mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-28 13:22:57 +00:00
e31cf2f4ca
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>
444 lines
12 KiB
C
444 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/alpha/kernel/sys_cabriolet.c
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*
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* Copyright (C) 1995 David A Rusling
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* Copyright (C) 1996 Jay A Estabrook
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* Copyright (C) 1998, 1999, 2000 Richard Henderson
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*
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* Code supporting the Cabriolet (AlphaPC64), EB66+, and EB164,
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* PC164 and LX164.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <asm/ptrace.h>
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#include <asm/dma.h>
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#include <asm/irq.h>
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#include <asm/mmu_context.h>
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#include <asm/io.h>
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#include <asm/core_apecs.h>
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#include <asm/core_cia.h>
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#include <asm/core_lca.h>
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#include <asm/tlbflush.h>
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#include "proto.h"
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#include "irq_impl.h"
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#include "pci_impl.h"
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#include "machvec_impl.h"
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#include "pc873xx.h"
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/* Note mask bit is true for DISABLED irqs. */
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static unsigned long cached_irq_mask = ~0UL;
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static inline void
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cabriolet_update_irq_hw(unsigned int irq, unsigned long mask)
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{
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int ofs = (irq - 16) / 8;
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outb(mask >> (16 + ofs * 8), 0x804 + ofs);
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}
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static inline void
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cabriolet_enable_irq(struct irq_data *d)
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{
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cabriolet_update_irq_hw(d->irq, cached_irq_mask &= ~(1UL << d->irq));
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}
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static void
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cabriolet_disable_irq(struct irq_data *d)
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{
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cabriolet_update_irq_hw(d->irq, cached_irq_mask |= 1UL << d->irq);
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}
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static struct irq_chip cabriolet_irq_type = {
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.name = "CABRIOLET",
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.irq_unmask = cabriolet_enable_irq,
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.irq_mask = cabriolet_disable_irq,
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.irq_mask_ack = cabriolet_disable_irq,
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};
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static void
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cabriolet_device_interrupt(unsigned long v)
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{
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unsigned long pld;
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unsigned int i;
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/* Read the interrupt summary registers */
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pld = inb(0x804) | (inb(0x805) << 8) | (inb(0x806) << 16);
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/*
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* Now for every possible bit set, work through them and call
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* the appropriate interrupt handler.
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*/
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while (pld) {
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i = ffz(~pld);
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pld &= pld - 1; /* clear least bit set */
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if (i == 4) {
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isa_device_interrupt(v);
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} else {
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handle_irq(16 + i);
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}
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}
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}
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static void __init
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common_init_irq(void (*srm_dev_int)(unsigned long v))
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{
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init_i8259a_irqs();
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if (alpha_using_srm) {
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alpha_mv.device_interrupt = srm_dev_int;
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init_srm_irqs(35, 0);
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}
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else {
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long i;
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outb(0xff, 0x804);
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outb(0xff, 0x805);
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outb(0xff, 0x806);
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for (i = 16; i < 35; ++i) {
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irq_set_chip_and_handler(i, &cabriolet_irq_type,
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handle_level_irq);
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irq_set_status_flags(i, IRQ_LEVEL);
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}
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}
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common_init_isa_dma();
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if (request_irq(16 + 4, no_action, 0, "isa-cascade", NULL))
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pr_err("Failed to register isa-cascade interrupt\n");
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}
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#ifndef CONFIG_ALPHA_PC164
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static void __init
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cabriolet_init_irq(void)
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{
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common_init_irq(srm_device_interrupt);
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}
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#endif
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#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_PC164)
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/* In theory, the PC164 has the same interrupt hardware as the other
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Cabriolet based systems. However, something got screwed up late
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in the development cycle which broke the interrupt masking hardware.
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Repeat, it is not possible to mask and ack interrupts. At all.
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In an attempt to work around this, while processing interrupts,
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we do not allow the IPL to drop below what it is currently. This
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prevents the possibility of recursion.
