| /* |
| * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved. |
| * Copyright 2001-2003 S3 Graphics, Inc. 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, sub license, |
| * 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
| * VIA, S3 GRAPHICS, 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. |
| */ |
| |
| #define __NO_VERSION__ |
| #include "via.h" |
| #include "drmP.h" |
| #include "via_drm.h" |
| #include "via_drv.h" |
| #include "via_ds.h" |
| #include "via_mm.h" |
| |
| #define MAX_CONTEXT 100 |
| |
| unsigned int VIA_DEBUG = 1; |
| |
| typedef struct { |
| int used; |
| int context; |
| set_t *sets[2]; /* 0 for frame buffer, 1 for AGP , 2 for System*/ |
| } via_context_t; |
| |
| static via_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 = via_set_add(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 = via_set_del(global_ppriv[i].sets[type], val); |
| break; |
| } |
| return retval; |
| } |
| |
| /* agp memory management */ |
| |
| static memHeap_t *AgpHeap = NULL; |
| |
| #warning "FIXME: heap re-init cases ?" |
| int via_agp_init(struct inode *inode, struct file *filp, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_via_agp_t agp; |
| |
| if (copy_from_user(&agp, (drm_via_agp_t *)arg, sizeof(agp))) |
| return -EFAULT; |
| |
| AgpHeap = via_mmInit(agp.offset, agp.size); |
| |
| DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size); |
| return 0; |
| } |
| |
| /* fb memory management */ |
| static memHeap_t *FBHeap = NULL; |
| |
| int via_fb_init(struct inode *inode, struct file *filp, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_via_fb_t fb; |
| |
| if (copy_from_user(&fb, (drm_via_fb_t *)arg, sizeof(fb))) |
| return -EFAULT; |
| |
| FBHeap = via_mmInit(fb.offset, fb.size); |
| DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size); |
| |
| return 0; |
| } |
| |
| int via_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] = via_set_init(); |
| global_ppriv[i].sets[1] = via_set_init(); |
| 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 via_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 = via_set_first(set, &item); |
| while (retval) { |
| DRM_DEBUG("free video memory 0x%x\n", item); |
| via_mmFreeMem((PMemBlock)item); |
| retval = via_set_next(set, &item); |
| } |
| via_set_destroy(set); |
| |
| /* AGP Memory */ |
| set = global_ppriv[i].sets[1]; |
| retval = via_set_first(set, &item); |
| while (retval) { |
| DRM_DEBUG("free agp memory 0x%x\n", item); |
| via_mmFreeMem((PMemBlock)item); |
| retval = via_set_next(set, &item); |
| } |
| via_set_destroy(set); |
| |
| global_ppriv[i].used = 0; |
| } |
| return 1; |
| } |
| |
| int via_mem_alloc(struct inode *inode, struct file *filp, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_via_mem_t mem; |
| |
| if (copy_from_user(&mem, (drm_via_mem_t *)arg, sizeof(mem))) |
| return -EFAULT; |
| |
| switch (mem.type) { |
| case VIDEO : |
| if (via_fb_alloc(&mem) < 0) |
| return -ENOMEM; |
| if (copy_to_user((drm_via_mem_t *)arg, &mem, sizeof(mem))) |
| return -EFAULT; |
| return 0; |
| case AGP : |
| if (via_agp_alloc(&mem) < 0) |
| return -ENOMEM; |
| if (copy_to_user((drm_via_mem_t *)arg, &mem, sizeof(mem))) |
| return -EFAULT; |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| int via_fb_alloc(drm_via_mem_t* mem) |
| { |
| drm_via_mm_t fb; |
| PMemBlock block; |
| int retval = 0; |
| |
| if (!FBHeap) |
| return -1; |
| |
| fb.size = mem->size; |
| fb.context = mem->context; |
| |
| block = via_mmAllocMem(FBHeap, fb.size, 5, 0); |
| if (block) { |
| fb.offset = block->ofs; |
| fb.free = (unsigned int)block; |
| if (!add_alloc_set(fb.context, VIDEO, fb.free)) { |
| DRM_DEBUG("adding to allocation set fails\n"); |
| via_mmFreeMem((PMemBlock)fb.free); |
| retval = -1; |
| } |
| } else { |
| fb.offset = 0; |
| fb.size = 0; |
| fb.free = 0; |
| } |
| |
| mem->offset = fb.offset; |
| mem->index = fb.free; |
| |
| DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, (int)fb.offset); |
| |
| return retval; |
| } |
| |
| int via_agp_alloc(drm_via_mem_t* mem) |
| { |
| drm_via_mm_t agp; |
| PMemBlock block; |
| int retval = 0; |
| |
| if (!AgpHeap) |
| return -1; |
| |
| agp.size = mem->size; |
| agp.context = mem->context; |
| |
| block = via_mmAllocMem(AgpHeap, agp.size, 5, 0); |
| if (block) { |
| agp.offset = block->ofs; |
| agp.free = (unsigned int)block; |
| if (!add_alloc_set(agp.context, AGP, agp.free)) { |
| DRM_DEBUG("adding to allocation set fails\n"); |
| via_mmFreeMem((PMemBlock)agp.free); |
| retval = -1; |
| } |
| } else { |
| agp.offset = 0; |
| agp.size = 0; |
| agp.free = 0; |
| } |
| |
| mem->offset = agp.offset; |
| mem->index = agp.free; |
| |
| DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, (unsigned int)agp.offset); |
| return retval; |
| } |
| |
| int via_mem_free(struct inode *inode, struct file *filp, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_via_mem_t mem; |
| |
| if (copy_from_user(&mem, (drm_via_mem_t *)arg, sizeof(mem))) |
| return -EFAULT; |
| |
| switch (mem.type) |
| { |
| case VIDEO : |
| if (via_fb_free(&mem) == 0) |
| return 0; |
| break; |
| case AGP : |
| if (via_agp_free(&mem) == 0) |
| return 0; |
| break; |
| } |
| return -EINVAL; |
| } |
| |
| int via_fb_free(drm_via_mem_t* mem) |
| { |
| drm_via_mm_t fb; |
| int retval = 0; |
| |
| |
| if (!FBHeap) |
| return -1; |
| |
| fb.free = mem->index; |
| fb.context = mem->context; |
| |
| if (!fb.free) |
| return -1; |
| |
| via_mmFreeMem((PMemBlock)fb.free); |
| |
| if (!del_alloc_set(fb.context, VIDEO, fb.free)) |
| retval = -1; |
| |
| DRM_DEBUG("free fb, free = %d\n", fb.free); |
| |
| return retval; |
| } |
| |
| int via_agp_free(drm_via_mem_t* mem) |
| { |
| drm_via_mm_t agp; |
| |
| int retval = 0; |
| |
| agp.free = mem->index; |
| agp.context = mem->context; |
| |
| if (!agp.free) |
| return -1; |
| |
| via_mmFreeMem((PMemBlock)agp.free); |
| |
| if (!del_alloc_set(agp.context, AGP, agp.free)) |
| retval = -1; |
| |
| DRM_DEBUG("free agp, free = %d\n", agp.free); |
| return retval; |
| } |