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> 8c8afe684SRob Clark #include <linux/spinlock.h> 9c8afe684SRob Clark #include <linux/shmem_fs.h> 1005b84911SRob Clark #include <linux/dma-buf.h> 1101c8f1c4SDan Williams #include <linux/pfn_t.h> 12c8afe684SRob Clark 13feea39a8SSam Ravnborg #include <drm/drm_prime.h> 14feea39a8SSam Ravnborg 15c8afe684SRob Clark #include "msm_drv.h" 16fde5de6cSRob Clark #include "msm_fence.h" 17c8afe684SRob Clark #include "msm_gem.h" 187198e6b0SRob Clark #include "msm_gpu.h" 19871d812aSRob Clark #include "msm_mmu.h" 20c8afe684SRob Clark 213edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj); 220e08270aSSushmita Susheelendra 23871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 24871d812aSRob Clark { 25871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 26871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 27871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 28871d812aSRob Clark priv->vram.paddr; 29871d812aSRob Clark } 30871d812aSRob Clark 31072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 32072f1f91SRob Clark { 33072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 34072f1f91SRob Clark return !msm_obj->vram_node; 35072f1f91SRob Clark } 36072f1f91SRob Clark 373de433c5SRob Clark /* 383de433c5SRob Clark * Cache sync.. this is a bit over-complicated, to fit dma-mapping 393de433c5SRob Clark * API. Really GPU cache is out of scope here (handled on cmdstream) 403de433c5SRob Clark * and all we need to do is invalidate newly allocated pages before 413de433c5SRob Clark * mapping to CPU as uncached/writecombine. 423de433c5SRob Clark * 433de433c5SRob Clark * On top of this, we have the added headache, that depending on 443de433c5SRob Clark * display generation, the display's iommu may be wired up to either 453de433c5SRob Clark * the toplevel drm device (mdss), or to the mdp sub-node, meaning 463de433c5SRob Clark * that here we either have dma-direct or iommu ops. 473de433c5SRob Clark * 483de433c5SRob Clark * Let this be a cautionary tail of abstraction gone wrong. 493de433c5SRob Clark */ 503de433c5SRob Clark 513de433c5SRob Clark static void sync_for_device(struct msm_gem_object *msm_obj) 523de433c5SRob Clark { 533de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 543de433c5SRob Clark 557690a33fSMarek Szyprowski dma_map_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 563de433c5SRob Clark } 573de433c5SRob Clark 583de433c5SRob Clark static void sync_for_cpu(struct msm_gem_object *msm_obj) 593de433c5SRob Clark { 603de433c5SRob Clark struct device *dev = msm_obj->base.dev->dev; 613de433c5SRob Clark 627690a33fSMarek Szyprowski dma_unmap_sgtable(dev, msm_obj->sgt, DMA_BIDIRECTIONAL, 0); 633de433c5SRob Clark } 643de433c5SRob Clark 65871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 660e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 67871d812aSRob Clark { 68871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 70871d812aSRob Clark dma_addr_t paddr; 71871d812aSRob Clark struct page **p; 72871d812aSRob Clark int ret, i; 73871d812aSRob Clark 742098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 75871d812aSRob Clark if (!p) 76871d812aSRob Clark return ERR_PTR(-ENOMEM); 77871d812aSRob Clark 780e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 794e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 800e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 81871d812aSRob Clark if (ret) { 822098105eSMichal Hocko kvfree(p); 83871d812aSRob Clark return ERR_PTR(ret); 84871d812aSRob Clark } 85871d812aSRob Clark 86871d812aSRob Clark paddr = physaddr(obj); 87871d812aSRob Clark for (i = 0; i < npages; i++) { 88871d812aSRob Clark p[i] = phys_to_page(paddr); 89871d812aSRob Clark paddr += PAGE_SIZE; 90871d812aSRob Clark } 91871d812aSRob Clark 92871d812aSRob Clark return p; 93871d812aSRob Clark } 94c8afe684SRob Clark 95c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 96c8afe684SRob Clark { 97c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 98c8afe684SRob Clark 9990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 10007fcad0dSIskren Chernev 101c8afe684SRob Clark if (!msm_obj->pages) { 102c8afe684SRob Clark struct drm_device *dev = obj->dev; 103871d812aSRob Clark struct page **p; 104c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 105c8afe684SRob Clark 106072f1f91SRob Clark if (use_pages(obj)) 1070cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 108871d812aSRob Clark else 109871d812aSRob Clark p = get_pages_vram(obj, npages); 110871d812aSRob Clark 111c8afe684SRob Clark if (IS_ERR(p)) { 1126a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 113c8afe684SRob Clark PTR_ERR(p)); 114c8afe684SRob Clark return p; 115c8afe684SRob Clark } 116c8afe684SRob Clark 11762e3a3e3SPrakash Kamliya msm_obj->pages = p; 11862e3a3e3SPrakash Kamliya 119707d561fSGerd Hoffmann msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages); 1201f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 12162e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 122c8afe684SRob Clark 1236a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 12462e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 12562e3a3e3SPrakash Kamliya return ptr; 12662e3a3e3SPrakash Kamliya } 127c8afe684SRob Clark 128c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 129c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 130c8afe684SRob Clark */ 131c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 1323de433c5SRob Clark sync_for_device(msm_obj); 13364fcbde7SRob Clark 13464fcbde7SRob Clark GEM_WARN_ON(msm_obj->active_count); 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 { 216af9b3547SJonathan Marek if (msm_obj->flags & MSM_BO_WC) 217af9b3547SJonathan Marek return pgprot_writecombine(prot); 218af9b3547SJonathan Marek if (msm_obj->flags & MSM_BO_UNCACHED) 219af9b3547SJonathan Marek return pgprot_noncached(prot); 220af9b3547SJonathan Marek return prot; 221af9b3547SJonathan Marek } 222af9b3547SJonathan Marek 223c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 224c8afe684SRob Clark struct vm_area_struct *vma) 225c8afe684SRob Clark { 226c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 227c8afe684SRob Clark 228c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 229c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 230af9b3547SJonathan Marek vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); 231c8afe684SRob Clark 232c8afe684SRob Clark return 0; 233c8afe684SRob Clark } 234c8afe684SRob Clark 235c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 236c8afe684SRob Clark { 237c8afe684SRob Clark int ret; 238c8afe684SRob Clark 239c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 240c8afe684SRob Clark if (ret) { 241c8afe684SRob Clark DBG("mmap failed: %d", ret); 242c8afe684SRob Clark return ret; 243c8afe684SRob Clark } 244c8afe684SRob Clark 245c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 246c8afe684SRob Clark } 247c8afe684SRob Clark 2483c9edd9cSThomas Zimmermann static vm_fault_t msm_gem_fault(struct vm_fault *vmf) 249c8afe684SRob Clark { 25011bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 251c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2520e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 253c8afe684SRob Clark struct page **pages; 254c8afe684SRob Clark