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[PATCH v2 15/20] nvme: add support for scatter gather lists
|
From: |
Klaus Jensen |
|
Subject: |
[PATCH v2 15/20] nvme: add support for scatter gather lists |
|
Date: |
Tue, 15 Oct 2019 12:38:55 +0200 |
For now, support the Data Block, Segment and Last Segment descriptor
types.
See NVM Express 1.3d, Section 4.4 ("Scatter Gather List (SGL)").
Signed-off-by: Klaus Jensen <address@hidden>
---
block/nvme.c | 18 +-
hw/block/nvme.c | 380 ++++++++++++++++++++++++++++++++++++------
hw/block/trace-events | 3 +
include/block/nvme.h | 62 ++++++-
4 files changed, 398 insertions(+), 65 deletions(-)
diff --git a/block/nvme.c b/block/nvme.c
index 5be3a39b632e..8825c19c72c2 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -440,7 +440,7 @@ static void nvme_identify(BlockDriverState *bs, int
namespace, Error **errp)
error_setg(errp, "Cannot map buffer for DMA");
goto out;
}
- cmd.prp1 = cpu_to_le64(iova);
+ cmd.dptr.prp.prp1 = cpu_to_le64(iova);
if (nvme_cmd_sync(bs, s->queues[0], &cmd)) {
error_setg(errp, "Failed to identify controller");
@@ -529,7 +529,7 @@ static bool nvme_add_io_queue(BlockDriverState *bs, Error
**errp)
}
cmd = (NvmeCmd) {
.opcode = NVME_ADM_CMD_CREATE_CQ,
- .prp1 = cpu_to_le64(q->cq.iova),
+ .dptr.prp.prp1 = cpu_to_le64(q->cq.iova),
.cdw10 = cpu_to_le32(((queue_size - 1) << 16) | (n & 0xFFFF)),
.cdw11 = cpu_to_le32(0x3),
};
@@ -540,7 +540,7 @@ static bool nvme_add_io_queue(BlockDriverState *bs, Error
**errp)
}
cmd = (NvmeCmd) {
.opcode = NVME_ADM_CMD_CREATE_SQ,
- .prp1 = cpu_to_le64(q->sq.iova),
+ .dptr.prp.prp1 = cpu_to_le64(q->sq.iova),
.cdw10 = cpu_to_le32(((queue_size - 1) << 16) | (n & 0xFFFF)),
.cdw11 = cpu_to_le32(0x1 | (n << 16)),
};
@@ -889,16 +889,16 @@ try_map:
case 0:
abort();
case 1:
- cmd->prp1 = pagelist[0];
- cmd->prp2 = 0;
+ cmd->dptr.prp.prp1 = pagelist[0];
+ cmd->dptr.prp.prp2 = 0;
break;
case 2:
- cmd->prp1 = pagelist[0];
- cmd->prp2 = pagelist[1];
+ cmd->dptr.prp.prp1 = pagelist[0];
+ cmd->dptr.prp.prp2 = pagelist[1];
break;
default:
- cmd->prp1 = pagelist[0];
- cmd->prp2 = cpu_to_le64(req->prp_list_iova + sizeof(uint64_t));
+ cmd->dptr.prp.prp1 = pagelist[0];
+ cmd->dptr.prp.prp2 = cpu_to_le64(req->prp_list_iova +
sizeof(uint64_t));
break;
}
trace_nvme_cmd_map_qiov(s, cmd, req, qiov, entries);
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index f4b9bd36a04e..0a5cd079df9a 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -296,6 +296,198 @@ unmap:
return status;
}
+static uint16_t nvme_map_sgl_data(NvmeCtrl *n, QEMUSGList *qsg,
+ NvmeSglDescriptor *segment, uint64_t nsgld, uint32_t *len,
+ NvmeRequest *req)
+{
+ dma_addr_t addr, trans_len;
+
+ for (int i = 0; i < nsgld; i++) {
+ if (NVME_SGL_TYPE(segment[i].type) != SGL_DESCR_TYPE_DATA_BLOCK) {
+ trace_nvme_err_invalid_sgl_descriptor(req->cid,
+ NVME_SGL_TYPE(segment[i].type));
+ return NVME_SGL_DESCRIPTOR_TYPE_INVALID | NVME_DNR;
+ }
+
+ if (*len == 0) {
+ if (!NVME_CTRL_SGLS_EXCESS_LENGTH(n->id_ctrl.sgls)) {
+ trace_nvme_err_invalid_sgl_excess_length(req->cid);
+ return NVME_DATA_SGL_LENGTH_INVALID | NVME_DNR;
+ }
+
+ break;
+ }
+
+ addr = le64_to_cpu(segment[i].addr);
+ trans_len = MIN(*len, le64_to_cpu(segment[i].len));
+
+ if (nvme_addr_is_cmb(n, addr)) {
+ /*
+ * All data and metadata, if any, associated with a particular
+ * command shall be located in either the CMB or host memory. Thus,
+ * if an address if found to be in the CMB and we have already
+ * mapped data that is in host memory, the use is invalid.
