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 22216eb51abSRob Clark static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj, 22316eb51abSRob Clark unsigned madv) 22405b84911SRob Clark { 2250e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 2260e08270aSSushmita Susheelendra 227d4d7d363SRob Clark msm_gem_assert_locked(obj); 2280e08270aSSushmita Susheelendra 22916eb51abSRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 23016eb51abSRob Clark DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 23116eb51abSRob Clark msm_obj->madv, madv); 2320e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 2330e08270aSSushmita Susheelendra } 2340e08270aSSushmita Susheelendra 235*fc896cf3SRob Clark return get_pages(obj); 236*fc896cf3SRob Clark } 237*fc896cf3SRob Clark 238*fc896cf3SRob Clark /* 239*fc896cf3SRob Clark * Update the pin count of the object, call under lru.lock 240*fc896cf3SRob Clark */ 241*fc896cf3SRob Clark void msm_gem_pin_obj_locked(struct drm_gem_object *obj) 242*fc896cf3SRob Clark { 243*fc896cf3SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 244*fc896cf3SRob Clark 245*fc896cf3SRob Clark msm_gem_assert_locked(obj); 246*fc896cf3SRob Clark 247*fc896cf3SRob Clark to_msm_bo(obj)->pin_count++; 248*fc896cf3SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.pinned, obj); 249*fc896cf3SRob Clark } 250*fc896cf3SRob Clark 251*fc896cf3SRob Clark static void pin_obj_locked(struct drm_gem_object *obj) 252*fc896cf3SRob Clark { 253*fc896cf3SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 2546c7c8fb8SRob Clark 2556c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 256*fc896cf3SRob Clark msm_gem_pin_obj_locked(obj); 2576c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 25805b84911SRob Clark } 25905b84911SRob Clark 260e7cd5ee9SRob Clark struct page **msm_gem_pin_pages(struct drm_gem_object *obj) 261e7cd5ee9SRob Clark { 262e7cd5ee9SRob Clark struct page **p; 263e7cd5ee9SRob Clark 264e7cd5ee9SRob Clark msm_gem_lock(obj); 26516eb51abSRob Clark p = msm_gem_pin_pages_locked(obj, MSM_MADV_WILLNEED); 266*fc896cf3SRob Clark if (!IS_ERR(p)) 267*fc896cf3SRob Clark pin_obj_locked(obj); 268e7cd5ee9SRob Clark msm_gem_unlock(obj); 269e7cd5ee9SRob Clark 270e7cd5ee9SRob Clark return p; 271e7cd5ee9SRob Clark } 272e7cd5ee9SRob Clark 273e7cd5ee9SRob Clark void msm_gem_unpin_pages(struct drm_gem_object *obj) 27405b84911SRob Clark { 27510f76165SRob Clark msm_gem_lock(obj); 2769fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 27710f76165SRob Clark msm_gem_unlock(obj); 27805b84911SRob Clark } 27905b84911SRob Clark 280af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 281af9b3547SJonathan Marek { 2828b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 283af9b3547SJonathan Marek return pgprot_writecombine(prot); 284af9b3547SJonathan Marek return prot; 285af9b3547SJonathan Marek } 286af9b3547SJonathan Marek 2873c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 288c8afe684SRob Clark { 28911bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 290c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2910e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 292c8afe684SRob Clark struct page **pages; 293c8afe684SRob Clark unsigned long pfn; 294c8afe684SRob Clark pgoff_t pgoff; 295a5f74ec7SSouptick Joarder int err; 296a5f74ec7SSouptick Joarder vm_fault_t ret; 297c8afe684SRob Clark 2980e08270aSSushmita Susheelendra /* 2990e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 3000e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 301d78d383aSRob Clark */ 302a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 303a5f74ec7SSouptick Joarder if (err) { 304a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 305c8afe684SRob Clark goto out; 306a5f74ec7SSouptick Joarder } 307c8afe684SRob Clark 30890643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 309a6ae74c9SRob Clark msm_gem_unlock(obj); 3100e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 3110e08270aSSushmita Susheelendra } 3120e08270aSSushmita Susheelendra 313c8afe684SRob Clark /* make sure we have pages attached now */ 314c8afe684SRob Clark pages = get_pages(obj); 315c8afe684SRob Clark if (IS_ERR(pages)) { 316a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 317c8afe684SRob Clark goto out_unlock; 318c8afe684SRob Clark } 319c8afe684SRob Clark 320c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 3211a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 322c8afe684SRob Clark 323871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 324c8afe684SRob Clark 3251a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 326c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 327c8afe684SRob Clark 3288246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 3298246913aSRob Clark 330c8afe684SRob Clark out_unlock: 331a6ae74c9SRob Clark msm_gem_unlock(obj); 332c8afe684SRob Clark out: 333a5f74ec7SSouptick Joarder return ret; 334c8afe684SRob Clark } 335c8afe684SRob Clark 336c8afe684SRob Clark /** get mmap offset */ 337c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 338c8afe684SRob Clark { 339c8afe684SRob Clark struct drm_device *dev = obj->dev; 340c8afe684SRob Clark int ret; 341c8afe684SRob Clark 342d4d7d363SRob Clark msm_gem_assert_locked(obj); 343c8afe684SRob Clark 344c8afe684SRob Clark /* Make it mmapable */ 345c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 346c8afe684SRob Clark 347c8afe684SRob Clark if (ret) { 3486a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 349c8afe684SRob Clark return 0; 350c8afe684SRob Clark } 351c8afe684SRob Clark 352c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 353c8afe684SRob Clark } 354c8afe684SRob Clark 355c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 356c8afe684SRob Clark { 357c8afe684SRob Clark uint64_t offset; 3580e08270aSSushmita Susheelendra 359a6ae74c9SRob Clark msm_gem_lock(obj); 360c8afe684SRob Clark offset = mmap_offset(obj); 361a6ae74c9SRob Clark msm_gem_unlock(obj); 362c8afe684SRob Clark return offset; 363c8afe684SRob Clark } 