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 395*2ee4b5d2SRob Clark ret = msm_gem_init_vma(aspace, vma, obj->size, 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 437*2ee4b5d2SRob Clark ret = msm_gem_map_vma(aspace, vma, prot, msm_obj->sgt, obj->size); 43864fcbde7SRob Clark 43964fcbde7SRob Clark if (!ret) 44064fcbde7SRob Clark msm_obj->pin_count++; 44164fcbde7SRob Clark 44264fcbde7SRob Clark return ret; 443c0ee9794SJordan Crouse } 444c0ee9794SJordan Crouse 445e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 446d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 447d3b8877eSJonathan Marek u64 range_start, u64 range_end) 448c0ee9794SJordan Crouse { 449c0ee9794SJordan Crouse u64 local; 450c0ee9794SJordan Crouse int ret; 451c0ee9794SJordan Crouse 45290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 453c0ee9794SJordan Crouse 4548117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 455d3b8877eSJonathan Marek range_start, range_end); 456c0ee9794SJordan Crouse 457c0ee9794SJordan Crouse if (!ret) 458c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 459c0ee9794SJordan Crouse 460c0ee9794SJordan Crouse if (!ret) 461c0ee9794SJordan Crouse *iova = local; 462c0ee9794SJordan Crouse 463c8afe684SRob Clark return ret; 464c8afe684SRob Clark } 465c8afe684SRob Clark 466e4b87d22SRob Clark /* 467e4b87d22SRob Clark * get iova and pin it. Should have a matching put 468e4b87d22SRob Clark * limits iova to specified range (in pages) 469e4b87d22SRob Clark */ 470e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 471e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 472e4b87d22SRob Clark u64 range_start, u64 range_end) 473e4b87d22SRob Clark { 474e4b87d22SRob Clark int ret; 475e4b87d22SRob Clark 476e4b87d22SRob Clark msm_gem_lock(obj); 477e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 478e4b87d22SRob Clark msm_gem_unlock(obj); 479e4b87d22SRob Clark 480e4b87d22SRob Clark return ret; 481e4b87d22SRob Clark } 482e4b87d22SRob Clark 483e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 484e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 485e4b87d22SRob Clark { 486e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 487e4b87d22SRob Clark } 488e4b87d22SRob Clark 489d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 490d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 491d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 492d3b8877eSJonathan Marek { 493d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 494d3b8877eSJonathan Marek } 495d3b8877eSJonathan Marek 4967ad0e8cfSJordan Crouse /* 4977ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 4987ad0e8cfSJordan Crouse * valid for the life of the object 4997ad0e8cfSJordan Crouse */ 5009fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5019fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5029fe041f6SJordan Crouse { 5039fe041f6SJordan Crouse int ret; 5049fe041f6SJordan Crouse 505a6ae74c9SRob Clark msm_gem_lock(obj); 5068117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 507a6ae74c9SRob Clark msm_gem_unlock(obj); 5089fe041f6SJordan Crouse 5099fe041f6SJordan Crouse return ret; 5109fe041f6SJordan Crouse } 5119fe041f6SJordan Crouse 5122638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5139fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5142638d90aSRob Clark */ 5158bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5168bdcd949SRob Clark struct msm_gem_address_space *aspace) 5172638d90aSRob Clark { 5184b85f7f5SRob Clark struct msm_gem_vma *vma; 5194b85f7f5SRob Clark 520a6ae74c9SRob Clark msm_gem_lock(obj); 5214b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 522a6ae74c9SRob Clark msm_gem_unlock(obj); 52390643a24SRob Clark GEM_WARN_ON(!vma); 5244b85f7f5SRob Clark 5254b85f7f5SRob Clark return vma ? vma->iova : 0; 5262638d90aSRob Clark } 5272638d90aSRob Clark 5287ad0e8cfSJordan Crouse /* 529e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 530e4b87d22SRob Clark */ 531e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 532e4b87d22SRob Clark struct msm_gem_address_space *aspace) 533e4b87d22SRob Clark { 53464fcbde7SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 535e4b87d22SRob Clark struct msm_gem_vma *vma; 536e4b87d22SRob Clark 53790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 538e4b87d22SRob Clark 539e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 540e4b87d22SRob Clark 54164fcbde7SRob Clark if (!GEM_WARN_ON(!vma)) { 542e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 54364fcbde7SRob Clark 54464fcbde7SRob Clark msm_obj->pin_count--; 54564fcbde7SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 54664fcbde7SRob Clark 54764fcbde7SRob