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) { 3557ad0e8cfSJordan Crouse msm_gem_purge_vma(vma->aspace, vma); 3567ad0e8cfSJordan Crouse msm_gem_close_vma(vma->aspace, vma); 3574b85f7f5SRob Clark del_vma(vma); 3584fe5f65eSRob Clark } 3594fe5f65eSRob Clark } 3604fe5f65eSRob Clark 361c0ee9794SJordan Crouse static int msm_gem_get_iova_locked(struct drm_gem_object *obj, 3628bdcd949SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 363c8afe684SRob Clark { 364c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3654b85f7f5SRob Clark struct msm_gem_vma *vma; 366c8afe684SRob Clark int ret = 0; 367c8afe684SRob Clark 368c0ee9794SJordan Crouse WARN_ON(!mutex_is_locked(&msm_obj->lock)); 369cb1e3818SRob Clark 3704b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 371871d812aSRob Clark 3724b85f7f5SRob Clark if (!vma) { 3734b85f7f5SRob Clark vma = add_vma(obj, aspace); 374c0ee9794SJordan Crouse if (IS_ERR(vma)) 375c0ee9794SJordan Crouse return PTR_ERR(vma); 3764b85f7f5SRob Clark 377c0ee9794SJordan Crouse ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT); 378c0ee9794SJordan Crouse if (ret) { 379c0ee9794SJordan Crouse del_vma(vma); 380c0ee9794SJordan Crouse return ret; 381c8afe684SRob Clark } 3824b85f7f5SRob Clark } 3834b85f7f5SRob Clark 3844b85f7f5SRob Clark *iova = vma->iova; 3854b85f7f5SRob Clark return 0; 386c0ee9794SJordan Crouse } 3874b85f7f5SRob Clark 388c0ee9794SJordan Crouse static int msm_gem_pin_iova(struct drm_gem_object *obj, 389c0ee9794SJordan Crouse struct msm_gem_address_space *aspace) 390c0ee9794SJordan Crouse { 391c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 392c0ee9794SJordan Crouse struct msm_gem_vma *vma; 393c0ee9794SJordan Crouse struct page **pages; 394c0ee9794SJordan Crouse 395c0ee9794SJordan Crouse WARN_ON(!mutex_is_locked(&msm_obj->lock)); 396c0ee9794SJordan Crouse 397c0ee9794SJordan Crouse if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) 398c0ee9794SJordan Crouse return -EBUSY; 399c0ee9794SJordan Crouse 400c0ee9794SJordan Crouse vma = lookup_vma(obj, aspace); 401c0ee9794SJordan Crouse if (WARN_ON(!vma)) 402c0ee9794SJordan Crouse return -EINVAL; 403c0ee9794SJordan Crouse 404c0ee9794SJordan Crouse pages = get_pages(obj); 405c0ee9794SJordan Crouse if (IS_ERR(pages)) 406c0ee9794SJordan Crouse return PTR_ERR(pages); 407c0ee9794SJordan Crouse 408c0ee9794SJordan Crouse return msm_gem_map_vma(aspace, vma, msm_obj->sgt, 409c0ee9794SJordan Crouse obj->size >> PAGE_SHIFT); 410c0ee9794SJordan Crouse } 411c0ee9794SJordan Crouse 4129fe041f6SJordan Crouse /* get iova and pin it. Should have a matching put */ 4139fe041f6SJordan Crouse int msm_gem_get_and_pin_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 4347ad0e8cfSJordan Crouse /* 4357ad0e8cfSJordan Crouse * Get an iova but don't pin it. Doesn't need a put because iovas are currently 4367ad0e8cfSJordan Crouse * valid for the life of the object 4377ad0e8cfSJordan Crouse */ 4389fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 4399fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 4409fe041f6SJordan Crouse { 4419fe041f6SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 4429fe041f6SJordan Crouse int ret; 4439fe041f6SJordan Crouse 4449fe041f6SJordan Crouse mutex_lock(&msm_obj->lock); 4459fe041f6SJordan Crouse ret = msm_gem_get_iova_locked(obj, aspace, iova); 4469fe041f6SJordan Crouse mutex_unlock(&msm_obj->lock); 4479fe041f6SJordan Crouse 4489fe041f6SJordan Crouse return ret; 4499fe041f6SJordan Crouse } 4509fe041f6SJordan Crouse 4512638d90aSRob Clark /* get iova without taking a reference, used in places where you have 4529fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 4532638d90aSRob Clark */ 4548bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 4558bdcd949SRob Clark struct msm_gem_address_space *aspace) 4562638d90aSRob Clark { 4570e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4584b85f7f5SRob Clark struct msm_gem_vma *vma; 4594b85f7f5SRob Clark 4600e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4614b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 4620e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4634b85f7f5SRob Clark WARN_ON(!vma); 4644b85f7f5SRob Clark 4654b85f7f5SRob Clark return vma ? vma->iova : 0; 4662638d90aSRob Clark } 4672638d90aSRob Clark 4687ad0e8cfSJordan Crouse /* 4697ad0e8cfSJordan Crouse * Unpin a iova by updating the reference counts. The memory isn't actually 