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 41027674c66SRob 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 442311e03c2SRob Clark void msm_gem_unpin_locked(struct drm_gem_object *obj) 44327674c66SRob Clark { 44427674c66SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 44527674c66SRob Clark 44627674c66SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 44727674c66SRob Clark 44827674c66SRob Clark msm_obj->pin_count--; 44927674c66SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 45027674c66SRob Clark 45127674c66SRob Clark update_inactive(msm_obj); 45227674c66SRob Clark } 45327674c66SRob Clark 45427674c66SRob Clark struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj, 45527674c66SRob Clark struct msm_gem_address_space *aspace) 45627674c66SRob Clark { 45727674c66SRob Clark return get_vma_locked(obj, aspace, 0, U64_MAX); 45827674c66SRob Clark } 45927674c66SRob Clark 460e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 461d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 462d3b8877eSJonathan Marek u64 range_start, u64 range_end) 463c0ee9794SJordan Crouse { 464522f1abfSRob Clark struct msm_gem_vma *vma; 465c0ee9794SJordan Crouse int ret; 466c0ee9794SJordan Crouse 46790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 468c0ee9794SJordan Crouse 469522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 470522f1abfSRob Clark if (IS_ERR(vma)) 471522f1abfSRob Clark return PTR_ERR(vma); 472c0ee9794SJordan Crouse 47327674c66SRob Clark ret = msm_gem_pin_vma_locked(obj, vma); 474c0ee9794SJordan Crouse if (!ret) 475522f1abfSRob Clark *iova = vma->iova; 476c0ee9794SJordan Crouse 477c8afe684SRob Clark return ret; 478c8afe684SRob Clark } 479c8afe684SRob Clark 480e4b87d22SRob Clark /* 481e4b87d22SRob Clark * get iova and pin it. Should have a matching put 482e4b87d22SRob Clark * limits iova to specified range (in pages) 483e4b87d22SRob Clark */ 484e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 485e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 486e4b87d22SRob Clark u64 range_start, u64 range_end) 487e4b87d22SRob Clark { 488e4b87d22SRob Clark int ret; 489e4b87d22SRob Clark 490e4b87d22SRob Clark msm_gem_lock(obj); 491e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 492e4b87d22SRob Clark msm_gem_unlock(obj); 493e4b87d22SRob Clark 494e4b87d22SRob Clark return ret; 495e4b87d22SRob Clark } 496e4b87d22SRob Clark 497d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 498d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 499d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 500d3b8877eSJonathan Marek { 501d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 502d3b8877eSJonathan Marek } 503d3b8877eSJonathan Marek 5047ad0e8cfSJordan Crouse /* 5057ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5067ad0e8cfSJordan Crouse * valid for the life of the object 5077ad0e8cfSJordan Crouse */ 5089fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5099fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5109fe041f6SJordan Crouse { 511522f1abfSRob Clark struct msm_gem_vma *vma; 512522f1abfSRob Clark int ret = 0; 5139fe041f6SJordan Crouse 514a6ae74c9SRob Clark msm_gem_lock(obj); 515522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 516522f1abfSRob Clark if (IS_ERR(vma)) { 517522f1abfSRob Clark ret = PTR_ERR(vma); 518522f1abfSRob Clark } else { 519522f1abfSRob Clark *iova = vma->iova; 520522f1abfSRob Clark } 521a6ae74c9SRob Clark msm_gem_unlock(obj); 5229fe041f6SJordan Crouse 5239fe041f6SJordan Crouse return ret; 5249fe041f6SJordan Crouse } 5259fe041f6SJordan Crouse 526a636a0ffSRob Clark static int clear_iova(struct drm_gem_object *obj, 5278bdcd949SRob Clark struct msm_gem_address_space *aspace) 5282638d90aSRob Clark { 529a636a0ffSRob Clark struct msm_gem_vma *vma = lookup_vma(obj, aspace); 5304b85f7f5SRob Clark 531a636a0ffSRob Clark if (!vma) 532a636a0ffSRob Clark return 0; 5334b85f7f5SRob Clark 534a636a0ffSRob Clark if (msm_gem_vma_inuse(vma)) 535a636a0ffSRob Clark return -EBUSY; 536a636a0ffSRob Clark 537a636a0ffSRob Clark msm_gem_purge_vma(vma->aspace, vma); 538a636a0ffSRob Clark msm_gem_close_vma(vma->aspace, vma); 539a636a0ffSRob Clark del_vma(vma); 540a636a0ffSRob Clark 541a636a0ffSRob Clark return 0; 5422638d90aSRob Clark } 5432638d90aSRob Clark 5447ad0e8cfSJordan Crouse /* 545a636a0ffSRob Clark * Get the requested iova but don't pin it. Fails if the requested iova is 546a636a0ffSRob Clark * not available. Doesn't need a put because iovas are currently valid for 547a636a0ffSRob Clark * the life of the object. 