Clark update_inactive(msm_obj); 54864fcbde7SRob Clark } 549e4b87d22SRob Clark } 550e4b87d22SRob Clark 551e4b87d22SRob Clark /* 5527ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5537ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5547ad0e8cfSJordan Crouse * to get rid of it 5557ad0e8cfSJordan Crouse */ 5567ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5578bdcd949SRob Clark struct msm_gem_address_space *aspace) 558c8afe684SRob Clark { 559a6ae74c9SRob Clark msm_gem_lock(obj); 560e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 561a6ae74c9SRob Clark msm_gem_unlock(obj); 562c8afe684SRob Clark } 563c8afe684SRob Clark 564c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 565c8afe684SRob Clark struct drm_mode_create_dumb *args) 566c8afe684SRob Clark { 567c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 568c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 569c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5700815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 571c8afe684SRob Clark } 572c8afe684SRob Clark 573c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 574c8afe684SRob Clark uint32_t handle, uint64_t *offset) 575c8afe684SRob Clark { 576c8afe684SRob Clark struct drm_gem_object *obj; 577c8afe684SRob Clark int ret = 0; 578c8afe684SRob Clark 579c8afe684SRob Clark /* GEM does all our handle to object mapping */ 580a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 581c8afe684SRob Clark if (obj == NULL) { 582c8afe684SRob Clark ret = -ENOENT; 583c8afe684SRob Clark goto fail; 584c8afe684SRob Clark } 585c8afe684SRob Clark 586c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 587c8afe684SRob Clark 588f7d33950SEmil Velikov drm_gem_object_put(obj); 589c8afe684SRob Clark 590c8afe684SRob Clark fail: 591c8afe684SRob Clark return ret; 592c8afe684SRob Clark } 593c8afe684SRob Clark 594fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 595c8afe684SRob Clark { 5960e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5970e08270aSSushmita Susheelendra int ret = 0; 5980e08270aSSushmita Susheelendra 59990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 600e4b87d22SRob Clark 6018b6b7d84SDaniel Vetter if (obj->import_attach) 6028b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6038b6b7d84SDaniel Vetter 60490643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6056a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 606fad33f4bSRob Clark msm_obj->madv, madv); 6070e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 608c8afe684SRob Clark } 609c8afe684SRob Clark 6100e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 611a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6120e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6130e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 614a6ae74c9SRob Clark * hold msm_obj lock) 6150e08270aSSushmita Susheelendra */ 6160e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6170e08270aSSushmita Susheelendra 6180e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6190e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6200e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6210e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6220e08270aSSushmita Susheelendra goto fail; 6230e08270aSSushmita Susheelendra } 6240e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 625af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6260e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6270e08270aSSushmita Susheelendra ret = -ENOMEM; 6280e08270aSSushmita Susheelendra goto fail; 6290e08270aSSushmita Susheelendra } 63010f76165SRob Clark 63110f76165SRob Clark update_inactive(msm_obj); 6320e08270aSSushmita Susheelendra } 6330e08270aSSushmita Susheelendra 6340e08270aSSushmita Susheelendra return msm_obj->vaddr; 6350e08270aSSushmita Susheelendra 6360e08270aSSushmita Susheelendra fail: 637e1e9db2cSRob Clark msm_obj->vmap_count--; 6380e08270aSSushmita Susheelendra return ERR_PTR(ret); 63918f23049SRob Clark } 64018f23049SRob Clark 641e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 642e4b87d22SRob Clark { 643e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 644e4b87d22SRob Clark } 645e4b87d22SRob Clark 646fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 647fad33f4bSRob Clark { 648e4b87d22SRob Clark void *ret; 649e4b87d22SRob Clark 650e4b87d22SRob Clark msm_gem_lock(obj); 651e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 652e4b87d22SRob Clark msm_gem_unlock(obj); 653e4b87d22SRob Clark 654e4b87d22SRob Clark return ret; 655fad33f4bSRob Clark } 656fad33f4bSRob Clark 657fad33f4bSRob Clark /* 658fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 659fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 660fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 661fad33f4bSRob Clark * active list. 662fad33f4bSRob Clark */ 663fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 664fad33f4bSRob Clark { 665fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 666fad33f4bSRob Clark } 667fad33f4bSRob Clark 668e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 66918f23049SRob Clark { 6700e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6710e08270aSSushmita Susheelendra 67290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 67390643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 674e4b87d22SRob Clark 6750e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6764cd33c48SRob Clark } 6770e08270aSSushmita Susheelendra 6780e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6794cd33c48SRob Clark { 680a6ae74c9SRob Clark msm_gem_lock(obj); 681e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 682a6ae74c9SRob Clark msm_gem_unlock(obj); 6834cd33c48SRob Clark } 6844cd33c48SRob Clark 6854cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6864cd33c48SRob Clark * false or -errno. 6874cd33c48SRob Clark */ 6884cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6894cd33c48SRob Clark { 6904cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69168209390SRob Clark 692a6ae74c9SRob Clark msm_gem_lock(obj); 693c8afe684SRob Clark 694c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 695c8afe684SRob Clark msm_obj->madv = madv; 696c8afe684SRob Clark 6970e08270aSSushmita Susheelendra madv = msm_obj->madv; 6980e08270aSSushmita Susheelendra 6993edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7003edfa30fSRob Clark * between inactive lists 7013edfa30fSRob Clark */ 7023edfa30fSRob Clark if (msm_obj->active_count == 0) 7033edfa30fSRob Clark update_inactive(msm_obj); 7043edfa30fSRob Clark 705a6ae74c9SRob Clark msm_gem_unlock(obj); 7060e08270aSSushmita Susheelendra 7070e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 708c8afe684SRob Clark } 709c8afe684SRob Clark 710599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 71168209390SRob Clark { 71268209390SRob Clark struct drm_device *dev = obj->dev; 71368209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 71468209390SRob Clark 71581d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 71690643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 71768209390SRob Clark 71820d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 71920d0ae2fSRob Clark put_iova_spaces(obj, true); 7200e08270aSSushmita Susheelendra 721599089c6SRob Clark msm_gem_vunmap(obj); 72268209390SRob Clark 72381d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 72481d4d597SRob 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_gem_free_mmap_offset(obj); 73368209390SRob Clark 73468209390SRob Clark /* Our goal here is to return as much of the memory as 73568209390SRob Clark * is possible back to the system as we are called from OOM. 73668209390SRob Clark * To do this we must instruct the shmfs to drop all of its 73768209390SRob Clark * backing pages, *now*. 73868209390SRob Clark */ 73968209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 74068209390SRob Clark 74168209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 74268209390SRob Clark 0, (loff_t)-1); 74368209390SRob Clark } 74468209390SRob Clark 74537c68900SLee Jones /* 74663f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 74763f17ef8SRob Clark */ 74863f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 74963f17ef8SRob Clark { 75063f17ef8SRob Clark struct drm_device *dev = obj->dev; 75163f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 75263f17ef8SRob Clark 75363f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 75463f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 75563f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 75663f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 75763f17ef8SRob Clark 75863f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 75963f17ef8SRob Clark put_iova_spaces(obj, false); 76063f17ef8SRob Clark 76163f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 76263f17ef8SRob Clark 76363f17ef8SRob Clark put_pages(obj); 76463f17ef8SRob Clark 76563f17ef8SRob Clark update_inactive(msm_obj); 76663f17ef8SRob Clark } 76763f17ef8SRob Clark 768599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 769e1e9db2cSRob Clark { 770e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 771e1e9db2cSRob Clark 77290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7730e08270aSSushmita Susheelendra 77490643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 775e1e9db2cSRob Clark return; 776e1e9db2cSRob