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)) { 91c8afe684SRob Clark dev_err(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 10262e3a3e3SPrakash Kamliya dev_err(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 22211bac800SDave Jiang int 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; 230c8afe684SRob Clark int ret; 231c8afe684SRob Clark 2320e08270aSSushmita Susheelendra /* 2330e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2340e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 235d78d383aSRob Clark */ 2360e08270aSSushmita Susheelendra ret = mutex_lock_interruptible(&msm_obj->lock); 237c8afe684SRob Clark if (ret) 238c8afe684SRob Clark goto out; 239c8afe684SRob Clark 2400e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 2410e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 2420e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2430e08270aSSushmita Susheelendra } 2440e08270aSSushmita Susheelendra 245c8afe684SRob Clark /* make sure we have pages attached now */ 246c8afe684SRob Clark pages = get_pages(obj); 247c8afe684SRob Clark if (IS_ERR(pages)) { 248c8afe684SRob Clark ret = PTR_ERR(pages); 249c8afe684SRob Clark goto out_unlock; 250c8afe684SRob Clark } 251c8afe684SRob Clark 252c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2531a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 254c8afe684SRob Clark 255871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 256c8afe684SRob Clark 2571a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 258c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 259c8afe684SRob Clark 2601a29d85eSJan Kara ret = vm_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 261c8afe684SRob Clark 262c8afe684SRob Clark out_unlock: 2630e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 264c8afe684SRob Clark out: 265c8afe684SRob Clark switch (ret) { 266c8afe684SRob Clark case -EAGAIN: 267c8afe684SRob Clark case 0: 268c8afe684SRob Clark case -ERESTARTSYS: 269c8afe684SRob Clark case -EINTR: 270505886d5SRob Clark case -EBUSY: 271505886d5SRob Clark /* 272505886d5SRob Clark * EBUSY is ok: this just means that another thread 273505886d5SRob Clark * already did the job. 274505886d5SRob Clark */ 275c8afe684SRob Clark return VM_FAULT_NOPAGE; 276c8afe684SRob Clark case -ENOMEM: 277c8afe684SRob Clark return VM_FAULT_OOM; 278c8afe684SRob Clark default: 279c8afe684SRob Clark return VM_FAULT_SIGBUS; 280c8afe684SRob Clark } 281c8afe684SRob Clark } 282c8afe684SRob Clark 283c8afe684SRob Clark /** get mmap offset */ 284c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 285c8afe684SRob Clark { 286c8afe684SRob Clark struct drm_device *dev = obj->dev; 2870e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 288c8afe684SRob Clark int ret; 289c8afe684SRob Clark 2900e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 291c8afe684SRob Clark 292c8afe684SRob Clark /* Make it mmapable */ 293c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 294c8afe684SRob Clark 295c8afe684SRob Clark if (ret) { 296c8afe684SRob Clark dev_err(dev->dev, "could not allocate mmap offset\n"); 297c8afe684SRob Clark return 0; 298c8afe684SRob Clark } 299c8afe684SRob Clark 300c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 301c8afe684SRob Clark } 302c8afe684SRob Clark 303c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 304c8afe684SRob Clark { 305c8afe684SRob Clark uint64_t offset; 3060e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 3070e08270aSSushmita Susheelendra 3080e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 309c8afe684SRob Clark offset = mmap_offset(obj); 3100e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 311c8afe684SRob Clark return offset; 312c8afe684SRob Clark } 313c8afe684SRob Clark 3144b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3154b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3164b85f7f5SRob Clark { 3174b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3184b85f7f5SRob Clark struct msm_gem_vma *vma; 3194b85f7f5SRob Clark 3200e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3210e08270aSSushmita Susheelendra 3224b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3234b85f7f5SRob Clark if (!vma) 3244b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3254b85f7f5SRob Clark 3264b85f7f5SRob Clark vma->aspace = aspace; 3274b85f7f5SRob Clark 3284b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3294b85f7f5SRob Clark 3304b85f7f5SRob Clark return vma; 3314b85f7f5SRob Clark } 3324b85f7f5SRob Clark 3334b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3344b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3354b85f7f5SRob Clark { 