1caab277bSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2c8afe684SRob Clark /* 3c8afe684SRob Clark * Copyright (C) 2013 Red Hat 4c8afe684SRob Clark * Author: Rob Clark <robdclark@gmail.com> 5c8afe684SRob Clark */ 6c8afe684SRob Clark 70a0f0d8bSChristoph Hellwig #include <linux/dma-map-ops.h> 8c8afe684SRob Clark #include <linux/spinlock.h> 9c8afe684SRob Clark #include <linux/shmem_fs.h> 1005b84911SRob Clark #include <linux/dma-buf.h> 1101c8f1c4SDan Williams #include <linux/pfn_t.h> 12c8afe684SRob Clark 13feea39a8SSam Ravnborg #include <drm/drm_prime.h> 14feea39a8SSam Ravnborg 15c8afe684SRob Clark #include "msm_drv.h" 16fde5de6cSRob Clark #include "msm_fence.h" 17c8afe684SRob Clark #include "msm_gem.h" 187198e6b0SRob Clark #include "msm_gpu.h" 19871d812aSRob Clark #include "msm_mmu.h" 20c8afe684SRob Clark 213edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj); 220e08270aSSushmita Susheelendra 23871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 24871d812aSRob Clark { 25871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 26871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 27871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 28871d812aSRob Clark priv->vram.paddr; 29871d812aSRob Clark } 30871d812aSRob Clark 31072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 32072f1f91SRob Clark { 33072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 34072f1f91SRob Clark return !msm_obj->vram_node; 35072f1f91SRob Clark } 36072f1f91SRob Clark 373de433c5SRob Clark /* 383de433c5SRob Clark * Cache sync.. this is a bit over-complicated, to fit dma-mapping 393de433c5SRob Clark * API. Really GPU cache is out of scope here (handled on cmdstream) 403de433c5SRob Clark * and all we need to do is invalidate newly allocated pages before 413de433c5SRob Clark * mapping to CPU as uncached/writecombine. 423de433c5SRob Clark * 433de433c5SRob Clark * On top of this, we have the added headache, that depending on 443de433c5SRob Clark * display generation, the display's iommu may be wired up to either 453de433c5SRob Clark * the toplevel drm device (mdss), or to the mdp sub-node, meaning 463de433c5SRob Clark * that here we either have dma-direct or iommu ops. 473de433c5SRob Clark * 483de433c5SRob Clark * Let this be a cautionary tail of abstraction gone wrong. 493de433c5SRob Clark */ 503de433c5SRob Clark 513de433c5SRob Clark static void sync_for_device(struct msm_gem_object *msm_obj) 523de433c5SRob Clark { 533de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 543de433c5SRob Clark 557690a33fSMarek Szyprowski dma_map_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 563de433c5SRob Clark } 573de433c5SRob Clark 583de433c5SRob Clark static void sync_for_cpu(struct msm_gem_object *msm_obj) 593de433c5SRob Clark { 603de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 613de433c5SRob Clark 627690a33fSMarek Szyprowski dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 633de433c5SRob Clark } 643de433c5SRob Clark 65871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 660e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 67871d812aSRob Clark { 68871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 70871d812aSRob Clark dma_addr_t paddr; 71871d812aSRob Clark struct page **p; 72871d812aSRob Clark int ret, i; 73871d812aSRob Clark 742098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 75871d812aSRob Clark if (!p) 76871d812aSRob Clark return ERR_PTR(-ENOMEM); 77871d812aSRob Clark 780e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 794e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 800e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 81871d812aSRob Clark if (ret) { 822098105eSMichal Hocko kvfree(p); 83871d812aSRob Clark return ERR_PTR(ret); 84871d812aSRob Clark } 85871d812aSRob Clark 86871d812aSRob Clark paddr = physaddr(obj); 87871d812aSRob Clark for (i = 0; i < npages; i++) { 88871d812aSRob Clark p[i] = phys_to_page(paddr); 89871d812aSRob Clark paddr += PAGE_SIZE; 90871d812aSRob Clark } 91871d812aSRob Clark 92871d812aSRob Clark return p; 93871d812aSRob Clark } 94c8afe684SRob Clark 95c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 96c8afe684SRob Clark { 97c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 98c8afe684SRob Clark 9990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 10007fcad0dSIskren Chernev 101c8afe684SRob Clark if (!msm_obj->pages) { 102c8afe684SRob Clark struct drm_device *dev = obj->dev; 103871d812aSRob Clark struct page **p; 104c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 105c8afe684SRob Clark 106072f1f91SRob Clark if (use_pages(obj)) 1070cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 108871d812aSRob Clark else 109871d812aSRob Clark p = get_pages_vram(obj, npages); 110871d812aSRob Clark 111c8afe684SRob Clark if (IS_ERR(p)) { 1126a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 113c8afe684SRob Clark PTR_ERR(p)); 114c8afe684SRob Clark return p; 115c8afe684SRob Clark } 116c8afe684SRob Clark 11762e3a3e3SPrakash Kamliya msm_obj->pages = p; 11862e3a3e3SPrakash Kamliya 119707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1201f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 12162e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 122c8afe684SRob Clark 1236a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 12462e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 12562e3a3e3SPrakash Kamliya return ptr; 12662e3a3e3SPrakash Kamliya } 127c8afe684SRob Clark 128c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 129c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 130c8afe684SRob Clark */ 131c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1323de433c5SRob Clark sync_for_device(msm_obj); 133*64fcbde7SRob Clark 134*64fcbde7SRob Clark GEM_WARN_ON(msm_obj->active_count); 135*64fcbde7SRob 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 */ 163c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 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); 193a6ae74c9SRob Clark msm_gem_unlock(obj); 19405b84911SRob Clark return p; 19505b84911SRob Clark } 19605b84911SRob Clark 19705b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 19805b84911SRob Clark { 19905b84911SRob Clark /* when we start tracking the pin count, then do something here */ 20005b84911SRob Clark } 20105b84911SRob Clark 202c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 203c8afe684SRob Clark struct vm_area_struct *vma) 204c8afe684SRob Clark { 205c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 206c8afe684SRob Clark 207c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 208c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 209c8afe684SRob Clark 210c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 211c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 212c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 