include/hw/intc/mips_gic.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2000, 07 MIPS Technologies, Inc.
   7  * Copyright (C) 2016 Imagination Technologies
   8  *
   9  */
  10
  11 #ifndef MIPS_GIC_H
  12 #define MIPS_GIC_H
  13
  14 #include "hw/timer/mips_gictimer.h"
  15 #include "cpu.h"
  16 /*
  17  * GIC Specific definitions
  18  */
  19
  20 /* The MIPS default location */
  21 #define GIC_BASE_ADDR           0x1bdc0000ULL
  22 #define GIC_ADDRSPACE_SZ        (128 * 1024)
  23
  24 /* Constants */
  25 #define GIC_POL_POS     1
  26 #define GIC_POL_NEG     0
  27 #define GIC_TRIG_EDGE   1
  28 #define GIC_TRIG_LEVEL  0
  29
  30 #define MSK(n)              ((1ULL << (n)) - 1)
  31
  32 /* GIC Address Space */
  33 #define SHARED_SECTION_OFS          0x0000
  34 #define SHARED_SECTION_SIZE         0x8000
  35 #define VP_LOCAL_SECTION_OFS        0x8000
  36 #define VP_LOCAL_SECTION_SIZE       0x4000
  37 #define VP_OTHER_SECTION_OFS        0xc000
  38 #define VP_OTHER_SECTION_SIZE       0x4000
  39 #define USM_VISIBLE_SECTION_OFS     0x10000
  40 #define USM_VISIBLE_SECTION_SIZE    0x10000
  41
  42 /* Register Map for Shared Section */
  43
  44 #define GIC_SH_CONFIG_OFS           0x0000
  45
  46 /* Shared Global Counter */
  47 #define GIC_SH_COUNTERLO_OFS        0x0010
  48 #define GIC_SH_COUNTERHI_OFS        0x0014
  49 #define GIC_SH_REVISIONID_OFS       0x0020
  50
  51 /* Set/Clear corresponding bit in Edge Detect Register */
  52 #define GIC_SH_WEDGE_OFS            0x0280
  53
  54 /* Reset Mask - Disables Interrupt */
  55 #define GIC_SH_RMASK_OFS            0x0300
  56 #define GIC_SH_RMASK_LAST_OFS       0x031c
  57
  58 /* Set Mask (WO) - Enables Interrupt */
  59 #define GIC_SH_SMASK_OFS            0x0380
  60 #define GIC_SH_SMASK_LAST_OFS       0x039c
  61
  62 /* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */
  63 #define GIC_SH_MASK_OFS             0x0400
  64 #define GIC_SH_MASK_LAST_OFS        0x041c
  65
  66 /* Pending Global Interrupts (RO) */
  67 #define GIC_SH_PEND_OFS             0x0480
  68 #define GIC_SH_PEND_LAST_OFS        0x049c
  69
  70 #define GIC_SH_MAP0_PIN_OFS         0x0500
  71 #define GIC_SH_MAP255_PIN_OFS       0x08fc
  72
  73 #define GIC_SH_MAP0_VP_OFS          0x2000
  74 #define GIC_SH_MAP255_VP_LAST_OFS   0x3fe4
  75
  76 /* Register Map for Local Section */
  77 #define GIC_VP_CTL_OFS              0x0000
  78 #define GIC_VP_PEND_OFS             0x0004
  79 #define GIC_VP_MASK_OFS             0x0008
  80 #define GIC_VP_RMASK_OFS            0x000c
  81 #define GIC_VP_SMASK_OFS            0x0010
  82 #define GIC_VP_WD_MAP_OFS           0x0040
  83 #define GIC_VP_COMPARE_MAP_OFS      0x0044
  84 #define GIC_VP_TIMER_MAP_OFS        0x0048
  85 #define GIC_VP_FDC_MAP_OFS          0x004c
