hw/intc/xlnx-pmu-iomod-intc.c

   1 /*
   2  * QEMU model of Xilinx I/O Module Interrupt Controller
   3  *
   4  * Copyright (c) 2013 Xilinx Inc
   5  * Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com>
   6  * Written by Alistair Francis <alistair.francis@xilinx.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24  * THE SOFTWARE.
  25  */
  26
  27 #include "qemu/osdep.h"
  28 #include "hw/sysbus.h"
  29 #include "migration/vmstate.h"
  30 #include "hw/register.h"
  31 #include "qemu/bitops.h"
  32 #include "qemu/log.h"
  33 #include "qemu/module.h"
  34 #include "hw/intc/xlnx-pmu-iomod-intc.h"
  35 #include "hw/irq.h"
  36 #include "hw/qdev-properties.h"
  37
  38 #ifndef XLNX_PMU_IO_INTC_ERR_DEBUG
  39 #define XLNX_PMU_IO_INTC_ERR_DEBUG 0
  40 #endif
  41
  42 #define DB_PRINT_L(lvl, fmt, args...) do {\
  43     if (XLNX_PMU_IO_INTC_ERR_DEBUG >= lvl) {\
  44         qemu_log(TYPE_XLNX_PMU_IO_INTC ": %s:" fmt, __func__, ## args);\
  45     } \
  46 } while (0)
  47
  48 #define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args)
  49
  50 REG32(IRQ_MODE, 0xc)
  51 REG32(GPO0, 0x10)
  52     FIELD(GPO0, MAGIC_WORD_1, 24, 8)
  53     FIELD(GPO0, MAGIC_WORD_2, 16, 8)
  54     FIELD(GPO0, FT_INJECT_FAILURE, 13, 3)
  55     FIELD(GPO0, DISABLE_RST_FTSM, 12, 1)
  56     FIELD(GPO0, RST_FTSM, 11, 1)
  57     FIELD(GPO0, CLR_FTSTS, 10, 1)
  58     FIELD(GPO0, RST_ON_SLEEP, 9, 1)
  59     FIELD(GPO0, DISABLE_TRACE_COMP, 8, 1)
  60     FIELD(GPO0, PIT3_PRESCALE, 7, 1)
  61     FIELD(GPO0, PIT2_PRESCALE, 5, 2)
  62     FIELD(GPO0, PIT1_PRESCALE, 3, 2)
  63     FIELD(GPO0, PIT0_PRESCALE, 1, 2)
  64     FIELD(GPO0, DEBUG_REMAP, 0, 1)
  65 REG32(GPO1, 0x14)
  66     FIELD(GPO1, MIO_5, 5, 1)
  67     FIELD(GPO1, MIO_4, 4, 1)
  68     FIELD(GPO1, MIO_3, 3, 1)
  69     FIELD(GPO1, MIO_2, 2, 1)
  70     FIELD(GPO1, MIO_1, 1, 1)
  71     FIELD(GPO1, MIO_0, 0, 1)
  72 REG32(GPO2, 0x18)
  73     FIELD(GPO2, DAP_RPU_WAKE_ACK, 9, 1)
  74     FIELD(GPO2, DAP_FP_WAKE_ACK, 8, 1)
  75     FIELD(GPO2, PS_STATUS, 7, 1)
  76     FIELD(GPO2, PCAP_EN, 6, 1)
  77 REG32(GPO3, 0x1c)
  78     FIELD(GPO3, PL_GPO_31, 31, 1)
  79     FIELD(GPO3, PL_GPO_30, 30, 1)
  80     FIELD(GPO3, PL_GPO_29, 29, 1)
  81     FIELD(GPO3, PL_GPO_28, 28, 1)
  82     FIELD(GPO3, PL_GPO_27, 27, 1)
  83     FIELD(GPO3, PL_GPO_26, 26, 1)
  84     FIELD(GPO3, PL_GPO_25, 25, 1)
  85     FIELD(GPO3, PL_GPO_24, 24, 1)
  86     FIELD(GPO3, PL_GPO_23, 23, 1)
  87     FIELD(GPO3, PL_GPO_22, 22, 1)
  88     FIELD(GPO3, PL_GPO_21, 21, 1)
  89     FIELD(GPO3, PL_GPO_20, 20, 1)
