1caab277bSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2c8afe684SRob Clark /* 3c8afe684SRob Clark * Copyright (C) 2013 Red Hat 4c8afe684SRob Clark * Author: Rob Clark <robdclark@gmail.com> 5c8afe684SRob Clark */ 6c8afe684SRob Clark 70a0f0d8bSChristoph Hellwig #include <linux/dma-map-ops.h> 8c8afe684SRob Clark #include <linux/spinlock.h> 9c8afe684SRob Clark #include <linux/shmem_fs.h> 1005b84911SRob Clark #include <linux/dma-buf.h> 1101c8f1c4SDan Williams #include <linux/pfn_t.h> 12c8afe684SRob Clark 13feea39a8SSam Ravnborg #include <drm/drm_prime.h> 14feea39a8SSam Ravnborg 15c8afe684SRob Clark #include "msm_drv.h" 16fde5de6cSRob Clark #include "msm_fence.h" 17c8afe684SRob Clark #include "msm_gem.h" 187198e6b0SRob Clark #include "msm_gpu.h" 19871d812aSRob Clark #include "msm_mmu.h" 20c8afe684SRob Clark 213edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj); 220e08270aSSushmita Susheelendra 23871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 24871d812aSRob Clark { 25871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 26871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 27871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 28871d812aSRob Clark priv->vram.paddr; 29871d812aSRob Clark } 30871d812aSRob Clark 31072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 32072f1f91SRob Clark { 33072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 34072f1f91SRob Clark return !msm_obj->vram_node; 35072f1f91SRob Clark } 36072f1f91SRob Clark 373de433c5SRob Clark /* 383de433c5SRob Clark * Cache sync.. this is a bit over-complicated, to fit dma-mapping 393de433c5SRob Clark * API. Really GPU cache is out of scope here (handled on cmdstream) 403de433c5SRob Clark * and all we need to do is invalidate newly allocated pages before 413de433c5SRob Clark * mapping to CPU as uncached/writecombine. 423de433c5SRob Clark * 433de433c5SRob Clark * On top of this, we have the added headache, that depending on 443de433c5SRob Clark * display generation, the display's iommu may be wired up to either 453de433c5SRob Clark * the toplevel drm device (mdss), or to the mdp sub-node, meaning 463de433c5SRob Clark * that here we either have dma-direct or iommu ops. 473de433c5SRob Clark * 483de433c5SRob Clark * Let this be a cautionary tail of abstraction gone wrong. 493de433c5SRob Clark */ 503de433c5SRob Clark 513de433c5SRob Clark static void sync_for_device(struct msm_gem_object *msm_obj) 523de433c5SRob Clark { 533de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 543de433c5SRob Clark 557690a33fSMarek Szyprowski dma_map_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 563de433c5SRob Clark } 573de433c5SRob Clark 583de433c5SRob Clark static void sync_for_cpu(struct msm_gem_object *msm_obj) 593de433c5SRob Clark { 603de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 613de433c5SRob Clark 627690a33fSMarek Szyprowski dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 633de433c5SRob Clark } 643de433c5SRob Clark 65871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 660e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 67871d812aSRob Clark { 68871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 70871d812aSRob Clark dma_addr_t paddr; 71871d812aSRob Clark struct page **p; 72871d812aSRob Clark int ret, i; 73871d812aSRob Clark 742098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 75871d812aSRob Clark if (!p) 76871d812aSRob Clark return ERR_PTR(-ENOMEM); 77871d812aSRob Clark 780e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 794e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 800e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 81871d812aSRob Clark if (ret) { 822098105eSMichal Hocko kvfree(p); 83871d812aSRob Clark return ERR_PTR(ret); 84871d812aSRob Clark } 85871d812aSRob Clark 86871d812aSRob Clark paddr = physaddr(obj); 87871d812aSRob Clark for (i = 0; i < npages; i++) { 88871d812aSRob Clark p[i] = phys_to_page(paddr); 89871d812aSRob Clark paddr += PAGE_SIZE; 90871d812aSRob Clark } 91871d812aSRob Clark 92871d812aSRob Clark return p; 93871d812aSRob Clark } 94c8afe684SRob Clark 95c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 96c8afe684SRob Clark { 97c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 98c8afe684SRob Clark 9990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 10007fcad0dSIskren Chernev 101c8afe684SRob Clark if (!msm_obj->pages) { 102c8afe684SRob Clark struct drm_device *dev = obj->dev; 103871d812aSRob Clark struct page **p; 104c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 105c8afe684SRob Clark 106072f1f91SRob Clark if (use_pages(obj)) 1070cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 108871d812aSRob Clark else 109871d812aSRob Clark p = get_pages_vram(obj, npages); 110871d812aSRob Clark 111c8afe684SRob Clark if (IS_ERR(p)) { 1126a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 113c8afe684SRob Clark PTR_ERR(p)); 114c8afe684SRob Clark return p; 115c8afe684SRob Clark } 116c8afe684SRob Clark 11762e3a3e3SPrakash Kamliya msm_obj->pages = p; 11862e3a3e3SPrakash Kamliya 119707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1201f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 12162e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 122c8afe684SRob Clark 1236a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 12462e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 12562e3a3e3SPrakash Kamliya return ptr; 12662e3a3e3SPrakash Kamliya } 127c8afe684SRob Clark 128c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 129c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 130c8afe684SRob Clark */ 131c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1323de433c5SRob Clark sync_for_device(msm_obj); 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); 165*b9a31d0dSRob Clark msm_obj->sgt = NULL; 1663976626eSBen Hutchings } 167c8afe684SRob Clark 168072f1f91SRob Clark if (use_pages(obj)) 169c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1700e08270aSSushmita Susheelendra else 1710e08270aSSushmita Susheelendra put_pages_vram(obj); 172871d812aSRob Clark 173c8afe684SRob Clark msm_obj->pages = NULL; 