From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001
From: Reinhard Tartler <siretart@tauware.de>
Date: Mon, 10 Oct 2011 17:43:39 +0200
Subject: Imported nx-X11-3.1.0-1.tar.gz

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository
---
 nx-X11/extras/drm/shared-core/sis_mm.c | 418 +++++++++++++++++++++++++++++++++
 1 file changed, 418 insertions(+)
 create mode 100644 nx-X11/extras/drm/shared-core/sis_mm.c

(limited to 'nx-X11/extras/drm/shared-core/sis_mm.c')

diff --git a/nx-X11/extras/drm/shared-core/sis_mm.c b/nx-X11/extras/drm/shared-core/sis_mm.c
new file mode 100644
index 000000000..0cab36ef9
--- /dev/null
+++ b/nx-X11/extras/drm/shared-core/sis_mm.c
@@ -0,0 +1,418 @@
+/* sis_mm.c -- Private header for Direct Rendering Manager -*- linux-c -*-
+ * Created: Mon Jan  4 10:05:05 1999 by sclin@sis.com.tw
+ *
+ * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Sung-Ching Lin <sclin@sis.com.tw>
+ *
+ */
+
+#if defined(__linux__) && defined(CONFIG_FB_SIS)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+#include <video/sisfb.h>
+#else
+#include <linux/sisfb.h>
+#endif
+#endif
+#include "drmP.h"
+#include "sis_drm.h"
+#include "sis_drv.h"
+#include "sis_ds.h"
+
+#define MAX_CONTEXT 100
+#define VIDEO_TYPE 0
+#define AGP_TYPE 1
+
+typedef struct {
+	int used;
+	int context;
+	set_t *sets[2];		/* 0 for video, 1 for AGP */
+} sis_context_t;
+
+static sis_context_t global_ppriv[MAX_CONTEXT];
+
+static int add_alloc_set(int context, int type, unsigned int val)
+{
+	int i, retval = 0;
+
+	for (i = 0; i < MAX_CONTEXT; i++) {
+		if (global_ppriv[i].used && global_ppriv[i].context == context) {
+			retval = setAdd(global_ppriv[i].sets[type], val);
+			break;
+		}
+	}
+	return retval;
+}
+
+static int del_alloc_set(int context, int type, unsigned int val)
+{
+	int i, retval = 0;
+
+	for (i = 0; i < MAX_CONTEXT; i++) {
+		if (global_ppriv[i].used && global_ppriv[i].context == context) {
+			retval = setDel(global_ppriv[i].sets[type], val);
+			break;
+		}
+	}
+	return retval;
+}
+
+/* fb management via fb device */
+#if defined(__linux__) && defined(CONFIG_FB_SIS)
+
+static int sis_fb_init(DRM_IOCTL_ARGS)
+{
+	return 0;
+}
+
+static int sis_fb_alloc(DRM_IOCTL_ARGS)
+{
+	drm_sis_mem_t fb;
+	struct sis_memreq req;
+	drm_sis_mem_t __user *argp = (void __user *)data;
+	int retval = 0;
+
+	DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
+
+	req.size = fb.size;
+	sis_malloc(&req);
+	if (req.offset) {
+		/* TODO */
+		fb.offset = req.offset;
+		fb.free = req.offset;
+		if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
+			DRM_DEBUG("adding to allocation set fails\n");
+			sis_free(req.offset);
+			retval = DRM_ERR(EINVAL);
+		}
+	} else {
+		fb.offset = 0;
+		fb.size = 0;
+		fb.free = 0;
+	}
+
+	DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
+
+	DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", fb.size, req.offset);
+
+	return retval;
+}
+
+static int sis_fb_free(DRM_IOCTL_ARGS)
+{
+	drm_sis_mem_t fb;
+	int retval = 0;
+
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
+
+	if (!fb.free)
+		return DRM_ERR(EINVAL);
+
+	if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
+		retval = DRM_ERR(EINVAL);
+	sis_free(fb.free);
+
+	DRM_DEBUG("free fb, offset = 0x%lx\n", fb.free);
+
+	return retval;
+}
+
+#else
+
+/* Called by the X Server to initialize the FB heap.  Allocations will fail
+ * unless this is called.  Offset is the beginning of the heap from the
+ * framebuffer offset (MaxXFBMem in XFree86).
+ *
+ * Memory layout according to Thomas Winischofer:
+ * |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
+ *
+ *    X driver/sisfb                                  HW-   Command-
+ *  framebuffer memory           DRI heap           Cursor   queue
+ */
+static int sis_fb_init(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_fb_t fb;
+
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *) data, sizeof(fb));
+
+	if (dev_priv == NULL) {
+		dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
+					      DRM_MEM_DRIVER);
+		dev_priv = dev->dev_private;
+		if (dev_priv == NULL)
+			return ENOMEM;
+	}
+
+	if (dev_priv->FBHeap != NULL)
+		return DRM_ERR(EINVAL);
+
+	dev_priv->FBHeap = mmInit(fb.offset, fb.size);
+
+	DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
+
+	return 0;
+}
+
+static int sis_fb_alloc(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t __user *argp = (void __user *)data;
+	drm_sis_mem_t fb;
+	PMemBlock block;
+	int retval = 0;
+
+	if (dev_priv == NULL || dev_priv->FBHeap == NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
+
+	block = mmAllocMem(dev_priv->FBHeap, fb.size, 0, 0);
+	if (block) {
+		/* TODO */
+		fb.offset = block->ofs;
+		fb.free = (unsigned long)block;
+		if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
+			DRM_DEBUG("adding to allocation set fails\n");
+			mmFreeMem((PMemBlock) fb.free);
+			retval = DRM_ERR(EINVAL);
+		}
+	} else {
+		fb.offset = 0;
