,7 @@ void call_rtas_display_status_delay(unsigned char c) while (width-- > 0) call_rtas_display_status(' '); width = 16; - udelay(500000); + mdelay(500); pending_newline = 1; } else { if (pending_newline) { diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index 9bc6cc6..7ebbc0f 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -2667,10 +2667,10 @@ powerbook_sleep_3400(void) asleep = 1; /* Put the CPU into sleep mode */ - asm volatile("mfspr %0,1008" : "=r" (hid0) :); + hid0 = mfspr(SPRN_HID0); hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP; - asm volatile("mtspr 1008,%0" : : "r" (hid0)); - _nmask_and_or_msr(0, MSR_POW | MSR_EE); + mtspr(SPRN_HID0, hid0); + mtmsr(mfmsr() | MSR_POW | MSR_EE); udelay(10); /* OK, we're awake again, start restoring things */ diff --git a/include/asm-powerpc/xmon.h b/include/asm-powerpc/xmon.h index 43f7129..ace2072 100644 --- a/include/asm-powerpc/xmon.h +++ b/include/asm-powerpc/xmon.h @@ -7,6 +7,7 @@ struct pt_regs; extern int xmon(struct pt_regs *excp); extern void xmon_printf(const char *fmt, ...); extern void xmon_init(int); +extern void xmon_map_scc(void); #endif #endif diff --git a/include/asm-ppc/btext.h b/include/asm-ppc/btext.h index 36c7640..ccaefab 100644 --- a/include/asm-ppc/btext.h +++ b/include/asm-ppc/btext.h @@ -17,18 +17,18 @@ extern unsigned long disp_BAT[2]; extern boot_infos_t disp_bi; extern int boot_text_mapped; -void btext_init(boot_infos_t *bi); -void btext_welcome(void); -void btext_prepare_BAT(void); -void btext_setup_display(int width, int height, int depth, int pitch, - unsigned long address); -void map_boot_text(void); -void btext_update_display(unsigned long phys, int width, int height, - int depth, int pitch); +extern void init_boot_display(void); +extern void btext_welcome(void); +extern void btext_prepare_BAT(void); +extern void btext_setup_display(int width, int height, int depth, int pitch, + unsigned long address); +extern void map_boot_text(void); +extern void btext_update_display(unsigned long phys, int width, int height, + int depth, int pitch); -void btext_drawchar(char c); -void btext_drawstring(const char *str); -void btext_drawhex(unsigned long v); +extern void btext_drawchar(char c); +extern void btext_drawstring(const char *str); +extern void btext_drawhex(unsigned long v); #endif /* __KERNEL__ */ #endif /* __PPC_BTEXT_H */ -- cgit v0.10.2 From 7b007de8a90604000329154e87d269db3427d099 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 16:43:44 +1100 Subject: [PATCH] ppc: Fix ARCH=ppc build with xmon xmon() prototype is inconsistent between ARCH=ppc and ARCH=powerpc, thus causing ARCH=ppc build breakage. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c index 42d980e..9dbc4d2 100644 --- a/arch/ppc/kernel/traps.c +++ b/arch/ppc/kernel/traps.c @@ -49,7 +49,7 @@ extern int xmon_sstep(struct pt_regs *regs); extern int xmon_iabr_match(struct pt_regs *regs); extern int xmon_dabr_match(struct pt_regs *regs); -void (*debugger)(struct pt_regs *regs) = xmon; +int (*debugger)(struct pt_regs *regs) = xmon; int (*debugger_bpt)(struct pt_regs *regs) = xmon_bpt; int (*debugger_sstep)(struct pt_regs *regs) = xmon_sstep; int (*debugger_iabr_match)(struct pt_regs *regs) = xmon_iabr_match; @@ -57,7 +57,7 @@ int (*debugger_dabr_match)(struct pt_regs *regs) = xmon_dabr_match; void (*debugger_fault_handler)(struct pt_regs *regs); #else #ifdef CONFIG_KGDB -void (*debugger)(struct pt_regs *regs); +int (*debugger)(struct pt_regs *regs); int (*debugger_bpt)(struct pt_regs *regs); int (*debugger_sstep)(struct pt_regs *regs); int (*debugger_iabr_match)(struct pt_regs *regs); diff --git