gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

a commit

Browse Source
This commit is contained in:
Taku Shimosawa
2011-12-02 12:35:38 +09:00
parent 5fdb3b2bb2
commit 7999653a00
18 changed files with 536 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
linux/mod_mcctrl/control.c
View File

@ -5,6 +5,7 @@
#include <linux/mm.h>
#include <asm/uaccess.h>
#include <asm/delay.h>
#include <asm/msr.h>
#include "mcctrl.h"
static DECLARE_WAIT_QUEUE_HEAD(wq_prepare);
@ -106,12 +107,15 @@ static long mcexec_start_image(aal_os_t os,
{
struct program_load_desc desc;
struct ikc_scd_packet isp;
struct mcctrl_channel *c;
if (copy_from_user(&desc, udesc,
sizeof(struct program_load_desc))) {
return -EFAULT;
}
c = channels + desc.cpu;
mcctrl_ikc_set_recv_cpu(desc.cpu);
isp.msg = SCD_MSG_SCHEDULE_PROCESS;
@ -131,25 +135,48 @@ int mcexec_syscall(struct mcctrl_channel *c, unsigned long arg)
return 0;
}
int __do_in_kernel_syscall(aal_os_t os, struct mcctrl_channel *c,
struct syscall_request *sc);
int mcexec_wait_syscall(aal_os_t os, struct syscall_wait_desc *__user req)
{
struct syscall_wait_desc swd;
struct mcctrl_channel *c;
unsigned long s, w;
if (copy_from_user(&swd, req, sizeof(swd.cpu))) {
return -EFAULT;
}
c = channels + swd.cpu;
#ifdef DO_USER_MODE
wait_event_interruptible(c->wq_syscall, c->req);
c->req = 0;
if (copy_to_user(&req->sr, c->param.request_va,
sizeof(struct syscall_request))) {
return -EFAULT;
#else
while (1) {
rdtscll(s);
while (!(*c->param.doorbell_va)) {
mb();
cpu_relax();
rdtscll(w);
if (w > s + 1024 * 1024 * 1024 * 1) {
return -EINTR;
}
}
*c->param.doorbell_va = 0;
if (__do_in_kernel_syscall(os, c, c->param.request_va)) {
#endif
if (copy_to_user(&req->sr, c->param.request_va,
sizeof(struct syscall_request))) {
return -EFAULT;
}
#ifndef DO_USER_MODE
break;
}
}
#endif
return 0;
}