sparc32: use void * in nocache get/free
This allowed to us to kill a lot of casts, with no loss of readability in any places Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
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605ae96240
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f71a2aacc6
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@ -18,8 +18,8 @@ extern struct pgtable_cache_struct {
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unsigned long pgd_cache_sz;
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} pgt_quicklists;
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unsigned long srmmu_get_nocache(int size, int align);
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void srmmu_free_nocache(unsigned long vaddr, int size);
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void *srmmu_get_nocache(int size, int align);
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void srmmu_free_nocache(void *addr, int size);
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#define pgd_quicklist (pgt_quicklists.pgd_cache)
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#define pmd_quicklist ((unsigned long *)0)
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@ -32,7 +32,7 @@ void srmmu_free_nocache(unsigned long vaddr, int size);
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pgd_t *get_pgd_fast(void);
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static inline void free_pgd_fast(pgd_t *pgd)
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{
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srmmu_free_nocache((unsigned long)pgd, SRMMU_PGD_TABLE_SIZE);
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srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
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}
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#define pgd_free(mm, pgd) free_pgd_fast(pgd)
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@ -50,13 +50,13 @@ static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
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unsigned long address)
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{
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return (pmd_t *)srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
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SRMMU_PMD_TABLE_SIZE);
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return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
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SRMMU_PMD_TABLE_SIZE);
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}
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static inline void free_pmd_fast(pmd_t * pmd)
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{
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srmmu_free_nocache((unsigned long)pmd, SRMMU_PMD_TABLE_SIZE);
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srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
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}
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#define pmd_free(mm, pmd) free_pmd_fast(pmd)
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@ -73,13 +73,13 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address);
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
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unsigned long address)
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{
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return (pte_t *)srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
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return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
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}
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static inline void free_pte_fast(pte_t *pte)
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{
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srmmu_free_nocache((unsigned long)pte, PTE_SIZE);
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srmmu_free_nocache(pte, PTE_SIZE);
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}
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#define pte_free_kernel(mm, pte) free_pte_fast(pte)
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@ -151,49 +151,55 @@ pte_t *pte_offset_kernel(pmd_t *dir, unsigned long address)
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* align: bytes, number to align at.
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* Returns the virtual address of the allocated area.
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*/
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static unsigned long __srmmu_get_nocache(int size, int align)
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static void *__srmmu_get_nocache(int size, int align)
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{
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int offset;
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unsigned long addr;
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if (size < SRMMU_NOCACHE_BITMAP_SHIFT) {
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printk("Size 0x%x too small for nocache request\n", size);
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printk(KERN_ERR "Size 0x%x too small for nocache request\n",
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size);
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size = SRMMU_NOCACHE_BITMAP_SHIFT;
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}
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if (size & (SRMMU_NOCACHE_BITMAP_SHIFT-1)) {
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printk("Size 0x%x unaligned int nocache request\n", size);
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size += SRMMU_NOCACHE_BITMAP_SHIFT-1;
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if (size & (SRMMU_NOCACHE_BITMAP_SHIFT - 1)) {
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printk(KERN_ERR "Size 0x%x unaligned int nocache request\n",
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size);
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size += SRMMU_NOCACHE_BITMAP_SHIFT - 1;
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}
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BUG_ON(align > SRMMU_NOCACHE_ALIGN_MAX);
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offset = bit_map_string_get(&srmmu_nocache_map,
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size >> SRMMU_NOCACHE_BITMAP_SHIFT,
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align >> SRMMU_NOCACHE_BITMAP_SHIFT);
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size >> SRMMU_NOCACHE_BITMAP_SHIFT,
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align >> SRMMU_NOCACHE_BITMAP_SHIFT);
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if (offset == -1) {
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printk("srmmu: out of nocache %d: %d/%d\n",
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size, (int) srmmu_nocache_size,
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srmmu_nocache_map.used << SRMMU_NOCACHE_BITMAP_SHIFT);
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printk(KERN_ERR "srmmu: out of nocache %d: %d/%d\n",
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size, (int) srmmu_nocache_size,
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srmmu_nocache_map.used << SRMMU_NOCACHE_BITMAP_SHIFT);
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return 0;
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}
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return (SRMMU_NOCACHE_VADDR + (offset << SRMMU_NOCACHE_BITMAP_SHIFT));
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addr = SRMMU_NOCACHE_VADDR + (offset << SRMMU_NOCACHE_BITMAP_SHIFT);
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return (void *)addr;
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}
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unsigned long srmmu_get_nocache(int size, int align)
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void *srmmu_get_nocache(int size, int align)
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{
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unsigned long tmp;
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void *tmp;
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tmp = __srmmu_get_nocache(size, align);
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if (tmp)
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memset((void *)tmp, 0, size);
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memset(tmp, 0, size);
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return tmp;
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}
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void srmmu_free_nocache(unsigned long vaddr, int size)
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void srmmu_free_nocache(void *addr, int size)
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{
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unsigned long vaddr;
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int offset;
