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> 8f8546caaSYanteng Si #include <linux/vmalloc.h> 9c8afe684SRob Clark #include <linux/spinlock.h> 10c8afe684SRob Clark #include <linux/shmem_fs.h> 1105b84911SRob Clark #include <linux/dma-buf.h> 1201c8f1c4SDan Williams #include <linux/pfn_t.h> 13c8afe684SRob Clark 14feea39a8SSam Ravnborg #include <drm/drm_prime.h> 15feea39a8SSam Ravnborg 16c8afe684SRob Clark #include "msm_drv.h" 17fde5de6cSRob Clark #include "msm_fence.h" 18c8afe684SRob Clark #include "msm_gem.h" 197198e6b0SRob Clark #include "msm_gpu.h" 20871d812aSRob Clark #include "msm_mmu.h" 21c8afe684SRob Clark 223edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj); 230e08270aSSushmita Susheelendra 24871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 25871d812aSRob Clark { 26871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 27871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 28871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 29871d812aSRob Clark priv->vram.paddr; 30871d812aSRob Clark } 31871d812aSRob Clark 32072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 33072f1f91SRob Clark { 34072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 35072f1f91SRob Clark return !msm_obj->vram_node; 36072f1f91SRob Clark } 37072f1f91SRob Clark 383de433c5SRob Clark /* 393de433c5SRob Clark * Cache sync.. this is a bit over-complicated, to fit dma-mapping 403de433c5SRob Clark * API. Really GPU cache is out of scope here (handled on cmdstream) 413de433c5SRob Clark * and all we need to do is invalidate newly allocated pages before 423de433c5SRob Clark * mapping to CPU as uncached/writecombine. 433de433c5SRob Clark * 443de433c5SRob Clark * On top of this, we have the added headache, that depending on 453de433c5SRob Clark * display generation, the display's iommu may be wired up to either 463de433c5SRob Clark * the toplevel drm device (mdss), or to the mdp sub-node, meaning 473de433c5SRob Clark * that here we either have dma-direct or iommu ops. 483de433c5SRob Clark * 493de433c5SRob Clark * Let this be a cautionary tail of abstraction gone wrong. 503de433c5SRob Clark */ 513de433c5SRob Clark 523de433c5SRob Clark static void sync_for_device(struct msm_gem_object *msm_obj) 533de433c5SRob Clark { 543de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 553de433c5SRob Clark 567690a33fSMarek Szyprowski dma_map_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 573de433c5SRob Clark } 583de433c5SRob Clark 593de433c5SRob Clark static void sync_for_cpu(struct msm_gem_object *msm_obj) 603de433c5SRob Clark { 613de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 623de433c5SRob Clark 637690a33fSMarek Szyprowski dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 643de433c5SRob Clark } 653de433c5SRob Clark 66871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 670e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 68871d812aSRob Clark { 69871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 70871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 71871d812aSRob Clark dma_addr_t paddr; 72871d812aSRob Clark struct page **p; 73871d812aSRob Clark int ret, i; 74871d812aSRob Clark 752098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 76871d812aSRob Clark if (!p) 77871d812aSRob Clark return ERR_PTR(-ENOMEM); 78871d812aSRob Clark 790e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 804e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 810e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 82871d812aSRob Clark if (ret) { 832098105eSMichal Hocko kvfree(p); 84871d812aSRob Clark return ERR_PTR(ret); 85871d812aSRob Clark } 86871d812aSRob Clark 87871d812aSRob Clark paddr = physaddr(obj); 88871d812aSRob Clark for (i = 0; i < npages; i++) { 89b3ed524fSChristian König p[i] = pfn_to_page(__phys_to_pfn(paddr)); 90871d812aSRob Clark paddr += PAGE_SIZE; 91871d812aSRob Clark } 92871d812aSRob Clark 93871d812aSRob Clark return p; 94871d812aSRob Clark } 95c8afe684SRob Clark 96c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 97c8afe684SRob Clark { 98c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 99c8afe684SRob Clark 10090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 10107fcad0dSIskren Chernev 102c8afe684SRob Clark if (!msm_obj->pages) { 103c8afe684SRob Clark struct drm_device *dev = obj->dev; 104871d812aSRob Clark struct page **p; 105c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 106c8afe684SRob Clark 107072f1f91SRob Clark if (use_pages(obj)) 1080cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 109871d812aSRob Clark else 110871d812aSRob Clark p = get_pages_vram(obj, npages); 111871d812aSRob Clark 112c8afe684SRob Clark if (IS_ERR(p)) { 1136a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 114c8afe684SRob Clark PTR_ERR(p)); 115c8afe684SRob Clark return p; 116c8afe684SRob Clark } 117c8afe684SRob Clark 11862e3a3e3SPrakash Kamliya msm_obj->pages = p; 11962e3a3e3SPrakash Kamliya 120707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1211f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 12262e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 123c8afe684SRob Clark 1246a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 12562e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 12662e3a3e3SPrakash Kamliya return ptr; 12762e3a3e3SPrakash Kamliya } 128c8afe684SRob Clark 129c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 130c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 131c8afe684SRob Clark */ 132c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1333de433c5SRob Clark sync_for_device(msm_obj); 13464fcbde7SRob Clark 13564fcbde7SRob Clark update_inactive(msm_obj); 136c8afe684SRob Clark } 137c8afe684SRob Clark 138c8afe684SRob Clark return msm_obj->pages; 139c8afe684SRob Clark } 140c8afe684SRob Clark 1410e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1420e08270aSSushmita Susheelendra { 1430e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1440e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1450e08270aSSushmita Susheelendra 1460e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1470e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1480e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1490e08270aSSushmita Susheelendra 1500e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1510e08270aSSushmita Susheelendra } 1520e08270aSSushmita Susheelendra 153c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 154c8afe684SRob Clark { 155c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 156c8afe684SRob Clark 157c8afe684SRob Clark if (msm_obj->pages) { 1583976626eSBen Hutchings if (msm_obj->sgt) { 1593976626eSBen Hutchings /* For non-cached buffers, ensure the new 1603976626eSBen Hutchings * pages are clean because display controller, 1613976626eSBen Hutchings * GPU, etc. are not coherent: 162c8afe684SRob Clark */ 