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) { 135c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 136c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 137c8afe684SRob Clark */ 138c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 139c8afe684SRob Clark dma_unmap_sg(obj->dev->dev, msm_obj->sgt->sgl, 140c8afe684SRob Clark msm_obj->sgt->nents, DMA_BIDIRECTIONAL); 14162e3a3e3SPrakash Kamliya 14262e3a3e3SPrakash Kamliya if (msm_obj->sgt) 143c8afe684SRob Clark sg_free_table(msm_obj->sgt); 14462e3a3e3SPrakash Kamliya 145c8afe684SRob Clark kfree(msm_obj->sgt); 146c8afe684SRob Clark 147072f1f91SRob Clark if (use_pages(obj)) 148c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1490e08270aSSushmita Susheelendra else 1500e08270aSSushmita Susheelendra put_pages_vram(obj); 151871d812aSRob Clark 152c8afe684SRob Clark msm_obj->pages = NULL; 153c8afe684SRob Clark } 154c8afe684SRob Clark } 155c8afe684SRob Clark 15605b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 15705b84911SRob Clark { 1580e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 15905b84911SRob Clark struct page **p; 1600e08270aSSushmita Susheelendra 1610e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 1620e08270aSSushmita Susheelendra 1630e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 1640e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1650e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 1660e08270aSSushmita Susheelendra } 1670e08270aSSushmita Susheelendra 16805b84911SRob Clark p = get_pages(obj); 1690e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 17005b84911SRob Clark return p; 17105b84911SRob Clark } 17205b84911SRob Clark 17305b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 17405b84911SRob Clark { 17505b84911SRob Clark /* when we start tracking the pin count, then do something here */ 17605b84911SRob Clark } 17705b84911SRob Clark 178c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 179c8afe684SRob Clark struct vm_area_struct *vma) 180c8afe684SRob Clark { 181c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 182c8afe684SRob Clark 183c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 184c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 185c8afe684SRob Clark 186c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 187c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 188c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 189c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 190c8afe684SRob Clark } else { 191c8afe684SRob Clark /* 192c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 193c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 194c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 195c8afe684SRob Clark */ 196c8afe684SRob Clark fput(vma->vm_file); 197c8afe684SRob Clark get_file(obj->filp); 198c8afe684SRob Clark vma->vm_pgoff = 0; 199c8afe684SRob Clark vma->vm_file = obj->filp; 200c8afe684SRob Clark 201c8afe684SRob Clark vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); 202c8afe684SRob Clark } 203c8afe684SRob Clark 204c8afe684SRob Clark return 0; 205c8afe684SRob Clark } 206c8afe684SRob Clark 207c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 208c8afe684SRob Clark { 209c8afe684SRob Clark int ret; 210c8afe684SRob Clark 211c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 212c8afe684SRob Clark if (ret) { 213c8afe684SRob Clark DBG("mmap failed: %d", ret); 214c8afe684SRob Clark return ret; 215c8afe684SRob Clark } 216c8afe684SRob Clark 217c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 218c8afe684SRob Clark } 219c8afe684SRob Clark 22011bac800SDave Jiang int msm_gem_fault(struct vm_fault *vmf) 221c8afe684SRob Clark { 22211bac800SDave Jiang struct vm_area_struct *vma = vmf->vma; 223c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 2240e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 225c8afe684SRob Clark struct page **pages; 226c8afe684SRob Clark unsigned long pfn; 227c8afe684SRob Clark pgoff_t pgoff; 228c8afe684SRob Clark int ret; 229c8afe684SRob Clark 2300e08270aSSushmita Susheelendra /* 2310e08270aSSushmita Susheelendra * vm_ops.open/drm_gem_mmap_obj and close get and put 2320e08270aSSushmita Susheelendra * a reference on obj. So, we dont need to hold one here. 233d78d383aSRob Clark */ 2340e08270aSSushmita Susheelendra ret = mutex_lock_interruptible(&msm_obj->lock); 235c8afe684SRob Clark if (ret) 236c8afe684SRob Clark goto out; 237c8afe684SRob Clark 2380e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 2390e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 2400e08270aSSushmita Susheelendra return VM_FAULT_SIGBUS; 2410e08270aSSushmita Susheelendra } 2420e08270aSSushmita Susheelendra 243c8afe684SRob Clark /* make sure we have pages attached now */ 244c8afe684SRob Clark pages = get_pages(obj); 245c8afe684SRob Clark if (IS_ERR(pages)) { 246c8afe684SRob Clark ret = PTR_ERR(pages); 247c8afe684SRob Clark goto out_unlock; 248c8afe684SRob Clark } 249c8afe684SRob Clark 250c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 2511a29d85eSJan Kara pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 252c8afe684SRob Clark 253871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 254c8afe684SRob Clark 2551a29d85eSJan Kara VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, 256c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 