arch/mips/alchemy/common/irq.c

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This source file includes following definitions.
au1x_ic0_unmask
au1x_ic1_unmask
au1x_ic0_mask
au1x_ic1_mask
au1x_ic0_ack
au1x_ic1_ack
au1x_ic0_maskack
au1x_ic1_maskack
au1x_ic1_setwake
au1x_ic_settype
au1300_gpic_chgcfg
au1300_pinfunc_to_gpio
au1300_pinfunc_to_dev
au1300_set_irq_priority
au1300_set_dbdma_gpio
gpic_pin_set_idlewake
au1300_gpic_mask
au1300_gpic_unmask
au1300_gpic_maskack
au1300_gpic_ack
au1300_gpic_settype
ic_init
alchemy_ic_suspend_one
alchemy_ic_resume_one
alchemy_ic_suspend
alchemy_ic_resume
alchemy_gpic_suspend
alchemy_gpic_resume
DISP
au1000_init_irq
alchemy_gpic_init_irq
arch_init_irq
plat_irq_dispatch
   1 /*
   2  * Copyright 2001, 2007-2008 MontaVista Software Inc.
   3  * Author: MontaVista Software, Inc. <source@mvista.com>
   4  *
   5  * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
   6  *
   7  *  This program is free software; you can redistribute  it and/or modify it
   8  *  under  the terms of  the GNU General  Public License as published by the
   9  *  Free Software Foundation;  either version 2 of the  License, or (at your
  10  *  option) any later version.
  11  *
  12  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  13  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  14  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  15  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  16  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  17  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  18  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  19  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  20  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  21  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  22  *
  23  *  You should have received a copy of the  GNU General Public License along
  24  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  25  *  675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27 
  28 #include <linux/export.h>
  29 #include <linux/init.h>
  30 #include <linux/interrupt.h>
  31 #include <linux/slab.h>
  32 #include <linux/syscore_ops.h>
  33 
  34 #include <asm/irq_cpu.h>
  35 #include <asm/mach-au1x00/au1000.h>
  36 #include <asm/mach-au1x00/gpio-au1300.h>
  37 
  38 /* Interrupt Controller register offsets */
  39 #define IC_CFG0RD       0x40
  40 #define IC_CFG0SET      0x40
  41 #define IC_CFG0CLR      0x44
  42 #define IC_CFG1RD       0x48
  43 #define IC_CFG1SET      0x48
  44 #define IC_CFG1CLR      0x4C
  45 #define IC_CFG2RD       0x50
  46 #define IC_CFG2SET      0x50
  47 #define IC_CFG2CLR      0x54
  48 #define IC_REQ0INT      0x54
  49 #define IC_SRCRD        0x58
  50 #define IC_SRCSET       0x58
  51 #define IC_SRCCLR       0x5C
  52 #define IC_REQ1INT      0x5C
  53 #define IC_ASSIGNRD     0x60
  54 #define IC_ASSIGNSET    0x60
  55 #define IC_ASSIGNCLR    0x64
  56 #define IC_WAKERD       0x68
  57 #define IC_WAKESET      0x68
  58 #define IC_WAKECLR      0x6C
  59 #define IC_MASKRD       0x70
  60 #define IC_MASKSET      0x70
  61 #define IC_MASKCLR      0x74
  62 #define IC_RISINGRD     0x78
  63 #define IC_RISINGCLR    0x78
  64 #define IC_FALLINGRD    0x7C
  65 #define IC_FALLINGCLR   0x7C
  66 #define IC_TESTBIT      0x80
  67 
  68 /* per-processor fixed function irqs */
  69 struct alchemy_irqmap {
  70         int irq;        /* linux IRQ number */
  71         int type;       /* IRQ_TYPE_ */
  72         int prio;       /* irq priority, 0 highest, 3 lowest */
  73         int internal;   /* GPIC: internal source (no ext. pin)? */
  74 };
  75 
  76 static int au1x_ic_settype(struct irq_data *d, unsigned int type);
  77 static int au1300_gpic_settype(struct irq_data *d, unsigned int type);
  78 
  79 
  80 /* NOTE on interrupt priorities: The original writers of this code said:
  81  *
  82  * Because of the tight timing of SETUP token to reply transactions,
  83  * the USB devices-side packet complete interrupt (USB_DEV_REQ_INT)
  84  * needs the highest priority.
