include/hw/i386/apic_internal.h

   1 /*
   2  *  APIC support - internal interfaces
   3  *
   4  *  Copyright (c) 2004-2005 Fabrice Bellard
   5  *  Copyright (c) 2011      Jan Kiszka, Siemens AG
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, see <http://www.gnu.org/licenses/>
  19  */
  20
  21 #ifndef QEMU_APIC_INTERNAL_H
  22 #define QEMU_APIC_INTERNAL_H
  23
  24 #include "cpu.h"
  25 #include "exec/memory.h"
  26 #include "qemu/timer.h"
  27 #include "target/i386/cpu-qom.h"
  28 #include "qom/object.h"
  29
  30 /* APIC Local Vector Table */
  31 #define APIC_LVT_TIMER                  0
  32 #define APIC_LVT_THERMAL                1
  33 #define APIC_LVT_PERFORM                2
  34 #define APIC_LVT_LINT0                  3
  35 #define APIC_LVT_LINT1                  4
  36 #define APIC_LVT_ERROR                  5
  37 #define APIC_LVT_NB                     6
  38
  39 /* APIC delivery modes */
  40 #define APIC_DM_FIXED                   0
  41 #define APIC_DM_LOWPRI                  1
  42 #define APIC_DM_SMI                     2
  43 #define APIC_DM_NMI                     4
  44 #define APIC_DM_INIT                    5
  45 #define APIC_DM_SIPI                    6
  46 #define APIC_DM_EXTINT                  7
  47
  48 /* APIC destination mode */
  49 #define APIC_DESTMODE_PHYSICAL          0
  50 #define APIC_DESTMODE_LOGICAL           1
  51 #define APIC_DESTMODE_LOGICAL_FLAT      0xf
  52 #define APIC_DESTMODE_LOGICAL_CLUSTER   0
  53
  54 #define APIC_TRIGGER_EDGE               0
  55 #define APIC_TRIGGER_LEVEL              1
  56
  57 #define APIC_VECTOR_MASK                0xff
  58 #define APIC_DCR_MASK                   0xf
  59
  60 #define APIC_LVT_TIMER_SHIFT            17
  61 #define APIC_LVT_MASKED_SHIFT           16
  62 #define APIC_LVT_LEVEL_TRIGGER_SHIFT    15
  63 #define APIC_LVT_REMOTE_IRR_SHIFT       14
  64 #define APIC_LVT_INT_POLARITY_SHIFT     13
  65 #define APIC_LVT_DELIV_STS_SHIFT        12
  66 #define APIC_LVT_DELIV_MOD_SHIFT        8
  67
  68 #define APIC_LVT_TIMER_TSCDEADLINE      (2 << APIC_LVT_TIMER_SHIFT)
  69 #define APIC_LVT_TIMER_PERIODIC         (1 << APIC_LVT_TIMER_SHIFT)
  70 #define APIC_LVT_MASKED                 (1 << APIC_LVT_MASKED_SHIFT)
  71 #define APIC_LVT_LEVEL_TRIGGER          (1 << APIC_LVT_LEVEL_TRIGGER_SHIFT)
  72 #define APIC_LVT_REMOTE_IRR             (1 << APIC_LVT_REMOTE_IRR_SHIFT)
  73 #define APIC_LVT_INT_POLARITY           (1 << APIC_LVT_INT_POLARITY_SHIFT)
  74 #define APIC_LVT_DELIV_STS              (1 << APIC_LVT_DELIV_STS_SHIFT)
  75 #define APIC_LVT_DELIV_MOD              (7 << APIC_LVT_DELIV_MOD_SHIFT)
  76
  77 #define APIC_ESR_ILL_ADDRESS_SHIFT      7
  78 #define APIC_ESR_RECV_ILL_VECT_SHIFT    6
  79 #define APIC_ESR_SEND_ILL_VECT_SHIFT    5
  80 #define APIC_ESR_RECV_ACCEPT_SHIFT      3
  81 #define APIC_ESR_SEND_ACCEPT_SHIFT      2
  82 #define APIC_ESR_RECV_CHECK_SUM_SHIFT   1
  83
  84 #define APIC_ESR_ILLEGAL_ADDRESS        (1 << APIC_ESR_ILL_ADDRESS_SHIFT)
  85 #define APIC_ESR_RECV_ILLEGAL_VECT      (1 << APIC_ESR_RECV_ILL_VECT_SHIFT)
