1caab277bSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2c8afe684SRob Clark /* 3c8afe684SRob Clark * Copyright (C) 2013 Red Hat 4c8afe684SRob Clark * Author: Rob Clark <robdclark@gmail.com> 5c8afe684SRob Clark */ 6c8afe684SRob Clark 70a0f0d8bSChristoph Hellwig #include <linux/dma-map-ops.h> 8f8546caaSYanteng Si #include <linux/vmalloc.h> 9c8afe684SRob Clark #include <linux/spinlock.h> 10c8afe684SRob Clark #include <linux/shmem_fs.h> 1105b84911SRob Clark #include <linux/dma-buf.h> 1201c8f1c4SDan Williams #include <linux/pfn_t.h> 13c8afe684SRob Clark 14feea39a8SSam Ravnborg #include <drm/drm_prime.h> 15feea39a8SSam Ravnborg 16c8afe684SRob Clark #include "msm_drv.h" 17fde5de6cSRob Clark #include "msm_fence.h" 18c8afe684SRob Clark #include "msm_gem.h" 197198e6b0SRob Clark #include "msm_gpu.h" 20871d812aSRob Clark #include "msm_mmu.h" 21c8afe684SRob Clark 22871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 23871d812aSRob Clark { 24871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 25871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 26871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 27871d812aSRob Clark priv->vram.paddr; 28871d812aSRob Clark } 29871d812aSRob Clark 30072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 31072f1f91SRob Clark { 32072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 33072f1f91SRob Clark return !msm_obj->vram_node; 34072f1f91SRob Clark } 35072f1f91SRob Clark 363de433c5SRob Clark /* 373de433c5SRob Clark * Cache sync.. this is a bit over-complicated, to fit dma-mapping 383de433c5SRob Clark * API. Really GPU cache is out of scope here (handled on cmdstream) 393de433c5SRob Clark * and all we need to do is invalidate newly allocated pages before 403de433c5SRob Clark * mapping to CPU as uncached/writecombine. 413de433c5SRob Clark * 423de433c5SRob Clark * On top of this, we have the added headache, that depending on 433de433c5SRob Clark * display generation, the display's iommu may be wired up to either 443de433c5SRob Clark * the toplevel drm device (mdss), or to the mdp sub-node, meaning 453de433c5SRob Clark * that here we either have dma-direct or iommu ops. 463de433c5SRob Clark * 473de433c5SRob Clark * Let this be a cautionary tail of abstraction gone wrong. 483de433c5SRob Clark */ 493de433c5SRob Clark 503de433c5SRob Clark static void sync_for_device(struct msm_gem_object *msm_obj) 513de433c5SRob Clark { 523de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 533de433c5SRob Clark 547690a33fSMarek Szyprowski dma_map_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 553de433c5SRob Clark } 563de433c5SRob Clark 573de433c5SRob Clark static void sync_for_cpu(struct msm_gem_object *msm_obj) 583de433c5SRob Clark { 593de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 603de433c5SRob Clark 617690a33fSMarek Szyprowski dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 623de433c5SRob Clark } 633de433c5SRob Clark 6417b704f1SRob Clark static void update_lru_active(struct drm_gem_object *obj) 6517b704f1SRob Clark { 6617b704f1SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 6717b704f1SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6817b704f1SRob Clark 6917b704f1SRob Clark GEM_WARN_ON(!msm_obj->pages); 7017b704f1SRob Clark 7117b704f1SRob Clark if (msm_obj->pin_count) { 7217b704f1SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.pinned, obj); 7317b704f1SRob Clark } else if (msm_obj->madv == MSM_MADV_WILLNEED) { 7417b704f1SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.willneed, obj); 7517b704f1SRob Clark } else { 7617b704f1SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_DONTNEED); 7717b704f1SRob Clark 7817b704f1SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.dontneed, obj); 7917b704f1SRob Clark } 8017b704f1SRob Clark } 8117b704f1SRob Clark 826c7c8fb8SRob Clark static void update_lru_locked(struct drm_gem_object *obj) 834a02a376SRob Clark { 844a02a376SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 854a02a376SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 864a02a376SRob Clark 874a02a376SRob Clark msm_gem_assert_locked(&msm_obj->base); 884a02a376SRob Clark 894a02a376SRob Clark if (!msm_obj->pages) { 904a02a376SRob Clark GEM_WARN_ON(msm_obj->pin_count); 914a02a376SRob Clark 926c7c8fb8SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.unbacked, obj); 934a02a376SRob Clark } else { 9417b704f1SRob Clark update_lru_active(obj); 954a02a376SRob Clark } 964a02a376SRob Clark } 974a02a376SRob Clark 986c7c8fb8SRob Clark static void update_lru(struct drm_gem_object *obj) 996c7c8fb8SRob Clark { 1006c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 1016c7c8fb8SRob Clark 1026c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 1036c7c8fb8SRob Clark update_lru_locked(obj); 1046c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 1056c7c8fb8SRob Clark } 1066c7c8fb8SRob Clark 107871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 1080e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 109871d812aSRob Clark { 110871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 111871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 112871d812aSRob Clark dma_addr_t paddr; 113871d812aSRob Clark struct page **p; 114871d812aSRob Clark int ret, i; 115871d812aSRob Clark 1162098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 117871d812aSRob Clark if (!p) 118871d812aSRob Clark return ERR_PTR(-ENOMEM); 119871d812aSRob Clark 1200e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1214e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 1220e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 123871d812aSRob Clark if (ret) { 1242098105eSMichal Hocko kvfree(p); 125871d812aSRob Clark return ERR_PTR(ret); 126871d812aSRob Clark } 127871d812aSRob Clark 128871d812aSRob Clark paddr = physaddr(obj); 129871d812aSRob Clark for (i = 0; i < npages; i++) { 130b3ed524fSChristian König p[i] = pfn_to_page(__phys_to_pfn(paddr)); 131871d812aSRob Clark paddr += PAGE_SIZE; 132871d812aSRob Clark } 133871d812aSRob Clark 134871d812aSRob Clark return p; 135871d812aSRob Clark } 136c8afe684SRob Clark 137c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 138c8afe684SRob Clark { 139c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 140c8afe684SRob Clark 141d4d7d363SRob Clark msm_gem_assert_locked(obj); 14207fcad0dSIskren Chernev 143c8afe684SRob Clark if (!msm_obj->pages) { 144c8afe684SRob Clark struct drm_device *dev = obj->dev; 145871d812aSRob Clark struct page **p; 146c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 147c8afe684SRob Clark 148072f1f91SRob Clark if (use_pages(obj)) 1490cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 150871d812aSRob Clark else 151871d812aSRob Clark p = get_pages_vram(obj, npages); 152871d812aSRob Clark 153c8afe684SRob Clark if (IS_ERR(p)) { 1546a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 155c8afe684SRob Clark PTR_ERR(p)); 156c8afe684SRob Clark return p; 157c8afe684SRob Clark } 158c8afe684SRob Clark 15962e3a3e3SPrakash Kamliya msm_obj->pages = p; 16062e3a3e3SPrakash Kamliya 