NetBSD-5.0.2/sys/external/bsd/drm/dist/shared-core/sis_mm.c
/* 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>
*
*/
#if defined(__linux__) && defined(CONFIG_FB_SIS)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#include <video/sisfb.h>
#else
#include <linux/sisfb.h>
#endif
#endif
#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 defined(__linux__) && defined(CONFIG_FB_SIS)
static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
return 0;
}
static int sis_fb_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_mem_t *fb = data;
struct sis_memreq req;
int retval = 0;
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\n");
sis_free(req.offset);
retval = -EINVAL;
}
} else {
fb->offset = 0;
fb->size = 0;
fb->free = 0;
}
DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", fb->size, req.offset);
return retval;
}
static int sis_fb_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_mem_t fb;
int retval = 0;
if (!fb->free)
return -EINVAL;
if (!del_alloc_set(fb->context, VIDEO_TYPE, fb->free))
retval = -EINVAL;
sis_free(fb->free);
DRM_DEBUG("free fb, offset = 0x%lx\n", fb->free);
return retval;
}
#else
/* Called by the X Server to initialize the FB heap. Allocations will fail
* unless this is called. Offset is the beginning of the heap from the
* framebuffer offset (MaxXFBMem in XFree86).
*
* Memory layout according to Thomas Winischofer:
* |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
*
* X driver/sisfb HW- Command-
* framebuffer memory DRI heap Cursor queue
*/
static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_fb_t *fb = data;
if (dev_priv == NULL) {
dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
DRM_MEM_DRIVER);
dev_priv = dev->dev_private;
if (dev_priv == NULL)
return ENOMEM;
}
if (dev_priv->FBHeap != NULL)
return -EINVAL;
dev_priv->FBHeap = mmInit(fb->offset, fb->size);
DRM_DEBUG("offset = %u, size = %u", fb->offset, fb->size);
return 0;
}
static int sis_fb_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t *fb = data;
PMemBlock block;
int retval = 0;
if (dev_priv == NULL || dev_priv->FBHeap == NULL)
return -EINVAL;
block = mmAllocMem(dev_priv->FBHeap, fb->size, 0, 0);
if (block) {
/* TODO */
fb->offset = block->ofs;
fb->free = (unsigned long)block;
if (!add_alloc_set(fb->context, VIDEO_TYPE, fb->free)) {
DRM_DEBUG("adding to allocation set fails\n");
mmFreeMem((PMemBlock) fb->free);
retval = -EINVAL;
}
} else {
fb->offset = 0;
fb->size = 0;
fb->free = 0;
}
DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb->size, fb->offset);
return retval;
}
static int sis_fb_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t *fb = data;
if (dev_priv == NULL || dev_priv->FBHeap == NULL)
return -EINVAL;
if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock) fb->free))
return -EINVAL;
if (!del_alloc_set(fb->context, VIDEO_TYPE, fb->free))
return -EINVAL;
mmFreeMem((PMemBlock) fb->free);
DRM_DEBUG("free fb, free = 0x%lx\n", fb->free);
return 0;
}
#endif
/* agp memory management */
static int sis_ioctl_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_agp_t *agp = data;
if (dev_priv == NULL) {
dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
DRM_MEM_DRIVER);
dev_priv = dev->dev_private;
if (dev_priv == NULL)
return ENOMEM;
}
if (dev_priv->AGPHeap != NULL)
return -EINVAL;
dev_priv->AGPHeap = mmInit(agp->offset, agp->size);
DRM_DEBUG("offset = %u, size = %u", agp->offset, agp->size);
return 0;
}
static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t *agp = data;
PMemBlock block;
int retval = 0;
if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
return -EINVAL;
block = mmAllocMem(dev_priv->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 fails\n");
mmFreeMem((PMemBlock) agp->free);
retval = -1;
}
} else {
agp->offset = 0;
agp->size = 0;
agp->free = 0;
}
DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp->size,
agp->offset);
return retval;
}
static int sis_ioctl_agp_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t *agp = data;
if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
return -EINVAL;
if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock) agp->free))
return -EINVAL;
mmFreeMem((PMemBlock) agp->free);
if (!del_alloc_set(agp->context, AGP_TYPE, agp->free))
return -EINVAL;
DRM_DEBUG("free agp, free = 0x%lx\n", agp->free);
return 0;
}
int sis_init_context(struct drm_device *dev, 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(struct drm_device *dev, 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;
ITEM_TYPE 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%lx\n", item);
#if defined(__linux__) && defined(CONFIG_FB_SIS)
sis_free(item);
#else
mmFreeMem((PMemBlock) item);
#endif
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%lx\n", item);
mmFreeMem((PMemBlock) item);
retval = setNext(set, &item);
}
setDestroy(set);
global_ppriv[i].used = 0;
}
return 1;
}
drm_ioctl_desc_t sis_ioctls[] = {
DRM_IOCTL_DEF(DRM_SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
DRM_IOCTL_DEF(DRM_SIS_FB_FREE, sis_fb_free, DRM_AUTH),
DRM_IOCTL_DEF(DRM_SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
DRM_IOCTL_DEF(DRM_SIS_AGP_FREE, sis_ioctl_agp_free, DRM_AUTH),
DRM_IOCTL_DEF(DRM_SIS_FB_INIT, sis_fb_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY)
};
int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);