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 379522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 380522f1abfSRob Clark struct msm_gem_address_space *aspace, 381d3b8877eSJonathan Marek u64 range_start, u64 range_end) 382c8afe684SRob Clark { 3834b85f7f5SRob Clark struct msm_gem_vma *vma; 384c8afe684SRob Clark 38590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 386cb1e3818SRob Clark 3874b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 388871d812aSRob Clark 3894b85f7f5SRob Clark if (!vma) { 390522f1abfSRob Clark int ret; 391522f1abfSRob Clark 3924b85f7f5SRob Clark vma = add_vma(obj, aspace); 393c0ee9794SJordan Crouse if (IS_ERR(vma)) 394522f1abfSRob Clark return vma; 3954b85f7f5SRob Clark 3962ee4b5d2SRob Clark ret = msm_gem_init_vma(aspace, vma, obj->size, 397d3b8877eSJonathan Marek range_start, range_end); 398c0ee9794SJordan Crouse if (ret) { 399c0ee9794SJordan Crouse del_vma(vma); 400522f1abfSRob Clark return ERR_PTR(ret); 401c8afe684SRob Clark } 402522f1abfSRob Clark } else { 403522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 404522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4054b85f7f5SRob Clark } 4064b85f7f5SRob Clark 407522f1abfSRob Clark return vma; 408c0ee9794SJordan Crouse } 4094b85f7f5SRob Clark 410*27674c66SRob Clark int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 411c0ee9794SJordan Crouse { 412c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 413c0ee9794SJordan Crouse struct page **pages; 41464fcbde7SRob Clark int ret, prot = IOMMU_READ; 415bbc2cd07SRob Clark 416bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 417bbc2cd07SRob Clark prot |= IOMMU_WRITE; 418c0ee9794SJordan Crouse 4190b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4200b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4210b462d7aSJonathan Marek 422d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 423d12e3390SJonathan Marek prot |= IOMMU_CACHE; 424d12e3390SJonathan Marek 42590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 426c0ee9794SJordan Crouse 42790643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 428c0ee9794SJordan Crouse return -EBUSY; 429c0ee9794SJordan Crouse 430c0ee9794SJordan Crouse pages = get_pages(obj); 431c0ee9794SJordan Crouse if (IS_ERR(pages)) 432c0ee9794SJordan Crouse return PTR_ERR(pages); 433c0ee9794SJordan Crouse 434522f1abfSRob Clark ret = msm_gem_map_vma(vma->aspace, vma, prot, msm_obj->sgt, obj->size); 43564fcbde7SRob Clark 43664fcbde7SRob Clark if (!ret) 43764fcbde7SRob Clark msm_obj->pin_count++; 43864fcbde7SRob Clark 43964fcbde7SRob Clark return ret; 440c0ee9794SJordan Crouse } 441c0ee9794SJordan Crouse 442*27674c66SRob Clark void msm_gem_unpin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma) 443*27674c66SRob Clark { 444*27674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 445*27674c66SRob Clark 446*27674c66SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 447*27674c66SRob Clark 448*27674c66SRob Clark msm_gem_unmap_vma(vma->aspace, vma); 449*27674c66SRob Clark 450*27674c66SRob Clark msm_obj->pin_count--; 451*27674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 452*27674c66SRob Clark 453*27674c66SRob Clark update_inactive(msm_obj); 454*27674c66SRob Clark } 455*27674c66SRob Clark 456*27674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 457*27674c66SRob Clark struct msm_gem_address_space *aspace) 458*27674c66SRob Clark { 459*27674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 460*27674c66SRob Clark } 461*27674c66SRob Clark 462e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 463d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 464d3b8877eSJonathan Marek u64 range_start, u64 range_end) 465c0ee9794SJordan Crouse { 466522f1abfSRob Clark struct msm_gem_vma *vma; 467c0ee9794SJordan Crouse int ret; 468c0ee9794SJordan Crouse 46990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 470c0ee9794SJordan Crouse 471522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 472522f1abfSRob Clark if (IS_ERR(vma)) 473522f1abfSRob Clark return PTR_ERR(vma); 474c0ee9794SJordan Crouse 475*27674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 476c0ee9794SJordan Crouse if (!ret) 477522f1abfSRob Clark *iova = vma->iova; 478c0ee9794SJordan Crouse 479c8afe684SRob Clark return ret; 480c8afe684SRob Clark } 481c8afe684SRob Clark 482e4b87d22SRob Clark /* 483e4b87d22SRob Clark * get iova and pin it. Should have a matching put 484e4b87d22SRob Clark * limits iova to specified range (in pages) 485e4b87d22SRob Clark */ 486e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 487e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 488e4b87d22SRob Clark u64 range_start, u64 range_end) 489e4b87d22SRob Clark { 490e4b87d22SRob Clark int ret; 491e4b87d22SRob Clark 492e4b87d22SRob Clark msm_gem_lock(obj); 493e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 494e4b87d22SRob Clark msm_gem_unlock(obj); 