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); - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html