/*
- * arch/ppc/syslib/mpc52xx_pic.c
- *
* Programmable Interrupt Controller functions for the Freescale MPC52xx
* embedded CPU.
*
#include <asm/mpc52xx.h>
-static struct mpc52xx_intr *intr;
-static struct mpc52xx_sdma *sdma;
+static struct mpc52xx_intr __iomem *intr;
+static struct mpc52xx_sdma __iomem *sdma;
static void
mpc52xx_ic_disable(unsigned int irq)
/*
* Only some irqs are reset here, others in interrupting hardware.
*/
-
+
switch (irq) {
case MPC52xx_IRQ0:
val = in_be32(&intr->ctrl);
}
static struct hw_interrupt_type mpc52xx_ic = {
- "MPC52xx",
- NULL, /* startup(irq) */
- NULL, /* shutdown(irq) */
- mpc52xx_ic_enable, /* enable(irq) */
- mpc52xx_ic_disable, /* disable(irq) */
- mpc52xx_ic_disable_and_ack, /* disable_and_ack(irq) */
- mpc52xx_ic_end, /* end(irq) */
- 0 /* set_affinity(irq, cpumask) SMP. */
+ .typename = " MPC52xx ",
+ .enable = mpc52xx_ic_enable,
+ .disable = mpc52xx_ic_disable,
+ .ack = mpc52xx_ic_disable_and_ack,
+ .end = mpc52xx_ic_end,
};
void __init
mpc52xx_init_irq(void)
{
int i;
+ u32 intr_ctrl;
/* Remap the necessary zones */
- intr = (struct mpc52xx_intr *)
- ioremap(MPC52xx_INTR, sizeof(struct mpc52xx_intr));
- sdma = (struct mpc52xx_sdma *)
- ioremap(MPC52xx_SDMA, sizeof(struct mpc52xx_sdma));
-
+ intr = ioremap(MPC52xx_PA(MPC52xx_INTR_OFFSET), MPC52xx_INTR_SIZE);
+ sdma = ioremap(MPC52xx_PA(MPC52xx_SDMA_OFFSET), MPC52xx_SDMA_SIZE);
+
if ((intr==NULL) || (sdma==NULL))
panic("Can't ioremap PIC/SDMA register for init_irq !");
out_be32(&sdma->IntMask, 0xffffffff); /* 1 means disabled */
out_be32(&intr->per_mask, 0x7ffffc00); /* 1 means disabled */
out_be32(&intr->main_mask, 0x00010fff); /* 1 means disabled */
- out_be32(&intr->ctrl,
- 0x0f000000 | /* clear IRQ 0-3 */
- 0x00c00000 | /* IRQ0: level-sensitive, active low */
+ intr_ctrl = in_be32(&intr->ctrl);
+ intr_ctrl &= 0x00ff0000; /* Keeps IRQ[0-3] config */
+ intr_ctrl |= 0x0f000000 | /* clear IRQ 0-3 */
0x00001000 | /* MEE master external enable */
0x00000000 | /* 0 means disable IRQ 0-3 */
- 0x00000001); /* CEb route critical normally */
+ 0x00000001; /* CEb route critical normally */
+ out_be32(&intr->ctrl, intr_ctrl);
/* Zero a bunch of the priority settings. */
out_be32(&intr->per_pri1, 0);
irq_desc[i].handler = &mpc52xx_ic;
irq_desc[i].status = IRQ_LEVEL;
}
+
+ #define IRQn_MODE(intr_ctrl,irq) (((intr_ctrl) >> (22-(i<<1))) & 0x03)
+ for (i=0 ; i<4 ; i++) {
+ int mode;
+ mode = IRQn_MODE(intr_ctrl,i);
+ if ((mode == 0x1) || (mode == 0x2))
+ irq_desc[i?MPC52xx_IRQ1+i-1:MPC52xx_IRQ0].status = 0;
+ }
}
int