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Some more progress on resource management and boot up.

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This commit is contained in:
Bahadir Balban
2009-07-29 13:32:38 +03:00
parent 2b0ea24e94
commit dd8f773f10
17 changed files with 950 additions and 86 deletions
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46
src/lib/memcache.c
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@@ -90,12 +90,50 @@ out:
return err;
}
struct mem_cache *mem_cache_init(void *start,
/*
* Given a buffer start address, structure size, number of
* structs and alignment requirements, determines how much
* memory is needed from that starting address
*/
int mem_cache_bufsize(void *start, int struct_size, int nstructs, int aligned)
{
unsigned long start_address = (unsigned long)start;
int total_bytes, bwords;
/* Word alignment requirement */
start_address = align_up(start_address, sizeof(int));
/* Total bytes to contain structures */
total_bytes = struct_size * nstructs;
/* Total words to contain bitmap */
bwords = nstructs >> 5;
/* An extra word if not a multiple of one word's bits */
if (nstructs & 0x1F)
bwords++;
/* Total bitmap bytes */
bitmap_size = bwords * sizeof(int);
/* Current would-be start address */
start_address += bitmap_size + total_bytes + sizeof(struct mem_cache);
/* Check alignment requirement */
if (aligned)
start_address += align_up(start_address, struct_size);
return start_address - (unsigned long)start;
}
struct mem_cache *mem_cache_init(void *bufstart,
int cache_size,
int struct_size,
unsigned int aligned)
{
struct mem_cache *cache = start;
/* Align to nearest word boundary */
void *start;
struct mem_cache *cache;
unsigned int area_start;
unsigned int *bitmap;
int bwords_in_structs;
@@ -103,6 +141,10 @@ struct mem_cache *mem_cache_init(void *start,
int total;
int bsize;
start = (void *)align_up(bufstart, sizeof(int));
cache_size -= (int)start - (int)bufstart;
mem_cache = start;
if ((struct_size < 0) || (cache_size < 0) ||
((unsigned long)start == ~(0))) {
printk("Invalid parameters.\n");