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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
224 lines
5.5 KiB
C
224 lines
5.5 KiB
C
/*
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* linux/arch/m68k/sun3/config.c
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*
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* Copyright (C) 1996,1997 Pekka Pietik{inen
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/seq_file.h>
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#include <linux/tty.h>
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#include <linux/console.h>
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#include <linux/init.h>
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#include <linux/memblock.h>
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#include <linux/platform_device.h>
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#include <asm/oplib.h>
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#include <asm/setup.h>
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#include <asm/contregs.h>
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#include <asm/movs.h>
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#include <asm/pgalloc.h>
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#include <asm/sun3-head.h>
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#include <asm/sun3mmu.h>
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#include <asm/machdep.h>
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#include <asm/machines.h>
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#include <asm/idprom.h>
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#include <asm/intersil.h>
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#include <asm/irq.h>
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#include <asm/sections.h>
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#include <asm/segment.h>
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#include <asm/sun3ints.h>
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char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
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static void sun3_sched_init(irq_handler_t handler);
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extern void sun3_get_model (char* model);
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extern int sun3_hwclk(int set, struct rtc_time *t);
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volatile char* clock_va;
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extern unsigned long availmem;
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unsigned long num_pages;
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static void sun3_get_hardware_list(struct seq_file *m)
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{
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seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
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}
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void __init sun3_init(void)
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{
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unsigned char enable_register;
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int i;
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m68k_machtype= MACH_SUN3;
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m68k_cputype = CPU_68020;
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m68k_fputype = FPU_68881; /* mc68881 actually */
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m68k_mmutype = MMU_SUN3;
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clock_va = (char *) 0xfe06000; /* dark */
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sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */
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sun3_disable_interrupts();
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prom_init((void *)LINUX_OPPROM_BEGVM);
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GET_CONTROL_BYTE(AC_SENABLE,enable_register);
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enable_register |= 0x50; /* Enable FPU */
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SET_CONTROL_BYTE(AC_SENABLE,enable_register);
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GET_CONTROL_BYTE(AC_SENABLE,enable_register);
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/* This code looks suspicious, because it doesn't subtract
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memory belonging to the kernel from the available space */
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memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
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/* Reserve important PMEGS */
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/* FIXME: These should be probed instead of hardcoded */
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for (i=0; i<8; i++) /* Kernel PMEGs */
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sun3_reserved_pmeg[i] = 1;
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sun3_reserved_pmeg[247] = 1; /* ROM mapping */
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sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
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sun3_reserved_pmeg[251] = 1; /* VB area */
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sun3_reserved_pmeg[254] = 1; /* main I/O */
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sun3_reserved_pmeg[249] = 1;
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sun3_reserved_pmeg[252] = 1;
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sun3_reserved_pmeg[253] = 1;
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set_fs(KERNEL_DS);
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}
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/* Without this, Bad Things happen when something calls arch_reset. */
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static void sun3_reboot (void)
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{
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prom_reboot ("vmlinux");
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}
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static void sun3_halt (void)
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{
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prom_halt ();
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}
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/* sun3 bootmem allocation */
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static void __init sun3_bootmem_alloc(unsigned long memory_start,
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unsigned long memory_end)
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{
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unsigned long start_page;
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/* align start/end to page boundaries */
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memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK);
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memory_end = memory_end & PAGE_MASK;
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start_page = __pa(memory_start) >> PAGE_SHIFT;
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max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
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high_memory = (void *)memory_end;
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availmem = memory_start;
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m68k_setup_node(0);
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}
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void __init config_sun3(void)
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{
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unsigned long memory_start, memory_end;
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pr_info("ARCH: SUN3\n");
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idprom_init();
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/* Subtract kernel memory from available memory */
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mach_sched_init = sun3_sched_init;
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mach_init_IRQ = sun3_init_IRQ;
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mach_reset = sun3_reboot;
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mach_get_model = sun3_get_model;
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mach_hwclk = sun3_hwclk;
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mach_halt = sun3_halt;
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mach_get_hardware_list = sun3_get_hardware_list;
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memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
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// PROM seems to want the last couple of physical pages. --m
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memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
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m68k_num_memory=1;
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m68k_memory[0].size=*(romvec->pv_sun3mem);
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sun3_bootmem_alloc(memory_start, memory_end);
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}
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static void __init sun3_sched_init(irq_handler_t timer_routine)
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{
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sun3_disable_interrupts();
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intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
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intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
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intersil_clear();
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sun3_enable_irq(5);
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intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
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sun3_enable_interrupts();
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intersil_clear();
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}
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#if IS_ENABLED(CONFIG_SUN3_SCSI)
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static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
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{
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.flags = IORESOURCE_IRQ,
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.start = SUN3_VEC_VMESCSI0,
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.end = SUN3_VEC_VMESCSI0,
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}, {
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.flags = IORESOURCE_MEM,
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.start = 0xff200000,
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.end = 0xff200021,
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}, {
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.flags = IORESOURCE_IRQ,
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.start = SUN3_VEC_VMESCSI1,
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.end = SUN3_VEC_VMESCSI1,
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}, {
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.flags = IORESOURCE_MEM,
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.start = 0xff204000,
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.end = 0xff204021,
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},
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};
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/*
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* Int: level 2 autovector
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* IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
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*/
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static const struct resource sun3_scsi_rsrc[] __initconst = {
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{
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.flags = IORESOURCE_IRQ,
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.start = 2,
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.end = 2,
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}, {
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.flags = IORESOURCE_MEM,
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.start = 0x00140000,
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.end = 0x0014001f,
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},
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};
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int __init sun3_platform_init(void)
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{
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switch (idprom->id_machtype) {
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case SM_SUN3 | SM_3_160:
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case SM_SUN3 | SM_3_260:
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platform_device_register_simple("sun3_scsi_vme", -1,
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sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
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break;
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case SM_SUN3 | SM_3_50:
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case SM_SUN3 | SM_3_60:
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platform_device_register_simple("sun3_scsi", -1,
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sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
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break;
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}
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return 0;
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}
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arch_initcall(sun3_platform_init);
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#endif
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