arch/ppc/syslib/gt64260_pic.c - fp2-dev/kernel/msm - Gitiles

 /*
  * arch/ppc/syslib/gt64260_pic.c
  *
  * Interrupt controller support for Galileo's GT64260.
  *
  * Author: Chris Zankel <source@mvista.com>
  * Modified by: Mark A. Greer <mgreer@mvista.com>
  *
  * Based on sources from Rabeeh Khoury / Galileo Technology
  *
  * 2001 (c) MontaVista, Software, Inc.  This file is licensed under
  * the terms of the GNU General Public License version 2.  This program
  * is licensed "as is" without any warranty of any kind, whether express
  * or implied.
  */

 /*
  * This file contains the specific functions to support the GT64260
  * interrupt controller.
  *
  * The GT64260 has two main interrupt registers (high and low) that
  * summarizes the interrupts generated by the units of the GT64260.
  * Each bit is assigned to an interrupt number, where the low register
  * are assigned from IRQ0 to IRQ31 and the high cause register
  * from IRQ32 to IRQ63
  * The GPP (General Purpose Port) interrupts are assigned from IRQ64 (GPP0)
  * to IRQ95 (GPP31).
  * get_irq() returns the lowest interrupt number that is currently asserted.
  *
  * Note:
  *  - This driver does not initialize the GPP when used as an interrupt
  *    input.
  */

 #include <linux/stddef.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/signal.h>
 #include <linux/stddef.h>
 #include <linux/delay.h>
 #include <linux/irq.h>

 #include <asm/io.h>
 #include <asm/system.h>
 #include <asm/irq.h>
 #include <asm/mv64x60.h>
 #include <asm/machdep.h>

 #define CPU_INTR_STR	"gt64260 cpu interface error"
 #define PCI0_INTR_STR	"gt64260 pci 0 error"
 #define PCI1_INTR_STR	"gt64260 pci 1 error"

 /* ========================== forward declaration ========================== */

 static void gt64260_unmask_irq(unsigned int);
 static void gt64260_mask_irq(unsigned int);

 /* ========================== local declarations =========================== */

 struct hw_interrupt_type gt64260_pic = {
 	.typename = " gt64260_pic ",
 	.enable   = gt64260_unmask_irq,
 	.disable  = gt64260_mask_irq,
 	.ack      = gt64260_mask_irq,
 	.end      = gt64260_unmask_irq,
 };

 u32 gt64260_irq_base = 0;	/* GT64260 handles the next 96 IRQs from here */

 static struct mv64x60_handle bh;

 /* gt64260_init_irq()
  *
  *  This function initializes the interrupt controller. It assigns
  *  all interrupts from IRQ0 to IRQ95 to the gt64260 interrupt controller.
  *
  * Note:
  *  We register all GPP inputs as interrupt source, but disable them.
  */
 void __init
 gt64260_init_irq(void)
 {
 	int i;

 	if (ppc_md.progress)
 		ppc_md.progress("gt64260_init_irq: enter", 0x0);

 	bh.v_base = mv64x60_get_bridge_vbase();

 	ppc_cached_irq_mask[0] = 0;
 	ppc_cached_irq_mask[1] = 0x0f000000;	/* Enable GPP intrs */
 	ppc_cached_irq_mask[2] = 0;

 	/* disable all interrupts and clear current interrupts */
 	mv64x60_write(&bh, MV64x60_GPP_INTR_MASK, ppc_cached_irq_mask[2]);
 	mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, 0);
 	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_LO, ppc_cached_irq_mask[0]);
 	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_HI, ppc_cached_irq_mask[1]);

 	/* use the gt64260 for all (possible) interrupt sources */
 	for (i = gt64260_irq_base; i < (gt64260_irq_base + 96); i++)
 		irq_desc[i].handler = &gt64260_pic;

 	if (ppc_md.progress)
 		ppc_md.progress("gt64260_init_irq: exit", 0x0);
 }

 /*
  * gt64260_get_irq()
  *
  *  This function returns the lowest interrupt number of all interrupts that
  *  are currently asserted.
  *
  * Input Variable(s):
  *  struct pt_regs*	not used
  *
  * Output Variable(s):
  *  None.
  *
  * Returns:
  *  int	<interrupt number> or -2 (bogus interrupt)
  */
 int
 gt64260_get_irq(struct pt_regs *regs)
 {
 	int irq;
 	int irq_gpp;

