/*
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* Copyright (C) 2013-2017 Oracle Corporation
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* This file is based on ast_main.c
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* Copyright 2012 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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* Authors: Dave Airlie <airlied@redhat.com>,
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* Michael Thayer <michael.thayer@oracle.com,
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* Hans de Goede <hdegoede@redhat.com>
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*/
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_crtc_helper.h>
|
|
#include "vbox_drv.h"
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#include "vbox_err.h"
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#include "vboxvideo_guest.h"
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#include "vboxvideo_vbe.h"
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static void vbox_user_framebuffer_destroy(struct drm_framebuffer *fb)
|
{
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struct vbox_framebuffer *vbox_fb = to_vbox_framebuffer(fb);
|
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if (vbox_fb->obj)
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drm_gem_object_put_unlocked(vbox_fb->obj);
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|
drm_framebuffer_cleanup(fb);
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kfree(fb);
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}
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void vbox_enable_accel(struct vbox_private *vbox)
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{
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unsigned int i;
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struct vbva_buffer *vbva;
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if (!vbox->vbva_info || !vbox->vbva_buffers) {
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/* Should never happen... */
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DRM_ERROR("vboxvideo: failed to set up VBVA.\n");
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return;
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}
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for (i = 0; i < vbox->num_crtcs; ++i) {
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if (vbox->vbva_info[i].vbva)
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continue;
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vbva = (void __force *)vbox->vbva_buffers +
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i * VBVA_MIN_BUFFER_SIZE;
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if (!vbva_enable(&vbox->vbva_info[i],
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vbox->guest_pool, vbva, i)) {
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/* very old host or driver error. */
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DRM_ERROR("vboxvideo: vbva_enable failed\n");
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return;
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}
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}
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}
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void vbox_disable_accel(struct vbox_private *vbox)
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{
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unsigned int i;
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for (i = 0; i < vbox->num_crtcs; ++i)
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vbva_disable(&vbox->vbva_info[i], vbox->guest_pool, i);
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}
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void vbox_report_caps(struct vbox_private *vbox)
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{
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u32 caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION |
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VBVACAPS_IRQ | VBVACAPS_USE_VBVA_ONLY;
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if (vbox->initial_mode_queried)
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caps |= VBVACAPS_VIDEO_MODE_HINTS;
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hgsmi_send_caps_info(vbox->guest_pool, caps);
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}
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/**
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* Send information about dirty rectangles to VBVA. If necessary we enable
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* 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
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* allowed?)
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*/
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void vbox_framebuffer_dirty_rectangles(struct drm_framebuffer *fb,
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struct drm_clip_rect *rects,
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unsigned int num_rects)
|
{
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struct vbox_private *vbox = fb->dev->dev_private;
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struct drm_crtc *crtc;
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unsigned int i;
|
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mutex_lock(&vbox->hw_mutex);
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list_for_each_entry(crtc, &fb->dev->mode_config.crtc_list, head) {
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if (CRTC_FB(crtc) != fb)
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continue;
|
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vbox_enable_accel(vbox);
|
|
for (i = 0; i < num_rects; ++i) {
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struct vbva_cmd_hdr cmd_hdr;
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unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id;
|
|
if ((rects[i].x1 > crtc->x + crtc->hwmode.hdisplay) ||
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(rects[i].y1 > crtc->y + crtc->hwmode.vdisplay) ||
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(rects[i].x2 < crtc->x) ||
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(rects[i].y2 < crtc->y))
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continue;
|
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cmd_hdr.x = (s16)rects[i].x1;
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cmd_hdr.y = (s16)rects[i].y1;
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cmd_hdr.w = (u16)rects[i].x2 - rects[i].x1;
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cmd_hdr.h = (u16)rects[i].y2 - rects[i].y1;
|
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if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id],
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vbox->guest_pool))
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continue;
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vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool,
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&cmd_hdr, sizeof(cmd_hdr));
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vbva_buffer_end_update(&vbox->vbva_info[crtc_id]);
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}
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}
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mutex_unlock(&vbox->hw_mutex);
|
}
|
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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;
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}
|
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static const struct drm_framebuffer_funcs vbox_fb_funcs = {
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.destroy = vbox_user_framebuffer_destroy,
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.dirty = vbox_user_framebuffer_dirty,
|
};
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int vbox_framebuffer_init(struct drm_device *dev,
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struct vbox_framebuffer *vbox_fb,
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const struct DRM_MODE_FB_CMD *mode_cmd,
|
struct drm_gem_object *obj)
|
{
|
int ret;
|
|
drm_helper_mode_fill_fb_struct(dev, &vbox_fb->base, mode_cmd);
|
vbox_fb->obj = obj;
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ret = drm_framebuffer_init(dev, &vbox_fb->base, &vbox_fb_funcs);
