summaryrefslogtreecommitdiffstats
path: root/arch/arm/mm/cache-v4.S
diff options
context:
space:
mode:
authorSang-Heon Jeon <ekffu200098@gmail.com>2026-08-24 01:18:14 +0900
committerJulia Lawall <Julia.Lawall@inria.fr>2026-08-23 22:12:11 +0200
commit2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c (patch)
treedcc4da1d99f17541c5590ac63c77da4bf372a4ab /arch/arm/mm/cache-v4.S
downloadlinux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.tar.gz
linux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.zip
coccinelle: alloc_cast: drop removed allocatorsgrafted
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Diffstat (limited to 'arch/arm/mm/cache-v4.S')
-rw-r--r--arch/arm/mm/cache-v4.S148
1 files changed, 148 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-v4.S b/arch/arm/mm/cache-v4.S
new file mode 100644
index 000000000..001d7042b
--- /dev/null
+++ b/arch/arm/mm/cache-v4.S
@@ -0,0 +1,148 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/arch/arm/mm/cache-v4.S
+ *
+ * Copyright (C) 1997-2002 Russell king
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/cfi_types.h>
+#include <asm/assembler.h>
+#include <asm/page.h>
+#include "proc-macros.S"
+
+/*
+ * flush_icache_all()
+ *
+ * Unconditionally clean and invalidate the entire icache.
+ */
+SYM_TYPED_FUNC_START(v4_flush_icache_all)
+ ret lr
+SYM_FUNC_END(v4_flush_icache_all)
+
+/*
+ * flush_user_cache_all()
+ *
+ * Invalidate all cache entries in a particular address
+ * space.
+ *
+ * - mm - mm_struct describing address space
+ */
+SYM_FUNC_ALIAS(v4_flush_user_cache_all, v4_flush_kern_cache_all)
+
+/*
+ * flush_kern_cache_all()
+ *
+ * Clean and invalidate the entire cache.
+ */
+SYM_TYPED_FUNC_START(v4_flush_kern_cache_all)
+#ifdef CONFIG_CPU_CP15
+ mov r0, #0
+ mcr p15, 0, r0, c7, c7, 0 @ flush ID cache
+ ret lr
+#else
+ ret lr
+#endif
+SYM_FUNC_END(v4_flush_kern_cache_all)
+
+/*
+ * flush_user_cache_range(start, end, flags)
+ *
+ * Invalidate a range of cache entries in the specified
+ * address space.
+ *
+ * - start - start address (may not be aligned)
+ * - end - end address (exclusive, may not be aligned)
+ * - flags - vma_area_struct flags describing address space
+ */
+SYM_TYPED_FUNC_START(v4_flush_user_cache_range)
+#ifdef CONFIG_CPU_CP15
+ mov ip, #0
+ mcr p15, 0, ip, c7, c7, 0 @ flush ID cache
+ ret lr
+#else
+ ret lr
+#endif
+SYM_FUNC_END(v4_flush_user_cache_range)
+
+/*
+ * coherent_kern_range(start, end)
+ *
+ * Ensure coherency between the Icache and the Dcache in the
+ * region described by start. If you have non-snooping
+ * Harvard caches, you need to implement this function.
+ *
+ * - start - virtual start address
+ * - end - virtual end address
+ */
+SYM_TYPED_FUNC_START(v4_coherent_kern_range)
+ ret lr
+SYM_FUNC_END(v4_coherent_kern_range)
+
+/*
+ * coherent_user_range(start, end)
+ *
+ * Ensure coherency between the Icache and the Dcache in the
+ * region described by start. If you have non-snooping
+ * Harvard caches, you need to implement this function.
+ *
+ * - start - virtual start address
+ * - end - virtual end address
+ */
+SYM_TYPED_FUNC_START(v4_coherent_user_range)
+ mov r0, #0
+ ret lr
+SYM_FUNC_END(v4_coherent_user_range)
+
+/*
+ * flush_kern_dcache_area(void *addr, size_t size)
+ *
+ * Ensure no D cache aliasing occurs, either with itself or
+ * the I cache
+ *
+ * - addr - kernel address
+ * - size - region size
+ */
+SYM_TYPED_FUNC_START(v4_flush_kern_dcache_area)
+#ifdef CONFIG_CFI /* Fallthrough if !CFI */
+ b v4_dma_flush_range
+#endif
+SYM_FUNC_END(v4_flush_kern_dcache_area)
+
+/*
+ * dma_flush_range(start, end)
+ *
+ * Clean and invalidate the specified virtual address range.
+ *
+ * - start - virtual start address
+ * - end - virtual end address
+ */
+SYM_TYPED_FUNC_START(v4_dma_flush_range)
+#ifdef CONFIG_CPU_CP15
+ mov r0, #0
+ mcr p15, 0, r0, c7, c7, 0 @ flush ID cache
+#endif
+ ret lr
+SYM_FUNC_END(v4_dma_flush_range)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+SYM_TYPED_FUNC_START(v4_dma_unmap_area)
+ teq r2, #DMA_TO_DEVICE
+ bne v4_dma_flush_range
+ ret lr
+SYM_FUNC_END(v4_dma_unmap_area)
+
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+SYM_TYPED_FUNC_START(v4_dma_map_area)
+ ret lr
+SYM_FUNC_END(v4_dma_map_area)