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-rw-r--r--arch/x86/kernel/early-quirks.c509
1 files changed, 286 insertions, 223 deletions
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index bca14c899137..de7501edb21c 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -11,7 +11,11 @@
#include <linux/pci.h>
#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/dmi.h>
#include <linux/pci_ids.h>
+#include <linux/bcma/bcma.h>
+#include <linux/bcma/bcma_regs.h>
#include <drm/i915_drm.h>
#include <asm/pci-direct.h>
#include <asm/dma.h>
@@ -21,6 +25,9 @@
#include <asm/iommu.h>
#include <asm/gart.h>
#include <asm/irq_remapping.h>
+#include <asm/early_ioremap.h>
+
+#define dev_err(msg) pr_err("pci 0000:%02x:%02x.%d: %s", bus, slot, func, msg)
static void __init fix_hypertransport_config(int num, int slot, int func)
{
@@ -76,6 +83,13 @@ static void __init nvidia_bugs(int num, int slot, int func)
#ifdef CONFIG_ACPI
#ifdef CONFIG_X86_IO_APIC
/*
+ * Only applies to Nvidia root ports (bus 0) and not to
+ * Nvidia graphics cards with PCI ports on secondary buses.
+ */
+ if (num)
+ return;
+
+ /*
* All timer overrides on Nvidia are
* wrong unless HPET is enabled.
* Unfortunately that's not true on many Asus boards.
@@ -223,36 +237,19 @@ static void __init intel_remapping_check(int num, int slot, int func)
* despite the efforts of the "RAM buffer" approach, which simply rounds
* memory boundaries up to 64M to try to catch space that may decode
* as RAM and so is not suitable for MMIO.
- *
- * And yes, so far on current devices the base addr is always under 4G.
*/
-static u32 __init intel_stolen_base(int num, int slot, int func, size_t stolen_size)
-{
- u32 base;
-
- /*
- * For the PCI IDs in this quirk, the stolen base is always
- * in 0x5c, aka the BDSM register (yes that's really what
- * it's called).
- */
- base = read_pci_config(num, slot, func, 0x5c);
- base &= ~((1<<20) - 1);
-
- return base;
-}
#define KB(x) ((x) * 1024UL)
#define MB(x) (KB (KB (x)))
-#define GB(x) (MB (KB (x)))
static size_t __init i830_tseg_size(void)
{
- u8 tmp = read_pci_config_byte(0, 0, 0, I830_ESMRAMC);
+ u8 esmramc = read_pci_config_byte(0, 0, 0, I830_ESMRAMC);
- if (!(tmp & TSEG_ENABLE))
+ if (!(esmramc & TSEG_ENABLE))
return 0;
- if (tmp & I830_TSEG_SIZE_1M)
+ if (esmramc & I830_TSEG_SIZE_1M)
return MB(1);
else
return KB(512);
@@ -260,27 +257,26 @@ static size_t __init i830_tseg_size(void)
static size_t __init i845_tseg_size(void)
{
- u8 tmp = read_pci_config_byte(0, 0, 0, I845_ESMRAMC);
+ u8 esmramc = read_pci_config_byte(0, 0, 0, I845_ESMRAMC);
+ u8 tseg_size = esmramc & I845_TSEG_SIZE_MASK;
- if (!(tmp & TSEG_ENABLE))
+ if (!(esmramc & TSEG_ENABLE))
return 0;
- switch (tmp & I845_TSEG_SIZE_MASK) {
- case I845_TSEG_SIZE_512K:
- return KB(512);
- case I845_TSEG_SIZE_1M:
- return MB(1);
+ switch (tseg_size) {
+ case I845_TSEG_SIZE_512K: return KB(512);
+ case I845_TSEG_SIZE_1M: return MB(1);
default:
- WARN_ON(1);
- return 0;
+ WARN(1, "Unknown ESMRAMC value: %x!\n", esmramc);
}
+ return 0;
}
static size_t __init i85x_tseg_size(void)
{
- u8 tmp = read_pci_config_byte(0, 0, 0, I85X_ESMRAMC);
+ u8 esmramc = read_pci_config_byte(0, 0, 0, I85X_ESMRAMC);
- if (!(tmp & TSEG_ENABLE))
+ if (!(esmramc & TSEG_ENABLE))
return 0;
return MB(1);
@@ -300,285 +296,287 @@ static size_t __init i85x_mem_size(void)
* On 830/845/85x the stolen memory base isn't available in any
* register. We need to calculate it as TOM-TSEG_SIZE-stolen_size.
