1 files changed, 459 insertions, 0 deletions
diff --git a/nx-X11/extras/drm/bsd-core/drm_agpsupport.c b/nx-X11/extras/drm/bsd-core/drm_agpsupport.c
new file mode 100644
index 000000000..582935661
--- /dev/null
+++ b/nx-X11/extras/drm/bsd-core/drm_agpsupport.c
@@ -0,0 +1,459 @@
+/* drm_agpsupport.h -- DRM support for AGP/GART backend -*- linux-c -*-
+ * Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com
+ */
+/*-
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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
+ * VA LINUX SYSTEMS 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.
+ *
+ * Author:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ *
+ */
+
+#include "drmP.h"
+
+#ifdef __FreeBSD__
+#include <pci/agpreg.h>
+#include <dev/pci/pcireg.h>
+#endif
+
+/* Returns 1 if AGP or 0 if not. */
+static int
+drm_device_find_capability(drm_device_t *dev, int cap)
+{
+	int ret;
+
+	if (dev->driver.device_is_agp != NULL) {
+		ret = (*dev->driver.device_is_agp)(dev);
+		
+		if (ret != DRM_MIGHT_BE_AGP) {
+			return ret == 2;
+		}
+	}
+
+#ifdef __FreeBSD__
+	/* Code taken from agp.c.  IWBNI that was a public interface. */
+	u_int32_t status;
+	u_int8_t ptr, next;
+
+	/*
+	 * Check the CAP_LIST bit of the PCI status register first.
+	 */
+	status = pci_read_config(dev->device, PCIR_STATUS, 2);
+	if (!(status & 0x10))
+		return 0;
+
+	/*
+	 * Traverse the capabilities list.
+	 */
+	for (ptr = pci_read_config(dev->device, AGP_CAPPTR, 1);
+	     ptr != 0;
+	     ptr = next) {
+		u_int32_t capid = pci_read_config(dev->device, ptr, 4);
+		next = AGP_CAPID_GET_NEXT_PTR(capid);
+
+		/*
+		 * If this capability entry ID is cap, then we are done.
+		 */
+		if (AGP_CAPID_GET_CAP_ID(capid) == cap)
+			return 1;
+	}
+
+	return 0;
+#else
+	/* XXX: fill me in for non-FreeBSD */
+	return 1;
+#endif
+}
+
+int drm_device_is_agp(drm_device_t *dev)
+{
+	return (drm_device_find_capability(dev, PCIY_AGP));
+}
+
+int drm_device_is_pcie(drm_device_t *dev)
+{
+	return (drm_device_find_capability(dev, PCIY_EXPRESS));
+}
+
+int drm_agp_info(drm_device_t * dev, drm_agp_info_t *info)
+{
+	struct agp_info *kern;
+
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+
+	kern                   = &dev->agp->info;
+	agp_get_info(dev->agp->agpdev, kern);
+	info->agp_version_major = 1;
+	info->agp_version_minor = 0;
+	info->mode              = kern->ai_mode;
+	info->aperture_base     = kern->ai_aperture_base;
+	info->aperture_size     = kern->ai_aperture_size;
+	info->memory_allowed    = kern->ai_memory_allowed;
+	info->memory_used       = kern->ai_memory_used;
+	info->id_vendor         = kern->ai_devid & 0xffff;
+	info->id_device         = kern->ai_devid >> 16;
+
+	return 0;
+}
+
+int drm_agp_info_ioctl(DRM_IOCTL_ARGS)
+{
+	int err;
+	drm_agp_info_t info;
+	DRM_DEVICE;
+
+	err = drm_agp_info(dev, &info);
+	if (err != 0)
+		return err;
+
+	*(drm_agp_info_t *) data = info;
+	return 0;
+}
+
+int drm_agp_acquire_ioctl(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+
+	return drm_agp_acquire(dev);
+}
+
+int drm_agp_acquire(drm_device_t *dev)
+{
+	int retcode;
+
+	if (!dev->agp || dev->agp->acquired)
+		return EINVAL;
