From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0904BD2D0E5 for ; Tue, 13 Jan 2026 12:18:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C08CD10E4BA; Tue, 13 Jan 2026 12:18:14 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=lankhorst.se header.i=@lankhorst.se header.b="C0j6v+x7"; dkim-atps=neutral Received: from lankhorst.se (lankhorst.se [141.105.120.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5332B10E33C for ; Tue, 13 Jan 2026 12:18:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lankhorst.se; s=default; t=1768306693; bh=fE5i2ov2llb2F0bC/DsBMmzyUio/d2jUaxSIst0m2cI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C0j6v+x7RLK3hdPcbwIL8NhrK6YgKOq9xVwt8t51/6vUIcpwk81TpNNXX6lA07pq7 2ezwSVQlirRrMCec/JRulMovZBPPVh87k9gdUuOSuo+9bEYsliP1QPbeZ09YjA1eLL ytiRNoFkhcUyQWT0eMTMa61AdnMB3L3ksexVlAA1aUMxyDFWqWBm34qj3ooU1e8lLR iuE41m8+g6Jo+j1Iq71JW6Ru7k1eojw2+Ckihu2rYiRvKc5PpSeMrEcDJPkRmv9XbT 1iGp1o1ti4nnp0SuMGzu0byovdBpLoiaqp/Bx2vEk2lIVtAWsqQbXbxz2DDeRGIZ2Q tiyJnbIJBMiFA== From: Maarten Lankhorst To: intel-xe@lists.freedesktop.org Cc: Maarten Lankhorst Subject: [PATCH v4 1/5] drm/xe: Make xe_ggtt_node offset relative to starting offset Date: Tue, 13 Jan 2026 13:18:03 +0100 Message-ID: <20260113121807.1303124-2-dev@lankhorst.se> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260113121807.1303124-1-dev@lankhorst.se> References: <20260113121807.1303124-1-dev@lankhorst.se> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Fix all functions that use node->start to use xe_ggtt_node_addr, and add ggtt->start to node->start. This will make node shifting for SRIOV-VF a one-liner, instead of manually changing each GGTT node's base address. Signed-off-by: Maarten Lankhorst --- drivers/gpu/drm/xe/xe_ggtt.c | 58 ++++++++++++++++++++++-------------- 1 file changed, 36 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_ggtt.c b/drivers/gpu/drm/xe/xe_ggtt.c index cb23d97845a86..4bdd2c94021cd 100644 --- a/drivers/gpu/drm/xe/xe_ggtt.c +++ b/drivers/gpu/drm/xe/xe_ggtt.c @@ -300,7 +300,7 @@ static void __xe_ggtt_init_early(struct xe_ggtt *ggtt, u64 start, u64 size) { ggtt->start = start; ggtt->size = size; - drm_mm_init(&ggtt->mm, start, size); + drm_mm_init(&ggtt->mm, 0, size); } int xe_ggtt_init_kunit(struct xe_ggtt *ggtt, u32 start, u32 size) @@ -402,7 +402,7 @@ static void xe_ggtt_initial_clear(struct xe_ggtt *ggtt) /* Display may have allocated inside ggtt, so be careful with clearing here */ mutex_lock(&ggtt->lock); drm_mm_for_each_hole(hole, &ggtt->mm, start, end) - xe_ggtt_clear(ggtt, start, end - start); + xe_ggtt_clear(ggtt, ggtt->start + start, end - start); xe_ggtt_invalidate(ggtt); mutex_unlock(&ggtt->lock); @@ -419,7 +419,7 @@ static void ggtt_node_remove(struct xe_ggtt_node *node) mutex_lock(&ggtt->lock); if (bound) - xe_ggtt_clear(ggtt, node->base.start, node->base.size); + xe_ggtt_clear(ggtt, xe_ggtt_node_addr(node), node->base.size); drm_mm_remove_node(&node->base); node->base.size = 0; mutex_unlock(&ggtt->lock); @@ -574,13 +574,13 @@ int xe_ggtt_node_insert_balloon_locked(struct xe_ggtt_node *node, u64 start, u64 lockdep_assert_held(&ggtt->lock); node->base.color = 0; - node->base.start = start; + node->base.start = start - ggtt->start; node->base.size = end - start; err = drm_mm_reserve_node(&ggtt->mm, &node->base); if (xe_tile_WARN(ggtt->tile, err, "Failed