364c8afe684SRob Clark 3654b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3664b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3674b85f7f5SRob Clark { 3684b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3694b85f7f5SRob Clark struct msm_gem_vma *vma; 3704b85f7f5SRob Clark 371d4d7d363SRob Clark msm_gem_assert_locked(obj); 3720e08270aSSushmita Susheelendra 373fc2f0756SRob Clark vma = msm_gem_vma_new(aspace); 3744b85f7f5SRob Clark if (!vma) 3754b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3764b85f7f5SRob Clark 3774b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3784b85f7f5SRob Clark 3794b85f7f5SRob Clark return vma; 3804b85f7f5SRob Clark } 3814b85f7f5SRob Clark 3824b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3834b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3844b85f7f5SRob Clark { 3854b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3864b85f7f5SRob Clark struct msm_gem_vma *vma; 3874b85f7f5SRob Clark 388d4d7d363SRob Clark msm_gem_assert_locked(obj); 3894b85f7f5SRob Clark 3904b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3914b85f7f5SRob Clark if (vma->aspace == aspace) 3924b85f7f5SRob Clark return vma; 3934b85f7f5SRob Clark } 3944b85f7f5SRob Clark 3954b85f7f5SRob Clark return NULL; 3964b85f7f5SRob Clark } 3974b85f7f5SRob Clark 3984b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3994b85f7f5SRob Clark { 4004b85f7f5SRob Clark if (!vma) 4014b85f7f5SRob Clark return; 4024b85f7f5SRob Clark 4034b85f7f5SRob Clark list_del(&vma->list); 4044b85f7f5SRob Clark kfree(vma); 4054b85f7f5SRob Clark } 4064b85f7f5SRob Clark 40737c68900SLee Jones /* 40820d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 40920d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 41020d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 41120d0ae2fSRob Clark * mapping. 41220d0ae2fSRob Clark */ 4134fe5f65eSRob Clark static void 41420d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 4154fe5f65eSRob Clark { 4164fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4179b73bde3SIskren Chernev struct msm_gem_vma *vma; 4184fe5f65eSRob Clark 419d4d7d363SRob Clark msm_gem_assert_locked(obj); 4204fe5f65eSRob Clark 4219b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 422d67f1b6dSBrian Masney if (vma->aspace) { 423fc2f0756SRob Clark msm_gem_vma_purge(vma); 42420d0ae2fSRob Clark if (close) 425fc2f0756SRob Clark msm_gem_vma_close(vma); 426d67f1b6dSBrian Masney } 4279b73bde3SIskren Chernev } 4289b73bde3SIskren Chernev } 4299b73bde3SIskren Chernev 4309b73bde3SIskren Chernev /* Called with msm_obj locked */ 4319b73bde3SIskren Chernev static void 4329b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 4334fe5f65eSRob Clark { 4344fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4354fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 4364fe5f65eSRob Clark 437d4d7d363SRob Clark msm_gem_assert_locked(obj); 4384fe5f65eSRob Clark 4394b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 4404b85f7f5SRob Clark del_vma(vma); 4414fe5f65eSRob Clark } 4424fe5f65eSRob Clark } 4434fe5f65eSRob Clark 444522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 445522f1abfSRob Clark struct msm_gem_address_space *aspace, 446d3b8877eSJonathan Marek u64 range_start, u64 range_end) 447c8afe684SRob Clark { 4484b85f7f5SRob Clark struct msm_gem_vma *vma; 449c8afe684SRob Clark 450d4d7d363SRob Clark msm_gem_assert_locked(obj); 451cb1e3818SRob Clark 4524b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 453871d812aSRob Clark 4544b85f7f5SRob Clark if (!vma) { 455522f1abfSRob Clark int ret; 456522f1abfSRob Clark 4574b85f7f5SRob Clark vma = add_vma(obj, aspace); 458c0ee9794SJordan Crouse if (IS_ERR(vma)) 459522f1abfSRob Clark return vma; 4604b85f7f5SRob Clark 461fc2f0756SRob Clark ret = msm_gem_vma_init(vma, obj->size, 462d3b8877eSJonathan Marek range_start, range_end); 463c0ee9794SJordan Crouse if (ret) { 464c0ee9794SJordan Crouse del_vma(vma); 465522f1abfSRob Clark return ERR_PTR(ret); 466c8afe684SRob Clark } 467522f1abfSRob Clark } else { 468522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 469522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4704b85f7f5SRob Clark } 4714b85f7f5SRob Clark 472522f1abfSRob Clark return vma; 473c0ee9794SJordan Crouse } 4744b85f7f5SRob Clark 47527674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 476c0ee9794SJordan Crouse { 477c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 478c0ee9794SJordan Crouse struct page **pages; 479*fc896cf3SRob Clark int prot = IOMMU_READ; 480bbc2cd07SRob Clark 481bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 482bbc2cd07SRob Clark prot |= IOMMU_WRITE; 483c0ee9794SJordan Crouse 4840b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4850b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4860b462d7aSJonathan Marek 487d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 488d12e3390SJonathan Marek prot |= IOMMU_CACHE; 489d12e3390SJonathan Marek 490d4d7d363SRob Clark msm_gem_assert_locked(obj); 491c0ee9794SJordan Crouse 49216eb51abSRob Clark pages = msm_gem_pin_pages_locked(obj, MSM_MADV_WILLNEED); 493c0ee9794SJordan Crouse if (IS_ERR(pages)) 494c0ee9794SJordan Crouse return PTR_ERR(pages); 495c0ee9794SJordan Crouse 496*fc896cf3SRob Clark return msm_gem_vma_map(vma, prot, msm_obj->sgt, obj->size); 497c0ee9794SJordan Crouse } 498c0ee9794SJordan Crouse 499311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 50027674c66SRob Clark { 5016c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 50227674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 50327674c66SRob Clark 504d4d7d363SRob Clark msm_gem_assert_locked(obj); 50527674c66SRob Clark 5066c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 50727674c66SRob Clark msm_obj->pin_count--; 50827674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 5096c7c8fb8SRob Clark update_lru_locked(obj); 5106c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 51127674c66SRob Clark } 51227674c66SRob Clark 51317b704f1SRob Clark /* Special unpin path for use in fence-signaling path, avoiding the need 51417b704f1SRob Clark * to hold the obj lock by only depending on things that a protected by 51517b704f1SRob Clark * the LRU lock. In particular we know that that we already have backing 51617b704f1SRob Clark * and and that the object's dma_resv has the fence for the current 51717b704f1SRob Clark * submit/job which will prevent us racing against page eviction. 