Calculate PCI BARMASK11 register value dynamicly, signed off by Ithamar R. Adema

SVN-Revision: 20262

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 e50cb3bdc9453784d95f1d9711ec87638c3b5dc6..64f37d556415c2c9a35181103468cc7be31e994a 100644 (file)
--- a/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c
+++ b/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c
@@ -89,6 +89,17 @@ pcibios_plat_dev_init(struct pci_dev *dev)
        return 0;
 }
 
+static u32 calc_bar11mask(void)
+{
+       u32 mem, bar11mask;
+
+       /* BAR11MASK value depends on available memory on system. */
+       mem = num_physpages * PAGE_SIZE;
+       bar11mask = (0x0ffffff0 & ~((1 << (fls(mem) -1)) -1)) | 8;
+
+       return bar11mask;
+}
+
 static void __init
 ifxmips_pci_startup(void)
 {
@@ -138,7 +149,7 @@ ifxmips_pci_startup(void)
        ifxmips_w32(0x19800000, PCI_CR_FCI_ADDR_MAP6);
        ifxmips_w32(0x19c00000, PCI_CR_FCI_ADDR_MAP7);
        ifxmips_w32(0x1ae00000, PCI_CR_FCI_ADDR_MAP11hg);
-       ifxmips_w32(0x0e000008, PCI_CR_BAR11MASK);
+       ifxmips_w32(calc_bar11mask(), PCI_CR_BAR11MASK);
        ifxmips_w32(0, PCI_CR_PCI_ADDR_MAP11);
        ifxmips_w32(0, PCI_CS_BASE_ADDR1);
 #ifdef CONFIG_SWAP_IO_SPACE