3364b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3374b85f7f5SRob Clark struct msm_gem_vma *vma; 3384b85f7f5SRob Clark 3390e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3404b85f7f5SRob Clark 3414b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3424b85f7f5SRob Clark if (vma->aspace == aspace) 3434b85f7f5SRob Clark return vma; 3444b85f7f5SRob Clark } 3454b85f7f5SRob Clark 3464b85f7f5SRob Clark return NULL; 3474b85f7f5SRob Clark } 3484b85f7f5SRob Clark 3494b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3504b85f7f5SRob Clark { 3514b85f7f5SRob Clark if (!vma) 3524b85f7f5SRob Clark return; 3534b85f7f5SRob Clark 3544b85f7f5SRob Clark list_del(&vma->list); 3554b85f7f5SRob Clark kfree(vma); 3564b85f7f5SRob Clark } 3574b85f7f5SRob Clark 3580e08270aSSushmita Susheelendra /* Called with msm_obj->lock locked */ 3594fe5f65eSRob Clark static void 3604fe5f65eSRob Clark put_iova(struct drm_gem_object *obj) 3614fe5f65eSRob Clark { 3624fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3634b85f7f5SRob Clark struct msm_gem_vma *vma, *tmp; 3644fe5f65eSRob Clark 3650e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3664fe5f65eSRob Clark 3674b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3684b85f7f5SRob Clark msm_gem_unmap_vma(vma->aspace, vma, msm_obj->sgt); 3694b85f7f5SRob Clark del_vma(vma); 3704fe5f65eSRob Clark } 3714fe5f65eSRob Clark } 3724fe5f65eSRob Clark 3730e08270aSSushmita Susheelendra /* get iova, taking a reference. Should have a matching put */ 3740e08270aSSushmita Susheelendra int msm_gem_get_iova(struct drm_gem_object *obj, 3758bdcd949SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 376c8afe684SRob Clark { 377c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3784b85f7f5SRob Clark struct msm_gem_vma *vma; 379c8afe684SRob Clark int ret = 0; 380c8afe684SRob Clark 3810e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 3820e08270aSSushmita Susheelendra 3830e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 3840e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 3850e08270aSSushmita Susheelendra return -EBUSY; 3860e08270aSSushmita Susheelendra } 387cb1e3818SRob Clark 3884b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 389871d812aSRob Clark 3904b85f7f5SRob Clark if (!vma) { 3914b85f7f5SRob Clark struct page **pages; 392871d812aSRob Clark 3934b85f7f5SRob Clark vma = add_vma(obj, aspace); 39471e3dfa1SDan Carpenter if (IS_ERR(vma)) { 39571e3dfa1SDan Carpenter ret = PTR_ERR(vma); 39671e3dfa1SDan Carpenter goto unlock; 39771e3dfa1SDan Carpenter } 3984b85f7f5SRob Clark 3994b85f7f5SRob Clark pages = get_pages(obj); 4004b85f7f5SRob Clark if (IS_ERR(pages)) { 4014b85f7f5SRob Clark ret = PTR_ERR(pages); 4024b85f7f5SRob Clark goto fail; 403c8afe684SRob Clark } 404c8afe684SRob Clark 4054b85f7f5SRob Clark ret = msm_gem_map_vma(aspace, vma, msm_obj->sgt, 4064b85f7f5SRob Clark obj->size >> PAGE_SHIFT); 4074b85f7f5SRob Clark if (ret) 4084b85f7f5SRob Clark goto fail; 4094b85f7f5SRob Clark } 4104b85f7f5SRob Clark 4114b85f7f5SRob Clark *iova = vma->iova; 4120e08270aSSushmita Susheelendra 4130e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4144b85f7f5SRob Clark return 0; 4154b85f7f5SRob Clark 4164b85f7f5SRob Clark fail: 4174b85f7f5SRob Clark del_vma(vma); 41871e3dfa1SDan Carpenter unlock: 4190e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 420c8afe684SRob Clark return ret; 421c8afe684SRob Clark } 422c8afe684SRob Clark 4232638d90aSRob Clark /* get iova without taking a reference, used in places where you have 4242638d90aSRob Clark * already done a 'msm_gem_get_iova()'. 4252638d90aSRob Clark */ 4268bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 4278bdcd949SRob Clark struct msm_gem_address_space *aspace) 4282638d90aSRob Clark { 4290e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4304b85f7f5SRob Clark struct msm_gem_vma *vma; 4314b85f7f5SRob Clark 4320e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4334b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 4340e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4354b85f7f5SRob Clark WARN_ON(!vma); 4364b85f7f5SRob Clark 4374b85f7f5SRob Clark return vma ? vma->iova : 0; 4382638d90aSRob Clark } 4392638d90aSRob Clark 4408bdcd949SRob Clark void msm_gem_put_iova(struct drm_gem_object *obj, 4418bdcd949SRob Clark struct msm_gem_address_space *aspace) 442c8afe684SRob Clark { 443c8afe684SRob Clark // XXX TODO .. 444c8afe684SRob Clark // NOTE: probably don't need a _locked() version.. we wouldn't 445c8afe684SRob Clark // normally unmap here, but instead just mark that it could be 446c8afe684SRob Clark // unmapped (if the iova refcnt drops to zero), but then later 447c8afe684SRob Clark // if another _get_iova_locked() fails we can start unmapping 448c8afe684SRob Clark // things that are no longer needed.. 