From 3e3f354bc383a052cde431d8f051efbf896f260b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 20:25:46 +0200 Subject: [PATCH 01/15] ARM: remove ebsa110 platform Russell said that he is no longer using this machine, and it seems that nobody else has in a long time, so it's time to say goodbye to it. As this is the last platform using CONFIG_ARCH_USES_GETTIMEOFFSET, there are some follow-up patches to remove that as well. Acked-by: Russell King Signed-off-by: Arnd Bergmann --- MAINTAINERS | 8 - arch/arm/Kconfig | 24 +- arch/arm/Kconfig.debug | 6 +- arch/arm/Makefile | 8 - arch/arm/configs/ebsa110_defconfig | 74 --- arch/arm/kernel/Makefile | 6 +- arch/arm/mach-ebsa110/Makefile | 8 - arch/arm/mach-ebsa110/Makefile.boot | 5 - arch/arm/mach-ebsa110/core.c | 323 ------------- arch/arm/mach-ebsa110/core.h | 38 -- .../mach-ebsa110/include/mach/entry-macro.S | 33 -- arch/arm/mach-ebsa110/include/mach/hardware.h | 21 - arch/arm/mach-ebsa110/include/mach/io.h | 89 ---- arch/arm/mach-ebsa110/include/mach/irqs.h | 17 - arch/arm/mach-ebsa110/include/mach/memory.h | 22 - .../mach-ebsa110/include/mach/uncompress.h | 41 -- arch/arm/mach-ebsa110/io.c | 440 ------------------ arch/arm/mach-ebsa110/leds.c | 71 --- drivers/watchdog/Kconfig | 2 +- 19 files changed, 7 insertions(+), 1229 deletions(-) delete mode 100644 arch/arm/configs/ebsa110_defconfig delete mode 100644 arch/arm/mach-ebsa110/Makefile delete mode 100644 arch/arm/mach-ebsa110/Makefile.boot delete mode 100644 arch/arm/mach-ebsa110/core.c delete mode 100644 arch/arm/mach-ebsa110/core.h delete mode 100644 arch/arm/mach-ebsa110/include/mach/entry-macro.S delete mode 100644 arch/arm/mach-ebsa110/include/mach/hardware.h delete mode 100644 arch/arm/mach-ebsa110/include/mach/io.h delete mode 100644 arch/arm/mach-ebsa110/include/mach/irqs.h delete mode 100644 arch/arm/mach-ebsa110/include/mach/memory.h delete mode 100644 arch/arm/mach-ebsa110/include/mach/uncompress.h delete mode 100644 arch/arm/mach-ebsa110/io.c delete mode 100644 arch/arm/mach-ebsa110/leds.c diff --git a/MAINTAINERS b/MAINTAINERS index e73636b75f29..12c6a9028ed2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1789,14 +1789,6 @@ F: drivers/firmware/turris-mox-rwtm.c F: drivers/gpio/gpio-moxtet.c F: include/linux/moxtet.h -ARM/EBSA110 MACHINE SUPPORT -M: Russell King -L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) -S: Maintained -W: http://www.armlinux.org.uk/ -F: arch/arm/mach-ebsa110/ -F: drivers/net/ethernet/amd/am79c961a.* - ARM/ENERGY MICRO (SILICON LABS) EFM32 SUPPORT M: Uwe Kleine-König R: Pengutronix Kernel Team diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index fe2f17eb2b50..31391147315d 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -267,8 +267,7 @@ config PHYS_OFFSET hex "Physical address of main memory" if MMU depends on !ARM_PATCH_PHYS_VIRT default DRAM_BASE if !MMU - default 0x00000000 if ARCH_EBSA110 || \ - ARCH_FOOTBRIDGE + default 0x00000000 if ARCH_FOOTBRIDGE default 0x10000000 if ARCH_OMAP1 || ARCH_RPC default 0x20000000 if ARCH_S5PV210 default 0xc0000000 if ARCH_SA1100 @@ -342,20 +341,6 @@ config ARM_SINGLE_ARMV7M select SPARSE_IRQ select USE_OF -config ARCH_EBSA110 - bool "EBSA-110" - select ARCH_USES_GETTIMEOFFSET - select CPU_SA110 - select ISA - select NEED_MACH_IO_H - select NEED_MACH_MEMORY_H - select NO_IOPORT_MAP - help - This is an evaluation board for the StrongARM processor available - from Digital. It has limited hardware on-board, including an - Ethernet interface, two PCMCIA sockets, two serial ports and a - parallel port. - config ARCH_EP93XX bool "EP93xx-based" select ARCH_SPARSEMEM_ENABLE @@ -1371,7 +1356,6 @@ config ARCH_NR_GPIO config HZ_FIXED int - default 200 if ARCH_EBSA110 default 128 if SOC_AT91RM9200 default 0 @@ -1587,9 +1571,7 @@ config FORCE_MAX_ZONEORDER a value of 11 means that the largest free memory block is 2^10 pages. config ALIGNMENT_TRAP - bool - depends on CPU_CP15_MMU - default y if !ARCH_EBSA110 + def_bool CPU_CP15_MMU select HAVE_PROC_CPU if PROC_FS help ARM processors cannot fetch/store information which is not @@ -1784,7 +1766,7 @@ config CMDLINE string "Default kernel command string" default "" help - On some architectures (EBSA110 and CATS), there is currently no way + On some architectures (e.g. CATS), there is currently no way for the boot loader to pass arguments to the kernel. For these architectures, you should supply some command-line options at build time by entering them here. As a minimum, you should specify the diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 8986a91a6f31..4ff04201a8cc 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -1567,7 +1567,7 @@ config DEBUG_SIRFSOC_UART config DEBUG_UART_FLOW_CONTROL bool "Enable flow control (CTS) for the debug UART" depends on DEBUG_LL - default y if ARCH_EBSA110 || DEBUG_FOOTBRIDGE_COM1 || DEBUG_GEMINI || ARCH_RPC + default y if DEBUG_FOOTBRIDGE_COM1 || DEBUG_GEMINI || ARCH_RPC help Some UART ports are connected to terminals that will use modem control signals to indicate whether they are ready to receive text. @@ -1639,7 +1639,7 @@ config DEBUG_UART_PL01X # Compatibility options for 8250 config DEBUG_UART_8250 - def_bool ARCH_EBSA110 || ARCH_IOP32X || ARCH_IXP4XX || ARCH_RPC + def_bool ARCH_IOP32X || ARCH_IXP4XX || ARCH_RPC config DEBUG_UART_PHYS hex "Physical base address of debug UART" @@ -1743,7 +1743,6 @@ config DEBUG_UART_PHYS default 0xe8008000 if DEBUG_R7S72100_SCIF2 || DEBUG_R7S9210_SCIF2 default 0xe8009000 if DEBUG_R7S9210_SCIF4 default 0xf0000000 if DEBUG_DIGICOLOR_UA0 - default 0xf0000be0 if ARCH_EBSA110 default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE default 0xf7fc9000 if DEBUG_BERLIN_UART @@ -1790,7 +1789,6 @@ config DEBUG_UART_VIRT default 0xc8821000 if DEBUG_RV1108_UART1 default 0xc8912000 if DEBUG_RV1108_UART0 default 0xe0010fe0 if ARCH_RPC - default 0xf0000be0 if ARCH_EBSA110 default 0xf0010000 if DEBUG_ASM9260_UART default 0xf0100000 if DEBUG_DIGICOLOR_UA0 default 0xf01fb000 if DEBUG_NOMADIK_UART diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 4d76eab2b22d..64999d94ed1b 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -172,7 +172,6 @@ machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx machine-$(CONFIG_ARCH_DAVINCI) += davinci machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor machine-$(CONFIG_ARCH_DOVE) += dove -machine-$(CONFIG_ARCH_EBSA110) += ebsa110 machine-$(CONFIG_ARCH_EFM32) += efm32 machine-$(CONFIG_ARCH_EP93XX) += ep93xx machine-$(CONFIG_ARCH_EXYNOS) += exynos @@ -239,13 +238,6 @@ plat-$(CONFIG_PLAT_ORION) += orion plat-$(CONFIG_PLAT_PXA) += pxa plat-$(CONFIG_PLAT_VERSATILE) += versatile -ifeq ($(CONFIG_ARCH_EBSA110),y) -# This is what happens if you forget the IOCS16 line. -# PCMCIA cards stop working. -CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL -export CFLAGS_3c589_cs.o -endif - # The byte offset of the kernel image in RAM from the start of RAM. TEXT_OFFSET := $(textofs-y) diff --git a/arch/arm/configs/ebsa110_defconfig b/arch/arm/configs/ebsa110_defconfig deleted file mode 100644 index 731a22a55f4e..000000000000 --- a/arch/arm/configs/ebsa110_defconfig +++ /dev/null @@ -1,74 +0,0 @@ -CONFIG_SYSVIPC=y -CONFIG_BSD_PROCESS_ACCT=y -CONFIG_LOG_BUF_SHIFT=14 -CONFIG_EXPERT=y -CONFIG_MODULES=y -CONFIG_ARCH_EBSA110=y -CONFIG_PCCARD=m -CONFIG_I82365=m -CONFIG_LEDS=y -CONFIG_ZBOOT_ROM_TEXT=0x0 -CONFIG_ZBOOT_ROM_BSS=0x0 -CONFIG_CMDLINE="root=/dev/nfs rw mem=16M console=ttyS1,38400n8" -CONFIG_FPE_NWFPE=y -CONFIG_FPE_FASTFPE=y -CONFIG_BINFMT_AOUT=y -CONFIG_NET=y -CONFIG_PACKET=y -CONFIG_UNIX=y -CONFIG_INET=y -CONFIG_IP_MULTICAST=y -CONFIG_IP_ADVANCED_ROUTER=y -CONFIG_IP_MULTIPLE_TABLES=y -CONFIG_IP_ROUTE_VERBOSE=y -CONFIG_IP_PNP=y -CONFIG_IP_PNP_BOOTP=y -CONFIG_SYN_COOKIES=y -CONFIG_IPV6=y -CONFIG_NETFILTER=y -CONFIG_IP_NF_IPTABLES=y -CONFIG_IP_NF_MATCH_ECN=y -CONFIG_IP_NF_MATCH_TTL=y -CONFIG_IP_NF_FILTER=y -CONFIG_IP_NF_TARGET_REJECT=y -CONFIG_IP_NF_TARGET_LOG=y -CONFIG_IP_NF_MANGLE=y -CONFIG_IP_NF_TARGET_ECN=y -CONFIG_IP6_NF_IPTABLES=y -CONFIG_IP6_NF_MATCH_FRAG=y -CONFIG_IP6_NF_MATCH_OPTS=y -CONFIG_IP6_NF_MATCH_HL=y -CONFIG_IP6_NF_MATCH_RT=y -CONFIG_IP6_NF_FILTER=y -CONFIG_IP6_NF_MANGLE=y -CONFIG_FW_LOADER=m -CONFIG_PARPORT=y -CONFIG_PARPORT_PC=y -CONFIG_PARPORT_PC_FIFO=y -CONFIG_PARPORT_1284=y -CONFIG_BLK_DEV_RAM=y -CONFIG_NETDEVICES=y -CONFIG_NET_ETHERNET=y -CONFIG_ARM_AM79C961A=y -CONFIG_NET_PCMCIA=y -CONFIG_PCMCIA_PCNET=m -CONFIG_PPP=m -CONFIG_PPP_ASYNC=m -CONFIG_PPP_DEFLATE=m -CONFIG_PPP_BSDCOMP=m -# CONFIG_INPUT is not set -# CONFIG_SERIO is not set -# CONFIG_VT is not set -CONFIG_SERIAL_8250=y -CONFIG_SERIAL_8250_CONSOLE=y -CONFIG_SERIAL_8250_CS=m -CONFIG_PRINTER=m -CONFIG_WATCHDOG=y -CONFIG_SOFT_WATCHDOG=y -CONFIG_AUTOFS4_FS=y -CONFIG_MINIX_FS=y -CONFIG_NFS_FS=y -CONFIG_NFS_V3=y -CONFIG_ROOT_NFS=y -CONFIG_PARTITION_ADVANCED=y -# CONFIG_MSDOS_PARTITION is not set diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 89e5d864e923..09e67cb02b20 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -17,7 +17,7 @@ CFLAGS_REMOVE_return_address.o = -pg # Object file lists. obj-y := elf.o entry-common.o irq.o opcodes.o \ - process.o ptrace.o reboot.o \ + process.o ptrace.o reboot.o io.o \ setup.o signal.o sigreturn_codes.o \ stacktrace.o sys_arm.o time.o traps.o @@ -83,10 +83,6 @@ AFLAGS_iwmmxt.o := -Wa,-mcpu=iwmmxt obj-$(CONFIG_ARM_CPU_TOPOLOGY) += topology.o obj-$(CONFIG_VDSO) += vdso.o obj-$(CONFIG_EFI) += efi.o - -ifneq ($(CONFIG_ARCH_EBSA110),y) - obj-y += io.o -endif obj-$(CONFIG_PARAVIRT) += paravirt.o head-y := head$(MMUEXT).o diff --git a/arch/arm/mach-ebsa110/Makefile b/arch/arm/mach-ebsa110/Makefile deleted file mode 100644 index 296541315d25..000000000000 --- a/arch/arm/mach-ebsa110/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -# -# Makefile for the linux kernel. -# - -# Object file lists. - -obj-y := core.o io.o leds.o diff --git a/arch/arm/mach-ebsa110/Makefile.boot b/arch/arm/mach-ebsa110/Makefile.boot deleted file mode 100644 index e7e98937c71b..000000000000 --- a/arch/arm/mach-ebsa110/Makefile.boot +++ /dev/null @@ -1,5 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only - zreladdr-y += 0x00008000 -params_phys-y := 0x00000400 -initrd_phys-y := 0x00800000 - diff --git a/arch/arm/mach-ebsa110/core.c b/arch/arm/mach-ebsa110/core.c deleted file mode 100644 index 5960e3dfd2bf..000000000000 --- a/arch/arm/mach-ebsa110/core.c +++ /dev/null @@ -1,323 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * linux/arch/arm/mach-ebsa110/core.c - * - * Copyright (C) 1998-2001 Russell King - * - * Extra MM routines for the EBSA-110 architecture - */ -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include - -#include "core.h" - -static void ebsa110_mask_irq(struct irq_data *d) -{ - __raw_writeb(1 << d->irq, IRQ_MCLR); -} - -static void ebsa110_unmask_irq(struct irq_data *d) -{ - __raw_writeb(1 << d->irq, IRQ_MSET); -} - -static struct irq_chip ebsa110_irq_chip = { - .irq_ack = ebsa110_mask_irq, - .irq_mask = ebsa110_mask_irq, - .irq_unmask = ebsa110_unmask_irq, -}; - -static void __init ebsa110_init_irq(void) -{ - unsigned long flags; - unsigned int irq; - - local_irq_save(flags); - __raw_writeb(0xff, IRQ_MCLR); - __raw_writeb(0x55, IRQ_MSET); - __raw_writeb(0x00, IRQ_MSET); - if (__raw_readb(IRQ_MASK) != 0x55) - while (1); - __raw_writeb(0xff, IRQ_MCLR); /* clear all interrupt enables */ - local_irq_restore(flags); - - for (irq = 0; irq < NR_IRQS; irq++) { - irq_set_chip_and_handler(irq, &ebsa110_irq_chip, - handle_level_irq); - irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE); - } -} - -static struct map_desc ebsa110_io_desc[] __initdata = { - /* - * sparse external-decode ISAIO space - */ - { /* IRQ_STAT/IRQ_MCLR */ - .virtual = (unsigned long)IRQ_STAT, - .pfn = __phys_to_pfn(TRICK4_PHYS), - .length = TRICK4_SIZE, - .type = MT_DEVICE - }, { /* IRQ_MASK/IRQ_MSET */ - .virtual = (unsigned long)IRQ_MASK, - .pfn = __phys_to_pfn(TRICK3_PHYS), - .length = TRICK3_SIZE, - .type = MT_DEVICE - }, { /* SOFT_BASE */ - .virtual = (unsigned long)SOFT_BASE, - .pfn = __phys_to_pfn(TRICK1_PHYS), - .length = TRICK1_SIZE, - .type = MT_DEVICE - }, { /* PIT_BASE */ - .virtual = (unsigned long)PIT_BASE, - .pfn = __phys_to_pfn(TRICK0_PHYS), - .length = TRICK0_SIZE, - .type = MT_DEVICE - }, - - /* - * self-decode ISAIO space - */ - { - .virtual = ISAIO_BASE, - .pfn = __phys_to_pfn(ISAIO_PHYS), - .length = ISAIO_SIZE, - .type = MT_DEVICE - }, { - .virtual = ISAMEM_BASE, - .pfn = __phys_to_pfn(ISAMEM_PHYS), - .length = ISAMEM_SIZE, - .type = MT_DEVICE - } -}; - -static void __init ebsa110_map_io(void) -{ - iotable_init(ebsa110_io_desc, ARRAY_SIZE(ebsa110_io_desc)); -} - -static void __iomem *ebsa110_ioremap_caller(phys_addr_t cookie, size_t size, - unsigned int flags, void *caller) -{ - return (void __iomem *)cookie; -} - -static void ebsa110_iounmap(volatile void __iomem *io_addr) -{} - -static void __init ebsa110_init_early(void) -{ - arch_ioremap_caller = ebsa110_ioremap_caller; - arch_iounmap = ebsa110_iounmap; -} - -#define PIT_CTRL (PIT_BASE + 0x0d) -#define PIT_T2 (PIT_BASE + 0x09) -#define PIT_T1 (PIT_BASE + 0x05) -#define PIT_T0 (PIT_BASE + 0x01) - -/* - * This is the rate at which your MCLK signal toggles (in Hz) - * This was measured on a 10 digit frequency counter sampling - * over 1 second. - */ -#define MCLK 47894000 - -/* - * This is the rate at which the PIT timers get clocked - */ -#define CLKBY7 (MCLK / 7) - -/* - * This is the counter value. We tick at 200Hz on this platform. - */ -#define COUNT ((CLKBY7 + (HZ / 2)) / HZ) - -/* - * Get the time offset from the system PIT. Note that if we have missed an - * interrupt, then the PIT counter will roll over (ie, be negative). - * This actually works out to be convenient. - */ -static u32 ebsa110_gettimeoffset(void) -{ - unsigned long offset, count; - - __raw_writeb(0x40, PIT_CTRL); - count = __raw_readb(PIT_T1); - count |= __raw_readb(PIT_T1) << 8; - - /* - * If count > COUNT, make the number negative. - */ - if (count > COUNT) - count |= 0xffff0000; - - offset = COUNT; - offset -= count; - - /* - * `offset' is in units of timer counts. Convert - * offset to units of microseconds. - */ - offset = offset * (1000000 / HZ) / COUNT; - - return offset * 1000; -} - -static irqreturn_t -ebsa110_timer_interrupt(int irq, void *dev_id) -{ - u32 count; - - /* latch and read timer 1 */ - __raw_writeb(0x40, PIT_CTRL); - count = __raw_readb(PIT_T1); - count |= __raw_readb(PIT_T1) << 8; - - count += COUNT; - - __raw_writeb(count & 0xff, PIT_T1); - __raw_writeb(count >> 8, PIT_T1); - - timer_tick(); - - return IRQ_HANDLED; -} - -/* - * Set up timer interrupt. - */ -void __init ebsa110_timer_init(void) -{ - int irq = IRQ_EBSA110_TIMER0; - - arch_gettimeoffset = ebsa110_gettimeoffset; - - /* - * Timer 1, mode 2, LSB/MSB - */ - __raw_writeb(0x70, PIT_CTRL); - __raw_writeb(COUNT & 0xff, PIT_T1); - __raw_writeb(COUNT >> 8, PIT_T1); - - if (request_irq(irq, ebsa110_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, - "EBSA110 Timer Tick", NULL)) - pr_err("Failed to request irq %d (EBSA110 Timer Tick)\n", irq); -} - -static struct plat_serial8250_port serial_platform_data[] = { - { - .iobase = 0x3f8, - .irq = 1, - .uartclk = 1843200, - .regshift = 0, - .iotype = UPIO_PORT, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, - }, - { - .iobase = 0x2f8, - .irq = 2, - .uartclk = 1843200, - .regshift = 0, - .iotype = UPIO_PORT, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, - }, - { }, -}; - -static struct platform_device serial_device = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM, - .dev = { - .platform_data = serial_platform_data, - }, -}; - -static struct resource am79c961_resources[] = { - { - .start = 0x220, - .end = 0x238, - .flags = IORESOURCE_IO, - }, { - .start = IRQ_EBSA110_ETHERNET, - .end = IRQ_EBSA110_ETHERNET, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct platform_device am79c961_device = { - .name = "am79c961", - .id = -1, - .num_resources = ARRAY_SIZE(am79c961_resources), - .resource = am79c961_resources, -}; - -static struct platform_device *ebsa110_devices[] = { - &serial_device, - &am79c961_device, -}; - -/* - * EBSA110 idling methodology: - * - * We can not execute the "wait for interrupt" instruction since that - * will stop our MCLK signal (which provides the clock for the glue - * logic, and therefore the timer interrupt). - * - * Instead, we spin, polling the IRQ_STAT register for the occurrence - * of any interrupt with core clock down to the memory clock. - */ -static void ebsa110_idle(void) -{ - const char *irq_stat = (char *)0xff000000; - - /* disable clock switching */ - asm volatile ("mcr p15, 0, ip, c15, c2, 2" : : : "cc"); - - /* wait for an interrupt to occur */ - while (!