unsigned long pfn; 255c8afe684SRob Clark pgoff_t pgoff; 256a5f74ec7SSouptick Joarder int err; 257a5f74ec7SSouptick Joarder vm_fault_t ret; 258c8afe684SRob Clark 2590e08270aSSushmita Susheelendra /* 2600e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2610e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 262d78d383aSRob Clark */ 263a6ae74c9SRob Clark err = msm_gem_lock_interruptible(obj); 264a5f74ec7SSouptick Joarder if (err) { 265a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 266c8afe684SRob Clark goto out; 267a5f74ec7SSouptick Joarder } 268c8afe684SRob Clark 26990643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 270a6ae74c9SRob Clark msm_gem_unlock(obj); 2710e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2720e08270aSSushmita Susheelendra } 2730e08270aSSushmita Susheelendra 274c8afe684SRob Clark /* make sure we have pages attached now */ 275c8afe684SRob Clark pages = get_pages(obj); 276c8afe684SRob Clark if (IS_ERR(pages)) { 277a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 278c8afe684SRob Clark goto out_unlock; 279c8afe684SRob Clark } 280c8afe684SRob Clark 281c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2821a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 283c8afe684SRob Clark 284871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 285c8afe684SRob Clark 2861a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 287c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 288c8afe684SRob Clark 289a5f74ec7SSouptick Joarder ret = vmf_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 290c8afe684SRob Clark out_unlock: 291a6ae74c9SRob Clark msm_gem_unlock(obj); 292c8afe684SRob Clark out: 293a5f74ec7SSouptick Joarder return ret; 294c8afe684SRob Clark } 295c8afe684SRob Clark 296c8afe684SRob Clark /** get mmap offset */ 297c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 298c8afe684SRob Clark { 299c8afe684SRob Clark struct drm_device *dev = obj->dev; 300c8afe684SRob Clark int ret; 301c8afe684SRob Clark 30290643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 303c8afe684SRob Clark 304c8afe684SRob Clark /* Make it mmapable */ 305c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 306c8afe684SRob Clark 307c8afe684SRob Clark if (ret) { 3086a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 309c8afe684SRob Clark return 0; 310c8afe684SRob Clark } 311c8afe684SRob Clark 312c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 313c8afe684SRob Clark } 314c8afe684SRob Clark 315c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 316c8afe684SRob Clark { 317c8afe684SRob Clark uint64_t offset; 3180e08270aSSushmita Susheelendra 319a6ae74c9SRob Clark msm_gem_lock(obj); 320c8afe684SRob Clark offset = mmap_offset(obj); 321a6ae74c9SRob Clark msm_gem_unlock(obj); 322c8afe684SRob Clark return offset; 323c8afe684SRob Clark } 324c8afe684SRob Clark 3254b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3264b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3274b85f7f5SRob Clark { 3284b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3294b85f7f5SRob Clark struct msm_gem_vma *vma; 3304b85f7f5SRob Clark 33190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3320e08270aSSushmita Susheelendra 3334b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3344b85f7f5SRob Clark if (!vma) 3354b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3364b85f7f5SRob Clark 3374b85f7f5SRob Clark vma->aspace = aspace; 3384b85f7f5SRob Clark 3394b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3404b85f7f5SRob Clark 3414b85f7f5SRob Clark return vma; 3424b85f7f5SRob Clark } 3434b85f7f5SRob Clark 3444b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3454b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3464b85f7f5SRob Clark { 3474b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3484b85f7f5SRob Clark struct msm_gem_vma *vma; 3494b85f7f5SRob Clark 35090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3514b85f7f5SRob Clark 3524b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3534b85f7f5SRob Clark if (vma->aspace == aspace) 3544b85f7f5SRob Clark return vma; 3554b85f7f5SRob Clark } 3564b85f7f5SRob Clark 3574b85f7f5SRob Clark return NULL; 3584b85f7f5SRob Clark } 3594b85f7f5SRob Clark 3604b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3614b85f7f5SRob Clark { 3624b85f7f5SRob Clark if (!vma) 3634b85f7f5SRob Clark return; 3644b85f7f5SRob Clark 3654b85f7f5SRob Clark list_del(&vma->list); 3664b85f7f5SRob Clark kfree(vma); 3674b85f7f5SRob Clark } 3684b85f7f5SRob Clark 36920d0ae2fSRob Clark /** 37020d0ae2fSRob Clark * If close is true, this also closes the VMA (releasing the allocated 37120d0ae2fSRob Clark * iova range) in addition to removing the iommu mapping. In the eviction 37220d0ae2fSRob Clark * case (!close), we keep the iova allocated, but only remove the iommu 37320d0ae2fSRob Clark * mapping. 37420d0ae2fSRob Clark */ 3754fe5f65eSRob Clark static void 37620d0ae2fSRob Clark put_iova_spaces(struct drm_gem_object *obj, bool close) 3774fe5f65eSRob Clark { 3784fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3799b73bde3SIskren Chernev struct msm_gem_vma *vma; 3804fe5f65eSRob Clark 38190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 3824fe5f65eSRob Clark 3839b73bde3SIskren Chernev list_for_each_entry(vma, &msm_obj->vmas, list) { 384d67f1b6dSBrian Masney if (vma->aspace) { 3857ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 38620d0ae2fSRob Clark if (close) 3877ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 388d67f1b6dSBrian Masney } 3899b73bde3SIskren Chernev } 3909b73bde3SIskren Chernev } 3919b73bde3SIskren Chernev 3929b73bde3SIskren Chernev /* Called with msm_obj locked */ 3939b73bde3SIskren Chernev static void 3949b73bde3SIskren Chernev put_iova_vmas(struct drm_gem_object *obj) 3954fe5f65eSRob Clark { 3964fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3974fe5f65eSRob Clark struct msm_gem_vma *vma, *tmp; 3984fe5f65eSRob Clark 39990643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 4004fe5f65eSRob Clark 4014fe5f65eSRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 4024b85f7f5SRob Clark del_vma(vma); 4034fe5f65eSRob Clark } 4044fe5f65eSRob Clark } 4054fe5f65eSRob Clark 4068117e5e5SRob Clark static int get_iova_locked(struct drm_gem_object *obj, 407d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 408d3b8877eSJonathan Marek u64 range_start, u64 range_end) 409c8afe684SRob Clark { 4104b85f7f5SRob Clark struct msm_gem_vma *vma; 411c8afe684SRob Clark int ret = 0; 412c8afe684SRob Clark 41390643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 414cb1e3818SRob Clark 4154b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 416871d812aSRob Clark 4174b85f7f5SRob Clark if (!vma) { 4184b85f7f5SRob Clark vma = add_vma(obj, aspace); 419c0ee9794SJordan Crouse if (IS_ERR(vma)) 420c0ee9794SJordan Crouse return PTR_ERR(vma); 4214b85f7f5SRob Clark 422d3b8877eSJonathan Marek ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT, 423d3b8877eSJonathan Marek range_start, range_end); 424c0ee9794SJordan Crouse if (ret) { 425c0ee9794SJordan Crouse del_vma(vma); 426c0ee9794SJordan Crouse return ret; 427c8afe684SRob Clark } 4284b85f7f5SRob Clark } 4294b85f7f5SRob Clark 4304b85f7f5SRob Clark *iova = vma->iova; 4314b85f7f5SRob Clark return 0; 432c0ee9794SJordan Crouse } 4334b85f7f5SRob Clark 434c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 435c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 436c0ee9794SJordan Crouse { 437c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 438c0ee9794SJordan Crouse struct msm_gem_vma *vma; 439c0ee9794SJordan Crouse struct page **pages; 44064fcbde7SRob Clark int ret, prot = IOMMU_READ; 441bbc2cd07SRob Clark 442bbc2cd07SRob Clark if (!