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 223edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_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 13564fcbde7SRob Clark update_inactive(msm_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 18005b84911SRob Clark struct page **msm_gem_get_pages(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 185a6ae74c9SRob Clark msm_gem_lock(obj); 1860e08270aSSushmita Susheelendra 18790643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 188a6ae74c9SRob Clark msm_gem_unlock(obj); 1890e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1900e08270aSSushmita Susheelendra } 1910e08270aSSushmita Susheelendra 19205b84911SRob Clark p = get_pages(obj); 19310f76165SRob Clark 19410f76165SRob Clark if (!IS_ERR(p)) { 19510f76165SRob Clark msm_obj->pin_count++; 19610f76165SRob Clark update_inactive(msm_obj); 19710f76165SRob Clark } 19810f76165SRob Clark 199a6ae74c9SRob Clark msm_gem_unlock(obj); 20005b84911SRob Clark return p; 20105b84911SRob Clark } 20205b84911SRob Clark 20305b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 20405b84911SRob Clark { 20510f76165SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 20610f76165SRob Clark 20710f76165SRob Clark msm_gem_lock(obj); 20810f76165SRob Clark msm_obj->pin_count--; 20910f76165SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 21010f76165SRob Clark update_inactive(msm_obj); 21110f76165SRob Clark msm_gem_unlock(obj); 21205b84911SRob Clark } 21305b84911SRob Clark 214af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 215af9b3547SJonathan Marek { 2168b5de735SRob Clark if (msm_obj->flags & MSM_BO_WC) 217af9b3547SJonathan Marek return pgprot_writecombine(prot); 218af9b3547SJonathan Marek return prot; 219af9b3547SJonathan Marek } 220af9b3547SJonathan Marek 2213c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 222c8afe684SRob Clark { 22311bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 224c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2250e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 226c8afe684SRob Clark struct page **pages; 227c8afe684SRob Clark unsigned long pfn; 228c8afe684SRob Clark pgoff_t pgoff; 229a5f74ec7SSouptick Joarder int err; 230a5f74ec7SSouptick Joarder vm_fault_t ret; 231c8afe684SRob Clark 2320e08270aSSushmita Susheelendra /* 2330e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2340e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 235d78d383aSRob Clark */ 236a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 237a5f74ec7SSouptick Joarder if (err) { 238a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 239c8afe684SRob Clark goto out; 240a5f74ec7SSouptick Joarder } 241c8afe684SRob Clark 24290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 243a6ae74c9SRob Clark msm_gem_unlock(obj); 2440e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2450e08270aSSushmita Susheelendra } 2460e08270aSSushmita Susheelendra 247c8afe684SRob Clark /* make sure we have pages attached now */ 248c8afe684SRob Clark pages = get_pages(obj); 249c8afe684SRob Clark if (IS_ERR(pages)) { 250a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 251c8afe684SRob Clark goto out_unlock; 252c8afe684SRob Clark } 253c8afe684SRob Clark 254c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2551a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 256c8afe684SRob Clark 257871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 258c8afe684SRob Clark 2591a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 260c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 261c8afe684SRob Clark 2628246913aSRob Clark ret = vmf_insert_pfn(vma, vmf->address, pfn); 2638246913aSRob Clark 264c8afe684SRob Clark out_unlock: 265a6ae74c9SRob Clark msm_gem_unlock(obj); 266c8afe684SRob Clark out: 267a5f74ec7SSouptick Joarder return ret; 268c8afe684SRob Clark } 269c8afe684SRob Clark 270c8afe684SRob Clark /** get mmap offset */ 271c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 272c8afe684SRob Clark { 273c8afe684SRob Clark struct drm_device *dev = obj->dev; 274c8afe684SRob Clark int ret; 275c8afe684SRob Clark 27690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 277c8afe684SRob Clark 278c8afe684SRob Clark /* Make it mmapable */ 279c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 280c8afe684SRob Clark 281c8afe684SRob Clark if (ret) { 2826a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 283c8afe684SRob Clark return 0; 284c8afe684SRob Clark } 285c8afe684SRob Clark 286c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 287c8afe684SRob Clark } 288c8afe684SRob Clark 289c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 290c8afe684SRob Clark { 291c8afe684SRob Clark uint64_t offset; 2920e08270aSSushmita Susheelendra 293a6ae74c9SRob Clark msm_gem_lock(obj); 294c8afe684SRob Clark offset = mmap_offset(obj); 295a6ae74c9SRob Clark msm_gem_unlock(obj); 296c8afe684SRob Clark return offset; 297c8afe684SRob Clark } 298c8afe684SRob Clark 2994b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3004b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3014b85f7f5SRob Clark { 3024b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3034b85f7f5SRob Clark struct msm_gem_vma *vma; 3044b85f7f5SRob Clark 30590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3060e08270aSSushmita Susheelendra 3074b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3084b85f7f5SRob Clark if (!vma) 3094b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3104b85f7f5SRob Clark 3114b85f7f5SRob Clark vma->aspace = aspace; 3124b85f7f5SRob Clark 3134b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3144b85f7f5SRob Clark 3154b85f7f5SRob Clark return vma; 3164b85f7f5SRob Clark } 3174b85f7f5SRob Clark 3184b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3194b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3204b85f7f5SRob Clark { 3214b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3224b85f7f5SRob Clark struct msm_gem_vma *vma; 3234b85f7f5SRob Clark 32490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3254b85f7f5SRob Clark 3264b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3274b85f7f5SRob Clark if (vma->aspace == aspace) 3284b85f7f5SRob Clark return vma; 3294b85f7f5SRob Clark } 3304b85f7f5SRob Clark 3314b85f7f5SRob Clark return NULL; 3324b85f7f5SRob Clark } 3334b85f7f5SRob Clark 3344b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3354b85f7f5SRob Clark { 3364b85f7f5SRob Clark if (!vma) 3374b85f7f5SRob Clark return; 3384b85f7f5SRob Clark 3394b85f7f5SRob Clark list_del(&vma->list); 3404b85f7f5SRob Clark kfree(vma); 3414b85f7f5SRob Clark } 3424b85f7f5SRob Clark 34337c68900SLee Jones /* 34420d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 34520d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 34620d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 34720d0ae2fSRob Clark * mapping. 