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 4119fe041f6SJordan Crouse /* get iova and pin it. Should have a matching put */ 4129fe041f6SJordan Crouse int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, 413c0ee9794SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 414c0ee9794SJordan Crouse { 415c0ee9794SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 416c0ee9794SJordan Crouse u64 local; 417c0ee9794SJordan Crouse int ret; 418c0ee9794SJordan Crouse 419c0ee9794SJordan Crouse mutex_lock(&msm_obj->lock); 420c0ee9794SJordan Crouse 421c0ee9794SJordan Crouse ret = msm_gem_get_iova_locked(obj, aspace, &local); 422c0ee9794SJordan Crouse 423c0ee9794SJordan Crouse if (!ret) 424c0ee9794SJordan Crouse ret = msm_gem_pin_iova(obj, aspace); 425c0ee9794SJordan Crouse 426c0ee9794SJordan Crouse if (!ret) 427c0ee9794SJordan Crouse *iova = local; 428c0ee9794SJordan Crouse 4290e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 430c8afe684SRob Clark return ret; 431c8afe684SRob Clark } 432c8afe684SRob Clark 4339fe041f6SJordan Crouse /* Get an iova but don't pin the memory behind it */ 4349fe041f6SJordan Crouse int msm_gem_get_iova(struct drm_gem_object *obj, 4359fe041f6SJordan Crouse struct msm_gem_address_space *aspace, uint64_t *iova) 4369fe041f6SJordan Crouse { 4379fe041f6SJordan Crouse struct msm_gem_object *msm_obj = to_msm_bo(obj); 4389fe041f6SJordan Crouse int ret; 4399fe041f6SJordan Crouse 4409fe041f6SJordan Crouse mutex_lock(&msm_obj->lock); 4419fe041f6SJordan Crouse ret = msm_gem_get_iova_locked(obj, aspace, iova); 4429fe041f6SJordan Crouse mutex_unlock(&msm_obj->lock); 4439fe041f6SJordan Crouse 4449fe041f6SJordan Crouse return ret; 4459fe041f6SJordan Crouse } 4469fe041f6SJordan Crouse 4479fe041f6SJordan Crouse 4482638d90aSRob Clark /* get iova without taking a reference, used in places where you have 4499fe041f6SJordan Crouse * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' 4502638d90aSRob Clark */ 4518bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 4528bdcd949SRob Clark struct msm_gem_address_space *aspace) 4532638d90aSRob Clark { 4540e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4554b85f7f5SRob Clark struct msm_gem_vma *vma; 4564b85f7f5SRob Clark 4570e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4584b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 4590e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4604b85f7f5SRob Clark WARN_ON(!vma); 4614b85f7f5SRob Clark 4624b85f7f5SRob Clark return vma ? vma->iova : 0; 4632638d90aSRob Clark } 4642638d90aSRob Clark 4658bdcd949SRob Clark void msm_gem_put_iova(struct drm_gem_object *obj, 4668bdcd949SRob Clark struct msm_gem_address_space *aspace) 467c8afe684SRob Clark { 468c8afe684SRob Clark // XXX TODO .. 469c8afe684SRob Clark // NOTE: probably don't need a _locked() version.. we wouldn't 470c8afe684SRob Clark // normally unmap here, but instead just mark that it could be 471c8afe684SRob Clark // unmapped (if the iova refcnt drops to zero), but then later 472c8afe684SRob Clark // if another _get_iova_locked() fails we can start unmapping 473c8afe684SRob Clark // things that are no longer needed.. 474c8afe684SRob Clark } 475c8afe684SRob Clark 476c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 477c8afe684SRob Clark struct drm_mode_create_dumb *args) 478c8afe684SRob Clark { 479c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 480c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 481c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 482c8afe684SRob Clark MSM_BO_SCANOUT | MSM_BO_WC, &args->handle); 483c8afe684SRob Clark } 484c8afe684SRob Clark 485c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 486c8afe684SRob Clark uint32_t handle, uint64_t *offset) 487c8afe684SRob Clark { 488c8afe684SRob Clark struct drm_gem_object *obj; 489c8afe684SRob Clark int ret = 0; 490c8afe684SRob Clark 491c8afe684SRob Clark /* GEM does all our handle to object mapping */ 492a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 493c8afe684SRob Clark if (obj == NULL) { 494c8afe684SRob