diff options
52 files changed, 990 insertions, 174 deletions
diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c index 0e63ee487d6d..9ba407b4fc97 100644 --- a/arch/mips/alchemy/common/dbdma.c +++ b/arch/mips/alchemy/common/dbdma.c @@ -1019,8 +1019,7 @@ static int __init dbdma_setup(unsigned int irq, dbdev_tab_t *idtable) dbdma_gptr->ddma_inten = 0xffff; au_sync(); - ret = request_irq(irq, dbdma_interrupt, IRQF_DISABLED, "dbdma", - (void *)dbdma_gptr); + ret = request_irq(irq, dbdma_interrupt, 0, "dbdma", (void *)dbdma_gptr); if (ret) printk(KERN_ERR "Cannot grab DBDMA interrupt!\n"); else { diff --git a/arch/mips/alchemy/common/time.c b/arch/mips/alchemy/common/time.c index d5da6adbf634..146a5fa80360 100644 --- a/arch/mips/alchemy/common/time.c +++ b/arch/mips/alchemy/common/time.c @@ -92,7 +92,7 @@ static struct clock_event_device au1x_rtcmatch2_clockdev = { static struct irqaction au1x_rtcmatch2_irqaction = { .handler = au1x_rtcmatch2_irq, - .flags = IRQF_DISABLED | IRQF_TIMER, + .flags = IRQF_TIMER, .name = "timer", .dev_id = &au1x_rtcmatch2_clockdev, }; diff --git a/arch/mips/alchemy/devboards/db1200/platform.c b/arch/mips/alchemy/devboards/db1200/platform.c index c61867c93c4a..78459c17c628 100644 --- a/arch/mips/alchemy/devboards/db1200/platform.c +++ b/arch/mips/alchemy/devboards/db1200/platform.c @@ -276,12 +276,12 @@ static int db1200_mmc_cd_setup(void *mmc_host, int en) if (en) { ret = request_irq(DB1200_SD0_INSERT_INT, db1200_mmc_cd, - IRQF_DISABLED, "sd_insert", mmc_host); + 0, "sd_insert", mmc_host); if (ret) goto out; ret = request_irq(DB1200_SD0_EJECT_INT, db1200_mmc_cd, - IRQF_DISABLED, "sd_eject", mmc_host); + 0, "sd_eject", mmc_host); if (ret) { free_irq(DB1200_SD0_INSERT_INT, mmc_host); goto out; diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index 853bac4f25b2..260b27367347 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -642,14 +642,6 @@ void __init plat_mem_setup(void) total = 0; - /* First add the init memory we will be returning. */ - memory = __pa_symbol(&__init_begin) & PAGE_MASK; - mem_alloc_size = (__pa_symbol(&__init_end) & PAGE_MASK) - memory; - if (mem_alloc_size > 0) { - add_memory_region(memory, mem_alloc_size, BOOT_MEM_RAM); - total += mem_alloc_size; - } - /* * The Mips memory init uses the first memory location for * some memory vectors. When SPARSEMEM is in use, it doesn't diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c index f7b7ba6d5c45..b874accd878a 100644 --- a/arch/mips/dec/setup.c +++ b/arch/mips/dec/setup.c @@ -110,7 +110,6 @@ static struct irqaction fpuirq = { }; static struct irqaction busirq = { - .flags = IRQF_DISABLED, .name = "bus error", .flags = IRQF_NO_THREAD, }; diff --git a/arch/mips/include/asm/bootinfo.h b/arch/mips/include/asm/bootinfo.h index 35cd1bab69c3..7a51d879e6ca 100644 --- a/arch/mips/include/asm/bootinfo.h +++ b/arch/mips/include/asm/bootinfo.h @@ -86,6 +86,7 @@ extern unsigned long mips_machtype; #define BOOT_MEM_RAM 1 #define BOOT_MEM_ROM_DATA 2 #define BOOT_MEM_RESERVED 3 +#define BOOT_MEM_INIT_RAM 4 /* * A memory map that's built upon what was determined diff --git a/arch/mips/include/asm/gio_device.h b/arch/mips/include/asm/gio_device.h new file mode 100644 index 000000000000..5437c84664bf --- /dev/null +++ b/arch/mips/include/asm/gio_device.h @@ -0,0 +1,56 @@ +#include <linux/device.h> +#include <linux/mod_devicetable.h> + +struct gio_device_id { + __u8 id; +}; + +struct gio_device { + struct device dev; + struct resource resource; + unsigned int irq; + unsigned int slotno; + + const char *name; + struct gio_device_id id; + unsigned id32:1; + unsigned gio64:1; +}; +#define to_gio_device(d) container_of(d, struct gio_device, dev) + +struct gio_driver { + const char *name; + struct module *owner; + const struct gio_device_id *id_table; + + int (*probe)(struct gio_device *, const struct gio_device_id *); + void (*remove)(struct gio_device *); + int (*suspend)(struct gio_device *, pm_message_t); + int (*resume)(struct gio_device *); + void (*shutdown)(struct gio_device *); + + struct device_driver driver; +}; +#define to_gio_driver(drv) container_of(drv, struct gio_driver, driver) + +extern const struct gio_device_id *gio_match_device(const struct gio_device_id *, + const struct gio_device *); +extern struct gio_device *gio_dev_get(struct gio_device *); +extern void gio_dev_put(struct gio_device *); + +extern int gio_device_register(struct gio_device *); +extern void gio_device_unregister(struct gio_device *); +extern void gio_release_dev(struct device *); + +static inline void gio_device_free(struct gio_device *dev) +{ + gio_release_dev(&dev->dev); +} + +extern int gio_register_driver(struct gio_driver *); +extern void gio_unregister_driver(struct gio_driver *); + +#define gio_get_drvdata(_dev) drv_get_drvdata(&(_dev)->dev) +#define gio_set_drvdata(_dev, data) drv_set_drvdata(&(_dev)->dev, (data)) + +extern void gio_set_master(struct gio_device *); diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h index c565b7c3f0b5..58d36889f09b 100644 --- a/arch/mips/include/asm/hugetlb.h +++ b/arch/mips/include/asm/hugetlb.h @@ -70,7 +70,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { - flush_tlb_mm(vma->vm_mm); + flush_tlb_page(vma, addr & huge_page_mask(hstate_vma(vma))); } static inline int huge_pte_none(pte_t pte) diff --git a/arch/mips/include/asm/mach-generic/floppy.h b/arch/mips/include/asm/mach-generic/floppy.h index 001a8ce17c17..a38f4d43e5e5 100644 --- a/arch/mips/include/asm/mach-generic/floppy.h +++ b/arch/mips/include/asm/mach-generic/floppy.h @@ -98,7 +98,7 @@ static inline void fd_disable_irq(void) static inline int fd_request_irq(void) { return request_irq(FLOPPY_IRQ, floppy_interrupt, - IRQF_DISABLED, "floppy", NULL); + 0, "floppy", NULL); } static inline void fd_free_irq(void) diff --git a/arch/mips/include/asm/mach-jazz/floppy.h b/arch/mips/include/asm/mach-jazz/floppy.h index 56e9ca6ae426..88b5acb75145 100644 --- a/arch/mips/include/asm/mach-jazz/floppy.h +++ b/arch/mips/include/asm/mach-jazz/floppy.h @@ -90,7 +90,7 @@ static inline void fd_disable_irq(void) static inline int fd_request_irq(void) { return request_irq(FLOPPY_IRQ, floppy_interrupt, - IRQF_DISABLED, "floppy", NULL); + 0, "floppy", NULL); } static inline void fd_free_irq(void) diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h index e59cd1ac09c2..d41790928c64 100644 --- a/arch/mips/include/asm/page.h +++ b/arch/mips/include/asm/page.h @@ -38,6 +38,14 @@ #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) +#else /* !CONFIG_HUGETLB_PAGE */ +# ifndef BUILD_BUG +# define BUILD_BUG() do { extern void __build_bug(void); __build_bug(); } while (0) +# endif +#define HPAGE_SHIFT ({BUILD_BUG(); 0; }) +#define HPAGE_SIZE ({BUILD_BUG(); 0; }) +#define HPAGE_MASK ({BUILD_BUG(); 0; }) +#define HUGETLB_PAGE_ORDER ({BUILD_BUG(); 0; }) #endif /* CONFIG_HUGETLB_PAGE */ #ifndef __ASSEMBLY__ diff --git a/arch/mips/include/asm/pgtable-32.h b/arch/mips/include/asm/pgtable-32.h index 469390656c3f..5d56bb230345 100644 --- a/arch/mips/include/asm/pgtable-32.h +++ b/arch/mips/include/asm/pgtable-32.h @@ -19,17 +19,7 @@ #include <asm-generic/pgtable-nopmd.h> /* - * - add_temporary_entry() add a temporary TLB entry. We use TLB entries - * starting at the top and working down. This is for populating the - * TLB before trap_init() puts the TLB miss handler in place. It - * should be used only for entries matching the actual page tables, - * to prevent inconsistencies. - */ -extern int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1, - unsigned long entryhi, unsigned long pagemask); - - -/* Basically we have the same two-level (which is the logical three level + * Basically we have the same two-level (which is the logical three level * Linux page table layout folded) page tables as the i386. Some day * when we have proper page coloring support we can have a 1% quicker * tlb refill handling mechanism, but for now it is a bit slower but diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c index 99ab86ffa4c0..f21868b28b24 100644 --- a/arch/mips/jazz/irq.c +++ b/arch/mips/jazz/irq.c @@ -134,7 +134,7 @@ static irqreturn_t r4030_timer_interrupt(int irq, void *dev_id) static struct irqaction r4030_timer_irqaction = { .handler = r4030_timer_interrupt, - .flags = IRQF_DISABLED | IRQF_TIMER, + .flags = IRQF_TIMER, .name = "R4030 timer", }; diff --git a/arch/mips/kernel/cevt-bcm1480.c b/arch/mips/kernel/cevt-bcm1480.c index 36c3898b76db..69bbfae183bc 100644 --- a/arch/mips/kernel/cevt-bcm1480.c +++ b/arch/mips/kernel/cevt-bcm1480.c @@ -145,7 +145,7 @@ void __cpuinit sb1480_clockevent_init(void) bcm1480_unmask_irq(cpu, irq); action->handler = sibyte_counter_handler; - action->flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER; + action->flags = IRQF_PERCPU | IRQF_TIMER; action->name = name; action->dev_id = cd; diff --git a/arch/mips/kernel/cevt-ds1287.c b/arch/mips/kernel/cevt-ds1287.c index 939157e397b9..ed648cb5a69f 100644 --- a/arch/mips/kernel/cevt-ds1287.c +++ b/arch/mips/kernel/cevt-ds1287.c @@ -108,7 +108,7 @@ static irqreturn_t ds1287_interrupt(int irq, void *dev_id) static struct irqaction ds1287_irqaction = { .handler = ds1287_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER, + .flags = IRQF_PERCPU | IRQF_TIMER, .name = "ds1287", }; diff --git a/arch/mips/kernel/cevt-gt641xx.c b/arch/mips/kernel/cevt-gt641xx.c index 339f3639b90e..831b47585b7c 100644 --- a/arch/mips/kernel/cevt-gt641xx.c +++ b/arch/mips/kernel/cevt-gt641xx.c @@ -114,7 +114,7 @@ static irqreturn_t gt641xx_timer0_interrupt(int irq, void *dev_id) static struct irqaction gt641xx_timer0_irqaction = { .handler = gt641xx_timer0_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER, + .flags = IRQF_PERCPU | IRQF_TIMER, .name = "gt641xx_timer0", }; diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c index e2d8e199be32..51095dd9599d 100644 --- a/arch/mips/kernel/cevt-r4k.c +++ b/arch/mips/kernel/cevt-r4k.c @@ -84,7 +84,7 @@ out: struct irqaction c0_compare_irqaction = { .handler = c0_compare_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER, + .flags = IRQF_PERCPU | IRQF_TIMER, .name = "timer", }; diff --git a/arch/mips/kernel/cevt-sb1250.c b/arch/mips/kernel/cevt-sb1250.c index 590c54f28a81..e73439fd6850 100644 --- a/arch/mips/kernel/cevt-sb1250.c +++ b/arch/mips/kernel/cevt-sb1250.c @@ -144,7 +144,7 @@ void __cpuinit sb1250_clockevent_init(void) sb1250_unmask_irq(cpu, irq); action->handler = sibyte_counter_handler; - action->flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER; + action->flags = IRQF_PERCPU | IRQF_TIMER; action->name = name; action->dev_id = cd; diff --git a/arch/mips/kernel/cevt-txx9.c b/arch/mips/kernel/cevt-txx9.c index f0ab92a1b057..e5c30b1d0860 100644 --- a/arch/mips/kernel/cevt-txx9.c +++ b/arch/mips/kernel/cevt-txx9.c @@ -146,7 +146,7 @@ static irqreturn_t txx9tmr_interrupt(int irq, void *dev_id) static struct irqaction txx9tmr_irq = { .handler = txx9tmr_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER, + .flags = IRQF_PERCPU | IRQF_TIMER, .name = "txx9tmr", .dev_id = &txx9_clock_event_device, }; diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c index 7047bff35ea5..c5bc344fc745 100644 --- a/arch/mips/kernel/i8253.c +++ b/arch/mips/kernel/i8253.c @@ -19,7 +19,7 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) static struct irqaction irq0 = { .handler = timer_interrupt, - .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TIMER, + .flags = IRQF_NOBALANCING | IRQF_TIMER, .name = "timer" }; diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c index 933166f44a6d..a9d801dec6b0 100644 --- a/arch/mips/kernel/rtlx.c +++ b/arch/mips/kernel/rtlx.c @@ -473,7 +473,6 @@ static const struct file_operations rtlx_fops = { static struct irqaction rtlx_irq = { .handler = rtlx_interrupt, - .flags = IRQF_DISABLED, .name = "RTLX", }; diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 84af26ab2212..e86c2cf554aa 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -121,6 +121,9 @@ static void __init print_memory_map(void) case BOOT_MEM_RAM: printk(KERN_CONT "(usable)\n"); break; + case BOOT_MEM_INIT_RAM: + printk(KERN_CONT "(usable after init)\n"); + break; case BOOT_MEM_ROM_DATA: printk(KERN_CONT "(ROM data)\n"); break; @@ -361,15 +364,24 @@ static void __init bootmem_init(void) for (i = 0; i < boot_mem_map.nr_map; i++) { unsigned long start, end, size; + start = PFN_UP(boot_mem_map.map[i].addr); + end = PFN_DOWN(boot_mem_map.map[i].addr + + boot_mem_map.map[i].size); + /* * Reserve usable memory. */ - if (boot_mem_map.map[i].type != BOOT_MEM_RAM) + switch (boot_mem_map.map[i].type) { + case BOOT_MEM_RAM: + break; + case BOOT_MEM_INIT_RAM: + memory_present(0, start, end); continue; + default: + /* Not usable memory */ + continue; + } - start = PFN_UP(boot_mem_map.map[i].addr); - end = PFN_DOWN(boot_mem_map.map[i].addr - + boot_mem_map.map[i].size); /* * We are rounding up the start address of usable memory * and at the end of the usable range downwards. @@ -455,11 +467,33 @@ early_param("mem", early_parse_mem); static void __init arch_mem_init(char **cmdline_p) { + phys_t init_mem, init_end, init_size; + extern void plat_mem_setup(void); /* call