495e4b87d22SRob Clark 496e4b87d22SRob Clark return ret; 497e4b87d22SRob Clark } 498e4b87d22SRob Clark 499d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 500d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 501d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 502d3b8877eSJonathan Marek { 503d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 504d3b8877eSJonathan Marek } 505d3b8877eSJonathan Marek 5067ad0e8cfSJordan Crouse /* 5077ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5087ad0e8cfSJordan Crouse * valid for the life of the object 5097ad0e8cfSJordan Crouse */ 5109fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5119fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5129fe041f6SJordan Crouse { 513522f1abfSRob Clark struct msm_gem_vma *vma; 514522f1abfSRob Clark int ret = 0; 5159fe041f6SJordan Crouse 516a6ae74c9SRob Clark msm_gem_lock(obj); 517522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 518522f1abfSRob Clark if (IS_ERR(vma)) { 519522f1abfSRob Clark ret = PTR_ERR(vma); 520522f1abfSRob Clark } else { 521522f1abfSRob Clark *iova = vma->iova; 522522f1abfSRob Clark } 523a6ae74c9SRob Clark msm_gem_unlock(obj); 5249fe041f6SJordan Crouse 5259fe041f6SJordan Crouse return ret; 5269fe041f6SJordan Crouse } 5279fe041f6SJordan Crouse 5287ad0e8cfSJordan Crouse /* 5297ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5307ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5317ad0e8cfSJordan Crouse * to get rid of it 5327ad0e8cfSJordan Crouse */ 5337ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5348bdcd949SRob Clark struct msm_gem_address_space *aspace) 535c8afe684SRob Clark { 536*27674c66SRob Clark struct msm_gem_vma *vma; 537*27674c66SRob Clark 538a6ae74c9SRob Clark msm_gem_lock(obj); 539*27674c66SRob Clark vma = lookup_vma(obj, aspace); 540*27674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 541*27674c66SRob Clark msm_gem_unpin_vma_locked(obj, vma); 542*27674c66SRob Clark } 543a6ae74c9SRob Clark msm_gem_unlock(obj); 544c8afe684SRob Clark } 545c8afe684SRob Clark 546c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 547c8afe684SRob Clark struct drm_mode_create_dumb *args) 548c8afe684SRob Clark { 549c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 550c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 551c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5520815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 553c8afe684SRob Clark } 554c8afe684SRob Clark 555c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 556c8afe684SRob Clark uint32_t handle, uint64_t *offset) 557c8afe684SRob Clark { 558c8afe684SRob Clark struct drm_gem_object *obj; 559c8afe684SRob Clark int ret = 0; 560c8afe684SRob Clark 561c8afe684SRob Clark /* GEM does all our handle to object mapping */ 562a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 563c8afe684SRob Clark if (obj == NULL) { 564c8afe684SRob Clark ret = -ENOENT; 565c8afe684SRob Clark goto fail; 566c8afe684SRob Clark } 567c8afe684SRob Clark 568c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 569c8afe684SRob Clark 570f7d33950SEmil Velikov drm_gem_object_put(obj); 571c8afe684SRob Clark 572c8afe684SRob Clark fail: 573c8afe684SRob Clark return ret; 574c8afe684SRob Clark } 575c8afe684SRob Clark 576fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 577c8afe684SRob Clark { 5780e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5790e08270aSSushmita Susheelendra int ret = 0; 5800e08270aSSushmita Susheelendra 58190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 582e4b87d22SRob Clark 5838b6b7d84SDaniel Vetter if (obj->import_attach) 5848b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 5858b6b7d84SDaniel Vetter 58690643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 5876a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 588fad33f4bSRob Clark msm_obj->madv, madv); 5890e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 590c8afe684SRob Clark } 591c8afe684SRob Clark 5920e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 593a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 5940e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 5950e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 596a6ae74c9SRob Clark * hold msm_obj lock) 5970e08270aSSushmita Susheelendra */ 5980e08270aSSushmita Susheelendra msm_obj->vmap_count++; 5990e08270aSSushmita Susheelendra 6000e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6010e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6020e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6030e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6040e08270aSSushmita Susheelendra goto fail; 6050e08270aSSushmita Susheelendra } 6060e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 607af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6080e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6090e08270aSSushmita Susheelendra ret = -ENOMEM; 