diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c | 78 |
1 files changed, 52 insertions, 26 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c index 03072e094991..086c12ee3d9d 100644 --- a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c +++ b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c @@ -138,6 +138,14 @@ void xe_gt_tlb_invalidation_reset(struct xe_gt *gt) int pending_seqno; /* + * we can get here before the CTs are even initialized if we're wedging + * very early, in which case there are not going to be any pending + * fences so we can bail immediately. + */ + if (!xe_guc_ct_initialized(>->uc.guc.ct)) + return; + + /* * CT channel is already disabled at this point. No new TLB requests can * appear. */ @@ -322,6 +330,47 @@ int xe_gt_tlb_invalidation_ggtt(struct xe_gt *gt) return 0; } +static int send_tlb_invalidation_all(struct xe_gt *gt, + struct xe_gt_tlb_invalidation_fence *fence) +{ + u32 action[] = { + XE_GUC_ACTION_TLB_INVALIDATION_ALL, + 0, /* seqno, replaced in send_tlb_invalidation */ + MAKE_INVAL_OP(XE_GUC_TLB_INVAL_FULL), + }; + + return send_tlb_invalidation(>->uc.guc, fence, action, ARRAY_SIZE(action)); +} + +/** + * xe_gt_tlb_invalidation_all - Invalidate all TLBs across PF and all VFs. + * @gt: the &xe_gt structure + * @fence: the &xe_gt_tlb_invalidation_fence to be signaled on completion + * + * Send a request to invalidate all TLBs across PF and all VFs. + * + * Return: 0 on success, negative error code on error + */ +int xe_gt_tlb_invalidation_all(struct xe_gt *gt, struct xe_gt_tlb_invalidation_fence *fence) +{ + int err; + + xe_gt_assert(gt, gt == fence->gt); + + err = send_tlb_invalidation_all(gt, fence); + if (err) + xe_gt_err(gt, "TLB invalidation request failed (%pe)", ERR_PTR(err)); + + return err; +} + +/* + * Ensure that roundup_pow_of_two(length) doesn't overflow. + * Note that roundup_pow_of_two() operates on unsigned long, + * not on u64. + */ +#define MAX_RANGE_TLB_INVALIDATION_LENGTH (rounddown_pow_of_two(ULONG_MAX)) + /** * xe_gt_tlb_invalidation_range - Issue a TLB invalidation on this GT for an * address range @@ -346,6 +395,7 @@ int xe_gt_tlb_invalidation_range(struct xe_gt *gt, struct xe_device *xe = gt_to_xe(gt); #define MAX_TLB_INVALIDATION_LEN 7 u32 action[MAX_TLB_INVALIDATION_LEN]; + u64 length = end - start; int len = 0; xe_gt_assert(gt, fence); @@ -358,11 +408,11 @@ int xe_gt_tlb_invalidation_range(struct xe_gt *gt, action[len++] = XE_GUC_ACTION_TLB_INVALIDATION; action[len++] = 0; /* seqno, replaced in send_tlb_invalidation */ - if (!xe->info.has_range_tlb_invalidation) { + if (!xe->info.has_range_tlb_invalidation || + length > MAX_RANGE_TLB_INVALIDATION_LENGTH) { action[len++] = MAKE_INVAL_OP(XE_GUC_TLB_INVAL_FULL); } else { u64 orig_start = start; - u64 length = end - start; u64 align; if (length < SZ_4K) @@ -433,30 +483,6 @@ void xe_gt_tlb_invalidation_vm(struct xe_gt *gt, struct xe_vm *vm) } /** - * xe_gt_tlb_invalidation_vma - Issue a TLB invalidation on this GT for a VMA - * @gt: GT structure - * @fence: invalidation fence which will be signal on TLB invalidation - * completion, can be NULL - * @vma: VMA to invalidate - * - * Issue a range based TLB invalidation if supported, if not fallback to a full - * TLB invalidation. Completion of TLB is asynchronous and caller can use - * the invalidation fence to wait for completion. - * - * Return: Negative error code on error, 0 on success - */ -int xe_gt_tlb_invalidation_vma(struct xe_gt *gt, - struct xe_gt_tlb_invalidation_fence *fence, - struct xe_vma *vma) -{ - xe_gt_assert(gt, vma); - - return xe_gt_tlb_invalidation_range(gt, fence, xe_vma_start(vma), - xe_vma_end(vma), - xe_vma_vm(vma)->usm.asid); -} - -/** * xe_guc_tlb_invalidation_done_handler - TLB invalidation done handler * @guc: guc * @msg: message indicating TLB invalidation done |