![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>
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
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* DMA implementation for Hexagon
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*
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* Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <linux/dma-noncoherent.h>
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#include <linux/memblock.h>
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#include <linux/genalloc.h>
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#include <linux/module.h>
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#include <asm/page.h>
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static struct gen_pool *coherent_pool;
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/* Allocates from a pool of uncached memory that was reserved at boot time */
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void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_addr,
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gfp_t flag, unsigned long attrs)
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{
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void *ret;
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/*
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* Our max_low_pfn should have been backed off by 16MB in
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* mm/init.c to create DMA coherent space. Use that as the VA
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* for the pool.
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*/
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if (coherent_pool == NULL) {
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coherent_pool = gen_pool_create(PAGE_SHIFT, -1);
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if (coherent_pool == NULL)
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panic("Can't create %s() memory pool!", __func__);
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else
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gen_pool_add(coherent_pool,
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(unsigned long)pfn_to_virt(max_low_pfn),
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hexagon_coherent_pool_size, -1);
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}
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ret = (void *) gen_pool_alloc(coherent_pool, size);
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if (ret) {
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memset(ret, 0, size);
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*dma_addr = (dma_addr_t) virt_to_phys(ret);
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} else
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*dma_addr = ~0;
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return ret;
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}
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void arch_dma_free(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_addr, unsigned long attrs)
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{
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gen_pool_free(coherent_pool, (unsigned long) vaddr, size);
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}
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void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr,
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size_t size, enum dma_data_direction dir)
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{
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void *addr = phys_to_virt(paddr);
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switch (dir) {
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case DMA_TO_DEVICE:
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hexagon_clean_dcache_range((unsigned long) addr,
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(unsigned long) addr + size);
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break;
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case DMA_FROM_DEVICE:
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hexagon_inv_dcache_range((unsigned long) addr,
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(unsigned long) addr + size);
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break;
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case DMA_BIDIRECTIONAL:
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flush_dcache_range((unsigned long) addr,
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(unsigned long) addr + size);
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break;
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default:
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BUG();
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}
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}
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