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3b0a4aef96
pci_find_cap() instead.
470 lines
10 KiB
C
470 lines
10 KiB
C
/*-
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Author:
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* Rickard E. (Rik) Faith <faith@valinux.com>
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* Gareth Hughes <gareth@valinux.com>
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/** @file drm_agpsupport.c
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* Support code for tying the kernel AGP support to DRM drivers and
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* the DRM's AGP ioctls.
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*/
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#include "dev/drm/drmP.h"
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#if __FreeBSD_version >= 800004
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#include <dev/agp/agpreg.h>
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#else /* __FreeBSD_version >= 800004 */
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#include <pci/agpreg.h>
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#endif /* __FreeBSD_version >= 800004 */
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#include <dev/pci/pcireg.h>
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/* Returns 1 if AGP or 0 if not. */
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static int
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drm_device_find_capability(struct drm_device *dev, int cap)
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{
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#if __FreeBSD_version >= 602102
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return (pci_find_cap(dev->device, cap, NULL) == 0);
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#else
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/* Code taken from agp.c. IWBNI that was a public interface. */
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u_int32_t status;
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u_int8_t ptr, next;
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/*
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* Check the CAP_LIST bit of the PCI status register first.
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*/
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status = pci_read_config(dev->device, PCIR_STATUS, 2);
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if (!(status & 0x10))
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return 0;
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/*
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* Traverse the capabilities list.
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*/
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for (ptr = pci_read_config(dev->device, AGP_CAPPTR, 1);
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ptr != 0;
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ptr = next) {
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u_int32_t capid = pci_read_config(dev->device, ptr, 4);
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next = AGP_CAPID_GET_NEXT_PTR(capid);
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/*
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* If this capability entry ID is cap, then we are done.
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*/
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if (AGP_CAPID_GET_CAP_ID(capid) == cap)
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return 1;
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}
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return 0;
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#endif
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}
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int drm_device_is_agp(struct drm_device *dev)
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{
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if (dev->driver->device_is_agp != NULL) {
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int ret;
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/* device_is_agp returns a tristate, 0 = not AGP, 1 = definitely
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* AGP, 2 = fall back to PCI capability
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*/
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ret = (*dev->driver->device_is_agp)(dev);
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if (ret != DRM_MIGHT_BE_AGP)
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return ret;
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}
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return (drm_device_find_capability(dev, PCIY_AGP));
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}
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int drm_device_is_pcie(struct drm_device *dev)
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{
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return (drm_device_find_capability(dev, PCIY_EXPRESS));
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}
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int drm_agp_info(struct drm_device * dev, struct drm_agp_info *info)
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{
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struct agp_info *kern;
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if (!dev->agp || !dev->agp->acquired)
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return EINVAL;
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kern = &dev->agp->info;
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agp_get_info(dev->agp->agpdev, kern);
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info->agp_version_major = 1;
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info->agp_version_minor = 0;
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info->mode = kern->ai_mode;
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info->aperture_base = kern->ai_aperture_base;
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info->aperture_size = kern->ai_aperture_size;
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info->memory_allowed = kern->ai_memory_allowed;
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info->memory_used = kern->ai_memory_used;
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info->id_vendor = kern->ai_devid & 0xffff;
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info->id_device = kern->ai_devid >> 16;
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return 0;
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}
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int drm_agp_info_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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int err;
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struct drm_agp_info info;
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err = drm_agp_info(dev, &info);
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if (err != 0)
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return err;
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*(struct drm_agp_info *) data = info;
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return 0;
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}
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int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return drm_agp_acquire(dev);
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}
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int drm_agp_acquire(struct drm_device *dev)
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{
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int retcode;
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if (!dev->agp || dev->agp->acquired)
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return EINVAL;
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retcode = agp_acquire(dev->agp->agpdev);
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if (retcode)
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return retcode;
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dev->agp->acquired = 1;
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return 0;
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}
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int drm_agp_release_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return drm_agp_release(dev);
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}
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int drm_agp_release(struct drm_device * dev)
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{
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if (!dev->agp || !dev->agp->acquired)
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return EINVAL;
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agp_release(dev->agp->agpdev);
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dev->agp->acquired = 0;
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return 0;
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}
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int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode)
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{
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if (!dev->agp || !dev->agp->acquired)
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return EINVAL;
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dev->agp->mode = mode.mode;
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agp_enable(dev->agp->agpdev, mode.mode);
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dev->agp->enabled = 1;
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return 0;
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}
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int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_agp_mode mode;
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mode = *(struct drm_agp_mode *) data;
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return drm_agp_enable(dev, mode);
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}
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int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request)
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{
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drm_agp_mem_t *entry;
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void *handle;
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unsigned long pages;
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u_int32_t type;
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struct agp_memory_info info;
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if (!dev->agp || !dev->agp->acquired)
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return EINVAL;
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entry = malloc(sizeof(*entry), DRM_MEM_AGPLISTS, M_NOWAIT | M_ZERO);
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if (entry == NULL)
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return ENOMEM;
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pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
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type = (u_int32_t) request->type;
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DRM_UNLOCK();
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handle = drm_agp_allocate_memory(pages, type);
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DRM_LOCK();
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if (handle == NULL) {
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free(entry, DRM_MEM_AGPLISTS);
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return ENOMEM;
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}
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entry->handle = handle;
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entry->bound = 0;
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entry->pages = pages;
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entry->prev = NULL;
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entry->next = dev->agp->memory;
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if (dev->agp->memory)
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dev->agp->memory->prev = entry;
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dev->agp->memory = entry;
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agp_memory_info(dev->agp->agpdev, entry->handle, &info);