Clark ret = -ENOENT; 495c8afe684SRob Clark goto fail; 496c8afe684SRob Clark } 497c8afe684SRob Clark 498c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 499c8afe684SRob Clark 500dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 501c8afe684SRob Clark 502c8afe684SRob Clark fail: 503c8afe684SRob Clark return ret; 504c8afe684SRob Clark } 505c8afe684SRob Clark 506fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 507c8afe684SRob Clark { 5080e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5090e08270aSSushmita Susheelendra int ret = 0; 5100e08270aSSushmita Susheelendra 5110e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5120e08270aSSushmita Susheelendra 513fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 5146a41da17SMamta Shukla DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", 515fad33f4bSRob Clark msm_obj->madv, madv); 5160e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5170e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 518c8afe684SRob Clark } 519c8afe684SRob Clark 5200e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 5210e08270aSSushmita Susheelendra * check vmap_count (is_vunmapable()) outside of msm_obj->lock. 5220e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 5230e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 5240e08270aSSushmita Susheelendra * hold msm_obj->lock) 5250e08270aSSushmita Susheelendra */ 5260e08270aSSushmita Susheelendra msm_obj->vmap_count++; 5270e08270aSSushmita Susheelendra 5280e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 5290e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 5300e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 5310e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 5320e08270aSSushmita Susheelendra goto fail; 5330e08270aSSushmita Susheelendra } 5340e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 5350e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 5360e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 5370e08270aSSushmita Susheelendra ret = -ENOMEM; 5380e08270aSSushmita Susheelendra goto fail; 5390e08270aSSushmita Susheelendra } 5400e08270aSSushmita Susheelendra } 5410e08270aSSushmita Susheelendra 5420e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5430e08270aSSushmita Susheelendra return msm_obj->vaddr; 5440e08270aSSushmita Susheelendra 5450e08270aSSushmita Susheelendra fail: 546e1e9db2cSRob Clark msm_obj->vmap_count--; 5470e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5480e08270aSSushmita Susheelendra return ERR_PTR(ret); 54918f23049SRob Clark } 55018f23049SRob Clark 551fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 552fad33f4bSRob Clark { 553fad33f4bSRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 554fad33f4bSRob Clark } 555fad33f4bSRob Clark 556fad33f4bSRob Clark /* 557fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 558fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 559fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 560fad33f4bSRob Clark * active list. 561fad33f4bSRob Clark */ 562fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 563fad33f4bSRob Clark { 564fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 565fad33f4bSRob Clark } 566fad33f4bSRob Clark 56718f23049SRob Clark void msm_gem_put_vaddr(struct drm_gem_object *obj) 56818f23049SRob Clark { 5690e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5700e08270aSSushmita Susheelendra 5710e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5720e08270aSSushmita Susheelendra WARN_ON(msm_obj->vmap_count < 1); 5730e08270aSSushmita Susheelendra msm_obj->vmap_count--; 5740e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 57518f23049SRob Clark } 57618f23049SRob Clark 5774cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 5784cd33c48SRob Clark * false or -errno. 