diff options
Diffstat (limited to 'arch/arm/mach-footbridge')
33 files changed, 611 insertions, 855 deletions
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig index bdd257921cf..07152d00fc5 100644 --- a/arch/arm/mach-footbridge/Kconfig +++ b/arch/arm/mach-footbridge/Kconfig @@ -4,6 +4,8 @@ menu "Footbridge Implementations" config ARCH_CATS bool "CATS" + select CLKEVT_I8253 + select CLKSRC_I8253 select FOOTBRIDGE_HOST select ISA select ISA_DMA @@ -50,6 +52,7 @@ config ARCH_EBSA285_HOST select FOOTBRIDGE_HOST select ISA select ISA_DMA + select ARCH_MAY_HAVE_PC_FDC select PCI help Say Y here if you intend to run this kernel on the EBSA285 card @@ -59,10 +62,13 @@ config ARCH_EBSA285_HOST config ARCH_NETWINDER bool "NetWinder" + select CLKEVT_I8253 + select CLKSRC_I8253 select FOOTBRIDGE_HOST select ISA select ISA_DMA select PCI + select VIRT_TO_BUS help Say Y here if you intend to run this kernel on the Rebel.COM NetWinder. Information about this machine can be found at: @@ -80,6 +86,7 @@ config FOOTBRIDGE # Footbridge in host mode config FOOTBRIDGE_HOST bool + select ARCH_MIGHT_HAVE_PC_SERIO # Footbridge in addin mode config FOOTBRIDGE_ADDIN @@ -87,7 +94,6 @@ config FOOTBRIDGE_ADDIN # EBSA285 board in either host or addin mode config ARCH_EBSA285 - select ARCH_MAY_HAVE_PC_FDC bool endif diff --git a/arch/arm/mach-footbridge/Makefile b/arch/arm/mach-footbridge/Makefile index 32f8609e4f8..c3faa3bc84d 100644 --- a/arch/arm/mach-footbridge/Makefile +++ b/arch/arm/mach-footbridge/Makefile @@ -4,25 +4,22 @@ # Object file lists. -obj-y := common.o dc21285.o dma.o isa-irq.o time.o +obj-y := common.o dma.o isa-irq.o obj-m := obj-n := obj- := +pci-y += dc21285.o pci-$(CONFIG_ARCH_CATS) += cats-pci.o pci-$(CONFIG_ARCH_EBSA285_HOST) += ebsa285-pci.o pci-$(CONFIG_ARCH_NETWINDER) += netwinder-pci.o pci-$(CONFIG_ARCH_PERSONAL_SERVER) += personal-pci.o -leds-$(CONFIG_ARCH_EBSA285) += ebsa285-leds.o -leds-$(CONFIG_ARCH_NETWINDER) += netwinder-leds.o - obj-$(CONFIG_ARCH_CATS) += cats-hw.o isa-timer.o obj-$(CONFIG_ARCH_EBSA285) += ebsa285.o dc21285-timer.o obj-$(CONFIG_ARCH_NETWINDER) += netwinder-hw.o isa-timer.o obj-$(CONFIG_ARCH_PERSONAL_SERVER) += personal.o dc21285-timer.o obj-$(CONFIG_PCI) +=$(pci-y) -obj-$(CONFIG_LEDS) +=$(leds-y) -obj-$(CONFIG_ISA) += isa.o +obj-$(CONFIG_ISA) += isa.o isa-rtc.o diff --git a/arch/arm/mach-footbridge/Makefile.boot b/arch/arm/mach-footbridge/Makefile.boot index c7e75acfe6c..ff0a4b5b0a8 100644 --- a/arch/arm/mach-footbridge/Makefile.boot +++ b/arch/arm/mach-footbridge/Makefile.boot @@ -1,4 +1,4 @@ - zreladdr-y := 0x00008000 + zreladdr-y += 0x00008000 params_phys-y := 0x00000100 initrd_phys-y := 0x00800000 diff --git a/arch/arm/mach-footbridge/cats-hw.c b/arch/arm/mach-footbridge/cats-hw.c index 1b996b26d2e..8f05489671b 100644 --- a/arch/arm/mach-footbridge/cats-hw.c +++ b/arch/arm/mach-footbridge/cats-hw.c @@ -76,22 +76,22 @@ __initcall(cats_hw_init); * hard reboots fail on early boards. */ static void __init -fixup_cats(struct machine_desc *desc, struct tag *tags, - char **cmdline, struct meminfo *mi) +fixup_cats(struct tag *tags, char **cmdline) { +#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) screen_info.orig_video_lines = 25; screen_info.orig_video_points = 16; screen_info.orig_y = 24; +#endif } MACHINE_START(CATS, "Chalice-CATS") /* Maintainer: Philip Blundell */ - .phys_io = DC21285_ARMCSR_BASE, - .io_pg_offst = ((0xfe000000) >> 18) & 0xfffc, - .boot_params = 0x00000100, - .soft_reboot = 1, + .atag_offset = 0x100, + .reboot_mode = REBOOT_SOFT, .fixup = fixup_cats, .map_io = footbridge_map_io, .init_irq = footbridge_init_irq, - .timer = &isa_timer, + .init_time = isa_timer_init, + .restart = footbridge_restart, MACHINE_END diff --git a/arch/arm/mach-footbridge/cats-pci.c b/arch/arm/mach-footbridge/cats-pci.c index ae3e1c8c758..5cec2567c9c 100644 --- a/arch/arm/mach-footbridge/cats-pci.c +++ b/arch/arm/mach-footbridge/cats-pci.c @@ -16,7 +16,12 @@ /* cats host-specific stuff */ static int irqmap_cats[] __initdata = { IRQ_PCI, IRQ_IN0, IRQ_IN1, IRQ_IN3 }; -static int __init cats_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +static u8 cats_no_swizzle(struct pci_dev *dev, u8 *pin) +{ + return 0; +} + +static int __init cats_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { if (dev->irq >= 255) return -1; /* not a valid interrupt. */ @@ -39,11 +44,11 @@ static int __init cats_map_irq(struct pci_dev *dev, u8 slot, u8 pin) * cards being used (ie, pci-pci bridge based cards)? */ static struct hw_pci cats_pci __initdata = { - .swizzle = NULL, + .swizzle = cats_no_swizzle, .map_irq = cats_map_irq, .nr_controllers = 1, + .ops = &dc21285_ops, .setup = dc21285_setup, - .scan = dc21285_scan_bus, .preinit = dc21285_preinit, .postinit = dc21285_postinit, }; diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c index b97f529e58e..9e8220e3839 100644 --- a/arch/arm/mach-footbridge/common.c +++ b/arch/arm/mach-footbridge/common.c @@ -15,16 +15,19 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/spinlock.h> - +#include <video/vga.h> + #include <asm/pgtable.h> #include <asm/page.h> #include <asm/irq.h> #include <asm/mach-types.h> #include <asm/setup.h> +#include <asm/system_misc.h> #include <asm/hardware/dec21285.h> #include <asm/mach/irq.h> #include <asm/mach/map.h> +#include <asm/mach/pci.h> #include "common.h" @@ -32,12 +35,13 @@ unsigned int mem_fclk_21285 = 50000000; EXPORT_SYMBOL(mem_fclk_21285); -static void __init early_fclk(char **arg) +static int __init early_fclk(char *arg) { - mem_fclk_21285 = simple_strtoul(*arg, arg, 0); + mem_fclk_21285 = simple_strtoul(arg, NULL, 0); + return 0; } -__early_param("mem_fclk_21285=", early_fclk); +early_param("mem_fclk_21285", early_fclk); static int __init parse_tag_memclk(const struct tag *tag) { @@ -74,20 +78,20 @@ static const int fb_irq_mask[] = { IRQ_MASK_PCI_PERR, /* 19 */ }; -static void fb_mask_irq(unsigned int irq) +static void fb_mask_irq(struct irq_data *d) { - *CSR_IRQ_DISABLE = fb_irq_mask[_DC21285_INR(irq)]; + *CSR_IRQ_DISABLE = fb_irq_mask[_DC21285_INR(d->irq)]; } -static void fb_unmask_irq(unsigned int irq) +static void fb_unmask_irq(struct irq_data *d) { - *CSR_IRQ_ENABLE = fb_irq_mask[_DC21285_INR(irq)]; + *CSR_IRQ_ENABLE = fb_irq_mask[_DC21285_INR(d->irq)]; } static struct irq_chip fb_chip = { - .ack = fb_mask_irq, - .mask = fb_mask_irq, - .unmask = fb_unmask_irq, + .irq_ack = fb_mask_irq, + .irq_mask = fb_mask_irq, + .irq_unmask = fb_unmask_irq, }; static void __init __fb_init_irq(void) @@ -101,8 +105,7 @@ static void __init __fb_init_irq(void) *CSR_FIQ_DISABLE = -1; for (irq = _DC21285_IRQ(0); irq < _DC21285_IRQ(20); irq++) { - set_irq_chip(irq, &fb_chip); - set_irq_handler(irq, handle_level_irq); + irq_set_chip_and_handler(irq, &fb_chip, handle_level_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } } @@ -140,11 +143,6 @@ static struct map_desc fb_common_io_desc[] __initdata = { .pfn = __phys_to_pfn(DC21285_ARMCSR_BASE), .length = ARMCSR_SIZE, .type = MT_DEVICE, - }, { - .virtual = XBUS_BASE, - .pfn = __phys_to_pfn(0x40000000), - .length = XBUS_SIZE, - .type = MT_DEVICE, } }; @@ -174,11 +172,6 @@ static struct map_desc ebsa285_host_io_desc[] __initdata = { .pfn = __phys_to_pfn(DC21285_PCI_IACK), .length = PCIIACK_SIZE, .type = MT_DEVICE, - }, { - .virtual = PCIO_BASE, - .pfn = __phys_to_pfn(DC21285_PCI_IO), - .length = PCIO_SIZE, - .type = MT_DEVICE, }, #endif }; @@ -195,12 +188,48 @@ void __init footbridge_map_io(void) * Now, work out what we've got to map in addition on this * platform. */ - if (footbridge_cfn_mode()) + if (footbridge_cfn_mode()) { iotable_init(ebsa285_host_io_desc, ARRAY_SIZE(ebsa285_host_io_desc)); + pci_map_io_early(__phys_to_pfn(DC21285_PCI_IO)); + } + + vga_base = PCIMEM_BASE; +} + +void footbridge_restart(enum reboot_mode mode, const char *cmd) +{ + if (mode == REBOOT_SOFT) { + /* Jump into the ROM */ + soft_restart(0x41000000); + } else { + /* + * Force the watchdog to do a CPU reset. + * + * After making sure that the watchdog is disabled + * (so we can change the timer registers) we first + * enable the timer to autoreload itself. Next, the + * timer interval is set really short and any + * current interrupt request is cleared (so we can + * see an edge transition). Finally, TIMER4 is + * enabled as the watchdog. + */ + *CSR_SA110_CNTL &= ~(1 << 13); + *CSR_TIMER4_CNTL = TIMER_CNTL_ENABLE | + TIMER_CNTL_AUTORELOAD | + TIMER_CNTL_DIV16; + *CSR_TIMER4_LOAD = 0x2; + *CSR_TIMER4_CLR = 0; + *CSR_SA110_CNTL |= (1 << 13); + } } #ifdef CONFIG_FOOTBRIDGE_ADDIN +static inline unsigned long fb_bus_sdram_offset(void) +{ + return *CSR_PCISDRAMBASE & 0xfffffff0; +} + /* * These two functions convert virtual addresses to PCI addresses and PCI * addresses to virtual addresses. Note that it is only legal to use these @@ -210,14 +239,13 @@ unsigned long __virt_to_bus(unsigned long res) { WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory); - return (res - PAGE_OFFSET) + (*CSR_PCISDRAMBASE & 0xfffffff0); + return res + (fb_bus_sdram_offset() - PAGE_OFFSET); } EXPORT_SYMBOL(__virt_to_bus); unsigned long __bus_to_virt(unsigned long res) { - res -= (*CSR_PCISDRAMBASE & 0xfffffff0); - res += PAGE_OFFSET; + res = res - (fb_bus_sdram_offset() - PAGE_OFFSET); WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory); @@ -225,4 +253,16 @@ unsigned long __bus_to_virt(unsigned long res) } EXPORT_SYMBOL(__bus_to_virt); +unsigned long __pfn_to_bus(unsigned long pfn) +{ + return __pfn_to_phys(pfn) + (fb_bus_sdram_offset() - PHYS_OFFSET); +} +EXPORT_SYMBOL(__pfn_to_bus); + +unsigned long __bus_to_pfn(unsigned long bus) +{ + return __phys_to_pfn(bus - (fb_bus_sdram_offset() - PHYS_OFFSET)); +} +EXPORT_SYMBOL(__bus_to_pfn); + #endif diff --git a/arch/arm/mach-footbridge/common.h b/arch/arm/mach-footbridge/common.h index b05e662d21a..b911e5587ec 100644 --- a/arch/arm/mach-footbridge/common.h +++ b/arch/arm/mach-footbridge/common.h @@ -1,6 +1,7 @@ +#include <linux/reboot.h> -extern struct sys_timer footbridge_timer; -extern struct sys_timer isa_timer; +extern void footbridge_timer_init(void); +extern void isa_timer_init(void); extern void isa_rtc_init(void); @@ -8,3 +9,6 @@ extern void footbridge_map_io(void); extern void footbridge_init_irq(void); extern void isa_init_irq(unsigned int irq); +extern void footbridge_restart(enum reboot_mode, const char *); + +extern void footbridge_sched_clock(void); diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c index da35bc5c5cc..bf7aa7d298e 100644 --- a/arch/arm/mach-footbridge/dc21285-timer.c +++ b/arch/arm/mach-footbridge/dc21285-timer.c @@ -4,63 +4,139 @@ * Copyright (C) 1998 Russell King. * Copyright (C) 1998 Phil Blundell */ +#include <linux/clockchips.h> +#include <linux/clocksource.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> -#include <linux/spinlock.h> +#include <linux/sched_clock.h> #include <asm/irq.h> #include <asm/hardware/dec21285.h> #include <asm/mach/time.h> +#include <asm/system_info.h> #include "common.h" -/* - * Footbridge timer 1 support. - */ -static unsigned long timer1_latch; +static cycle_t cksrc_dc21285_read(struct clocksource *cs) +{ + return cs->mask - *CSR_TIMER2_VALUE; +} -static unsigned long timer1_gettimeoffset (void) +static int cksrc_dc21285_enable(struct clocksource *cs) { - unsigned long value = timer1_latch - *CSR_TIMER1_VALUE; + *CSR_TIMER2_LOAD = cs->mask; + *CSR_TIMER2_CLR = 0; + *CSR_TIMER2_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16; + return 0; +} - return ((tick_nsec / 1000) * value) / timer1_latch; +static void cksrc_dc21285_disable(struct clocksource *cs) +{ + *CSR_TIMER2_CNTL = 0; } -static irqreturn_t -timer1_interrupt(int irq, void *dev_id) +static struct clocksource cksrc_dc21285 = { + .name = "dc21285_timer2", + .rating = 200, + .read = cksrc_dc21285_read, + .enable = cksrc_dc21285_enable, + .disable = cksrc_dc21285_disable, + .mask = CLOCKSOURCE_MASK(24), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +static int ckevt_dc21285_set_next_event(unsigned long delta, + struct clock_event_device *c) { *CSR_TIMER1_CLR = 0; + *CSR_TIMER1_LOAD = delta; + *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16; - timer_tick(); + return 0; +} + +static void ckevt_dc21285_set_mode(enum clock_event_mode mode, + struct clock_event_device *c) +{ + switch (mode) { + case CLOCK_EVT_MODE_RESUME: + case CLOCK_EVT_MODE_PERIODIC: + *CSR_TIMER1_CLR = 0; + *CSR_TIMER1_LOAD = (mem_fclk_21285 + 8 * HZ) / (16 * HZ); + *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_AUTORELOAD | + TIMER_CNTL_DIV16; + break; + + case CLOCK_EVT_MODE_ONESHOT: + case CLOCK_EVT_MODE_UNUSED: + case CLOCK_EVT_MODE_SHUTDOWN: + *CSR_TIMER1_CNTL = 0; + break; + } +} + +static struct clock_event_device ckevt_dc21285 = { + .name = "dc21285_timer1", + .features = CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_ONESHOT, + .rating = 200, + .irq = IRQ_TIMER1, + .set_next_event = ckevt_dc21285_set_next_event, + .set_mode = ckevt_dc21285_set_mode, +}; + +static irqreturn_t timer1_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *ce = dev_id; + + *CSR_TIMER1_CLR = 0; + + /* Stop the timer if in one-shot mode */ + if (ce->mode == CLOCK_EVT_MODE_ONESHOT) + *CSR_TIMER1_CNTL = 0; + + ce->event_handler(ce); return IRQ_HANDLED; } static struct irqaction footbridge_timer_irq = { - .name = "Timer1 timer tick", + .name = "dc21285_timer1", .handler = timer1_interrupt, - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .flags = IRQF_TIMER | IRQF_IRQPOLL, + .dev_id = &ckevt_dc21285, }; /* * Set up timer interrupt. */ -static void __init footbridge_timer_init(void) +void __init footbridge_timer_init(void) { - timer1_latch = (mem_fclk_21285 + 8 * HZ) / (16 * HZ); + struct clock_event_device *ce = &ckevt_dc21285; + unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16); - *CSR_TIMER1_CLR = 0; - *CSR_TIMER1_LOAD = timer1_latch; - *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_AUTORELOAD | TIMER_CNTL_DIV16; + clocksource_register_hz(&cksrc_dc21285, rate); - setup_irq(IRQ_TIMER1, &footbridge_timer_irq); + setup_irq(ce->irq, &footbridge_timer_irq); - isa_rtc_init(); + ce->cpumask = cpumask_of(smp_processor_id()); + clockevents_config_and_register(ce, rate, 0x4, 0xffffff); } -struct sys_timer footbridge_timer = { - .init = footbridge_timer_init, - .offset = timer1_gettimeoffset, -}; +static u64 notrace footbridge_read_sched_clock(void) +{ + return ~*CSR_TIMER3_VALUE; +} + +void __init footbridge_sched_clock(void) +{ + unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16); + + *CSR_TIMER3_LOAD = 0; + *CSR_TIMER3_CLR = 0; + *CSR_TIMER3_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16; + + sched_clock_register(footbridge_read_sched_clock, 24, rate); +} diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c index 3ffa54841ec..96a3d73ef4b 100644 --- a/arch/arm/mach-footbridge/dc21285.c +++ b/arch/arm/mach-footbridge/dc21285.c @@ -20,7 +20,6 @@ #include <linux/spinlock.