[brcm63xx] add missing patch which fakes a cardbus controller on top of PCI, thanks...

[openwrt/svn-archive/archive.git] / target / linux / brcm63xx / files / arch / mips / pci / pci-bcm63xx.c

diff --git a/target/linux/brcm63xx/files/arch/mips/pci/pci-bcm63xx.c b/target/linux/brcm63xx/files/arch/mips/pci/pci-bcm63xx.c
index 52bac8e56ea7498715d0e06ee13c0de0e5c86c64..601700dfde5519f507355d4759508188773337bf 100644 (file)
--- a/target/linux/brcm63xx/files/arch/mips/pci/pci-bcm63xx.c
+++ b/target/linux/brcm63xx/files/arch/mips/pci/pci-bcm63xx.c
@@ -28,7 +28,11 @@ static struct resource bcm_pci_mem_resource = {
 static struct resource bcm_pci_io_resource = {
        .name   = "bcm63xx PCI IO space",
        .start  = BCM_PCI_IO_BASE_PA,
+#ifdef CONFIG_CARDBUS
+       .end    = BCM_PCI_IO_HALF_PA,
+#else
        .end    = BCM_PCI_IO_END_PA,
+#endif
        .flags  = IORESOURCE_IO
 };
 
@@ -38,6 +42,33 @@ struct pci_controller bcm63xx_controller = {
        .mem_resource   = &bcm_pci_mem_resource,
 };
 
+/*
+ * We handle cardbus  via a fake Cardbus bridge,  memory and io spaces
+ * have to be  clearly separated from PCI one  since we have different
+ * memory decoder.
+ */
+#ifdef CONFIG_CARDBUS
+static struct resource bcm_cb_mem_resource = {
+       .name   = "bcm63xx Cardbus memory space",
+       .start  = BCM_CB_MEM_BASE_PA,
+       .end    = BCM_CB_MEM_END_PA,
+       .flags  = IORESOURCE_MEM
+};
+
+static struct resource bcm_cb_io_resource = {
+       .name   = "bcm63xx Cardbus IO space",
+       .start  = BCM_PCI_IO_HALF_PA + 1,
+       .end    = BCM_PCI_IO_END_PA,
+       .flags  = IORESOURCE_IO
+};
+
+struct pci_controller bcm63xx_cb_controller = {
+       .pci_ops        = &bcm63xx_cb_ops,
+       .io_resource    = &bcm_cb_io_resource,
+       .mem_resource   = &bcm_cb_mem_resource,
+};
+#endif
+
 static u32 bcm63xx_int_cfg_readl(u32 reg)
 {
        u32 tmp;
@@ -98,8 +129,17 @@ static int __init bcm63xx_pci_init(void)
        val |= (CARDBUS_PCI_IDSEL << PCMCIA_C1_CBIDSEL_SHIFT);
        bcm_pcmcia_writel(val, PCMCIA_C1_REG);
 
+#ifdef CONFIG_CARDBUS
+       /* setup local bus to PCI access (Cardbus memory) */
+       val = BCM_CB_MEM_BASE_PA & MPI_L2P_BASE_MASK;
+       bcm_mpi_writel(val, MPI_L2PMEMBASE2_REG);
+       bcm_mpi_writel(~(BCM_CB_MEM_SIZE - 1), MPI_L2PMEMRANGE2_REG);
+       val |= MPI_L2PREMAP_ENABLED_MASK | MPI_L2PREMAP_IS_CARDBUS_MASK;
+       bcm_mpi_writel(val, MPI_L2PMEMREMAP2_REG);
+#else
        /* disable second access windows */
        bcm_mpi_writel(0, MPI_L2PMEMREMAP2_REG);
+#endif
 
        /* setup local bus  to PCI access (IO memory),  we have only 1
         * IO window  for both PCI  and cardbus, but it  cannot handle
@@ -169,6 +209,10 @@ static int __init bcm63xx_pci_init(void)
 
        register_pci_controller(&bcm63xx_controller);
 
+#ifdef CONFIG_CARDBUS
+       register_pci_controller(&bcm63xx_cb_controller);
+#endif
+
        /* mark memory space used for IO mapping as reserved */
        request_mem_region(BCM_PCI_IO_BASE_PA, BCM_PCI_IO_SIZE,
                           "bcm63xx PCI IO space");