diff options
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/include/asm/def_LPBlackfin.h | 1 | ||||
| -rw-r--r-- | arch/blackfin/mach-bf609/Kconfig | 6 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/cache-c.c | 10 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/ints-priority.c | 41 |
4 files changed, 37 insertions, 21 deletions
diff --git a/arch/blackfin/include/asm/def_LPBlackfin.h b/arch/blackfin/include/asm/def_LPBlackfin.h index ca67145c6a4..c5c8d8a3a5f 100644 --- a/arch/blackfin/include/asm/def_LPBlackfin.h +++ b/arch/blackfin/include/asm/def_LPBlackfin.h @@ -544,6 +544,7 @@ do { \ #define DCBS_P 0x04 /* L1 Data Cache Bank Select */ #define PORT_PREF0_P 0x12 /* DAG0 Port Preference */ #define PORT_PREF1_P 0x13 /* DAG1 Port Preference */ +#define RDCHK 0x9 /* Enable L1 Parity Check */ /* Masks */ #define ENDM 0x00000001 /* (doesn't really exist) Enable diff --git a/arch/blackfin/mach-bf609/Kconfig b/arch/blackfin/mach-bf609/Kconfig index b0fca44110b..6584190faeb 100644 --- a/arch/blackfin/mach-bf609/Kconfig +++ b/arch/blackfin/mach-bf609/Kconfig @@ -17,6 +17,12 @@ config SEC_IRQ_PRIORITY_LEVELS Divide the total number of interrupt priority levels into sub-levels. There is 2 ^ (SEC_IRQ_PRIORITY_LEVELS + 1) different levels. +config L1_PARITY_CHECK + bool "Enable L1 parity check" + default n + help + Enable the L1 parity check in L1 sram. A fault event is raised + when L1 parity error is found. comment "System Cross Bar Priority Assignment" diff --git a/arch/blackfin/mach-common/cache-c.c b/arch/blackfin/mach-common/cache-c.c index 1a5a28829c6..f4adedc9289 100644 --- a/arch/blackfin/mach-common/cache-c.c +++ b/arch/blackfin/mach-common/cache-c.c @@ -41,6 +41,16 @@ bfin_cache_init(struct cplb_entry *cplb_tbl, unsigned long cplb_addr, unsigned long mem_mask) { int i; +#ifdef CONFIG_L1_PARITY_CHECK + u32 ctrl; + + if (cplb_addr == DCPLB_ADDR0) { + ctrl = bfin_read32(mem_control) | (1 << RDCHK); + CSYNC(); + bfin_write32(mem_control, ctrl); + SSYNC(); + } +#endif for (i = 0; i < MAX_CPLBS; i++) { bfin_write32(cplb_addr + i * 4, cplb_tbl[i].addr); diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c index ca75613231c..867b7cef204 100644 --- a/arch/blackfin/mach-common/ints-priority.c +++ b/arch/blackfin/mach-common/ints-priority.c @@ -471,13 +471,8 @@ void handle_sec_ssi_fault(uint32_t gstat) } -void handle_sec_fault(unsigned int irq, struct irq_desc *desc) +void handle_sec_fault(uint32_t sec_gstat) { - uint32_t sec_gstat; - - raw_spin_lock(&desc->lock); - - sec_gstat = bfin_read32(SEC_GSTAT); if (sec_gstat & SEC_GSTAT_ERR) { switch (sec_gstat & SEC_GSTAT_ERRC) { @@ -494,18 +489,16 @@ void handle_sec_fault(unsigned int irq, struct irq_desc *desc) } - - raw_spin_unlock(&desc->lock); - - handle_fasteoi_irq(irq, desc); } -void handle_core_fault(unsigned int irq, struct irq_desc *desc) +static struct irqaction bfin_fault_irq = { + .name = "Blackfin fault", +}; + +static irqreturn_t bfin_fault_routine(int irq, void *data) { struct pt_regs *fp = get_irq_regs(); - raw_spin_lock(&desc->lock); - switch (irq) { case IRQ_C0_DBL_FAULT: double_fault_c(fp); @@ -522,11 +515,15 @@ void handle_core_fault(unsigned int irq, struct irq_desc *desc) case IRQ_C0_NMI_L1_PARITY_ERR: panic("Core 0 NMI L1 parity error"); break; + case IRQ_SEC_ERR: + pr_err("SEC error\n"); + handle_sec_fault(bfin_read32(SEC_GSTAT)); + break; default: - panic("Core 1 fault %d occurs unexpectedly", irq); + panic("Unknown fault %d", irq); } - raw_spin_unlock(&desc->lock); + return IRQ_HANDLED; } #endif /* SEC_GCTL */ @@ -1195,12 +1192,7 @@ int __init init_arch_irq(void) handle_percpu_irq); } else { irq_set_chip(irq, &bfin_sec_irqchip); - if (irq == IRQ_SEC_ERR) - irq_set_handler(irq, handle_sec_fault); - else if (irq >= IRQ_C0_DBL_FAULT && irq < CORE_IRQS) - irq_set_handler(irq, handle_core_fault); - else - irq_set_handler(irq, handle_fasteoi_irq); + irq_set_handler(irq, handle_fasteoi_irq); __irq_set_preflow_handler(irq, bfin_sec_preflow_handler); } } @@ -1239,6 +1231,13 @@ int __init init_arch_irq(void) register_syscore_ops(&sec_pm_syscore_ops); #endif + bfin_fault_irq.handler = bfin_fault_routine; +#ifdef CONFIG_L1_PARITY_CHECK + setup_irq(IRQ_C0_NMI_L1_PARITY_ERR, &bfin_fault_irq); +#endif + setup_irq(IRQ_C0_DBL_FAULT, &bfin_fault_irq); + setup_irq(IRQ_SEC_ERR, &bfin_fault_irq); + return 0; } |