diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-clps7500/core.c | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mach-clps7500/core.c')
-rw-r--r-- | arch/arm/mach-clps7500/core.c | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/arch/arm/mach-clps7500/core.c b/arch/arm/mach-clps7500/core.c new file mode 100644 index 0000000..fdfeded --- /dev/null +++ b/arch/arm/mach-clps7500/core.c @@ -0,0 +1,374 @@ +/* + * linux/arch/arm/mach-clps7500/core.c + * + * Copyright (C) 1998 Russell King + * Copyright (C) 1999 Nexus Electronics Ltd + * + * Extra MM routines for CL7500 architecture + */ +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/serial_8250.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> +#include <asm/mach/time.h> + +#include <asm/hardware.h> +#include <asm/hardware/iomd.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/mach-types.h> + +static void cl7500_ack_irq_a(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << irq; + val = iomd_readb(IOMD_IRQMASKA); + iomd_writeb(val & ~mask, IOMD_IRQMASKA); + iomd_writeb(mask, IOMD_IRQCLRA); +} + +static void cl7500_mask_irq_a(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << irq; + val = iomd_readb(IOMD_IRQMASKA); + iomd_writeb(val & ~mask, IOMD_IRQMASKA); +} + +static void cl7500_unmask_irq_a(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << irq; + val = iomd_readb(IOMD_IRQMASKA); + iomd_writeb(val | mask, IOMD_IRQMASKA); +} + +static struct irqchip clps7500_a_chip = { + .ack = cl7500_ack_irq_a, + .mask = cl7500_mask_irq_a, + .unmask = cl7500_unmask_irq_a, +}; + +static void cl7500_mask_irq_b(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_IRQMASKB); + iomd_writeb(val & ~mask, IOMD_IRQMASKB); +} + +static void cl7500_unmask_irq_b(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_IRQMASKB); + iomd_writeb(val | mask, IOMD_IRQMASKB); +} + +static struct irqchip clps7500_b_chip = { + .ack = cl7500_mask_irq_b, + .mask = cl7500_mask_irq_b, + .unmask = cl7500_unmask_irq_b, +}; + +static void cl7500_mask_irq_c(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_IRQMASKC); + iomd_writeb(val & ~mask, IOMD_IRQMASKC); +} + +static void cl7500_unmask_irq_c(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_IRQMASKC); + iomd_writeb(val | mask, IOMD_IRQMASKC); +} + +static struct irqchip clps7500_c_chip = { + .ack = cl7500_mask_irq_c, + .mask = cl7500_mask_irq_c, + .unmask = cl7500_unmask_irq_c, +}; + +static void cl7500_mask_irq_d(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_IRQMASKD); + iomd_writeb(val & ~mask, IOMD_IRQMASKD); +} + +static void cl7500_unmask_irq_d(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_IRQMASKD); + iomd_writeb(val | mask, IOMD_IRQMASKD); +} + +static struct irqchip clps7500_d_chip = { + .ack = cl7500_mask_irq_d, + .mask = cl7500_mask_irq_d, + .unmask = cl7500_unmask_irq_d, +}; + +static void cl7500_mask_irq_dma(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_DMAMASK); + iomd_writeb(val & ~mask, IOMD_DMAMASK); +} + +static void cl7500_unmask_irq_dma(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_DMAMASK); + iomd_writeb(val | mask, IOMD_DMAMASK); +} + +static struct irqchip clps7500_dma_chip = { + .ack = cl7500_mask_irq_dma, + .mask = cl7500_mask_irq_dma, + .unmask = cl7500_unmask_irq_dma, +}; + +static void cl7500_mask_irq_fiq(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_FIQMASK); + iomd_writeb(val & ~mask, IOMD_FIQMASK); +} + +static void cl7500_unmask_irq_fiq(unsigned int irq) +{ + unsigned int val, mask; + + mask = 1 << (irq & 7); + val = iomd_readb(IOMD_FIQMASK); + iomd_writeb(val | mask, IOMD_FIQMASK); +} + +static struct irqchip clps7500_fiq_chip = { + .ack = cl7500_mask_irq_fiq, + .mask = cl7500_mask_irq_fiq, + .unmask = cl7500_unmask_irq_fiq, +}; + +static void cl7500_no_action(unsigned int irq) +{ +} + +static struct irqchip clps7500_no_chip = { + .ack = cl7500_no_action, + .mask = cl7500_no_action, + .unmask = cl7500_no_action, +}; + +static struct irqaction irq_isa = { no_action, 0, CPU_MASK_NONE, "isa", NULL, NULL }; + +static void __init clps7500_init_irq(void) +{ + unsigned int irq, flags; + + iomd_writeb(0, IOMD_IRQMASKA); + iomd_writeb(0, IOMD_IRQMASKB); + iomd_writeb(0, IOMD_FIQMASK); + iomd_writeb(0, IOMD_DMAMASK); + + for (irq = 0; irq < NR_IRQS; irq++) { + flags = IRQF_VALID; + + if (irq <= 6 || (irq >= 9 && irq <= 15) || + (irq >= 48 && irq <= 55)) + flags |= IRQF_PROBE; + + switch (irq) { + case 0 ... 