tools/testing/cxl: add mock output for the GET_HEALTH_INFO command

Add mocked health information for cxl_test memdevs. This allows
cxl-cli's 'list' command to display the canned health_info fields.

Cc: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/20211018051251.2289112-1-vishal.l.verma@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
index 555faa4a57f739e6684085ac8f9d02215d5710cb..8c2086c4caef7a140575e2c2e18a82ea50800a29 100644 (file)
--- a/tools/testing/cxl/test/mem.c
+++ b/tools/testing/cxl/test/mem.c
@@ -28,8 +28,24 @@ static struct cxl_cel_entry mock_cel[] = {
                .opcode = cpu_to_le16(CXL_MBOX_OP_SET_LSA),
                .effect = cpu_to_le16(EFFECT(1) | EFFECT(2)),
        },
+       {
+               .opcode = cpu_to_le16(CXL_MBOX_OP_GET_HEALTH_INFO),
+               .effect = cpu_to_le16(0),
+       },
 };
 
+/* See CXL 2.0 Table 181 Get Health Info Output Payload */
+struct cxl_mbox_health_info {
+       u8 health_status;
+       u8 media_status;
+       u8 ext_status;
+       u8 life_used;
+       __le16 temperature;
+       __le32 dirty_shutdowns;
+       __le32 volatile_errors;
+       __le32 pmem_errors;
+} __packed;
+
 static struct {
        struct cxl_mbox_get_supported_logs gsl;
        struct cxl_gsl_entry entry;
@@ -156,6 +172,36 @@ static int mock_set_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
        return 0;
 }
 
+static int mock_health_info(struct cxl_dev_state *cxlds,
+                           struct cxl_mbox_cmd *cmd)
+{
+       struct cxl_mbox_health_info health_info = {
+               /* set flags for maint needed, perf degraded, hw replacement */
+               .health_status = 0x7,
+               /* set media status to "All Data Lost" */
+               .media_status = 0x3,
+               /*
+                * set ext_status flags for:
+                *  ext_life_used: normal,
+                *  ext_temperature: critical,
+                *  ext_corrected_volatile: warning,
+                *  ext_corrected_persistent: normal,
+                */
+               .ext_status = 0x18,
+               .life_used = 15,
+               .temperature = cpu_to_le16(25),
+               .dirty_shutdowns = cpu_to_le32(10),
+               .volatile_errors = cpu_to_le32(20),
+               .pmem_errors = cpu_to_le32(30),
+       };
+
+       if (cmd->size_out < sizeof(health_info))
+               return -EINVAL;
+
+       memcpy(cmd->payload_out, &health_info, sizeof(health_info));
+       return 0;
+}
+
 static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
 {
        struct device *dev = cxlds->dev;
@@ -177,6 +223,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *
        case CXL_MBOX_OP_SET_LSA:
                rc = mock_set_lsa(cxlds, cmd);
                break;
+       case CXL_MBOX_OP_GET_HEALTH_INFO:
+               rc = mock_health_info(cxlds, cmd);
+               break;
        default:
                break;
        }