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> 21c8afe684SRob Clark 22c8afe684SRob Clark #include "msm_drv.h" 23c8afe684SRob Clark #include "msm_gem.h" 247198e6b0SRob Clark #include "msm_gpu.h" 25871d812aSRob Clark #include "msm_mmu.h" 26c8afe684SRob Clark 27871d812aSRob Clark static dma_addr_t physaddr(struct drm_gem_object *obj) 28871d812aSRob Clark { 29871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 30871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 31871d812aSRob Clark return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + 32871d812aSRob Clark priv->vram.paddr; 33871d812aSRob Clark } 34871d812aSRob Clark 35871d812aSRob Clark /* allocate pages from VRAM carveout, used when no IOMMU: */ 36871d812aSRob Clark static struct page **get_pages_vram(struct drm_gem_object *obj, 37871d812aSRob Clark int npages) 38871d812aSRob Clark { 39871d812aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 40871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 41871d812aSRob Clark dma_addr_t paddr; 42871d812aSRob Clark struct page **p; 43871d812aSRob Clark int ret, i; 44871d812aSRob Clark 45871d812aSRob Clark p = drm_malloc_ab(npages, sizeof(struct page *)); 46871d812aSRob Clark if (!p) 47871d812aSRob Clark return ERR_PTR(-ENOMEM); 48871d812aSRob Clark 49871d812aSRob Clark ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, 50871d812aSRob Clark npages, 0, DRM_MM_SEARCH_DEFAULT); 51871d812aSRob Clark if (ret) { 52871d812aSRob Clark drm_free_large(p); 53871d812aSRob Clark return ERR_PTR(ret); 54871d812aSRob Clark } 55871d812aSRob Clark 56871d812aSRob Clark paddr = physaddr(obj); 57871d812aSRob Clark for (i = 0; i < npages; i++) { 58871d812aSRob Clark p[i] = phys_to_page(paddr); 59871d812aSRob Clark paddr += PAGE_SIZE; 60871d812aSRob Clark } 61871d812aSRob Clark 62871d812aSRob Clark return p; 63871d812aSRob Clark } 64c8afe684SRob Clark 65c8afe684SRob Clark /* called with dev->struct_mutex held */ 66c8afe684SRob Clark static struct page **get_pages(struct drm_gem_object *obj) 67c8afe684SRob Clark { 68c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 69c8afe684SRob Clark 70c8afe684SRob Clark if (!msm_obj->pages) { 71c8afe684SRob Clark struct drm_device *dev = obj->dev; 72871d812aSRob Clark struct page **p; 73c8afe684SRob Clark int npages = obj->size >> PAGE_SHIFT; 74c8afe684SRob Clark 75871d812aSRob Clark if (iommu_present(&platform_bus_type)) 760cdbe8acSDavid Herrmann p = drm_gem_get_pages(obj); 77871d812aSRob Clark else 78871d812aSRob Clark p = get_pages_vram(obj, npages); 79871d812aSRob Clark 80c8afe684SRob Clark if (IS_ERR(p)) { 81c8afe684SRob Clark dev_err(dev->dev, "could not get pages: %ld\n", 82c8afe684SRob Clark PTR_ERR(p)); 83c8afe684SRob Clark return p; 84c8afe684SRob Clark } 85c8afe684SRob Clark 86c8afe684SRob Clark msm_obj->sgt = drm_prime_pages_to_sg(p, npages); 871f70e079SWei Yongjun if (IS_ERR(msm_obj->sgt)) { 88c8afe684SRob Clark dev_err(dev->dev, "failed to allocate sgt\n"); 891f70e079SWei Yongjun return ERR_CAST(msm_obj->sgt); 90c8afe684SRob Clark } 91c8afe684SRob Clark 92c8afe684SRob Clark msm_obj->pages = p; 93c8afe684SRob Clark 94c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 95c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 96c8afe684SRob Clark */ 97c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 98c8afe684SRob Clark dma_map_sg(dev->dev, msm_obj->sgt->sgl, 99c8afe684SRob Clark msm_obj->sgt->nents, DMA_BIDIRECTIONAL); 100c8afe684SRob Clark } 101c8afe684SRob Clark 102c8afe684SRob Clark return msm_obj->pages; 103c8afe684SRob Clark } 104c8afe684SRob Clark 105c8afe684SRob Clark static void put_pages(struct drm_gem_object *obj) 106c8afe684SRob Clark { 107c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 