projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| d11e859e JK |
1 | /* |
| 2 | * QEMU 8253/8254 - internal interfaces | |
| 3 | * | |
| 4 | * Copyright (c) 2011 Jan Kiszka, Siemens AG | |
| 5 | * | |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 7 | * of this software and associated documentation files (the "Software"), to deal | |
| 8 | * in the Software without restriction, including without limitation the rights | |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| 10 | * copies of the Software, and to permit persons to whom the Software is | |
| 11 | * furnished to do so, subject to the following conditions: | |
| 12 | * | |
| 13 | * The above copyright notice and this permission notice shall be included in | |
| 14 | * all copies or substantial portions of the Software. | |
| 15 | * | |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
| 22 | * THE SOFTWARE. | |
| 23 | */ | |
| 24 | ||
| 25 | #ifndef QEMU_I8254_INTERNAL_H | |
| 26 | #define QEMU_I8254_INTERNAL_H | |
| 27 | ||
| 28 | #include "hw.h" | |
| 29 | #include "pc.h" | |
| 30 | #include "isa.h" | |
| 31 | ||
| 32 | typedef struct PITChannelState { | |
| 33 | int count; /* can be 65536 */ | |
| 34 | uint16_t latched_count; | |
| 35 | uint8_t count_latched; | |
| 36 | uint8_t status_latched; | |
| 37 | uint8_t status; | |
| 38 | uint8_t read_state; | |
| 39 | uint8_t write_state; | |
| 40 | uint8_t write_latch; | |
| 41 | uint8_t rw_mode; | |
| 42 | uint8_t mode; | |
| 43 | uint8_t bcd; /* not supported */ | |
| 44 | uint8_t gate; /* timer start */ | |
| 45 | int64_t count_load_time; | |
| 46 | /* irq handling */ | |
| 47 | int64_t next_transition_time; | |
| 48 | QEMUTimer *irq_timer; | |
| 49 | qemu_irq irq; | |
| 50 | uint32_t irq_disabled; | |
| 51 | } PITChannelState; | |
| 52 | ||
| 53 | typedef struct PITCommonState { | |
| 54 | ISADevice dev; | |
| 55 | MemoryRegion ioports; | |
| 56 | uint32_t iobase; | |
| 57 | PITChannelState channels[3]; | |
| 58 | } PITCommonState; | |
| 59 | ||
| 60 | #define TYPE_PIT_COMMON "pit-common" | |
| 61 | #define PIT_COMMON(obj) \ | |
| 62 | OBJECT_CHECK(PITCommonState, (obj), TYPE_PIT_COMMON) | |
| 63 | #define PIT_COMMON_CLASS(klass) \ | |
| 64 | OBJECT_CLASS_CHECK(PITCommonClass, (klass), TYPE_PIT_COMMON) | |
| 65 | #define PIT_COMMON_GET_CLASS(obj) \ | |
| 66 | OBJECT_GET_CLASS(PITCommonClass, (obj), TYPE_PIT_COMMON) | |
| 67 | ||
| 68 | typedef struct PITCommonClass { | |
| 69 | ISADeviceClass parent_class; | |
| 70 | ||
| 71 | int (*init)(PITCommonState *s); | |
| 72 | void (*set_channel_gate)(PITCommonState *s, PITChannelState *sc, int val); | |
| 73 | void (*get_channel_info)(PITCommonState *s, PITChannelState *sc, | |
| 74 | PITChannelInfo *info); | |
| 75 | void (*pre_save)(PITCommonState *s); | |
| 76 | void (*post_load)(PITCommonState *s); | |
| 77 | } PITCommonClass; | |
| 78 | ||
| 79 | int pit_get_out(PITChannelState *s, int64_t current_time); | |
| 80 | int64_t pit_get_next_transition_time(PITChannelState *s, int64_t current_time); | |
| 81 | void pit_get_channel_info_common(PITCommonState *s, PITChannelState *sc, | |
| 82 | PITChannelInfo *info); | |
| 83 | void pit_reset_common(PITCommonState *s); | |
| 84 | ||
| 85 | #endif /* !QEMU_I8254_INTERNAL_H */ |