[POWERPC] Move common PCI code out of pci_32/pci_64

Moved the low hanging fruit that was either identical or close
to it between ppc32 & ppc64 for PCI into pci-common.c

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

3 files changed, 314 insertions, 603 deletions

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 3ca8cfb99dc2..b518b880d2eb 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -51,3 +51,317 @@ int pci_domain_nr(struct pci_bus *bus)
 }
 
 EXPORT_SYMBOL(pci_domain_nr);
+
+#ifdef CONFIG_PPC_OF
+static ssize_t pci_show_devspec(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct pci_dev *pdev;
+        struct device_node *np;
+
+        pdev = to_pci_dev (dev);
+        np = pci_device_to_OF_node(pdev);
+        if (np == NULL || np->full_name == NULL)
+                return 0;
+        return sprintf(buf, "%s", np->full_name);
+}
+static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
+#endif /* CONFIG_PPC_OF */
+
+/* Add sysfs properties */
+void pcibios_add_platform_entries(struct pci_dev *pdev)
+{
+#ifdef CONFIG_PPC_OF
+        device_create_file(&pdev->dev, &dev_attr_devspec);
+#endif /* CONFIG_PPC_OF */
+}
+
+char __init *pcibios_setup(char *str)
+{
+        return str;
+}
+
+/*
+ * Reads the interrupt pin to determine if interrupt is use by card.
+ * If the interrupt is used, then gets the interrupt line from the
+ * openfirmware and sets it in the pci_dev and pci_config line.
+ */
+int pci_read_irq_line(struct pci_dev *pci_dev)
+{
+        struct of_irq oirq;
+        unsigned int virq;
+
+        DBG("Try to map irq for %s...\n", pci_name(pci_dev));
+
+#ifdef DEBUG
+        memset(&oirq, 0xff, sizeof(oirq));
+#endif
+        /* Try to get a mapping from the device-tree */
+        if (of_irq_map_pci(pci_dev, &oirq)) {
+                u8 line, pin;
+
+                /* If that fails, lets fallback to what is in the config
+                 * space and map that through the default controller. We
+                 * also set the type to level low since that's what PCI
+                 * interrupts are. If your platform does differently, then
+                 * either provide a proper interrupt tree or don't use this
+                 * function.
+                 */
+                if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_PIN, &pin))
+                        return -1;
+                if (pin == 0)
+                        return -1;
+                if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &line) ||
+                    line == 0xff) {
+                        return -1;
+                }
+                DBG(" -> no map ! Using irq line %d from PCI config\n", line);
+
+                virq = irq_create_mapping(NULL, line);
+                if (virq != NO_IRQ)
+                        set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
+        } else {
+                DBG(" -> got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
+                    oirq.size, oirq.specifier[0], oirq.specifier[1],
+                    oirq.controller->full_name);
+
+                virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
+                                             oirq.size);
+        }
+        if(virq == NO_IRQ) {
+                DBG(" -> failed to map !\n");
+                return -1;
+        }
+
+        DBG(" -> mapped to linux irq %d\n", virq);
+
+        pci_dev->irq = virq;
+
+        return 0;
+}
+EXPORT_SYMBOL(pci_read_irq_line);
+
+/*
+ * Platform support for /proc/bus/pci/X/Y mmap()s,
+ * modelled on the sparc64 implementation by Dave Miller.
+ *  -- paulus.
+ */
+
+/*
+ * Adjust vm_pgoff of VMA such that it is the physical page offset
+ * corresponding to the 32-bit pci bus offset for DEV requested by the user.
+ *
+ * Basically, the user finds the base address for his device which he wishes
+ * to mmap.  They read the 32-bit value from the config space base register,
+ * add whatever PAGE_SIZE multiple offset they wish, and feed this into the