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/mach/pci.h> #include <asm/hardware/dec21285.h> @@ -129,7 +128,7 @@ dc21285_write_config(struct pci_bus *bus, unsigned int devfn, int where, return PCIBIOS_SUCCESSFUL; } -static struct pci_ops dc21285_ops = { +struct pci_ops dc21285_ops = { .read = dc21285_read_config, .write = dc21285_write_config, }; @@ -274,17 +273,12 @@ int __init dc21285_setup(int nr, struct pci_sys_data *sys) allocate_resource(&iomem_resource, &res[0], 0x40000000, 0x80000000, 0xffffffff, 0x40000000, NULL, NULL); - sys->resource[0] = &ioport_resource; - sys->resource[1] = &res[0]; - sys->resource[2] = &res[1]; sys->mem_offset = DC21285_PCI_MEM; - return 1; -} + pci_add_resource_offset(&sys->resources, &res[0], sys->mem_offset); + pci_add_resource_offset(&sys->resources, &res[1], sys->mem_offset); -struct pci_bus * __init dc21285_scan_bus(int nr, struct pci_sys_data *sys) -{ - return pci_scan_bus(0, &dc21285_ops, sys); + return 1; } #define dc21285_request_irq(_a, _b, _c, _d, _e) \ @@ -295,10 +289,12 @@ void __init dc21285_preinit(void) unsigned int mem_size, mem_mask; int cfn_mode; + pcibios_min_mem = 0x81000000; + mem_size = (unsigned int)high_memory - PAGE_OFFSET; for (mem_mask = 0x00100000; mem_mask < 0x10000000; mem_mask <<= 1) if (mem_mask >= mem_size) - break; + break; /* * These registers need to be set up whether we're the @@ -338,26 +334,18 @@ void __init dc21285_preinit(void) /* * We don't care if these fail. */ - dc21285_request_irq(IRQ_PCI_SERR, dc21285_serr_irq, IRQF_DISABLED, + dc21285_request_irq(IRQ_PCI_SERR, dc21285_serr_irq, 0, "PCI system error", &serr_timer); - dc21285_request_irq(IRQ_PCI_PERR, dc21285_parity_irq, IRQF_DISABLED, + dc21285_request_irq(IRQ_PCI_PERR, dc21285_parity_irq, 0, "PCI parity error", &perr_timer); - dc21285_request_irq(IRQ_PCI_ABORT, dc21285_abort_irq, IRQF_DISABLED, + dc21285_request_irq(IRQ_PCI_ABORT, dc21285_abort_irq, 0, "PCI abort", NULL); - dc21285_request_irq(IRQ_DISCARD_TIMER, dc21285_discard_irq, IRQF_DISABLED, + dc21285_request_irq(IRQ_DISCARD_TIMER, dc21285_discard_irq, 0, "Discard timer", NULL); - dc21285_request_irq(IRQ_PCI_DPERR, dc21285_dparity_irq, IRQF_DISABLED, + dc21285_request_irq(IRQ_PCI_DPERR, dc21285_dparity_irq, 0, "PCI data parity", NULL); if (cfn_mode) { - static struct resource csrio; - - csrio.flags = IORESOURCE_IO; - csrio.name = "Footbridge"; - - allocate_resource(&ioport_resource, &csrio, 128, - 0xff00, 0xffff, 128, NULL, NULL); - /* * Map our SDRAM at a known address in PCI space, just in case * the firmware had other ideas. Using a nonzero base is @@ -365,7 +353,7 @@ void __init dc21285_preinit(void) * in the range 0x000a0000 to 0x000c0000. (eg, S3 cards). */ *CSR_PCICSRBASE = 0xf4000000; - *CSR_PCICSRIOBASE = csrio.start; + *CSR_PCICSRIOBASE = 0; *CSR_PCISDRAMBASE = __virt_to_bus(PAGE_OFFSET); *CSR_PCIROMBASE = 0; *CSR_PCICMD = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | diff --git a/arch/arm/mach-footbridge/dma.c b/arch/arm/mach-footbridge/dma.c index 4f350634696..e2e0df8bcee 100644 --- a/arch/arm/mach-footbridge/dma.c +++ b/arch/arm/mach-footbridge/dma.c @@ -21,16 +21,16 @@ #include <asm/hardware/dec21285.h> #if 0 -static int fb_dma_request(dmach_t channel, dma_t *dma) +static int fb_dma_request(unsigned int chan, dma_t *dma) { return -EINVAL; } -static void fb_dma_enable(dmach_t channel, dma_t *dma) +static void fb_dma_enable(unsigned int chan, dma_t *dma) { } -static void fb_dma_disable(dmach_t channel, dma_t *dma) +static void fb_dma_disable(unsigned int chan, dma_t *dma) { } @@ -42,7 +42,7 @@ static struct dma_ops fb_dma_ops = { }; #endif -void __init arch_dma_init(dma_t *dma) +static int __init fb_dma_init(void) { #if 0 dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops; @@ -50,6 +50,8 @@ void __init arch_dma_init(dma_t *dma) #endif #ifdef CONFIG_ISA_DMA if (footbridge_cfn_mode()) - isa_init_dma(dma + _ISA_DMA(0)); + isa_init_dma(); #endif + return 0; } +core_initcall(fb_dma_init); diff --git a/arch/arm/mach-footbridge/ebsa285-leds.c b/arch/arm/mach-footbridge/ebsa285-leds.c deleted file mode 100644 index 4e10090cd87..00000000000 --- a/arch/arm/mach-footbridge/ebsa285-leds.c +++ /dev/null @@ -1,139 +0,0 @@ -/* - * linux/arch/arm/mach-footbridge/ebsa285-leds.c - * - * Copyright (C) 1998-1999 Russell King - * - * 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. - * EBSA-285 control routines. - * - * The EBSA-285 uses the leds as follows: - * - Green - toggles state every 50 timer interrupts - * - Amber - On if system is not idle - * - Red - currently unused - * - * Changelog: - * 02-05-1999 RMK Various cleanups - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/spinlock.h> - -#include <mach/hardware.h> -#include <asm/leds.h> -#include <asm/mach-types.h> -#include <asm/system.h> - -#define LED_STATE_ENABLED 1 -#define LED_STATE_CLAIMED 2 -static char led_state; -static char hw_led_state; - -static DEFINE_SPINLOCK(leds_lock); - -static void ebsa285_leds_event(led_event_t evt) -{ - unsigned long flags; - - spin_lock_irqsave(&leds_lock, flags); - - switch (evt) { - case led_start: - hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN; -#ifndef CONFIG_LEDS_CPU - hw_led_state |= XBUS_LED_AMBER; -#endif - led_state |= LED_STATE_ENABLED; - break; - - case led_stop: - led_state &= ~LED_STATE_ENABLED; - break; - - case led_claim: - led_state |= LED_STATE_CLAIMED; - hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER; - break; - - case led_release: - led_state &= ~LED_STATE_CLAIMED; - hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER; - break; - -#ifdef CONFIG_LEDS_TIMER - case led_timer: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state ^= XBUS_LED_GREEN; - break; -#endif - -#ifdef CONFIG_LEDS_CPU - case led_idle_start: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state |= XBUS_LED_AMBER; - break; - - case led_idle_end: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state &= ~XBUS_LED_AMBER; - break; -#endif - - case led_halted: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state &= ~XBUS_LED_RED; - break; - - case led_green_on: - if (led_state & LED_STATE_CLAIMED) - hw_led_state &= ~XBUS_LED_GREEN; - break; - - case led_green_off: - if (led_state & LED_STATE_CLAIMED) - hw_led_state |= XBUS_LED_GREEN; - break; - - case led_amber_on: - if (led_state & LED_STATE_CLAIMED) - hw_led_state &= ~XBUS_LED_AMBER; - break; - - case led_amber_off: - if (led_state & LED_STATE_CLAIMED) - hw_led_state |= XBUS_LED_AMBER; - break; - - case led_red_on: - if (led_state & LED_STATE_CLAIMED) - hw_led_state &= ~XBUS_LED_RED; - break; - - case led_red_off: - if (led_state & LED_STATE_CLAIMED) - hw_led_state |= XBUS_LED_RED; - break; - - default: - break; - } - - if (led_state & LED_STATE_ENABLED) - *XBUS_LEDS = hw_led_state; - - spin_unlock_irqrestore(&leds_lock, flags); -} - -static int __init leds_init(void) -{ - if (machine_is_ebsa285()) - leds_event = ebsa285_leds_event; - - leds_event(led_start); - - return 0; -} - -__initcall(leds_init); diff --git a/arch/arm/mach-footbridge/ebsa285-pci.c b/arch/arm/mach-footbridge/ebsa285-pci.c index 720c0bac170..fd12d8a36dc 100644 --- a/arch/arm/mach-footbridge/ebsa285-pci.c +++ b/arch/arm/mach-footbridge/ebsa285-pci.c @@ -15,25 +15,24 @@ static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI }; -static int __init ebsa285_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +static int __init ebsa285_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { if (dev->vendor == PCI_VENDOR_ID_CONTAQ && dev->device == PCI_DEVICE_ID_CONTAQ_82C693) switch (PCI_FUNC(dev->devfn)) { - case 1: return 14; - case 2: return 15; - case 3: return 12; + case 1: return 14; + case 2: return 15; + case 3: return 12; } return irqmap_ebsa285[(slot + pin) & 3]; } static