+ */
+ if (!nvme_req_is_cmb(req) && qsg->size) {
+ return NVME_INVALID_USE_OF_CMB | NVME_DNR;
+ }
+
+ nvme_req_set_cmb(req);
+ } else {
+ /*
+ * Similarly, if the address does not reference the CMB, but we
+ * have already established that the request has data or metadata
+ * in the CMB, the use is invalid.
+ */
+ if (nvme_req_is_cmb(req)) {
+ return NVME_INVALID_USE_OF_CMB | NVME_DNR;
+ }
+ }
+
+ qemu_sglist_add(qsg, addr, trans_len);
+
+ *len -= trans_len;
+ }
+
+ return NVME_SUCCESS;
+}
+
+static uint16_t nvme_map_sgl(NvmeCtrl *n, QEMUSGList *qsg,
+ NvmeSglDescriptor sgl, uint32_t len, NvmeRequest *req)
+{
+ const int MAX_NSGLD = 256;
+
+ NvmeSglDescriptor segment[MAX_NSGLD];
+ uint64_t nsgld;
+ uint16_t status;
+ bool sgl_in_cmb = false;
+ hwaddr addr = le64_to_cpu(sgl.addr);
+
+ trace_nvme_map_sgl(req->cid, NVME_SGL_TYPE(sgl.type), req->nlb, len);
+
+ pci_dma_sglist_init(qsg, &n->parent_obj, 1);
+
+ /*
+ * If the entire transfer can be described with a single data block it can
+ * be mapped directly.
+ */
+ if (NVME_SGL_TYPE(sgl.type) == SGL_DESCR_TYPE_DATA_BLOCK) {
+ status = nvme_map_sgl_data(n, qsg, &sgl, 1, &len, req);
+ if (status) {
+ goto unmap;
+ }
+
+ goto out;
+ }
+
+ /*
+ * If the segment is located in the CMB, the submission queue of the
+ * request must also reside there.
+ */
+ if (nvme_addr_is_cmb(n, addr)) {
+ if (!nvme_addr_is_cmb(n, req->sq->dma_addr)) {
+ return NVME_INVALID_USE_OF_CMB | NVME_DNR;
+ }
+
+ sgl_in_cmb = true;
+ }
+
+ while (NVME_SGL_TYPE(sgl.type) == SGL_DESCR_TYPE_SEGMENT) {
+ bool addr_is_cmb;
+
+ nsgld = le64_to_cpu(sgl.len) / sizeof(NvmeSglDescriptor);
+
+ /* read the segment in chunks of 256 descriptors (4k) */
+ while (nsgld > MAX_NSGLD) {
+ nvme_addr_read(n, addr, segment, sizeof(segment));
+
+ status = nvme_map_sgl_data(n, qsg, segment, MAX_NSGLD, &len, req);
+ if (status) {
+ goto unmap;
+ }
+
+ nsgld -= MAX_NSGLD;
+ addr += MAX_NSGLD * sizeof(NvmeSglDescriptor);
+ }
+
+ nvme_addr_read(n, addr, segment, nsgld * sizeof(NvmeSglDescriptor));
+
+ sgl = segment[nsgld - 1];
+ addr = le64_to_cpu(sgl.addr);
+
+ /* an SGL is allowed to end with a Data Block in a regular Segment */
+ if (NVME_SGL_TYPE(sgl.type) == SGL_DESCR_TYPE_DATA_BLOCK) {
+ status = nvme_map_sgl_data(n, qsg, segment, nsgld, &len, req);
+ if (status) {
+ goto unmap;
+ }
+
+ goto out;
+ }
+
+ /* do not map last descriptor */
+ status = nvme_map_sgl_data(n, qsg, segment, nsgld - 1, &len, req);
+ if (status) {
+ goto unmap;
+ }
+
+ /*
+ * If the next segment is in the CMB, make sure that the sgl was
+ * already located there.
