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 210e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj); 220e08270aSSushmita Susheelendra 230e08270aSSushmita Susheelendra 24871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 25871d812aSRob Clark { 26871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 27871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 28871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 29871d812aSRob Clark priv->vram.paddr; 30871d812aSRob Clark } 31871d812aSRob Clark 32072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 33072f1f91SRob Clark { 34072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 35072f1f91SRob Clark return !msm_obj->vram_node; 36072f1f91SRob Clark } 37072f1f91SRob Clark 383de433c5SRob Clark /* 393de433c5SRob Clark * Cache sync.. this is a bit over-complicated, to fit dma-mapping 403de433c5SRob Clark * API. Really GPU cache is out of scope here (handled on cmdstream) 413de433c5SRob Clark * and all we need to do is invalidate newly allocated pages before 423de433c5SRob Clark * mapping to CPU as uncached/writecombine. 433de433c5SRob Clark * 443de433c5SRob Clark * On top of this, we have the added headache, that depending on 453de433c5SRob Clark * display generation, the display's iommu may be wired up to either 463de433c5SRob Clark * the toplevel drm device (mdss), or to the mdp sub-node, meaning 473de433c5SRob Clark * that here we either have dma-direct or iommu ops. 483de433c5SRob Clark * 493de433c5SRob Clark * Let this be a cautionary tail of abstraction gone wrong. 503de433c5SRob Clark */ 513de433c5SRob Clark 523de433c5SRob Clark static void sync_for_device(struct msm_gem_object *msm_obj) 533de433c5SRob Clark { 543de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 553de433c5SRob Clark 567690a33fSMarek Szyprowski dma_map_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 573de433c5SRob Clark } 583de433c5SRob Clark 593de433c5SRob Clark static void sync_for_cpu(struct msm_gem_object *msm_obj) 603de433c5SRob Clark { 613de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 623de433c5SRob Clark 637690a33fSMarek Szyprowski dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 643de433c5SRob Clark } 653de433c5SRob Clark 66871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 670e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 68871d812aSRob Clark { 69871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 70871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 71871d812aSRob Clark dma_addr_t paddr; 72871d812aSRob Clark struct page **p; 73871d812aSRob Clark int ret, i; 74871d812aSRob Clark 752098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 76871d812aSRob Clark if (!p) 77871d812aSRob Clark return ERR_PTR(-ENOMEM); 78871d812aSRob Clark 790e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 804e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 810e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 82871d812aSRob Clark if (ret) { 832098105eSMichal Hocko kvfree(p); 84871d812aSRob Clark return ERR_PTR(ret); 85871d812aSRob Clark } 86871d812aSRob Clark 87871d812aSRob Clark paddr = physaddr(obj); 88871d812aSRob Clark for (i = 0; i < npages; i++) { 89871d812aSRob Clark p[i] = phys_to_page(paddr); 90871d812aSRob Clark paddr += PAGE_SIZE; 91871d812aSRob Clark } 92871d812aSRob Clark 93871d812aSRob Clark return p; 94871d812aSRob Clark } 95c8afe684SRob Clark 96c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 97c8afe684SRob Clark { 98c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99c8afe684SRob Clark 100c8afe684SRob Clark if (!msm_obj->pages) { 101c8afe684SRob Clark struct drm_device *dev = obj->dev; 102871d812aSRob Clark struct page **p; 103c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 104c8afe684SRob Clark 105072f1f91SRob Clark if (use_pages(obj)) 1060cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 107871d812aSRob Clark else 108871d812aSRob Clark p = get_pages_vram(obj, npages); 109871d812aSRob Clark 110c8afe684SRob Clark if (IS_ERR(p)) { 1116a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 112c8afe684SRob Clark PTR_ERR(p)); 113c8afe684SRob Clark return p; 114c8afe684SRob Clark } 115c8afe684SRob Clark 11662e3a3e3SPrakash Kamliya msm_obj->pages = p; 11762e3a3e3SPrakash Kamliya 118707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1191f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 12062e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 121c8afe684SRob Clark 1226a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 12362e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 12462e3a3e3SPrakash Kamliya return ptr; 12562e3a3e3SPrakash Kamliya } 126c8afe684SRob Clark 127c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 128c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 129c8afe684SRob Clark */ 130c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1313de433c5SRob Clark sync_for_device(msm_obj); 132c8afe684SRob Clark } 133c8afe684SRob Clark 134c8afe684SRob Clark return msm_obj->pages; 135c8afe684SRob Clark } 136c8afe684SRob Clark 1370e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1380e08270aSSushmita Susheelendra { 1390e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1400e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1410e08270aSSushmita Susheelendra 1420e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1430e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1440e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1450e08270aSSushmita Susheelendra 1460e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1470e08270aSSushmita Susheelendra } 1480e08270aSSushmita Susheelendra 149c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 150c8afe684SRob Clark { 151c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 152c8afe684SRob Clark 153c8afe684SRob Clark if (msm_obj->pages) { 1543976626eSBen Hutchings if (msm_obj->sgt) { 1553976626eSBen Hutchings /* For non-cached buffers, ensure the new 1563976626eSBen Hutchings * pages are clean because display controller, 1573976626eSBen Hutchings * GPU, etc. are not coherent: 158c8afe684SRob Clark */ 159c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1603de433c5SRob Clark sync_for_cpu(msm_obj); 16162e3a3e3SPrakash Kamliya 162c8afe684SRob Clark sg_free_table(msm_obj->sgt); 163c8afe684SRob Clark kfree(msm_obj->sgt); 1643976626eSBen Hutchings } 165c8afe684SRob Clark 166072f1f91SRob Clark if (use_pages(obj)) 167c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1680e08270aSSushmita Susheelendra else 1690e08270aSSushmita Susheelendra put_pages_vram(obj); 170871d812aSRob Clark 171c8afe684SRob Clark msm_obj->pages = NULL; 172c8afe684SRob Clark } 173c8afe684SRob Clark } 174c8afe684SRob Clark 17505b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 17605b84911SRob Clark { 