449c8afe684SRob Clark } 450c8afe684SRob Clark 451c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 452c8afe684SRob Clark struct drm_mode_create_dumb *args) 453c8afe684SRob Clark { 454c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 455c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 456c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 457c8afe684SRob Clark MSM_BO_SCANOUT | MSM_BO_WC, &args->handle); 458c8afe684SRob Clark } 459c8afe684SRob Clark 460c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 461c8afe684SRob Clark uint32_t handle, uint64_t *offset) 462c8afe684SRob Clark { 463c8afe684SRob Clark struct drm_gem_object *obj; 464c8afe684SRob Clark int ret = 0; 465c8afe684SRob Clark 466c8afe684SRob Clark /* GEM does all our handle to object mapping */ 467a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 468c8afe684SRob Clark if (obj == NULL) { 469c8afe684SRob Clark ret = -ENOENT; 470c8afe684SRob Clark goto fail; 471c8afe684SRob Clark } 472c8afe684SRob Clark 473c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 474c8afe684SRob Clark 475dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 476c8afe684SRob Clark 477c8afe684SRob Clark fail: 478c8afe684SRob Clark return ret; 479c8afe684SRob Clark } 480c8afe684SRob Clark 481fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 482c8afe684SRob Clark { 4830e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4840e08270aSSushmita Susheelendra int ret = 0; 4850e08270aSSushmita Susheelendra 4860e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4870e08270aSSushmita Susheelendra 488fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 489fad33f4bSRob Clark dev_err(obj->dev->dev, "Invalid madv state: %u vs %u\n", 490fad33f4bSRob Clark msm_obj->madv, madv); 4910e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4920e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 493c8afe684SRob Clark } 494c8afe684SRob Clark 4950e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 4960e08270aSSushmita Susheelendra * check vmap_count (is_vunmapable()) outside of msm_obj->lock. 4970e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 4980e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 4990e08270aSSushmita Susheelendra * hold msm_obj->lock) 5000e08270aSSushmita Susheelendra */ 5010e08270aSSushmita Susheelendra msm_obj->vmap_count++; 5020e08270aSSushmita Susheelendra 5030e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 5040e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 5050e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 5060e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 5070e08270aSSushmita Susheelendra goto fail; 5080e08270aSSushmita Susheelendra } 5090e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 5100e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 5110e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 5120e08270aSSushmita Susheelendra ret = -ENOMEM; 5130e08270aSSushmita Susheelendra goto fail; 5140e08270aSSushmita Susheelendra } 5150e08270aSSushmita Susheelendra } 5160e08270aSSushmita Susheelendra 5170e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5180e08270aSSushmita Susheelendra return msm_obj->vaddr; 5190e08270aSSushmita Susheelendra 5200e08270aSSushmita Susheelendra fail: 521e1e9db2cSRob Clark msm_obj->vmap_count--; 5220e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5230e08270aSSushmita Susheelendra return ERR_PTR(ret); 52418f23049SRob Clark } 52518f23049SRob Clark 526fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 527fad33f4bSRob Clark { 528fad33f4bSRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 529fad33f4bSRob Clark } 530fad33f4bSRob Clark 531fad33f4bSRob Clark /* 532fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 533fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 534fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 535fad33f4bSRob Clark * active list. 536fad33f4bSRob Clark */ 537fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 538fad33f4bSRob Clark { 539fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 540fad33f4bSRob Clark } 541fad33f4bSRob Clark 54218f23049SRob Clark void msm_gem_put_vaddr(struct drm_gem_object *obj) 54318f23049SRob Clark { 5440e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5450e08270aSSushmita Susheelendra 5460e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5470e08270aSSushmita Susheelendra WARN_ON(msm_obj->vmap_count < 1); 5480e08270aSSushmita Susheelendra msm_obj->vmap_count--; 5490e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 55018f23049SRob Clark } 55118f23049SRob Clark 5524cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 5534cd33c48SRob Clark * false or -errno. 