mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-25 10:19:47 +00:00
![Ville Syrjälä](/assets/img/avatar_default.png)
Our fbdev setup requires the device to be awake for access through the GTT. If one boots without connected displays and later plugs one in, we won't have any runtime PM references when the fbdev setup runs. Explicitly grab a runtime PM reference during the fbdev setup to avoid the following spew: [ 62.518435] RPM wakelock ref not held during HW access [ 62.518459] ------------[ cut here ]------------ [ 62.518546] WARNING: CPU: 3 PID: 37 at ../drivers/gpu/drm/i915/intel_drv.h:1800 i915_vma_pin_iomap+0x144/0x150 [i915] [ 62.518585] Modules linked in: i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm intel_gtt agpgart netconsole nls_iso8859_1 nls_cp437 vfat fat efi_pstore coretemp hwmon intel_rapl x86_pkg_temp_thermal e1000e efivars ptp pps_core video evdev ip_tables x_tables ipv6 autofs4 [ 62.518741] CPU: 3 PID: 37 Comm: kworker/3:1 Not tainted 4.13.0-rc7-skl+ #1077 [ 62.518770] Hardware name: /NUC7i5BNB, BIOS BNKBL357.86A.0048.2017.0704.1415 07/04/2017 [ 62.518827] Workqueue: events i915_hotplug_work_func [i915] [ 62.518853] task: ffff88046c00dc00 task.stack: ffffc90000184000 [ 62.518896] RIP: 0010:i915_vma_pin_iomap+0x144/0x150 [i915] [ 62.518919] RSP: 0018:ffffc90000187cc8 EFLAGS: 00010292 [ 62.518942] RAX: 000000000000002a RBX: ffff880460044000 RCX: 0000000000000006 [ 62.518969] RDX: 0000000000000006 RSI: ffffffff819c3e6f RDI: ffffffff819f1c0e [ 62.518996] RBP: ffffc90000187cd8 R08: ffff88046c00e4f0 R09: 0000000000000000 [ 62.519022] R10: ffff8804669ca800 R11: 0000000000000000 R12: ffff880461d20000 [ 62.519049] R13: ffffc90000187d48 R14: ffff880461d20000 R15: ffff880460044000 [ 62.519076] FS: 0000000000000000(0000) GS:ffff88047ed80000(0000) knlGS:0000000000000000 [ 62.519107] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.519130] CR2: 000056478ae213f0 CR3: 0000000002c0f000 CR4: 00000000003406e0 [ 62.519156] Call Trace: [ 62.519190] intelfb_create+0x176/0x360 [i915] [ 62.519216] __drm_fb_helper_initial_config_and_unlock+0x1c7/0x3c0 [drm_kms_helper] [ 62.519251] drm_fb_helper_hotplug_event.part.18+0xac/0xc0 [drm_kms_helper] [ 62.519282] drm_fb_helper_hotplug_event+0x1a/0x20 [drm_kms_helper] [ 62.519324] intel_fbdev_output_poll_changed+0x1a/0x20 [i915] [ 62.519352] drm_kms_helper_hotplug_event+0x27/0x30 [drm_kms_helper] [ 62.519395] i915_hotplug_work_func+0x24e/0x2b0 [i915] [ 62.519420] process_one_work+0x1d3/0x6d0 [ 62.519440] worker_thread+0x4b/0x400 [ 62.519458] ? schedule+0x4a/0x90 [ 62.519475] ? preempt_count_sub+0x97/0xf0 [ 62.519495] kthread+0x114/0x150 [ 62.519511] ? process_one_work+0x6d0/0x6d0 [ 62.519530] ? kthread_create_on_node+0x40/0x40 [ 62.519551] ret_from_fork+0x27/0x40 [ 62.519569] Code: c4 78 e6 e0 0f ff e9 08 ff ff ff 80 3d d5 bc 0c 00 00 0f 85 0b ff ff ff 48 c7 c7 d8 50 32 a0 c6 05 c1 bc 0c 00 01 e8 9d 78 e6 e0 <0f> ff e9 f1 fe ff ff 0f 1f 44 00 00 0f 1f 44 00 00 0f b6 87 98 [ 62.519771] ---[ end trace 5fbe271f991a58ae ]--- Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170901195456.6386-1-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
820 lines
23 KiB
C
820 lines
23 KiB
C
/*
|
|
* 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/async.h>