1770e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 17805b84911SRob Clark struct page **p; 1790e08270aSSushmita Susheelendra 180a6ae74c9SRob Clark msm_gem_lock(obj); 1810e08270aSSushmita Susheelendra 1820e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 183a6ae74c9SRob Clark msm_gem_unlock(obj); 1840e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1850e08270aSSushmita Susheelendra } 1860e08270aSSushmita Susheelendra 18705b84911SRob Clark p = get_pages(obj); 188a6ae74c9SRob Clark msm_gem_unlock(obj); 18905b84911SRob Clark return p; 19005b84911SRob Clark } 19105b84911SRob Clark 19205b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 19305b84911SRob Clark { 19405b84911SRob Clark /* when we start tracking the pin count, then do something here */ 19505b84911SRob Clark } 19605b84911SRob Clark 197c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 198c8afe684SRob Clark struct vm_area_struct *vma) 199c8afe684SRob Clark { 200c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 201c8afe684SRob Clark 202c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 203c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 204c8afe684SRob Clark 205c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 206c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 207c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 208c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 209c8afe684SRob Clark } else { 210c8afe684SRob Clark /* 211c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 212c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 213c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 214c8afe684SRob Clark */ 215c8afe684SRob Clark fput(vma->vm_file); 216c8afe684SRob Clark get_file(obj->filp); 217c8afe684SRob Clark vma->vm_pgoff = 0; 218c8afe684SRob Clark vma->vm_file = obj->filp; 219c8afe684SRob Clark 220c8afe684SRob Clark vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); 221c8afe684SRob Clark } 222c8afe684SRob Clark 223c8afe684SRob Clark return 0; 224c8afe684SRob Clark } 225c8afe684SRob Clark 226c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 227c8afe684SRob Clark { 228c8afe684SRob Clark int ret; 229c8afe684SRob Clark 230c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 231c8afe684SRob Clark if (ret) { 232c8afe684SRob Clark DBG("mmap failed: %d", ret); 233c8afe684SRob Clark return ret; 234c8afe684SRob Clark } 235c8afe684SRob Clark 236c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 237c8afe684SRob Clark } 238c8afe684SRob Clark 239a5f74ec7SSouptick Joarder vm_fault_t msm_gem_fault(struct vm_fault *vmf) 240c8afe684SRob Clark { 24111bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 242c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2430e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 244c8afe684SRob Clark struct page **pages; 245c8afe684SRob Clark unsigned long pfn; 246c8afe684SRob Clark pgoff_t pgoff; 247a5f74ec7SSouptick Joarder int err; 248a5f74ec7SSouptick Joarder vm_fault_t ret; 249c8afe684SRob Clark 2500e08270aSSushmita Susheelendra /* 2510e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2520e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 253d78d383aSRob Clark */ 254a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 255a5f74ec7SSouptick Joarder if (err) { 256a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 257c8afe684SRob Clark goto out; 258a5f74ec7SSouptick Joarder } 259c8afe684SRob Clark 2600e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 261a6ae74c9SRob Clark msm_gem_unlock(obj); 2620e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2630e08270aSSushmita Susheelendra } 2640e08270aSSushmita Susheelendra 265c8afe684SRob Clark /* make sure we have pages attached now */ 266c8afe684SRob Clark pages = get_pages(obj); 267c8afe684SRob Clark if (IS_ERR(pages)) { 268a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 269c8afe684SRob Clark goto out_unlock; 270c8afe684SRob Clark } 271c8afe684SRob Clark 272c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2731a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 274c8afe684SRob Clark 275871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 276c8afe684SRob Clark 2771a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 278c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 279c8afe684SRob Clark 280a5f74ec7SSouptick Joarder ret = vmf_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 281c8afe684SRob Clark out_unlock: 282a6ae74c9SRob Clark msm_gem_unlock(obj); 283c8afe684SRob Clark out: 284a5f74ec7SSouptick Joarder return ret; 285c8afe684SRob Clark } 286c8afe684SRob Clark 287c8afe684SRob Clark /** get mmap offset */ 288c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 289c8afe684SRob Clark { 290c8afe684SRob Clark struct drm_device *dev = obj->dev; 291c8afe684SRob Clark int ret; 292c8afe684SRob Clark 293a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 294c8afe684SRob Clark 295c8afe684SRob Clark /* Make it mmapable */ 296c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 297c8afe684SRob Clark 298c8afe684SRob Clark if (ret) { 2996a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 300c8afe684SRob Clark return 0; 301c8afe684SRob Clark } 302c8afe684SRob Clark 303c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 304c8afe684SRob Clark } 305c8afe684SRob Clark 306c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 307c8afe684SRob Clark { 308c8afe684SRob Clark uint64_t offset; 3090e08270aSSushmita Susheelendra 310a6ae74c9SRob Clark msm_gem_lock(obj); 311c8afe684SRob Clark offset = mmap_offset(obj); 312a6ae74c9SRob Clark msm_gem_unlock(obj); 313c8afe684SRob Clark return offset; 314c8afe684SRob Clark } 315c8afe684SRob Clark 3164b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3174b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3184b85f7f5SRob Clark { 3194b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3204b85f7f5SRob Clark struct msm_gem_vma *vma; 3214b85f7f5SRob Clark 322a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 3230e08270aSSushmita Susheelendra 3244b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3254b85f7f5SRob Clark if (!vma) 3264b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3274b85f7f5SRob Clark 3284b85f7f5SRob Clark vma->aspace = aspace; 3294b85f7f5SRob Clark 3304b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3314b85f7f5SRob Clark 3324b85f7f5SRob Clark return vma; 3334b85f7f5SRob Clark } 3344b85f7f5SRob Clark 3354b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3364b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3374b85f7f5SRob Clark { 3384b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3394b85f7f5SRob Clark struct msm_gem_vma *vma; 3404b85f7f5SRob Clark 341a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 3424b85f7f5SRob Clark 3434b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3444b85f7f5SRob