*/
-static u32 __init i830_stolen_base(int num, int slot, int func, size_t stolen_size)
+static phys_addr_t __init i830_stolen_base(int num, int slot, int func,
+ size_t stolen_size)
{
- return i830_mem_size() - i830_tseg_size() - stolen_size;
+ return (phys_addr_t)i830_mem_size() - i830_tseg_size() - stolen_size;
}
-static u32 __init i845_stolen_base(int num, int slot, int func, size_t stolen_size)
+static phys_addr_t __init i845_stolen_base(int num, int slot, int func,
+ size_t stolen_size)
{
- return i830_mem_size() - i845_tseg_size() - stolen_size;
+ return (phys_addr_t)i830_mem_size() - i845_tseg_size() - stolen_size;
}
-static u32 __init i85x_stolen_base(int num, int slot, int func, size_t stolen_size)
+static phys_addr_t __init i85x_stolen_base(int num, int slot, int func,
+ size_t stolen_size)
{
- return i85x_mem_size() - i85x_tseg_size() - stolen_size;
+ return (phys_addr_t)i85x_mem_size() - i85x_tseg_size() - stolen_size;
}
-static u32 __init i865_stolen_base(int num, int slot, int func, size_t stolen_size)
+static phys_addr_t __init i865_stolen_base(int num, int slot, int func,
+ size_t stolen_size)
{
+ u16 toud;
+
/*
* FIXME is the graphics stolen memory region
* always at TOUD? Ie. is it always the last
* one to be allocated by the BIOS?
*/
- return read_pci_config_16(0, 0, 0, I865_TOUD) << 16;
+ toud = read_pci_config_16(0, 0, 0, I865_TOUD);
+
+ return (phys_addr_t)toud << 16;
+}
+
+static phys_addr_t __init gen3_stolen_base(int num, int slot, int func,
+ size_t stolen_size)
+{
+ u32 bsm;
+
+ /* Almost universally we can find the Graphics Base of Stolen Memory
+ * at register BSM (0x5c) in the igfx configuration space. On a few
+ * (desktop) machines this is also mirrored in the bridge device at
+ * different locations, or in the MCHBAR.
+ */
+ bsm = read_pci_config(num, slot, func, INTEL_BSM);
+
+ return (phys_addr_t)bsm & INTEL_BSM_MASK;
}
static size_t __init i830_stolen_size(int num, int slot, int func)
{
- size_t stolen_size;
u16 gmch_ctrl;
+ u16 gms;
gmch_ctrl = read_pci_config_16(0, 0, 0, I830_GMCH_CTRL);
-
- switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
- case I830_GMCH_GMS_STOLEN_512:
- stolen_size = KB(512);
- break;
- case I830_GMCH_GMS_STOLEN_1024:
- stolen_size = MB(1);
- break;
- case I830_GMCH_GMS_STOLEN_8192:
- stolen_size = MB(8);
- break;
- case I830_GMCH_GMS_LOCAL:
- /* local memory isn't part of the normal address space */
- stolen_size = 0;
- break;
+ gms = gmch_ctrl & I830_GMCH_GMS_MASK;
+
+ switch (gms) {
+ case I830_GMCH_GMS_STOLEN_512: return KB(512);
+ case I830_GMCH_GMS_STOLEN_1024: return MB(1);
+ case I830_GMCH_GMS_STOLEN_8192: return MB(8);
+ /* local memory isn't part of the normal address space */
+ case I830_GMCH_GMS_LOCAL: return 0;
default:
- return 0;
+ WARN(1, "Unknown GMCH_CTRL value: %x!\n", gmch_ctrl);
}
- return stolen_size;
+ return 0;
}
