path: root/arch/x86/kernel/early-quirks.c
diff options
authorBen Widawsky <benjamin.widawsky@intel.com>2013-11-04 00:53:55 (GMT)
committerDaniel Vetter <daniel.vetter@ffwll.ch>2013-11-08 17:09:39 (GMT)
commit9459d252378aea80d28dc12bfec9a0d31b2a61bf (patch)
treeaf6ebccd4074194aa16d836bd2508591dac57851 /arch/x86/kernel/early-quirks.c
parent4e0bbc316ef2a7d804cef3e0247fd782382f5bd4 (diff)
drm/i915/bdw: support GMS and GGMS changes
All the BARs have the ability to grow. v2: Pulled out the simulator workaround to a separate patch. Rebased. v3: Rebase onto latest vlv patches from Jesse. v4: Rebased on top of the early stolen quirk patch from Jesse. v5: Use the new macro names. s/INTEL_BDW_PCI_IDS_D/INTEL_BDW_D_IDS s/INTEL_BDW_PCI_IDS_M/INTEL_BDW_M_IDS It's Jesse's fault for not following the convention I originally set. Cc: Ingo Molnar <mingo@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'arch/x86/kernel/early-quirks.c')
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index b3cd3eb..96f958d 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -313,6 +313,16 @@ static size_t __init gen6_stolen_size(int num, int slot, int func)
return gmch_ctrl << 25; /* 32 MB units */
+static inline size_t gen8_stolen_size(int num, int slot, int func)
+ u16 gmch_ctrl;
+ gmch_ctrl = read_pci_config_16(num, slot, func, SNB_GMCH_CTRL);
+ gmch_ctrl >>= BDW_GMCH_GMS_SHIFT;
+ gmch_ctrl &= BDW_GMCH_GMS_MASK;
+ return gmch_ctrl << 25; /* 32 MB units */
typedef size_t (*stolen_size_fn)(int num, int slot, int func);
static struct pci_device_id intel_stolen_ids[] __initdata = {
@@ -336,6 +346,8 @@ static struct pci_device_id intel_stolen_ids[] __initdata = {
+ INTEL_BDW_M_IDS(gen8_stolen_size),
+ INTEL_BDW_D_IDS(gen8_stolen_size)
static void __init intel_graphics_stolen(int num, int slot, int func)

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