548a636a0ffSRob Clark * 549a636a0ffSRob Clark * Setting an iova of zero will clear the vma. 550e4b87d22SRob Clark */ 551a636a0ffSRob Clark int msm_gem_set_iova(struct drm_gem_object *obj, 552a636a0ffSRob Clark struct msm_gem_address_space *aspace, uint64_t iova) 553e4b87d22SRob Clark { 554a636a0ffSRob Clark int ret = 0; 555a636a0ffSRob Clark 556a636a0ffSRob Clark msm_gem_lock(obj); 557a636a0ffSRob Clark if (!iova) { 558a636a0ffSRob Clark ret = clear_iova(obj, aspace); 559a636a0ffSRob Clark } else { 560e4b87d22SRob Clark struct msm_gem_vma *vma; 561a636a0ffSRob Clark vma = get_vma_locked(obj, aspace, iova, iova + obj->size); 562a636a0ffSRob Clark if (IS_ERR(vma)) { 563a636a0ffSRob Clark ret = PTR_ERR(vma); 564a636a0ffSRob Clark } else if (GEM_WARN_ON(vma->iova != iova)) { 565a636a0ffSRob Clark clear_iova(obj, aspace); 566a636a0ffSRob Clark ret = -EBUSY; 56764fcbde7SRob Clark } 568e4b87d22SRob Clark } 569a636a0ffSRob Clark msm_gem_unlock(obj); 570a636a0ffSRob Clark 571a636a0ffSRob Clark return ret; 572a636a0ffSRob Clark } 573e4b87d22SRob Clark 574e4b87d22SRob Clark /* 5757ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5767ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5777ad0e8cfSJordan Crouse * to get rid of it 5787ad0e8cfSJordan Crouse */ 5797ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5808bdcd949SRob Clark struct msm_gem_address_space *aspace) 581c8afe684SRob Clark { 58227674c66SRob Clark struct msm_gem_vma *vma; 58327674c66SRob Clark 584a6ae74c9SRob Clark msm_gem_lock(obj); 58527674c66SRob Clark vma = lookup_vma(obj, aspace); 58627674c66SRob Clark if (!GEM_WARN_ON(!vma)) { 587311e03c2SRob Clark msm_gem_unpin_vma(vma); 588311e03c2SRob Clark msm_gem_unpin_locked(obj); 58927674c66SRob Clark } 590a6ae74c9SRob Clark msm_gem_unlock(obj); 591c8afe684SRob Clark } 592c8afe684SRob Clark 593c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 594c8afe684SRob Clark struct drm_mode_create_dumb *args) 595c8afe684SRob Clark { 596c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 597c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 598c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5990815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 600c8afe684SRob Clark } 601c8afe684SRob Clark 602c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 603c8afe684SRob Clark uint32_t handle, uint64_t *offset) 604c8afe684SRob Clark { 605c8afe684SRob Clark struct drm_gem_object *obj; 606c8afe684SRob Clark int ret = 0; 607c8afe684SRob Clark 608c8afe684SRob Clark /* GEM does all our handle to object mapping */ 609a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 610c8afe684SRob Clark if (obj == NULL) { 611c8afe684SRob Clark ret = -ENOENT; 612c8afe684SRob Clark goto fail; 613c8afe684SRob Clark } 614c8afe684SRob Clark 615c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 616c8afe684SRob Clark 617f7d33950SEmil Velikov drm_gem_object_put(obj); 618c8afe684SRob Clark 619c8afe684SRob Clark fail: 620c8afe684SRob Clark return ret; 621c8afe684SRob Clark } 622c8afe684SRob Clark 623fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 624c8afe684SRob Clark { 6250e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6260e08270aSSushmita Susheelendra int ret = 0; 6270e08270aSSushmita Susheelendra 62890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 629e4b87d22SRob Clark 6308b6b7d84SDaniel Vetter if (obj->import_attach) 6318b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6328b6b7d84SDaniel Vetter 63390643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6346a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 635fad33f4bSRob Clark msm_obj->madv, madv); 6360e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 637c8afe684SRob Clark } 638c8afe684SRob Clark 6390e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 640a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6410e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6420e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 643a6ae74c9SRob Clark * hold msm_obj lock) 6440e08270aSSushmita Susheelendra */ 6450e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6460e08270aSSushmita Susheelendra 6470e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6480e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6490e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6500e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6510e08270aSSushmita Susheelendra goto fail; 6520e08270aSSushmita Susheelendra } 6530e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 654af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6550e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6560e08270aSSushmita Susheelendra ret = -ENOMEM; 6570e08270aSSushmita Susheelendra goto fail; 6580e08270aSSushmita Susheelendra } 65910f76165SRob Clark 66010f76165SRob Clark update_inactive(msm_obj); 6610e08270aSSushmita Susheelendra } 6620e08270aSSushmita Susheelendra 6630e08270aSSushmita Susheelendra return msm_obj->vaddr; 6640e08270aSSushmita Susheelendra 6650e08270aSSushmita Susheelendra fail: 666e1e9db2cSRob Clark msm_obj->vmap_count--; 6670e08270aSSushmita Susheelendra return ERR_PTR(ret); 66818f23049SRob Clark } 66918f23049SRob Clark 670e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 671e4b87d22SRob Clark { 672e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 673e4b87d22SRob Clark } 674e4b87d22SRob Clark 675fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 676fad33f4bSRob Clark { 677e4b87d22SRob Clark void *ret; 678e4b87d22SRob Clark 679e4b87d22SRob Clark msm_gem_lock(obj); 680e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 681e4b87d22SRob Clark msm_gem_unlock(obj); 682e4b87d22SRob Clark 683e4b87d22SRob Clark return ret; 684fad33f4bSRob Clark } 685fad33f4bSRob Clark 686fad33f4bSRob Clark /* 687fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 688fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 689fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 690fad33f4bSRob Clark * active list. 691fad33f4bSRob Clark */ 692fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 693fad33f4bSRob Clark { 694fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 695fad33f4bSRob Clark } 696fad33f4bSRob Clark 697e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 69818f23049SRob Clark { 6990e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 7000e08270aSSushmita Susheelendra 70190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 70290643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 703e4b87d22SRob Clark 7040e08270aSSushmita Susheelendra msm_obj->vmap_count--; 7054cd33c48SRob Clark } 7060e08270aSSushmita Susheelendra 7070e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7084cd33c48SRob Clark { 709a6ae74c9SRob Clark msm_gem_lock(obj); 710e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 711a6ae74c9SRob Clark msm_gem_unlock(obj); 7124cd33c48SRob Clark } 7134cd33c48SRob Clark 7144cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7154cd33c48SRob Clark * false or -errno. 7164cd33c48SRob Clark */ 7174cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7184cd33c48SRob Clark { 7194cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 72068209390SRob Clark 721a6ae74c9SRob Clark msm_gem_lock(obj); 722c8afe684SRob Clark 723c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 724c8afe684SRob Clark msm_obj->madv = madv; 725c8afe684SRob Clark 7260e08270aSSushmita Susheelendra madv = msm_obj->madv; 7270e08270aSSushmita Susheelendra 7283edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7293edfa30fSRob Clark * between inactive lists 7303edfa30fSRob Clark */ 7313edfa30fSRob Clark if (msm_obj->active_count == 0) 7323edfa30fSRob Clark update_inactive(msm_obj); 7333edfa30fSRob Clark 734a6ae74c9SRob Clark msm_gem_unlock(obj); 7350e08270aSSushmita Susheelendra 7360e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 737c8afe684SRob Clark } 738c8afe684SRob Clark 739599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 74068209390SRob Clark { 74168209390SRob Clark struct drm_device *dev = obj->dev; 74268209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 74368209390SRob Clark 74481d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 74590643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 74668209390SRob Clark 74720d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 74820d0ae2fSRob Clark put_iova_spaces(obj, true); 7490e08270aSSushmita Susheelendra 750599089c6SRob Clark msm_gem_vunmap(obj); 75168209390SRob Clark 75281d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 75381d4d597SRob Clark 75468209390SRob Clark put_pages(obj); 75568209390SRob Clark 7569b73bde3SIskren Chernev put_iova_vmas(obj); 7579b73bde3SIskren Chernev 75868209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 75925ed38b3SRob Clark update_inactive(msm_obj); 76068209390SRob Clark 76168209390SRob Clark drm_gem_free_mmap_offset(obj); 76268209390SRob Clark 76368209390SRob Clark /* Our goal here is to return as much of the memory as 76468209390SRob Clark * is possible back to the system as we are called from OOM. 76568209390SRob Clark * To do this we must instruct the shmfs to drop all of its 76668209390SRob Clark * backing pages, *now*. 76768209390SRob Clark */ 76868209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 76968209390SRob Clark 77068209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 77168209390SRob Clark 0, (loff_t)-1); 77268209390SRob Clark } 77368209390SRob Clark 77437c68900SLee Jones /* 77563f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 77663f17ef8SRob Clark */ 77763f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 77863f17ef8SRob Clark { 77963f17ef8SRob Clark struct drm_device *dev = obj->dev; 78063f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 78163f17ef8SRob Clark 78263f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 78363f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 78463f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 78563f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 