diff options
| -rw-r--r-- | arch/arm/mach-ixp2000/core.c | 46 | ||||
| -rw-r--r-- | include/asm-arm/arch-ixp2000/irqs.h | 35 |
2 files changed, 80 insertions, 1 deletions
diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c index c93a98b2a32..df140962bb0 100644 --- a/arch/arm/mach-ixp2000/core.c +++ b/arch/arm/mach-ixp2000/core.c @@ -402,6 +402,40 @@ static void ixp2000_pci_irq_unmask(unsigned int irq) ixp2000_reg_write(IXP2000_PCI_XSCALE_INT_ENABLE, (temp | (1 << 27))); } +/* + * Error interrupts. These are used extensively by the microengine drivers + */ +static void ixp2000_err_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) +{ + int i; + unsigned long status = *IXP2000_IRQ_ERR_STATUS; + + for(i = 31; i >= 0; i--) { + if(status & (1 << i)) { + desc = irq_desc + IRQ_IXP2000_DRAM0_MIN_ERR + i; + desc->handle(IRQ_IXP2000_DRAM0_MIN_ERR + i, desc, regs); + } + } +} + +static void ixp2000_err_irq_mask(unsigned int irq) +{ + ixp2000_reg_write(IXP2000_IRQ_ERR_ENABLE_CLR, + (1 << (irq - IRQ_IXP2000_DRAM0_MIN_ERR))); +} + +static void ixp2000_err_irq_unmask(unsigned int irq) +{ + ixp2000_reg_write(IXP2000_IRQ_ERR_ENABLE_SET, + (1 << (irq - IRQ_IXP2000_DRAM0_MIN_ERR))); +} + +static struct irqchip ixp2000_err_irq_chip = { + .ack = ixp2000_err_irq_mask, + .mask = ixp2000_err_irq_mask, + .unmask = ixp2000_err_irq_unmask +}; + static struct irqchip ixp2000_pci_irq_chip = { .ack = ixp2000_pci_irq_mask, .mask = ixp2000_pci_irq_mask, @@ -459,6 +493,18 @@ void __init ixp2000_init_irq(void) } else set_irq_flags(irq, 0); } + for (irq = IRQ_IXP2000_DRAM0_MIN_ERR; irq <= IRQ_IXP2000_SP_INT; irq++) { + if((1 << (irq - IRQ_IXP2000_DRAM0_MIN_ERR)) & + IXP2000_VALID_ERR_IRQ_MASK) { + set_irq_chip(irq, &ixp2000_err_irq_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, IRQF_VALID); + } + else + set_irq_flags(irq, 0); + } + set_irq_chained_handler(IRQ_IXP2000_ERRSUM, ixp2000_err_irq_handler); + /* * GPIO IRQs are invalid until someone sets the interrupt mode * by calling set_irq_type(). diff --git a/include/asm-arm/arch-ixp2000/irqs.h b/include/asm-arm/arch-ixp2000/irqs.h index 0deb96c12ad..62f09c7ff42 100644 --- a/include/asm-arm/arch-ixp2000/irqs.h +++ b/include/asm-arm/arch-ixp2000/irqs.h @@ -67,12 +67,45 @@ #define IRQ_IXP2000_PCIA 40 #define IRQ_IXP2000_PCIB 41 -#define NR_IXP2000_IRQS 42 +/* Int sources from IRQ_ERROR_STATUS */ +#define IRQ_IXP2000_DRAM0_MIN_ERR 42 +#define IRQ_IXP2000_DRAM0_MAJ_ERR 43 +#define IRQ_IXP2000_DRAM1_MIN_ERR 44 +#define IRQ_IXP2000_DRAM1_MAJ_ERR 45 +#define IRQ_IXP2000_DRAM2_MIN_ERR 46 +#define IRQ_IXP2000_DRAM2_MAJ_ERR 47 +/* 48-57 reserved */ +#define IRQ_IXP2000_SRAM0_ERR 58 +#define IRQ_IXP2000_SRAM1_ERR 59 +#define IRQ_IXP2000_SRAM2_ERR 60 +#define IRQ_IXP2000_SRAM3_ERR 61 +/* 62-65 reserved */ +#define IRQ_IXP2000_MEDIA_ERR 66 +#define IRQ_IXP2000_PCI_ERR 67 +#define IRQ_IXP2000_SP_INT 68 + +#define NR_IXP2000_IRQS 69 #define IXP2000_BOARD_IRQ(x) (NR_IXP2000_IRQS + (x)) #define IXP2000_BOARD_IRQ_MASK(irq) (1 << (irq - NR_IXP2000_IRQS)) +#define IXP2000_ERR_IRQ_MASK(irq) ( 1 << (irq - IRQ_IXP2000_DRAM0_MIN_ERR)) +#define IXP2000_VALID_ERR_IRQ_MASK (\ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_DRAM0_MIN_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_DRAM0_MAJ_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_DRAM1_MIN_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_DRAM1_MAJ_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_DRAM2_MIN_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_DRAM2_MAJ_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_SRAM0_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_SRAM1_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_SRAM2_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_SRAM3_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_MEDIA_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_PCI_ERR) | \ + IXP2000_ERR_IRQ_MASK(IRQ_IXP2000_SP_INT) ) + /* * This allows for all the on-chip sources plus up to 32 CPLD based * IRQs. Should be more than enough. |