213c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 214c8afe684SRob Clark } else { 215c8afe684SRob Clark /* 216c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 217c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 218c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 219c8afe684SRob Clark */ 220c8afe684SRob Clark vma->vm_pgoff = 0; 221295992fbSChristian König vma_set_file(vma, obj->filp); 222c8afe684SRob Clark 223c8afe684SRob Clark vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); 224c8afe684SRob Clark } 225c8afe684SRob Clark 226c8afe684SRob Clark return 0; 227c8afe684SRob Clark } 228c8afe684SRob Clark 229c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 230c8afe684SRob Clark { 231c8afe684SRob Clark int ret; 232c8afe684SRob Clark 233c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 234c8afe684SRob Clark if (ret) { 235c8afe684SRob Clark DBG("mmap failed: %d", ret); 236c8afe684SRob Clark return ret; 237c8afe684SRob Clark } 238c8afe684SRob Clark 239c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 240c8afe684SRob Clark } 241c8afe684SRob Clark 2423c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 243c8afe684SRob Clark { 24411bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 245c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2460e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 247c8afe684SRob Clark struct page **pages; 248c8afe684SRob Clark unsigned long pfn; 249c8afe684SRob Clark pgoff_t pgoff; 250a5f74ec7SSouptick Joarder int err; 251a5f74ec7SSouptick Joarder vm_fault_t ret; 252c8afe684SRob Clark 2530e08270aSSushmita Susheelendra /* 2540e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2550e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 256d78d383aSRob Clark */ 257a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 258a5f74ec7SSouptick Joarder if (err) { 259a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 260c8afe684SRob Clark goto out; 261a5f74ec7SSouptick Joarder } 262c8afe684SRob Clark 26390643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 264a6ae74c9SRob Clark msm_gem_unlock(obj); 2650e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2660e08270aSSushmita Susheelendra } 2670e08270aSSushmita Susheelendra 268c8afe684SRob Clark /* make sure we have pages attached now */ 269c8afe684SRob Clark pages = get_pages(obj); 270c8afe684SRob Clark if (IS_ERR(pages)) { 271a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 272c8afe684SRob Clark goto out_unlock; 273c8afe684SRob Clark } 274c8afe684SRob Clark 275c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2761a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 277c8afe684SRob Clark 278871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 279c8afe684SRob Clark 2801a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 281c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 282c8afe684SRob Clark 283a5f74ec7SSouptick Joarder ret = vmf_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 284c8afe684SRob Clark out_unlock: 285a6ae74c9SRob Clark msm_gem_unlock(obj); 286c8afe684SRob Clark out: 287a5f74ec7SSouptick Joarder return ret; 288c8afe684SRob Clark } 289c8afe684SRob Clark 290c8afe684SRob Clark /** get mmap offset */ 291c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 292c8afe684SRob Clark { 293c8afe684SRob Clark struct drm_device *dev = obj->dev; 294c8afe684SRob Clark int ret; 295c8afe684SRob Clark 29690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 297c8afe684SRob Clark 298c8afe684SRob Clark /* Make it mmapable */ 299c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 300c8afe684SRob Clark 301c8afe684SRob Clark if (ret) { 3026a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 303c8afe684SRob Clark return 0; 304c8afe684SRob Clark } 305c8afe684SRob Clark 306c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 307c8afe684SRob Clark } 308c8afe684SRob Clark 309c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 310c8afe684SRob Clark { 311c8afe684SRob Clark uint64_t offset; 3120e08270aSSushmita Susheelendra 313a6ae74c9SRob Clark msm_gem_lock(obj); 314c8afe684SRob Clark offset = mmap_offset(obj); 315a6ae74c9SRob Clark msm_gem_unlock(obj); 316c8afe684SRob Clark return offset; 317c8afe684SRob Clark } 318c8afe684SRob Clark 3194b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3204b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3214b85f7f5SRob Clark { 3224b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3234b85f7f5SRob Clark struct msm_gem_vma *vma; 3244b85f7f5SRob Clark 32590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3260e08270aSSushmita Susheelendra 3274b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3284b85f7f5SRob Clark if (!vma) 3294b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3304b85f7f5SRob Clark 3314b85f7f5SRob Clark vma->aspace = aspace; 3324b85f7f5SRob Clark 3334b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3344b85f7f5SRob Clark 3354b85f7f5SRob Clark return vma; 3364b85f7f5SRob Clark } 3374b85f7f5SRob Clark 3384b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3394b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3404b85f7f5SRob Clark { 3414b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3424b85f7f5SRob Clark struct msm_gem_vma *vma; 3434b85f7f5SRob Clark 34490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3454b85f7f5SRob Clark 3464b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3474b85f7f5SRob Clark if (vma->aspace == aspace) 3484b85f7f5SRob Clark return vma; 3494b85f7f5SRob Clark } 3504b85f7f5SRob Clark 3514b85f7f5SRob Clark return NULL; 3524b85f7f5SRob Clark } 3534b85f7f5SRob Clark 3544b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3554b85f7f5SRob Clark { 3564b85f7f5SRob Clark if (!vma) 3574b85f7f5SRob Clark return; 3584b85f7f5SRob Clark 3594b85f7f5SRob Clark list_del(&vma->list); 3604b85f7f5SRob Clark kfree(vma); 3614b85f7f5SRob Clark } 3624b85f7f5SRob Clark 36320d0ae2fSRob Clark /** 36420d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 36520d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 36620d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 36720d0ae2fSRob Clark * mapping. 