diff options
| author | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2019-03-26 00:49:33 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-03-26 22:25:49 +0300 |
| commit | 5a0ba777098a9b90f88ccca2c53dd7382bfba30c (patch) | |
| tree | 3fdb31dc29682f2e4dfeb8d051c63fb212a47709 /drivers/gpu/drm/i915/intel_uncore.c | |
| parent | 6cc5ca76882521998c5138cd1ba67659e8f7f58c (diff) | |
| download | linux-5a0ba777098a9b90f88ccca2c53dd7382bfba30c.tar.xz | |
drm/i915: add HAS_FORCEWAKE flag to uncore
We have several cases where we don't have forcewake (older gens, GVT and
planned display-only uncore), so, instead of checking every time against
the various condition, save the info in a flag and use that.
Note that this patch also change the behavior for gen5 with vpgu
enabled, but this is not an issue since we don't support vgpu on gen5.
v2: split out from previous path, fix check for missing case (Paulo)
v3: Inline helper for clarity in testing flags
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190325214940.23632-3-daniele.ceraolospurio@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uncore.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uncore.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 02341c189803..6ea6351f5123 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -1391,7 +1391,7 @@ static void intel_uncore_fw_domains_init(struct intel_uncore *uncore) { struct drm_i915_private *i915 = uncore_to_i915(uncore); - if (INTEL_GEN(i915) <= 5 || intel_vgpu_active(i915)) + if (!intel_uncore_has_forcewake(uncore)) return; if (INTEL_GEN(i915) >= 11) { @@ -1590,6 +1590,9 @@ int intel_uncore_init(struct intel_uncore *uncore) i915_check_vgpu(i915); + if (INTEL_GEN(i915) > 5 && !intel_vgpu_active(i915)) + uncore->flags |= UNCORE_HAS_FORCEWAKE; + intel_uncore_edram_detect(i915); intel_uncore_fw_domains_init(uncore); __intel_uncore_early_sanitize(uncore, 0); @@ -1598,12 +1601,14 @@ int intel_uncore_init(struct intel_uncore *uncore) uncore->pmic_bus_access_nb.notifier_call = i915_pmic_bus_access_notifier; - if (IS_GEN_RANGE(i915, 2, 4) || intel_vgpu_active(i915)) { - ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen2); - ASSIGN_READ_MMIO_VFUNCS(uncore, gen2); - } else if (IS_GEN(i915, 5)) { - ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen5); - ASSIGN_READ_MMIO_VFUNCS(uncore, gen5); + if (!intel_uncore_has_forcewake(uncore)) { + if (IS_GEN(i915, 5)) { + ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen5); + ASSIGN_READ_MMIO_VFUNCS(uncore, gen5); + } else { + ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen2); + ASSIGN_READ_MMIO_VFUNCS(uncore, gen2); + } } else if (IS_GEN_RANGE(i915, 6, 7)) { ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6); @@ -1912,7 +1917,10 @@ intel_uncore_forcewake_for_read(struct drm_i915_private *dev_priv, } else if (INTEL_GEN(dev_priv) >= 6) { fw_domains = __gen6_reg_read_fw_domains(uncore, offset); } else { - WARN_ON(!IS_GEN_RANGE(dev_priv, 2, 5)); + /* on devices with FW we expect to hit one of the above cases */ + if (intel_uncore_has_forcewake(uncore)) + MISSING_CASE(INTEL_GEN(dev_priv)); + fw_domains = 0; } @@ -1938,7 +1946,10 @@ intel_uncore_forcewake_for_write(struct drm_i915_private *dev_priv, } else if (IS_GEN_RANGE(dev_priv, 6, 7)) { fw_domains = FORCEWAKE_RENDER; } else { - WARN_ON(!IS_GEN_RANGE(dev_priv, 2, 5)); + /* on devices with FW we expect to hit one of the above cases */ + if (intel_uncore_has_forcewake(uncore)) + MISSING_CASE(INTEL_GEN(dev_priv)); + fw_domains = 0; } @@ -1969,7 +1980,7 @@ intel_uncore_forcewake_for_reg(struct drm_i915_private *dev_priv, WARN_ON(!op); - if (intel_vgpu_active(dev_priv)) + if (!intel_uncore_has_forcewake(&dev_priv->uncore)) return 0; if (op & FW_REG_READ) |