4707ad0e8cfSJordan Crouse * purged until something else (shrinker, mm_notifier, destroy, etc) decides 4717ad0e8cfSJordan Crouse * to get rid of it 4727ad0e8cfSJordan Crouse */ 4737ad0e8cfSJordan Crouse void msm_gem_unpin_iova(struct drm_gem_object *obj, 4748bdcd949SRob Clark struct msm_gem_address_space *aspace) 475c8afe684SRob Clark { 4767ad0e8cfSJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 4777ad0e8cfSJordan Crouse struct msm_gem_vma *vma; 4787ad0e8cfSJordan Crouse 4797ad0e8cfSJordan Crouse mutex_lock(&msm_obj->lock); 4807ad0e8cfSJordan Crouse vma = lookup_vma(obj, aspace); 4817ad0e8cfSJordan Crouse 4827ad0e8cfSJordan Crouse if (!WARN_ON(!vma)) 4837ad0e8cfSJordan Crouse msm_gem_unmap_vma(aspace, vma); 4847ad0e8cfSJordan Crouse 4857ad0e8cfSJordan Crouse mutex_unlock(&msm_obj->lock); 486c8afe684SRob Clark } 487c8afe684SRob Clark 488c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 489c8afe684SRob Clark struct drm_mode_create_dumb *args) 490c8afe684SRob Clark { 491c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 492c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 493c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 4940815d774SJordan Crouse MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb"); 495c8afe684SRob Clark } 496c8afe684SRob Clark 497c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 498c8afe684SRob Clark uint32_t handle, uint64_t *offset) 499c8afe684SRob Clark { 500c8afe684SRob Clark struct drm_gem_object *obj; 501c8afe684SRob Clark int ret = 0; 502c8afe684SRob Clark 503c8afe684SRob Clark /* GEM does all our handle to object mapping */ 504a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 505c8afe684SRob Clark if (obj == NULL) { 506c8afe684SRob Clark ret = -ENOENT; 507c8afe684SRob Clark goto fail; 508c8afe684SRob Clark } 509c8afe684SRob Clark 510c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 511c8afe684SRob Clark 512dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 513c8afe684SRob Clark 514c8afe684SRob Clark fail: 515c8afe684SRob Clark return ret; 516c8afe684SRob Clark } 517c8afe684SRob Clark 518fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 519c8afe684SRob Clark { 5200e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5210e08270aSSushmita Susheelendra int ret = 0; 5220e08270aSSushmita Susheelendra 5230e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5240e08270aSSushmita Susheelendra 525fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 5266a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 527fad33f4bSRob Clark msm_obj->madv, madv); 5280e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5290e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 530c8afe684SRob Clark } 531c8afe684SRob Clark 5320e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 5330e08270aSSushmita Susheelendra * check vmap_count (is_vunmapable()) outside of msm_obj->lock. 5340e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 5350e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 5360e08270aSSushmita Susheelendra * hold msm_obj->lock) 5370e08270aSSushmita Susheelendra */ 5380e08270aSSushmita Susheelendra msm_obj->vmap_count++; 5390e08270aSSushmita Susheelendra 5400e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 5410e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 5420e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 5430e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 5440e08270aSSushmita Susheelendra goto fail; 5450e08270aSSushmita Susheelendra } 5460e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 5470e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 5480e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 5490e08270aSSushmita Susheelendra ret = -ENOMEM; 5500e08270aSSushmita Susheelendra goto fail; 5510e08270aSSushmita Susheelendra } 5520e08270aSSushmita Susheelendra } 5530e08270aSSushmita Susheelendra 5540e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5550e08270aSSushmita Susheelendra return msm_obj->vaddr; 5560e08270aSSushmita Susheelendra 5570e08270aSSushmita Susheelendra fail: 558e1e9db2cSRob Clark msm_obj->vmap_count--; 5590e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5600e08270aSSushmita Susheelendra return ERR_PTR(ret); 56118f23049SRob Clark } 56218f23049SRob Clark 563fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 564fad33f4bSRob Clark { 565fad33f4bSRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 