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 379*522f1abfSRob Clark static struct msm_gem_vma *get_vma_locked(struct drm_gem_object *obj, 380*522f1abfSRob 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) { 390*522f1abfSRob Clark int ret; 391*522f1abfSRob Clark 3924b85f7f5SRob Clark vma = add_vma(obj, aspace); 393c0ee9794SJordan Crouse if (IS_ERR(vma)) 394*522f1abfSRob 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); 400*522f1abfSRob Clark return ERR_PTR(ret); 401c8afe684SRob Clark } 402*522f1abfSRob Clark } else { 403*522f1abfSRob Clark GEM_WARN_ON(vma->iova < range_start); 404*522f1abfSRob Clark GEM_WARN_ON((vma->iova + obj->size) > range_end); 4054b85f7f5SRob Clark } 4064b85f7f5SRob Clark 407*522f1abfSRob Clark return vma; 408c0ee9794SJordan Crouse } 4094b85f7f5SRob Clark 410*522f1abfSRob Clark static int msm_gem_pin_iova(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 434*522f1abfSRob 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 442e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 443d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 444d3b8877eSJonathan Marek u64 range_start, u64 range_end) 445c0ee9794SJordan Crouse { 446*522f1abfSRob Clark struct msm_gem_vma *vma; 447c0ee9794SJordan Crouse int ret; 448c0ee9794SJordan Crouse 44990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 450c0ee9794SJordan Crouse 451*522f1abfSRob Clark vma = get_vma_locked(obj, aspace, range_start, range_end); 452*522f1abfSRob Clark if (IS_ERR(vma)) 453*522f1abfSRob Clark return PTR_ERR(vma); 454c0ee9794SJordan Crouse 455*522f1abfSRob Clark ret = msm_gem_pin_iova(obj, vma); 456c0ee9794SJordan Crouse if (!ret) 457*522f1abfSRob Clark *iova = vma->iova; 458c0ee9794SJordan Crouse 459c8afe684SRob Clark return ret; 460c8afe684SRob Clark } 461c8afe684SRob Clark 462e4b87d22SRob Clark /* 463e4b87d22SRob Clark * get iova and pin it. Should have a matching put 464e4b87d22SRob Clark * limits iova to specified range (in pages) 465e4b87d22SRob Clark */ 466e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 467e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 468e4b87d22SRob Clark u64 range_start, u64 range_end) 469e4b87d22SRob Clark { 470e4b87d22SRob Clark int ret; 471e4b87d22SRob Clark 472e4b87d22SRob Clark msm_gem_lock(obj); 473e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 474e4b87d22SRob Clark msm_gem_unlock(obj); 475e4b87d22SRob Clark 476e4b87d22SRob Clark return ret; 477e4b87d22SRob Clark } 478e4b87d22SRob Clark 479e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 480e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 481e4b87d22SRob Clark { 482e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 483e4b87d22SRob Clark } 484e4b87d22SRob Clark 485d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 486d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 487d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 488d3b8877eSJonathan Marek { 489d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 490d3b8877eSJonathan Marek } 491d3b8877eSJonathan Marek 4927ad0e8cfSJordan Crouse /* 4937ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 4947ad0e8cfSJordan Crouse * valid for the life of the object 4957ad0e8cfSJordan Crouse */ 4969fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 4979fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 4989fe041f6SJordan Crouse { 499*522f1abfSRob Clark struct msm_gem_vma *vma; 500*522f1abfSRob Clark int ret = 0; 5019fe041f6SJordan Crouse 502a6ae74c9SRob Clark msm_gem_lock(obj); 503*522f1abfSRob Clark vma = get_vma_locked(obj, aspace, 0, U64_MAX); 504*522f1abfSRob Clark if (IS_ERR(vma)) { 505*522f1abfSRob Clark ret = PTR_ERR(vma); 506*522f1abfSRob Clark } else { 507*522f1abfSRob Clark *iova = vma->iova; 508*522f1abfSRob Clark } 509a6ae74c9SRob Clark msm_gem_unlock(obj); 5109fe041f6SJordan Crouse 5119fe041f6SJordan Crouse return ret; 5129fe041f6SJordan Crouse } 5139fe041f6SJordan Crouse 5147ad0e8cfSJordan Crouse /* 515e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 516e4b87d22SRob Clark */ 517e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 518e4b87d22SRob Clark struct msm_gem_address_space *aspace) 519e4b87d22SRob Clark { 52064fcbde7SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 521e4b87d22SRob Clark struct msm_gem_vma *vma; 522e4b87d22SRob Clark 52390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 524e4b87d22SRob Clark 525e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 526e4b87d22SRob Clark 52764fcbde7SRob Clark if (!GEM_WARN_ON(!vma)) { 528e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 52964fcbde7SRob Clark 53064fcbde7SRob Clark msm_obj->pin_count--; 53164fcbde7SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 53264fcbde7SRob Clark 