Contributors: 32
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Zimmermann |
427 |
19.71% |
13 |
10.57% |
| Ville Syrjälä |
360 |
16.62% |
17 |
13.82% |
| Jesse Barnes |
355 |
16.39% |
6 |
4.88% |
| Chris Wilson |
304 |
14.04% |
23 |
18.70% |
| Jani Nikula |
153 |
7.06% |
14 |
11.38% |
| Dave Airlie |
132 |
6.09% |
9 |
7.32% |
| Rodrigo Vivi |
84 |
3.88% |
3 |
2.44% |
| Nirmoy Das |
83 |
3.83% |
3 |
2.44% |
| Daniel Vetter |
78 |
3.60% |
7 |
5.69% |
| Wambui Karuga |
64 |
2.95% |
1 |
0.81% |
| Maarten Lankhorst |
34 |
1.57% |
4 |
3.25% |
| Jouni Högander |
15 |
0.69% |
2 |
1.63% |
| Mohammed Khajapasha |
15 |
0.69% |
1 |
0.81% |
| Archit Taneja |
8 |
0.37% |
1 |
0.81% |
| Clint Taylor |
5 |
0.23% |
1 |
0.81% |
| Tejas Upadhyay |
5 |
0.23% |
1 |
0.81% |
| Dan Carpenter |
4 |
0.18% |
1 |
0.81% |
| Daniel Stone |
4 |
0.18% |
1 |
0.81% |
| Damien Lespiau |
4 |
0.18% |
2 |
1.63% |
| Pankaj Bharadiya |
4 |
0.18% |
1 |
0.81% |
| Ander Conselvan de Oliveira |
4 |
0.18% |
1 |
0.81% |
| Ben Widawsky |
4 |
0.18% |
1 |
0.81% |
| Lukas Wunner |
4 |
0.18% |
1 |
0.81% |
| Imre Deak |
3 |
0.14% |
1 |
0.81% |
| Sam Ravnborg |
3 |
0.14% |
1 |
0.81% |
| Tvrtko A. Ursulin |
2 |
0.09% |
1 |
0.81% |
| Harsha Sharma |
2 |
0.09% |
1 |
0.81% |
| David Howells |
2 |
0.09% |
1 |
0.81% |
| Ben Gamari |
1 |
0.05% |
1 |
0.81% |
| Sascha Hauer |
1 |
0.05% |
1 |
0.81% |
| Andrzej Hajda |
1 |
0.05% |
1 |
0.81% |
| Stefan Christ |
1 |
0.05% |
1 |
0.81% |
| Total |
2166 |
|
123 |
|
/*
* Copyright © 2007 David Airlie
*
* 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, sublicense,
* 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 above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* David Airlie
*/
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/sysrq.h>
#include <linux/tty.h>
#include <linux/vga_switcheroo.h>
#include <drm/clients/drm_client_setup.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_managed.h>
#include <drm/drm_print.h>
#include "i915_vma.h"
#include "intel_bo.h"
#include "intel_display_core.h"
#include "intel_display_rpm.h"
#include "intel_display_types.h"
#include "intel_fb.h"
#include "intel_fb_pin.h"
#include "intel_fbdev.h"
#include "intel_fbdev_fb.h"
#include "intel_frontbuffer.h"
struct intel_fbdev {
struct intel_framebuffer *fb;
struct i915_vma *vma;
unsigned long vma_flags;
};
static struct intel_fbdev *to_intel_fbdev(struct drm_fb_helper *fb_helper)
{
struct intel_display *display = to_intel_display(fb_helper->client.dev);
return display->fbdev.fbdev;
}
static struct intel_frontbuffer *to_frontbuffer(struct intel_fbdev *ifbdev)
{
return ifbdev->fb->frontbuffer;
}
static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev)
{
intel_frontbuffer_invalidate(to_frontbuffer(ifbdev), ORIGIN_CPU);
}
FB_GEN_DEFAULT_DEFERRED_IOMEM_OPS(intel_fbdev,
drm_fb_helper_damage_range,
drm_fb_helper_damage_area)
static int intel_fbdev_set_par(struct fb_info *info)
{
struct intel_fbdev *ifbdev = to_intel_fbdev(info->par);
int ret;
ret = drm_fb_helper_set_par(info);
if (ret == 0)
intel_fbdev_invalidate(ifbdev);
return ret;
}
static int intel_fbdev_blank(int blank, struct fb_info *info)
{
struct intel_fbdev *ifbdev = to_intel_fbdev(info->par);
int ret;
ret = drm_fb_helper_blank(blank, info);
if (ret == 0)
intel_fbdev_invalidate(ifbdev);
return ret;
}
static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct intel_fbdev *ifbdev = to_intel_fbdev(info->par);
int ret;
ret = drm_fb_helper_pan_display(var, info);
if (ret == 0)
