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https://github.com/edk2-porting/linux-next.git
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346 lines
8.3 KiB
C
346 lines
8.3 KiB
C
/**************************************************************************
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*
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* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA.
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*
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**************************************************************************/
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/*
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* Authors:
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* Thomas Hellström <thomas-at-tungstengraphics-dot-com>
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*/
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#include "drmP.h"
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#include "sis_drm.h"
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#include "sis_drv.h"
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#include <video/sisfb.h>
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#define VIDEO_TYPE 0
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#define AGP_TYPE 1
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#define SIS_MM_ALIGN_SHIFT 4
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#define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1)
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#if defined(CONFIG_FB_SIS)
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/* fb management via fb device */
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#define SIS_MM_ALIGN_SHIFT 0
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#define SIS_MM_ALIGN_MASK 0
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static void *sis_sman_mm_allocate(void *private, unsigned long size,
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unsigned alignment)
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{
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struct sis_memreq req;
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req.size = size;
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sis_malloc(&req);
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if (req.size == 0)
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return NULL;
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else
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return (void *)~req.offset;
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}
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static void sis_sman_mm_free(void *private, void *ref)
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{
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sis_free(~((unsigned long)ref));
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}
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static void sis_sman_mm_destroy(void *private)
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{
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;
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}
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unsigned long sis_sman_mm_offset(void *private, void *ref)
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{
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return ~((unsigned long)ref);
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}
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#endif
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static int sis_fb_init(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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drm_sis_private_t *dev_priv = dev->dev_private;
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drm_sis_fb_t fb;
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int ret;
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DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *) data, sizeof(fb));
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mutex_lock(&dev->struct_mutex);
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#if defined(CONFIG_FB_SIS)
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{
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drm_sman_mm_t sman_mm;
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sman_mm.private = (void *)0xFFFFFFFF;
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sman_mm.allocate = sis_sman_mm_allocate;
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sman_mm.free = sis_sman_mm_free;
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sman_mm.destroy = sis_sman_mm_destroy;
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sman_mm.offset = sis_sman_mm_offset;
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ret =
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drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm);
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}
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#else
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ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0,
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fb.size >> SIS_MM_ALIGN_SHIFT);
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#endif
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if (ret) {
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DRM_ERROR("VRAM memory manager initialisation error\n");
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mutex_unlock(&dev->struct_mutex);
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return ret;
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}
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dev_priv->vram_initialized = TRUE;
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dev_priv->vram_offset = fb.offset;
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mutex_unlock(&dev->struct_mutex);
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DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
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return 0;
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}
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static int sis_drm_alloc(drm_device_t * dev, drm_file_t * priv,
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unsigned long data, int pool)
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{
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drm_sis_private_t *dev_priv = dev->dev_private;
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drm_sis_mem_t __user *argp = (drm_sis_mem_t __user *) data;
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drm_sis_mem_t mem;
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int retval = 0;
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drm_memblock_item_t *item;
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DRM_COPY_FROM_USER_IOCTL(mem, argp, sizeof(mem));
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mutex_lock(&dev->struct_mutex);
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if (FALSE == ((pool == 0) ? dev_priv->vram_initialized :
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dev_priv->agp_initialized)) {
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DRM_ERROR
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("Attempt to allocate from uninitialized memory manager.\n");
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return DRM_ERR(EINVAL);
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}
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mem.size = (mem.size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
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item = drm_sman_alloc(&dev_priv->sman, pool, mem.size, 0,
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(unsigned long)priv);
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mutex_unlock(&dev->struct_mutex);
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if (item) {
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mem.offset = ((pool == 0) ?
