Merge tag 'drm-misc-fixes-2024-11-14' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Short summary of fixes pull:

bridge:
- tc358768: Fix DSI command tx

nouveau:
- Fix GSP AUX error handling
- dp: Handle retires for AUX CH transfers with GSP
- fw: Sync DMA after setup

panthor:
- Fix partial BO mappings to GPU

rockchip:
- vop: Avoid null-ptr deref in plane-state check

vmwgfx:
- Avoid null-ptr deref in surface creation

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20241114142256.GA86810@2a02-2454-fd5e-fd00-4ce-489-4b34-bd1a.dyn6.pyur.net

3 files changed, 44 insertions, 32 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
index 027867c2a8c5..99110ab2f44d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
@@ -992,7 +992,7 @@ r535_dp_train_target(struct nvkm_outp *outp, u8 target, bool mst, u8 link_nr, u8
 		ctrl->data = data;
 
 		ret = nvkm_gsp_rm_ctrl_push(&disp->rm.objcom, &ctrl, sizeof(*ctrl));
-		if (ret == -EAGAIN && ctrl->retryTimeMs) {
+		if ((ret == -EAGAIN || ret == -EBUSY) && ctrl->retryTimeMs) {
 			/*
 			 * Device (likely an eDP panel) isn't ready yet, wait for the time specified
 			 * by GSP before retrying again
@@ -1060,33 +1060,44 @@ r535_dp_aux_xfer(struct nvkm_outp *outp, u8 type, u32 addr, u8 *data, u8 *psize)
 	NV0073_CTRL_DP_AUXCH_CTRL_PARAMS *ctrl;
 	u8 size = *psize;
 	int ret;
+	int retries;
 
-	ctrl = nvkm_gsp_rm_ctrl_get(&disp->rm.objcom, NV0073_CTRL_CMD_DP_AUXCH_CTRL, sizeof(*ctrl));
-	if (IS_ERR(ctrl))
-		return PTR_ERR(ctrl);
+	for (retries = 0; retries < 3; ++retries) {
+		ctrl = nvkm_gsp_rm_ctrl_get(&disp->rm.objcom, NV0073_CTRL_CMD_DP_AUXCH_CTRL, sizeof(*ctrl));
+		if (IS_ERR(ctrl))
+			return PTR_ERR(ctrl);
 
-	ctrl->subDeviceInstance = 0;
-	ctrl->displayId = BIT(outp->index);
-	ctrl->bAddrOnly = !size;
-	ctrl->cmd = type;
-	if (ctrl->bAddrOnly) {
-		ctrl->cmd = NVDEF_SET(ctrl->cmd, NV0073_CTRL, DP_AUXCH_CMD, REQ_TYPE, WRITE);
-		ctrl->cmd = NVDEF_SET(ctrl->cmd, NV0073_CTRL, DP_AUXCH_CMD,  I2C_MOT, FALSE);
-	}
-	ctrl->addr = addr;
-	ctrl->size = !ctrl->bAddrOnly ? (size - 1) : 0;
-	memcpy(ctrl->data, data, size);
+		ctrl->subDeviceInstance = 0;
+		ctrl->displayId = BIT(outp->index);
+		ctrl->bAddrOnly = !size;
+		ctrl->cmd = type;
+		if (ctrl->bAddrOnly) {
+			ctrl->cmd = NVDEF_SET(ctrl->cmd, NV0073_CTRL, DP_AUXCH_CMD, REQ_TYPE, WRITE);
+			ctrl->cmd = NVDEF_SET(ctrl->cmd, NV0073_CTRL, DP_AUXCH_CMD,  I2C_MOT, FALSE);
+		}
+		ctrl->addr = addr;
+		ctrl->size = !ctrl->bAddrOnly ? (size - 1) : 0;
+		memcpy(ctrl->data, data, size);
 