163c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1643de433c5SRob Clark sync_for_cpu(msm_obj); 16562e3a3e3SPrakash Kamliya 166c8afe684SRob Clark sg_free_table(msm_obj->sgt); 167c8afe684SRob Clark kfree(msm_obj->sgt); 168b9a31d0dSRob Clark msm_obj->sgt = NULL; 1693976626eSBen Hutchings } 170c8afe684SRob Clark 171072f1f91SRob Clark if (use_pages(obj)) 172c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1730e08270aSSushmita Susheelendra else 1740e08270aSSushmita Susheelendra put_pages_vram(obj); 175871d812aSRob Clark 176c8afe684SRob Clark msm_obj->pages = NULL; 177c8afe684SRob Clark } 178c8afe684SRob Clark } 179c8afe684SRob Clark 18005b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 18105b84911SRob Clark { 1820e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 18305b84911SRob Clark struct page **p; 1840e08270aSSushmita Susheelendra 185a6ae74c9SRob Clark msm_gem_lock(obj); 1860e08270aSSushmita Susheelendra 18790643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 188a6ae74c9SRob Clark msm_gem_unlock(obj); 1890e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1900e08270aSSushmita Susheelendra } 1910e08270aSSushmita Susheelendra 19205b84911SRob Clark p = get_pages(obj); 19310f76165SRob Clark 19410f76165SRob Clark if (!IS_ERR(p)) { 19510f76165SRob Clark msm_obj->pin_count++; 19610f76165SRob Clark update_inactive(msm_obj); 19710f76165SRob Clark } 19810f76165SRob Clark 199a6ae74c9SRob Clark msm_gem_unlock(obj); 20005b84911SRob Clark return p; 20105b84911SRob Clark } 20205b84911SRob Clark 20305b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 20405b84911SRob Clark { 20510f76165SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 20610f76165SRob Clark 20710f76165SRob Clark msm_gem_lock(obj); 20810f76165SRob Clark msm_obj->pin_count--; 20910f76165SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 21010f76165SRob Clark update_inactive(msm_obj); 21110f76165SRob Clark msm_gem_unlock(obj); 21205b84911SRob Clark } 21305b84911SRob Clark 214af9b3547SJonathan Marek static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) 215af9b3547SJonathan Marek { 2169ef36443SJonathan Marek if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 217af9b3547SJonathan Marek return pgprot_writecombine(prot); 218af9b3547SJonathan Marek return prot; 219af9b3547SJonathan Marek } 220af9b3547SJonathan Marek 2213c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 222c8afe684SRob Clark { 22311bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 224c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2250e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 226c8afe684SRob Clark struct page **pages; 227c8afe684SRob Clark unsigned long pfn; 228c8afe684SRob Clark pgoff_t pgoff; 229a5f74ec7SSouptick Joarder int err; 230a5f74ec7SSouptick Joarder vm_fault_t ret; 231c8afe684SRob Clark 2320e08270aSSushmita Susheelendra /* 2330e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2340e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 235d78d383aSRob Clark */ 236a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 237a5f74ec7SSouptick Joarder if (err) { 238a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 239c8afe684SRob Clark goto out; 240a5f74ec7SSouptick Joarder } 241c8afe684SRob Clark 24290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 243a6ae74c9SRob Clark msm_gem_unlock(obj); 2440e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2450e08270aSSushmita Susheelendra } 2460e08270aSSushmita Susheelendra 247c8afe684SRob Clark /* make sure we have pages attached now */ 248c8afe684SRob Clark pages = get_pages(obj); 249c8afe684SRob Clark if (IS_ERR(pages)) { 250a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 251c8afe684SRob Clark goto out_unlock; 252c8afe684SRob Clark } 253c8afe684SRob Clark 254c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2551a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 256c8afe684SRob Clark 257871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 258c8afe684SRob Clark 2591a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 260c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 261c8afe684SRob Clark 262a5f74ec7SSouptick Joarder ret = vmf_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 263c8afe684SRob Clark out_unlock: 264a6ae74c9SRob Clark msm_gem_unlock(obj); 265c8afe684SRob Clark out: 266a5f74ec7SSouptick Joarder return ret; 267c8afe684SRob Clark } 268c8afe684SRob Clark 269c8afe684SRob Clark /** get mmap offset */ 270c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 271c8afe684SRob Clark { 272c8afe684SRob Clark struct drm_device *dev = obj->dev; 273c8afe684SRob Clark int ret; 274c8afe684SRob Clark 27590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 276c8afe684SRob Clark 277c8afe684SRob Clark /* Make it mmapable */ 278c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 279c8afe684SRob Clark 280c8afe684SRob Clark if (ret) { 2816a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 282c8afe684SRob Clark return 0; 283c8afe684SRob Clark } 284c8afe684SRob Clark 285c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 286c8afe684SRob Clark } 287c8afe684SRob Clark 288c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 289c8afe684SRob Clark { 290c8afe684SRob Clark uint64_t offset; 2910e08270aSSushmita Susheelendra 292a6ae74c9SRob Clark msm_gem_lock(obj); 293c8afe684SRob Clark offset = mmap_offset(obj); 294a6ae74c9SRob Clark msm_gem_unlock(obj); 295c8afe684SRob Clark return offset; 296c8afe684SRob Clark } 297c8afe684SRob Clark 2984b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 2994b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3004b85f7f5SRob Clark { 3014b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3024b85f7f5SRob Clark struct msm_gem_vma *vma; 3034b85f7f5SRob Clark 30490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3050e08270aSSushmita Susheelendra 3064b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3074b85f7f5SRob Clark if (!vma) 3084b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3094b85f7f5SRob Clark 3104b85f7f5SRob Clark vma->aspace = aspace; 3114b85f7f5SRob Clark 3124b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3134b85f7f5SRob Clark 3144b85f7f5SRob Clark return vma; 3154b85f7f5SRob Clark } 3164b85f7f5SRob Clark 3174b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3184b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3194b85f7f5SRob Clark { 3204b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3214b85f7f5SRob Clark struct msm_gem_vma *vma; 3224b85f7f5SRob Clark 32390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3244b85f7f5SRob Clark 3254b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3264b85f7f5SRob Clark if (vma->aspace == aspace) 3274b85f7f5SRob Clark return vma; 3284b85f7f5SRob Clark } 3294b85f7f5SRob Clark 3304b85f7f5SRob Clark return NULL; 3314b85f7f5SRob Clark } 3324b85f7f5SRob Clark 3334b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3344b85f7f5SRob Clark { 3354b85f7f5SRob Clark if (!vma) 3364b85f7f5SRob Clark return; 3374b85f7f5SRob Clark 3384b85f7f5SRob Clark list_del(&vma->list); 3394b85f7f5SRob Clark kfree(vma); 3404b85f7f5SRob Clark } 3414b85f7f5SRob Clark 34237c68900SLee Jones /* 34320d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 34420d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 34520d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 34620d0ae2fSRob Clark * mapping. 