 	irq = mv64x60_read(&bh, GT64260_IC_MAIN_CAUSE_LO);
 	irq = __ilog2((irq & 0x3dfffffe) & ppc_cached_irq_mask[0]);

 	if (irq == -1) {
 		irq = mv64x60_read(&bh, GT64260_IC_MAIN_CAUSE_HI);
 		irq = __ilog2((irq & 0x0f000db7) & ppc_cached_irq_mask[1]);

 		if (irq == -1)
 			irq = -2; /* bogus interrupt, should never happen */
 		else {
 			if (irq >= 24) {
 				irq_gpp = mv64x60_read(&bh,
 					MV64x60_GPP_INTR_CAUSE);
 				irq_gpp = __ilog2(irq_gpp &
 					ppc_cached_irq_mask[2]);

 				if (irq_gpp == -1)
 					irq = -2;
 				else {
 					irq = irq_gpp + 64;
 					mv64x60_write(&bh,
 						MV64x60_GPP_INTR_CAUSE,
 						~(1 << (irq - 64)));
 				}
 			} else
 				irq += 32;
 		}
 	}

 	(void)mv64x60_read(&bh, MV64x60_GPP_INTR_CAUSE);

 	if (irq < 0)
 		return (irq);
 	else
 		return (gt64260_irq_base + irq);
 }

 /* gt64260_unmask_irq()
  *
  *  This function enables an interrupt.
  *
  * Input Variable(s):
  *  unsigned int	interrupt number (IRQ0...IRQ95).
  *
  * Output Variable(s):
  *  None.
  *
  * Returns:
  *  void
  */
 static void
 gt64260_unmask_irq(unsigned int irq)
 {
 	irq -= gt64260_irq_base;

 	if (irq > 31)
 		if (irq > 63) /* unmask GPP irq */
 			mv64x60_write(&bh, MV64x60_GPP_INTR_MASK,
 				ppc_cached_irq_mask[2] |= (1 << (irq - 64)));
 		else /* mask high interrupt register */
 			mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_HI,
 				ppc_cached_irq_mask[1] |= (1 << (irq - 32)));
 	else /* mask low interrupt register */
 		mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_LO,
 			ppc_cached_irq_mask[0] |= (1 << irq));

 	(void)mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
 	return;
 }

 /* gt64260_mask_irq()
  *
  *  This function disables the requested interrupt.
  *
  * Input Variable(s):
  *  unsigned int	interrupt number (IRQ0...IRQ95).
  *
  * Output Variable(s):
  *  None.
  *
  * Returns:
  *  void
  */
 static void
 gt64260_mask_irq(unsigned int irq)
 {
 	irq -= gt64260_irq_base;

 	if (irq > 31)
 		if (irq > 63) /* mask GPP irq */
 			mv64x60_write(&bh, MV64x60_GPP_INTR_MASK,
 				ppc_cached_irq_mask[2] &= ~(1 << (irq - 64)));
 		else /* mask high interrupt register */
 			mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_HI,
 				ppc_cached_irq_mask[1] &= ~(1 << (irq - 32)));
 	else /* mask low interrupt register */
 		mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_LO,
 			ppc_cached_irq_mask[0] &= ~(1 << irq));

 	(void)mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
 	return;
 }

 static irqreturn_t
 gt64260_cpu_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
 {
 	printk(KERN_ERR "gt64260_cpu_error_int_handler: %s 0x%08x\n",
 		"Error on CPU interface - Cause regiser",
 		mv64x60_read(&bh, MV64x60_CPU_ERR_CAUSE));
 	printk(KERN_ERR "\tCPU error register dump:\n");
 	printk(KERN_ERR "\tAddress low  0x%08x\n",
 	       mv64x60_read(&bh, MV64x60_CPU_ERR_ADDR_LO));
 	printk(KERN_ERR "\tAddress high 0x%08x\n",
 	       mv64x60_read(&bh, MV64x60_CPU_ERR_ADDR_HI));
 	printk(KERN_ERR "\tData low     0x%08x\n",
 	       mv64x60_read(&bh, MV64x60_CPU_ERR_DATA_LO));
 	printk(KERN_ERR "\tData high    0x%08x\n",
 	       mv64x60_read(&bh, MV64x60_CPU_ERR_DATA_HI));
 	printk(KERN_ERR "\tParity       0x%08x\n",
 	       mv64x60_read(&bh, MV64x60_CPU_ERR_PARITY));
 	mv64x60_write(&bh, MV64x60_CPU_ERR_CAUSE, 0);
 	return IRQ_HANDLED;
 }