36820d0ae2fSRob Clark */ 3694fe5f65eSRob Clark static void 37020d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3714fe5f65eSRob Clark { 3724fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3739b73bde3SIskren Chernev struct msm_gem_vma *vma; 3744fe5f65eSRob Clark 37590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3764fe5f65eSRob Clark 3779b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 378d67f1b6dSBrian Masney if (vma->aspace) { 3797ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 38020d0ae2fSRob Clark if (close) 3817ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 382d67f1b6dSBrian Masney } 3839b73bde3SIskren Chernev } 3849b73bde3SIskren Chernev } 3859b73bde3SIskren Chernev 3869b73bde3SIskren Chernev /* Called with msm_obj locked */ 3879b73bde3SIskren Chernev static void 3889b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3894fe5f65eSRob Clark { 3904fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3914fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3924fe5f65eSRob Clark 39390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3944fe5f65eSRob Clark 3954fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3964b85f7f5SRob Clark del_vma(vma); 3974fe5f65eSRob Clark } 3984fe5f65eSRob Clark } 3994fe5f65eSRob Clark 4008117e5e5SRob Clark static int get_iova_locked(struct drm_gem_object *obj, 401d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 402d3b8877eSJonathan Marek u64 range_start, u64 range_end) 403c8afe684SRob Clark { 4044b85f7f5SRob Clark struct msm_gem_vma *vma; 405c8afe684SRob Clark int ret = 0; 406c8afe684SRob Clark 40790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 408cb1e3818SRob Clark 4094b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 410871d812aSRob Clark 4114b85f7f5SRob Clark if (!vma) { 4124b85f7f5SRob Clark vma = add_vma(obj, aspace); 413c0ee9794SJordan Crouse if (IS_ERR(vma)) 414c0ee9794SJordan Crouse return PTR_ERR(vma); 4154b85f7f5SRob Clark 416d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 417d3b8877eSJonathan Marek range_start, range_end); 418c0ee9794SJordan Crouse if (ret) { 419c0ee9794SJordan Crouse del_vma(vma); 420c0ee9794SJordan Crouse return ret; 421c8afe684SRob Clark } 4224b85f7f5SRob Clark } 4234b85f7f5SRob Clark 4244b85f7f5SRob Clark *iova = vma->iova; 4254b85f7f5SRob Clark return 0; 426c0ee9794SJordan Crouse } 4274b85f7f5SRob Clark 428c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 429c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 430c0ee9794SJordan Crouse { 431c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 432c0ee9794SJordan Crouse struct msm_gem_vma *vma; 433c0ee9794SJordan Crouse struct page **pages; 434*64fcbde7SRob Clark int ret, prot = IOMMU_READ; 435bbc2cd07SRob Clark 436bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 437bbc2cd07SRob Clark prot |= IOMMU_WRITE; 438c0ee9794SJordan Crouse 4390b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4400b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4410b462d7aSJonathan Marek 44290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 443c0ee9794SJordan Crouse 44490643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 445c0ee9794SJordan Crouse return -EBUSY; 446c0ee9794SJordan Crouse 447c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 44890643a24SRob Clark if (GEM_WARN_ON(!vma)) 449c0ee9794SJordan Crouse return -EINVAL; 450c0ee9794SJordan Crouse 451c0ee9794SJordan Crouse pages = get_pages(obj); 452c0ee9794SJordan Crouse if (IS_ERR(pages)) 453c0ee9794SJordan Crouse return PTR_ERR(pages); 454c0ee9794SJordan Crouse 455*64fcbde7SRob Clark ret = msm_gem_map_vma(aspace, vma, prot, 456bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 457*64fcbde7SRob Clark 458*64fcbde7SRob Clark if (!ret) 459*64fcbde7SRob Clark msm_obj->pin_count++; 460*64fcbde7SRob Clark 461*64fcbde7SRob Clark return ret; 462c0ee9794SJordan Crouse } 463c0ee9794SJordan Crouse 464e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 465d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 466d3b8877eSJonathan Marek u64 range_start, u64 range_end) 467c0ee9794SJordan Crouse { 468c0ee9794SJordan Crouse u64 local; 469c0ee9794SJordan Crouse int ret; 470c0ee9794SJordan Crouse 47190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 472c0ee9794SJordan Crouse 4738117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 474d3b8877eSJonathan Marek range_start, range_end); 475c0ee9794SJordan Crouse 476c0ee9794SJordan Crouse if (!ret) 477c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 478c0ee9794SJordan Crouse 479c0ee9794SJordan Crouse if (!ret) 480c0ee9794SJordan Crouse *iova = local; 481c0ee9794SJordan Crouse 482c8afe684SRob Clark return ret; 483c8afe684SRob Clark } 484c8afe684SRob Clark 485e4b87d22SRob Clark /* 486e4b87d22SRob Clark * get iova and pin it. Should have a matching put 487e4b87d22SRob Clark * limits iova to specified range (in pages) 488e4b87d22SRob Clark */ 489e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 490e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 491e4b87d22SRob Clark u64 range_start, u64 range_end) 492e4b87d22SRob Clark { 493e4b87d22SRob Clark int ret; 494e4b87d22SRob Clark 495e4b87d22SRob Clark msm_gem_lock(obj); 496e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 497e4b87d22SRob Clark msm_gem_unlock(obj); 498e4b87d22SRob Clark 499e4b87d22SRob Clark return ret; 500e4b87d22SRob Clark } 501e4b87d22SRob Clark 502e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 503e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 504e4b87d22SRob Clark { 505e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 506e4b87d22SRob Clark } 507e4b87d22SRob Clark 508d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 509d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 510d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 511d3b8877eSJonathan Marek { 512d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 513d3b8877eSJonathan Marek } 514d3b8877eSJonathan Marek 5157ad0e8cfSJordan Crouse /* 5167ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5177ad0e8cfSJordan Crouse * valid for the life of the object 5187ad0e8cfSJordan Crouse */ 5199fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5209fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5219fe041f6SJordan Crouse { 5229fe041f6SJordan Crouse int ret; 5239fe041f6SJordan Crouse 524a6ae74c9SRob Clark msm_gem_lock(obj); 5258117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 526a6ae74c9SRob Clark msm_gem_unlock(obj); 5279fe041f6SJordan Crouse 5289fe041f6SJordan Crouse return ret; 5299fe041f6SJordan Crouse } 5309fe041f6SJordan Crouse 5312638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5329fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5332638d90aSRob Clark */ 5348bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5358bdcd949SRob Clark struct msm_gem_address_space *aspace) 5362638d90aSRob Clark { 5374b85f7f5SRob Clark struct msm_gem_vma *vma; 5384b85f7f5SRob Clark 539a6ae74c9SRob Clark msm_gem_lock(obj); 5404b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 541a6ae74c9SRob Clark msm_gem_unlock(obj); 54290643a24SRob Clark GEM_WARN_ON(!vma); 5434b85f7f5SRob Clark 5444b85f7f5SRob Clark return vma ? vma->iova : 0; 5452638d90aSRob Clark } 5462638d90aSRob Clark 5477ad0e8cfSJordan Crouse /* 548e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 549e4b87d22SRob Clark */ 550e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 551e4b87d22SRob