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authorThomas Zimmermann <tzimmermann@suse.de>2024-02-12 12:06:16 +0300
committerThomas Zimmermann <tzimmermann@suse.de>2024-02-14 12:09:21 +0300
commit8084a5b589299bd74b114d894e214a2dd4879c96 (patch)
treecb5c81e34e742473a65a2abc281da73efc3f6980 /drivers/video
parent78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371 (diff)
downloadlinux-8084a5b589299bd74b114d894e214a2dd4879c96.tar.xz
fbdev/efifb: Remove framebuffer relocation tracking
If the firmware framebuffer has been reloacted, the sysfb code fixes the screen_info state before it creates the framebuffer's platform device. Efifb will automatically receive a screen_info with updated values. Hence remove the tracking from efifb. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Sui Jingfeng <sui.jingfeng@linux.dev> Link: https://patchwork.freedesktop.org/patch/msgid/20240212090736.11464-9-tzimmermann@suse.de
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/efifb.c76
1 files changed, 1 insertions, 75 deletions
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index f76b7ae00751..8dd82afb3452 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -13,7 +13,6 @@
#include <linux/efi-bgrt.h>
#include <linux/errno.h>
#include <linux/fb.h>
-#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/printk.h>
#include <linux/screen_info.h>
@@ -47,8 +46,6 @@ static bool use_bgrt = true;
static bool request_mem_succeeded = false;
static u64 mem_flags = EFI_MEMORY_WC | EFI_MEMORY_UC;
-static struct pci_dev *efifb_pci_dev; /* dev with BAR covering the efifb */
-
struct efifb_par {
u32 pseudo_palette[16];
resource_size_t base;
@@ -348,9 +345,6 @@ static struct attribute *efifb_attrs[] = {
};
ATTRIBUTE_GROUPS(efifb);
-static struct resource *bar_resource;
-static u64 bar_offset;
-
static int efifb_probe(struct platform_device *dev)
{
struct screen_info *si;
@@ -411,21 +405,7 @@ static int efifb_probe(struct platform_device *dev)
si->rsvd_pos = 24;
}
- efifb_fix.smem_start = si->lfb_base;
-
- if (si->capabilities & VIDEO_CAPABILITY_64BIT_BASE) {
- u64 ext_lfb_base;
-
- ext_lfb_base = (u64)(unsigned long)si->ext_lfb_base << 32;
- efifb_fix.smem_start |= ext_lfb_base;
- }
-
- if (bar_resource &&
- bar_resource->start + bar_offset != efifb_fix.smem_start) {
- dev_info(&efifb_pci_dev->dev,
- "BAR has moved, updating efifb address\n");
- efifb_fix.smem_start = bar_resource->start + bar_offset;
- }
+ efifb_fix.smem_start = __screen_info_lfb_base(si);
efifb_defined.bits_per_pixel = si->lfb_depth;
efifb_defined.xres = si->lfb_width;
@@ -640,57 +620,3 @@ static struct platform_driver efifb_driver = {
};
builtin_platform_driver(efifb_driver);
-
-#if defined(CONFIG_PCI)
-
-static void record_efifb_bar_resource(struct pci_dev *dev, int idx, u64 offset)
-{
- u16 word;
-
- efifb_pci_dev = dev;
-
- pci_read_config_word(dev, PCI_COMMAND, &word);
- if (!(word & PCI_COMMAND_MEMORY)) {
- dev_err(&dev->dev,
- "BAR %d: assigned to efifb but device is disabled!\n",
- idx);
- return;
- }
-
- bar_resource = &dev->resource[idx];
- bar_offset = offset;
-
- dev_info(&dev->dev, "BAR %d: assigned to efifb\n", idx);
-}
-
-static void efifb_fixup_resources(struct pci_dev *dev)
-{
- u64 base = screen_info.lfb_base;
- u64 size = screen_info.lfb_size;
- int i;
-
- if (efifb_pci_dev || screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
- return;
-
- if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE)
- base |= (u64)screen_info.ext_lfb_base << 32;
-
- if (!base)
- return;
-
- for (i = 0; i < PCI_STD_NUM_BARS; i++) {
- struct resource *res = &dev->resource[i];
-
- if (!(res->flags & IORESOURCE_MEM))
- continue;
-
- if (res->start <= base && res->end >= base + size - 1) {
- record_efifb_bar_resource(dev, i, base - res->start);
- break;
- }
- }
-}
-DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY,
- 16, efifb_fixup_resources);
-
-#endif