6100e08270aSSushmita Susheelendra goto fail; 6110e08270aSSushmita Susheelendra } 61210f76165SRob Clark 61310f76165SRob Clark update_inactive(msm_obj); 6140e08270aSSushmita Susheelendra } 6150e08270aSSushmita Susheelendra 6160e08270aSSushmita Susheelendra return msm_obj->vaddr; 6170e08270aSSushmita Susheelendra 6180e08270aSSushmita Susheelendra fail: 619e1e9db2cSRob Clark msm_obj->vmap_count--; 6200e08270aSSushmita Susheelendra return ERR_PTR(ret); 62118f23049SRob Clark } 62218f23049SRob Clark 623e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 624e4b87d22SRob Clark { 625e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 626e4b87d22SRob Clark } 627e4b87d22SRob Clark 628fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 629fad33f4bSRob Clark { 630e4b87d22SRob Clark void *ret; 631e4b87d22SRob Clark 632e4b87d22SRob Clark msm_gem_lock(obj); 633e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 634e4b87d22SRob Clark msm_gem_unlock(obj); 635e4b87d22SRob Clark 636e4b87d22SRob Clark return ret; 637fad33f4bSRob Clark } 638fad33f4bSRob Clark 639fad33f4bSRob Clark /* 640fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 641fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 642fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 643fad33f4bSRob Clark * active list. 644fad33f4bSRob Clark */ 645fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 646fad33f4bSRob Clark { 647fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 648fad33f4bSRob Clark } 649fad33f4bSRob Clark 650e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 65118f23049SRob Clark { 6520e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6530e08270aSSushmita Susheelendra 65490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 65590643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 656e4b87d22SRob Clark 6570e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6584cd33c48SRob Clark } 6590e08270aSSushmita Susheelendra 6600e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6614cd33c48SRob Clark { 662a6ae74c9SRob Clark msm_gem_lock(obj); 663e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 664a6ae74c9SRob Clark msm_gem_unlock(obj); 6654cd33c48SRob Clark } 6664cd33c48SRob Clark 6674cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6684cd33c48SRob Clark * false or -errno. 6694cd33c48SRob Clark */ 6704cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6714cd33c48SRob Clark { 6724cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 67368209390SRob Clark 674a6ae74c9SRob Clark msm_gem_lock(obj); 675c8afe684SRob Clark 676c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 677c8afe684SRob Clark msm_obj->madv = madv; 678c8afe684SRob Clark 6790e08270aSSushmita Susheelendra madv = msm_obj->madv; 6800e08270aSSushmita Susheelendra 6813edfa30fSRob Clark /* If the obj is inactive, we might need to move it 6823edfa30fSRob Clark * between inactive lists 6833edfa30fSRob Clark */ 6843edfa30fSRob Clark if (msm_obj->active_count == 0) 6853edfa30fSRob Clark update_inactive(msm_obj); 6863edfa30fSRob Clark 687a6ae74c9SRob Clark msm_gem_unlock(obj); 6880e08270aSSushmita Susheelendra 6890e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 690c8afe684SRob Clark } 691c8afe684SRob Clark 692599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 69368209390SRob Clark { 69468209390SRob Clark struct drm_device *dev = obj->dev; 69568209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69668209390SRob Clark 69781d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 69890643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 69968209390SRob Clark 70020d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 70120d0ae2fSRob Clark put_iova_spaces(obj, true); 7020e08270aSSushmita Susheelendra 703599089c6SRob Clark msm_gem_vunmap(obj); 70468209390SRob Clark 70581d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 70681d4d597SRob Clark 70768209390SRob Clark put_pages(obj); 70868209390SRob Clark 7099b73bde3SIskren Chernev put_iova_vmas(obj); 7109b73bde3SIskren Chernev 71168209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 71225ed38b3SRob Clark update_inactive(msm_obj); 71368209390SRob Clark 71468209390SRob Clark drm_gem_free_mmap_offset(obj); 71568209390SRob Clark 71668209390SRob Clark /* Our goal here is to return as much of the memory as 71768209390SRob Clark * is possible back to the system as we are called from OOM. 71868209390SRob Clark * To do this we must instruct the shmfs to drop all of its 71968209390SRob Clark * backing pages, *now*. 