intel_fbdev_invalidate(ifbdev);
return ret;
}
static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct drm_fb_helper *fb_helper = info->par;
struct drm_gem_object *obj = drm_gem_fb_get_obj(fb_helper->fb, 0);
return intel_bo_fb_mmap(obj, vma);
}
static void intel_fbdev_fb_destroy(struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
struct intel_fbdev *ifbdev = to_intel_fbdev(fb_helper);
drm_fb_helper_fini(fb_helper);
/*
* We rely on the object-free to release the VMA pinning for
* the info->screen_base mmaping. Leaking the VMA is simpler than
* trying to rectify all the possible error paths leading here.
*/
intel_fb_unpin_vma(ifbdev->vma, ifbdev->vma_flags);
drm_framebuffer_remove(fb_helper->fb);
drm_client_release(&fb_helper->client);
drm_fb_helper_unprepare(fb_helper);
kfree(fb_helper);
}
__diag_push();
__diag_ignore_all("-Woverride-init", "Allow field initialization overrides for fb ops");
static const struct fb_ops intelfb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_DEFERRED_OPS_RDWR(intel_fbdev),
DRM_FB_HELPER_DEFAULT_OPS,
.fb_set_par = intel_fbdev_set_par,
.fb_blank = intel_fbdev_blank,
.fb_pan_display = intel_fbdev_pan_display,
__FB_DEFAULT_DEFERRED_OPS_DRAW(intel_fbdev),
.fb_mmap = intel_fbdev_mmap,
.fb_destroy = intel_fbdev_fb_destroy,
};
__diag_pop();
static int intelfb_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
{
if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
return 0;
if (helper->fb->funcs->dirty)
return helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
return 0;
}
static void intelfb_restore(struct drm_fb_helper *fb_helper)
{
struct intel_fbdev *ifbdev = to_intel_fbdev(fb_helper);
intel_fbdev_invalidate(ifbdev);
}
static void intelfb_set_suspend(struct drm_fb_helper *fb_helper, bool suspend)
{
struct fb_info *info = fb_helper->info;
/*
* When resuming from hibernation, Linux restores the object's
* content from swap if the buffer is backed by shmemfs. If the
* object is stolen however, it will be full of whatever garbage
* was left in there. Clear it to zero in this case.
*/
if (!suspend && !intel_bo_is_shmem(intel_fb_bo(fb_helper->fb)))
memset_io(info->screen_base, 0, info->screen_size);
fb_set_suspend(info, suspend);
}
static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
.fb_dirty = intelfb_dirty,
.fb_restore = intelfb_restore,
.fb_set_suspend = intelfb_set_suspend,
};
int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct intel_display *display = to_intel_display(helper->dev);
struct intel_fbdev *ifbdev = to_intel_fbdev(helper);
struct intel_framebuffer *fb = ifbdev->fb;
struct ref_tracker *wakeref;
struct fb_info *info;
struct i915_vma *vma;
unsigned long flags = 0;
bool prealloc = false;
struct drm_gem_object *obj;
int ret;
ifbdev->fb = NULL;
if (fb &&
(sizes->fb_width > fb->base.width ||
sizes->fb_height > fb->base.height)) {
drm_dbg_kms(display->drm,
"BIOS fb too small (%dx%d), we require (%dx%d),"
" releasing it\n",
fb->base.width, fb->base.height,
sizes->fb_width, sizes->fb_height);
drm_framebuffer_put(&fb->base);
fb = NULL;
}
if (!fb || drm_WARN_ON(display->drm, !intel_fb_bo(&fb->base))) {
drm_dbg_kms(display->drm,
"no BIOS fb, allocating a new one\n");
fb = intel_fbdev_fb_alloc(helper, sizes);
if (IS_ERR(fb))
return PTR_ERR(fb);
} else {
drm_dbg_kms(display->drm, "re-using BIOS fb\n");
prealloc = true;
sizes->fb_width = fb->base.width;
sizes->fb_height = fb->base.height;
}
wakeref = intel_display_rpm_get(display);
/* Pin the GGTT vma for our access via info->screen_base.
