On Oct 19 11:17, Dmitry Fomichev wrote:
> From: Niklas Cassel <niklas.cas...@wdc.com>
>
> Define the structures and constants required to implement
> Namespace Types support.
>
> Namespace Types introduce a new command set, "I/O Command Sets",
> that allows the host to retrieve the command sets associated with
> a namespace. Introduce support for the command set and enable
> detection for the NVM Command Set.
>
> The new workflows for identify commands rely heavily on zero-filled
> identify structs. E.g., certain CNS commands are defined to return
> a zero-filled identify struct when an inactive namespace NSID
> is supplied.
>
> Add a helper function in order to avoid code duplication when
> reporting zero-filled identify structures.
>
> Signed-off-by: Niklas Cassel <niklas.cas...@wdc.com>
> Signed-off-by: Dmitry Fomichev <dmitry.fomic...@wdc.com>
> ---
> hw/block/nvme-ns.c | 2 +
> hw/block/nvme-ns.h | 1 +
> hw/block/nvme.c | 169 +++++++++++++++++++++++++++++++++++-------
> hw/block/trace-events | 7 ++
> include/block/nvme.h | 65 ++++++++++++----
> 5 files changed, 202 insertions(+), 42 deletions(-)
>
> diff --git a/hw/block/nvme-ns.c b/hw/block/nvme-ns.c
> index de735eb9f3..c0362426cc 100644
> --- a/hw/block/nvme-ns.c
> +++ b/hw/block/nvme-ns.c
> @@ -41,6 +41,8 @@ static void nvme_ns_init(NvmeNamespace *ns)
>
> id_ns->nsze = cpu_to_le64(nvme_ns_nlbas(ns));
>
> + ns->csi = NVME_CSI_NVM;
> +
> /* no thin provisioning */
> id_ns->ncap = id_ns->nsze;
> id_ns->nuse = id_ns->ncap;
> diff --git a/hw/block/nvme-ns.h b/hw/block/nvme-ns.h
> index a38071884a..d795e44bab 100644
> --- a/hw/block/nvme-ns.h
> +++ b/hw/block/nvme-ns.h
> @@ -31,6 +31,7 @@ typedef struct NvmeNamespace {
> int64_t size;
> NvmeIdNs id_ns;
> const uint32_t *iocs;
> + uint8_t csi;
>
> NvmeNamespaceParams params;
> } NvmeNamespace;
> diff --git a/hw/block/nvme.c b/hw/block/nvme.c
> index 29139d8a17..ca0d0abf5c 100644
> --- a/hw/block/nvme.c
> +++ b/hw/block/nvme.c
> @@ -1503,6 +1503,13 @@ static uint16_t nvme_create_cq(NvmeCtrl *n,
> NvmeRequest *req)
> return NVME_SUCCESS;
> }
>
> +static uint16_t nvme_rpt_empty_id_struct(NvmeCtrl *n, NvmeRequest *req)
> +{
> + uint8_t id[NVME_IDENTIFY_DATA_SIZE] = {};
[-pedantic] empty initializer list
> +
> + return nvme_dma(n, id, sizeof(id), DMA_DIRECTION_FROM_DEVICE, req);
> +}
> +
> static uint16_t nvme_identify_ctrl(NvmeCtrl *n, NvmeRequest *req)
> {
> trace_pci_nvme_identify_ctrl();
> @@ -1511,11 +1518,23 @@ static uint16_t nvme_identify_ctrl(NvmeCtrl *n,
> NvmeRequest *req)
> DMA_DIRECTION_FROM_DEVICE, req);
> }
>
> +static uint16_t nvme_identify_ctrl_csi(NvmeCtrl *n, NvmeRequest *req)
> +{
> + NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
> +
> + trace_pci_nvme_identify_ctrl_csi(c->csi);
> +
> + if (c->csi == NVME_CSI_NVM) {
> + return nvme_rpt_empty_id_struct(n, req);
> + }
> +
> + return NVME_INVALID_FIELD | NVME_DNR;
> +}
> +
> static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req)
> {
> NvmeNamespace *ns;
> NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
> - NvmeIdNs *id_ns, inactive = { 0 };
> uint32_t nsid = le32_to_cpu(c->nsid);
>
> trace_pci_nvme_identify_ns(nsid);
> @@ -1526,23 +1545,46 @@ static uint16_t nvme_identify_ns(NvmeCtrl *n,
> NvmeRequest *req)
>
> ns = nvme_ns(n, nsid);
> if (unlikely(!ns)) {
> - id_ns = &inactive;
> - } else {
> - id_ns = &ns->id_ns;
> + return nvme_rpt_empty_id_struct(n, req);
> }
>
> - return nvme_dma(n, (uint8_t *)id_ns, sizeof(NvmeIdNs),
> + return nvme_dma(n, (uint8_t *)&ns->id_ns, sizeof(NvmeIdNs),
> DMA_DIRECTION_FROM_DEVICE, req);
> }
>
> +static uint16_t nvme_identify_ns_csi(NvmeCtrl *n, NvmeRequest *req)
> +{
> + NvmeNamespace *ns;
> + NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
> + uint32_t nsid = le32_to_cpu(c->nsid);
> +
> + trace_pci_nvme_identify_ns_csi(nsid, c->csi);
> +
> + if (!nvme_nsid_valid(n, nsid) || nsid == NVME_NSID_BROADCAST) {
> + return NVME_INVALID_NSID | NVME_DNR;
> + }
> +
> + ns = nvme_ns(n, nsid);
> + if (unlikely(!ns)) {
> + return nvme_rpt_empty_id_struct(n, req);
> + }
> +
> + if (c->csi == NVME_CSI_NVM) {
> + return nvme_rpt_empty_id_struct(n, req);
> + }
> +
> + return NVME_INVALID_FIELD | NVME_DNR;
> +}
> +
> static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeRequest *req)
> {
> + NvmeNamespace *ns;
> NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
> - static const int data_len = NVME_IDENTIFY_DATA_SIZE;
> uint32_t min_nsid = le32_to_cpu(c->nsid);
> - uint32_t *list;
> - uint16_t ret;
> - int j = 0;
> + uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {};
[-pedantic] empty initializer list
> + static const int data_len = sizeof(list);
> + uint32_t *list_ptr = (uint32_t *)list;
> + int i, j = 0;
>
> trace_pci_nvme_identify_nslist(min_nsid);
>
> @@ -1556,20 +1598,54 @@ static uint16_t nvme_identify_nslist(NvmeCtrl *n,
> NvmeRequest *req)
> return NVME_INVALID_NSID | NVME_DNR;
> }
>
> - list = g_malloc0(data_len);
> - for (int i = 1; i <= n->num_namespaces; i++) {
> - if (i <= min_nsid || !nvme_ns(n, i)) {
> + for (i = 1; i <= n->num_namespaces; i++) {
> + ns = nvme_ns(n, i);
> + if (!ns) {
> continue;
> }
> - list[j++] = cpu_to_le32(i);
> + if (ns->params.nsid < min_nsid) {
Since i == ns->params.nsid, this should be '<=' like the code you
removed. It really shouldn't be called min_nsid, but oh well.