108c8afe684SRob Clark 109c8afe684SRob Clark if (msm_obj->pages) { 110c8afe684SRob Clark /* For non-cached buffers, ensure the new pages are clean 111c8afe684SRob Clark * because display controller, GPU, etc. are not coherent: 112c8afe684SRob Clark */ 113c8afe684SRob Clark if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) 114c8afe684SRob Clark dma_unmap_sg(obj->dev->dev, msm_obj->sgt->sgl, 115c8afe684SRob Clark msm_obj->sgt->nents, DMA_BIDIRECTIONAL); 116c8afe684SRob Clark sg_free_table(msm_obj->sgt); 117c8afe684SRob Clark kfree(msm_obj->sgt); 118c8afe684SRob Clark 119871d812aSRob Clark if (iommu_present(&platform_bus_type)) 120c8afe684SRob Clark drm_gem_put_pages(obj, msm_obj->pages, true, false); 1211ffa2425SMicah Richert else { 122871d812aSRob Clark drm_mm_remove_node(msm_obj->vram_node); 1231ffa2425SMicah Richert drm_free_large(msm_obj->pages); 1241ffa2425SMicah Richert } 125871d812aSRob Clark 126c8afe684SRob Clark msm_obj->pages = NULL; 127c8afe684SRob Clark } 128c8afe684SRob Clark } 129c8afe684SRob Clark 13005b84911SRob Clark struct page **msm_gem_get_pages(struct drm_gem_object *obj) 13105b84911SRob Clark { 13205b84911SRob Clark struct drm_device *dev = obj->dev; 13305b84911SRob Clark struct page **p; 13405b84911SRob Clark mutex_lock(&dev->struct_mutex); 13505b84911SRob Clark p = get_pages(obj); 13605b84911SRob Clark mutex_unlock(&dev->struct_mutex); 13705b84911SRob Clark return p; 13805b84911SRob Clark } 13905b84911SRob Clark 14005b84911SRob Clark void msm_gem_put_pages(struct drm_gem_object *obj) 14105b84911SRob Clark { 14205b84911SRob Clark /* when we start tracking the pin count, then do something here */ 14305b84911SRob Clark } 14405b84911SRob Clark 145c8afe684SRob Clark int msm_gem_mmap_obj(struct drm_gem_object *obj, 146c8afe684SRob Clark struct vm_area_struct *vma) 147c8afe684SRob Clark { 148c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 149c8afe684SRob Clark 150c8afe684SRob Clark vma->vm_flags &= ~VM_PFNMAP; 151c8afe684SRob Clark vma->vm_flags |= VM_MIXEDMAP; 152c8afe684SRob Clark 153c8afe684SRob Clark if (msm_obj->flags & MSM_BO_WC) { 154c8afe684SRob Clark vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 155c8afe684SRob Clark } else if (msm_obj->flags & MSM_BO_UNCACHED) { 156c8afe684SRob Clark vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); 157c8afe684SRob Clark } else { 158c8afe684SRob Clark /* 159c8afe684SRob Clark * Shunt off cached objs to shmem file so they have their own 160c8afe684SRob Clark * address_space (so unmap_mapping_range does what we want, 161c8afe684SRob Clark * in particular in the case of mmap'd dmabufs) 162c8afe684SRob Clark */ 163c8afe684SRob Clark fput(vma->vm_file); 164c8afe684SRob Clark get_file(obj->filp); 165c8afe684SRob Clark vma->vm_pgoff = 0; 166c8afe684SRob Clark vma->vm_file = obj->filp; 167c8afe684SRob Clark 168c8afe684SRob Clark vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); 169c8afe684SRob Clark } 170c8afe684SRob Clark 171c8afe684SRob Clark return 0; 172c8afe684SRob Clark } 173c8afe684SRob Clark 174c8afe684SRob Clark int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 175c8afe684SRob Clark { 176c8afe684SRob Clark int ret; 177c8afe684SRob Clark 178c8afe684SRob Clark ret = drm_gem_mmap(filp, vma); 179c8afe684SRob Clark if (ret) { 180c8afe684SRob Clark DBG("mmap failed: %d", ret); 181c8afe684SRob Clark return ret; 182c8afe684SRob Clark } 183c8afe684SRob Clark 184c8afe684SRob Clark return msm_gem_mmap_obj(vma->vm_private_data, vma); 185c8afe684SRob Clark } 186c8afe684SRob Clark 187c8afe684SRob Clark int msm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 188c8afe684SRob Clark { 189c8afe684SRob Clark struct drm_gem_object *obj = vma->vm_private_data; 190c8afe684SRob