From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Date: Wed, 20 Apr 2016 17:47:10 +0000 Subject: Re: [PATCH 7/8] drm/qxl: Use drm_fb_helper deferred_io support Message-Id: <20160420174710.GR2510@phenom.ffwll.local> List-Id: References: <1461165929-11344-1-git-send-email-noralf@tronnes.org> <1461165929-11344-8-git-send-email-noralf@tronnes.org> In-Reply-To: <1461165929-11344-8-git-send-email-noralf@tronnes.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: Noralf =?iso-8859-1?Q?Tr=F8nnes?= Cc: linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, tomi.valkeinen@ti.com, laurent.pinchart@ideasonboard.com On Wed, Apr 20, 2016 at 05:25:28PM +0200, Noralf Tr=F8nnes wrote: > Use the fbdev deferred io support in drm_fb_helper. > The (struct fb_ops *)->fb_{fillrect,copyarea,imageblit} functions will > now be deferred in the same way that mmap damage is, instead of being > flushed directly. > This patch has only been compile tested. >=20 > Signed-off-by: Noralf Tr=F8nnes > --- > drivers/gpu/drm/qxl/qxl_display.c | 9 +- > drivers/gpu/drm/qxl/qxl_drv.h | 7 +- > drivers/gpu/drm/qxl/qxl_fb.c | 220 ++++++++++----------------------= ------ > drivers/gpu/drm/qxl/qxl_kms.c | 4 - > 4 files changed, 62 insertions(+), 178 deletions(-) >=20 > diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_= display.c > index 030409a..9a03524 100644 > --- a/drivers/gpu/drm/qxl/qxl_display.c > +++ b/drivers/gpu/drm/qxl/qxl_display.c > @@ -465,7 +465,7 @@ static const struct drm_crtc_funcs qxl_crtc_funcs =3D= { > .page_flip =3D qxl_crtc_page_flip, > }; > =20 > -static void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb) > +void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb) > { > struct qxl_framebuffer *qxl_fb =3D to_qxl_framebuffer(fb); > =20 > @@ -527,12 +527,13 @@ int > qxl_framebuffer_init(struct drm_device *dev, > struct qxl_framebuffer *qfb, > const struct drm_mode_fb_cmd2 *mode_cmd, > - struct drm_gem_object *obj) > + struct drm_gem_object *obj, > + const struct drm_framebuffer_funcs *funcs) There should be no need at all to have a separate fb funcs table for the fbdev fb. Both /should/ be able to use the exact same (already existing) ->dirty() callback. We need this only in CMA because CMA is a midlayer used by multiple drivers. With that change you should be able to condense this patch down to pretty much just removing lines. Which is Good (tm). Cheers, Daniel > { > int ret; > =20 > qfb->obj =3D obj; > - ret =3D drm_framebuffer_init(dev, &qfb->base, &qxl_fb_funcs); > + ret =3D drm_framebuffer_init(dev, &qfb->base, funcs); > if (ret) { > qfb->obj =3D NULL; > return ret; > @@ -999,7 +1000,7 @@ qxl_user_framebuffer_create(struct drm_device *dev, > if (qxl_fb =3D NULL) > return NULL; > =20 > - ret =3D qxl_framebuffer_init(dev, qxl_fb, mode_cmd, obj); > + ret =3D qxl_framebuffer_init(dev, qxl_fb, mode_cmd, obj, &qxl_fb_funcs); > if (ret) { > kfree(qxl_fb); > drm_gem_object_unreference_unlocked(obj); > diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h > index 3f3897e..3ad6604 100644 > --- a/drivers/gpu/drm/qxl/qxl_drv.h > +++ b/drivers/gpu/drm/qxl/qxl_drv.h > @@ -324,8 +324,6 @@ struct qxl_device { > struct workqueue_struct *gc_queue; > struct work_struct gc_work; > =20 > - struct