Commit 1fa99be3 authored by Dave Jiang's avatar Dave Jiang Committed by Dan Williams
Browse files

tools/testing/cxl: Add "Get Security State" opcode support 



Add the emulation support for handling "Get Security State" opcode for a
CXL memory device for the cxl_test. The function will copy back device
security state bitmask to the output payload.

The security state data is added as platform_data for the mock mem device.

Reviewed-by: default avatarDavidlohr Bueso <dave@stgolabs.net>
Reviewed-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/166983610177.2734609.4953959949148428755.stgit@djiang5-desk3.ch.intel.com


Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 32828115

tools/testing/cxl/test/mem.c

+37 −7
Original line number Diff line number Diff line
@@ -65,6 +65,11 @@ static struct { 
	},

};



struct cxl_mockmem_data {

	void *lsa;

	u32 security_state;

};



static int mock_gsl(struct cxl_mbox_cmd *cmd)

{

	if (cmd->size_out < sizeof(mock_gsl_payload))
@@ -137,10 +142,27 @@ static int mock_partition_info(struct cxl_dev_state *cxlds, 
	return 0;

}



static int mock_get_security_state(struct cxl_dev_state *cxlds,

				   struct cxl_mbox_cmd *cmd)

{

	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);



	if (cmd->size_in)

		return -EINVAL;



	if (cmd->size_out != sizeof(u32))

		return -EINVAL;



	memcpy(cmd->payload_out, &mdata->security_state, sizeof(u32));



	return 0;

}



static int mock_get_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)

{

	struct cxl_mbox_get_lsa *get_lsa = cmd->payload_in;

	void *lsa = dev_get_drvdata(cxlds->dev);

	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);

	void *lsa = mdata->lsa;

	u32 offset, length;



	if (sizeof(*get_lsa) > cmd->size_in)
@@ -159,7 +181,8 @@ static int mock_get_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) 
static int mock_set_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)

{

	struct cxl_mbox_set_lsa *set_lsa = cmd->payload_in;

	void *lsa = dev_get_drvdata(cxlds->dev);

	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);

	void *lsa = mdata->lsa;

	u32 offset, length;



	if (sizeof(*set_lsa) > cmd->size_in)
@@ -230,6 +253,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd * 
	case CXL_MBOX_OP_GET_HEALTH_INFO:

		rc = mock_health_info(cxlds, cmd);

		break;

	case CXL_MBOX_OP_GET_SECURITY_STATE:

		rc = mock_get_security_state(cxlds, cmd);

		break;

	default:

		break;

	}
@@ -250,16 +276,20 @@ static int cxl_mock_mem_probe(struct platform_device *pdev) 
	struct device *dev = &pdev->dev;

	struct cxl_memdev *cxlmd;

	struct cxl_dev_state *cxlds;

	void *lsa;

	struct cxl_mockmem_data *mdata;

	int rc;



	lsa = vmalloc(LSA_SIZE);

	if (!lsa)

	mdata = devm_kzalloc(dev, sizeof(*mdata), GFP_KERNEL);

	if (!mdata)

		return -ENOMEM;

	dev_set_drvdata(dev, mdata);



	mdata->lsa = vmalloc(LSA_SIZE);

	if (!mdata->lsa)

		return -ENOMEM;

	rc = devm_add_action_or_reset(dev, label_area_release, lsa);

	rc = devm_add_action_or_reset(dev, label_area_release, mdata->lsa);

	if (rc)

		return rc;

	dev_set_drvdata(dev, lsa);



	cxlds = cxl_dev_state_create(dev);

	if (IS_ERR(cxlds))