Clark struct drm_device *dev = obj->dev; 191c8afe684SRob Clark struct page **pages; 192c8afe684SRob Clark unsigned long pfn; 193c8afe684SRob Clark pgoff_t pgoff; 194c8afe684SRob Clark int ret; 195c8afe684SRob Clark 196c8afe684SRob Clark /* Make sure we don't parallel update on a fault, nor move or remove 197c8afe684SRob Clark * something from beneath our feet 198c8afe684SRob Clark */ 199c8afe684SRob Clark ret = mutex_lock_interruptible(&dev->struct_mutex); 200c8afe684SRob Clark if (ret) 201c8afe684SRob Clark goto out; 202c8afe684SRob Clark 203c8afe684SRob Clark /* make sure we have pages attached now */ 204c8afe684SRob Clark pages = get_pages(obj); 205c8afe684SRob Clark if (IS_ERR(pages)) { 206c8afe684SRob Clark ret = PTR_ERR(pages); 207c8afe684SRob Clark goto out_unlock; 208c8afe684SRob Clark } 209c8afe684SRob Clark 210c8afe684SRob Clark /* We don't use vmf->pgoff since that has the fake offset: */ 211c8afe684SRob Clark pgoff = ((unsigned long)vmf->virtual_address - 212c8afe684SRob Clark vma->vm_start) >> PAGE_SHIFT; 213c8afe684SRob Clark 214871d812aSRob Clark pfn = page_to_pfn(pages[pgoff]); 215c8afe684SRob Clark 216c8afe684SRob Clark VERB("Inserting %p pfn %lx, pa %lx", vmf->virtual_address, 217c8afe684SRob Clark pfn, pfn << PAGE_SHIFT); 218c8afe684SRob Clark 219c8afe684SRob Clark ret = vm_insert_mixed(vma, (unsigned long)vmf->virtual_address, pfn); 220c8afe684SRob Clark 221c8afe684SRob Clark out_unlock: 222c8afe684SRob Clark mutex_unlock(&dev->struct_mutex); 223c8afe684SRob Clark out: 224c8afe684SRob Clark switch (ret) { 225c8afe684SRob Clark case -EAGAIN: 226c8afe684SRob Clark case 0: 227c8afe684SRob Clark case -ERESTARTSYS: 228c8afe684SRob Clark case -EINTR: 229505886d5SRob Clark case -EBUSY: 230505886d5SRob Clark /* 231505886d5SRob Clark * EBUSY is ok: this just means that another thread 232505886d5SRob Clark * already did the job. 233505886d5SRob Clark */ 234c8afe684SRob Clark return VM_FAULT_NOPAGE; 235c8afe684SRob Clark case -ENOMEM: 236c8afe684SRob Clark return VM_FAULT_OOM; 237c8afe684SRob Clark default: 238c8afe684SRob Clark return VM_FAULT_SIGBUS; 239c8afe684SRob Clark } 240c8afe684SRob Clark } 241c8afe684SRob Clark 242c8afe684SRob Clark /** get mmap offset */ 243c8afe684SRob Clark static uint64_t mmap_offset(struct drm_gem_object *obj) 244c8afe684SRob Clark { 245c8afe684SRob Clark struct drm_device *dev = obj->dev; 246c8afe684SRob Clark int ret; 247c8afe684SRob Clark 248c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 249c8afe684SRob Clark 250c8afe684SRob Clark /* Make it mmapable */ 251c8afe684SRob Clark ret = drm_gem_create_mmap_offset(obj); 252c8afe684SRob Clark 253c8afe684SRob Clark if (ret) { 254c8afe684SRob Clark dev_err(dev->dev, "could not allocate mmap offset\n"); 255c8afe684SRob Clark return 0; 256c8afe684SRob Clark } 257c8afe684SRob Clark 258c8afe684SRob Clark return drm_vma_node_offset_addr(&obj->vma_node); 259c8afe684SRob Clark } 260c8afe684SRob Clark 261c8afe684SRob Clark uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) 262c8afe684SRob Clark { 263c8afe684SRob Clark uint64_t offset; 264c8afe684SRob Clark mutex_lock(&obj->dev->struct_mutex); 265c8afe684SRob Clark offset = mmap_offset(obj); 266c8afe684SRob Clark mutex_unlock(&obj->dev->struct_mutex); 267c8afe684SRob Clark return offset; 268c8afe684SRob Clark } 269c8afe684SRob Clark 270c8afe684SRob Clark /* should be called under struct_mutex.. although it can be called 271c8afe684SRob Clark * from atomic context without struct_mutex to acquire an extra 272c8afe684SRob Clark * iova ref if you know one is already held. 273c8afe684SRob Clark * 274c8afe684SRob Clark * That means when I do eventually need to add support for unpinning 275c8afe684SRob Clark * the refcnt counter