diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-uniphier/arm32/cache-uniphier.c | 50 | ||||
| -rw-r--r-- | arch/arm/mach-uniphier/arm32/cache-uniphier.h | 17 |
2 files changed, 57 insertions, 10 deletions
diff --git a/arch/arm/mach-uniphier/arm32/cache-uniphier.c b/arch/arm/mach-uniphier/arm32/cache-uniphier.c index 7b126bb781..a210835ea9 100644 --- a/arch/arm/mach-uniphier/arm32/cache-uniphier.c +++ b/arch/arm/mach-uniphier/arm32/cache-uniphier.c @@ -12,12 +12,13 @@ #include <asm/armv7.h> #include <asm/processor.h> +#include "cache-uniphier.h" #include "ssc-regs.h" #define UNIPHIER_SSCOQAD_IS_NEEDED(op) \ ((op & UNIPHIER_SSCOQM_S_MASK) == UNIPHIER_SSCOQM_S_RANGE) - -#ifdef CONFIG_UNIPHIER_L2CACHE_ON +#define UNIPHIER_SSCOQWM_IS_NEEDED(op) \ + ((op & UNIPHIER_SSCOQM_TID_MASK) == UNIPHIER_SSCOQM_TID_WAY) /* uniphier_cache_sync - perform a sync point for a particular cache level */ static void uniphier_cache_sync(void) @@ -33,9 +34,11 @@ static void uniphier_cache_sync(void) * * @start: start address of range operation (don't care for "all" operation) * @size: data size of range operation (don't care for "all" operation) + * @ways: target ways (don't care for operations other than pre-fetch, touch * @operation: flags to specify the desired cache operation */ -static void uniphier_cache_maint_common(u32 start, u32 size, u32 operation) +static void uniphier_cache_maint_common(u32 start, u32 size, u32 ways, + u32 operation) { /* clear the complete notification flag */ writel(UNIPHIER_SSCOLPQS_EF, UNIPHIER_SSCOLPQS); @@ -49,6 +52,10 @@ static void uniphier_cache_maint_common(u32 start, u32 size, u32 operation) writel(start, UNIPHIER_SSCOQAD); writel(size, UNIPHIER_SSCOQSZ); } + + /* set target ways if needed */ + if (unlikely(UNIPHIER_SSCOQWM_IS_NEEDED(operation))) + writel(ways, UNIPHIER_SSCOQWN); } while (unlikely(readl(UNIPHIER_SSCOPPQSEF) & (UNIPHIER_SSCOPPQSEF_FE | UNIPHIER_SSCOPPQSEF_OE))); @@ -59,12 +66,13 @@ static void uniphier_cache_maint_common(u32 start, u32 size, u32 operation) static void uniphier_cache_maint_all(u32 operation) { - uniphier_cache_maint_common(0, 0, UNIPHIER_SSCOQM_S_ALL | operation); + uniphier_cache_maint_common(0, 0, 0, UNIPHIER_SSCOQM_S_ALL | operation); uniphier_cache_sync(); } -static void uniphier_cache_maint_range(u32 start, u32 end, u32 operation) +static void uniphier_cache_maint_range(u32 start, u32 end, u32 ways, + u32 operation) { u32 size; @@ -91,7 +99,7 @@ static void uniphier_cache_maint_range(u32 start, u32 end, u32 operation) while (size) { u32 chunk_size = min_t(u32, size, UNIPHIER_SSC_RANGE_OP_MAX_SIZE); - uniphier_cache_maint_common(start, chunk_size, + uniphier_cache_maint_common(start, chunk_size, ways, UNIPHIER_SSCOQM_S_RANGE | operation); start += chunk_size; @@ -101,6 +109,28 @@ static void uniphier_cache_maint_range(u32 start, u32 end, u32 operation) uniphier_cache_sync(); } +void uniphier_cache_prefetch_range(u32 start, u32 end, u32 ways) +{ + uniphier_cache_maint_range(start, end, ways, + UNIPHIER_SSCOQM_TID_WAY | + UNIPHIER_SSCOQM_CM_PREFETCH); +} + +void uniphier_cache_touch_range(u32 start, u32 end, u32 ways) +{ + uniphier_cache_maint_range(start, end, ways, + UNIPHIER_SSCOQM_TID_WAY | + UNIPHIER_SSCOQM_CM_TOUCH); +} + +void uniphier_cache_touch_zero_range(u32 start, u32 end, u32 ways) +{ + uniphier_cache_maint_range(start, end, ways, + UNIPHIER_SSCOQM_TID_WAY | + UNIPHIER_SSCOQM_CM_TOUCH_ZERO); +} + +#ifdef CONFIG_UNIPHIER_L2CACHE_ON void v7_outer_cache_flush_all(void) { uniphier_cache_maint_all(UNIPHIER_SSCOQM_CM_FLUSH); @@ -113,14 +143,14 @@ void v7_outer_cache_inval_all(void) void v7_outer_cache_flush_range(u32 start, u32 end) { - uniphier_cache_maint_range(start, end, UNIPHIER_SSCOQM_CM_FLUSH); + uniphier_cache_maint_range(start, end, 0, UNIPHIER_SSCOQM_CM_FLUSH); } void v7_outer_cache_inval_range(u32 start, u32 end) { if (start & (UNIPHIER_SSC_LINE_SIZE - 1)) { start &= ~(UNIPHIER_SSC_LINE_SIZE - 1); - uniphier_cache_maint_range(start, UNIPHIER_SSC_LINE_SIZE, + uniphier_cache_maint_range(start, UNIPHIER_SSC_LINE_SIZE, 0, UNIPHIER_SSCOQM_CM_FLUSH); start += UNIPHIER_SSC_LINE_SIZE; } @@ -132,7 +162,7 @@ void v7_outer_cache_inval_range(u32 start, u32 end) if (end & (UNIPHIER_SSC_LINE_SIZE - 1)) { end &= ~(UNIPHIER_SSC_LINE_SIZE - 1); - uniphier_cache_maint_range(end, UNIPHIER_SSC_LINE_SIZE, + uniphier_cache_maint_range(end, UNIPHIER_SSC_LINE_SIZE, 0, UNIPHIER_SSCOQM_CM_FLUSH); } @@ -141,7 +171,7 @@ void v7_outer_cache_inval_range(u32 start, u32 end) return; } - uniphier_cache_maint_range(start, end, UNIPHIER_SSCOQM_CM_INV); + uniphier_cache_maint_range(start, end, 0, UNIPHIER_SSCOQM_CM_INV); } void v7_outer_cache_enable(void) diff --git a/arch/arm/mach-uniphier/arm32/cache-uniphier.h b/arch/arm/mach-uniphier/arm32/cache-uniphier.h new file mode 100644 index 0000000000..f67f6ae7eb --- /dev/null +++ b/arch/arm/mach-uniphier/arm32/cache-uniphier.h @@ -0,0 +1,17 @@ +/* + * Copyright (C) 2016 Socionext Inc. + * Author: Masahiro Yamada <yamada.masahiro@socionext.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __CACHE_UNIPHIER_H +#define __CACHE_UNIPHIER_H + +#include <linux/types.h> + +void uniphier_cache_prefetch_range(u32 start, u32 end, u32 ways); +void uniphier_cache_touch_range(u32 start, u32 end, u32 ways); +void uniphier_cache_touch_zero_range(u32 start, u32 end, u32 ways); + +#endif /* __CACHE_UNIPHIER_H */ |