34720d0ae2fSRob Clark */ 3484fe5f65eSRob Clark static void 34920d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3504fe5f65eSRob Clark { 3514fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3529b73bde3SIskren Chernev struct msm_gem_vma *vma; 3534fe5f65eSRob Clark 35490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3554fe5f65eSRob Clark 3569b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 357d67f1b6dSBrian Masney if (vma->aspace) { 3587ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 35920d0ae2fSRob Clark if (close) 3607ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 361d67f1b6dSBrian Masney } 3629b73bde3SIskren Chernev } 3639b73bde3SIskren Chernev } 3649b73bde3SIskren Chernev 3659b73bde3SIskren Chernev /* Called with msm_obj locked */ 3669b73bde3SIskren Chernev static void 3679b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3684fe5f65eSRob Clark { 3694fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3704fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3714fe5f65eSRob Clark 37290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3734fe5f65eSRob Clark 3744fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3754b85f7f5SRob Clark del_vma(vma); 3764fe5f65eSRob Clark } 3774fe5f65eSRob Clark } 3784fe5f65eSRob Clark 3798117e5e5SRob Clark static int get_iova_locked(struct drm_gem_object *obj, 380d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 381d3b8877eSJonathan Marek u64 range_start, u64 range_end) 382c8afe684SRob Clark { 3834b85f7f5SRob Clark struct msm_gem_vma *vma; 384c8afe684SRob Clark int ret = 0; 385c8afe684SRob Clark 38690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 387cb1e3818SRob Clark 3884b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 389871d812aSRob Clark 3904b85f7f5SRob Clark if (!vma) { 3914b85f7f5SRob Clark vma = add_vma(obj, aspace); 392c0ee9794SJordan Crouse if (IS_ERR(vma)) 393c0ee9794SJordan Crouse return PTR_ERR(vma); 3944b85f7f5SRob Clark 395d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 396d3b8877eSJonathan Marek range_start, range_end); 397c0ee9794SJordan Crouse if (ret) { 398c0ee9794SJordan Crouse del_vma(vma); 399c0ee9794SJordan Crouse return ret; 400c8afe684SRob Clark } 4014b85f7f5SRob Clark } 4024b85f7f5SRob Clark 4034b85f7f5SRob Clark *iova = vma->iova; 4044b85f7f5SRob Clark return 0; 405c0ee9794SJordan Crouse } 4064b85f7f5SRob Clark 407c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 408c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 409c0ee9794SJordan Crouse { 410c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 411c0ee9794SJordan Crouse struct msm_gem_vma *vma; 412c0ee9794SJordan Crouse struct page **pages; 41364fcbde7SRob Clark int ret, prot = IOMMU_READ; 414bbc2cd07SRob Clark 415bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 416bbc2cd07SRob Clark prot |= IOMMU_WRITE; 417c0ee9794SJordan Crouse 4180b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4190b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4200b462d7aSJonathan Marek 421d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 422d12e3390SJonathan Marek prot |= IOMMU_CACHE; 423d12e3390SJonathan Marek 42490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 425c0ee9794SJordan Crouse 42690643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 427c0ee9794SJordan Crouse return -EBUSY; 428c0ee9794SJordan Crouse 429c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 43090643a24SRob Clark if (GEM_WARN_ON(!vma)) 431c0ee9794SJordan Crouse return -EINVAL; 432c0ee9794SJordan Crouse 433c0ee9794SJordan Crouse pages = get_pages(obj); 434c0ee9794SJordan Crouse if (IS_ERR(pages)) 435c0ee9794SJordan Crouse return PTR_ERR(pages); 436c0ee9794SJordan Crouse 43764fcbde7SRob Clark ret = msm_gem_map_vma(aspace, vma, prot, 438bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 43964fcbde7SRob Clark 44064fcbde7SRob Clark if (!ret) 44164fcbde7SRob Clark msm_obj->pin_count++; 44264fcbde7SRob Clark 44364fcbde7SRob Clark return ret; 444c0ee9794SJordan Crouse } 445c0ee9794SJordan Crouse 446e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 447d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 448d3b8877eSJonathan Marek u64 range_start, u64 range_end) 449c0ee9794SJordan Crouse { 450c0ee9794SJordan Crouse u64 local; 451c0ee9794SJordan Crouse int ret; 452c0ee9794SJordan Crouse 45390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 454c0ee9794SJordan Crouse 4558117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 456d3b8877eSJonathan Marek range_start, range_end); 457c0ee9794SJordan Crouse 458c0ee9794SJordan Crouse if (!ret) 459c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 460c0ee9794SJordan Crouse 461c0ee9794SJordan Crouse if (!ret) 462c0ee9794SJordan Crouse *iova = local; 463c0ee9794SJordan Crouse 464c8afe684SRob Clark return ret; 465c8afe684SRob Clark } 466c8afe684SRob Clark 467e4b87d22SRob Clark /* 468e4b87d22SRob Clark * get iova and pin it. Should have a matching put 469e4b87d22SRob Clark * limits iova to specified range (in pages) 470e4b87d22SRob Clark */ 471e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 472e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 473e4b87d22SRob Clark u64 range_start, u64 range_end) 474e4b87d22SRob Clark { 475e4b87d22SRob Clark int ret; 476e4b87d22SRob Clark 477e4b87d22SRob Clark msm_gem_lock(obj); 478e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 479e4b87d22SRob Clark msm_gem_unlock(obj); 480e4b87d22SRob Clark 481e4b87d22SRob Clark return ret; 482e4b87d22SRob Clark } 483e4b87d22SRob Clark 484e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 485e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 486e4b87d22SRob Clark { 487e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 488e4b87d22SRob Clark } 489e4b87d22SRob Clark 490d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 491d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 492d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 493d3b8877eSJonathan Marek { 494d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 495d3b8877eSJonathan Marek } 496d3b8877eSJonathan Marek 4977ad0e8cfSJordan Crouse /* 4987ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 4997ad0e8cfSJordan Crouse * valid for the life of the object 5007ad0e8cfSJordan Crouse */ 