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path: root/drivers/gpu/drm/i915/i915_debugfs.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
-rw-r--r--drivers/gpu/drm/i915/i915_debugfs.c570
1 files changed, 536 insertions, 34 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 61fd61969e2..061182a0ce1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -27,6 +27,8 @@
*/
#include <linux/seq_file.h>
+#include <linux/circ_buf.h>
+#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <linux/slab.h>
#include <linux/export.h>
@@ -38,9 +40,6 @@
#include <drm/i915_drm.h>
#include "i915_drv.h"
-#define DRM_I915_RING_DEBUG 1
-
-
#if defined(CONFIG_DEBUG_FS)
enum {
@@ -54,6 +53,32 @@ static const char *yesno(int v)
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;
@@ -850,6 +875,8 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused)
drm_i915_private_t *dev_priv = dev->dev_private;
int ret;
+ flush_delayed_work(&dev_priv->rps.delayed_resume_work);
+
if (IS_GEN5(dev)) {
u16 rgvswctl = I915_READ16(MEMSWCTL);
u16 rgvstat = I915_READ16(MEMSTAT_ILK);
@@ -1328,6 +1355,8 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
return 0;
}
+ flush_delayed_work(&dev_priv->rps.delayed_resume_work);
+
ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
if (ret)
return ret;
@@ -1402,12 +1431,12 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
struct drm_device *dev = node->minor->dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct intel_fbdev *ifbdev;
+ struct intel_fbdev *ifbdev = NULL;
struct intel_framebuffer *fb;
- int ret;
- ret = mutex_lock_interruptible(&dev->mode_config.mutex);
+#ifdef CONFIG_DRM_I915_FBDEV
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int ret = mutex_lock_interruptible(&dev->mode_config.mutex);
if (ret)
return ret;
@@ -1423,10 +1452,11 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
describe_obj(m, fb->obj);
seq_putc(m, '\n');
mutex_unlock(&dev->mode_config.mutex);
+#endif
mutex_lock(&dev->mode_config.fb_lock);
list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
- if (&fb->base == ifbdev->helper.fb)
+ if (ifbdev && &fb->base == ifbdev->helper.fb)
continue;
seq_printf(m, "user size: %d x %d, depth %d, %d bpp, refcount %d, obj ",
@@ -1730,6 +1760,467 @@ static int i915_pc8_status(struct seq_file *m, void *unused)
return 0;
}
+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)
+{
+ int head, tail;
+
+ 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;
+ }
+
+ /* We now have one or more entries to read */
+ head = atomic_read(&pipe_crc->head);
+ tail = atomic_read(&pipe_crc->tail);
+ 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]);
+
+ 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 bytes_read;
+}
+
+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",
+ "pf",
+ "pipe",
+};
+
+static const char *pipe_crc_source_name(enum intel_pipe_crc_source source)
+{
+ BUILD_BUG_ON(ARRAY_SIZE(pipe_crc_sources) != INTEL_PIPE_CRC_SOURCE_MAX);
+ return pipe_crc_sources[source];
+}
+
+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;
+ int i;
+
+ for (i = 0; i < I915_MAX_PIPES; i++)
+ seq_printf(m, "%c %s\n", pipe_name(i),
+ pipe_crc_source_name(dev_priv->pipe_crc[i].source));
+
+ return 0;
+}
+
+static int display_crc_ctl_open(struct inode *inode, struct file *file)
+{
+ struct drm_device *dev = inode->i_private;
+
+ return single_open(file, display_crc_ctl_show, dev);
+}
+
+static int ilk_pipe_crc_ctl_reg(enum intel_pipe_crc_source source,
+ uint32_t *val)
+{
+ switch (source) {
+ case INTEL_PIPE_CRC_SOURCE_PLANE1:
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_ILK;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_PLANE2:
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_ILK;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_PF:
+ return -EINVAL;
+ case INTEL_PIPE_CRC_SOURCE_PIPE:
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_ILK;
+ break;
+ default:
+ *val = 0;
+ break;
+ }
+
+ return 0;
+}
+
+static int ivb_pipe_crc_ctl_reg(enum intel_pipe_crc_source source,
+ uint32_t *val)
+{
+ switch (source) {
+ case INTEL_PIPE_CRC_SOURCE_PLANE1:
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_IVB;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_PLANE2:
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_IVB;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_PF:
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PF_IVB;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_PIPE:
+ return -EINVAL;
+ default:
+ *val = 0;
+ break;
+ }
+
+ return 0;
+}
+
+static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
+ enum intel_pipe_crc_source source)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
+ u32 val;
+ int ret;
+
+ if (!(INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev)))
+ return -ENODEV;
+
+ if (pipe_crc->source == source)
+ return 0;
+
+ /* forbid changing the source without going back to 'none' */
+ if (pipe_crc->source && source)
