![Dave Jiang](/assets/img/avatar_default.png)
->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to take a vma and vmf parameter when the vma already resides in vmf. Remove the vma parameter to simplify things. [arnd@arndb.de: fix ARM build] Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@suse.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
495 lines
13 KiB
C
495 lines
13 KiB
C
/*
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* Copyright 2013 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie
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* Alon Levy
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*/
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#include <ttm/ttm_bo_api.h>
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#include <ttm/ttm_bo_driver.h>
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#include <ttm/ttm_placement.h>
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#include <ttm/ttm_page_alloc.h>
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#include <ttm/ttm_module.h>
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#include <drm/drmP.h>
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#include <drm/drm.h>
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#include <drm/qxl_drm.h>
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#include "qxl_drv.h"
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#include "qxl_object.h"
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#include <linux/delay.h>
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static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
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{
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struct qxl_mman *mman;
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struct qxl_device *qdev;
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mman = container_of(bdev, struct qxl_mman, bdev);
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qdev = container_of(mman, struct qxl_device, mman);
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return qdev;
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}
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static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
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{
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return ttm_mem_global_init(ref->object);
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}
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static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
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{
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ttm_mem_global_release(ref->object);
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}
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static int qxl_ttm_global_init(struct qxl_device *qdev)
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{
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struct drm_global_reference *global_ref;
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int r;
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qdev->mman.mem_global_referenced = false;
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global_ref = &qdev->mman.mem_global_ref;
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global_ref->global_type = DRM_GLOBAL_TTM_MEM;
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global_ref->size = sizeof(struct ttm_mem_global);
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global_ref->init = &qxl_ttm_mem_global_init;
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global_ref->release = &qxl_ttm_mem_global_release;
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r = drm_global_item_ref(global_ref);
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if (r != 0) {
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DRM_ERROR("Failed setting up TTM memory accounting "
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"subsystem.\n");
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return r;
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}
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qdev->mman.bo_global_ref.mem_glob =
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qdev->mman.mem_global_ref.object;
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global_ref = &qdev->mman.bo_global_ref.ref;
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global_ref->global_type = DRM_GLOBAL_TTM_BO;
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global_ref->size = sizeof(struct ttm_bo_global);
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global_ref->init = &ttm_bo_global_init;
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global_ref->release = &ttm_bo_global_release;
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r = drm_global_item_ref(global_ref);
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if (r != 0) {
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DRM_ERROR("Failed setting up TTM BO subsystem.\n");
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drm_global_item_unref(&qdev->mman.mem_global_ref);
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return r;
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}
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qdev->mman.mem_global_referenced = true;
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return 0;
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}
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static void qxl_ttm_global_fini(struct qxl_device *qdev)
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{
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if (qdev->mman.mem_global_referenced) {
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drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
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drm_global_item_unref(&qdev->mman.mem_global_ref);
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qdev->mman.mem_global_referenced = false;
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}
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}
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static struct vm_operations_struct qxl_ttm_vm_ops;
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static const struct vm_operations_struct *ttm_vm_ops;
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static int qxl_ttm_fault(struct vm_fault *vmf)
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{
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struct ttm_buffer_object *bo;
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int r;
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bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data;
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if (bo == NULL)
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return VM_FAULT_NOPAGE;
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r = ttm_vm_ops->fault(vmf);
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return r;
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}
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int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
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{
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struct drm_file *file_priv;
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struct qxl_device *qdev;
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int r;
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if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
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pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
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__func__, vma->vm_pgoff);
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return -EINVAL;
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}
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file_priv = filp->private_data;
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qdev = file_priv->minor->dev->dev_private;
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if (qdev == NULL) {
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DRM_ERROR(
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"filp->private_data->minor->dev->dev_private == NULL\n");
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return -EINVAL;
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}
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QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
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__func__, filp->private_data, vma->vm_pgoff);
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r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
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if (unlikely(r != 0))
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return r;
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if (unlikely(ttm_vm_ops == NULL)) {
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ttm_vm_ops = vma->vm_ops;
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qxl_ttm_vm_ops = *ttm_vm_ops;
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qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
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}
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vma->vm_ops = &qxl_ttm_vm_ops;
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return 0;
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}
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static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
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{
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return 0;
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}
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static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
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struct ttm_mem_type_manager *man)
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{
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switch (type) {
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case TTM_PL_SYSTEM:
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/* System memory */
