mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 05:04:00 +08:00
57c8a661d9
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>
191 lines
4.1 KiB
C
191 lines
4.1 KiB
C
/*
|
|
* This file manages the translation entries for the IBM Calgary IOMMU.
|
|
*
|
|
* Derived from arch/powerpc/platforms/pseries/iommu.c
|
|
*
|
|
* Copyright (C) IBM Corporation, 2006
|
|
*
|
|
* Author: Jon Mason <jdmason@us.ibm.com>
|
|
* Author: Muli Ben-Yehuda <muli@il.ibm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/string.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/memblock.h>
|
|
#include <asm/tce.h>
|
|
#include <asm/calgary.h>
|
|
#include <asm/proto.h>
|
|
#include <asm/cacheflush.h>
|
|
|
|
/* flush a tce at 'tceaddr' to main memory */
|
|
static inline void flush_tce(void* tceaddr)
|
|
{
|
|
/* a single tce can't cross a cache line */
|
|
if (boot_cpu_has(X86_FEATURE_CLFLUSH))
|
|
clflush(tceaddr);
|
|
else
|
|
wbinvd();
|
|
}
|
|
|
|
void tce_build(struct iommu_table *tbl, unsigned long index,
|
|
unsigned int npages, unsigned long uaddr, int direction)
|
|
{
|
|
u64* tp;
|
|
u64 t;
|
|
u64 rpn;
|
|
|
|
t = (1 << TCE_READ_SHIFT);
|
|
if (direction != DMA_TO_DEVICE)
|
|
t |= (1 << TCE_WRITE_SHIFT);
|
|
|
|
tp = ((u64*)tbl->it_base) + index;
|
|
|
|
while (npages--) {
|
|
rpn = (virt_to_bus((void*)uaddr)) >> PAGE_SHIFT;
|
|
t &= ~TCE_RPN_MASK;
|
|
t |= (rpn << TCE_RPN_SHIFT);
|
|
|
|
*tp = cpu_to_be64(t);
|
|
flush_tce(tp);
|
|
|
|
uaddr += PAGE_SIZE;
|
|
tp++;
|
|
}
|
|
}
|
|
|
|
void tce_free(struct iommu_table *tbl, long index, unsigned int npages)
|
|
{
|
|
u64* tp;
|
|
|
|
tp = ((u64*)tbl->it_base) + index;
|
|
|
|
while (npages--) {
|
|
*tp = cpu_to_be64(0);
|
|
flush_tce(tp);
|
|
tp++;
|
|
}
|
|
}
|
|
|
|
static inline unsigned int table_size_to_number_of_entries(unsigned char size)
|
|
{
|
|
/*
|
|
* size is the order of the table, 0-7
|
|
* smallest table is 8K entries, so shift result by 13 to
|
|
* multiply by 8K
|
|
*/
|
|
return (1 << size) << 13;
|
|
}
|
|
|
|
static int tce_table_setparms(struct pci_dev *dev, struct iommu_table *tbl)
|
|
{
|
|
unsigned int bitmapsz;
|
|
unsigned long bmppages;
|
|
int ret;
|
|
|
|
tbl->it_busno = dev->bus->number;
|
|
|
|
/* set the tce table size - measured in entries */
|
|
tbl->it_size = table_size_to_number_of_entries(specified_table_size);
|
|
|
|
/*
|
|
* number of bytes needed for the bitmap size in number of
|
|
* entries; we need one bit per entry
|
|
*/
|
|
bitmapsz = tbl->it_size / BITS_PER_BYTE;
|
|
bmppages = __get_free_pages(GFP_KERNEL, get_order(bitmapsz));
|
|
if (!bmppages) {
|
|
printk(KERN_ERR "Calgary: cannot allocate bitmap\n");
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
tbl->it_map = (unsigned long*)bmppages;
|
|
|
|
memset(tbl->it_map, 0, bitmapsz);
|
|
|
|
tbl->it_hint = 0;
|
|
|
|
spin_lock_init(&tbl->it_lock);
|
|
|
|
return 0;
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
int __init build_tce_table(struct pci_dev *dev, void __iomem *bbar)
|
|
{
|
|
struct iommu_table *tbl;
|
|
int ret;
|
|
|
|
if (pci_iommu(dev->bus)) {
|
|
printk(KERN_ERR "Calgary: dev %p has sysdata->iommu %p\n",
|
|
dev, pci_iommu(dev->bus));
|
|
BUG();
|
|
}
|
|
|
|
tbl = kzalloc(sizeof(struct iommu_table), GFP_KERNEL);
|
|
if (!tbl) {
|
|
printk(KERN_ERR "Calgary: error allocating iommu_table\n");
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
ret = tce_table_setparms(dev, tbl);
|
|
if (ret)
|
|
goto free_tbl;
|
|
|
|
tbl->bbar = bbar;
|
|
|
|
set_pci_iommu(dev->bus, tbl);
|
|
|
|
return 0;
|
|
|
|
free_tbl:
|
|
kfree(tbl);
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
void * __init alloc_tce_table(void)
|
|
{
|
|
unsigned int size;
|
|
|
|
size = table_size_to_number_of_entries(specified_table_size);
|
|
size *= TCE_ENTRY_SIZE;
|
|
|
|
return memblock_alloc_low(size, size);
|
|
}
|
|
|
|
void __init free_tce_table(void *tbl)
|
|
{
|
|
unsigned int size;
|
|
|
|
if (!tbl)
|
|
return;
|
|
|
|
size = table_size_to_number_of_entries(specified_table_size);
|
|
size *= TCE_ENTRY_SIZE;
|
|
|
|
memblock_free(__pa(tbl), size);
|
|
}
|