  86 #define APIC_ESR_SEND_ILLEGAL_VECT      (1 << APIC_ESR_SEND_ILL_VECT_SHIFT)
  87 #define APIC_ESR_RECV_ACCEPT            (1 << APIC_ESR_RECV_ACCEPT_SHIFT)
  88 #define APIC_ESR_SEND_ACCEPT            (1 << APIC_ESR_SEND_ACCEPT_SHIFT)
  89 #define APIC_ESR_RECV_CHECK_SUM         (1 << APIC_ESR_RECV_CHECK_SUM_SHIFT)
  90 #define APIC_ESR_SEND_CHECK_SUM         1
  91
  92 #define APIC_ICR_DEST_SHIFT             24
  93 #define APIC_ICR_DEST_SHORT_SHIFT       18
  94 #define APIC_ICR_TRIGGER_MOD_SHIFT      15
  95 #define APIC_ICR_LEVEL_SHIFT            14
  96 #define APIC_ICR_DELIV_STS_SHIFT        12
  97 #define APIC_ICR_DEST_MOD_SHIFT         11
  98 #define APIC_ICR_DELIV_MOD_SHIFT        8
  99
 100 #define APIC_ICR_DEST_SHORT             (3 << APIC_ICR_DEST_SHORT_SHIFT)
 101 #define APIC_ICR_TRIGGER_MOD            (1 << APIC_ICR_TRIGGER_MOD_SHIFT)
 102 #define APIC_ICR_LEVEL                  (1 << APIC_ICR_LEVEL_SHIFT)
 103 #define APIC_ICR_DELIV_STS              (1 << APIC_ICR_DELIV_STS_SHIFT)
 104 #define APIC_ICR_DEST_MOD               (1 << APIC_ICR_DEST_MOD_SHIFT)
 105 #define APIC_ICR_DELIV_MOD              (7 << APIC_ICR_DELIV_MOD_SHIFT)
 106
 107 #define APIC_PR_CLASS_SHIFT             4
 108 #define APIC_PR_SUB_CLASS               0xf
 109
 110 #define APIC_LOGDEST_XAPIC_SHIFT        4
 111 #define APIC_LOGDEST_XAPIC_ID           0xf
 112
 113 #define APIC_LOGDEST_X2APIC_SHIFT       16
 114 #define APIC_LOGDEST_X2APIC_ID          0xffff
 115
 116 #define APIC_SPURIO_FOCUS_SHIFT         9
 117 #define APIC_SPURIO_ENABLED_SHIFT       8
 118
 119 #define APIC_SPURIO_FOCUS               (1 << APIC_SPURIO_FOCUS_SHIFT)
 120 #define APIC_SPURIO_ENABLED             (1 << APIC_SPURIO_ENABLED_SHIFT)
 121
 122 #define APIC_SV_DIRECTED_IO             (1 << 12)
 123 #define APIC_SV_ENABLE                  (1 << 8)
 124
 125 #define VAPIC_ENABLE_BIT                0
 126 #define VAPIC_ENABLE_MASK               (1 << VAPIC_ENABLE_BIT)
 127
 128 typedef struct APICCommonState APICCommonState;
 129
 130 #define TYPE_APIC_COMMON "apic-common"
 131 typedef struct APICCommonClass APICCommonClass;
 132 DECLARE_OBJ_CHECKERS(APICCommonState, APICCommonClass,
 133                      APIC_COMMON, TYPE_APIC_COMMON)
 134
 135 struct APICCommonClass {
 136     DeviceClass parent_class;
 137
 138     DeviceRealize realize;
 139     DeviceUnrealize unrealize;
 140     int (*set_base)(APICCommonState *s, uint64_t val);
 141     void (*set_tpr)(APICCommonState *s, uint8_t val);
 142     uint8_t (*get_tpr)(APICCommonState *s);
 143     void (*enable_tpr_reporting)(APICCommonState *s, bool enable);
 144     void (*vapic_base_update)(APICCommonState *s);
 145     void (*external_nmi)(APICCommonState *s);
 146     void (*pre_save)(APICCommonState *s);
 147     void (*post_load)(APICCommonState *s);
 148     void (*reset)(APICCommonState *s);
 149     /* send_msi emulates an APIC bus and its proper place would be in a new
 150      * device, but it's convenient to have it here for now.