static size_t __init gen3_stolen_size(int num, int slot, int func)
{
- size_t stolen_size;
u16 gmch_ctrl;
+ u16 gms;
gmch_ctrl = read_pci_config_16(0, 0, 0, I830_GMCH_CTRL);
-
- switch (gmch_ctrl & I855_GMCH_GMS_MASK) {
- case I855_GMCH_GMS_STOLEN_1M:
- stolen_size = MB(1);
- break;
- case I855_GMCH_GMS_STOLEN_4M:
- stolen_size = MB(4);
- break;
- case I855_GMCH_GMS_STOLEN_8M:
- stolen_size = MB(8);
- break;
- case I855_GMCH_GMS_STOLEN_16M:
- stolen_size = MB(16);
- break;
- case I855_GMCH_GMS_STOLEN_32M:
- stolen_size = MB(32);
- break;
- case I915_GMCH_GMS_STOLEN_48M:
- stolen_size = MB(48);
- break;
- case I915_GMCH_GMS_STOLEN_64M:
- stolen_size = MB(64);
- break;
- case G33_GMCH_GMS_STOLEN_128M:
- stolen_size = MB(128);
- break;
- case G33_GMCH_GMS_STOLEN_256M:
- stolen_size = MB(256);
- break;
- case INTEL_GMCH_GMS_STOLEN_96M:
- stolen_size = MB(96);
- break;
- case INTEL_GMCH_GMS_STOLEN_160M:
- stolen_size = MB(160);
- break;
- case INTEL_GMCH_GMS_STOLEN_224M:
- stolen_size = MB(224);
- break;
- case INTEL_GMCH_GMS_STOLEN_352M:
- stolen_size = MB(352);
- break;
+ gms = gmch_ctrl & I855_GMCH_GMS_MASK;
+
+ switch (gms) {
+ case I855_GMCH_GMS_STOLEN_1M: return MB(1);
+ case I855_GMCH_GMS_STOLEN_4M: return MB(4);
+ case I855_GMCH_GMS_STOLEN_8M: return MB(8);
+ case I855_GMCH_GMS_STOLEN_16M: return MB(16);
+ case I855_GMCH_GMS_STOLEN_32M: return MB(32);
+ case I915_GMCH_GMS_STOLEN_48M: return MB(48);
+ case I915_GMCH_GMS_STOLEN_64M: return MB(64);
+ case G33_GMCH_GMS_STOLEN_128M: return MB(128);
+ case G33_GMCH_GMS_STOLEN_256M: return MB(256);
+ case INTEL_GMCH_GMS_STOLEN_96M: return MB(96);
+ case INTEL_GMCH_GMS_STOLEN_160M:return MB(160);
+ case INTEL_GMCH_GMS_STOLEN_224M:return MB(224);
+ case INTEL_GMCH_GMS_STOLEN_352M:return MB(352);
default:
- stolen_size = 0;
- break;
+ WARN(1, "Unknown GMCH_CTRL value: %x!\n", gmch_ctrl);
}
- return stolen_size;
+ return 0;
}
static size_t __init gen6_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
+ u16 gms;
gmch_ctrl = read_pci_config_16(num, slot, func, SNB_GMCH_CTRL);
- gmch_ctrl >>= SNB_GMCH_GMS_SHIFT;
- gmch_ctrl &= SNB_GMCH_GMS_MASK;
+ gms = (gmch_ctrl >> SNB_GMCH_GMS_SHIFT) & SNB_GMCH_GMS_MASK;
- return gmch_ctrl << 25; /* 32 MB units */
+ return (size_t)gms * MB(32);
}
static size_t __init gen8_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
+ u16 gms;
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 */
+ gms = (gmch_ctrl >> BDW_GMCH_GMS_SHIFT) & BDW_GMCH_GMS_MASK;
+
+ return (size_t)gms * MB(32);
}
static size_t __init chv_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
+ u16 gms;
gmch_ctrl = read_pci_config_16(num, slot, func, SNB_GMCH_CTRL);
- gmch_ctrl >>= SNB_GMCH_GMS_SHIFT;
- gmch_ctrl &= SNB_GMCH_GMS_MASK;
+ gms = (gmch_ctrl >> SNB_GMCH_GMS_SHIFT) & SNB_GMCH_GMS_MASK;
/*
* 0x0 to 0x10: 32MB increments starting at 0MB
* 0x11 to 0x16: 4MB increments starting at 8MB
