diff options
Diffstat (limited to '')
-rw-r--r-- | src/VBox/Additions/linux/drm/vbox_main.c | 704 |
1 files changed, 704 insertions, 0 deletions
diff --git a/src/VBox/Additions/linux/drm/vbox_main.c b/src/VBox/Additions/linux/drm/vbox_main.c new file mode 100644 index 00000000..ba6ee3c1 --- /dev/null +++ b/src/VBox/Additions/linux/drm/vbox_main.c @@ -0,0 +1,704 @@ +/* $Id: vbox_main.c $ */ +/** @file + * VirtualBox Additions Linux kernel video driver + */ + +/* + * Copyright (C) 2013-2023 Oracle and/or its affiliates. + * This file is based on ast_main.c + * Copyright 2012 Red Hat 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * Authors: Dave Airlie <airlied@redhat.com>, + * Michael Thayer <michael.thayer@oracle.com, + * Hans de Goede <hdegoede@redhat.com> + */ +#include "vbox_drv.h" +#include <drm/drm_fb_helper.h> +#include <drm/drm_crtc_helper.h> + +#if RTLNX_VER_MIN(6,3,0) || RTLNX_RHEL_RANGE(8,9, 8,99) || RTLNX_RHEL_RANGE(9,3, 9,99) +# include <drm/drm_modeset_helper.h> +#endif + +#include <VBoxVideoGuest.h> +#include <VBoxVideoVBE.h> + +#include "hgsmi_channels.h" + +static void vbox_user_framebuffer_destroy(struct drm_framebuffer *fb) +{ + struct vbox_framebuffer *vbox_fb = to_vbox_framebuffer(fb); + + if (vbox_fb->obj) +#if RTLNX_VER_MIN(5,9,0) || RTLNX_RHEL_MIN(8,4) || RTLNX_SUSE_MAJ_PREREQ(15,3) + drm_gem_object_put(vbox_fb->obj); +#else + drm_gem_object_put_unlocked(vbox_fb->obj); +#endif + + drm_framebuffer_cleanup(fb); + kfree(fb); +} + +void vbox_enable_accel(struct vbox_private *vbox) +{ + unsigned int i; + struct VBVABUFFER *vbva; + + if (!vbox->vbva_info || !vbox->vbva_buffers) { + /* Should never happen... */ + DRM_ERROR("vboxvideo: failed to set up VBVA.\n"); + return; + } + + for (i = 0; i < vbox->num_crtcs; ++i) { + if (vbox->vbva_info[i].pVBVA) + continue; + + vbva = (void __force *)vbox->vbva_buffers + + i * VBVA_MIN_BUFFER_SIZE; + if (!VBoxVBVAEnable(&vbox->vbva_info[i], + vbox->guest_pool, vbva, i)) { + /* very old host or driver error. */ + DRM_ERROR("vboxvideo: vbva_enable failed\n"); + return; + } + } +} + +void vbox_disable_accel(struct vbox_private *vbox) +{ + unsigned int i; + + for (i = 0; i < vbox->num_crtcs; ++i) + VBoxVBVADisable(&vbox->vbva_info[i], vbox->guest_pool, i); +} + +void vbox_report_caps(struct vbox_private *vbox) +{ + u32 caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION | + VBVACAPS_IRQ | VBVACAPS_USE_VBVA_ONLY; + + if (vbox->initial_mode_queried) + caps |= VBVACAPS_VIDEO_MODE_HINTS; + + VBoxHGSMISendCapsInfo(vbox->guest_pool, caps); +} + +/** + * Send information about dirty rectangles to VBVA. If necessary we enable + * VBVA first, as this is normally disabled after a change of master in case + * the new master does not send dirty rectangle information (is this even + * allowed?) + */ +void vbox_framebuffer_dirty_rectangles(struct drm_framebuffer *fb, + struct drm_clip_rect *rects, + unsigned int num_rects) +{ + struct vbox_private *vbox = fb->dev->dev_private; + struct drm_crtc *crtc; + unsigned int i; + + /* The user can send rectangles, we do not need the timer. */ + vbox->need_refresh_timer = false; + mutex_lock(&vbox->hw_mutex); + list_for_each_entry(crtc, &fb->dev->mode_config.crtc_list, head) { + if (CRTC_FB(crtc) != fb) + continue; + + for (i = 0; i < num_rects; ++i) { + VBVACMDHDR cmd_hdr; + unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id; + + if ((rects[i].x1 > crtc->x + crtc->hwmode.hdisplay) || + (rects[i].y1 > crtc->y + crtc->hwmode.vdisplay) || + (rects[i].x2 < crtc->x) || + (rects[i].y2 < crtc->y)) + continue; + + cmd_hdr.x = (s16)rects[i].x1; + cmd_hdr.y = (s16)rects[i].y1; + cmd_hdr.w = (u16)rects[i].x2 - rects[i].x1; + cmd_hdr.h = (u16)rects[i].y2 - rects[i].y1; + + if (!VBoxVBVABufferBeginUpdate(&vbox->vbva_info[crtc_id], + vbox->guest_pool)) + continue; + + VBoxVBVAWrite(&vbox->vbva_info[crtc_id], vbox->guest_pool, + &cmd_hdr, sizeof(cmd_hdr)); + VBoxVBVABufferEndUpdate(&vbox->vbva_info[crtc_id]); + } + } + mutex_unlock(&vbox->hw_mutex); +} + +static int vbox_user_framebuffer_dirty(struct drm_framebuffer *fb, + struct drm_file *file_priv, + unsigned int flags, unsigned int color, + struct drm_clip_rect *rects, + unsigned int num_rects) +{ + vbox_framebuffer_dirty_rectangles(fb, rects, num_rects); + + return 0; +} + +static const struct drm_framebuffer_funcs vbox_fb_funcs = { + .destroy = vbox_user_framebuffer_destroy, + .dirty = vbox_user_framebuffer_dirty, +}; + +int vbox_framebuffer_init(struct drm_device *dev, + struct vbox_framebuffer *vbox_fb, +#if RTLNX_VER_MIN(4,5,0) || RTLNX_RHEL_MAJ_PREREQ(7,3) + const struct DRM_MODE_FB_CMD *mode_cmd, +#else + struct DRM_MODE_FB_CMD *mode_cmd, +#endif + struct drm_gem_object *obj) +{ + int ret; + +#if RTLNX_VER_MIN(4,11,0) || RTLNX_RHEL_MAJ_PREREQ(7,5) + drm_helper_mode_fill_fb_struct(dev, &vbox_fb->base, mode_cmd); +#else + drm_helper_mode_fill_fb_struct(&vbox_fb->base, mode_cmd); +#endif + vbox_fb->obj = obj; + ret = drm_framebuffer_init(dev, &vbox_fb->base, &vbox_fb_funcs); + if (ret) { + DRM_ERROR("framebuffer init failed %d\n", ret); + return ret; + } + + return 0; +} + +static struct drm_framebuffer *vbox_user_framebuffer_create( + struct drm_device *dev, + struct drm_file *filp, +#if RTLNX_VER_MIN(4,5,0) || RTLNX_RHEL_MAJ_PREREQ(7,3) + const struct drm_mode_fb_cmd2 *mode_cmd) +#else + struct drm_mode_fb_cmd2 *mode_cmd) +#endif +{ + struct drm_gem_object *obj; + struct vbox_framebuffer *vbox_fb; + int ret = -ENOMEM; + +#if RTLNX_VER_MIN(4,7,0) || RTLNX_RHEL_MAJ_PREREQ(7,4) + obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); +#else + obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]); +#endif + if (!obj) + return ERR_PTR(-ENOENT); + + vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL); + if (!vbox_fb) + goto err_unref_obj; + + ret = vbox_framebuffer_init(dev, vbox_fb, mode_cmd, obj); + if (ret) + goto err_free_vbox_fb; + + return &vbox_fb->base; + +err_free_vbox_fb: + kfree(vbox_fb); +err_unref_obj: +#if