72068209390SRob Clark */ 72168209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 72268209390SRob Clark 72368209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 72468209390SRob Clark 0, (loff_t)-1); 72568209390SRob Clark } 72668209390SRob Clark 72737c68900SLee Jones /* 72863f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 72963f17ef8SRob Clark */ 73063f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 73163f17ef8SRob Clark { 73263f17ef8SRob Clark struct drm_device *dev = obj->dev; 73363f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 73463f17ef8SRob Clark 73563f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 73663f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 73763f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 73863f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 73963f17ef8SRob Clark 74063f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 74163f17ef8SRob Clark put_iova_spaces(obj, false); 74263f17ef8SRob Clark 74363f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 74463f17ef8SRob Clark 74563f17ef8SRob Clark put_pages(obj); 74663f17ef8SRob Clark 74763f17ef8SRob Clark update_inactive(msm_obj); 74863f17ef8SRob Clark } 74963f17ef8SRob Clark 750599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 751e1e9db2cSRob Clark { 752e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 753e1e9db2cSRob Clark 75490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7550e08270aSSushmita Susheelendra 75690643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 757e1e9db2cSRob Clark return; 758e1e9db2cSRob Clark 759e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 760e1e9db2cSRob Clark msm_obj->vaddr = NULL; 761e1e9db2cSRob Clark } 762e1e9db2cSRob Clark 7639d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7647198e6b0SRob Clark { 7657198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 766d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 767d984457bSRob Clark 768d984457bSRob Clark might_sleep(); 76990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 77090643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 77190643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 7729d8baa2bSAkhil P Oommen 773ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 774d984457bSRob Clark mutex_lock(&priv->mm_lock); 77564fcbde7SRob Clark if (msm_obj->evictable) 77664fcbde7SRob Clark mark_unevictable(msm_obj); 777a83cc4fbSBaokun Li list_move_tail(&msm_obj->mm_list, &gpu->active_list); 778d984457bSRob Clark mutex_unlock(&priv->mm_lock); 7797198e6b0SRob Clark } 7809d8baa2bSAkhil P Oommen } 7817198e6b0SRob Clark 7829d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 7837198e6b0SRob Clark { 7847198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7857198e6b0SRob Clark 786d984457bSRob Clark might_sleep(); 78790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7887198e6b0SRob Clark 789ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 7903edfa30fSRob Clark update_inactive(msm_obj); 7917198e6b0SRob Clark } 7929d8baa2bSAkhil P Oommen } 7937198e6b0SRob Clark 7943edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 7953edfa30fSRob Clark { 7963edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 7973edfa30fSRob Clark 79864fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 79964fcbde7SRob Clark 80064fcbde7SRob Clark if (msm_obj->active_count != 0) 80164fcbde7SRob Clark return; 80264fcbde7SRob Clark 8033edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8043edfa30fSRob Clark 805cc8a4d5aSRob Clark if (msm_obj->dontneed) 8060054eeb7SRob Clark mark_unpurgeable(msm_obj); 80764fcbde7SRob Clark if (msm_obj->evictable) 80864fcbde7SRob Clark mark_unevictable(msm_obj); 809cc8a4d5aSRob Clark 810cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 81164fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8123edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 81364fcbde7SRob Clark mark_evictable(msm_obj); 814cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8153edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8160054eeb7SRob Clark mark_purgeable(msm_obj); 817cc8a4d5aSRob Clark } else { 81864fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 81964fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 820cc8a4d5aSRob Clark } 8213edfa30fSRob Clark 8223edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8233edfa30fSRob Clark } 8243edfa30fSRob Clark 825ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 826ba00c3f2SRob Clark { 827b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 828f755e227SChris Wilson unsigned long remain = 829f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 830f755e227SChris Wilson long ret; 831b6295f9aSRob Clark 832d3fae3b3SChristian König ret = dma_resv_wait_timeout(obj->resv, write, true, remain); 833f755e227SChris Wilson if (ret == 0) 834f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 835f755e227SChris Wilson else if (ret < 0) 836f755e227SChris Wilson return ret; 837ba00c3f2SRob Clark 8387198e6b0SRob Clark /* TODO cache maintenance */ 8397198e6b0SRob Clark 840b6295f9aSRob Clark return 0; 8417198e6b0SRob Clark } 8427198e6b0SRob Clark 8437198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8447198e6b0SRob Clark { 8457198e6b0SRob Clark /* TODO cache maintenance */ 846c8afe684SRob