Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc71acc846c577473ada72a46c5ea9c935eca086
Commit: fc71acc846c577473ada72a46c5ea9c935eca086
Parent: 5078ed50712aa3df1099540b524d01075aee653f
Author: Michael Buesch <[EMAIL PROTECTED]>
AuthorDate: Sat Feb 16 18:13:36 2008 +0100
Committer: John W. Linville <[EMAIL PROTECTED]>
CommitDate: Wed Feb 20 20:11:55 2008 -0500
ssb: Fix support for PCI devices behind a SSB->PCI bridge
We must pin all resources and make sure the PCI subsystem
won't relocate us, as the addresses are hardwired into hardware.
Signed-off-by: Michael Buesch <[EMAIL PROTECTED]>
Signed-off-by: John W. Linville <[EMAIL PROTECTED]>
---
drivers/ssb/driver_pcicore.c | 17 ++++++++++++-----
1 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c
index 059452f..6d99a98 100644
--- a/drivers/ssb/driver_pcicore.c
+++ b/drivers/ssb/driver_pcicore.c
@@ -79,6 +79,7 @@ int pcibios_plat_dev_init(struct pci_dev *d)
base = &ssb_pcicore_pcibus_iobase;
else
base = &ssb_pcicore_pcibus_membase;
+ res->flags |= IORESOURCE_PCI_FIXED;
if (res->end) {
size = res->end - res->start + 1;
if (*base & (size - 1))
@@ -101,10 +102,12 @@ int pcibios_plat_dev_init(struct pci_dev *d)
static void __init ssb_fixup_pcibridge(struct pci_dev *dev)
{
+ u8 lat;
+
if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) != 0)
return;
- ssb_printk(KERN_INFO "PCI: fixing up bridge\n");
+ ssb_printk(KERN_INFO "PCI: Fixing up bridge %s\n", pci_name(dev));
/* Enable PCI bridge bus mastering and memory space */
pci_set_master(dev);
@@ -114,7 +117,10 @@ static void __init ssb_fixup_pcibridge(struct pci_dev *dev)
pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
/* Make sure our latency is high enough to handle the devices behind us
*/
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xa8);
+ lat = 168;
+ ssb_printk(KERN_INFO "PCI: Fixing latency timer of device %s to %u\n",
+ pci_name(dev), lat);
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
}
DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_fixup_pcibridge);
@@ -294,14 +300,14 @@ static struct resource ssb_pcicore_mem_resource = {
.name = "SSB PCIcore external memory",
.start = SSB_PCI_DMA,
.end = SSB_PCI_DMA + SSB_PCI_DMA_SZ - 1,
- .flags = IORESOURCE_MEM,
+ .flags = IORESOURCE_MEM | IORESOURCE_PCI_FIXED,
};
static struct resource ssb_pcicore_io_resource = {
.name = "SSB PCIcore external I/O",
.start = 0x100,
.end = 0x7FF,
- .flags = IORESOURCE_IO,
+ .flags = IORESOURCE_IO | IORESOURCE_PCI_FIXED,
};
static struct pci_controller ssb_pcicore_controller = {
@@ -368,7 +374,8 @@ static void ssb_pcicore_init_hostmode(struct ssb_pcicore
*pc)
/* Ok, ready to run, register it to the system.
* The following needs change, if we want to port hostmode
* to non-MIPS platform. */
- set_io_port_base((unsigned long)ioremap_nocache(SSB_PCI_MEM,
0x04000000));
+ ssb_pcicore_controller.io_map_base = (unsigned
long)ioremap_nocache(SSB_PCI_MEM, 0x04000000);
+ set_io_port_base(ssb_pcicore_controller.io_map_base);
/* Give some time to the PCI controller to configure itself with the new
* values. Not waiting at this point causes crashes of the machine. */
mdelay(10);
-
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