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 64*6c7c8fb8SRob Clark static void update_lru_locked(struct drm_gem_object *obj) 654a02a376SRob Clark { 664a02a376SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 674a02a376SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 684a02a376SRob Clark 694a02a376SRob Clark msm_gem_assert_locked(&msm_obj->base); 704a02a376SRob Clark 714a02a376SRob Clark if (!msm_obj->pages) { 724a02a376SRob Clark GEM_WARN_ON(msm_obj->pin_count); 734a02a376SRob Clark 74*6c7c8fb8SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.unbacked, obj); 754a02a376SRob Clark } else if (msm_obj->pin_count) { 76*6c7c8fb8SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.pinned, obj); 774a02a376SRob Clark } else if (msm_obj->madv == MSM_MADV_WILLNEED) { 78*6c7c8fb8SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.willneed, obj); 794a02a376SRob Clark } else { 804a02a376SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_DONTNEED); 814a02a376SRob Clark 82*6c7c8fb8SRob Clark drm_gem_lru_move_tail_locked(&priv->lru.dontneed, obj); 834a02a376SRob Clark } 844a02a376SRob Clark } 854a02a376SRob Clark 86*6c7c8fb8SRob Clark static void update_lru(struct drm_gem_object *obj) 87*6c7c8fb8SRob Clark { 88*6c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 89*6c7c8fb8SRob Clark 90*6c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 91*6c7c8fb8SRob Clark update_lru_locked(obj); 92*6c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 93*6c7c8fb8SRob Clark } 94*6c7c8fb8SRob Clark 95871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 960e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 97871d812aSRob Clark { 98871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 100871d812aSRob Clark dma_addr_t paddr; 101871d812aSRob Clark struct page **p; 102871d812aSRob Clark int ret, i; 103871d812aSRob Clark 1042098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 105871d812aSRob Clark if (!p) 106871d812aSRob Clark return ERR_PTR(-ENOMEM); 107871d812aSRob Clark 1080e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1094e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 1100e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 111871d812aSRob Clark if (ret) { 1122098105eSMichal Hocko kvfree(p); 113871d812aSRob Clark return ERR_PTR(ret); 114871d812aSRob Clark } 115871d812aSRob Clark 116871d812aSRob Clark paddr = physaddr(obj); 117871d812aSRob Clark for (i = 0; i < npages; i++) { 118b3ed524fSChristian König p[i] = pfn_to_page(__phys_to_pfn(paddr)); 119871d812aSRob Clark paddr += PAGE_SIZE; 120871d812aSRob Clark } 121871d812aSRob Clark 122871d812aSRob Clark return p; 123871d812aSRob Clark } 124c8afe684SRob Clark 125c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 126c8afe684SRob Clark { 127c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 128c8afe684SRob Clark 129d4d7d363SRob Clark msm_gem_assert_locked(obj); 13007fcad0dSIskren Chernev 131c8afe684SRob Clark if (!msm_obj->pages) { 132c8afe684SRob Clark struct drm_device *dev = obj->dev; 133871d812aSRob Clark struct page **p; 134c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 135c8afe684SRob Clark 136072f1f91SRob Clark if (use_pages(obj)) 1370cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 138871d812aSRob Clark else 139871d812aSRob Clark p = get_pages_vram(obj, npages); 140871d812aSRob Clark 141c8afe684SRob Clark if (IS_ERR(p)) { 1426a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 143c8afe684SRob Clark PTR_ERR(p)); 144c8afe684SRob Clark return p; 145c8afe684SRob Clark } 146c8afe684SRob Clark 14762e3a3e3SPrakash Kamliya msm_obj->pages = p; 14862e3a3e3SPrakash Kamliya 149707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1501f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 15162e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 152c8afe684SRob Clark 1536a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 15462e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 15562e3a3e3SPrakash Kamliya return ptr; 15662e3a3e3SPrakash Kamliya } 157c8afe684SRob Clark 158c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 159c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 160c8afe684SRob Clark */ 1618b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 1623de433c5SRob Clark sync_for_device(msm_obj); 16364fcbde7SRob Clark 164901df24dSRob Clark update_lru(obj); 165c8afe684SRob Clark } 166c8afe684SRob Clark 167c8afe684SRob Clark return msm_obj->pages; 168c8afe684SRob Clark } 169c8afe684SRob Clark 1700e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1710e08270aSSushmita Susheelendra { 1720e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1730e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1740e08270aSSushmita Susheelendra 1750e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1760e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1770e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1780e08270aSSushmita Susheelendra 1790e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1800e08270aSSushmita Susheelendra } 1810e08270aSSushmita Susheelendra 182c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 183c8afe684SRob Clark { 184c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 185c8afe684SRob Clark 186c8afe684SRob Clark if (msm_obj->pages) { 1873976626eSBen Hutchings if (msm_obj->sgt) { 1883976626eSBen Hutchings /* For non-cached buffers, ensure the new 1893976626eSBen Hutchings * pages are clean because display controller, 1903976626eSBen Hutchings * GPU, etc. are not coherent: 191c8afe684SRob Clark */ 1928b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 1933de433c5SRob Clark sync_for_cpu(msm_obj); 19462e3a3e3SPrakash Kamliya 195c8afe684SRob Clark sg_free_table(msm_obj->sgt); 196c8afe684SRob Clark kfree(msm_obj->sgt); 197b9a31d0dSRob Clark msm_obj->sgt = NULL; 1983976626eSBen Hutchings } 199c8afe684SRob Clark 200072f1f91SRob Clark if (use_pages(obj)) 201c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 2020e08270aSSushmita Susheelendra else 2030e08270aSSushmita Susheelendra put_pages_vram(obj); 204871d812aSRob Clark 205c8afe684SRob Clark msm_obj->pages = NULL; 206b352ba54SRob Clark update_lru(obj); 207c8afe684SRob Clark } 208c8afe684SRob Clark } 209c8afe684SRob Clark 210e7cd5ee9SRob Clark static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj) 21105b84911SRob Clark { 212*6c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 2130e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 21405b84911SRob Clark struct