Clark return 0; 847c8afe684SRob Clark } 848c8afe684SRob Clark 849c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 850528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 851528107c8SRob Clark struct msm_gem_stats *stats) 852c8afe684SRob Clark { 853c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 85452791eeeSChristian König struct dma_resv *robj = obj->resv; 8554b85f7f5SRob Clark struct msm_gem_vma *vma; 856c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8574cd33c48SRob Clark const char *madv; 858c8afe684SRob Clark 859a6ae74c9SRob Clark msm_gem_lock(obj); 860b6295f9aSRob Clark 861528107c8SRob Clark stats->all.count++; 862528107c8SRob Clark stats->all.size += obj->size; 863528107c8SRob Clark 864528107c8SRob Clark if (is_active(msm_obj)) { 865528107c8SRob Clark stats->active.count++; 866528107c8SRob Clark stats->active.size += obj->size; 867528107c8SRob Clark } 868528107c8SRob Clark 869f48f3563SRob Clark if (msm_obj->pages) { 870f48f3563SRob Clark stats->resident.count++; 871f48f3563SRob Clark stats->resident.size += obj->size; 872f48f3563SRob Clark } 873f48f3563SRob Clark 8744cd33c48SRob Clark switch (msm_obj->madv) { 8754cd33c48SRob Clark case __MSM_MADV_PURGED: 876528107c8SRob Clark stats->purged.count++; 877528107c8SRob Clark stats->purged.size += obj->size; 8784cd33c48SRob Clark madv = " purged"; 8794cd33c48SRob Clark break; 8804cd33c48SRob Clark case MSM_MADV_DONTNEED: 8810054eeb7SRob Clark stats->purgeable.count++; 8820054eeb7SRob Clark stats->purgeable.size += obj->size; 8834cd33c48SRob Clark madv = " purgeable"; 8844cd33c48SRob Clark break; 8854cd33c48SRob Clark case MSM_MADV_WILLNEED: 8864cd33c48SRob Clark default: 8874cd33c48SRob Clark madv = ""; 8884cd33c48SRob Clark break; 8894cd33c48SRob Clark } 8904cd33c48SRob Clark 891575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 8927198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 8932c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 894667ce33eSRob Clark off, msm_obj->vaddr); 895667ce33eSRob Clark 8960815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 897667ce33eSRob Clark 898575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 899575f0485SJordan Crouse 900575f0485SJordan Crouse seq_puts(m, " vmas:"); 901575f0485SJordan Crouse 90225faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 90325faf2f2SRob Clark const char *name, *comm; 90425faf2f2SRob Clark if (vma->aspace) { 90525faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 90625faf2f2SRob Clark struct task_struct *task = 90725faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 90825faf2f2SRob Clark if (task) { 90925faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 91025faf2f2SRob Clark } else { 91125faf2f2SRob Clark comm = NULL; 91225faf2f2SRob Clark } 91325faf2f2SRob Clark name = aspace->name; 91425faf2f2SRob Clark } else { 91525faf2f2SRob Clark name = comm = NULL; 91625faf2f2SRob Clark } 91725faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 91825faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 91925faf2f2SRob Clark vma->aspace, vma->iova, 92025faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 921ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 92225faf2f2SRob Clark kfree(comm); 92325faf2f2SRob Clark } 924575f0485SJordan Crouse 925575f0485SJordan Crouse seq_puts(m, "\n"); 926575f0485SJordan Crouse } 927b6295f9aSRob Clark 928f19ee2f3SChristian König dma_resv_describe(robj, m); 929a6ae74c9SRob Clark msm_gem_unlock(obj); 930c8afe684SRob Clark } 931c8afe684SRob Clark 932c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 933c8afe684SRob Clark { 934528107c8SRob Clark struct msm_gem_stats stats = {}; 935c8afe684SRob Clark struct msm_gem_object *msm_obj; 936c8afe684SRob Clark 9370815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9386ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 939c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 940575f0485SJordan Crouse seq_puts(m, " "); 941528107c8SRob Clark msm_gem_describe(obj, m, &stats); 942c8afe684SRob Clark } 943c8afe684SRob Clark 944528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 945528107c8SRob Clark stats.all.count, stats.all.size); 946528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 947528107c8SRob Clark stats.active.count, stats.active.size); 948f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 949f48f3563SRob Clark stats.resident.count, stats.resident.size); 950f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9510054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 952528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 953528107c8SRob Clark stats.purged.count, stats.purged.size); 954c8afe684SRob Clark } 955c8afe684SRob Clark #endif 956c8afe684SRob Clark 957030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 958c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 959c8afe684SRob Clark { 