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linux/arch/alpha/kernel/sys_sx164.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

180 lines
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// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/alpha/kernel/sys_sx164.c
*
* Copyright (C) 1995 David A Rusling
* Copyright (C) 1996 Jay A Estabrook
* Copyright (C) 1998, 1999, 2000 Richard Henderson
*
* Code supporting the SX164 (PCA56+PYXIS).
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <asm/ptrace.h>
#include <asm/dma.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/io.h>
#include <asm/core_cia.h>
#include <asm/hwrpb.h>
#include <asm/tlbflush.h>
#include <asm/special_insns.h>
#include "proto.h"
#include "irq_impl.h"
#include "pci_impl.h"
#include "machvec_impl.h"
static void __init
sx164_init_irq(void)
{
outb(0, DMA1_RESET_REG);
outb(0, DMA2_RESET_REG);
outb(DMA_MODE_CASCADE, DMA2_MODE_REG);
outb(0, DMA2_MASK_REG);
if (alpha_using_srm)
alpha_mv.device_interrupt = srm_device_interrupt;
init_i8259a_irqs();
/* Not interested in the bogus interrupts (0,3,4,5,40-47),
NMI (1), or HALT (2). */
if (alpha_using_srm)
init_srm_irqs(40, 0x3f0000);
else
init_pyxis_irqs(0xff00003f0000UL);
if (request_irq(16 + 6, no_action, 0, "timer-cascade", NULL))
pr_err("Failed to register timer-cascade interrupt\n");
}
/*
* PCI Fixup configuration.
*
* Summary @ PYXIS_INT_REQ:
* Bit Meaning
* 0 RSVD
* 1 NMI
* 2 Halt/Reset switch
* 3 MBZ
* 4 RAZ
* 5 RAZ
* 6 Interval timer (RTC)
* 7 PCI-ISA Bridge
* 8 Interrupt Line A from slot 3
* 9 Interrupt Line A from slot 2
*10 Interrupt Line A from slot 1
*11 Interrupt Line A from slot 0
*12 Interrupt Line B from slot 3
*13 Interrupt Line B from slot 2
*14 Interrupt Line B from slot 1
*15 Interrupt line B from slot 0
*16 Interrupt Line C from slot 3
*17 Interrupt Line C from slot 2
*18 Interrupt Line C from slot 1
*19 Interrupt Line C from slot 0
*20 Interrupt Line D from slot 3
*21 Interrupt Line D from slot 2
*22 Interrupt Line D from slot 1
*23 Interrupt Line D from slot 0
*
* IdSel
* 5 32 bit PCI option slot 2
* 6 64 bit PCI option slot 0
* 7 64 bit PCI option slot 1
* 8 Cypress I/O
* 9 32 bit PCI option slot 3
*/
static int
sx164_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
static char irq_tab[5][5] = {
/*INT INTA INTB INTC INTD */
{ 16+ 9, 16+ 9, 16+13, 16+17, 16+21}, /* IdSel 5 slot 2 J17 */
{ 16+11, 16+11, 16+15, 16+19, 16+23}, /* IdSel 6 slot 0 J19 */
{ 16+10, 16+10, 16+14, 16+18, 16+22}, /* IdSel 7 slot 1 J18 */
{ -1, -1, -1, -1, -1}, /* IdSel 8 SIO */
{ 16+ 8, 16+ 8, 16+12, 16+16, 16+20} /* IdSel 9 slot 3 J15 */
};
const long min_idsel = 5, max_idsel = 9, irqs_per_slot = 5;
return COMMON_TABLE_LOOKUP;
}
static void __init
sx164_init_pci(void)
{
cia_init_pci();
SMC669_Init(0);
}
static void __init
sx164_init_arch(void)
{
/*
* OSF palcode v1.23 forgets to enable PCA56 Motion Video
* Instructions. Let's enable it.
* We have to check palcode revision because CSERVE interface
* is subject to change without notice. For example, it
* has been changed completely since v1.16 (found in MILO
* distribution). -ink
*/
struct percpu_struct *cpu = (struct percpu_struct*)
((char*)hwrpb + hwrpb->processor_offset);
if (amask(AMASK_MAX) != 0
&& alpha_using_srm
&& (cpu->pal_revision & 0xffff) <= 0x117) {
__asm__ __volatile__(
"lda $16,8($31)\n"
"call_pal 9\n" /* Allow PALRES insns in kernel mode */
".long 0x64000118\n\n" /* hw_mfpr $0,icsr */
"ldah $16,(1<<(19-16))($31)\n"
"or $0,$16,$0\n" /* set MVE bit */
".long 0x74000118\n" /* hw_mtpr $0,icsr */
"lda $16,9($31)\n"
"call_pal 9" /* Disable PALRES insns */
: : : "$0", "$16");
printk("PCA56 MVI set enabled\n");
}
pyxis_init_arch();
}
/*
* The System Vector
*/
struct alpha_machine_vector sx164_mv __initmv = {
.vector_name = "SX164",
DO_EV5_MMU,
DO_DEFAULT_RTC,
DO_PYXIS_IO,
.machine_check = cia_machine_check,
.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
.min_io_address = DEFAULT_IO_BASE,
.min_mem_address = DEFAULT_MEM_BASE,
.pci_dac_offset = PYXIS_DAC_OFFSET,
.nr_irqs = 48,
.device_interrupt = pyxis_device_interrupt,
.init_arch = sx164_init_arch,
.init_irq = sx164_init_irq,
.init_rtc = common_init_rtc,
.init_pci = sx164_init_pci,
.kill_arch = cia_kill_arch,
.pci_map_irq = sx164_map_irq,
.pci_swizzle = common_swizzle,
};
ALIAS_MV(sx164)
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