diff options
Diffstat (limited to 'arch/sh/kernel/irq_ipr.c')
| -rw-r--r-- | arch/sh/kernel/irq_ipr.c | 152 |
1 files changed, 146 insertions, 6 deletions
diff --git a/arch/sh/kernel/irq_ipr.c b/arch/sh/kernel/irq_ipr.c index 918e010e9ea6..93fd32920ad6 100644 --- a/arch/sh/kernel/irq_ipr.c +++ b/arch/sh/kernel/irq_ipr.c @@ -116,14 +116,96 @@ void make_ipr_irq(unsigned int irq, unsigned int addr, int pos, int priority) disable_ipr_irq(irq); } +#if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) +static unsigned char pint_map[256]; +static unsigned long portcr_mask = 0; + +static void enable_pint_irq(unsigned int irq); +static void disable_pint_irq(unsigned int irq); + +/* shutdown is same as "disable" */ +#define shutdown_pint_irq disable_pint_irq + +static void mask_and_ack_pint(unsigned int); +static void end_pint_irq(unsigned int irq); + +static unsigned int startup_pint_irq(unsigned int irq) +{ + enable_pint_irq(irq); + return 0; /* never anything pending */ +} + +static struct hw_interrupt_type pint_irq_type = { + "PINT-IRQ", + startup_pint_irq, + shutdown_pint_irq, + enable_pint_irq, + disable_pint_irq, + mask_and_ack_pint, + end_pint_irq +}; + +static void disable_pint_irq(unsigned int irq) +{ + unsigned long val, flags; + + save_and_cli(flags); + val = ctrl_inw(INTC_INTER); + val &= ~(1 << (irq - PINT_IRQ_BASE)); + ctrl_outw(val, INTC_INTER); /* disable PINTn */ + portcr_mask &= ~(3 << (irq - PINT_IRQ_BASE)*2); + restore_flags(flags); +} + +static void enable_pint_irq(unsigned int irq) +{ + unsigned long val, flags; + + save_and_cli(flags); + val = ctrl_inw(INTC_INTER); + val |= 1 << (irq - PINT_IRQ_BASE); + ctrl_outw(val, INTC_INTER); /* enable PINTn */ + portcr_mask |= 3 << (irq - PINT_IRQ_BASE)*2; + restore_flags(flags); +} + +static void mask_and_ack_pint(unsigned int irq) +{ + disable_pint_irq(irq); +} + +static void end_pint_irq(unsigned int irq) +{ + enable_pint_irq(irq); +} + +void make_pint_irq(unsigned int irq) +{ + disable_irq_nosync(irq); + irq_desc[irq].handler = &pint_irq_type; + disable_pint_irq(irq); +} +#endif + void __init init_IRQ(void) { + int i; + make_ipr_irq(TIMER_IRQ, TIMER_IPR_ADDR, TIMER_IPR_POS, TIMER_PRIORITY); make_ipr_irq(RTC_IRQ, RTC_IPR_ADDR, RTC_IPR_POS, RTC_PRIORITY); +#ifdef SCI_ERI_IRQ make_ipr_irq(SCI_ERI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY); make_ipr_irq(SCI_RXI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY); make_ipr_irq(SCI_TXI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY); +#endif + +#ifdef SCIF1_ERI_IRQ + make_ipr_irq(SCIF1_ERI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY); + make_ipr_irq(SCIF1_RXI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY); + make_ipr_irq(SCIF1_BRI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY); + make_ipr_irq(SCIF1_TXI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY); +#endif #ifdef SCIF_ERI_IRQ make_ipr_irq(SCIF_ERI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY); @@ -171,12 +253,30 @@ void __init init_IRQ(void) * You should set corresponding bits of PFC to "00" * to enable these interrupts. */ - make_ipr_irq(IRQ0_IRQ, IRQ0_IRP_ADDR, IRQ0_IRP_POS, IRQ0_PRIORITY); - make_ipr_irq(IRQ1_IRQ, IRQ1_IRP_ADDR, IRQ1_IRP_POS, IRQ1_PRIORITY); - make_ipr_irq(IRQ2_IRQ, IRQ2_IRP_ADDR, IRQ2_IRP_POS, IRQ2_PRIORITY); - make_ipr_irq(IRQ3_IRQ, IRQ3_IRP_ADDR, IRQ3_IRP_POS, IRQ3_PRIORITY); - make_ipr_irq(IRQ4_IRQ, IRQ4_IRP_ADDR, IRQ4_IRP_POS, IRQ4_PRIORITY); - make_ipr_irq(IRQ5_IRQ, IRQ5_IRP_ADDR, IRQ5_IRP_POS, IRQ5_PRIORITY); + make_ipr_irq(IRQ0_IRQ, IRQ0_IPR_ADDR, IRQ0_IPR_POS, IRQ0_PRIORITY); + make_ipr_irq(IRQ1_IRQ, IRQ1_IPR_ADDR, IRQ1_IPR_POS, IRQ1_PRIORITY); + make_ipr_irq(IRQ2_IRQ, IRQ2_IPR_ADDR, IRQ2_IPR_POS, IRQ2_PRIORITY); + make_ipr_irq(IRQ3_IRQ, IRQ3_IPR_ADDR, IRQ3_IPR_POS, IRQ3_PRIORITY); + make_ipr_irq(IRQ4_IRQ, IRQ4_IPR_ADDR, IRQ4_IPR_POS, IRQ4_PRIORITY); + make_ipr_irq(IRQ5_IRQ, IRQ5_IPR_ADDR, IRQ5_IPR_POS, IRQ5_PRIORITY); + make_ipr_irq(PINT0_IRQ, PINT0_IPR_ADDR, PINT0_IPR_POS, PINT0_PRIORITY); + make_ipr_irq(PINT8_IRQ, PINT8_IPR_ADDR, PINT8_IPR_POS, PINT8_PRIORITY); + enable_ipr_irq(PINT0_IRQ); + enable_ipr_irq(PINT8_IRQ); + + for(i = 0; i < 16; i++) + make_pint_irq(PINT_IRQ_BASE + i); + for(i = 0; i < 256; i++) + { + if(i & 1) pint_map[i] = 0; + else if(i & 2) pint_map[i] = 1; + else if(i & 4) pint_map[i] = 2; + else if(i & 8) pint_map[i] = 3; + else if(i & 0x10) pint_map[i] = 4; + else if(i & 0x20) pint_map[i] = 5; + else if(i & 0x40) pint_map[i] = 6; + else if(i & 0x80) pint_map[i] = 7; + } #endif /* CONFIG_CPU_SUBTYPE_SH7707 || CONFIG_CPU_SUBTYPE_SH7709 */ /* Perform the machine specific initialisation */ @@ -184,3 +284,43 @@ void __init init_IRQ(void) sh_mv.mv_init_irq(); } } +#if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) +int ipr_irq_demux(int irq) +{ + unsigned long creg, dreg, d, sav; + + if(irq == PINT0_IRQ) + { +#if defined(CONFIG_CPU_SUBTYPE_SH7707) + creg = PORT_PACR; + dreg = PORT_PADR; +#else + creg = PORT_PCCR; + dreg = PORT_PCDR; +#endif + sav = ctrl_inw(creg); + ctrl_outw(sav | portcr_mask, creg); + d = (~ctrl_inb(dreg) ^ ctrl_inw(INTC_ICR2)) & ctrl_inw(INTC_INTER) & 0xff; + ctrl_outw(sav, creg); + if(d == 0) return irq; + return PINT_IRQ_BASE + pint_map[d]; + } + else if(irq == PINT8_IRQ) + { +#if defined(CONFIG_CPU_SUBTYPE_SH7707) + creg = PORT_PBCR; + dreg = PORT_PBDR; +#else + creg = PORT_PFCR; + dreg = PORT_PFDR; +#endif + sav = ctrl_inw(creg); + ctrl_outw(sav | (portcr_mask >> 16), creg); + d = (~ctrl_inb(dreg) ^ (ctrl_inw(INTC_ICR2) >> 8)) & (ctrl_inw(INTC_INTER) >> 8) & 0xff; + ctrl_outw(sav, creg); + if(d == 0) return irq; + return PINT_IRQ_BASE + 8 + pint_map[d]; + } + return irq; +} +#endif |