34820d0ae2fSRob Clark */ 3494fe5f65eSRob Clark static void 35020d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3514fe5f65eSRob Clark { 3524fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3539b73bde3SIskren Chernev struct msm_gem_vma *vma; 3544fe5f65eSRob Clark 35590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3564fe5f65eSRob Clark 3579b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 358d67f1b6dSBrian Masney if (vma->aspace) { 3597ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 36020d0ae2fSRob Clark if (close) 3617ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 362d67f1b6dSBrian Masney } 3639b73bde3SIskren Chernev } 3649b73bde3SIskren Chernev } 3659b73bde3SIskren Chernev 3669b73bde3SIskren Chernev /* Called with msm_obj locked */ 3679b73bde3SIskren Chernev static void 3689b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3694fe5f65eSRob Clark { 3704fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3714fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3724fe5f65eSRob Clark 37390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3744fe5f65eSRob Clark 3754fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3764b85f7f5SRob Clark del_vma(vma); 3774fe5f65eSRob Clark } 3784fe5f65eSRob Clark } 3794fe5f65eSRob Clark 380522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 381522f1abfSRob Clark struct msm_gem_address_space *aspace, 382d3b8877eSJonathan Marek u64 range_start, u64 range_end) 383c8afe684SRob Clark { 3844b85f7f5SRob Clark struct msm_gem_vma *vma; 385c8afe684SRob Clark 38690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 387cb1e3818SRob Clark 3884b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 389871d812aSRob Clark 3904b85f7f5SRob Clark if (!vma) { 391522f1abfSRob Clark int ret; 392522f1abfSRob Clark 3934b85f7f5SRob Clark vma = add_vma(obj, aspace); 394c0ee9794SJordan Crouse if (IS_ERR(vma)) 395522f1abfSRob Clark return vma; 3964b85f7f5SRob Clark 3972ee4b5d2SRob Clark ret = msm_gem_init_vma(aspace, vma, obj->size, 398d3b8877eSJonathan Marek range_start, range_end); 399c0ee9794SJordan Crouse if (ret) { 400c0ee9794SJordan Crouse del_vma(vma); 401522f1abfSRob Clark return ERR_PTR(ret); 402c8afe684SRob Clark } 403522f1abfSRob Clark } else { 404522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 405522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4064b85f7f5SRob Clark } 4074b85f7f5SRob Clark 408522f1abfSRob Clark return vma; 409c0ee9794SJordan Crouse } 4104b85f7f5SRob Clark 41127674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 412c0ee9794SJordan Crouse { 413c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 414c0ee9794SJordan Crouse struct page **pages; 41564fcbde7SRob Clark int ret, prot = IOMMU_READ; 416bbc2cd07SRob Clark 417bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 418bbc2cd07SRob Clark prot |= IOMMU_WRITE; 419c0ee9794SJordan Crouse 4200b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4210b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4220b462d7aSJonathan Marek 423d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 424d12e3390SJonathan Marek prot |= IOMMU_CACHE; 425d12e3390SJonathan Marek 42690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 427c0ee9794SJordan Crouse 42890643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 429c0ee9794SJordan Crouse return -EBUSY; 430c0ee9794SJordan Crouse 431c0ee9794SJordan Crouse pages = get_pages(obj); 432c0ee9794SJordan Crouse if (IS_ERR(pages)) 433c0ee9794SJordan Crouse return PTR_ERR(pages); 434c0ee9794SJordan Crouse 435522f1abfSRob Clark ret = msm_gem_map_vma(vma->aspace, vma, prot, msm_obj->sgt, obj->size); 43664fcbde7SRob Clark 43764fcbde7SRob Clark if (!ret) 43864fcbde7SRob Clark msm_obj->pin_count++; 43964fcbde7SRob Clark 44064fcbde7SRob Clark return ret; 441c0ee9794SJordan Crouse } 442c0ee9794SJordan Crouse 443311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 44427674c66SRob Clark { 44527674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 44627674c66SRob Clark 44727674c66SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 44827674c66SRob Clark 44927674c66SRob Clark msm_obj->pin_count--; 45027674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 45127674c66SRob Clark 45227674c66SRob Clark update_inactive(msm_obj); 45327674c66SRob Clark } 45427674c66SRob Clark 45527674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 45627674c66SRob Clark struct msm_gem_address_space *aspace) 45727674c66SRob Clark { 45827674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 45927674c66SRob Clark } 46027674c66SRob Clark 461e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 462d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 463d3b8877eSJonathan Marek u64 range_start, u64 range_end) 464c0ee9794SJordan Crouse { 465522f1abfSRob Clark struct msm_gem_vma *vma; 466c0ee9794SJordan Crouse int ret; 467c0ee9794SJordan Crouse 46890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 469c0ee9794SJordan Crouse 470522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 471522f1abfSRob Clark if (IS_ERR(vma)) 472522f1abfSRob Clark return PTR_ERR(vma); 473c0ee9794SJordan Crouse 47427674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 475c0ee9794SJordan Crouse if (!ret) 476522f1abfSRob Clark *iova = vma->iova; 477c0ee9794SJordan Crouse 478c8afe684SRob Clark return ret; 479c8afe684SRob Clark } 480c8afe684SRob Clark 481e4b87d22SRob Clark /* 482e4b87d22SRob Clark * get iova