diff options
Diffstat (limited to 'bsd/drm/agpsupport.c')
-rw-r--r-- | bsd/drm/agpsupport.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/bsd/drm/agpsupport.c b/bsd/drm/agpsupport.c new file mode 100644 index 00000000..53444c90 --- /dev/null +++ b/bsd/drm/agpsupport.c @@ -0,0 +1,271 @@ +/* agpsupport.c -- DRM support for AGP/GART backend + * Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * 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. + * + * Author: Rickard E. (Rik) Faith <faith@precisioninsight.com> + * + * $XFree86$ + * + */ + +#define __NO_VERSION__ +#include "drmP.h" + +#ifdef DRM_AGP + +#include <pci/agpvar.h> + +MODULE_DEPEND(drm, agp, 1, 1, 1); + +int +drm_agp_info(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + struct agp_info *kern; + drm_agp_info_t info; + + if (!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(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + int retcode; + + if (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(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + + if (!dev->agp->acquired) return EINVAL; + agp_release(dev->agp->agpdev); + dev->agp->acquired = 0; + return 0; + +} + +int +drm_agp_enable(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_agp_mode_t mode; + + if (!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(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + 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->acquired) return EINVAL; + + request = *(drm_agp_buffer_t *) data; + + if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS))) + return ENOMEM; + + memset(entry, 0, 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(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_agp_binding_t request; + drm_agp_mem_t *entry; + + if (!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; + return drm_unbind_agp(entry->handle); +} + +int drm_agp_bind(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_agp_binding_t request; + drm_agp_mem_t *entry; + int retcode; + int page; + + if (!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(dev_t kdev, u_long cmd, caddr_t data, + int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_agp_buffer_t request; + drm_agp_mem_t *entry; + + if (!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; + head->agpdev = agpdev; + memset((void *)head, 0, sizeof(*head)); + 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; +} + +#endif /* DRM_AGP */ |