/************************************************************************** * * 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 Hellstr�m <thomas-at-tungstengraphics-dot-com> */ #include "drmP.h" #include "sis_drm.h" #include "sis_drv.h" #include <video/sisfb.h> #define VIDEO_TYPE 0 #define AGP_TYPE 1 #if 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) { ; } static unsigned long sis_sman_mm_offset(void *private, void *ref) { return ~((unsigned long)ref); } #else /* CONFIG_FB_SIS */ #define SIS_MM_ALIGN_SHIFT 4 #define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1) #endif /* CONFIG_FB_SIS */ 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)); mutex_lock(&dev->struct_mutex); #if defined(CONFIG_FB_SIS) { struct drm_sman_mm 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"); mutex_unlock(&dev->struct_mutex); return ret; } dev_priv->vram_initialized = 1; dev_priv->vram_offset = fb.offset; mutex_unlock(&dev->struct_mutex); DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size); return 0; } static int sis_drm_alloc(struct drm_device *dev, struct drm_file * 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; struct drm_memblock_item *item; DRM_COPY_FROM_USER_IOCTL(mem, argp, sizeof(mem)); mutex_lock(&dev->struct_mutex); if (0 == ((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); mutex_unlock(&dev->struct_mutex); 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)); mutex_lock(&dev->struct_mutex); ret = drm_sman_free_key(&dev_priv->sman, mem.free); mutex_unlock(&dev->struct_mutex); 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)); mutex_lock(&dev->struct_mutex); 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"); mutex_unlock(&dev->struct_mutex); return ret; } dev_priv->agp_initialized = 1; dev_priv->agp_offset = agp.offset; mutex_unlock(&dev->struct_mutex); 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); } static drm_local_map_t *sis_reg_init(struct drm_device *dev) { struct drm_map_list *entry; drm_local_map_t *map; list_for_each_entry(entry, &dev->maplist, head) { map = entry->map; if (!map) continue; if (map->type == _DRM_REGISTERS) { return map; } } return NULL; } int sis_idle(struct drm_device *dev) { drm_sis_private_t *dev_priv = dev->dev_private; uint32_t idle_reg; unsigned long end; int i; if (dev_priv->idle_fault) return 0; if (dev_priv->mmio == NULL) { dev_priv->mmio = sis_reg_init(dev); if (dev_priv->mmio == NULL) { DRM_ERROR("Could not find register map.\n"); return 0; } } /* * Implement a device switch here if needed */ if (dev_priv->chipset != SIS_CHIP_315) return 0; /* * Timeout after 3 seconds. We cannot use DRM_WAIT_ON here * because its polling frequency is too low. */ end = jiffies + (DRM_HZ * 3); for (i=0; i<4; ++i) { do { idle_reg = SIS_READ(0x85cc); } while ( !time_after_eq(jiffies, end) && ((idle_reg & 0x80000000) != 0x80000000)); } if (time_after_eq(jiffies, end)) { DRM_ERROR("Graphics engine idle timeout. " "Disabling idle check\n"); dev_priv->idle_fault = 1; } /* * The caller never sees an error code. It gets trapped * in libdrm. */ return 0; } void sis_lastclose(struct drm_device *dev) { drm_sis_private_t *dev_priv = dev->dev_private; if (!dev_priv) return; mutex_lock(&dev->struct_mutex); drm_sman_cleanup(&dev_priv->sman); dev_priv->vram_initialized = 0; dev_priv->agp_initialized = 0; dev_priv->mmio = NULL; mutex_unlock(&dev->struct_mutex); } void sis_reclaim_buffers_locked(struct drm_device * dev, struct file *filp) { drm_sis_private_t *dev_priv = dev->dev_private; struct drm_file *priv = filp->private_data; mutex_lock(&dev->struct_mutex); if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)priv)) { mutex_unlock(&dev->struct_mutex); return; } if (dev->driver->dma_quiescent) { dev->driver->dma_quiescent(dev); } drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)priv); mutex_unlock(&dev->struct_mutex); 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);