Clark if (vma->aspace == aspace) 3454b85f7f5SRob Clark return vma; 3464b85f7f5SRob Clark } 3474b85f7f5SRob Clark 3484b85f7f5SRob Clark return NULL; 3494b85f7f5SRob Clark } 3504b85f7f5SRob Clark 3514b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3524b85f7f5SRob Clark { 3534b85f7f5SRob Clark if (!vma) 3544b85f7f5SRob Clark return; 3554b85f7f5SRob Clark 3564b85f7f5SRob Clark list_del(&vma->list); 3574b85f7f5SRob Clark kfree(vma); 3584b85f7f5SRob Clark } 3594b85f7f5SRob Clark 360a6ae74c9SRob Clark /* Called with msm_obj locked */ 3614fe5f65eSRob Clark static void 3624fe5f65eSRob Clark put_iova(struct drm_gem_object *obj) 3634fe5f65eSRob Clark { 3644fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3654b85f7f5SRob Clark struct msm_gem_vma *vma, *tmp; 3664fe5f65eSRob Clark 367a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 3684fe5f65eSRob Clark 3694b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 370d67f1b6dSBrian Masney if (vma->aspace) { 3717ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 3727ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 373d67f1b6dSBrian Masney } 3744b85f7f5SRob Clark del_vma(vma); 3754fe5f65eSRob Clark } 3764fe5f65eSRob Clark } 3774fe5f65eSRob Clark 3788117e5e5SRob Clark static int get_iova_locked(struct drm_gem_object *obj, 379d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 380d3b8877eSJonathan Marek u64 range_start, u64 range_end) 381c8afe684SRob Clark { 3824b85f7f5SRob Clark struct msm_gem_vma *vma; 383c8afe684SRob Clark int ret = 0; 384c8afe684SRob Clark 385a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 386cb1e3818SRob Clark 3874b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 388871d812aSRob Clark 3894b85f7f5SRob Clark if (!vma) { 3904b85f7f5SRob Clark vma = add_vma(obj, aspace); 391c0ee9794SJordan Crouse if (IS_ERR(vma)) 392c0ee9794SJordan Crouse return PTR_ERR(vma); 3934b85f7f5SRob Clark 394d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 395d3b8877eSJonathan Marek range_start, range_end); 396c0ee9794SJordan Crouse if (ret) { 397c0ee9794SJordan Crouse del_vma(vma); 398c0ee9794SJordan Crouse return ret; 399c8afe684SRob Clark } 4004b85f7f5SRob Clark } 4014b85f7f5SRob Clark 4024b85f7f5SRob Clark *iova = vma->iova; 4034b85f7f5SRob Clark return 0; 404c0ee9794SJordan Crouse } 4054b85f7f5SRob Clark 406c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 407c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 408c0ee9794SJordan Crouse { 409c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 410c0ee9794SJordan Crouse struct msm_gem_vma *vma; 411c0ee9794SJordan Crouse struct page **pages; 412bbc2cd07SRob Clark int prot = IOMMU_READ; 413bbc2cd07SRob Clark 414bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 415bbc2cd07SRob Clark prot |= IOMMU_WRITE; 416c0ee9794SJordan Crouse 4170b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4180b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4190b462d7aSJonathan Marek 420a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 421c0ee9794SJordan Crouse 422c0ee9794SJordan Crouse if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 423c0ee9794SJordan Crouse return -EBUSY; 424c0ee9794SJordan Crouse 425c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 426c0ee9794SJordan Crouse if (WARN_ON(!vma)) 427c0ee9794SJordan Crouse return -EINVAL; 428c0ee9794SJordan Crouse 429c0ee9794SJordan Crouse pages = get_pages(obj); 430c0ee9794SJordan Crouse if (IS_ERR(pages)) 431c0ee9794SJordan Crouse return PTR_ERR(pages); 432c0ee9794SJordan Crouse 433bbc2cd07SRob Clark return msm_gem_map_vma(aspace, vma, prot, 434bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 435c0ee9794SJordan Crouse } 436c0ee9794SJordan Crouse 437*e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 438d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 439d3b8877eSJonathan Marek u64 range_start, u64 range_end) 440c0ee9794SJordan Crouse { 441c0ee9794SJordan Crouse u64 local; 442c0ee9794SJordan Crouse int ret; 443c0ee9794SJordan Crouse 444*e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 445c0ee9794SJordan Crouse 4468117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 447d3b8877eSJonathan Marek range_start, range_end); 448c0ee9794SJordan Crouse 449c0ee9794SJordan Crouse if (!ret) 450c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 451c0ee9794SJordan Crouse 452c0ee9794SJordan Crouse if (!ret) 453c0ee9794SJordan Crouse *iova = local; 454c0ee9794SJordan Crouse 455c8afe684SRob Clark return ret; 456c8afe684SRob Clark } 457c8afe684SRob Clark 458*e4b87d22SRob Clark /* 459*e4b87d22SRob Clark * get iova and pin it. Should have a matching put 460*e4b87d22SRob Clark * limits iova to specified range (in pages) 461*e4b87d22SRob Clark */ 462*e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 463*e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 464*e4b87d22SRob Clark u64 range_start, u64 range_end) 465*e4b87d22SRob Clark { 466*e4b87d22SRob Clark int ret; 467*e4b87d22SRob Clark 468*e4b87d22SRob Clark msm_gem_lock(obj); 469*e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 470*e4b87d22SRob Clark msm_gem_unlock(obj); 471*e4b87d22SRob Clark 472*e4b87d22SRob Clark return ret; 473*e4b87d22SRob Clark } 474*e4b87d22SRob Clark 475*e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 476*e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 477*e4b87d22SRob Clark { 478*e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 479*e4b87d22SRob Clark } 480*e4b87d22SRob Clark 481d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 482d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 483d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 484d3b8877eSJonathan Marek { 485d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 486d3b8877eSJonathan Marek } 487d3b8877eSJonathan Marek 4887ad0e8cfSJordan Crouse /* 4897ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 4907ad0e8cfSJordan Crouse * valid for the life of the object 4917ad0e8cfSJordan Crouse */ 4929fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 4939fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 4949fe041f6SJordan Crouse { 4959fe041f6SJordan Crouse int ret; 4969fe041f6SJordan Crouse 497a6ae74c9SRob Clark msm_gem_lock(obj); 4988117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 499a6ae74c9SRob Clark msm_gem_unlock(obj); 5009fe041f6SJordan Crouse 5019fe041f6SJordan Crouse return ret; 5029fe041f6SJordan Crouse } 5039fe041f6SJordan Crouse 5042638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5059fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5062638d90aSRob Clark */ 5078bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5088bdcd949SRob Clark struct msm_gem_address_space *aspace) 5092638d90aSRob Clark { 5104b85f7f5SRob Clark struct msm_gem_vma *vma; 5114b85f7f5SRob Clark 