  90     FIELD(GPO3, PL_GPO_19, 19, 1)
  91     FIELD(GPO3, PL_GPO_18, 18, 1)
  92     FIELD(GPO3, PL_GPO_17, 17, 1)
  93     FIELD(GPO3, PL_GPO_16, 16, 1)
  94     FIELD(GPO3, PL_GPO_15, 15, 1)
  95     FIELD(GPO3, PL_GPO_14, 14, 1)
  96     FIELD(GPO3, PL_GPO_13, 13, 1)
  97     FIELD(GPO3, PL_GPO_12, 12, 1)
  98     FIELD(GPO3, PL_GPO_11, 11, 1)
  99     FIELD(GPO3, PL_GPO_10, 10, 1)
 100     FIELD(GPO3, PL_GPO_9, 9, 1)
 101     FIELD(GPO3, PL_GPO_8, 8, 1)
 102     FIELD(GPO3, PL_GPO_7, 7, 1)
 103     FIELD(GPO3, PL_GPO_6, 6, 1)
 104     FIELD(GPO3, PL_GPO_5, 5, 1)
 105     FIELD(GPO3, PL_GPO_4, 4, 1)
 106     FIELD(GPO3, PL_GPO_3, 3, 1)
 107     FIELD(GPO3, PL_GPO_2, 2, 1)
 108     FIELD(GPO3, PL_GPO_1, 1, 1)
 109     FIELD(GPO3, PL_GPO_0, 0, 1)
 110 REG32(GPI0, 0x20)
 111     FIELD(GPI0, RFT_ECC_FATAL_ERR, 31, 1)
 112     FIELD(GPI0, RFT_VOTER_ERR, 30, 1)
 113     FIELD(GPI0, RFT_COMPARE_ERR_23, 29, 1)
 114     FIELD(GPI0, RFT_COMPARE_ERR_13, 28, 1)
 115     FIELD(GPI0, RFT_COMPARE_ERR_12, 27, 1)
 116     FIELD(GPI0, RFT_LS_MISMATCH_23_B, 26, 1)
 117     FIELD(GPI0, RFT_LS_MISMATCH_13_B, 25, 1)
 118     FIELD(GPI0, RFT_LS_MISMATCH_12_B, 24, 1)
 119     FIELD(GPI0, RFT_MISMATCH_STATE, 23, 1)
 120     FIELD(GPI0, RFT_MISMATCH_CPU, 22, 1)
 121     FIELD(GPI0, RFT_SLEEP_RESET, 19, 1)
 122     FIELD(GPI0, RFT_LS_MISMATCH_23_A, 18, 1)
 123     FIELD(GPI0, RFT_LS_MISMATCH_13_A, 17, 1)
 124     FIELD(GPI0, RFT_LS_MISMATCH_12_A, 16, 1)
 125     FIELD(GPI0, NFT_ECC_FATAL_ERR, 15, 1)
 126     FIELD(GPI0, NFT_VOTER_ERR, 14, 1)
 127     FIELD(GPI0, NFT_COMPARE_ERR_23, 13, 1)
 128     FIELD(GPI0, NFT_COMPARE_ERR_13, 12, 1)
 129     FIELD(GPI0, NFT_COMPARE_ERR_12, 11, 1)
 130     FIELD(GPI0, NFT_LS_MISMATCH_23_B, 10, 1)
 131     FIELD(GPI0, NFT_LS_MISMATCH_13_B, 9, 1)
 132     FIELD(GPI0, NFT_LS_MISMATCH_12_B, 8, 1)
 133     FIELD(GPI0, NFT_MISMATCH_STATE, 7, 1)
 134     FIELD(GPI0, NFT_MISMATCH_CPU, 6, 1)
 135     FIELD(GPI0, NFT_SLEEP_RESET, 3, 1)
 136     FIELD(GPI0, NFT_LS_MISMATCH_23_A, 2, 1)
 137     FIELD(GPI0, NFT_LS_MISMATCH_13_A, 1, 1)
 138     FIELD(GPI0, NFT_LS_MISMATCH_12_A, 0, 1)
 139 REG32(GPI1, 0x24)
 140     FIELD(GPI1, APB_AIB_ERROR, 31, 1)
 141     FIELD(GPI1, AXI_AIB_ERROR, 30, 1)
 142     FIELD(GPI1, ERROR_2, 29, 1)
 143     FIELD(GPI1, ERROR_1, 28, 1)
 144     FIELD(GPI1, ACPU_3_DBG_PWRUP, 23, 1)
 145     FIELD(GPI1, ACPU_2_DBG_PWRUP, 22, 1)
 146     FIELD(GPI1, ACPU_1_DBG_PWRUP, 21, 1)
 147     FIELD(GPI1, ACPU_0_DBG_PWRUP, 20, 1)
 148     FIELD(GPI1, FPD_WAKE_GIC_PROXY, 16, 1)
 149     FIELD(GPI1, MIO_WAKE_5, 15, 1)
