linux-kernel - [PATCH v2 2/2] drm/v3d: client ranges from axi

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Message-ID: <20250425122522.18425-2-jmcasanova@igalia.com>
Date: Fri, 25 Apr 2025 14:25:08 +0200
From: Jose Maria Casanova Crespo <jmcasanova@...lia.com>
To: Melissa Wen <mwen@...lia.com>,
	Maíra Canal <mcanal@...lia.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Iago Toral Quiroga <itoral@...lia.com>
Cc: Jose Maria Casanova Crespo <jmcasanova@...lia.com>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	kernel-dev@...lia.com
Subject: [PATCH v2 2/2] drm/v3d: client ranges from axi_ids are different with V3D 7.1

The client mask has been reduced from 8 bits on V3D 4.1 to 7 bits
on V3D 7.1, so the ranges for each client are not compatible.

On V3D 7.1, the CSD client can also report MMU errors.
Therefore, add its AXI ID to the IDs list.

Fixes: 0ad5bc1ce463 ("drm/v3d: fix up register addresses for V3D 7.x")
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@...lia.com>
---
 drivers/gpu/drm/v3d/v3d_irq.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

Changes in v2:
- Use imperative in commit log. (Maíra Canal)
- Fixed Typos in commit log.

diff --git a/drivers/gpu/drm/v3d/v3d_irq.c b/drivers/gpu/drm/v3d/v3d_irq.c
index d6ce1324905d..2cca5d3a26a2 100644
--- a/drivers/gpu/drm/v3d/v3d_irq.c
+++ b/drivers/gpu/drm/v3d/v3d_irq.c
@@ -199,12 +199,33 @@ v3d_hub_irq(int irq, void *arg)
 			{0xA0, 0xA1, "TFU"},
 			{0xC0, 0xE0, "MMU"},
 			{0xE0, 0xE1, "GMP"},
+		}, v3d71_axi_ids[] = {
+			{0x00, 0x30, "L2T"},
+			{0x30, 0x38, "CLE"},
+			{0x38, 0x39, "PTB"},
+			{0x39, 0x3A, "PSE"},
+			{0x3A, 0x3B, "CSD"},
+			{0x40, 0x60, "TLB"},
+			{0x60, 0x70, "MMU"},
+			{0x7C, 0x7E, "TFU"},
+			{0x7F, 0x80, "GMP"},
 		};
 		const char *client = "?";
 
 		V3D_WRITE(V3D_MMU_CTL, V3D_READ(V3D_MMU_CTL));
 
-		if (v3d->ver >= V3D_GEN_41) {
+		if (v3d->ver >= V3D_GEN_71) {
+			size_t i;
+
+			axi_id = axi_id & 0x7F;
+			for (i = 0; i < ARRAY_SIZE(v3d71_axi_ids); i++) {
+				if (axi_id >= v3d71_axi_ids[i].begin &&
+				    axi_id < v3d71_axi_ids[i].end) {
+					client = v3d71_axi_ids[i].client;
+					break;
+				}
+			}
+		} else if (v3d->ver >= V3D_GEN_41) {
 			size_t i;
 
 			axi_id = axi_id & 0xFF;
-- 
2.49.0