7: + set_irq_chip(irq, &clps7500_a_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, flags); + break; + + case 8 ... 15: + set_irq_chip(irq, &clps7500_b_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, flags); + break; + + case 16 ... 22: + set_irq_chip(irq, &clps7500_dma_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, flags); + break; + + case 24 ... 31: + set_irq_chip(irq, &clps7500_c_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, flags); + break; + + case 40 ... 47: + set_irq_chip(irq, &clps7500_d_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, flags); + break; + + case 48 ... 55: + set_irq_chip(irq, &clps7500_no_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, flags); + break; + + case 64 ... 72: + set_irq_chip(irq, &clps7500_fiq_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, flags); + break; + } + } + + setup_irq(IRQ_ISA, &irq_isa); +} + +static struct map_desc cl7500_io_desc[] __initdata = { + { IO_BASE, IO_START, IO_SIZE, MT_DEVICE }, /* IO space */ + { ISA_BASE, ISA_START, ISA_SIZE, MT_DEVICE }, /* ISA space */ + { FLASH_BASE, FLASH_START, FLASH_SIZE, MT_DEVICE }, /* Flash */ + { LED_BASE, LED_START, LED_SIZE, MT_DEVICE } /* LED */ +}; + +static void __init clps7500_map_io(void) +{ + iotable_init(cl7500_io_desc, ARRAY_SIZE(cl7500_io_desc)); +} + +extern void ioctime_init(void); +extern unsigned long ioc_timer_gettimeoffset(void); + +static irqreturn_t +clps7500_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + write_seqlock(&xtime_lock); + + timer_tick(regs); + + /* Why not using do_leds interface?? */ + { + /* Twinkle the lights. */ + static int count, state = 0xff00; + if (count-- == 0) { + state ^= 0x100; + count = 25; + *((volatile unsigned int *)LED_ADDRESS) = state; + } + } + + write_sequnlock(&xtime_lock); + + return IRQ_HANDLED; +} + +static struct irqaction clps7500_timer_irq = { + .name = "CLPS7500 Timer Tick", + .flags = SA_INTERRUPT, + .handler = clps7500_timer_interrupt +}; + +/* + * Set up timer interrupt. + */ +static void __init clps7500_timer_init(void) +{ + ioctime_init(); + setup_irq(IRQ_TIMER, &clps7500_timer_irq); +} + +static struct sys_timer clps7500_timer = { + .init = clps7500_timer_init, + .offset = ioc_timer_gettimeoffset, +}; + +static struct plat_serial8250_port serial_platform_data[] = { + { + .mapbase = 0x03010fe0, + .irq = 10, + .uartclk = 1843200, + .regshift = 2, + .iotype = UPIO_MEM, + .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST, + }, + { + .mapbase = 0x03010be0, + .irq = 0, + .uartclk = 1843200, + .regshift = 2, + .iotype = UPIO_MEM, + .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST, + }, + { + .iobase = ISASLOT_IO + 0x2e8, + .irq = 41, + .uartclk = 1843200, + .regshift = 0, + .iotype = UPIO_PORT, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, + }, + { + .iobase = ISASLOT_IO + 0x3e8, + .irq = 40, + .uartclk = 1843200, + .regshift = 0, + .iotype = UPIO_PORT, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, + }, + { }, +}; + +static struct platform_device serial_device = { + .name = "serial8250", + .id = 0, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +static void __init clps7500_init(void) +{ + platform_device_register(&serial_device); +} + +MACHINE_START(CLPS7500, "CL-PS7500") + MAINTAINER("Philip Blundell") + BOOT_MEM(0x10000000, 0x03000000, 0xe0000000) + MAPIO(clps7500_map_io) + INITIRQ(clps7500_init_irq) + .init_machine = clps7500_init, + .timer = &clps7500_timer, +MACHINE_END + |