root / hw / ide / pci.c @ a4c75a21
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1 | 977e1244 | Gerd Hoffmann | /*
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2 | 977e1244 | Gerd Hoffmann | * QEMU IDE Emulation: PCI Bus support.
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3 | 977e1244 | Gerd Hoffmann | *
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4 | 977e1244 | Gerd Hoffmann | * Copyright (c) 2003 Fabrice Bellard
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5 | 977e1244 | Gerd Hoffmann | * Copyright (c) 2006 Openedhand Ltd.
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6 | 977e1244 | Gerd Hoffmann | *
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7 | 977e1244 | Gerd Hoffmann | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | 977e1244 | Gerd Hoffmann | * of this software and associated documentation files (the "Software"), to deal
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9 | 977e1244 | Gerd Hoffmann | * in the Software without restriction, including without limitation the rights
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10 | 977e1244 | Gerd Hoffmann | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | 977e1244 | Gerd Hoffmann | * copies of the Software, and to permit persons to whom the Software is
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12 | 977e1244 | Gerd Hoffmann | * furnished to do so, subject to the following conditions:
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13 | 977e1244 | Gerd Hoffmann | *
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14 | 977e1244 | Gerd Hoffmann | * The above copyright notice and this permission notice shall be included in
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15 | 977e1244 | Gerd Hoffmann | * all copies or substantial portions of the Software.
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16 | 977e1244 | Gerd Hoffmann | *
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17 | 977e1244 | Gerd Hoffmann | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | 977e1244 | Gerd Hoffmann | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | 977e1244 | Gerd Hoffmann | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | 977e1244 | Gerd Hoffmann | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | 977e1244 | Gerd Hoffmann | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | 977e1244 | Gerd Hoffmann | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | 977e1244 | Gerd Hoffmann | * THE SOFTWARE.
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24 | 977e1244 | Gerd Hoffmann | */
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25 | 59f2a787 | Gerd Hoffmann | #include <hw/hw.h> |
26 | 59f2a787 | Gerd Hoffmann | #include <hw/pc.h> |
27 | 59f2a787 | Gerd Hoffmann | #include <hw/pci.h> |
28 | feef3102 | Gerd Hoffmann | #include <hw/isa.h> |
29 | 977e1244 | Gerd Hoffmann | #include "block.h" |
30 | 977e1244 | Gerd Hoffmann | #include "block_int.h" |
31 | 977e1244 | Gerd Hoffmann | #include "sysemu.h" |
32 | 977e1244 | Gerd Hoffmann | #include "dma.h" |
33 | 59f2a787 | Gerd Hoffmann | |
34 | 65c0f135 | Juan Quintela | #include <hw/ide/pci.h> |
35 | 977e1244 | Gerd Hoffmann | |
36 | 3e7e1558 | Juan Quintela | void bmdma_cmd_writeb(void *opaque, uint32_t addr, uint32_t val) |
37 | 977e1244 | Gerd Hoffmann | { |
38 | 977e1244 | Gerd Hoffmann | BMDMAState *bm = opaque; |
39 | 977e1244 | Gerd Hoffmann | #ifdef DEBUG_IDE
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40 | 977e1244 | Gerd Hoffmann | printf("%s: 0x%08x\n", __func__, val);
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41 | 977e1244 | Gerd Hoffmann | #endif
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42 | 977e1244 | Gerd Hoffmann | if (!(val & BM_CMD_START)) {
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43 | 953844d1 | Andrea Arcangeli | /*
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44 | 953844d1 | Andrea Arcangeli | * We can't cancel Scatter Gather DMA in the middle of the
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45 | 953844d1 | Andrea Arcangeli | * operation or a partial (not full) DMA transfer would reach
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46 | 953844d1 | Andrea Arcangeli | * the storage so we wait for completion instead (we beahve
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47 | 953844d1 | Andrea Arcangeli | * like if the DMA was completed by the time the guest trying
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48 | 953844d1 | Andrea Arcangeli | * to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
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49 | 953844d1 | Andrea Arcangeli | * set).
