Andreas Färber | 23b96cd | 2010-12-25 05:29:37 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU Intel 82374 emulation (Enhanced DMA controller) |
| 3 | * |
| 4 | * Copyright (c) 2010 Hervé Poussineau |
| 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 | #include "isa.h" |
| 26 | |
| 27 | //#define DEBUG_I82374 |
| 28 | |
| 29 | #ifdef DEBUG_I82374 |
| 30 | #define DPRINTF(fmt, ...) \ |
| 31 | do { fprintf(stderr, "i82374: " fmt , ## __VA_ARGS__); } while (0) |
| 32 | #else |
| 33 | #define DPRINTF(fmt, ...) \ |
| 34 | do {} while (0) |
| 35 | #endif |
| 36 | #define BADF(fmt, ...) \ |
| 37 | do { fprintf(stderr, "i82374 ERROR: " fmt , ## __VA_ARGS__); } while (0) |
| 38 | |
| 39 | typedef struct I82374State { |
| 40 | uint8_t commands[8]; |
Hervé Poussineau | 049a9f7 | 2012-03-17 15:39:41 +0100 | [diff] [blame] | 41 | qemu_irq out; |
Andreas Färber | 23b96cd | 2010-12-25 05:29:37 +0100 | [diff] [blame] | 42 | } I82374State; |
| 43 | |
| 44 | static const VMStateDescription vmstate_i82374 = { |
| 45 | .name = "i82374", |
| 46 | .version_id = 0, |
| 47 | .minimum_version_id = 0, |
| 48 | .fields = (VMStateField[]) { |
| 49 | VMSTATE_UINT8_ARRAY(commands, I82374State, 8), |
| 50 | VMSTATE_END_OF_LIST() |
| 51 | }, |
| 52 | }; |
| 53 | |
| 54 | static uint32_t i82374_read_isr(void *opaque, uint32_t nport) |
| 55 | { |
| 56 | uint32_t val = 0; |
| 57 | |
| 58 | BADF("%s: %08x\n", __func__, nport); |
| 59 | |
| 60 | DPRINTF("%s: %08x=%08x\n", __func__, nport, val); |
| 61 | return val; |
| 62 | } |
| 63 | |
| 64 | static void i82374_write_command(void *opaque, uint32_t nport, uint32_t data) |
| 65 | { |
| 66 | DPRINTF("%s: %08x=%08x\n", __func__, nport, data); |
| 67 | |
| 68 | if (data != 0x42) { |
| 69 | /* Not Stop S/G command */ |
| 70 | BADF("%s: %08x=%08x\n", __func__, nport, data); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | static uint32_t i82374_read_status(void *opaque, uint32_t nport) |
| 75 | { |
| 76 | uint32_t val = 0; |
| 77 | |
| 78 | BADF("%s: %08x\n", __func__, nport); |
| 79 | |
| 80 | DPRINTF("%s: %08x=%08x\n", __func__, nport, val); |
| 81 | return val; |
| 82 | } |
| 83 | |
| 84 | static void i82374_write_descriptor(void *opaque, uint32_t nport, uint32_t data) |
| 85 | { |
| 86 | DPRINTF("%s: %08x=%08x\n", __func__, nport, data); |
| 87 | |
| 88 | BADF("%s: %08x=%08x\n", __func__, nport, data); |
| 89 | } |
| 90 | |
| 91 | static uint32_t i82374_read_descriptor(void *opaque, uint32_t nport) |
| 92 | { |
| 93 | uint32_t val = 0; |
| 94 | |
| 95 | BADF("%s: %08x\n", __func__, nport); |
| 96 | |
| 97 | DPRINTF("%s: %08x=%08x\n", __func__, nport, val); |
| 98 | return val; |
| 99 | } |
| 100 | |
| 101 | static void i82374_init(I82374State *s) |
| 102 | { |
Hervé Poussineau | 049a9f7 | 2012-03-17 15:39:41 +0100 | [diff] [blame] | 103 | DMA_init(1, &s->out); |
Andreas Färber | 23b96cd | 2010-12-25 05:29:37 +0100 | [diff] [blame] | 104 | memset(s->commands, 0, sizeof(s->commands)); |
| 105 | } |
| 106 | |
| 107 | typedef struct ISAi82374State { |
| 108 | ISADevice dev; |
| 109 | uint32_t iobase; |
| 110 | I82374State state; |
| 111 | } ISAi82374State; |
| 112 | |
| 113 | static const VMStateDescription vmstate_isa_i82374 = { |
