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 222*16eb51abSRob Clark static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj, 223*16eb51abSRob Clark unsigned madv) 22405b84911SRob Clark { 2256c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 2260e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 22705b84911SRob Clark struct page **p; 2280e08270aSSushmita Susheelendra 229d4d7d363SRob Clark msm_gem_assert_locked(obj); 2300e08270aSSushmita Susheelendra 231*16eb51abSRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 232*16eb51abSRob Clark DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 233*16eb51abSRob Clark msm_obj->madv, madv); 2340e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 2350e08270aSSushmita Susheelendra } 2360e08270aSSushmita Susheelendra 23705b84911SRob Clark p = get_pages(obj); 2386c7c8fb8SRob Clark if (IS_ERR(p)) 2396c7c8fb8SRob Clark return p; 2406c7c8fb8SRob Clark 2416c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 2426c7c8fb8SRob Clark msm_obj->pin_count++; 2436c7c8fb8SRob Clark update_lru_locked(obj); 2446c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 24510f76165SRob Clark 24605b84911SRob Clark return p; 24705b84911SRob Clark } 24805b84911SRob Clark 249e7cd5ee9SRob Clark struct page **msm_gem_pin_pages(struct drm_gem_object *obj) 250e7cd5ee9SRob Clark { 251e7cd5ee9SRob Clark struct page **p; 252e7cd5ee9SRob Clark 253e7cd5ee9SRob Clark msm_gem_lock(obj); 254*16eb51abSRob Clark p = msm_gem_pin_pages_locked(obj, MSM_MADV_WILLNEED); 255e7cd5ee9SRob Clark msm_gem_unlock(obj); 256e7cd5ee9SRob Clark 257e7cd5ee9SRob Clark return p; 258e7cd5ee9SRob Clark } 259e7cd5ee9SRob Clark 260e7cd5ee9SRob Clark void msm_gem_unpin_pages(struct drm_gem_object *obj) 26105b84911SRob Clark { 26210f76165SRob Clark msm_gem_lock(obj); 2639fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 26410f76165SRob Clark msm_gem_unlock(obj); 26505b84911SRob Clark } 26605b84911SRob Clark 267af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 268af9b3547SJonathan Marek { 2698b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 270af9b3547SJonathan Marek return pgprot_writecombine(prot); 271af9b3547SJonathan Marek return prot; 272af9b3547SJonathan Marek } 273af9b3547SJonathan Marek 2743c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 275c8afe684SRob Clark { 27611bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 277c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2780e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 279c8afe684SRob Clark struct page **pages; 280c8afe684SRob Clark unsigned long pfn; 281c8afe684SRob Clark pgoff_t pgoff; 282a5f74ec7SSouptick Joarder int err; 283a5f74ec7SSouptick Joarder vm_fault_t ret; 284c8afe684SRob Clark 2850e08270aSSushmita Susheelendra /* 2860e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2870e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 288d78d383aSRob Clark */ 289a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 290a5f74ec7SSouptick Joarder if (err) { 291a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 292c8afe684SRob Clark goto out; 293a5f74ec7SSouptick Joarder } 294c8afe684SRob Clark 29590643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 296a6ae74c9SRob Clark msm_gem_unlock(obj); 2970e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2980e08270aSSushmita Susheelendra } 2990e08270aSSushmita Susheelendra 300c8afe684SRob Clark /* make sure we have pages attached now */ 301c8afe684SRob Clark pages = get_pages(obj); 302c8afe684SRob Clark if (IS_ERR(pages)) { 303a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 304c8afe684SRob Clark goto out_unlock; 305c8afe684SRob Clark } 306c8afe684SRob Clark 307c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 3081a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 309c8afe684SRob Clark 310871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 311c8afe684SRob Clark 3121a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 313c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 314c8afe684SRob Clark 3158246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 3168246913aSRob Clark 317c8afe684SRob Clark out_unlock: 318a6ae74c9SRob Clark msm_gem_unlock(obj); 319c8afe684SRob Clark out: 320a5f74ec7SSouptick Joarder return ret; 321c8afe684SRob Clark } 322c8afe684SRob Clark 323c8afe684SRob Clark /** get mmap offset */ 324c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 325c8afe684SRob Clark { 326c8afe684SRob Clark struct drm_device *dev = obj->dev; 327c8afe684SRob Clark int ret; 328c8afe684SRob Clark 329d4d7d363SRob Clark msm_gem_assert_locked(obj); 330c8afe684SRob Clark 331c8afe684SRob Clark /* Make it mmapable */ 332c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 