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50 | 953844d1 | Andrea Arcangeli | *
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51 | 953844d1 | Andrea Arcangeli | * In the future we'll be able to safely cancel the I/O if the
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52 | 953844d1 | Andrea Arcangeli | * whole DMA operation will be submitted to disk with a single
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53 | 953844d1 | Andrea Arcangeli | * aio operation with preadv/pwritev.
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54 | 953844d1 | Andrea Arcangeli | */
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55 | 953844d1 | Andrea Arcangeli | if (bm->aiocb) {
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56 | 953844d1 | Andrea Arcangeli | qemu_aio_flush(); |
57 | 953844d1 | Andrea Arcangeli | #ifdef DEBUG_IDE
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58 | 953844d1 | Andrea Arcangeli | if (bm->aiocb)
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59 | 953844d1 | Andrea Arcangeli | printf("ide_dma_cancel: aiocb still pending");
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60 | 953844d1 | Andrea Arcangeli | if (bm->status & BM_STATUS_DMAING)
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61 | 953844d1 | Andrea Arcangeli | printf("ide_dma_cancel: BM_STATUS_DMAING still pending");
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62 | 953844d1 | Andrea Arcangeli | #endif
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63 | 953844d1 | Andrea Arcangeli | } |
64 | 977e1244 | Gerd Hoffmann | bm->cmd = val & 0x09;
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65 | 977e1244 | Gerd Hoffmann | } else {
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66 | 977e1244 | Gerd Hoffmann | if (!(bm->status & BM_STATUS_DMAING)) {
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67 | 977e1244 | Gerd Hoffmann | bm->status |= BM_STATUS_DMAING; |
68 | 977e1244 | Gerd Hoffmann | /* start dma transfer if possible */
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69 | 977e1244 | Gerd Hoffmann | if (bm->dma_cb)
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70 | 977e1244 | Gerd Hoffmann | bm->dma_cb(bm, 0);
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71 | 977e1244 | Gerd Hoffmann | } |
72 | 977e1244 | Gerd Hoffmann | bm->cmd = val & 0x09;
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73 | 977e1244 | Gerd Hoffmann | } |
74 | 977e1244 | Gerd Hoffmann | } |
75 | 977e1244 | Gerd Hoffmann | |
76 | 3e7e1558 | Juan Quintela | uint32_t bmdma_addr_readb(void *opaque, uint32_t addr)
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77 | 977e1244 | Gerd Hoffmann | { |
78 | 977e1244 | Gerd Hoffmann | BMDMAState *bm = opaque; |
79 | 977e1244 | Gerd Hoffmann | uint32_t val; |
80 | 977e1244 | Gerd Hoffmann | val = (bm->addr >> ((addr & 3) * 8)) & 0xff; |
81 | 977e1244 | Gerd Hoffmann | #ifdef DEBUG_IDE
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82 | 977e1244 | Gerd Hoffmann | printf("%s: 0x%08x\n", __func__, val);
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83 | 977e1244 | Gerd Hoffmann | #endif
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84 | 977e1244 | Gerd Hoffmann | return val;
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85 | 977e1244 | Gerd Hoffmann | } |
86 | 977e1244 | Gerd Hoffmann | |
87 | 3e7e1558 | Juan Quintela | void bmdma_addr_writeb(void *opaque, uint32_t addr, uint32_t val) |
88 | 977e1244 | Gerd Hoffmann | { |
