diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 0a893f7400fa..e2662497d50f 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -865,7 +865,7 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused) MEMSTAT_VID_SHIFT); seq_printf(m, "Current P-state: %d\n", (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT); - } else if (IS_GEN6(dev)) { + } else if (IS_GEN6(dev) || IS_GEN7(dev)) { u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS); u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS); u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); @@ -1123,6 +1123,44 @@ static int i915_emon_status(struct seq_file *m, void *unused) return 0; } +static int i915_ring_freq_table(struct seq_file *m, void *unused) +{ + 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; + int ret; + int gpu_freq, ia_freq; + + if (!(IS_GEN6(dev) || IS_GEN7(dev))) { + seq_printf(m, "unsupported on this chipset\n"); + return 0; + } + + ret = mutex_lock_interruptible(&dev->struct_mutex); + if (ret) + return ret; + + seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n"); + + for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay; + gpu_freq++) { + I915_WRITE(GEN6_PCODE_DATA, gpu_freq); + I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | + GEN6_PCODE_READ_MIN_FREQ_TABLE); + if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & + GEN6_PCODE_READY) == 0, 10)) { + DRM_ERROR("pcode read of freq table timed out\n"); + continue; + } + ia_freq = I915_READ(GEN6_PCODE_DATA); + seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100); + } + + mutex_unlock(&dev->struct_mutex); + + return 0; +} + static int i915_gfxec(struct seq_file *m, void *unused) { struct drm_info_node *node = (struct drm_info_node *) m->private; @@ -1430,6 +1468,7 @@ static struct drm_info_list i915_debugfs_list[] = { {"i915_inttoext_table", i915_inttoext_table, 0}, {"i915_drpc_info", i915_drpc_info, 0}, {"i915_emon_status", i915_emon_status, 0}, + {"i915_ring_freq_table", i915_ring_freq_table, 0}, {"i915_gfxec", i915_gfxec, 0}, {"i915_fbc_status", i915_fbc_status, 0}, {"i915_sr_status", i915_sr_status, 0}, |