Lines Matching +full:linear +full:- +full:mapping +full:- +full:mode
1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2015-2018 Etnaviv Project
6 #include <linux/dma-mapping.h>
29 unmapped_page = context->global->ops->unmap(context, iova, in etnaviv_context_unmap()
51 return -EINVAL; in etnaviv_context_map()
55 ret = context->global->ops->map(context, iova, paddr, pgsize, in etnaviv_context_map()
62 size -= pgsize; in etnaviv_context_map()
65 /* unroll mapping in case something went wrong */ in etnaviv_context_map()
67 etnaviv_context_unmap(context, orig_iova, orig_size - size); in etnaviv_context_map()
80 return -EINVAL; in etnaviv_iommu_map()
83 u32 pa = sg_dma_address(sg) - sg->offset; in etnaviv_iommu_map()
84 size_t bytes = sg_dma_len(sg) + sg->offset; in etnaviv_iommu_map()
98 etnaviv_context_unmap(context, iova, da - iova); in etnaviv_iommu_map()
110 size_t bytes = sg_dma_len(sg) + sg->offset; in etnaviv_iommu_unmap()
123 struct etnaviv_vram_mapping *mapping) in etnaviv_iommu_remove_mapping() argument
125 struct etnaviv_gem_object *etnaviv_obj = mapping->object; in etnaviv_iommu_remove_mapping()
127 etnaviv_iommu_unmap(context, mapping->vram_node.start, in etnaviv_iommu_remove_mapping()
128 etnaviv_obj->sgt, etnaviv_obj->base.size); in etnaviv_iommu_remove_mapping()
129 drm_mm_remove_node(&mapping->vram_node); in etnaviv_iommu_remove_mapping()
136 enum drm_mm_insert_mode mode = DRM_MM_INSERT_LOW; in etnaviv_iommu_find_iova() local
139 lockdep_assert_held(&context->lock); in etnaviv_iommu_find_iova()
147 ret = drm_mm_insert_node_in_range(&context->mm, node, in etnaviv_iommu_find_iova()
148 size, 0, 0, 0, U64_MAX, mode); in etnaviv_iommu_find_iova()
149 if (ret != -ENOSPC) in etnaviv_iommu_find_iova()
153 drm_mm_scan_init(&scan, &context->mm, size, 0, 0, mode); in etnaviv_iommu_find_iova()
157 list_for_each_entry(free, &context->mappings, mmu_node) { in etnaviv_iommu_find_iova()
159 if (!free->vram_node.mm) in etnaviv_iommu_find_iova()
163 * If the iova is pinned, then it's in-use, in etnaviv_iommu_find_iova()
164 * so we must keep its mapping. in etnaviv_iommu_find_iova()
166 if (free->use) in etnaviv_iommu_find_iova()
169 list_add(&free->scan_node, &list); in etnaviv_iommu_find_iova()
170 if (drm_mm_scan_add_block(&scan, &free->vram_node)) { in etnaviv_iommu_find_iova()
179 BUG_ON(drm_mm_scan_remove_block(&scan, &m->vram_node)); in etnaviv_iommu_find_iova()
190 if (!drm_mm_scan_remove_block(&scan, &m->vram_node)) in etnaviv_iommu_find_iova()
191 list_del_init(&m->scan_node); in etnaviv_iommu_find_iova()
196 * this mapping. in etnaviv_iommu_find_iova()
200 m->context = NULL; in etnaviv_iommu_find_iova()
201 list_del_init(&m->mmu_node); in etnaviv_iommu_find_iova()
202 list_del_init(&m->scan_node); in etnaviv_iommu_find_iova()
205 mode = DRM_MM_INSERT_EVICT; in etnaviv_iommu_find_iova()
219 return drm_mm_insert_node_in_range(&context->mm, node, size, 0, 0, va, in etnaviv_iommu_insert_exact()
225 struct etnaviv_vram_mapping *mapping, u64 va) in etnaviv_iommu_map_gem() argument
227 struct sg_table *sgt = etnaviv_obj->sgt; in etnaviv_iommu_map_gem()
231 lockdep_assert_held(&etnaviv_obj->lock); in etnaviv_iommu_map_gem()
233 mutex_lock(&context->lock); in etnaviv_iommu_map_gem()
236 if (context->global->version == ETNAVIV_IOMMU_V1 && in etnaviv_iommu_map_gem()
237 sgt->nents == 1 && !(etnaviv_obj->flags & ETNA_BO_FORCE_MMU)) { in etnaviv_iommu_map_gem()
240 iova = sg_dma_address(sgt->sgl) - memory_base; in etnaviv_iommu_map_gem()