  86 #define GIC_VP_PERFCTR_MAP_OFS      0x0050
  87 #define GIC_VP_SWINT0_MAP_OFS       0x0054
  88 #define GIC_VP_SWINT1_MAP_OFS       0x0058
  89 #define GIC_VP_OTHER_ADDR_OFS       0x0080
  90 #define GIC_VP_IDENT_OFS            0x0088
  91 #define GIC_VP_WD_CONFIG0_OFS       0x0090
  92 #define GIC_VP_WD_COUNT0_OFS        0x0094
  93 #define GIC_VP_WD_INITIAL0_OFS      0x0098
  94 #define GIC_VP_COMPARE_LO_OFS       0x00a0
  95 #define GIC_VP_COMPARE_HI_OFS       0x00a4
  96 #define GIC_VL_BRK_GROUP            0x3080
  97
  98 /* User-Mode Visible Section Register */
  99 /* Read-only alias for GIC Shared CounterLo */
 100 #define GIC_USER_MODE_COUNTERLO     0x0000
 101 /* Read-only alias for GIC Shared CounterHi */
 102 #define GIC_USER_MODE_COUNTERHI     0x0004
 103
 104 /* Masks */
 105 #define GIC_SH_CONFIG_COUNTSTOP_SHF     28
 106 #define GIC_SH_CONFIG_COUNTSTOP_MSK     (MSK(1) << GIC_SH_CONFIG_COUNTSTOP_SHF)
 107 #define GIC_SH_CONFIG_COUNTBITS_SHF     24
 108 #define GIC_SH_CONFIG_COUNTBITS_MSK     (MSK(4) << GIC_SH_CONFIG_COUNTBITS_SHF)
 109 #define GIC_SH_CONFIG_NUMINTRS_SHF      16
 110 #define GIC_SH_CONFIG_NUMINTRS_MSK      (MSK(8) << GIC_SH_CONFIG_NUMINTRS_SHF)
 111 #define GIC_SH_CONFIG_PVPS_SHF          0
 112 #define GIC_SH_CONFIG_PVPS_MSK          (MSK(8) << GIC_SH_CONFIG_NUMVPS_SHF)
 113
 114 #define GIC_SH_WEDGE_RW_SHF             31
 115 #define GIC_SH_WEDGE_RW_MSK             (MSK(1) << GIC_SH_WEDGE_RW_SHF)
 116
 117 #define GIC_MAP_TO_PIN_SHF              31
 118 #define GIC_MAP_TO_PIN_MSK              (MSK(1) << GIC_MAP_TO_PIN_SHF)
 119 #define GIC_MAP_TO_NMI_SHF              30
 120 #define GIC_MAP_TO_NMI_MSK              (MSK(1) << GIC_MAP_TO_NMI_SHF)
 121 #define GIC_MAP_TO_YQ_SHF               29
 122 #define GIC_MAP_TO_YQ_MSK               (MSK(1) << GIC_MAP_TO_YQ_SHF)
 123 #define GIC_MAP_SHF                     0
 124 #define GIC_MAP_MSK                     (MSK(6) << GIC_MAP_SHF)
 125 #define GIC_MAP_TO_PIN_REG_MSK          \
 126     (GIC_MAP_TO_PIN_MSK | GIC_MAP_TO_NMI_MSK | GIC_MAP_TO_YQ_MSK | GIC_MAP_MSK)
 127
 128 /* GIC_VP_CTL Masks */
 129 #define GIC_VP_CTL_FDC_RTBL_SHF         4
 130 #define GIC_VP_CTL_FDC_RTBL_MSK         (MSK(1) << GIC_VP_CTL_FDC_RTBL_SHF)
 131 #define GIC_VP_CTL_SWINT_RTBL_SHF       3
 132 #define GIC_VP_CTL_SWINT_RTBL_MSK       (MSK(1) << GIC_VP_CTL_SWINT_RTBL_SHF)
 133 #define GIC_VP_CTL_PERFCNT_RTBL_SHF     2
 134 #define GIC_VP_CTL_PERFCNT_RTBL_MSK     (MSK(1) << GIC_VP_CTL_PERFCNT_RTBL_SHF)
 135 #define GIC_VP_CTL_TIMER_RTBL_SHF       1
 136 #define GIC_VP_CTL_TIMER_RTBL_MSK       (MSK(1) << GIC_VP_CTL_TIMER_RTBL_SHF)
 137 #define GIC_VP_CTL_EIC_MODE_SHF         0
 138 #define GIC_VP_CTL_EIC_MODE_MSK         (MSK(1) << GIC_VP_CTL_EIC_MODE_SHF)
 139
 140 /* GIC_VP_MASK Masks */
