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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/vmwgfx/vmwgfx_gem.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_gem.c')
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_gem.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c new file mode 100644 index 0000000000..12787bb9c1 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c @@ -0,0 +1,289 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ +/* + * Copyright 2021-2023 VMware, Inc. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include "vmwgfx_bo.h" +#include "vmwgfx_drv.h" + +#include "drm/drm_prime.h" +#include "drm/drm_gem_ttm_helper.h" + +static void vmw_gem_object_free(struct drm_gem_object *gobj) +{ + struct ttm_buffer_object *bo = drm_gem_ttm_of_gem(gobj); + if (bo) + ttm_bo_put(bo); +} + +static int vmw_gem_object_open(struct drm_gem_object *obj, + struct drm_file *file_priv) +{ + return 0; +} + +static void vmw_gem_object_close(struct drm_gem_object *obj, + struct drm_file *file_priv) +{ +} + +static int vmw_gem_pin_private(struct drm_gem_object *obj, bool do_pin) +{ + struct ttm_buffer_object *bo = drm_gem_ttm_of_gem(obj); + struct vmw_bo *vbo = to_vmw_bo(obj); + int ret; + + ret = ttm_bo_reserve(bo, false, false, NULL); + if (unlikely(ret != 0)) + goto err; + + vmw_bo_pin_reserved(vbo, do_pin); + + ttm_bo_unreserve(bo); + +err: + return ret; +} + + +static int vmw_gem_object_pin(struct drm_gem_object *obj) +{ + return vmw_gem_pin_private(obj, true); +} + +static void vmw_gem_object_unpin(struct drm_gem_object *obj) +{ + vmw_gem_pin_private(obj, false); +} + +static struct sg_table *vmw_gem_object_get_sg_table(struct drm_gem_object *obj) +{ + struct ttm_buffer_object *bo = drm_gem_ttm_of_gem(obj); + struct vmw_ttm_tt *vmw_tt = + container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm); + + if (vmw_tt->vsgt.sgt) + return vmw_tt->vsgt.sgt; + + return drm_prime_pages_to_sg(obj->dev, vmw_tt->dma_ttm.pages, vmw_tt->dma_ttm.num_pages); +} + +static const struct vm_operations_struct vmw_vm_ops = { + .pfn_mkwrite = vmw_bo_vm_mkwrite, + .page_mkwrite = vmw_bo_vm_mkwrite, + .fault = vmw_bo_vm_fault, + .open = ttm_bo_vm_open, + .close = ttm_bo_vm_close, +}; + +static const struct drm_gem_object_funcs vmw_gem_object_funcs = { + .free = vmw_gem_object_free, + .open = vmw_gem_object_open, + .close = vmw_gem_object_close, + .print_info = drm_gem_ttm_print_info, + .pin = vmw_gem_object_pin, + .unpin = vmw_gem_object_unpin, + .get_sg_table = vmw_gem_object_get_sg_table, + .vmap = drm_gem_ttm_vmap, + .vunmap = drm_gem_ttm_vunmap, + .mmap = drm_gem_ttm_mmap, + .vm_ops = &vmw_vm_ops, +}; + +int vmw_gem_object_create(struct vmw_private *vmw, + struct vmw_bo_params *params, + struct vmw_bo **p_vbo) +{ + int ret = vmw_bo_create(vmw, params, p_vbo); + + if (ret != 0) + goto out_no_bo; + + (*p_vbo)->tbo.base.funcs = &vmw_gem_object_funcs; +out_no_bo: + return ret; +} + +int vmw_gem_object_create_with_handle(struct vmw_private *dev_priv, + struct drm_file *filp, + uint32_t size, + uint32_t *handle, + struct vmw_bo **p_vbo) +{ + int ret; + struct vmw_bo_params params = { + .domain = (dev_priv->has_mob) ? VMW_BO_DOMAIN_SYS : VMW_BO_DOMAIN_VRAM, + .busy_domain = VMW_BO_DOMAIN_SYS, + .bo_type = ttm_bo_type_device, + .size = size, + .pin = false + }; + + ret = vmw_gem_object_create(dev_priv, ¶ms, p_vbo); + if (ret != 0) + goto out_no_bo; + + ret = drm_gem_handle_create(filp, &(*p_vbo)->tbo.base, handle); +out_no_bo: + return ret; +} + + +int vmw_gem_object_create_ioctl(struct drm_device *dev, void *data, + struct drm_file *filp) +{ + struct vmw_private *dev_priv = vmw_priv(dev); + union drm_vmw_alloc_dmabuf_arg *arg = + (union drm_vmw_alloc_dmabuf_arg *)data; + struct drm_vmw_alloc_dmabuf_req *req = &arg->req; + struct drm_vmw_dmabuf_rep *rep = &arg->rep; + struct vmw_bo *vbo; + uint32_t handle; + int ret; + + ret = vmw_gem_object_create_with_handle(dev_priv, filp, + req->size, &handle, &vbo); + if (ret) + goto out_no_bo; + + rep->handle = handle; + rep->map_handle = drm_vma_node_offset_addr(&vbo->tbo.base.vma_node); + rep->cur_gmr_id = handle; + rep->cur_gmr_offset = 0; + /* drop reference from allocate - handle holds it now */ + drm_gem_object_put(&vbo->tbo.base); +out_no_bo: + return ret; +} + +#if defined(CONFIG_DEBUG_FS) + +static void vmw_bo_print_info(int id, struct vmw_bo *bo, struct seq_file *m) +{ + const char *placement; + const char *type; + + switch (bo->tbo.resource->mem_type) { + case TTM_PL_SYSTEM: + placement = " CPU"; + break; + case VMW_PL_GMR: + placement = " GMR"; + break; + case VMW_PL_MOB: + placement = " MOB"; + break; + case VMW_PL_SYSTEM: + placement = "VCPU"; + break; + case TTM_PL_VRAM: + placement = "VRAM"; + break; + default: + placement = "None"; + break; + } + + switch (bo->tbo.type) { + case ttm_bo_type_device: + type = "device"; + break; + case ttm_bo_type_kernel: + type = "kernel"; + break; + case ttm_bo_type_sg: + type = "sg "; + break; + default: + type = "none "; + break; + } + + seq_printf(m, "\t\t0x%08x: %12zu bytes %s, type = %s", + id, bo->tbo.base.size, placement, type); + seq_printf(m, ", priority = %u, pin_count = %u, GEM refs = %d, TTM refs = %d", + bo->tbo.priority, + bo->tbo.pin_count, + kref_read(&bo->tbo.base.refcount), + kref_read(&bo->tbo.kref)); + seq_puts(m, "\n"); +} + +static int vmw_debugfs_gem_info_show(struct seq_file *m, void *unused) +{ + struct vmw_private *vdev = (struct vmw_private *)m->private; + struct drm_device *dev = &vdev->drm; + struct drm_file *file; + int r; + + r = mutex_lock_interruptible(&dev->filelist_mutex); + if (r) + return r; + + list_for_each_entry(file, &dev->filelist, lhead) { + struct task_struct *task; + struct drm_gem_object *gobj; + struct pid *pid; + int id; + + /* + * Although we have a valid reference on file->pid, that does + * not guarantee that the task_struct who called get_pid() is + * still alive (e.g. get_pid(current) => fork() => exit()). + * Therefore, we need to protect this ->comm access using RCU. + */ + rcu_read_lock(); + pid = rcu_dereference(file->pid); + task = pid_task(pid, PIDTYPE_TGID); + seq_printf(m, "pid %8d command %s:\n", pid_nr(pid), + task ? task->comm : "<unknown>"); + rcu_read_unlock(); + + spin_lock(&file->table_lock); + idr_for_each_entry(&file->object_idr, gobj, id) { + struct vmw_bo *bo = to_vmw_bo(gobj); + + vmw_bo_print_info(id, bo, m); + } + spin_unlock(&file->table_lock); + } + + mutex_unlock(&dev->filelist_mutex); + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(vmw_debugfs_gem_info); + +#endif + +void vmw_debugfs_gem_init(struct vmw_private *vdev) +{ +#if defined(CONFIG_DEBUG_FS) + struct drm_minor *minor = vdev->drm.primary; + struct dentry *root = minor->debugfs_root; + + debugfs_create_file("vmwgfx_gem_info", 0444, root, vdev, + &vmw_debugfs_gem_info_fops); +#endif +} |