1c8afe684SRob Clark /* 2c8afe684SRob Clark * Copyright (C) 2013 Red Hat 3c8afe684SRob Clark * Author: Rob Clark <robdclark@gmail.com> 4c8afe684SRob Clark * 5c8afe684SRob Clark * This program is free software; you can redistribute it and/or modify it 6c8afe684SRob Clark * under the terms of the GNU General Public License version 2 as published by 7c8afe684SRob Clark * the Free Software Foundation. 8c8afe684SRob Clark * 9c8afe684SRob Clark * This program is distributed in the hope that it will be useful, but WITHOUT 10c8afe684SRob Clark * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11c8afe684SRob Clark * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12c8afe684SRob Clark * more details. 13c8afe684SRob Clark * 14c8afe684SRob Clark * You should have received a copy of the GNU General Public License along with 15c8afe684SRob Clark * this program. If not, see <http://www.gnu.org/licenses/>. 16c8afe684SRob Clark */ 17c8afe684SRob Clark 18c8afe684SRob Clark #include <linux/spinlock.h> 19c8afe684SRob Clark #include <linux/shmem_fs.h> 2005b84911SRob Clark #include <linux/dma-buf.h> 2101c8f1c4SDan Williams #include <linux/pfn_t.h> 22c8afe684SRob Clark 23c8afe684SRob Clark #include "msm_drv.h" 24fde5de6cSRob Clark #include "msm_fence.h" 25c8afe684SRob Clark #include "msm_gem.h" 267198e6b0SRob Clark #include "msm_gpu.h" 27871d812aSRob Clark #include "msm_mmu.h" 28c8afe684SRob Clark 290e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj); 300e08270aSSushmita Susheelendra 310e08270aSSushmita Susheelendra 32871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 33871d812aSRob Clark { 34871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 35871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 36871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 37871d812aSRob Clark priv->vram.paddr; 38871d812aSRob Clark } 39871d812aSRob Clark 40072f1f91SRob Clark static bool use_pages(struct drm_gem_object *obj) 41072f1f91SRob Clark { 42072f1f91SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 43072f1f91SRob Clark return !msm_obj->vram_node; 44072f1f91SRob Clark } 45072f1f91SRob Clark 46871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 470e08270aSSushmita Susheelendra static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) 48871d812aSRob Clark { 49871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 50871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 51871d812aSRob Clark dma_addr_t paddr; 52871d812aSRob Clark struct page **p; 53871d812aSRob Clark int ret, i; 54871d812aSRob Clark 552098105eSMichal Hocko p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 56871d812aSRob Clark if (!p) 57871d812aSRob Clark return ERR_PTR(-ENOMEM); 58871d812aSRob Clark 590e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 604e64e553SChris Wilson ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); 610e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 62871d812aSRob Clark if (ret) { 632098105eSMichal Hocko kvfree(p); 64871d812aSRob Clark return ERR_PTR(ret); 65871d812aSRob Clark } 66871d812aSRob Clark 67871d812aSRob Clark paddr = physaddr(obj); 68871d812aSRob Clark for (i = 0; i < npages; i++) { 69871d812aSRob Clark p[i] = phys_to_page(paddr); 70871d812aSRob Clark paddr += PAGE_SIZE; 71871d812aSRob Clark } 72871d812aSRob Clark 73871d812aSRob Clark return p; 74871d812aSRob Clark } 75c8afe684SRob Clark 76c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 77c8afe684SRob Clark { 78c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 79c8afe684SRob Clark 80c8afe684SRob Clark if (!msm_obj->pages) { 81c8afe684SRob Clark struct drm_device *dev = obj->dev; 82871d812aSRob Clark struct page **p; 83c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 84c8afe684SRob Clark 85072f1f91SRob Clark if (use_pages(obj)) 860cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 87871d812aSRob Clark else 88871d812aSRob Clark p = get_pages_vram(obj, npages); 89871d812aSRob Clark 90c8afe684SRob Clark if (IS_ERR(p)) { 916a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not get pages: %ld\n", 92c8afe684SRob Clark PTR_ERR(p)); 93c8afe684SRob Clark return p; 94c8afe684SRob Clark } 95c8afe684SRob Clark 9662e3a3e3SPrakash Kamliya msm_obj->pages = p; 9762e3a3e3SPrakash Kamliya 98c8afe684SRob Clark msm_obj->sgt = drm_prime_pages_to_sg(p, npages); 991f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 10062e3a3e3SPrakash Kamliya void *ptr = ERR_CAST(msm_obj->sgt); 101c8afe684SRob Clark 1026a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "failed to allocate sgt\n"); 10362e3a3e3SPrakash Kamliya msm_obj->sgt = NULL; 10462e3a3e3SPrakash Kamliya return ptr; 10562e3a3e3SPrakash Kamliya } 106c8afe684SRob Clark 107c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 108c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 109c8afe684SRob Clark */ 110c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 111c8afe684SRob Clark dma_map_sg(dev->dev, msm_obj->sgt->sgl, 112c8afe684SRob Clark msm_obj->sgt->nents, DMA_BIDIRECTIONAL); 113c8afe684SRob Clark } 114c8afe684SRob Clark 115c8afe684SRob Clark return msm_obj->pages; 116c8afe684SRob Clark } 117c8afe684SRob Clark 1180e08270aSSushmita Susheelendra static void put_pages_vram(struct drm_gem_object *obj) 1190e08270aSSushmita Susheelendra { 1200e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 1210e08270aSSushmita Susheelendra struct msm_drm_private *priv = obj->dev->dev_private; 1220e08270aSSushmita Susheelendra 1230e08270aSSushmita Susheelendra spin_lock(&priv->vram.lock); 1240e08270aSSushmita Susheelendra drm_mm_remove_node(msm_obj->vram_node); 1250e08270aSSushmita Susheelendra spin_unlock(&priv->vram.lock); 1260e08270aSSushmita Susheelendra 1270e08270aSSushmita Susheelendra kvfree(msm_obj->pages); 1280e08270aSSushmita Susheelendra } 1290e08270aSSushmita Susheelendra 130c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 131c8afe684SRob Clark { 132c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 133c8afe684SRob Clark 134c8afe684SRob Clark if (msm_obj->pages) { 1353976626eSBen Hutchings if (msm_obj->sgt) { 