MPC5200: enable snooping of DMA transactions on XLB even if no PCI

[karo-tx-uboot.git] / cpu / mpc5xxx / pci_mpc5200.c

diff --git a/cpu/mpc5xxx/pci_mpc5200.c b/cpu/mpc5xxx/pci_mpc5200.c
index 2cfa11ce272e50e154dc42930a86679e83662dac..2f01d5ce996279e675a7e3398f4db5d8fac427f7 100644 (file)
--- a/cpu/mpc5xxx/pci_mpc5200.c
+++ b/cpu/mpc5xxx/pci_mpc5200.c
@@ -135,17 +135,17 @@ void pci_mpc5xxx_init (struct pci_controller *hose)
        *(vu_long *)MPC5XXX_PCI_BAR1 = CONFIG_PCI_MEMORY_BUS | (1 << 3);
        *(vu_long *)MPC5XXX_PCI_TBATR1 = CONFIG_PCI_MEMORY_PHYS | 1;
 
-       /* Enable snooping for RAM */
-       *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 15);
-       *(vu_long *)(MPC5XXX_XLBARB + 0x70) = CONFIG_PCI_MEMORY_PHYS | 0x1d;
-
        /* Park XLB on PCI */
        *(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~((7 << 8) | (3 << 5));
        *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (3 << 8) | (3 << 5);
 
        /* Disable interrupts from PCI controller */
        *(vu_long *)MPC5XXX_PCI_GSCR &= ~(7 << 12);
-       *(vu_long *)MPC5XXX_PCI_ICR &= ~(7 << 24);
+       *(vu_long *)MPC5XXX_PCI_ICR  &= ~(7 << 24);
+
+       /* Set PCI retry counter to 0 = infinite retry. */
+       /* The default of 255 is too short for slow devices. */
+       *(vu_long *)MPC5XXX_PCI_ICR &= 0xFFFFFF00;
 
        /* Disable initiator windows */
        *(vu_long *)MPC5XXX_PCI_IWCR = 0;