Clark struct msm_gem_address_space *aspace) 552e4b87d22SRob Clark { 553*64fcbde7SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 554e4b87d22SRob Clark struct msm_gem_vma *vma; 555e4b87d22SRob Clark 55690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 557e4b87d22SRob Clark 558e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 559e4b87d22SRob Clark 560*64fcbde7SRob Clark if (!GEM_WARN_ON(!vma)) { 561e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 562*64fcbde7SRob Clark 563*64fcbde7SRob Clark msm_obj->pin_count--; 564*64fcbde7SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 565*64fcbde7SRob Clark 566*64fcbde7SRob Clark update_inactive(msm_obj); 567*64fcbde7SRob Clark } 568e4b87d22SRob Clark } 569e4b87d22SRob Clark 570e4b87d22SRob Clark /* 5717ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5727ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5737ad0e8cfSJordan Crouse * to get rid of it 5747ad0e8cfSJordan Crouse */ 5757ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5768bdcd949SRob Clark struct msm_gem_address_space *aspace) 577c8afe684SRob Clark { 578a6ae74c9SRob Clark msm_gem_lock(obj); 579e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 580a6ae74c9SRob Clark msm_gem_unlock(obj); 581c8afe684SRob Clark } 582c8afe684SRob Clark 583c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 584c8afe684SRob Clark struct drm_mode_create_dumb *args) 585c8afe684SRob Clark { 586c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 587c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 588c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5890815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 590c8afe684SRob Clark } 591c8afe684SRob Clark 592c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 593c8afe684SRob Clark uint32_t handle, uint64_t *offset) 594c8afe684SRob Clark { 595c8afe684SRob Clark struct drm_gem_object *obj; 596c8afe684SRob Clark int ret = 0; 597c8afe684SRob Clark 598c8afe684SRob Clark /* GEM does all our handle to object mapping */ 599a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 600c8afe684SRob Clark if (obj == NULL) { 601c8afe684SRob Clark ret = -ENOENT; 602c8afe684SRob Clark goto fail; 603c8afe684SRob Clark } 604c8afe684SRob Clark 605c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 606c8afe684SRob Clark 607f7d33950SEmil Velikov drm_gem_object_put(obj); 608c8afe684SRob Clark 609c8afe684SRob Clark fail: 610c8afe684SRob Clark return ret; 611c8afe684SRob Clark } 612c8afe684SRob Clark 613fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 614c8afe684SRob Clark { 6150e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6160e08270aSSushmita Susheelendra int ret = 0; 6170e08270aSSushmita Susheelendra 61890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 619e4b87d22SRob Clark 6208b6b7d84SDaniel Vetter if (obj->import_attach) 6218b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6228b6b7d84SDaniel Vetter 62390643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6246a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 625fad33f4bSRob Clark msm_obj->madv, madv); 6260e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 627c8afe684SRob Clark } 628c8afe684SRob Clark 6290e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 630a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6310e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6320e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 633a6ae74c9SRob Clark * hold msm_obj lock) 6340e08270aSSushmita Susheelendra */ 6350e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6360e08270aSSushmita Susheelendra 6370e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6380e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6390e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6400e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6410e08270aSSushmita Susheelendra goto fail; 6420e08270aSSushmita Susheelendra } 6430e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 6440e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 6450e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6460e08270aSSushmita Susheelendra ret = -ENOMEM; 6470e08270aSSushmita Susheelendra goto fail; 6480e08270aSSushmita Susheelendra } 6490e08270aSSushmita Susheelendra } 6500e08270aSSushmita Susheelendra 6510e08270aSSushmita Susheelendra return msm_obj->vaddr; 6520e08270aSSushmita Susheelendra 6530e08270aSSushmita Susheelendra fail: 654e1e9db2cSRob Clark msm_obj->vmap_count--; 6550e08270aSSushmita Susheelendra return ERR_PTR(ret); 65618f23049SRob Clark } 65718f23049SRob Clark 658e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 659e4b87d22SRob Clark { 660e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 661e4b87d22SRob Clark } 662e4b87d22SRob Clark 663fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 664fad33f4bSRob Clark { 665e4b87d22SRob Clark void *ret; 666e4b87d22SRob Clark 667e4b87d22SRob Clark msm_gem_lock(obj); 668e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 669e4b87d22SRob Clark msm_gem_unlock(obj); 670e4b87d22SRob Clark 671e4b87d22SRob Clark return ret; 672fad33f4bSRob Clark } 673fad33f4bSRob Clark 674fad33f4bSRob Clark /* 675fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 676fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 677fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 678fad33f4bSRob Clark * active list. 679fad33f4bSRob Clark */ 680fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 681fad33f4bSRob Clark { 682fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 683fad33f4bSRob Clark } 684fad33f4bSRob Clark 685e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 68618f23049SRob Clark { 6870e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6880e08270aSSushmita Susheelendra 68990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 69090643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 691e4b87d22SRob Clark 6920e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6934cd33c48SRob Clark } 6940e08270aSSushmita Susheelendra 6950e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6964cd33c48SRob Clark { 697a6ae74c9SRob Clark msm_gem_lock(obj); 698e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 699a6ae74c9SRob Clark msm_gem_unlock(obj); 7004cd33c48SRob Clark } 7014cd33c48SRob Clark 7024cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7034cd33c48SRob Clark * false or -errno. 