+ */
+ addr_is_cmb = nvme_addr_is_cmb(n, addr);
+ if ((sgl_in_cmb && !addr_is_cmb) || (!sgl_in_cmb && addr_is_cmb)) {
+ status = NVME_INVALID_USE_OF_CMB | NVME_DNR;
+ goto unmap;
+ }
+ }
+
+ /*
+ * If the segment did not end with a Data Block or a Segment descriptor, it
+ * must be a Last Segment descriptor.
+ */
+ if (NVME_SGL_TYPE(sgl.type) != SGL_DESCR_TYPE_LAST_SEGMENT) {
+ trace_nvme_err_invalid_sgl_descriptor(req->cid,
+ NVME_SGL_TYPE(sgl.type));
+ return NVME_SGL_DESCRIPTOR_TYPE_INVALID | NVME_DNR;
+ }
+
+ nsgld = le64_to_cpu(sgl.len) / sizeof(NvmeSglDescriptor);
+
+ while (nsgld > MAX_NSGLD) {
+ nvme_addr_read(n, addr, segment, sizeof(segment));
+
+ status = nvme_map_sgl_data(n, qsg, segment, MAX_NSGLD, &len, req);
+ if (status) {
+ goto unmap;
+ }
+
+ nsgld -= MAX_NSGLD;
+ addr += MAX_NSGLD * sizeof(NvmeSglDescriptor);
+ }
+
+ nvme_addr_read(n, addr, segment, nsgld * sizeof(NvmeSglDescriptor));
+
+ status = nvme_map_sgl_data(n, qsg, segment, nsgld, &len, req);
+ if (status) {
+ goto unmap;
+ }
+
+out:
+ /* if there is any residual left in len, the SGL was too short */
+ if (len) {
+ status = NVME_DATA_SGL_LENGTH_INVALID | NVME_DNR;
+ goto unmap;
+ }
+
+ return NVME_SUCCESS;
+
+unmap:
+ qemu_sglist_destroy(qsg);
+
+ return status;
+}
+
static void dma_to_cmb(NvmeCtrl *n, QEMUSGList *qsg, QEMUIOVector *iov)
{
for (int i = 0; i < qsg->nsg; i++) {
@@ -341,6 +533,56 @@ static uint16_t nvme_dma_write_prp(NvmeCtrl *n, uint8_t
*ptr, uint32_t len,
return status;
}
+static uint16_t nvme_dma_write_sgl(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
+ NvmeSglDescriptor sgl, NvmeRequest *req)
+{
+ QEMUSGList qsg;
+ uint16_t err = NVME_SUCCESS;
+
+ err = nvme_map_sgl(n, &qsg, sgl, len, req);
+ if (err) {
+ return err;
+ }
+
+ if (nvme_req_is_cmb(req)) {
+ QEMUIOVector iov;
+
+ qemu_iovec_init(&iov, qsg.nsg);
+ dma_to_cmb(n, &qsg, &iov);
+
+ if (unlikely(qemu_iovec_to_buf(&iov, 0, ptr, len) != len)) {
+ trace_nvme_err_invalid_dma();
+ err = NVME_INVALID_FIELD | NVME_DNR;
+ }
+
+ qemu_iovec_destroy(&iov);
+
+ return err;
+ }
+
+ if (unlikely(dma_buf_write(ptr, len, &qsg))) {
+ trace_nvme_err_invalid_dma();
+ err = NVME_INVALID_FIELD | NVME_DNR;
+ }
+
+ qemu_sglist_destroy(&qsg);
+
+ return err;
+}
+
+static uint16_t nvme_dma_write(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
+ NvmeCmd *cmd, NvmeRequest *req)
+{
+ if (NVME_CMD_FLAGS_PSDT(cmd->flags)) {
+ return nvme_dma_write_sgl(n, ptr, len, cmd->dptr.sgl, req);
+ }
+
+ uint64_t prp1 = le64_to_cpu(cmd->dptr.prp.prp1);
+ uint64_t prp2 = le64_to_cpu(cmd->dptr.prp.prp2);
+
+ return nvme_dma_write_prp(n, ptr, len, prp1, prp2, req);
+}
+
static uint16_t nvme_dma_read_prp(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
uint64_t prp1, uint64_t prp2, NvmeRequest *req)
{
@@ -378,13 +620,68 @@ out:
return status;
}
+static uint16_t nvme_dma_read_sgl(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
