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 */ 69struct 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 76static int au1x_ic_settype(struct irq_data *d, unsigned int type); 77static 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 */ 86struct 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 121struct 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 154struct 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 189struct 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 221struct 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 248static 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 288static 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 298static 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 308static 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 318static 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 328static 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 342static 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 356static 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 368static 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 380static 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 */ 407static 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 416static 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 426static 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 */ 512static 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 */ 536void au1300_pinfunc_to_gpio(enum au1300_multifunc_pins gpio) 537{ 538 au1300_gpio_direction_input(gpio + AU1300_GPIO_BASE); 539} 540EXPORT_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 */ 549void 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} 559EXPORT_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 */ 566void 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} 571EXPORT_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 */ 581void 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 594static 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 600static 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 614static 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 629static 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 644static 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 656static 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 665static 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 715static 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 731static unsigned long alchemy_gpic_pmdata[ALCHEMY_GPIC_INT_NUM + 6]; 732 733static 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 745static 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 761static 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 770static 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 778static 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 809static 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 840static struct syscore_ops alchemy_ic_pmops = { 841 .suspend = alchemy_ic_suspend, 842 .resume = alchemy_ic_resume, 843}; 844 845static 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) \ 854static 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 863DISP(ic0r0, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ0INT) 864DISP(ic0r1, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ1INT) 865DISP(ic1r0, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ0INT) 866DISP(ic1r1, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ1INT) 867 868static 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 876static 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 923static 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 965void __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 992asmlinkage 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} 997