[ifxmips] Make it possible for boards to disable PCI REQ signals in the PCI controlle...

[openwrt-10.03/.git] / target / linux / ifxmips / files / arch / mips / pci / pci-ifxmips.c

diff --git a/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c b/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c
index 64f37d556415c2c9a35181103468cc7be31e994a..6ff765e85f4c36301e94f7c80231ada9ac113a0a 100644 (file)
--- a/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c
+++ b/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c
@@ -54,6 +54,10 @@ static struct pci_controller ifxmips_pci_controller =
 u32 ifxmips_pci_mapped_cfg;
 int ifxmips_pci_external_clock = 0;
 
+/* Since the PCI REQ pins can be reused for other functionality, make it possible
+   to exclude those from interpretation by the PCI controller */
+int ifxmips_pci_req_mask = 0xf;
+
 static int __init
 ifxmips_pci_set_external_clk(char *str)
 {
@@ -126,7 +130,7 @@ ifxmips_pci_startup(void)
 
        /* enable external 2 PCI masters */
        temp_buffer = ifxmips_r32(PCI_CR_PC_ARB);
-       temp_buffer &= (~(0xf << 16));
+       temp_buffer &= (~(ifxmips_pci_req_mask << 16));
        /* enable internal arbiter */
        temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT);
        /* enable internal PCI master reqest */