78663f17ef8SRob Clark 78763f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 78863f17ef8SRob Clark put_iova_spaces(obj, false); 78963f17ef8SRob Clark 79063f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 79163f17ef8SRob Clark 79263f17ef8SRob Clark put_pages(obj); 79363f17ef8SRob Clark 79463f17ef8SRob Clark update_inactive(msm_obj); 79563f17ef8SRob Clark } 79663f17ef8SRob Clark 797599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 798e1e9db2cSRob Clark { 799e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 800e1e9db2cSRob Clark 80190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8020e08270aSSushmita Susheelendra 80390643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 804e1e9db2cSRob Clark return; 805e1e9db2cSRob Clark 806e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 807e1e9db2cSRob Clark msm_obj->vaddr = NULL; 808e1e9db2cSRob Clark } 809e1e9db2cSRob Clark 8109d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 8117198e6b0SRob Clark { 8127198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 813d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 814d984457bSRob Clark 815d984457bSRob Clark might_sleep(); 81690643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 81790643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 81890643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 8199d8baa2bSAkhil P Oommen 820ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 821d984457bSRob Clark mutex_lock(&priv->mm_lock); 82264fcbde7SRob Clark if (msm_obj->evictable) 82364fcbde7SRob Clark mark_unevictable(msm_obj); 824a83cc4fbSBaokun Li list_move_tail(&msm_obj->mm_list, &gpu->active_list); 825d984457bSRob Clark mutex_unlock(&priv->mm_lock); 8267198e6b0SRob Clark } 8279d8baa2bSAkhil P Oommen } 8287198e6b0SRob Clark 8299d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8307198e6b0SRob Clark { 8317198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8327198e6b0SRob Clark 833d984457bSRob Clark might_sleep(); 83490643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8357198e6b0SRob Clark 836ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8373edfa30fSRob Clark update_inactive(msm_obj); 8387198e6b0SRob Clark } 8399d8baa2bSAkhil P Oommen } 8407198e6b0SRob Clark 8413edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8423edfa30fSRob Clark { 8433edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8443edfa30fSRob Clark 84564fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 84664fcbde7SRob Clark 84764fcbde7SRob Clark if (msm_obj->active_count != 0) 84864fcbde7SRob Clark return; 84964fcbde7SRob Clark 8503edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8513edfa30fSRob Clark 852cc8a4d5aSRob Clark if (msm_obj->dontneed) 8530054eeb7SRob Clark mark_unpurgeable(msm_obj); 85464fcbde7SRob Clark if (msm_obj->evictable) 85564fcbde7SRob Clark mark_unevictable(msm_obj); 856cc8a4d5aSRob Clark 857cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 85864fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8593edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 86064fcbde7SRob Clark mark_evictable(msm_obj); 861cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8623edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8630054eeb7SRob Clark mark_purgeable(msm_obj); 864cc8a4d5aSRob Clark } else { 86564fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 86664fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 867cc8a4d5aSRob Clark } 8683edfa30fSRob Clark 8693edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8703edfa30fSRob Clark } 8713edfa30fSRob Clark 872ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 873ba00c3f2SRob Clark { 874b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 875f755e227SChris Wilson unsigned long remain = 876f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 877f755e227SChris Wilson long ret; 878b6295f9aSRob Clark 8797bc80a54SChristian König ret = dma_resv_wait_timeout(obj->resv, dma_resv_usage_rw(write), 8807bc80a54SChristian König true, remain); 881f755e227SChris Wilson if (ret == 0) 882f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 883f755e227SChris Wilson else if (ret < 0) 884f755e227SChris Wilson return ret; 885ba00c3f2SRob Clark 8867198e6b0SRob Clark /* TODO cache maintenance */ 8877198e6b0SRob Clark 888b6295f9aSRob Clark return 0; 8897198e6b0SRob Clark } 8907198e6b0SRob Clark 8917198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8927198e6b0SRob Clark { 8937198e6b0SRob Clark /* TODO cache maintenance */ 894c8afe684SRob Clark return 0; 895c8afe684SRob Clark } 896c8afe684SRob Clark 897c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 898528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 899528107c8SRob Clark struct msm_gem_stats *stats) 900c8afe684SRob Clark { 901c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 90252791eeeSChristian