1363976626eSBen Hutchings /* For non-cached buffers, ensure the new 1373976626eSBen Hutchings * pages are clean because display controller, 1383976626eSBen Hutchings * GPU, etc. are not coherent: 139c8afe684SRob Clark */ 140c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 141c8afe684SRob Clark dma_unmap_sg(obj->dev->dev, msm_obj->sgt->sgl, 1423976626eSBen Hutchings msm_obj->sgt->nents, 1433976626eSBen Hutchings DMA_BIDIRECTIONAL); 14462e3a3e3SPrakash Kamliya 145c8afe684SRob Clark sg_free_table(msm_obj->sgt); 146c8afe684SRob Clark kfree(msm_obj->sgt); 1473976626eSBen Hutchings } 148c8afe684SRob Clark 149072f1f91SRob Clark if (use_pages(obj)) 150c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1510e08270aSSushmita Susheelendra else 1520e08270aSSushmita Susheelendra put_pages_vram(obj); 153871d812aSRob Clark 154c8afe684SRob Clark msm_obj->pages = NULL; 155c8afe684SRob Clark } 156c8afe684SRob Clark } 157c8afe684SRob Clark 15805b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 15905b84911SRob Clark { 1600e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 16105b84911SRob Clark struct page **p; 1620e08270aSSushmita Susheelendra 1630e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 1640e08270aSSushmita Susheelendra 1650e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 1660e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1670e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1680e08270aSSushmita Susheelendra } 1690e08270aSSushmita Susheelendra 17005b84911SRob Clark p = get_pages(obj); 1710e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 17205b84911SRob Clark return p; 17305b84911SRob Clark } 17405b84911SRob Clark 17505b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 17605b84911SRob Clark { 17705b84911SRob Clark /* when we start tracking the pin count, then do something here */ 17805b84911SRob Clark } 17905b84911SRob Clark 180c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 181c8afe684SRob Clark struct vm_area_struct *vma) 182c8afe684SRob Clark { 183c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 184c8afe684SRob Clark 185c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 186c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 187c8afe684SRob Clark 188c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 189c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 190c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 191c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 192c8afe684SRob Clark } else { 193c8afe684SRob Clark /* 194c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 195c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 196c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 197c8afe684SRob Clark */ 198c8afe684SRob Clark fput(vma->vm_file); 199c8afe684SRob Clark get_file(obj->filp); 200c8afe684SRob Clark vma->vm_pgoff = 0; 201c8afe684SRob Clark vma->vm_file = obj->filp; 202c8afe684SRob Clark 203c8afe684SRob Clark vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); 204c8afe684SRob Clark } 205c8afe684SRob Clark 206c8afe684SRob Clark return 0; 207c8afe684SRob Clark } 208c8afe684SRob Clark 209c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 210c8afe684SRob Clark { 211c8afe684SRob Clark int ret; 212c8afe684SRob Clark 213c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 214c8afe684SRob Clark if (ret) { 215c8afe684SRob Clark DBG("mmap failed: %d", ret); 216c8afe684SRob Clark return ret; 217c8afe684SRob Clark } 218c8afe684SRob Clark 219c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 220c8afe684SRob Clark } 221c8afe684SRob Clark 222a5f74ec7SSouptick Joarder vm_fault_t msm_gem_fault(struct vm_fault *vmf) 223c8afe684SRob Clark { 22411bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 225c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2260e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 227c8afe684SRob Clark struct page **pages; 228c8afe684SRob Clark unsigned long pfn; 229c8afe684SRob Clark pgoff_t pgoff; 230a5f74ec7SSouptick Joarder int err; 231a5f74ec7SSouptick Joarder vm_fault_t ret; 232c8afe684SRob Clark 2330e08270aSSushmita Susheelendra /* 2340e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2350e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 236d78d383aSRob Clark */ 237a5f74ec7SSouptick Joarder err = mutex_lock_interruptible(&msm_obj->lock); 238a5f74ec7SSouptick Joarder if (err) { 239a5f74ec7SSouptick Joarder ret = VM_FAULT_NOPAGE; 240c8afe684SRob Clark goto out; 241a5f74ec7SSouptick Joarder } 242c8afe684SRob Clark 2430e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 2440e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 2450e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2460e08270aSSushmita Susheelendra } 2470e08270aSSushmita Susheelendra 248c8afe684SRob Clark /* make sure we have pages attached now */ 249c8afe684SRob Clark pages = get_pages(obj); 250c8afe684SRob Clark if (IS_ERR(pages)) { 251a5f74ec7SSouptick Joarder ret = vmf_error(PTR_ERR(pages)); 252c8afe684SRob Clark goto out_unlock; 253c8afe684SRob Clark } 254c8afe684SRob Clark 255c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2561a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 257c8afe684SRob Clark 258871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 259c8afe684SRob Clark 2601a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 261c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 262c8afe684SRob Clark 263a5f74ec7SSouptick Joarder ret = vmf_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 264c8afe684SRob Clark out_unlock: 2650e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 266c8afe684SRob Clark out: 267a5f74ec7SSouptick Joarder return ret; 268c8afe684SRob Clark } 269c8afe684SRob Clark 270c8afe684SRob Clark /** get mmap offset */ 271c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 272c8afe684SRob Clark { 273c8afe684SRob Clark struct drm_device *dev = obj->dev; 2740e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 275c8afe684SRob Clark int ret; 276c8afe684SRob Clark 2770e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 