arch/arm/mach-shmobile/intc-sh73a0.c

   1 /*
   2  * sh73a0 processor support - INTC hardware block
   3  *
   4  * Copyright (C) 2010  Magnus Damm
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/module.h>
  23 #include <linux/irq.h>
  24 #include <linux/io.h>
  25 #include <linux/sh_intc.h>
  26 #include <linux/irqchip.h>
  27 #include <linux/irqchip/arm-gic.h>
  28 #include <mach/intc.h>
  29 #include <mach/irqs.h>
  30 #include <mach/sh73a0.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33
  34 enum {
  35         UNUSED = 0,
  36
  37         /* interrupt sources INTCS */
  38         PINTCS_PINT1, PINTCS_PINT2,
  39         RTDMAC_0_DEI0, RTDMAC_0_DEI1, RTDMAC_0_DEI2, RTDMAC_0_DEI3,
  40         CEU, MFI, BBIF2, VPU, TSIF1, _3DG_SGX543, _2DDMAC_2DDM0,
  41         RTDMAC_1_DEI4, RTDMAC_1_DEI5, RTDMAC_1_DADERR,
  42         KEYSC_KEY, VINT, MSIOF,
  43         TMU0_TUNI00, TMU0_TUNI01, TMU0_TUNI02,
  44         CMT0, TSIF0, CMT2, LMB, MSUG, MSU_MSU, MSU_MSU2,
  45         CTI, RWDT0, ICB, PEP, ASA, JPU_JPEG, LCDC, LCRC,
  46         RTDMAC_2_DEI6, RTDMAC_2_DEI7, RTDMAC_2_DEI8, RTDMAC_2_DEI9,
  47         RTDMAC_3_DEI10, RTDMAC_3_DEI11,
  48         FRC, GCU, LCDC1, CSIRX,
  49         DSITX0_DSITX00, DSITX0_DSITX01,
  50         SPU2_SPU0, SPU2_SPU1, FSI,
  51         TMU1_TUNI10, TMU1_TUNI11, TMU1_TUNI12,
  52         TSIF2, CMT4, MFIS2, CPORTS2R, TSG, DMASCH1, SCUW,
  53         VIO60, VIO61, CEU21, CSI21, DSITX1_DSITX10, DSITX1_DSITX11,
  54         DISP, DSRV, EMUX2_EMUX20I, EMUX2_EMUX21I,
  55         MSTIF0_MST00I, MSTIF0_MST01I, MSTIF1_MST10I, MSTIF1_MST11I,
  56         SPUV,
  57
  58         /* interrupt groups INTCS */
  59         RTDMAC_0, RTDMAC_1, RTDMAC_2, RTDMAC_3,
  60         DSITX0, SPU2, TMU1, MSU,
  61 };
  62
  63 static struct intc_vect intcs_vectors[] = {
  64         INTCS_VECT(PINTCS_PINT1, 0x0600), INTCS_VECT(PINTCS_PINT2, 0x0620),
  65         INTCS_VECT(RTDMAC_0_DEI0, 0x0800), INTCS_VECT(RTDMAC_0_DEI1, 0x0820),
  66         INTCS_VECT(RTDMAC_0_DEI2, 0x0840), INTCS_VECT(RTDMAC_0_DEI3, 0x0860),
  67         INTCS_VECT(CEU, 0x0880), INTCS_VECT(MFI, 0x0900),
  68         INTCS_VECT(BBIF2, 0x0960), INTCS_VECT(VPU, 0x0980),
  69         INTCS_VECT(TSIF1, 0x09a0), INTCS_VECT(_3DG_SGX543, 0x09e0),
  70         INTCS_VECT(_2DDMAC_2DDM0, 0x0a00),
  71         INTCS_VECT(RTDMAC_1_DEI4, 0x0b80), INTCS_VECT(RTDMAC_1_DEI5, 0x0ba0),
  72         INTCS_VECT(RTDMAC_1_DADERR, 0x0bc0),
  73         INTCS_VECT(KEYSC_KEY, 0x0be0), INTCS_VECT(VINT, 0x0c80),
  74         INTCS_VECT(MSIOF, 0x0d20),
  75         INTCS_VECT(TMU0_TUNI00, 0x0e80), INTCS_VECT(TMU0_TUNI01, 0x0ea0),
  76         INTCS_VECT(TMU0_TUNI02, 0x0ec0),
  77         INTCS_VECT(CMT0, 0x0f00), INTCS_VECT(TSIF0, 0x0f20),
  78         INTCS_VECT(CMT2, 0x0f40), INTCS_VECT(LMB, 0x0f60),
  79         INTCS_VECT(MSUG, 0x0f80),
  80         INTCS_VECT(MSU_MSU, 0x0fa0), INTCS_VECT(MSU_MSU2, 0x0fc0),
