forked from luck/tmp_suning_uos_patched
415 lines
9.9 KiB
C
415 lines
9.9 KiB
C
/* sis_mm.c -- Private header for Direct Rendering Manager -*- linux-c -*-
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* Created: Mon Jan 4 10:05:05 1999 by sclin@sis.com.tw
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*
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* Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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 NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Sung-Ching Lin <sclin@sis.com.tw>
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*
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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 "sis_ds.h"
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#if defined(__linux__) && defined(CONFIG_FB_SIS)
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#include <video/sisfb.h>
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#endif
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#define MAX_CONTEXT 100
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#define VIDEO_TYPE 0
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#define AGP_TYPE 1
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typedef struct {
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int used;
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int context;
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set_t *sets[2]; /* 0 for video, 1 for AGP */
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} sis_context_t;
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static sis_context_t global_ppriv[MAX_CONTEXT];
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static int add_alloc_set(int context, int type, unsigned int val)
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{
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int i, retval = 0;
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for (i = 0; i < MAX_CONTEXT; i++) {
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if (global_ppriv[i].used && global_ppriv[i].context == context) {
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retval = setAdd(global_ppriv[i].sets[type], val);
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break;
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}
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}
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return retval;
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}
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static int del_alloc_set(int context, int type, unsigned int val)
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{
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int i, retval = 0;
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for (i = 0; i < MAX_CONTEXT; i++) {
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if (global_ppriv[i].used && global_ppriv[i].context == context) {
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retval = setDel(global_ppriv[i].sets[type], val);
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break;
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}
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}
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return retval;
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}
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/* fb management via fb device */
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#if defined(__linux__) && defined(CONFIG_FB_SIS)
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static int sis_fb_init(DRM_IOCTL_ARGS)
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{
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return 0;
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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_sis_mem_t fb;
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struct sis_memreq req;
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drm_sis_mem_t __user *argp = (void __user *)data;
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int retval = 0;
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DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
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req.size = fb.size;
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sis_malloc(&req);
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if (req.offset) {
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/* TODO */
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fb.offset = req.offset;
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fb.free = req.offset;
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if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
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DRM_DEBUG("adding to allocation set fails\n");
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sis_free(req.offset);
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retval = DRM_ERR(EINVAL);
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}
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} else {
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fb.offset = 0;
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fb.size = 0;
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fb.free = 0;
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}
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DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
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DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, req.offset);
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return retval;
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}
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static int sis_fb_free(DRM_IOCTL_ARGS)
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{
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drm_sis_mem_t fb;
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int retval = 0;
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DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
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if (!fb.free)
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return DRM_ERR(EINVAL);
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if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
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retval = DRM_ERR(EINVAL);
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sis_free((u32) fb.free);
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DRM_DEBUG("free fb, offset = %lu\n", fb.free);
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return retval;
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}
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#else
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/* Called by the X Server to initialize the FB heap. Allocations will fail
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* unless this is called. Offset is the beginning of the heap from the
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* framebuffer offset (MaxXFBMem in XFree86).
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*
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* Memory layout according to Thomas Winischofer:
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* |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
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*
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* X driver/sisfb HW- Command-
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* framebuffer memory DRI heap Cursor queue
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*/
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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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DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *) data, sizeof(fb));
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if (dev_priv == NULL) {
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dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
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DRM_MEM_DRIVER);
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dev_priv = dev->dev_private;
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if (dev_priv == NULL)
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return ENOMEM;
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}
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if (dev_priv->FBHeap != NULL)
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return DRM_ERR(EINVAL);
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dev_priv->FBHeap = mmInit(fb.offset, fb.size);
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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_fb_alloc(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 __user *argp = (void __user *)data;
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drm_sis_mem_t fb;
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PMemBlock block;
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int retval = 0;
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if (dev_priv == NULL || dev_priv->FBHeap == NULL)
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return DRM_ERR(EINVAL);
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DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
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block = mmAllocMem(dev_priv->FBHeap, fb.size, 0, 0);
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if (block) {
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/* TODO */
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fb.offset = block->ofs;
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fb.free = (unsigned long)block;
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if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
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DRM_DEBUG("adding to allocation set fails\n");
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mmFreeMem((PMemBlock) fb.free);
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retval = DRM_ERR(EINVAL);
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}
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} else {
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fb.offset = 0;
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fb.size = 0;
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fb.free = 0;
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}
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DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
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DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset);
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return retval;
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}
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static int sis_fb_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 fb;
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if (dev_priv == NULL || dev_priv->FBHeap == NULL)
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return DRM_ERR(EINVAL);
