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common: add blkcache init

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On m68k, block_cache list is relocated, but next and prev list
pointers are not adjusted to the relocated struct list_head address,
so the first iteration over the block_cache list hangs.

This patch initializes the block_cache list after relocation.

Signed-off-by: Angelo Durgehello <angelo.dureghello@timesys.com>
Reviewed-by: Eric Nelson <eric@nelint.com>
This commit is contained in:
Angelo Durgehello 2020-01-21 10:37:27 +01:00 • committed by Tom Rini
parent 5cde44e12a
commit 1526bcce0f
3 changed files with 17 additions and 1 deletions
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3
common/board_r.c
View file

@ -864,6 +864,9 @@ static init_fnc_t init_sequence_r[] = {
#endif #endif
#if defined(CONFIG_PRAM) #if defined(CONFIG_PRAM)
initr_mem, initr_mem,
#endif
#ifdef CONFIG_BLOCK_CACHE
blkcache_init,
#endif #endif
run_main_loop, run_main_loop,
}; };

9
drivers/block/blkcache.c
View file

@ -21,13 +21,20 @@ struct block_cache_node {
char *cache; char *cache;
}; };
static LIST_HEAD(block_cache); static struct list_head block_cache;
static struct block_cache_stats _stats = { static struct block_cache_stats _stats = {
.max_blocks_per_entry = 8, .max_blocks_per_entry = 8,
.max_entries = 32 .max_entries = 32
}; };
int blkcache_init(void)
{
INIT_LIST_HEAD(&block_cache);
return 0;
}
static struct block_cache_node *cache_find(int iftype, int devnum, static struct block_cache_node *cache_find(int iftype, int devnum,
lbaint_t start, lbaint_t blkcnt, lbaint_t start, lbaint_t blkcnt,
unsigned long blksz) unsigned long blksz)

6
include/blk.h
View file

@ -113,6 +113,12 @@ struct blk_desc {
(PAD_SIZE(size, blk_desc->blksz)) (PAD_SIZE(size, blk_desc->blksz))
#if CONFIG_IS_ENABLED(BLOCK_CACHE) #if CONFIG_IS_ENABLED(BLOCK_CACHE)
/**
* blkcache_init() - initialize the block cache list pointers
*/
int blkcache_init(void);
/** /**
* blkcache_read() - attempt to read a set of blocks from cache * blkcache_read() - attempt to read a set of blocks from cache
* *