  85  */
  86 struct alchemy_irqmap au1000_irqmap[] __initdata = {
  87         { AU1000_UART0_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  88         { AU1000_UART1_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  89         { AU1000_UART2_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  90         { AU1000_UART3_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  91         { AU1000_SSI0_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  92         { AU1000_SSI1_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  93         { AU1000_DMA_INT_BASE,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  94         { AU1000_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  95         { AU1000_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  96         { AU1000_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  97         { AU1000_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  98         { AU1000_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
  99         { AU1000_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 100         { AU1000_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 101         { AU1000_TOY_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 102         { AU1000_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 103         { AU1000_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 104         { AU1000_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 105         { AU1000_RTC_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 106         { AU1000_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 107         { AU1000_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 108         { AU1000_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
 109         { AU1000_IRDA_TX_INT,     IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 110         { AU1000_IRDA_RX_INT,     IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 111         { AU1000_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,  0, 0 },
 112         { AU1000_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
 113         { AU1000_USB_HOST_INT,    IRQ_TYPE_LEVEL_LOW,   1, 0 },
 114         { AU1000_ACSYNC_INT,      IRQ_TYPE_EDGE_RISING, 1, 0 },
 115         { AU1000_MAC0_DMA_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 116         { AU1000_MAC1_DMA_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 117         { AU1000_AC97C_INT,       IRQ_TYPE_EDGE_RISING, 1, 0 },
 118         { -1, },
 119 };
 120 
 121 struct alchemy_irqmap au1500_irqmap[] __initdata = {
 122         { AU1500_UART0_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 123         { AU1500_PCI_INTA,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 124         { AU1500_PCI_INTB,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 125         { AU1500_UART3_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 126         { AU1500_PCI_INTC,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 127         { AU1500_PCI_INTD,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 128         { AU1500_DMA_INT_BASE,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 129         { AU1500_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 130         { AU1500_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 131         { AU1500_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 132         { AU1500_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 133         { AU1500_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 134         { AU1500_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 135         { AU1500_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 136         { AU1500_TOY_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 137         { AU1500_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 138         { AU1500_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 139         { AU1500_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 140         { AU1500_RTC_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 141         { AU1500_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 142         { AU1500_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 143         { AU1500_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
 144         { AU1500_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,  0, 0 },
 145         { AU1500_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
 146         { AU1500_USB_HOST_INT,    IRQ_TYPE_LEVEL_LOW,   1, 0 },
 147         { AU1500_ACSYNC_INT,      IRQ_TYPE_EDGE_RISING, 1, 0 },
 148         { AU1500_MAC0_DMA_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 149         { AU1500_MAC1_DMA_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 150         { AU1500_AC97C_INT,       IRQ_TYPE_EDGE_RISING, 1, 0 },
 151         { -1, },
 152 };
 153 
 154 struct alchemy_irqmap au1100_irqmap[] __initdata = {
 155         { AU1100_UART0_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 156         { AU1100_UART1_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 157         { AU1100_SD_INT,          IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 158         { AU1100_UART3_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 159         { AU1100_SSI0_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 160         { AU1100_SSI1_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 161         { AU1100_DMA_INT_BASE,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 162         { AU1100_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 163         { AU1100_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 164         { AU1100_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 165         { AU1100_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 166         { AU1100_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 167         { AU1100_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 168         { AU1100_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 169         { AU1100_TOY_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 170         { AU1100_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 171         { AU1100_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 172         { AU1100_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 173         { AU1100_RTC_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 174         { AU1100_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 175         { AU1100_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 176         { AU1100_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
 177         { AU1100_IRDA_TX_INT,     IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 178         { AU1100_IRDA_RX_INT,     IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 179         { AU1100_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,  0, 0 },
 180         { AU1100_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
 181         { AU1100_USB_HOST_INT,    IRQ_TYPE_LEVEL_LOW,   1, 0 },
 182         { AU1100_ACSYNC_INT,      IRQ_TYPE_EDGE_RISING, 1, 0 },
 183         { AU1100_MAC0_DMA_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 184         { AU1100_LCD_INT,         IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 185         { AU1100_AC97C_INT,       IRQ_TYPE_EDGE_RISING, 1, 0 },
 186         { -1, },
 187 };
 188 
 189 struct alchemy_irqmap au1550_irqmap[] __initdata = {
 190         { AU1550_UART0_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 191         { AU1550_PCI_INTA,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 192         { AU1550_PCI_INTB,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 193         { AU1550_DDMA_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 194         { AU1550_CRYPTO_INT,      IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 195         { AU1550_PCI_INTC,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 196         { AU1550_PCI_INTD,        IRQ_TYPE_LEVEL_LOW,   1, 0 },
 197         { AU1550_PCI_RST_INT,     IRQ_TYPE_LEVEL_LOW,   1, 0 },
 198         { AU1550_UART1_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 199         { AU1550_UART3_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 200         { AU1550_PSC0_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 201         { AU1550_PSC1_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 202         { AU1550_PSC2_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 203         { AU1550_PSC3_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 204         { AU1550_TOY_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 205         { AU1550_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 206         { AU1550_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 207         { AU1550_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 208         { AU1550_RTC_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 209         { AU1550_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 210         { AU1550_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 211         { AU1550_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