7044cd33c48SRob Clark */ 7054cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7064cd33c48SRob Clark { 7074cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 70868209390SRob Clark 709a6ae74c9SRob Clark msm_gem_lock(obj); 710c8afe684SRob Clark 711c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 712c8afe684SRob Clark msm_obj->madv = madv; 713c8afe684SRob Clark 7140e08270aSSushmita Susheelendra madv = msm_obj->madv; 7150e08270aSSushmita Susheelendra 7163edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7173edfa30fSRob Clark * between inactive lists 7183edfa30fSRob Clark */ 7193edfa30fSRob Clark if (msm_obj->active_count == 0) 7203edfa30fSRob Clark update_inactive(msm_obj); 7213edfa30fSRob Clark 722a6ae74c9SRob Clark msm_gem_unlock(obj); 7230e08270aSSushmita Susheelendra 7240e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 725c8afe684SRob Clark } 726c8afe684SRob Clark 727599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 72868209390SRob Clark { 72968209390SRob Clark struct drm_device *dev = obj->dev; 73068209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 73168209390SRob Clark 73290643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 73390643a24SRob Clark GEM_WARN_ON(obj->import_attach); 73468209390SRob Clark 73520d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 73620d0ae2fSRob Clark put_iova_spaces(obj, true); 7370e08270aSSushmita Susheelendra 738599089c6SRob Clark msm_gem_vunmap(obj); 73968209390SRob Clark 74068209390SRob Clark put_pages(obj); 74168209390SRob Clark 7429b73bde3SIskren Chernev put_iova_vmas(obj); 7439b73bde3SIskren Chernev 74468209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 74525ed38b3SRob Clark update_inactive(msm_obj); 74668209390SRob Clark 74768209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 74868209390SRob Clark drm_gem_free_mmap_offset(obj); 74968209390SRob Clark 75068209390SRob Clark /* Our goal here is to return as much of the memory as 75168209390SRob Clark * is possible back to the system as we are called from OOM. 75268209390SRob Clark * To do this we must instruct the shmfs to drop all of its 75368209390SRob Clark * backing pages, *now*. 75468209390SRob Clark */ 75568209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 75668209390SRob Clark 75768209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 75868209390SRob Clark 0, (loff_t)-1); 75968209390SRob Clark } 76068209390SRob Clark 761599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 762e1e9db2cSRob Clark { 763e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 764e1e9db2cSRob Clark 76590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7660e08270aSSushmita Susheelendra 76790643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 768e1e9db2cSRob Clark return; 769e1e9db2cSRob Clark 770e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 771e1e9db2cSRob Clark msm_obj->vaddr = NULL; 772e1e9db2cSRob Clark } 773e1e9db2cSRob Clark 774b6295f9aSRob Clark /* must be called before _move_to_active().. */ 775b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 776b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 777b6295f9aSRob Clark { 77852791eeeSChristian König struct dma_resv_list *fobj; 779f54d1867SChris Wilson struct dma_fence *fence; 780b6295f9aSRob Clark int i, ret; 781b6295f9aSRob Clark 78252791eeeSChristian König fobj = dma_resv_get_list(obj->resv); 783b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 78452791eeeSChristian König fence = dma_resv_get_excl(obj->resv); 785b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 786b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 787f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 788b6295f9aSRob Clark if (ret) 789b6295f9aSRob Clark return ret; 790b6295f9aSRob Clark } 791b6295f9aSRob Clark } 792b6295f9aSRob Clark 793b6295f9aSRob Clark if (!exclusive || !fobj) 794b6295f9aSRob Clark return 0; 795b6295f9aSRob Clark 796b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 797b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 79852791eeeSChristian König dma_resv_held(obj->resv)); 799b6295f9aSRob Clark if (fence->context != fctx->context) { 800f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 801b6295f9aSRob Clark if (ret) 802b6295f9aSRob Clark return ret; 803b6295f9aSRob Clark } 804b6295f9aSRob Clark } 805b6295f9aSRob Clark 806b6295f9aSRob Clark return 0; 807b6295f9aSRob Clark } 808b6295f9aSRob Clark 8099d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 8107198e6b0SRob Clark { 8117198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 812d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 813d984457bSRob Clark 814d984457bSRob Clark might_sleep(); 81590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 81690643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 81790643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 818*64fcbde7SRob Clark GEM_WARN_ON(!msm_obj->sgt); 8199d8baa2bSAkhil P Oommen 820ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 821d984457bSRob Clark mutex_lock(&priv->mm_lock); 822*64fcbde7SRob Clark if (msm_obj->evictable) 823*64fcbde7SRob Clark mark_unevictable(msm_obj); 824cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 8257198e6b0SRob Clark list_add_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 846*64fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 847*64fcbde7SRob Clark 848*64fcbde7SRob Clark if (msm_obj->active_count != 0) 849*64fcbde7SRob Clark return; 850*64fcbde7SRob Clark 8513edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8523edfa30fSRob Clark 853cc8a4d5aSRob Clark if (msm_obj->dontneed) 8540054eeb7SRob Clark mark_unpurgeable(msm_obj); 855*64fcbde7SRob Clark if (msm_obj->evictable) 856*64fcbde7SRob Clark mark_unevictable(msm_obj); 857cc8a4d5aSRob Clark 858cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 859*64fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8603edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 861*64fcbde7SRob 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 { 866*64fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 867*64fcbde7SRob 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 873ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 874ba00c3f2SRob Clark { 875b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 876f755e227SChris Wilson unsigned long remain = 877f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 878f755e227SChris Wilson long ret; 879b6295f9aSRob Clark 88052791eeeSChristian König ret = dma_resv_wait_timeout_rcu(obj->resv, write, 881f755e227SChris Wilson true, remain); 882f755e227SChris Wilson if (ret == 0) 883f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 884f755e227SChris Wilson else if (ret < 0) 885f755e227SChris Wilson return ret; 886ba00c3f2SRob Clark 8877198e6b0SRob Clark /* TODO cache maintenance */ 8887198e6b0SRob Clark 889b6295f9aSRob Clark return 0; 8907198e6b0SRob Clark } 8917198e6b0SRob Clark 8927198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8937198e6b0SRob Clark { 8947198e6b0SRob Clark /* TODO cache maintenance */ 895c8afe684SRob Clark return 0; 896c8afe684SRob Clark } 897c8afe684SRob Clark 898c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 899f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 