5794cd33c48SRob Clark */ 5804cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 5814cd33c48SRob Clark { 5824cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 5834cd33c48SRob Clark 5840e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5850e08270aSSushmita Susheelendra 5864cd33c48SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 5874cd33c48SRob Clark 5884cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 5894cd33c48SRob Clark msm_obj->madv = madv; 5904cd33c48SRob Clark 5910e08270aSSushmita Susheelendra madv = msm_obj->madv; 5920e08270aSSushmita Susheelendra 5930e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5940e08270aSSushmita Susheelendra 5950e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 5964cd33c48SRob Clark } 5974cd33c48SRob Clark 5980e08270aSSushmita Susheelendra void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) 59968209390SRob Clark { 60068209390SRob Clark struct drm_device *dev = obj->dev; 60168209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 60268209390SRob Clark 60368209390SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 60468209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 60568209390SRob Clark WARN_ON(obj->import_attach); 60668209390SRob Clark 6070e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6080e08270aSSushmita Susheelendra 60968209390SRob Clark put_iova(obj); 61068209390SRob Clark 6110e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 61268209390SRob Clark 61368209390SRob Clark put_pages(obj); 61468209390SRob Clark 61568209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 61668209390SRob Clark 61768209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 61868209390SRob Clark drm_gem_free_mmap_offset(obj); 61968209390SRob Clark 62068209390SRob Clark /* Our goal here is to return as much of the memory as 62168209390SRob Clark * is possible back to the system as we are called from OOM. 62268209390SRob Clark * To do this we must instruct the shmfs to drop all of its 62368209390SRob Clark * backing pages, *now*. 62468209390SRob Clark */ 62568209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 62668209390SRob Clark 62768209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 62868209390SRob Clark 0, (loff_t)-1); 6290e08270aSSushmita Susheelendra 6300e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 63168209390SRob Clark } 63268209390SRob Clark 6330e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj) 634e1e9db2cSRob Clark { 635e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 636e1e9db2cSRob Clark 6370e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 6380e08270aSSushmita Susheelendra 639e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 640e1e9db2cSRob Clark return; 641e1e9db2cSRob Clark 642e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 643e1e9db2cSRob Clark msm_obj->vaddr = NULL; 644e1e9db2cSRob Clark } 645e1e9db2cSRob Clark 6460e08270aSSushmita Susheelendra void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) 6470e08270aSSushmita Susheelendra { 6480e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6490e08270aSSushmita Susheelendra 6500e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6510e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 6520e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6530e08270aSSushmita Susheelendra } 6540e08270aSSushmita Susheelendra 655b6295f9aSRob Clark /* must be called before _move_to_active().. */ 656b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 657b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 658b6295f9aSRob Clark { 659b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 660b6295f9aSRob Clark struct reservation_object_list *fobj; 661f54d1867SChris Wilson struct dma_fence *fence; 662b6295f9aSRob Clark int i, ret; 663b6295f9aSRob Clark 664b6295f9aSRob Clark fobj = reservation_object_get_list(msm_obj->resv); 665b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 666b6295f9aSRob Clark fence = reservation_object_get_excl(msm_obj->resv); 667b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 668b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 669f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 670b6295f9aSRob Clark if (ret) 671b6295f9aSRob Clark return ret; 672b6295f9aSRob Clark } 673b6295f9aSRob Clark } 674b6295f9aSRob Clark 675b6295f9aSRob Clark if (!exclusive || !fobj) 676b6295f9aSRob Clark return 0; 677b6295f9aSRob Clark 678b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 679b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 680b6295f9aSRob Clark reservation_object_held(msm_obj->resv)); 681b6295f9aSRob Clark if (fence->context != fctx->context) { 682f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 683b6295f9aSRob Clark if (ret) 684b6295f9aSRob Clark return ret; 685b6295f9aSRob Clark } 686b6295f9aSRob Clark } 687b6295f9aSRob Clark 688b6295f9aSRob Clark return 0; 689b6295f9aSRob Clark } 690b6295f9aSRob Clark 6917198e6b0SRob Clark void msm_gem_move_to_active(struct drm_gem_object *obj, 692f54d1867SChris Wilson struct msm_gpu *gpu, bool exclusive, struct dma_fence *fence) 6937198e6b0SRob Clark { 6947198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6954cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 6967198e6b0SRob Clark msm_obj->gpu = gpu; 697b6295f9aSRob Clark if (exclusive) 698b6295f9aSRob Clark reservation_object_add_excl_fence(msm_obj->resv, fence); 699bf6811f3SRob Clark else 700b6295f9aSRob Clark reservation_object_add_shared_fence(msm_obj->resv, fence); 7017198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7027198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 7037198e6b0SRob Clark } 7047198e6b0SRob Clark 7057198e6b0SRob Clark void msm_gem_move_to_inactive(struct drm_gem_object *obj) 7067198e6b0SRob Clark { 7077198e6b0SRob Clark struct drm_device *dev = obj->dev; 7087198e6b0SRob Clark struct msm_drm_private *priv = dev->dev_private; 7097198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 7107198e6b0SRob Clark 7117198e6b0SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 7127198e6b0SRob Clark 7137198e6b0SRob Clark msm_obj->gpu = NULL; 7147198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 7157198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 7167198e6b0SRob Clark } 7177198e6b0SRob Clark 718ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 719ba00c3f2SRob Clark { 720b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 721b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 722f755e227SChris Wilson unsigned long remain = 723f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 724f755e227SChris Wilson long ret; 725b6295f9aSRob Clark 726b6295f9aSRob Clark ret = reservation_object_wait_timeout_rcu(msm_obj->resv, write, 727f755e227SChris Wilson true, remain); 728f755e227SChris Wilson if (ret == 0) 729f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 730f755e227SChris Wilson else if (ret < 0) 731f755e227SChris Wilson return ret; 732ba00c3f2SRob Clark 7337198e6b0SRob Clark /* TODO cache maintenance */ 7347198e6b0SRob Clark 735b6295f9aSRob Clark return 0; 7367198e6b0SRob Clark } 7377198e6b0SRob Clark 7387198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 7397198e6b0SRob Clark { 7407198e6b0SRob Clark /* TODO cache maintenance */ 741c8afe684SRob Clark return 0; 742c8afe684SRob Clark } 743c8afe684SRob Clark 744c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 745f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 746b6295f9aSRob Clark struct seq_file *m) 747b6295f9aSRob Clark { 748f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 749b6295f9aSRob Clark seq_printf(m, "\t%9s: %s %s seq %u\n", type, 750b6295f9aSRob Clark fence->ops->get_driver_name(fence), 751b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 752b6295f9aSRob Clark fence->seqno); 753b6295f9aSRob Clark } 754b6295f9aSRob Clark 755c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 756c8afe684SRob Clark { 757c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 758b6295f9aSRob Clark struct reservation_object *robj = msm_obj->resv; 759b6295f9aSRob Clark struct reservation_object_list *fobj; 760f54d1867SChris Wilson struct dma_fence *fence; 7614b85f7f5SRob Clark struct msm_gem_vma *vma; 762c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 7634cd33c48SRob Clark const char *madv; 764c8afe684SRob Clark 