 212         { AU1550_NAND_INT,        IRQ_TYPE_EDGE_RISING, 1, 0 },
 213         { AU1550_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,  0, 0 },
 214         { AU1550_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
 215         { AU1550_USB_HOST_INT,    IRQ_TYPE_LEVEL_LOW,   1, 0 },
 216         { AU1550_MAC0_DMA_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 217         { AU1550_MAC1_DMA_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 218         { -1, },
 219 };
 220 
 221 struct alchemy_irqmap au1200_irqmap[] __initdata = {
 222         { AU1200_UART0_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 223         { AU1200_SWT_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 224         { AU1200_SD_INT,          IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 225         { AU1200_DDMA_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 226         { AU1200_MAE_BE_INT,      IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 227         { AU1200_UART1_INT,       IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 228         { AU1200_MAE_FE_INT,      IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 229         { AU1200_PSC0_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 230         { AU1200_PSC1_INT,        IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 231         { AU1200_AES_INT,         IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 232         { AU1200_CAMERA_INT,      IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 233         { AU1200_TOY_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 234         { AU1200_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 235         { AU1200_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 236         { AU1200_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 237         { AU1200_RTC_INT,         IRQ_TYPE_EDGE_RISING, 1, 0 },
 238         { AU1200_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 239         { AU1200_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
 240         { AU1200_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
 241         { AU1200_NAND_INT,        IRQ_TYPE_EDGE_RISING, 1, 0 },
 242         { AU1200_USB_INT,         IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 243         { AU1200_LCD_INT,         IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 244         { AU1200_MAE_BOTH_INT,    IRQ_TYPE_LEVEL_HIGH,  1, 0 },
 245         { -1, },
 246 };
 247 
 248 static struct alchemy_irqmap au1300_irqmap[] __initdata = {
 249         /* multifunction: gpio pin or device */
 250         { AU1300_UART1_INT,      IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 251         { AU1300_UART2_INT,      IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 252         { AU1300_UART3_INT,      IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 253         { AU1300_SD1_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 254         { AU1300_SD2_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 255         { AU1300_PSC0_INT,       IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 256         { AU1300_PSC1_INT,       IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 257         { AU1300_PSC2_INT,       IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 258         { AU1300_PSC3_INT,       IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 259         { AU1300_NAND_INT,       IRQ_TYPE_LEVEL_HIGH,   1, 0, },
 260         /* au1300 internal */
 261         { AU1300_DDMA_INT,       IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 262         { AU1300_MMU_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 263         { AU1300_MPU_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 264         { AU1300_GPU_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 265         { AU1300_UDMA_INT,       IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 266         { AU1300_TOY_INT,        IRQ_TYPE_EDGE_RISING,  1, 1, },
 267         { AU1300_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING,  1, 1, },
 268         { AU1300_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING,  1, 1, },
 269         { AU1300_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING,  1, 1, },
 270         { AU1300_RTC_INT,        IRQ_TYPE_EDGE_RISING,  1, 1, },
 271         { AU1300_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING,  1, 1, },
 272         { AU1300_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING,  1, 1, },
 273         { AU1300_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING,  0, 1, },
 274         { AU1300_UART0_INT,      IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 275         { AU1300_SD0_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 276         { AU1300_USB_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 277         { AU1300_LCD_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 278         { AU1300_BSA_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 279         { AU1300_MPE_INT,        IRQ_TYPE_EDGE_RISING,  1, 1, },
 280         { AU1300_ITE_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 281         { AU1300_AES_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 282         { AU1300_CIM_INT,        IRQ_TYPE_LEVEL_HIGH,   1, 1, },
 283         { -1, },        /* terminator */
 284 };
 285 
 286 /******************************************************************************/
 287 
 288 static void au1x_ic0_unmask(struct irq_data *d)
 289 {
 290         unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
 291         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
 292 
 293         __raw_writel(1 << bit, base + IC_MASKSET);
 294         __raw_writel(1 << bit, base + IC_WAKESET);
 295         wmb();
 296 }
 297 
 298 static void au1x_ic1_unmask(struct irq_data *d)
 299 {
 300         unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
 301         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
 302 
 303         __raw_writel(1 << bit, base + IC_MASKSET);
 304         __raw_writel(1 << bit, base + IC_WAKESET);
 305         wmb();
 306 }
 307 
 308 static void au1x_ic0_mask(struct irq_data *d)
 309 {
 310         unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
 311         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
 312 
 313         __raw_writel(1 << bit, base + IC_MASKCLR);
 314         __raw_writel(1 << bit, base + IC_WAKECLR);
 315         wmb();
 316 }
 317 
 318 static void au1x_ic1_mask(struct irq_data *d)
 319 {
 320         unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
 321         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
 322 
 323         __raw_writel(1 << bit, base + IC_MASKCLR);
 324         __raw_writel(1 << bit, base + IC_WAKECLR);
 325         wmb();
 326 }
 327 
 328 static void au1x_ic0_ack(struct irq_data *d)
 329 {
 330         unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
 331         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
 332 
 333         /*
 334          * This may assume that we don't get interrupts from
 335          * both edges at once, or if we do, that we don't care.
 336          */
 337         __raw_writel(1 << bit, base + IC_FALLINGCLR);
 338         __raw_writel(1 << bit, base + IC_RISINGCLR);
 339         wmb();
 340 }
 341 
 342 static void au1x_ic1_ack(struct irq_data *d)
 343 {
 344         unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
 345         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
 346 
 347         /*
 348          * This may assume that we don't get interrupts from
 349          * both edges at once, or if we do, that we don't care.
 350          */
 351         __raw_writel(1 << bit, base + IC_FALLINGCLR);
 352         __raw_writel(1 << bit, base + IC_RISINGCLR);
 353         wmb();
 354 }
 355 
 356 static void au1x_ic0_maskack(struct irq_data *d)
 357 {
 358         unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
 359         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
 360 
 361         __raw_writel(1 << bit, base + IC_WAKECLR);
 362         __raw_writel(1 << bit, base + IC_MASKCLR);
 363         __raw_writel(1 << bit, base + IC_RISINGCLR);
 364         __raw_writel(1 << bit, base + IC_FALLINGCLR);
 365         wmb();
 366 }
 367 
 368 static void au1x_ic1_maskack(struct irq_data *d)
 369 {
 370         unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
 371         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
 372 
 373         __raw_writel(1 << bit, base + IC_WAKECLR);
 374         __raw_writel(1 << bit, base + IC_MASKCLR);
 375         __raw_writel(1 << bit, base + IC_RISINGCLR);
 376         __raw_writel(1 << bit, base + IC_FALLINGCLR);
 377         wmb();
 378 }
 379 
 380 static int au1x_ic1_setwake(struct irq_data *d, unsigned int on)
 381 {
 382         int bit = d->irq - AU1000_INTC1_INT_BASE;
 383         unsigned long wakemsk, flags;
 384 
 385         /* only GPIO 0-7 can act as wakeup source.  Fortunately these
 386          * are wired up identically on all supported variants.
