Lines Matching +full:use +full:- +full:ring +full:- +full:sense
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
37 * Most engines on the GPU are fed via ring buffers. Ring
43 * pointers are equal, the ring is idle. When the host
44 * writes commands to the ring buffer, it increments the
48 static void radeon_debugfs_ring_init(struct radeon_device *rdev, struct radeon_ring *ring);
51 * radeon_ring_supports_scratch_reg - check if the ring supports
55 * @ring: radeon_ring structure holding ring information
57 * Check if a specific ring supports writing to scratch registers (all asics).
58 * Returns true if the ring supports writing to scratch regs, false if not.
61 struct radeon_ring *ring) in radeon_ring_supports_scratch_reg() argument
63 switch (ring->idx) { in radeon_ring_supports_scratch_reg()
74 * radeon_ring_free_size - update the free size
77 * @ring: radeon_ring structure holding ring information
79 * Update the free dw slots in the ring buffer (all asics).
81 void radeon_ring_free_size(struct radeon_device *rdev, struct radeon_ring *ring) in radeon_ring_free_size() argument
83 uint32_t rptr = radeon_ring_get_rptr(rdev, ring); in radeon_ring_free_size()
86 ring->ring_free_dw = rptr + (ring->ring_size / 4); in radeon_ring_free_size()
87 ring->ring_free_dw -= ring->wptr; in radeon_ring_free_size()
88 ring->ring_free_dw &= ring->ptr_mask; in radeon_ring_free_size()
89 if (!ring->ring_free_dw) { in radeon_ring_free_size()
90 /* this is an empty ring */ in radeon_ring_free_size()
91 ring->ring_free_dw = ring->ring_size / 4; in radeon_ring_free_size()
93 radeon_ring_lockup_update(rdev, ring); in radeon_ring_free_size()
98 * radeon_ring_alloc - allocate space on the ring buffer
101 * @ring: radeon_ring structure holding ring information
102 * @ndw: number of dwords to allocate in the ring buffer
104 * Allocate @ndw dwords in the ring buffer (all asics).
107 int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ndw) in radeon_ring_alloc() argument
111 /* make sure we aren't trying to allocate more space than there is on the ring */ in radeon_ring_alloc()
112 if (ndw > (ring->ring_size / 4)) in radeon_ring_alloc()
113 return -ENOMEM; in radeon_ring_alloc()
116 radeon_ring_free_size(rdev, ring); in radeon_ring_alloc()
117 ndw = (ndw + ring->align_mask) & ~ring->align_mask; in radeon_ring_alloc()
118 while (ndw > (ring->ring_free_dw - 1)) { in radeon_ring_alloc()
119 radeon_ring_free_size(rdev, ring); in radeon_ring_alloc()
120 if (ndw < ring->ring_free_dw) { in radeon_ring_alloc()
123 r = radeon_fence_wait_next(rdev, ring->idx); in radeon_ring_alloc()
127 ring->count_dw = ndw; in radeon_ring_alloc()
128 ring->wptr_old = ring->wptr; in radeon_ring_alloc()
133 * radeon_ring_lock - lock the ring and allocate space on it
136 * @ring: radeon_ring structure holding ring information
137 * @ndw: number of dwords to allocate in the ring buffer
139 * Lock the ring and allocate @ndw dwords in the ring buffer
143 int radeon_ring_lock(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ndw) in radeon_ring_lock() argument
147 mutex_lock(&rdev->ring_lock); in radeon_ring_lock()
148 r = radeon_ring_alloc(rdev, ring, ndw); in radeon_ring_lock()
150 mutex_unlock(&rdev->ring_lock); in radeon_ring_lock()
157 * radeon_ring_commit - tell the GPU to execute the new
158 * commands on the ring buffer
161 * @ring: radeon_ring structure holding ring information
165 * execute new commands on the ring buffer (all asics).
