Intel IOMMU: PCI generic helper function

[safe/jmp/linux-2.6] / drivers / pci / probe.c

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 8802fcb..463a5a9 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -22,6 +22,18 @@ EXPORT_SYMBOL(pci_root_buses);
 
 LIST_HEAD(pci_devices);
 
+/*
+ * Some device drivers need know if pci is initiated.
+ * Basically, we think pci is not initiated when there
+ * is no device in list of pci_devices.
+ */
+int no_pci_devices(void)
+{
+       return list_empty(&pci_devices);
+}
+
+EXPORT_SYMBOL(no_pci_devices);
+
 #ifdef HAVE_PCI_LEGACY
 /**
  * pci_create_legacy_files - create legacy I/O port and memory files
@@ -39,7 +51,6 @@ static void pci_create_legacy_files(struct pci_bus *b)
                b->legacy_io->attr.name = "legacy_io";
                b->legacy_io->size = 0xffff;
                b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
-               b->legacy_io->attr.owner = THIS_MODULE;
                b->legacy_io->read = pci_read_legacy_io;
                b->legacy_io->write = pci_write_legacy_io;
                class_device_create_bin_file(&b->class_dev, b->legacy_io);
@@ -49,7 +60,6 @@ static void pci_create_legacy_files(struct pci_bus *b)
                b->legacy_mem->attr.name = "legacy_mem";
                b->legacy_mem->size = 1024*1024;
                b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
-               b->legacy_mem->attr.owner = THIS_MODULE;
                b->legacy_mem->mmap = pci_mmap_legacy_mem;
                class_device_create_bin_file(&b->class_dev, b->legacy_mem);
        }
@@ -266,8 +276,7 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
                        sz = pci_size(l, sz, (u32)PCI_ROM_ADDRESS_MASK);
                        if (sz) {
                                res->flags = (l & IORESOURCE_ROM_ENABLE) |
-                                 IORESOURCE_MEM | IORESOURCE_PREFETCH |
-                                 IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
+                                 IORESOURCE_MEM | IORESOURCE_READONLY;
                                res->start = l & PCI_ROM_ADDRESS_MASK;
                                res->end = res->start + (unsigned long) sz;
                        }
@@ -275,7 +284,7 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
        }
 }
 
-void __devinit pci_read_bridge_bases(struct pci_bus *child)
+void pci_read_bridge_bases(struct pci_bus *child)
 {
        struct pci_dev *dev = child->self;
        u8 io_base_lo, io_limit_lo;
@@ -587,7 +596,7 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass
                pci_write_config_dword(dev, PCI_PRIMARY_BUS, buses);
 
                if (!is_cardbus) {
-                       child->bridge_ctl = bctl | PCI_BRIDGE_CTL_NO_ISA;
+                       child->bridge_ctl = bctl;
                        /*
                         * Adjust subordinate busnr in parent buses.
                         * We do this before scanning for children because
@@ -643,20 +652,20 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass
 
        sprintf(child->name, (is_cardbus ? "PCI CardBus #%02x" : "PCI Bus #%02x"), child->number);
 
