diff options
| -rw-r--r-- | arch/ppc64/kernel/eeh.c | 2 | ||||
| -rw-r--r-- | arch/ppc64/kernel/head.S | 4 | ||||
| -rw-r--r-- | arch/ppc64/kernel/process.c | 8 | ||||
| -rw-r--r-- | arch/ppc64/mm/hash_utils.c | 4 | ||||
| -rw-r--r-- | arch/ppc64/mm/imalloc.c | 20 | ||||
| -rw-r--r-- | arch/ppc64/mm/init.c | 93 | ||||
| -rw-r--r-- | include/asm-ppc64/imalloc.h | 12 | ||||
| -rw-r--r-- | include/asm-ppc64/page.h | 2 | ||||
| -rw-r--r-- | include/asm-ppc64/pgtable.h | 9 | ||||
| -rw-r--r-- | include/asm-ppc64/processor.h | 10 |
10 files changed, 31 insertions, 133 deletions
diff --git a/arch/ppc64/kernel/eeh.c b/arch/ppc64/kernel/eeh.c index d63d41f..af5272f 100644 --- a/arch/ppc64/kernel/eeh.c +++ b/arch/ppc64/kernel/eeh.c @@ -505,7 +505,7 @@ static inline unsigned long eeh_token_to_phys(unsigned long token) pte_t *ptep; unsigned long pa; - ptep = find_linux_pte(ioremap_mm.pgd, token); + ptep = find_linux_pte(init_mm.pgd, token); if (!ptep) return token; pa = pte_pfn(*ptep) << PAGE_SHIFT; diff --git a/arch/ppc64/kernel/head.S b/arch/ppc64/kernel/head.S index 346dbf6..02c8f4e 100644 --- a/arch/ppc64/kernel/head.S +++ b/arch/ppc64/kernel/head.S @@ -2121,10 +2121,6 @@ empty_zero_page: swapper_pg_dir: .space 4096 - .globl ioremap_dir -ioremap_dir: - .space 4096 - #ifdef CONFIG_SMP /* 1 page segment table per cpu (max 48, cpu0 allocated at STAB0_PHYS_ADDR) */ .globl stab_array diff --git a/arch/ppc64/kernel/process.c b/arch/ppc64/kernel/process.c index cdfecbe..aba8955 100644 --- a/arch/ppc64/kernel/process.c +++ b/arch/ppc64/kernel/process.c @@ -58,14 +58,6 @@ struct task_struct *last_task_used_math = NULL; struct task_struct *last_task_used_altivec = NULL; #endif -struct mm_struct ioremap_mm = { - .pgd = ioremap_dir, - .mm_users = ATOMIC_INIT(2), - .mm_count = ATOMIC_INIT(1), - .cpu_vm_mask = CPU_MASK_ALL, - .page_table_lock = SPIN_LOCK_UNLOCKED, -}; - /* * Make sure the floating-point register state in the * the thread_struct is up to date for task tsk. diff --git a/arch/ppc64/mm/hash_utils.c b/arch/ppc64/mm/hash_utils.c index 0a0f970..87d0525 100644 --- a/arch/ppc64/mm/hash_utils.c +++ b/arch/ppc64/mm/hash_utils.c @@ -310,10 +310,6 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) vsid = get_vsid(mm->context.id, ea); break; - case IO_REGION_ID: - mm = &ioremap_mm; - vsid = get_kernel_vsid(ea); - break; case VMALLOC_REGION_ID: mm = &init_mm; vsid = get_kernel_vsid(ea); diff --git a/arch/ppc64/mm/imalloc.c b/arch/ppc64/mm/imalloc.c index cb8727f..b6e75b8 100644 --- a/arch/ppc64/mm/imalloc.c +++ b/arch/ppc64/mm/imalloc.c @@ -15,6 +15,7 @@ #include <asm/pgtable.h> #include <asm/semaphore.h> #include <asm/imalloc.h> +#include <asm/cacheflush.h> static DECLARE_MUTEX(imlist_sem); struct vm_struct * imlist = NULL; @@ -285,29 +286,32 @@ struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size, return area; } -unsigned long im_free(void * addr) +void im_free(void * addr) { struct vm_struct **p, *tmp; - unsigned long ret_size = 0; if (!addr) - return ret_size; - if ((PAGE_SIZE-1) & (unsigned long) addr) { + return; + if ((unsigned long) addr & ~PAGE_MASK) { printk(KERN_ERR "Trying to %s bad address (%p)\n", __FUNCTION__, addr); - return ret_size; + return; } down(&imlist_sem); for (p = &imlist ; (tmp = *p) ; p = &tmp->next) { if (tmp->addr == addr) { - ret_size = tmp->size; *p = tmp->next; + + /* XXX: do we need the lock? */ + spin_lock(&init_mm.page_table_lock); + unmap_vm_area(tmp); + spin_unlock(&init_mm.page_table_lock); + kfree(tmp); up(&imlist_sem); - return ret_size; + return; } } up(&imlist_sem); printk(KERN_ERR "Trying to %s nonexistent area (%p)\n", __FUNCTION__, addr); - return ret_size; } diff --git