needs to be atomic_t. 276c8afe684SRob Clark */ 277c8afe684SRob Clark int msm_gem_get_iova_locked(struct drm_gem_object *obj, int id, 278c8afe684SRob Clark uint32_t *iova) 279c8afe684SRob Clark { 280c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 281c8afe684SRob Clark int ret = 0; 282c8afe684SRob Clark 283c8afe684SRob Clark if (!msm_obj->domain[id].iova) { 284c8afe684SRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 285871d812aSRob Clark struct page **pages = get_pages(obj); 286871d812aSRob Clark 287c8afe684SRob Clark if (IS_ERR(pages)) 288c8afe684SRob Clark return PTR_ERR(pages); 289871d812aSRob Clark 290871d812aSRob Clark if (iommu_present(&platform_bus_type)) { 2911c4997feSRob Clark struct msm_mmu *mmu = priv->mmus[id]; 2921c4997feSRob Clark uint32_t offset; 2931c4997feSRob Clark 2941c4997feSRob Clark if (WARN_ON(!mmu)) 2951c4997feSRob Clark return -EINVAL; 2961c4997feSRob Clark 2971c4997feSRob Clark offset = (uint32_t)mmap_offset(obj); 298871d812aSRob Clark ret = mmu->funcs->map(mmu, offset, msm_obj->sgt, 299c8afe684SRob Clark obj->size, IOMMU_READ | IOMMU_WRITE); 300c8afe684SRob Clark msm_obj->domain[id].iova = offset; 301871d812aSRob Clark } else { 302871d812aSRob Clark msm_obj->domain[id].iova = physaddr(obj); 303871d812aSRob Clark } 304c8afe684SRob Clark } 305c8afe684SRob Clark 306c8afe684SRob Clark if (!ret) 307c8afe684SRob Clark *iova = msm_obj->domain[id].iova; 308c8afe684SRob Clark 309c8afe684SRob Clark return ret; 310c8afe684SRob Clark } 311c8afe684SRob Clark 3122638d90aSRob Clark /* get iova, taking a reference. Should have a matching put */ 313c8afe684SRob Clark int msm_gem_get_iova(struct drm_gem_object *obj, int id, uint32_t *iova) 314c8afe684SRob Clark { 315edd4fc63SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 316c8afe684SRob Clark int ret; 317edd4fc63SRob Clark 318edd4fc63SRob Clark /* this is safe right now because we don't unmap until the 319edd4fc63SRob Clark * bo is deleted: 320edd4fc63SRob Clark */ 321edd4fc63SRob Clark if (msm_obj->domain[id].iova) { 322edd4fc63SRob Clark *iova = msm_obj->domain[id].iova; 323edd4fc63SRob Clark return 0; 324edd4fc63SRob Clark } 325edd4fc63SRob Clark 326c8afe684SRob Clark mutex_lock(&obj->dev->struct_mutex); 327c8afe684SRob Clark ret = msm_gem_get_iova_locked(obj, id, iova); 328c8afe684SRob Clark mutex_unlock(&obj->dev->struct_mutex); 329c8afe684SRob Clark return ret; 330c8afe684SRob Clark } 331c8afe684SRob Clark 3322638d90aSRob Clark /* get iova without taking a reference, used in places where you have 3332638d90aSRob Clark * already done a 'msm_gem_get_iova()'. 3342638d90aSRob Clark */ 3352638d90aSRob Clark uint32_t msm_gem_iova(struct drm_gem_object *obj, int id) 3362638d90aSRob Clark { 3372638d90aSRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 3382638d90aSRob Clark WARN_ON(!msm_obj->domain[id].iova); 3392638d90aSRob Clark return msm_obj->domain[id].iova; 3402638d90aSRob Clark } 3412638d90aSRob Clark 342c8afe684SRob Clark void msm_gem_put_iova(struct drm_gem_object *obj, int id) 343c8afe684SRob Clark { 344c8afe684SRob Clark // XXX TODO .. 345c8afe684SRob Clark // NOTE: probably don't need a _locked() version.. we wouldn't 346c8afe684SRob Clark // normally unmap here, but instead just mark that it could be 347c8afe684SRob Clark // unmapped (if the iova refcnt drops to zero), but then later 348c8afe684SRob Clark // if another _get_iova_locked() fails we can start unmapping 349c8afe684SRob Clark // things that are no longer needed.. 