566fad33f4bSRob Clark } 567fad33f4bSRob Clark 568fad33f4bSRob Clark /* 569fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 570fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 571fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 572fad33f4bSRob Clark * active list. 573fad33f4bSRob Clark */ 574fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 575fad33f4bSRob Clark { 576fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 577fad33f4bSRob Clark } 578fad33f4bSRob Clark 57918f23049SRob Clark void msm_gem_put_vaddr(struct drm_gem_object *obj) 58018f23049SRob Clark { 5810e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5820e08270aSSushmita Susheelendra 5830e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5840e08270aSSushmita Susheelendra WARN_ON(msm_obj->vmap_count < 1); 5850e08270aSSushmita Susheelendra msm_obj->vmap_count--; 5860e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 58718f23049SRob Clark } 58818f23049SRob Clark 5894cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 5904cd33c48SRob Clark * false or -errno. 5914cd33c48SRob Clark */ 5924cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 5934cd33c48SRob Clark { 5944cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 5954cd33c48SRob Clark 5960e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5970e08270aSSushmita Susheelendra 5984cd33c48SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 5994cd33c48SRob Clark 6004cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 6014cd33c48SRob Clark msm_obj->madv = madv; 6024cd33c48SRob Clark 6030e08270aSSushmita Susheelendra madv = msm_obj->madv; 6040e08270aSSushmita Susheelendra 6050e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6060e08270aSSushmita Susheelendra 6070e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 6084cd33c48SRob Clark } 6094cd33c48SRob Clark 6100e08270aSSushmita Susheelendra void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) 61168209390SRob Clark { 61268209390SRob Clark struct drm_device *dev = obj->dev; 61368209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 61468209390SRob Clark 61568209390SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 61668209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 61768209390SRob Clark WARN_ON(obj->import_attach); 61868209390SRob Clark 6190e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6200e08270aSSushmita Susheelendra 62168209390SRob Clark put_iova(obj); 62268209390SRob Clark 6230e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 62468209390SRob Clark 62568209390SRob Clark put_pages(obj); 62668209390SRob Clark 62768209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 62868209390SRob Clark 62968209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 63068209390SRob Clark drm_gem_free_mmap_offset(obj); 63168209390SRob Clark 63268209390SRob Clark /* Our goal here is to return as much of the memory as 63368209390SRob Clark * is possible back to the system as we are called from OOM. 63468209390SRob Clark * To do this we must instruct the shmfs to drop all of its 63568209390SRob Clark * backing pages, *now*. 63668209390SRob Clark */ 63768209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 63868209390SRob Clark 63968209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 64068209390SRob Clark 0, (loff_t)-1); 6410e08270aSSushmita Susheelendra 6420e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 64368209390SRob Clark } 64468209390SRob Clark 6450e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj) 646e1e9db2cSRob Clark { 647e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 648e1e9db2cSRob Clark 6490e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 6500e08270aSSushmita Susheelendra 651e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 652e1e9db2cSRob Clark return; 653e1e9db2cSRob Clark 654e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 655e1e9db2cSRob Clark msm_obj->vaddr = NULL; 656e1e9db2cSRob Clark } 657e1e9db2cSRob Clark 6580e08270aSSushmita Susheelendra void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) 6590e08270aSSushmita Susheelendra { 6600e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6610e08270aSSushmita Susheelendra 6620e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6630e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 6640e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6650e08270aSSushmita