return v ? "yes" : "no";
}
+/* As the drm_debugfs_init() routines are called before dev->dev_private is
+ * allocated we need to hook into the minor for release. */
+static int
+drm_add_fake_info_node(struct drm_minor *minor,
+ struct dentry *ent,
+ const void *key)
+{
+ struct drm_info_node *node;
+
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (node == NULL) {
+ debugfs_remove(ent);
+ return -ENOMEM;
+ }
+
+ node->minor = minor;
+ node->dent = ent;
+ node->info_ent = (void *) key;
+
+ mutex_lock(&minor->debugfs_lock);
+ list_add(&node->list, &minor->debugfs_list);
+ mutex_unlock(&minor->debugfs_lock);
+
+ return 0;
+}
+
static int i915_capabilities(struct seq_file *m, void *data)
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
return 0;
}
-static int i915_pipe_crc(struct seq_file *m, void *data)
+struct pipe_crc_info {
+ const char *name;
+ struct drm_device *dev;
+ enum pipe pipe;
+};
+
+static int i915_pipe_crc_open(struct inode *inode, struct file *filep)
+{
+ struct pipe_crc_info *info = inode->i_private;
+ struct drm_i915_private *dev_priv = info->dev->dev_private;
+ struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
+
+ if (!atomic_dec_and_test(&pipe_crc->available)) {
+ atomic_inc(&pipe_crc->available);
+ return -EBUSY; /* already open */
+ }
+
+ filep->private_data = inode->i_private;
+
+ return 0;
+}
+
+static int i915_pipe_crc_release(struct inode *inode, struct file *filep)
+{
+ struct pipe_crc_info *info = inode->i_private;
+ struct drm_i915_private *dev_priv = info->dev->dev_private;
+ struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
+
+ atomic_inc(&pipe_crc->available); /* release the device */
+
+ return 0;
+}
+
+/* (6 fields, 8 chars each, space separated (5) + '\n') */
+#define PIPE_CRC_LINE_LEN (6 * 8 + 5 + 1)
+/* account for \'0' */
+#define PIPE_CRC_BUFFER_LEN (PIPE_CRC_LINE_LEN + 1)
+
+static int pipe_crc_data_count(struct intel_pipe_crc *pipe_crc)
{
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- enum pipe pipe = (enum pipe)node->info_ent->data;
- struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
int head, tail;
- if (dev_priv->pipe_crc[pipe].source == INTEL_PIPE_CRC_SOURCE_NONE) {
- seq_puts(m, "none\n");
+ head = atomic_read(&pipe_crc->head);
+ tail = atomic_read(&pipe_crc->tail);
+
+ return CIRC_CNT(head, tail, INTEL_PIPE_CRC_ENTRIES_NR);
+}
+
+static ssize_t
+i915_pipe_crc_read(struct file *filep, char __user *user_buf, size_t count,
+ loff_t *pos)
+{
+ struct pipe_crc_info *info = filep->private_data;
+ struct drm_device *dev = info->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
+ char buf[PIPE_CRC_BUFFER_LEN];
+ int head, tail, n_entries, n;
+ ssize_t bytes_read;
+
+ /*
+ * Don't allow user space to provide buffers not big enough to hold
+ * a line of data.