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if (ret) {
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DRM_ERROR("framebuffer init failed %d\n", ret);
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return ret;
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}
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|
return 0;
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}
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|
static struct drm_framebuffer *vbox_user_framebuffer_create(
|
struct drm_device *dev,
|
struct drm_file *filp,
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const struct drm_mode_fb_cmd2 *mode_cmd)
|
{
|
struct drm_gem_object *obj;
|
struct vbox_framebuffer *vbox_fb;
|
int ret = -ENOMEM;
|
|
obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]);
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if (!obj)
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return ERR_PTR(-ENOENT);
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|
vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL);
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if (!vbox_fb)
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goto err_unref_obj;
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ret = vbox_framebuffer_init(dev, vbox_fb, mode_cmd, obj);
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if (ret)
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goto err_free_vbox_fb;
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|
return &vbox_fb->base;
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|
err_free_vbox_fb:
|
kfree(vbox_fb);
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err_unref_obj:
|
drm_gem_object_put_unlocked(obj);
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return ERR_PTR(ret);
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}
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static const struct drm_mode_config_funcs vbox_mode_funcs = {
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.fb_create = vbox_user_framebuffer_create,
|
};
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static int vbox_accel_init(struct vbox_private *vbox)
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{
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unsigned int i;
|
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vbox->vbva_info = devm_kcalloc(vbox->dev->dev, vbox->num_crtcs,
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sizeof(*vbox->vbva_info), GFP_KERNEL);
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if (!vbox->vbva_info)
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return -ENOMEM;
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/* Take a command buffer for each screen from the end of usable VRAM. */
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vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE;
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vbox->vbva_buffers = pci_iomap_range(vbox->dev->pdev, 0,
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vbox->available_vram_size,
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vbox->num_crtcs *
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VBVA_MIN_BUFFER_SIZE);
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if (!vbox->vbva_buffers)
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return -ENOMEM;
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for (i = 0; i < vbox->num_crtcs; ++i)
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vbva_setup_buffer_context(&vbox->vbva_info[i],
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vbox->available_vram_size +
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i * VBVA_MIN_BUFFER_SIZE,
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VBVA_MIN_BUFFER_SIZE);
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|
return 0;
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}
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static void vbox_accel_fini(struct vbox_private *vbox)
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{
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vbox_disable_accel(vbox);
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pci_iounmap(vbox->dev->pdev, vbox->vbva_buffers);
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}
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/** Do we support the 4.3 plus mode hint reporting interface? */
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static bool have_hgsmi_mode_hints(struct vbox_private *vbox)
|
{
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u32 have_hints, have_cursor;
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int ret;
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ret = hgsmi_query_conf(vbox->guest_pool,
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VBOX_VBVA_CONF32_MODE_HINT_REPORTING,
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&have_hints);
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if (ret)
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return false;
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ret = hgsmi_query_conf(vbox->guest_pool,
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VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING,
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&have_cursor);
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if (ret)
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return false;
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return have_hints == VINF_SUCCESS && have_cursor == VINF_SUCCESS;
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}
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static bool vbox_check_supported(u16 id)
|
{
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u16 dispi_id;
|
|
vbox_write_ioport(VBE_DISPI_INDEX_ID, id);
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dispi_id = inw(VBE_DISPI_IOPORT_DATA);
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|
return dispi_id == id;
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}
|
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/**
|
* 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->dev->pdev, 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;
|
|
ret = hgsmi_test_query_conf(vbox->guest_pool);
|
if (ret) {
|
DRM_ERROR("vboxvideo: hgsmi_test_query_conf failed\n");
|
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. */
|
hgsmi_query_conf(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(struct vbva_modehint),
|
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;
|
|
return 0;
|
|
err_destroy_guest_pool:
|
gen_pool_destroy(vbox->guest_pool);
|
err_unmap_guest_heap:
|
pci_iounmap(vbox->dev->pdev, vbox->guest_heap);
|
return ret;
|
}
|
|
static void vbox_hw_fini(struct vbox_private *vbox)
|
{
|
vbox_accel_fini(vbox);
|
gen_pool_destroy(vbox->guest_pool);
|
pci_iounmap(vbox->dev->pdev, vbox->guest_heap);
|
}
|
|
int vbox_driver_load(struct drm_device *dev)
|
{
|
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;
|
}
|
|
void vbox_driver_unload(struct drm_device *dev)
|
{
|
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);
|
}
|
|
/**
|
* @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 (vbox->fbdev)
|
drm_fb_helper_restore_fbdev_mode_unlocked(&vbox->fbdev->helper);
|
}
|
|
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)
|
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;
|
|
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);
|
drm_gem_object_put_unlocked(gobj);
|
if (ret)
|
return ret;
|
|
args->handle = handle;
|
|
return 0;
|
}
|
|
static void vbox_bo_unref(struct vbox_bo **bo)
|
{
|
struct ttm_buffer_object *tbo;
|
|
if ((*bo) == NULL)
|
return;
|
|
tbo = &((*bo)->bo);
|
ttm_bo_unref(&tbo);
|
if (!tbo)
|
*bo = NULL;
|
}
|
|
void vbox_gem_free_object(struct drm_gem_object *obj)
|
{
|
struct vbox_bo *vbox_bo = gem_to_vbox_bo(obj);
|
|
vbox_bo_unref(&vbox_bo);
|
}
|
|
static inline u64 vbox_bo_mmap_offset(struct vbox_bo *bo)
|
{
|
return drm_vma_node_offset_addr(&bo->bo.vma_node);
|
}
|
|
int
|
vbox_dumb_mmap_offset(struct drm_file *file,
|
struct drm_device *dev,
|
u32 handle, u64 *offset)
|
{
|
struct drm_gem_object *obj;
|
int ret;
|
struct vbox_bo *bo;
|
|
mutex_lock(&dev->struct_mutex);
|
obj = drm_gem_object_lookup(file, handle);
|
if (!obj) {
|
ret = -ENOENT;
|
goto out_unlock;
|
}
|
|
bo = gem_to_vbox_bo(obj);
|
*offset = vbox_bo_mmap_offset(bo);
|
|
drm_gem_object_put(obj);
|
ret = 0;
|
|
out_unlock:
|
mutex_unlock(&dev->struct_mutex);
|
return ret;
|
}
|