Susheelendra } 6660e08270aSSushmita Susheelendra 667b6295f9aSRob Clark /* must be called before _move_to_active().. */ 668b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 669b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 670b6295f9aSRob Clark { 671b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 672b6295f9aSRob Clark struct reservation_object_list *fobj; 673f54d1867SChris Wilson struct dma_fence *fence; 674b6295f9aSRob Clark int i, ret; 675b6295f9aSRob Clark 676b6295f9aSRob Clark fobj = reservation_object_get_list(msm_obj->resv); 677b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 678b6295f9aSRob Clark fence = reservation_object_get_excl(msm_obj->resv); 679b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 680b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 681f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 682b6295f9aSRob Clark if (ret) 683b6295f9aSRob Clark return ret; 684b6295f9aSRob Clark } 685b6295f9aSRob Clark } 686b6295f9aSRob Clark 687b6295f9aSRob Clark if (!exclusive || !fobj) 688b6295f9aSRob Clark return 0; 689b6295f9aSRob Clark 690b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 691b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 692b6295f9aSRob Clark reservation_object_held(msm_obj->resv)); 693b6295f9aSRob Clark if (fence->context != fctx->context) { 694f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 695b6295f9aSRob Clark if (ret) 696b6295f9aSRob Clark return ret; 697b6295f9aSRob Clark } 698b6295f9aSRob Clark } 699b6295f9aSRob Clark 700b6295f9aSRob Clark return 0; 701b6295f9aSRob Clark } 702b6295f9aSRob Clark 7037198e6b0SRob Clark void msm_gem_move_to_active(struct drm_gem_object *obj, 704f54d1867SChris Wilson struct msm_gpu *gpu, bool exclusive, struct dma_fence *fence) 7057198e6b0SRob Clark { 7067198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7074cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 7087198e6b0SRob Clark msm_obj->gpu = gpu; 709b6295f9aSRob Clark if (exclusive) 710b6295f9aSRob Clark reservation_object_add_excl_fence(msm_obj->resv, fence); 711bf6811f3SRob Clark else 712b6295f9aSRob Clark reservation_object_add_shared_fence(msm_obj->resv, fence); 7137198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7147198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 7157198e6b0SRob Clark } 7167198e6b0SRob Clark 7177198e6b0SRob Clark void msm_gem_move_to_inactive(struct drm_gem_object *obj) 7187198e6b0SRob Clark { 7197198e6b0SRob Clark struct drm_device *dev = obj->dev; 7207198e6b0SRob Clark struct msm_drm_private *priv = dev->dev_private; 7217198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7227198e6b0SRob Clark 7237198e6b0SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 7247198e6b0SRob Clark 7257198e6b0SRob Clark msm_obj->gpu = NULL; 7267198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7277198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 7287198e6b0SRob Clark } 7297198e6b0SRob Clark 730ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 731ba00c3f2SRob Clark { 732b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 733b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 734f755e227SChris Wilson unsigned long remain = 735f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 736f755e227SChris Wilson long ret; 737b6295f9aSRob Clark 738b6295f9aSRob Clark ret = reservation_object_wait_timeout_rcu(msm_obj->resv, write, 739f755e227SChris Wilson true, remain); 740f755e227SChris Wilson if (ret == 0) 741f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 742f755e227SChris Wilson else if (ret < 0) 743f755e227SChris Wilson return ret; 744ba00c3f2SRob Clark 7457198e6b0SRob Clark /* TODO cache maintenance */ 7467198e6b0SRob Clark 747b6295f9aSRob Clark return 0; 7487198e6b0SRob Clark } 7497198e6b0SRob Clark 7507198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 7517198e6b0SRob Clark { 7527198e6b0SRob Clark /* TODO cache maintenance */ 753c8afe684SRob Clark return 0; 754c8afe684SRob Clark } 755c8afe684SRob Clark 756c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 757f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 758b6295f9aSRob Clark struct seq_file *m) 759b6295f9aSRob Clark { 760f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 761b6295f9aSRob Clark seq_printf(m, "\t%9s: %s %s seq %u\n", type, 762b6295f9aSRob Clark fence->ops->get_driver_name(fence), 