167 void radeon_ring_commit(struct radeon_device *rdev, struct radeon_ring *ring, in radeon_ring_commit() argument
170 /* If we are emitting the HDP flush via the ring buffer, we need to in radeon_ring_commit()
173 if (hdp_flush && rdev->asic->ring[ring->idx]->hdp_flush) in radeon_ring_commit()
174 rdev->asic->ring[ring->idx]->hdp_flush(rdev, ring); in radeon_ring_commit()
176 while (ring->wptr & ring->align_mask) { in radeon_ring_commit()
177 radeon_ring_write(ring, ring->nop); in radeon_ring_commit()
183 if (hdp_flush && rdev->asic->mmio_hdp_flush) in radeon_ring_commit()
184 rdev->asic->mmio_hdp_flush(rdev); in radeon_ring_commit()
185 radeon_ring_set_wptr(rdev, ring); in radeon_ring_commit()
189 * radeon_ring_unlock_commit - tell the GPU to execute the new
190 * commands on the ring buffer and unlock it
193 * @ring: radeon_ring structure holding ring information
196 * Call radeon_ring_commit() then unlock the ring (all asics).
198 void radeon_ring_unlock_commit(struct radeon_device *rdev, struct radeon_ring *ring, in radeon_ring_unlock_commit() argument
201 radeon_ring_commit(rdev, ring, hdp_flush); in radeon_ring_unlock_commit()
202 mutex_unlock(&rdev->ring_lock); in radeon_ring_unlock_commit()
206 * radeon_ring_undo - reset the wptr
208 * @ring: radeon_ring structure holding ring information
212 void radeon_ring_undo(struct radeon_ring *ring) in radeon_ring_undo() argument
214 ring->wptr = ring->wptr_old; in radeon_ring_undo()
218 * radeon_ring_unlock_undo - reset the wptr and unlock the ring
221 * @ring: radeon_ring structure holding ring information
223 * Call radeon_ring_undo() then unlock the ring (all asics).
225 void radeon_ring_unlock_undo(struct radeon_device *rdev, struct radeon_ring *ring) in radeon_ring_unlock_undo() argument
227 radeon_ring_undo(ring); in radeon_ring_unlock_undo()
228 mutex_unlock(&rdev->ring_lock); in radeon_ring_unlock_undo()
232 * radeon_ring_lockup_update - update lockup variables
235 * @ring: radeon_ring structure holding ring information
240 struct radeon_ring *ring) in radeon_ring_lockup_update() argument
242 atomic_set(&ring->last_rptr, radeon_ring_get_rptr(rdev, ring)); in radeon_ring_lockup_update()
243 atomic64_set(&ring->last_activity, jiffies_64); in radeon_ring_lockup_update()
247 * radeon_ring_test_lockup() - check if ring is lockedup by recording information
249 * @ring: radeon_ring structure holding ring information
252 bool radeon_ring_test_lockup(struct radeon_device *rdev, struct radeon_ring *ring) in radeon_ring_test_lockup() argument
254 uint32_t rptr = radeon_ring_get_rptr(rdev, ring); in radeon_ring_test_lockup()
255 uint64_t last = atomic64_read(&ring->last_activity); in radeon_ring_test_lockup()
258 if (rptr != atomic_read(&ring->last_rptr)) { in radeon_ring_test_lockup()
259 /* ring is still working, no lockup */ in radeon_ring_test_lockup()
260 radeon_ring_lockup_update(rdev, ring); in radeon_ring_test_lockup()
264 elapsed = jiffies_to_msecs(jiffies_64 - last); in radeon_ring_test_lockup()
266 dev_err(rdev->dev, "ring %d stalled for more than %llumsec\n", in radeon_ring_test_lockup()
267 ring->idx, elapsed); in radeon_ring_test_lockup()
275 * radeon_ring_backup - Back up the content of a ring
278 * @ring: the ring we want to back up
281 * Saves all unprocessed commits from a ring, returns the number of dwords saved.