161707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1621f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 16362e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 164c8afe684SRob Clark 1656a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 16662e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 16762e3a3e3SPrakash Kamliya return ptr; 16862e3a3e3SPrakash Kamliya } 169c8afe684SRob Clark 170c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 171c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 172c8afe684SRob Clark */ 1738b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 1743de433c5SRob Clark sync_for_device(msm_obj); 17564fcbde7SRob Clark 176901df24dSRob Clark update_lru(obj); 177c8afe684SRob Clark } 178c8afe684SRob Clark 179c8afe684SRob Clark return msm_obj->pages; 180c8afe684SRob Clark } 181c8afe684SRob Clark 1820e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1830e08270aSSushmita Susheelendra { 1840e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1850e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1860e08270aSSushmita Susheelendra 1870e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1880e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1890e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1900e08270aSSushmita Susheelendra 1910e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1920e08270aSSushmita Susheelendra } 1930e08270aSSushmita Susheelendra 194c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 195c8afe684SRob Clark { 196c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 197c8afe684SRob Clark 198c8afe684SRob Clark if (msm_obj->pages) { 1993976626eSBen Hutchings if (msm_obj->sgt) { 2003976626eSBen Hutchings /* For non-cached buffers, ensure the new 2013976626eSBen Hutchings * pages are clean because display controller, 2023976626eSBen Hutchings * GPU, etc. are not coherent: 203c8afe684SRob Clark */ 2048b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 2053de433c5SRob Clark sync_for_cpu(msm_obj); 20662e3a3e3SPrakash Kamliya 207c8afe684SRob Clark sg_free_table(msm_obj->sgt); 208c8afe684SRob Clark kfree(msm_obj->sgt); 209b9a31d0dSRob Clark msm_obj->sgt = NULL; 2103976626eSBen Hutchings } 211c8afe684SRob Clark 212072f1f91SRob Clark if (use_pages(obj)) 213c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 2140e08270aSSushmita Susheelendra else 2150e08270aSSushmita Susheelendra put_pages_vram(obj); 216871d812aSRob Clark 217c8afe684SRob Clark msm_obj->pages = NULL; 218b352ba54SRob Clark update_lru(obj); 219c8afe684SRob Clark } 220c8afe684SRob Clark } 221c8afe684SRob Clark 222e7cd5ee9SRob Clark static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj) 22305b84911SRob Clark { 2246c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 2250e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 22605b84911SRob Clark struct page **p; 2270e08270aSSushmita Susheelendra 228d4d7d363SRob Clark msm_gem_assert_locked(obj); 2290e08270aSSushmita Susheelendra 23090643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 2310e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 2320e08270aSSushmita Susheelendra } 2330e08270aSSushmita Susheelendra 23405b84911SRob Clark p = get_pages(obj); 2356c7c8fb8SRob Clark if (IS_ERR(p)) 2366c7c8fb8SRob Clark return p; 2376c7c8fb8SRob Clark 2386c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 2396c7c8fb8SRob Clark msm_obj->pin_count++; 2406c7c8fb8SRob Clark update_lru_locked(obj); 2416c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 24210f76165SRob Clark 24305b84911SRob Clark return p; 24405b84911SRob Clark } 24505b84911SRob Clark 246e7cd5ee9SRob Clark struct page **msm_gem_pin_pages(struct drm_gem_object *obj) 247e7cd5ee9SRob Clark { 248e7cd5ee9SRob Clark struct page **p; 249e7cd5ee9SRob Clark 250e7cd5ee9SRob Clark msm_gem_lock(obj); 251e7cd5ee9SRob Clark p = msm_gem_pin_pages_locked(obj); 252e7cd5ee9SRob Clark msm_gem_unlock(obj); 253e7cd5ee9SRob Clark 254e7cd5ee9SRob Clark return p; 255e7cd5ee9SRob Clark } 256e7cd5ee9SRob Clark 257e7cd5ee9SRob Clark void msm_gem_unpin_pages(struct drm_gem_object *obj) 25805b84911SRob Clark { 25910f76165SRob Clark msm_gem_lock(obj); 2609fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 26110f76165SRob Clark msm_gem_unlock(obj); 26205b84911SRob Clark } 26305b84911SRob Clark 264af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 265af9b3547SJonathan Marek { 2668b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 267af9b3547SJonathan Marek return pgprot_writecombine(prot); 268af9b3547SJonathan Marek return prot; 269af9b3547SJonathan Marek } 270af9b3547SJonathan Marek 2713c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 272c8afe684SRob Clark { 27311bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 274c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2750e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 276c8afe684SRob Clark struct page **pages; 277c8afe684SRob Clark unsigned long pfn; 278c8afe684SRob Clark pgoff_t pgoff; 279a5f74ec7SSouptick Joarder int err; 280a5f74ec7SSouptick Joarder vm_fault_t ret; 281c8afe684SRob Clark 2820e08270aSSushmita Susheelendra /* 2830e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2840e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 285d78d383aSRob Clark */ 286a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 287a5f74ec7SSouptick Joarder if (err) { 288a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 289c8afe684SRob Clark goto out; 290a5f74ec7SSouptick Joarder } 291c8afe684SRob Clark 29290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 293a6ae74c9SRob Clark msm_gem_unlock(obj); 2940e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2950e08270aSSushmita Susheelendra } 2960e08270aSSushmita Susheelendra 297c8afe684SRob Clark /* make sure we have pages attached now */ 298c8afe684SRob Clark pages = get_pages(obj); 299c8afe684SRob Clark if (IS_ERR(pages)) { 300a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 301c8afe684SRob Clark goto out_unlock; 302c8afe684SRob Clark } 303c8afe684SRob Clark 304c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 3051a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 306c8afe684SRob Clark 307871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 308c8afe684SRob Clark 3091a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 310c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 311c8afe684SRob Clark 3128246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 3138246913aSRob Clark 314c8afe684SRob Clark out_unlock: 315a6ae74c9SRob Clark msm_gem_unlock(obj); 316c8afe684SRob Clark out: 317a5f74ec7SSouptick Joarder return ret; 318c8afe684SRob Clark } 319c8afe684SRob Clark 320c8afe684SRob Clark /** get mmap offset */ 321c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 322c8afe684SRob Clark { 323c8afe684SRob Clark struct drm_device *dev = obj->dev; 324c8afe684SRob Clark int ret; 325c8afe684SRob Clark 326d4d7d363SRob Clark msm_gem_assert_locked(obj); 327c8afe684SRob Clark 328c8afe684SRob Clark /* Make it mmapable */ 329c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 330c8afe684SRob Clark 331c8afe684SRob Clark if (ret) { 3326a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 333c8afe684SRob Clark return 0; 334c8afe684SRob Clark } 335c8afe684SRob Clark 336c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 337c8afe684SRob Clark } 338c8afe684SRob Clark 339c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 340c8afe684SRob Clark { 341c8afe684SRob Clark uint64_t offset; 3420e08270aSSushmita Susheelendra 343a6ae74c9SRob Clark msm_gem_lock(obj); 344c8afe684SRob Clark offset = mmap_offset(obj); 345a6ae74c9SRob Clark msm_gem_unlock(obj); 346c8afe684SRob Clark return offset; 347c8afe684SRob Clark } 348c8afe684SRob Clark 3494b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3504b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3514b85f7f5SRob Clark { 3524b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3534b85f7f5SRob Clark struct msm_gem_vma *vma; 3544b85f7f5SRob Clark 355d4d7d363SRob Clark msm_gem_assert_locked(obj); 3560e08270aSSushmita Susheelendra 357fc2f0756SRob Clark vma = msm_gem_vma_new(aspace); 3584b85f7f5SRob Clark if (!vma) 3594b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3604b85f7f5SRob Clark 3614b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3624b85f7f5SRob Clark 3634b85f7f5SRob Clark return vma; 3644b85f7f5SRob Clark } 3654b85f7f5SRob Clark 3664b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3674b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3684b85f7f5SRob Clark { 3694b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3704b85f7f5SRob Clark struct msm_gem_vma *vma; 3714b85f7f5SRob Clark 372d4d7d363SRob Clark msm_gem_assert_locked(obj); 3734b85f7f5SRob Clark 3744b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3754b85f7f5SRob Clark if (vma->aspace == aspace) 3764b85f7f5SRob Clark return vma; 3774b85f7f5SRob Clark } 3784b85f7f5SRob Clark 3794b85f7f5SRob Clark return NULL; 3804b85f7f5SRob Clark } 3814b85f7f5SRob Clark 3824b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3834b85f7f5SRob Clark { 3844b85f7f5SRob Clark if (!vma) 3854b85f7f5SRob Clark return; 3864b85f7f5SRob Clark 3874b85f7f5SRob Clark list_del(&vma->list); 3884b85f7f5SRob Clark kfree(vma); 3894b85f7f5SRob Clark } 3904b85f7f5SRob Clark 39137c68900SLee Jones /* 39220d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 39320d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 39420d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 39520d0ae2fSRob Clark * mapping. 39620d0ae2fSRob Clark */ 3974fe5f65eSRob Clark static void 39820d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3994fe5f65eSRob Clark { 4004fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4019b73bde3SIskren Chernev struct msm_gem_vma *vma; 4024fe5f65eSRob Clark 403d4d7d363SRob Clark msm_gem_assert_locked(obj); 4044fe5f65eSRob Clark 4059b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 406d67f1b6dSBrian Masney if (vma->aspace) { 407fc2f0756SRob Clark msm_gem_vma_purge(vma); 40820d0ae2fSRob Clark if (close) 409fc2f0756SRob Clark msm_gem_vma_close(vma); 410d67f1b6dSBrian Masney } 4119b73bde3SIskren Chernev } 4129b73bde3SIskren Chernev } 4139b73bde3SIskren Chernev 4149b73bde3SIskren Chernev /* Called with msm_obj locked */ 4159b73bde3SIskren Chernev static void 4169b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 4174fe5f65eSRob Clark { 4184fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4194fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 4204fe5f65eSRob Clark 421d4d7d363SRob Clark msm_gem_assert_locked(obj); 4224fe5f65eSRob Clark 4234b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 4244b85f7f5SRob Clark del_vma(vma); 4254fe5f65eSRob Clark } 4264fe5f65eSRob Clark } 4274fe5f65eSRob Clark 428522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 429522f1abfSRob Clark struct msm_gem_address_space *aspace, 430d3b8877eSJonathan Marek u64 range_start, u64 range_end) 431c8afe684SRob Clark { 4324b85f7f5SRob Clark struct msm_gem_vma *vma; 433c8afe684SRob Clark 434d4d7d363SRob Clark msm_gem_assert_locked(obj); 435cb1e3818SRob Clark 4364b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 437871d812aSRob Clark 4384b85f7f5SRob Clark if (!vma) { 439522f1abfSRob Clark int ret; 440522f1abfSRob Clark 4414b85f7f5SRob Clark vma = add_vma(obj, aspace); 442c0ee9794SJordan Crouse if (IS_ERR(vma)) 443522f1abfSRob Clark return vma; 4444b85f7f5SRob Clark 445fc2f0756SRob Clark ret = msm_gem_vma_init(vma, obj->size, 446d3b8877eSJonathan Marek range_start, range_end); 447c0ee9794SJordan Crouse if (ret) { 448c0ee9794SJordan Crouse del_vma(vma); 449522f1abfSRob Clark return ERR_PTR(ret); 450c8afe684SRob Clark } 451522f1abfSRob Clark } else { 452522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 453522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4544b85f7f5SRob Clark } 4554b85f7f5SRob Clark 456522f1abfSRob Clark return vma; 457c0ee9794SJordan Crouse } 4584b85f7f5SRob Clark 45927674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 460c0ee9794SJordan Crouse { 461c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 462c0ee9794SJordan Crouse struct page **pages; 46364fcbde7SRob Clark int ret, prot = IOMMU_READ; 464bbc2cd07SRob Clark 465bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 466bbc2cd07SRob Clark prot |= IOMMU_WRITE; 467c0ee9794SJordan Crouse 4680b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4690b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4700b462d7aSJonathan Marek 471d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 472d12e3390SJonathan Marek prot |= IOMMU_CACHE; 473d12e3390SJonathan Marek 474d4d7d363SRob Clark msm_gem_assert_locked(obj); 475c0ee9794SJordan Crouse 47690643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 477c0ee9794SJordan Crouse return -EBUSY; 478c0ee9794SJordan Crouse 4799fd5ff7fSRob Clark pages = msm_gem_pin_pages_locked(obj); 480c0ee9794SJordan Crouse if (IS_ERR(pages)) 481c0ee9794SJordan Crouse return PTR_ERR(pages); 482c0ee9794SJordan Crouse 483fc2f0756SRob Clark ret = msm_gem_vma_map(vma, prot, msm_obj->sgt, obj->size); 4849fd5ff7fSRob Clark if (ret) 4859fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 48664fcbde7SRob Clark 48764fcbde7SRob Clark return ret; 488c0ee9794SJordan Crouse } 489c0ee9794SJordan Crouse 490311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 49127674c66SRob Clark { 4926c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 49327674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 49427674c66SRob Clark 495d4d7d363SRob Clark msm_gem_assert_locked(obj); 49627674c66SRob Clark 4976c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 49827674c66SRob Clark msm_obj->pin_count--; 49927674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 5006c7c8fb8SRob Clark update_lru_locked(obj); 5016c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 50227674c66SRob Clark } 50327674c66SRob Clark 50417b704f1SRob Clark /* Special unpin path for use in fence-signaling path, avoiding the need 50517b704f1SRob Clark * to hold the obj lock by only depending on things that a protected by 50617b704f1SRob Clark * the LRU lock. In particular we know that that we already have backing 50717b704f1SRob Clark * and and that the object's dma_resv has the fence for the current 50817b704f1SRob Clark * submit/job which will prevent us racing against page eviction. 