RTLNX_VER_MIN(5,9,0) || RTLNX_RHEL_MIN(8,4) || RTLNX_SUSE_MAJ_PREREQ(15,3) + drm_gem_object_put(obj); +#else + drm_gem_object_put_unlocked(obj); +#endif + return ERR_PTR(ret); +} + +static const struct drm_mode_config_funcs vbox_mode_funcs = { + .fb_create = vbox_user_framebuffer_create, +}; + +#if RTLNX_VER_MAX(4,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,3) +# define pci_iomap_range(dev, bar, offset, maxlen) \ + ioremap(pci_resource_start(dev, bar) + (offset), maxlen) +#endif + +/** + * Tell the host about the views. This design originally targeted the + * Windows XP driver architecture and assumed that each screen would + * have a dedicated frame buffer with the command buffer following it, + * the whole being a "view". The host works out which screen a command + * buffer belongs to by checking whether it is in the first view, then + * whether it is in the second and so on. The first match wins. We + * cheat around this by making the first view be the managed memory + * plus the first command buffer, the second the same plus the second + * buffer and so on. + */ +static int vbox_set_views(struct vbox_private *vbox) +{ + VBVAINFOVIEW *p; + int i; + + p = VBoxHGSMIBufferAlloc(vbox->guest_pool, sizeof(*p), + HGSMI_CH_VBVA, VBVA_INFO_VIEW); + if (!p) + return -ENOMEM; + + for (i = 0; i < vbox->num_crtcs; ++i) { + p->u32ViewIndex = i; + p->u32ViewOffset = 0; + p->u32ViewSize = vbox->available_vram_size + + i * VBVA_MIN_BUFFER_SIZE; + p->u32MaxScreenSize = vbox->available_vram_size; + + VBoxHGSMIBufferSubmit(vbox->guest_pool, p); + } + + VBoxHGSMIBufferFree(vbox->guest_pool, p); + + return 0; +} + +static int vbox_accel_init(struct vbox_private *vbox) +{ + unsigned int i, ret; + + vbox->vbva_info = devm_kcalloc(vbox->dev->dev, vbox->num_crtcs, + sizeof(*vbox->vbva_info), GFP_KERNEL); + if (!vbox->vbva_info) + return -ENOMEM; + + /* Take a command buffer for each screen from the end of usable VRAM. */ + vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE; + + vbox->vbva_buffers = pci_iomap_range(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0, + vbox->available_vram_size, + vbox->num_crtcs * + VBVA_MIN_BUFFER_SIZE); + if (!vbox->vbva_buffers) + return -ENOMEM; + + for (i = 0; i < vbox->num_crtcs; ++i) + VBoxVBVASetupBufferContext(&vbox->vbva_info[i], + vbox->available_vram_size + + i * VBVA_MIN_BUFFER_SIZE, + VBVA_MIN_BUFFER_SIZE); + + vbox_enable_accel(vbox); + ret = vbox_set_views(vbox); + if (ret) + goto err_pci_iounmap; + + return 0; + +err_pci_iounmap: + pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->vbva_buffers); + return ret; +} + +static void vbox_accel_fini(struct vbox_private *vbox) +{ + vbox_disable_accel(vbox); + pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->vbva_buffers); +} + +/** Do we support the 4.3 plus mode hint reporting interface? */ +static bool have_hgsmi_mode_hints(struct vbox_private *vbox) +{ + u32 have_hints, have_cursor; + int ret; + + ret = VBoxQueryConfHGSMI(vbox->guest_pool, + VBOX_VBVA_CONF32_MODE_HINT_REPORTING, + &have_hints); + if (ret) + return false; + + ret = VBoxQueryConfHGSMI(vbox->guest_pool, + VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING, + &have_cursor); + if (ret) + return false; + + return have_hints == VINF_SUCCESS && have_cursor == VINF_SUCCESS; +} + +/** + * Our refresh timer call-back. Only used for guests without dirty rectangle + * support. + */ +static void vbox_refresh_timer(struct work_struct *work) +{ + struct vbox_private *vbox = container_of(work, struct vbox_private, + refresh_work.work); + bool have_unblanked = false; + struct drm_crtc *crtci; + + if (!vbox->need_refresh_timer) + return; + list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) { + struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtci); + if (crtci->enabled && !vbox_crtc->blanked) + have_unblanked = true; + } + if (!have_unblanked) + return; + /* This forces a full refresh. */ + vbox_enable_accel(vbox); + /* Schedule the next timer iteration. */ + schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD); +} + +static bool vbox_check_supported(u16 id) +{ + u16 dispi_id; + + vbox_write_ioport(VBE_DISPI_INDEX_ID, id); + dispi_id = inw(VBE_DISPI_IOPORT_DATA); + + return dispi_id == id; +} + +/** + * Set up our heaps and data exchange buffers in VRAM before handing the rest + * to the memory manager. + */ +static int vbox_hw_init(struct vbox_private *vbox) +{ + int ret = -ENOMEM; + + vbox->full_vram_size = inl(VBE_DISPI_IOPORT_DATA); + vbox->any_pitch = vbox_check_supported(VBE_DISPI_ID_ANYX); + + DRM_INFO("VRAM %08x\n", vbox->full_vram_size); + + /* Map guest-heap at end of vram */ + vbox->guest_heap = + pci_iomap_range(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0, GUEST_HEAP_OFFSET(vbox), + GUEST_HEAP_SIZE); + if (!vbox->guest_heap) + return -ENOMEM; + + /* Create guest-heap mem-pool use 2^4 = 16 byte chunks */ + vbox->guest_pool = gen_pool_create(4, -1); + if (!vbox->guest_pool) + goto err_unmap_guest_heap; + + ret = gen_pool_add_virt(vbox->guest_pool, + (unsigned long)vbox->guest_heap, + GUEST_HEAP_OFFSET(vbox), + GUEST_HEAP_USABLE_SIZE, -1); + if (ret) + goto err_destroy_guest_pool; + + /* Reduce available VRAM size to reflect the guest heap. */ + vbox->available_vram_size = GUEST_HEAP_OFFSET(vbox); + /* Linux drm represents monitors as a 32-bit array. */ + VBoxQueryConfHGSMI(vbox->guest_pool, VBOX_VBVA_CONF32_MONITOR_COUNT, + &vbox->num_crtcs); + vbox->num_crtcs = clamp_t(u32, vbox->num_crtcs, 1, VBOX_MAX_SCREENS); + + if (!have_hgsmi_mode_hints(vbox)) { + ret = -ENOTSUPP; + goto err_destroy_guest_pool; + } + + vbox->last_mode_hints = devm_kcalloc(vbox->dev->dev, vbox->num_crtcs, + sizeof(VBVAMODEHINT), + GFP_KERNEL); + if (!vbox->last_mode_hints) { + ret = -ENOMEM; + goto err_destroy_guest_pool; + } + + ret = vbox_accel_init(vbox); + if (ret) + goto err_destroy_guest_pool; + + /* Set up the refresh timer for users which do not send dirty rectangles. */ + INIT_DELAYED_WORK(&vbox->refresh_work, vbox_refresh_timer); + + return 