278c8afe684SRob Clark 279c8afe684SRob Clark /* Make it mmapable */ 280c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 281c8afe684SRob Clark 282c8afe684SRob Clark if (ret) { 2836a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "could not allocate mmap offset\n"); 284c8afe684SRob Clark return 0; 285c8afe684SRob Clark } 286c8afe684SRob Clark 287c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 288c8afe684SRob Clark } 289c8afe684SRob Clark 290c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 291c8afe684SRob Clark { 292c8afe684SRob Clark uint64_t offset; 2930e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 2940e08270aSSushmita Susheelendra 2950e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 296c8afe684SRob Clark offset = mmap_offset(obj); 2970e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 298c8afe684SRob Clark return offset; 299c8afe684SRob Clark } 300c8afe684SRob Clark 3014b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3024b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3034b85f7f5SRob Clark { 3044b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3054b85f7f5SRob Clark struct msm_gem_vma *vma; 3064b85f7f5SRob Clark 3070e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3080e08270aSSushmita Susheelendra 3094b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3104b85f7f5SRob Clark if (!vma) 3114b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3124b85f7f5SRob Clark 3134b85f7f5SRob Clark vma->aspace = aspace; 3144b85f7f5SRob Clark 3154b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3164b85f7f5SRob Clark 3174b85f7f5SRob Clark return vma; 3184b85f7f5SRob Clark } 3194b85f7f5SRob Clark 3204b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3214b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3224b85f7f5SRob Clark { 3234b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3244b85f7f5SRob Clark struct msm_gem_vma *vma; 3254b85f7f5SRob Clark 3260e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3274b85f7f5SRob Clark 3284b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3294b85f7f5SRob Clark if (vma->aspace == aspace) 3304b85f7f5SRob Clark return vma; 3314b85f7f5SRob Clark } 3324b85f7f5SRob Clark 3334b85f7f5SRob Clark return NULL; 3344b85f7f5SRob Clark } 3354b85f7f5SRob Clark 3364b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3374b85f7f5SRob Clark { 3384b85f7f5SRob Clark if (!vma) 3394b85f7f5SRob Clark return; 3404b85f7f5SRob Clark 3414b85f7f5SRob Clark list_del(&vma->list); 3424b85f7f5SRob Clark kfree(vma); 3434b85f7f5SRob Clark } 3444b85f7f5SRob Clark 3450e08270aSSushmita Susheelendra /* Called with msm_obj->lock locked */ 3464fe5f65eSRob Clark static void 3474fe5f65eSRob Clark put_iova(struct drm_gem_object *obj) 3484fe5f65eSRob Clark { 3494fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3504b85f7f5SRob Clark struct msm_gem_vma *vma, *tmp; 3514fe5f65eSRob Clark 3520e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3534fe5f65eSRob Clark 3544b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 35570dc51b4SJordan Crouse msm_gem_unmap_vma(vma->aspace, vma); 3564b85f7f5SRob Clark del_vma(vma); 3574fe5f65eSRob Clark } 3584fe5f65eSRob Clark } 3594fe5f65eSRob Clark 360c0ee9794SJordan Crouse static int msm_gem_get_iova_locked(struct drm_gem_object *obj, 3618bdcd949SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 362c8afe684SRob Clark { 363c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3644b85f7f5SRob Clark struct msm_gem_vma *vma; 365c8afe684SRob Clark int ret = 0; 366c8afe684SRob Clark 367c0ee9794SJordan Crouse WARN_ON(!mutex_is_locked(&msm_obj->lock)); 368cb1e3818SRob Clark 3694b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 370871d812aSRob Clark 3714b85f7f5SRob Clark if (!vma) { 3724b85f7f5SRob Clark vma = add_vma(obj, aspace); 373c0ee9794SJordan Crouse if (IS_ERR(vma)) 374c0ee9794SJordan Crouse return PTR_ERR(vma); 3754b85f7f5SRob Clark 376c0ee9794SJordan Crouse ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT); 377c0ee9794SJordan Crouse if (ret) { 378c0ee9794SJordan Crouse del_vma(vma); 379c0ee9794SJordan Crouse return ret; 380c8afe684SRob Clark } 3814b85f7f5SRob Clark } 3824b85f7f5SRob Clark 3834b85f7f5SRob Clark *iova = vma->iova; 3844b85f7f5SRob Clark return 0; 385c0ee9794SJordan Crouse } 3864b85f7f5SRob Clark 387c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 388c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 389c0ee9794SJordan Crouse { 390c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 391c0ee9794SJordan Crouse struct msm_gem_vma *vma; 392c0ee9794SJordan Crouse struct page **pages; 393c0ee9794SJordan Crouse 394c0ee9794SJordan Crouse WARN_ON(!mutex_is_locked(&msm_obj->lock)); 395c0ee9794SJordan Crouse 396c0ee9794SJordan Crouse if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 397c0ee9794SJordan Crouse return -EBUSY; 398c0ee9794SJordan Crouse 399c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 400c0ee9794SJordan Crouse if (WARN_ON(!vma)) 401c0ee9794SJordan Crouse return -EINVAL; 402c0ee9794SJordan Crouse 403c0ee9794SJordan Crouse pages = get_pages(obj); 404c0ee9794SJordan Crouse if (IS_ERR(pages)) 405c0ee9794SJordan Crouse return PTR_ERR(pages); 406c0ee9794SJordan Crouse 407c0ee9794SJordan Crouse return msm_gem_map_vma(aspace, vma, msm_obj->sgt, 408c0ee9794SJordan Crouse obj->size >> PAGE_SHIFT); 409c0ee9794SJordan Crouse } 410c0ee9794SJordan Crouse 411c0ee9794SJordan Crouse 412c0ee9794SJordan Crouse /* get iova, taking a reference. Should have a matching put */ 413c0ee9794SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 414c0ee9794SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 415c0ee9794SJordan Crouse { 416c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 417c0ee9794SJordan Crouse u64 local; 418c0ee9794SJordan Crouse int ret; 419c0ee9794SJordan Crouse 420c0ee9794SJordan Crouse mutex_lock(&msm_obj->lock); 421c0ee9794SJordan Crouse 422c0ee9794SJordan Crouse ret = msm_gem_get_iova_locked(obj, aspace, &local); 423c0ee9794SJordan Crouse 424c0ee9794SJordan Crouse if (!ret) 425c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 426c0ee9794SJordan Crouse 427c0ee9794SJordan Crouse if (!ret) 428c0ee9794SJordan Crouse *iova = local; 429c0ee9794SJordan Crouse 4300e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 431c8afe684SRob Clark return ret; 432c8afe684SRob Clark } 433c8afe684SRob Clark 4342638d90aSRob Clark /* get iova without taking a reference, used in places where you have 4352638d90aSRob Clark * already done a 'msm_gem_get_iova()'. 