9 files changed, 315 insertions, 9 deletions

diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c
index 048f09b62553..0aae2f3847a5 100644
--- a/arch/x86/kernel/pci-dma_32.c
+++ b/arch/x86/kernel/pci-dma_32.c
@@ -63,7 +63,8 @@ void dma_free_coherent(struct device *dev, size_t size,
 {
         struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;
         int order = get_order(size);
-        
+
+        WARN_ON(irqs_disabled());       /* for portability */
         if (mem && vaddr >= mem->virt_base && vaddr < (mem->virt_base + (mem->size << PAGE_SHIFT))) {
                 int page = (vaddr - mem->virt_base) >> PAGE_SHIFT;
 
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index 29711445c818..9576a2eb375e 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -167,6 +167,7 @@ EXPORT_SYMBOL(dma_alloc_coherent);
 void dma_free_coherent(struct device *dev, size_t size,
                          void *vaddr, dma_addr_t bus)
 {
+        WARN_ON(irqs_disabled());       /* for portability */
         if (dma_ops->unmap_single)
                 dma_ops->unmap_single(dev, bus, size, 0);
         free_pages((unsigned long)vaddr, get_order(size));
diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
index 03e1cce58f49..139eb03490f5 100644
--- a/arch/x86/kernel/reboot_fixups_32.c
+++ b/arch/x86/kernel/reboot_fixups_32.c
@@ -11,6 +11,7 @@
 
 #include <asm/delay.h>
 #include <linux/pci.h>
+#include <linux/interrupt.h>
 #include <asm/reboot_fixups.h>
 #include <asm/msr.h>
 
@@ -56,6 +57,11 @@ void mach_reboot_fixups(void)
         struct pci_dev *dev;
         int i;
 
+        /* we can be called from sysrq-B code. In such a case it is
+         * prohibited to dig PCI */
+        if (in_interrupt())
+                return;
+
         for (i=0; i < ARRAY_SIZE(fixups_table); i++) {
                 cur = &(fixups_table[i]);
                 dev = pci_get_device(cur->vendor, cur->device, NULL);
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index bc8a44bddaa7..27a391da9a98 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -2,15 +2,199 @@
 #include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/irq.h>
+#include <linux/dmi.h>
 #include <asm/numa.h>
 #include "pci.h"
 