> + continue;
> + }
> + list_ptr[j++] = cpu_to_le32(ns->params.nsid);
> if (j == data_len / sizeof(uint32_t)) {
> break;
> }
> }
> - ret = nvme_dma(n, (uint8_t *)list, data_len, DMA_DIRECTION_FROM_DEVICE,
> - req);
> - g_free(list);
> - return ret;
> +
> + return nvme_dma(n, list, data_len, DMA_DIRECTION_FROM_DEVICE, req);
> +}
> +
> +static uint16_t nvme_identify_nslist_csi(NvmeCtrl *n, NvmeRequest *req)
> +{
> + NvmeNamespace *ns;
> + NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
> + uint32_t min_nsid = le32_to_cpu(c->nsid);
> + uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {};
> + static const int data_len = sizeof(list);
> + uint32_t *list_ptr = (uint32_t *)list;
> + int i, j = 0;
> +
> + trace_pci_nvme_identify_nslist_csi(min_nsid, c->csi);
> +
> + if (c->csi != NVME_CSI_NVM) {
> + return NVME_INVALID_FIELD | NVME_DNR;
> + }
> +
This is missing the check for 0xffffffff and 0xfffffffe like above.
> + for (i = 1; i <= n->num_namespaces; i++) {
> + ns = nvme_ns(n, i);
> + if (!ns) {
> + continue;
> + }
> + if (ns->params.nsid < min_nsid) {
Should be '<='.
> + continue;
> + }
> + list_ptr[j++] = cpu_to_le32(ns->params.nsid);
> + if (j == data_len / sizeof(uint32_t)) {
> + break;
> + }
> + }
> +
> + return nvme_dma(n, list, data_len, DMA_DIRECTION_FROM_DEVICE, req);
> }
>
> static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeRequest *req)
> @@ -1577,13 +1653,17 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl
> *n, NvmeRequest *req)
> NvmeNamespace *ns;
> NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
> uint32_t nsid = le32_to_cpu(c->nsid);
> - uint8_t list[NVME_IDENTIFY_DATA_SIZE];
> + uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {};
[-pedantic] empty initializer list
>
> struct data {
> struct {
> NvmeIdNsDescr hdr;
> - uint8_t v[16];
> + uint8_t v[NVME_NIDL_UUID];
> } uuid;
> + struct {
> + NvmeIdNsDescr hdr;
> + uint8_t v;
> + } csi;
> };
>
> struct data *ns_descrs = (struct data *)list;
> @@ -1599,19 +1679,31 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl
> *n, NvmeRequest *req)
> return NVME_INVALID_FIELD | NVME_DNR;
> }
>
> - memset(list, 0x0, sizeof(list));
> -
> /*
> * Because the NGUID and EUI64 fields are 0 in the Identify Namespace
> data
> * structure, a Namespace UUID (nidt = 0x3) must be reported in the
> * Namespace Identification Descriptor. Add the namespace UUID here.
> */
> ns_descrs->uuid.hdr.nidt = NVME_NIDT_UUID;
> - ns_descrs->uuid.hdr.nidl = NVME_NIDT_UUID_LEN;
> - memcpy(&ns_descrs->uuid.v, ns->params.uuid.data, NVME_NIDT_UUID_LEN);
> + ns_descrs->uuid.hdr.nidl = NVME_NIDL_UUID;
> + memcpy(&ns_descrs->uuid.v, ns->params.uuid.data, NVME_NIDL_UUID);
>
> - return nvme_dma(n, list, NVME_IDENTIFY_DATA_SIZE,
> - DMA_DIRECTION_FROM_DEVICE, req);
> + ns_descrs->csi.hdr.nidt = NVME_NIDT_CSI;
> + ns_descrs->csi.hdr.nidl = NVME_NIDL_CSI;
> + ns_descrs->csi.v = ns->csi;
> +
> + return nvme_dma(n, list, sizeof(list), DMA_DIRECTION_FROM_DEVICE, req);
> +}
> +
> +static uint16_t nvme_identify_cmd_set(NvmeCtrl *n, NvmeRequest *req)
> +{
> + uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {};
[-pedantic] empty initializer list
> + static const int data_len = sizeof(list);
> +
> + trace_pci_nvme_identify_cmd_set();
> +
> + NVME_SET_CSI(*list, NVME_CSI_NVM);
> + return nvme_dma(n, list, data_len, DMA_DIRECTION_FROM_DEVICE, req);
> }
>
--
One of us - No more doubt, silence or taboo about mental illness.
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