Connect the helpers to allow save and restore of GGTT migration data in stop_copy / resume device state. Signed-off-by: Michał Winiarski --- drivers/gpu/drm/xe/xe_gt_sriov_pf_control.c | 13 ++ drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.c | 113 ++++++++++++++++++ drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.h | 3 + 3 files changed, 129 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_control.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_control.c index cb45e97f4c4d9..e7ea9b88fd246 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_control.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_control.c @@ -860,6 +860,16 @@ static int pf_handle_vf_save_data(struct xe_gt *gt, unsigned int vfid) return -EAGAIN; } + if (xe_gt_sriov_pf_migration_save_test(gt, vfid, XE_SRIOV_MIGRATION_DATA_TYPE_GGTT)) { + ret = xe_gt_sriov_pf_migration_ggtt_save(gt, vfid); + if (ret) + return ret; + + xe_gt_sriov_pf_migration_save_clear(gt, vfid, XE_SRIOV_MIGRATION_DATA_TYPE_GGTT); + + return -EAGAIN; + } + return 0; } @@ -1066,6 +1076,9 @@ static int pf_handle_vf_restore_data(struct xe_gt *gt, unsigned int vfid) xe_gt_assert(gt, data); switch (data->type) { + case XE_SRIOV_MIGRATION_DATA_TYPE_GGTT: + ret = xe_gt_sriov_pf_migration_ggtt_restore(gt, vfid, data); + break; case XE_SRIOV_MIGRATION_DATA_TYPE_GUC: ret = xe_gt_sriov_pf_migration_guc_restore(gt, vfid, data); break; diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.c index fbb451767712a..6f2ee5820bdd4 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.c @@ -7,6 +7,9 @@ #include "abi/guc_actions_sriov_abi.h" #include "xe_bo.h" +#include "xe_ggtt.h" +#include "xe_gt.h" +#include "xe_gt_sriov_pf_config.h" #include "xe_gt_sriov_pf_control.h" #include "xe_gt_sriov_pf_helpers.h" #include "xe_gt_sriov_pf_migration.h" @@ -39,6 +42,106 @@ static void pf_dump_mig_data(struct xe_gt *gt, unsigned int vfid, } } +static ssize_t pf_migration_ggtt_size(struct xe_gt *gt, unsigned int vfid) +{ + if (!xe_gt_is_main_type(gt)) + return 0; + + return xe_gt_sriov_pf_config_ggtt_save(gt, vfid, NULL, 0); +} + +static int pf_save_vf_ggtt_mig_data(struct xe_gt *gt, unsigned int vfid) +{ + struct xe_sriov_migration_data *data; + size_t size; + int ret; + + size = pf_migration_ggtt_size(gt, vfid); + xe_gt_assert(gt, size); + + data = xe_sriov_migration_data_alloc(gt_to_xe(gt)); + if (!data) + return -ENOMEM; + + ret = xe_sriov_migration_data_init(data, gt->tile->id, gt->info.id, + XE_SRIOV_MIGRATION_DATA_TYPE_GGTT, 0, size); + if (ret) + goto fail; + + ret = xe_gt_sriov_pf_config_ggtt_save(gt, vfid, data->vaddr, size); + if (ret) + goto fail; + + xe_gt_sriov_dbg_verbose(gt, "VF%u GGTT data save (%zu bytes)\n", vfid, size); + pf_dump_mig_data(gt, vfid, data); + + ret = xe_gt_sriov_pf_migration_save_produce(gt, vfid, data); + if (ret) + goto fail; + + return 0; + +fail: + xe_sriov_migration_data_free(data); + xe_gt_sriov_err(gt, "Failed to save VF%u GGTT data (%pe)\n", vfid, ERR_PTR(ret)); + return ret; +} + +static int pf_restore_vf_ggtt_mig_data(struct xe_gt *gt, unsigned int vfid, + struct xe_sriov_migration_data *data) +{ + int ret; + + xe_gt_sriov_dbg_verbose(gt, "VF%u