 387          */
 388         if ((bit < 0) || (bit > 7))
 389                 return -EINVAL;
 390 
 391         local_irq_save(flags);
 392         wakemsk = alchemy_rdsys(AU1000_SYS_WAKEMSK);
 393         if (on)
 394                 wakemsk |= 1 << bit;
 395         else
 396                 wakemsk &= ~(1 << bit);
 397         alchemy_wrsys(wakemsk, AU1000_SYS_WAKEMSK);
 398         local_irq_restore(flags);
 399 
 400         return 0;
 401 }
 402 
 403 /*
 404  * irq_chips for both ICs; this way the mask handlers can be
 405  * as short as possible.
 406  */
 407 static struct irq_chip au1x_ic0_chip = {
 408         .name           = "Alchemy-IC0",
 409         .irq_ack        = au1x_ic0_ack,
 410         .irq_mask       = au1x_ic0_mask,
 411         .irq_mask_ack   = au1x_ic0_maskack,
 412         .irq_unmask     = au1x_ic0_unmask,
 413         .irq_set_type   = au1x_ic_settype,
 414 };
 415 
 416 static struct irq_chip au1x_ic1_chip = {
 417         .name           = "Alchemy-IC1",
 418         .irq_ack        = au1x_ic1_ack,
 419         .irq_mask       = au1x_ic1_mask,
 420         .irq_mask_ack   = au1x_ic1_maskack,
 421         .irq_unmask     = au1x_ic1_unmask,
 422         .irq_set_type   = au1x_ic_settype,
 423         .irq_set_wake   = au1x_ic1_setwake,
 424 };
 425 
 426 static int au1x_ic_settype(struct irq_data *d, unsigned int flow_type)
 427 {
 428         struct irq_chip *chip;
 429         unsigned int bit, irq = d->irq;
 430         irq_flow_handler_t handler = NULL;
 431         unsigned char *name = NULL;
 432         void __iomem *base;
 433         int ret;
 434 
 435         if (irq >= AU1000_INTC1_INT_BASE) {
 436                 bit = irq - AU1000_INTC1_INT_BASE;
 437                 chip = &au1x_ic1_chip;
 438                 base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
 439         } else {
 440                 bit = irq - AU1000_INTC0_INT_BASE;
 441                 chip = &au1x_ic0_chip;
 442                 base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
 443         }
 444 
 445         if (bit > 31)
 446                 return -EINVAL;
 447 
 448         ret = 0;
 449 
 450         switch (flow_type) {    /* cfgregs 2:1:0 */
 451         case IRQ_TYPE_EDGE_RISING:      /* 0:0:1 */
 452                 __raw_writel(1 << bit, base + IC_CFG2CLR);
 453                 __raw_writel(1 << bit, base + IC_CFG1CLR);
 454                 __raw_writel(1 << bit, base + IC_CFG0SET);
 455                 handler = handle_edge_irq;
 456                 name = "riseedge";
 457                 break;
 458         case IRQ_TYPE_EDGE_FALLING:     /* 0:1:0 */
 459                 __raw_writel(1 << bit, base + IC_CFG2CLR);
 460                 __raw_writel(1 << bit, base + IC_CFG1SET);
 461                 __raw_writel(1 << bit, base + IC_CFG0CLR);
 462                 handler = handle_edge_irq;
 463                 name = "falledge";
 464                 break;
 465         case IRQ_TYPE_EDGE_BOTH:        /* 0:1:1 */
 466                 __raw_writel(1 << bit, base + IC_CFG2CLR);
 467                 __raw_writel(1 << bit, base + IC_CFG1SET);
 468                 __raw_writel(1 << bit, base + IC_CFG0SET);
 469                 handler = handle_edge_irq;
 470                 name = "bothedge";
 471                 break;
 472         case IRQ_TYPE_LEVEL_HIGH:       /* 1:0:1 */
 473                 __raw_writel(1 << bit, base + IC_CFG2SET);
 474                 __raw_writel(1 << bit, base + IC_CFG1CLR);
 475                 __raw_writel(1 << bit, base + IC_CFG0SET);
 476                 handler = handle_level_irq;
 477                 name = "hilevel";
 478                 break;
 479         case IRQ_TYPE_LEVEL_LOW:        /* 1:1:0 */
 480                 __raw_writel(1 << bit, base + IC_CFG2SET);
 481                 __raw_writel(1 << bit, base + IC_CFG1SET);
 482                 __raw_writel(1 << bit, base + IC_CFG0CLR);
 483                 handler = handle_level_irq;
 484                 name = "lowlevel";
 485                 break;
 486         case IRQ_TYPE_NONE:             /* 0:0:0 */
 487                 __raw_writel(1 << bit, base + IC_CFG2CLR);
 488                 __raw_writel(1 << bit, base + IC_CFG1CLR);
 489                 __raw_writel(1 << bit, base + IC_CFG0CLR);
 490                 break;
 491         default:
 492                 ret = -EINVAL;
 493         }
 494         irq_set_chip_handler_name_locked(d, chip, handler, name);
 495 
 496         wmb();
 497 
 498         return ret;
 499 }
 500 
 501 /******************************************************************************/
 502 
 503 /*
 504  * au1300_gpic_chgcfg - change PIN configuration.