512a6ae74c9SRob Clark msm_gem_lock(obj); 5134b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 514a6ae74c9SRob Clark msm_gem_unlock(obj); 5154b85f7f5SRob Clark WARN_ON(!vma); 5164b85f7f5SRob Clark 5174b85f7f5SRob Clark return vma ? vma->iova : 0; 5182638d90aSRob Clark } 5192638d90aSRob Clark 5207ad0e8cfSJordan Crouse /* 521*e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 522*e4b87d22SRob Clark */ 523*e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 524*e4b87d22SRob Clark struct msm_gem_address_space *aspace) 525*e4b87d22SRob Clark { 526*e4b87d22SRob Clark struct msm_gem_vma *vma; 527*e4b87d22SRob Clark 528*e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 529*e4b87d22SRob Clark 530*e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 531*e4b87d22SRob Clark 532*e4b87d22SRob Clark if (!WARN_ON(!vma)) 533*e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 534*e4b87d22SRob Clark } 535*e4b87d22SRob Clark 536*e4b87d22SRob Clark /* 5377ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5387ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5397ad0e8cfSJordan Crouse * to get rid of it 5407ad0e8cfSJordan Crouse */ 5417ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5428bdcd949SRob Clark struct msm_gem_address_space *aspace) 543c8afe684SRob Clark { 544a6ae74c9SRob Clark msm_gem_lock(obj); 545*e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 546a6ae74c9SRob Clark msm_gem_unlock(obj); 547c8afe684SRob Clark } 548c8afe684SRob Clark 549c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 550c8afe684SRob Clark struct drm_mode_create_dumb *args) 551c8afe684SRob Clark { 552c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 553c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 554c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5550815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 556c8afe684SRob Clark } 557c8afe684SRob Clark 558c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 559c8afe684SRob Clark uint32_t handle, uint64_t *offset) 560c8afe684SRob Clark { 561c8afe684SRob Clark struct drm_gem_object *obj; 562c8afe684SRob Clark int ret = 0; 563c8afe684SRob Clark 564c8afe684SRob Clark /* GEM does all our handle to object mapping */ 565a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 566c8afe684SRob Clark if (obj == NULL) { 567c8afe684SRob Clark ret = -ENOENT; 568c8afe684SRob Clark goto fail; 569c8afe684SRob Clark } 570c8afe684SRob Clark 571c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 572c8afe684SRob Clark 573f7d33950SEmil Velikov drm_gem_object_put(obj); 574c8afe684SRob Clark 575c8afe684SRob Clark fail: 576c8afe684SRob Clark return ret; 577c8afe684SRob Clark } 578c8afe684SRob Clark 579fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 580c8afe684SRob Clark { 5810e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5820e08270aSSushmita Susheelendra int ret = 0; 5830e08270aSSushmita Susheelendra 584*e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 585*e4b87d22SRob Clark 5868b6b7d84SDaniel Vetter if (obj->import_attach) 5878b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 5888b6b7d84SDaniel Vetter 589fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 5906a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 591fad33f4bSRob Clark msm_obj->madv, madv); 5920e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 593c8afe684SRob Clark } 594c8afe684SRob Clark 5950e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 596a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 5970e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 5980e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 599a6ae74c9SRob Clark * hold msm_obj lock) 6000e08270aSSushmita Susheelendra */ 6010e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6020e08270aSSushmita Susheelendra 6030e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6040e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6050e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6060e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6070e08270aSSushmita Susheelendra goto fail; 6080e08270aSSushmita Susheelendra } 6090e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 6100e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 6110e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6120e08270aSSushmita Susheelendra ret = -ENOMEM; 6130e08270aSSushmita Susheelendra goto fail; 6140e08270aSSushmita Susheelendra } 6150e08270aSSushmita Susheelendra } 6160e08270aSSushmita Susheelendra 6170e08270aSSushmita Susheelendra return msm_obj->vaddr; 6180e08270aSSushmita Susheelendra 6190e08270aSSushmita Susheelendra fail: 620e1e9db2cSRob Clark msm_obj->vmap_count--; 6210e08270aSSushmita Susheelendra return ERR_PTR(ret); 62218f23049SRob Clark } 62318f23049SRob Clark 624*e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 625*e4b87d22SRob Clark { 626*e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 627*e4b87d22SRob Clark } 628*e4b87d22SRob Clark 629fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 630fad33f4bSRob Clark { 631*e4b87d22SRob Clark void *ret; 632*e4b87d22SRob Clark 633*e4b87d22SRob Clark msm_gem_lock(obj); 634*e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 635*e4b87d22SRob Clark msm_gem_unlock(obj); 636*e4b87d22SRob Clark 637*e4b87d22SRob Clark return ret; 638fad33f4bSRob Clark } 639fad33f4bSRob Clark 640fad33f4bSRob Clark /* 641fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 642fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 643fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 644fad33f4bSRob Clark * active list. 645fad33f4bSRob Clark */ 646fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 647fad33f4bSRob Clark { 648*e4b87d22SRob Clark void *ret; 649*e4b87d22SRob Clark 650*e4b87d22SRob Clark msm_gem_lock(obj); 651*e4b87d22SRob Clark ret = get_vaddr(obj, __MSM_MADV_PURGED); 652*e4b87d22SRob Clark msm_gem_unlock(obj); 653*e4b87d22SRob Clark 654*e4b87d22SRob Clark return ret; 655*e4b87d22SRob Clark } 656*e4b87d22SRob Clark 657*e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 658*e4b87d22SRob Clark { 659*e4b87d22SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 660*e4b87d22SRob Clark 661*e4b87d22SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 662*e4b87d22SRob Clark WARN_ON(msm_obj->vmap_count < 1); 663*e4b87d22SRob Clark 664*e4b87d22SRob Clark msm_obj->vmap_count--; 665fad33f4bSRob Clark } 666fad33f4bSRob Clark 66718f23049SRob Clark void msm_gem_put_vaddr(struct drm_gem_object *obj) 66818f23049SRob Clark { 669a6ae74c9SRob Clark msm_gem_lock(obj); 670*e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 671a6ae74c9SRob Clark msm_gem_unlock(obj); 67218f23049SRob Clark } 67318f23049SRob Clark 6744cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6754cd33c48SRob Clark * false or -errno. 