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tools/testing/cxl: Add 'sanitize notifier' support

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Allow for cxl_test regression of the sanitize notifier. Reuse the core
setup infrastructure, and trigger notifications upon any sanitize
submission with a programmable notification delay.

Cc: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2023-10-04 16:50:09 -07:00
parent 501b3d9fb0
commit cf009d4ec3
1 changed files with 67 additions and 1 deletions
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68
tools/testing/cxl/test/mem.c
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@ -89,6 +89,12 @@ static struct cxl_cel_entry mock_cel[] = {
.effect = cpu_to_le16(EFFECT(CONF_CHANGE_COLD_RESET) |
EFFECT(CONF_CHANGE_IMMEDIATE)),
},
{
.opcode = cpu_to_le16(CXL_MBOX_OP_SANITIZE),
.effect = cpu_to_le16(EFFECT(DATA_CHANGE_IMMEDIATE) |
EFFECT(SECURITY_CHANGE_IMMEDIATE) |
EFFECT(BACKGROUND_OP)),
},
};
/* See CXL 2.0 Table 181 Get Health Info Output Payload */
@ -152,6 +158,7 @@ struct cxl_mockmem_data {
struct cxl_memdev_state *mds;
u8 event_buf[SZ_4K];
u64 timestamp;
unsigned long sanitize_timeout;
};
static struct mock_event_log *event_find_log(struct device *dev, int log_type)
@ -567,9 +574,26 @@ static int mock_partition_info(struct cxl_mbox_cmd *cmd)
return 0;
}
void cxl_mockmem_sanitize_work(struct work_struct *work)
{
struct cxl_memdev_state *mds =
container_of(work, typeof(*mds), security.poll_dwork.work);
mutex_lock(&mds->mbox_mutex);
if (mds->security.sanitize_node)
sysfs_notify_dirent(mds->security.sanitize_node);
mds->security.sanitize_active = false;
mutex_unlock(&mds->mbox_mutex);
dev_dbg(mds->cxlds.dev, "sanitize complete\n");
}
static int mock_sanitize(struct cxl_mockmem_data *mdata,
struct cxl_mbox_cmd *cmd)
{
struct cxl_memdev_state *mds = mdata->mds;
int rc = 0;
if (cmd->size_in != 0)
return -EINVAL;
@ -585,7 +609,16 @@ static int mock_sanitize(struct cxl_mockmem_data *mdata,
return -ENXIO;
}
return 0; /* assume less than 2 secs, no bg */
mutex_lock(&mds->mbox_mutex);
if (schedule_delayed_work(&mds->security.poll_dwork,
msecs_to_jiffies(mdata->sanitize_timeout))) {
mds->security.sanitize_active = true;
dev_dbg(mds->cxlds.dev, "sanitize issued\n");
} else
rc = -EBUSY;
mutex_unlock(&mds->mbox_mutex);
return rc;
}
static int mock_secure_erase(struct cxl_mockmem_data *mdata,
@ -1419,6 +1452,7 @@ static int cxl_mock_mem_probe(struct platform_device *pdev)
mds->mbox_send = cxl_mock_mbox_send;
mds->payload_size = SZ_4K;
mds->event.buf = (struct cxl_get_event_payload *) mdata->event_buf;
INIT_DELAYED_WORK(&mds->security.poll_dwork, cxl_mockmem_sanitize_work);
cxlds = &mds->cxlds;
cxlds->serial = pdev->id;
@ -1458,6 +1492,10 @@ static int cxl_mock_mem_probe(struct platform_device *pdev)
if (rc)
return rc;
rc = devm_cxl_sanitize_setup_notifier(&pdev->dev, cxlmd);
if (rc)
return rc;
cxl_mem_get_event_records(mds, CXLDEV_EVENT_STATUS_ALL);
return 0;
@ -1526,10 +1564,38 @@ static ssize_t fw_buf_checksum_show(struct device *dev,
static DEVICE_ATTR_RO(fw_buf_checksum);
static ssize_t sanitize_timeout_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cxl_mockmem_data *mdata = dev_get_drvdata(dev);
return sysfs_emit(buf, "%lu\n", mdata->sanitize_timeout);
}
static ssize_t sanitize_timeout_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cxl_mockmem_data *mdata = dev_get_drvdata(dev);
unsigned long val;
int rc;
rc = kstrtoul(buf, 0, &val);
if (rc)
return rc;
mdata->sanitize_timeout = val;
return count;
}
static DEVICE_ATTR_RW(sanitize_timeout);
static struct attribute *cxl_mock_mem_attrs[] = {
&dev_attr_security_lock.attr,
&dev_attr_event_trigger.attr,
&dev_attr_fw_buf_checksum.attr,
&dev_attr_sanitize_timeout.attr,
NULL
};
ATTRIBUTE_GROUPS(cxl_mock_mem);