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| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/m68k/mvme147 | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'arch/m68k/mvme147')
| -rw-r--r-- | arch/m68k/mvme147/Makefile | 6 | ||||
| -rw-r--r-- | arch/m68k/mvme147/config.c | 210 | ||||
| -rw-r--r-- | arch/m68k/mvme147/mvme147.h | 6 |
3 files changed, 222 insertions, 0 deletions
diff --git a/arch/m68k/mvme147/Makefile b/arch/m68k/mvme147/Makefile new file mode 100644 index 000000000..d78f6f9fa --- /dev/null +++ b/arch/m68k/mvme147/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Makefile for Linux arch/m68k/mvme147 source directory +# + +obj-y := config.o diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c new file mode 100644 index 000000000..3054d3857 --- /dev/null +++ b/arch/m68k/mvme147/config.c @@ -0,0 +1,210 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * arch/m68k/mvme147/config.c + * + * Copyright (C) 1996 Dave Frascone [chaos@mindspring.com] + * Cloned from Richard Hirst [richard@sleepie.demon.co.uk] + * + * Based on: + * + * Copyright (C) 1993 Hamish Macdonald + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/clocksource.h> +#include <linux/console.h> +#include <linux/linkage.h> +#include <linux/init.h> +#include <linux/major.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/rtc/m48t59.h> + +#include <asm/bootinfo.h> +#include <asm/bootinfo-vme.h> +#include <asm/byteorder.h> +#include <asm/setup.h> +#include <asm/irq.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/mvme147hw.h> +#include <asm/config.h> + +#include "mvme147.h" + +static void mvme147_get_model(char *model); +static void __init mvme147_sched_init(void); +extern void mvme147_reset (void); + + +int __init mvme147_parse_bootinfo(const struct bi_record *bi) +{ + uint16_t tag = be16_to_cpu(bi->tag); + if (tag == BI_VME_TYPE || tag == BI_VME_BRDINFO) + return 0; + else + return 1; +} + +void mvme147_reset(void) +{ + pr_info("\r\n\nCalled mvme147_reset\r\n"); + m147_pcc->watchdog = 0x0a; /* Clear timer */ + m147_pcc->watchdog = 0xa5; /* Enable watchdog - 100ms to reset */ + while (1) + ; +} + +static void mvme147_get_model(char *model) +{ + sprintf(model, "Motorola MVME147"); +} + +/* + * This function is called during kernel startup to initialize + * the mvme147 IRQ handling routines. + */ + +static void __init mvme147_init_IRQ(void) +{ + m68k_setup_user_interrupt(VEC_USER, 192); +} + +void __init config_mvme147(void) +{ + mach_sched_init = mvme147_sched_init; + mach_init_IRQ = mvme147_init_IRQ; + mach_reset = mvme147_reset; + mach_get_model = mvme147_get_model; + + /* Board type is only set by newer versions of vmelilo/tftplilo */ + if (!vme_brdtype) + vme_brdtype = VME_TYPE_MVME147; +} + +static struct resource m48t59_rsrc[] = { + DEFINE_RES_MEM(MVME147_RTC_BASE, 0x800), +}; + +static struct m48t59_plat_data m48t59_data = { + .type = M48T59RTC_TYPE_M48T02, + .yy_offset = 70, +}; + +static int __init mvme147_platform_init(void) +{ + if (!MACH_IS_MVME147) + return 0; + + platform_device_register_resndata(NULL, "rtc-m48t59", -1, + m48t59_rsrc, ARRAY_SIZE(m48t59_rsrc), + &m48t59_data, sizeof(m48t59_data)); + return 0; +} + +arch_initcall(mvme147_platform_init); + +static u64 mvme147_read_clk(struct clocksource *cs); + +static struct clocksource mvme147_clk = { + .name = "pcc", + .rating = 250, + .read = mvme147_read_clk, + .mask = CLOCKSOURCE_MASK(32), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +static u32 clk_total; + +#define PCC_TIMER_CLOCK_FREQ 160000 +#define PCC_TIMER_CYCLES (PCC_TIMER_CLOCK_FREQ / HZ) +#define PCC_TIMER_PRELOAD (0x10000 - PCC_TIMER_CYCLES) + +/* Using pcc tick timer 1 */ + +static irqreturn_t mvme147_timer_int (int irq, void *dev_id) +{ + unsigned long flags; + + local_irq_save(flags); + m147_pcc->t1_cntrl = PCC_TIMER_CLR_OVF | PCC_TIMER_COC_EN | + PCC_TIMER_TIC_EN; + m147_pcc->t1_int_cntrl = PCC_INT_ENAB | PCC_TIMER_INT_CLR | + PCC_LEVEL_TIMER1; + clk_total += PCC_TIMER_CYCLES; + legacy_timer_tick(1); + local_irq_restore(flags); + + return IRQ_HANDLED; +} + + +static void __init mvme147_sched_init(void) +{ + if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, IRQF_TIMER, + "timer 1", NULL)) + pr_err("Couldn't register timer interrupt\n"); + + /* Init the clock with a value */ + /* The clock counter increments until 0xFFFF then reloads */ + m147_pcc->t1_preload = PCC_TIMER_PRELOAD; + m147_pcc->t1_cntrl = PCC_TIMER_CLR_OVF | PCC_TIMER_COC_EN | + PCC_TIMER_TIC_EN; + m147_pcc->t1_int_cntrl = PCC_INT_ENAB | PCC_TIMER_INT_CLR | + PCC_LEVEL_TIMER1; + + clocksource_register_hz(&mvme147_clk, PCC_TIMER_CLOCK_FREQ); +} + +static u64 mvme147_read_clk(struct clocksource *cs) +{ + unsigned long flags; + u8 overflow, tmp; + u16 count; + u32 ticks; + + local_irq_save(flags); + tmp = m147_pcc->t1_cntrl >> 4; + count = m147_pcc->t1_count; + overflow = m147_pcc->t1_cntrl >> 4; + if (overflow != tmp) + count = m147_pcc->t1_count; + count -= PCC_TIMER_PRELOAD; + ticks = count + overflow * PCC_TIMER_CYCLES; + ticks += clk_total; + local_irq_restore(flags); + + return ticks; +} + +static void scc_delay(void) +{ + __asm__ __volatile__ ("nop; nop;"); +} + +static void scc_write(char ch) +{ + do { + scc_delay(); + } while (!(in_8(M147_SCC_A_ADDR) & BIT(2))); + scc_delay(); + out_8(M147_SCC_A_ADDR, 8); + scc_delay(); + out_8(M147_SCC_A_ADDR, ch); +} + +void mvme147_scc_write(struct console *co, const char *str, unsigned int count) +{ + unsigned long flags; + + local_irq_save(flags); + while (count--) { + if (*str == '\n') + scc_write('\r'); + scc_write(*str++); + } + local_irq_restore(flags); +} diff --git a/arch/m68k/mvme147/mvme147.h b/arch/m68k/mvme147/mvme147.h new file mode 100644 index 000000000..140bc98b0 --- /dev/null +++ b/arch/m68k/mvme147/mvme147.h @@ -0,0 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +struct console; + +/* config.c */ +void mvme147_scc_write(struct console *co, const char *str, unsigned int count); |