+ * offset parameter of mmap on /proc/bus/pci/XXX for that device.
+ *
+ * Returns negative error code on failure, zero on success.
+ */
+static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
+                                               resource_size_t *offset,
+                                               enum pci_mmap_state mmap_state)
+{
+        struct pci_controller *hose = pci_bus_to_host(dev->bus);
+        unsigned long io_offset = 0;
+        int i, res_bit;
+
+        if (hose == 0)
+                return NULL;            /* should never happen */
+
+        /* If memory, add on the PCI bridge address offset */
+        if (mmap_state == pci_mmap_mem) {
+#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
+                *offset += hose->pci_mem_offset;
+#endif
+                res_bit = IORESOURCE_MEM;
+        } else {
+                io_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
+                *offset += io_offset;
+                res_bit = IORESOURCE_IO;
+        }
+
+        /*
+         * Check that the offset requested corresponds to one of the
+         * resources of the device.
+         */
+        for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
+                struct resource *rp = &dev->resource[i];
+                int flags = rp->flags;
+
+                /* treat ROM as memory (should be already) */
+                if (i == PCI_ROM_RESOURCE)
+                        flags |= IORESOURCE_MEM;
+
+                /* Active and same type? */
+                if ((flags & res_bit) == 0)
+                        continue;
+
+                /* In the range of this resource? */
+                if (*offset < (rp->start & PAGE_MASK) || *offset > rp->end)
+                        continue;
+
+                /* found it! construct the final physical address */
+                if (mmap_state == pci_mmap_io)
+                        *offset += hose->io_base_phys - io_offset;
+                return rp;
+        }
+
+        return NULL;
+}
+
+/*
+ * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
+ * device mapping.
+ */
+static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
+                                      pgprot_t protection,
+                                      enum pci_mmap_state mmap_state,
+                                      int write_combine)
+{
+        unsigned long prot = pgprot_val(protection);
+
+        /* Write combine is always 0 on non-memory space mappings. On
+         * memory space, if the user didn't pass 1, we check for a
+         * "prefetchable" resource. This is a bit hackish, but we use
+         * this to workaround the inability of /sysfs to provide a write
+         * combine bit
+         */
+        if (mmap_state != pci_mmap_mem)
+                write_combine = 0;
+        else if (write_combine == 0) {
+                if (rp->flags & IORESOURCE_PREFETCH)
+                        write_combine = 1;
+        }
+
+        /* XXX would be nice to have a way to ask for write-through */
+        prot |= _PAGE_NO_CACHE;
+        if (write_combine)
+                prot &= ~_PAGE_GUARDED;
+        else
+                prot |= _PAGE_GUARDED;
+
+        return __pgprot(prot);
+}
+
+/*
+ * This one is used by /dev/mem and fbdev who have no clue about the
+ * PCI device, it tries to find the PCI device first and calls the
+ * above routine
+ */
+pgprot_t pci_phys_mem_access_prot(struct file *file,
+                                  unsigned long pfn,
+                                  unsigned long size,
+                                  pgprot_t protection)
+{
+        struct pci_dev *pdev = NULL;
+        struct resource *found = NULL;
+        unsigned long prot = pgprot_val(protection);
+        unsigned long offset = pfn << PAGE_SHIFT;
+        int i;
+
+        if (page_is_ram(pfn))
+                return __pgprot(prot);
+
+        prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
+
