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); 165b9a31d0dSRob 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 36020d0ae2fSRob Clark /** 36120d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 36220d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 36320d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 36420d0ae2fSRob Clark * mapping. 36520d0ae2fSRob Clark */ 3664fe5f65eSRob Clark static void 36720d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3684fe5f65eSRob Clark { 3694fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3709b73bde3SIskren Chernev struct msm_gem_vma *vma; 3714fe5f65eSRob Clark 37290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3734fe5f65eSRob Clark 3749b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 375d67f1b6dSBrian Masney if (vma->aspace) { 3767ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 37720d0ae2fSRob Clark if (close) 3787ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 379d67f1b6dSBrian Masney } 3809b73bde3SIskren Chernev } 3819b73bde3SIskren Chernev } 3829b73bde3SIskren Chernev 3839b73bde3SIskren Chernev /* Called with msm_obj locked */ 3849b73bde3SIskren Chernev static void 3859b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3864fe5f65eSRob Clark { 3874fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3884fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3894fe5f65eSRob Clark 39090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3914fe5f65eSRob Clark 3924fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3934b85f7f5SRob Clark del_vma(vma); 3944fe5f65eSRob Clark } 3954fe5f65eSRob Clark } 3964fe5f65eSRob Clark 3978117e5e5SRob Clark static int get_iova_locked(struct drm_gem_object *obj, 398d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 399d3b8877eSJonathan Marek u64 range_start, u64 range_end) 400c8afe684SRob Clark { 4014b85f7f5SRob Clark struct msm_gem_vma *vma; 402c8afe684SRob Clark int ret = 0; 403c8afe684SRob Clark 40490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 405cb1e3818SRob Clark 4064b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 407871d812aSRob Clark 4084b85f7f5SRob Clark if (!vma) { 4094b85f7f5SRob Clark vma = add_vma(obj, aspace); 410c0ee9794SJordan Crouse if (IS_ERR(vma)) 411c0ee9794SJordan Crouse return PTR_ERR(vma); 4124b85f7f5SRob Clark 413d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 414d3b8877eSJonathan Marek range_start, range_end); 415c0ee9794SJordan Crouse if (ret) { 416c0ee9794SJordan Crouse del_vma(vma); 417c0ee9794SJordan Crouse return ret; 418c8afe684SRob Clark } 4194b85f7f5SRob Clark } 4204b85f7f5SRob Clark 4214b85f7f5SRob Clark *iova = vma->iova; 4224b85f7f5SRob Clark return 0; 423c0ee9794SJordan Crouse } 4244b85f7f5SRob Clark 425c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 426c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 427c0ee9794SJordan Crouse { 428c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 429c0ee9794SJordan Crouse struct msm_gem_vma *vma; 430c0ee9794SJordan Crouse struct page **pages; 431bbc2cd07SRob Clark int prot = IOMMU_READ; 432bbc2cd07SRob Clark 433bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 434bbc2cd07SRob Clark prot |= IOMMU_WRITE; 435c0ee9794SJordan Crouse 4360b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4370b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4380b462d7aSJonathan Marek 43990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 440c0ee9794SJordan Crouse 44190643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 442c0ee9794SJordan Crouse return -EBUSY; 443c0ee9794SJordan Crouse 444c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 44590643a24SRob Clark if (GEM_WARN_ON(!vma)) 446c0ee9794SJordan Crouse return -EINVAL; 447c0ee9794SJordan Crouse 448c0ee9794SJordan Crouse pages = get_pages(obj); 449c0ee9794SJordan Crouse if (IS_ERR(pages)) 450c0ee9794SJordan Crouse return PTR_ERR(pages); 451c0ee9794SJordan Crouse 452bbc2cd07SRob Clark return msm_gem_map_vma(aspace, vma, prot, 453bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 454c0ee9794SJordan Crouse } 455c0ee9794SJordan Crouse 456e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 457d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 458d3b8877eSJonathan Marek u64 range_start, u64 range_end) 459c0ee9794SJordan Crouse { 460c0ee9794SJordan Crouse u64 local; 461c0ee9794SJordan Crouse int ret; 462c0ee9794SJordan Crouse 46390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 464c0ee9794SJordan Crouse 4658117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 466d3b8877eSJonathan Marek range_start, range_end); 467c0ee9794SJordan Crouse 468c0ee9794SJordan Crouse if (!ret) 469c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 470c0ee9794SJordan Crouse 471c0ee9794SJordan Crouse if (!ret) 472c0ee9794SJordan Crouse *iova = local; 473c0ee9794SJordan Crouse 474c8afe684SRob Clark return ret; 475c8afe684SRob Clark } 476c8afe684SRob Clark 477e4b87d22SRob Clark /* 478e4b87d22SRob Clark * get iova and pin it. Should have a matching put 479e4b87d22SRob Clark * limits iova to specified range (in pages) 480e4b87d22SRob Clark */ 481e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 482e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 483e4b87d22SRob Clark u64 range_start, u64 range_end) 484e4b87d22SRob Clark { 485e4b87d22SRob Clark int ret; 486e4b87d22SRob Clark 