* 0x17 to 0x1d: 4MB increments start at 36MB
*/
- if (gmch_ctrl < 0x11)
- return gmch_ctrl << 25;
- else if (gmch_ctrl < 0x17)
- return (gmch_ctrl - 0x11 + 2) << 22;
+ if (gms < 0x11)
+ return (size_t)gms * MB(32);
+ else if (gms < 0x17)
+ return (size_t)(gms - 0x11 + 2) * MB(4);
else
- return (gmch_ctrl - 0x17 + 9) << 22;
+ return (size_t)(gms - 0x17 + 9) * MB(4);
}
-struct intel_stolen_funcs {
- size_t (*size)(int num, int slot, int func);
- u32 (*base)(int num, int slot, int func, size_t size);
-};
-
static size_t __init gen9_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
+ u16 gms;
gmch_ctrl = read_pci_config_16(num, slot, func, SNB_GMCH_CTRL);
- gmch_ctrl >>= BDW_GMCH_GMS_SHIFT;
- gmch_ctrl &= BDW_GMCH_GMS_MASK;
+ gms = (gmch_ctrl >> BDW_GMCH_GMS_SHIFT) & BDW_GMCH_GMS_MASK;
- if (gmch_ctrl < 0xf0)
- return gmch_ctrl << 25; /* 32 MB units */
+ /* 0x0 to 0xef: 32MB increments starting at 0MB */
+ /* 0xf0 to 0xfe: 4MB increments starting at 4MB */
+ if (gms < 0xf0)
+ return (size_t)gms * MB(32);
else
- /* 4MB increments starting at 0xf0 for 4MB */
- return (gmch_ctrl - 0xf0 + 1) << 22;
+ return (size_t)(gms - 0xf0 + 1) * MB(4);
}
-typedef size_t (*stolen_size_fn)(int num, int slot, int func);
+struct intel_early_ops {
+ size_t (*stolen_size)(int num, int slot, int func);
+ phys_addr_t (*stolen_base)(int num, int slot, int func, size_t size);
+};
-static const struct intel_stolen_funcs i830_stolen_funcs __initconst = {
- .base = i830_stolen_base,
- .size = i830_stolen_size,
+static const struct intel_early_ops i830_early_ops __initconst = {
+ .stolen_base = i830_stolen_base,
+ .stolen_size = i830_stolen_size,
};
-static const struct intel_stolen_funcs i845_stolen_funcs __initconst = {
- .base = i845_stolen_base,
- .size = i830_stolen_size,
+static const struct intel_early_ops i845_early_ops __initconst = {
+ .stolen_base = i845_stolen_base,
+ .stolen_size = i830_stolen_size,
};
-static const struct intel_stolen_funcs i85x_stolen_funcs __initconst = {
- .base = i85x_stolen_base,
- .size = gen3_stolen_size,
+static const struct intel_early_ops i85x_early_ops __initconst = {
+ .stolen_base = i85x_stolen_base,
+ .stolen_size = gen3_stolen_size,
};
-static const struct intel_stolen_funcs i865_stolen_funcs __initconst = {
- .base = i865_stolen_base,
- .size = gen3_stolen_size,
+static const struct intel_early_ops i865_early_ops __initconst = {
+ .stolen_base = i865_stolen_base,
+ .stolen_size = gen3_stolen_size,
};
-static const struct intel_stolen_funcs gen3_stolen_funcs __initconst = {
- .base = intel_stolen_base,
- .size = gen3_stolen_size,
+static const struct intel_early_ops gen3_early_ops __initconst = {
+ .stolen_base = gen3_stolen_base,
+ .stolen_size = gen3_stolen_size,
};
-static const struct intel_stolen_funcs gen6_stolen_funcs __initconst = {
- .base = intel_stolen_base,
- .size = gen6_stolen_size,
