Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 805 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
new file mode 100644
index 000000000000..bba140d98b1b
--- /dev/null
+++ b/arch/sparc64/kernel/pci.c
@@ -0,0 +1,805 @@
+/* $Id: pci.c,v 1.39 2002/01/05 01:13:43 davem Exp $
+ * pci.c: UltraSparc PCI controller support.
+ *
+ * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1998, 1999 Eddie C. Dost   (ecd@skynet.be)
+ * Copyright (C) 1999 Jakub Jelinek   (jj@ultra.linux.cz)
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/smp_lock.h>
+#include <linux/init.h>
+
+#include <asm/uaccess.h>
+#include <asm/pbm.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/ebus.h>
+#include <asm/isa.h>
+
+unsigned long pci_memspace_mask = 0xffffffffUL;
+
+#ifndef CONFIG_PCI
+/* A "nop" PCI implementation. */
+asmlinkage int sys_pciconfig_read(unsigned long bus, unsigned long dfn,
+				  unsigned long off, unsigned long len,
+				  unsigned char *buf)
+{
+	return 0;
+}
+asmlinkage int sys_pciconfig_write(unsigned long bus, unsigned long dfn,
+				   unsigned long off, unsigned long len,
+				   unsigned char *buf)
+{
+	return 0;
+}
+#else
+
+/* List of all PCI controllers found in the system. */
+struct pci_controller_info *pci_controller_root = NULL;
+
+/* Each PCI controller found gets a unique index. */
+int pci_num_controllers = 0;
+
+/* At boot time the user can give the kernel a command
+ * line option which controls if and how PCI devices
+ * are reordered at PCI bus probing time.
+ */
+int pci_device_reorder = 0;
+
+volatile int pci_poke_in_progress;
+volatile int pci_poke_cpu = -1;
+volatile int pci_poke_faulted;
+
+static DEFINE_SPINLOCK(pci_poke_lock);
+
+void pci_config_read8(u8 *addr, u8 *ret)
+{
+	unsigned long flags;
+	u8 byte;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduba [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (byte)
+			     : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	if (!pci_poke_faulted)
+		*ret = byte;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_read16(u16 *addr, u16 *ret)
+{
+	unsigned long flags;
+	u16 word;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduha [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (word)
+			     : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	if (!pci_poke_faulted)
+		*ret = word;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_read32(u32 *addr, u32 *ret)
+{
+	unsigned long flags;
+	u32 dword;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduwa [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (dword)
+			     : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	if (!pci_poke_faulted)
+		*ret = dword;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_write8(u8 *addr, u8 val)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "stba %0, [%1] %2\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_write16(u16 *addr, u16 val)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "stha %0, [%1] %2\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_write32(u32 *addr, u32 val)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "stwa %0, [%1] %2\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+/* Probe for all PCI controllers in the system. */
+extern void sabre_init(int, char *);
+extern void psycho_init(int, char *);
+extern void schizo_init(int, char *);
+extern void schizo_plus_init(int, char *);
+extern void tomatillo_init(int, char *);
+
+static struct {
+	char *model_name;
+	void (*init)(int, char *);
+} pci_controller_table[] __initdata = {
+	{ "SUNW,sabre", sabre_init },
+	{ "pci108e,a000", sabre_init },
+	{ "pci108e,a001", sabre_init },
+	{ "SUNW,psycho", psycho_init },
+	{ "pci108e,8000", psycho_init },
+	{ "SUNW,schizo", schizo_init },
+	{ "pci108e,8001", schizo_init },
+	{ "SUNW,schizo+", schizo_plus_init },
+	{ "pci108e,8002", schizo_plus_init },
+	{ "SUNW,tomatillo", tomatillo_init },
+	{ "pci108e,a801", tomatillo_init },
+};
+#define PCI_NUM_CONTROLLER_TYPES (sizeof(pci_controller_table) / \
