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Diffstat (limited to 'arch/mips/alchemy/common/irq.c')
-rw-r--r--arch/mips/alchemy/common/irq.c997
1 files changed, 997 insertions, 0 deletions
diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c
new file mode 100644
index 00000000000..94fbcd19eb9
--- /dev/null
+++ b/arch/mips/alchemy/common/irq.c
@@ -0,0 +1,997 @@
+/*
+ * 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 = __raw_readl((void __iomem *)SYS_WAKEMSK);
+ if (on)
+ wakemsk |= 1 << bit;
+ else
+ wakemsk &= ~(1 << bit);
+ __raw_writel(wakemsk, (void __iomem *)SYS_WAKEMSK);
+ wmb();
+ 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->irq, 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->irq, &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(unsigned int irq, 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(unsigned int irq, 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));
+}