7650e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 766b6295f9aSRob Clark 7674cd33c48SRob Clark switch (msm_obj->madv) { 7684cd33c48SRob Clark case __MSM_MADV_PURGED: 7694cd33c48SRob Clark madv = " purged"; 7704cd33c48SRob Clark break; 7714cd33c48SRob Clark case MSM_MADV_DONTNEED: 7724cd33c48SRob Clark madv = " purgeable"; 7734cd33c48SRob Clark break; 7744cd33c48SRob Clark case MSM_MADV_WILLNEED: 7754cd33c48SRob Clark default: 7764cd33c48SRob Clark madv = ""; 7774cd33c48SRob Clark break; 7784cd33c48SRob Clark } 7794cd33c48SRob Clark 780575f0485SJordan Crouse seq_printf(m, "%08x: %c %2d (%2d) %08llx %p", 7817198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 7822c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 783667ce33eSRob Clark off, msm_obj->vaddr); 784667ce33eSRob Clark 785575f0485SJordan Crouse seq_printf(m, " %08zu%9s\n", obj->size, madv); 786667ce33eSRob Clark 787575f0485SJordan Crouse if (!list_empty(&msm_obj->vmas)) { 788575f0485SJordan Crouse 789575f0485SJordan Crouse seq_puts(m, " vmas:"); 790575f0485SJordan Crouse 791575f0485SJordan Crouse list_for_each_entry(vma, &msm_obj->vmas, list) 792575f0485SJordan Crouse seq_printf(m, " [%s: %08llx,%s]", vma->aspace->name, 793575f0485SJordan Crouse vma->iova, vma->mapped ? "mapped" : "unmapped"); 794575f0485SJordan Crouse 795575f0485SJordan Crouse seq_puts(m, "\n"); 796575f0485SJordan Crouse } 797b6295f9aSRob Clark 798b6295f9aSRob Clark rcu_read_lock(); 799b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 800b6295f9aSRob Clark if (fobj) { 801b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 802b6295f9aSRob Clark 803b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 804b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 805b6295f9aSRob Clark describe_fence(fence, "Shared", m); 806b6295f9aSRob Clark } 807b6295f9aSRob Clark } 808b6295f9aSRob Clark 809b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 810b6295f9aSRob Clark if (fence) 811b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 812b6295f9aSRob Clark rcu_read_unlock(); 8130e08270aSSushmita Susheelendra 8140e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 815c8afe684SRob Clark } 816c8afe684SRob Clark 817c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 818c8afe684SRob Clark { 819c8afe684SRob Clark struct msm_gem_object *msm_obj; 820c8afe684SRob Clark int count = 0; 821c8afe684SRob Clark size_t size = 0; 822c8afe684SRob Clark 823575f0485SJordan Crouse seq_puts(m, " flags id ref offset kaddr size madv\n"); 824c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 825c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 826575f0485SJordan Crouse seq_puts(m, " "); 827c8afe684SRob Clark msm_gem_describe(obj, m); 828c8afe684SRob Clark count++; 829c8afe684SRob Clark size += obj->size; 830c8afe684SRob Clark } 831c8afe684SRob Clark 832c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 833c8afe684SRob Clark } 834c8afe684SRob Clark #endif 835c8afe684SRob Clark 836d71b6bd8SRob Clark /* don't call directly! Use drm_gem_object_put() and friends */ 837c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 838c8afe684SRob Clark { 839c8afe684SRob Clark struct drm_device *dev = obj->dev; 840c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 841c8afe684SRob Clark 842c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 843c8afe684SRob Clark 8447198e6b0SRob Clark /* object should not be on active list: */ 8457198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 8467198e6b0SRob Clark 847c8afe684SRob Clark list_del(&msm_obj->mm_list); 848c8afe684SRob Clark 8490e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 8500e08270aSSushmita Susheelendra 8514fe5f65eSRob Clark put_iova(obj); 852c8afe684SRob Clark 85305b84911SRob Clark if (obj->import_attach) { 85405b84911SRob Clark if (msm_obj->vaddr) 85505b84911SRob Clark dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); 85605b84911SRob Clark 85705b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 85805b84911SRob Clark * ours, just free the array we allocated: 85905b84911SRob