51817b704f1SRob Clark */ 51917b704f1SRob Clark void msm_gem_unpin_active(struct drm_gem_object *obj) 52017b704f1SRob Clark { 52117b704f1SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 52217b704f1SRob Clark 52317b704f1SRob Clark msm_obj->pin_count--; 52417b704f1SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 52517b704f1SRob Clark update_lru_active(obj); 52617b704f1SRob Clark } 52717b704f1SRob Clark 52827674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 52927674c66SRob Clark struct msm_gem_address_space *aspace) 53027674c66SRob Clark { 53127674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 53227674c66SRob Clark } 53327674c66SRob Clark 534e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 535d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 536d3b8877eSJonathan Marek u64 range_start, u64 range_end) 537c0ee9794SJordan Crouse { 538522f1abfSRob Clark struct msm_gem_vma *vma; 539c0ee9794SJordan Crouse int ret; 540c0ee9794SJordan Crouse 541d4d7d363SRob Clark msm_gem_assert_locked(obj); 542c0ee9794SJordan Crouse 543522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 544522f1abfSRob Clark if (IS_ERR(vma)) 545522f1abfSRob Clark return PTR_ERR(vma); 546c0ee9794SJordan Crouse 54727674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 548*fc896cf3SRob Clark if (!ret) { 549522f1abfSRob Clark *iova = vma->iova; 550*fc896cf3SRob Clark pin_obj_locked(obj); 551*fc896cf3SRob Clark } 552c0ee9794SJordan Crouse 553c8afe684SRob Clark return ret; 554c8afe684SRob Clark } 555c8afe684SRob Clark 556e4b87d22SRob Clark /* 557e4b87d22SRob Clark * get iova and pin it. Should have a matching put 558e4b87d22SRob Clark * limits iova to specified range (in pages) 559e4b87d22SRob Clark */ 560e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 561e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 562e4b87d22SRob Clark u64 range_start, u64 range_end) 563e4b87d22SRob Clark { 564e4b87d22SRob Clark int ret; 565e4b87d22SRob Clark 566e4b87d22SRob Clark msm_gem_lock(obj); 567e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 568e4b87d22SRob Clark msm_gem_unlock(obj); 569e4b87d22SRob Clark 570e4b87d22SRob Clark return ret; 571e4b87d22SRob Clark } 572e4b87d22SRob Clark 573d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 574d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 575d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 576d3b8877eSJonathan Marek { 577d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 578d3b8877eSJonathan Marek } 579d3b8877eSJonathan Marek 5807ad0e8cfSJordan Crouse /* 5817ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5827ad0e8cfSJordan Crouse * valid for the life of the object 5837ad0e8cfSJordan Crouse */ 5849fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5859fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5869fe041f6SJordan Crouse { 587522f1abfSRob Clark struct msm_gem_vma *vma; 588522f1abfSRob Clark int ret = 0; 5899fe041f6SJordan Crouse 590a6ae74c9SRob Clark msm_gem_lock(obj); 591522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 592522f1abfSRob Clark if (IS_ERR(vma)) { 593522f1abfSRob Clark ret = PTR_ERR(vma); 594522f1abfSRob Clark } else { 595522f1abfSRob Clark *iova = vma->iova; 596522f1abfSRob Clark } 597a6ae74c9SRob Clark msm_gem_unlock(obj); 5989fe041f6SJordan Crouse 5999fe041f6SJordan Crouse return ret; 6009fe041f6SJordan Crouse } 6019fe041f6SJordan Crouse 602a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 6038bdcd949SRob Clark struct msm_gem_address_space *aspace) 6042638d90aSRob Clark { 605a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 6064b85f7f5SRob Clark 607a636a0ffSRob Clark if (!vma) 608a636a0ffSRob Clark return 0; 6094b85f7f5SRob Clark 610a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 611a636a0ffSRob Clark return -EBUSY; 612a636a0ffSRob Clark 613fc2f0756SRob Clark msm_gem_vma_purge(vma); 614fc2f0756SRob Clark msm_gem_vma_close(vma); 615a636a0ffSRob Clark del_vma(vma); 616a636a0ffSRob Clark 617a636a0ffSRob Clark return 0; 6182638d90aSRob Clark } 6192638d90aSRob Clark 6207ad0e8cfSJordan Crouse /* 621a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 622a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 623a636a0ffSRob Clark * the life of the object. 624a636a0ffSRob Clark * 625a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 626e4b87d22SRob Clark */ 627a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 628a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 629e4b87d22SRob Clark { 630a636a0ffSRob Clark int ret = 0; 631a636a0ffSRob Clark 632a636a0ffSRob Clark msm_gem_lock(obj); 633a636a0ffSRob Clark if (!iova) { 634a636a0ffSRob Clark ret = clear_iova(obj, aspace); 635a636a0ffSRob Clark } else { 636e4b87d22SRob Clark struct msm_gem_vma *vma; 637a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 638a636a0ffSRob Clark if (IS_ERR(vma)) { 639a636a0ffSRob Clark ret = PTR_ERR(vma); 640a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 641a636a0ffSRob Clark clear_iova(obj, aspace); 642a636a0ffSRob Clark ret = -EBUSY; 64364fcbde7SRob Clark } 644e4b87d22SRob Clark } 645a636a0ffSRob Clark msm_gem_unlock(obj); 646a636a0ffSRob Clark 647a636a0ffSRob Clark return ret; 648a636a0ffSRob Clark } 649e4b87d22SRob Clark 650e4b87d22SRob Clark /* 6517ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 6527ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 6537ad0e8cfSJordan Crouse * to get rid of it 6547ad0e8cfSJordan Crouse */ 6557ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 6568bdcd949SRob Clark struct msm_gem_address_space *aspace) 657c8afe684SRob Clark { 