900b6295f9aSRob Clark struct seq_file *m) 901b6295f9aSRob Clark { 902f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 903a3115621SDave Airlie seq_printf(m, "\t%9s: %s %s seq %llu\n", type, 904b6295f9aSRob Clark fence->ops->get_driver_name(fence), 905b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 906b6295f9aSRob Clark fence->seqno); 907b6295f9aSRob Clark } 908b6295f9aSRob Clark 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; 91452791eeeSChristian König struct dma_resv_list *fobj; 915f54d1867SChris Wilson struct dma_fence *fence; 9164b85f7f5SRob Clark struct msm_gem_vma *vma; 917c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9184cd33c48SRob Clark const char *madv; 919c8afe684SRob Clark 920a6ae74c9SRob Clark msm_gem_lock(obj); 921b6295f9aSRob Clark 922528107c8SRob Clark stats->all.count++; 923528107c8SRob Clark stats->all.size += obj->size; 924528107c8SRob Clark 925528107c8SRob Clark if (is_active(msm_obj)) { 926528107c8SRob Clark stats->active.count++; 927528107c8SRob Clark stats->active.size += obj->size; 928528107c8SRob Clark } 929528107c8SRob Clark 930f48f3563SRob Clark if (msm_obj->pages) { 931f48f3563SRob Clark stats->resident.count++; 932f48f3563SRob Clark stats->resident.size += obj->size; 933f48f3563SRob Clark } 934f48f3563SRob Clark 9354cd33c48SRob Clark switch (msm_obj->madv) { 9364cd33c48SRob Clark case __MSM_MADV_PURGED: 937528107c8SRob Clark stats->purged.count++; 938528107c8SRob Clark stats->purged.size += obj->size; 9394cd33c48SRob Clark madv = " purged"; 9404cd33c48SRob Clark break; 9414cd33c48SRob Clark case MSM_MADV_DONTNEED: 9420054eeb7SRob Clark stats->purgeable.count++; 9430054eeb7SRob Clark stats->purgeable.size += obj->size; 9444cd33c48SRob Clark madv = " purgeable"; 9454cd33c48SRob Clark break; 9464cd33c48SRob Clark case MSM_MADV_WILLNEED: 9474cd33c48SRob Clark default: 9484cd33c48SRob Clark madv = ""; 9494cd33c48SRob Clark break; 9504cd33c48SRob Clark } 9514cd33c48SRob Clark 952575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9537198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9542c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 955667ce33eSRob Clark off, msm_obj->vaddr); 956667ce33eSRob Clark 9570815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 958667ce33eSRob Clark 959575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 960575f0485SJordan Crouse 961575f0485SJordan Crouse seq_puts(m, " vmas:"); 962575f0485SJordan Crouse 96325faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 96425faf2f2SRob Clark const char *name, *comm; 96525faf2f2SRob Clark if (vma->aspace) { 96625faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 96725faf2f2SRob Clark struct task_struct *task = 96825faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 96925faf2f2SRob Clark if (task) { 97025faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 97125faf2f2SRob Clark } else { 97225faf2f2SRob Clark comm = NULL; 97325faf2f2SRob Clark } 97425faf2f2SRob Clark name = aspace->name; 97525faf2f2SRob Clark } else { 97625faf2f2SRob Clark name = comm = NULL; 97725faf2f2SRob Clark } 97825faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 97925faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 98025faf2f2SRob Clark vma->aspace, vma->iova, 98125faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 9827ad0e8cfSJordan Crouse vma->inuse); 98325faf2f2SRob Clark kfree(comm); 98425faf2f2SRob Clark } 985575f0485SJordan Crouse 986575f0485SJordan Crouse seq_puts(m, "\n"); 987575f0485SJordan Crouse } 988b6295f9aSRob Clark 989b6295f9aSRob Clark rcu_read_lock(); 990b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 991b6295f9aSRob Clark if (fobj) { 992b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 993b6295f9aSRob Clark 994b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 995b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 996b6295f9aSRob Clark describe_fence(fence, "Shared", m); 997b6295f9aSRob Clark } 998b6295f9aSRob Clark } 999b6295f9aSRob Clark 1000b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 1001b6295f9aSRob Clark if (fence) 1002b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 1003b6295f9aSRob Clark rcu_read_unlock(); 10040e08270aSSushmita Susheelendra 1005a6ae74c9SRob Clark msm_gem_unlock(obj); 1006c8afe684SRob Clark } 1007c8afe684SRob Clark 1008c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 1009c8afe684SRob Clark { 1010528107c8SRob Clark struct msm_gem_stats stats = {}; 1011c8afe684SRob Clark struct msm_gem_object *msm_obj; 1012c8afe684SRob Clark 10130815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 10146ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 1015c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 1016575f0485SJordan Crouse seq_puts(m, " "); 1017528107c8SRob Clark msm_gem_describe(obj, m, &stats); 1018c8afe684SRob Clark } 1019c8afe684SRob Clark 1020528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 1021528107c8SRob Clark stats.all.count, stats.all.size); 1022528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 1023528107c8SRob Clark stats.active.count, stats.active.size); 1024f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1025f48f3563SRob Clark stats.resident.count, stats.resident.size); 1026f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10270054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1028528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1029528107c8SRob Clark stats.purged.count, stats.purged.size); 1030c8afe684SRob Clark } 1031c8afe684SRob Clark #endif 1032c8afe684SRob Clark 1033eecd7fd8SEmil Velikov /* don't call directly! Use drm_gem_object_put_locked() and friends */ 1034c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 1035c8afe684SRob Clark { 1036c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 103748e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 103848e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 103948e7f183SKristian H. Kristensen 10406ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10416ed0897cSRob Clark list_del(&msm_obj->node); 10426ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10436ed0897cSRob Clark 1044d984457bSRob Clark mutex_lock(&priv->mm_lock); 1045cc8a4d5aSRob Clark if (msm_obj->dontneed) 10460054eeb7SRob Clark mark_unpurgeable(msm_obj); 1047c8afe684SRob Clark list_del(&msm_obj->mm_list); 1048d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1049c8afe684SRob Clark 1050a6ae74c9SRob Clark msm_gem_lock(obj); 1051c8afe684SRob Clark 1052c8afe684SRob Clark /* object should not be on active list: */ 105390643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 1054c8afe684SRob Clark 105520d0ae2fSRob Clark put_iova_spaces(obj, true); 1056c8afe684SRob Clark 105705b84911SRob Clark if (obj->import_attach) { 105890643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 