struct hw_pci ebsa285_pci __initdata = { - .swizzle = pci_std_swizzle, .map_irq = ebsa285_map_irq, .nr_controllers = 1, + .ops = &dc21285_ops, .setup = dc21285_setup, - .scan = dc21285_scan_bus, .preinit = dc21285_preinit, .postinit = dc21285_postinit, }; diff --git a/arch/arm/mach-footbridge/ebsa285.c b/arch/arm/mach-footbridge/ebsa285.c index 30040fd588c..aee8300f349 100644 --- a/arch/arm/mach-footbridge/ebsa285.c +++ b/arch/arm/mach-footbridge/ebsa285.c @@ -4,7 +4,10 @@ * EBSA285 machine fixup */ #include <linux/init.h> +#include <linux/io.h> #include <linux/spinlock.h> +#include <linux/slab.h> +#include <linux/leds.h> #include <asm/hardware/dec21285.h> #include <asm/mach-types.h> @@ -13,15 +16,108 @@ #include "common.h" +/* LEDs */ +#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) +#define XBUS_AMBER_L BIT(0) +#define XBUS_GREEN_L BIT(1) +#define XBUS_RED_L BIT(2) +#define XBUS_TOGGLE BIT(7) + +struct ebsa285_led { + struct led_classdev cdev; + u8 mask; +}; + +/* + * The triggers lines up below will only be used if the + * LED triggers are compiled in. + */ +static const struct { + const char *name; + const char *trigger; +} ebsa285_leds[] = { + { "ebsa285:amber", "cpu0", }, + { "ebsa285:green", "heartbeat", }, + { "ebsa285:red",}, +}; + +static unsigned char hw_led_state; +static void __iomem *xbus; + +static void ebsa285_led_set(struct led_classdev *cdev, + enum led_brightness b) +{ + struct ebsa285_led *led = container_of(cdev, + struct ebsa285_led, cdev); + + if (b == LED_OFF) + hw_led_state |= led->mask; + else + hw_led_state &= ~led->mask; + writeb(hw_led_state, xbus); +} + +static enum led_brightness ebsa285_led_get(struct led_classdev *cdev) +{ + struct ebsa285_led *led = container_of(cdev, + struct ebsa285_led, cdev); + + return hw_led_state & led->mask ? LED_OFF : LED_FULL; +} + +static int __init ebsa285_leds_init(void) +{ + int i; + + if (!machine_is_ebsa285()) + return -ENODEV; + + xbus = ioremap(XBUS_CS2, SZ_4K); + if (!xbus) + return -ENOMEM; + + /* 3 LEDS all off */ + hw_led_state = XBUS_AMBER_L | XBUS_GREEN_L | XBUS_RED_L; + writeb(hw_led_state, xbus); + + for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) { + struct ebsa285_led *led; + + led = kzalloc(sizeof(*led), GFP_KERNEL); + if (!led) + break; + + led->cdev.name = ebsa285_leds[i].name; + led->cdev.brightness_set = ebsa285_led_set; + led->cdev.brightness_get = ebsa285_led_get; + led->cdev.default_trigger = ebsa285_leds[i].trigger; + led->mask = BIT(i); + + if (led_classdev_register(NULL, &led->cdev) < 0) { + kfree(led); + break; + } + } + + return 0; +} + +/* + * Since we may have triggers on any subsystem, defer registration + * until after subsystem_init. + */ +fs_initcall(ebsa285_leds_init); +#endif + MACHINE_START(EBSA285, "EBSA285") /* Maintainer: Russell King */ - .phys_io = DC21285_ARMCSR_BASE, - .io_pg_offst = ((0xfe000000) >> 18) & 0xfffc, - .boot_params = 0x00000100, + .atag_offset = 0x100, .video_start = 0x000a0000, .video_end = 0x000bffff, .map_io = footbridge_map_io, + .init_early = footbridge_sched_clock, .init_irq = footbridge_init_irq, - .timer = &footbridge_timer, + .init_time = footbridge_timer_init, + .restart = footbridge_restart, MACHINE_END diff --git a/arch/arm/mach-footbridge/include/mach/debug-macro.S b/arch/arm/mach-footbridge/include/mach/debug-macro.S index 4329b812357..02247f313e9 100644 --- a/arch/arm/mach-footbridge/include/mach/debug-macro.S +++ b/arch/arm/mach-footbridge/include/mach/debug-macro.S @@ -13,33 +13,19 @@ #include <asm/hardware/dec21285.h> -#ifndef CONFIG_DEBUG_DC21285_PORT - /* For NetWinder debugging */ - .macro addruart,rx - mrc p15, 0, \rx, c1, c0 - tst \rx, #1 @ MMU enabled? - moveq \rx, #0x7c000000 @ physical - movne \rx, #0xff000000 @ virtual - orr \rx, \rx, #0x000003f8 - .endm - -#define UART_SHIFT 0 -#define FLOW_CONTROL -#include <asm/hardware/debug-8250.S> - -#else +#include <mach/hardware.h> /* For EBSA285 debugging */ .equ dc21285_high, ARMCSR_BASE & 0xff000000 .equ dc21285_low, ARMCSR_BASE & 0x00ffffff - .macro addruart,rx - mrc p15, 0, \rx, c1, c0 - tst \rx, #1 @ MMU enabled? - moveq \rx, #0x42000000 - movne \rx, #dc21285_high + .macro addruart, rp, rv, tmp .if dc21285_low - orrne \rx, \rx, #dc21285_low + mov \rp, #dc21285_low + .else + mov \rp, #0 .endif + orr \rv, \rp, #dc21285_high + orr \rp, \rp, #0x42000000 .endm .macro senduart,rd,rx @@ -54,4 +40,3 @@ .macro waituart,rd,rx .endm -#endif diff --git a/arch/arm/mach-footbridge/include/mach/entry-macro.S b/arch/arm/mach-footbridge/include/mach/entry-macro.S index d3847be0c66..dabbd5c54a7 100644 --- a/arch/arm/mach-footbridge/include/mach/entry-macro.S +++ b/arch/arm/mach-footbridge/include/mach/entry-macro.S @@ -14,9 +14,6 @@ .equ dc21285_high, ARMCSR_BASE & 0xff000000 .equ dc21285_low, ARMCSR_BASE & 0x00ffffff - .macro disable_fiq - .endm - .macro get_irqnr_preamble, base, tmp mov \base, #dc21285_high .if dc21285_low @@ -24,9 +21,6 @@ .endif .endm - .macro arch_ret_to_user, tmp1, tmp2 - .endm - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp ldr \irqstat, [\base, #0x180] @ get interrupts diff --git a/arch/arm/mach-footbridge/include/mach/hardware.h b/arch/arm/mach-footbridge/include/mach/hardware.h index 51dd902043a..02f6d7a706b 100644 --- a/arch/arm/mach-footbridge/include/mach/hardware.h +++ b/arch/arm/mach-footbridge/include/mach/hardware.h @@ -23,32 +23,35 @@ * 0xf9000000 0x50000000 1MB Cache flush * 0xf0000000 0x80000000 16MB ISA memory */ + +#ifdef CONFIG_MMU +#define MMU_IO(a, b) (a) +#else +#define MMU_IO(a, b) (b) +#endif + #define XBUS_SIZE 0x00100000 -#define XBUS_BASE 0xff800000 +#define XBUS_BASE MMU_IO(0xff800000, 0x40000000) #define ARMCSR_SIZE 0x00100000 -#define ARMCSR_BASE 0xfe000000 +#define ARMCSR_BASE MMU_IO(0xfe000000, 0x42000000) #define WFLUSH_SIZE 0x00100000 -#define WFLUSH_BASE 0xfd000000 +#define WFLUSH_BASE MMU_IO(0xfd000000, 0x78000000) #define PCIIACK_SIZE 0x00100000 -#define PCIIACK_BASE 0xfc000000 +#define PCIIACK_BASE MMU_IO(0xfc000000, 0x79000000) #define PCICFG1_SIZE 0x01000000 -#define PCICFG1_BASE 0xfb000000 +#define PCICFG1_BASE MMU_IO(0xfb000000, 0x7a000000) #define PCICFG0_SIZE 0x01000000 -#define PCICFG0_BASE 0xfa000000 +#define PCICFG0_BASE MMU_IO(0xfa000000, 0x7b000000) #define PCIMEM_SIZE 0x01000000 -#define PCIMEM_BASE 0xf0000000 +#define PCIMEM_BASE MMU_IO(0xf0000000, 0x80000000) -#define XBUS_LEDS ((volatile unsigned char *)(XBUS_BASE + 0x12000)) -#define XBUS_LED_AMBER (1 << 0) -#define XBUS_LED_GREEN (1 << 1) -#define XBUS_LED_RED (1 << 2) -#define XBUS_LED_TOGGLE (1 << 8) +#define XBUS_CS2 0x40012000 #define XBUS_SWITCH ((volatile unsigned char *)(XBUS_BASE + 0x12000)) #define XBUS_SWITCH_SWITCH ((*XBUS_SWITCH) & 15) @@ -86,16 +89,11 @@ #define CPLD_FLASH_WR_ENABLE 1 #ifndef __ASSEMBLY__ -extern spinlock_t nw_gpio_lock; +extern raw_spinlock_t nw_gpio_lock; extern void nw_gpio_modify_op(unsigned int mask, unsigned int set); extern void nw_gpio_modify_io(unsigned int mask, unsigned int in); extern unsigned int nw_gpio_read(void); extern void nw_cpld_modify(unsigned int mask, unsigned int set); #endif -#define pcibios_assign_all_busses() 1 - -#define PCIBIOS_MIN_IO 0x1000 -#define PCIBIOS_MIN_MEM 0x81000000 - #endif diff --git a/arch/arm/mach-footbridge/include/mach/io.h b/arch/arm/mach-footbridge/include/mach/io.h index 101a4fe90bd..aba46388cc0 100644 --- a/arch/arm/mach-footbridge/include/mach/io.h +++ b/arch/arm/mach-footbridge/include/mach/io.h @@ -14,27 +14,10 @@ #ifndef __ASM_ARM_ARCH_IO_H #define __ASM_ARM_ARCH_IO_H -#define PCIO_SIZE 0x00100000 -#define PCIO_BASE 0xff000000 - -#define IO_SPACE_LIMIT 0xffff - /* - * Translation of various region addresses to virtual addresses + * Translation of various i/o addresses to host addresses for !CONFIG_MMU */ +#define PCIO_BASE 0x7c000000 #define __io(a) ((void __iomem *)(PCIO_BASE + (a))) -#if 1 -#define __mem_pci(a) (a) -#else - -static inline void __iomem *___mem_pci(void __iomem *p) -{ - unsigned long a = (unsigned long)p; - BUG_ON(a <= 0xc0000000 || a >= 0xe0000000); - return p; -} - -#define __mem_pci(a) ___mem_pci(a) -#endif #endif diff --git a/arch/arm/mach-footbridge/include/mach/irqs.h b/arch/arm/mach-footbridge/include/mach/irqs.h index 400551e43e4..61c714c4920 100644 --- a/arch/arm/mach-footbridge/include/mach/irqs.h +++ b/arch/arm/mach-footbridge/include/mach/irqs.h @@ -89,8 +89,6 @@ #define IRQ_NETWINDER_VGA _ISA_IRQ(11) #define IRQ_NETWINDER_SOUND _ISA_IRQ(12) -#undef RTC_IRQ -#define RTC_IRQ IRQ_ISA_RTC_ALARM #define I8042_KBD_IRQ IRQ_ISA_KEYBOARD #define I8042_AUX_IRQ (machine_is_netwinder() ? IRQ_NETWINDER_PS2MOUSE : IRQ_ISA_PS2MOUSE) #define IRQ_FLOPPYDISK IRQ_ISA_FLOPPY diff --git a/arch/arm/mach-footbridge/include/mach/memory.h b/arch/arm/mach-footbridge/include/mach/memory.h index cb16e59d87b..5c6df377f96 100644 --- a/arch/arm/mach-footbridge/include/mach/memory.h +++ b/arch/arm/mach-footbridge/include/mach/memory.h @@ -29,6 +29,8 @@ #ifndef __ASSEMBLY__ extern unsigned long __virt_to_bus(unsigned long); extern unsigned long __bus_to_virt(unsigned long); +extern unsigned long __pfn_to_bus(unsigned long); +extern unsigned long __bus_to_pfn(unsigned long); #endif #define __virt_to_bus __virt_to_bus #define __bus_to_virt __bus_to_virt @@ -36,14 +38,15 @@ extern unsigned long __bus_to_virt(unsigned long); #elif defined(CONFIG_FOOTBRIDGE_HOST) /* - * The footbridge is programmed to expose the system RAM at the corresponding - * address. So, if PAGE_OFFSET is 0xc0000000, RAM appears at 0xe0000000. - * If 0x80000000, then its exposed at 0xa0000000 on the bus. etc. - * The only requirement is that the RAM isn't placed at bus address 0 which + * The footbridge is programmed to expose the system RAM at 0xe0000000. + * The requirement is that the RAM isn't placed at bus address 0, which * would clash with VGA cards. */ -#define __virt_to_bus(x) ((x) - 0xe0000000) -#define __bus_to_virt(x) ((x) + 0xe0000000) +#define BUS_OFFSET 0xe0000000 +#define __virt_to_bus(x) ((x) + (BUS_OFFSET - PAGE_OFFSET)) +#define __bus_to_virt(x) ((x) - (BUS_OFFSET - PAGE_OFFSET)) +#define __pfn_to_bus(x) (__pfn_to_phys(x) + (BUS_OFFSET - PHYS_OFFSET)) +#define __bus_to_pfn(x) __phys_to_pfn((x) - (BUS_OFFSET - PHYS_OFFSET)) #else @@ -59,7 +62,7 @@ extern unsigned long __bus_to_virt(unsigned long); /* * Physical DRAM offset. */ -#define PHYS_OFFSET UL(0x00000000) +#define PLAT_PHYS_OFFSET UL(0x00000000) #define FLUSH_BASE_PHYS 0x50000000 diff --git a/arch/arm/mach-footbridge/include/mach/system.h b/arch/arm/mach-footbridge/include/mach/system.h deleted file mode 100644 index 2db7f36bd6c..00000000000 --- a/arch/arm/mach-footbridge/include/mach/system.h +++ /dev/null @@ -1,69 +0,0 @@ -/* - * arch/arm/mach-footbridge/include/mach/system.h - * - * Copyright (C) 1996-1999 Russell King. - * - * 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. - */ -#include <linux/io.h> -#include <asm/hardware/dec21285.h> -#include <mach/hardware.h> -#include <asm/leds.h> -#include <asm/mach-types.h> - -static inline void arch_idle(void) -{ - cpu_do_idle(); -} - -static inline void arch_reset(char mode) -{ - if (mode == 's') { - /* - * Jump into the ROM - */ - cpu_reset(0x41000000); - } else { - if (machine_is_netwinder()) { - /* open up the SuperIO chip - */ - outb(0x87, 0x370); - outb(0x87, 0x370); - - /* aux function group 1 (logical device 7) - */ - outb(0x07, 0x370); - outb(0x07, 0x371); - - /* set GP16 for WD-TIMER output - */ - outb(0xe6, 0x370); - outb(0x00, 0x371); - - /* set a RED LED and toggle WD_TIMER for rebooting - */ - outb(0xc4, 0x338); - } else { - /* - * Force the watchdog to do a CPU reset. - * - * After making sure that the watchdog is disabled - * (so we can change the timer registers) we first - * enable the timer to autoreload itself. Next, the - * timer interval is set really short and any - * current interrupt request is cleared (so we can - * see an edge transition). Finally, TIMER4 is - * enabled as the watchdog. - */ - *CSR_SA110_CNTL &= ~(1 << 13); - *CSR_TIMER4_CNTL = TIMER_CNTL_ENABLE | - TIMER_CNTL_AUTORELOAD | - TIMER_CNTL_DIV16; - *CSR_TIMER4_LOAD = 0x2; - *CSR_TIMER4_CLR = 0; - *CSR_SA110_CNTL |= (1 << 13); - } - } -} diff --git a/arch/arm/mach-footbridge/include/mach/timex.h b/arch/arm/mach-footbridge/include/mach/timex.h deleted file mode 100644 index d0fea9d6d4a..00000000000 --- a/arch/arm/mach-footbridge/include/mach/timex.h +++ /dev/null @@ -1,18 +0,0 @@ -/* - * arch/arm/mach-footbridge/include/mach/timex.h - * - * Copyright (C) 1998 Russell King - * - * 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. - * - * EBSA285 architecture timex specifications - */ - -/* - * We assume a constant here; this satisfies the maths in linux/timex.h - * and linux/time.h. CLOCK_TICK_RATE is actually system dependent, but - * this must be a constant. - */ -#define CLOCK_TICK_RATE (50000000/16) diff --git a/arch/arm/mach-footbridge/include/mach/uncompress.h b/arch/arm/mach-footbridge/include/mach/uncompress.h index 5dfa4428734..a69398c05a5 100644 --- a/arch/arm/mach-footbridge/include/mach/uncompress.h +++ b/arch/arm/mach-footbridge/include/mach/uncompress.h @@ -35,4 +35,3 @@ static inline void flush(void) * nothing to do */ #define arch_decomp_setup() -#define arch_decomp_wdog() diff --git a/arch/arm/mach-footbridge/include/mach/vmalloc.h b/arch/arm/mach-footbridge/include/mach/vmalloc.h deleted file mode 100644 index d0958d860a3..00000000000 --- a/arch/arm/mach-footbridge/include/mach/vmalloc.h +++ /dev/null @@ -1,10 +0,0 @@ -/* - * arch/arm/mach-footbridge/include/mach/vmalloc.h - * - * 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. - */ - - -#define VMALLOC_END (PAGE_OFFSET + 0x30000000) diff --git a/arch/arm/mach-footbridge/isa-irq.c b/arch/arm/mach-footbridge/isa-irq.c index 8bfd06aeb64..c3a0abbc904 100644 --- a/arch/arm/mach-footbridge/isa-irq.c +++ b/arch/arm/mach-footbridge/isa-irq.c @@ -30,61 +30,61 @@ #include "common.h" -static void isa_mask_pic_lo_irq(unsigned int irq) +static void isa_mask_pic_lo_irq(struct irq_data *d) { - unsigned int mask = 1 << (irq & 7); + unsigned int mask = 1 << (d->irq & 7); outb(inb(PIC_MASK_LO) | mask, PIC_MASK_LO); } -static void isa_ack_pic_lo_irq(unsigned int irq) +static void isa_ack_pic_lo_irq(struct irq_data *d) { - unsigned int mask = 1 << (irq & 7); + unsigned int mask = 1 << (d->irq & 7); outb(inb(PIC_MASK_LO) | mask, PIC_MASK_LO); outb(0x20, PIC_LO); } -static void isa_unmask_pic_lo_irq(unsigned int irq) +static void isa_unmask_pic_lo_irq(struct irq_data *d) { - unsigned int mask = 1 << (irq & 7); + unsigned int mask = 1 << (d->irq & 7); outb(inb(PIC_MASK_LO) & ~mask, PIC_MASK_LO); } static struct irq_chip isa_lo_chip = { - .ack = isa_ack_pic_lo_irq, - .mask = isa_mask_pic_lo_irq, - .unmask = isa_unmask_pic_lo_irq, + .irq_ack = isa_ack_pic_lo_irq, + .irq_mask = isa_mask_pic_lo_irq, + .irq_unmask = isa_unmask_pic_lo_irq, }; -static void isa_mask_pic_hi_irq(unsigned int irq) +static void isa_mask_pic_hi_irq(struct irq_data *d) { - unsigned int mask = 1 << (irq & 7); + unsigned int mask = 1 << (d->irq & 7); outb(inb(PIC_MASK_HI) | mask, PIC_MASK_HI); } -static void isa_ack_pic_hi_irq(unsigned int irq) +static