487e4b87d22SRob Clark msm_gem_lock(obj); 488e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 489e4b87d22SRob Clark msm_gem_unlock(obj); 490e4b87d22SRob Clark 491e4b87d22SRob Clark return ret; 492e4b87d22SRob Clark } 493e4b87d22SRob Clark 494e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 495e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 496e4b87d22SRob Clark { 497e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 498e4b87d22SRob Clark } 499e4b87d22SRob Clark 500d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 501d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 502d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 503d3b8877eSJonathan Marek { 504d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 505d3b8877eSJonathan Marek } 506d3b8877eSJonathan Marek 5077ad0e8cfSJordan Crouse /* 5087ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5097ad0e8cfSJordan Crouse * valid for the life of the object 5107ad0e8cfSJordan Crouse */ 5119fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5129fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5139fe041f6SJordan Crouse { 5149fe041f6SJordan Crouse int ret; 5159fe041f6SJordan Crouse 516a6ae74c9SRob Clark msm_gem_lock(obj); 5178117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 518a6ae74c9SRob Clark msm_gem_unlock(obj); 5199fe041f6SJordan Crouse 5209fe041f6SJordan Crouse return ret; 5219fe041f6SJordan Crouse } 5229fe041f6SJordan Crouse 5232638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5249fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5252638d90aSRob Clark */ 5268bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5278bdcd949SRob Clark struct msm_gem_address_space *aspace) 5282638d90aSRob Clark { 5294b85f7f5SRob Clark struct msm_gem_vma *vma; 5304b85f7f5SRob Clark 531a6ae74c9SRob Clark msm_gem_lock(obj); 5324b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 533a6ae74c9SRob Clark msm_gem_unlock(obj); 53490643a24SRob Clark GEM_WARN_ON(!vma); 5354b85f7f5SRob Clark 5364b85f7f5SRob Clark return vma ? vma->iova : 0; 5372638d90aSRob Clark } 5382638d90aSRob Clark 5397ad0e8cfSJordan Crouse /* 540e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 541e4b87d22SRob Clark */ 542e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 543e4b87d22SRob Clark struct msm_gem_address_space *aspace) 544e4b87d22SRob Clark { 545e4b87d22SRob Clark struct msm_gem_vma *vma; 546e4b87d22SRob Clark 54790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 548e4b87d22SRob Clark 549e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 550e4b87d22SRob Clark 55190643a24SRob Clark if (!GEM_WARN_ON(!vma)) 552e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 553e4b87d22SRob Clark } 554e4b87d22SRob Clark 555e4b87d22SRob Clark /* 5567ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5577ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5587ad0e8cfSJordan Crouse * to get rid of it 5597ad0e8cfSJordan Crouse */ 5607ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5618bdcd949SRob Clark struct msm_gem_address_space *aspace) 562c8afe684SRob Clark { 563a6ae74c9SRob Clark msm_gem_lock(obj); 564e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 565a6ae74c9SRob Clark msm_gem_unlock(obj); 566c8afe684SRob Clark } 567c8afe684SRob Clark 568c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 569c8afe684SRob Clark struct drm_mode_create_dumb *args) 570c8afe684SRob Clark { 571c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 572c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 573c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5740815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 575c8afe684SRob Clark } 576c8afe684SRob Clark 577c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 578c8afe684SRob Clark uint32_t handle, uint64_t *offset) 579c8afe684SRob Clark { 580c8afe684SRob Clark struct drm_gem_object *obj; 581c8afe684SRob Clark int ret = 0; 582c8afe684SRob Clark 583c8afe684SRob Clark /* GEM does all our handle to object mapping */ 584a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 585c8afe684SRob Clark if (obj == NULL) { 586c8afe684SRob Clark ret = -ENOENT; 587c8afe684SRob Clark goto fail; 588c8afe684SRob Clark } 589c8afe684SRob Clark 590c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 591c8afe684SRob Clark 592f7d33950SEmil Velikov drm_gem_object_put(obj); 593c8afe684SRob Clark 594c8afe684SRob Clark fail: 595c8afe684SRob Clark return ret; 596c8afe684SRob Clark } 597c8afe684SRob Clark 598fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 599c8afe684SRob Clark { 6000e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6010e08270aSSushmita Susheelendra int ret = 0; 6020e08270aSSushmita Susheelendra 60390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 604e4b87d22SRob Clark 6058b6b7d84SDaniel Vetter if (obj->import_attach) 6068b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6078b6b7d84SDaniel Vetter 60890643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6096a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 610fad33f4bSRob Clark msm_obj->madv, madv); 6110e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 612c8afe684SRob Clark } 613c8afe684SRob Clark 6140e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 615a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6160e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6170e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 