static void intc_mask_ack(struct irq_data *data)
{
unsigned int irq = data->irq;
struct intc_desc_int *d = get_intc_desc(irq);
unsigned long handle = intc_get_ack_handle(irq);
unsigned long addr;
intc_disable(data);
/* read register and write zero only to the associated bit */
if (handle) {
unsigned int value;
addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
value = intc_set_field_from_handle(0, 1, handle);
switch (_INTC_FN(handle)) {
case REG_FN_MODIFY_BASE + 0: /* 8bit */
__raw_readb(addr);
__raw_writeb(0xff ^ value, addr);
break;
case REG_FN_MODIFY_BASE + 1: /* 16bit */
__raw_readw(addr);
__raw_writew(0xffff ^ value, addr);
break;
case REG_FN_MODIFY_BASE + 3: /* 32bit */
__raw_readl(addr);
__raw_writel(0xffffffff ^ value, addr);
break;
default:
BUG();
break;
}
}
}
static unsigned long write_8(unsigned long addr, unsigned long h,
unsigned long data)
{
__raw_writeb(intc_set_field_from_handle(0, data, h), addr);
(void)__raw_readb(addr); /* Defeat write posting */
return 0;
}
static unsigned long write_32(unsigned long addr, unsigned long h,
unsigned long data)
{
__raw_writel(intc_set_field_from_handle(0, data, h), addr);
(void)__raw_readl(addr);
return 0;
}
static unsigned long modify_32(unsigned long addr, unsigned long h,
unsigned long data)
{
unsigned long flags;
unsigned int value;
local_irq_save(flags);
value = intc_set_field_from_handle(__raw_readl(addr), data, h);
__raw_writel(value, addr);
(void)__raw_readl(addr); /* Defeat write posting */
local_irq_restore(flags);
return 0;
}
static unsigned long modify_16(unsigned long addr, unsigned long h,
unsigned long data)
{
unsigned long flags;
unsigned int value;
local_irq_save(flags);
value = intc_set_field_from_handle(__raw_readw(addr), data, h);
__raw_writew(value, addr);
(void)__raw_readw(addr);
local_irq_restore(flags);
return 0;
}
