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![Archit Taneja](/assets/img/avatar_default.png)
Use the newly created wrapper drm_fb_helper functions instead of calling core fbdev functions directly. They also simplify the fb_info creation. Cc: David Airlie <airlied@linux.ie> Cc: Frediano Ziglio <fziglio@redhat.com> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
554 lines
14 KiB
C
554 lines
14 KiB
C
/*
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* Copyright © 2013 Red Hat
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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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* David Airlie
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*/
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#include <linux/module.h>
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#include <linux/fb.h>
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#include "drmP.h"
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#include "drm/drm.h"
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#include "drm/drm_crtc.h"
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#include "drm/drm_crtc_helper.h"
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#include "qxl_drv.h"
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#include "qxl_object.h"
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#include "drm_fb_helper.h"
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#define QXL_DIRTY_DELAY (HZ / 30)
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struct qxl_fbdev {
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struct drm_fb_helper helper;
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struct qxl_framebuffer qfb;
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struct list_head fbdev_list;
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struct qxl_device *qdev;
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spinlock_t delayed_ops_lock;
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struct list_head delayed_ops;
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void *shadow;
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int size;
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/* dirty memory logging */
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struct {
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spinlock_t lock;
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unsigned x1;
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unsigned y1;
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unsigned x2;
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unsigned y2;
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} dirty;
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};
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static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image,
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struct qxl_device *qdev, struct fb_info *info,
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const struct fb_image *image)
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{
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qxl_fb_image->qdev = qdev;
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if (info) {
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qxl_fb_image->visual = info->fix.visual;
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if (qxl_fb_image->visual == FB_VISUAL_TRUECOLOR ||
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qxl_fb_image->visual == FB_VISUAL_DIRECTCOLOR)
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memcpy(&qxl_fb_image->pseudo_palette,
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info->pseudo_palette,
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sizeof(qxl_fb_image->pseudo_palette));
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} else {
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/* fallback */
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if (image->depth == 1)
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qxl_fb_image->visual = FB_VISUAL_MONO10;
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else
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qxl_fb_image->visual = FB_VISUAL_DIRECTCOLOR;
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}
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if (image) {
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memcpy(&qxl_fb_image->fb_image, image,
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sizeof(qxl_fb_image->fb_image));
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}
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}
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static void qxl_fb_dirty_flush(struct fb_info *info)
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{
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struct qxl_fbdev *qfbdev = info->par;
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struct qxl_device *qdev = qfbdev->qdev;
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struct qxl_fb_image qxl_fb_image;
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struct fb_image *image = &qxl_fb_image.fb_image;
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unsigned long flags;
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u32 x1, x2, y1, y2;
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/* TODO: hard coding 32 bpp */
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int stride = qfbdev->qfb.base.pitches[0];
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spin_lock_irqsave(&qfbdev->dirty.lock, flags);
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x1 = qfbdev->dirty.x1;
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x2 = qfbdev->dirty.x2;
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y1 = qfbdev->dirty.y1;
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y2 = qfbdev->dirty.y2;
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qfbdev->dirty.x1 = 0;
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qfbdev->dirty.x2 = 0;
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qfbdev->dirty.y1 = 0;
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qfbdev->dirty.y2 = 0;
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spin_unlock_irqrestore(&qfbdev->dirty.lock, flags);
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/*
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* we are using a shadow draw buffer, at qdev->surface0_shadow