+        for_each_pci_dev(pdev) {
+                for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
+                        struct resource *rp = &pdev->resource[i];
+                        int flags = rp->flags;
+
+                        /* Active and same type? */
+                        if ((flags & IORESOURCE_MEM) == 0)
+                                continue;
+                        /* In the range of this resource? */
+                        if (offset < (rp->start & PAGE_MASK) ||
+                            offset > rp->end)
+                                continue;
+                        found = rp;
+                        break;
+                }
+                if (found)
+                        break;
+        }
+        if (found) {
+                if (found->flags & IORESOURCE_PREFETCH)
+                        prot &= ~_PAGE_GUARDED;
+                pci_dev_put(pdev);
+        }
+
+        DBG("non-PCI map for %lx, prot: %lx\n", offset, prot);
+
+        return __pgprot(prot);
+}
+
+
+/*
+ * Perform the actual remap of the pages for a PCI device mapping, as
+ * appropriate for this architecture.  The region in the process to map
+ * is described by vm_start and vm_end members of VMA, the base physical
+ * address is found in vm_pgoff.
+ * The pci device structure is provided so that architectures may make mapping
+ * decisions on a per-device or per-bus basis.
+ *
+ * Returns a negative error code on failure, zero on success.
+ */
+int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+                        enum pci_mmap_state mmap_state, int write_combine)
+{
+        resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
+        struct resource *rp;
+        int ret;
+
+        rp = __pci_mmap_make_offset(dev, &offset, mmap_state);
+        if (rp == NULL)
+                return -EINVAL;
+
+        vma->vm_pgoff = offset >> PAGE_SHIFT;
+        vma->vm_page_prot = __pci_mmap_set_pgprot(dev, rp,
+                                                  vma->vm_page_prot,
+                                                  mmap_state, write_combine);
+
+        ret = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+                               vma->vm_end - vma->vm_start, vma->vm_page_prot);
+
+        return ret;
+}
+
+void pci_resource_to_user(const struct pci_dev *dev, int bar,
+                          const struct resource *rsrc,
+                          resource_size_t *start, resource_size_t *end)
+{
+        struct pci_controller *hose = pci_bus_to_host(dev->bus);
+        resource_size_t offset = 0;
+
+        if (hose == NULL)
+                return;
+
+        if (rsrc->flags & IORESOURCE_IO)
+                offset = (unsigned long)hose->io_base_virt - _IO_BASE;
+
+        /* We pass a fully fixed up address to userland for MMIO instead of
+         * a BAR value because X is lame and expects to be able to use that
+         * to pass to /dev/mem !
+         *
+         * That means that we'll have potentially 64 bits values where some
+         * userland apps only expect 32 (like X itself since it thinks only
+         * Sparc has 64 bits MMIO) but if we don't do that, we break it on
+         * 32 bits CHRPs :-(
+         *
+         * Hopefully, the sysfs insterface is immune to that gunk. Once X
+         * has been fixed (and the fix spread enough), we can re-enable the
+         * 2 lines below and pass down a BAR value to userland. In that case
+         * we'll also have to re-enable the matching code in
+         * __pci_mmap_make_offset().
+         *
+         * BenH.
+         */
+#if 0
+        else if (rsrc->flags & IORESOURCE_MEM)
+                offset = hose->pci_mem_offset;
+#endif
+
+        *start = rsrc->start - offset;
+        *end = rsrc->end - offset;
+}
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index c81ffa282977..3dd931ecce91 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -1028,34 +1028,12 @@ pci_create_OF_bus_map(void)
         }
 }
 