174c8afe684SRob Clark } 175c8afe684SRob Clark } 176c8afe684SRob Clark 17705b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 17805b84911SRob Clark { 1790e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 18005b84911SRob Clark struct page **p; 1810e08270aSSushmita Susheelendra 182a6ae74c9SRob Clark msm_gem_lock(obj); 1830e08270aSSushmita Susheelendra 18490643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 185a6ae74c9SRob Clark msm_gem_unlock(obj); 1860e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1870e08270aSSushmita Susheelendra } 1880e08270aSSushmita Susheelendra 18905b84911SRob Clark p = get_pages(obj); 190a6ae74c9SRob Clark msm_gem_unlock(obj); 19105b84911SRob Clark return p; 19205b84911SRob Clark } 19305b84911SRob Clark 19405b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 19505b84911SRob Clark { 19605b84911SRob Clark /* when we start tracking the pin count, then do something here */ 19705b84911SRob Clark } 19805b84911SRob Clark 199c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 200c8afe684SRob Clark struct vm_area_struct *vma) 201c8afe684SRob Clark { 202c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 203c8afe684SRob Clark 204c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 205c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 206c8afe684SRob Clark 207c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 208c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 209c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 210c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 211c8afe684SRob Clark } else { 212c8afe684SRob Clark /* 213c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 214c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 215c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 216c8afe684SRob Clark */ 217c8afe684SRob Clark vma->vm_pgoff = 0; 218295992fbSChristian König vma_set_file(vma, 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 2393c9edd9cSThomas Zimmermann static 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 26090643a24SRob Clark if (GEM_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 29390643a24SRob Clark GEM_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 32290643a24SRob Clark GEM_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 34190643a24SRob Clark GEM_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 3629b73bde3SIskren Chernev put_iova_spaces(struct drm_gem_object *obj) 3634fe5f65eSRob Clark { 3644fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3659b73bde3SIskren Chernev struct msm_gem_vma *vma; 3664fe5f65eSRob Clark 36790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3684fe5f65eSRob Clark 3699b73bde3SIskren Chernev list_for_each_entry(vma, &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 } 3749b73bde3SIskren Chernev } 3759b73bde3SIskren Chernev } 3769b73bde3SIskren Chernev 3779b73bde3SIskren Chernev /* Called with msm_obj locked */ 3789b73bde3SIskren Chernev static void 3799b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3804fe5f65eSRob Clark { 3814fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3824fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3834fe5f65eSRob Clark 38490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3854fe5f65eSRob Clark 3864fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3874b85f7f5SRob Clark del_vma(vma); 3884fe5f65eSRob Clark } 3894fe5f65eSRob Clark } 3904fe5f65eSRob Clark 3918117e5e5SRob Clark static int get_iova_locked(struct drm_gem_object *obj, 392d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 393d3b8877eSJonathan Marek u64 range_start, u64 range_end) 394c8afe684SRob Clark { 3954b85f7f5SRob Clark struct msm_gem_vma *vma; 396c8afe684SRob Clark int ret = 0; 397c8afe684SRob Clark 39890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 399cb1e3818SRob Clark 4004b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 401871d812aSRob Clark 4024b85f7f5SRob Clark if (!vma) { 4034b85f7f5SRob Clark vma = add_vma(obj, aspace); 404c0ee9794SJordan Crouse if (IS_ERR(vma)) 405c0ee9794SJordan Crouse return PTR_ERR(vma); 4064b85f7f5SRob Clark 407d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 408d3b8877eSJonathan Marek range_start, range_end); 409c0ee9794SJordan Crouse if (ret) { 410c0ee9794SJordan Crouse del_vma(vma); 411c0ee9794SJordan Crouse return ret; 412c8afe684SRob Clark } 4134b85f7f5SRob Clark } 4144b85f7f5SRob Clark 4154b85f7f5SRob Clark *iova = vma->iova; 4164b85f7f5SRob Clark return 0; 417c0ee9794SJordan Crouse } 4184b85f7f5SRob Clark 419c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 420c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 421c0ee9794SJordan Crouse { 422c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 423c0ee9794SJordan Crouse struct msm_gem_vma *vma; 424c0ee9794SJordan Crouse struct page **pages; 425bbc2cd07SRob Clark int prot = IOMMU_READ; 426bbc2cd07SRob Clark 427bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 428bbc2cd07SRob Clark prot |= IOMMU_WRITE; 429c0ee9794SJordan Crouse 4300b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4310b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4320b462d7aSJonathan Marek 43390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 434c0ee9794SJordan Crouse 43590643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 436c0ee9794SJordan Crouse return -EBUSY; 437c0ee9794SJordan Crouse 438c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 43990643a24SRob Clark if (GEM_WARN_ON(!vma)) 440c0ee9794SJordan Crouse return -EINVAL; 441c0ee9794SJordan Crouse 442c0ee9794SJordan Crouse pages = get_pages(obj); 443c0ee9794SJordan Crouse if (IS_ERR(pages)) 444c0ee9794SJordan Crouse return PTR_ERR(pages); 445c0ee9794SJordan Crouse 446bbc2cd07SRob Clark return msm_gem_map_vma(aspace, vma, prot, 447bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 448c0ee9794SJordan Crouse } 449c0ee9794SJordan Crouse 450e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 451d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 452d3b8877eSJonathan Marek u64 range_start, u64 range_end) 453c0ee9794SJordan Crouse { 454c0ee9794SJordan