  81         INTCS_VECT(CTI, 0x0400), INTCS_VECT(RWDT0, 0x0440),
  82         INTCS_VECT(ICB, 0x0480), INTCS_VECT(PEP, 0x04a0),
  83         INTCS_VECT(ASA, 0x04c0), INTCS_VECT(JPU_JPEG, 0x0560),
  84         INTCS_VECT(LCDC, 0x0580), INTCS_VECT(LCRC, 0x05a0),
  85         INTCS_VECT(RTDMAC_2_DEI6, 0x1300), INTCS_VECT(RTDMAC_2_DEI7, 0x1320),
  86         INTCS_VECT(RTDMAC_2_DEI8, 0x1340), INTCS_VECT(RTDMAC_2_DEI9, 0x1360),
  87         INTCS_VECT(RTDMAC_3_DEI10, 0x1380), INTCS_VECT(RTDMAC_3_DEI11, 0x13a0),
  88         INTCS_VECT(FRC, 0x1700), INTCS_VECT(GCU, 0x1760),
  89         INTCS_VECT(LCDC1, 0x1780), INTCS_VECT(CSIRX, 0x17a0),
  90         INTCS_VECT(DSITX0_DSITX00, 0x17c0), INTCS_VECT(DSITX0_DSITX01, 0x17e0),
  91         INTCS_VECT(SPU2_SPU0, 0x1800), INTCS_VECT(SPU2_SPU1, 0x1820),
  92         INTCS_VECT(FSI, 0x1840),
  93         INTCS_VECT(TMU1_TUNI10, 0x1900), INTCS_VECT(TMU1_TUNI11, 0x1920),
  94         INTCS_VECT(TMU1_TUNI12, 0x1940),
  95         INTCS_VECT(TSIF2, 0x1960), INTCS_VECT(CMT4, 0x1980),
  96         INTCS_VECT(MFIS2, 0x1a00), INTCS_VECT(CPORTS2R, 0x1a20),
  97         INTCS_VECT(TSG, 0x1ae0), INTCS_VECT(DMASCH1, 0x1b00),
  98         INTCS_VECT(SCUW, 0x1b40),
  99         INTCS_VECT(VIO60, 0x1b60), INTCS_VECT(VIO61, 0x1b80),
 100         INTCS_VECT(CEU21, 0x1ba0), INTCS_VECT(CSI21, 0x1be0),
 101         INTCS_VECT(DSITX1_DSITX10, 0x1c00), INTCS_VECT(DSITX1_DSITX11, 0x1c20),
 102         INTCS_VECT(DISP, 0x1c40), INTCS_VECT(DSRV, 0x1c60),
 103         INTCS_VECT(EMUX2_EMUX20I, 0x1c80), INTCS_VECT(EMUX2_EMUX21I, 0x1ca0),
 104         INTCS_VECT(MSTIF0_MST00I, 0x1cc0), INTCS_VECT(MSTIF0_MST01I, 0x1ce0),
 105         INTCS_VECT(MSTIF1_MST10I, 0x1d00), INTCS_VECT(MSTIF1_MST11I, 0x1d20),
 106         INTCS_VECT(SPUV, 0x2300),
 107 };
 108
 109 static struct intc_group intcs_groups[] __initdata = {
 110         INTC_GROUP(RTDMAC_0, RTDMAC_0_DEI0, RTDMAC_0_DEI1,
 111                    RTDMAC_0_DEI2, RTDMAC_0_DEI3),
 112         INTC_GROUP(RTDMAC_1, RTDMAC_1_DEI4, RTDMAC_1_DEI5, RTDMAC_1_DADERR),
 113         INTC_GROUP(RTDMAC_2, RTDMAC_2_DEI6, RTDMAC_2_DEI7,
 114                    RTDMAC_2_DEI8, RTDMAC_2_DEI9),
 115         INTC_GROUP(RTDMAC_3, RTDMAC_3_DEI10, RTDMAC_3_DEI11),
 116         INTC_GROUP(TMU1, TMU1_TUNI12, TMU1_TUNI11, TMU1_TUNI10),
 117         INTC_GROUP(DSITX0, DSITX0_DSITX00, DSITX0_DSITX01),
 118         INTC_GROUP(SPU2, SPU2_SPU0, SPU2_SPU1),
 119         INTC_GROUP(MSU, MSU_MSU, MSU_MSU2),
 120 };
 121
 122 static struct intc_mask_reg intcs_mask_registers[] = {
 123         { 0xffd20184, 0xffd201c4, 8, /* IMR1SA / IMCR1SA */
 124           { 0, 0, 0, CEU,
 125             0, 0, 0, 0 } },
 126         { 0xffd20188, 0xffd201c8, 8, /* IMR2SA / IMCR2SA */
 127           { 0, 0, 0, VPU,
 128             BBIF2, 0, 0, MFI } },
 129         { 0xffd2018c, 0xffd201cc, 8, /* IMR3SA / IMCR3SA */
 130           { 0, 0, 0, _2DDMAC_2DDM0,
 131             0, ASA, PEP, ICB } },