6764cd33c48SRob Clark */ 6774cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6784cd33c48SRob Clark { 6794cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6804cd33c48SRob Clark 681a6ae74c9SRob Clark msm_gem_lock(obj); 6820e08270aSSushmita Susheelendra 6834cd33c48SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 6844cd33c48SRob Clark 6854cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 6864cd33c48SRob Clark msm_obj->madv = madv; 6874cd33c48SRob Clark 6880e08270aSSushmita Susheelendra madv = msm_obj->madv; 6890e08270aSSushmita Susheelendra 690a6ae74c9SRob Clark msm_gem_unlock(obj); 6910e08270aSSushmita Susheelendra 6920e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 6934cd33c48SRob Clark } 6944cd33c48SRob Clark 6950e08270aSSushmita Susheelendra void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) 69668209390SRob Clark { 69768209390SRob Clark struct drm_device *dev = obj->dev; 69868209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69968209390SRob Clark 70068209390SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 70168209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 70268209390SRob Clark WARN_ON(obj->import_attach); 70368209390SRob Clark 7040e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 7050e08270aSSushmita Susheelendra 70668209390SRob Clark put_iova(obj); 70768209390SRob Clark 7080e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 70968209390SRob Clark 71068209390SRob Clark put_pages(obj); 71168209390SRob Clark 71268209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 71368209390SRob Clark 71468209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 71568209390SRob Clark drm_gem_free_mmap_offset(obj); 71668209390SRob Clark 71768209390SRob Clark /* Our goal here is to return as much of the memory as 71868209390SRob Clark * is possible back to the system as we are called from OOM. 71968209390SRob Clark * To do this we must instruct the shmfs to drop all of its 72068209390SRob Clark * backing pages, *now*. 72168209390SRob Clark */ 72268209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 72368209390SRob Clark 72468209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 72568209390SRob Clark 0, (loff_t)-1); 7260e08270aSSushmita Susheelendra 727a6ae74c9SRob Clark msm_gem_unlock(obj); 72868209390SRob Clark } 72968209390SRob Clark 7300e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj) 731e1e9db2cSRob Clark { 732e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 733e1e9db2cSRob Clark 734a6ae74c9SRob Clark WARN_ON(!msm_gem_is_locked(obj)); 7350e08270aSSushmita Susheelendra 736e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 737e1e9db2cSRob Clark return; 738e1e9db2cSRob Clark 739e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 740e1e9db2cSRob Clark msm_obj->vaddr = NULL; 741e1e9db2cSRob Clark } 742e1e9db2cSRob Clark 7430e08270aSSushmita Susheelendra void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) 7440e08270aSSushmita Susheelendra { 7450e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7460e08270aSSushmita Susheelendra 7470e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 7480e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 749a6ae74c9SRob Clark msm_gem_unlock(obj); 7500e08270aSSushmita Susheelendra } 7510e08270aSSushmita Susheelendra 752b6295f9aSRob Clark /* must be called before _move_to_active().. */ 753b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 754b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 755b6295f9aSRob Clark { 75652791eeeSChristian König struct dma_resv_list *fobj; 757f54d1867SChris Wilson struct dma_fence *fence; 758b6295f9aSRob Clark int i, ret; 759b6295f9aSRob Clark 76052791eeeSChristian König fobj = dma_resv_get_list(obj->resv); 761b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 76252791eeeSChristian König fence = dma_resv_get_excl(obj->resv); 763b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 764b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 765f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 766b6295f9aSRob Clark if (ret) 767b6295f9aSRob Clark return ret; 768b6295f9aSRob Clark } 769b6295f9aSRob Clark } 770b6295f9aSRob Clark 771b6295f9aSRob Clark if (!exclusive || !fobj) 772b6295f9aSRob Clark return 0; 773b6295f9aSRob Clark 774b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 775b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 77652791eeeSChristian König dma_resv_held(obj->resv)); 777b6295f9aSRob Clark if (fence->context != fctx->context) { 778f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 779b6295f9aSRob Clark if (ret) 780b6295f9aSRob Clark return ret; 781b6295f9aSRob Clark } 782b6295f9aSRob Clark } 783b6295f9aSRob Clark 784b6295f9aSRob Clark return 0; 785b6295f9aSRob Clark } 786b6295f9aSRob Clark 7879d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7887198e6b0SRob Clark { 7897198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7909d8baa2bSAkhil P Oommen WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 7914cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 7929d8baa2bSAkhil P Oommen 7939d8baa2bSAkhil P Oommen if (!atomic_fetch_inc(&msm_obj->active_count)) { 7947198e6b0SRob Clark msm_obj->gpu = gpu; 7957198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7967198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 7977198e6b0SRob Clark } 7989d8baa2bSAkhil P Oommen } 7997198e6b0SRob Clark 8009d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8017198e6b0SRob Clark { 8027198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8039d8baa2bSAkhil P Oommen struct msm_drm_private *priv = obj->dev->dev_private; 8047198e6b0SRob Clark 8059d8baa2bSAkhil P Oommen WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 8067198e6b0SRob Clark 8079d8baa2bSAkhil P Oommen if (!atomic_dec_return(&msm_obj->active_count)) { 8087198e6b0SRob Clark msm_obj->gpu = NULL; 8097198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 8107198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 8117198e6b0SRob Clark } 8129d8baa2bSAkhil P Oommen } 8137198e6b0SRob Clark 814ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 815ba00c3f2SRob Clark { 816b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 817f755e227SChris Wilson unsigned long remain = 818f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 819f755e227SChris Wilson long ret; 820b6295f9aSRob Clark 82152791eeeSChristian König ret = dma_resv_wait_timeout_rcu(obj->resv, write, 822f755e227SChris Wilson true, remain); 823f755e227SChris Wilson if (ret == 0) 824f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 825f755e227SChris Wilson else if (ret < 0) 826f755e227SChris Wilson return ret; 827ba00c3f2SRob Clark 8287198e6b0SRob Clark /* TODO cache maintenance */ 8297198e6b0SRob Clark 830b6295f9aSRob Clark return 0; 8317198e6b0SRob Clark } 8327198e6b0SRob Clark 