From: Arnd Bergmann <arnd@kernel.org>
To: Thomas Zimmermann <tzimmermann@suse.de>,
linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org
Cc: Arnd Bergmann <arnd@arndb.de>,
"David S. Miller" <davem@davemloft.net>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Ard Biesheuvel <ardb@kernel.org>, Borislav Petkov <bp@alien8.de>,
Brian Cain <bcain@quicinc.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Daniel Vetter <daniel@ffwll.ch>,
Dave Hansen <dave.hansen@linux.intel.com>,
David Airlie <airlied@gmail.com>,
Deepak Rawat <drawat.floss@gmail.com>,
Dexuan Cui <decui@microsoft.com>,
Dinh Nguyen <dinguyen@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Guo Ren <guoren@kernel.org>,
Haiyang Zhang <haiyangz@microsoft.com>,
Helge Deller <deller@gmx.de>, Huacai Chen <chenhuacai@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Javier Martinez Canillas <javierm@redhat.com>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
Khalid Aziz <khalid@gonehiking.org>,
Linus Walleij <linus.walleij@linaro.org>,
Matt Turner <mattst88@gmail.com>,
Max Filippov <jcmvbkbc@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Russell King <linux@armlinux.org.uk>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Thomas Gleixner <tglx@linutronix.de>,
WANG Xuerui <kernel@xen0n.name>, Wei Liu <wei.liu@kernel.org>,
Will Deacon <will@kernel.org>,
x86@kernel.org, linux-alpha@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org,
linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org,
linux-ia64@vger.kernel.org, loongarch@lists.linux.dev,
linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org,
sparclinux@vger.kernel.org, linux-hyperv@vger.kernel.org
Subject: [PATCH v3 6/9] vgacon: clean up global screen_info instances
Date: Mon, 9 Oct 2023 23:18:42 +0200 [thread overview]
Message-ID: <20231009211845.3136536-7-arnd@kernel.org> (raw)
In-Reply-To: <20231009211845.3136536-1-arnd@kernel.org>
From: Arnd Bergmann <arnd@arndb.de>
To prepare for completely separating the VGA console screen_info from
the one used in EFI/sysfb, rename the vgacon instances and make them
local as much as possible.
ia64 and arm both have confurations with vgacon and efi, but the contents
never overlaps because ia64 has no EFI framebuffer, and arm only has
vga console on legacy platforms without EFI. Renaming these is required
before the EFI screen_info can be moved into drivers/firmware.
The ia64 vga console is actually registered in two places from
setup_arch(), but one of them is wrong, so drop the one in pcdp.c and
fix the one in setup.c to use the correct conditional.
x86 has to keep them together, as the boot protocol is used to switch
between VGA text console and framebuffer through the screen_info data.
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Khalid Aziz <khalid@gonehiking.org>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/alpha/kernel/proto.h | 2 ++
arch/alpha/kernel/setup.c | 6 ++--
arch/alpha/kernel/sys_sio.c | 6 ++--
arch/arm/include/asm/setup.h | 5 ++++
arch/arm/kernel/atags_parse.c | 18 ++++++------
arch/arm/kernel/efi.c | 6 ----
arch/arm/kernel/setup.c | 6 ++--
arch/ia64/kernel/setup.c | 49 +++++++++++++++----------------
arch/mips/kernel/setup.c | 11 -------
arch/mips/mti-malta/malta-setup.c | 4 ++-
arch/mips/sibyte/swarm/setup.c | 24 ++++++++-------
arch/mips/sni/setup.c | 16 +++++-----
drivers/firmware/pcdp.c | 1 -
13 files changed, 74 insertions(+), 80 deletions(-)
diff --git a/arch/alpha/kernel/proto.h b/arch/alpha/kernel/proto.h
index 5816a31c1b386..2c89c1c557129 100644
--- a/arch/alpha/kernel/proto.h
+++ b/arch/alpha/kernel/proto.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/interrupt.h>
+#include <linux/screen_info.h>
#include <linux/io.h>
/* Prototypes of functions used across modules here in this directory. */
@@ -113,6 +114,7 @@ extern int boot_cpuid;
#ifdef CONFIG_VERBOSE_MCHECK
extern unsigned long alpha_verbose_mcheck;
#endif
+extern struct screen_info vgacon_screen_info;
/* srmcons.c */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index c004933468606..0738f9396f957 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -138,7 +138,7 @@ static char __initdata command_line[COMMAND_LINE_SIZE];
* code think we're on a VGA color display.