+static int __devinit can_skip_ioresource_align(struct dmi_system_id *d)
+{
+        pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
+        printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident);
+        return 0;
+}
+
+static struct dmi_system_id acpi_pciprobe_dmi_table[] = {
+/*
+ * Systems where PCI IO resource ISA alignment can be skipped
+ * when the ISA enable bit in the bridge control is not set
+ */
+        {
+                .callback = can_skip_ioresource_align,
+                .ident = "IBM System x3800",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
+                },
+        },
+        {
+                .callback = can_skip_ioresource_align,
+                .ident = "IBM System x3850",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "x3850"),
+                },
+        },
+        {
+                .callback = can_skip_ioresource_align,
+                .ident = "IBM System x3950",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "x3950"),
+                },
+        },
+        {}
+};
+
+struct pci_root_info {
+        char *name;
+        unsigned int res_num;
+        struct resource *res;
+        struct pci_bus *bus;
+        int busnum;
+};
+
+static acpi_status
+resource_to_addr(struct acpi_resource *resource,
+                        struct acpi_resource_address64 *addr)
+{
+        acpi_status status;
+
+        status = acpi_resource_to_address64(resource, addr);
+        if (ACPI_SUCCESS(status) &&
+            (addr->resource_type == ACPI_MEMORY_RANGE ||
+            addr->resource_type == ACPI_IO_RANGE) &&
+            addr->address_length > 0 &&
+            addr->producer_consumer == ACPI_PRODUCER) {
+                return AE_OK;
+        }
+        return AE_ERROR;
+}
+
+static acpi_status
+count_resource(struct acpi_resource *acpi_res, void *data)
+{
+        struct pci_root_info *info = data;
+        struct acpi_resource_address64 addr;
+        acpi_status status;
+
+        status = resource_to_addr(acpi_res, &addr);
+        if (ACPI_SUCCESS(status))
+                info->res_num++;
+        return AE_OK;
+}
+
+static acpi_status
+setup_resource(struct acpi_resource *acpi_res, void *data)
+{
+        struct pci_root_info *info = data;
+        struct resource *res;
+        struct acpi_resource_address64 addr;
+        acpi_status status;
+        unsigned long flags;
+        struct resource *root;
+
+        status = resource_to_addr(acpi_res, &addr);
+        if (!ACPI_SUCCESS(status))
+                return AE_OK;
+
+        if (addr.resource_type == ACPI_MEMORY_RANGE) {
+                root = &iomem_resource;
+                flags = IORESOURCE_MEM;
+                if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
+                        flags |= IORESOURCE_PREFETCH;
+        } else if (addr.resource_type == ACPI_IO_RANGE) {
+                root = &ioport_resource;
+                flags = IORESOURCE_IO;
+        } else
+                return AE_OK;
+
+        res = &info->res[info->res_num];
+        res->name = info->name;
+        res->flags = flags;
+        res->start = addr.minimum + addr.translation_offset;
+        res->end = res->start + addr.address_length - 1;
+        res->child = NULL;
+
+        if (insert_resource(root, res)) {
+                printk(KERN_ERR "PCI: Failed to allocate 0x%lx-0x%lx "
+                        "from %s for %s\n", (unsigned long) res->start,
+                        (unsigned long) res->end, root->name, info->name);
+        } else {
+                info->bus->resource[info->res_num] = res;
+                info->res_num++;
+        }
+        return AE_OK;
+}
+
+static void
+adjust_transparent_bridge_resources(struct pci_bus *bus)
+{
+        struct pci_dev *dev;
+
+        list_for_each_entry(dev, &bus->devices, bus_list) {
+                int i;
+                u16 class = dev->class >> 8;
+
+                if (class == PCI_CLASS_BRIDGE_PCI && dev->transparent) {
+                        for(i = 3; i < PCI_BUS_NUM_RESOURCES; i++)
+                                dev->subordinate->resource[i] =
+                                                dev->bus->resource[i - 3];
+                }
+        }
+}
+
+static void
+get_current_resources(struct acpi_device *device, int busnum,
+                        struct pci_bus *bus)
+{
+        struct pci_root_info info;
+        size_t size;
+
+        info.bus = bus;
+        info.res_num = 0;
+        acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
+                                &info);
+        if (!info.res_num)
+                return;
+
+        size = sizeof(*info.res) * info.res_num;
+        info.res = kmalloc(size, GFP_KERNEL);
+        if (!info.res)
+                goto res_alloc_fail;
+
+        info.name = kmalloc(12, GFP_KERNEL);
+        if (!info.name)
+                goto name_alloc_fail;
+        sprintf(info.name, "PCI Bus #%02x", busnum);
+
+        info.res_num = 0;
+        acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
+                                &info);
+        if (info.res_num)
+                adjust_transparent_bridge_resources(bus);
+
+        return;
+
+name_alloc_fail:
+        kfree(info.res);
+res_alloc_fail:
+        return;
+}
+
 struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
 {
         struct pci_bus *bus;
         struct pci_sysdata *sd;
         int pxm;
 
+        dmi_check_system(acpi_pciprobe_dmi_table);
+
+        if (domain && !pci_domains_supported) {
+                printk(KERN_WARNING "PCI: Multiple domains not supported "
+                       "(dom %d, bus %d)\n", domain, busnum);
+                return NULL;
+        }
+
         /* Allocate per-root-bus (not per bus) arch-specific data.
          * TODO: leak; this memory is never freed.
          * It's arguable whether it's worth the trouble to care.
@@ -21,12 +205,7 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
                 return NULL;
         }
 