5019fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5029fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5039fe041f6SJordan Crouse { 5049fe041f6SJordan Crouse int ret; 5059fe041f6SJordan Crouse 506a6ae74c9SRob Clark msm_gem_lock(obj); 5078117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 508a6ae74c9SRob Clark msm_gem_unlock(obj); 5099fe041f6SJordan Crouse 5109fe041f6SJordan Crouse return ret; 5119fe041f6SJordan Crouse } 5129fe041f6SJordan Crouse 5132638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5149fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5152638d90aSRob Clark */ 5168bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5178bdcd949SRob Clark struct msm_gem_address_space *aspace) 5182638d90aSRob Clark { 5194b85f7f5SRob Clark struct msm_gem_vma *vma; 5204b85f7f5SRob Clark 521a6ae74c9SRob Clark msm_gem_lock(obj); 5224b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 523a6ae74c9SRob Clark msm_gem_unlock(obj); 52490643a24SRob Clark GEM_WARN_ON(!vma); 5254b85f7f5SRob Clark 5264b85f7f5SRob Clark return vma ? vma->iova : 0; 5272638d90aSRob Clark } 5282638d90aSRob Clark 5297ad0e8cfSJordan Crouse /* 530e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 531e4b87d22SRob Clark */ 532e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 533e4b87d22SRob Clark struct msm_gem_address_space *aspace) 534e4b87d22SRob Clark { 53564fcbde7SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 536e4b87d22SRob Clark struct msm_gem_vma *vma; 537e4b87d22SRob Clark 53890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 539e4b87d22SRob Clark 540e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 541e4b87d22SRob Clark 54264fcbde7SRob Clark if (!GEM_WARN_ON(!vma)) { 543e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 54464fcbde7SRob Clark 54564fcbde7SRob Clark msm_obj->pin_count--; 54664fcbde7SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 54764fcbde7SRob Clark 54864fcbde7SRob Clark update_inactive(msm_obj); 54964fcbde7SRob Clark } 550e4b87d22SRob Clark } 551e4b87d22SRob Clark 552e4b87d22SRob Clark /* 5537ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5547ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5557ad0e8cfSJordan Crouse * to get rid of it 5567ad0e8cfSJordan Crouse */ 5577ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5588bdcd949SRob Clark struct msm_gem_address_space *aspace) 559c8afe684SRob Clark { 560a6ae74c9SRob Clark msm_gem_lock(obj); 561e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 562a6ae74c9SRob Clark msm_gem_unlock(obj); 563c8afe684SRob Clark } 564c8afe684SRob Clark 565c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 566c8afe684SRob Clark struct drm_mode_create_dumb *args) 567c8afe684SRob Clark { 568c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 569c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 570c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5710815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 572c8afe684SRob Clark } 573c8afe684SRob Clark 574c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 575c8afe684SRob Clark uint32_t handle, uint64_t *offset) 576c8afe684SRob Clark { 577c8afe684SRob Clark struct drm_gem_object *obj; 578c8afe684SRob Clark int ret = 0; 579c8afe684SRob Clark 580c8afe684SRob Clark /* GEM does all our handle to object mapping */ 581a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 582c8afe684SRob Clark if (obj == NULL) { 583c8afe684SRob Clark ret = -ENOENT; 584c8afe684SRob Clark goto fail; 585c8afe684SRob Clark } 586c8afe684SRob Clark 587c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 588c8afe684SRob Clark 589f7d33950SEmil Velikov drm_gem_object_put(obj); 590c8afe684SRob Clark 591c8afe684SRob Clark fail: 592c8afe684SRob Clark return ret; 593c8afe684SRob Clark } 594c8afe684SRob Clark 595fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 596c8afe684SRob Clark { 5970e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5980e08270aSSushmita Susheelendra int ret = 0; 5990e08270aSSushmita Susheelendra 60090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 601e4b87d22SRob Clark 6028b6b7d84SDaniel Vetter if (obj->import_attach) 6038b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6048b6b7d84SDaniel Vetter 60590643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6066a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 607fad33f4bSRob Clark msm_obj->madv, madv); 6080e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 609c8afe684SRob Clark } 610c8afe684SRob Clark 6110e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 612a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6130e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6140e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 615a6ae74c9SRob Clark * hold msm_obj lock) 6160e08270aSSushmita Susheelendra */ 6170e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6180e08270aSSushmita Susheelendra 6190e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6200e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6210e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6220e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6230e08270aSSushmita Susheelendra goto fail; 6240e08270aSSushmita Susheelendra } 6250e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 626af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6270e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6280e08270aSSushmita Susheelendra ret = -ENOMEM; 6290e08270aSSushmita Susheelendra goto fail; 6300e08270aSSushmita Susheelendra } 63110f76165SRob Clark 63210f76165SRob Clark update_inactive(msm_obj); 6330e08270aSSushmita Susheelendra } 6340e08270aSSushmita Susheelendra 6350e08270aSSushmita Susheelendra return msm_obj->vaddr; 6360e08270aSSushmita Susheelendra 6370e08270aSSushmita Susheelendra fail: 638e1e9db2cSRob Clark msm_obj->vmap_count--; 6390e08270aSSushmita Susheelendra return ERR_PTR(ret); 64018f23049SRob Clark } 64118f23049SRob Clark 642e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 643e4b87d22SRob Clark { 644e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 645e4b87d22SRob Clark } 646e4b87d22SRob Clark 647fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 648fad33f4bSRob Clark { 649e4b87d22SRob Clark void *ret; 650e4b87d22SRob Clark 651e4b87d22SRob Clark msm_gem_lock(obj); 652e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 653e4b87d22SRob Clark msm_gem_unlock(obj); 654e4b87d22SRob Clark 655e4b87d22SRob Clark return ret; 656fad33f4bSRob Clark } 657fad33f4bSRob Clark 658fad33f4bSRob Clark /* 659fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 660fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 661fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 662fad33f4bSRob Clark * active list. 663fad33f4bSRob Clark */ 664fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 665fad33f4bSRob Clark { 666fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 667fad33f4bSRob Clark } 668fad33f4bSRob Clark 669e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 67018f23049SRob Clark { 6710e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6720e08270aSSushmita Susheelendra 67390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 67490643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 675e4b87d22SRob Clark 6760e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6774cd33c48SRob Clark } 6780e08270aSSushmita Susheelendra 6790e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6804cd33c48SRob Clark { 681a6ae74c9SRob Clark msm_gem_lock(obj); 682e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 683a6ae74c9SRob Clark msm_gem_unlock(obj); 6844cd33c48SRob Clark } 6854cd33c48SRob Clark 6864cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6874cd33c48SRob Clark * false or -errno. 