 150     FIELD(GPI1, MIO_WAKE_4, 14, 1)
 151     FIELD(GPI1, MIO_WAKE_3, 13, 1)
 152     FIELD(GPI1, MIO_WAKE_2, 12, 1)
 153     FIELD(GPI1, MIO_WAKE_1, 11, 1)
 154     FIELD(GPI1, MIO_WAKE_0, 10, 1)
 155     FIELD(GPI1, DAP_RPU_WAKE, 9, 1)
 156     FIELD(GPI1, DAP_FPD_WAKE, 8, 1)
 157     FIELD(GPI1, USB_1_WAKE, 7, 1)
 158     FIELD(GPI1, USB_0_WAKE, 6, 1)
 159     FIELD(GPI1, R5_1_WAKE, 5, 1)
 160     FIELD(GPI1, R5_0_WAKE, 4, 1)
 161     FIELD(GPI1, ACPU_3_WAKE, 3, 1)
 162     FIELD(GPI1, ACPU_2_WAKE, 2, 1)
 163     FIELD(GPI1, ACPU_1_WAKE, 1, 1)
 164     FIELD(GPI1, ACPU_0_WAKE, 0, 1)
 165 REG32(GPI2, 0x28)
 166     FIELD(GPI2, VCC_INT_FP_DISCONNECT, 31, 1)
 167     FIELD(GPI2, VCC_INT_DISCONNECT, 30, 1)
 168     FIELD(GPI2, VCC_AUX_DISCONNECT, 29, 1)
 169     FIELD(GPI2, DBG_ACPU3_RST_REQ, 23, 1)
 170     FIELD(GPI2, DBG_ACPU2_RST_REQ, 22, 1)
 171     FIELD(GPI2, DBG_ACPU1_RST_REQ, 21, 1)
 172     FIELD(GPI2, DBG_ACPU0_RST_REQ, 20, 1)
 173     FIELD(GPI2, CP_ACPU3_RST_REQ, 19, 1)
 174     FIELD(GPI2, CP_ACPU2_RST_REQ, 18, 1)
 175     FIELD(GPI2, CP_ACPU1_RST_REQ, 17, 1)
 176     FIELD(GPI2, CP_ACPU0_RST_REQ, 16, 1)
 177     FIELD(GPI2, DBG_RCPU1_RST_REQ, 9, 1)
 178     FIELD(GPI2, DBG_RCPU0_RST_REQ, 8, 1)
 179     FIELD(GPI2, R5_1_SLEEP, 5, 1)
 180     FIELD(GPI2, R5_0_SLEEP, 4, 1)
 181     FIELD(GPI2, ACPU_3_SLEEP, 3, 1)
 182     FIELD(GPI2, ACPU_2_SLEEP, 2, 1)
 183     FIELD(GPI2, ACPU_1_SLEEP, 1, 1)
 184     FIELD(GPI2, ACPU_0_SLEEP, 0, 1)
 185 REG32(GPI3, 0x2c)
 186     FIELD(GPI3, PL_GPI_31, 31, 1)
 187     FIELD(GPI3, PL_GPI_30, 30, 1)
 188     FIELD(GPI3, PL_GPI_29, 29, 1)
 189     FIELD(GPI3, PL_GPI_28, 28, 1)
 190     FIELD(GPI3, PL_GPI_27, 27, 1)
 191     FIELD(GPI3, PL_GPI_26, 26, 1)
 192     FIELD(GPI3, PL_GPI_25, 25, 1)
 193     FIELD(GPI3, PL_GPI_24, 24, 1)
 194     FIELD(GPI3, PL_GPI_23, 23, 1)
 195     FIELD(GPI3, PL_GPI_22, 22, 1)
 196     FIELD(GPI3, PL_GPI_21, 21, 1)
 197     FIELD(GPI3, PL_GPI_20, 20, 1)
 198     FIELD(GPI3, PL_GPI_19, 19, 1)
 199     FIELD(GPI3, PL_GPI_18, 18, 1)
 200     FIELD(GPI3, PL_GPI_17, 17, 1)
 201     FIELD(GPI3, PL_GPI_16, 16, 1)
 202     FIELD(GPI3, PL_GPI_15, 15, 1)
 203     FIELD(GPI3, PL_GPI_14, 14, 1)
 204     FIELD(GPI3, PL_GPI_13, 13, 1)
 205     FIELD(GPI3, PL_GPI_12, 12, 1)
 206     FIELD(GPI3, PL_GPI_11, 11, 1)
 207     FIELD(GPI3, PL_GPI_10, 10, 1)
 208     FIELD(GPI3, PL_GPI_9, 9, 1)
 209     FIELD(GPI3, PL_GPI_8, 8, 1)
 210     FIELD(GPI3, PL_GPI_7, 7, 1)
 211     FIELD(GPI3, PL_GPI_6, 6, 1)
 212     FIELD(GPI3, PL_GPI_5, 5, 1)
 213     FIELD(GPI3, PL_GPI_4, 4, 1)