void isa_ack_pic_hi_irq(struct irq_data *d) { - unsigned int mask = 1 << (irq & 7); + unsigned int mask = 1 << (d->irq & 7); outb(inb(PIC_MASK_HI) | mask, PIC_MASK_HI); outb(0x62, PIC_LO); outb(0x20, PIC_HI); } -static void isa_unmask_pic_hi_irq(unsigned int irq) +static void isa_unmask_pic_hi_irq(struct irq_data *d) { - unsigned int mask = 1 << (irq & 7); + unsigned int mask = 1 << (d->irq & 7); outb(inb(PIC_MASK_HI) & ~mask, PIC_MASK_HI); } static struct irq_chip isa_hi_chip = { - .ack = isa_ack_pic_hi_irq, - .mask = isa_mask_pic_hi_irq, - .unmask = isa_unmask_pic_hi_irq, + .irq_ack = isa_ack_pic_hi_irq, + .irq_mask = isa_mask_pic_hi_irq, + .irq_unmask = isa_unmask_pic_hi_irq, }; static void @@ -151,14 +151,14 @@ void __init isa_init_irq(unsigned int host_irq) if (host_irq != (unsigned int)-1) { for (irq = _ISA_IRQ(0); irq < _ISA_IRQ(8); irq++) { - set_irq_chip(irq, &isa_lo_chip); - set_irq_handler(irq, handle_level_irq); + irq_set_chip_and_handler(irq, &isa_lo_chip, + handle_level_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } for (irq = _ISA_IRQ(8); irq < _ISA_IRQ(16); irq++) { - set_irq_chip(irq, &isa_hi_chip); - set_irq_handler(irq, handle_level_irq); + irq_set_chip_and_handler(irq, &isa_hi_chip, + handle_level_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } @@ -166,7 +166,7 @@ void __init isa_init_irq(unsigned int host_irq) request_resource(&ioport_resource, &pic2_resource); setup_irq(IRQ_ISA_CASCADE, &irq_cascade); - set_irq_chained_handler(host_irq, isa_irq_handler); + irq_set_chained_handler(host_irq, isa_irq_handler); /* * On the NetWinder, don't automatically diff --git a/arch/arm/mach-footbridge/isa-rtc.c b/arch/arm/mach-footbridge/isa-rtc.c new file mode 100644 index 00000000000..07fde4051f7 --- /dev/null +++ b/arch/arm/mach-footbridge/isa-rtc.c @@ -0,0 +1,57 @@ +/* + * arch/arm/mach-footbridge/isa-rtc.c + * + * Copyright (C) 1998 Russell King. + * Copyright (C) 1998 Phil Blundell + * + * CATS has a real-time clock, though the evaluation board doesn't. + * + * Changelog: + * 21-Mar-1998 RMK Created + * 27-Aug-1998 PJB CATS support + * 28-Dec-1998 APH Made leds optional + * 20-Jan-1999 RMK Started merge of EBSA285, CATS and NetWinder + * 16-Mar-1999 RMK More support for EBSA285-like machines with RTCs in + */ + +#define RTC_PORT(x) (0x70+(x)) +#define RTC_ALWAYS_BCD 0 + +#include <linux/init.h> +#include <linux/mc146818rtc.h> +#include <linux/bcd.h> +#include <linux/io.h> + +#include "common.h" + +void __init isa_rtc_init(void) +{ + int reg_d, reg_b; + + /* + * Probe for the RTC. + */ + reg_d = CMOS_READ(RTC_REG_D); + + /* + * make sure the divider is set + */ + CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_REG_A); + + /* + * Set control reg B + * (24 hour mode, update enabled) + */ + reg_b = CMOS_READ(RTC_REG_B) & 0x7f; + reg_b |= 2; + CMOS_WRITE(reg_b, RTC_REG_B); + + if ((CMOS_READ(RTC_REG_A) & 0x7f) == RTC_REF_CLCK_32KHZ && + CMOS_READ(RTC_REG_B) == reg_b) { + /* + * We have a RTC. Check the battery + */ + if ((reg_d & 0x80) == 0) + printk(KERN_WARNING "RTC: *** warning: CMOS battery bad\n"); + } +} diff --git a/arch/arm/mach-footbridge/isa-timer.c b/arch/arm/mach-footbridge/isa-timer.c index 0c8390082fa..b73f52e196b 100644 --- a/arch/arm/mach-footbridge/isa-timer.c +++ b/arch/arm/mach-footbridge/isa-timer.c @@ -4,90 +4,37 @@ * Copyright (C) 1998 Russell King. * Copyright (C) 1998 Phil Blundell */ +#include <linux/clockchips.h> +#include <linux/i8253.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> -#include <linux/io.h> +#include <linux/spinlock.h> +#include <linux/timex.h> #include <asm/irq.h> - #include <asm/mach/time.h> #include "common.h" -/* - * ISA timer tick support - */ -#define mSEC_10_from_14 ((14318180 + 100) / 200) - -static unsigned long isa_gettimeoffset(void) -{ - int count; - - static int count_p = (mSEC_10_from_14/6); /* for the first call after boot */ - static unsigned long jiffies_p = 0; - - /* - * cache volatile jiffies temporarily; we have IRQs turned off. - */ - unsigned long jiffies_t; - - /* timer count may underflow right here */ - outb_p(0x00, 0x43); /* latch the count ASAP */ - - count = inb_p(0x40); /* read the latched count */ - - /* - * We do this guaranteed double memory access instead of a _p - * postfix in the previous port access. Wheee, hackady hack - */ - jiffies_t = jiffies; - - count |= inb_p(0x40) << 8; - - /* Detect timer underflows. If we haven't had a timer tick since - the last time we were called, and time is apparently going - backwards, the counter must have wrapped during this routine. */ - if ((jiffies_t == jiffies_p) && (count > count_p)) - count -= (mSEC_10_from_14/6); - else - jiffies_p = jiffies_t; - - count_p = count; - - count = (((mSEC_10_from_14/6)-1) - count) * (tick_nsec / 1000); - count = (count + (mSEC_10_from_14/6)/2) / (mSEC_10_from_14/6); - - return count; -} - -static irqreturn_t -isa_timer_interrupt(int irq, void *dev_id) +static irqreturn_t pit_timer_interrupt(int irq, void *dev_id) { - timer_tick(); + struct clock_event_device *ce = dev_id; + ce->event_handler(ce); return IRQ_HANDLED; } -static struct irqaction isa_timer_irq = { - .name = "ISA timer tick", - .handler = isa_timer_interrupt, - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, +static struct irqaction pit_timer_irq = { + .name = "pit", + .handler = pit_timer_interrupt, + .flags = IRQF_TIMER | IRQF_IRQPOLL, + .dev_id = &i8253_clockevent, }; -static void __init isa_timer_init(void) +void __init isa_timer_init(void) { - isa_rtc_init(); - - /* enable PIT timer */ - /* set for periodic (4) and LSB/MSB write (0x30) */ - outb(0x34, 0x43); - outb((mSEC_10_from_14/6) & 0xFF, 0x40); - outb((mSEC_10_from_14/6) >> 8, 0x40); + clocksource_i8253_init(); - setup_irq(IRQ_ISA_TIMER, &isa_timer_irq); + setup_irq(i8253_clockevent.irq, &pit_timer_irq); + clockevent_i8253_init(false); } - -struct sys_timer isa_timer = { - .init = isa_timer_init, - .offset = isa_gettimeoffset, -}; diff --git a/arch/arm/mach-footbridge/isa.c b/arch/arm/mach-footbridge/isa.c index 725a219d0ed..4d9276c27d6 100644 --- a/arch/arm/mach-footbridge/isa.c +++ b/arch/arm/mach-footbridge/isa.c @@ -11,6 +11,9 @@ #include <linux/serial_8250.h> #include <asm/irq.h> +#include <asm/hardware/dec21285.h> + +#include "common.h" static struct resource rtc_resources[] = { [0] = { @@ -77,11 +80,18 @@ static struct platform_device serial_device = { static int __init footbridge_isa_init(void) { - int err; + int err = 0; - err = platform_device_register(&rtc_device); - if (err) - printk(KERN_ERR "Unable to register RTC device: %d\n", err); + if (!footbridge_cfn_mode()) + return 0; + + /* Personal server doesn't have RTC */ + if (!machine_is_personal_server()) { + isa_rtc_init(); + err = platform_device_register(&rtc_device); + if (err) + printk(KERN_ERR "Unable to register RTC device: %d\n", err); + } err = platform_device_register(&serial_device); if (err) printk(KERN_ERR "Unable to register serial device: %d\n", err); diff --git a/arch/arm/mach-footbridge/netwinder-hw.c b/arch/arm/mach-footbridge/netwinder-hw.c index ac7ffa6fc41..cdee08c6d23 100644 --- a/arch/arm/mach-footbridge/netwinder-hw.c +++ b/arch/arm/mach-footbridge/netwinder-hw.c @@ -12,11 +12,13 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/spinlock.h> +#include <linux/slab.h> +#include <linux/leds.h> #include <asm/hardware/dec21285.h> -#include <asm/leds.h> #include <asm/mach-types.h> #include <asm/setup.h> +#include <asm/system_misc.h> #include <asm/mach/arch.h> @@ -26,13 +28,6 @@ #define GP1_IO_BASE 0x338 #define GP2_IO_BASE 0x33a - -#ifdef