a/arch/ppc/xmon/xmon.c b/arch/ppc/xmon/xmon.c index 66bfaa3..2b483b4 100644 --- a/arch/ppc/xmon/xmon.c +++ b/arch/ppc/xmon/xmon.c @@ -220,8 +220,7 @@ static void get_tb(unsigned *p) p[1] = lo; } -void -xmon(struct pt_regs *excp) +int xmon(struct pt_regs *excp) { struct pt_regs regs; int msr, cmd; @@ -290,6 +289,8 @@ xmon(struct pt_regs *excp) #endif /* CONFIG_SMP */ set_msr(msr); /* restore interrupt enable */ get_tb(start_tb[smp_processor_id()]); + + return cmd != 'X'; } irqreturn_t diff --git a/include/asm-ppc/kgdb.h b/include/asm-ppc/kgdb.h index 1d3c927..b617dac 100644 --- a/include/asm-ppc/kgdb.h +++ b/include/asm-ppc/kgdb.h @@ -31,7 +31,7 @@ extern void breakpoint(void); /* For taking exceptions * these are defined in traps.c */ -extern void (*debugger)(struct pt_regs *regs); +extern int (*debugger)(struct pt_regs *regs); extern int (*debugger_bpt)(struct pt_regs *regs); extern int (*debugger_sstep)(struct pt_regs *regs); extern int (*debugger_iabr_match)(struct pt_regs *regs); -- cgit v0.10.2 From 42596ec5edc8efb9e24397ef656df7ebb2c4f8d5 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 7 Nov 2005 16:57:33 +1100 Subject: [PATCH] ppc: Fix PowerBook HD led on ARCH=powerpc The PowerBook HD led code uses obsoletes device-tree accessors which do not work anymore for getting the root of the tree. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c index d8c3d8e..b3e65a6 100644 --- a/drivers/ide/ppc/pmac.c +++ b/drivers/ide/ppc/pmac.c @@ -497,16 +497,19 @@ pmu_hd_blink_init(void) if (pmu_get_model() != PMU_KEYLARGO_BASED) return 0; - dt = find_devices("device-tree"); + dt = of_find_node_by_path("/"); if (dt == NULL) return 0; model = (const char *)get_property(dt, "model", NULL); if (model == NULL) return 0; if (strncmp(model, "PowerBook", strlen("PowerBook")) != 0 && - strncmp(model, "iBook", strlen("iBook")) != 0) + strncmp(model, "iBook", strlen("iBook")) != 0) { + of_node_put(dt); return 0; - + } + of_node_put(dt); + pmu_blink_on.complete = 1; pmu_blink_off.complete = 1; spin_lock_init(&pmu_blink_lock); -- cgit v0.10.2 From bcb3557694d4e880051795ad97d609d255bcb658 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 7 Nov 2005 17:43:07 +1100 Subject: [PATCH] ppc64: fix Memory: summary line On ppc64 we end up with a negative value for the data size in the memory boot message: Memory: 2035560k/2097152k available (5792k kernel code, 89564k reserved, 18014398509481632k data, 870k bss, 352k init) It turns out the section ordering of the linker script is different on ppc32 and ppc64, so just count data as _edata - _sdata which should work on both. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 7faa46b..6f55efd 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -358,7 +358,7 @@ void __init mem_init(void) } codesize = (unsigned long)&_sdata - (unsigned long)&_stext; - datasize = (unsigned long)&__init_begin - (unsigned long)&_sdata; + datasize = (unsigned long)&_edata - (unsigned long)&_sdata; initsize = (unsigned long)&__init_end - (unsigned long)&__init_begin; bsssize = (unsigned long)&__bss_stop - (unsigned long)&__bss_start; -- cgit v0.10.2 From cb09cff30ad22408eea9b2785555af2d2b0ac1bd Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 7 Nov 2005 18:43:56 +1100 Subject: [PATCH] ppc64: fix oprofile sample bit handling Oprofile was hardwiring the MMCRA sample bit to 1 but on newer cpus (eg POWER5) we want to vary it based on the group being sampled. Add a temporary workaround until people update their oprofile userspace. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/oprofile/op_model_power4.c b/arch/powerpc/oprofile/op_model_power4.c index 8864493..c4ee547 100644 --- a/arch/powerpc/oprofile/op_model_power4.c +++ b/arch/powerpc/oprofile/op_model_power4.c @@ -17,6 +17,7 @@ #include #include #include +#include #define dbg(args...) @@ -81,6 +82,26 @@ static void power4_reg_setup(struct op_counter_config *ctr, extern void ppc64_enable_pmcs(void); +/* + * Older CPUs require the MMCRA sample bit to be always set, but newer + * CPUs only want it set for some groups. Eventually we will remove all + * knowledge of this bit in the kernel, oprofile userspace should be + * setting it when required. + * + * In order to keep current installations working we force the bit for + * those older CPUs. Once everyone has updated their oprofile userspace we + * can remove this hack. + */ +static inline int mmcra_must_set_sample(void) +{ + if (__is_processor(PV_POWER4) || __is_processor(PV_POWER4p) || + __is_processor(PV_970) || __is_processor(PV_970FX) || + __is_processor(PV_970MP)) + return 1; + + return 0; +} + static void power4_cpu_setup(void *unused) { unsigned int mmcr0 = mmcr0_val; @@ -98,7 +119,8 @@ static void power4_cpu_setup(void *unused) mtspr(SPRN_MMCR1, mmcr1_val); - mmcra |= MMCRA_SAMPLE_ENABLE; + if (mmcra_must_set_sample()) + mmcra |= MMCRA_SAMPLE_ENABLE; mtspr(SPRN_MMCRA, mmcra); dbg("setup on cpu %d, mmcr0 %lx\n", smp_processor_id(), -- cgit v0.10.2 From 570142ca37248291c03df9852a5a0ce97f756464 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 7 Nov 2005 19:05:31 +1100 Subject: [PATCH] ppc64: remove some direct xmon calls Even though we can enable and disable xmon at runtime now, there are a few places in the merge tree that call xmon and xmon_printf directly. In the case below we call die() which will call xmon if it is enabled. Also remove an unnecessary include of xmon.h in smp.c. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 1794a69..5c330c3 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -40,7 +40,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 07e5ee4..32f2158 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -39,7 +39,6 @@ #include #include #include -#include #include #ifdef CONFIG_PPC32 #include @@ -748,22 +747,12 @@ static int check_bug_trap(struct pt_regs *regs) return 0; if (bug->line & BUG_WARNING_TRAP) { /* this is a WARN_ON rather than BUG/BUG_ON */ -#ifdef CONFIG_XMON - xmon_printf(KERN_ERR "Badness in %s at %s:%ld\n", - bug->function, bug->file, - bug->line & ~BUG_WARNING_TRAP); -#endif /* CONFIG_XMON */ printk(KERN_ERR "Badness in %s at %s:%ld\n", bug->function, bug->file, bug->line & ~BUG_WARNING_TRAP); dump_stack(); return 1; } -#ifdef CONFIG_XMON - xmon_printf(KERN_CRIT "kernel BUG in %s at %s:%ld!\n", - bug->function, bug->file, bug->line); - xmon(regs); -#endif /* CONFIG_XMON */ printk(KERN_CRIT "kernel BUG in %s at %s:%ld!\n", bug->function, bug->file, bug->line); -- cgit v0.10.2 From 0286486783a75ef991df3ee250917efb55df75b3 Mon Sep 17 00:00:00 2001 From: Mike Kravetz Date: Mon, 7 Nov 2005 13:48:59 -0800 Subject: [PATCH] Memory Add Fixes for ppc64 On Tue, Nov 08, 2005 at 08:12:56AM +1100, Benjamin Herrenschmidt wrote: > Yes, the MAX_ORDER should be different indeed. But can Kconfig do that ? > That is have the default value be different based on a Kconfig option ? > I don't see that ... We may have to do things differently here... This seems to be done in other parts of the Kconfig file. Using those as an example, this should keep the MAX_ORDER block size at 16MB. Signed-off-by: Mike Kravetz Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3ac9195..1493c78 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -492,6 +492,7 @@ source "fs/Kconfig.binfmt" config