diff options
Diffstat (limited to 'arch/m32r/kernel/setup_mappi.c')
| -rw-r--r-- | arch/m32r/kernel/setup_mappi.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/arch/m32r/kernel/setup_mappi.c b/arch/m32r/kernel/setup_mappi.c new file mode 100644 index 00000000000..1e74110f067 --- /dev/null +++ b/arch/m32r/kernel/setup_mappi.c @@ -0,0 +1,160 @@ +/* + * linux/arch/m32r/kernel/setup_mappi.c + * + * Setup routines for Renesas MAPPI Board + * + * Copyright (c) 2001, 2002 Hiroyuki Kondo, Hirokazu Takata, + * Hitoshi Yamamoto + */ + +#include <linux/config.h> +#include <linux/irq.h> +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/system.h> +#include <asm/m32r.h> +#include <asm/io.h> + +#define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long))) + +#ifndef CONFIG_SMP +typedef struct { + unsigned long icucr; /* ICU Control Register */ +} icu_data_t; +#endif /* CONFIG_SMP */ + +icu_data_t icu_data[NR_IRQS]; + +static void disable_mappi_irq(unsigned int irq) +{ + unsigned long port, data; + + port = irq2port(irq); + data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7; + outl(data, port); +} + +static void enable_mappi_irq(unsigned int irq) +{ + unsigned long port, data; + + port = irq2port(irq); + data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6; + outl(data, port); +} + +static void mask_and_ack_mappi(unsigned int irq) +{ + disable_mappi_irq(irq); +} + +static void end_mappi_irq(unsigned int irq) +{ + enable_mappi_irq(irq); +} + +static unsigned int startup_mappi_irq(unsigned int irq) +{ + enable_mappi_irq(irq); + return (0); +} + +static void shutdown_mappi_irq(unsigned int irq) +{ + unsigned long port; + + port = irq2port(irq); + outl(M32R_ICUCR_ILEVEL7, port); +} + +static struct hw_interrupt_type mappi_irq_type = +{ + "MAPPI-IRQ", + startup_mappi_irq, + shutdown_mappi_irq, + enable_mappi_irq, + disable_mappi_irq, + mask_and_ack_mappi, + end_mappi_irq +}; + +void __init init_IRQ(void) +{ + static int once = 0; + + if (once) + return; + else + once++; + +#ifdef CONFIG_NE2000 + /* INT0 : LAN controller (RTL8019AS) */ + irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_INT0].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_INT0].action = 0; + irq_desc[M32R_IRQ_INT0].depth = 1; + icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10; + disable_mappi_irq(M32R_IRQ_INT0); +#endif /* CONFIG_M32R_NE2000 */ + + /* MFT2 : system timer */ + irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_MFT2].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_MFT2].action = 0; + irq_desc[M32R_IRQ_MFT2].depth = 1; + icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN; + disable_mappi_irq(M32R_IRQ_MFT2); + +#ifdef CONFIG_SERIAL_M32R_SIO + /* SIO0_R : uart receive data */ + irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_SIO0_R].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_SIO0_R].action = 0; + irq_desc[M32R_IRQ_SIO0_R].depth = 1; + icu_data[M32R_IRQ_SIO0_R].icucr = 0; + disable_mappi_irq(M32R_IRQ_SIO0_R); + + /* SIO0_S : uart send data */ + irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_SIO0_S].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_SIO0_S].action = 0; + irq_desc[M32R_IRQ_SIO0_S].depth = 1; + icu_data[M32R_IRQ_SIO0_S].icucr = 0; + disable_mappi_irq(M32R_IRQ_SIO0_S); + + /* SIO1_R : uart receive data */ + irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_SIO1_R].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_SIO1_R].action = 0; + irq_desc[M32R_IRQ_SIO1_R].depth = 1; + icu_data[M32R_IRQ_SIO1_R].icucr = 0; + disable_mappi_irq(M32R_IRQ_SIO1_R); + + /* SIO1_S : uart send data */ + irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_SIO1_S].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_SIO1_S].action = 0; + irq_desc[M32R_IRQ_SIO1_S].depth = 1; + icu_data[M32R_IRQ_SIO1_S].icucr = 0; + disable_mappi_irq(M32R_IRQ_SIO1_S); +#endif /* CONFIG_SERIAL_M32R_SIO */ + +#if defined(CONFIG_M32R_PCC) + /* INT1 : pccard0 interrupt */ + irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_INT1].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_INT1].action = 0; + irq_desc[M32R_IRQ_INT1].depth = 1; + icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD00; + disable_mappi_irq(M32R_IRQ_INT1); + + /* INT2 : pccard1 interrupt */ + irq_desc[M32R_IRQ_INT2].status = IRQ_DISABLED; + irq_desc[M32R_IRQ_INT2].handler = &mappi_irq_type; + irq_desc[M32R_IRQ_INT2].action = 0; + irq_desc[M32R_IRQ_INT2].depth = 1; + icu_data[M32R_IRQ_INT2].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD00; + disable_mappi_irq(M32R_IRQ_INT2); +#endif /* CONFIG_M32RPCC */ +} |