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??? Another option might be to force all PCI devices to use edge
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triggered rather than level triggered interrupts. That might be
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too invasive though. */
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static void
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pc164_srm_device_interrupt(unsigned long v)
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{
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__min_ipl = getipl();
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srm_device_interrupt(v);
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__min_ipl = 0;
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}
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static void
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pc164_device_interrupt(unsigned long v)
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{
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__min_ipl = getipl();
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cabriolet_device_interrupt(v);
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__min_ipl = 0;
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}
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static void __init
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pc164_init_irq(void)
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{
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common_init_irq(pc164_srm_device_interrupt);
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}
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#endif
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/*
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* The EB66+ is very similar to the EB66 except that it does not have
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* the on-board NCR and Tulip chips. In the code below, I have used
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* slot number to refer to the id select line and *not* the slot
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* number used in the EB66+ documentation. However, in the table,
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* I've given the slot number, the id select line and the Jxx number
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* that's printed on the board. The interrupt pins from the PCI slots
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* are wired into 3 interrupt summary registers at 0x804, 0x805 and
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* 0x806 ISA.
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*
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* In the table, -1 means don't assign an IRQ number. This is usually
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* because it is the Saturn IO (SIO) PCI/ISA Bridge Chip.
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*/
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static inline int
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eb66p_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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static char irq_tab[5][5] = {
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/*INT INTA INTB INTC INTD */
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{16+0, 16+0, 16+5, 16+9, 16+13}, /* IdSel 6, slot 0, J25 */
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{16+1, 16+1, 16+6, 16+10, 16+14}, /* IdSel 7, slot 1, J26 */
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{ -1, -1, -1, -1, -1}, /* IdSel 8, SIO */
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{16+2, 16+2, 16+7, 16+11, 16+15}, /* IdSel 9, slot 2, J27 */
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{16+3, 16+3, 16+8, 16+12, 16+6} /* IdSel 10, slot 3, J28 */
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};
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const long min_idsel = 6, max_idsel = 10, irqs_per_slot = 5;
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return COMMON_TABLE_LOOKUP;
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}
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/*
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* The AlphaPC64 is very similar to the EB66+ except that its slots
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* are numbered differently. In the code below, I have used slot
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* number to refer to the id select line and *not* the slot number
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* used in the AlphaPC64 documentation. However, in the table, I've
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* given the slot number, the id select line and the Jxx number that's
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* printed on the board. The interrupt pins from the PCI slots are
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* wired into 3 interrupt summary registers at 0x804, 0x805 and 0x806
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* ISA.
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*
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* In the table, -1 means don't assign an IRQ number. This is usually
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* because it is the Saturn IO (SIO) PCI/ISA Bridge Chip.
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*/
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static inline int
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cabriolet_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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static char irq_tab[5][5] = {
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/*INT INTA INTB INTC INTD */
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{ 16+2, 16+2, 16+7, 16+11, 16+15}, /* IdSel 5, slot 2, J21 */
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{ 16+0, 16+0, 16+5, 16+9, 16+13}, /* IdSel 6, slot 0, J19 */
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{ 16+1, 16+1, 16+6, 16+10, 16+14}, /* IdSel 7, slot 1, J20 */
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{ -1, -1, -1, -1, -1}, /* IdSel 8, SIO */
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{ 16+3, 16+3, 16+8, 16+12, 16+16} /* IdSel 9, slot 3, J22 */
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};
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const long min_idsel = 5, max_idsel = 9, irqs_per_slot = 5;
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return COMMON_TABLE_LOOKUP;
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}
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static inline void __init
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cabriolet_enable_ide(void)
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{
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if (pc873xx_probe() == -1) {
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printk(KERN_ERR "Probing for PC873xx Super IO chip failed.\n");
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} else {
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printk(KERN_INFO "Found %s Super IO chip at 0x%x\n",
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pc873xx_get_model(), pc873xx_get_base());
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pc873xx_enable_ide();
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}
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}
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static inline void __init
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cabriolet_init_pci(void)
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{
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common_init_pci();
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cabriolet_enable_ide();
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}
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static inline void __init
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cia_cab_init_pci(void)
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{
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cia_init_pci();
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cabriolet_enable_ide();
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}
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/*
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* The PC164 and LX164 have 19 PCI interrupts, four from each of the four
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* PCI slots, the SIO, PCI/IDE, and USB.