 214     FIELD(GPI3, PL_GPI_3, 3, 1)
 215     FIELD(GPI3, PL_GPI_2, 2, 1)
 216     FIELD(GPI3, PL_GPI_1, 1, 1)
 217     FIELD(GPI3, PL_GPI_0, 0, 1)
 218 REG32(IRQ_STATUS, 0x30)
 219     FIELD(IRQ_STATUS, CSU_PMU_SEC_LOCK, 31, 1)
 220     FIELD(IRQ_STATUS, INV_ADDR, 29, 1)
 221     FIELD(IRQ_STATUS, PWR_DN_REQ, 28, 1)
 222     FIELD(IRQ_STATUS, PWR_UP_REQ, 27, 1)
 223     FIELD(IRQ_STATUS, SW_RST_REQ, 26, 1)
 224     FIELD(IRQ_STATUS, HW_RST_REQ, 25, 1)
 225     FIELD(IRQ_STATUS, ISO_REQ, 24, 1)
 226     FIELD(IRQ_STATUS, FW_REQ, 23, 1)
 227     FIELD(IRQ_STATUS, IPI3, 22, 1)
 228     FIELD(IRQ_STATUS, IPI2, 21, 1)
 229     FIELD(IRQ_STATUS, IPI1, 20, 1)
 230     FIELD(IRQ_STATUS, IPI0, 19, 1)
 231     FIELD(IRQ_STATUS, RTC_ALARM, 18, 1)
 232     FIELD(IRQ_STATUS, RTC_EVERY_SECOND, 17, 1)
 233     FIELD(IRQ_STATUS, CORRECTABLE_ECC, 16, 1)
 234     FIELD(IRQ_STATUS, GPI3, 14, 1)
 235     FIELD(IRQ_STATUS, GPI2, 13, 1)
 236     FIELD(IRQ_STATUS, GPI1, 12, 1)
 237     FIELD(IRQ_STATUS, GPI0, 11, 1)
 238     FIELD(IRQ_STATUS, PIT3, 6, 1)
 239     FIELD(IRQ_STATUS, PIT2, 5, 1)
 240     FIELD(IRQ_STATUS, PIT1, 4, 1)
 241     FIELD(IRQ_STATUS, PIT0, 3, 1)
 242 REG32(IRQ_PENDING, 0x34)
 243     FIELD(IRQ_PENDING, CSU_PMU_SEC_LOCK, 31, 1)
 244     FIELD(IRQ_PENDING, INV_ADDR, 29, 1)
 245     FIELD(IRQ_PENDING, PWR_DN_REQ, 28, 1)
 246     FIELD(IRQ_PENDING, PWR_UP_REQ, 27, 1)
 247     FIELD(IRQ_PENDING, SW_RST_REQ, 26, 1)
 248     FIELD(IRQ_PENDING, HW_RST_REQ, 25, 1)
 249     FIELD(IRQ_PENDING, ISO_REQ, 24, 1)
 250     FIELD(IRQ_PENDING, FW_REQ, 23, 1)
 251     FIELD(IRQ_PENDING, IPI3, 22, 1)
 252     FIELD(IRQ_PENDING, IPI2, 21, 1)
 253     FIELD(IRQ_PENDING, IPI1, 20, 1)
 254     FIELD(IRQ_PENDING, IPI0, 19, 1)
 255     FIELD(IRQ_PENDING, RTC_ALARM, 18, 1)
 256     FIELD(IRQ_PENDING, RTC_EVERY_SECOND, 17, 1)
 257     FIELD(IRQ_PENDING, CORRECTABLE_ECC, 16, 1)
 258     FIELD(IRQ_PENDING, GPI3, 14, 1)
 259     FIELD(IRQ_PENDING, GPI2, 13, 1)
 260     FIELD(IRQ_PENDING, GPI1, 12, 1)
 261     FIELD(IRQ_PENDING, GPI0, 11, 1)
 262     FIELD(IRQ_PENDING, PIT3, 6, 1)
 263     FIELD(IRQ_PENDING, PIT2, 5, 1)
 264     FIELD(IRQ_PENDING, PIT1, 4, 1)
 265     FIELD(IRQ_PENDING, PIT0, 3, 1)
 266 REG32(IRQ_ENABLE, 0x38)
 267     FIELD(IRQ_ENABLE, CSU_PMU_SEC_LOCK, 31, 1)
 268     FIELD(IRQ_ENABLE, INV_ADDR, 29, 1)
 269     FIELD(IRQ_ENABLE, PWR_DN_REQ, 28, 1)
 270     FIELD(IRQ_ENABLE, PWR_UP_REQ, 27, 1)
 271     FIELD(IRQ_ENABLE, SW_RST_REQ, 26, 1)
 272     FIELD(IRQ_ENABLE, HW_RST_REQ, 25, 1)
 273     FIELD(IRQ_ENABLE, ISO_REQ, 24, 1)
 274     FIELD(IRQ_ENABLE, FW_REQ, 23, 1)