960c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 96148e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 96248e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 96348e7f183SKristian H. Kristensen 9646ed0897cSRob Clark mutex_lock(&priv->obj_lock); 9656ed0897cSRob Clark list_del(&msm_obj->node); 9666ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 9676ed0897cSRob Clark 968d984457bSRob Clark mutex_lock(&priv->mm_lock); 969cc8a4d5aSRob Clark if (msm_obj->dontneed) 9700054eeb7SRob Clark mark_unpurgeable(msm_obj); 971c8afe684SRob Clark list_del(&msm_obj->mm_list); 972d984457bSRob Clark mutex_unlock(&priv->mm_lock); 973c8afe684SRob Clark 974a6ae74c9SRob Clark msm_gem_lock(obj); 975c8afe684SRob Clark 976c8afe684SRob Clark /* object should not be on active list: */ 97790643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 978c8afe684SRob Clark 97920d0ae2fSRob Clark put_iova_spaces(obj, true); 980c8afe684SRob Clark 98105b84911SRob Clark if (obj->import_attach) { 98290643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 98305b84911SRob Clark 98405b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 98505b84911SRob Clark * ours, just free the array we allocated: 98605b84911SRob Clark */ 9872098105eSMichal Hocko kvfree(msm_obj->pages); 98805b84911SRob Clark 98957f04815SRob Clark put_iova_vmas(obj); 99057f04815SRob Clark 9916c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 9926c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 9936c0e3ea2SRob Clark */ 9946c0e3ea2SRob Clark msm_gem_unlock(obj); 9956c0e3ea2SRob Clark 996f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 99705b84911SRob Clark } else { 998599089c6SRob Clark msm_gem_vunmap(obj); 999c8afe684SRob Clark put_pages(obj); 100057f04815SRob Clark put_iova_vmas(obj); 10016c0e3ea2SRob Clark msm_gem_unlock(obj); 100205b84911SRob Clark } 1003c8afe684SRob Clark 1004c8afe684SRob Clark drm_gem_object_release(obj); 1005c8afe684SRob Clark 1006c8afe684SRob Clark kfree(msm_obj); 1007c8afe684SRob Clark } 1008c8afe684SRob Clark 1009510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1010510410bfSThomas Zimmermann { 1011510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1012510410bfSThomas Zimmermann 10133466d9e2SDouglas Anderson vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; 1014510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1015510410bfSThomas Zimmermann 1016510410bfSThomas Zimmermann return 0; 1017510410bfSThomas Zimmermann } 1018510410bfSThomas Zimmermann 1019c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1020c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10210815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10220815d774SJordan Crouse char *name) 1023c8afe684SRob Clark { 1024c8afe684SRob Clark struct drm_gem_object *obj; 1025c8afe684SRob Clark int ret; 1026c8afe684SRob Clark 1027c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1028c8afe684SRob Clark 1029c8afe684SRob Clark if (IS_ERR(obj)) 1030c8afe684SRob Clark return PTR_ERR(obj); 1031c8afe684SRob Clark 10320815d774SJordan Crouse if (name) 10330815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10340815d774SJordan Crouse 1035c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1036c8afe684SRob Clark 1037c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1038f7d33950SEmil Velikov drm_gem_object_put(obj); 1039c8afe684SRob Clark 1040c8afe684SRob Clark return ret; 1041c8afe684SRob Clark } 1042c8afe684SRob Clark 10433c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10443c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10453c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10463c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10473c9edd9cSThomas Zimmermann }; 10483c9edd9cSThomas Zimmermann 10493c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10503c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10513c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10523c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10533c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10543c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10553c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1056510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 10573c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10583c9edd9cSThomas Zimmermann }; 10593c9edd9cSThomas Zimmermann 106005b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 106105b84911SRob Clark uint32_t size, uint32_t flags, 10623cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1063c8afe684SRob Clark { 1064d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1065c8afe684SRob Clark struct msm_gem_object *msm_obj; 1066c8afe684SRob Clark 1067c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1068c8afe684SRob Clark case MSM_BO_UNCACHED: 1069c8afe684SRob Clark case MSM_BO_CACHED: 1070c8afe684SRob Clark case MSM_BO_WC: 1071c8afe684SRob Clark break; 