8337198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8347198e6b0SRob Clark { 8357198e6b0SRob Clark /* TODO cache maintenance */ 836c8afe684SRob Clark return 0; 837c8afe684SRob Clark } 838c8afe684SRob Clark 839c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 840f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 841b6295f9aSRob Clark struct seq_file *m) 842b6295f9aSRob Clark { 843f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 844a3115621SDave Airlie seq_printf(m, "\t%9s: %s %s seq %llu\n", type, 845b6295f9aSRob Clark fence->ops->get_driver_name(fence), 846b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 847b6295f9aSRob Clark fence->seqno); 848b6295f9aSRob Clark } 849b6295f9aSRob Clark 850c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 851c8afe684SRob Clark { 852c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 85352791eeeSChristian König struct dma_resv *robj = obj->resv; 85452791eeeSChristian König struct dma_resv_list *fobj; 855f54d1867SChris Wilson struct dma_fence *fence; 8564b85f7f5SRob Clark struct msm_gem_vma *vma; 857c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8584cd33c48SRob Clark const char *madv; 859c8afe684SRob Clark 860a6ae74c9SRob Clark msm_gem_lock(obj); 861b6295f9aSRob Clark 8624cd33c48SRob Clark switch (msm_obj->madv) { 8634cd33c48SRob Clark case __MSM_MADV_PURGED: 8644cd33c48SRob Clark madv = " purged"; 8654cd33c48SRob Clark break; 8664cd33c48SRob Clark case MSM_MADV_DONTNEED: 8674cd33c48SRob Clark madv = " purgeable"; 8684cd33c48SRob Clark break; 8694cd33c48SRob Clark case MSM_MADV_WILLNEED: 8704cd33c48SRob Clark default: 8714cd33c48SRob Clark madv = ""; 8724cd33c48SRob Clark break; 8734cd33c48SRob Clark } 8744cd33c48SRob Clark 875575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 8767198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 8772c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 878667ce33eSRob Clark off, msm_obj->vaddr); 879667ce33eSRob Clark 8800815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 881667ce33eSRob Clark 882575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 883575f0485SJordan Crouse 884575f0485SJordan Crouse seq_puts(m, " vmas:"); 885575f0485SJordan Crouse 88625faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 88725faf2f2SRob Clark const char *name, *comm; 88825faf2f2SRob Clark if (vma->aspace) { 88925faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 89025faf2f2SRob Clark struct task_struct *task = 89125faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 89225faf2f2SRob Clark if (task) { 89325faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 89425faf2f2SRob Clark } else { 89525faf2f2SRob Clark comm = NULL; 89625faf2f2SRob Clark } 89725faf2f2SRob Clark name = aspace->name; 89825faf2f2SRob Clark } else { 89925faf2f2SRob Clark name = comm = NULL; 90025faf2f2SRob Clark } 90125faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 90225faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 90325faf2f2SRob Clark vma->aspace, vma->iova, 90425faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 9057ad0e8cfSJordan Crouse vma->inuse); 90625faf2f2SRob Clark kfree(comm); 90725faf2f2SRob Clark } 908575f0485SJordan Crouse 909575f0485SJordan Crouse seq_puts(m, "\n"); 910575f0485SJordan Crouse } 911b6295f9aSRob Clark 912b6295f9aSRob Clark rcu_read_lock(); 913b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 914b6295f9aSRob Clark if (fobj) { 915b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 916b6295f9aSRob Clark 917b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 918b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 919b6295f9aSRob Clark describe_fence(fence, "Shared", m); 920b6295f9aSRob Clark } 921b6295f9aSRob Clark } 922b6295f9aSRob Clark 923b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 924b6295f9aSRob Clark if (fence) 925b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 926b6295f9aSRob Clark rcu_read_unlock(); 9270e08270aSSushmita Susheelendra 928a6ae74c9SRob Clark msm_gem_unlock(obj); 929c8afe684SRob Clark } 930c8afe684SRob Clark 931c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 932c8afe684SRob Clark { 933c8afe684SRob Clark struct msm_gem_object *msm_obj; 934c8afe684SRob Clark int count = 0; 935c8afe684SRob Clark size_t size = 0; 936c8afe684SRob Clark 9370815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 938c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 939c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 940575f0485SJordan Crouse seq_puts(m, " "); 941c8afe684SRob Clark msm_gem_describe(obj, m); 942c8afe684SRob Clark count++; 943c8afe684SRob Clark size += obj->size; 944c8afe684SRob Clark } 945c8afe684SRob Clark 946c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 947c8afe684SRob Clark } 948c8afe684SRob Clark #endif 949c8afe684SRob Clark 950eecd7fd8SEmil Velikov /* don't call directly! Use drm_gem_object_put_locked() and friends */ 951c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 952c8afe684SRob Clark { 953c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 95448e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 95548e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 95648e7f183SKristian H. Kristensen 95748e7f183SKristian H. Kristensen if (llist_add(&msm_obj->freed, &priv->free_list)) 95848e7f183SKristian H. Kristensen queue_work(priv->wq, &priv->free_work); 95948e7f183SKristian H. Kristensen } 96048e7f183SKristian H. Kristensen 96148e7f183SKristian H. Kristensen static void free_object(struct msm_gem_object *msm_obj) 96248e7f183SKristian H. Kristensen { 96348e7f183SKristian H. Kristensen struct drm_gem_object *obj = &msm_obj->base; 96448e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 965c8afe684SRob Clark 966c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 967c8afe684SRob Clark 9687198e6b0SRob Clark /* object should not be on active list: */ 9697198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 9707198e6b0SRob Clark 971c8afe684SRob Clark list_del(&msm_obj->mm_list); 972c8afe684SRob Clark 973a6ae74c9SRob Clark msm_gem_lock(obj); 9740e08270aSSushmita Susheelendra 9754fe5f65eSRob Clark put_iova(obj); 976c8afe684SRob Clark 97705b84911SRob Clark if (obj->import_attach) { 9788b6b7d84SDaniel Vetter WARN_ON(msm_obj->vaddr); 97905b84911SRob Clark 98005b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 98105b84911SRob Clark * ours, just free the array we allocated: 98205b84911SRob Clark */ 98305b84911SRob Clark if (msm_obj->pages) 9842098105eSMichal Hocko kvfree(msm_obj->pages); 98505b84911SRob Clark 986f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 98705b84911SRob Clark } else { 9880e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 989c8afe684SRob Clark put_pages(obj); 99005b84911SRob Clark } 991c8afe684SRob Clark 992c8afe684SRob Clark drm_gem_object_release(obj); 