| Message ID | 20240215110146.1444-4-shiju.jose@huawei.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | hw/cxl/cxl-mailbox-utils: Add feature commands, device patrol scrub control and DDR5 ECS control features | expand |
On Thu, Feb 15, 2024 at 07:01:46PM +0800, shiju.jose@huawei.com wrote: > 500006.china.huawei.com (7.191.161.198) > Status: O > Content-Length: 7949 > Lines: 181 > > From: Shiju Jose <shiju.jose@huawei.com> > > CXL spec 3.1 section 8.2.9.9.11.2 describes the DDR5 Error Check Scrub (ECS) > control feature. > > The Error Check Scrub (ECS) is a feature defined in JEDEC DDR5 SDRAM > Specification (JESD79-5) and allows the DRAM to internally read, correct > single-bit errors, and write back corrected data bits to the DRAM array > while providing transparency to error counts. The ECS control feature > allows the request to configure ECS input configurations during system > boot or at run-time. > > The ECS control allows the requester to change the log entry type, the ECS > threshold count provided that the request is within the definition > specified in DDR5 mode registers, change mode between codeword mode and > row count mode, and reset the ECS counter. > > Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> > Signed-off-by: Shiju Jose <shiju.jose@huawei.com> Reviewed-by: Fan Ni <fan.ni@samsung.com> > --- > hw/cxl/cxl-mailbox-utils.c | 100 ++++++++++++++++++++++++++++++++++++- > 1 file changed, 99 insertions(+), 1 deletion(-) > > diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c > index 9557c38dd9..a14eee9ff5 100644 > --- a/hw/cxl/cxl-mailbox-utils.c > +++ b/hw/cxl/cxl-mailbox-utils.c > @@ -998,6 +998,7 @@ typedef struct CXLSupportedFeatureEntry { > > enum CXL_SUPPORTED_FEATURES_LIST { > CXL_FEATURE_PATROL_SCRUB = 0, > + CXL_FEATURE_DDR5_ECS, > CXL_FEATURE_MAX > }; > > @@ -1069,6 +1070,42 @@ typedef struct CXLMemPatrolScrubSetFeature { > CXLMemPatrolScrubWriteAttrbs feat_data; > } QEMU_PACKED QEMU_ALIGNED(16) CXLMemPatrolScrubSetFeature; > > +/* > + * CXL r3.1 section 8.2.9.9.11.2: > + * DDR5 Error Check Scrub (ECS) Control Feature > + */ > +static const QemuUUID ddr5_ecs_uuid = { > + .data = UUID(0xe5b13f22, 0x2328, 0x4a14, 0xb8, 0xba, > + 0xb9, 0x69, 0x1e, 0x89, 0x33, 0x86) > +}; > + > +#define CXL_DDR5_ECS_GET_FEATURE_VERSION 0x01 > +#define CXL_DDR5_ECS_SET_FEATURE_VERSION 0x01 > +#define CXL_DDR5_ECS_LOG_ENTRY_TYPE_DEFAULT 0x01 > +#define CXL_DDR5_ECS_REALTIME_REPORT_CAP_DEFAULT 1 > +#define CXL_DDR5_ECS_THRESHOLD_COUNT_DEFAULT 3 /* 3: 256, 4: 1024, 5: 4096 */ > +#define CXL_DDR5_ECS_MODE_DEFAULT 0 > + > +#define CXL_DDR5_ECS_NUM_MEDIA_FRUS 3 > + > +/* CXL memdev DDR5 ECS control attributes */ > +struct CXLMemECSReadAttrbs { > + uint8_t ecs_log_cap; > + uint8_t ecs_cap; > + uint16_t ecs_config; > + uint8_t ecs_flags; > +} QEMU_PACKED cxl_ddr5_ecs_feat_read_attrbs[CXL_DDR5_ECS_NUM_MEDIA_FRUS]; > + > +typedef struct CXLDDR5ECSWriteAttrbs { > + uint8_t ecs_log_cap; > + uint16_t ecs_config; > +} QEMU_PACKED CXLDDR5ECSWriteAttrbs; > + > +typedef struct CXLDDR5ECSSetFeature { > + CXLSetFeatureInHeader hdr; > + CXLDDR5ECSWriteAttrbs feat_data[]; > +} QEMU_PACKED