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*/
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qxl_io_log(qdev, "dirty x[%d, %d], y[%d, %d]", x1, x2, y1, y2);
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image->dx = x1;
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image->dy = y1;
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image->width = x2 - x1 + 1;
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image->height = y2 - y1 + 1;
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image->fg_color = 0xffffffff; /* unused, just to avoid uninitialized
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warnings */
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image->bg_color = 0;
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image->depth = 32; /* TODO: take from somewhere? */
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image->cmap.start = 0;
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image->cmap.len = 0;
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image->cmap.red = NULL;
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image->cmap.green = NULL;
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image->cmap.blue = NULL;
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image->cmap.transp = NULL;
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image->data = qfbdev->shadow + (x1 * 4) + (stride * y1);
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qxl_fb_image_init(&qxl_fb_image, qdev, info, NULL);
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qxl_draw_opaque_fb(&qxl_fb_image, stride);
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}
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static void qxl_dirty_update(struct qxl_fbdev *qfbdev,
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int x, int y, int width, int height)
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{
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struct qxl_device *qdev = qfbdev->qdev;
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unsigned long flags;
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int x2, y2;
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x2 = x + width - 1;
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y2 = y + height - 1;
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spin_lock_irqsave(&qfbdev->dirty.lock, flags);
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if (qfbdev->dirty.y1 < y)
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y = qfbdev->dirty.y1;
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if (qfbdev->dirty.y2 > y2)
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y2 = qfbdev->dirty.y2;
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if (qfbdev->dirty.x1 < x)
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x = qfbdev->dirty.x1;
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if (qfbdev->dirty.x2 > x2)
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x2 = qfbdev->dirty.x2;
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qfbdev->dirty.x1 = x;
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qfbdev->dirty.x2 = x2;
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qfbdev->dirty.y1 = y;
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qfbdev->dirty.y2 = y2;
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spin_unlock_irqrestore(&qfbdev->dirty.lock, flags);
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schedule_work(&qdev->fb_work);
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}
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static void qxl_deferred_io(struct fb_info *info,
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struct list_head *pagelist)
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{
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struct qxl_fbdev *qfbdev = info->par;
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unsigned long start, end, min, max;
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struct page *page;
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int y1, y2;
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min = ULONG_MAX;
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max = 0;
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list_for_each_entry(page, pagelist, lru) {
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start = page->index << PAGE_SHIFT;
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end = start + PAGE_SIZE - 1;
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min = min(min, start);
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max = max(max, end);
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}
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if (min < max) {
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y1 = min / info->fix.line_length;
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y2 = (max / info->fix.line_length) + 1;
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qxl_dirty_update(qfbdev, 0, y1, info->var.xres, y2 - y1);
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}
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};
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static struct fb_deferred_io qxl_defio = {
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.delay = QXL_DIRTY_DELAY,
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.deferred_io = qxl_deferred_io,
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};
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static void qxl_fb_fillrect(struct fb_info *info,
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const struct fb_fillrect *rect)
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{
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struct qxl_fbdev *qfbdev = info->par;
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drm_fb_helper_sys_fillrect(info, rect);
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qxl_dirty_update(qfbdev, rect->dx, rect->dy, rect->width,
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rect->height);
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}
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static void qxl_fb_copyarea(struct fb_info *info,
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const struct fb_copyarea *area)
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{
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struct qxl_fbdev *qfbdev = info->par;