+
+	retcode = agp_acquire(dev->agp->agpdev);
+	if (retcode)
+		return retcode;
+
+	dev->agp->acquired = 1;
+	return 0;
+}
+
+int drm_agp_release_ioctl(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+
+	return drm_agp_release(dev);
+}
+
+int drm_agp_release(drm_device_t * dev)
+{
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+	agp_release(dev->agp->agpdev);
+	dev->agp->acquired = 0;
+	return 0;
+}
+
+int drm_agp_enable(drm_device_t *dev, drm_agp_mode_t mode)
+{
+
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+	
+	dev->agp->mode    = mode.mode;
+	agp_enable(dev->agp->agpdev, mode.mode);
+	dev->agp->base    = dev->agp->info.ai_aperture_base;
+	dev->agp->enabled = 1;
+	return 0;
+}
+
+int drm_agp_enable_ioctl(DRM_IOCTL_ARGS)
+{
+	drm_agp_mode_t mode;
+	DRM_DEVICE;
+
+	mode = *(drm_agp_mode_t *) data;
+
+	return drm_agp_enable(dev, mode);
+}
+
+int drm_agp_alloc(drm_device_t *dev, drm_agp_buffer_t *request)
+{
+	drm_agp_mem_t    *entry;
+	void	         *handle;
+	unsigned long    pages;
+	u_int32_t	 type;
+	struct agp_memory_info info;
+
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+
+	entry = malloc(sizeof(*entry), M_DRM, M_NOWAIT | M_ZERO);
+	if (entry == NULL)
+		return ENOMEM;
+
+	pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
+	type = (u_int32_t) request->type;
+
+	DRM_UNLOCK();
+	handle = drm_agp_allocate_memory(pages, type);
+	DRM_LOCK();
+	if (handle == NULL) {
+		free(entry, M_DRM);
+		return ENOMEM;
+	}
+	
+	entry->handle    = handle;
+	entry->bound     = 0;
+	entry->pages     = pages;
+	entry->prev      = NULL;
+	entry->next      = dev->agp->memory;
+	if (dev->agp->memory)
+		dev->agp->memory->prev = entry;
+	dev->agp->memory = entry;
+
+	agp_memory_info(dev->agp->agpdev, entry->handle, &info);
+
+	request->handle   = (unsigned long) entry->handle;
+        request->physical = info.ami_physical;
+
+	return 0;
+}
+
+int drm_agp_alloc_ioctl(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_agp_buffer_t request;
+	int retcode;
+
+	request = *(drm_agp_buffer_t *) data;
+
+	DRM_LOCK();
+	retcode = drm_agp_alloc(dev, &request);
+	DRM_UNLOCK();
+
+	*(drm_agp_buffer_t *) data = request;
+
+	return retcode;
+}
+
+static drm_agp_mem_t * drm_agp_lookup_entry(drm_device_t *dev, void *handle)
+{
+	drm_agp_mem_t *entry;
+
+	for (entry = dev->agp->memory; entry; entry = entry->next) {
+		if (entry->handle == handle) return entry;
+	}
+	return NULL;
+}
+
+int drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request)
+{
+	drm_agp_mem_t     *entry;
+	int retcode;
+
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+
+	entry = drm_agp_lookup_entry(dev, (void *)request->handle);
+	if (entry == NULL || !entry->bound)
+		return EINVAL;
+
+	DRM_UNLOCK();
+	retcode = drm_agp_unbind_memory(entry->handle);
+	DRM_LOCK();
+
+	if (retcode == 0)
+		entry->bound = 0;
+
+	return retcode;
+}
+
+int drm_agp_unbind_ioctl(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_agp_binding_t request;
+	int retcode;
+
+	request = *(drm_agp_binding_t *) data;
+
+	DRM_LOCK();
+	retcode = drm_agp_unbind(dev, &request);
+	DRM_UNLOCK();
+
+	return retcode;
+}
+