QEMU_ALIGNED(16) CXLDDR5ECSSetFeature; > + > /* CXL r3.1 section 8.2.9.6.1: Get Supported Features (Opcode 0500h) */ > static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, > uint8_t *payload_in, > @@ -1087,7 +1124,7 @@ static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, > CXLSupportedFeatureHeader hdr; > CXLSupportedFeatureEntry feat_entries[]; > } QEMU_PACKED QEMU_ALIGNED(16) * get_feats_out = (void *)payload_out; > - uint16_t index; > + uint16_t count, index; > uint16_t entry, req_entries; > uint16_t feat_entries = 0; > > @@ -1129,6 +1166,35 @@ static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, > cxl_memdev_ps_feat_read_attrbs.scrub_flags = > CXL_MEMDEV_PS_ENABLE_DEFAULT; > break; > + case CXL_FEATURE_DDR5_ECS: > + /* Fill supported feature entry for device DDR5 ECS control */ > + get_feats_out->feat_entries[entry] = > + (struct CXLSupportedFeatureEntry) { > + .uuid = ddr5_ecs_uuid, > + .feat_index = index, > + .get_feat_size = CXL_DDR5_ECS_NUM_MEDIA_FRUS * > + sizeof(struct CXLMemECSReadAttrbs), > + .set_feat_size = CXL_DDR5_ECS_NUM_MEDIA_FRUS * > + sizeof(CXLDDR5ECSWriteAttrbs), > + .attrb_flags = 0x1, > + .get_feat_version = CXL_DDR5_ECS_GET_FEATURE_VERSION, > + .set_feat_version = CXL_DDR5_ECS_SET_FEATURE_VERSION, > + .set_feat_effects = 0, > + }; > + feat_entries++; > + /* Set default value for DDR5 ECS read attributes */ > + for (count = 0; count < CXL_DDR5_ECS_NUM_MEDIA_FRUS; count++) { > + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_log_cap = > + CXL_DDR5_ECS_LOG_ENTRY_TYPE_DEFAULT; > + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_cap = > + CXL_DDR5_ECS_REALTIME_REPORT_CAP_DEFAULT; > + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_config = > + CXL_DDR5_ECS_THRESHOLD_COUNT_DEFAULT | > + (CXL_DDR5_ECS_MODE_DEFAULT << 3); > + /* Reserved */ > + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_flags = 0; > + } > + break; > default: > break; > } > @@ -1180,6 +1246,19 @@ static CXLRetCode cmd_features_get_feature(const struct cxl_cmd *cmd, > memcpy(payload_out, > &cxl_memdev_ps_feat_read_attrbs + get_feature->offset, > bytes_to_copy); > + } else if (qemu_uuid_is_equal(&get_feature->uuid, &ddr5_ecs_uuid)) { > + if (get_feature->offset >= CXL_DDR5_ECS_NUM_MEDIA_FRUS * > + sizeof(struct CXLMemECSReadAttrbs)) { > + return CXL_MBOX_INVALID_INPUT; > + } > + bytes_to_copy = CXL_DDR5_ECS_NUM_MEDIA_FRUS * > + sizeof(struct CXLMemECSReadAttrbs) - > + get_feature->offset; > + bytes_to_copy = (bytes_to_copy > get_feature->count) ? > + get_feature->count : bytes_to_copy; > + memcpy(payload_out, > + &cxl_ddr5_ecs_feat_read_attrbs + get_feature->offset, > + bytes_to_copy); > } else { > return CXL_MBOX_UNSUPPORTED; > } > @@ -1197,8 +1276,11 @@ static CXLRetCode cmd_features_set_feature(const struct cxl_cmd *cmd, > size_t *len_out, > CXLCCI *cci) > { > + uint16_t count; > CXLMemPatrolScrubWriteAttrbs *ps_write_attrbs; > + CXLDDR5ECSWriteAttrbs *ecs_write_attrbs; > CXLMemPatrolScrubSetFeature *ps_set_feature; > + CXLDDR5ECSSetFeature *ecs_set_feature; > CXLSetFeatureInHeader *hdr = (void *)payload_in; > > if (qemu_uuid_is_equal(&hdr->uuid, &patrol_scrub_uuid)) { > @@ -1216,6 +1298,22 @@ static CXLRetCode cmd_features_set_feature(const struct cxl_cmd *cmd, > cxl_memdev_ps_feat_read_attrbs.scrub_flags &= ~0x1; > cxl_memdev_ps_feat_read_attrbs.scrub_flags |= > ps_write_attrbs->scrub_flags & 0x1; > + } else if (qemu_uuid_is_equal(&hdr->uuid, > + &ddr5_ecs_uuid)) { > + if (hdr->version != CXL_DDR5_ECS_SET_FEATURE_VERSION || > + (hdr->flags & CXL_SET_FEATURE_FLAG_DATA_TRANSFER_MASK) != > + CXL_SET_FEATURE_FLAG_FULL_DATA_TRANSFER) { > + return CXL_MBOX_UNSUPPORTED; > + } > + > + ecs_set_feature = (void *)payload_in; > + ecs_write_attrbs = ecs_set_feature->feat_data; > + for (count = 0; count < CXL_DDR5_ECS_NUM_MEDIA_FRUS; count++) { > + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_log_cap = > + ecs_write_attrbs[count].ecs_log_cap; > + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_config = > + ecs_write_attrbs[count].ecs_config & 0x1F;
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 9557c38dd9..a14eee9ff5 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -998,6 +998,7 @@ typedef struct CXLSupportedFeatureEntry { enum CXL_SUPPORTED_FEATURES_LIST { CXL_FEATURE_PATROL_SCRUB = 0, + CXL_FEATURE_DDR5_ECS, CXL_FEATURE_MAX }; @@ -1069,6 +1070,42 @@ typedef struct CXLMemPatrolScrubSetFeature { CXLMemPatrolScrubWriteAttrbs feat_data; } QEMU_PACKED QEMU_ALIGNED(16) CXLMemPatrolScrubSetFeature; +/* + * CXL r3.1 section 8.2.9.9.11.2: + * DDR5 Error Check Scrub (ECS) Control Feature + */ +static const QemuUUID ddr5_ecs_uuid = { + .data = UUID(0xe5b13f22, 0x2328, 0x4a14, 0xb8, 0xba, + 0xb9, 0x69, 0x1e, 0x89, 0x33, 0x86) +}; + +#define CXL_DDR5_ECS_GET_FEATURE_VERSION 0x01 +#define CXL_DDR5_ECS_SET_FEATURE_VERSION 0x01 +#define CXL_DDR5_ECS_LOG_ENTRY_TYPE_DEFAULT 0x01 +#define CXL_DDR5_ECS_REALTIME_REPORT_CAP_DEFAULT 1 +#define CXL_DDR5_ECS_THRESHOLD_COUNT_DEFAULT 3 /* 3: 256, 4: 1024, 5: 4096 */ +#define CXL_DDR5_ECS_MODE_DEFAULT 0 + +#define CXL_DDR5_ECS_NUM_MEDIA_FRUS 3 + +/* CXL memdev DDR5 ECS control attributes */ +struct CXLMemECSReadAttrbs { + uint8_t ecs_log_cap; + uint8_t ecs_cap; + uint16_t ecs_config; + uint8_t ecs_flags; +} QEMU_PACKED cxl_ddr5_ecs_feat_read_attrbs[CXL_DDR5_ECS_NUM_MEDIA_FRUS]; + +typedef struct CXLDDR5ECSWriteAttrbs { + uint8_t ecs_log_cap; + uint16_t ecs_config; +} QEMU_PACKED CXLDDR5ECSWriteAttrbs; + +typedef struct CXLDDR5ECSSetFeature { + CXLSetFeatureInHeader hdr; + CXLDDR5ECSWriteAttrbs feat_data[]; +} QEMU_PACKED QEMU_ALIGNED(16) CXLDDR5ECSSetFeature; + /* CXL r3.1 section 8.2.9.6.1: Get Supported Features (Opcode 0500h) */ static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, uint8_t *payload_in, @@ -1087,7 +1124,7 @@ static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, CXLSupportedFeatureHeader hdr; CXLSupportedFeatureEntry feat_entries[]; } QEMU_PACKED QEMU_ALIGNED(16) * get_feats_out = (void *)payload_out; - uint16_t index; + uint16_t count, index; uint16_t entry, req_entries; uint16_t feat_entries = 0; @@ -1129,6 +1166,35 @@ static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, cxl_memdev_ps_feat_read_attrbs.scrub_flags = CXL_MEMDEV_PS_ENABLE_DEFAULT; break; + case CXL_FEATURE_DDR5_ECS: + /* Fill supported