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 22901df24dSRob Clark static void update_lru(struct drm_gem_object *obj); 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++) { 89b3ed524fSChristian König p[i] = pfn_to_page(__phys_to_pfn(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 10090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 10107fcad0dSIskren Chernev 102c8afe684SRob Clark if (!msm_obj->pages) { 103c8afe684SRob Clark struct drm_device *dev = obj->dev; 104871d812aSRob Clark struct page **p; 105c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 106c8afe684SRob Clark 107072f1f91SRob Clark if (use_pages(obj)) 1080cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 109871d812aSRob Clark else 110871d812aSRob Clark p = get_pages_vram(obj, npages); 111871d812aSRob Clark 112c8afe684SRob Clark if (IS_ERR(p)) { 1136a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 114c8afe684SRob Clark PTR_ERR(p)); 115c8afe684SRob Clark return p; 116c8afe684SRob Clark } 117c8afe684SRob Clark 11862e3a3e3SPrakash Kamliya msm_obj->pages = p; 11962e3a3e3SPrakash Kamliya 120707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1211f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 12262e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 123c8afe684SRob Clark 1246a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 12562e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 12662e3a3e3SPrakash Kamliya return ptr; 12762e3a3e3SPrakash Kamliya } 128c8afe684SRob Clark 129c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 130c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 131c8afe684SRob Clark */ 1328b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 1333de433c5SRob Clark sync_for_device(msm_obj); 13464fcbde7SRob Clark 135901df24dSRob Clark update_lru(obj); 136c8afe684SRob Clark } 137c8afe684SRob Clark 138c8afe684SRob Clark return msm_obj->pages; 139c8afe684SRob Clark } 140c8afe684SRob Clark 1410e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1420e08270aSSushmita Susheelendra { 1430e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1440e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1450e08270aSSushmita Susheelendra 1460e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1470e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1480e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1490e08270aSSushmita Susheelendra 1500e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1510e08270aSSushmita Susheelendra } 1520e08270aSSushmita Susheelendra 153c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 154c8afe684SRob Clark { 155c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 156c8afe684SRob Clark 157c8afe684SRob Clark if (msm_obj->pages) { 1583976626eSBen Hutchings if (msm_obj->sgt) { 1593976626eSBen Hutchings /* For non-cached buffers, ensure the new 1603976626eSBen Hutchings * pages are clean because display controller, 1613976626eSBen Hutchings * GPU, etc. are not coherent: 162c8afe684SRob Clark */ 1638b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 1643de433c5SRob Clark sync_for_cpu(msm_obj); 16562e3a3e3SPrakash Kamliya 166c8afe684SRob Clark sg_free_table(msm_obj->sgt); 167c8afe684SRob Clark kfree(msm_obj->sgt); 168b9a31d0dSRob Clark msm_obj->sgt = NULL; 1693976626eSBen Hutchings } 170c8afe684SRob Clark 171072f1f91SRob Clark if (use_pages(obj)) 172c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1730e08270aSSushmita Susheelendra else 1740e08270aSSushmita Susheelendra put_pages_vram(obj); 175871d812aSRob Clark 176c8afe684SRob Clark msm_obj->pages = NULL; 177c8afe684SRob Clark } 178c8afe684SRob Clark } 179c8afe684SRob Clark 180e7cd5ee9SRob Clark static struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj) 18105b84911SRob Clark { 1820e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 18305b84911SRob Clark struct page **p; 1840e08270aSSushmita Susheelendra 185e7cd5ee9SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 1860e08270aSSushmita Susheelendra 18790643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 1880e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1890e08270aSSushmita Susheelendra } 1900e08270aSSushmita Susheelendra 19105b84911SRob Clark p = get_pages(obj); 19210f76165SRob Clark if (!IS_ERR(p)) { 1939fd5ff7fSRob Clark to_msm_bo(obj)->pin_count++; 194901df24dSRob Clark update_lru(obj); 19510f76165SRob Clark } 19610f76165SRob Clark 19705b84911SRob Clark return p; 19805b84911SRob Clark } 19905b84911SRob Clark 200e7cd5ee9SRob Clark struct page **msm_gem_pin_pages(struct drm_gem_object *obj) 201e7cd5ee9SRob Clark { 202e7cd5ee9SRob Clark struct page **p; 203e7cd5ee9SRob Clark 204e7cd5ee9SRob Clark msm_gem_lock(obj); 205e7cd5ee9SRob Clark p = msm_gem_pin_pages_locked(obj); 206e7cd5ee9SRob Clark msm_gem_unlock(obj); 207e7cd5ee9SRob Clark 208e7cd5ee9SRob Clark return p; 209e7cd5ee9SRob Clark } 210e7cd5ee9SRob Clark 211e7cd5ee9SRob Clark void msm_gem_unpin_pages(struct drm_gem_object *obj) 21205b84911SRob Clark { 21310f76165SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 21410f76165SRob Clark 21510f76165SRob Clark msm_gem_lock(obj); 2169fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 21710f76165SRob Clark msm_gem_unlock(obj); 21805b84911SRob Clark } 21905b84911SRob Clark 220af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 221af9b3547SJonathan Marek { 2228b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 223af9b3547SJonathan Marek return pgprot_writecombine(prot); 224af9b3547SJonathan Marek return prot; 225af9b3547SJonathan Marek } 226af9b3547SJonathan Marek 2273c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 228c8afe684SRob Clark { 22911bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 230c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2310e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 232c8afe684SRob Clark struct page **pages; 233c8afe684SRob Clark unsigned long pfn; 234c8afe684SRob Clark pgoff_t pgoff; 235a5f74ec7SSouptick Joarder int err; 236a5f74ec7SSouptick Joarder vm_fault_t ret; 237c8afe684SRob Clark 2380e08270aSSushmita Susheelendra /* 2390e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2400e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 241d78d383aSRob Clark */ 242a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 243a5f74ec7SSouptick Joarder if (err) { 244a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 