From: Ben Gras <ben@minix3.org>
Date: Wed, 19 Nov 2008 12:38:31 +0000 (+0000)
Subject: lingering file
X-Git-Tag: v3.1.4~226
X-Git-Url: http://zhaoyanbai.com/repos/%22https:/www.google.com/jsapi/static/roff.7.ps?a=commitdiff_plain;h=7b3d952a77f63aca9d5cd4c02e6c301f78b3a8bf;p=minix.git

lingering file
---

diff --git a/servers/pm/dma.c b/servers/pm/dma.c
new file mode 100644
index 000000000..179f9de3b
--- /dev/null
+++ b/servers/pm/dma.c
@@ -0,0 +1,96 @@
+
+#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;
+}
+