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 180*e7cd5ee9SRob 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 185*e7cd5ee9SRob 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)) { 19310f76165SRob Clark msm_obj->pin_count++; 194901df24dSRob Clark update_lru(obj); 19510f76165SRob Clark } 19610f76165SRob Clark 19705b84911SRob Clark return p; 19805b84911SRob Clark } 19905b84911SRob Clark 200*e7cd5ee9SRob Clark struct page **msm_gem_pin_pages(struct drm_gem_object *obj) 201*e7cd5ee9SRob Clark { 202*e7cd5ee9SRob Clark struct page **p; 203*e7cd5ee9SRob Clark 204*e7cd5ee9SRob Clark msm_gem_lock(obj); 205*e7cd5ee9SRob Clark p = msm_gem_pin_pages_locked(obj); 206*e7cd5ee9SRob Clark msm_gem_unlock(obj); 207*e7cd5ee9SRob Clark 208*e7cd5ee9SRob Clark return p; 209*e7cd5ee9SRob Clark } 210*e7cd5ee9SRob Clark 211*e7cd5ee9SRob 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); 21610f76165SRob Clark msm_obj->pin_count--; 21710f76165SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 218901df24dSRob Clark update_lru(obj); 21910f76165SRob Clark msm_gem_unlock(obj); 22005b84911SRob Clark } 22105b84911SRob Clark 222af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 223af9b3547SJonathan Marek { 2248b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 225af9b3547SJonathan Marek return pgprot_writecombine(prot); 226af9b3547SJonathan Marek return prot; 227af9b3547SJonathan Marek } 228af9b3547SJonathan Marek 2293c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 230c8afe684SRob Clark { 23111bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 232c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2330e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 234c8afe684SRob Clark struct page **pages; 235c8afe684SRob Clark unsigned long pfn; 236c8afe684SRob Clark pgoff_t pgoff; 237a5f74ec7SSouptick Joarder int err; 238a5f74ec7SSouptick Joarder vm_fault_t ret; 239c8afe684SRob Clark 2400e08270aSSushmita Susheelendra /* 2410e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2420e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 243d78d383aSRob Clark */ 244a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 245a5f74ec7SSouptick Joarder if (err) { 246a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 247c8afe684SRob Clark goto out; 248a5f74ec7SSouptick Joarder } 249c8afe684SRob Clark 25090643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 251a6ae74c9SRob Clark msm_gem_unlock(obj); 2520e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2530e08270aSSushmita Susheelendra } 2540e08270aSSushmita Susheelendra 255c8afe684SRob Clark /* make sure we have pages attached now */ 256c8afe684SRob Clark pages = get_pages(obj); 257c8afe684SRob Clark if (IS_ERR(pages)) { 258a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 259c8afe684SRob Clark goto out_unlock; 260c8afe684SRob Clark } 261c8afe684SRob Clark 262c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2631a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 264c8afe684SRob Clark 265871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 266c8afe684SRob Clark 2671a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 268c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 269c8afe684SRob Clark 2708246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 2718246913aSRob Clark 272c8afe684SRob Clark out_unlock: 273a6ae74c9SRob Clark msm_gem_unlock(obj); 274c8afe684SRob Clark out: 275a5f74ec7SSouptick Joarder return ret; 276c8afe684SRob Clark } 277c8afe684SRob Clark 278c8afe684SRob Clark /** get mmap offset */ 279c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 280c8afe684SRob Clark { 281c8afe684SRob Clark struct drm_device *dev = obj->dev; 282c8afe684SRob Clark int ret; 283c8afe684SRob Clark 28490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 285c8afe684SRob Clark 286c8afe684SRob Clark /* Make it mmapable */ 287c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 288c8afe684SRob Clark 289c8afe684SRob Clark if (ret) { 2906a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 291c8afe684SRob Clark return 0; 292c8afe684SRob Clark } 293c8afe684SRob Clark 294c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 295c8afe684SRob Clark } 296c8afe684SRob Clark 297c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 298c8afe684SRob Clark { 299c8afe684SRob Clark uint64_t offset; 3000e08270aSSushmita Susheelendra 301a6ae74c9SRob Clark msm_gem_lock(obj); 302c8afe684SRob Clark offset = mmap_offset(obj); 303a6ae74c9SRob Clark msm_gem_unlock(obj); 304c8afe684SRob Clark return offset; 305c8afe684SRob Clark } 306c8afe684SRob Clark 3074b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3084b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3094b85f7f5SRob Clark { 3104b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3114b85f7f5SRob Clark struct msm_gem_vma *vma; 3124b85f7f5SRob Clark 31390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3140e08270aSSushmita Susheelendra 3154b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3164b85f7f5SRob Clark if (!vma) 3174b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3184b85f7f5SRob Clark 3194b85f7f5SRob Clark vma->aspace = aspace; 3204b85f7f5SRob Clark 3214b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3224b85f7f5SRob Clark 3234b85f7f5SRob Clark return vma; 3244b85f7f5SRob Clark } 3254b85f7f5SRob Clark 3264b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3274b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3284b85f7f5SRob Clark { 3294b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3304b85f7f5SRob Clark struct msm_gem_vma *vma; 3314b85f7f5SRob Clark 33290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3334b85f7f5SRob Clark 3344b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3354b85f7f5SRob Clark if (vma->aspace == aspace) 3364b85f7f5SRob Clark return vma; 3374b85f7f5SRob Clark } 3384b85f7f5SRob Clark 3394b85f7f5SRob Clark return NULL; 3404b85f7f5SRob Clark } 3414b85f7f5SRob Clark 3424b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3434b85f7f5SRob Clark { 3444b85f7f5SRob Clark if (!vma) 3454b85f7f5SRob Clark return; 3464b85f7f5SRob Clark 3474b85f7f5SRob Clark list_del(&vma->list); 3484b85f7f5SRob Clark kfree(vma); 3494b85f7f5SRob Clark } 3504b85f7f5SRob Clark 35137c68900SLee Jones /* 35220d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 35320d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 35420d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 35520d0ae2fSRob Clark * mapping. 