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dma-helpers: change interface to byte-based

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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-05-23 14:54:05 +02:00 committed by Kevin Wolf
parent 20018e12cf
commit cbe0ed6247
7 changed files with 27 additions and 21 deletions
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14
dma-helpers.c
View File

@ -192,18 +192,18 @@ static const AIOCBInfo dma_aiocb_info = {
};
BlockAIOCB *dma_blk_io(
BlockBackend *blk, QEMUSGList *sg, uint64_t sector_num,
BlockBackend *blk, QEMUSGList *sg, uint64_t offset,
DMAIOFunc *io_func, BlockCompletionFunc *cb,
void *opaque, DMADirection dir)
{
DMAAIOCB *dbs = blk_aio_get(&dma_aiocb_info, blk, cb, opaque);
trace_dma_blk_io(dbs, blk, sector_num, (dir == DMA_DIRECTION_TO_DEVICE));
trace_dma_blk_io(dbs, blk, offset, (dir == DMA_DIRECTION_TO_DEVICE));
dbs->acb = NULL;
dbs->blk = blk;
dbs->sg = sg;
dbs->offset = sector_num << BDRV_SECTOR_BITS;
dbs->offset = offset;
dbs->sg_cur_index = 0;
dbs->sg_cur_byte = 0;
dbs->dir = dir;
@ -216,18 +216,18 @@ BlockAIOCB *dma_blk_io(
BlockAIOCB *dma_blk_read(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector,
QEMUSGList *sg, uint64_t offset,
void (*cb)(void *opaque, int ret), void *opaque)
{
return dma_blk_io(blk, sg, sector, blk_aio_preadv, cb, opaque,
return dma_blk_io(blk, sg, offset, blk_aio_preadv, cb, opaque,
DMA_DIRECTION_FROM_DEVICE);
}
BlockAIOCB *dma_blk_write(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector,
QEMUSGList *sg, uint64_t offset,
void (*cb)(void *opaque, int ret), void *opaque)
{
return dma_blk_io(blk, sg, sector, blk_aio_pwritev, cb, opaque,
return dma_blk_io(blk, sg, offset, blk_aio_pwritev, cb, opaque,
DMA_DIRECTION_TO_DEVICE);
}

6
hw/block/nvme.c
View File

@ -239,7 +239,7 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, NvmeCmd *cmd,
uint8_t lba_index = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas);
uint8_t data_shift = ns->id_ns.lbaf[lba_index].ds;
uint64_t data_size = (uint64_t)nlb << data_shift;
uint64_t aio_slba = slba << (data_shift - BDRV_SECTOR_BITS);
uint64_t data_offset = slba << data_shift;
int is_write = rw->opcode == NVME_CMD_WRITE ? 1 : 0;
enum BlockAcctType acct = is_write ? BLOCK_ACCT_WRITE : BLOCK_ACCT_READ;
@ -258,8 +258,8 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, NvmeCmd *cmd,
req->has_sg = true;
dma_acct_start(n->conf.blk, &req->acct, &req->qsg, acct);
req->aiocb = is_write ?
dma_blk_write(n->conf.blk, &req->qsg, aio_slba, nvme_rw_cb, req) :
dma_blk_read(n->conf.blk, &req->qsg, aio_slba, nvme_rw_cb, req);
dma_blk_write(n->conf.blk, &req->qsg, data_offset, nvme_rw_cb, req) :
dma_blk_read(n->conf.blk, &req->qsg, data_offset, nvme_rw_cb, req);
return NVME_NO_COMPLETE;
}

6
hw/ide/ahci.c
View File

@ -1006,7 +1006,8 @@ static void execute_ncq_command(NCQTransferState *ncq_tfs)
dma_acct_start(ide_state->blk, &ncq_tfs->acct,
&ncq_tfs->sglist, BLOCK_ACCT_READ);
ncq_tfs->aiocb = dma_blk_read(ide_state->blk, &ncq_tfs->sglist,
ncq_tfs->lba, ncq_cb, ncq_tfs);
ncq_tfs->lba << BDRV_SECTOR_BITS,
ncq_cb, ncq_tfs);
break;
case WRITE_FPDMA_QUEUED:
DPRINTF(port, "NCQ writing %d sectors to LBA %"PRId64", tag %d\n",
@ -1018,7 +1019,8 @@ static void execute_ncq_command(NCQTransferState *ncq_tfs)
dma_acct_start(ide_state->blk, &ncq_tfs->acct,
&ncq_tfs->sglist, BLOCK_ACCT_WRITE);
ncq_tfs->aiocb = dma_blk_write(ide_state->blk, &ncq_tfs->sglist,
ncq_tfs->lba, ncq_cb, ncq_tfs);
ncq_tfs->lba << BDRV_SECTOR_BITS,
ncq_cb, ncq_tfs);
break;
default:
DPRINTF(port, "error: unsupported NCQ command (0x%02x) received\n",

