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 9907fcad0dSIskren Chernev 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); 133c8afe684SRob Clark } 134c8afe684SRob Clark 135c8afe684SRob Clark return msm_obj->pages; 136c8afe684SRob Clark } 137c8afe684SRob Clark 1380e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1390e08270aSSushmita Susheelendra { 1400e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1410e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1420e08270aSSushmita Susheelendra 1430e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1440e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1450e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1460e08270aSSushmita Susheelendra 1470e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1480e08270aSSushmita Susheelendra } 1490e08270aSSushmita Susheelendra 150c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 151c8afe684SRob Clark { 152c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 153c8afe684SRob Clark 154c8afe684SRob Clark if (msm_obj->pages) { 1553976626eSBen Hutchings if (msm_obj->sgt) { 1563976626eSBen Hutchings /* For non-cached buffers, ensure the new 1573976626eSBen Hutchings * pages are clean because display controller, 1583976626eSBen Hutchings * GPU, etc. are not coherent: 159c8afe684SRob Clark */ 160c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1613de433c5SRob Clark sync_for_cpu(msm_obj); 16262e3a3e3SPrakash Kamliya 163c8afe684SRob Clark sg_free_table(msm_obj->sgt); 164c8afe684SRob Clark kfree(msm_obj->sgt); 1653976626eSBen Hutchings } 166c8afe684SRob Clark 167072f1f91SRob Clark if (use_pages(obj)) 168c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1690e08270aSSushmita Susheelendra else 1700e08270aSSushmita Susheelendra put_pages_vram(obj); 171871d812aSRob Clark 172c8afe684SRob Clark msm_obj->pages = NULL; 173c8afe684SRob Clark } 174c8afe684SRob Clark } 175c8afe684SRob Clark 17605b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 17705b84911SRob Clark { 1780e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 17905b84911SRob Clark struct page **p; 1800e08270aSSushmita Susheelendra 181a6ae74c9SRob Clark msm_gem_lock(obj); 1820e08270aSSushmita Susheelendra 1830e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 184a6ae74c9SRob Clark msm_gem_unlock(obj); 1850e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1860e08270aSSushmita Susheelendra } 1870e08270aSSushmita Susheelendra 18805b84911SRob Clark p = get_pages(obj); 189a6ae74c9SRob Clark msm_gem_unlock(obj); 19005b84911SRob Clark return p; 19105b84911SRob Clark } 19205b84911SRob Clark 19305b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 19405b84911SRob Clark { 19505b84911SRob Clark /* when we start tracking the pin count, then do something here */ 19605b84911SRob Clark } 19705b84911SRob Clark 198c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 199c8afe684SRob Clark struct vm_area_struct *vma) 200c8afe684SRob Clark { 201c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 202c8afe684SRob Clark 203c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 204c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 205c8afe684SRob Clark 206c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 207c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 208c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 209c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 210c8afe684SRob Clark } else { 211c8afe684SRob Clark /* 212c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 213c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 214c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 215c8afe684SRob Clark */ 216c8afe684SRob Clark vma->vm_pgoff = 0; 217295992fbSChristian König vma_set_file(vma, obj->filp); 218c8afe684SRob Clark 219c8afe684SRob Clark vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); 220c8afe684SRob Clark } 221c8afe684SRob Clark 222c8afe684SRob Clark return 0; 223c8afe684SRob Clark } 224c8afe684SRob Clark 225c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 226c8afe684SRob Clark { 227c8afe684SRob Clark int ret; 228c8afe684SRob Clark 229c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 230c8afe684SRob Clark if (ret) { 231c8afe684SRob Clark DBG("mmap failed: %d", ret); 232c8afe684SRob Clark return ret; 233c8afe684SRob Clark } 234c8afe684SRob Clark 235c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 236c8afe684SRob Clark } 237c8afe684SRob Clark 2383c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 239c8afe684SRob Clark { 24011bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 241c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2420e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 243c8afe684SRob Clark struct page **pages; 244c8afe684SRob Clark unsigned long pfn; 245c8afe684SRob Clark pgoff_t pgoff; 246a5f74ec7SSouptick Joarder int err; 247a5f74ec7SSouptick Joarder vm_fault_t ret; 248c8afe684SRob Clark 2490e08270aSSushmita Susheelendra /* 2500e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2510e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 252d78d383aSRob Clark */ 253a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 254a5f74ec7SSouptick Joarder if (err) { 255a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 256c8afe684SRob Clark goto out; 257a5f74ec7SSouptick Joarder } 258c8afe684SRob Clark 2590e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 260a6ae74c9SRob Clark msm_gem_unlock(obj); 2610e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2620e08270aSSushmita Susheelendra } 2630e08270aSSushmita Susheelendra 264c8afe684SRob Clark /* make sure we have pages attached now */ 265c8afe684SRob Clark pages = get_pages(obj); 266c8afe684SRob Clark if (IS_ERR(pages)) { 267a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 268c8afe684SRob Clark goto out_unlock; 269c8afe684SRob Clark } 270c8afe684SRob Clark 271c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2721a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 273c8afe684SRob Clark 274871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 275c8afe684SRob Clark 2761a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 277c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 278c8afe684SRob Clark 279a5f74ec7SSouptick Joarder ret = vmf_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 280c8afe684SRob Clark out_unlock: 281a6ae74c9SRob Clark msm_gem_unlock(obj); 282c8afe684SRob Clark