Crouse u64 local; 455c0ee9794SJordan Crouse int ret; 456c0ee9794SJordan Crouse 45790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 458c0ee9794SJordan Crouse 4598117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 460d3b8877eSJonathan Marek range_start, range_end); 461c0ee9794SJordan Crouse 462c0ee9794SJordan Crouse if (!ret) 463c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 464c0ee9794SJordan Crouse 465c0ee9794SJordan Crouse if (!ret) 466c0ee9794SJordan Crouse *iova = local; 467c0ee9794SJordan Crouse 468c8afe684SRob Clark return ret; 469c8afe684SRob Clark } 470c8afe684SRob Clark 471e4b87d22SRob Clark /* 472e4b87d22SRob Clark * get iova and pin it. Should have a matching put 473e4b87d22SRob Clark * limits iova to specified range (in pages) 474e4b87d22SRob Clark */ 475e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 476e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 477e4b87d22SRob Clark u64 range_start, u64 range_end) 478e4b87d22SRob Clark { 479e4b87d22SRob Clark int ret; 480e4b87d22SRob Clark 481e4b87d22SRob Clark msm_gem_lock(obj); 482e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 483e4b87d22SRob Clark msm_gem_unlock(obj); 484e4b87d22SRob Clark 485e4b87d22SRob Clark return ret; 486e4b87d22SRob Clark } 487e4b87d22SRob Clark 488e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 489e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 490e4b87d22SRob Clark { 491e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 492e4b87d22SRob Clark } 493e4b87d22SRob Clark 494d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 495d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 496d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 497d3b8877eSJonathan Marek { 498d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 499d3b8877eSJonathan Marek } 500d3b8877eSJonathan Marek 5017ad0e8cfSJordan Crouse /* 5027ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5037ad0e8cfSJordan Crouse * valid for the life of the object 5047ad0e8cfSJordan Crouse */ 5059fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5069fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5079fe041f6SJordan Crouse { 5089fe041f6SJordan Crouse int ret; 5099fe041f6SJordan Crouse 510a6ae74c9SRob Clark msm_gem_lock(obj); 5118117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 512a6ae74c9SRob Clark msm_gem_unlock(obj); 5139fe041f6SJordan Crouse 5149fe041f6SJordan Crouse return ret; 5159fe041f6SJordan Crouse } 5169fe041f6SJordan Crouse 5172638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5189fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5192638d90aSRob Clark */ 5208bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5218bdcd949SRob Clark struct msm_gem_address_space *aspace) 5222638d90aSRob Clark { 5234b85f7f5SRob Clark struct msm_gem_vma *vma; 5244b85f7f5SRob Clark 525a6ae74c9SRob Clark msm_gem_lock(obj); 5264b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 527a6ae74c9SRob Clark msm_gem_unlock(obj); 52890643a24SRob Clark GEM_WARN_ON(!vma); 5294b85f7f5SRob Clark 5304b85f7f5SRob Clark return vma ? vma->iova : 0; 5312638d90aSRob Clark } 5322638d90aSRob Clark 5337ad0e8cfSJordan Crouse /* 534e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 535e4b87d22SRob Clark */ 536e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 537e4b87d22SRob Clark struct msm_gem_address_space *aspace) 538e4b87d22SRob Clark { 539e4b87d22SRob Clark struct msm_gem_vma *vma; 540e4b87d22SRob Clark 54190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 542e4b87d22SRob Clark 543e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 544e4b87d22SRob Clark 54590643a24SRob Clark if (!GEM_WARN_ON(!vma)) 546e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 547e4b87d22SRob Clark } 548e4b87d22SRob Clark 549e4b87d22SRob Clark /* 5507ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5517ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5527ad0e8cfSJordan Crouse * to get rid of it 5537ad0e8cfSJordan Crouse */ 5547ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5558bdcd949SRob Clark struct msm_gem_address_space *aspace) 556c8afe684SRob Clark { 557a6ae74c9SRob Clark msm_gem_lock(obj); 558e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 559a6ae74c9SRob Clark msm_gem_unlock(obj); 560c8afe684SRob Clark } 561c8afe684SRob Clark 562c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 563c8afe684SRob Clark struct drm_mode_create_dumb *args) 564c8afe684SRob Clark { 565c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 566c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 567c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5680815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 569c8afe684SRob Clark } 570c8afe684SRob Clark 571c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 572c8afe684SRob Clark uint32_t handle, uint64_t *offset) 573c8afe684SRob Clark { 574c8afe684SRob Clark struct drm_gem_object *obj; 575c8afe684SRob Clark int ret = 0; 576c8afe684SRob Clark 577c8afe684SRob Clark /* GEM does all our handle to object mapping */ 578a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 579c8afe684SRob Clark if (obj == NULL) { 580c8afe684SRob Clark ret = -ENOENT; 581c8afe684SRob Clark goto fail; 582c8afe684SRob Clark } 583c8afe684SRob Clark 584c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 585c8afe684SRob Clark 586f7d33950SEmil Velikov drm_gem_object_put(obj); 587c8afe684SRob Clark 588c8afe684SRob Clark fail: 589c8afe684SRob Clark return ret; 590c8afe684SRob Clark } 591c8afe684SRob Clark 592fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 593c8afe684SRob Clark { 5940e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5950e08270aSSushmita Susheelendra int ret = 0; 5960e08270aSSushmita Susheelendra 59790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 598e4b87d22SRob Clark 5998b6b7d84SDaniel Vetter if (obj->import_attach) 6008b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6018b6b7d84SDaniel Vetter 60290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6036a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 604fad33f4bSRob Clark