GGTT data restore (%llu bytes)\n", vfid, data->size); + pf_dump_mig_data(gt, vfid, data); + + ret = xe_gt_sriov_pf_config_ggtt_restore(gt, vfid, data->vaddr, data->size); + if (ret) { + xe_gt_sriov_err(gt, "Failed to restore VF%u GGTT data (%pe)\n", + vfid, ERR_PTR(ret)); + return ret; + } + + return 0; +} + +/** + * xe_gt_sriov_pf_migration_ggtt_save() - Save VF GGTT migration data. + * @gt: the &xe_gt + * @vfid: the VF identifier (can't be 0) + * + * This function is for PF only. + * + * Return: 0 on success or a negative error code on failure. + */ +int xe_gt_sriov_pf_migration_ggtt_save(struct xe_gt *gt, unsigned int vfid) +{ + xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt))); + xe_gt_assert(gt, vfid != PFID); + xe_gt_assert(gt, vfid <= xe_sriov_pf_get_totalvfs(gt_to_xe(gt))); + + return pf_save_vf_ggtt_mig_data(gt, vfid); +} + +/** + * xe_gt_sriov_pf_migration_ggtt_restore() - Restore VF GGTT migration data. + * @gt: the &xe_gt + * @vfid: the VF identifier (can't be 0) + * + * This function is for PF only. + * + * Return: 0 on success or a negative error code on failure. + */ +int xe_gt_sriov_pf_migration_ggtt_restore(struct xe_gt *gt, unsigned int vfid, + struct xe_sriov_migration_data *data) +{ + xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt))); + xe_gt_assert(gt, vfid != PFID); + xe_gt_assert(gt, vfid <= xe_sriov_pf_get_totalvfs(gt_to_xe(gt))); + + return pf_restore_vf_ggtt_mig_data(gt, vfid, data); +} + /* Return: number of dwords saved/restored/required or a negative error code on failure */ static int guc_action_vf_save_restore(struct xe_guc *guc, u32 vfid, u32 opcode, u64 addr, u32 ndwords) @@ -279,6 +382,13 @@ ssize_t xe_gt_sriov_pf_migration_size(struct xe_gt *gt, unsigned int vfid) size += sizeof(struct xe_sriov_pf_migration_hdr); total += size; + size = pf_migration_ggtt_size(gt, vfid); + if (size < 0) + return size; + if (size > 0) + size += sizeof(struct xe_sriov_pf_migration_hdr); + total += size; + return total; } @@ -340,6 +450,9 @@ void xe_gt_sriov_pf_migration_save_init(struct xe_gt *gt, unsigned int vfid) xe_gt_assert(gt, pf_migration_guc_size(gt, vfid) > 0); set_bit(XE_SRIOV_MIGRATION_DATA_TYPE_GUC, &migration->save.data_remaining); + + if (pf_migration_ggtt_size(gt, vfid) > 0) + set_bit(XE_SRIOV_MIGRATION_DATA_TYPE_GGTT, &migration->save.data_remaining); } /** diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.h b/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.h index 66a45d6234245..bc201d8f3147a 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.h +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.h @@ -19,6 +19,9 @@ int xe_gt_sriov_pf_migration_init(struct xe_gt *gt); int xe_gt_sriov_pf_migration_guc_save(struct xe_gt *gt, unsigned int vfid); int xe_gt_sriov_pf_migration_guc_restore(struct xe_gt *gt, unsigned int vfid, struct xe_sriov_migration_data *data); +int xe_gt_sriov_pf_migration_ggtt_save(struct xe_gt *gt, unsigned int vfid); +int xe_gt_sriov_pf_migration_ggtt_restore(struct xe_gt *gt, unsigned int vfid, + struct xe_sriov_migration_data *data); ssize_t xe_gt_sriov_pf_migration_size(struct xe_gt *gt, unsigned int vfid); -- 2.50.1