out: 283a5f74ec7SSouptick Joarder return ret; 284c8afe684SRob Clark } 285c8afe684SRob Clark 286c8afe684SRob Clark /** get mmap offset */ 287c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 288c8afe684SRob Clark { 289c8afe684SRob Clark struct drm_device *dev = obj->dev; 290c8afe684SRob Clark int ret; 291c8afe684SRob Clark 292a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 293c8afe684SRob Clark 294c8afe684SRob Clark /* Make it mmapable */ 295c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 296c8afe684SRob Clark 297c8afe684SRob Clark if (ret) { 2986a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 299c8afe684SRob Clark return 0; 300c8afe684SRob Clark } 301c8afe684SRob Clark 302c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 303c8afe684SRob Clark } 304c8afe684SRob Clark 305c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 306c8afe684SRob Clark { 307c8afe684SRob Clark uint64_t offset; 3080e08270aSSushmita Susheelendra 309a6ae74c9SRob Clark msm_gem_lock(obj); 310c8afe684SRob Clark offset = mmap_offset(obj); 311a6ae74c9SRob Clark msm_gem_unlock(obj); 312c8afe684SRob Clark return offset; 313c8afe684SRob Clark } 314c8afe684SRob Clark 3154b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3164b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3174b85f7f5SRob Clark { 3184b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3194b85f7f5SRob Clark struct msm_gem_vma *vma; 3204b85f7f5SRob Clark 321a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 3220e08270aSSushmita Susheelendra 3234b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3244b85f7f5SRob Clark if (!vma) 3254b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3264b85f7f5SRob Clark 3274b85f7f5SRob Clark vma->aspace = aspace; 3284b85f7f5SRob Clark 3294b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3304b85f7f5SRob Clark 3314b85f7f5SRob Clark return vma; 3324b85f7f5SRob Clark } 3334b85f7f5SRob Clark 3344b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3354b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3364b85f7f5SRob Clark { 3374b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3384b85f7f5SRob Clark struct msm_gem_vma *vma; 3394b85f7f5SRob Clark 340a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 3414b85f7f5SRob Clark 3424b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3434b85f7f5SRob Clark if (vma->aspace == aspace) 3444b85f7f5SRob Clark return vma; 3454b85f7f5SRob Clark } 3464b85f7f5SRob Clark 3474b85f7f5SRob Clark return NULL; 3484b85f7f5SRob Clark } 3494b85f7f5SRob Clark 3504b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3514b85f7f5SRob Clark { 3524b85f7f5SRob Clark if (!vma) 3534b85f7f5SRob Clark return; 3544b85f7f5SRob Clark 3554b85f7f5SRob Clark list_del(&vma->list); 3564b85f7f5SRob Clark kfree(vma); 3574b85f7f5SRob Clark } 3584b85f7f5SRob Clark 359a6ae74c9SRob Clark /* Called with msm_obj locked */ 3604fe5f65eSRob Clark static void 3619b73bde3SIskren Chernev put_iova_spaces(struct drm_gem_object *obj) 3624fe5f65eSRob Clark { 3634fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3649b73bde3SIskren Chernev struct msm_gem_vma *vma; 3654fe5f65eSRob Clark 3669b73bde3SIskren Chernev WARN_ON(!msm_gem_is_locked(obj)); 3674fe5f65eSRob Clark 3689b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 369d67f1b6dSBrian Masney if (vma->aspace) { 3707ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 3717ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 372d67f1b6dSBrian Masney } 3739b73bde3SIskren Chernev } 3749b73bde3SIskren Chernev } 3759b73bde3SIskren Chernev 3769b73bde3SIskren Chernev /* Called with msm_obj locked */ 3779b73bde3SIskren Chernev static void 3789b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3794fe5f65eSRob Clark { 3804fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3814fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3824fe5f65eSRob Clark 383a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 3844fe5f65eSRob Clark 3854fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3864b85f7f5SRob Clark del_vma(vma); 3874fe5f65eSRob Clark } 3884fe5f65eSRob Clark } 3894fe5f65eSRob Clark 3908117e5e5SRob Clark static int get_iova_locked(struct drm_gem_object *obj, 391d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 392d3b8877eSJonathan Marek u64 range_start, u64 range_end) 393c8afe684SRob Clark { 3944b85f7f5SRob Clark struct msm_gem_vma *vma; 395c8afe684SRob Clark int ret = 0; 396c8afe684SRob Clark 397a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 398cb1e3818SRob Clark 3994b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 400871d812aSRob Clark 4014b85f7f5SRob Clark if (!vma) { 4024b85f7f5SRob Clark vma = add_vma(obj, aspace); 403c0ee9794SJordan Crouse if (IS_ERR(vma)) 404c0ee9794SJordan Crouse return PTR_ERR(vma); 4054b85f7f5SRob Clark 406d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 407d3b8877eSJonathan Marek range_start, range_end); 408c0ee9794SJordan Crouse if (ret) { 409c0ee9794SJordan Crouse del_vma(vma); 410c0ee9794SJordan Crouse return ret; 411c8afe684SRob Clark } 4124b85f7f5SRob Clark } 4134b85f7f5SRob Clark 4144b85f7f5SRob Clark *iova = vma->iova; 4154b85f7f5SRob Clark return 0; 416c0ee9794SJordan Crouse } 4174b85f7f5SRob Clark 418c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 419c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 420c0ee9794SJordan Crouse { 421c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 422c0ee9794SJordan Crouse struct msm_gem_vma *vma; 423c0ee9794SJordan Crouse struct page **pages; 424bbc2cd07SRob Clark int prot = IOMMU_READ; 425bbc2cd07SRob Clark 426bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 427bbc2cd07SRob Clark prot |= IOMMU_WRITE; 428c0ee9794SJordan Crouse 4290b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4300b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4310b462d7aSJonathan Marek 432a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 433c0ee9794SJordan Crouse 434c0ee9794SJordan Crouse if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 435c0ee9794SJordan Crouse return -EBUSY; 436c0ee9794SJordan Crouse 437c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 438c0ee9794SJordan Crouse if (WARN_ON(!vma)) 439c0ee9794SJordan Crouse return -EINVAL; 440c0ee9794SJordan Crouse 441c0ee9794SJordan Crouse pages = get_pages(obj); 442c0ee9794SJordan Crouse if (IS_ERR(pages)) 443c0ee9794SJordan Crouse return PTR_ERR(pages); 444c0ee9794SJordan