65827674c66SRob Clark struct msm_gem_vma *vma; 65927674c66SRob Clark 660a6ae74c9SRob Clark msm_gem_lock(obj); 66127674c66SRob Clark vma = lookup_vma(obj, aspace); 66227674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 663fc2f0756SRob Clark msm_gem_vma_unpin(vma); 664311e03c2SRob Clark msm_gem_unpin_locked(obj); 66527674c66SRob Clark } 666a6ae74c9SRob Clark msm_gem_unlock(obj); 667c8afe684SRob Clark } 668c8afe684SRob Clark 669c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 670c8afe684SRob Clark struct drm_mode_create_dumb *args) 671c8afe684SRob Clark { 672c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 673c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 674c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 6750815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 676c8afe684SRob Clark } 677c8afe684SRob Clark 678c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 679c8afe684SRob Clark uint32_t handle, uint64_t *offset) 680c8afe684SRob Clark { 681c8afe684SRob Clark struct drm_gem_object *obj; 682c8afe684SRob Clark int ret = 0; 683c8afe684SRob Clark 684c8afe684SRob Clark /* GEM does all our handle to object mapping */ 685a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 686c8afe684SRob Clark if (obj == NULL) { 687c8afe684SRob Clark ret = -ENOENT; 688c8afe684SRob Clark goto fail; 689c8afe684SRob Clark } 690c8afe684SRob Clark 691c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 692c8afe684SRob Clark 693f7d33950SEmil Velikov drm_gem_object_put(obj); 694c8afe684SRob Clark 695c8afe684SRob Clark fail: 696c8afe684SRob Clark return ret; 697c8afe684SRob Clark } 698c8afe684SRob Clark 699fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 700c8afe684SRob Clark { 7010e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 702d6ae7d1cSRob Clark struct page **pages; 7030e08270aSSushmita Susheelendra int ret = 0; 7040e08270aSSushmita Susheelendra 705d4d7d363SRob Clark msm_gem_assert_locked(obj); 706e4b87d22SRob Clark 7078b6b7d84SDaniel Vetter if (obj->import_attach) 7088b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 7098b6b7d84SDaniel Vetter 71016eb51abSRob Clark pages = msm_gem_pin_pages_locked(obj, madv); 711d6ae7d1cSRob Clark if (IS_ERR(pages)) 712d6ae7d1cSRob Clark return ERR_CAST(pages); 713d6ae7d1cSRob Clark 714*fc896cf3SRob Clark pin_obj_locked(obj); 715*fc896cf3SRob Clark 7160e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 717a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 7180e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 7190e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 720a6ae74c9SRob Clark * hold msm_obj lock) 7210e08270aSSushmita Susheelendra */ 7220e08270aSSushmita Susheelendra msm_obj->vmap_count++; 7230e08270aSSushmita Susheelendra 7240e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 7250e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 726af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 7270e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 7280e08270aSSushmita Susheelendra ret = -ENOMEM; 7290e08270aSSushmita Susheelendra goto fail; 7300e08270aSSushmita Susheelendra } 7310e08270aSSushmita Susheelendra } 7320e08270aSSushmita Susheelendra 7330e08270aSSushmita Susheelendra return msm_obj->vaddr; 7340e08270aSSushmita Susheelendra 7350e08270aSSushmita Susheelendra fail: 736e1e9db2cSRob Clark msm_obj->vmap_count--; 737d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7380e08270aSSushmita Susheelendra return ERR_PTR(ret); 73918f23049SRob Clark } 74018f23049SRob Clark 741e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 742e4b87d22SRob Clark { 743e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 744e4b87d22SRob Clark } 745e4b87d22SRob Clark 746fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 747fad33f4bSRob Clark { 748e4b87d22SRob Clark void *ret; 749e4b87d22SRob Clark 750e4b87d22SRob Clark msm_gem_lock(obj); 751e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 752e4b87d22SRob Clark msm_gem_unlock(obj); 753e4b87d22SRob Clark 754e4b87d22SRob Clark return ret; 755fad33f4bSRob Clark } 756fad33f4bSRob Clark 757fad33f4bSRob Clark /* 758fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 759fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 760fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 761fad33f4bSRob Clark * active list. 762fad33f4bSRob Clark */ 763fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 764fad33f4bSRob Clark { 765fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 766fad33f4bSRob Clark } 767fad33f4bSRob Clark 768e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 76918f23049SRob Clark { 7700e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7710e08270aSSushmita Susheelendra 772d4d7d363SRob Clark msm_gem_assert_locked(obj); 77390643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 774e4b87d22SRob Clark 7750e08270aSSushmita Susheelendra msm_obj->vmap_count--; 776d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7774cd33c48SRob Clark } 7780e08270aSSushmita Susheelendra 7790e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7804cd33c48SRob Clark { 781a6ae74c9SRob Clark msm_gem_lock(obj); 782e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 783a6ae74c9SRob Clark msm_gem_unlock(obj); 7844cd33c48SRob Clark } 7854cd33c48SRob Clark 7864cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7874cd33c48SRob Clark * false or -errno. 