257c8afe684SRob Clark 2581a29d85eSJan Kara ret = vm_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); 259c8afe684SRob Clark 260c8afe684SRob Clark out_unlock: 2610e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 262c8afe684SRob Clark out: 263c8afe684SRob Clark switch (ret) { 264c8afe684SRob Clark case -EAGAIN: 265c8afe684SRob Clark case 0: 266c8afe684SRob Clark case -ERESTARTSYS: 267c8afe684SRob Clark case -EINTR: 268505886d5SRob Clark case -EBUSY: 269505886d5SRob Clark /* 270505886d5SRob Clark * EBUSY is ok: this just means that another thread 271505886d5SRob Clark * already did the job. 272505886d5SRob Clark */ 273c8afe684SRob Clark return VM_FAULT_NOPAGE; 274c8afe684SRob Clark case -ENOMEM: 275c8afe684SRob Clark return VM_FAULT_OOM; 276c8afe684SRob Clark default: 277c8afe684SRob Clark return VM_FAULT_SIGBUS; 278c8afe684SRob Clark } 279c8afe684SRob Clark } 280c8afe684SRob Clark 281c8afe684SRob Clark /** get mmap offset */ 282c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 283c8afe684SRob Clark { 284c8afe684SRob Clark struct drm_device *dev = obj->dev; 2850e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 286c8afe684SRob Clark int ret; 287c8afe684SRob Clark 2880e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 289c8afe684SRob Clark 290c8afe684SRob Clark /* Make it mmapable */ 291c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 292c8afe684SRob Clark 293c8afe684SRob Clark if (ret) { 294c8afe684SRob Clark dev_err(dev->dev, "could not allocate mmap offset\n"); 295c8afe684SRob Clark return 0; 296c8afe684SRob Clark } 297c8afe684SRob Clark 298c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 299c8afe684SRob Clark } 300c8afe684SRob Clark 301c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 302c8afe684SRob Clark { 303c8afe684SRob Clark uint64_t offset; 3040e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 3050e08270aSSushmita Susheelendra 3060e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 307c8afe684SRob Clark offset = mmap_offset(obj); 3080e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 309c8afe684SRob Clark return offset; 310c8afe684SRob Clark } 311c8afe684SRob Clark 3124b85f7f5SRob Clark static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, 3134b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3144b85f7f5SRob Clark { 3154b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3164b85f7f5SRob Clark struct msm_gem_vma *vma; 3174b85f7f5SRob Clark 3180e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3190e08270aSSushmita Susheelendra 3204b85f7f5SRob Clark vma = kzalloc(sizeof(*vma), GFP_KERNEL); 3214b85f7f5SRob Clark if (!vma) 3224b85f7f5SRob Clark return ERR_PTR(-ENOMEM); 3234b85f7f5SRob Clark 3244b85f7f5SRob Clark vma->aspace = aspace; 3254b85f7f5SRob Clark 3264b85f7f5SRob Clark list_add_tail(&vma->list, &msm_obj->vmas); 3274b85f7f5SRob Clark 3284b85f7f5SRob Clark return vma; 3294b85f7f5SRob Clark } 3304b85f7f5SRob Clark 3314b85f7f5SRob Clark static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, 3324b85f7f5SRob Clark struct msm_gem_address_space *aspace) 3334b85f7f5SRob Clark { 3344b85f7f5SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3354b85f7f5SRob Clark struct msm_gem_vma *vma; 3364b85f7f5SRob Clark 3370e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3384b85f7f5SRob Clark 3394b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) { 3404b85f7f5SRob Clark if (vma->aspace == aspace) 3414b85f7f5SRob Clark return vma; 3424b85f7f5SRob Clark } 3434b85f7f5SRob Clark 3444b85f7f5SRob Clark return NULL; 3454b85f7f5SRob Clark } 3464b85f7f5SRob Clark 3474b85f7f5SRob Clark static void del_vma(struct msm_gem_vma *vma) 3484b85f7f5SRob Clark { 3494b85f7f5SRob Clark if (!vma) 3504b85f7f5SRob Clark return; 3514b85f7f5SRob Clark 3524b85f7f5SRob Clark list_del(&vma->list); 3534b85f7f5SRob Clark kfree(vma); 3544b85f7f5SRob Clark } 3554b85f7f5SRob Clark 3560e08270aSSushmita Susheelendra /* Called with msm_obj->lock locked */ 3574fe5f65eSRob Clark static void 3584fe5f65eSRob Clark put_iova(struct drm_gem_object *obj) 3594fe5f65eSRob Clark { 3604fe5f65eSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3614b85f7f5SRob Clark struct msm_gem_vma *vma, *tmp; 3624fe5f65eSRob Clark 3630e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 3644fe5f65eSRob Clark 3654b85f7f5SRob Clark list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { 3664b85f7f5SRob Clark msm_gem_unmap_vma(vma->aspace, vma, msm_obj->sgt); 3674b85f7f5SRob Clark del_vma(vma); 3684fe5f65eSRob Clark } 3694fe5f65eSRob Clark } 3704fe5f65eSRob Clark 3710e08270aSSushmita Susheelendra /* get iova, taking a reference. Should have a matching put */ 3720e08270aSSushmita Susheelendra int msm_gem_get_iova(struct drm_gem_object *obj, 3738bdcd949SRob Clark struct msm_gem_address_space *aspace, uint64_t *iova) 374c8afe684SRob Clark { 375c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3764b85f7f5SRob Clark struct msm_gem_vma *vma; 377c8afe684SRob Clark int ret = 0; 378c8afe684SRob Clark 3790e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 3800e08270aSSushmita Susheelendra 3810e08270aSSushmita Susheelendra if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { 3820e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 3830e08270aSSushmita Susheelendra