-	ret = nvkm_gsp_rm_ctrl_push(&disp->rm.objcom, &ctrl, sizeof(*ctrl));
-	if (ret) {
-		nvkm_gsp_rm_ctrl_done(&disp->rm.objcom, ctrl);
-		return ret;
+		ret = nvkm_gsp_rm_ctrl_push(&disp->rm.objcom, &ctrl, sizeof(*ctrl));
+		if ((ret == -EAGAIN || ret == -EBUSY) && ctrl->retryTimeMs) {
+			/*
+			 * Device (likely an eDP panel) isn't ready yet, wait for the time specified
+			 * by GSP before retrying again
+			 */
+			nvkm_debug(&disp->engine.subdev,
+				   "Waiting %dms for GSP LT panel delay before retrying in AUX\n",
+				   ctrl->retryTimeMs);
+			msleep(ctrl->retryTimeMs);
+			nvkm_gsp_rm_ctrl_done(&disp->rm.objcom, ctrl);
+		} else {
+			memcpy(data, ctrl->data, size);
+			*psize = ctrl->size;
+			ret = ctrl->replyType;
+			nvkm_gsp_rm_ctrl_done(&disp->rm.objcom, ctrl);
+			break;
+		}
 	}
-
-	memcpy(data, ctrl->data, size);
-	*psize = ctrl->size;
-	ret = ctrl->replyType;
-	nvkm_gsp_rm_ctrl_done(&disp->rm.objcom, ctrl);
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/falcon/fw.c b/drivers/gpu/drm/nouveau/nvkm/falcon/fw.c
index a1c8545f1249..cac6d64ab67d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/falcon/fw.c
+++ b/drivers/gpu/drm/nouveau/nvkm/falcon/fw.c
@@ -89,11 +89,6 @@ nvkm_falcon_fw_boot(struct nvkm_falcon_fw *fw, struct nvkm_subdev *user,
 		nvkm_falcon_fw_dtor_sigs(fw);
 	}
 
-	/* after last write to the img, sync dma mappings */
-	dma_sync_single_for_device(fw->fw.device->dev,
-				   fw->fw.phys,
-				   sg_dma_len(&fw->fw.mem.sgl),
-				   DMA_TO_DEVICE);
 
 	FLCNFW_DBG(fw, "resetting");
 	fw->func->reset(fw);
@@ -105,6 +100,12 @@ nvkm_falcon_fw_boot(struct nvkm_falcon_fw *fw, struct nvkm_subdev *user,
 			goto done;
 	}
 
+	/* after last write to the img, sync dma mappings */
+	dma_sync_single_for_device(fw->fw.device->dev,
+				   fw->fw.phys,
+				   sg_dma_len(&fw->fw.mem.sgl),
+				   DMA_TO_DEVICE);
+
 	ret = fw->func->load(fw);
 	if (ret)
 		goto done;
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c
index cf58f9da9139..d586aea30898 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c
@@ -78,7 +78,7 @@ r535_rpc_status_to_errno(uint32_t rpc_status)
 	switch (rpc_status) {
 	case 0x55: /* NV_ERR_NOT_READY */
 	case 0x66: /* NV_ERR_TIMEOUT_RETRY */
-		return -EAGAIN;
+		return -EBUSY;
 	case 0x51: /* NV_ERR_NO_MEMORY */
 		return -ENOMEM;
 	default:
@@ -601,7 +601,7 @@ r535_gsp_rpc_rm_alloc_push(struct nvkm_gsp_object *object, void *argv, u32 repc)
 
 	if (rpc->status) {
 		ret = ERR_PTR(r535_rpc_status_to_errno(rpc->status));
-		if (PTR_ERR(ret) != -EAGAIN)
+		if (PTR_ERR(ret) != -EAGAIN && PTR_ERR(ret) != -EBUSY)
 			nvkm_error(&gsp->subdev, "RM_ALLOC: 0x%x\n", rpc->status);
 	} else {
 		ret = repc ? rpc->params : NULL;
@@ -660,7 +660,7 @@ r535_gsp_rpc_rm_ctrl_push(struct nvkm_gsp_object *object, void **argv, u32 repc)
 
 	if (rpc->status) {
 		ret = r535_rpc_status_to_errno(rpc->status);
-		if (ret != -EAGAIN)
+		if (ret != -EAGAIN && ret != -EBUSY)
 			nvkm_error(&gsp->subdev, "cli:0x%08x obj:0x%08x ctrl cmd:0x%08x failed: 0x%08x\n",
 				   object->client->object.handle, object->handle, rpc->cmd, rpc->status);
 	}