89 | 977e1244 | Gerd Hoffmann | BMDMAState *bm = opaque; |
90 | 977e1244 | Gerd Hoffmann | int shift = (addr & 3) * 8; |
91 | 977e1244 | Gerd Hoffmann | #ifdef DEBUG_IDE
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92 | 977e1244 | Gerd Hoffmann | printf("%s: 0x%08x\n", __func__, val);
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93 | 977e1244 | Gerd Hoffmann | #endif
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94 | 977e1244 | Gerd Hoffmann | bm->addr &= ~(0xFF << shift);
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95 | 977e1244 | Gerd Hoffmann | bm->addr |= ((val & 0xFF) << shift) & ~3; |
96 | 977e1244 | Gerd Hoffmann | bm->cur_addr = bm->addr; |
97 | 977e1244 | Gerd Hoffmann | } |
98 | 977e1244 | Gerd Hoffmann | |
99 | 3e7e1558 | Juan Quintela | uint32_t bmdma_addr_readw(void *opaque, uint32_t addr)
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100 | 977e1244 | Gerd Hoffmann | { |
101 | 977e1244 | Gerd Hoffmann | BMDMAState *bm = opaque; |
102 | 977e1244 | Gerd Hoffmann | uint32_t val; |
103 | 977e1244 | Gerd Hoffmann | val = (bm->addr >> ((addr & 3) * 8)) & 0xffff; |
104 | 977e1244 | Gerd Hoffmann | #ifdef DEBUG_IDE
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105 | 977e1244 | Gerd Hoffmann | printf("%s: 0x%08x\n", __func__, val);
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106 | 977e1244 | Gerd Hoffmann | #endif
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107 | 977e1244 | Gerd Hoffmann | return val;
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108 | 977e1244 | Gerd Hoffmann | } |
109 | 977e1244 | Gerd Hoffmann | |
110 | 3e7e1558 | Juan Quintela | void bmdma_addr_writew(void *opaque, uint32_t addr, uint32_t val) |
111 | 977e1244 | Gerd Hoffmann | { |
112 | 977e1244 | Gerd Hoffmann | BMDMAState *bm = opaque; |
113 | 977e1244 | Gerd Hoffmann | int shift = (addr & 3) * 8; |
114 | 977e1244 | Gerd Hoffmann | #ifdef DEBUG_IDE
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115 | 977e1244 | Gerd Hoffmann | printf("%s: 0x%08x\n", __func__, val);
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116 | 977e1244 | Gerd Hoffmann | #endif
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117 | 977e1244 | Gerd Hoffmann | bm->addr &= ~(0xFFFF << shift);
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118 | 977e1244 | Gerd Hoffmann | bm->addr |= ((val & 0xFFFF) << shift) & ~3; |
119 | 977e1244 | Gerd Hoffmann | bm->cur_addr = bm->addr; |
120 | 977e1244 | Gerd Hoffmann | } |
121 | 977e1244 | Gerd Hoffmann | |
122 | 3e7e1558 | Juan Quintela | uint32_t bmdma_addr_readl(void *opaque, uint32_t addr)
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123 | 977e1244 | Gerd Hoffmann | { |
124 | 977e1244 | Gerd Hoffmann | BMDMAState *bm = opaque; |
125 | 977e1244 | Gerd Hoffmann | uint32_t val; |
126 | 977e1244 | Gerd Hoffmann | val = bm->addr; |
127 | 977e1244 | Gerd Hoffmann | #ifdef DEBUG_IDE
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128 | 977e1244 | Gerd Hoffmann | printf("%s: 0x%08x\n", __func__, val);
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129 | 977e1244 | Gerd Hoffmann | #endif
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130 | 977e1244 | Gerd Hoffmann | return val;
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131 | 977e1244 | Gerd Hoffmann | } |
132 | 977e1244 | Gerd Hoffmann | |
133 | 3e7e1558 | Juan Quintela | void bmdma_addr_writel(void *opaque, uint32_t addr, uint32_t val) |
134 | 977e1244 | Gerd Hoffmann | { |