 132         { 0xffd20190, 0xffd201d0, 8, /* IMR4SA / IMCR4SA */
 133           { 0, 0, 0, CTI,
 134             JPU_JPEG, 0, LCRC, LCDC } },
 135         { 0xffd20194, 0xffd201d4, 8, /* IMR5SA / IMCR5SA */
 136           { KEYSC_KEY, RTDMAC_1_DADERR, RTDMAC_1_DEI5, RTDMAC_1_DEI4,
 137             RTDMAC_0_DEI3, RTDMAC_0_DEI2, RTDMAC_0_DEI1, RTDMAC_0_DEI0 } },
 138         { 0xffd20198, 0xffd201d8, 8, /* IMR6SA / IMCR6SA */
 139           { 0, 0, MSIOF, 0,
 140             _3DG_SGX543, 0, 0, 0 } },
 141         { 0xffd2019c, 0xffd201dc, 8, /* IMR7SA / IMCR7SA */
 142           { 0, TMU0_TUNI02, TMU0_TUNI01, TMU0_TUNI00,
 143             0, 0, 0, 0 } },
 144         { 0xffd201a0, 0xffd201e0, 8, /* IMR8SA / IMCR8SA */
 145           { 0, 0, 0, 0,
 146             0, MSU_MSU, MSU_MSU2, MSUG } },
 147         { 0xffd201a4, 0xffd201e4, 8, /* IMR9SA / IMCR9SA */
 148           { 0, RWDT0, CMT2, CMT0,
 149             0, 0, 0, 0 } },
 150         { 0xffd201ac, 0xffd201ec, 8, /* IMR11SA / IMCR11SA */
 151           { 0, 0, 0, 0,
 152             0, TSIF1, LMB, TSIF0 } },
 153         { 0xffd201b0, 0xffd201f0, 8, /* IMR12SA / IMCR12SA */
 154           { 0, 0, 0, 0,
 155             0, 0, PINTCS_PINT2, PINTCS_PINT1 } },
 156         { 0xffd50180, 0xffd501c0, 8, /* IMR0SA3 / IMCR0SA3 */
 157           { RTDMAC_2_DEI6, RTDMAC_2_DEI7, RTDMAC_2_DEI8, RTDMAC_2_DEI9,
 158             RTDMAC_3_DEI10, RTDMAC_3_DEI11, 0, 0 } },
 159         { 0xffd50190, 0xffd501d0, 8, /* IMR4SA3 / IMCR4SA3 */
 160           { FRC, 0, 0, GCU,
 161             LCDC1, CSIRX, DSITX0_DSITX00, DSITX0_DSITX01 } },
 162         { 0xffd50194, 0xffd501d4, 8, /* IMR5SA3 / IMCR5SA3 */
 163           { SPU2_SPU0, SPU2_SPU1, FSI, 0,
 164             0, 0, 0, 0 } },
 165         { 0xffd50198, 0xffd501d8, 8, /* IMR6SA3 / IMCR6SA3 */
 166           { TMU1_TUNI10, TMU1_TUNI11, TMU1_TUNI12, 0,
 167             TSIF2, CMT4, 0, 0 } },
 168         { 0xffd5019c, 0xffd501dc, 8, /* IMR7SA3 / IMCR7SA3 */
 169           { MFIS2, CPORTS2R, 0, 0,
 170             0, 0, 0, TSG } },
 171         { 0xffd501a0, 0xffd501e0, 8, /* IMR8SA3 / IMCR8SA3 */
 172           { DMASCH1, 0, SCUW, VIO60,
 173             VIO61, CEU21, 0, CSI21 } },
 174         { 0xffd501a4, 0xffd501e4, 8, /* IMR9SA3 / IMCR9SA3 */
 175           { DSITX1_DSITX10, DSITX1_DSITX11, DISP, DSRV,
 176             EMUX2_EMUX20I, EMUX2_EMUX21I, MSTIF0_MST00I, MSTIF0_MST01I } },
 177         { 0xffd501a8, 0xffd501e8, 8, /* IMR10SA3 / IMCR10SA3 */
 178           { MSTIF0_MST00I, MSTIF0_MST01I, 0, 0,
 179             0, 0, 0, 0  } },
 180         { 0xffd60180, 0xffd601c0, 8, /* IMR0SA4 / IMCR0SA4 */
 181           { SPUV, 0, 0, 0,
 182             0, 0, 0, 0  } },
 183 };
 184
 185 /* Priority is needed for INTCA to receive the INTCS interrupt */
 186 static struct intc_prio_reg intcs_prio_registers[] = {
 187         { 0xffd20000, 0, 16, 4, /* IPRAS */ { CTI, 0, _2DDMAC_2DDM0, ICB } },
 188         { 0xffd20004, 0, 16, 4, /* IPRBS */ { JPU_JPEG, LCDC, 0, LCRC } },