page **p; 2150e08270aSSushmita Susheelendra 216d4d7d363SRob Clark msm_gem_assert_locked(obj); 2170e08270aSSushmita Susheelendra 21890643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 2190e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 2200e08270aSSushmita Susheelendra } 2210e08270aSSushmita Susheelendra 22205b84911SRob Clark p = get_pages(obj); 223*6c7c8fb8SRob Clark if (IS_ERR(p)) 224*6c7c8fb8SRob Clark return p; 225*6c7c8fb8SRob Clark 226*6c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 227*6c7c8fb8SRob Clark msm_obj->pin_count++; 228*6c7c8fb8SRob Clark update_lru_locked(obj); 229*6c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 23010f76165SRob Clark 23105b84911SRob Clark return p; 23205b84911SRob Clark } 23305b84911SRob Clark 234e7cd5ee9SRob Clark struct page **msm_gem_pin_pages(struct drm_gem_object *obj) 235e7cd5ee9SRob Clark { 236e7cd5ee9SRob Clark struct page **p; 237e7cd5ee9SRob Clark 238e7cd5ee9SRob Clark msm_gem_lock(obj); 239e7cd5ee9SRob Clark p = msm_gem_pin_pages_locked(obj); 240e7cd5ee9SRob Clark msm_gem_unlock(obj); 241e7cd5ee9SRob Clark 242e7cd5ee9SRob Clark return p; 243e7cd5ee9SRob Clark } 244e7cd5ee9SRob Clark 245e7cd5ee9SRob Clark void msm_gem_unpin_pages(struct drm_gem_object *obj) 24605b84911SRob Clark { 24710f76165SRob Clark msm_gem_lock(obj); 2489fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 24910f76165SRob Clark msm_gem_unlock(obj); 25005b84911SRob Clark } 25105b84911SRob Clark 252af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 253af9b3547SJonathan Marek { 2548b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 255af9b3547SJonathan Marek return pgprot_writecombine(prot); 256af9b3547SJonathan Marek return prot; 257af9b3547SJonathan Marek } 258af9b3547SJonathan Marek 2593c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 260c8afe684SRob Clark { 26111bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 262c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2630e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 264c8afe684SRob Clark struct page **pages; 265c8afe684SRob Clark unsigned long pfn; 266c8afe684SRob Clark pgoff_t pgoff; 267a5f74ec7SSouptick Joarder int err; 268a5f74ec7SSouptick Joarder vm_fault_t ret; 269c8afe684SRob Clark 2700e08270aSSushmita Susheelendra /* 2710e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2720e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 273d78d383aSRob Clark */ 274a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 275a5f74ec7SSouptick Joarder if (err) { 276a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 277c8afe684SRob Clark goto out; 278a5f74ec7SSouptick Joarder } 279c8afe684SRob Clark 28090643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 281a6ae74c9SRob Clark msm_gem_unlock(obj); 2820e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2830e08270aSSushmita Susheelendra } 2840e08270aSSushmita Susheelendra 285c8afe684SRob Clark /* make sure we have pages attached now */ 286c8afe684SRob Clark pages = get_pages(obj); 287c8afe684SRob Clark if (IS_ERR(pages)) { 288a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 289c8afe684SRob Clark goto out_unlock; 290c8afe684SRob Clark } 291c8afe684SRob Clark 292c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2931a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 294c8afe684SRob Clark 295871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 296c8afe684SRob Clark 2971a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 298c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 299c8afe684SRob Clark 3008246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 3018246913aSRob Clark 302c8afe684SRob Clark out_unlock: 303a6ae74c9SRob Clark msm_gem_unlock(obj); 304c8afe684SRob Clark out: 305a5f74ec7SSouptick Joarder return ret; 306c8afe684SRob Clark } 307c8afe684SRob Clark 308c8afe684SRob Clark /** get mmap offset */ 309c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 310c8afe684SRob Clark { 311c8afe684SRob Clark struct drm_device *dev = obj->dev; 312c8afe684SRob Clark int ret; 313c8afe684SRob Clark 314d4d7d363SRob Clark msm_gem_assert_locked(obj); 315c8afe684SRob Clark 316c8afe684SRob Clark /* Make it mmapable */ 317c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 318c8afe684SRob Clark 319c8afe684SRob Clark if (ret) { 3206a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 321c8afe684SRob Clark return 0; 322c8afe684SRob Clark } 323c8afe684SRob Clark 324c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 325c8afe684SRob Clark } 326c8afe684SRob Clark 327c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 328c8afe684SRob Clark { 329c8afe684SRob Clark uint64_t offset; 3300e08270aSSushmita Susheelendra 331a6ae74c9SRob Clark msm_gem_lock(obj); 332c8afe684SRob Clark offset = mmap_offset(obj); 333a6ae74c9SRob Clark msm_gem_unlock(obj); 334c8afe684SRob Clark return offset; 335c8afe684SRob Clark } 336c8afe684SRob Clark 3374b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3384b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3394b85f7f5SRob Clark { 3404b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3414b85f7f5SRob Clark struct msm_gem_vma *vma; 3424b85f7f5SRob Clark 343d4d7d363SRob Clark msm_gem_assert_locked(obj); 3440e08270aSSushmita Susheelendra 345fc2f0756SRob Clark vma = msm_gem_vma_new(aspace); 3464b85f7f5SRob Clark if (!vma) 3474b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3484b85f7f5SRob Clark 3494b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3504b85f7f5SRob Clark 3514b85f7f5SRob Clark return vma; 3524b85f7f5SRob Clark } 3534b85f7f5SRob Clark 3544b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3554b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3564b85f7f5SRob Clark { 3574b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3584b85f7f5SRob Clark struct msm_gem_vma *vma; 3594b85f7f5SRob Clark 360d4d7d363SRob Clark msm_gem_assert_locked(obj); 3614b85f7f5SRob Clark 3624b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3634b85f7f5SRob Clark if (vma->aspace == aspace) 3644b85f7f5SRob Clark return vma; 3654b85f7f5SRob Clark } 3664b85f7f5SRob Clark 3674b85f7f5SRob Clark return NULL; 3684b85f7f5SRob Clark } 3694b85f7f5SRob Clark 3704b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3714b85f7f5SRob Clark { 3724b85f7f5SRob Clark if (!vma) 3734b85f7f5SRob Clark return; 3744b85f7f5SRob Clark 3754b85f7f5SRob Clark list_del(&vma->list); 3764b85f7f5SRob Clark kfree(vma); 3774b85f7f5SRob Clark } 3784b85f7f5SRob Clark 37937c68900SLee Jones /* 38020d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 38120d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 38220d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 38320d0ae2fSRob Clark * mapping. 