fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / i386 / pci / common.c

diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index 383827d..d9e2a9e 100644 (file)
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -8,6 +8,7 @@
 #include <linux/pci.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
+#include <linux/dmi.h>
 
 #include <asm/acpi.h>
 #include <asm/segment.h>
@@ -16,15 +17,14 @@
 
 #include "pci.h"
 
-#ifdef CONFIG_PCI_BIOS
-extern  void pcibios_sort(void);
-#endif
-
 unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
-                               PCI_PROBE_MMCONF;
+                               0; /* PCI_PROBE_MMCONF */
 
+static int pci_bf_sort;
+int pci_routeirq;
 int pcibios_last_bus = -1;
-struct pci_bus *pci_root_bus = NULL;
+unsigned long pirq_table_addr;
+struct pci_bus *pci_root_bus;
 struct pci_raw_ops *raw_pci_ops;
 
 static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
@@ -52,7 +52,7 @@ int pcibios_scanned;
  * This interrupt-safe spinlock protects all accesses to PCI
  * configuration space.
  */
-spinlock_t pci_config_lock = SPIN_LOCK_UNLOCKED;
+DEFINE_SPINLOCK(pci_config_lock);
 
 /*
  * Several buggy motherboards address only 16 devices and mirror
@@ -70,7 +70,7 @@ static void __devinit pcibios_fixup_ghosts(struct pci_bus *b)
        int i;
 
        DBG("PCI: Scanning for ghost devices on bus %d\n", b->number);
-       for (ln=b->devices.next; ln != &b->devices; ln=ln->next) {
+       list_for_each(ln, &b->devices) {
                d = pci_dev_b(ln);
                if ((d->class >> 8) == PCI_CLASS_BRIDGE_HOST)
                        seen_host_bridge++;
@@ -118,11 +118,88 @@ void __devinit  pcibios_fixup_bus(struct pci_bus *b)
        pci_read_bridge_bases(b);
 }
 
+/*
+ * Only use DMI information to set this if nothing was passed
+ * on the kernel command line (which was parsed earlier).
+ */
+
+static int __devinit set_bf_sort(struct dmi_system_id *d)
+{
+       if (pci_bf_sort == pci_bf_sort_default) {
+               pci_bf_sort = pci_dmi_bf;
+               printk(KERN_INFO "PCI: %s detected, enabling pci=bfsort.\n", d->ident);
+       }
+       return 0;
+}
+
+/*
+ * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus)
+ */
+#ifdef __i386__
+static int __devinit assign_all_busses(struct dmi_system_id *d)
+{
+       pci_probe |= PCI_ASSIGN_ALL_BUSSES;
+       printk(KERN_INFO "%s detected: enabling PCI bus# renumbering"
+                       " (pci=assign-busses)\n", d->ident);
+       return 0;
+}
+#endif
+
+static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
+#ifdef __i386__
+/*
+ * Laptops which need pci=assign-busses to see Cardbus cards
+ */
+       {
+               .callback = assign_all_busses,
+               .ident = "Samsung X20 Laptop",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "SX20S"),
+               },
+       },
+#endif         /* __i386__ */
+       {
+               .callback = set_bf_sort,
+               .ident = "Dell PowerEdge 1950",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"),
+               },
+       },
+       {
+               .callback = set_bf_sort,
+               .ident = "Dell PowerEdge 1955",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1955"),
+               },
+       },
+       {
+               .callback = set_bf_sort,
+               .ident = "Dell PowerEdge 2900",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2900"),
+               },
+       },
+       {
+               .callback = set_bf_sort,
+               .ident = "Dell PowerEdge 2950",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2950"),
+               },
+       },
+       {}
+};
 
 struct pci_bus * __devinit pcibios_scan_root(int busnum)
 {
        struct pci_bus *bus = NULL;
 
+       dmi_check_system(pciprobe_dmi_table);
+
        while ((bus = pci_find_next_bus(bus)) != NULL) {
                if (bus->number == busnum) {
                        /* Already scanned */
@@ -130,9 +207,9 @@ struct pci_bus * __devinit pcibios_scan_root(int busnum)
                }
        }
 
-       printk("PCI: Probing PCI hardware (bus %02x)\n", busnum);
+       printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
 
-       return pci_scan_bus(busnum, &pci_root_ops, NULL);
+       return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, NULL);
 }
 
 extern u8 pci_cache_line_size;
@@ -142,7 +219,7 @@ static int __init pcibios_init(void)
        struct cpuinfo_x86 *c = &boot_cpu_data;
 
        if (!raw_pci_ops) {
-               printk("PCI: System does not support PCI\n");
+               printk(KERN_WARNING "PCI: System does not support PCI\n");
                return 0;
        }
 
@@ -159,6 +236,8 @@ static int __init pcibios_init(void)
 
        pcibios_resource_survey();
 
+       if (pci_bf_sort >= pci_force_bf)
+               pci_sort_breadthfirst();
 #ifdef CONFIG_PCI_BIOS
        if ((pci_probe & PCI_BIOS_SORT) && !(pci_probe & PCI_NO_SORT))
                pcibios_sort();
@@ -173,6 +252,12 @@ char * __devinit  pcibios_setup(char *str)
        if (!strcmp(str, "off")) {
                pci_probe = 0;
                return NULL;
+       } else if (!strcmp(str, "bfsort")) {
+               pci_bf_sort = pci_force_bf;
+               return NULL;
+       } else if (!strcmp(str, "nobfsort")) {
+               pci_bf_sort = pci_force_nobf;
+               return NULL;
        }
 #ifdef CONFIG_PCI_BIOS
        else if (!strcmp(str, "bios")) {
@@ -187,6 +272,9 @@ char * __devinit  pcibios_setup(char *str)
        } else if (!strcmp(str, "biosirq")) {
                pci_probe |= PCI_BIOS_IRQ_SCAN;
                return NULL;
+       } else if (!strncmp(str, "pirqaddr=", 9)) {
+               pirq_table_addr = simple_strtoul(str+9, NULL, 0);
+               return NULL;
        }
 #endif
 #ifdef CONFIG_PCI_DIRECT
@@ -204,11 +292,19 @@ char * __devinit  pcibios_setup(char *str)
                pci_probe &= ~PCI_PROBE_MMCONF;
                return NULL;
        }
+       else if (!strcmp(str, "mmconf")) {
+               pci_probe |= PCI_PROBE_MMCONF;
+               return NULL;
+       }
 #endif
        else if (!strcmp(str, "noacpi")) {
                acpi_noirq_set();
                return NULL;
        }
+       else if (!strcmp(str, "noearly")) {
+               pci_probe |= PCI_PROBE_NOEARLY;
+               return NULL;
+       }
 #ifndef CONFIG_X86_VISWS
        else if (!strcmp(str, "usepirqmask")) {
                pci_probe |= PCI_USE_PIRQ_MASK;
@@ -227,6 +323,9 @@ char * __devinit  pcibios_setup(char *str)
        } else if (!strcmp(str, "assign-busses")) {
                pci_probe |= PCI_ASSIGN_ALL_BUSSES;
                return NULL;
+       } else if (!strcmp(str, "routeirq")) {
+               pci_routeirq = 1;
+               return NULL;
        }
        return str;
 }
@@ -245,3 +344,9 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 
        return pcibios_enable_irq(dev);
 }
+
+void pcibios_disable_device (struct pci_dev *dev)
+{
+       if (pcibios_disable_irq)
+               pcibios_disable_irq(dev);
+}