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original_kernel/arch/mips/alchemy/common/irq.c

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/*
* Copyright 2001, 2007-2008 MontaVista Software Inc.
* Author: MontaVista Software, Inc. <source@mvista.com>
*
* Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/export.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/syscore_ops.h>
#include <asm/irq_cpu.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/gpio-au1300.h>
/* Interrupt Controller register offsets */
#define IC_CFG0RD 0x40
#define IC_CFG0SET 0x40
#define IC_CFG0CLR 0x44
#define IC_CFG1RD 0x48
#define IC_CFG1SET 0x48
#define IC_CFG1CLR 0x4C
#define IC_CFG2RD 0x50
#define IC_CFG2SET 0x50
#define IC_CFG2CLR 0x54
#define IC_REQ0INT 0x54
#define IC_SRCRD 0x58
#define IC_SRCSET 0x58
#define IC_SRCCLR 0x5C
#define IC_REQ1INT 0x5C
#define IC_ASSIGNRD 0x60
#define IC_ASSIGNSET 0x60
#define IC_ASSIGNCLR 0x64
#define IC_WAKERD 0x68
#define IC_WAKESET 0x68
#define IC_WAKECLR 0x6C
#define IC_MASKRD 0x70
#define IC_MASKSET 0x70
#define IC_MASKCLR 0x74
#define IC_RISINGRD 0x78
#define IC_RISINGCLR 0x78
#define IC_FALLINGRD 0x7C
#define IC_FALLINGCLR 0x7C
#define IC_TESTBIT 0x80
/* per-processor fixed function irqs */
struct alchemy_irqmap {
int irq; /* linux IRQ number */
int type; /* IRQ_TYPE_ */
int prio; /* irq priority, 0 highest, 3 lowest */
int internal; /* GPIC: internal source (no ext. pin)? */
};
static int au1x_ic_settype(struct irq_data *d, unsigned int type);
static int au1300_gpic_settype(struct irq_data *d, unsigned int type);
/* NOTE on interrupt priorities: The original writers of this code said:
*
* Because of the tight timing of SETUP token to reply transactions,
* the USB devices-side packet complete interrupt (USB_DEV_REQ_INT)
* needs the highest priority.
*/
struct alchemy_irqmap au1000_irqmap[] __initdata = {
{ AU1000_UART0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_UART1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_UART2_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_UART3_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_SSI0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_SSI1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE+1, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE+2, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE+3, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE+4, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE+5, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE+6, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_DMA_INT_BASE+7, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_TOY_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_RTC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 0, 0 },
{ AU1000_IRDA_TX_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_IRDA_RX_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH, 0, 0 },
{ AU1000_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_USB_HOST_INT, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1000_ACSYNC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1000_MAC0_DMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_MAC1_DMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1000_AC97C_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ -1, },
};
struct alchemy_irqmap au1500_irqmap[] __initdata = {
{ AU1500_UART0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_PCI_INTA, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1500_PCI_INTB, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1500_UART3_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_PCI_INTC, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1500_PCI_INTD, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1500_DMA_INT_BASE, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_DMA_INT_BASE+1, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_DMA_INT_BASE+2, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_DMA_INT_BASE+3, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_DMA_INT_BASE+4, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_DMA_INT_BASE+5, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_DMA_INT_BASE+6, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_DMA_INT_BASE+7, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_TOY_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_RTC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 0, 0 },
{ AU1500_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH, 0, 0 },
{ AU1500_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_USB_HOST_INT, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1500_ACSYNC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1500_MAC0_DMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_MAC1_DMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1500_AC97C_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ -1, },
};
struct alchemy_irqmap au1100_irqmap[] __initdata = {
{ AU1100_UART0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_UART1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_SD_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_UART3_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_SSI0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_SSI1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE+1, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE+2, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE+3, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE+4, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE+5, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE+6, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_DMA_INT_BASE+7, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_TOY_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_RTC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 0, 0 },
{ AU1100_IRDA_TX_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_IRDA_RX_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH, 0, 0 },
{ AU1100_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_USB_HOST_INT, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1100_ACSYNC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1100_MAC0_DMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_LCD_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1100_AC97C_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ -1, },