50917b704f1SRob Clark */ 51017b704f1SRob Clark void msm_gem_unpin_active(struct drm_gem_object *obj) 51117b704f1SRob Clark { 51217b704f1SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 51317b704f1SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 51417b704f1SRob Clark 51517b704f1SRob Clark mutex_lock(&priv->lru.lock); 51617b704f1SRob Clark msm_obj->pin_count--; 51717b704f1SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 51817b704f1SRob Clark update_lru_active(obj); 51917b704f1SRob Clark mutex_unlock(&priv->lru.lock); 52017b704f1SRob Clark } 52117b704f1SRob Clark 52227674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 52327674c66SRob Clark struct msm_gem_address_space *aspace) 52427674c66SRob Clark { 52527674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 52627674c66SRob Clark } 52727674c66SRob Clark 528e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 529d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 530d3b8877eSJonathan Marek u64 range_start, u64 range_end) 531c0ee9794SJordan Crouse { 532522f1abfSRob Clark struct msm_gem_vma *vma; 533c0ee9794SJordan Crouse int ret; 534c0ee9794SJordan Crouse 535d4d7d363SRob Clark msm_gem_assert_locked(obj); 536c0ee9794SJordan Crouse 537522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 538522f1abfSRob Clark if (IS_ERR(vma)) 539522f1abfSRob Clark return PTR_ERR(vma); 540c0ee9794SJordan Crouse 54127674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 542c0ee9794SJordan Crouse if (!ret) 543522f1abfSRob Clark *iova = vma->iova; 544c0ee9794SJordan Crouse 545c8afe684SRob Clark return ret; 546c8afe684SRob Clark } 547c8afe684SRob Clark 548e4b87d22SRob Clark /* 549e4b87d22SRob Clark * get iova and pin it. Should have a matching put 550e4b87d22SRob Clark * limits iova to specified range (in pages) 551e4b87d22SRob Clark */ 552e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 553e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 554e4b87d22SRob Clark u64 range_start, u64 range_end) 555e4b87d22SRob Clark { 556e4b87d22SRob Clark int ret; 557e4b87d22SRob Clark 558e4b87d22SRob Clark msm_gem_lock(obj); 559e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 560e4b87d22SRob Clark msm_gem_unlock(obj); 561e4b87d22SRob Clark 562e4b87d22SRob Clark return ret; 563e4b87d22SRob Clark } 564e4b87d22SRob Clark 565d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 566d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 567d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 568d3b8877eSJonathan Marek { 569d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 570d3b8877eSJonathan Marek } 571d3b8877eSJonathan Marek 5727ad0e8cfSJordan Crouse /* 5737ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5747ad0e8cfSJordan Crouse * valid for the life of the object 5757ad0e8cfSJordan Crouse */ 5769fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5779fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5789fe041f6SJordan Crouse { 579522f1abfSRob Clark struct msm_gem_vma *vma; 580522f1abfSRob Clark int ret = 0; 5819fe041f6SJordan Crouse 582a6ae74c9SRob Clark msm_gem_lock(obj); 583522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 584522f1abfSRob Clark if (IS_ERR(vma)) { 585522f1abfSRob Clark ret = PTR_ERR(vma); 586522f1abfSRob Clark } else { 587522f1abfSRob Clark *iova = vma->iova; 588522f1abfSRob Clark } 589a6ae74c9SRob Clark msm_gem_unlock(obj); 5909fe041f6SJordan Crouse 5919fe041f6SJordan Crouse return ret; 5929fe041f6SJordan Crouse } 5939fe041f6SJordan Crouse 594a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 5958bdcd949SRob Clark struct msm_gem_address_space *aspace) 5962638d90aSRob Clark { 597a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 5984b85f7f5SRob Clark 599a636a0ffSRob Clark if (!vma) 600a636a0ffSRob Clark return 0; 6014b85f7f5SRob Clark 602a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 603a636a0ffSRob Clark return -EBUSY; 604a636a0ffSRob Clark 605fc2f0756SRob Clark msm_gem_vma_purge(vma); 606fc2f0756SRob Clark msm_gem_vma_close(vma); 607a636a0ffSRob Clark del_vma(vma); 608a636a0ffSRob Clark 609a636a0ffSRob Clark return 0; 6102638d90aSRob Clark } 6112638d90aSRob Clark 6127ad0e8cfSJordan Crouse /* 613a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 614a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 615a636a0ffSRob Clark * the life of the object. 616a636a0ffSRob Clark * 617a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 618e4b87d22SRob Clark */ 619a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 620a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 621e4b87d22SRob Clark { 622a636a0ffSRob Clark int ret = 0; 623a636a0ffSRob Clark 624a636a0ffSRob Clark msm_gem_lock(obj); 625a636a0ffSRob Clark if (!iova) { 626a636a0ffSRob Clark ret = clear_iova(obj, aspace); 627a636a0ffSRob Clark } else { 628e4b87d22SRob Clark struct msm_gem_vma *vma; 629a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 630a636a0ffSRob Clark if (IS_ERR(vma)) { 631a636a0ffSRob Clark ret = PTR_ERR(vma); 632a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 633a636a0ffSRob Clark clear_iova(obj, aspace); 634a636a0ffSRob Clark ret = -EBUSY; 63564fcbde7SRob Clark } 636e4b87d22SRob Clark } 637a636a0ffSRob Clark msm_gem_unlock(obj); 638a636a0ffSRob Clark 639a636a0ffSRob Clark return ret; 640a636a0ffSRob Clark } 641e4b87d22SRob Clark 642e4b87d22SRob Clark /* 6437ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 6447ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 6457ad0e8cfSJordan Crouse * to get rid of it 6467ad0e8cfSJordan Crouse */ 6477ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 6488bdcd949SRob Clark struct msm_gem_address_space *aspace) 649c8afe684SRob Clark { 65027674c66SRob Clark struct msm_gem_vma *vma; 65127674c66SRob Clark 652a6ae74c9SRob Clark msm_gem_lock(obj); 65327674c66SRob Clark vma = lookup_vma(obj, aspace); 65427674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 655fc2f0756SRob Clark msm_gem_vma_unpin(vma); 656311e03c2SRob Clark msm_gem_unpin_locked(obj); 65727674c66SRob Clark } 658a6ae74c9SRob Clark msm_gem_unlock(obj); 659c8afe684SRob Clark } 660c8afe684SRob Clark 661c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 662c8afe684SRob Clark struct drm_mode_create_dumb *args) 663c8afe684SRob Clark { 664c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 665c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 666c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 6670815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 668c8afe684SRob Clark } 669c8afe684SRob Clark 670c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 671c8afe684SRob Clark uint32_t handle, uint64_t *offset) 672c8afe684SRob Clark { 673c8afe684SRob Clark struct drm_gem_object *obj; 674c8afe684SRob Clark int ret = 0; 675c8afe684SRob Clark 676c8afe684SRob Clark /* GEM does all our handle to object mapping */ 677a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 