minix/servers/pm/dma.c
2008-11-19 12:38:31 +00:00

96 lines
2.1 KiB
C

#include "pm.h"
#include <minix/com.h>
#include <minix/callnr.h>
#include <minix/type.h>
#include <minix/config.h>
#include <minix/vm.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <archconst.h>
#include "mproc.h"
/*===========================================================================*
* do_adddma *
*===========================================================================*/
PUBLIC int do_adddma()
{
endpoint_t req_proc_e, target_proc_e;
int proc_n, r;
phys_bytes base, size;
struct mproc *rmp;
if (mp->mp_effuid != SUPER_USER)
return EPERM;
req_proc_e= m_in.m_source;
target_proc_e= m_in.m2_i1;
base= m_in.m2_l1;
size= m_in.m2_l2;
if((r = vm_adddma(req_proc_e, target_proc_e, base, size)) != OK) {
printf("pm:do_adddma: vm_adddma failed (%d)\n", r);
return r;
}
/* Find target process */
if (pm_isokendpt(target_proc_e, &proc_n) != OK)
{
printf("pm:do_adddma: endpoint %d not found\n", target_proc_e);
return EINVAL;
}
rmp= &mproc[proc_n];
rmp->mp_flags |= HAS_DMA;
return OK;
}
/*===========================================================================*
* do_deldma *
*===========================================================================*/
PUBLIC int do_deldma()
{
endpoint_t req_proc_e, target_proc_e;
phys_bytes base, size;
if (mp->mp_effuid != SUPER_USER)
return EPERM;
req_proc_e= m_in.m_source;
target_proc_e= m_in.m2_i1;
base= m_in.m2_l1;
size= m_in.m2_l2;
return vm_deldma(req_proc_e, target_proc_e, base, size);
}
/*===========================================================================*
* do_getdma *
*===========================================================================*/
PUBLIC int do_getdma()
{
endpoint_t req_proc_e, proc;
int r;
phys_bytes base, size;
if (mp->mp_effuid != SUPER_USER)
return EPERM;
req_proc_e= m_in.m_source;
if((r=vm_getdma(req_proc_e, &proc, &base, &size)) != OK)
return r;
printf("pm:do_getdma: setting reply to 0x%lx@0x%lx proc %d\n",
size, base, proc);
mp->mp_reply.m2_i1= proc;
mp->mp_reply.m2_l1= base;
mp->mp_reply.m2_l2= size;
return OK;
}