6884cd33c48SRob Clark */ 6894cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6904cd33c48SRob Clark { 6914cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69268209390SRob Clark 693a6ae74c9SRob Clark msm_gem_lock(obj); 694c8afe684SRob Clark 695c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 696c8afe684SRob Clark msm_obj->madv = madv; 697c8afe684SRob Clark 6980e08270aSSushmita Susheelendra madv = msm_obj->madv; 6990e08270aSSushmita Susheelendra 7003edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7013edfa30fSRob Clark * between inactive lists 7023edfa30fSRob Clark */ 7033edfa30fSRob Clark if (msm_obj->active_count == 0) 7043edfa30fSRob Clark update_inactive(msm_obj); 7053edfa30fSRob Clark 706a6ae74c9SRob Clark msm_gem_unlock(obj); 7070e08270aSSushmita Susheelendra 7080e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 709c8afe684SRob Clark } 710c8afe684SRob Clark 711599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 71268209390SRob Clark { 71368209390SRob Clark struct drm_device *dev = obj->dev; 71468209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 71568209390SRob Clark 71681d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 71790643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 71868209390SRob Clark 71920d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 72020d0ae2fSRob Clark put_iova_spaces(obj, true); 7210e08270aSSushmita Susheelendra 722599089c6SRob Clark msm_gem_vunmap(obj); 72368209390SRob Clark 72481d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 72581d4d597SRob Clark 72668209390SRob Clark put_pages(obj); 72768209390SRob Clark 7289b73bde3SIskren Chernev put_iova_vmas(obj); 7299b73bde3SIskren Chernev 73068209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 73125ed38b3SRob Clark update_inactive(msm_obj); 73268209390SRob Clark 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 74637c68900SLee Jones /* 74763f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 74863f17ef8SRob Clark */ 74963f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 75063f17ef8SRob Clark { 75163f17ef8SRob Clark struct drm_device *dev = obj->dev; 75263f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 75363f17ef8SRob Clark 75463f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 75563f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 75663f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 75763f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 75863f17ef8SRob Clark 75963f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 76063f17ef8SRob Clark put_iova_spaces(obj, false); 76163f17ef8SRob Clark 76263f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 76363f17ef8SRob Clark 76463f17ef8SRob Clark put_pages(obj); 76563f17ef8SRob Clark 76663f17ef8SRob Clark update_inactive(msm_obj); 76763f17ef8SRob Clark } 76863f17ef8SRob Clark 769599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 770e1e9db2cSRob Clark { 771e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 772e1e9db2cSRob Clark 77390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7740e08270aSSushmita Susheelendra 77590643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 776e1e9db2cSRob Clark return; 777e1e9db2cSRob Clark 778e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 779e1e9db2cSRob Clark msm_obj->vaddr = NULL; 780e1e9db2cSRob Clark } 781e1e9db2cSRob Clark 7829d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7837198e6b0SRob Clark { 7847198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 785d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 786d984457bSRob Clark 787d984457bSRob Clark might_sleep(); 78890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 78990643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 79090643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 7919d8baa2bSAkhil P Oommen 792ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 793d984457bSRob Clark mutex_lock(&priv->mm_lock); 79464fcbde7SRob Clark if (msm_obj->evictable) 79564fcbde7SRob Clark mark_unevictable(msm_obj); 796a83cc4fbSBaokun Li list_move_tail(&msm_obj->mm_list, &gpu->active_list); 797d984457bSRob Clark mutex_unlock(&priv->mm_lock); 7987198e6b0SRob Clark } 7999d8baa2bSAkhil P Oommen } 8007198e6b0SRob Clark 8019d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8027198e6b0SRob Clark { 8037198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8047198e6b0SRob Clark 805d984457bSRob Clark might_sleep(); 80690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8077198e6b0SRob Clark 808ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8093edfa30fSRob Clark update_inactive(msm_obj); 8107198e6b0SRob Clark } 8119d8baa2bSAkhil P Oommen } 8127198e6b0SRob Clark 8133edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8143edfa30fSRob Clark { 8153edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8163edfa30fSRob Clark 81764fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 81864fcbde7SRob Clark 81964fcbde7SRob Clark if (msm_obj->active_count != 0) 82064fcbde7SRob Clark return; 82164fcbde7SRob Clark 8223edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8233edfa30fSRob Clark 824cc8a4d5aSRob Clark if (msm_obj->dontneed) 8250054eeb7SRob Clark mark_unpurgeable(msm_obj); 82664fcbde7SRob Clark if (msm_obj->evictable) 82764fcbde7SRob Clark mark_unevictable(msm_obj); 828cc8a4d5aSRob Clark 829cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 83064fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8313edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 83264fcbde7SRob Clark mark_evictable(msm_obj); 833cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8343edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8350054eeb7SRob Clark mark_purgeable(msm_obj); 836cc8a4d5aSRob Clark } else { 83764fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 83864fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 839cc8a4d5aSRob Clark } 8403edfa30fSRob Clark 8413edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8423edfa30fSRob