678c8afe684SRob Clark if (obj == NULL) { 679c8afe684SRob Clark ret = -ENOENT; 680c8afe684SRob Clark goto fail; 681c8afe684SRob Clark } 682c8afe684SRob Clark 683c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 684c8afe684SRob Clark 685f7d33950SEmil Velikov drm_gem_object_put(obj); 686c8afe684SRob Clark 687c8afe684SRob Clark fail: 688c8afe684SRob Clark return ret; 689c8afe684SRob Clark } 690c8afe684SRob Clark 691fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 692c8afe684SRob Clark { 6930e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 694d6ae7d1cSRob Clark struct page **pages; 6950e08270aSSushmita Susheelendra int ret = 0; 6960e08270aSSushmita Susheelendra 697d4d7d363SRob Clark msm_gem_assert_locked(obj); 698e4b87d22SRob Clark 6998b6b7d84SDaniel Vetter if (obj->import_attach) 7008b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 7018b6b7d84SDaniel Vetter 70290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 7036a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 704fad33f4bSRob Clark msm_obj->madv, madv); 7050e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 706c8afe684SRob Clark } 707c8afe684SRob Clark 708d6ae7d1cSRob Clark pages = msm_gem_pin_pages_locked(obj); 709d6ae7d1cSRob Clark if (IS_ERR(pages)) 710d6ae7d1cSRob Clark return ERR_CAST(pages); 711d6ae7d1cSRob Clark 7120e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 713a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 7140e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 7150e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 716a6ae74c9SRob Clark * hold msm_obj lock) 7170e08270aSSushmita Susheelendra */ 7180e08270aSSushmita Susheelendra msm_obj->vmap_count++; 7190e08270aSSushmita Susheelendra 7200e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 7210e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 722af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 7230e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 7240e08270aSSushmita Susheelendra ret = -ENOMEM; 7250e08270aSSushmita Susheelendra goto fail; 7260e08270aSSushmita Susheelendra } 7270e08270aSSushmita Susheelendra } 7280e08270aSSushmita Susheelendra 7290e08270aSSushmita Susheelendra return msm_obj->vaddr; 7300e08270aSSushmita Susheelendra 7310e08270aSSushmita Susheelendra fail: 732e1e9db2cSRob Clark msm_obj->vmap_count--; 733d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7340e08270aSSushmita Susheelendra return ERR_PTR(ret); 73518f23049SRob Clark } 73618f23049SRob Clark 737e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 738e4b87d22SRob Clark { 739e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 740e4b87d22SRob Clark } 741e4b87d22SRob Clark 742fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 743fad33f4bSRob Clark { 744e4b87d22SRob Clark void *ret; 745e4b87d22SRob Clark 746e4b87d22SRob Clark msm_gem_lock(obj); 747e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 748e4b87d22SRob Clark msm_gem_unlock(obj); 749e4b87d22SRob Clark 750e4b87d22SRob Clark return ret; 751fad33f4bSRob Clark } 752fad33f4bSRob Clark 753fad33f4bSRob Clark /* 754fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 755fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 756fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 757fad33f4bSRob Clark * active list. 758fad33f4bSRob Clark */ 759fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 760fad33f4bSRob Clark { 761fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 762fad33f4bSRob Clark } 763fad33f4bSRob Clark 764e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 76518f23049SRob Clark { 7660e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7670e08270aSSushmita Susheelendra 768d4d7d363SRob Clark msm_gem_assert_locked(obj); 76990643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 770e4b87d22SRob Clark 7710e08270aSSushmita Susheelendra msm_obj->vmap_count--; 772d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7734cd33c48SRob Clark } 7740e08270aSSushmita Susheelendra 7750e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7764cd33c48SRob Clark { 777a6ae74c9SRob Clark msm_gem_lock(obj); 778e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 779a6ae74c9SRob Clark msm_gem_unlock(obj); 7804cd33c48SRob Clark } 7814cd33c48SRob Clark 7824cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7834cd33c48SRob Clark * false or -errno. 7844cd33c48SRob Clark */ 7854cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7864cd33c48SRob Clark { 7876c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 7884cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7894cd33c48SRob Clark 790a6ae74c9SRob Clark msm_gem_lock(obj); 7914cd33c48SRob Clark 7926c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 7936c7c8fb8SRob Clark 7944cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 7954cd33c48SRob Clark msm_obj->madv = madv; 7964cd33c48SRob Clark 7970e08270aSSushmita Susheelendra madv = msm_obj->madv; 7980e08270aSSushmita Susheelendra 7993edfa30fSRob Clark /* If the obj is inactive, we might need to move it 8003edfa30fSRob Clark * between inactive lists 8013edfa30fSRob Clark */ 8026c7c8fb8SRob Clark update_lru_locked(obj); 8036c7c8fb8SRob Clark 8046c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 8053edfa30fSRob Clark 806a6ae74c9SRob Clark msm_gem_unlock(obj); 8070e08270aSSushmita Susheelendra 8080e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 8094cd33c48SRob Clark } 8104cd33c48SRob Clark 811599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 81268209390SRob Clark { 81368209390SRob Clark struct drm_device *dev = obj->dev; 8146c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 81568209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 81668209390SRob Clark 817d4d7d363SRob Clark msm_gem_assert_locked(obj); 81890643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 81968209390SRob Clark 82020d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 82120d0ae2fSRob Clark put_iova_spaces(obj, true); 8220e08270aSSushmita Susheelendra 823599089c6SRob Clark msm_gem_vunmap(obj); 82468209390SRob Clark 82581d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 82681d4d597SRob Clark 82768209390SRob Clark put_pages(obj); 82868209390SRob Clark 8299b73bde3SIskren Chernev put_iova_vmas(obj); 8309b73bde3SIskren Chernev 8316c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 8326c7c8fb8SRob Clark /* A one-way transition: */ 83368209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 8346c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 83568209390SRob Clark 83668209390SRob Clark drm_gem_free_mmap_offset(obj); 83768209390SRob Clark 83868209390SRob Clark /* Our goal here is to return as much of the memory as 83968209390SRob Clark * is possible back to the system as we are called from OOM. 84068209390SRob Clark * To do this we must instruct the shmfs to drop all of its 84168209390SRob Clark * backing pages, *now*. 