245c8afe684SRob Clark goto out; 246a5f74ec7SSouptick Joarder } 247c8afe684SRob Clark 24890643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 249a6ae74c9SRob Clark msm_gem_unlock(obj); 2500e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2510e08270aSSushmita Susheelendra } 2520e08270aSSushmita Susheelendra 253c8afe684SRob Clark /* make sure we have pages attached now */ 254c8afe684SRob Clark pages = get_pages(obj); 255c8afe684SRob Clark if (IS_ERR(pages)) { 256a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 257c8afe684SRob Clark goto out_unlock; 258c8afe684SRob Clark } 259c8afe684SRob Clark 260c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2611a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 262c8afe684SRob Clark 263871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 264c8afe684SRob Clark 2651a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 266c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 267c8afe684SRob Clark 2688246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 2698246913aSRob Clark 270c8afe684SRob Clark out_unlock: 271a6ae74c9SRob Clark msm_gem_unlock(obj); 272c8afe684SRob Clark out: 273a5f74ec7SSouptick Joarder return ret; 274c8afe684SRob Clark } 275c8afe684SRob Clark 276c8afe684SRob Clark /** get mmap offset */ 277c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 278c8afe684SRob Clark { 279c8afe684SRob Clark struct drm_device *dev = obj->dev; 280c8afe684SRob Clark int ret; 281c8afe684SRob Clark 28290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 283c8afe684SRob Clark 284c8afe684SRob Clark /* Make it mmapable */ 285c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 286c8afe684SRob Clark 287c8afe684SRob Clark if (ret) { 2886a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 289c8afe684SRob Clark return 0; 290c8afe684SRob Clark } 291c8afe684SRob Clark 292c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 293c8afe684SRob Clark } 294c8afe684SRob Clark 295c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 296c8afe684SRob Clark { 297c8afe684SRob Clark uint64_t offset; 2980e08270aSSushmita Susheelendra 299a6ae74c9SRob Clark msm_gem_lock(obj); 300c8afe684SRob Clark offset = mmap_offset(obj); 301a6ae74c9SRob Clark msm_gem_unlock(obj); 302c8afe684SRob Clark return offset; 303c8afe684SRob Clark } 304c8afe684SRob Clark 3054b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3064b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3074b85f7f5SRob Clark { 3084b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3094b85f7f5SRob Clark struct msm_gem_vma *vma; 3104b85f7f5SRob Clark 31190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3120e08270aSSushmita Susheelendra 3134b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3144b85f7f5SRob Clark if (!vma) 3154b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3164b85f7f5SRob Clark 3174b85f7f5SRob Clark vma->aspace = aspace; 3184b85f7f5SRob Clark 3194b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3204b85f7f5SRob Clark 3214b85f7f5SRob Clark return vma; 3224b85f7f5SRob Clark } 3234b85f7f5SRob Clark 3244b85f7f5SRob Clark static struct msm_gem_vma *lookup_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 33090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3314b85f7f5SRob Clark 3324b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3334b85f7f5SRob Clark if (vma->aspace == aspace) 3344b85f7f5SRob Clark return vma; 3354b85f7f5SRob Clark } 3364b85f7f5SRob Clark 3374b85f7f5SRob Clark return NULL; 3384b85f7f5SRob Clark } 3394b85f7f5SRob Clark 3404b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3414b85f7f5SRob Clark { 3424b85f7f5SRob Clark if (!vma) 3434b85f7f5SRob Clark return; 3444b85f7f5SRob Clark 3454b85f7f5SRob Clark list_del(&vma->list); 3464b85f7f5SRob Clark kfree(vma); 3474b85f7f5SRob Clark } 3484b85f7f5SRob Clark 34937c68900SLee Jones /* 35020d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 35120d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 35220d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 35320d0ae2fSRob Clark * mapping. 35420d0ae2fSRob Clark */ 3554fe5f65eSRob Clark static void 35620d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3574fe5f65eSRob Clark { 3584fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3599b73bde3SIskren Chernev struct msm_gem_vma *vma; 3604fe5f65eSRob Clark 36190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3624fe5f65eSRob Clark 3639b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 364d67f1b6dSBrian Masney if (vma->aspace) { 3657ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 36620d0ae2fSRob Clark if (close) 3677ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 368d67f1b6dSBrian Masney } 3699b73bde3SIskren Chernev } 3709b73bde3SIskren Chernev } 3719b73bde3SIskren Chernev 3729b73bde3SIskren Chernev /* Called with msm_obj locked */ 3739b73bde3SIskren Chernev static void 3749b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3754fe5f65eSRob Clark { 3764fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3774fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3784fe5f65eSRob Clark 37990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3804fe5f65eSRob Clark 3814fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3824b85f7f5SRob Clark del_vma(vma); 3834fe5f65eSRob Clark } 3844fe5f65eSRob Clark } 3854fe5f65eSRob Clark 386522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 387522f1abfSRob Clark struct msm_gem_address_space *aspace, 388d3b8877eSJonathan Marek u64 range_start, u64 range_end) 389c8afe684SRob Clark { 3904b85f7f5SRob Clark struct msm_gem_vma *vma; 391c8afe684SRob Clark 39290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 393cb1e3818SRob Clark 3944b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 395871d812aSRob Clark 3964b85f7f5SRob Clark if (!vma) { 397522f1abfSRob Clark int ret; 398522f1abfSRob Clark 3994b85f7f5SRob Clark vma = add_vma(obj, aspace); 400c0ee9794SJordan Crouse if (IS_ERR(vma)) 401522f1abfSRob Clark return vma; 4024b85f7f5SRob Clark 4032ee4b5d2SRob Clark ret = msm_gem_init_vma(aspace, vma, obj->size, 404d3b8877eSJonathan Marek range_start, range_end); 405c0ee9794SJordan Crouse if (ret) { 406c0ee9794SJordan Crouse del_vma(vma); 407522f1abfSRob Clark return ERR_PTR(ret); 408c8afe684SRob Clark } 409522f1abfSRob Clark } else { 410522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 