CONFIG_LEDS -#define DEFAULT_LEDS 0 -#else -#define DEFAULT_LEDS GPIO_GREEN_LED -#endif - /* * Winbond WB83977F accessibility stuff */ @@ -68,7 +63,7 @@ static inline void wb977_ww(int reg, int val) /* * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE */ -DEFINE_SPINLOCK(nw_gpio_lock); +DEFINE_RAW_SPINLOCK(nw_gpio_lock); EXPORT_SYMBOL(nw_gpio_lock); static unsigned int current_gpio_op; @@ -327,9 +322,9 @@ static inline void wb977_init_gpio(void) /* * Set Group1/Group2 outputs */ - spin_lock_irqsave(&nw_gpio_lock, flags); + raw_spin_lock_irqsave(&nw_gpio_lock, flags); nw_gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN); - spin_unlock_irqrestore(&nw_gpio_lock, flags); + raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); } /* @@ -390,9 +385,9 @@ static void __init cpld_init(void) { unsigned long flags; - spin_lock_irqsave(&nw_gpio_lock, flags); + raw_spin_lock_irqsave(&nw_gpio_lock, flags); nw_cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE); - spin_unlock_irqrestore(&nw_gpio_lock, flags); + raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); } static unsigned char rwa_unlock[] __initdata = @@ -610,15 +605,9 @@ static void __init rwa010_init(void) static int __init nw_hw_init(void) { if (machine_is_netwinder()) { - unsigned long flags; - wb977_init(); cpld_init(); rwa010_init(); - - spin_lock_irqsave(&nw_gpio_lock, flags); - nw_gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS); - spin_unlock_irqrestore(&nw_gpio_lock, flags); } return 0; } @@ -631,8 +620,7 @@ __initcall(nw_hw_init); * the parameter page. */ static void __init -fixup_netwinder(struct machine_desc *desc, struct tag *tags, - char **cmdline, struct meminfo *mi) +fixup_netwinder(struct tag *tags, char **cmdline) { #ifdef CONFIG_ISAPNP extern int isapnp_disable; @@ -646,11 +634,131 @@ fixup_netwinder(struct machine_desc *desc, struct tag *tags, #endif } +static void netwinder_restart(enum reboot_mode mode, const char *cmd) +{ + if (mode == REBOOT_SOFT) { + /* Jump into the ROM */ + soft_restart(0x41000000); + } else { + local_irq_disable(); + local_fiq_disable(); + + /* open up the SuperIO chip */ + outb(0x87, 0x370); + outb(0x87, 0x370); + + /* aux function group 1 (logical device 7) */ + outb(0x07, 0x370); + outb(0x07, 0x371); + + /* set GP16 for WD-TIMER output */ + outb(0xe6, 0x370); + outb(0x00, 0x371); + + /* set a RED LED and toggle WD_TIMER for rebooting */ + outb(0xc4, 0x338); + } +} + +/* LEDs */ +#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) +struct netwinder_led { + struct led_classdev cdev; + u8 mask; +}; + +/* + * The triggers lines up below will only be used if the + * LED triggers are compiled in. + */ +static const struct { + const char *name; + const char *trigger; +} netwinder_leds[] = { + { "netwinder:green", "heartbeat", }, + { "netwinder:red", "cpu0", }, +}; + +/* + * The LED control in Netwinder is reversed: + * - setting bit means turn off LED + * - clearing bit means turn on LED + */ +static void netwinder_led_set(struct led_classdev *cdev, + enum led_brightness b) +{ + struct netwinder_led *led = container_of(cdev, + struct netwinder_led, cdev); + unsigned long flags; + u32 reg; + + raw_spin_lock_irqsave(&nw_gpio_lock, flags); + reg = nw_gpio_read(); + if (b != LED_OFF) + reg &= ~led->mask; + else + reg |= led->mask; + nw_gpio_modify_op(led->mask, reg); + raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); +} + +static enum led_brightness netwinder_led_get(struct led_classdev *cdev) +{ + struct netwinder_led *led = container_of(cdev, + struct netwinder_led, cdev); + unsigned long flags; + u32 reg; + + raw_spin_lock_irqsave(&nw_gpio_lock, flags); + reg = nw_gpio_read(); + raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); + + return (reg & led->mask) ? LED_OFF : LED_FULL; +} + +static int __init netwinder_leds_init(void) +{ + int i; + + if (!machine_is_netwinder()) + return -ENODEV; + + for (i = 0; i < ARRAY_SIZE(netwinder_leds); i++) { + struct netwinder_led *led; + + led = kzalloc(sizeof(*led), GFP_KERNEL); + if (!led) + break; + + led->cdev.name = netwinder_leds[i].name; + led->cdev.brightness_set = netwinder_led_set; + led->cdev.brightness_get = netwinder_led_get; + led->cdev.default_trigger = netwinder_leds[i].trigger; + + if (i == 0) + led->mask = GPIO_GREEN_LED; + else + led->mask = GPIO_RED_LED; + + if (led_classdev_register(NULL, &led->cdev) < 0) { + kfree(led); + break; + } + } + + return 0; +} + +/* + * Since we may have triggers on any subsystem, defer registration + * until after subsystem_init. + */ +fs_initcall(netwinder_leds_init); +#endif + MACHINE_START(NETWINDER, "Rebel-NetWinder") /* Maintainer: Russell King/Rebel.com */ - .phys_io = DC21285_ARMCSR_BASE, - .io_pg_offst = ((0xfe000000) >> 18) & 0xfffc, - .boot_params = 0x00000100, + .atag_offset = 0x100, .video_start = 0x000a0000, .video_end = 0x000bffff, .reserve_lp0 = 1, @@ -658,5 +766,6 @@ MACHINE_START(NETWINDER, "Rebel-NetWinder") .fixup = fixup_netwinder, .map_io = footbridge_map_io, .init_irq = footbridge_init_irq, - .timer = &isa_timer, + .init_time = isa_timer_init, + .restart = netwinder_restart, MACHINE_END diff --git a/arch/arm/mach-footbridge/netwinder-leds.c b/arch/arm/mach-footbridge/netwinder-leds.c deleted file mode 100644 index 00269fe0be8..00000000000 --- a/arch/arm/mach-footbridge/netwinder-leds.c +++ /dev/null @@ -1,139 +0,0 @@ -/* - * linux/arch/arm/mach-footbridge/netwinder-leds.c - * - * Copyright (C) 1998-1999 Russell King - * - * 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. - * - * NetWinder LED control routines. - * - * The Netwinder uses the leds as follows: - * - Green - toggles state every 50 timer interrupts - * - Red - On if the system is not idle - * - * Changelog: - * 02-05-1999 RMK Various cleanups - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/spinlock.h> - -#include <mach/hardware.h> -#include <asm/leds.h> -#include <asm/mach-types.h> -#include <asm/system.h> - -#define LED_STATE_ENABLED 1 -#define LED_STATE_CLAIMED 2 -static char led_state; -static char hw_led_state; - -static DEFINE_SPINLOCK(leds_lock); - -static void netwinder_leds_event(led_event_t evt) -{ - unsigned long flags; - - spin_lock_irqsave(&leds_lock, flags); - - switch (evt) { - case led_start: - led_state |= LED_STATE_ENABLED; - hw_led_state = GPIO_GREEN_LED; - break; - - case led_stop: - led_state &= ~LED_STATE_ENABLED; - break; - - case led_claim: - led_state |= LED_STATE_CLAIMED; - hw_led_state = 0; - break; - - case led_release: - led_state &= ~LED_STATE_CLAIMED; - hw_led_state = 0; - break; - -#ifdef CONFIG_LEDS_TIMER - case led_timer: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state ^= GPIO_GREEN_LED; - break; -#endif - -#ifdef CONFIG_LEDS_CPU - case led_idle_start: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state &= ~GPIO_RED_LED; - break; - - case led_idle_end: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state |= GPIO_RED_LED; - break; -#endif - - case led_halted: - if (!