4362638d90aSRob Clark */ 4378bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 4388bdcd949SRob Clark struct msm_gem_address_space *aspace) 4392638d90aSRob Clark { 4400e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4414b85f7f5SRob Clark struct msm_gem_vma *vma; 4424b85f7f5SRob Clark 4430e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4444b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 4450e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4464b85f7f5SRob Clark WARN_ON(!vma); 4474b85f7f5SRob Clark 4484b85f7f5SRob Clark return vma ? vma->iova : 0; 4492638d90aSRob Clark } 4502638d90aSRob Clark 4518bdcd949SRob Clark void msm_gem_put_iova(struct drm_gem_object *obj, 4528bdcd949SRob Clark struct msm_gem_address_space *aspace) 453c8afe684SRob Clark { 454c8afe684SRob Clark // XXX TODO .. 455c8afe684SRob Clark // NOTE: probably don't need a _locked() version.. we wouldn't 456c8afe684SRob Clark // normally unmap here, but instead just mark that it could be 457c8afe684SRob Clark // unmapped (if the iova refcnt drops to zero), but then later 458c8afe684SRob Clark // if another _get_iova_locked() fails we can start unmapping 459c8afe684SRob Clark // things that are no longer needed.. 460c8afe684SRob Clark } 461c8afe684SRob Clark 462c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 463c8afe684SRob Clark struct drm_mode_create_dumb *args) 464c8afe684SRob Clark { 465c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 466c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 467c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 468c8afe684SRob Clark MSM_BO_SCANOUT | MSM_BO_WC, &args->handle); 469c8afe684SRob Clark } 470c8afe684SRob Clark 471c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 472c8afe684SRob Clark uint32_t handle, uint64_t *offset) 473c8afe684SRob Clark { 474c8afe684SRob Clark struct drm_gem_object *obj; 475c8afe684SRob Clark int ret = 0; 476c8afe684SRob Clark 477c8afe684SRob Clark /* GEM does all our handle to object mapping */ 478a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 479c8afe684SRob Clark if (obj == NULL) { 480c8afe684SRob Clark ret = -ENOENT; 481c8afe684SRob Clark goto fail; 482c8afe684SRob Clark } 483c8afe684SRob Clark 484c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 485c8afe684SRob Clark 486dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 487c8afe684SRob Clark 488c8afe684SRob Clark fail: 489c8afe684SRob Clark return ret; 490c8afe684SRob Clark } 491c8afe684SRob Clark 492fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 493c8afe684SRob Clark { 4940e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4950e08270aSSushmita Susheelendra int ret = 0; 4960e08270aSSushmita Susheelendra 4970e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4980e08270aSSushmita Susheelendra 499fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 5006a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 501fad33f4bSRob Clark msm_obj->madv, madv); 5020e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5030e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 504c8afe684SRob Clark } 505c8afe684SRob Clark 5060e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 5070e08270aSSushmita Susheelendra * check vmap_count (is_vunmapable()) outside of msm_obj->lock. 5080e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 5090e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 5100e08270aSSushmita Susheelendra * hold msm_obj->lock) 5110e08270aSSushmita Susheelendra */ 5120e08270aSSushmita Susheelendra msm_obj->vmap_count++; 5130e08270aSSushmita Susheelendra 5140e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 5150e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 5160e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 5170e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 5180e08270aSSushmita Susheelendra goto fail; 5190e08270aSSushmita Susheelendra } 5200e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 5210e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 5220e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 5230e08270aSSushmita Susheelendra ret = -ENOMEM; 5240e08270aSSushmita Susheelendra goto fail; 5250e08270aSSushmita Susheelendra } 5260e08270aSSushmita Susheelendra } 5270e08270aSSushmita Susheelendra 5280e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5290e08270aSSushmita Susheelendra return msm_obj->vaddr; 5300e08270aSSushmita Susheelendra 5310e08270aSSushmita Susheelendra fail: 532e1e9db2cSRob Clark msm_obj->vmap_count--; 5330e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5340e08270aSSushmita Susheelendra return ERR_PTR(ret); 53518f23049SRob Clark } 53618f23049SRob Clark 537fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 538fad33f4bSRob Clark { 539fad33f4bSRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 540fad33f4bSRob Clark } 541fad33f4bSRob Clark 542fad33f4bSRob Clark /* 543fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 544fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 545fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 546fad33f4bSRob Clark * active list. 547fad33f4bSRob Clark */ 548fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 549fad33f4bSRob Clark { 550fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 551fad33f4bSRob Clark } 552fad33f4bSRob Clark 55318f23049SRob Clark void msm_gem_put_vaddr(struct drm_gem_object *obj) 55418f23049SRob Clark { 5550e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5560e08270aSSushmita Susheelendra 5570e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5580e08270aSSushmita Susheelendra WARN_ON(msm_obj->vmap_count < 1); 5590e08270aSSushmita Susheelendra msm_obj->vmap_count--; 5600e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 56118f23049SRob Clark } 56218f23049SRob Clark 5634cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 5644cd33c48SRob Clark * false or -errno. 