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Diffstat (limited to 'bsd-core/drm_agpsupport.c')
-rw-r--r--bsd-core/drm_agpsupport.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/bsd-core/drm_agpsupport.c b/bsd-core/drm_agpsupport.c
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index 000000000..ac12c867a
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+++ b/bsd-core/drm_agpsupport.c
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+/* 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);
+}
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