return -EBUSY; 3840e08270aSSushmita Susheelendra } 385cb1e3818SRob Clark 3864b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 387871d812aSRob Clark 3884b85f7f5SRob Clark if (!vma) { 3894b85f7f5SRob Clark struct page **pages; 390871d812aSRob Clark 3914b85f7f5SRob Clark vma = add_vma(obj, aspace); 39271e3dfa1SDan Carpenter if (IS_ERR(vma)) { 39371e3dfa1SDan Carpenter ret = PTR_ERR(vma); 39471e3dfa1SDan Carpenter goto unlock; 39571e3dfa1SDan Carpenter } 3964b85f7f5SRob Clark 3974b85f7f5SRob Clark pages = get_pages(obj); 3984b85f7f5SRob Clark if (IS_ERR(pages)) { 3994b85f7f5SRob Clark ret = PTR_ERR(pages); 4004b85f7f5SRob Clark goto fail; 401c8afe684SRob Clark } 402c8afe684SRob Clark 4034b85f7f5SRob Clark ret = msm_gem_map_vma(aspace, vma, msm_obj->sgt, 4044b85f7f5SRob Clark obj->size >> PAGE_SHIFT); 4054b85f7f5SRob Clark if (ret) 4064b85f7f5SRob Clark goto fail; 4074b85f7f5SRob Clark } 4084b85f7f5SRob Clark 4094b85f7f5SRob Clark *iova = vma->iova; 4100e08270aSSushmita Susheelendra 4110e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4124b85f7f5SRob Clark return 0; 4134b85f7f5SRob Clark 4144b85f7f5SRob Clark fail: 4154b85f7f5SRob Clark del_vma(vma); 41671e3dfa1SDan Carpenter unlock: 4170e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 418c8afe684SRob Clark return ret; 419c8afe684SRob Clark } 420c8afe684SRob Clark 4212638d90aSRob Clark /* get iova without taking a reference, used in places where you have 4222638d90aSRob Clark * already done a 'msm_gem_get_iova()'. 4232638d90aSRob Clark */ 4248bdcd949SRob Clark uint64_t msm_gem_iova(struct drm_gem_object *obj, 4258bdcd949SRob Clark struct msm_gem_address_space *aspace) 4262638d90aSRob Clark { 4270e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4284b85f7f5SRob Clark struct msm_gem_vma *vma; 4294b85f7f5SRob Clark 4300e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4314b85f7f5SRob Clark vma = lookup_vma(obj, aspace); 4320e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4334b85f7f5SRob Clark WARN_ON(!vma); 4344b85f7f5SRob Clark 4354b85f7f5SRob Clark return vma ? vma->iova : 0; 4362638d90aSRob Clark } 4372638d90aSRob Clark 4388bdcd949SRob Clark void msm_gem_put_iova(struct drm_gem_object *obj, 4398bdcd949SRob Clark struct msm_gem_address_space *aspace) 440c8afe684SRob Clark { 441c8afe684SRob Clark // XXX TODO .. 442c8afe684SRob Clark // NOTE: probably don't need a _locked() version.. we wouldn't 443c8afe684SRob Clark // normally unmap here, but instead just mark that it could be 444c8afe684SRob Clark // unmapped (if the iova refcnt drops to zero), but then later 445c8afe684SRob Clark // if another _get_iova_locked() fails we can start unmapping 446c8afe684SRob Clark // things that are no longer needed.. 447c8afe684SRob Clark } 448c8afe684SRob Clark 449c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 450c8afe684SRob Clark struct drm_mode_create_dumb *args) 451c8afe684SRob Clark { 452c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 453c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 454c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 455c8afe684SRob Clark MSM_BO_SCANOUT | MSM_BO_WC, &args->handle); 456c8afe684SRob Clark } 457c8afe684SRob Clark 458c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 459c8afe684SRob Clark uint32_t handle, uint64_t *offset) 460c8afe684SRob Clark { 461c8afe684SRob Clark struct drm_gem_object *obj; 462c8afe684SRob Clark int ret = 0; 463c8afe684SRob Clark 464c8afe684SRob Clark /* GEM does all our handle to object mapping */ 465a8ad0bd8SChris Wilson obj = drm_gem_object_lookup(file, handle); 466c8afe684SRob Clark if (obj == NULL) { 467c8afe684SRob Clark ret = -ENOENT; 468c8afe684SRob Clark goto fail; 469c8afe684SRob Clark } 470c8afe684SRob Clark 471c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 472c8afe684SRob Clark 473c8afe684SRob Clark drm_gem_object_unreference_unlocked(obj); 474c8afe684SRob Clark 475c8afe684SRob Clark fail: 476c8afe684SRob Clark return ret; 477c8afe684SRob Clark } 478c8afe684SRob Clark 479fad33f4bSRob Clark static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) 480c8afe684SRob Clark { 4810e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 4820e08270aSSushmita Susheelendra int ret = 0; 4830e08270aSSushmita Susheelendra 4840e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 4850e08270aSSushmita Susheelendra 486fad33f4bSRob Clark if (WARN_ON(msm_obj->madv > madv)) { 487fad33f4bSRob Clark dev_err(obj->dev->dev, "Invalid madv state: %u vs %u\n", 488fad33f4bSRob Clark msm_obj->madv, madv); 4890e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 4900e08270aSSushmita Susheelendra return ERR_PTR(-EBUSY); 491c8afe684SRob Clark } 492c8afe684SRob Clark 4930e08270aSSushmita Susheelendra /* increment vmap_count *before* vmap() call, so shrinker can 4940e08270aSSushmita Susheelendra * check vmap_count (is_vunmapable()) outside of msm_obj->lock. 4950e08270aSSushmita Susheelendra * This guarantees that we won't try to msm_gem_vunmap() this 4960e08270aSSushmita Susheelendra * same object from within the vmap() call (while we already 4970e08270aSSushmita Susheelendra * hold msm_obj->lock) 4980e08270aSSushmita Susheelendra */ 4990e08270aSSushmita Susheelendra msm_obj->vmap_count++; 5000e08270aSSushmita Susheelendra 5010e08270aSSushmita Susheelendra if (!msm_obj->vaddr) { 5020e08270aSSushmita Susheelendra struct page **pages = get_pages(obj); 5030e08270aSSushmita Susheelendra if (IS_ERR(pages)) { 5040e08270aSSushmita Susheelendra ret = PTR_ERR(pages); 5050e08270aSSushmita Susheelendra goto fail; 5060e08270aSSushmita Susheelendra } 5070e08270aSSushmita Susheelendra msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 5080e08270aSSushmita Susheelendra VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 5090e08270aSSushmita Susheelendra if (msm_obj->vaddr == NULL) { 5100e08270aSSushmita Susheelendra ret = -ENOMEM; 5110e08270aSSushmita Susheelendra goto fail; 5120e08270aSSushmita Susheelendra } 5130e08270aSSushmita Susheelendra } 5140e08270aSSushmita Susheelendra 5150e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5160e08270aSSushmita Susheelendra return msm_obj->vaddr; 5170e08270aSSushmita Susheelendra 5180e08270aSSushmita Susheelendra fail: 519e1e9db2cSRob Clark msm_obj->vmap_count--; 5200e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5210e08270aSSushmita Susheelendra return ERR_PTR(ret); 52218f23049SRob Clark } 52318f23049SRob Clark 524fad33f4bSRob Clark void *msm_gem_get_vaddr(struct drm_gem_object *obj) 525fad33f4bSRob Clark { 526fad33f4bSRob Clark return get_vaddr(obj, MSM_MADV_WILLNEED); 527fad33f4bSRob Clark } 528fad33f4bSRob Clark 529fad33f4bSRob Clark /* 530fad33f4bSRob Clark * Don't use this! It is for the very special case of dumping 531fad33f4bSRob Clark * submits from GPU hangs or faults, were the bo may already 532fad33f4bSRob Clark * be MSM_MADV_DONTNEED, but we know the buffer is still on the 533fad33f4bSRob Clark * active list. 534fad33f4bSRob Clark */ 535fad33f4bSRob Clark void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) 536fad33f4bSRob Clark { 537fad33f4bSRob Clark return get_vaddr(obj, __MSM_MADV_PURGED); 538fad33f4bSRob Clark } 539fad33f4bSRob Clark 54018f23049SRob Clark void msm_gem_put_vaddr(struct drm_gem_object *obj) 54118f23049SRob Clark { 5420e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 5430e08270aSSushmita Susheelendra 5440e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5450e08270aSSushmita Susheelendra WARN_ON(msm_obj->vmap_count < 1); 5460e08270aSSushmita Susheelendra msm_obj->vmap_count--; 5470e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 54818f23049SRob Clark } 54918f23049SRob Clark 5504cd33c48SRob Clark /* Update madvise status, returns true if not purged, else 5514cd33c48SRob Clark * false or -errno. 5524cd33c48SRob Clark */ 5534cd33c48SRob Clark int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 5544cd33c48SRob Clark { 5554cd33c48SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 5564cd33c48SRob Clark 5570e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 5580e08270aSSushmita Susheelendra 5594cd33c48SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 5604cd33c48SRob Clark 5614cd33c48SRob Clark if (msm_obj->madv != __MSM_MADV_PURGED) 5624cd33c48SRob Clark msm_obj->madv = madv; 5634cd33c48SRob Clark 5640e08270aSSushmita Susheelendra madv = msm_obj->madv; 5650e08270aSSushmita Susheelendra 5660e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 5670e08270aSSushmita Susheelendra 5680e08270aSSushmita Susheelendra return (madv != __MSM_MADV_PURGED); 5694cd33c48SRob Clark } 5704cd33c48SRob Clark 5710e08270aSSushmita Susheelendra void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) 57268209390SRob Clark { 57368209390SRob Clark struct drm_device *dev = obj->dev; 57468209390SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 57568209390SRob Clark 57668209390SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 57768209390SRob Clark WARN_ON(!is_purgeable(msm_obj)); 57868209390SRob Clark WARN_ON(obj->import_attach); 57968209390SRob Clark 5800e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 5810e08270aSSushmita Susheelendra 58268209390SRob Clark put_iova(obj); 58368209390SRob Clark 5840e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 58568209390SRob Clark 58668209390SRob Clark put_pages(obj); 58768209390SRob Clark 58868209390SRob Clark msm_obj->madv = __MSM_MADV_PURGED; 58968209390SRob Clark 59068209390SRob Clark drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 59168209390SRob Clark drm_gem_free_mmap_offset(obj); 59268209390SRob Clark 59368209390SRob Clark /* Our goal here is to return as much of the memory as 59468209390SRob Clark * is possible back to the system as we are called from OOM. 59568209390SRob Clark * To do this we must instruct the shmfs to drop all of its 59668209390SRob Clark * backing pages, *now*. 