350c8afe684SRob Clark } 351c8afe684SRob Clark 352c8afe684SRob Clark int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, 353c8afe684SRob Clark struct drm_mode_create_dumb *args) 354c8afe684SRob Clark { 355c8afe684SRob Clark args->pitch = align_pitch(args->width, args->bpp); 356c8afe684SRob Clark args->size = PAGE_ALIGN(args->pitch * args->height); 357c8afe684SRob Clark return msm_gem_new_handle(dev, file, args->size, 358c8afe684SRob Clark MSM_BO_SCANOUT | MSM_BO_WC, &args->handle); 359c8afe684SRob Clark } 360c8afe684SRob Clark 361c8afe684SRob Clark int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, 362c8afe684SRob Clark uint32_t handle, uint64_t *offset) 363c8afe684SRob Clark { 364c8afe684SRob Clark struct drm_gem_object *obj; 365c8afe684SRob Clark int ret = 0; 366c8afe684SRob Clark 367c8afe684SRob Clark /* GEM does all our handle to object mapping */ 368c8afe684SRob Clark obj = drm_gem_object_lookup(dev, file, handle); 369c8afe684SRob Clark if (obj == NULL) { 370c8afe684SRob Clark ret = -ENOENT; 371c8afe684SRob Clark goto fail; 372c8afe684SRob Clark } 373c8afe684SRob Clark 374c8afe684SRob Clark *offset = msm_gem_mmap_offset(obj); 375c8afe684SRob Clark 376c8afe684SRob Clark drm_gem_object_unreference_unlocked(obj); 377c8afe684SRob Clark 378c8afe684SRob Clark fail: 379c8afe684SRob Clark return ret; 380c8afe684SRob Clark } 381c8afe684SRob Clark 382c8afe684SRob Clark void *msm_gem_vaddr_locked(struct drm_gem_object *obj) 383c8afe684SRob Clark { 384c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 385c8afe684SRob Clark WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); 386c8afe684SRob Clark if (!msm_obj->vaddr) { 387c8afe684SRob Clark struct page **pages = get_pages(obj); 388c8afe684SRob Clark if (IS_ERR(pages)) 389c8afe684SRob Clark return ERR_CAST(pages); 390c8afe684SRob Clark msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, 391c8afe684SRob Clark VM_MAP, pgprot_writecombine(PAGE_KERNEL)); 392c8afe684SRob Clark } 393c8afe684SRob Clark return msm_obj->vaddr; 394c8afe684SRob Clark } 395c8afe684SRob Clark 396c8afe684SRob Clark void *msm_gem_vaddr(struct drm_gem_object *obj) 397c8afe684SRob Clark { 398c8afe684SRob Clark void *ret; 399c8afe684SRob Clark mutex_lock(&obj->dev->struct_mutex); 400c8afe684SRob Clark ret = msm_gem_vaddr_locked(obj); 401c8afe684SRob Clark mutex_unlock(&obj->dev->struct_mutex); 402c8afe684SRob Clark return ret; 403c8afe684SRob Clark } 404c8afe684SRob Clark 405edd4fc63SRob Clark /* setup callback for when bo is no longer busy.. 406edd4fc63SRob Clark * TODO probably want to differentiate read vs write.. 407edd4fc63SRob Clark */ 408edd4fc63SRob Clark int msm_gem_queue_inactive_cb(struct drm_gem_object *obj, 409edd4fc63SRob Clark struct msm_fence_cb *cb) 410c8afe684SRob Clark { 4117198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 41269193e50SRob Clark uint32_t fence = msm_gem_fence(msm_obj, 41369193e50SRob Clark MSM_PREP_READ | MSM_PREP_WRITE); 41469193e50SRob Clark return msm_queue_fence_cb(obj->dev, cb, fence); 4157198e6b0SRob Clark } 4167198e6b0SRob Clark 4177198e6b0SRob Clark void msm_gem_move_to_active(struct drm_gem_object *obj, 418bf6811f3SRob Clark struct msm_gpu *gpu, bool write, uint32_t fence) 4197198e6b0SRob Clark { 4207198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4217198e6b0SRob Clark msm_obj->gpu = gpu; 422bf6811f3SRob Clark if (write) 423bf6811f3SRob Clark msm_obj->write_fence = fence; 424bf6811f3SRob Clark else 425bf6811f3SRob Clark msm_obj->read_fence = fence; 4267198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 4277198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &gpu->active_list); 4287198e6b0SRob Clark } 4297198e6b0SRob Clark 4307198e6b0SRob Clark void msm_gem_move_to_inactive(struct drm_gem_object *obj) 4317198e6b0SRob Clark { 4327198e6b0SRob Clark struct drm_device *dev = obj->dev; 4337198e6b0SRob Clark struct msm_drm_private *priv = dev->dev_private; 4347198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4357198e6b0SRob