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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0113-drm-vc4-Add-an-interface-for-capturing-the-GPU-state.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0113-drm-vc4-Add-an-interface-for-capturing-the-GPU-state.patch333
1 files changed, 0 insertions, 333 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0113-drm-vc4-Add-an-interface-for-capturing-the-GPU-state.patch b/target/linux/brcm2708/patches-4.4/0113-drm-vc4-Add-an-interface-for-capturing-the-GPU-state.patch
deleted file mode 100644
index f18d29a375..0000000000
--- a/target/linux/brcm2708/patches-4.4/0113-drm-vc4-Add-an-interface-for-capturing-the-GPU-state.patch
+++ /dev/null
@@ -1,333 +0,0 @@
-From ad2ad9247674a383ed7ca1c5e762b60625b146ec Mon Sep 17 00:00:00 2001
-From: Eric Anholt <eric@anholt.net>
-Date: Fri, 30 Oct 2015 10:09:02 -0700
-Subject: [PATCH] drm/vc4: Add an interface for capturing the GPU state after a
- hang.
-
-This can be parsed with vc4-gpu-tools tools for trying to figure out
-what was going on.
-
-Signed-off-by: Eric Anholt <eric@anholt.net>
----
- drivers/gpu/drm/vc4/vc4_bo.c | 4 +-
- drivers/gpu/drm/vc4/vc4_drv.c | 1 +
- drivers/gpu/drm/vc4/vc4_drv.h | 4 +
- drivers/gpu/drm/vc4/vc4_gem.c | 185 ++++++++++++++++++++++++++++++++++++++++++
- include/uapi/drm/vc4_drm.h | 45 ++++++++++
- 5 files changed, 237 insertions(+), 2 deletions(-)
-
---- a/drivers/gpu/drm/vc4/vc4_bo.c
-+++ b/drivers/gpu/drm/vc4/vc4_bo.c
-@@ -415,8 +415,8 @@ int vc4_mmap(struct file *filp, struct v
- gem_obj = vma->vm_private_data;
- bo = to_vc4_bo(gem_obj);
-
-- if (bo->validated_shader) {
-- DRM_ERROR("mmaping of shader BOs not allowed.\n");
-+ if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) {
-+ DRM_ERROR("mmaping of shader BOs for writing not allowed.\n");
- return -EINVAL;
- }
-
---- a/drivers/gpu/drm/vc4/vc4_drv.c
-+++ b/drivers/gpu/drm/vc4/vc4_drv.c
-@@ -81,6 +81,7 @@ static const struct drm_ioctl_desc vc4_d
- DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, 0),
- DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, 0),
- DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, 0),
-+ DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl, DRM_ROOT_ONLY),
- };
-
- static struct drm_driver vc4_drm_driver = {
---- a/drivers/gpu/drm/vc4/vc4_drv.h
-+++ b/drivers/gpu/drm/vc4/vc4_drv.h
-@@ -20,6 +20,8 @@ struct vc4_dev {
- struct drm_fbdev_cma *fbdev;
- struct rpi_firmware *firmware;
-
-+ struct vc4_hang_state *hang_state;
-+
- /* The kernel-space BO cache. Tracks buffers that have been
- * unreferenced by all other users (refcounts of 0!) but not
- * yet freed, so we can do cheap allocations.
-@@ -366,6 +368,8 @@ int vc4_create_shader_bo_ioctl(struct dr
- struct drm_file *file_priv);
- int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-+int vc4_get_hang_state_ioctl(struct drm_device *dev, void *data,
-+ struct drm_file *file_priv);
- int vc4_mmap(struct file *filp, struct vm_area_struct *vma);
- int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
- void *vc4_prime_vmap(struct drm_gem_object *obj);
---- a/drivers/gpu/drm/vc4/vc4_gem.c
-+++ b/drivers/gpu/drm/vc4/vc4_gem.c
-@@ -40,6 +40,186 @@ vc4_queue_hangcheck(struct drm_device *d
- round_jiffies_up(jiffies + msecs_to_jiffies(100)));
- }
-
-+struct vc4_hang_state {
-+ struct drm_vc4_get_hang_state user_state;
-+
-+ u32 bo_count;
-+ struct drm_gem_object **bo;
-+};
-+
-+static void
-+vc4_free_hang_state(struct drm_device *dev, struct vc4_hang_state *state)
-+{
-+ unsigned int i;
-+
-+ mutex_lock(&dev->struct_mutex);
-+ for (i = 0; i < state->user_state.bo_count; i++) {
-+ drm_gem_object_unreference(state->bo[i]);
-+ }
-+ mutex_unlock(&dev->struct_mutex);
-+
-+ kfree(state);
-+}
-+
-+int
-+vc4_get_hang_state_ioctl(struct drm_device *dev, void *data,
-+ struct drm_file *file_priv)
-+{
-+ struct drm_vc4_get_hang_state *get_state = data;
-+ struct drm_vc4_get_hang_state_bo *bo_state;
-+ struct vc4_hang_state *kernel_state;
-+ struct drm_vc4_get_hang_state *state;
-+ struct vc4_dev *vc4 = to_vc4_dev(dev);
-+ unsigned long irqflags;
-+ u32 i;
-+ int ret;
-+
-+ spin_lock_irqsave(&vc4->job_lock, irqflags);
-+ kernel_state = vc4->hang_state;
-+ if (!kernel_state) {
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+ return -ENOENT;
-+ }
-+ state = &kernel_state->user_state;
-+
-+ /* If the user's array isn't big enough, just return the
-+ * required array size.