 static irqreturn_t
 gt64260_pci_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
 {
 	u32 val;
 	unsigned int pci_bus = (unsigned int)dev_id;

 	if (pci_bus == 0) {	/* Error on PCI 0 */
 		val = mv64x60_read(&bh, MV64x60_PCI0_ERR_CAUSE);
 		printk(KERN_ERR "%s: Error in PCI %d Interface\n",
 			"gt64260_pci_error_int_handler", pci_bus);
 		printk(KERN_ERR "\tPCI %d error register dump:\n", pci_bus);
 		printk(KERN_ERR "\tCause register 0x%08x\n", val);
 		printk(KERN_ERR "\tAddress Low    0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI0_ERR_ADDR_LO));
 		printk(KERN_ERR "\tAddress High   0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI0_ERR_ADDR_HI));
 		printk(KERN_ERR "\tAttribute      0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI0_ERR_DATA_LO));
 		printk(KERN_ERR "\tCommand        0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI0_ERR_CMD));
 		mv64x60_write(&bh, MV64x60_PCI0_ERR_CAUSE, ~val);
 	}
 	if (pci_bus == 1) {	/* Error on PCI 1 */
 		val = mv64x60_read(&bh, MV64x60_PCI1_ERR_CAUSE);
 		printk(KERN_ERR "%s: Error in PCI %d Interface\n",
 			"gt64260_pci_error_int_handler", pci_bus);
 		printk(KERN_ERR "\tPCI %d error register dump:\n", pci_bus);
 		printk(KERN_ERR "\tCause register 0x%08x\n", val);
 		printk(KERN_ERR "\tAddress Low    0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI1_ERR_ADDR_LO));
 		printk(KERN_ERR "\tAddress High   0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI1_ERR_ADDR_HI));
 		printk(KERN_ERR "\tAttribute      0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI1_ERR_DATA_LO));
 		printk(KERN_ERR "\tCommand        0x%08x\n",
 		       mv64x60_read(&bh, MV64x60_PCI1_ERR_CMD));
 		mv64x60_write(&bh, MV64x60_PCI1_ERR_CAUSE, ~val);
 	}
 	return IRQ_HANDLED;
 }

 static int __init
 gt64260_register_hdlrs(void)
 {
 	int rc;

 	/* Register CPU interface error interrupt handler */
 	if ((rc = request_irq(MV64x60_IRQ_CPU_ERR,
 		gt64260_cpu_error_int_handler, SA_INTERRUPT, CPU_INTR_STR, 0)))
 		printk(KERN_WARNING "Can't register cpu error handler: %d", rc);

 	mv64x60_write(&bh, MV64x60_CPU_ERR_MASK, 0);
 	mv64x60_write(&bh, MV64x60_CPU_ERR_MASK, 0x000000fe);

 	/* Register PCI 0 error interrupt handler */
 	if ((rc = request_irq(MV64360_IRQ_PCI0, gt64260_pci_error_int_handler,
 		    SA_INTERRUPT, PCI0_INTR_STR, (void *)0)))
 		printk(KERN_WARNING "Can't register pci 0 error handler: %d",
 			rc);

 	mv64x60_write(&bh, MV64x60_PCI0_ERR_MASK, 0);
 	mv64x60_write(&bh, MV64x60_PCI0_ERR_MASK, 0x003c0c24);