 505  * @gpio:       pin to change (0-based GPIO number from datasheet).
 506  * @clr:        clear all bits set in 'clr'.
 507  * @set:        set these bits.
 508  *
 509  * modifies a pins' configuration register, bits set in @clr will
 510  * be cleared in the register, bits in @set will be set.
 511  */
 512 static inline void au1300_gpic_chgcfg(unsigned int gpio,
 513                                       unsigned long clr,
 514                                       unsigned long set)
 515 {
 516         void __iomem *r = AU1300_GPIC_ADDR;
 517         unsigned long l;
 518 
 519         r += gpio * 4;  /* offset into pin config array */
 520         l = __raw_readl(r + AU1300_GPIC_PINCFG);
 521         l &= ~clr;
 522         l |= set;
 523         __raw_writel(l, r + AU1300_GPIC_PINCFG);
 524         wmb();
 525 }
 526 
 527 /*
 528  * au1300_pinfunc_to_gpio - assign a pin as GPIO input (GPIO ctrl).
 529  * @pin:        pin (0-based GPIO number from datasheet).
 530  *
 531  * Assigns a GPIO pin to the GPIO controller, so its level can either
 532  * be read or set through the generic GPIO functions.
 533  * If you need a GPOUT, use au1300_gpio_set_value(pin, 0/1).
 534  * REVISIT: is this function really necessary?
 535  */
 536 void au1300_pinfunc_to_gpio(enum au1300_multifunc_pins gpio)
 537 {
 538         au1300_gpio_direction_input(gpio + AU1300_GPIO_BASE);
 539 }
 540 EXPORT_SYMBOL_GPL(au1300_pinfunc_to_gpio);
 541 
 542 /*
 543  * au1300_pinfunc_to_dev - assign a pin to the device function.
 544  * @pin:        pin (0-based GPIO number from datasheet).
 545  *
 546  * Assigns a GPIO pin to its associated device function; the pin will be
 547  * driven by the device and not through GPIO functions.
 548  */
 549 void au1300_pinfunc_to_dev(enum au1300_multifunc_pins gpio)
 550 {
 551         void __iomem *r = AU1300_GPIC_ADDR;
 552         unsigned long bit;
 553 
 554         r += GPIC_GPIO_BANKOFF(gpio);
 555         bit = GPIC_GPIO_TO_BIT(gpio);
 556         __raw_writel(bit, r + AU1300_GPIC_DEVSEL);
 557         wmb();
 558 }
 559 EXPORT_SYMBOL_GPL(au1300_pinfunc_to_dev);
 560 
 561 /*
 562  * au1300_set_irq_priority -  set internal priority of IRQ.
 563  * @irq:        irq to set priority (linux irq number).
 564  * @p:          priority (0 = highest, 3 = lowest).
 565  */
 566 void au1300_set_irq_priority(unsigned int irq, int p)
 567 {
 568         irq -= ALCHEMY_GPIC_INT_BASE;
 569         au1300_gpic_chgcfg(irq, GPIC_CFG_IL_MASK, GPIC_CFG_IL_SET(p));
 570 }
 571 EXPORT_SYMBOL_GPL(au1300_set_irq_priority);
 572 
 573 /*
 574  * au1300_set_dbdma_gpio - assign a gpio to one of the DBDMA triggers.
 575  * @dchan:      dbdma trigger select (0, 1).
 576  * @gpio:       pin to assign as trigger.
 577  *
 578  * DBDMA controller has 2 external trigger sources; this function
 579  * assigns a GPIO to the selected trigger.