Clark */ 86005b84911SRob Clark if (msm_obj->pages) 8612098105eSMichal Hocko kvfree(msm_obj->pages); 86205b84911SRob Clark 863f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 86405b84911SRob Clark } else { 8650e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 866c8afe684SRob Clark put_pages(obj); 86705b84911SRob Clark } 868c8afe684SRob Clark 8697198e6b0SRob Clark if (msm_obj->resv == &msm_obj->_resv) 8707198e6b0SRob Clark reservation_object_fini(msm_obj->resv); 8717198e6b0SRob Clark 872c8afe684SRob Clark drm_gem_object_release(obj); 873c8afe684SRob Clark 8740e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 875c8afe684SRob Clark kfree(msm_obj); 876c8afe684SRob Clark } 877c8afe684SRob Clark 878c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 879c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 880c8afe684SRob Clark uint32_t size, uint32_t flags, uint32_t *handle) 881c8afe684SRob Clark { 882c8afe684SRob Clark struct drm_gem_object *obj; 883c8afe684SRob Clark int ret; 884c8afe684SRob Clark 885c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 886c8afe684SRob Clark 887c8afe684SRob Clark if (IS_ERR(obj)) 888c8afe684SRob Clark return PTR_ERR(obj); 889c8afe684SRob Clark 890c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 891c8afe684SRob Clark 892c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 893dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 894c8afe684SRob Clark 895c8afe684SRob Clark return ret; 896c8afe684SRob Clark } 897c8afe684SRob Clark 89805b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 89905b84911SRob Clark uint32_t size, uint32_t flags, 90079f0e202SRob Clark struct reservation_object *resv, 9010e08270aSSushmita Susheelendra struct drm_gem_object **obj, 9020e08270aSSushmita Susheelendra bool struct_mutex_locked) 903c8afe684SRob Clark { 904c8afe684SRob Clark struct msm_drm_private *priv = dev->dev_private; 905c8afe684SRob Clark struct msm_gem_object *msm_obj; 906c8afe684SRob Clark 907c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 908c8afe684SRob Clark case MSM_BO_UNCACHED: 909c8afe684SRob Clark case MSM_BO_CACHED: 910c8afe684SRob Clark case MSM_BO_WC: 911c8afe684SRob Clark break; 912c8afe684SRob Clark default: 9136a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n", 914c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 91505b84911SRob Clark return -EINVAL; 916c8afe684SRob Clark } 917c8afe684SRob Clark 918667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 91905b84911SRob Clark if (!msm_obj) 92005b84911SRob Clark return -ENOMEM; 921c8afe684SRob Clark 9220e08270aSSushmita Susheelendra mutex_init(&msm_obj->lock); 9230e08270aSSushmita Susheelendra 924c8afe684SRob Clark msm_obj->flags = flags; 9254cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 926c8afe684SRob Clark 92779f0e202SRob Clark if (resv) { 92879f0e202SRob Clark msm_obj->resv = resv; 92979f0e202SRob Clark } else { 9307198e6b0SRob Clark msm_obj->resv = &msm_obj->_resv; 9317198e6b0SRob Clark reservation_object_init(msm_obj->resv); 93279f0e202SRob Clark } 933c8afe684SRob Clark 9347198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 9354b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 9364b85f7f5SRob Clark 9370e08270aSSushmita Susheelendra if (struct_mutex_locked) { 9380e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 939c8afe684SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9400e08270aSSushmita Susheelendra } else { 9410e08270aSSushmita Susheelendra mutex_lock(&dev->struct_mutex); 9420e08270aSSushmita Susheelendra list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9430e08270aSSushmita Susheelendra mutex_unlock(&dev->struct_mutex); 9440e08270aSSushmita Susheelendra } 945c8afe684SRob Clark 94605b84911SRob Clark *obj = &msm_obj->base; 94705b84911SRob Clark 94805b84911SRob Clark return 0; 94905b84911SRob Clark } 95005b84911SRob Clark 9510e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 9520e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 95305b84911SRob Clark { 954f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 