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-rw-r--r--arch/x86/include/asm/pci.h3
-rw-r--r--arch/x86/kernel/apic/io_apic.c4
-rw-r--r--arch/x86/kernel/pci-dma.c3
-rw-r--r--arch/x86/pci/early.c19
-rw-r--r--arch/x86/pci/fixup.c20
-rw-r--r--arch/x86/pci/legacy.c3
-rw-r--r--arch/x86/pci/mmconfig-shared.c227
-rw-r--r--arch/x86/pci/mmconfig_64.c17
8 files changed, 204 insertions, 92 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index a977de23cb4..a0301bfeb95 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -86,6 +86,9 @@ static inline void early_quirks(void) { }
extern void pci_iommu_alloc(void);
+/* MSI arch hook */
+#define arch_setup_msi_irqs arch_setup_msi_irqs
+
#endif /* __KERNEL__ */
#ifdef CONFIG_X86_32
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index da99ffcdfde..1bb5c6cee3e 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3468,6 +3468,10 @@ int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
struct intel_iommu *iommu = NULL;
int index = 0;
+ /* x86 doesn't support multiple MSI yet */
+ if (type == PCI_CAP_ID_MSI && nvec > 1)
+ return 1;
+
irq_want = nr_irqs_gsi;
sub_handle = 0;
list_for_each_entry(msidesc, &dev->msi_list, list) {
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index c7c4776ff63..90f5b9ef5de 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -300,8 +300,7 @@ fs_initcall(pci_iommu_init);
static __devinit void via_no_dac(struct pci_dev *dev)
{
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
- printk(KERN_INFO
- "PCI: VIA PCI bridge detected. Disabling DAC.\n");
+ dev_info(&dev->dev, "disabling DAC on VIA PCI bridge\n");
forbid_dac = 1;
}
}
diff --git a/arch/x86/pci/early.c b/arch/x86/pci/early.c
index f6adf2c6d75..aaf26ae58cd 100644
--- a/arch/x86/pci/early.c
+++ b/arch/x86/pci/early.c
@@ -69,11 +69,12 @@ void early_dump_pci_device(u8 bus, u8 slot, u8 func)
int j;
u32 val;
- printk(KERN_INFO "PCI: %02x:%02x:%02x", bus, slot, func);
+ printk(KERN_INFO "pci 0000:%02x:%02x.%d config space:",
+ bus, slot, func);
for (i = 0; i < 256; i += 4) {
if (!(i & 0x0f))
- printk("\n%04x:",i);
+ printk("\n %02x:",i);
val = read_pci_config(bus, slot, func, i);
for (j = 0; j < 4; j++) {
@@ -96,20 +97,22 @@ void early_dump_pci_devices(void)
for (func = 0; func < 8; func++) {
u32 class;
u8 type;
+
class = read_pci_config(bus, slot, func,
PCI_CLASS_REVISION);
if (class == 0xffffffff)
- break;
+ continue;
early_dump_pci_device(bus, slot, func);
- /* No multi-function device? */
- type = read_pci_config_byte(bus, slot, func,
+ if (func == 0) {
+ type = read_pci_config_byte(bus, slot,
+ func,
PCI_HEADER_TYPE);
- if (!(type & 0x80))
- break;
+ if (!(type & 0x80))
+ break;
+ }
}
}
}
}
-
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index 9c49919e4d1..6dd89555fbf 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -495,26 +495,6 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015,
pci_siemens_interrupt_controller);
/*
- * Regular PCI devices have 256 bytes, but AMD Family 10h/11h CPUs have
- * 4096 bytes configuration space for each function of their processor
- * configuration space.
