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| author | Jeff McGee | 2015-02-13 17:27:54 +0100 |
|---|---|---|
| committer | Daniel Vetter | 2015-02-23 23:56:59 +0100 |
| commit | 3873218f359a411bf98f6d1d6d15a44f64933163 (patch) | |
| tree | 65758a3340f705aa9bf1386a44ab6bc2c5bcf2cd /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | drm/i915/skl: Implement WaDisablePowerCompilerClockGating (diff) | |
| download | kernel-qcow2-linux-3873218f359a411bf98f6d1d6d15a44f64933163.tar.gz kernel-qcow2-linux-3873218f359a411bf98f6d1d6d15a44f64933163.tar.xz kernel-qcow2-linux-3873218f359a411bf98f6d1d6d15a44f64933163.zip | |
drm/i915/skl: Determine SKL slice/subslice/EU info
Read fuse registers to determine the available slice total,
subslice total, subslice per slice, EU total, and EU per subslice
counts of the SKL device. The EU per subslice attribute is more
precisely defined as the maximum EU available on any one subslice,
since available EU counts may vary across subslices due to fusing.
Set flags indicating the SKL device's slice/subslice/EU (SSEU)
power gating capability. Make all values available via debugfs
entry 'i915_sseu_status'.
v2: Several small clean-ups suggested by Damien. Most notably,
used smaller types for the new device info fields to reduce
memory usage and improved the clarity/readability of the
method used to extract attribute values from the fuse
registers.
Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 3a08684a7af3..238cd6fa48af 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -4358,6 +4358,35 @@ DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops, i915_cache_sharing_get, i915_cache_sharing_set, "%llu\n"); +static int i915_sseu_status(struct seq_file *m, void *unused) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + + if (INTEL_INFO(dev)->gen < 9) + return -ENODEV; + + seq_puts(m, "SSEU Device Info\n"); + seq_printf(m, " Available Slice Total: %u\n", + INTEL_INFO(dev)->slice_total); + seq_printf(m, " Available Subslice Total: %u\n", + INTEL_INFO(dev)->subslice_total); + seq_printf(m, " Available Subslice Per Slice: %u\n", + INTEL_INFO(dev)->subslice_per_slice); + seq_printf(m, " Available EU Total: %u\n", + INTEL_INFO(dev)->eu_total); + seq_printf(m, " Available EU Per Subslice: %u\n", + INTEL_INFO(dev)->eu_per_subslice); + seq_printf(m, " Has Slice Power Gating: %s\n", + yesno(INTEL_INFO(dev)->has_slice_pg)); + seq_printf(m, " Has Subslice Power Gating: %s\n", + yesno(INTEL_INFO(dev)->has_subslice_pg)); + seq_printf(m, " Has EU Power Gating: %s\n", + yesno(INTEL_INFO(dev)->has_eu_pg)); + + return 0; +} + static int i915_forcewake_open(struct inode *inode, struct file *file) { struct drm_device *dev = inode->i_private; @@ -4471,6 +4500,7 @@ static const struct drm_info_list i915_debugfs_list[] = { {"i915_dp_mst_info", i915_dp_mst_info, 0}, {"i915_wa_registers", i915_wa_registers, 0}, {"i915_ddb_info", i915_ddb_info, 0}, + {"i915_sseu_status", i915_sseu_status, 0}, }; #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list) |