+       /* Has only triggered on CardBus, fixup is in yenta_socket */
        while (bus->parent) {
                if ((child->subordinate > bus->subordinate) ||
                    (child->number > bus->subordinate) ||
                    (child->number < bus->number) ||
                    (child->subordinate < bus->number)) {
-                       printk(KERN_WARNING "PCI: Bus #%02x (-#%02x) is "
-                              "hidden behind%s bridge #%02x (-#%02x)%s\n",
-                              child->number, child->subordinate,
-                              bus->self->transparent ? " transparent" : " ",
-                              bus->number, bus->subordinate,
-                              pcibios_assign_all_busses() ? " " :
-                              " (try 'pci=assign-busses')");
-                       printk(KERN_WARNING "Please report the result to "
-                              "<bk@suse.de> to fix this permanently\n");
+                       pr_debug("PCI: Bus #%02x (-#%02x) is %s"
+                               "hidden behind%s bridge #%02x (-#%02x)\n",
+                               child->number, child->subordinate,
+                               (bus->number > child->subordinate &&
+                                bus->subordinate < child->number) ?
+                                       "wholly " : " partially",
+                               bus->self->transparent ? " transparent" : " ",
+                               bus->number, bus->subordinate);
                }
                bus = bus->parent;
        }
@@ -734,22 +743,46 @@ static int pci_setup_device(struct pci_dev * dev)
                 */
                if (class == PCI_CLASS_STORAGE_IDE) {
                        u8 progif;
+                       struct pci_bus_region region;
+
                        pci_read_config_byte(dev, PCI_CLASS_PROG, &progif);
                        if ((progif & 1) == 0) {
-                               dev->resource[0].start = 0x1F0;
-                               dev->resource[0].end = 0x1F7;
-                               dev->resource[0].flags = LEGACY_IO_RESOURCE;
-                               dev->resource[1].start = 0x3F6;
-                               dev->resource[1].end = 0x3F6;
-                               dev->resource[1].flags = LEGACY_IO_RESOURCE;
+                               struct resource resource = {
+                                       .start = 0x1F0,
+                                       .end = 0x1F7,
+                                       .flags = LEGACY_IO_RESOURCE,
+                               };
+
+                               pcibios_resource_to_bus(dev, &region, &resource);
+                               dev->resource[0].start = region.start;
+                               dev->resource[0].end = region.end;
+                               dev->resource[0].flags = resource.flags;
+                               resource.start = 0x3F6;
+                               resource.end = 0x3F6;
+                               resource.flags = LEGACY_IO_RESOURCE;
+                               pcibios_resource_to_bus(dev, &region, &resource);
+                               dev->resource[1].start = region.start;
+                               dev->resource[1].end = region.end;
+                               dev->resource[1].flags = resource.flags;
                        }
                        if ((progif & 4) == 0) {
-                               dev->resource[2].start = 0x170;
-                               dev->resource[2].end = 0x177;
-                               dev->resource[2].flags = LEGACY_IO_RESOURCE;
-                               dev->resource[3].start = 0x376;
-                               dev->resource[3].end = 0x376;
-                               dev->resource[3].flags = LEGACY_IO_RESOURCE;
+                               struct resource resource = {
+                                       .start = 0x170,
+                                       .end = 0x177,
+                                       .flags = LEGACY_IO_RESOURCE,
+                               };
+
+                               pcibios_resource_to_bus(dev, &region, &resource);
+                               dev->resource[2].start = region.start;
+                               dev->resource[2].end = region.end;
+                               dev->resource[2].flags = resource.flags;
+                               resource.start = 0x376;
+                               resource.end = 0x376;
+                               resource.flags = LEGACY_IO_RESOURCE;
+                               pcibios_resource_to_bus(dev, &region, &resource);
+                               dev->resource[3].start = region.start;
+                               dev->resource[3].end = region.end;
+                               dev->resource[3].flags = resource.flags;
                        }
                }
                break;
@@ -804,6 +837,19 @@ static void pci_release_dev(struct device *dev)
        kfree(pci_dev);
 }
 
+static void set_pcie_port_type(struct pci_dev *pdev)
+{
+       int pos;
+       u16 reg16;
+
+       pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+       if (!pos)
+               return;
+       pdev->is_pcie = 1;
+       pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
+       pdev->pcie_type = (reg16 & PCI_EXP_FLAGS_TYPE) >> 4;
+}
+
 /**
  * pci_cfg_space_size - get the configuration space size of the PCI device.
  * @dev: PCI device
@@ -918,6 +964,7 @@ pci_scan_device(struct pci_bus *bus, int devfn)
        dev->device = (l >> 16) & 0xffff;
        dev->cfg_size = pci_cfg_space_size(dev);
        dev->error_state = pci_channel_io_normal;
+       set_pcie_port_type(dev);
 
        /* Assume 32-bit PCI; let 64-bit PCI cards (which are far rarer)
           set this higher, assuming the system even supports it.  */