msm_obj->madv, madv); 6050e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 606c8afe684SRob Clark } 607c8afe684SRob Clark 6080e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 609a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6100e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6110e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 612a6ae74c9SRob Clark * hold msm_obj lock) 6130e08270aSSushmita Susheelendra */ 6140e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6150e08270aSSushmita Susheelendra 6160e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6170e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6180e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6190e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6200e08270aSSushmita Susheelendra goto fail; 6210e08270aSSushmita Susheelendra } 6220e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 6230e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 6240e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6250e08270aSSushmita Susheelendra ret = -ENOMEM; 6260e08270aSSushmita Susheelendra goto fail; 6270e08270aSSushmita Susheelendra } 6280e08270aSSushmita Susheelendra } 6290e08270aSSushmita Susheelendra 6300e08270aSSushmita Susheelendra return msm_obj->vaddr; 6310e08270aSSushmita Susheelendra 6320e08270aSSushmita Susheelendra fail: 633e1e9db2cSRob Clark msm_obj->vmap_count--; 6340e08270aSSushmita Susheelendra return ERR_PTR(ret); 63518f23049SRob Clark } 63618f23049SRob Clark 637e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 638e4b87d22SRob Clark { 639e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 640e4b87d22SRob Clark } 641e4b87d22SRob Clark 642fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 643fad33f4bSRob Clark { 644e4b87d22SRob Clark void *ret; 645e4b87d22SRob Clark 646e4b87d22SRob Clark msm_gem_lock(obj); 647e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 648e4b87d22SRob Clark msm_gem_unlock(obj); 649e4b87d22SRob Clark 650e4b87d22SRob Clark return ret; 651fad33f4bSRob Clark } 652fad33f4bSRob Clark 653fad33f4bSRob Clark /* 654fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 655fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 656fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 657fad33f4bSRob Clark * active list. 658fad33f4bSRob Clark */ 659fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 660fad33f4bSRob Clark { 661fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 662fad33f4bSRob Clark } 663fad33f4bSRob Clark 664e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 66518f23049SRob Clark { 6660e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6670e08270aSSushmita Susheelendra 66890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 66990643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 670e4b87d22SRob Clark 6710e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6724cd33c48SRob Clark } 6730e08270aSSushmita Susheelendra 6740e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6754cd33c48SRob Clark { 676a6ae74c9SRob Clark msm_gem_lock(obj); 677e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 678a6ae74c9SRob Clark msm_gem_unlock(obj); 6794cd33c48SRob Clark } 6804cd33c48SRob Clark 6814cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6824cd33c48SRob Clark * false or -errno. 6834cd33c48SRob Clark */ 6844cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6854cd33c48SRob Clark { 6864cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 68768209390SRob Clark 688a6ae74c9SRob Clark msm_gem_lock(obj); 689c8afe684SRob Clark 690c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 691c8afe684SRob Clark msm_obj->madv = madv; 692c8afe684SRob Clark 6930e08270aSSushmita Susheelendra madv = msm_obj->madv; 6940e08270aSSushmita Susheelendra 6953edfa30fSRob Clark /* If the obj is inactive, we might need to move it 6963edfa30fSRob Clark * between inactive lists 6973edfa30fSRob Clark */ 6983edfa30fSRob Clark if (msm_obj->active_count == 0) 6993edfa30fSRob Clark update_inactive(msm_obj); 7003edfa30fSRob Clark 701a6ae74c9SRob Clark msm_gem_unlock(obj); 7020e08270aSSushmita Susheelendra 7030e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 704c8afe684SRob Clark } 705c8afe684SRob Clark 706599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 70768209390SRob Clark { 70868209390SRob Clark struct drm_device *dev = obj->dev; 70968209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 71068209390SRob Clark 71190643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 71290643a24SRob Clark GEM_WARN_ON(obj->import_attach); 71368209390SRob Clark 7149b73bde3SIskren Chernev put_iova_spaces(obj); 7150e08270aSSushmita Susheelendra 716599089c6SRob Clark msm_gem_vunmap(obj); 71768209390SRob Clark 71868209390SRob Clark put_pages(obj); 71968209390SRob Clark 7209b73bde3SIskren Chernev put_iova_vmas(obj); 7219b73bde3SIskren Chernev 72268209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 72325ed38b3SRob Clark update_inactive(msm_obj); 72468209390SRob Clark 72568209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 72668209390SRob Clark drm_gem_free_mmap_offset(obj); 72768209390SRob Clark 72868209390SRob Clark /* Our goal here is to return as much of the memory as 72968209390SRob Clark * is possible back to the system as we are called from OOM. 73068209390SRob Clark * To do this we must instruct the shmfs to drop all of its 73168209390SRob Clark * backing pages, *now*. 