diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau')
-rw-r--r-- | drivers/gpu/drm/nouveau/Kconfig | 6 | ||||
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dmem.c | 103 | ||||
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_svm.c | 2 |
3 files changed, 51 insertions, 60 deletions
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig index dba2613f7180..96b9814e6d06 100644 --- a/drivers/gpu/drm/nouveau/Kconfig +++ b/drivers/gpu/drm/nouveau/Kconfig @@ -84,11 +84,11 @@ config DRM_NOUVEAU_BACKLIGHT config DRM_NOUVEAU_SVM bool "(EXPERIMENTAL) Enable SVM (Shared Virtual Memory) support" - depends on ARCH_HAS_HMM + depends on DEVICE_PRIVATE depends on DRM_NOUVEAU + depends on HMM_MIRROR depends on STAGING - select HMM_MIRROR - select DEVICE_PRIVATE + select MIGRATE_VMA_HELPER default n help Say Y here if you want to enable experimental support for diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index 40c47d6a7d78..42c026010938 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -72,7 +72,8 @@ struct nouveau_dmem_migrate { }; struct nouveau_dmem { - struct hmm_devmem *devmem; + struct nouveau_drm *drm; + struct dev_pagemap pagemap; struct nouveau_dmem_migrate migrate; struct list_head chunk_free; struct list_head chunk_full; @@ -80,6 +81,11 @@ struct nouveau_dmem { struct mutex mutex; }; +static inline struct nouveau_dmem *page_to_dmem(struct page *page) +{ + return container_of(page->pgmap, struct nouveau_dmem, pagemap); +} + struct nouveau_dmem_fault { struct nouveau_drm *drm; struct nouveau_fence *fence; @@ -96,14 +102,10 @@ struct nouveau_migrate { unsigned long dma_nr; }; -static void -nouveau_dmem_free(struct hmm_devmem *devmem, struct page *page) +static void nouveau_dmem_page_free(struct page *page) { - struct nouveau_dmem_chunk *chunk; - unsigned long idx; - - chunk = (void *)hmm_devmem_page_get_drvdata(page); - idx = page_to_pfn(page) - chunk->pfn_first; + struct nouveau_dmem_chunk *chunk = page->zone_device_data; + unsigned long idx = page_to_pfn(page) - chunk->pfn_first; /* * FIXME: @@ -148,11 +150,12 @@ nouveau_dmem_fault_alloc_and_copy(struct vm_area_struct *vma, if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) continue; - dpage = hmm_vma_alloc_locked_page(vma, addr); + dpage = alloc_page_vma(GFP_HIGHUSER, vma, addr); if (!dpage) { dst_pfns[i] = MIGRATE_PFN_ERROR; continue; } + lock_page(dpage); dst_pfns[i] = migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; @@ -194,7 +197,7 @@ nouveau_dmem_fault_alloc_and_copy(struct vm_area_struct *vma, dst_addr = fault->dma[fault->npages++]; - chunk = (void *)hmm_devmem_page_get_drvdata(spage); + chunk = spage->zone_device_data; src_addr = page_to_pfn(spage) - chunk->pfn_first; src_addr = (src_addr << PAGE_SHIFT) + chunk->bo->bo.offset; @@ -259,29 +262,21 @@ static const struct migrate_vma_ops nouveau_dmem_fault_migrate_ops = { .finalize_and_map = nouveau_dmem_fault_finalize_and_map, }; -static vm_fault_t -nouveau_dmem_fault(struct hmm_devmem *devmem, - struct vm_area_struct *vma, - unsigned long addr, - const struct page *page, - unsigned int flags, - pmd_t *pmdp) +static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) { - struct drm_device *drm_dev = dev_get_drvdata(devmem->device); + struct nouveau_dmem *dmem = page_to_dmem(vmf->page); unsigned long src[1] = {0}, dst[1] = {0}; - struct nouveau_dmem_fault fault = {0}; + struct nouveau_dmem_fault fault = { .drm = dmem->drm }; int ret; - - /* * FIXME what we really want is to find some heuristic to migrate more * than just one page on CPU fault. When such fault happens it is very * likely that more surrounding page will CPU fault too. */ - fault.drm = nouveau_drm(drm_dev); - ret = migrate_vma(&nouveau_dmem_fault_migrate_ops, vma, addr, - addr + PAGE_SIZE, src, dst, &fault); + ret = migrate_vma(&nouveau_dmem_fault_migrate_ops, vmf->vma, + vmf->address, vmf->address + PAGE_SIZE, + src, dst, &fault); if (ret) return VM_FAULT_SIGBUS; @@ -291,10 +286,9 @@ nouveau_dmem_fault(struct hmm_devmem *devmem, return 0; } -static const struct hmm_devmem_ops -nouveau_dmem_devmem_ops = { - .free = nouveau_dmem_free, - .fault = nouveau_dmem_fault, +static const struct dev_pagemap_ops nouveau_dmem_pagemap_ops = { + .page_free = nouveau_dmem_page_free, + .migrate_to_ram = nouveau_dmem_migrate_to_ram, }; static int @@ -580,7 +574,8 @@ void nouveau_dmem_init(struct nouveau_drm *drm) { struct device *device = drm->dev->dev; - unsigned long i, size; + struct resource *res; + unsigned long i, size, pfn_first; int ret; /* This only make sense on PASCAL or newer */ @@ -590,6 +585,7 @@ nouveau_dmem_init(struct nouveau_drm *drm) if (!