 275     FIELD(IRQ_ENABLE, IPI3, 22, 1)
 276     FIELD(IRQ_ENABLE, IPI2, 21, 1)
 277     FIELD(IRQ_ENABLE, IPI1, 20, 1)
 278     FIELD(IRQ_ENABLE, IPI0, 19, 1)
 279     FIELD(IRQ_ENABLE, RTC_ALARM, 18, 1)
 280     FIELD(IRQ_ENABLE, RTC_EVERY_SECOND, 17, 1)
 281     FIELD(IRQ_ENABLE, CORRECTABLE_ECC, 16, 1)
 282     FIELD(IRQ_ENABLE, GPI3, 14, 1)
 283     FIELD(IRQ_ENABLE, GPI2, 13, 1)
 284     FIELD(IRQ_ENABLE, GPI1, 12, 1)
 285     FIELD(IRQ_ENABLE, GPI0, 11, 1)
 286     FIELD(IRQ_ENABLE, PIT3, 6, 1)
 287     FIELD(IRQ_ENABLE, PIT2, 5, 1)
 288     FIELD(IRQ_ENABLE, PIT1, 4, 1)
 289     FIELD(IRQ_ENABLE, PIT0, 3, 1)
 290 REG32(IRQ_ACK, 0x3c)
 291     FIELD(IRQ_ACK, CSU_PMU_SEC_LOCK, 31, 1)
 292     FIELD(IRQ_ACK, INV_ADDR, 29, 1)
 293     FIELD(IRQ_ACK, PWR_DN_REQ, 28, 1)
 294     FIELD(IRQ_ACK, PWR_UP_REQ, 27, 1)
 295     FIELD(IRQ_ACK, SW_RST_REQ, 26, 1)
 296     FIELD(IRQ_ACK, HW_RST_REQ, 25, 1)
 297     FIELD(IRQ_ACK, ISO_REQ, 24, 1)
 298     FIELD(IRQ_ACK, FW_REQ, 23, 1)
 299     FIELD(IRQ_ACK, IPI3, 22, 1)
 300     FIELD(IRQ_ACK, IPI2, 21, 1)
 301     FIELD(IRQ_ACK, IPI1, 20, 1)
 302     FIELD(IRQ_ACK, IPI0, 19, 1)
 303     FIELD(IRQ_ACK, RTC_ALARM, 18, 1)
 304     FIELD(IRQ_ACK, RTC_EVERY_SECOND, 17, 1)
 305     FIELD(IRQ_ACK, CORRECTABLE_ECC, 16, 1)
 306     FIELD(IRQ_ACK, GPI3, 14, 1)
 307     FIELD(IRQ_ACK, GPI2, 13, 1)
 308     FIELD(IRQ_ACK, GPI1, 12, 1)
 309     FIELD(IRQ_ACK, GPI0, 11, 1)
 310     FIELD(IRQ_ACK, PIT3, 6, 1)
 311     FIELD(IRQ_ACK, PIT2, 5, 1)
 312     FIELD(IRQ_ACK, PIT1, 4, 1)
 313     FIELD(IRQ_ACK, PIT0, 3, 1)
 314 REG32(PIT0_PRELOAD, 0x40)
 315 REG32(PIT0_COUNTER, 0x44)
 316 REG32(PIT0_CONTROL, 0x48)
 317     FIELD(PIT0_CONTROL, PRELOAD, 1, 1)
 318     FIELD(PIT0_CONTROL, EN, 0, 1)
 319 REG32(PIT1_PRELOAD, 0x50)
 320 REG32(PIT1_COUNTER, 0x54)
 321 REG32(PIT1_CONTROL, 0x58)
 322     FIELD(PIT1_CONTROL, PRELOAD, 1, 1)
 323     FIELD(PIT1_CONTROL, EN, 0, 1)
 324 REG32(PIT2_PRELOAD, 0x60)
 325 REG32(PIT2_COUNTER, 0x64)
 326 REG32(PIT2_CONTROL, 0x68)
 327     FIELD(PIT2_CONTROL, PRELOAD, 1, 1)
 328     FIELD(PIT2_CONTROL, EN, 0, 1)
 329 REG32(PIT3_PRELOAD, 0x70)
 330 REG32(PIT3_COUNTER, 0x74)
 331 REG32(PIT3_CONTROL, 0x78)
 332     FIELD(PIT3_CONTROL, PRELOAD, 1, 1)
 333     FIELD(PIT3_CONTROL, EN, 0, 1)
 334
 335 static void xlnx_pmu_io_irq_update(XlnxPMUIOIntc *s)
 336 {
 337     bool irq_out;
 338
 339     s->regs[R_IRQ_PENDING] = s->regs[R_IRQ_STATUS] & s->regs[R_IRQ_ENABLE];
 340     irq_out = !!s->regs[R_IRQ_PENDING];
 341
 342     DB_PRINT("Setting IRQ output = %d\n", irq_out);