+int drm_agp_bind(drm_device_t *dev, drm_agp_binding_t *request)
+{
+	drm_agp_mem_t     *entry;
+	int               retcode;
+	int               page;
+	
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+
+	DRM_DEBUG("agp_bind, page_size=%x\n", PAGE_SIZE);
+
+	entry = drm_agp_lookup_entry(dev, (void *)request->handle);
+	if (entry == NULL || entry->bound)
+		return EINVAL;
+
+	page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE;
+
+	DRM_UNLOCK();
+	retcode = drm_agp_bind_memory(entry->handle, page);
+	DRM_LOCK();
+	if (retcode == 0)
+		entry->bound = dev->agp->base + (page << PAGE_SHIFT);
+
+	return retcode;
+}
+
+int drm_agp_bind_ioctl(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_agp_binding_t request;
+	int retcode;
+
+	request = *(drm_agp_binding_t *) data;
+
+	DRM_LOCK();
+	retcode = drm_agp_bind(dev, &request);
+	DRM_UNLOCK();
+
+	return retcode;
+}
+
+int drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request)
+{
+	drm_agp_mem_t    *entry;
+	
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+
+	entry = drm_agp_lookup_entry(dev, (void*)request->handle);
+	if (entry == NULL)
+		return EINVAL;
+   
+	if (entry->prev)
+		entry->prev->next = entry->next;
+	else
+		dev->agp->memory  = entry->next;
+	if (entry->next)
+		entry->next->prev = entry->prev;
+
+	DRM_UNLOCK();
+	if (entry->bound)
+		drm_agp_unbind_memory(entry->handle);
+	drm_agp_free_memory(entry->handle);
+	DRM_LOCK();
+
+	free(entry, M_DRM);
+
+	return 0;
+
+}
+
+int drm_agp_free_ioctl(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_agp_buffer_t request;
+	int retcode;
+
+	request = *(drm_agp_buffer_t *) data;
+
+	DRM_LOCK();
+	retcode = drm_agp_free(dev, &request);
+	DRM_UNLOCK();
+
+	return retcode;
+}
+
+drm_agp_head_t *drm_agp_init(void)
+{
+	device_t agpdev;
+	drm_agp_head_t *head   = NULL;
+	int      agp_available = 1;
+   
+	agpdev = DRM_AGP_FIND_DEVICE();
+	if (!agpdev)
+		agp_available = 0;
+
+	DRM_DEBUG("agp_available = %d\n", agp_available);
+
+	if (agp_available) {
+		head = malloc(sizeof(*head), M_DRM, M_NOWAIT | M_ZERO);
+		if (head == NULL)
+			return NULL;
+		head->agpdev = agpdev;
+		agp_get_info(agpdev, &head->info);
+		head->memory = NULL;
+		DRM_INFO("AGP at 0x%08lx %dMB\n",
+			 (long)head->info.ai_aperture_base,
+			 (int)(head->info.ai_aperture_size >> 20));
+	}
+	return head;
+}
+
+void *drm_agp_allocate_memory(size_t pages, u32 type)
+{
+	device_t agpdev;
+
+	agpdev = DRM_AGP_FIND_DEVICE();
+	if (!agpdev)
+		return NULL;
+
+	return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
+}
+
+int drm_agp_free_memory(void *handle)
+{
+	device_t agpdev;
+
+	agpdev = DRM_AGP_FIND_DEVICE();
+	if (!agpdev || !handle)
+		return 0;
+
+	agp_free_memory(agpdev, handle);
+	return 1;
+}
+
+int drm_agp_bind_memory(void *handle, off_t start)
+{
+	device_t agpdev;
+
+	agpdev = DRM_AGP_FIND_DEVICE();
+	if (!agpdev || !handle)
+		return EINVAL;
+
+	return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
+}
+
+int drm_agp_unbind_memory(void *handle)
+{
+	device_t agpdev;
+
+	agpdev = DRM_AGP_FIND_DEVICE();
+	if (!agpdev || !handle)
+		return EINVAL;
+
+	return agp_unbind_memory(agpdev, handle);
+}