diff options
Diffstat (limited to 'arch/mips/alchemy/mtx-1/platform.c')
| -rw-r--r-- | arch/mips/alchemy/mtx-1/platform.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/mips/alchemy/mtx-1/platform.c b/arch/mips/alchemy/mtx-1/platform.c index 55628e3..cc47b68 100644 --- a/arch/mips/alchemy/mtx-1/platform.c +++ b/arch/mips/alchemy/mtx-1/platform.c @@ -135,7 +135,69 @@ static struct platform_device mtx1_mtd = { .resource = &mtx1_mtd_resource, }; +static struct resource alchemy_pci_host_res[] = { + [0] = { + .start = AU1500_PCI_PHYS_ADDR, + .end = AU1500_PCI_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, +}; + +static int mtx1_pci_idsel(unsigned int devsel, int assert) +{ + /* This function is only necessary to support a proprietary Cardbus + * adapter on the mtx-1 "singleboard" variant. It triggers a custom + * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals. + */ + if (assert && devsel != 0) + /* Suppress signal to Cardbus */ + alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */ + else + alchemy_gpio_set_value(1, 1); /* set EXT_IO3 ON */ + + udelay(1); + return 1; +} + +static const char mtx1_irqtab[][5] = { + [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */ + [1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */ + [2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */ + [3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */ + [4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */ + [5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */ + [6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */ + [7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */ +}; + +static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) +{ + return mtx1_irqtab[slot][pin]; +} + +static struct alchemy_pci_platdata mtx1_pci_pd = { + .board_map_irq = mtx1_map_pci_irq, + .board_pci_idsel = mtx1_pci_idsel, + .pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H | + PCI_CONFIG_CH | +#if defined(__MIPSEB__) + PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM, +#else + 0, +#endif +}; + +static struct platform_device mtx1_pci_host = { + .dev.platform_data = &mtx1_pci_pd, + .name = "alchemy-pci", + .id = 0, + .num_resources = ARRAY_SIZE(alchemy_pci_host_res), + .resource = alchemy_pci_host_res, +}; + + static struct __initdata platform_device * mtx1_devs[] = { + &mtx1_pci_host, &mtx1_gpio_leds, &mtx1_wdt, &mtx1_button, |