+ NvmeSglDescriptor sgl, NvmeCmd *cmd, NvmeRequest *req)
+{
+ QEMUSGList qsg;
+ uint16_t err = NVME_SUCCESS;
+
+ err = nvme_map_sgl(n, &qsg, sgl, len, req);
+ if (err) {
+ return err;
+ }
+
+ if (nvme_req_is_cmb(req)) {
+ QEMUIOVector iov;
+
+ qemu_iovec_init(&iov, qsg.nsg);
+ dma_to_cmb(n, &qsg, &iov);
+
+ if (unlikely(qemu_iovec_from_buf(&iov, 0, ptr, len) != len)) {
+ trace_nvme_err_invalid_dma();
+ err = NVME_INVALID_FIELD | NVME_DNR;
+ }
+
+ qemu_iovec_destroy(&iov);
+
+ goto out;
+ }
+
+ if (unlikely(dma_buf_read(ptr, len, &qsg))) {
+ trace_nvme_err_invalid_dma();
+ err = NVME_INVALID_FIELD | NVME_DNR;
+ }
+
+out:
+ qemu_sglist_destroy(&qsg);
+
+ return err;
+}
+
+static uint16_t nvme_dma_read(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
+ NvmeCmd *cmd, NvmeRequest *req)
+{
+ if (NVME_CMD_FLAGS_PSDT(cmd->flags)) {
+ return nvme_dma_read_sgl(n, ptr, len, cmd->dptr.sgl, cmd, req);
+ }
+
+ uint64_t prp1 = le64_to_cpu(cmd->dptr.prp.prp1);
+ uint64_t prp2 = le64_to_cpu(cmd->dptr.prp.prp2);
+
+ return nvme_dma_read_prp(n, ptr, len, prp1, prp2, req);
+}
+
static uint16_t nvme_map(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
{
- NvmeNamespace *ns = req->ns;
+ uint32_t len = req->nlb << nvme_ns_lbads(req->ns);
+ uint64_t prp1, prp2;
+
+ if (NVME_CMD_FLAGS_PSDT(cmd->flags)) {
+ return nvme_map_sgl(n, &req->qsg, cmd->dptr.sgl, len, req);
+ }
- uint32_t len = req->nlb << nvme_ns_lbads(ns);
- uint64_t prp1 = le64_to_cpu(cmd->prp1);
- uint64_t prp2 = le64_to_cpu(cmd->prp2);
+ prp1 = le64_to_cpu(cmd->dptr.prp.prp1);
+ prp2 = le64_to_cpu(cmd->dptr.prp.prp2);
return nvme_map_prp(n, &req->qsg, prp1, prp2, len, req);
}
@@ -975,8 +1272,6 @@ static uint16_t nvme_error_info(NvmeCtrl *n, NvmeCmd *cmd,
uint8_t rae,
uint32_t buf_len, uint64_t off, NvmeRequest *req)
{
uint32_t trans_len;
- uint64_t prp1 = le64_to_cpu(cmd->prp1);
- uint64_t prp2 = le64_to_cpu(cmd->prp2);
if (off > sizeof(*n->elpes) * (n->params.elpe + 1)) {
return NVME_INVALID_FIELD | NVME_DNR;
@@ -988,15 +1283,12 @@ static uint16_t nvme_error_info(NvmeCtrl *n, NvmeCmd
*cmd, uint8_t rae,
nvme_clear_events(n, NVME_AER_TYPE_ERROR);
}
- return nvme_dma_read_prp(n, (uint8_t *) n->elpes + off, trans_len, prp1,
- prp2, req);
+ return nvme_dma_read(n, (uint8_t *) n->elpes + off, trans_len, cmd, req);
}
static uint16_t nvme_smart_info(NvmeCtrl *n, NvmeCmd *cmd, uint8_t rae,
uint32_t buf_len, uint64_t off, NvmeRequest *req)
{
- uint64_t prp1 = le64_to_cpu(cmd->prp1);
- uint64_t prp2 = le64_to_cpu(cmd->prp2);
uint32_t nsid = le32_to_cpu(cmd->nsid);
uint32_t trans_len;
@@ -1047,16 +1339,13 @@ static uint16_t nvme_smart_info(NvmeCtrl *n, NvmeCmd
*cmd, uint8_t rae,
nvme_clear_events(n, NVME_AER_TYPE_SMART);
}
- return nvme_dma_read_prp(n, (uint8_t *) &smart + off, trans_len, prp1,
- prp2, req);
+ return nvme_dma_read(n, (uint8_t *) &smart + off, trans_len, cmd, req);
}
static uint16_t nvme_fw_log_info(NvmeCtrl *n, NvmeCmd *cmd, uint32_t buf_len,