763b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 764b6295f9aSRob Clark fence->seqno); 765b6295f9aSRob Clark } 766b6295f9aSRob Clark 767c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 768c8afe684SRob Clark { 769c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 770b6295f9aSRob Clark struct reservation_object *robj = msm_obj->resv; 771b6295f9aSRob Clark struct reservation_object_list *fobj; 772f54d1867SChris Wilson struct dma_fence *fence; 7734b85f7f5SRob Clark struct msm_gem_vma *vma; 774c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 7754cd33c48SRob Clark const char *madv; 776c8afe684SRob Clark 7770e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 778b6295f9aSRob Clark 7794cd33c48SRob Clark switch (msm_obj->madv) { 7804cd33c48SRob Clark case __MSM_MADV_PURGED: 7814cd33c48SRob Clark madv = " purged"; 7824cd33c48SRob Clark break; 7834cd33c48SRob Clark case MSM_MADV_DONTNEED: 7844cd33c48SRob Clark madv = " purgeable"; 7854cd33c48SRob Clark break; 7864cd33c48SRob Clark case MSM_MADV_WILLNEED: 7874cd33c48SRob Clark default: 7884cd33c48SRob Clark madv = ""; 7894cd33c48SRob Clark break; 7904cd33c48SRob Clark } 7914cd33c48SRob Clark 792575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 7937198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 7942c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 795667ce33eSRob Clark off, msm_obj->vaddr); 796667ce33eSRob Clark 7970815d774SJordan Crouse seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name); 798667ce33eSRob Clark 799575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 800575f0485SJordan Crouse 801575f0485SJordan Crouse seq_puts(m, " vmas:"); 802575f0485SJordan Crouse 803575f0485SJordan Crouse list_for_each_entry(vma, &msm_obj->vmas, list) 8047ad0e8cfSJordan Crouse seq_printf(m, " [%s: %08llx,%s,inuse=%d]", vma->aspace->name, 8057ad0e8cfSJordan Crouse vma->iova, vma->mapped ? "mapped" : "unmapped", 8067ad0e8cfSJordan Crouse vma->inuse); 807575f0485SJordan Crouse 808575f0485SJordan Crouse seq_puts(m, "\n"); 809575f0485SJordan Crouse } 810b6295f9aSRob Clark 811b6295f9aSRob Clark rcu_read_lock(); 812b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 813b6295f9aSRob Clark if (fobj) { 814b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 815b6295f9aSRob Clark 816b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 817b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 818b6295f9aSRob Clark describe_fence(fence, "Shared", m); 819b6295f9aSRob Clark } 820b6295f9aSRob Clark } 821b6295f9aSRob Clark 822b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 823b6295f9aSRob Clark if (fence) 824b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 825b6295f9aSRob Clark rcu_read_unlock(); 8260e08270aSSushmita Susheelendra 8270e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 828c8afe684SRob Clark } 829c8afe684SRob Clark 830c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 831c8afe684SRob Clark { 832c8afe684SRob Clark struct msm_gem_object *msm_obj; 833c8afe684SRob Clark int count = 0; 834c8afe684SRob Clark size_t size = 0; 835c8afe684SRob Clark 8360815d774SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv name\n"); 837c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 838c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 839575f0485SJordan Crouse seq_puts(m, " "); 840c8afe684SRob Clark msm_gem_describe(obj, m); 841c8afe684SRob Clark count++; 842c8afe684SRob Clark size += obj->size; 843c8afe684SRob Clark } 844c8afe684SRob Clark 845c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 846c8afe684SRob Clark } 847c8afe684SRob Clark #endif 848c8afe684SRob Clark 849d71b6bd8SRob Clark /* don't call directly! Use drm_gem_object_put() and friends */ 850c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 851c8afe684SRob Clark { 852c8afe684SRob Clark struct drm_device *dev = obj->dev; 853c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 854c8afe684SRob Clark 855c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 856c8afe684SRob Clark 8577198e6b0SRob Clark /* object should not be on active list: */ 8587198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 8597198e6b0SRob Clark 860c8afe684SRob Clark list_del(&msm_obj->mm_list); 861c8afe684SRob Clark 8620e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 8630e08270aSSushmita Susheelendra 8644fe5f65eSRob Clark put_iova(obj); 865c8afe684SRob Clark 86605b84911SRob