7884cd33c48SRob Clark */ 7894cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7904cd33c48SRob Clark { 7916c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 7924cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7934cd33c48SRob Clark 794a6ae74c9SRob Clark msm_gem_lock(obj); 7954cd33c48SRob Clark 7966c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 7976c7c8fb8SRob Clark 7984cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 7994cd33c48SRob Clark msm_obj->madv = madv; 8004cd33c48SRob Clark 8010e08270aSSushmita Susheelendra madv = msm_obj->madv; 8020e08270aSSushmita Susheelendra 8033edfa30fSRob Clark /* If the obj is inactive, we might need to move it 8043edfa30fSRob Clark * between inactive lists 8053edfa30fSRob Clark */ 8066c7c8fb8SRob Clark update_lru_locked(obj); 8076c7c8fb8SRob Clark 8086c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 8093edfa30fSRob Clark 810a6ae74c9SRob Clark msm_gem_unlock(obj); 8110e08270aSSushmita Susheelendra 8120e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 8134cd33c48SRob Clark } 8144cd33c48SRob Clark 815599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 81668209390SRob Clark { 81768209390SRob Clark struct drm_device *dev = obj->dev; 8186c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 81968209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 82068209390SRob Clark 821d4d7d363SRob Clark msm_gem_assert_locked(obj); 82290643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 82368209390SRob Clark 82420d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 82520d0ae2fSRob Clark put_iova_spaces(obj, true); 8260e08270aSSushmita Susheelendra 827599089c6SRob Clark msm_gem_vunmap(obj); 82868209390SRob Clark 82981d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 83081d4d597SRob Clark 83168209390SRob Clark put_pages(obj); 83268209390SRob Clark 8339b73bde3SIskren Chernev put_iova_vmas(obj); 8349b73bde3SIskren Chernev 8356c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 8366c7c8fb8SRob Clark /* A one-way transition: */ 83768209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 8386c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 83968209390SRob Clark 84068209390SRob Clark drm_gem_free_mmap_offset(obj); 84168209390SRob Clark 84268209390SRob Clark /* Our goal here is to return as much of the memory as 84368209390SRob Clark * is possible back to the system as we are called from OOM. 84468209390SRob Clark * To do this we must instruct the shmfs to drop all of its 84568209390SRob Clark * backing pages, *now*. 84668209390SRob Clark */ 84768209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 84868209390SRob Clark 84968209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 85068209390SRob Clark 0, (loff_t)-1); 85168209390SRob Clark } 85268209390SRob Clark 85337c68900SLee Jones /* 85463f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 85563f17ef8SRob Clark */ 85663f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 85763f17ef8SRob Clark { 85863f17ef8SRob Clark struct drm_device *dev = obj->dev; 85963f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 86063f17ef8SRob Clark 861d4d7d363SRob Clark msm_gem_assert_locked(obj); 86263f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 86363f17ef8SRob Clark 86463f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 86563f17ef8SRob Clark put_iova_spaces(obj, false); 86663f17ef8SRob Clark 86763f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 86863f17ef8SRob Clark 86963f17ef8SRob Clark put_pages(obj); 87063f17ef8SRob Clark } 87163f17ef8SRob Clark 872599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 873e1e9db2cSRob Clark { 874e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 875e1e9db2cSRob Clark 876d4d7d363SRob Clark msm_gem_assert_locked(obj); 8770e08270aSSushmita Susheelendra 87890643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 879e1e9db2cSRob Clark return; 880e1e9db2cSRob Clark 881e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 882e1e9db2cSRob Clark msm_obj->vaddr = NULL; 883e1e9db2cSRob Clark } 884e1e9db2cSRob Clark 88501780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 88601780d02SRob Clark { 887d4d7d363SRob Clark msm_gem_assert_locked(obj); 88801780d02SRob Clark 88901780d02SRob Clark if (to_msm_bo(obj)->pin_count) 89001780d02SRob Clark return true; 89101780d02SRob Clark 89201780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 89301780d02SRob Clark } 89401780d02SRob Clark 895ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 896ba00c3f2SRob Clark { 897b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 898f755e227SChris Wilson unsigned long remain = 899f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 900f755e227SChris Wilson long ret; 901b6295f9aSRob Clark 902b5a24e13SRob Clark if (op & MSM_PREP_BOOST) { 903b5a24e13SRob Clark dma_resv_set_deadline(obj->resv, dma_resv_usage_rw(write), 904b5a24e13SRob Clark ktime_get()); 905b5a24e13SRob Clark } 906b5a24e13SRob Clark 9077bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 9087bc80a54SChristian König true, remain); 909f755e227SChris Wilson if (ret == 0) 910f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 911f755e227SChris Wilson else if (ret < 0) 912f755e227SChris Wilson return ret; 913ba00c3f2SRob Clark 9147198e6b0SRob Clark /* TODO cache maintenance */ 9157198e6b0SRob Clark 916b6295f9aSRob Clark return 0; 9177198e6b0SRob Clark } 9187198e6b0SRob Clark 9197198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 9207198e6b0SRob Clark { 9217198e6b0SRob Clark /* TODO cache maintenance */ 922c8afe684SRob Clark return 0; 923c8afe684SRob Clark } 924c8afe684SRob Clark 925c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 926528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 927528107c8SRob Clark struct msm_gem_stats *stats) 928c8afe684SRob Clark { 929c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 93052791eeeSChristian König struct dma_resv *robj = obj->resv; 9314b85f7f5SRob Clark struct msm_gem_vma *vma; 932c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9334cd33c48SRob Clark const char *madv; 934c8afe684SRob Clark 935a6ae74c9SRob Clark msm_gem_lock(obj); 936b6295f9aSRob Clark 937528107c8SRob Clark stats->all.count++; 938528107c8SRob Clark stats->all.size += obj->size; 939528107c8SRob Clark 940da53d8b5SRob Clark if (msm_gem_active(obj)) { 941528107c8SRob Clark stats->active.count++; 942528107c8SRob Clark stats->active.size += obj->size; 943528107c8SRob Clark } 944528107c8SRob Clark 945f48f3563SRob Clark if (msm_obj->pages) { 946f48f3563SRob Clark stats->resident.count++; 947f48f3563SRob Clark stats->resident.size += obj->size; 948f48f3563SRob Clark } 949f48f3563SRob Clark 9504cd33c48SRob Clark switch (msm_obj->madv) { 9514cd33c48SRob Clark case __MSM_MADV_PURGED: 952528107c8SRob Clark stats->purged.count++; 953528107c8SRob Clark stats->purged.size += obj->size; 9544cd33c48SRob Clark madv = " purged"; 9554cd33c48SRob Clark break; 9564cd33c48SRob Clark case MSM_MADV_DONTNEED: 9570054eeb7SRob Clark stats->purgeable.count++; 9580054eeb7SRob Clark stats->purgeable.size += obj->size; 9594cd33c48SRob Clark madv = " purgeable"; 9604cd33c48SRob Clark break; 9614cd33c48SRob Clark case MSM_MADV_WILLNEED: 9624cd33c48SRob Clark default: 9634cd33c48SRob Clark madv = ""; 9644cd33c48SRob Clark break; 9654cd33c48SRob Clark } 9664cd33c48SRob Clark 967575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 968da53d8b5SRob Clark msm_obj->flags, msm_gem_active(obj) ? 