333c8afe684SRob Clark 334c8afe684SRob Clark if (ret) { 3356a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 336c8afe684SRob Clark return 0; 337c8afe684SRob Clark } 338c8afe684SRob Clark 339c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 340c8afe684SRob Clark } 341c8afe684SRob Clark 342c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 343c8afe684SRob Clark { 344c8afe684SRob Clark uint64_t offset; 3450e08270aSSushmita Susheelendra 346a6ae74c9SRob Clark msm_gem_lock(obj); 347c8afe684SRob Clark offset = mmap_offset(obj); 348a6ae74c9SRob Clark msm_gem_unlock(obj); 349c8afe684SRob Clark return offset; 350c8afe684SRob Clark } 351c8afe684SRob Clark 3524b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3534b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3544b85f7f5SRob Clark { 3554b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3564b85f7f5SRob Clark struct msm_gem_vma *vma; 3574b85f7f5SRob Clark 358d4d7d363SRob Clark msm_gem_assert_locked(obj); 3590e08270aSSushmita Susheelendra 360fc2f0756SRob Clark vma = msm_gem_vma_new(aspace); 3614b85f7f5SRob Clark if (!vma) 3624b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3634b85f7f5SRob Clark 3644b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3654b85f7f5SRob Clark 3664b85f7f5SRob Clark return vma; 3674b85f7f5SRob Clark } 3684b85f7f5SRob Clark 3694b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3704b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3714b85f7f5SRob Clark { 3724b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3734b85f7f5SRob Clark struct msm_gem_vma *vma; 3744b85f7f5SRob Clark 375d4d7d363SRob Clark msm_gem_assert_locked(obj); 3764b85f7f5SRob Clark 3774b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3784b85f7f5SRob Clark if (vma->aspace == aspace) 3794b85f7f5SRob Clark return vma; 3804b85f7f5SRob Clark } 3814b85f7f5SRob Clark 3824b85f7f5SRob Clark return NULL; 3834b85f7f5SRob Clark } 3844b85f7f5SRob Clark 3854b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3864b85f7f5SRob Clark { 3874b85f7f5SRob Clark if (!vma) 3884b85f7f5SRob Clark return; 3894b85f7f5SRob Clark 3904b85f7f5SRob Clark list_del(&vma->list); 3914b85f7f5SRob Clark kfree(vma); 3924b85f7f5SRob Clark } 3934b85f7f5SRob Clark 39437c68900SLee Jones /* 39520d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 39620d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 39720d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 39820d0ae2fSRob Clark * mapping. 39920d0ae2fSRob Clark */ 4004fe5f65eSRob Clark static void 40120d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 4024fe5f65eSRob Clark { 4034fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4049b73bde3SIskren Chernev struct msm_gem_vma *vma; 4054fe5f65eSRob Clark 406d4d7d363SRob Clark msm_gem_assert_locked(obj); 4074fe5f65eSRob Clark 4089b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 409d67f1b6dSBrian Masney if (vma->aspace) { 410fc2f0756SRob Clark msm_gem_vma_purge(vma); 41120d0ae2fSRob Clark if (close) 412fc2f0756SRob Clark msm_gem_vma_close(vma); 413d67f1b6dSBrian Masney } 4149b73bde3SIskren Chernev } 4159b73bde3SIskren Chernev } 4169b73bde3SIskren Chernev 4179b73bde3SIskren Chernev /* Called with msm_obj locked */ 4189b73bde3SIskren Chernev static void 4199b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 4204fe5f65eSRob Clark { 4214fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4224fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 4234fe5f65eSRob Clark 424d4d7d363SRob Clark msm_gem_assert_locked(obj); 4254fe5f65eSRob Clark 4264b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 4274b85f7f5SRob Clark del_vma(vma); 4284fe5f65eSRob Clark } 4294fe5f65eSRob Clark } 4304fe5f65eSRob Clark 431522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 432522f1abfSRob Clark struct msm_gem_address_space *aspace, 433d3b8877eSJonathan Marek u64 range_start, u64 range_end) 434c8afe684SRob Clark { 4354b85f7f5SRob Clark struct msm_gem_vma *vma; 436c8afe684SRob Clark 437d4d7d363SRob Clark msm_gem_assert_locked(obj); 438cb1e3818SRob Clark 4394b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 440871d812aSRob Clark 4414b85f7f5SRob Clark if (!vma) { 442522f1abfSRob Clark int ret; 443522f1abfSRob Clark 4444b85f7f5SRob Clark vma = add_vma(obj, aspace); 445c0ee9794SJordan Crouse if (IS_ERR(vma)) 446522f1abfSRob Clark return vma; 4474b85f7f5SRob Clark 448fc2f0756SRob Clark ret = msm_gem_vma_init(vma, obj->size, 449d3b8877eSJonathan Marek range_start, range_end); 450c0ee9794SJordan Crouse if (ret) { 451c0ee9794SJordan Crouse del_vma(vma); 452522f1abfSRob Clark return ERR_PTR(ret); 453c8afe684SRob Clark } 454522f1abfSRob Clark } else { 