Clark if (obj->import_attach) { 86705b84911SRob Clark if (msm_obj->vaddr) 86805b84911SRob Clark dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); 86905b84911SRob Clark 87005b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 87105b84911SRob Clark * ours, just free the array we allocated: 87205b84911SRob Clark */ 87305b84911SRob Clark if (msm_obj->pages) 8742098105eSMichal Hocko kvfree(msm_obj->pages); 87505b84911SRob Clark 876f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 87705b84911SRob Clark } else { 8780e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 879c8afe684SRob Clark put_pages(obj); 88005b84911SRob Clark } 881c8afe684SRob Clark 8827198e6b0SRob Clark if (msm_obj->resv == &msm_obj->_resv) 8837198e6b0SRob Clark reservation_object_fini(msm_obj->resv); 8847198e6b0SRob Clark 885c8afe684SRob Clark drm_gem_object_release(obj); 886c8afe684SRob Clark 8870e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 888c8afe684SRob Clark kfree(msm_obj); 889c8afe684SRob Clark } 890c8afe684SRob Clark 891c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 892c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 8930815d774SJordan Crouse uint32_t size, uint32_t flags, uint32_t *handle, 8940815d774SJordan Crouse char *name) 895c8afe684SRob Clark { 896c8afe684SRob Clark struct drm_gem_object *obj; 897c8afe684SRob Clark int ret; 898c8afe684SRob Clark 899c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 900c8afe684SRob Clark 901c8afe684SRob Clark if (IS_ERR(obj)) 902c8afe684SRob Clark return PTR_ERR(obj); 903c8afe684SRob Clark 9040815d774SJordan Crouse if (name) 9050815d774SJordan Crouse msm_gem_object_set_name(obj, "%s", name); 9060815d774SJordan Crouse 907c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 908c8afe684SRob Clark 909c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 910dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 911c8afe684SRob Clark 912c8afe684SRob Clark return ret; 913c8afe684SRob Clark } 914c8afe684SRob Clark 91505b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 91605b84911SRob Clark uint32_t size, uint32_t flags, 91779f0e202SRob Clark struct reservation_object *resv, 9180e08270aSSushmita Susheelendra struct drm_gem_object **obj, 9190e08270aSSushmita Susheelendra bool struct_mutex_locked) 920c8afe684SRob Clark { 921c8afe684SRob Clark struct msm_drm_private *priv = dev->dev_private; 922c8afe684SRob Clark struct msm_gem_object *msm_obj; 923c8afe684SRob Clark 924c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 925c8afe684SRob Clark case MSM_BO_UNCACHED: 926c8afe684SRob Clark case MSM_BO_CACHED: 927c8afe684SRob Clark case MSM_BO_WC: 928c8afe684SRob Clark break; 929c8afe684SRob Clark default: 9306a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 931c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 93205b84911SRob Clark return -EINVAL; 933c8afe684SRob Clark } 934c8afe684SRob Clark 935667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 93605b84911SRob Clark if (!msm_obj) 93705b84911SRob Clark return -ENOMEM; 938c8afe684SRob Clark 9390e08270aSSushmita Susheelendra mutex_init(&msm_obj->lock); 9400e08270aSSushmita Susheelendra 941c8afe684SRob Clark msm_obj->flags = flags; 9424cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 943c8afe684SRob Clark 94479f0e202SRob Clark if (resv) { 94579f0e202SRob Clark msm_obj->resv = resv; 94679f0e202SRob Clark } else { 9477198e6b0SRob Clark msm_obj->resv = &msm_obj->_resv; 9487198e6b0SRob Clark reservation_object_init(msm_obj->resv); 94979f0e202SRob Clark } 950c8afe684SRob Clark 9517198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 9524b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 9534b85f7f5SRob Clark 9540e08270aSSushmita Susheelendra if (struct_mutex_locked) { 9550e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 956c8afe684SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9570e08270aSSushmita Susheelendra } else { 9580e08270aSSushmita Susheelendra mutex_lock(&dev->struct_mutex); 9590e08270aSSushmita Susheelendra list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9600e08270aSSushmita Susheelendra mutex_unlock(&dev->struct_mutex); 9610e08270aSSushmita Susheelendra } 962c8afe684SRob Clark 96305b84911SRob Clark *obj = &msm_obj->base; 96405b84911SRob Clark 96505b84911SRob Clark return 0; 96605b84911SRob Clark } 96705b84911SRob Clark 9680e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 