sis_mm.c
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上传日期:2013-04-10
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- /* sis_mm.c -- Private header for Direct Rendering Manager -*- linux-c -*-
- * Created: Mon Jan 4 10:05:05 1999 by sclin@sis.com.tw
- *
- * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
- * 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.
- *
- * Authors:
- * Sung-Ching Lin <sclin@sis.com.tw>
- *
- */
- #include "sis.h"
- #include <linux/sisfb.h>
- #include "drmP.h"
- #include "sis_drm.h"
- #include "sis_drv.h"
- #include "sis_ds.h"
- #define MAX_CONTEXT 100
- #define VIDEO_TYPE 0
- #define AGP_TYPE 1
- typedef struct {
- int used;
- int context;
- set_t *sets[2]; /* 0 for video, 1 for AGP */
- } sis_context_t;
- static sis_context_t global_ppriv[MAX_CONTEXT];
- static int add_alloc_set(int context, int type, unsigned int val)
- {
- int i, retval = 0;
-
- for(i = 0; i < MAX_CONTEXT; i++)
- if(global_ppriv[i].used && global_ppriv[i].context == context){
- retval = setAdd(global_ppriv[i].sets[type], val);
- break;
- }
- return retval;
- }
- static int del_alloc_set(int context, int type, unsigned int val)
- {
- int i, retval = 0;
- for(i = 0; i < MAX_CONTEXT; i++)
- if(global_ppriv[i].used && global_ppriv[i].context == context){
- retval = setDel(global_ppriv[i].sets[type], val);
- break;
- }
- return retval;
- }
- /* fb management via fb device */
- #if 1
- int sis_fb_alloc(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- drm_sis_mem_t fb;
- struct sis_memreq req;
- int retval = 0;
-
- if (copy_from_user(&fb, (drm_sis_mem_t *)arg, sizeof(fb)))
- return -EFAULT;
-
- req.size = fb.size;
- sis_malloc(&req);
- if(req.offset){
- /* TODO */
- fb.offset = req.offset;
- fb.free = req.offset;
- if(!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)){
- DRM_DEBUG("adding to allocation set failsn");
- sis_free(req.offset);
- retval = -1;
- }
- }
- else{
- fb.offset = 0;
- fb.size = 0;
- fb.free = 0;
- }
-
- if (copy_to_user((drm_sis_mem_t *)arg, &fb, sizeof(fb))) return -EFAULT;
- DRM_DEBUG("alloc fb, size = %d, offset = %ldn", fb.size, req.offset);
- return retval;
- }
- int sis_fb_free(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- drm_sis_mem_t fb;
- int retval = 0;
-
- if (copy_from_user(&fb, (drm_sis_mem_t *)arg, sizeof(fb)))
- return -EFAULT;
-
- if(!fb.free){
- return -1;
- }
- sis_free(fb.free);
- if(!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
- retval = -1;
- DRM_DEBUG("free fb, offset = %ldn", fb.free);
-
- return retval;
- }
- #else
- int sis_fb_alloc(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- return -1;
- }
- int sis_fb_free(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- return 0;
- }
- #endif
- /* agp memory management */
- #if 1
- static memHeap_t *AgpHeap = NULL;
- int sisp_agp_init(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- drm_sis_agp_t agp;
-
- if (copy_from_user(&agp, (drm_sis_agp_t *)arg, sizeof(agp)))
- return -EFAULT;
- AgpHeap = mmInit(agp.offset, agp.size);
- DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
-
- return 0;
- }
- int sisp_agp_alloc(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- drm_sis_mem_t agp;
- PMemBlock block;
- int retval = 0;
-
- if(!AgpHeap)
- return -1;
-
- if (copy_from_user(&agp, (drm_sis_mem_t *)arg, sizeof(agp)))
- return -EFAULT;
-
- block = mmAllocMem(AgpHeap, agp.size, 0, 0);
- if(block){
- /* TODO */
- agp.offset = block->ofs;
- agp.free = (unsigned long)block;
- if(!add_alloc_set(agp.context, AGP_TYPE, agp.free)){
- DRM_DEBUG("adding to allocation set failsn");
- mmFreeMem((PMemBlock)agp.free);
- retval = -1;
- }
- }
- else{
- agp.offset = 0;
- agp.size = 0;
- agp.free = 0;
- }
-
- if (copy_to_user((drm_sis_mem_t *)arg, &agp, sizeof(agp))) return -EFAULT;
- DRM_DEBUG("alloc agp, size = %d, offset = %dn", agp.size, agp.offset);
- return retval;
- }
- int sisp_agp_free(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
- {
- drm_sis_mem_t agp;
- int retval = 0;
- if(!AgpHeap)
- return -1;
-
- if (copy_from_user(&agp, (drm_sis_mem_t *)arg, sizeof(agp)))
- return -EFAULT;
-
- if(!agp.free){
- return -1;
- }
- mmFreeMem((PMemBlock)agp.free);
- if(!del_alloc_set(agp.context, AGP_TYPE, agp.free))
- retval = -1;
- DRM_DEBUG("free agp, free = %ldn", agp.free);
-
- return retval;
- }
- #endif
- int sis_init_context(int context)
- {
- int i;
-
- for(i = 0; i < MAX_CONTEXT ; i++)
- if(global_ppriv[i].used && (global_ppriv[i].context == context))
- break;
- if(i >= MAX_CONTEXT){
- for(i = 0; i < MAX_CONTEXT ; i++){
- if(!global_ppriv[i].used){
- global_ppriv[i].context = context;
- global_ppriv[i].used = 1;
- global_ppriv[i].sets[0] = setInit();
- global_ppriv[i].sets[1] = setInit();
- DRM_DEBUG("init allocation set, socket=%d, context = %dn",
- i, context);
- break;
- }
- }
- if((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
- (global_ppriv[i].sets[1] == NULL)){
- return 0;
- }
- }
-
- return 1;
- }
- int sis_final_context(int context)
- {
- int i;
- for(i=0; i<MAX_CONTEXT; i++)
- if(global_ppriv[i].used && (global_ppriv[i].context == context))
- break;
-
- if(i < MAX_CONTEXT){
- set_t *set;
- unsigned int item;
- int retval;
-
- DRM_DEBUG("find socket %d, context = %dn", i, context);
- /* Video Memory */
- set = global_ppriv[i].sets[0];
- retval = setFirst(set, &item);
- while(retval){
- DRM_DEBUG("free video memory 0x%xn", item);
- sis_free(item);
- retval = setNext(set, &item);
- }
- setDestroy(set);
- /* AGP Memory */
- set = global_ppriv[i].sets[1];
- retval = setFirst(set, &item);
- while(retval){
- DRM_DEBUG("free agp memory 0x%xn", item);
- mmFreeMem((PMemBlock)item);
- retval = setNext(set, &item);
- }
- setDestroy(set);
-
- global_ppriv[i].used = 0;
- }
- /* turn-off auto-flip */
- /* TODO */
- #if defined(SIS_STEREO)
- flip_final();
- #endif
-
- return 1;
- }