Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 336 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h
new file mode 100644
index 000000000..c4844cf3a
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_gem.h
@@ -0,0 +1,336 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ */
+
+#ifndef __MSM_GEM_H__
+#define __MSM_GEM_H__
+
+#include <linux/kref.h>
+#include <linux/dma-resv.h>
+#include "drm/gpu_scheduler.h"
+#include "msm_drv.h"
+
+/* Make all GEM related WARN_ON()s ratelimited.. when things go wrong they
+ * tend to go wrong 1000s of times in a short timespan.
+ */
+#define GEM_WARN_ON(x)  WARN_RATELIMIT(x, "%s", __stringify(x))
+
+/* Additional internal-use only BO flags: */
+#define MSM_BO_STOLEN        0x10000000    /* try to use stolen/splash memory */
+#define MSM_BO_MAP_PRIV      0x20000000    /* use IOMMU_PRIV when mapping */
+
+struct msm_gem_address_space {
+	const char *name;
+	/* NOTE: mm managed at the page level, size is in # of pages
+	 * and position mm_node->start is in # of pages:
+	 */
+	struct drm_mm mm;
+	spinlock_t lock; /* Protects drm_mm node allocation/removal */
+	struct msm_mmu *mmu;
+	struct kref kref;
+
+	/* For address spaces associated with a specific process, this
+	 * will be non-NULL:
+	 */
+	struct pid *pid;
+
+	/* @faults: the number of GPU hangs associated with this address space */
+	int faults;
+
+	/** @va_start: lowest possible address to allocate */
+	uint64_t va_start;
+
+	/** @va_size: the size of the address space (in bytes) */
+	uint64_t va_size;
+};
+
+struct msm_gem_address_space *
+msm_gem_address_space_get(struct msm_gem_address_space *aspace);
+
+void msm_gem_address_space_put(struct msm_gem_address_space *aspace);
+
+struct msm_gem_address_space *
+msm_gem_address_space_create(struct msm_mmu *mmu, const char *name,
+		u64 va_start, u64 size);
+
+struct msm_fence_context;
+
+struct msm_gem_vma {
+	struct drm_mm_node node;
+	uint64_t iova;
+	struct msm_gem_address_space *aspace;
+	struct list_head list;    /* node in msm_gem_object::vmas */
+	bool mapped;
+	int inuse;
+	uint32_t fence_mask;
+	uint32_t fence[MSM_GPU_MAX_RINGS];
+	struct msm_fence_context *fctx[MSM_GPU_MAX_RINGS];
+};
+
+int msm_gem_init_vma(struct msm_gem_address_space *aspace,
+		struct msm_gem_vma *vma, int size,
+		u64 range_start, u64 range_end);
+bool msm_gem_vma_inuse(struct msm_gem_vma *vma);
+void msm_gem_purge_vma(struct msm_gem_address_space *aspace,
+		struct msm_gem_vma *vma);
+void msm_gem_unpin_vma(struct msm_gem_vma *vma);
+void msm_gem_unpin_vma_fenced(struct msm_gem_vma *vma, struct msm_fence_context *fctx);
+int msm_gem_map_vma(struct msm_gem_address_space *aspace,
+		struct msm_gem_vma *vma, int prot,
+		struct sg_table *sgt, int size);
+void msm_gem_close_vma(struct msm_gem_address_space *aspace,
+		struct msm_gem_vma *vma);
+
+struct msm_gem_object {
+	struct drm_gem_object base;
+
+	uint32_t flags;
+
+	/**
+	 * Advice: are the backing pages purgeable?
+	 */
+	uint8_t madv;
+
+	/**
+	 * count of active vmap'ing
+	 */
+	uint8_t vmap_count;
+
+	/**
+	 * Node in list of all objects (mainly for debugfs, protected by
+	 * priv->obj_lock
+	 */
+	struct list_head node;
+
+	struct page **pages;
+	struct sg_table *sgt;
+	void *vaddr;
+
+	struct list_head vmas;    /* list of msm_gem_vma */
+
+	/* For physically contiguous buffers.  Used when we don't have
+	 * an IOMMU.  Also used for stolen/splashscreen buffer.