(drm->dmem = kzalloc(sizeof(*drm->dmem), GFP_KERNEL))) return; + drm->dmem->drm = drm; mutex_init(&drm->dmem->mutex); INIT_LIST_HEAD(&drm->dmem->chunk_free); INIT_LIST_HEAD(&drm->dmem->chunk_full); @@ -599,11 +595,8 @@ nouveau_dmem_init(struct nouveau_drm *drm) /* Initialize migration dma helpers before registering memory */ ret = nouveau_dmem_migrate_init(drm); - if (ret) { - kfree(drm->dmem); - drm->dmem = NULL; - return; - } + if (ret) + goto out_free; /* * FIXME we need some kind of policy to decide how much VRAM we @@ -611,14 +604,16 @@ nouveau_dmem_init(struct nouveau_drm *drm) * and latter if we want to do thing like over commit then we * could revisit this. */ - drm->dmem->devmem = hmm_devmem_add(&nouveau_dmem_devmem_ops, - device, size); - if (IS_ERR(drm->dmem->devmem)) { - kfree(drm->dmem); - drm->dmem = NULL; - return; - } - + res = devm_request_free_mem_region(device, &iomem_resource, size); + if (IS_ERR(res)) + goto out_free; + drm->dmem->pagemap.type = MEMORY_DEVICE_PRIVATE; + drm->dmem->pagemap.res = *res; + drm->dmem->pagemap.ops = &nouveau_dmem_pagemap_ops; + if (IS_ERR(devm_memremap_pages(device, &drm->dmem->pagemap))) + goto out_free; + + pfn_first = res->start >> PAGE_SHIFT; for (i = 0; i < (size / DMEM_CHUNK_SIZE); ++i) { struct nouveau_dmem_chunk *chunk; struct page *page; @@ -631,17 +626,19 @@ nouveau_dmem_init(struct nouveau_drm *drm) } chunk->drm = drm; - chunk->pfn_first = drm->dmem->devmem->pfn_first; - chunk->pfn_first += (i * DMEM_CHUNK_NPAGES); + chunk->pfn_first = pfn_first + (i * DMEM_CHUNK_NPAGES); list_add_tail(&chunk->list, &drm->dmem->chunk_empty); page = pfn_to_page(chunk->pfn_first); - for (j = 0; j < DMEM_CHUNK_NPAGES; ++j, ++page) { - hmm_devmem_page_set_drvdata(page, (long)chunk); - } + for (j = 0; j < DMEM_CHUNK_NPAGES; ++j, ++page) + page->zone_device_data = chunk; } NV_INFO(drm, "DMEM: registered %ldMB of device memory\n", size >> 20); + return; +out_free: + kfree(drm->dmem); + drm->dmem = NULL; } static void @@ -697,7 +694,7 @@ nouveau_dmem_migrate_alloc_and_copy(struct vm_area_struct *vma, if (!dpage || dst_pfns[i] == MIGRATE_PFN_ERROR) continue; - chunk = (void *)hmm_devmem_page_get_drvdata(dpage); + chunk = dpage->zone_device_data; dst_addr = page_to_pfn(dpage) - chunk->pfn_first; dst_addr = (dst_addr << PAGE_SHIFT) + chunk->bo->bo.offset; @@ -832,13 +829,7 @@ out: static inline bool nouveau_dmem_page(struct nouveau_drm *drm, struct page *page) { - if (!is_device_private_page(page)) - return false; - - if (drm->dmem->devmem != page->pgmap->data) - return false; - - return true; + return is_device_private_page(page) && drm->dmem == page_to_dmem(page); } void @@ -867,7 +858,7 @@ nouveau_dmem_convert_pfn(struct nouveau_drm *drm, continue; } - chunk = (void *)hmm_devmem_page_get_drvdata(page); + chunk = page->zone_device_data; addr = page_to_pfn(page) - chunk->pfn_first; addr = (addr + chunk->bo->bo.mem.start) << PAGE_SHIFT; diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c index 93ed43c413f0..8c92374afcf2 100644 --- a/drivers/gpu/drm/nouveau/nouveau_svm.c +++ b/drivers/gpu/drm/nouveau/nouveau_svm.c @@ -649,7 +649,7 @@ nouveau_svm_fault(struct nvif_notify *notify) range.values = nouveau_svm_pfn_values; range.pfn_shift = NVIF_VMM_PFNMAP_V0_ADDR_SHIFT; again: - ret = hmm_vma_fault(&range, true); + ret = hmm_vma_fault(&svmm->mirror, &range, true); if (ret == 0) { mutex_lock(&svmm->mutex); if (!hmm_vma_range_done(&range)) { |