* This also validates that any existing fb inherited from the
* BIOS is suitable for own access.
*/
vma = intel_fb_pin_to_ggtt(&fb->base, &fb->normal_view.gtt,
fb->min_alignment, 0,
intel_fb_view_vtd_guard(&fb->base, &fb->normal_view,
DRM_MODE_ROTATE_0),
false, &flags);
if (IS_ERR(vma)) {
ret = PTR_ERR(vma);
goto out_unlock;
}
info = drm_fb_helper_alloc_info(helper);
if (IS_ERR(info)) {
drm_err(display->drm, "Failed to allocate fb_info (%pe)\n", info);
ret = PTR_ERR(info);
goto out_unpin;
}
helper->funcs = &intel_fb_helper_funcs;
helper->fb = &fb->base;
info->fbops = &intelfb_ops;
obj = intel_fb_bo(&fb->base);
ret = intel_fbdev_fb_fill_info(display, info, obj, vma);
if (ret)
goto out_unpin;
drm_fb_helper_fill_info(info, display->drm->fb_helper, sizes);
/* If the object is shmemfs backed, it will have given us zeroed pages.
* If the object is stolen however, it will be full of whatever
* garbage was left in there.
*/
if (!intel_bo_is_shmem(obj) && !prealloc)
memset_io(info->screen_base, 0, info->screen_size);
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
drm_dbg_kms(display->drm, "allocated %dx%d fb: 0x%08x\n",
fb->base.width, fb->base.height,
i915_ggtt_offset(vma));
ifbdev->fb = fb;
ifbdev->vma = vma;
ifbdev->vma_flags = flags;
intel_display_rpm_put(display, wakeref);
return 0;
out_unpin:
intel_fb_unpin_vma(vma, flags);
out_unlock:
intel_display_rpm_put(display, wakeref);
return ret;
}
/*
* Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
* The core display code will have read out the current plane configuration,
* so we use that to figure out if there's an object for us to use as the
* fb, and if so, we re-use it for the fbdev configuration.
*
* Note we only support a single fb shared across pipes for boot (mostly for
* fbcon), so we just find the biggest and use that.
*/
static bool intel_fbdev_init_bios(struct intel_display *display,
struct intel_fbdev *ifbdev)
{
struct intel_framebuffer *fb = NULL;
struct intel_crtc *crtc;
unsigned int max_size = 0;
/* Find the largest fb */
for_each_intel_crtc(display->drm, crtc) {
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
struct intel_plane *plane =
to_intel_plane(crtc->base.primary);
struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
struct drm_gem_object *obj = intel_fb_bo(plane_state->uapi.fb);
if (!crtc_state->uapi.active) {
drm_dbg_kms(display->drm,
"[CRTC:%d:%s] not active, skipping\n",
crtc->base.base.id, crtc->base.name);
continue;
}
if (!obj) {
drm_dbg_kms(display->drm,
"[PLANE:%d:%s] no fb, skipping\n",
plane->base.base.id, plane->base.name);
continue;
}
if (obj->size > max_size) {
drm_dbg_kms(display->drm,
"found possible fb from [PLANE:%d:%s]\n",
plane->base.base.id, plane->base.name);
fb = to_intel_framebuffer(plane_state->uapi.fb);
max_size = obj->size;
}
}
if (!fb) {
drm_dbg_kms(display->drm,
"no active fbs found, not using BIOS config\n");
goto out;
}
/* Now make sure all the pipes will fit into it */
for_each_intel_crtc(display->drm, crtc) {
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
struct intel_plane *plane =
to_intel_plane(crtc->base.primary);
unsigned int cur_size;
if (!crtc_state->uapi.active) {
drm_dbg_kms(display->drm,
"[CRTC:%d:%s] not active, skipping\n",
crtc->base.base.id, crtc->base.name);
continue;
}
drm_dbg_kms(display->drm, "checking [PLANE:%d:%s] for BIOS fb\n",
plane->base.base.id, plane->base.name);
/*
* See if the plane fb we found above will fit on this
* pipe. Note we need to use the selected fb's pitch and bpp
* rather than the current pipe's, since they differ.