9690e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 97005b84911SRob Clark { 971f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 972871d812aSRob Clark struct drm_gem_object *obj = NULL; 973f4839bd5SRob Clark bool use_vram = false; 97405b84911SRob Clark int ret; 97505b84911SRob Clark 97605b84911SRob Clark size = PAGE_ALIGN(size); 97705b84911SRob Clark 978f4839bd5SRob Clark if (!iommu_present(&platform_bus_type)) 979f4839bd5SRob Clark use_vram = true; 98086f46f25SJonathan Marek else if ((flags & (MSM_BO_STOLEN | MSM_BO_SCANOUT)) && priv->vram.size) 981f4839bd5SRob Clark use_vram = true; 982f4839bd5SRob Clark 983f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 984f4839bd5SRob Clark return ERR_PTR(-EINVAL); 985f4839bd5SRob Clark 9861a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 9871a5dff5dSJordan Crouse * infrastructure grumpy 9881a5dff5dSJordan Crouse */ 9891a5dff5dSJordan Crouse if (size == 0) 9901a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 9911a5dff5dSJordan Crouse 9920e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, flags, NULL, &obj, struct_mutex_locked); 99305b84911SRob Clark if (ret) 99405b84911SRob Clark goto fail; 99505b84911SRob Clark 996f4839bd5SRob Clark if (use_vram) { 9974b85f7f5SRob Clark struct msm_gem_vma *vma; 998f4839bd5SRob Clark struct page **pages; 999b3949a9aSHans Verkuil struct msm_gem_object *msm_obj = to_msm_bo(obj); 1000b3949a9aSHans Verkuil 1001b3949a9aSHans Verkuil mutex_lock(&msm_obj->lock); 1002f4839bd5SRob Clark 10034b85f7f5SRob Clark vma = add_vma(obj, NULL); 1004b3949a9aSHans Verkuil mutex_unlock(&msm_obj->lock); 10054b85f7f5SRob Clark if (IS_ERR(vma)) { 10064b85f7f5SRob Clark ret = PTR_ERR(vma); 10074b85f7f5SRob Clark goto fail; 10084b85f7f5SRob Clark } 10094b85f7f5SRob Clark 10104b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 10114b85f7f5SRob Clark 1012f4839bd5SRob Clark drm_gem_private_object_init(dev, obj, size); 1013f4839bd5SRob Clark 1014f4839bd5SRob Clark pages = get_pages(obj); 1015f4839bd5SRob Clark if (IS_ERR(pages)) { 1016f4839bd5SRob Clark ret = PTR_ERR(pages); 1017f4839bd5SRob Clark goto fail; 1018f4839bd5SRob Clark } 10194b85f7f5SRob Clark 10204b85f7f5SRob Clark vma->iova = physaddr(obj); 1021f4839bd5SRob Clark } else { 102205b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 102305b84911SRob Clark if (ret) 102405b84911SRob Clark goto fail; 1025871d812aSRob Clark } 102605b84911SRob Clark 102705b84911SRob Clark return obj; 102805b84911SRob Clark 102905b84911SRob Clark fail: 1030dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 103105b84911SRob Clark return ERR_PTR(ret); 103205b84911SRob Clark } 103305b84911SRob Clark 10340e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 10350e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 10360e08270aSSushmita Susheelendra { 10370e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 10380e08270aSSushmita Susheelendra } 10390e08270aSSushmita Susheelendra 10400e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 10410e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 10420e08270aSSushmita Susheelendra { 10430e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 10440e08270aSSushmita Susheelendra } 10450e08270aSSushmita Susheelendra 104605b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 104779f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 104805b84911SRob Clark { 104905b84911SRob Clark struct msm_gem_object *msm_obj; 105005b84911SRob Clark struct drm_gem_object *obj; 105179f0e202SRob Clark uint32_t size; 105205b84911SRob Clark int ret, npages; 105305b84911SRob Clark 1054871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1055871d812aSRob Clark if (!iommu_present(&platform_bus_type)) { 10566a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1057871d812aSRob Clark return ERR_PTR(-EINVAL); 1058871d812aSRob Clark } 1059871d812aSRob Clark 106079f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 106105b84911SRob Clark 10620e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, MSM_BO_WC, dmabuf->resv, &obj, false); 106305b84911SRob Clark if (ret) 106405b84911SRob Clark goto fail; 106505b84911SRob Clark 106605b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 106705b84911SRob Clark 106805b84911SRob Clark npages = size / PAGE_SIZE; 106905b84911SRob Clark 107005b84911SRob Clark msm_obj = to_msm_bo(obj); 