via_mm.c revision 1.3
1/* $NetBSD: via_mm.c,v 1.3 2018/08/27 04:58:37 riastradh Exp $ */ 2 3/* 4 * Copyright 2006 Tungsten Graphics Inc., Bismarck, ND., USA. 5 * All rights reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sub license, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 24 * DEALINGS IN THE SOFTWARE. 25 */ 26/* 27 * Authors: Thomas Hellstr��m <thomas-at-tungstengraphics-dot-com> 28 */ 29 30#include <sys/cdefs.h> 31__KERNEL_RCSID(0, "$NetBSD: via_mm.c,v 1.3 2018/08/27 04:58:37 riastradh Exp $"); 32 33#include <drm/drmP.h> 34#include <drm/via_drm.h> 35#include "via_drv.h" 36 37#define VIA_MM_ALIGN_SHIFT 4 38#define VIA_MM_ALIGN_MASK ((1 << VIA_MM_ALIGN_SHIFT) - 1) 39 40struct via_memblock { 41 struct drm_mm_node mm_node; 42 struct list_head owner_list; 43}; 44 45int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv) 46{ 47 drm_via_agp_t *agp = data; 48 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; 49 50 mutex_lock(&dev->struct_mutex); 51 drm_mm_init(&dev_priv->agp_mm, 0, agp->size >> VIA_MM_ALIGN_SHIFT); 52 53 dev_priv->agp_initialized = 1; 54 dev_priv->agp_offset = agp->offset; 55 mutex_unlock(&dev->struct_mutex); 56 57 DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size); 58 return 0; 59} 60 61int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv) 62{ 63 drm_via_fb_t *fb = data; 64 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; 65 66 mutex_lock(&dev->struct_mutex); 67 drm_mm_init(&dev_priv->vram_mm, 0, fb->size >> VIA_MM_ALIGN_SHIFT); 68 69 dev_priv->vram_initialized = 1; 70 dev_priv->vram_offset = fb->offset; 71 72 mutex_unlock(&dev->struct_mutex); 73 DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size); 74 75 return 0; 76 77} 78 79int via_final_context(struct drm_device *dev, int context) 80{ 81 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; 82 83 via_release_futex(dev_priv, context); 84 85 /* Linux specific until context tracking code gets ported to BSD */ 86 /* Last context, perform cleanup */ 87 if (list_is_singular(&dev->ctxlist)) { 88 DRM_DEBUG("Last Context\n"); 89 drm_irq_uninstall(dev); 90 via_cleanup_futex(dev_priv); 91 via_do_cleanup_map(dev); 92 } 93 return 1; 94} 95 96void via_lastclose(struct drm_device *dev) 97{ 98 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; 99 100 if (!dev_priv) 101 return; 102 103 mutex_lock(&dev->struct_mutex); 104 if (dev_priv->vram_initialized) { 105 drm_mm_takedown(&dev_priv->vram_mm); 106 dev_priv->vram_initialized = 0; 107 } 108 if (dev_priv->agp_initialized) { 109 drm_mm_takedown(&dev_priv->agp_mm); 110 dev_priv->agp_initialized = 0; 111 } 112 mutex_unlock(&dev->struct_mutex); 113} 114 115int via_mem_alloc(struct drm_device *dev, void *data, 116 struct drm_file *file) 117{ 118 drm_via_mem_t *mem = data; 119 int retval = 0, user_key; 120 struct via_memblock *item; 121 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; 122 struct via_file_private *file_priv = file->driver_priv; 123 unsigned long tmpSize; 124 125 if (mem->type > VIA_MEM_AGP) { 126 DRM_ERROR("Unknown memory type allocation\n"); 127 return -EINVAL; 128 } 129 mutex_lock(&dev->struct_mutex); 130 if (0 == ((mem->type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized : 131 dev_priv->agp_initialized)) { 132 DRM_ERROR 133 ("Attempt to allocate from uninitialized memory manager.\n"); 134 mutex_unlock(&dev->struct_mutex); 135 return -EINVAL; 136 } 137 138 item = kzalloc(sizeof(*item), GFP_KERNEL); 139 if (!item) { 140 retval = -ENOMEM; 141 goto fail_alloc; 142 } 143 144 tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT; 145 if (mem->type == VIA_MEM_AGP) 146 retval = drm_mm_insert_node(&dev_priv->agp_mm, 147 &item->mm_node, 148 tmpSize, 0, DRM_MM_SEARCH_DEFAULT); 149 else 150 retval = drm_mm_insert_node(&dev_priv->vram_mm, 151 &item->mm_node, 152 tmpSize, 0, DRM_MM_SEARCH_DEFAULT); 153 if (retval) 154 goto fail_alloc; 155 156 retval = idr_alloc(&dev_priv->object_idr, item, 1, 0, GFP_KERNEL); 157 if (retval < 0) 158 goto fail_idr; 159 user_key = retval; 160 161 list_add(&item->owner_list, &file_priv->obj_list); 162 mutex_unlock(&dev->struct_mutex); 163 164 mem->offset = ((mem->type == VIA_MEM_VIDEO) ? 165 dev_priv->vram_offset : dev_priv->agp_offset) + 166 ((item->mm_node.start) << VIA_MM_ALIGN_SHIFT); 167 mem->index = user_key; 168 169 return 0; 170 171fail_idr: 172 drm_mm_remove_node(&item->mm_node); 173fail_alloc: 174 kfree(item); 175 mutex_unlock(&dev->struct_mutex); 176 177 mem->offset = 0; 178 mem->size = 0; 179 mem->index = 0; 180 DRM_DEBUG("Video memory allocation failed\n"); 181 182 return retval; 183} 184 185int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv) 186{ 187 drm_via_private_t *dev_priv = dev->dev_private; 188 drm_via_mem_t *mem = data; 189 struct via_memblock *obj; 190 191 mutex_lock(&dev->struct_mutex); 192 obj = idr_find(&dev_priv->object_idr, mem->index); 193 if (obj == NULL) { 194 mutex_unlock(&dev->struct_mutex); 195 return -EINVAL; 196 } 197 198 idr_remove(&dev_priv->object_idr, mem->index); 199 list_del(&obj->owner_list); 200 drm_mm_remove_node(&obj->mm_node); 201 kfree(obj); 202 mutex_unlock(&dev->struct_mutex); 203 204 DRM_DEBUG("free = 0x%lx\n", mem->index); 205 206 return 0; 207} 208 209 210void via_reclaim_buffers_locked(struct drm_device *dev, 211 struct drm_file *file) 212{ 213 struct via_file_private *file_priv = file->driver_priv; 214 struct via_memblock *entry, *next; 215 216 if (!(file->minor->master && file->master->lock.hw_lock)) 217 return; 218 219 drm_legacy_idlelock_take(&file->master->lock); 220 221 mutex_lock(&dev->struct_mutex); 222 if (list_empty(&file_priv->obj_list)) { 223 mutex_unlock(&dev->struct_mutex); 224 drm_legacy_idlelock_release(&file->master->lock); 225 226 return; 227 } 228 229 via_driver_dma_quiescent(dev); 230 231 list_for_each_entry_safe(entry, next, &file_priv->obj_list, 232 owner_list) { 233 list_del(&entry->owner_list); 234 drm_mm_remove_node(&entry->mm_node); 235 kfree(entry); 236 } 237 mutex_unlock(&dev->struct_mutex); 238 239 drm_legacy_idlelock_release(&file->master->lock); 240 241 return; 242} 243