a/arch/ppc64/mm/init.c b/arch/ppc64/mm/init.c index 4b42aff..6fa1e64 100644 --- a/arch/ppc64/mm/init.c +++ b/arch/ppc64/mm/init.c @@ -73,9 +73,6 @@ static unsigned long phbs_io_bot = PHBS_IO_BASE; extern pgd_t swapper_pg_dir[]; extern struct task_struct *current_set[NR_CPUS]; -extern pgd_t ioremap_dir[]; -pgd_t * ioremap_pgd = (pgd_t *)&ioremap_dir; - unsigned long klimit = (unsigned long)_end; unsigned long _SDR1=0; @@ -137,69 +134,6 @@ void iounmap(volatile void __iomem *addr) #else -static void unmap_im_area_pte(pmd_t *pmd, unsigned long addr, - unsigned long end) -{ - pte_t *pte; - - pte = pte_offset_kernel(pmd, addr); - do { - pte_t ptent = ptep_get_and_clear(&ioremap_mm, addr, pte); - WARN_ON(!pte_none(ptent) && !pte_present(ptent)); - } while (pte++, addr += PAGE_SIZE, addr != end); -} - -static inline void unmap_im_area_pmd(pud_t *pud, unsigned long addr, - unsigned long end) -{ - pmd_t *pmd; - unsigned long next; - - pmd = pmd_offset(pud, addr); - do { - next = pmd_addr_end(addr, end); - if (pmd_none_or_clear_bad(pmd)) - continue; - unmap_im_area_pte(pmd, addr, next); - } while (pmd++, addr = next, addr != end); -} - -static inline void unmap_im_area_pud(pgd_t *pgd, unsigned long addr, - unsigned long end) -{ - pud_t *pud; - unsigned long next; - - pud = pud_offset(pgd, addr); - do { - next = pud_addr_end(addr, end); - if (pud_none_or_clear_bad(pud)) - continue; - unmap_im_area_pmd(pud, addr, next); - } while (pud++, addr = next, addr != end); -} - -static void unmap_im_area(unsigned long addr, unsigned long end) -{ - struct mm_struct *mm = &ioremap_mm; - unsigned long next; - pgd_t *pgd; - - spin_lock(&mm->page_table_lock); - - pgd = pgd_offset_i(addr); - flush_cache_vunmap(addr, end); - do { - next = pgd_addr_end(addr, end); - if (pgd_none_or_clear_bad(pgd)) - continue; - unmap_im_area_pud(pgd, addr, next); - } while (pgd++, addr = next, addr != end); - flush_tlb_kernel_range(start, end); - - spin_unlock(&mm->page_table_lock); -} - /* * map_io_page currently only called by __ioremap * map_io_page adds an entry to the ioremap page table @@ -214,21 +148,21 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags) unsigned long vsid; if (mem_init_done) { - spin_lock(&ioremap_mm.page_table_lock); - pgdp = pgd_offset_i(ea); - pudp = pud_alloc(&ioremap_mm, pgdp, ea); + spin_lock(&init_mm.page_table_lock); + pgdp = pgd_offset_k(ea); + pudp = pud_alloc(&init_mm, pgdp, ea); if (!pudp) return -ENOMEM; - pmdp = pmd_alloc(&ioremap_mm, pudp, ea); + pmdp = pmd_alloc(&init_mm, pudp, ea); if (!pmdp) return -ENOMEM; - ptep = pte_alloc_kernel(&ioremap_mm, pmdp, ea); + ptep = pte_alloc_kernel(&init_mm, pmdp, ea); if (!ptep) return -ENOMEM; pa = abs_to_phys(pa); - set_pte_at(&ioremap_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, + set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, __pgprot(flags))); - spin_unlock(&ioremap_mm.page_table_lock); + spin_unlock(&init_mm.page_table_lock); } else { unsigned long va, vpn, hash, hpteg; @@ -267,13 +201,9 @@ static void __iomem * __ioremap_com(unsigned long addr, unsigned long pa, for (i = 0; i < size; i += PAGE_SIZE) if (map_io_page(ea+i, pa+i, flags)) - goto failure; + return NULL; return (void __iomem *) (ea + (addr & ~PAGE_MASK)); - failure: - if (mem_init_done) - unmap_im_area(ea, ea + size); - return NULL; } @@ -381,19 +311,14 @@ int __ioremap_explicit(unsigned long pa, unsigned long ea, */ void iounmap(volatile void __iomem *token) { - unsigned long address, size; void *addr; if (!mem_init_done) return; addr = (void *) ((unsigned long __force) token & PAGE_MASK); - - if ((size = im_free(addr)) == 0) - return; - address = (unsigned long)addr; - unmap_im_area(address, address + size); + im_free(addr); } static int iounmap_subset_regions(unsigned long addr, unsigned long size) diff --git a/include/asm-ppc64/imalloc.h b/include/asm-ppc64/imalloc.h index 3a45e91..e46ff68 100644 --- a/include/asm-ppc64/imalloc.h +++ b/include/asm-ppc64/imalloc.h @@ -4,9 +4,9 @@ /* * Define the address range of the imalloc VM area. */ -#define PHBS_IO_BASE IOREGIONBASE -#define IMALLOC_BASE (IOREGIONBASE + 0x80000000ul) /* Reserve 2 gigs for PHBs */ -#define IMALLOC_END (IOREGIONBASE + EADDR_MASK) +#define PHBS_IO_BASE VMALLOC_END +#define IMALLOC_BASE (PHBS_IO_BASE + 0x80000000ul) /* Reserve 2 gigs for PHBs */ +#define IMALLOC_END (VMALLOC_START + EADDR_MASK) /* imalloc region types */ @@ -18,7 +18,9 @@ extern struct vm_struct * im_get_free_area(unsigned long size); extern struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size, - int region_type); -unsigned long im_free(void *addr); + int region_type); +extern void im_free(void *addr); + +extern unsigned long ioremap_bot; #endif /* _PPC64_IMALLOC_H */ diff --git a/include/asm-ppc64/page.h b/include/asm-ppc64/page.h index bcd2178..257d87e 100644 --- a/include/asm-ppc64/page.h +++ b/include/asm-ppc64/page.h @@ -202,9 +202,7 @@ extern u64 ppc64_pft_size; /* Log 2 of page table size */ #define PAGE_OFFSET ASM_CONST(0xC000000000000000) #define KERNELBASE PAGE_OFFSET #define VMALLOCBASE ASM_CONST(0xD000000000000000) -#define IOREGIONBASE ASM_CONST(0xE000000000000000) -#define IO_REGION_ID (IOREGIONBASE >> REGION_SHIFT) #define VMALLOC_REGION_ID (VMALLOCBASE >> REGION_SHIFT) #define KERNEL_REGION_ID (KERNELBASE >> REGION_SHIFT) #define USER_REGION_ID (0UL) diff --git a/include/asm-ppc64/pgtable.h b/include/asm-ppc64/pgtable.h index 264c4f7..46cf61c 100644 --- a/include/asm-ppc64/pgtable.h +++ b/include/asm-ppc64/pgtable.h @@ -53,7 +53,8 @@ * Define the address range of the vmalloc VM area. */ #define VMALLOC_START (0xD000000000000000ul) -#define VMALLOC_END (VMALLOC_START + EADDR_MASK) +#define VMALLOC_SIZE (0x10000000000UL) +#define VMALLOC_END (VMALLOC_START + VMALLOC_SIZE) /* * Bits in a linux-style PTE. These match the bits in the @@ -239,9 +240,6 @@ static inline pte_t pfn_pte(unsigned long pfn, pgprot_t pgprot) /* This now only contains the vmalloc pages */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) -/* to find an entry in the ioremap page-table-directory */ -#define pgd_offset_i(address) (ioremap_pgd + pgd_index(address)) - /* * The following only work if pte_present() is true. * Undefined behaviour if not.. @@ -459,15 +457,12 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long addr, #define __HAVE_ARCH_PTE_SAME #define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HPTEFLAGS) == 0) -extern unsigned long ioremap_bot, ioremap_base; - #define pmd_ERROR(e) \ printk("%s:%d: bad pmd %08x.\n", __FILE__, __LINE__, pmd_val(e)) #define pgd_ERROR(e) \ printk("%s:%d: bad pgd %08x.\n", __FILE__, __LINE__, pgd_val(e)) extern pgd_t swapper_pg_dir[]; -extern pgd_t ioremap_dir[]; extern void paging_init(void); diff --git a/include/asm-ppc64/processor.h b/include/asm-ppc64/processor.h index 809c634b..3084099 100644 --- a/include/asm-ppc64/processor.h +++ b/include/asm-ppc64/processor.h @@ -430,16 +430,6 @@ struct thread_struct { } /* - * Note: the vm_start and vm_end fields here should *not* - * be in kernel space. (Could vm_end == vm_start perhaps?) - */ -#define IOREMAP_MMAP { &ioremap_mm, 0, 0x1000, NULL, \ - PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, \ - 1, NULL, NULL } - -extern struct mm_struct ioremap_mm; - -/* * Return saved PC of a blocked thread. For now, this is the "user" PC */ #define thread_saved_pc(tsk) \ |