1072d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1073d12e3390SJonathan Marek if (priv->has_cached_coherent) 1074d12e3390SJonathan Marek break; 1075e181ad43SGustavo A. R. Silva fallthrough; 1076c8afe684SRob Clark default: 10772d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1078c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 107905b84911SRob Clark return -EINVAL; 1080c8afe684SRob Clark } 1081c8afe684SRob Clark 1082667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 108305b84911SRob Clark if (!msm_obj) 108405b84911SRob Clark return -ENOMEM; 1085c8afe684SRob Clark 1086c8afe684SRob Clark msm_obj->flags = flags; 10874cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1088c8afe684SRob Clark 1089027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 10904b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 10914b85f7f5SRob Clark 109205b84911SRob Clark *obj = &msm_obj->base; 10933c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 109405b84911SRob Clark 109505b84911SRob Clark return 0; 109605b84911SRob Clark } 109705b84911SRob Clark 1098030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 109905b84911SRob Clark { 1100f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11013cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1102871d812aSRob Clark struct drm_gem_object *obj = NULL; 1103f4839bd5SRob Clark bool use_vram = false; 110405b84911SRob Clark int ret; 110505b84911SRob Clark 110605b84911SRob Clark size = PAGE_ALIGN(size); 110705b84911SRob Clark 1108c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1109f4839bd5SRob Clark use_vram = true; 111086f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1111f4839bd5SRob Clark use_vram = true; 1112f4839bd5SRob Clark 111390643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1114f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1115f4839bd5SRob Clark 11161a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11171a5dff5dSJordan Crouse * infrastructure grumpy 11181a5dff5dSJordan Crouse */ 11191a5dff5dSJordan Crouse if (size == 0) 11201a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11211a5dff5dSJordan Crouse 11223cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 112305b84911SRob Clark if (ret) 11242203bd0eSDan Carpenter return ERR_PTR(ret); 112505b84911SRob Clark 11263cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11273cbdc8d8SAkhil P Oommen 1128f4839bd5SRob Clark if (use_vram) { 11294b85f7f5SRob Clark struct msm_gem_vma *vma; 1130f4839bd5SRob Clark struct page **pages; 1131b3949a9aSHans Verkuil 1132a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1133a694ffedSIskren Chernev 1134a6ae74c9SRob Clark msm_gem_lock(obj); 1135f4839bd5SRob Clark 11364b85f7f5SRob Clark vma = add_vma(obj, NULL); 1137a6ae74c9SRob Clark msm_gem_unlock(obj); 11384b85f7f5SRob Clark if (IS_ERR(vma)) { 11394b85f7f5SRob Clark ret = PTR_ERR(vma); 11404b85f7f5SRob Clark goto fail; 11414b85f7f5SRob Clark } 11424b85f7f5SRob Clark 11434b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11444b85f7f5SRob Clark 114545f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 114645f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 114745f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 114845f56690SAlexey Minnekhanov * mm_list to be empty. 114945f56690SAlexey Minnekhanov */ 115045f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 115145f56690SAlexey Minnekhanov 115207fcad0dSIskren Chernev msm_gem_lock(obj); 1153f4839bd5SRob Clark pages = get_pages(obj); 115407fcad0dSIskren Chernev msm_gem_unlock(obj); 1155f4839bd5SRob Clark if (IS_ERR(pages)) { 1156f4839bd5SRob Clark ret = PTR_ERR(pages); 1157f4839bd5SRob Clark goto fail; 1158f4839bd5SRob Clark } 11594b85f7f5SRob Clark 11604b85f7f5SRob Clark vma->iova = physaddr(obj); 1161f4839bd5SRob Clark } else { 116205b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 116305b84911SRob Clark if (ret) 116405b84911SRob Clark goto fail; 11650abdba47SLucas Stach /* 11660abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11670abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11680abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11690abdba47SLucas Stach * expected if you're going to pin these pages. 