König struct dma_resv *robj = obj->resv; 9034b85f7f5SRob Clark struct msm_gem_vma *vma; 904c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9054cd33c48SRob Clark const char *madv; 906c8afe684SRob Clark 907a6ae74c9SRob Clark msm_gem_lock(obj); 908b6295f9aSRob Clark 909528107c8SRob Clark stats->all.count++; 910528107c8SRob Clark stats->all.size += obj->size; 911528107c8SRob Clark 912528107c8SRob Clark if (is_active(msm_obj)) { 913528107c8SRob Clark stats->active.count++; 914528107c8SRob Clark stats->active.size += obj->size; 915528107c8SRob Clark } 916528107c8SRob Clark 917f48f3563SRob Clark if (msm_obj->pages) { 918f48f3563SRob Clark stats->resident.count++; 919f48f3563SRob Clark stats->resident.size += obj->size; 920f48f3563SRob Clark } 921f48f3563SRob Clark 9224cd33c48SRob Clark switch (msm_obj->madv) { 9234cd33c48SRob Clark case __MSM_MADV_PURGED: 924528107c8SRob Clark stats->purged.count++; 925528107c8SRob Clark stats->purged.size += obj->size; 9264cd33c48SRob Clark madv = " purged"; 9274cd33c48SRob Clark break; 9284cd33c48SRob Clark case MSM_MADV_DONTNEED: 9290054eeb7SRob Clark stats->purgeable.count++; 9300054eeb7SRob Clark stats->purgeable.size += obj->size; 9314cd33c48SRob Clark madv = " purgeable"; 9324cd33c48SRob Clark break; 9334cd33c48SRob Clark case MSM_MADV_WILLNEED: 9344cd33c48SRob Clark default: 9354cd33c48SRob Clark madv = ""; 9364cd33c48SRob Clark break; 9374cd33c48SRob Clark } 9384cd33c48SRob Clark 939575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9407198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9412c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 942667ce33eSRob Clark off, msm_obj->vaddr); 943667ce33eSRob Clark 9440815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 945667ce33eSRob Clark 946575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 947575f0485SJordan Crouse 948575f0485SJordan Crouse seq_puts(m, " vmas:"); 949575f0485SJordan Crouse 95025faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 95125faf2f2SRob Clark const char *name, *comm; 95225faf2f2SRob Clark if (vma->aspace) { 95325faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 95425faf2f2SRob Clark struct task_struct *task = 95525faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 95625faf2f2SRob Clark if (task) { 95725faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 958ac3e4f42SRob Clark put_task_struct(task); 95925faf2f2SRob Clark } else { 96025faf2f2SRob Clark comm = NULL; 96125faf2f2SRob Clark } 96225faf2f2SRob Clark name = aspace->name; 96325faf2f2SRob Clark } else { 96425faf2f2SRob Clark name = comm = NULL; 96525faf2f2SRob Clark } 96625faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 96725faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 96825faf2f2SRob Clark vma->aspace, vma->iova, 96925faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 970ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 97125faf2f2SRob Clark kfree(comm); 97225faf2f2SRob Clark } 973575f0485SJordan Crouse 974575f0485SJordan Crouse seq_puts(m, "\n"); 975575f0485SJordan Crouse } 976b6295f9aSRob Clark 977f19ee2f3SChristian König dma_resv_describe(robj, m); 978a6ae74c9SRob Clark msm_gem_unlock(obj); 979c8afe684SRob Clark } 980c8afe684SRob Clark 981c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 982c8afe684SRob Clark { 983528107c8SRob Clark struct msm_gem_stats stats = {}; 984c8afe684SRob Clark struct msm_gem_object *msm_obj; 985c8afe684SRob Clark 9860815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9876ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 988c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 989575f0485SJordan Crouse seq_puts(m, " "); 990528107c8SRob Clark msm_gem_describe(obj, m, &stats); 991c8afe684SRob Clark } 992c8afe684SRob Clark 993528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 994528107c8SRob Clark stats.all.count, stats.all.size); 995528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 996528107c8SRob Clark stats.active.count, stats.active.size); 997f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 998f48f3563SRob Clark stats.resident.count, stats.resident.size); 999f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10000054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1001528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1002528107c8SRob Clark stats.purged.count, stats.purged.size); 1003c8afe684SRob Clark } 1004c8afe684SRob Clark #endif 1005c8afe684SRob Clark 1006030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 1007*6867c9afSRob Clark static void msm_gem_free_object(struct drm_gem_object *obj) 1008c8afe684SRob Clark { 1009c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 101048e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 101148e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 101248e7f183SKristian H. Kristensen 