8
hw/ide/core.c
View File

@ -799,6 +799,7 @@ static void ide_dma_cb(void *opaque, int ret)
IDEState *s = opaque;
int n;
int64_t sector_num;
uint64_t offset;
bool stay_active = false;
if (ret == -ECANCELED) {
@ -859,17 +860,18 @@ static void ide_dma_cb(void *opaque, int ret)
return;
}
offset = sector_num << BDRV_SECTOR_BITS;
switch (s->dma_cmd) {
case IDE_DMA_READ:
s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, sector_num,
s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset,
ide_dma_cb, s);
break;
case IDE_DMA_WRITE:
s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, sector_num,
s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset,
ide_dma_cb, s);
break;
case IDE_DMA_TRIM:
s->bus->dma->aiocb = dma_blk_io(s->blk, &s->sg, sector_num,
s->bus->dma->aiocb = dma_blk_io(s->blk, &s->sg, offset,
ide_issue_trim, ide_dma_cb, s,
DMA_DIRECTION_TO_DEVICE);
break;

6
hw/scsi/scsi-disk.c
View File

@ -335,7 +335,8 @@ static void scsi_do_read(SCSIDiskReq *r, int ret)
if (r->req.sg) {
dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_READ);
r->req.resid -= r->req.sg->size;
r->req.aiocb = dma_blk_read(s->qdev.conf.blk, r->req.sg, r->sector,
r->req.aiocb = dma_blk_read(s->qdev.conf.blk, r->req.sg,
r->sector << BDRV_SECTOR_BITS,
scsi_dma_complete, r);
} else {
scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
@ -539,7 +540,8 @@ static void scsi_write_data(SCSIRequest *req)
if (r->req.sg) {
dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_WRITE);
r->req.resid -= r->req.sg->size;
r->req.aiocb = dma_blk_write(s->qdev.conf.blk, r->req.sg, r->sector,
r->req.aiocb = dma_blk_write(s->qdev.conf.blk, r->req.sg,
r->sector << BDRV_SECTOR_BITS,
scsi_dma_complete, r);
} else {
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,

6
include/sysemu/dma.h
View File

@ -199,14 +199,14 @@ typedef BlockAIOCB *DMAIOFunc(BlockBackend *blk, int64_t offset,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *dma_blk_io(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector_num,
QEMUSGList *sg, uint64_t offset,
DMAIOFunc *io_func, BlockCompletionFunc *cb,
void *opaque, DMADirection dir);
BlockAIOCB *dma_blk_read(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector,
QEMUSGList *sg, uint64_t offset,
BlockCompletionFunc *cb, void *opaque);
BlockAIOCB *dma_blk_write(BlockBackend *blk,
QEMUSGList *sg, uint64_t sector,
QEMUSGList *sg, uint64_t offset,
BlockCompletionFunc *cb, void *opaque);
uint64_t dma_buf_read(uint8_t *ptr, int32_t len, QEMUSGList *sg);
uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg);

2
trace-events
View File

@ -1143,7 +1143,7 @@ win_helper_done(uint32_t tl) "tl=%d"
win_helper_retry(uint32_t tl) "tl=%d"
# dma-helpers.c
dma_blk_io(void *dbs, void *bs, int64_t sector_num, bool to_dev) "dbs=%p bs=%p sector_num=%" PRId64 " to_dev=%d"
dma_blk_io(void *dbs, void *bs, int64_t offset, bool to_dev) "dbs=%p bs=%p offset=%" PRId64 " to_dev=%d"
dma_aio_cancel(void *dbs) "dbs=%p"
dma_complete(void *dbs, int ret, void *cb) "dbs=%p ret=%d cb=%p"
dma_blk_cb(void *dbs, int ret) "dbs=%p ret=%d"