- */
-static void amd_cpu_pci_cfg_space_size(struct pci_dev *dev)
-{
- dev->cfg_size = pci_cfg_space_size_ext(dev);
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1200, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1201, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1202, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1203, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1204, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1300, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1301, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1302, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1303, amd_cpu_pci_cfg_space_size);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1304, amd_cpu_pci_cfg_space_size);
-
-/*
* SB600: Disable BAR1 on device 14.0 to avoid HPET resources from
* confusing the PCI engine:
*/
diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
index f1065b129e9..4061bb0f267 100644
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c
@@ -50,8 +50,6 @@ static int __init pci_legacy_init(void)
if (pci_root_bus)
pci_bus_add_devices(pci_root_bus);
- pcibios_fixup_peer_bridges();
-
return 0;
}
@@ -67,6 +65,7 @@ int __init pci_subsys_init(void)
pci_visws_init();
#endif
pci_legacy_init();
+ pcibios_fixup_peer_bridges();
pcibios_irq_init();
pcibios_init();
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 89bf9242c80..905bb526b13 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -14,6 +14,7 @@
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/bitmap.h>
+#include <linux/sort.h>
#include <asm/e820.h>
#include <asm/pci_x86.h>
@@ -24,24 +25,49 @@
/* Indicate if the mmcfg resources have been placed into the resource table. */
static int __initdata pci_mmcfg_resources_inserted;
+static __init int extend_mmcfg(int num)
+{
+ struct acpi_mcfg_allocation *new;
+ int new_num = pci_mmcfg_config_num + num;
+
+ new = kzalloc(sizeof(pci_mmcfg_config[0]) * new_num, GFP_KERNEL);
+ if (!new)
+ return -1;
+
+ if (pci_mmcfg_config) {
+ memcpy(new, pci_mmcfg_config,
+ sizeof(pci_mmcfg_config[0]) * new_num);
+ kfree(pci_mmcfg_config);
+ }
+ pci_mmcfg_config = new;
+
+ return 0;
+}
+
+static __init void fill_one_mmcfg(u64 addr, int segment, int start, int end)
+{
+ int i = pci_mmcfg_config_num;
+
+ pci_mmcfg_config_num++;
+ pci_mmcfg_config[i].address = addr;
+ pci_mmcfg_config[i].pci_segment = segment;
+ pci_mmcfg_config[i].start_bus_number = start;
+ pci_mmcfg_config[i].end_bus_number = end;
+}
+
static const char __init *pci_mmcfg_e7520(void)
{
u32 win;
raw_pci_ops->read(0, 0, PCI_DEVFN(0, 0), 0xce, 2, &win);
win = win & 0xf000;
- if(win == 0x0000 || win == 0xf000)
- pci_mmcfg_config_num = 0;
- else {
- pci_mmcfg_config_num = 1;
- pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
- if (!pci_mmcfg_config)
- return NULL;
- pci_mmcfg_config[0].address = win << 16;
- pci_mmcfg_config[0].pci_segment = 0;
- pci_mmcfg_config[0].start_bus_number = 0;
- pci_mmcfg_config[0].end_bus_number = 255;