135 | 977e1244 | Gerd Hoffmann | BMDMAState *bm = opaque; |
136 | 977e1244 | Gerd Hoffmann | #ifdef DEBUG_IDE
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137 | 977e1244 | Gerd Hoffmann | printf("%s: 0x%08x\n", __func__, val);
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138 | 977e1244 | Gerd Hoffmann | #endif
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139 | 977e1244 | Gerd Hoffmann | bm->addr = val & ~3;
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140 | 977e1244 | Gerd Hoffmann | bm->cur_addr = bm->addr; |
141 | 977e1244 | Gerd Hoffmann | } |
142 | 977e1244 | Gerd Hoffmann | |
143 | 5ee84c33 | Juan Quintela | static bool ide_bmdma_current_needed(void *opaque) |
144 | 5ee84c33 | Juan Quintela | { |
145 | 5ee84c33 | Juan Quintela | BMDMAState *bm = opaque; |
146 | 5ee84c33 | Juan Quintela | |
147 | 5ee84c33 | Juan Quintela | return (bm->cur_prd_len != 0); |
148 | 5ee84c33 | Juan Quintela | } |
149 | 5ee84c33 | Juan Quintela | |
150 | 5ee84c33 | Juan Quintela | static const VMStateDescription vmstate_bmdma_current = { |
151 | 5ee84c33 | Juan Quintela | .name = "ide bmdma_current",
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152 | 5ee84c33 | Juan Quintela | .version_id = 1,
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153 | 5ee84c33 | Juan Quintela | .minimum_version_id = 1,
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154 | 5ee84c33 | Juan Quintela | .minimum_version_id_old = 1,
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155 | 5ee84c33 | Juan Quintela | .fields = (VMStateField []) { |
156 | 5ee84c33 | Juan Quintela | VMSTATE_UINT32(cur_addr, BMDMAState), |
157 | 5ee84c33 | Juan Quintela | VMSTATE_UINT32(cur_prd_last, BMDMAState), |
158 | 5ee84c33 | Juan Quintela | VMSTATE_UINT32(cur_prd_addr, BMDMAState), |
159 | 5ee84c33 | Juan Quintela | VMSTATE_UINT32(cur_prd_len, BMDMAState), |
160 | 5ee84c33 | Juan Quintela | VMSTATE_END_OF_LIST() |
161 | 5ee84c33 | Juan Quintela | } |
162 | 5ee84c33 | Juan Quintela | }; |
163 | 5ee84c33 | Juan Quintela | |
164 | 5ee84c33 | Juan Quintela | |
165 | 407a4f30 | Juan Quintela | static const VMStateDescription vmstate_bmdma = { |
166 | 407a4f30 | Juan Quintela | .name = "ide bmdma",
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167 | 57338424 | Juan Quintela | .version_id = 3,
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168 | 407a4f30 | Juan Quintela | .minimum_version_id = 0,
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169 | 407a4f30 | Juan Quintela | .minimum_version_id_old = 0,
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170 | 407a4f30 | Juan Quintela | .fields = (VMStateField []) { |
171 | 407a4f30 | Juan Quintela | VMSTATE_UINT8(cmd, BMDMAState), |
172 | 407a4f30 | Juan Quintela | VMSTATE_UINT8(status, BMDMAState), |
173 | 407a4f30 | Juan Quintela | VMSTATE_UINT32(addr, BMDMAState), |
174 | 407a4f30 | Juan Quintela | VMSTATE_INT64(sector_num, BMDMAState), |
175 | 407a4f30 | Juan Quintela | VMSTATE_UINT32(nsector, BMDMAState), |
176 | 407a4f30 | Juan Quintela | VMSTATE_UINT8(unit, BMDMAState), |
177 | 407a4f30 | Juan Quintela | VMSTATE_END_OF_LIST() |
178 | 5ee84c33 | Juan Quintela | }, |
179 | 5ee84c33 | Juan Quintela | .subsections = (VMStateSubsection []) { |
180 | 5ee84c33 | Juan Quintela | { |
181 | 5ee84c33 | Juan Quintela | .vmsd = &vmstate_bmdma_current, |
182 | 5ee84c33 | Juan Quintela | .needed = ide_bmdma_current_needed, |
183 | 5ee84c33 | Juan Quintela | }, { |
184 | 5ee84c33 | Juan Quintela | /* empty */