105905b84911SRob Clark 106005b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 106105b84911SRob Clark * ours, just free the array we allocated: 106205b84911SRob Clark */ 10632098105eSMichal Hocko kvfree(msm_obj->pages); 106405b84911SRob Clark 106557f04815SRob Clark put_iova_vmas(obj); 106657f04815SRob Clark 10676c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 10686c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 10696c0e3ea2SRob Clark */ 10706c0e3ea2SRob Clark msm_gem_unlock(obj); 10716c0e3ea2SRob Clark 1072f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 107305b84911SRob Clark } else { 1074599089c6SRob Clark msm_gem_vunmap(obj); 1075c8afe684SRob Clark put_pages(obj); 107657f04815SRob Clark put_iova_vmas(obj); 10776c0e3ea2SRob Clark msm_gem_unlock(obj); 107805b84911SRob Clark } 1079c8afe684SRob Clark 1080c8afe684SRob Clark drm_gem_object_release(obj); 1081c8afe684SRob Clark 1082c8afe684SRob Clark kfree(msm_obj); 1083c8afe684SRob Clark } 1084c8afe684SRob Clark 1085c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1086c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10870815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10880815d774SJordan Crouse char *name) 1089c8afe684SRob Clark { 1090c8afe684SRob Clark struct drm_gem_object *obj; 1091c8afe684SRob Clark int ret; 1092c8afe684SRob Clark 1093c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1094c8afe684SRob Clark 1095c8afe684SRob Clark if (IS_ERR(obj)) 1096c8afe684SRob Clark return PTR_ERR(obj); 1097c8afe684SRob Clark 10980815d774SJordan Crouse if (name) 10990815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 11000815d774SJordan Crouse 1101c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1102c8afe684SRob Clark 1103c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1104f7d33950SEmil Velikov drm_gem_object_put(obj); 1105c8afe684SRob Clark 1106c8afe684SRob Clark return ret; 1107c8afe684SRob Clark } 1108c8afe684SRob Clark 11093c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 11103c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 11113c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 11123c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 11133c9edd9cSThomas Zimmermann }; 11143c9edd9cSThomas Zimmermann 11153c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 11163c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11173c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11183c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11193c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11203c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11213c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 11223c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11233c9edd9cSThomas Zimmermann }; 11243c9edd9cSThomas Zimmermann 112505b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 112605b84911SRob Clark uint32_t size, uint32_t flags, 11273cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1128c8afe684SRob Clark { 1129c8afe684SRob Clark struct msm_gem_object *msm_obj; 1130c8afe684SRob Clark 1131c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1132c8afe684SRob Clark case MSM_BO_UNCACHED: 1133c8afe684SRob Clark case MSM_BO_CACHED: 1134c8afe684SRob Clark case MSM_BO_WC: 1135c8afe684SRob Clark break; 1136c8afe684SRob Clark default: 11376a41da17SMamta Shukla DRM_DEV_ERROR(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 11497198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 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 11580e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 11590e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 116005b84911SRob Clark { 1161f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11623cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1163871d812aSRob Clark struct drm_gem_object *obj = NULL; 1164f4839bd5SRob Clark bool use_vram = false; 116505b84911SRob Clark int ret; 116605b84911SRob Clark 116705b84911SRob Clark size = PAGE_ALIGN(size); 116805b84911SRob Clark 1169c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1170f4839bd5SRob Clark use_vram = true; 117186f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1172f4839bd5SRob Clark use_vram = true; 1173f4839bd5SRob Clark 117490643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1175f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1176f4839bd5SRob Clark 11771a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11781a5dff5dSJordan Crouse * infrastructure grumpy 11791a5dff5dSJordan Crouse */ 11801a5dff5dSJordan Crouse if (size == 0) 11811a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11821a5dff5dSJordan Crouse 11833cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 118405b84911SRob Clark if (ret) 118505b84911SRob Clark goto fail; 118605b84911SRob Clark 11873cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11883cbdc8d8SAkhil P Oommen 1189f4839bd5SRob Clark if (use_vram) { 11904b85f7f5SRob Clark struct msm_gem_vma *vma; 1191f4839bd5SRob Clark struct page **pages; 1192b3949a9aSHans Verkuil 1193a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1194a694ffedSIskren Chernev 1195a6ae74c9SRob Clark msm_gem_lock(obj); 1196f4839bd5SRob Clark 11974b85f7f5SRob Clark vma = add_vma(obj, NULL); 1198a6ae74c9SRob Clark msm_gem_unlock(obj); 11994b85f7f5SRob Clark if (IS_ERR(vma)) { 12004b85f7f5SRob Clark ret = PTR_ERR(vma); 12014b85f7f5SRob Clark goto fail; 12024b85f7f5SRob Clark } 12034b85f7f5SRob Clark 12044b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 12054b85f7f5SRob Clark 120607fcad0dSIskren Chernev msm_gem_lock(obj); 1207f4839bd5SRob Clark pages = get_pages(obj); 120807fcad0dSIskren Chernev msm_gem_unlock(obj); 1209f4839bd5SRob Clark if (IS_ERR(pages)) { 1210f4839bd5SRob Clark ret = PTR_ERR(pages); 1211f4839bd5SRob Clark goto fail; 1212f4839bd5SRob Clark } 12134b85f7f5SRob Clark 12144b85f7f5SRob Clark vma->iova = physaddr(obj); 1215f4839bd5SRob Clark } else { 121605b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 121705b84911SRob Clark if (ret) 121805b84911SRob Clark goto fail; 12190abdba47SLucas Stach /* 12200abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12210abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12220abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12230abdba47SLucas Stach * expected if you're going to pin these pages. 