35620d0ae2fSRob Clark */ 3574fe5f65eSRob Clark static void 35820d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3594fe5f65eSRob Clark { 3604fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3619b73bde3SIskren Chernev struct msm_gem_vma *vma; 3624fe5f65eSRob Clark 36390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3644fe5f65eSRob Clark 3659b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 366d67f1b6dSBrian Masney if (vma->aspace) { 3677ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 36820d0ae2fSRob Clark if (close) 3697ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 370d67f1b6dSBrian Masney } 3719b73bde3SIskren Chernev } 3729b73bde3SIskren Chernev } 3739b73bde3SIskren Chernev 3749b73bde3SIskren Chernev /* Called with msm_obj locked */ 3759b73bde3SIskren Chernev static void 3769b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3774fe5f65eSRob Clark { 3784fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3794fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3804fe5f65eSRob Clark 38190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3824fe5f65eSRob Clark 3834fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3844b85f7f5SRob Clark del_vma(vma); 3854fe5f65eSRob Clark } 3864fe5f65eSRob Clark } 3874fe5f65eSRob Clark 388522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 389522f1abfSRob Clark struct msm_gem_address_space *aspace, 390d3b8877eSJonathan Marek u64 range_start, u64 range_end) 391c8afe684SRob Clark { 3924b85f7f5SRob Clark struct msm_gem_vma *vma; 393c8afe684SRob Clark 39490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 395cb1e3818SRob Clark 3964b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 397871d812aSRob Clark 3984b85f7f5SRob Clark if (!vma) { 399522f1abfSRob Clark int ret; 400522f1abfSRob Clark 4014b85f7f5SRob Clark vma = add_vma(obj, aspace); 402c0ee9794SJordan Crouse if (IS_ERR(vma)) 403522f1abfSRob Clark return vma; 4044b85f7f5SRob Clark 4052ee4b5d2SRob Clark ret = msm_gem_init_vma(aspace, vma, obj->size, 406d3b8877eSJonathan Marek range_start, range_end); 407c0ee9794SJordan Crouse if (ret) { 408c0ee9794SJordan Crouse del_vma(vma); 409522f1abfSRob Clark return ERR_PTR(ret); 410c8afe684SRob Clark } 411522f1abfSRob Clark } else { 412522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 413522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4144b85f7f5SRob Clark } 4154b85f7f5SRob Clark 416522f1abfSRob Clark return vma; 417c0ee9794SJordan Crouse } 4184b85f7f5SRob Clark 41927674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 420c0ee9794SJordan Crouse { 421c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 422c0ee9794SJordan Crouse struct page **pages; 42364fcbde7SRob Clark int ret, prot = IOMMU_READ; 424bbc2cd07SRob Clark 425bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 426bbc2cd07SRob Clark prot |= IOMMU_WRITE; 427c0ee9794SJordan Crouse 4280b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4290b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4300b462d7aSJonathan Marek 431d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 432d12e3390SJonathan Marek prot |= IOMMU_CACHE; 433d12e3390SJonathan Marek 43490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 435c0ee9794SJordan Crouse 43690643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 437c0ee9794SJordan Crouse return -EBUSY; 438c0ee9794SJordan Crouse 439c0ee9794SJordan Crouse pages = get_pages(obj); 440c0ee9794SJordan Crouse if (IS_ERR(pages)) 441c0ee9794SJordan Crouse return PTR_ERR(pages); 442c0ee9794SJordan Crouse 443522f1abfSRob Clark ret = msm_gem_map_vma(vma->aspace, vma, prot, msm_obj->sgt, obj->size); 44464fcbde7SRob Clark 44564fcbde7SRob Clark if (!ret) 44664fcbde7SRob Clark msm_obj->pin_count++; 44764fcbde7SRob Clark 44864fcbde7SRob Clark return ret; 449c0ee9794SJordan Crouse } 450c0ee9794SJordan Crouse 451311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 45227674c66SRob Clark { 45327674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 45427674c66SRob Clark 45527674c66SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 45627674c66SRob Clark 45727674c66SRob Clark msm_obj->pin_count--; 45827674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 45927674c66SRob Clark 460901df24dSRob Clark update_lru(obj); 46127674c66SRob Clark } 46227674c66SRob Clark 46327674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 46427674c66SRob Clark struct msm_gem_address_space *aspace) 46527674c66SRob Clark { 46627674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 46727674c66SRob Clark } 46827674c66SRob Clark 469e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 470d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 471d3b8877eSJonathan Marek u64 range_start, u64 range_end) 472c0ee9794SJordan Crouse { 473522f1abfSRob Clark struct msm_gem_vma *vma; 474c0ee9794SJordan Crouse int ret; 475c0ee9794SJordan Crouse 47690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 477c0ee9794SJordan Crouse 478522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 479522f1abfSRob Clark if (IS_ERR(vma)) 480522f1abfSRob Clark return PTR_ERR(vma); 481c0ee9794SJordan Crouse 48227674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 483c0ee9794SJordan Crouse if (!ret) 484522f1abfSRob Clark *iova = vma->iova; 485c0ee9794SJordan Crouse 486c8afe684SRob Clark return ret; 487c8afe684SRob Clark } 488c8afe684SRob Clark 489e4b87d22SRob Clark /* 490e4b87d22SRob Clark * get iova and pin it. Should have a matching put 491e4b87d22SRob Clark * limits iova to specified range (in pages) 492e4b87d22SRob Clark */ 493e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 494e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 495e4b87d22SRob Clark u64 