411522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4124b85f7f5SRob Clark } 4134b85f7f5SRob Clark 414522f1abfSRob Clark return vma; 415c0ee9794SJordan Crouse } 4164b85f7f5SRob Clark 41727674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 418c0ee9794SJordan Crouse { 419c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 420c0ee9794SJordan Crouse struct page **pages; 42164fcbde7SRob Clark int ret, prot = IOMMU_READ; 422bbc2cd07SRob Clark 423bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 424bbc2cd07SRob Clark prot |= IOMMU_WRITE; 425c0ee9794SJordan Crouse 4260b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4270b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4280b462d7aSJonathan Marek 429d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 430d12e3390SJonathan Marek prot |= IOMMU_CACHE; 431d12e3390SJonathan Marek 43290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 433c0ee9794SJordan Crouse 43490643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 435c0ee9794SJordan Crouse return -EBUSY; 436c0ee9794SJordan Crouse 4379fd5ff7fSRob Clark pages = msm_gem_pin_pages_locked(obj); 438c0ee9794SJordan Crouse if (IS_ERR(pages)) 439c0ee9794SJordan Crouse return PTR_ERR(pages); 440c0ee9794SJordan Crouse 441522f1abfSRob Clark ret = msm_gem_map_vma(vma->aspace, vma, prot, msm_obj->sgt, obj->size); 4429fd5ff7fSRob Clark if (ret) 4439fd5ff7fSRob Clark msm_gem_unpin_locked(obj); 44464fcbde7SRob Clark 44564fcbde7SRob Clark return ret; 446c0ee9794SJordan Crouse } 447c0ee9794SJordan Crouse 448311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 44927674c66SRob Clark { 45027674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 45127674c66SRob Clark 45227674c66SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 45327674c66SRob Clark 45427674c66SRob Clark msm_obj->pin_count--; 45527674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 45627674c66SRob Clark 457901df24dSRob Clark update_lru(obj); 45827674c66SRob Clark } 45927674c66SRob Clark 46027674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 46127674c66SRob Clark struct msm_gem_address_space *aspace) 46227674c66SRob Clark { 46327674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 46427674c66SRob Clark } 46527674c66SRob Clark 466e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 467d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 468d3b8877eSJonathan Marek u64 range_start, u64 range_end) 469c0ee9794SJordan Crouse { 470522f1abfSRob Clark struct msm_gem_vma *vma; 471c0ee9794SJordan Crouse int ret; 472c0ee9794SJordan Crouse 47390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 474c0ee9794SJordan Crouse 475522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 476522f1abfSRob Clark if (IS_ERR(vma)) 477522f1abfSRob Clark return PTR_ERR(vma); 478c0ee9794SJordan Crouse 47927674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 480c0ee9794SJordan Crouse if (!ret) 481522f1abfSRob Clark *iova = vma->iova; 482c0ee9794SJordan Crouse 483c8afe684SRob Clark return ret; 484c8afe684SRob Clark } 485c8afe684SRob Clark 486e4b87d22SRob Clark /* 487e4b87d22SRob Clark * get iova and pin it. Should have a matching put 488e4b87d22SRob Clark * limits iova to specified range (in pages) 489e4b87d22SRob Clark */ 490e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 491e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 492e4b87d22SRob Clark u64 range_start, u64 range_end) 493e4b87d22SRob Clark { 494e4b87d22SRob Clark int ret; 495e4b87d22SRob Clark 496e4b87d22SRob Clark msm_gem_lock(obj); 497e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 498e4b87d22SRob Clark msm_gem_unlock(obj); 499e4b87d22SRob Clark 500e4b87d22SRob Clark return ret; 501e4b87d22SRob Clark } 502e4b87d22SRob Clark 503d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 504d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 505d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 506d3b8877eSJonathan Marek { 507d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 508d3b8877eSJonathan Marek } 509d3b8877eSJonathan Marek 5107ad0e8cfSJordan Crouse /* 5117ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5127ad0e8cfSJordan Crouse * valid for the life of the object 5137ad0e8cfSJordan Crouse */ 5149fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5159fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5169fe041f6SJordan Crouse { 517522f1abfSRob Clark struct msm_gem_vma *vma; 518522f1abfSRob Clark int ret = 0; 5199fe041f6SJordan Crouse 520a6ae74c9SRob Clark msm_gem_lock(obj); 521522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 522522f1abfSRob Clark if (IS_ERR(vma)) { 523522f1abfSRob Clark ret = PTR_ERR(vma); 524522f1abfSRob Clark } else { 525522f1abfSRob Clark *iova = vma->iova; 526522f1abfSRob Clark } 527a6ae74c9SRob Clark msm_gem_unlock(obj); 5289fe041f6SJordan Crouse 5299fe041f6SJordan Crouse return ret; 5309fe041f6SJordan Crouse } 5319fe041f6SJordan Crouse 532a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 5338bdcd949SRob Clark struct msm_gem_address_space *aspace) 5342638d90aSRob Clark { 535a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 5364b85f7f5SRob Clark 537a636a0ffSRob Clark if (!vma) 538a636a0ffSRob Clark return 0; 5394b85f7f5SRob Clark 540a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 541a636a0ffSRob Clark return -EBUSY; 542a636a0ffSRob Clark 543a636a0ffSRob Clark msm_gem_purge_vma(vma->aspace, vma); 544a636a0ffSRob Clark msm_gem_close_vma(vma->aspace, vma); 545a636a0ffSRob Clark del_vma(vma); 546a636a0ffSRob Clark 547a636a0ffSRob Clark return 0; 5482638d90aSRob Clark } 5492638d90aSRob Clark 5507ad0e8cfSJordan Crouse /* 551a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 552a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 553a636a0ffSRob Clark * the life of the object. 