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drm_fb_helper_sys_copyarea(info, area);
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qxl_dirty_update(qfbdev, area->dx, area->dy, area->width,
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area->height);
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}
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static void qxl_fb_imageblit(struct fb_info *info,
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const struct fb_image *image)
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{
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struct qxl_fbdev *qfbdev = info->par;
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drm_fb_helper_sys_imageblit(info, image);
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qxl_dirty_update(qfbdev, image->dx, image->dy, image->width,
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image->height);
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}
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static void qxl_fb_work(struct work_struct *work)
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{
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struct qxl_device *qdev = container_of(work, struct qxl_device, fb_work);
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struct qxl_fbdev *qfbdev = qdev->mode_info.qfbdev;
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qxl_fb_dirty_flush(qfbdev->helper.fbdev);
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}
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int qxl_fb_init(struct qxl_device *qdev)
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{
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INIT_WORK(&qdev->fb_work, qxl_fb_work);
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return 0;
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}
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static struct fb_ops qxlfb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par, /* TODO: copy vmwgfx */
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.fb_fillrect = qxl_fb_fillrect,
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.fb_copyarea = qxl_fb_copyarea,
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.fb_imageblit = qxl_fb_imageblit,
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.fb_pan_display = drm_fb_helper_pan_display,
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.fb_blank = drm_fb_helper_blank,
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.fb_setcmap = drm_fb_helper_setcmap,
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.fb_debug_enter = drm_fb_helper_debug_enter,
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.fb_debug_leave = drm_fb_helper_debug_leave,
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};
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static void qxlfb_destroy_pinned_object(struct drm_gem_object *gobj)
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{
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struct qxl_bo *qbo = gem_to_qxl_bo(gobj);
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int ret;
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ret = qxl_bo_reserve(qbo, false);
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if (likely(ret == 0)) {
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qxl_bo_kunmap(qbo);
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qxl_bo_unpin(qbo);
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qxl_bo_unreserve(qbo);
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}
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drm_gem_object_unreference_unlocked(gobj);
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}
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int qxl_get_handle_for_primary_fb(struct qxl_device *qdev,
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struct drm_file *file_priv,
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uint32_t *handle)
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{
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int r;
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struct drm_gem_object *gobj = qdev->fbdev_qfb->obj;
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BUG_ON(!gobj);
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/* drm_get_handle_create adds a reference - good */
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r = drm_gem_handle_create(file_priv, gobj, handle);
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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 int qxlfb_create_pinned_object(struct qxl_fbdev *qfbdev,
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struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object **gobj_p)
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{
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struct qxl_device *qdev = qfbdev->qdev;
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struct drm_gem_object *gobj = NULL;
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struct qxl_bo *qbo = NULL;
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int ret;
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int aligned_size, size;
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int height = mode_cmd->height;
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int bpp;
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int depth;
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drm_fb_get_bpp_depth(mode_cmd->pixel_format, &bpp, &depth);
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size = mode_cmd->pitches[0] * height;
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aligned_size = ALIGN(size, PAGE_SIZE);
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/* TODO: unallocate and reallocate surface0 for real. Hack to just
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* have a large enough surface0 for 1024x768 Xorg 32bpp mode */
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ret = qxl_gem_object_create(qdev, aligned_size, 0,
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QXL_GEM_DOMAIN_SURFACE,
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false, /* is discardable */
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false, /* is kernel (false means device) */
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NULL,
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&gobj);
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if (ret) {