993c8afe684SRob Clark 994a6ae74c9SRob Clark msm_gem_unlock(obj); 995c8afe684SRob Clark kfree(msm_obj); 996c8afe684SRob Clark } 997c8afe684SRob Clark 99848e7f183SKristian H. Kristensen void msm_gem_free_work(struct work_struct *work) 99948e7f183SKristian H. Kristensen { 100048e7f183SKristian H. Kristensen struct msm_drm_private *priv = 100148e7f183SKristian H. Kristensen container_of(work, struct msm_drm_private, free_work); 100248e7f183SKristian H. Kristensen struct drm_device *dev = priv->dev; 100348e7f183SKristian H. Kristensen struct llist_node *freed; 100448e7f183SKristian H. Kristensen struct msm_gem_object *msm_obj, *next; 100548e7f183SKristian H. Kristensen 100648e7f183SKristian H. Kristensen while ((freed = llist_del_all(&priv->free_list))) { 100748e7f183SKristian H. Kristensen 100848e7f183SKristian H. Kristensen mutex_lock(&dev->struct_mutex); 100948e7f183SKristian H. Kristensen 101048e7f183SKristian H. Kristensen llist_for_each_entry_safe(msm_obj, next, 101148e7f183SKristian H. Kristensen freed, freed) 101248e7f183SKristian H. Kristensen free_object(msm_obj); 101348e7f183SKristian H. Kristensen 101448e7f183SKristian H. Kristensen mutex_unlock(&dev->struct_mutex); 101548e7f183SKristian H. Kristensen 101648e7f183SKristian H. Kristensen if (need_resched()) 101748e7f183SKristian H. Kristensen break; 101848e7f183SKristian H. Kristensen } 101948e7f183SKristian H. Kristensen } 102048e7f183SKristian H. Kristensen 1021c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1022c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10230815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10240815d774SJordan Crouse char *name) 1025c8afe684SRob Clark { 1026c8afe684SRob Clark struct drm_gem_object *obj; 1027c8afe684SRob Clark int ret; 1028c8afe684SRob Clark 1029c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1030c8afe684SRob Clark 1031c8afe684SRob Clark if (IS_ERR(obj)) 1032c8afe684SRob Clark return PTR_ERR(obj); 1033c8afe684SRob Clark 10340815d774SJordan Crouse if (name) 10350815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10360815d774SJordan Crouse 1037c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1038c8afe684SRob Clark 1039c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1040f7d33950SEmil Velikov drm_gem_object_put(obj); 1041c8afe684SRob Clark 1042c8afe684SRob Clark return ret; 1043c8afe684SRob Clark } 1044c8afe684SRob Clark 104505b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 104605b84911SRob Clark uint32_t size, uint32_t flags, 10473cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1048c8afe684SRob Clark { 1049c8afe684SRob Clark struct msm_gem_object *msm_obj; 1050c8afe684SRob Clark 1051c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1052c8afe684SRob Clark case MSM_BO_UNCACHED: 1053c8afe684SRob Clark case MSM_BO_CACHED: 1054c8afe684SRob Clark case MSM_BO_WC: 1055c8afe684SRob Clark break; 1056c8afe684SRob Clark default: 10576a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 1058c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 105905b84911SRob Clark return -EINVAL; 1060c8afe684SRob Clark } 1061c8afe684SRob Clark 1062667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 106305b84911SRob Clark if (!msm_obj) 106405b84911SRob Clark return -ENOMEM; 1065c8afe684SRob Clark 10660e08270aSSushmita Susheelendra mutex_init(&msm_obj->lock); 10670e08270aSSushmita Susheelendra 1068c8afe684SRob Clark msm_obj->flags = flags; 10694cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1070c8afe684SRob Clark 10717198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 10724b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 10734b85f7f5SRob Clark 107405b84911SRob Clark *obj = &msm_obj->base; 107505b84911SRob Clark 107605b84911SRob Clark return 0; 107705b84911SRob Clark } 107805b84911SRob Clark 10790e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 10800e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 108105b84911SRob Clark { 1082f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 10833cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1084871d812aSRob Clark struct drm_gem_object *obj = NULL; 1085f4839bd5SRob Clark bool use_vram = false; 108605b84911SRob Clark int ret; 108705b84911SRob Clark 108805b84911SRob Clark size = PAGE_ALIGN(size); 108905b84911SRob Clark 1090c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1091f4839bd5SRob Clark use_vram = true; 109286f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1093f4839bd5SRob Clark use_vram = true; 1094f4839bd5SRob Clark 1095f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 1096f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1097f4839bd5SRob Clark 10981a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 10991a5dff5dSJordan Crouse * infrastructure grumpy 11001a5dff5dSJordan Crouse */ 11011a5dff5dSJordan Crouse if (size == 0) 11021a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11031a5dff5dSJordan Crouse 11043cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 110505b84911SRob Clark if (ret) 110605b84911SRob Clark goto fail; 110705b84911SRob Clark 11083cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11093cbdc8d8SAkhil P Oommen 1110f4839bd5SRob Clark if (use_vram) { 11114b85f7f5SRob Clark struct msm_gem_vma *vma; 1112f4839bd5SRob Clark struct page **pages; 1113b3949a9aSHans Verkuil 1114a6ae74c9SRob Clark msm_gem_lock(obj); 1115f4839bd5SRob Clark 11164b85f7f5SRob Clark vma = add_vma(obj, NULL); 1117a6ae74c9SRob Clark msm_gem_unlock(obj); 11184b85f7f5SRob Clark if (IS_ERR(vma)) { 11194b85f7f5SRob Clark ret = PTR_ERR(vma); 11204b85f7f5SRob Clark goto fail; 11214b85f7f5SRob Clark } 11224b85f7f5SRob Clark 11234b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11244b85f7f5SRob Clark 1125f4839bd5SRob Clark drm_gem_private_object_init(dev, obj, size); 1126f4839bd5SRob Clark 1127f4839bd5SRob Clark pages = get_pages(obj); 1128f4839bd5SRob Clark if (IS_ERR(pages)) { 1129f4839bd5SRob Clark ret = PTR_ERR(pages); 1130f4839bd5SRob Clark goto fail; 1131f4839bd5SRob Clark } 11324b85f7f5SRob Clark 11334b85f7f5SRob Clark vma->iova = physaddr(obj); 1134f4839bd5SRob Clark } else { 113505b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 113605b84911SRob Clark if (ret) 113705b84911SRob Clark goto fail; 11380abdba47SLucas Stach /* 11390abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11400abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11410abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11420abdba47SLucas Stach * expected if you're going to pin these pages. 