[PATCH 80/89] drm/i915/skl: Augment the latency debugfs files for SKL

Damien Lespiau
2014-09-04T11:29:16Z

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 76 ++++++++++++++++++++++++++++++-------
1 file changed, 62 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 02cb310..1520d1f 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3499,7 +3499,7 @@ static const struct file_operations i915_display_crc_ctl_fops = {
.write = display_crc_ctl_write
};

-static void wm_latency_show(struct seq_file *m, const uint16_t wm[5])
+static void wm_latency_show(struct seq_file *m, const uint16_t wm[8])
{
struct drm_device *dev = m->private;
int num_levels = ilk_wm_max_level(dev) + 1;
@@ -3510,13 +3510,17 @@ static void wm_latency_show(struct seq_file *m, const uint16_t wm[5])
for (level = 0; level < num_levels; level++) {
unsigned int latency = wm[level];

- /* WM1+ latency values in 0.5us units */
- if (level > 0)
+ /*
+ * - WM1+ latency values in 0.5us units
+ * - latencies are in us on gen9
+ */
+ if (IS_GEN9(dev))
+ latency *= 10;
+ else if (level > 0)
latency *= 5;

seq_printf(m, "WM%d %u (%u.%u usec)\n",
- level, wm[level],
- latency / 10, latency % 10);
+ level, wm[level], latency / 10, latency % 10);
}

drm_modeset_unlock_all(dev);
@@ -3525,8 +3529,15 @@ static void wm_latency_show(struct seq_file *m, const uint16_t wm[5])
static int pri_wm_latency_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const uint16_t *latencies;
+
+ if (INTEL_INFO(dev)->gen >= 9)
+ latencies = dev_priv->wm.skl_latency;
+ else
+ latencies = to_i915(dev)->wm.pri_latency;

- wm_latency_show(m, to_i915(dev)->wm.pri_latency);
+ wm_latency_show(m, latencies);

return 0;
}
@@ -3534,8 +3545,15 @@ static int pri_wm_latency_show(struct seq_file *m, void *data)
static int spr_wm_latency_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const uint16_t *latencies;
+
+ if (INTEL_INFO(dev)->gen >= 9)
+ latencies = dev_priv->wm.skl_latency;
+ else
+ latencies = to_i915(dev)->wm.spr_latency;

- wm_latency_show(m, to_i915(dev)->wm.spr_latency);
+ wm_latency_show(m, latencies);

return 0;
}
@@ -3543,8 +3561,15 @@ static int spr_wm_latency_show(struct seq_file *m, void *data)
static int cur_wm_latency_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const uint16_t *latencies;
+
+ if (INTEL_INFO(dev)->gen >= 9)
+ latencies = dev_priv->wm.skl_latency;
+ else
+ latencies = to_i915(dev)->wm.cur_latency;

- wm_latency_show(m, to_i915(dev)->wm.cur_latency);
+ wm_latency_show(m, latencies);

return 0;
}
@@ -3580,11 +3605,11 @@ static int cur_wm_latency_open(struct inode *inode, struct file *file)
}

static ssize_t wm_latency_write(struct file *file, const char __user *ubuf,
- size_t len, loff_t *offp, uint16_t wm[5])
+ size_t len, loff_t *offp, uint16_t wm[8])
{
struct seq_file *m = file->private_data;
struct drm_device *dev = m->private;
- uint16_t new[5] = { 0 };
+ uint16_t new[8] = { 0 };
int num_levels = ilk_wm_max_level(dev) + 1;
int level;
int ret;
@@ -3598,7 +3623,9 @@ static ssize_t wm_latency_write(struct file *file, const char __user *ubuf,

tmp[len] = '\0';

- ret = sscanf(tmp, "%hu %hu %hu %hu %hu", &new[0], &new[1], &new[2], &new[3], &new[4]);
+ ret = sscanf(tmp, "%hu %hu %hu %hu %hu %hu %hu %hu",
+ &new[0], &new[1], &new[2], &new[3],
+ &new[4], &new[5], &new[6], &new[7]);
if (ret != num_levels)
return -EINVAL;

@@ -3618,8 +3645,15 @@ static ssize_t pri_wm_latency_write(struct file *file, const char __user *ubuf,
{
struct seq_file *m = file->private_data;
struct drm_device *dev = m->private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint16_t *latencies;

- return wm_latency_write(file, ubuf, len, offp, to_i915(dev)->wm.pri_latency);
+ if (INTEL_INFO(dev)->gen >= 9)
+ latencies = dev_priv->wm.skl_latency;
+ else
+ latencies = to_i915(dev)->wm.pri_latency;
+
+ return wm_latency_write(file, ubuf, len, offp, latencies);
}

static ssize_t spr_wm_latency_write(struct file *file, const char __user *ubuf,
@@ -3627,8 +3661,15 @@ static ssize_t spr_wm_latency_write(struct file *file, const char __user *ubuf,
{
struct seq_file *m = file->private_data;
struct drm_device *dev = m->private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint16_t *latencies;

- return wm_latency_write(file, ubuf, len, offp, to_i915(dev)->wm.spr_latency);
+ if (INTEL_INFO(dev)->gen >= 9)
+ latencies = dev_priv->wm.skl_latency;
+ else
+ latencies = to_i915(dev)->wm.spr_latency;
+
+ return wm_latency_write(file, ubuf, len, offp, latencies);
}

static ssize_t cur_wm_latency_write(struct file *file, const char __user *ubuf,
@@ -3636,8 +3677,15 @@ static ssize_t cur_wm_latency_write(struct file *file, const char __user *ubuf,
{
struct seq_file *m = file->private_data;
struct drm_device *dev = m->private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint16_t *latencies;
+
+ if (INTEL_INFO(dev)->gen >= 9)
+ latencies = dev_priv->wm.skl_latency;
+ else
+ latencies = to_i915(dev)->wm.cur_latency;

- return wm_latency_write(file, ubuf, len, offp, to_i915(dev)->wm.cur_latency);
+ return wm_latency_write(file, ubuf, len, offp, latencies);
}

static const struct file_operations i915_pri_wm_latency_fops = {
--
1.8.3.1