Clark } 8433edfa30fSRob Clark 844ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 845ba00c3f2SRob Clark { 846b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 847f755e227SChris Wilson unsigned long remain = 848f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 849f755e227SChris Wilson long ret; 850b6295f9aSRob Clark 851d3fae3b3SChristian König ret = dma_resv_wait_timeout(obj->resv, write, true, remain); 852f755e227SChris Wilson if (ret == 0) 853f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 854f755e227SChris Wilson else if (ret < 0) 855f755e227SChris Wilson return ret; 856ba00c3f2SRob Clark 8577198e6b0SRob Clark /* TODO cache maintenance */ 8587198e6b0SRob Clark 859b6295f9aSRob Clark return 0; 8607198e6b0SRob Clark } 8617198e6b0SRob Clark 8627198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8637198e6b0SRob Clark { 8647198e6b0SRob Clark /* TODO cache maintenance */ 865c8afe684SRob Clark return 0; 866c8afe684SRob Clark } 867c8afe684SRob Clark 868c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 869528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 870528107c8SRob Clark struct msm_gem_stats *stats) 871c8afe684SRob Clark { 872c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 87352791eeeSChristian König struct dma_resv *robj = obj->resv; 8744b85f7f5SRob Clark struct msm_gem_vma *vma; 875c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8764cd33c48SRob Clark const char *madv; 877c8afe684SRob Clark 878a6ae74c9SRob Clark msm_gem_lock(obj); 879b6295f9aSRob Clark 880528107c8SRob Clark stats->all.count++; 881528107c8SRob Clark stats->all.size += obj->size; 882528107c8SRob Clark 883528107c8SRob Clark if (is_active(msm_obj)) { 884528107c8SRob Clark stats->active.count++; 885528107c8SRob Clark stats->active.size += obj->size; 886528107c8SRob Clark } 887528107c8SRob Clark 888f48f3563SRob Clark if (msm_obj->pages) { 889f48f3563SRob Clark stats->resident.count++; 890f48f3563SRob Clark stats->resident.size += obj->size; 891f48f3563SRob Clark } 892f48f3563SRob Clark 8934cd33c48SRob Clark switch (msm_obj->madv) { 8944cd33c48SRob Clark case __MSM_MADV_PURGED: 895528107c8SRob Clark stats->purged.count++; 896528107c8SRob Clark stats->purged.size += obj->size; 8974cd33c48SRob Clark madv = " purged"; 8984cd33c48SRob Clark break; 8994cd33c48SRob Clark case MSM_MADV_DONTNEED: 9000054eeb7SRob Clark stats->purgeable.count++; 9010054eeb7SRob Clark stats->purgeable.size += obj->size; 9024cd33c48SRob Clark madv = " purgeable"; 9034cd33c48SRob Clark break; 9044cd33c48SRob Clark case MSM_MADV_WILLNEED: 9054cd33c48SRob Clark default: 9064cd33c48SRob Clark madv = ""; 9074cd33c48SRob Clark break; 9084cd33c48SRob Clark } 9094cd33c48SRob Clark 910575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9117198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9122c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 913667ce33eSRob Clark off, msm_obj->vaddr); 914667ce33eSRob Clark 9150815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 916667ce33eSRob Clark 917575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 918575f0485SJordan Crouse 919575f0485SJordan Crouse seq_puts(m, " vmas:"); 920575f0485SJordan Crouse 92125faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 92225faf2f2SRob Clark const char *name, *comm; 92325faf2f2SRob Clark if (vma->aspace) { 92425faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 92525faf2f2SRob Clark struct task_struct *task = 92625faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 92725faf2f2SRob Clark if (task) { 92825faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 92925faf2f2SRob Clark } else { 93025faf2f2SRob Clark comm = NULL; 93125faf2f2SRob Clark } 93225faf2f2SRob Clark name = aspace->name; 93325faf2f2SRob Clark } else { 93425faf2f2SRob Clark name = comm = NULL; 93525faf2f2SRob Clark } 93625faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 93725faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 93825faf2f2SRob Clark vma->aspace, vma->iova, 93925faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 940*ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 94125faf2f2SRob Clark kfree(comm); 94225faf2f2SRob Clark } 943575f0485SJordan Crouse 944575f0485SJordan Crouse seq_puts(m, "\n"); 945575f0485SJordan Crouse } 946b6295f9aSRob Clark 947f19ee2f3SChristian König dma_resv_describe(robj, m); 948a6ae74c9SRob Clark msm_gem_unlock(obj); 949c8afe684SRob Clark } 950c8afe684SRob Clark 951c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 952c8afe684SRob Clark { 953528107c8SRob Clark struct msm_gem_stats stats = {}; 954c8afe684SRob Clark struct msm_gem_object *msm_obj; 955c8afe684SRob Clark 9560815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9576ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 958c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 959575f0485SJordan Crouse seq_puts(m, " "); 960528107c8SRob Clark msm_gem_describe(obj, m, &stats); 961c8afe684SRob Clark } 962c8afe684SRob Clark 963528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 964528107c8SRob Clark stats.all.count, stats.all.size); 965528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 966528107c8SRob Clark stats.active.count, stats.active.size); 967f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 968f48f3563SRob Clark stats.resident.count, stats.resident.size); 969f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9700054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 971528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 972528107c8SRob Clark stats.purged.count, stats.purged.size); 973c8afe684SRob Clark } 974c8afe684SRob Clark #endif 975c8afe684SRob Clark 976030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 977c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 978c8afe684SRob Clark { 979c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 98048e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 98148e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 98248e7f183SKristian H. Kristensen 9836ed0897cSRob Clark mutex_lock(&priv->obj_lock); 9846ed0897cSRob Clark list_del(&msm_obj->node); 9856ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 9866ed0897cSRob Clark 987d984457bSRob Clark mutex_lock(&priv->mm_lock); 988cc8a4d5aSRob Clark if (msm_obj->dontneed) 9890054eeb7SRob Clark mark_unpurgeable(msm_obj); 990c8afe684SRob Clark list_del(&msm_obj->mm_list); 991d984457bSRob Clark mutex_unlock(&priv->mm_lock); 992c8afe684SRob Clark 993a6ae74c9SRob Clark msm_gem_lock(obj); 994c8afe684SRob Clark 995c8afe684SRob Clark /* object should not be on active list: */ 99690643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 997c8afe684SRob Clark 99820d0ae2fSRob Clark put_iova_spaces(obj, true); 999c8afe684SRob Clark 100005b84911SRob Clark if (obj->import_attach) { 100190643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 