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intel/display: support larger resolutions

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- fix detection to re-allocate framebuffer
- free up resources on framebuffer switching

Thanks Peter for reporting and fixing.
This commit is contained in:
Alexander Boettcher 2024-01-08 15:58:14 +01:00 committed by Christian Helmuth
parent 25c7204b2a
commit 27c9825bf0
3 changed files with 50 additions and 38 deletions
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26
repos/pc/src/drivers/framebuffer/intel/pc/dummies.c
View File

@ -5,7 +5,7 @@
*/
/*
* Copyright (C) 2021-2022 Genode Labs GmbH
* Copyright (C) 2021-2024 Genode Labs GmbH
*
* This file is distributed under the terms of the GNU General Public License
* version 2.
@ -820,3 +820,27 @@ void devm_pinctrl_put(struct pinctrl * p)
{
lx_emul_trace(__func__);
}
void check_move_unevictable_pages(struct pagevec * pvec)
{
lx_emul_trace(__func__);
}
void intel_gt_flush_ggtt_writes(struct intel_gt * gt)
{
lx_emul_trace(__func__);
}
void intel_gt_invalidate_tlb(struct intel_gt * gt,u32 seqno)
{
lx_emul_trace(__func__);
}
void mark_page_accessed(struct page * page)
{
lx_emul_trace(__func__);
}

30
repos/pc/src/drivers/framebuffer/intel/pc/generated_dummies.c
View File

@ -236,14 +236,6 @@ void bust_spinlocks(int yes)
}
#include <linux/swap.h>
void check_move_unevictable_pages(struct pagevec * pvec)
{
lx_emul_trace_and_stop(__func__);
}
#include <linux/pagemap.h>
bool clear_page_dirty_for_io(struct page * page)
@ -1224,20 +1216,6 @@ void intel_gt_driver_unregister(struct intel_gt * gt)
}
extern void intel_gt_flush_ggtt_writes(struct intel_gt * gt);
void intel_gt_flush_ggtt_writes(struct intel_gt * gt)
{
lx_emul_trace_and_stop(__func__);
}
extern void intel_gt_invalidate_tlb(struct intel_gt * gt,u32 seqno);
void intel_gt_invalidate_tlb(struct intel_gt * gt,u32 seqno)
{
lx_emul_trace_and_stop(__func__);
}
extern u32 intel_gt_mcr_read_any(struct intel_gt * gt,i915_reg_t reg);
u32 intel_gt_mcr_read_any(struct intel_gt * gt,i915_reg_t reg)
{
@ -1586,14 +1564,6 @@ void kmsg_dump(enum kmsg_dump_reason reason)
}
#include <linux/swap.h>
void mark_page_accessed(struct page * page)
{
lx_emul_trace_and_stop(__func__);
}
#include <linux/io.h>
void memunmap(void * addr)

32
repos/pc/src/drivers/framebuffer/intel/pc/lx_user.c
View File

@ -5,7 +5,7 @@
*/
/*
* Copyright (C) 2022-2023 Genode Labs GmbH
* Copyright (C) 2022-2024 Genode Labs GmbH
*
* This file is distributed under the terms of the GNU General Public License
* version 2.
@ -602,13 +602,16 @@ static int fb_client_hotplug(struct drm_client_dev *client)
if (result) {
printk("%s: error on modeset commit %d%s\n", __func__, result,
(result == -ENOSPC) ? " - insufficient amount of RAM for framebuffer" : "");
(result == -ENOSPC) ? " - ENOSPC" : " - unknown error");
}
}
/* notify Genode side */
lx_emul_i915_hotplug_connector(client);
if (fb)
drm_framebuffer_put(fb);
return result;
}
@ -694,8 +697,8 @@ static int user_register_fb(struct drm_client_dev const * const dev,
int result = -EINVAL;
struct i915_gtt_view const view = { .type = I915_GTT_VIEW_NORMAL };
unsigned long flags = 0;
struct i915_vma *vma = NULL;
static struct i915_vma *vma = NULL;
static unsigned long flags = 0;
void __iomem *vaddr = NULL;
struct drm_i915_private *dev_priv = to_i915(dev->dev);
struct drm_framebuffer *fb = drm_framebuffer_lookup(dev->dev,
@ -709,6 +712,13 @@ static int user_register_fb(struct drm_client_dev const * const dev,
wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
if (vma) {
intel_unpin_fb_vma(vma, flags);
vma = NULL;
flags = 0;
}
/* 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.
@ -744,6 +754,9 @@ static int user_register_fb(struct drm_client_dev const * const dev,
register_framebuffer(info);
if (fb)
drm_framebuffer_put(fb);
return 0;
}
@ -762,13 +775,18 @@ static int check_resize_fb(struct drm_client_dev * const dev,
/* if requested size is smaller, free up current dumb buffer */
if (gem_dumb->width && gem_dumb->height &&
gem_dumb->width * gem_dumb->height < width * height) {
(gem_dumb->width < width || gem_dumb->height < height)) {
result = drm_mode_rmfb(dev->dev, dumb_fb->fb_id, dev->file);
if (result) {
drm_err(dev->dev, "%s: failed to remove framebufer %d\n",
__func__, result);
}
result = drm_mode_destroy_dumb(dev->dev, gem_dumb->handle, dev->file);
if (result) {
drm_err(dev->dev, "%s: failed to destroy framebuffer %d\n",
__func__, result);
return result;
}
memset(gem_dumb, 0, sizeof(*gem_dumb));
@ -792,7 +810,7 @@ static int check_resize_fb(struct drm_client_dev * const dev,
}
}
/* bind framwbuffer(GEM object) to drm client */
/* bind framebuffer(GEM object) to drm client */
if (!dumb_fb->width && !dumb_fb->height) {
/* .fb_id <- written by kernel */
dumb_fb->width = gem_dumb->width,