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From: Maarten Lankhorst <dev@lankhorst.se>
To: intel-xe@lists.freedesktop.org
Cc: Maarten Lankhorst <dev@lankhorst.se>, Matthew.brost@intel.com
Subject: [PATCH 6/7] drm/xe: Improve xe_gt_sriov_pf_config GGTT handling
Date: Tue, 21 Oct 2025 14:18:20 +0200	[thread overview]
Message-ID: <20251021121814.2193153-15-dev@lankhorst.se> (raw)
In-Reply-To: <20251021121814.2193153-9-dev@lankhorst.se>

Do not directly dereference xe_ggtt_node, and add
a function to retrieve the allocated GGTT size.

Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Reviewed-by: <Matthew.brost@intel.com>
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
---
 drivers/gpu/drm/xe/xe_ggtt.c               | 11 +++++++++++
 drivers/gpu/drm/xe/xe_ggtt.h               |  1 +
 drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c | 15 ++++++++-------
 3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_ggtt.c b/drivers/gpu/drm/xe/xe_ggtt.c
index 05515037e2d6a..81038d94b497d 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.c
+++ b/drivers/gpu/drm/xe/xe_ggtt.c
@@ -1090,3 +1090,14 @@ u64 xe_ggtt_node_addr(const struct xe_ggtt_node *node)
 {
 	return node->base.start;
 }
+
+/**
+ * xe_ggtt_node_size - Get @node allocation size.
+ * @node: &xe_ggtt_node
+ *
+ * Get the allocated node's size.
+ */
+u64 xe_ggtt_node_size(const struct xe_ggtt_node *node)
+{
+	return node->base.size;
+}
diff --git a/drivers/gpu/drm/xe/xe_ggtt.h b/drivers/gpu/drm/xe/xe_ggtt.h
index 4a8ef1b824156..b69f05a6adbf8 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.h
+++ b/drivers/gpu/drm/xe/xe_ggtt.h
@@ -59,5 +59,6 @@ u64 xe_ggtt_encode_pte_flags(struct xe_ggtt *ggtt, struct xe_bo *bo, u16 pat_ind
 u64 xe_ggtt_read_pte(struct xe_ggtt *ggtt, u64 offset);
 
 u64 xe_ggtt_node_addr(const struct xe_ggtt_node *node);
+u64 xe_ggtt_node_size(const struct xe_ggtt_node *node);
 
 #endif
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
index f96f96425c2ec..19d1013d0c4c8 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
@@ -264,7 +264,7 @@ static u32 encode_config_ggtt(u32 *cfg, const struct xe_gt_sriov_config *config,
 	if (!xe_ggtt_node_allocated(node))
 		return 0;
 
-	return encode_ggtt(cfg, node->base.start, node->base.size, details);
+	return encode_ggtt(cfg, xe_ggtt_node_addr(node), xe_ggtt_node_size(node), details);
 }
 
 /* Return: number of configuration dwords written */
@@ -495,9 +495,9 @@ static int pf_provision_vf_ggtt(struct xe_gt *gt, unsigned int vfid, u64 size)
 
 	xe_ggtt_assign(node, vfid);
 	xe_gt_sriov_dbg_verbose(gt, "VF%u assigned GGTT %llx-%llx\n",
-				vfid, node->base.start, node->base.start + node->base.size - 1);
+				vfid, xe_ggtt_node_addr(node), xe_ggtt_node_addr(node) + size - 1);
 
-	err = pf_distribute_config_ggtt(gt->tile, vfid, node->base.start, node->base.size);
+	err = pf_distribute_config_ggtt(gt->tile, vfid, xe_ggtt_node_addr(node), size);
 	if (unlikely(err))
 		goto err;
 
@@ -514,7 +514,7 @@ static u64 pf_get_vf_config_ggtt(struct xe_gt *gt, unsigned int vfid)
 	struct xe_ggtt_node *node = config->ggtt_region;
 
 	xe_gt_assert(gt, xe_gt_is_main_type(gt));
-	return xe_ggtt_node_allocated(node) ? node->base.size : 0;
+	return xe_ggtt_node_allocated(node) ? xe_ggtt_node_size(node) : 0;
 }
 
 /**
@@ -2517,11 +2517,12 @@ int xe_gt_sriov_pf_config_print_ggtt(struct xe_gt *gt, struct drm_printer *p)
 		if (!xe_ggtt_node_allocated(config->ggtt_region))
 			continue;
 
-		string_get_size(config->ggtt_region->base.size, 1, STRING_UNITS_2,
+		string_get_size(xe_ggtt_node_size(config->ggtt_region), 1, STRING_UNITS_2,
 				buf, sizeof(buf));
 		drm_printf(p, "VF%u:\t%#0llx-%#llx\t(%s)\n",
-			   n, config->ggtt_region->base.start,
-			   config->ggtt_region->base.start + config->ggtt_region->base.size - 1,
+			   n, xe_ggtt_node_addr(config->ggtt_region),
+			   xe_ggtt_node_addr(config->ggtt_region) +
+			   xe_ggtt_node_size(config->ggtt_region) - 1,
 			   buf);
 	}
 
-- 
2.51.0


  parent reply	other threads:[~2025-10-21 12:18 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-21 12:18 [PATCH 0/7] drm/xe: Privatize struct xe_ggtt_node Maarten Lankhorst
2025-10-21 12:18 ` [PATCH 1/7] drm/xe: Start using ggtt->start in preparation of balloon removal Maarten Lankhorst
2025-10-21 12:18 ` [PATCH 2/7] drm/xe: Convert xe_fb_pin to use a callback for insertion into GGTT Maarten Lankhorst
2025-10-21 12:18 ` [PATCH 3/7] drm/xe: Add xe_ggtt_node_addr() to avoid dereferencing xe_ggtt_node Maarten Lankhorst
2025-10-21 13:15   ` Michal Wajdeczko
2025-10-21 13:48     ` Maarten Lankhorst
2025-10-21 12:18 ` [PATCH 4/7] drm/xe/display: Avoid " Maarten Lankhorst
2025-10-21 12:18 ` [PATCH 5/7] drm/xe: Do not dereference ggtt_node in xe_bo.c Maarten Lankhorst
2025-10-21 12:18 ` Maarten Lankhorst [this message]
2025-10-21 12:46   ` [PATCH 6/7] drm/xe: Improve xe_gt_sriov_pf_config GGTT handling Michal Wajdeczko
2025-10-21 12:18 ` [PATCH 7/7] drm/xe: Privatize xe_ggtt_node Maarten Lankhorst
2025-10-21 13:49 ` ✗ CI.checkpatch: warning for drm/xe: Privatize struct xe_ggtt_node Patchwork
2025-10-21 13:50 ` ✗ CI.KUnit: failure " Patchwork

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