 343
 344     qemu_set_irq(s->parent_irq, irq_out);
 345 }
 346
 347 static void xlnx_pmu_io_irq_enable_postw(RegisterInfo *reg, uint64_t val64)
 348 {
 349     XlnxPMUIOIntc *s = XLNX_PMU_IO_INTC(reg->opaque);
 350
 351     xlnx_pmu_io_irq_update(s);
 352 }
 353
 354 static void xlnx_pmu_io_irq_ack_postw(RegisterInfo *reg, uint64_t val64)
 355 {
 356     XlnxPMUIOIntc *s = XLNX_PMU_IO_INTC(reg->opaque);
 357     uint32_t val = val64;
 358
 359     /* Only clear */
 360     val &= s->regs[R_IRQ_STATUS];
 361     s->regs[R_IRQ_STATUS] ^= val;
 362
 363     /* Active level triggered interrupts stay high.  */
 364     s->regs[R_IRQ_STATUS] |= s->irq_raw & ~s->cfg.level_edge;
 365
 366     xlnx_pmu_io_irq_update(s);
 367 }
 368
 369 static const RegisterAccessInfo xlnx_pmu_io_intc_regs_info[] = {
 370     {   .name = "IRQ_MODE",  .addr = A_IRQ_MODE,
 371         .rsvd = 0xffffffff,
 372     },{ .name = "GPO0",  .addr = A_GPO0,
 373     },{ .name = "GPO1",  .addr = A_GPO1,
 374         .rsvd = 0xffffffc0,
 375     },{ .name = "GPO2",  .addr = A_GPO2,
 376         .rsvd = 0xfffffc3f,
 377     },{ .name = "GPO3",  .addr = A_GPO3,
 378     },{ .name = "GPI0",  .addr = A_GPI0,
 379         .rsvd = 0x300030,
 380         .ro = 0xffcfffcf,
 381     },{ .name = "GPI1",  .addr = A_GPI1,
 382         .rsvd = 0xf0e0000,
 383         .ro = 0xf0f1ffff,
 384     },{ .name = "GPI2",  .addr = A_GPI2,
 385         .rsvd = 0x1f00fcc0,
 386         .ro = 0xe0ff033f,
 387     },{ .name = "GPI3",  .addr = A_GPI3,
 388         .ro = 0xffffffff,
 389     },{ .name = "IRQ_STATUS",  .addr = A_IRQ_STATUS,
 390         .rsvd = 0x40008787,
 391         .ro = 0xbfff7878,
 392     },{ .name = "IRQ_PENDING",  .addr = A_IRQ_PENDING,
 393         .rsvd = 0x40008787,
 394         .ro = 0xdfff7ff8,
 395     },{ .name = "IRQ_ENABLE",  .addr = A_IRQ_ENABLE,
 396         .rsvd = 0x40008787,
 397         .ro = 0x7800,
 398         .post_write = xlnx_pmu_io_irq_enable_postw,
 399     },{ .name = "IRQ_ACK",  .addr = A_IRQ_ACK,
 400         .rsvd = 0x40008787,
 401         .post_write = xlnx_pmu_io_irq_ack_postw,
 402     },{ .name = "PIT0_PRELOAD",  .addr = A_PIT0_PRELOAD,
 403         .ro = 0xffffffff,
 404     },{ .name = "PIT0_COUNTER",  .addr = A_PIT0_COUNTER,
 405         .ro = 0xffffffff,
 406     },{ .name = "PIT0_CONTROL",  .addr = A_PIT0_CONTROL,
 407         .rsvd = 0xfffffffc,
 408     },{ .name = "PIT1_PRELOAD",  .addr = A_PIT1_PRELOAD,
 409         .ro = 0xffffffff,
 410     },{ .name = "PIT1_COUNTER",  .addr = A_PIT1_COUNTER,
 411         .ro = 0xffffffff,