554a636a0ffSRob Clark * 555a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 556e4b87d22SRob Clark */ 557a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 558a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 559e4b87d22SRob Clark { 560a636a0ffSRob Clark int ret = 0; 561a636a0ffSRob Clark 562a636a0ffSRob Clark msm_gem_lock(obj); 563a636a0ffSRob Clark if (!iova) { 564a636a0ffSRob Clark ret = clear_iova(obj, aspace); 565a636a0ffSRob Clark } else { 566e4b87d22SRob Clark struct msm_gem_vma *vma; 567a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 568a636a0ffSRob Clark if (IS_ERR(vma)) { 569a636a0ffSRob Clark ret = PTR_ERR(vma); 570a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 571a636a0ffSRob Clark clear_iova(obj, aspace); 572a636a0ffSRob Clark ret = -EBUSY; 57364fcbde7SRob Clark } 574e4b87d22SRob Clark } 575a636a0ffSRob Clark msm_gem_unlock(obj); 576a636a0ffSRob Clark 577a636a0ffSRob Clark return ret; 578a636a0ffSRob Clark } 579e4b87d22SRob Clark 580e4b87d22SRob Clark /* 5817ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5827ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5837ad0e8cfSJordan Crouse * to get rid of it 5847ad0e8cfSJordan Crouse */ 5857ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5868bdcd949SRob Clark struct msm_gem_address_space *aspace) 587c8afe684SRob Clark { 58827674c66SRob Clark struct msm_gem_vma *vma; 58927674c66SRob Clark 590a6ae74c9SRob Clark msm_gem_lock(obj); 59127674c66SRob Clark vma = lookup_vma(obj, aspace); 59227674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 593311e03c2SRob Clark msm_gem_unpin_vma(vma); 594311e03c2SRob Clark msm_gem_unpin_locked(obj); 59527674c66SRob Clark } 596a6ae74c9SRob Clark msm_gem_unlock(obj); 597c8afe684SRob Clark } 598c8afe684SRob Clark 599c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 600c8afe684SRob Clark struct drm_mode_create_dumb *args) 601c8afe684SRob Clark { 602c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 603c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 604c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 6050815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 606c8afe684SRob Clark } 607c8afe684SRob Clark 608c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 609c8afe684SRob Clark uint32_t handle, uint64_t *offset) 610c8afe684SRob Clark { 611c8afe684SRob Clark struct drm_gem_object *obj; 612c8afe684SRob Clark int ret = 0; 613c8afe684SRob Clark 614c8afe684SRob Clark /* GEM does all our handle to object mapping */ 615a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 616c8afe684SRob Clark if (obj == NULL) { 617c8afe684SRob Clark ret = -ENOENT; 618c8afe684SRob Clark goto fail; 619c8afe684SRob Clark } 620c8afe684SRob Clark 621c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 622c8afe684SRob Clark 623f7d33950SEmil Velikov drm_gem_object_put(obj); 624c8afe684SRob Clark 625c8afe684SRob Clark fail: 626c8afe684SRob Clark return ret; 627c8afe684SRob Clark } 628c8afe684SRob Clark 629fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 630c8afe684SRob Clark { 6310e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6320e08270aSSushmita Susheelendra int ret = 0; 6330e08270aSSushmita Susheelendra 63490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 635e4b87d22SRob Clark 6368b6b7d84SDaniel Vetter if (obj->import_attach) 6378b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6388b6b7d84SDaniel Vetter 63990643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6406a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 641fad33f4bSRob Clark msm_obj->madv, madv); 6420e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 643c8afe684SRob Clark } 644c8afe684SRob Clark 6450e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 646a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6470e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6480e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 649a6ae74c9SRob Clark * hold msm_obj lock) 6500e08270aSSushmita Susheelendra */ 6510e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6520e08270aSSushmita Susheelendra 6530e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6540e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6550e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6560e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6570e08270aSSushmita Susheelendra goto fail; 6580e08270aSSushmita Susheelendra } 6590e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 660af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6610e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6620e08270aSSushmita Susheelendra ret = -ENOMEM; 6630e08270aSSushmita Susheelendra goto fail; 6640e08270aSSushmita Susheelendra } 66510f76165SRob Clark 666901df24dSRob Clark update_lru(obj); 6670e08270aSSushmita Susheelendra } 6680e08270aSSushmita Susheelendra 6690e08270aSSushmita Susheelendra return msm_obj->vaddr; 6700e08270aSSushmita Susheelendra 6710e08270aSSushmita Susheelendra fail: 672e1e9db2cSRob Clark msm_obj->vmap_count--; 6730e08270aSSushmita Susheelendra return ERR_PTR(ret); 67418f23049SRob Clark } 67518f23049SRob Clark 676e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 677e4b87d22SRob Clark { 678e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 679e4b87d22SRob Clark } 680e4b87d22SRob Clark 681fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 682fad33f4bSRob Clark { 683e4b87d22SRob Clark void *ret; 684e4b87d22SRob Clark 685e4b87d22SRob Clark msm_gem_lock(obj); 686e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 687e4b87d22SRob Clark msm_gem_unlock(obj); 688e4b87d22SRob Clark 689e4b87d22SRob Clark return ret; 690fad33f4bSRob Clark } 691fad33f4bSRob Clark 692fad33f4bSRob Clark /* 693fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 694fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 695fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 696fad33f4bSRob Clark * active list. 697fad33f4bSRob Clark */ 698fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 699fad33f4bSRob Clark { 700fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 701fad33f4bSRob Clark } 702fad33f4bSRob Clark 703e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 70418f23049SRob Clark { 7050e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7060e08270aSSushmita Susheelendra 70790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 70890643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 709e4b87d22SRob Clark 7100e08270aSSushmita Susheelendra msm_obj->vmap_count--; 7114cd33c48SRob Clark } 7120e08270aSSushmita Susheelendra 7130e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7144cd33c48SRob Clark { 715a6ae74c9SRob Clark msm_gem_lock(obj); 716e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 717a6ae74c9SRob Clark msm_gem_unlock(obj); 7184cd33c48SRob Clark } 7194cd33c48SRob Clark 7204cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7214cd33c48SRob Clark * false or -errno. 