+static const struct intel_early_ops gen6_early_ops __initconst = {
+ .stolen_base = gen3_stolen_base,
+ .stolen_size = gen6_stolen_size,
};
-static const struct intel_stolen_funcs gen8_stolen_funcs __initconst = {
- .base = intel_stolen_base,
- .size = gen8_stolen_size,
+static const struct intel_early_ops gen8_early_ops __initconst = {
+ .stolen_base = gen3_stolen_base,
+ .stolen_size = gen8_stolen_size,
};
-static const struct intel_stolen_funcs gen9_stolen_funcs __initconst = {
- .base = intel_stolen_base,
- .size = gen9_stolen_size,
+static const struct intel_early_ops gen9_early_ops __initconst = {
+ .stolen_base = gen3_stolen_base,
+ .stolen_size = gen9_stolen_size,
};
-static const struct intel_stolen_funcs chv_stolen_funcs __initconst = {
- .base = intel_stolen_base,
- .size = chv_stolen_size,
+static const struct intel_early_ops chv_early_ops __initconst = {
+ .stolen_base = gen3_stolen_base,
+ .stolen_size = chv_stolen_size,
};
-static const struct pci_device_id intel_stolen_ids[] __initconst = {
- INTEL_I830_IDS(&i830_stolen_funcs),
- INTEL_I845G_IDS(&i845_stolen_funcs),
- INTEL_I85X_IDS(&i85x_stolen_funcs),
- INTEL_I865G_IDS(&i865_stolen_funcs),
- INTEL_I915G_IDS(&gen3_stolen_funcs),
- INTEL_I915GM_IDS(&gen3_stolen_funcs),
- INTEL_I945G_IDS(&gen3_stolen_funcs),
- INTEL_I945GM_IDS(&gen3_stolen_funcs),
- INTEL_VLV_M_IDS(&gen6_stolen_funcs),
- INTEL_VLV_D_IDS(&gen6_stolen_funcs),
- INTEL_PINEVIEW_IDS(&gen3_stolen_funcs),
- INTEL_I965G_IDS(&gen3_stolen_funcs),
- INTEL_G33_IDS(&gen3_stolen_funcs),
- INTEL_I965GM_IDS(&gen3_stolen_funcs),
- INTEL_GM45_IDS(&gen3_stolen_funcs),
- INTEL_G45_IDS(&gen3_stolen_funcs),
- INTEL_IRONLAKE_D_IDS(&gen3_stolen_funcs),
- INTEL_IRONLAKE_M_IDS(&gen3_stolen_funcs),
- INTEL_SNB_D_IDS(&gen6_stolen_funcs),
- INTEL_SNB_M_IDS(&gen6_stolen_funcs),
- INTEL_IVB_M_IDS(&gen6_stolen_funcs),
- INTEL_IVB_D_IDS(&gen6_stolen_funcs),
- INTEL_HSW_D_IDS(&gen6_stolen_funcs),
- INTEL_HSW_M_IDS(&gen6_stolen_funcs),
- INTEL_BDW_M_IDS(&gen8_stolen_funcs),
- INTEL_BDW_D_IDS(&gen8_stolen_funcs),
- INTEL_CHV_IDS(&chv_stolen_funcs),
- INTEL_SKL_IDS(&gen9_stolen_funcs),
- INTEL_BXT_IDS(&gen9_stolen_funcs),
- INTEL_KBL_IDS(&gen9_stolen_funcs),
+static const struct pci_device_id intel_early_ids[] __initconst = {
+ INTEL_I830_IDS(&i830_early_ops),
+ INTEL_I845G_IDS(&i845_early_ops),
+ INTEL_I85X_IDS(&i85x_early_ops),
+ INTEL_I865G_IDS(&i865_early_ops),
+ INTEL_I915G_IDS(&gen3_early_ops),
+ INTEL_I915GM_IDS(&gen3_early_ops),
+ INTEL_I945G_IDS(&gen3_early_ops),
+ INTEL_I945GM_IDS(&gen3_early_ops),
+ INTEL_VLV_M_IDS(&gen6_early_ops),
+ INTEL_VLV_D_IDS(&gen6_early_ops),
+ INTEL_PINEVIEW_IDS(&gen3_early_ops),
+ INTEL_I965G_IDS(&gen3_early_ops),
+ INTEL_G33_IDS(&gen3_early_ops),
+ INTEL_I965GM_IDS(&gen3_early_ops),
+ INTEL_GM45_IDS(&gen3_early_ops),
+ INTEL_G45_IDS(&gen3_early_ops),
+ INTEL_IRONLAKE_D_IDS(&gen3_early_ops),
