diff options
Diffstat (limited to 'arch/arm/mach-orion5x/pci.c')
| -rw-r--r-- | arch/arm/mach-orion5x/pci.c | 86 |
1 files changed, 55 insertions, 31 deletions
diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c index 9d5d39f..256a4f6 100644 --- a/arch/arm/mach-orion5x/pci.c +++ b/arch/arm/mach-orion5x/pci.c @@ -152,6 +152,8 @@ static int __init pcie_setup(struct pci_sys_data *sys) if (dev == MV88F5181_DEV_ID || dev == MV88F5182_DEV_ID) { printk(KERN_NOTICE "Applying Orion-1/Orion-NAS PCIe config " "read transaction workaround\n"); + orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE, + ORION5X_PCIE_WA_SIZE); pcie_ops.read = pcie_rd_conf_wa; } @@ -240,13 +242,13 @@ static int __init pcie_setup(struct pci_sys_data *sys) * PCI Address Decode Windows registers */ #define PCI_BAR_SIZE_DDR_CS(n) (((n) == 0) ? ORION5X_PCI_REG(0xc08) : \ - ((n) == 1) ? ORION5X_PCI_REG(0xd08) : \ - ((n) == 2) ? ORION5X_PCI_REG(0xc0c) : \ - ((n) == 3) ? ORION5X_PCI_REG(0xd0c) : 0) -#define PCI_BAR_REMAP_DDR_CS(n) (((n) ==0) ? ORION5X_PCI_REG(0xc48) : \ - ((n) == 1) ? ORION5X_PCI_REG(0xd48) : \ - ((n) == 2) ? ORION5X_PCI_REG(0xc4c) : \ - ((n) == 3) ? ORION5X_PCI_REG(0xd4c) : 0) + ((n) == 1) ? ORION5X_PCI_REG(0xd08) : \ + ((n) == 2) ? ORION5X_PCI_REG(0xc0c) : \ + ((n) == 3) ? ORION5X_PCI_REG(0xd0c) : 0) +#define PCI_BAR_REMAP_DDR_CS(n) (((n) == 0) ? ORION5X_PCI_REG(0xc48) : \ + ((n) == 1) ? ORION5X_PCI_REG(0xd48) : \ + ((n) == 2) ? ORION5X_PCI_REG(0xc4c) : \ + ((n) == 3) ? ORION5X_PCI_REG(0xd4c) : 0) #define PCI_BAR_ENABLE ORION5X_PCI_REG(0xc3c) #define PCI_ADDR_DECODE_CTRL ORION5X_PCI_REG(0xd3c) @@ -264,9 +266,11 @@ static int __init pcie_setup(struct pci_sys_data *sys) */ static DEFINE_SPINLOCK(orion5x_pci_lock); +static int orion5x_pci_cardbus_mode; + static int orion5x_pci_local_bus_nr(void) { - u32 conf = orion5x_read(PCI_P2P_CONF); + u32 conf = readl(PCI_P2P_CONF); return((conf & PCI_P2P_BUS_MASK) >> PCI_P2P_BUS_OFFS); } @@ -276,11 +280,11 @@ static int orion5x_pci_hw_rd_conf(int bus, int dev, u32 func, unsigned long flags; spin_lock_irqsave(&orion5x_pci_lock, flags); - orion5x_write(PCI_CONF_ADDR, PCI_CONF_BUS(bus) | - PCI_CONF_DEV(dev) | PCI_CONF_REG(where) | - PCI_CONF_FUNC(func) | PCI_CONF_ADDR_EN); + writel(PCI_CONF_BUS(bus) | + PCI_CONF_DEV(dev) | PCI_CONF_REG(where) | + PCI_CONF_FUNC(func) | PCI_CONF_ADDR_EN, PCI_CONF_ADDR); - *val = orion5x_read(PCI_CONF_DATA); + *val = readl(PCI_CONF_DATA); if (size == 1) *val = (*val >> (8*(where & 0x3))) & 0xff; @@ -300,9 +304,9 @@ static int orion5x_pci_hw_wr_conf(int bus, int dev, u32 func, spin_lock_irqsave(&orion5x_pci_lock, flags); - orion5x_write(PCI_CONF_ADDR, PCI_CONF_BUS(bus) | - PCI_CONF_DEV(dev) | PCI_CONF_REG(where) | - PCI_CONF_FUNC(func) | PCI_CONF_ADDR_EN); + writel(PCI_CONF_BUS(bus) | + PCI_CONF_DEV(dev) | PCI_CONF_REG(where) | + PCI_CONF_FUNC(func) | PCI_CONF_ADDR_EN, PCI_CONF_ADDR); if (size == 4) { __raw_writel(val, PCI_CONF_DATA); @@ -319,14 +323,30 @@ static int orion5x_pci_hw_wr_conf(int bus, int dev, u32 func, return ret; } +static int orion5x_pci_valid_config(int