7224cd33c48SRob Clark */ 7234cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7244cd33c48SRob Clark { 7254cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 72668209390SRob Clark 727a6ae74c9SRob Clark msm_gem_lock(obj); 728c8afe684SRob Clark 729c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 730c8afe684SRob Clark msm_obj->madv = madv; 731c8afe684SRob Clark 7320e08270aSSushmita Susheelendra madv = msm_obj->madv; 7330e08270aSSushmita Susheelendra 7343edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7353edfa30fSRob Clark * between inactive lists 7363edfa30fSRob Clark */ 737901df24dSRob Clark update_lru(obj); 7383edfa30fSRob Clark 739a6ae74c9SRob Clark msm_gem_unlock(obj); 7400e08270aSSushmita Susheelendra 7410e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 742c8afe684SRob Clark } 743c8afe684SRob Clark 744599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 74568209390SRob Clark { 74668209390SRob Clark struct drm_device *dev = obj->dev; 74768209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 74868209390SRob Clark 74981d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 75090643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 75168209390SRob Clark 75220d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 75320d0ae2fSRob Clark put_iova_spaces(obj, true); 7540e08270aSSushmita Susheelendra 755599089c6SRob Clark msm_gem_vunmap(obj); 75668209390SRob Clark 75781d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 75881d4d597SRob Clark 75968209390SRob Clark put_pages(obj); 76068209390SRob Clark 7619b73bde3SIskren Chernev put_iova_vmas(obj); 7629b73bde3SIskren Chernev 76368209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 764901df24dSRob Clark update_lru(obj); 76568209390SRob Clark 76668209390SRob Clark drm_gem_free_mmap_offset(obj); 76768209390SRob Clark 76868209390SRob Clark /* Our goal here is to return as much of the memory as 76968209390SRob Clark * is possible back to the system as we are called from OOM. 77068209390SRob Clark * To do this we must instruct the shmfs to drop all of its 77168209390SRob Clark * backing pages, *now*. 77268209390SRob Clark */ 77368209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 77468209390SRob Clark 77568209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 77668209390SRob Clark 0, (loff_t)-1); 77768209390SRob Clark } 77868209390SRob Clark 77937c68900SLee Jones /* 78063f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 78163f17ef8SRob Clark */ 78263f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 78363f17ef8SRob Clark { 78463f17ef8SRob Clark struct drm_device *dev = obj->dev; 78563f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 78663f17ef8SRob Clark 78763f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 78863f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 78963f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 79063f17ef8SRob Clark 79163f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 79263f17ef8SRob Clark put_iova_spaces(obj, false); 79363f17ef8SRob Clark 79463f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 79563f17ef8SRob Clark 79663f17ef8SRob Clark put_pages(obj); 79763f17ef8SRob Clark 798901df24dSRob Clark update_lru(obj); 79963f17ef8SRob Clark } 80063f17ef8SRob Clark 801599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 802e1e9db2cSRob Clark { 803e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 804e1e9db2cSRob Clark 80590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8060e08270aSSushmita Susheelendra 80790643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 808e1e9db2cSRob Clark return; 809e1e9db2cSRob Clark 810e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 811e1e9db2cSRob Clark msm_obj->vaddr = NULL; 812e1e9db2cSRob Clark } 813e1e9db2cSRob Clark 814901df24dSRob Clark static void update_lru(struct drm_gem_object *obj) 8153edfa30fSRob Clark { 816901df24dSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 817901df24dSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8183edfa30fSRob Clark 81964fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 82064fcbde7SRob Clark 8213edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8223edfa30fSRob Clark 823cc8a4d5aSRob Clark if (msm_obj->dontneed) 8240054eeb7SRob Clark mark_unpurgeable(msm_obj); 82564fcbde7SRob Clark if (msm_obj->evictable) 82664fcbde7SRob Clark mark_unevictable(msm_obj); 827cc8a4d5aSRob Clark 828cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 82964fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8303edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 83164fcbde7SRob Clark mark_evictable(msm_obj); 832cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8333edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8340054eeb7SRob Clark mark_purgeable(msm_obj); 835cc8a4d5aSRob Clark } else { 83664fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 83764fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 838cc8a4d5aSRob Clark } 8393edfa30fSRob Clark 8403edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8413edfa30fSRob Clark } 8423edfa30fSRob Clark 84301780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 84401780d02SRob Clark { 84501780d02SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 84601780d02SRob Clark 84701780d02SRob Clark if (to_msm_bo(obj)->pin_count) 84801780d02SRob Clark return true; 84901780d02SRob Clark 85001780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 85101780d02SRob Clark } 85201780d02SRob Clark 853ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 854ba00c3f2SRob Clark { 855b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 856f755e227SChris Wilson unsigned long remain = 857f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 858f755e227SChris Wilson long ret; 859b6295f9aSRob Clark 8607bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 8617bc80a54SChristian König true, remain); 862f755e227SChris Wilson if (ret == 0) 863f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 864f755e227SChris Wilson else if (ret < 0) 865f755e227SChris Wilson return ret; 866ba00c3f2SRob Clark 8677198e6b0SRob Clark /* TODO cache maintenance */ 8687198e6b0SRob Clark 869b6295f9aSRob Clark return 0; 8707198e6b0SRob Clark } 8717198e6b0SRob Clark 8727198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8737198e6b0SRob Clark { 8747198e6b0SRob Clark /* TODO cache maintenance */ 875c8afe684SRob Clark return 0; 