53364fcbde7SRob Clark update_inactive(msm_obj); 53464fcbde7SRob Clark } 535e4b87d22SRob Clark } 536e4b87d22SRob Clark 537e4b87d22SRob Clark /* 5387ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5397ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5407ad0e8cfSJordan Crouse * to get rid of it 5417ad0e8cfSJordan Crouse */ 5427ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5438bdcd949SRob Clark struct msm_gem_address_space *aspace) 544c8afe684SRob Clark { 545a6ae74c9SRob Clark msm_gem_lock(obj); 546e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 547a6ae74c9SRob Clark msm_gem_unlock(obj); 548c8afe684SRob Clark } 549c8afe684SRob Clark 550c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 551c8afe684SRob Clark struct drm_mode_create_dumb *args) 552c8afe684SRob Clark { 553c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 554c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 555c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5560815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 557c8afe684SRob Clark } 558c8afe684SRob Clark 559c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 560c8afe684SRob Clark uint32_t handle, uint64_t *offset) 561c8afe684SRob Clark { 562c8afe684SRob Clark struct drm_gem_object *obj; 563c8afe684SRob Clark int ret = 0; 564c8afe684SRob Clark 565c8afe684SRob Clark /* GEM does all our handle to object mapping */ 566a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 567c8afe684SRob Clark if (obj == NULL) { 568c8afe684SRob Clark ret = -ENOENT; 569c8afe684SRob Clark goto fail; 570c8afe684SRob Clark } 571c8afe684SRob Clark 572c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 573c8afe684SRob Clark 574f7d33950SEmil Velikov drm_gem_object_put(obj); 575c8afe684SRob Clark 576c8afe684SRob Clark fail: 577c8afe684SRob Clark return ret; 578c8afe684SRob Clark } 579c8afe684SRob Clark 580fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 581c8afe684SRob Clark { 5820e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5830e08270aSSushmita Susheelendra int ret = 0; 5840e08270aSSushmita Susheelendra 58590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 586e4b87d22SRob Clark 5878b6b7d84SDaniel Vetter if (obj->import_attach) 5888b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 5898b6b7d84SDaniel Vetter 59090643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 5916a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 592fad33f4bSRob Clark msm_obj->madv, madv); 5930e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 594c8afe684SRob Clark } 595c8afe684SRob Clark 5960e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 597a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 5980e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 5990e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 600a6ae74c9SRob Clark * hold msm_obj lock) 6010e08270aSSushmita Susheelendra */ 6020e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6030e08270aSSushmita Susheelendra 6040e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6050e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6060e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6070e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6080e08270aSSushmita Susheelendra goto fail; 6090e08270aSSushmita Susheelendra } 6100e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 611af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6120e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6130e08270aSSushmita Susheelendra ret = -ENOMEM; 6140e08270aSSushmita Susheelendra goto fail; 6150e08270aSSushmita Susheelendra } 61610f76165SRob Clark 61710f76165SRob Clark update_inactive(msm_obj); 6180e08270aSSushmita Susheelendra } 6190e08270aSSushmita Susheelendra 6200e08270aSSushmita Susheelendra return msm_obj->vaddr; 6210e08270aSSushmita Susheelendra 6220e08270aSSushmita Susheelendra fail: 623e1e9db2cSRob Clark msm_obj->vmap_count--; 6240e08270aSSushmita Susheelendra return ERR_PTR(ret); 62518f23049SRob Clark } 62618f23049SRob Clark 627e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 628e4b87d22SRob Clark { 629e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 630e4b87d22SRob Clark } 631e4b87d22SRob Clark 632fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 633fad33f4bSRob Clark { 634e4b87d22SRob Clark void *ret; 635e4b87d22SRob Clark 636e4b87d22SRob Clark msm_gem_lock(obj); 637e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 638e4b87d22SRob Clark msm_gem_unlock(obj); 639e4b87d22SRob Clark 640e4b87d22SRob Clark return ret; 641fad33f4bSRob Clark } 642fad33f4bSRob Clark 643fad33f4bSRob Clark /* 644fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 645fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 646fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 647fad33f4bSRob Clark * active list. 648fad33f4bSRob Clark */ 649fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 650fad33f4bSRob Clark { 651fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 652fad33f4bSRob Clark } 653fad33f4bSRob Clark 654e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 65518f23049SRob Clark { 6560e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6570e08270aSSushmita Susheelendra 65890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 65990643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 660e4b87d22SRob Clark 6610e08270aSSushmita Susheelendra msm_obj->vmap_count--; 6624cd33c48SRob Clark } 6630e08270aSSushmita Susheelendra 6640e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 6654cd33c48SRob Clark { 666a6ae74c9SRob Clark msm_gem_lock(obj); 667e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 668a6ae74c9SRob Clark msm_gem_unlock(obj); 6694cd33c48SRob Clark } 6704cd33c48SRob Clark 6714cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 6724cd33c48SRob Clark * false or -errno. 6734cd33c48SRob Clark */ 6744cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 6754cd33c48SRob Clark { 6764cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 67768209390SRob Clark 678a6ae74c9SRob Clark msm_gem_lock(obj); 679c8afe684SRob Clark 680c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 681c8afe684SRob Clark msm_obj->madv = madv; 682c8afe684SRob Clark 6830e08270aSSushmita Susheelendra madv = msm_obj->madv; 6840e08270aSSushmita Susheelendra 6853edfa30fSRob Clark /* If the obj is inactive, we might need to move it 6863edfa30fSRob Clark * between inactive lists 6873edfa30fSRob Clark */ 6883edfa30fSRob Clark if (msm_obj->active_count == 0) 6893edfa30fSRob Clark update_inactive(msm_obj); 6903edfa30fSRob Clark 691a6ae74c9SRob Clark msm_gem_unlock(obj); 6920e08270aSSushmita Susheelendra 6930e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 694c8afe684SRob Clark } 695c8afe684SRob Clark 696599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 69768209390SRob Clark { 69868209390SRob Clark struct drm_device *dev = obj->dev; 69968209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 70068209390SRob Clark 70181d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 70290643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 70368209390SRob Clark 70420d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 70520d0ae2fSRob Clark put_iova_spaces(obj, true); 7060e08270aSSushmita Susheelendra 707599089c6SRob Clark msm_gem_vunmap(obj); 70868209390SRob Clark 70981d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 71081d4d597SRob Clark 71168209390SRob Clark put_pages(obj); 71268209390SRob Clark 7139b73bde3SIskren Chernev put_iova_vmas(obj); 7149b73bde3SIskren Chernev 71568209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 71625ed38b3SRob Clark update_inactive(msm_obj); 71768209390SRob Clark 71868209390SRob Clark drm_gem_free_mmap_offset(obj); 71968209390SRob Clark 72068209390SRob Clark /* Our goal here is to return as much of the memory as 72168209390SRob Clark * is possible back to the system as we are called from OOM. 72268209390SRob Clark * To do this we must instruct the shmfs to drop all of its 72368209390SRob Clark * backing pages, *now*. 72468209390SRob Clark */ 72568209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 72668209390SRob Clark 72768209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 72868209390SRob Clark 0, (loff_t)-1); 72968209390SRob Clark } 73068209390SRob Clark 73137c68900SLee Jones /* 73263f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 73363f17ef8SRob Clark */ 73463f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 73563f17ef8SRob Clark { 73663f17ef8SRob Clark struct drm_device *dev = obj->dev; 73763f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 73863f17ef8SRob Clark 73963f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 74063f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 74163f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 74263f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 74363f17ef8SRob Clark 74463f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 74563f17ef8SRob Clark put_iova_spaces(obj, false); 74663f17ef8SRob Clark 74763f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 74863f17ef8SRob Clark 74963f17ef8SRob Clark put_pages(obj); 75063f17ef8SRob Clark 75163f17ef8SRob Clark update_inactive(msm_obj); 75263f17ef8SRob Clark } 75363f17ef8SRob Clark 754599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 755e1e9db2cSRob Clark { 756e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 757e1e9db2cSRob Clark 75890643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7590e08270aSSushmita