LXR qemu/hw/intc/ioapic

   1/*
   2 *  IOAPIC emulation logic - internal interfaces
   3 *
   4 *  Copyright (c) 2004-2005 Fabrice Bellard
   5 *  Copyright (c) 2009      Xiantao Zhang, Intel
   6 *  Copyright (c) 2011 Jan Kiszka, Siemens AG
   7 *
   8 * This library is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU Lesser General Public
  10 * License as published by the Free Software Foundation; either
  11 * version 2.1 of the License, or (at your option) any later version.
  12 *
  13 * This library is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 * Lesser General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU Lesser General Public
  19 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22#ifndef HW_INTC_IOAPIC_INTERNAL_H
  23#define HW_INTC_IOAPIC_INTERNAL_H
  24
  25#include "exec/memory.h"
  26#include "hw/intc/ioapic.h"
  27#include "hw/sysbus.h"
  28#include "qemu/notify.h"
  29#include "qom/object.h"
  30
  31#define MAX_IOAPICS                     2
  32
  33#define IOAPIC_LVT_DEST_SHIFT           56
  34#define IOAPIC_LVT_DEST_IDX_SHIFT       48
  35#define IOAPIC_LVT_MASKED_SHIFT         16
  36#define IOAPIC_LVT_TRIGGER_MODE_SHIFT   15
  37#define IOAPIC_LVT_REMOTE_IRR_SHIFT     14
  38#define IOAPIC_LVT_POLARITY_SHIFT       13
  39#define IOAPIC_LVT_DELIV_STATUS_SHIFT   12
  40#define IOAPIC_LVT_DEST_MODE_SHIFT      11
  41#define IOAPIC_LVT_DELIV_MODE_SHIFT     8
  42
  43#define IOAPIC_LVT_MASKED               (1 << IOAPIC_LVT_MASKED_SHIFT)
  44#define IOAPIC_LVT_TRIGGER_MODE         (1 << IOAPIC_LVT_TRIGGER_MODE_SHIFT)
  45#define IOAPIC_LVT_REMOTE_IRR           (1 << IOAPIC_LVT_REMOTE_IRR_SHIFT)
  46#define IOAPIC_LVT_POLARITY             (1 << IOAPIC_LVT_POLARITY_SHIFT)
  47#define IOAPIC_LVT_DELIV_STATUS         (1 << IOAPIC_LVT_DELIV_STATUS_SHIFT)
  48#define IOAPIC_LVT_DEST_MODE            (1 << IOAPIC_LVT_DEST_MODE_SHIFT)
  49#define IOAPIC_LVT_DELIV_MODE           (7 << IOAPIC_LVT_DELIV_MODE_SHIFT)
  50
  51/* Bits that are read-only for IOAPIC entry */
  52#define IOAPIC_RO_BITS                  (IOAPIC_LVT_REMOTE_IRR | \
  53                                         IOAPIC_LVT_DELIV_STATUS)
  54#define IOAPIC_RW_BITS                  (~(uint64_t)IOAPIC_RO_BITS)
  55
  56#define IOAPIC_TRIGGER_EDGE             0
  57#define IOAPIC_TRIGGER_LEVEL            1
  58
  59/*io{apic,sapic} delivery mode*/
  60#define IOAPIC_DM_FIXED                 0x0
  61#define IOAPIC_DM_LOWEST_PRIORITY       0x1
  62#define IOAPIC_DM_PMI                   0x2
  63#define IOAPIC_DM_NMI                   0x4
  64#define IOAPIC_DM_INIT                  0x5
  65#define IOAPIC_DM_SIPI                  0x6
  66#define IOAPIC_DM_EXTINT                0x7
  67#define IOAPIC_DM_MASK                  0x7
  68
  69#define IOAPIC_VECTOR_MASK              0xff
  70
  71#define IOAPIC_IOREGSEL                 0x00
  72#define IOAPIC_IOWIN                    0x10
  73#define IOAPIC_EOI                      0x40
  74
  75#define IOAPIC_REG_ID                   0x00
  76#define IOAPIC_REG_VER                  0x01
  77#define IOAPIC_REG_ARB                  0x02
  78#define IOAPIC_REG_REDTBL_BASE          0x10
  79#define IOAPIC_ID                       0x00
  80
  81#define IOAPIC_ID_SHIFT                 24
  82#define IOAPIC_ID_MASK                  0xf
  83
  84#define IOAPIC_VER_ENTRIES_SHIFT        16
  85
  86
  87#define TYPE_IOAPIC_COMMON "ioapic-common"
  88OBJECT_DECLARE_TYPE(IOAPICCommonState, IOAPICCommonClass, IOAPIC_COMMON)
  89
  90struct IOAPICCommonClass {
  91    SysBusDeviceClass parent_class;
  92
  93    DeviceRealize realize;
  94    DeviceUnrealize unrealize;
  95    void (*pre_save)(IOAPICCommonState *s);
  96    void (*post_load)(IOAPICCommonState *s);
  97};
  98
  99struct IOAPICCommonState {
 100    SysBusDevice busdev;
 101    MemoryRegion io_memory;
 102    uint8_t id;
 103    uint8_t ioregsel;
 104    uint32_t irr;
 105    uint64_t ioredtbl[IOAPIC_NUM_PINS];
 106    Notifier machine_done;
 107    uint8_t version;
 108    uint64_t irq_count[IOAPIC_NUM_PINS];
 109    int irq_level[IOAPIC_NUM_PINS];
 110    int irq_eoi[IOAPIC_NUM_PINS];
 111    QEMUTimer *delayed_ioapic_service_timer;
 112};
 113
 114void ioapic_reset_common(DeviceState *dev);
 115
 116void ioapic_stat_update_irq(IOAPICCommonState *s, int irq, int level);
 117
 118#endif /* HW_INTC_IOAPIC_INTERNAL_H */
 119