'A' : 'I', 9692c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 970667ce33eSRob Clark off, msm_obj->vaddr); 971667ce33eSRob Clark 9720815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 973667ce33eSRob Clark 974575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 975575f0485SJordan Crouse 976575f0485SJordan Crouse seq_puts(m, " vmas:"); 977575f0485SJordan Crouse 97825faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 97925faf2f2SRob Clark const char *name, *comm; 98025faf2f2SRob Clark if (vma->aspace) { 98125faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 98225faf2f2SRob Clark struct task_struct *task = 98325faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 98425faf2f2SRob Clark if (task) { 98525faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 986ac3e4f42SRob Clark put_task_struct(task); 98725faf2f2SRob Clark } else { 98825faf2f2SRob Clark comm = NULL; 98925faf2f2SRob Clark } 99025faf2f2SRob Clark name = aspace->name; 99125faf2f2SRob Clark } else { 99225faf2f2SRob Clark name = comm = NULL; 99325faf2f2SRob Clark } 99425faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 99525faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 99625faf2f2SRob Clark vma->aspace, vma->iova, 99725faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 998ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 99925faf2f2SRob Clark kfree(comm); 100025faf2f2SRob Clark } 1001575f0485SJordan Crouse 1002575f0485SJordan Crouse seq_puts(m, "\n"); 1003575f0485SJordan Crouse } 1004b6295f9aSRob Clark 1005f19ee2f3SChristian König dma_resv_describe(robj, m); 1006a6ae74c9SRob Clark msm_gem_unlock(obj); 1007c8afe684SRob Clark } 1008c8afe684SRob Clark 1009c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 1010c8afe684SRob Clark { 1011528107c8SRob Clark struct msm_gem_stats stats = {}; 1012c8afe684SRob Clark struct msm_gem_object *msm_obj; 1013c8afe684SRob Clark 10140815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 10156ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 1016c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 1017575f0485SJordan Crouse seq_puts(m, " "); 1018528107c8SRob Clark msm_gem_describe(obj, m, &stats); 1019c8afe684SRob Clark } 1020c8afe684SRob Clark 1021528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 1022528107c8SRob Clark stats.all.count, stats.all.size); 1023528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 1024528107c8SRob Clark stats.active.count, stats.active.size); 1025f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1026f48f3563SRob Clark stats.resident.count, stats.resident.size); 1027f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10280054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1029528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1030528107c8SRob Clark stats.purged.count, stats.purged.size); 1031c8afe684SRob Clark } 1032c8afe684SRob Clark #endif 1033c8afe684SRob Clark 1034030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 10356867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 1036c8afe684SRob Clark { 1037c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 103848e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 103948e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 104048e7f183SKristian H. Kristensen 10416ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10426ed0897cSRob Clark list_del(&msm_obj->node); 10436ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10446ed0897cSRob Clark 104520d0ae2fSRob Clark put_iova_spaces(obj, true); 1046c8afe684SRob Clark 104705b84911SRob Clark if (obj->import_attach) { 104890643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 104905b84911SRob Clark 105005b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 105105b84911SRob Clark * ours, just free the array we allocated: 105205b84911SRob Clark */ 10532098105eSMichal Hocko kvfree(msm_obj->pages); 105405b84911SRob Clark 105557f04815SRob Clark put_iova_vmas(obj); 105657f04815SRob Clark 1057f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 105805b84911SRob Clark } else { 1059599089c6SRob Clark msm_gem_vunmap(obj); 1060c8afe684SRob Clark put_pages(obj); 106157f04815SRob Clark put_iova_vmas(obj); 106205b84911SRob Clark } 1063c8afe684SRob Clark 1064c8afe684SRob Clark drm_gem_object_release(obj); 1065c8afe684SRob Clark 1066c8afe684SRob Clark kfree(msm_obj); 1067c8afe684SRob Clark } 1068c8afe684SRob Clark 1069510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1070510410bfSThomas Zimmermann { 1071510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1072510410bfSThomas Zimmermann 10731c71222eSSuren Baghdasaryan vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP); 1074510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1075510410bfSThomas Zimmermann 1076510410bfSThomas Zimmermann return 0; 1077510410bfSThomas Zimmermann } 1078510410bfSThomas Zimmermann 1079c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1080c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10810815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10820815d774SJordan Crouse char *name) 1083c8afe684SRob Clark { 1084c8afe684SRob Clark struct drm_gem_object *obj; 