static void ixdp2x00_irq_handler(unsigned int irq, struct irq_desc *desc)
{
volatile u32 ex_interrupt = 0;
static struct slowport_cfg old_cfg;
int i;
desc->irq_data.chip->irq_mask(&desc->irq_data);
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_acquire_slowport(&slowport_cpld_cfg, &old_cfg);
#endif
ex_interrupt = *board_irq_stat & 0xff;
if (machine_is_ixdp2400())
ixp2000_release_slowport(&old_cfg);
if(!ex_interrupt) {
printk(KERN_ERR "Spurious IXDP2x00 CPLD interrupt!\n");
return;
}
for(i = 0; i < board_irq_count; i++) {
if(ex_interrupt & (1 << i)) {
int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
generic_handle_irq(cpld_irq);
}
}
desc->irq_data.chip->irq_unmask(&desc->irq_data);
}
int __init ixdp2400_pci_init(void)
{
if (machine_is_ixdp2400())
pci_common_init(&ixdp2400_pci);
return 0;
}
void __init ixp2000_pci_init(void *sysdata)
{
external_fault = ixp2000_pci_abort_handler;
DBG("PCI: set upper mem io bits\n");
*IXP2000_PCI_ADDR_EXT = 0x0;
if (npu_is_master()) {/* master NPU */
pci_scan_bus(0, &ixp2000_ops, sysdata);
} else { /* NPU is slave */
/*
* NOTE TO HW DESIGNERS:
*
* Do NOT make boards like this which have slave devices that scan
* the bus and own devices. It is completely against the PCI spec
* as it is _NOT_ a peer to peer bus.
*/
if(machine_is_ixdp2400())
pci_scan_bus(0, &ixp2000_ops, sysdata);
}
/* enable PCI INTB */
*(IXP2000_IRQ_ENABLE_SET) = (1<<15);
*IXP2000_PCI_XSCALE_INT_ENABLE |= (1<<27) | (1<<26);
DBG("ixp200_pci_init Done\n");
}
static int __init ixdp2400_i2c_init(void)
{
if(machine_is_ixdp2400()) {
int i = 0;
/*
* GPIO2 needs to be high for SDA to work on this board
*/
gpio_line_set(IXDP2400_GPIO_HIGH, 1);
gpio_line_config(IXDP2400_GPIO_HIGH, GPIO_OUT);
ixdp2400_gpio.sda_gpio = IXDP2400_GPIO_SCL;
ixdp2400_gpio.scl_gpio = IXDP2400_GPIO_SDA;
gpio_line_config(ixdp2400_gpio.sda_gpio, GPIO_OUT);
gpio_line_config(ixdp2400_gpio.scl_gpio, GPIO_OUT);
gpio_line_set(ixdp2400_gpio.scl_gpio, 0);
gpio_line_set(ixdp2400_gpio.sda_gpio, 0);
gpio_line_config(ixdp2400_gpio.scl_gpio, GPIO_IN);
for(i = 0; i < 10; i++);
gpio_line_config(ixdp2400_gpio.sda_gpio, GPIO_IN);
}
if (i2c_bit_add_bus(&ixdp2400_i2c_adapter)) {
printk("i2c-ixdp2400: I2C adapter registration failed\n");
return -EIO;
} else printk("i2c-ixdp2400: I2C bus initialized\n");
return 0;
}
static void ixdp2x00_irq_unmask(struct irq_data *d)
{
unsigned long dummy;
static struct slowport_cfg old_cfg;
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_acquire_slowport(&slowport_cpld_cfg, &old_cfg);
#endif
dummy = *board_irq_mask;
dummy &= ~IXP2000_BOARD_IRQ_MASK(d->irq);
ixp2000_reg_wrb(board_irq_mask, dummy);
if (machine_is_ixdp2400())
ixp2000_release_slowport(&old_cfg);
}
static void ixdp2x00_irq_mask(struct irq_data *d)
{
unsigned long dummy;
static struct slowport_cfg old_cfg;
/*
* This is ugly in common code but really don't know
* of a better way to handle it. :(
*/
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_acquire_slowport(&slowport_cpld_cfg, &old_cfg);
#endif
dummy = *board_irq_mask;
dummy |= IXP2000_BOARD_IRQ_MASK(d->irq);
ixp2000_reg_wrb(board_irq_mask, dummy);
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_release_slowport(&old_cfg);
#endif
}