455522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 456522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4574b85f7f5SRob Clark } 4584b85f7f5SRob Clark 459522f1abfSRob Clark return vma; 460c0ee9794SJordan Crouse } 4614b85f7f5SRob Clark 46227674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 463c0ee9794SJordan Crouse { 464c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 465c0ee9794SJordan Crouse struct page **pages; 46664fcbde7SRob Clark int ret, prot = IOMMU_READ; 467bbc2cd07SRob Clark 468bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 469bbc2cd07SRob Clark prot |= IOMMU_WRITE; 470c0ee9794SJordan Crouse 4710b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4720b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4730b462d7aSJonathan Marek 474d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 475d12e3390SJonathan Marek prot |= IOMMU_CACHE; 476d12e3390SJonathan Marek 477d4d7d363SRob Clark msm_gem_assert_locked(obj); 478c0ee9794SJordan Crouse 479*16eb51abSRob Clark pages = msm_gem_pin_pages_locked(obj, MSM_MADV_WILLNEED); 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 702*16eb51abSRob Clark pages = msm_gem_pin_pages_locked(obj, madv); 703d6ae7d1cSRob Clark if (IS_ERR(pages)) 704d6ae7d1cSRob Clark return ERR_CAST(pages); 705d6ae7d1cSRob Clark 7060e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 707a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 7080e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 7090e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 710a6ae74c9SRob Clark * hold msm_obj lock) 7110e08270aSSushmita Susheelendra */ 7120e08270aSSushmita Susheelendra msm_obj->vmap_count++; 7130e08270aSSushmita Susheelendra 7140e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 7150e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 716af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 7170e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 7180e08270aSSushmita Susheelendra ret = -ENOMEM; 7190e08270aSSushmita Susheelendra goto fail; 7200e08270aSSushmita Susheelendra } 7210e08270aSSushmita Susheelendra } 7220e08270aSSushmita Susheelendra 7230e08270aSSushmita Susheelendra return msm_obj->vaddr; 7240e08270aSSushmita Susheelendra 7250e08270aSSushmita Susheelendra fail: 726e1e9db2cSRob Clark msm_obj->vmap_count--; 727d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7280e08270aSSushmita Susheelendra return ERR_PTR(ret); 72918f23049SRob Clark } 73018f23049SRob Clark 731e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 732e4b87d22SRob Clark { 733e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 734e4b87d22SRob Clark } 735e4b87d22SRob Clark 736fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 737fad33f4bSRob Clark { 738e4b87d22SRob Clark void *ret; 739e4b87d22SRob Clark 740e4b87d22SRob Clark msm_gem_lock(obj); 741e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 742e4b87d22SRob Clark msm_gem_unlock(obj); 743e4b87d22SRob Clark 744e4b87d22SRob Clark return ret; 745fad33f4bSRob Clark } 746fad33f4bSRob Clark 747fad33f4bSRob Clark /* 748fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 749fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 750fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 751fad33f4bSRob Clark * active list. 752fad33f4bSRob Clark */ 753fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 754fad33f4bSRob Clark { 755fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 756fad33f4bSRob Clark } 757fad33f4bSRob Clark 758e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 75918f23049SRob Clark { 7600e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7610e08270aSSushmita Susheelendra 762d4d7d363SRob Clark msm_gem_assert_locked(obj); 76390643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 764e4b87d22SRob Clark 7650e08270aSSushmita Susheelendra msm_obj->vmap_count--; 766d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7674cd33c48SRob Clark } 7680e08270aSSushmita Susheelendra 7690e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7704cd33c48SRob Clark { 771a6ae74c9SRob Clark msm_gem_lock(obj); 772e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 773a6ae74c9SRob Clark msm_gem_unlock(obj); 7744cd33c48SRob Clark } 7754cd33c48SRob Clark 7764cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7774cd33c48SRob Clark * false or -errno. 