249 lines
6.6 KiB
C
249 lines
6.6 KiB
C
/*
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* linux/arch/m32r/platforms/usrv/setup.c
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*
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* Setup routines for MITSUBISHI uServer
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*
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* Copyright (c) 2001, 2002, 2003 Hiroyuki Kondo, Hirokazu Takata,
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* Hitoshi Yamamoto
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*/
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#include <linux/irq.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <asm/system.h>
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#include <asm/m32r.h>
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#include <asm/io.h>
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#define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
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icu_data_t icu_data[M32700UT_NUM_CPU_IRQ];
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static void disable_mappi_irq(unsigned int irq)
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{
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unsigned long port, data;
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port = irq2port(irq);
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data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
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outl(data, port);
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}
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static void enable_mappi_irq(unsigned int irq)
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{
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unsigned long port, data;
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port = irq2port(irq);
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data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
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outl(data, port);
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}
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static void mask_and_ack_mappi(unsigned int irq)
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{
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disable_mappi_irq(irq);
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}
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static void end_mappi_irq(unsigned int irq)
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{
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enable_mappi_irq(irq);
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}
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static unsigned int startup_mappi_irq(unsigned int irq)
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{
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enable_mappi_irq(irq);
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return 0;
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}
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static void shutdown_mappi_irq(unsigned int irq)
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{
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unsigned long port;
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port = irq2port(irq);
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outl(M32R_ICUCR_ILEVEL7, port);
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}
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static struct irq_chip mappi_irq_type =
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{
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.typename = "M32700-IRQ",
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.startup = startup_mappi_irq,
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.shutdown = shutdown_mappi_irq,
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.enable = enable_mappi_irq,
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.disable = disable_mappi_irq,
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.ack = mask_and_ack_mappi,
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.end = end_mappi_irq
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};
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/*
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* Interrupt Control Unit of PLD on M32700UT (Level 2)
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*/
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#define irq2pldirq(x) ((x) - M32700UT_PLD_IRQ_BASE)
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#define pldirq2port(x) (unsigned long)((int)PLD_ICUCR1 + \
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(((x) - 1) * sizeof(unsigned short)))
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typedef struct {
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unsigned short icucr; /* ICU Control Register */
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} pld_icu_data_t;
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static pld_icu_data_t pld_icu_data[M32700UT_NUM_PLD_IRQ];
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static void disable_m32700ut_pld_irq(unsigned int irq)
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{
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unsigned long port, data;
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unsigned int pldirq;
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pldirq = irq2pldirq(irq);
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port = pldirq2port(pldirq);
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data = pld_icu_data[pldirq].icucr|PLD_ICUCR_ILEVEL7;
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outw(data, port);
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}
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static void enable_m32700ut_pld_irq(unsigned int irq)
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{
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unsigned long port, data;
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unsigned int pldirq;
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pldirq = irq2pldirq(irq);
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port = pldirq2port(pldirq);
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data = pld_icu_data[pldirq].icucr|PLD_ICUCR_IEN|PLD_ICUCR_ILEVEL6;
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outw(data, port);
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}
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static void mask_and_ack_m32700ut_pld(unsigned int irq)
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{
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disable_m32700ut_pld_irq(irq);
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}
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static void end_m32700ut_pld_irq(unsigned int irq)
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{
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enable_m32700ut_pld_irq(irq);
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end_mappi_irq(M32R_IRQ_INT1);
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}
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static unsigned int startup_m32700ut_pld_irq(unsigned int irq)
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{
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enable_m32700ut_pld_irq(irq);
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return 0;
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}
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static void shutdown_m32700ut_pld_irq(unsigned int irq)
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{
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unsigned long port;
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unsigned int pldirq;
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pldirq = irq2pldirq(irq);
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port = pldirq2port(pldirq);
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outw(PLD_ICUCR_ILEVEL7, port);
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}
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static struct irq_chip m32700ut_pld_irq_type =
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{
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.typename = "USRV-PLD-IRQ",
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.startup = startup_m32700ut_pld_irq,
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.shutdown = shutdown_m32700ut_pld_irq,