 141 #define GIC_VP_MASK_FDC_SHF         6
 142 #define GIC_VP_MASK_FDC_MSK         (MSK(1) << GIC_VP_MASK_FDC_SHF)
 143 #define GIC_VP_MASK_SWINT1_SHF      5
 144 #define GIC_VP_MASK_SWINT1_MSK      (MSK(1) << GIC_VP_MASK_SWINT1_SHF)
 145 #define GIC_VP_MASK_SWINT0_SHF      4
 146 #define GIC_VP_MASK_SWINT0_MSK      (MSK(1) << GIC_VP_MASK_SWINT0_SHF)
 147 #define GIC_VP_MASK_PERFCNT_SHF     3
 148 #define GIC_VP_MASK_PERFCNT_MSK     (MSK(1) << GIC_VP_MASK_PERFCNT_SHF)
 149 #define GIC_VP_MASK_TIMER_SHF       2
 150 #define GIC_VP_MASK_TIMER_MSK       (MSK(1) << GIC_VP_MASK_TIMER_SHF)
 151 #define GIC_VP_MASK_CMP_SHF         1
 152 #define GIC_VP_MASK_CMP_MSK         (MSK(1) << GIC_VP_MASK_CMP_SHF)
 153 #define GIC_VP_MASK_WD_SHF          0
 154 #define GIC_VP_MASK_WD_MSK          (MSK(1) << GIC_VP_MASK_WD_SHF)
 155 #define GIC_VP_SET_RESET_MSK        (MSK(7) << GIC_VP_MASK_WD_SHF)
 156
 157 #define GIC_CPU_INT_MAX             5 /* Core Interrupt 7 */
 158 #define GIC_CPU_PIN_OFFSET          2
 159
 160 /* Local GIC interrupts. */
 161 #define GIC_NUM_LOCAL_INTRS     7
 162 #define GIC_LOCAL_INT_FDC       6 /* CPU fast debug channel */
 163 #define GIC_LOCAL_INT_SWINT1    5 /* CPU software interrupt 1 */
 164 #define GIC_LOCAL_INT_SWINT0    4 /* CPU software interrupt 0 */
 165 #define GIC_LOCAL_INT_PERFCTR   3 /* CPU performance counter */
 166 #define GIC_LOCAL_INT_TIMER     2 /* CPU timer interrupt */
 167 #define GIC_LOCAL_INT_COMPARE   1 /* GIC count and compare timer */
 168 #define GIC_LOCAL_INT_WD        0 /* GIC watchdog */
 169
 170 #define TYPE_MIPS_GIC "mips-gic"
 171 #define MIPS_GIC(obj) OBJECT_CHECK(MIPSGICState, (obj), TYPE_MIPS_GIC)
 172
 173 /* Support up to 32 VPs and 256 IRQs */
 174 #define GIC_MAX_VPS             32
 175 #define GIC_MAX_INTRS           256
 176
 177 typedef struct MIPSGICState MIPSGICState;
 178 typedef struct MIPSGICIRQState MIPSGICIRQState;
 179 typedef struct MIPSGICVPState MIPSGICVPState;
 180
 181 struct MIPSGICIRQState {
 182     uint8_t enabled;
 183     uint8_t pending;
 184     uint32_t map_pin;
 185     int32_t map_vp;
 186     qemu_irq irq;
 187 };
 188
 189 struct MIPSGICVPState {
 190     uint32_t ctl;
 191     uint32_t pend;
 192     uint32_t mask;
 193     uint32_t compare_map;
 194     uint32_t other_addr;
 195     CPUMIPSState *env;
 196 };
 197
 198 struct MIPSGICState {
 199     SysBusDevice parent_obj;
 200     MemoryRegion mr;
 201
 202     /* Shared Section Registers */
 203     uint32_t sh_config;
 204     MIPSGICIRQState *irq_state;
 205
 206     /* VP Local/Other Section Registers */
 207     MIPSGICVPState *vps;
 208
 209     /* GIC VP Timer */
 210     MIPSGICTimerState *gic_timer;
 211
 212     int32_t num_vps;
 213     int32_t num_irq;
 214 };
 215
 216 #endif /* MIPS_GIC_H */