*irq_stat); - - /* enable clock switching */ - asm volatile ("mcr p15, 0, ip, c15, c1, 2" : : : "cc"); -} - -static int __init ebsa110_init(void) -{ - arm_pm_idle = ebsa110_idle; - return platform_add_devices(ebsa110_devices, ARRAY_SIZE(ebsa110_devices)); -} - -arch_initcall(ebsa110_init); - -static void ebsa110_restart(enum reboot_mode mode, const char *cmd) -{ - soft_restart(0x80000000); -} - -MACHINE_START(EBSA110, "EBSA110") - /* Maintainer: Russell King */ - .atag_offset = 0x400, - .reserve_lp0 = 1, - .reserve_lp2 = 1, - .map_io = ebsa110_map_io, - .init_early = ebsa110_init_early, - .init_irq = ebsa110_init_irq, - .init_time = ebsa110_timer_init, - .restart = ebsa110_restart, -MACHINE_END diff --git a/arch/arm/mach-ebsa110/core.h b/arch/arm/mach-ebsa110/core.h deleted file mode 100644 index 47acc610b6b4..000000000000 --- a/arch/arm/mach-ebsa110/core.h +++ /dev/null @@ -1,38 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) 1996-2000 Russell King. - * - * This file contains the core hardware definitions of the EBSA-110. - */ -#ifndef CORE_H -#define CORE_H - -/* Physical addresses/sizes */ -#define ISAMEM_PHYS 0xe0000000 -#define ISAMEM_SIZE 0x10000000 - -#define ISAIO_PHYS 0xf0000000 -#define ISAIO_SIZE PGDIR_SIZE - -#define TRICK0_PHYS 0xf2000000 -#define TRICK0_SIZE PGDIR_SIZE -#define TRICK1_PHYS 0xf2400000 -#define TRICK1_SIZE PGDIR_SIZE -#define TRICK2_PHYS 0xf2800000 -#define TRICK3_PHYS 0xf2c00000 -#define TRICK3_SIZE PGDIR_SIZE -#define TRICK4_PHYS 0xf3000000 -#define TRICK4_SIZE PGDIR_SIZE -#define TRICK5_PHYS 0xf3400000 -#define TRICK6_PHYS 0xf3800000 -#define TRICK7_PHYS 0xf3c00000 - -/* Virtual addresses */ -#define PIT_BASE IOMEM(0xfc000000) /* trick 0 */ -#define SOFT_BASE IOMEM(0xfd000000) /* trick 1 */ -#define IRQ_MASK IOMEM(0xfe000000) /* trick 3 - read */ -#define IRQ_MSET IOMEM(0xfe000000) /* trick 3 - write */ -#define IRQ_STAT IOMEM(0xff000000) /* trick 4 - read */ -#define IRQ_MCLR IOMEM(0xff000000) /* trick 4 - write */ - -#endif diff --git a/arch/arm/mach-ebsa110/include/mach/entry-macro.S b/arch/arm/mach-ebsa110/include/mach/entry-macro.S deleted file mode 100644 index 14b110de78a9..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/entry-macro.S +++ /dev/null @@ -1,33 +0,0 @@ -/* - * arch/arm/mach-ebsa110/include/mach/entry-macro.S - * - * Low-level IRQ helper macros for ebsa110 platform. - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - - - -#define IRQ_STAT 0xff000000 /* read */ - - .macro get_irqnr_preamble, base, tmp - mov \base, #IRQ_STAT - .endm - - .macro get_irqnr_and_base, irqnr, stat, base, tmp - ldrb \stat, [\base] @ get interrupts - mov \irqnr, #0 - tst \stat, #15 - addeq \irqnr, \irqnr, #4 - moveq \stat, \stat, lsr #4 - tst \stat, #3 - addeq \irqnr, \irqnr, #2 - moveq \stat, \stat, lsr #2 - tst \stat, #1 - addeq \irqnr, \irqnr, #1 - moveq \stat, \stat, lsr #1 - tst \stat, #1 @ bit 0 should be set - .endm - diff --git a/arch/arm/mach-ebsa110/include/mach/hardware.h b/arch/arm/mach-ebsa110/include/mach/hardware.h deleted file mode 100644 index 81f6967683f6..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/hardware.h +++ /dev/null @@ -1,21 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * arch/arm/mach-ebsa110/include/mach/hardware.h - * - * Copyright (C) 1996-2000 Russell King. - * - * This file contains the hardware definitions of the EBSA-110. - */ -#ifndef __ASM_ARCH_HARDWARE_H -#define __ASM_ARCH_HARDWARE_H - -#define ISAMEM_BASE 0xe0000000 -#define ISAIO_BASE 0xf0000000 - -/* - * RAM definitions - */ -#define UNCACHEABLE_ADDR 0xff000000 /* IRQ_STAT */ - -#endif - diff --git a/arch/arm/mach-ebsa110/include/mach/io.h b/arch/arm/mach-ebsa110/include/mach/io.h deleted file mode 100644 index ad170886c9aa..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/io.h +++ /dev/null @@ -1,89 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * arch/arm/mach-ebsa110/include/mach/io.h - * - * Copyright (C) 1997,1998 Russell King - * - * Modifications: - * 06-Dec-1997 RMK Created. - */ -#ifndef __ASM_ARM_ARCH_IO_H -#define __ASM_ARM_ARCH_IO_H - -u8 __inb8(unsigned int port); -void __outb8(u8 val, unsigned int port); - -u8 __inb16(unsigned int port); -void __outb16(u8 val, unsigned int port); - -u16 __inw(unsigned int port); -void __outw(u16 val, unsigned int port); - -u32 __inl(unsigned int port); -void __outl(u32 val, unsigned int port); - -u8 __readb(const volatile void __iomem *addr); -u16 __readw(const volatile void __iomem *addr); -u32 __readl(const volatile void __iomem *addr); - -void __writeb(u8 val, volatile void __iomem *addr); -void __writew(u16 val, volatile void __iomem *addr); -void __writel(u32 val, volatile void __iomem *addr); - -/* - * Argh, someone forgot the IOCS16 line. We therefore have to handle - * the byte stearing by selecting the correct byte IO functions here. - */ -#ifdef ISA_SIXTEEN_BIT_PERIPHERAL -#define inb(p) __inb16(p) -#define outb(v,p) __outb16(v,p) -#else -#define inb(p) __inb8(p) -#define outb(v,p) __outb8(v,p) -#endif - -#define inw(p) __inw(p) -#define outw(v,p) __outw(v,p) - -#define inl(p) __inl(p) -#define outl(v,p) __outl(v,p) - -#define readb(b) __readb(b) -#define readw(b) __readw(b) -#define readl(b) __readl(b) -#define readb_relaxed(addr) readb(addr) -#define readw_relaxed(addr) readw(addr) -#define readl_relaxed(addr) readl(addr) - -#define writeb(v,b) __writeb(v,b) -#define writew(v,b) __writew(v,b) -#define writel(v,b) __writel(v,b) - -#define insb insb -extern void insb(unsigned int port, void *buf, int sz); -#define insw insw -extern void insw(unsigned int port, void *buf, int sz); -#define insl insl -extern void insl(unsigned int port, void *buf, int sz); - -#define outsb outsb -extern void outsb(unsigned int port, const void *buf, int sz); -#define outsw outsw -extern void outsw(unsigned int port, const void *buf, int sz); -#define outsl outsl -extern void outsl(unsigned int port, const void *buf, int sz); - -/* can't support writesb atm */ -#define writesw writesw -extern void writesw(volatile void __iomem *addr, const void *data, int wordlen); -#define writesl writesl -extern void writesl(volatile void __iomem *addr, const void *data, int longlen); - -/* can't support readsb atm */ -#define readsw readsw -extern void readsw(const volatile void __iomem *addr, void *data, int wordlen); - -#define readsl readsl -extern void readsl(const volatile void __iomem *addr, void *data, int longlen); - -#endif diff --git a/arch/arm/mach-ebsa110/include/mach/irqs.h b/arch/arm/mach-ebsa110/include/mach/irqs.h deleted file mode 100644 index 29a8671fe849..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/irqs.h +++ /dev/null @@ -1,17 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * arch/arm/mach-ebsa110/include/mach/irqs.h - * - * Copyright (C) 1996 Russell King - */ - -#define NR_IRQS 8 - -#define IRQ_EBSA110_PRINTER 0 -#define IRQ_EBSA110_COM1 1 -#define IRQ_EBSA110_COM2 2 -#define IRQ_EBSA110_ETHERNET 3 -#define IRQ_EBSA110_TIMER0 4 -#define IRQ_EBSA110_TIMER1 5 -#define IRQ_EBSA110_PCMCIA 6 -#define IRQ_EBSA110_IMMEDIATE 7 diff --git a/arch/arm/mach-ebsa110/include/mach/memory.h b/arch/arm/mach-ebsa110/include/mach/memory.h deleted file mode 100644 index f025f405de50..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/memory.h +++ /dev/null @@ -1,22 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * arch/arm/mach-ebsa110/include/mach/memory.h - * - * Copyright (C) 1996-1999 Russell King. - * - * Changelog: - * 20-Oct-1996 RMK Created - * 31-Dec-1997 RMK Fixed definitions to reduce warnings - * 21-Mar-1999 RMK Renamed to memory.h - * RMK Moved TASK_SIZE and PAGE_OFFSET here - */ -#ifndef __ASM_ARCH_MEMORY_H -#define __ASM_ARCH_MEMORY_H - -/* - * Cache flushing area - SRAM - */ -#define FLUSH_BASE_PHYS 0x40000000 -#define FLUSH_BASE 0xdf000000 - -#endif diff --git a/arch/arm/mach-ebsa110/include/mach/uncompress.h b/arch/arm/mach-ebsa110/include/mach/uncompress.h deleted file mode 100644 index 3ec12efe98a6..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/uncompress.h +++ /dev/null @@ -1,41 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * arch/arm/mach-ebsa110/include/mach/uncompress.h - * - * Copyright (C) 1996,1997,1998 Russell King - */ - -#include - -#define SERIAL_BASE ((unsigned char *)0xf0000be0) - -/* - * This does not append a newline - */ -static inline void putc(int c) -{ - unsigned char v, *base = SERIAL_BASE; - - do { - v = base[UART_LSR << 2]; - barrier(); - } while (!(v & UART_LSR_THRE)); - - base[UART_TX << 2] = c; -} - -static inline void flush(void) -{ - unsigned char v, *base = SERIAL_BASE; - - do { - v = base[UART_LSR << 2]; - barrier(); - } while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) != - (UART_LSR_TEMT|UART_LSR_THRE)); -} - -/* - * nothing to do - */ -#define arch_decomp_setup() diff --git a/arch/arm/mach-ebsa110/io.c b/arch/arm/mach-ebsa110/io.c deleted file mode 100644 index 3c44dd3596ea..000000000000 --- a/arch/arm/mach-ebsa110/io.c +++ /dev/null @@ -1,440 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/arm/mach-ebsa110/isamem.c - * - * Copyright (C) 2001 Russell King - * - * Perform "ISA" memory and IO accesses. The EBSA110 has some "peculiarities" - * in the way it handles accesses to odd IO ports on 16-bit devices. These - * devices have their D0-D15 lines connected to the processors D0-D15 lines. - * Since they expect all byte IO operations to be performed on D0-D7, and the - * StrongARM expects to transfer the byte to these odd addresses on D8-D15, - * we must use a trick to get the required behaviour. - * - * The trick employed here is to use long word stores to odd address -1. The - * glue logic picks this up as a "trick" access, and asserts the LSB of the - * peripherals address bus, thereby accessing the odd IO port. Meanwhile, the - * StrongARM transfers its data on D0-D7 as expected. - * - * Things get more interesting on the pass-1 EBSA110 - the PCMCIA controller - * wiring was screwed in such a way that it had limited memory space access. - * Luckily, the work-around for this is not too horrible. See - * __isamem_convert_addr for the details. - */ -#include -#include -#include -#include - -#include -#include - -static void __iomem *__isamem_convert_addr(const volatile void __iomem *addr) -{ - u32 ret, a = (u32 __force) addr; - - /* - * The PCMCIA controller is wired up as follows: - * +---------+---------+---------+---------+---------+---------+ - * PCMCIA | 2 2 2 2 | 1 1 1 1 | 1 1 1 1 | 1 1 | | | - * | 3 2 1 0 | 9 8 7 6 | 5 4 3 2 | 1 0 9 8 | 7 6 5 4 | 3 2 1 0 | - * +---------+---------+---------+---------+---------+---------+ - * CPU | 2 2 2 2 | 2 1 1 1 | 1 1 1 1 | 1 1 1 | | | - * | 4 3 2 1 | 0 9 9 8 | 7 6 5 4 | 3 2 0 9 | 8 7 6 5 | 4 3 2 x | - * +---------+---------+---------+---------+---------+---------+ - * - * This means that we can access PCMCIA regions as follows: - * 0x*10000 -> 0x*1ffff - * 0x*70000 -> 0x*7ffff - * 0x*90000 -> 0x*9ffff - * 0x*f0000 -> 0x*fffff - */ - ret = (a & 0xf803fe) << 1; - ret |= (a & 0x03fc00) << 2; - - ret += 0xe8000000; - - if ((a & 0x20000) == (a & 0x40000) >> 1) - return (void __iomem *)ret; - - BUG(); - return NULL; -} - -/* - * read[bwl] and write[bwl] - */ -u8 __readb(const volatile void __iomem *addr) -{ - void __iomem *a = __isamem_convert_addr(addr); - u32 ret; - - if ((unsigned long)addr & 1) - ret = __raw_readl(a); - else - ret = __raw_readb(a); - return ret; -} - -u16 __readw(const volatile void __iomem *addr) -{ - void __iomem *a = __isamem_convert_addr(addr); - - if ((unsigned long)addr & 1) - BUG(); - - return __raw_readw(a); -} - -u32 __readl(const volatile void __iomem *addr) -{ - void __iomem *a = __isamem_convert_addr(addr); - u32 ret; - - if ((unsigned long)addr & 3) - BUG(); - - ret = __raw_readw(a); - ret |= __raw_readw(a + 4) << 16; - return ret; -} - -EXPORT_SYMBOL(__readb); -EXPORT_SYMBOL(__readw); -EXPORT_SYMBOL(__readl); - -void readsw(const volatile void __iomem *addr, void *data, int len) -{ - void __iomem *a = __isamem_convert_addr(addr); - - BUG_ON((unsigned long)addr & 1); - - __raw_readsw(a, data, len); -} -EXPORT_SYMBOL(readsw); - -void readsl(const volatile void __iomem *addr, void *data, int len) -{ - void __iomem *a = __isamem_convert_addr(addr); - - BUG_ON((unsigned long)addr & 3); - - __raw_readsl(a, data, len); -} -EXPORT_SYMBOL(readsl); - -void __writeb(u8 val, volatile void __iomem *addr) -{ - void __iomem *a = __isamem_convert_addr(addr); - - if ((unsigned long)addr & 1) - __raw_writel(val, a); - else - __raw_writeb(val, a); -} - -void __writew(u16 val, volatile void __iomem *addr) -{ - void __iomem *a = __isamem_convert_addr(addr); - - if ((unsigned long)addr & 1) - BUG(); - - __raw_writew(val, a); -} - -void __writel(u32 val, volatile void __iomem *addr) -{ - void __iomem *a = __isamem_convert_addr(addr); - - if ((unsigned long)addr & 3) - BUG(); - - __raw_writew(val, a); - __raw_writew(val >> 16, a + 4); -} - -EXPORT_SYMBOL(__writeb); -EXPORT_SYMBOL(__writew); -EXPORT_SYMBOL(__writel); - -void writesw(volatile void __iomem *addr, const void *data, int len) -{ - void __iomem *a = __isamem_convert_addr(addr); - - BUG_ON((unsigned long)addr & 1); - - __raw_writesw(a, data, len); -} -EXPORT_SYMBOL(writesw); - -void writesl(volatile void __iomem *addr, const void *data, int len) -{ - void __iomem *a = __isamem_convert_addr(addr); - - BUG_ON((unsigned long)addr & 3); - - __raw_writesl(a, data, len); -} -EXPORT_SYMBOL(writesl); - -/* - * The EBSA110 has a weird "ISA IO" region: - * - * Region 0 (addr = 0xf0000000 + io << 2) - * -------------------------------------------------------- - * Physical region IO region - * f0000fe0 - f0000ffc 3f8 - 3ff ttyS0 - * f0000e60 - f0000e64 398 - 399 - * f0000de0 - f0000dfc 378 - 37f lp0 - * f0000be0 - f0000bfc 2f8 - 2ff ttyS1 - * - * Region 1 (addr = 0xf0000000 + (io & ~1) << 1 + (io & 1)) - * -------------------------------------------------------- - * Physical region IO region - * f00014f1 a79 pnp write data - * f00007c0 - f00007c1 3e0 - 3e1 pcmcia - * f00004f1 279 pnp address - * f0000440 - f000046c 220 - 236 eth0 - * f0000405 203 pnp read data - */ -#define SUPERIO_PORT(p) \ - (((p) >> 3) == (0x3f8 >> 3) || \ - ((p) >> 3) == (0x2f8 >> 3) || \ - ((p) >> 3) == (0x378 >> 3)) - -/* - * We're addressing an 8 or 16-bit peripheral which tranfers - * odd addresses on the low ISA byte lane. - */ -u8 __inb8(unsigned int port) -{ - u32 ret; - - /* - * The SuperIO registers use sane addressing techniques... - */ - if (SUPERIO_PORT(port)) - ret = __raw_readb((void __iomem *)ISAIO_BASE + (port << 2)); - else { - void __iomem *a = (void __iomem *)ISAIO_BASE + ((port & ~1) << 1); - - /* - * Shame nothing else does - */ - if (port & 1) - ret = __raw_readl(a); - else - ret = __raw_readb(a); - } - return ret; -} - -/* - * We're addressing a 16-bit peripheral which transfers odd - * addresses on the high ISA byte lane. - */ -u8 __inb16(unsigned int port) -{ - unsigned int offset; - - /* - * The SuperIO registers use sane addressing techniques... - */ - if (SUPERIO_PORT(port)) - offset = port << 2; - else - offset = (port & ~1) << 1 | (port & 1); - - return __raw_readb((void __iomem *)ISAIO_BASE + offset); -} - -u16 __inw(unsigned int port) -{ - unsigned int offset; - - /* - * The SuperIO registers use sane addressing techniques... - */ - if (SUPERIO_PORT(port)) - offset = port << 2; - else { - offset = port << 1; - BUG_ON(port & 1); - } - return __raw_readw((void __iomem *)ISAIO_BASE + offset); -} - -/* - * Fake a 32-bit read with two 16-bit reads. Needed for 3c589. - */ -u32 __inl(unsigned int port) -{ - void __iomem *a; - - if (SUPERIO_PORT(port) || port & 3) - BUG(); - - a = (void __iomem *)ISAIO_BASE + ((port & ~1) << 1); - - return __raw_readw(a) | __raw_readw(a + 4) << 16; -} - -EXPORT_SYMBOL(__inb8); -EXPORT_SYMBOL(__inb16); -EXPORT_SYMBOL(__inw); -EXPORT_SYMBOL(__inl); - -void __outb8(u8 val, unsigned int port) -{ - /* - * The SuperIO registers use sane addressing techniques... - */ - if (SUPERIO_PORT(port)) - __raw_writeb(val, (void __iomem *)ISAIO_BASE + (port << 2)); - else { - void __iomem *a = (void __iomem *)ISAIO_BASE + ((port & ~1) << 1); - - /* - * Shame nothing else does - */ - if (port & 1) - __raw_writel(val, a); - else - __raw_writeb(val, a); - } -} - -void __outb16(u8 val, unsigned int port) -{ - unsigned int offset; - - /* - * The SuperIO registers use sane addressing techniques... - */ - if (SUPERIO_PORT(port)) - offset = port << 2; - else - offset = (port & ~1) << 1 | (port & 1); - - __raw_writeb(val, (void __iomem *)ISAIO_BASE + offset); -} - -void __outw(u16 val, unsigned int port) -{ - unsigned int offset; - - /* - * The SuperIO registers use sane addressing techniques... - */ - if (SUPERIO_PORT(port)) - offset = port << 2; - else { - offset = port << 1; - BUG_ON(port & 1); - } - __raw_writew(val, (void __iomem *)ISAIO_BASE + offset); -} - -void __outl(u32 val, unsigned int port) -{ - BUG(); -} - -EXPORT_SYMBOL(__outb8); -EXPORT_SYMBOL(__outb16); -EXPORT_SYMBOL(__outw); -EXPORT_SYMBOL(__outl); - -void outsb(unsigned int port, const void *from, int len) -{ - u32 off; - - if (SUPERIO_PORT(port)) - off = port << 2; - else { - off = (port & ~1) << 1; - if (port & 1) - BUG(); - } - - __raw_writesb((void __iomem *)ISAIO_BASE + off, from, len); -} - -void insb(unsigned int port, void *from, int len) -{ - u32 off; - - if (SUPERIO_PORT(port)) - off = port << 2; - else { - off = (port & ~1) << 1; - if (port & 1) - BUG(); - } - - __raw_readsb((void __iomem *)ISAIO_BASE + off, from, len); -} - -EXPORT_SYMBOL(outsb); -EXPORT_SYMBOL(insb); - -void outsw(unsigned int port, const void *from, int len) -{ - u32 off; - - if (SUPERIO_PORT(port)) - off = port << 2; - else { - off = (port & ~1) << 1; - if (port & 