From: Joshua Kinard <kumba@xxxxxxxxxx>
Add macros for the two known XBRIDGE revisions commonly found on IP35
hardware. Both macros are sourced from the IA64 copy of bridge.h from
Linux-2.4.18. Additionally, per the XBRIDGE ASIC specification, bit 55
of the Crosstalk address selects whether to use byte-swapping or not on
the XBRIDGE.
Signed-off-by: Joshua Kinard <kumba@xxxxxxxxxx>
---
arch/mips/include/asm/pci/bridge.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/mips/include/asm/pci/bridge.h b/arch/mips/include/asm/pci/bridge.h
index 3c214feab772..f173875b4233 100644
--- a/arch/mips/include/asm/pci/bridge.h
+++ b/arch/mips/include/asm/pci/bridge.h
@@ -484,6 +484,8 @@ struct bridge_widget {
#define BRIDGE_REV_B 0x2
#define BRIDGE_REV_C 0x3
#define BRIDGE_REV_D 0x4
+#define XBRIDGE_REV_A 0x1
+#define XBRIDGE_REV_B 0x2
/* Bridge widget status register bits definition */
#define BRIDGE_STAT_LLP_REC_CNT GENMASK(31, 24)
@@ -937,6 +939,7 @@ struct bridge_err_cmdword_s {
#define PCI64_ATTR_PREC BIT_ULL(58) /* Precise */
#define PCI64_ATTR_VIRTUAL BIT_ULL(57) /* Virtual Request */
#define PCI64_ATTR_BAR BIT_ULL(56) /* Barrier */
+#define PCI64_ATTR_SWAP BIT_ULL(55) /* Byte swap (XBRIDGE) */
#define PCI64_ATTR_RMF_MASK GENMASK_ULL(55, 48)
#define PCI64_ATTR_RMF_SHFT 48
--
2.11.1