bus, u32 devfn) +{ + if (bus == orion5x_pci_local_bus_nr()) { + /* + * Don't go out for local device + */ + if (PCI_SLOT(devfn) == 0 && PCI_FUNC(devfn) != 0) + return 0; + + /* + * When the PCI signals are directly connected to a + * Cardbus slot, ignore all but device IDs 0 and 1. + */ + if (orion5x_pci_cardbus_mode && PCI_SLOT(devfn) > 1) + return 0; + } + + return 1; +} + static int orion5x_pci_rd_conf(struct pci_bus *bus, u32 devfn, int where, int size, u32 *val) { - /* - * Don't go out for local device - */ - if (bus->number == orion5x_pci_local_bus_nr() && - PCI_SLOT(devfn) == 0 && PCI_FUNC(devfn) != 0) { + if (!orion5x_pci_valid_config(bus->number, devfn)) { *val = 0xffffffff; return PCIBIOS_DEVICE_NOT_FOUND; } @@ -338,8 +358,7 @@ static int orion5x_pci_rd_conf(struct pci_bus *bus, u32 devfn, static int orion5x_pci_wr_conf(struct pci_bus *bus, u32 devfn, int where, int size, u32 val) { - if (bus->number == orion5x_pci_local_bus_nr() && - PCI_SLOT(devfn) == 0 && PCI_FUNC(devfn) != 0) + if (!orion5x_pci_valid_config(bus->number, devfn)) return PCIBIOS_DEVICE_NOT_FOUND; return orion5x_pci_hw_wr_conf(bus->number, PCI_SLOT(devfn), @@ -353,9 +372,9 @@ static struct pci_ops pci_ops = { static void __init orion5x_pci_set_bus_nr(int nr) { - u32 p2p = orion5x_read(PCI_P2P_CONF); + u32 p2p = readl(PCI_P2P_CONF); - if (orion5x_read(PCI_MODE) & PCI_MODE_PCIX) { + if (readl(PCI_MODE) & PCI_MODE_PCIX) { /* * PCI-X mode */ @@ -372,7 +391,7 @@ static void __init orion5x_pci_set_bus_nr(int nr) */ p2p &= ~PCI_P2P_BUS_MASK; p2p |= (nr << PCI_P2P_BUS_OFFS); - orion5x_write(PCI_P2P_CONF, p2p); + writel(p2p, PCI_P2P_CONF); } } @@ -399,7 +418,7 @@ static void __init orion5x_setup_pci_wins(struct mbus_dram_target_info *dram) * First, disable windows. */ win_enable = 0xffffffff; - orion5x_write(PCI_BAR_ENABLE, win_enable); + writel(win_enable, PCI_BAR_ENABLE); /* * Setup windows for DDR banks. @@ -425,10 +444,10 @@ static void __init orion5x_setup_pci_wins(struct mbus_dram_target_info *dram) */ reg = PCI_CONF_REG_BAR_HI_CS(cs->cs_index); orion5x_pci_hw_wr_conf(bus, 0, func, reg, 4, 0); - orion5x_write(PCI_BAR_SIZE_DDR_CS(cs->cs_index), - (cs->size - 1) & 0xfffff000); - orion5x_write(PCI_BAR_REMAP_DDR_CS(cs->cs_index), - cs->base & 0xfffff000); + writel((cs->size - 1) & 0xfffff000, + PCI_BAR_SIZE_DDR_CS(cs->cs_index)); + writel(cs->base & 0xfffff000, + PCI_BAR_REMAP_DDR_CS(cs->cs_index)); /* * Enable decode window for this chip select. @@ -439,7 +458,7 @@ static void __init orion5x_setup_pci_wins(struct mbus_dram_target_info *dram) /* * Re-enable decode windows. */ - orion5x_write(PCI_BAR_ENABLE, win_enable); + writel(win_enable, PCI_BAR_ENABLE); /* * Disable automatic update of address remaping when writing to BARs. @@ -522,6 +541,11 @@ static void __devinit rc_pci_fixup(struct pci_dev *dev) } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_ANY_ID, rc_pci_fixup); +void __init orion5x_pci_set_cardbus_mode(void) +{ + orion5x_pci_cardbus_mode = 1; +} + int __init orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys) { int ret = 0; |