and pin it. Should have a matching put 483e4b87d22SRob Clark * limits iova to specified range (in pages) 484e4b87d22SRob Clark */ 485e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 486e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 487e4b87d22SRob Clark u64 range_start, u64 range_end) 488e4b87d22SRob Clark { 489e4b87d22SRob Clark int ret; 490e4b87d22SRob Clark 491e4b87d22SRob Clark msm_gem_lock(obj); 492e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 493e4b87d22SRob Clark msm_gem_unlock(obj); 494e4b87d22SRob Clark 495e4b87d22SRob Clark return ret; 496e4b87d22SRob Clark } 497e4b87d22SRob Clark 498d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 499d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 500d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 501d3b8877eSJonathan Marek { 502d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 503d3b8877eSJonathan Marek } 504d3b8877eSJonathan Marek 5057ad0e8cfSJordan Crouse /* 5067ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5077ad0e8cfSJordan Crouse * valid for the life of the object 5087ad0e8cfSJordan Crouse */ 5099fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5109fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5119fe041f6SJordan Crouse { 512522f1abfSRob Clark struct msm_gem_vma *vma; 513522f1abfSRob Clark int ret = 0; 5149fe041f6SJordan Crouse 515a6ae74c9SRob Clark msm_gem_lock(obj); 516522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 517522f1abfSRob Clark if (IS_ERR(vma)) { 518522f1abfSRob Clark ret = PTR_ERR(vma); 519522f1abfSRob Clark } else { 520522f1abfSRob Clark *iova = vma->iova; 521522f1abfSRob Clark } 522a6ae74c9SRob Clark msm_gem_unlock(obj); 5239fe041f6SJordan Crouse 5249fe041f6SJordan Crouse return ret; 5259fe041f6SJordan Crouse } 5269fe041f6SJordan Crouse 527a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 5288bdcd949SRob Clark struct msm_gem_address_space *aspace) 5292638d90aSRob Clark { 530a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 5314b85f7f5SRob Clark 532a636a0ffSRob Clark if (!vma) 533a636a0ffSRob Clark return 0; 5344b85f7f5SRob Clark 535a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 536a636a0ffSRob Clark return -EBUSY; 537a636a0ffSRob Clark 538a636a0ffSRob Clark msm_gem_purge_vma(vma->aspace, vma); 539a636a0ffSRob Clark msm_gem_close_vma(vma->aspace, vma); 540a636a0ffSRob Clark del_vma(vma); 541a636a0ffSRob Clark 542a636a0ffSRob Clark return 0; 5432638d90aSRob Clark } 5442638d90aSRob Clark 5457ad0e8cfSJordan Crouse /* 546a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 547a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 548a636a0ffSRob Clark * the life of the object. 549a636a0ffSRob Clark * 550a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 551e4b87d22SRob Clark */ 552a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 553a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 554e4b87d22SRob Clark { 555a636a0ffSRob Clark int ret = 0; 556a636a0ffSRob Clark 557a636a0ffSRob Clark msm_gem_lock(obj); 558a636a0ffSRob Clark if (!iova) { 559a636a0ffSRob Clark ret = clear_iova(obj, aspace); 560a636a0ffSRob Clark } else { 561e4b87d22SRob Clark struct msm_gem_vma *vma; 562a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 563a636a0ffSRob Clark if (IS_ERR(vma)) { 564a636a0ffSRob Clark ret = PTR_ERR(vma); 565a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 566a636a0ffSRob Clark clear_iova(obj, aspace); 567a636a0ffSRob Clark ret = -EBUSY; 56864fcbde7SRob Clark } 569e4b87d22SRob Clark } 570a636a0ffSRob Clark msm_gem_unlock(obj); 571a636a0ffSRob Clark 572a636a0ffSRob Clark return ret; 573a636a0ffSRob Clark } 574e4b87d22SRob Clark 575e4b87d22SRob Clark /* 5767ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5777ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5787ad0e8cfSJordan Crouse * to get rid of it 5797ad0e8cfSJordan Crouse */ 5807ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5818bdcd949SRob Clark struct msm_gem_address_space *aspace) 582c8afe684SRob Clark { 58327674c66SRob Clark struct msm_gem_vma *vma; 58427674c66SRob Clark 585a6ae74c9SRob Clark msm_gem_lock(obj); 58627674c66SRob Clark vma = lookup_vma(obj, aspace); 58727674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 588311e03c2SRob Clark msm_gem_unpin_vma(vma); 589311e03c2SRob Clark msm_gem_unpin_locked(obj); 59027674c66SRob Clark } 591a6ae74c9SRob Clark msm_gem_unlock(obj); 592c8afe684SRob Clark } 593c8afe684SRob Clark 594c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 595c8afe684SRob Clark struct drm_mode_create_dumb *args) 596c8afe684SRob Clark { 597c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 598c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 599c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 6000815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 601c8afe684SRob Clark } 602c8afe684SRob Clark 603c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 604c8afe684SRob Clark uint32_t handle, uint64_t *offset) 605c8afe684SRob Clark { 606c8afe684SRob Clark struct drm_gem_object *obj; 607c8afe684SRob Clark int ret = 0; 608c8afe684SRob Clark 609c8afe684SRob Clark /* GEM does all our handle to object mapping */ 610a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 611c8afe684SRob Clark if (obj == NULL) { 612c8afe684SRob Clark ret = -ENOENT; 613c8afe684SRob Clark goto fail; 614c8afe684SRob Clark } 615c8afe684SRob Clark 616c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 617c8afe684SRob Clark 618f7d33950SEmil Velikov drm_gem_object_put(obj); 619c8afe684SRob Clark 620c8afe684SRob Clark fail: 621c8afe684SRob Clark return ret; 622c8afe684SRob Clark } 623c8afe684SRob Clark 624fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 625c8afe684SRob Clark { 6260e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6270e08270aSSushmita Susheelendra int ret = 0; 6280e08270aSSushmita Susheelendra 62990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 630e4b87d22SRob Clark 6318b6b7d84SDaniel Vetter if (obj->import_attach) 6328b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6338b6b7d84SDaniel Vetter 