 580  */
 581 void au1300_set_dbdma_gpio(int dchan, unsigned int gpio)
 582 {
 583         unsigned long r;
 584 
 585         if ((dchan >= 0) && (dchan <= 1)) {
 586                 r = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
 587                 r &= ~(0xff << (8 * dchan));
 588                 r |= (gpio & 0x7f) << (8 * dchan);
 589                 __raw_writel(r, AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
 590                 wmb();
 591         }
 592 }
 593 
 594 static inline void gpic_pin_set_idlewake(unsigned int gpio, int allow)
 595 {
 596         au1300_gpic_chgcfg(gpio, GPIC_CFG_IDLEWAKE,
 597                            allow ? GPIC_CFG_IDLEWAKE : 0);
 598 }
 599 
 600 static void au1300_gpic_mask(struct irq_data *d)
 601 {
 602         void __iomem *r = AU1300_GPIC_ADDR;
 603         unsigned long bit, irq = d->irq;
 604 
 605         irq -= ALCHEMY_GPIC_INT_BASE;
 606         r += GPIC_GPIO_BANKOFF(irq);
 607         bit = GPIC_GPIO_TO_BIT(irq);
 608         __raw_writel(bit, r + AU1300_GPIC_IDIS);
 609         wmb();
 610 
 611         gpic_pin_set_idlewake(irq, 0);
 612 }
 613 
 614 static void au1300_gpic_unmask(struct irq_data *d)
 615 {
 616         void __iomem *r = AU1300_GPIC_ADDR;
 617         unsigned long bit, irq = d->irq;
 618 
 619         irq -= ALCHEMY_GPIC_INT_BASE;
 620 
 621         gpic_pin_set_idlewake(irq, 1);
 622 
 623         r += GPIC_GPIO_BANKOFF(irq);
 624         bit = GPIC_GPIO_TO_BIT(irq);
 625         __raw_writel(bit, r + AU1300_GPIC_IEN);
 626         wmb();
 627 }
 628 
 629 static void au1300_gpic_maskack(struct irq_data *d)
 630 {
 631         void __iomem *r = AU1300_GPIC_ADDR;
 632         unsigned long bit, irq = d->irq;
 633 
 634         irq -= ALCHEMY_GPIC_INT_BASE;
 635         r += GPIC_GPIO_BANKOFF(irq);
 636         bit = GPIC_GPIO_TO_BIT(irq);
 637         __raw_writel(bit, r + AU1300_GPIC_IPEND);       /* ack */
 638         __raw_writel(bit, r + AU1300_GPIC_IDIS);        /* mask */
 639         wmb();
 640 
 641         gpic_pin_set_idlewake(irq, 0);
 642 }
 643 
 644 static void au1300_gpic_ack(struct irq_data *d)
 645 {
 646         void __iomem *r = AU1300_GPIC_ADDR;
 647         unsigned long bit, irq = d->irq;
 648 
 649         irq -= ALCHEMY_GPIC_INT_BASE;
 650         r += GPIC_GPIO_BANKOFF(irq);
 651         bit = GPIC_GPIO_TO_BIT(irq);
 652         __raw_writel(bit, r + AU1300_GPIC_IPEND);       /* ack */
 653         wmb();
 654 }
 655 
 656 static struct irq_chip au1300_gpic = {
 657         .name           = "GPIOINT",
 658         .irq_ack        = au1300_gpic_ack,
 659         .irq_mask       = au1300_gpic_mask,
 660         .irq_mask_ack   = au1300_gpic_maskack,
 661         .irq_unmask     = au1300_gpic_unmask,
 662         .irq_set_type   = au1300_gpic_settype,
 663 };
 664 
 665 static int au1300_gpic_settype(struct irq_data *d, unsigned int type)
 666 {
 667         unsigned long s;
 668         unsigned char *name = NULL;
 669         irq_flow_handler_t hdl = NULL;
 670 
 671         switch (type) {
 672         case IRQ_TYPE_LEVEL_HIGH:
 673                 s = GPIC_CFG_IC_LEVEL_HIGH;
 674                 name = "high";
 675                 hdl = handle_level_irq;
 676                 break;
 677         case IRQ_TYPE_LEVEL_LOW:
 678                 s = GPIC_CFG_IC_LEVEL_LOW;
 679                 name = "low";
 680                 hdl = handle_level_irq;
 681                 break;
 682         case IRQ_TYPE_EDGE_RISING:
 683                 s = GPIC_CFG_IC_EDGE_RISE;
 684                 name = "posedge";
 685                 hdl = handle_edge_irq;
 686                 break;
 687         case IRQ_TYPE_EDGE_FALLING:
 688                 s = GPIC_CFG_IC_EDGE_FALL;
 689                 name = "negedge";
 690                 hdl = handle_edge_irq;
 691                 break;
 692         case IRQ_TYPE_EDGE_BOTH:
 693                 s = GPIC_CFG_IC_EDGE_BOTH;
 694                 name = "bothedge";
 695                 hdl = handle_edge_irq;
 696                 break;
 697         case IRQ_TYPE_NONE:
 698                 s = GPIC_CFG_IC_OFF;
 699                 name = "disabled";
 700                 hdl = handle_level_irq;
 701                 break;
 702         default:
 703                 return -EINVAL;
 704         }
 705 
 706         irq_set_chip_handler_name_locked(d, &au1300_gpic, hdl, name);
 707 
 708         au1300_gpic_chgcfg(d->irq - ALCHEMY_GPIC_INT_BASE, GPIC_CFG_IC_MASK, s);
 709 
 710         return 0;
 711 }
 712 
 713 /******************************************************************************/
 714 
 715 static inline void ic_init(void __iomem *base)
 716 {
 717         /* initialize interrupt controller to a safe state */
 718         __raw_writel(0xffffffff, base + IC_CFG0CLR);
 719         __raw_writel(0xffffffff, base + IC_CFG1CLR);
 720         __raw_writel(0xffffffff, base + IC_CFG2CLR);
 721         __raw_writel(0xffffffff, base + IC_MASKCLR);
 722         __raw_writel(0xffffffff, base + IC_ASSIGNCLR);
 723         __raw_writel(0xffffffff, base + IC_WAKECLR);
 724         __raw_writel(0xffffffff, base + IC_SRCSET);
 725         __raw_writel(0xffffffff, base + IC_FALLINGCLR);
 726         __raw_writel(0xffffffff, base + IC_RISINGCLR);
 727         __raw_writel(0x00000000, base + IC_TESTBIT);
 728         wmb();
 729 }
 730 
 731 static unsigned long alchemy_gpic_pmdata[ALCHEMY_GPIC_INT_NUM + 6];
 732 
 733 static inline void alchemy_ic_suspend_one(void __iomem *base, unsigned long *d)
 734 {
 735         d[0] = __raw_readl(base + IC_CFG0RD);
 736         d[1] = __raw_readl(base + IC_CFG1RD);
 737         d[2] = __raw_readl(base + IC_CFG2RD);
 738         d[3] = __raw_readl(base + IC_SRCRD);
 739         d[4] = __raw_readl(base + IC_ASSIGNRD);
 740         d[5] = __raw_readl(base + IC_WAKERD);
 741         d[6] = __raw_readl(base + IC_MASKRD);
 742         ic_init(base);          /* shut it up too while at it */
 743 }
 744 
 745 static inline void alchemy_ic_resume_one(void __iomem *base, unsigned long *d)
 746 {