1) - BUG(); - } - - __raw_writesw((void __iomem *)ISAIO_BASE + off, from, len); -} - -void insw(unsigned int port, void *from, int len) -{ - u32 off; - - if (SUPERIO_PORT(port)) - off = port << 2; - else { - off = (port & ~1) << 1; - if (port & 1) - BUG(); - } - - __raw_readsw((void __iomem *)ISAIO_BASE + off, from, len); -} - -EXPORT_SYMBOL(outsw); -EXPORT_SYMBOL(insw); - -/* - * We implement these as 16-bit insw/outsw, mainly for - * 3c589 cards. - */ -void outsl(unsigned int port, const void *from, int len) -{ - u32 off = port << 1; - - if (SUPERIO_PORT(port) || port & 3) - BUG(); - - __raw_writesw((void __iomem *)ISAIO_BASE + off, from, len << 1); -} - -void insl(unsigned int port, void *from, int len) -{ - u32 off = port << 1; - - if (SUPERIO_PORT(port) || port & 3) - BUG(); - - __raw_readsw((void __iomem *)ISAIO_BASE + off, from, len << 1); -} - -EXPORT_SYMBOL(outsl); -EXPORT_SYMBOL(insl); diff --git a/arch/arm/mach-ebsa110/leds.c b/arch/arm/mach-ebsa110/leds.c deleted file mode 100644 index fd1474b66d31..000000000000 --- a/arch/arm/mach-ebsa110/leds.c +++ /dev/null @@ -1,71 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Driver for the LED found on the EBSA110 machine - * Based on Versatile and RealView machine LED code - * - * Author: Bryan Wu - */ -#include -#include -#include -#include -#include - -#include - -#include "core.h" - -#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) -static void ebsa110_led_set(struct led_classdev *cdev, - enum led_brightness b) -{ - u8 reg = __raw_readb(SOFT_BASE); - - if (b != LED_OFF) - reg |= 0x80; - else - reg &= ~0x80; - - __raw_writeb(reg, SOFT_BASE); -} - -static enum led_brightness ebsa110_led_get(struct led_classdev *cdev) -{ - u8 reg = __raw_readb(SOFT_BASE); - - return (reg & 0x80) ? LED_FULL : LED_OFF; -} - -static int __init ebsa110_leds_init(void) -{ - - struct led_classdev *cdev; - int ret; - - if (!machine_is_ebsa110()) - return -ENODEV; - - cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); - if (!cdev) - return -ENOMEM; - - cdev->name = "ebsa110:0"; - cdev->brightness_set = ebsa110_led_set; - cdev->brightness_get = ebsa110_led_get; - cdev->default_trigger = "heartbeat"; - - ret = led_classdev_register(NULL, cdev); - if (ret < 0) { - kfree(cdev); - return ret; - } - - return 0; -} - -/* - * Since we may have triggers on any subsystem, defer registration - * until after subsystem_init. - */ -fs_initcall(ebsa110_leds_init); -#endif diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index fd7968635e6d..f22e37337030 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -599,7 +599,7 @@ config K3_RTI_WATCHDOG config ORION_WATCHDOG tristate "Orion watchdog" - depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110) + depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST depends on ARM select WATCHDOG_CORE help From 0d9dc7459a82f0ddd7907cd9fc0f6cc032c058da Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 20:24:25 +0200 Subject: [PATCH 02/15] net: remove am79c961a driver This driver was only used on the EBSA110 platform, which is now getting removed, so the driver is no longer needed either. Acked-by: Russell King Acked-by: Jakub Kicinski Signed-off-by: Arnd Bergmann --- drivers/net/ethernet/amd/Kconfig | 10 +- drivers/net/ethernet/amd/Makefile | 1 - drivers/net/ethernet/amd/am79c961a.c | 763 --------------------------- drivers/net/ethernet/amd/am79c961a.h | 143 ----- 4 files changed, 1 insertion(+), 916 deletions(-) delete mode 100644 drivers/net/ethernet/amd/am79c961a.c delete mode 100644 drivers/net/ethernet/amd/am79c961a.h diff --git a/drivers/net/ethernet/amd/Kconfig b/drivers/net/ethernet/amd/Kconfig index db7d956a9c9b..d0b0609bbe23 100644 --- a/drivers/net/ethernet/amd/Kconfig +++ b/drivers/net/ethernet/amd/Kconfig @@ -8,7 +8,7 @@ config NET_VENDOR_AMD default y depends on DIO || MACH_DECSTATION || MVME147 || ATARI || SUN3 || \ SUN3X || SBUS || PCI || ZORRO || (ISA && ISA_DMA_API) || \ - (ARM && ARCH_EBSA110) || ISA || EISA || PCMCIA || ARM64 + ISA || EISA || PCMCIA || ARM64 help If you have a network (Ethernet) chipset belonging to this class, say Y. @@ -75,14 +75,6 @@ config ARIADNE To compile this driver as a module, choose M here: the module will be called ariadne. -config ARM_AM79C961A - bool "ARM EBSA110 AM79C961A support" - depends on ARM && ARCH_EBSA110 - select CRC32 - help - If you wish to compile a kernel for the EBSA-110, then you should - always answer Y to this. - config ATARILANCE tristate "Atari LANCE support" depends on ATARI diff --git a/drivers/net/ethernet/amd/Makefile b/drivers/net/ethernet/amd/Makefile index 45f86822a5f7..0d2f478b49a5 100644 --- a/drivers/net/ethernet/amd/Makefile +++ b/drivers/net/ethernet/amd/Makefile @@ -5,7 +5,6 @@ obj-$(CONFIG_A2065) += a2065.o obj-$(CONFIG_AMD8111_ETH) += amd8111e.o -obj-$(CONFIG_ARM_AM79C961A) += am79c961a.o obj-$(CONFIG_ARIADNE) += ariadne.o obj-$(CONFIG_ATARILANCE) += atarilance.o obj-$(CONFIG_DECLANCE) += declance.o diff --git a/drivers/net/ethernet/amd/am79c961a.c b/drivers/net/ethernet/amd/am79c961a.c deleted file mode 100644 index 1c53408f5d47..000000000000 --- a/drivers/net/ethernet/amd/am79c961a.c +++ /dev/null @@ -1,763 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * linux/drivers/net/ethernet/amd/am79c961a.c - * - * by Russell King 1995-2001. - * - * Derived from various things including skeleton.c - * - * This is a special driver for the am79c961A Lance chip used in the - * Intel (formally Digital Equipment Corp) EBSA110 platform. Please - * note that this can not be built as a module (it doesn't make sense). - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#define TX_BUFFERS 15 -#define RX_BUFFERS 25 - -#include "am79c961a.h" - -static irqreturn_t -am79c961_interrupt (int irq, void *dev_id); - -static unsigned int net_debug = NET_DEBUG; - -static const char version[] = - "am79c961 ethernet driver (C) 1995-2001 Russell King v0.04\n"; - -/* --------------------------------------------------------------------------- */ - -#ifdef __arm__ -static void write_rreg(u_long base, u_int reg, u_int val) -{ - asm volatile( - "strh %1, [%2] @ NET_RAP\n\t" - "strh %0, [%2, #-4] @ NET_RDP" - : - : "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464)); -} - -static inline unsigned short read_rreg(u_long base_addr, u_int reg) -{ - unsigned short v; - asm volatile( - "strh %1, [%2] @ NET_RAP\n\t" - "ldrh %0, [%2, #-4] @ NET_RDP" - : "=r" (v) - : "r" (reg), "r" (ISAIO_BASE + 0x0464)); - return v; -} - -static inline void write_ireg(u_long base, u_int reg, u_int val) -{ - asm volatile( - "strh %1, [%2] @ NET_RAP\n\t" - "strh %0, [%2, #8] @ NET_IDP" - : - : "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464)); -} - -static inline unsigned short read_ireg(u_long base_addr, u_int reg) -{ - u_short v; - asm volatile( - "strh %1, [%2] @ NAT_RAP\n\t" - "ldrh %0, [%2, #8] @ NET_IDP\n\t" - : "=r" (v) - : "r" (reg), "r" (ISAIO_BASE + 0x0464)); - return v; -} - -#define am_writeword(dev,off,val) __raw_writew(val, ISAMEM_BASE + ((off) << 1)) -#define am_readword(dev,off) __raw_readw(ISAMEM_BASE + ((off) << 1)) - -static void -am_writebuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length) -{ - offset = ISAMEM_BASE + (offset << 1); - length = (length + 1) & ~1; - if ((int)buf & 2) { - asm volatile("strh %2, [%0], #4" - : "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8))); - buf += 2; - length -= 2; - } - while (length > 8) { - register unsigned int tmp asm("r2"), tmp2 asm("r3"); - asm volatile( - "ldmia %0!, {%1, %2}" - : "+r" (buf), "=&r" (tmp), "=&r" (tmp2)); - length -= 8; - asm volatile( - "strh %1, [%0], #4\n\t" - "mov %1, %1, lsr #16\n\t" - "strh %1, [%0], #4\n\t" - "strh %2, [%0], #4\n\t" - "mov %2, %2, lsr #16\n\t" - "strh %2, [%0], #4" - : "+r" (offset), "=&r" (tmp), "=&r" (tmp2)); - } - while (length > 0) { - asm volatile("strh %2, [%0], #4" - : "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8))); - buf += 2; - length -= 2; - } -} - -static void -am_readbuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length) -{ - offset = ISAMEM_BASE + (offset << 1); - length = (length + 1) & ~1; - if ((int)buf & 2) { - unsigned int tmp; - asm volatile( - "ldrh %2, [%0], #4\n\t" - "strb %2, [%1], #1\n\t" - "mov %2, %2, lsr #8\n\t" - "strb %2, [%1], #1" - : "=&r" (offset), "=&r" (buf), "=r" (tmp): "0" (offset), "1" (buf)); - length -= 2; - } - while (length > 8) { - register unsigned int tmp asm("r2"), tmp2 asm("r3"), tmp3; - asm volatile( - "ldrh %2, [%0], #4\n\t" - "ldrh %4, [%0], #4\n\t" - "ldrh %3, [%0], #4\n\t" - "orr %2, %2, %4, lsl #16\n\t" - "ldrh %4, [%0], #4\n\t" - "orr %3, %3, %4, lsl #16\n\t" - "stmia %1!, {%2, %3}" - : "=&r" (offset), "=&r" (buf), "=r" (tmp), "=r" (tmp2), "=r" (tmp3) - : "0" (offset), "1" (buf)); - length -= 8; - } - while (length > 0) { - unsigned int tmp; - asm volatile( - "ldrh %2, [%0], #4\n\t" - "strb %2, [%1], #1\n\t" - "mov %2, %2, lsr #8\n\t" - "strb %2, [%1], #1" - : "=&r" (offset), "=&r" (buf), "=r" (tmp) : "0" (offset), "1" (buf)); - length -= 2; - } -} -#else -#error Not compatible -#endif - -static int -am79c961_ramtest(struct net_device *dev, unsigned int val) -{ - unsigned char *buffer = kmalloc (65536, GFP_KERNEL); - int i, error = 0, errorcount = 0; - - if (!buffer) - return 0; - memset (buffer, val, 65536); - am_writebuffer(dev, 0, buffer, 65536); - memset (buffer, val ^ 255, 65536); - am_readbuffer(dev, 0, buffer, 65536); - for (i = 0; i < 65536; i++) { - if (buffer[i] != val && !error) { - printk ("%s: buffer error (%02X %02X) %05X - ", dev->name, val, buffer[i], i); - error = 1; - errorcount ++; - } else if (error && buffer[i] == val) { - printk ("%05X\n", i); - error = 0; - } - } - if (error) - printk ("10000\n"); - kfree (buffer); - return errorcount; -} - -static void am79c961_mc_hash(char *addr, u16 *hash) -{ - int idx, bit; - u32 crc; - - crc = ether_crc_le(ETH_ALEN, addr); - - idx = crc >> 30; - bit = (crc >> 26) & 15; - - hash[idx] |= 1 << bit; -} - -static unsigned int am79c961_get_rx_mode(struct net_device *dev, u16 *hash) -{ - unsigned int mode = MODE_PORT_10BT; - - if (dev->flags & IFF_PROMISC) { - mode |= MODE_PROMISC; - memset(hash, 0xff, 4 * sizeof(*hash)); - } else if (dev->flags & IFF_ALLMULTI) { - memset(hash, 0xff, 4 * sizeof(*hash)); - } else { - struct netdev_hw_addr *ha; - - memset(hash, 0, 4 * sizeof(*hash)); - - netdev_for_each_mc_addr(ha, dev) - am79c961_mc_hash(ha->addr, hash); - } - - return mode; -} - -static void -am79c961_init_for_open(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - unsigned long flags; - unsigned char *p; - u_int hdr_addr, first_free_addr; - u16 multi_hash[4], mode = am79c961_get_rx_mode(dev, multi_hash); - int i; - - /* - * Stop the chip. - */ - spin_lock_irqsave(&priv->chip_lock, flags); - write_rreg (dev->base_addr, CSR0, CSR0_BABL|CSR0_CERR|CSR0_MISS|CSR0_MERR|CSR0_TINT|CSR0_RINT|CSR0_STOP); - spin_unlock_irqrestore(&priv->chip_lock, flags); - - write_ireg (dev->base_addr, 5, 0x00a0); /* Receive address LED */ - write_ireg (dev->base_addr, 6, 0x0081); /* Collision LED */ - write_ireg (dev->base_addr, 7, 0x0090); /* XMIT LED */ - write_ireg (dev->base_addr, 2, 0x0000); /* MODE register selects media */ - - for (i = LADRL; i <= LADRH; i++) - write_rreg (dev->base_addr, i, multi_hash[i - LADRL]); - - for (i = PADRL, p = dev->dev_addr; i <= PADRH; i++, p += 2) - write_rreg (dev->base_addr, i, p[0] | (p[1] << 8)); - - write_rreg (dev->base_addr, MODE, mode); - write_rreg (dev->base_addr, POLLINT, 0); - write_rreg (dev->base_addr, SIZERXR, -RX_BUFFERS); - write_rreg (dev->base_addr, SIZETXR, -TX_BUFFERS); - - first_free_addr = RX_BUFFERS * 8 + TX_BUFFERS * 8 + 16; - hdr_addr = 0; - - priv->rxhead = 0; - priv->rxtail = 0; - priv->rxhdr = hdr_addr; - - for (i = 0; i < RX_BUFFERS; i++) { - priv->rxbuffer[i] = first_free_addr; - am_writeword (dev, hdr_addr, first_free_addr); - am_writeword (dev, hdr_addr + 2, RMD_OWN); - am_writeword (dev, hdr_addr + 4, (-1600)); - am_writeword (dev, hdr_addr + 6, 0); - first_free_addr += 1600; - hdr_addr += 8; - } - priv->txhead = 0; - priv->txtail = 0; - priv->txhdr = hdr_addr; - for (i = 0; i < TX_BUFFERS; i++) { - priv->txbuffer[i] = first_free_addr; - am_writeword (dev, hdr_addr, first_free_addr); - am_writeword (dev, hdr_addr + 2, TMD_STP|TMD_ENP); - am_writeword (dev, hdr_addr + 4, 0xf000); - am_writeword (dev, hdr_addr + 6, 0); - first_free_addr += 1600; - hdr_addr += 8; - } - - write_rreg (dev->base_addr, BASERXL, priv->rxhdr); - write_rreg (dev->base_addr, BASERXH, 0); - write_rreg (dev->base_addr, BASETXL, priv->txhdr); - write_rreg (dev->base_addr, BASERXH, 0); - write_rreg (dev->base_addr, CSR0, CSR0_STOP); - write_rreg (dev->base_addr, CSR3, CSR3_IDONM|CSR3_BABLM|CSR3_DXSUFLO); - write_rreg (dev->base_addr, CSR4, CSR4_APAD_XMIT|CSR4_MFCOM|CSR4_RCVCCOM|CSR4_TXSTRTM|CSR4_JABM); - write_rreg (dev->base_addr, CSR0, CSR0_IENA|CSR0_STRT); -} - -static void am79c961_timer(struct timer_list *t) -{ - struct dev_priv *priv = from_timer(priv, t, timer); - struct net_device *dev = priv->dev; - unsigned int lnkstat, carrier; - unsigned long flags; - - spin_lock_irqsave(&priv->chip_lock, flags); - lnkstat = read_ireg(dev->base_addr, ISALED0) & ISALED0_LNKST; - spin_unlock_irqrestore(&priv->chip_lock, flags); - carrier = netif_carrier_ok(dev); - - if (lnkstat && !carrier) { - netif_carrier_on(dev); - printk("%s: link up\n", dev->name); - } else if (!lnkstat && carrier) { - netif_carrier_off(dev); - printk("%s: link down\n", dev->name); - } - - mod_timer(&priv->timer, jiffies + msecs_to_jiffies(500)); -} - -/* - * Open/initialize the board. - */ -static int -am79c961_open(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - int ret; - - ret = request_irq(dev->irq, am79c961_interrupt, 0, dev->name, dev); - if (ret) - return ret; - - am79c961_init_for_open(dev); - - netif_carrier_off(dev); - - priv->timer.expires = jiffies; - add_timer(&priv->timer); - - netif_start_queue(dev); - - return 0; -} - -/* - * The inverse routine to am79c961_open(). - */ -static int -am79c961_close(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - unsigned long flags; - - del_timer_sync(&priv->timer); - - netif_stop_queue(dev); - netif_carrier_off(dev); - - spin_lock_irqsave(&priv->chip_lock, flags); - write_rreg (dev->base_addr, CSR0, CSR0_STOP); - write_rreg (dev->base_addr, CSR3, CSR3_MASKALL); - spin_unlock_irqrestore(&priv->chip_lock, flags); - - free_irq (dev->irq, dev); - - return 0; -} - -/* - * Set or clear promiscuous/multicast mode filter for this adapter. - */ -static void am79c961_setmulticastlist (struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - unsigned long flags; - u16 multi_hash[4], mode = am79c961_get_rx_mode(dev, multi_hash); - int i, stopped; - - spin_lock_irqsave(&priv->chip_lock, flags); - - stopped = read_rreg(dev->base_addr, CSR0) & CSR0_STOP; - - if (!stopped) { - /* - * Put the chip into suspend mode - */ - write_rreg(dev->base_addr, CTRL1, CTRL1_SPND); - - /* - * Spin waiting for chip to report suspend mode - */ - while ((read_rreg(dev->base_addr, CTRL1) & CTRL1_SPND) == 0) { - spin_unlock_irqrestore(&priv->chip_lock, flags); - nop(); - spin_lock_irqsave(&priv->chip_lock, flags); - } - } - - /* - * Update the multicast hash table - */ - for (i = 0; i < ARRAY_SIZE(multi_hash); i++) - write_rreg(dev->base_addr, i + LADRL, multi_hash[i]); - - /* - * Write the mode register - */ - write_rreg(dev->base_addr, MODE, mode); - - if (!stopped) { - /* - * Put the chip back into running mode - */ - write_rreg(dev->base_addr, CTRL1, 0); - } - - spin_unlock_irqrestore(&priv->chip_lock, flags); -} - -static void am79c961_timeout(struct net_device *dev, unsigned int txqueue) -{ - printk(KERN_WARNING "%s: transmit timed out, network cable problem?