 189         { 0xffd20008, 0, 16, 4, /* IPRCS */ { BBIF2, 0, 0, 0 } },
 190         { 0xffd2000c, 0, 16, 4, /* IPRDS */ { PINTCS_PINT1, PINTCS_PINT2,
 191                                               0, 0 } },
 192         { 0xffd20010, 0, 16, 4, /* IPRES */ { RTDMAC_0, CEU, MFI, VPU } },
 193         { 0xffd20014, 0, 16, 4, /* IPRFS */ { KEYSC_KEY, RTDMAC_1,
 194                                               CMT2, CMT0 } },
 195         { 0xffd20018, 0, 16, 4, /* IPRGS */ { TMU0_TUNI00, TMU0_TUNI01,
 196                                               TMU0_TUNI02, TSIF1 } },
 197         { 0xffd2001c, 0, 16, 4, /* IPRHS */ { VINT, 0, 0, 0 } },
 198         { 0xffd20020, 0, 16, 4, /* IPRIS */ { 0, MSIOF, TSIF0, 0 } },
 199         { 0xffd20024, 0, 16, 4, /* IPRJS */ { 0, _3DG_SGX543, MSUG, MSU } },
 200         { 0xffd20028, 0, 16, 4, /* IPRKS */ { 0, ASA, LMB, PEP } },
 201         { 0xffd20030, 0, 16, 4, /* IPRMS */ { 0, 0, 0, RWDT0 } },
 202         { 0xffd50000, 0, 16, 4, /* IPRAS3 */ { RTDMAC_2, 0, 0, 0 } },
 203         { 0xffd50004, 0, 16, 4, /* IPRBS3 */ { RTDMAC_3, 0, 0, 0 } },
 204         { 0xffd50020, 0, 16, 4, /* IPRIS3 */ { FRC, 0, 0, 0 } },
 205         { 0xffd50024, 0, 16, 4, /* IPRJS3 */ { LCDC1, CSIRX, DSITX0, 0 } },
 206         { 0xffd50028, 0, 16, 4, /* IPRKS3 */ { SPU2, 0, FSI, 0 } },
 207         { 0xffd50030, 0, 16, 4, /* IPRMS3 */ { TMU1, 0, 0, TSIF2 } },
 208         { 0xffd50034, 0, 16, 4, /* IPRNS3 */ { CMT4, 0, 0, 0 } },
 209         { 0xffd50038, 0, 16, 4, /* IPROS3 */ { MFIS2, CPORTS2R, 0, 0 } },
 210         { 0xffd50040, 0, 16, 4, /* IPRQS3 */ { DMASCH1, 0, SCUW, VIO60 } },
 211         { 0xffd50044, 0, 16, 4, /* IPRRS3 */ { VIO61, CEU21, 0, CSI21 } },
 212         { 0xffd50048, 0, 16, 4, /* IPRSS3 */ { DSITX1_DSITX10, DSITX1_DSITX11,
 213                                                DISP, DSRV } },
 214         { 0xffd5004c, 0, 16, 4, /* IPRTS3 */ { EMUX2_EMUX20I, EMUX2_EMUX21I,
 215                                                MSTIF0_MST00I, MSTIF0_MST01I } },
 216         { 0xffd50050, 0, 16, 4, /* IPRUS3 */ { MSTIF1_MST10I, MSTIF1_MST11I,
 217                                                0, 0 } },
 218         { 0xffd60000, 0, 16, 4, /* IPRAS4 */ { SPUV, 0, 0, 0 } },
 219 };
 220
 221 static struct resource intcs_resources[] __initdata = {
 222         [0] = {
 223                 .start  = 0xffd20000,
 224                 .end    = 0xffd201ff,
 225                 .flags  = IORESOURCE_MEM,
 226         },
 227         [1] = {
 228                 .start  = 0xffd50000,
 229                 .end    = 0xffd501ff,
 230                 .flags  = IORESOURCE_MEM,
 231         },
 232         [2] = {
 233                 .start  = 0xffd60000,
 234                 .end    = 0xffd601ff,
 235                 .flags  = IORESOURCE_MEM,
 236         }
 237 };
 238
 239 static struct intc_desc intcs_desc __initdata = {
 240         .name = "sh73a0-intcs",