63490643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6356a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 636fad33f4bSRob Clark msm_obj->madv, madv); 6370e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 638c8afe684SRob Clark } 639c8afe684SRob Clark 6400e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 641a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6420e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6430e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 644a6ae74c9SRob Clark * hold msm_obj lock) 6450e08270aSSushmita Susheelendra */ 6460e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6470e08270aSSushmita Susheelendra 6480e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6490e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6500e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6510e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6520e08270aSSushmita Susheelendra goto fail; 6530e08270aSSushmita Susheelendra } 6540e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 655af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6560e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6570e08270aSSushmita Susheelendra ret = -ENOMEM; 6580e08270aSSushmita Susheelendra goto fail; 6590e08270aSSushmita Susheelendra } 66010f76165SRob Clark 66110f76165SRob Clark update_inactive(msm_obj); 6620e08270aSSushmita Susheelendra } 6630e08270aSSushmita Susheelendra 6640e08270aSSushmita Susheelendra return msm_obj->vaddr; 6650e08270aSSushmita Susheelendra 6660e08270aSSushmita Susheelendra fail: 667e1e9db2cSRob Clark msm_obj->vmap_count--; 6680e08270aSSushmita Susheelendra return ERR_PTR(ret); 66918f23049SRob Clark } 67018f23049SRob Clark 671e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 672e4b87d22SRob Clark { 673e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 674e4b87d22SRob Clark } 675e4b87d22SRob Clark 676fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 677fad33f4bSRob Clark { 678e4b87d22SRob Clark void *ret; 679e4b87d22SRob Clark 680e4b87d22SRob Clark msm_gem_lock(obj); 681e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 682e4b87d22SRob Clark msm_gem_unlock(obj); 683e4b87d22SRob Clark 684e4b87d22SRob Clark return ret; 685fad33f4bSRob Clark } 686fad33f4bSRob Clark 687fad33f4bSRob Clark /* 688fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 689fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 690fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 691fad33f4bSRob Clark * active list. 692fad33f4bSRob Clark */ 693fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 694fad33f4bSRob Clark { 695fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 696fad33f4bSRob Clark } 697fad33f4bSRob Clark 698e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 69918f23049SRob Clark { 7000e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7010e08270aSSushmita Susheelendra 70290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 70390643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 704e4b87d22SRob Clark 7050e08270aSSushmita Susheelendra msm_obj->vmap_count--; 7064cd33c48SRob Clark } 7070e08270aSSushmita Susheelendra 7080e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7094cd33c48SRob Clark { 710a6ae74c9SRob Clark msm_gem_lock(obj); 711e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 712a6ae74c9SRob Clark msm_gem_unlock(obj); 7134cd33c48SRob Clark } 7144cd33c48SRob Clark 7154cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7164cd33c48SRob Clark * false or -errno. 7174cd33c48SRob Clark */ 7184cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7194cd33c48SRob Clark { 7204cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 72168209390SRob Clark 722a6ae74c9SRob Clark msm_gem_lock(obj); 723c8afe684SRob Clark 724c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 725c8afe684SRob Clark msm_obj->madv = madv; 726c8afe684SRob Clark 7270e08270aSSushmita Susheelendra madv = msm_obj->madv; 7280e08270aSSushmita Susheelendra 7293edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7303edfa30fSRob Clark * between inactive lists 7313edfa30fSRob Clark */ 7323edfa30fSRob Clark if (msm_obj->active_count == 0) 7333edfa30fSRob Clark update_inactive(msm_obj); 7343edfa30fSRob Clark 735a6ae74c9SRob Clark msm_gem_unlock(obj); 7360e08270aSSushmita Susheelendra 7370e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 738c8afe684SRob Clark } 739c8afe684SRob Clark 740599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 74168209390SRob Clark { 74268209390SRob Clark struct drm_device *dev = obj->dev; 74368209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 74468209390SRob Clark 74581d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 74690643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 74768209390SRob Clark 74820d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 74920d0ae2fSRob Clark put_iova_spaces(obj, true); 7500e08270aSSushmita Susheelendra 751599089c6SRob Clark msm_gem_vunmap(obj); 75268209390SRob Clark 75381d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 75481d4d597SRob Clark 75568209390SRob Clark put_pages(obj); 75668209390SRob Clark 7579b73bde3SIskren Chernev put_iova_vmas(obj); 7589b73bde3SIskren Chernev 75968209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 76025ed38b3SRob Clark update_inactive(msm_obj); 76168209390SRob Clark 76268209390SRob Clark drm_gem_free_mmap_offset(obj); 76368209390SRob Clark 76468209390SRob Clark /* Our goal here is to return as much of the memory as 76568209390SRob Clark * is possible back to the system as we are called from OOM. 76668209390SRob Clark * To do this we must instruct the shmfs to drop all of its 76768209390SRob Clark * backing pages, *now*. 