-static ssize_t pci_show_devspec(struct device *dev, struct device_attribute *attr, char *buf)
-{
-        struct pci_dev *pdev;
-        struct device_node *np;
-
-        pdev = to_pci_dev (dev);
-        np = pci_device_to_OF_node(pdev);
-        if (np == NULL || np->full_name == NULL)
-                return 0;
-        return sprintf(buf, "%s", np->full_name);
-}
-static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
-
 #else /* CONFIG_PPC_OF */
 void pcibios_make_OF_bus_map(void)
 {
 }
 #endif /* CONFIG_PPC_OF */
 
-/* Add sysfs properties */
-void pcibios_add_platform_entries(struct pci_dev *pdev)
-{
-#ifdef CONFIG_PPC_OF
-        device_create_file(&pdev->dev, &dev_attr_devspec);
-#endif /* CONFIG_PPC_OF */
-}
-
-
 #ifdef CONFIG_PPC_PMAC
 /*
  * This set of routines checks for PCI<->PCI bridges that have closed
@@ -1390,11 +1368,6 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
         }
 }
 
-char __init *pcibios_setup(char *str)
-{
-        return str;
-}
-
 /* the next one is stolen from the alpha port... */
 void __init
 pcibios_update_irq(struct pci_dev *dev, int irq)
@@ -1403,64 +1376,6 @@ pcibios_update_irq(struct pci_dev *dev, int irq)
         /* XXX FIXME - update OF device tree node interrupt property */
 }
 
-#ifdef CONFIG_PPC_MERGE
-/* XXX This is a copy of the ppc64 version. This is temporary until we start
- * merging the 2 PCI layers
- */
-/*
- * Reads the interrupt pin to determine if interrupt is use by card.
- * If the interrupt is used, then gets the interrupt line from the
- * openfirmware and sets it in the pci_dev and pci_config line.
- */
-int pci_read_irq_line(struct pci_dev *pci_dev)
-{
-        struct of_irq oirq;
-        unsigned int virq;
-
-        DBG("Try to map irq for %s...\n", pci_name(pci_dev));
-
-        /* Try to get a mapping from the device-tree */
-        if (of_irq_map_pci(pci_dev, &oirq)) {
-                u8 line, pin;
-
-                /* If that fails, lets fallback to what is in the config
-                 * space and map that through the default controller. We
-                 * also set the type to level low since that's what PCI
-                 * interrupts are. If your platform does differently, then
-                 * either provide a proper interrupt tree or don't use this
-                 * function.
-                 */
-                if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_PIN, &pin))
-                        return -1;
-                if (pin == 0)
-                        return -1;
-                if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &line) ||
-                    line == 0xff) {
-                        return -1;
-                }
-                DBG(" -> no map ! Using irq line %d from PCI config\n", line);
-
-                virq = irq_create_mapping(NULL, line);
-                if (virq != NO_IRQ)
-                        set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
-        } else {
-                DBG(" -> got one, spec %d cells (0x%08x...) on %s\n",
-                    oirq.size, oirq.specifier[0], oirq.controller->full_name);
-
-                virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
-                                             oirq.size);
-        }
-        if(virq == NO_IRQ) {
-                DBG(" -> failed to map !\n");
-                return -1;
-        }
-        pci_dev->irq = virq;
-
-        return 0;
-}
-EXPORT_SYMBOL(pci_read_irq_line);
-#endif /* CONFIG_PPC_MERGE */
-
 int pcibios_enable_device(struct pci_dev *dev, int mask)
 {
         u16 cmd, old_cmd;
@@ -1503,176 +1418,6 @@ pci_bus_to_hose(int bus)
         return NULL;
 }
 
