diff options
Diffstat (limited to 'target/linux/ramips/files/arch/mips/pci')
| -rw-r--r-- | target/linux/ramips/files/arch/mips/pci/pci-rt288x.c | 75 |
1 files changed, 45 insertions, 30 deletions
diff --git a/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c b/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c index 08f62871f..e3b05d061 100644 --- a/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c +++ b/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c @@ -4,25 +4,38 @@ #include <linux/init.h> #include <asm/mach-ralink/rt288x.h> +#include <asm/mach-ralink/rt288x_regs.h> #define RT2880_PCI_SLOT1_BASE 0x20000000 -#define RALINK_PCI_BASE 0xA0440000 -#define RT2880_PCI_PCICFG_ADDR ((unsigned long*)(RALINK_PCI_BASE + 0x0000)) -#define RT2880_PCI_ARBCTL ((unsigned long*)(RALINK_PCI_BASE + 0x0080)) -#define RT2880_PCI_BAR0SETUP_ADDR ((unsigned long*)(RALINK_PCI_BASE + 0x0010)) -#define RT2880_PCI_CONFIG_ADDR ((unsigned long*)(RALINK_PCI_BASE + 0x0020)) -#define RT2880_PCI_CONFIG_DATA ((unsigned long*)(RALINK_PCI_BASE + 0x0024)) -#define RT2880_PCI_MEMBASE ((unsigned long*)(RALINK_PCI_BASE + 0x0028)) -#define RT2880_PCI_IOBASE ((unsigned long*)(RALINK_PCI_BASE + 0x002C)) -#define RT2880_PCI_IMBASEBAR0_ADDR ((unsigned long*)(RALINK_PCI_BASE + 0x0018)) -#define RT2880_PCI_ID ((unsigned long*)(RALINK_PCI_BASE + 0x0030)) -#define RT2880_PCI_CLASS ((unsigned long*)(RALINK_PCI_BASE + 0x0034)) -#define RT2880_PCI_SUBID ((unsigned long*)(RALINK_PCI_BASE + 0x0038)) -#define RT2880_PCI_PCIMSK_ADDR ((unsigned long*)(RALINK_PCI_BASE + 0x000C)) + +#define RT2880_PCI_REG_PCICFG_ADDR 0x00 +#define RT2880_PCI_REG_PCIMSK_ADDR 0x0c +#define RT2880_PCI_REG_BAR0SETUP_ADDR 0x10 +#define RT2880_PCI_REG_IMBASEBAR0_ADDR 0x18 +#define RT2880_PCI_REG_CONFIG_ADDR 0x20 +#define RT2880_PCI_REG_CONFIG_DATA 0x24 +#define RT2880_PCI_REG_MEMBASE 0x28 +#define RT2880_PCI_REG_IOBASE 0x2c +#define RT2880_PCI_REG_ID 0x30 +#define RT2880_PCI_REG_CLASS 0x34 +#define RT2880_PCI_REG_SUBID 0x38 +#define RT2880_PCI_REG_ARBCTL 0x80 #define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 +void __iomem *rt2880_pci_base; + +static u32 rt2880_pci_reg_read(u32 reg) +{ + return readl(rt2880_pci_base + reg); +} + +static void rt2880_pci_reg_write(u32 val, u32 reg) +{ + writel(val, rt2880_pci_base + reg); +} + static int config_access(unsigned char access_type, struct pci_bus *bus, unsigned int devfn, unsigned char where, u32 *data) { @@ -33,11 +46,11 @@ static int config_access(unsigned char access_type, struct pci_bus *bus, address = (bus->number << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000; - writel(address, RT2880_PCI_CONFIG_ADDR); + rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR); if (access_type == PCI_ACCESS_WRITE) - writel(*data, RT2880_PCI_CONFIG_DATA); + rt2880_pci_reg_write(*data, RT2880_PCI_REG_CONFIG_DATA); else - *data = readl(RT2880_PCI_CONFIG_DATA); + *data = rt2880_pci_reg_read(RT2880_PCI_REG_CONFIG_DATA); return 0; } @@ -117,8 +130,8 @@ void inline read_config(unsigned long bus, unsigned long dev, address = (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) | 0x80000000; - writel(address, RT2880_PCI_CONFIG_ADDR); - *val = readl(RT2880_PCI_CONFIG_DATA); + rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR); + *val = rt2880_pci_reg_read(RT2880_PCI_REG_CONFIG_DATA); } void inline write_config(unsigned long bus, unsigned long dev, @@ -129,8 +142,8 @@ void inline write_config(unsigned long bus, unsigned long dev, address = (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) | 0x80000000; - writel(address, RT2880_PCI_CONFIG_ADDR); - writel(val, RT2880_PCI_CONFIG_DATA); + rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR); + rt2880_pci_reg_write(val, RT2880_PCI_REG_CONFIG_DATA); } int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) @@ -174,18 +187,20 @@ static int __init rt2880_pci_init(void) unsigned long val = 0; int i; - writel(0, RT2880_PCI_PCICFG_ADDR); + rt2880_pci_base = ioremap_nocache(RT2880_PCI_BASE, PAGE_SIZE); + + rt2880_pci_reg_write(0, RT2880_PCI_REG_PCICFG_ADDR); for(i = 0; i < 0xfffff; i++) {} - writel(0x79, RT2880_PCI_ARBCTL); - writel(0x07FF0001, RT2880_PCI_BAR0SETUP_ADDR); - writel(RT2880_PCI_SLOT1_BASE, RT2880_PCI_MEMBASE); - writel(0x00460000, RT2880_PCI_IOBASE); - writel(0x08000000, RT2880_PCI_IMBASEBAR0_ADDR); - writel(0x08021814, RT2880_PCI_ID); - writel(0x00800001, RT2880_PCI_CLASS); - writel(0x28801814, RT2880_PCI_SUBID); - writel(0x000c0000, RT2880_PCI_PCIMSK_ADDR); + rt2880_pci_reg_write(0x79, RT2880_PCI_REG_ARBCTL); + rt2880_pci_reg_write(0x07FF0001, RT2880_PCI_REG_BAR0SETUP_ADDR); + rt2880_pci_reg_write(RT2880_PCI_SLOT1_BASE, RT2880_PCI_REG_MEMBASE); + rt2880_pci_reg_write(0x00460000, RT2880_PCI_REG_IOBASE); + rt2880_pci_reg_write(0x08000000, RT2880_PCI_REG_IMBASEBAR0_ADDR); + rt2880_pci_reg_write(0x08021814, RT2880_PCI_REG_ID); + rt2880_pci_reg_write(0x00800001, RT2880_PCI_REG_CLASS); + rt2880_pci_reg_write(0x28801814, RT2880_PCI_REG_SUBID); + rt2880_pci_reg_write(0x000c0000, RT2880_PCI_REG_PCIMSK_ADDR); write_config(0, 0, 0, PCI_BASE_ADDRESS_0, 0x08000000); read_config(0, 0, 0, PCI_BASE_ADDRESS_0, &val); |