618a6ae74c9SRob Clark * hold msm_obj lock) 6190e08270aSSushmita Susheelendra */ 6200e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6210e08270aSSushmita Susheelendra 6220e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6230e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6240e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6250e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6260e08270aSSushmita Susheelendra goto fail; 6270e08270aSSushmita Susheelendra } 6280e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 6290e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 6300e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6310e08270aSSushmita Susheelendra ret = -ENOMEM; 6320e08270aSSushmita Susheelendra goto fail; 6330e08270aSSushmita Susheelendra } 6340e08270aSSushmita Susheelendra } 6350e08270aSSushmita Susheelendra 6360e08270aSSushmita Susheelendra return msm_obj->vaddr; 6370e08270aSSushmita Susheelendra 6380e08270aSSushmita Susheelendra fail: 639e1e9db2cSRob Clark msm_obj->vmap_count--; 6400e08270aSSushmita Susheelendra return ERR_PTR(ret); 64118f23049SRob Clark } 64218f23049SRob Clark 643e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 644e4b87d22SRob Clark { 645e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 646e4b87d22SRob Clark } 647e4b87d22SRob Clark 648fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 649fad33f4bSRob Clark { 650e4b87d22SRob Clark void *ret; 651e4b87d22SRob Clark 652e4b87d22SRob Clark msm_gem_lock(obj); 653e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 654e4b87d22SRob Clark msm_gem_unlock(obj); 655e4b87d22SRob Clark 656e4b87d22SRob Clark return ret; 657fad33f4bSRob Clark } 658fad33f4bSRob Clark 659fad33f4bSRob Clark /* 660fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 661fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 662fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 663fad33f4bSRob Clark * active list. 664fad33f4bSRob Clark */ 665fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 666fad33f4bSRob Clark { 667fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 668fad33f4bSRob Clark } 669fad33f4bSRob Clark 670e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 67118f23049SRob Clark { 6720e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6730e08270aSSushmita Susheelendra 67490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 67590643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 676e4b87d22SRob Clark 6770e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6784cd33c48SRob Clark } 6790e08270aSSushmita Susheelendra 6800e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6814cd33c48SRob Clark { 682a6ae74c9SRob Clark msm_gem_lock(obj); 683e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 684a6ae74c9SRob Clark msm_gem_unlock(obj); 6854cd33c48SRob Clark } 6864cd33c48SRob Clark 6874cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6884cd33c48SRob Clark * false or -errno. 6894cd33c48SRob Clark */ 6904cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6914cd33c48SRob Clark { 6924cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69368209390SRob Clark 694a6ae74c9SRob Clark msm_gem_lock(obj); 695c8afe684SRob Clark 696c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 697c8afe684SRob Clark msm_obj->madv = madv; 698c8afe684SRob Clark 6990e08270aSSushmita Susheelendra madv = msm_obj->madv; 7000e08270aSSushmita Susheelendra 7013edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7023edfa30fSRob Clark * between inactive lists 7033edfa30fSRob Clark */ 7043edfa30fSRob Clark if (msm_obj->active_count == 0) 7053edfa30fSRob Clark update_inactive(msm_obj); 7063edfa30fSRob Clark 707a6ae74c9SRob Clark msm_gem_unlock(obj); 7080e08270aSSushmita Susheelendra 7090e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 710c8afe684SRob Clark } 711c8afe684SRob Clark 712599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 71368209390SRob Clark { 71468209390SRob Clark struct drm_device *dev = obj->dev; 71568209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 71668209390SRob Clark 71790643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 71890643a24SRob Clark GEM_WARN_ON(obj->import_attach); 71968209390SRob Clark 72020d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 72120d0ae2fSRob Clark put_iova_spaces(obj, true); 7220e08270aSSushmita Susheelendra 723599089c6SRob Clark msm_gem_vunmap(obj); 72468209390SRob Clark 72568209390SRob Clark put_pages(obj); 72668209390SRob Clark 7279b73bde3SIskren Chernev put_iova_vmas(obj); 7289b73bde3SIskren Chernev 72968209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 73025ed38b3SRob Clark update_inactive(msm_obj); 73168209390SRob Clark 73268209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 73368209390SRob Clark drm_gem_free_mmap_offset(obj); 73468209390SRob Clark 73568209390SRob Clark /* Our goal here is to return as much of the memory as 73668209390SRob Clark * is possible back to the system as we are called from OOM. 73768209390SRob Clark * To do this we must instruct the shmfs to drop all of its 73868209390SRob Clark * backing pages, *now*. 