Susheelendra 76090643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 761e1e9db2cSRob Clark return; 762e1e9db2cSRob Clark 763e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 764e1e9db2cSRob Clark msm_obj->vaddr = NULL; 765e1e9db2cSRob Clark } 766e1e9db2cSRob Clark 7679d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 7687198e6b0SRob Clark { 7697198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 770d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 771d984457bSRob Clark 772d984457bSRob Clark might_sleep(); 77390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 77490643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 77590643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 7769d8baa2bSAkhil P Oommen 777ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 778d984457bSRob Clark mutex_lock(&priv->mm_lock); 77964fcbde7SRob Clark if (msm_obj->evictable) 78064fcbde7SRob Clark mark_unevictable(msm_obj); 781a83cc4fbSBaokun Li list_move_tail(&msm_obj->mm_list, &gpu->active_list); 782d984457bSRob Clark mutex_unlock(&priv->mm_lock); 7837198e6b0SRob Clark } 7849d8baa2bSAkhil P Oommen } 7857198e6b0SRob Clark 7869d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 7877198e6b0SRob Clark { 7887198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7897198e6b0SRob Clark 790d984457bSRob Clark might_sleep(); 79190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 7927198e6b0SRob Clark 793ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 7943edfa30fSRob Clark update_inactive(msm_obj); 7957198e6b0SRob Clark } 7969d8baa2bSAkhil P Oommen } 7977198e6b0SRob Clark 7983edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 7993edfa30fSRob Clark { 8003edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8013edfa30fSRob Clark 80264fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 80364fcbde7SRob Clark 80464fcbde7SRob Clark if (msm_obj->active_count != 0) 80564fcbde7SRob Clark return; 80664fcbde7SRob Clark 8073edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8083edfa30fSRob Clark 809cc8a4d5aSRob Clark if (msm_obj->dontneed) 8100054eeb7SRob Clark mark_unpurgeable(msm_obj); 81164fcbde7SRob Clark if (msm_obj->evictable) 81264fcbde7SRob Clark mark_unevictable(msm_obj); 813cc8a4d5aSRob Clark 814cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 81564fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8163edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 81764fcbde7SRob Clark mark_evictable(msm_obj); 818cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8193edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8200054eeb7SRob Clark mark_purgeable(msm_obj); 821cc8a4d5aSRob Clark } else { 82264fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 82364fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 824cc8a4d5aSRob Clark } 8253edfa30fSRob Clark 8263edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 8273edfa30fSRob Clark } 8283edfa30fSRob Clark 829ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 830ba00c3f2SRob Clark { 831b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 832f755e227SChris Wilson unsigned long remain = 833f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 834f755e227SChris Wilson long ret; 835b6295f9aSRob Clark 836d3fae3b3SChristian König ret = dma_resv_wait_timeout(obj->resv, write, true, remain); 837f755e227SChris Wilson if (ret == 0) 838f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 839f755e227SChris Wilson else if (ret < 0) 840f755e227SChris Wilson return ret; 841ba00c3f2SRob Clark 8427198e6b0SRob Clark /* TODO cache maintenance */ 8437198e6b0SRob Clark 844b6295f9aSRob Clark return 0; 8457198e6b0SRob Clark } 8467198e6b0SRob Clark 8477198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 8487198e6b0SRob Clark { 8497198e6b0SRob Clark /* TODO cache maintenance */ 850c8afe684SRob Clark return 0; 851c8afe684SRob Clark } 852c8afe684SRob Clark 853c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 854528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 855528107c8SRob Clark struct msm_gem_stats *stats) 856c8afe684SRob Clark { 857c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 85852791eeeSChristian König struct dma_resv *robj = obj->resv; 8594b85f7f5SRob Clark struct msm_gem_vma *vma; 860c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 8614cd33c48SRob Clark const char *madv; 862c8afe684SRob Clark 863a6ae74c9SRob Clark msm_gem_lock(obj); 864b6295f9aSRob Clark 865528107c8SRob Clark stats->all.count++; 866528107c8SRob Clark stats->all.size += obj->size; 867528107c8SRob Clark 868528107c8SRob Clark if (is_active(msm_obj)) { 869528107c8SRob Clark stats->active.count++; 870528107c8SRob Clark stats->active.size += obj->size; 871528107c8SRob Clark } 