work_struct fb_work; > - > struct drm_property *hotplug_mode_update_property; > int monitors_config_width; > int monitors_config_height; > @@ -389,11 +387,13 @@ int qxl_get_handle_for_primary_fb(struct qxl_device= *qdev, > void qxl_fbdev_set_suspend(struct qxl_device *qdev, int state); > =20 > /* qxl_display.c */ > +void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb); > int > qxl_framebuffer_init(struct drm_device *dev, > struct qxl_framebuffer *rfb, > const struct drm_mode_fb_cmd2 *mode_cmd, > - struct drm_gem_object *obj); > + struct drm_gem_object *obj, > + const struct drm_framebuffer_funcs *funcs); > void qxl_display_read_client_monitors_config(struct qxl_device *qdev); > void qxl_send_monitors_config(struct qxl_device *qdev); > int qxl_create_monitors_object(struct qxl_device *qdev); > @@ -553,7 +553,6 @@ int qxl_irq_init(struct qxl_device *qdev); > irqreturn_t qxl_irq_handler(int irq, void *arg); > =20 > /* qxl_fb.c */ > -int qxl_fb_init(struct qxl_device *qdev); > bool qxl_fbdev_qobj_is_fb(struct qxl_device *qdev, struct qxl_bo *qobj); > =20 > int qxl_debugfs_add_files(struct qxl_device *qdev, > diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c > index 06f032d..090dcee 100644 > --- a/drivers/gpu/drm/qxl/qxl_fb.c > +++ b/drivers/gpu/drm/qxl/qxl_fb.c > @@ -30,6 +30,7 @@ > #include "drm/drm.h" > #include "drm/drm_crtc.h" > #include "drm/drm_crtc_helper.h" > +#include "drm/drm_rect.h" > #include "qxl_drv.h" > =20 > #include "qxl_object.h" > @@ -46,15 +47,6 @@ struct qxl_fbdev { > struct list_head delayed_ops; > void *shadow; > int size; > - > - /* dirty memory logging */ > - struct { > - spinlock_t lock; > - unsigned x1; > - unsigned y1; > - unsigned x2; > - unsigned y2; > - } dirty; > }; > =20 > static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image, > @@ -82,169 +74,18 @@ static void qxl_fb_image_init(struct qxl_fb_image *q= xl_fb_image, > } > } > =20 > -static void qxl_fb_dirty_flush(struct fb_info *info) > -{ > - struct qxl_fbdev *qfbdev =3D info->par; > - struct qxl_device *qdev =3D qfbdev->qdev; > - struct qxl_fb_image qxl_fb_image; > - struct fb_image *image =3D &qxl_fb_image.fb_image; > - unsigned long flags; > - u32 x1, x2, y1, y2; > - > - /* TODO: hard coding 32 bpp */ > - int stride =3D qfbdev->qfb.base.pitches[0]; > - > - spin_lock_irqsave(&qfbdev->dirty.lock, flags); > - > - x1 =3D qfbdev->dirty.x1; > - x2 =3D qfbdev->dirty.x2; > - y1 =3D qfbdev->dirty.y1; > - y2 =3D qfbdev->dirty.y2; > - qfbdev->dirty.x1 =3D 0; > - qfbdev->dirty.x2 =3D 0; > - qfbdev->dirty.y1 =3D 0; > - qfbdev->dirty.y2 =3D 0; > - > - spin_unlock_irqrestore(&qfbdev->dirty.lock, flags); > - > - /* > - * we are using a shadow draw buffer, at qdev->surface0_shadow > - */ > - qxl_io_log(qdev, "dirty x[%d, %d], y[%d, %d]", x1, x2, y1, y2); > - image->dx =3D x1; > - image->dy =3D y1; > - image->width =3D x2 - x1 + 1; > - image->height =3D y2 - y1 + 1; > - image->fg_color =3D 0xffffffff; /* unused, just to avoid uninitialized > - warnings */ > - image->bg_color =3D 0; > - image->depth =3D 32; /* TODO: take from somewhere? */ > - image->cmap.start =3D 0; > - image->cmap.len =3D 0; > - image->cmap.red =3D NULL; > - image->cmap.green =3D NULL; > - image->cmap.blue =3D NULL; > - image->cmap.transp =3D NULL; > - image->data =3D qfbdev->shadow + (x1 * 4) + (stride * y1); > - > - qxl_fb_image_init(&qxl_fb_image, qdev, info, NULL); > - qxl_draw_opaque_fb(&qxl_fb_image, stride); > -} > - > -static void qxl_dirty_update(struct qxl_fbdev *qfbdev, > - int x, int y, int width, int height) > -{ > - struct qxl_device *qdev =3D qfbdev->qdev; > - unsigned long flags; > - int x2, y2; > - > - x2 =3D x + width - 1; > - y2 =3D y + height - 1; > - > - spin_lock_irqsave(&qfbdev->dirty.lock, flags); > - > - if ((qfbdev->dirty.y2 - qfbdev->dirty.y1) && > - (qfbdev->dirty.x2 - qfbdev->dirty.x1)) { > - if (qfbdev->dirty.y1 < y) > - y =3D qfbdev->dirty.y1; > - if (qfbdev->dirty.y2 > y2) > - y2 =3D qfbdev->dirty.y2; > - if (qfbdev->dirty.x1 < x) > - x =3D qfbdev->dirty.x1; > - if (qfbdev->dirty.x2 > x2) > - x2 =3D qfbdev->dirty.x2; > - } > - > - qfbdev->dirty.x1 =3D x; > - qfbdev->dirty.x2 =3D x2; > - qfbdev->dirty.y1 =3D y; > - qfbdev->dirty.y2 =3D y2; > - > - spin_unlock_irqrestore(&qfbdev->dirty.lock, flags); > - > - schedule_work(&qdev->fb_work); > -} > - > -static void qxl_deferred_io(struct fb_info *info, > - struct list_head *pagelist) > -{ > - struct qxl_fbdev *qfbdev =3D info->par; > - unsigned long start, end, min, max; > - struct page *page; > - int y1, y2; > - > - min =3D ULONG_MAX; > - max =3D 0; > - list_for_each_entry(page, pagelist, lru) { > - start =3D page->index << PAGE_SHIFT; > - end =3D start + PAGE_SIZE - 1; > - min =3D min(min, start); > - max =3D max(max, end); > - } > - > - if (min < max) { > - y1 =3D min / info->fix.line_length; > - y2 =3D (max / info->fix.line_length) + 1; > - qxl_dirty_update(qfbdev, 0, y1, info->var.xres, y2 - y1); > - } > -}; > - > static struct fb_deferred_io qxl_defio =3D { > .delay =3D QXL_DIRTY_DELAY, > - .deferred_io =3D qxl_deferred_io, > + .deferred_io =3D drm_fb_helper_deferred_io, > }; > =20 > -static void qxl_fb_fillrect(struct fb_info *info, > - const struct fb_fillrect *rect) > -{ > - struct qxl_fbdev *qfbdev =3D info->par; > - > - sys_fillrect(info, rect); > - qxl_dirty_update(qfbdev, rect->dx, rect->dy, rect->width, > - rect->height); > -} > - > -static void qxl_fb_copyarea(struct fb_info *info, > - const struct fb_copyarea *area) > -{ > - struct qxl_fbdev *qfbdev =3D info->par; > - > - sys_copyarea(info, area); > - qxl_dirty_update(qfbdev, area->dx, area->dy, area->width, > - area->height); > -} > - > -static void qxl_fb_imageblit(struct fb_info *info, > - const struct fb_image *image) > -{ > - struct qxl_fbdev *qfbdev =3D info->par; > - > - sys_imageblit(info, image); > - qxl_dirty_update(qfbdev, image->dx, image->dy, image->width, > - image->height); > -} > - > -static void qxl_fb_work(struct work_struct *work) > -{ > - struct qxl_device *qdev =3D container_of(work, struct qxl_device, fb_wo= rk); > - struct qxl_fbdev *qfbdev =3D qdev->mode_info.qfbdev; > - > - qxl_fb_dirty_flush(qfbdev->helper.fbdev); > -} > - > -int qxl_fb_init(struct qxl_device *qdev) > -{ > - INIT_WORK(&qdev->fb_work, qxl_fb_work); > - return 0; > -} > - > static struct fb_ops qxlfb_ops =3D { > .owner =3D THIS_MODULE, > .fb_check_var =3D drm_fb_helper_check_var, > .fb_set_par =3D drm_fb_helper_set_par, /* TODO: copy vmwgfx */ > - .fb_fillrect =3D