 241         .resource = intcs_resources,
 242         .num_resources = ARRAY_SIZE(intcs_resources),
 243         .hw = INTC_HW_DESC(intcs_vectors, intcs_groups, intcs_mask_registers,
 244                            intcs_prio_registers, NULL, NULL),
 245 };
 246
 247 static struct irqaction sh73a0_intcs_cascade;
 248
 249 static irqreturn_t sh73a0_intcs_demux(int irq, void *dev_id)
 250 {
 251         unsigned int evtcodeas = ioread32((void __iomem *)dev_id);
 252
 253         generic_handle_irq(intcs_evt2irq(evtcodeas));
 254
 255         return IRQ_HANDLED;
 256 }
 257
 258 static int sh73a0_set_wake(struct irq_data *data, unsigned int on)
 259 {
 260         return 0; /* always allow wakeup */
 261 }
 262
 263 #define RELOC_BASE 0x1200
 264
 265 /* INTCA IRQ pins at INTCS + RELOC_BASE to make space for GIC+INTC handling */
 266 #define INTCS_VECT_RELOC(n, vect) INTCS_VECT((n), (vect) + RELOC_BASE)
 267
 268 INTC_IRQ_PINS_32(intca_irq_pins, 0xe6900000,
 269                  INTCS_VECT_RELOC, "sh73a0-intca-irq-pins");
 270
 271 static int to_gic_irq(struct irq_data *data)
 272 {
 273         unsigned int vect = irq2evt(data->irq) - INTCS_VECT_BASE;
 274
 275         if (vect >= 0x3200)
 276                 vect -= 0x3000;
 277         else
 278                 vect -= 0x0200;
 279
 280         return gic_spi((vect >> 5) + 1);
 281 }
 282
 283 static int to_intca_reloc_irq(struct irq_data *data)
 284 {
 285         return data->irq + (RELOC_BASE >> 5);
 286 }
 287
 288 #define irq_cb(cb, irq) irq_get_chip(irq)->cb(irq_get_irq_data(irq))
 289 #define irq_cbp(cb, irq, p...) irq_get_chip(irq)->cb(irq_get_irq_data(irq), p)
 290
 291 static void intca_gic_enable(struct irq_data *data)
 292 {
 293         irq_cb(irq_unmask, to_intca_reloc_irq(data));
 294         irq_cb(irq_unmask, to_gic_irq(data));
 295 }
 296
 297 static void intca_gic_disable(struct irq_data *data)
 298 {
 299         irq_cb(irq_mask, to_gic_irq(data));
 300         irq_cb(irq_mask, to_intca_reloc_irq(data));
 301 }
 302
 303 static void intca_gic_mask_ack(struct irq_data *data)
 304 {
 305         irq_cb(irq_mask, to_gic_irq(data));
 306         irq_cb(irq_mask_ack, to_intca_reloc_irq(data));
 307 }
 308
 309 static void intca_gic_eoi(struct irq_data *data)
 310 {
 311         irq_cb(irq_eoi, to_gic_irq(data));
 312 }
 313
 314 static int intca_gic_set_type(struct irq_data *data, unsigned int type)
 315 {
 316         return irq_cbp(irq_set_type, to_intca_reloc_irq(data), type);
 317 }
 318
 319 #ifdef CONFIG_SMP
 320 static int intca_gic_set_affinity(struct irq_data *data,
 321                                   const struct cpumask *cpumask,
 322                                   bool force)
 323 {
 324         return irq_cbp(irq_set_affinity, to_gic_irq(data), cpumask, force);
 325 }
 326 #endif
 327
 328 struct irq_chip intca_gic_irq_chip = {
 329         .name                   = "INTCA-GIC",
