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*4a02a376SRob Clark static void update_lru(struct drm_gem_object *obj) 65*4a02a376SRob Clark { 66*4a02a376SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 67*4a02a376SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 68*4a02a376SRob Clark 69*4a02a376SRob Clark msm_gem_assert_locked(&msm_obj->base); 70*4a02a376SRob Clark 71*4a02a376SRob Clark if (!msm_obj->pages) { 72*4a02a376SRob Clark GEM_WARN_ON(msm_obj->pin_count); 73*4a02a376SRob Clark 74*4a02a376SRob Clark drm_gem_lru_move_tail(&priv->lru.unbacked, obj); 75*4a02a376SRob Clark } else if (msm_obj->pin_count) { 76*4a02a376SRob Clark drm_gem_lru_move_tail(&priv->lru.pinned, obj); 77*4a02a376SRob Clark } else if (msm_obj->madv == MSM_MADV_WILLNEED) { 78*4a02a376SRob Clark drm_gem_lru_move_tail(&priv->lru.willneed, obj); 79*4a02a376SRob Clark } else { 80*4a02a376SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_DONTNEED); 81*4a02a376SRob Clark 82*4a02a376SRob Clark drm_gem_lru_move_tail(&priv->lru.dontneed, obj); 83*4a02a376SRob Clark } 84*4a02a376SRob Clark } 85*4a02a376SRob Clark 86871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 870e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 88871d812aSRob Clark { 89871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 90871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 91871d812aSRob Clark dma_addr_t paddr; 92871d812aSRob Clark struct page **p; 93871d812aSRob Clark int ret, i; 94871d812aSRob Clark 952098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 96871d812aSRob Clark if (!p) 97871d812aSRob Clark return ERR_PTR(-ENOMEM); 98871d812aSRob Clark 990e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1004e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 1010e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 102871d812aSRob Clark if (ret) { 1032098105eSMichal Hocko kvfree(p); 104871d812aSRob Clark return ERR_PTR(ret); 105871d812aSRob Clark } 106871d812aSRob Clark 107871d812aSRob Clark paddr = physaddr(obj); 108871d812aSRob Clark for (i = 0; i < npages; i++) { 109b3ed524fSChristian König p[i] = pfn_to_page(__phys_to_pfn(paddr)); 110871d812aSRob Clark paddr += PAGE_SIZE; 111871d812aSRob Clark } 112871d812aSRob Clark 113871d812aSRob Clark return p; 114871d812aSRob Clark } 115c8afe684SRob Clark 116c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 117c8afe684SRob Clark { 118c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 119c8afe684SRob Clark 120d4d7d363SRob Clark msm_gem_assert_locked(obj); 12107fcad0dSIskren Chernev 122c8afe684SRob Clark if (!msm_obj->pages) { 123c8afe684SRob Clark struct drm_device *dev = obj->dev; 124871d812aSRob Clark struct page **p; 125c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 126c8afe684SRob Clark 127072f1f91SRob Clark if (use_pages(obj)) 1280cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 129871d812aSRob Clark else 130871d812aSRob Clark p = get_pages_vram(obj, npages); 131871d812aSRob Clark 132c8afe684SRob Clark if (IS_ERR(p)) { 1336a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 134c8afe684SRob Clark PTR_ERR(p)); 135c8afe684SRob Clark return p; 136c8afe684SRob Clark } 137c8afe684SRob Clark 13862e3a3e3SPrakash Kamliya msm_obj->pages = p; 13962e3a3e3SPrakash Kamliya 140707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1411f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 14262e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 143c8afe684SRob Clark 1446a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 14562e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 14662e3a3e3SPrakash Kamliya return ptr; 14762e3a3e3SPrakash Kamliya } 148c8afe684SRob Clark 149c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 150c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 151c8afe684SRob Clark */ 1528b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 1533de433c5SRob Clark sync_for_device(msm_obj); 15464fcbde7SRob Clark 155901df24dSRob Clark update_lru(obj); 156c8afe684SRob Clark } 157c8afe684SRob Clark 158c8afe684SRob Clark return msm_obj->pages; 159c8afe684SRob Clark } 160c8afe684SRob Clark 1610e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1620e08270aSSushmita Susheelendra { 1630e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1640e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1650e08270aSSushmita Susheelendra 1660e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1670e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1680e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1690e08270aSSushmita Susheelendra 1700e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1710e08270aSSushmita Susheelendra } 1720e08270aSSushmita Susheelendra 173c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 174c8afe684SRob Clark { 175c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 176c8afe684SRob Clark 177c8afe684SRob Clark if (msm_obj->pages) { 1783976626eSBen Hutchings if (msm_obj->sgt) { 1793976626eSBen Hutchings /* For non-cached buffers, ensure the new 1803976626eSBen Hutchings * pages are clean because display controller, 1813976626eSBen Hutchings * GPU, etc. are not coherent: 182c8afe684SRob Clark */ 1838b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 1843de433c5SRob Clark sync_for_cpu(msm_obj); 18562e3a3e3SPrakash Kamliya 186c8afe684SRob Clark sg_free_table(msm_obj->sgt); 187c8afe684SRob Clark kfree(msm_obj->sgt); 188b9a31d0dSRob Clark msm_obj->sgt = NULL; 1893976626eSBen Hutchings } 190c8afe684SRob Clark 191072f1f91SRob Clark if (use_pages(obj)) 192c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1930e08270aSSushmita Susheelendra else 1940e08270aSSushmita Susheelendra put_pages_vram(obj); 195871d812aSRob Clark 196c8afe684SRob Clark msm_obj->pages = NULL; 197b352ba54SRob Clark update_lru(obj); 198c8afe684SRob Clark } 199c8afe684SRob Clark } 200c8afe684SRob Clark 201e7cd5ee9SRob Clark static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj) 20205b84911SRob Clark { 2030e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 20405b84911SRob Clark struct page **p; 2050e08270aSSushmita Susheelendra 206d4d7d363SRob Clark msm_gem_assert_locked(obj); 2070e08270aSSushmita Susheelendra 20890643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 2090e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 2100e08270aSSushmita Susheelendra } 2110e08270aSSushmita Susheelendra 21205b84911SRob Clark p = get_pages(obj); 21310f76165SRob Clark if (!IS_ERR(p)) { 2149fd5ff7fSRob Clark to_msm_bo(obj)->pin_count++; 215901df24dSRob Clark update_lru(obj); 21610f76165SRob Clark } 21710f76165SRob Clark 21805b84911SRob Clark return p; 21905b84911SRob Clark } 22005b84911SRob Clark 221e7cd5ee9SRob Clark struct page **msm_gem_pin_pages(struct drm_gem_object *obj) 222e7cd5ee9SRob Clark { 223e7cd5ee9SRob Clark struct page **p; 224e7cd5ee9SRob Clark 225e7cd5ee9SRob Clark msm_gem_lock(obj); 226e7cd5ee9SRob Clark p = msm_gem_pin_pages_locked(obj); 227e7cd5ee9SRob Clark msm_gem_unlock(obj); 228e7cd5ee9SRob Clark 229e7cd5ee9SRob Clark return p; 230e7cd5ee9SRob Clark } 231e7cd5ee9SRob Clark 232e7cd5ee9SRob Clark void msm_gem_unpin_pages(struct drm_gem_object *obj) 23305b84911SRob Clark { 23410f76165SRob Clark msm_gem_lock(obj); 2359fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 23610f76165SRob Clark msm_gem_unlock(obj); 23705b84911SRob Clark } 23805b84911SRob Clark 239af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 240af9b3547SJonathan Marek { 2418b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 242af9b3547SJonathan Marek return pgprot_writecombine(prot); 243af9b3547SJonathan Marek return prot; 244af9b3547SJonathan Marek } 245af9b3547SJonathan Marek 2463c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 247c8afe684SRob Clark { 24811bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 249c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2500e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 251c8afe684SRob Clark struct page **pages; 252c8afe684SRob Clark unsigned long pfn; 253c8afe684SRob Clark pgoff_t pgoff; 254a5f74ec7SSouptick Joarder int err; 255a5f74ec7SSouptick Joarder vm_fault_t ret; 256c8afe684SRob Clark 2570e08270aSSushmita Susheelendra /* 2580e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2590e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 260d78d383aSRob Clark */ 261a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 262a5f74ec7SSouptick Joarder if (err) { 263a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 264c8afe684SRob Clark goto out; 265a5f74ec7SSouptick Joarder } 266c8afe684SRob Clark 26790643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 268a6ae74c9SRob Clark msm_gem_unlock(obj); 2690e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2700e08270aSSushmita Susheelendra } 2710e08270aSSushmita Susheelendra 272c8afe684SRob Clark /* make sure we have pages attached now */ 273c8afe684SRob Clark pages = get_pages(obj); 274c8afe684SRob Clark if (IS_ERR(pages)) { 275a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 276c8afe684SRob Clark goto out_unlock; 277c8afe684SRob Clark } 278c8afe684SRob Clark 279c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2801a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 281c8afe684SRob Clark 282871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 283c8afe684SRob Clark 2841a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 285c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 286c8afe684SRob Clark 2878246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 2888246913aSRob Clark 289c8afe684SRob Clark out_unlock: 290a6ae74c9SRob Clark msm_gem_unlock(obj); 291c8afe684SRob Clark out: 292a5f74ec7SSouptick Joarder return ret; 293c8afe684SRob Clark } 294c8afe684SRob Clark 295c8afe684SRob Clark /** get mmap offset */ 296c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 297c8afe684SRob Clark { 298c8afe684SRob Clark struct drm_device *dev = obj->dev; 299c8afe684SRob Clark int ret; 300c8afe684SRob Clark 301d4d7d363SRob Clark msm_gem_assert_locked(obj); 302c8afe684SRob Clark 303c8afe684SRob Clark /* Make it mmapable */ 304c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 305c8afe684SRob Clark 306c8afe684SRob Clark if (ret) { 3076a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 308c8afe684SRob Clark return 0; 309c8afe684SRob Clark } 310c8afe684SRob Clark 311c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 312c8afe684SRob Clark } 313c8afe684SRob Clark 314c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 315c8afe684SRob Clark { 316c8afe684SRob Clark uint64_t offset; 3170e08270aSSushmita Susheelendra 318a6ae74c9SRob Clark msm_gem_lock(obj); 319c8afe684SRob Clark offset = mmap_offset(obj); 320a6ae74c9SRob Clark msm_gem_unlock(obj); 321c8afe684SRob Clark return offset; 322c8afe684SRob Clark } 323c8afe684SRob Clark 3244b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3254b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3264b85f7f5SRob Clark { 3274b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3284b85f7f5SRob Clark struct msm_gem_vma *vma; 3294b85f7f5SRob Clark 330d4d7d363SRob Clark msm_gem_assert_locked(obj); 3310e08270aSSushmita Susheelendra 332fc2f0756SRob Clark vma = msm_gem_vma_new(aspace); 3334b85f7f5SRob Clark if (!vma) 3344b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3354b85f7f5SRob Clark 3364b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3374b85f7f5SRob Clark 3384b85f7f5SRob Clark return vma; 3394b85f7f5SRob Clark } 3404b85f7f5SRob Clark 3414b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3424b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3434b85f7f5SRob Clark { 3444b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3454b85f7f5SRob Clark struct msm_gem_vma *vma; 3464b85f7f5SRob Clark 347d4d7d363SRob Clark msm_gem_assert_locked(obj); 3484b85f7f5SRob Clark 3494b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3504b85f7f5SRob Clark if (vma->aspace == aspace) 3514b85f7f5SRob Clark return vma; 3524b85f7f5SRob Clark } 3534b85f7f5SRob Clark 3544b85f7f5SRob Clark return NULL; 3554b85f7f5SRob Clark } 3564b85f7f5SRob Clark 3574b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3584b85f7f5SRob Clark { 3594b85f7f5SRob Clark if (!vma) 3604b85f7f5SRob Clark return; 3614b85f7f5SRob Clark 3624b85f7f5SRob Clark list_del(&vma->list); 3634b85f7f5SRob Clark kfree(vma); 3644b85f7f5SRob Clark } 3654b85f7f5SRob Clark 36637c68900SLee Jones /* 36720d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 36820d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 36920d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 37020d0ae2fSRob Clark * mapping. 37120d0ae2fSRob Clark */ 3724fe5f65eSRob Clark static void 37320d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3744fe5f65eSRob Clark { 3754fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3769b73bde3SIskren Chernev struct msm_gem_vma *vma; 3774fe5f65eSRob Clark 378d4d7d363SRob Clark msm_gem_assert_locked(obj); 3794fe5f65eSRob Clark 3809b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 381d67f1b6dSBrian Masney if (vma->aspace) { 382fc2f0756SRob Clark msm_gem_vma_purge(vma); 38320d0ae2fSRob Clark if (close) 384fc2f0756SRob Clark msm_gem_vma_close(vma); 385d67f1b6dSBrian Masney } 3869b73bde3SIskren Chernev } 3879b73bde3SIskren Chernev } 3889b73bde3SIskren Chernev 3899b73bde3SIskren Chernev /* Called with msm_obj locked */ 3909b73bde3SIskren Chernev static void 3919b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3924fe5f65eSRob Clark { 3934fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3944fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3954fe5f65eSRob Clark 396d4d7d363SRob Clark msm_gem_assert_locked(obj); 3974fe5f65eSRob Clark 3984b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3994b85f7f5SRob Clark del_vma(vma); 4004fe5f65eSRob Clark } 4014fe5f65eSRob Clark } 4024fe5f65eSRob Clark 403522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 404522f1abfSRob Clark struct msm_gem_address_space *aspace, 405d3b8877eSJonathan Marek u64 range_start, u64 range_end) 406c8afe684SRob Clark { 4074b85f7f5SRob Clark struct msm_gem_vma *vma; 408c8afe684SRob Clark 409d4d7d363SRob Clark msm_gem_assert_locked(obj); 410cb1e3818SRob Clark 4114b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 412871d812aSRob Clark 4134b85f7f5SRob Clark if (!vma) { 414522f1abfSRob Clark int ret; 415522f1abfSRob Clark 4164b85f7f5SRob Clark vma = add_vma(obj, aspace); 417c0ee9794SJordan Crouse if (IS_ERR(vma)) 418522f1abfSRob Clark return vma; 4194b85f7f5SRob Clark 420fc2f0756SRob Clark ret = msm_gem_vma_init(vma, obj->size, 421d3b8877eSJonathan Marek range_start, range_end); 422c0ee9794SJordan Crouse if (ret) { 423c0ee9794SJordan Crouse del_vma(vma); 424522f1abfSRob Clark return ERR_PTR(ret); 425c8afe684SRob Clark } 426522f1abfSRob Clark } else { 427522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 428522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4294b85f7f5SRob Clark } 4304b85f7f5SRob Clark 431522f1abfSRob Clark return vma; 432c0ee9794SJordan Crouse } 4334b85f7f5SRob Clark 43427674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 435c0ee9794SJordan Crouse { 436c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 437c0ee9794SJordan Crouse struct page **pages; 43864fcbde7SRob Clark int ret, prot = IOMMU_READ; 439bbc2cd07SRob Clark 440bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 441bbc2cd07SRob Clark prot |= IOMMU_WRITE; 442c0ee9794SJordan Crouse 4430b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4440b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4450b462d7aSJonathan Marek 446d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 447d12e3390SJonathan Marek prot |= IOMMU_CACHE; 448d12e3390SJonathan Marek 449d4d7d363SRob Clark msm_gem_assert_locked(obj); 450c0ee9794SJordan Crouse 45190643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 452c0ee9794SJordan Crouse return -EBUSY; 453c0ee9794SJordan Crouse 4549fd5ff7fSRob Clark pages = msm_gem_pin_pages_locked(obj); 455c0ee9794SJordan Crouse if (IS_ERR(pages)) 456c0ee9794SJordan Crouse return PTR_ERR(pages); 457c0ee9794SJordan Crouse 458fc2f0756SRob Clark ret = msm_gem_vma_map(vma, prot, msm_obj->sgt, obj->size); 4599fd5ff7fSRob Clark if (ret) 4609fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 46164fcbde7SRob Clark 46264fcbde7SRob Clark return ret; 463c0ee9794SJordan Crouse } 464c0ee9794SJordan Crouse 465311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 46627674c66SRob Clark { 46727674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 46827674c66SRob Clark 469d4d7d363SRob Clark msm_gem_assert_locked(obj); 47027674c66SRob Clark 47127674c66SRob Clark msm_obj->pin_count--; 47227674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 47327674c66SRob Clark 474901df24dSRob Clark update_lru(obj); 47527674c66SRob Clark } 47627674c66SRob Clark 47727674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 47827674c66SRob Clark struct msm_gem_address_space *aspace) 47927674c66SRob Clark { 48027674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 48127674c66SRob Clark } 48227674c66SRob Clark 483e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 484d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 485d3b8877eSJonathan Marek u64 range_start, u64 range_end) 486c0ee9794SJordan Crouse { 487522f1abfSRob Clark struct msm_gem_vma *vma; 488c0ee9794SJordan Crouse int ret; 489c0ee9794SJordan Crouse 490d4d7d363SRob Clark msm_gem_assert_locked(obj); 491c0ee9794SJordan Crouse 492522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 493522f1abfSRob Clark if (IS_ERR(vma)) 494522f1abfSRob Clark return PTR_ERR(vma); 495c0ee9794SJordan Crouse 49627674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 497c0ee9794SJordan Crouse if (!ret) 498522f1abfSRob Clark *iova = vma->iova; 499c0ee9794SJordan Crouse 500c8afe684SRob Clark return ret; 501c8afe684SRob Clark } 502c8afe684SRob Clark 503e4b87d22SRob Clark /* 504e4b87d22SRob Clark * get iova and pin it. Should have a matching put 505e4b87d22SRob Clark * limits iova to specified range (in pages) 506e4b87d22SRob Clark */ 507e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 508e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 509e4b87d22SRob Clark u64 range_start, u64 range_end) 510e4b87d22SRob Clark { 511e4b87d22SRob Clark int ret; 512e4b87d22SRob Clark 513e4b87d22SRob Clark msm_gem_lock(obj); 514e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 515e4b87d22SRob Clark msm_gem_unlock(obj); 516e4b87d22SRob Clark 517e4b87d22SRob Clark return ret; 518e4b87d22SRob Clark } 519e4b87d22SRob Clark 520d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 521d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 522d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 523d3b8877eSJonathan Marek { 524d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 525d3b8877eSJonathan Marek } 526d3b8877eSJonathan Marek 5277ad0e8cfSJordan Crouse /* 5287ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5297ad0e8cfSJordan Crouse * valid for the life of the object 5307ad0e8cfSJordan Crouse */ 5319fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5329fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5339fe041f6SJordan Crouse { 534522f1abfSRob Clark struct msm_gem_vma *vma; 535522f1abfSRob Clark int ret = 0; 5369fe041f6SJordan Crouse 537a6ae74c9SRob Clark msm_gem_lock(obj); 538522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 539522f1abfSRob Clark if (IS_ERR(vma)) { 540522f1abfSRob Clark ret = PTR_ERR(vma); 541522f1abfSRob Clark } else { 542522f1abfSRob Clark *iova = vma->iova; 543522f1abfSRob Clark } 544a6ae74c9SRob Clark msm_gem_unlock(obj); 5459fe041f6SJordan Crouse 5469fe041f6SJordan Crouse return ret; 5479fe041f6SJordan Crouse } 5489fe041f6SJordan Crouse 549a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 5508bdcd949SRob Clark struct msm_gem_address_space *aspace) 5512638d90aSRob Clark { 552a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 5534b85f7f5SRob Clark 554a636a0ffSRob Clark if (!vma) 555a636a0ffSRob Clark return 0; 5564b85f7f5SRob Clark 557a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 558a636a0ffSRob Clark return -EBUSY; 559a636a0ffSRob Clark 560fc2f0756SRob Clark msm_gem_vma_purge(vma); 561fc2f0756SRob Clark msm_gem_vma_close(vma); 562a636a0ffSRob Clark del_vma(vma); 563a636a0ffSRob Clark 564a636a0ffSRob Clark return 0; 5652638d90aSRob Clark } 5662638d90aSRob Clark 5677ad0e8cfSJordan Crouse /* 568a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 569a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 570a636a0ffSRob Clark * the life of the object. 571a636a0ffSRob Clark * 572a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 573e4b87d22SRob Clark */ 574a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 575a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 576e4b87d22SRob Clark { 577a636a0ffSRob Clark int ret = 0; 578a636a0ffSRob Clark 579a636a0ffSRob Clark msm_gem_lock(obj); 580a636a0ffSRob Clark if (!iova) { 581a636a0ffSRob Clark ret = clear_iova(obj, aspace); 582a636a0ffSRob Clark } else { 583e4b87d22SRob Clark struct msm_gem_vma *vma; 584a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 585a636a0ffSRob Clark if (IS_ERR(vma)) { 586a636a0ffSRob Clark ret = PTR_ERR(vma); 587a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 588a636a0ffSRob Clark clear_iova(obj, aspace); 589a636a0ffSRob Clark ret = -EBUSY; 59064fcbde7SRob Clark } 591e4b87d22SRob Clark } 592a636a0ffSRob Clark msm_gem_unlock(obj); 593a636a0ffSRob Clark 594a636a0ffSRob Clark return ret; 595a636a0ffSRob Clark } 596e4b87d22SRob Clark 597e4b87d22SRob Clark /* 5987ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5997ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 6007ad0e8cfSJordan Crouse * to get rid of it 6017ad0e8cfSJordan Crouse */ 6027ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 6038bdcd949SRob Clark struct msm_gem_address_space *aspace) 604c8afe684SRob Clark { 60527674c66SRob Clark struct msm_gem_vma *vma; 60627674c66SRob Clark 607a6ae74c9SRob Clark msm_gem_lock(obj); 60827674c66SRob Clark vma = lookup_vma(obj, aspace); 60927674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 610fc2f0756SRob Clark msm_gem_vma_unpin(vma); 611311e03c2SRob Clark msm_gem_unpin_locked(obj); 61227674c66SRob Clark } 613a6ae74c9SRob Clark msm_gem_unlock(obj); 614c8afe684SRob Clark } 615c8afe684SRob Clark 616c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 617c8afe684SRob Clark struct drm_mode_create_dumb *args) 618c8afe684SRob Clark { 619c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 620c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 621c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 6220815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 623c8afe684SRob Clark } 624c8afe684SRob Clark 625c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 626c8afe684SRob Clark uint32_t handle, uint64_t *offset) 627c8afe684SRob Clark { 628c8afe684SRob Clark struct drm_gem_object *obj; 629c8afe684SRob Clark int ret = 0; 630c8afe684SRob Clark 631c8afe684SRob Clark /* GEM does all our handle to object mapping */ 632a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 633c8afe684SRob Clark if (obj == NULL) { 634c8afe684SRob Clark ret = -ENOENT; 635c8afe684SRob Clark goto fail; 636c8afe684SRob Clark } 637c8afe684SRob Clark 638c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 639c8afe684SRob Clark 640f7d33950SEmil Velikov drm_gem_object_put(obj); 641c8afe684SRob Clark 642c8afe684SRob Clark fail: 643c8afe684SRob Clark return ret; 644c8afe684SRob Clark } 645c8afe684SRob Clark 646fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 647c8afe684SRob Clark { 6480e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 649d6ae7d1cSRob Clark struct page **pages; 6500e08270aSSushmita Susheelendra int ret = 0; 6510e08270aSSushmita Susheelendra 652d4d7d363SRob Clark msm_gem_assert_locked(obj); 653e4b87d22SRob Clark 6548b6b7d84SDaniel Vetter if (obj->import_attach) 6558b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6568b6b7d84SDaniel Vetter 65790643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6586a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 659fad33f4bSRob Clark msm_obj->madv, madv); 6600e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 661c8afe684SRob Clark } 662c8afe684SRob Clark 663d6ae7d1cSRob Clark pages = msm_gem_pin_pages_locked(obj); 664d6ae7d1cSRob Clark if (IS_ERR(pages)) 665d6ae7d1cSRob Clark return ERR_CAST(pages); 666d6ae7d1cSRob Clark 6670e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 668a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6690e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6700e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 671a6ae74c9SRob Clark * hold msm_obj lock) 6720e08270aSSushmita Susheelendra */ 6730e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6740e08270aSSushmita Susheelendra 6750e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6760e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 677af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6780e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6790e08270aSSushmita Susheelendra ret = -ENOMEM; 6800e08270aSSushmita Susheelendra goto fail; 6810e08270aSSushmita Susheelendra } 6820e08270aSSushmita Susheelendra } 6830e08270aSSushmita Susheelendra 6840e08270aSSushmita Susheelendra return msm_obj->vaddr; 6850e08270aSSushmita Susheelendra 6860e08270aSSushmita Susheelendra fail: 687e1e9db2cSRob Clark msm_obj->vmap_count--; 688d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 6890e08270aSSushmita Susheelendra return ERR_PTR(ret); 69018f23049SRob Clark } 69118f23049SRob Clark 692e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 693e4b87d22SRob Clark { 694e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 695e4b87d22SRob Clark } 696e4b87d22SRob Clark 697fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 698fad33f4bSRob Clark { 699e4b87d22SRob Clark void *ret; 700e4b87d22SRob Clark 701e4b87d22SRob Clark msm_gem_lock(obj); 702e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 703e4b87d22SRob Clark msm_gem_unlock(obj); 704e4b87d22SRob Clark 705e4b87d22SRob Clark return ret; 706fad33f4bSRob Clark } 707fad33f4bSRob Clark 708fad33f4bSRob Clark /* 709fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 710fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 711fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 712fad33f4bSRob Clark * active list. 713fad33f4bSRob Clark */ 714fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 715fad33f4bSRob Clark { 716fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 717fad33f4bSRob Clark } 718fad33f4bSRob Clark 719e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 72018f23049SRob Clark { 7210e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7220e08270aSSushmita Susheelendra 723d4d7d363SRob Clark msm_gem_assert_locked(obj); 72490643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 725e4b87d22SRob Clark 7260e08270aSSushmita Susheelendra msm_obj->vmap_count--; 727d6ae7d1cSRob Clark msm_gem_unpin_locked(obj); 7284cd33c48SRob Clark } 7290e08270aSSushmita Susheelendra 7300e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7314cd33c48SRob Clark { 732a6ae74c9SRob Clark msm_gem_lock(obj); 733e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 734a6ae74c9SRob Clark msm_gem_unlock(obj); 7354cd33c48SRob Clark } 7364cd33c48SRob Clark 7374cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7384cd33c48SRob Clark * false or -errno. 7394cd33c48SRob Clark */ 7404cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7414cd33c48SRob Clark { 7424cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 74368209390SRob Clark 744a6ae74c9SRob Clark msm_gem_lock(obj); 745c8afe684SRob Clark 746c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 747c8afe684SRob Clark msm_obj->madv = madv; 748c8afe684SRob Clark 7490e08270aSSushmita Susheelendra madv = msm_obj->madv; 7500e08270aSSushmita Susheelendra 7513edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7523edfa30fSRob Clark * between inactive lists 7533edfa30fSRob Clark */ 754901df24dSRob Clark update_lru(obj); 7553edfa30fSRob Clark 756a6ae74c9SRob Clark msm_gem_unlock(obj); 7570e08270aSSushmita Susheelendra 7580e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 759c8afe684SRob Clark } 760c8afe684SRob Clark 761599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 76268209390SRob Clark { 76368209390SRob Clark struct drm_device *dev = obj->dev; 76468209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 76568209390SRob Clark 766d4d7d363SRob Clark msm_gem_assert_locked(obj); 76790643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 76868209390SRob Clark 76920d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 77020d0ae2fSRob Clark put_iova_spaces(obj, true); 7710e08270aSSushmita Susheelendra 772599089c6SRob Clark msm_gem_vunmap(obj); 77368209390SRob Clark 77481d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 77581d4d597SRob Clark 77668209390SRob Clark put_pages(obj); 77768209390SRob Clark 7789b73bde3SIskren Chernev put_iova_vmas(obj); 7799b73bde3SIskren Chernev 78068209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 78168209390SRob Clark 78268209390SRob Clark drm_gem_free_mmap_offset(obj); 78368209390SRob Clark 78468209390SRob Clark /* Our goal here is to return as much of the memory as 78568209390SRob Clark * is possible back to the system as we are called from OOM. 78668209390SRob Clark * To do this we must instruct the shmfs to drop all of its 78768209390SRob Clark * backing pages, *now*. 78868209390SRob Clark */ 78968209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 79068209390SRob Clark 79168209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 79268209390SRob Clark 0, (loff_t)-1); 79368209390SRob Clark } 79468209390SRob Clark 79537c68900SLee Jones /* 79663f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 79763f17ef8SRob Clark */ 79863f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 79963f17ef8SRob Clark { 80063f17ef8SRob Clark struct drm_device *dev = obj->dev; 80163f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 80263f17ef8SRob Clark 803d4d7d363SRob Clark msm_gem_assert_locked(obj); 80463f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 80563f17ef8SRob Clark 80663f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 80763f17ef8SRob Clark put_iova_spaces(obj, false); 80863f17ef8SRob Clark 80963f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 81063f17ef8SRob Clark 81163f17ef8SRob Clark put_pages(obj); 81263f17ef8SRob Clark } 81363f17ef8SRob Clark 814599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 815e1e9db2cSRob Clark { 816e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 817e1e9db2cSRob Clark 818d4d7d363SRob Clark msm_gem_assert_locked(obj); 8190e08270aSSushmita Susheelendra 82090643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 821e1e9db2cSRob Clark return; 822e1e9db2cSRob Clark 823e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 824e1e9db2cSRob Clark msm_obj->vaddr = NULL; 825e1e9db2cSRob Clark } 826e1e9db2cSRob Clark 82701780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 82801780d02SRob Clark { 829d4d7d363SRob Clark msm_gem_assert_locked(obj); 83001780d02SRob Clark 83101780d02SRob Clark if (to_msm_bo(obj)->pin_count) 83201780d02SRob Clark return true; 83301780d02SRob Clark 83401780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 83501780d02SRob Clark } 83601780d02SRob Clark 837ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 838ba00c3f2SRob Clark { 839b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 840f755e227SChris Wilson unsigned long remain = 841f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 842f755e227SChris Wilson long ret; 843b6295f9aSRob Clark 8447bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 8457bc80a54SChristian König true, remain); 846f755e227SChris Wilson if (ret == 0) 847f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 848f755e227SChris Wilson else if (ret < 0) 849f755e227SChris Wilson return ret; 850ba00c3f2SRob Clark 8517198e6b0SRob Clark /* TODO cache maintenance */ 8527198e6b0SRob Clark 853b6295f9aSRob Clark return 0; 8547198e6b0SRob Clark } 8557198e6b0SRob Clark 8567198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8577198e6b0SRob Clark { 8587198e6b0SRob Clark /* TODO cache maintenance */ 859c8afe684SRob Clark return 0; 860c8afe684SRob Clark } 861c8afe684SRob Clark 862c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 863528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 864528107c8SRob Clark struct msm_gem_stats *stats) 865c8afe684SRob Clark { 866c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 86752791eeeSChristian König struct dma_resv *robj = obj->resv; 8684b85f7f5SRob Clark struct msm_gem_vma *vma; 869c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8704cd33c48SRob Clark const char *madv; 871c8afe684SRob Clark 872a6ae74c9SRob Clark msm_gem_lock(obj); 873b6295f9aSRob Clark 874528107c8SRob Clark stats->all.count++; 875528107c8SRob Clark stats->all.size += obj->size; 876528107c8SRob Clark 877da53d8b5SRob Clark if (msm_gem_active(obj)) { 878528107c8SRob Clark stats->active.count++; 879528107c8SRob Clark stats->active.size += obj->size; 880528107c8SRob Clark } 881528107c8SRob Clark 882f48f3563SRob Clark if (msm_obj->pages) { 883f48f3563SRob Clark stats->resident.count++; 884f48f3563SRob Clark stats->resident.size += obj->size; 885f48f3563SRob Clark } 886f48f3563SRob Clark 8874cd33c48SRob Clark switch (msm_obj->madv) { 8884cd33c48SRob Clark case __MSM_MADV_PURGED: 889528107c8SRob Clark stats->purged.count++; 890528107c8SRob Clark stats->purged.size += obj->size; 8914cd33c48SRob Clark madv = " purged"; 8924cd33c48SRob Clark break; 8934cd33c48SRob Clark case MSM_MADV_DONTNEED: 8940054eeb7SRob Clark stats->purgeable.count++; 8950054eeb7SRob Clark stats->purgeable.size += obj->size; 8964cd33c48SRob Clark madv = " purgeable"; 8974cd33c48SRob Clark break; 8984cd33c48SRob Clark case MSM_MADV_WILLNEED: 8994cd33c48SRob Clark default: 9004cd33c48SRob Clark madv = ""; 9014cd33c48SRob Clark break; 9024cd33c48SRob Clark } 9034cd33c48SRob Clark 904575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 905da53d8b5SRob Clark msm_obj->flags, msm_gem_active(obj) ? 'A' : 'I', 9062c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 907667ce33eSRob Clark off, msm_obj->vaddr); 908667ce33eSRob Clark 9090815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 910667ce33eSRob Clark 911575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 912575f0485SJordan Crouse 913575f0485SJordan Crouse seq_puts(m, " vmas:"); 914575f0485SJordan Crouse 91525faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 91625faf2f2SRob Clark const char *name, *comm; 91725faf2f2SRob Clark if (vma->aspace) { 91825faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 91925faf2f2SRob Clark struct task_struct *task = 92025faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 92125faf2f2SRob Clark if (task) { 92225faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 923ac3e4f42SRob Clark put_task_struct(task); 92425faf2f2SRob Clark } else { 92525faf2f2SRob Clark comm = NULL; 92625faf2f2SRob Clark } 92725faf2f2SRob Clark name = aspace->name; 92825faf2f2SRob Clark } else { 92925faf2f2SRob Clark name = comm = NULL; 93025faf2f2SRob Clark } 93125faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 93225faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 93325faf2f2SRob Clark vma->aspace, vma->iova, 93425faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 935ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 93625faf2f2SRob Clark kfree(comm); 93725faf2f2SRob Clark } 938575f0485SJordan Crouse 939575f0485SJordan Crouse seq_puts(m, "\n"); 940575f0485SJordan Crouse } 941b6295f9aSRob Clark 942f19ee2f3SChristian König dma_resv_describe(robj, m); 943a6ae74c9SRob Clark msm_gem_unlock(obj); 944c8afe684SRob Clark } 945c8afe684SRob Clark 946c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 947c8afe684SRob Clark { 948528107c8SRob Clark struct msm_gem_stats stats = {}; 949c8afe684SRob Clark struct msm_gem_object *msm_obj; 950c8afe684SRob Clark 9510815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9526ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 953c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 954575f0485SJordan Crouse seq_puts(m, " "); 955528107c8SRob Clark msm_gem_describe(obj, m, &stats); 956c8afe684SRob Clark } 957c8afe684SRob Clark 958528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 959528107c8SRob Clark stats.all.count, stats.all.size); 960528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 961528107c8SRob Clark stats.active.count, stats.active.size); 962f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 963f48f3563SRob Clark stats.resident.count, stats.resident.size); 964f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9650054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 966528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 967528107c8SRob Clark stats.purged.count, stats.purged.size); 968c8afe684SRob Clark } 969c8afe684SRob Clark #endif 970c8afe684SRob Clark 971030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 9726867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 973c8afe684SRob Clark { 974c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 97548e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 97648e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 97748e7f183SKristian H. Kristensen 9786ed0897cSRob Clark mutex_lock(&priv->obj_lock); 9796ed0897cSRob Clark list_del(&msm_obj->node); 9806ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 9816ed0897cSRob Clark 98220d0ae2fSRob Clark put_iova_spaces(obj, true); 983c8afe684SRob Clark 98405b84911SRob Clark if (obj->import_attach) { 98590643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 98605b84911SRob Clark 98705b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 98805b84911SRob Clark * ours, just free the array we allocated: 98905b84911SRob Clark */ 9902098105eSMichal Hocko kvfree(msm_obj->pages); 99105b84911SRob Clark 99257f04815SRob Clark put_iova_vmas(obj); 99357f04815SRob Clark 994f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 99505b84911SRob Clark } else { 996599089c6SRob Clark msm_gem_vunmap(obj); 997c8afe684SRob Clark put_pages(obj); 99857f04815SRob Clark put_iova_vmas(obj); 99905b84911SRob Clark } 1000c8afe684SRob Clark 1001c8afe684SRob Clark drm_gem_object_release(obj); 1002c8afe684SRob Clark 1003c8afe684SRob Clark kfree(msm_obj); 1004c8afe684SRob Clark } 1005c8afe684SRob Clark 1006510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1007510410bfSThomas Zimmermann { 1008510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1009510410bfSThomas Zimmermann 10101c71222eSSuren Baghdasaryan vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP); 1011510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1012510410bfSThomas Zimmermann 1013510410bfSThomas Zimmermann return 0; 1014510410bfSThomas Zimmermann } 1015510410bfSThomas Zimmermann 1016c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1017c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10180815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10190815d774SJordan Crouse char *name) 1020c8afe684SRob Clark { 1021c8afe684SRob Clark struct drm_gem_object *obj; 1022c8afe684SRob Clark int ret; 1023c8afe684SRob Clark 1024c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1025c8afe684SRob Clark 1026c8afe684SRob Clark if (IS_ERR(obj)) 1027c8afe684SRob Clark return PTR_ERR(obj); 1028c8afe684SRob Clark 10290815d774SJordan Crouse if (name) 10300815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10310815d774SJordan Crouse 1032c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1033c8afe684SRob Clark 1034c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1035f7d33950SEmil Velikov drm_gem_object_put(obj); 1036c8afe684SRob Clark 1037c8afe684SRob Clark return ret; 1038c8afe684SRob Clark } 1039c8afe684SRob Clark 10403c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10413c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10423c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10433c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10443c9edd9cSThomas Zimmermann }; 10453c9edd9cSThomas Zimmermann 10463c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10473c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10483c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10493c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10503c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10513c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10523c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1053510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 10543c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10553c9edd9cSThomas Zimmermann }; 10563c9edd9cSThomas Zimmermann 105705b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 105805b84911SRob Clark uint32_t size, uint32_t flags, 10593cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1060c8afe684SRob Clark { 1061d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1062c8afe684SRob Clark struct msm_gem_object *msm_obj; 1063c8afe684SRob Clark 1064c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1065c8afe684SRob Clark case MSM_BO_CACHED: 1066c8afe684SRob Clark case MSM_BO_WC: 1067c8afe684SRob Clark break; 1068d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1069d12e3390SJonathan Marek if (priv->has_cached_coherent) 1070d12e3390SJonathan Marek break; 1071e181ad43SGustavo A. R. Silva fallthrough; 1072c8afe684SRob Clark default: 10732d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1074c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 107505b84911SRob Clark return -EINVAL; 1076c8afe684SRob Clark } 1077c8afe684SRob Clark 1078667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 107905b84911SRob Clark if (!msm_obj) 108005b84911SRob Clark return -ENOMEM; 1081c8afe684SRob Clark 1082c8afe684SRob Clark msm_obj->flags = flags; 10834cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1084c8afe684SRob Clark 1085027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 10864b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 10874b85f7f5SRob Clark 108805b84911SRob Clark *obj = &msm_obj->base; 10893c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 109005b84911SRob Clark 109105b84911SRob Clark return 0; 109205b84911SRob Clark } 109305b84911SRob Clark 1094030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 109505b84911SRob Clark { 1096f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 10973cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1098871d812aSRob Clark struct drm_gem_object *obj = NULL; 1099f4839bd5SRob Clark bool use_vram = false; 110005b84911SRob Clark int ret; 110105b84911SRob Clark 110205b84911SRob Clark size = PAGE_ALIGN(size); 110305b84911SRob Clark 1104c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1105f4839bd5SRob Clark use_vram = true; 110686f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1107f4839bd5SRob Clark use_vram = true; 1108f4839bd5SRob Clark 110990643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1110f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1111f4839bd5SRob Clark 11121a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11131a5dff5dSJordan Crouse * infrastructure grumpy 11141a5dff5dSJordan Crouse */ 11151a5dff5dSJordan Crouse if (size == 0) 11161a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11171a5dff5dSJordan Crouse 11183cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 111905b84911SRob Clark if (ret) 11202203bd0eSDan Carpenter return ERR_PTR(ret); 112105b84911SRob Clark 11223cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11233cbdc8d8SAkhil P Oommen 1124f4839bd5SRob Clark if (use_vram) { 11254b85f7f5SRob Clark struct msm_gem_vma *vma; 1126f4839bd5SRob Clark struct page **pages; 1127b3949a9aSHans Verkuil 1128a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1129a694ffedSIskren Chernev 1130a6ae74c9SRob Clark msm_gem_lock(obj); 1131f4839bd5SRob Clark 11324b85f7f5SRob Clark vma = add_vma(obj, NULL); 1133a6ae74c9SRob Clark msm_gem_unlock(obj); 11344b85f7f5SRob Clark if (IS_ERR(vma)) { 11354b85f7f5SRob Clark ret = PTR_ERR(vma); 11364b85f7f5SRob Clark goto fail; 11374b85f7f5SRob Clark } 11384b85f7f5SRob Clark 11394b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11404b85f7f5SRob Clark 114107fcad0dSIskren Chernev msm_gem_lock(obj); 1142f4839bd5SRob Clark pages = get_pages(obj); 114307fcad0dSIskren Chernev msm_gem_unlock(obj); 1144f4839bd5SRob Clark if (IS_ERR(pages)) { 1145f4839bd5SRob Clark ret = PTR_ERR(pages); 1146f4839bd5SRob Clark goto fail; 1147f4839bd5SRob Clark } 11484b85f7f5SRob Clark 11494b85f7f5SRob Clark vma->iova = physaddr(obj); 1150f4839bd5SRob Clark } else { 115105b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 115205b84911SRob Clark if (ret) 115305b84911SRob Clark goto fail; 11540abdba47SLucas Stach /* 11550abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11560abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11570abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11580abdba47SLucas Stach * expected if you're going to pin these pages. 11590abdba47SLucas Stach */ 11600abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1161871d812aSRob Clark } 116205b84911SRob Clark 1163b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.unbacked, obj); 11643cbdc8d8SAkhil P Oommen 11656ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11666ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11676ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11686ed0897cSRob Clark 116905b84911SRob Clark return obj; 117005b84911SRob Clark 117105b84911SRob Clark fail: 1172f7d33950SEmil Velikov drm_gem_object_put(obj); 117305b84911SRob Clark return ERR_PTR(ret); 117405b84911SRob Clark } 117505b84911SRob Clark 117605b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 117779f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 117805b84911SRob Clark { 11793cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 118005b84911SRob Clark struct msm_gem_object *msm_obj; 118105b84911SRob Clark struct drm_gem_object *obj; 118279f0e202SRob Clark uint32_t size; 118305b84911SRob Clark int ret, npages; 118405b84911SRob Clark 1185871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1186c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 11876a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1188871d812aSRob Clark return ERR_PTR(-EINVAL); 1189871d812aSRob Clark } 1190871d812aSRob Clark 119179f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 119205b84911SRob Clark 11933cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 119405b84911SRob Clark if (ret) 11952203bd0eSDan Carpenter return ERR_PTR(ret); 119605b84911SRob Clark 119705b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 119805b84911SRob Clark 119905b84911SRob Clark npages = size / PAGE_SIZE; 120005b84911SRob Clark 120105b84911SRob Clark msm_obj = to_msm_bo(obj); 1202a6ae74c9SRob Clark msm_gem_lock(obj); 120305b84911SRob Clark msm_obj->sgt = sgt; 12042098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 120505b84911SRob Clark if (!msm_obj->pages) { 1206a6ae74c9SRob Clark msm_gem_unlock(obj); 120705b84911SRob Clark ret = -ENOMEM; 120805b84911SRob Clark goto fail; 120905b84911SRob Clark } 121005b84911SRob Clark 1211c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12120e08270aSSushmita Susheelendra if (ret) { 1213a6ae74c9SRob Clark msm_gem_unlock(obj); 121405b84911SRob Clark goto fail; 12150e08270aSSushmita Susheelendra } 121605b84911SRob Clark 1217a6ae74c9SRob Clark msm_gem_unlock(obj); 12183cbdc8d8SAkhil P Oommen 1219b352ba54SRob Clark drm_gem_lru_move_tail(&priv->lru.pinned, obj); 12203cbdc8d8SAkhil P Oommen 12216ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12226ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12236ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12246ed0897cSRob Clark 1225c8afe684SRob Clark return obj; 1226c8afe684SRob Clark 1227c8afe684SRob Clark fail: 1228f7d33950SEmil Velikov drm_gem_object_put(obj); 1229c8afe684SRob Clark return ERR_PTR(ret); 1230c8afe684SRob Clark } 12318223286dSJordan Crouse 1232030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12338223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1234030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12358223286dSJordan Crouse { 12368223286dSJordan Crouse void *vaddr; 1237030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12388223286dSJordan Crouse int ret; 12398223286dSJordan Crouse 12408223286dSJordan Crouse if (IS_ERR(obj)) 12418223286dSJordan Crouse return ERR_CAST(obj); 12428223286dSJordan Crouse 12438223286dSJordan Crouse if (iova) { 12449fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 124593f7abf1SJordan Crouse if (ret) 124693f7abf1SJordan Crouse goto err; 12478223286dSJordan Crouse } 12488223286dSJordan Crouse 12498223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1250c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12517ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 125293f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 125393f7abf1SJordan Crouse goto err; 12548223286dSJordan Crouse } 12558223286dSJordan Crouse 12568223286dSJordan Crouse if (bo) 12578223286dSJordan Crouse *bo = obj; 12588223286dSJordan Crouse 12598223286dSJordan Crouse return vaddr; 126093f7abf1SJordan Crouse err: 1261f7d33950SEmil Velikov drm_gem_object_put(obj); 126293f7abf1SJordan Crouse 126393f7abf1SJordan Crouse return ERR_PTR(ret); 126493f7abf1SJordan Crouse 12658223286dSJordan Crouse } 12668223286dSJordan Crouse 12671e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1268030af2b0SRob Clark struct msm_gem_address_space *aspace) 12691e29dff0SJordan Crouse { 12701e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 12711e29dff0SJordan Crouse return; 12721e29dff0SJordan Crouse 12731e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 12747ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1275f7d33950SEmil Velikov drm_gem_object_put(bo); 12761e29dff0SJordan Crouse } 12770815d774SJordan Crouse 12780815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 12790815d774SJordan Crouse { 12800815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 12810815d774SJordan Crouse va_list ap; 12820815d774SJordan Crouse 12830815d774SJordan Crouse if (!fmt) 12840815d774SJordan Crouse return; 12850815d774SJordan Crouse 12860815d774SJordan Crouse va_start(ap, fmt); 12870815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 12880815d774SJordan Crouse va_end(ap); 12890815d774SJordan Crouse } 1290