board setup routine */ plat_mem_setup(); + init_mem = PFN_UP(__pa_symbol(&__init_begin)) << PAGE_SHIFT; + init_end = PFN_DOWN(__pa_symbol(&__init_end)) << PAGE_SHIFT; + init_size = init_end - init_mem; + if (init_size) { + /* Make sure it is in the boot_mem_map */ + int i, found; + found = 0; + for (i = 0; i < boot_mem_map.nr_map; i++) { + if (init_mem >= boot_mem_map.map[i].addr && + init_mem < (boot_mem_map.map[i].addr + + boot_mem_map.map[i].size)) { + found = 1; + break; + } + } + if (!found) + add_memory_region(init_mem, init_size, + BOOT_MEM_INIT_RAM); + } + pr_info("Determined physical RAM map:\n"); print_memory_map(); @@ -523,6 +557,7 @@ static void __init resource_init(void) res = alloc_bootmem(sizeof(struct resource)); switch (boot_mem_map.map[i].type) { case BOOT_MEM_RAM: + case BOOT_MEM_INIT_RAM: case BOOT_MEM_ROM_DATA: res->name = "System RAM"; break; diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index b1eea63cc988..0a42ff3ff6a1 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -1130,7 +1130,7 @@ static void ipi_irq_dispatch(void) static struct irqaction irq_ipi = { .handler = ipi_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU, + .flags = IRQF_PERCPU, .name = "SMTC_IPI" }; diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c index 51fa0a4ba556..d673731c538a 100644 --- a/arch/mips/lantiq/irq.c +++ b/arch/mips/lantiq/irq.c @@ -240,7 +240,6 @@ out: static struct irqaction cascade = { .handler = no_action, - .flags = IRQF_DISABLED, .name = "cascade", }; diff --git a/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c b/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c index 0cb1b9760e34..5d1f48fa1a52 100644 --- a/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c +++ b/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c @@ -111,7 +111,7 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) static struct irqaction irq5 = { .handler = timer_interrupt, - .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TIMER, + .flags = IRQF_NOBALANCING | IRQF_TIMER, .name = "timer" }; diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile index 4d8c1623eee2..3ca2a065cf76 100644 --- a/arch/mips/mm/Makefile +++ b/arch/mips/mm/Makefile @@ -3,8 +3,8 @@ # obj-y += cache.o dma-default.o extable.o fault.o \ - init.o mmap.o tlbex.o tlbex-fault.o uasm.o \ - page.o + gup.o init.o mmap.o page.o tlbex.o \ + tlbex-fault.o uasm.o obj-$(CONFIG_32BIT) += ioremap.o pgtable-32.o obj-$(CONFIG_64BIT) += pgtable-64.o diff --git a/arch/mips/mm/gup.c b/arch/mips/mm/gup.c new file mode 100644 index 000000000000..33aadbcf170b --- /dev/null +++ b/arch/mips/mm/gup.c @@ -0,0 +1,315 @@ +/* + * Lockless get_user_pages_fast for MIPS + * + * Copyright (C) 2008 Nick Piggin + * Copyright (C) 2008 Novell Inc. + * Copyright (C) 2011 Ralf Baechle + */ +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/vmstat.h> +#include <linux/highmem.h> +#include <linux/swap.h> +#include <linux/hugetlb.h> + +#include <asm/pgtable.h> + +static inline pte_t gup_get_pte(pte_t *ptep) +{ +#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) + pte_t pte; + +retry: + pte.pte_low = ptep->pte_low; + smp_rmb(); + pte.pte_high = ptep->pte_high; + smp_rmb(); + if (unlikely(pte.pte_low != ptep->pte_low)) + goto retry; + + return pte; +#else + return ACCESS_ONCE(*ptep); +#endif +} + +static int gup_pte_range(pmd_t pmd, unsigned long addr, unsigned long end, + int write, struct page **pages, int *nr) +{ + pte_t *ptep = pte_offset_map(&pmd, addr); + do { + pte_t pte = gup_get_pte(ptep); + struct page *page; + + if (!pte_present(pte) || + pte_special(pte) || (write && !pte_write(pte))) { + pte_unmap(ptep); + return 0; + } + VM_BUG_ON(!pfn_valid(pte_pfn(pte))); + page = pte_page(pte); + get_page(page); + SetPageReferenced(page); + pages[*nr] = page; + (*nr)++; + + } while (ptep++, addr += PAGE_SIZE, addr != end); + + pte_unmap(ptep - 1); + return 1; +} + +static inline void get_head_page_multiple(struct page *page, int nr) +{ + VM_BUG_ON(page != compound_head(page)); + VM_BUG_ON(page_count(page) == 0); + atomic_add(nr, &page->_count); + SetPageReferenced(page); +} + +static int gup_huge_pmd(pmd_t pmd, unsigned long addr, unsigned long end, + int write, struct page **pages, int *nr) +{ + pte_t pte = *(pte_t *)&pmd; + struct page *head, *page; + int refs; + + if (write && !pte_write(pte)) + return 0; + /* hugepages are never "special" */ + VM_BUG_ON(pte_special(pte)); + VM_BUG_ON(!pfn_valid(pte_pfn(pte))); + + refs = 0; + head = pte_page(pte); + page = head + ((addr & ~PMD_MASK) >> PAGE_SHIFT); + do { + VM_BUG_ON(compound_head(page) != head); + pages[*nr] = page; + if (PageTail(page)) + get_huge_page_tail(page); + (*nr)++; + page++; + refs++; + } while (addr += PAGE_SIZE, addr != end); + + get_head_page_multiple(head, refs); + return 1; +} + +static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end, + int write, struct page **pages, int *nr) +{ + unsigned long next; + pmd_t *pmdp; + + pmdp = pmd_offset(&pud, addr); + do { + pmd_t pmd = *pmdp; + + next = pmd_addr_end(addr, end); + /* + * The pmd_trans_splitting() check below explains why + * pmdp_splitting_flush has to flush the tlb, to stop + * this gup-fast code from running while we set the + * splitting bit in the pmd. Returning zero will take + * the slow path that will call wait_split_huge_page() + * if the pmd is still in splitting state. gup-fast + * can't because it has irq disabled and + * wait_split_huge_page() would never return as the + * tlb flush IPI wouldn't run. + */ + if (pmd_none(pmd) || pmd_trans_splitting(pmd)) + return 0; + if (unlikely(pmd_huge(pmd))) { + if (!gup_huge_pmd(pmd, addr, next, write, pages,nr)) + return 0; + } else { + if (!gup_pte_range(pmd, addr, next, write, pages,nr)) + return 0; + } + } while (pmdp++, addr = next, addr != end); + + return 1; +} + +static int gup_huge_pud(pud_t pud, unsigned long addr, unsigned long end, + int write, struct page **pages, int *nr) +{ + pte_t pte = *(pte_t *)&pud; + struct page *head, *page; + int refs; + + if (write && !pte_write(pte)) + return 0; + /* hugepages are never "special" */ + VM_BUG_ON(pte_special(pte)); + VM_BUG_ON(!pfn_valid(pte_pfn(pte))); + + refs = 0; + head = pte_page(pte); + page = head + ((addr & ~PUD_MASK) >> PAGE_SHIFT); + do { + VM_BUG_ON(compound_head(page) != head); + pages[*nr] = page; + (*nr)++; + page++; + refs++; + } while (addr += PAGE_SIZE, addr != end); + + get_head_page_multiple(head, refs); + return 1; +} + +static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end, + int write, struct page **pages, int *nr) +{ + unsigned long next; + pud_t *pudp; + + pudp = pud_offset(&pgd, addr); + do { + pud_t pud = *pudp; + + next = pud_addr_end(addr, end); + if (pud_none(pud)) + return 0; + if (unlikely(pud_huge(pud))) { + if (!gup_huge_pud(pud, addr, next, write, pages,nr)) + return 0; + } else { + if (!gup_pmd_range(pud, addr, next, write, pages,nr)) + return 0; + } + } while (pudp++, addr = next, addr != end); + + return 1; +} + +/* + * Like get_user_pages_fast() except its IRQ-safe in that it won't fall + * back to the regular GUP. + */ +int __get_user_pages_fast(unsigned long start, int nr_pages, int write, + struct page **pages) +{ + struct mm_struct *mm = current->mm; + unsigned long addr, len, end; + unsigned long next; + unsigned long flags; + pgd_t *pgdp; + int nr = 0; + + start &= PAGE_MASK; + addr = start; + len = (unsigned long) nr_pages << PAGE_SHIFT; + end = start + len; + if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ, + (void __user *)start, len))) + return 0; + + /* + * XXX: batch / limit 'nr', to avoid large irq off latency + * needs some instrumenting to determine the common sizes used by + * important workloads (eg. DB2), and whether limiting the batch + * size will decrease performance. + * + * It seems like we're in the clear for the moment. Direct-IO is + * the main guy that batches up lots of get_user_pages, and even + * they are limited to 64-at-a-time which is not so many. + */ + /* + * This doesn't prevent pagetable teardown, but does prevent + * the pagetables and pages from being freed. + * + * So long as we atomically load page table pointers versus teardown, + * we can follow the address down to the page and take a ref on it. + */ + local_irq_save(flags); + pgdp = pgd_offset(mm, addr); + do { + pgd_t pgd = *pgdp; + + next = pgd_addr_end(addr, end); + if (pgd_none(pgd)) + break; + if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + break; + } while (pgdp++, addr = next, addr != end); + local_irq_restore(flags); + + return nr; +} + +/** + * get_user_pages_fast() - pin user pages in memory + * @start: starting user address + * @nr_pages: number of pages from start to pin + * @write: whether pages will be written to + * @pages: array that receives pointers to the pages pinned. + * Should be at least nr_pages long. + * + * Attempt to pin user pages in memory without taking mm->mmap_sem. + * If not successful, it will fall back to taking the lock and + * calling get_user_pages(). + * + * Returns number of pages pinned. This may be fewer than the number + * requested. If nr_pages is 0 or negative, returns 0. If no pages + * were pinned, returns -errno. + */ +int get_user_pages_fast(unsigned long start, int nr_pages, int write, + struct page **pages) +{ + struct mm_struct *mm = current->mm; + unsigned long addr, len, end; + unsigned long next; + pgd_t *pgdp; + int ret, nr = 0; + + start &= PAGE_MASK; + addr = start; + len = (unsigned long) nr_pages << PAGE_SHIFT; + + end = start + len; + if (end < start) + goto slow_irqon; + + /* XXX: batch / limit 'nr' */ + local_irq_disable(); + pgdp = pgd_offset(mm, addr); + do { + pgd_t pgd = *pgdp; + + next = pgd_addr_end(addr, end); + if (pgd_none(pgd)) + goto slow; + if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + goto slow; + } while (pgdp++, addr = next, addr != end); + local_irq_enable(); + + VM_BUG_ON(nr != (end - start) >> PAGE_SHIFT); + return nr; +slow: + local_irq_enable(); + +slow_irqon: + /* Try to get the remaining pages with get_user_pages */ + start += nr << PAGE_SHIFT; + pages += nr; + + down_read(&mm->mmap_sem); + ret = get_user_pages(current, mm, start, + (end - start) >> PAGE_SHIFT, + write, 0, pages, NULL); + up_read(&mm->mmap_sem); + + /* Have to be a bit careful with return values */ + if (nr > 0) { + if (ret < 0) + ret = nr; + else + ret += nr; + } + return ret; +} diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index b7ebc4fa89bc..3b3ffd439cd7 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -304,9 +304,14 @@ int page_is_ram(unsigned long pagenr) for (i = 0; i < boot_mem_map.nr_map; i++) { unsigned long addr, end; - if (boot_mem_map.map[i].type != BOOT_MEM_RAM) + switch (boot_mem_map.map[i].type) { + case BOOT_MEM_RAM: + case BOOT_MEM_INIT_RAM: + break; + default: /* not usable memory */ continue; + } addr = PFN_UP(boot_mem_map.map[i].addr); end = PFN_DOWN(boot_mem_map.map[i].addr + @@ -379,7 +384,7 @@ void __init mem_init(void) reservedpages = ram = 0; for (tmp = 0; tmp < max_low_pfn; tmp++) - if (page_is_ram(tmp)) { + if (page_is_ram(tmp) && pfn_valid(tmp)) { ram++; if (PageReserved(pfn_to_page(tmp))) reservedpages++; diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index d163455552b0..2dc625346c40 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -121,22 +121,30 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, if (cpu_context(cpu, mm) != 0) { unsigned long size, flags; + int huge = is_vm_hugetlb_page(vma); ENTER_CRITICAL(flags); - size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT; - size = (size + 1) >> 1; + if (huge) { + start = round_down(start, HPAGE_SIZE); + end = round_up(end, HPAGE_SIZE); + size = (end - start) >> HPAGE_SHIFT; + } else { + start = round_down(start, PAGE_SIZE << 1); + end = round_up(end, PAGE_SIZE << 1); + size = (end - start) >> (PAGE_SHIFT + 1); + } if (size <= current_cpu_data.tlbsize/2) { int oldpid = read_c0_entryhi(); int newpid = cpu_asid(cpu, mm); - start &= (PAGE_MASK << 1); - end += ((PAGE_SIZE << 1) - 1); - end &= (PAGE_MASK << 1); while (start < end) { int idx; write_c0_entryhi(start | newpid); - start += (PAGE_SIZE << 1); + if (huge) + start += HPAGE_SIZE; + else + start += (PAGE_SIZE << 1); mtc0_tlbw_hazard(); tlb_probe(); tlb_probe_hazard(); @@ -369,51 +377,6 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1, EXIT_CRITICAL(flags); } -/* - * Used for loading TLB entries before trap_init() has started, when we - * don't actually want to add a wired entry which remains throughout the - * lifetime of the system - */ - -static int temp_tlb_entry __cpuinitdata; - -__init int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1, - unsigned long entryhi, unsigned long pagemask) -{ - int ret = 0; - unsigned long flags; - unsigned long wired; - unsigned long old_pagemask; - unsigned long old_ctx; - - ENTER_CRITICAL(flags); - /* Save old context and create impossible VPN2 value */ - old_ctx = read_c0_entryhi(); - old_pagemask = read_c0_pagemask(); - wired = read_c0_wired(); - if (--temp_tlb_entry < wired) { - printk(KERN_WARNING - "No TLB space left for add_temporary_entry\n"); - ret = -ENOSPC; - goto