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pr_err("failed to allocate framebuffer (%d)\n",
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aligned_size);
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return -ENOMEM;
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}
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qbo = gem_to_qxl_bo(gobj);
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qbo->surf.width = mode_cmd->width;
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qbo->surf.height = mode_cmd->height;
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qbo->surf.stride = mode_cmd->pitches[0];
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qbo->surf.format = SPICE_SURFACE_FMT_32_xRGB;
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ret = qxl_bo_reserve(qbo, false);
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if (unlikely(ret != 0))
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goto out_unref;
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ret = qxl_bo_pin(qbo, QXL_GEM_DOMAIN_SURFACE, NULL);
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if (ret) {
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qxl_bo_unreserve(qbo);
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goto out_unref;
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}
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ret = qxl_bo_kmap(qbo, NULL);
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qxl_bo_unreserve(qbo); /* unreserve, will be mmaped */
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if (ret)
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goto out_unref;
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*gobj_p = gobj;
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return 0;
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out_unref:
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qxlfb_destroy_pinned_object(gobj);
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*gobj_p = NULL;
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return ret;
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}
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static int qxlfb_create(struct qxl_fbdev *qfbdev,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct qxl_device *qdev = qfbdev->qdev;
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struct fb_info *info;
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struct drm_framebuffer *fb = NULL;
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struct drm_mode_fb_cmd2 mode_cmd;
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struct drm_gem_object *gobj = NULL;
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struct qxl_bo *qbo = NULL;
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int ret;
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int size;
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int bpp = sizes->surface_bpp;
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int depth = sizes->surface_depth;
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void *shadow;
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mode_cmd.width = sizes->surface_width;
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mode_cmd.height = sizes->surface_height;
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mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 1) / 8), 64);
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mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
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ret = qxlfb_create_pinned_object(qfbdev, &mode_cmd, &gobj);
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qbo = gem_to_qxl_bo(gobj);
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QXL_INFO(qdev, "%s: %dx%d %d\n", __func__, mode_cmd.width,
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mode_cmd.height, mode_cmd.pitches[0]);
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shadow = vmalloc(mode_cmd.pitches[0] * mode_cmd.height);
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/* TODO: what's the usual response to memory allocation errors? */
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BUG_ON(!shadow);
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QXL_INFO(qdev,
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"surface0 at gpu offset %lld, mmap_offset %lld (virt %p, shadow %p)\n",
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qxl_bo_gpu_offset(qbo),
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qxl_bo_mmap_offset(qbo),
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qbo->kptr,
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shadow);
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size = mode_cmd.pitches[0] * mode_cmd.height;
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info = drm_fb_helper_alloc_fbi(&qfbdev->helper);
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if (IS_ERR(info)) {
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ret = PTR_ERR(info);
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goto out_unref;
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}
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info->par = qfbdev;
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qxl_framebuffer_init(qdev->ddev, &qfbdev->qfb, &mode_cmd, gobj);
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fb = &qfbdev->qfb.base;
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/* setup helper with fb data */
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qfbdev->helper.fb = fb;
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qfbdev->shadow = shadow;
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strcpy(info->fix.id, "qxldrmfb");
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drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
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info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
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info->fbops = &qxlfb_ops;
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/*
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* TODO: using gobj->size in various places in this function. Not sure
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* what the difference between the different sizes is.
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*/
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info->fix.smem_start = qdev->vram_base; /* TODO - correct? */