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/console.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/string.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/sysrq.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/init.h>
|
|
#include <linux/vga_switcheroo.h>
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
#include "intel_drv.h"
|
|
#include "intel_frontbuffer.h"
|
|
#include <drm/i915_drm.h>
|
|
#include "i915_drv.h"
|
|
|
|
static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev)
|
|
{
|
|
struct drm_i915_gem_object *obj = ifbdev->fb->obj;
|
|
unsigned int origin = ifbdev->vma->fence ? ORIGIN_GTT : ORIGIN_CPU;
|
|
|
|
intel_fb_obj_invalidate(obj, origin);
|
|
}
|
|
|
|
static int intel_fbdev_set_par(struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct intel_fbdev *ifbdev =
|
|
container_of(fb_helper, struct intel_fbdev, helper);
|
|
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 drm_fb_helper *fb_helper = info->par;
|
|
struct intel_fbdev *ifbdev =
|
|
container_of(fb_helper, struct intel_fbdev, helper);
|
|
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 drm_fb_helper *fb_helper = info->par;
|
|
struct intel_fbdev *ifbdev =
|
|
container_of(fb_helper, struct intel_fbdev, helper);
|
|
int ret;
|
|
|
|
ret = drm_fb_helper_pan_display(var, info);
|
|
if (ret == 0)
|
|
intel_fbdev_invalidate(ifbdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct fb_ops intelfb_ops = {
|
|
.owner = THIS_MODULE,
|
|
DRM_FB_HELPER_DEFAULT_OPS,
|
|
.fb_set_par = intel_fbdev_set_par,
|
|
.fb_fillrect = drm_fb_helper_cfb_fillrect,
|
|
.fb_copyarea = drm_fb_helper_cfb_copyarea,
|
|
.fb_imageblit = drm_fb_helper_cfb_imageblit,
|
|
.fb_pan_display = intel_fbdev_pan_display,
|
|
.fb_blank = intel_fbdev_blank,
|
|
};
|
|
|
|
static int intelfb_alloc(struct drm_fb_helper *helper,
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
{
|
|
struct intel_fbdev *ifbdev =
|
|
container_of(helper, struct intel_fbdev, helper);
|
|
struct drm_framebuffer *fb;
|
|
struct drm_device *dev = helper->dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct i915_ggtt *ggtt = &dev_priv->ggtt;
|
|
struct drm_mode_fb_cmd2 mode_cmd = {};
|
|
struct drm_i915_gem_object *obj;
|
|
int size, ret;
|
|
|
|
/* we don't do packed 24bpp */
|
|
if (sizes->surface_bpp == 24)
|
|
sizes->surface_bpp = 32;
|
|
|
|
mode_cmd.width = sizes->surface_width;
|
|
mode_cmd.height = sizes->surface_height;
|
|
|
|
mode_cmd.pitches[0] = ALIGN(mode_cmd.width *
|
|
DIV_ROUND_UP(sizes->surface_bpp, 8), 64);
|
|
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
|
|
sizes->surface_depth);
|
|
|
|
size = mode_cmd.pitches[0] * mode_cmd.height;
|
|
size = PAGE_ALIGN(size);
|
|
|
|
/* If the FB is too big, just don't use it since fbdev is not very
|
|
* important and we should probably use that space with FBC or other
|
|
* features. */
|
|
obj = NULL;
|
|
if (size * 2 < ggtt->stolen_usable_size)
|
|
obj = i915_gem_object_create_stolen(dev_priv, size);
|
|
if (obj == NULL)
|
|
obj = i915_gem_object_create(dev_priv, size);
|
|
if (IS_ERR(obj)) {
|
|
DRM_ERROR("failed to allocate framebuffer\n");
|
|
ret = PTR_ERR(obj);
|
|
goto err;
|
|
}
|
|
|
|
fb = intel_framebuffer_create(obj, &mode_cmd);
|
|
if (IS_ERR(fb)) {
|
|