uint64_t off, NvmeRequest *req)
{
uint32_t trans_len;
- uint64_t prp1 = le64_to_cpu(cmd->prp1);
- uint64_t prp2 = le64_to_cpu(cmd->prp2);
NvmeFwSlotInfoLog fw_log;
if (off > sizeof(fw_log)) {
@@ -1067,8 +1356,7 @@ static uint16_t nvme_fw_log_info(NvmeCtrl *n, NvmeCmd
*cmd, uint32_t buf_len,
trans_len = MIN(sizeof(fw_log) - off, buf_len);
- return nvme_dma_read_prp(n, (uint8_t *) &fw_log + off, trans_len, prp1,
- prp2, req);
+ return nvme_dma_read(n, (uint8_t *) &fw_log + off, trans_len, cmd, req);
}
static uint16_t nvme_get_log(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
@@ -1210,25 +1498,18 @@ static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeCmd
*cmd)
return NVME_SUCCESS;
}
-static uint16_t nvme_identify_ctrl(NvmeCtrl *n, NvmeIdentify *c,
- NvmeRequest *req)
+static uint16_t nvme_identify_ctrl(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
{
- uint64_t prp1 = le64_to_cpu(c->prp1);
- uint64_t prp2 = le64_to_cpu(c->prp2);
-
trace_nvme_identify_ctrl();
- return nvme_dma_read_prp(n, (uint8_t *)&n->id_ctrl, sizeof(n->id_ctrl),
- prp1, prp2, req);
+ return nvme_dma_read(n, (uint8_t *) &n->id_ctrl, sizeof(n->id_ctrl), cmd,
+ req);
}
-static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeIdentify *c,
- NvmeRequest *req)
+static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
{
NvmeNamespace *ns;
- uint32_t nsid = le32_to_cpu(c->nsid);
- uint64_t prp1 = le64_to_cpu(c->prp1);
- uint64_t prp2 = le64_to_cpu(c->prp2);
+ uint32_t nsid = le32_to_cpu(cmd->nsid);
trace_nvme_identify_ns(nsid);
@@ -1239,17 +1520,15 @@ static uint16_t nvme_identify_ns(NvmeCtrl *n,
NvmeIdentify *c,
ns = &n->namespaces[nsid - 1];
- return nvme_dma_read_prp(n, (uint8_t *)&ns->id_ns, sizeof(ns->id_ns),
- prp1, prp2, req);
+ return nvme_dma_read(n, (uint8_t *) &ns->id_ns, sizeof(ns->id_ns), cmd,
+ req);
}
-static uint16_t nvme_identify_ns_list(NvmeCtrl *n, NvmeIdentify *c,
+static uint16_t nvme_identify_ns_list(NvmeCtrl *n, NvmeCmd *cmd,
NvmeRequest *req)
{
static const int data_len = 4 * KiB;
- uint32_t min_nsid = le32_to_cpu(c->nsid);
- uint64_t prp1 = le64_to_cpu(c->prp1);
- uint64_t prp2 = le64_to_cpu(c->prp2);
+ uint32_t min_nsid = le32_to_cpu(cmd->nsid);
uint32_t *list;
uint16_t ret;
int i, j = 0;
@@ -1266,12 +1545,12 @@ static uint16_t nvme_identify_ns_list(NvmeCtrl *n,
NvmeIdentify *c,
break;
}
}
- ret = nvme_dma_read_prp(n, (uint8_t *)list, data_len, prp1, prp2, req);
+ ret = nvme_dma_read(n, (uint8_t *) list, data_len, cmd, req);
g_free(list);
return ret;
}
-static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeIdentify *c,
+static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeCmd *cmd,
NvmeRequest *req)
{
static const int len = 4096;
@@ -1283,9 +1562,7 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n,
NvmeIdentify *c,
uint8_t nid[16];
};
- uint32_t nsid = le32_to_cpu(c->nsid);
- uint64_t prp1 = le64_to_cpu(c->prp1);