 	/* Register PCI 1 error interrupt handler */
 	if ((rc = request_irq(MV64360_IRQ_PCI1, gt64260_pci_error_int_handler,
 		    SA_INTERRUPT, PCI1_INTR_STR, (void *)1)))
 		printk(KERN_WARNING "Can't register pci 1 error handler: %d",
 			rc);

 	mv64x60_write(&bh, MV64x60_PCI1_ERR_MASK, 0);
 	mv64x60_write(&bh, MV64x60_PCI1_ERR_MASK, 0x003c0c24);

 	return 0;
 }

 arch_initcall(gt64260_register_hdlrs);
	/*
	* arch/ppc/syslib/gt64260_pic.c
	*
	* Interrupt controller support for Galileo's GT64260.
	*
	* Author: Chris Zankel <source@mvista.com>
	* Modified by: Mark A. Greer <mgreer@mvista.com>
	*
	* Based on sources from Rabeeh Khoury / Galileo Technology
	*
	* 2001 (c) MontaVista, Software, Inc. This file is licensed under
	* the terms of the GNU General Public License version 2. This program
	* is licensed "as is" without any warranty of any kind, whether express
	* or implied.
	*/

	/*
	* This file contains the specific functions to support the GT64260
	* interrupt controller.
	*
	* The GT64260 has two main interrupt registers (high and low) that
	* summarizes the interrupts generated by the units of the GT64260.
	* Each bit is assigned to an interrupt number, where the low register
	* are assigned from IRQ0 to IRQ31 and the high cause register
	* from IRQ32 to IRQ63
	* The GPP (General Purpose Port) interrupts are assigned from IRQ64 (GPP0)
	* to IRQ95 (GPP31).
	* get_irq() returns the lowest interrupt number that is currently asserted.
	*
	* Note:
	* - This driver does not initialize the GPP when used as an interrupt
	* input.
	*/

	#include <linux/stddef.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/sched.h>
	#include <linux/signal.h>
	#include <linux/stddef.h>
	#include <linux/delay.h>
	#include <linux/irq.h>

	#include <asm/io.h>
	#include <asm/system.h>
	#include <asm/irq.h>
	#include <asm/mv64x60.h>
	#include <asm/machdep.h>

	#define CPU_INTR_STR "gt64260 cpu interface error"
	#define PCI0_INTR_STR "gt64260 pci 0 error"
	#define PCI1_INTR_STR "gt64260 pci 1 error"

	/* ========================== forward declaration ========================== */

	static void gt64260_unmask_irq(unsigned int);
	static void gt64260_mask_irq(unsigned int);

	/* ========================== local declarations =========================== */

	struct hw_interrupt_type gt64260_pic = {
	.typename = " gt64260_pic ",
	.enable = gt64260_unmask_irq,
	.disable = gt64260_mask_irq,
	.ack = gt64260_mask_irq,
	.end = gt64260_unmask_irq,
	};

	u32 gt64260_irq_base = 0; /* GT64260 handles the next 96 IRQs from here */

	static struct mv64x60_handle bh;

	/* gt64260_init_irq()
	*
	* This function initializes the interrupt controller. It assigns
	* all interrupts from IRQ0 to IRQ95 to the gt64260 interrupt controller.
	*
	* Note:
	* We register all GPP inputs as interrupt source, but disable them.
	*/
	void __init
	gt64260_init_irq(void)
	{
	int i;

	if (ppc_md.progress)
	ppc_md.progress("gt64260_init_irq: enter", 0x0);

	bh.v_base = mv64x60_get_bridge_vbase();

	ppc_cached_irq_mask[0] = 0;
	ppc_cached_irq_mask[1] = 0x0f000000; /* Enable GPP intrs */
	ppc_cached_irq_mask[2] = 0;

	/* disable all interrupts and clear current interrupts */
	mv64x60_write(&bh, MV64x60_GPP_INTR_MASK, ppc_cached_irq_mask[2]);
	mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, 0);
	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_LO, ppc_cached_irq_mask[0]);
	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_HI, ppc_cached_irq_mask[1]);