38420d0ae2fSRob Clark */ 3854fe5f65eSRob Clark static void 38620d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3874fe5f65eSRob Clark { 3884fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3899b73bde3SIskren Chernev struct msm_gem_vma *vma; 3904fe5f65eSRob Clark 391d4d7d363SRob Clark msm_gem_assert_locked(obj); 3924fe5f65eSRob Clark 3939b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 394d67f1b6dSBrian Masney if (vma->aspace) { 395fc2f0756SRob Clark msm_gem_vma_purge(vma); 39620d0ae2fSRob Clark if (close) 397fc2f0756SRob Clark msm_gem_vma_close(vma); 398d67f1b6dSBrian Masney } 3999b73bde3SIskren Chernev } 4009b73bde3SIskren Chernev } 4019b73bde3SIskren Chernev 4029b73bde3SIskren Chernev /* Called with msm_obj locked */ 4039b73bde3SIskren Chernev static void 4049b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 4054fe5f65eSRob Clark { 4064fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4074fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 4084fe5f65eSRob Clark 409d4d7d363SRob Clark msm_gem_assert_locked(obj); 4104fe5f65eSRob Clark 4114b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 4124b85f7f5SRob Clark del_vma(vma); 4134fe5f65eSRob Clark } 4144fe5f65eSRob Clark } 4154fe5f65eSRob Clark 416522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 417522f1abfSRob Clark struct msm_gem_address_space *aspace, 418d3b8877eSJonathan Marek u64 range_start, u64 range_end) 419c8afe684SRob Clark { 4204b85f7f5SRob Clark struct msm_gem_vma *vma; 421c8afe684SRob Clark 422d4d7d363SRob Clark msm_gem_assert_locked(obj); 423cb1e3818SRob Clark 4244b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 425871d812aSRob Clark 4264b85f7f5SRob Clark if (!vma) { 427522f1abfSRob Clark int ret; 428522f1abfSRob Clark 4294b85f7f5SRob Clark vma = add_vma(obj, aspace); 430c0ee9794SJordan Crouse if (IS_ERR(vma)) 431522f1abfSRob Clark return vma; 4324b85f7f5SRob Clark 433fc2f0756SRob Clark ret = msm_gem_vma_init(vma, obj->size, 434d3b8877eSJonathan Marek range_start, range_end); 435c0ee9794SJordan Crouse if (ret) { 436c0ee9794SJordan Crouse del_vma(vma); 437522f1abfSRob Clark return ERR_PTR(ret); 438c8afe684SRob Clark } 439522f1abfSRob Clark } else { 440522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 441522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4424b85f7f5SRob Clark } 4434b85f7f5SRob Clark 444522f1abfSRob Clark return vma; 445c0ee9794SJordan Crouse } 4464b85f7f5SRob Clark 44727674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 448c0ee9794SJordan Crouse { 449c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 450c0ee9794SJordan Crouse struct page **pages; 45164fcbde7SRob Clark int ret, prot = IOMMU_READ; 452bbc2cd07SRob Clark 453bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 454bbc2cd07SRob Clark prot |= IOMMU_WRITE; 455c0ee9794SJordan Crouse 4560b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4570b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4580b462d7aSJonathan Marek 459d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 460d12e3390SJonathan Marek prot |= IOMMU_CACHE; 461d12e3390SJonathan Marek 462d4d7d363SRob Clark msm_gem_assert_locked(obj); 463c0ee9794SJordan Crouse 46490643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 465c0ee9794SJordan Crouse return -EBUSY; 466c0ee9794SJordan Crouse 4679fd5ff7fSRob Clark pages = msm_gem_pin_pages_locked(obj); 468c0ee9794SJordan Crouse if (IS_ERR(pages)) 469c0ee9794SJordan Crouse return PTR_ERR(pages); 470c0ee9794SJordan Crouse 471fc2f0756SRob Clark ret = msm_gem_vma_map(vma, prot, msm_obj->sgt, obj->size); 4729fd5ff7fSRob Clark if (ret) 4739fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 47464fcbde7SRob Clark 47564fcbde7SRob Clark return ret; 476c0ee9794SJordan Crouse } 477c0ee9794SJordan Crouse 478311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 47927674c66SRob Clark { 480*6c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 48127674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 48227674c66SRob Clark 483d4d7d363SRob Clark msm_gem_assert_locked(obj); 48427674c66SRob Clark 485*6c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 48627674c66SRob Clark msm_obj->pin_count--; 48727674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 488*6c7c8fb8SRob Clark update_lru_locked(obj); 489*6c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 49027674c66SRob Clark } 49127674c66SRob Clark 49227674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 49327674c66SRob Clark struct msm_gem_address_space *aspace) 49427674c66SRob Clark { 49527674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 49627674c66SRob Clark } 49727674c66SRob Clark 498e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 499d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 500d3b8877eSJonathan Marek u64 range_start, u64 range_end) 501c0ee9794SJordan Crouse { 502522f1abfSRob Clark struct msm_gem_vma *vma; 503c0ee9794SJordan Crouse int ret; 504c0ee9794SJordan Crouse 505d4d7d363SRob Clark msm_gem_assert_locked(obj); 506c0ee9794SJordan Crouse 507522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 508522f1abfSRob Clark if (IS_ERR(vma)) 509522f1abfSRob Clark return PTR_ERR(vma); 510c0ee9794SJordan Crouse 51127674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 512c0ee9794SJordan Crouse if (!ret) 513522f1abfSRob Clark *iova = vma->iova; 514c0ee9794SJordan Crouse 515c8afe684SRob Clark return ret; 516c8afe684SRob Clark } 517c8afe684SRob Clark 518e4b87d22SRob Clark /* 519e4b87d22SRob Clark * get iova and pin it. Should have a matching put 520e4b87d22SRob Clark * limits iova to specified range (in pages) 521e4b87d22SRob Clark */ 522e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 523e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 524e4b87d22SRob Clark u64 range_start, u64 range_end) 525e4b87d22SRob Clark { 526e4b87d22SRob Clark int ret; 527e4b87d22SRob Clark 528e4b87d22SRob Clark msm_gem_lock(obj); 529e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 530e4b87d22SRob Clark msm_gem_unlock(obj); 531e4b87d22SRob Clark 532e4b87d22SRob Clark return ret; 533e4b87d22SRob Clark } 534e4b87d22SRob Clark 535d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 536d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 537d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 