ret = PTR_ERR(fb);
|
|
goto err_obj;
|
|
}
|
|
|
|
ifbdev->fb = to_intel_framebuffer(fb);
|
|
|
|
return 0;
|
|
|
|
err_obj:
|
|
i915_gem_object_put(obj);
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static int intelfb_create(struct drm_fb_helper *helper,
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
{
|
|
struct intel_fbdev *ifbdev =
|
|
container_of(helper, struct intel_fbdev, helper);
|
|
struct intel_framebuffer *intel_fb = ifbdev->fb;
|
|
struct drm_device *dev = helper->dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct pci_dev *pdev = dev_priv->drm.pdev;
|
|
struct i915_ggtt *ggtt = &dev_priv->ggtt;
|
|
struct fb_info *info;
|
|
struct drm_framebuffer *fb;
|
|
struct i915_vma *vma;
|
|
bool prealloc = false;
|
|
void __iomem *vaddr;
|
|
int ret;
|
|
|
|
if (intel_fb &&
|
|
(sizes->fb_width > intel_fb->base.width ||
|
|
sizes->fb_height > intel_fb->base.height)) {
|
|
DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
|
|
" releasing it\n",
|
|
intel_fb->base.width, intel_fb->base.height,
|
|
sizes->fb_width, sizes->fb_height);
|
|
drm_framebuffer_unreference(&intel_fb->base);
|
|
intel_fb = ifbdev->fb = NULL;
|
|
}
|
|
if (!intel_fb || WARN_ON(!intel_fb->obj)) {
|
|
DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
|
|
ret = intelfb_alloc(helper, sizes);
|
|
if (ret)
|
|
return ret;
|
|
intel_fb = ifbdev->fb;
|
|
} else {
|
|
DRM_DEBUG_KMS("re-using BIOS fb\n");
|
|
prealloc = true;
|
|
sizes->fb_width = intel_fb->base.width;
|
|
sizes->fb_height = intel_fb->base.height;
|
|
}
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
intel_runtime_pm_get(dev_priv);
|
|
|
|
/* 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_pin_and_fence_fb_obj(&ifbdev->fb->base, DRM_MODE_ROTATE_0);
|
|
if (IS_ERR(vma)) {
|
|
ret = PTR_ERR(vma);
|
|
goto out_unlock;
|
|
}
|
|
|
|
info = drm_fb_helper_alloc_fbi(helper);
|
|
if (IS_ERR(info)) {
|
|
DRM_ERROR("Failed to allocate fb_info\n");
|
|
ret = PTR_ERR(info);
|
|
goto out_unpin;
|
|
}
|
|
|
|
info->par = helper;
|
|
|
|
fb = &ifbdev->fb->base;
|
|
|
|
ifbdev->helper.fb = fb;
|
|
|
|
strcpy(info->fix.id, "inteldrmfb");
|
|
|
|
info->fbops = &intelfb_ops;
|
|
|
|
/* setup aperture base/size for vesafb takeover */
|
|
info->apertures->ranges[0].base = dev->mode_config.fb_base;
|
|
info->apertures->ranges[0].size = ggtt->mappable_end;
|
|
|
|
info->fix.smem_start = dev->mode_config.fb_base + i915_ggtt_offset(vma);
|
|
info->fix.smem_len = vma->node.size;
|
|
|
|
vaddr = i915_vma_pin_iomap(vma);
|
|
if (IS_ERR(vaddr)) {
|
|
DRM_ERROR("Failed to remap framebuffer into virtual memory\n");
|
|
ret = PTR_ERR(vaddr);
|
|
goto out_unpin;
|
|
}
|
|
info->screen_base = vaddr;
|
|
info->screen_size = vma->node.size;
|
|
|
|
/* This driver doesn't need a VT switch to restore the mode on resume */
|
|
info->skip_vt_switch = true;
|
|
|
|
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
|
|
drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
|
|
|
|
/* 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_fb->obj->stolen && !prealloc)
|
|
memset_io(info->screen_base, 0, info->screen_size);
|
|
|
|
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
|
|
|
|
DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n",
|
|
fb->width, fb->height, i915_ggtt_offset(vma));