59768209390SRob Clark */ 59868209390SRob Clark shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 59968209390SRob Clark 60068209390SRob Clark invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 60168209390SRob Clark 0, (loff_t)-1); 6020e08270aSSushmita Susheelendra 6030e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 60468209390SRob Clark } 60568209390SRob Clark 6060e08270aSSushmita Susheelendra static void msm_gem_vunmap_locked(struct drm_gem_object *obj) 607e1e9db2cSRob Clark { 608e1e9db2cSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 609e1e9db2cSRob Clark 6100e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&msm_obj->lock)); 6110e08270aSSushmita Susheelendra 612e1e9db2cSRob Clark if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) 613e1e9db2cSRob Clark return; 614e1e9db2cSRob Clark 615e1e9db2cSRob Clark vunmap(msm_obj->vaddr); 616e1e9db2cSRob Clark msm_obj->vaddr = NULL; 617e1e9db2cSRob Clark } 618e1e9db2cSRob Clark 6190e08270aSSushmita Susheelendra void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) 6200e08270aSSushmita Susheelendra { 6210e08270aSSushmita Susheelendra struct msm_gem_object *msm_obj = to_msm_bo(obj); 6220e08270aSSushmita Susheelendra 6230e08270aSSushmita Susheelendra mutex_lock_nested(&msm_obj->lock, subclass); 6240e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 6250e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 6260e08270aSSushmita Susheelendra } 6270e08270aSSushmita Susheelendra 628b6295f9aSRob Clark /* must be called before _move_to_active().. */ 629b6295f9aSRob Clark int msm_gem_sync_object(struct drm_gem_object *obj, 630b6295f9aSRob Clark struct msm_fence_context *fctx, bool exclusive) 631b6295f9aSRob Clark { 632b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 633b6295f9aSRob Clark struct reservation_object_list *fobj; 634f54d1867SChris Wilson struct dma_fence *fence; 635b6295f9aSRob Clark int i, ret; 636b6295f9aSRob Clark 637b6295f9aSRob Clark fobj = reservation_object_get_list(msm_obj->resv); 638b6295f9aSRob Clark if (!fobj || (fobj->shared_count == 0)) { 639b6295f9aSRob Clark fence = reservation_object_get_excl(msm_obj->resv); 640b6295f9aSRob Clark /* don't need to wait on our own fences, since ring is fifo */ 641b6295f9aSRob Clark if (fence && (fence->context != fctx->context)) { 642f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 643b6295f9aSRob Clark if (ret) 644b6295f9aSRob Clark return ret; 645b6295f9aSRob Clark } 646b6295f9aSRob Clark } 647b6295f9aSRob Clark 648b6295f9aSRob Clark if (!exclusive || !fobj) 649b6295f9aSRob Clark return 0; 650b6295f9aSRob Clark 651b6295f9aSRob Clark for (i = 0; i < fobj->shared_count; i++) { 652b6295f9aSRob Clark fence = rcu_dereference_protected(fobj->shared[i], 653b6295f9aSRob Clark reservation_object_held(msm_obj->resv)); 654b6295f9aSRob Clark if (fence->context != fctx->context) { 655f54d1867SChris Wilson ret = dma_fence_wait(fence, true); 656b6295f9aSRob Clark if (ret) 657b6295f9aSRob Clark return ret; 658b6295f9aSRob Clark } 659b6295f9aSRob Clark } 660b6295f9aSRob Clark 661b6295f9aSRob Clark return 0; 662b6295f9aSRob Clark } 663b6295f9aSRob Clark 6647198e6b0SRob Clark void msm_gem_move_to_active(struct drm_gem_object *obj, 665f54d1867SChris Wilson struct msm_gpu *gpu, bool exclusive, struct dma_fence *fence) 6667198e6b0SRob Clark { 6677198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6684cd33c48SRob Clark WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); 6697198e6b0SRob Clark msm_obj->gpu = gpu; 670b6295f9aSRob Clark if (exclusive) 671b6295f9aSRob Clark reservation_object_add_excl_fence(msm_obj->resv, fence); 672bf6811f3SRob Clark else 673b6295f9aSRob Clark reservation_object_add_shared_fence(msm_obj->resv, fence); 6747198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 6757198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 6767198e6b0SRob Clark } 6777198e6b0SRob Clark 6787198e6b0SRob Clark void msm_gem_move_to_inactive(struct drm_gem_object *obj) 6797198e6b0SRob Clark { 6807198e6b0SRob Clark struct drm_device *dev = obj->dev; 6817198e6b0SRob Clark struct msm_drm_private *priv = dev->dev_private; 6827198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 6837198e6b0SRob Clark 6847198e6b0SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 6857198e6b0SRob Clark 6867198e6b0SRob Clark msm_obj->gpu = NULL; 6877198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 6887198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 6897198e6b0SRob Clark } 6907198e6b0SRob Clark 691ba00c3f2SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) 692ba00c3f2SRob Clark { 693b6295f9aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 694b6295f9aSRob Clark bool write = !!(op & MSM_PREP_WRITE); 695f755e227SChris Wilson unsigned long remain = 696f755e227SChris Wilson op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); 697f755e227SChris Wilson long ret; 698b6295f9aSRob Clark 699b6295f9aSRob Clark ret = reservation_object_wait_timeout_rcu(msm_obj->resv, write, 700f755e227SChris Wilson true, remain); 701f755e227SChris Wilson if (ret == 0) 702f755e227SChris Wilson return remain == 0 ? -EBUSY : -ETIMEDOUT; 703f755e227SChris Wilson else if (ret < 0) 704f755e227SChris Wilson return ret; 705ba00c3f2SRob Clark 7067198e6b0SRob Clark /* TODO cache maintenance */ 7077198e6b0SRob Clark 708b6295f9aSRob Clark return 0; 7097198e6b0SRob Clark } 7107198e6b0SRob Clark 7117198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 7127198e6b0SRob Clark { 7137198e6b0SRob Clark /* TODO cache maintenance */ 714c8afe684SRob Clark return 0; 715c8afe684SRob Clark } 716c8afe684SRob Clark 717c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 718f54d1867SChris Wilson static void describe_fence(struct dma_fence *fence, const char *type, 719b6295f9aSRob Clark struct seq_file *m) 720b6295f9aSRob Clark { 721f54d1867SChris Wilson if (!dma_fence_is_signaled(fence)) 722b6295f9aSRob Clark seq_printf(m, "\t%9s: %s %s seq %u\n", type, 723b6295f9aSRob Clark fence->ops->get_driver_name(fence), 724b6295f9aSRob Clark