+				  sizeof(pci_controller_table[0]))
+
+static int __init pci_controller_init(char *model_name, int namelen, int node)
+{
+	int i;
+
+	for (i = 0; i < PCI_NUM_CONTROLLER_TYPES; i++) {
+		if (!strncmp(model_name,
+			     pci_controller_table[i].model_name,
+			     namelen)) {
+			pci_controller_table[i].init(node, model_name);
+			return 1;
+		}
+	}
+	printk("PCI: Warning unknown controller, model name [%s]\n",
+	       model_name);
+	printk("PCI: Ignoring controller...\n");
+
+	return 0;
+}
+
+static int __init pci_is_controller(char *model_name, int namelen, int node)
+{
+	int i;
+
+	for (i = 0; i < PCI_NUM_CONTROLLER_TYPES; i++) {
+		if (!strncmp(model_name,
+			     pci_controller_table[i].model_name,
+			     namelen)) {
+			return 1;
+		}
+	}
+	return 0;
+}
+
+static int __init pci_controller_scan(int (*handler)(char *, int, int))
+{
+	char namebuf[64];
+	int node;
+	int count = 0;
+
+	node = prom_getchild(prom_root_node);
+	while ((node = prom_searchsiblings(node, "pci")) != 0) {
+		int len;
+
+		if ((len = prom_getproperty(node, "model", namebuf, sizeof(namebuf))) > 0 ||
+		    (len = prom_getproperty(node, "compatible", namebuf, sizeof(namebuf))) > 0) {
+			int item_len = 0;
+
+			/* Our value may be a multi-valued string in the
+			 * case of some compatible properties. For sanity,
+			 * only try the first one. */
+
+			while (namebuf[item_len] && len) {
+				len--;
+				item_len++;
+			}
+
+			if (handler(namebuf, item_len, node))
+				count++;
+		}
+
+		node = prom_getsibling(node);
+		if (!node)
+			break;
+	}
+
+	return count;
+}
+
+
+/* Is there some PCI controller in the system?  */
+int __init pcic_present(void)
+{
+	return pci_controller_scan(pci_is_controller);
+}
+
+/* Find each controller in the system, attach and initialize
+ * software state structure for each and link into the
+ * pci_controller_root.  Setup the controller enough such
+ * that bus scanning can be done.
+ */
+static void __init pci_controller_probe(void)
+{
+	printk("PCI: Probing for controllers.\n");
+
+	pci_controller_scan(pci_controller_init);
+}
+
+static void __init pci_scan_each_controller_bus(void)
+{
+	struct pci_controller_info *p;
+
+	for (p = pci_controller_root; p; p = p->next)
+		p->scan_bus(p);
+}
+
+/* Reorder the pci_dev chain, so that onboard devices come first
+ * and then come the pluggable cards.
+ */
+static void __init pci_reorder_devs(void)
+{
+	struct list_head *pci_onboard = &pci_devices;
+	struct list_head *walk = pci_onboard->next;
+
+	while (walk != pci_onboard) {
+		struct pci_dev *pdev = pci_dev_g(walk);
+		struct list_head *walk_next = walk->next;
+
+		if (pdev->irq && (__irq_ino(pdev->irq) & 0x20)) {
+			list_del(walk);
+			list_add(walk, pci_onboard);
+		}
+
+		walk = walk_next;
+	}
+}
+
+extern void clock_probe(void);
+extern void power_init(void);
+
+static int __init pcibios_init(void)
+{
+	pci_controller_probe();
+	if (pci_controller_root == NULL)
+		return 0;
+
+	pci_scan_each_controller_bus();
+
+	if (pci_device_reorder)
+		pci_reorder_devs();
+
+	isa_init();
+	ebus_init();
+	clock_probe();
+	power_init();
+
+	return 0;
+}
+
+subsys_initcall(pcibios_init);
+
+void pcibios_fixup_bus(struct pci_bus *pbus)
+{
+	struct pci_pbm_info *pbm = pbus->sysdata;
+
+	/* Generic PCI bus probing sets these to point at
+	 * &io{port,mem}_resouce which is wrong for us.
+	 */
+	pbus->resource[0] = &pbm->io_space;
+	pbus->resource[1] = &pbm->mem_space;
+}
+
+int pci_claim_resource(struct pci_dev *pdev, int resource)
+{
+	struct pci_pbm_info *pbm = pdev->bus->sysdata;
+	struct resource *res = &pdev->resource[resource];
+	struct resource *root;
+
+	if (!pbm)
+		return -EINVAL;
+
+	if (res->flags & IORESOURCE_IO)
+		root = &pbm->io_space;
+	else
+		root = &pbm->mem_space;
+
+	pbm->parent->resource_adjust(pdev, res, root);
+
+	return request_resource(root, res);
+}
+
+/*
+ * Given the PCI bus a device resides on, try to
+ * find an acceptable resource allocation for a
+ * specific device resource..
