diff options
Diffstat (limited to 'linux-core/sis_mm.c')
-rw-r--r-- | linux-core/sis_mm.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/linux-core/sis_mm.c b/linux-core/sis_mm.c new file mode 100644 index 00000000..ee924535 --- /dev/null +++ b/linux-core/sis_mm.c @@ -0,0 +1,286 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA. + * 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 + * THE COPYRIGHT HOLDERS, AUTHORS 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: + * Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "drmP.h" +#include "sis_drm.h" +#include "sis_drv.h" + +#if defined(__linux__) +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) +#include <video/sisfb.h> +#else +#include <linux/sisfb.h> +#endif +#endif + +#define VIDEO_TYPE 0 +#define AGP_TYPE 1 + +#define SIS_MM_ALIGN_SHIFT 4 +#define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1) + +#if defined(__linux__) && defined(CONFIG_FB_SIS) +/* fb management via fb device */ + +#define SIS_MM_ALIGN_SHIFT 0 +#define SIS_MM_ALIGN_MASK 0 + +static void *sis_sman_mm_allocate(void *private, unsigned long size, + unsigned alignment) +{ + struct sis_memreq req; + + req.size = size; + sis_malloc(&req); + if (req.size == 0) + return NULL; + else + return (void *)~req.offset; +} + +static void sis_sman_mm_free(void *private, void *ref) +{ + sis_free(~((unsigned long)ref)); +} + +static void sis_sman_mm_destroy(void *private) +{ + ; +} + +unsigned long sis_sman_mm_offset(void *private, void *ref) +{ + return ~((unsigned long)ref); +} + +#endif + +static int sis_fb_init(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_sis_private_t *dev_priv = dev->dev_private; + drm_sis_fb_t fb; + int ret; + + DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *) data, sizeof(fb)); + + down(&dev->struct_sem); +#if defined(__linux__) && defined(CONFIG_FB_SIS) + { + drm_sman_mm_t sman_mm; + sman_mm.private = (void *)0xFFFFFFFF; + sman_mm.allocate = sis_sman_mm_allocate; + sman_mm.free = sis_sman_mm_free; + sman_mm.destroy = sis_sman_mm_destroy; + sman_mm.offset = sis_sman_mm_offset; + ret = + drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm); + } +#else + ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0, + fb.size >> SIS_MM_ALIGN_SHIFT); +#endif + + if (ret) { + DRM_ERROR("VRAM memory manager initialisation error\n"); + up(&dev->struct_sem); + return ret; + } + + dev_priv->vram_initialized = TRUE; + dev_priv->vram_offset = fb.offset; + + up(&dev->struct_sem); + DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size); + + return 0; +} + +static int sis_drm_alloc(drm_device_t * dev, drm_file_t * priv, + unsigned long data, int pool) +{ + drm_sis_private_t *dev_priv = dev->dev_private; + drm_sis_mem_t __user *argp = (drm_sis_mem_t __user *) data; + drm_sis_mem_t mem; + int retval = 0; + drm_memblock_item_t *item; + + DRM_COPY_FROM_USER_IOCTL(mem, argp, sizeof(mem)); + + down(&dev->struct_sem); + + if (FALSE == ((pool == 0) ? dev_priv->vram_initialized : + dev_priv->agp_initialized)) { + DRM_ERROR + ("Attempt to allocate from uninitialized memory manager.\n"); + return DRM_ERR(EINVAL); + } + + mem.size = (mem.size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT; + item = drm_sman_alloc(&dev_priv->sman, pool, mem.size, 0, + (unsigned long)priv); + + up(&dev->struct_sem); + if (item) { + mem.offset = ((pool == 0) ? + dev_priv->vram_offset : dev_priv->agp_offset) + + (item->mm-> + offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT); + mem.free = item->user_hash.key; + mem.size = mem.size << SIS_MM_ALIGN_SHIFT; + } else { + mem.offset = 0; + mem.size = 0; + mem.free = 0; + retval = DRM_ERR(ENOMEM); + } + + DRM_COPY_TO_USER_IOCTL(argp, mem, sizeof(mem)); + + DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem.size, + mem.offset); + + return retval; +} + +static int sis_drm_free(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_sis_private_t *dev_priv = dev->dev_private; + drm_sis_mem_t mem; + int ret; + + DRM_COPY_FROM_USER_IOCTL(mem, (drm_sis_mem_t __user *) data, + sizeof(mem)); + + down(&dev->struct_sem); + ret = drm_sman_free_key(&dev_priv->sman, mem.free); + up(&dev->struct_sem); + DRM_DEBUG("free = 0x%lx\n", mem.free); + + return ret; +} + +static int sis_fb_alloc(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + return sis_drm_alloc(dev, priv, data, VIDEO_TYPE); +} + +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; + int ret; + dev_priv = dev->dev_private; + + DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *) data, + sizeof(agp)); + down(&dev->struct_sem); + ret = drm_sman_set_range(&dev_priv->sman, AGP_TYPE, 0, + agp.size >> SIS_MM_ALIGN_SHIFT); + + if (ret) { + DRM_ERROR("AGP memory manager initialisation error\n"); + up(&dev->struct_sem); + return ret; + } + + dev_priv->agp_initialized = TRUE; + dev_priv->agp_offset = agp.offset; + up(&dev->struct_sem); + + DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size); + return 0; +} + +static int sis_ioctl_agp_alloc(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + + return sis_drm_alloc(dev, priv, data, AGP_TYPE); +} + +int sis_final_context(struct drm_device *dev, int context) +{ + if (dev->ctx_count == 1 && dev->dev_private) { + drm_sis_private_t *dev_priv = dev->dev_private; + + DRM_DEBUG("Last Context\n"); + down(&dev->struct_sem); + drm_sman_cleanup(&dev_priv->sman); + dev_priv->vram_initialized = FALSE; + dev_priv->agp_initialized = FALSE; + up(&dev->struct_sem); + } + return 1; +} + +void sis_reclaim_buffers_locked(drm_device_t * dev, struct file *filp) +{ + drm_sis_private_t *dev_priv = dev->dev_private; + drm_file_t *priv = filp->private_data; + + down(&dev->struct_sem); + if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)priv)) { + up(&dev->struct_sem); + return; + } + + if (dev->driver->dma_quiescent) { + dev->driver->dma_quiescent(dev); + } + + drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)priv); + up(&dev->struct_sem); + return; +} + +drm_ioctl_desc_t sis_ioctls[] = { + [DRM_IOCTL_NR(DRM_SIS_FB_ALLOC)] = {sis_fb_alloc, DRM_AUTH} + , + [DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = {sis_drm_free, DRM_AUTH} + , + [DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] = + {sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY} + , + [DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = {sis_ioctl_agp_alloc, DRM_AUTH} + , + [DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = {sis_drm_free, DRM_AUTH} + , + [DRM_IOCTL_NR(DRM_SIS_FB_INIT)] = + {sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY} +}; + +int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls); |