-+ */
-+ if (get_state->bo_count < state->bo_count) {
-+ get_state->bo_count = state->bo_count;
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+ return 0;
-+ }
-+
-+ vc4->hang_state = NULL;
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+
-+ /* Save the user's BO pointer, so we don't stomp it with the memcpy. */
-+ state->bo = get_state->bo;
-+ memcpy(get_state, state, sizeof(*state));
-+
-+ bo_state = kcalloc(state->bo_count, sizeof(*bo_state), GFP_KERNEL);
-+ if (!bo_state) {
-+ ret = -ENOMEM;
-+ goto err_free;
-+ }
-+
-+ for (i = 0; i < state->bo_count; i++) {
-+ struct vc4_bo *vc4_bo = to_vc4_bo(kernel_state->bo[i]);
-+ u32 handle;
-+ ret = drm_gem_handle_create(file_priv, kernel_state->bo[i],
-+ &handle);
-+
-+ if (ret) {
-+ state->bo_count = i - 1;
-+ goto err;
-+ }
-+ bo_state[i].handle = handle;
-+ bo_state[i].paddr = vc4_bo->base.paddr;
-+ bo_state[i].size = vc4_bo->base.base.size;
-+ }
-+
-+ ret = copy_to_user((void __user *)(uintptr_t)get_state->bo,
-+ bo_state,
-+ state->bo_count * sizeof(*bo_state));
-+ kfree(bo_state);
-+
-+ err_free:
-+
-+ vc4_free_hang_state(dev, kernel_state);
-+
-+err:
-+ return ret;
-+}
-+
-+static void
-+vc4_save_hang_state(struct drm_device *dev)
-+{
-+ struct vc4_dev *vc4 = to_vc4_dev(dev);
-+ struct drm_vc4_get_hang_state *state;
-+ struct vc4_hang_state *kernel_state;
-+ struct vc4_exec_info *exec;
-+ struct vc4_bo *bo;
-+ unsigned long irqflags;
-+ unsigned int i, unref_list_count;
-+
-+ kernel_state = kcalloc(1, sizeof(*state), GFP_KERNEL);
-+ if (!kernel_state)
-+ return;
-+
-+ state = &kernel_state->user_state;
-+
-+ spin_lock_irqsave(&vc4->job_lock, irqflags);
-+ exec = vc4_first_job(vc4);
-+ if (!exec) {
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+ return;
-+ }
-+
-+ unref_list_count = 0;
-+ list_for_each_entry(bo, &exec->unref_list, unref_head)
-+ unref_list_count++;
-+
-+ state->bo_count = exec->bo_count + unref_list_count;
-+ kernel_state->bo = kcalloc(state->bo_count, sizeof(*kernel_state->bo),
-+ GFP_ATOMIC);
-+ if (!kernel_state->bo) {
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+ return;
-+ }
-+
-+ for (i = 0; i < exec->bo_count; i++) {
-+ drm_gem_object_reference(&exec->bo[i].bo->base);
-+ kernel_state->bo[i] = &exec->bo[i].bo->base;
-+ }
-+
-+ list_for_each_entry(bo, &exec->unref_list, unref_head) {
-+ drm_gem_object_reference(&bo->base.base);
-+ kernel_state->bo[i] = &bo->base.base;
-+ i++;
-+ }
-+
-+ state->start_bin = exec->ct0ca;
-+ state->start_render = exec->ct1ca;
-+
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+
-+ state->ct0ca = V3D_READ(V3D_CTNCA(0));
-+ state->ct0ea = V3D_READ(V3D_CTNEA(0));
-+
-+ state->ct1ca = V3D_READ(V3D_CTNCA(1));
-+ state->ct1ea = V3D_READ(V3D_CTNEA(1));
-+
-+ state->ct0cs = V3D_READ(V3D_CTNCS(0));
-+ state->ct1cs = V3D_READ(V3D_CTNCS(1));
-+
-+ state->ct0ra0 = V3D_READ(V3D_CT00RA0);
-+ state->ct1ra0 = V3D_READ(V3D_CT01RA0);
-+
-+ state->bpca = V3D_READ(V3D_BPCA);
-+ state->bpcs = V3D_READ(V3D_BPCS);
-+ state->bpoa = V3D_READ(V3D_BPOA);
-+ state->bpos = V3D_READ(V3D_BPOS);
-+
-+ state->vpmbase = V3D_READ(V3D_VPMBASE);
-+
-+ state->dbge = V3D_READ(V3D_DBGE);