\n", - dev->name); - - /* - * ought to do some setup of the tx side here - */ - - netif_wake_queue(dev); -} - -/* - * Transmit a packet - */ -static netdev_tx_t -am79c961_sendpacket(struct sk_buff *skb, struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - unsigned int hdraddr, bufaddr; - unsigned int head; - unsigned long flags; - - head = priv->txhead; - hdraddr = priv->txhdr + (head << 3); - bufaddr = priv->txbuffer[head]; - head += 1; - if (head >= TX_BUFFERS) - head = 0; - - am_writebuffer (dev, bufaddr, skb->data, skb->len); - am_writeword (dev, hdraddr + 4, -skb->len); - am_writeword (dev, hdraddr + 2, TMD_OWN|TMD_STP|TMD_ENP); - priv->txhead = head; - - spin_lock_irqsave(&priv->chip_lock, flags); - write_rreg (dev->base_addr, CSR0, CSR0_TDMD|CSR0_IENA); - spin_unlock_irqrestore(&priv->chip_lock, flags); - - /* - * If the next packet is owned by the ethernet device, - * then the tx ring is full and we can't add another - * packet. - */ - if (am_readword(dev, priv->txhdr + (priv->txhead << 3) + 2) & TMD_OWN) - netif_stop_queue(dev); - - dev_consume_skb_any(skb); - - return NETDEV_TX_OK; -} - -/* - * If we have a good packet(s), get it/them out of the buffers. - */ -static void -am79c961_rx(struct net_device *dev, struct dev_priv *priv) -{ - do { - struct sk_buff *skb; - u_int hdraddr; - u_int pktaddr; - u_int status; - int len; - - hdraddr = priv->rxhdr + (priv->rxtail << 3); - pktaddr = priv->rxbuffer[priv->rxtail]; - - status = am_readword (dev, hdraddr + 2); - if (status & RMD_OWN) /* do we own it? */ - break; - - priv->rxtail ++; - if (priv->rxtail >= RX_BUFFERS) - priv->rxtail = 0; - - if ((status & (RMD_ERR|RMD_STP|RMD_ENP)) != (RMD_STP|RMD_ENP)) { - am_writeword (dev, hdraddr + 2, RMD_OWN); - dev->stats.rx_errors++; - if (status & RMD_ERR) { - if (status & RMD_FRAM) - dev->stats.rx_frame_errors++; - if (status & RMD_CRC) - dev->stats.rx_crc_errors++; - } else if (status & RMD_STP) - dev->stats.rx_length_errors++; - continue; - } - - len = am_readword(dev, hdraddr + 6); - skb = netdev_alloc_skb(dev, len + 2); - - if (skb) { - skb_reserve(skb, 2); - - am_readbuffer(dev, pktaddr, skb_put(skb, len), len); - am_writeword(dev, hdraddr + 2, RMD_OWN); - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - dev->stats.rx_bytes += len; - dev->stats.rx_packets++; - } else { - am_writeword (dev, hdraddr + 2, RMD_OWN); - dev->stats.rx_dropped++; - break; - } - } while (1); -} - -/* - * Update stats for the transmitted packet - */ -static void -am79c961_tx(struct net_device *dev, struct dev_priv *priv) -{ - do { - short len; - u_int hdraddr; - u_int status; - - hdraddr = priv->txhdr + (priv->txtail << 3); - status = am_readword (dev, hdraddr + 2); - if (status & TMD_OWN) - break; - - priv->txtail ++; - if (priv->txtail >= TX_BUFFERS) - priv->txtail = 0; - - if (status & TMD_ERR) { - u_int status2; - - dev->stats.tx_errors++; - - status2 = am_readword (dev, hdraddr + 6); - - /* - * Clear the error byte - */ - am_writeword (dev, hdraddr + 6, 0); - - if (status2 & TST_RTRY) - dev->stats.collisions += 16; - if (status2 & TST_LCOL) - dev->stats.tx_window_errors++; - if (status2 & TST_LCAR) - dev->stats.tx_carrier_errors++; - if (status2 & TST_UFLO) - dev->stats.tx_fifo_errors++; - continue; - } - dev->stats.tx_packets++; - len = am_readword (dev, hdraddr + 4); - dev->stats.tx_bytes += -len; - } while (priv->txtail != priv->txhead); - - netif_wake_queue(dev); -} - -static irqreturn_t -am79c961_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = (struct net_device *)dev_id; - struct dev_priv *priv = netdev_priv(dev); - u_int status, n = 100; - int handled = 0; - - do { - status = read_rreg(dev->base_addr, CSR0); - write_rreg(dev->base_addr, CSR0, status & - (CSR0_IENA|CSR0_TINT|CSR0_RINT| - CSR0_MERR|CSR0_MISS|CSR0_CERR|CSR0_BABL)); - - if (status & CSR0_RINT) { - handled = 1; - am79c961_rx(dev, priv); - } - if (status & CSR0_TINT) { - handled = 1; - am79c961_tx(dev, priv); - } - if (status & CSR0_MISS) { - handled = 1; - dev->stats.rx_dropped++; - } - if (status & CSR0_CERR) { - handled = 1; - mod_timer(&priv->timer, jiffies); - } - } while (--n && status & (CSR0_RINT | CSR0_TINT)); - - return IRQ_RETVAL(handled); -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void am79c961_poll_controller(struct net_device *dev) -{ - unsigned long flags; - local_irq_save(flags); - am79c961_interrupt(dev->irq, dev); - local_irq_restore(flags); -} -#endif - -/* - * Initialise the chip. Note that we always expect - * to be entered with interrupts enabled. - */ -static int -am79c961_hw_init(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - - spin_lock_irq(&priv->chip_lock); - write_rreg (dev->base_addr, CSR0, CSR0_STOP); - write_rreg (dev->base_addr, CSR3, CSR3_MASKALL); - spin_unlock_irq(&priv->chip_lock); - - am79c961_ramtest(dev, 0x66); - am79c961_ramtest(dev, 0x99); - - return 0; -} - -static void __init am79c961_banner(void) -{ - static unsigned version_printed; - - if (net_debug && version_printed++ == 0) - printk(KERN_INFO "%s", version); -} -static const struct net_device_ops am79c961_netdev_ops = { - .ndo_open = am79c961_open, - .ndo_stop = am79c961_close, - .ndo_start_xmit = am79c961_sendpacket, - .ndo_set_rx_mode = am79c961_setmulticastlist, - .ndo_tx_timeout = am79c961_timeout, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = am79c961_poll_controller, -#endif -}; - -static int am79c961_probe(struct platform_device *pdev) -{ - struct resource *res; - struct net_device *dev; - struct dev_priv *priv; - int i, ret; - - res = platform_get_resource(pdev, IORESOURCE_IO, 0); - if (!res) - return -ENODEV; - - dev = alloc_etherdev(sizeof(struct dev_priv)); - ret = -ENOMEM; - if (!dev) - goto out; - - SET_NETDEV_DEV(dev, &pdev->dev); - - priv = netdev_priv(dev); - - /* - * Fixed address and IRQ lines here. - * The PNP initialisation should have been - * done by the ether bootp loader. - */ - dev->base_addr = res->start; - ret = platform_get_irq(pdev, 0); - - if (ret < 0) { - ret = -ENODEV; - goto nodev; - } - dev->irq = ret; - - ret = -ENODEV; - if (!request_region(dev->base_addr, 0x18, dev->name)) - goto nodev; - - /* - * Reset the device. - */ - inb(dev->base_addr + NET_RESET); - udelay(5); - - /* - * Check the manufacturer part of the - * ether address. - */ - if (inb(dev->base_addr) != 0x08 || - inb(dev->base_addr + 2) != 0x00 || - inb(dev->base_addr + 4) != 0x2b) - goto release; - - for (i = 0; i < 6; i++) - dev->dev_addr[i] = inb(dev->base_addr + i * 2) & 0xff; - - am79c961_banner(); - - spin_lock_init(&priv->chip_lock); - priv->dev = dev; - timer_setup(&priv->timer, am79c961_timer, 0); - - if (am79c961_hw_init(dev)) - goto release; - - dev->netdev_ops = &am79c961_netdev_ops; - - ret = register_netdev(dev); - if (ret == 0) { - printk(KERN_INFO "%s: ether address %pM\n", - dev->name, dev->dev_addr); - return 0; - } - -release: - release_region(dev->base_addr, 0x18); -nodev: - free_netdev(dev); -out: - return ret; -} - -static struct platform_driver am79c961_driver = { - .probe = am79c961_probe, - .driver = { - .name = "am79c961", - }, -}; - -static int __init am79c961_init(void) -{ - return platform_driver_register(&am79c961_driver); -} - -__initcall(am79c961_init); diff --git a/drivers/net/ethernet/amd/am79c961a.h b/drivers/net/ethernet/amd/am79c961a.h deleted file mode 100644 index 73679e053ceb..000000000000 --- a/drivers/net/ethernet/amd/am79c961a.h +++ /dev/null @@ -1,143 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * linux/drivers/net/ethernet/amd/am79c961a.h - */ - -#ifndef _LINUX_am79c961a_H -#define _LINUX_am79c961a_H - -/* use 0 for production, 1 for verification, >2 for debug. debug flags: */ -#define DEBUG_TX 2 -#define DEBUG_RX 4 -#define DEBUG_INT 8 -#define DEBUG_IC 16 -#ifndef NET_DEBUG -#define NET_DEBUG 0 -#endif - -#define NET_UID 0 -#define NET_RDP 0x10 -#define NET_RAP 0x12 -#define NET_RESET 0x14 -#define NET_IDP 0x16 - -/* - * RAP registers - */ -#define CSR0 0 -#define CSR0_INIT 0x0001 -#define CSR0_STRT 0x0002 -#define CSR0_STOP 0x0004 -#define CSR0_TDMD 0x0008 -#define CSR0_TXON 0x0010 -#define CSR0_RXON 0x0020 -#define CSR0_IENA 0x0040 -#define CSR0_INTR 0x0080 -#define CSR0_IDON 0x0100 -#define CSR0_TINT 0x0200 -#define CSR0_RINT 0x0400 -#define CSR0_MERR 0x0800 -#define CSR0_MISS 0x1000 -#define CSR0_CERR 0x2000 -#define CSR0_BABL 0x4000 -#define CSR0_ERR 0x8000 - -#define CSR3 3 -#define CSR3_EMBA 0x0008 -#define CSR3_DXMT2PD 0x0010 -#define CSR3_LAPPEN 0x0020 -#define CSR3_DXSUFLO 0x0040 -#define CSR3_IDONM 0x0100 -#define CSR3_TINTM 0x0200 -#define CSR3_RINTM 0x0400 -#define CSR3_MERRM 0x0800 -#define CSR3_MISSM 0x1000 -#define CSR3_BABLM 0x4000 -#define CSR3_MASKALL 0x5F00 - -#define CSR4 4 -#define CSR4_JABM 0x0001 -#define CSR4_JAB 0x0002 -#define CSR4_TXSTRTM 0x0004 -#define CSR4_TXSTRT 0x0008 -#define CSR4_RCVCCOM 0x0010 -#define CSR4_RCVCCO 0x0020 -#define CSR4_MFCOM 0x0100 -#define CSR4_MFCO 0x0200 -#define CSR4_ASTRP_RCV 0x0400 -#define CSR4_APAD_XMIT 0x0800 - -#define CTRL1 5 -#define CTRL1_SPND 0x0001 - -#define LADRL 8 -#define LADRM1 9 -#define LADRM2 10 -#define LADRH 11 -#define PADRL 12 -#define PADRM 13 -#define PADRH 14 - -#define MODE 15 -#define MODE_DISRX 0x0001 -#define MODE_DISTX 0x0002 -#define MODE_LOOP 0x0004 -#define MODE_DTCRC 0x0008 -#define MODE_COLL 0x0010 -#define MODE_DRETRY 0x0020 -#define MODE_INTLOOP 0x0040 -#define MODE_PORT_AUI 0x0000 -#define MODE_PORT_10BT 0x0080 -#define MODE_DRXPA 0x2000 -#define MODE_DRXBA 0x4000 -#define MODE_PROMISC 0x8000 - -#define BASERXL 24 -#define BASERXH 25 -#define BASETXL 30 -#define BASETXH 31 - -#define POLLINT 47 - -#define SIZERXR 76 -#define SIZETXR 78 - -#define CSR_MFC 112 - -#define RMD_ENP 0x0100 -#define RMD_STP 0x0200 -#define RMD_CRC 0x0800 -#define RMD_FRAM 0x2000 -#define RMD_ERR 0x4000 -#define RMD_OWN 0x8000 - -#define TMD_ENP 0x0100 -#define TMD_STP 0x0200 -#define TMD_MORE 0x1000 -#define TMD_ERR 0x4000 -#define TMD_OWN 0x8000 - -#define TST_RTRY 0x0400 -#define TST_LCAR 0x0800 -#define TST_LCOL 0x1000 -#define TST_UFLO 0x4000 -#define TST_BUFF 0x8000 - -#define ISALED0 0x0004 -#define ISALED0_LNKST 0x8000 - -struct dev_priv { - unsigned long rxbuffer[RX_BUFFERS]; - unsigned long txbuffer[TX_BUFFERS]; - unsigned char txhead; - unsigned char txtail; - unsigned char rxhead; - unsigned char rxtail; - unsigned long rxhdr; - unsigned long txhdr; - spinlock_t chip_lock; - struct timer_list timer; - struct net_device *dev; -}; - -#endif From 77f6c0b87479c4578ac0798fc249637092ac45a3 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 12:30:50 +0200 Subject: [PATCH 03/15] timekeeping: remove arch_gettimeoffset With Arm EBSA110 gone, nothing uses it any more, so the corresponding code and the Kconfig option can be removed. Acked-by: Thomas Gleixner Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- .../time/modern-timekeeping/arch-support.txt | 33 ------------------- drivers/Makefile | 2 -- drivers/clocksource/Kconfig | 2 +- include/linux/time.h | 13 -------- kernel/time/Kconfig | 9 ----- kernel/time/clocksource.c | 8 ----- kernel/time/timekeeping.c | 25 +------------- kernel/trace/Kconfig | 2 -- 8 files changed, 2 insertions(+), 92 deletions(-) delete mode 100644 Documentation/features/time/modern-timekeeping/arch-support.txt diff --git a/Documentation/features/time/modern-timekeeping/arch-support.txt b/Documentation/features/time/modern-timekeeping/arch-support.txt deleted file mode 100644 index a84c3b9d9a94..000000000000 --- a/Documentation/features/time/modern-timekeeping/arch-support.txt +++ /dev/null @@ -1,33 +0,0 @@ -# -# Feature name: modern-timekeeping -# Kconfig: !ARCH_USES_GETTIMEOFFSET -# description: arch does not use arch_gettimeoffset() anymore -# - ----------------------- - | arch |status| - ----------------------- - | alpha: | ok | - | arc: | ok | - | arm: | TODO | - | arm64: | ok | - | c6x: | ok | - | csky: | ok | - | h8300: | ok | - | hexagon: | ok | - | ia64: | ok | - | m68k: | ok | - | microblaze: | ok | - | mips: | ok | - | nds32: | ok | - | nios2: | ok | - | openrisc: | ok | - | parisc: | ok | - | powerpc: | ok | - | riscv: | ok | - | s390: | ok | - | sh: | ok | - | sparc: | ok | - | um: | ok | - | x86: | ok | - | xtensa: | ok | - ----------------------- diff --git a/drivers/Makefile b/drivers/Makefile index c0cd1b9075e3..4ff1e4459512 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -135,9 +135,7 @@ obj-$(CONFIG_INFINIBAND) += infiniband/ obj-y += firmware/ obj-$(CONFIG_CRYPTO) += crypto/ obj-$(CONFIG_SUPERH) += sh/ -ifndef CONFIG_ARCH_USES_GETTIMEOFFSET obj-y += clocksource/ -endif obj-$(CONFIG_DCA) += dca/ obj-$(CONFIG_HID) += hid/ obj-$(CONFIG_PPC_PS3) += ps3/ diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 68b087bff59c..764936bfcb2c 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -563,7 +563,7 @@ config CLKSRC_QCOM config CLKSRC_VERSATILE bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST - depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET + depends on GENERIC_SCHED_CLOCK select TIMER_OF default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM help diff --git a/include/linux/time.h b/include/linux/time.h index b142cb5f5a53..16cf4522d6f3 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -21,19 +21,6 @@ extern time64_t mktime64(const unsigned int year, const unsigned int mon, const unsigned int day, const unsigned int hour, const unsigned int min, const unsigned int sec); -/* Some architectures do not supply their own clocksource. - * This is mainly the case in architectures that get their - * inter-tick times by reading the counter on their interval - * timer. Since these timers wrap every tick, they're not really - * useful as clocksources. Wrapping them to act like one is possible - * but not very efficient. So we provide a callout these arches - * can implement for use with the jiffies clocksource to provide - * finer then tick granular time. - */ -#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET -extern u32 (*arch_gettimeoffset)(void); -#endif - #ifdef CONFIG_POSIX_TIMERS extern void clear_itimer(void); #else diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index a09b1d61df6a..51d298ccbe05 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -26,10 +26,6 @@ config CLOCKSOURCE_VALIDATE_LAST_CYCLE config GENERIC_TIME_VSYSCALL bool -# Old style timekeeping -config ARCH_USES_GETTIMEOFFSET - bool - # The generic clock events infrastructure config GENERIC_CLOCKEVENTS bool @@ -72,7 +68,6 @@ config TICK_ONESHOT config NO_HZ_COMMON bool - depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS select TICK_ONESHOT choice @@ -87,7 +82,6 @@ config HZ_PERIODIC config NO_HZ_IDLE bool "Idle dynticks system (tickless idle)" - depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS select NO_HZ_COMMON help This option enables a tickless idle system: timer interrupts @@ -99,7 +93,6 @@ config NO_HZ_IDLE config NO_HZ_FULL bool "Full dynticks system (tickless)" # NO_HZ_COMMON dependency - depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS # We need at least one periodic CPU for timekeeping depends on SMP depends on HAVE_CONTEXT_TRACKING @@ -158,7 +151,6 @@ config CONTEXT_TRACKING_FORCE config NO_HZ bool "Old Idle dynticks config" - depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS help This is the old config entry that enables dynticks idle. We keep it around for a little while to enforce backward @@ -166,7 +158,6 @@ config NO_HZ config HIGH_RES_TIMERS bool "High Resolution Timer Support" - depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS select TICK_ONESHOT help This option enables high resolution timer support. If your diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c index 02441ead3c3b..cce484a2cc7c 100644 --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -705,8 +705,6 @@ static inline void clocksource_update_max_deferment(struct clocksource *cs) &cs->max_cycles); } -#ifndef CONFIG_ARCH_USES_GETTIMEOFFSET - static struct clocksource *clocksource_find_best(bool oneshot, bool skipcur) { struct clocksource *cs; @@ -798,12 +796,6 @@ static void clocksource_select_fallback(void) __clocksource_select(true); } -#else /* !CONFIG_ARCH_USES_GETTIMEOFFSET */ -static inline void clocksource_select(void) { } -static inline void clocksource_select_fallback(void) { } - -#endif - /* * clocksource_done_booting - Called near the end of core bootup * diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 6858a31364b6..52fff7e9edcd 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -369,13 +369,6 @@ static void tk_setup_internals(struct timekeeper *tk, struct clocksource *clock) /* Timekeeper helper functions. */ -#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET -static u32 default_arch_gettimeoffset(void) { return 0; } -u32 (*arch_gettimeoffset)(void) = default_arch_gettimeoffset; -#else -static inline u32 arch_gettimeoffset(void) { return 0; } -#endif - static inline u64 timekeeping_delta_to_ns(const struct tk_read_base *tkr, u64 delta) { u64 nsec; @@ -383,8 +376,7 @@ static inline u64 timekeeping_delta_to_ns(const struct tk_read_base *tkr, u64 de nsec = delta * tkr->mult + tkr->xtime_nsec; nsec >>= tkr->shift; - /* If arch requires, add in get_arch_timeoffset() */ - return nsec + arch_gettimeoffset(); + return nsec; } static inline u64 timekeeping_get_ns(const struct tk_read_base *tkr) @@ -778,16 +770,8 @@ static void timekeeping_forward_now(struct timekeeper *tk) tk->tkr_raw.cycle_last = cycle_now; tk->tkr_mono.xtime_nsec += delta * tk->tkr_mono.mult; - - /* If arch requires, add in get_arch_timeoffset() */ - tk->tkr_mono.xtime_nsec += (u64)arch_gettimeoffset() << tk->tkr_mono.shift; - - tk->tkr_raw.xtime_nsec += delta * tk->tkr_raw.mult; - /* If arch requires, add in get_arch_timeoffset() */ - tk->tkr_raw.xtime_nsec += (u64)arch_gettimeoffset() << tk->tkr_raw.shift; - tk_normalize_xtime(tk); } @@ -2133,19 +2117,12 @@ static void timekeeping_advance(enum timekeeping_adv_mode mode) if (unlikely(timekeeping_suspended)) goto out; -#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET - offset = real_tk->cycle_interval; - - if (mode != TK_ADV_TICK) - goto out; -#else offset = clocksource_delta(tk_clock_read(&tk->tkr_mono), tk->tkr_mono.cycle_last, tk->tkr_mono.mask); /* Check if there's really nothing to do */ if (offset < real_tk->cycle_interval && mode == TK_ADV_TICK) goto out; -#endif /* Do some additional sanity checking */ timekeeping_check_update(tk, offset); diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index a4020c0b4508..b74099f990bf 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -253,7 +253,6 @@ config IRQSOFF_TRACER bool "Interrupts-off Latency Tracer" default n depends on TRACE_IRQFLAGS_SUPPORT - depends on !ARCH_USES_GETTIMEOFFSET select