mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
![Mike Rapoport](/assets/img/avatar_default.png)
Move remaining definitions and declarations from include/linux/bootmem.h into include/linux/memblock.h and remove the redundant header. The includes were replaced with the semantic patch below and then semi-automated removal of duplicated '#include <linux/memblock.h> @@ @@ - #include <linux/bootmem.h> + #include <linux/memblock.h> [sfr@canb.auug.org.au: dma-direct: fix up for the removal of linux/bootmem.h] Link: http://lkml.kernel.org/r/20181002185342.133d1680@canb.auug.org.au [sfr@canb.auug.org.au: powerpc: fix up for removal of linux/bootmem.h] Link: http://lkml.kernel.org/r/20181005161406.73ef8727@canb.auug.org.au [sfr@canb.auug.org.au: x86/kaslr, ACPI/NUMA: fix for linux/bootmem.h removal] Link: http://lkml.kernel.org/r/20181008190341.5e396491@canb.auug.org.au Link: http://lkml.kernel.org/r/1536927045-23536-30-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Michal Hocko <mhocko@suse.com> 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 Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Serge Semin <fancer.lancer@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
135 lines
2.6 KiB
C
135 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Re-map IO memory to kernel address space so that we can access it.
|
|
*
|
|
* These functions should only be used when it is necessary to map a
|
|
* physical address space into the kernel address space before ioremap()
|
|
* can be used, e.g. early in boot before paging_init().
|
|
*
|
|
* Copyright (C) 2009 Matt Fleming
|
|
*/
|
|
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/io.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <asm/fixmap.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgalloc.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/tlbflush.h>
|
|
#include <asm/mmu.h>
|
|
#include <asm/mmu_context.h>
|
|
|
|
struct ioremap_map {
|
|
void __iomem *addr;
|
|
unsigned long size;
|
|
unsigned long fixmap_addr;
|
|
};
|
|
|
|
static struct ioremap_map ioremap_maps[FIX_N_IOREMAPS];
|
|
|
|
void __init ioremap_fixed_init(void)
|
|
{
|
|
struct ioremap_map *map;
|
|
int i;
|
|
|
|
for (i = 0; i < FIX_N_IOREMAPS; i++) {
|
|
map = &ioremap_maps[i];
|
|
map->fixmap_addr = __fix_to_virt(FIX_IOREMAP_BEGIN + i);
|
|
}
|
|
}
|
|
|
|
void __init __iomem *
|
|
ioremap_fixed(phys_addr_t phys_addr, unsigned long size, pgprot_t prot)
|
|
{
|
|
enum fixed_addresses idx0, idx;
|
|
struct ioremap_map *map;
|
|
unsigned int nrpages;
|
|
unsigned long offset;
|
|
int i, slot;
|
|
|
|
/*
|
|
* Mappings have to be page-aligned
|
|
*/
|
|
offset = phys_addr & ~PAGE_MASK;
|
|
phys_addr &= PAGE_MASK;
|
|
size = PAGE_ALIGN(phys_addr + size) - phys_addr;
|
|
|
|
slot = -1;
|
|
for (i = 0; i < FIX_N_IOREMAPS; i++) {
|
|
map = &ioremap_maps[i];
|
|
if (!map->addr) {
|
|
map->size = size;
|
|
slot = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (slot < 0)
|
|
return NULL;
|
|
|
|
/*
|
|
* Mappings have to fit in the FIX_IOREMAP area.
|
|
*/
|
|
nrpages = size >> PAGE_SHIFT;
|
|
if (nrpages > FIX_N_IOREMAPS)
|
|
return NULL;
|
|
|
|
/*
|
|
* Ok, go for it..
|
|
*/
|
|
idx0 = FIX_IOREMAP_BEGIN + slot;
|
|
idx = idx0;
|
|
while (nrpages > 0) {
|
|
pgprot_val(prot) |= _PAGE_WIRED;
|
|
__set_fixmap(idx, phys_addr, prot);
|
|
phys_addr += PAGE_SIZE;
|
|
idx++;
|
|
--nrpages;
|
|
}
|
|
|
|
map->addr = (void __iomem *)(offset + map->fixmap_addr);
|
|
return map->addr;
|
|
}
|
|
|
|
int iounmap_fixed(void __iomem *addr)
|
|
{
|
|
enum fixed_addresses idx;
|
|
struct ioremap_map *map;
|
|
unsigned int nrpages;
|
|
int i, slot;
|
|
|
|
slot = -1;
|
|
for (i = 0; i < FIX_N_IOREMAPS; i++) {
|
|
map = &ioremap_maps[i];
|
|
if (map->addr == addr) {
|
|
slot = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we don't match, it's not for us.
|
|
*/
|
|
if (slot < 0)
|
|
return -EINVAL;
|
|
|
|
nrpages = map->size >> PAGE_SHIFT;
|
|
|
|
idx = FIX_IOREMAP_BEGIN + slot + nrpages - 1;
|
|
while (nrpages > 0) {
|
|
__clear_fixmap(idx, __pgprot(_PAGE_WIRED));
|
|
--idx;
|
|
--nrpages;
|
|
}
|
|
|
|
map->size = 0;
|
|
map->addr = NULL;
|
|
|
|
return 0;
|
|
}
|