538d3b8877eSJonathan Marek { 539d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 540d3b8877eSJonathan Marek } 541d3b8877eSJonathan Marek 5427ad0e8cfSJordan Crouse /* 5437ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5447ad0e8cfSJordan Crouse * valid for the life of the object 5457ad0e8cfSJordan Crouse */ 5469fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5479fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5489fe041f6SJordan Crouse { 549522f1abfSRob Clark struct msm_gem_vma *vma; 550522f1abfSRob Clark int ret = 0; 5519fe041f6SJordan Crouse 552a6ae74c9SRob Clark msm_gem_lock(obj); 553522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 554522f1abfSRob Clark if (IS_ERR(vma)) { 555522f1abfSRob Clark ret = PTR_ERR(vma); 556522f1abfSRob Clark } else { 557522f1abfSRob Clark *iova = vma->iova; 558522f1abfSRob Clark } 559a6ae74c9SRob Clark msm_gem_unlock(obj); 5609fe041f6SJordan Crouse 5619fe041f6SJordan Crouse return ret; 5629fe041f6SJordan Crouse } 5639fe041f6SJordan Crouse 564a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 5658bdcd949SRob Clark struct msm_gem_address_space *aspace) 5662638d90aSRob Clark { 567a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 5684b85f7f5SRob Clark 569a636a0ffSRob Clark if (!vma) 570a636a0ffSRob Clark return 0; 5714b85f7f5SRob Clark 572a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 573a636a0ffSRob Clark return -EBUSY; 574a636a0ffSRob Clark 575fc2f0756SRob Clark msm_gem_vma_purge(vma); 576fc2f0756SRob Clark msm_gem_vma_close(vma); 577a636a0ffSRob Clark del_vma(vma); 578a636a0ffSRob Clark 579a636a0ffSRob Clark return 0; 5802638d90aSRob Clark } 5812638d90aSRob Clark 5827ad0e8cfSJordan Crouse /* 583a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 584a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 585a636a0ffSRob Clark * the life of the object. 586a636a0ffSRob Clark * 587a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 588e4b87d22SRob Clark */ 589a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 590a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 591e4b87d22SRob Clark { 592a636a0ffSRob Clark int ret = 0; 593a636a0ffSRob Clark 594a636a0ffSRob Clark msm_gem_lock(obj); 595a636a0ffSRob Clark if (!iova) { 596a636a0ffSRob Clark ret = clear_iova(obj, aspace); 597a636a0ffSRob Clark } else { 598e4b87d22SRob Clark struct msm_gem_vma *vma; 599a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 600a636a0ffSRob Clark if (IS_ERR(vma)) { 601a636a0ffSRob Clark ret = PTR_ERR(vma); 602a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 603a636a0ffSRob Clark clear_iova(obj, aspace); 604a636a0ffSRob Clark ret = -EBUSY; 60564fcbde7SRob Clark } 606e4b87d22SRob Clark } 607a636a0ffSRob Clark msm_gem_unlock(obj); 608a636a0ffSRob Clark 609a636a0ffSRob Clark return ret; 610a636a0ffSRob Clark } 611e4b87d22SRob Clark 612e4b87d22SRob Clark /* 6137ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 6147ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 6157ad0e8cfSJordan Crouse * to get rid of it 6167ad0e8cfSJordan Crouse */ 6177ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 6188bdcd949SRob Clark struct msm_gem_address_space *aspace) 619c8afe684SRob Clark { 62027674c66SRob Clark struct msm_gem_vma *vma; 62127674c66SRob Clark 622a6ae74c9SRob Clark msm_gem_lock(obj); 62327674c66SRob Clark vma = lookup_vma(obj, aspace); 62427674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 625fc2f0756SRob Clark msm_gem_vma_unpin(vma); 626311e03c2SRob Clark msm_gem_unpin_locked(obj); 62727674c66SRob Clark } 628a6ae74c9SRob Clark msm_gem_unlock(obj); 629c8afe684SRob Clark } 630c8afe684SRob Clark 631c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 632c8afe684SRob Clark struct drm_mode_create_dumb *args) 633c8afe684SRob Clark { 634c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 635c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 636c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 6370815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 638c8afe684SRob Clark } 639c8afe684SRob Clark 640c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 641c8afe684SRob Clark uint32_t handle, uint64_t *offset) 642c8afe684SRob Clark { 643c8afe684SRob Clark struct drm_gem_object *obj; 644c8afe684SRob Clark int ret = 0; 645c8afe684SRob Clark 646c8afe684SRob Clark /* GEM does all our handle to object mapping */ 647a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 648c8afe684SRob Clark if (obj == NULL) { 649c8afe684SRob Clark ret = -ENOENT; 650c8afe684SRob Clark goto fail; 651c8afe684SRob Clark } 652c8afe684SRob Clark 653c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 654c8afe684SRob Clark 655f7d33950SEmil Velikov drm_gem_object_put(obj); 656c8afe684SRob Clark 657c8afe684SRob Clark fail: 658c8afe684SRob Clark return ret; 659c8afe684SRob Clark } 660c8afe684SRob Clark 661fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 662c8afe684SRob Clark { 6630e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 664d6ae7d1cSRob Clark struct page **pages; 6650e08270aSSushmita Susheelendra int ret = 0; 6660e08270aSSushmita Susheelendra 667d4d7d363SRob Clark msm_gem_assert_locked(obj); 668e4b87d22SRob Clark 6698b6b7d84SDaniel Vetter if (obj->import_attach) 6708b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6718b6b7d84SDaniel Vetter 67290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6736a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 674fad33f4bSRob Clark msm_obj->madv, madv); 6750e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 676c8afe684SRob Clark } 677c8afe684SRob Clark 678d6ae7d1cSRob Clark pages = msm_gem_pin_pages_locked(obj); 679d6ae7d1cSRob Clark if (IS_ERR(pages)) 680d6ae7d1cSRob Clark return ERR_CAST(pages); 681d6ae7d1cSRob Clark 6820e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 683a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6840e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6850e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 686a6ae74c9SRob Clark * hold msm_obj lock) 6870e08270aSSushmita Susheelendra */ 6880e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6890e08270aSSushmita Susheelendra 6900e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6910e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 692af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6930e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6940e08270aSSushmita Susheelendra ret = -ENOMEM; 6950e08270aSSushmita Susheelendra goto fail; 