+ INTEL_IRONLAKE_M_IDS(&gen3_early_ops),
+ INTEL_SNB_D_IDS(&gen6_early_ops),
+ INTEL_SNB_M_IDS(&gen6_early_ops),
+ INTEL_IVB_M_IDS(&gen6_early_ops),
+ INTEL_IVB_D_IDS(&gen6_early_ops),
+ INTEL_HSW_D_IDS(&gen6_early_ops),
+ INTEL_HSW_M_IDS(&gen6_early_ops),
+ INTEL_BDW_M_IDS(&gen8_early_ops),
+ INTEL_BDW_D_IDS(&gen8_early_ops),
+ INTEL_CHV_IDS(&chv_early_ops),
+ INTEL_SKL_IDS(&gen9_early_ops),
+ INTEL_BXT_IDS(&gen9_early_ops),
+ INTEL_KBL_IDS(&gen9_early_ops),
};
-static void __init intel_graphics_stolen(int num, int slot, int func)
+static void __init
+intel_graphics_stolen(int num, int slot, int func,
+ const struct intel_early_ops *early_ops)
{
+ phys_addr_t base, end;
size_t size;
+
+ size = early_ops->stolen_size(num, slot, func);
+ base = early_ops->stolen_base(num, slot, func, size);
+
+ if (!size || !base)
+ return;
+
+ end = base + size - 1;
+ printk(KERN_INFO "Reserving Intel graphics memory at %pa-%pa\n",
+ &base, &end);
+
+ /* Mark this space as reserved */
+ e820_add_region(base, size, E820_RESERVED);
+ sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+}
+
+static void __init intel_graphics_quirks(int num, int slot, int func)
+{
+ const struct intel_early_ops *early_ops;
+ u16 device;
int i;
- u32 start;
- u16 device, subvendor, subdevice;
device = read_pci_config_16(num, slot, func, PCI_DEVICE_ID);
- subvendor = read_pci_config_16(num, slot, func,
- PCI_SUBSYSTEM_VENDOR_ID);
- subdevice = read_pci_config_16(num, slot, func, PCI_SUBSYSTEM_ID);
-
- for (i = 0; i < ARRAY_SIZE(intel_stolen_ids); i++) {
- if (intel_stolen_ids[i].device == device) {
- const struct intel_stolen_funcs *stolen_funcs =
- (const struct intel_stolen_funcs *)intel_stolen_ids[i].driver_data;
- size = stolen_funcs->size(num, slot, func);
- start = stolen_funcs->base(num, slot, func, size);
- if (size && start) {
- printk(KERN_INFO "Reserving Intel graphics stolen memory at 0x%x-0x%x\n",
- start, start + (u32)size - 1);
- /* Mark this space as reserved */
- e820_add_region(start, size, E820_RESERVED);
- sanitize_e820_map(e820.map,
- ARRAY_SIZE(e820.map),
- &e820.nr_map);
- }
- return;
- }
+
+ for (i = 0; i < ARRAY_SIZE(intel_early_ids); i++) {
+ kernel_ulong_t driver_data = intel_early_ids[i].driver_data;
+
+ if (intel_early_ids[i].device != device)
+ continue;
+
+ early_ops = (typeof(early_ops))driver_data;
+
+ intel_graphics_stolen(num, slot, func, early_ops);
+
+ return;
}
}
@@ -590,6 +588,61 @@ static void __init force_disable_hpet(int num, int slot, int func)
#endif
}
+#define BCM4331_MMIO_SIZE 16384
+#define BCM4331_PM_CAP 0x40
+#define bcma_aread32(reg) ioread32(mmio + 1 * BCMA_CORE_SIZE + reg)
+#define bcma_awrite32(reg, val) iowrite32(val, mmio + 1 * BCMA_CORE_SIZE + reg)
+
+static void __init apple_airport_reset(int bus, int slot, int func)
+{
+ void __iomem *mmio;
+ u16 pmcsr;
+ u64 addr;
+ int i;
+
+ if (!dmi_match(DMI_SYS_VENDOR, "Apple Inc."))
