diff options
Diffstat (limited to 'drivers/char/drm/sis_mm.c')
| -rw-r--r-- | drivers/char/drm/sis_mm.c | 417 |
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 0000000..6610c55 --- /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); + |