7784cd33c48SRob Clark */ 7794cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7804cd33c48SRob Clark { 7816c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 7824cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7834cd33c48SRob Clark 784a6ae74c9SRob Clark msm_gem_lock(obj); 7854cd33c48SRob Clark 7866c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 7876c7c8fb8SRob Clark 7884cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 7894cd33c48SRob Clark msm_obj->madv = madv; 7904cd33c48SRob Clark 7910e08270aSSushmita Susheelendra madv = msm_obj->madv; 7920e08270aSSushmita Susheelendra 7933edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7943edfa30fSRob Clark * between inactive lists 7953edfa30fSRob Clark */ 7966c7c8fb8SRob Clark update_lru_locked(obj); 7976c7c8fb8SRob Clark 7986c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 7993edfa30fSRob Clark 800a6ae74c9SRob Clark msm_gem_unlock(obj); 8010e08270aSSushmita Susheelendra 8020e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 8034cd33c48SRob Clark } 8044cd33c48SRob Clark 805599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 80668209390SRob Clark { 80768209390SRob Clark struct drm_device *dev = obj->dev; 8086c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 80968209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 81068209390SRob Clark 811d4d7d363SRob Clark msm_gem_assert_locked(obj); 81290643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 81368209390SRob Clark 81420d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 81520d0ae2fSRob Clark put_iova_spaces(obj, true); 8160e08270aSSushmita Susheelendra 817599089c6SRob Clark msm_gem_vunmap(obj); 81868209390SRob Clark 81981d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 82081d4d597SRob Clark 82168209390SRob Clark put_pages(obj); 82268209390SRob Clark 8239b73bde3SIskren Chernev put_iova_vmas(obj); 8249b73bde3SIskren Chernev 8256c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 8266c7c8fb8SRob Clark /* A one-way transition: */ 82768209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 8286c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 82968209390SRob Clark 83068209390SRob Clark drm_gem_free_mmap_offset(obj); 83168209390SRob Clark 83268209390SRob Clark /* Our goal here is to return as much of the memory as 83368209390SRob Clark * is possible back to the system as we are called from OOM. 83468209390SRob Clark * To do this we must instruct the shmfs to drop all of its 83568209390SRob Clark * backing pages, *now*. 83668209390SRob Clark */ 83768209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 83868209390SRob Clark 83968209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 84068209390SRob Clark 0, (loff_t)-1); 84168209390SRob Clark } 84268209390SRob Clark 84337c68900SLee Jones /* 84463f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 84563f17ef8SRob Clark */ 84663f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 84763f17ef8SRob Clark { 84863f17ef8SRob Clark struct drm_device *dev = obj->dev; 84963f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 85063f17ef8SRob Clark 851d4d7d363SRob Clark msm_gem_assert_locked(obj); 85263f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 85363f17ef8SRob Clark 85463f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 85563f17ef8SRob Clark put_iova_spaces(obj, false); 85663f17ef8SRob Clark 85763f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 85863f17ef8SRob Clark 85963f17ef8SRob Clark put_pages(obj); 86063f17ef8SRob Clark } 86163f17ef8SRob Clark 862599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 863e1e9db2cSRob Clark { 864e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 865e1e9db2cSRob Clark 866d4d7d363SRob Clark msm_gem_assert_locked(obj); 8670e08270aSSushmita Susheelendra 86890643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 869e1e9db2cSRob Clark return; 870e1e9db2cSRob Clark 871e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 872e1e9db2cSRob Clark msm_obj->vaddr = NULL; 873e1e9db2cSRob Clark } 874e1e9db2cSRob Clark 87501780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 87601780d02SRob Clark { 877d4d7d363SRob Clark msm_gem_assert_locked(obj); 87801780d02SRob Clark 87901780d02SRob Clark if (to_msm_bo(obj)->pin_count) 88001780d02SRob Clark return true; 88101780d02SRob Clark 88201780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 88301780d02SRob Clark } 88401780d02SRob Clark 885ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 886ba00c3f2SRob Clark { 887b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 888f755e227SChris Wilson unsigned long remain = 889f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 890f755e227SChris Wilson long ret; 891b6295f9aSRob Clark 892b5a24e13SRob Clark if (op & MSM_PREP_BOOST) { 893b5a24e13SRob Clark dma_resv_set_deadline(obj->resv, dma_resv_usage_rw(write), 894b5a24e13SRob Clark ktime_get()); 895b5a24e13SRob Clark } 896b5a24e13SRob Clark 8977bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 8987bc80a54SChristian König true, remain); 899f755e227SChris Wilson if (ret == 0) 