forked from Minki/linux
107e0e0cd8
This will pave the way for each apic driver to be self-contained and eliminate the need for apic_probe[]. Order in which apic drivers are listed in the .apicdrivers section is important, as this determines the apic probe order. And this is enforced by the ordering of apic driver files in the Makefile and the macros apic_driver()/apic_drivers(). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: gorcunov@openvz.org Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110521005526.068775085@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
756 lines
18 KiB
C
756 lines
18 KiB
C
/*
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* Written by: Garry Forsgren, Unisys Corporation
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* Natalie Protasevich, Unisys Corporation
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*
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* This file contains the code to configure and interface
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* with Unisys ES7000 series hardware system manager.
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*
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* Copyright (c) 2003 Unisys Corporation.
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* Copyright (C) 2009, Red Hat, Inc., Ingo Molnar
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*
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Unisys Corporation, Township Line & Union Meeting
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* Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
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*
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* http://www.unisys.com
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/notifier.h>
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#include <linux/spinlock.h>
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#include <linux/cpumask.h>
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#include <linux/threads.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/reboot.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/acpi.h>
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#include <linux/init.h>
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#include <linux/gfp.h>
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#include <linux/nmi.h>
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#include <linux/smp.h>
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#include <linux/io.h>
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#include <asm/apicdef.h>
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#include <asm/atomic.h>
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#include <asm/fixmap.h>
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#include <asm/mpspec.h>
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#include <asm/setup.h>
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#include <asm/apic.h>
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#include <asm/ipi.h>
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/*
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* ES7000 chipsets
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*/
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#define NON_UNISYS 0
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#define ES7000_CLASSIC 1
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#define ES7000_ZORRO 2
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#define MIP_REG 1
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#define MIP_PSAI_REG 4
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#define MIP_BUSY 1
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#define MIP_SPIN 0xf0000
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#define MIP_VALID 0x0100000000000000ULL
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#define MIP_SW_APIC 0x1020b
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#define MIP_PORT(val) ((val >> 32) & 0xffff)
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#define MIP_RD_LO(val) (val & 0xffffffff)
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struct mip_reg {
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unsigned long long off_0x00;
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unsigned long long off_0x08;
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unsigned long long off_0x10;
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unsigned long long off_0x18;
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unsigned long long off_0x20;
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unsigned long long off_0x28;
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unsigned long long off_0x30;
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unsigned long long off_0x38;
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};
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struct mip_reg_info {
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unsigned long long mip_info;
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unsigned long long delivery_info;
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unsigned long long host_reg;
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unsigned long long mip_reg;
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};
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struct psai {
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unsigned long long entry_type;
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unsigned long long addr;
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unsigned long long bep_addr;
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};
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#ifdef CONFIG_ACPI
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struct es7000_oem_table {
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struct acpi_table_header Header;
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u32 OEMTableAddr;
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u32 OEMTableSize;
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};
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static unsigned long oem_addrX;
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static unsigned long oem_size;
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#endif
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/*
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* ES7000 Globals
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*/
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static volatile unsigned long *psai;
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static struct mip_reg *mip_reg;
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static struct mip_reg *host_reg;
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static int mip_port;
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static unsigned long mip_addr;
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static unsigned long host_addr;
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int es7000_plat;
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/*
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* GSI override for ES7000 platforms.
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*/
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static int __cpuinit wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip)
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{
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unsigned long vect = 0, psaival = 0;
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if (psai == NULL)
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return -1;
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vect = ((unsigned long)__pa(eip)/0x1000) << 16;
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psaival = (0x1000000 | vect | cpu);
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while (*psai & 0x1000000)
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;
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*psai = psaival;
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return 0;
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}
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static int es7000_apic_is_cluster(void)
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{
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/* MPENTIUMIII */
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if (boot_cpu_data.x86 == 6 &&
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(boot_cpu_data.x86_model >= 7 && boot_cpu_data.x86_model <= 11))
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return 1;
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return 0;
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}
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static void setup_unisys(void)
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{
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/*
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* Determine the generation of the ES7000 currently running.