84268209390SRob Clark */ 84368209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 84468209390SRob Clark 84568209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 84668209390SRob Clark 0, (loff_t)-1); 84768209390SRob Clark } 84868209390SRob Clark 84937c68900SLee Jones /* 85063f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 85163f17ef8SRob Clark */ 85263f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 85363f17ef8SRob Clark { 85463f17ef8SRob Clark struct drm_device *dev = obj->dev; 85563f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 85663f17ef8SRob Clark 857d4d7d363SRob Clark msm_gem_assert_locked(obj); 85863f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 85963f17ef8SRob Clark 86063f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 86163f17ef8SRob Clark put_iova_spaces(obj, false); 86263f17ef8SRob Clark 86363f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 86463f17ef8SRob Clark 86563f17ef8SRob Clark put_pages(obj); 86663f17ef8SRob Clark } 86763f17ef8SRob Clark 868599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 869e1e9db2cSRob Clark { 870e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 871e1e9db2cSRob Clark 872d4d7d363SRob Clark msm_gem_assert_locked(obj); 8730e08270aSSushmita Susheelendra 87490643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 875e1e9db2cSRob Clark return; 876e1e9db2cSRob Clark 877e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 878e1e9db2cSRob Clark msm_obj->vaddr = NULL; 879e1e9db2cSRob Clark } 880e1e9db2cSRob Clark 88101780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 88201780d02SRob Clark { 883d4d7d363SRob Clark msm_gem_assert_locked(obj); 88401780d02SRob Clark 88501780d02SRob Clark if (to_msm_bo(obj)->pin_count) 88601780d02SRob Clark return true; 88701780d02SRob Clark 88801780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 88901780d02SRob Clark } 89001780d02SRob Clark 891ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 892ba00c3f2SRob Clark { 893b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 894f755e227SChris Wilson unsigned long remain = 895f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 896f755e227SChris Wilson long ret; 897b6295f9aSRob Clark 898*b5a24e13SRob Clark if (op & MSM_PREP_BOOST) { 899*b5a24e13SRob Clark dma_resv_set_deadline(obj->resv, dma_resv_usage_rw(write), 900*b5a24e13SRob Clark ktime_get()); 901*b5a24e13SRob Clark } 902*b5a24e13SRob Clark 9037bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 9047bc80a54SChristian König true, remain); 905f755e227SChris Wilson if (ret == 0) 906f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 907f755e227SChris Wilson else if (ret < 0) 908f755e227SChris Wilson return ret; 909ba00c3f2SRob Clark 9107198e6b0SRob Clark /* TODO cache maintenance */ 9117198e6b0SRob Clark 912b6295f9aSRob Clark return 0; 9137198e6b0SRob Clark } 9147198e6b0SRob Clark 9157198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 9167198e6b0SRob Clark { 9177198e6b0SRob Clark /* TODO cache maintenance */ 918c8afe684SRob Clark return 0; 919c8afe684SRob Clark } 920c8afe684SRob Clark 921c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 922528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 923528107c8SRob Clark struct msm_gem_stats *stats) 924c8afe684SRob Clark { 925c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 92652791eeeSChristian König struct dma_resv *robj = obj->resv; 9274b85f7f5SRob Clark struct msm_gem_vma *vma; 928c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9294cd33c48SRob Clark const char *madv; 930c8afe684SRob Clark 931a6ae74c9SRob Clark msm_gem_lock(obj); 932b6295f9aSRob Clark 933528107c8SRob Clark stats->all.count++; 934528107c8SRob Clark stats->all.size += obj->size; 935528107c8SRob Clark 936da53d8b5SRob Clark if (msm_gem_active(obj)) { 937528107c8SRob Clark stats->active.count++; 938528107c8SRob Clark stats->active.size += obj->size; 939528107c8SRob Clark } 940528107c8SRob Clark 941f48f3563SRob Clark if (msm_obj->pages) { 942f48f3563SRob Clark stats->resident.count++; 943f48f3563SRob Clark stats->resident.size += obj->size; 944f48f3563SRob Clark } 945f48f3563SRob Clark 9464cd33c48SRob Clark switch (msm_obj->madv) { 9474cd33c48SRob Clark case __MSM_MADV_PURGED: 948528107c8SRob Clark stats->purged.count++; 949528107c8SRob Clark stats->purged.size += obj->size; 9504cd33c48SRob Clark madv = " purged"; 9514cd33c48SRob Clark break; 9524cd33c48SRob Clark case MSM_MADV_DONTNEED: 9530054eeb7SRob Clark stats->purgeable.count++; 9540054eeb7SRob Clark stats->purgeable.size += obj->size; 9554cd33c48SRob Clark madv = " purgeable"; 9564cd33c48SRob Clark break; 9574cd33c48SRob Clark case MSM_MADV_WILLNEED: 9584cd33c48SRob Clark default: 9594cd33c48SRob Clark madv = ""; 9604cd33c48SRob Clark break; 9614cd33c48SRob Clark } 9624cd33c48SRob Clark 963575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 964da53d8b5SRob Clark msm_obj->flags, msm_gem_active(obj) ? 'A' : 'I', 9652c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 966667ce33eSRob Clark off, msm_obj->vaddr); 967667ce33eSRob Clark 9680815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 969667ce33eSRob Clark 970575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 971575f0485SJordan Crouse 972575f0485SJordan Crouse seq_puts(m, " vmas:"); 973575f0485SJordan Crouse 97425faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 97525faf2f2SRob Clark const char *name, *comm; 97625faf2f2SRob Clark if (vma->aspace) { 97725faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 97825faf2f2SRob Clark struct task_struct *task = 97925faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 98025faf2f2SRob Clark if (task) { 98125faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 982ac3e4f42SRob Clark put_task_struct(task); 98325faf2f2SRob Clark } else { 98425faf2f2SRob Clark comm = NULL; 98525faf2f2SRob Clark } 98625faf2f2SRob Clark name = aspace->name; 98725faf2f2SRob Clark } else { 98825faf2f2SRob Clark name = comm = NULL; 98925faf2f2SRob Clark } 99025faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 99125faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 99225faf2f2SRob Clark vma->aspace, vma->iova, 99325faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 994ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 99525faf2f2SRob Clark kfree(comm); 99625faf2f2SRob Clark } 997575f0485SJordan Crouse 998575f0485SJordan Crouse seq_puts(m, "\n"); 999575f0485SJordan Crouse } 1000b6295f9aSRob Clark 1001f19ee2f3SChristian König dma_resv_describe(robj, m); 1002a6ae74c9SRob Clark msm_gem_unlock(obj); 1003c8afe684SRob Clark } 1004c8afe684SRob Clark 1005c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 1006c8afe684SRob Clark { 1007528107c8SRob Clark struct msm_gem_stats stats = {}; 1008c8afe684SRob Clark struct msm_gem_object *msm_obj; 1009c8afe684SRob Clark 10100815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 10116ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 1012c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 1013575f0485SJordan Crouse seq_puts(m, " "); 1014528107c8SRob Clark msm_gem_describe(obj, m, &stats); 1015c8afe684SRob Clark } 1016c8afe684SRob Clark 1017528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 1018528107c8SRob Clark