 747         ic_init(base);
 748 
 749         __raw_writel(d[0], base + IC_CFG0SET);
 750         __raw_writel(d[1], base + IC_CFG1SET);
 751         __raw_writel(d[2], base + IC_CFG2SET);
 752         __raw_writel(d[3], base + IC_SRCSET);
 753         __raw_writel(d[4], base + IC_ASSIGNSET);
 754         __raw_writel(d[5], base + IC_WAKESET);
 755         wmb();
 756 
 757         __raw_writel(d[6], base + IC_MASKSET);
 758         wmb();
 759 }
 760 
 761 static int alchemy_ic_suspend(void)
 762 {
 763         alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
 764                                alchemy_gpic_pmdata);
 765         alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
 766                                &alchemy_gpic_pmdata[7]);
 767         return 0;
 768 }
 769 
 770 static void alchemy_ic_resume(void)
 771 {
 772         alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
 773                               &alchemy_gpic_pmdata[7]);
 774         alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
 775                               alchemy_gpic_pmdata);
 776 }
 777 
 778 static int alchemy_gpic_suspend(void)
 779 {
 780         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
 781         int i;
 782 
 783         /* save 4 interrupt mask status registers */
 784         alchemy_gpic_pmdata[0] = __raw_readl(base + AU1300_GPIC_IEN + 0x0);
 785         alchemy_gpic_pmdata[1] = __raw_readl(base + AU1300_GPIC_IEN + 0x4);
 786         alchemy_gpic_pmdata[2] = __raw_readl(base + AU1300_GPIC_IEN + 0x8);
 787         alchemy_gpic_pmdata[3] = __raw_readl(base + AU1300_GPIC_IEN + 0xc);
 788 
 789         /* save misc register(s) */
 790         alchemy_gpic_pmdata[4] = __raw_readl(base + AU1300_GPIC_DMASEL);
 791 
 792         /* molto silenzioso */
 793         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
 794         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
 795         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
 796         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
 797         wmb();
 798 
 799         /* save pin/int-type configuration */
 800         base += AU1300_GPIC_PINCFG;
 801         for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
 802                 alchemy_gpic_pmdata[i + 5] = __raw_readl(base + (i << 2));
 803 
 804         wmb();
 805 
 806         return 0;
 807 }
 808 
 809 static void alchemy_gpic_resume(void)
 810 {
 811         void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
 812         int i;
 813 
 814         /* disable all first */
 815         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
 816         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
 817         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
 818         __raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
 819         wmb();
 820 
 821         /* restore pin/int-type configurations */
 822         base += AU1300_GPIC_PINCFG;
 823         for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
 824                 __raw_writel(alchemy_gpic_pmdata[i + 5], base + (i << 2));
 825         wmb();
 826 
 827         /* restore misc register(s) */
 828         base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
 829         __raw_writel(alchemy_gpic_pmdata[4], base + AU1300_GPIC_DMASEL);
 830         wmb();
 831 
 832         /* finally restore masks */
 833         __raw_writel(alchemy_gpic_pmdata[0], base + AU1300_GPIC_IEN + 0x0);
 834         __raw_writel(alchemy_gpic_pmdata[1], base + AU1300_GPIC_IEN + 0x4);
 835         __raw_writel(alchemy_gpic_pmdata[2], base + AU1300_GPIC_IEN + 0x8);
 836         __raw_writel(alchemy_gpic_pmdata[3], base + AU1300_GPIC_IEN + 0xc);
 837         wmb();
 838 }
 839 
 840 static struct syscore_ops alchemy_ic_pmops = {
 841         .suspend        = alchemy_ic_suspend,
 842         .resume         = alchemy_ic_resume,
 843 };
 844 
 845 static struct syscore_ops alchemy_gpic_pmops = {
 846         .suspend        = alchemy_gpic_suspend,
 847         .resume         = alchemy_gpic_resume,
 848 };
 849 
 850 /******************************************************************************/
 851 
 852 /* create chained handlers for the 4 IC requests to the MIPS IRQ ctrl */
 853 #define DISP(name, base, addr)                                                \
 854 static void au1000_##name##_dispatch(struct irq_desc *d)                      \
 855 {                                                                             \
 856         unsigned long r = __raw_readl((void __iomem *)KSEG1ADDR(addr));       \
 857         if (likely(r))                                                        \
 858                 generic_handle_irq(base + __ffs(r));                          \
 859         else                                                                  \
 860                 spurious_interrupt();                                         \
 861 }
 862 
 863 DISP(ic0r0, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ0INT)
 864 DISP(ic0r1, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ1INT)
 865 DISP(ic1r0, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ0INT)
 866 DISP(ic1r1, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ1INT)
 867 
 868 static void alchemy_gpic_dispatch(struct irq_desc *d)
 869 {
 870         int i = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_PRIENC);
 871         generic_handle_irq(ALCHEMY_GPIC_INT_BASE + i);
 872 }
 873 
 874 /******************************************************************************/
 875 
 876 static void __init au1000_init_irq(struct alchemy_irqmap *map)
 877 {
 878         unsigned int bit, irq_nr;
 879         void __iomem *base;
 880 
 881         ic_init((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR));
 882         ic_init((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR));
 883         register_syscore_ops(&alchemy_ic_pmops);
 884         mips_cpu_irq_init();
 885 
 886         /* register all 64 possible IC0+IC1 irq sources as type "none".