283 unsigned radeon_ring_backup(struct radeon_device *rdev, struct radeon_ring *ring, in radeon_ring_backup() argument
288 /* just in case lock the ring */ in radeon_ring_backup()
289 mutex_lock(&rdev->ring_lock); in radeon_ring_backup()
292 if (ring->ring_obj == NULL) { in radeon_ring_backup()
293 mutex_unlock(&rdev->ring_lock); in radeon_ring_backup()
297 /* it doesn't make sense to save anything if all fences are signaled */ in radeon_ring_backup()
298 if (!radeon_fence_count_emitted(rdev, ring->idx)) { in radeon_ring_backup()
299 mutex_unlock(&rdev->ring_lock); in radeon_ring_backup()
303 /* calculate the number of dw on the ring */ in radeon_ring_backup()
304 if (ring->rptr_save_reg) in radeon_ring_backup()
305 ptr = RREG32(ring->rptr_save_reg); in radeon_ring_backup()
306 else if (rdev->wb.enabled) in radeon_ring_backup()
307 ptr = le32_to_cpu(*ring->next_rptr_cpu_addr); in radeon_ring_backup()
310 mutex_unlock(&rdev->ring_lock); in radeon_ring_backup()
314 size = ring->wptr + (ring->ring_size / 4); in radeon_ring_backup()
315 size -= ptr; in radeon_ring_backup()
316 size &= ring->ptr_mask; in radeon_ring_backup()
318 mutex_unlock(&rdev->ring_lock); in radeon_ring_backup()
322 /* and then save the content of the ring */ in radeon_ring_backup()
325 mutex_unlock(&rdev->ring_lock); in radeon_ring_backup()
329 (*data)[i] = ring->ring[ptr++]; in radeon_ring_backup()
330 ptr &= ring->ptr_mask; in radeon_ring_backup()
333 mutex_unlock(&rdev->ring_lock); in radeon_ring_backup()
338 * radeon_ring_restore - append saved commands to the ring again
341 * @ring: ring to append commands to
345 * Allocates space on the ring and restore the previously saved commands.
347 int radeon_ring_restore(struct radeon_device *rdev, struct radeon_ring *ring, in radeon_ring_restore() argument
355 /* restore the saved ring content */ in radeon_ring_restore()
356 r = radeon_ring_lock(rdev, ring, size); in radeon_ring_restore()
361 radeon_ring_write(ring, data[i]); in radeon_ring_restore()
364 radeon_ring_unlock_commit(rdev, ring, false); in radeon_ring_restore()
370 * radeon_ring_init - init driver ring struct.
373 * @ring: radeon_ring structure holding ring information
374 * @ring_size: size of the ring
376 * @nop: nop packet for this ring
378 * Initialize the driver information for the selected ring (all asics).
381 int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ring_size, in radeon_ring_init() argument
386 ring->ring_size = ring_size; in radeon_ring_init()
387 ring->rptr_offs = rptr_offs; in radeon_ring_init()
388 ring->nop = nop; in radeon_ring_init()
389 ring->rdev = rdev; in radeon_ring_init()
390 /* Allocate ring buffer */ in radeon_ring_init()
391 if (ring->ring_obj == NULL) { in radeon_ring_init()
392 r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true, in radeon_ring_init()
394 NULL, &ring->ring_obj); in radeon_ring_init()
396 dev_err(rdev->dev, "(%d) ring create failed\n", r); in radeon_ring_init()
399 r = radeon_bo_reserve(ring->ring_obj, false); in radeon_ring_init()
402 r = radeon_bo_pin(ring->ring_obj, RADEON_GEM_DOMAIN_GTT, in radeon_ring_init()
403 &ring->gpu_addr); in radeon_ring_init()
405 radeon_bo_unreserve(ring->ring_obj); in radeon_ring_init()
406 dev_err(rdev->dev, "(%d) ring pin failed\n", r); in radeon_ring_init()
409 r = radeon_bo_kmap(ring->ring_obj, in radeon_ring_init()
410 (void **)&ring->ring); in radeon_ring_init()
411 radeon_bo_unreserve(ring->ring_obj); in radeon_ring_init()
413 dev_err(rdev->dev, "(%d) ring map failed\n", r); in radeon_ring_init()
417 ring->ptr_mask = (ring->ring_size / 4) - 1; in radeon_ring_init()
418 ring->ring_free_dw = ring->ring_size / 4; in radeon_ring_init()
419 if (rdev->wb.enabled) { in radeon_ring_init()
420 u32 index = RADEON_WB_RING0_NEXT_RPTR + (ring->idx * 4); in radeon_ring_init()
421 ring->next_rptr_gpu_addr = rdev->wb.gpu_addr + index; in radeon_ring_init()
422 ring->next_rptr_cpu_addr = &rdev->wb.wb[index/4]; in radeon_ring_init()
424 radeon_debugfs_ring_init(rdev, ring); in radeon_ring_init()
425 radeon_ring_lockup_update(rdev, ring); in radeon_ring_init()
430 * radeon_ring_fini - tear down the driver ring struct.