- }
+ if (win == 0x0000 || win == 0xf000)
+ return NULL;
+
+ if (extend_mmcfg(1) == -1)
+ return NULL;
+
+ fill_one_mmcfg(win << 16, 0, 0, 255);
return "Intel Corporation E7520 Memory Controller Hub";
}
@@ -50,13 +76,11 @@ static const char __init *pci_mmcfg_intel_945(void)
{
u32 pciexbar, mask = 0, len = 0;
- pci_mmcfg_config_num = 1;
-
raw_pci_ops->read(0, 0, PCI_DEVFN(0, 0), 0x48, 4, &pciexbar);
/* Enable bit */
if (!(pciexbar & 1))
- pci_mmcfg_config_num = 0;
+ return NULL;
/* Size bits */
switch ((pciexbar >> 1) & 3) {
@@ -73,28 +97,23 @@ static const char __init *pci_mmcfg_intel_945(void)
len = 0x04000000U;
break;
default:
- pci_mmcfg_config_num = 0;
+ return NULL;
}
/* Errata #2, things break when not aligned on a 256Mb boundary */
/* Can only happen in 64M/128M mode */
if ((pciexbar & mask) & 0x0fffffffU)
- pci_mmcfg_config_num = 0;
+ return NULL;
/* Don't hit the APIC registers and their friends */
if ((pciexbar & mask) >= 0xf0000000U)
- pci_mmcfg_config_num = 0;
-
- if (pci_mmcfg_config_num) {
- pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
- if (!pci_mmcfg_config)
- return NULL;
- pci_mmcfg_config[0].address = pciexbar & mask;
- pci_mmcfg_config[0].pci_segment = 0;
- pci_mmcfg_config[0].start_bus_number = 0;
- pci_mmcfg_config[0].end_bus_number = (len >> 20) - 1;
- }
+ return NULL;
+
+ if (extend_mmcfg(1) == -1)
+ return NULL;
+
+ fill_one_mmcfg(pciexbar & mask, 0, 0, (len >> 20) - 1);
return "Intel Corporation 945G/GZ/P/PL Express Memory Controller Hub";
}
@@ -138,22 +157,77 @@ static const char __init *pci_mmcfg_amd_fam10h(void)
busnbits = 8;
}
- pci_mmcfg_config_num = (1 << segnbits);
- pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]) *
- pci_mmcfg_config_num, GFP_KERNEL);
- if (!pci_mmcfg_config)
+ if (extend_mmcfg(1 << segnbits) == -1)
return NULL;
- for (i = 0; i < (1 << segnbits); i++) {
- pci_mmcfg_config[i].address = base + (1<<28) * i;
- pci_mmcfg_config[i].pci_segment = i;
- pci_mmcfg_config[i].start_bus_number = 0;
- pci_mmcfg_config[i].end_bus_number = (1 << busnbits) - 1;
- }
+ for (i = 0; i < (1 << segnbits); i++)
+ fill_one_mmcfg(base + (1<<28) * i, i, 0, (1 << busnbits) - 1);
return "AMD Family 10h NB";
}
+static bool __initdata mcp55_checked;
+static const char __init *pci_mmcfg_nvidia_mcp55(void)
+{
+ int bus;
+ int mcp55_mmconf_found = 0;
+
+ static const u32 extcfg_regnum = 0x90;
+ static const u32 extcfg_regsize = 4;
+ static const u32 extcfg_enable_mask = 1<<31;
+ static const u32 extcfg_start_mask = 0xff<<16;
+ static const int extcfg_start_shift = 16;
+ static const u32 extcfg_size_mask = 0x3<<28;
+ static const int extcfg_size_shift = 28;
+ static const int extcfg_sizebus[] = {0x100, 0x80, 0x40, 0x20};
+ static const u32 extcfg_base_mask[] = {0x7ff8, 0x7ffc, 0x7ffe, 0x7fff};
+ static const int extcfg_base_lshift = 25;
+
+ /*
+ * do check if amd fam10h already took over
+ */
+ if (!acpi_disabled || pci_mmcfg_config_num || mcp55_checked)
+ return NULL;
+
