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/*
* Interrupt handling for INTC2-based IRQ.
*
* Copyright (C) 2001 David J. Mckay (david.mckay@st.com)
* Copyright (C) 2005, 2006 Paul Mundt (lethal@linux-sh.org)
*
* May be copied or modified under the terms of the GNU General Public
* License. See linux/COPYING for more information.
*
* These are the "new Hitachi style" interrupts, as present on the
* Hitachi 7751, the STM ST40 STB1, SH7760, and SH7780.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <asm/system.h>
#include <asm/io.h>
static void disable_intc2_irq(unsigned int irq)
{
struct intc2_data *p = get_irq_chip_data(irq);
ctrl_outl(1 << p->msk_shift,
INTC2_BASE + INTC2_INTMSK_OFFSET + p->msk_offset);
}
static void enable_intc2_irq(unsigned int irq)
{
struct intc2_data *p = get_irq_chip_data(irq);
ctrl_outl(1 << p->msk_shift,
INTC2_BASE + INTC2_INTMSKCLR_OFFSET + p->msk_offset);
}
static struct irq_chip intc2_irq_chip = {
.name = "INTC2",
.mask = disable_intc2_irq,
.unmask = enable_intc2_irq,
.mask_ack = disable_intc2_irq,
};
/*
* Setup an INTC2 style interrupt.
* NOTE: Unlike IPR interrupts, parameters are not shifted by this code,
* allowing the use of the numbers straight out of the datasheet.
* For example:
* PIO1 which is INTPRI00[19,16] and INTMSK00[13]
* would be: ^ ^ ^ ^
* | | | |
* make_intc2_irq(84, 0, 16, 0, 13);
*/
void make_intc2_irq(struct intc2_data *p)
{
unsigned int flags;
unsigned long ipr;
disable_irq_nosync(p->irq);
/* Set the priority level */
local_irq_save(flags);
ipr = ctrl_inl(INTC2_BASE + INTC2_INTPRI_OFFSET + p->ipr_offset);
ipr &= ~(0xf << p->ipr_shift);
ipr |= p->priority << p->ipr_shift;
ctrl_outl(ipr, INTC2_BASE + INTC2_INTPRI_OFFSET + p->ipr_offset);
local_irq_restore(flags);
set_irq_chip_and_handler_name(p->irq, &intc2_irq_chip,
handle_level_irq, "level");
set_irq_chip_data(p->irq, p);
enable_intc2_irq(p->irq);
}
static struct intc2_data intc2_irq_table[] = {
#if defined(CONFIG_CPU_SUBTYPE_ST40)
{64, 0, 0, 0, 0, 13}, /* PCI serr */
{65, 0, 4, 0, 1, 13}, /* PCI err */
{66, 0, 4, 0, 2, 13}, /* PCI ad */
{67, 0, 4, 0, 3, 13}, /* PCI pwd down */
{72, 0, 8, 0, 5, 13}, /* DMAC INT0 */
{73, 0, 8, 0, 6, 13}, /* DMAC INT1 */
{74, 0, 8, 0, 7, 13}, /* DMAC INT2 */
{75, 0, 8, 0, 8, 13}, /* DMAC INT3 */
{76, 0, 8, 0, 9, 13}, /* DMAC INT4 */
{78, 0, 8, 0, 11, 13}, /* DMAC ERR */
{80, 0, 12, 0, 12, 13}, /* PIO0 */
{84, 0, 16, 0, 13, 13}, /* PIO1 */
{88, 0, 20, 0, 14, 13}, /* PIO2 */
{112, 4, 0, 4, 0, 13}, /* Mailbox */
#ifdef CONFIG_CPU_SUBTYPE_ST40GX1
{116, 4, 4, 4, 4, 13}, /* SSC0 */
{120, 4, 8, 4, 8, 13}, /* IR Blaster */
{124, 4, 12, 4, 12, 13}, /* USB host */
{128, 4, 16, 4, 16, 13}, /* Video processor BLITTER */
{132, 4, 20, 4, 20, 13}, /* UART0 */
{134, 4, 20, 4, 22, 13}, /* UART2 */
{136, 4, 24, 4, 24, 13}, /* IO_PIO0 */
{140, 4, 28, 4, 28, 13}, /* EMPI */
{144, 8, 0, 8, 0, 13}, /* MAFE */
{148, 8, 4, 8, 4, 13}, /* PWM */
{152, 8, 8, 8, 8, 13}, /* SSC1 */
{156, 8, 12, 8, 12, 13}, /* IO_PIO1 */
{160, 8, 16, 8, 16, 13}, /* USB target */
{164, 8, 20, 8, 20, 13}, /* UART1 */
{168, 8, 24, 8, 24, 13}, /* Teletext */
{172, 8, 28, 8, 28, 13}, /* VideoSync VTG */
{173, 8, 28, 8, 29, 13}, /* VideoSync DVP0 */
{174, 8, 28, 8, 30, 13}, /* VideoSync DVP1 */
#endif
#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