to balloon GGTT %#llx-%#llx (%pe)\n", - node->base.start, node->base.start + node->base.size, ERR_PTR(err))) + xe_ggtt_node_addr(node), xe_ggtt_node_addr(node) + node->base.size, ERR_PTR(err))) return err; xe_ggtt_dump_node(ggtt, &node->base, "balloon"); @@ -771,7 +771,7 @@ static void xe_ggtt_map_bo(struct xe_ggtt *ggtt, struct xe_ggtt_node *node, if (XE_WARN_ON(!node)) return; - start = node->base.start; + start = xe_ggtt_node_addr(node); end = start + xe_bo_size(bo); if (!xe_bo_is_vram(bo) && !xe_bo_is_stolen(bo)) { @@ -892,6 +892,17 @@ static int __xe_ggtt_insert_bo_at(struct xe_ggtt *ggtt, struct xe_bo *bo, } mutex_lock(&ggtt->lock); + /* + * all cases where start < ggtt_start when 0 is passed as argument are + * set to 0, as negative offsets are invalid. + */ + if (start < ggtt->start) + start = 0; + else + start -= ggtt->start; + + end -= ggtt->start; + err = drm_mm_insert_node_in_range(&ggtt->mm, &bo->ggtt_node[tile_id]->base, xe_bo_size(bo), alignment, 0, start, end, 0); if (err) { @@ -1003,16 +1014,17 @@ static u64 xe_encode_vfid_pte(u16 vfid) return FIELD_PREP(GGTT_PTE_VFID, vfid) | XE_PAGE_PRESENT; } -static void xe_ggtt_assign_locked(struct xe_ggtt *ggtt, const struct drm_mm_node *node, u16 vfid) +static void xe_ggtt_assign_locked(const struct xe_ggtt_node *node, u16 vfid) { - u64 start = node->start; - u64 size = node->size; + struct xe_ggtt *ggtt = node->ggtt; + u64 start = xe_ggtt_node_addr(node); + u64 size = xe_ggtt_node_size(node); u64 end = start + size - 1; u64 pte = xe_encode_vfid_pte(vfid); lockdep_assert_held(&ggtt->lock); - if (!drm_mm_node_allocated(node)) + if (!xe_ggtt_node_allocated(node)) return; while (start < end) { @@ -1034,9 +1046,11 @@ static void xe_ggtt_assign_locked(struct xe_ggtt *ggtt, const struct drm_mm_node */ void xe_ggtt_assign(const struct xe_ggtt_node *node, u16 vfid) { - mutex_lock(&node->ggtt->lock); - xe_ggtt_assign_locked(node->ggtt, &node->base, vfid); - mutex_unlock(&node->ggtt->lock); + if (!node) + return; + + guard(mutex)(&node->ggtt->lock); + xe_ggtt_assign_locked(node, vfid); } /** @@ -1058,14 +1072,14 @@ int xe_ggtt_node_save(struct xe_ggtt_node *node, void *dst, size_t size, u16 vfi if (!node) return -ENOENT; - guard(mutex)(&node->ggtt->lock); + ggtt = node->ggtt; + guard(mutex)(&ggtt->lock); if (xe_ggtt_node_pt_size(node) != size) return -EINVAL; - ggtt = node->ggtt; - start = node->base.start; - end = start + node->base.size - 1; + start = xe_ggtt_node_addr(node); + end = start + xe_ggtt_node_size(node) - 1; while (start < end) { pte = ggtt->pt_ops->ggtt_get_pte(ggtt, start); @@ -1098,14 +1112,14 @@ int xe_ggtt_node_load(struct xe_ggtt_node *node, const void *src, size_t size, u if (!node) return -ENOENT; - guard(mutex)(&node->ggtt->lock); + ggtt = node->ggtt; + guard(mutex)(&ggtt->lock); if (xe_ggtt_node_pt_size(node) != size) return -EINVAL; - ggtt = node->ggtt; - start = node->base.start; - end = start + node->base.size - 1; + start = xe_ggtt_node_addr(node); + end = start + xe_ggtt_node_size(node) - 1; while (start < end) { vfid_pte = u64_replace_bits(*buf++, vfid, GGTT_PTE_VFID); @@ -1212,7 +1226,7 @@ u64 xe_ggtt_read_pte(struct xe_ggtt *ggtt, u64 offset) */ u64 xe_ggtt_node_addr(const struct xe_ggtt_node *node) { - return node->base.start; + return node->base.start + node->ggtt->start; } /** -- 2.51.0