From fabc64dd573f01a2160be474b4abc65a3a9aa5ea Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Fri, 29 Aug 2003 19:24:36 +0000 Subject: Port the SiS DRM to FreeBSD. This includes the ability for the DRM to allocate framebuffer memory without sisfb, and a new ioctl to be used by the X Server which tells the DRM what region of framebuffer memory to allocate from. Also fixes a possibility to panic the kernel I believe. Tested on linux with sisfb and FreeBSD (without sisfb) with new DRI only. --- shared-core/sis_mm.c | 403 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 403 insertions(+) create mode 100644 shared-core/sis_mm.c (limited to 'shared-core/sis_mm.c') diff --git a/shared-core/sis_mm.c b/shared-core/sis_mm.c new file mode 100644 index 00000000..46cc0efa --- /dev/null +++ b/shared-core/sis_mm.c @@ -0,0 +1,403 @@ +/* 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 + * + */ + +#include "sis.h" +#include "drmP.h" +#include "sis_drm.h" +#include "sis_drv.h" +#include "sis_ds.h" +#if defined(__linux__) && defined(CONFIG_FB_SIS) +#include +#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) + +int sis_fb_init( DRM_IOCTL_ARGS ) +{ + return 0; +} + +int sis_fb_alloc( DRM_IOCTL_ARGS ) +{ + drm_sis_mem_t fb; + struct sis_memreq req; + int retval = 0; + + DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t *)data, 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((drm_sis_mem_t *)data, fb, sizeof(fb)); + + DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", fb.size, req.offset); + + return retval; +} + +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 *)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(fb.free); + + DRM_DEBUG("free fb, offset = %d\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 + */ +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 *)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; +} + +int sis_fb_alloc( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_sis_private_t *dev_priv = dev->dev_private; + 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, (drm_sis_mem_t *)data, 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((drm_sis_mem_t *)data, fb, sizeof(fb)); + + DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset); + + return retval; +} + +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 *)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 = %d\n", fb.free); + + return 0; +} + +#endif + +/* agp memory management */ + +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 *)data, sizeof(agp)); + + dev_priv->AGPHeap = mmInit(agp.offset, agp.size); + + DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size); + + return 0; +} + +int sis_ioctl_agp_alloc( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_sis_private_t *dev_priv = dev->dev_private; + 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, (drm_sis_mem_t *)data, 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((drm_sis_mem_t *)data, agp, sizeof(agp)); + + DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset); + + return retval; +} + +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 *)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 = %d\n", agp.free); + + return 0; +} + +int sis_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 sis_final_context(int context) +{ + int i; + + for (i=0; i