5544cd33c48SRob Clark */ 5554cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 5564cd33c48SRob Clark { 5574cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 5584cd33c48SRob Clark 5590e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5600e08270aSSushmita Susheelendra 5614cd33c48SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 5624cd33c48SRob Clark 5634cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 5644cd33c48SRob Clark msm_obj->madv = madv; 5654cd33c48SRob Clark 5660e08270aSSushmita Susheelendra madv = msm_obj->madv; 5670e08270aSSushmita Susheelendra 5680e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5690e08270aSSushmita Susheelendra 5700e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 5714cd33c48SRob Clark } 5724cd33c48SRob Clark 5730e08270aSSushmita Susheelendra void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) 57468209390SRob Clark { 57568209390SRob Clark struct drm_device *dev = obj->dev; 57668209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 57768209390SRob Clark 57868209390SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 57968209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 58068209390SRob Clark WARN_ON(obj->import_attach); 58168209390SRob Clark 5820e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 5830e08270aSSushmita Susheelendra 58468209390SRob Clark put_iova(obj); 58568209390SRob Clark 5860e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 58768209390SRob Clark 58868209390SRob Clark put_pages(obj); 58968209390SRob Clark 59068209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 59168209390SRob Clark 59268209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 59368209390SRob Clark drm_gem_free_mmap_offset(obj); 59468209390SRob Clark 59568209390SRob Clark /* Our goal here is to return as much of the memory as 59668209390SRob Clark * is possible back to the system as we are called from OOM. 59768209390SRob Clark * To do this we must instruct the shmfs to drop all of its 59868209390SRob Clark * backing pages, *now*. 59968209390SRob Clark */ 60068209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 60168209390SRob Clark 60268209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 60368209390SRob Clark 0, (loff_t)-1); 6040e08270aSSushmita Susheelendra 6050e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 60668209390SRob Clark } 60768209390SRob Clark 6080e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj) 609e1e9db2cSRob Clark { 610e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 611e1e9db2cSRob Clark 6120e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 6130e08270aSSushmita Susheelendra 614e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 615e1e9db2cSRob Clark return; 616e1e9db2cSRob Clark 617e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 618e1e9db2cSRob Clark msm_obj->vaddr = NULL; 619e1e9db2cSRob Clark } 620e1e9db2cSRob Clark 6210e08270aSSushmita Susheelendra void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) 6220e08270aSSushmita Susheelendra { 6230e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6240e08270aSSushmita Susheelendra 6250e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6260e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 6270e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6280e08270aSSushmita Susheelendra } 6290e08270aSSushmita Susheelendra 630b6295f9aSRob Clark /* must be called before _move_to_active().. */ 631b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 632b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 633b6295f9aSRob Clark { 634b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 635b6295f9aSRob Clark struct reservation_object_list *fobj; 636f54d1867SChris Wilson struct dma_fence *fence; 637b6295f9aSRob Clark int i, ret; 638b6295f9aSRob Clark 639b6295f9aSRob Clark fobj = reservation_object_get_list(msm_obj->resv); 640b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 641b6295f9aSRob Clark fence = reservation_object_get_excl(msm_obj->resv); 642b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 643b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 644f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 645b6295f9aSRob Clark if (ret) 646b6295f9aSRob Clark return ret; 647b6295f9aSRob Clark } 648b6295f9aSRob Clark } 649b6295f9aSRob Clark 650b6295f9aSRob Clark if (!exclusive || !fobj) 651b6295f9aSRob Clark return 0; 652b6295f9aSRob Clark 653b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 654b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 655b6295f9aSRob