Crouse 445bbc2cd07SRob Clark return msm_gem_map_vma(aspace, vma, prot, 446bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 447c0ee9794SJordan Crouse } 448c0ee9794SJordan Crouse 449e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 450d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 451d3b8877eSJonathan Marek u64 range_start, u64 range_end) 452c0ee9794SJordan Crouse { 453c0ee9794SJordan Crouse u64 local; 454c0ee9794SJordan Crouse int ret; 455c0ee9794SJordan Crouse 456e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 457c0ee9794SJordan Crouse 4588117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 459d3b8877eSJonathan Marek range_start, range_end); 460c0ee9794SJordan Crouse 461c0ee9794SJordan Crouse if (!ret) 462c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 463c0ee9794SJordan Crouse 464c0ee9794SJordan Crouse if (!ret) 465c0ee9794SJordan Crouse *iova = local; 466c0ee9794SJordan Crouse 467c8afe684SRob Clark return ret; 468c8afe684SRob Clark } 469c8afe684SRob Clark 470e4b87d22SRob Clark /* 471e4b87d22SRob Clark * get iova and pin it. Should have a matching put 472e4b87d22SRob Clark * limits iova to specified range (in pages) 473e4b87d22SRob Clark */ 474e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 475e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 476e4b87d22SRob Clark u64 range_start, u64 range_end) 477e4b87d22SRob Clark { 478e4b87d22SRob Clark int ret; 479e4b87d22SRob Clark 480e4b87d22SRob Clark msm_gem_lock(obj); 481e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 482e4b87d22SRob Clark msm_gem_unlock(obj); 483e4b87d22SRob Clark 484e4b87d22SRob Clark return ret; 485e4b87d22SRob Clark } 486e4b87d22SRob Clark 487e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 488e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 489e4b87d22SRob Clark { 490e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 491e4b87d22SRob Clark } 492e4b87d22SRob Clark 493d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 494d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 495d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 496d3b8877eSJonathan Marek { 497d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 498d3b8877eSJonathan Marek } 499d3b8877eSJonathan Marek 5007ad0e8cfSJordan Crouse /* 5017ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5027ad0e8cfSJordan Crouse * valid for the life of the object 5037ad0e8cfSJordan Crouse */ 5049fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5059fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5069fe041f6SJordan Crouse { 5079fe041f6SJordan Crouse int ret; 5089fe041f6SJordan Crouse 509a6ae74c9SRob Clark msm_gem_lock(obj); 5108117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 511a6ae74c9SRob Clark msm_gem_unlock(obj); 5129fe041f6SJordan Crouse 5139fe041f6SJordan Crouse return ret; 5149fe041f6SJordan Crouse } 5159fe041f6SJordan Crouse 5162638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5179fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5182638d90aSRob Clark */ 5198bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5208bdcd949SRob Clark struct msm_gem_address_space *aspace) 5212638d90aSRob Clark { 5224b85f7f5SRob Clark struct msm_gem_vma *vma; 5234b85f7f5SRob Clark 524a6ae74c9SRob Clark msm_gem_lock(obj); 5254b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 526a6ae74c9SRob Clark msm_gem_unlock(obj); 5274b85f7f5SRob Clark WARN_ON(!vma); 5284b85f7f5SRob Clark 5294b85f7f5SRob Clark return vma ? vma->iova : 0; 5302638d90aSRob Clark } 5312638d90aSRob Clark 5327ad0e8cfSJordan Crouse /* 533e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 534e4b87d22SRob Clark */ 535e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 536e4b87d22SRob Clark struct msm_gem_address_space *aspace) 537e4b87d22SRob Clark { 538e4b87d22SRob Clark struct msm_gem_vma *vma; 539e4b87d22SRob Clark 540e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 541e4b87d22SRob Clark 542e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 543e4b87d22SRob Clark 544e4b87d22SRob Clark if (!WARN_ON(!vma)) 545e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 546e4b87d22SRob Clark } 547e4b87d22SRob Clark 548e4b87d22SRob Clark /* 5497ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5507ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5517ad0e8cfSJordan Crouse * to get rid of it 5527ad0e8cfSJordan Crouse */ 5537ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5548bdcd949SRob Clark struct msm_gem_address_space *aspace) 555c8afe684SRob Clark { 556a6ae74c9SRob Clark msm_gem_lock(obj); 557e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 558a6ae74c9SRob Clark msm_gem_unlock(obj); 559c8afe684SRob Clark } 560c8afe684SRob Clark 561c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 562c8afe684SRob Clark struct drm_mode_create_dumb *args) 563c8afe684SRob Clark { 564c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 565c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 566c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5670815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 568c8afe684SRob Clark } 569c8afe684SRob Clark 570c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 571c8afe684SRob Clark uint32_t handle, uint64_t *offset) 572c8afe684SRob Clark { 573c8afe684SRob Clark struct drm_gem_object *obj; 574c8afe684SRob Clark int ret = 0; 575c8afe684SRob Clark 576c8afe684SRob Clark /* GEM does all our handle to object mapping */ 577a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 578c8afe684SRob Clark if (obj == NULL) { 579c8afe684SRob Clark ret = -ENOENT; 580c8afe684SRob Clark goto fail; 581c8afe684SRob Clark } 582c8afe684SRob Clark 583c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 584c8afe684SRob Clark 585f7d33950SEmil Velikov drm_gem_object_put(obj); 586c8afe684SRob Clark 587c8afe684SRob Clark fail: 588c8afe684SRob Clark return ret; 589c8afe684SRob Clark } 590c8afe684SRob Clark 591fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 592c8afe684SRob Clark { 5930e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5940e08270aSSushmita Susheelendra int ret = 0; 5950e08270aSSushmita Susheelendra 596e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 597e4b87d22SRob Clark 5988b6b7d84SDaniel Vetter if (obj->import_attach) 5998b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6008b6b7d84SDaniel Vetter 601fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 