76868209390SRob Clark */ 76968209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 77068209390SRob Clark 77168209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 77268209390SRob Clark 0, (loff_t)-1); 77368209390SRob Clark } 77468209390SRob Clark 77537c68900SLee Jones /* 77663f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 77763f17ef8SRob Clark */ 77863f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 77963f17ef8SRob Clark { 78063f17ef8SRob Clark struct drm_device *dev = obj->dev; 78163f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 78263f17ef8SRob Clark 78363f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 78463f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 78563f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 78663f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 78763f17ef8SRob Clark 78863f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 78963f17ef8SRob Clark put_iova_spaces(obj, false); 79063f17ef8SRob Clark 79163f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 79263f17ef8SRob Clark 79363f17ef8SRob Clark put_pages(obj); 79463f17ef8SRob Clark 79563f17ef8SRob Clark update_inactive(msm_obj); 79663f17ef8SRob Clark } 79763f17ef8SRob Clark 798599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 799e1e9db2cSRob Clark { 800e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 801e1e9db2cSRob Clark 80290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8030e08270aSSushmita Susheelendra 80490643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 805e1e9db2cSRob Clark return; 806e1e9db2cSRob Clark 807e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 808e1e9db2cSRob Clark msm_obj->vaddr = NULL; 809e1e9db2cSRob Clark } 810e1e9db2cSRob Clark 8119d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 8127198e6b0SRob Clark { 8137198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 814d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 815d984457bSRob Clark 816d984457bSRob Clark might_sleep(); 81790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 81890643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 81990643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 8209d8baa2bSAkhil P Oommen 821ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 822d984457bSRob Clark mutex_lock(&priv->mm_lock); 82364fcbde7SRob Clark if (msm_obj->evictable) 82464fcbde7SRob Clark mark_unevictable(msm_obj); 825a83cc4fbSBaokun Li list_move_tail(&msm_obj->mm_list, &gpu->active_list); 826d984457bSRob Clark mutex_unlock(&priv->mm_lock); 8277198e6b0SRob Clark } 8289d8baa2bSAkhil P Oommen } 8297198e6b0SRob Clark 8309d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8317198e6b0SRob Clark { 8327198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8337198e6b0SRob Clark 834d984457bSRob Clark might_sleep(); 83590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8367198e6b0SRob Clark 837ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8383edfa30fSRob Clark update_inactive(msm_obj); 8397198e6b0SRob Clark } 8409d8baa2bSAkhil P Oommen } 8417198e6b0SRob Clark 8423edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8433edfa30fSRob Clark { 8443edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8453edfa30fSRob Clark 84664fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 84764fcbde7SRob Clark 84864fcbde7SRob Clark if (msm_obj->active_count != 0) 84964fcbde7SRob Clark return; 85064fcbde7SRob Clark 8513edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8523edfa30fSRob Clark 853cc8a4d5aSRob Clark if (msm_obj->dontneed) 8540054eeb7SRob Clark mark_unpurgeable(msm_obj); 85564fcbde7SRob Clark if (msm_obj->evictable) 85664fcbde7SRob Clark mark_unevictable(msm_obj); 857cc8a4d5aSRob Clark 858cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 85964fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8603edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 86164fcbde7SRob Clark mark_evictable(msm_obj); 862cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8633edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8640054eeb7SRob Clark mark_purgeable(msm_obj); 865cc8a4d5aSRob Clark } else { 86664fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 86764fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 868cc8a4d5aSRob Clark } 8693edfa30fSRob Clark 8703edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8713edfa30fSRob Clark } 8723edfa30fSRob Clark 873*01780d02SRob Clark bool msm_gem_active(struct drm_gem_object *obj) 874*01780d02SRob Clark { 875*01780d02SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 876*01780d02SRob Clark 877*01780d02SRob Clark if (to_msm_bo(obj)->pin_count) 878*01780d02SRob Clark return true; 879*01780d02SRob Clark 880*01780d02SRob Clark return !dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)); 881*01780d02SRob Clark } 882*01780d02SRob Clark 883ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 884ba00c3f2SRob Clark { 885b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 886f755e227SChris Wilson unsigned long remain = 887f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 888f755e227SChris Wilson long ret; 889b6295f9aSRob Clark 8907bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 8917bc80a54SChristian König true, remain); 892f755e227SChris Wilson if (ret == 0) 893f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 894f755e227SChris Wilson else if (ret < 0) 895f755e227SChris Wilson return ret; 896ba00c3f2SRob Clark 8977198e6b0SRob Clark /* TODO cache maintenance */ 8987198e6b0SRob Clark 899b6295f9aSRob Clark return 0; 9007198e6b0SRob Clark } 9017198e6b0SRob Clark 9027198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 9037198e6b0SRob Clark { 9047198e6b0SRob Clark /* TODO cache maintenance */ 905c8afe684SRob Clark return 0; 906c8afe684SRob Clark } 907c8afe684SRob Clark 908c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 909528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 910528107c8SRob Clark struct msm_gem_stats *stats) 911c8afe684SRob Clark { 912c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 91352791eeeSChristian König struct dma_resv *robj = obj->resv; 9144b85f7f5SRob Clark struct msm_gem_vma *vma; 915c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9164cd33c48SRob Clark const char *madv; 917c8afe684SRob Clark 918a6ae74c9SRob Clark msm_gem_lock(obj); 919b6295f9aSRob Clark 920528107c8SRob Clark stats->all.count++; 921528107c8SRob Clark stats->all.size += obj->size; 922528107c8SRob Clark 923528107c8SRob Clark if (is_active(msm_obj)) { 924528107c8SRob Clark stats->active.count++; 925528107c8SRob Clark stats->active.size += obj->size; 926528107c8SRob Clark } 