Import of XFree86 4.2.0

1 files changed, 326 insertions, 0 deletions

diff --git a/bsd-core/drm_agpsupport.c b/bsd-core/drm_agpsupport.c
new file mode 100644
index 00000000..ac12c867
--- /dev/null
+++ b/bsd-core/drm_agpsupport.c
@@ -0,0 +1,326 @@
+/* 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"
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#if __REALLY_HAVE_AGP
+#include <sys/agpio.h>
+#endif
+
+int DRM(agp_info)(DRM_OS_IOCTL)
+{
+	drm_device_t	*dev	= kdev->si_drv1;
+	struct agp_info *kern;
+	drm_agp_info_t   info;
+
+	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;
+
+	*(drm_agp_info_t *) data = info;
+	return 0;
+}
+
+int DRM(agp_acquire)(DRM_OS_IOCTL)
+{
+	drm_device_t *dev = kdev->si_drv1;
+	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)(DRM_OS_IOCTL)
+{
+	drm_device_t *dev = kdev->si_drv1;
+
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+	agp_release(dev->agp->agpdev);
+	dev->agp->acquired = 0;
+	return 0;
+	
+}
+
+void DRM(agp_do_release)(void)
+{
+	device_t agpdev;
+
+	agpdev = agp_find_device();
+	if (agpdev)
+		agp_release(agpdev);
+}
+
+int DRM(agp_enable)(DRM_OS_IOCTL)
+{
+	drm_device_t   *dev = kdev->si_drv1;
+	drm_agp_mode_t mode;
+
+	if (!dev->agp || !dev->agp->acquired) return EINVAL;
+
+	mode = *(drm_agp_mode_t *) data;
+	
+	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_alloc)(DRM_OS_IOCTL)
+{
+	drm_device_t     *dev = kdev->si_drv1;
+	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;
+
+	request = *(drm_agp_buffer_t *) data;
+
+	if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS)))
+		return ENOMEM;
+   
+   	bzero(entry, sizeof(*entry));
+
+	pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
+	type = (u_int32_t) request.type;
+
+	if (!(handle = DRM(alloc_agp)(pages, type))) {
+		DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
+		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;
+
+	*(drm_agp_buffer_t *) data = request;
+
+	return 0;
+}
+
+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_OS_IOCTL)
+{
+	drm_device_t      *dev = kdev->si_drv1;
+	drm_agp_binding_t request;
+	drm_agp_mem_t     *entry;
+	int retcode;
+
+	if (!dev->agp || !dev->agp->acquired) return EINVAL;
+	request = *(drm_agp_binding_t *) data;
+	if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
+		return EINVAL;
+	if (!entry->bound) return EINVAL;
+	retcode=DRM(unbind_agp)(entry->handle);
+	if (!retcode)
+	{
+		entry->bound=0;
+		return 0;
+	}
+	else
+		return retcode;
+}
+
+int DRM(agp_bind)(DRM_OS_IOCTL)
+{
+	drm_device_t      *dev = kdev->si_drv1;
+	drm_agp_binding_t request;
+	drm_agp_mem_t     *entry;
+	int               retcode;
+	int               page;
+	
+	DRM_DEBUG("agp_bind, page_size=%x\n", PAGE_SIZE);
+	if (!dev->agp || !dev->agp->acquired)
+		return EINVAL;
+	request = *(drm_agp_binding_t *) data;
+	if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
+		return EINVAL;
+	if (entry->bound) return EINVAL;
+	page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE;
+	if ((retcode = DRM(bind_agp)(entry->handle, page)))
+		return retcode;
+	entry->bound = dev->agp->base + (page << PAGE_SHIFT);
+	return 0;
+}
+
+int DRM(agp_free)(DRM_OS_IOCTL)
+{
+	drm_device_t     *dev = kdev->si_drv1;
+	drm_agp_buffer_t request;
+	drm_agp_mem_t    *entry;
+	
+	if (!dev->agp || !dev->agp->acquired) return EINVAL;
+	request = *(drm_agp_buffer_t *) data;
+	if (!(entry = DRM(agp_lookup_entry)(dev, (void*) request.handle)))
+		return EINVAL;
+	if (entry->bound) DRM(unbind_agp)(entry->handle);
+   
+	if (entry->prev) entry->prev->next = entry->next;
+	else             dev->agp->memory  = entry->next;
+	if (entry->next) entry->next->prev = entry->prev;
+	DRM(free_agp)(entry->handle, entry->pages);
+	DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
+	return 0;
+}
+
+drm_agp_head_t *DRM(agp_init)(void)
+{
+	device_t agpdev;
+	drm_agp_head_t *head   = NULL;
+	int      agp_available = 1;
+   
+	agpdev = agp_find_device();
+	if (!agpdev)
+		agp_available = 0;
+
+	DRM_DEBUG("agp_available = %d\n", agp_available);
+
+	if (agp_available) {
+		if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS)))
+			return NULL;
+		bzero((void *)head, sizeof(*head));
+		head->agpdev = agpdev;
+		agp_get_info(agpdev, &head->info);
+		head->memory = NULL;
+#if 0				/* bogus */
+		switch (head->agp_info.chipset) {
+		case INTEL_GENERIC:  head->chipset = "Intel";          break;
+		case INTEL_LX:       head->chipset = "Intel 440LX";    break;
+		case INTEL_BX:       head->chipset = "Intel 440BX";    break;
+		case INTEL_GX:       head->chipset = "Intel 440GX";    break;
+		case INTEL_I810:     head->chipset = "Intel i810";     break;
+		case VIA_GENERIC:    head->chipset = "VIA";            break;
+		case VIA_VP3:        head->chipset = "VIA VP3";        break;
+		case VIA_MVP3:       head->chipset = "VIA MVP3";       break;
+		case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro"; break;
+		case SIS_GENERIC:    head->chipset = "SiS";            break;
+		case AMD_GENERIC:    head->chipset = "AMD";            break;
+		case AMD_IRONGATE:   head->chipset = "AMD Irongate";   break;
+		case ALI_GENERIC:    head->chipset = "ALi";            break;
+		case ALI_M1541:      head->chipset = "ALi M1541";      break;
+		default:
+		}
+#endif
+		DRM_INFO("AGP at 0x%08x %dMB\n",
+			 head->info.ai_aperture_base,
+			 head->info.ai_aperture_size >> 20);
+	}
+	return head;
+}
+
+void DRM(agp_uninit)(void)
+{
+/* FIXME: What goes here */
+}
+
+
+agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type)
+{
+	device_t agpdev;
+
+	agpdev = agp_find_device();
+	if (!agpdev)
+		return NULL;
+
+	return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
+}
+
+int DRM(agp_free_memory)(agp_memory *handle)
+{
+	device_t agpdev;
+
+	agpdev = agp_find_device();
+	if (!agpdev || !handle)
+		return 0;
+
+	agp_free_memory(agpdev, handle);
+	return 1;
+}
+
+int DRM(agp_bind_memory)(agp_memory *handle, off_t start)
+{
+	device_t agpdev;
+
+	agpdev = agp_find_device();
+	if (!agpdev || !handle)
+		return EINVAL;
+
+	return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
+}
+
+int DRM(agp_unbind_memory)(agp_memory *handle)
+{
+	device_t agpdev;
+
+	agpdev = agp_find_device();
+	if (!agpdev || !handle)
+		return EINVAL;
+
+	return agp_unbind_memory(agpdev, handle);
+}