+ return;
+
+ /* Card may have been put into PCI_D3hot by grub quirk */
+ pmcsr = read_pci_config_16(bus, slot, func, BCM4331_PM_CAP + PCI_PM_CTRL);
+
+ if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) {
+ pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
+ write_pci_config_16(bus, slot, func, BCM4331_PM_CAP + PCI_PM_CTRL, pmcsr);
+ mdelay(10);
+
+ pmcsr = read_pci_config_16(bus, slot, func, BCM4331_PM_CAP + PCI_PM_CTRL);
+ if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) {
+ dev_err("Cannot power up Apple AirPort card\n");
+ return;
+ }
+ }
+
+ addr = read_pci_config(bus, slot, func, PCI_BASE_ADDRESS_0);
+ addr |= (u64)read_pci_config(bus, slot, func, PCI_BASE_ADDRESS_1) << 32;
+ addr &= PCI_BASE_ADDRESS_MEM_MASK;
+
+ mmio = early_ioremap(addr, BCM4331_MMIO_SIZE);
+ if (!mmio) {
+ dev_err("Cannot iomap Apple AirPort card\n");
+ return;
+ }
+
+ pr_info("Resetting Apple AirPort card (left enabled by EFI)\n");
+
+ for (i = 0; bcma_aread32(BCMA_RESET_ST) && i < 30; i++)
+ udelay(10);
+
+ bcma_awrite32(BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
+ bcma_aread32(BCMA_RESET_CTL);
+ udelay(1);
+
+ bcma_awrite32(BCMA_RESET_CTL, 0);
+ bcma_aread32(BCMA_RESET_CTL);
+ udelay(10);
+
+ early_iounmap(mmio, BCM4331_MMIO_SIZE);
+}
#define QFLAG_APPLY_ONCE 0x1
#define QFLAG_APPLIED 0x2
@@ -603,12 +656,6 @@ struct chipset {
void (*f)(int num, int slot, int func);
};
-/*
- * Only works for devices on the root bus. If you add any devices
- * not on bus 0 readd another loop level in early_quirks(). But
- * be careful because at least the Nvidia quirk here relies on
- * only matching on bus 0.
- */
static struct chipset early_qrk[] __initdata = {
{ PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, nvidia_bugs },
@@ -627,7 +674,7 @@ static struct chipset early_qrk[] __initdata = {
{ 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_VGA, PCI_ANY_ID,
- QFLAG_APPLY_ONCE, intel_graphics_stolen },
+ QFLAG_APPLY_ONCE, intel_graphics_quirks },
/*
* HPET on the current version of the Baytrail platform has accuracy
* problems: it will halt in deep idle state - so we disable it.
@@ -638,9 +685,13 @@ static struct chipset early_qrk[] __initdata = {
*/
{ PCI_VENDOR_ID_INTEL, 0x0f00,
PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet},
+ { PCI_VENDOR_ID_BROADCOM, 0x4331,
+ PCI_CLASS_NETWORK_OTHER, PCI_ANY_ID, 0, apple_airport_reset},
{}
};
+static void __init early_pci_scan_bus(int bus);
+
/**
* check_dev_quirk - apply early quirks to a given PCI device
* @num: bus number
@@ -649,7 +700,7 @@ static struct chipset early_qrk[] __initdata = {
*
* Check the vendor & device ID against the early quirks table.
*
- * If the device is single function, let early_quirks() know so we don't
+ * If the device is single function, let early_pci_scan_bus() know so we don't
* poke at this device again.
*/
static int __init check_dev_quirk(int num, int slot, int func)
@@ -658,6 +709,7 @@ static int __init check_dev_quirk(int num, int slot, int func)
u16 vendor;
u16 device;
u8 type;
+ u8 sec;
int i;
class = read_pci_config_16(num, slot, func, PCI_CLASS_DEVICE);
@@ -685,25 +737,36 @@ static int __init check_dev_quirk(int num, int slot, int func)
type = read_pci_config_byte(num, slot, func,
PCI_HEADER_TYPE);
+
+ if ((type & 0x7f) == PCI_HEADER_TYPE_BRIDGE) {
+ sec = read_pci_config_byte(num, slot, func, PCI_SECONDARY_BUS);
+ if (sec > num)
+ early_pci_scan_bus(sec);
+ }
+
if (!(type & 0x80))
return -1;
return 0;
}
-void __init early_quirks(void)
+static void __init early_pci_scan_bus(int bus)
{
int slot, func;
- if (!early_pci_allowed())
- return;
-
/* Poor man's PCI discovery */
- /* Only scan the root bus */
for (slot = 0; slot < 32; slot++)
for (func = 0; func < 8; func++) {
/* Only probe function 0 on single fn devices */
- if (check_dev_quirk(0, slot, func))
+ if (check_dev_quirk(bus, slot, func))
break;
}
}
+
+void __init early_quirks(void)
+{
+ if (!early_pci_allowed())
+ return;
+
+ early_pci_scan_bus(0);
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.