TRACE_IRQFLAGS select GENERIC_TRACER select TRACER_MAX_TRACE @@ -277,7 +276,6 @@ config IRQSOFF_TRACER config PREEMPT_TRACER bool "Preemption-off Latency Tracer" default n - depends on !ARCH_USES_GETTIMEOFFSET depends on PREEMPTION select GENERIC_TRACER select TRACER_MAX_TRACE From b3550164a19d62e515af6cacb5a31f0b2b3f9501 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 15:21:43 +0200 Subject: [PATCH 04/15] timekeeping: add CONFIG_LEGACY_TIMER_TICK All platforms that currently do not use generic clockevents roughly call the same set of functions in their timer interrupts: xtime_update(), update_process_times() and profile_tick(), sometimes in a different sequence. Add a helper function that performs all three of them, to make the callers more uniform and simplify the interface. Reviewed-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- include/linux/timekeeping.h | 1 + kernel/time/Kconfig | 7 +++++++ kernel/time/Makefile | 1 + kernel/time/tick-legacy.c | 19 +++++++++++++++++++ 4 files changed, 28 insertions(+) create mode 100644 kernel/time/tick-legacy.c diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 7f7e4a3f4394..3670cb1670ff 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -12,6 +12,7 @@ extern int timekeeping_suspended; /* Architecture timer tick functions: */ extern void update_process_times(int user); extern void xtime_update(unsigned long ticks); +extern void legacy_timer_tick(unsigned long ticks); /* * Get and set timeofday diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index 51d298ccbe05..c6867f29d279 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -57,6 +57,13 @@ config POSIX_CPU_TIMERS_TASK_WORK bool default y if POSIX_TIMERS && HAVE_POSIX_CPU_TIMERS_TASK_WORK +config LEGACY_TIMER_TICK + bool + help + The legacy timer tick helper is used by platforms that + lack support for the generic clockevent framework. + New platforms should use generic clockevents instead. + if GENERIC_CLOCKEVENTS menu "Timers subsystem" diff --git a/kernel/time/Makefile b/kernel/time/Makefile index c8f00168afe8..1fb1c1ef6a19 100644 --- a/kernel/time/Makefile +++ b/kernel/time/Makefile @@ -16,6 +16,7 @@ ifeq ($(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST),y) endif obj-$(CONFIG_GENERIC_SCHED_CLOCK) += sched_clock.o obj-$(CONFIG_TICK_ONESHOT) += tick-oneshot.o tick-sched.o +obj-$(CONFIG_LEGACY_TIMER_TICK) += tick-legacy.o obj-$(CONFIG_HAVE_GENERIC_VDSO) += vsyscall.o obj-$(CONFIG_DEBUG_FS) += timekeeping_debug.o obj-$(CONFIG_TEST_UDELAY) += test_udelay.o diff --git a/kernel/time/tick-legacy.c b/kernel/time/tick-legacy.c new file mode 100644 index 000000000000..73c5a0af4743 --- /dev/null +++ b/kernel/time/tick-legacy.c @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Timer tick function for architectures that lack generic clockevents, + * consolidated here from m68k/ia64/parisc/arm. + */ + +#include +#include +#include + +#include "tick-internal.h" + +void legacy_timer_tick(unsigned long ticks) +{ + if (ticks) + xtime_update(ticks); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); +} From 2b49ddcef2972e89922da9080809a9c1c82f9ecc Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 15:23:13 +0200 Subject: [PATCH 05/15] ia64: convert to legacy_timer_tick ia64 is the only architecture that calls xtime_update() in a loop, once for each jiffie that has passed since the last event. Before commit 3171a0305d62 ("[PATCH] simplify update_times (avoid jiffies/jiffies_64 aliasing problem)") in 2006, it could not actually do this any differently, but now it seems simpler to just pass the number of jiffies that passed in the meantime. While this loses the ability process interrupts in the middle of the timer tick by calling local_irq_enable(), doing so is fairly peculiar anyway and it seems better to just do what everyone else does here. Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/ia64/Kconfig | 1 + arch/ia64/kernel/time.c | 38 ++++++++++++++------------------------ 2 files changed, 15 insertions(+), 24 deletions(-) diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 39b25a5a591b..db8c2a365b70 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -46,6 +46,7 @@ config IA64 select ARCH_THREAD_STACK_ALLOCATOR select ARCH_CLOCKSOURCE_DATA select GENERIC_TIME_VSYSCALL + select LEGACY_TIMER_TICK select SWIOTLB select SYSCTL_ARCH_UNALIGN_NO_WARN select HAVE_MOD_ARCH_SPECIFIC diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c index 7abc5f37bfaf..9431edb08508 100644 --- a/arch/ia64/kernel/time.c +++ b/arch/ia64/kernel/time.c @@ -161,40 +161,30 @@ void vtime_account_idle(struct task_struct *tsk) static irqreturn_t timer_interrupt (int irq, void *dev_id) { - unsigned long new_itm; + unsigned long cur_itm, new_itm, ticks; if (cpu_is_offline(smp_processor_id())) { return IRQ_HANDLED; } new_itm = local_cpu_data->itm_next; + cur_itm = ia64_get_itc(); - if (!time_after(ia64_get_itc(), new_itm)) + if (!time_after(cur_itm, new_itm)) { printk(KERN_ERR "Oops: timer tick before it's due (itc=%lx,itm=%lx)\n", - ia64_get_itc(), new_itm); - - profile_tick(CPU_PROFILING); - - while (1) { - update_process_times(user_mode(get_irq_regs())); - - new_itm += local_cpu_data->itm_delta; - - if (smp_processor_id() == time_keeper_id) - xtime_update(1); - - local_cpu_data->itm_next = new_itm; - - if (time_after(new_itm, ia64_get_itc())) - break; - - /* - * Allow IPIs to interrupt the timer loop. - */ - local_irq_enable(); - local_irq_disable(); + cur_itm, new_itm); + ticks = 1; + } else { + ticks = DIV_ROUND_UP(cur_itm - new_itm, + local_cpu_data->itm_delta); + new_itm += ticks * local_cpu_data->itm_delta; } + if (smp_processor_id() != time_keeper_id) + ticks = 0; + + legacy_timer_tick(ticks); + do { /* * If we're too close to the next clock tick for From 6239da297281e2ea6284ce28a92f97ab047aa365 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 15:26:08 +0200 Subject: [PATCH 06/15] ARM: rpc: use legacy_timer_tick rpc is the only user of the timer_tick() function now, and can just call the newly added generic version instead. Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/arm/Kconfig | 1 + arch/arm/include/asm/mach/time.h | 2 -- arch/arm/kernel/time.c | 14 -------------- arch/arm/mach-rpc/time.c | 2 +- 4 files changed, 2 insertions(+), 17 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 31391147315d..a652686c3b32 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -452,6 +452,7 @@ config ARCH_RPC select HAVE_IDE select HAVE_PATA_PLATFORM select ISA_DMA_API + select LEGACY_TIMER_TICK select NEED_MACH_IO_H select NEED_MACH_MEMORY_H select NO_IOPORT_MAP diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h index d75d39280db7..5f522916ec99 100644 --- a/arch/arm/include/asm/mach/time.h +++ b/arch/arm/include/asm/mach/time.h @@ -7,8 +7,6 @@ #ifndef __ASM_ARM_MACH_TIME_H #define __ASM_ARM_MACH_TIME_H -extern void timer_tick(void); - typedef void (*clock_access_fn)(struct timespec64 *); extern int register_persistent_clock(clock_access_fn read_persistent); diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index 09b149b09c43..b3836c94dc74 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -60,20 +60,6 @@ unsigned long profile_pc(struct pt_regs *regs) EXPORT_SYMBOL(profile_pc); #endif -#ifndef CONFIG_GENERIC_CLOCKEVENTS -/* - * Kernel system timer support. - */ -void timer_tick(void) -{ - profile_tick(CPU_PROFILING); - xtime_update(1); -#ifndef CONFIG_SMP - update_process_times(user_mode(get_irq_regs())); -#endif -} -#endif - static void dummy_clock_access(struct timespec64 *ts) { ts->tv_sec = 0; diff --git a/arch/arm/mach-rpc/time.c b/arch/arm/mach-rpc/time.c index da85cac761ba..9f8edcfe9357 100644 --- a/arch/arm/mach-rpc/time.c +++ b/arch/arm/mach-rpc/time.c @@ -81,7 +81,7 @@ static irqreturn_t ioc_timer_interrupt(int irq, void *dev_id) { ioc_time += RPC_LATCH; - timer_tick(); + legacy_timer_tick(1); return IRQ_HANDLED; } From 686092e7daaa9f43396c57ea0044799e47f0d9da Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 15:30:34 +0200 Subject: [PATCH 07/15] parisc: use legacy_timer_tick parisc has selected CONFIG_GENERIC_CLOCKEVENTS since commit 43b1f6abd590 ("parisc: Switch to generic sched_clock implementation"), but does not appear to actually be using it, and instead calls the low-level timekeeping functions directly. Remove the GENERIC_CLOCKEVENTS select again, and instead convert to the newly added legacy_timer_tick() helper. Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- Documentation/features/time/clockevents/arch-support.txt | 2 +- arch/parisc/Kconfig | 2 +- arch/parisc/kernel/time.c | 9 +++------ 3 files changed, 5 insertions(+), 8 deletions(-) diff --git a/Documentation/features/time/clockevents/arch-support.txt b/Documentation/features/time/clockevents/arch-support.txt index 8287b6aa522e..61a5c9d68c15 100644 --- a/Documentation/features/time/clockevents/arch-support.txt +++ b/Documentation/features/time/clockevents/arch-support.txt @@ -21,7 +21,7 @@ | nds32: | ok | | nios2: | ok | | openrisc: | ok | - | parisc: | ok | + | parisc: | TODO | | powerpc: | ok | | riscv: | ok | | s390: | ok | diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index b234e8154cbd..78b17621ee4a 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -52,7 +52,7 @@ config PARISC select HAVE_REGS_AND_STACK_ACCESS_API select GENERIC_SCHED_CLOCK select HAVE_UNSTABLE_SCHED_CLOCK if SMP - select GENERIC_CLOCKEVENTS + select LEGACY_TIMER_TICK select CPU_NO_EFFICIENT_FFS select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index 13d94f0f94a0..08e4d480abe1 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -70,8 +70,6 @@ irqreturn_t __irq_entry timer_interrupt(int irq, void *dev_id) /* gcc can optimize for "read-only" case with a local clocktick */ unsigned long cpt = clocktick; - profile_tick(CPU_PROFILING); - /* Initialize next_tick to the old expected tick time. */ next_tick = cpuinfo->it_value; @@ -86,10 +84,9 @@ irqreturn_t __irq_entry timer_interrupt(int irq, void *dev_id) cpuinfo->it_value = next_tick; /* Go do system house keeping. */ - if (cpu == 0) - xtime_update(ticks_elapsed); - - update_process_times(user_mode(get_irq_regs())); + if (cpu != 0) + ticks_elapsed = 0; + legacy_timer_tick(ticks_elapsed); /* Skip clockticks on purpose if we know we would miss those. * The new CR16 must be "later" than current CR16 otherwise From 275e70e4b9dd4d59639e43fb859d0c953a374752 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 16:28:53 +0200 Subject: [PATCH 08/15] m68k: coldfire: use legacy_timer_tick() Replace the indirect function calls in the timer code with direct calls to the newly added legacy_timer_tick() helper for those that have not yet been converted to generic clockevents. This makes the timer code a little more self-contained. Tested-by: Greg Ungerer Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/m68k/Kconfig.cpu | 35 +++++++++++++++++++++++++++++------ arch/m68k/coldfire/Makefile | 32 ++++++++++++++++++-------------- arch/m68k/coldfire/sltimers.c | 6 ++---- arch/m68k/coldfire/timers.c | 6 ++---- 4 files changed, 51 insertions(+), 28 deletions(-) diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu index 694c4fca9f5d..322a35ef14c6 100644 --- a/arch/m68k/Kconfig.cpu +++ b/arch/m68k/Kconfig.cpu @@ -137,6 +137,7 @@ config M5206 bool "MCF5206" depends on !MMU select COLDFIRE_SW_A7 + select COLDFIRE_TIMERS select HAVE_MBAR select CPU_NO_EFFICIENT_FFS help @@ -146,6 +147,7 @@ config M5206e bool "MCF5206e" depends on !MMU select COLDFIRE_SW_A7 + select COLDFIRE_TIMERS select HAVE_MBAR select CPU_NO_EFFICIENT_FFS help @@ -154,7 +156,7 @@ config M5206e config M520x bool "MCF520x" depends on !MMU - select GENERIC_CLOCKEVENTS + select COLDFIRE_PIT_TIMER select HAVE_CACHE_SPLIT help Freescale Coldfire 5207/5208 processor support. @@ -162,7 +164,7 @@ config M520x config M523x bool "MCF523x" depends on !MMU - select GENERIC_CLOCKEVENTS + select COLDFIRE_PIT_TIMER select HAVE_CACHE_SPLIT select HAVE_IPSBAR help @@ -172,6 +174,7 @@ config M5249 bool "MCF5249" depends on !MMU select COLDFIRE_SW_A7 + select COLDFIRE_TIMERS select HAVE_MBAR select CPU_NO_EFFICIENT_FFS help @@ -181,6 +184,7 @@ config M525x bool "MCF525x" depends on !MMU select COLDFIRE_SW_A7 + select COLDFIRE_TIMERS select HAVE_MBAR select CPU_NO_EFFICIENT_FFS help @@ -189,10 +193,10 @@ config M525x config M5271 bool "MCF5271" depends on !MMU + select COLDFIRE_PIT_TIMER select M527x select HAVE_CACHE_SPLIT select HAVE_IPSBAR - select GENERIC_CLOCKEVENTS help Freescale (Motorola) ColdFire 5270/5271 processor support. @@ -200,6 +204,7 @@ config M5272 bool "MCF5272" depends on !MMU select COLDFIRE_SW_A7 + select COLDFIRE_TIMERS select HAVE_MBAR select CPU_NO_EFFICIENT_FFS help @@ -208,17 +213,17 @@ config M5272 config M5275 bool "MCF5275" depends on !MMU + select COLDFIRE_PIT_TIMER select M527x select HAVE_CACHE_SPLIT select HAVE_IPSBAR - select GENERIC_CLOCKEVENTS help Freescale (Motorola) ColdFire 5274/5275 processor support. config M528x bool "MCF528x" depends on !MMU - select GENERIC_CLOCKEVENTS + select COLDFIRE_PIT_TIMER select HAVE_CACHE_SPLIT select HAVE_IPSBAR help @@ -227,6 +232,7 @@ config M528x config M5307 bool "MCF5307" depends on !MMU + select COLDFIRE_TIMERS select COLDFIRE_SW_A7 select HAVE_CACHE_CB select HAVE_MBAR @@ -237,6 +243,7 @@ config M5307 config M532x bool "MCF532x" depends on !MMU + select COLDFIRE_TIMERS select M53xx select HAVE_CACHE_CB help @@ -245,6 +252,7 @@ config M532x config M537x bool "MCF537x" depends on !MMU + select COLDFIRE_TIMERS select M53xx select HAVE_CACHE_CB help @@ -254,6 +262,7 @@ config M5407 bool "MCF5407" depends on !MMU select COLDFIRE_SW_A7 + select COLDFIRE_TIMERS select HAVE_CACHE_CB select HAVE_MBAR select CPU_NO_EFFICIENT_FFS @@ -263,6 +272,7 @@ config M5407 config M547x bool "MCF547x" select M54xx + select COLDFIRE_SLTIMERS select MMU_COLDFIRE if MMU select FPU if MMU select HAVE_CACHE_CB @@ -273,6 +283,7 @@ config M547x config M548x bool "MCF548x" + select COLDFIRE_SLTIMERS select MMU_COLDFIRE if MMU select FPU if MMU select M54xx @@ -284,8 +295,8 @@ config M548x config M5441x bool "MCF5441x" + select COLDFIRE_PIT_TIMER select MMU_COLDFIRE if MMU - select GENERIC_CLOCKEVENTS select HAVE_CACHE_CB help Freescale Coldfire 54410/54415/54416/54417/54418 processor support. @@ -302,6 +313,18 @@ config M54xx select HAVE_PCI bool +config COLDFIRE_PIT_TIMER + bool + select GENERIC_CLOCKEVENTS + +config COLDFIRE_TIMERS + bool + select LEGACY_TIMER_TICK + +config COLDFIRE_SLTIMERS + bool + select LEGACY_TIMER_TICK + endif # COLDFIRE diff --git a/arch/m68k/coldfire/Makefile b/arch/m68k/coldfire/Makefile index 573eabca1a3a..a3e18d73d8b8 100644 --- a/arch/m68k/coldfire/Makefile +++ b/arch/m68k/coldfire/Makefile @@ -16,20 +16,24 @@ asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 obj-$(CONFIG_COLDFIRE) += cache.o clk.o device.o dma.o entry.o vectors.o -obj-$(CONFIG_M5206) += m5206.o timers.o intc.o reset.o -obj-$(CONFIG_M5206e) += m5206.o timers.o intc.o reset.o -obj-$(CONFIG_M520x) += m520x.o pit.o intc-simr.o reset.o -obj-$(CONFIG_M523x) += m523x.o pit.o dma_timer.o intc-2.o reset.o -obj-$(CONFIG_M5249) += m5249.o timers.o intc.o intc-5249.o reset.o -obj-$(CONFIG_M525x) += m525x.o timers.o intc.o intc-525x.o reset.o -obj-$(CONFIG_M527x) += m527x.o pit.o intc-2.o reset.o -obj-$(CONFIG_M5272) += m5272.o intc-5272.o timers.o -obj-$(CONFIG_M528x) += m528x.o pit.o intc-2.o reset.o -obj-$(CONFIG_M5307) += m5307.o timers.o intc.o reset.o -obj-$(CONFIG_M53xx) += m53xx.o timers.o intc-simr.o reset.o -obj-$(CONFIG_M5407) += m5407.o timers.o intc.o reset.o -obj-$(CONFIG_M54xx) += m54xx.o sltimers.o intc-2.o -obj-$(CONFIG_M5441x) += m5441x.o pit.o intc-simr.o reset.o +obj-$(CONFIG_M5206) += m5206.o intc.o reset.o +obj-$(CONFIG_M5206e) += m5206.o intc.o reset.o +obj-$(CONFIG_M520x) += m520x.o intc-simr.o reset.o +obj-$(CONFIG_M523x) += m523x.o dma_timer.o intc-2.o reset.o +obj-$(CONFIG_M5249) += m5249.o intc.o intc-5249.o reset.o +obj-$(CONFIG_M525x) += m525x.o intc.o intc-525x.o reset.o +obj-$(CONFIG_M527x) += m527x.o intc-2.o reset.o +obj-$(CONFIG_M5272) += m5272.o intc-5272.o +obj-$(CONFIG_M528x) += m528x.o intc-2.o reset.o +obj-$(CONFIG_M5307) += m5307.o intc.o reset.o +obj-$(CONFIG_M53xx) += m53xx.o intc-simr.o reset.o +obj-$(CONFIG_M5407) += m5407.o intc.o reset.o +obj-$(CONFIG_M54xx) += m54xx.o intc-2.o +obj-$(CONFIG_M5441x) += m5441x.o intc-simr.o reset.o + +obj-$(CONFIG_COLDFIRE_PIT_TIMER) += pit.o +obj-$(CONFIG_COLDFIRE_TIMERS) += timers.o +obj-$(CONFIG_COLDFIRE_SLTIMERS) += sltimers.o obj-$(CONFIG_NETtel) += nettel.o obj-$(CONFIG_CLEOPATRA) += nettel.o diff --git a/arch/m68k/coldfire/sltimers.c b/arch/m68k/coldfire/sltimers.c index 5ab81c9c552d..25a1319f3cb8 100644 --- a/arch/m68k/coldfire/sltimers.c +++ b/arch/m68k/coldfire/sltimers.c @@ -83,14 +83,13 @@ void mcfslt_profile_init(void) static u32 mcfslt_cycles_per_jiffy; static u32 mcfslt_cnt; -static irq_handler_t timer_interrupt; - static irqreturn_t mcfslt_tick(int irq, void *dummy) { /* Reset Slice Timer 0 */ __raw_writel(MCFSLT_SSR_BE | MCFSLT_SSR_TE, TA(MCFSLT_SSR)); mcfslt_cnt += mcfslt_cycles_per_jiffy; - return timer_interrupt(irq, dummy); + legacy_timer_tick(1); + return IRQ_HANDLED; } static u64 mcfslt_read_clk(struct clocksource *cs) @@ -136,7 +135,6 @@ void hw_timer_init(irq_handler_t handler) /* initialize mcfslt_cnt knowing that slice timers count down */ mcfslt_cnt = mcfslt_cycles_per_jiffy; - timer_interrupt = handler; r = request_irq(MCF_IRQ_TIMER, mcfslt_tick, IRQF_TIMER, "timer", NULL); if (r) { pr_err("Failed to request irq %d (timer): %pe\n", MCF_IRQ_TIMER, diff --git a/arch/m68k/coldfire/timers.c b/arch/m68k/coldfire/timers.c index b8301fddf901..24b5e2d1b00b 100644 --- a/arch/m68k/coldfire/timers.c +++ b/arch/m68k/coldfire/timers.c @@ -48,8 +48,6 @@ void coldfire_profile_init(void); static u32 mcftmr_cycles_per_jiffy; static u32 mcftmr_cnt; -static irq_handler_t timer_interrupt; - /***************************************************************************/ static void init_timer_irq(void) @@ -77,7 +75,8 @@ static irqreturn_t mcftmr_tick(int irq, void *dummy) __raw_writeb(MCFTIMER_TER_CAP | MCFTIMER_TER_REF, TA(MCFTIMER_TER)); mcftmr_cnt += mcftmr_cycles_per_jiffy; - return timer_interrupt(irq, dummy); + legacy_timer_tick(1); + return IRQ_HANDLED; } /***************************************************************************/ @@ -126,7 +125,6 @@ void hw_timer_init(irq_handler_t handler) clocksource_register_hz(&mcftmr_clk, FREQ); - timer_interrupt = handler; init_timer_irq(); r = request_irq(MCF_IRQ_TIMER, mcftmr_tick, IRQF_TIMER, "timer", NULL); if (r) { From d6444094042b4f4b4623dc1a2437f61309b9b34b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 16:37:37 +0200 Subject: [PATCH 09/15] m68k: split heartbeat out of timer function The heartbeat functionality is mostly separate from the actual timer interrupt handling, and it is only used on five platforms. Split it out into a separate function and call that directly from the timer irq on those platforms. Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/m68k/amiga/config.c | 1 + arch/m68k/apollo/config.c | 1 + arch/m68k/atari/time.c | 2 ++ arch/m68k/hp300/time.c | 1 + arch/m68k/include/asm/machdep.h | 7 +++++++ arch/m68k/kernel/time.c | 7 +++++-- arch/m68k/q40/q40ints.c | 2 ++ 7 files changed, 19 insertions(+), 2 deletions(-) diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c index bee9f240f35d..29f92333119e 100644 --- a/arch/m68k/amiga/config.c +++ b/arch/m68k/amiga/config.c @@ -480,6 +480,7 @@ static irqreturn_t ciab_timer_handler(int irq, void *dev_id) clk_total += jiffy_ticks; clk_offset = 0; timer_routine(0, NULL); + timer_heartbeat(); return IRQ_HANDLED; } diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c index 762da5d7a415..30915f1a8760 100644 --- a/arch/m68k/apollo/config.c +++ b/arch/m68k/apollo/config.c @@ -173,6 +173,7 @@ irqreturn_t dn_timer_int(int irq, void *dev_id) volatile unsigned char x; timer_handler(irq, dev_id); + timer_heartbeat(); x = *(volatile unsigned char *)(apollo_timer + 3); x = *(volatile unsigned char *)(apollo_timer + 5); diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c index ce923a523695..ce4a5961ca93 100644 --- a/arch/m68k/atari/time.c +++ b/arch/m68k/atari/time.c @@ -21,6 +21,7 @@ #include #include +#include DEFINE_SPINLOCK(rtc_lock); EXPORT_SYMBOL_GPL(rtc_lock); @@ -49,6 +50,7 @@ static irqreturn_t mfp_timer_c_handler(int irq, void *dev_id) } while (last_timer_count == 1); clk_total += INT_TICKS; timer_routine(0, NULL); + timer_heartbeat(); local_irq_restore(flags); return IRQ_HANDLED; diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c index bfee13e1d0fe..e3cd938de0f9 100644 --- a/arch/m68k/hp300/time.c +++ b/arch/m68k/hp300/time.c @@ -65,6 +65,7 @@ static irqreturn_t hp300_tick(int irq, void *dev_id) clk_total += INTVAL; clk_offset = 0; timer_routine(0, NULL); + timer_heartbeat(); local_irq_restore(flags); /* Turn off the network and SCSI leds */ diff --git a/arch/m68k/include/asm/machdep.h b/arch/m68k/include/asm/machdep.h index 49bd3266b4b1..e62a39d01ae4 100644 --- a/arch/m68k/include/asm/machdep.h +++ b/arch/m68k/include/asm/machdep.h @@ -35,6 +35,13 @@ extern void (*mach_beep) (unsigned int, unsigned int); /* Hardware clock functions */ extern void hw_timer_init(irq_handler_t handler); extern unsigned long hw_timer_offset(void); +#ifdef CONFIG_HEARTBEAT +extern void timer_heartbeat(void); +#else +static inline void timer_heartbeat(void) +{ +} +#endif extern void config_BSP(char *command, int len); diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c index c2697a4d4ddd..c05cec21b05f 100644 --- a/arch/m68k/kernel/time.c +++ b/arch/m68k/kernel/time.c @@ -45,8 +45,12 @@ static irqreturn_t timer_interrupt(int irq, void *dummy) xtime_update(1); update_process_times(user_mode(get_irq_regs())); profile_tick(CPU_PROFILING); + return IRQ_HANDLED; +} #ifdef CONFIG_HEARTBEAT +void timer_heartbeat(void) +{ /* use power LED as a heartbeat instead -- much more useful for debugging -- based on the version for PReP by Cort */ /* acts like an actual heart beat -- ie thump-thump-pause... */ @@ -68,9 +72,8 @@ static irqreturn_t timer_interrupt(int irq, void *dummy) dist = period / 4; } } -#endif /* CONFIG_HEARTBEAT */ - return IRQ_HANDLED; } +#endif /* CONFIG_HEARTBEAT */ #ifdef CONFIG_M68KCLASSIC #if !IS_BUILTIN(CONFIG_RTC_DRV_GENERIC) diff --git a/arch/m68k/q40/q40ints.c b/arch/m68k/q40/q40ints.c index 1c696906c159..b01b545a2db0 100644 --- a/arch/m68k/q40/q40ints.c +++ b/arch/m68k/q40/q40ints.c @@ -17,6 +17,7 @@ #include #include +#include #include #include @@ -144,6 +145,7 @@ static irqreturn_t q40_timer_int(int irq, void *dev_id) local_irq_save(flags); timer_routine(0, NULL); + timer_heartbeat(); local_irq_restore(flags); } return IRQ_HANDLED; From 4a1c287aabba8b3a8efbfb2381d95c38470ed171 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 16:40:58 +0200 Subject: [PATCH 10/15] m68k: sun3/sun3c: use legacy_timer_tick These two are different from all other machines: * sun3 does not call timer_routine() but open-codes it except for the profile_tick() call that appears to be unintentionally missing. * sun3x has a commented-out timer irq handler but no functional timer tick I could find. Change both to calling the new legacy_timer_tick here, which includes the call to profile_tick() but does not fix sun3x as that is still commented out. Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/m68k/Kconfig.machine | 2 ++ arch/m68k/sun3/sun3ints.c | 3 +-- arch/m68k/sun3x/time.c | 3 +-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine index 17e8c3a292d7..e3c835440d9a 100644 --- a/arch/m68k/Kconfig.machine +++ b/arch/m68k/Kconfig.machine @@ -99,6 +99,7 @@ config HP300 config SUN3X bool "Sun3x support" depends on MMU + select LEGACY_TIMER_TICK select MMU_MOTOROLA if MMU select M68030 help @@ -126,6 +127,7 @@ config SUN3 depends on MMU depends on !MMU_MOTOROLA select MMU_SUN3 if MMU + select LEGACY_TIMER_TICK select NO_DMA select M68020 help diff --git a/arch/m68k/sun3/sun3ints.c b/arch/m68k/sun3/sun3ints.c index a5824abb4a39..41ae422119d3 100644 --- a/arch/m68k/sun3/sun3ints.c +++ b/arch/m68k/sun3/sun3ints.c @@ -73,8 +73,7 @@ static irqreturn_t sun3_int5(int irq, void *dev_id) #ifdef CONFIG_SUN3 intersil_clear(); #endif - xtime_update(1); - update_process_times(user_mode(get_irq_regs())); + legacy_timer_tick(1); cnt = kstat_irqs_cpu(irq, 0); if (!(cnt % 20)) sun3_leds(led_pattern[cnt % 160 / 20]); diff --git a/arch/m68k/sun3x/time.c b/arch/m68k/sun3x/time.c index 9163294b0fb6..f6e25fdc008c 100644 --- a/arch/m68k/sun3x/time.c +++ b/arch/m68k/sun3x/time.c @@ -77,14 +77,13 @@ int sun3x_hwclk(int set, struct rtc_time *t) #if 0 static irqreturn_t sun3x_timer_tick(int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; unsigned long flags; local_irq_save(flags); /* Clear the pending interrupt - pulse the enable line low */ disable_irq(5); enable_irq(5); - timer_routine(0, NULL); + legacy_timer_tick(1); local_irq_restore(flags); return IRQ_HANDLED; From 09323308f63708d60aea9d5b9552ce759ef278dc Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 17:06:38 +0200 Subject: [PATCH 11/15] m68k: m68328: use legacy_timer_tick() A couple of machines share the m68328 timer code that is based on calling timer_interrupt(). Change these to the new and slightly more generic legacy_timer_tick() helper. Reviewed-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/m68k/68000/timers.c | 5 ++--- arch/m68k/Kconfig.cpu | 3 +++ 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/m68k/68000/timers.c b/arch/m68k/68000/timers.c index e8dfdd2556a5..3aa006f8e7ea 100644 --- a/arch/m68k/68000/timers.c +++ b/arch/m68k/68000/timers.c @@ -52,7 +52,6 @@ #endif static u32 m68328_tick_cnt; -static irq_handler_t timer_interrupt; /***************************************************************************/ @@ -62,7 +61,8 @@ static irqreturn_t hw_tick(int irq, void *dummy) TSTAT &= 0; m68328_tick_cnt += TICKS_PER_JIFFY; - return timer_interrupt(irq, dummy); + legacy_timer_tick(1); + return IRQ_HANDLED; } /***************************************************************************/ @@ -113,7 +113,6 @@ void hw_timer_init(irq_handler_t handler) /* Enable timer 1 */ TCTL |= TCTL_TEN; clocksource_register_hz(&m68328_clk, TICKS_PER_JIFFY*HZ); - timer_interrupt = handler; } /***************************************************************************/ diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu index 322a35ef14c6..648054d4f860 100644 --- a/arch/m68k/Kconfig.cpu +++ b/arch/m68k/Kconfig.cpu @@ -104,6 +104,7 @@ config M68060 config M68328 bool "MC68328" depends on !MMU + select LEGACY_TIMER_TICK select M68000 help Motorola 68328 processor support. @@ -111,6 +112,7 @@ config M68328 config M68EZ328 bool "MC68EZ328" depends on !MMU + select LEGACY_TIMER_TICK select M68000 help Motorola 68EX328 processor support. @@ -118,6 +120,7 @@ config M68EZ328 config M68VZ328 bool "MC68VZ328" depends on !MMU + select LEGACY_TIMER_TICK select M68000 help Motorola 68VZ328 processor support. From 42f1d57f055064ed320d7292b95819dd81dda409 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 17:21:00 +0200 Subject: [PATCH 12/15] m68k: change remaining timers to legacy_timer_tick There are nine more machines that each have their own timer interrupt calling the m68k timer_interrupt() function through an indirect pointer. This function is now the same as legacy_timer_tick, so just call that directly and select the corresponding Kconfig symbol. Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/m68k/Kconfig.machine | 9 +++++++++ arch/m68k/amiga/config.c | 6 ++---- arch/m68k/apollo/config.c | 6 ++---- arch/m68k/atari/time.c | 5 ++--- arch/m68k/bvme6000/config.c | 5 ++--- arch/m68k/hp300/time.c | 5 ++--- arch/m68k/mac/via.c | 6 ++---- arch/m68k/mvme147/config.c | 5 ++--- arch/m68k/mvme16x/config.c | 5 ++--- arch/m68k/q40/q40ints.c | 6 ++---- 10 files changed, 27 insertions(+), 31 deletions(-) diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine index e3c835440d9a..b47ac37484fa 100644 --- a/arch/m68k/Kconfig.machine +++ b/arch/m68k/Kconfig.machine @@ -7,6 +7,7 @@ config AMIGA bool "Amiga support" depends on MMU select MMU_MOTOROLA if MMU + select LEGACY_TIMER_TICK help This option enables support for the Amiga series of computers. If you plan to use this kernel on an Amiga, say Y here and browse the @@ -17,6 +18,7 @@ config ATARI depends on MMU select MMU_MOTOROLA if MMU select HAVE_ARCH_NVRAM_OPS + select LEGACY_TIMER_TICK help This option enables support for the 68000-based Atari series of computers (including the TT, Falcon and Medusa). If you plan to use @@ -28,6 +30,7 @@ config MAC depends on MMU select MMU_MOTOROLA if MMU select HAVE_ARCH_NVRAM_OPS + select LEGACY_TIMER_TICK help This option enables support for the Apple Macintosh series of computers (yes, there is experimental support now, at least for part @@ -40,6 +43,7 @@ config APOLLO bool "Apollo support" depends on MMU select MMU_MOTOROLA if MMU + select LEGACY_TIMER_TICK help Say Y here if you want to run Linux on an MC680x0-based Apollo Domain workstation such as the DN3500. @@ -58,6 +62,7 @@ config MVME147 bool "MVME147 support" depends on MMU depends on VME + select LEGACY_TIMER_TICK help Say Y to include support for early Motorola VME boards. This will build a kernel which can run on MVME147 single-board computers. If @@ -68,6 +73,7 @@ config MVME16x bool "MVME162, 166 and 167 support" depends on MMU depends on VME + select LEGACY_TIMER_TICK help Say Y to include support for Motorola VME boards. This will build a kernel which can run on MVME162, MVME166, MVME167, MVME172, and @@ -79,6 +85,7 @@ config BVME6000 bool "BVME4000 and BVME6000 support" depends on MMU depends on VME + select LEGACY_TIMER_TICK help Say Y to include support for VME boards from BVM Ltd. This will build a kernel which can run on BVME4000 and BVME6000 boards. If @@ -89,6 +96,7 @@ config HP300 bool "HP9000/300 and HP9000/400 support" depends on MMU select MMU_MOTOROLA if MMU + select LEGACY_TIMER_TICK help This option enables support for the HP9000/300 and HP9000/400 series of workstations. Support for these machines is still somewhat @@ -115,6 +123,7 @@ config Q40 bool "Q40/Q60 support" depends on MMU select MMU_MOTOROLA if MMU + select LEGACY_TIMER_TICK help The Q40 is a Motorola 68040-based successor to the Sinclair QL manufactured in Germany. There is an official Q40 home page at diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c index 29f92333119e..91dc87b86411 100644 --- a/arch/m68k/amiga/config.c +++ b/arch/m68k/amiga/config.c @@ -475,11 +475,9 @@ static u32 clk_total, clk_offset; static irqreturn_t ciab_timer_handler(int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; - clk_total += jiffy_ticks; clk_offset = 0; - timer_routine(0, NULL); + legacy_timer_tick(1); timer_heartbeat(); return IRQ_HANDLED; @@ -504,7 +502,7 @@ static void __init amiga_sched_init(irq_handler_t timer_routine) * SCSI code. We'll have to take a look at this later */ if (request_irq(IRQ_AMIGA_CIAB_TA, ciab_timer_handler, IRQF_TIMER, - "timer", timer_routine)) + "timer", NULL)) pr_err("Couldn't register timer interrupt\n"); /* start timer */ ciab.cra |= 0x11; diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c index 30915f1a8760..17d59fa6b25b 100644 --- a/arch/m68k/apollo/config.c +++ b/arch/m68k/apollo/config.c @@ -168,11 +168,9 @@ void __init config_apollo(void) irqreturn_t dn_timer_int(int irq, void *dev_id) { - irq_handler_t timer_handler = dev_id; - volatile unsigned char x; - timer_handler(irq, dev_id); + legacy_timer_tick(1); timer_heartbeat(); x = *(volatile unsigned char *)(apollo_timer + 3); @@ -199,7 +197,7 @@ void dn_sched_init(irq_handler_t timer_routine) *(volatile unsigned char *)(apollo_timer + 0x3)); #endif - if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine)) + if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", NULL)) pr_err("Couldn't register timer interrupt\n"); } diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c index ce4a5961ca93..36d811ae09ee 100644 --- a/arch/m68k/atari/time.c +++ b/arch/m68k/atari/time.c @@ -41,7 +41,6 @@ static u8 last_timer_count; static irqreturn_t mfp_timer_c_handler(int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; unsigned long flags; local_irq_save(flags); @@ -49,7 +48,7 @@ static irqreturn_t mfp_timer_c_handler(int irq, void *dev_id) last_timer_count = st_mfp.tim_dt_c; } while (last_timer_count == 1); clk_total += INT_TICKS; - timer_routine(0, NULL); + legacy_timer_tick(1); timer_heartbeat(); local_irq_restore(flags); @@ -65,7 +64,7 @@ atari_sched_init(irq_handler_t timer_routine) st_mfp.tim_ct_cd = (st_mfp.tim_ct_cd & 15) | 0x60; /* install interrupt service routine for MFP Timer C */ if (request_irq(IRQ_MFP_TIMC, mfp_timer_c_handler, IRQF_TIMER, "timer", - timer_routine)) + NULL)) pr_err("Couldn't register timer interrupt\n"); clocksource_register_hz(&atari_clk, INT_CLK); diff --git a/arch/m68k/bvme6000/config.c b/arch/m68k/bvme6000/config.c index 50f4d01363df..d3f5963021d3 100644 --- a/arch/m68k/bvme6000/config.c +++ b/arch/m68k/bvme6000/config.c @@ -165,7 +165,6 @@ static u32 clk_total, clk_offset; static irqreturn_t bvme6000_timer_int (int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; unsigned long flags; volatile RtcPtr_t rtc = (RtcPtr_t)BVME_RTC_BASE; unsigned char msr; @@ -175,7 +174,7 @@ static irqreturn_t bvme6000_timer_int (int irq, void *dev_id) rtc->msr = msr | 0x20; /* Ack the interrupt */ clk_total += RTC_TIMER_CYCLES; clk_offset = 0; - timer_routine(0, NULL); + legacy_timer_tick(1); local_irq_restore(flags); return IRQ_HANDLED; @@ -198,7 +197,7 @@ void bvme6000_sched_init (irq_handler_t timer_routine) rtc->msr = 0; /* Ensure timer registers accessible */ if (request_irq(BVME_IRQ_RTC, bvme6000_timer_int, IRQF_TIMER, "timer", - timer_routine)) + NULL)) panic ("Couldn't register timer int"); rtc->t1cr_omr = 0x04; /* Mode 2, ext clk */ diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c index e3cd938de0f9..011fc2e5a68a 100644 --- a/arch/m68k/hp300/time.c +++ b/arch/m68k/hp300/time.c @@ -55,7 +55,6 @@ static u32 clk_total, clk_offset; static irqreturn_t hp300_tick(int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; unsigned long flags; unsigned long tmp; @@ -64,7 +63,7 @@ static irqreturn_t hp300_tick(int irq, void *dev_id) asm volatile ("movpw %1@(5),%0" : "=d" (tmp) : "a" (CLOCKBASE)); clk_total += INTVAL; clk_offset = 