876c8afe684SRob Clark } 877c8afe684SRob Clark 878c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 879528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 880528107c8SRob Clark struct msm_gem_stats *stats) 881c8afe684SRob Clark { 882c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 88352791eeeSChristian König struct dma_resv *robj = obj->resv; 8844b85f7f5SRob Clark struct msm_gem_vma *vma; 885c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8864cd33c48SRob Clark const char *madv; 887c8afe684SRob Clark 888a6ae74c9SRob Clark msm_gem_lock(obj); 889b6295f9aSRob Clark 890528107c8SRob Clark stats->all.count++; 891528107c8SRob Clark stats->all.size += obj->size; 892528107c8SRob Clark 893*da53d8b5SRob Clark if (msm_gem_active(obj)) { 894528107c8SRob Clark stats->active.count++; 895528107c8SRob Clark stats->active.size += obj->size; 896528107c8SRob Clark } 897528107c8SRob Clark 898f48f3563SRob Clark if (msm_obj->pages) { 899f48f3563SRob Clark stats->resident.count++; 900f48f3563SRob Clark stats->resident.size += obj->size; 901f48f3563SRob Clark } 902f48f3563SRob Clark 9034cd33c48SRob Clark switch (msm_obj->madv) { 9044cd33c48SRob Clark case __MSM_MADV_PURGED: 905528107c8SRob Clark stats->purged.count++; 906528107c8SRob Clark stats->purged.size += obj->size; 9074cd33c48SRob Clark madv = " purged"; 9084cd33c48SRob Clark break; 9094cd33c48SRob Clark case MSM_MADV_DONTNEED: 9100054eeb7SRob Clark stats->purgeable.count++; 9110054eeb7SRob Clark stats->purgeable.size += obj->size; 9124cd33c48SRob Clark madv = " purgeable"; 9134cd33c48SRob Clark break; 9144cd33c48SRob Clark case MSM_MADV_WILLNEED: 9154cd33c48SRob Clark default: 9164cd33c48SRob Clark madv = ""; 9174cd33c48SRob Clark break; 9184cd33c48SRob Clark } 9194cd33c48SRob Clark 920575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 921*da53d8b5SRob Clark msm_obj->flags, msm_gem_active(obj) ? 'A' : 'I', 9222c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 923667ce33eSRob Clark off, msm_obj->vaddr); 924667ce33eSRob Clark 9250815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 926667ce33eSRob Clark 927575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 928575f0485SJordan Crouse 929575f0485SJordan Crouse seq_puts(m, " vmas:"); 930575f0485SJordan Crouse 93125faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 93225faf2f2SRob Clark const char *name, *comm; 93325faf2f2SRob Clark if (vma->aspace) { 93425faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 93525faf2f2SRob Clark struct task_struct *task = 93625faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 93725faf2f2SRob Clark if (task) { 93825faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 939ac3e4f42SRob Clark put_task_struct(task); 94025faf2f2SRob Clark } else { 94125faf2f2SRob Clark comm = NULL; 94225faf2f2SRob Clark } 94325faf2f2SRob Clark name = aspace->name; 94425faf2f2SRob Clark } else { 94525faf2f2SRob Clark name = comm = NULL; 94625faf2f2SRob Clark } 94725faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 94825faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 94925faf2f2SRob Clark vma->aspace, vma->iova, 95025faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 951ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 95225faf2f2SRob Clark kfree(comm); 95325faf2f2SRob Clark } 954575f0485SJordan Crouse 955575f0485SJordan Crouse seq_puts(m, "\n"); 956575f0485SJordan Crouse } 957b6295f9aSRob Clark 958f19ee2f3SChristian König dma_resv_describe(robj, m); 959a6ae74c9SRob Clark msm_gem_unlock(obj); 960c8afe684SRob Clark } 961c8afe684SRob Clark 962c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 963c8afe684SRob Clark { 964528107c8SRob Clark struct msm_gem_stats stats = {}; 965c8afe684SRob Clark struct msm_gem_object *msm_obj; 966c8afe684SRob Clark 9670815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9686ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 969c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 970575f0485SJordan Crouse seq_puts(m, " "); 971528107c8SRob Clark msm_gem_describe(obj, m, &stats); 972c8afe684SRob Clark } 973c8afe684SRob Clark 974528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 975528107c8SRob Clark stats.all.count, stats.all.size); 976528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 977528107c8SRob Clark stats.active.count, stats.active.size); 978f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 979f48f3563SRob Clark stats.resident.count, stats.resident.size); 980f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9810054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 982528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 983528107c8SRob Clark stats.purged.count, stats.purged.size); 984c8afe684SRob Clark } 985c8afe684SRob Clark #endif 986c8afe684SRob Clark 987030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 9886867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 989c8afe684SRob Clark { 990c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99148e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 99248e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 99348e7f183SKristian H. Kristensen 9946ed0897cSRob Clark mutex_lock(&priv->obj_lock); 9956ed0897cSRob Clark list_del(&msm_obj->node); 9966ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 9976ed0897cSRob Clark 998d984457bSRob Clark mutex_lock(&priv->mm_lock); 999cc8a4d5aSRob Clark if (msm_obj->dontneed) 10000054eeb7SRob Clark mark_unpurgeable(msm_obj); 1001c8afe684SRob Clark list_del(&msm_obj->mm_list); 1002d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1003c8afe684SRob Clark 100420d0ae2fSRob Clark put_iova_spaces(obj, true); 1005c8afe684SRob Clark 100605b84911SRob Clark if (obj->import_attach) { 100790643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 100805b84911SRob Clark 100905b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 101005b84911SRob Clark * ours, just free the array we allocated: 101105b84911SRob Clark */ 10122098105eSMichal Hocko kvfree(msm_obj->pages); 101305b84911SRob Clark 101457f04815SRob Clark put_iova_vmas(obj); 101557f04815SRob Clark 1016f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 101705b84911SRob Clark } else { 1018599089c6SRob Clark msm_gem_vunmap(obj); 1019c8afe684SRob Clark put_pages(obj); 102057f04815SRob Clark put_iova_vmas(obj); 102105b84911SRob Clark } 1022c8afe684SRob Clark 1023c8afe684SRob Clark