+ */
+static int pci_assign_bus_resource(const struct pci_bus *bus,
+	struct pci_dev *dev,
+	struct resource *res,
+	unsigned long size,
+	unsigned long min,
+	int resno)
+{
+	unsigned int type_mask;
+	int i;
+
+	type_mask = IORESOURCE_IO | IORESOURCE_MEM;
+	for (i = 0 ; i < 4; i++) {
+		struct resource *r = bus->resource[i];
+		if (!r)
+			continue;
+
+		/* type_mask must match */
+		if ((res->flags ^ r->flags) & type_mask)
+			continue;
+
+		/* Ok, try it out.. */
+		if (allocate_resource(r, res, size, min, -1, size, NULL, NULL) < 0)
+			continue;
+
+		/* PCI config space updated by caller.  */
+		return 0;
+	}
+	return -EBUSY;
+}
+
+int pci_assign_resource(struct pci_dev *pdev, int resource)
+{
+	struct pcidev_cookie *pcp = pdev->sysdata;
+	struct pci_pbm_info *pbm = pcp->pbm;
+	struct resource *res = &pdev->resource[resource];
+	unsigned long min, size;
+	int err;
+
+	if (res->flags & IORESOURCE_IO)
+		min = pbm->io_space.start + 0x400UL;
+	else
+		min = pbm->mem_space.start;
+
+	size = res->end - res->start + 1;
+
+	err = pci_assign_bus_resource(pdev->bus, pdev, res, size, min, resource);
+
+	if (err < 0) {
+		printk("PCI: Failed to allocate resource %d for %s\n",
+		       resource, pci_name(pdev));
+	} else {
+		/* Update PCI config space. */
+		pbm->parent->base_address_update(pdev, resource);
+	}
+
+	return err;
+}
+
+/* Sort resources by alignment */
+void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
+{
+	int i;
+
+	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+		struct resource *r;
+		struct resource_list *list, *tmp;
+		unsigned long r_align;
+
+		r = &dev->resource[i];
+		r_align = r->end - r->start;
+		
+		if (!(r->flags) || r->parent)
+			continue;
+		if (!r_align) {
+			printk(KERN_WARNING "PCI: Ignore bogus resource %d "
+					    "[%lx:%lx] of %s\n",
+					    i, r->start, r->end, pci_name(dev));
+			continue;
+		}
+		r_align = (i < PCI_BRIDGE_RESOURCES) ? r_align + 1 : r->start;
+		for (list = head; ; list = list->next) {
+			unsigned long align = 0;
+			struct resource_list *ln = list->next;
+			int idx;
+
+			if (ln) {
+				idx = ln->res - &ln->dev->resource[0];
+				align = (idx < PCI_BRIDGE_RESOURCES) ?
+					ln->res->end - ln->res->start + 1 :
+					ln->res->start;
+			}
+			if (r_align > align) {
+				tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
+				if (!tmp)
+					panic("pdev_sort_resources(): "
+					      "kmalloc() failed!\n");
+				tmp->next = ln;
+				tmp->res = r;
+				tmp->dev = dev;
+				list->next = tmp;
+				break;
+			}
+		}
+	}
+}
+
+void pcibios_update_irq(struct pci_dev *pdev, int irq)
+{
+}
+
+void pcibios_align_resource(void *data, struct resource *res,
+			    unsigned long size, unsigned long align)
+{
+}
+
+int pcibios_enable_device(struct pci_dev *pdev, int mask)
+{
+	return 0;
+}
+
+void pcibios_resource_to_bus(struct pci_dev *pdev, struct pci_bus_region *region,
+			     struct resource *res)
+{
+	struct pci_pbm_info *pbm = pdev->bus->sysdata;
+	struct resource zero_res, *root;
+
+	zero_res.start = 0;
+	zero_res.end = 0;
+	zero_res.flags = res->flags;
+
+	if (res->flags & IORESOURCE_IO)
+		root = &pbm->io_space;
+	else
+		root = &pbm->mem_space;
+
+	pbm->parent->resource_adjust(pdev, &zero_res, root);
+
+	region->start = res->start - zero_res.start;
+	region->end = res->end - zero_res.start;
+}
+
+void pcibios_bus_to_resource(struct pci_dev *pdev, struct resource *res,
+			     struct pci_bus_region *region)
+{
+	struct pci_pbm_info *pbm = pdev->bus->sysdata;
+	struct resource *root;
+
+	res->start = region->start;
+	res->end = region->end;
+
+	if (res->flags & IORESOURCE_IO)
+		root = &pbm->io_space;
+	else
+		root = &pbm->mem_space;
+
+	pbm->parent->resource_adjust(pdev, res, root);
+}
+
+char * __init pcibios_setup(char *str)
+{
+	if (!strcmp(str, "onboardfirst")) {
+		pci_device_reorder = 1;
+		return NULL;
+	}
+	if (!strcmp(str, "noreorder")) {
+		pci_device_reorder = 0;
+		return NULL;
+	}
+	return str;
+}
+
+/* Platform support for /proc/bus/pci/X/Y mmap()s. */
+
+/* If the user uses a host-bridge as the PCI device, he may use
+ * this to perform a raw mmap() of the I/O or MEM space behind
+ * that controller.