FORCE_MAX_ZONEORDER int depends on PPC64 + default "9" if PPC_64K_PAGES default "13" config MATH_EMULATION diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig index 94a8127..2955234 100644 --- a/arch/ppc64/Kconfig +++ b/arch/ppc64/Kconfig @@ -56,6 +56,7 @@ config PPC_STD_MMU # max order + 1 config FORCE_MAX_ZONEORDER int + default "9" if PPC_64K_PAGES default "13" source "init/Kconfig" -- cgit v0.10.2 From 22358ea8e1e88d65b073c3d2bb85d8c4e3bd44c1 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Tue, 8 Nov 2005 12:13:38 +1100 Subject: powerpc: Fix typo in pmac_cpufreq_resume Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c index 7960a7b..56fd4e0 100644 --- a/arch/powerpc/platforms/powermac/cpufreq_32.c +++ b/arch/powerpc/platforms/powermac/cpufreq_32.c @@ -462,7 +462,7 @@ static int pmac_cpufreq_resume(struct cpufreq_policy *policy) /* If we resume, first check if we have a get() function */ if (get_speed_proc) cur_freq = get_speed_proc(); - else) + else cur_freq = 0; /* We don't, hrm... we don't really know our speed here, best -- cgit v0.10.2 From 3fb62b5148bd9df6b8a734988f5cf330251abdb4 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Tue, 8 Nov 2005 12:14:50 +1100 Subject: macintosh: Always export pmu_[un]register_sleep_notifier if CONFIG_PM set This fixes a build error when building the pmac sound driver as a module for 64-bit powermacs. Signed-off-by: Paul Mackerras diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index 7ebbc0f..5640435 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -2053,6 +2053,7 @@ pmu_register_sleep_notifier(struct pmu_sleep_notifier *n) __list_add(&n->list, list->prev, list); return 0; } +EXPORT_SYMBOL(pmu_register_sleep_notifier); int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n) @@ -2063,6 +2064,7 @@ pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n) n->list.next = NULL; return 0; } +EXPORT_SYMBOL(pmu_unregister_sleep_notifier); #endif /* CONFIG_PM */ #if defined(CONFIG_PM) && defined(CONFIG_PPC32) @@ -3139,8 +3141,6 @@ EXPORT_SYMBOL(pmu_i2c_stdsub_write); EXPORT_SYMBOL(pmu_i2c_simple_read); EXPORT_SYMBOL(pmu_i2c_simple_write); #if defined(CONFIG_PM) && defined(CONFIG_PPC32) -EXPORT_SYMBOL(pmu_register_sleep_notifier); -EXPORT_SYMBOL(pmu_unregister_sleep_notifier); EXPORT_SYMBOL(pmu_enable_irled); EXPORT_SYMBOL(pmu_battery_count); EXPORT_SYMBOL(pmu_batteries); -- cgit v0.10.2 From 515729ece1e515546e9f49713b012cfbc41747ed Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Tue, 8 Nov 2005 12:15:36 +1100 Subject: powermac: Use a spinlock in swim3.c (floppy driver) instead of cli Signed-off-by: Paul Mackerras diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index e425ad3..af7cb2b 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -176,6 +177,7 @@ struct swim3 { struct floppy_state { enum swim_state state; + spinlock_t lock; struct swim3 __iomem *swim3; /* hardware registers */ struct dbdma_regs __iomem *dma; /* DMA controller registers */ int swim3_intr; /* interrupt number for SWIM3 */ @@ -304,7 +306,6 @@ static void do_fd_request(request_queue_t * q) #endif /* CONFIG_PMAC_MEDIABAY */ start_request(&floppy_states[i]); } - sti(); } static void start_request(struct floppy_state *fs) @@ -370,7 +371,7 @@ static void set_timeout(struct floppy_state *fs, int nticks, { unsigned long flags; - save_flags(flags); cli(); + spin_lock_irqsave(&fs->lock, flags); if (fs->timeout_pending) del_timer(&fs->timeout); fs->timeout.expires = jiffies + nticks; @@ -378,7 +379,7 @@ static void set_timeout(struct floppy_state *fs, int nticks, fs->timeout.data = (unsigned long) fs; add_timer(&fs->timeout); fs->timeout_pending = 1; - restore_flags(flags); + spin_unlock_irqrestore(&fs->lock, flags); } static inline void scan_track(struct floppy_state *fs) @@ -790,14 +791,13 @@ static int grab_drive(struct floppy_state *fs, enum swim_state state, { unsigned long flags; - save_flags(flags); - cli(); + spin_lock_irqsave(&fs->lock, flags); if (fs->state != idle) { ++fs->wanted; while (fs->state != available) { if (interruptible && signal_pending(current)) { --fs->wanted; - restore_flags(flags); + spin_unlock_irqrestore(&fs->lock, flags); return -EINTR; } interruptible_sleep_on(&fs->wait); @@ -805,7 +805,7 @@ static int grab_drive(struct floppy_state *fs, enum swim_state state, --fs->wanted; } fs->state = state; - restore_flags(flags); + spin_unlock_irqrestore(&fs->lock, flags); return 0; } @@ -813,11 +813,10 @@ static void release_drive(struct floppy_state *fs) { unsigned long flags; - save_flags(flags); - cli(); + spin_lock_irqsave(&fs->lock, flags); fs->state = idle; start_request(fs); - restore_flags(flags); + spin_unlock_irqrestore(&fs->lock, flags); } static int fd_eject(struct floppy_state *fs) @@ -1109,6 +1108,7 @@ static int swim3_add_device(struct device_node *swim) pmac_call_feature(PMAC_FTR_SWIM3_ENABLE, swim, 0, 1); memset(fs, 0, sizeof(*fs)); + spin_lock_init(&fs->lock); fs->state = idle; fs->swim3 = (struct swim3 __iomem *) ioremap(swim->addrs[0].address, 0x200); -- cgit v0.10.2 From b354cab0763080df3735dcd0c64a545f266cc9e2 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Tue, 8 Nov 2005 12:20:34 +1100 Subject: powerpc: merge ide.h This is very simple with it being almost all ppc32 with just a couple of common defines. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras diff --git a/include/asm-powerpc/ide.h b/include/asm-powerpc/ide.h new file mode 100644 index 0000000..da5f640 --- /dev/null +++ b/include/asm-powerpc/ide.h @@ -0,0 +1,83 @@ +/* + * Copyright (C) 1994-1996 Linus Torvalds & authors + * + * This file contains the powerpc architecture specific IDE code. + */ +#ifndef _ASM_POWERPC_IDE_H +#define _ASM_POWERPC_IDE_H + +#ifdef __KERNEL__ + +#ifndef __powerpc64__ +#include +#include +#endif + +#ifndef MAX_HWIFS +#ifdef __powerpc64__ +#define MAX_HWIFS 10 +#else +#define MAX_HWIFS 8 +#endif +#endif + +#ifndef __powerpc64__ +#include +#include +#include +#include + +extern void __ide_mm_insw(void __iomem *port, void *addr, u32 count); +extern void __ide_mm_outsw(void __iomem *port, void *addr, u32 count); +extern void __ide_mm_insl(void __iomem *port, void *addr, u32 count); +extern void __ide_mm_outsl(void __iomem *port, void *addr, u32 count); + +struct ide_machdep_calls { + int (*default_irq)(unsigned long base); + unsigned long (*default_io_base)(int index); + void (*ide_init_hwif)(hw_regs_t *hw, + unsigned long data_port, + unsigned long ctrl_port, + int *irq); +}; + +extern struct ide_machdep_calls ppc_ide_md; + +#undef SUPPORT_SLOW_DATA_PORTS +#define SUPPORT_SLOW_DATA_PORTS 0 + +#define IDE_ARCH_OBSOLETE_DEFAULTS + +static __inline__ int ide_default_irq(unsigned long base) +{ + if (ppc_ide_md.default_irq) + return ppc_ide_md.default_irq(base); + return 0; +} + +static __inline__ unsigned long ide_default_io_base(int index) +{ + if (ppc_ide_md.default_io_base) + return ppc_ide_md.default_io_base(index); + return 0; +} + +#ifdef CONFIG_PCI +#define ide_init_default_irq(base) (0) +#else +#define ide_init_default_irq(base) ide_default_irq(base) +#endif + +#if (defined CONFIG_APUS || defined CONFIG_BLK_DEV_MPC8xx_IDE ) +#define IDE_ARCH_ACK_INTR 1 +#define ide_ack_intr(hwif) (hwif->hw.ack_intr ? hwif->hw.ack_intr(hwif) : 1) +#endif + +#endif /* __powerpc64__ */ + +#define IDE_ARCH_OBSOLETE_INIT +#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */ + +#endif /* __KERNEL__ */ + +#endif /* _ASM_POWERPC_IDE_H */ diff --git a/include/asm-ppc/ide.h b/include/asm-ppc/ide.h deleted file mode 100644 index 7d6e659..0000000 --- a/include/asm-ppc/ide.h +++ /dev/null @@ -1,78 +0,0 @@ -/* - * linux/include/asm-ppc/ide.h - * - * Copyright (C) 1994-1996 Linus Torvalds & authors */ - -/* - * This file contains the ppc architecture specific IDE code. - */ - -#ifndef __ASMPPC_IDE_H -#define __ASMPPC_IDE_H - -#ifdef __KERNEL__ - -#include -#include - -#ifndef MAX_HWIFS -#define MAX_HWIFS 8 -#endif - -#include -#include -#include -#include - -extern void __ide_mm_insw(void __iomem *port, void *addr, u32 count); -extern void __ide_mm_outsw(void __iomem *port, void *addr, u32 count); -extern void __ide_mm_insl(void __iomem *port, void *addr, u32 count); -extern void __ide_mm_outsl(void __iomem *port, void *addr, u32 count); - -struct ide_machdep_calls { - int (*default_irq)(unsigned long base); - unsigned long (*default_io_base)(int index); - void (*ide_init_hwif)(hw_regs_t *hw, - unsigned long data_port, - unsigned long ctrl_port, - int *irq); -}; - -extern struct ide_machdep_calls ppc_ide_md; - -#undef SUPPORT_SLOW_DATA_PORTS -#define SUPPORT_SLOW_DATA_PORTS 0 - -#define IDE_ARCH_OBSOLETE_DEFAULTS - -static __inline__ int ide_default_irq(unsigned long base) -{ - if (ppc_ide_md.default_irq) - return ppc_ide_md.default_irq(base); - return 0; -} - -static __inline__ unsigned long ide_default_io_base(int index) -{ - if (ppc_ide_md.default_io_base) - return ppc_ide_md.default_io_base(index); - return 0; -} - -#define IDE_ARCH_OBSOLETE_INIT -#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */ - -#ifdef CONFIG_PCI -#define ide_init_default_irq(base) (0) -#else -#define ide_init_default_irq(base) ide_default_irq(base) -#endif - -#if (defined CONFIG_APUS || defined CONFIG_BLK_DEV_MPC8xx_IDE ) -#define IDE_ARCH_ACK_INTR 1 -#define ide_ack_intr(hwif) (hwif->hw.ack_intr ? hwif->hw.ack_intr(hwif) : 1) -#endif - -#endif /* __KERNEL__ */ - -#endif /* __ASMPPC_IDE_H */ diff --git a/include/asm-ppc64/ide.h b/include/asm-ppc64/ide.h deleted file mode 100644 index 0aae1c5..0000000 --- a/include/asm-ppc64/ide.h +++ /dev/null @@ -1,30 +0,0 @@ -/* - * linux/include/asm-ppc/ide.h - * - * Copyright (C) 1994-1996 Linus Torvalds & authors - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -/* - * This file contains the ppc64 architecture specific IDE code. - */ - -#ifndef __ASMPPC64_IDE_H -#define __ASMPPC64_IDE_H - -#ifdef __KERNEL__ - -#ifndef MAX_HWIFS -# define MAX_HWIFS 10 -#endif - -#define IDE_ARCH_OBSOLETE_INIT -#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */ - -#endif /* __KERNEL__ */ - -#endif /* __ASMPPC64_IDE_H */ -- cgit v0.10.2 From 76c8e25b905f99be5ddbe999597ba7c2c33ec64b Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 8 Nov 2005 11:21:05 +1100 Subject: [PATCH] ppc64: Fix the lazy icache/dcache code for non-RAM pages For some stupid reason I can't explain (brown paper bag is at hand), I removed the check pfn_valid() in the code that does the icache/dcache coherency on POWER4 and later. That causes us to eventually try to access non existing struct page when hashing in IO pages. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 3d83c3b..22e4748 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -507,6 +507,9 @@ unsigned int hash_page_do_lazy_icache(unsigned int pp, pte_t pte, int trap) { struct page *page; + if (!pfn_valid(pte_pfn(pte))) + return pp; + page = pte_page(pte); /* page is dirty */ -- cgit v0.10.2