};
struct alchemy_irqmap au1550_irqmap[] __initdata = {
{ AU1550_UART0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_PCI_INTA, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1550_PCI_INTB, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1550_DDMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_CRYPTO_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_PCI_INTC, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1550_PCI_INTD, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1550_PCI_RST_INT, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1550_UART1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_UART3_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_PSC0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_PSC1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_PSC2_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_PSC3_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_TOY_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_RTC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 0, 0 },
{ AU1550_NAND_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH, 0, 0 },
{ AU1550_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1550_USB_HOST_INT, IRQ_TYPE_LEVEL_LOW, 1, 0 },
{ AU1550_MAC0_DMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1550_MAC1_DMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ -1, },
};
struct alchemy_irqmap au1200_irqmap[] __initdata = {
{ AU1200_UART0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_SWT_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_SD_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_DDMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_MAE_BE_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_UART1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_MAE_FE_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_PSC0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_PSC1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_AES_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_CAMERA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_TOY_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_RTC_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 0, 0 },
{ AU1200_NAND_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
{ AU1200_USB_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_LCD_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ AU1200_MAE_BOTH_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0 },
{ -1, },
};
static struct alchemy_irqmap au1300_irqmap[] __initdata = {
/* multifunction: gpio pin or device */
{ AU1300_UART1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_UART2_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_UART3_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_SD1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_SD2_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_PSC0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_PSC1_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_PSC2_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_PSC3_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
{ AU1300_NAND_INT, IRQ_TYPE_LEVEL_HIGH, 1, 0, },
/* au1300 internal */
{ AU1300_DDMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_MMU_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_MPU_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_GPU_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_UDMA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_TOY_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_RTC_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING, 0, 1, },
{ AU1300_UART0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_SD0_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_USB_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_LCD_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_BSA_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_MPE_INT, IRQ_TYPE_EDGE_RISING, 1, 1, },
{ AU1300_ITE_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_AES_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ AU1300_CIM_INT, IRQ_TYPE_LEVEL_HIGH, 1, 1, },
{ -1, }, /* terminator */
};
/******************************************************************************/
static void au1x_ic0_unmask(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
__raw_writel(1 << bit, base + IC_MASKSET);
__raw_writel(1 << bit, base + IC_WAKESET);
wmb();
}
static void au1x_ic1_unmask(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
__raw_writel(1 << bit, base + IC_MASKSET);
__raw_writel(1 << bit, base + IC_WAKESET);
wmb();
}
static void au1x_ic0_mask(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
__raw_writel(1 << bit, base + IC_MASKCLR);
__raw_writel(1 << bit, base + IC_WAKECLR);
wmb();
}
static void au1x_ic1_mask(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
__raw_writel(1 << bit, base + IC_MASKCLR);
__raw_writel(1 << bit, base + IC_WAKECLR);
wmb();
}
static void au1x_ic0_ack(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
/*
* This may assume that we don't get interrupts from
* both edges at once, or if we do, that we don't care.
*/
__raw_writel(1 << bit, base + IC_FALLINGCLR);
__raw_writel(1 << bit, base + IC_RISINGCLR);
wmb();
}
static void au1x_ic1_ack(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
/*
* This may assume that we don't get interrupts from
* both edges at once, or if we do, that we don't care.
*/
__raw_writel(1 << bit, base + IC_FALLINGCLR);
__raw_writel(1 << bit, base + IC_RISINGCLR);
wmb();
}
static void au1x_ic0_maskack(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
__raw_writel(1 << bit, base + IC_WAKECLR);
__raw_writel(1 << bit, base + IC_MASKCLR);
__raw_writel(1 << bit, base + IC_RISINGCLR);
__raw_writel(1 << bit, base + IC_FALLINGCLR);
wmb();
}
static void au1x_ic1_maskack(struct irq_data *d)
{
unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
__raw_writel(1 << bit, base + IC_WAKECLR);
__raw_writel(1 << bit, base + IC_MASKCLR);
__raw_writel(1 << bit, base + IC_RISINGCLR);
__raw_writel(1 << bit, base + IC_FALLINGCLR);
wmb();
}
static int au1x_ic1_setwake(struct irq_data *d, unsigned int on)
{
int bit = d->irq - AU1000_INTC1_INT_BASE;
unsigned long wakemsk, flags;
/* only GPIO 0-7 can act as wakeup source. Fortunately these
* are wired up identically on all supported variants.