fence->ops->get_timeline_name(fence), 725b6295f9aSRob Clark fence->seqno); 726b6295f9aSRob Clark } 727b6295f9aSRob Clark 728c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 729c8afe684SRob Clark { 730c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 731b6295f9aSRob Clark struct reservation_object *robj = msm_obj->resv; 732b6295f9aSRob Clark struct reservation_object_list *fobj; 733f54d1867SChris Wilson struct dma_fence *fence; 7344b85f7f5SRob Clark struct msm_gem_vma *vma; 735c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 7364cd33c48SRob Clark const char *madv; 737c8afe684SRob Clark 7380e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 739b6295f9aSRob Clark 7404cd33c48SRob Clark switch (msm_obj->madv) { 7414cd33c48SRob Clark case __MSM_MADV_PURGED: 7424cd33c48SRob Clark madv = " purged"; 7434cd33c48SRob Clark break; 7444cd33c48SRob Clark case MSM_MADV_DONTNEED: 7454cd33c48SRob Clark madv = " purgeable"; 7464cd33c48SRob Clark break; 7474cd33c48SRob Clark case MSM_MADV_WILLNEED: 7484cd33c48SRob Clark default: 7494cd33c48SRob Clark madv = ""; 7504cd33c48SRob Clark break; 7514cd33c48SRob Clark } 7524cd33c48SRob Clark 753667ce33eSRob Clark seq_printf(m, "%08x: %c %2d (%2d) %08llx %p\t", 7547198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 7552c935bc5SPeter Zijlstra obj->name, kref_read(&obj->refcount), 756667ce33eSRob Clark off, msm_obj->vaddr); 757667ce33eSRob Clark 7584b85f7f5SRob Clark /* FIXME: we need to print the address space here too */ 7594b85f7f5SRob Clark list_for_each_entry(vma, &msm_obj->vmas, list) 7604b85f7f5SRob Clark seq_printf(m, " %08llx", vma->iova); 761667ce33eSRob Clark 762667ce33eSRob Clark seq_printf(m, " %zu%s\n", obj->size, madv); 763b6295f9aSRob Clark 764b6295f9aSRob Clark rcu_read_lock(); 765b6295f9aSRob Clark fobj = rcu_dereference(robj->fence); 766b6295f9aSRob Clark if (fobj) { 767b6295f9aSRob Clark unsigned int i, shared_count = fobj->shared_count; 768b6295f9aSRob Clark 769b6295f9aSRob Clark for (i = 0; i < shared_count; i++) { 770b6295f9aSRob Clark fence = rcu_dereference(fobj->shared[i]); 771b6295f9aSRob Clark describe_fence(fence, "Shared", m); 772b6295f9aSRob Clark } 773b6295f9aSRob Clark } 774b6295f9aSRob Clark 775b6295f9aSRob Clark fence = rcu_dereference(robj->fence_excl); 776b6295f9aSRob Clark if (fence) 777b6295f9aSRob Clark describe_fence(fence, "Exclusive", m); 778b6295f9aSRob Clark rcu_read_unlock(); 7790e08270aSSushmita Susheelendra 7800e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 781c8afe684SRob Clark } 782c8afe684SRob Clark 783c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 784c8afe684SRob Clark { 785c8afe684SRob Clark struct msm_gem_object *msm_obj; 786c8afe684SRob Clark int count = 0; 787c8afe684SRob Clark size_t size = 0; 788c8afe684SRob Clark 789c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 790c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 791c8afe684SRob Clark seq_printf(m, " "); 792c8afe684SRob Clark msm_gem_describe(obj, m); 793c8afe684SRob Clark count++; 794c8afe684SRob Clark size += obj->size; 795c8afe684SRob Clark } 796c8afe684SRob Clark 797c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 798c8afe684SRob Clark } 799c8afe684SRob Clark #endif 800c8afe684SRob Clark 801c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 802c8afe684SRob Clark { 803c8afe684SRob Clark struct drm_device *dev = obj->dev; 804c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 805c8afe684SRob Clark 806c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 807c8afe684SRob Clark 8087198e6b0SRob Clark /* object should not be on active list: */ 8097198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 8107198e6b0SRob Clark 811c8afe684SRob Clark list_del(&msm_obj->mm_list); 812c8afe684SRob Clark 8130e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 8140e08270aSSushmita Susheelendra 8154fe5f65eSRob Clark put_iova(obj); 816c8afe684SRob Clark 81705b84911SRob Clark if (obj->import_attach) { 81805b84911SRob Clark if (msm_obj->vaddr) 81905b84911SRob Clark dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); 82005b84911SRob Clark 82105b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 82205b84911SRob Clark * ours, just free the array we allocated: 82305b84911SRob Clark */ 82405b84911SRob Clark if (msm_obj->pages) 8252098105eSMichal Hocko kvfree(msm_obj->pages); 82605b84911SRob Clark 827f28730c8Sjilai wang drm_prime_gem_destroy(obj, msm_obj->sgt); 82805b84911SRob Clark } else { 8290e08270aSSushmita Susheelendra msm_gem_vunmap_locked(obj); 830c8afe684SRob Clark put_pages(obj); 83105b84911SRob Clark } 832c8afe684SRob Clark 8337198e6b0SRob Clark if (msm_obj->resv == &msm_obj->_resv) 8347198e6b0SRob Clark reservation_object_fini(msm_obj->resv); 8357198e6b0SRob Clark 836c8afe684SRob Clark drm_gem_object_release(obj); 837c8afe684SRob Clark 8380e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 839c8afe684SRob Clark kfree(msm_obj); 840c8afe684SRob Clark } 841c8afe684SRob Clark 842c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 843c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 844c8afe684SRob Clark uint32_t size, uint32_t flags, uint32_t *handle) 845c8afe684SRob Clark { 846c8afe684SRob Clark struct drm_gem_object *obj; 847c8afe684SRob Clark int ret; 848c8afe684SRob Clark 849c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 