| 114 | .name = "isa-i82374", |
| 115 | .version_id = 0, |
| 116 | .minimum_version_id = 0, |
| 117 | .fields = (VMStateField[]) { |
| 118 | VMSTATE_STRUCT(state, ISAi82374State, 0, vmstate_i82374, I82374State), |
| 119 | VMSTATE_END_OF_LIST() |
| 120 | }, |
| 121 | }; |
| 122 | |
| 123 | static int i82374_isa_init(ISADevice *dev) |
| 124 | { |
| 125 | ISAi82374State *isa = DO_UPCAST(ISAi82374State, dev, dev); |
| 126 | I82374State *s = &isa->state; |
| 127 | |
| 128 | register_ioport_read(isa->iobase + 0x0A, 1, 1, i82374_read_isr, s); |
| 129 | register_ioport_write(isa->iobase + 0x10, 8, 1, i82374_write_command, s); |
| 130 | register_ioport_read(isa->iobase + 0x18, 8, 1, i82374_read_status, s); |
| 131 | register_ioport_write(isa->iobase + 0x20, 0x20, 1, i82374_write_descriptor, s); |
| 132 | register_ioport_read(isa->iobase + 0x20, 0x20, 1, i82374_read_descriptor, s); |
| 133 | |
| 134 | i82374_init(s); |
| 135 | |
Hervé Poussineau | 049a9f7 | 2012-03-17 15:39:41 +0100 | [diff] [blame] | 136 | qdev_init_gpio_out(&dev->qdev, &s->out, 1); |
| 137 | |
Andreas Färber | 23b96cd | 2010-12-25 05:29:37 +0100 | [diff] [blame] | 138 | return 0; |
| 139 | } |
| 140 | |
Anthony Liguori | 39bffca | 2011-12-07 21:34:16 -0600 | [diff] [blame] | 141 | static Property i82374_properties[] = { |
| 142 | DEFINE_PROP_HEX32("iobase", ISAi82374State, iobase, 0x400), |
| 143 | DEFINE_PROP_END_OF_LIST() |
| 144 | }; |
| 145 | |
Anthony Liguori | 8f04ee0 | 2011-12-04 11:52:49 -0600 | [diff] [blame] | 146 | static void i82374_class_init(ObjectClass *klass, void *data) |
| 147 | { |
| 148 | ISADeviceClass *k = ISA_DEVICE_CLASS(klass); |
Anthony Liguori | 39bffca | 2011-12-07 21:34:16 -0600 | [diff] [blame] | 149 | DeviceClass *dc = DEVICE_CLASS(klass); |
Anthony Liguori | 8f04ee0 | 2011-12-04 11:52:49 -0600 | [diff] [blame] | 150 | |
Anthony Liguori | 39bffca | 2011-12-07 21:34:16 -0600 | [diff] [blame] | 151 | k->init = i82374_isa_init; |
| 152 | dc->vmsd = &vmstate_isa_i82374; |
| 153 | dc->props = i82374_properties; |
Anthony Liguori | 8f04ee0 | 2011-12-04 11:52:49 -0600 | [diff] [blame] | 154 | } |
| 155 | |
Anthony Liguori | 39bffca | 2011-12-07 21:34:16 -0600 | [diff] [blame] | 156 | static TypeInfo i82374_isa_info = { |
Anthony Liguori | 8f04ee0 | 2011-12-04 11:52:49 -0600 | [diff] [blame] | 157 | .name = "i82374", |
Anthony Liguori | 39bffca | 2011-12-07 21:34:16 -0600 | [diff] [blame] | 158 | .parent = TYPE_ISA_DEVICE, |
| 159 | .instance_size = sizeof(ISAi82374State), |
Anthony Liguori | 8f04ee0 | 2011-12-04 11:52:49 -0600 | [diff] [blame] | 160 | .class_init = i82374_class_init, |
Andreas Färber | 23b96cd | 2010-12-25 05:29:37 +0100 | [diff] [blame] | 161 | }; |
| 162 | |
Andreas Färber | 83f7d43 | 2012-02-09 15:20:55 +0100 | [diff] [blame] | 163 | static void i82374_register_types(void) |
Andreas Färber | 23b96cd | 2010-12-25 05:29:37 +0100 | [diff] [blame] | 164 | { |
Anthony Liguori | 39bffca | 2011-12-07 21:34:16 -0600 | [diff] [blame] | 165 | type_register_static(&i82374_isa_info); |
Andreas Färber | 23b96cd | 2010-12-25 05:29:37 +0100 | [diff] [blame] | 166 | } |
| 167 | |
Andreas Färber | 83f7d43 | 2012-02-09 15:20:55 +0100 | [diff] [blame] | 168 | type_init(i82374_register_types) |