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: Davidlohr Bueso <d...@stgolabs.net> Reviewed-by: Jonathan Cameron <jonathan.came...@huawei.com> Signed-off-by: Dave Jiang <dave.ji...@intel.com> Link: https://lore.kernel.org/r/166863347508.80269.7206107994577858520.st...@djiang5-desk3.ch.intel.com Signed-off-by: Dan Williams <dan.j.willi...@intel.com> --- tools/testing/cxl/test/mem.c | 44 +++++++++++++++++++++++++++++++++++------- 1 file changed, 37 insertions(+), 7 deletions(-) diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index aa2df3a15051..d67fc04bf0cf 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -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))