drm_gem_object_release(obj); 1024c8afe684SRob Clark 1025c8afe684SRob Clark kfree(msm_obj); 1026c8afe684SRob Clark } 1027c8afe684SRob Clark 1028510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1029510410bfSThomas Zimmermann { 1030510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1031510410bfSThomas Zimmermann 10328246913aSRob Clark vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; 1033510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1034510410bfSThomas Zimmermann 1035510410bfSThomas Zimmermann return 0; 1036510410bfSThomas Zimmermann } 1037510410bfSThomas Zimmermann 1038c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1039c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10400815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10410815d774SJordan Crouse char *name) 1042c8afe684SRob Clark { 1043c8afe684SRob Clark struct drm_gem_object *obj; 1044c8afe684SRob Clark int ret; 1045c8afe684SRob Clark 1046c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1047c8afe684SRob Clark 1048c8afe684SRob Clark if (IS_ERR(obj)) 1049c8afe684SRob Clark return PTR_ERR(obj); 1050c8afe684SRob Clark 10510815d774SJordan Crouse if (name) 10520815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10530815d774SJordan Crouse 1054c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1055c8afe684SRob Clark 1056c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1057f7d33950SEmil Velikov drm_gem_object_put(obj); 1058c8afe684SRob Clark 1059c8afe684SRob Clark return ret; 1060c8afe684SRob Clark } 1061c8afe684SRob Clark 10623c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10633c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10643c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10653c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10663c9edd9cSThomas Zimmermann }; 10673c9edd9cSThomas Zimmermann 10683c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10693c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10703c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10713c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10723c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10733c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10743c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1075510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 10763c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10773c9edd9cSThomas Zimmermann }; 10783c9edd9cSThomas Zimmermann 107905b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 108005b84911SRob Clark uint32_t size, uint32_t flags, 10813cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1082c8afe684SRob Clark { 1083d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1084c8afe684SRob Clark struct msm_gem_object *msm_obj; 1085c8afe684SRob Clark 1086c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1087c8afe684SRob Clark case MSM_BO_CACHED: 1088c8afe684SRob Clark case MSM_BO_WC: 1089c8afe684SRob Clark break; 1090d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1091d12e3390SJonathan Marek if (priv->has_cached_coherent) 1092d12e3390SJonathan Marek break; 1093e181ad43SGustavo A. R. Silva fallthrough; 1094c8afe684SRob Clark default: 10952d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1096c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 109705b84911SRob Clark return -EINVAL; 1098c8afe684SRob Clark } 1099c8afe684SRob Clark 1100667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 110105b84911SRob Clark if (!msm_obj) 110205b84911SRob Clark return -ENOMEM; 1103c8afe684SRob Clark 1104c8afe684SRob Clark msm_obj->flags = flags; 11054cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1106c8afe684SRob Clark 1107027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11084b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11094b85f7f5SRob Clark 111005b84911SRob Clark *obj = &msm_obj->base; 11113c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 111205b84911SRob Clark 111305b84911SRob Clark return 0; 111405b84911SRob Clark } 111505b84911SRob Clark 1116030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 111705b84911SRob Clark { 1118f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11193cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1120871d812aSRob Clark struct drm_gem_object *obj = NULL; 1121f4839bd5SRob Clark bool use_vram = false; 112205b84911SRob Clark int ret; 112305b84911SRob Clark 112405b84911SRob Clark size = PAGE_ALIGN(size); 112505b84911SRob Clark 1126c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1127f4839bd5SRob Clark use_vram = true; 112886f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1129f4839bd5SRob Clark use_vram = true; 1130f4839bd5SRob Clark 113190643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1132f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1133f4839bd5SRob Clark 11341a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11351a5dff5dSJordan Crouse * infrastructure grumpy 11361a5dff5dSJordan Crouse */ 11371a5dff5dSJordan Crouse if (size == 0) 11381a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11391a5dff5dSJordan Crouse 11403cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 114105b84911SRob Clark if (ret) 11422203bd0eSDan Carpenter return ERR_PTR(ret); 114305b84911SRob Clark 11443cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11453cbdc8d8SAkhil P Oommen 1146f4839bd5SRob Clark if (use_vram) { 11474b85f7f5SRob Clark struct msm_gem_vma *vma; 1148f4839bd5SRob Clark struct page **pages; 1149b3949a9aSHans Verkuil 1150a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1151a694ffedSIskren Chernev 1152a6ae74c9SRob Clark msm_gem_lock(obj); 1153f4839bd5SRob Clark 11544b85f7f5SRob Clark vma = add_vma(obj, NULL); 1155a6ae74c9SRob Clark msm_gem_unlock(obj); 11564b85f7f5SRob Clark if (IS_ERR(vma)) { 11574b85f7f5SRob Clark ret = PTR_ERR(vma); 11584b85f7f5SRob Clark goto fail; 11594b85f7f5SRob Clark } 11604b85f7f5SRob Clark 11614b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11624b85f7f5SRob Clark 116345f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 116445f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 116545f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 116645f56690SAlexey Minnekhanov * mm_list to be empty. 