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DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
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if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock) fb.free))
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return DRM_ERR(EINVAL);
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if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
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return DRM_ERR(EINVAL);
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mmFreeMem((PMemBlock) fb.free);
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DRM_DEBUG("free fb, free = 0x%lx\n", fb.free);
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return 0;
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}
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#endif
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/* agp memory management */
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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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if (dev_priv == NULL) {
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dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
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DRM_MEM_DRIVER);
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dev_priv = dev->dev_private;
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if (dev_priv == NULL)
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return ENOMEM;
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}
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if (dev_priv->AGPHeap != NULL)
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return DRM_ERR(EINVAL);
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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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dev_priv->AGPHeap = mmInit(agp.offset, agp.size);
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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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drm_sis_private_t *dev_priv = dev->dev_private;
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drm_sis_mem_t __user *argp = (void __user *)data;
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drm_sis_mem_t agp;
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PMemBlock block;
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int retval = 0;
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if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
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return DRM_ERR(EINVAL);
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DRM_COPY_FROM_USER_IOCTL(agp, argp, sizeof(agp));
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block = mmAllocMem(dev_priv->AGPHeap, agp.size, 0, 0);
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if (block) {
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/* TODO */
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agp.offset = block->ofs;
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agp.free = (unsigned long)block;
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if (!add_alloc_set(agp.context, AGP_TYPE, agp.free)) {
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DRM_DEBUG("adding to allocation set fails\n");
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mmFreeMem((PMemBlock) agp.free);
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retval = -1;
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}
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} else {
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agp.offset = 0;
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agp.size = 0;
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agp.free = 0;
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}
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DRM_COPY_TO_USER_IOCTL(argp, agp, sizeof(agp));
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DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
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return retval;
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}
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static int sis_ioctl_agp_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 agp;
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if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
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return DRM_ERR(EINVAL);
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DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t __user *) data,
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sizeof(agp));
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if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock) agp.free))
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return DRM_ERR(EINVAL);
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mmFreeMem((PMemBlock) agp.free);
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if (!del_alloc_set(agp.context, AGP_TYPE, agp.free))
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return DRM_ERR(EINVAL);
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DRM_DEBUG("free agp, free = 0x%lx\n", agp.free);
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return 0;
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}
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int sis_init_context(struct drm_device *dev, int context)
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{
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int i;
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for (i = 0; i < MAX_CONTEXT; i++) {
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if (global_ppriv[i].used &&
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(global_ppriv[i].context == context))
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break;
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}
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if (i >= MAX_CONTEXT) {
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for (i = 0; i < MAX_CONTEXT; i++) {
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if (!global_ppriv[i].used) {
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global_ppriv[i].context = context;
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global_ppriv[i].used = 1;
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global_ppriv[i].sets[0] = setInit();
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global_ppriv[i].sets[1] = setInit();
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DRM_DEBUG("init allocation set, socket=%d, "
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"context = %d\n", i, context);
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break;
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}
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}
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if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
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(global_ppriv[i].sets[1] == NULL)) {
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return 0;
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}
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}
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return 1;
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}
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int sis_final_context(struct drm_device *dev, int context)
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{
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int i;
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for (i = 0; i < MAX_CONTEXT; i++) {
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if (global_ppriv[i].used &&
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(global_ppriv[i].context == context))
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break;
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}
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if (i < MAX_CONTEXT) {
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set_t *set;
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unsigned int item;
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int retval;
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DRM_DEBUG("find socket %d, context = %d\n", i, context);
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/* Video Memory */
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set = global_ppriv[i].sets[0];
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retval = setFirst(set, &item);
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while (retval) {
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DRM_DEBUG("free video memory 0x%x\n", item);
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#if defined(__linux__) && defined(CONFIG_FB_SIS)
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sis_free(item);
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#else
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mmFreeMem((PMemBlock) item);
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#endif
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retval = setNext(set, &item);
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}
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setDestroy(set);
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/* AGP Memory */
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set = global_ppriv[i].sets[1];
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retval = setFirst(set, &item);
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while (retval) {
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DRM_DEBUG("free agp memory 0x%x\n", item);
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mmFreeMem((PMemBlock) item);
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retval = setNext(set, &item);
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}
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setDestroy(set);
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global_ppriv[i].used = 0;
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}
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return 1;
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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, 1, 0},
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[DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = {sis_fb_free, 1, 0},
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[DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] = {sis_ioctl_agp_init, 1, 1},
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[DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = {sis_ioctl_agp_alloc, 1, 0},
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[DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = {sis_ioctl_agp_free, 1, 0},
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[DRM_IOCTL_NR(DRM_SIS_FB_INIT)] = {sis_fb_init, 1, 1}
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};
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int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
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