97 static void rd_write(struct msm_rd_state *rd, const void *buf, int sz)  in rd_write()  argument
99 	struct circ_buf *fifo = &rd->fifo;  in rd_write()
106 		wait_event(rd->fifo_event, circ_space(&rd->fifo) > 0);  in rd_write()
108 		n = min(sz, circ_space_to_end(&rd->fifo));  in rd_write()
115 		wake_up_all(&rd->fifo_event);  in rd_write()
119 static void rd_write_section(struct msm_rd_state *rd,  in rd_write_section()  argument
122 	rd_write(rd, &type, 4);  in rd_write_section()
123 	rd_write(rd, &sz, 4);  in rd_write_section()
124 	rd_write(rd, buf, sz);  in rd_write_section()
130 	struct msm_rd_state *rd = file->private_data;  in rd_read()  local
131 	struct circ_buf *fifo = &rd->fifo;  in rd_read()
135 	mutex_lock(&rd->read_lock);  in rd_read()
137 	ret = wait_event_interruptible(rd->fifo_event,  in rd_read()
138 			circ_count(&rd->fifo) > 0);  in rd_read()
142 	n = min_t(int, sz, circ_count_to_end(&rd->fifo));  in rd_read()
150 	wake_up_all(&rd->fifo_event);  in rd_read()
153 	mutex_unlock(&rd->read_lock);  in rd_read()
161 	struct msm_rd_state *rd = inode->i_private;  in rd_open()  local
162 	struct drm_device *dev = rd->dev;  in rd_open()
171 	if (rd->open || !gpu) {  in rd_open()
176 	file->private_data = rd;  in rd_open()
177 	rd->open = true;  in rd_open()
185 	rd_write_section(rd, RD_GPU_ID, &gpu_id, sizeof(gpu_id));  in rd_open()
194 	struct msm_rd_state *rd = inode->i_private;  in rd_release()  local
195 	rd->open = false;  in rd_release()
211 	struct msm_rd_state *rd;  in msm_rd_debugfs_init()  local
214 	if (priv->rd)  in msm_rd_debugfs_init()
217 	rd = kzalloc(sizeof(*rd), GFP_KERNEL);  in msm_rd_debugfs_init()
218 	if (!rd)  in msm_rd_debugfs_init()
221 	rd->dev = minor->dev;  in msm_rd_debugfs_init()
222 	rd->fifo.buf = rd->buf;  in msm_rd_debugfs_init()
224 	mutex_init(&rd->read_lock);  in msm_rd_debugfs_init()
225 	priv->rd = rd;  in msm_rd_debugfs_init()
227 	init_waitqueue_head(&rd->fifo_event);  in msm_rd_debugfs_init()
229 	rd->node = kzalloc(sizeof(*rd->node), GFP_KERNEL);  in msm_rd_debugfs_init()
230 	if (!rd->node)  in msm_rd_debugfs_init()
233 	rd->ent = debugfs_create_file("rd", S_IFREG | S_IRUGO,  in msm_rd_debugfs_init()
234 			minor->debugfs_root, rd, &rd_debugfs_fops);  in msm_rd_debugfs_init()
235 	if (!rd->ent) {  in msm_rd_debugfs_init()
241 	rd->node->minor = minor;  in msm_rd_debugfs_init()
242 	rd->node->dent  = rd->ent;  in msm_rd_debugfs_init()
243 	rd->node->info_ent = NULL;  in msm_rd_debugfs_init()
246 	list_add(&rd->node->list, &minor->debugfs_list);  in msm_rd_debugfs_init()
259 	struct msm_rd_state *rd = priv->rd;  in msm_rd_debugfs_cleanup()  local
261 	if (!rd)  in msm_rd_debugfs_cleanup()
264 	priv->rd = NULL;  in msm_rd_debugfs_cleanup()
266 	debugfs_remove(rd->ent);  in msm_rd_debugfs_cleanup()
268 	if (rd->node) {  in msm_rd_debugfs_cleanup()
270 		list_del(&rd->node->list);  in msm_rd_debugfs_cleanup()
272 		kfree(rd->node);  in msm_rd_debugfs_cleanup()
275 	mutex_destroy(&rd->read_lock);  in msm_rd_debugfs_cleanup()
277 	kfree(rd);  in msm_rd_debugfs_cleanup()
285 	struct msm_rd_state *rd = priv->rd;  in msm_rd_dump_submit()  local
289 	if (!rd->open)  in msm_rd_dump_submit()
301 	rd_write_section(rd, RD_CMD, msg, ALIGN(n, 4));  in msm_rd_dump_submit()
317 		rd_write_section(rd, RD_GPUADDR,  in msm_rd_dump_submit()
319 		rd_write_section(rd, RD_BUFFER_CONTENTS,  in msm_rd_dump_submit()
331 			rd_write_section(rd, RD_CMDSTREAM_ADDR,  in msm_rd_dump_submit()