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hw/nvme: basic directives support

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Add support for the Directive Send and Recv commands and the Identify
directive.

Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Gollu Appalanaidu 2023-02-20 12:59:25 +01:00 • committed by Klaus Jensen
parent 771dbc3ac4
commit e181d3da39
3 changed files with 71 additions and 6 deletions
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40
hw/nvme/ctrl.c
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@ -266,6 +266,8 @@ static const uint32_t nvme_cse_acs[256] = {
[NVME_ADM_CMD_VIRT_MNGMT] = NVME_CMD_EFF_CSUPP,
[NVME_ADM_CMD_DBBUF_CONFIG] = NVME_CMD_EFF_CSUPP,
[NVME_ADM_CMD_FORMAT_NVM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC,
[NVME_ADM_CMD_DIRECTIVE_RECV] = NVME_CMD_EFF_CSUPP,
[NVME_ADM_CMD_DIRECTIVE_SEND] = NVME_CMD_EFF_CSUPP,
};
static const uint32_t nvme_cse_iocs_none[256];
@ -6150,6 +6152,37 @@ static uint16_t nvme_dbbuf_config(NvmeCtrl *n, const NvmeRequest *req)
return NVME_SUCCESS;
}
static uint16_t nvme_directive_send(NvmeCtrl *n, NvmeRequest *req)
{
return NVME_INVALID_FIELD | NVME_DNR;
}
static uint16_t nvme_directive_receive(NvmeCtrl *n, NvmeRequest *req)
{
uint32_t dw10 = le32_to_cpu(req->cmd.cdw10);
uint32_t dw11 = le32_to_cpu(req->cmd.cdw11);
uint32_t nsid = le32_to_cpu(req->cmd.nsid);
uint8_t doper, dtype;
uint32_t numd, trans_len;
NvmeDirectiveIdentify id = {
.supported = 1 << NVME_DIRECTIVE_IDENTIFY,
.enabled = 1 << NVME_DIRECTIVE_IDENTIFY,
};
numd = dw10 + 1;
doper = dw11 & 0xff;
dtype = (dw11 >> 8) & 0xff;
trans_len = MIN(sizeof(NvmeDirectiveIdentify), numd << 2);
if (nsid == NVME_NSID_BROADCAST || dtype != NVME_DIRECTIVE_IDENTIFY ||
doper != NVME_DIRECTIVE_RETURN_PARAMS) {
return NVME_INVALID_FIELD | NVME_DNR;
}
return nvme_c2h(n, (uint8_t *)&id, trans_len, req);
}
static uint16_t nvme_admin_cmd(NvmeCtrl *n, NvmeRequest *req)
{
trace_pci_nvme_admin_cmd(nvme_cid(req), nvme_sqid(req), req->cmd.opcode,
@ -6198,6 +6231,10 @@ static uint16_t nvme_admin_cmd(NvmeCtrl *n, NvmeRequest *req)
return nvme_dbbuf_config(n, req);
case NVME_ADM_CMD_FORMAT_NVM:
return nvme_format(n, req);
case NVME_ADM_CMD_DIRECTIVE_SEND:
return nvme_directive_send(n, req);
case NVME_ADM_CMD_DIRECTIVE_RECV:
return nvme_directive_receive(n, req);
default:
assert(false);
}
@ -7454,7 +7491,8 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev)
id->mdts = n->params.mdts;
id->ver = cpu_to_le32(NVME_SPEC_VER);
id->oacs =
cpu_to_le16(NVME_OACS_NS_MGMT | NVME_OACS_FORMAT | NVME_OACS_DBBUF);
cpu_to_le16(NVME_OACS_NS_MGMT | NVME_OACS_FORMAT | NVME_OACS_DBBUF |
NVME_OACS_DIRECTIVES);
id->cntrltype = 0x1;
/*