872528107c8SRob Clark 873f48f3563SRob Clark if (msm_obj->pages) { 874f48f3563SRob Clark stats->resident.count++; 875f48f3563SRob Clark stats->resident.size += obj->size; 876f48f3563SRob Clark } 877f48f3563SRob Clark 8784cd33c48SRob Clark switch (msm_obj->madv) { 8794cd33c48SRob Clark case __MSM_MADV_PURGED: 880528107c8SRob Clark stats->purged.count++; 881528107c8SRob Clark stats->purged.size += obj->size; 8824cd33c48SRob Clark madv = " purged"; 8834cd33c48SRob Clark break; 8844cd33c48SRob Clark case MSM_MADV_DONTNEED: 8850054eeb7SRob Clark stats->purgeable.count++; 8860054eeb7SRob Clark stats->purgeable.size += obj->size; 8874cd33c48SRob Clark madv = " purgeable"; 8884cd33c48SRob Clark break; 8894cd33c48SRob Clark case MSM_MADV_WILLNEED: 8904cd33c48SRob Clark default: 8914cd33c48SRob Clark madv = ""; 8924cd33c48SRob Clark break; 8934cd33c48SRob Clark } 8944cd33c48SRob Clark 895575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 8967198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 8972c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 898667ce33eSRob Clark off, msm_obj->vaddr); 899667ce33eSRob Clark 9000815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 901667ce33eSRob Clark 902575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 903575f0485SJordan Crouse 904575f0485SJordan Crouse seq_puts(m, " vmas:"); 905575f0485SJordan Crouse 90625faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 90725faf2f2SRob Clark const char *name, *comm; 90825faf2f2SRob Clark if (vma->aspace) { 90925faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 91025faf2f2SRob Clark struct task_struct *task = 91125faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 91225faf2f2SRob Clark if (task) { 91325faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 91425faf2f2SRob Clark } else { 91525faf2f2SRob Clark comm = NULL; 91625faf2f2SRob Clark } 91725faf2f2SRob Clark name = aspace->name; 91825faf2f2SRob Clark } else { 91925faf2f2SRob Clark name = comm = NULL; 92025faf2f2SRob Clark } 92125faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 92225faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 92325faf2f2SRob Clark vma->aspace, vma->iova, 92425faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 925ca35ab2aSRob Clark msm_gem_vma_inuse(vma)); 92625faf2f2SRob Clark kfree(comm); 92725faf2f2SRob Clark } 928575f0485SJordan Crouse 929575f0485SJordan Crouse seq_puts(m, "\n"); 930575f0485SJordan Crouse } 931b6295f9aSRob Clark 932f19ee2f3SChristian König dma_resv_describe(robj, m); 933a6ae74c9SRob Clark msm_gem_unlock(obj); 934c8afe684SRob Clark } 935c8afe684SRob Clark 936c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 937c8afe684SRob Clark { 938528107c8SRob Clark struct msm_gem_stats stats = {}; 939c8afe684SRob Clark struct msm_gem_object *msm_obj; 940c8afe684SRob Clark 9410815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 9426ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 943c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 944575f0485SJordan Crouse seq_puts(m, " "); 945528107c8SRob Clark msm_gem_describe(obj, m, &stats); 946c8afe684SRob Clark } 947c8afe684SRob Clark 948528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 949528107c8SRob Clark stats.all.count, stats.all.size); 950528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 951528107c8SRob Clark stats.active.count, stats.active.size); 952f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 953f48f3563SRob Clark stats.resident.count, stats.resident.size); 954f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 9550054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 956528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 957528107c8SRob Clark stats.purged.count, stats.purged.size); 958c8afe684SRob Clark } 959c8afe684SRob Clark #endif 960c8afe684SRob Clark 961030af2b0SRob Clark /* don't call directly! Use drm_gem_object_put() */ 962c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 963c8afe684SRob Clark { 964c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 96548e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 96648e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 96748e7f183SKristian H. Kristensen 9686ed0897cSRob Clark mutex_lock(&priv->obj_lock); 9696ed0897cSRob Clark list_del(&msm_obj->node); 9706ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 9716ed0897cSRob Clark 972d984457bSRob Clark mutex_lock(&priv->mm_lock); 973cc8a4d5aSRob Clark if (msm_obj->dontneed) 9740054eeb7SRob Clark mark_unpurgeable(msm_obj); 975c8afe684SRob Clark list_del(&msm_obj->mm_list); 976d984457bSRob Clark mutex_unlock(&priv->mm_lock); 977c8afe684SRob Clark 978a6ae74c9SRob Clark msm_gem_lock(obj); 979c8afe684SRob Clark 980c8afe684SRob Clark /* object