927528107c8SRob Clark 928f48f3563SRob Clark if (msm_obj->pages) { 929f48f3563SRob Clark stats->resident.count++; 930f48f3563SRob Clark stats->resident.size += obj->size; 931f48f3563SRob Clark } 932f48f3563SRob Clark 9334cd33c48SRob Clark switch (msm_obj->madv) { 9344cd33c48SRob Clark case __MSM_MADV_PURGED: 935528107c8SRob Clark stats->purged.count++; 936528107c8SRob Clark stats->purged.size += obj->size; 9374cd33c48SRob Clark madv = " purged"; 9384cd33c48SRob Clark break; 9394cd33c48SRob Clark case MSM_MADV_DONTNEED: 9400054eeb7SRob Clark stats->purgeable.count++; 9410054eeb7SRob Clark stats->purgeable.size += obj->size; 9424cd33c48SRob Clark madv = " purgeable"; 9434cd33c48SRob Clark break; 9444cd33c48SRob Clark case MSM_MADV_WILLNEED: 9454cd33c48SRob Clark default: 9464cd33c48SRob Clark madv = ""; 9474cd33c48SRob Clark break; 9484cd33c48SRob Clark } 9494cd33c48SRob Clark 950575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9517198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9522c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 953667ce33eSRob Clark off, msm_obj->vaddr); 954667ce33eSRob Clark 9550815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 956667ce33eSRob Clark 957575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 958575f0485SJordan Crouse 959575f0485SJordan Crouse seq_puts(m, " vmas:"); 960575f0485SJordan Crouse 96125faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 96225faf2f2SRob Clark const char *name, *comm; 96325faf2f2SRob Clark if (vma->aspace) { 96425faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 96525faf2f2SRob Clark struct task_struct *task = 96625faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 96725faf2f2SRob Clark if (task) { 96825faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 969ac3e4f42SRob Clark put_task_struct(task); 97025faf2f2SRob Clark } else { 97125faf2f2SRob Clark comm = NULL; 97225faf2f2SRob Clark } 97325faf2f2SRob Clark name = aspace->name; 97425faf2f2SRob Clark } else { 97525faf2f2SRob Clark name = comm = NULL; 97625faf2f2SRob Clark } 97725faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 97825faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 97925faf2f2SRob Clark vma->aspace, vma->iova, 98025faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 981ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 98225faf2f2SRob Clark kfree(comm); 98325faf2f2SRob Clark } 984575f0485SJordan Crouse 985575f0485SJordan Crouse seq_puts(m, "\n"); 986575f0485SJordan Crouse } 987b6295f9aSRob Clark 988f19ee2f3SChristian König dma_resv_describe(robj, m); 989a6ae74c9SRob Clark msm_gem_unlock(obj); 990c8afe684SRob Clark } 991c8afe684SRob Clark 992c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 993c8afe684SRob Clark { 994528107c8SRob Clark struct msm_gem_stats stats = {}; 995c8afe684SRob Clark struct msm_gem_object *msm_obj; 996c8afe684SRob Clark 9970815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9986ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 999c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 1000575f0485SJordan Crouse seq_puts(m, " "); 1001528107c8SRob Clark msm_gem_describe(obj, m, &stats); 1002c8afe684SRob Clark } 1003c8afe684SRob Clark 1004528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 1005528107c8SRob Clark stats.all.count, stats.all.size); 1006528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 1007528107c8SRob Clark stats.active.count, stats.active.size); 1008f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1009f48f3563SRob Clark stats.resident.count, stats.resident.size); 1010f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10110054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1012528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1013528107c8SRob Clark stats.purged.count, stats.purged.size); 1014c8afe684SRob Clark } 1015c8afe684SRob Clark #endif 1016c8afe684SRob Clark 1017030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 10186867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 1019c8afe684SRob Clark { 1020c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 102148e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 102248e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 102348e7f183SKristian H. Kristensen 10246ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10256ed0897cSRob Clark list_del(&msm_obj->node); 10266ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10276ed0897cSRob Clark 1028d984457bSRob Clark mutex_lock(&priv->mm_lock); 1029cc8a4d5aSRob Clark if (msm_obj->dontneed) 10300054eeb7SRob Clark mark_unpurgeable(msm_obj); 1031c8afe684SRob Clark list_del(&msm_obj->mm_list); 1032d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1033c8afe684SRob Clark 1034c8afe684SRob Clark /* object should not be on active list: */ 103590643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 1036c8afe684SRob Clark 103720d0ae2fSRob Clark put_iova_spaces(obj, true); 1038c8afe684SRob Clark 103905b84911SRob Clark if (obj->import_attach) { 104090643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 104105b84911SRob Clark 104205b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 104305b84911SRob Clark * ours, just free the array we allocated: 104405b84911SRob Clark */ 10452098105eSMichal Hocko kvfree(msm_obj->pages); 104605b84911SRob Clark 104757f04815SRob Clark put_iova_vmas(obj); 104857f04815SRob Clark 1049f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 105005b84911SRob Clark } else { 1051599089c6SRob Clark msm_gem_vunmap(obj); 1052c8afe684SRob Clark put_pages(obj); 105357f04815SRob Clark put_iova_vmas(obj); 105405b84911SRob Clark } 1055c8afe684SRob Clark 1056c8afe684SRob Clark drm_gem_object_release(obj); 1057c8afe684SRob Clark 1058c8afe684SRob Clark kfree(msm_obj); 1059c8afe684SRob Clark } 1060c8afe684SRob Clark 1061510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1062510410bfSThomas Zimmermann { 1063510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1064510410bfSThomas Zimmermann 10658246913aSRob Clark vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; 1066510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1067510410bfSThomas