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vaddr = (unsigned long)addr;
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if (vaddr < SRMMU_NOCACHE_VADDR) {
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printk("Vaddr %lx is smaller than nocache base 0x%lx\n",
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vaddr, (unsigned long)SRMMU_NOCACHE_VADDR);
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@ -271,7 +277,7 @@ static void __init srmmu_nocache_init(void)
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srmmu_nocache_bitmap = __alloc_bootmem(bitmap_bits >> 3, SMP_CACHE_BYTES, 0UL);
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bit_map_init(&srmmu_nocache_map, srmmu_nocache_bitmap, bitmap_bits);
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srmmu_swapper_pg_dir = (pgd_t *)__srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE);
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srmmu_swapper_pg_dir = __srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE);
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memset(__nocache_fix(srmmu_swapper_pg_dir), 0, SRMMU_PGD_TABLE_SIZE);
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init_mm.pgd = srmmu_swapper_pg_dir;
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@ -304,7 +310,7 @@ pgd_t *get_pgd_fast(void)
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{
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pgd_t *pgd = NULL;
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pgd = (pgd_t *)__srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE);
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pgd = __srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE);
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if (pgd) {
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pgd_t *init = pgd_offset_k(0);
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memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
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@ -344,8 +350,9 @@ void pte_free(struct mm_struct *mm, pgtable_t pte)
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if (p == 0)
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BUG();
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p = page_to_pfn(pte) << PAGE_SHIFT; /* Physical address */
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p = (unsigned long) __nocache_va(p); /* Nocached virtual */
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srmmu_free_nocache(p, PTE_SIZE);
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/* free non cached virtual address*/
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srmmu_free_nocache(__nocache_va(p), PTE_SIZE);
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}
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/*
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@ -593,7 +600,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned long start,
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while (start < end) {
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pgdp = pgd_offset_k(start);
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if (pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
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pmdp = (pmd_t *) __srmmu_get_nocache(
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pmdp = __srmmu_get_nocache(
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SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
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if (pmdp == NULL)
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early_pgtable_allocfail("pmd");
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@ -602,7 +609,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned long start,
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}
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pmdp = pmd_offset(__nocache_fix(pgdp), start);
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if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
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ptep = (pte_t *)__srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
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ptep = __srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
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if (ptep == NULL)
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early_pgtable_allocfail("pte");
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memset(__nocache_fix(ptep), 0, PTE_SIZE);
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@ -624,7 +631,7 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long start,
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while (start < end) {
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pgdp = pgd_offset_k(start);
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if (pgd_none(*pgdp)) {
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pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
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pmdp = __srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
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if (pmdp == NULL)
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early_pgtable_allocfail("pmd");
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memset(pmdp, 0, SRMMU_PMD_TABLE_SIZE);
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@ -632,7 +639,7 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long start,
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}
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pmdp = pmd_offset(pgdp, start);
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if (srmmu_pmd_none(*pmdp)) {
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ptep = (pte_t *) __srmmu_get_nocache(PTE_SIZE,
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ptep = __srmmu_get_nocache(PTE_SIZE,
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PTE_SIZE);
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if (ptep == NULL)
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early_pgtable_allocfail("pte");
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@ -707,7 +714,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
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continue;
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}
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if (pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
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pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
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pmdp = __srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
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if (pmdp == NULL)
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early_pgtable_allocfail("pmd");
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memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE);
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@ -715,7 +722,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
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}
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pmdp = pmd_offset(__nocache_fix(pgdp), start);
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if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
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ptep = (pte_t *)__srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
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ptep = __srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
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if (ptep == NULL)
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early_pgtable_allocfail("pte");
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memset(__nocache_fix(ptep), 0, PTE_SIZE);
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@ -831,11 +838,11 @@ void __init srmmu_paging_init(void)
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srmmu_nocache_calcsize();
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srmmu_nocache_init();
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srmmu_inherit_prom_mappings(0xfe400000, (LINUX_OPPROM_ENDVM-PAGE_SIZE));
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srmmu_inherit_prom_mappings(0xfe400000, (LINUX_OPPROM_ENDVM - PAGE_SIZE));
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map_kernel();
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/* ctx table has to be physically aligned to its size */
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srmmu_context_table = (ctxd_t *)__srmmu_get_nocache(num_contexts*sizeof(ctxd_t), num_contexts*sizeof(ctxd_t));
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srmmu_context_table = __srmmu_get_nocache(num_contexts * sizeof(ctxd_t), num_contexts * sizeof(ctxd_t));
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srmmu_ctx_table_phys = (ctxd_t *)__nocache_pa((unsigned long)srmmu_context_table);
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for (i = 0; i < num_contexts; i++)
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