| 35,6 → 35,9 |
|---|
| #include <ddi.h> |
| #include <libc.h> |
| #include <task.h> |
| #include <as.h> |
| #include <align.h> |
| #include <libarch/config.h> |
| #include <kernel/ddi/ddi_arg.h> |
| |
| /** Map piece of physical memory to task. |
| 41,18 → 44,20 |
|---|
| * |
| * Caller of this function must have the CAP_MEM_MANAGER capability. |
| * |
| * @param pf Physical address of the starting frame. |
| * @param vp Virtual address of the sterting page. |
| * @param pages Number of pages to map. |
| * @param flags Flags for the new address space area. |
| * @param pf Physical address of the starting frame. |
| * @param vp Virtual address of the starting page. |
| * @param pages Number of pages to map. |
| * @param flags Flags for the new address space area. |
| * |
| * @return 0 on success, EPERM if the caller lacks the CAP_MEM_MANAGER capability, |
| * ENOENT if there is no task with specified ID and ENOMEM if there |
| * was some problem in creating address space area. |
| * @return 0 on success, EPERM if the caller lacks the |
| * CAP_MEM_MANAGER capability, ENOENT if there is no task |
| * with specified ID and ENOMEM if there was some problem |
| * in creating address space area. |
| */ |
| int physmem_map(void *pf, void *vp, unsigned long pages, int flags) |
| { |
| return __SYSCALL4(SYS_PHYSMEM_MAP, (sysarg_t) pf, (sysarg_t) vp, pages, flags); |
| return __SYSCALL4(SYS_PHYSMEM_MAP, (sysarg_t) pf, (sysarg_t) vp, pages, |
| flags); |
| } |
| |
| /** Enable I/O space range to task. |
| 59,13 → 64,14 |
|---|
| * |
| * Caller of this function must have the IO_MEM_MANAGER capability. |
| * |
| * @param id Task ID. |
| * @param ioaddr Starting address of the I/O range. |
| * @param size Size of the range. |
| * @param id Task ID. |
| * @param ioaddr Starting address of the I/O range. |
| * @param size Size of the range. |
| * |
| * @return 0 on success, EPERM if the caller lacks the CAP_IO_MANAGER capability, |
| * ENOENT if there is no task with specified ID and ENOMEM if there |
| * was some problem in allocating memory. |
| * @return 0 on success, EPERM if the caller lacks the |
| * CAP_IO_MANAGER capability, ENOENT if there is no task |
| * with specified ID and ENOMEM if there was some problem |
| * in allocating memory. |
| */ |
| int iospace_enable(task_id_t id, void *ioaddr, unsigned long size) |
| { |
| 80,7 → 86,7 |
|---|
| |
| /** Interrupt control |
| * |
| * @param enable 1 - enable interrupts, 0 - disable interrupts |
| * @param enable 1 - enable interrupts, 0 - disable interrupts |
| */ |
| int preemption_control(int enable) |
| { |
| 87,5 → 93,36 |
|---|
| return __SYSCALL1(SYS_PREEMPT_CONTROL, (sysarg_t) enable); |
| } |
| |
| /** Enable PIO for specified I/O range. |
| * |
| * @param pio_addr I/O start address. |
| * @param size Size of the I/O region. |
| * @param use_addr Address where the final address for application's PIO |
| * will be stored. |
| * |
| * @return Zero on success or negative error code. |
| */ |
| int pio_enable(void *pio_addr, size_t size, void **use_addr) |
| { |
| void *phys; |
| void *virt; |
| size_t offset; |
| unsigned int pages; |
| |
| #ifdef IO_SPACE_BOUNDARY |
| if (pio_addr < IO_SPACE_BOUNDARY) { |
| *use_addr = pio_addr; |
| return iospace_enable(task_get_id(), pio_addr, size); |
| } |
| #endif |
| |
| phys = ALIGN_DOWN((uintptr_t) pio_addr, PAGE_SIZE); |
| offset = pio_addr - phys; |
| pages = ALIGN_UP(offset + size, PAGE_SIZE) >> PAGE_WIDTH; |
| virt = as_get_mappable_page(pages); |
| *use_addr = virt + offset; |
| return physmem_map(phys, virt, pages, AS_AREA_READ | AS_AREA_WRITE); |
| } |
| |
| /** @} |
| */ |