Zimmermann 1068510410bfSThomas Zimmermann return 0; 1069510410bfSThomas Zimmermann } 1070510410bfSThomas Zimmermann 1071c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1072c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10730815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10740815d774SJordan Crouse char *name) 1075c8afe684SRob Clark { 1076c8afe684SRob Clark struct drm_gem_object *obj; 1077c8afe684SRob Clark int ret; 1078c8afe684SRob Clark 1079c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1080c8afe684SRob Clark 1081c8afe684SRob Clark if (IS_ERR(obj)) 1082c8afe684SRob Clark return PTR_ERR(obj); 1083c8afe684SRob Clark 10840815d774SJordan Crouse if (name) 10850815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10860815d774SJordan Crouse 1087c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1088c8afe684SRob Clark 1089c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1090f7d33950SEmil Velikov drm_gem_object_put(obj); 1091c8afe684SRob Clark 1092c8afe684SRob Clark return ret; 1093c8afe684SRob Clark } 1094c8afe684SRob Clark 10953c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10963c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10973c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10983c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10993c9edd9cSThomas Zimmermann }; 11003c9edd9cSThomas Zimmermann 11013c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 11023c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11033c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11043c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11053c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11063c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11073c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1108510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 11093c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11103c9edd9cSThomas Zimmermann }; 11113c9edd9cSThomas Zimmermann 111205b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 111305b84911SRob Clark uint32_t size, uint32_t flags, 11143cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1115c8afe684SRob Clark { 1116d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1117c8afe684SRob Clark struct msm_gem_object *msm_obj; 1118c8afe684SRob Clark 1119c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1120c8afe684SRob Clark case MSM_BO_CACHED: 1121c8afe684SRob Clark case MSM_BO_WC: 1122c8afe684SRob Clark break; 1123d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1124d12e3390SJonathan Marek if (priv->has_cached_coherent) 1125d12e3390SJonathan Marek break; 1126e181ad43SGustavo A. R. Silva fallthrough; 1127c8afe684SRob Clark default: 11282d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1129c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 113005b84911SRob Clark return -EINVAL; 1131c8afe684SRob Clark } 1132c8afe684SRob Clark 1133667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 113405b84911SRob Clark if (!msm_obj) 113505b84911SRob Clark return -ENOMEM; 1136c8afe684SRob Clark 1137c8afe684SRob Clark msm_obj->flags = flags; 11384cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1139c8afe684SRob Clark 1140027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11414b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11424b85f7f5SRob Clark 114305b84911SRob Clark *obj = &msm_obj->base; 11443c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 114505b84911SRob Clark 114605b84911SRob Clark return 0; 114705b84911SRob Clark } 114805b84911SRob Clark 1149030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 115005b84911SRob Clark { 1151f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11523cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1153871d812aSRob Clark struct drm_gem_object *obj = NULL; 1154f4839bd5SRob Clark bool use_vram = false; 115505b84911SRob Clark int ret; 115605b84911SRob Clark 115705b84911SRob Clark size = PAGE_ALIGN(size); 115805b84911SRob Clark 1159c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1160f4839bd5SRob Clark use_vram = true; 116186f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1162f4839bd5SRob Clark use_vram = true; 1163f4839bd5SRob Clark 116490643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1165f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1166f4839bd5SRob Clark 11671a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11681a5dff5dSJordan Crouse * infrastructure grumpy 11691a5dff5dSJordan Crouse */ 11701a5dff5dSJordan Crouse if (size == 0) 11711a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11721a5dff5dSJordan Crouse 11733cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 117405b84911SRob Clark if (ret) 11752203bd0eSDan Carpenter return ERR_PTR(ret); 117605b84911SRob Clark 11773cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11783cbdc8d8SAkhil P Oommen 1179f4839bd5SRob Clark if (use_vram) { 11804b85f7f5SRob Clark struct msm_gem_vma *vma; 1181f4839bd5SRob Clark struct page **pages; 1182b3949a9aSHans Verkuil 1183a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1184a694ffedSIskren Chernev 1185a6ae74c9SRob Clark msm_gem_lock(obj); 1186f4839bd5SRob Clark 11874b85f7f5SRob Clark vma = add_vma(obj, NULL); 1188a6ae74c9SRob Clark msm_gem_unlock(obj); 11894b85f7f5SRob Clark if (IS_ERR(vma)) { 11904b85f7f5SRob Clark ret = PTR_ERR(vma); 11914b85f7f5SRob Clark goto fail; 11924b85f7f5SRob Clark } 11934b85f7f5SRob Clark 11944b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11954b85f7f5SRob Clark 119645f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 119745f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 119845f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 119945f56690SAlexey Minnekhanov * mm_list to be empty. 