 412     },{ .name = "PIT1_CONTROL",  .addr = A_PIT1_CONTROL,
 413         .rsvd = 0xfffffffc,
 414     },{ .name = "PIT2_PRELOAD",  .addr = A_PIT2_PRELOAD,
 415         .ro = 0xffffffff,
 416     },{ .name = "PIT2_COUNTER",  .addr = A_PIT2_COUNTER,
 417         .ro = 0xffffffff,
 418     },{ .name = "PIT2_CONTROL",  .addr = A_PIT2_CONTROL,
 419         .rsvd = 0xfffffffc,
 420     },{ .name = "PIT3_PRELOAD",  .addr = A_PIT3_PRELOAD,
 421         .ro = 0xffffffff,
 422     },{ .name = "PIT3_COUNTER",  .addr = A_PIT3_COUNTER,
 423         .ro = 0xffffffff,
 424     },{ .name = "PIT3_CONTROL",  .addr = A_PIT3_CONTROL,
 425         .rsvd = 0xfffffffc,
 426     }
 427 };
 428
 429 static void irq_handler(void *opaque, int irq, int level)
 430 {
 431     XlnxPMUIOIntc *s = XLNX_PMU_IO_INTC(opaque);
 432     uint32_t mask = 1 << irq;
 433     uint32_t prev = s->irq_raw;
 434     uint32_t temp;
 435
 436     s->irq_raw &= ~mask;
 437     s->irq_raw |= (!!level) << irq;
 438
 439     /* Turn active-low into active-high.  */
 440     s->irq_raw ^= (~s->cfg.positive);
 441     s->irq_raw &= mask;
 442
 443     if (s->cfg.level_edge & mask) {
 444         /* Edge triggered.  */
 445         temp = (prev ^ s->irq_raw) & s->irq_raw;
 446     } else {
 447         /* Level triggered.  */
 448         temp = s->irq_raw;
 449     }
 450     s->regs[R_IRQ_STATUS] |= temp;
 451
 452     xlnx_pmu_io_irq_update(s);
 453 }
 454
 455 static void xlnx_pmu_io_intc_reset(DeviceState *dev)
 456 {
 457     XlnxPMUIOIntc *s = XLNX_PMU_IO_INTC(dev);
 458     unsigned int i;
 459
 460     for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) {
 461         register_reset(&s->regs_info[i]);
 462     }
 463
 464     xlnx_pmu_io_irq_update(s);
 465 }
 466
 467 static const MemoryRegionOps xlnx_pmu_io_intc_ops = {
 468     .read = register_read_memory,
 469     .write = register_write_memory,
 470     .endianness = DEVICE_LITTLE_ENDIAN,
 471     .valid = {
 472         .min_access_size = 4,
 473         .max_access_size = 4,
 474     },
 475 };
 476
 477 static Property xlnx_pmu_io_intc_properties[] = {
 478     DEFINE_PROP_UINT32("intc-intr-size", XlnxPMUIOIntc, cfg.intr_size, 0),
 479     DEFINE_PROP_UINT32("intc-level-edge", XlnxPMUIOIntc, cfg.level_edge, 0),
 480     DEFINE_PROP_UINT32("intc-positive", XlnxPMUIOIntc, cfg.positive, 0),
 481     DEFINE_PROP_END_OF_LIST(),
 482 };
 483
 484 static void xlnx_pmu_io_intc_realize(DeviceState *dev, Error **errp)
 485 {
 486     XlnxPMUIOIntc *s = XLNX_PMU_IO_INTC(dev);
 487
 488     /* Internal interrupts are edge triggered */