100205b84911SRob Clark 100305b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 100405b84911SRob Clark * ours, just free the array we allocated: 100505b84911SRob Clark */ 10062098105eSMichal Hocko kvfree(msm_obj->pages); 100705b84911SRob Clark 100857f04815SRob Clark put_iova_vmas(obj); 100957f04815SRob Clark 10106c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 10116c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 10126c0e3ea2SRob Clark */ 10136c0e3ea2SRob Clark msm_gem_unlock(obj); 10146c0e3ea2SRob Clark 1015f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 101605b84911SRob Clark } else { 1017599089c6SRob Clark msm_gem_vunmap(obj); 1018c8afe684SRob Clark put_pages(obj); 101957f04815SRob Clark put_iova_vmas(obj); 10206c0e3ea2SRob Clark msm_gem_unlock(obj); 102105b84911SRob Clark } 1022c8afe684SRob Clark 1023c8afe684SRob Clark drm_gem_object_release(obj); 1024c8afe684SRob Clark 1025c8afe684SRob Clark kfree(msm_obj); 1026c8afe684SRob Clark } 1027c8afe684SRob Clark 1028510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1029510410bfSThomas Zimmermann { 1030510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1031510410bfSThomas Zimmermann 10323466d9e2SDouglas Anderson vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; 1033510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1034510410bfSThomas Zimmermann 1035510410bfSThomas Zimmermann return 0; 1036510410bfSThomas Zimmermann } 1037510410bfSThomas Zimmermann 1038c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1039c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10400815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10410815d774SJordan Crouse char *name) 1042c8afe684SRob Clark { 1043c8afe684SRob Clark struct drm_gem_object *obj; 1044c8afe684SRob Clark int ret; 1045c8afe684SRob Clark 1046c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1047c8afe684SRob Clark 1048c8afe684SRob Clark if (IS_ERR(obj)) 1049c8afe684SRob Clark return PTR_ERR(obj); 1050c8afe684SRob Clark 10510815d774SJordan Crouse if (name) 10520815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10530815d774SJordan Crouse 1054c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1055c8afe684SRob Clark 1056c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1057f7d33950SEmil Velikov drm_gem_object_put(obj); 1058c8afe684SRob Clark 1059c8afe684SRob Clark return ret; 1060c8afe684SRob Clark } 1061c8afe684SRob Clark 10623c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10633c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10643c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10653c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10663c9edd9cSThomas Zimmermann }; 10673c9edd9cSThomas Zimmermann 10683c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10693c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10703c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10713c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10723c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10733c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10743c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1075510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 10763c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10773c9edd9cSThomas Zimmermann }; 10783c9edd9cSThomas Zimmermann 107905b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 108005b84911SRob Clark uint32_t size, uint32_t flags, 10813cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1082c8afe684SRob Clark { 1083d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1084c8afe684SRob Clark struct msm_gem_object *msm_obj; 1085c8afe684SRob Clark 1086c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1087c8afe684SRob Clark case MSM_BO_UNCACHED: 1088c8afe684SRob Clark case MSM_BO_CACHED: 1089c8afe684SRob Clark case MSM_BO_WC: 1090c8afe684SRob Clark break; 1091d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1092d12e3390SJonathan Marek if (priv->has_cached_coherent) 1093d12e3390SJonathan Marek break; 1094e181ad43SGustavo A. R. Silva fallthrough; 1095c8afe684SRob Clark default: 10962d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1097c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 109805b84911SRob Clark return -EINVAL; 1099c8afe684SRob Clark } 1100c8afe684SRob Clark 1101667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 110205b84911SRob Clark if (!msm_obj) 110305b84911SRob Clark return -ENOMEM; 1104c8afe684SRob Clark 1105c8afe684SRob Clark msm_obj->flags = flags; 11064cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1107c8afe684SRob Clark 1108027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11094b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11104b85f7f5SRob Clark 111105b84911SRob Clark *obj = &msm_obj->base; 11123c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 111305b84911SRob Clark 111405b84911SRob Clark return 0; 111505b84911SRob Clark } 111605b84911SRob Clark 1117030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 111805b84911SRob Clark { 1119f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11203cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1121871d812aSRob Clark struct drm_gem_object *obj = NULL; 1122f4839bd5SRob Clark bool use_vram = false; 112305b84911SRob Clark int ret; 112405b84911SRob Clark 112505b84911SRob Clark size = PAGE_ALIGN(size); 112605b84911SRob Clark 1127c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1128f4839bd5SRob Clark use_vram = true; 112986f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1130f4839bd5SRob Clark use_vram = true; 1131f4839bd5SRob Clark 113290643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1133f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1134f4839bd5SRob Clark 11351a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11361a5dff5dSJordan Crouse * infrastructure grumpy 11371a5dff5dSJordan Crouse */ 11381a5dff5dSJordan Crouse if (size == 0) 11391a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11401a5dff5dSJordan Crouse 11413cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 114205b84911SRob Clark if (ret) 11432203bd0eSDan Carpenter return ERR_PTR(ret); 114405b84911SRob Clark 11453cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11463cbdc8d8SAkhil P Oommen 1147f4839bd5SRob Clark if (use_vram) { 11484b85f7f5SRob Clark struct msm_gem_vma *vma; 1149f4839bd5SRob Clark struct page **pages; 1150b3949a9aSHans Verkuil 1151a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1152a694ffedSIskren Chernev 1153a6ae74c9SRob Clark msm_gem_lock(obj); 1154f4839bd5SRob Clark 11554b85f7f5SRob Clark vma = add_vma(obj, NULL); 1156a6ae74c9SRob Clark msm_gem_unlock(obj); 11574b85f7f5SRob Clark if (IS_ERR(vma)) { 11584b85f7f5SRob Clark ret = PTR_ERR(vma); 11594b85f7f5SRob Clark goto fail; 11604b85f7f5SRob Clark } 11614b85f7f5SRob Clark 11624b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11634b85f7f5SRob Clark 116445f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 116545f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 116645f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 116745f56690SAlexey Minnekhanov * mm_list to be empty. 