6026a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 603fad33f4bSRob Clark msm_obj->madv, madv); 6040e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 605c8afe684SRob Clark } 606c8afe684SRob Clark 6070e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 608a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6090e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6100e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 611a6ae74c9SRob Clark * hold msm_obj lock) 6120e08270aSSushmita Susheelendra */ 6130e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6140e08270aSSushmita Susheelendra 6150e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6160e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6170e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6180e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6190e08270aSSushmita Susheelendra goto fail; 6200e08270aSSushmita Susheelendra } 6210e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 6220e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 6230e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6240e08270aSSushmita Susheelendra ret = -ENOMEM; 6250e08270aSSushmita Susheelendra goto fail; 6260e08270aSSushmita Susheelendra } 6270e08270aSSushmita Susheelendra } 6280e08270aSSushmita Susheelendra 6290e08270aSSushmita Susheelendra return msm_obj->vaddr; 6300e08270aSSushmita Susheelendra 6310e08270aSSushmita Susheelendra fail: 632e1e9db2cSRob Clark msm_obj->vmap_count--; 6330e08270aSSushmita Susheelendra return ERR_PTR(ret); 63418f23049SRob Clark } 63518f23049SRob Clark 636e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 637e4b87d22SRob Clark { 638e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 639e4b87d22SRob Clark } 640e4b87d22SRob Clark 641fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 642fad33f4bSRob Clark { 643e4b87d22SRob Clark void *ret; 644e4b87d22SRob Clark 645e4b87d22SRob Clark msm_gem_lock(obj); 646e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 647e4b87d22SRob Clark msm_gem_unlock(obj); 648e4b87d22SRob Clark 649e4b87d22SRob Clark return ret; 650fad33f4bSRob Clark } 651fad33f4bSRob Clark 652fad33f4bSRob Clark /* 653fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 654fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 655fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 656fad33f4bSRob Clark * active list. 657fad33f4bSRob Clark */ 658fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 659fad33f4bSRob Clark { 660fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 661fad33f4bSRob Clark } 662fad33f4bSRob Clark 663e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 66418f23049SRob Clark { 6650e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6660e08270aSSushmita Susheelendra 667e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 6680e08270aSSushmita Susheelendra WARN_ON(msm_obj->vmap_count < 1); 669e4b87d22SRob Clark 6700e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6714cd33c48SRob Clark } 6720e08270aSSushmita Susheelendra 6730e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6744cd33c48SRob Clark { 675a6ae74c9SRob Clark msm_gem_lock(obj); 676e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 677a6ae74c9SRob Clark msm_gem_unlock(obj); 6784cd33c48SRob Clark } 6794cd33c48SRob Clark 6804cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6814cd33c48SRob Clark * false or -errno. 6824cd33c48SRob Clark */ 6834cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6844cd33c48SRob Clark { 6854cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 68668209390SRob Clark 687a6ae74c9SRob Clark msm_gem_lock(obj); 688c8afe684SRob Clark 689c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 690c8afe684SRob Clark msm_obj->madv = madv; 691c8afe684SRob Clark 6920e08270aSSushmita Susheelendra madv = msm_obj->madv; 6930e08270aSSushmita Susheelendra 6943edfa30fSRob Clark /* If the obj is inactive, we might need to move it 6953edfa30fSRob Clark * between inactive lists 6963edfa30fSRob Clark */ 6973edfa30fSRob Clark if (msm_obj->active_count == 0) 6983edfa30fSRob Clark update_inactive(msm_obj); 6993edfa30fSRob Clark 700a6ae74c9SRob Clark msm_gem_unlock(obj); 7010e08270aSSushmita Susheelendra 7020e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 703c8afe684SRob Clark } 704c8afe684SRob Clark 705599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 70668209390SRob Clark { 70768209390SRob Clark struct drm_device *dev = obj->dev; 70868209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 70968209390SRob Clark 71068209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 71168209390SRob Clark WARN_ON(obj->import_attach); 71268209390SRob Clark 7139b73bde3SIskren Chernev put_iova_spaces(obj); 7140e08270aSSushmita Susheelendra 715599089c6SRob Clark msm_gem_vunmap(obj); 71668209390SRob Clark 71768209390SRob Clark put_pages(obj); 71868209390SRob Clark 7199b73bde3SIskren Chernev put_iova_vmas(obj); 7209b73bde3SIskren Chernev 72168209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 72225ed38b3SRob Clark update_inactive(msm_obj); 72368209390SRob Clark 72468209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 72568209390SRob Clark drm_gem_free_mmap_offset(obj); 72668209390SRob Clark 72768209390SRob Clark /* Our goal here is to return as much of the memory as 72868209390SRob Clark * is possible back to the system as we are called from OOM. 72968209390SRob Clark * To do this we must instruct the shmfs to drop all of its 73068209390SRob Clark * backing pages, *now*. 