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drm/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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