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man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_MASK_CACHING;
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man->default_caching = TTM_PL_FLAG_CACHED;
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break;
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case TTM_PL_VRAM:
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case TTM_PL_PRIV:
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/* "On-card" video ram */
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man->func = &ttm_bo_manager_func;
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man->gpu_offset = 0;
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man->flags = TTM_MEMTYPE_FLAG_FIXED |
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TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_MASK_CACHING;
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man->default_caching = TTM_PL_FLAG_CACHED;
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break;
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default:
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DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
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return -EINVAL;
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}
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return 0;
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}
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static void qxl_evict_flags(struct ttm_buffer_object *bo,
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struct ttm_placement *placement)
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{
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struct qxl_bo *qbo;
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static struct ttm_place placements = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
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};
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if (!qxl_ttm_bo_is_qxl_bo(bo)) {
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placement->placement = &placements;
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placement->busy_placement = &placements;
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placement->num_placement = 1;
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placement->num_busy_placement = 1;
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return;
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}
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qbo = to_qxl_bo(bo);
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qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
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*placement = qbo->placement;
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}
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static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
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{
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struct qxl_bo *qbo = to_qxl_bo(bo);
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return drm_vma_node_verify_access(&qbo->gem_base.vma_node,
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filp->private_data);
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}
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static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
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struct ttm_mem_reg *mem)
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{
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struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
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struct qxl_device *qdev = qxl_get_qdev(bdev);
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mem->bus.addr = NULL;
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mem->bus.offset = 0;
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mem->bus.size = mem->num_pages << PAGE_SHIFT;
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mem->bus.base = 0;
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mem->bus.is_iomem = false;
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if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
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return -EINVAL;
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switch (mem->mem_type) {
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case TTM_PL_SYSTEM:
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/* system memory */
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return 0;
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case TTM_PL_VRAM:
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mem->bus.is_iomem = true;
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mem->bus.base = qdev->vram_base;
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mem->bus.offset = mem->start << PAGE_SHIFT;
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break;
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case TTM_PL_PRIV:
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mem->bus.is_iomem = true;
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mem->bus.base = qdev->surfaceram_base;
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mem->bus.offset = mem->start << PAGE_SHIFT;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
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struct ttm_mem_reg *mem)
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{
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}
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/*
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* TTM backend functions.
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*/
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struct qxl_ttm_tt {
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struct ttm_dma_tt ttm;
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struct qxl_device *qdev;
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u64 offset;
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};
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static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
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struct ttm_mem_reg *bo_mem)
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{
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struct qxl_ttm_tt *gtt = (void *)ttm;
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gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
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if (!ttm->num_pages) {
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WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
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ttm->num_pages, bo_mem, ttm);
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}
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/* Not implemented */
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return -1;
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}
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static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
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{
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/* Not implemented */
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return -1;
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}
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static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
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{
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struct qxl_ttm_tt *gtt = (void *)ttm;
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ttm_dma_tt_fini(>t->ttm);
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kfree(gtt);
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}
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static struct ttm_backend_func qxl_backend_func = {
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.bind = &qxl_ttm_backend_bind,
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.unbind = &qxl_ttm_backend_unbind,
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.destroy = &qxl_ttm_backend_destroy,
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};
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static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
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{
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int r;
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if (ttm->state != tt_unpopulated)
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return 0;
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r = ttm_pool_populate(ttm);
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if (r)
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return r;
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return 0;
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}
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static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
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{
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ttm_pool_unpopulate(ttm);
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}
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static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
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unsigned long size, uint32_t page_flags,
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struct page *dummy_read_page)
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{
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struct qxl_device *qdev;
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struct qxl_ttm_tt *gtt;
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qdev = qxl_get_qdev(bdev);
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gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
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if (gtt == NULL)
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return NULL;
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gtt->ttm.ttm.func = &qxl_backend_func;
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gtt->qdev = qdev;