116745f56690SAlexey Minnekhanov */ 116845f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 116945f56690SAlexey Minnekhanov 117007fcad0dSIskren Chernev msm_gem_lock(obj); 1171f4839bd5SRob Clark pages = get_pages(obj); 117207fcad0dSIskren Chernev msm_gem_unlock(obj); 1173f4839bd5SRob Clark if (IS_ERR(pages)) { 1174f4839bd5SRob Clark ret = PTR_ERR(pages); 1175f4839bd5SRob Clark goto fail; 1176f4839bd5SRob Clark } 11774b85f7f5SRob Clark 11784b85f7f5SRob Clark vma->iova = physaddr(obj); 1179f4839bd5SRob Clark } else { 118005b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 118105b84911SRob Clark if (ret) 118205b84911SRob Clark goto fail; 11830abdba47SLucas Stach /* 11840abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11850abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11860abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11870abdba47SLucas Stach * expected if you're going to pin these pages. 11880abdba47SLucas Stach */ 11890abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1190871d812aSRob Clark } 119105b84911SRob Clark 1192d984457bSRob Clark mutex_lock(&priv->mm_lock); 119364fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1194d984457bSRob Clark mutex_unlock(&priv->mm_lock); 11953cbdc8d8SAkhil P Oommen 11966ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11976ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11986ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11996ed0897cSRob Clark 120005b84911SRob Clark return obj; 120105b84911SRob Clark 120205b84911SRob Clark fail: 1203f7d33950SEmil Velikov drm_gem_object_put(obj); 120405b84911SRob Clark return ERR_PTR(ret); 120505b84911SRob Clark } 120605b84911SRob Clark 120705b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 120879f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 120905b84911SRob Clark { 12103cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 121105b84911SRob Clark struct msm_gem_object *msm_obj; 121205b84911SRob Clark struct drm_gem_object *obj; 121379f0e202SRob Clark uint32_t size; 121405b84911SRob Clark int ret, npages; 121505b84911SRob Clark 1216871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1217c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12186a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1219871d812aSRob Clark return ERR_PTR(-EINVAL); 1220871d812aSRob Clark } 1221871d812aSRob Clark 122279f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 122305b84911SRob Clark 12243cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 122505b84911SRob Clark if (ret) 12262203bd0eSDan Carpenter return ERR_PTR(ret); 122705b84911SRob Clark 122805b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 122905b84911SRob Clark 123005b84911SRob Clark npages = size / PAGE_SIZE; 123105b84911SRob Clark 123205b84911SRob Clark msm_obj = to_msm_bo(obj); 1233a6ae74c9SRob Clark msm_gem_lock(obj); 123405b84911SRob Clark msm_obj->sgt = sgt; 12352098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 123605b84911SRob Clark if (!msm_obj->pages) { 1237a6ae74c9SRob Clark msm_gem_unlock(obj); 123805b84911SRob Clark ret = -ENOMEM; 123905b84911SRob Clark goto fail; 124005b84911SRob Clark } 124105b84911SRob Clark 1242c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12430e08270aSSushmita Susheelendra if (ret) { 1244a6ae74c9SRob Clark msm_gem_unlock(obj); 124505b84911SRob Clark goto fail; 12460e08270aSSushmita Susheelendra } 124705b84911SRob Clark 1248a6ae74c9SRob Clark msm_gem_unlock(obj); 12493cbdc8d8SAkhil P Oommen 1250d984457bSRob Clark mutex_lock(&priv->mm_lock); 125164fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1252d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12533cbdc8d8SAkhil P Oommen 12546ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12556ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12566ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12576ed0897cSRob Clark 1258c8afe684SRob Clark return obj; 1259c8afe684SRob Clark 1260c8afe684SRob Clark fail: 1261f7d33950SEmil Velikov drm_gem_object_put(obj); 1262c8afe684SRob Clark return ERR_PTR(ret); 1263c8afe684SRob Clark } 12648223286dSJordan Crouse 1265030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12668223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1267030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12688223286dSJordan Crouse { 12698223286dSJordan Crouse void *vaddr; 1270030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12718223286dSJordan Crouse int ret; 12728223286dSJordan Crouse 12738223286dSJordan Crouse if (IS_ERR(obj)) 12748223286dSJordan Crouse return ERR_CAST(obj); 12758223286dSJordan Crouse 12768223286dSJordan Crouse if (iova) { 12779fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 127893f7abf1SJordan Crouse if (ret) 127993f7abf1SJordan Crouse goto err; 12808223286dSJordan Crouse } 12818223286dSJordan Crouse 12828223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1283c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12847ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 128593f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 128693f7abf1SJordan Crouse goto err; 12878223286dSJordan Crouse } 12888223286dSJordan Crouse 12898223286dSJordan Crouse if (bo) 12908223286dSJordan Crouse *bo = obj; 12918223286dSJordan Crouse 12928223286dSJordan Crouse return vaddr; 129393f7abf1SJordan Crouse err: 1294f7d33950SEmil Velikov drm_gem_object_put(obj); 129593f7abf1SJordan Crouse 129693f7abf1SJordan Crouse return ERR_PTR(ret); 129793f7abf1SJordan Crouse 12988223286dSJordan Crouse } 12998223286dSJordan Crouse 13001e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1301030af2b0SRob Clark struct msm_gem_address_space *aspace) 13021e29dff0SJordan Crouse { 13031e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13041e29dff0SJordan Crouse return; 13051e29dff0SJordan Crouse 13061e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13077ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1308f7d33950SEmil Velikov drm_gem_object_put(bo); 13091e29dff0SJordan Crouse } 13100815d774SJordan Crouse 13110815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13120815d774SJordan Crouse { 13130815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13140815d774SJordan Crouse va_list ap; 13150815d774SJordan Crouse 13160815d774SJordan Crouse if (!fmt) 13170815d774SJordan Crouse return; 13180815d774SJordan Crouse 13190815d774SJordan Crouse va_start(ap, fmt); 13200815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13210815d774SJordan Crouse va_end(ap); 13220815d774SJordan Crouse } 1323