+	 */
+	struct drm_mm_node *vram_node;
+
+	char name[32]; /* Identifier to print for the debugfs files */
+
+	int pin_count;
+};
+#define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
+
+uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj);
+int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma);
+void msm_gem_unpin_locked(struct drm_gem_object *obj);
+struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj,
+					   struct msm_gem_address_space *aspace);
+int msm_gem_get_iova(struct drm_gem_object *obj,
+		struct msm_gem_address_space *aspace, uint64_t *iova);
+int msm_gem_set_iova(struct drm_gem_object *obj,
+		struct msm_gem_address_space *aspace, uint64_t iova);
+int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj,
+		struct msm_gem_address_space *aspace, uint64_t *iova,
+		u64 range_start, u64 range_end);
+int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
+		struct msm_gem_address_space *aspace, uint64_t *iova);
+void msm_gem_unpin_iova(struct drm_gem_object *obj,
+		struct msm_gem_address_space *aspace);
+struct page **msm_gem_pin_pages(struct drm_gem_object *obj);
+void msm_gem_unpin_pages(struct drm_gem_object *obj);
+int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
+		struct drm_mode_create_dumb *args);
+int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
+		uint32_t handle, uint64_t *offset);
+void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj);
+void *msm_gem_get_vaddr(struct drm_gem_object *obj);
+void *msm_gem_get_vaddr_active(struct drm_gem_object *obj);
+void msm_gem_put_vaddr_locked(struct drm_gem_object *obj);
+void msm_gem_put_vaddr(struct drm_gem_object *obj);
+int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv);
+bool msm_gem_active(struct drm_gem_object *obj);
+int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout);
+int msm_gem_cpu_fini(struct drm_gem_object *obj);
+int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
+		uint32_t size, uint32_t flags, uint32_t *handle, char *name);
+struct drm_gem_object *msm_gem_new(struct drm_device *dev,
+		uint32_t size, uint32_t flags);
+void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size,
+		uint32_t flags, struct msm_gem_address_space *aspace,
+		struct drm_gem_object **bo, uint64_t *iova);
+void msm_gem_kernel_put(struct drm_gem_object *bo,
+		struct msm_gem_address_space *aspace);
+struct drm_gem_object *msm_gem_import(struct drm_device *dev,
+		struct dma_buf *dmabuf, struct sg_table *sgt);
+__printf(2, 3)
+void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...);
+
+#ifdef CONFIG_DEBUG_FS
+struct msm_gem_stats {
+	struct {
+		unsigned count;
+		size_t size;
+	} all, active, resident, purgeable, purged;
+};
+
+void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m,
+		struct msm_gem_stats *stats);
+void msm_gem_describe_objects(struct list_head *list, struct seq_file *m);
+#endif
+
+static inline void
+msm_gem_lock(struct drm_gem_object *obj)
+{
+	dma_resv_lock(obj->resv, NULL);
+}
+
+static inline int
+msm_gem_lock_interruptible(struct drm_gem_object *obj)
+{
+	return dma_resv_lock_interruptible(obj->resv, NULL);
+}
+
+static inline void
+msm_gem_unlock(struct drm_gem_object *obj)
+{
+	dma_resv_unlock(obj->resv);
+}
+
+static inline void
+msm_gem_assert_locked(struct drm_gem_object *obj)
+{
+	/*
+	 * Destroying the object is a special case.. msm_gem_free_object()
+	 * calls many things that WARN_ON if the obj lock is not held.  But
+	 * acquiring the obj lock in msm_gem_free_object() can cause a
+	 * locking order inversion between reservation_ww_class_mutex and
+	 * fs_reclaim.
+	 *
+	 * This deadlock is not actually possible, because no one should
+	 * be already holding the lock when msm_gem_free_object() is called.
+	 * Unfortunately lockdep is not aware of this detail.  So when the
+	 * refcount drops to zero, we pretend it is already locked.