-        if (domain != 0) {
-                printk(KERN_WARNING "PCI: Multiple domains not supported\n");
-                kfree(sd);
-                return NULL;
-        }
-
+        sd->domain = domain;
         sd->node = -1;
 
         pxm = acpi_get_pxm(device->handle);
@@ -47,6 +226,9 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
                 }
         }
 #endif
+
+        if (bus && (pci_probe & PCI_USE__CRS))
+                get_current_resources(device, busnum, bus);
         
         return bus;
 }
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 07d5223442bf..2d71bbc411d2 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -29,12 +29,14 @@ struct pci_raw_ops *raw_pci_ops;
 
 static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
 {
-        return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
+        return raw_pci_ops->read(pci_domain_nr(bus), bus->number,
+                                 devfn, where, size, value);
 }
 
 static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
 {
-        return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
+        return raw_pci_ops->write(pci_domain_nr(bus), bus->number,
+                                  devfn, where, size, value);
 }
 
 struct pci_ops pci_root_ops = {
@@ -287,6 +289,16 @@ static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL685c G1"),
                 },
         },
+#ifdef __i386__
+        {
+                .callback = assign_all_busses,
+                .ident = "Compaq EVO N800c",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "EVO N800c"),
+                },
+        },
+#endif
         {}
 };
 
@@ -426,6 +438,9 @@ char * __devinit  pcibios_setup(char *str)
         } else if (!strcmp(str, "assign-busses")) {
                 pci_probe |= PCI_ASSIGN_ALL_BUSSES;
                 return NULL;
+        } else if (!strcmp(str, "use_crs")) {
+                pci_probe |= PCI_USE__CRS;
+                return NULL;
         } else if (!strcmp(str, "routeirq")) {
                 pci_routeirq = 1;
                 return NULL;
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index c82cbf4c7226..6cff66dd0c91 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -353,6 +353,53 @@ static void __devinit pci_fixup_video(struct pci_dev *pdev)
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
 
+
+static struct dmi_system_id __devinitdata msi_k8t_dmi_table[] = {
+        {
+                .ident = "MSI-K8T-Neo2Fir",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "MSI"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "MS-6702E"),
+                },
+        },
+        {}
+};
+
+/*
+ * The AMD-Athlon64 board MSI "K8T Neo2-FIR" disables the onboard sound
+ * card if a PCI-soundcard is added.
+ *
+ * The BIOS only gives options "DISABLED" and "AUTO". This code sets
+ * the corresponding register-value to enable the soundcard.
+ *
+ * The soundcard is only enabled, if the mainborad is identified
+ * via DMI-tables and the soundcard is detected to be off.
+ */
+static void __devinit pci_fixup_msi_k8t_onboard_sound(struct pci_dev *dev)
+{
+        unsigned char val;
+        if (!dmi_check_system(msi_k8t_dmi_table))
+                return; /* only applies to MSI K8T Neo2-FIR */
+
+        pci_read_config_byte(dev, 0x50, &val);
+        if (val & 0x40) {
+                pci_write_config_byte(dev, 0x50, val & (~0x40));
+
+                /* verify the change for status output */
+                pci_read_config_byte(dev, 0x50, &val);
+                if (val & 0x40)
+                        printk(KERN_INFO "PCI: Detected MSI K8T Neo2-FIR, "
+                                        "can't enable onboard soundcard!\n");
+                else
+                        printk(KERN_INFO "PCI: Detected MSI K8T Neo2-FIR, "
+                                        "enabled onboard soundcard.\n");
+        }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237,
+                pci_fixup_msi_k8t_onboard_sound);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237,
+                pci_fixup_msi_k8t_onboard_sound);
+
 /*
  * Some Toshiba laptops need extra code to enable their TI TSB43AB22/A.
  *
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index bcd2f94b732c..42ba0e2da1a0 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -33,6 +33,15 @@
 
 #include "pci.h"
 