73268209390SRob Clark */ 73368209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 73468209390SRob Clark 73568209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 73668209390SRob Clark 0, (loff_t)-1); 73768209390SRob Clark } 73868209390SRob Clark 739599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 740e1e9db2cSRob Clark { 741e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 742e1e9db2cSRob Clark 74390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7440e08270aSSushmita Susheelendra 74590643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 746e1e9db2cSRob Clark return; 747e1e9db2cSRob Clark 748e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 749e1e9db2cSRob Clark msm_obj->vaddr = NULL; 750e1e9db2cSRob Clark } 751e1e9db2cSRob Clark 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); 790d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 791d984457bSRob Clark 792d984457bSRob Clark might_sleep(); 79390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 79490643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 79590643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 7969d8baa2bSAkhil P Oommen 797ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 798d984457bSRob Clark mutex_lock(&priv->mm_lock); 799cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 8007198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 801d984457bSRob Clark mutex_unlock(&priv->mm_lock); 8027198e6b0SRob Clark } 8039d8baa2bSAkhil P Oommen } 8047198e6b0SRob Clark 8059d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8067198e6b0SRob Clark { 8077198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8087198e6b0SRob Clark 809d984457bSRob Clark might_sleep(); 81090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8117198e6b0SRob Clark 812ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8133edfa30fSRob Clark update_inactive(msm_obj); 8147198e6b0SRob Clark } 8159d8baa2bSAkhil P Oommen } 8167198e6b0SRob Clark 8173edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8183edfa30fSRob Clark { 8193edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8203edfa30fSRob Clark 8213edfa30fSRob Clark mutex_lock(&priv->mm_lock); 82290643a24SRob Clark GEM_WARN_ON(msm_obj->active_count != 0); 8233edfa30fSRob Clark 824cc8a4d5aSRob Clark if (msm_obj->dontneed) 8250054eeb7SRob Clark mark_unpurgeable(msm_obj); 826cc8a4d5aSRob Clark 827cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 828cc8a4d5aSRob Clark if (msm_obj->madv == MSM_MADV_WILLNEED) { 8293edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 830cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8313edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8320054eeb7SRob Clark mark_purgeable(msm_obj); 833cc8a4d5aSRob Clark } else { 83490643a24SRob Clark GEM_WARN_ON(msm_obj->madv != __MSM_MADV_PURGED); 835cc8a4d5aSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_purged); 836cc8a4d5aSRob Clark } 8373edfa30fSRob Clark 8383edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8393edfa30fSRob Clark } 8403edfa30fSRob Clark 841ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 842ba00c3f2SRob Clark { 843b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 844f755e227SChris Wilson unsigned long remain = 845f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 846f755e227SChris Wilson long ret; 847b6295f9aSRob Clark 84852791eeeSChristian König ret = dma_resv_wait_timeout_rcu(obj->resv, write, 849f755e227SChris Wilson true, remain); 850f755e227SChris Wilson if (ret == 0) 851f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 852f755e227SChris Wilson else if (ret < 0) 853f755e227SChris Wilson return ret; 854ba00c3f2SRob Clark 8557198e6b0SRob Clark /* TODO cache maintenance */ 8567198e6b0SRob Clark 857b6295f9aSRob Clark return 0; 8587198e6b0SRob Clark } 8597198e6b0SRob Clark 8607198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8617198e6b0SRob Clark { 8627198e6b0SRob Clark /* TODO cache maintenance */ 863c8afe684SRob Clark return 0; 864c8afe684SRob Clark } 865c8afe684SRob Clark 866c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 867f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 868b6295f9aSRob Clark struct seq_file *m) 869b6295f9aSRob Clark { 870f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 871a3115621SDave Airlie seq_printf(m, "\t%9s: %s %s seq %llu\n", type, 872b6295f9aSRob Clark fence->ops->get_driver_name(fence), 873b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 874b6295f9aSRob Clark fence->seqno); 875b6295f9aSRob Clark } 876b6295f9aSRob Clark 877528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 878528107c8SRob Clark struct msm_gem_stats *stats) 879c8afe684SRob Clark { 880c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 88152791eeeSChristian König struct dma_resv *robj = obj->resv; 88252791eeeSChristian König struct dma_resv_list *fobj; 883f54d1867SChris Wilson struct dma_fence *fence; 8844b85f7f5SRob Clark struct msm_gem_vma *vma; 885c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8864cd33c48SRob Clark const char *madv; 887c8afe684SRob Clark 888a6ae74c9SRob Clark msm_gem_lock(obj); 889b6295f9aSRob Clark 890528107c8SRob Clark stats->all.count++; 891528107c8SRob Clark stats->all.size += obj->size; 892528107c8SRob Clark 893528107c8SRob Clark if (is_active(msm_obj)) { 894528107c8SRob Clark stats->active.count++; 895528107c8SRob Clark stats->active.size += obj->size; 896528107c8SRob Clark } 897528107c8SRob Clark 8984cd33c48SRob Clark switch (msm_obj->madv) { 8994cd33c48SRob Clark case __MSM_MADV_PURGED: 900528107c8SRob Clark stats->purged.count++; 901528107c8SRob Clark stats->purged.size += obj->size; 9024cd33c48SRob Clark madv = " purged"; 9034cd33c48SRob Clark break; 9044cd33c48SRob Clark case MSM_MADV_DONTNEED: 9050054eeb7SRob Clark stats->purgeable.count++; 9060054eeb7SRob Clark stats->purgeable.size += obj->size; 9074cd33c48SRob Clark madv = " purgeable"; 9084cd33c48SRob Clark break; 9094cd33c48SRob Clark case MSM_MADV_WILLNEED: 9104cd33c48SRob Clark default: 9114cd33c48SRob Clark madv = ""; 9124cd33c48SRob Clark break; 9134cd33c48SRob Clark } 9144cd33c48SRob Clark 915575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9167198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9172c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 918667ce33eSRob Clark off, msm_obj->vaddr); 919667ce33eSRob Clark 9200815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 921667ce33eSRob Clark 922575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 923575f0485SJordan Crouse 924575f0485SJordan Crouse seq_puts(m, " vmas:"); 925575f0485SJordan Crouse 92625faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 92725faf2f2SRob Clark const char *name, *comm; 92825faf2f2SRob Clark if (vma->aspace) { 92925faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 