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path: root/drivers/char/drm/sis_mm.c
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Diffstat (limited to 'drivers/char/drm/sis_mm.c')
-rw-r--r--drivers/char/drm/sis_mm.c417
1 files changed, 417 insertions, 0 deletions
diff --git a/drivers/char/drm/sis_mm.c b/drivers/char/drm/sis_mm.c
new file mode 100644
index 00000000000..6610c5576d2
--- /dev/null
+++ b/drivers/char/drm/sis_mm.c
@@ -0,0 +1,417 @@
+/* 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>
+ *
+ */
+
+#include "drmP.h"
+#include "sis_drm.h"
+#include "sis_drv.h"
+#include "sis_ds.h"
+#if defined(__linux__) && defined(CONFIG_FB_SIS)
+#include <video/sisfb.h>
+#endif
+
+#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( DRM_IOCTL_ARGS )
+{
+ return 0;
+}
+
+static int sis_fb_alloc( DRM_IOCTL_ARGS )
+{
+ drm_sis_mem_t fb;
+ struct sis_memreq req;
+ drm_sis_mem_t __user *argp = (void __user *)data;
+ int retval = 0;
+
+ DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
+
+ 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 = DRM_ERR(EINVAL);
+ }
+ } else {
+ fb.offset = 0;
+ fb.size = 0;
+ fb.free = 0;
+ }
+
+ DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
+
+ DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, req.offset);
+
+ return retval;
+}
+
+static int sis_fb_free( DRM_IOCTL_ARGS )
+{
+ drm_sis_mem_t fb;
+ int retval = 0;
+
+ DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *)data, sizeof(fb));
+
+ if (!fb.free)
+ return DRM_ERR(EINVAL);
+
+ if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
+ retval = DRM_ERR(EINVAL);
+ sis_free((u32)fb.free);
+
+ DRM_DEBUG("free fb, offset = %lu\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( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_sis_private_t *dev_priv = dev->dev_private;
+ drm_sis_fb_t fb;
+
+ DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *)data, sizeof(fb));
+
+ 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 DRM_ERR(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( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_sis_private_t *dev_priv = dev->dev_private;
+ drm_sis_mem_t __user *argp = (void __user *)data;
+ drm_sis_mem_t fb;
+ PMemBlock block;
+ int retval = 0;
+
+ if (dev_priv == NULL || dev_priv->FBHeap == NULL)
+ return DRM_ERR(EINVAL);
+
+ DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
+
+ 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 = DRM_ERR(EINVAL);
+ }
+ } else {
+ fb.offset = 0;
+ fb.size = 0;
+ fb.free = 0;
+ }
+
+ DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
+
+ DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset);
+
+ return retval;
+}
+
+static int sis_fb_free( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_sis_private_t *dev_priv = dev->dev_private;
+ drm_sis_mem_t fb;
+
+ if (dev_priv == NULL || dev_priv->FBHeap == NULL)
+ return DRM_ERR(EINVAL);
+
+ DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *)data, sizeof(fb));
+
+ if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock)fb.free))
+ return DRM_ERR(EINVAL);
+
+ if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
+ return DRM_ERR(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( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_sis_private_t *dev_priv = dev->dev_private;
+ drm_sis_agp_t agp;
+
+ 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 DRM_ERR(EINVAL);
+
+ DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *)data, sizeof(agp));
+
+ 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( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_sis_private_t *dev_priv = dev->dev_private;
+ drm_sis_mem_t __user *argp = (void __user *)data;
+ drm_sis_mem_t agp;
+ PMemBlock block;
+ int retval = 0;
+
+ if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
+ return DRM_ERR(EINVAL);
+
+ DRM_COPY_FROM_USER_IOCTL(agp, argp, sizeof(agp));
+
+ 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_COPY_TO_USER_IOCTL(argp, agp, sizeof(agp));
+
+ DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
+
+ return retval;
+}
+
+static int sis_ioctl_agp_free( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_sis_private_t *dev_priv = dev->dev_private;
+ drm_sis_mem_t agp;
+
+ if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
+ return DRM_ERR(EINVAL);
+
+ DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t __user *)data, sizeof(agp));
+
+ if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock)agp.free))
+ return DRM_ERR(EINVAL);
+
+ mmFreeMem((PMemBlock)agp.free);
+ if (!del_alloc_set(agp.context, AGP_TYPE, agp.free))
+ return DRM_ERR(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;
+ 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);
+#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%x\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_NR(DRM_SIS_FB_ALLOC)] = { sis_fb_alloc, 1, 0 },
+ [DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = { sis_fb_free, 1, 0 },
+ [DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] = { sis_ioctl_agp_init, 1, 1 },
+ [DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = { sis_ioctl_agp_alloc, 1, 0 },
+ [DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = { sis_ioctl_agp_free, 1, 0 },
+ [DRM_IOCTL_NR(DRM_SIS_FB_INIT)] = { sis_fb_init, 1, 1 }
+};
+
+int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
+
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