+static int
+skip_isa_ioresource_align(struct pci_dev *dev) {
+
+        if ((pci_probe & PCI_CAN_SKIP_ISA_ALIGN) &&
+            !(dev->bus->bridge_ctl & PCI_BRIDGE_CTL_ISA))
+                return 1;
+        return 0;
+}
+
 /*
  * We need to avoid collisions with `mirrored' VGA ports
  * and other strange ISA hardware, so we always want the
@@ -50,9 +59,13 @@ void
 pcibios_align_resource(void *data, struct resource *res,
                         resource_size_t size, resource_size_t align)
 {
+        struct pci_dev *dev = data;
+
         if (res->flags & IORESOURCE_IO) {
                 resource_size_t start = res->start;
 
+                if (skip_isa_ioresource_align(dev))
+                        return;
                 if (start & 0x300) {
                         start = (start + 0x3ff) & ~0x3ff;
                         res->start = start;
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c
index d98c6b096f8e..c52150fdf82b 100644
--- a/arch/x86/pci/irq.c
+++ b/arch/x86/pci/irq.c
@@ -492,6 +492,26 @@ static int pirq_amd756_set(struct pci_dev *router, struct pci_dev *dev, int pirq
         return 1;
 }
 
+/*
+ * PicoPower PT86C523
+ */
+static int pirq_pico_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+        outb(0x10 + ((pirq - 1) >> 1), 0x24);
+        return ((pirq - 1) & 1) ? (inb(0x26) >> 4) : (inb(0x26) & 0xf);
+}
+
+static int pirq_pico_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
+                        int irq)
+{
+        unsigned int x;
+        outb(0x10 + ((pirq - 1) >> 1), 0x24);
+        x = inb(0x26);
+        x = ((pirq - 1) & 1) ? ((x & 0x0f) | (irq << 4)) : ((x & 0xf0) | (irq));
+        outb(x, 0x26);
+        return 1;
+}
+
 #ifdef CONFIG_PCI_BIOS
 
 static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
@@ -721,6 +741,24 @@ static __init int amd_router_probe(struct irq_router *r, struct pci_dev *router,
         return 1;
 }
                 
+static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+        switch (device) {
+        case PCI_DEVICE_ID_PICOPOWER_PT86C523:
+                r->name = "PicoPower PT86C523";
+                r->get = pirq_pico_get;
+                r->set = pirq_pico_set;
+                return 1;
+
+        case PCI_DEVICE_ID_PICOPOWER_PT86C523BBP:
+                r->name = "PicoPower PT86C523 rev. BB+";
+                r->get = pirq_pico_get;
+                r->set = pirq_pico_set;
+                return 1;
+        }
+        return 0;
+}
+
 static __initdata struct irq_router_handler pirq_routers[] = {
         { PCI_VENDOR_ID_INTEL, intel_router_probe },
         { PCI_VENDOR_ID_AL, ali_router_probe },
@@ -732,6 +770,7 @@ static __initdata struct irq_router_handler pirq_routers[] = {
         { PCI_VENDOR_ID_VLSI, vlsi_router_probe },
         { PCI_VENDOR_ID_SERVERWORKS, serverworks_router_probe },
         { PCI_VENDOR_ID_AMD, amd_router_probe },
+        { PCI_VENDOR_ID_PICOPOWER, pico_router_probe },
         /* Someone with docs needs to add the ATI Radeon IGP */
         { 0, NULL }
 };
diff --git a/arch/x86/pci/pci.h b/arch/x86/pci/pci.h
index 8c66f275756f..ac56d3916c50 100644
--- a/arch/x86/pci/pci.h
+++ b/arch/x86/pci/pci.h
@@ -26,6 +26,8 @@
 #define PCI_ASSIGN_ROMS         0x1000
 #define PCI_BIOS_IRQ_SCAN       0x2000
 #define PCI_ASSIGN_ALL_BUSSES   0x4000
+#define PCI_CAN_SKIP_ISA_ALIGN  0x8000
+#define PCI_USE__CRS            0x10000
 
 extern unsigned int pci_probe;
 extern unsigned long pirq_table_addr;