(msm_obj->flags & MSM_BO_GPU_READONLY)) 443bbc2cd07SRob Clark prot |= IOMMU_WRITE; 444c0ee9794SJordan Crouse 4450b462d7aSJonathan Marek if (msm_obj->flags & MSM_BO_MAP_PRIV) 4460b462d7aSJonathan Marek prot |= IOMMU_PRIV; 4470b462d7aSJonathan Marek 448*d12e3390SJonathan Marek if (msm_obj->flags & MSM_BO_CACHED_COHERENT) 449*d12e3390SJonathan Marek prot |= IOMMU_CACHE; 450*d12e3390SJonathan Marek 45190643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 452c0ee9794SJordan Crouse 45390643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 454c0ee9794SJordan Crouse return -EBUSY; 455c0ee9794SJordan Crouse 456c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 45790643a24SRob Clark if (GEM_WARN_ON(!vma)) 458c0ee9794SJordan Crouse return -EINVAL; 459c0ee9794SJordan Crouse 460c0ee9794SJordan Crouse pages = get_pages(obj); 461c0ee9794SJordan Crouse if (IS_ERR(pages)) 462c0ee9794SJordan Crouse return PTR_ERR(pages); 463c0ee9794SJordan Crouse 46464fcbde7SRob Clark ret = msm_gem_map_vma(aspace, vma, prot, 465bbc2cd07SRob Clark msm_obj->sgt, obj->size >> PAGE_SHIFT); 46664fcbde7SRob Clark 46764fcbde7SRob Clark if (!ret) 46864fcbde7SRob Clark msm_obj->pin_count++; 46964fcbde7SRob Clark 47064fcbde7SRob Clark return ret; 471c0ee9794SJordan Crouse } 472c0ee9794SJordan Crouse 473e4b87d22SRob Clark static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, 474d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova, 475d3b8877eSJonathan Marek u64 range_start, u64 range_end) 476c0ee9794SJordan Crouse { 477c0ee9794SJordan Crouse u64 local; 478c0ee9794SJordan Crouse int ret; 479c0ee9794SJordan Crouse 48090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 481c0ee9794SJordan Crouse 4828117e5e5SRob Clark ret = get_iova_locked(obj, aspace, &local, 483d3b8877eSJonathan Marek range_start, range_end); 484c0ee9794SJordan Crouse 485c0ee9794SJordan Crouse if (!ret) 486c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 487c0ee9794SJordan Crouse 488c0ee9794SJordan Crouse if (!ret) 489c0ee9794SJordan Crouse *iova = local; 490c0ee9794SJordan Crouse 491c8afe684SRob Clark return ret; 492c8afe684SRob Clark } 493c8afe684SRob Clark 494e4b87d22SRob Clark /* 495e4b87d22SRob Clark * get iova and pin it. Should have a matching put 496e4b87d22SRob Clark * limits iova to specified range (in pages) 497e4b87d22SRob Clark */ 498e4b87d22SRob Clark int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, 499e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova, 500e4b87d22SRob Clark u64 range_start, u64 range_end) 501e4b87d22SRob Clark { 502e4b87d22SRob Clark int ret; 503e4b87d22SRob Clark 504e4b87d22SRob Clark msm_gem_lock(obj); 505e4b87d22SRob Clark ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); 506e4b87d22SRob Clark msm_gem_unlock(obj); 507e4b87d22SRob Clark 508e4b87d22SRob Clark return ret; 509e4b87d22SRob Clark } 510e4b87d22SRob Clark 511e4b87d22SRob Clark int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, 512e4b87d22SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 513e4b87d22SRob Clark { 514e4b87d22SRob Clark return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); 515e4b87d22SRob Clark } 516e4b87d22SRob Clark 517d3b8877eSJonathan Marek /* get iova and pin it. Should have a matching put */ 518d3b8877eSJonathan Marek int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 519d3b8877eSJonathan Marek struct msm_gem_address_space *aspace, uint64_t *iova) 520d3b8877eSJonathan Marek { 521d3b8877eSJonathan Marek return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX); 522d3b8877eSJonathan Marek } 523d3b8877eSJonathan Marek 5247ad0e8cfSJordan Crouse /* 5257ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 5267ad0e8cfSJordan Crouse * valid for the life of the object 5277ad0e8cfSJordan Crouse */ 5289fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 5299fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 5309fe041f6SJordan Crouse { 5319fe041f6SJordan Crouse int ret; 5329fe041f6SJordan Crouse 533a6ae74c9SRob Clark msm_gem_lock(obj); 5348117e5e5SRob Clark ret = get_iova_locked(obj, aspace, iova, 0, U64_MAX); 535a6ae74c9SRob Clark msm_gem_unlock(obj); 5369fe041f6SJordan Crouse 5379fe041f6SJordan Crouse return ret; 5389fe041f6SJordan Crouse } 5399fe041f6SJordan Crouse 5402638d90aSRob Clark /* get iova without taking a reference, used in places where you have 5419fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 5422638d90aSRob Clark */ 5438bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 5448bdcd949SRob Clark struct msm_gem_address_space *aspace) 5452638d90aSRob Clark { 5464b85f7f5SRob Clark struct msm_gem_vma *vma; 5474b85f7f5SRob Clark 548a6ae74c9SRob Clark msm_gem_lock(obj); 5494b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 550a6ae74c9SRob Clark msm_gem_unlock(obj); 55190643a24SRob Clark GEM_WARN_ON(!vma); 5524b85f7f5SRob Clark 5534b85f7f5SRob Clark return vma ? vma->iova : 0; 5542638d90aSRob Clark } 5552638d90aSRob Clark 5567ad0e8cfSJordan Crouse /* 557e4b87d22SRob Clark * Locked variant of msm_gem_unpin_iova() 558e4b87d22SRob Clark */ 559e4b87d22SRob Clark void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, 560e4b87d22SRob Clark struct msm_gem_address_space *aspace) 561e4b87d22SRob Clark { 56264fcbde7SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 563e4b87d22SRob Clark struct msm_gem_vma *vma; 564e4b87d22SRob Clark 56590643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 566e4b87d22SRob Clark 567e4b87d22SRob Clark vma = lookup_vma(obj, aspace); 568e4b87d22SRob Clark 56964fcbde7SRob Clark if (!GEM_WARN_ON(!vma)) { 570e4b87d22SRob Clark msm_gem_unmap_vma(aspace, vma); 57164fcbde7SRob Clark 57264fcbde7SRob Clark msm_obj->pin_count--; 57364fcbde7SRob Clark GEM_WARN_ON(msm_obj->pin_count < 0); 57464fcbde7SRob Clark 57564fcbde7SRob Clark update_inactive(msm_obj); 57664fcbde7SRob Clark } 577e4b87d22SRob Clark } 578e4b87d22SRob Clark 579e4b87d22SRob Clark /* 5807ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 5817ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 5827ad0e8cfSJordan Crouse * to get rid of it 5837ad0e8cfSJordan Crouse */ 5847ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 5858bdcd949SRob Clark struct msm_gem_address_space *aspace) 586c8afe684SRob Clark { 587a6ae74c9SRob Clark msm_gem_lock(obj); 588e4b87d22SRob Clark msm_gem_unpin_iova_locked(obj, aspace); 589a6ae74c9SRob Clark msm_gem_unlock(obj); 590c8afe684SRob Clark } 591c8afe684SRob Clark 592c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 593c8afe684SRob Clark struct drm_mode_create_dumb *args) 594c8afe684SRob Clark { 595c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 596c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 597c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 5980815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 599c8afe684SRob Clark } 600c8afe684SRob Clark 601c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 