Changeset 23 for trunk/kernel/syscalls/sys_undefined.c

Timestamp:

Jun 18, 2017, 10:06:41 PM (6 years ago)

Author:

alain

Message:

Introduce syscalls.

File:

• trunk/kernel/syscalls/sys_undefined.c (moved) (moved from trunk/kernel/syscalls/sys_dma_memcpy.c) (2 diffs)

trunk/kernel/syscalls/sys_undefined.c

@@ -1 +1 @@
 /*
- * kern/sys_dma_memcpy.c - exported DMA access to user process
+ * sys_undefined.c - function executed for an undefined syscall.
  * 
- * Copyright (c) 2008,2009,2010,2011,2012 Ghassan Almaless
- * Copyright (c) 2011,2012 UPMC Sorbonne Universites
+ * Author    Alain Greiner (2016,2017)
  *
- * This file is part of ALMOS-kernel.
+ * Copyright (c) UPMC Sorbonne Universites
  *
- * ALMOS-kernel is free software; you can redistribute it and/or modify it
+ * This file is part of ALMOS-MKH.
+ *
+ * ALMOS-MKH is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2.0 of the License.
  *
- * ALMOS-kernel is distributed in the hope that it will be useful, but
+ * ALMOS-MKH is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -17 +18 @@
  *
  * You should have received a copy of the GNU General Public License
- * along with ALMOS-kernel; if not, write to the Free Software Foundation,
+ * along with ALMOS-MKH; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <errno.h>
-#include <types.h>
-#include <event.h>
-#include <chdev.h>
-#include <driver.h>
-#include <kmem.h>
-#include <kdmsg.h>
-#include <dma.h>
-#include <kcm.h>
 #include <thread.h>
-#include <cluster.h>
-#include <kcm.h>
+#include <process.h>
+#include <printk.h>
 
+///////////////////
+int sys_undefined()
+{
+    thread_t  * this    = CURRENT_THREAD;
+    process_t * process = this->process;
 
-KMEM_OBJATTR_INIT(dma_kmem_request_init)
-{
-        attr->type = KMEM_DMA_REQUEST;
-        attr->name = "KCM Dev-Request";
-        attr->size = sizeof(dev_request_t);
-        attr->aligne = 0;
-        attr->min  = CONFIG_DMA_RQ_KCM_MIN;
-        attr->max  = CONFIG_DMA_RQ_KCM_MAX;
-        attr->ctor = NULL;
-        attr->dtor = NULL;
-  
-        return 0;
+    printk("\n[ERROR] in %s : undefined syscall calle by thread %x in process %x\n",
+           __FUNCTION__ , this->trdid , process->pid );
+    this->errno = EINVAL;
+    return -1;
 }
-
-static EVENT_HANDLER(dma_async_request_event)
-{
-        kmem_req_t req;
-        error_t err;
-  
-        if((err=event_get_error(event)) != 0)
-                printk(ERROR, "ERROR: dma_async_request_event: DMA transfare is not well completed, remaining %d\n", err);
-
-        req.type = KMEM_DMA_REQUEST;
-        req.ptr  = event_get_argument(event);
-
-        assert(req.ptr != NULL && "Corrupted argument, expected the address of request");
-
-        kmem_free(&req);
-        return 0;
-}
-
-static inline error_t dma_do_async_request(void *dst, void *src, size_t size)
-{
-        kmem_req_t req;
-        dev_request_t *rq;
-  
-        req.type  = KMEM_DMA_REQUEST;
-        req.size  = sizeof(*rq);
-        req.flags = AF_KERNEL;
-
-        if((rq = kmem_alloc(&req)) == NULL)
-                return ENOMEM;
-
-        memset(rq, 0, sizeof(*rq));
-
-        rq->src   = src;
-        rq->dst   = dst;
-        rq->count = size;
-        rq->flags = DEV_RQ_NOBLOCK;
-
-        event_set_priority(&rq->event, E_FUNC);
-        event_set_handler(&rq->event, &dma_async_request_event);
-        event_set_argument(&rq->event, rq);
-  
-        return __sys_dma->op.dev.write(__sys_dma, rq);
-}
-
-static inline error_t dma_do_sync_request(void *dst, void *src, size_t size)
-{
-        dev_request_t rq;
-  
-        rq.src   = src;
-        rq.dst   = dst;
-        rq.count = size;
-        rq.flags = 0;
-  
-        return __sys_dma->op.dev.write(__sys_dma, &rq);
-}
-
-
-error_t dma_memcpy(void *dst, void *src, size_t size, uint_t isAsync)
-{
-        if(isAsync == DMA_ASYNC)
-                return dma_do_async_request(dst, src, size);
-        else
-                return dma_do_sync_request(dst, src, size);
-}
-
-
-int sys_dma_memcpy(void *src, void *dst, size_t size)
-{
-        return dma_do_sync_request(dst, src, size);
-}