73168209390SRob Clark */ 73268209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 73368209390SRob Clark 73468209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 73568209390SRob Clark 0, (loff_t)-1); 73668209390SRob Clark } 73768209390SRob Clark 738599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 739e1e9db2cSRob Clark { 740e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 741e1e9db2cSRob Clark 742a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 7430e08270aSSushmita Susheelendra 744e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 745e1e9db2cSRob Clark return; 746e1e9db2cSRob Clark 747e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 748e1e9db2cSRob Clark msm_obj->vaddr = NULL; 749e1e9db2cSRob Clark } 750e1e9db2cSRob Clark 751b6295f9aSRob Clark /* must be called before _move_to_active().. */ 752b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 753b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 754b6295f9aSRob Clark { 75552791eeeSChristian König struct dma_resv_list *fobj; 756f54d1867SChris Wilson struct dma_fence *fence; 757b6295f9aSRob Clark int i, ret; 758b6295f9aSRob Clark 75952791eeeSChristian König fobj = dma_resv_get_list(obj->resv); 760b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 76152791eeeSChristian König fence = dma_resv_get_excl(obj->resv); 762b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 763b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 764f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 765b6295f9aSRob Clark if (ret) 766b6295f9aSRob Clark return ret; 767b6295f9aSRob Clark } 768b6295f9aSRob Clark } 769b6295f9aSRob Clark 770b6295f9aSRob Clark if (!exclusive || !fobj) 771b6295f9aSRob Clark return 0; 772b6295f9aSRob Clark 773b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 774b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 77552791eeeSChristian König dma_resv_held(obj->resv)); 776b6295f9aSRob Clark if (fence->context != fctx->context) { 777f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 778b6295f9aSRob Clark if (ret) 779b6295f9aSRob Clark return ret; 780b6295f9aSRob Clark } 781b6295f9aSRob Clark } 782b6295f9aSRob Clark 783b6295f9aSRob Clark return 0; 784b6295f9aSRob Clark } 785b6295f9aSRob Clark 7869d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7877198e6b0SRob Clark { 7887198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 789d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 790d984457bSRob Clark 791d984457bSRob Clark might_sleep(); 792f92f026aSRob Clark WARN_ON(!msm_gem_is_locked(obj)); 7934cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 794cc8a4d5aSRob Clark WARN_ON(msm_obj->dontneed); 7959d8baa2bSAkhil P Oommen 796ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 797d984457bSRob Clark mutex_lock(&priv->mm_lock); 798cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 7997198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 800d984457bSRob Clark mutex_unlock(&priv->mm_lock); 8017198e6b0SRob Clark } 8029d8baa2bSAkhil P Oommen } 8037198e6b0SRob Clark 8049d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8057198e6b0SRob Clark { 8067198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8077198e6b0SRob Clark 808d984457bSRob Clark might_sleep(); 809ab5c54cbSRob Clark WARN_ON(!msm_gem_is_locked(obj)); 8107198e6b0SRob Clark 811ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8123edfa30fSRob Clark update_inactive(msm_obj); 8137198e6b0SRob Clark } 8149d8baa2bSAkhil P Oommen } 8157198e6b0SRob Clark 8163edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8173edfa30fSRob Clark { 8183edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8193edfa30fSRob Clark 8203edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8213edfa30fSRob Clark WARN_ON(msm_obj->active_count != 0); 8223edfa30fSRob Clark 823cc8a4d5aSRob Clark if (msm_obj->dontneed) 824*0054eeb7SRob Clark mark_unpurgeable(msm_obj); 825cc8a4d5aSRob Clark 826cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 827cc8a4d5aSRob Clark if (msm_obj->madv == MSM_MADV_WILLNEED) { 8283edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 829cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8303edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 831*0054eeb7SRob Clark mark_purgeable(msm_obj); 832cc8a4d5aSRob Clark } else { 833cc8a4d5aSRob Clark WARN_ON(msm_obj->madv != __MSM_MADV_PURGED); 834cc8a4d5aSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_purged); 835cc8a4d5aSRob Clark } 8363edfa30fSRob Clark 8373edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8383edfa30fSRob Clark } 8393edfa30fSRob Clark 840ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 841ba00c3f2SRob Clark { 842b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 843f755e227SChris Wilson unsigned long remain = 844f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 845f755e227SChris Wilson long ret; 846b6295f9aSRob Clark 84752791eeeSChristian König ret = dma_resv_wait_timeout_rcu(obj->resv, write, 848f755e227SChris Wilson true, remain); 849f755e227SChris Wilson if (ret == 0) 850f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 851f755e227SChris Wilson else if (ret < 0) 852f755e227SChris Wilson return ret; 853ba00c3f2SRob Clark 8547198e6b0SRob Clark /* TODO cache maintenance */ 8557198e6b0SRob Clark 856b6295f9aSRob Clark return 0; 8577198e6b0SRob Clark } 8587198e6b0SRob Clark 8597198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8607198e6b0SRob Clark { 8617198e6b0SRob Clark /* TODO cache maintenance */ 862c8afe684SRob Clark return 0; 863c8afe684SRob Clark } 864c8afe684SRob Clark 865c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 866f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 867b6295f9aSRob Clark struct seq_file *m) 868b6295f9aSRob Clark { 869f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 870a3115621SDave Airlie seq_printf(m, "\t%9s: %s %s seq %llu\n", type, 871b6295f9aSRob Clark fence->ops->get_driver_name(fence), 872b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 873b6295f9aSRob Clark fence->seqno); 874b6295f9aSRob Clark } 875b6295f9aSRob Clark 876528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 877528107c8SRob Clark struct msm_gem_stats *stats) 878c8afe684SRob Clark { 879c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 88052791eeeSChristian König struct dma_resv *robj = obj->resv; 88152791eeeSChristian König struct dma_resv_list *fobj; 882f54d1867SChris Wilson struct dma_fence *fence; 8834b85f7f5SRob Clark struct msm_gem_vma *vma; 884c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8854cd33c48SRob Clark const char *madv; 886c8afe684SRob Clark 887a6ae74c9SRob Clark msm_gem_lock(obj); 888b6295f9aSRob Clark 889528107c8SRob Clark stats->all.count++; 890528107c8SRob Clark stats->all.size += obj->size; 891528107c8SRob Clark 892528107c8SRob Clark if (is_active(msm_obj)) { 893528107c8SRob Clark stats->active.count++; 894528107c8SRob Clark stats->active.size += obj->size; 895528107c8SRob Clark } 896528107c8SRob Clark 8974cd33c48SRob Clark switch (msm_obj->madv) { 8984cd33c48SRob Clark case __MSM_MADV_PURGED: 899528107c8SRob Clark stats->purged.count++; 900528107c8SRob Clark stats->purged.size += obj->size; 9014cd33c48SRob Clark madv = " purged"; 9024cd33c48SRob Clark break; 9034cd33c48SRob Clark case MSM_MADV_DONTNEED: 904*0054eeb7SRob Clark stats->purgeable.count++; 905*0054eeb7SRob Clark