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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-06 15:12:08 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-06 15:12:08 (GMT) |
commit | f84d9fa86820b3074a8c143444a6932c0c0fd019 (patch) | |
tree | 5a255baa763c8d895ab3dc5feee03c288e0f0810 /arch | |
parent | 82fa407da081d05323171577d86f62d77df17465 (diff) | |
parent | 98e98eb6a8a179a444a30d903714fab356726155 (diff) | |
download | linux-f84d9fa86820b3074a8c143444a6932c0c0fd019.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc updates from David Miller:
"Besides some cleanups the major thing here is supporting relaxed
ordering PCIe transactions on newer sparc64 machines, from Chris
Hyser"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: fixing ident and beautifying code
sparc64: Enable setting "relaxed ordering" in IOMMU mappings
sparc64: Enable PCI IOMMU version 2 API
sparc: migrate exception table users off module.h and onto extable.h
Diffstat (limited to 'arch')
-rw-r--r-- | arch/sparc/include/asm/hypervisor.h | 1 | ||||
-rw-r--r-- | arch/sparc/kernel/kprobes.c | 2 | ||||
-rw-r--r-- | arch/sparc/kernel/pci_sun4v.c | 52 | ||||
-rw-r--r-- | arch/sparc/kernel/traps_64.c | 2 | ||||
-rw-r--r-- | arch/sparc/kernel/unaligned_64.c | 2 | ||||
-rw-r--r-- | arch/sparc/mm/fault_64.c | 2 | ||||
-rw-r--r-- | arch/sparc/mm/init_64.c | 2 | ||||
-rw-r--r-- | arch/sparc/prom/ranges.c | 52 |
8 files changed, 71 insertions, 44 deletions
diff --git a/arch/sparc/include/asm/hypervisor.h b/arch/sparc/include/asm/hypervisor.h index f5b6537..666d5ba 100644 --- a/arch/sparc/include/asm/hypervisor.h +++ b/arch/sparc/include/asm/hypervisor.h @@ -1744,6 +1744,7 @@ unsigned long sun4v_vintr_set_target(unsigned long dev_handle, #define HV_PCI_MAP_ATTR_READ 0x01 #define HV_PCI_MAP_ATTR_WRITE 0x02 +#define HV_PCI_MAP_ATTR_RELAXED_ORDER 0x04 #define HV_PCI_DEVICE_BUILD(b,d,f) \ ((((b) & 0xff) << 16) | \ diff --git a/arch/sparc/kernel/kprobes.c b/arch/sparc/kernel/kprobes.c index cd83be5..b0377db 100644 --- a/arch/sparc/kernel/kprobes.c +++ b/arch/sparc/kernel/kprobes.c @@ -5,7 +5,7 @@ #include <linux/kernel.h> #include <linux/kprobes.h> -#include <linux/module.h> +#include <linux/extable.h> #include <linux/kdebug.h> #include <linux/slab.h> #include <linux/context_tracking.h> diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 61c6f93..db57d8a 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -30,8 +30,19 @@ #define DRIVER_NAME "pci_sun4v" #define PFX DRIVER_NAME ": " -static unsigned long vpci_major = 1; -static unsigned long vpci_minor = 1; +static unsigned long vpci_major; +static unsigned long vpci_minor; + +struct vpci_version { + unsigned long major; + unsigned long minor; +}; + +/* Ordered from largest major to lowest */ +static struct vpci_version vpci_versions[] = { + { .major = 2, .minor = 0 }, + { .major = 1, .minor = 1 }, +}; #define PGLIST_NENTS (PAGE_SIZE / sizeof(u64)) @@ -67,6 +78,10 @@ static long iommu_batch_flush(struct iommu_batch *p) u64 *pglist = p->pglist; unsigned long npages = p->npages; + /* VPCI maj=1, min=[0,1] only supports read and write */ + if (vpci_major < 2) + prot &= (HV_PCI_MAP_ATTR_READ | HV_PCI_MAP_ATTR_WRITE); + while (npages != 0) { long num; @@ -133,6 +148,7 @@ static void *dma_4v_alloc_coherent(struct device *dev, size_t size, unsigned long attrs) { unsigned long flags, order, first_page, npages, n; + unsigned long prot = 0; struct iommu *iommu; struct page *page; void *ret; @@ -146,6 +162,9 @@ static void *dma_4v_alloc_coherent(struct device *dev, size_t size, npages = size >> IO_PAGE_SHIFT; + if (attrs & DMA_ATTR_WEAK_ORDERING) + prot = HV_PCI_MAP_ATTR_RELAXED_ORDER; + nid = dev->archdata.numa_node; page = alloc_pages_node(nid, gfp, order); if (unlikely(!page)) @@ -169,7 +188,7 @@ static void *dma_4v_alloc_coherent(struct device *dev, size_t size, local_irq_save(flags); iommu_batch_start(dev, - (HV_PCI_MAP_ATTR_READ | + (HV_PCI_MAP_ATTR_READ | prot | HV_PCI_MAP_ATTR_WRITE), entry); @@ -266,6 +285,9 @@ static dma_addr_t dma_4v_map_page(struct device *dev, struct page *page, if (direction != DMA_TO_DEVICE) prot |= HV_PCI_MAP_ATTR_WRITE; + if (attrs & DMA_ATTR_WEAK_ORDERING) + prot |= HV_PCI_MAP_ATTR_RELAXED_ORDER; + local_irq_save(flags); iommu_batch_start(dev, prot, entry); @@ -344,6 +366,9 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist, if (direction != DMA_TO_DEVICE) prot |= HV_PCI_MAP_ATTR_WRITE; + if (attrs & DMA_ATTR_WEAK_ORDERING) + prot |= HV_PCI_MAP_ATTR_RELAXED_ORDER; + outs = s = segstart = &sglist[0]; outcount = 1; incount = nelems; @@ -907,22 +932,27 @@ static int pci_sun4v_probe(struct platform_device *op) struct device_node *dp; struct iommu *iommu; u32 devhandle; - int i, err; + int i, err = -ENODEV; dp = op->dev.of_node; if (!hvapi_negotiated++) { - err = sun4v_hvapi_register(HV_GRP_PCI, - vpci_major, - &vpci_minor); + for (i = 0; i < ARRAY_SIZE(vpci_versions); i++) { + vpci_major = vpci_versions[i].major; + vpci_minor = vpci_versions[i].minor; + + err = sun4v_hvapi_register(HV_GRP_PCI, vpci_major, + &vpci_minor); + if (!err) + break; + } if (err) { - printk(KERN_ERR PFX "Could not register hvapi, " - "err=%d\n", err); + pr_err(PFX "Could not register hvapi, err=%d\n", err); return err; } - printk(KERN_INFO PFX "Registered hvapi major[%lu] minor[%lu]\n", - vpci_major, vpci_minor); + pr_info(PFX "Registered hvapi major[%lu] minor[%lu]\n", + vpci_major, vpci_minor); dma_ops = &sun4v_dma_ops; } diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index d21cd62..4094a51 100644 --- a/arch/sparc/kernel/traps_64.c +++ b/arch/sparc/kernel/traps_64.c @@ -8,7 +8,7 @@ * I like traps on v9, :)))) */ -#include <linux/module.h> +#include <linux/extable.h> #include <linux/sched.h> #include <linux/linkage.h> #include <linux/kernel.h> diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c index 9aacb91..52c00d9 100644 --- a/arch/sparc/kernel/unaligned_64.c +++ b/arch/sparc/kernel/unaligned_64.c @@ -11,7 +11,7 @@ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/mm.h> -#include <linux/module.h> +#include <linux/extable.h> #include <asm/asi.h> #include <asm/ptrace.h> #include <asm/pstate.h> diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c index 3f291d8..643c149 100644 --- a/arch/sparc/mm/fault_64.c +++ b/arch/sparc/mm/fault_64.c @@ -14,7 +14,7 @@ #include <linux/mman.h> #include <linux/signal.h> #include <linux/mm.h> -#include <linux/module.h> +#include <linux/extable.h> #include <linux/init.h> #include <linux/perf_event.h> #include <linux/interrupt.h> diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 7ac6b62..439784b 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -5,7 +5,7 @@ * Copyright (C) 1997-1999 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ -#include <linux/module.h> +#include <linux/extable.