Clark 777e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 778e1e9db2cSRob Clark msm_obj->vaddr = NULL; 779e1e9db2cSRob Clark } 780e1e9db2cSRob Clark 7819d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7827198e6b0SRob Clark { 7837198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 784d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 785d984457bSRob Clark 786d984457bSRob Clark might_sleep(); 78790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 78890643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 78990643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 7909d8baa2bSAkhil P Oommen 791ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 792d984457bSRob Clark mutex_lock(&priv->mm_lock); 79364fcbde7SRob Clark if (msm_obj->evictable) 79464fcbde7SRob Clark mark_unevictable(msm_obj); 795a83cc4fbSBaokun Li list_move_tail(&msm_obj->mm_list, &gpu->active_list); 796d984457bSRob Clark mutex_unlock(&priv->mm_lock); 7977198e6b0SRob Clark } 7989d8baa2bSAkhil P Oommen } 7997198e6b0SRob Clark 8009d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8017198e6b0SRob Clark { 8027198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8037198e6b0SRob Clark 804d984457bSRob Clark might_sleep(); 80590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8067198e6b0SRob Clark 807ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8083edfa30fSRob Clark update_inactive(msm_obj); 8097198e6b0SRob Clark } 8109d8baa2bSAkhil P Oommen } 8117198e6b0SRob Clark 8123edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8133edfa30fSRob Clark { 8143edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8153edfa30fSRob Clark 81664fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 81764fcbde7SRob Clark 81864fcbde7SRob Clark if (msm_obj->active_count != 0) 81964fcbde7SRob Clark return; 82064fcbde7SRob Clark 8213edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8223edfa30fSRob Clark 823cc8a4d5aSRob Clark if (msm_obj->dontneed) 8240054eeb7SRob Clark mark_unpurgeable(msm_obj); 82564fcbde7SRob Clark if (msm_obj->evictable) 82664fcbde7SRob Clark mark_unevictable(msm_obj); 827cc8a4d5aSRob Clark 828cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 82964fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8303edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 83164fcbde7SRob Clark mark_evictable(msm_obj); 832cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8333edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8340054eeb7SRob Clark mark_purgeable(msm_obj); 835cc8a4d5aSRob Clark } else { 83664fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 83764fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 838cc8a4d5aSRob Clark } 8393edfa30fSRob Clark 8403edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8413edfa30fSRob Clark } 8423edfa30fSRob Clark 843ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 844ba00c3f2SRob Clark { 845b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 846f755e227SChris Wilson unsigned long remain = 847f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 848f755e227SChris Wilson long ret; 849b6295f9aSRob Clark 850d3fae3b3SChristian König ret = dma_resv_wait_timeout(obj->resv, write, true, remain); 851f755e227SChris Wilson if (ret == 0) 852f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 853f755e227SChris Wilson else if (ret < 0) 854f755e227SChris Wilson return ret; 855ba00c3f2SRob Clark 8567198e6b0SRob Clark /* TODO cache maintenance */ 8577198e6b0SRob Clark 858b6295f9aSRob Clark return 0; 8597198e6b0SRob Clark } 8607198e6b0SRob Clark 8617198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8627198e6b0SRob Clark { 8637198e6b0SRob Clark /* TODO cache maintenance */ 864c8afe684SRob Clark return 0; 865c8afe684SRob Clark } 866c8afe684SRob Clark 867c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 868528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 869528107c8SRob Clark struct msm_gem_stats *stats) 870c8afe684SRob Clark { 871c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 87252791eeeSChristian König struct dma_resv *robj = obj->resv; 8734b85f7f5SRob Clark struct msm_gem_vma *vma; 874c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8754cd33c48SRob Clark const char *madv; 876c8afe684SRob Clark 877a6ae74c9SRob Clark msm_gem_lock(obj); 878b6295f9aSRob Clark 879528107c8SRob Clark stats->all.count++; 880528107c8SRob Clark stats->all.size += obj->size; 881528107c8SRob Clark 882528107c8SRob Clark if (is_active(msm_obj)) { 883528107c8SRob Clark stats->active.count++; 884528107c8SRob Clark stats->active.size += obj->size; 885528107c8SRob Clark } 886528107c8SRob Clark 887f48f3563SRob Clark if (msm_obj->pages) { 