10136ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10146ed0897cSRob Clark list_del(&msm_obj->node); 10156ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10166ed0897cSRob Clark 1017d984457bSRob Clark mutex_lock(&priv->mm_lock); 1018cc8a4d5aSRob Clark if (msm_obj->dontneed) 10190054eeb7SRob Clark mark_unpurgeable(msm_obj); 1020c8afe684SRob Clark list_del(&msm_obj->mm_list); 1021d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1022c8afe684SRob Clark 1023a6ae74c9SRob Clark msm_gem_lock(obj); 1024c8afe684SRob Clark 1025c8afe684SRob Clark /* object should not be on active list: */ 102690643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 1027c8afe684SRob Clark 102820d0ae2fSRob Clark put_iova_spaces(obj, true); 1029c8afe684SRob Clark 103005b84911SRob Clark if (obj->import_attach) { 103190643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 103205b84911SRob Clark 103305b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 103405b84911SRob Clark * ours, just free the array we allocated: 103505b84911SRob Clark */ 10362098105eSMichal Hocko kvfree(msm_obj->pages); 103705b84911SRob Clark 103857f04815SRob Clark put_iova_vmas(obj); 103957f04815SRob Clark 10406c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 10416c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 10426c0e3ea2SRob Clark */ 10436c0e3ea2SRob Clark msm_gem_unlock(obj); 10446c0e3ea2SRob Clark 1045f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 104605b84911SRob Clark } else { 1047599089c6SRob Clark msm_gem_vunmap(obj); 1048c8afe684SRob Clark put_pages(obj); 104957f04815SRob Clark put_iova_vmas(obj); 10506c0e3ea2SRob Clark msm_gem_unlock(obj); 105105b84911SRob Clark } 1052c8afe684SRob Clark 1053c8afe684SRob Clark drm_gem_object_release(obj); 1054c8afe684SRob Clark 1055c8afe684SRob Clark kfree(msm_obj); 1056c8afe684SRob Clark } 1057c8afe684SRob Clark 1058510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1059510410bfSThomas Zimmermann { 1060510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1061510410bfSThomas Zimmermann 10623466d9e2SDouglas Anderson vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; 1063510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1064510410bfSThomas Zimmermann 1065510410bfSThomas Zimmermann return 0; 1066510410bfSThomas Zimmermann } 1067510410bfSThomas Zimmermann 1068c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1069c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10700815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10710815d774SJordan Crouse char *name) 1072c8afe684SRob Clark { 1073c8afe684SRob Clark struct drm_gem_object *obj; 1074c8afe684SRob Clark int ret; 1075c8afe684SRob Clark 1076c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1077c8afe684SRob Clark 1078c8afe684SRob Clark if (IS_ERR(obj)) 1079c8afe684SRob Clark return PTR_ERR(obj); 1080c8afe684SRob Clark 10810815d774SJordan Crouse if (name) 10820815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10830815d774SJordan Crouse 1084c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1085c8afe684SRob Clark 1086c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1087f7d33950SEmil Velikov drm_gem_object_put(obj); 1088c8afe684SRob Clark 1089c8afe684SRob Clark return ret; 1090c8afe684SRob Clark } 1091c8afe684SRob Clark 10923c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10933c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10943c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10953c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10963c9edd9cSThomas Zimmermann }; 10973c9edd9cSThomas Zimmermann 10983c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10993c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11003c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11013c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11023c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11033c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11043c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1105510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 11063c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11073c9edd9cSThomas Zimmermann }; 11083c9edd9cSThomas Zimmermann 110905b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 111005b84911SRob Clark uint32_t size, uint32_t flags, 11113cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1112c8afe684SRob Clark { 1113d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1114c8afe684SRob Clark struct msm_gem_object *msm_obj; 1115c8afe684SRob Clark 1116c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1117c8afe684SRob Clark case MSM_BO_UNCACHED: 1118c8afe684SRob Clark case MSM_BO_CACHED: 1119c8afe684SRob Clark case MSM_BO_WC: 1120c8afe684SRob Clark break; 1121d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1122d12e3390SJonathan Marek if (priv->has_cached_coherent) 