602c8afe684SRob Clark uint32_t handle, uint64_t *offset) 603c8afe684SRob Clark { 604c8afe684SRob Clark struct drm_gem_object *obj; 605c8afe684SRob Clark int ret = 0; 606c8afe684SRob Clark 607c8afe684SRob Clark /* GEM does all our handle to object mapping */ 608a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 609c8afe684SRob Clark if (obj == NULL) { 610c8afe684SRob Clark ret = -ENOENT; 611c8afe684SRob Clark goto fail; 612c8afe684SRob Clark } 613c8afe684SRob Clark 614c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 615c8afe684SRob Clark 616f7d33950SEmil Velikov drm_gem_object_put(obj); 617c8afe684SRob Clark 618c8afe684SRob Clark fail: 619c8afe684SRob Clark return ret; 620c8afe684SRob Clark } 621c8afe684SRob Clark 622fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 623c8afe684SRob Clark { 6240e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6250e08270aSSushmita Susheelendra int ret = 0; 6260e08270aSSushmita Susheelendra 62790643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 628e4b87d22SRob Clark 6298b6b7d84SDaniel Vetter if (obj->import_attach) 6308b6b7d84SDaniel Vetter return ERR_PTR(-ENODEV); 6318b6b7d84SDaniel Vetter 63290643a24SRob Clark if (GEM_WARN_ON(msm_obj->madv > madv)) { 6336a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 634fad33f4bSRob Clark msm_obj->madv, madv); 6350e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 636c8afe684SRob Clark } 637c8afe684SRob Clark 6380e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 639a6ae74c9SRob Clark * check vmap_count (is_vunmapable()) outside of msm_obj lock. 6400e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 6410e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 642a6ae74c9SRob Clark * hold msm_obj lock) 6430e08270aSSushmita Susheelendra */ 6440e08270aSSushmita Susheelendra msm_obj->vmap_count++; 6450e08270aSSushmita Susheelendra 6460e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 6470e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 6480e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 6490e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 6500e08270aSSushmita Susheelendra goto fail; 6510e08270aSSushmita Susheelendra } 6520e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 653af9b3547SJonathan Marek VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 6540e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 6550e08270aSSushmita Susheelendra ret = -ENOMEM; 6560e08270aSSushmita Susheelendra goto fail; 6570e08270aSSushmita Susheelendra } 65810f76165SRob Clark 65910f76165SRob Clark update_inactive(msm_obj); 6600e08270aSSushmita Susheelendra } 6610e08270aSSushmita Susheelendra 6620e08270aSSushmita Susheelendra return msm_obj->vaddr; 6630e08270aSSushmita Susheelendra 6640e08270aSSushmita Susheelendra fail: 665e1e9db2cSRob Clark msm_obj->vmap_count--; 6660e08270aSSushmita Susheelendra return ERR_PTR(ret); 66718f23049SRob Clark } 66818f23049SRob Clark 669e4b87d22SRob Clark void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) 670e4b87d22SRob Clark { 671e4b87d22SRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 672e4b87d22SRob Clark } 673e4b87d22SRob Clark 674fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 675fad33f4bSRob Clark { 676e4b87d22SRob Clark void *ret; 677e4b87d22SRob Clark 678e4b87d22SRob Clark msm_gem_lock(obj); 679e4b87d22SRob Clark ret = msm_gem_get_vaddr_locked(obj); 680e4b87d22SRob Clark msm_gem_unlock(obj); 681e4b87d22SRob Clark 682e4b87d22SRob Clark return ret; 683fad33f4bSRob Clark } 684fad33f4bSRob Clark 685fad33f4bSRob Clark /* 686fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 687fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 688fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 689fad33f4bSRob Clark * active list. 690fad33f4bSRob Clark */ 691fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 692fad33f4bSRob Clark { 693fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 694fad33f4bSRob Clark } 695fad33f4bSRob Clark 696e4b87d22SRob Clark void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 69718f23049SRob Clark { 6980e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6990e08270aSSushmita Susheelendra 70090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 70190643a24SRob Clark GEM_WARN_ON(msm_obj->vmap_count < 1); 702e4b87d22SRob Clark 7030e08270aSSushmita Susheelendra msm_obj->vmap_count--; 7044cd33c48SRob Clark } 7050e08270aSSushmita Susheelendra 7060e08270aSSushmita Susheelendra void msm_gem_put_vaddr(struct drm_gem_object *obj) 7074cd33c48SRob Clark { 708a6ae74c9SRob Clark msm_gem_lock(obj); 709e4b87d22SRob Clark msm_gem_put_vaddr_locked(obj); 710a6ae74c9SRob Clark msm_gem_unlock(obj); 7114cd33c48SRob Clark } 7124cd33c48SRob Clark 7134cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 7144cd33c48SRob Clark * false or -errno. 7154cd33c48SRob Clark */ 7164cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 7174cd33c48SRob Clark { 7184cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 71968209390SRob Clark 720a6ae74c9SRob Clark msm_gem_lock(obj); 721c8afe684SRob Clark 722c8afe684SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 723c8afe684SRob Clark msm_obj->madv = madv; 724c8afe684SRob Clark 7250e08270aSSushmita Susheelendra madv = msm_obj->madv; 7260e08270aSSushmita Susheelendra 7273edfa30fSRob Clark /* If the obj is inactive, we might need to move it 7283edfa30fSRob Clark * between inactive lists 7293edfa30fSRob Clark */ 7303edfa30fSRob Clark if (msm_obj->active_count == 0) 7313edfa30fSRob Clark update_inactive(msm_obj); 7323edfa30fSRob Clark 733a6ae74c9SRob Clark msm_gem_unlock(obj); 7340e08270aSSushmita Susheelendra 7350e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 736c8afe684SRob Clark } 737c8afe684SRob Clark 738599089c6SRob Clark void msm_gem_purge(struct drm_gem_object *obj) 73968209390SRob Clark { 74068209390SRob Clark struct drm_device *dev = obj->dev; 74168209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 74268209390SRob Clark 74381d4d597SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 74490643a24SRob Clark GEM_WARN_ON(!is_purgeable(msm_obj)); 74568209390SRob Clark 74620d0ae2fSRob Clark /* Get rid of any iommu mapping(s): */ 74720d0ae2fSRob Clark put_iova_spaces(obj, true); 7480e08270aSSushmita Susheelendra 749599089c6SRob Clark msm_gem_vunmap(obj); 75068209390SRob Clark 75181d4d597SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 75281d4d597SRob Clark 75368209390SRob Clark put_pages(obj); 75468209390SRob Clark 7559b73bde3SIskren Chernev put_iova_vmas(obj); 7569b73bde3SIskren Chernev 75768209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 75825ed38b3SRob Clark update_inactive(msm_obj); 75968209390SRob Clark 76068209390SRob Clark drm_gem_free_mmap_offset(obj); 76168209390SRob Clark 76268209390SRob Clark /* Our goal here is to return as much of the memory as 76368209390SRob Clark * is possible back to the system as we are called from OOM. 76468209390SRob Clark * To do this we must instruct the shmfs to drop all of its 76568209390SRob Clark * backing pages, *now*. 