+ */
+ if (count < PIPE_CRC_LINE_LEN)
+ return -EINVAL;
+
+ if (pipe_crc->source == INTEL_PIPE_CRC_SOURCE_NONE)
return 0;
+
+ /* nothing to read */
+ while (pipe_crc_data_count(pipe_crc) == 0) {
+ if (filep->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ if (wait_event_interruptible(pipe_crc->wq,
+ pipe_crc_data_count(pipe_crc)))
+ return -ERESTARTSYS;
}
- seq_puts(m, " frame CRC1 CRC2 CRC3 CRC4 CRC5\n");
+ /* We now have one or more entries to read */
head = atomic_read(&pipe_crc->head);
tail = atomic_read(&pipe_crc->tail);
-
- while (CIRC_CNT(head, tail, INTEL_PIPE_CRC_ENTRIES_NR) >= 1) {
+ n_entries = min((size_t)CIRC_CNT(head, tail, INTEL_PIPE_CRC_ENTRIES_NR),
+ count / PIPE_CRC_LINE_LEN);
+ bytes_read = 0;
+ n = 0;
+ do {
struct intel_pipe_crc_entry *entry = &pipe_crc->entries[tail];
+ int ret;
+
+ bytes_read += snprintf(buf, PIPE_CRC_BUFFER_LEN,
+ "%8u %8x %8x %8x %8x %8x\n",
+ entry->frame, entry->crc[0],
+ entry->crc[1], entry->crc[2],
+ entry->crc[3], entry->crc[4]);
- seq_printf(m, "%8u %8x %8x %8x %8x %8x\n", entry->frame,
- entry->crc[0], entry->crc[1], entry->crc[2],
- entry->crc[3], entry->crc[4]);
+ ret = copy_to_user(user_buf + n * PIPE_CRC_LINE_LEN,
+ buf, PIPE_CRC_LINE_LEN);
+ if (ret == PIPE_CRC_LINE_LEN)
+ return -EFAULT;
BUILD_BUG_ON_NOT_POWER_OF_2(INTEL_PIPE_CRC_ENTRIES_NR);
tail = (tail + 1) & (INTEL_PIPE_CRC_ENTRIES_NR - 1);
atomic_set(&pipe_crc->tail, tail);
- }
+ n++;
+ } while (--n_entries);
- return 0;
+ return bytes_read;
}
-static const char *pipe_crc_sources[] = {
+static const struct file_operations i915_pipe_crc_fops = {
+ .owner = THIS_MODULE,
+ .open = i915_pipe_crc_open,
+ .read = i915_pipe_crc_read,
+ .release = i915_pipe_crc_release,
+};
+
+static struct pipe_crc_info i915_pipe_crc_data[I915_MAX_PIPES] = {
+ {
+ .name = "i915_pipe_A_crc",
+ .pipe = PIPE_A,
+ },
+ {
+ .name = "i915_pipe_B_crc",
+ .pipe = PIPE_B,
+ },
+ {
+ .name = "i915_pipe_C_crc",
+ .pipe = PIPE_C,
+ },
+};
+
+static int i915_pipe_crc_create(struct dentry *root, struct drm_minor *minor,
+ enum pipe pipe)
+{
+ struct drm_device *dev = minor->dev;
+ struct dentry *ent;
+ struct pipe_crc_info *info = &i915_pipe_crc_data[pipe];
+
+ info->dev = dev;
+ ent = debugfs_create_file(info->name, S_IRUGO, root, info,
+ &i915_pipe_crc_fops);
+ if (IS_ERR(ent))
+ return PTR_ERR(ent);
+
+ return drm_add_fake_info_node(minor, ent, info);
+}
+
+static const char * const pipe_crc_sources[] = {
"none",
"plane1",
"plane2",
return pipe_crc_sources[source];
}
-static int pipe_crc_ctl_show(struct seq_file *m, void *data)
+static int display_crc_ctl_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
struct drm_i915_private *dev_priv = dev->dev_private;
return 0;
}
-static int pipe_crc_ctl_open(struct inode *inode, struct file *file)
+static int display_crc_ctl_open(struct inode *inode, struct file *file)
{
struct drm_device *dev = inode->i_private;
- return single_open(file, pipe_crc_ctl_show, dev);
+ return single_open(file, display_crc_ctl_show, dev);
}
static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
u32 val;
-
- return -ENODEV;
-
if (!IS_IVYBRIDGE(dev))
return -ENODEV;
/* none -> real source transition */
if (source) {
+ DRM_DEBUG_DRIVER("collecting CRCs for pipe %c, %s\n",
+ pipe_name(pipe), pipe_crc_source_name(source));
+