should not be on active list: */ 98190643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 982c8afe684SRob Clark 98320d0ae2fSRob Clark put_iova_spaces(obj, true); 984c8afe684SRob Clark 98505b84911SRob Clark if (obj->import_attach) { 98690643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 98705b84911SRob Clark 98805b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 98905b84911SRob Clark * ours, just free the array we allocated: 99005b84911SRob Clark */ 9912098105eSMichal Hocko kvfree(msm_obj->pages); 99205b84911SRob Clark 99357f04815SRob Clark put_iova_vmas(obj); 99457f04815SRob Clark 9956c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 9966c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 9976c0e3ea2SRob Clark */ 9986c0e3ea2SRob Clark msm_gem_unlock(obj); 9996c0e3ea2SRob Clark 1000f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 100105b84911SRob Clark } else { 1002599089c6SRob Clark msm_gem_vunmap(obj); 1003c8afe684SRob Clark put_pages(obj); 100457f04815SRob Clark put_iova_vmas(obj); 10056c0e3ea2SRob Clark msm_gem_unlock(obj); 100605b84911SRob Clark } 1007c8afe684SRob Clark 1008c8afe684SRob Clark drm_gem_object_release(obj); 1009c8afe684SRob Clark 1010c8afe684SRob Clark kfree(msm_obj); 1011c8afe684SRob Clark } 1012c8afe684SRob Clark 1013510410bfSThomas Zimmermann static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 1014510410bfSThomas Zimmermann { 1015510410bfSThomas Zimmermann struct msm_gem_object *msm_obj = to_msm_bo(obj); 1016510410bfSThomas Zimmermann 10173466d9e2SDouglas Anderson vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; 1018510410bfSThomas Zimmermann vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 1019510410bfSThomas Zimmermann 1020510410bfSThomas Zimmermann return 0; 1021510410bfSThomas Zimmermann } 1022510410bfSThomas Zimmermann 1023c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1024c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 10250815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 10260815d774SJordan Crouse char *name) 1027c8afe684SRob Clark { 1028c8afe684SRob Clark struct drm_gem_object *obj; 1029c8afe684SRob Clark int ret; 1030c8afe684SRob Clark 1031c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1032c8afe684SRob Clark 1033c8afe684SRob Clark if (IS_ERR(obj)) 1034c8afe684SRob Clark return PTR_ERR(obj); 1035c8afe684SRob Clark 10360815d774SJordan Crouse if (name) 10370815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 10380815d774SJordan Crouse 1039c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1040c8afe684SRob Clark 1041c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1042f7d33950SEmil Velikov drm_gem_object_put(obj); 1043c8afe684SRob Clark 1044c8afe684SRob Clark return ret; 1045c8afe684SRob Clark } 1046c8afe684SRob Clark 10473c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 10483c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 10493c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 10503c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 10513c9edd9cSThomas Zimmermann }; 10523c9edd9cSThomas Zimmermann 10533c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 10543c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 10553c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 10563c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 10573c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 10583c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 10593c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 1060510410bfSThomas Zimmermann .mmap = msm_gem_object_mmap, 10613c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 10623c9edd9cSThomas Zimmermann }; 10633c9edd9cSThomas Zimmermann 106405b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 106505b84911SRob Clark uint32_t size, uint32_t flags, 10663cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1067c8afe684SRob Clark { 1068d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1069c8afe684SRob Clark struct msm_gem_object *msm_obj; 1070c8afe684SRob Clark 1071c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1072c8afe684SRob Clark case MSM_BO_UNCACHED: 1073c8afe684SRob Clark case MSM_BO_CACHED: 1074c8afe684SRob Clark case MSM_BO_WC: 1075c8afe684SRob Clark break; 1076d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1077d12e3390SJonathan Marek if (priv->has_cached_coherent) 1078d12e3390SJonathan Marek break; 1079e181ad43SGustavo A. R. Silva fallthrough; 1080c8afe684SRob Clark default: 10812d1d175aSRob Clark DRM_DEV_DEBUG(dev->dev, "invalid cache flag: %x\n", 1082c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 108305b84911SRob Clark return -EINVAL; 1084c8afe684SRob Clark } 1085c8afe684SRob Clark 1086667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 