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if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags,
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dummy_read_page)) {
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kfree(gtt);
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return NULL;
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}
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return >t->ttm.ttm;
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}
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static void qxl_move_null(struct ttm_buffer_object *bo,
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struct ttm_mem_reg *new_mem)
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{
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struct ttm_mem_reg *old_mem = &bo->mem;
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BUG_ON(old_mem->mm_node != NULL);
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*old_mem = *new_mem;
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new_mem->mm_node = NULL;
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}
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static int qxl_bo_move(struct ttm_buffer_object *bo,
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bool evict, bool interruptible,
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bool no_wait_gpu,
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struct ttm_mem_reg *new_mem)
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{
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struct ttm_mem_reg *old_mem = &bo->mem;
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int ret;
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ret = ttm_bo_wait(bo, interruptible, no_wait_gpu);
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if (ret)
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return ret;
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if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
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qxl_move_null(bo, new_mem);
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return 0;
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}
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return ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu,
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new_mem);
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}
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static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
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bool evict,
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struct ttm_mem_reg *new_mem)
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{
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struct qxl_bo *qbo;
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struct qxl_device *qdev;
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if (!qxl_ttm_bo_is_qxl_bo(bo))
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return;
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qbo = to_qxl_bo(bo);
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qdev = qbo->gem_base.dev->dev_private;
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if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id)
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qxl_surface_evict(qdev, qbo, new_mem ? true : false);
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}
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static struct ttm_bo_driver qxl_bo_driver = {
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.ttm_tt_create = &qxl_ttm_tt_create,
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.ttm_tt_populate = &qxl_ttm_tt_populate,
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.ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
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.invalidate_caches = &qxl_invalidate_caches,
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.init_mem_type = &qxl_init_mem_type,
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.eviction_valuable = ttm_bo_eviction_valuable,
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.evict_flags = &qxl_evict_flags,
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.move = &qxl_bo_move,
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.verify_access = &qxl_verify_access,
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.io_mem_reserve = &qxl_ttm_io_mem_reserve,
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.io_mem_free = &qxl_ttm_io_mem_free,
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.move_notify = &qxl_bo_move_notify,
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};
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int qxl_ttm_init(struct qxl_device *qdev)
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{
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int r;
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int num_io_pages; /* != rom->num_io_pages, we include surface0 */
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r = qxl_ttm_global_init(qdev);
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if (r)
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return r;
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/* No others user of address space so set it to 0 */
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r = ttm_bo_device_init(&qdev->mman.bdev,
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qdev->mman.bo_global_ref.ref.object,
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&qxl_bo_driver,
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qdev->ddev.anon_inode->i_mapping,
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DRM_FILE_PAGE_OFFSET, 0);
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if (r) {
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DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
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return r;
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}
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/* NOTE: this includes the framebuffer (aka surface 0) */
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num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
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r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
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num_io_pages);
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if (r) {
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DRM_ERROR("Failed initializing VRAM heap.\n");
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return r;
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}
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r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV,
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qdev->surfaceram_size / PAGE_SIZE);
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if (r) {
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DRM_ERROR("Failed initializing Surfaces heap.\n");
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return r;
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}
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DRM_INFO("qxl: %uM of VRAM memory size\n",
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(unsigned)qdev->vram_size / (1024 * 1024));
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DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
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((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
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DRM_INFO("qxl: %uM of Surface memory size\n",
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(unsigned)qdev->surfaceram_size / (1024 * 1024));
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return 0;
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}
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void qxl_ttm_fini(struct qxl_device *qdev)
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{
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ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
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ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV);
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ttm_bo_device_release(&qdev->mman.bdev);
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qxl_ttm_global_fini(qdev);
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DRM_INFO("qxl: ttm finalized\n");
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}
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#define QXL_DEBUGFS_MEM_TYPES 2
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#if defined(CONFIG_DEBUG_FS)
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static int qxl_mm_dump_table(struct seq_file *m, void *data)
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{
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struct drm_info_node *node = (struct drm_info_node *)m->private;
|
|
struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
|
|
struct drm_device *dev = node->minor->dev;
|
|
struct qxl_device *rdev = dev->dev_private;
|
|
struct ttm_bo_global *glob = rdev->mman.bdev.glob;
|
|
struct drm_printer p = drm_seq_file_printer(m);
|
|
|
|
spin_lock(&glob->lru_lock);
|
|
drm_mm_print(mm, &p);
|
|
spin_unlock(&glob->lru_lock);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
int qxl_ttm_debugfs_init(struct qxl_device *qdev)
|
|
{
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
|
|
static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
|
|
unsigned i;
|
|
|
|
for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
|
|
if (i == 0)
|
|
sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
|
|
else
|
|
sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
|
|
qxl_mem_types_list[i].name = qxl_mem_types_names[i];
|
|
qxl_mem_types_list[i].show = &qxl_mm_dump_table;
|
|
qxl_mem_types_list[i].driver_features = 0;
|
|
if (i == 0)
|
|
qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
|
|
else
|
|
qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv;
|
|
|
|
}
|
|
return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|