11700abdba47SLucas Stach */ 11710abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1172871d812aSRob Clark } 117305b84911SRob Clark 1174d984457bSRob Clark mutex_lock(&priv->mm_lock); 117564fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1176d984457bSRob Clark mutex_unlock(&priv->mm_lock); 11773cbdc8d8SAkhil P Oommen 11786ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11796ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11806ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11816ed0897cSRob Clark 118205b84911SRob Clark return obj; 118305b84911SRob Clark 118405b84911SRob Clark fail: 1185f7d33950SEmil Velikov drm_gem_object_put(obj); 118605b84911SRob Clark return ERR_PTR(ret); 118705b84911SRob Clark } 118805b84911SRob Clark 118905b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 119079f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 119105b84911SRob Clark { 11923cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 119305b84911SRob Clark struct msm_gem_object *msm_obj; 119405b84911SRob Clark struct drm_gem_object *obj; 119579f0e202SRob Clark uint32_t size; 119605b84911SRob Clark int ret, npages; 119705b84911SRob Clark 1198871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1199c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12006a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1201871d812aSRob Clark return ERR_PTR(-EINVAL); 1202871d812aSRob Clark } 1203871d812aSRob Clark 120479f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 120505b84911SRob Clark 12063cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 120705b84911SRob Clark if (ret) 12082203bd0eSDan Carpenter return ERR_PTR(ret); 120905b84911SRob Clark 121005b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 121105b84911SRob Clark 121205b84911SRob Clark npages = size / PAGE_SIZE; 121305b84911SRob Clark 121405b84911SRob Clark msm_obj = to_msm_bo(obj); 1215a6ae74c9SRob Clark msm_gem_lock(obj); 121605b84911SRob Clark msm_obj->sgt = sgt; 12172098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 121805b84911SRob Clark if (!msm_obj->pages) { 1219a6ae74c9SRob Clark msm_gem_unlock(obj); 122005b84911SRob Clark ret = -ENOMEM; 122105b84911SRob Clark goto fail; 122205b84911SRob Clark } 122305b84911SRob Clark 1224c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12250e08270aSSushmita Susheelendra if (ret) { 1226a6ae74c9SRob Clark msm_gem_unlock(obj); 122705b84911SRob Clark goto fail; 12280e08270aSSushmita Susheelendra } 122905b84911SRob Clark 1230a6ae74c9SRob Clark msm_gem_unlock(obj); 12313cbdc8d8SAkhil P Oommen 1232d984457bSRob Clark mutex_lock(&priv->mm_lock); 123364fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1234d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12353cbdc8d8SAkhil P Oommen 12366ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12376ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12386ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12396ed0897cSRob Clark 1240c8afe684SRob Clark return obj; 1241c8afe684SRob Clark 1242c8afe684SRob Clark fail: 1243f7d33950SEmil Velikov drm_gem_object_put(obj); 1244c8afe684SRob Clark return ERR_PTR(ret); 1245c8afe684SRob Clark } 12468223286dSJordan Crouse 1247030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12488223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1249030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12508223286dSJordan Crouse { 12518223286dSJordan Crouse void *vaddr; 1252030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12538223286dSJordan Crouse int ret; 12548223286dSJordan Crouse 12558223286dSJordan Crouse if (IS_ERR(obj)) 12568223286dSJordan Crouse return ERR_CAST(obj); 12578223286dSJordan Crouse 12588223286dSJordan Crouse if (iova) { 12599fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 126093f7abf1SJordan Crouse if (ret) 126193f7abf1SJordan Crouse goto err; 12628223286dSJordan Crouse } 12638223286dSJordan Crouse 12648223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1265c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12667ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 126793f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 126893f7abf1SJordan Crouse goto err; 12698223286dSJordan Crouse } 12708223286dSJordan Crouse 12718223286dSJordan Crouse if (bo) 12728223286dSJordan Crouse *bo = obj; 12738223286dSJordan Crouse 12748223286dSJordan Crouse return vaddr; 127593f7abf1SJordan Crouse err: 1276f7d33950SEmil Velikov drm_gem_object_put(obj); 127793f7abf1SJordan Crouse 127893f7abf1SJordan Crouse return ERR_PTR(ret); 127993f7abf1SJordan Crouse 12808223286dSJordan Crouse } 12818223286dSJordan Crouse 12821e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1283030af2b0SRob Clark struct msm_gem_address_space *aspace) 12841e29dff0SJordan Crouse { 12851e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 12861e29dff0SJordan Crouse return; 12871e29dff0SJordan Crouse 12881e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 12897ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1290f7d33950SEmil Velikov drm_gem_object_put(bo); 12911e29dff0SJordan Crouse } 12920815d774SJordan Crouse 12930815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 12940815d774SJordan Crouse { 12950815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 12960815d774SJordan Crouse va_list ap; 12970815d774SJordan Crouse 12980815d774SJordan Crouse if (!fmt) 12990815d774SJordan Crouse return; 13000815d774SJordan Crouse 13010815d774SJordan Crouse va_start(ap, fmt); 13020815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13030815d774SJordan Crouse va_end(ap); 13040815d774SJordan Crouse } 1305