stats->purgeable.size += obj->size; 9064cd33c48SRob Clark madv = " purgeable"; 9074cd33c48SRob Clark break; 9084cd33c48SRob Clark case MSM_MADV_WILLNEED: 9094cd33c48SRob Clark default: 9104cd33c48SRob Clark madv = ""; 9114cd33c48SRob Clark break; 9124cd33c48SRob Clark } 9134cd33c48SRob Clark 914575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9157198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9162c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 917667ce33eSRob Clark off, msm_obj->vaddr); 918667ce33eSRob Clark 9190815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 920667ce33eSRob Clark 921575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 922575f0485SJordan Crouse 923575f0485SJordan Crouse seq_puts(m, " vmas:"); 924575f0485SJordan Crouse 92525faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 92625faf2f2SRob Clark const char *name, *comm; 92725faf2f2SRob Clark if (vma->aspace) { 92825faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 92925faf2f2SRob Clark struct task_struct *task = 93025faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 93125faf2f2SRob Clark if (task) { 93225faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 93325faf2f2SRob Clark } else { 93425faf2f2SRob Clark comm = NULL; 93525faf2f2SRob Clark } 93625faf2f2SRob Clark name = aspace->name; 93725faf2f2SRob Clark } else { 93825faf2f2SRob Clark name = comm = NULL; 93925faf2f2SRob Clark } 94025faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 94125faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 94225faf2f2SRob Clark vma->aspace, vma->iova, 94325faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 9447ad0e8cfSJordan Crouse vma->inuse); 94525faf2f2SRob Clark kfree(comm); 94625faf2f2SRob Clark } 947575f0485SJordan Crouse 948575f0485SJordan Crouse seq_puts(m, "\n"); 949575f0485SJordan Crouse } 950b6295f9aSRob Clark 951b6295f9aSRob Clark rcu_read_lock(); 952b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 953b6295f9aSRob Clark if (fobj) { 954b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 955b6295f9aSRob Clark 956b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 957b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 958b6295f9aSRob Clark describe_fence(fence, "Shared", m); 959b6295f9aSRob Clark } 960b6295f9aSRob Clark } 961b6295f9aSRob Clark 962b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 963b6295f9aSRob Clark if (fence) 964b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 965b6295f9aSRob Clark rcu_read_unlock(); 9660e08270aSSushmita Susheelendra 967a6ae74c9SRob Clark msm_gem_unlock(obj); 968c8afe684SRob Clark } 969c8afe684SRob Clark 970c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 971c8afe684SRob Clark { 972528107c8SRob Clark struct msm_gem_stats stats = {}; 973c8afe684SRob Clark struct msm_gem_object *msm_obj; 974c8afe684SRob Clark 9750815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9766ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 977c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 978575f0485SJordan Crouse seq_puts(m, " "); 979528107c8SRob Clark msm_gem_describe(obj, m, &stats); 980c8afe684SRob Clark } 981c8afe684SRob Clark 982528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 983528107c8SRob Clark stats.all.count, stats.all.size); 984528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 985528107c8SRob Clark stats.active.count, stats.active.size); 986f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 987*0054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 988528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 989528107c8SRob Clark stats.purged.count, stats.purged.size); 990c8afe684SRob Clark } 991c8afe684SRob Clark #endif 992c8afe684SRob Clark 993eecd7fd8SEmil Velikov /* don't call directly! Use drm_gem_object_put_locked() and friends */ 994c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 995c8afe684SRob Clark { 996c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99748e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 99848e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 99948e7f183SKristian H. Kristensen 10006ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10016ed0897cSRob Clark list_del(&msm_obj->node); 10026ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10036ed0897cSRob Clark 1004d984457bSRob Clark mutex_lock(&priv->mm_lock); 1005cc8a4d5aSRob Clark if (msm_obj->dontneed) 1006*0054eeb7SRob Clark mark_unpurgeable(msm_obj); 1007c8afe684SRob Clark list_del(&msm_obj->mm_list); 1008d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1009c8afe684SRob Clark 1010a6ae74c9SRob Clark msm_gem_lock(obj); 1011c8afe684SRob Clark 1012c8afe684SRob Clark /* object should not be on active list: */ 1013c8afe684SRob Clark WARN_ON(is_active(msm_obj)); 1014c8afe684SRob Clark 10159b73bde3SIskren Chernev put_iova_spaces(obj); 1016c8afe684SRob Clark 101705b84911SRob Clark if (obj->import_attach) { 10188b6b7d84SDaniel Vetter WARN_ON(msm_obj->vaddr); 101905b84911SRob Clark 102005b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 102105b84911SRob Clark * ours, just free the array we allocated: 102205b84911SRob Clark */ 10232098105eSMichal Hocko kvfree(msm_obj->pages); 102405b84911SRob Clark 102557f04815SRob Clark put_iova_vmas(obj); 102657f04815SRob Clark 10276c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 10286c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 10296c0e3ea2SRob Clark */ 10306c0e3ea2SRob Clark msm_gem_unlock(obj); 10316c0e3ea2SRob Clark 1032f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 103305b84911SRob Clark } else { 1034599089c6SRob Clark msm_gem_vunmap(obj); 1035c8afe684SRob Clark put_pages(obj); 103657f04815SRob Clark put_iova_vmas(obj); 10376c0e3ea2SRob Clark msm_gem_unlock(obj); 103805b84911SRob Clark } 1039c8afe684SRob Clark 1040c8afe684SRob Clark drm_gem_object_release(obj); 1041c8afe684SRob Clark 1042c8afe684SRob Clark kfree(msm_obj); 1043c8afe684SRob Clark } 1044c8afe684SRob Clark 1045c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1046c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10470815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10480815d774SJordan Crouse char *name) 1049c8afe684SRob Clark { 1050c8afe684SRob Clark struct drm_gem_object *obj; 1051c8afe684SRob Clark int ret; 1052c8afe684SRob Clark 1053c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1054c8afe684SRob Clark 1055c8afe684SRob Clark if (IS_ERR(obj)) 