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changes to block device memory map

This commit is contained in:
Howard Mao 2017-10-24 15:24:39 -07:00
parent 2223932bd2
commit 52068497c4
1 changed files with 21 additions and 21 deletions
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42
tests/blkdev.c
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@ -5,15 +5,15 @@
#define BLKDEV_BASE 0x10015000
#define BLKDEV_ADDR BLKDEV_BASE
#define BLKDEV_OFFSET (BLKDEV_BASE + 4)
#define BLKDEV_LEN (BLKDEV_BASE + 8)
#define BLKDEV_WRITE (BLKDEV_BASE + 12)
#define BLKDEV_REQUEST (BLKDEV_BASE + 16)
#define BLKDEV_NREQUEST (BLKDEV_BASE + 20)
#define BLKDEV_COMPLETE (BLKDEV_BASE + 24)
#define BLKDEV_NCOMPLETE (BLKDEV_BASE + 28)
#define BLKDEV_NSECTORS (BLKDEV_BASE + 32)
#define BLKDEV_MAX_REQUEST_LENGTH (BLKDEV_BASE + 36)
#define BLKDEV_OFFSET (BLKDEV_BASE + 8)
#define BLKDEV_LEN (BLKDEV_BASE + 12)
#define BLKDEV_WRITE (BLKDEV_BASE + 16)
#define BLKDEV_REQUEST (BLKDEV_BASE + 17)
#define BLKDEV_NREQUEST (BLKDEV_BASE + 18)
#define BLKDEV_COMPLETE (BLKDEV_BASE + 19)
#define BLKDEV_NCOMPLETE (BLKDEV_BASE + 20)
#define BLKDEV_NSECTORS (BLKDEV_BASE + 24)
#define BLKDEV_MAX_REQUEST_LENGTH (BLKDEV_BASE + 28)
#define BLKDEV_SECTOR_SIZE 512
#define BLKDEV_SECTOR_SHIFT 9
@ -32,26 +32,26 @@ void blkdev_read(void *addr, unsigned long offset, size_t nsectors)
int req_tag, resp_tag, ntags, i;
size_t nsectors_per_tag;
ntags = reg_read32(BLKDEV_NREQUEST);
ntags = reg_read8(BLKDEV_NREQUEST);
nsectors_per_tag = nsectors / ntags;
printf("sending %d reads\n", ntags);
for (i = 0; i < ntags; i++) {
reg_write32(BLKDEV_ADDR, (unsigned long) addr);
reg_write64(BLKDEV_ADDR, (unsigned long) addr);
reg_write32(BLKDEV_OFFSET, offset);
reg_write32(BLKDEV_LEN, nsectors_per_tag);
reg_write32(BLKDEV_WRITE, 0);
reg_write8(BLKDEV_WRITE, 0);
req_tag = reg_read32(BLKDEV_REQUEST);
req_tag = reg_read8(BLKDEV_REQUEST);
addr += (nsectors_per_tag << BLKDEV_SECTOR_SHIFT);
offset += nsectors_per_tag;
}
while (reg_read32(BLKDEV_NCOMPLETE) < ntags);
while (reg_read8(BLKDEV_NCOMPLETE) < ntags);
for (i = 0; i < ntags; i++) {
resp_tag = reg_read32(BLKDEV_COMPLETE);
resp_tag = reg_read8(BLKDEV_COMPLETE);
printf("completed read %d\n", resp_tag);
}
}
@ -61,26 +61,26 @@ void blkdev_write(unsigned long offset, void *addr, size_t nsectors)
int req_tag, resp_tag, ntags, i;
size_t nsectors_per_tag;
ntags = reg_read32(BLKDEV_NREQUEST);
ntags = reg_read8(BLKDEV_NREQUEST);
nsectors_per_tag = nsectors / ntags;
printf("sending %d writes\n", ntags);
for (i = 0; i < ntags; i++) {
reg_write32(BLKDEV_ADDR, (unsigned long) addr);
reg_write64(BLKDEV_ADDR, (unsigned long) addr);
reg_write32(BLKDEV_OFFSET, offset);
reg_write32(BLKDEV_LEN, nsectors_per_tag);
reg_write32(BLKDEV_WRITE, 1);
reg_write8(BLKDEV_WRITE, 1);
req_tag = reg_read32(BLKDEV_REQUEST);
req_tag = reg_read8(BLKDEV_REQUEST);
addr += (nsectors_per_tag << BLKDEV_SECTOR_SHIFT);
offset += nsectors_per_tag;
}
while (reg_read32(BLKDEV_NCOMPLETE) < ntags);
while (reg_read8(BLKDEV_NCOMPLETE) < ntags);
for (i = 0; i < ntags; i++) {
resp_tag = reg_read32(BLKDEV_COMPLETE);
resp_tag = reg_read8(BLKDEV_COMPLETE);
printf("completed write %d\n", resp_tag);
}
}