93025faf2f2SRob Clark struct task_struct *task = 93125faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 93225faf2f2SRob Clark if (task) { 93325faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 93425faf2f2SRob Clark } else { 93525faf2f2SRob Clark comm = NULL; 93625faf2f2SRob Clark } 93725faf2f2SRob Clark name = aspace->name; 93825faf2f2SRob Clark } else { 93925faf2f2SRob Clark name = comm = NULL; 94025faf2f2SRob Clark } 94125faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 94225faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 94325faf2f2SRob Clark vma->aspace, vma->iova, 94425faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 9457ad0e8cfSJordan Crouse vma->inuse); 94625faf2f2SRob Clark kfree(comm); 94725faf2f2SRob Clark } 948575f0485SJordan Crouse 949575f0485SJordan Crouse seq_puts(m, "\n"); 950575f0485SJordan Crouse } 951b6295f9aSRob Clark 952b6295f9aSRob Clark rcu_read_lock(); 953b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 954b6295f9aSRob Clark if (fobj) { 955b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 956b6295f9aSRob Clark 957b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 958b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 959b6295f9aSRob Clark describe_fence(fence, "Shared", m); 960b6295f9aSRob Clark } 961b6295f9aSRob Clark } 962b6295f9aSRob Clark 963b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 964b6295f9aSRob Clark if (fence) 965b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 966b6295f9aSRob Clark rcu_read_unlock(); 9670e08270aSSushmita Susheelendra 968a6ae74c9SRob Clark msm_gem_unlock(obj); 969c8afe684SRob Clark } 970c8afe684SRob Clark 971c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 972c8afe684SRob Clark { 973528107c8SRob Clark struct msm_gem_stats stats = {}; 974c8afe684SRob Clark struct msm_gem_object *msm_obj; 975c8afe684SRob Clark 9760815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9776ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 978c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 979575f0485SJordan Crouse seq_puts(m, " "); 980528107c8SRob Clark msm_gem_describe(obj, m, &stats); 981c8afe684SRob Clark } 982c8afe684SRob Clark 983528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 984528107c8SRob Clark stats.all.count, stats.all.size); 985528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 986528107c8SRob Clark stats.active.count, stats.active.size); 987f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9880054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 989528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 990528107c8SRob Clark stats.purged.count, stats.purged.size); 991c8afe684SRob Clark } 992c8afe684SRob Clark #endif 993c8afe684SRob Clark 994eecd7fd8SEmil Velikov /* don't call directly! Use drm_gem_object_put_locked() and friends */ 995c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 996c8afe684SRob Clark { 997c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99848e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 99948e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 100048e7f183SKristian H. Kristensen 10016ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10026ed0897cSRob Clark list_del(&msm_obj->node); 10036ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10046ed0897cSRob Clark 1005d984457bSRob Clark mutex_lock(&priv->mm_lock); 1006cc8a4d5aSRob Clark if (msm_obj->dontneed) 10070054eeb7SRob Clark mark_unpurgeable(msm_obj); 1008c8afe684SRob Clark list_del(&msm_obj->mm_list); 1009d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1010c8afe684SRob Clark 1011a6ae74c9SRob Clark msm_gem_lock(obj); 1012c8afe684SRob Clark 1013c8afe684SRob Clark /* object should not be on active list: */ 101490643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 1015c8afe684SRob Clark 10169b73bde3SIskren Chernev put_iova_spaces(obj); 1017c8afe684SRob Clark 101805b84911SRob Clark if (obj->import_attach) { 101990643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 102005b84911SRob Clark 102105b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 102205b84911SRob Clark * ours, just free the array we allocated: 102305b84911SRob Clark */ 10242098105eSMichal Hocko kvfree(msm_obj->pages); 102505b84911SRob Clark 102657f04815SRob Clark put_iova_vmas(obj); 102757f04815SRob Clark 10286c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 10296c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 10306c0e3ea2SRob Clark */ 10316c0e3ea2SRob Clark msm_gem_unlock(obj); 10326c0e3ea2SRob Clark 1033f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 103405b84911SRob Clark } else { 1035599089c6SRob Clark msm_gem_vunmap(obj); 1036c8afe684SRob Clark put_pages(obj); 103757f04815SRob Clark put_iova_vmas(obj); 10386c0e3ea2SRob Clark msm_gem_unlock(obj); 103905b84911SRob Clark } 1040c8afe684SRob Clark 1041c8afe684SRob Clark drm_gem_object_release(obj); 1042c8afe684SRob Clark 1043c8afe684SRob Clark kfree(msm_obj); 1044c8afe684SRob Clark } 1045c8afe684SRob Clark 1046c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1047c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10480815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10490815d774SJordan Crouse char *name) 1050c8afe684SRob Clark { 1051c8afe684SRob Clark struct drm_gem_object *obj; 1052c8afe684SRob Clark int ret; 1053c8afe684SRob Clark 1054c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1055c8afe684SRob Clark 1056c8afe684SRob Clark if (IS_ERR(obj)) 1057c8afe684SRob Clark return PTR_ERR(obj); 1058c8afe684SRob Clark 10590815d774SJordan Crouse if (name) 10600815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10610815d774SJordan Crouse 1062c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1063c8afe684SRob Clark 1064c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1065f7d33950SEmil Velikov drm_gem_object_put(obj); 1066c8afe684SRob Clark 1067c8afe684SRob Clark return ret; 1068c8afe684SRob Clark } 1069c8afe684SRob Clark 10703c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10713c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10723c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10733c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10743c9edd9cSThomas