1056c8afe684SRob Clark return PTR_ERR(obj); 1057c8afe684SRob Clark 10580815d774SJordan Crouse if (name) 10590815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10600815d774SJordan Crouse 1061c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1062c8afe684SRob Clark 1063c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1064f7d33950SEmil Velikov drm_gem_object_put(obj); 1065c8afe684SRob Clark 1066c8afe684SRob Clark return ret; 1067c8afe684SRob Clark } 1068c8afe684SRob Clark 10693c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10703c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10713c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10723c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10733c9edd9cSThomas Zimmermann }; 10743c9edd9cSThomas Zimmermann 10753c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10763c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10773c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10783c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10793c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10803c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10813c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 10823c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10833c9edd9cSThomas Zimmermann }; 10843c9edd9cSThomas Zimmermann 108505b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 108605b84911SRob Clark uint32_t size, uint32_t flags, 10873cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1088c8afe684SRob Clark { 1089c8afe684SRob Clark struct msm_gem_object *msm_obj; 1090c8afe684SRob Clark 1091c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1092c8afe684SRob Clark case MSM_BO_UNCACHED: 1093c8afe684SRob Clark case MSM_BO_CACHED: 1094c8afe684SRob Clark case MSM_BO_WC: 1095c8afe684SRob Clark break; 1096c8afe684SRob Clark default: 10976a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 1098c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 109905b84911SRob Clark return -EINVAL; 1100c8afe684SRob Clark } 1101c8afe684SRob Clark 1102667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 110305b84911SRob Clark if (!msm_obj) 110405b84911SRob Clark return -ENOMEM; 1105c8afe684SRob Clark 1106c8afe684SRob Clark msm_obj->flags = flags; 11074cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1108c8afe684SRob Clark 11097198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 11104b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11114b85f7f5SRob Clark 111205b84911SRob Clark *obj = &msm_obj->base; 11133c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 111405b84911SRob Clark 111505b84911SRob Clark return 0; 111605b84911SRob Clark } 111705b84911SRob Clark 11180e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 11190e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 112005b84911SRob Clark { 1121f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11223cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1123871d812aSRob Clark struct drm_gem_object *obj = NULL; 1124f4839bd5SRob Clark bool use_vram = false; 112505b84911SRob Clark int ret; 112605b84911SRob Clark 112705b84911SRob Clark size = PAGE_ALIGN(size); 112805b84911SRob Clark 1129c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1130f4839bd5SRob Clark use_vram = true; 113186f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1132f4839bd5SRob Clark use_vram = true; 1133f4839bd5SRob Clark 1134f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 1135f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1136f4839bd5SRob Clark 11371a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11381a5dff5dSJordan Crouse * infrastructure grumpy 11391a5dff5dSJordan Crouse */ 11401a5dff5dSJordan Crouse if (size == 0) 11411a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11421a5dff5dSJordan Crouse 11433cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 114405b84911SRob Clark if (ret) 114505b84911SRob Clark goto fail; 114605b84911SRob Clark 11473cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11483cbdc8d8SAkhil P Oommen 1149f4839bd5SRob Clark if (use_vram) { 11504b85f7f5SRob Clark struct msm_gem_vma *vma; 1151f4839bd5SRob Clark struct page **pages; 1152b3949a9aSHans Verkuil 1153a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1154a694ffedSIskren Chernev 1155a6ae74c9SRob Clark msm_gem_lock(obj); 1156f4839bd5SRob Clark 11574b85f7f5SRob Clark vma = add_vma(obj, NULL); 1158a6ae74c9SRob Clark msm_gem_unlock(obj); 11594b85f7f5SRob Clark if (IS_ERR(vma)) { 11604b85f7f5SRob Clark ret = PTR_ERR(vma); 11614b85f7f5SRob Clark goto fail; 11624b85f7f5SRob Clark } 11634b85f7f5SRob Clark 11644b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11654b85f7f5SRob Clark 116607fcad0dSIskren Chernev msm_gem_lock(obj); 1167f4839bd5SRob Clark pages = get_pages(obj); 116807fcad0dSIskren Chernev msm_gem_unlock(obj); 1169f4839bd5SRob Clark if (IS_ERR(pages)) { 1170f4839bd5SRob Clark ret = PTR_ERR(pages); 1171f4839bd5SRob Clark goto fail; 1172f4839bd5SRob Clark } 11734b85f7f5SRob Clark 11744b85f7f5SRob Clark vma->iova = physaddr(obj); 1175f4839bd5SRob Clark } else { 117605b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 117705b84911SRob Clark if (ret) 117805b84911SRob Clark goto fail; 11790abdba47SLucas Stach /* 11800abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11810abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11820abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11830abdba47SLucas Stach * expected if you're going to pin these pages. 