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| author | Zhenyu Wang <zhenyuw@linux.intel.com> | 2009-11-11 01:25:25 +0800 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-02-26 13:23:19 -0800 |
| commit | 14bc490bbdf1b194ad1f5f3d2a0a27edfdf78986 (patch) | |
| tree | ec3aa6b118d7f9750bdb12e45af122748978a6d6 /drivers/char/agp/intel-agp.c | |
| parent | 21099537dbacc5c8999d833e6bfd1b72edd89189 (diff) | |
| download | linux-rt-14bc490bbdf1b194ad1f5f3d2a0a27edfdf78986.tar.gz | |
drm/i915, agp/intel: Fix stolen memory size on Sandybridge
New memory control config reg at 0x50 should be used for stolen
memory size detection on Sandybridge.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/char/agp/intel-agp.c')
| -rw-r--r-- | drivers/char/agp/intel-agp.c | 78 |
1 files changed, 74 insertions, 4 deletions
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index c3c870bf5678..9a551bc34c39 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -150,6 +150,25 @@ extern int agp_memory_reserved; #define INTEL_I7505_AGPCTRL 0x70 #define INTEL_I7505_MCHCFG 0x50 +#define SNB_GMCH_CTRL 0x50 +#define SNB_GMCH_GMS_STOLEN_MASK 0xF8 +#define SNB_GMCH_GMS_STOLEN_32M (1 << 3) +#define SNB_GMCH_GMS_STOLEN_64M (2 << 3) +#define SNB_GMCH_GMS_STOLEN_96M (3 << 3) +#define SNB_GMCH_GMS_STOLEN_128M (4 << 3) +#define SNB_GMCH_GMS_STOLEN_160M (5 << 3) +#define SNB_GMCH_GMS_STOLEN_192M (6 << 3) +#define SNB_GMCH_GMS_STOLEN_224M (7 << 3) +#define SNB_GMCH_GMS_STOLEN_256M (8 << 3) +#define SNB_GMCH_GMS_STOLEN_288M (9 << 3) +#define SNB_GMCH_GMS_STOLEN_320M (0xa << 3) +#define SNB_GMCH_GMS_STOLEN_352M (0xb << 3) +#define SNB_GMCH_GMS_STOLEN_384M (0xc << 3) +#define SNB_GMCH_GMS_STOLEN_416M (0xd << 3) +#define SNB_GMCH_GMS_STOLEN_448M (0xe << 3) +#define SNB_GMCH_GMS_STOLEN_480M (0xf << 3) +#define SNB_GMCH_GMS_STOLEN_512M (0x10 << 3) + static const struct aper_size_info_fixed intel_i810_sizes[] = { {64, 16384, 4}, @@ -621,7 +640,7 @@ static struct aper_size_info_fixed intel_i830_sizes[] = static void intel_i830_init_gtt_entries(void) { u16 gmch_ctrl; - int gtt_entries; + int gtt_entries = 0; u8 rdct; int local = 0; static const int ddt[4] = { 0, 16, 32, 64 }; @@ -715,10 +734,61 @@ static void intel_i830_init_gtt_entries(void) } } else if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB) { - /* XXX: This is what my A1 silicon has. What's the right - * answer? + /* + * SandyBridge has new memory control reg at 0x50.w */ - gtt_entries = MB(64) - KB(size); + u16 snb_gmch_ctl; + pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl); + switch (snb_gmch_ctl & SNB_GMCH_GMS_STOLEN_MASK) { + case SNB_GMCH_GMS_STOLEN_32M: + gtt_entries = MB(32) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_64M: + gtt_entries = MB(64) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_96M: + gtt_entries = MB(96) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_128M: + gtt_entries = MB(128) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_160M: + gtt_entries = MB(160) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_192M: + gtt_entries = MB(192) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_224M: + gtt_entries = MB(224) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_256M: + gtt_entries = MB(256) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_288M: + gtt_entries = MB(288) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_320M: + gtt_entries = MB(320) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_352M: + gtt_entries = MB(352) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_384M: + gtt_entries = MB(384) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_416M: + gtt_entries = MB(416) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_448M: + gtt_entries = MB(448) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_480M: + gtt_entries = MB(480) - KB(size); + break; + case SNB_GMCH_GMS_STOLEN_512M: + gtt_entries = MB(512) - KB(size); + break; + } } else { switch (gmch_ctrl & I855_GMCH_GMS_MASK) { case I855_GMCH_GMS_STOLEN_1M: |