*/
cur_size = crtc_state->uapi.adjusted_mode.crtc_hdisplay;
cur_size = cur_size * fb->base.format->cpp[0];
if (fb->base.pitches[0] < cur_size) {
drm_dbg_kms(display->drm,
"fb not wide enough for [PLANE:%d:%s] (%d vs %d)\n",
plane->base.base.id, plane->base.name,
cur_size, fb->base.pitches[0]);
fb = NULL;
break;
}
cur_size = crtc_state->uapi.adjusted_mode.crtc_vdisplay;
cur_size = intel_fb_align_height(&fb->base, 0, cur_size);
cur_size *= fb->base.pitches[0];
drm_dbg_kms(display->drm,
"[CRTC:%d:%s] area: %dx%d, bpp: %d, size: %d\n",
crtc->base.base.id, crtc->base.name,
crtc_state->uapi.adjusted_mode.crtc_hdisplay,
crtc_state->uapi.adjusted_mode.crtc_vdisplay,
fb->base.format->cpp[0] * 8,
cur_size);
if (cur_size > max_size) {
drm_dbg_kms(display->drm,
"fb not big enough for [PLANE:%d:%s] (%d vs %d)\n",
plane->base.base.id, plane->base.name,
cur_size, max_size);
fb = NULL;
break;
}
drm_dbg_kms(display->drm,
"fb big enough [PLANE:%d:%s] (%d >= %d)\n",
plane->base.base.id, plane->base.name,
max_size, cur_size);
}
if (!fb) {
drm_dbg_kms(display->drm,
"BIOS fb not suitable for all pipes, not using\n");
goto out;
}
ifbdev->fb = fb;
drm_framebuffer_get(&ifbdev->fb->base);
/* Final pass to check if any active pipes don't have fbs */
for_each_intel_crtc(display->drm, crtc) {
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
struct intel_plane *plane =
to_intel_plane(crtc->base.primary);
struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
if (!crtc_state->uapi.active)
continue;
drm_WARN(display->drm, !plane_state->uapi.fb,
"re-used BIOS config but lost an fb on [PLANE:%d:%s]\n",
plane->base.base.id, plane->base.name);
}
drm_dbg_kms(display->drm, "using BIOS fb for initial console\n");
return true;
out:
return false;
}
static unsigned int intel_fbdev_color_mode(const struct drm_format_info *info)
{
unsigned int bpp;
if (!info->depth || info->num_planes != 1 || info->has_alpha || info->is_yuv)
return 0;
bpp = drm_format_info_bpp(info, 0);
switch (bpp) {
case 16:
return info->depth; // 15 or 16
default:
return bpp;
}
}
void intel_fbdev_setup(struct intel_display *display)
{
struct intel_fbdev *ifbdev;
unsigned int preferred_bpp = 0;
if (!HAS_DISPLAY(display))
return;
ifbdev = drmm_kzalloc(display->drm, sizeof(*ifbdev), GFP_KERNEL);
if (!ifbdev)
return;
display->fbdev.fbdev = ifbdev;
if (intel_fbdev_init_bios(display, ifbdev))
preferred_bpp = intel_fbdev_color_mode(ifbdev->fb->base.format);
if (!preferred_bpp)
preferred_bpp = 32;
drm_client_setup_with_color_mode(display->drm, preferred_bpp);
}
struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev)
{
if (!fbdev)
return NULL;
return fbdev->fb;
}
struct i915_vma *intel_fbdev_vma_pointer(struct intel_fbdev *fbdev)
{
return fbdev ? fbdev->vma : NULL;
}