+ *
+ * This can be useful for execution of x86 PCI bios initialization code
+ * on a PCI card, like the xfree86 int10 stuff does.
+ */
+static int __pci_mmap_make_offset_bus(struct pci_dev *pdev, struct vm_area_struct *vma,
+				      enum pci_mmap_state mmap_state)
+{
+	struct pcidev_cookie *pcp = pdev->sysdata;
+	struct pci_pbm_info *pbm;
+	struct pci_controller_info *p;
+	unsigned long space_size, user_offset, user_size;
+
+	if (!pcp)
+		return -ENXIO;
+	pbm = pcp->pbm;
+	if (!pbm)
+		return -ENXIO;
+
+	p = pbm->parent;
+	if (p->pbms_same_domain) {
+		unsigned long lowest, highest;
+
+		lowest = ~0UL; highest = 0UL;
+		if (mmap_state == pci_mmap_io) {
+			if (p->pbm_A.io_space.flags) {
+				lowest = p->pbm_A.io_space.start;
+				highest = p->pbm_A.io_space.end + 1;
+			}
+			if (p->pbm_B.io_space.flags) {
+				if (lowest > p->pbm_B.io_space.start)
+					lowest = p->pbm_B.io_space.start;
+				if (highest < p->pbm_B.io_space.end + 1)
+					highest = p->pbm_B.io_space.end + 1;
+			}
+			space_size = highest - lowest;
+		} else {
+			if (p->pbm_A.mem_space.flags) {
+				lowest = p->pbm_A.mem_space.start;
+				highest = p->pbm_A.mem_space.end + 1;
+			}
+			if (p->pbm_B.mem_space.flags) {
+				if (lowest > p->pbm_B.mem_space.start)
+					lowest = p->pbm_B.mem_space.start;
+				if (highest < p->pbm_B.mem_space.end + 1)
+					highest = p->pbm_B.mem_space.end + 1;
+			}
+			space_size = highest - lowest;
+		}
+	} else {
+		if (mmap_state == pci_mmap_io) {
+			space_size = (pbm->io_space.end -
+				      pbm->io_space.start) + 1;
+		} else {
+			space_size = (pbm->mem_space.end -
+				      pbm->mem_space.start) + 1;
+		}
+	}
+
+	/* Make sure the request is in range. */
+	user_offset = vma->vm_pgoff << PAGE_SHIFT;
+	user_size = vma->vm_end - vma->vm_start;
+
+	if (user_offset >= space_size ||
+	    (user_offset + user_size) > space_size)
+		return -EINVAL;
+
+	if (p->pbms_same_domain) {
+		unsigned long lowest = ~0UL;
+
+		if (mmap_state == pci_mmap_io) {
+			if (p->pbm_A.io_space.flags)
+				lowest = p->pbm_A.io_space.start;
+			if (p->pbm_B.io_space.flags &&
+			    lowest > p->pbm_B.io_space.start)
+				lowest = p->pbm_B.io_space.start;
+		} else {
+			if (p->pbm_A.mem_space.flags)
+				lowest = p->pbm_A.mem_space.start;
+			if (p->pbm_B.mem_space.flags &&
+			    lowest > p->pbm_B.mem_space.start)
+				lowest = p->pbm_B.mem_space.start;
+		}
+		vma->vm_pgoff = (lowest + user_offset) >> PAGE_SHIFT;
+	} else {
+		if (mmap_state == pci_mmap_io) {
+			vma->vm_pgoff = (pbm->io_space.start +
+					 user_offset) >> PAGE_SHIFT;
+		} else {
+			vma->vm_pgoff = (pbm->mem_space.start +
+					 user_offset) >> PAGE_SHIFT;
+		}
+	}
+
+	return 0;
+}
+
+/* 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 int __pci_mmap_make_offset(struct pci_dev *dev, struct vm_area_struct *vma,
+				  enum pci_mmap_state mmap_state)
+{
+	unsigned long user_offset = vma->vm_pgoff << PAGE_SHIFT;
+	unsigned long user32 = user_offset & pci_memspace_mask;
+	unsigned long largest_base, this_base, addr32;