12240abdba47SLucas Stach */ 12250abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1226871d812aSRob Clark } 122705b84911SRob Clark 1228d984457bSRob Clark mutex_lock(&priv->mm_lock); 1229*64fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1230d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12313cbdc8d8SAkhil P Oommen 12326ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12336ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12346ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12356ed0897cSRob Clark 123605b84911SRob Clark return obj; 123705b84911SRob Clark 123805b84911SRob Clark fail: 1239ce0a9dc0SRob Clark if (struct_mutex_locked) { 1240ce0a9dc0SRob Clark drm_gem_object_put_locked(obj); 1241ce0a9dc0SRob Clark } else { 1242f7d33950SEmil Velikov drm_gem_object_put(obj); 1243ce0a9dc0SRob Clark } 124405b84911SRob Clark return ERR_PTR(ret); 124505b84911SRob Clark } 124605b84911SRob Clark 12470e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 12480e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12490e08270aSSushmita Susheelendra { 12500e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 12510e08270aSSushmita Susheelendra } 12520e08270aSSushmita Susheelendra 12530e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 12540e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12550e08270aSSushmita Susheelendra { 12560e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 12570e08270aSSushmita Susheelendra } 12580e08270aSSushmita Susheelendra 125905b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 126079f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 126105b84911SRob Clark { 12623cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 126305b84911SRob Clark struct msm_gem_object *msm_obj; 126405b84911SRob Clark struct drm_gem_object *obj; 126579f0e202SRob Clark uint32_t size; 126605b84911SRob Clark int ret, npages; 126705b84911SRob Clark 1268871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1269c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12706a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1271871d812aSRob Clark return ERR_PTR(-EINVAL); 1272871d812aSRob Clark } 1273871d812aSRob Clark 127479f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 127505b84911SRob Clark 12763cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 127705b84911SRob Clark if (ret) 127805b84911SRob Clark goto fail; 127905b84911SRob Clark 128005b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 128105b84911SRob Clark 128205b84911SRob Clark npages = size / PAGE_SIZE; 128305b84911SRob Clark 128405b84911SRob Clark msm_obj = to_msm_bo(obj); 1285a6ae74c9SRob Clark msm_gem_lock(obj); 128605b84911SRob Clark msm_obj->sgt = sgt; 12872098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 128805b84911SRob Clark if (!msm_obj->pages) { 1289a6ae74c9SRob Clark msm_gem_unlock(obj); 129005b84911SRob Clark ret = -ENOMEM; 129105b84911SRob Clark goto fail; 129205b84911SRob Clark } 129305b84911SRob Clark 1294c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12950e08270aSSushmita Susheelendra if (ret) { 1296a6ae74c9SRob Clark msm_gem_unlock(obj); 129705b84911SRob Clark goto fail; 12980e08270aSSushmita Susheelendra } 129905b84911SRob Clark 1300a6ae74c9SRob Clark msm_gem_unlock(obj); 13013cbdc8d8SAkhil P Oommen 1302d984457bSRob Clark mutex_lock(&priv->mm_lock); 1303*64fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1304d984457bSRob Clark mutex_unlock(&priv->mm_lock); 13053cbdc8d8SAkhil P Oommen 13066ed0897cSRob Clark mutex_lock(&priv->obj_lock); 13076ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 13086ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 13096ed0897cSRob Clark 1310c8afe684SRob Clark return obj; 1311c8afe684SRob Clark 1312c8afe684SRob Clark fail: 1313f7d33950SEmil Velikov drm_gem_object_put(obj); 1314c8afe684SRob Clark return ERR_PTR(ret); 1315c8afe684SRob Clark } 13168223286dSJordan Crouse 13178223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13188223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13198223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 13208223286dSJordan Crouse { 13218223286dSJordan Crouse void *vaddr; 13228223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 13238223286dSJordan Crouse int ret; 13248223286dSJordan Crouse 13258223286dSJordan Crouse if (IS_ERR(obj)) 13268223286dSJordan Crouse return ERR_CAST(obj); 13278223286dSJordan Crouse 13288223286dSJordan Crouse if (iova) { 13299fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 133093f7abf1SJordan Crouse if (ret) 133193f7abf1SJordan Crouse goto err; 13328223286dSJordan Crouse } 13338223286dSJordan Crouse 13348223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1335c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13367ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 133793f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 133893f7abf1SJordan Crouse goto err; 13398223286dSJordan Crouse } 13408223286dSJordan Crouse 13418223286dSJordan Crouse if (bo) 13428223286dSJordan Crouse *bo = obj; 13438223286dSJordan Crouse 13448223286dSJordan Crouse return vaddr; 134593f7abf1SJordan Crouse err: 134693f7abf1SJordan Crouse if (locked) 1347eecd7fd8SEmil Velikov drm_gem_object_put_locked(obj); 134893f7abf1SJordan Crouse else 1349f7d33950SEmil Velikov drm_gem_object_put(obj); 135093f7abf1SJordan Crouse 135193f7abf1SJordan Crouse return ERR_PTR(ret); 135293f7abf1SJordan Crouse 13538223286dSJordan Crouse } 13548223286dSJordan Crouse 13558223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13568223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13578223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13588223286dSJordan Crouse { 13598223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 13608223286dSJordan Crouse } 13618223286dSJordan Crouse 13628223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 13638223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13648223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13658223286dSJordan Crouse { 13668223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 13678223286dSJordan Crouse } 13681e29dff0SJordan Crouse 13691e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 13701e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 13711e29dff0SJordan Crouse { 13721e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13731e29dff0SJordan Crouse return; 13741e29dff0SJordan Crouse 13751e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13767ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 13771e29dff0SJordan Crouse 13781e29dff0SJordan Crouse if (locked) 1379eecd7fd8SEmil Velikov drm_gem_object_put_locked(bo); 13801e29dff0SJordan Crouse else 1381f7d33950SEmil Velikov drm_gem_object_put(bo); 13821e29dff0SJordan Crouse } 13830815d774SJordan Crouse 13840815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13850815d774SJordan Crouse { 13860815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13870815d774SJordan Crouse va_list ap; 13880815d774SJordan Crouse 13890815d774SJordan Crouse if (!fmt) 13900815d774SJordan Crouse return; 13910815d774SJordan Crouse 13920815d774SJordan Crouse va_start(ap, fmt); 13930815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13940815d774SJordan Crouse va_end(ap); 13950815d774SJordan Crouse } 1396