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ide: Implement rerror option

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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Kevin Wolf 2009-11-27 13:25:38 +01:00 committed by Anthony Liguori
parent e9b2e81889
commit ce4b6522f7
3 changed files with 39 additions and 18 deletions
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54
hw/ide/core.c
View File

@ -61,8 +61,9 @@ static inline int media_is_cd(IDEState *s)
}
static void ide_dma_start(IDEState *s, BlockDriverCompletionFunc *dma_cb);
static void ide_dma_restart(IDEState *s);
static void ide_dma_restart(IDEState *s, int is_read);
static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret);
static int ide_handle_rw_error(IDEState *s, int error, int op);
static void padstr(char *str, const char *src, int len)
{
@ -407,8 +408,11 @@ static void ide_sector_read(IDEState *s)
n = s->req_nb_sectors;
ret = bdrv_read(s->bs, sector_num, s->io_buffer, n);
if (ret != 0) {
ide_rw_error(s);
return;
if (ide_handle_rw_error(s, -ret,
BM_STATUS_PIO_RETRY | BM_STATUS_RETRY_READ))
{
return;
}
}
ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_read);
ide_set_irq(s->bus);
@ -471,9 +475,10 @@ void ide_dma_error(IDEState *s)
ide_set_irq(s->bus);
}
static int ide_handle_write_error(IDEState *s, int error, int op)
static int ide_handle_rw_error(IDEState *s, int error, int op)
{
BlockInterfaceErrorAction action = drive_get_on_error(s->bs, 0);
int is_read = (op & BM_STATUS_RETRY_READ);
BlockInterfaceErrorAction action = drive_get_on_error(s->bs, is_read);
if (action == BLOCK_ERR_IGNORE)
return 0;
@ -484,7 +489,7 @@ static int ide_handle_write_error(IDEState *s, int error, int op)
s->bus->bmdma->status |= op;
vm_stop(0);
} else {
if (op == BM_STATUS_DMA_RETRY) {
if (op & BM_STATUS_DMA_RETRY) {
dma_buf_commit(s, 0);
ide_dma_error(s);
} else {
@ -551,9 +556,11 @@ static void ide_read_dma_cb(void *opaque, int ret)
int64_t sector_num;
if (ret < 0) {
dma_buf_commit(s, 1);
ide_dma_error(s);
return;
if (ide_handle_rw_error(s, -ret,
BM_STATUS_DMA_RETRY | BM_STATUS_RETRY_READ))
{
return;
}
}
n = s->io_buffer_size >> 9;
@ -622,7 +629,7 @@ static void ide_sector_write(IDEState *s)
ret = bdrv_write(s->bs, sector_num, s->io_buffer, n);
if (ret != 0) {
if (ide_handle_write_error(s, -ret, BM_STATUS_PIO_RETRY))
if (ide_handle_rw_error(s, -ret, BM_STATUS_PIO_RETRY))
return;
}
@ -658,16 +665,23 @@ static void ide_sector_write(IDEState *s)
static void ide_dma_restart_bh(void *opaque)
{
BMDMAState *bm = opaque;
int is_read;
qemu_bh_delete(bm->bh);
bm->bh = NULL;
is_read = !!(bm->status & BM_STATUS_RETRY_READ);
if (bm->status & BM_STATUS_DMA_RETRY) {
bm->status &= ~BM_STATUS_DMA_RETRY;
ide_dma_restart(bmdma_active_if(bm));
bm->status &= ~(BM_STATUS_DMA_RETRY | BM_STATUS_RETRY_READ);
ide_dma_restart(bmdma_active_if(bm), is_read);
} else if (bm->status & BM_STATUS_PIO_RETRY) {
bm->status &= ~BM_STATUS_PIO_RETRY;
ide_sector_write(bmdma_active_if(bm));
bm->status &= ~(BM_STATUS_PIO_RETRY | BM_STATUS_RETRY_READ);
if (is_read) {
ide_sector_read(bmdma_active_if(bm));
} else {
ide_sector_write(bmdma_active_if(bm));
}
}
}
@ -692,7 +706,7 @@ static void ide_write_dma_cb(void *opaque, int ret)
int64_t sector_num;
if (ret < 0) {
if (ide_handle_write_error(s, -ret, BM_STATUS_DMA_RETRY))
if (ide_handle_rw_error(s, -ret, BM_STATUS_DMA_RETRY))
return;
}
@ -2715,7 +2729,7 @@ static void ide_dma_start(IDEState *s, BlockDriverCompletionFunc *dma_cb)
}
}
static void ide_dma_restart(IDEState *s)
static void ide_dma_restart(IDEState *s, int is_read)
{
BMDMAState *bm = s->bus->bmdma;
ide_set_sector(s, bm->sector_num);
@ -2723,7 +2737,13 @@ static void ide_dma_restart(IDEState *s)
s->io_buffer_size = 0;
s->nsector = bm->nsector;
bm->cur_addr = bm->addr;
bm->dma_cb = ide_write_dma_cb;
if (is_read) {
bm->dma_cb = ide_read_dma_cb;
} else {
bm->dma_cb = ide_write_dma_cb;
}
ide_dma_start(s, bm->dma_cb);
}

1
hw/ide/internal.h
View File

@ -464,6 +464,7 @@ struct IDEDeviceInfo {
#define BM_STATUS_INT 0x04
#define BM_STATUS_DMA_RETRY 0x08
#define BM_STATUS_PIO_RETRY 0x10
#define BM_STATUS_RETRY_READ 0x20
#define BM_CMD_START 0x01
#define BM_CMD_READ 0x08

2
vl.c
View File

@ -2198,7 +2198,7 @@ DriveInfo *drive_init(QemuOpts *opts, void *opaque,
on_read_error = BLOCK_ERR_REPORT;
if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
if (1) {
if (type != IF_IDE) {
fprintf(stderr, "rerror is no supported by this format\n");
return NULL;
}