900f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 901f755e227SChris Wilson else if (ret < 0) 902f755e227SChris Wilson return ret; 903ba00c3f2SRob Clark 9047198e6b0SRob Clark /* TODO cache maintenance */ 9057198e6b0SRob Clark 906b6295f9aSRob Clark return 0; 9077198e6b0SRob Clark } 9087198e6b0SRob Clark 9097198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 9107198e6b0SRob Clark { 9117198e6b0SRob Clark /* TODO cache maintenance */ 912c8afe684SRob Clark return 0; 913c8afe684SRob Clark } 914c8afe684SRob Clark 915c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 916528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 917528107c8SRob Clark struct msm_gem_stats *stats) 918c8afe684SRob Clark { 919c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 92052791eeeSChristian König struct dma_resv *robj = obj->resv; 9214b85f7f5SRob Clark struct msm_gem_vma *vma; 922c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9234cd33c48SRob Clark const char *madv; 924c8afe684SRob Clark 925a6ae74c9SRob Clark msm_gem_lock(obj); 926b6295f9aSRob Clark 927528107c8SRob Clark stats->all.count++; 928528107c8SRob Clark stats->all.size += obj->size; 929528107c8SRob Clark 930da53d8b5SRob Clark if (msm_gem_active(obj)) { 931528107c8SRob Clark stats->active.count++; 932528107c8SRob Clark stats->active.size += obj->size; 933528107c8SRob Clark } 934528107c8SRob Clark 935f48f3563SRob Clark if (msm_obj->pages) { 936f48f3563SRob Clark stats->resident.count++; 937f48f3563SRob Clark stats->resident.size += obj->size; 938f48f3563SRob Clark } 939f48f3563SRob Clark 9404cd33c48SRob Clark switch (msm_obj->madv) { 9414cd33c48SRob Clark case __MSM_MADV_PURGED: 942528107c8SRob Clark stats->purged.count++; 943528107c8SRob Clark stats->purged.size += obj->size; 9444cd33c48SRob Clark madv = " purged"; 9454cd33c48SRob Clark break; 9464cd33c48SRob Clark case MSM_MADV_DONTNEED: 9470054eeb7SRob Clark stats->purgeable.count++; 9480054eeb7SRob Clark stats->purgeable.size += obj->size; 9494cd33c48SRob Clark madv = " purgeable"; 9504cd33c48SRob Clark break; 9514cd33c48SRob Clark case MSM_MADV_WILLNEED: 9524cd33c48SRob Clark default: 9534cd33c48SRob Clark madv = ""; 9544cd33c48SRob Clark break; 9554cd33c48SRob Clark } 9564cd33c48SRob Clark 957575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 958da53d8b5SRob Clark msm_obj->flags, msm_gem_active(obj) ? 'A' : 'I', 9592c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 960667ce33eSRob Clark off, msm_obj->vaddr); 961667ce33eSRob Clark 9620815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 963667ce33eSRob Clark 964575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 965575f0485SJordan Crouse 966575f0485SJordan Crouse seq_puts(m, " vmas:"); 967575f0485SJordan Crouse 96825faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 96925faf2f2SRob Clark const char *name, *comm; 97025faf2f2SRob Clark if (vma->aspace) { 97125faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 97225faf2f2SRob Clark struct task_struct *task = 97325faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 97425faf2f2SRob Clark if (task) { 97525faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 976ac3e4f42SRob Clark put_task_struct(task); 97725faf2f2SRob Clark } else { 97825faf2f2SRob Clark comm = NULL; 97925faf2f2SRob Clark } 98025faf2f2SRob Clark name = aspace->name; 98125faf2f2SRob Clark } else { 98225faf2f2SRob Clark name = comm = NULL; 98325faf2f2SRob Clark } 98425faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 98525faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 98625faf2f2SRob Clark vma->aspace, vma->iova, 98725faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 988ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 98925faf2f2SRob Clark kfree(comm); 99025faf2f2SRob Clark } 991575f0485SJordan Crouse 992575f0485SJordan Crouse seq_puts(m, "\n"); 993575f0485SJordan Crouse } 994b6295f9aSRob Clark 995f19ee2f3SChristian König dma_resv_describe(robj, m); 996a6ae74c9SRob Clark msm_gem_unlock(obj); 997c8afe684SRob Clark } 998c8afe684SRob Clark 999c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 1000c8afe684SRob Clark { 1001528107c8SRob Clark struct msm_gem_stats stats = {}; 1002c8afe684SRob Clark struct msm_gem_object *msm_obj; 1003c8afe684SRob Clark 10040815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 10056ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 1006c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 1007575f0485SJordan Crouse seq_puts(m, " "); 1008528107c8SRob Clark msm_gem_describe(obj, m, &stats); 1009c8afe684SRob Clark } 1010c8afe684SRob Clark 1011528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 1012528107c8SRob Clark stats.all.count, stats.all.size); 