qemu/include/hw/i386/apic_internal.h
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   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 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
  28/* APIC Local Vector Table */
  29#define APIC_LVT_TIMER                  0
  30#define APIC_LVT_THERMAL                1
  31#define APIC_LVT_PERFORM                2
  32#define APIC_LVT_LINT0                  3
  33#define APIC_LVT_LINT1                  4
  34#define APIC_LVT_ERROR                  5
  35#define APIC_LVT_NB                     6
  36
  37/* APIC delivery modes */
  38#define APIC_DM_FIXED                   0
  39#define APIC_DM_LOWPRI                  1
  40#define APIC_DM_SMI                     2
  41#define APIC_DM_NMI                     4
  42#define APIC_DM_INIT                    5
  43#define APIC_DM_SIPI                    6
  44#define APIC_DM_EXTINT                  7
  45
  46/* APIC destination mode */
  47#define APIC_DESTMODE_FLAT              0xf
  48#define APIC_DESTMODE_CLUSTER           1
  49
  50#define APIC_TRIGGER_EDGE               0
  51#define APIC_TRIGGER_LEVEL              1
  52
  53#define APIC_VECTOR_MASK                0xff
  54#define APIC_DCR_MASK                   0xf
  55
  56#define APIC_LVT_TIMER_SHIFT            17
  57#define APIC_LVT_MASKED_SHIFT           16
  58#define APIC_LVT_LEVEL_TRIGGER_SHIFT    15
  59#define APIC_LVT_REMOTE_IRR_SHIFT       14
  60#define APIC_LVT_INT_POLARITY_SHIFT     13
  61#define APIC_LVT_DELIV_STS_SHIFT        12
  62#define APIC_LVT_DELIV_MOD_SHIFT        8
  63
  64#define APIC_LVT_TIMER_TSCDEADLINE      (2 << APIC_LVT_TIMER_SHIFT)
  65#define APIC_LVT_TIMER_PERIODIC         (1 << APIC_LVT_TIMER_SHIFT)
  66#define APIC_LVT_MASKED                 (1 << APIC_LVT_MASKED_SHIFT)
  67#define APIC_LVT_LEVEL_TRIGGER          (1 << APIC_LVT_LEVEL_TRIGGER_SHIFT)
  68#define APIC_LVT_REMOTE_IRR             (1 << APIC_LVT_REMOTE_IRR_SHIFT)
  69#define APIC_LVT_INT_POLARITY           (1 << APIC_LVT_INT_POLARITY_SHIFT)
  70#define APIC_LVT_DELIV_STS              (1 << APIC_LVT_DELIV_STS_SHIFT)
  71#define APIC_LVT_DELIV_MOD              (7 << APIC_LVT_DELIV_MOD_SHIFT)
  72
  73#define APIC_ESR_ILL_ADDRESS_SHIFT      7
  74#define APIC_ESR_RECV_ILL_VECT_SHIFT    6
  75#define APIC_ESR_SEND_ILL_VECT_SHIFT    5
  76#define APIC_ESR_RECV_ACCEPT_SHIFT      3
  77#define APIC_ESR_SEND_ACCEPT_SHIFT      2
  78#define APIC_ESR_RECV_CHECK_SUM_SHIFT   1
  79
  80#define APIC_ESR_ILLEGAL_ADDRESS        (1 << APIC_ESR_ILL_ADDRESS_SHIFT)
  81#define APIC_ESR_RECV_ILLEGAL_VECT      (1 << APIC_ESR_RECV_ILL_VECT_SHIFT)
  82#define APIC_ESR_SEND_ILLEGAL_VECT      (1 << APIC_ESR_SEND_ILL_VECT_SHIFT)
  83#define APIC_ESR_RECV_ACCEPT            (1 << APIC_ESR_RECV_ACCEPT_SHIFT)
  84#define APIC_ESR_SEND_ACCEPT            (1 << APIC_ESR_SEND_ACCEPT_SHIFT)
  85#define APIC_ESR_RECV_CHECK_SUM         (1 << APIC_ESR_RECV_CHECK_SUM_SHIFT)
  86#define APIC_ESR_SEND_CHECK_SUM         1
  87
  88#define APIC_ICR_DEST_SHIFT             24
  89#define APIC_ICR_DEST_SHORT_SHIFT       18
  90#define APIC_ICR_TRIGGER_MOD_SHIFT      15
  91#define APIC_ICR_LEVEL_SHIFT            14
  92#define APIC_ICR_DELIV_STS_SHIFT        12