-+ state->fdbgo = V3D_READ(V3D_FDBGO);
-+ state->fdbgb = V3D_READ(V3D_FDBGB);
-+ state->fdbgr = V3D_READ(V3D_FDBGR);
-+ state->fdbgs = V3D_READ(V3D_FDBGS);
-+ state->errstat = V3D_READ(V3D_ERRSTAT);
-+
-+ spin_lock_irqsave(&vc4->job_lock, irqflags);
-+ if (vc4->hang_state) {
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+ vc4_free_hang_state(dev, kernel_state);
-+ } else {
-+ vc4->hang_state = kernel_state;
-+ spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-+ }
-+}
-+
- static void
- vc4_reset(struct drm_device *dev)
- {
-@@ -64,6 +244,8 @@ vc4_reset_work(struct work_struct *work)
- struct vc4_dev *vc4 =
- container_of(work, struct vc4_dev, hangcheck.reset_work);
-
-+ vc4_save_hang_state(vc4->dev);
-+
- vc4_reset(vc4->dev);
- }
-
-@@ -673,4 +855,7 @@ vc4_gem_destroy(struct drm_device *dev)
- }
-
- vc4_bo_cache_destroy(dev);
-+
-+ if (vc4->hang_state)
-+ vc4_free_hang_state(dev, vc4->hang_state);
- }
---- a/include/uapi/drm/vc4_drm.h
-+++ b/include/uapi/drm/vc4_drm.h
-@@ -32,6 +32,7 @@
- #define DRM_VC4_CREATE_BO 0x03
- #define DRM_VC4_MMAP_BO 0x04
- #define DRM_VC4_CREATE_SHADER_BO 0x05
-+#define DRM_VC4_GET_HANG_STATE 0x06
-
- #define DRM_IOCTL_VC4_SUBMIT_CL DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_SUBMIT_CL, struct drm_vc4_submit_cl)
- #define DRM_IOCTL_VC4_WAIT_SEQNO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_WAIT_SEQNO, struct drm_vc4_wait_seqno)
-@@ -39,6 +40,7 @@
- #define DRM_IOCTL_VC4_CREATE_BO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_CREATE_BO, struct drm_vc4_create_bo)
- #define DRM_IOCTL_VC4_MMAP_BO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_MMAP_BO, struct drm_vc4_mmap_bo)
- #define DRM_IOCTL_VC4_CREATE_SHADER_BO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_CREATE_SHADER_BO, struct drm_vc4_create_shader_bo)
-+#define DRM_IOCTL_VC4_GET_HANG_STATE DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_GET_HANG_STATE, struct drm_vc4_get_hang_state)
-
- struct drm_vc4_submit_rcl_surface {
- uint32_t hindex; /* Handle index, or ~0 if not present. */
-@@ -226,4 +228,47 @@ struct drm_vc4_mmap_bo {
- uint64_t offset;
- };
-
-+struct drm_vc4_get_hang_state_bo {
-+ uint32_t handle;
-+ uint32_t paddr;
-+ uint32_t size;
-+ uint32_t pad;
-+};
-+
-+/**
-+ * struct drm_vc4_hang_state - ioctl argument for collecting state
-+ * from a GPU hang for analysis.
-+*/
-+struct drm_vc4_get_hang_state {
-+ /** Pointer to array of struct drm_vc4_get_hang_state_bo. */
-+ uint64_t bo;
-+ /**
-+ * On input, the size of the bo array. Output is the number
-+ * of bos to be returned.
-+ */
-+ uint32_t bo_count;
-+
-+ uint32_t start_bin, start_render;
-+
-+ uint32_t ct0ca, ct0ea;
-+ uint32_t ct1ca, ct1ea;
-+ uint32_t ct0cs, ct1cs;
-+ uint32_t ct0ra0, ct1ra0;
-+
-+ uint32_t bpca, bpcs;
-+ uint32_t bpoa, bpos;
-+
-+ uint32_t vpmbase;
-+
-+ uint32_t dbge;
-+ uint32_t fdbgo;
-+ uint32_t fdbgb;
-+ uint32_t fdbgr;
-+ uint32_t fdbgs;
-+ uint32_t errstat;
-+
-+ /* Pad that we may save more registers into in the future. */
-+ uint32_t pad[16];
-+};
-+
- #endif /* _UAPI_VC4_DRM_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 08:42:58 +0000