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3dceb8a9a9
Updates: - Fixes from me to cleanup all compiler warnings reported under arch/openrisc. - One cleanup from Linus Walleij to convert pfn macros to static inlines. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE2cRzVK74bBA6Je/xw7McLV5mJ+QFAmT2LXMACgkQw7McLV5m J+QAlhAAwNrKSrwKBhO06R2MlJz7ls4CSRD1pceefRzLzCyCJJuGAr1eIXvHPspr eY8hgEva5hvhDE6Ey3GDTLUT5r8HHNGpdpYlolX0PIzmGpX/lEhD+kL12mcY3cym PsUA++GPJpldxY9wG99T2MZqvBbL6Wnd++heVeCytzfQJHRT2EeqH9eljryh1aoD sf9PAq59xjHPFsoZysKaTccmM8hM/PYAN06vSdFgk4HIAYvGOTyQ/4AP0HmJ4XkE TE/gdSqPOFq8avegwg6AlmegQvl3DVglVFeP7M8BosXDw8emaGyv7hB95gCchud2 EnFb8WE/BGOQQr05GpaPQGGjWxxMEFEwEMTPeFUbhybEzUKCy7ujpEiQ8zwdq/dp i3NSI2o07HaTDSYGzfCFVmP/R1ihraRVE8rzdfIK9a7rh1JSLE7tWv8rpSB5FWSA 0gIRI9VV4XPHfrudw7j4Dsun41X4AsvolaRaxCW83wHzT9sREKl1Xfo8WEtEeY2Z MXek4wLU81qU+PfgrVtPk2+uqp2tK3lMtElXTOqktKUs5hyN+52nTdOShiP8yQB5 jTPi/E5CVDlsMYUfueppJZE/nEHW93LmwW5Ktebmh92b2GeStZ33PVa9ItaVPDeT pqWUO5EiM/h9iTkZs+3RhbOWvcbRf7+H7c5xiGupaqvoS2YVfC4= =VGnr -----END PGP SIGNATURE----- Merge tag 'for-linus' of https://github.com/openrisc/linux Pull OpenRISC updates from Stafford Horne: - Fixes from me to cleanup all compiler warnings reported under arch/openrisc - One cleanup from Linus Walleij to convert pfn macros to static inlines * tag 'for-linus' of https://github.com/openrisc/linux: openrisc: Remove kernel-doc marker from ioremap comment openrisc: Remove unused tlb_init function openriac: Remove unused nommu_dump_state function openrisc: Include cpu.h and switch_to.h for prototypes openrisc: Add prototype for die to bug.h openrisc: Add prototype for show_registers to processor.h openrisc: Declare do_signal function as static openrisc: Add missing prototypes for assembly called fnctions openrisc: Make pfn accessors statics inlines
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* OpenRISC ioremap.c
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*
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* Linux architectural port borrowing liberally from similar works of
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* others. All original copyrights apply as per the original source
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* declaration.
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*
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* Modifications for the OpenRISC architecture:
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* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
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* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
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*/
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#include <linux/vmalloc.h>
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#include <linux/io.h>
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#include <linux/pgtable.h>
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#include <asm/pgalloc.h>
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#include <asm/fixmap.h>
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#include <asm/bug.h>
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#include <linux/sched.h>
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#include <asm/tlbflush.h>
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extern int mem_init_done;
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/*
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* OK, this one's a bit tricky... ioremap can get called before memory is
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* initialized (early serial console does this) and will want to alloc a page
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* for its mapping. No userspace pages will ever get allocated before memory
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* is initialized so this applies only to kernel pages. In the event that
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* this is called before memory is initialized we allocate the page using
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* the memblock infrastructure.
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*/
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pte_t __ref *pte_alloc_one_kernel(struct mm_struct *mm)
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{
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pte_t *pte;
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if (likely(mem_init_done)) {
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pte = (pte_t *)get_zeroed_page(GFP_KERNEL);
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} else {
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pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
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if (!pte)
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panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
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__func__, PAGE_SIZE, PAGE_SIZE);
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}
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return pte;
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}
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