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| Rev 1 | Rev 68 | ||
|---|---|---|---|
| Line 69... | Line 69... | ||
| 69 | frames = config.memory_size / FRAME_SIZE; |
69 | frames = config.memory_size / FRAME_SIZE; |
| 70 | frame_bitmap_octets = frames / 8 + (frames % 8 > 0); |
70 | frame_bitmap_octets = frames / 8 + (frames % 8 > 0); |
| 71 | 71 | ||
| 72 | frame_bitmap = (__u8 *) malloc(frame_bitmap_octets); |
72 | frame_bitmap = (__u8 *) malloc(frame_bitmap_octets); |
| 73 | if (!frame_bitmap) |
73 | if (!frame_bitmap) |
| 74 | panic(PANIC "malloc/frame_bitmap\n"); |
74 | panic("malloc/frame_bitmap\n"); |
| 75 | 75 | ||
| 76 | /* |
76 | /* |
| 77 | * Mark all frames free. |
77 | * Mark all frames free. |
| 78 | */ |
78 | */ |
| 79 | memsetb((__address) frame_bitmap, frame_bitmap_octets, 0); |
79 | memsetb((__address) frame_bitmap, frame_bitmap_octets, 0); |
| Line 142... | Line 142... | ||
| 142 | cpu_priority_restore(pri); |
142 | cpu_priority_restore(pri); |
| 143 | if (flags & FRAME_KA) return PA2KA(i*FRAME_SIZE); |
143 | if (flags & FRAME_KA) return PA2KA(i*FRAME_SIZE); |
| 144 | return i*FRAME_SIZE; |
144 | return i*FRAME_SIZE; |
| 145 | } |
145 | } |
| 146 | } |
146 | } |
| 147 | panic(PANIC "frames_free inconsistent (%d)\n", frames_free); |
147 | panic("frames_free inconsistent (%d)\n", frames_free); |
| 148 | } |
148 | } |
| 149 | spinlock_unlock(&framelock); |
149 | spinlock_unlock(&framelock); |
| 150 | cpu_priority_restore(pri); |
150 | cpu_priority_restore(pri); |
| 151 | 151 | ||
| 152 | if (flags & FRAME_PANIC) |
152 | if (flags & FRAME_PANIC) |
| 153 | panic(PANIC "unable to allocate frame\n"); |
153 | panic("unable to allocate frame\n"); |
| 154 | 154 | ||
| 155 | /* TODO: implement sleeping logic here */ |
155 | /* TODO: implement sleeping logic here */ |
| 156 | panic(PANIC "sleep not supported\n"); |
156 | panic("sleep not supported\n"); |
| 157 | 157 | ||
| 158 | goto loop; |
158 | goto loop; |
| 159 | } |
159 | } |
| 160 | 160 | ||
| 161 | /* |
161 | /* |
| Line 193... | Line 193... | ||
| 193 | * It is still necessary to increment frames_free. |
193 | * It is still necessary to increment frames_free. |
| 194 | */ |
194 | */ |
| 195 | frames_free++; |
195 | frames_free++; |
| 196 | } |
196 | } |
| 197 | } |
197 | } |
| 198 | else panic(PANIC "frame_free: frame already free\n"); |
198 | else panic("frame_free: frame already free\n"); |
| 199 | } |
199 | } |
| 200 | else panic(PANIC "frame_free: frame number too big\n"); |
200 | else panic("frame_free: frame number too big\n"); |
| 201 | 201 | ||
| 202 | spinlock_unlock(&framelock); |
202 | spinlock_unlock(&framelock); |
| 203 | cpu_priority_restore(pri); |
203 | cpu_priority_restore(pri); |
| 204 | } |
204 | } |
| 205 | 205 | ||