stats.all.count, stats.all.size); 1019528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 1020528107c8SRob Clark stats.active.count, stats.active.size); 1021f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1022f48f3563SRob Clark stats.resident.count, stats.resident.size); 1023f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10240054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1025528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1026528107c8SRob Clark stats.purged.count, stats.purged.size); 1027c8afe684SRob Clark } 1028c8afe684SRob Clark #endif 1029c8afe684SRob Clark 1030030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 10316867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 1032c8afe684SRob Clark { 1033c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 103448e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 103548e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 103648e7f183SKristian H. Kristensen 10376ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10386ed0897cSRob Clark list_del(&msm_obj->node); 10396ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10406ed0897cSRob Clark 104120d0ae2fSRob Clark put_iova_spaces(obj, true); 1042c8afe684SRob Clark 104305b84911SRob Clark if (obj->import_attach) { 104490643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 104505b84911SRob Clark 104605b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 104705b84911SRob Clark * ours, just free the array we allocated: 104805b84911SRob Clark */ 10492098105eSMichal Hocko kvfree(msm_obj->pages); 105005b84911SRob Clark 105157f04815SRob Clark put_iova_vmas(obj); 105257f04815SRob Clark 1053f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 105405b84911SRob Clark } else { 1055599089c6SRob Clark msm_gem_vunmap(obj); 1056c8afe684SRob Clark put_pages(obj); 105757f04815SRob Clark put_iova_vmas(obj); 105805b84911SRob Clark } 1059c8afe684SRob Clark 1060c8afe684SRob Clark drm_gem_object_release(obj); 1061c8afe684SRob Clark 1062c8afe684SRob Clark kfree(msm_obj); 1063c8afe684SRob Clark } 1064c8afe684SRob Clark 1065510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1066510410bfSThomas Zimmermann { 1067510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1068510410bfSThomas Zimmermann 10691c71222eSSuren Baghdasaryan vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP); 1070510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1071510410bfSThomas Zimmermann 1072510410bfSThomas Zimmermann return 0; 1073510410bfSThomas Zimmermann } 1074510410bfSThomas Zimmermann 1075c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1076c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10770815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10780815d774SJordan Crouse char *name) 1079c8afe684SRob Clark { 1080c8afe684SRob Clark struct drm_gem_object *obj; 1081c8afe684SRob Clark int ret; 1082c8afe684SRob Clark 1083c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1084c8afe684SRob Clark 1085c8afe684SRob Clark if (IS_ERR(obj)) 1086c8afe684SRob Clark return PTR_ERR(obj); 1087c8afe684SRob Clark 10880815d774SJordan Crouse if (name) 10890815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10900815d774SJordan Crouse 1091c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1092c8afe684SRob Clark 1093c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1094f7d33950SEmil Velikov drm_gem_object_put(obj); 1095c8afe684SRob Clark 1096c8afe684SRob Clark return ret; 1097c8afe684SRob Clark } 1098c8afe684SRob Clark 10993c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 11003c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 11013c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 11023c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 11033c9edd9cSThomas Zimmermann }; 11043c9edd9cSThomas Zimmermann 11053c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 11063c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11073c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11083c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11093c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11103c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11113c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1112510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 11133c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11143c9edd9cSThomas Zimmermann }; 11153c9edd9cSThomas Zimmermann 111605b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 111705b84911SRob Clark uint32_t size, uint32_t flags, 11183cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1119c8afe684SRob Clark { 1120d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1121c8afe684SRob Clark struct msm_gem_object *msm_obj; 1122c8afe684SRob Clark 1123c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1124c8afe684SRob Clark case MSM_BO_CACHED: 1125c8afe684SRob Clark case MSM_BO_WC: 1126c8afe684SRob Clark break; 1127d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1128d12e3390SJonathan Marek if (priv->has_cached_coherent) 1129d12e3390SJonathan Marek break; 1130e181ad43SGustavo A. R. Silva fallthrough; 1131c8afe684SRob Clark default: 11322d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1133c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 113405b84911SRob Clark return -EINVAL; 1135c8afe684SRob Clark } 1136c8afe684SRob Clark 1137667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 113805b84911SRob Clark if (!msm_obj) 113905b84911SRob Clark return -ENOMEM; 1140c8afe684SRob Clark 1141c8afe684SRob Clark msm_obj->flags = flags; 11424cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1143c8afe684SRob Clark 1144027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11454b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11464b85f7f5SRob Clark 114705b84911SRob Clark *obj = &msm_obj->base; 11483c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 114905b84911SRob Clark 115005b84911SRob Clark return 0; 115105b84911SRob Clark } 115205b84911SRob Clark 1153030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 115405b84911SRob Clark { 1155f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11563cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1157871d812aSRob Clark struct drm_gem_object *obj = NULL; 1158f4839bd5SRob Clark bool use_vram = false; 115905b84911SRob Clark int ret; 116005b84911SRob Clark 116105b84911SRob Clark size = PAGE_ALIGN(size); 116205b84911SRob Clark 1163c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1164f4839bd5SRob Clark use_vram = true; 116586f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1166f4839bd5SRob Clark use_vram = true; 1167f4839bd5SRob Clark 116890643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1169f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1170f4839bd5SRob Clark 11711a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11721a5dff5dSJordan Crouse * infrastructure grumpy 11731a5dff5dSJordan Crouse */ 11741a5dff5dSJordan Crouse if (size == 0) 11751a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11761a5dff5dSJordan Crouse 11773cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 