888f48f3563SRob Clark stats->resident.count++; 889f48f3563SRob Clark stats->resident.size += obj->size; 890f48f3563SRob Clark } 891f48f3563SRob Clark 8924cd33c48SRob Clark switch (msm_obj->madv) { 8934cd33c48SRob Clark case __MSM_MADV_PURGED: 894528107c8SRob Clark stats->purged.count++; 895528107c8SRob Clark stats->purged.size += obj->size; 8964cd33c48SRob Clark madv = " purged"; 8974cd33c48SRob Clark break; 8984cd33c48SRob Clark case MSM_MADV_DONTNEED: 8990054eeb7SRob Clark stats->purgeable.count++; 9000054eeb7SRob Clark stats->purgeable.size += obj->size; 9014cd33c48SRob Clark madv = " purgeable"; 9024cd33c48SRob Clark break; 9034cd33c48SRob Clark case MSM_MADV_WILLNEED: 9044cd33c48SRob Clark default: 9054cd33c48SRob Clark madv = ""; 9064cd33c48SRob Clark break; 9074cd33c48SRob Clark } 9084cd33c48SRob Clark 909575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9107198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9112c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 912667ce33eSRob Clark off, msm_obj->vaddr); 913667ce33eSRob Clark 9140815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 915667ce33eSRob Clark 916575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 917575f0485SJordan Crouse 918575f0485SJordan Crouse seq_puts(m, " vmas:"); 919575f0485SJordan Crouse 92025faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 92125faf2f2SRob Clark const char *name, *comm; 92225faf2f2SRob Clark if (vma->aspace) { 92325faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 92425faf2f2SRob Clark struct task_struct *task = 92525faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 92625faf2f2SRob Clark if (task) { 92725faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 92825faf2f2SRob Clark } else { 92925faf2f2SRob Clark comm = NULL; 93025faf2f2SRob Clark } 93125faf2f2SRob Clark name = aspace->name; 93225faf2f2SRob Clark } else { 93325faf2f2SRob Clark name = comm = NULL; 93425faf2f2SRob Clark } 93525faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 93625faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 93725faf2f2SRob Clark vma->aspace, vma->iova, 93825faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 939ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 94025faf2f2SRob Clark kfree(comm); 94125faf2f2SRob Clark } 942575f0485SJordan Crouse 943575f0485SJordan Crouse seq_puts(m, "\n"); 944575f0485SJordan Crouse } 945b6295f9aSRob Clark 946f19ee2f3SChristian König dma_resv_describe(robj, m); 947a6ae74c9SRob Clark msm_gem_unlock(obj); 948c8afe684SRob Clark } 949c8afe684SRob Clark 950c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 951c8afe684SRob Clark { 952528107c8SRob Clark struct msm_gem_stats stats = {}; 953c8afe684SRob Clark struct msm_gem_object *msm_obj; 954c8afe684SRob Clark 9550815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9566ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 957c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 958575f0485SJordan Crouse seq_puts(m, " "); 959528107c8SRob Clark msm_gem_describe(obj, m, &stats); 960c8afe684SRob Clark } 961c8afe684SRob Clark 962528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 963528107c8SRob Clark stats.all.count, stats.all.size); 964528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 965528107c8SRob Clark stats.active.count, stats.active.size); 966f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 967f48f3563SRob Clark stats.resident.count, stats.resident.size); 968f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9690054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 970528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 971528107c8SRob Clark stats.purged.count, stats.purged.size); 972c8afe684SRob Clark } 973c8afe684SRob Clark #endif 974c8afe684SRob Clark 975030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 976c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 977c8afe684SRob Clark { 978c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 97948e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 98048e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 98148e7f183SKristian H. Kristensen 9826ed0897cSRob Clark mutex_lock(&priv->obj_lock); 9836ed0897cSRob Clark list_del(&msm_obj->node); 9846ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 9856ed0897cSRob Clark 986d984457bSRob Clark mutex_lock(&priv->mm_lock); 987cc8a4d5aSRob Clark if (msm_obj->dontneed) 9880054eeb7SRob Clark mark_unpurgeable(msm_obj); 989c8afe684SRob Clark list_del(&msm_obj->mm_list); 990d984457bSRob Clark mutex_unlock(&priv->mm_lock); 991c8afe684SRob Clark 992a6ae74c9SRob Clark msm_gem_lock(obj); 993c8afe684SRob Clark 994c8afe684SRob