1013528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 1014528107c8SRob Clark stats.active.count, stats.active.size); 1015f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1016f48f3563SRob Clark stats.resident.count, stats.resident.size); 1017f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10180054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1019528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1020528107c8SRob Clark stats.purged.count, stats.purged.size); 1021c8afe684SRob Clark } 1022c8afe684SRob Clark #endif 1023c8afe684SRob Clark 1024030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 10256867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 1026c8afe684SRob Clark { 1027c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 102848e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 102948e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 103048e7f183SKristian H. Kristensen 10316ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10326ed0897cSRob Clark list_del(&msm_obj->node); 10336ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10346ed0897cSRob Clark 103520d0ae2fSRob Clark put_iova_spaces(obj, true); 1036c8afe684SRob Clark 103705b84911SRob Clark if (obj->import_attach) { 103890643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 103905b84911SRob Clark 104005b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 104105b84911SRob Clark * ours, just free the array we allocated: 104205b84911SRob Clark */ 10432098105eSMichal Hocko kvfree(msm_obj->pages); 104405b84911SRob Clark 104557f04815SRob Clark put_iova_vmas(obj); 104657f04815SRob Clark 1047f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 104805b84911SRob Clark } else { 1049599089c6SRob Clark msm_gem_vunmap(obj); 1050c8afe684SRob Clark put_pages(obj); 105157f04815SRob Clark put_iova_vmas(obj); 105205b84911SRob Clark } 1053c8afe684SRob Clark 1054c8afe684SRob Clark drm_gem_object_release(obj); 1055c8afe684SRob Clark 1056c8afe684SRob Clark kfree(msm_obj); 1057c8afe684SRob Clark } 1058c8afe684SRob Clark 1059510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1060510410bfSThomas Zimmermann { 1061510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1062510410bfSThomas Zimmermann 10631c71222eSSuren Baghdasaryan vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP); 1064510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1065510410bfSThomas Zimmermann 1066510410bfSThomas Zimmermann return 0; 1067510410bfSThomas Zimmermann } 1068510410bfSThomas Zimmermann 1069c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1070c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10710815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10720815d774SJordan Crouse char *name) 1073c8afe684SRob Clark { 1074c8afe684SRob Clark struct drm_gem_object *obj; 1075c8afe684SRob Clark int ret; 1076c8afe684SRob Clark 1077c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1078c8afe684SRob Clark 1079c8afe684SRob Clark if (IS_ERR(obj)) 1080c8afe684SRob Clark return PTR_ERR(obj); 1081c8afe684SRob Clark 10820815d774SJordan Crouse if (name) 10830815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10840815d774SJordan Crouse 1085c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1086c8afe684SRob Clark 1087c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1088f7d33950SEmil Velikov drm_gem_object_put(obj); 1089c8afe684SRob Clark 1090c8afe684SRob Clark return ret; 1091c8afe684SRob Clark } 1092c8afe684SRob Clark 10933c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10943c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10953c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10963c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10973c9edd9cSThomas Zimmermann }; 10983c9edd9cSThomas Zimmermann 10993c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 11003c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11013c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11023c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11033c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11043c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11053c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1106510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 11073c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11083c9edd9cSThomas Zimmermann }; 11093c9edd9cSThomas Zimmermann 111005b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 111105b84911SRob Clark uint32_t size, uint32_t flags, 11123cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1113c8afe684SRob Clark { 1114d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1115c8afe684SRob Clark struct msm_gem_object *msm_obj; 1116c8afe684SRob Clark 