From: Dmitry Fomichev <dmitry.fomic...@wdc.com>
nvme_write() now handles WRITE, WRITE ZEROES and ZONE_APPEND.
Signed-off-by: Dmitry Fomichev <dmitry.fomic...@wdc.com>
Reviewed-by: Niklas Cassel <niklas.cas...@wdc.com>
[kj: rebased]
Signed-off-by: Klaus Jensen <k.jen...@samsung.com>
---
hw/block/nvme.c | 69 +++++++++++++++++--------------------------
hw/block/trace-events | 1 -
2 files changed, 27 insertions(+), 43 deletions(-)
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 657d0b8b2922..0050ef87cb92 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1449,31 +1449,6 @@ invalid:
return status;
}
-static uint16_t nvme_write_zeroes(NvmeCtrl *n, NvmeRequest *req)
-{
- NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd;
- NvmeNamespace *ns = req->ns;
- uint64_t slba = le64_to_cpu(rw->slba);
- uint32_t nlb = (uint32_t)le16_to_cpu(rw->nlb) + 1;
- uint64_t offset = nvme_l2b(ns, slba);
- uint32_t count = nvme_l2b(ns, nlb);
- uint16_t status;
-
- trace_pci_nvme_write_zeroes(nvme_cid(req), nvme_nsid(ns), slba, nlb);
-
- status = nvme_check_bounds(ns, slba, nlb);
- if (status) {
- trace_pci_nvme_err_invalid_lba_range(slba, nlb, ns->id_ns.nsze);
- return status;
- }
-
- block_acct_start(blk_get_stats(req->ns->blkconf.blk), &req->acct, 0,
- BLOCK_ACCT_WRITE);
- req->aiocb = blk_aio_pwrite_zeroes(req->ns->blkconf.blk, offset, count,
- BDRV_REQ_MAY_UNMAP, nvme_rw_cb, req);
- return NVME_NO_COMPLETE;
-}
-
static uint16_t nvme_write(NvmeCtrl *n, NvmeRequest *req)
{
NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd;
@@ -1483,15 +1458,18 @@ static uint16_t nvme_write(NvmeCtrl *n, NvmeRequest
*req)
uint64_t data_size = nvme_l2b(ns, nlb);
uint64_t data_offset;
BlockBackend *blk = ns->blkconf.blk;
+ bool wrz = rw->opcode == NVME_CMD_WRITE_ZEROES;
uint16_t status;
trace_pci_nvme_write(nvme_cid(req), nvme_io_opc_str(rw->opcode),
nvme_nsid(ns), nlb, data_size, slba);
- status = nvme_check_mdts(n, data_size);
- if (status) {
- trace_pci_nvme_err_mdts(nvme_cid(req), data_size);
- goto invalid;
+ if (!wrz) {
+ status = nvme_check_mdts(n, data_size);
+ if (status) {
+ trace_pci_nvme_err_mdts(nvme_cid(req), data_size);
+ goto invalid;
+ }
}
status = nvme_check_bounds(ns, slba, nlb);
@@ -1500,22 +1478,30 @@ static uint16_t nvme_write(NvmeCtrl *n, NvmeRequest
*req)
goto invalid;
}
- status = nvme_map_dptr(n, data_size, req);
- if (status) {
- goto invalid;
- }
-
data_offset = nvme_l2b(ns, slba);
- block_acct_start(blk_get_stats(blk), &req->acct, data_size,
- BLOCK_ACCT_WRITE);
- if (req->qsg.sg) {
- req->aiocb = dma_blk_write(blk, &req->qsg, data_offset,
- BDRV_SECTOR_SIZE, nvme_rw_cb, req);
+ if (!wrz) {
+ status = nvme_map_dptr(n, data_size, req);
+ if (status) {
+ goto invalid;
+ }
+
+ block_acct_start(blk_get_stats(blk), &req->acct, data_size,
+ BLOCK_ACCT_WRITE);
+ if (req->qsg.sg) {
+ req->aiocb = dma_blk_write(blk, &req->qsg, data_offset,
+ BDRV_SECTOR_SIZE, nvme_rw_cb, req);
+ } else {
+ req->aiocb = blk_aio_pwritev(blk, data_offset, &req->iov, 0,
+ nvme_rw_cb, req);
+ }
} else {
- req->aiocb = blk_aio_pwritev(blk, data_offset, &req->iov, 0,
- nvme_rw_cb, req);
+ block_acct_start(blk_get_stats(blk), &req->acct, 0, BLOCK_ACCT_WRITE);
+ req->aiocb = blk_aio_pwrite_zeroes(blk, data_offset, data_size,
+ BDRV_REQ_MAY_UNMAP, nvme_rw_cb,
+ req);
}
+
return NVME_NO_COMPLETE;
invalid:
@@ -1547,7 +1533,6 @@ static uint16_t nvme_io_cmd(NvmeCtrl *n, NvmeRequest *req)
case NVME_CMD_FLUSH:
return nvme_flush(n, req);
case NVME_CMD_WRITE_ZEROES:
- return nvme_write_zeroes(n, req);
case NVME_CMD_WRITE:
return nvme_write(n, req);
case NVME_CMD_READ:
diff --git a/hw/block/trace-events b/hw/block/trace-events
index cc269b51a1e0..35ea40c49169 100644
--- a/hw/block/trace-events
+++ b/hw/block/trace-events
@@ -47,7 +47,6 @@ pci_nvme_copy(uint16_t cid, uint32_t nsid, uint16_t nr,
uint8_t format) "cid %"P
pci_nvme_copy_source_range(uint64_t slba, uint32_t nlb) "slba 0x%"PRIx64" nlb
%"PRIu32""
pci_nvme_copy_in_complete(uint16_t cid) "cid %"PRIu16""
pci_nvme_copy_cb(uint16_t cid) "cid %"PRIu16""
-pci_nvme_write_zeroes(uint16_t cid, uint32_t nsid, uint64_t slba, uint32_t
nlb) "cid %"PRIu16" nsid %"PRIu32" slba %"PRIu64" nlb %"PRIu32""
pci_nvme_block_status(int64_t offset, int64_t bytes, int64_t pnum, int ret,
bool zeroed) "offset %"PRId64" bytes %"PRId64" pnum %"PRId64" ret 0x%x zeroed
%d"
pci_nvme_dsm(uint16_t cid, uint32_t nsid, uint32_t nr, uint32_t attr) "cid
%"PRIu16" nsid %"PRIu32" nr %"PRIu32" attr 0x%"PRIx32""
pci_nvme_dsm_deallocate(uint16_t cid, uint32_t nsid, uint64_t slba, uint32_t
nlb) "cid %"PRIu16" nsid %"PRIu32" slba %"PRIu64" nlb %"PRIu32""
--
2.29.2