433 * @ring: radeon_ring structure holding ring information
435 * Tear down the driver information for the selected ring (all asics).
437 void radeon_ring_fini(struct radeon_device *rdev, struct radeon_ring *ring) in radeon_ring_fini() argument
442 mutex_lock(&rdev->ring_lock); in radeon_ring_fini()
443 ring_obj = ring->ring_obj; in radeon_ring_fini()
444 ring->ready = false; in radeon_ring_fini()
445 ring->ring = NULL; in radeon_ring_fini()
446 ring->ring_obj = NULL; in radeon_ring_fini()
447 mutex_unlock(&rdev->ring_lock); in radeon_ring_fini()
467 struct radeon_ring *ring = m->private; in radeon_debugfs_ring_info_show() local
468 struct radeon_device *rdev = ring->rdev; in radeon_debugfs_ring_info_show()
473 radeon_ring_free_size(rdev, ring); in radeon_debugfs_ring_info_show()
474 count = (ring->ring_size / 4) - ring->ring_free_dw; in radeon_debugfs_ring_info_show()
476 wptr = radeon_ring_get_wptr(rdev, ring); in radeon_debugfs_ring_info_show()
480 rptr = radeon_ring_get_rptr(rdev, ring); in radeon_debugfs_ring_info_show()
484 if (ring->rptr_save_reg) { in radeon_debugfs_ring_info_show()
485 rptr_next = RREG32(ring->rptr_save_reg); in radeon_debugfs_ring_info_show()
487 ring->rptr_save_reg, rptr_next, rptr_next); in radeon_debugfs_ring_info_show()
492 ring->wptr, ring->wptr); in radeon_debugfs_ring_info_show()
494 ring->last_semaphore_signal_addr); in radeon_debugfs_ring_info_show()
496 ring->last_semaphore_wait_addr); in radeon_debugfs_ring_info_show()
497 seq_printf(m, "%u free dwords in ring\n", ring->ring_free_dw); in radeon_debugfs_ring_info_show()
498 seq_printf(m, "%u dwords in ring\n", count); in radeon_debugfs_ring_info_show()
500 if (!ring->ring) in radeon_debugfs_ring_info_show()
506 i = (rptr + ring->ptr_mask + 1 - 32) & ring->ptr_mask; in radeon_debugfs_ring_info_show()
508 seq_printf(m, "r[%5d]=0x%08x", i, ring->ring[i]); in radeon_debugfs_ring_info_show()
514 i = (i + 1) & ring->ptr_mask; in radeon_debugfs_ring_info_show()
547 static void radeon_debugfs_ring_init(struct radeon_device *rdev, struct radeon_ring *ring) in radeon_debugfs_ring_init() argument
550 const char *ring_name = radeon_debugfs_ring_idx_to_name(ring->idx); in radeon_debugfs_ring_init()
551 struct dentry *root = rdev_to_drm(rdev)->primary->debugfs_root; in radeon_debugfs_ring_init()
554 debugfs_create_file(ring_name, 0444, root, ring, in radeon_debugfs_ring_init()