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