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Diffstat (limited to 'arch/sparc/kernel/pci.c')
-rw-r--r--arch/sparc/kernel/pci.c173
1 files changed, 15 insertions, 158 deletions
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 5ed43828e078..50a0927a84a6 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -20,10 +20,11 @@
#include <linux/irq.h>
#include <linux/init.h>
#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/pgtable.h>
+#include <linux/platform_device.h>
#include <linux/uaccess.h>
-#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/apb.h>
@@ -310,7 +311,7 @@ static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
/* We can't actually use the firmware value, we have
* to read what is in the register right now. One
* reason is that in the case of IDE interfaces the
- * firmware can sample the value before the the IDE
+ * firmware can sample the value before the IDE
* interface is programmed into native mode.
*/
pci_read_config_dword(dev, PCI_CLASS_REVISION, &class);
@@ -552,9 +553,8 @@ static void pci_of_scan_bus(struct pci_pbm_info *pbm,
pci_info(bus, "scan_bus[%pOF] bus no %d\n",
node, bus->number);
- child = NULL;
prev_devfn = -1;
- while ((child = of_get_next_child(node, child)) != NULL) {
+ for_each_child_of_node(node, child) {
if (ofpci_verbose)
pci_info(bus, " * %pOF\n", child);
reg = of_get_property(child, "reg", &reglen);
@@ -593,7 +593,7 @@ show_pciobppath_attr(struct device * dev, struct device_attribute * attr, char *
pdev = to_pci_dev(dev);
dp = pdev->dev.of_node;
- return snprintf (buf, PAGE_SIZE, "%pOF\n", dp);
+ return scnprintf(buf, PAGE_SIZE, "%pOF\n", dp);
}
static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH, show_pciobppath_attr, NULL);
@@ -664,11 +664,10 @@ static void pci_claim_bus_resources(struct pci_bus *bus)
struct pci_dev *dev;
list_for_each_entry(dev, &bus->devices, bus_list) {
+ struct resource *r;
int i;
- for (i = 0; i < PCI_NUM_RESOURCES; i++) {
- struct resource *r = &dev->resource[i];
-
+ pci_dev_for_each_resource(dev, r, i) {
if (r->parent || !r->start || !r->flags)
continue;
@@ -725,15 +724,14 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
int pcibios_enable_device(struct pci_dev *dev, int mask)
{
+ struct resource *res;
u16 cmd, oldcmd;
int i;
pci_read_config_word(dev, PCI_COMMAND, &cmd);
oldcmd = cmd;
- for (i = 0; i < PCI_NUM_RESOURCES; i++) {
- struct resource *res = &dev->resource[i];
-
+ pci_dev_for_each_resource(dev, res, i) {
/* Only set up the requested stuff */
if (!(mask & (1<<i)))
continue;
@@ -752,156 +750,15 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
}
/* 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)
+int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
{
struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
- unsigned long space_size, user_offset, user_size;
-
- if (mmap_state == pci_mmap_io) {
- space_size = resource_size(&pbm->io_space);
- } else {
- space_size = resource_size(&pbm->mem_space);
- }
+ resource_size_t ioaddr = pci_resource_start(pdev, bar);
- /* 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)
+ if (!pbm)
return -EINVAL;
- 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 *pdev,
- struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state)
-{
- unsigned long user_paddr, user_size;
- int i, err;
-
- /* First compute the physical address in vma->vm_pgoff,
- * making sure the user offset is within range in the
- * appropriate PCI space.
- */
- err = __pci_mmap_make_offset_bus(pdev, vma, mmap_state);
- if (err)
- return err;
-
- /* If this is a mapping on a host bridge, any address
- * is OK.
- */
- if ((pdev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
- return err;
-
- /* Otherwise make sure it's in the range for one of the
- * device's resources.
- */
- user_paddr = vma->vm_pgoff << PAGE_SHIFT;
- user_size = vma->vm_end - vma->vm_start;
-
- for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
- struct resource *rp = &pdev->resource[i];
- resource_size_t aligned_end;
-
- /* 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;
- }
-
- /* Align the resource end to the next page address.
- * PAGE_SIZE intentionally added instead of (PAGE_SIZE - 1),
- * because actually we need the address of the next byte
- * after rp->end.
- */
- aligned_end = (rp->end + PAGE_SIZE) & PAGE_MASK;
-
- if ((rp->start <= user_paddr) &&
- (user_paddr + user_size) <= aligned_end)
- break;
- }
-
- if (i > PCI_ROM_RESOURCE)
- return -EINVAL;
-
- return 0;
-}
-
-/* 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_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, int bar,
- 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_pgprot(dev, vma, mmap_state);
-
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
- 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_pgoff += (ioaddr + pbm->io_space.start) >> PAGE_SHIFT;
return 0;
}
@@ -1011,7 +868,7 @@ void pcibios_set_master(struct pci_dev *dev)
}
#ifdef CONFIG_PCI_IOV
-int pcibios_add_device(struct pci_dev *dev)
+int pcibios_device_add(struct pci_dev *dev)
{
struct pci_dev *pdev;
generated by cgit (git 2.34.1) at 2024-05-22 10:02:01 +0000