|
|
ifbdev->vma = vma;
|
|
|
|
intel_runtime_pm_put(dev_priv);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
vga_switcheroo_client_fb_set(pdev, info);
|
|
return 0;
|
|
|
|
out_unpin:
|
|
intel_unpin_fb_vma(vma);
|
|
out_unlock:
|
|
intel_runtime_pm_put(dev_priv);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static struct drm_fb_helper_crtc *
|
|
intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++)
|
|
if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
|
|
return &fb_helper->crtc_info[i];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Try to read the BIOS display configuration and use it for the initial
|
|
* fb configuration.
|
|
*
|
|
* The BIOS or boot loader will generally create an initial display
|
|
* configuration for us that includes some set of active pipes and displays.
|
|
* This routine tries to figure out which pipes and connectors are active
|
|
* and stuffs them into the crtcs and modes array given to us by the
|
|
* drm_fb_helper code.
|
|
*
|
|
* The overall sequence is:
|
|
* intel_fbdev_init - from driver load
|
|
* intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
|
|
* drm_fb_helper_init - build fb helper structs
|
|
* drm_fb_helper_single_add_all_connectors - more fb helper structs
|
|
* intel_fbdev_initial_config - apply the config
|
|
* drm_fb_helper_initial_config - call ->probe then register_framebuffer()
|
|
* drm_setup_crtcs - build crtc config for fbdev
|
|
* intel_fb_initial_config - find active connectors etc
|
|
* drm_fb_helper_single_fb_probe - set up fbdev
|
|
* intelfb_create - re-use or alloc fb, build out fbdev structs
|
|
*
|
|
* Note that we don't make special consideration whether we could actually
|
|
* switch to the selected modes without a full modeset. E.g. when the display
|
|
* is in VGA mode we need to recalculate watermarks and set a new high-res
|
|
* framebuffer anyway.
|
|
*/
|
|
static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
|
|
struct drm_fb_helper_crtc **crtcs,
|
|
struct drm_display_mode **modes,
|
|
struct drm_fb_offset *offsets,
|
|
bool *enabled, int width, int height)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(fb_helper->dev);
|
|
unsigned long conn_configured, conn_seq, mask;
|
|
unsigned int count = min(fb_helper->connector_count, BITS_PER_LONG);
|
|
int i, j;
|
|
bool *save_enabled;
|
|
bool fallback = true, ret = true;
|
|
int num_connectors_enabled = 0;
|
|
int num_connectors_detected = 0;
|
|
struct drm_modeset_acquire_ctx ctx;
|
|
|
|
save_enabled = kcalloc(count, sizeof(bool), GFP_KERNEL);
|
|
if (!save_enabled)
|
|
return false;
|
|
|
|
drm_modeset_acquire_init(&ctx, 0);
|
|
|
|
while (drm_modeset_lock_all_ctx(fb_helper->dev, &ctx) != 0)
|
|
drm_modeset_backoff(&ctx);
|
|
|
|
memcpy(save_enabled, enabled, count);
|
|
mask = GENMASK(count - 1, 0);
|
|
conn_configured = 0;
|
|
retry:
|
|
conn_seq = conn_configured;
|
|
for (i = 0; i < count; i++) {
|
|
struct drm_fb_helper_connector *fb_conn;
|
|
struct drm_connector *connector;
|
|
struct drm_encoder *encoder;
|
|
struct drm_fb_helper_crtc *new_crtc;
|
|
|
|
fb_conn = fb_helper->connector_info[i];
|
|
connector = fb_conn->connector;
|
|
|
|
if (conn_configured & BIT(i))
|
|
continue;
|
|
|
|
