diff options
Diffstat (limited to 'meta-agl-bsp/meta-renesas/recipes-bsp/u-boot/u-boot/hibernation/0002-Enable-swsusp-DMA-support.patch')
| -rw-r--r-- | meta-agl-bsp/meta-renesas/recipes-bsp/u-boot/u-boot/hibernation/0002-Enable-swsusp-DMA-support.patch | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/meta-agl-bsp/meta-renesas/recipes-bsp/u-boot/u-boot/hibernation/0002-Enable-swsusp-DMA-support.patch b/meta-agl-bsp/meta-renesas/recipes-bsp/u-boot/u-boot/hibernation/0002-Enable-swsusp-DMA-support.patch new file mode 100644 index 000000000..2a525d39a --- /dev/null +++ b/meta-agl-bsp/meta-renesas/recipes-bsp/u-boot/u-boot/hibernation/0002-Enable-swsusp-DMA-support.patch @@ -0,0 +1,95 @@ +From 33dfe19185b35fc61613070032836beee0f48c45 Mon Sep 17 00:00:00 2001 +From: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com> +Date: Fri, 9 Jun 2017 20:45:39 +0900 +Subject: [PATCH 2/3] Enable swsusp DMA support + +Signed-off-by: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com> +--- + common/cmd_swsusp.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++ + 1 file changed, 58 insertions(+) + +diff --git a/common/cmd_swsusp.c b/common/cmd_swsusp.c +index ba05aa4..b1d6c22 100644 +--- a/common/cmd_swsusp.c ++++ b/common/cmd_swsusp.c +@@ -226,6 +226,53 @@ static inline void *malloc_aligned(u32 size, u32 align) + return (void *)(((u32)malloc(size + align) + align - 1) & ~(align - 1)); + } + ++static int block_read(u32 page, void *addr, u32 count) ++{ ++ __u32 cnt; ++ int blk_per_page; ++ ++ blk_per_page = PAGE_SIZE / swap_dev->blksz; ++ cnt = swap_dev->block_read(swap_dev->dev, ++ swap_info.start + (page * blk_per_page), ++ count * blk_per_page, addr); ++ ++ return cnt != count * blk_per_page; ++} ++ ++static int get_block(unsigned char *buffer, u32 size) ++{ ++ int need_num_pages = size / PAGE_SIZE; ++ int read_pages = 0; ++ int count; ++ u64 start; ++ ++ do { ++ u64 prev; ++ count = 0; ++ ++ if (!get_meta()) ++ goto exit; ++ ++ prev = start = meta_map->entries[meta_idx]; ++ do { ++ count++; ++ meta_idx++; ++ if (meta_map->entries[meta_idx] - prev > 1) ++ break; ++ prev = meta_map->entries[meta_idx]; ++ } while (read_pages + count < need_num_pages && ++ meta_idx < ARRAY_SIZE(meta_map->entries)); ++ ++ if (block_read(start, buffer, count)) ++ return -1; ++ read_pages += count; ++ buffer += count * PAGE_SIZE; ++ } while (read_pages < need_num_pages); ++ ++exit: ++ return read_pages * PAGE_SIZE; ++} ++ + #endif + + static int page_read(u32 page, void *addr) +@@ -465,12 +512,23 @@ static int image_page_get_next(void *buffer) + cmp_len = *(size_t *) cmp_buf; + cmp_avail = PAGE_SIZE; + ++#ifdef CONFIG_SH_DMA ++ while (cmp_avail < cmp_len + LZO_HEADER) { ++ /* try to DMA-read whole block */ ++ ret = get_block(cmp_buf + cmp_avail, ++ cmp_len + LZO_HEADER); ++ if (unlikely(ret <= 0)) ++ return ret; ++ cmp_avail += ret; ++ } ++#else + while (cmp_avail < cmp_len + LZO_HEADER) { + ret = raw_page_get_next(cmp_buf + cmp_avail); + if (unlikely(ret <= 0)) + return ret; + cmp_avail += PAGE_SIZE; + } ++#endif + unc_len = LZO_UNC_SIZE; + ret = lzo1x_decompress_safe(cmp_buf + LZO_HEADER, + cmp_len, unc_buf, &unc_len); +-- +1.8.3.1 + |