73968209390SRob Clark */ 74068209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 74168209390SRob Clark 74268209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 74368209390SRob Clark 0, (loff_t)-1); 74468209390SRob Clark } 74568209390SRob Clark 746599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 747e1e9db2cSRob Clark { 748e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 749e1e9db2cSRob Clark 75090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7510e08270aSSushmita Susheelendra 75290643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 753e1e9db2cSRob Clark return; 754e1e9db2cSRob Clark 755e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 756e1e9db2cSRob Clark msm_obj->vaddr = NULL; 757e1e9db2cSRob Clark } 758e1e9db2cSRob Clark 759b6295f9aSRob Clark /* must be called before _move_to_active().. */ 760b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 761b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 762b6295f9aSRob Clark { 76352791eeeSChristian König struct dma_resv_list *fobj; 764f54d1867SChris Wilson struct dma_fence *fence; 765b6295f9aSRob Clark int i, ret; 766b6295f9aSRob Clark 76752791eeeSChristian König fobj = dma_resv_get_list(obj->resv); 768b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 76952791eeeSChristian König fence = dma_resv_get_excl(obj->resv); 770b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 771b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 772f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 773b6295f9aSRob Clark if (ret) 774b6295f9aSRob Clark return ret; 775b6295f9aSRob Clark } 776b6295f9aSRob Clark } 777b6295f9aSRob Clark 778b6295f9aSRob Clark if (!exclusive || !fobj) 779b6295f9aSRob Clark return 0; 780b6295f9aSRob Clark 781b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 782b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 78352791eeeSChristian König dma_resv_held(obj->resv)); 784b6295f9aSRob Clark if (fence->context != fctx->context) { 785f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 786b6295f9aSRob Clark if (ret) 787b6295f9aSRob Clark return ret; 788b6295f9aSRob Clark } 789b6295f9aSRob Clark } 790b6295f9aSRob Clark 791b6295f9aSRob Clark return 0; 792b6295f9aSRob Clark } 793b6295f9aSRob Clark 7949d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7957198e6b0SRob Clark { 7967198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 797d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 798d984457bSRob Clark 799d984457bSRob Clark might_sleep(); 80090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 80190643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 80290643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 8039d8baa2bSAkhil P Oommen 804ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 805d984457bSRob Clark mutex_lock(&priv->mm_lock); 806cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 8077198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 808d984457bSRob Clark mutex_unlock(&priv->mm_lock); 8097198e6b0SRob Clark } 8109d8baa2bSAkhil P Oommen } 8117198e6b0SRob Clark 8129d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8137198e6b0SRob Clark { 8147198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8157198e6b0SRob Clark 816d984457bSRob Clark might_sleep(); 81790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8187198e6b0SRob Clark 819ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8203edfa30fSRob Clark update_inactive(msm_obj); 8217198e6b0SRob Clark } 8229d8baa2bSAkhil P Oommen } 8237198e6b0SRob Clark 8243edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8253edfa30fSRob Clark { 8263edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8273edfa30fSRob Clark 8283edfa30fSRob Clark mutex_lock(&priv->mm_lock); 82990643a24SRob Clark GEM_WARN_ON(msm_obj->active_count != 0); 8303edfa30fSRob Clark 831cc8a4d5aSRob Clark if (msm_obj->dontneed) 8320054eeb7SRob Clark mark_unpurgeable(msm_obj); 833cc8a4d5aSRob Clark 834cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 835cc8a4d5aSRob Clark if (msm_obj->madv == MSM_MADV_WILLNEED) { 8363edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 837cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8383edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8390054eeb7SRob Clark mark_purgeable(msm_obj); 840cc8a4d5aSRob Clark } else { 84190643a24SRob Clark GEM_WARN_ON(msm_obj->madv != __MSM_MADV_PURGED); 842cc8a4d5aSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_purged); 843cc8a4d5aSRob Clark } 8443edfa30fSRob Clark 8453edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8463edfa30fSRob Clark } 8473edfa30fSRob Clark 848ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 849ba00c3f2SRob Clark { 850b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 851f755e227SChris Wilson unsigned long remain = 852f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 853f755e227SChris Wilson long ret; 854b6295f9aSRob Clark 85552791eeeSChristian König ret = dma_resv_wait_timeout_rcu(obj->resv, write, 856f755e227SChris Wilson true, remain); 857f755e227SChris Wilson if (ret == 0) 858f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 859f755e227SChris Wilson else if (ret < 0) 860f755e227SChris Wilson return ret; 861ba00c3f2SRob Clark 8627198e6b0SRob Clark /* TODO cache maintenance */ 8637198e6b0SRob Clark 864b6295f9aSRob Clark return 0; 8657198e6b0SRob Clark } 8667198e6b0SRob Clark 8677198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8687198e6b0SRob Clark { 8697198e6b0SRob Clark /* TODO cache maintenance */ 870c8afe684SRob Clark return 0; 871c8afe684SRob Clark } 872c8afe684SRob Clark 873c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 874f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 875b6295f9aSRob Clark struct seq_file *m) 876b6295f9aSRob Clark { 877f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 878a3115621SDave Airlie seq_printf(m, "\t%9s: %s %s seq %llu\n", type, 879b6295f9aSRob Clark fence->ops->get_driver_name(fence), 880b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 881b6295f9aSRob Clark fence->seqno); 882b6295f9aSRob Clark } 883b6295f9aSRob Clark 884528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 885528107c8SRob Clark struct msm_gem_stats *stats) 886c8afe684SRob Clark { 887c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 88852791eeeSChristian König struct dma_resv *robj = obj->resv; 88952791eeeSChristian König struct dma_resv_list *fobj; 890f54d1867SChris Wilson struct dma_fence *fence; 8914b85f7f5SRob Clark struct msm_gem_vma *vma; 892c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8934cd33c48SRob Clark const char *madv; 894c8afe684SRob Clark 895a6ae74c9SRob Clark msm_gem_lock(obj); 896b6295f9aSRob Clark 897528107c8SRob Clark stats->all.count++; 898528107c8SRob Clark stats->all.size += obj->size; 899528107c8SRob Clark 900528107c8SRob Clark if (is_active(msm_obj)) { 901528107c8SRob Clark stats->active.count++; 902528107c8SRob Clark stats->active.size += obj->size; 903528107c8SRob Clark } 904528107c8SRob Clark 905*f48f3563SRob Clark if (msm_obj->pages) { 906*f48f3563SRob Clark stats->resident.count++; 907*f48f3563SRob Clark stats->resident.size += obj->size; 908*f48f3563SRob Clark } 909*f48f3563SRob Clark 9104cd33c48SRob Clark switch (msm_obj->madv) { 9114cd33c48SRob Clark case __MSM_MADV_PURGED: 912528107c8SRob Clark stats->purged.count++; 913528107c8SRob Clark stats->purged.size += obj->size; 9144cd33c48SRob Clark madv = " purged"; 9154cd33c48SRob Clark break; 9164cd33c48SRob Clark case MSM_MADV_DONTNEED: 9170054eeb7SRob Clark stats->purgeable.count++; 9180054eeb7SRob Clark stats->purgeable.size += obj->size; 9194cd33c48SRob Clark madv = " purgeable"; 9204cd33c48SRob Clark break; 9214cd33c48SRob Clark case MSM_MADV_WILLNEED: 9224cd33c48SRob Clark default: 9234cd33c48SRob Clark madv = ""; 9244cd33c48SRob Clark break; 9254cd33c48SRob Clark } 9264cd33c48SRob Clark 927575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9287198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9292c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 930667ce33eSRob Clark off, msm_obj->vaddr); 931667ce33eSRob Clark 9320815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 933667ce33eSRob Clark 934575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 935575f0485SJordan Crouse 936575f0485SJordan Crouse seq_puts(m, " vmas:"); 937575f0485SJordan Crouse 93825faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 93925faf2f2SRob Clark const char *name, *comm; 94025faf2f2SRob Clark if (vma->aspace) { 94125faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 94225faf2f2SRob Clark struct task_struct *task = 94325faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 94425faf2f2SRob Clark if (task) { 94525faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 94625faf2f2SRob Clark } else { 94725faf2f2SRob Clark comm = NULL; 94825faf2f2SRob Clark } 94925faf2f2SRob Clark name = aspace->name; 95025faf2f2SRob Clark } else { 95125faf2f2SRob Clark name = comm = NULL; 95225faf2f2SRob Clark } 95325faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 95425faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 95525faf2f2SRob Clark vma->aspace, vma->iova, 95625faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 9577ad0e8cfSJordan Crouse vma->inuse); 95825faf2f2SRob Clark kfree(comm); 95925faf2f2SRob Clark } 960575f0485SJordan Crouse 961575f0485SJordan Crouse seq_puts(m, "\n"); 962575f0485SJordan Crouse } 963b6295f9aSRob Clark 964b6295f9aSRob Clark rcu_read_lock(); 965b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 966b6295f9aSRob Clark if (fobj) { 967b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 968b6295f9aSRob Clark 969b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 970b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 971b6295f9aSRob Clark describe_fence(fence, "Shared", m); 972b6295f9aSRob Clark } 973b6295f9aSRob Clark } 974b6295f9aSRob Clark 975b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 976b6295f9aSRob Clark if (fence) 977b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 978b6295f9aSRob Clark rcu_read_unlock(); 9790e08270aSSushmita Susheelendra 980a6ae74c9SRob Clark msm_gem_unlock(obj); 981c8afe684SRob Clark } 982c8afe684SRob Clark 983c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 984c8afe684SRob Clark { 985528107c8SRob Clark struct msm_gem_stats stats = {}; 986c8afe684SRob Clark struct msm_gem_object *msm_obj; 987c8afe684SRob Clark 9880815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9896ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 990c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 991575f0485SJordan Crouse seq_puts(m, " "); 992528107c8SRob Clark msm_gem_describe(obj, m, &stats); 993c8afe684SRob Clark } 994c8afe684SRob Clark 995528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 996528107c8SRob Clark stats.all.count, stats.all.size); 997528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 