5654cd33c48SRob Clark */ 5664cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 5674cd33c48SRob Clark { 5684cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 5694cd33c48SRob Clark 5700e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5710e08270aSSushmita Susheelendra 5724cd33c48SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 5734cd33c48SRob Clark 5744cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 5754cd33c48SRob Clark msm_obj->madv = madv; 5764cd33c48SRob Clark 5770e08270aSSushmita Susheelendra madv = msm_obj->madv; 5780e08270aSSushmita Susheelendra 5790e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5800e08270aSSushmita Susheelendra 5810e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 5824cd33c48SRob Clark } 5834cd33c48SRob Clark 5840e08270aSSushmita Susheelendra void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) 58568209390SRob Clark { 58668209390SRob Clark struct drm_device *dev = obj->dev; 58768209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 58868209390SRob Clark 58968209390SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 59068209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 59168209390SRob Clark WARN_ON(obj->import_attach); 59268209390SRob Clark 5930e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 5940e08270aSSushmita Susheelendra 59568209390SRob Clark put_iova(obj); 59668209390SRob Clark 5970e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 59868209390SRob Clark 59968209390SRob Clark put_pages(obj); 60068209390SRob Clark 60168209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 60268209390SRob Clark 60368209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 60468209390SRob Clark drm_gem_free_mmap_offset(obj); 60568209390SRob Clark 60668209390SRob Clark /* Our goal here is to return as much of the memory as 60768209390SRob Clark * is possible back to the system as we are called from OOM. 60868209390SRob Clark * To do this we must instruct the shmfs to drop all of its 60968209390SRob Clark * backing pages, *now*. 61068209390SRob Clark */ 61168209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 61268209390SRob Clark 61368209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 61468209390SRob Clark 0, (loff_t)-1); 6150e08270aSSushmita Susheelendra 6160e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 61768209390SRob Clark } 61868209390SRob Clark 6190e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj) 620e1e9db2cSRob Clark { 621e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 622e1e9db2cSRob Clark 6230e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 6240e08270aSSushmita Susheelendra 625e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 626e1e9db2cSRob Clark return; 627e1e9db2cSRob Clark 628e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 629e1e9db2cSRob Clark msm_obj->vaddr = NULL; 630e1e9db2cSRob Clark } 631e1e9db2cSRob Clark 6320e08270aSSushmita Susheelendra void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) 6330e08270aSSushmita Susheelendra { 6340e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6350e08270aSSushmita Susheelendra 6360e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6370e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 6380e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6390e08270aSSushmita Susheelendra } 6400e08270aSSushmita Susheelendra 641b6295f9aSRob Clark /* must be called before _move_to_active().. */ 642b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 643b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 644b6295f9aSRob Clark { 645b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 646b6295f9aSRob Clark struct reservation_object_list *fobj; 647f54d1867SChris Wilson struct dma_fence *fence; 648b6295f9aSRob Clark int i, ret; 649b6295f9aSRob Clark 650b6295f9aSRob Clark fobj = reservation_object_get_list(msm_obj->resv); 651b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 652b6295f9aSRob Clark fence = reservation_object_get_excl(msm_obj->resv); 653b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 654b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 655f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 656b6295f9aSRob Clark if (ret) 657b6295f9aSRob Clark return ret; 658b6295f9aSRob Clark } 659b6295f9aSRob Clark } 660b6295f9aSRob Clark 661b6295f9aSRob Clark if (!exclusive || !fobj) 662b6295f9aSRob Clark return 0; 663b6295f9aSRob Clark 664b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 665b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 666b6295f9aSRob Clark reservation_object_held(msm_obj->resv)); 667b6295f9aSRob Clark if (fence->context != fctx->context) { 668f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 669b6295f9aSRob Clark if (ret) 670b6295f9aSRob Clark return ret; 671b6295f9aSRob Clark } 672b6295f9aSRob Clark } 673b6295f9aSRob Clark 674b6295f9aSRob Clark return 0; 675b6295f9aSRob Clark } 676b6295f9aSRob Clark 6777198e6b0SRob Clark void msm_gem_move_to_active(struct drm_gem_object *obj, 678f54d1867SChris Wilson struct msm_gpu *gpu, bool exclusive, struct dma_fence *fence) 6797198e6b0SRob Clark { 6807198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6814cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 6827198e6b0SRob Clark msm_obj->gpu = gpu; 683b6295f9aSRob Clark if (exclusive) 684b6295f9aSRob Clark reservation_object_add_excl_fence(msm_obj->resv, fence); 685bf6811f3SRob Clark else 686b6295f9aSRob Clark reservation_object_add_shared_fence(msm_obj->resv, fence); 6877198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 6887198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 6897198e6b0SRob Clark } 6907198e6b0SRob Clark 6917198e6b0SRob Clark void msm_gem_move_to_inactive(struct drm_gem_object *obj) 6927198e6b0SRob Clark { 6937198e6b0SRob Clark struct drm_device *dev = obj->dev; 6947198e6b0SRob Clark struct msm_drm_private *priv = dev->dev_private; 6957198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6967198e6b0SRob Clark 6977198e6b0SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 6987198e6b0SRob Clark 6997198e6b0SRob Clark msm_obj->gpu = NULL; 7007198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7017198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 7027198e6b0SRob Clark } 7037198e6b0SRob Clark 704ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 705ba00c3f2SRob Clark { 706b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 707b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 708f755e227SChris Wilson unsigned long remain = 709f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 710f755e227SChris Wilson long ret; 711b6295f9aSRob Clark 712b6295f9aSRob Clark ret = reservation_object_wait_timeout_rcu(msm_obj->resv, write, 713f755e227SChris Wilson true, remain); 714f755e227SChris Wilson if (ret == 0) 715f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 716f755e227SChris Wilson else if (ret < 0) 717f755e227SChris Wilson return ret; 718ba00c3f2SRob Clark 7197198e6b0SRob Clark /* TODO cache maintenance */ 7207198e6b0SRob Clark 721b6295f9aSRob Clark return 0; 7227198e6b0SRob Clark } 7237198e6b0SRob Clark 7247198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 7257198e6b0SRob Clark { 7267198e6b0SRob Clark /* TODO cache maintenance */ 727c8afe684SRob Clark return 0; 728c8afe684SRob Clark } 729c8afe684SRob Clark 730c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 731f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 732b6295f9aSRob Clark struct seq_file *m) 733b6295f9aSRob Clark { 734f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 735b6295f9aSRob Clark seq_printf(m, "\t%9s: %s %s seq %u\n", type, 736b6295f9aSRob Clark fence->ops->get_driver_name(fence), 737b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 738b6295f9aSRob Clark fence->seqno); 739b6295f9aSRob Clark } 740b6295f9aSRob Clark 741c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 742c8afe684SRob Clark { 743c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 744b6295f9aSRob Clark struct reservation_object *robj = msm_obj->resv; 745b6295f9aSRob Clark struct reservation_object_list *fobj; 746f54d1867SChris Wilson struct dma_fence *fence; 7474b85f7f5SRob Clark struct msm_gem_vma *vma; 748c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 7494cd33c48SRob Clark const char *madv; 750c8afe684SRob Clark 7510e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 752b6295f9aSRob Clark 7534cd33c48SRob Clark switch (msm_obj->madv) { 7544cd33c48SRob Clark case __MSM_MADV_PURGED: 7554cd33c48SRob Clark madv = " purged"; 7564cd33c48SRob Clark break; 7574cd33c48SRob Clark case MSM_MADV_DONTNEED: 7584cd33c48SRob Clark madv = " purgeable"; 7594cd33c48SRob Clark break; 7604cd33c48SRob Clark case MSM_MADV_WILLNEED: 7614cd33c48SRob Clark default: 7624cd33c48SRob Clark madv = ""; 7634cd33c48SRob Clark break; 7644cd33c48SRob Clark } 7654cd33c48SRob Clark 766667ce33eSRob Clark seq_printf(m, "%08x: %c %2d (%2d) %08llx %p\t", 7677198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 7682c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 769667ce33eSRob Clark off, msm_obj->vaddr); 770667ce33eSRob Clark 7714b85f7f5SRob Clark /* FIXME: we need to print the address space here too */ 7724b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) 7734b85f7f5SRob Clark seq_printf(m, " %08llx", vma->iova); 774667ce33eSRob Clark 775667ce33eSRob Clark seq_printf(m, " %zu%s\n", obj->size, madv); 776b6295f9aSRob Clark 777b6295f9aSRob Clark rcu_read_lock(); 778b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 779b6295f9aSRob Clark if (fobj) { 780b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 781b6295f9aSRob Clark 782b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 783b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 784b6295f9aSRob Clark describe_fence(fence, "Shared", m); 785b6295f9aSRob Clark } 786b6295f9aSRob Clark } 787b6295f9aSRob Clark 788b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 789b6295f9aSRob Clark if (fence) 790b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 791b6295f9aSRob Clark rcu_read_unlock(); 7920e08270aSSushmita Susheelendra 7930e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 794c8afe684SRob Clark } 795c8afe684SRob Clark 796c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 797c8afe684SRob Clark { 798c8afe684SRob Clark struct msm_gem_object *msm_obj; 799c8afe684SRob Clark int count = 0; 800c8afe684SRob Clark size_t size = 0; 801c8afe684SRob Clark 802c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 803c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 804c8afe684SRob Clark seq_printf(m, " "); 805c8afe684SRob Clark msm_gem_describe(obj, m); 806c8afe684SRob Clark count++; 807c8afe684SRob Clark size += obj->size; 808c8afe684SRob Clark } 809c8afe684SRob Clark 810c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 811c8afe684SRob Clark } 812c8afe684SRob Clark #endif 813c8afe684SRob Clark 814d71b6bd8SRob Clark /* don't call directly! Use drm_gem_object_put() and friends */ 815c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 816c8afe684SRob Clark { 817c8afe684SRob Clark struct drm_device *dev = obj->dev; 818c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 819c8afe684SRob Clark 820c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 821c8afe684SRob Clark 8227198e6b0SRob Clark /* object should not be on active list: */ 8237198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 8247198e6b0SRob Clark 825c8afe684SRob Clark list_del(&msm_obj->mm_list); 826c8afe684SRob Clark 8270e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 8280e08270aSSushmita Susheelendra 8294fe5f65eSRob Clark put_iova(obj); 830c8afe684SRob Clark 83105b84911SRob Clark if (obj->import_attach) { 83205b84911SRob Clark if (msm_obj->vaddr) 83305b84911SRob Clark dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); 83405b84911SRob Clark 83505b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 