Clark /* object should not be on active list: */ 99590643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 996c8afe684SRob Clark 99720d0ae2fSRob Clark put_iova_spaces(obj, true); 998c8afe684SRob Clark 99905b84911SRob Clark if (obj->import_attach) { 100090643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 100105b84911SRob Clark 100205b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 100305b84911SRob Clark * ours, just free the array we allocated: 100405b84911SRob Clark */ 10052098105eSMichal Hocko kvfree(msm_obj->pages); 100605b84911SRob Clark 100757f04815SRob Clark put_iova_vmas(obj); 100857f04815SRob Clark 10096c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 10106c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 10116c0e3ea2SRob Clark */ 10126c0e3ea2SRob Clark msm_gem_unlock(obj); 10136c0e3ea2SRob Clark 1014f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 101505b84911SRob Clark } else { 1016599089c6SRob Clark msm_gem_vunmap(obj); 1017c8afe684SRob Clark put_pages(obj); 101857f04815SRob Clark put_iova_vmas(obj); 10196c0e3ea2SRob Clark msm_gem_unlock(obj); 102005b84911SRob Clark } 1021c8afe684SRob Clark 1022c8afe684SRob Clark drm_gem_object_release(obj); 1023c8afe684SRob Clark 1024c8afe684SRob Clark kfree(msm_obj); 1025c8afe684SRob Clark } 1026c8afe684SRob Clark 1027510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1028510410bfSThomas Zimmermann { 1029510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1030510410bfSThomas Zimmermann 10313466d9e2SDouglas Anderson vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; 1032510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1033510410bfSThomas Zimmermann 1034510410bfSThomas Zimmermann return 0; 1035510410bfSThomas Zimmermann } 1036510410bfSThomas Zimmermann 1037c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1038c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10390815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10400815d774SJordan Crouse char *name) 1041c8afe684SRob Clark { 1042c8afe684SRob Clark struct drm_gem_object *obj; 1043c8afe684SRob Clark int ret; 1044c8afe684SRob Clark 1045c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1046c8afe684SRob Clark 1047c8afe684SRob Clark if (IS_ERR(obj)) 1048c8afe684SRob Clark return PTR_ERR(obj); 1049c8afe684SRob Clark 10500815d774SJordan Crouse if (name) 10510815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10520815d774SJordan Crouse 1053c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1054c8afe684SRob Clark 1055c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1056f7d33950SEmil Velikov drm_gem_object_put(obj); 1057c8afe684SRob Clark 1058c8afe684SRob Clark return ret; 1059c8afe684SRob Clark } 1060c8afe684SRob Clark 10613c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10623c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10633c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10643c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10653c9edd9cSThomas Zimmermann }; 10663c9edd9cSThomas Zimmermann 10673c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10683c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10693c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10703c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10713c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10723c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10733c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1074510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 10753c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10763c9edd9cSThomas Zimmermann }; 10773c9edd9cSThomas Zimmermann 107805b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 107905b84911SRob Clark uint32_t size, uint32_t flags, 10803cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1081c8afe684SRob Clark { 1082d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1083c8afe684SRob Clark struct msm_gem_object *msm_obj; 1084c8afe684SRob Clark 1085c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1086c8afe684SRob Clark case MSM_BO_UNCACHED: 1087c8afe684SRob Clark case MSM_BO_CACHED: 1088c8afe684SRob Clark case MSM_BO_WC: 1089c8afe684SRob Clark break; 1090d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1091d12e3390SJonathan Marek if (priv->has_cached_coherent) 1092d12e3390SJonathan Marek break; 1093e181ad43SGustavo A. R. Silva fallthrough; 1094c8afe684SRob Clark default: 10952d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1096c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 109705b84911SRob Clark return -EINVAL; 1098c8afe684SRob Clark } 1099c8afe684SRob Clark 1100667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 