*/
if ((bit < 0) || (bit > 7))
return -EINVAL;
local_irq_save(flags);
wakemsk = alchemy_rdsys(AU1000_SYS_WAKEMSK);
if (on)
wakemsk |= 1 << bit;
else
wakemsk &= ~(1 << bit);
alchemy_wrsys(wakemsk, AU1000_SYS_WAKEMSK);
local_irq_restore(flags);
return 0;
}
/*
* irq_chips for both ICs; this way the mask handlers can be
* as short as possible.
*/
static struct irq_chip au1x_ic0_chip = {
.name = "Alchemy-IC0",
.irq_ack = au1x_ic0_ack,
.irq_mask = au1x_ic0_mask,
.irq_mask_ack = au1x_ic0_maskack,
.irq_unmask = au1x_ic0_unmask,
.irq_set_type = au1x_ic_settype,
};
static struct irq_chip au1x_ic1_chip = {
.name = "Alchemy-IC1",
.irq_ack = au1x_ic1_ack,
.irq_mask = au1x_ic1_mask,
.irq_mask_ack = au1x_ic1_maskack,
.irq_unmask = au1x_ic1_unmask,
.irq_set_type = au1x_ic_settype,
.irq_set_wake = au1x_ic1_setwake,
};
static int au1x_ic_settype(struct irq_data *d, unsigned int flow_type)
{
struct irq_chip *chip;
unsigned int bit, irq = d->irq;
irq_flow_handler_t handler = NULL;
unsigned char *name = NULL;
void __iomem *base;
int ret;
if (irq >= AU1000_INTC1_INT_BASE) {
bit = irq - AU1000_INTC1_INT_BASE;
chip = &au1x_ic1_chip;
base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
} else {
bit = irq - AU1000_INTC0_INT_BASE;
chip = &au1x_ic0_chip;
base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
}
if (bit > 31)
return -EINVAL;
ret = 0;
switch (flow_type) { /* cfgregs 2:1:0 */
case IRQ_TYPE_EDGE_RISING: /* 0:0:1 */
__raw_writel(1 << bit, base + IC_CFG2CLR);
__raw_writel(1 << bit, base + IC_CFG1CLR);
__raw_writel(1 << bit, base + IC_CFG0SET);
handler = handle_edge_irq;
name = "riseedge";
break;
case IRQ_TYPE_EDGE_FALLING: /* 0:1:0 */
__raw_writel(1 << bit, base + IC_CFG2CLR);
__raw_writel(1 << bit, base + IC_CFG1SET);
__raw_writel(1 << bit, base + IC_CFG0CLR);
handler = handle_edge_irq;
name = "falledge";
break;
case IRQ_TYPE_EDGE_BOTH: /* 0:1:1 */
__raw_writel(1 << bit, base + IC_CFG2CLR);
__raw_writel(1 << bit, base + IC_CFG1SET);
__raw_writel(1 << bit, base + IC_CFG0SET);
handler = handle_edge_irq;
name = "bothedge";
break;
case IRQ_TYPE_LEVEL_HIGH: /* 1:0:1 */
__raw_writel(1 << bit, base + IC_CFG2SET);
__raw_writel(1 << bit, base + IC_CFG1CLR);
__raw_writel(1 << bit, base + IC_CFG0SET);
handler = handle_level_irq;
name = "hilevel";
break;
case IRQ_TYPE_LEVEL_LOW: /* 1:1:0 */
__raw_writel(1 << bit, base + IC_CFG2SET);
__raw_writel(1 << bit, base + IC_CFG1SET);
__raw_writel(1 << bit, base + IC_CFG0CLR);
handler = handle_level_irq;
name = "lowlevel";
break;
case IRQ_TYPE_NONE: /* 0:0:0 */
__raw_writel(1 << bit, base + IC_CFG2CLR);
__raw_writel(1 << bit, base + IC_CFG1CLR);
__raw_writel(1 << bit, base + IC_CFG0CLR);
break;
default:
ret = -EINVAL;
}
irq_set_chip_handler_name_locked(d, chip, handler, name);
wmb();
return ret;
}
/******************************************************************************/
/*
* au1300_gpic_chgcfg - change PIN configuration.