-static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
-                                               resource_size_t *offset,
-                                               enum pci_mmap_state mmap_state)
-{
-        struct pci_controller *hose = pci_bus_to_host(dev->bus);
-        unsigned long io_offset = 0;
-        int i, res_bit;
-
-        if (hose == 0)
-                return NULL;            /* should never happen */
-
-        /* If memory, add on the PCI bridge address offset */
-        if (mmap_state == pci_mmap_mem) {
-#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
-                *offset += hose->pci_mem_offset;
-#endif
-                res_bit = IORESOURCE_MEM;
-        } else {
-                io_offset = hose->io_base_virt - (void __iomem *)_IO_BASE;
-                *offset += io_offset;
-                res_bit = IORESOURCE_IO;
-        }
-
-        /*
-         * Check that the offset requested corresponds to one of the
-         * resources of the device.
-         */
-        for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
-                struct resource *rp = &dev->resource[i];
-                int flags = rp->flags;
-
-                /* treat ROM as memory (should be already) */
-                if (i == PCI_ROM_RESOURCE)
-                        flags |= IORESOURCE_MEM;
-
-                /* Active and same type? */
-                if ((flags & res_bit) == 0)
-                        continue;
-
-                /* In the range of this resource? */
-                if (*offset < (rp->start & PAGE_MASK) || *offset > rp->end)
-                        continue;
-
-                /* found it! construct the final physical address */
-                if (mmap_state == pci_mmap_io)
-                        *offset += hose->io_base_phys - io_offset;
-                return rp;
-        }
-
-        return NULL;
-}
-
-/*
- * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
- * device mapping.
- */
-static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
-                                      pgprot_t protection,
-                                      enum pci_mmap_state mmap_state,
-                                      int write_combine)
-{
-        unsigned long prot = pgprot_val(protection);
-
-        /* Write combine is always 0 on non-memory space mappings. On
-         * memory space, if the user didn't pass 1, we check for a
-         * "prefetchable" resource. This is a bit hackish, but we use
-         * this to workaround the inability of /sysfs to provide a write
-         * combine bit
-         */
-        if (mmap_state != pci_mmap_mem)
-                write_combine = 0;
-        else if (write_combine == 0) {
-                if (rp->flags & IORESOURCE_PREFETCH)
-                        write_combine = 1;
-        }
-
-        /* XXX would be nice to have a way to ask for write-through */
-        prot |= _PAGE_NO_CACHE;
-        if (write_combine)
-                prot &= ~_PAGE_GUARDED;
-        else
-                prot |= _PAGE_GUARDED;
-
-        return __pgprot(prot);
-}
-
-/*
- * This one is used by /dev/mem and fbdev who have no clue about the
- * PCI device, it tries to find the PCI device first and calls the
- * above routine
- */
-pgprot_t pci_phys_mem_access_prot(struct file *file,
-                                  unsigned long pfn,
-                                  unsigned long size,
-                                  pgprot_t protection)
-{
-        struct pci_dev *pdev = NULL;
-        struct resource *found = NULL;
-        unsigned long prot = pgprot_val(protection);
-        unsigned long offset = pfn << PAGE_SHIFT;
-        int i;
-
-        if (page_is_ram(pfn))
-                return __pgprot(prot);
-
-        prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
-
-        for_each_pci_dev(pdev) {
-                for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
-                        struct resource *rp = &pdev->resource[i];
-                        int flags = rp->flags;
-
-                        /* Active and same type? */
-                        if ((flags & IORESOURCE_MEM) == 0)
-                                continue;
-                        /* In the range of this resource? */
-                        if (offset < (rp->start & PAGE_MASK) ||
-                            offset > rp->end)
-                                continue;
-                        found = rp;
-                        break;
-                }
-                if (found)
-                        break;
-        }
-        if (found) {
-                if (found->flags & IORESOURCE_PREFETCH)
-                        prot &= ~_PAGE_GUARDED;
-                pci_dev_put(pdev);
-        }
-
-        DBG("non-PCI map for %lx, prot: %lx\n", offset, prot);
-
-        return __pgprot(prot);
-}
-
-
-/*
- * Perform the actual remap of the pages for a PCI device mapping, as
- * appropriate for this architecture.  The region in the process to map
- * is described by vm_start and vm_end members of VMA, the base physical
- * address is found in vm_pgoff.
- * The pci device structure is provided so that architectures may make mapping
- * decisions on a per-device or per-bus basis.
- *
- * Returns a negative error code on failure, zero on success.
- */
-int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
-                        enum pci_mmap_state mmap_state,
-                        int write_combine)
-{
-        resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
-        struct resource *rp;
-        int ret;
-
-        rp = __pci_mmap_make_offset(dev, &offset, mmap_state);
-        if (rp == NULL)
-                return -EINVAL;
-
-        vma->vm_pgoff = offset >> PAGE_SHIFT;
-        vma->vm_page_prot = __pci_mmap_set_pgprot(dev, rp,
-                                                  vma->vm_page_prot,
-                                                  mmap_state, write_combine);
-
-        ret = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
-                               vma->vm_end - vma->vm_start, vma->vm_page_prot);
-
-        return ret;
-}
-
 /* Provide information on locations of various I/O regions in physical
  * memory.  Do this on a per-card basis so that we choose the right
  * root bridge.
@@ -1715,45 +1460,6 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
         return result;
 }
 