998528107c8SRob Clark stats.active.count, stats.active.size); 999*f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1000*f48f3563SRob Clark stats.resident.count, stats.resident.size); 1001f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10020054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1003528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1004528107c8SRob Clark stats.purged.count, stats.purged.size); 1005c8afe684SRob Clark } 1006c8afe684SRob Clark #endif 1007c8afe684SRob Clark 1008eecd7fd8SEmil Velikov /* don't call directly! Use drm_gem_object_put_locked() and friends */ 1009c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 1010c8afe684SRob Clark { 1011c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 101248e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 101348e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 101448e7f183SKristian H. Kristensen 10156ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10166ed0897cSRob Clark list_del(&msm_obj->node); 10176ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10186ed0897cSRob Clark 1019d984457bSRob Clark mutex_lock(&priv->mm_lock); 1020cc8a4d5aSRob Clark if (msm_obj->dontneed) 10210054eeb7SRob Clark mark_unpurgeable(msm_obj); 1022c8afe684SRob Clark list_del(&msm_obj->mm_list); 1023d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1024c8afe684SRob Clark 1025a6ae74c9SRob Clark msm_gem_lock(obj); 1026c8afe684SRob Clark 1027c8afe684SRob Clark /* object should not be on active list: */ 102890643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 1029c8afe684SRob Clark 103020d0ae2fSRob Clark put_iova_spaces(obj, true); 1031c8afe684SRob Clark 103205b84911SRob Clark if (obj->import_attach) { 103390643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 103405b84911SRob Clark 103505b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 103605b84911SRob Clark * ours, just free the array we allocated: 103705b84911SRob Clark */ 10382098105eSMichal Hocko kvfree(msm_obj->pages); 103905b84911SRob Clark 104057f04815SRob Clark put_iova_vmas(obj); 104157f04815SRob Clark 10426c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 10436c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 10446c0e3ea2SRob Clark */ 10456c0e3ea2SRob Clark msm_gem_unlock(obj); 10466c0e3ea2SRob Clark 1047f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 104805b84911SRob Clark } else { 1049599089c6SRob Clark msm_gem_vunmap(obj); 1050c8afe684SRob Clark put_pages(obj); 105157f04815SRob Clark put_iova_vmas(obj); 10526c0e3ea2SRob Clark msm_gem_unlock(obj); 105305b84911SRob Clark } 1054c8afe684SRob Clark 1055c8afe684SRob Clark drm_gem_object_release(obj); 1056c8afe684SRob Clark 1057c8afe684SRob Clark kfree(msm_obj); 1058c8afe684SRob Clark } 1059c8afe684SRob Clark 1060c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1061c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10620815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10630815d774SJordan Crouse char *name) 1064c8afe684SRob Clark { 1065c8afe684SRob Clark struct drm_gem_object *obj; 1066c8afe684SRob Clark int ret; 1067c8afe684SRob Clark 1068c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1069c8afe684SRob Clark 1070c8afe684SRob Clark if (IS_ERR(obj)) 1071c8afe684SRob Clark return PTR_ERR(obj); 1072c8afe684SRob Clark 10730815d774SJordan Crouse if (name) 10740815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10750815d774SJordan Crouse 1076c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1077c8afe684SRob Clark 1078c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1079f7d33950SEmil Velikov drm_gem_object_put(obj); 1080c8afe684SRob Clark 1081c8afe684SRob Clark return ret; 1082c8afe684SRob Clark } 1083c8afe684SRob Clark 10843c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10853c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10863c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10873c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10883c9edd9cSThomas Zimmermann }; 10893c9edd9cSThomas Zimmermann 10903c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10913c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10923c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10933c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10943c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10953c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10963c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 10973c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10983c9edd9cSThomas Zimmermann }; 10993c9edd9cSThomas Zimmermann 110005b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 110105b84911SRob Clark uint32_t size, uint32_t flags, 11023cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1103c8afe684SRob Clark { 1104c8afe684SRob Clark struct msm_gem_object *msm_obj; 1105c8afe684SRob Clark 1106c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1107c8afe684SRob Clark case MSM_BO_UNCACHED: 1108c8afe684SRob Clark case MSM_BO_CACHED: 1109c8afe684SRob Clark case MSM_BO_WC: 1110c8afe684SRob Clark break; 1111c8afe684SRob Clark default: 11126a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 1113c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 111405b84911SRob Clark return -EINVAL; 1115c8afe684SRob Clark } 1116c8afe684SRob Clark 1117667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 111805b84911SRob Clark