11840abdba47SLucas Stach */ 11850abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1186871d812aSRob Clark } 118705b84911SRob Clark 1188d984457bSRob Clark mutex_lock(&priv->mm_lock); 11893edfa30fSRob Clark /* Initially obj is idle, obj->madv == WILLNEED: */ 11903edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 1191d984457bSRob Clark mutex_unlock(&priv->mm_lock); 11923cbdc8d8SAkhil P Oommen 11936ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11946ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11956ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11966ed0897cSRob Clark 119705b84911SRob Clark return obj; 119805b84911SRob Clark 119905b84911SRob Clark fail: 1200ce0a9dc0SRob Clark if (struct_mutex_locked) { 1201ce0a9dc0SRob Clark drm_gem_object_put_locked(obj); 1202ce0a9dc0SRob Clark } else { 1203f7d33950SEmil Velikov drm_gem_object_put(obj); 1204ce0a9dc0SRob Clark } 120505b84911SRob Clark return ERR_PTR(ret); 120605b84911SRob Clark } 120705b84911SRob Clark 12080e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 12090e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12100e08270aSSushmita Susheelendra { 12110e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 12120e08270aSSushmita Susheelendra } 12130e08270aSSushmita Susheelendra 12140e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 12150e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12160e08270aSSushmita Susheelendra { 12170e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 12180e08270aSSushmita Susheelendra } 12190e08270aSSushmita Susheelendra 122005b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 122179f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 122205b84911SRob Clark { 12233cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 122405b84911SRob Clark struct msm_gem_object *msm_obj; 122505b84911SRob Clark struct drm_gem_object *obj; 122679f0e202SRob Clark uint32_t size; 122705b84911SRob Clark int ret, npages; 122805b84911SRob Clark 1229871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1230c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12316a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1232871d812aSRob Clark return ERR_PTR(-EINVAL); 1233871d812aSRob Clark } 1234871d812aSRob Clark 123579f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 123605b84911SRob Clark 12373cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 123805b84911SRob Clark if (ret) 123905b84911SRob Clark goto fail; 124005b84911SRob Clark 124105b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 124205b84911SRob Clark 124305b84911SRob Clark npages = size / PAGE_SIZE; 124405b84911SRob Clark 124505b84911SRob Clark msm_obj = to_msm_bo(obj); 1246a6ae74c9SRob Clark msm_gem_lock(obj); 124705b84911SRob Clark msm_obj->sgt = sgt; 12482098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 124905b84911SRob Clark if (!msm_obj->pages) { 1250a6ae74c9SRob Clark msm_gem_unlock(obj); 125105b84911SRob Clark ret = -ENOMEM; 125205b84911SRob Clark goto fail; 125305b84911SRob Clark } 125405b84911SRob Clark 1255c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12560e08270aSSushmita Susheelendra if (ret) { 1257a6ae74c9SRob Clark msm_gem_unlock(obj); 125805b84911SRob Clark goto fail; 12590e08270aSSushmita Susheelendra } 126005b84911SRob Clark 1261a6ae74c9SRob Clark msm_gem_unlock(obj); 12623cbdc8d8SAkhil P Oommen 1263d984457bSRob Clark mutex_lock(&priv->mm_lock); 12643edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 1265d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12663cbdc8d8SAkhil P Oommen 12676ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12686ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12696ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12706ed0897cSRob Clark 1271c8afe684SRob Clark return obj; 1272c8afe684SRob Clark 1273c8afe684SRob Clark fail: 1274f7d33950SEmil Velikov drm_gem_object_put(obj); 1275c8afe684SRob Clark return ERR_PTR(ret); 1276c8afe684SRob Clark } 12778223286dSJordan Crouse 12788223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12798223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12808223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 12818223286dSJordan Crouse { 12828223286dSJordan Crouse void *vaddr; 12838223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 12848223286dSJordan Crouse int ret; 12858223286dSJordan Crouse 12868223286dSJordan Crouse if (IS_ERR(obj)) 12878223286dSJordan Crouse return ERR_CAST(obj); 12888223286dSJordan Crouse 12898223286dSJordan Crouse if (iova) { 12909fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 129193f7abf1SJordan Crouse if (ret) 129293f7abf1SJordan Crouse goto err; 12938223286dSJordan Crouse } 12948223286dSJordan Crouse 12958223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1296c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12977ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 129893f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 129993f7abf1SJordan Crouse goto err; 13008223286dSJordan Crouse } 13018223286dSJordan Crouse 13028223286dSJordan Crouse if (bo) 13038223286dSJordan Crouse *bo = obj; 13048223286dSJordan Crouse 13058223286dSJordan Crouse return vaddr; 130693f7abf1SJordan Crouse err: 130793f7abf1SJordan Crouse if (locked) 1308eecd7fd8SEmil Velikov drm_gem_object_put_locked(obj); 130993f7abf1SJordan Crouse else 1310f7d33950SEmil Velikov drm_gem_object_put(obj); 131193f7abf1SJordan Crouse 131293f7abf1SJordan Crouse return ERR_PTR(ret); 131393f7abf1SJordan Crouse 13148223286dSJordan Crouse } 13158223286dSJordan Crouse 13168223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13178223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13188223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13198223286dSJordan Crouse { 13208223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 13218223286dSJordan Crouse } 13228223286dSJordan Crouse 13238223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 13248223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13258223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13268223286dSJordan Crouse { 13278223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 13288223286dSJordan Crouse } 13291e29dff0SJordan Crouse 13301e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 13311e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 13321e29dff0SJordan Crouse { 13331e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13341e29dff0SJordan Crouse return; 13351e29dff0SJordan Crouse 13361e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13377ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 13381e29dff0SJordan Crouse 13391e29dff0SJordan Crouse if (locked) 1340eecd7fd8SEmil Velikov drm_gem_object_put_locked(bo); 13411e29dff0SJordan Crouse else 1342f7d33950SEmil Velikov drm_gem_object_put(bo); 13431e29dff0SJordan Crouse } 13440815d774SJordan Crouse 13450815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13460815d774SJordan Crouse { 13470815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13480815d774SJordan Crouse va_list ap; 13490815d774SJordan Crouse 13500815d774SJordan Crouse if (!fmt) 13510815d774SJordan Crouse return; 13520815d774SJordan Crouse 13530815d774SJordan Crouse va_start(ap, fmt); 13540815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13550815d774SJordan Crouse va_end(ap); 13560815d774SJordan Crouse } 1357