120045f56690SAlexey Minnekhanov */ 120145f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 120245f56690SAlexey Minnekhanov 120307fcad0dSIskren Chernev msm_gem_lock(obj); 1204f4839bd5SRob Clark pages = get_pages(obj); 120507fcad0dSIskren Chernev msm_gem_unlock(obj); 1206f4839bd5SRob Clark if (IS_ERR(pages)) { 1207f4839bd5SRob Clark ret = PTR_ERR(pages); 1208f4839bd5SRob Clark goto fail; 1209f4839bd5SRob Clark } 12104b85f7f5SRob Clark 12114b85f7f5SRob Clark vma->iova = physaddr(obj); 1212f4839bd5SRob Clark } else { 121305b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 121405b84911SRob Clark if (ret) 121505b84911SRob Clark goto fail; 12160abdba47SLucas Stach /* 12170abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12180abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12190abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12200abdba47SLucas Stach * expected if you're going to pin these pages. 12210abdba47SLucas Stach */ 12220abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1223871d812aSRob Clark } 122405b84911SRob Clark 1225d984457bSRob Clark mutex_lock(&priv->mm_lock); 122664fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1227d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12283cbdc8d8SAkhil P Oommen 12296ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12306ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12316ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12326ed0897cSRob Clark 123305b84911SRob Clark return obj; 123405b84911SRob Clark 123505b84911SRob Clark fail: 1236f7d33950SEmil Velikov drm_gem_object_put(obj); 123705b84911SRob Clark return ERR_PTR(ret); 123805b84911SRob Clark } 123905b84911SRob Clark 124005b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 124179f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 124205b84911SRob Clark { 12433cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 124405b84911SRob Clark struct msm_gem_object *msm_obj; 124505b84911SRob Clark struct drm_gem_object *obj; 124679f0e202SRob Clark uint32_t size; 124705b84911SRob Clark int ret, npages; 124805b84911SRob Clark 1249871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1250c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12516a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1252871d812aSRob Clark return ERR_PTR(-EINVAL); 1253871d812aSRob Clark } 1254871d812aSRob Clark 125579f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 125605b84911SRob Clark 12573cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 125805b84911SRob Clark if (ret) 12592203bd0eSDan Carpenter return ERR_PTR(ret); 126005b84911SRob Clark 126105b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 126205b84911SRob Clark 126305b84911SRob Clark npages = size / PAGE_SIZE; 126405b84911SRob Clark 126505b84911SRob Clark msm_obj = to_msm_bo(obj); 1266a6ae74c9SRob Clark msm_gem_lock(obj); 126705b84911SRob Clark msm_obj->sgt = sgt; 12682098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 126905b84911SRob Clark if (!msm_obj->pages) { 1270a6ae74c9SRob Clark msm_gem_unlock(obj); 127105b84911SRob Clark ret = -ENOMEM; 127205b84911SRob Clark goto fail; 127305b84911SRob Clark } 127405b84911SRob Clark 1275c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12760e08270aSSushmita Susheelendra if (ret) { 1277a6ae74c9SRob Clark msm_gem_unlock(obj); 127805b84911SRob Clark goto fail; 12790e08270aSSushmita Susheelendra } 128005b84911SRob Clark 1281a6ae74c9SRob Clark msm_gem_unlock(obj); 12823cbdc8d8SAkhil P Oommen 1283d984457bSRob Clark mutex_lock(&priv->mm_lock); 128464fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1285d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12863cbdc8d8SAkhil P Oommen 12876ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12886ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12896ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12906ed0897cSRob Clark 1291c8afe684SRob Clark return obj; 1292c8afe684SRob Clark 1293c8afe684SRob Clark fail: 1294f7d33950SEmil Velikov drm_gem_object_put(obj); 1295c8afe684SRob Clark return ERR_PTR(ret); 1296c8afe684SRob Clark } 12978223286dSJordan Crouse 1298030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12998223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1300030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 13018223286dSJordan Crouse { 13028223286dSJordan Crouse void *vaddr; 1303030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 13048223286dSJordan Crouse int ret; 13058223286dSJordan Crouse 13068223286dSJordan Crouse if (IS_ERR(obj)) 13078223286dSJordan Crouse return ERR_CAST(obj); 13088223286dSJordan Crouse 13098223286dSJordan Crouse if (iova) { 13109fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 131193f7abf1SJordan Crouse if (ret) 131293f7abf1SJordan Crouse goto err; 13138223286dSJordan Crouse } 13148223286dSJordan Crouse 13158223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1316c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13177ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 131893f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 131993f7abf1SJordan Crouse goto err; 13208223286dSJordan Crouse } 13218223286dSJordan Crouse 13228223286dSJordan Crouse if (bo) 13238223286dSJordan Crouse *bo = obj; 13248223286dSJordan Crouse 13258223286dSJordan Crouse return vaddr; 132693f7abf1SJordan Crouse err: 1327f7d33950SEmil Velikov drm_gem_object_put(obj); 132893f7abf1SJordan Crouse 132993f7abf1SJordan Crouse return ERR_PTR(ret); 133093f7abf1SJordan Crouse 13318223286dSJordan Crouse } 13328223286dSJordan Crouse 13331e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1334030af2b0SRob Clark struct msm_gem_address_space *aspace) 13351e29dff0SJordan Crouse { 13361e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13371e29dff0SJordan Crouse return; 13381e29dff0SJordan Crouse 13391e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13407ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1341f7d33950SEmil Velikov drm_gem_object_put(bo); 13421e29dff0SJordan Crouse } 13430815d774SJordan Crouse 13440815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13450815d774SJordan Crouse { 13460815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13470815d774SJordan Crouse va_list ap; 13480815d774SJordan Crouse 13490815d774SJordan Crouse if (!fmt) 13500815d774SJordan Crouse return; 13510815d774SJordan Crouse 13520815d774SJordan Crouse va_start(ap, fmt); 13530815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13540815d774SJordan Crouse va_end(ap); 13550815d774SJordan Crouse } 1356