diff options
Diffstat (limited to 'drivers/gpu/drm/i915/soc/intel_dram.c')
| -rw-r--r-- | drivers/gpu/drm/i915/soc/intel_dram.c | 216 |
1 files changed, 132 insertions, 84 deletions
diff --git a/drivers/gpu/drm/i915/soc/intel_dram.c b/drivers/gpu/drm/i915/soc/intel_dram.c index e3287f1de774..4aba47bccc63 100644 --- a/drivers/gpu/drm/i915/soc/intel_dram.c +++ b/drivers/gpu/drm/i915/soc/intel_dram.c @@ -43,101 +43,51 @@ static const char *intel_dram_type_str(enum intel_dram_type type) #undef DRAM_TYPE_STR -static void pnv_detect_mem_freq(struct drm_i915_private *dev_priv) +static bool pnv_is_ddr3(struct drm_i915_private *i915) +{ + return intel_uncore_read(&i915->uncore, CSHRDDR3CTL) & CSHRDDR3CTL_DDR3; +} + +static unsigned int pnv_mem_freq(struct drm_i915_private *dev_priv) { u32 tmp; tmp = intel_uncore_read(&dev_priv->uncore, CLKCFG); - switch (tmp & CLKCFG_FSB_MASK) { - case CLKCFG_FSB_533: - dev_priv->fsb_freq = 533; /* 133*4 */ - break; - case CLKCFG_FSB_800: - dev_priv->fsb_freq = 800; /* 200*4 */ - break; - case CLKCFG_FSB_667: - dev_priv->fsb_freq = 667; /* 167*4 */ - break; - case CLKCFG_FSB_400: - dev_priv->fsb_freq = 400; /* 100*4 */ - break; - } - switch (tmp & CLKCFG_MEM_MASK) { case CLKCFG_MEM_533: - dev_priv->mem_freq = 533; - break; + return 533333; case CLKCFG_MEM_667: - dev_priv->mem_freq = 667; - break; + return 666667; case CLKCFG_MEM_800: - dev_priv->mem_freq = 800; - break; + return 800000; } - /* detect pineview DDR3 setting */ - tmp = intel_uncore_read(&dev_priv->uncore, CSHRDDR3CTL); - dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; + return 0; } -static void ilk_detect_mem_freq(struct drm_i915_private *dev_priv) +static unsigned int ilk_mem_freq(struct drm_i915_private *dev_priv) { - u16 ddrpll, csipll; + u16 ddrpll; ddrpll = intel_uncore_read16(&dev_priv->uncore, DDRMPLL1); switch (ddrpll & 0xff) { case 0xc: - dev_priv->mem_freq = 800; - break; + return 800000; case 0x10: - dev_priv->mem_freq = 1066; - break; + return 1066667; case 0x14: - dev_priv->mem_freq = 1333; - break; + return 1333333; case 0x18: - dev_priv->mem_freq = 1600; - break; + return 1600000; default: drm_dbg(&dev_priv->drm, "unknown memory frequency 0x%02x\n", ddrpll & 0xff); - dev_priv->mem_freq = 0; - break; - } - - csipll = intel_uncore_read16(&dev_priv->uncore, CSIPLL0); - switch (csipll & 0x3ff) { - case 0x00c: - dev_priv->fsb_freq = 3200; - break; - case 0x00e: - dev_priv->fsb_freq = 3733; - break; - case 0x010: - dev_priv->fsb_freq = 4266; - break; - case 0x012: - dev_priv->fsb_freq = 4800; - break; - case 0x014: - dev_priv->fsb_freq = 5333; - break; - case 0x016: - dev_priv->fsb_freq = 5866; - break; - case 0x018: - dev_priv->fsb_freq = 6400; - break; - default: - drm_dbg(&dev_priv->drm, "unknown fsb frequency 0x%04x\n", - csipll & 0x3ff); - dev_priv->fsb_freq = 0; - break; + return 0; } } -static void chv_detect_mem_freq(struct drm_i915_private *i915) +static unsigned int chv_mem_freq(struct drm_i915_private *i915) { u32 val; @@ -147,15 +97,13 @@ static void chv_detect_mem_freq(struct drm_i915_private *i915) switch ((val >> 2) & 0x7) { case 3: - i915->mem_freq = 2000; - break; + return 2000000; default: - i915->mem_freq = 1600; - break; + return 1600000; } } -static void vlv_detect_mem_freq(struct drm_i915_private *i915) +static unsigned int vlv_mem_freq(struct drm_i915_private *i915) { u32 val; @@ -166,30 +114,125 @@ static void vlv_detect_mem_freq(struct drm_i915_private *i915) switch ((val >> 6) & 3) { case 0: case 1: - i915->mem_freq = 800; - break; + return 800000; case 2: - i915->mem_freq = 1066; - break; + return 1066667; case 3: - i915->mem_freq = 1333; - break; + return 1333333; } + + return 0; } static void detect_mem_freq(struct drm_i915_private *i915) { if (IS_PINEVIEW(i915)) - pnv_detect_mem_freq(i915); + i915->mem_freq = pnv_mem_freq(i915); else if (GRAPHICS_VER(i915) == 5) - ilk_detect_mem_freq(i915); + i915->mem_freq = ilk_mem_freq(i915); else if (IS_CHERRYVIEW(i915)) - chv_detect_mem_freq(i915); + i915->mem_freq = chv_mem_freq(i915); else if (IS_VALLEYVIEW(i915)) - vlv_detect_mem_freq(i915); + i915->mem_freq = vlv_mem_freq(i915); + + if (IS_PINEVIEW(i915)) + i915->is_ddr3 = pnv_is_ddr3(i915); if (i915->mem_freq) - drm_dbg(&i915->drm, "DDR speed: %d MHz\n", i915->mem_freq); + drm_dbg(&i915->drm, "DDR speed: %d kHz\n", i915->mem_freq); +} + +unsigned int i9xx_fsb_freq(struct drm_i915_private *i915) +{ + u32 fsb; + + /* + * Note that this only reads the state of the FSB + * straps, not the actual FSB frequency. Some BIOSen + * let you configure each independently. Ideally we'd + * read out the actual FSB frequency but sadly we + * don't know which registers have that information, + * and all the relevant docs have gone to bit heaven :( + */ + fsb = intel_uncore_read(&i915->uncore, CLKCFG) & CLKCFG_FSB_MASK; + + if (IS_PINEVIEW(i915) || IS_MOBILE(i915)) { + switch (fsb) { + case CLKCFG_FSB_400: + return 400000; + case CLKCFG_FSB_533: + return 533333; + case CLKCFG_FSB_667: + return 666667; + case CLKCFG_FSB_800: + return 800000; + case CLKCFG_FSB_1067: + return 1066667; + case CLKCFG_FSB_1333: + return 1333333; + default: + MISSING_CASE(fsb); + return 1333333; + } + } else { + switch (fsb) { + case CLKCFG_FSB_400_ALT: + return 400000; + case CLKCFG_FSB_533: + return 533333; + case CLKCFG_FSB_667: + return 666667; + case CLKCFG_FSB_800: + return 800000; + case CLKCFG_FSB_1067_ALT: + return 1066667; + case CLKCFG_FSB_1333_ALT: + return 1333333; + case CLKCFG_FSB_1600_ALT: + return 1600000; + default: + MISSING_CASE(fsb); + return 1333333; + } + } +} + +static unsigned int ilk_fsb_freq(struct drm_i915_private *dev_priv) +{ + u16 fsb; + + fsb = intel_uncore_read16(&dev_priv->uncore, CSIPLL0) & 0x3ff; + + switch (fsb) { + case 0x00c: + return 3200000; + case 0x00e: + return 3733333; + case 0x010: + return 4266667; + case 0x012: + return 4800000; + case 0x014: + return 5333333; + case 0x016: + return 5866667; + case 0x018: + return 6400000; + default: + drm_dbg(&dev_priv->drm, "unknown fsb frequency 0x%04x\n", fsb); + return 0; + } +} + +static void detect_fsb_freq(struct drm_i915_private *i915) +{ + if (GRAPHICS_VER(i915) == 5) + i915->fsb_freq = ilk_fsb_freq(i915); + else if (GRAPHICS_VER(i915) == 3 || GRAPHICS_VER(i915) == 4) + i915->fsb_freq = i9xx_fsb_freq(i915); + + if (i915->fsb_freq) + drm_dbg(&i915->drm, "FSB frequency: %d kHz\n", i915->fsb_freq); } static int intel_dimm_num_devices(const struct dram_dimm_info *dimm) @@ -640,6 +683,10 @@ static int xelpdp_get_dram_info(struct drm_i915_private *i915) case 5: dram_info->type = INTEL_DRAM_LPDDR3; break; + case 8: + drm_WARN_ON(&i915->drm, !IS_DGFX(i915)); + dram_info->type = INTEL_DRAM_GDDR; + break; default: MISSING_CASE(val); return -EINVAL; @@ -657,6 +704,7 @@ void intel_dram_detect(struct drm_i915_private *i915) struct dram_info *dram_info = &i915->dram_info; int ret; + detect_fsb_freq(i915); detect_mem_freq(i915); if (GRAPHICS_VER(i915) < 9 || IS_DG2(i915) || !HAS_DISPLAY(i915)) |