108705b84911SRob Clark if (!msm_obj) 108805b84911SRob Clark return -ENOMEM; 1089c8afe684SRob Clark 1090c8afe684SRob Clark msm_obj->flags = flags; 10914cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1092c8afe684SRob Clark 1093027d052aSDan Carpenter INIT_LIST_HEAD(&msm_obj->node); 10944b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 10954b85f7f5SRob Clark 109605b84911SRob Clark *obj = &msm_obj->base; 10973c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 109805b84911SRob Clark 109905b84911SRob Clark return 0; 110005b84911SRob Clark } 110105b84911SRob Clark 1102030af2b0SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags) 110305b84911SRob Clark { 1104f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 11053cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1106871d812aSRob Clark struct drm_gem_object *obj = NULL; 1107f4839bd5SRob Clark bool use_vram = false; 110805b84911SRob Clark int ret; 110905b84911SRob Clark 111005b84911SRob Clark size = PAGE_ALIGN(size); 111105b84911SRob Clark 1112c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1113f4839bd5SRob Clark use_vram = true; 111486f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1115f4839bd5SRob Clark use_vram = true; 1116f4839bd5SRob Clark 111790643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1118f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1119f4839bd5SRob Clark 11201a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 11211a5dff5dSJordan Crouse * infrastructure grumpy 11221a5dff5dSJordan Crouse */ 11231a5dff5dSJordan Crouse if (size == 0) 11241a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 11251a5dff5dSJordan Crouse 11263cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 112705b84911SRob Clark if (ret) 11282203bd0eSDan Carpenter return ERR_PTR(ret); 112905b84911SRob Clark 11303cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 11313cbdc8d8SAkhil P Oommen 1132f4839bd5SRob Clark if (use_vram) { 11334b85f7f5SRob Clark struct msm_gem_vma *vma; 1134f4839bd5SRob Clark struct page **pages; 1135b3949a9aSHans Verkuil 1136a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1137a694ffedSIskren Chernev 1138a6ae74c9SRob Clark msm_gem_lock(obj); 1139f4839bd5SRob Clark 11404b85f7f5SRob Clark vma = add_vma(obj, NULL); 1141a6ae74c9SRob Clark msm_gem_unlock(obj); 11424b85f7f5SRob Clark if (IS_ERR(vma)) { 11434b85f7f5SRob Clark ret = PTR_ERR(vma); 11444b85f7f5SRob Clark goto fail; 11454b85f7f5SRob Clark } 11464b85f7f5SRob Clark 11474b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 11484b85f7f5SRob Clark 114945f56690SAlexey Minnekhanov /* Call chain get_pages() -> update_inactive() tries to 115045f56690SAlexey Minnekhanov * access msm_obj->mm_list, but it is not initialized yet. 115145f56690SAlexey Minnekhanov * To avoid NULL pointer dereference error, initialize 115245f56690SAlexey Minnekhanov * mm_list to be empty. 115345f56690SAlexey Minnekhanov */ 115445f56690SAlexey Minnekhanov INIT_LIST_HEAD(&msm_obj->mm_list); 115545f56690SAlexey Minnekhanov 115607fcad0dSIskren Chernev msm_gem_lock(obj); 1157f4839bd5SRob Clark pages = get_pages(obj); 115807fcad0dSIskren Chernev msm_gem_unlock(obj); 1159f4839bd5SRob Clark if (IS_ERR(pages)) { 1160f4839bd5SRob Clark ret = PTR_ERR(pages); 1161f4839bd5SRob Clark goto fail; 1162f4839bd5SRob Clark } 11634b85f7f5SRob Clark 11644b85f7f5SRob Clark vma->iova = physaddr(obj); 1165f4839bd5SRob Clark } else { 116605b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 116705b84911SRob Clark if (ret) 116805b84911SRob Clark goto fail; 11690abdba47SLucas Stach /* 11700abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 11710abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 11720abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 11730abdba47SLucas Stach * expected if you're going to pin these pages. 11740abdba47SLucas Stach */ 11750abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1176871d812aSRob Clark } 117705b84911SRob Clark 1178d984457bSRob Clark mutex_lock(&priv->mm_lock); 117964fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1180d984457bSRob Clark mutex_unlock(&priv->mm_lock); 11813cbdc8d8SAkhil P Oommen 11826ed0897cSRob Clark mutex_lock(&priv->obj_lock); 11836ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 11846ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 11856ed0897cSRob Clark 118605b84911SRob Clark return obj; 118705b84911SRob Clark 118805b84911SRob Clark fail: 1189f7d33950SEmil Velikov drm_gem_object_put(obj); 119005b84911SRob Clark return ERR_PTR(ret); 119105b84911SRob Clark } 119205b84911SRob Clark 119305b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 119479f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 119505b84911SRob Clark { 