+ return -EINVAL;
+
+ if (IS_GEN5(dev) || IS_GEN6(dev))
+ ret = ilk_pipe_crc_ctl_reg(source, &val);
+ else
+ ret = ivb_pipe_crc_ctl_reg(source, &val);
+
+ if (ret != 0)
+ return ret;
+
+ /* 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);
+ if (!pipe_crc->entries)
+ return -ENOMEM;
+
+ atomic_set(&pipe_crc->head, 0);
+ atomic_set(&pipe_crc->tail, 0);
+ }
+
+ pipe_crc->source = source;
+
+ I915_WRITE(PIPE_CRC_CTL(pipe), val);
+ POSTING_READ(PIPE_CRC_CTL(pipe));
+
+ /* real source -> none transition */
+ if (source == INTEL_PIPE_CRC_SOURCE_NONE) {
+ DRM_DEBUG_DRIVER("stopping CRCs for pipe %c\n",
+ pipe_name(pipe));
+
+ intel_wait_for_vblank(dev, pipe);
+
+ kfree(pipe_crc->entries);
+ pipe_crc->entries = NULL;
+ }
+
+ return 0;
+}
+
+/*
+ * Parse pipe CRC command strings:
+ * command: wsp* object wsp+ name wsp+ source wsp*
+ * object: 'pipe'
+ * name: (A | B | C)
+ * source: (none | plane1 | plane2 | pf)
+ * wsp: (#0x20 | #0x9 | #0xA)+
+ *
+ * eg.:
+ * "pipe A plane1" -> Start CRC computations on plane1 of pipe A
+ * "pipe A none" -> Stop CRC
+ */
+static int display_crc_ctl_tokenize(char *buf, char *words[], int max_words)
+{
+ int n_words = 0;
+
+ while (*buf) {
+ char *end;
+
+ /* skip leading white space */
+ buf = skip_spaces(buf);
+ if (!*buf)
+ break; /* end of buffer */
+
+ /* find end of word */
+ for (end = buf; *end && !isspace(*end); end++)
+ ;
+
+ if (n_words == max_words) {
+ DRM_DEBUG_DRIVER("too many words, allowed <= %d\n",
+ max_words);
+ return -EINVAL; /* ran out of words[] before bytes */
+ }
+
+ if (*end)
+ *end++ = '\0';
+ words[n_words++] = buf;
+ buf = end;
+ }
+
+ return n_words;
+}
+
+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];
+
+ if (name < 'A' || name >= pipe_name(I915_MAX_PIPES))
+ return -EINVAL;
+
+ *pipe = name - 'A';
+
+ return 0;
+}
+
+static int
+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])) {
+ *s = i;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int display_crc_ctl_parse(struct drm_device *dev, char *buf, size_t len)
+{
+#define N_WORDS 3
+ int n_words;
+ char *words[N_WORDS];
+ enum pipe pipe;
+ enum intel_pipe_crc_object object;
+ enum intel_pipe_crc_source source;
+
+ 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 (display_crc_ctl_parse_pipe(words[1], &pipe) < 0) {
+ DRM_DEBUG_DRIVER("unknown pipe %s\n", words[1]);
+ return -EINVAL;
+ }
+
+ 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 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;
+ char *tmpbuf;
+ int ret;
+
+ if (len == 0)
+ return 0;
+
+ if (len > PAGE_SIZE - 1) {
+ DRM_DEBUG_DRIVER("expected <%lu bytes into pipe crc control\n",
+ PAGE_SIZE);
+ return -E2BIG;
+ }
+
+ tmpbuf = kmalloc(len + 1, GFP_KERNEL);
+ if (!tmpbuf)
+ return -ENOMEM;
+
+ if (copy_from_user(tmpbuf, ubuf, len)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ tmpbuf[len] = '\0';
+
+ ret = display_crc_ctl_parse(dev, tmpbuf, len);
+
+out:
+ kfree(tmpbuf);
+ if (ret < 0)
+ return ret;
+
+ *offp += len;
+ return len;
+}
+
+static const struct file_operations i915_display_crc_ctl_fops = {
+ .owner = THIS_MODULE,
+ .open = display_crc_ctl_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = display_crc_ctl_write
+};
+
static int
i915_wedged_get(void *data, u64 *val)
{
@@ -1943,6 +2434,8 @@ i915_max_freq_get(void *data, u64 *val)
if (!(IS_GEN6(dev) || IS_GEN7(dev)))
return -ENODEV;
+ flush_delayed_work(&dev_priv->rps.delayed_resume_work);
+
ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
if (ret)
return ret;
@@ -1967,6 +2460,8 @@ i915_max_freq_set(void *data, u64 val)
if (!(IS_GEN6(dev) || IS_GEN7(dev)))
return -ENODEV;
+ flush_delayed_work(&dev_priv->rps.delayed_resume_work);
+
DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
@@ -2005,6 +2500,8 @@ i915_min_freq_get(void *data, u64 *val)
if (!(IS_GEN6(dev) || IS_GEN7(dev)))
return -ENODEV;
+ flush_delayed_work(&dev_priv->rps.delayed_resume_work);
+
ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
if (ret)
return ret;
@@ -2029,6 +2526,8 @@ i915_min_freq_set(void *data, u64 val)
if (!(IS_GEN6(dev) || IS_GEN7(dev)))
return -ENODEV;
+ flush_delayed_work(&dev_priv->rps.delayed_resume_work);
+
DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
@@ -2107,32 +2606,6 @@ DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops,
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;
@@ -2254,8 +2727,22 @@ static struct i915_debugfs_files {
{"i915_gem_drop_caches", &i915_drop_caches_fops},
{"i915_error_state", &i915_error_state_fops},
{"i915_next_seqno", &i915_next_seqno_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;
@@ -2264,6 +2751,12 @@ int i915_debugfs_init(struct drm_minor *minor)
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,
@@ -2283,8 +2776,17 @@ void i915_debugfs_cleanup(struct drm_minor *minor)
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 < ARRAY_SIZE(i915_pipe_crc_data); 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;