  93#define APIC_ICR_DEST_MOD_SHIFT         11
  94#define APIC_ICR_DELIV_MOD_SHIFT        8
  95
  96#define APIC_ICR_DEST_SHORT             (3 << APIC_ICR_DEST_SHORT_SHIFT)
  97#define APIC_ICR_TRIGGER_MOD            (1 << APIC_ICR_TRIGGER_MOD_SHIFT)
  98#define APIC_ICR_LEVEL                  (1 << APIC_ICR_LEVEL_SHIFT)
  99#define APIC_ICR_DELIV_STS              (1 << APIC_ICR_DELIV_STS_SHIFT)
 100#define APIC_ICR_DEST_MOD               (1 << APIC_ICR_DEST_MOD_SHIFT)
 101#define APIC_ICR_DELIV_MOD              (7 << APIC_ICR_DELIV_MOD_SHIFT)
 102
 103#define APIC_PR_CLASS_SHIFT             4
 104#define APIC_PR_SUB_CLASS               0xf
 105
 106#define APIC_LOGDEST_XAPIC_SHIFT        4
 107#define APIC_LOGDEST_XAPIC_ID           0xf
 108
 109#define APIC_LOGDEST_X2APIC_SHIFT       16
 110#define APIC_LOGDEST_X2APIC_ID          0xffff
 111
 112#define APIC_SPURIO_FOCUS_SHIFT         9
 113#define APIC_SPURIO_ENABLED_SHIFT       8
 114
 115#define APIC_SPURIO_FOCUS               (1 << APIC_SPURIO_FOCUS_SHIFT)
 116#define APIC_SPURIO_ENABLED             (1 << APIC_SPURIO_ENABLED_SHIFT)
 117
 118#define APIC_SV_DIRECTED_IO             (1 << 12)
 119#define APIC_SV_ENABLE                  (1 << 8)
 120
 121#define VAPIC_ENABLE_BIT                0
 122#define VAPIC_ENABLE_MASK               (1 << VAPIC_ENABLE_BIT)
 123
 124typedef struct APICCommonState APICCommonState;
 125
 126#define TYPE_APIC_COMMON "apic-common"
 127#define APIC_COMMON(obj) \
 128     OBJECT_CHECK(APICCommonState, (obj), TYPE_APIC_COMMON)
 129#define APIC_COMMON_CLASS(klass) \
 130     OBJECT_CLASS_CHECK(APICCommonClass, (klass), TYPE_APIC_COMMON)
 131#define APIC_COMMON_GET_CLASS(obj) \
 132     OBJECT_GET_CLASS(APICCommonClass, (obj), TYPE_APIC_COMMON)
 133
 134typedef struct APICCommonClass
 135{
 136    DeviceClass parent_class;
 137
 138    DeviceRealize realize;
 139    DeviceUnrealize unrealize;
 140    void (*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} APICCommonClass;
 154
 155struct 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};
 193
 194typedef struct VAPICState {
 195    uint8_t tpr;
 196    uint8_t isr;
 197    uint8_t zero;
 198    uint8_t irr;
 199    uint8_t enabled;
 200} QEMU_PACKED VAPICState;
 201
 202extern bool apic_report_tpr_access;
 203
 204void apic_report_irq_delivered(int delivered);
 205bool apic_next_timer(APICCommonState *s, int64_t current_time);
 206void apic_enable_tpr_access_reporting(DeviceState *d, bool enable);
 207void apic_enable_vapic(DeviceState *d, hwaddr paddr);
 208
 209void vapic_report_tpr_access(DeviceState *dev, CPUState *cpu, target_ulong ip,
 210                             TPRAccess access);
 211
 212int apic_get_ppr(APICCommonState *s);
 213
 214static inline void apic_set_bit(uint32_t *tab, int index)
 215{
 216    int i, mask;
 217    i = index >> 5;
 218    mask = 1 << (index & 0x1f);
 219    tab[i] |= mask;
 220}
 221
 222static inline int apic_get_bit(uint32_t *tab, int index)
 223{
 224    int i, mask;
 225    i = index >> 5;
 226    mask = 1 << (index & 0x1f);
 227    return !!(tab[i] & mask);
 228}
 229
 230APICCommonClass *apic_get_class(void);
 231
 232#endif /* QEMU_APIC_INTERNAL_H */
 233