if (conn_seq == 0 && !connector->has_tile)
|
|
continue;
|
|
|
|
if (connector->status == connector_status_connected)
|
|
num_connectors_detected++;
|
|
|
|
if (!enabled[i]) {
|
|
DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
|
|
connector->name);
|
|
conn_configured |= BIT(i);
|
|
continue;
|
|
}
|
|
|
|
if (connector->force == DRM_FORCE_OFF) {
|
|
DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
|
|
connector->name);
|
|
enabled[i] = false;
|
|
continue;
|
|
}
|
|
|
|
encoder = connector->state->best_encoder;
|
|
if (!encoder || WARN_ON(!connector->state->crtc)) {
|
|
if (connector->force > DRM_FORCE_OFF)
|
|
goto bail;
|
|
|
|
DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
|
|
connector->name);
|
|
enabled[i] = false;
|
|
conn_configured |= BIT(i);
|
|
continue;
|
|
}
|
|
|
|
num_connectors_enabled++;
|
|
|
|
new_crtc = intel_fb_helper_crtc(fb_helper,
|
|
connector->state->crtc);
|
|
|
|
/*
|
|
* Make sure we're not trying to drive multiple connectors
|
|
* with a single CRTC, since our cloning support may not
|
|
* match the BIOS.
|
|
*/
|
|
for (j = 0; j < count; j++) {
|
|
if (crtcs[j] == new_crtc) {
|
|
DRM_DEBUG_KMS("fallback: cloned configuration\n");
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
|
|
connector->name);
|
|
|
|
/* go for command line mode first */
|
|
modes[i] = drm_pick_cmdline_mode(fb_conn);
|
|
|
|
/* try for preferred next */
|
|
if (!modes[i]) {
|
|
DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
|
|
connector->name, connector->has_tile);
|
|
modes[i] = drm_has_preferred_mode(fb_conn, width,
|
|
height);
|
|
}
|
|
|
|
/* No preferred mode marked by the EDID? Are there any modes? */
|
|
if (!modes[i] && !list_empty(&connector->modes)) {
|
|
DRM_DEBUG_KMS("using first mode listed on connector %s\n",
|
|
connector->name);
|
|
modes[i] = list_first_entry(&connector->modes,
|
|
struct drm_display_mode,
|
|
head);
|
|
}
|
|
|
|
/* last resort: use current mode */
|
|
if (!modes[i]) {
|
|
/*
|
|
* IMPORTANT: We want to use the adjusted mode (i.e.
|
|
* after the panel fitter upscaling) as the initial
|
|
* config, not the input mode, which is what crtc->mode
|
|
* usually contains. But since our current
|
|
* code puts a mode derived from the post-pfit timings
|
|
* into crtc->mode this works out correctly.
|
|
*
|
|
* This is crtc->mode and not crtc->state->mode for the
|
|
* fastboot check to work correctly. crtc_state->mode has
|
|
* I915_MODE_FLAG_INHERITED, which we clear to force check
|
|
* state.
|
|
*/
|
|
DRM_DEBUG_KMS("looking for current mode on connector %s\n",
|
|
connector->name);
|
|
modes[i] = &connector->state->crtc->mode;
|
|
}
|
|
crtcs[i] = new_crtc;
|
|
|
|
DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n",
|
|
connector->name,
|
|
connector->state->crtc->base.id,
|
|
connector->state->crtc->name,
|
|
modes[i]->hdisplay, modes[i]->vdisplay,
|
|
modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");
|
|
|
|
fallback = false;
|
|
conn_configured |= BIT(i);
|
|
}
|
|
|
|
if ((conn_configured & mask) != mask && conn_configured != conn_seq)
|
|
goto retry;
|
|
|
|
/*
|
|
* If the BIOS didn't enable everything it could, fall back to have the
|
|
* same user experiencing of lighting up as much as possible like the
|
|
* fbdev helper library.