6960e08270aSSushmita Susheelendra } 6970e08270aSSushmita Susheelendra } 6980e08270aSSushmita Susheelendra 6990e08270aSSushmita Susheelendra return msm_obj->vaddr; 7000e08270aSSushmita Susheelendra 7010e08270aSSushmita Susheelendra fail: 702e1e9db2cSRob Clark msm_obj->vmap_count--; 703d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7040e08270aSSushmita Susheelendra return ERR_PTR(ret); 70518f23049SRob Clark } 70618f23049SRob Clark 707e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 708e4b87d22SRob Clark { 709e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 710e4b87d22SRob Clark } 711e4b87d22SRob Clark 712fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 713fad33f4bSRob Clark { 714e4b87d22SRob Clark void *ret; 715e4b87d22SRob Clark 716e4b87d22SRob Clark msm_gem_lock(obj); 717e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 718e4b87d22SRob Clark msm_gem_unlock(obj); 719e4b87d22SRob Clark 720e4b87d22SRob Clark return ret; 721fad33f4bSRob Clark } 722fad33f4bSRob Clark 723fad33f4bSRob Clark /* 724fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 725fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 726fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 727fad33f4bSRob Clark * active list. 728fad33f4bSRob Clark */ 729fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 730fad33f4bSRob Clark { 731fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 732fad33f4bSRob Clark } 733fad33f4bSRob Clark 734e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 73518f23049SRob Clark { 7360e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7370e08270aSSushmita Susheelendra 738d4d7d363SRob Clark msm_gem_assert_locked(obj); 73990643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 740e4b87d22SRob Clark 7410e08270aSSushmita Susheelendra msm_obj->vmap_count--; 742d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7434cd33c48SRob Clark } 7440e08270aSSushmita Susheelendra 7450e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7464cd33c48SRob Clark { 747a6ae74c9SRob Clark msm_gem_lock(obj); 748e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 749a6ae74c9SRob Clark msm_gem_unlock(obj); 7504cd33c48SRob Clark } 7514cd33c48SRob Clark 7524cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7534cd33c48SRob Clark * false or -errno. 7544cd33c48SRob Clark */ 7554cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7564cd33c48SRob Clark { 757*6c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 7584cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7594cd33c48SRob Clark 760a6ae74c9SRob Clark msm_gem_lock(obj); 7614cd33c48SRob Clark 762*6c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 763*6c7c8fb8SRob Clark 7644cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 7654cd33c48SRob Clark msm_obj->madv = madv; 7664cd33c48SRob Clark 7670e08270aSSushmita Susheelendra madv = msm_obj->madv; 7680e08270aSSushmita Susheelendra 7693edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7703edfa30fSRob Clark * between inactive lists 7713edfa30fSRob Clark */ 772*6c7c8fb8SRob Clark update_lru_locked(obj); 773*6c7c8fb8SRob Clark 774*6c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 7753edfa30fSRob Clark 776a6ae74c9SRob Clark msm_gem_unlock(obj); 7770e08270aSSushmita Susheelendra 7780e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 7794cd33c48SRob Clark } 7804cd33c48SRob Clark 781599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 78268209390SRob Clark { 78368209390SRob Clark struct drm_device *dev = obj->dev; 784*6c7c8fb8SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 78568209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 78668209390SRob Clark 787d4d7d363SRob Clark msm_gem_assert_locked(obj); 78890643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 78968209390SRob Clark 79020d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 79120d0ae2fSRob Clark put_iova_spaces(obj, true); 7920e08270aSSushmita Susheelendra 793599089c6SRob Clark msm_gem_vunmap(obj); 79468209390SRob Clark 79581d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 79681d4d597SRob Clark 79768209390SRob Clark put_pages(obj); 79868209390SRob Clark 7999b73bde3SIskren Chernev put_iova_vmas(obj); 8009b73bde3SIskren Chernev 801*6c7c8fb8SRob Clark mutex_lock(&priv->lru.lock); 802*6c7c8fb8SRob Clark /* A one-way transition: */ 80368209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 804*6c7c8fb8SRob Clark mutex_unlock(&priv->lru.lock); 80568209390SRob Clark 80668209390SRob Clark drm_gem_free_mmap_offset(obj); 80768209390SRob Clark 80868209390SRob Clark /* Our goal here is to return as much of the memory as 80968209390SRob Clark * is possible back to the system as we are called from OOM. 81068209390SRob Clark * To do this we must instruct the shmfs to drop all of its 81168209390SRob Clark * backing pages, *now*. 81268209390SRob Clark */ 81368209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 81468209390SRob Clark 81568209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 81668209390SRob Clark 0, (loff_t)-1); 81768209390SRob Clark } 81868209390SRob Clark 81937c68900SLee Jones /* 82063f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 82163f17ef8SRob Clark */ 82263f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 82363f17ef8SRob Clark { 82463f17ef8SRob Clark struct drm_device *dev = obj->dev; 82563f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 82663f17ef8SRob Clark 827d4d7d363SRob Clark msm_gem_assert_locked(obj); 82863f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 82963f17ef8SRob Clark 83063f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 83163f17ef8SRob Clark put_iova_spaces(obj, false); 83263f17ef8SRob Clark 83363f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 83463f17ef8SRob Clark 83563f17ef8SRob Clark put_pages(obj); 83663f17ef8SRob Clark } 83763f17ef8SRob Clark 838599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 839e1e9db2cSRob Clark { 840e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 841e1e9db2cSRob Clark 842d4d7d363SRob Clark msm_gem_assert_locked(obj); 8430e08270aSSushmita Susheelendra 84490643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 845e1e9db2cSRob Clark return; 846e1e9db2cSRob Clark 847e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 848e1e9db2cSRob Clark msm_obj->vaddr = NULL; 849e1e9db2cSRob Clark } 850e1e9db2cSRob Clark 85101780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 85201780d02SRob Clark { 853d4d7d363SRob Clark msm_gem_assert_locked(obj); 