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-rw-r--r--arch/x86/pci/mmconfig-shared.c65
-rw-r--r--drivers/pci/probe.c3
-rw-r--r--drivers/pci/setup-bus.c35
3 files changed, 86 insertions, 17 deletions
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 23faaa890ffc..429c7014febc 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -293,7 +293,7 @@ static acpi_status __init find_mboard_resource(acpi_handle handle, u32 lvl,
return AE_OK;
}
-static int __init is_acpi_reserved(unsigned long start, unsigned long end)
+static int __init is_acpi_reserved(u64 start, u64 end, unsigned not_used)
{
struct resource mcfg_res;
@@ -310,6 +310,41 @@ static int __init is_acpi_reserved(unsigned long start, unsigned long end)
return mcfg_res.flags;
}
+typedef int (*check_reserved_t)(u64 start, u64 end, unsigned type);
+
+static int __init is_mmconf_reserved(check_reserved_t is_reserved,
+ u64 addr, u64 size, int i,
+ typeof(pci_mmcfg_config[0]) *cfg, int with_e820)
+{
+ u64 old_size = size;
+ int valid = 0;
+
+ while (!is_reserved(addr, addr + size - 1, E820_RESERVED)) {
+ size >>= 1;
+ if (size < (16UL<<20))
+ break;
+ }
+
+ if (size >= (16UL<<20) || size == old_size) {
+ printk(KERN_NOTICE
+ "PCI: MCFG area at %Lx reserved in %s\n",
+ addr, with_e820?"E820":"ACPI motherboard resources");
+ valid = 1;
+
+ if (old_size != size) {
+ /* update end_bus_number */
+ cfg->end_bus_number = cfg->start_bus_number + ((size>>20) - 1);
+ printk(KERN_NOTICE "PCI: updated MCFG configuration %d: base %lx "
+ "segment %hu buses %u - %u\n",
+ i, (unsigned long)cfg->address, cfg->pci_segment,
+ (unsigned int)cfg->start_bus_number,
+ (unsigned int)cfg->end_bus_number);
+ }
+ }
+
+ return valid;
+}
+
static void __init pci_mmcfg_reject_broken(int early)
{
typeof(pci_mmcfg_config[0]) *cfg;
@@ -324,21 +359,22 @@ static void __init pci_mmcfg_reject_broken(int early)
for (i = 0; i < pci_mmcfg_config_num; i++) {
int valid = 0;
- u32 size = (cfg->end_bus_number + 1) << 20;
+ u64 addr, size;
+
cfg = &pci_mmcfg_config[i];
+ addr = cfg->start_bus_number;
+ addr <<= 20;
+ addr += cfg->address;
+ size = cfg->end_bus_number + 1 - cfg->start_bus_number;
+ size <<= 20;
printk(KERN_NOTICE "PCI: MCFG configuration %d: base %lx "
"segment %hu buses %u - %u\n",
i, (unsigned long)cfg->address, cfg->pci_segment,
(unsigned int)cfg->start_bus_number,
(unsigned int)cfg->end_bus_number);
- if (!early &&
- is_acpi_reserved(cfg->address, cfg->address + size - 1)) {
- printk(KERN_NOTICE "PCI: MCFG area at %Lx reserved "
- "in ACPI motherboard resources\n",
- cfg->address);
- valid = 1;
- }
+ if (!early)
+ valid = is_mmconf_reserved(is_acpi_reserved, addr, size, i, cfg, 0);
if (valid)
continue;
@@ -347,16 +383,11 @@ static void __init pci_mmcfg_reject_broken(int early)
printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %Lx is not"
" reserved in ACPI motherboard resources\n",
cfg->address);
+
/* Don't try to do this check unless configuration
type 1 is available. how about type 2 ?*/
- if (raw_pci_ops && e820_all_mapped(cfg->address,
- cfg->address + size - 1,
- E820_RESERVED)) {
- printk(KERN_NOTICE
- "PCI: MCFG area at %Lx reserved in E820\n",
- cfg->address);
- valid = 1;
- }
+ if (raw_pci_ops)
+ valid = is_mmconf_reserved(e820_all_mapped, addr, size, i, cfg, 1);
if (!valid)
goto reject;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index a04498d390c8..cce2f4cb1fbf 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -383,6 +383,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
res->start = base;
if (!res->end)
res->end = limit + 0xfff;
+ printk(KERN_INFO "PCI: bridge %s io port: [%llx, %llx]\n", pci_name(dev), res->start, res->end);
}
res = child->resource[1];
@@ -394,6 +395,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM;
res->start = base;
res->end = limit + 0xfffff;
+ printk(KERN_INFO "PCI: bridge %s 32bit mmio: [%llx, %llx]\n", pci_name(dev), res->start, res->end);
}
res = child->resource[2];
@@ -429,6 +431,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM | IORESOURCE_PREFETCH;
res->start = base;
res->end = limit + 0xfffff;
+ printk(KERN_INFO "PCI: bridge %s %sbit mmio pref: [%llx, %llx]\n", pci_name(dev), (res->flags & PCI_PREF_RANGE_TYPE_64)?"64":"32",res->start, res->end);
}
}
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 827c0a520e2b..82634a2f1b1d 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -530,6 +530,36 @@ void __ref pci_bus_assign_resources(struct pci_bus *bus)
}
EXPORT_SYMBOL(pci_bus_assign_resources);
+static void pci_bus_dump_res(struct pci_bus *bus)
+{
+ int i;
+
+ for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
+ struct resource *res = bus->resource[i];
+ if (!res)
+ continue;
+
+ printk(KERN_INFO "bus: %02x index %x %s: [%llx, %llx]\n", bus->number, i, (res->flags & IORESOURCE_IO)? "io port":"mmio", res->start, res->end);
+ }
+}
+
+static void pci_bus_dump_resources(struct pci_bus *bus)
+{
+ struct pci_bus *b;
+ struct pci_dev *dev;
+
+
+ pci_bus_dump_res(bus);
+
+ list_for_each_entry(dev, &bus->devices, bus_list) {
+ b = dev->subordinate;
+ if (!b)
+ continue;
+
+ pci_bus_dump_resources(b);
+ }
+}
+
void __init
pci_assign_unassigned_resources(void)
{
@@ -545,4 +575,9 @@ pci_assign_unassigned_resources(void)
pci_bus_assign_resources(bus);
pci_enable_bridges(bus);
}
+
+ /* dump the resource on buses */
+ list_for_each_entry(bus, &pci_root_buses, node) {
+ pci_bus_dump_resources(bus);
+ }
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 18:12:16 +0100