qxl_fb_fillrect, > - .fb_copyarea =3D qxl_fb_copyarea, > - .fb_imageblit =3D qxl_fb_imageblit, > + .fb_fillrect =3D drm_fb_helper_sys_fillrect, > + .fb_copyarea =3D drm_fb_helper_sys_copyarea, > + .fb_imageblit =3D drm_fb_helper_sys_imageblit, > .fb_pan_display =3D drm_fb_helper_pan_display, > .fb_blank =3D drm_fb_helper_blank, > .fb_setcmap =3D drm_fb_helper_setcmap, > @@ -338,6 +179,53 @@ out_unref: > return ret; > } > =20 > +static int qxlfb_framebuffer_dirty(struct drm_framebuffer *fb, > + struct drm_file *file_priv, > + unsigned flags, unsigned color, > + struct drm_clip_rect *clips, > + unsigned num_clips) > +{ > + struct qxl_device *qdev =3D fb->dev->dev_private; > + struct fb_info *info =3D qdev->fbdev_info; > + struct qxl_fbdev *qfbdev =3D info->par; > + struct qxl_fb_image qxl_fb_image; > + struct fb_image *image =3D &qxl_fb_image.fb_image; > + > + /* TODO: hard coding 32 bpp */ > + int stride =3D qfbdev->qfb.base.pitches[0]; > + > + /* > + * we are using a shadow draw buffer, at qdev->surface0_shadow > + */ > + qxl_io_log(qdev, "dirty x[%d, %d], y[%d, %d]", clips->x1, clips->x2, > + clips->y1, clips->y2); > + image->dx =3D clips->x1; > + image->dy =3D clips->y1; > + image->width =3D drm_clip_rect_width(clips); > + image->height =3D drm_clip_rect_height(clips); > + image->fg_color =3D 0xffffffff; /* unused, just to avoid uninitialized > + warnings */ > + image->bg_color =3D 0; > + image->depth =3D 32; /* TODO: take from somewhere? */ > + image->cmap.start =3D 0; > + image->cmap.len =3D 0; > + image->cmap.red =3D NULL; > + image->cmap.green =3D NULL; > + image->cmap.blue =3D NULL; > + image->cmap.transp =3D NULL; > + image->data =3D qfbdev->shadow + (clips->x1 * 4) + (stride * clips->y1); > + > + qxl_fb_image_init(&qxl_fb_image, qdev, info, NULL); > + qxl_draw_opaque_fb(&qxl_fb_image, stride); > + > + return 0; > +} > + > +static const struct drm_framebuffer_funcs qxlfb_fb_funcs =3D { > + .destroy =3D qxl_user_framebuffer_destroy, > + .dirty =3D qxlfb_framebuffer_dirty, > +}; > + > static int qxlfb_create(struct qxl_fbdev *qfbdev, > struct drm_fb_helper_surface_size *sizes) > { > @@ -383,7 +271,8 @@ static int qxlfb_create(struct qxl_fbdev *qfbdev, > =20 > info->par =3D qfbdev; > =20 > - qxl_framebuffer_init(qdev->ddev, &qfbdev->qfb, &mode_cmd, gobj); > + qxl_framebuffer_init(qdev->ddev, &qfbdev->qfb, &mode_cmd, gobj, > + &qxlfb_fb_funcs); > =20 > fb =3D &qfbdev->qfb.base; > =20 > @@ -504,7 +393,6 @@ int qxl_fbdev_init(struct qxl_device *qdev) > qfbdev->qdev =3D qdev; > qdev->mode_info.qfbdev =3D qfbdev; > spin_lock_init(&qfbdev->delayed_ops_lock); > - spin_lock_init(&qfbdev->dirty.lock); > INIT_LIST_HEAD(&qfbdev->delayed_ops); > =20 > drm_fb_helper_prepare(qdev->ddev, &qfbdev->helper, > diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c > index b2977a1..2319800 100644 > --- a/drivers/gpu/drm/qxl/qxl_kms.c > +++ b/drivers/gpu/drm/qxl/qxl_kms.c > @@ -261,10 +261,6 @@ static int qxl_device_init(struct qxl_device *qdev, > qdev->gc_queue =3D create_singlethread_workqueue("qxl_gc"); > INIT_WORK(&qdev->gc_work, qxl_gc_work); > =20 > - r =3D qxl_fb_init(qdev); > - if (r) > - return r; > - > return 0; > } > =20 > --=20 > 2.2.2 >=20 --=20 Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch