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> 8c8afe684SRob Clark #include <linux/spinlock.h> 9c8afe684SRob Clark #include <linux/shmem_fs.h> 1005b84911SRob Clark #include <linux/dma-buf.h> 1101c8f1c4SDan Williams #include <linux/pfn_t.h> 12c8afe684SRob Clark 13feea39a8SSam Ravnborg #include <drm/drm_prime.h> 14feea39a8SSam Ravnborg 15c8afe684SRob Clark #include "msm_drv.h" 16fde5de6cSRob Clark #include "msm_fence.h" 17c8afe684SRob Clark #include "msm_gem.h" 187198e6b0SRob Clark #include "msm_gpu.h" 19871d812aSRob Clark #include "msm_mmu.h" 20c8afe684SRob Clark 210e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj); 220e08270aSSushmita Susheelendra 230e08270aSSushmita Susheelendra 24871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 25871d812aSRob Clark { 26871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 27871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 28871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 29871d812aSRob Clark priv->vram.paddr; 30871d812aSRob Clark } 31871d812aSRob Clark 32072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 33072f1f91SRob Clark { 34072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 35072f1f91SRob Clark return !msm_obj->vram_node; 36072f1f91SRob Clark } 37072f1f91SRob Clark 383de433c5SRob Clark /* 393de433c5SRob Clark * Cache sync.. this is a bit over-complicated, to fit dma-mapping 403de433c5SRob Clark * API. Really GPU cache is out of scope here (handled on cmdstream) 413de433c5SRob Clark * and all we need to do is invalidate newly allocated pages before 423de433c5SRob Clark * mapping to CPU as uncached/writecombine. 433de433c5SRob Clark * 443de433c5SRob Clark * On top of this, we have the added headache, that depending on 453de433c5SRob Clark * display generation, the display's iommu may be wired up to either 463de433c5SRob Clark * the toplevel drm device (mdss), or to the mdp sub-node, meaning 473de433c5SRob Clark * that here we either have dma-direct or iommu ops. 483de433c5SRob Clark * 493de433c5SRob Clark * Let this be a cautionary tail of abstraction gone wrong. 503de433c5SRob Clark */ 513de433c5SRob Clark 523de433c5SRob Clark static void sync_for_device(struct msm_gem_object *msm_obj) 533de433c5SRob Clark { 543de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 553de433c5SRob Clark 567690a33fSMarek Szyprowski dma_map_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 573de433c5SRob Clark } 583de433c5SRob Clark 593de433c5SRob Clark static void sync_for_cpu(struct msm_gem_object *msm_obj) 603de433c5SRob Clark { 613de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 623de433c5SRob Clark 637690a33fSMarek Szyprowski dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 643de433c5SRob Clark } 653de433c5SRob Clark 66871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 670e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 68871d812aSRob Clark { 69871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 70871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 71871d812aSRob Clark dma_addr_t paddr; 72871d812aSRob Clark struct page **p; 73871d812aSRob Clark int ret, i; 74871d812aSRob Clark 752098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 76871d812aSRob Clark if (!p) 77871d812aSRob Clark return ERR_PTR(-ENOMEM); 78871d812aSRob Clark 790e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 804e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 810e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 82871d812aSRob Clark if (ret) { 832098105eSMichal Hocko kvfree(p); 84871d812aSRob Clark return ERR_PTR(ret); 85871d812aSRob Clark } 86871d812aSRob Clark 87871d812aSRob Clark paddr = physaddr(obj); 88871d812aSRob Clark for (i = 0; i < npages; i++) { 89871d812aSRob Clark p[i] = phys_to_page(paddr); 90871d812aSRob Clark paddr += PAGE_SIZE; 91871d812aSRob Clark } 92871d812aSRob Clark 93871d812aSRob Clark return p; 94871d812aSRob Clark } 95c8afe684SRob Clark 96c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 97c8afe684SRob Clark { 98c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99c8afe684SRob Clark 100c8afe684SRob Clark if (!msm_obj->pages) { 101c8afe684SRob Clark struct drm_device *dev = obj->dev; 102871d812aSRob Clark struct page **p; 103c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 104c8afe684SRob Clark 105072f1f91SRob Clark if (use_pages(obj)) 1060cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 107871d812aSRob Clark else 108871d812aSRob Clark p = get_pages_vram(obj, npages); 109871d812aSRob Clark 110c8afe684SRob Clark if (IS_ERR(p)) { 1116a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 112c8afe684SRob Clark PTR_ERR(p)); 113c8afe684SRob Clark return p; 114c8afe684SRob Clark } 115c8afe684SRob Clark 11662e3a3e3SPrakash Kamliya msm_obj->pages = p; 11762e3a3e3SPrakash Kamliya 118707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1191f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 12062e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 121c8afe684SRob Clark 1226a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 12362e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 12462e3a3e3SPrakash Kamliya return ptr; 12562e3a3e3SPrakash Kamliya } 126c8afe684SRob Clark 127c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 128c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 129c8afe684SRob Clark */ 130c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1313de433c5SRob Clark sync_for_device(msm_obj); 132c8afe684SRob Clark } 133c8afe684SRob Clark 134c8afe684SRob Clark return msm_obj->pages; 135c8afe684SRob Clark } 136c8afe684SRob Clark 1370e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1380e08270aSSushmita Susheelendra { 1390e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1400e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1410e08270aSSushmita Susheelendra 1420e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1430e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1440e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1450e08270aSSushmita Susheelendra 1460e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1470e08270aSSushmita Susheelendra } 1480e08270aSSushmita Susheelendra 149c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 150c8afe684SRob Clark { 151c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 152c8afe684SRob Clark 153c8afe684SRob Clark if (msm_obj->pages) { 1543976626eSBen Hutchings if (msm_obj->sgt) { 1553976626eSBen Hutchings /* For non-cached buffers, ensure the new 1563976626eSBen Hutchings * pages are clean because display controller, 1573976626eSBen Hutchings * GPU, etc. are not coherent: 158c8afe684SRob Clark */ 159c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1603de433c5SRob Clark sync_for_cpu(msm_obj); 16162e3a3e3SPrakash Kamliya 162c8afe684SRob Clark sg_free_table(msm_obj->sgt); 163c8afe684SRob Clark kfree(msm_obj->sgt); 1643976626eSBen Hutchings } 165c8afe684SRob Clark 166072f1f91SRob Clark if (use_pages(obj)) 167c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1680e08270aSSushmita Susheelendra else 1690e08270aSSushmita Susheelendra put_pages_vram(obj); 170871d812aSRob Clark 171c8afe684SRob Clark msm_obj->pages = NULL; 172c8afe684SRob Clark } 173c8afe684SRob Clark } 174c8afe684SRob Clark 17505b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 17605b84911SRob Clark { 1770e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 17805b84911SRob Clark struct page **p; 1790e08270aSSushmita Susheelendra 1800e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 1810e08270aSSushmita Susheelendra 1820e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 1830e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1840e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1850e08270aSSushmita Susheelendra } 1860e08270aSSushmita Susheelendra 18705b84911SRob Clark p = get_pages(obj); 1880e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 18905b84911SRob Clark return p; 19005b84911SRob Clark } 19105b84911SRob Clark 19205b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 19305b84911SRob Clark { 19405b84911SRob Clark /* when we start tracking the pin count, then do something here */ 19505b84911SRob Clark } 19605b84911SRob Clark 197c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 198c8afe684SRob Clark struct vm_area_struct *vma) 199c8afe684SRob Clark { 200c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 201c8afe684SRob Clark 202c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 203c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 204c8afe684SRob Clark 205c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 206c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 207c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 208c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 209c8afe684SRob Clark } else { 210c8afe684SRob Clark /* 211c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 212c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 213c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 214c8afe684SRob Clark */ 215c8afe684SRob Clark vma->vm_pgoff = 0; 216295992fbSChristian König vma_set_file(vma, obj->filp); 217c8afe684SRob Clark 218c8afe684SRob Clark vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); 219c8afe684SRob Clark } 220c8afe684SRob Clark 221c8afe684SRob Clark return 0; 222c8afe684SRob Clark } 223c8afe684SRob Clark 224c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 225c8afe684SRob Clark { 226c8afe684SRob Clark int ret; 227c8afe684SRob Clark 228c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 229c8afe684SRob Clark if (ret) { 230c8afe684SRob Clark DBG("mmap failed: %d", ret); 231c8afe684SRob Clark return ret; 232c8afe684SRob Clark } 233c8afe684SRob Clark 234c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 235c8afe684SRob Clark } 236c8afe684SRob Clark 2373c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 238c8afe684SRob Clark { 23911bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 240c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2410e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 242c8afe684SRob Clark struct page **pages; 243c8afe684SRob Clark unsigned long pfn; 244c8afe684SRob Clark pgoff_t pgoff; 245a5f74ec7SSouptick Joarder int err; 246a5f74ec7SSouptick Joarder vm_fault_t ret; 247c8afe684SRob Clark 2480e08270aSSushmita Susheelendra /* 2490e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2500e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 251d78d383aSRob Clark */ 252a5f74ec7SSouptick Joarder err = mutex_lock_interruptible(&msm_obj->lock); 253a5f74ec7SSouptick Joarder if (err) { 254a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 255c8afe684SRob Clark goto out; 256a5f74ec7SSouptick Joarder } 257c8afe684SRob Clark 2580e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 2590e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 2600e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2610e08270aSSushmita Susheelendra } 2620e08270aSSushmita Susheelendra 263c8afe684SRob Clark /* make sure we have pages attached now */ 264c8afe684SRob Clark pages = get_pages(obj); 265c8afe684SRob Clark if (IS_ERR(pages)) { 266a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 267c8afe684SRob Clark goto out_unlock; 268c8afe684SRob Clark } 269c8afe684SRob Clark 270c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2711a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 272c8afe684SRob Clark 273871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 274c8afe684SRob Clark 2751a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 276c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 277c8afe684SRob Clark 278a5f74ec7SSouptick Joarder ret = vmf_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 279c8afe684SRob Clark out_unlock: 2800e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 281c8afe684SRob Clark out: 282a5f74ec7SSouptick Joarder return ret; 283c8afe684SRob Clark } 284c8afe684SRob Clark 285c8afe684SRob Clark /** get mmap offset */ 286c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 287c8afe684SRob Clark { 288c8afe684SRob Clark struct drm_device *dev = obj->dev; 2890e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 290c8afe684SRob Clark int ret; 291c8afe684SRob Clark 2920e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 293c8afe684SRob Clark 294c8afe684SRob Clark /* Make it mmapable */ 295c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 296c8afe684SRob Clark 297c8afe684SRob Clark if (ret) { 2986a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 299c8afe684SRob Clark return 0; 300c8afe684SRob Clark } 301c8afe684SRob Clark 302c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 303c8afe684SRob Clark } 304c8afe684SRob Clark 305c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 306c8afe684SRob Clark { 307c8afe684SRob Clark uint64_t offset; 3080e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 3090e08270aSSushmita Susheelendra 3100e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 311c8afe684SRob Clark offset = mmap_offset(obj); 3120e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 313c8afe684SRob Clark return offset; 314c8afe684SRob Clark } 315c8afe684SRob Clark 3164b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3174b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3184b85f7f5SRob Clark { 3194b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3204b85f7f5SRob Clark struct msm_gem_vma *vma; 3214b85f7f5SRob Clark 3220e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3230e08270aSSushmita Susheelendra 3244b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3254b85f7f5SRob Clark if (!vma) 3264b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3274b85f7f5SRob Clark 3284b85f7f5SRob Clark vma->aspace = aspace; 3294b85f7f5SRob Clark 3304b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3314b85f7f5SRob Clark 3324b85f7f5SRob Clark return vma; 3334b85f7f5SRob Clark } 3344b85f7f5SRob Clark 3354b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3364b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3374b85f7f5SRob Clark { 3384b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3394b85f7f5SRob Clark struct msm_gem_vma *vma; 3404b85f7f5SRob Clark 3410e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3424b85f7f5SRob Clark 3434b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3444b85f7f5SRob Clark if (vma->aspace == aspace) 3454b85f7f5SRob Clark return vma; 3464b85f7f5SRob Clark } 3474b85f7f5SRob Clark 3484b85f7f5SRob Clark return NULL; 3494b85f7f5SRob Clark } 3504b85f7f5SRob Clark 3514b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3524b85f7f5SRob Clark { 3534b85f7f5SRob Clark if (!vma) 3544b85f7f5SRob Clark return; 3554b85f7f5SRob Clark 3564b85f7f5SRob Clark list_del(&vma->list); 3574b85f7f5SRob Clark kfree(vma); 3584b85f7f5SRob Clark } 3594b85f7f5SRob Clark 3600e08270aSSushmita Susheelendra /* Called with msm_obj->lock locked */ 3614fe5f65eSRob Clark static void 3624fe5f65eSRob Clark put_iova(struct drm_gem_object *obj) 3634fe5f65eSRob Clark { 3644fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3654b85f7f5SRob Clark struct msm_gem_vma *vma, *tmp; 3664fe5f65eSRob Clark 3670e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3684fe5f65eSRob Clark 3694b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 370d67f1b6dSBrian Masney if (vma->aspace) { 3717ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 3727ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 373d67f1b6dSBrian Masney } 3744b85f7f5SRob Clark del_vma(vma); 3754fe5f65eSRob Clark } 3764fe5f65eSRob Clark } 3774fe5f65eSRob Clark 378c0ee9794SJordan Crouse static int msm_gem_get_iova_locked(struct drm_gem_object *obj, 379d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 380d3b8877eSJonathan Marek u64 range_start, u64 range_end) 381c8afe684SRob Clark { 382c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3834b85f7f5SRob Clark struct msm_gem_vma *vma; 384c8afe684SRob Clark int ret = 0; 385c8afe684SRob Clark 386c0ee9794SJordan Crouse WARN_ON(!mutex_is_locked(&msm_obj->lock)); 387cb1e3818SRob Clark 3884b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 389871d812aSRob Clark 3904b85f7f5SRob Clark if (!vma) { 3914b85f7f5SRob Clark vma = add_vma(obj, aspace); 392c0ee9794SJordan Crouse if (IS_ERR(vma)) 393c0ee9794SJordan Crouse return PTR_ERR(vma); 3944b85f7f5SRob Clark 395d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 396d3b8877eSJonathan Marek range_start, range_end); 397c0ee9794SJordan Crouse if (ret) { 398c0ee9794SJordan Crouse del_vma(vma); 399c0ee9794SJordan Crouse return ret; 400c8afe684SRob Clark } 4014b85f7f5SRob Clark } 4024b85f7f5SRob Clark 4034b85f7f5SRob Clark *iova = vma->iova; 4044b85f7f5SRob Clark return 0; 405c0ee9794SJordan Crouse } 4064b85f7f5SRob Clark 407c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 408c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 409c0ee9794SJordan Crouse { 410c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 411c0ee9794SJordan Crouse struct msm_gem_vma *vma; 412c0ee9794SJordan Crouse struct page **pages; 413bbc2cd07SRob Clark int prot = IOMMU_READ; 414bbc2cd07SRob Clark 415bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 416bbc2cd07SRob Clark prot |= IOMMU_WRITE; 417c0ee9794SJordan Crouse 4180b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4190b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4200b462d7aSJonathan Marek 421c0ee9794SJordan Crouse WARN_ON(!mutex_is_locked(&msm_obj->lock)); 422c0ee9794SJordan Crouse 423c0ee9794SJordan Crouse if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 424c0ee9794SJordan Crouse return -EBUSY; 425c0ee9794SJordan Crouse 426c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 427c0ee9794SJordan Crouse if (WARN_ON(!vma)) 428c0ee9794SJordan Crouse return -EINVAL; 429c0ee9794SJordan Crouse 430c0ee9794SJordan Crouse pages = get_pages(obj); 431c0ee9794SJordan Crouse if (IS_ERR(pages)) 432c0ee9794SJordan Crouse return PTR_ERR(pages); 433c0ee9794SJordan Crouse 434bbc2cd07SRob Clark return msm_gem_map_vma(aspace, vma, prot, 435bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 436c0ee9794SJordan Crouse } 437c0ee9794SJordan Crouse 438d3b8877eSJonathan Marek /* 439d3b8877eSJonathan Marek * get iova and pin it. Should have a matching put 440d3b8877eSJonathan Marek * limits iova to specified range (in pages) 441d3b8877eSJonathan Marek */ 442d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 443d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 444d3b8877eSJonathan Marek u64 range_start, u64 range_end) 445c0ee9794SJordan Crouse { 446c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 447c0ee9794SJordan Crouse u64 local; 448c0ee9794SJordan Crouse int ret; 449c0ee9794SJordan Crouse 450c0ee9794SJordan Crouse mutex_lock(&msm_obj->lock); 451c0ee9794SJordan Crouse 452d3b8877eSJonathan Marek ret = msm_gem_get_iova_locked(obj, aspace, &local, 453d3b8877eSJonathan Marek range_start, range_end); 454c0ee9794SJordan Crouse 455c0ee9794SJordan Crouse if (!ret) 456c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 457c0ee9794SJordan Crouse 458c0ee9794SJordan Crouse if (!ret) 459c0ee9794SJordan Crouse *iova = local; 460c0ee9794SJordan Crouse 4610e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 462c8afe684SRob Clark return ret; 463c8afe684SRob Clark } 464c8afe684SRob Clark 465d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 466d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 467d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 468d3b8877eSJonathan Marek { 469d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 470d3b8877eSJonathan Marek } 471d3b8877eSJonathan Marek 4727ad0e8cfSJordan Crouse /* 4737ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 4747ad0e8cfSJordan Crouse * valid for the life of the object 4757ad0e8cfSJordan Crouse */ 4769fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 4779fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 4789fe041f6SJordan Crouse { 4799fe041f6SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 4809fe041f6SJordan Crouse int ret; 4819fe041f6SJordan Crouse 4829fe041f6SJordan Crouse mutex_lock(&msm_obj->lock); 483d3b8877eSJonathan Marek ret = msm_gem_get_iova_locked(obj, aspace, iova, 0, U64_MAX); 4849fe041f6SJordan Crouse mutex_unlock(&msm_obj->lock); 4859fe041f6SJordan Crouse 4869fe041f6SJordan Crouse return ret; 4879fe041f6SJordan Crouse } 4889fe041f6SJordan Crouse 4892638d90aSRob Clark /* get iova without taking a reference, used in places where you have 4909fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 4912638d90aSRob Clark */ 4928bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 4938bdcd949SRob Clark struct msm_gem_address_space *aspace) 4942638d90aSRob Clark { 4950e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4964b85f7f5SRob Clark struct msm_gem_vma *vma; 4974b85f7f5SRob Clark 4980e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4994b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 5000e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5014b85f7f5SRob Clark WARN_ON(!vma); 5024b85f7f5SRob Clark 5034b85f7f5SRob Clark return vma ? vma->iova : 0; 5042638d90aSRob Clark } 5052638d90aSRob Clark 5067ad0e8cfSJordan Crouse /* 5077ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5087ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5097ad0e8cfSJordan Crouse * to get rid of it 5107ad0e8cfSJordan Crouse */ 5117ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5128bdcd949SRob Clark struct msm_gem_address_space *aspace) 513c8afe684SRob Clark { 5147ad0e8cfSJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 5157ad0e8cfSJordan Crouse struct msm_gem_vma *vma; 5167ad0e8cfSJordan Crouse 5177ad0e8cfSJordan Crouse mutex_lock(&msm_obj->lock); 5187ad0e8cfSJordan Crouse vma = lookup_vma(obj, aspace); 5197ad0e8cfSJordan Crouse 5207ad0e8cfSJordan Crouse if (!WARN_ON(!vma)) 5217ad0e8cfSJordan Crouse msm_gem_unmap_vma(aspace, vma); 5227ad0e8cfSJordan Crouse 5237ad0e8cfSJordan Crouse mutex_unlock(&msm_obj->lock); 524c8afe684SRob Clark } 525c8afe684SRob Clark 526c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 527c8afe684SRob Clark struct drm_mode_create_dumb *args) 528c8afe684SRob Clark { 529c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 530c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 531c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5320815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 533c8afe684SRob Clark } 534c8afe684SRob Clark 535c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 536c8afe684SRob Clark uint32_t handle, uint64_t *offset) 537c8afe684SRob Clark { 538c8afe684SRob Clark struct drm_gem_object *obj; 539c8afe684SRob Clark int ret = 0; 540c8afe684SRob Clark 541c8afe684SRob Clark /* GEM does all our handle to object mapping */ 542a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 543c8afe684SRob Clark if (obj == NULL) { 544c8afe684SRob Clark ret = -ENOENT; 545c8afe684SRob Clark goto fail; 546c8afe684SRob Clark } 547c8afe684SRob Clark 548c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 549c8afe684SRob Clark 550f7d33950SEmil Velikov drm_gem_object_put(obj); 551c8afe684SRob Clark 552c8afe684SRob Clark fail: 553c8afe684SRob Clark return ret; 554c8afe684SRob Clark } 555c8afe684SRob Clark 556fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 557c8afe684SRob Clark { 5580e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5590e08270aSSushmita Susheelendra int ret = 0; 5600e08270aSSushmita Susheelendra 5618b6b7d84SDaniel Vetter if (obj->import_attach) 5628b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 5638b6b7d84SDaniel Vetter 5640e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5650e08270aSSushmita Susheelendra 566fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 5676a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 568fad33f4bSRob Clark msm_obj->madv, madv); 5690e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5700e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 571c8afe684SRob Clark } 572c8afe684SRob Clark 5730e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 5740e08270aSSushmita Susheelendra * check vmap_count (is_vunmapable()) outside of msm_obj->lock. 5750e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 5760e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 5770e08270aSSushmita Susheelendra * hold msm_obj->lock) 5780e08270aSSushmita Susheelendra */ 5790e08270aSSushmita Susheelendra msm_obj->vmap_count++; 5800e08270aSSushmita Susheelendra 5810e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 5820e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 5830e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 5840e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 5850e08270aSSushmita Susheelendra goto fail; 5860e08270aSSushmita Susheelendra } 5870e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 5880e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 5890e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 5900e08270aSSushmita Susheelendra ret = -ENOMEM; 5910e08270aSSushmita Susheelendra goto fail; 5920e08270aSSushmita Susheelendra } 5930e08270aSSushmita Susheelendra } 5940e08270aSSushmita Susheelendra 5950e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5960e08270aSSushmita Susheelendra return msm_obj->vaddr; 5970e08270aSSushmita Susheelendra 5980e08270aSSushmita Susheelendra fail: 599e1e9db2cSRob Clark msm_obj->vmap_count--; 6000e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6010e08270aSSushmita Susheelendra return ERR_PTR(ret); 60218f23049SRob Clark } 60318f23049SRob Clark 604fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 605fad33f4bSRob Clark { 606fad33f4bSRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 607fad33f4bSRob Clark } 608fad33f4bSRob Clark 609fad33f4bSRob Clark /* 610fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 611fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 612fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 613fad33f4bSRob Clark * active list. 614fad33f4bSRob Clark */ 615fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 616fad33f4bSRob Clark { 617fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 618fad33f4bSRob Clark } 619fad33f4bSRob Clark 62018f23049SRob Clark void msm_gem_put_vaddr(struct drm_gem_object *obj) 62118f23049SRob Clark { 6220e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6230e08270aSSushmita Susheelendra 6240e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 6250e08270aSSushmita Susheelendra WARN_ON(msm_obj->vmap_count < 1); 6260e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6270e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 62818f23049SRob Clark } 62918f23049SRob Clark 6304cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6314cd33c48SRob Clark * false or -errno. 6324cd33c48SRob Clark */ 6334cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6344cd33c48SRob Clark { 6354cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6364cd33c48SRob Clark 6370e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 6380e08270aSSushmita Susheelendra 6394cd33c48SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 6404cd33c48SRob Clark 6414cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 6424cd33c48SRob Clark msm_obj->madv = madv; 6434cd33c48SRob Clark 6440e08270aSSushmita Susheelendra madv = msm_obj->madv; 6450e08270aSSushmita Susheelendra 6460e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6470e08270aSSushmita Susheelendra 6480e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 6494cd33c48SRob Clark } 6504cd33c48SRob Clark 6510e08270aSSushmita Susheelendra void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) 65268209390SRob Clark { 65368209390SRob Clark struct drm_device *dev = obj->dev; 65468209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 65568209390SRob Clark 65668209390SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 65768209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 65868209390SRob Clark WARN_ON(obj->import_attach); 65968209390SRob Clark 6600e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6610e08270aSSushmita Susheelendra 66268209390SRob Clark put_iova(obj); 66368209390SRob Clark 6640e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 66568209390SRob Clark 66668209390SRob Clark put_pages(obj); 66768209390SRob Clark 66868209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 66968209390SRob Clark 67068209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 67168209390SRob Clark drm_gem_free_mmap_offset(obj); 67268209390SRob Clark 67368209390SRob Clark /* Our goal here is to return as much of the memory as 67468209390SRob Clark * is possible back to the system as we are called from OOM. 67568209390SRob Clark * To do this we must instruct the shmfs to drop all of its 67668209390SRob Clark * backing pages, *now*. 67768209390SRob Clark */ 67868209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 67968209390SRob Clark 68068209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 68168209390SRob Clark 0, (loff_t)-1); 6820e08270aSSushmita Susheelendra 6830e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 68468209390SRob Clark } 68568209390SRob Clark 6860e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj) 687e1e9db2cSRob Clark { 688e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 689e1e9db2cSRob Clark 6900e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 6910e08270aSSushmita Susheelendra 692e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 693e1e9db2cSRob Clark return; 694e1e9db2cSRob Clark 695e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 696e1e9db2cSRob Clark msm_obj->vaddr = NULL; 697e1e9db2cSRob Clark } 698e1e9db2cSRob Clark 6990e08270aSSushmita Susheelendra void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) 7000e08270aSSushmita Susheelendra { 7010e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7020e08270aSSushmita Susheelendra 7030e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 7040e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 7050e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 7060e08270aSSushmita Susheelendra } 7070e08270aSSushmita Susheelendra 708b6295f9aSRob Clark /* must be called before _move_to_active().. */ 709b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 710b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 711b6295f9aSRob Clark { 71252791eeeSChristian König struct dma_resv_list *fobj; 713f54d1867SChris Wilson struct dma_fence *fence; 714b6295f9aSRob Clark int i, ret; 715b6295f9aSRob Clark 71652791eeeSChristian König fobj = dma_resv_get_list(obj->resv); 717b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 71852791eeeSChristian König fence = dma_resv_get_excl(obj->resv); 719b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 720b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 721f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 722b6295f9aSRob Clark if (ret) 723b6295f9aSRob Clark return ret; 724b6295f9aSRob Clark } 725b6295f9aSRob Clark } 726b6295f9aSRob Clark 727b6295f9aSRob Clark if (!exclusive || !fobj) 728b6295f9aSRob Clark return 0; 729b6295f9aSRob Clark 730b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 731b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 73252791eeeSChristian König dma_resv_held(obj->resv)); 733b6295f9aSRob Clark if (fence->context != fctx->context) { 734f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 735b6295f9aSRob Clark if (ret) 736b6295f9aSRob Clark return ret; 737b6295f9aSRob Clark } 738b6295f9aSRob Clark } 739b6295f9aSRob Clark 740b6295f9aSRob Clark return 0; 741b6295f9aSRob Clark } 742b6295f9aSRob Clark 7439d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7447198e6b0SRob Clark { 7457198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7469d8baa2bSAkhil P Oommen WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 7474cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 7489d8baa2bSAkhil P Oommen 7499d8baa2bSAkhil P Oommen if (!atomic_fetch_inc(&msm_obj->active_count)) { 7507198e6b0SRob Clark msm_obj->gpu = gpu; 7517198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7527198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 7537198e6b0SRob Clark } 7549d8baa2bSAkhil P Oommen } 7557198e6b0SRob Clark 7569d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 7577198e6b0SRob Clark { 7587198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7599d8baa2bSAkhil P Oommen struct msm_drm_private *priv = obj->dev->dev_private; 7607198e6b0SRob Clark 7619d8baa2bSAkhil P Oommen WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 7627198e6b0SRob Clark 7639d8baa2bSAkhil P Oommen if (!atomic_dec_return(&msm_obj->active_count)) { 7647198e6b0SRob Clark msm_obj->gpu = NULL; 7657198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7667198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 7677198e6b0SRob Clark } 7689d8baa2bSAkhil P Oommen } 7697198e6b0SRob Clark 770ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 771ba00c3f2SRob Clark { 772b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 773f755e227SChris Wilson unsigned long remain = 774f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 775f755e227SChris Wilson long ret; 776b6295f9aSRob Clark 77752791eeeSChristian König ret = dma_resv_wait_timeout_rcu(obj->resv, write, 778f755e227SChris Wilson true, remain); 779f755e227SChris Wilson if (ret == 0) 780f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 781f755e227SChris Wilson else if (ret < 0) 782f755e227SChris Wilson return ret; 783ba00c3f2SRob Clark 7847198e6b0SRob Clark /* TODO cache maintenance */ 7857198e6b0SRob Clark 786b6295f9aSRob Clark return 0; 7877198e6b0SRob Clark } 7887198e6b0SRob Clark 7897198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 7907198e6b0SRob Clark { 7917198e6b0SRob Clark /* TODO cache maintenance */ 792c8afe684SRob Clark return 0; 793c8afe684SRob Clark } 794c8afe684SRob Clark 795c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 796f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 797b6295f9aSRob Clark struct seq_file *m) 798b6295f9aSRob Clark { 799f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 800a3115621SDave Airlie seq_printf(m, "\t%9s: %s %s seq %llu\n", type, 801b6295f9aSRob Clark fence->ops->get_driver_name(fence), 802b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 803b6295f9aSRob Clark fence->seqno); 804b6295f9aSRob Clark } 805b6295f9aSRob Clark 806c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 807c8afe684SRob Clark { 808c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 80952791eeeSChristian König struct dma_resv *robj = obj->resv; 81052791eeeSChristian König struct dma_resv_list *fobj; 811f54d1867SChris Wilson struct dma_fence *fence; 8124b85f7f5SRob Clark struct msm_gem_vma *vma; 813c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8144cd33c48SRob Clark const char *madv; 815c8afe684SRob Clark 8160e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 817b6295f9aSRob Clark 8184cd33c48SRob Clark switch (msm_obj->madv) { 8194cd33c48SRob Clark case __MSM_MADV_PURGED: 8204cd33c48SRob Clark madv = " purged"; 8214cd33c48SRob Clark break; 8224cd33c48SRob Clark case MSM_MADV_DONTNEED: 8234cd33c48SRob Clark madv = " purgeable"; 8244cd33c48SRob Clark break; 8254cd33c48SRob Clark case MSM_MADV_WILLNEED: 8264cd33c48SRob Clark default: 8274cd33c48SRob Clark madv = ""; 8284cd33c48SRob Clark break; 8294cd33c48SRob Clark } 8304cd33c48SRob Clark 831575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 8327198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 8332c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 834667ce33eSRob Clark off, msm_obj->vaddr); 835667ce33eSRob Clark 8360815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 837667ce33eSRob Clark 838575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 839575f0485SJordan Crouse 840575f0485SJordan Crouse seq_puts(m, " vmas:"); 841575f0485SJordan Crouse 84225faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 84325faf2f2SRob Clark const char *name, *comm; 84425faf2f2SRob Clark if (vma->aspace) { 84525faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 84625faf2f2SRob Clark struct task_struct *task = 84725faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 84825faf2f2SRob Clark if (task) { 84925faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 85025faf2f2SRob Clark } else { 85125faf2f2SRob Clark comm = NULL; 85225faf2f2SRob Clark } 85325faf2f2SRob Clark name = aspace->name; 85425faf2f2SRob Clark } else { 85525faf2f2SRob Clark name = comm = NULL; 85625faf2f2SRob Clark } 85725faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 85825faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 85925faf2f2SRob Clark vma->aspace, vma->iova, 86025faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 8617ad0e8cfSJordan Crouse vma->inuse); 86225faf2f2SRob Clark kfree(comm); 86325faf2f2SRob Clark } 864575f0485SJordan Crouse 865575f0485SJordan Crouse seq_puts(m, "\n"); 866575f0485SJordan Crouse } 867b6295f9aSRob Clark 868b6295f9aSRob Clark rcu_read_lock(); 869b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 870b6295f9aSRob Clark if (fobj) { 871b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 872b6295f9aSRob Clark 873b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 874b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 875b6295f9aSRob Clark describe_fence(fence, "Shared", m); 876b6295f9aSRob Clark } 877b6295f9aSRob Clark } 878b6295f9aSRob Clark 879b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 880b6295f9aSRob Clark if (fence) 881b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 882b6295f9aSRob Clark rcu_read_unlock(); 8830e08270aSSushmita Susheelendra 8840e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 885c8afe684SRob Clark } 886c8afe684SRob Clark 887c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 888c8afe684SRob Clark { 889c8afe684SRob Clark struct msm_gem_object *msm_obj; 890c8afe684SRob Clark int count = 0; 891c8afe684SRob Clark size_t size = 0; 892c8afe684SRob Clark 8930815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 894c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 895c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 896575f0485SJordan Crouse seq_puts(m, " "); 897c8afe684SRob Clark msm_gem_describe(obj, m); 898c8afe684SRob Clark count++; 899c8afe684SRob Clark size += obj->size; 900c8afe684SRob Clark } 901c8afe684SRob Clark 902c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 903c8afe684SRob Clark } 904c8afe684SRob Clark #endif 905c8afe684SRob Clark 906eecd7fd8SEmil Velikov /* don't call directly! Use drm_gem_object_put_locked() and friends */ 907c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 908c8afe684SRob Clark { 909c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 91048e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 91148e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 91248e7f183SKristian H. Kristensen 91348e7f183SKristian H. Kristensen if (llist_add(&msm_obj->freed, &priv->free_list)) 91448e7f183SKristian H. Kristensen queue_work(priv->wq, &priv->free_work); 91548e7f183SKristian H. Kristensen } 91648e7f183SKristian H. Kristensen 91748e7f183SKristian H. Kristensen static void free_object(struct msm_gem_object *msm_obj) 91848e7f183SKristian H. Kristensen { 91948e7f183SKristian H. Kristensen struct drm_gem_object *obj = &msm_obj->base; 92048e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 921c8afe684SRob Clark 922c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 923c8afe684SRob Clark 9247198e6b0SRob Clark /* object should not be on active list: */ 9257198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 9267198e6b0SRob Clark 927c8afe684SRob Clark list_del(&msm_obj->mm_list); 928c8afe684SRob Clark 9290e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 9300e08270aSSushmita Susheelendra 9314fe5f65eSRob Clark put_iova(obj); 932c8afe684SRob Clark 93305b84911SRob Clark if (obj->import_attach) { 9348b6b7d84SDaniel Vetter WARN_ON(msm_obj->vaddr); 93505b84911SRob Clark 93605b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 93705b84911SRob Clark * ours, just free the array we allocated: 93805b84911SRob Clark */ 93905b84911SRob Clark if (msm_obj->pages) 9402098105eSMichal Hocko kvfree(msm_obj->pages); 94105b84911SRob Clark 942f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 94305b84911SRob Clark } else { 9440e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 945c8afe684SRob Clark put_pages(obj); 94605b84911SRob Clark } 947c8afe684SRob Clark 948c8afe684SRob Clark drm_gem_object_release(obj); 949c8afe684SRob Clark 9500e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 951c8afe684SRob Clark kfree(msm_obj); 952c8afe684SRob Clark } 953c8afe684SRob Clark 95448e7f183SKristian H. Kristensen void msm_gem_free_work(struct work_struct *work) 95548e7f183SKristian H. Kristensen { 95648e7f183SKristian H. Kristensen struct msm_drm_private *priv = 95748e7f183SKristian H. Kristensen container_of(work, struct msm_drm_private, free_work); 95848e7f183SKristian H. Kristensen struct drm_device *dev = priv->dev; 95948e7f183SKristian H. Kristensen struct llist_node *freed; 96048e7f183SKristian H. Kristensen struct msm_gem_object *msm_obj, *next; 96148e7f183SKristian H. Kristensen 96248e7f183SKristian H. Kristensen while ((freed = llist_del_all(&priv->free_list))) { 96348e7f183SKristian H. Kristensen 96448e7f183SKristian H. Kristensen mutex_lock(&dev->struct_mutex); 96548e7f183SKristian H. Kristensen 96648e7f183SKristian H. Kristensen llist_for_each_entry_safe(msm_obj, next, 96748e7f183SKristian H. Kristensen freed, freed) 96848e7f183SKristian H. Kristensen free_object(msm_obj); 96948e7f183SKristian H. Kristensen 97048e7f183SKristian H. Kristensen mutex_unlock(&dev->struct_mutex); 97148e7f183SKristian H. Kristensen 97248e7f183SKristian H. Kristensen if (need_resched()) 97348e7f183SKristian H. Kristensen break; 97448e7f183SKristian H. Kristensen } 97548e7f183SKristian H. Kristensen } 97648e7f183SKristian H. Kristensen 977c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 978c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 9790815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 9800815d774SJordan Crouse char *name) 981c8afe684SRob Clark { 982c8afe684SRob Clark struct drm_gem_object *obj; 983c8afe684SRob Clark int ret; 984c8afe684SRob Clark 985c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 986c8afe684SRob Clark 987c8afe684SRob Clark if (IS_ERR(obj)) 988c8afe684SRob Clark return PTR_ERR(obj); 989c8afe684SRob Clark 9900815d774SJordan Crouse if (name) 9910815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 9920815d774SJordan Crouse 993c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 994c8afe684SRob Clark 995c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 996f7d33950SEmil Velikov drm_gem_object_put(obj); 997c8afe684SRob Clark 998c8afe684SRob Clark return ret; 999c8afe684SRob Clark } 1000c8afe684SRob Clark 10013c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10023c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10033c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10043c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10053c9edd9cSThomas Zimmermann }; 10063c9edd9cSThomas Zimmermann 10073c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10083c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10093c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10103c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10113c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10123c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10133c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 10143c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10153c9edd9cSThomas Zimmermann }; 10163c9edd9cSThomas Zimmermann 101705b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 101805b84911SRob Clark uint32_t size, uint32_t flags, 10193cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1020c8afe684SRob Clark { 1021c8afe684SRob Clark struct msm_gem_object *msm_obj; 1022c8afe684SRob Clark 1023c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1024c8afe684SRob Clark case MSM_BO_UNCACHED: 1025c8afe684SRob Clark case MSM_BO_CACHED: 1026c8afe684SRob Clark case MSM_BO_WC: 1027c8afe684SRob Clark break; 1028c8afe684SRob Clark default: 10296a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 1030c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 103105b84911SRob Clark return -EINVAL; 1032c8afe684SRob Clark } 1033c8afe684SRob Clark 1034667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 103505b84911SRob Clark if (!msm_obj) 103605b84911SRob Clark return -ENOMEM; 1037c8afe684SRob Clark 10380e08270aSSushmita Susheelendra mutex_init(&msm_obj->lock); 10390e08270aSSushmita Susheelendra 1040c8afe684SRob Clark msm_obj->flags = flags; 10414cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1042c8afe684SRob Clark 10437198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 10444b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 10454b85f7f5SRob Clark 104605b84911SRob Clark *obj = &msm_obj->base; 10473c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 104805b84911SRob Clark 104905b84911SRob Clark return 0; 105005b84911SRob Clark } 105105b84911SRob Clark 10520e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 10530e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 105405b84911SRob Clark { 1055f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 10563cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1057871d812aSRob Clark struct drm_gem_object *obj = NULL; 1058f4839bd5SRob Clark bool use_vram = false; 105905b84911SRob Clark int ret; 106005b84911SRob Clark 106105b84911SRob Clark size = PAGE_ALIGN(size); 106205b84911SRob Clark 1063c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1064f4839bd5SRob Clark use_vram = true; 106586f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1066f4839bd5SRob Clark use_vram = true; 1067f4839bd5SRob Clark 1068f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 1069f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1070f4839bd5SRob Clark 10711a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 10721a5dff5dSJordan Crouse * infrastructure grumpy 10731a5dff5dSJordan Crouse */ 10741a5dff5dSJordan Crouse if (size == 0) 10751a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 10761a5dff5dSJordan Crouse 10773cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 107805b84911SRob Clark if (ret) 107905b84911SRob Clark goto fail; 108005b84911SRob Clark 10813cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 10823cbdc8d8SAkhil P Oommen 1083f4839bd5SRob Clark if (use_vram) { 10844b85f7f5SRob Clark struct msm_gem_vma *vma; 1085f4839bd5SRob Clark struct page **pages; 1086b3949a9aSHans Verkuil 1087b3949a9aSHans Verkuil mutex_lock(&msm_obj->lock); 1088f4839bd5SRob Clark 10894b85f7f5SRob Clark vma = add_vma(obj, NULL); 1090b3949a9aSHans Verkuil mutex_unlock(&msm_obj->lock); 10914b85f7f5SRob Clark if (IS_ERR(vma)) { 10924b85f7f5SRob Clark ret = PTR_ERR(vma); 10934b85f7f5SRob Clark goto fail; 10944b85f7f5SRob Clark } 10954b85f7f5SRob Clark 10964b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 10974b85f7f5SRob Clark 1098f4839bd5SRob Clark drm_gem_private_object_init(dev, obj, size); 1099f4839bd5SRob Clark 1100f4839bd5SRob Clark pages = get_pages(obj); 1101f4839bd5SRob Clark if (IS_ERR(pages)) { 1102f4839bd5SRob Clark ret = PTR_ERR(pages); 1103f4839bd5SRob Clark goto fail; 1104f4839bd5SRob Clark } 11054b85f7f5SRob Clark 11064b85f7f5SRob Clark vma->iova = physaddr(obj); 1107f4839bd5SRob Clark } else { 110805b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 110905b84911SRob Clark if (ret) 111005b84911SRob Clark goto fail; 11110abdba47SLucas Stach /* 11120abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11130abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11140abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11150abdba47SLucas Stach * expected if you're going to pin these pages. 11160abdba47SLucas Stach */ 11170abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1118871d812aSRob Clark } 111905b84911SRob Clark 11203cbdc8d8SAkhil P Oommen if (struct_mutex_locked) { 11213cbdc8d8SAkhil P Oommen WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 11223cbdc8d8SAkhil P Oommen list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 11233cbdc8d8SAkhil P Oommen } else { 11243cbdc8d8SAkhil P Oommen mutex_lock(&dev->struct_mutex); 11253cbdc8d8SAkhil P Oommen list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 11263cbdc8d8SAkhil P Oommen mutex_unlock(&dev->struct_mutex); 11273cbdc8d8SAkhil P Oommen } 11283cbdc8d8SAkhil P Oommen 112905b84911SRob Clark return obj; 113005b84911SRob Clark 113105b84911SRob Clark fail: 1132f7d33950SEmil Velikov drm_gem_object_put(obj); 113305b84911SRob Clark return ERR_PTR(ret); 113405b84911SRob Clark } 113505b84911SRob Clark 11360e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 11370e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 11380e08270aSSushmita Susheelendra { 11390e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 11400e08270aSSushmita Susheelendra } 11410e08270aSSushmita Susheelendra 11420e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 11430e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 11440e08270aSSushmita Susheelendra { 11450e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 11460e08270aSSushmita Susheelendra } 11470e08270aSSushmita Susheelendra 114805b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 114979f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 115005b84911SRob Clark { 11513cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 115205b84911SRob Clark struct msm_gem_object *msm_obj; 115305b84911SRob Clark struct drm_gem_object *obj; 115479f0e202SRob Clark uint32_t size; 115505b84911SRob Clark int ret, npages; 115605b84911SRob Clark 1157871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1158c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 11596a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1160871d812aSRob Clark return ERR_PTR(-EINVAL); 1161871d812aSRob Clark } 1162871d812aSRob Clark 116379f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 116405b84911SRob Clark 11653cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 116605b84911SRob Clark if (ret) 116705b84911SRob Clark goto fail; 116805b84911SRob Clark 116905b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 117005b84911SRob Clark 117105b84911SRob Clark npages = size / PAGE_SIZE; 117205b84911SRob Clark 117305b84911SRob Clark msm_obj = to_msm_bo(obj); 11740e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 117505b84911SRob Clark msm_obj->sgt = sgt; 11762098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 117705b84911SRob Clark if (!msm_obj->pages) { 11780e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 117905b84911SRob Clark ret = -ENOMEM; 118005b84911SRob Clark goto fail; 118105b84911SRob Clark } 118205b84911SRob Clark 1183*c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 11840e08270aSSushmita Susheelendra if (ret) { 11850e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 118605b84911SRob Clark goto fail; 11870e08270aSSushmita Susheelendra } 118805b84911SRob Clark 11890e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 11903cbdc8d8SAkhil P Oommen 11913cbdc8d8SAkhil P Oommen mutex_lock(&dev->struct_mutex); 11923cbdc8d8SAkhil P Oommen list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 11933cbdc8d8SAkhil P Oommen mutex_unlock(&dev->struct_mutex); 11943cbdc8d8SAkhil P Oommen 1195c8afe684SRob Clark return obj; 1196c8afe684SRob Clark 1197c8afe684SRob Clark fail: 1198f7d33950SEmil Velikov drm_gem_object_put(obj); 1199c8afe684SRob Clark return ERR_PTR(ret); 1200c8afe684SRob Clark } 12018223286dSJordan Crouse 12028223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12038223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12048223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 12058223286dSJordan Crouse { 12068223286dSJordan Crouse void *vaddr; 12078223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 12088223286dSJordan Crouse int ret; 12098223286dSJordan Crouse 12108223286dSJordan Crouse if (IS_ERR(obj)) 12118223286dSJordan Crouse return ERR_CAST(obj); 12128223286dSJordan Crouse 12138223286dSJordan Crouse if (iova) { 12149fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 121593f7abf1SJordan Crouse if (ret) 121693f7abf1SJordan Crouse goto err; 12178223286dSJordan Crouse } 12188223286dSJordan Crouse 12198223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1220c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12217ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 122293f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 122393f7abf1SJordan Crouse goto err; 12248223286dSJordan Crouse } 12258223286dSJordan Crouse 12268223286dSJordan Crouse if (bo) 12278223286dSJordan Crouse *bo = obj; 12288223286dSJordan Crouse 12298223286dSJordan Crouse return vaddr; 123093f7abf1SJordan Crouse err: 123193f7abf1SJordan Crouse if (locked) 1232eecd7fd8SEmil Velikov drm_gem_object_put_locked(obj); 123393f7abf1SJordan Crouse else 1234f7d33950SEmil Velikov drm_gem_object_put(obj); 123593f7abf1SJordan Crouse 123693f7abf1SJordan Crouse return ERR_PTR(ret); 123793f7abf1SJordan Crouse 12388223286dSJordan Crouse } 12398223286dSJordan Crouse 12408223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12418223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12428223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 12438223286dSJordan Crouse { 12448223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 12458223286dSJordan Crouse } 12468223286dSJordan Crouse 12478223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 12488223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12498223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 12508223286dSJordan Crouse { 12518223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 12528223286dSJordan Crouse } 12531e29dff0SJordan Crouse 12541e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 12551e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 12561e29dff0SJordan Crouse { 12571e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 12581e29dff0SJordan Crouse return; 12591e29dff0SJordan Crouse 12601e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 12617ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 12621e29dff0SJordan Crouse 12631e29dff0SJordan Crouse if (locked) 1264eecd7fd8SEmil Velikov drm_gem_object_put_locked(bo); 12651e29dff0SJordan Crouse else 1266f7d33950SEmil Velikov drm_gem_object_put(bo); 12671e29dff0SJordan Crouse } 12680815d774SJordan Crouse 12690815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 12700815d774SJordan Crouse { 12710815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 12720815d774SJordan Crouse va_list ap; 12730815d774SJordan Crouse 12740815d774SJordan Crouse if (!fmt) 12750815d774SJordan Crouse return; 12760815d774SJordan Crouse 12770815d774SJordan Crouse va_start(ap, fmt); 12780815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 12790815d774SJordan Crouse va_end(ap); 12800815d774SJordan Crouse } 1281