-void pci_resource_to_user(const struct pci_dev *dev, int bar,
-                          const struct resource *rsrc,
-                          resource_size_t *start, resource_size_t *end)
-{
-        struct pci_controller *hose = pci_bus_to_host(dev->bus);
-        resource_size_t offset = 0;
-
-        if (hose == NULL)
-                return;
-
-        if (rsrc->flags & IORESOURCE_IO)
-                offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-
-        /* We pass a fully fixed up address to userland for MMIO instead of
-         * a BAR value because X is lame and expects to be able to use that
-         * to pass to /dev/mem !
-         *
-         * That means that we'll have potentially 64 bits values where some
-         * userland apps only expect 32 (like X itself since it thinks only
-         * Sparc has 64 bits MMIO) but if we don't do that, we break it on
-         * 32 bits CHRPs :-(
-         *
-         * Hopefully, the sysfs insterface is immune to that gunk. Once X
-         * has been fixed (and the fix spread enough), we can re-enable the
-         * 2 lines below and pass down a BAR value to userland. In that case
-         * we'll also have to re-enable the matching code in
-         * __pci_mmap_make_offset().
-         *
-         * BenH.
-         */
-#if 0
-        else if (rsrc->flags & IORESOURCE_MEM)
-                offset = hose->pci_mem_offset;
-#endif
-
-        *start = rsrc->start - offset;
-        *end = rsrc->end - offset;
-}
-
 unsigned long pci_address_to_pio(phys_addr_t address)
 {
         struct pci_controller* hose = hose_head;
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 57bdcd88f04a..384d2752fe60 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -601,11 +601,6 @@ static int __init pcibios_init(void)
 
 subsys_initcall(pcibios_init);
 
-char __init *pcibios_setup(char *str)
-{
-        return str;
-}
-
 int pcibios_enable_device(struct pci_dev *dev, int mask)
 {
         u16 cmd, oldcmd;
@@ -647,211 +642,6 @@ int pci_proc_domain(struct pci_bus *bus)
         }
 }
 