out; - } - - write_c0_index(temp_tlb_entry); - write_c0_pagemask(pagemask); - write_c0_entryhi(entryhi); - write_c0_entrylo0(entrylo0); - write_c0_entrylo1(entrylo1); - mtc0_tlbw_hazard(); - tlb_write_indexed(); - tlbw_use_hazard(); - - write_c0_entryhi(old_ctx); - write_c0_pagemask(old_pagemask); -out: - EXIT_CRITICAL(flags); - return ret; -} - static int __cpuinitdata ntlb; static int __init set_ntlb(char *str) { @@ -451,8 +414,6 @@ void __cpuinit tlb_init(void) write_c0_pagegrain(pg); } - temp_tlb_entry = current_cpu_data.tlbsize - 1; - /* From this point on the ARC firmware is dead. */ local_flush_tlb_all(); diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c index d53ff91b277c..a588b5cef8d2 100644 --- a/arch/mips/mti-malta/malta-int.c +++ b/arch/mips/mti-malta/malta-int.c @@ -322,13 +322,13 @@ static irqreturn_t ipi_call_interrupt(int irq, void *dev_id) static struct irqaction irq_resched = { .handler = ipi_resched_interrupt, - .flags = IRQF_DISABLED|IRQF_PERCPU, + .flags = IRQF_PERCPU, .name = "IPI_resched" }; static struct irqaction irq_call = { .handler = ipi_call_interrupt, - .flags = IRQF_DISABLED|IRQF_PERCPU, + .flags = IRQF_PERCPU, .name = "IPI_call" }; #endif /* CONFIG_MIPS_MT_SMP */ diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c index 8fbfbf2b931c..389bf669d56e 100644 --- a/arch/mips/pci/ops-pmcmsp.c +++ b/arch/mips/pci/ops-pmcmsp.c @@ -405,7 +405,7 @@ int msp_pcibios_config_access(unsigned char access_type, if (pciirqflag == 0) { ret = request_irq(MSP_INT_PCI,/* Hardcoded internal MSP7120 wiring */ bpci_interrupt, - IRQF_SHARED | IRQF_DISABLED, + IRQF_SHARED, "PMC MSP PCI Host", preg); if (ret != 0) diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c index 6a3bdb5ffa80..02d64f77e967 100644 --- a/arch/mips/pci/ops-tx3927.c +++ b/arch/mips/pci/ops-tx3927.c @@ -225,7 +225,7 @@ void __init tx3927_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX3927_IR_PCI, tx3927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 0, "PCI error", (void *)TX3927_PCIC_REG)) printk(KERN_WARNING "Failed to request irq for PCIERR\n"); } diff --git a/arch/mips/pci/pci-tx4927.c b/arch/mips/pci/pci-tx4927.c index a5807406a7f1..a032ae0a533d 100644 --- a/arch/mips/pci/pci-tx4927.c +++ b/arch/mips/pci/pci-tx4927.c @@ -85,7 +85,7 @@ void __init tx4927_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX4927_IR_PCIERR, tx4927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 0, "PCI error", (void *)TX4927_PCIC_REG)) printk(KERN_WARNING "Failed to request irq for PCIERR\n"); } diff --git a/arch/mips/pci/pci-tx4938.c b/arch/mips/pci/pci-tx4938.c index 20e45f30b2ef..141bba562488 100644 --- a/arch/mips/pci/pci-tx4938.c +++ b/arch/mips/pci/pci-tx4938.c @@ -136,7 +136,7 @@ void __init tx4938_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX4938_IR_PCIERR, tx4927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 0, "PCI error", (void *)TX4927_PCIC_REG)) printk(KERN_WARNING "Failed to request irq for PCIERR\n"); } diff --git a/arch/mips/pci/pci-tx4939.c b/arch/mips/pci/pci-tx4939.c index 9ef840693baf..c10fbf2a19dc 100644 --- a/arch/mips/pci/pci-tx4939.c +++ b/arch/mips/pci/pci-tx4939.c @@ -101,7 +101,7 @@ void __init tx4939_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX4939_IR_PCIERR, tx4927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 0, "PCI error", (void *)TX4939_PCIC_REG)) pr_warning("Failed to request irq for PCIERR\n"); } diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c index 41af7fa2887b..8ac0d4841852 100644 --- a/arch/mips/pci/pci.c +++ b/arch/mips/pci/pci.c @@ -4,8 +4,11 @@ * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * - * Copyright (C) 2003, 04 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2003, 04, 11 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2011 Wind River Systems, + * written by Ralf Baechle (ralf@linux-mips.org) */ +#include <linux/bug.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/bootmem.h> @@ -14,6 +17,8 @@ #include <linux/types.h> #include <linux/pci.h> +#include <asm/cpu-info.h> + /* * Indicate whether we respect the PCI setup left by the firmware. * @@ -150,10 +155,32 @@ out: "Skipping PCI bus scan due to resource conflict\n"); } +static void __init pcibios_set_cache_line_size(void) +{ + struct cpuinfo_mips *c = ¤t_cpu_data; + unsigned int lsize; + + /* + * Set PCI cacheline size to that of the highest level in the + * cache hierarchy. + */ + lsize = c->dcache.linesz; + lsize = c->scache.linesz ? : lsize; + lsize = c->tcache.linesz ? : lsize; + + BUG_ON(!lsize); + + pci_dfl_cache_line_size = lsize >> 2; + + pr_debug("PCI: pci_cache_line_size set to %d bytes\n", lsize); +} + static int __init pcibios_init(void) { struct pci_controller *hose; + pcibios_set_cache_line_size(); + /* Scan all of the recorded PCI controllers. */ for (hose = hose_head; hose; hose = hose->next) pcibios_scanbus(hose); diff --git a/arch/mips/pmc-sierra/msp71xx/msp_hwbutton.c b/arch/mips/pmc-sierra/msp71xx/msp_hwbutton.c index c841f083a7f5..bb57ed9ea2bd 100644 --- a/arch/mips/pmc-sierra/msp71xx/msp_hwbutton.c +++ b/arch/mips/pmc-sierra/msp71xx/msp_hwbutton.c @@ -149,7 +149,7 @@ static int msp_hwbutton_register(struct hwbutton_interrupt *hirq) CIC_EXT_SET_ACTIVE_HI(cic_ext, hirq->eirq); *CIC_EXT_CFG_REG = cic_ext; - return request_irq(hirq->irq, hwbutton_handler, IRQF_DISABLED, + return request_irq(hirq->irq, hwbutton_handler, 0, hirq->name, hirq); } diff --git a/arch/mips/pmc-sierra/msp71xx/msp_smp.c b/arch/mips/pmc-sierra/msp71xx/msp_smp.c index bec17901ff03..10170580a2de 100644 --- a/arch/mips/pmc-sierra/msp71xx/msp_smp.c +++ b/arch/mips/pmc-sierra/msp71xx/msp_smp.c @@ -51,13 +51,13 @@ static irqreturn_t ipi_call_interrupt(int irq, void *dev_id) static struct irqaction irq_resched = { .handler = ipi_resched_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU, + .flags = IRQF_PERCPU, .name = "IPI_resched" }; static struct irqaction irq_call = { .handler = ipi_call_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU, + .flags = IRQF_PERCPU, .name = "IPI_call" }; diff --git a/arch/mips/pnx8550/common/int.c b/arch/mips/pnx8550/common/int.c index 1ebe22bdadc8..ec684b8c3f79 100644 --- a/arch/mips/pnx8550/common/int.c +++ b/arch/mips/pnx8550/common/int.c @@ -167,13 +167,13 @@ static struct irq_chip level_irq_type = { static struct irqaction gic_action = { .handler = no_action, - .flags = IRQF_DISABLED | IRQF_NO_THREAD, + .flags = IRQF_NO_THREAD, .name = "GIC", }; static struct irqaction timer_action = { .handler = no_action, - .flags = IRQF_DISABLED | IRQF_TIMER, + .flags = IRQF_TIMER, .name = "Timer", }; diff --git a/arch/mips/pnx8550/common/time.c b/arch/mips/pnx8550/common/time.c index 8836c6203df0..831d6b369e9c 100644 --- a/arch/mips/pnx8550/common/time.c +++ b/arch/mips/pnx8550/common/time.c @@ -59,7 +59,7 @@ static irqreturn_t pnx8xxx_timer_interrupt(int irq, void *dev_id) static struct irqaction pnx8xxx_timer_irq = { .handler = pnx8xxx_timer_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER, + .flags = IRQF_PERCPU | IRQF_TIMER, .name = "pnx8xxx_timer", }; @@ -72,7 +72,7 @@ static irqreturn_t monotonic_interrupt(int irq, void *dev_id) static struct irqaction monotonic_irqaction = { .handler = monotonic_interrupt, - .flags = IRQF_DISABLED | IRQF_TIMER, + .flags = IRQF_TIMER, .name = "Monotonic timer", }; diff --git a/arch/mips/sgi-ip22/Makefile b/arch/mips/sgi-ip22/Makefile index cc538493cae1..411cda9ee030 100644 --- a/arch/mips/sgi-ip22/Makefile +++ b/arch/mips/sgi-ip22/Makefile @@ -4,7 +4,7 @@ # obj-y += ip22-mc.o ip22-hpc.o ip22-int.o ip22-time.o ip22-nvram.o \ - ip22-platform.o ip22-reset.o ip22-setup.o + ip22-platform.o ip22-reset.o ip22-setup.o ip22-gio.o obj-$(CONFIG_SGI_IP22) += ip22-berr.o obj-$(CONFIG_SGI_IP28) += ip28-berr.o diff --git a/arch/mips/sgi-ip22/ip22-gio.c b/arch/mips/sgi-ip22/ip22-gio.c new file mode 100644 index 000000000000..f5ebc092aed5 --- /dev/null +++ b/arch/mips/sgi-ip22/ip22-gio.c @@ -0,0 +1,428 @@ +#include <linux/export.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/slab.h> + +#include <asm/addrspace.h> +#include <asm/paccess.h> +#include <asm/gio_device.h> +#include <asm/sgi/gio.h> +#include <asm/sgi/hpc3.h> +#include <asm/sgi/mc.h> +#include <asm/sgi/ip22.h> + +static struct bus_type gio_bus_type; + +static struct { + const char *name; + __u8 id; +} gio_name_table[] = { + { .name = "SGI Impact", .id = 0x10 }, + { .name = "Phobos G160", .id = 0x35 }, + /* fake IDs */ + { .name = "SGI Newport", .id = 0x7e }, + { .name = "SGI GR2/GR3", .id = 0x7f }, +}; + +static struct device gio_bus = { + .init_name = "gio", +}; + +/** + * gio_match_device - Tell if an of_device structure has a matching + * gio_match structure + * @ids: array of of device match structures to search in + * @dev: the of device structure to match against + * + * Used by a driver to check whether an of_device present in the + * system is in its list of supported devices. + */ +const struct gio_device_id *gio_match_device(const struct gio_device_id *match, + const struct gio_device *dev) +{ + const struct gio_device_id *ids; + + for (ids = match; ids->id != 0xff; ids++) + if (ids->id == dev->id.id) + return ids; + + return NULL; +} +EXPORT_SYMBOL_GPL(gio_match_device); + +struct gio_device *gio_dev_get(struct gio_device *dev) +{ + struct device *tmp; + + if (!dev) + return NULL; + tmp = get_device(&dev->dev); + if (tmp) + return to_gio_device(tmp); + else + return NULL; +} +EXPORT_SYMBOL_GPL(gio_dev_get); + +void gio_dev_put(struct gio_device *dev) +{ + if (dev) + put_device(&dev->dev); +} +EXPORT_SYMBOL_GPL(gio_dev_put); + +/** + * gio_release_dev - free an gio device structure when all users of it are finished. + * @dev: device that's been disconnected + * + * Will be called only by the device core when all users of this gio device are + * done. + */ +void gio_release_dev(struct device *dev) +{ + struct gio_device *giodev; + + giodev = to_gio_device(dev); + kfree(giodev); +} +EXPORT_SYMBOL_GPL(gio_release_dev); + +int gio_device_register(struct gio_device *giodev) +{ + giodev->dev.bus = &gio_bus_type; + giodev->dev.parent = &gio_bus; + return device_register(&giodev->dev); +} +EXPORT_SYMBOL_GPL(gio_device_register); + +void gio_device_unregister(struct gio_device *giodev) +{ + device_unregister(&giodev->dev); +} +EXPORT_SYMBOL_GPL(gio_device_unregister); + +static int gio_bus_match(struct device *dev, struct device_driver *drv) +{ + struct gio_device *gio_dev = to_gio_device(dev); + struct gio_driver *gio_drv = to_gio_driver(drv); + + return gio_match_device(gio_drv->id_table, gio_dev) != NULL; +} + +static int gio_device_probe(struct device *dev) +{ + int error = -ENODEV; + struct gio_driver *drv; + struct gio_device *gio_dev; + const struct gio_device_id *match; + + drv = to_gio_driver(dev->driver); + gio_dev = to_gio_device(dev); + + if (!drv->probe) + return error; + + gio_dev_get(gio_dev); + + match = gio_match_device(drv->id_table, gio_dev); + if (match) + error = drv->probe(gio_dev, match); + if (error) + gio_dev_put(gio_dev); + + return error; +} + +static int gio_device_remove(struct device *dev) +{ + struct gio_device *gio_dev = to_gio_device(dev); + struct gio_driver *drv = to_gio_driver(dev->driver); + + if (dev->driver && drv->remove) + drv->remove(gio_dev); + return 0; +} + +static int gio_device_suspend(struct device *dev, pm_message_t state) +{ + struct gio_device *gio_dev = to_gio_device(dev); + struct gio_driver *drv = to_gio_driver(dev->driver); + int error = 0; + + if (dev->driver && drv->suspend) + error = drv->suspend(gio_dev, state); + return error; +} + +static int gio_device_resume(struct device *dev) +{ + struct gio_device *gio_dev = to_gio_device(dev); + struct gio_driver *drv = to_gio_driver(dev->driver); + int error = 0; + + if (dev->driver && drv->resume) + error = drv->resume(gio_dev); + return error; +} + +static void gio_device_shutdown(struct device *dev) +{ + struct gio_device *gio_dev = to_gio_device(dev); + struct gio_driver *drv = to_gio_driver(dev->driver); + + if (dev->driver && drv->shutdown) + drv->shutdown(gio_dev); +} + +static ssize_t modalias_show(struct device *dev, struct device_attribute *a, + char *buf) +{ + struct gio_device *gio_dev = to_gio_device(dev); + int len = snprintf(buf, PAGE_SIZE, "gio:%x\n", gio_dev->id.id); + + return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; +} + +static ssize_t name_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gio_device *giodev; + + giodev = to_gio_device(dev); + return sprintf(buf, "%s", giodev->name); +} + +static ssize_t id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gio_device *giodev; + + giodev = to_gio_device(dev); + return sprintf(buf, "%x", giodev->id.id); +} + +static struct device_attribute gio_dev_attrs[] = { + __ATTR_RO(modalias), + __ATTR_RO(name), + __ATTR_RO(id), + __ATTR_NULL, +}; + +static int gio_device_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct gio_device *gio_dev = to_gio_device(dev); + + add_uevent_var(env, "MODALIAS=gio:%x", gio_dev->id.id); + return 0; +} + +int gio_register_driver(struct gio_driver *drv) +{ + /* initialize common driver fields */ + if (!drv->driver.name) + drv->driver.name = drv->name; + if (!drv->driver.owner) + drv->driver.owner = drv->owner; + drv->driver.bus = &gio_bus_type; + + /* register with core */ + return driver_register(&drv->driver); +} +EXPORT_SYMBOL_GPL(gio_register_driver); + +void gio_unregister_driver(struct gio_driver *drv) +{ + driver_unregister(&drv->driver); +} +EXPORT_SYMBOL_GPL(gio_unregister_driver); + +void gio_set_master(struct gio_device *dev) +{ + u32 tmp = sgimc->giopar; + + switch (dev->slotno) { + case 0: + tmp |= SGIMC_GIOPAR_MASTERGFX; + break; + case 1: + tmp |= SGIMC_GIOPAR_MASTEREXP0; + break; + case 2: + tmp |= SGIMC_GIOPAR_MASTEREXP1; + break; + } + sgimc->giopar = tmp; +} +EXPORT_SYMBOL_GPL(gio_set_master); + +void ip22_gio_set_64bit(int slotno) +{ + u32 tmp = sgimc->giopar; + + switch (slotno) { + case 0: + tmp |= SGIMC_GIOPAR_GFX64; + break; + case 1: + tmp |= SGIMC_GIOPAR_EXP064; + break; + case 2: + tmp |= SGIMC_GIOPAR_EXP164; + break; + } + sgimc->giopar = tmp; +} + +static int ip22_gio_id(unsigned long addr, u32 *res) +{ + u8 tmp8; + u8 tmp16; + u32 tmp32; + u8 *ptr8; + u16 *ptr16; + u32 *ptr32; + + ptr32 = (void *)CKSEG1ADDR(addr); + if (!get_dbe(tmp32, ptr32)) { + /* + * We got no DBE, but this doesn't mean anything. + * If GIO is pipelined (which can't be disabled + * for GFX slot) we don't get a DBE, but we see + * the transfer size as data. So we do an 8bit + * and a 16bit access and check whether the common + * data matches + */ + ptr8 = (void *)CKSEG1ADDR(addr + 3); + get_dbe(tmp8, ptr8); + ptr16 = (void *)CKSEG1ADDR(addr + 2); + get_dbe(tmp16, ptr16); + if (tmp8 == (tmp16 & 0xff) && + tmp8 == (tmp32 & 0xff) && + tmp16 == (tmp32 & 0xffff)) { + *res = tmp32; + return 1; + } + } + return 0; /* nothing here */ +} + +#define HQ2_MYSTERY_OFFS 0x6A07C +#define NEWPORT_USTATUS_OFFS 0xF133C + +static int ip22_is_gr2(unsigned long addr) +{ + u32 tmp; + u32 *ptr; + + /* HQ2 only allows 32bit accesses */ + ptr = (void *)CKSEG1ADDR(addr + HQ2_MYSTERY_OFFS); + if (!get_dbe(tmp, ptr)) { + if (tmp == 0xdeadbeef) + return 1; + } + return 0; +} + + +static void ip22_check_gio(int slotno, unsigned long addr) +{ + const char *name = "Unknown"; + struct gio_device *gio_dev; + u32 tmp; + __u8 id; + int i; + + /* first look for GR2/GR3 by checking mystery register */ + if (ip22_is_gr2(addr)) + tmp = 0x7f; + else { + if (!ip22_gio_id(addr, &tmp)) { + /* + * no GIO signature at start address of slot, but + * Newport doesn't have one, so let's check usea + * status register + */ + if (ip22_gio_id(addr + NEWPORT_USTATUS_OFFS, &tmp)) + tmp = 0x7e; + else + tmp = 0; + } + } + if (tmp) { + id = GIO_ID(tmp); + if (tmp & GIO_32BIT_ID) { + if (tmp & GIO_64BIT_IFACE) + ip22_gio_set_64bit(slotno); + } + for (i = 0; i < ARRAY_SIZE(gio_name_table); i++) { + if (id == gio_name_table[i].id) { + name = gio_name_table[i].name; + break; + } + } + printk(KERN_INFO "GIO: slot %d : %s (id %x)\n", + slotno, name, id); + gio_dev = kzalloc(sizeof *gio_dev, GFP_KERNEL); + gio_dev->name = name; + gio_dev->slotno = slotno; + gio_dev->id.id = id; + gio_dev->resource.start = addr; + gio_dev->resource.end = addr + 0x3fffff; + gio_dev->resource.flags = IORESOURCE_MEM; + dev_set_name(&gio_dev->dev, "%d", slotno); + gio_device_register(gio_dev); + } else + printk(KERN_INFO "GIO: slot %d : Empty\n", slotno); +} + +static struct bus_type gio_bus_type = { + .name = "gio", + .dev_attrs = gio_dev_attrs, + .match = gio_bus_match, + .probe = gio_device_probe, + .remove = gio_device_remove, + .suspend = gio_device_suspend, + .resume = gio_device_resume, + .shutdown = gio_device_shutdown, + .uevent = gio_device_uevent, +}; + +static struct resource gio_bus_resource = { + .start = GIO_SLOT_GFX_BASE, + .end = GIO_SLOT_GFX_BASE + 0x9fffff, + .name = "GIO Bus", + .flags = IORESOURCE_MEM, +}; + +int __init ip22_gio_init(void) +{ + unsigned int pbdma __maybe_unused; + int ret; + + ret = device_register(&gio_bus); + if (ret) + return ret; + + ret = bus_register(&gio_bus_type); + if (!ret) { + request_resource(&iomem_resource, &gio_bus_resource); + printk(KERN_INFO "GIO: Probing bus...\n"); + + if (ip22_is_fullhouse() || + !get_dbe(pbdma, (unsigned int *)&hpc3c1->pbdma[1])) { + /* Indigo2 and ChallengeS */ + ip22_check_gio(0, GIO_SLOT_GFX_BASE); + ip22_check_gio(1, GIO_SLOT_EXP0_BASE); + } else { + /* Indy */ + ip22_check_gio(0, GIO_SLOT_GFX_BASE); + ip22_check_gio(1, GIO_SLOT_EXP0_BASE); + ip22_check_gio(2, GIO_SLOT_EXP1_BASE); + } + } else + device_unregister(&gio_bus); + + return ret; +} + +subsys_initcall(ip22_gio_init); diff --git a/arch/mips/sgi-ip22/ip22-int.c b/arch/mips/sgi-ip22/ip22-int.c index f72c336ea27b..3f2b7633f946 100644 --- a/arch/mips/sgi-ip22/ip22-int.c +++ b/arch/mips/sgi-ip22/ip22-int.c @@ -155,32 +155,32 @@ static void __irq_entry indy_buserror_irq(void) static struct irqaction local0_cascade = { .handler = no_action, - .flags = IRQF_DISABLED | IRQF_NO_THREAD, + .flags = IRQF_NO_THREAD, .name = "local0 cascade", }; static struct irqaction local1_cascade = { .handler = no_action, - .flags = IRQF_DISABLED | IRQF_NO_THREAD, + .flags = IRQF_NO_THREAD, .name = "local1 cascade", }; static struct irqaction buserr = { .handler = no_action, - .flags = IRQF_DISABLED | IRQF_NO_THREAD, + .flags = IRQF_NO_THREAD, .name = "Bus Error", }; static struct irqaction map0_cascade = { .handler = no_action, - .flags = IRQF_DISABLED | IRQF_NO_THREAD, + .flags = IRQF_NO_THREAD, .name = "mapable0 cascade", }; #ifdef USE_LIO3_IRQ static struct irqaction map1_cascade = { .handler = no_action, - .flags = IRQF_DISABLED | IRQF_NO_THREAD, + .flags = IRQF_NO_THREAD, .name = "mapable1 cascade", }; #define SGI_INTERRUPTS SGINT_END diff --git a/arch/mips/sgi-ip22/ip22-mc.c b/arch/mips/sgi-ip22/ip22-mc.c index d22262ee6853..75ada8a9713b 100644 --- a/arch/mips/sgi-ip22/ip22-mc.c +++ b/arch/mips/sgi-ip22/ip22-mc.c @@ -139,11 +139,11 @@ void __init sgimc_init(void) * zero. */ /* don't touch parity settings for IP28 */ -#ifndef CONFIG_SGI_IP28 tmp = sgimc->cpuctrl0; - tmp |= (SGIMC_CCTRL0_EPERRGIO | SGIMC_CCTRL0_EPERRMEM | - SGIMC_CCTRL0_R4KNOCHKPARR); +#ifndef CONFIG_SGI_IP28 + tmp |= SGIMC_CCTRL0_EPERRGIO | SGIMC_CCTRL0_EPERRMEM; #endif + tmp |= SGIMC_CCTRL0_R4KNOCHKPARR; sgimc->cpuctrl0 = tmp; /* Step 3: Setup the MC write buffer depth, this is controlled @@ -178,7 +178,8 @@ void __init sgimc_init(void) */ /* First the basic invariants across all GIO64 implementations. */ - tmp = SGIMC_GIOPAR_HPC64; /* All 1st HPC's interface at 64bits */ + tmp = sgimc->giopar & SGIMC_GIOPAR_GFX64; /* keep gfx 64bit settings */ + tmp |= SGIMC_GIOPAR_HPC64; /* All 1st HPC's interface at 64bits */ tmp |= SGIMC_GIOPAR_ONEBUS; /* Only one physical GIO bus exists */ if (ip22_is_fullhouse()) { @@ -193,7 +194,6 @@ void __init sgimc_init(void) tmp |= SGIMC_GIOPAR_PLINEEXP0; /* exp[01] pipelined */ tmp |= SGIMC_GIOPAR_PLINEEXP1; tmp |= SGIMC_GIOPAR_MASTEREISA; /* EISA masters */ - tmp |= SGIMC_GIOPAR_GFX64; /* GFX at 64 bits */ } } else { /* Guiness specific settings. */ diff --git a/arch/mips/sgi-ip22/ip22-setup.c b/arch/mips/sgi-ip22/ip22-setup.c index 5e6621349471..c7bdfe43df5b 100644 --- a/arch/mips/sgi-ip22/ip22-setup.c +++ b/arch/mips/sgi-ip22/ip22-setup.c @@ -26,9 +26,6 @@ #include <asm/sgi/hpc3.h> #include <asm/sgi/ip22.h> -unsigned long sgi_gfxaddr; -EXPORT_SYMBOL_GPL(sgi_gfxaddr); - extern void ip22_be_init(void) __init; void __init plat_mem_setup(void) @@ -78,22 +75,4 @@ void __init plat_mem_setup(void) prom_flags |= PROM_FLAG_USE_AS_CONSOLE; add_preferred_console("arc", 0, NULL); } - -#if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE) - { - ULONG *gfxinfo; - ULONG * (*__vec)(void) = (void *) (long) - *((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20)); - - gfxinfo = __vec(); - sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000 - && gfxinfo[1] <= 0xc0000000) - ? gfxinfo[1] - 0xa0000000 : 0); - - /* newport addresses? */ - if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) { - conswitchp = &newport_con; - } - } -#endif } diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c index ec3782d31894..23642238c689 100644 --- a/arch/mips/sgi-ip27/ip27-irq.c +++ b/arch/mips/sgi-ip27/ip27-irq.c @@ -116,7 +116,7 @@ static int ms1bit(unsigned long x) } /* - * This code is unnecessarily complex, because we do IRQF_DISABLED + * This code is unnecessarily complex, because we do * intr enabling. Basically, once we grab the set of intrs we need * to service, we must mask _all_ these interrupts; firstly, to make * sure the same intr does not intr again, causing recursion that diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c index ef74f3267f91..13cfeab50528 100644 --- a/arch/mips/sgi-ip27/ip27-timer.c +++ b/arch/mips/sgi-ip27/ip27-timer.c @@ -91,7 +91,7 @@ static irqreturn_t hub_rt_counter_handler(int irq, void *dev_id) struct irqaction hub_rt_irqaction = { .handler = hub_rt_counter_handler, - .flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER, + .flags = IRQF_PERCPU | IRQF_TIMER, .name = "hub-rt", }; diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c index c65ea76d56c7..a092860d5196 100644 --- a/arch/mips/sgi-ip32/ip32-irq.c +++ b/arch/mips/sgi-ip32/ip32-irq.c @@ -113,13 +113,11 @@ extern irqreturn_t crime_cpuerr_intr(int irq, void *dev_id); static struct irqaction memerr_irq = { .handler = crime_memerr_intr, - .flags = IRQF_DISABLED, .name = "CRIME memory error", }; static struct irqaction cpuerr_irq = { .handler = crime_cpuerr_intr, - .flags = IRQF_DISABLED, .name = "CRIME CPU error", }; diff --git a/arch/mips/sni/irq.c b/arch/mips/sni/irq.c index e8e72bb3a9af..5a4ec75382e2 100644 --- a/arch/mips/sni/irq.c +++ b/arch/mips/sni/irq.c @@ -42,7 +42,7 @@ static irqreturn_t sni_isa_irq_handler(int dummy, void *p) struct irqaction sni_isa_irq = { .handler = sni_isa_irq_handler, .name = "ISA", - .flags = IRQF_SHARED | IRQF_DISABLED + .flags = IRQF_SHARED }; /* diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c index ec0be14996a4..494c9e7847aa 100644 --- a/arch/mips/sni/time.c +++ b/arch/mips/sni/time.c @@ -68,7 +68,7 @@ static irqreturn_t a20r_interrupt(int irq, void *dev_id) static struct irqaction a20r_irqaction = { .handler = a20r_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU | IRQF_TIMER, + .flags = IRQF_PERCPU | IRQF_TIMER, .name = "a20r-timer", }; diff --git a/arch/mips/txx9/generic/pci.c b/arch/mips/txx9/generic/pci.c index 85a87de17eb4..682efb0c108d 100644 --- a/arch/mips/txx9/generic/pci.c +++ b/arch/mips/txx9/generic/pci.c @@ -262,7 +262,7 @@ txx9_i8259_irq_setup(int irq) int err; init_i8259_irqs(); - err = request_irq(irq, &i8259_interrupt, IRQF_DISABLED|IRQF_SHARED, + err = request_irq(irq, &i8259_interrupt, IRQF_SHARED, "cascade(i8259)", (void *)(long)irq); if (!err) printk(KERN_INFO "PCI-ISA bridge PIC (irq %d)\n", irq); diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c index 93317b5b8740..a122d9287d16 100644 --- a/drivers/video/console/newport_con.c +++ b/drivers/video/console/newport_con.c @@ -25,14 +25,13 @@ #include <asm/system.h> #include <asm/page.h> #include <asm/pgtable.h> +#include <asm/gio_device.h> + #include <video/newport.h> #include <linux/linux_logo.h> #include <linux/font.h> - -extern unsigned long sgi_gfxaddr; - #define FONT_DATA ((unsigned char *)font_vga_8x16.data) /* borrowed from fbcon.c */ @@ -304,12 +303,6 @@ static const char *newport_startup(void) { int i; - if (!sgi_gfxaddr) - return NULL; - - if (!npregs) - npregs = (struct newport_regs *)/* ioremap cannot fail */ - ioremap(sgi_gfxaddr, sizeof(struct newport_regs)); npregs->cset.config = NPORT_CFG_GD0; if (newport_wait(npregs)) @@ -743,26 +736,58 @@ const struct consw newport_con = { .con_save_screen = DUMMY }; -#ifdef MODULE -static int __init newport_console_init(void) +static int newport_probe(struct gio_device *dev, + const struct gio_device_id *id) { - if (!sgi_gfxaddr) - return 0; + unsigned long newport_addr; - if (!npregs) - npregs = (struct newport_regs *)/* ioremap cannot fail */ - ioremap(sgi_gfxaddr, sizeof(struct newport_regs)); + if (!dev->resource.start) + return -EINVAL; + + if (npregs) + return -EBUSY; /* we only support one Newport as console */ + + newport_addr = dev->resource.start + 0xF0000; + if (!request_mem_region(newport_addr, 0x10000, "Newport")) + return -ENODEV; + + npregs = (struct newport_regs *)/* ioremap cannot fail */ + ioremap(newport_addr, sizeof(struct newport_regs)); return take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); } -module_init(newport_console_init); -static void __exit newport_console_exit(void) +static void newport_remove(struct gio_device *dev) { give_up_console(&newport_con); iounmap((void *)npregs); } + +static struct gio_device_id newport_ids[] = { + { .id = 0x7e }, + { .id = 0xff } +}; + +MODULE_ALIAS("gio:7e"); + +static struct gio_driver newport_driver = { + .name = "newport", + .id_table = newport_ids, + .probe = newport_probe, + .remove = newport_remove, +}; + +int __init newport_console_init(void) +{ + return gio_register_driver(&newport_driver); +} + +void __exit newport_console_exit(void) +{ + gio_unregister_driver(&newport_driver); +} + +module_init(newport_console_init); module_exit(newport_console_exit); -#endif MODULE_LICENSE("GPL"); |