1123d12e3390SJonathan Marek break; 1124e181ad43SGustavo A. R. Silva fallthrough; 1125c8afe684SRob Clark default: 11262d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1127c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 112805b84911SRob Clark return -EINVAL; 1129c8afe684SRob Clark } 1130c8afe684SRob Clark 1131667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 113205b84911SRob Clark if (!msm_obj) 113305b84911SRob Clark return -ENOMEM; 1134c8afe684SRob Clark 1135c8afe684SRob Clark msm_obj->flags = flags; 11364cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1137c8afe684SRob Clark 1138027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 11394b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11404b85f7f5SRob Clark 114105b84911SRob Clark *obj = &msm_obj->base; 11423c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 114305b84911SRob Clark 114405b84911SRob Clark return 0; 114505b84911SRob Clark } 114605b84911SRob Clark 1147030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 114805b84911SRob Clark { 1149f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11503cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1151871d812aSRob Clark struct drm_gem_object *obj = NULL; 1152f4839bd5SRob Clark bool use_vram = false; 115305b84911SRob Clark int ret; 115405b84911SRob Clark 115505b84911SRob Clark size = PAGE_ALIGN(size); 115605b84911SRob Clark 1157c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1158f4839bd5SRob Clark use_vram = true; 115986f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1160f4839bd5SRob Clark use_vram = true; 1161f4839bd5SRob Clark 116290643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1163f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1164f4839bd5SRob Clark 11651a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11661a5dff5dSJordan Crouse * infrastructure grumpy 11671a5dff5dSJordan Crouse */ 11681a5dff5dSJordan Crouse if (size == 0) 11691a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11701a5dff5dSJordan Crouse 11713cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 117205b84911SRob Clark if (ret) 11732203bd0eSDan Carpenter return ERR_PTR(ret); 117405b84911SRob Clark 11753cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11763cbdc8d8SAkhil P Oommen 1177f4839bd5SRob Clark if (use_vram) { 11784b85f7f5SRob Clark struct msm_gem_vma *vma; 1179f4839bd5SRob Clark struct page **pages; 1180b3949a9aSHans Verkuil 1181a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1182a694ffedSIskren Chernev 1183a6ae74c9SRob Clark msm_gem_lock(obj); 1184f4839bd5SRob Clark 11854b85f7f5SRob Clark vma = add_vma(obj, NULL); 1186a6ae74c9SRob Clark msm_gem_unlock(obj); 11874b85f7f5SRob Clark if (IS_ERR(vma)) { 11884b85f7f5SRob Clark ret = PTR_ERR(vma); 11894b85f7f5SRob Clark goto fail; 11904b85f7f5SRob Clark } 11914b85f7f5SRob Clark 11924b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11934b85f7f5SRob Clark 119445f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 119545f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 119645f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 119745f56690SAlexey Minnekhanov * mm_list to be empty. 119845f56690SAlexey Minnekhanov */ 119945f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 120045f56690SAlexey Minnekhanov 120107fcad0dSIskren Chernev msm_gem_lock(obj); 1202f4839bd5SRob Clark pages = get_pages(obj); 120307fcad0dSIskren Chernev msm_gem_unlock(obj); 1204f4839bd5SRob Clark if (IS_ERR(pages)) { 1205f4839bd5SRob Clark ret = PTR_ERR(pages); 1206f4839bd5SRob Clark goto fail; 1207f4839bd5SRob Clark } 12084b85f7f5SRob Clark 12094b85f7f5SRob Clark vma->iova = physaddr(obj); 1210f4839bd5SRob Clark } else { 121105b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 121205b84911SRob Clark if (ret) 121305b84911SRob Clark goto fail; 12140abdba47SLucas Stach /* 12150abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12160abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12170abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12180abdba47SLucas Stach * expected if you're going to pin these pages. 12190abdba47SLucas Stach */ 12200abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1221871d812aSRob Clark } 122205b84911SRob Clark 1223d984457bSRob Clark mutex_lock(&priv->mm_lock); 122464fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1225d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12263cbdc8d8SAkhil P Oommen 12276ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12286ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12296ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12306ed0897cSRob Clark 123105b84911SRob Clark return obj; 123205b84911SRob Clark 123305b84911SRob Clark fail: 1234f7d33950SEmil Velikov drm_gem_object_put(obj); 123505b84911SRob Clark return ERR_PTR(ret); 123605b84911SRob Clark } 123705b84911SRob Clark 