range_start, u64 range_end) 496e4b87d22SRob Clark { 497e4b87d22SRob Clark int ret; 498e4b87d22SRob Clark 499e4b87d22SRob Clark msm_gem_lock(obj); 500e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 501e4b87d22SRob Clark msm_gem_unlock(obj); 502e4b87d22SRob Clark 503e4b87d22SRob Clark return ret; 504e4b87d22SRob Clark } 505e4b87d22SRob Clark 506d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 507d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 508d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 509d3b8877eSJonathan Marek { 510d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 511d3b8877eSJonathan Marek } 512d3b8877eSJonathan Marek 5137ad0e8cfSJordan Crouse /* 5147ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5157ad0e8cfSJordan Crouse * valid for the life of the object 5167ad0e8cfSJordan Crouse */ 5179fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5189fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5199fe041f6SJordan Crouse { 520522f1abfSRob Clark struct msm_gem_vma *vma; 521522f1abfSRob Clark int ret = 0; 5229fe041f6SJordan Crouse 523a6ae74c9SRob Clark msm_gem_lock(obj); 524522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 525522f1abfSRob Clark if (IS_ERR(vma)) { 526522f1abfSRob Clark ret = PTR_ERR(vma); 527522f1abfSRob Clark } else { 528522f1abfSRob Clark *iova = vma->iova; 529522f1abfSRob Clark } 530a6ae74c9SRob Clark msm_gem_unlock(obj); 5319fe041f6SJordan Crouse 5329fe041f6SJordan Crouse return ret; 5339fe041f6SJordan Crouse } 5349fe041f6SJordan Crouse 535a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 5368bdcd949SRob Clark struct msm_gem_address_space *aspace) 5372638d90aSRob Clark { 538a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 5394b85f7f5SRob Clark 540a636a0ffSRob Clark if (!vma) 541a636a0ffSRob Clark return 0; 5424b85f7f5SRob Clark 543a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 544a636a0ffSRob Clark return -EBUSY; 545a636a0ffSRob Clark 546a636a0ffSRob Clark msm_gem_purge_vma(vma->aspace, vma); 547a636a0ffSRob Clark msm_gem_close_vma(vma->aspace, vma); 548a636a0ffSRob Clark del_vma(vma); 549a636a0ffSRob Clark 550a636a0ffSRob Clark return 0; 5512638d90aSRob Clark } 5522638d90aSRob Clark 5537ad0e8cfSJordan Crouse /* 554a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 555a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 556a636a0ffSRob Clark * the life of the object. 557a636a0ffSRob Clark * 558a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 559e4b87d22SRob Clark */ 560a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 561a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 562e4b87d22SRob Clark { 563a636a0ffSRob Clark int ret = 0; 564a636a0ffSRob Clark 565a636a0ffSRob Clark msm_gem_lock(obj); 566a636a0ffSRob Clark if (!iova) { 567a636a0ffSRob Clark ret = clear_iova(obj, aspace); 568a636a0ffSRob Clark } else { 569e4b87d22SRob Clark struct msm_gem_vma *vma; 570a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 571a636a0ffSRob Clark if (IS_ERR(vma)) { 572a636a0ffSRob Clark ret = PTR_ERR(vma); 573a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 574a636a0ffSRob Clark clear_iova(obj, aspace); 575a636a0ffSRob Clark ret = -EBUSY; 57664fcbde7SRob Clark } 577e4b87d22SRob Clark } 578a636a0ffSRob Clark msm_gem_unlock(obj); 579a636a0ffSRob Clark 580a636a0ffSRob Clark return ret; 581a636a0ffSRob Clark } 582e4b87d22SRob Clark 583e4b87d22SRob Clark /* 5847ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5857ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5867ad0e8cfSJordan Crouse * to get rid of it 5877ad0e8cfSJordan Crouse */ 5887ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5898bdcd949SRob Clark struct msm_gem_address_space *aspace) 590c8afe684SRob Clark { 59127674c66SRob Clark struct msm_gem_vma *vma; 59227674c66SRob Clark 593a6ae74c9SRob Clark msm_gem_lock(obj); 59427674c66SRob Clark vma = lookup_vma(obj, aspace); 59527674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 596311e03c2SRob Clark msm_gem_unpin_vma(vma); 597311e03c2SRob Clark msm_gem_unpin_locked(obj); 59827674c66SRob Clark } 599a6ae74c9SRob Clark msm_gem_unlock(obj); 600c8afe684SRob Clark } 601c8afe684SRob Clark 602c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 603c8afe684SRob Clark struct drm_mode_create_dumb *args) 604c8afe684SRob Clark { 605c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 606c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 607c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 6080815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 609c8afe684SRob Clark } 610c8afe684SRob Clark 611c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 612c8afe684SRob Clark uint32_t handle, uint64_t *offset) 613c8afe684SRob Clark { 614c8afe684SRob Clark struct drm_gem_object *obj; 615c8afe684SRob Clark int ret = 0; 616c8afe684SRob Clark 617c8afe684SRob Clark /* GEM does all our handle to object mapping */ 618a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 619c8afe684SRob Clark if (obj == NULL) { 620c8afe684SRob Clark ret = -ENOENT; 621c8afe684SRob Clark goto fail; 622c8afe684SRob Clark } 623c8afe684SRob Clark 624c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 625c8afe684SRob Clark 626f7d33950SEmil Velikov drm_gem_object_put(obj); 627c8afe684SRob Clark 628c8afe684SRob Clark fail: 629c8afe684SRob Clark return ret; 630c8afe684SRob Clark } 631c8afe684SRob Clark 632fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 633c8afe684SRob Clark { 6340e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6350e08270aSSushmita Susheelendra int ret = 0; 6360e08270aSSushmita Susheelendra 63790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 638e4b87d22SRob Clark 6398b6b7d84SDaniel Vetter if (obj->import_attach) 6408b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6418b6b7d84SDaniel Vetter 64290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6436a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 644fad33f4bSRob Clark msm_obj->madv, madv); 6450e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 646c8afe684SRob Clark } 647c8afe684SRob Clark 