1085c8afe684SRob Clark int ret; 1086c8afe684SRob Clark 1087c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1088c8afe684SRob Clark 1089c8afe684SRob Clark if (IS_ERR(obj)) 1090c8afe684SRob Clark return PTR_ERR(obj); 1091c8afe684SRob Clark 10920815d774SJordan Crouse if (name) 10930815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10940815d774SJordan Crouse 1095c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1096c8afe684SRob Clark 1097c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1098f7d33950SEmil Velikov drm_gem_object_put(obj); 1099c8afe684SRob Clark 1100c8afe684SRob Clark return ret; 1101c8afe684SRob Clark } 1102c8afe684SRob Clark 11033e9757f5SRob Clark static enum drm_gem_object_status msm_gem_status(struct drm_gem_object *obj) 11043e9757f5SRob Clark { 11053e9757f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 11063e9757f5SRob Clark enum drm_gem_object_status status = 0; 11073e9757f5SRob Clark 11083e9757f5SRob Clark if (msm_obj->pages) 11093e9757f5SRob Clark status |= DRM_GEM_OBJECT_RESIDENT; 11103e9757f5SRob Clark 11113e9757f5SRob Clark if (msm_obj->madv == MSM_MADV_DONTNEED) 11123e9757f5SRob Clark status |= DRM_GEM_OBJECT_PURGEABLE; 11133e9757f5SRob Clark 11143e9757f5SRob Clark return status; 11153e9757f5SRob Clark } 11163e9757f5SRob Clark 11173c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 11183c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 11193c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 11203c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 11213c9edd9cSThomas Zimmermann }; 11223c9edd9cSThomas Zimmermann 11233c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 11243c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11253c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11263c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11273c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11283c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11293c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1130510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 11313e9757f5SRob Clark .status = msm_gem_status, 11323c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11333c9edd9cSThomas Zimmermann }; 11343c9edd9cSThomas Zimmermann 113505b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 113605b84911SRob Clark uint32_t size, uint32_t flags, 11373cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1138c8afe684SRob Clark { 1139d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1140c8afe684SRob Clark struct msm_gem_object *msm_obj; 1141c8afe684SRob Clark 1142c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1143c8afe684SRob Clark case MSM_BO_CACHED: 1144c8afe684SRob Clark case MSM_BO_WC: 1145c8afe684SRob Clark break; 1146d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1147d12e3390SJonathan Marek if (priv->has_cached_coherent) 1148d12e3390SJonathan Marek break; 1149e181ad43SGustavo A. R. Silva fallthrough; 1150c8afe684SRob Clark default: 11512d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1152c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 115305b84911SRob Clark return -EINVAL; 1154c8afe684SRob Clark } 1155c8afe684SRob Clark 1156667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 115705b84911SRob Clark if (!msm_obj) 115805b84911SRob Clark return -ENOMEM; 1159c8afe684SRob Clark 1160c8afe684SRob Clark msm_obj->flags = flags; 11614cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1162c8afe684SRob Clark 1163027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11644b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11654b85f7f5SRob Clark 116605b84911SRob Clark *obj = &msm_obj->base; 11673c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 116805b84911SRob Clark 116905b84911SRob Clark return 0; 117005b84911SRob Clark } 117105b84911SRob Clark 1172030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 117305b84911SRob Clark { 1174f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11753cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1176871d812aSRob Clark struct drm_gem_object *obj = NULL; 1177f4839bd5SRob Clark bool use_vram = false; 117805b84911SRob Clark int ret; 117905b84911SRob Clark 118005b84911SRob Clark size = PAGE_ALIGN(size); 118105b84911SRob Clark 1182c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1183f4839bd5SRob Clark use_vram = true; 118486f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1185f4839bd5SRob Clark use_vram = true; 1186f4839bd5SRob Clark 118790643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1188f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1189f4839bd5SRob Clark 11901a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11911a5dff5dSJordan Crouse * infrastructure grumpy 11921a5dff5dSJordan Crouse */ 11931a5dff5dSJordan Crouse if (size == 0) 11941a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11951a5dff5dSJordan Crouse 11963cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 119705b84911SRob Clark if (ret) 11982203bd0eSDan Carpenter return ERR_PTR(ret); 119905b84911SRob Clark 12003cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 12013cbdc8d8SAkhil P Oommen 1202f4839bd5SRob Clark if (use_vram) { 12034b85f7f5SRob Clark struct msm_gem_vma *vma; 1204f4839bd5SRob Clark struct page **pages; 1205b3949a9aSHans Verkuil 1206a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1207a694ffedSIskren Chernev 1208a6ae74c9SRob Clark msm_gem_lock(obj); 1209f4839bd5SRob Clark 12104b85f7f5SRob Clark vma = add_vma(obj, NULL); 1211a6ae74c9SRob Clark msm_gem_unlock(obj); 12124b85f7f5SRob Clark if (IS_ERR(vma)) { 12134b85f7f5SRob Clark ret = PTR_ERR(vma); 12144b85f7f5SRob Clark goto fail; 12154b85f7f5SRob Clark } 12164b85f7f5SRob Clark 12174b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 12184b85f7f5SRob Clark 121907fcad0dSIskren Chernev msm_gem_lock(obj); 1220f4839bd5SRob Clark pages = get_pages(obj); 122107fcad0dSIskren Chernev msm_gem_unlock(obj); 1222f4839bd5SRob Clark if (IS_ERR(pages)) { 1223f4839bd5SRob Clark ret = PTR_ERR(pages); 1224f4839bd5SRob Clark goto fail; 1225f4839bd5SRob Clark } 12264b85f7f5SRob Clark 12274b85f7f5SRob Clark vma->iova = physaddr(obj); 1228f4839bd5SRob Clark } else { 122905b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 123005b84911SRob Clark if (ret) 123105b84911SRob Clark goto fail; 12320abdba47SLucas Stach /* 12330abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12340abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12350abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12360abdba47SLucas Stach * expected if you're going to pin these pages. 