if (!msm_obj) 111905b84911SRob Clark return -ENOMEM; 1120c8afe684SRob Clark 1121c8afe684SRob Clark msm_obj->flags = flags; 11224cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1123c8afe684SRob Clark 11247198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 11254b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11264b85f7f5SRob Clark 112705b84911SRob Clark *obj = &msm_obj->base; 11283c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 112905b84911SRob Clark 113005b84911SRob Clark return 0; 113105b84911SRob Clark } 113205b84911SRob Clark 11330e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 11340e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 113505b84911SRob Clark { 1136f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11373cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1138871d812aSRob Clark struct drm_gem_object *obj = NULL; 1139f4839bd5SRob Clark bool use_vram = false; 114005b84911SRob Clark int ret; 114105b84911SRob Clark 114205b84911SRob Clark size = PAGE_ALIGN(size); 114305b84911SRob Clark 1144c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1145f4839bd5SRob Clark use_vram = true; 114686f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1147f4839bd5SRob Clark use_vram = true; 1148f4839bd5SRob Clark 114990643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1150f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1151f4839bd5SRob Clark 11521a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11531a5dff5dSJordan Crouse * infrastructure grumpy 11541a5dff5dSJordan Crouse */ 11551a5dff5dSJordan Crouse if (size == 0) 11561a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11571a5dff5dSJordan Crouse 11583cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 115905b84911SRob Clark if (ret) 116005b84911SRob Clark goto fail; 116105b84911SRob Clark 11623cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11633cbdc8d8SAkhil P Oommen 1164f4839bd5SRob Clark if (use_vram) { 11654b85f7f5SRob Clark struct msm_gem_vma *vma; 1166f4839bd5SRob Clark struct page **pages; 1167b3949a9aSHans Verkuil 1168a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1169a694ffedSIskren Chernev 1170a6ae74c9SRob Clark msm_gem_lock(obj); 1171f4839bd5SRob Clark 11724b85f7f5SRob Clark vma = add_vma(obj, NULL); 1173a6ae74c9SRob Clark msm_gem_unlock(obj); 11744b85f7f5SRob Clark if (IS_ERR(vma)) { 11754b85f7f5SRob Clark ret = PTR_ERR(vma); 11764b85f7f5SRob Clark goto fail; 11774b85f7f5SRob Clark } 11784b85f7f5SRob Clark 11794b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11804b85f7f5SRob Clark 118107fcad0dSIskren Chernev msm_gem_lock(obj); 1182f4839bd5SRob Clark pages = get_pages(obj); 118307fcad0dSIskren Chernev msm_gem_unlock(obj); 1184f4839bd5SRob Clark if (IS_ERR(pages)) { 1185f4839bd5SRob Clark ret = PTR_ERR(pages); 1186f4839bd5SRob Clark goto fail; 1187f4839bd5SRob Clark } 11884b85f7f5SRob Clark 11894b85f7f5SRob Clark vma->iova = physaddr(obj); 1190f4839bd5SRob Clark } else { 119105b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 119205b84911SRob Clark if (ret) 119305b84911SRob Clark goto fail; 11940abdba47SLucas Stach /* 11950abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11960abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11970abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11980abdba47SLucas Stach * expected if you're going to pin these pages. 11990abdba47SLucas Stach */ 12000abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1201871d812aSRob Clark } 120205b84911SRob Clark 1203d984457bSRob Clark mutex_lock(&priv->mm_lock); 12043edfa30fSRob Clark /* Initially obj is idle, obj->madv == WILLNEED: */ 12053edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 1206d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12073cbdc8d8SAkhil P Oommen 12086ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12096ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12106ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12116ed0897cSRob Clark 121205b84911SRob Clark return obj; 121305b84911SRob Clark 121405b84911SRob Clark fail: 1215ce0a9dc0SRob Clark if (struct_mutex_locked) { 1216ce0a9dc0SRob Clark drm_gem_object_put_locked(obj); 1217ce0a9dc0SRob Clark } else { 1218f7d33950SEmil Velikov drm_gem_object_put(obj); 1219ce0a9dc0SRob Clark } 122005b84911SRob Clark return ERR_PTR(ret); 122105b84911SRob Clark } 122205b84911SRob Clark 12230e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 12240e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12250e08270aSSushmita Susheelendra { 12260e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 12270e08270aSSushmita Susheelendra } 12280e08270aSSushmita Susheelendra 12290e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 12300e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12310e08270aSSushmita Susheelendra { 12320e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 12330e08270aSSushmita Susheelendra } 12340e08270aSSushmita Susheelendra 123505b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 123679f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 123705b84911SRob Clark { 12383cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 123905b84911SRob Clark struct msm_gem_object *msm_obj; 124005b84911SRob Clark struct drm_gem_object *obj; 124179f0e202SRob Clark uint32_t size; 124205b84911SRob Clark int ret, npages; 124305b84911SRob Clark 