e31dd6e452
Based on a patch series originally from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
130 lines
2.9 KiB
C
130 lines
2.9 KiB
C
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <asm/arch/hwregs/intr_vect.h>
|
|
|
|
void __devinit pcibios_fixup_bus(struct pci_bus *b)
|
|
{
|
|
}
|
|
|
|
char * __devinit pcibios_setup(char *str)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
void pcibios_set_master(struct pci_dev *dev)
|
|
{
|
|
u8 lat;
|
|
pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
|
|
printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n", pci_name(dev), lat);
|
|
pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
|
|
}
|
|
|
|
int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
|
|
enum pci_mmap_state mmap_state, int write_combine)
|
|
{
|
|
unsigned long prot;
|
|
|
|
/* Leave vm_pgoff as-is, the PCI space address is the physical
|
|
* address on this platform.
|
|
*/
|
|
prot = pgprot_val(vma->vm_page_prot);
|
|
vma->vm_page_prot = __pgprot(prot);
|
|
|
|
/* Write-combine setting is ignored, it is changed via the mtrr
|
|
* interfaces on this platform.
|
|
*/
|
|
if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
|
|
vma->vm_end - vma->vm_start,
|
|
vma->vm_page_prot))
|
|
return -EAGAIN;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
pcibios_align_resource(void *data, struct resource *res,
|
|
resource_size_t size, resource_size_t align)
|
|
{
|
|
if (res->flags & IORESOURCE_IO) {
|
|
resource_size_t start = res->start;
|
|
|
|
if (start & 0x300) {
|
|
start = (start + 0x3ff) & ~0x3ff;
|
|
res->start = start;
|
|
}
|
|
}
|
|
}
|
|
|
|
int pcibios_enable_resources(struct pci_dev *dev, int mask)
|
|
{
|
|
u16 cmd, old_cmd;
|
|
int idx;
|
|
struct resource *r;
|
|
|
|
pci_read_config_word(dev, PCI_COMMAND, &cmd);
|
|
old_cmd = cmd;
|
|
for(idx=0; idx<6; idx++) {
|
|
/* Only set up the requested stuff */
|
|
if (!(mask & (1<<idx)))
|
|
continue;
|
|
|
|
r = &dev->resource[idx];
|
|
if (!r->start && r->end) {
|
|
printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev));
|
|
return -EINVAL;
|
|
}
|
|
if (r->flags & IORESOURCE_IO)
|
|
cmd |= PCI_COMMAND_IO;
|
|
if (r->flags & IORESOURCE_MEM)
|
|
cmd |= PCI_COMMAND_MEMORY;
|
|
}
|
|
if (dev->resource[PCI_ROM_RESOURCE].start)
|
|
cmd |= PCI_COMMAND_MEMORY;
|
|
if (cmd != old_cmd) {
|
|
printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd);
|
|
pci_write_config_word(dev, PCI_COMMAND, cmd);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int pcibios_enable_irq(struct pci_dev *dev)
|
|
{
|
|
dev->irq = EXT_INTR_VECT;
|
|
return 0;
|
|
}
|
|
|
|
int pcibios_enable_device(struct pci_dev *dev, int mask)
|
|
{
|
|
int err;
|
|
|
|
if ((err = pcibios_enable_resources(dev, mask)) < 0)
|
|
return err;
|
|
|
|
return pcibios_enable_irq(dev);
|
|
}
|
|
|
|
int pcibios_assign_resources(void)
|
|
{
|
|
struct pci_dev *dev = NULL;
|
|
int idx;
|
|
struct resource *r;
|
|
|
|
while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
|
|
int class = dev->class >> 8;
|
|
|
|
/* Don't touch classless devices and host bridges */
|
|
if (!class || class == PCI_CLASS_BRIDGE_HOST)
|
|
continue;
|
|
|
|
for(idx=0; idx<6; idx++) {
|
|
r = &dev->resource[idx];
|
|
|
|
if (!r->start && r->end)
|
|
pci_assign_resource(dev, idx);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
EXPORT_SYMBOL(pcibios_assign_resources);
|