 330         .irq_mask               = intca_gic_disable,
 331         .irq_unmask             = intca_gic_enable,
 332         .irq_mask_ack           = intca_gic_mask_ack,
 333         .irq_eoi                = intca_gic_eoi,
 334         .irq_enable             = intca_gic_enable,
 335         .irq_disable            = intca_gic_disable,
 336         .irq_shutdown           = intca_gic_disable,
 337         .irq_set_type           = intca_gic_set_type,
 338         .irq_set_wake           = sh73a0_set_wake,
 339 #ifdef CONFIG_SMP
 340         .irq_set_affinity       = intca_gic_set_affinity,
 341 #endif
 342 };
 343
 344 static int to_intc_vect(int irq)
 345 {
 346         unsigned int irq_pin = irq - gic_spi(1);
 347         unsigned int offs;
 348
 349         if (irq_pin < 16)
 350                 offs = 0x0200;
 351         else
 352                 offs = 0x3000;
 353
 354         return offs + (irq_pin << 5);
 355 }
 356
 357 static irqreturn_t sh73a0_irq_pin_demux(int irq, void *dev_id)
 358 {
 359         generic_handle_irq(intcs_evt2irq(to_intc_vect(irq)));
 360         return IRQ_HANDLED;
 361 }
 362
 363 static struct irqaction sh73a0_irq_pin_cascade[32];
 364
 365 #define PINTER0_PHYS 0xe69000a0
 366 #define PINTER1_PHYS 0xe69000a4
 367 #define PINTER0_VIRT IOMEM(0xe69000a0)
 368 #define PINTER1_VIRT IOMEM(0xe69000a4)
 369 #define PINTRR0 IOMEM(0xe69000d0)
 370 #define PINTRR1 IOMEM(0xe69000d4)
 371
 372 #define PINT0A_IRQ(n, irq) INTC_IRQ((n), SH73A0_PINT0_IRQ(irq))
 373 #define PINT0B_IRQ(n, irq) INTC_IRQ((n), SH73A0_PINT0_IRQ(irq + 8))
 374 #define PINT0C_IRQ(n, irq) INTC_IRQ((n), SH73A0_PINT0_IRQ(irq + 16))
 375 #define PINT0D_IRQ(n, irq) INTC_IRQ((n), SH73A0_PINT0_IRQ(irq + 24))
 376 #define PINT1E_IRQ(n, irq) INTC_IRQ((n), SH73A0_PINT1_IRQ(irq))
 377
 378 INTC_PINT(intc_pint0, PINTER0_PHYS, 0xe69000b0, "sh73a0-pint0",         \
 379   INTC_PINT_E(A), INTC_PINT_E(B), INTC_PINT_E(C), INTC_PINT_E(D),       \
 380   INTC_PINT_V(A, PINT0A_IRQ), INTC_PINT_V(B, PINT0B_IRQ),               \
 381   INTC_PINT_V(C, PINT0C_IRQ), INTC_PINT_V(D, PINT0D_IRQ),               \
 382   INTC_PINT_E(A), INTC_PINT_E(B), INTC_PINT_E(C), INTC_PINT_E(D),       \
 383   INTC_PINT_E(A), INTC_PINT_E(B), INTC_PINT_E(C), INTC_PINT_E(D));
 384
 385 INTC_PINT(intc_pint1, PINTER1_PHYS, 0xe69000c0, "sh73a0-pint1",         \
 386   INTC_PINT_E(E), INTC_PINT_E_EMPTY, INTC_PINT_E_EMPTY, INTC_PINT_E_EMPTY, \
 387   INTC_PINT_V(E, PINT1E_IRQ), INTC_PINT_V_NONE,                         \
 388   INTC_PINT_V_NONE, INTC_PINT_V_NONE,                                   \
 389   INTC_PINT_E_NONE, INTC_PINT_E_NONE, INTC_PINT_E_NONE, INTC_PINT_E(E), \
 390   INTC_PINT_E(E), INTC_PINT_E_NONE, INTC_PINT_E_NONE, INTC_PINT_E_NONE);
 391
 392 static struct irqaction sh73a0_pint0_cascade;
 393 static struct irqaction sh73a0_pint1_cascade;
 394
 395 static void pint_demux(void __iomem *rr, void __iomem *er, int base_irq)
 396 {
 397         unsigned long value =  ioread32(rr) & ioread32(er);
