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| 51 | * |
51 | * |
| 52 | * @param id Task ID of the destination task. |
52 | * @param id Task ID of the destination task. |
| 53 | * @param pf Physical frame address of the starting frame. |
53 | * @param pf Physical frame address of the starting frame. |
| 54 | * @param vp Virtual page address of the starting page. |
54 | * @param vp Virtual page address of the starting page. |
| 55 | * @param pages Number of pages to map. |
55 | * @param pages Number of pages to map. |
| 56 | * @param writable If true, the mapping will be created writable. |
56 | * @param flags Address space area flags for the mapping. |
| 57 | * |
57 | * |
| 58 | * @return 0 on success, EPERM if the caller lacks capabilities to use this syscall, |
58 | * @return 0 on success, EPERM if the caller lacks capabilities to use this syscall, |
| 59 | * ENOENT if there is no task matching the specified ID and ENOMEM if |
59 | * ENOENT if there is no task matching the specified ID and ENOMEM if |
| 60 | * there was a problem in creating address space area. |
60 | * there was a problem in creating address space area. |
| 61 | */ |
61 | */ |
| 62 | static int ddi_physmem_map(task_id_t id, __address pf, __address vp, count_t pages, bool writable) |
62 | static int ddi_physmem_map(task_id_t id, __address pf, __address vp, count_t pages, int flags) |
| 63 | { |
63 | { |
| 64 | ipl_t ipl; |
64 | ipl_t ipl; |
| 65 | cap_t caps; |
65 | cap_t caps; |
| 66 | task_t *t; |
66 | task_t *t; |
| 67 | int flags; |
- | |
| 68 | mem_backend_data_t backend_data; |
67 | mem_backend_data_t backend_data; |
| 69 | 68 | ||
| 70 | backend_data.base = pf; |
69 | backend_data.base = pf; |
| 71 | backend_data.frames = pages; |
70 | backend_data.frames = pages; |
| 72 | 71 | ||
| Line 99... | Line 98... | ||
| 99 | 98 | ||
| 100 | /* Lock the task and release the lock protecting tasks_btree. */ |
99 | /* Lock the task and release the lock protecting tasks_btree. */ |
| 101 | spinlock_lock(&t->lock); |
100 | spinlock_lock(&t->lock); |
| 102 | spinlock_unlock(&tasks_lock); |
101 | spinlock_unlock(&tasks_lock); |
| 103 | 102 | ||
| 104 | flags = AS_AREA_READ; |
- | |
| 105 | if (writable) |
- | |
| 106 | flags |= AS_AREA_WRITE; |
- | |
| 107 | if (!as_area_create(t->as, flags, pages * PAGE_SIZE, vp, AS_AREA_ATTR_NONE, |
103 | if (!as_area_create(t->as, flags, pages * PAGE_SIZE, vp, AS_AREA_ATTR_NONE, |
| 108 | &phys_backend, &backend_data)) { |
104 | &phys_backend, &backend_data)) { |
| 109 | /* |
105 | /* |
| 110 | * The address space area could not have been created. |
106 | * The address space area could not have been created. |
| 111 | * We report it using ENOMEM. |
107 | * We report it using ENOMEM. |
| Line 193... | Line 189... | ||
| 193 | if (rc != 0) |
189 | if (rc != 0) |
| 194 | return (__native) rc; |
190 | return (__native) rc; |
| 195 | 191 | ||
| 196 | return (__native) ddi_physmem_map((task_id_t) arg.task_id, ALIGN_DOWN((__address) arg.phys_base, FRAME_SIZE), |
192 | return (__native) ddi_physmem_map((task_id_t) arg.task_id, ALIGN_DOWN((__address) arg.phys_base, FRAME_SIZE), |
| 197 | ALIGN_DOWN((__address) arg.virt_base, PAGE_SIZE), (count_t) arg.pages, |
193 | ALIGN_DOWN((__address) arg.virt_base, PAGE_SIZE), (count_t) arg.pages, |
| 198 | (bool) arg.writable); |
194 | (int) arg.flags); |
| 199 | } |
195 | } |
| 200 | 196 | ||
| 201 | /** Wrapper for SYS_ENABLE_IOSPACE syscall. |
197 | /** Wrapper for SYS_ENABLE_IOSPACE syscall. |
| 202 | * |
198 | * |
| 203 | * @param User space address of DDI argument structure. |
199 | * @param User space address of DDI argument structure. |