bccf90d6e0
Multiple architectures define this as an empty function, and I'm adding another one as part of the RISC-V port. Add a __weak version of pcibios_fixup_bus() and delete the now-obselete ones in a handful of ports. The only functional change should be that microblaze used to export pcibios_fixup_bus(). None of the other architectures exports this, so I just dropped it. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <hwregs/intr_vect.h>
|
|
|
|
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);
|
|
}
|
|
|
|
resource_size_t
|
|
pcibios_align_resource(void *data, const struct resource *res,
|
|
resource_size_t size, resource_size_t align)
|
|
{
|
|
resource_size_t start = res->start;
|
|
|
|
if ((res->flags & IORESOURCE_IO) && (start & 0x300))
|
|
start = (start + 0x3ff) & ~0x3ff;
|
|
|
|
return 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;
|
|
|
|
if (!dev->msi_enabled)
|
|
pcibios_enable_irq(dev);
|
|
return 0;
|
|
}
|