	/* use the gt64260 for all (possible) interrupt sources */
	for (i = gt64260_irq_base; i < (gt64260_irq_base + 96); i++)
	irq_desc[i].handler = &gt64260_pic;

	if (ppc_md.progress)
	ppc_md.progress("gt64260_init_irq: exit", 0x0);
	}

	/*
	* gt64260_get_irq()
	*
	* This function returns the lowest interrupt number of all interrupts that
	* are currently asserted.
	*
	* Input Variable(s):
	* struct pt_regs* not used
	*
	* Output Variable(s):
	* None.
	*
	* Returns:
	* int <interrupt number> or -2 (bogus interrupt)
	*/
	int
	gt64260_get_irq(struct pt_regs *regs)
	{
	int irq;
	int irq_gpp;

	irq = mv64x60_read(&bh, GT64260_IC_MAIN_CAUSE_LO);
	irq = __ilog2((irq & 0x3dfffffe) & ppc_cached_irq_mask[0]);

	if (irq == -1) {
	irq = mv64x60_read(&bh, GT64260_IC_MAIN_CAUSE_HI);
	irq = __ilog2((irq & 0x0f000db7) & ppc_cached_irq_mask[1]);

	if (irq == -1)
	irq = -2; /* bogus interrupt, should never happen */
	else {
	if (irq >= 24) {
	irq_gpp = mv64x60_read(&bh,
	MV64x60_GPP_INTR_CAUSE);
	irq_gpp = __ilog2(irq_gpp &
	ppc_cached_irq_mask[2]);

	if (irq_gpp == -1)
	irq = -2;
	else {
	irq = irq_gpp + 64;
	mv64x60_write(&bh,
	MV64x60_GPP_INTR_CAUSE,
	~(1 << (irq - 64)));
	}
	} else
	irq += 32;
	}
	}

	(void)mv64x60_read(&bh, MV64x60_GPP_INTR_CAUSE);

	if (irq < 0)
	return (irq);
	else
	return (gt64260_irq_base + irq);
	}

	/* gt64260_unmask_irq()
	*
	* This function enables an interrupt.
	*
	* Input Variable(s):
	* unsigned int interrupt number (IRQ0...IRQ95).
	*
	* Output Variable(s):
	* None.
	*
	* Returns:
	* void
	*/
	static void
	gt64260_unmask_irq(unsigned int irq)
	{
	irq -= gt64260_irq_base;

	if (irq > 31)
	if (irq > 63) /* unmask GPP irq */
	mv64x60_write(&bh, MV64x60_GPP_INTR_MASK,
	ppc_cached_irq_mask[2] \|= (1 << (irq - 64)));
	else /* mask high interrupt register */
	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_HI,
	ppc_cached_irq_mask[1] \|= (1 << (irq - 32)));
	else /* mask low interrupt register */
	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_LO,
	ppc_cached_irq_mask[0] \|= (1 << irq));

	(void)mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
	return;
	}

	/* gt64260_mask_irq()
	*
	* This function disables the requested interrupt.
	*
	* Input Variable(s):
	* unsigned int interrupt number (IRQ0...IRQ95).
	*
	* Output Variable(s):
	* None.
	*
	* Returns:
	* void
	*/
	static void
	gt64260_mask_irq(unsigned int irq)
	{
	irq -= gt64260_irq_base;

	if (irq > 31)
	if (irq > 63) /* mask GPP irq */
	mv64x60_write(&bh, MV64x60_GPP_INTR_MASK,
	ppc_cached_irq_mask[2] &= ~(1 << (irq - 64)));
	else /* mask high interrupt register */
	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_HI,
	ppc_cached_irq_mask[1] &= ~(1 << (irq - 32)));
	else /* mask low interrupt register */
	mv64x60_write(&bh, GT64260_IC_CPU_INTR_MASK_LO,
	ppc_cached_irq_mask[0] &= ~(1 << irq));

	(void)mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
	return;
	}

	static irqreturn_t
	gt64260_cpu_error_int_handler(int irq, void dev_id, struct pt_regs regs)
	{
	printk(KERN_ERR "gt64260_cpu_error_int_handler: %s 0x%08x\n",
	"Error on CPU interface - Cause regiser",
	mv64x60_read(&bh, MV64x60_CPU_ERR_CAUSE));
	printk(KERN_ERR "\tCPU error register dump:\n");
	printk(KERN_ERR "\tAddress low 0x%08x\n",
	mv64x60_read(&bh, MV64x60_CPU_ERR_ADDR_LO));
	printk(KERN_ERR "\tAddress high 0x%08x\n",
	mv64x60_read(&bh, MV64x60_CPU_ERR_ADDR_HI));
	printk(KERN_ERR "\tData low 0x%08x\n",
	mv64x60_read(&bh, MV64x60_CPU_ERR_DATA_LO));
	printk(KERN_ERR "\tData high 0x%08x\n",
	mv64x60_read(&bh, MV64x60_CPU_ERR_DATA_HI));
	printk(KERN_ERR "\tParity 0x%08x\n",
	mv64x60_read(&bh, MV64x60_CPU_ERR_PARITY));
	mv64x60_write(&bh, MV64x60_CPU_ERR_CAUSE, 0);
	return IRQ_HANDLED;
	}