110105b84911SRob Clark if (!msm_obj) 110205b84911SRob Clark return -ENOMEM; 1103c8afe684SRob Clark 1104c8afe684SRob Clark msm_obj->flags = flags; 11054cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1106c8afe684SRob Clark 1107027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11084b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11094b85f7f5SRob Clark 111005b84911SRob Clark *obj = &msm_obj->base; 11113c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 111205b84911SRob Clark 111305b84911SRob Clark return 0; 111405b84911SRob Clark } 111505b84911SRob Clark 1116030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 111705b84911SRob Clark { 1118f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11193cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1120871d812aSRob Clark struct drm_gem_object *obj = NULL; 1121f4839bd5SRob Clark bool use_vram = false; 112205b84911SRob Clark int ret; 112305b84911SRob Clark 112405b84911SRob Clark size = PAGE_ALIGN(size); 112505b84911SRob Clark 1126c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1127f4839bd5SRob Clark use_vram = true; 112886f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1129f4839bd5SRob Clark use_vram = true; 1130f4839bd5SRob Clark 113190643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1132f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1133f4839bd5SRob Clark 11341a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11351a5dff5dSJordan Crouse * infrastructure grumpy 11361a5dff5dSJordan Crouse */ 11371a5dff5dSJordan Crouse if (size == 0) 11381a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11391a5dff5dSJordan Crouse 11403cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 114105b84911SRob Clark if (ret) 11422203bd0eSDan Carpenter return ERR_PTR(ret); 114305b84911SRob Clark 11443cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11453cbdc8d8SAkhil P Oommen 1146f4839bd5SRob Clark if (use_vram) { 11474b85f7f5SRob Clark struct msm_gem_vma *vma; 1148f4839bd5SRob Clark struct page **pages; 1149b3949a9aSHans Verkuil 1150a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1151a694ffedSIskren Chernev 1152a6ae74c9SRob Clark msm_gem_lock(obj); 1153f4839bd5SRob Clark 11544b85f7f5SRob Clark vma = add_vma(obj, NULL); 1155a6ae74c9SRob Clark msm_gem_unlock(obj); 11564b85f7f5SRob Clark if (IS_ERR(vma)) { 11574b85f7f5SRob Clark ret = PTR_ERR(vma); 11584b85f7f5SRob Clark goto fail; 11594b85f7f5SRob Clark } 11604b85f7f5SRob Clark 11614b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11624b85f7f5SRob Clark 116345f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 116445f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 116545f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 116645f56690SAlexey Minnekhanov * mm_list to be empty. 116745f56690SAlexey Minnekhanov */ 116845f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 116945f56690SAlexey Minnekhanov 117007fcad0dSIskren Chernev msm_gem_lock(obj); 1171f4839bd5SRob Clark pages = get_pages(obj); 117207fcad0dSIskren Chernev msm_gem_unlock(obj); 1173f4839bd5SRob Clark if (IS_ERR(pages)) { 1174f4839bd5SRob Clark ret = PTR_ERR(pages); 1175f4839bd5SRob Clark goto fail; 1176f4839bd5SRob Clark } 11774b85f7f5SRob Clark 11784b85f7f5SRob Clark vma->iova = physaddr(obj); 1179f4839bd5SRob Clark } else { 118005b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 118105b84911SRob Clark if (ret) 118205b84911SRob Clark goto fail; 11830abdba47SLucas Stach /* 11840abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11850abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11860abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11870abdba47SLucas Stach * expected if you're going to pin these pages. 11880abdba47SLucas Stach */ 11890abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1190871d812aSRob Clark } 119105b84911SRob Clark 1192d984457bSRob Clark mutex_lock(&priv->mm_lock); 119364fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1194d984457bSRob Clark mutex_unlock(&priv->mm_lock); 11953cbdc8d8SAkhil P Oommen 11966ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11976ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11986ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11996ed0897cSRob Clark 120005b84911SRob Clark return obj; 120105b84911SRob Clark 120205b84911SRob Clark fail: 1203f7d33950SEmil Velikov drm_gem_object_put(obj); 120405b84911SRob Clark return ERR_PTR(ret); 120505b84911SRob Clark } 120605b84911SRob Clark 120705b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 120879f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 120905b84911SRob Clark { 12103cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 