1244871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1245c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12466a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1247871d812aSRob Clark return ERR_PTR(-EINVAL); 1248871d812aSRob Clark } 1249871d812aSRob Clark 125079f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 125105b84911SRob Clark 12523cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 125305b84911SRob Clark if (ret) 125405b84911SRob Clark goto fail; 125505b84911SRob Clark 125605b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 125705b84911SRob Clark 125805b84911SRob Clark npages = size / PAGE_SIZE; 125905b84911SRob Clark 126005b84911SRob Clark msm_obj = to_msm_bo(obj); 1261a6ae74c9SRob Clark msm_gem_lock(obj); 126205b84911SRob Clark msm_obj->sgt = sgt; 12632098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 126405b84911SRob Clark if (!msm_obj->pages) { 1265a6ae74c9SRob Clark msm_gem_unlock(obj); 126605b84911SRob Clark ret = -ENOMEM; 126705b84911SRob Clark goto fail; 126805b84911SRob Clark } 126905b84911SRob Clark 1270c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12710e08270aSSushmita Susheelendra if (ret) { 1272a6ae74c9SRob Clark msm_gem_unlock(obj); 127305b84911SRob Clark goto fail; 12740e08270aSSushmita Susheelendra } 127505b84911SRob Clark 1276a6ae74c9SRob Clark msm_gem_unlock(obj); 12773cbdc8d8SAkhil P Oommen 1278d984457bSRob Clark mutex_lock(&priv->mm_lock); 12793edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 1280d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12813cbdc8d8SAkhil P Oommen 12826ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12836ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12846ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12856ed0897cSRob Clark 1286c8afe684SRob Clark return obj; 1287c8afe684SRob Clark 1288c8afe684SRob Clark fail: 1289f7d33950SEmil Velikov drm_gem_object_put(obj); 1290c8afe684SRob Clark return ERR_PTR(ret); 1291c8afe684SRob Clark } 12928223286dSJordan Crouse 12938223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12948223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 12958223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 12968223286dSJordan Crouse { 12978223286dSJordan Crouse void *vaddr; 12988223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 12998223286dSJordan Crouse int ret; 13008223286dSJordan Crouse 13018223286dSJordan Crouse if (IS_ERR(obj)) 13028223286dSJordan Crouse return ERR_CAST(obj); 13038223286dSJordan Crouse 13048223286dSJordan Crouse if (iova) { 13059fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 130693f7abf1SJordan Crouse if (ret) 130793f7abf1SJordan Crouse goto err; 13088223286dSJordan Crouse } 13098223286dSJordan Crouse 13108223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1311c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13127ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 131393f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 131493f7abf1SJordan Crouse goto err; 13158223286dSJordan Crouse } 13168223286dSJordan Crouse 13178223286dSJordan Crouse if (bo) 13188223286dSJordan Crouse *bo = obj; 13198223286dSJordan Crouse 13208223286dSJordan Crouse return vaddr; 132193f7abf1SJordan Crouse err: 132293f7abf1SJordan Crouse if (locked) 1323eecd7fd8SEmil Velikov drm_gem_object_put_locked(obj); 132493f7abf1SJordan Crouse else 1325f7d33950SEmil Velikov drm_gem_object_put(obj); 132693f7abf1SJordan Crouse 132793f7abf1SJordan Crouse return ERR_PTR(ret); 132893f7abf1SJordan Crouse 13298223286dSJordan Crouse } 13308223286dSJordan Crouse 13318223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13328223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13338223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13348223286dSJordan Crouse { 13358223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 13368223286dSJordan Crouse } 13378223286dSJordan Crouse 13388223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 13398223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13408223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13418223286dSJordan Crouse { 13428223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 13438223286dSJordan Crouse } 13441e29dff0SJordan Crouse 13451e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 13461e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 13471e29dff0SJordan Crouse { 13481e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13491e29dff0SJordan Crouse return; 13501e29dff0SJordan Crouse 13511e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13527ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 13531e29dff0SJordan Crouse 13541e29dff0SJordan Crouse if (locked) 1355eecd7fd8SEmil Velikov drm_gem_object_put_locked(bo); 13561e29dff0SJordan Crouse else 1357f7d33950SEmil Velikov drm_gem_object_put(bo); 13581e29dff0SJordan Crouse } 13590815d774SJordan Crouse 13600815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13610815d774SJordan Crouse { 13620815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13630815d774SJordan Crouse va_list ap; 13640815d774SJordan Crouse 13650815d774SJordan Crouse if (!fmt) 13660815d774SJordan Crouse return; 13670815d774SJordan Crouse 13680815d774SJordan Crouse va_start(ap, fmt); 13690815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13700815d774SJordan Crouse va_end(ap); 13710815d774SJordan Crouse } 1372