Clark 4367198e6b0SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 4377198e6b0SRob Clark 4387198e6b0SRob Clark msm_obj->gpu = NULL; 439bf6811f3SRob Clark msm_obj->read_fence = 0; 440bf6811f3SRob Clark msm_obj->write_fence = 0; 4417198e6b0SRob Clark list_del_init(&msm_obj->mm_list); 4427198e6b0SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 4437198e6b0SRob Clark } 4447198e6b0SRob Clark 4457198e6b0SRob Clark int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, 4467198e6b0SRob Clark struct timespec *timeout) 4477198e6b0SRob Clark { 4487198e6b0SRob Clark struct drm_device *dev = obj->dev; 4497198e6b0SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 4507198e6b0SRob Clark int ret = 0; 4517198e6b0SRob Clark 452f816f272SRob Clark if (is_active(msm_obj)) { 45369193e50SRob Clark uint32_t fence = msm_gem_fence(msm_obj, op); 454f816f272SRob Clark 455f816f272SRob Clark if (op & MSM_PREP_NOSYNC) 456f816f272SRob Clark timeout = NULL; 457f816f272SRob Clark 458bf6811f3SRob Clark ret = msm_wait_fence_interruptable(dev, fence, timeout); 459bf6811f3SRob Clark } 4607198e6b0SRob Clark 4617198e6b0SRob Clark /* TODO cache maintenance */ 4627198e6b0SRob Clark 4637198e6b0SRob Clark return ret; 4647198e6b0SRob Clark } 4657198e6b0SRob Clark 4667198e6b0SRob Clark int msm_gem_cpu_fini(struct drm_gem_object *obj) 4677198e6b0SRob Clark { 4687198e6b0SRob Clark /* TODO cache maintenance */ 469c8afe684SRob Clark return 0; 470c8afe684SRob Clark } 471c8afe684SRob Clark 472c8afe684SRob Clark #ifdef CONFIG_DEBUG_FS 473c8afe684SRob Clark void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) 474c8afe684SRob Clark { 475c8afe684SRob Clark struct drm_device *dev = obj->dev; 476c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 477c8afe684SRob Clark uint64_t off = drm_vma_node_start(&obj->vma_node); 478c8afe684SRob Clark 479c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 480bf6811f3SRob Clark seq_printf(m, "%08x: %c(r=%u,w=%u) %2d (%2d) %08llx %p %d\n", 4817198e6b0SRob Clark msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', 482bf6811f3SRob Clark msm_obj->read_fence, msm_obj->write_fence, 483bf6811f3SRob Clark obj->name, obj->refcount.refcount.counter, 484c8afe684SRob Clark off, msm_obj->vaddr, obj->size); 485c8afe684SRob Clark } 486c8afe684SRob Clark 487c8afe684SRob Clark void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) 488c8afe684SRob Clark { 489c8afe684SRob Clark struct msm_gem_object *msm_obj; 490c8afe684SRob Clark int count = 0; 491c8afe684SRob Clark size_t size = 0; 492c8afe684SRob Clark 493c8afe684SRob Clark list_for_each_entry(msm_obj, list, mm_list) { 494c8afe684SRob Clark struct drm_gem_object *obj = &msm_obj->base; 495c8afe684SRob Clark seq_printf(m, " "); 496c8afe684SRob Clark msm_gem_describe(obj, m); 497c8afe684SRob Clark count++; 498c8afe684SRob Clark size += obj->size; 499c8afe684SRob Clark } 500c8afe684SRob Clark 501c8afe684SRob Clark seq_printf(m, "Total %d objects, %zu bytes\n", count, size); 502c8afe684SRob Clark } 503c8afe684SRob Clark #endif 504c8afe684SRob Clark 505c8afe684SRob Clark void msm_gem_free_object(struct drm_gem_object *obj) 506c8afe684SRob Clark { 507c8afe684SRob Clark struct drm_device *dev = obj->dev; 508871d812aSRob Clark struct msm_drm_private *priv = obj->dev->dev_private; 509c8afe684SRob Clark struct msm_gem_object *msm_obj = to_msm_bo(obj); 510c8afe684SRob Clark int id; 511c8afe684SRob Clark 512c8afe684SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 513c8afe684SRob Clark 5147198e6b0SRob Clark /* object should not be on active list: */ 5157198e6b0SRob Clark WARN_ON(is_active(msm_obj)); 5167198e6b0SRob Clark 517c8afe684SRob Clark list_del(&msm_obj->mm_list); 518c8afe684SRob Clark 