241 if (iova < 0x80000000 - sg_dma_len(sgt->sgl)) { in etnaviv_iommu_map_gem()
242 mapping->iova = iova; in etnaviv_iommu_map_gem()
243 list_add_tail(&mapping->mmu_node, &context->mappings); in etnaviv_iommu_map_gem()
249 node = &mapping->vram_node; in etnaviv_iommu_map_gem()
253 etnaviv_obj->base.size, va); in etnaviv_iommu_map_gem()
256 etnaviv_obj->base.size); in etnaviv_iommu_map_gem()
260 mapping->iova = node->start; in etnaviv_iommu_map_gem()
261 ret = etnaviv_iommu_map(context, node->start, sgt, etnaviv_obj->base.size, in etnaviv_iommu_map_gem()
269 list_add_tail(&mapping->mmu_node, &context->mappings); in etnaviv_iommu_map_gem()
270 context->flush_seq++; in etnaviv_iommu_map_gem()
272 mutex_unlock(&context->lock); in etnaviv_iommu_map_gem()
278 struct etnaviv_vram_mapping *mapping) in etnaviv_iommu_unmap_gem() argument
280 WARN_ON(mapping->use); in etnaviv_iommu_unmap_gem()
282 mutex_lock(&context->lock); in etnaviv_iommu_unmap_gem()
285 if (mapping->vram_node.mm == &context->mm) in etnaviv_iommu_unmap_gem()
286 etnaviv_iommu_remove_mapping(context, mapping); in etnaviv_iommu_unmap_gem()
288 list_del(&mapping->mmu_node); in etnaviv_iommu_unmap_gem()
289 context->flush_seq++; in etnaviv_iommu_unmap_gem()
290 mutex_unlock(&context->lock); in etnaviv_iommu_unmap_gem()
298 etnaviv_cmdbuf_suballoc_unmap(context, &context->cmdbuf_mapping); in etnaviv_iommu_context_free()
300 context->global->ops->free(context); in etnaviv_iommu_context_free()
304 kref_put(&context->refcount, etnaviv_iommu_context_free); in etnaviv_iommu_context_put()
314 if (global->version == ETNAVIV_IOMMU_V1) in etnaviv_iommu_context_init()
322 ret = etnaviv_cmdbuf_suballoc_map(suballoc, ctx, &ctx->cmdbuf_mapping, in etnaviv_iommu_context_init()
323 global->memory_base); in etnaviv_iommu_context_init()
327 if (global->version == ETNAVIV_IOMMU_V1 && in etnaviv_iommu_context_init()
328 ctx->cmdbuf_mapping.iova > 0x80000000) { in etnaviv_iommu_context_init()
329 dev_err(global->dev, in etnaviv_iommu_context_init()
337 etnaviv_cmdbuf_suballoc_unmap(ctx, &ctx->cmdbuf_mapping); in etnaviv_iommu_context_init()
339 global->ops->free(ctx); in etnaviv_iommu_context_init()
346 context->global->ops->restore(gpu, context); in etnaviv_iommu_restore()
350 struct etnaviv_vram_mapping *mapping, in etnaviv_iommu_get_suballoc_va() argument
354 mutex_lock(&context->lock); in etnaviv_iommu_get_suballoc_va()
356 if (mapping->use > 0) { in etnaviv_iommu_get_suballoc_va()
357 mapping->use++; in etnaviv_iommu_get_suballoc_va()
358 mutex_unlock(&context->lock); in etnaviv_iommu_get_suballoc_va()
364 * those GPUs can only work with cmdbufs accessed through the linear in etnaviv_iommu_get_suballoc_va()
365 * window. Instead we manufacture a mapping to make it look uniform in etnaviv_iommu_get_suballoc_va()
368 if (context->global->version == ETNAVIV_IOMMU_V1) { in etnaviv_iommu_get_suballoc_va()
369 mapping->iova = paddr - memory_base; in etnaviv_iommu_get_suballoc_va()
371 struct drm_mm_node *node = &mapping->vram_node; in etnaviv_iommu_get_suballoc_va()
376 mutex_unlock(&context->lock); in etnaviv_iommu_get_suballoc_va()
380 mapping->iova = node->start; in etnaviv_iommu_get_suballoc_va()
381 ret = etnaviv_context_map(context, node->start, paddr, size, in etnaviv_iommu_get_suballoc_va()
385 mutex_unlock(&context->lock); in etnaviv_iommu_get_suballoc_va()
389 context->flush_seq++; in etnaviv_iommu_get_suballoc_va()