117805b84911SRob Clark if (ret) 11792203bd0eSDan Carpenter return ERR_PTR(ret); 118005b84911SRob Clark 11813cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11823cbdc8d8SAkhil P Oommen 1183f4839bd5SRob Clark if (use_vram) { 11844b85f7f5SRob Clark struct msm_gem_vma *vma; 1185f4839bd5SRob Clark struct page **pages; 1186b3949a9aSHans Verkuil 1187a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1188a694ffedSIskren Chernev 1189a6ae74c9SRob Clark msm_gem_lock(obj); 1190f4839bd5SRob Clark 11914b85f7f5SRob Clark vma = add_vma(obj, NULL); 1192a6ae74c9SRob Clark msm_gem_unlock(obj); 11934b85f7f5SRob Clark if (IS_ERR(vma)) { 11944b85f7f5SRob Clark ret = PTR_ERR(vma); 11954b85f7f5SRob Clark goto fail; 11964b85f7f5SRob Clark } 11974b85f7f5SRob Clark 11984b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11994b85f7f5SRob Clark 120007fcad0dSIskren Chernev msm_gem_lock(obj); 1201f4839bd5SRob Clark pages = get_pages(obj); 120207fcad0dSIskren Chernev msm_gem_unlock(obj); 1203f4839bd5SRob Clark if (IS_ERR(pages)) { 1204f4839bd5SRob Clark ret = PTR_ERR(pages); 1205f4839bd5SRob Clark goto fail; 1206f4839bd5SRob Clark } 12074b85f7f5SRob Clark 12084b85f7f5SRob Clark vma->iova = physaddr(obj); 1209f4839bd5SRob Clark } else { 121005b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 121105b84911SRob Clark if (ret) 121205b84911SRob Clark goto fail; 12130abdba47SLucas Stach /* 12140abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12150abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12160abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12170abdba47SLucas Stach * expected if you're going to pin these pages. 12180abdba47SLucas Stach */ 12190abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1220871d812aSRob Clark } 122105b84911SRob Clark 1222b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.unbacked, obj); 12233cbdc8d8SAkhil P Oommen 12246ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12256ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12266ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12276ed0897cSRob Clark 122805b84911SRob Clark return obj; 122905b84911SRob Clark 123005b84911SRob Clark fail: 1231f7d33950SEmil Velikov drm_gem_object_put(obj); 123205b84911SRob Clark return ERR_PTR(ret); 123305b84911SRob Clark } 123405b84911SRob Clark 123505b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 123679f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 123705b84911SRob Clark { 12383cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 123905b84911SRob Clark struct msm_gem_object *msm_obj; 124005b84911SRob Clark struct drm_gem_object *obj; 124179f0e202SRob Clark uint32_t size; 124205b84911SRob Clark int ret, npages; 124305b84911SRob Clark 1244871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1245c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12466a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1247871d812aSRob Clark return ERR_PTR(-EINVAL); 1248871d812aSRob Clark } 1249871d812aSRob Clark 125079f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 125105b84911SRob Clark 12523cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 125305b84911SRob Clark if (ret) 12542203bd0eSDan Carpenter return ERR_PTR(ret); 125505b84911SRob Clark 125605b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 125705b84911SRob Clark 125805b84911SRob Clark npages = size / PAGE_SIZE; 125905b84911SRob Clark 126005b84911SRob Clark msm_obj = to_msm_bo(obj); 1261a6ae74c9SRob Clark msm_gem_lock(obj); 126205b84911SRob Clark msm_obj->sgt = sgt; 12632098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 126405b84911SRob Clark if (!msm_obj->pages) { 1265a6ae74c9SRob Clark msm_gem_unlock(obj); 126605b84911SRob Clark ret = -ENOMEM; 126705b84911SRob Clark goto fail; 126805b84911SRob Clark } 126905b84911SRob Clark 1270c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12710e08270aSSushmita Susheelendra if (ret) { 1272a6ae74c9SRob Clark msm_gem_unlock(obj); 127305b84911SRob Clark goto fail; 12740e08270aSSushmita Susheelendra } 127505b84911SRob Clark 1276a6ae74c9SRob Clark msm_gem_unlock(obj); 12773cbdc8d8SAkhil P Oommen 1278b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.pinned, obj); 12793cbdc8d8SAkhil P Oommen 12806ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12816ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12826ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12836ed0897cSRob Clark 1284c8afe684SRob Clark return obj; 1285c8afe684SRob Clark 1286c8afe684SRob Clark fail: 1287f7d33950SEmil Velikov drm_gem_object_put(obj); 1288c8afe684SRob Clark return ERR_PTR(ret); 1289c8afe684SRob Clark } 12908223286dSJordan Crouse 1291030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12928223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1293030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12948223286dSJordan Crouse { 12958223286dSJordan Crouse void *vaddr; 1296030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12978223286dSJordan Crouse int ret; 12988223286dSJordan Crouse 12998223286dSJordan Crouse if (IS_ERR(obj)) 13008223286dSJordan Crouse return ERR_CAST(obj); 13018223286dSJordan Crouse 13028223286dSJordan Crouse if (iova) { 13039fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 130493f7abf1SJordan Crouse if (ret) 130593f7abf1SJordan Crouse goto err; 13068223286dSJordan Crouse } 13078223286dSJordan Crouse 13088223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1309c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13107ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 131193f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 131293f7abf1SJordan Crouse goto err; 13138223286dSJordan Crouse } 13148223286dSJordan Crouse 13158223286dSJordan Crouse if (bo) 13168223286dSJordan Crouse *bo = obj; 13178223286dSJordan Crouse 13188223286dSJordan Crouse return vaddr; 131993f7abf1SJordan Crouse err: 1320f7d33950SEmil Velikov drm_gem_object_put(obj); 132193f7abf1SJordan Crouse 132293f7abf1SJordan Crouse return ERR_PTR(ret); 132393f7abf1SJordan Crouse 13248223286dSJordan Crouse } 13258223286dSJordan Crouse 13261e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1327030af2b0SRob Clark struct msm_gem_address_space *aspace) 13281e29dff0SJordan Crouse { 13291e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13301e29dff0SJordan Crouse return; 13311e29dff0SJordan Crouse 13321e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13337ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1334f7d33950SEmil Velikov drm_gem_object_put(bo); 13351e29dff0SJordan Crouse } 13360815d774SJordan Crouse 13370815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13380815d774SJordan Crouse { 13390815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13400815d774SJordan Crouse va_list ap; 13410815d774SJordan Crouse 13420815d774SJordan Crouse if (!fmt) 13430815d774SJordan Crouse return; 13440815d774SJordan Crouse 13450815d774SJordan Crouse va_start(ap, fmt); 13460815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13470815d774SJordan Crouse va_end(ap); 13480815d774SJordan Crouse } 1349