linux_dsm_epyc7002/arch/m68k/mvme147/config.c
Mike Rapoport e31cf2f4ca mm: don't include asm/pgtable.h if linux/mm.h is already included
Patch series "mm: consolidate definitions of page table accessors", v2.

The low level page table accessors (pXY_index(), pXY_offset()) are
duplicated across all architectures and sometimes more than once.  For
instance, we have 31 definition of pgd_offset() for 25 supported
architectures.

Most of these definitions are actually identical and typically it boils
down to, e.g.

static inline unsigned long pmd_index(unsigned long address)
{
        return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}

static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
        return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}

These definitions can be shared among 90% of the arches provided
XYZ_SHIFT, PTRS_PER_XYZ and xyz_page_vaddr() are defined.

For architectures that really need a custom version there is always
possibility to override the generic version with the usual ifdefs magic.

These patches introduce include/linux/pgtable.h that replaces
include/asm-generic/pgtable.h and add the definitions of the page table
accessors to the new header.

This patch (of 12):

The linux/mm.h header includes <asm/pgtable.h> to allow inlining of the
functions involving page table manipulations, e.g.  pte_alloc() and
pmd_alloc().  So, there is no point to explicitly include <asm/pgtable.h>
in the files that include <linux/mm.h>.

The include statements in such cases are remove with a simple loop:

	for f in $(git grep -l "include <linux/mm.h>") ; do
		sed -i -e '/include <asm\/pgtable.h>/ d' $f
	done

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200514170327.31389-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-09 09:39:13 -07:00

189 lines
4.4 KiB
C

/*
* 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
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file README.legal in the main directory of this archive
* for more details.
*/
#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/genhd.h>
#include <linux/rtc.h>
#include <linux/interrupt.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>
static void mvme147_get_model(char *model);
extern void mvme147_sched_init(irq_handler_t handler);
extern int mvme147_hwclk (int, struct rtc_time *);
extern void mvme147_reset (void);
static int bcd2int (unsigned char b);
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.
*/
void __init mvme147_init_IRQ(void)
{
m68k_setup_user_interrupt(VEC_USER, 192);
}
void __init config_mvme147(void)
{
mach_max_dma_address = 0x01000000;
mach_sched_init = mvme147_sched_init;
mach_init_IRQ = mvme147_init_IRQ;
mach_hwclk = mvme147_hwclk;
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 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)
{
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);
local_irq_restore(flags);
return IRQ_HANDLED;
}
void mvme147_sched_init (irq_handler_t timer_routine)
{
if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, IRQF_TIMER,
"timer 1", timer_routine))
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 = 0x0; /* clear timer */
m147_pcc->t1_cntrl = 0x3; /* start timer */
m147_pcc->t1_int_cntrl = PCC_TIMER_INT_CLR; /* clear pending ints */
m147_pcc->t1_int_cntrl = PCC_INT_ENAB|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 int bcd2int (unsigned char b)
{
return ((b>>4)*10 + (b&15));
}
int mvme147_hwclk(int op, struct rtc_time *t)
{
#warning check me!
if (!op) {
m147_rtc->ctrl = RTC_READ;
t->tm_year = bcd2int (m147_rtc->bcd_year);
t->tm_mon = bcd2int(m147_rtc->bcd_mth) - 1;
t->tm_mday = bcd2int (m147_rtc->bcd_dom);
t->tm_hour = bcd2int (m147_rtc->bcd_hr);
t->tm_min = bcd2int (m147_rtc->bcd_min);
t->tm_sec = bcd2int (m147_rtc->bcd_sec);
m147_rtc->ctrl = 0;
if (t->tm_year < 70)
t->tm_year += 100;
}
return 0;
}