(led_state & LED_STATE_CLAIMED)) - hw_led_state |= GPIO_RED_LED; - break; - - case led_green_on: - if (led_state & LED_STATE_CLAIMED) - hw_led_state |= GPIO_GREEN_LED; - break; - - case led_green_off: - if (led_state & LED_STATE_CLAIMED) - hw_led_state &= ~GPIO_GREEN_LED; - break; - - case led_amber_on: - if (led_state & LED_STATE_CLAIMED) - hw_led_state |= GPIO_GREEN_LED | GPIO_RED_LED; - break; - - case led_amber_off: - if (led_state & LED_STATE_CLAIMED) - hw_led_state &= ~(GPIO_GREEN_LED | GPIO_RED_LED); - break; - - case led_red_on: - if (led_state & LED_STATE_CLAIMED) - hw_led_state |= GPIO_RED_LED; - break; - - case led_red_off: - if (led_state & LED_STATE_CLAIMED) - hw_led_state &= ~GPIO_RED_LED; - break; - - default: - break; - } - - spin_unlock_irqrestore(&leds_lock, flags); - - if (led_state & LED_STATE_ENABLED) { - spin_lock_irqsave(&nw_gpio_lock, flags); - nw_gpio_modify_op(GPIO_RED_LED | GPIO_GREEN_LED, hw_led_state); - spin_unlock_irqrestore(&nw_gpio_lock, flags); - } -} - -static int __init leds_init(void) -{ - if (machine_is_netwinder()) - leds_event = netwinder_leds_event; - - leds_event(led_start); - - return 0; -} - -__initcall(leds_init); diff --git a/arch/arm/mach-footbridge/netwinder-pci.c b/arch/arm/mach-footbridge/netwinder-pci.c index e263d6d54a0..0fba5134e4f 100644 --- a/arch/arm/mach-footbridge/netwinder-pci.c +++ b/arch/arm/mach-footbridge/netwinder-pci.c @@ -17,7 +17,7 @@ * We now use the slot ID instead of the device identifiers to select * which interrupt is routed where. */ -static int __init netwinder_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +static int __init netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { switch (slot) { case 0: /* host bridge */ @@ -43,11 +43,10 @@ static int __init netwinder_map_irq(struct pci_dev *dev, u8 slot, u8 pin) } static struct hw_pci netwinder_pci __initdata = { - .swizzle = pci_std_swizzle, .map_irq = netwinder_map_irq, .nr_controllers = 1, + .ops = &dc21285_ops, .setup = dc21285_setup, - .scan = dc21285_scan_bus, .preinit = dc21285_preinit, .postinit = dc21285_postinit, }; diff --git a/arch/arm/mach-footbridge/personal-pci.c b/arch/arm/mach-footbridge/personal-pci.c index d5fca95afda..5c9ee54613b 100644 --- a/arch/arm/mach-footbridge/personal-pci.c +++ b/arch/arm/mach-footbridge/personal-pci.c @@ -18,7 +18,8 @@ static int irqmap_personal_server[] __initdata = { IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI }; -static int __init personal_server_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +static int __init personal_server_map_irq(const struct pci_dev *dev, u8 slot, + u8 pin) { unsigned char line; @@ -40,8 +41,8 @@ static int __init personal_server_map_irq(struct pci_dev *dev, u8 slot, u8 pin) static struct hw_pci personal_server_pci __initdata = { .map_irq = personal_server_map_irq, .nr_controllers = 1, + .ops = &dc21285_ops, .setup = dc21285_setup, - .scan = dc21285_scan_bus, .preinit = dc21285_preinit, .postinit = dc21285_postinit, }; diff --git a/arch/arm/mach-footbridge/personal.c b/arch/arm/mach-footbridge/personal.c index e2c9f0690b1..7bdeabdcd4d 100644 --- a/arch/arm/mach-footbridge/personal.c +++ b/arch/arm/mach-footbridge/personal.c @@ -15,11 +15,10 @@ MACHINE_START(PERSONAL_SERVER, "Compaq-PersonalServer") /* Maintainer: Jamey Hicks / George France */ - .phys_io = DC21285_ARMCSR_BASE, - .io_pg_offst = ((0xfe000000) >> 18) & 0xfffc, - .boot_params = 0x00000100, + .atag_offset = 0x100, .map_io = footbridge_map_io, .init_irq = footbridge_init_irq, - .timer = &footbridge_timer, + .init_time = footbridge_timer_init, + .restart = footbridge_restart, MACHINE_END diff --git a/arch/arm/mach-footbridge/time.c b/arch/arm/mach-footbridge/time.c deleted file mode 100644 index cd1b54ff9fe..00000000000 --- a/arch/arm/mach-footbridge/time.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * arch/arm/mach-footbridge/include/mach/time.h - * - * Copyright (C) 1998 Russell King. - * Copyright (C) 1998 Phil Blundell - * - * CATS has a real-time clock, though the evaluation board doesn't. - * - * Changelog: - * 21-Mar-1998 RMK Created - * 27-Aug-1998 PJB CATS support - * 28-Dec-1998 APH Made leds optional - * 20-Jan-1999 RMK Started merge of EBSA285, CATS and NetWinder - * 16-Mar-1999 RMK More support for EBSA285-like machines with RTCs in - */ - -#define RTC_PORT(x) (rtc_base+(x)) -#define RTC_ALWAYS_BCD 0 - -#include <linux/timex.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/mc146818rtc.h> -#include <linux/bcd.h> -#include <linux/io.h> - -#include <mach/hardware.h> - -#include <asm/mach/time.h> -#include "common.h" - -static int rtc_base; - -static unsigned long __init get_isa_cmos_time(void) -{ - unsigned int year, mon, day, hour, min, sec; - - // check to see if the RTC makes sense..... - if ((CMOS_READ(RTC_VALID) & RTC_VRT) == 0) - return mktime(1970, 1, 1, 0, 0, 0); - - do { - sec = CMOS_READ(RTC_SECONDS); - min = CMOS_READ(RTC_MINUTES); - hour = CMOS_READ(RTC_HOURS); - day = CMOS_READ(RTC_DAY_OF_MONTH); - mon = CMOS_READ(RTC_MONTH); - year = CMOS_READ(RTC_YEAR); - } while (sec != CMOS_READ(RTC_SECONDS)); - - if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { - sec = bcd2bin(sec); - min = bcd2bin(min); - hour = bcd2bin(hour); - day = bcd2bin(day); - mon = bcd2bin(mon); - year = bcd2bin(year); - } - if ((year += 1900) < 1970) - year += 100; - return mktime(year, mon, day, hour, min, sec); -} - -static int set_isa_cmos_time(void) -{ - int retval = 0; - int real_seconds, real_minutes, cmos_minutes; - unsigned char save_control, save_freq_select; - unsigned long nowtime = xtime.tv_sec; - - save_control = CMOS_READ(RTC_CONTROL); /* tell the clock it's being set */ - CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL); - - save_freq_select = CMOS_READ(RTC_FREQ_SELECT); /* stop and reset prescaler */ - CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT); - - cmos_minutes = CMOS_READ(RTC_MINUTES); - if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) - cmos_minutes = bcd2bin(cmos_minutes); - - /* - * since we're only adjusting minutes and seconds, - * don't interfere with hour overflow. This avoids - * messing with unknown time zones but requires your - * RTC not to be off by more than 15 minutes - */ - real_seconds = nowtime % 60; - real_minutes = nowtime / 60; - if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1) - real_minutes += 30; /* correct for half hour time zone */ - real_minutes %= 60; - - if (abs(real_minutes - cmos_minutes) < 30) { - if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { - real_seconds = bin2bcd(real_seconds); - real_minutes = bin2bcd(real_minutes); - } - CMOS_WRITE(real_seconds,RTC_SECONDS); - CMOS_WRITE(real_minutes,RTC_MINUTES); - } else - retval = -1; - - /* The following flags have to be released exactly in this order, - * otherwise the DS12887 (popular MC146818A clone with integrated - * battery and quartz) will not reset the oscillator and will not - * update precisely 500 ms later. You won't find this mentioned in - * the Dallas Semiconductor data sheets, but who believes data - * sheets anyway ... -- Markus Kuhn - */ - CMOS_WRITE(save_control, RTC_CONTROL); - CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT); - - return retval; -} - -void __init isa_rtc_init(void) -{ - if (machine_is_personal_server()) - /* - * Add-in 21285s shouldn't access the RTC - */ - rtc_base = 0; - else - rtc_base = 0x70; - - if (rtc_base) { - int reg_d, reg_b; - - /* - * Probe for the RTC. - */ - reg_d = CMOS_READ(RTC_REG_D); - - /* - * make sure the divider is set - */ - CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_REG_A); - - /* - * Set control reg B - * (24 hour mode, update enabled) - */ - reg_b = CMOS_READ(RTC_REG_B) & 0x7f; - reg_b |= 2; - CMOS_WRITE(reg_b, RTC_REG_B); - - if ((CMOS_READ(RTC_REG_A) & 0x7f) == RTC_REF_CLCK_32KHZ && - CMOS_READ(RTC_REG_B) == reg_b) { - struct timespec tv; - - /* - * We have a RTC. Check the battery - */ - if ((reg_d & 0x80) == 0) - printk(KERN_WARNING "RTC: *** warning: CMOS battery bad\n"); - - tv.tv_nsec = 0; - tv.tv_sec = get_isa_cmos_time(); - do_settimeofday(&tv); - set_rtc = set_isa_cmos_time; - } else - rtc_base = 0; - } -} |