0; + +err_destroy_guest_pool: + gen_pool_destroy(vbox->guest_pool); +err_unmap_guest_heap: + pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->guest_heap); + return ret; +} + +static void vbox_hw_fini(struct vbox_private *vbox) +{ + vbox->need_refresh_timer = false; + cancel_delayed_work(&vbox->refresh_work); + vbox_accel_fini(vbox); + gen_pool_destroy(vbox->guest_pool); + pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->guest_heap); +} + +#if RTLNX_VER_MIN(4,19,0) || RTLNX_RHEL_MIN(8,3) +int vbox_driver_load(struct drm_device *dev) +#else +int vbox_driver_load(struct drm_device *dev, unsigned long flags) +#endif +{ + struct vbox_private *vbox; + int ret = 0; + + if (!vbox_check_supported(VBE_DISPI_ID_HGSMI)) + return -ENODEV; + + vbox = devm_kzalloc(dev->dev, sizeof(*vbox), GFP_KERNEL); + if (!vbox) + return -ENOMEM; + + dev->dev_private = vbox; + vbox->dev = dev; + + mutex_init(&vbox->hw_mutex); + + ret = vbox_hw_init(vbox); + if (ret) + return ret; + + ret = vbox_mm_init(vbox); + if (ret) + goto err_hw_fini; + + drm_mode_config_init(dev); + + dev->mode_config.funcs = (void *)&vbox_mode_funcs; + dev->mode_config.min_width = 64; + dev->mode_config.min_height = 64; + dev->mode_config.preferred_depth = 24; + dev->mode_config.max_width = VBE_DISPI_MAX_XRES; + dev->mode_config.max_height = VBE_DISPI_MAX_YRES; + + ret = vbox_mode_init(dev); + if (ret) + goto err_drm_mode_cleanup; + + ret = vbox_irq_init(vbox); + if (ret) + goto err_mode_fini; + + ret = vbox_fbdev_init(dev); + if (ret) + goto err_irq_fini; + + return 0; + +err_irq_fini: + vbox_irq_fini(vbox); +err_mode_fini: + vbox_mode_fini(dev); +err_drm_mode_cleanup: + drm_mode_config_cleanup(dev); + vbox_mm_fini(vbox); +err_hw_fini: + vbox_hw_fini(vbox); + return ret; +} + +#if RTLNX_VER_MIN(4,11,0) || RTLNX_RHEL_MAJ_PREREQ(7,5) +void vbox_driver_unload(struct drm_device *dev) +#else +int vbox_driver_unload(struct drm_device *dev) +#endif +{ + struct vbox_private *vbox = dev->dev_private; + + vbox_fbdev_fini(dev); + vbox_irq_fini(vbox); + vbox_mode_fini(dev); + drm_mode_config_cleanup(dev); + vbox_mm_fini(vbox); + vbox_hw_fini(vbox); +#if RTLNX_VER_MAX(4,11,0) && !RTLNX_RHEL_MAJ_PREREQ(7,5) + return 0; +#endif +} + +/** + * @note this is described in the DRM framework documentation. AST does not + * have it, but we get an oops on driver unload if it is not present. + */ +void vbox_driver_lastclose(struct drm_device *dev) +{ + struct vbox_private *vbox = dev->dev_private; + +#if RTLNX_VER_MIN(3,16,0) || RTLNX_RHEL_MAJ_PREREQ(7,1) + if (vbox->fbdev) + drm_fb_helper_restore_fbdev_mode_unlocked(&vbox->fbdev->helper); +#else + drm_modeset_lock_all(dev); + if (vbox->fbdev) + drm_fb_helper_restore_fbdev_mode(&vbox->fbdev->helper); + drm_modeset_unlock_all(dev); +#endif +} + +int vbox_gem_create(struct drm_device *dev, + u32 size, bool iskernel, struct drm_gem_object **obj) +{ + struct vbox_bo *vboxbo; + int ret; + + *obj = NULL; + + size = roundup(size, PAGE_SIZE); + if (size == 