/*
* SH7760 INTC2-Style interrupts, vectors IRQ48-111 INTEVT 0x800-0xFE0
*/
/* INTPRIO0 | INTMSK0 */
{48, 0, 28, 0, 31, 3}, /* IRQ 4 */
{49, 0, 24, 0, 30, 3}, /* IRQ 3 */
{50, 0, 20, 0, 29, 3}, /* IRQ 2 */
{51, 0, 16, 0, 28, 3}, /* IRQ 1 */
/* 52-55 (INTEVT 0x880-0x8E0) unused/reserved */
/* INTPRIO4 | INTMSK0 */
{56, 4, 28, 0, 25, 3}, /* HCAN2_CHAN0 */
{57, 4, 24, 0, 24, 3}, /* HCAN2_CHAN1 */
{58, 4, 20, 0, 23, 3}, /* I2S_CHAN0 */
{59, 4, 16, 0, 22, 3}, /* I2S_CHAN1 */
{60, 4, 12, 0, 21, 3}, /* AC97_CHAN0 */
{61, 4, 8, 0, 20, 3}, /* AC97_CHAN1 */
{62, 4, 4, 0, 19, 3}, /* I2C_CHAN0 */
{63, 4, 0, 0, 18, 3}, /* I2C_CHAN1 */
/* INTPRIO8 | INTMSK0 */
{52, 8, 16, 0, 11, 3}, /* SCIF0_ERI_IRQ */
{53, 8, 16, 0, 10, 3}, /* SCIF0_RXI_IRQ */
{54, 8, 16, 0, 9, 3}, /* SCIF0_BRI_IRQ */
{55, 8, 16, 0, 8, 3}, /* SCIF0_TXI_IRQ */
{64, 8, 28, 0, 17, 3}, /* USBHI_IRQ */
{65, 8, 24, 0, 16, 3}, /* LCDC */
/* 66, 67 unused */
{68, 8, 20, 0, 14, 13}, /* DMABRGI0_IRQ */
{69, 8, 20, 0, 13, 13}, /* DMABRGI1_IRQ */
{70, 8, 20, 0, 12, 13}, /* DMABRGI2_IRQ */
/* 71 unused */
{72, 8, 12, 0, 7, 3}, /* SCIF1_ERI_IRQ */
{73, 8, 12, 0, 6, 3}, /* SCIF1_RXI_IRQ */
{74, 8, 12, 0, 5, 3}, /* SCIF1_BRI_IRQ */
{75, 8, 12, 0, 4, 3}, /* SCIF1_TXI_IRQ */
{76, 8, 8, 0, 3, 3}, /* SCIF2_ERI_IRQ */
{77, 8, 8, 0, 2, 3}, /* SCIF2_RXI_IRQ */
{78, 8, 8, 0, 1, 3}, /* SCIF2_BRI_IRQ */
{79, 8, 8, 0, 0, 3}, /* SCIF2_TXI_IRQ */
/* | INTMSK4 */
{80, 8, 4, 4, 23, 3}, /* SIM_ERI */
{81, 8, 4, 4, 22, 3}, /* SIM_RXI */
{82, 8, 4, 4, 21, 3}, /* SIM_TXI */
{83, 8, 4, 4, 20, 3}, /* SIM_TEI */
{84, 8, 0, 4, 19, 3}, /* HSPII */
/* INTPRIOC | INTMSK4 */
/* 85-87 unused/reserved */
{88, 12, 20, 4, 18, 3}, /* MMCI0 */
{89, 12, 20, 4, 17, 3}, /* MMCI1 */
{90, 12, 20, 4, 16, 3}, /* MMCI2 */
{91, 12, 20, 4, 15, 3}, /* MMCI3 */
{92, 12, 12, 4, 6, 3}, /* MFI (unsure, bug? in my 7760 manual*/
/* 93-107 reserved/undocumented */
{108,12, 4, 4, 1, 3}, /* ADC */
{109,12, 0, 4, 0, 3}, /* CMTI */
/* 110-111 reserved/unused */
#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
{ TIMER_IRQ, 0, 24, 0, INTC_TMU0_MSK, 2},
{ 21, 1, 0, 0, INTC_RTC_MSK, TIMER_PRIORITY },
{ 22, 1, 1, 0, INTC_RTC_MSK, TIMER_PRIORITY },
{ 23, 1, 2, 0, INTC_RTC_MSK, TIMER_PRIORITY },
{ SCIF0_ERI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
{ SCIF0_RXI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
{ SCIF0_BRI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
{ SCIF0_TXI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
{ SCIF1_ERI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY },
{ SCIF1_RXI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY },
{ SCIF1_BRI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY },
{ SCIF1_TXI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY },
{ PCIC0_IRQ, 0x10, 8, 0, INTC_PCIC0_MSK, PCIC0_PRIORITY },
{ PCIC1_IRQ, 0x10, 0, 0, INTC_PCIC1_MSK, PCIC1_PRIORITY },
{ PCIC2_IRQ, 0x14, 24, 0, INTC_PCIC2_MSK, PCIC2_PRIORITY },
{ PCIC3_IRQ, 0x14, 16, 0, INTC_PCIC3_MSK, PCIC3_PRIORITY },
{ PCIC4_IRQ, 0x14, 8, 0, INTC_PCIC4_MSK, PCIC4_PRIORITY },
#endif
};
void __init init_IRQ_intc2(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(intc2_irq_table); i++)
make_intc2_irq(intc2_irq_table + i);
}
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