6480e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 649a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6500e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6510e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 652a6ae74c9SRob Clark * hold msm_obj lock) 6530e08270aSSushmita Susheelendra */ 6540e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6550e08270aSSushmita Susheelendra 6560e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6570e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6580e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6590e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6600e08270aSSushmita Susheelendra goto fail; 6610e08270aSSushmita Susheelendra } 6620e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 663af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6640e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6650e08270aSSushmita Susheelendra ret = -ENOMEM; 6660e08270aSSushmita Susheelendra goto fail; 6670e08270aSSushmita Susheelendra } 66810f76165SRob Clark 669901df24dSRob Clark update_lru(obj); 6700e08270aSSushmita Susheelendra } 6710e08270aSSushmita Susheelendra 6720e08270aSSushmita Susheelendra return msm_obj->vaddr; 6730e08270aSSushmita Susheelendra 6740e08270aSSushmita Susheelendra fail: 675e1e9db2cSRob Clark msm_obj->vmap_count--; 6760e08270aSSushmita Susheelendra return ERR_PTR(ret); 67718f23049SRob Clark } 67818f23049SRob Clark 679e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 680e4b87d22SRob Clark { 681e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 682e4b87d22SRob Clark } 683e4b87d22SRob Clark 684fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 685fad33f4bSRob Clark { 686e4b87d22SRob Clark void *ret; 687e4b87d22SRob Clark 688e4b87d22SRob Clark msm_gem_lock(obj); 689e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 690e4b87d22SRob Clark msm_gem_unlock(obj); 691e4b87d22SRob Clark 692e4b87d22SRob Clark return ret; 693fad33f4bSRob Clark } 694fad33f4bSRob Clark 695fad33f4bSRob Clark /* 696fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 697fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 698fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 699fad33f4bSRob Clark * active list. 700fad33f4bSRob Clark */ 701fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 702fad33f4bSRob Clark { 703fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 704fad33f4bSRob Clark } 705fad33f4bSRob Clark 706e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 70718f23049SRob Clark { 7080e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7090e08270aSSushmita Susheelendra 71090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 71190643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 712e4b87d22SRob Clark 7130e08270aSSushmita Susheelendra msm_obj->vmap_count--; 7144cd33c48SRob Clark } 7150e08270aSSushmita Susheelendra 7160e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7174cd33c48SRob Clark { 718a6ae74c9SRob Clark msm_gem_lock(obj); 719e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 720a6ae74c9SRob Clark msm_gem_unlock(obj); 7214cd33c48SRob Clark } 7224cd33c48SRob Clark 7234cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7244cd33c48SRob Clark * false or -errno. 7254cd33c48SRob Clark */ 7264cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7274cd33c48SRob Clark { 7284cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 72968209390SRob Clark 730a6ae74c9SRob Clark msm_gem_lock(obj); 731c8afe684SRob Clark 732c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 733c8afe684SRob Clark msm_obj->madv = madv; 734c8afe684SRob Clark 7350e08270aSSushmita Susheelendra madv = msm_obj->madv; 7360e08270aSSushmita Susheelendra 7373edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7383edfa30fSRob Clark * between inactive lists 7393edfa30fSRob Clark */ 7403edfa30fSRob Clark if (msm_obj->active_count == 0) 741901df24dSRob Clark update_lru(obj); 7423edfa30fSRob Clark 743a6ae74c9SRob Clark msm_gem_unlock(obj); 7440e08270aSSushmita Susheelendra 7450e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 746c8afe684SRob Clark } 747c8afe684SRob Clark 748599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 74968209390SRob Clark { 75068209390SRob Clark struct drm_device *dev = obj->dev; 75168209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 75268209390SRob Clark 75381d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 75490643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 75568209390SRob Clark 75620d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 75720d0ae2fSRob Clark put_iova_spaces(obj, true); 7580e08270aSSushmita Susheelendra 759599089c6SRob Clark msm_gem_vunmap(obj); 76068209390SRob Clark 76181d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 76281d4d597SRob Clark 76368209390SRob Clark put_pages(obj); 76468209390SRob Clark 7659b73bde3SIskren Chernev put_iova_vmas(obj); 7669b73bde3SIskren Chernev 76768209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 768901df24dSRob Clark update_lru(obj); 76968209390SRob Clark 77068209390SRob Clark drm_gem_free_mmap_offset(obj); 77168209390SRob Clark 77268209390SRob Clark /* Our goal here is to return as much of the memory as 77368209390SRob Clark * is possible back to the system as we are called from OOM. 77468209390SRob Clark * To do this we must instruct the shmfs to drop all of its 77568209390SRob Clark * backing pages, *now*. 