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185 | 5ee84c33 | Juan Quintela | } |
186 | 977e1244 | Gerd Hoffmann | } |
187 | 407a4f30 | Juan Quintela | }; |
188 | 977e1244 | Gerd Hoffmann | |
189 | 407a4f30 | Juan Quintela | static int ide_pci_post_load(void *opaque, int version_id) |
190 | 977e1244 | Gerd Hoffmann | { |
191 | 977e1244 | Gerd Hoffmann | PCIIDEState *d = opaque; |
192 | 407a4f30 | Juan Quintela | int i;
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193 | 977e1244 | Gerd Hoffmann | |
194 | 977e1244 | Gerd Hoffmann | for(i = 0; i < 2; i++) { |
195 | 407a4f30 | Juan Quintela | /* current versions always store 0/1, but older version
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196 | 407a4f30 | Juan Quintela | stored bigger values. We only need last bit */
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197 | 407a4f30 | Juan Quintela | d->bmdma[i].unit &= 1;
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198 | 977e1244 | Gerd Hoffmann | } |
199 | 977e1244 | Gerd Hoffmann | return 0; |
200 | 977e1244 | Gerd Hoffmann | } |
201 | 977e1244 | Gerd Hoffmann | |
202 | 407a4f30 | Juan Quintela | const VMStateDescription vmstate_ide_pci = {
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203 | 407a4f30 | Juan Quintela | .name = "ide",
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204 | 57338424 | Juan Quintela | .version_id = 3,
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205 | 407a4f30 | Juan Quintela | .minimum_version_id = 0,
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206 | 407a4f30 | Juan Quintela | .minimum_version_id_old = 0,
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207 | 407a4f30 | Juan Quintela | .post_load = ide_pci_post_load, |
208 | 407a4f30 | Juan Quintela | .fields = (VMStateField []) { |
209 | 407a4f30 | Juan Quintela | VMSTATE_PCI_DEVICE(dev, PCIIDEState), |
210 | 407a4f30 | Juan Quintela | VMSTATE_STRUCT_ARRAY(bmdma, PCIIDEState, 2, 0, |
211 | 407a4f30 | Juan Quintela | vmstate_bmdma, BMDMAState), |
212 | 407a4f30 | Juan Quintela | VMSTATE_IDE_BUS_ARRAY(bus, PCIIDEState, 2),
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213 | 407a4f30 | Juan Quintela | VMSTATE_IDE_DRIVES(bus[0].ifs, PCIIDEState),
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214 | 407a4f30 | Juan Quintela | VMSTATE_IDE_DRIVES(bus[1].ifs, PCIIDEState),
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215 | 407a4f30 | Juan Quintela | VMSTATE_END_OF_LIST() |
216 | 407a4f30 | Juan Quintela | } |
217 | 407a4f30 | Juan Quintela | }; |
218 | 407a4f30 | Juan Quintela | |
219 | 3e7e1558 | Juan Quintela | void pci_ide_create_devs(PCIDevice *dev, DriveInfo **hd_table)
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220 | feef3102 | Gerd Hoffmann | { |
221 | feef3102 | Gerd Hoffmann | PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev); |
222 | feef3102 | Gerd Hoffmann | static const int bus[4] = { 0, 0, 1, 1 }; |
223 | feef3102 | Gerd Hoffmann | static const int unit[4] = { 0, 1, 0, 1 }; |
224 | feef3102 | Gerd Hoffmann | int i;
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225 | feef3102 | Gerd Hoffmann | |
226 | feef3102 | Gerd Hoffmann | for (i = 0; i < 4; i++) { |
227 | feef3102 | Gerd Hoffmann | if (hd_table[i] == NULL) |
228 | feef3102 | Gerd Hoffmann | continue;
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229 | 1f850f10 | Gerd Hoffmann | ide_create_drive(d->bus+bus[i], unit[i], hd_table[i]); |
230 | feef3102 | Gerd Hoffmann | } |
231 | feef3102 | Gerd Hoffmann | } |