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.enable = enable_m32700ut_pld_irq,
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.disable = disable_m32700ut_pld_irq,
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.ack = mask_and_ack_m32700ut_pld,
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.end = end_m32700ut_pld_irq
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};
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void __init init_IRQ(void)
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{
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static int once = 0;
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int i;
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if (once)
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return;
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else
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once++;
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/* MFT2 : system timer */
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irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
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irq_desc[M32R_IRQ_MFT2].chip = &mappi_irq_type;
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irq_desc[M32R_IRQ_MFT2].action = 0;
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irq_desc[M32R_IRQ_MFT2].depth = 1;
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icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
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disable_mappi_irq(M32R_IRQ_MFT2);
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#if defined(CONFIG_SERIAL_M32R_SIO)
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/* SIO0_R : uart receive data */
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irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
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irq_desc[M32R_IRQ_SIO0_R].chip = &mappi_irq_type;
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irq_desc[M32R_IRQ_SIO0_R].action = 0;
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irq_desc[M32R_IRQ_SIO0_R].depth = 1;
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icu_data[M32R_IRQ_SIO0_R].icucr = 0;
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disable_mappi_irq(M32R_IRQ_SIO0_R);
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/* SIO0_S : uart send data */
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irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
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irq_desc[M32R_IRQ_SIO0_S].chip = &mappi_irq_type;
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irq_desc[M32R_IRQ_SIO0_S].action = 0;
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irq_desc[M32R_IRQ_SIO0_S].depth = 1;
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icu_data[M32R_IRQ_SIO0_S].icucr = 0;
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disable_mappi_irq(M32R_IRQ_SIO0_S);
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/* SIO1_R : uart receive data */
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irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
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irq_desc[M32R_IRQ_SIO1_R].chip = &mappi_irq_type;
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irq_desc[M32R_IRQ_SIO1_R].action = 0;
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irq_desc[M32R_IRQ_SIO1_R].depth = 1;
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icu_data[M32R_IRQ_SIO1_R].icucr = 0;
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disable_mappi_irq(M32R_IRQ_SIO1_R);
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/* SIO1_S : uart send data */
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irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
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irq_desc[M32R_IRQ_SIO1_S].chip = &mappi_irq_type;
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irq_desc[M32R_IRQ_SIO1_S].action = 0;
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irq_desc[M32R_IRQ_SIO1_S].depth = 1;
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icu_data[M32R_IRQ_SIO1_S].icucr = 0;
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disable_mappi_irq(M32R_IRQ_SIO1_S);
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#endif /* CONFIG_SERIAL_M32R_SIO */
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/* INT#67-#71: CFC#0 IREQ on PLD */
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for (i = 0 ; i < CONFIG_M32R_CFC_NUM ; i++ ) {
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irq_desc[PLD_IRQ_CF0 + i].status = IRQ_DISABLED;
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irq_desc[PLD_IRQ_CF0 + i].chip = &m32700ut_pld_irq_type;
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irq_desc[PLD_IRQ_CF0 + i].action = 0;
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irq_desc[PLD_IRQ_CF0 + i].depth = 1; /* disable nested irq */
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pld_icu_data[irq2pldirq(PLD_IRQ_CF0 + i)].icucr
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= PLD_ICUCR_ISMOD01; /* 'L' level sense */
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disable_m32700ut_pld_irq(PLD_IRQ_CF0 + i);
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}
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#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
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/* INT#76: 16552D#0 IREQ on PLD */
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irq_desc[PLD_IRQ_UART0].status = IRQ_DISABLED;
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irq_desc[PLD_IRQ_UART0].chip = &m32700ut_pld_irq_type;
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irq_desc[PLD_IRQ_UART0].action = 0;
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irq_desc[PLD_IRQ_UART0].depth = 1; /* disable nested irq */
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pld_icu_data[irq2pldirq(PLD_IRQ_UART0)].icucr
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= PLD_ICUCR_ISMOD03; /* 'H' level sense */
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disable_m32700ut_pld_irq(PLD_IRQ_UART0);
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/* INT#77: 16552D#1 IREQ on PLD */
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irq_desc[PLD_IRQ_UART1].status = IRQ_DISABLED;
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irq_desc[PLD_IRQ_UART1].chip = &m32700ut_pld_irq_type;
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irq_desc[PLD_IRQ_UART1].action = 0;
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irq_desc[PLD_IRQ_UART1].depth = 1; /* disable nested irq */
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pld_icu_data[irq2pldirq(PLD_IRQ_UART1)].icucr
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= PLD_ICUCR_ISMOD03; /* 'H' level sense */
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disable_m32700ut_pld_irq(PLD_IRQ_UART1);
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#endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
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#if defined(CONFIG_IDC_AK4524) || defined(CONFIG_IDC_AK4524_MODULE)
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/* INT#80: AK4524 IREQ on PLD */
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irq_desc[PLD_IRQ_SNDINT].status = IRQ_DISABLED;
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irq_desc[PLD_IRQ_SNDINT].chip = &m32700ut_pld_irq_type;
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irq_desc[PLD_IRQ_SNDINT].action = 0;
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irq_desc[PLD_IRQ_SNDINT].depth = 1; /* disable nested irq */
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pld_icu_data[irq2pldirq(PLD_IRQ_SNDINT)].icucr
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= PLD_ICUCR_ISMOD01; /* 'L' level sense */
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disable_m32700ut_pld_irq(PLD_IRQ_SNDINT);
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#endif /* CONFIG_IDC_AK4524 || CONFIG_IDC_AK4524_MODULE */
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/*
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* INT1# is used for UART, MMC, CF Controller in FPGA.
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* We enable it here.
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*/
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icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_ISMOD11;
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enable_mappi_irq(M32R_IRQ_INT1);
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}
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