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dev_priv->vram_offset : dev_priv->agp_offset) +
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(item->mm->
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offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
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mem.free = item->user_hash.key;
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mem.size = mem.size << SIS_MM_ALIGN_SHIFT;
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} else {
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mem.offset = 0;
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mem.size = 0;
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mem.free = 0;
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retval = DRM_ERR(ENOMEM);
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}
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DRM_COPY_TO_USER_IOCTL(argp, mem, sizeof(mem));
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DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem.size,
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mem.offset);
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return retval;
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}
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static int sis_drm_free(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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drm_sis_private_t *dev_priv = dev->dev_private;
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drm_sis_mem_t mem;
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int ret;
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DRM_COPY_FROM_USER_IOCTL(mem, (drm_sis_mem_t __user *) data,
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sizeof(mem));
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mutex_lock(&dev->struct_mutex);
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ret = drm_sman_free_key(&dev_priv->sman, mem.free);
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mutex_unlock(&dev->struct_mutex);
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DRM_DEBUG("free = 0x%lx\n", mem.free);
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return ret;
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}
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static int sis_fb_alloc(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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return sis_drm_alloc(dev, priv, data, VIDEO_TYPE);
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}
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static int sis_ioctl_agp_init(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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drm_sis_private_t *dev_priv = dev->dev_private;
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drm_sis_agp_t agp;
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int ret;
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dev_priv = dev->dev_private;
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DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *) data,
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sizeof(agp));
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mutex_lock(&dev->struct_mutex);
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ret = drm_sman_set_range(&dev_priv->sman, AGP_TYPE, 0,
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agp.size >> SIS_MM_ALIGN_SHIFT);
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if (ret) {
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DRM_ERROR("AGP memory manager initialisation error\n");
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mutex_unlock(&dev->struct_mutex);
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return ret;
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}
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dev_priv->agp_initialized = TRUE;
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dev_priv->agp_offset = agp.offset;
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mutex_unlock(&dev->struct_mutex);
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DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
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return 0;
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}
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static int sis_ioctl_agp_alloc(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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return sis_drm_alloc(dev, priv, data, AGP_TYPE);
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}
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static drm_local_map_t *sis_reg_init(drm_device_t *dev)
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{
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drm_map_list_t *entry;
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drm_local_map_t *map;
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list_for_each_entry(entry, &dev->maplist->head, head) {
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map = entry->map;
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if (!map)
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continue;
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if (map->type == _DRM_REGISTERS) {
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return map;
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}
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}
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return NULL;
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}
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int sis_idle(drm_device_t *dev)
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{
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drm_sis_private_t *dev_priv = dev->dev_private;
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uint32_t idle_reg;
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unsigned long end;
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int i;
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if (dev_priv->idle_fault)
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return 0;
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if (dev_priv->mmio == NULL) {
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dev_priv->mmio = sis_reg_init(dev);
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if (dev_priv->mmio == NULL) {
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DRM_ERROR("Could not find register map.\n");
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return 0;
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}
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}
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/*
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* Implement a device switch here if needed
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*/
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if (dev_priv->chipset != SIS_CHIP_315)
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return 0;
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/*
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* Timeout after 3 seconds. We cannot use DRM_WAIT_ON here
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* because its polling frequency is too low.
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*/
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end = jiffies + (DRM_HZ * 3);
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for (i=0; i<4; ++i) {
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do {
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idle_reg = SIS_READ(0x85cc);
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} while ( !time_after_eq(jiffies, end) &&
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((idle_reg & 0x80000000) != 0x80000000));
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}
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if (time_after_eq(jiffies, end)) {
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DRM_ERROR("Graphics engine idle timeout. "
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"Disabling idle check\n");
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dev_priv->idle_fault = TRUE;
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}
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/*
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* The caller never sees an error code. It gets trapped
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* in libdrm.
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*/
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return 0;
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}
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void sis_lastclose(struct drm_device *dev)
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{
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drm_sis_private_t *dev_priv = dev->dev_private;
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if (!dev_priv)
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return;
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mutex_lock(&dev->struct_mutex);
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drm_sman_cleanup(&dev_priv->sman);
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dev_priv->vram_initialized = FALSE;
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dev_priv->agp_initialized = FALSE;
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dev_priv->mmio = NULL;
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mutex_unlock(&dev->struct_mutex);
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}
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void sis_reclaim_buffers_locked(drm_device_t * dev, struct file *filp)
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{
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drm_sis_private_t *dev_priv = dev->dev_private;
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drm_file_t *priv = filp->private_data;
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mutex_lock(&dev->struct_mutex);
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if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)priv)) {
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mutex_unlock(&dev->struct_mutex);
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return;
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}
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if (dev->driver->dma_quiescent) {
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dev->driver->dma_quiescent(dev);
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}
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drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)priv);
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mutex_unlock(&dev->struct_mutex);
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return;
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}
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drm_ioctl_desc_t sis_ioctls[] = {
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[DRM_IOCTL_NR(DRM_SIS_FB_ALLOC)] = {sis_fb_alloc, DRM_AUTH},
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[DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = {sis_drm_free, DRM_AUTH},
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[DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] =
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{sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY},
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[DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = {sis_ioctl_agp_alloc, DRM_AUTH},
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[DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = {sis_drm_free, DRM_AUTH},
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[DRM_IOCTL_NR(DRM_SIS_FB_INIT)] =
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{sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY}
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};
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int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
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