-/*
- * Platform support for /proc/bus/pci/X/Y mmap()s,
- * modelled on the sparc64 implementation by Dave Miller.
- *  -- paulus.
- */
-
-/*
- * Adjust vm_pgoff of VMA such that it is the physical page offset
- * corresponding to the 32-bit pci bus offset for DEV requested by the user.
- *
- * Basically, the user finds the base address for his device which he wishes
- * to mmap.  They read the 32-bit value from the config space base register,
- * add whatever PAGE_SIZE multiple offset they wish, and feed this into the
- * offset parameter of mmap on /proc/bus/pci/XXX for that device.
- *
- * Returns negative error code on failure, zero on success.
- */
-static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
-                                               resource_size_t *offset,
-                                               enum pci_mmap_state mmap_state)
-{
-        struct pci_controller *hose = pci_bus_to_host(dev->bus);
-        unsigned long io_offset = 0;
-        int i, res_bit;
-
-        if (hose == 0)
-                return NULL;            /* should never happen */
-
-        /* If memory, add on the PCI bridge address offset */
-        if (mmap_state == pci_mmap_mem) {
-#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
-                *offset += hose->pci_mem_offset;
-#endif
-                res_bit = IORESOURCE_MEM;
-        } else {
-                io_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-                *offset += io_offset;
-                res_bit = IORESOURCE_IO;
-        }
-
-        /*
-         * Check that the offset requested corresponds to one of the
-         * resources of the device.
-         */
-        for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
-                struct resource *rp = &dev->resource[i];
-                int flags = rp->flags;
-
-                /* treat ROM as memory (should be already) */
-                if (i == PCI_ROM_RESOURCE)
-                        flags |= IORESOURCE_MEM;
-
-                /* Active and same type? */
-                if ((flags & res_bit) == 0)
-                        continue;
-
-                /* In the range of this resource? */
-                if (*offset < (rp->start & PAGE_MASK) || *offset > rp->end)
-                        continue;
-
-                /* found it! construct the final physical address */
-                if (mmap_state == pci_mmap_io)
-                        *offset += hose->io_base_phys - io_offset;
-                return rp;
-        }
-
-        return NULL;
-}
-
-/*
- * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
- * device mapping.
- */
-static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
-                                      pgprot_t protection,
-                                      enum pci_mmap_state mmap_state,
-                                      int write_combine)
-{
-        unsigned long prot = pgprot_val(protection);
-
-        /* Write combine is always 0 on non-memory space mappings. On
-         * memory space, if the user didn't pass 1, we check for a
-         * "prefetchable" resource. This is a bit hackish, but we use
-         * this to workaround the inability of /sysfs to provide a write
-         * combine bit
-         */
-        if (mmap_state != pci_mmap_mem)
-                write_combine = 0;
-        else if (write_combine == 0) {
-                if (rp->flags & IORESOURCE_PREFETCH)
-                        write_combine = 1;
-        }
-
-        /* XXX would be nice to have a way to ask for write-through */
-        prot |= _PAGE_NO_CACHE;
-        if (write_combine)
-                prot &= ~_PAGE_GUARDED;
-        else
-                prot |= _PAGE_GUARDED;
-
-        return __pgprot(prot);
-}
-
-/*
- * This one is used by /dev/mem and fbdev who have no clue about the
- * PCI device, it tries to find the PCI device first and calls the
- * above routine
- */
-pgprot_t pci_phys_mem_access_prot(struct file *file,
-                                  unsigned long pfn,
-                                  unsigned long size,
-                                  pgprot_t protection)
-{
-        struct pci_dev *pdev = NULL;
-        struct resource *found = NULL;
-        unsigned long prot = pgprot_val(protection);
-        unsigned long offset = pfn << PAGE_SHIFT;
-        int i;
-
-        if (page_is_ram(pfn))
-                return __pgprot(prot);
-
-        prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
-
-        for_each_pci_dev(pdev) {
-                for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
-                        struct resource *rp = &pdev->resource[i];
-                        int flags = rp->flags;
-
-                        /* Active and same type? */
-                        if ((flags & IORESOURCE_MEM) == 0)
-                                continue;
-                        /* In the range of this resource? */
-                        if (offset < (rp->start & PAGE_MASK) ||
-                            offset > rp->end)
-                                continue;
-                        found = rp;
-                        break;
-                }
-                if (found)
-                        break;
-        }
-        if (found) {
-                if (found->flags & IORESOURCE_PREFETCH)
-                        prot &= ~_PAGE_GUARDED;
-                pci_dev_put(pdev);
-        }
-
-        DBG("non-PCI map for %lx, prot: %lx\n", offset, prot);
-
-        return __pgprot(prot);
-}
-
-
-/*
- * Perform the actual remap of the pages for a PCI device mapping, as
- * appropriate for this architecture.  The region in the process to map
- * is described by vm_start and vm_end members of VMA, the base physical
- * address is found in vm_pgoff.
- * The pci device structure is provided so that architectures may make mapping
- * decisions on a per-device or per-bus basis.
- *
- * Returns a negative error code on failure, zero on success.
- */
-int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
-                        enum pci_mmap_state mmap_state, int write_combine)
-{
-        resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
-        struct resource *rp;
-        int ret;
-
-        rp = __pci_mmap_make_offset(dev, &offset, mmap_state);
-        if (rp == NULL)
-                return -EINVAL;
-
-        vma->vm_pgoff = offset >> PAGE_SHIFT;
-        vma->vm_page_prot = __pci_mmap_set_pgprot(dev, rp,
-                                                  vma->vm_page_prot,
-                                                  mmap_state, write_combine);
-
-        ret = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
-                               vma->vm_end - vma->vm_start, vma->vm_page_prot);
-
-        return ret;
-}
-
-static ssize_t pci_show_devspec(struct device *dev,
-                struct device_attribute *attr, char *buf)
-{
-        struct pci_dev *pdev;
-        struct device_node *np;
-
-        pdev = to_pci_dev (dev);
-        np = pci_device_to_OF_node(pdev);
-        if (np == NULL || np->full_name == NULL)
-                return 0;
-        return sprintf(buf, "%s", np->full_name);
-}
-static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
-
-void pcibios_add_platform_entries(struct pci_dev *pdev)
-{
-        device_create_file(&pdev->dev, &dev_attr_devspec);
-}
-
 void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
                                             struct device_node *dev, int prim)
 {
@@ -1167,105 +957,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 }
 EXPORT_SYMBOL(pcibios_fixup_bus);
 