Zimmermann }; 10753c9edd9cSThomas Zimmermann 10763c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10773c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10783c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10793c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10803c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10813c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10823c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 10833c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10843c9edd9cSThomas Zimmermann }; 10853c9edd9cSThomas Zimmermann 108605b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 108705b84911SRob Clark uint32_t size, uint32_t flags, 10883cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1089c8afe684SRob Clark { 1090c8afe684SRob Clark struct msm_gem_object *msm_obj; 1091c8afe684SRob Clark 1092c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1093c8afe684SRob Clark case MSM_BO_UNCACHED: 1094c8afe684SRob Clark case MSM_BO_CACHED: 1095c8afe684SRob Clark case MSM_BO_WC: 1096c8afe684SRob Clark break; 1097c8afe684SRob Clark default: 10986a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 1099c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 110005b84911SRob Clark return -EINVAL; 1101c8afe684SRob Clark } 1102c8afe684SRob Clark 1103667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 110405b84911SRob Clark if (!msm_obj) 110505b84911SRob Clark return -ENOMEM; 1106c8afe684SRob Clark 1107c8afe684SRob Clark msm_obj->flags = flags; 11084cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1109c8afe684SRob Clark 11107198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 11114b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11124b85f7f5SRob Clark 111305b84911SRob Clark *obj = &msm_obj->base; 11143c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 111505b84911SRob Clark 111605b84911SRob Clark return 0; 111705b84911SRob Clark } 111805b84911SRob Clark 11190e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 11200e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 112105b84911SRob Clark { 1122f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11233cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1124871d812aSRob Clark struct drm_gem_object *obj = NULL; 1125f4839bd5SRob Clark bool use_vram = false; 112605b84911SRob Clark int ret; 112705b84911SRob Clark 112805b84911SRob Clark size = PAGE_ALIGN(size); 112905b84911SRob Clark 1130c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1131f4839bd5SRob Clark use_vram = true; 113286f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1133f4839bd5SRob Clark use_vram = true; 1134f4839bd5SRob Clark 113590643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1136f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1137f4839bd5SRob Clark 11381a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11391a5dff5dSJordan Crouse * infrastructure grumpy 11401a5dff5dSJordan Crouse */ 11411a5dff5dSJordan Crouse if (size == 0) 11421a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11431a5dff5dSJordan Crouse 11443cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 114505b84911SRob Clark if (ret) 114605b84911SRob Clark goto fail; 114705b84911SRob Clark 11483cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11493cbdc8d8SAkhil P Oommen 1150f4839bd5SRob Clark if (use_vram) { 11514b85f7f5SRob Clark struct msm_gem_vma *vma; 1152f4839bd5SRob Clark struct page **pages; 1153b3949a9aSHans Verkuil 1154a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1155a694ffedSIskren Chernev 1156a6ae74c9SRob Clark msm_gem_lock(obj); 1157f4839bd5SRob Clark 11584b85f7f5SRob Clark vma = add_vma(obj, NULL); 1159a6ae74c9SRob Clark msm_gem_unlock(obj); 11604b85f7f5SRob Clark if (IS_ERR(vma)) { 11614b85f7f5SRob Clark ret = PTR_ERR(vma); 11624b85f7f5SRob Clark goto fail; 11634b85f7f5SRob Clark } 11644b85f7f5SRob Clark 11654b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11664b85f7f5SRob Clark 116707fcad0dSIskren Chernev msm_gem_lock(obj); 1168f4839bd5SRob Clark pages = get_pages(obj); 116907fcad0dSIskren Chernev msm_gem_unlock(obj); 1170f4839bd5SRob Clark if (IS_ERR(pages)) { 1171f4839bd5SRob Clark ret = PTR_ERR(pages); 1172f4839bd5SRob Clark goto fail; 1173f4839bd5SRob Clark } 11744b85f7f5SRob Clark 11754b85f7f5SRob Clark vma->iova = physaddr(obj); 1176f4839bd5SRob Clark } else { 117705b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 117805b84911SRob Clark if (ret) 117905b84911SRob Clark goto fail; 11800abdba47SLucas Stach /* 11810abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11820abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11830abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11840abdba47SLucas Stach * expected if you're going to pin these pages. 11850abdba47SLucas Stach */ 11860abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1187871d812aSRob Clark } 118805b84911SRob Clark 1189d984457bSRob Clark mutex_lock(&priv->mm_lock); 11903edfa30fSRob Clark /* Initially obj is idle, obj->madv == WILLNEED: */ 11913edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 1192d984457bSRob Clark mutex_unlock(&priv->mm_lock); 11933cbdc8d8SAkhil P Oommen 11946ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11956ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11966ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11976ed0897cSRob Clark 119805b84911SRob Clark return obj; 119905b84911SRob Clark 120005b84911SRob Clark fail: 1201ce0a9dc0SRob Clark if (struct_mutex_locked) { 1202ce0a9dc0SRob Clark drm_gem_object_put_locked(obj); 1203ce0a9dc0SRob Clark } else { 1204f7d33950SEmil Velikov drm_gem_object_put(obj); 1205ce0a9dc0SRob Clark } 120605b84911SRob Clark return ERR_PTR(ret); 120705b84911SRob Clark } 120805b84911SRob Clark 12090e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 12100e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12110e08270aSSushmita Susheelendra { 12120e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 12130e08270aSSushmita Susheelendra } 