- uint64_t prp2 = le64_to_cpu(c->prp2);
+ uint32_t nsid = le32_to_cpu(cmd->nsid);
struct ns_descr *list;
uint16_t ret;
@@ -1302,7 +1579,7 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n,
NvmeIdentify *c,
list->nidl = 0x10;
*(uint32_t *) &list->nid[12] = cpu_to_be32(nsid);
- ret = nvme_dma_read_prp(n, (uint8_t *) list, len, prp1, prp2, req);
+ ret = nvme_dma_read(n, (uint8_t *) list, len, cmd, req);
g_free(list);
return ret;
}
@@ -1313,13 +1590,13 @@ static uint16_t nvme_identify(NvmeCtrl *n, NvmeCmd
*cmd, NvmeRequest *req)
switch (le32_to_cpu(c->cns)) {
case 0x00:
- return nvme_identify_ns(n, c, req);
+ return nvme_identify_ns(n, cmd, req);
case 0x01:
- return nvme_identify_ctrl(n, c, req);
+ return nvme_identify_ctrl(n, cmd, req);
case 0x02:
- return nvme_identify_ns_list(n, c, req);
+ return nvme_identify_ns_list(n, cmd, req);
case 0x03:
- return nvme_identify_ns_descr_list(n, c, req);
+ return nvme_identify_ns_descr_list(n, cmd, req);
default:
trace_nvme_err_invalid_identify_cns(le32_to_cpu(c->cns));
return NVME_INVALID_FIELD | NVME_DNR;
@@ -1381,13 +1658,10 @@ static inline uint64_t nvme_get_timestamp(const
NvmeCtrl *n)
static uint16_t nvme_get_feature_timestamp(NvmeCtrl *n, NvmeCmd *cmd,
NvmeRequest *req)
{
- uint64_t prp1 = le64_to_cpu(cmd->prp1);
- uint64_t prp2 = le64_to_cpu(cmd->prp2);
-
uint64_t timestamp = nvme_get_timestamp(n);
- return nvme_dma_read_prp(n, (uint8_t *)×tamp, sizeof(timestamp),
- prp1, prp2, req);
+ return nvme_dma_read(n, (uint8_t *)×tamp, sizeof(timestamp), cmd,
+ req);
}
static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
@@ -1452,11 +1726,9 @@ static uint16_t nvme_set_feature_timestamp(NvmeCtrl *n,
NvmeCmd *cmd,
{
uint16_t ret;
uint64_t timestamp;
- uint64_t prp1 = le64_to_cpu(cmd->prp1);
- uint64_t prp2 = le64_to_cpu(cmd->prp2);
- ret = nvme_dma_write_prp(n, (uint8_t *)×tamp,
- sizeof(timestamp), prp1, prp2, req);
+ ret = nvme_dma_write(n, (uint8_t *)×tamp, sizeof(timestamp), cmd,
+ req);
if (ret != NVME_SUCCESS) {
return ret;
}
@@ -2241,6 +2513,8 @@ static void nvme_init_ctrl(NvmeCtrl *n)
id->vwc = 1;
}
+ id->sgls = cpu_to_le32(0x1);
+
strcpy((char *) id->subnqn, "nqn.2019-08.org.qemu:");
pstrcat((char *) id->subnqn, sizeof(id->subnqn), n->params.serial);
diff --git a/hw/block/trace-events b/hw/block/trace-events
index c7e0a1849043..59d42a3b8c39 100644
--- a/hw/block/trace-events
+++ b/hw/block/trace-events
@@ -34,6 +34,7 @@ nvme_irq_pin(void) "pulsing IRQ pin"
nvme_irq_masked(void) "IRQ is masked"
nvme_dma_read(uint64_t prp1, uint64_t prp2) "DMA read, prp1=0x%"PRIx64"
prp2=0x%"PRIx64""
nvme_map_prp(uint16_t cid, uint8_t opc, uint64_t trans_len, uint32_t len,
uint64_t prp1, uint64_t prp2, int num_prps) "cid %"PRIu16" opc 0x%"PRIx8"
trans_len %"PRIu64" len %"PRIu32" prp1 0x%"PRIx64" prp2 0x%"PRIx64" num_prps %d"
+nvme_map_sgl(uint16_t cid, uint8_t typ, uint32_t nlb, uint64_t len) "cid
%"PRIu16" type 0x%"PRIx8" nlb %"PRIu32" len %"PRIu64""