 887          * Use set_irq_type() to set edge/level behaviour at runtime.
 888          */
 889         for (irq_nr = AU1000_INTC0_INT_BASE;
 890              (irq_nr < AU1000_INTC0_INT_BASE + 32); irq_nr++)
 891                 au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);
 892 
 893         for (irq_nr = AU1000_INTC1_INT_BASE;
 894              (irq_nr < AU1000_INTC1_INT_BASE + 32); irq_nr++)
 895                 au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);
 896 
 897         /*
 898          * Initialize IC0, which is fixed per processor.
 899          */
 900         while (map->irq != -1) {
 901                 irq_nr = map->irq;
 902 
 903                 if (irq_nr >= AU1000_INTC1_INT_BASE) {
 904                         bit = irq_nr - AU1000_INTC1_INT_BASE;
 905                         base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
 906                 } else {
 907                         bit = irq_nr - AU1000_INTC0_INT_BASE;
 908                         base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
 909                 }
 910                 if (map->prio == 0)
 911                         __raw_writel(1 << bit, base + IC_ASSIGNSET);
 912 
 913                 au1x_ic_settype(irq_get_irq_data(irq_nr), map->type);
 914                 ++map;
 915         }
 916 
 917         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, au1000_ic0r0_dispatch);
 918         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, au1000_ic0r1_dispatch);
 919         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, au1000_ic1r0_dispatch);
 920         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, au1000_ic1r1_dispatch);
 921 }
 922 
 923 static void __init alchemy_gpic_init_irq(const struct alchemy_irqmap *dints)
 924 {
 925         int i;
 926         void __iomem *bank_base;
 927 
 928         register_syscore_ops(&alchemy_gpic_pmops);
 929         mips_cpu_irq_init();
 930 
 931         /* disable & ack all possible interrupt sources */
 932         for (i = 0; i < 4; i++) {
 933                 bank_base = AU1300_GPIC_ADDR + (i * 4);
 934                 __raw_writel(~0UL, bank_base + AU1300_GPIC_IDIS);
 935                 wmb();
 936                 __raw_writel(~0UL, bank_base + AU1300_GPIC_IPEND);
 937                 wmb();
 938         }
 939 
 940         /* register an irq_chip for them, with 2nd highest priority */
 941         for (i = ALCHEMY_GPIC_INT_BASE; i <= ALCHEMY_GPIC_INT_LAST; i++) {
 942                 au1300_set_irq_priority(i, 1);
 943                 au1300_gpic_settype(irq_get_irq_data(i), IRQ_TYPE_NONE);
 944         }
 945 
 946         /* setup known on-chip sources */
 947         while ((i = dints->irq) != -1) {
 948                 au1300_gpic_settype(irq_get_irq_data(i), dints->type);
 949                 au1300_set_irq_priority(i, dints->prio);
 950 
 951                 if (dints->internal)
 952                         au1300_pinfunc_to_dev(i - ALCHEMY_GPIC_INT_BASE);
 953 
 954                 dints++;
 955         }
 956 
 957         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, alchemy_gpic_dispatch);
 958         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, alchemy_gpic_dispatch);
 959         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, alchemy_gpic_dispatch);
 960         irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, alchemy_gpic_dispatch);
 961 }
 962 
 963 /******************************************************************************/
 964 
 965 void __init arch_init_irq(void)
 966 {
 967         switch (alchemy_get_cputype()) {
 968         case ALCHEMY_CPU_AU1000:
 969                 au1000_init_irq(au1000_irqmap);
 970                 break;
 971         case ALCHEMY_CPU_AU1500:
 972                 au1000_init_irq(au1500_irqmap);
 973                 break;
 974         case ALCHEMY_CPU_AU1100:
 975                 au1000_init_irq(au1100_irqmap);
 976                 break;
 977         case ALCHEMY_CPU_AU1550:
 978                 au1000_init_irq(au1550_irqmap);
 979                 break;
 980         case ALCHEMY_CPU_AU1200:
 981                 au1000_init_irq(au1200_irqmap);
 982                 break;
 983         case ALCHEMY_CPU_AU1300:
 984                 alchemy_gpic_init_irq(au1300_irqmap);
 985                 break;
 986         default:
 987                 pr_err("unknown Alchemy IRQ core\n");
 988                 break;
 989         }
 990 }
 991 
 992 asmlinkage void plat_irq_dispatch(void)
 993 {
 994         unsigned long r = (read_c0_status() & read_c0_cause()) >> 8;
 995         do_IRQ(MIPS_CPU_IRQ_BASE + __ffs(r & 0xff));
 996 }
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root/arch/mips/alchemy/common/irq.c

DEFINITIONS