* @gpio: pin to change (0-based GPIO number from datasheet).
* @clr: clear all bits set in 'clr'.
* @set: set these bits.
*
* modifies a pins' configuration register, bits set in @clr will
* be cleared in the register, bits in @set will be set.
*/
static inline void au1300_gpic_chgcfg(unsigned int gpio,
unsigned long clr,
unsigned long set)
{
void __iomem *r = AU1300_GPIC_ADDR;
unsigned long l;
r += gpio * 4; /* offset into pin config array */
l = __raw_readl(r + AU1300_GPIC_PINCFG);
l &= ~clr;
l |= set;
__raw_writel(l, r + AU1300_GPIC_PINCFG);
wmb();
}
/*
* au1300_pinfunc_to_gpio - assign a pin as GPIO input (GPIO ctrl).
* @pin: pin (0-based GPIO number from datasheet).
*
* Assigns a GPIO pin to the GPIO controller, so its level can either
* be read or set through the generic GPIO functions.
* If you need a GPOUT, use au1300_gpio_set_value(pin, 0/1).
* REVISIT: is this function really necessary?
*/
void au1300_pinfunc_to_gpio(enum au1300_multifunc_pins gpio)
{
au1300_gpio_direction_input(gpio + AU1300_GPIO_BASE);
}
EXPORT_SYMBOL_GPL(au1300_pinfunc_to_gpio);
/*
* au1300_pinfunc_to_dev - assign a pin to the device function.
* @pin: pin (0-based GPIO number from datasheet).
*
* Assigns a GPIO pin to its associated device function; the pin will be
* driven by the device and not through GPIO functions.
*/
void au1300_pinfunc_to_dev(enum au1300_multifunc_pins gpio)
{
void __iomem *r = AU1300_GPIC_ADDR;
unsigned long bit;
r += GPIC_GPIO_BANKOFF(gpio);
bit = GPIC_GPIO_TO_BIT(gpio);
__raw_writel(bit, r + AU1300_GPIC_DEVSEL);
wmb();
}
EXPORT_SYMBOL_GPL(au1300_pinfunc_to_dev);
/*
* au1300_set_irq_priority - set internal priority of IRQ.
* @irq: irq to set priority (linux irq number).
* @p: priority (0 = highest, 3 = lowest).
*/
void au1300_set_irq_priority(unsigned int irq, int p)
{
irq -= ALCHEMY_GPIC_INT_BASE;
au1300_gpic_chgcfg(irq, GPIC_CFG_IL_MASK, GPIC_CFG_IL_SET(p));
}
EXPORT_SYMBOL_GPL(au1300_set_irq_priority);
/*
* au1300_set_dbdma_gpio - assign a gpio to one of the DBDMA triggers.
* @dchan: dbdma trigger select (0, 1).
* @gpio: pin to assign as trigger.
*
* DBDMA controller has 2 external trigger sources; this function
* assigns a GPIO to the selected trigger.