nvme_req_register_aio(uint16_t cid, void *aio, const char *blkname, uint64_t
offset, uint64_t count, const char *opc, void *req) "cid %"PRIu16" aio %p blk
\"%s\" offset %"PRIu64" count %"PRIu64" opc \"%s\" req %p"
nvme_aio_cb(uint16_t cid, void *aio, const char *blkname, uint64_t offset,
const char *opc, void *req) "cid %"PRIu16" aio %p blk \"%s\" offset %"PRIu64"
opc \"%s\" req %p"
nvme_io_cmd(uint16_t cid, uint32_t nsid, uint16_t sqid, uint8_t opcode) "cid
%"PRIu16" nsid %"PRIu32" sqid %"PRIu16" opc 0x%"PRIx8""
@@ -82,6 +83,8 @@ nvme_mmio_shutdown_cleared(void) "shutdown bit cleared"
nvme_err_mdts(uint16_t cid, size_t mdts, size_t len) "cid %"PRIu16" mdts
%"PRIu64" len %"PRIu64""
nvme_err_prinfo(uint16_t cid, uint16_t ctrl) "cid %"PRIu16" ctrl %"PRIu16""
nvme_err_aio(uint16_t cid, void *aio, const char *blkname, uint64_t offset,
const char *opc, void *req, uint16_t status) "cid %"PRIu16" aio %p blk \"%s\"
offset %"PRIu64" opc \"%s\" req %p status 0x%"PRIx16""
+nvme_err_invalid_sgl_descriptor(uint16_t cid, uint8_t typ) "cid %"PRIu16" type
0x%"PRIx8""
+nvme_err_invalid_sgl_excess_length(uint16_t cid) "cid %"PRIu16""
nvme_err_invalid_dma(void) "PRP/SGL is too small for transfer size"
nvme_err_invalid_prplist_ent(uint64_t prplist) "PRP list entry is null or not
page aligned: 0x%"PRIx64""
nvme_err_invalid_prp2_align(uint64_t prp2) "PRP2 is not page aligned:
0x%"PRIx64""
diff --git a/include/block/nvme.h b/include/block/nvme.h
index d4990db4fdf8..ba0a9d4e328f 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -205,15 +205,53 @@ enum NvmeCmbszMask {
#define NVME_CMBSZ_GETSIZE(cmbsz) \
(NVME_CMBSZ_SZ(cmbsz) * (1 << (12 + 4 * NVME_CMBSZ_SZU(cmbsz))))
+enum NvmeSglDescriptorType {
+ SGL_DESCR_TYPE_DATA_BLOCK = 0x0,
+ SGL_DESCR_TYPE_BIT_BUCKET = 0x1,
+ SGL_DESCR_TYPE_SEGMENT = 0x2,
+ SGL_DESCR_TYPE_LAST_SEGMENT = 0x3,
+ SGL_DESCR_TYPE_KEYED_DATA_BLOCK = 0x4,
+
+ SGL_DESCR_TYPE_VENDOR_SPECIFIC = 0xf,
+};
+
+enum NvmeSglDescriptorSubtype {
+ SGL_DESCR_SUBTYPE_ADDRESS = 0x0,
+ SGL_DESCR_SUBTYPE_OFFSET = 0x1,
+};
+
+typedef struct NvmeSglDescriptor {
+ uint64_t addr;
+ uint32_t len;
+ uint8_t rsvd[3];
+ uint8_t type;
+} NvmeSglDescriptor;
+
+#define NVME_SGL_TYPE(type) (type >> 4)
+
+typedef union NvmeCmdDptr {
+ struct {
+ uint64_t prp1;
+ uint64_t prp2;
+ } prp;
+
+ NvmeSglDescriptor sgl;
+} NvmeCmdDptr;
+
+enum NvmePsdt {
+ PSDT_PRP = 0x0,
+ PSDT_SGL_MPTR_CONTIGUOUS = 0x1,
+ PSDT_SGL_MPTR_SGL = 0x2,
+};
+
typedef struct NvmeCmd {
uint8_t opcode;
- uint8_t fuse;
+ uint8_t flags;
uint16_t cid;
uint32_t nsid;
uint64_t res1;
uint64_t mptr;
- uint64_t prp1;
- uint64_t prp2;
+ NvmeCmdDptr dptr;
uint32_t cdw10;
uint32_t cdw11;
uint32_t cdw12;
@@ -222,6 +260,9 @@ typedef struct NvmeCmd {
uint32_t cdw15;
} NvmeCmd;
+#define NVME_CMD_FLAGS_FUSE(flags) (flags & 0x3)
+#define NVME_CMD_FLAGS_PSDT(flags) ((flags >> 6) & 0x3)
+
enum NvmeAdminCommands {
