static void ixdp2x00_irq_mask(unsigned int irq)
{
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(irq);
ixp2000_reg_wrb(board_irq_mask, dummy);
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_release_slowport(&old_cfg);
#endif
}
/*************************************************************************
* IXDP2x01 IRQ Handling
*************************************************************************/
static void ixdp2x01_irq_mask(struct irq_data *d)
{
ixp2000_reg_wrb(IXDP2X01_INT_MASK_SET_REG,
IXP2000_BOARD_IRQ_MASK(d->irq));
}
void __init ixp2000_init_irq(void)
{
int irq;
/*
* Mask all sources
*/
ixp2000_reg_write(IXP2000_IRQ_ENABLE_CLR, 0xffffffff);
ixp2000_reg_write(IXP2000_FIQ_ENABLE_CLR, 0xffffffff);
/* clear all GPIO edge/level detects */
ixp2000_reg_write(IXP2000_GPIO_REDR, 0);
ixp2000_reg_write(IXP2000_GPIO_FEDR, 0);
ixp2000_reg_write(IXP2000_GPIO_LSHR, 0);
ixp2000_reg_write(IXP2000_GPIO_LSLR, 0);
ixp2000_reg_write(IXP2000_GPIO_INCR, -1);
/* clear PCI interrupt sources */
ixp2000_reg_wrb(IXP2000_PCI_XSCALE_INT_ENABLE, 0);
/*
* Certain bits in the IRQ status register of the
* IXP2000 are reserved. Instead of trying to map
* things non 1:1 from bit position to IRQ number,
* we mark the reserved IRQs as invalid. This makes
* our mask/unmask code much simpler.
*/
for (irq = IRQ_IXP2000_SOFT_INT; irq <= IRQ_IXP2000_THDB3; irq++) {
if ((1 << irq) & IXP2000_VALID_IRQ_MASK) {
set_irq_chip(irq, &ixp2000_irq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
} else set_irq_flags(irq, 0);
}
for (irq = IRQ_IXP2000_DRAM0_MIN_ERR; irq <= IRQ_IXP2000_SP_INT; irq++) {
if((1 << (irq - IRQ_IXP2000_DRAM0_MIN_ERR)) &
IXP2000_VALID_ERR_IRQ_MASK) {
set_irq_chip(irq, &ixp2000_err_irq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
else
set_irq_flags(irq, 0);
}
set_irq_chained_handler(IRQ_IXP2000_ERRSUM, ixp2000_err_irq_handler);
for (irq = IRQ_IXP2000_GPIO0; irq <= IRQ_IXP2000_GPIO7; irq++) {
set_irq_chip(irq, &ixp2000_GPIO_irq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
set_irq_chained_handler(IRQ_IXP2000_GPIO, ixp2000_GPIO_irq_handler);
/*
* Enable PCI irqs. The actual PCI[AB] decoding is done in
* entry-macro.S, so we don't need a chained handler for the
* PCI interrupt source.
*/
ixp2000_reg_write(IXP2000_IRQ_ENABLE_SET, (1 << IRQ_IXP2000_PCI));
for (irq = IRQ_IXP2000_PCIA; irq <= IRQ_IXP2000_PCIB; irq++) {
set_irq_chip(irq, &ixp2000_pci_irq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
}
static void ixp2000_irq_mask(unsigned int irq)
{
ixp2000_reg_wrb(IXP2000_IRQ_ENABLE_CLR, (1 << irq));
}
static void ixp2000_GPIO_irq_mask(unsigned int irq)
{
ixp2000_reg_wrb(IXP2000_GPIO_INCR, (1 << (irq - IRQ_IXP2000_GPIO0)));
}
static void ixdp2x01_irq_mask(unsigned int irq)
{
ixp2000_reg_wrb(IXDP2X01_INT_MASK_SET_REG,
IXP2000_BOARD_IRQ_MASK(irq));
}