pipe_crc->entries = kzalloc(sizeof(*pipe_crc->entries) *
INTEL_PIPE_CRC_ENTRIES_NR,
GFP_KERNEL);
/* real source -> none transition */
if (source == INTEL_PIPE_CRC_SOURCE_NONE) {
+ DRM_DEBUG_DRIVER("stopping CRCs for pipe %c\n",
+ pipe_name(pipe));
+
kfree(pipe_crc->entries);
pipe_crc->entries = NULL;
}
/*
* Parse pipe CRC command strings:
- * command: wsp* pipe wsp+ source wsp*
- * pipe: (A | B | C)
+ * command: wsp* object wsp+ name wsp+ source wsp*
+ * object: 'pipe'
+ * name: (A | B | C)
* source: (none | plane1 | plane2 | pf)
* wsp: (#0x20 | #0x9 | #0xA)+
*
* eg.:
- * "A plane1" -> Start CRC computations on plane1 of pipe A
- * "A none" -> Stop CRC
+ * "pipe A plane1" -> Start CRC computations on plane1 of pipe A
+ * "pipe A none" -> Stop CRC
*/
-static int pipe_crc_ctl_tokenize(char *buf, char *words[], int max_words)
+static int display_crc_ctl_tokenize(char *buf, char *words[], int max_words)
{
int n_words = 0;
return n_words;
}
-static int pipe_crc_ctl_parse_pipe(const char *buf, enum pipe *pipe)
+enum intel_pipe_crc_object {
+ PIPE_CRC_OBJECT_PIPE,
+};
+
+static const char * const pipe_crc_objects[] = {
+ "pipe",
+};
+
+static int
+display_crc_ctl_parse_object(const char *buf, enum intel_pipe_crc_object *o)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pipe_crc_objects); i++)
+ if (!strcmp(buf, pipe_crc_objects[i])) {
+ *o = i;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int display_crc_ctl_parse_pipe(const char *buf, enum pipe *pipe)
{
const char name = buf[0];
}
static int
-pipe_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *source)
+display_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *s)
{
int i;
for (i = 0; i < ARRAY_SIZE(pipe_crc_sources); i++)
if (!strcmp(buf, pipe_crc_sources[i])) {
- *source = i;
+ *s = i;
return 0;
}
return -EINVAL;
}
-static int pipe_crc_ctl_parse(struct drm_device *dev, char *buf, size_t len)
+static int display_crc_ctl_parse(struct drm_device *dev, char *buf, size_t len)
{
-#define MAX_WORDS 2
+#define N_WORDS 3
int n_words;
- char *words[MAX_WORDS];
+ char *words[N_WORDS];
enum pipe pipe;
+ enum intel_pipe_crc_object object;
enum intel_pipe_crc_source source;
- n_words = pipe_crc_ctl_tokenize(buf, words, MAX_WORDS);
- if (n_words != 2) {
- DRM_DEBUG_DRIVER("tokenize failed, a command is 2 words\n");
+ n_words = display_crc_ctl_tokenize(buf, words, N_WORDS);
+ if (n_words != N_WORDS) {
+ DRM_DEBUG_DRIVER("tokenize failed, a command is %d words\n",
+ N_WORDS);
+ return -EINVAL;
+ }
+
+ if (display_crc_ctl_parse_object(words[0], &object) < 0) {
+ DRM_DEBUG_DRIVER("unknown object %s\n", words[0]);
return -EINVAL;
}
- if (pipe_crc_ctl_parse_pipe(words[0], &pipe) < 0) {
- DRM_DEBUG_DRIVER("unknown pipe %s\n", words[0]);
+ if (display_crc_ctl_parse_pipe(words[1], &pipe) < 0) {
+ DRM_DEBUG_DRIVER("unknown pipe %s\n", words[1]);
return -EINVAL;
}
- if (pipe_crc_ctl_parse_source(words[1], &source) < 0) {
- DRM_DEBUG_DRIVER("unknown source %s\n", words[1]);
+ if (display_crc_ctl_parse_source(words[2], &source) < 0) {
+ DRM_DEBUG_DRIVER("unknown source %s\n", words[2]);
return -EINVAL;
}
return pipe_crc_set_source(dev, pipe, source);
}
-static ssize_t pipe_crc_ctl_write(struct file *file, const char __user *ubuf,
- size_t len, loff_t *offp)
+static ssize_t display_crc_ctl_write(struct file *file, const char __user *ubuf,