*/
void au1300_set_dbdma_gpio(int dchan, unsigned int gpio)
{
unsigned long r;
if ((dchan >= 0) && (dchan <= 1)) {
r = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
r &= ~(0xff << (8 * dchan));
r |= (gpio & 0x7f) << (8 * dchan);
__raw_writel(r, AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
wmb();
}
}
static inline void gpic_pin_set_idlewake(unsigned int gpio, int allow)
{
au1300_gpic_chgcfg(gpio, GPIC_CFG_IDLEWAKE,
allow ? GPIC_CFG_IDLEWAKE : 0);
}
static void au1300_gpic_mask(struct irq_data *d)
{
void __iomem *r = AU1300_GPIC_ADDR;
unsigned long bit, irq = d->irq;
irq -= ALCHEMY_GPIC_INT_BASE;
r += GPIC_GPIO_BANKOFF(irq);
bit = GPIC_GPIO_TO_BIT(irq);
__raw_writel(bit, r + AU1300_GPIC_IDIS);
wmb();
gpic_pin_set_idlewake(irq, 0);
}
static void au1300_gpic_unmask(struct irq_data *d)
{
void __iomem *r = AU1300_GPIC_ADDR;
unsigned long bit, irq = d->irq;
irq -= ALCHEMY_GPIC_INT_BASE;
gpic_pin_set_idlewake(irq, 1);
r += GPIC_GPIO_BANKOFF(irq);
bit = GPIC_GPIO_TO_BIT(irq);
__raw_writel(bit, r + AU1300_GPIC_IEN);
wmb();
}
static void au1300_gpic_maskack(struct irq_data *d)
{
void __iomem *r = AU1300_GPIC_ADDR;
unsigned long bit, irq = d->irq;
irq -= ALCHEMY_GPIC_INT_BASE;
r += GPIC_GPIO_BANKOFF(irq);
bit = GPIC_GPIO_TO_BIT(irq);
__raw_writel(bit, r + AU1300_GPIC_IPEND); /* ack */
__raw_writel(bit, r + AU1300_GPIC_IDIS); /* mask */
wmb();
gpic_pin_set_idlewake(irq, 0);
}
static void au1300_gpic_ack(struct irq_data *d)
{
void __iomem *r = AU1300_GPIC_ADDR;
unsigned long bit, irq = d->irq;
irq -= ALCHEMY_GPIC_INT_BASE;
r += GPIC_GPIO_BANKOFF(irq);
bit = GPIC_GPIO_TO_BIT(irq);
__raw_writel(bit, r + AU1300_GPIC_IPEND); /* ack */
wmb();
}
static struct irq_chip au1300_gpic = {
.name = "GPIOINT",
.irq_ack = au1300_gpic_ack,
.irq_mask = au1300_gpic_mask,
.irq_mask_ack = au1300_gpic_maskack,
.irq_unmask = au1300_gpic_unmask,
.irq_set_type = au1300_gpic_settype,
};
static int au1300_gpic_settype(struct irq_data *d, unsigned int type)
{
unsigned long s;
unsigned char *name = NULL;
irq_flow_handler_t hdl = NULL;
switch (type) {
case IRQ_TYPE_LEVEL_HIGH:
s = GPIC_CFG_IC_LEVEL_HIGH;
name = "high";
hdl = handle_level_irq;
break;
case IRQ_TYPE_LEVEL_LOW:
s = GPIC_CFG_IC_LEVEL_LOW;
name = "low";
hdl = handle_level_irq;
break;
case IRQ_TYPE_EDGE_RISING:
s = GPIC_CFG_IC_EDGE_RISE;
name = "posedge";
hdl = handle_edge_irq;
break;
case IRQ_TYPE_EDGE_FALLING:
s = GPIC_CFG_IC_EDGE_FALL;
name = "negedge";
hdl = handle_edge_irq;
break;
case IRQ_TYPE_EDGE_BOTH:
s = GPIC_CFG_IC_EDGE_BOTH;
name = "bothedge";
hdl = handle_edge_irq;
break;
case IRQ_TYPE_NONE:
s = GPIC_CFG_IC_OFF;
name = "disabled";
hdl = handle_level_irq;
break;
default:
return -EINVAL;
}
irq_set_chip_handler_name_locked(d, &au1300_gpic, hdl, name);
au1300_gpic_chgcfg(d->irq - ALCHEMY_GPIC_INT_BASE, GPIC_CFG_IC_MASK, s);
return 0;
}
/******************************************************************************/
static inline void ic_init(void __iomem *base)
{
/* initialize interrupt controller to a safe state */
__raw_writel(0xffffffff, base + IC_CFG0CLR);
__raw_writel(0xffffffff, base + IC_CFG1CLR);
__raw_writel(0xffffffff, base + IC_CFG2CLR);
__raw_writel(0xffffffff, base + IC_MASKCLR);
__raw_writel(0xffffffff, base + IC_ASSIGNCLR);
__raw_writel(0xffffffff, base + IC_WAKECLR);
__raw_writel(0xffffffff, base + IC_SRCSET);
__raw_writel(0xffffffff, base + IC_FALLINGCLR);
__raw_writel(0xffffffff, base + IC_RISINGCLR);
__raw_writel(0x00000000, base + IC_TESTBIT);
wmb();
}
static unsigned long alchemy_gpic_pmdata[ALCHEMY_GPIC_INT_NUM + 6];
static inline void alchemy_ic_suspend_one(void __iomem *base, unsigned long *d)
{
d[0] = __raw_readl(base + IC_CFG0RD);
d[1] = __raw_readl(base + IC_CFG1RD);
d[2] = __raw_readl(base + IC_CFG2RD);
d[3] = __raw_readl(base + IC_SRCRD);
d[4] = __raw_readl(base + IC_ASSIGNRD);
d[5] = __raw_readl(base + IC_WAKERD);
d[6] = __raw_readl(base + IC_MASKRD);
ic_init(base); /* shut it up too while at it */
}