12370abdba47SLucas Stach */ 12380abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1239871d812aSRob Clark } 124005b84911SRob Clark 1241b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.unbacked, obj); 12423cbdc8d8SAkhil P Oommen 12436ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12446ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12456ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12466ed0897cSRob Clark 124705b84911SRob Clark return obj; 124805b84911SRob Clark 124905b84911SRob Clark fail: 1250f7d33950SEmil Velikov drm_gem_object_put(obj); 125105b84911SRob Clark return ERR_PTR(ret); 125205b84911SRob Clark } 125305b84911SRob Clark 125405b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 125579f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 125605b84911SRob Clark { 12573cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 125805b84911SRob Clark struct msm_gem_object *msm_obj; 125905b84911SRob Clark struct drm_gem_object *obj; 126079f0e202SRob Clark uint32_t size; 126105b84911SRob Clark int ret, npages; 126205b84911SRob Clark 1263871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1264c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12656a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1266871d812aSRob Clark return ERR_PTR(-EINVAL); 1267871d812aSRob Clark } 1268871d812aSRob Clark 126979f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 127005b84911SRob Clark 12713cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 127205b84911SRob Clark if (ret) 12732203bd0eSDan Carpenter return ERR_PTR(ret); 127405b84911SRob Clark 127505b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 127605b84911SRob Clark 127705b84911SRob Clark npages = size / PAGE_SIZE; 127805b84911SRob Clark 127905b84911SRob Clark msm_obj = to_msm_bo(obj); 1280a6ae74c9SRob Clark msm_gem_lock(obj); 128105b84911SRob Clark msm_obj->sgt = sgt; 12822098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 128305b84911SRob Clark if (!msm_obj->pages) { 1284a6ae74c9SRob Clark msm_gem_unlock(obj); 128505b84911SRob Clark ret = -ENOMEM; 128605b84911SRob Clark goto fail; 128705b84911SRob Clark } 128805b84911SRob Clark 1289c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12900e08270aSSushmita Susheelendra if (ret) { 1291a6ae74c9SRob Clark msm_gem_unlock(obj); 129205b84911SRob Clark goto fail; 12930e08270aSSushmita Susheelendra } 129405b84911SRob Clark 1295a6ae74c9SRob Clark msm_gem_unlock(obj); 12963cbdc8d8SAkhil P Oommen 1297b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.pinned, obj); 12983cbdc8d8SAkhil P Oommen 12996ed0897cSRob Clark mutex_lock(&priv->obj_lock); 13006ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 13016ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 13026ed0897cSRob Clark 1303c8afe684SRob Clark return obj; 1304c8afe684SRob Clark 1305c8afe684SRob Clark fail: 1306f7d33950SEmil Velikov drm_gem_object_put(obj); 1307c8afe684SRob Clark return ERR_PTR(ret); 1308c8afe684SRob Clark } 13098223286dSJordan Crouse 1310030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13118223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1312030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 13138223286dSJordan Crouse { 13148223286dSJordan Crouse void *vaddr; 1315030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 13168223286dSJordan Crouse int ret; 13178223286dSJordan Crouse 13188223286dSJordan Crouse if (IS_ERR(obj)) 13198223286dSJordan Crouse return ERR_CAST(obj); 13208223286dSJordan Crouse 13218223286dSJordan Crouse if (iova) { 13229fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 132393f7abf1SJordan Crouse if (ret) 132493f7abf1SJordan Crouse goto err; 13258223286dSJordan Crouse } 13268223286dSJordan Crouse 13278223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1328c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13297ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 133093f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 133193f7abf1SJordan Crouse goto err; 13328223286dSJordan Crouse } 13338223286dSJordan Crouse 13348223286dSJordan Crouse if (bo) 13358223286dSJordan Crouse *bo = obj; 13368223286dSJordan Crouse 13378223286dSJordan Crouse return vaddr; 133893f7abf1SJordan Crouse err: 1339f7d33950SEmil Velikov drm_gem_object_put(obj); 134093f7abf1SJordan Crouse 134193f7abf1SJordan Crouse return ERR_PTR(ret); 134293f7abf1SJordan Crouse 13438223286dSJordan Crouse } 13448223286dSJordan Crouse 13451e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1346030af2b0SRob Clark struct msm_gem_address_space *aspace) 13471e29dff0SJordan Crouse { 13481e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13491e29dff0SJordan Crouse return; 13501e29dff0SJordan Crouse 13511e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13527ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1353f7d33950SEmil Velikov drm_gem_object_put(bo); 13541e29dff0SJordan Crouse } 13550815d774SJordan Crouse 13560815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13570815d774SJordan Crouse { 13580815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13590815d774SJordan Crouse va_list ap; 13600815d774SJordan Crouse 13610815d774SJordan Crouse if (!fmt) 13620815d774SJordan Crouse return; 13630815d774SJordan Crouse 13640815d774SJordan Crouse va_start(ap, fmt); 13650815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13660815d774SJordan Crouse va_end(ap); 13670815d774SJordan Crouse } 1368