*/
-struct screen_info screen_info = {
+struct screen_info vgacon_screen_info = {
.orig_x = 0,
.orig_y = 25,
.orig_video_cols = 80,
@@ -146,8 +146,6 @@ struct screen_info screen_info = {
.orig_video_isVGA = 1,
.orig_video_points = 16
};
-
-EXPORT_SYMBOL(screen_info);
#endif
/*
@@ -654,7 +652,7 @@ setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- vgacon_register_screen(&screen_info);
+ vgacon_register_screen(&vgacon_screen_info);
#endif
#endif
diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
index 7de8a5d2d2066..086488ed83a7f 100644
--- a/arch/alpha/kernel/sys_sio.c
+++ b/arch/alpha/kernel/sys_sio.c
@@ -60,9 +60,9 @@ alphabook1_init_arch(void)
#ifdef CONFIG_VGA_CONSOLE
/* The AlphaBook1 has LCD video fixed at 800x600,
37 rows and 100 cols. */
- screen_info.orig_y = 37;
- screen_info.orig_video_cols = 100;
- screen_info.orig_video_lines = 37;
+ vgacon_screen_info.orig_y = 37;
+ vgacon_screen_info.orig_video_cols = 100;
+ vgacon_screen_info.orig_video_lines = 37;
#endif
lca_init_arch();
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 546af8b1e3f65..cc106f946c691 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -11,6 +11,7 @@
#ifndef __ASMARM_SETUP_H
#define __ASMARM_SETUP_H
+#include <linux/screen_info.h>
#include <uapi/asm/setup.h>
@@ -35,4 +36,8 @@ void early_mm_init(const struct machine_desc *);
void adjust_lowmem_bounds(void);
void setup_dma_zone(const struct machine_desc *desc);
+#ifdef CONFIG_VGA_CONSOLE
+extern struct screen_info vgacon_screen_info;
+#endif
+
#endif
diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
index 4c815da3b77b0..4ec591bde3dfa 100644
--- a/arch/arm/kernel/atags_parse.c
+++ b/arch/arm/kernel/atags_parse.c
@@ -72,15 +72,15 @@ __tagtable(ATAG_MEM, parse_tag_mem32);
#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
static int __init parse_tag_videotext(const struct tag *tag)
{
- screen_info.orig_x = tag->u.videotext.x;
- screen_info.orig_y = tag->u.videotext.y;
- screen_info.orig_video_page = tag->u.videotext.video_page;
- screen_info.orig_video_mode = tag->u.videotext.video_mode;
- screen_info.orig_video_cols = tag->u.videotext.video_cols;
- screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
- screen_info.orig_video_lines = tag->u.videotext.video_lines;
- screen_info.orig_video_isVGA = tag->u.videotext.video_isvga;
- screen_info.orig_video_points = tag->u.videotext.video_points;
+ vgacon_screen_info.orig_x = tag->u.videotext.x;
+ vgacon_screen_info.orig_y = tag->u.videotext.y;
+ vgacon_screen_info.orig_video_page = tag->u.videotext.video_page;
+ vgacon_screen_info.orig_video_mode = tag->u.videotext.video_mode;
+ vgacon_screen_info.orig_video_cols = tag->u.videotext.video_cols;
+ vgacon_screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
+ vgacon_screen_info.orig_video_lines = tag->u.videotext.video_lines;
+ vgacon_screen_info.orig_video_isVGA = tag->u.videotext.video_isvga;
+ vgacon_screen_info.orig_video_points = tag->u.videotext.video_points;
return 0;
}
diff --git a/arch/arm/kernel/efi.c b/arch/arm/kernel/efi.c
index e94655ef16bb3..6f9ec7d28a710 100644
--- a/arch/arm/kernel/efi.c
+++ b/arch/arm/kernel/efi.c
@@ -123,12 +123,6 @@ void __init arm_efi_init(void)
{
efi_init();
- if (screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) {
- /* dummycon on ARM needs non-zero values for columns/lines */
- screen_info.orig_video_cols = 80;
- screen_info.orig_video_lines = 25;
- }
-
/* ARM does not permit early mappings to persist across paging_init() */
efi_memmap_unmap();
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 67ba140794bf6..c15dfdbe3d5ae 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -928,8 +928,8 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
request_resource(&ioport_resource, &lp2);
}
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_EFI)
-struct screen_info screen_info = {
+#if defined(CONFIG_VGA_CONSOLE)