 151      */
 152     void (*send_msi)(MSIMessage *msi);
 153 };
 154
 155 struct APICCommonState {
 156     /*< private >*/
 157     DeviceState parent_obj;
 158     /*< public >*/
 159
 160     MemoryRegion io_memory;
 161     X86CPU *cpu;
 162     uint32_t apicbase;
 163     uint8_t id; /* legacy APIC ID */
 164     uint32_t initial_apic_id;
 165     uint8_t version;
 166     uint8_t arb_id;
 167     uint8_t tpr;
 168     uint32_t spurious_vec;
 169     uint8_t log_dest;
 170     uint8_t dest_mode;
 171     uint32_t isr[8];  /* in service register */
 172     uint32_t tmr[8];  /* trigger mode register */
 173     uint32_t irr[8]; /* interrupt request register */
 174     uint32_t lvt[APIC_LVT_NB];
 175     uint32_t esr; /* error register */
 176     uint32_t icr[2];
 177
 178     uint32_t divide_conf;
 179     int count_shift;
 180     uint32_t initial_count;
 181     int64_t initial_count_load_time;
 182     int64_t next_time;
 183     QEMUTimer *timer;
 184     int64_t timer_expiry;
 185     int sipi_vector;
 186     int wait_for_sipi;
 187
 188     uint32_t vapic_control;
 189     DeviceState *vapic;
 190     hwaddr vapic_paddr; /* note: persistence via kvmvapic */
 191     bool legacy_instance_id;
 192     uint32_t extended_log_dest;
 193 };
 194
 195 typedef struct VAPICState {
 196     uint8_t tpr;
 197     uint8_t isr;
 198     uint8_t zero;
 199     uint8_t irr;
 200     uint8_t enabled;
 201 } QEMU_PACKED VAPICState;
 202
 203 extern bool apic_report_tpr_access;
 204
 205 bool apic_next_timer(APICCommonState *s, int64_t current_time);
 206 void apic_enable_tpr_access_reporting(DeviceState *d, bool enable);
 207 void apic_enable_vapic(DeviceState *d, hwaddr paddr);
 208
 209 void vapic_report_tpr_access(DeviceState *dev, CPUState *cpu, target_ulong ip,
 210                              TPRAccess access);
 211
 212 int apic_get_ppr(APICCommonState *s);
 213 uint32_t apic_get_current_count(APICCommonState *s);
 214
 215 static inline void apic_set_bit(uint32_t *tab, int index)
 216 {
 217     int i, mask;
 218     i = index >> 5;
 219     mask = 1 << (index & 0x1f);
 220     tab[i] |= mask;
 221 }
 222
 223 static inline int apic_get_bit(uint32_t *tab, int index)
 224 {
 225     int i, mask;
 226     i = index >> 5;
 227     mask = 1 << (index & 0x1f);
 228     return !!(tab[i] & mask);
 229 }
 230
 231 APICCommonClass *apic_get_class(Error **errp);
 232
 233 #endif /* QEMU_APIC_INTERNAL_H */