[PATCH 2/3] hw/block/nvme: add oacs device parameter

[Klaus Jensen <its@irrelevant.dk>]

From: Gollu Appalanaidu <anaidu.gollu@samsung.com>

Add the 'oacs' nvme device parameter to allow optional features to be
enabled/disabled explicitly. Since most of these are optional commands,
make the CSE log pages dynamic to account for the value of OACS once the
optional commands supported added to device.

Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
---
 hw/block/nvme.h |  3 +++
 hw/block/nvme.c | 46 +++++++++++++++++++++++++++++-----------------
 2 files changed, 32 insertions(+), 17 deletions(-)

diff --git a/hw/block/nvme.h b/hw/block/nvme.h
index 65c80cfaef62..cebe6018a234 100644
--- a/hw/block/nvme.h
+++ b/hw/block/nvme.h
@@ -30,6 +30,7 @@ typedef struct NvmeParams {
     uint8_t  zasl;
     bool     legacy_cmb;
     uint16_t oncs;
+    uint16_t oacs;
 } NvmeParams;
 
 typedef struct NvmeAsyncEvent {
@@ -213,6 +214,8 @@ typedef struct NvmeCtrl {
     NvmeIdCtrl      id_ctrl;
     NvmeFeatureVal  features;
 
+    uint32_t acs[NVME_MAX_COMMANDS];
+
     struct {
         uint32_t nvm[NVME_MAX_COMMANDS];
         uint32_t zoned[NVME_MAX_COMMANDS];
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index fbb578a6e669..8b8be3b5f121 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -89,6 +89,11 @@
  *   by the controller. To add support for the optional feature, needs to
  *   set the corresponding support indicated bit.
  *
+ * - `oacs`
+ *   This field indicates the optional Admin commands and features supported
+ *   by the controller. To add support for the optional feature, needs to
+ *   set the corresponding support indicated bit.
+ *
  * nvme namespace device parameters
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  * - `subsys`
@@ -190,20 +195,6 @@ static const uint32_t nvme_feature_cap[NVME_FID_MAX] = {
     [NVME_TIMESTAMP]                = NVME_FEAT_CAP_CHANGE,
 };
 
-static const uint32_t nvme_cse_acs[NVME_MAX_COMMANDS] = {
-    [NVME_ADM_CMD_DELETE_SQ]        = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_CREATE_SQ]        = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_GET_LOG_PAGE]     = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_DELETE_CQ]        = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_CREATE_CQ]        = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_IDENTIFY]         = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_ABORT]            = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_SET_FEATURES]     = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_GET_FEATURES]     = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_ASYNC_EV_REQ]     = NVME_CMD_EFF_CSUPP,
-    [NVME_ADM_CMD_NS_ATTACHMENT]    = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_NIC,
-};
-
 static const uint32_t nvme_cse_iocs_none[NVME_MAX_COMMANDS];
 
 static void nvme_process_sq(void *opaque);
@@ -3068,7 +3059,7 @@ static uint16_t nvme_cmd_effects(NvmeCtrl *n, uint8_t csi, uint32_t buf_len,
         }
     }
 
-    memcpy(log.acs, nvme_cse_acs, sizeof(nvme_cse_acs));
+    memcpy(log.acs, n->acs, sizeof(n->acs));
 
     if (src_iocs) {
         memcpy(log.iocs, src_iocs, sizeof(log.iocs));
@@ -4057,7 +4048,7 @@ static uint16_t nvme_admin_cmd(NvmeCtrl *n, NvmeRequest *req)
     trace_pci_nvme_admin_cmd(nvme_cid(req), nvme_sqid(req), req->cmd.opcode,
                              nvme_adm_opc_str(req->cmd.opcode));
 
-    if (!(nvme_cse_acs[req->cmd.opcode] & NVME_CMD_EFF_CSUPP)) {
+    if (!(n->acs[req->cmd.opcode] & NVME_CMD_EFF_CSUPP)) {
         trace_pci_nvme_err_invalid_admin_opc(req->cmd.opcode);
         return NVME_INVALID_OPCODE | NVME_DNR;
     }
@@ -4868,6 +4859,25 @@ static void nvme_init_cse_iocs(NvmeCtrl *n)
     n->iocs.zoned[NVME_CMD_ZONE_MGMT_RECV] = NVME_CMD_EFF_CSUPP;
 }
 
+static void nvme_init_cse_acs(NvmeCtrl *n)
+{
+    n->acs[NVME_ADM_CMD_DELETE_SQ] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_CREATE_SQ] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_GET_LOG_PAGE] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_DELETE_CQ] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_CREATE_CQ] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_IDENTIFY] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_ABORT] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_SET_FEATURES] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_GET_FEATURES] = NVME_CMD_EFF_CSUPP;
+    n->acs[NVME_ADM_CMD_ASYNC_EV_REQ] = NVME_CMD_EFF_CSUPP;
+
+    if (n->params.oacs & NVME_OACS_NS_MGMT) {
+        n->acs[NVME_ADM_CMD_NS_ATTACHMENT] =
+            NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_NIC;
+    }
+}
+
 static void nvme_init_state(NvmeCtrl *n)
 {
     n->num_namespaces = NVME_MAX_NAMESPACES;
@@ -4881,6 +4891,7 @@ static void nvme_init_state(NvmeCtrl *n)
     n->starttime_ms = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL);
     n->aer_reqs = g_new0(NvmeRequest *, n->params.aerl + 1);
 
+    nvme_init_cse_acs(n);
     nvme_init_cse_iocs(n);
 }
 
@@ -5097,7 +5108,7 @@ 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);
+    id->oacs = cpu_to_le16(n->params.oacs);
     id->cntrltype = 0x1;
 
     /*
@@ -5272,6 +5283,7 @@ static Property nvme_props[] = {
     DEFINE_PROP_UINT16("oncs", NvmeCtrl, params.oncs, NVME_ONCS_WRITE_ZEROES |
                        NVME_ONCS_TIMESTAMP | NVME_ONCS_DSM |
                        NVME_ONCS_COMPARE | NVME_ONCS_FEATURES | NVME_ONCS_COPY),
+    DEFINE_PROP_UINT16("oacs", NvmeCtrl, params.oacs, NVME_OACS_NS_MGMT),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
2.30.1