Clark reservation_object_held(msm_obj->resv)); 656b6295f9aSRob Clark if (fence->context != fctx->context) { 657f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 658b6295f9aSRob Clark if (ret) 659b6295f9aSRob Clark return ret; 660b6295f9aSRob Clark } 661b6295f9aSRob Clark } 662b6295f9aSRob Clark 663b6295f9aSRob Clark return 0; 664b6295f9aSRob Clark } 665b6295f9aSRob Clark 6667198e6b0SRob Clark void msm_gem_move_to_active(struct drm_gem_object *obj, 667f54d1867SChris Wilson struct msm_gpu *gpu, bool exclusive, struct dma_fence *fence) 6687198e6b0SRob Clark { 6697198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6704cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 6717198e6b0SRob Clark msm_obj->gpu = gpu; 672b6295f9aSRob Clark if (exclusive) 673b6295f9aSRob Clark reservation_object_add_excl_fence(msm_obj->resv, fence); 674bf6811f3SRob Clark else 675b6295f9aSRob Clark reservation_object_add_shared_fence(msm_obj->resv, fence); 6767198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 6777198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 6787198e6b0SRob Clark } 6797198e6b0SRob Clark 6807198e6b0SRob Clark void msm_gem_move_to_inactive(struct drm_gem_object *obj) 6817198e6b0SRob Clark { 6827198e6b0SRob Clark struct drm_device *dev = obj->dev; 6837198e6b0SRob Clark struct msm_drm_private *priv = dev->dev_private; 6847198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6857198e6b0SRob Clark 6867198e6b0SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 6877198e6b0SRob Clark 6887198e6b0SRob Clark msm_obj->gpu = NULL; 6897198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 6907198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 6917198e6b0SRob Clark } 6927198e6b0SRob Clark 693ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 694ba00c3f2SRob Clark { 695b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 696b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 697f755e227SChris Wilson unsigned long remain = 698f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 699f755e227SChris Wilson long ret; 700b6295f9aSRob Clark 701b6295f9aSRob Clark ret = reservation_object_wait_timeout_rcu(msm_obj->resv, write, 702f755e227SChris Wilson true, remain); 703f755e227SChris Wilson if (ret == 0) 704f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 705f755e227SChris Wilson else if (ret < 0) 706f755e227SChris Wilson return ret; 707ba00c3f2SRob Clark 7087198e6b0SRob Clark /* TODO cache maintenance */ 7097198e6b0SRob Clark 710b6295f9aSRob Clark return 0; 7117198e6b0SRob Clark } 7127198e6b0SRob Clark 7137198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 7147198e6b0SRob Clark { 7157198e6b0SRob Clark /* TODO cache maintenance */ 716c8afe684SRob Clark return 0; 717c8afe684SRob Clark } 718c8afe684SRob Clark 719c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 720f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 721b6295f9aSRob Clark struct seq_file *m) 722b6295f9aSRob Clark { 723f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 724b6295f9aSRob Clark seq_printf(m, "\t%9s: %s %s seq %u\n", type, 725b6295f9aSRob Clark fence->ops->get_driver_name(fence), 726b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 727b6295f9aSRob Clark fence->seqno); 728b6295f9aSRob Clark } 729b6295f9aSRob Clark 730c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 731c8afe684SRob Clark { 732c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 733b6295f9aSRob Clark struct reservation_object *robj = msm_obj->resv; 734b6295f9aSRob Clark struct reservation_object_list *fobj; 735f54d1867SChris Wilson struct dma_fence *fence; 7364b85f7f5SRob Clark struct msm_gem_vma *vma; 737c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 7384cd33c48SRob Clark const char *madv; 739c8afe684SRob Clark 7400e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 741b6295f9aSRob Clark 7424cd33c48SRob Clark switch (msm_obj->madv) { 7434cd33c48SRob Clark case __MSM_MADV_PURGED: 7444cd33c48SRob Clark madv = " purged"; 7454cd33c48SRob Clark break; 7464cd33c48SRob Clark case MSM_MADV_DONTNEED: 7474cd33c48SRob Clark madv = " purgeable"; 7484cd33c48SRob Clark break; 7494cd33c48SRob Clark case MSM_MADV_WILLNEED: 7504cd33c48SRob Clark default: 7514cd33c48SRob Clark madv = ""; 7524cd33c48SRob Clark break; 7534cd33c48SRob Clark } 7544cd33c48SRob Clark 755667ce33eSRob Clark seq_printf(m, "%08x: %c %2d (%2d) %08llx %p\t", 7567198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 7572c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 758667ce33eSRob Clark off, msm_obj->vaddr); 759667ce33eSRob Clark 7604b85f7f5SRob Clark /* FIXME: we need to print the address space here too */ 