+static struct screen_info vgacon_screen_info = {
.orig_video_lines = 30,
.orig_video_cols = 80,
.orig_video_mode = 0,
@@ -1197,7 +1197,7 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- vgacon_register_screen(&screen_info);
+ vgacon_register_screen(&vgacon_screen_info);
#endif
#endif
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 2c9283fcd3759..82feae1323f40 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -86,7 +86,8 @@ EXPORT_SYMBOL(local_per_cpu_offset);
#endif
unsigned long ia64_cycles_per_usec;
struct ia64_boot_param *ia64_boot_param;
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_EFI)
+#if defined(CONFIG_EFI)
+/* No longer used on ia64, but needed for linking */
struct screen_info screen_info;
#endif
#ifdef CONFIG_VGA_CONSOLE
@@ -503,8 +504,9 @@ screen_info_setup(void)
{
#ifdef CONFIG_VGA_CONSOLE
unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
+ static struct screen_info si;
- memset(&screen_info, 0, sizeof(screen_info));
+ memset(&si, 0, sizeof(si));
if (!ia64_boot_param->console_info.num_rows ||
!ia64_boot_param->console_info.num_cols) {
@@ -522,14 +524,26 @@ screen_info_setup(void)
font_height = 400 / num_rows;
}
- screen_info.orig_x = orig_x;
- screen_info.orig_y = orig_y;
- screen_info.orig_video_cols = num_cols;
- screen_info.orig_video_lines = num_rows;
- screen_info.orig_video_points = font_height;
- screen_info.orig_video_mode = 3; /* XXX fake */
- screen_info.orig_video_isVGA = 1; /* XXX fake */
- screen_info.orig_video_ega_bx = 3; /* XXX fake */
+ si.orig_x = orig_x;
+ si.orig_y = orig_y;
+ si.orig_video_cols = num_cols;
+ si.orig_video_lines = num_rows;
+ si.orig_video_points = font_height;
+ si.orig_video_mode = 3; /* XXX fake */
+ si.orig_video_isVGA = 1; /* XXX fake */
+ si.orig_video_ega_bx = 3; /* XXX fake */
+
+ if (!conswitchp) {
+ /*
+ * Non-legacy systems may route legacy VGA MMIO range to system
+ * memory. vga_con probes the MMIO hole, so memory looks like
+ * a VGA device to it. The EFI memory map can tell us if it's
+ * memory so we can avoid this problem.
+ */
+ if (efi_mem_type(vga_console_membase + 0xA0000) !=
+ EFI_CONVENTIONAL_MEMORY) {
+ vgacon_register_screen(&si);
+ }
#endif
}
@@ -609,21 +623,6 @@ setup_arch (char **cmdline_p)
cpu_init(); /* initialize the bootstrap CPU */
mmu_context_init(); /* initialize context_id bitmap */
-#ifdef CONFIG_VT
- if (!conswitchp) {
-# if defined(CONFIG_VGA_CONSOLE)
- /*
- * Non-legacy systems may route legacy VGA MMIO range to system
- * memory. vga_con probes the MMIO hole, so memory looks like
- * a VGA device to it. The EFI memory map can tell us if it's
- * memory so we can avoid this problem.
- */
- if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY)
- vgacon_register_screen(&screen_info);
-# endif
- }
-#endif
-
/* enable IA-64 Machine Check Abort Handling unless disabled */
if (!nomca)
ia64_mca_init();
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index c395e2a5a2556..2d2ca024bd47a 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -15,7 +15,6 @@
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/export.h>
-#include <linux/screen_info.h>
#include <linux/memblock.h>
#include <linux/initrd.h>
#include <linux/root_dev.h>
@@ -54,10 +53,6 @@ struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly;
EXPORT_SYMBOL(cpu_data);
-#ifdef CONFIG_VGA_CONSOLE
-struct screen_info screen_info;
-#endif
-
/*
* Setup information
*
@@ -793,12 +788,6 @@ void __init setup_arch(char **cmdline_p)
if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
check_bugs64_early();
-#if defined(CONFIG_VT)
-#if defined(CONFIG_VGA_CONSOLE)
- vgacon_register_screen(&screen_info);
-#endif
-#endif
-
arch_mem_init(cmdline_p);
dmi_setup();
diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c
index 21cb3ac1237b7..3a2836e9d8566 100644
--- a/arch/mips/mti-malta/malta-setup.c
+++ b/arch/mips/mti-malta/malta-setup.c