+		fb.size = 0;
+		fb.free = 0;
+	}
+
+	DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
+
+	DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset);
+
+	return retval;
+}
+
+static int sis_fb_free(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t fb;
+
+	if (dev_priv == NULL || dev_priv->FBHeap == NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
+
+	if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock) fb.free))
+		return DRM_ERR(EINVAL);
+
+	if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
+		return DRM_ERR(EINVAL);
+	mmFreeMem((PMemBlock) fb.free);
+
+	DRM_DEBUG("free fb, free = 0x%lx\n", fb.free);
+
+	return 0;
+}
+
+#endif
+
+/* agp memory management */
+
+static int sis_ioctl_agp_init(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_agp_t agp;
+
+	if (dev_priv == NULL) {
+		dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
+					      DRM_MEM_DRIVER);
+		dev_priv = dev->dev_private;
+		if (dev_priv == NULL)
+			return ENOMEM;
+	}
+
+	if (dev_priv->AGPHeap != NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *) data,
+				 sizeof(agp));
+
+	dev_priv->AGPHeap = mmInit(agp.offset, agp.size);
+
+	DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
+
+	return 0;
+}
+
+static int sis_ioctl_agp_alloc(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t __user *argp = (drm_sis_mem_t __user *)data;
+	drm_sis_mem_t agp;
+	PMemBlock block;
+	int retval = 0;
+
+	if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(agp, argp, sizeof(agp));
+
+	block = mmAllocMem(dev_priv->AGPHeap, agp.size, 0, 0);
+	if (block) {
+		/* TODO */
+		agp.offset = block->ofs;
+		agp.free = (unsigned long)block;
+		if (!add_alloc_set(agp.context, AGP_TYPE, agp.free)) {
+			DRM_DEBUG("adding to allocation set fails\n");
+			mmFreeMem((PMemBlock) agp.free);
+			retval = -1;
+		}
+	} else {
+		agp.offset = 0;
+		agp.size = 0;
+		agp.free = 0;
+	}
+
+	DRM_COPY_TO_USER_IOCTL(argp, agp, sizeof(agp));
+
+	DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
+
+	return retval;
+}
+
+static int sis_ioctl_agp_free(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t agp;
+
+	if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t __user *) data,
+				 sizeof(agp));
+
+	if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock) agp.free))
+		return DRM_ERR(EINVAL);
+
+	mmFreeMem((PMemBlock) agp.free);
+	if (!del_alloc_set(agp.context, AGP_TYPE, agp.free))
+		return DRM_ERR(EINVAL);
+
+	DRM_DEBUG("free agp, free = 0x%lx\n", agp.free);
+
+	return 0;
+}
+
+int sis_init_context(struct drm_device *dev, int context)
+{
+	int i;
+
+	for (i = 0; i < MAX_CONTEXT; i++) {
+		if (global_ppriv[i].used &&
+		    (global_ppriv[i].context == context))
+			break;
+	}
+
+	if (i >= MAX_CONTEXT) {
+		for (i = 0; i < MAX_CONTEXT; i++) {
+			if (!global_ppriv[i].used) {
+				global_ppriv[i].context = context;
+				global_ppriv[i].used = 1;
+				global_ppriv[i].sets[0] = setInit();
+				global_ppriv[i].sets[1] = setInit();
+				DRM_DEBUG("init allocation set, socket=%d, "
+					  "context = %d\n", i, context);
+				break;
+			}
+		}
+		if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
+		    (global_ppriv[i].sets[1] == NULL)) {
+			return 0;
+		}
+	}
+
+	return 1;
+}
+
+int sis_final_context(struct drm_device *dev, int context)
+{
+	int i;
+
+	for (i = 0; i < MAX_CONTEXT; i++) {
+		if (global_ppriv[i].used &&
+		    (global_ppriv[i].context == context))
+			break;
+	}
+
+	if (i < MAX_CONTEXT) {
+		set_t *set;
+		ITEM_TYPE item;
+		int retval;
+
+		DRM_DEBUG("find socket %d, context = %d\n", i, context);
+
+		/* Video Memory */
+		set = global_ppriv[i].sets[0];
+		retval = setFirst(set, &item);
+		while (retval) {
+			DRM_DEBUG("free video memory 0x%lx\n", item);
+#if defined(__linux__) && defined(CONFIG_FB_SIS)
+			sis_free(item);
+#else
+			mmFreeMem((PMemBlock) item);
+#endif
+			retval = setNext(set, &item);
+		}
+		setDestroy(set);
+
+		/* AGP Memory */
+		set = global_ppriv[i].sets[1];
+		retval = setFirst(set, &item);
+		while (retval) {
+			DRM_DEBUG("free agp memory 0x%lx\n", item);
+			mmFreeMem((PMemBlock) item);
+			retval = setNext(set, &item);
+		}
+		setDestroy(set);
+
+		global_ppriv[i].used = 0;
+	}
+
+	return 1;
+}
+
+drm_ioctl_desc_t sis_ioctls[] = {
+	[DRM_IOCTL_NR(DRM_SIS_FB_ALLOC)] = {sis_fb_alloc, DRM_AUTH},
+	[DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = {sis_fb_free, DRM_AUTH},
+	[DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] = {sis_ioctl_agp_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
+	[DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = {sis_ioctl_agp_alloc, DRM_AUTH},
+	[DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = {sis_ioctl_agp_free, DRM_AUTH},
+	[DRM_IOCTL_NR(DRM_SIS_FB_INIT)] = {sis_fb_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}
+};
+
+int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
-- 
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