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drm/i915/chv: Populate total EU count on Cherryview 

Starting with Cherryview, devices may have a varying number of EU for
a given ID due to creative fusing. Punit support different frequency for
different fuse data. We use this patch to help get total eu enabled and
read the right offset to get RP0

Based upon a patch from Jeff, but reworked to only store eu_total and
avoid sending info to userspace

v2: Format register definitions (Jani)

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Acked-by: Jeff McGee <jeff.mcgee@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Deepak S 2015-01-16 20:42:16 +05:30 committed by Daniel Vetter
parent d0dc1c8398
commit 693d11c340
3 changed files with 23 additions and 0 deletions
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11
drivers/gpu/drm/i915/i915_dma.c
View File

@ -601,6 +601,17 @@ static void intel_device_info_runtime_init(struct drm_device *dev)
info->num_pipes = 0;
}
}
if (IS_CHERRYVIEW(dev)) {
u32 fuse, mask_eu;
fuse = I915_READ(CHV_FUSE_GT);
mask_eu = fuse & (CHV_FGT_EU_DIS_SS0_R0_MASK |
CHV_FGT_EU_DIS_SS0_R1_MASK |
CHV_FGT_EU_DIS_SS1_R0_MASK |
CHV_FGT_EU_DIS_SS1_R1_MASK);
info->eu_total = 16 - hweight32(mask_eu);
}
}
/**

1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -653,6 +653,7 @@ struct intel_device_info {
int trans_offsets[I915_MAX_TRANSCODERS];
int palette_offsets[I915_MAX_PIPES];
int cursor_offsets[I915_MAX_PIPES];
unsigned int eu_total;
};
#undef DEFINE_FLAG

11
drivers/gpu/drm/i915/i915_reg.h
View File

@ -1471,6 +1471,17 @@ enum punit_power_well {
#define GEN8_RC_SEMA_IDLE_MSG_DISABLE (1 << 12)
#define GEN8_FF_DOP_CLOCK_GATE_DISABLE (1<<10)
/* Fuse readout registers for GT */
#define CHV_FUSE_GT (VLV_DISPLAY_BASE + 0x2168)
#define CHV_FGT_EU_DIS_SS0_R0_SHIFT 16
#define CHV_FGT_EU_DIS_SS0_R0_MASK (0xf << CHV_FGT_EU_DIS_SS0_R0_SHIFT)
#define CHV_FGT_EU_DIS_SS0_R1_SHIFT 20
#define CHV_FGT_EU_DIS_SS0_R1_MASK (0xf << CHV_FGT_EU_DIS_SS0_R1_SHIFT)
#define CHV_FGT_EU_DIS_SS1_R0_SHIFT 24
#define CHV_FGT_EU_DIS_SS1_R0_MASK (0xf << CHV_FGT_EU_DIS_SS1_R0_SHIFT)
#define CHV_FGT_EU_DIS_SS1_R1_SHIFT 28
#define CHV_FGT_EU_DIS_SS1_R1_MASK (0xf << CHV_FGT_EU_DIS_SS1_R1_SHIFT)
#define GEN6_BSD_SLEEP_PSMI_CONTROL 0x12050
#define GEN6_BSD_SLEEP_MSG_DISABLE (1 << 0)
#define GEN6_BSD_SLEEP_FLUSH_DISABLE (1 << 2)