76668209390SRob Clark */ 76768209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 76868209390SRob Clark 76968209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 77068209390SRob Clark 0, (loff_t)-1); 77168209390SRob Clark } 77268209390SRob Clark 77363f17ef8SRob Clark /** 77463f17ef8SRob Clark * Unpin the backing pages and make them available to be swapped out. 77563f17ef8SRob Clark */ 77663f17ef8SRob Clark void msm_gem_evict(struct drm_gem_object *obj) 77763f17ef8SRob Clark { 77863f17ef8SRob Clark struct drm_device *dev = obj->dev; 77963f17ef8SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 78063f17ef8SRob Clark 78163f17ef8SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 78263f17ef8SRob Clark GEM_WARN_ON(is_unevictable(msm_obj)); 78363f17ef8SRob Clark GEM_WARN_ON(!msm_obj->evictable); 78463f17ef8SRob Clark GEM_WARN_ON(msm_obj->active_count); 78563f17ef8SRob Clark 78663f17ef8SRob Clark /* Get rid of any iommu mapping(s): */ 78763f17ef8SRob Clark put_iova_spaces(obj, false); 78863f17ef8SRob Clark 78963f17ef8SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 79063f17ef8SRob Clark 79163f17ef8SRob Clark put_pages(obj); 79263f17ef8SRob Clark 79363f17ef8SRob Clark update_inactive(msm_obj); 79463f17ef8SRob Clark } 79563f17ef8SRob Clark 796599089c6SRob Clark void msm_gem_vunmap(struct drm_gem_object *obj) 797e1e9db2cSRob Clark { 798e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 799e1e9db2cSRob Clark 80090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8010e08270aSSushmita Susheelendra 80290643a24SRob Clark if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) 803e1e9db2cSRob Clark return; 804e1e9db2cSRob Clark 805e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 806e1e9db2cSRob Clark msm_obj->vaddr = NULL; 807e1e9db2cSRob Clark } 808e1e9db2cSRob Clark 809b6295f9aSRob Clark /* must be called before _move_to_active().. */ 810b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 811b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 812b6295f9aSRob Clark { 81352791eeeSChristian König struct dma_resv_list *fobj; 814f54d1867SChris Wilson struct dma_fence *fence; 815b6295f9aSRob Clark int i, ret; 816b6295f9aSRob Clark 81752791eeeSChristian König fobj = dma_resv_get_list(obj->resv); 818b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 81952791eeeSChristian König fence = dma_resv_get_excl(obj->resv); 820b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 821b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 822f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 823b6295f9aSRob Clark if (ret) 824b6295f9aSRob Clark return ret; 825b6295f9aSRob Clark } 826b6295f9aSRob Clark } 827b6295f9aSRob Clark 828b6295f9aSRob Clark if (!exclusive || !fobj) 829b6295f9aSRob Clark return 0; 830b6295f9aSRob Clark 831b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 832b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 83352791eeeSChristian König dma_resv_held(obj->resv)); 834b6295f9aSRob Clark if (fence->context != fctx->context) { 835f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 836b6295f9aSRob Clark if (ret) 837b6295f9aSRob Clark return ret; 838b6295f9aSRob Clark } 839b6295f9aSRob Clark } 840b6295f9aSRob Clark 841b6295f9aSRob Clark return 0; 842b6295f9aSRob Clark } 843b6295f9aSRob Clark 8449d8baa2bSAkhil P Oommen void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) 8457198e6b0SRob Clark { 8467198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 847d984457bSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 848d984457bSRob Clark 849d984457bSRob Clark might_sleep(); 85090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 85190643a24SRob Clark GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 85290643a24SRob Clark GEM_WARN_ON(msm_obj->dontneed); 85364fcbde7SRob Clark GEM_WARN_ON(!msm_obj->sgt); 8549d8baa2bSAkhil P Oommen 855ab5c54cbSRob Clark if (msm_obj->active_count++ == 0) { 856d984457bSRob Clark mutex_lock(&priv->mm_lock); 85764fcbde7SRob Clark if (msm_obj->evictable) 85864fcbde7SRob Clark mark_unevictable(msm_obj); 859cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 8607198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 861d984457bSRob Clark mutex_unlock(&priv->mm_lock); 8627198e6b0SRob Clark } 8639d8baa2bSAkhil P Oommen } 8647198e6b0SRob Clark 8659d8baa2bSAkhil P Oommen void msm_gem_active_put(struct drm_gem_object *obj) 8667198e6b0SRob Clark { 8677198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 8687198e6b0SRob Clark 869d984457bSRob Clark might_sleep(); 87090643a24SRob Clark GEM_WARN_ON(!msm_gem_is_locked(obj)); 8717198e6b0SRob Clark 872ab5c54cbSRob Clark if (--msm_obj->active_count == 0) { 8733edfa30fSRob Clark update_inactive(msm_obj); 8747198e6b0SRob Clark } 8759d8baa2bSAkhil P Oommen } 8767198e6b0SRob Clark 8773edfa30fSRob Clark static void update_inactive(struct msm_gem_object *msm_obj) 8783edfa30fSRob Clark { 8793edfa30fSRob Clark struct msm_drm_private *priv = msm_obj->base.dev->dev_private; 8803edfa30fSRob Clark 88164fcbde7SRob Clark GEM_WARN_ON(!msm_gem_is_locked(&msm_obj->base)); 88264fcbde7SRob Clark 88364fcbde7SRob Clark if (msm_obj->active_count != 0) 88464fcbde7SRob Clark return; 88564fcbde7SRob Clark 8863edfa30fSRob Clark mutex_lock(&priv->mm_lock); 8873edfa30fSRob Clark 888cc8a4d5aSRob Clark if (msm_obj->dontneed) 8890054eeb7SRob Clark mark_unpurgeable(msm_obj); 89064fcbde7SRob Clark if (msm_obj->evictable) 89164fcbde7SRob Clark mark_unevictable(msm_obj); 892cc8a4d5aSRob Clark 893cc8a4d5aSRob Clark list_del(&msm_obj->mm_list); 89464fcbde7SRob Clark if ((msm_obj->madv == MSM_MADV_WILLNEED) && msm_obj->sgt) { 8953edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_willneed); 89664fcbde7SRob Clark mark_evictable(msm_obj); 897cc8a4d5aSRob Clark } else if (msm_obj->madv == MSM_MADV_DONTNEED) { 8983edfa30fSRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_dontneed); 8990054eeb7SRob Clark mark_purgeable(msm_obj); 900cc8a4d5aSRob Clark } else { 90164fcbde7SRob Clark GEM_WARN_ON((msm_obj->madv != __MSM_MADV_PURGED) && msm_obj->sgt); 90264fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 903cc8a4d5aSRob Clark } 9043edfa30fSRob Clark 9053edfa30fSRob Clark mutex_unlock(&priv->mm_lock); 9063edfa30fSRob Clark } 9073edfa30fSRob Clark 908ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 909ba00c3f2SRob Clark { 910b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 911f755e227SChris Wilson unsigned long remain = 912f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 913f755e227SChris Wilson long ret; 914b6295f9aSRob Clark 91552791eeeSChristian König ret = dma_resv_wait_timeout_rcu(obj->resv, write, 916f755e227SChris Wilson true, remain); 917f755e227SChris Wilson if (ret == 0) 918f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 919f755e227SChris Wilson else if (ret < 0) 920f755e227SChris Wilson return ret; 921ba00c3f2SRob Clark 9227198e6b0SRob Clark /* TODO cache maintenance */ 9237198e6b0SRob Clark 924b6295f9aSRob Clark return 0; 9257198e6b0SRob Clark } 9267198e6b0SRob Clark 9277198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 9287198e6b0SRob Clark { 9297198e6b0SRob Clark /* TODO cache maintenance */ 930c8afe684SRob Clark return 0; 931c8afe684SRob Clark } 932c8afe684SRob Clark 933c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 934f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 935b6295f9aSRob Clark struct seq_file *m) 936b6295f9aSRob Clark { 937f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 938a3115621SDave Airlie seq_printf(m, "\t%9s: %s %s seq %llu\n", type, 939b6295f9aSRob Clark fence->ops->get_driver_name(fence), 940b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 941b6295f9aSRob Clark fence->seqno); 942b6295f9aSRob Clark } 943b6295f9aSRob Clark 944528107c8SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m, 945528107c8SRob Clark struct msm_gem_stats *stats) 946c8afe684SRob Clark { 947c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 94852791eeeSChristian König struct dma_resv *robj = obj->resv; 94952791eeeSChristian König struct dma_resv_list *fobj; 950f54d1867SChris Wilson struct dma_fence *fence; 9514b85f7f5SRob Clark struct msm_gem_vma *vma; 952c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 9534cd33c48SRob Clark const char *madv; 954c8afe684SRob Clark 955a6ae74c9SRob Clark msm_gem_lock(obj); 956b6295f9aSRob Clark 957528107c8SRob Clark stats->all.count++; 958528107c8SRob Clark stats->all.size += obj->size; 959528107c8SRob Clark 960528107c8SRob Clark if (is_active(msm_obj)) { 961528107c8SRob Clark stats->active.count++; 962528107c8SRob Clark stats->active.size += obj->size; 963528107c8SRob Clark } 964528107c8SRob Clark 965f48f3563SRob Clark if (msm_obj->pages) { 966f48f3563SRob Clark stats->resident.count++; 967f48f3563SRob Clark stats->resident.size += obj->size; 968f48f3563SRob Clark } 969f48f3563SRob Clark 9704cd33c48SRob Clark switch (msm_obj->madv) { 9714cd33c48SRob Clark case __MSM_MADV_PURGED: 972528107c8SRob Clark stats->purged.count++; 973528107c8SRob Clark stats->purged.size += obj->size; 9744cd33c48SRob Clark madv = " purged"; 9754cd33c48SRob Clark break; 9764cd33c48SRob Clark case MSM_MADV_DONTNEED: 9770054eeb7SRob Clark stats->purgeable.count++; 9780054eeb7SRob Clark stats->purgeable.size += obj->size; 9794cd33c48SRob Clark madv = " purgeable"; 9804cd33c48SRob Clark break; 9814cd33c48SRob Clark case MSM_MADV_WILLNEED: 9824cd33c48SRob Clark default: 9834cd33c48SRob Clark madv = ""; 9844cd33c48SRob Clark break; 9854cd33c48SRob Clark } 9864cd33c48SRob Clark 987575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 9887198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 9892c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 990667ce33eSRob Clark off, msm_obj->vaddr); 991667ce33eSRob Clark 9920815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 993667ce33eSRob Clark 994575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 995575f0485SJordan Crouse 996575f0485SJordan Crouse seq_puts(m, " vmas:"); 997575f0485SJordan Crouse 99825faf2f2SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 99925faf2f2SRob Clark const char *name, *comm; 100025faf2f2SRob Clark if (vma->aspace) { 100125faf2f2SRob Clark struct msm_gem_address_space *aspace = vma->aspace; 100225faf2f2SRob Clark struct task_struct *task = 100325faf2f2SRob Clark get_pid_task(aspace->pid, PIDTYPE_PID); 100425faf2f2SRob Clark if (task) { 100525faf2f2SRob Clark comm = kstrdup(task->comm, GFP_KERNEL); 100625faf2f2SRob Clark } else { 100725faf2f2SRob Clark comm = NULL; 100825faf2f2SRob Clark } 100925faf2f2SRob Clark name = aspace->name; 101025faf2f2SRob Clark } else { 101125faf2f2SRob Clark name = comm = NULL; 101225faf2f2SRob Clark } 101325faf2f2SRob Clark seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]", 101425faf2f2SRob Clark name, comm ? ":" : "", comm ? comm : "", 101525faf2f2SRob Clark vma->aspace, vma->iova, 101625faf2f2SRob Clark vma->mapped ? "mapped" : "unmapped", 10177ad0e8cfSJordan Crouse vma->inuse); 101825faf2f2SRob Clark kfree(comm); 101925faf2f2SRob Clark } 1020575f0485SJordan Crouse 1021575f0485SJordan Crouse seq_puts(m, "\n"); 1022575f0485SJordan Crouse } 1023b6295f9aSRob Clark 1024b6295f9aSRob Clark rcu_read_lock(); 1025b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 1026b6295f9aSRob Clark if (fobj) { 1027b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 1028b6295f9aSRob Clark 1029b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 1030b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 1031b6295f9aSRob Clark describe_fence(fence, "Shared", m); 1032b6295f9aSRob Clark } 1033b6295f9aSRob Clark } 1034b6295f9aSRob Clark 1035b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 1036b6295f9aSRob Clark if (fence) 1037b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 1038b6295f9aSRob Clark rcu_read_unlock(); 10390e08270aSSushmita Susheelendra 1040a6ae74c9SRob Clark msm_gem_unlock(obj); 1041c8afe684SRob Clark } 1042c8afe684SRob Clark 1043c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 1044c8afe684SRob Clark { 1045528107c8SRob Clark struct msm_gem_stats stats = {}; 1046c8afe684SRob Clark struct msm_gem_object *msm_obj; 1047c8afe684SRob Clark 10480815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 10496ed0897cSRob Clark list_for_each_entry(msm_obj, list, node) { 1050c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 1051575f0485SJordan Crouse seq_puts(m, " "); 1052528107c8SRob Clark msm_gem_describe(obj, m, &stats); 1053c8afe684SRob Clark } 1054c8afe684SRob Clark 1055528107c8SRob Clark seq_printf(m, "Total: %4d objects, %9zu bytes\n", 1056528107c8SRob Clark stats.all.count, stats.all.size); 1057528107c8SRob Clark seq_printf(m, "Active: %4d objects, %9zu bytes\n", 1058528107c8SRob Clark stats.active.count, stats.active.size); 1059f48f3563SRob Clark seq_printf(m, "Resident: %4d objects, %9zu bytes\n", 1060f48f3563SRob Clark stats.resident.count, stats.resident.size); 1061f1902c6bSColin Ian King seq_printf(m, "Purgeable: %4d objects, %9zu bytes\n", 10620054eeb7SRob Clark stats.purgeable.count, stats.purgeable.size); 1063528107c8SRob Clark seq_printf(m, "Purged: %4d objects, %9zu bytes\n", 1064528107c8SRob Clark stats.purged.count, stats.purged.size); 1065c8afe684SRob Clark } 1066c8afe684SRob Clark #endif 1067c8afe684SRob Clark 1068eecd7fd8SEmil Velikov /* don't call directly! Use drm_gem_object_put_locked() and friends */ 1069c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 1070c8afe684SRob Clark { 1071c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 107248e7f183SKristian H. Kristensen struct drm_device *dev = obj->dev; 107348e7f183SKristian H. Kristensen struct msm_drm_private *priv = dev->dev_private; 107448e7f183SKristian H. Kristensen 10756ed0897cSRob Clark mutex_lock(&priv->obj_lock); 10766ed0897cSRob Clark list_del(&msm_obj->node); 10776ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 10786ed0897cSRob Clark 1079d984457bSRob Clark mutex_lock(&priv->mm_lock); 1080cc8a4d5aSRob Clark if (msm_obj->dontneed) 10810054eeb7SRob Clark mark_unpurgeable(msm_obj); 1082c8afe684SRob Clark list_del(&msm_obj->mm_list); 1083d984457bSRob Clark mutex_unlock(&priv->mm_lock); 1084c8afe684SRob Clark 1085a6ae74c9SRob Clark msm_gem_lock(obj); 1086c8afe684SRob Clark 1087c8afe684SRob Clark /* object should not be on active list: */ 108890643a24SRob Clark GEM_WARN_ON(is_active(msm_obj)); 1089c8afe684SRob Clark 109020d0ae2fSRob Clark put_iova_spaces(obj, true); 1091c8afe684SRob Clark 109205b84911SRob Clark if (obj->import_attach) { 109390643a24SRob Clark GEM_WARN_ON(msm_obj->vaddr); 109405b84911SRob Clark 109505b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 109605b84911SRob Clark * ours, just free the array we allocated: 109705b84911SRob Clark */ 10982098105eSMichal Hocko kvfree(msm_obj->pages); 109905b84911SRob Clark 110057f04815SRob