diff options
Diffstat (limited to 'vbox_main.c')
| -rw-r--r-- | vbox_main.c | 499 |
1 files changed, 499 insertions, 0 deletions
diff --git a/vbox_main.c b/vbox_main.c new file mode 100644 index 000000000000..1cd1b58c99e8 --- /dev/null +++ b/vbox_main.c @@ -0,0 +1,499 @@ +/* $Id$ */ +/** @file + * VirtualBox Additions Linux kernel video driver + */ +/* + * Copyright (C) 2013 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * -------------------------------------------------------------------- + * + * This code is based on + * ast_main.c + * with the following copyright and permission notice: + * + * 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> + */ +#include "vbox_drv.h" +#include <VBox/VBoxVideoGuest.h> +#include <VBox/VBoxVideo.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_crtc_helper.h> +static void vbox_user_framebuffer_destroy(struct drm_framebuffer *fb) +{ + struct vbox_framebuffer *vbox_fb = to_vbox_framebuffer(fb); + if (vbox_fb->obj) + drm_gem_object_unreference_unlocked(vbox_fb->obj); + LogFunc(("vboxvideo: %d: vbox_fb=%p, vbox_fb->obj=%p\n", __LINE__, + vbox_fb, vbox_fb->obj)); + drm_framebuffer_cleanup(fb); + kfree(fb); +} +void vbox_enable_accel(struct vbox_private *vbox) +{ + unsigned i; + struct VBVABUFFER *vbva; + AssertLogRelReturnVoid(vbox->vbva_info != NULL); + for (i = 0; i < vbox->num_crtcs; ++i) { + if (vbox->vbva_info[i].pVBVA == NULL) { + LogFunc(("vboxvideo: enabling VBVA.\n")); + vbva = (struct VBVABUFFER *) ( ((uint8_t *)vbox->vram) + + vbox->vram_size + + i * VBVA_MIN_BUFFER_SIZE); + if (!VBoxVBVAEnable(&vbox->vbva_info[i], &vbox->submit_info, vbva, i)) + AssertReleaseMsgFailed(("VBoxVBVAEnable failed - heap allocation error, very old host or driver error.\n")); + } + } +} +void vbox_disable_accel(struct vbox_private *vbox) +{ + unsigned i; + for (i = 0; i < vbox->num_crtcs; ++i) + VBoxVBVADisable(&vbox->vbva_info[i], &vbox->submit_info, i); +} +void vbox_enable_caps(struct vbox_private *vbox) +{ + uint32_t caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION + | VBVACAPS_IRQ + | VBVACAPS_USE_VBVA_ONLY; + if (vbox->initial_mode_queried) + caps |= VBVACAPS_VIDEO_MODE_HINTS; + VBoxHGSMISendCapsInfo(&vbox->submit_info, 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 num_rects) +{ + struct vbox_private *vbox = fb->dev->dev_private; + unsigned i; + LogFunc(("vboxvideo: %d: fb=%p, num_rects=%u, vbox=%p\n", __LINE__, fb, + num_rects, vbox)); + vbox_enable_accel(vbox); + mutex_lock(&vbox->hw_mutex); + for (i = 0; i < num_rects; ++i) + { + struct drm_crtc *crtc; + list_for_each_entry(crtc, &fb->dev->mode_config.crtc_list, head) + { + unsigned crtc_id = to_vbox_crtc(crtc)->crtc_id; + VBVACMDHDR cmd_hdr; + if ( CRTC_FB(crtc) != fb + || 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 = (int16_t)rects[i].x1; + cmd_hdr.y = (int16_t)rects[i].y1; + cmd_hdr.w = (uint16_t)rects[i].x2 - rects[i].x1; + cmd_hdr.h = (uint16_t)rects[i].y2 - rects[i].y1; + if (VBoxVBVABufferBeginUpdate(&vbox->vbva_info[crtc_id], + &vbox->submit_info)) + { + VBoxVBVAWrite(&vbox->vbva_info[crtc_id], &vbox->submit_info, &cmd_hdr, + sizeof(cmd_hdr)); + VBoxVBVABufferEndUpdate(&vbox->vbva_info[crtc_id]); + } + } + } + mutex_unlock(&vbox->hw_mutex); + LogFunc(("vboxvideo: %d\n", __LINE__)); +} +static int vbox_user_framebuffer_dirty(struct drm_framebuffer *fb, + struct drm_file *file_priv, + unsigned flags, unsigned color, + struct drm_clip_rect *rects, + unsigned 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 LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) + const +#endif + struct DRM_MODE_FB_CMD *mode_cmd, + struct drm_gem_object *obj) +{ + int ret; + LogFunc(("vboxvideo: %d: dev=%p, vbox_fb=%p, obj=%p\n", __LINE__, dev, + vbox_fb, obj)); + drm_helper_mode_fill_fb_struct(&vbox_fb->base, mode_cmd); + 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); + LogFunc(("vboxvideo: %d\n", __LINE__)); + return ret; + } + LogFunc(("vboxvideo: %d\n", __LINE__)); + return 0; +} +static struct drm_framebuffer * +vbox_user_framebuffer_create(struct drm_device *dev, + struct drm_file *filp, +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) + const +#endif + struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct drm_gem_object *obj; + struct vbox_framebuffer *vbox_fb; + int ret; + LogFunc(("vboxvideo: %d\n", __LINE__)); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) + 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 == NULL) + return ERR_PTR(-ENOENT); + vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL); + if (!vbox_fb) { + drm_gem_object_unreference_unlocked(obj); + return ERR_PTR(-ENOMEM); + } + ret = vbox_framebuffer_init(dev, vbox_fb, mode_cmd, obj); + if (ret) { + drm_gem_object_unreference_unlocked(obj); + kfree(vbox_fb); + return ERR_PTR(ret); + } + LogFunc(("vboxvideo: %d\n", __LINE__)); + return &vbox_fb->base; +} +static const struct drm_mode_config_funcs vbox_mode_funcs = { + .fb_create = vbox_user_framebuffer_create, +}; +static void vbox_accel_fini(struct vbox_private *vbox) +{ + if (vbox->vbva_info) + { + vbox_disable_accel(vbox); + kfree(vbox->vbva_info); + vbox->vbva_info = NULL; + } +} +static int vbox_accel_init(struct vbox_private *vbox) +{ + unsigned i; + LogFunc(("vboxvideo: %d: vbox=%p, vbox->num_crtcs=%u, vbox->vbva_info=%p\n", + __LINE__, vbox, (unsigned)vbox->num_crtcs, vbox->vbva_info)); + if (!vbox->vbva_info) + { + vbox->vbva_info = kzalloc( sizeof(struct VBVABUFFERCONTEXT) + * vbox->num_crtcs, + GFP_KERNEL); + if (!vbox->vbva_info) + return -ENOMEM; + } + /* Take a command buffer for each screen from the end of usable VRAM. */ + vbox->vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE; + for (i = 0; i < vbox->num_crtcs; ++i) + VBoxVBVASetupBufferContext(&vbox->vbva_info[i], + vbox->vram_size + i * VBVA_MIN_BUFFER_SIZE, + VBVA_MIN_BUFFER_SIZE); + LogFunc(("vboxvideo: %d: vbox->vbva_info=%p, vbox->vram_size=%u\n", + __LINE__, vbox->vbva_info, (unsigned)vbox->vram_size)); + return 0; +} +/** Allocation function for the HGSMI heap and data. */ +static DECLCALLBACK(void *) alloc_hgsmi_environ(void *environ, HGSMISIZE size) +{ + NOREF(environ); + return kmalloc(size, GFP_KERNEL); +} +/** Free function for the HGSMI heap and data. */ +static DECLCALLBACK(void) free_hgsmi_environ(void *environ, void *ptr) +{ + NOREF(environ); + kfree(ptr); +} +/** Pointers to the HGSMI heap and data manipulation functions. */ +static HGSMIENV hgsmi_environ = +{ + NULL, + alloc_hgsmi_environ, + free_hgsmi_environ +}; +/** Do we support the 4.3 plus mode hint reporting interface? */ +static bool have_hgsmi_mode_hints(struct vbox_private *vbox) +{ + uint32_t have_hints, have_cursor; + return RT_SUCCESS(VBoxQueryConfHGSMI(&vbox->submit_info, VBOX_VBVA_CONF32_MODE_HINT_REPORTING, &have_hints)) + && RT_SUCCESS(VBoxQueryConfHGSMI(&vbox->submit_info, VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING, &have_cursor)) + && have_hints == VINF_SUCCESS + && have_cursor == VINF_SUCCESS; +} +/** 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) +{ + uint32_t base_offset, guest_heap_offset, guest_heap_size, host_flags_offset; + void *guest_heap; + vbox->full_vram_size = VBoxVideoGetVRAMSize(); + vbox->any_pitch = VBoxVideoAnyWidthAllowed(); + DRM_INFO("VRAM %08x\n", vbox->full_vram_size); + VBoxHGSMIGetBaseMappingInfo(vbox->full_vram_size, &base_offset, NULL, + &guest_heap_offset, &guest_heap_size, &host_flags_offset); + guest_heap = ((uint8_t *)vbox->vram) + base_offset + guest_heap_offset; + vbox->host_flags_offset = base_offset + host_flags_offset; + if (RT_FAILURE(VBoxHGSMISetupGuestContext(&vbox->submit_info, guest_heap, + guest_heap_size, + base_offset + guest_heap_offset, + &hgsmi_environ))) + return -ENOMEM; + /* Reduce available VRAM size to reflect the guest heap. */ + vbox->vram_size = base_offset; + /* Linux drm represents monitors as a 32-bit array. */ + vbox->num_crtcs = RT_MIN(VBoxHGSMIGetMonitorCount(&vbox->submit_info), 32); + if (!have_hgsmi_mode_hints(vbox)) + return -ENOTSUPP; + vbox->last_mode_hints = kzalloc(sizeof(VBVAMODEHINT) * vbox->num_crtcs, GFP_KERNEL); + if (!vbox->last_mode_hints) + return -ENOMEM; + return vbox_accel_init(vbox); +} +static void vbox_hw_fini(struct vbox_private *vbox) +{ + vbox_accel_fini(vbox); + if (vbox->last_mode_hints) + kfree(vbox->last_mode_hints); + vbox->last_mode_hints = NULL; +} +int vbox_driver_load(struct drm_device *dev, unsigned long flags) +{ + struct vbox_private *vbox; + int ret = 0; + LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev)); + if (!VBoxHGSMIIsSupported()) + return -ENODEV; + vbox = kzalloc(sizeof(struct vbox_private), GFP_KERNEL); + if (!vbox) + return -ENOMEM; + dev->dev_private = vbox; + vbox->dev = dev; + mutex_init(&vbox->hw_mutex); + /* I hope this won't interfere with the memory manager. */ + vbox->vram = pci_iomap(dev->pdev, 0, 0); + if (!vbox->vram) { + ret = -EIO; + goto out_free; + } + ret = vbox_hw_init(vbox); + if (ret) + goto out_free; + ret = vbox_mm_init(vbox); + if (ret) + goto out_free; + 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 out_free; + ret = vbox_irq_init(vbox); + if (ret) + goto out_free; + ret = vbox_fbdev_init(dev); + if (ret) + goto out_free; + LogFunc(("vboxvideo: %d: vbox=%p, vbox->vram=%p, vbox->full_vram_size=%u\n", + __LINE__, vbox, vbox->vram, (unsigned)vbox->full_vram_size)); + return 0; +out_free: + vbox_driver_unload(dev); + LogFunc(("vboxvideo: %d: ret=%d\n", __LINE__, ret)); + return ret; +} +int vbox_driver_unload(struct drm_device *dev) +{ + struct vbox_private *vbox = dev->dev_private; + LogFunc(("vboxvideo: %d\n", __LINE__)); + vbox_fbdev_fini(dev); + vbox_irq_fini(vbox); + vbox_mode_fini(dev); + if (dev->mode_config.funcs) + drm_mode_config_cleanup(dev); + vbox_hw_fini(vbox); + vbox_mm_fini(vbox); + if (vbox->vram) + pci_iounmap(dev->pdev, vbox->vram); + kfree(vbox); + dev->dev_private = NULL; + LogFunc(("vboxvideo: %d\n", __LINE__)); + return 0; +} +/** @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 LINUX_VERSION_CODE >= KERNEL_VERSION(3, 16, 0) + 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; + LogFunc(("vboxvideo: %d: dev=%p, size=%u, iskernel=%u\n", __LINE__, + dev, (unsigned)size, (unsigned)iskernel)); + *obj = NULL; + size = roundup(size, PAGE_SIZE); + if (size == 0) + return -EINVAL; + ret = vbox_bo_create(dev, size, 0, 0, &vboxbo); + if (ret) { + if (ret != -ERESTARTSYS) + DRM_ERROR("failed to allocate GEM object\n"); + return ret; + } + *obj = &vboxbo->gem; + LogFunc(("vboxvideo: %d: obj=%p\n", __LINE__, obj)); + 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; + LogFunc(("vboxvideo: %d: args->width=%u, args->height=%u, args->bpp=%u\n", + __LINE__, (unsigned)args->width, (unsigned)args->height, + (unsigned)args->bpp)); + 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); + drm_gem_object_unreference_unlocked(gobj); + if (ret) + return ret; + args->handle = handle; + LogFunc(("vboxvideo: %d: args->handle=%u\n", __LINE__, + (unsigned)args->handle)); + return 0; +} +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) +int vbox_dumb_destroy(struct drm_file *file, + struct drm_device *dev, + uint32_t handle) +{ + LogFunc(("vboxvideo: %d: dev=%p, handle=%u\n", __LINE__, dev, + (unsigned)handle)); + return drm_gem_handle_delete(file, handle); +} +#endif +static void vbox_bo_unref(struct vbox_bo **bo) +{ + struct ttm_buffer_object *tbo; + if ((*bo) == NULL) + return; + LogFunc(("vboxvideo: %d: bo=%p\n", __LINE__, bo)); + tbo = &((*bo)->bo); + ttm_bo_unref(&tbo); + if (tbo == NULL) + *bo = NULL; +} +void vbox_gem_free_object(struct drm_gem_object *obj) +{ + struct vbox_bo *vbox_bo = gem_to_vbox_bo(obj); + LogFunc(("vboxvideo: %d: vbox_bo=%p\n", __LINE__, vbox_bo)); + vbox_bo_unref(&vbox_bo); +} +static inline u64 vbox_bo_mmap_offset(struct vbox_bo *bo) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) + return bo->bo.addr_space_offset; +#else + return drm_vma_node_offset_addr(&bo->bo.vma_node); +#endif +} +int +vbox_dumb_mmap_offset(struct drm_file *file, + struct drm_device *dev, + uint32_t handle, + uint64_t *offset) +{ + struct drm_gem_object *obj; + int ret; + struct vbox_bo *bo; + LogFunc(("vboxvideo: %d: dev=%p, handle=%u\n", __LINE__, + dev, (unsigned)handle)); + mutex_lock(&dev->struct_mutex); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) + obj = drm_gem_object_lookup(file, handle); +#else + obj = drm_gem_object_lookup(dev, file, handle); +#endif + if (obj == NULL) { + ret = -ENOENT; + goto out_unlock; + } + bo = gem_to_vbox_bo(obj); + *offset = vbox_bo_mmap_offset(bo); + drm_gem_object_unreference(obj); + ret = 0; + LogFunc(("vboxvideo: %d: bo=%p, *offset=%llu\n", __LINE__, + bo, (unsigned long long)*offset)); +out_unlock: + mutex_unlock(&dev->struct_mutex); + return ret; +}
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