11430abdba47SLucas Stach */ 11440abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1145871d812aSRob Clark } 114605b84911SRob Clark 11473cbdc8d8SAkhil P Oommen if (struct_mutex_locked) { 11483cbdc8d8SAkhil P Oommen WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 11493cbdc8d8SAkhil P Oommen list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 11503cbdc8d8SAkhil P Oommen } else { 11513cbdc8d8SAkhil P Oommen mutex_lock(&dev->struct_mutex); 11523cbdc8d8SAkhil P Oommen list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 11533cbdc8d8SAkhil P Oommen mutex_unlock(&dev->struct_mutex); 11543cbdc8d8SAkhil P Oommen } 11553cbdc8d8SAkhil P Oommen 115605b84911SRob Clark return obj; 115705b84911SRob Clark 115805b84911SRob Clark fail: 1159f7d33950SEmil Velikov drm_gem_object_put(obj); 116005b84911SRob Clark return ERR_PTR(ret); 116105b84911SRob Clark } 116205b84911SRob Clark 11630e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 11640e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 11650e08270aSSushmita Susheelendra { 11660e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 11670e08270aSSushmita Susheelendra } 11680e08270aSSushmita Susheelendra 11690e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 11700e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 11710e08270aSSushmita Susheelendra { 11720e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 11730e08270aSSushmita Susheelendra } 11740e08270aSSushmita Susheelendra 117505b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 117679f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 117705b84911SRob Clark { 11783cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 117905b84911SRob Clark struct msm_gem_object *msm_obj; 118005b84911SRob Clark struct drm_gem_object *obj; 118179f0e202SRob Clark uint32_t size; 118205b84911SRob Clark int ret, npages; 118305b84911SRob Clark 1184871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1185c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 11866a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1187871d812aSRob Clark return ERR_PTR(-EINVAL); 1188871d812aSRob Clark } 1189871d812aSRob Clark 119079f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 119105b84911SRob Clark 11923cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 119305b84911SRob Clark if (ret) 119405b84911SRob Clark goto fail; 119505b84911SRob Clark 119605b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 119705b84911SRob Clark 119805b84911SRob Clark npages = size / PAGE_SIZE; 119905b84911SRob Clark 120005b84911SRob Clark msm_obj = to_msm_bo(obj); 1201a6ae74c9SRob Clark msm_gem_lock(obj); 120205b84911SRob Clark msm_obj->sgt = sgt; 12032098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 120405b84911SRob Clark if (!msm_obj->pages) { 1205a6ae74c9SRob Clark msm_gem_unlock(obj); 120605b84911SRob Clark ret = -ENOMEM; 120705b84911SRob Clark goto fail; 120805b84911SRob Clark } 120905b84911SRob Clark 121005b84911SRob Clark ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); 12110e08270aSSushmita Susheelendra if (ret) { 1212a6ae74c9SRob Clark msm_gem_unlock(obj); 121305b84911SRob Clark goto fail; 12140e08270aSSushmita Susheelendra } 121505b84911SRob Clark 1216a6ae74c9SRob Clark msm_gem_unlock(obj); 12173cbdc8d8SAkhil P Oommen 12183cbdc8d8SAkhil P Oommen mutex_lock(&dev->struct_mutex); 12193cbdc8d8SAkhil P Oommen list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 12203cbdc8d8SAkhil P Oommen mutex_unlock(&dev->struct_mutex); 12213cbdc8d8SAkhil P Oommen 1222c8afe684SRob Clark return obj; 1223c8afe684SRob Clark 1224c8afe684SRob Clark fail: 1225f7d33950SEmil Velikov drm_gem_object_put(obj); 1226c8afe684SRob Clark return ERR_PTR(ret); 1227c8afe684SRob Clark } 12288223286dSJordan Crouse 12298223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12308223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12318223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 12328223286dSJordan Crouse { 12338223286dSJordan Crouse void *vaddr; 12348223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 12358223286dSJordan Crouse int ret; 12368223286dSJordan Crouse 12378223286dSJordan Crouse if (IS_ERR(obj)) 12388223286dSJordan Crouse return ERR_CAST(obj); 12398223286dSJordan Crouse 12408223286dSJordan Crouse if (iova) { 12419fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 124293f7abf1SJordan Crouse if (ret) 124393f7abf1SJordan Crouse goto err; 12448223286dSJordan Crouse } 12458223286dSJordan Crouse 12468223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1247c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12487ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 124993f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 125093f7abf1SJordan Crouse goto err; 12518223286dSJordan Crouse } 12528223286dSJordan Crouse 12538223286dSJordan Crouse if (bo) 12548223286dSJordan Crouse *bo = obj; 12558223286dSJordan Crouse 12568223286dSJordan Crouse return vaddr; 125793f7abf1SJordan Crouse err: 125893f7abf1SJordan Crouse if (locked) 1259eecd7fd8SEmil Velikov drm_gem_object_put_locked(obj); 126093f7abf1SJordan Crouse else 1261f7d33950SEmil Velikov drm_gem_object_put(obj); 126293f7abf1SJordan Crouse 126393f7abf1SJordan Crouse return ERR_PTR(ret); 126493f7abf1SJordan Crouse 12658223286dSJordan Crouse } 12668223286dSJordan Crouse 12678223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12688223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12698223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 12708223286dSJordan Crouse { 12718223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 12728223286dSJordan Crouse } 12738223286dSJordan Crouse 12748223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 12758223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12768223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 12778223286dSJordan Crouse { 12788223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 12798223286dSJordan Crouse } 12801e29dff0SJordan Crouse 12811e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 12821e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 12831e29dff0SJordan Crouse { 12841e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 12851e29dff0SJordan Crouse return; 12861e29dff0SJordan Crouse 12871e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 12887ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 12891e29dff0SJordan Crouse 12901e29dff0SJordan Crouse if (locked) 1291eecd7fd8SEmil Velikov drm_gem_object_put_locked(bo); 12921e29dff0SJordan Crouse else 1293f7d33950SEmil Velikov drm_gem_object_put(bo); 12941e29dff0SJordan Crouse } 12950815d774SJordan Crouse 12960815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 12970815d774SJordan Crouse { 12980815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 12990815d774SJordan Crouse va_list ap; 13000815d774SJordan Crouse 13010815d774SJordan Crouse if (!fmt) 13020815d774SJordan Crouse return; 13030815d774SJordan Crouse 13040815d774SJordan Crouse va_start(ap, fmt); 13050815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13060815d774SJordan Crouse va_end(ap); 13070815d774SJordan Crouse } 1308