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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-03-06 22:35:47 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-03-07 23:19:21 +0200 |
| commit | d75434bc341eca20c4d094bc30946028b53d1281 (patch) | |
| tree | b3e805e398698d8648b29bbda836794324315e1d /drivers/gpu/drm/i915/i915_drv.c | |
| parent | 198b8dd91b7978c01a5cc719ce5bd75b3b9732f4 (diff) | |
| download | linux-stable-d75434bc341eca20c4d094bc30946028b53d1281.tar.gz linux-stable-d75434bc341eca20c4d094bc30946028b53d1281.tar.bz2 linux-stable-d75434bc341eca20c4d094bc30946028b53d1281.zip | |
drm/i915: Generalize intel_is_dram_symmetric()
Decouple intel_is_dram_symmetric() from the raw register values
by comparing just the dram_channel_info structs.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190306203551.24592-9-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 71a4da5caee7..08914761303d 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1156,14 +1156,12 @@ skl_dram_get_channel_info(struct dram_channel_info *ch, } static bool -intel_is_dram_symmetric(u32 val_ch0, u32 val_ch1, - struct dram_channel_info *ch0) +intel_is_dram_symmetric(const struct dram_channel_info *ch0, + const struct dram_channel_info *ch1) { - return (val_ch0 == val_ch1 && + return !memcmp(ch0, ch1, sizeof(*ch0)) && (ch0->s_info.size == 0 || - (ch0->l_info.size == ch0->s_info.size && - ch0->l_info.width == ch0->s_info.width && - ch0->l_info.ranks == ch0->s_info.ranks))); + !memcmp(&ch0->l_info, &ch0->s_info, sizeof(ch0->l_info))); } static int @@ -1171,16 +1169,16 @@ skl_dram_get_channels_info(struct drm_i915_private *dev_priv) { struct dram_info *dram_info = &dev_priv->dram_info; struct dram_channel_info ch0 = {}, ch1 = {}; - u32 val_ch0, val_ch1; + u32 val; int ret; - val_ch0 = I915_READ(SKL_MAD_DIMM_CH0_0_0_0_MCHBAR_MCMAIN); - ret = skl_dram_get_channel_info(&ch0, 0, val_ch0); + val = I915_READ(SKL_MAD_DIMM_CH0_0_0_0_MCHBAR_MCMAIN); + ret = skl_dram_get_channel_info(&ch0, 0, val); if (ret == 0) dram_info->num_channels++; - val_ch1 = I915_READ(SKL_MAD_DIMM_CH1_0_0_0_MCHBAR_MCMAIN); - ret = skl_dram_get_channel_info(&ch1, 1, val_ch1); + val = I915_READ(SKL_MAD_DIMM_CH1_0_0_0_MCHBAR_MCMAIN); + ret = skl_dram_get_channel_info(&ch1, 1, val); if (ret == 0) dram_info->num_channels++; @@ -1206,12 +1204,10 @@ skl_dram_get_channels_info(struct drm_i915_private *dev_priv) dram_info->is_16gb_dimm = ch0.is_16gb_dimm || ch1.is_16gb_dimm; - dev_priv->dram_info.symmetric_memory = intel_is_dram_symmetric(val_ch0, - val_ch1, - &ch0); + dram_info->symmetric_memory = intel_is_dram_symmetric(&ch0, &ch1); - DRM_DEBUG_KMS("memory configuration is %sSymmetric memory\n", - dev_priv->dram_info.symmetric_memory ? "" : "not "); + DRM_DEBUG_KMS("Memory configuration is symmetric? %s\n", + yesno(dram_info->symmetric_memory)); return 0; } |