diff options
| -rw-r--r-- | drivers/cxl/core/edac.c | 49 | ||||
| -rw-r--r-- | drivers/cxl/cxlmem.h | 1 |
2 files changed, 50 insertions, 0 deletions
diff --git a/drivers/cxl/core/edac.c b/drivers/cxl/core/edac.c index da2e7e32150a..a0b045fe3c45 100644 --- a/drivers/cxl/core/edac.c +++ b/drivers/cxl/core/edac.c @@ -813,6 +813,55 @@ static int cxl_memdev_ecs_init(struct cxl_memdev *cxlmd, return 0; } +/* + * Perform Maintenance CXL 3.2 Spec 8.2.10.7.1 + */ + +/* + * Perform Maintenance input payload + * CXL rev 3.2 section 8.2.10.7.1 Table 8-117 + */ +struct cxl_mbox_maintenance_hdr { + u8 op_class; + u8 op_subclass; +} __packed; + +static int cxl_perform_maintenance(struct cxl_mailbox *cxl_mbox, u8 class, + u8 subclass, void *data_in, + size_t data_in_size) +{ + struct cxl_memdev_maintenance_pi { + struct cxl_mbox_maintenance_hdr hdr; + u8 data[]; + } __packed; + struct cxl_mbox_cmd mbox_cmd; + size_t hdr_size; + + struct cxl_memdev_maintenance_pi *pi __free(kvfree) = + kvzalloc(cxl_mbox->payload_size, GFP_KERNEL); + if (!pi) + return -ENOMEM; + + pi->hdr.op_class = class; + pi->hdr.op_subclass = subclass; + hdr_size = sizeof(pi->hdr); + /* + * Check minimum mbox payload size is available for + * the maintenance data transfer. + */ + if (hdr_size + data_in_size > cxl_mbox->payload_size) + return -ENOMEM; + + memcpy(pi->data, data_in, data_in_size); + mbox_cmd = (struct cxl_mbox_cmd){ + .opcode = CXL_MBOX_OP_DO_MAINTENANCE, + .size_in = hdr_size + data_in_size, + .payload_in = pi, + }; + + return cxl_internal_send_cmd(cxl_mbox, &mbox_cmd); +} + int devm_cxl_memdev_edac_register(struct cxl_memdev *cxlmd) { struct edac_dev_feature ras_features[CXL_NR_EDAC_DEV_FEATURES]; diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index 872131009e4c..1d4fe19c554d 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -531,6 +531,7 @@ enum cxl_opcode { CXL_MBOX_OP_GET_SUPPORTED_FEATURES = 0x0500, CXL_MBOX_OP_GET_FEATURE = 0x0501, CXL_MBOX_OP_SET_FEATURE = 0x0502, + CXL_MBOX_OP_DO_MAINTENANCE = 0x0600, CXL_MBOX_OP_IDENTIFY = 0x4000, CXL_MBOX_OP_GET_PARTITION_INFO = 0x4100, CXL_MBOX_OP_SET_PARTITION_INFO = 0x4101, |