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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/sis_mm.c,v 1.2 2000/08/04 03:51:48 tsi Exp $ */
#define __NO_VERSION__
#include <linux/fb.h>
#include <linux/sisfb.h>
#include <linux/interrupt.h>
#include "drmP.h"
#include "sis_drm_public.h"
#include "sis_ds.h"
#include "sis_drv.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;
copy_from_user_ret(&fb, (drm_sis_mem_t *)arg, sizeof(fb), -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 fails");
sis_free(req.offset);
retval = -1;
}
}
else{
fb.offset = 0;
fb.size = 0;
fb.free = 0;
}
copy_to_user_ret((drm_sis_mem_t *)arg, &fb, sizeof(fb), -EFAULT);
DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", 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;
copy_from_user_ret(&fb, (drm_sis_mem_t *)arg, sizeof(fb), -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 = %d\n", 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 sis_agp_init(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_sis_agp_t agp;
copy_from_user_ret(&agp, (drm_sis_agp_t *)arg, sizeof(agp), -EFAULT);
AgpHeap = mmInit(agp.offset, agp.size);
DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
return 0;
}
int sis_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;
copy_from_user_ret(&agp, (drm_sis_mem_t *)arg, sizeof(agp), -EFAULT);
block = mmAllocMem(AgpHeap, agp.size, 0, 0);
if(block){
/* TODO */
agp.offset = block->ofs;
agp.free = (unsigned int)block;
if(!add_alloc_set(agp.context, AGP_TYPE, agp.free)){
DRM_DEBUG("adding to allocation set fails");
mmFreeMem((PMemBlock)agp.free);
retval = -1;
}
}
else{
agp.offset = 0;
agp.size = 0;
agp.free = 0;
}
copy_to_user_ret((drm_sis_mem_t *)arg, &agp, sizeof(agp), -EFAULT);
DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
return retval;
}
int sis_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;
copy_from_user_ret(&agp, (drm_sis_mem_t *)arg, sizeof(agp), -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 = %d\n", 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 = %d\n",
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 = %d\n", i, context);
/* Video Memory */
set = global_ppriv[i].sets[0];
retval = setFirst(set, &item);
while(retval){
DRM_DEBUG("free video memory 0x%x\n", 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%x\n", 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;
}
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