955871d812aSRob Clark struct drm_gem_object *obj = NULL; 956f4839bd5SRob Clark bool use_vram = false; 95705b84911SRob Clark int ret; 95805b84911SRob Clark 95905b84911SRob Clark size = PAGE_ALIGN(size); 96005b84911SRob Clark 961f4839bd5SRob Clark if (!iommu_present(&platform_bus_type)) 962f4839bd5SRob Clark use_vram = true; 963f4839bd5SRob Clark else if ((flags & MSM_BO_STOLEN) && priv->vram.size) 964f4839bd5SRob Clark use_vram = true; 965f4839bd5SRob Clark 966f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 967f4839bd5SRob Clark return ERR_PTR(-EINVAL); 968f4839bd5SRob Clark 9691a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 9701a5dff5dSJordan Crouse * infrastructure grumpy 9711a5dff5dSJordan Crouse */ 9721a5dff5dSJordan Crouse if (size == 0) 9731a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 9741a5dff5dSJordan Crouse 9750e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, flags, NULL, &obj, struct_mutex_locked); 97605b84911SRob Clark if (ret) 97705b84911SRob Clark goto fail; 97805b84911SRob Clark 979f4839bd5SRob Clark if (use_vram) { 9804b85f7f5SRob Clark struct msm_gem_vma *vma; 981f4839bd5SRob Clark struct page **pages; 982b3949a9aSHans Verkuil struct msm_gem_object *msm_obj = to_msm_bo(obj); 983b3949a9aSHans Verkuil 984b3949a9aSHans Verkuil mutex_lock(&msm_obj->lock); 985f4839bd5SRob Clark 9864b85f7f5SRob Clark vma = add_vma(obj, NULL); 987b3949a9aSHans Verkuil mutex_unlock(&msm_obj->lock); 9884b85f7f5SRob Clark if (IS_ERR(vma)) { 9894b85f7f5SRob Clark ret = PTR_ERR(vma); 9904b85f7f5SRob Clark goto fail; 9914b85f7f5SRob Clark } 9924b85f7f5SRob Clark 9934b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 9944b85f7f5SRob Clark 995f4839bd5SRob Clark drm_gem_private_object_init(dev, obj, size); 996f4839bd5SRob Clark 997f4839bd5SRob Clark pages = get_pages(obj); 998f4839bd5SRob Clark if (IS_ERR(pages)) { 999f4839bd5SRob Clark ret = PTR_ERR(pages); 1000f4839bd5SRob Clark goto fail; 1001f4839bd5SRob Clark } 10024b85f7f5SRob Clark 10034b85f7f5SRob Clark vma->iova = physaddr(obj); 1004f4839bd5SRob Clark } else { 100505b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 100605b84911SRob Clark if (ret) 100705b84911SRob Clark goto fail; 1008871d812aSRob Clark } 100905b84911SRob Clark 101005b84911SRob Clark return obj; 101105b84911SRob Clark 101205b84911SRob Clark fail: 1013dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 101405b84911SRob Clark return ERR_PTR(ret); 101505b84911SRob Clark } 101605b84911SRob Clark 10170e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 10180e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 10190e08270aSSushmita Susheelendra { 10200e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 10210e08270aSSushmita Susheelendra } 10220e08270aSSushmita Susheelendra 10230e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 10240e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 10250e08270aSSushmita Susheelendra { 10260e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 10270e08270aSSushmita Susheelendra } 10280e08270aSSushmita Susheelendra 102905b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 103079f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 103105b84911SRob Clark { 103205b84911SRob Clark struct msm_gem_object *msm_obj; 103305b84911SRob Clark struct drm_gem_object *obj; 103479f0e202SRob Clark uint32_t size; 103505b84911SRob Clark int ret, npages; 103605b84911SRob Clark 1037871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1038871d812aSRob Clark if (!iommu_present(&platform_bus_type)) { 10396a41da17SMamta Shukla DRM_DEV_ERROR(dev->dev, "cannot import without IOMMU\n"); 1040871d812aSRob Clark return ERR_PTR(-EINVAL); 1041871d812aSRob Clark } 1042871d812aSRob Clark 104379f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 104405b84911SRob Clark 10450e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, MSM_BO_WC, dmabuf->resv, &obj, false); 104605b84911SRob Clark if (ret) 104705b84911SRob Clark goto fail; 104805b84911SRob Clark 