|
|
*/
|
|
if (num_connectors_enabled != num_connectors_detected &&
|
|
num_connectors_enabled < INTEL_INFO(dev_priv)->num_pipes) {
|
|
DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
|
|
DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,
|
|
num_connectors_detected);
|
|
fallback = true;
|
|
}
|
|
|
|
if (fallback) {
|
|
bail:
|
|
DRM_DEBUG_KMS("Not using firmware configuration\n");
|
|
memcpy(enabled, save_enabled, count);
|
|
ret = false;
|
|
}
|
|
|
|
drm_modeset_drop_locks(&ctx);
|
|
drm_modeset_acquire_fini(&ctx);
|
|
|
|
kfree(save_enabled);
|
|
return ret;
|
|
}
|
|
|
|
static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
|
|
.initial_config = intel_fb_initial_config,
|
|
.fb_probe = intelfb_create,
|
|
};
|
|
|
|
static void intel_fbdev_destroy(struct intel_fbdev *ifbdev)
|
|
{
|
|
/* 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.
|
|
*/
|
|
|
|
drm_fb_helper_fini(&ifbdev->helper);
|
|
|
|
if (ifbdev->vma) {
|
|
mutex_lock(&ifbdev->helper.dev->struct_mutex);
|
|
intel_unpin_fb_vma(ifbdev->vma);
|
|
mutex_unlock(&ifbdev->helper.dev->struct_mutex);
|
|
}
|
|
|
|
if (ifbdev->fb)
|
|
drm_framebuffer_remove(&ifbdev->fb->base);
|
|
|
|
kfree(ifbdev);
|
|
}
|
|
|
|
/*
|
|
* 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 drm_device *dev,
|
|
struct intel_fbdev *ifbdev)
|
|
{
|
|
struct intel_framebuffer *fb = NULL;
|
|
struct drm_crtc *crtc;
|
|
struct intel_crtc *intel_crtc;
|
|
unsigned int max_size = 0;
|
|
|
|
/* Find the largest fb */
|
|
for_each_crtc(dev, crtc) {
|
|
struct drm_i915_gem_object *obj =
|
|
intel_fb_obj(crtc->primary->state->fb);
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
|
|
if (!crtc->state->active || !obj) {
|
|
DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n",
|
|
pipe_name(intel_crtc->pipe));
|
|
continue;
|
|
}
|
|
|
|
if (obj->base.size > max_size) {
|
|
DRM_DEBUG_KMS("found possible fb from plane %c\n",
|
|
pipe_name(intel_crtc->pipe));
|
|
fb = to_intel_framebuffer(crtc->primary->state->fb);
|
|
max_size = obj->base.size;
|
|
}
|
|
}
|
|
|
|
if (!fb) {
|
|
DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n");
|
|
goto out;
|
|
}
|
|
|
|
/* Now make sure all the pipes will fit into it */
|
|
for_each_crtc(dev, crtc) {
|
|
unsigned int cur_size;
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
|
|
if (!crtc->state->active) {
|
|
DRM_DEBUG_KMS("pipe %c not active, skipping\n",
|
|
pipe_name(intel_crtc->pipe));
|
|
continue;
|
|
}
|
|
|
|
DRM_DEBUG_KMS("checking plane %c for BIOS fb\n",
|
|
pipe_name(intel_crtc->pipe));
|
|
|
|
/*
|
|
* 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 = intel_crtc->config->base.adjusted_mode.crtc_hdisplay;
|
|
cur_size = cur_size * fb->base.format->cpp[0];
|
|
if (fb->base.pitches[0] < cur_size) {
|
|
DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n",
|
|
pipe_name(intel_crtc->pipe),
|
|
cur_size, fb->base.pitches[0]);
|
|
fb = NULL;
|
|
break;
|
|
}