+ mcp55_checked = true;
+ for (bus = 0; bus < 256; bus++) {
+ u64 base;
+ u32 l, extcfg;
+ u16 vendor, device;
+ int start, size_index, end;
+
+ raw_pci_ops->read(0, bus, PCI_DEVFN(0, 0), 0, 4, &l);
+ vendor = l & 0xffff;
+ device = (l >> 16) & 0xffff;
+
+ if (PCI_VENDOR_ID_NVIDIA != vendor || 0x0369 != device)
+ continue;
+
+ raw_pci_ops->read(0, bus, PCI_DEVFN(0, 0), extcfg_regnum,
+ extcfg_regsize, &extcfg);
+
+ if (!(extcfg & extcfg_enable_mask))
+ continue;
+
+ if (extend_mmcfg(1) == -1)
+ continue;
+
+ size_index = (extcfg & extcfg_size_mask) >> extcfg_size_shift;
+ base = extcfg & extcfg_base_mask[size_index];
+ /* base could > 4G */
+ base <<= extcfg_base_lshift;
+ start = (extcfg & extcfg_start_mask) >> extcfg_start_shift;
+ end = start + extcfg_sizebus[size_index] - 1;
+ fill_one_mmcfg(base, 0, start, end);
+ mcp55_mmconf_found++;
+ }
+
+ if (!mcp55_mmconf_found)
+ return NULL;
+
+ return "nVidia MCP55";
+}
+
struct pci_mmcfg_hostbridge_probe {
u32 bus;
u32 devfn;
@@ -171,8 +245,52 @@ static struct pci_mmcfg_hostbridge_probe pci_mmcfg_probes[] __initdata = {
0x1200, pci_mmcfg_amd_fam10h },
{ 0xff, PCI_DEVFN(0, 0), PCI_VENDOR_ID_AMD,
0x1200, pci_mmcfg_amd_fam10h },
+ { 0, PCI_DEVFN(0, 0), PCI_VENDOR_ID_NVIDIA,
+ 0x0369, pci_mmcfg_nvidia_mcp55 },
};
+static int __init cmp_mmcfg(const void *x1, const void *x2)
+{
+ const typeof(pci_mmcfg_config[0]) *m1 = x1;
+ const typeof(pci_mmcfg_config[0]) *m2 = x2;
+ int start1, start2;
+
+ start1 = m1->start_bus_number;
+ start2 = m2->start_bus_number;
+
+ return start1 - start2;
+}
+
+static void __init pci_mmcfg_check_end_bus_number(void)
+{
+ int i;
+ typeof(pci_mmcfg_config[0]) *cfg, *cfgx;
+
+ /* sort them at first */
+ sort(pci_mmcfg_config, pci_mmcfg_config_num,
+ sizeof(pci_mmcfg_config[0]), cmp_mmcfg, NULL);
+
+ /* last one*/
+ if (pci_mmcfg_config_num > 0) {
+ i = pci_mmcfg_config_num - 1;
+ cfg = &pci_mmcfg_config[i];
+ if (cfg->end_bus_number < cfg->start_bus_number)
+ cfg->end_bus_number = 255;
+ }
+
+ /* don't overlap please */
+ for (i = 0; i < pci_mmcfg_config_num - 1; i++) {
+ cfg = &pci_mmcfg_config[i];
+ cfgx = &pci_mmcfg_config[i+1];
+
+ if (cfg->end_bus_number < cfg->start_bus_number)
+ cfg->end_bus_number = 255;
+
+ if (cfg->end_bus_number >= cfgx->start_bus_number)
+ cfg->end_bus_number = cfgx->start_bus_number - 1;
+ }
+}
+
static int __init pci_mmcfg_check_hostbridge(void)
{
u32 l;
@@ -186,31 +304,33 @@ static int __init pci_mmcfg_check_hostbridge(void)
pci_mmcfg_config_num = 0;
pci_mmcfg_config = NULL;
- name = NULL;
- for (i = 0; !name && i < ARRAY_SIZE(pci_mmcfg_probes); i++) {
+ for (i = 0; i < ARRAY_SIZE(pci_mmcfg_probes); i++) {
bus = pci_mmcfg_probes[i].bus;
devfn = pci_mmcfg_probes[i].devfn;
raw_pci_ops->read(0, bus, devfn, 0, 4, &l);
vendor = l & 0xffff;
device = (l >> 16) & 0xffff;
+ name = NULL;
if (pci_mmcfg_probes[i].vendor == vendor &&
pci_mmcfg_probes[i].device == device)
name = pci_mmcfg_probes[i].probe();
- }
- if (name) {