123805b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 123979f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 124005b84911SRob Clark { 12413cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 124205b84911SRob Clark struct msm_gem_object *msm_obj; 124305b84911SRob Clark struct drm_gem_object *obj; 124479f0e202SRob Clark uint32_t size; 124505b84911SRob Clark int ret, npages; 124605b84911SRob Clark 1247871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1248c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12496a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1250871d812aSRob Clark return ERR_PTR(-EINVAL); 1251871d812aSRob Clark } 1252871d812aSRob Clark 125379f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 125405b84911SRob Clark 12553cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 125605b84911SRob Clark if (ret) 12572203bd0eSDan Carpenter return ERR_PTR(ret); 125805b84911SRob Clark 125905b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 126005b84911SRob Clark 126105b84911SRob Clark npages = size / PAGE_SIZE; 126205b84911SRob Clark 126305b84911SRob Clark msm_obj = to_msm_bo(obj); 1264a6ae74c9SRob Clark msm_gem_lock(obj); 126505b84911SRob Clark msm_obj->sgt = sgt; 12662098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 126705b84911SRob Clark if (!msm_obj->pages) { 1268a6ae74c9SRob Clark msm_gem_unlock(obj); 126905b84911SRob Clark ret = -ENOMEM; 127005b84911SRob Clark goto fail; 127105b84911SRob Clark } 127205b84911SRob Clark 1273c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12740e08270aSSushmita Susheelendra if (ret) { 1275a6ae74c9SRob Clark msm_gem_unlock(obj); 127605b84911SRob Clark goto fail; 12770e08270aSSushmita Susheelendra } 127805b84911SRob Clark 1279a6ae74c9SRob Clark msm_gem_unlock(obj); 12803cbdc8d8SAkhil P Oommen 1281d984457bSRob Clark mutex_lock(&priv->mm_lock); 128264fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1283d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12843cbdc8d8SAkhil P Oommen 12856ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12866ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12876ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12886ed0897cSRob Clark 1289c8afe684SRob Clark return obj; 1290c8afe684SRob Clark 1291c8afe684SRob Clark fail: 1292f7d33950SEmil Velikov drm_gem_object_put(obj); 1293c8afe684SRob Clark return ERR_PTR(ret); 1294c8afe684SRob Clark } 12958223286dSJordan Crouse 1296030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12978223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1298030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12998223286dSJordan Crouse { 13008223286dSJordan Crouse void *vaddr; 1301030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 13028223286dSJordan Crouse int ret; 13038223286dSJordan Crouse 13048223286dSJordan Crouse if (IS_ERR(obj)) 13058223286dSJordan Crouse return ERR_CAST(obj); 13068223286dSJordan Crouse 13078223286dSJordan Crouse if (iova) { 13089fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 130993f7abf1SJordan Crouse if (ret) 131093f7abf1SJordan Crouse goto err; 13118223286dSJordan Crouse } 13128223286dSJordan Crouse 13138223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1314c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13157ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 131693f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 131793f7abf1SJordan Crouse goto err; 13188223286dSJordan Crouse } 13198223286dSJordan Crouse 13208223286dSJordan Crouse if (bo) 13218223286dSJordan Crouse *bo = obj; 13228223286dSJordan Crouse 13238223286dSJordan Crouse return vaddr; 132493f7abf1SJordan Crouse err: 1325f7d33950SEmil Velikov drm_gem_object_put(obj); 132693f7abf1SJordan Crouse 132793f7abf1SJordan Crouse return ERR_PTR(ret); 132893f7abf1SJordan Crouse 13298223286dSJordan Crouse } 13308223286dSJordan Crouse 13311e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1332030af2b0SRob Clark struct msm_gem_address_space *aspace) 13331e29dff0SJordan Crouse { 13341e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 13351e29dff0SJordan Crouse return; 13361e29dff0SJordan Crouse 13371e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 13387ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1339f7d33950SEmil Velikov drm_gem_object_put(bo); 13401e29dff0SJordan Crouse } 13410815d774SJordan Crouse 13420815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 13430815d774SJordan Crouse { 13440815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13450815d774SJordan Crouse va_list ap; 13460815d774SJordan Crouse 13470815d774SJordan Crouse if (!fmt) 13480815d774SJordan Crouse return; 13490815d774SJordan Crouse 13500815d774SJordan Crouse va_start(ap, fmt); 13510815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13520815d774SJordan Crouse va_end(ap); 13530815d774SJordan Crouse } 1354