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*
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* Each of the interrupts can be individually masked. This is
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* accomplished by setting the appropriate bit in the mask register.
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* A bit is set by writing a "1" to the desired position in the mask
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* register and cleared by writing a "0". There are 3 mask registers
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* located at ISA address 804h, 805h and 806h.
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*
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* An I/O read at ISA address 804h, 805h, 806h will return the
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* state of the 11 PCI interrupts and not the state of the MASKED
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* interrupts.
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*
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* Note: A write to I/O 804h, 805h, and 806h the mask register will be
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* updated.
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*
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*
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* ISA DATA<7:0>
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* ISA +--------------------------------------------------------------+
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* ADDRESS | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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* +==============================================================+
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* 0x804 | INTB0 | USB | IDE | SIO | INTA3 |INTA2 | INTA1 | INTA0 |
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* +--------------------------------------------------------------+
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* 0x805 | INTD0 | INTC3 | INTC2 | INTC1 | INTC0 |INTB3 | INTB2 | INTB1 |
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* +--------------------------------------------------------------+
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* 0x806 | Rsrv | Rsrv | Rsrv | Rsrv | Rsrv |INTD3 | INTD2 | INTD1 |
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* +--------------------------------------------------------------+
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* * Rsrv = reserved bits
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* Note: The mask register is write-only.
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*
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* IdSel
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* 5 32 bit PCI option slot 2
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* 6 64 bit PCI option slot 0
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* 7 64 bit PCI option slot 1
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* 8 Saturn I/O
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* 9 32 bit PCI option slot 3
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* 10 USB
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* 11 IDE
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*
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*/
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static inline int
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alphapc164_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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static char irq_tab[7][5] = {
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/*INT INTA INTB INTC INTD */
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{ 16+2, 16+2, 16+9, 16+13, 16+17}, /* IdSel 5, slot 2, J20 */
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{ 16+0, 16+0, 16+7, 16+11, 16+15}, /* IdSel 6, slot 0, J29 */
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{ 16+1, 16+1, 16+8, 16+12, 16+16}, /* IdSel 7, slot 1, J26 */
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{ -1, -1, -1, -1, -1}, /* IdSel 8, SIO */
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{ 16+3, 16+3, 16+10, 16+14, 16+18}, /* IdSel 9, slot 3, J19 */
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{ 16+6, 16+6, 16+6, 16+6, 16+6}, /* IdSel 10, USB */
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{ 16+5, 16+5, 16+5, 16+5, 16+5} /* IdSel 11, IDE */
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};
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const long min_idsel = 5, max_idsel = 11, irqs_per_slot = 5;
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return COMMON_TABLE_LOOKUP;
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}
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static inline void __init
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alphapc164_init_pci(void)
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{
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cia_init_pci();
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SMC93x_Init();
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}
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/*
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* The System Vector
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*/
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#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_CABRIOLET)
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struct alpha_machine_vector cabriolet_mv __initmv = {
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.vector_name = "Cabriolet",
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DO_EV4_MMU,
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DO_DEFAULT_RTC,
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DO_APECS_IO,
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.machine_check = apecs_machine_check,
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.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
