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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-11 12:18:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-11 12:18:16 -0800
commit11bd04f6f35621193311c32e0721142b073a7794 (patch)
tree00979740582bb26e8d3756bf3526c85f19f66a46 /arch/x86/pci/intel_bus.c
parent4e2ccdb0409146f8cf64a11b6ef82a9c928ced2a (diff)
parent9e0b5b2c447ad0caa075a5cfef86def62e1782ff (diff)
downloadtalos-obmc-linux-11bd04f6f35621193311c32e0721142b073a7794.tar.gz
talos-obmc-linux-11bd04f6f35621193311c32e0721142b073a7794.zip
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (109 commits) PCI: fix coding style issue in pci_save_state() PCI: add pci_request_acs PCI: fix BUG_ON triggered by logical PCIe root port removal PCI: remove ifdefed pci_cleanup_aer_correct_error_status PCI: unconditionally clear AER uncorr status register during cleanup x86/PCI: claim SR-IOV BARs in pcibios_allocate_resource PCI: portdrv: remove redundant definitions PCI: portdrv: remove unnecessary struct pcie_port_data PCI: portdrv: minor cleanup for pcie_port_device_register PCI: portdrv: add missing irq cleanup PCI: portdrv: enable device before irq initialization PCI: portdrv: cleanup service irqs initialization PCI: portdrv: check capabilities first PCI: portdrv: move PME capability check PCI: portdrv: remove redundant pcie type calculation PCI: portdrv: cleanup pcie_device registration PCI: portdrv: remove redundant pcie_port_device_probe PCI: Always set prefetchable base/limit upper32 registers PCI: read-modify-write the pcie device control register when initiating pcie flr PCI: show dma_mask bits in /sys ... Fixed up conflicts in: arch/x86/kernel/amd_iommu_init.c drivers/pci/dmar.c drivers/pci/hotplug/acpiphp_glue.c
Diffstat (limited to 'arch/x86/pci/intel_bus.c')
-rw-r--r--arch/x86/pci/intel_bus.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/arch/x86/pci/intel_bus.c b/arch/x86/pci/intel_bus.c
new file mode 100644
index 000000000000..b7a55dc55d13
--- /dev/null
+++ b/arch/x86/pci/intel_bus.c
@@ -0,0 +1,90 @@
+/*
+ * to read io range from IOH pci conf, need to do it after mmconfig is there
+ */
+
+#include <linux/delay.h>
+#include <linux/dmi.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <asm/pci_x86.h>
+
+#include "bus_numa.h"
+
+static inline void print_ioh_resources(struct pci_root_info *info)
+{
+ int res_num;
+ int busnum;
+ int i;
+
+ printk(KERN_DEBUG "IOH bus: [%02x, %02x]\n",
+ info->bus_min, info->bus_max);
+ res_num = info->res_num;
+ busnum = info->bus_min;
+ for (i = 0; i < res_num; i++) {
+ struct resource *res;
+
+ res = &info->res[i];
+ printk(KERN_DEBUG "IOH bus: %02x index %x %s: [%llx, %llx]\n",
+ busnum, i,
+ (res->flags & IORESOURCE_IO) ? "io port" :
+ "mmio",
+ res->start, res->end);
+ }
+}
+
+#define IOH_LIO 0x108
+#define IOH_LMMIOL 0x10c
+#define IOH_LMMIOH 0x110
+#define IOH_LMMIOH_BASEU 0x114
+#define IOH_LMMIOH_LIMITU 0x118
+#define IOH_LCFGBUS 0x11c
+
+static void __devinit pci_root_bus_res(struct pci_dev *dev)
+{
+ u16 word;
+ u32 dword;
+ struct pci_root_info *info;
+ u16 io_base, io_end;
+ u32 mmiol_base, mmiol_end;
+ u64 mmioh_base, mmioh_end;
+ int bus_base, bus_end;
+
+ if (pci_root_num >= PCI_ROOT_NR) {
+ printk(KERN_DEBUG "intel_bus.c: PCI_ROOT_NR is too small\n");
+ return;
+ }
+
+ info = &pci_root_info[pci_root_num];
+ pci_root_num++;
+
+ pci_read_config_word(dev, IOH_LCFGBUS, &word);
+ bus_base = (word & 0xff);
+ bus_end = (word & 0xff00) >> 8;
+ sprintf(info->name, "PCI Bus #%02x", bus_base);
+ info->bus_min = bus_base;
+ info->bus_max = bus_end;
+
+ pci_read_config_word(dev, IOH_LIO, &word);
+ io_base = (word & 0xf0) << (12 - 4);
+ io_end = (word & 0xf000) | 0xfff;
+ update_res(info, io_base, io_end, IORESOURCE_IO, 0);
+
+ pci_read_config_dword(dev, IOH_LMMIOL, &dword);
+ mmiol_base = (dword & 0xff00) << (24 - 8);
+ mmiol_end = (dword & 0xff000000) | 0xffffff;
+ update_res(info, mmiol_base, mmiol_end, IORESOURCE_MEM, 0);
+
+ pci_read_config_dword(dev, IOH_LMMIOH, &dword);
+ mmioh_base = ((u64)(dword & 0xfc00)) << (26 - 10);
+ mmioh_end = ((u64)(dword & 0xfc000000) | 0x3ffffff);
+ pci_read_config_dword(dev, IOH_LMMIOH_BASEU, &dword);
+ mmioh_base |= ((u64)(dword & 0x7ffff)) << 32;
+ pci_read_config_dword(dev, IOH_LMMIOH_LIMITU, &dword);
+ mmioh_end |= ((u64)(dword & 0x7ffff)) << 32;
+ update_res(info, mmioh_base, mmioh_end, IORESOURCE_MEM, 0);
+
+ print_ioh_resources(info);
+}
+
+/* intel IOH */
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, pci_root_bus_res);
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