	static irqreturn_t
	gt64260_pci_error_int_handler(int irq, void dev_id, struct pt_regs regs)
	{
	u32 val;
	unsigned int pci_bus = (unsigned int)dev_id;

	if (pci_bus == 0) { /* Error on PCI 0 */
	val = mv64x60_read(&bh, MV64x60_PCI0_ERR_CAUSE);
	printk(KERN_ERR "%s: Error in PCI %d Interface\n",
	"gt64260_pci_error_int_handler", pci_bus);
	printk(KERN_ERR "\tPCI %d error register dump:\n", pci_bus);
	printk(KERN_ERR "\tCause register 0x%08x\n", val);
	printk(KERN_ERR "\tAddress Low 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI0_ERR_ADDR_LO));
	printk(KERN_ERR "\tAddress High 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI0_ERR_ADDR_HI));
	printk(KERN_ERR "\tAttribute 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI0_ERR_DATA_LO));
	printk(KERN_ERR "\tCommand 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI0_ERR_CMD));
	mv64x60_write(&bh, MV64x60_PCI0_ERR_CAUSE, ~val);
	}
	if (pci_bus == 1) { /* Error on PCI 1 */
	val = mv64x60_read(&bh, MV64x60_PCI1_ERR_CAUSE);
	printk(KERN_ERR "%s: Error in PCI %d Interface\n",
	"gt64260_pci_error_int_handler", pci_bus);
	printk(KERN_ERR "\tPCI %d error register dump:\n", pci_bus);
	printk(KERN_ERR "\tCause register 0x%08x\n", val);
	printk(KERN_ERR "\tAddress Low 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI1_ERR_ADDR_LO));
	printk(KERN_ERR "\tAddress High 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI1_ERR_ADDR_HI));
	printk(KERN_ERR "\tAttribute 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI1_ERR_DATA_LO));
	printk(KERN_ERR "\tCommand 0x%08x\n",
	mv64x60_read(&bh, MV64x60_PCI1_ERR_CMD));
	mv64x60_write(&bh, MV64x60_PCI1_ERR_CAUSE, ~val);
	}
	return IRQ_HANDLED;
	}

	static int __init
	gt64260_register_hdlrs(void)
	{
	int rc;

	/* Register CPU interface error interrupt handler */
	if ((rc = request_irq(MV64x60_IRQ_CPU_ERR,
	gt64260_cpu_error_int_handler, SA_INTERRUPT, CPU_INTR_STR, 0)))
	printk(KERN_WARNING "Can't register cpu error handler: %d", rc);

	mv64x60_write(&bh, MV64x60_CPU_ERR_MASK, 0);
	mv64x60_write(&bh, MV64x60_CPU_ERR_MASK, 0x000000fe);

	/* Register PCI 0 error interrupt handler */
	if ((rc = request_irq(MV64360_IRQ_PCI0, gt64260_pci_error_int_handler,
	SA_INTERRUPT, PCI0_INTR_STR, (void *)0)))
	printk(KERN_WARNING "Can't register pci 0 error handler: %d",
	rc);

	mv64x60_write(&bh, MV64x60_PCI0_ERR_MASK, 0);
	mv64x60_write(&bh, MV64x60_PCI0_ERR_MASK, 0x003c0c24);

	/* Register PCI 1 error interrupt handler */
	if ((rc = request_irq(MV64360_IRQ_PCI1, gt64260_pci_error_int_handler,
	SA_INTERRUPT, PCI1_INTR_STR, (void *)1)))
	printk(KERN_WARNING "Can't register pci 1 error handler: %d",
	rc);

	mv64x60_write(&bh, MV64x60_PCI1_ERR_MASK, 0);
	mv64x60_write(&bh, MV64x60_PCI1_ERR_MASK, 0x003c0c24);

	return 0;
	}

	arch_initcall(gt64260_register_hdlrs);