NVME_ADM_CMD_DELETE_SQ = 0x00,
NVME_ADM_CMD_CREATE_SQ = 0x01,
@@ -427,6 +468,11 @@ enum NvmeStatusCodes {
NVME_CMD_ABORT_MISSING_FUSE = 0x000a,
NVME_INVALID_NSID = 0x000b,
NVME_CMD_SEQ_ERROR = 0x000c,
+ NVME_INVALID_SGL_SEG_DESCRIPTOR = 0x000d,
+ NVME_INVALID_NUM_SGL_DESCRIPTORS = 0x000e,
+ NVME_DATA_SGL_LENGTH_INVALID = 0x000f,
+ NVME_METADATA_SGL_LENGTH_INVALID = 0x0010,
+ NVME_SGL_DESCRIPTOR_TYPE_INVALID = 0x0011,
NVME_INVALID_USE_OF_CMB = 0x0012,
NVME_LBA_RANGE = 0x0080,
NVME_CAP_EXCEEDED = 0x0081,
@@ -623,6 +669,16 @@ enum NvmeIdCtrlOncs {
#define NVME_CTRL_CQES_MIN(cqes) ((cqes) & 0xf)
#define NVME_CTRL_CQES_MAX(cqes) (((cqes) >> 4) & 0xf)
+#define NVME_CTRL_SGLS_SUPPORTED(sgls) ((sgls) & 0x3)
+#define NVME_CTRL_SGLS_SUPPORTED_NO_ALIGNMENT(sgls) ((sgls) & (0x1 << 0))
+#define NVME_CTRL_SGLS_SUPPORTED_DWORD_ALIGNMENT(sgls) ((sgls) & (0x1 << 1))
+#define NVME_CTRL_SGLS_KEYED(sgls) ((sgls) & (0x1 << 2))
+#define NVME_CTRL_SGLS_BITBUCKET(sgls) ((sgls) & (0x1 << 16))
+#define NVME_CTRL_SGLS_MPTR_CONTIGUOUS(sgls) ((sgls) & (0x1 << 17))
+#define NVME_CTRL_SGLS_EXCESS_LENGTH(sgls) ((sgls) & (0x1 << 18))
+#define NVME_CTRL_SGLS_MPTR_SGL(sgls) ((sgls) & (0x1 << 19))
+#define NVME_CTRL_SGLS_ADDR_OFFSET(sgls) ((sgls) & (0x1 << 20))
+
typedef struct NvmeFeatureVal {
uint32_t arbitration;
uint32_t power_mgmt;
--
2.23.0
- [PATCH v2 02/20] nvme: move device parameters to separate struct, (continued)
- [PATCH v2 02/20] nvme: move device parameters to separate struct, Klaus Jensen, 2019/10/15
- [PATCH v2 08/20] nvme: add support for the get log page command, Klaus Jensen, 2019/10/15
- [PATCH v2 09/20] nvme: add support for the asynchronous event request command, Klaus Jensen, 2019/10/15
- [PATCH v2 17/20] nvme: bump controller pci device id, Klaus Jensen, 2019/10/15
- [PATCH v2 19/20] nvme: make lba data size configurable, Klaus Jensen, 2019/10/15
- [PATCH v2 11/20] nvme: add missing mandatory features, Klaus Jensen, 2019/10/15
- [PATCH v2 12/20] nvme: bump supported specification version to 1.3, Klaus Jensen, 2019/10/15
- [PATCH v2 18/20] nvme: remove redundant NvmeCmd pointer parameter, Klaus Jensen, 2019/10/15
- [PATCH v2 14/20] nvme: allow multiple aios per command, Klaus Jensen, 2019/10/15
- [PATCH v2 13/20] nvme: refactor prp mapping, Klaus Jensen, 2019/10/15
- [PATCH v2 15/20] nvme: add support for scatter gather lists,
Klaus Jensen <=
- [PATCH v2 16/20] nvme: support multiple namespaces, Klaus Jensen, 2019/10/15
- [PATCH v2 20/20] nvme: handle dma errors, Klaus Jensen, 2019/10/15
- Re: [PATCH v2 00/20] nvme: support NVMe v1.3d, SGLs and multiple namespaces, no-reply, 2019/10/15
- Re: [PATCH v2 00/20] nvme: support NVMe v1.3d, SGLs and multiple namespaces, no-reply, 2019/10/15
- Re: [PATCH v2 00/20] nvme: support NVMe v1.3d, SGLs and multiple namespaces, Fam Zheng, 2019/10/16
- Re: [PATCH v2 00/20] nvme: support NVMe v1.3d, SGLs and multiple namespaces, Klaus Birkelund, 2019/10/28