109 static void rd_write(struct msm_rd_state *rd, const void *buf, int sz)  in rd_write()  argument
111 	struct circ_buf *fifo = &rd->fifo;  in rd_write()
118 		wait_event(rd->fifo_event, circ_space(&rd->fifo) > 0);  in rd_write()
124 		n = min(sz, circ_space_to_end(&rd->fifo));  in rd_write()
131 		wake_up_all(&rd->fifo_event);  in rd_write()
135 static void rd_write_section(struct msm_rd_state *rd,  in rd_write_section()  argument
138 	rd_write(rd, &type, 4);  in rd_write_section()
139 	rd_write(rd, &sz, 4);  in rd_write_section()
140 	rd_write(rd, buf, sz);  in rd_write_section()
146 	struct msm_rd_state *rd = file->private_data;  in rd_read()  local
147 	struct circ_buf *fifo = &rd->fifo;  in rd_read()
151 	mutex_lock(&rd->read_lock);  in rd_read()
153 	ret = wait_event_interruptible(rd->fifo_event,  in rd_read()
154 			circ_count(&rd->fifo) > 0);  in rd_read()
162 	n = min_t(int, sz, circ_count_to_end(&rd->fifo));  in rd_read()
171 	wake_up_all(&rd->fifo_event);  in rd_read()
174 	mutex_unlock(&rd->read_lock);  in rd_read()
182 	struct msm_rd_state *rd = inode->i_private;  in rd_open()  local
183 	struct drm_device *dev = rd->dev;  in rd_open()
192 	if (rd->open || !gpu) {  in rd_open()
197 	file->private_data = rd;  in rd_open()
198 	rd->open = true;  in rd_open()
206 	rd_write_section(rd, RD_GPU_ID, &gpu_id, sizeof(gpu_id));  in rd_open()
215 	struct msm_rd_state *rd = inode->i_private;  in rd_release()  local
216 	rd->open = false;  in rd_release()
230 static void rd_cleanup(struct msm_rd_state *rd)  in rd_cleanup()  argument
232 	if (!rd)  in rd_cleanup()
235 	mutex_destroy(&rd->read_lock);  in rd_cleanup()
236 	kfree(rd);  in rd_cleanup()
241 	struct msm_rd_state *rd;  in rd_init()  local
245 	rd = kzalloc(sizeof(*rd), GFP_KERNEL);  in rd_init()
246 	if (!rd)  in rd_init()
249 	rd->dev = minor->dev;  in rd_init()
250 	rd->fifo.buf = rd->buf;  in rd_init()
252 	mutex_init(&rd->read_lock);  in rd_init()
254 	init_waitqueue_head(&rd->fifo_event);  in rd_init()
257 			minor->debugfs_root, rd, &rd_debugfs_fops);  in rd_init()
265 	return rd;  in rd_init()
268 	rd_cleanup(rd);  in rd_init()
275 	struct msm_rd_state *rd;  in msm_rd_debugfs_init()  local
279 	if (priv->rd)  in msm_rd_debugfs_init()
282 	rd = rd_init(minor, "rd");  in msm_rd_debugfs_init()
283 	if (IS_ERR(rd)) {  in msm_rd_debugfs_init()
284 		ret = PTR_ERR(rd);  in msm_rd_debugfs_init()
288 	priv->rd = rd;  in msm_rd_debugfs_init()
290 	rd = rd_init(minor, "hangrd");  in msm_rd_debugfs_init()
291 	if (IS_ERR(rd)) {  in msm_rd_debugfs_init()
292 		ret = PTR_ERR(rd);  in msm_rd_debugfs_init()
296 	priv->hangrd = rd;  in msm_rd_debugfs_init()
307 	rd_cleanup(priv->rd);  in msm_rd_debugfs_cleanup()
308 	priv->rd = NULL;  in msm_rd_debugfs_cleanup()
314 static void snapshot_buf(struct msm_rd_state *rd,  in snapshot_buf()  argument
332 	rd_write_section(rd, RD_GPUADDR,  in snapshot_buf()
343 	rd_write_section(rd, RD_BUFFER_CONTENTS, buf, size);  in snapshot_buf()
349 void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit,  in msm_rd_dump_submit()  argument
357 	if (!rd->open)  in msm_rd_dump_submit()
372 		rd_write_section(rd, RD_CMD, msg, ALIGN(n, 4));  in msm_rd_dump_submit()
387 	rd_write_section(rd, RD_CMD, msg, ALIGN(n, 4));  in msm_rd_dump_submit()
390 		snapshot_buf(rd, submit, i, 0, 0);  in msm_rd_dump_submit()
398 			snapshot_buf(rd, submit, submit->cmd[i].idx,  in msm_rd_dump_submit()
411 			rd_write_section(rd, RD_CMDSTREAM_ADDR,  in msm_rd_dump_submit()