104905b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 105005b84911SRob Clark 105105b84911SRob Clark npages = size / PAGE_SIZE; 105205b84911SRob Clark 105305b84911SRob Clark msm_obj = to_msm_bo(obj); 10540e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 105505b84911SRob Clark msm_obj->sgt = sgt; 10562098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 105705b84911SRob Clark if (!msm_obj->pages) { 10580e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 105905b84911SRob Clark ret = -ENOMEM; 106005b84911SRob Clark goto fail; 106105b84911SRob Clark } 106205b84911SRob Clark 106305b84911SRob Clark ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); 10640e08270aSSushmita Susheelendra if (ret) { 10650e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 106605b84911SRob Clark goto fail; 10670e08270aSSushmita Susheelendra } 106805b84911SRob Clark 10690e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1070c8afe684SRob Clark return obj; 1071c8afe684SRob Clark 1072c8afe684SRob Clark fail: 1073dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 1074c8afe684SRob Clark return ERR_PTR(ret); 1075c8afe684SRob Clark } 10768223286dSJordan Crouse 10778223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10788223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10798223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 10808223286dSJordan Crouse { 10818223286dSJordan Crouse void *vaddr; 10828223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 10838223286dSJordan Crouse int ret; 10848223286dSJordan Crouse 10858223286dSJordan Crouse if (IS_ERR(obj)) 10868223286dSJordan Crouse return ERR_CAST(obj); 10878223286dSJordan Crouse 10888223286dSJordan Crouse if (iova) { 10899fe041f6SJordan Crouse ret = msm_gem_get_and_pin_iova(obj, aspace, iova); 109093f7abf1SJordan Crouse if (ret) 109193f7abf1SJordan Crouse goto err; 10928223286dSJordan Crouse } 10938223286dSJordan Crouse 10948223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1095c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 10968223286dSJordan Crouse msm_gem_put_iova(obj, aspace); 109793f7abf1SJordan Crouse ret = PTR_ERR(vaddr); 109893f7abf1SJordan Crouse goto err; 10998223286dSJordan Crouse } 11008223286dSJordan Crouse 11018223286dSJordan Crouse if (bo) 11028223286dSJordan Crouse *bo = obj; 11038223286dSJordan Crouse 11048223286dSJordan Crouse return vaddr; 110593f7abf1SJordan Crouse err: 110693f7abf1SJordan Crouse if (locked) 110793f7abf1SJordan Crouse drm_gem_object_put(obj); 110893f7abf1SJordan Crouse else 110993f7abf1SJordan Crouse drm_gem_object_put_unlocked(obj); 111093f7abf1SJordan Crouse 111193f7abf1SJordan Crouse return ERR_PTR(ret); 111293f7abf1SJordan Crouse 11138223286dSJordan Crouse } 11148223286dSJordan Crouse 11158223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 11168223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 11178223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 11188223286dSJordan Crouse { 11198223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 11208223286dSJordan Crouse } 11218223286dSJordan Crouse 11228223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 11238223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 11248223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 11258223286dSJordan Crouse { 11268223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 11278223286dSJordan Crouse } 11281e29dff0SJordan Crouse 11291e29dff0SJordan Crouse void msm_gem_kernel_put(struct drm_gem_object *bo, 11301e29dff0SJordan Crouse struct msm_gem_address_space *aspace, bool locked) 11311e29dff0SJordan Crouse { 11321e29dff0SJordan Crouse if (IS_ERR_OR_NULL(bo)) 11331e29dff0SJordan Crouse return; 11341e29dff0SJordan Crouse 11351e29dff0SJordan Crouse msm_gem_put_vaddr(bo); 11361e29dff0SJordan Crouse msm_gem_put_iova(bo, aspace); 11371e29dff0SJordan Crouse 11381e29dff0SJordan Crouse if (locked) 11391e29dff0SJordan Crouse drm_gem_object_put(bo); 11401e29dff0SJordan Crouse else 11411e29dff0SJordan Crouse drm_gem_object_put_unlocked(bo); 11421e29dff0SJordan Crouse } 1143