|
|
|
|
cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay;
|
|
cur_size = intel_fb_align_height(&fb->base, 0, cur_size);
|
|
cur_size *= fb->base.pitches[0];
|
|
DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
|
|
pipe_name(intel_crtc->pipe),
|
|
intel_crtc->config->base.adjusted_mode.crtc_hdisplay,
|
|
intel_crtc->config->base.adjusted_mode.crtc_vdisplay,
|
|
fb->base.format->cpp[0] * 8,
|
|
cur_size);
|
|
|
|
if (cur_size > max_size) {
|
|
DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n",
|
|
pipe_name(intel_crtc->pipe),
|
|
cur_size, max_size);
|
|
fb = NULL;
|
|
break;
|
|
}
|
|
|
|
DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n",
|
|
pipe_name(intel_crtc->pipe),
|
|
max_size, cur_size);
|
|
}
|
|
|
|
if (!fb) {
|
|
DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n");
|
|
goto out;
|
|
}
|
|
|
|
ifbdev->preferred_bpp = fb->base.format->cpp[0] * 8;
|
|
ifbdev->fb = fb;
|
|
|
|
drm_framebuffer_reference(&ifbdev->fb->base);
|
|
|
|
/* Final pass to check if any active pipes don't have fbs */
|
|
for_each_crtc(dev, crtc) {
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
|
|
if (!crtc->state->active)
|
|
continue;
|
|
|
|
WARN(!crtc->primary->fb,
|
|
"re-used BIOS config but lost an fb on crtc %d\n",
|
|
crtc->base.id);
|
|
}
|
|
|
|
|
|
DRM_DEBUG_KMS("using BIOS fb for initial console\n");
|
|
return true;
|
|
|
|
out:
|
|
|
|
return false;
|
|
}
|
|
|
|
static void intel_fbdev_suspend_worker(struct work_struct *work)
|
|
{
|
|
intel_fbdev_set_suspend(&container_of(work,
|
|
struct drm_i915_private,
|
|
fbdev_suspend_work)->drm,
|
|
FBINFO_STATE_RUNNING,
|
|
true);
|
|
}
|
|
|
|
int intel_fbdev_init(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_fbdev *ifbdev;
|
|
int ret;
|
|
|
|
if (WARN_ON(INTEL_INFO(dev_priv)->num_pipes == 0))
|
|
return -ENODEV;
|
|
|
|
ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
|
|
if (ifbdev == NULL)
|
|
return -ENOMEM;
|
|
|
|
drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs);
|
|
|
|
if (!intel_fbdev_init_bios(dev, ifbdev))
|
|
ifbdev->preferred_bpp = 32;
|
|
|
|
ret = drm_fb_helper_init(dev, &ifbdev->helper, 4);
|
|
if (ret) {
|
|
kfree(ifbdev);
|
|
return ret;
|
|
}
|
|
|
|
dev_priv->fbdev = ifbdev;
|
|
INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker);
|
|
|
|
drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void intel_fbdev_initial_config(void *data, async_cookie_t cookie)
|
|
{
|
|
struct intel_fbdev *ifbdev = data;
|
|
|
|
/* Due to peculiar init order wrt to hpd handling this is separate. */
|
|
if (drm_fb_helper_initial_config(&ifbdev->helper,
|
|
ifbdev->preferred_bpp)) {
|
|
intel_fbdev_unregister(to_i915(ifbdev->helper.dev));
|
|
intel_fbdev_fini(to_i915(ifbdev->helper.dev));
|
|
}
|
|
}
|
|
|
|
void intel_fbdev_initial_config_async(struct drm_device *dev)
|
|
{
|
|
struct intel_fbdev *ifbdev = to_i915(dev)->fbdev;
|
|
|
|
if (!ifbdev)
|
|
return;
|
|
|
|
ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev);
|
|
}
|
|
|
|
static void intel_fbdev_sync(struct intel_fbdev *ifbdev)
|
|
{
|
|
if (!ifbdev->cookie)
|
|
return;
|
|
|
|
/* Only serialises with all preceding async calls, hence +1 */
|
|
async_synchronize_cookie(ifbdev->cookie + 1);
|
|
ifbdev->cookie = 0;
|
|
}
|
|
|
|
void intel_fbdev_unregister(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_fbdev *ifbdev = dev_priv->fbdev;
|
|
|
|
if (!ifbdev)
|
|
return;
|
|
|
|
cancel_work_sync(&dev_priv->fbdev_suspend_work);
|
|
if (!current_is_async())
|
|
intel_fbdev_sync(ifbdev);
|
|
|
|
drm_fb_helper_unregister_fbi(&ifbdev->helper);
|
|
}
|
|
|
|
void intel_fbdev_fini(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_fbdev *ifbdev = fetch_and_zero(&dev_priv->fbdev);
|
|
|
|
if (!ifbdev)
|
|
return;
|
|
|
|
intel_fbdev_destroy(ifbdev);
|
|
}
|
|
|
|
void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_fbdev *ifbdev = dev_priv->fbdev;
|
|
struct fb_info *info;
|
|
|
|
if (!ifbdev || !ifbdev->vma)
|
|
return;
|
|
|
|
info = ifbdev->helper.fbdev;
|
|
|
|
if (synchronous) {
|
|
/* Flush any pending work to turn the console on, and then
|
|
* wait to turn it off. It must be synchronous as we are
|
|
* about to suspend or unload the driver.
|
|
*
|
|
* Note that from within the work-handler, we cannot flush
|
|
* ourselves, so only flush outstanding work upon suspend!
|
|
*/
|
|
if (state != FBINFO_STATE_RUNNING)
|
|
flush_work(&dev_priv->fbdev_suspend_work);
|
|
console_lock();
|
|
} else {
|
|
/*
|
|
* The console lock can be pretty contented on resume due
|
|
* to all the printk activity. Try to keep it out of the hot
|
|
* path of resume if possible.
|
|
*/
|
|
WARN_ON(state != FBINFO_STATE_RUNNING);
|
|
if (!console_trylock()) {
|
|
/* Don't block our own workqueue as this can
|
|
* be run in parallel with other i915.ko tasks.
|
|
*/
|
|
schedule_work(&dev_priv->fbdev_suspend_work);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* On resume from hibernation: If the object is shmemfs backed, it has
|
|
* been restored from swap. If the object is stolen however, it will be
|
|
* full of whatever garbage was left in there.
|
|
*/
|
|
if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen)
|
|
memset_io(info->screen_base, 0, info->screen_size);
|
|
|
|
drm_fb_helper_set_suspend(&ifbdev->helper, state);
|
|
console_unlock();
|
|
}
|
|
|
|
void intel_fbdev_output_poll_changed(struct drm_device *dev)
|
|
{
|
|
struct intel_fbdev *ifbdev = to_i915(dev)->fbdev;
|
|
|
|
if (ifbdev)
|
|
drm_fb_helper_hotplug_event(&ifbdev->helper);
|
|
}
|
|
|
|
void intel_fbdev_restore_mode(struct drm_device *dev)
|
|
{
|
|
struct intel_fbdev *ifbdev = to_i915(dev)->fbdev;
|
|
|
|
if (!ifbdev)
|
|
return;
|
|
|
|
intel_fbdev_sync(ifbdev);
|
|
if (!ifbdev->vma)
|
|
return;
|
|
|
|
if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev->helper) == 0)
|
|
intel_fbdev_invalidate(ifbdev);
|
|
}
|