feature entry for device DDR5 ECS control */ + get_feats_out->feat_entries[entry] = + (struct CXLSupportedFeatureEntry) { + .uuid = ddr5_ecs_uuid, + .feat_index = index, + .get_feat_size = CXL_DDR5_ECS_NUM_MEDIA_FRUS * + sizeof(struct CXLMemECSReadAttrbs), + .set_feat_size = CXL_DDR5_ECS_NUM_MEDIA_FRUS * + sizeof(CXLDDR5ECSWriteAttrbs), + .attrb_flags = 0x1, + .get_feat_version = CXL_DDR5_ECS_GET_FEATURE_VERSION, + .set_feat_version = CXL_DDR5_ECS_SET_FEATURE_VERSION, + .set_feat_effects = 0, + }; + feat_entries++; + /* Set default value for DDR5 ECS read attributes */ + for (count = 0; count < CXL_DDR5_ECS_NUM_MEDIA_FRUS; count++) { + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_log_cap = + CXL_DDR5_ECS_LOG_ENTRY_TYPE_DEFAULT; + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_cap = + CXL_DDR5_ECS_REALTIME_REPORT_CAP_DEFAULT; + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_config = + CXL_DDR5_ECS_THRESHOLD_COUNT_DEFAULT | + (CXL_DDR5_ECS_MODE_DEFAULT << 3); + /* Reserved */ + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_flags = 0; + } + break; default: break; } @@ -1180,6 +1246,19 @@ static CXLRetCode cmd_features_get_feature(const struct cxl_cmd *cmd, memcpy(payload_out, &cxl_memdev_ps_feat_read_attrbs + get_feature->offset, bytes_to_copy); + } else if (qemu_uuid_is_equal(&get_feature->uuid, &ddr5_ecs_uuid)) { + if (get_feature->offset >= CXL_DDR5_ECS_NUM_MEDIA_FRUS * + sizeof(struct CXLMemECSReadAttrbs)) { + return CXL_MBOX_INVALID_INPUT; + } + bytes_to_copy = CXL_DDR5_ECS_NUM_MEDIA_FRUS * + sizeof(struct CXLMemECSReadAttrbs) - + get_feature->offset; + bytes_to_copy = (bytes_to_copy > get_feature->count) ? + get_feature->count : bytes_to_copy; + memcpy(payload_out, + &cxl_ddr5_ecs_feat_read_attrbs + get_feature->offset, + bytes_to_copy); } else { return CXL_MBOX_UNSUPPORTED; } @@ -1197,8 +1276,11 @@ static CXLRetCode cmd_features_set_feature(const struct cxl_cmd *cmd, size_t *len_out, CXLCCI *cci) { + uint16_t count; CXLMemPatrolScrubWriteAttrbs *ps_write_attrbs; + CXLDDR5ECSWriteAttrbs *ecs_write_attrbs; CXLMemPatrolScrubSetFeature *ps_set_feature; + CXLDDR5ECSSetFeature *ecs_set_feature; CXLSetFeatureInHeader *hdr = (void *)payload_in; if (qemu_uuid_is_equal(&hdr->uuid, &patrol_scrub_uuid)) { @@ -1216,6 +1298,22 @@ static CXLRetCode cmd_features_set_feature(const struct cxl_cmd *cmd, cxl_memdev_ps_feat_read_attrbs.scrub_flags &= ~0x1; cxl_memdev_ps_feat_read_attrbs.scrub_flags |= ps_write_attrbs->scrub_flags & 0x1; + } else if (qemu_uuid_is_equal(&hdr->uuid, + &ddr5_ecs_uuid)) { + if (hdr->version != CXL_DDR5_ECS_SET_FEATURE_VERSION || + (hdr->flags & CXL_SET_FEATURE_FLAG_DATA_TRANSFER_MASK) != + CXL_SET_FEATURE_FLAG_FULL_DATA_TRANSFER) { + return CXL_MBOX_UNSUPPORTED; + } + + ecs_set_feature = (void *)payload_in; + ecs_write_attrbs = ecs_set_feature->feat_data; + for (count = 0; count < CXL_DDR5_ECS_NUM_MEDIA_FRUS; count++) { + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_log_cap = + ecs_write_attrbs[count].ecs_log_cap; + cxl_ddr5_ecs_feat_read_attrbs[count].ecs_config = + ecs_write_attrbs[count].ecs_config & 0x1F; + } } else { return CXL_MBOX_UNSUPPORTED; }