Karol Herbst
2024-Mar-05 13:38 UTC
[PATCH v2 1/2] drm/nouveau: fix stale locked mutex in nouveau_gem_ioctl_pushbuf
If VM_BIND is enabled on the client the legacy submission ioctl can't be
used, however if a client tries to do so regardless it will return an
error. In this case the clients mutex remained unlocked leading to a
deadlock inside nouveau_drm_postclose or any other nouveau ioctl call.
Fixes: b88baab82871 ("drm/nouveau: implement new VM_BIND uAPI")
Cc: Danilo Krummrich <dakr at redhat.com>
Cc: <stable at vger.kernel.org> # v6.6+
Signed-off-by: Karol Herbst <kherbst at redhat.com>
Reviewed-by: Lyude Paul <lyude at redhat.com>
Reviewed-by: Danilo Krummrich <dakr at redhat.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20240304183157.1587152-1-kherbst
at redhat.com
---
drivers/gpu/drm/nouveau/nouveau_gem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c
b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 49c2bcbef1299..5a887d67dc0e8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -764,7 +764,7 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void
*data,
return -ENOMEM;
if (unlikely(nouveau_cli_uvmm(cli)))
- return -ENOSYS;
+ return nouveau_abi16_put(abi16, -ENOSYS);
list_for_each_entry(temp, &abi16->channels, head) {
if (temp->chan->chid == req->channel) {
--
2.44.0
Karol Herbst
2024-Mar-05 13:38 UTC
[PATCH v2 2/2] drm/nouveau: move more missing UAPI bits
Those are already de-facto UAPI, so let's just move it into the uapi
header.
Signed-off-by: Karol Herbst <kherbst at redhat.com>
Reviewed-by: Lyude Paul <lyude at redhat.com>
Reviewed-by: Danilo Krummrich <dakr at redhat.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20240304183157.1587152-2-kherbst
at redhat.com
---
drivers/gpu/drm/nouveau/nouveau_abi16.c | 20 +++++++++++++++-----
drivers/gpu/drm/nouveau/nouveau_abi16.h | 12 ------------
include/uapi/drm/nouveau_drm.h | 22 ++++++++++++++++++++++
3 files changed, 37 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c
b/drivers/gpu/drm/nouveau/nouveau_abi16.c
index cd14f993bdd1b..92f9127b284ac 100644
--- a/drivers/gpu/drm/nouveau/nouveau_abi16.c
+++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c
@@ -312,11 +312,21 @@ nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
if (init->fb_ctxdma_handle == ~0) {
switch (init->tt_ctxdma_handle) {
- case 0x01: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_GR ; break;
- case 0x02: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPDEC; break;
- case 0x04: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPPP ; break;
- case 0x08: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSVLD ; break;
- case 0x30: engine = NV_DEVICE_HOST_RUNLIST_ENGINES_CE ; break;
+ case NOUVEAU_FIFO_ENGINE_GR:
+ engine = NV_DEVICE_HOST_RUNLIST_ENGINES_GR;
+ break;
+ case NOUVEAU_FIFO_ENGINE_VP:
+ engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPDEC;
+ break;
+ case NOUVEAU_FIFO_ENGINE_PPP:
+ engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSPPP;
+ break;
+ case NOUVEAU_FIFO_ENGINE_BSP:
+ engine = NV_DEVICE_HOST_RUNLIST_ENGINES_MSVLD;
+ break;
+ case NOUVEAU_FIFO_ENGINE_CE:
+ engine = NV_DEVICE_HOST_RUNLIST_ENGINES_CE;
+ break;
default:
return nouveau_abi16_put(abi16, -ENOSYS);
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.h
b/drivers/gpu/drm/nouveau/nouveau_abi16.h
index 11c8c4a80079b..661b901d8ecc9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_abi16.h
+++ b/drivers/gpu/drm/nouveau/nouveau_abi16.h
@@ -50,18 +50,6 @@ struct drm_nouveau_grobj_alloc {
int class;
};
-struct drm_nouveau_notifierobj_alloc {
- uint32_t channel;
- uint32_t handle;
- uint32_t size;
- uint32_t offset;
-};
-
-struct drm_nouveau_gpuobj_free {
- int channel;
- uint32_t handle;
-};
-
struct drm_nouveau_setparam {
uint64_t param;
uint64_t value;
diff --git a/include/uapi/drm/nouveau_drm.h b/include/uapi/drm/nouveau_drm.h
index 77d7ff0d5b110..5404d4cfff4c2 100644
--- a/include/uapi/drm/nouveau_drm.h
+++ b/include/uapi/drm/nouveau_drm.h
@@ -73,6 +73,16 @@ struct drm_nouveau_getparam {
__u64 value;
};
+/*
+ * Those are used to support selecting the main engine used on Kepler.
+ * This goes into drm_nouveau_channel_alloc::tt_ctxdma_handle
+ */
+#define NOUVEAU_FIFO_ENGINE_GR 0x01
+#define NOUVEAU_FIFO_ENGINE_VP 0x02
+#define NOUVEAU_FIFO_ENGINE_PPP 0x04
+#define NOUVEAU_FIFO_ENGINE_BSP 0x08
+#define NOUVEAU_FIFO_ENGINE_CE 0x30
+
struct drm_nouveau_channel_alloc {
__u32 fb_ctxdma_handle;
__u32 tt_ctxdma_handle;
@@ -95,6 +105,18 @@ struct drm_nouveau_channel_free {
__s32 channel;
};
+struct drm_nouveau_notifierobj_alloc {
+ __u32 channel;
+ __u32 handle;
+ __u32 size;
+ __u32 offset;
+};
+
+struct drm_nouveau_gpuobj_free {
+ __s32 channel;
+ __u32 handle;
+};
+
#define NOUVEAU_GEM_DOMAIN_CPU (1 << 0)
#define NOUVEAU_GEM_DOMAIN_VRAM (1 << 1)
#define NOUVEAU_GEM_DOMAIN_GART (1 << 2)
--
2.44.0