powerpc/4xx: Workaround for PPC440EPx/GRx PCI_28 Errata

[linux-2.6-omap-h63xx.git] / include / asm-powerpc / pci-bridge.h

diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
index b95d033ae6e60eceabac04fbe3432b5f2f630d9a..ae2ea803a0f2502daff6e2ffcd24359c1f602675 100644 (file)
--- a/include/asm-powerpc/pci-bridge.h
+++ b/include/asm-powerpc/pci-bridge.h
@@ -92,12 +92,15 @@ struct pci_controller {
         *   anything but the PHB.  Only allow talking to the PHB if this is
         *   set.
         *  BIG_ENDIAN - cfg_addr is a big endian register
+        *  BROKEN_MRM - the 440EPx/GRx chips have an errata that causes hangs on
+        *   the PLB4.  Effectively disable MRM commands by setting this.
         */
 #define PPC_INDIRECT_TYPE_SET_CFG_TYPE         0x00000001
 #define PPC_INDIRECT_TYPE_EXT_REG              0x00000002
 #define PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS 0x00000004
 #define PPC_INDIRECT_TYPE_NO_PCIE_LINK         0x00000008
 #define PPC_INDIRECT_TYPE_BIG_ENDIAN           0x00000010
+#define PPC_INDIRECT_TYPE_BROKEN_MRM           0x00000020
        u32 indirect_type;
 #endif /* !CONFIG_PPC64 */
        /* Currently, we limit ourselves to 1 IO range and 3 mem