@@ -161,7 +161,7 @@ static void __init pci_clock_check(void)
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
static void __init screen_info_setup(void)
{
- screen_info = (struct screen_info) {
+ static struct screen_info si = {
.orig_x = 0,
.orig_y = 25,
.ext_mem_k = 0,
@@ -175,6 +175,8 @@ static void __init screen_info_setup(void)
.orig_video_isVGA = VIDEO_TYPE_VGAC,
.orig_video_points = 16
};
+
+ vgacon_register_screen(&si);
}
#endif
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 37df504d3ecbb..74e7c242b6902 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -112,6 +112,19 @@ int update_persistent_clock64(struct timespec64 now)
}
}
+#ifdef CONFIG_VGA_CONSOLE
+static struct screen_info vgacon_screen_info = {
+ .orig_video_page = 52,
+ .orig_video_mode = 3,
+ .orig_video_cols = 80,
+ .flags = 12,
+ .orig_video_ega_bx = 3,
+ .orig_video_lines = 25,
+ .orig_video_isVGA = 0x22,
+ .orig_video_points = 16,
+};
+#endif
+
void __init plat_mem_setup(void)
{
#ifdef CONFIG_SIBYTE_BCM1x80
@@ -130,16 +143,7 @@ void __init plat_mem_setup(void)
swarm_rtc_type = RTC_M41T81;
#ifdef CONFIG_VGA_CONSOLE
- screen_info = (struct screen_info) {
- .orig_video_page = 52,
- .orig_video_mode = 3,
- .orig_video_cols = 80,
- .flags = 12,
- .orig_video_ega_bx = 3,
- .orig_video_lines = 25,
- .orig_video_isVGA = 0x22,
- .orig_video_points = 16,
- };
+ vgacon_register_screen(&vgacon_screen_info);
/* XXXKW for CFE, get lines/cols from environment */
#endif
}
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index 9984cf91be7d0..42fdb939c88d8 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -39,18 +39,20 @@ extern void sni_machine_power_off(void);
static void __init sni_display_setup(void)
{
#if defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
- struct screen_info *si = &screen_info;
+ static struct screen_info si;
DISPLAY_STATUS *di;
di = ArcGetDisplayStatus(1);
if (di) {
- si->orig_x = di->CursorXPosition;
- si->orig_y = di->CursorYPosition;
- si->orig_video_cols = di->CursorMaxXPosition;
- si->orig_video_lines = di->CursorMaxYPosition;
- si->orig_video_isVGA = VIDEO_TYPE_VGAC;
- si->orig_video_points = 16;
+ si.orig_x = di->CursorXPosition;
+ si.orig_y = di->CursorYPosition;
+ si.orig_video_cols = di->CursorMaxXPosition;
+ si.orig_video_lines = di->CursorMaxYPosition;
+ si.orig_video_isVGA = VIDEO_TYPE_VGAC;
+ si.orig_video_points = 16;
+
+ vgacon_register_screen(&si);
}
#endif
}
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 667a595373b2d..876b3e9b37e25 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -72,7 +72,6 @@ setup_vga_console(struct pcdp_device *dev)
return -ENODEV;
}
- vgacon_register_screen(&screen_info);
printk(KERN_INFO "PCDP: VGA console\n");
return 0;
#else
--
2.39.2
next prev parent reply other threads:[~2023-10-09 21:21 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-09 21:18 [PATCH v3 0/9] video: screen_info cleanups Arnd Bergmann
2023-10-09 21:18 ` [PATCH v3 1/9] vgacon: rework Kconfig dependencies Arnd Bergmann
2023-10-10 10:26 ` Geert Uytterhoeven
2023-10-09 21:18 ` [PATCH v3 2/9] vgacon: rework screen_info #ifdef checks Arnd Bergmann
2023-10-09 21:18 ` [PATCH v3 3/9] dummycon: limit Arm console size hack to footbridge Arnd Bergmann
2023-10-09 21:18 ` [PATCH v3 4/9] vgacon, arch/*: remove unused screen_info definitions Arnd Bergmann
2023-10-09 21:18 ` [PATCH v3 5/9] vgacon: remove screen_info dependency Arnd Bergmann
2023-10-09 21:18 ` Arnd Bergmann [this message]
2023-10-09 21:18 ` [PATCH v3 7/9] vga16fb: drop powerpc support Arnd Bergmann
2023-10-09 21:18 ` [PATCH v3 8/9] hyperv: avoid dependency on screen_info Arnd Bergmann
2023-10-09 21:18 ` [PATCH v3 9/9] efi: move screen_info into efi init code Arnd Bergmann
2023-10-10 9:39 ` Catalin Marinas
2023-10-10 11:48 ` [PATCH v3 0/9] video: screen_info cleanups Daniel Vetter
2023-10-10 12:20 ` Greg Kroah-Hartman
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