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cxl/test: Add Get Feature support to cxl_test

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Add emulation of Get Feature command to cxl_test. The feature for
device patrol scrub is returned by the emulation code. This is
the only feature currently supported by cxl_test. It returns
the information for the device patrol scrub feature.

Link: https://patch.msgid.link/r/20250307205648.1021626-7-dave.jiang@intel.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Dave Jiang
2025-03-07 13:55:36 -07:00
committed by Jason Gunthorpe
parent eb5dfcb9e3
commit e77e9c1079
1 changed files with 56 additions and 0 deletions
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56
tools/testing/cxl/test/mem.c
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@@ -48,6 +48,10 @@ static struct cxl_cel_entry mock_cel[] = {
.opcode = cpu_to_le16(CXL_MBOX_OP_GET_SUPPORTED_FEATURES),
.effect = CXL_CMD_EFFECT_NONE,
},
{
.opcode = cpu_to_le16(CXL_MBOX_OP_GET_FEATURE),
.effect = CXL_CMD_EFFECT_NONE,
},
{
.opcode = cpu_to_le16(CXL_MBOX_OP_IDENTIFY),
.effect = CXL_CMD_EFFECT_NONE,
@@ -149,6 +153,10 @@ struct mock_event_store {
u32 ev_status;
};
struct vendor_test_feat {
__le32 data;
} __packed;
struct cxl_mockmem_data {
void *lsa;
void *fw;
@@ -165,6 +173,7 @@ struct cxl_mockmem_data {
u8 event_buf[SZ_4K];
u64 timestamp;
unsigned long sanitize_timeout;
struct vendor_test_feat test_feat;
};
static struct mock_event_log *event_find_log(struct device *dev, int log_type)
@@ -1379,6 +1388,44 @@ static void fill_feature_vendor_test(struct cxl_feat_entry *feat)
#define MAX_CXL_TEST_FEATS 1
static int mock_get_test_feature(struct cxl_mockmem_data *mdata,
struct cxl_mbox_cmd *cmd)
{
struct vendor_test_feat *output = cmd->payload_out;
struct cxl_mbox_get_feat_in *input = cmd->payload_in;
u16 offset = le16_to_cpu(input->offset);
u16 count = le16_to_cpu(input->count);
u8 *ptr;
if (offset > sizeof(*output)) {
cmd->return_code = CXL_MBOX_CMD_RC_INPUT;
return -EINVAL;
}
if (offset + count > sizeof(*output)) {
cmd->return_code = CXL_MBOX_CMD_RC_INPUT;
return -EINVAL;
}
ptr = (u8 *)&mdata->test_feat + offset;
memcpy((u8 *)output + offset, ptr, count);
return 0;
}
static int mock_get_feature(struct cxl_mockmem_data *mdata,
struct cxl_mbox_cmd *cmd)
{
struct cxl_mbox_get_feat_in *input = cmd->payload_in;
if (uuid_equal(&input->uuid, &CXL_VENDOR_FEATURE_TEST))
return mock_get_test_feature(mdata, cmd);
cmd->return_code = CXL_MBOX_CMD_RC_UNSUPPORTED;
return -EOPNOTSUPP;
}
static int mock_get_supported_features(struct cxl_mockmem_data *mdata,
struct cxl_mbox_cmd *cmd)
{
@@ -1509,6 +1556,9 @@ static int cxl_mock_mbox_send(struct cxl_mailbox *cxl_mbox,
case CXL_MBOX_OP_GET_SUPPORTED_FEATURES:
rc = mock_get_supported_features(mdata, cmd);
break;
case CXL_MBOX_OP_GET_FEATURE:
rc = mock_get_feature(mdata, cmd);
break;
default:
break;
}
@@ -1556,6 +1606,11 @@ static int cxl_mock_mailbox_create(struct cxl_dev_state *cxlds)
return 0;
}
static void cxl_mock_test_feat_init(struct cxl_mockmem_data *mdata)
{
mdata->test_feat.data = cpu_to_le32(0xdeadbeef);
}
static int cxl_mock_mem_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -1651,6 +1706,7 @@ static int cxl_mock_mem_probe(struct platform_device *pdev)
dev_dbg(dev, "No CXL FWCTL setup\n");
cxl_mem_get_event_records(mds, CXLDEV_EVENT_STATUS_ALL);
cxl_mock_test_feat_init(mdata);
return 0;
}