10710e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 107205b84911SRob Clark msm_obj->sgt = sgt; 10732098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 107405b84911SRob Clark if (!msm_obj->pages) { 10750e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 107605b84911SRob Clark ret = -ENOMEM; 107705b84911SRob Clark goto fail; 107805b84911SRob Clark } 107905b84911SRob Clark 108005b84911SRob Clark ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); 10810e08270aSSushmita Susheelendra if (ret) { 10820e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 108305b84911SRob Clark goto fail; 10840e08270aSSushmita Susheelendra } 108505b84911SRob Clark 10860e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1087c8afe684SRob Clark return obj; 1088c8afe684SRob Clark 1089c8afe684SRob Clark fail: 1090dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 1091c8afe684SRob Clark return ERR_PTR(ret); 1092c8afe684SRob Clark } 10938223286dSJordan Crouse 10948223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10958223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10968223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 10978223286dSJordan Crouse { 10988223286dSJordan Crouse void *vaddr; 10998223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 11008223286dSJordan Crouse int ret; 11018223286dSJordan Crouse 11028223286dSJordan Crouse if (IS_ERR(obj)) 11038223286dSJordan Crouse return ERR_CAST(obj); 11048223286dSJordan Crouse 11058223286dSJordan Crouse if (iova) { 11069fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 110793f7abf1SJordan Crouse if (ret) 110893f7abf1SJordan Crouse goto err; 11098223286dSJordan Crouse } 11108223286dSJordan Crouse 11118223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1112c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 11137ad0e8cfSJordan Crouse msm_gem_unpin_iova(obj, aspace); 111493f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 111593f7abf1SJordan Crouse goto err; 11168223286dSJordan Crouse } 11178223286dSJordan Crouse 11188223286dSJordan Crouse if (bo) 11198223286dSJordan Crouse *bo = obj; 11208223286dSJordan Crouse 11218223286dSJordan Crouse return vaddr; 112293f7abf1SJordan Crouse err: 112393f7abf1SJordan Crouse if (locked) 112493f7abf1SJordan Crouse drm_gem_object_put(obj); 112593f7abf1SJordan Crouse else 112693f7abf1SJordan Crouse drm_gem_object_put_unlocked(obj); 112793f7abf1SJordan Crouse 112893f7abf1SJordan Crouse return ERR_PTR(ret); 112993f7abf1SJordan Crouse 11308223286dSJordan Crouse } 11318223286dSJordan Crouse 11328223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 11338223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 11348223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 11358223286dSJordan Crouse { 11368223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 11378223286dSJordan Crouse } 11388223286dSJordan Crouse 11398223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 11408223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 11418223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 11428223286dSJordan Crouse { 11438223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 11448223286dSJordan Crouse } 11451e29dff0SJordan Crouse 11461e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 11471e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 11481e29dff0SJordan Crouse { 11491e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 11501e29dff0SJordan Crouse return; 11511e29dff0SJordan Crouse 11521e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 11537ad0e8cfSJordan Crouse msm_gem_unpin_iova(bo, aspace); 11541e29dff0SJordan Crouse 11551e29dff0SJordan Crouse if (locked) 11561e29dff0SJordan Crouse drm_gem_object_put(bo); 11571e29dff0SJordan Crouse else 11581e29dff0SJordan Crouse drm_gem_object_put_unlocked(bo); 11591e29dff0SJordan Crouse } 11600815d774SJordan Crouse 11610815d774SJordan Crouse void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...) 11620815d774SJordan Crouse { 11630815d774SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(bo); 11640815d774SJordan Crouse va_list ap; 11650815d774SJordan Crouse 11660815d774SJordan Crouse if (!fmt) 11670815d774SJordan Crouse return; 11680815d774SJordan Crouse 11690815d774SJordan Crouse va_start(ap, fmt); 11700815d774SJordan Crouse vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap); 11710815d774SJordan Crouse va_end(ap); 11720815d774SJordan Crouse } 1173