- printk(KERN_INFO "PCI: Found %s %s MMCONFIG support.\n",
- name, pci_mmcfg_config_num ? "with" : "without");
+ if (name)
+ printk(KERN_INFO "PCI: Found %s with MMCONFIG support.\n",
+ name);
}
- return name != NULL;
+ /* some end_bus_number is crazy, fix it */
+ pci_mmcfg_check_end_bus_number();
+
+ return pci_mmcfg_config_num != 0;
}
static void __init pci_mmcfg_insert_resources(void)
{
-#define PCI_MMCFG_RESOURCE_NAME_LEN 19
+#define PCI_MMCFG_RESOURCE_NAME_LEN 24
int i;
struct resource *res;
char *names;
@@ -228,9 +348,10 @@ static void __init pci_mmcfg_insert_resources(void)
struct acpi_mcfg_allocation *cfg = &pci_mmcfg_config[i];
num_buses = cfg->end_bus_number - cfg->start_bus_number + 1;
res->name = names;
- snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN, "PCI MMCONFIG %u",
- cfg->pci_segment);
- res->start = cfg->address;
+ snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN,
+ "PCI MMCONFIG %u [%02x-%02x]", cfg->pci_segment,
+ cfg->start_bus_number, cfg->end_bus_number);
+ res->start = cfg->address + (cfg->start_bus_number << 20);
res->end = res->start + (num_buses << 20) - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
insert_resource(&iomem_resource, res);
@@ -354,8 +475,6 @@ static void __init pci_mmcfg_reject_broken(int early)
(pci_mmcfg_config[0].address == 0))
return;
- cfg = &pci_mmcfg_config[0];
-
for (i = 0; i < pci_mmcfg_config_num; i++) {
int valid = 0;
u64 addr, size;
@@ -423,10 +542,10 @@ static void __init __pci_mmcfg_init(int early)
known_bridge = 1;
}
- if (!known_bridge) {
+ if (!known_bridge)
acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg);
- pci_mmcfg_reject_broken(early);
- }
+
+ pci_mmcfg_reject_broken(early);
if ((pci_mmcfg_config_num == 0) ||
(pci_mmcfg_config == NULL) ||
diff --git a/arch/x86/pci/mmconfig_64.c b/arch/x86/pci/mmconfig_64.c
index 30007ffc8e1..94349f8b2f9 100644
--- a/arch/x86/pci/mmconfig_64.c
+++ b/arch/x86/pci/mmconfig_64.c
@@ -112,13 +112,18 @@ static struct pci_raw_ops pci_mmcfg = {
static void __iomem * __init mcfg_ioremap(struct acpi_mcfg_allocation *cfg)
{
void __iomem *addr;
- u32 size;
-
- size = (cfg->end_bus_number + 1) << 20;
- addr = ioremap_nocache(cfg->address, size);
+ u64 start, size;
+
+ start = cfg->start_bus_number;
+ start <<= 20;
+ start += cfg->address;
+ size = cfg->end_bus_number + 1 - cfg->start_bus_number;
+ size <<= 20;
+ addr = ioremap_nocache(start, size);
if (addr) {
printk(KERN_INFO "PCI: Using MMCONFIG at %Lx - %Lx\n",
- cfg->address, cfg->address + size - 1);
+ start, start + size - 1);
+ addr -= cfg->start_bus_number << 20;
}
return addr;
}
@@ -157,7 +162,7 @@ void __init pci_mmcfg_arch_free(void)
for (i = 0; i < pci_mmcfg_config_num; ++i) {
if (pci_mmcfg_virt[i].virt) {
- iounmap(pci_mmcfg_virt[i].virt);
+ iounmap(pci_mmcfg_virt[i].virt + (pci_mmcfg_virt[i].cfg->start_bus_number << 20));
pci_mmcfg_virt[i].virt = NULL;
pci_mmcfg_virt[i].cfg = NULL;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 00:17:22 +0000