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/string.h> diff --git a/arch/sparc/prom/ranges.c b/arch/sparc/prom/ranges.c index ad143c1..6d8dc2a 100644 --- a/arch/sparc/prom/ranges.c +++ b/arch/sparc/prom/ranges.c @@ -16,9 +16,8 @@ static struct linux_prom_ranges promlib_obio_ranges[PROMREG_MAX]; static int num_obio_ranges; /* Adjust register values based upon the ranges parameters. */ -static void -prom_adjust_regs(struct linux_prom_registers *regp, int nregs, - struct linux_prom_ranges *rangep, int nranges) +static void prom_adjust_regs(struct linux_prom_registers *regp, int nregs, + struct linux_prom_ranges *rangep, int nranges) { int regc, rngc; @@ -34,33 +33,30 @@ prom_adjust_regs(struct linux_prom_registers *regp, int nregs, } } -static void -prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1, - struct linux_prom_ranges *ranges2, int nranges2) +static void prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1, + struct linux_prom_ranges *ranges2, int nranges2) { int rng1c, rng2c; - for(rng1c=0; rng1c < nranges1; rng1c++) { - for(rng2c=0; rng2c < nranges2; rng2c++) - if(ranges1[rng1c].ot_parent_space == ranges2[rng2c].ot_child_space && + for (rng1c = 0; rng1c < nranges1; rng1c++) { + for (rng2c = 0; rng2c < nranges2; rng2c++) + if (ranges1[rng1c].ot_parent_space == ranges2[rng2c].ot_child_space && ranges1[rng1c].ot_parent_base >= ranges2[rng2c].ot_child_base && ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base > 0U) break; - if(rng2c == nranges2) /* oops */ + if (rng2c == nranges2) /* oops */ prom_printf("adjust_ranges: Could not find matching bus type...\n"); else if (ranges1[rng1c].ot_parent_base + ranges1[rng1c].or_size > ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size) - ranges1[rng1c].or_size = - ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base; + ranges1[rng1c].or_size = ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base; ranges1[rng1c].ot_parent_space = ranges2[rng2c].ot_parent_space; ranges1[rng1c].ot_parent_base += ranges2[rng2c].ot_parent_base; } } /* Apply probed obio ranges to registers passed, if no ranges return. */ -void -prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs) +void prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs) { - if(num_obio_ranges) + if (num_obio_ranges) prom_adjust_regs(regs, nregs, promlib_obio_ranges, num_obio_ranges); } EXPORT_SYMBOL(prom_apply_obio_ranges); @@ -76,40 +72,40 @@ void __init prom_ranges_init(void) node = prom_getchild(prom_root_node); obio_node = prom_searchsiblings(node, "obio"); - if(obio_node) { + if (obio_node) { success = prom_getproperty(obio_node, "ranges", (char *) promlib_obio_ranges, sizeof(promlib_obio_ranges)); - if(success != -1) - num_obio_ranges = (success/sizeof(struct linux_prom_ranges)); + if (success != -1) + num_obio_ranges = (success / sizeof(struct linux_prom_ranges)); } - if(num_obio_ranges) + if (num_obio_ranges) prom_printf("PROMLIB: obio_ranges %d\n", num_obio_ranges); } void prom_apply_generic_ranges(phandle node, phandle parent, - struct linux_prom_registers *regs, int nregs) + struct linux_prom_registers *regs, int nregs) { int success; int num_ranges; struct linux_prom_ranges ranges[PROMREG_MAX]; - + success = prom_getproperty(node, "ranges", (char *) ranges, - sizeof (ranges)); + sizeof(ranges)); if (success != -1) { - num_ranges = (success/sizeof(struct linux_prom_ranges)); + num_ranges = (success / sizeof(struct linux_prom_ranges)); if (parent) { struct linux_prom_ranges parent_ranges[PROMREG_MAX]; int num_parent_ranges; - + success = prom_getproperty(parent, "ranges", - (char *) parent_ranges, - sizeof (parent_ranges)); + (char *) parent_ranges, + sizeof(parent_ranges)); if (success != -1) { - num_parent_ranges = (success/sizeof(struct linux_prom_ranges)); - prom_adjust_ranges (ranges, num_ranges, parent_ranges, num_parent_ranges); + num_parent_ranges = (success / sizeof(struct linux_prom_ranges)); + prom_adjust_ranges(ranges, num_ranges, parent_ranges, num_parent_ranges); } } prom_adjust_regs(regs, nregs, ranges, num_ranges); |