+ size_t len, loff_t *offp)
{
struct seq_file *m = file->private_data;
struct drm_device *dev = m->private;
}
tmpbuf[len] = '\0';
- ret = pipe_crc_ctl_parse(dev, tmpbuf, len);
+ ret = display_crc_ctl_parse(dev, tmpbuf, len);
out:
kfree(tmpbuf);
return len;
}
-static const struct file_operations i915_pipe_crc_ctl_fops = {
+static const struct file_operations i915_display_crc_ctl_fops = {
.owner = THIS_MODULE,
- .open = pipe_crc_ctl_open,
+ .open = display_crc_ctl_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
- .write = pipe_crc_ctl_write
+ .write = display_crc_ctl_write
};
static int
i915_cache_sharing_get, i915_cache_sharing_set,
"%llu\n");
-/* As the drm_debugfs_init() routines are called before dev->dev_private is
- * allocated we need to hook into the minor for release. */
-static int
-drm_add_fake_info_node(struct drm_minor *minor,
- struct dentry *ent,
- const void *key)
-{
- struct drm_info_node *node;
-
- node = kmalloc(sizeof(*node), GFP_KERNEL);
- if (node == NULL) {
- debugfs_remove(ent);
- return -ENOMEM;
- }
-
- node->minor = minor;
- node->dent = ent;
- node->info_ent = (void *) key;
-
- mutex_lock(&minor->debugfs_lock);
- list_add(&node->list, &minor->debugfs_list);
- mutex_unlock(&minor->debugfs_lock);
-
- return 0;
-}
-
static int i915_forcewake_open(struct inode *inode, struct file *file)
{
struct drm_device *dev = inode->i_private;
{"i915_edp_psr_status", i915_edp_psr_status, 0},
{"i915_energy_uJ", i915_energy_uJ, 0},
{"i915_pc8_status", i915_pc8_status, 0},
- {"i915_pipe_A_crc", i915_pipe_crc, 0, (void *)PIPE_A},
- {"i915_pipe_B_crc", i915_pipe_crc, 0, (void *)PIPE_B},
- {"i915_pipe_C_crc", i915_pipe_crc, 0, (void *)PIPE_C},
};
#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
{"i915_gem_drop_caches", &i915_drop_caches_fops},
{"i915_error_state", &i915_error_state_fops},
{"i915_next_seqno", &i915_next_seqno_fops},
- {"i915_pipe_crc_ctl", &i915_pipe_crc_ctl_fops},
+ {"i915_display_crc_ctl", &i915_display_crc_ctl_fops},
};
+void intel_display_crc_init(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int i;
+
+ for (i = 0; i < INTEL_INFO(dev)->num_pipes; i++) {
+ struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[i];
+
+ atomic_set(&pipe_crc->available, 1);
+ init_waitqueue_head(&pipe_crc->wq);
+ }
+}
+
int i915_debugfs_init(struct drm_minor *minor)
{
int ret, i;
if (ret)
return ret;
+ for (i = 0; i < ARRAY_SIZE(i915_pipe_crc_data); i++) {
+ ret = i915_pipe_crc_create(minor->debugfs_root, minor, i);
+ if (ret)
+ return ret;
+ }
+
for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
ret = i915_debugfs_create(minor->debugfs_root, minor,
i915_debugfs_files[i].name,
void i915_debugfs_cleanup(struct drm_minor *minor)
{
+ struct drm_device *dev = minor->dev;
int i;
drm_debugfs_remove_files(i915_debugfs_list,
I915_DEBUGFS_ENTRIES, minor);
+
drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1, minor);
+
+ for (i = 0; i < INTEL_INFO(dev)->num_pipes; i++) {
+ struct drm_info_list *info_list =
+ (struct drm_info_list *)&i915_pipe_crc_data[i];
+
+ drm_debugfs_remove_files(info_list, 1, minor);
+ }
+
for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
struct drm_info_list *info_list =
(struct drm_info_list *) i915_debugfs_files[i].fops;
projects / deliverable / linux.git / blobdiff