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.min_io_address = DEFAULT_IO_BASE,
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.min_mem_address = APECS_AND_LCA_DEFAULT_MEM_BASE,
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.nr_irqs = 35,
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.device_interrupt = cabriolet_device_interrupt,
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.init_arch = apecs_init_arch,
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.init_irq = cabriolet_init_irq,
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.init_rtc = common_init_rtc,
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.init_pci = cabriolet_init_pci,
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.pci_map_irq = cabriolet_map_irq,
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.pci_swizzle = common_swizzle,
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};
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#ifndef CONFIG_ALPHA_EB64P
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ALIAS_MV(cabriolet)
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#endif
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#endif
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#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EB164)
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struct alpha_machine_vector eb164_mv __initmv = {
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.vector_name = "EB164",
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DO_EV5_MMU,
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DO_DEFAULT_RTC,
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DO_CIA_IO,
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.machine_check = cia_machine_check,
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.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
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.min_io_address = DEFAULT_IO_BASE,
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.min_mem_address = CIA_DEFAULT_MEM_BASE,
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.nr_irqs = 35,
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.device_interrupt = cabriolet_device_interrupt,
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.init_arch = cia_init_arch,
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.init_irq = cabriolet_init_irq,
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.init_rtc = common_init_rtc,
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.init_pci = cia_cab_init_pci,
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.kill_arch = cia_kill_arch,
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.pci_map_irq = cabriolet_map_irq,
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.pci_swizzle = common_swizzle,
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};
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ALIAS_MV(eb164)
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#endif
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#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EB66P)
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struct alpha_machine_vector eb66p_mv __initmv = {
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.vector_name = "EB66+",
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DO_EV4_MMU,
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DO_DEFAULT_RTC,
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DO_LCA_IO,
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.machine_check = lca_machine_check,
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.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
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.min_io_address = DEFAULT_IO_BASE,
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.min_mem_address = APECS_AND_LCA_DEFAULT_MEM_BASE,
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.nr_irqs = 35,
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.device_interrupt = cabriolet_device_interrupt,
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.init_arch = lca_init_arch,
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.init_irq = cabriolet_init_irq,
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.init_rtc = common_init_rtc,
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.init_pci = cabriolet_init_pci,
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.pci_map_irq = eb66p_map_irq,
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.pci_swizzle = common_swizzle,
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};
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ALIAS_MV(eb66p)
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#endif
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#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LX164)
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struct alpha_machine_vector lx164_mv __initmv = {
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.vector_name = "LX164",
|
|
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 = 35,
|
|
.device_interrupt = cabriolet_device_interrupt,
|
|
|
|
.init_arch = pyxis_init_arch,
|
|
.init_irq = cabriolet_init_irq,
|
|
.init_rtc = common_init_rtc,
|
|
.init_pci = alphapc164_init_pci,
|
|
.kill_arch = cia_kill_arch,
|
|
.pci_map_irq = alphapc164_map_irq,
|
|
.pci_swizzle = common_swizzle,
|
|
};
|
|
ALIAS_MV(lx164)
|
|
#endif
|
|
|
|
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_PC164)
|
|
struct alpha_machine_vector pc164_mv __initmv = {
|
|
.vector_name = "PC164",
|
|
DO_EV5_MMU,
|
|
DO_DEFAULT_RTC,
|
|
DO_CIA_IO,
|
|
.machine_check = cia_machine_check,
|
|
.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
|
|
.min_io_address = DEFAULT_IO_BASE,
|
|
.min_mem_address = CIA_DEFAULT_MEM_BASE,
|
|
|
|
.nr_irqs = 35,
|
|
.device_interrupt = pc164_device_interrupt,
|
|
|
|
.init_arch = cia_init_arch,
|
|
.init_irq = pc164_init_irq,
|
|
.init_rtc = common_init_rtc,
|
|
.init_pci = alphapc164_init_pci,
|
|
.kill_arch = cia_kill_arch,
|
|
.pci_map_irq = alphapc164_map_irq,
|
|
.pci_swizzle = common_swizzle,
|
|
};
|
|
ALIAS_MV(pc164)
|
|
#endif
|