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ide: replace set_unit callback with more IDEBus state 

Start moving the initial state of the current request to IDEBus, so that
AHCI can use it.  The set_unit callback is not used anymore once this is
done.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1424708286-16483-9-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-02-23 11:17:57 -05:00 committed by Kevin Wolf
parent fe09c7c9f0
commit a96cb23629
6 changed files with 15 additions and 26 deletions
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7
hw/ide/ahci.c
View File

@ -1226,12 +1226,6 @@ static int ahci_dma_rw_buf(IDEDMA *dma, int is_write)
return 1;
}
static int ahci_dma_set_unit(IDEDMA *dma, int unit)
{
/* only a single unit per link */
return 0;
}
static void ahci_cmd_done(IDEDMA *dma)
{
AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
@ -1258,7 +1252,6 @@ static const IDEDMAOps ahci_dma_ops = {
.prepare_buf = ahci_dma_prepare_buf,
.commit_buf = ahci_commit_buf,
.rw_buf = ahci_dma_rw_buf,
.set_unit = ahci_dma_set_unit,
.cmd_done = ahci_cmd_done,
};

6
hw/ide/core.c
View File

@ -646,6 +646,7 @@ static void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
void ide_set_inactive(IDEState *s, bool more)
{
s->bus->dma->aiocb = NULL;
s->bus->retry_unit = -1;
if (s->bus->dma->ops->set_inactive) {
s->bus->dma->ops->set_inactive(s->bus->dma, more);
}
@ -666,7 +667,7 @@ static int ide_handle_rw_error(IDEState *s, int error, int op)
BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
if (action == BLOCK_ERROR_ACTION_STOP) {
s->bus->dma->ops->set_unit(s->bus->dma, s->unit);
assert(s->bus->retry_unit == s->unit);
s->bus->error_status = op;
} else if (action == BLOCK_ERROR_ACTION_REPORT) {
if (op & IDE_RETRY_DMA) {
@ -799,6 +800,7 @@ static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
{
s->bus->retry_unit = s->unit;
if (s->bus->dma->ops->start_dma) {
s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
}
@ -2327,11 +2329,11 @@ static const IDEDMAOps ide_dma_nop_ops = {
.prepare_buf = ide_nop_int32,
.restart_dma = ide_nop,
.rw_buf = ide_nop_int,
.set_unit = ide_nop_int,
};
static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
{
s->unit = s->bus->retry_unit;
s->bus->dma->ops->restart_dma(s->bus->dma);
s->io_buffer_index = 0;
s->io_buffer_size = 0;

2
hw/ide/internal.h
View File

@ -436,7 +436,6 @@ struct IDEDMAOps {
DMAInt32Func *prepare_buf;
DMAu32Func *commit_buf;
DMAIntFunc *rw_buf;
DMAIntFunc *set_unit;
DMAVoidFunc *restart_dma;
DMAStopFunc *set_inactive;
DMAVoidFunc *cmd_done;
@ -465,6 +464,7 @@ struct IDEBus {
qemu_irq irq;
int error_status;
uint8_t retry_unit;
};
#define TYPE_IDE_DEVICE "ide-device"

1
hw/ide/macio.c
View File

@ -572,7 +572,6 @@ static const IDEDMAOps dbdma_ops = {
.start_dma = ide_dbdma_start,
.prepare_buf = ide_nop_int32,
.rw_buf = ide_nop_int,
.set_unit = ide_nop_int,
};
static void macio_ide_realizefn(DeviceState *dev, Error **errp)

19
hw/ide/pci.c
View File

@ -42,7 +42,6 @@ static void bmdma_start_dma(IDEDMA *dma, IDEState *s,
{
BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);
bm->unit = s->unit;
bm->dma_cb = dma_cb;
bm->cur_prd_last = 0;
bm->cur_prd_addr = 0;
@ -163,20 +162,11 @@ static int bmdma_rw_buf(IDEDMA *dma, int is_write)
return 1;
}
static int bmdma_set_unit(IDEDMA *dma, int unit)
{
BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);
bm->unit = unit;
return 0;
}
static void bmdma_set_inactive(IDEDMA *dma, bool more)
{
BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);
bm->dma_cb = NULL;
bm->unit = -1;
if (more) {
bm->status |= BM_STATUS_DMAING;
} else {
@ -335,6 +325,7 @@ static void ide_bmdma_pre_save(void *opaque)
BMDMAState *bm = opaque;
uint8_t abused_bits = BM_MIGRATION_COMPAT_STATUS_BITS;
bm->migration_retry_unit = bm->bus->retry_unit;
bm->migration_compat_status =
(bm->status & ~abused_bits) | (bm->bus->error_status & abused_bits);
}
@ -351,6 +342,9 @@ static int ide_bmdma_post_load(void *opaque, int version_id)
bm->status = bm->migration_compat_status & ~abused_bits;
bm->bus->error_status |= bm->migration_compat_status & abused_bits;
}
if (bm->bus->error_status) {
bm->bus->retry_unit = bm->migration_retry_unit;
}
return 0;
}
@ -389,7 +383,7 @@ static const VMStateDescription vmstate_bmdma = {
VMSTATE_UINT32(addr, BMDMAState),
VMSTATE_INT64(sector_num, BMDMAState),
VMSTATE_UINT32(nsector, BMDMAState),
VMSTATE_UINT8(unit, BMDMAState),
VMSTATE_UINT8(migration_retry_unit, BMDMAState),
VMSTATE_END_OF_LIST()
},
.subsections = (VMStateSubsection []) {
@ -413,7 +407,7 @@ static int ide_pci_post_load(void *opaque, int version_id)
for(i = 0; i < 2; i++) {
/* current versions always store 0/1, but older version
stored bigger values. We only need last bit */
d->bmdma[i].unit &= 1;
d->bmdma[i].migration_retry_unit &= 1;
ide_bmdma_post_load(&d->bmdma[i], -1);
}
@ -454,7 +448,6 @@ static const struct IDEDMAOps bmdma_ops = {
.start_dma = bmdma_start_dma,
.prepare_buf = bmdma_prepare_buf,
.rw_buf = bmdma_rw_buf,
.set_unit = bmdma_set_unit,
.restart_dma = bmdma_restart_dma,
.set_inactive = bmdma_set_inactive,
.reset = bmdma_reset,

6
hw/ide/pci.h
View File

@ -33,6 +33,8 @@ typedef struct BMDMAState {
/* Bit 0-2 and 7: BM status register
* Bit 3-6: bus->error_status */
uint8_t migration_compat_status;
uint8_t migration_retry_unit;
struct PCIIDEState *pci_dev;
} BMDMAState;
@ -61,8 +63,8 @@ typedef struct PCIIDEState {
static inline IDEState *bmdma_active_if(BMDMAState *bmdma)
{
assert(bmdma->unit != (uint8_t)-1);
return bmdma->bus->ifs + bmdma->unit;
assert(bmdma->bus->retry_unit != (uint8_t)-1);
return bmdma->bus->ifs + bmdma->bus->retry_unit;
}