116845f56690SAlexey Minnekhanov */ 116945f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 117045f56690SAlexey Minnekhanov 117107fcad0dSIskren Chernev msm_gem_lock(obj); 1172f4839bd5SRob Clark pages = get_pages(obj); 117307fcad0dSIskren Chernev msm_gem_unlock(obj); 1174f4839bd5SRob Clark if (IS_ERR(pages)) { 1175f4839bd5SRob Clark ret = PTR_ERR(pages); 1176f4839bd5SRob Clark goto fail; 1177f4839bd5SRob Clark } 11784b85f7f5SRob Clark 11794b85f7f5SRob Clark vma->iova = physaddr(obj); 1180f4839bd5SRob Clark } else { 118105b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 118205b84911SRob Clark if (ret) 118305b84911SRob Clark goto fail; 11840abdba47SLucas Stach /* 11850abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11860abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11870abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11880abdba47SLucas Stach * expected if you're going to pin these pages. 11890abdba47SLucas Stach */ 11900abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1191871d812aSRob Clark } 119205b84911SRob Clark 1193d984457bSRob Clark mutex_lock(&priv->mm_lock); 119464fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1195d984457bSRob Clark mutex_unlock(&priv->mm_lock); 11963cbdc8d8SAkhil P Oommen 11976ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11986ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11996ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12006ed0897cSRob Clark 120105b84911SRob Clark return obj; 120205b84911SRob Clark 120305b84911SRob Clark fail: 1204f7d33950SEmil Velikov drm_gem_object_put(obj); 120505b84911SRob Clark return ERR_PTR(ret); 120605b84911SRob Clark } 120705b84911SRob Clark 120805b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 120979f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 121005b84911SRob Clark { 12113cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 121205b84911SRob Clark struct msm_gem_object *msm_obj; 121305b84911SRob Clark struct drm_gem_object *obj; 121479f0e202SRob Clark uint32_t size; 121505b84911SRob Clark int ret, npages; 121605b84911SRob Clark 1217871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1218c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12196a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1220871d812aSRob Clark return ERR_PTR(-EINVAL); 1221871d812aSRob Clark } 1222871d812aSRob Clark 122379f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 122405b84911SRob Clark 12253cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 122605b84911SRob Clark if (ret) 12272203bd0eSDan Carpenter return ERR_PTR(ret); 122805b84911SRob Clark 122905b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 123005b84911SRob Clark 123105b84911SRob Clark npages = size / PAGE_SIZE; 123205b84911SRob Clark 123305b84911SRob Clark msm_obj = to_msm_bo(obj); 1234a6ae74c9SRob Clark msm_gem_lock(obj); 123505b84911SRob Clark msm_obj->sgt = sgt; 12362098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 123705b84911SRob Clark if (!msm_obj->pages) { 1238a6ae74c9SRob Clark msm_gem_unlock(obj); 123905b84911SRob Clark ret = -ENOMEM; 124005b84911SRob Clark goto fail; 124105b84911SRob Clark } 124205b84911SRob Clark 1243c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12440e08270aSSushmita Susheelendra if (ret) { 1245a6ae74c9SRob Clark msm_gem_unlock(obj); 124605b84911SRob Clark goto fail; 12470e08270aSSushmita Susheelendra } 124805b84911SRob Clark 1249a6ae74c9SRob Clark msm_gem_unlock(obj); 12503cbdc8d8SAkhil P Oommen 1251d984457bSRob Clark mutex_lock(&priv->mm_lock); 125264fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1253d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12543cbdc8d8SAkhil P Oommen 12556ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12566ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12576ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12586ed0897cSRob Clark 1259c8afe684SRob Clark return obj; 1260c8afe684SRob Clark 1261c8afe684SRob Clark fail: 1262f7d33950SEmil Velikov drm_gem_object_put(obj); 1263c8afe684SRob Clark return ERR_PTR(ret); 1264c8afe684SRob Clark } 12658223286dSJordan Crouse 1266030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12678223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1268030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12698223286dSJordan Crouse { 12708223286dSJordan Crouse void *vaddr; 1271030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12728223286dSJordan Crouse int ret; 12738223286dSJordan Crouse 12748223286dSJordan Crouse if (IS_ERR(obj)) 12758223286dSJordan Crouse return ERR_CAST(obj); 12768223286dSJordan Crouse 12778223286dSJordan Crouse if (iova) { 12789fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 127993f7abf1SJordan Crouse if (ret) 128093f7abf1SJordan Crouse goto err; 12818223286dSJordan Crouse } 12828223286dSJordan Crouse 12838223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1284c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12857ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 128693f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 128793f7abf1SJordan Crouse goto err; 12888223286dSJordan Crouse } 12898223286dSJordan Crouse 12908223286dSJordan Crouse if (bo) 12918223286dSJordan Crouse *bo = obj; 12928223286dSJordan Crouse 12938223286dSJordan Crouse return vaddr; 129493f7abf1SJordan Crouse err: 1295f7d33950SEmil Velikov drm_gem_object_put(obj); 129693f7abf1SJordan Crouse 129793f7abf1SJordan Crouse return ERR_PTR(ret); 129893f7abf1SJordan Crouse 12998223286dSJordan Crouse } 13008223286dSJordan Crouse 13011e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1302030af2b0SRob Clark struct msm_gem_address_space *aspace) 13031e29dff0SJordan Crouse { 13041e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13051e29dff0SJordan Crouse return; 13061e29dff0SJordan Crouse 13071e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13087ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1309f7d33950SEmil Velikov drm_gem_object_put(bo); 13101e29dff0SJordan Crouse } 13110815d774SJordan Crouse 13120815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13130815d774SJordan Crouse { 13140815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13150815d774SJordan Crouse va_list ap; 13160815d774SJordan Crouse 13170815d774SJordan Crouse if (!fmt) 13180815d774SJordan Crouse return; 13190815d774SJordan Crouse 13200815d774SJordan Crouse va_start(ap, fmt); 13210815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13220815d774SJordan Crouse va_end(ap); 13230815d774SJordan Crouse } 1324