static inline void alchemy_ic_resume_one(void __iomem *base, unsigned long *d)
{
ic_init(base);
__raw_writel(d[0], base + IC_CFG0SET);
__raw_writel(d[1], base + IC_CFG1SET);
__raw_writel(d[2], base + IC_CFG2SET);
__raw_writel(d[3], base + IC_SRCSET);
__raw_writel(d[4], base + IC_ASSIGNSET);
__raw_writel(d[5], base + IC_WAKESET);
wmb();
__raw_writel(d[6], base + IC_MASKSET);
wmb();
}
static int alchemy_ic_suspend(void)
{
alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
alchemy_gpic_pmdata);
alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
&alchemy_gpic_pmdata[7]);
return 0;
}
static void alchemy_ic_resume(void)
{
alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
&alchemy_gpic_pmdata[7]);
alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
alchemy_gpic_pmdata);
}
static int alchemy_gpic_suspend(void)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
int i;
/* save 4 interrupt mask status registers */
alchemy_gpic_pmdata[0] = __raw_readl(base + AU1300_GPIC_IEN + 0x0);
alchemy_gpic_pmdata[1] = __raw_readl(base + AU1300_GPIC_IEN + 0x4);
alchemy_gpic_pmdata[2] = __raw_readl(base + AU1300_GPIC_IEN + 0x8);
alchemy_gpic_pmdata[3] = __raw_readl(base + AU1300_GPIC_IEN + 0xc);
/* save misc register(s) */
alchemy_gpic_pmdata[4] = __raw_readl(base + AU1300_GPIC_DMASEL);
/* molto silenzioso */
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
wmb();
/* save pin/int-type configuration */
base += AU1300_GPIC_PINCFG;
for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
alchemy_gpic_pmdata[i + 5] = __raw_readl(base + (i << 2));
wmb();
return 0;
}
static void alchemy_gpic_resume(void)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
int i;
/* disable all first */
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
wmb();
/* restore pin/int-type configurations */
base += AU1300_GPIC_PINCFG;
for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
__raw_writel(alchemy_gpic_pmdata[i + 5], base + (i << 2));
wmb();
/* restore misc register(s) */
base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
__raw_writel(alchemy_gpic_pmdata[4], base + AU1300_GPIC_DMASEL);
wmb();
/* finally restore masks */
__raw_writel(alchemy_gpic_pmdata[0], base + AU1300_GPIC_IEN + 0x0);
__raw_writel(alchemy_gpic_pmdata[1], base + AU1300_GPIC_IEN + 0x4);
__raw_writel(alchemy_gpic_pmdata[2], base + AU1300_GPIC_IEN + 0x8);
__raw_writel(alchemy_gpic_pmdata[3], base + AU1300_GPIC_IEN + 0xc);
wmb();
}
static struct syscore_ops alchemy_ic_pmops = {
.suspend = alchemy_ic_suspend,
.resume = alchemy_ic_resume,
};
static struct syscore_ops alchemy_gpic_pmops = {
.suspend = alchemy_gpic_suspend,
.resume = alchemy_gpic_resume,
};
/******************************************************************************/
/* create chained handlers for the 4 IC requests to the MIPS IRQ ctrl */
#define DISP(name, base, addr) \
static void au1000_##name##_dispatch(struct irq_desc *d) \
{ \
unsigned long r = __raw_readl((void __iomem *)KSEG1ADDR(addr)); \
if (likely(r)) \
generic_handle_irq(base + __ffs(r)); \
else \
spurious_interrupt(); \
}
DISP(ic0r0, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ0INT)
DISP(ic0r1, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ1INT)
DISP(ic1r0, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ0INT)
DISP(ic1r1, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ1INT)
static void alchemy_gpic_dispatch(struct irq_desc *d)
{
int i = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_PRIENC);
generic_handle_irq(ALCHEMY_GPIC_INT_BASE + i);
}
/******************************************************************************/
static void __init au1000_init_irq(struct alchemy_irqmap *map)
{
unsigned int bit, irq_nr;
void __iomem *base;
ic_init((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR));
ic_init((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR));
register_syscore_ops(&alchemy_ic_pmops);
mips_cpu_irq_init();
/* register all 64 possible IC0+IC1 irq sources as type "none".
