mirror of
https://git.openwrt.org/openwrt/openwrt.git
synced 2024-11-22 04:56:15 +00:00
8c405cdccc
The patches were generated from the RPi repo with the following command: git format-patch v6.6.34..rpi-6.1.y Some patches needed rebasing and, as usual, the applied and reverted, wireless drivers, Github workflows, READMEs and defconfigs patches were removed. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
100 lines
3.4 KiB
Diff
100 lines
3.4 KiB
Diff
From bd7e4336b9f12cf217deeb5778bcd4cf75a5e75e Mon Sep 17 00:00:00 2001
|
|
From: Dan Pasanen <dan.pasanen@gmail.com>
|
|
Date: Thu, 21 Sep 2017 09:55:42 -0500
|
|
Subject: [PATCH 0055/1085] arm: partially revert
|
|
702b94bff3c50542a6e4ab9a4f4cef093262fe65
|
|
|
|
* Re-expose some dmi APIs for use in VCSM
|
|
---
|
|
arch/arm/include/asm/cacheflush.h | 21 +++++++++++++++++++++
|
|
arch/arm/include/asm/glue-cache.h | 2 ++
|
|
arch/arm/mm/proc-macros.S | 2 ++
|
|
arch/arm/mm/proc-syms.c | 3 +++
|
|
4 files changed, 28 insertions(+)
|
|
|
|
--- a/arch/arm/include/asm/cacheflush.h
|
|
+++ b/arch/arm/include/asm/cacheflush.h
|
|
@@ -91,6 +91,21 @@
|
|
* DMA Cache Coherency
|
|
* ===================
|
|
*
|
|
+ * dma_inv_range(start, end)
|
|
+ *
|
|
+ * Invalidate (discard) the specified virtual address range.
|
|
+ * May not write back any entries. If 'start' or 'end'
|
|
+ * are not cache line aligned, those lines must be written
|
|
+ * back.
|
|
+ * - start - virtual start address
|
|
+ * - end - virtual end address
|
|
+ *
|
|
+ * dma_clean_range(start, end)
|
|
+ *
|
|
+ * Clean (write back) the specified virtual address range.
|
|
+ * - start - virtual start address
|
|
+ * - end - virtual end address
|
|
+ *
|
|
* dma_flush_range(start, end)
|
|
*
|
|
* Clean and invalidate the specified virtual address range.
|
|
@@ -112,6 +127,8 @@ struct cpu_cache_fns {
|
|
void (*dma_map_area)(const void *, size_t, int);
|
|
void (*dma_unmap_area)(const void *, size_t, int);
|
|
|
|
+ void (*dma_inv_range)(const void *, const void *);
|
|
+ void (*dma_clean_range)(const void *, const void *);
|
|
void (*dma_flush_range)(const void *, const void *);
|
|
} __no_randomize_layout;
|
|
|
|
@@ -137,6 +154,8 @@ extern struct cpu_cache_fns cpu_cache;
|
|
* is visible to DMA, or data written by DMA to system memory is
|
|
* visible to the CPU.
|
|
*/
|
|
+#define dmac_inv_range cpu_cache.dma_inv_range
|
|
+#define dmac_clean_range cpu_cache.dma_clean_range
|
|
#define dmac_flush_range cpu_cache.dma_flush_range
|
|
|
|
#else
|
|
@@ -156,6 +175,8 @@ extern void __cpuc_flush_dcache_area(voi
|
|
* is visible to DMA, or data written by DMA to system memory is
|
|
* visible to the CPU.
|
|
*/
|
|
+extern void dmac_inv_range(const void *, const void *);
|
|
+extern void dmac_clean_range(const void *, const void *);
|
|
extern void dmac_flush_range(const void *, const void *);
|
|
|
|
#endif
|
|
--- a/arch/arm/include/asm/glue-cache.h
|
|
+++ b/arch/arm/include/asm/glue-cache.h
|
|
@@ -155,6 +155,8 @@ static inline void nop_dma_unmap_area(co
|
|
#define __cpuc_coherent_user_range __glue(_CACHE,_coherent_user_range)
|
|
#define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
|
|
|
|
+#define dmac_inv_range __glue(_CACHE,_dma_inv_range)
|
|
+#define dmac_clean_range __glue(_CACHE,_dma_clean_range)
|
|
#define dmac_flush_range __glue(_CACHE,_dma_flush_range)
|
|
#endif
|
|
|
|
--- a/arch/arm/mm/proc-macros.S
|
|
+++ b/arch/arm/mm/proc-macros.S
|
|
@@ -334,6 +334,8 @@ ENTRY(\name\()_cache_fns)
|
|
.long \name\()_flush_kern_dcache_area
|
|
.long \name\()_dma_map_area
|
|
.long \name\()_dma_unmap_area
|
|
+ .long \name\()_dma_inv_range
|
|
+ .long \name\()_dma_clean_range
|
|
.long \name\()_dma_flush_range
|
|
.size \name\()_cache_fns, . - \name\()_cache_fns
|
|
.endm
|
|
--- a/arch/arm/mm/proc-syms.c
|
|
+++ b/arch/arm/mm/proc-syms.c
|
|
@@ -27,6 +27,9 @@ EXPORT_SYMBOL(__cpuc_flush_user_all);
|
|
EXPORT_SYMBOL(__cpuc_flush_user_range);
|
|
EXPORT_SYMBOL(__cpuc_coherent_kern_range);
|
|
EXPORT_SYMBOL(__cpuc_flush_dcache_area);
|
|
+EXPORT_SYMBOL(dmac_inv_range);
|
|
+EXPORT_SYMBOL(dmac_clean_range);
|
|
+EXPORT_SYMBOL(dmac_flush_range);
|
|
#else
|
|
EXPORT_SYMBOL(cpu_cache);
|
|
#endif
|