Clark put_iova_vmas(obj); 110157f04815SRob Clark 11026c0e3ea2SRob Clark /* dma_buf_detach() grabs resv lock, so we need to unlock 11036c0e3ea2SRob Clark * prior to drm_prime_gem_destroy 11046c0e3ea2SRob Clark */ 11056c0e3ea2SRob Clark msm_gem_unlock(obj); 11066c0e3ea2SRob Clark 1107f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 110805b84911SRob Clark } else { 1109599089c6SRob Clark msm_gem_vunmap(obj); 1110c8afe684SRob Clark put_pages(obj); 111157f04815SRob Clark put_iova_vmas(obj); 11126c0e3ea2SRob Clark msm_gem_unlock(obj); 111305b84911SRob Clark } 1114c8afe684SRob Clark 1115c8afe684SRob Clark drm_gem_object_release(obj); 1116c8afe684SRob Clark 1117c8afe684SRob Clark kfree(msm_obj); 1118c8afe684SRob Clark } 1119c8afe684SRob Clark 1120c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 1121c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 11220815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 11230815d774SJordan Crouse char *name) 1124c8afe684SRob Clark { 1125c8afe684SRob Clark struct drm_gem_object *obj; 1126c8afe684SRob Clark int ret; 1127c8afe684SRob Clark 1128c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 1129c8afe684SRob Clark 1130c8afe684SRob Clark if (IS_ERR(obj)) 1131c8afe684SRob Clark return PTR_ERR(obj); 1132c8afe684SRob Clark 11330815d774SJordan Crouse if (name) 11340815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 11350815d774SJordan Crouse 1136c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 1137c8afe684SRob Clark 1138c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 1139f7d33950SEmil Velikov drm_gem_object_put(obj); 1140c8afe684SRob Clark 1141c8afe684SRob Clark return ret; 1142c8afe684SRob Clark } 1143c8afe684SRob Clark 11443c9edd9cSThomas Zimmermann static const struct vm_operations_struct vm_ops = { 11453c9edd9cSThomas Zimmermann .fault = msm_gem_fault, 11463c9edd9cSThomas Zimmermann .open = drm_gem_vm_open, 11473c9edd9cSThomas Zimmermann .close = drm_gem_vm_close, 11483c9edd9cSThomas Zimmermann }; 11493c9edd9cSThomas Zimmermann 11503c9edd9cSThomas Zimmermann static const struct drm_gem_object_funcs msm_gem_object_funcs = { 11513c9edd9cSThomas Zimmermann .free = msm_gem_free_object, 11523c9edd9cSThomas Zimmermann .pin = msm_gem_prime_pin, 11533c9edd9cSThomas Zimmermann .unpin = msm_gem_prime_unpin, 11543c9edd9cSThomas Zimmermann .get_sg_table = msm_gem_prime_get_sg_table, 11553c9edd9cSThomas Zimmermann .vmap = msm_gem_prime_vmap, 11563c9edd9cSThomas Zimmermann .vunmap = msm_gem_prime_vunmap, 11573c9edd9cSThomas Zimmermann .vm_ops = &vm_ops, 11583c9edd9cSThomas Zimmermann }; 11593c9edd9cSThomas Zimmermann 116005b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 116105b84911SRob Clark uint32_t size, uint32_t flags, 11623cbdc8d8SAkhil P Oommen struct drm_gem_object **obj) 1163c8afe684SRob Clark { 1164*d12e3390SJonathan Marek struct msm_drm_private *priv = dev->dev_private; 1165c8afe684SRob Clark struct msm_gem_object *msm_obj; 1166c8afe684SRob Clark 1167c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 1168c8afe684SRob Clark case MSM_BO_UNCACHED: 1169c8afe684SRob Clark case MSM_BO_CACHED: 1170c8afe684SRob Clark case MSM_BO_WC: 1171c8afe684SRob Clark break; 1172*d12e3390SJonathan Marek case MSM_BO_CACHED_COHERENT: 1173*d12e3390SJonathan Marek if (priv->has_cached_coherent) 1174*d12e3390SJonathan Marek break; 1175*d12e3390SJonathan Marek /* fallthrough */ 1176c8afe684SRob Clark default: 11776a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 1178c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 117905b84911SRob Clark return -EINVAL; 1180c8afe684SRob Clark } 1181c8afe684SRob Clark 1182667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 118305b84911SRob Clark if (!msm_obj) 118405b84911SRob Clark return -ENOMEM; 1185c8afe684SRob Clark 1186c8afe684SRob Clark msm_obj->flags = flags; 11874cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 1188c8afe684SRob Clark 11897198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 11904b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 11914b85f7f5SRob Clark 119205b84911SRob Clark *obj = &msm_obj->base; 11933c9edd9cSThomas Zimmermann (*obj)->funcs = &msm_gem_object_funcs; 119405b84911SRob Clark 119505b84911SRob Clark return 0; 119605b84911SRob Clark } 119705b84911SRob Clark 11980e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 11990e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 120005b84911SRob Clark { 1201f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 12023cbdc8d8SAkhil P Oommen struct msm_gem_object *msm_obj; 1203871d812aSRob Clark struct drm_gem_object *obj = NULL; 1204f4839bd5SRob Clark bool use_vram = false; 120505b84911SRob Clark int ret; 120605b84911SRob Clark 120705b84911SRob Clark size = PAGE_ALIGN(size); 120805b84911SRob Clark 1209c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) 1210f4839bd5SRob Clark use_vram = true; 121186f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 1212f4839bd5SRob Clark use_vram = true; 1213f4839bd5SRob Clark 121490643a24SRob Clark if (GEM_WARN_ON(use_vram && !priv->vram.size)) 1215f4839bd5SRob Clark return ERR_PTR(-EINVAL); 1216f4839bd5SRob Clark 12171a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 12181a5dff5dSJordan Crouse * infrastructure grumpy 12191a5dff5dSJordan Crouse */ 12201a5dff5dSJordan Crouse if (size == 0) 12211a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 12221a5dff5dSJordan Crouse 12233cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, flags, &obj); 122405b84911SRob Clark if (ret) 122505b84911SRob Clark goto fail; 122605b84911SRob Clark 12273cbdc8d8SAkhil P Oommen msm_obj = to_msm_bo(obj); 12283cbdc8d8SAkhil P Oommen 1229f4839bd5SRob Clark if (use_vram) { 12304b85f7f5SRob Clark struct msm_gem_vma *vma; 1231f4839bd5SRob Clark struct page **pages; 1232b3949a9aSHans Verkuil 1233a694ffedSIskren Chernev drm_gem_private_object_init(dev, obj, size); 1234a694ffedSIskren Chernev 1235a6ae74c9SRob Clark msm_gem_lock(obj); 1236f4839bd5SRob Clark 12374b85f7f5SRob Clark vma = add_vma(obj, NULL); 1238a6ae74c9SRob Clark msm_gem_unlock(obj); 12394b85f7f5SRob Clark if (IS_ERR(vma)) { 12404b85f7f5SRob Clark ret = PTR_ERR(vma); 12414b85f7f5SRob Clark goto fail; 12424b85f7f5SRob Clark } 12434b85f7f5SRob Clark 12444b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 12454b85f7f5SRob Clark 124607fcad0dSIskren Chernev msm_gem_lock(obj); 1247f4839bd5SRob Clark pages = get_pages(obj); 124807fcad0dSIskren Chernev msm_gem_unlock(obj); 1249f4839bd5SRob Clark if (IS_ERR(pages)) { 1250f4839bd5SRob Clark ret = PTR_ERR(pages); 1251f4839bd5SRob Clark goto fail; 1252f4839bd5SRob Clark } 12534b85f7f5SRob Clark 12544b85f7f5SRob Clark vma->iova = physaddr(obj); 1255f4839bd5SRob Clark } else { 125605b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 125705b84911SRob Clark if (ret) 125805b84911SRob Clark goto fail; 12590abdba47SLucas Stach /* 12600abdba47SLucas Stach * Our buffers are kept pinned, so allocating them from the 12610abdba47SLucas Stach * MOVABLE zone is a really bad idea, and conflicts with CMA. 12620abdba47SLucas Stach * See comments above new_inode() why this is required _and_ 12630abdba47SLucas Stach * expected if you're going to pin these pages. 