0) + { + DRM_ERROR("bad size\n"); + return -EINVAL; + } + + ret = vbox_bo_create(dev, size, 0, 0, &vboxbo); + if (ret) { + if (ret != -ERESTARTSYS) + DRM_ERROR("failed to allocate GEM object\n"); + DRM_ERROR("failed to allocate GEM (%d)\n", ret); + return ret; + } + + *obj = &vboxbo->gem; + + return 0; +} + +int vbox_dumb_create(struct drm_file *file, + struct drm_device *dev, struct drm_mode_create_dumb *args) +{ + int ret; + struct drm_gem_object *gobj; + u32 handle; + + args->pitch = args->width * ((args->bpp + 7) / 8); + args->size = args->pitch * args->height; + + ret = vbox_gem_create(dev, args->size, false, &gobj); + if (ret) + return ret; + + ret = drm_gem_handle_create(file, gobj, &handle); +#if RTLNX_VER_MIN(5,9,0) || RTLNX_RHEL_MIN(8,4) || RTLNX_SUSE_MAJ_PREREQ(15,3) + drm_gem_object_put(gobj); +#else + drm_gem_object_put_unlocked(gobj); +#endif + if (ret) + return ret; + + args->handle = handle; + + return 0; +} + +#if RTLNX_VER_MAX(3,12,0) && !RTLNX_RHEL_MAJ_PREREQ(7,3) +int vbox_dumb_destroy(struct drm_file *file, + struct drm_device *dev, u32 handle) +{ + return drm_gem_handle_delete(file, handle); +} +#endif + +#if RTLNX_VER_MAX(4,19,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5) +static void ttm_bo_put(struct ttm_buffer_object *bo) +{ + ttm_bo_unref(&bo); +} +#endif + +void vbox_gem_free_object(struct drm_gem_object *obj) +{ + struct vbox_bo *vbox_bo = gem_to_vbox_bo(obj); + +#if RTLNX_VER_MIN(5,14,0) || RTLNX_RHEL_RANGE(8,6, 8,99) + /* Starting from kernel 5.14, there is a warning appears in dmesg + * on attempt to desroy pinned buffer object. Make sure it is unpinned. */ + while (vbox_bo->bo.pin_count) + { + int ret; + ret = vbox_bo_unpin(vbox_bo); + if (ret) + { + DRM_ERROR("unable to unpin buffer object\n"); + break; + } + } +#endif + + ttm_bo_put(&vbox_bo->bo); +} + +static inline u64 vbox_bo_mmap_offset(struct vbox_bo *bo) +{ +#if RTLNX_VER_MIN(5,4,0) || RTLNX_RHEL_MIN(8,3) || RTLNX_SUSE_MAJ_PREREQ(15,3) + return drm_vma_node_offset_addr(&bo->bo.base.vma_node); +#elif RTLNX_VER_MAX(3,12,0) && !RTLNX_RHEL_MAJ_PREREQ(7,0) + return bo->bo.addr_space_offset; +#else + return drm_vma_node_offset_addr(&bo->bo.vma_node); +#endif /* >= 5.4.0 */ +} + +int +vbox_dumb_mmap_offset(struct drm_file *file, + struct drm_device *dev, + u32 handle, u64 *offset) +{ + struct drm_gem_object *obj; + int ret = 0; + struct vbox_bo *bo; + + mutex_lock(&dev->struct_mutex); +#if RTLNX_VER_MIN(4,7,0) || RTLNX_RHEL_MAJ_PREREQ(7,4) + obj = drm_gem_object_lookup(file, handle); +#else + obj = drm_gem_object_lookup(dev, file, handle); +#endif + if (!obj) { + ret = -ENOENT; + goto out_unlock; + } + + bo = gem_to_vbox_bo(obj); + *offset = vbox_bo_mmap_offset(bo); + +#if RTLNX_VER_MIN(5,14,0) || RTLNX_RHEL_RANGE(8,6, 8,99) + ret = drm_vma_node_allow(&bo->bo.base.vma_node, file); + if (ret) + { + DRM_ERROR("unable to grant previladges to user"); + } +#endif + + drm_gem_object_put(obj); + +out_unlock: + mutex_unlock(&dev->struct_mutex); + return ret; +} |