We need to do this early on before the E820 map is modified or
conflicting resources assigned on top.
---
arch/x86/kernel/early-quirks.c | 91 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 91 insertions(+)
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 94ab6b9..6017e45 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -208,6 +208,95 @@ static void __init intel_remapping_check(int num, int slot, int func)
}
+static const struct pci_device_id gen3_method_ids[] = {
+ INTEL_I830_IDS(NULL),
+ INTEL_I845G_IDS(NULL),
+ INTEL_I85X_IDS(NULL),
+ INTEL_I865G_IDS(NULL),
+ INTEL_I915G_IDS(NULL),
+ INTEL_I915GM_IDS(NULL),
+ INTEL_I945G_IDS(NULL),
+ INTEL_I945GM_IDS(NULL),
+ INTEL_VLV_M_IDS(NULL),
+ INTEL_VLV_D_IDS(NULL),
+ INTEL_PINEVIEW_IDS(NULL),
+};
+static const struct pci_device_id gen4_method_ids[] = {
+ INTEL_I965G_IDS(NULL),
+ INTEL_G33_IDS(NULL),
+ INTEL_I965GM_IDS(NULL),
+ INTEL_GM45_IDS(NULL),
+ INTEL_G45_IDS(NULL),
+ INTEL_IRONLAKE_D_IDS(NULL),
+ INTEL_IRONLAKE_M_IDS(NULL),
+};
+static const struct pci_device_id gen6_method_ids[] = {
+ INTEL_SNB_D_IDS(NULL),
+ INTEL_SNB_M_IDS(NULL),
+ INTEL_IVB_M_IDS(NULL),
+ INTEL_IVB_D_IDS(NULL),
+ INTEL_IVB_Q_IDS(NULL),
+ INTEL_HSW_D_IDS(NULL),
+ INTEL_HSW_M_IDS(NULL),
+};
+
+static void __init intel_gen3_method(int num, int slot, int func,
+ u32 *start, size_t *size)
+{
+}
+
+static void __init intel_gen4_method(int num, int slot, int func,
+ u32 *start, size_t *size)
+{
+}
+
+static void __init intel_gen6_method(int num, int slot, int func,
+ u32 *start, size_t *size)
+{
+}
+
+static void __init intel_graphics_stolen(int num, int slot, int func)
+{
+ size_t size;
+ int i;
+ u32 start;
+ u16 device, subvendor, subdevice;
+
+ device = read_pci_config_word(num, slot, func, PCI_DEVICE_ID);
+ subvendor = read_pci_config_word(num, slot, func, PCI_SUBVENDOR_ID);
+ subdevice = read_pci_config_word(num, slot, func, PCI_SUBDEVICE_ID);
+
+ for (i = 0; i < ARRAY_SIZE(gen3_method_ids); i++) {
+ if (gen3_method_ids[i].device == device) {
+ intel_gen3_method(num, slot, func, &start, &size);
+ goto found;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(gen4_method_ids); i++) {
+ if (gen4_method_ids[i].device == device) {
+ intel_gen4_method(num, slot, func, &start, &size);
+ goto found;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(gen6_method_ids); i++) {
+ if (gen6_method_ids[i].device == device &&
+ (gen6_method_ids[i].subvendor == PCI_ANY_ID ||
+ gen6_method_ids[i].subvendor == subvendor) &&
+ (gen6_method_ids[i].subdevice == PCI_ANY_ID ||
+ gen6_method_ids[i].subdevce == subdevice)) {
+ intel_gen6_method(num, slot, func, &start, &size);
+ goto found;
+ }
+ }
+
+ /* No match, don't bother reserving */
+ return;
+found:
+ /* Mark this space as reserved */
+}
+
#define QFLAG_APPLY_ONCE 0x1
#define QFLAG_APPLIED 0x2
#define QFLAG_DONE (QFLAG_APPLY_ONCE|QFLAG_APPLIED)
@@ -241,6 +330,8 @@ static struct chipset early_qrk[] __initdata = {
PCI_BASE_CLASS_BRIDGE, 0, intel_remapping_check },
{ PCI_VENDOR_ID_INTEL, 0x3406, PCI_CLASS_BRIDGE_HOST,
PCI_BASE_CLASS_BRIDGE, 0, intel_remapping_check },
+ { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_CLASS_DISPLAY, PCI_ANY_ID,
+ QFLAG_APPLY_ONCE, intel_graphics_stolen }
{}
};
--
1.7.9.5
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