+	int i;
+
+	if ((dev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
+		return __pci_mmap_make_offset_bus(dev, vma, mmap_state);
+
+	/* Figure out which base address this is for. */
+	largest_base = 0UL;
+	for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
+		struct resource *rp = &dev->resource[i];
+
+		/* Active? */
+		if (!rp->flags)
+			continue;
+
+		/* Same type? */
+		if (i == PCI_ROM_RESOURCE) {
+			if (mmap_state != pci_mmap_mem)
+				continue;
+		} else {
+			if ((mmap_state == pci_mmap_io &&
+			     (rp->flags & IORESOURCE_IO) == 0) ||
+			    (mmap_state == pci_mmap_mem &&
+			     (rp->flags & IORESOURCE_MEM) == 0))
+				continue;
+		}
+
+		this_base = rp->start;
+
+		addr32 = (this_base & PAGE_MASK) & pci_memspace_mask;
+
+		if (mmap_state == pci_mmap_io)
+			addr32 &= 0xffffff;
+
+		if (addr32 <= user32 && this_base > largest_base)
+			largest_base = this_base;
+	}
+
+	if (largest_base == 0UL)
+		return -EINVAL;
+
+	/* Now construct the final physical address. */
+	if (mmap_state == pci_mmap_io)
+		vma->vm_pgoff = (((largest_base & ~0xffffffUL) | user32) >> PAGE_SHIFT);
+	else
+		vma->vm_pgoff = (((largest_base & ~(pci_memspace_mask)) | user32) >> PAGE_SHIFT);
+
+	return 0;
+}
+
+/* Set vm_flags of VMA, as appropriate for this architecture, for a pci device
+ * mapping.
+ */
+static void __pci_mmap_set_flags(struct pci_dev *dev, struct vm_area_struct *vma,
+					    enum pci_mmap_state mmap_state)
+{
+	vma->vm_flags |= (VM_IO | VM_RESERVED);
+}
+
+/* Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
+ * device mapping.
+ */
+static void __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
+					     enum pci_mmap_state mmap_state)
+{
+	/* Our io_remap_page_range/io_remap_pfn_range takes care of this,
+	   do nothing. */
+}
+
+/* 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)
+{
+	int ret;
+
+	ret = __pci_mmap_make_offset(dev, vma, mmap_state);
+	if (ret < 0)
+		return ret;
+
+	__pci_mmap_set_flags(dev, vma, mmap_state);
+	__pci_mmap_set_pgprot(dev, vma, mmap_state);
+
+	ret = io_remap_pfn_range(vma, vma->vm_start,
+				 vma->vm_pgoff,
+				 vma->vm_end - vma->vm_start,
+				 vma->vm_page_prot);
+	if (ret)
+		return ret;
+
+	vma->vm_flags |= VM_IO;
+	return 0;
+}
+
+/* Return the domain nuber for this pci bus */
+
+int pci_domain_nr(struct pci_bus *pbus)
+{
+	struct pci_pbm_info *pbm = pbus->sysdata;
+	int ret;
+
+	if (pbm == NULL || pbm->parent == NULL) {
+		ret = -ENXIO;
+	} else {
+		struct pci_controller_info *p = pbm->parent;
+
+		ret = p->index;
+		if (p->pbms_same_domain == 0)
+			ret = ((ret << 1) +
+			       ((pbm == &pbm->parent->pbm_B) ? 1 : 0));
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(pci_domain_nr);
+
+int pcibios_prep_mwi(struct pci_dev *dev)
+{
+	/* We set correct PCI_CACHE_LINE_SIZE register values for every
+	 * device probed on this platform.  So there is nothing to check
+	 * and this always succeeds.
+	 */
+	return 0;
+}
+
+#endif /* !(CONFIG_PCI) */