 489     s->cfg.level_edge <<= 16;
 490     s->cfg.level_edge |= 0xffff;
 491
 492     /* Internal interrupts are positive. */
 493     s->cfg.positive <<= 16;
 494     s->cfg.positive |= 0xffff;
 495
 496     /* Max 16 external interrupts. */
 497     assert(s->cfg.intr_size <= 16);
 498
 499     qdev_init_gpio_in(dev, irq_handler, 16 + s->cfg.intr_size);
 500 }
 501
 502 static void xlnx_pmu_io_intc_init(Object *obj)
 503 {
 504     XlnxPMUIOIntc *s = XLNX_PMU_IO_INTC(obj);
 505     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 506     RegisterInfoArray *reg_array;
 507
 508     memory_region_init(&s->iomem, obj, TYPE_XLNX_PMU_IO_INTC,
 509                        XLNXPMUIOINTC_R_MAX * 4);
 510     reg_array =
 511         register_init_block32(DEVICE(obj), xlnx_pmu_io_intc_regs_info,
 512                               ARRAY_SIZE(xlnx_pmu_io_intc_regs_info),
 513                               s->regs_info, s->regs,
 514                               &xlnx_pmu_io_intc_ops,
 515                               XLNX_PMU_IO_INTC_ERR_DEBUG,
 516                               XLNXPMUIOINTC_R_MAX * 4);
 517     memory_region_add_subregion(&s->iomem,
 518                                 0x0,
 519                                 &reg_array->mem);
 520     sysbus_init_mmio(sbd, &s->iomem);
 521
 522     sysbus_init_irq(sbd, &s->parent_irq);
 523 }
 524
 525 static const VMStateDescription vmstate_xlnx_pmu_io_intc = {
 526     .name = TYPE_XLNX_PMU_IO_INTC,
 527     .version_id = 1,
 528     .minimum_version_id = 1,
 529     .fields = (const VMStateField[]) {
 530         VMSTATE_UINT32_ARRAY(regs, XlnxPMUIOIntc, XLNXPMUIOINTC_R_MAX),
 531         VMSTATE_END_OF_LIST(),
 532     }
 533 };
 534
 535 static void xlnx_pmu_io_intc_class_init(ObjectClass *klass, void *data)
 536 {
 537     DeviceClass *dc = DEVICE_CLASS(klass);
 538
 539     dc->reset = xlnx_pmu_io_intc_reset;
 540     dc->realize = xlnx_pmu_io_intc_realize;
 541     dc->vmsd = &vmstate_xlnx_pmu_io_intc;
 542     device_class_set_props(dc, xlnx_pmu_io_intc_properties);
 543 }
 544
 545 static const TypeInfo xlnx_pmu_io_intc_info = {
 546     .name          = TYPE_XLNX_PMU_IO_INTC,
 547     .parent        = TYPE_SYS_BUS_DEVICE,
 548     .instance_size = sizeof(XlnxPMUIOIntc),
 549     .class_init    = xlnx_pmu_io_intc_class_init,
 550     .instance_init = xlnx_pmu_io_intc_init,
 551 };
 552
 553 static void xlnx_pmu_io_intc_register_types(void)
 554 {
 555     type_register_static(&xlnx_pmu_io_intc_info);
 556 }
 557
 558 type_init(xlnx_pmu_io_intc_register_types)