+	 */
+	lockdep_assert_once(
+		(kref_read(&obj->refcount) == 0) ||
+		(lockdep_is_held(&obj->resv->lock.base) != LOCK_STATE_NOT_HELD)
+	);
+}
+
+/* imported/exported objects are not purgeable: */
+static inline bool is_unpurgeable(struct msm_gem_object *msm_obj)
+{
+	return msm_obj->base.import_attach || msm_obj->pin_count;
+}
+
+static inline bool is_purgeable(struct msm_gem_object *msm_obj)
+{
+	return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt &&
+			!is_unpurgeable(msm_obj);
+}
+
+static inline bool is_vunmapable(struct msm_gem_object *msm_obj)
+{
+	msm_gem_assert_locked(&msm_obj->base);
+	return (msm_obj->vmap_count == 0) && msm_obj->vaddr;
+}
+
+static inline bool is_unevictable(struct msm_gem_object *msm_obj)
+{
+	return is_unpurgeable(msm_obj) || msm_obj->vaddr;
+}
+
+void msm_gem_purge(struct drm_gem_object *obj);
+void msm_gem_evict(struct drm_gem_object *obj);
+void msm_gem_vunmap(struct drm_gem_object *obj);
+
+/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
+ * associated with the cmdstream submission for synchronization (and
+ * make it easier to unwind when things go wrong, etc).
+ */
+struct msm_gem_submit {
+	struct drm_sched_job base;
+	struct kref ref;
+	struct drm_device *dev;
+	struct msm_gpu *gpu;
+	struct msm_gem_address_space *aspace;
+	struct list_head node;   /* node in ring submit list */
+	struct ww_acquire_ctx ticket;
+	uint32_t seqno;		/* Sequence number of the submit on the ring */
+
+	/* Hw fence, which is created when the scheduler executes the job, and
+	 * is signaled when the hw finishes (via seqno write from cmdstream)
+	 */
+	struct dma_fence *hw_fence;
+
+	/* Userspace visible fence, which is signaled by the scheduler after
+	 * the hw_fence is signaled.
+	 */
+	struct dma_fence *user_fence;
+
+	int fence_id;       /* key into queue->fence_idr */
+	struct msm_gpu_submitqueue *queue;
+	struct pid *pid;    /* submitting process */
+	bool fault_dumped;  /* Limit devcoredump dumping to one per submit */
+	bool valid;         /* true if no cmdstream patching needed */
+	bool in_rb;         /* "sudo" mode, copy cmds into RB */
+	struct msm_ringbuffer *ring;
+	unsigned int nr_cmds;
+	unsigned int nr_bos;
+	u32 ident;	   /* A "identifier" for the submit for logging */
+	struct {
+		uint32_t type;
+		uint32_t size;  /* in dwords */
+		uint64_t iova;
+		uint32_t offset;/* in dwords */
+		uint32_t idx;   /* cmdstream buffer idx in bos[] */
+		uint32_t nr_relocs;
+		struct drm_msm_gem_submit_reloc *relocs;
+	} *cmd;  /* array of size nr_cmds */
+	struct {
+/* make sure these don't conflict w/ MSM_SUBMIT_BO_x */
+#define BO_VALID	0x8000	/* is current addr in cmdstream correct/valid? */
+#define BO_LOCKED	0x4000	/* obj lock is held */
+#define BO_OBJ_PINNED	0x2000	/* obj (pages) is pinned and on active list */
+#define BO_VMA_PINNED	0x1000	/* vma (virtual address) is pinned */
+		uint32_t flags;
+		union {
+			struct msm_gem_object *obj;
+			uint32_t handle;
+		};
+		uint64_t iova;
+		struct msm_gem_vma *vma;
+	} bos[];
+};
+
+static inline struct msm_gem_submit *to_msm_submit(struct drm_sched_job *job)
+{
+	return container_of(job, struct msm_gem_submit, base);
+}
+
+void __msm_gem_submit_destroy(struct kref *kref);
+
+static inline void msm_gem_submit_get(struct msm_gem_submit *submit)
+{
+	kref_get(&submit->ref);
+}
+
+static inline void msm_gem_submit_put(struct msm_gem_submit *submit)
+{
+	kref_put(&submit->ref, __msm_gem_submit_destroy);
+}
+
+void msm_submit_retire(struct msm_gem_submit *submit);
+
+/* helper to determine of a buffer in submit should be dumped, used for both
+ * devcoredump and debugfs cmdstream dumping:
+ */
+static inline bool
+should_dump(struct msm_gem_submit *submit, int idx)
+{
+	extern bool rd_full;
+	return rd_full || (submit->bos[idx].flags & MSM_SUBMIT_BO_DUMP);
+}
+
+#endif /* __MSM_GEM_H__ */