850c8afe684SRob Clark 851c8afe684SRob Clark if (IS_ERR(obj)) 852c8afe684SRob Clark return PTR_ERR(obj); 853c8afe684SRob Clark 854c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 855c8afe684SRob Clark 856c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 857c8afe684SRob Clark drm_gem_object_unreference_unlocked(obj); 858c8afe684SRob Clark 859c8afe684SRob Clark return ret; 860c8afe684SRob Clark } 861c8afe684SRob Clark 86205b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 86305b84911SRob Clark uint32_t size, uint32_t flags, 86479f0e202SRob Clark struct reservation_object *resv, 8650e08270aSSushmita Susheelendra struct drm_gem_object **obj, 8660e08270aSSushmita Susheelendra bool struct_mutex_locked) 867c8afe684SRob Clark { 868c8afe684SRob Clark struct msm_drm_private *priv = dev->dev_private; 869c8afe684SRob Clark struct msm_gem_object *msm_obj; 870c8afe684SRob Clark 871c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 872c8afe684SRob Clark case MSM_BO_UNCACHED: 873c8afe684SRob Clark case MSM_BO_CACHED: 874c8afe684SRob Clark case MSM_BO_WC: 875c8afe684SRob Clark break; 876c8afe684SRob Clark default: 877c8afe684SRob Clark dev_err(dev->dev, "invalid cache flag: %x\n", 878c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 87905b84911SRob Clark return -EINVAL; 880c8afe684SRob Clark } 881c8afe684SRob Clark 882667ce33eSRob Clark msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); 88305b84911SRob Clark if (!msm_obj) 88405b84911SRob Clark return -ENOMEM; 885c8afe684SRob Clark 8860e08270aSSushmita Susheelendra mutex_init(&msm_obj->lock); 8870e08270aSSushmita Susheelendra 888c8afe684SRob Clark msm_obj->flags = flags; 8894cd33c48SRob Clark msm_obj->madv = MSM_MADV_WILLNEED; 890c8afe684SRob Clark 89179f0e202SRob Clark if (resv) { 89279f0e202SRob Clark msm_obj->resv = resv; 89379f0e202SRob Clark } else { 8947198e6b0SRob Clark msm_obj->resv = &msm_obj->_resv; 8957198e6b0SRob Clark reservation_object_init(msm_obj->resv); 89679f0e202SRob Clark } 897c8afe684SRob Clark 8987198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 8994b85f7f5SRob Clark INIT_LIST_HEAD(&msm_obj->vmas); 9004b85f7f5SRob Clark 9010e08270aSSushmita Susheelendra if (struct_mutex_locked) { 9020e08270aSSushmita Susheelendra WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 903c8afe684SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9040e08270aSSushmita Susheelendra } else { 9050e08270aSSushmita Susheelendra mutex_lock(&dev->struct_mutex); 9060e08270aSSushmita Susheelendra list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 9070e08270aSSushmita Susheelendra mutex_unlock(&dev->struct_mutex); 9080e08270aSSushmita Susheelendra } 909c8afe684SRob Clark 91005b84911SRob Clark *obj = &msm_obj->base; 91105b84911SRob Clark 91205b84911SRob Clark return 0; 91305b84911SRob Clark } 91405b84911SRob Clark 9150e08270aSSushmita Susheelendra static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, 9160e08270aSSushmita Susheelendra uint32_t size, uint32_t flags, bool struct_mutex_locked) 91705b84911SRob Clark { 918f4839bd5SRob Clark struct msm_drm_private *priv = dev->dev_private; 919871d812aSRob Clark struct drm_gem_object *obj = NULL; 920f4839bd5SRob Clark bool use_vram = false; 92105b84911SRob Clark int ret; 92205b84911SRob Clark 92305b84911SRob Clark size = PAGE_ALIGN(size); 92405b84911SRob Clark 925f4839bd5SRob Clark if (!iommu_present(&platform_bus_type)) 926f4839bd5SRob Clark use_vram = true; 927f4839bd5SRob Clark else if ((flags & MSM_BO_STOLEN) && priv->vram.size) 928f4839bd5SRob Clark use_vram = true; 929f4839bd5SRob Clark 930f4839bd5SRob Clark if (WARN_ON(use_vram && !priv->vram.size)) 931f4839bd5SRob Clark return ERR_PTR(-EINVAL); 932f4839bd5SRob Clark 9331a5dff5dSJordan Crouse /* Disallow zero sized objects as they make the underlying 9341a5dff5dSJordan Crouse * infrastructure grumpy 9351a5dff5dSJordan Crouse */ 9361a5dff5dSJordan Crouse if (size == 0) 9371a5dff5dSJordan Crouse return ERR_PTR(-EINVAL); 9381a5dff5dSJordan Crouse 9390e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, flags, NULL, &obj, struct_mutex_locked); 94005b84911SRob Clark if (ret) 94105b84911SRob Clark goto fail; 94205b84911SRob Clark 943f4839bd5SRob Clark if (use_vram) { 9444b85f7f5SRob Clark struct msm_gem_vma *vma; 945f4839bd5SRob Clark struct page **pages; 946b3949a9aSHans Verkuil struct msm_gem_object *msm_obj = to_msm_bo(obj); 947b3949a9aSHans Verkuil 948b3949a9aSHans Verkuil mutex_lock(&msm_obj->lock); 949f4839bd5SRob Clark 9504b85f7f5SRob Clark vma = add_vma(obj, NULL); 951b3949a9aSHans Verkuil mutex_unlock(&msm_obj->lock); 9524b85f7f5SRob Clark if (IS_ERR(vma)) { 9534b85f7f5SRob Clark ret = PTR_ERR(vma); 9544b85f7f5SRob Clark goto fail; 9554b85f7f5SRob Clark } 9564b85f7f5SRob Clark 9574b85f7f5SRob Clark to_msm_bo(obj)->vram_node = &vma->node; 9584b85f7f5SRob Clark 959f4839bd5SRob Clark drm_gem_private_object_init(dev, obj, size); 960f4839bd5SRob Clark 961f4839bd5SRob Clark pages = get_pages(obj); 962f4839bd5SRob Clark if (IS_ERR(pages)) { 963f4839bd5SRob Clark ret = PTR_ERR(pages); 964f4839bd5SRob Clark goto fail; 965f4839bd5SRob Clark } 9664b85f7f5SRob Clark 9674b85f7f5SRob Clark vma->iova = physaddr(obj); 968f4839bd5SRob Clark } else { 96905b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 