83605b84911SRob Clark * ours, just free the array we allocated: 83705b84911SRob Clark */ 83805b84911SRob Clark if (msm_obj->pages) 8392098105eSMichal Hocko kvfree(msm_obj->pages); 84005b84911SRob Clark 841f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 84205b84911SRob Clark } else { 8430e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 844c8afe684SRob Clark put_pages(obj); 84505b84911SRob Clark } 846c8afe684SRob Clark 8477198e6b0SRob Clark if (msm_obj->resv == &msm_obj->_resv) 8487198e6b0SRob Clark reservation_object_fini(msm_obj->resv); 8497198e6b0SRob Clark 850c8afe684SRob Clark drm_gem_object_release(obj); 851c8afe684SRob Clark 8520e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 853c8afe684SRob Clark kfree(msm_obj); 854c8afe684SRob Clark } 855c8afe684SRob Clark 856c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 857c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 858c8afe684SRob Clark uint32_t size, uint32_t flags, uint32_t *handle) 859c8afe684SRob Clark { 860c8afe684SRob Clark struct drm_gem_object *obj; 861c8afe684SRob Clark int ret; 862c8afe684SRob Clark 863c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 864c8afe684SRob Clark 865c8afe684SRob Clark if (IS_ERR(obj)) 866c8afe684SRob Clark return PTR_ERR(obj); 867c8afe684SRob Clark 868c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 869c8afe684SRob Clark 870c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 871dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 872c8afe684SRob Clark 873c8afe684SRob Clark return ret; 874c8afe684SRob Clark } 875c8afe684SRob Clark 87605b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 87705b84911SRob Clark uint32_t size, uint32_t flags, 87879f0e202SRob Clark struct reservation_object *resv, 8790e08270aSSushmita Susheelendra struct drm_gem_object **obj, 8800e08270aSSushmita Susheelendra bool struct_mutex_locked) 881c8afe684SRob Clark { 882c8afe684SRob Clark struct msm_drm_private *priv = dev->dev_private; 883c8afe684SRob Clark struct msm_gem_object *msm_obj; 884c8afe684SRob Clark 885c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 886c8afe684SRob Clark case MSM_BO_UNCACHED: 887c8afe684SRob Clark case MSM_BO_CACHED: 888c8afe684SRob Clark case MSM_BO_WC: 889c8afe684SRob Clark break; 890c8afe684SRob Clark default: 8916a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 892c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 89305b84911SRob Clark return -EINVAL; 894c8afe684SRob Clark } 895c8afe684SRob Clark 896667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 89705b84911SRob Clark if (!msm_obj) 89805b84911SRob Clark return -ENOMEM; 899c8afe684SRob Clark 9000e08270aSSushmita Susheelendra mutex_init(&msm_obj->lock); 9010e08270aSSushmita Susheelendra 902c8afe684SRob Clark msm_obj->flags = flags; 9034cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 904c8afe684SRob Clark 90579f0e202SRob Clark if (resv) { 90679f0e202SRob Clark msm_obj->resv = resv; 90779f0e202SRob Clark } else { 9087198e6b0SRob Clark msm_obj->resv = &msm_obj->_resv; 9097198e6b0SRob Clark reservation_object_init(msm_obj->resv); 91079f0e202SRob Clark } 911c8afe684SRob Clark 9127198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 9134b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 9144b85f7f5SRob Clark 9150e08270aSSushmita Susheelendra if (struct_mutex_locked) { 9160e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 917c8afe684SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9180e08270aSSushmita Susheelendra } else { 9190e08270aSSushmita Susheelendra mutex_lock(&dev->struct_mutex); 9200e08270aSSushmita Susheelendra list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9210e08270aSSushmita Susheelendra mutex_unlock(&dev->struct_mutex); 9220e08270aSSushmita Susheelendra } 923c8afe684SRob Clark 92405b84911SRob Clark *obj = &msm_obj->base; 92505b84911SRob Clark 92605b84911SRob Clark return 0; 92705b84911SRob Clark } 92805b84911SRob Clark 9290e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 9300e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 93105b84911SRob Clark { 932f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 933871d812aSRob Clark struct drm_gem_object *obj = NULL; 934f4839bd5SRob Clark bool use_vram = false; 93505b84911SRob Clark int ret; 93605b84911SRob Clark 93705b84911SRob Clark size = PAGE_ALIGN(size); 93805b84911SRob Clark 939f4839bd5SRob Clark if (!iommu_present(&platform_bus_type)) 940f4839bd5SRob Clark use_vram = true; 941f4839bd5SRob Clark else if ((flags & MSM_BO_STOLEN) && priv->vram.size) 942f4839bd5SRob Clark use_vram = true; 943f4839bd5SRob Clark 944f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 945f4839bd5SRob Clark return ERR_PTR(-EINVAL); 946f4839bd5SRob Clark 9471a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 9481a5dff5dSJordan Crouse * infrastructure grumpy 9491a5dff5dSJordan Crouse */ 9501a5dff5dSJordan Crouse if (size == 0) 9511a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 9521a5dff5dSJordan Crouse 9530e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, flags, NULL, &obj, struct_mutex_locked); 95405b84911SRob Clark if (ret) 95505b84911SRob Clark goto fail; 95605b84911SRob Clark 957f4839bd5SRob Clark if (use_vram) { 9584b85f7f5SRob Clark struct msm_gem_vma *vma; 959f4839bd5SRob Clark struct page **pages; 960b3949a9aSHans Verkuil struct msm_gem_object *msm_obj = to_msm_bo(obj); 961b3949a9aSHans Verkuil 962b3949a9aSHans Verkuil mutex_lock(&msm_obj->lock); 963f4839bd5SRob Clark 9644b85f7f5SRob Clark vma = add_vma(obj, NULL); 965b3949a9aSHans Verkuil mutex_unlock(&msm_obj->lock); 9664b85f7f5SRob Clark if (IS_ERR(vma)) { 9674b85f7f5SRob Clark ret = PTR_ERR(vma); 9684b85f7f5SRob Clark goto fail; 9694b85f7f5SRob Clark } 9704b85f7f5SRob Clark 9714b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 9724b85f7f5SRob Clark 973f4839bd5SRob Clark drm_gem_private_object_init(dev, obj, size); 974f4839bd5SRob Clark 975f4839bd5SRob Clark pages = get_pages(obj); 976f4839bd5SRob Clark if (IS_ERR(pages)) { 977f4839bd5SRob Clark ret = PTR_ERR(pages); 978f4839bd5SRob