diff options
Diffstat (limited to 'linux/via_mm.c')
| -rw-r--r-- | linux/via_mm.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/linux/via_mm.c b/linux/via_mm.c new file mode 100644 index 00000000..9bf7624d --- /dev/null +++ b/linux/via_mm.c @@ -0,0 +1,346 @@ +/*
+ * 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 = 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;
+}
+
+/* agp memory management */
+static memHeap_t *AgpHeap = NULL;
+
+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 = 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 = 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] = 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 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 = setFirst(set, &item);
+ while (retval) {
+ DRM_DEBUG("free video memory 0x%x\n", item);
+ mmFreeMem((PMemBlock)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;
+ }
+
+ 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 -EFAULT;
+ 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 -EFAULT;
+ if (copy_to_user((drm_via_mem_t *)arg, &mem, sizeof(mem)))
+ return -EFAULT;
+ return 0;
+ }
+
+ return -EFAULT;
+}
+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 = 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");
+ 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 = 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");
+ 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 -EFAULT;
+}
+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;
+
+ }
+
+ 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;
+
+ 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;
+}
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