97005b84911SRob Clark if (ret) 97105b84911SRob Clark goto fail; 972871d812aSRob Clark } 97305b84911SRob Clark 97405b84911SRob Clark return obj; 97505b84911SRob Clark 97605b84911SRob Clark fail: 9770e08270aSSushmita Susheelendra drm_gem_object_unreference_unlocked(obj); 97805b84911SRob Clark return ERR_PTR(ret); 97905b84911SRob Clark } 98005b84911SRob Clark 9810e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, 9820e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 9830e08270aSSushmita Susheelendra { 9840e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, true); 9850e08270aSSushmita Susheelendra } 9860e08270aSSushmita Susheelendra 9870e08270aSSushmita Susheelendra struct drm_gem_object *msm_gem_new(struct drm_device *dev, 9880e08270aSSushmita Susheelendra uint32_t size, uint32_t flags) 9890e08270aSSushmita Susheelendra { 9900e08270aSSushmita Susheelendra return _msm_gem_new(dev, size, flags, false); 9910e08270aSSushmita Susheelendra } 9920e08270aSSushmita Susheelendra 99305b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 99479f0e202SRob Clark struct dma_buf *dmabuf, struct sg_table *sgt) 99505b84911SRob Clark { 99605b84911SRob Clark struct msm_gem_object *msm_obj; 99705b84911SRob Clark struct drm_gem_object *obj; 99879f0e202SRob Clark uint32_t size; 99905b84911SRob Clark int ret, npages; 100005b84911SRob Clark 1001871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 1002871d812aSRob Clark if (!iommu_present(&platform_bus_type)) { 1003871d812aSRob Clark dev_err(dev->dev, "cannot import without IOMMU\n"); 1004871d812aSRob Clark return ERR_PTR(-EINVAL); 1005871d812aSRob Clark } 1006871d812aSRob Clark 100779f0e202SRob Clark size = PAGE_ALIGN(dmabuf->size); 100805b84911SRob Clark 10090e08270aSSushmita Susheelendra ret = msm_gem_new_impl(dev, size, MSM_BO_WC, dmabuf->resv, &obj, false); 101005b84911SRob Clark if (ret) 101105b84911SRob Clark goto fail; 101205b84911SRob Clark 101305b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 101405b84911SRob Clark 101505b84911SRob Clark npages = size / PAGE_SIZE; 101605b84911SRob Clark 101705b84911SRob Clark msm_obj = to_msm_bo(obj); 10180e08270aSSushmita Susheelendra mutex_lock(&msm_obj->lock); 101905b84911SRob Clark msm_obj->sgt = sgt; 10202098105eSMichal Hocko msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); 102105b84911SRob Clark if (!msm_obj->pages) { 10220e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 102305b84911SRob Clark ret = -ENOMEM; 102405b84911SRob Clark goto fail; 102505b84911SRob Clark } 102605b84911SRob Clark 102705b84911SRob Clark ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); 10280e08270aSSushmita Susheelendra if (ret) { 10290e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 103005b84911SRob Clark goto fail; 10310e08270aSSushmita Susheelendra } 103205b84911SRob Clark 10330e08270aSSushmita Susheelendra mutex_unlock(&msm_obj->lock); 1034c8afe684SRob Clark return obj; 1035c8afe684SRob Clark 1036c8afe684SRob Clark fail: 1037c8afe684SRob Clark drm_gem_object_unreference_unlocked(obj); 1038c8afe684SRob Clark return ERR_PTR(ret); 1039c8afe684SRob Clark } 10408223286dSJordan Crouse 10418223286dSJordan Crouse static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10428223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10438223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova, bool locked) 10448223286dSJordan Crouse { 10458223286dSJordan Crouse void *vaddr; 10468223286dSJordan Crouse struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); 10478223286dSJordan Crouse int ret; 10488223286dSJordan Crouse 10498223286dSJordan Crouse if (IS_ERR(obj)) 10508223286dSJordan Crouse return ERR_CAST(obj); 10518223286dSJordan Crouse 10528223286dSJordan Crouse if (iova) { 10538223286dSJordan Crouse ret = msm_gem_get_iova(obj, aspace, iova); 10548223286dSJordan Crouse if (ret) { 10558223286dSJordan Crouse drm_gem_object_unreference(obj); 10568223286dSJordan Crouse return ERR_PTR(ret); 10578223286dSJordan Crouse } 10588223286dSJordan Crouse } 10598223286dSJordan Crouse 10608223286dSJordan Crouse vaddr = msm_gem_get_vaddr(obj); 1061c9811d0fSWei Yongjun if (IS_ERR(vaddr)) { 10628223286dSJordan Crouse msm_gem_put_iova(obj, aspace); 10638223286dSJordan Crouse drm_gem_object_unreference(obj); 1064c9811d0fSWei Yongjun return ERR_CAST(vaddr); 10658223286dSJordan Crouse } 10668223286dSJordan Crouse 10678223286dSJordan Crouse if (bo) 10688223286dSJordan Crouse *bo = obj; 10698223286dSJordan Crouse 10708223286dSJordan Crouse return vaddr; 10718223286dSJordan Crouse } 10728223286dSJordan Crouse 10738223286dSJordan Crouse void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, 10748223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10758223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 10768223286dSJordan Crouse { 10778223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); 10788223286dSJordan Crouse } 10798223286dSJordan Crouse 10808223286dSJordan Crouse void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, 10818223286dSJordan Crouse uint32_t flags, struct msm_gem_address_space *aspace, 10828223286dSJordan Crouse struct drm_gem_object **bo, uint64_t *iova) 10838223286dSJordan Crouse { 10848223286dSJordan Crouse return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); 10858223286dSJordan Crouse } 1086