12140e08270aSSushmita Susheelendra 12150e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 12160e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12170e08270aSSushmita Susheelendra { 12180e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 12190e08270aSSushmita Susheelendra } 12200e08270aSSushmita Susheelendra 122105b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 122279f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 122305b84911SRob Clark { 12243cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 122505b84911SRob Clark struct msm_gem_object *msm_obj; 122605b84911SRob Clark struct drm_gem_object *obj; 122779f0e202SRob Clark uint32_t size; 122805b84911SRob Clark int ret, npages; 122905b84911SRob Clark 1230871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1231c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12326a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1233871d812aSRob Clark return ERR_PTR(-EINVAL); 1234871d812aSRob Clark } 1235871d812aSRob Clark 123679f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 123705b84911SRob Clark 12383cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 123905b84911SRob Clark if (ret) 124005b84911SRob Clark goto fail; 124105b84911SRob Clark 124205b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 124305b84911SRob Clark 124405b84911SRob Clark npages = size / PAGE_SIZE; 124505b84911SRob Clark 124605b84911SRob Clark msm_obj = to_msm_bo(obj); 1247a6ae74c9SRob Clark msm_gem_lock(obj); 124805b84911SRob Clark msm_obj->sgt = sgt; 12492098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 125005b84911SRob Clark if (!msm_obj->pages) { 1251a6ae74c9SRob Clark msm_gem_unlock(obj); 125205b84911SRob Clark ret = -ENOMEM; 125305b84911SRob Clark goto fail; 125405b84911SRob Clark } 125505b84911SRob Clark 1256c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12570e08270aSSushmita Susheelendra if (ret) { 1258a6ae74c9SRob Clark msm_gem_unlock(obj); 125905b84911SRob Clark goto fail; 12600e08270aSSushmita Susheelendra } 126105b84911SRob Clark 1262a6ae74c9SRob Clark msm_gem_unlock(obj); 12633cbdc8d8SAkhil P Oommen 1264d984457bSRob Clark mutex_lock(&priv->mm_lock); 12653edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 1266d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12673cbdc8d8SAkhil P Oommen 12686ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12696ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12706ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12716ed0897cSRob Clark 1272c8afe684SRob Clark return obj; 1273c8afe684SRob Clark 1274c8afe684SRob Clark fail: 1275f7d33950SEmil Velikov drm_gem_object_put(obj); 1276c8afe684SRob Clark return ERR_PTR(ret); 1277c8afe684SRob Clark } 12788223286dSJordan Crouse 12798223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12808223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12818223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 12828223286dSJordan Crouse { 12838223286dSJordan Crouse void *vaddr; 12848223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 12858223286dSJordan Crouse int ret; 12868223286dSJordan Crouse 12878223286dSJordan Crouse if (IS_ERR(obj)) 12888223286dSJordan Crouse return ERR_CAST(obj); 12898223286dSJordan Crouse 12908223286dSJordan Crouse if (iova) { 12919fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 129293f7abf1SJordan Crouse if (ret) 129393f7abf1SJordan Crouse goto err; 12948223286dSJordan Crouse } 12958223286dSJordan Crouse 12968223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1297c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12987ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 129993f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 130093f7abf1SJordan Crouse goto err; 13018223286dSJordan Crouse } 13028223286dSJordan Crouse 13038223286dSJordan Crouse if (bo) 13048223286dSJordan Crouse *bo = obj; 13058223286dSJordan Crouse 13068223286dSJordan Crouse return vaddr; 130793f7abf1SJordan Crouse err: 130893f7abf1SJordan Crouse if (locked) 1309eecd7fd8SEmil Velikov drm_gem_object_put_locked(obj); 131093f7abf1SJordan Crouse else 1311f7d33950SEmil Velikov drm_gem_object_put(obj); 131293f7abf1SJordan Crouse 131393f7abf1SJordan Crouse return ERR_PTR(ret); 131493f7abf1SJordan Crouse 13158223286dSJordan Crouse } 13168223286dSJordan Crouse 13178223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13188223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13198223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13208223286dSJordan Crouse { 13218223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 13228223286dSJordan Crouse } 13238223286dSJordan Crouse 13248223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 13258223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13268223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13278223286dSJordan Crouse { 13288223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 13298223286dSJordan Crouse } 13301e29dff0SJordan Crouse 13311e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 13321e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 13331e29dff0SJordan Crouse { 13341e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13351e29dff0SJordan Crouse return; 13361e29dff0SJordan Crouse 13371e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13387ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 13391e29dff0SJordan Crouse 13401e29dff0SJordan Crouse if (locked) 1341eecd7fd8SEmil Velikov drm_gem_object_put_locked(bo); 13421e29dff0SJordan Crouse else 1343f7d33950SEmil Velikov drm_gem_object_put(bo); 13441e29dff0SJordan Crouse } 13450815d774SJordan Crouse 13460815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13470815d774SJordan Crouse { 13480815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13490815d774SJordan Crouse va_list ap; 13500815d774SJordan Crouse 13510815d774SJordan Crouse if (!fmt) 13520815d774SJordan Crouse return; 13530815d774SJordan Crouse 13540815d774SJordan Crouse va_start(ap, fmt); 13550815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13560815d774SJordan Crouse va_end(ap); 13570815d774SJordan Crouse } 1358