From cde9070d9970eef1f7ec2360586c802a16230ad8 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:50 +0000
Subject: [PATCH] rtl88x2CE_WiFi_linux driver
---
kernel/arch/powerpc/include/asm/nohash/32/pgalloc.h | 126 ++---------------------------------------
1 files changed, 8 insertions(+), 118 deletions(-)
diff --git a/kernel/arch/powerpc/include/asm/nohash/32/pgalloc.h b/kernel/arch/powerpc/include/asm/nohash/32/pgalloc.h
index 8825953..11eac37 100644
--- a/kernel/arch/powerpc/include/asm/nohash/32/pgalloc.h
+++ b/kernel/arch/powerpc/include/asm/nohash/32/pgalloc.h
@@ -6,42 +6,6 @@
#include <linux/slab.h>
/*
- * Functions that deal with pagetables that could be at any level of
- * the table need to be passed an "index_size" so they know how to
- * handle allocation. For PTE pages (which are linked to a struct
- * page for now, and drawn from the main get_free_pages() pool), the
- * allocation size will be (2^index_size * sizeof(pointer)) and
- * allocations are drawn from the kmem_cache in PGT_CACHE(index_size).
- *
- * The maximum index size needs to be big enough to allow any
- * pagetable sizes we need, but small enough to fit in the low bits of
- * any page table pointer. In other words all pagetables, even tiny
- * ones, must be aligned to allow at least enough low 0 bits to
- * contain this value. This value is also used as a mask, so it must
- * be one less than a power of two.
- */
-#define MAX_PGTABLE_INDEX_SIZE 0xf
-
-extern void __bad_pte(pmd_t *pmd);
-
-extern struct kmem_cache *pgtable_cache[];
-#define PGT_CACHE(shift) ({ \
- BUG_ON(!(shift)); \
- pgtable_cache[(shift) - 1]; \
- })
-
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE),
- pgtable_gfp_flags(mm, GFP_KERNEL));
-}
-
-static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
- kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
-}
-
-/*
* We don't have any real pmd's, and this code never triggers because
* the pgd will always be present..
*/
@@ -50,96 +14,22 @@
#define __pmd_free_tlb(tlb,x,a) do { } while (0)
/* #define pgd_populate(mm, pmd, pte) BUG() */
-#ifndef CONFIG_BOOKE
-
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp,
pte_t *pte)
{
- *pmdp = __pmd(__pa(pte) | _PMD_PRESENT);
+ if (IS_ENABLED(CONFIG_BOOKE))
+ *pmdp = __pmd((unsigned long)pte | _PMD_PRESENT);
+ else
+ *pmdp = __pmd(__pa(pte) | _PMD_PRESENT);
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pte_page)
{
- *pmdp = __pmd((page_to_pfn(pte_page) << PAGE_SHIFT) | _PMD_USER |
- _PMD_PRESENT);
+ if (IS_ENABLED(CONFIG_BOOKE))
+ *pmdp = __pmd((unsigned long)pte_page | _PMD_PRESENT);
+ else
+ *pmdp = __pmd(__pa(pte_page) | _PMD_USER | _PMD_PRESENT);
}
-#define pmd_pgtable(pmd) pmd_page(pmd)
-#else
-
-static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp,
- pte_t *pte)
-{
- *pmdp = __pmd((unsigned long)pte | _PMD_PRESENT);
-}
-
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
- pgtable_t pte_page)
-{
- *pmdp = __pmd((unsigned long)lowmem_page_address(pte_page) | _PMD_PRESENT);
-}
-
-#define pmd_pgtable(pmd) pmd_page(pmd)
-#endif
-
-extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
-extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr);
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_page((unsigned long)pte);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
-{
- pgtable_page_dtor(ptepage);
- __free_page(ptepage);
-}
-
-static inline void pgtable_free(void *table, unsigned index_size)
-{
- if (!index_size) {
- pgtable_page_dtor(virt_to_page(table));
- free_page((unsigned long)table);
- } else {
- BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE);
- kmem_cache_free(PGT_CACHE(index_size), table);
- }
-}
-
-#define check_pgt_cache() do { } while (0)
-#define get_hugepd_cache_index(x) (x)
-
-#ifdef CONFIG_SMP
-static inline void pgtable_free_tlb(struct mmu_gather *tlb,
- void *table, int shift)
-{
- unsigned long pgf = (unsigned long)table;
- BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
- pgf |= shift;
- tlb_remove_table(tlb, (void *)pgf);
-}
-
-static inline void __tlb_remove_table(void *_table)
-{
- void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
- unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
-
- pgtable_free(table, shift);
-}
-#else
-static inline void pgtable_free_tlb(struct mmu_gather *tlb,
- void *table, int shift)
-{
- pgtable_free(table, shift);
-}
-#endif
-
-static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
- unsigned long address)
-{
- tlb_flush_pgtable(tlb, address);
- pgtable_free_tlb(tlb, page_address(table), 0);
-}
#endif /* _ASM_POWERPC_PGALLOC_32_H */
--
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