diff options
| -rw-r--r-- | hw/cxl/cxl-mailbox-utils.c | 79 | ||||
| -rw-r--r-- | hw/mem/cxl_type3.c | 9 | ||||
| -rw-r--r-- | include/hw/cxl/cxl_device.h | 24 |
3 files changed, 107 insertions, 5 deletions
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 7b7d8e5eae..485beb9dba 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -824,6 +824,7 @@ typedef struct CXLSupportedFeatureEntry { #define CXL_FEAT_ENTRY_SFE_CONFIG_CHANGE_CXL_RESET BIT(11) enum CXL_SUPPORTED_FEATURES_LIST { + CXL_FEATURE_PATROL_SCRUB = 0, CXL_FEATURE_MAX }; @@ -865,6 +866,17 @@ enum CXL_SET_FEATURE_FLAG_DATA_TRANSFER { }; #define CXL_SET_FEAT_DATA_SAVED_ACROSS_RESET BIT(3) +/* CXL r3.1 section 8.2.9.9.11.1: Device Patrol Scrub Control Feature */ +static const QemuUUID patrol_scrub_uuid = { + .data = UUID(0x96dad7d6, 0xfde8, 0x482b, 0xa7, 0x33, + 0x75, 0x77, 0x4e, 0x06, 0xdb, 0x8a) +}; + +typedef struct CXLMemPatrolScrubSetFeature { + CXLSetFeatureInHeader hdr; + CXLMemPatrolScrubWriteAttrs feat_data; +} QEMU_PACKED QEMU_ALIGNED(16) CXLMemPatrolScrubSetFeature; + /* 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, @@ -890,11 +902,7 @@ static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, return CXL_MBOX_UNSUPPORTED; } if (get_feats_in->count < sizeof(CXLSupportedFeatureHeader) || - /* - * Temporary: suppress compiler error due to unsigned - * comparioson to zero. - */ - true /*get_feats_in->start_index >= CXL_FEATURE_MAX*/) { + get_feats_in->start_index >= CXL_FEATURE_MAX) { return CXL_MBOX_INVALID_INPUT; } @@ -907,6 +915,21 @@ static CXLRetCode cmd_features_get_supported(const struct cxl_cmd *cmd, for (entry = 0, index = get_feats_in->start_index; entry < req_entries; index++) { switch (index) { + case CXL_FEATURE_PATROL_SCRUB: + /* Fill supported feature entry for device patrol scrub control */ + get_feats_out->feat_entries[entry++] = + (struct CXLSupportedFeatureEntry) { + .uuid = patrol_scrub_uuid, + .feat_index = index, + .get_feat_size = sizeof(CXLMemPatrolScrubReadAttrs), + .set_feat_size = sizeof(CXLMemPatrolScrubWriteAttrs), + .attr_flags = CXL_FEAT_ENTRY_ATTR_FLAG_CHANGABLE, + .get_feat_version = CXL_MEMDEV_PS_GET_FEATURE_VERSION, + .set_feat_version = CXL_MEMDEV_PS_SET_FEATURE_VERSION, + .set_feat_effects = CXL_FEAT_ENTRY_SFE_IMMEDIATE_CONFIG_CHANGE | + CXL_FEAT_ENTRY_SFE_CEL_VALID, + }; + break; default: __builtin_unreachable(); } @@ -956,6 +979,20 @@ static CXLRetCode cmd_features_get_feature(const struct cxl_cmd *cmd, return CXL_MBOX_INVALID_INPUT; } + if (qemu_uuid_is_equal(&get_feature->uuid, &patrol_scrub_uuid)) { + if (get_feature->offset >= sizeof(CXLMemPatrolScrubReadAttrs)) { + return CXL_MBOX_INVALID_INPUT; + } + bytes_to_copy = sizeof(CXLMemPatrolScrubReadAttrs) - + get_feature->offset; + bytes_to_copy = MIN(bytes_to_copy, get_feature->count); + memcpy(payload_out, + (uint8_t *)&ct3d->patrol_scrub_attrs + get_feature->offset, + bytes_to_copy); + } else { + return CXL_MBOX_UNSUPPORTED; + } + *len_out = bytes_to_copy; return CXL_MBOX_SUCCESS; @@ -970,7 +1007,10 @@ static CXLRetCode cmd_features_set_feature(const struct cxl_cmd *cmd, CXLCCI *cci) { CXLSetFeatureInHeader *hdr = (void *)payload_in; + CXLMemPatrolScrubWriteAttrs *ps_write_attrs; + CXLMemPatrolScrubSetFeature *ps_set_feature; CXLSetFeatureInfo *set_feat_info; + uint16_t bytes_to_copy = 0; uint8_t data_transfer_flag; CXLType3Dev *ct3d; @@ -999,11 +1039,40 @@ static CXLRetCode cmd_features_set_feature(const struct cxl_cmd *cmd, } set_feat_info->data_transfer_flag = data_transfer_flag; set_feat_info->data_offset = hdr->offset; + bytes_to_copy = len_in - sizeof(CXLSetFeatureInHeader); + + if (qemu_uuid_is_equal(&hdr->uuid, &patrol_scrub_uuid)) { + if (hdr->version != CXL_MEMDEV_PS_SET_FEATURE_VERSION) { + return CXL_MBOX_UNSUPPORTED; + } + + ps_set_feature = (void *)payload_in; + ps_write_attrs = &ps_set_feature->feat_data; + memcpy((uint8_t *)&ct3d->patrol_scrub_wr_attrs + hdr->offset, + ps_write_attrs, + bytes_to_copy); + set_feat_info->data_size += bytes_to_copy; + + if (data_transfer_flag == CXL_SET_FEATURE_FLAG_FULL_DATA_TRANSFER || + data_transfer_flag == CXL_SET_FEATURE_FLAG_FINISH_DATA_TRANSFER) { + ct3d->patrol_scrub_attrs.scrub_cycle &= ~0xFF; + ct3d->patrol_scrub_attrs.scrub_cycle |= + ct3d->patrol_scrub_wr_attrs.scrub_cycle_hr & 0xFF; + ct3d->patrol_scrub_attrs.scrub_flags &= ~0x1; + ct3d->patrol_scrub_attrs.scrub_flags |= + ct3d->patrol_scrub_wr_attrs.scrub_flags & 0x1; + } + } else { + return CXL_MBOX_UNSUPPORTED; + } if (data_transfer_flag == CXL_SET_FEATURE_FLAG_FULL_DATA_TRANSFER || data_transfer_flag == CXL_SET_FEATURE_FLAG_FINISH_DATA_TRANSFER || data_transfer_flag == CXL_SET_FEATURE_FLAG_ABORT_DATA_TRANSFER) { memset(&set_feat_info->uuid, 0, sizeof(QemuUUID)); + if (qemu_uuid_is_equal(&hdr->uuid, &patrol_scrub_uuid)) { + memset(&ct3d->patrol_scrub_wr_attrs, 0, set_feat_info->data_size); + } set_feat_info->data_transfer_flag = 0; set_feat_info->data_saved_across_reset = false; set_feat_info->data_offset = 0; diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index c7910687ae..7c583d80f5 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -908,6 +908,15 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp) } cxl_event_init(&ct3d->cxl_dstate, 2); + /* Set default value for patrol scrub attributes */ + ct3d->patrol_scrub_attrs.scrub_cycle_cap = + CXL_MEMDEV_PS_SCRUB_CYCLE_CHANGE_CAP_DEFAULT | + CXL_MEMDEV_PS_SCRUB_REALTIME_REPORT_CAP_DEFAULT; + ct3d->patrol_scrub_attrs.scrub_cycle = + CXL_MEMDEV_PS_CUR_SCRUB_CYCLE_DEFAULT | + (CXL_MEMDEV_PS_MIN_SCRUB_CYCLE_DEFAULT << 8); + ct3d->patrol_scrub_attrs.scrub_flags = CXL_MEMDEV_PS_ENABLE_DEFAULT; + return; err_release_cdat: diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h index 48ed0d9240..2c1df25453 100644 --- a/include/hw/cxl/cxl_device.h +++ b/include/hw/cxl/cxl_device.h @@ -427,6 +427,26 @@ typedef struct CXLPoison { typedef QLIST_HEAD(, CXLPoison) CXLPoisonList; #define CXL_POISON_LIST_LIMIT 256 +/* CXL memory device patrol scrub control attributes */ +typedef struct CXLMemPatrolScrubReadAttrs { + uint8_t scrub_cycle_cap; + uint16_t scrub_cycle; + uint8_t scrub_flags; +} QEMU_PACKED CXLMemPatrolScrubReadAttrs; + +typedef struct CXLMemPatrolScrubWriteAttrs { + uint8_t scrub_cycle_hr; + uint8_t scrub_flags; +} QEMU_PACKED CXLMemPatrolScrubWriteAttrs; + +#define CXL_MEMDEV_PS_GET_FEATURE_VERSION 0x01 +#define CXL_MEMDEV_PS_SET_FEATURE_VERSION 0x01 +#define CXL_MEMDEV_PS_SCRUB_CYCLE_CHANGE_CAP_DEFAULT BIT(0) +#define CXL_MEMDEV_PS_SCRUB_REALTIME_REPORT_CAP_DEFAULT BIT(1) +#define CXL_MEMDEV_PS_CUR_SCRUB_CYCLE_DEFAULT 12 +#define CXL_MEMDEV_PS_MIN_SCRUB_CYCLE_DEFAULT 1 +#define CXL_MEMDEV_PS_ENABLE_DEFAULT 0 + #define DCD_MAX_NUM_REGION 8 typedef struct CXLDCExtentRaw { @@ -511,6 +531,10 @@ struct CXLType3Dev { CXLSetFeatureInfo set_feat_info; + /* Patrol scrub control attributes */ + CXLMemPatrolScrubReadAttrs patrol_scrub_attrs; + CXLMemPatrolScrubWriteAttrs patrol_scrub_wr_attrs; + struct dynamic_capacity { HostMemoryBackend *host_dc; AddressSpace host_dc_as; |