77668209390SRob Clark */ 77768209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 77868209390SRob Clark 77968209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 78068209390SRob Clark 0, (loff_t)-1); 78168209390SRob Clark } 78268209390SRob Clark 78337c68900SLee Jones /* 78463f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 78563f17ef8SRob Clark */ 78663f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 78763f17ef8SRob Clark { 78863f17ef8SRob Clark struct drm_device *dev = obj->dev; 78963f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 79063f17ef8SRob Clark 79163f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 79263f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 79363f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 79463f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 79563f17ef8SRob Clark 79663f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 79763f17ef8SRob Clark put_iova_spaces(obj, false); 79863f17ef8SRob Clark 79963f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 80063f17ef8SRob Clark 80163f17ef8SRob Clark put_pages(obj); 80263f17ef8SRob Clark 803901df24dSRob Clark update_lru(obj); 80463f17ef8SRob Clark } 80563f17ef8SRob Clark 806599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 807e1e9db2cSRob Clark { 808e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 809e1e9db2cSRob Clark 81090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8110e08270aSSushmita Susheelendra 81290643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 813e1e9db2cSRob Clark return; 814e1e9db2cSRob Clark 815e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 816e1e9db2cSRob Clark msm_obj->vaddr = NULL; 817e1e9db2cSRob Clark } 818e1e9db2cSRob Clark 8199d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 8207198e6b0SRob Clark { 8217198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 822d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 823d984457bSRob Clark 824d984457bSRob Clark might_sleep(); 82590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 82690643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 82790643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 8289d8baa2bSAkhil P Oommen 829ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 830d984457bSRob Clark mutex_lock(&priv->mm_lock); 83164fcbde7SRob Clark if (msm_obj->evictable) 83264fcbde7SRob Clark mark_unevictable(msm_obj); 833a83cc4fbSBaokun Li list_move_tail(&msm_obj->mm_list, &gpu->active_list); 834d984457bSRob Clark mutex_unlock(&priv->mm_lock); 8357198e6b0SRob Clark } 8369d8baa2bSAkhil P Oommen } 8377198e6b0SRob Clark 8389d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8397198e6b0SRob Clark { 8407198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8417198e6b0SRob Clark 842d984457bSRob Clark might_sleep(); 84390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8447198e6b0SRob Clark 845ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 846901df24dSRob Clark update_lru(obj); 8477198e6b0SRob Clark } 8489d8baa2bSAkhil P Oommen } 8497198e6b0SRob Clark 850901df24dSRob Clark static void update_lru(struct drm_gem_object *obj) 8513edfa30fSRob Clark { 852901df24dSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 853901df24dSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8543edfa30fSRob Clark 85564fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 85664fcbde7SRob Clark 85764fcbde7SRob Clark if (msm_obj->active_count != 0) 85864fcbde7SRob Clark return; 85964fcbde7SRob Clark 8603edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8613edfa30fSRob Clark 862cc8a4d5aSRob Clark if (msm_obj->dontneed) 8630054eeb7SRob Clark mark_unpurgeable(msm_obj); 86464fcbde7SRob Clark if (msm_obj->evictable) 86564fcbde7SRob Clark mark_unevictable(msm_obj); 866cc8a4d5aSRob Clark 867cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 86864fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8693edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 87064fcbde7SRob Clark mark_evictable(msm_obj); 871cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8723edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8730054eeb7SRob Clark mark_purgeable(msm_obj); 874cc8a4d5aSRob Clark } else { 87564fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 87664fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 877cc8a4d5aSRob Clark } 8783edfa30fSRob Clark 8793edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8803edfa30fSRob Clark } 8813edfa30fSRob Clark 88201780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 88301780d02SRob Clark { 88401780d02SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 88501780d02SRob Clark 88601780d02SRob Clark if (to_msm_bo(obj)->pin_count) 88701780d02SRob Clark return true; 88801780d02SRob Clark 88901780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 89001780d02SRob Clark } 89101780d02SRob Clark 892ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 893ba00c3f2SRob Clark { 894b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 895f755e227SChris Wilson unsigned long remain = 896f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 897f755e227SChris Wilson long ret; 898b6295f9aSRob Clark 8997bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 9007bc80a54SChristian König true, remain); 901f755e227SChris Wilson if (ret == 0) 902f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 903f755e227SChris Wilson else if (ret < 0) 904f755e227SChris Wilson return ret; 905ba00c3f2SRob Clark 9067198e6b0SRob Clark /* TODO cache maintenance */ 9077198e6b0SRob Clark 908b6295f9aSRob Clark return 0; 9097198e6b0SRob Clark } 9107198e6b0SRob Clark 9117198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 9127198e6b0SRob Clark { 9137198e6b0SRob Clark /* TODO cache maintenance */ 914c8afe684SRob Clark return 0; 915c8afe684SRob Clark } 916c8afe684SRob Clark 917c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 918528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 919528107c8SRob Clark struct msm_gem_stats *stats) 920c8afe684SRob Clark { 921c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 92252791eeeSChristian König struct dma_resv *robj = obj->resv; 9234b85f7f5SRob Clark struct msm_gem_vma *vma; 924c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9254cd33c48SRob Clark const char *madv; 926c8afe684SRob Clark 927a6ae74c9SRob Clark msm_gem_lock(obj); 928b6295f9aSRob Clark 929528107c8SRob Clark stats->all.count++; 930528107c8SRob Clark stats->all.size += obj->size; 931528107c8SRob Clark 932528107c8SRob Clark if (is_active(msm_obj)) { 933528107c8SRob Clark stats->active.count++; 934528107c8SRob Clark stats->active.size += obj->size; 935528107c8SRob Clark } 936528107c8SRob Clark 937f48f3563SRob Clark if (msm_obj->pages) { 938f48f3563SRob Clark stats->resident.count++; 939f48f3563SRob Clark stats->resident.size += obj->size; 940f48f3563SRob Clark } 941f48f3563SRob Clark 9424cd33c48SRob Clark switch (msm_obj->madv) { 9434cd33c48SRob Clark case __MSM_MADV_PURGED: 944528107c8SRob Clark stats->purged.count++; 945528107c8SRob Clark stats->purged.size += obj->size; 9464cd33c48SRob Clark madv = " purged"; 9474cd33c48SRob Clark break; 9484cd33c48SRob Clark case MSM_MADV_DONTNEED: 9490054eeb7SRob Clark stats->purgeable.count++; 9500054eeb7SRob Clark stats->purgeable.size += obj->size; 9514cd33c48SRob Clark madv = " purgeable"; 9524cd33c48SRob Clark break; 9534cd33c48SRob Clark case MSM_MADV_WILLNEED: 9544cd33c48SRob Clark default: 9554cd33c48SRob Clark madv = ""; 9564cd33c48SRob Clark break; 9574cd33c48SRob Clark } 9584cd33c48SRob Clark 959575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9607198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9612c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 962667ce33eSRob Clark off, msm_obj->vaddr); 963667ce33eSRob Clark 9640815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 965667ce33eSRob Clark 966575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 967575f0485SJordan Crouse 968575f0485SJordan Crouse seq_puts(m, " vmas:"); 969575f0485SJordan Crouse 97025faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 97125faf2f2SRob Clark const char *name, *comm; 97225faf2f2SRob Clark if (vma->aspace) { 97325faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 97425faf2f2SRob Clark struct task_struct *task = 97525faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 97625faf2f2SRob Clark if (task) { 97725faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 978ac3e4f42SRob Clark put_task_struct(task); 97925faf2f2SRob Clark } else { 98025faf2f2SRob Clark comm = NULL; 98125faf2f2SRob Clark } 98225faf2f2SRob Clark name = aspace->name; 98325faf2f2SRob Clark } else { 98425faf2f2SRob Clark name = comm = NULL; 98525faf2f2SRob Clark } 98625faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 98725faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 98825faf2f2SRob Clark vma->aspace, vma->iova, 98925faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 990ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 99125faf2f2SRob Clark kfree(comm); 99225faf2f2SRob Clark } 993575f0485SJordan Crouse 994575f0485SJordan Crouse seq_puts(m, "\n"); 995575f0485SJordan Crouse } 996b6295f9aSRob Clark 997f19ee2f3SChristian König dma_resv_describe(robj, m); 998a6ae74c9SRob Clark msm_gem_unlock(obj); 999c8afe684SRob Clark } 1000c8afe684SRob Clark 1001c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 1002c8afe684SRob Clark { 1003528107c8SRob Clark struct msm_gem_stats stats = {}; 1004c8afe684SRob Clark struct msm_gem_object *msm_obj; 1005c8afe684SRob Clark 10060815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 10076ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 1008c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 1009575f0485SJordan Crouse seq_puts(m, " "); 1010528107c8SRob Clark msm_gem_describe(obj, m, &stats); 1011c8afe684SRob Clark } 1012c8afe684SRob Clark 1013528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 1014528107c8SRob Clark stats.all.count, stats.all.size); 1015528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 1016528107c8SRob Clark stats.active.count, stats.active.size); 1017f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1018f48f3563SRob Clark stats.resident.count, stats.resident.size); 1019f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10200054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1021528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1022528107c8SRob Clark stats.purged.count, stats.purged.size); 1023c8afe684SRob Clark } 1024c8afe684SRob Clark #endif 1025c8afe684SRob Clark 1026030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 10276867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 1028c8afe684SRob Clark { 1029c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 103048e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 103148e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 103248e7f183SKristian H. Kristensen 10336ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10346ed0897cSRob Clark list_del(&msm_obj->node); 10356ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10366ed0897cSRob Clark 1037d984457bSRob Clark mutex_lock(&priv->mm_lock); 1038cc8a4d5aSRob Clark if (msm_obj->dontneed) 10390054eeb7SRob Clark mark_unpurgeable(msm_obj); 1040c8afe684SRob Clark list_del(&msm_obj->mm_list); 1041d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1042c8afe684SRob Clark 1043c8afe684SRob Clark /* object should not be on active list: */ 104490643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 1045c8afe684SRob Clark 104620d0ae2fSRob Clark put_iova_spaces(obj, true); 1047c8afe684SRob Clark 104805b84911SRob Clark if (obj->import_attach) { 104990643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 105005b84911SRob Clark 105105b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 105205b84911SRob Clark * ours, just free the array we allocated: 105305b84911SRob Clark */ 10542098105eSMichal Hocko kvfree(msm_obj->pages); 105505b84911SRob Clark 105657f04815SRob Clark put_iova_vmas(obj); 105757f04815SRob Clark 1058f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 105905b84911SRob Clark } else { 1060599089c6SRob Clark msm_gem_vunmap(obj); 1061c8afe684SRob Clark put_pages(obj); 106257f04815SRob Clark put_iova_vmas(obj); 106305b84911SRob Clark } 1064c8afe684SRob Clark 1065c8afe684SRob Clark drm_gem_object_release(obj); 1066c8afe684SRob Clark 1067c8afe684SRob Clark kfree(msm_obj); 1068c8afe684SRob Clark } 1069c8afe684SRob Clark 1070510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1071510410bfSThomas Zimmermann { 1072510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1073510410bfSThomas Zimmermann 10748246913aSRob Clark vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; 1075510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1076510410bfSThomas Zimmermann 1077510410bfSThomas Zimmermann return 0; 1078510410bfSThomas Zimmermann } 1079510410bfSThomas