11963cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 119705b84911SRob Clark struct msm_gem_object *msm_obj; 119805b84911SRob Clark struct drm_gem_object *obj; 119979f0e202SRob Clark uint32_t size; 120005b84911SRob Clark int ret, npages; 120105b84911SRob Clark 1202871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1203c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 12046a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1205871d812aSRob Clark return ERR_PTR(-EINVAL); 1206871d812aSRob Clark } 1207871d812aSRob Clark 120879f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 120905b84911SRob Clark 12103cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 121105b84911SRob Clark if (ret) 12122203bd0eSDan Carpenter return ERR_PTR(ret); 121305b84911SRob Clark 121405b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 121505b84911SRob Clark 121605b84911SRob Clark npages = size / PAGE_SIZE; 121705b84911SRob Clark 121805b84911SRob Clark msm_obj = to_msm_bo(obj); 1219a6ae74c9SRob Clark msm_gem_lock(obj); 122005b84911SRob Clark msm_obj->sgt = sgt; 12212098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 122205b84911SRob Clark if (!msm_obj->pages) { 1223a6ae74c9SRob Clark msm_gem_unlock(obj); 122405b84911SRob Clark ret = -ENOMEM; 122505b84911SRob Clark goto fail; 122605b84911SRob Clark } 122705b84911SRob Clark 1228c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 12290e08270aSSushmita Susheelendra if (ret) { 1230a6ae74c9SRob Clark msm_gem_unlock(obj); 123105b84911SRob Clark goto fail; 12320e08270aSSushmita Susheelendra } 123305b84911SRob Clark 1234a6ae74c9SRob Clark msm_gem_unlock(obj); 12353cbdc8d8SAkhil P Oommen 1236d984457bSRob Clark mutex_lock(&priv->mm_lock); 123764fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1238d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12393cbdc8d8SAkhil P Oommen 12406ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12416ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12426ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12436ed0897cSRob Clark 1244c8afe684SRob Clark return obj; 1245c8afe684SRob Clark 1246c8afe684SRob Clark fail: 1247f7d33950SEmil Velikov drm_gem_object_put(obj); 1248c8afe684SRob Clark return ERR_PTR(ret); 1249c8afe684SRob Clark } 12508223286dSJordan Crouse 1251030af2b0SRob Clark void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 12528223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 1253030af2b0SRob Clark struct drm_gem_object **bo, uint64_t *iova) 12548223286dSJordan Crouse { 12558223286dSJordan Crouse void *vaddr; 1256030af2b0SRob Clark struct drm_gem_object *obj = msm_gem_new(dev, size, flags); 12578223286dSJordan Crouse int ret; 12588223286dSJordan Crouse 12598223286dSJordan Crouse if (IS_ERR(obj)) 12608223286dSJordan Crouse return ERR_CAST(obj); 12618223286dSJordan Crouse 12628223286dSJordan Crouse if (iova) { 12639fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 126493f7abf1SJordan Crouse if (ret) 126593f7abf1SJordan Crouse goto err; 12668223286dSJordan Crouse } 12678223286dSJordan Crouse 12688223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1269c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 12707ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 127193f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 127293f7abf1SJordan Crouse goto err; 12738223286dSJordan Crouse } 12748223286dSJordan Crouse 12758223286dSJordan Crouse if (bo) 12768223286dSJordan Crouse *bo = obj; 12778223286dSJordan Crouse 12788223286dSJordan Crouse return vaddr; 127993f7abf1SJordan Crouse err: 1280f7d33950SEmil Velikov drm_gem_object_put(obj); 128193f7abf1SJordan Crouse 128293f7abf1SJordan Crouse return ERR_PTR(ret); 128393f7abf1SJordan Crouse 12848223286dSJordan Crouse } 12858223286dSJordan Crouse 12861e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 1287030af2b0SRob Clark struct msm_gem_address_space *aspace) 12881e29dff0SJordan Crouse { 12891e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 12901e29dff0SJordan Crouse return; 12911e29dff0SJordan Crouse 12921e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 12937ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 1294f7d33950SEmil Velikov drm_gem_object_put(bo); 12951e29dff0SJordan Crouse } 12960815d774SJordan Crouse 12970815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 12980815d774SJordan Crouse { 12990815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 13000815d774SJordan Crouse va_list ap; 13010815d774SJordan Crouse 13020815d774SJordan Crouse if (!fmt) 13030815d774SJordan Crouse return; 13040815d774SJordan Crouse 13050815d774SJordan Crouse va_start(ap, fmt); 13060815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 13070815d774SJordan Crouse va_end(ap); 13080815d774SJordan Crouse } 1309