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request->handle = (unsigned long) entry->handle;
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request->physical = info.ami_physical;
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return 0;
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}
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int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_agp_buffer request;
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int retcode;
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request = *(struct drm_agp_buffer *) data;
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DRM_LOCK();
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retcode = drm_agp_alloc(dev, &request);
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DRM_UNLOCK();
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*(struct drm_agp_buffer *) data = request;
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return retcode;
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}
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static drm_agp_mem_t * drm_agp_lookup_entry(struct drm_device *dev,
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void *handle)
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{
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drm_agp_mem_t *entry;
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for (entry = dev->agp->memory; entry; entry = entry->next) {
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if (entry->handle == handle) return entry;
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}
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return NULL;
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}
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int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request)
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{
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drm_agp_mem_t *entry;
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int retcode;
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if (!dev->agp || !dev->agp->acquired)
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return EINVAL;
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entry = drm_agp_lookup_entry(dev, (void *)request->handle);
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if (entry == NULL || !entry->bound)
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return EINVAL;
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DRM_UNLOCK();
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retcode = drm_agp_unbind_memory(entry->handle);
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DRM_LOCK();
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if (retcode == 0)
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entry->bound = 0;
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return retcode;
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}
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int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_agp_binding request;
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int retcode;
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request = *(struct drm_agp_binding *) data;
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DRM_LOCK();
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retcode = drm_agp_unbind(dev, &request);
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DRM_UNLOCK();
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return retcode;
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}
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int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request)
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{
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drm_agp_mem_t *entry;
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int retcode;
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int page;
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if (!dev->agp || !dev->agp->acquired)
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return EINVAL;
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DRM_DEBUG("agp_bind, page_size=%x\n", (int)PAGE_SIZE);
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entry = drm_agp_lookup_entry(dev, (void *)request->handle);
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if (entry == NULL || entry->bound)
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return EINVAL;
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page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE;
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DRM_UNLOCK();
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retcode = drm_agp_bind_memory(entry->handle, page);
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DRM_LOCK();
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if (retcode == 0)
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entry->bound = dev->agp->base + (page << PAGE_SHIFT);
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return retcode;
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}
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int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_agp_binding request;
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int retcode;
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request = *(struct drm_agp_binding *) data;
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DRM_LOCK();
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retcode = drm_agp_bind(dev, &request);
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DRM_UNLOCK();
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return retcode;
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}
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int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request)
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{
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drm_agp_mem_t *entry;
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if (!dev->agp || !dev->agp->acquired)
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return EINVAL;
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entry = drm_agp_lookup_entry(dev, (void*)request->handle);
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if (entry == NULL)
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return EINVAL;
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if (entry->prev)
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entry->prev->next = entry->next;
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else
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dev->agp->memory = entry->next;
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if (entry->next)
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entry->next->prev = entry->prev;
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DRM_UNLOCK();
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if (entry->bound)
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drm_agp_unbind_memory(entry->handle);
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drm_agp_free_memory(entry->handle);
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DRM_LOCK();
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free(entry, DRM_MEM_AGPLISTS);
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return 0;
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}
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int drm_agp_free_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_agp_buffer request;
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int retcode;
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request = *(struct drm_agp_buffer *) data;
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DRM_LOCK();
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retcode = drm_agp_free(dev, &request);
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DRM_UNLOCK();
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return retcode;
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}
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drm_agp_head_t *drm_agp_init(void)
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{
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device_t agpdev;
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drm_agp_head_t *head = NULL;
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int agp_available = 1;
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agpdev = DRM_AGP_FIND_DEVICE();
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if (!agpdev)
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agp_available = 0;
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DRM_DEBUG("agp_available = %d\n", agp_available);
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if (agp_available) {
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head = malloc(sizeof(*head), DRM_MEM_AGPLISTS,
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M_NOWAIT | M_ZERO);
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if (head == NULL)
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return NULL;
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head->agpdev = agpdev;
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agp_get_info(agpdev, &head->info);
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head->base = head->info.ai_aperture_base;
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head->memory = NULL;
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DRM_INFO("AGP at 0x%08lx %dMB\n",
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(long)head->info.ai_aperture_base,
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(int)(head->info.ai_aperture_size >> 20));
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}
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return head;
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}
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void *drm_agp_allocate_memory(size_t pages, u32 type)
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{
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device_t agpdev;
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agpdev = DRM_AGP_FIND_DEVICE();
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if (!agpdev)
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return NULL;
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return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
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}
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int drm_agp_free_memory(void *handle)
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{
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device_t agpdev;
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agpdev = DRM_AGP_FIND_DEVICE();
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if (!agpdev || !handle)
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return 0;
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agp_free_memory(agpdev, handle);
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return 1;
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}
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int drm_agp_bind_memory(void *handle, off_t start)
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{
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device_t agpdev;
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agpdev = DRM_AGP_FIND_DEVICE();
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if (!agpdev || !handle)
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return EINVAL;
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return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
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}
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int drm_agp_unbind_memory(void *handle)
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{
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device_t agpdev;
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agpdev = DRM_AGP_FIND_DEVICE();
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if (!agpdev || !handle)
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return EINVAL;
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return agp_unbind_memory(agpdev, handle);
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}
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