7614b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) 7624b85f7f5SRob Clark seq_printf(m, " %08llx", vma->iova); 763667ce33eSRob Clark 764667ce33eSRob Clark seq_printf(m, " %zu%s\n", obj->size, madv); 765b6295f9aSRob Clark 766b6295f9aSRob Clark rcu_read_lock(); 767b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 768b6295f9aSRob Clark if (fobj) { 769b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 770b6295f9aSRob Clark 771b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 772b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 773b6295f9aSRob Clark describe_fence(fence, "Shared", m); 774b6295f9aSRob Clark } 775b6295f9aSRob Clark } 776b6295f9aSRob Clark 777b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 778b6295f9aSRob Clark if (fence) 779b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 780b6295f9aSRob Clark rcu_read_unlock(); 7810e08270aSSushmita Susheelendra 7820e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 783c8afe684SRob Clark } 784c8afe684SRob Clark 785c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 786c8afe684SRob Clark { 787c8afe684SRob Clark struct msm_gem_object *msm_obj; 788c8afe684SRob Clark int count = 0; 789c8afe684SRob Clark size_t size = 0; 790c8afe684SRob Clark 791c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 792c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 793c8afe684SRob Clark seq_printf(m, " "); 794c8afe684SRob Clark msm_gem_describe(obj, m); 795c8afe684SRob Clark count++; 796c8afe684SRob Clark size += obj->size; 797c8afe684SRob Clark } 798c8afe684SRob Clark 799c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 800c8afe684SRob Clark } 801c8afe684SRob Clark #endif 802c8afe684SRob Clark 803d71b6bd8SRob Clark /* don't call directly! Use drm_gem_object_put() and friends */ 804c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 805c8afe684SRob Clark { 806c8afe684SRob Clark struct drm_device *dev = obj->dev; 807c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 808c8afe684SRob Clark 809c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 810c8afe684SRob Clark 8117198e6b0SRob Clark /* object should not be on active list: */ 8127198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 8137198e6b0SRob Clark 814c8afe684SRob Clark list_del(&msm_obj->mm_list); 815c8afe684SRob Clark 8160e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 8170e08270aSSushmita Susheelendra 8184fe5f65eSRob Clark put_iova(obj); 819c8afe684SRob Clark 82005b84911SRob Clark if (obj->import_attach) { 82105b84911SRob Clark if (msm_obj->vaddr) 82205b84911SRob Clark dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); 82305b84911SRob Clark 82405b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 82505b84911SRob Clark * ours, just free the array we allocated: 82605b84911SRob Clark */ 82705b84911SRob Clark if (msm_obj->pages) 8282098105eSMichal Hocko kvfree(msm_obj->pages); 82905b84911SRob Clark 830f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 83105b84911SRob Clark } else { 8320e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 833c8afe684SRob Clark put_pages(obj); 83405b84911SRob Clark } 835c8afe684SRob Clark 8367198e6b0SRob Clark if (msm_obj->resv == &msm_obj->_resv) 8377198e6b0SRob Clark reservation_object_fini(msm_obj->resv); 8387198e6b0SRob Clark 839c8afe684SRob Clark drm_gem_object_release(obj); 840c8afe684SRob Clark 8410e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 842c8afe684SRob Clark kfree(msm_obj); 843c8afe684SRob Clark } 844c8afe684SRob Clark 845c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 846c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 847c8afe684SRob Clark uint32_t size, uint32_t flags, uint32_t *handle) 848c8afe684SRob Clark { 849c8afe684SRob Clark struct drm_gem_object *obj; 850c8afe684SRob Clark int ret; 851c8afe684SRob Clark 852c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 853c8afe684SRob Clark 854c8afe684SRob Clark if (IS_ERR(obj)) 855c8afe684SRob Clark return PTR_ERR(obj); 856c8afe684SRob Clark 857c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 858c8afe684SRob Clark 859c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 860dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 861c8afe684SRob Clark 862c8afe684SRob Clark return ret; 863c8afe684SRob Clark } 864c8afe684SRob Clark 86505b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 86605b84911SRob Clark uint32_t size, uint32_t flags, 86779f0e202SRob Clark struct reservation_object *resv, 8680e08270aSSushmita Susheelendra struct drm_gem_object **obj, 8690e08270aSSushmita Susheelendra bool struct_mutex_locked) 870c8afe684SRob Clark { 871c8afe684SRob Clark struct msm_drm_private *priv = dev->dev_private; 872c8afe684SRob Clark struct msm_gem_object *msm_obj; 873c8afe684SRob Clark 874c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 875c8afe684SRob Clark case MSM_BO_UNCACHED: 876c8afe684SRob Clark case MSM_BO_CACHED: 877c8afe684SRob Clark case MSM_BO_WC: 878c8afe684SRob Clark break; 879c8afe684SRob Clark default: 880c8afe684SRob Clark dev_err(dev->dev, "invalid cache flag: %x\n", 881c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 88205b84911SRob Clark return -EINVAL; 883c8afe684SRob Clark } 884c8afe684SRob Clark 885667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 88605b84911SRob Clark if (!msm_obj) 88705b84911SRob Clark return -ENOMEM; 888c8afe684SRob Clark 8890e08270aSSushmita Susheelendra mutex_init(&msm_obj->lock); 8900e08270aSSushmita Susheelendra 891c8afe684SRob Clark msm_obj->flags = flags; 8924cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 893c8afe684SRob Clark 89479f0e202SRob Clark if (resv) { 89579f0e202SRob Clark msm_obj->resv = resv; 89679f0e202SRob Clark } else { 8977198e6b0SRob Clark msm_obj->resv = &msm_obj->_resv; 8987198e6b0SRob Clark reservation_object_init(msm_obj->resv); 89979f0e202SRob Clark } 900c8afe684SRob Clark 9017198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 9024b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 9034b85f7f5SRob Clark 9040e08270aSSushmita Susheelendra if (struct_mutex_locked) { 9050e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 906c8afe684SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9070e08270aSSushmita Susheelendra } else { 9080e08270aSSushmita Susheelendra mutex_lock(&dev->struct_mutex); 9090e08270aSSushmita Susheelendra list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9100e08270aSSushmita Susheelendra mutex_unlock(&dev->struct_mutex); 9110e08270aSSushmita Susheelendra } 912c8afe684SRob Clark 91305b84911SRob Clark *obj = &msm_obj->base; 91405b84911SRob Clark 91505b84911SRob Clark return 0; 91605b84911SRob Clark } 91705b84911SRob Clark 9180e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 9190e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 92005b84911SRob Clark { 921f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 922871d812aSRob Clark struct drm_gem_object *obj = NULL; 923f4839bd5SRob Clark bool use_vram = false; 92405b84911SRob Clark int ret; 92505b84911SRob Clark 92605b84911SRob Clark size = PAGE_ALIGN(size); 92705b84911SRob Clark 928f4839bd5SRob Clark if (!iommu_present(&platform_bus_type)) 929f4839bd5SRob Clark use_vram = true; 930f4839bd5SRob Clark else if ((flags & MSM_BO_STOLEN) && priv->vram.size) 931f4839bd5SRob Clark use_vram = true; 932f4839bd5SRob Clark 933f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 934f4839bd5SRob Clark return ERR_PTR(-EINVAL); 935f4839bd5SRob Clark 9361a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 9371a5dff5dSJordan Crouse * infrastructure grumpy 9381a5dff5dSJordan Crouse */ 9391a5dff5dSJordan Crouse if (size == 0) 9401a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 9411a5dff5dSJordan Crouse 9420e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, flags, NULL, &obj, struct_mutex_locked); 94305b84911SRob Clark if (ret) 94405b84911SRob Clark goto fail; 94505b84911SRob Clark 946f4839bd5SRob Clark if (use_vram) { 9474b85f7f5SRob Clark struct msm_gem_vma *vma; 948f4839bd5SRob Clark struct page **pages; 949b3949a9aSHans Verkuil struct msm_gem_object *msm_obj = to_msm_bo(obj); 950b3949a9aSHans Verkuil 951b3949a9aSHans Verkuil mutex_lock(&msm_obj->lock); 952f4839bd5SRob Clark 9534b85f7f5SRob Clark vma = add_vma(obj, NULL); 954b3949a9aSHans Verkuil mutex_unlock(&msm_obj->lock); 9554b85f7f5SRob Clark if (IS_ERR(vma)) { 9564b85f7f5SRob Clark ret = PTR_ERR(vma); 9574b85f7f5SRob Clark goto fail; 9584b85f7f5SRob Clark } 9594b85f7f5SRob Clark 9604b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 9614b85f7f5SRob Clark 962f4839bd5SRob Clark drm_gem_private_object_init(dev, obj, size); 963f4839bd5SRob Clark 964f4839bd5SRob Clark pages = get_pages(obj); 965f4839bd5SRob Clark if (IS_ERR(pages)) { 966f4839bd5SRob Clark ret = PTR_ERR(pages); 967f4839bd5SRob Clark goto fail; 968f4839bd5SRob Clark } 9694b85f7f5SRob Clark 9704b85f7f5SRob Clark vma->iova = physaddr(obj); 971f4839bd5SRob Clark } else { 97205b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 97305b84911SRob Clark if (ret) 97405b84911SRob Clark goto fail; 975871d812aSRob Clark } 97605b84911SRob Clark 97705b84911SRob Clark return obj; 97805b84911SRob Clark 97905b84911SRob Clark fail: 980dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 98105b84911SRob Clark return ERR_PTR(ret); 98205b84911SRob Clark } 98305b84911SRob Clark 