error.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:4k
- /*
- * SN1 Platform specific error Support
- *
- * Copyright (C) 2001 Silicon Graphics, Inc.
- * Copyright (C) 2001 Alan Mayer (ajm@sgi.com)
- */
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/mm.h>
- #include <asm/ptrace.h>
- #include <linux/devfs_fs_kernel.h>
- #include <asm/smp.h>
- #include <asm/sn/sn_cpuid.h>
- #include <asm/sn/sn1/bedrock.h>
- #include <asm/sn/intr.h>
- #include <asm/sn/addrs.h>
- void
- snia_error_intr_handler(int irq, void *devid, struct pt_regs *pt_regs) {
- unsigned long long intpend_val;
- unsigned long long bit;
- switch (irq) {
- case SGI_UART_IRQ:
- // This isn't really an error interrupt. We're just
- // here because we have to do something with them.
- // This is probably wrong, and this code will be
- // removed.
- intpend_val = LOCAL_HUB_L(PI_INT_PEND0);
- if ( (bit = ~(1L<<GFX_INTR_A)) ==
- (intpend_val & ~(1L<<GFX_INTR_A)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- return;
- }
- if ( (bit = ~(1L<<GFX_INTR_B)) ==
- (intpend_val & ~(1L<<GFX_INTR_B)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- return;
- }
- if ( (bit = ~(1L<<PG_MIG_INTR)) ==
- (intpend_val & ~(1L<<PG_MIG_INTR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- return;
- }
- if ( (bit = ~(1L<<UART_INTR)) ==
- (intpend_val & ~(1L<<UART_INTR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- return;
- }
- if ( (bit = ~(1L<<CC_PEND_A)) ==
- (intpend_val & ~(1L<<CC_PEND_A)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- return;
- }
- if ( (bit = ~(1L<<CC_PEND_B)) ==
- (intpend_val & ~(1L<<CC_PEND_B)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- return;
- }
- printk("Received SGI_UART_IRQ (65), but no intpend0 bits were set???n");
- return;
- case SGI_HUB_ERROR_IRQ:
- // These are mostly error interrupts of various
- // sorts. We need to do more than panic here, but
- // what the heck, this is bring up.
- intpend_val = LOCAL_HUB_L(PI_INT_PEND1);
-
- if ( (bit = ~(1L<<XB_ERROR)) ==
- (intpend_val & ~(1L<<XB_ERROR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED XB_ERROR on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<LB_ERROR)) ==
- (intpend_val & ~(1L<<LB_ERROR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED LB_ERROR on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<NACK_INT_A)) ==
- (intpend_val & ~(1L<<NACK_INT_A)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED NACK_INT_A on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<NACK_INT_B)) ==
- (intpend_val & ~(1L<<NACK_INT_B)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED NACK_INT_B on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<CLK_ERR_INTR)) ==
- (intpend_val & ~(1L<<CLK_ERR_INTR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED CLK_ERR_INTR on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<COR_ERR_INTR_A)) ==
- (intpend_val & ~(1L<<COR_ERR_INTR_A)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED COR_ERR_INTR_A on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<COR_ERR_INTR_B)) ==
- (intpend_val & ~(1L<<COR_ERR_INTR_B)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED COR_ERR_INTR_B on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<MD_COR_ERR_INTR)) ==
- (intpend_val & ~(1L<<MD_COR_ERR_INTR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED MD_COR_ERR_INTR on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<NI_ERROR_INTR)) ==
- (intpend_val & ~(1L<<NI_ERROR_INTR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED NI_ERROR_INTR on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- if ( (bit = ~(1L<<MSC_PANIC_INTR)) ==
- (intpend_val & ~(1L<<MSC_PANIC_INTR)) ) {
- LOCAL_HUB_CLR_INTR(bit);
- panic("RECEIVED MSC_PANIC_INTR on cpu %d, cnode %dn",
- smp_processor_id(),
- cpuid_to_cnodeid(smp_processor_id()));
- }
- printk("Received SGI_XB_ERROR_IRQ (182) but no intpend1 bits are set???n");
- return;
- default:
- printk("Received invalid irq in snia_error_intr_handler()/n");
- }
- }