392 list_add_tail(&mapping->mmu_node, &context->mappings); in etnaviv_iommu_get_suballoc_va()
393 mapping->use = 1; in etnaviv_iommu_get_suballoc_va()
395 mutex_unlock(&context->lock); in etnaviv_iommu_get_suballoc_va()
401 struct etnaviv_vram_mapping *mapping) in etnaviv_iommu_put_suballoc_va() argument
403 struct drm_mm_node *node = &mapping->vram_node; in etnaviv_iommu_put_suballoc_va()
405 mutex_lock(&context->lock); in etnaviv_iommu_put_suballoc_va()
406 mapping->use--; in etnaviv_iommu_put_suballoc_va()
408 if (mapping->use > 0 || context->global->version == ETNAVIV_IOMMU_V1) { in etnaviv_iommu_put_suballoc_va()
409 mutex_unlock(&context->lock); in etnaviv_iommu_put_suballoc_va()
413 etnaviv_context_unmap(context, node->start, node->size); in etnaviv_iommu_put_suballoc_va()
415 mutex_unlock(&context->lock); in etnaviv_iommu_put_suballoc_va()
420 return context->global->ops->dump_size(context); in etnaviv_iommu_dump_size()
425 context->global->ops->dump(context, buf); in etnaviv_iommu_dump()
431 struct etnaviv_drm_private *priv = gpu->drm->dev_private; in etnaviv_iommu_global_init()
433 struct device *dev = gpu->drm->dev; in etnaviv_iommu_global_init()
435 if (gpu->identity.minor_features1 & chipMinorFeatures1_MMU_VERSION) in etnaviv_iommu_global_init()
438 if (priv->mmu_global) { in etnaviv_iommu_global_init()
439 if (priv->mmu_global->version != version) { in etnaviv_iommu_global_init()
440 dev_err(gpu->dev, in etnaviv_iommu_global_init()
442 return -ENXIO; in etnaviv_iommu_global_init()
445 priv->mmu_global->use++; in etnaviv_iommu_global_init()
451 return -ENOMEM; in etnaviv_iommu_global_init()
453 global->bad_page_cpu = dma_alloc_wc(dev, SZ_4K, &global->bad_page_dma, in etnaviv_iommu_global_init()
455 if (!global->bad_page_cpu) in etnaviv_iommu_global_init()
458 memset32(global->bad_page_cpu, 0xdead55aa, SZ_4K / sizeof(u32)); in etnaviv_iommu_global_init()
461 global->v2.pta_cpu = dma_alloc_wc(dev, ETNAVIV_PTA_SIZE, in etnaviv_iommu_global_init()
462 &global->v2.pta_dma, GFP_KERNEL); in etnaviv_iommu_global_init()
463 if (!global->v2.pta_cpu) in etnaviv_iommu_global_init()
467 global->dev = dev; in etnaviv_iommu_global_init()
468 global->version = version; in etnaviv_iommu_global_init()
469 global->use = 1; in etnaviv_iommu_global_init()
470 mutex_init(&global->lock); in etnaviv_iommu_global_init()
473 global->ops = &etnaviv_iommuv1_ops; in etnaviv_iommu_global_init()
475 global->ops = &etnaviv_iommuv2_ops; in etnaviv_iommu_global_init()
477 priv->mmu_global = global; in etnaviv_iommu_global_init()
482 dma_free_wc(dev, SZ_4K, global->bad_page_cpu, global->bad_page_dma); in etnaviv_iommu_global_init()
486 return -ENOMEM; in etnaviv_iommu_global_init()
491 struct etnaviv_drm_private *priv = gpu->drm->dev_private; in etnaviv_iommu_global_fini()
492 struct etnaviv_iommu_global *global = priv->mmu_global; in etnaviv_iommu_global_fini()
494 if (--global->use > 0) in etnaviv_iommu_global_fini()
497 if (global->v2.pta_cpu) in etnaviv_iommu_global_fini()
498 dma_free_wc(global->dev, ETNAVIV_PTA_SIZE, in etnaviv_iommu_global_fini()
499 global->v2.pta_cpu, global->v2.pta_dma); in etnaviv_iommu_global_fini()
501 if (global->bad_page_cpu) in etnaviv_iommu_global_fini()
502 dma_free_wc(global->dev, SZ_4K, in etnaviv_iommu_global_fini()
503 global->bad_page_cpu, global->bad_page_dma); in etnaviv_iommu_global_fini()
505 mutex_destroy(&global->lock); in etnaviv_iommu_global_fini()
508 priv->mmu_global = NULL; in etnaviv_iommu_global_fini()