Clark goto fail; 979f4839bd5SRob Clark } 9804b85f7f5SRob Clark 9814b85f7f5SRob Clark vma->iova = physaddr(obj); 982f4839bd5SRob Clark } else { 98305b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 98405b84911SRob Clark if (ret) 98505b84911SRob Clark goto fail; 986871d812aSRob Clark } 98705b84911SRob Clark 98805b84911SRob Clark return obj; 98905b84911SRob Clark 99005b84911SRob Clark fail: 991dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 99205b84911SRob Clark return ERR_PTR(ret); 99305b84911SRob Clark } 99405b84911SRob Clark 9950e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 9960e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 9970e08270aSSushmita Susheelendra { 9980e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 9990e08270aSSushmita Susheelendra } 10000e08270aSSushmita Susheelendra 10010e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 10020e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 10030e08270aSSushmita Susheelendra { 10040e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 10050e08270aSSushmita Susheelendra } 10060e08270aSSushmita Susheelendra 100705b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 100879f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 100905b84911SRob Clark { 101005b84911SRob Clark struct msm_gem_object *msm_obj; 101105b84911SRob Clark struct drm_gem_object *obj; 101279f0e202SRob Clark uint32_t size; 101305b84911SRob Clark int ret, npages; 101405b84911SRob Clark 1015871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1016871d812aSRob Clark if (!iommu_present(&platform_bus_type)) { 10176a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1018871d812aSRob Clark return ERR_PTR(-EINVAL); 1019871d812aSRob Clark } 1020871d812aSRob Clark 102179f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 102205b84911SRob Clark 10230e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, MSM_BO_WC, dmabuf->resv, &obj, false); 102405b84911SRob Clark if (ret) 102505b84911SRob Clark goto fail; 102605b84911SRob Clark 102705b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 102805b84911SRob Clark 102905b84911SRob Clark npages = size / PAGE_SIZE; 103005b84911SRob Clark 103105b84911SRob Clark msm_obj = to_msm_bo(obj); 10320e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 103305b84911SRob Clark msm_obj->sgt = sgt; 10342098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 103505b84911SRob Clark if (!msm_obj->pages) { 10360e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 103705b84911SRob Clark ret = -ENOMEM; 103805b84911SRob Clark goto fail; 103905b84911SRob Clark } 104005b84911SRob Clark 104105b84911SRob Clark ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); 10420e08270aSSushmita Susheelendra if (ret) { 10430e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 104405b84911SRob Clark goto fail; 10450e08270aSSushmita Susheelendra } 104605b84911SRob Clark 10470e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1048c8afe684SRob Clark return obj; 1049c8afe684SRob Clark 1050c8afe684SRob Clark fail: 1051dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 1052c8afe684SRob Clark return ERR_PTR(ret); 1053c8afe684SRob Clark } 10548223286dSJordan Crouse 10558223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10568223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10578223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 10588223286dSJordan Crouse { 10598223286dSJordan Crouse void *vaddr; 10608223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 10618223286dSJordan Crouse int ret; 10628223286dSJordan Crouse 10638223286dSJordan Crouse if (IS_ERR(obj)) 10648223286dSJordan Crouse return ERR_CAST(obj); 10658223286dSJordan Crouse 10668223286dSJordan Crouse if (iova) { 10678223286dSJordan Crouse ret = msm_gem_get_iova(obj, aspace, iova); 106893f7abf1SJordan Crouse if (ret) 106993f7abf1SJordan Crouse goto err; 10708223286dSJordan Crouse } 10718223286dSJordan Crouse 10728223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1073c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 10748223286dSJordan Crouse msm_gem_put_iova(obj, aspace); 107593f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 107693f7abf1SJordan Crouse goto err; 10778223286dSJordan Crouse } 10788223286dSJordan Crouse 10798223286dSJordan Crouse if (bo) 10808223286dSJordan Crouse *bo = obj; 10818223286dSJordan Crouse 10828223286dSJordan Crouse return vaddr; 108393f7abf1SJordan Crouse err: 108493f7abf1SJordan Crouse if (locked) 108593f7abf1SJordan Crouse drm_gem_object_put(obj); 108693f7abf1SJordan Crouse else 108793f7abf1SJordan Crouse drm_gem_object_put_unlocked(obj); 108893f7abf1SJordan Crouse 108993f7abf1SJordan Crouse return ERR_PTR(ret); 109093f7abf1SJordan Crouse 10918223286dSJordan Crouse } 10928223286dSJordan Crouse 10938223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10948223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10958223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 10968223286dSJordan Crouse { 10978223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 10988223286dSJordan Crouse } 10998223286dSJordan Crouse 11008223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 11018223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 11028223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 11038223286dSJordan Crouse { 11048223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 11058223286dSJordan Crouse } 11061e29dff0SJordan Crouse 11071e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 11081e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 11091e29dff0SJordan Crouse { 11101e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 11111e29dff0SJordan Crouse return; 11121e29dff0SJordan Crouse 11131e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 11141e29dff0SJordan Crouse msm_gem_put_iova(bo, aspace); 11151e29dff0SJordan Crouse 11161e29dff0SJordan Crouse if (locked) 11171e29dff0SJordan Crouse drm_gem_object_put(bo); 11181e29dff0SJordan Crouse else 11191e29dff0SJordan Crouse drm_gem_object_put_unlocked(bo); 11201e29dff0SJordan Crouse } 1121