0; - timer_routine(0, NULL); + legacy_timer_tick(1); timer_heartbeat(); local_irq_restore(flags); @@ -106,7 +105,7 @@ void __init hp300_sched_init(irq_handler_t vector) asm volatile(" movpw %0,%1@(5)" : : "d" (INTVAL), "a" (CLOCKBASE)); - if (request_irq(IRQ_AUTO_6, hp300_tick, IRQF_TIMER, "timer tick", vector)) + if (request_irq(IRQ_AUTO_6, hp300_tick, IRQF_TIMER, "timer tick", NULL)) pr_err("Couldn't register timer interrupt\n"); out_8(CLOCKBASE + CLKCR2, 0x1); /* select CR1 */ diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c index ac77d73af19a..ba444e1774b8 100644 --- a/arch/m68k/mac/via.c +++ b/arch/m68k/mac/via.c @@ -602,11 +602,9 @@ static u32 clk_total, clk_offset; static irqreturn_t via_timer_handler(int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; - clk_total += VIA_TIMER_CYCLES; clk_offset = 0; - timer_routine(0, NULL); + legacy_timer_tick(1); return IRQ_HANDLED; } @@ -614,7 +612,7 @@ static irqreturn_t via_timer_handler(int irq, void *dev_id) void __init via_init_clock(irq_handler_t timer_routine) { if (request_irq(IRQ_MAC_TIMER_1, via_timer_handler, IRQF_TIMER, "timer", - timer_routine)) { + NULL)) { pr_err("Couldn't register %s interrupt\n", "timer"); return; } diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c index 490700aa2212..5dabbc915b8d 100644 --- a/arch/m68k/mvme147/config.c +++ b/arch/m68k/mvme147/config.c @@ -112,14 +112,13 @@ static u32 clk_total; static irqreturn_t mvme147_timer_int (int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; unsigned long flags; local_irq_save(flags); m147_pcc->t1_int_cntrl = PCC_TIMER_INT_CLR; m147_pcc->t1_cntrl = PCC_TIMER_CLR_OVF; clk_total += PCC_TIMER_CYCLES; - timer_routine(0, NULL); + legacy_timer_tick(1); local_irq_restore(flags); return IRQ_HANDLED; @@ -129,7 +128,7 @@ static irqreturn_t mvme147_timer_int (int irq, void *dev_id) void mvme147_sched_init (irq_handler_t timer_routine) { if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, IRQF_TIMER, - "timer 1", timer_routine)) + "timer 1", NULL)) pr_err("Couldn't register timer interrupt\n"); /* Init the clock with a value */ diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c index 5b86d10e0f84..ae9bb7fda161 100644 --- a/arch/m68k/mvme16x/config.c +++ b/arch/m68k/mvme16x/config.c @@ -372,14 +372,13 @@ static u32 clk_total; static irqreturn_t mvme16x_timer_int (int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; unsigned long flags; local_irq_save(flags); out_8(PCCTIC1, in_8(PCCTIC1) | PCCTIC1_INT_CLR); out_8(PCCTOVR1, PCCTOVR1_OVR_CLR); clk_total += PCC_TIMER_CYCLES; - timer_routine(0, NULL); + legacy_timer_tick(1); local_irq_restore(flags); return IRQ_HANDLED; @@ -396,7 +395,7 @@ void mvme16x_sched_init (irq_handler_t timer_routine) out_8(PCCTOVR1, in_8(PCCTOVR1) | PCCTOVR1_TIC_EN | PCCTOVR1_COC_EN); out_8(PCCTIC1, PCCTIC1_INT_EN | 6); if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, IRQF_TIMER, "timer", - timer_routine)) + NULL)) panic ("Couldn't register timer int"); clocksource_register_hz(&mvme16x_clk, PCC_TIMER_CLOCK_FREQ); diff --git a/arch/m68k/q40/q40ints.c b/arch/m68k/q40/q40ints.c index b01b545a2db0..4c6c409053fd 100644 --- a/arch/m68k/q40/q40ints.c +++ b/arch/m68k/q40/q40ints.c @@ -130,8 +130,6 @@ void q40_mksound(unsigned int hz, unsigned int ticks) static irqreturn_t q40_timer_int(int irq, void *dev_id) { - irq_handler_t timer_routine = dev_id; - ql_ticks = ql_ticks ? 0 : 1; if (sound_ticks) { unsigned char sval=(sound_ticks & 1) ? 128-SVOL : 128+SVOL; @@ -144,7 +142,7 @@ static irqreturn_t q40_timer_int(int irq, void *dev_id) unsigned long flags; local_irq_save(flags); - timer_routine(0, NULL); + legacy_timer_tick(1); timer_heartbeat(); local_irq_restore(flags); } @@ -157,7 +155,7 @@ void q40_sched_init (irq_handler_t timer_routine) timer_irq = Q40_IRQ_FRAME; - if (request_irq(timer_irq, q40_timer_int, 0, "timer", timer_routine)) + if (request_irq(timer_irq, q40_timer_int, 0, "timer", NULL)) panic("Couldn't register timer int"); master_outb(-1, FRAME_CLEAR_REG); From f9a015391e8908e68bd3147a8a5d8ac5f3ea2126 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 17:29:17 +0200 Subject: [PATCH 13/15] m68k: remove timer_interrupt() function This gets passed to a number of init functions, but is ignored everywhere, so remove the function and change the mach_sched_init callback to take no arguments. Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/m68k/68000/timers.c | 2 +- arch/m68k/amiga/config.c | 4 ++-- arch/m68k/apollo/config.c | 4 ++-- arch/m68k/atari/config.c | 2 +- arch/m68k/atari/time.c | 2 +- arch/m68k/bvme6000/config.c | 4 ++-- arch/m68k/coldfire/pit.c | 2 +- arch/m68k/coldfire/sltimers.c | 2 +- arch/m68k/coldfire/timers.c | 2 +- arch/m68k/hp300/time.c | 2 +- arch/m68k/hp300/time.h | 2 +- arch/m68k/include/asm/machdep.h | 5 ++--- arch/m68k/kernel/setup_mm.c | 2 +- arch/m68k/kernel/setup_no.c | 2 +- arch/m68k/kernel/time.c | 15 +-------------- arch/m68k/mac/config.c | 6 +++--- arch/m68k/mac/via.c | 2 +- arch/m68k/mvme147/config.c | 4 ++-- arch/m68k/mvme16x/config.c | 4 ++-- arch/m68k/q40/config.c | 2 +- arch/m68k/q40/q40ints.c | 2 +- arch/m68k/sun3/config.c | 4 ++-- arch/m68k/sun3x/time.c | 2 +- arch/m68k/sun3x/time.h | 2 +- 24 files changed, 33 insertions(+), 47 deletions(-) diff --git a/arch/m68k/68000/timers.c b/arch/m68k/68000/timers.c index 3aa006f8e7ea..0d0417cebc7f 100644 --- a/arch/m68k/68000/timers.c +++ b/arch/m68k/68000/timers.c @@ -91,7 +91,7 @@ static struct clocksource m68328_clk = { /***************************************************************************/ -void hw_timer_init(irq_handler_t handler) +void hw_timer_init(void) { int ret; diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c index 91dc87b86411..50e9a2c6523e 100644 --- a/arch/m68k/amiga/config.c +++ b/arch/m68k/amiga/config.c @@ -92,7 +92,7 @@ static char *amiga_models[] __initdata = { static char amiga_model_name[13] = "Amiga "; -static void amiga_sched_init(irq_handler_t handler); +static void amiga_sched_init(void); static void amiga_get_model(char *model); static void amiga_get_hardware_list(struct seq_file *m); extern void amiga_mksound(unsigned int count, unsigned int ticks); @@ -483,7 +483,7 @@ static irqreturn_t ciab_timer_handler(int irq, void *dev_id) return IRQ_HANDLED; } -static void __init amiga_sched_init(irq_handler_t timer_routine) +static void __init amiga_sched_init(void) { static struct resource sched_res = { .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff, diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c index 17d59fa6b25b..36c2cd97f228 100644 --- a/arch/m68k/apollo/config.c +++ b/arch/m68k/apollo/config.c @@ -26,7 +26,7 @@ u_long cpuctrl_physaddr; u_long timer_physaddr; u_long apollo_model; -extern void dn_sched_init(irq_handler_t handler); +extern void dn_sched_init(void); extern void dn_init_IRQ(void); extern int dn_dummy_hwclk(int, struct rtc_time *); extern void dn_dummy_reset(void); @@ -179,7 +179,7 @@ irqreturn_t dn_timer_int(int irq, void *dev_id) return IRQ_HANDLED; } -void dn_sched_init(irq_handler_t timer_routine) +void dn_sched_init(void) { /* program timer 1 */ *(volatile unsigned char *)(apollo_timer + 3) = 0x01; diff --git a/arch/m68k/atari/config.c b/arch/m68k/atari/config.c index 7ec3161e8517..50fda4bea521 100644 --- a/arch/m68k/atari/config.c +++ b/arch/m68k/atari/config.c @@ -77,7 +77,7 @@ static void atari_heartbeat(int on); #endif /* atari specific timer functions (in time.c) */ -extern void atari_sched_init(irq_handler_t); +extern void atari_sched_init(void); extern int atari_mste_hwclk (int, struct rtc_time *); extern int atari_tt_hwclk (int, struct rtc_time *); diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c index 36d811ae09ee..1068670cb741 100644 --- a/arch/m68k/atari/time.c +++ b/arch/m68k/atari/time.c @@ -56,7 +56,7 @@ static irqreturn_t mfp_timer_c_handler(int irq, void *dev_id) } void __init -atari_sched_init(irq_handler_t timer_routine) +atari_sched_init(void) { /* set Timer C data Register */ st_mfp.tim_dt_c = INT_TICKS; diff --git a/arch/m68k/bvme6000/config.c b/arch/m68k/bvme6000/config.c index d3f5963021d3..b37f8ce034e7 100644 --- a/arch/m68k/bvme6000/config.c +++ b/arch/m68k/bvme6000/config.c @@ -38,7 +38,7 @@ #include static void bvme6000_get_model(char *model); -extern void bvme6000_sched_init(irq_handler_t handler); +extern void bvme6000_sched_init(void); extern int bvme6000_hwclk (int, struct rtc_time *); extern void bvme6000_reset (void); void bvme6000_set_vectors (void); @@ -189,7 +189,7 @@ static irqreturn_t bvme6000_timer_int (int irq, void *dev_id) * so divide by 8 to get the microsecond result. */ -void bvme6000_sched_init (irq_handler_t timer_routine) +void bvme6000_sched_init (void) { volatile RtcPtr_t rtc = (RtcPtr_t)BVME_RTC_BASE; unsigned char msr = rtc->msr & 0xc0; diff --git a/arch/m68k/coldfire/pit.c b/arch/m68k/coldfire/pit.c index fd1d9c915daa..855d0af47097 100644 --- a/arch/m68k/coldfire/pit.c +++ b/arch/m68k/coldfire/pit.c @@ -136,7 +136,7 @@ static struct clocksource pit_clk = { /***************************************************************************/ -void hw_timer_init(irq_handler_t handler) +void hw_timer_init(void) { int ret; diff --git a/arch/m68k/coldfire/sltimers.c b/arch/m68k/coldfire/sltimers.c index 25a1319f3cb8..f9d572ee63db 100644 --- a/arch/m68k/coldfire/sltimers.c +++ b/arch/m68k/coldfire/sltimers.c @@ -118,7 +118,7 @@ static struct clocksource mcfslt_clk = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; -void hw_timer_init(irq_handler_t handler) +void hw_timer_init(void) { int r; diff --git a/arch/m68k/coldfire/timers.c b/arch/m68k/coldfire/timers.c index 24b5e2d1b00b..05a42d8e0a59 100644 --- a/arch/m68k/coldfire/timers.c +++ b/arch/m68k/coldfire/timers.c @@ -107,7 +107,7 @@ static struct clocksource mcftmr_clk = { /***************************************************************************/ -void hw_timer_init(irq_handler_t handler) +void hw_timer_init(void) { int r; diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c index 011fc2e5a68a..1d1b7b3b5dd4 100644 --- a/arch/m68k/hp300/time.c +++ b/arch/m68k/hp300/time.c @@ -98,7 +98,7 @@ again: return ticks; } -void __init hp300_sched_init(irq_handler_t vector) +void __init hp300_sched_init(void) { out_8(CLOCKBASE + CLKCR2, 0x1); /* select CR1 */ out_8(CLOCKBASE + CLKCR1, 0x1); /* reset */ diff --git a/arch/m68k/hp300/time.h b/arch/m68k/hp300/time.h index 1d77b55cc72a..040a098b7db1 100644 --- a/arch/m68k/hp300/time.h +++ b/arch/m68k/hp300/time.h @@ -1 +1 @@ -extern void hp300_sched_init(irq_handler_t vector); +extern void hp300_sched_init(void); diff --git a/arch/m68k/include/asm/machdep.h b/arch/m68k/include/asm/machdep.h index e62a39d01ae4..7181ed43ba22 100644 --- a/arch/m68k/include/asm/machdep.h +++ b/arch/m68k/include/asm/machdep.h @@ -12,7 +12,7 @@ struct rtc_time; struct rtc_pll_info; struct buffer_head; -extern void (*mach_sched_init) (irq_handler_t handler); +extern void (*mach_sched_init) (void); /* machine dependent irq functions */ extern void (*mach_init_IRQ) (void); extern void (*mach_get_model) (char *model); @@ -33,8 +33,7 @@ extern void (*mach_l2_flush) (int); extern void (*mach_beep) (unsigned int, unsigned int); /* Hardware clock functions */ -extern void hw_timer_init(irq_handler_t handler); -extern unsigned long hw_timer_offset(void); +extern void hw_timer_init(void); #ifdef CONFIG_HEARTBEAT extern void timer_heartbeat(void); #else diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c index ab8aa7be260f..0628733bfb88 100644 --- a/arch/m68k/kernel/setup_mm.c +++ b/arch/m68k/kernel/setup_mm.c @@ -82,7 +82,7 @@ static struct m68k_mem_info m68k_ramdisk __initdata; static char m68k_command_line[CL_SIZE] __initdata; -void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL; +void (*mach_sched_init) (void) __initdata = NULL; /* machine dependent irq functions */ void (*mach_init_IRQ) (void) __initdata = NULL; void (*mach_get_model) (char *model); diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c index f66f4b1d062e..e377b4219528 100644 --- a/arch/m68k/kernel/setup_no.c +++ b/arch/m68k/kernel/setup_no.c @@ -49,7 +49,7 @@ EXPORT_SYMBOL(memory_end); char __initdata command_line[COMMAND_LINE_SIZE]; /* machine dependent timer functions */ -void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL; +void (*mach_sched_init)(void) __initdata = NULL; int (*mach_hwclk) (int, struct rtc_time*); /* machine dependent reboot functions */ diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c index c05cec21b05f..340ffeea0a9d 100644 --- a/arch/m68k/kernel/time.c +++ b/arch/m68k/kernel/time.c @@ -35,19 +35,6 @@ unsigned long (*mach_random_get_entropy)(void); EXPORT_SYMBOL_GPL(mach_random_get_entropy); - -/* - * timer_interrupt() needs to keep up the real-time clock, - * as well as call the "xtime_update()" routine every clocktick - */ -static irqreturn_t timer_interrupt(int irq, void *dummy) -{ - xtime_update(1); - update_process_times(user_mode(get_irq_regs())); - profile_tick(CPU_PROFILING); - return IRQ_HANDLED; -} - #ifdef CONFIG_HEARTBEAT void timer_heartbeat(void) { @@ -157,5 +144,5 @@ module_init(rtc_init); void __init time_init(void) { - mach_sched_init(timer_interrupt); + mach_sched_init(); } diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c index 0ac53d87493c..0dbe0fedd826 100644 --- a/arch/m68k/mac/config.c +++ b/arch/m68k/mac/config.c @@ -58,7 +58,7 @@ extern int mac_hwclk(int, struct rtc_time *); extern void iop_preinit(void); extern void iop_init(void); extern void via_init(void); -extern void via_init_clock(irq_handler_t func); +extern void via_init_clock(void); extern void oss_init(void); extern void psc_init(void); extern void baboon_init(void); @@ -69,9 +69,9 @@ static void mac_get_model(char *str); static void mac_identify(void); static void mac_report_hardware(void); -static void __init mac_sched_init(irq_handler_t vector) +static void __init mac_sched_init(void) { - via_init_clock(vector); + via_init_clock(); } /* diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c index ba444e1774b8..8ad734e3c934 100644 --- a/arch/m68k/mac/via.c +++ b/arch/m68k/mac/via.c @@ -609,7 +609,7 @@ static irqreturn_t via_timer_handler(int irq, void *dev_id) return IRQ_HANDLED; } -void __init via_init_clock(irq_handler_t timer_routine) +void __init via_init_clock(void) { if (request_irq(IRQ_MAC_TIMER_1, via_timer_handler, IRQF_TIMER, "timer", NULL)) { diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c index 5dabbc915b8d..4fc43b5d7545 100644 --- a/arch/m68k/mvme147/config.c +++ b/arch/m68k/mvme147/config.c @@ -37,7 +37,7 @@ static void mvme147_get_model(char *model); -extern void mvme147_sched_init(irq_handler_t handler); +extern void mvme147_sched_init(void); extern int mvme147_hwclk (int, struct rtc_time *); extern void mvme147_reset (void); @@ -125,7 +125,7 @@ static irqreturn_t mvme147_timer_int (int irq, void *dev_id) } -void mvme147_sched_init (irq_handler_t timer_routine) +void mvme147_sched_init (void) { if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, IRQF_TIMER, "timer 1", NULL)) diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c index ae9bb7fda161..18e158887ec9 100644 --- a/arch/m68k/mvme16x/config.c +++ b/arch/m68k/mvme16x/config.c @@ -43,7 +43,7 @@ extern t_bdid mvme_bdid; static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE; static void mvme16x_get_model(char *model); -extern void mvme16x_sched_init(irq_handler_t handler); +extern void mvme16x_sched_init(void); extern int mvme16x_hwclk (int, struct rtc_time *); extern void mvme16x_reset (void); @@ -384,7 +384,7 @@ static irqreturn_t mvme16x_timer_int (int irq, void *dev_id) return IRQ_HANDLED; } -void mvme16x_sched_init (irq_handler_t timer_routine) +void mvme16x_sched_init(void) { uint16_t brdno = be16_to_cpu(mvme_bdid.brdno); int irq; diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c index 4627de3c0603..55f76f0fa29b 100644 --- a/arch/m68k/q40/config.c +++ b/arch/m68k/q40/config.c @@ -37,7 +37,7 @@ extern void q40_init_IRQ(void); static void q40_get_model(char *model); -extern void q40_sched_init(irq_handler_t handler); +extern void q40_sched_init(void); static int q40_hwclk(int, struct rtc_time *); static unsigned int q40_get_ss(void); diff --git a/arch/m68k/q40/q40ints.c b/arch/m68k/q40/q40ints.c index 4c6c409053fd..6886a5d0007b 100644 --- a/arch/m68k/q40/q40ints.c +++ b/arch/m68k/q40/q40ints.c @@ -149,7 +149,7 @@ static irqreturn_t q40_timer_int(int irq, void *dev_id) return IRQ_HANDLED; } -void q40_sched_init (irq_handler_t timer_routine) +void q40_sched_init (void) { int timer_irq; diff --git a/arch/m68k/sun3/config.c b/arch/m68k/sun3/config.c index 7204c0ea0dc7..f7dd47232b6c 100644 --- a/arch/m68k/sun3/config.c +++ b/arch/m68k/sun3/config.c @@ -36,7 +36,7 @@ char sun3_reserved_pmeg[SUN3_PMEGS_NUM]; -static void sun3_sched_init(irq_handler_t handler); +static void sun3_sched_init(void); extern void sun3_get_model (char* model); extern int sun3_hwclk(int set, struct rtc_time *t); @@ -151,7 +151,7 @@ void __init config_sun3(void) sun3_bootmem_alloc(memory_start, memory_end); } -static void __init sun3_sched_init(irq_handler_t timer_routine) +static void __init sun3_sched_init(void) { sun3_disable_interrupts(); intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE); diff --git a/arch/m68k/sun3x/time.c b/arch/m68k/sun3x/time.c index f6e25fdc008c..a2c97821faf2 100644 --- a/arch/m68k/sun3x/time.c +++ b/arch/m68k/sun3x/time.c @@ -90,7 +90,7 @@ static irqreturn_t sun3x_timer_tick(int irq, void *dev_id) } #endif -void __init sun3x_sched_init(irq_handler_t vector) +void __init sun3x_sched_init(void) { sun3_disable_interrupts(); diff --git a/arch/m68k/sun3x/time.h b/arch/m68k/sun3x/time.h index 86ce78bb3c28..7cfff22e4986 100644 --- a/arch/m68k/sun3x/time.h +++ b/arch/m68k/sun3x/time.h @@ -3,7 +3,7 @@ #define SUN3X_TIME_H extern int sun3x_hwclk(int set, struct rtc_time *t); -void sun3x_sched_init(irq_handler_t vector); +void sun3x_sched_init(void); struct mostek_dt { volatile unsigned char csr; From 56cc7b8acfb7c763f71c0492fa8da01dca7c1760 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 17:39:11 +0200 Subject: [PATCH 14/15] timekeeping: remove xtime_update There are no more users of xtime_update aside from legacy_timer_tick(), so fold it into that function and remove the declaration. update_process_times() is now only called inside of the kernel/time/ code, so the declaration can be moved there. Reviewed-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- include/linux/timekeeping.h | 2 -- kernel/time/tick-legacy.c | 22 ++++++++++++++++++++-- kernel/time/timekeeping.c | 16 ---------------- kernel/time/timekeeping.h | 1 + 4 files changed, 21 insertions(+), 20 deletions(-) diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 3670cb1670ff..d47009611109 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -10,8 +10,6 @@ void timekeeping_init(void); extern int timekeeping_suspended; /* Architecture timer tick functions: */ -extern void update_process_times(int user); -extern void xtime_update(unsigned long ticks); extern void legacy_timer_tick(unsigned long ticks); /* diff --git a/kernel/time/tick-legacy.c b/kernel/time/tick-legacy.c index 73c5a0af4743..af225b32f5b3 100644 --- a/kernel/time/tick-legacy.c +++ b/kernel/time/tick-legacy.c @@ -10,10 +10,28 @@ #include "tick-internal.h" +/** + * legacy_timer_tick() - advances the timekeeping infrastructure + * @ticks: number of ticks, that have elapsed since the last call. + * + * This is used by platforms that have not been converted to + * generic clockevents. + * + * If 'ticks' is zero, the CPU is not handling timekeeping, so + * only perform process accounting and profiling. + * + * Must be called with interrupts disabled. + */ void legacy_timer_tick(unsigned long ticks) { - if (ticks) - xtime_update(ticks); + if (ticks) { + raw_spin_lock(&jiffies_lock); + write_seqcount_begin(&jiffies_seq); + do_timer(ticks); + write_seqcount_end(&jiffies_seq); + raw_spin_unlock(&jiffies_lock); + update_wall_time(); + } update_process_times(user_mode(get_irq_regs())); profile_tick(CPU_PROFILING); } diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 52fff7e9edcd..daa0ff017819 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -2438,19 +2438,3 @@ void hardpps(const struct timespec64 *phase_ts, const struct timespec64 *raw_ts) } EXPORT_SYMBOL(hardpps); #endif /* CONFIG_NTP_PPS */ - -/** - * xtime_update() - advances the timekeeping infrastructure - * @ticks: number of ticks, that have elapsed since the last call. - * - * Must be called with interrupts disabled. - */ -void xtime_update(unsigned long ticks) -{ - raw_spin_lock(&jiffies_lock); - write_seqcount_begin(&jiffies_seq); - do_timer(ticks); - write_seqcount_end(&jiffies_seq); - raw_spin_unlock(&jiffies_lock); - update_wall_time(); -} diff --git a/kernel/time/timekeeping.h b/kernel/time/timekeeping.h index 099737f6f10c..d94b69c5b869 100644 --- a/kernel/time/timekeeping.h +++ b/kernel/time/timekeeping.h @@ -22,6 +22,7 @@ static inline int sched_clock_suspend(void) { return 0; } static inline void sched_clock_resume(void) { } #endif +extern void update_process_times(int user); extern void do_timer(unsigned long ticks); extern void update_wall_time(void); From 0774a6ed294b963dc76df2d8342ab86d030759ec Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 24 Sep 2020 11:32:40 +0200 Subject: [PATCH 15/15] timekeeping: default GENERIC_CLOCKEVENTS to enabled Almost all machines use GENERIC_CLOCKEVENTS, so it feels wrong to require each one to select that symbol manually. Instead, enable it whenever CONFIG_LEGACY_TIMER_TICK is disabled as a simplification. It should be possible to select both GENERIC_CLOCKEVENTS and LEGACY_TIMER_TICK from an architecture now and decide at runtime between the two. For the clockevents arch-support.txt file, this means that additional architectures are marked as TODO when they have at least one machine that still uses LEGACY_TIMER_TICK, rather than being marked 'ok' when at least one machine has been converted. This means that both m68k and arm (for riscpc) revert to TODO. At this point, we could just always enable CONFIG_GENERIC_CLOCKEVENTS rather than leaving it off when not needed. I built an m68k defconfig kernel (using gcc-10.1.0) and found that this would add around 5.5KB in kernel image size: text data bss dec hex filename 3861936 1092236 196656 5150828 4e986c obj-m68k/vmlinux-no-clockevent 3866201 1093832 196184 5156217 4ead79 obj-m68k/vmlinux-clockevent On Arm (MACH_RPC), that difference appears to be twice as large, around 11KB on top of an 6MB vmlinux. Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann --- .../features/time/clockevents/arch-support.txt | 6 +++--- arch/alpha/Kconfig | 1 - arch/arc/Kconfig | 1 - arch/arm/Kconfig | 12 ------------ arch/arm64/Kconfig | 1 - arch/arm64/Kconfig.platforms | 1 - arch/c6x/Kconfig | 1 - arch/csky/Kconfig | 1 - arch/h8300/Kconfig | 1 - arch/hexagon/Kconfig | 1 - arch/m68k/Kconfig.cpu | 1 - arch/microblaze/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/nds32/Kconfig | 1 - arch/nios2/Kconfig | 1 - arch/openrisc/Kconfig | 1 - arch/powerpc/Kconfig | 1 - arch/riscv/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/um/Kconfig | 1 - arch/x86/Kconfig | 1 - arch/xtensa/Kconfig | 1 - kernel/time/Kconfig | 2 +- 25 files changed, 4 insertions(+), 38 deletions(-) diff --git a/Documentation/features/time/clockevents/arch-support.txt b/Documentation/features/time/clockevents/arch-support.txt index 61a5c9d68c15..6863a3fbddad 100644 --- a/Documentation/features/time/clockevents/arch-support.txt +++ b/Documentation/features/time/clockevents/arch-support.txt @@ -1,6 +1,6 @@ # # Feature name: clockevents -# Kconfig: GENERIC_CLOCKEVENTS +# Kconfig: !LEGACY_TIMER_TICK # description: arch support generic clock events # ----------------------- @@ -8,14 +8,14 @@ ----------------------- | alpha: | ok | | arc: | ok | - | arm: | ok | + | arm: | TODO | | arm64: | ok | | c6x: | ok | | csky: | ok | | h8300: | ok | | hexagon: | ok | | ia64: | TODO | - | m68k: | ok | + | m68k: | TODO | | microblaze: | ok | | mips: | ok | | nds32: | ok | diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index d6e9fc7a7b19..f0a700946cac 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -27,7 +27,6 @@ config ALPHA select ARCH_WANT_IPC_PARSE_VERSION select ARCH_HAVE_NMI_SAFE_CMPXCHG select AUDIT_ARCH - select GENERIC_CLOCKEVENTS select GENERIC_CPU_VULNERABILITIES select GENERIC_SMP_IDLE_THREAD select GENERIC_STRNCPY_FROM_USER diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 0a89cc9def65..061eb8e23739 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -19,7 +19,6 @@ config ARC select COMMON_CLK select DMA_DIRECT_REMAP select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC) - select GENERIC_CLOCKEVENTS select GENERIC_FIND_FIRST_BIT # for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP select GENERIC_IRQ_SHOW diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a652686c3b32..446c6c88e47f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -321,7 +321,6 @@ config ARCH_MULTIPLATFORM select AUTO_ZRELADDR select TIMER_OF select COMMON_CLK - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_MULTI_HANDLER select HAVE_PCI select PCI_DOMAINS_GENERIC if PCI @@ -336,7 +335,6 @@ config ARM_SINGLE_ARMV7M select TIMER_OF select COMMON_CLK select CPU_V7M - select GENERIC_CLOCKEVENTS select NO_IOPORT_MAP select SPARSE_IRQ select USE_OF @@ -351,7 +349,6 @@ config ARCH_EP93XX select CLKDEV_LOOKUP select CLKSRC_MMIO select CPU_ARM920T - select GENERIC_CLOCKEVENTS select GPIOLIB select HAVE_LEGACY_CLK help @@ -361,7 +358,6 @@ config ARCH_FOOTBRIDGE bool "FootBridge" select CPU_SA110 select FOOTBRIDGE - select GENERIC_CLOCKEVENTS select HAVE_IDE select NEED_MACH_IO_H if !MMU select NEED_MACH_MEMORY_H @@ -389,7 +385,6 @@ config ARCH_IXP4XX select ARCH_SUPPORTS_BIG_ENDIAN select CPU_XSCALE select DMABOUNCE if PCI - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_MULTI_HANDLER select GPIO_IXP4XX select GPIOLIB @@ -405,7 +400,6 @@ config ARCH_IXP4XX config ARCH_DOVE bool "Marvell Dove" select CPU_PJ4 - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_MULTI_HANDLER select GPIOLIB select HAVE_PCI @@ -429,7 +423,6 @@ config ARCH_PXA select CLKSRC_MMIO select TIMER_OF select CPU_XSCALE if !CPU_XSC3 - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_MULTI_HANDLER select GPIO_PXA select GPIOLIB @@ -470,7 +463,6 @@ config ARCH_SA1100 select COMMON_CLK select CPU_FREQ select CPU_SA1100 - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_MULTI_HANDLER select GPIOLIB select HAVE_IDE @@ -485,7 +477,6 @@ config ARCH_S3C24XX bool "Samsung S3C24XX SoCs" select ATAGS select CLKSRC_SAMSUNG_PWM - select GENERIC_CLOCKEVENTS select GPIO_SAMSUNG select GPIOLIB select GENERIC_IRQ_MULTI_HANDLER @@ -509,7 +500,6 @@ config ARCH_OMAP1 select ARCH_OMAP select CLKDEV_LOOKUP select CLKSRC_MMIO - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_CHIP select GENERIC_IRQ_MULTI_HANDLER select GPIOLIB @@ -772,7 +762,6 @@ config ARCH_ACORN config PLAT_IOP bool - select GENERIC_CLOCKEVENTS config PLAT_ORION bool @@ -1163,7 +1152,6 @@ config HAVE_SMP config SMP bool "Symmetric Multi-Processing" depends on CPU_V6K || CPU_V7 - depends on GENERIC_CLOCKEVENTS depends on HAVE_SMP depends on MMU || ARM_MPU select IRQ_WORK diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index f858c352f72a..fee87e4104fd 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -101,7 +101,6 @@ config ARM64 select FRAME_POINTER select GENERIC_ALLOCATOR select GENERIC_ARCH_TOPOLOGY - select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST select GENERIC_CPU_AUTOPROBE select GENERIC_CPU_VULNERABILITIES diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms index 6f2494dd6d60..748e6d8c3b94 100644 --- a/arch/arm64/Kconfig.platforms +++ b/arch/arm64/Kconfig.platforms @@ -256,7 +256,6 @@ config ARCH_TEGRA select ARM_GIC_PM select CLKSRC_MMIO select TIMER_OF - select GENERIC_CLOCKEVENTS select GPIOLIB select PINCTRL select PM diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig index 48d66bf0465d..bdeeac28b1be 100644 --- a/arch/c6x/Kconfig +++ b/arch/c6x/Kconfig @@ -19,7 +19,6 @@ config C6X select IRQ_DOMAIN select OF select OF_EARLY_FLATTREE - select GENERIC_CLOCKEVENTS select MODULES_USE_ELF_RELA select MMU_GATHER_NO_RANGE if MMU select SET_FS diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 268fad5f51cf..28fdf8303dff 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -28,7 +28,6 @@ config CSKY select GENERIC_LIB_UCMPDI2 select GENERIC_ALLOCATOR select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS select GENERIC_CPU_DEVICES select GENERIC_IRQ_CHIP select GENERIC_IRQ_PROBE diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 7945de067e9f..3e3e0f16f7e0 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -12,7 +12,6 @@ config H8300 select FRAME_POINTER select GENERIC_CPU_DEVICES select MODULES_USE_ELF_RELA - select GENERIC_CLOCKEVENTS select COMMON_CLK select ARCH_WANT_FRAME_POINTERS select OF diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index f2afabbadd43..6e00c16a36b5 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -27,7 +27,6 @@ config HEXAGON select GENERIC_IOMAP select GENERIC_SMP_IDLE_THREAD select STACKTRACE_SUPPORT - select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST select MODULES_USE_ELF_RELA select GENERIC_CPU_DEVICES diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu index 648054d4f860..ce09f993d858 100644 --- a/arch/m68k/Kconfig.cpu +++ b/arch/m68k/Kconfig.cpu @@ -318,7 +318,6 @@ config M54xx config COLDFIRE_PIT_TIMER bool - select GENERIC_CLOCKEVENTS config COLDFIRE_TIMERS bool diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 33925ffed68f..2f0d3f431faf 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -17,7 +17,6 @@ config MICROBLAZE select COMMON_CLK select DMA_DIRECT_REMAP if MMU select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS select GENERIC_CPU_DEVICES select GENERIC_IDLE_POLL_SETUP select GENERIC_IRQ_PROBE diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 2000bb2b0220..077c4ae09550 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -21,7 +21,6 @@ config MIPS select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1) select CPU_PM if CPU_IDLE select GENERIC_ATOMIC64 if !64BIT - select GENERIC_CLOCKEVENTS select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE select GENERIC_GETTIMEOFDAY diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig index e8e541fd2267..62313902d75d 100644 --- a/arch/nds32/Kconfig +++ b/arch/nds32/Kconfig @@ -17,7 +17,6 @@ config NDS32 select DMA_DIRECT_REMAP select GENERIC_ATOMIC64 select GENERIC_CPU_DEVICES - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_CHIP select GENERIC_IRQ_SHOW select GENERIC_IOREMAP diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index c7c6ba6bec9d..c24955c81c92 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -10,7 +10,6 @@ config NIOS2 select COMMON_CLK select TIMER_OF select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS select GENERIC_CPU_DEVICES select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 6233c6293180..591acc5990dc 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -24,7 +24,6 @@ config OPENRISC select GENERIC_CPU_DEVICES select HAVE_UID16 select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index e9f13fe08492..57e2c75f76e9 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -163,7 +163,6 @@ config PPC select EDAC_ATOMIC_SCRUB select EDAC_SUPPORT select GENERIC_ATOMIC64 if PPC32 - select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 44377fd7860e..3842bbb4fe62 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -37,7 +37,6 @@ config RISCV select EDAC_SUPPORT select GENERIC_ARCH_TOPOLOGY if SMP select GENERIC_ATOMIC64 if !64BIT - select GENERIC_CLOCKEVENTS select GENERIC_EARLY_IOREMAP select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO select GENERIC_IOREMAP diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 4a2a12be04c9..db246781844d 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -116,7 +116,6 @@ config S390 select CLONE_BACKWARDS2 select DMA_OPS if PCI select DYNAMIC_FTRACE if FUNCTION_TRACER - select GENERIC_CLOCKEVENTS select GENERIC_CPU_AUTOPROBE select GENERIC_CPU_VULNERABILITIES select GENERIC_FIND_FIRST_BIT diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 159da4ed578f..5fa580219a86 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -16,7 +16,6 @@ config SUPERH select CPU_NO_EFFICIENT_FFS select DMA_DECLARE_COHERENT select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST select GENERIC_IDLE_POLL_SETUP select GENERIC_IRQ_SHOW diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index a6ca135442f9..718c51cf2c6c 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -39,7 +39,6 @@ config SPARC select HAVE_EBPF_JIT if SPARC64 select HAVE_DEBUG_BUGVERBOSE select GENERIC_SMP_IDLE_THREAD - select GENERIC_CLOCKEVENTS select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select MODULES_USE_ELF_RELA diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 4b799fad8b48..43333e36e0ba 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -17,7 +17,6 @@ config UML select NO_DMA select GENERIC_IRQ_SHOW select GENERIC_CPU_DEVICES - select GENERIC_CLOCKEVENTS select HAVE_GCC_PLUGINS select SET_FS select TTY # Needed for line.c diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f6946b81f74a..0498d7596ccc 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -108,7 +108,6 @@ config X86 select DCACHE_WORD_ACCESS select EDAC_ATOMIC_SCRUB select EDAC_SUPPORT - select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST if X86_64 || (X86_32 && X86_LOCAL_APIC) select GENERIC_CLOCKEVENTS_MIN_ADJUST select GENERIC_CMOS_UPDATE diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index d0dfa50bd0bb..2611ba336af8 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -16,7 +16,6 @@ config XTENSA select COMMON_CLK select DMA_REMAP if MMU select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS select GENERIC_IRQ_SHOW select GENERIC_PCI_IOMAP select GENERIC_SCHED_CLOCK diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index c6867f29d279..9a41848b6ebb 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -28,7 +28,7 @@ config GENERIC_TIME_VSYSCALL # The generic clock events infrastructure config GENERIC_CLOCKEVENTS - bool + def_bool !LEGACY_TIMER_TICK # Architecture can handle broadcast in a driver-agnostic way config ARCH_HAS_TICK_BROADCAST