* These are the "new Hitachi style" interrupts, as present on the
* Hitachi 7751, the STM ST40 STB1, SH7760, and SH7780.
*/
-
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <asm/system.h>
#include <asm/io.h>
-#include <asm/machvec.h>
-
-struct intc2_data {
- unsigned char msk_offset;
- unsigned char msk_shift;
-
- int (*clear_irq) (int);
-};
-
-static struct intc2_data intc2_data[NR_INTC2_IRQS];
-
-static void enable_intc2_irq(unsigned int irq);
-static void disable_intc2_irq(unsigned int irq);
-
-/* shutdown is same as "disable" */
-#define shutdown_intc2_irq disable_intc2_irq
-
-static void mask_and_ack_intc2(unsigned int);
-static void end_intc2_irq(unsigned int irq);
-
-static unsigned int startup_intc2_irq(unsigned int irq)
-{
- enable_intc2_irq(irq);
- return 0; /* never anything pending */
-}
-
-static struct hw_interrupt_type intc2_irq_type = {
- .typename = "INTC2-IRQ",
- .startup = startup_intc2_irq,
- .shutdown = shutdown_intc2_irq,
- .enable = enable_intc2_irq,
- .disable = disable_intc2_irq,
- .ack = mask_and_ack_intc2,
- .end = end_intc2_irq
-};
static void disable_intc2_irq(unsigned int irq)
{
- int irq_offset = irq - INTC2_FIRST_IRQ;
- int msk_shift, msk_offset;
-
- /* Sanity check */
- if (unlikely(irq_offset < 0 || irq_offset >= NR_INTC2_IRQS))
- return;
-
- msk_shift = intc2_data[irq_offset].msk_shift;
- msk_offset = intc2_data[irq_offset].msk_offset;
-
- ctrl_outl(1 << msk_shift,
- INTC2_BASE + INTC2_INTMSK_OFFSET + msk_offset);
+ struct intc2_data *p = get_irq_chip_data(irq);
+ ctrl_outl(1 << p->msk_shift,
+ INTC2_BASE + INTC2_INTMSK_OFFSET + p->msk_offset);
}
static void enable_intc2_irq(unsigned int irq)
{
- int irq_offset = irq - INTC2_FIRST_IRQ;
- int msk_shift, msk_offset;
-
- /* Sanity check */
- if (unlikely(irq_offset < 0 || irq_offset >= NR_INTC2_IRQS))
- return;
-
- msk_shift = intc2_data[irq_offset].msk_shift;
- msk_offset = intc2_data[irq_offset].msk_offset;
-
- ctrl_outl(1 << msk_shift,
- INTC2_BASE + INTC2_INTMSKCLR_OFFSET + msk_offset);
-}
-
-static void mask_and_ack_intc2(unsigned int irq)
-{
- disable_intc2_irq(irq);
+ struct intc2_data *p = get_irq_chip_data(irq);
+ ctrl_outl(1 << p->msk_shift,
+ INTC2_BASE + INTC2_INTMSKCLR_OFFSET + p->msk_offset);
}
-static void end_intc2_irq(unsigned int irq)
-{
- if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- enable_intc2_irq(irq);
-
- if (unlikely(intc2_data[irq - INTC2_FIRST_IRQ].clear_irq))
- intc2_data[irq - INTC2_FIRST_IRQ].clear_irq(irq);
-}
+static struct irq_chip intc2_irq_chip = {
+ .typename = "intc2",
+ .mask = disable_intc2_irq,
+ .unmask = enable_intc2_irq,
+ .mask_ack = disable_intc2_irq,
+};
/*
* Setup an INTC2 style interrupt.
* | | | |
* make_intc2_irq(84, 0, 16, 0, 13);
*/
-void make_intc2_irq(unsigned int irq,
- unsigned int ipr_offset, unsigned int ipr_shift,
- unsigned int msk_offset, unsigned int msk_shift,
- unsigned int priority)
+void make_intc2_irq(struct intc2_data *p)
{
- int irq_offset = irq - INTC2_FIRST_IRQ;
unsigned int flags;
unsigned long ipr;
- if (unlikely(irq_offset < 0 || irq_offset >= NR_INTC2_IRQS))
- return;
-
- disable_irq_nosync(irq);
-
- /* Fill the data we need */
- intc2_data[irq_offset].msk_offset = msk_offset;
- intc2_data[irq_offset].msk_shift = msk_shift;
- intc2_data[irq_offset].clear_irq = NULL;
+ disable_irq_nosync(p->irq);
/* Set the priority level */
local_irq_save(flags);
- ipr = ctrl_inl(INTC2_BASE + INTC2_INTPRI_OFFSET + ipr_offset);
- ipr &= ~(0xf << ipr_shift);
- ipr |= priority << ipr_shift;
- ctrl_outl(ipr, INTC2_BASE + INTC2_INTPRI_OFFSET + ipr_offset);
+ ipr = ctrl_inl(INTC2_BASE + INTC2_INTPRI_OFFSET + p->ipr_offset);
+ ipr &= ~(0xf << p->ipr_shift);
+ ipr |= p->priority << p->ipr_shift;
+ ctrl_outl(ipr, INTC2_BASE + INTC2_INTPRI_OFFSET + p->ipr_offset);
local_irq_restore(flags);
- irq_desc[irq].chip = &intc2_irq_type;
+ set_irq_chip_and_handler(p->irq, &intc2_irq_chip, handle_level_irq);
+ set_irq_chip_data(p->irq, p);
- disable_intc2_irq(irq);
+ enable_intc2_irq(p->irq);
}
-static struct intc2_init {
- unsigned short irq;
- unsigned char ipr_offset, ipr_shift;
- unsigned char msk_offset, msk_shift;
- unsigned char priority;
-} intc2_init_data[] __initdata = {
+static struct intc2_data intc2_irq_table[] = {
#if defined(CONFIG_CPU_SUBTYPE_ST40)
{64, 0, 0, 0, 0, 13}, /* PCI serr */
{65, 0, 4, 0, 1, 13}, /* PCI err */
{
int i;
- for (i = 0; i < ARRAY_SIZE(intc2_init_data); i++) {
- struct intc2_init *p = intc2_init_data + i;
- make_intc2_irq(p->irq, p->ipr_offset, p->ipr_shift,
- p-> msk_offset, p->msk_shift, p->priority);
- }
-}
-
-/* Adds a termination callback to the interrupt */
-void intc2_add_clear_irq(int irq, int (*fn)(int))
-{
- if (unlikely(irq < INTC2_FIRST_IRQ))
- return;
-
- intc2_data[irq - INTC2_FIRST_IRQ].clear_irq = fn;
+ for (i = 0; i < ARRAY_SIZE(intc2_irq_table); i++)
+ make_intc2_irq(intc2_irq_table + i);
}
-
git.openpandora.org / pandora-kernel.git / blobdiff