519c8afe684SRob Clark for (id = 0; id < ARRAY_SIZE(msm_obj->domain); id++) { 520871d812aSRob Clark struct msm_mmu *mmu = priv->mmus[id]; 521871d812aSRob Clark if (mmu && msm_obj->domain[id].iova) { 522c8afe684SRob Clark uint32_t offset = (uint32_t)mmap_offset(obj); 523871d812aSRob Clark mmu->funcs->unmap(mmu, offset, msm_obj->sgt, obj->size); 524c8afe684SRob Clark } 525c8afe684SRob Clark } 526c8afe684SRob Clark 527c8afe684SRob Clark drm_gem_free_mmap_offset(obj); 528c8afe684SRob Clark 52905b84911SRob Clark if (obj->import_attach) { 53005b84911SRob Clark if (msm_obj->vaddr) 53105b84911SRob Clark dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); 53205b84911SRob Clark 53305b84911SRob Clark /* Don't drop the pages for imported dmabuf, as they are not 53405b84911SRob Clark * ours, just free the array we allocated: 53505b84911SRob Clark */ 53605b84911SRob Clark if (msm_obj->pages) 53705b84911SRob Clark drm_free_large(msm_obj->pages); 53805b84911SRob Clark 53905b84911SRob Clark } else { 540c8afe684SRob Clark if (msm_obj->vaddr) 541c8afe684SRob Clark vunmap(msm_obj->vaddr); 542c8afe684SRob Clark put_pages(obj); 54305b84911SRob Clark } 544c8afe684SRob Clark 5457198e6b0SRob Clark if (msm_obj->resv == &msm_obj->_resv) 5467198e6b0SRob Clark reservation_object_fini(msm_obj->resv); 5477198e6b0SRob Clark 548c8afe684SRob Clark drm_gem_object_release(obj); 549c8afe684SRob Clark 550c8afe684SRob Clark kfree(msm_obj); 551c8afe684SRob Clark } 552c8afe684SRob Clark 553c8afe684SRob Clark /* convenience method to construct a GEM buffer object, and userspace handle */ 554c8afe684SRob Clark int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, 555c8afe684SRob Clark uint32_t size, uint32_t flags, uint32_t *handle) 556c8afe684SRob Clark { 557c8afe684SRob Clark struct drm_gem_object *obj; 558c8afe684SRob Clark int ret; 559c8afe684SRob Clark 560c8afe684SRob Clark ret = mutex_lock_interruptible(&dev->struct_mutex); 561c8afe684SRob Clark if (ret) 562c8afe684SRob Clark return ret; 563c8afe684SRob Clark 564c8afe684SRob Clark obj = msm_gem_new(dev, size, flags); 565c8afe684SRob Clark 566c8afe684SRob Clark mutex_unlock(&dev->struct_mutex); 567c8afe684SRob Clark 568c8afe684SRob Clark if (IS_ERR(obj)) 569c8afe684SRob Clark return PTR_ERR(obj); 570c8afe684SRob Clark 571c8afe684SRob Clark ret = drm_gem_handle_create(file, obj, handle); 572c8afe684SRob Clark 573c8afe684SRob Clark /* drop reference from allocate - handle holds it now */ 574c8afe684SRob Clark drm_gem_object_unreference_unlocked(obj); 575c8afe684SRob Clark 576c8afe684SRob Clark return ret; 577c8afe684SRob Clark } 578c8afe684SRob Clark 57905b84911SRob Clark static int msm_gem_new_impl(struct drm_device *dev, 58005b84911SRob Clark uint32_t size, uint32_t flags, 58105b84911SRob Clark struct drm_gem_object **obj) 582c8afe684SRob Clark { 583c8afe684SRob Clark struct msm_drm_private *priv = dev->dev_private; 584c8afe684SRob Clark struct msm_gem_object *msm_obj; 585871d812aSRob Clark unsigned sz; 586c8afe684SRob Clark 587c8afe684SRob Clark switch (flags & MSM_BO_CACHE_MASK) { 588c8afe684SRob Clark case MSM_BO_UNCACHED: 589c8afe684SRob Clark case MSM_BO_CACHED: 590c8afe684SRob Clark case MSM_BO_WC: 591c8afe684SRob Clark break; 592c8afe684SRob Clark default: 593c8afe684SRob Clark dev_err(dev->dev, "invalid cache flag: %x\n", 594c8afe684SRob Clark (flags & MSM_BO_CACHE_MASK)); 59505b84911SRob Clark return -EINVAL; 596c8afe684SRob Clark } 597c8afe684SRob Clark 598871d812aSRob Clark sz = sizeof(*msm_obj); 599871d812aSRob Clark if (!iommu_present(&platform_bus_type)) 600871d812aSRob Clark sz += sizeof(struct drm_mm_node); 601871d812aSRob Clark 602871d812aSRob Clark msm_obj = kzalloc(sz, GFP_KERNEL); 60305b84911SRob Clark if (!msm_obj) 60405b84911SRob