12640abdba47SLucas Stach */ 12650abdba47SLucas Stach mapping_set_gfp_mask(obj->filp->f_mapping, GFP_HIGHUSER); 1266871d812aSRob Clark } 126705b84911SRob Clark 1268d984457bSRob Clark mutex_lock(&priv->mm_lock); 126964fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1270d984457bSRob Clark mutex_unlock(&priv->mm_lock); 12713cbdc8d8SAkhil P Oommen 12726ed0897cSRob Clark mutex_lock(&priv->obj_lock); 12736ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 12746ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 12756ed0897cSRob Clark 127605b84911SRob Clark return obj; 127705b84911SRob Clark 127805b84911SRob Clark fail: 1279ce0a9dc0SRob Clark if (struct_mutex_locked) { 1280ce0a9dc0SRob Clark drm_gem_object_put_locked(obj); 1281ce0a9dc0SRob Clark } else { 1282f7d33950SEmil Velikov drm_gem_object_put(obj); 1283ce0a9dc0SRob Clark } 128405b84911SRob Clark return ERR_PTR(ret); 128505b84911SRob Clark } 128605b84911SRob Clark 12870e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 12880e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12890e08270aSSushmita Susheelendra { 12900e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 12910e08270aSSushmita Susheelendra } 12920e08270aSSushmita Susheelendra 12930e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 12940e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 12950e08270aSSushmita Susheelendra { 12960e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 12970e08270aSSushmita Susheelendra } 12980e08270aSSushmita Susheelendra 129905b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 130079f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 130105b84911SRob Clark { 13023cbdc8d8SAkhil P Oommen struct msm_drm_private *priv = dev->dev_private; 130305b84911SRob Clark struct msm_gem_object *msm_obj; 130405b84911SRob Clark struct drm_gem_object *obj; 130579f0e202SRob Clark uint32_t size; 130605b84911SRob Clark int ret, npages; 130705b84911SRob Clark 1308871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1309c2052a4eSJonathan Marek if (!msm_use_mmu(dev)) { 13106a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1311871d812aSRob Clark return ERR_PTR(-EINVAL); 1312871d812aSRob Clark } 1313871d812aSRob Clark 131479f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 131505b84911SRob Clark 13163cbdc8d8SAkhil P Oommen ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 131705b84911SRob Clark if (ret) 131805b84911SRob Clark goto fail; 131905b84911SRob Clark 132005b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 132105b84911SRob Clark 132205b84911SRob Clark npages = size / PAGE_SIZE; 132305b84911SRob Clark 132405b84911SRob Clark msm_obj = to_msm_bo(obj); 1325a6ae74c9SRob Clark msm_gem_lock(obj); 132605b84911SRob Clark msm_obj->sgt = sgt; 13272098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 132805b84911SRob Clark if (!msm_obj->pages) { 1329a6ae74c9SRob Clark msm_gem_unlock(obj); 133005b84911SRob Clark ret = -ENOMEM; 133105b84911SRob Clark goto fail; 133205b84911SRob Clark } 133305b84911SRob Clark 1334c67e6279SChristian König ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages); 13350e08270aSSushmita Susheelendra if (ret) { 1336a6ae74c9SRob Clark msm_gem_unlock(obj); 133705b84911SRob Clark goto fail; 13380e08270aSSushmita Susheelendra } 133905b84911SRob Clark 1340a6ae74c9SRob Clark msm_gem_unlock(obj); 13413cbdc8d8SAkhil P Oommen 1342d984457bSRob Clark mutex_lock(&priv->mm_lock); 134364fcbde7SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_unpinned); 1344d984457bSRob Clark mutex_unlock(&priv->mm_lock); 13453cbdc8d8SAkhil P Oommen 13466ed0897cSRob Clark mutex_lock(&priv->obj_lock); 13476ed0897cSRob Clark list_add_tail(&msm_obj->node, &priv->objects); 13486ed0897cSRob Clark mutex_unlock(&priv->obj_lock); 13496ed0897cSRob Clark 1350c8afe684SRob Clark return obj; 1351c8afe684SRob Clark 1352c8afe684SRob Clark fail: 1353f7d33950SEmil Velikov drm_gem_object_put(obj); 1354c8afe684SRob Clark return ERR_PTR(ret); 1355c8afe684SRob Clark } 13568223286dSJordan Crouse 13578223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13588223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13598223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 13608223286dSJordan Crouse { 13618223286dSJordan Crouse void *vaddr; 13628223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 13638223286dSJordan Crouse int ret; 13648223286dSJordan Crouse 13658223286dSJordan Crouse if (IS_ERR(obj)) 13668223286dSJordan Crouse return ERR_CAST(obj); 13678223286dSJordan Crouse 13688223286dSJordan Crouse if (iova) { 13699fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 137093f7abf1SJordan Crouse if (ret) 137193f7abf1SJordan Crouse goto err; 13728223286dSJordan Crouse } 13738223286dSJordan Crouse 13748223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1375c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 13767ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 137793f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 137893f7abf1SJordan Crouse goto err; 13798223286dSJordan Crouse } 13808223286dSJordan Crouse 13818223286dSJordan Crouse if (bo) 13828223286dSJordan Crouse *bo = obj; 13838223286dSJordan Crouse 13848223286dSJordan Crouse return vaddr; 138593f7abf1SJordan Crouse err: 138693f7abf1SJordan Crouse if (locked) 1387eecd7fd8SEmil Velikov drm_gem_object_put_locked(obj); 138893f7abf1SJordan Crouse else 1389f7d33950SEmil Velikov drm_gem_object_put(obj); 139093f7abf1SJordan Crouse 139193f7abf1SJordan Crouse return ERR_PTR(ret); 139293f7abf1SJordan Crouse 13938223286dSJordan Crouse } 13948223286dSJordan Crouse 13958223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 13968223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 13978223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 13988223286dSJordan Crouse { 13998223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 14008223286dSJordan Crouse } 14018223286dSJordan Crouse 14028223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 14038223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 14048223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 14058223286dSJordan Crouse { 14068223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 14078223286dSJordan Crouse } 14081e29dff0SJordan Crouse 14091e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 14101e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 14111e29dff0SJordan Crouse { 14121e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 14131e29dff0SJordan Crouse return; 14141e29dff0SJordan Crouse 14151e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 14167ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 14171e29dff0SJordan Crouse 14181e29dff0SJordan Crouse if (locked) 1419eecd7fd8SEmil Velikov drm_gem_object_put_locked(bo); 14201e29dff0SJordan Crouse else 1421f7d33950SEmil Velikov drm_gem_object_put(bo); 14221e29dff0SJordan Crouse } 14230815d774SJordan Crouse 14240815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 14250815d774SJordan Crouse { 14260815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 14270815d774SJordan Crouse va_list ap; 14280815d774SJordan Crouse 14290815d774SJordan Crouse if (!fmt) 14300815d774SJordan Crouse return; 14310815d774SJordan Crouse 14320815d774SJordan Crouse va_start(ap, fmt); 14330815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 14340815d774SJordan Crouse va_end(ap); 14350815d774SJordan Crouse } 1436