-/*
- * Reads the interrupt pin to determine if interrupt is use by card.
- * If the interrupt is used, then gets the interrupt line from the 
- * openfirmware and sets it in the pci_dev and pci_config line.
- */
-int pci_read_irq_line(struct pci_dev *pci_dev)
-{
-        struct of_irq oirq;
-        unsigned int virq;
-
-        DBG("Try to map irq for %s...\n", pci_name(pci_dev));
-
-#ifdef DEBUG
-        memset(&oirq, 0xff, sizeof(oirq));
-#endif
-        /* Try to get a mapping from the device-tree */
-        if (of_irq_map_pci(pci_dev, &oirq)) {
-                u8 line, pin;
-
-                /* If that fails, lets fallback to what is in the config
-                 * space and map that through the default controller. We
-                 * also set the type to level low since that's what PCI
-                 * interrupts are. If your platform does differently, then
-                 * either provide a proper interrupt tree or don't use this
-                 * function.
-                 */
-                if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_PIN, &pin))
-                        return -1;
-                if (pin == 0)
-                        return -1;
-                if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &line) ||
-                    line == 0xff) {
-                        return -1;
-                }
-                DBG(" -> no map ! Using irq line %d from PCI config\n", line);
-
-                virq = irq_create_mapping(NULL, line);
-                if (virq != NO_IRQ)
-                        set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
-        } else {
-                DBG(" -> got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
-                    oirq.size, oirq.specifier[0], oirq.specifier[1],
-                    oirq.controller->full_name);
-
-                virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
-                                             oirq.size);
-        }
-        if(virq == NO_IRQ) {
-                DBG(" -> failed to map !\n");
-                return -1;
-        }
-
-        DBG(" -> mapped to linux irq %d\n", virq);
-
-        pci_dev->irq = virq;
-
-        return 0;
-}
-EXPORT_SYMBOL(pci_read_irq_line);
-
-void pci_resource_to_user(const struct pci_dev *dev, int bar,
-                          const struct resource *rsrc,
-                          resource_size_t *start, resource_size_t *end)
-{
-        struct pci_controller *hose = pci_bus_to_host(dev->bus);
-        resource_size_t offset = 0;
-
-        if (hose == NULL)
-                return;
-
-        if (rsrc->flags & IORESOURCE_IO)
-                offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-
-        /* We pass a fully fixed up address to userland for MMIO instead of
-         * a BAR value because X is lame and expects to be able to use that
-         * to pass to /dev/mem !
-         *
-         * That means that we'll have potentially 64 bits values where some
-         * userland apps only expect 32 (like X itself since it thinks only
-         * Sparc has 64 bits MMIO) but if we don't do that, we break it on
-         * 32 bits CHRPs :-(
-         *
-         * Hopefully, the sysfs insterface is immune to that gunk. Once X
-         * has been fixed (and the fix spread enough), we can re-enable the
-         * 2 lines below and pass down a BAR value to userland. In that case
-         * we'll also have to re-enable the matching code in
-         * __pci_mmap_make_offset().
-         *
-         * BenH.
-         */
-#if 0
-        else if (rsrc->flags & IORESOURCE_MEM)
-                offset = hose->pci_mem_offset;
-#endif
-
-        *start = rsrc->start - offset;
-        *end = rsrc->end - offset;
-}
-
 struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
 {
         if (!have_of)