* Use set_irq_type() to set edge/level behaviour at runtime.
*/
for (irq_nr = AU1000_INTC0_INT_BASE;
(irq_nr < AU1000_INTC0_INT_BASE + 32); irq_nr++)
au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);
for (irq_nr = AU1000_INTC1_INT_BASE;
(irq_nr < AU1000_INTC1_INT_BASE + 32); irq_nr++)
au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);
/*
* Initialize IC0, which is fixed per processor.
*/
while (map->irq != -1) {
irq_nr = map->irq;
if (irq_nr >= AU1000_INTC1_INT_BASE) {
bit = irq_nr - AU1000_INTC1_INT_BASE;
base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
} else {
bit = irq_nr - AU1000_INTC0_INT_BASE;
base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
}
if (map->prio == 0)
__raw_writel(1 << bit, base + IC_ASSIGNSET);
au1x_ic_settype(irq_get_irq_data(irq_nr), map->type);
++map;
}
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, au1000_ic0r0_dispatch);
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, au1000_ic0r1_dispatch);
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, au1000_ic1r0_dispatch);
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, au1000_ic1r1_dispatch);
}
static void __init alchemy_gpic_init_irq(const struct alchemy_irqmap *dints)
{
int i;
void __iomem *bank_base;
register_syscore_ops(&alchemy_gpic_pmops);
mips_cpu_irq_init();
/* disable & ack all possible interrupt sources */
for (i = 0; i < 4; i++) {
bank_base = AU1300_GPIC_ADDR + (i * 4);
__raw_writel(~0UL, bank_base + AU1300_GPIC_IDIS);
wmb();
__raw_writel(~0UL, bank_base + AU1300_GPIC_IPEND);
wmb();
}
/* register an irq_chip for them, with 2nd highest priority */
for (i = ALCHEMY_GPIC_INT_BASE; i <= ALCHEMY_GPIC_INT_LAST; i++) {
au1300_set_irq_priority(i, 1);
au1300_gpic_settype(irq_get_irq_data(i), IRQ_TYPE_NONE);
}
/* setup known on-chip sources */
while ((i = dints->irq) != -1) {
au1300_gpic_settype(irq_get_irq_data(i), dints->type);
au1300_set_irq_priority(i, dints->prio);
if (dints->internal)
au1300_pinfunc_to_dev(i - ALCHEMY_GPIC_INT_BASE);
dints++;
}
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, alchemy_gpic_dispatch);
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, alchemy_gpic_dispatch);
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, alchemy_gpic_dispatch);
irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, alchemy_gpic_dispatch);
}
/******************************************************************************/
void __init arch_init_irq(void)
{
switch (alchemy_get_cputype()) {
case ALCHEMY_CPU_AU1000:
au1000_init_irq(au1000_irqmap);
break;
case ALCHEMY_CPU_AU1500:
au1000_init_irq(au1500_irqmap);
break;
case ALCHEMY_CPU_AU1100:
au1000_init_irq(au1100_irqmap);
break;
case ALCHEMY_CPU_AU1550:
au1000_init_irq(au1550_irqmap);
break;
case ALCHEMY_CPU_AU1200:
au1000_init_irq(au1200_irqmap);
break;
case ALCHEMY_CPU_AU1300:
alchemy_gpic_init_irq(au1300_irqmap);
break;
default:
pr_err("unknown Alchemy IRQ core\n");
break;
}
}
asmlinkage void plat_irq_dispatch(void)
{
unsigned long r = (read_c0_status() & read_c0_cause()) >> 8;
do_IRQ(MIPS_CPU_IRQ_BASE + __ffs(r & 0xff));
}
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