1117c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1118c8afe684SRob Clark case MSM_BO_CACHED: 1119c8afe684SRob Clark case MSM_BO_WC: 1120c8afe684SRob Clark break; 1121d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1122d12e3390SJonathan Marek if (priv->has_cached_coherent) 1123d12e3390SJonathan Marek break; 1124e181ad43SGustavo A. R. Silva fallthrough; 1125c8afe684SRob Clark default: 11262d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1127c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 112805b84911SRob Clark return -EINVAL; 1129c8afe684SRob Clark } 1130c8afe684SRob Clark 1131667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 113205b84911SRob Clark if (!msm_obj) 113305b84911SRob Clark return -ENOMEM; 1134c8afe684SRob Clark 1135c8afe684SRob Clark msm_obj->flags = flags; 11364cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1137c8afe684SRob Clark 1138027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11394b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11404b85f7f5SRob Clark 114105b84911SRob Clark *obj = &msm_obj->base; 11423c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 114305b84911SRob Clark 114405b84911SRob Clark return 0; 114505b84911SRob Clark } 114605b84911SRob Clark 1147030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 114805b84911SRob Clark { 1149f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11503cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1151871d812aSRob Clark struct drm_gem_object *obj = NULL; 1152f4839bd5SRob Clark bool use_vram = false; 115305b84911SRob Clark int ret; 115405b84911SRob Clark 115505b84911SRob Clark size = PAGE_ALIGN(size); 115605b84911SRob Clark 1157c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1158f4839bd5SRob Clark use_vram = true; 115986f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1160f4839bd5SRob Clark use_vram = true; 1161f4839bd5SRob Clark 116290643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1163f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1164f4839bd5SRob Clark 11651a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11661a5dff5dSJordan Crouse * infrastructure grumpy 11671a5dff5dSJordan Crouse */ 11681a5dff5dSJordan Crouse if (size == 0) 11691a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11701a5dff5dSJordan Crouse 11713cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 117205b84911SRob Clark if (ret) 11732203bd0eSDan Carpenter return ERR_PTR(ret); 117405b84911SRob Clark 11753cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11763cbdc8d8SAkhil P Oommen 1177f4839bd5SRob Clark if (use_vram) { 11784b85f7f5SRob Clark struct msm_gem_vma *vma; 1179f4839bd5SRob Clark struct page **pages; 1180b3949a9aSHans Verkuil 1181a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1182a694ffedSIskren Chernev 1183a6ae74c9SRob Clark msm_gem_lock(obj); 1184f4839bd5SRob Clark 11854b85f7f5SRob Clark vma = add_vma(obj, NULL); 1186a6ae74c9SRob Clark msm_gem_unlock(obj); 11874b85f7f5SRob Clark if (IS_ERR(vma)) { 11884b85f7f5SRob Clark ret = PTR_ERR(vma); 11894b85f7f5SRob Clark goto fail; 11904b85f7f5SRob Clark } 11914b85f7f5SRob Clark 11924b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11934b85f7f5SRob Clark 119407fcad0dSIskren Chernev msm_gem_lock(obj); 1195f4839bd5SRob Clark pages = get_pages(obj); 119607fcad0dSIskren Chernev msm_gem_unlock(obj); 1197f4839bd5SRob Clark if (IS_ERR(pages)) { 1198f4839bd5SRob Clark ret = PTR_ERR(pages); 1199f4839bd5SRob Clark goto fail; 1200f4839bd5SRob Clark } 12014b85f7f5SRob Clark 12024b85f7f5SRob Clark vma->iova = physaddr(obj); 1203f4839bd5SRob Clark } else { 120405b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 120505b84911SRob Clark if (ret) 120605b84911SRob Clark goto fail; 12070abdba47SLucas Stach /* 12080abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12090abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12100abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12110abdba47SLucas Stach * expected if you're going to pin these pages. 12120abdba47SLucas Stach */ 12130abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1214871d812aSRob Clark } 121505b84911SRob Clark 1216b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.unbacked, obj); 12173cbdc8d8SAkhil P Oommen 12186ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12196ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12206ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12216ed0897cSRob Clark 122205b84911SRob Clark return obj; 122305b84911SRob Clark 122405b84911SRob Clark fail: 1225f7d33950SEmil Velikov drm_gem_object_put(obj); 122605b84911SRob Clark return ERR_PTR(ret); 122705b84911SRob Clark } 122805b84911SRob Clark 122905b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 