 398         int k;
 399
 400         for (k = 0; k < 32; k++) {
 401                 if (value & (1 << (31 - k))) {
 402                         generic_handle_irq(base_irq + k);
 403                         iowrite32(~(1 << (31 - k)), rr);
 404                 }
 405         }
 406 }
 407
 408 static irqreturn_t sh73a0_pint0_demux(int irq, void *dev_id)
 409 {
 410         pint_demux(PINTRR0, PINTER0_VIRT, SH73A0_PINT0_IRQ(0));
 411         return IRQ_HANDLED;
 412 }
 413
 414 static irqreturn_t sh73a0_pint1_demux(int irq, void *dev_id)
 415 {
 416         pint_demux(PINTRR1, PINTER1_VIRT, SH73A0_PINT1_IRQ(0));
 417         return IRQ_HANDLED;
 418 }
 419
 420 void __init sh73a0_init_irq(void)
 421 {
 422         void __iomem *gic_dist_base = IOMEM(0xf0001000);
 423         void __iomem *gic_cpu_base = IOMEM(0xf0000100);
 424         void __iomem *intevtsa = ioremap_nocache(0xffd20100, PAGE_SIZE);
 425         int k, n;
 426
 427         gic_init(0, 29, gic_dist_base, gic_cpu_base);
 428         gic_arch_extn.irq_set_wake = sh73a0_set_wake;
 429
 430         register_intc_controller(&intcs_desc);
 431         register_intc_controller(&intca_irq_pins_desc);
 432         register_intc_controller(&intc_pint0_desc);
 433         register_intc_controller(&intc_pint1_desc);
 434
 435         /* demux using INTEVTSA */
 436         sh73a0_intcs_cascade.name = "INTCS cascade";
 437         sh73a0_intcs_cascade.handler = sh73a0_intcs_demux;
 438         sh73a0_intcs_cascade.dev_id = intevtsa;
 439         setup_irq(gic_spi(50), &sh73a0_intcs_cascade);
 440
 441         /* IRQ pins require special handling through INTCA and GIC */
 442         for (k = 0; k < 32; k++) {
 443                 sh73a0_irq_pin_cascade[k].name = "INTCA-GIC cascade";
 444                 sh73a0_irq_pin_cascade[k].handler = sh73a0_irq_pin_demux;
 445                 setup_irq(gic_spi(1 + k), &sh73a0_irq_pin_cascade[k]);
 446
 447                 n = intcs_evt2irq(to_intc_vect(gic_spi(1 + k)));
 448                 WARN_ON(irq_alloc_desc_at(n, numa_node_id()) != n);
 449                 irq_set_chip_and_handler_name(n, &intca_gic_irq_chip,
 450                                               handle_level_irq, "level");
 451                 set_irq_flags(n, IRQF_VALID); /* yuck */
 452         }
 453
 454         /* PINT pins are sanely tied to the GIC as SPI */
 455         sh73a0_pint0_cascade.name = "PINT0 cascade";
 456         sh73a0_pint0_cascade.handler = sh73a0_pint0_demux;
 457         setup_irq(gic_spi(33), &sh73a0_pint0_cascade);
 458
 459         sh73a0_pint1_cascade.name = "PINT1 cascade";
 460         sh73a0_pint1_cascade.handler = sh73a0_pint1_demux;
 461         setup_irq(gic_spi(34), &sh73a0_pint1_cascade);
 462 }
 463
 464 #ifdef CONFIG_OF
 465 void __init sh73a0_init_irq_dt(void)
 466 {
 467         irqchip_init();
 468         gic_arch_extn.irq_set_wake = sh73a0_set_wake;
 469 }
 470 #endif