Zimmermann 1080c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1081c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10820815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10830815d774SJordan Crouse char *name) 1084c8afe684SRob Clark { 1085c8afe684SRob Clark struct drm_gem_object *obj; 1086c8afe684SRob Clark int ret; 1087c8afe684SRob Clark 1088c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1089c8afe684SRob Clark 1090c8afe684SRob Clark if (IS_ERR(obj)) 1091c8afe684SRob Clark return PTR_ERR(obj); 1092c8afe684SRob Clark 10930815d774SJordan Crouse if (name) 10940815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10950815d774SJordan Crouse 1096c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1097c8afe684SRob Clark 1098c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1099f7d33950SEmil Velikov drm_gem_object_put(obj); 1100c8afe684SRob Clark 1101c8afe684SRob Clark return ret; 1102c8afe684SRob Clark } 1103c8afe684SRob Clark 11043c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 11053c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 11063c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 11073c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 11083c9edd9cSThomas Zimmermann }; 11093c9edd9cSThomas Zimmermann 11103c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 11113c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11123c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11133c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11143c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11153c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11163c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1117510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 11183c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11193c9edd9cSThomas Zimmermann }; 11203c9edd9cSThomas Zimmermann 112105b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 112205b84911SRob Clark uint32_t size, uint32_t flags, 11233cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1124c8afe684SRob Clark { 1125d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1126c8afe684SRob Clark struct msm_gem_object *msm_obj; 1127c8afe684SRob Clark 1128c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1129c8afe684SRob Clark case MSM_BO_CACHED: 1130c8afe684SRob Clark case MSM_BO_WC: 1131c8afe684SRob Clark break; 1132d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1133d12e3390SJonathan Marek if (priv->has_cached_coherent) 1134d12e3390SJonathan Marek break; 1135e181ad43SGustavo A. R. Silva fallthrough; 1136c8afe684SRob Clark default: 11372d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1138c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 113905b84911SRob Clark return -EINVAL; 1140c8afe684SRob Clark } 1141c8afe684SRob Clark 1142667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 114305b84911SRob Clark if (!msm_obj) 114405b84911SRob Clark return -ENOMEM; 1145c8afe684SRob Clark 1146c8afe684SRob Clark msm_obj->flags = flags; 11474cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1148c8afe684SRob Clark 1149027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11504b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11514b85f7f5SRob Clark 115205b84911SRob Clark *obj = &msm_obj->base; 11533c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 115405b84911SRob Clark 115505b84911SRob Clark return 0; 115605b84911SRob Clark } 115705b84911SRob Clark 1158030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 115905b84911SRob Clark { 1160f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11613cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1162871d812aSRob Clark struct drm_gem_object *obj = NULL; 1163f4839bd5SRob Clark bool use_vram = false; 116405b84911SRob Clark int ret; 116505b84911SRob Clark 116605b84911SRob Clark size = PAGE_ALIGN(size); 116705b84911SRob Clark 1168c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1169f4839bd5SRob Clark use_vram = true; 117086f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1171f4839bd5SRob Clark use_vram = true; 1172f4839bd5SRob Clark 117390643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1174f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1175f4839bd5SRob Clark 11761a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11771a5dff5dSJordan Crouse * infrastructure grumpy 11781a5dff5dSJordan Crouse */ 11791a5dff5dSJordan Crouse if (size == 0) 11801a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11811a5dff5dSJordan Crouse 11823cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 118305b84911SRob Clark if (ret) 11842203bd0eSDan Carpenter return ERR_PTR(ret); 118505b84911SRob Clark 11863cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11873cbdc8d8SAkhil P Oommen 1188f4839bd5SRob Clark if (use_vram) { 11894b85f7f5SRob Clark struct msm_gem_vma *vma; 1190f4839bd5SRob Clark struct page **pages; 1191b3949a9aSHans Verkuil 1192a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1193a694ffedSIskren Chernev 1194a6ae74c9SRob Clark msm_gem_lock(obj); 1195f4839bd5SRob Clark 11964b85f7f5SRob Clark vma = add_vma(obj, NULL); 1197a6ae74c9SRob Clark msm_gem_unlock(obj); 11984b85f7f5SRob Clark if (IS_ERR(vma)) { 11994b85f7f5SRob Clark ret = PTR_ERR(vma); 12004b85f7f5SRob Clark goto fail; 12014b85f7f5SRob Clark } 12024b85f7f5SRob Clark 12034b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 12044b85f7f5SRob Clark 120545f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 120645f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 120745f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 120845f56690SAlexey Minnekhanov * mm_list to be empty. 