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authorDan Williams <dan.j.williams@intel.com>2023-10-05 01:50:09 +0200
committerDan Williams <dan.j.williams@intel.com>2023-10-09 20:35:45 +0200
commitcf009d4ec38cb3acc09b4248674c67abe916ceb5 (patch)
tree87ecaefc20303a9b1c71b2384b22b9d85c2eb003 /tools/testing/cxl
parenttools/testing/cxl: Make cxl_memdev_state available to other command emulation (diff)
downloadlinux-cf009d4ec38cb3acc09b4248674c67abe916ceb5.tar.xz
linux-cf009d4ec38cb3acc09b4248674c67abe916ceb5.zip
tools/testing/cxl: Add 'sanitize notifier' support
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>
Diffstat (limited to 'tools/testing/cxl')
-rw-r--r--tools/testing/cxl/test/mem.c68
1 files changed, 67 insertions, 1 deletions
diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
index ab311b59899a..76bdb1ac5816 100644
--- a/tools/testing/cxl/test/mem.c
+++ b/tools/testing/cxl/test/mem.c
@@ -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);