123079f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 123105b84911SRob Clark { 12323cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 123305b84911SRob Clark struct msm_gem_object *msm_obj; 123405b84911SRob Clark struct drm_gem_object *obj; 123579f0e202SRob Clark uint32_t size; 123605b84911SRob Clark int ret, npages; 123705b84911SRob Clark 1238871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1239c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12406a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1241871d812aSRob Clark return ERR_PTR(-EINVAL); 1242871d812aSRob Clark } 1243871d812aSRob Clark 124479f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 124505b84911SRob Clark 12463cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 124705b84911SRob Clark if (ret) 12482203bd0eSDan Carpenter return ERR_PTR(ret); 124905b84911SRob Clark 125005b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 125105b84911SRob Clark 125205b84911SRob Clark npages = size / PAGE_SIZE; 125305b84911SRob Clark 125405b84911SRob Clark msm_obj = to_msm_bo(obj); 1255a6ae74c9SRob Clark msm_gem_lock(obj); 125605b84911SRob Clark msm_obj->sgt = sgt; 12572098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 125805b84911SRob Clark if (!msm_obj->pages) { 1259a6ae74c9SRob Clark msm_gem_unlock(obj); 126005b84911SRob Clark ret = -ENOMEM; 126105b84911SRob Clark goto fail; 126205b84911SRob Clark } 126305b84911SRob Clark 1264c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12650e08270aSSushmita Susheelendra if (ret) { 1266a6ae74c9SRob Clark msm_gem_unlock(obj); 126705b84911SRob Clark goto fail; 12680e08270aSSushmita Susheelendra } 126905b84911SRob Clark 1270a6ae74c9SRob Clark msm_gem_unlock(obj); 12713cbdc8d8SAkhil P Oommen 1272b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.pinned, obj); 12733cbdc8d8SAkhil P Oommen 12746ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12756ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12766ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12776ed0897cSRob Clark 1278c8afe684SRob Clark return obj; 1279c8afe684SRob Clark 1280c8afe684SRob Clark fail: 1281f7d33950SEmil Velikov drm_gem_object_put(obj); 1282c8afe684SRob Clark return ERR_PTR(ret); 1283c8afe684SRob Clark } 12848223286dSJordan Crouse 1285030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12868223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1287030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12888223286dSJordan Crouse { 12898223286dSJordan Crouse void *vaddr; 1290030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12918223286dSJordan Crouse int ret; 12928223286dSJordan Crouse 12938223286dSJordan Crouse if (IS_ERR(obj)) 12948223286dSJordan Crouse return ERR_CAST(obj); 12958223286dSJordan Crouse 12968223286dSJordan Crouse if (iova) { 12979fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 129893f7abf1SJordan Crouse if (ret) 129993f7abf1SJordan Crouse goto err; 13008223286dSJordan Crouse } 13018223286dSJordan Crouse 13028223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1303c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13047ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 130593f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 130693f7abf1SJordan Crouse goto err; 13078223286dSJordan Crouse } 13088223286dSJordan Crouse 13098223286dSJordan Crouse if (bo) 13108223286dSJordan Crouse *bo = obj; 13118223286dSJordan Crouse 13128223286dSJordan Crouse return vaddr; 131393f7abf1SJordan Crouse err: 1314f7d33950SEmil Velikov drm_gem_object_put(obj); 131593f7abf1SJordan Crouse 131693f7abf1SJordan Crouse return ERR_PTR(ret); 131793f7abf1SJordan Crouse 13188223286dSJordan Crouse } 13198223286dSJordan Crouse 13201e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1321030af2b0SRob Clark struct msm_gem_address_space *aspace) 13221e29dff0SJordan Crouse { 13231e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13241e29dff0SJordan Crouse return; 13251e29dff0SJordan Crouse 13261e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13277ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1328f7d33950SEmil Velikov drm_gem_object_put(bo); 13291e29dff0SJordan Crouse } 13300815d774SJordan Crouse 13310815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13320815d774SJordan Crouse { 13330815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13340815d774SJordan Crouse va_list ap; 13350815d774SJordan Crouse 13360815d774SJordan Crouse if (!fmt) 13370815d774SJordan Crouse return; 13380815d774SJordan Crouse 13390815d774SJordan Crouse va_start(ap, fmt); 13400815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13410815d774SJordan Crouse va_end(ap); 13420815d774SJordan Crouse } 1343