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info->fix.smem_len = gobj->size;
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info->screen_base = qfbdev->shadow;
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info->screen_size = gobj->size;
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drm_fb_helper_fill_var(info, &qfbdev->helper, sizes->fb_width,
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sizes->fb_height);
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/* setup aperture base/size for vesafb takeover */
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info->apertures->ranges[0].base = qdev->ddev->mode_config.fb_base;
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info->apertures->ranges[0].size = qdev->vram_size;
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info->fix.mmio_start = 0;
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info->fix.mmio_len = 0;
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if (info->screen_base == NULL) {
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ret = -ENOSPC;
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goto out_destroy_fbi;
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}
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info->fbdefio = &qxl_defio;
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fb_deferred_io_init(info);
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qdev->fbdev_info = info;
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qdev->fbdev_qfb = &qfbdev->qfb;
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DRM_INFO("fb mappable at 0x%lX, size %lu\n", info->fix.smem_start, (unsigned long)info->screen_size);
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DRM_INFO("fb: depth %d, pitch %d, width %d, height %d\n", fb->depth, fb->pitches[0], fb->width, fb->height);
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return 0;
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out_destroy_fbi:
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drm_fb_helper_release_fbi(&qfbdev->helper);
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out_unref:
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if (qbo) {
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ret = qxl_bo_reserve(qbo, false);
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if (likely(ret == 0)) {
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qxl_bo_kunmap(qbo);
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qxl_bo_unpin(qbo);
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qxl_bo_unreserve(qbo);
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}
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}
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if (fb && ret) {
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drm_gem_object_unreference(gobj);
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drm_framebuffer_cleanup(fb);
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kfree(fb);
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}
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drm_gem_object_unreference(gobj);
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return ret;
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}
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static int qxl_fb_find_or_create_single(
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struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct qxl_fbdev *qfbdev =
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container_of(helper, struct qxl_fbdev, helper);
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int new_fb = 0;
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int ret;
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if (!helper->fb) {
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ret = qxlfb_create(qfbdev, sizes);
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if (ret)
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return ret;
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new_fb = 1;
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}
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return new_fb;
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}
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static int qxl_fbdev_destroy(struct drm_device *dev, struct qxl_fbdev *qfbdev)
|
|
{
|
|
struct qxl_framebuffer *qfb = &qfbdev->qfb;
|
|
|
|
drm_fb_helper_unregister_fbi(&qfbdev->helper);
|
|
drm_fb_helper_release_fbi(&qfbdev->helper);
|
|
|
|
if (qfb->obj) {
|
|
qxlfb_destroy_pinned_object(qfb->obj);
|
|
qfb->obj = NULL;
|
|
}
|
|
drm_fb_helper_fini(&qfbdev->helper);
|
|
vfree(qfbdev->shadow);
|
|
drm_framebuffer_cleanup(&qfb->base);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_fb_helper_funcs qxl_fb_helper_funcs = {
|
|
.fb_probe = qxl_fb_find_or_create_single,
|
|
};
|
|
|
|
int qxl_fbdev_init(struct qxl_device *qdev)
|
|
{
|
|
struct qxl_fbdev *qfbdev;
|
|
int bpp_sel = 32; /* TODO: parameter from somewhere? */
|
|
int ret;
|
|
|
|
qfbdev = kzalloc(sizeof(struct qxl_fbdev), GFP_KERNEL);
|
|
if (!qfbdev)
|
|
return -ENOMEM;
|
|
|
|
qfbdev->qdev = qdev;
|
|
qdev->mode_info.qfbdev = qfbdev;
|
|
spin_lock_init(&qfbdev->delayed_ops_lock);
|
|
spin_lock_init(&qfbdev->dirty.lock);
|
|
INIT_LIST_HEAD(&qfbdev->delayed_ops);
|
|
|
|
drm_fb_helper_prepare(qdev->ddev, &qfbdev->helper,
|
|
&qxl_fb_helper_funcs);
|
|
|
|
ret = drm_fb_helper_init(qdev->ddev, &qfbdev->helper,
|
|
qxl_num_crtc /* num_crtc - QXL supports just 1 */,
|
|
QXLFB_CONN_LIMIT);
|
|
if (ret)
|
|
goto free;
|
|
|
|
ret = drm_fb_helper_single_add_all_connectors(&qfbdev->helper);
|
|
if (ret)
|
|
goto fini;
|
|
|
|
ret = drm_fb_helper_initial_config(&qfbdev->helper, bpp_sel);
|
|
if (ret)
|
|
goto fini;
|
|
|
|
return 0;
|
|
|
|
fini:
|
|
drm_fb_helper_fini(&qfbdev->helper);
|
|
free:
|
|
kfree(qfbdev);
|
|
return ret;
|
|
}
|
|
|
|
void qxl_fbdev_fini(struct qxl_device *qdev)
|
|
{
|
|
if (!qdev->mode_info.qfbdev)
|
|
return;
|
|
|
|
qxl_fbdev_destroy(qdev->ddev, qdev->mode_info.qfbdev);
|
|
kfree(qdev->mode_info.qfbdev);
|
|
qdev->mode_info.qfbdev = NULL;
|
|
}
|
|
|
|
void qxl_fbdev_set_suspend(struct qxl_device *qdev, int state)
|
|
{
|
|
drm_fb_helper_set_suspend(&qdev->mode_info.qfbdev->helper, state);
|
|
}
|
|
|
|
bool qxl_fbdev_qobj_is_fb(struct qxl_device *qdev, struct qxl_bo *qobj)
|
|
{
|
|
if (qobj == gem_to_qxl_bo(qdev->mode_info.qfbdev->qfb.obj))
|
|
return true;
|
|
return false;
|
|
}
|