mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f787a5f59e
Avoid cause latencies in other clients by not taking the global struct mutex and moving the per-client request manipulation a local per-client mutex. For example, this allows a compositor to schedule a page-flip (through X) whilst an OpenGL application is monopolising the GPU. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
#ifndef _INTEL_RINGBUFFER_H_
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#define _INTEL_RINGBUFFER_H_
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struct intel_hw_status_page {
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void *page_addr;
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unsigned int gfx_addr;
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struct drm_gem_object *obj;
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};
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#define I915_READ_TAIL(ring) I915_READ(RING_TAIL(ring->mmio_base))
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#define I915_WRITE_TAIL(ring, val) I915_WRITE(RING_TAIL(ring->mmio_base), val)
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#define I915_READ_START(ring) I915_READ(RING_START(ring->mmio_base))
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#define I915_WRITE_START(ring, val) I915_WRITE(RING_START(ring->mmio_base), val)
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#define I915_READ_HEAD(ring) I915_READ(RING_HEAD(ring->mmio_base))
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#define I915_WRITE_HEAD(ring, val) I915_WRITE(RING_HEAD(ring->mmio_base), val)
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#define I915_READ_CTL(ring) I915_READ(RING_CTL(ring->mmio_base))
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#define I915_WRITE_CTL(ring, val) I915_WRITE(RING_CTL(ring->mmio_base), val)
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struct drm_i915_gem_execbuffer2;
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struct intel_ring_buffer {
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const char *name;
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enum intel_ring_id {
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RING_RENDER = 0x1,
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RING_BSD = 0x2,
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} id;
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u32 mmio_base;
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unsigned long size;
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void *virtual_start;
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struct drm_device *dev;
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struct drm_gem_object *gem_object;
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unsigned int head;
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unsigned int tail;
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int space;
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struct intel_hw_status_page status_page;
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u32 irq_gem_seqno; /* last seq seem at irq time */
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u32 waiting_gem_seqno;
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int user_irq_refcount;
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void (*user_irq_get)(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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void (*user_irq_put)(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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void (*setup_status_page)(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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int (*init)(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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void (*set_tail)(struct drm_device *dev,
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struct intel_ring_buffer *ring,
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u32 value);
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unsigned int (*get_active_head)(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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void (*flush)(struct drm_device *dev,
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struct intel_ring_buffer *ring,
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u32 invalidate_domains,
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u32 flush_domains);
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u32 (*add_request)(struct drm_device *dev,
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struct intel_ring_buffer *ring,
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u32 flush_domains);
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u32 (*get_seqno)(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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int (*dispatch_gem_execbuffer)(struct drm_device *dev,
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struct intel_ring_buffer *ring,
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struct drm_i915_gem_execbuffer2 *exec,
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struct drm_clip_rect *cliprects,
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uint64_t exec_offset);
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/**
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* List of objects currently involved in rendering from the
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* ringbuffer.
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*
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* Includes buffers having the contents of their GPU caches
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* flushed, not necessarily primitives. last_rendering_seqno
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* represents when the rendering involved will be completed.
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*
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* A reference is held on the buffer while on this list.
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*/
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struct list_head active_list;
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/**
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* List of breadcrumbs associated with GPU requests currently
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* outstanding.
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*/
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struct list_head request_list;
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wait_queue_head_t irq_queue;
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drm_local_map_t map;
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};
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static inline u32
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intel_read_status_page(struct intel_ring_buffer *ring,
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int reg)
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{
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u32 *regs = ring->status_page.page_addr;
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return regs[reg];
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}
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int intel_init_ring_buffer(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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void intel_cleanup_ring_buffer(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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int intel_wait_ring_buffer(struct drm_device *dev,
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struct intel_ring_buffer *ring, int n);
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void intel_ring_begin(struct drm_device *dev,
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struct intel_ring_buffer *ring, int n);
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static inline void intel_ring_emit(struct drm_device *dev,
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struct intel_ring_buffer *ring,
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unsigned int data)
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{
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unsigned int *virt = ring->virtual_start + ring->tail;
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*virt = data;
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ring->tail += 4;
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}
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void intel_fill_struct(struct drm_device *dev,
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struct intel_ring_buffer *ring,
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void *data,
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unsigned int len);
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void intel_ring_advance(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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u32 intel_ring_get_seqno(struct drm_device *dev,
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struct intel_ring_buffer *ring);
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int intel_init_render_ring_buffer(struct drm_device *dev);
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int intel_init_bsd_ring_buffer(struct drm_device *dev);
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#endif /* _INTEL_RINGBUFFER_H_ */
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