120945f56690SAlexey Minnekhanov */ 121045f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 121145f56690SAlexey Minnekhanov 121207fcad0dSIskren Chernev msm_gem_lock(obj); 1213f4839bd5SRob Clark pages = get_pages(obj); 121407fcad0dSIskren Chernev msm_gem_unlock(obj); 1215f4839bd5SRob Clark if (IS_ERR(pages)) { 1216f4839bd5SRob Clark ret = PTR_ERR(pages); 1217f4839bd5SRob Clark goto fail; 1218f4839bd5SRob Clark } 12194b85f7f5SRob Clark 12204b85f7f5SRob Clark vma->iova = physaddr(obj); 1221f4839bd5SRob Clark } else { 122205b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 122305b84911SRob Clark if (ret) 122405b84911SRob Clark goto fail; 12250abdba47SLucas Stach /* 12260abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12270abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12280abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12290abdba47SLucas Stach * expected if you're going to pin these pages. 12300abdba47SLucas Stach */ 12310abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1232871d812aSRob Clark } 123305b84911SRob Clark 1234d984457bSRob Clark mutex_lock(&priv->mm_lock); 123564fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1236d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12373cbdc8d8SAkhil P Oommen 12386ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12396ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12406ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12416ed0897cSRob Clark 124205b84911SRob Clark return obj; 124305b84911SRob Clark 124405b84911SRob Clark fail: 1245f7d33950SEmil Velikov drm_gem_object_put(obj); 124605b84911SRob Clark return ERR_PTR(ret); 124705b84911SRob Clark } 124805b84911SRob Clark 124905b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 125079f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 125105b84911SRob Clark { 12523cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 125305b84911SRob Clark struct msm_gem_object *msm_obj; 125405b84911SRob Clark struct drm_gem_object *obj; 125579f0e202SRob Clark uint32_t size; 125605b84911SRob Clark int ret, npages; 125705b84911SRob Clark 1258871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1259c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12606a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1261871d812aSRob Clark return ERR_PTR(-EINVAL); 1262871d812aSRob Clark } 1263871d812aSRob Clark 126479f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 126505b84911SRob Clark 12663cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 126705b84911SRob Clark if (ret) 12682203bd0eSDan Carpenter return ERR_PTR(ret); 126905b84911SRob Clark 127005b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 127105b84911SRob Clark 127205b84911SRob Clark npages = size / PAGE_SIZE; 127305b84911SRob Clark 127405b84911SRob Clark msm_obj = to_msm_bo(obj); 1275a6ae74c9SRob Clark msm_gem_lock(obj); 127605b84911SRob Clark msm_obj->sgt = sgt; 12772098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 127805b84911SRob Clark if (!msm_obj->pages) { 1279a6ae74c9SRob Clark msm_gem_unlock(obj); 128005b84911SRob Clark ret = -ENOMEM; 128105b84911SRob Clark goto fail; 128205b84911SRob Clark } 128305b84911SRob Clark 1284c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12850e08270aSSushmita Susheelendra if (ret) { 1286a6ae74c9SRob Clark msm_gem_unlock(obj); 128705b84911SRob Clark goto fail; 12880e08270aSSushmita Susheelendra } 128905b84911SRob Clark 1290a6ae74c9SRob Clark msm_gem_unlock(obj); 12913cbdc8d8SAkhil P Oommen 1292d984457bSRob Clark mutex_lock(&priv->mm_lock); 129364fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1294d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12953cbdc8d8SAkhil P Oommen 12966ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12976ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12986ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12996ed0897cSRob Clark 1300c8afe684SRob Clark return obj; 1301c8afe684SRob Clark 1302c8afe684SRob Clark fail: 1303f7d33950SEmil Velikov drm_gem_object_put(obj); 1304c8afe684SRob Clark return ERR_PTR(ret); 1305c8afe684SRob Clark } 13068223286dSJordan Crouse 1307030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13088223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1309030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 13108223286dSJordan Crouse { 13118223286dSJordan Crouse void *vaddr; 1312030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 13138223286dSJordan Crouse int ret; 13148223286dSJordan Crouse 13158223286dSJordan Crouse if (IS_ERR(obj)) 13168223286dSJordan Crouse return ERR_CAST(obj); 13178223286dSJordan Crouse 13188223286dSJordan Crouse if (iova) { 13199fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 132093f7abf1SJordan Crouse if (ret) 132193f7abf1SJordan Crouse goto err; 13228223286dSJordan Crouse } 13238223286dSJordan Crouse 13248223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1325c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13267ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 132793f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 132893f7abf1SJordan Crouse goto err; 13298223286dSJordan Crouse } 13308223286dSJordan Crouse 13318223286dSJordan Crouse if (bo) 13328223286dSJordan Crouse *bo = obj; 13338223286dSJordan Crouse 13348223286dSJordan Crouse return vaddr; 133593f7abf1SJordan Crouse err: 1336f7d33950SEmil Velikov drm_gem_object_put(obj); 133793f7abf1SJordan Crouse 133893f7abf1SJordan Crouse return ERR_PTR(ret); 133993f7abf1SJordan Crouse 13408223286dSJordan Crouse } 13418223286dSJordan Crouse 13421e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1343030af2b0SRob Clark struct msm_gem_address_space *aspace) 13441e29dff0SJordan Crouse { 13451e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13461e29dff0SJordan Crouse return; 13471e29dff0SJordan Crouse 13481e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13497ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1350f7d33950SEmil Velikov drm_gem_object_put(bo); 13511e29dff0SJordan Crouse } 13520815d774SJordan Crouse 13530815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13540815d774SJordan Crouse { 13550815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13560815d774SJordan Crouse va_list ap; 13570815d774SJordan Crouse 13580815d774SJordan Crouse if (!fmt) 13590815d774SJordan Crouse return; 13600815d774SJordan Crouse 13610815d774SJordan Crouse va_start(ap, fmt); 13620815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13630815d774SJordan Crouse va_end(ap); 13640815d774SJordan Crouse } 1365