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. |
42,17 → 45,19 |
* 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 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. |
63,9 → 68,10 |
* @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) |
{ |
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); |
} |
|
/** @} |
*/ |