Clark return -ENOMEM; 605c8afe684SRob Clark 606871d812aSRob Clark if (!iommu_present(&platform_bus_type)) 607871d812aSRob Clark msm_obj->vram_node = (void *)&msm_obj[1]; 608871d812aSRob Clark 609c8afe684SRob Clark msm_obj->flags = flags; 610c8afe684SRob Clark 6117198e6b0SRob Clark msm_obj->resv = &msm_obj->_resv; 6127198e6b0SRob Clark reservation_object_init(msm_obj->resv); 613c8afe684SRob Clark 6147198e6b0SRob Clark INIT_LIST_HEAD(&msm_obj->submit_entry); 615c8afe684SRob Clark list_add_tail(&msm_obj->mm_list, &priv->inactive_list); 616c8afe684SRob Clark 61705b84911SRob Clark *obj = &msm_obj->base; 61805b84911SRob Clark 61905b84911SRob Clark return 0; 62005b84911SRob Clark } 62105b84911SRob Clark 62205b84911SRob Clark struct drm_gem_object *msm_gem_new(struct drm_device *dev, 62305b84911SRob Clark uint32_t size, uint32_t flags) 62405b84911SRob Clark { 625871d812aSRob Clark struct drm_gem_object *obj = NULL; 62605b84911SRob Clark int ret; 62705b84911SRob Clark 62805b84911SRob Clark WARN_ON(!mutex_is_locked(&dev->struct_mutex)); 62905b84911SRob Clark 63005b84911SRob Clark size = PAGE_ALIGN(size); 63105b84911SRob Clark 63205b84911SRob Clark ret = msm_gem_new_impl(dev, size, flags, &obj); 63305b84911SRob Clark if (ret) 63405b84911SRob Clark goto fail; 63505b84911SRob Clark 636871d812aSRob Clark if (iommu_present(&platform_bus_type)) { 63705b84911SRob Clark ret = drm_gem_object_init(dev, obj, size); 63805b84911SRob Clark if (ret) 63905b84911SRob Clark goto fail; 640871d812aSRob Clark } else { 641871d812aSRob Clark drm_gem_private_object_init(dev, obj, size); 642871d812aSRob Clark } 64305b84911SRob Clark 64405b84911SRob Clark return obj; 64505b84911SRob Clark 64605b84911SRob Clark fail: 64705b84911SRob Clark if (obj) 6489999f105SRob Clark drm_gem_object_unreference(obj); 64905b84911SRob Clark 65005b84911SRob Clark return ERR_PTR(ret); 65105b84911SRob Clark } 65205b84911SRob Clark 65305b84911SRob Clark struct drm_gem_object *msm_gem_import(struct drm_device *dev, 65405b84911SRob Clark uint32_t size, struct sg_table *sgt) 65505b84911SRob Clark { 65605b84911SRob Clark struct msm_gem_object *msm_obj; 65705b84911SRob Clark struct drm_gem_object *obj; 65805b84911SRob Clark int ret, npages; 65905b84911SRob Clark 660871d812aSRob Clark /* if we don't have IOMMU, don't bother pretending we can import: */ 661871d812aSRob Clark if (!iommu_present(&platform_bus_type)) { 662871d812aSRob Clark dev_err(dev->dev, "cannot import without IOMMU\n"); 663871d812aSRob Clark return ERR_PTR(-EINVAL); 664871d812aSRob Clark } 665871d812aSRob Clark 66605b84911SRob Clark size = PAGE_ALIGN(size); 66705b84911SRob Clark 66805b84911SRob Clark ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); 66905b84911SRob Clark if (ret) 67005b84911SRob Clark goto fail; 67105b84911SRob Clark 67205b84911SRob Clark drm_gem_private_object_init(dev, obj, size); 67305b84911SRob Clark 67405b84911SRob Clark npages = size / PAGE_SIZE; 67505b84911SRob Clark 67605b84911SRob Clark msm_obj = to_msm_bo(obj); 67705b84911SRob Clark msm_obj->sgt = sgt; 67805b84911SRob Clark msm_obj->pages = drm_malloc_ab(npages, sizeof(struct page *)); 67905b84911SRob Clark if (!msm_obj->pages) { 68005b84911SRob Clark ret = -ENOMEM; 68105b84911SRob Clark goto fail; 68205b84911SRob Clark } 68305b84911SRob Clark 68405b84911SRob Clark ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); 68505b84911SRob Clark if (ret) 68605b84911SRob Clark goto fail; 68705b84911SRob Clark 688c8afe684SRob Clark return obj; 689c8afe684SRob Clark 690c8afe684SRob Clark fail: 691c8afe684SRob Clark if (obj) 692c8afe684SRob Clark drm_gem_object_unreference_unlocked(obj); 693c8afe684SRob Clark 694c8afe684SRob Clark return ERR_PTR(ret); 695c8afe684SRob Clark } 696