/*
* Atheros AR71xx PCI host controller driver
*
- * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
#define PCI_IDSEL_BASE 0
#endif
-static unsigned ar71xx_pci_nr_irqs;
-static struct ar71xx_pci_irq *ar71xx_pci_irq_map __initdata;
static void __iomem *ar71xx_pcicfg_base;
-
static DEFINE_SPINLOCK(ar71xx_pci_lock);
+static int ar71xx_pci_fixup_enable;
static inline void ar71xx_pci_delay(void)
{
/* Byte lane enable bits */
static u8 ble_table[4][4] = {
- {0xf, 0xe, 0xd, 0xc},
- {0xc, 0x9, 0x3, 0x1},
- {0x0, 0x0, 0x0, 0x0},
- {0x0, 0x0, 0x0, 0x0},
+ {0x0, 0xf, 0xf, 0xf},
+ {0xe, 0xd, 0xb, 0x7},
+ {0xc, 0xf, 0x3, 0xf},
+ {0xf, 0xf, 0xf, 0xf},
};
static inline u32 ar71xx_pci_get_ble(int where, int size, int local)
{
u32 t;
- t = ble_table[size][where & 3];
+ t = ble_table[size & 3][where & 3];
+ BUG_ON(t == 0xf);
t <<= (local) ? 20 : 4;
return t;
}
return ret;
}
-static int __ar71xx_pci_be_handler(int is_fixup)
+int ar71xx_pci_be_handler(int is_fixup)
{
u32 pci_err;
u32 ahb_err;
ar71xx_pcicfg_wr(PCI_REG_CFG_CBE,
cmd | ar71xx_pci_get_ble(where, size, 0));
- return __ar71xx_pci_be_handler(1);
+ return ar71xx_pci_be_handler(1);
}
static int ar71xx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
{
u32 t;
+ if (!ar71xx_pci_fixup_enable)
+ return;
+
if (dev->bus->number != 0 || dev->devfn != 0)
return;
pci_write_config_word(dev, PCI_COMMAND, t);
}
-
DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ar71xx_pci_fixup);
-int __init pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
+int __init ar71xx_pcibios_map_irq(const struct pci_dev *dev, uint8_t slot,
+ uint8_t pin)
{
int irq = -1;
int i;
return irq;
}
-int pcibios_plat_dev_init(struct pci_dev *dev)
-{
- return 0;
-}
-
static struct pci_ops ar71xx_pci_ops = {
.read = ar71xx_pci_read_config,
.write = ar71xx_pci_write_config,
.io_resource = &ar71xx_pci_io_resource,
};
-static int __init __ar71xx_pci_bios_init(unsigned nr_irqs,
- struct ar71xx_pci_irq *map)
+int __init ar71xx_pcibios_init(void)
{
ar71xx_device_stop(RESET_MODULE_PCI_BUS | RESET_MODULE_PCI_CORE);
ar71xx_pci_delay();
ar71xx_pcicfg_base = ioremap_nocache(AR71XX_PCI_CFG_BASE,
AR71XX_PCI_CFG_SIZE);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN0, PCI_WIN0_OFFS);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN1, PCI_WIN1_OFFS);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN2, PCI_WIN2_OFFS);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN3, PCI_WIN3_OFFS);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN4, PCI_WIN4_OFFS);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN5, PCI_WIN5_OFFS);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN6, PCI_WIN6_OFFS);
- ar71xx_ddr_wr(DDR_REG_PCI_WIN7, PCI_WIN7_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN0, PCI_WIN0_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN1, PCI_WIN1_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN2, PCI_WIN2_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN3, PCI_WIN3_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN4, PCI_WIN4_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN5, PCI_WIN5_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN6, PCI_WIN6_OFFS);
+ ar71xx_ddr_wr(AR71XX_DDR_REG_PCI_WIN7, PCI_WIN7_OFFS);
ar71xx_pci_delay();
/* clear bus errors */
- (void)__ar71xx_pci_be_handler(1);
-
- ar71xx_pci_nr_irqs = nr_irqs;
- ar71xx_pci_irq_map = map;
- ar71xx_pci_be_handler = __ar71xx_pci_be_handler;
+ (void)ar71xx_pci_be_handler(1);
+ ar71xx_pci_fixup_enable = 1;
register_pci_controller(&ar71xx_pci_controller);
return 0;
}
-
-static int __init __ar71xx_pci_init(void)
-{
- ar71xx_pci_bios_init = __ar71xx_pci_bios_init;
- return 0;
-}
-pure_initcall(__ar71xx_pci_init);