121105b84911SRob Clark struct msm_gem_object *msm_obj; 121205b84911SRob Clark struct drm_gem_object *obj; 121379f0e202SRob Clark uint32_t size; 121405b84911SRob Clark int ret, npages; 121505b84911SRob Clark 1216871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1217c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12186a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1219871d812aSRob Clark return ERR_PTR(-EINVAL); 1220871d812aSRob Clark } 1221871d812aSRob Clark 122279f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 122305b84911SRob Clark 12243cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 122505b84911SRob Clark if (ret) 12262203bd0eSDan Carpenter return ERR_PTR(ret); 122705b84911SRob Clark 122805b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 122905b84911SRob Clark 123005b84911SRob Clark npages = size / PAGE_SIZE; 123105b84911SRob Clark 123205b84911SRob Clark msm_obj = to_msm_bo(obj); 1233a6ae74c9SRob Clark msm_gem_lock(obj); 123405b84911SRob Clark msm_obj->sgt = sgt; 12352098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 123605b84911SRob Clark if (!msm_obj->pages) { 1237a6ae74c9SRob Clark msm_gem_unlock(obj); 123805b84911SRob Clark ret = -ENOMEM; 123905b84911SRob Clark goto fail; 124005b84911SRob Clark } 124105b84911SRob Clark 1242c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12430e08270aSSushmita Susheelendra if (ret) { 1244a6ae74c9SRob Clark msm_gem_unlock(obj); 124505b84911SRob Clark goto fail; 12460e08270aSSushmita Susheelendra } 124705b84911SRob Clark 1248a6ae74c9SRob Clark msm_gem_unlock(obj); 12493cbdc8d8SAkhil P Oommen 1250d984457bSRob Clark mutex_lock(&priv->mm_lock); 125164fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1252d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12533cbdc8d8SAkhil P Oommen 12546ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12556ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12566ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12576ed0897cSRob Clark 1258c8afe684SRob Clark return obj; 1259c8afe684SRob Clark 1260c8afe684SRob Clark fail: 1261f7d33950SEmil Velikov drm_gem_object_put(obj); 1262c8afe684SRob Clark return ERR_PTR(ret); 1263c8afe684SRob Clark } 12648223286dSJordan Crouse 1265030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12668223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1267030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12688223286dSJordan Crouse { 12698223286dSJordan Crouse void *vaddr; 1270030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12718223286dSJordan Crouse int ret; 12728223286dSJordan Crouse 12738223286dSJordan Crouse if (IS_ERR(obj)) 12748223286dSJordan Crouse return ERR_CAST(obj); 12758223286dSJordan Crouse 12768223286dSJordan Crouse if (iova) { 12779fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 127893f7abf1SJordan Crouse if (ret) 127993f7abf1SJordan Crouse goto err; 12808223286dSJordan Crouse } 12818223286dSJordan Crouse 12828223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1283c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12847ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 128593f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 128693f7abf1SJordan Crouse goto err; 12878223286dSJordan Crouse } 12888223286dSJordan Crouse 12898223286dSJordan Crouse if (bo) 12908223286dSJordan Crouse *bo = obj; 12918223286dSJordan Crouse 12928223286dSJordan Crouse return vaddr; 129393f7abf1SJordan Crouse err: 1294f7d33950SEmil Velikov drm_gem_object_put(obj); 129593f7abf1SJordan Crouse 129693f7abf1SJordan Crouse return ERR_PTR(ret); 129793f7abf1SJordan Crouse 12988223286dSJordan Crouse } 12998223286dSJordan Crouse 13001e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1301030af2b0SRob Clark struct msm_gem_address_space *aspace) 13021e29dff0SJordan Crouse { 13031e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13041e29dff0SJordan Crouse return; 13051e29dff0SJordan Crouse 13061e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13077ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1308f7d33950SEmil Velikov drm_gem_object_put(bo); 13091e29dff0SJordan Crouse } 13100815d774SJordan Crouse 13110815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13120815d774SJordan Crouse { 13130815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13140815d774SJordan Crouse va_list ap; 13150815d774SJordan Crouse 13160815d774SJordan Crouse if (!fmt) 13170815d774SJordan Crouse return; 13180815d774SJordan Crouse 13190815d774SJordan Crouse va_start(ap, fmt); 13200815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13210815d774SJordan Crouse va_end(ap); 13220815d774SJordan Crouse } 1323