svn commit: r238289 - head/sys/mips/nlm

[Jayachandran C.]

Author: jchandra
Date: Mon Jul  9 10:17:06 2012
New Revision: 238289
URL: http://svn.freebsd.org/changeset/base/238289

Log:
  Fix PCIe hardware swap configuration for Netlogic XLP
  
  The last 12 bits of the limit registers have to be set to 1. These
  bits are not significant in bridge BARs and are 0 on read, but the
  bits are valid in the swap limit register and needs to be set.

Modified:
  head/sys/mips/nlm/xlp_pci.c

Modified: head/sys/mips/nlm/xlp_pci.c
==============================================================================
--- head/sys/mips/nlm/xlp_pci.c	Mon Jul  9 09:38:53 2012	(r238288)
+++ head/sys/mips/nlm/xlp_pci.c	Mon Jul  9 10:17:06 2012	(r238289)
@@ -507,13 +507,13 @@ xlp_pcib_hardware_swap_enable(int node, 
 	nlm_write_pci_reg(linkpcibase, PCIE_BYTE_SWAP_MEM_BASE, bar);
 
 	bar = nlm_read_bridge_reg(bbase, BRIDGE_PCIEMEM_LIMIT0 + link);
-	nlm_write_pci_reg(linkpcibase, PCIE_BYTE_SWAP_MEM_LIM, bar);
+	nlm_write_pci_reg(linkpcibase, PCIE_BYTE_SWAP_MEM_LIM, bar | 0xFFF);
 
 	bar = nlm_read_bridge_reg(bbase, BRIDGE_PCIEIO_BASE0 + link);
 	nlm_write_pci_reg(linkpcibase, PCIE_BYTE_SWAP_IO_BASE, bar);
 
 	bar = nlm_read_bridge_reg(bbase, BRIDGE_PCIEIO_LIMIT0 + link);
-	nlm_write_pci_reg(linkpcibase, PCIE_BYTE_SWAP_IO_LIM, bar);
+	nlm_write_pci_reg(linkpcibase, PCIE_BYTE_SWAP_IO_LIM, bar | 0xFFF);
 }
 
 static int