85401780d02SRob Clark 85501780d02SRob Clark if (to_msm_bo(obj)->pin_count) 85601780d02SRob Clark return true; 85701780d02SRob Clark 85801780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 85901780d02SRob Clark } 86001780d02SRob Clark 861ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 862ba00c3f2SRob Clark { 863b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 864f755e227SChris Wilson unsigned long remain = 865f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 866f755e227SChris Wilson long ret; 867b6295f9aSRob Clark 8687bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 8697bc80a54SChristian König true, remain); 870f755e227SChris Wilson if (ret == 0) 871f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 872f755e227SChris Wilson else if (ret < 0) 873f755e227SChris Wilson return ret; 874ba00c3f2SRob Clark 8757198e6b0SRob Clark /* TODO cache maintenance */ 8767198e6b0SRob Clark 877b6295f9aSRob Clark return 0; 8787198e6b0SRob Clark } 8797198e6b0SRob Clark 8807198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8817198e6b0SRob Clark { 8827198e6b0SRob Clark /* TODO cache maintenance */ 883c8afe684SRob Clark return 0; 884c8afe684SRob Clark } 885c8afe684SRob Clark 886c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 887528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 888528107c8SRob Clark struct msm_gem_stats *stats) 889c8afe684SRob Clark { 890c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 89152791eeeSChristian König struct dma_resv *robj = obj->resv; 8924b85f7f5SRob Clark struct msm_gem_vma *vma; 893c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8944cd33c48SRob Clark const char *madv; 895c8afe684SRob Clark 896a6ae74c9SRob Clark msm_gem_lock(obj); 897b6295f9aSRob Clark 898528107c8SRob Clark stats->all.count++; 899528107c8SRob Clark stats->all.size += obj->size; 900528107c8SRob Clark 901da53d8b5SRob Clark if (msm_gem_active(obj)) { 902528107c8SRob Clark stats->active.count++; 903528107c8SRob Clark stats->active.size += obj->size; 904528107c8SRob Clark } 905528107c8SRob Clark 906f48f3563SRob Clark if (msm_obj->pages) { 907f48f3563SRob Clark stats->resident.count++; 908f48f3563SRob Clark stats->resident.size += obj->size; 909f48f3563SRob Clark } 910f48f3563SRob Clark 9114cd33c48SRob Clark switch (msm_obj->madv) { 9124cd33c48SRob Clark case __MSM_MADV_PURGED: 913528107c8SRob Clark stats->purged.count++; 914528107c8SRob Clark stats->purged.size += obj->size; 9154cd33c48SRob Clark madv = " purged"; 9164cd33c48SRob Clark break; 9174cd33c48SRob Clark case MSM_MADV_DONTNEED: 9180054eeb7SRob Clark stats->purgeable.count++; 9190054eeb7SRob Clark stats->purgeable.size += obj->size; 9204cd33c48SRob Clark madv = " purgeable"; 9214cd33c48SRob Clark break; 9224cd33c48SRob Clark case MSM_MADV_WILLNEED: 9234cd33c48SRob Clark default: 9244cd33c48SRob Clark madv = ""; 9254cd33c48SRob Clark break; 9264cd33c48SRob Clark } 9274cd33c48SRob Clark 928575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 929da53d8b5SRob Clark msm_obj->flags, msm_gem_active(obj) ? 'A' : 'I', 9302c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 931667ce33eSRob Clark off, msm_obj->vaddr); 932667ce33eSRob Clark 9330815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 934667ce33eSRob Clark 935575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 936575f0485SJordan Crouse 937575f0485SJordan Crouse seq_puts(m, " vmas:"); 938575f0485SJordan Crouse 93925faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 94025faf2f2SRob Clark const char *name, *comm; 94125faf2f2SRob Clark if (vma->aspace) { 94225faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 94325faf2f2SRob Clark struct task_struct *task = 94425faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 94525faf2f2SRob Clark if (task) { 94625faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 947ac3e4f42SRob Clark put_task_struct(task); 94825faf2f2SRob Clark } else { 94925faf2f2SRob Clark comm = NULL; 95025faf2f2SRob Clark } 95125faf2f2SRob Clark name = aspace->name; 95225faf2f2SRob Clark } else { 95325faf2f2SRob Clark name = comm = NULL; 95425faf2f2SRob Clark } 95525faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 95625faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 95725faf2f2SRob Clark vma->aspace, vma->iova, 95825faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 959ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 96025faf2f2SRob Clark kfree(comm); 96125faf2f2SRob Clark } 962575f0485SJordan Crouse 963575f0485SJordan Crouse seq_puts(m, "\n"); 964575f0485SJordan Crouse } 965b6295f9aSRob Clark 966f19ee2f3SChristian König dma_resv_describe(robj, m); 967a6ae74c9SRob Clark msm_gem_unlock(obj); 968c8afe684SRob Clark } 969c8afe684SRob Clark 970c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 971c8afe684SRob Clark { 972528107c8SRob Clark struct msm_gem_stats stats = {}; 973c8afe684SRob Clark struct msm_gem_object *msm_obj; 974c8afe684SRob Clark 9750815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9766ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 977c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 978575f0485SJordan Crouse seq_puts(m, " "); 979528107c8SRob Clark msm_gem_describe(obj, m, &stats); 980c8afe684SRob Clark } 981c8afe684SRob Clark 982528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 983528107c8SRob Clark stats.all.count, stats.all.size); 984528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 985528107c8SRob Clark stats.active.count, stats.active.size); 986f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 987f48f3563SRob Clark stats.resident.count, stats.resident.size); 988f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9890054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 990528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 991528107c8SRob Clark stats.purged.count, stats.purged.size); 992c8afe684SRob Clark } 993c8afe684SRob Clark #endif 994c8afe684SRob Clark 995030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 9966867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 997c8afe684SRob Clark { 998c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99948e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 100048e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 100148e7f183SKristian H. Kristensen 10026ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10036ed0897cSRob Clark list_del(&msm_obj->node); 10046ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10056ed0897cSRob Clark 100620d0ae2fSRob Clark