9840e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 9850e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 9860e08270aSSushmita Susheelendra { 9870e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 9880e08270aSSushmita Susheelendra } 9890e08270aSSushmita Susheelendra 9900e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 9910e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 9920e08270aSSushmita Susheelendra { 9930e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 9940e08270aSSushmita Susheelendra } 9950e08270aSSushmita Susheelendra 99605b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 99779f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 99805b84911SRob Clark { 99905b84911SRob Clark struct msm_gem_object *msm_obj; 100005b84911SRob Clark struct drm_gem_object *obj; 100179f0e202SRob Clark uint32_t size; 100205b84911SRob Clark int ret, npages; 100305b84911SRob Clark 1004871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1005871d812aSRob Clark if (!iommu_present(&platform_bus_type)) { 1006871d812aSRob Clark dev_err(dev->dev, "cannot import without IOMMU\n"); 1007871d812aSRob Clark return ERR_PTR(-EINVAL); 1008871d812aSRob Clark } 1009871d812aSRob Clark 101079f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 101105b84911SRob Clark 10120e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, MSM_BO_WC, dmabuf->resv, &obj, false); 101305b84911SRob Clark if (ret) 101405b84911SRob Clark goto fail; 101505b84911SRob Clark 101605b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 101705b84911SRob Clark 101805b84911SRob Clark npages = size / PAGE_SIZE; 101905b84911SRob Clark 102005b84911SRob Clark msm_obj = to_msm_bo(obj); 10210e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 102205b84911SRob Clark msm_obj->sgt = sgt; 10232098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 102405b84911SRob Clark if (!msm_obj->pages) { 10250e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 102605b84911SRob Clark ret = -ENOMEM; 102705b84911SRob Clark goto fail; 102805b84911SRob Clark } 102905b84911SRob Clark 103005b84911SRob Clark ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); 10310e08270aSSushmita Susheelendra if (ret) { 10320e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 103305b84911SRob Clark goto fail; 10340e08270aSSushmita Susheelendra } 103505b84911SRob Clark 10360e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1037c8afe684SRob Clark return obj; 1038c8afe684SRob Clark 1039c8afe684SRob Clark fail: 1040dc9a9b32SSteve Kowalik drm_gem_object_put_unlocked(obj); 1041c8afe684SRob Clark return ERR_PTR(ret); 1042c8afe684SRob Clark } 10438223286dSJordan Crouse 10448223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10458223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10468223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 10478223286dSJordan Crouse { 10488223286dSJordan Crouse void *vaddr; 10498223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 10508223286dSJordan Crouse int ret; 10518223286dSJordan Crouse 10528223286dSJordan Crouse if (IS_ERR(obj)) 10538223286dSJordan Crouse return ERR_CAST(obj); 10548223286dSJordan Crouse 10558223286dSJordan Crouse if (iova) { 10568223286dSJordan Crouse ret = msm_gem_get_iova(obj, aspace, iova); 10578223286dSJordan Crouse if (ret) { 1058dc9a9b32SSteve Kowalik drm_gem_object_put(obj); 10598223286dSJordan Crouse return ERR_PTR(ret); 10608223286dSJordan Crouse } 10618223286dSJordan Crouse } 10628223286dSJordan Crouse 10638223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1064c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 10658223286dSJordan Crouse msm_gem_put_iova(obj, aspace); 1066dc9a9b32SSteve Kowalik drm_gem_object_put(obj); 1067c9811d0fSWei Yongjun return ERR_CAST(vaddr); 10688223286dSJordan Crouse } 10698223286dSJordan Crouse 10708223286dSJordan Crouse if (bo) 10718223286dSJordan Crouse *bo = obj; 10728223286dSJordan Crouse 10738223286dSJordan Crouse return vaddr; 10748223286dSJordan Crouse } 10758223286dSJordan Crouse 10768223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10778223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10788223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 10798223286dSJordan Crouse { 10808223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 10818223286dSJordan Crouse } 10828223286dSJordan Crouse 10838223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 10848223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10858223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 10868223286dSJordan Crouse { 10878223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 10888223286dSJordan Crouse } 1089