put_iova_spaces(obj, true); 1007c8afe684SRob Clark 100805b84911SRob Clark if (obj->import_attach) { 100990643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 101005b84911SRob Clark 101105b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 101205b84911SRob Clark * ours, just free the array we allocated: 101305b84911SRob Clark */ 10142098105eSMichal Hocko kvfree(msm_obj->pages); 101505b84911SRob Clark 101657f04815SRob Clark put_iova_vmas(obj); 101757f04815SRob Clark 1018f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 101905b84911SRob Clark } else { 1020599089c6SRob Clark msm_gem_vunmap(obj); 1021c8afe684SRob Clark put_pages(obj); 102257f04815SRob Clark put_iova_vmas(obj); 102305b84911SRob Clark } 1024c8afe684SRob Clark 1025c8afe684SRob Clark drm_gem_object_release(obj); 1026c8afe684SRob Clark 1027c8afe684SRob Clark kfree(msm_obj); 1028c8afe684SRob Clark } 1029c8afe684SRob Clark 1030510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1031510410bfSThomas Zimmermann { 1032510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1033510410bfSThomas Zimmermann 10341c71222eSSuren Baghdasaryan vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP); 1035510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1036510410bfSThomas Zimmermann 1037510410bfSThomas Zimmermann return 0; 1038510410bfSThomas Zimmermann } 1039510410bfSThomas Zimmermann 1040c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1041c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10420815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10430815d774SJordan Crouse char *name) 1044c8afe684SRob Clark { 1045c8afe684SRob Clark struct drm_gem_object *obj; 1046c8afe684SRob Clark int ret; 1047c8afe684SRob Clark 1048c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1049c8afe684SRob Clark 1050c8afe684SRob Clark if (IS_ERR(obj)) 1051c8afe684SRob Clark return PTR_ERR(obj); 1052c8afe684SRob Clark 10530815d774SJordan Crouse if (name) 10540815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10550815d774SJordan Crouse 1056c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1057c8afe684SRob Clark 1058c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1059f7d33950SEmil Velikov drm_gem_object_put(obj); 1060c8afe684SRob Clark 1061c8afe684SRob Clark return ret; 1062c8afe684SRob Clark } 1063c8afe684SRob Clark 10643c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10653c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10663c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10673c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10683c9edd9cSThomas Zimmermann }; 10693c9edd9cSThomas Zimmermann 10703c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10713c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10723c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10733c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10743c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10753c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10763c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1077510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 10783c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10793c9edd9cSThomas Zimmermann }; 10803c9edd9cSThomas Zimmermann 108105b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 108205b84911SRob Clark uint32_t size, uint32_t flags, 10833cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1084c8afe684SRob Clark { 1085d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1086c8afe684SRob Clark struct msm_gem_object *msm_obj; 1087c8afe684SRob Clark 1088c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1089c8afe684SRob Clark case MSM_BO_CACHED: 1090c8afe684SRob Clark case MSM_BO_WC: 1091c8afe684SRob Clark break; 1092d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1093d12e3390SJonathan Marek if (priv->has_cached_coherent) 1094d12e3390SJonathan Marek break; 1095e181ad43SGustavo A. R. Silva fallthrough; 1096c8afe684SRob Clark default: 10972d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1098c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 109905b84911SRob Clark return -EINVAL; 1100c8afe684SRob Clark } 1101c8afe684SRob Clark 1102667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 110305b84911SRob Clark if (!msm_obj) 110405b84911SRob Clark return -ENOMEM; 1105c8afe684SRob Clark 1106c8afe684SRob Clark msm_obj->flags = flags; 11074cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1108c8afe684SRob Clark 1109027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11104b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11114b85f7f5SRob Clark 111205b84911SRob Clark *obj = &msm_obj->base; 11133c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 111405b84911SRob Clark 111505b84911SRob Clark return 0; 111605b84911SRob Clark } 111705b84911SRob Clark 1118030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 111905b84911SRob Clark { 1120f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11213cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1122871d812aSRob Clark struct drm_gem_object *obj = NULL; 1123f4839bd5SRob Clark bool use_vram = false; 112405b84911SRob Clark int ret; 112505b84911SRob Clark 112605b84911SRob Clark size = PAGE_ALIGN(size); 112705b84911SRob Clark 1128c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1129f4839bd5SRob Clark use_vram = true; 113086f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1131f4839bd5SRob Clark use_vram = true; 1132f4839bd5SRob Clark 113390643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1134f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1135f4839bd5SRob Clark 11361a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11371a5dff5dSJordan Crouse * infrastructure grumpy 11381a5dff5dSJordan Crouse */ 11391a5dff5dSJordan Crouse if (size == 0) 11401a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11411a5dff5dSJordan Crouse 11423cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 114305b84911SRob Clark if (ret) 11442203bd0eSDan Carpenter return ERR_PTR(ret); 114505b84911SRob Clark 11463cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11473cbdc8d8SAkhil P Oommen 1148f4839bd5SRob Clark if (use_vram) { 11494b85f7f5SRob Clark struct msm_gem_vma *vma; 1150f4839bd5SRob Clark struct page **pages; 1151b3949a9aSHans Verkuil 1152a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1153a694ffedSIskren Chernev 1154a6ae74c9SRob Clark msm_gem_lock(obj); 1155f4839bd5SRob Clark 11564b85f7f5SRob Clark vma = add_vma(obj, NULL); 1157a6ae74c9SRob Clark msm_gem_unlock(obj); 11584b85f7f5SRob Clark if (IS_ERR(vma)) { 11594b85f7f5SRob Clark ret = PTR_ERR(vma); 11604b85f7f5SRob Clark goto fail; 11614b85f7f5SRob Clark } 11624b85f7f5SRob Clark 11634b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11644b85f7f5SRob Clark 116507fcad0dSIskren Chernev msm_gem_lock(obj); 1166f4839bd5SRob Clark pages = get_pages(obj); 116707fcad0dSIskren Chernev msm_gem_unlock(obj); 1168f4839bd5SRob Clark if (IS_ERR(pages)) { 1169f4839bd5SRob Clark ret = PTR_ERR(pages); 1170f4839bd5SRob Clark goto fail; 1171f4839bd5SRob Clark } 11724b85f7f5SRob Clark 11734b85f7f5SRob Clark vma->iova = physaddr(obj); 1174f4839bd5SRob Clark } else { 117505b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 117605b84911SRob Clark if (ret) 117705b84911SRob Clark goto fail; 11780abdba47SLucas Stach /* 11790abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11800abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11810abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11820abdba47SLucas Stach * expected if you're going to pin these pages. 11830abdba47SLucas Stach */ 11840abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1185871d812aSRob Clark } 118605b84911SRob Clark 1187b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.unbacked, obj); 11883cbdc8d8SAkhil P Oommen 11896ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11906ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11916ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11926ed0897cSRob Clark 119305b84911SRob Clark return obj; 119405b84911SRob Clark 119505b84911SRob Clark fail: 1196f7d33950SEmil Velikov drm_gem_object_put(obj); 119705b84911SRob Clark return ERR_PTR(ret); 119805b84911SRob Clark } 119905b84911SRob Clark 120005b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 120179f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 120205b84911SRob Clark { 12033cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 120405b84911SRob Clark struct msm_gem_object *msm_obj; 120505b84911SRob Clark struct drm_gem_object *obj; 120679f0e202SRob Clark uint32_t size; 120705b84911SRob Clark int ret, npages; 120805b84911SRob Clark 1209871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1210c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12116a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1212871d812aSRob Clark return ERR_PTR(-EINVAL); 1213871d812aSRob Clark } 1214871d812aSRob Clark 121579f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 121605b84911SRob Clark 12173cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 121805b84911SRob Clark if (ret) 12192203bd0eSDan Carpenter return ERR_PTR(ret); 122005b84911SRob Clark 122105b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 122205b84911SRob Clark 122305b84911SRob Clark npages = size / PAGE_SIZE; 122405b84911SRob Clark 122505b84911SRob Clark msm_obj = to_msm_bo(obj); 1226a6ae74c9SRob Clark msm_gem_lock(obj); 122705b84911SRob Clark msm_obj->sgt = sgt; 12282098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 122905b84911SRob Clark if (!msm_obj->pages) { 1230a6ae74c9SRob Clark msm_gem_unlock(obj); 123105b84911SRob Clark ret = -ENOMEM; 123205b84911SRob Clark goto fail; 123305b84911SRob Clark } 123405b84911SRob Clark 1235c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12360e08270aSSushmita Susheelendra if (ret) { 1237a6ae74c9SRob Clark msm_gem_unlock(obj); 123805b84911SRob Clark goto fail; 12390e08270aSSushmita Susheelendra } 124005b84911SRob Clark 1241a6ae74c9SRob Clark msm_gem_unlock(obj); 12423cbdc8d8SAkhil P Oommen 1243b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.pinned, obj); 12443cbdc8d8SAkhil P Oommen 12456ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12466ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12476ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12486ed0897cSRob Clark 1249c8afe684SRob Clark return obj; 1250c8afe684SRob Clark 1251c8afe684SRob Clark fail: 1252f7d33950SEmil Velikov drm_gem_object_put(obj); 1253c8afe684SRob Clark return ERR_PTR(ret); 1254c8afe684SRob Clark } 12558223286dSJordan Crouse 1256030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12578223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1258030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12598223286dSJordan Crouse { 12608223286dSJordan Crouse void *vaddr; 1261030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12628223286dSJordan Crouse int ret; 12638223286dSJordan Crouse 12648223286dSJordan Crouse if (IS_ERR(obj)) 12658223286dSJordan Crouse return ERR_CAST(obj); 12668223286dSJordan Crouse 12678223286dSJordan Crouse if (iova) { 12689fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 126993f7abf1SJordan Crouse if (ret) 127093f7abf1SJordan Crouse goto err; 12718223286dSJordan Crouse } 12728223286dSJordan Crouse 12738223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1274c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12757ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 127693f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 127793f7abf1SJordan Crouse goto err; 12788223286dSJordan Crouse } 12798223286dSJordan Crouse 12808223286dSJordan Crouse if (bo) 12818223286dSJordan Crouse *bo = obj; 12828223286dSJordan Crouse 12838223286dSJordan Crouse return vaddr; 128493f7abf1SJordan Crouse err: 1285f7d33950SEmil Velikov drm_gem_object_put(obj); 128693f7abf1SJordan Crouse 128793f7abf1SJordan Crouse return ERR_PTR(ret); 128893f7abf1SJordan Crouse 12898223286dSJordan Crouse } 12908223286dSJordan Crouse 12911e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1292030af2b0SRob Clark struct msm_gem_address_space *aspace) 12931e29dff0SJordan Crouse { 12941e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 12951e29dff0SJordan Crouse return; 12961e29dff0SJordan Crouse 12971e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 12987ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1299f7d33950SEmil Velikov drm_gem_object_put(bo); 13001e29dff0SJordan Crouse } 13010815d774SJordan Crouse 13020815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13030815d774SJordan Crouse { 13040815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13050815d774SJordan Crouse va_list ap; 13060815d774SJordan Crouse 13070815d774SJordan Crouse if (!fmt) 13080815d774SJordan Crouse return; 13090815d774SJordan Crouse 13100815d774SJordan Crouse va_start(ap, fmt); 13110815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13120815d774SJordan Crouse va_end(ap); 13130815d774SJordan Crouse } 1314