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*
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* es7000_plat = 1 if the machine is a 5xx ES7000 box
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* es7000_plat = 2 if the machine is a x86_64 ES7000 box
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*
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*/
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if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
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es7000_plat = ES7000_ZORRO;
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else
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es7000_plat = ES7000_CLASSIC;
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}
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/*
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* Parse the OEM Table:
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*/
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static int parse_unisys_oem(char *oemptr)
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{
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int i;
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int success = 0;
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unsigned char type, size;
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unsigned long val;
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char *tp = NULL;
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struct psai *psaip = NULL;
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struct mip_reg_info *mi;
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struct mip_reg *host, *mip;
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tp = oemptr;
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tp += 8;
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for (i = 0; i <= 6; i++) {
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type = *tp++;
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size = *tp++;
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tp -= 2;
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switch (type) {
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case MIP_REG:
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mi = (struct mip_reg_info *)tp;
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val = MIP_RD_LO(mi->host_reg);
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host_addr = val;
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host = (struct mip_reg *)val;
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host_reg = __va(host);
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val = MIP_RD_LO(mi->mip_reg);
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mip_port = MIP_PORT(mi->mip_info);
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mip_addr = val;
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mip = (struct mip_reg *)val;
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mip_reg = __va(mip);
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pr_debug("host_reg = 0x%lx\n",
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(unsigned long)host_reg);
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pr_debug("mip_reg = 0x%lx\n",
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(unsigned long)mip_reg);
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success++;
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break;
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case MIP_PSAI_REG:
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psaip = (struct psai *)tp;
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if (tp != NULL) {
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if (psaip->addr)
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psai = __va(psaip->addr);
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else
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psai = NULL;
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success++;
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}
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break;
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default:
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break;
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}
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tp += size;
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}
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if (success < 2)
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es7000_plat = NON_UNISYS;
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else
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setup_unisys();
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return es7000_plat;
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}
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#ifdef CONFIG_ACPI
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static int __init find_unisys_acpi_oem_table(unsigned long *oem_addr)
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{
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struct acpi_table_header *header = NULL;
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struct es7000_oem_table *table;
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acpi_size tbl_size;
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acpi_status ret;
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int i = 0;
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for (;;) {
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ret = acpi_get_table_with_size("OEM1", i++, &header, &tbl_size);
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if (!ACPI_SUCCESS(ret))
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return -1;
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if (!memcmp((char *) &header->oem_id, "UNISYS", 6))
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break;
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early_acpi_os_unmap_memory(header, tbl_size);
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}
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table = (void *)header;
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oem_addrX = table->OEMTableAddr;
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oem_size = table->OEMTableSize;
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early_acpi_os_unmap_memory(header, tbl_size);
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*oem_addr = (unsigned long)__acpi_map_table(oem_addrX, oem_size);
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return 0;
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}
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static void __init unmap_unisys_acpi_oem_table(unsigned long oem_addr)
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{
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if (!oem_addr)
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return;
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__acpi_unmap_table((char *)oem_addr, oem_size);
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}
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static int es7000_check_dsdt(void)
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{
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struct acpi_table_header header;
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if (ACPI_SUCCESS(acpi_get_table_header(ACPI_SIG_DSDT, 0, &header)) &&
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!strncmp(header.oem_id, "UNISYS", 6))
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return 1;
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return 0;
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}
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static int es7000_acpi_ret;
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/* Hook from generic ACPI tables.c */
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static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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unsigned long oem_addr = 0;
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int check_dsdt;
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int ret = 0;
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/* check dsdt at first to avoid clear fix_map for oem_addr */
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check_dsdt = es7000_check_dsdt();
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if (!find_unisys_acpi_oem_table(&oem_addr)) {
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if (check_dsdt) {
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ret = parse_unisys_oem((char *)oem_addr);
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} else {
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setup_unisys();
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ret = 1;
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}
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/*
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* we need to unmap it
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*/
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unmap_unisys_acpi_oem_table(oem_addr);
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}
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es7000_acpi_ret = ret;
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return ret && !es7000_apic_is_cluster();
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}
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static int es7000_acpi_madt_oem_check_cluster(char *oem_id, char *oem_table_id)
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{
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int ret = es7000_acpi_ret;
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return ret && es7000_apic_is_cluster();
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}
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#else /* !CONFIG_ACPI: */
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static int es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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return 0;
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}
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static int es7000_acpi_madt_oem_check_cluster(char *oem_id, char *oem_table_id)
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{
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return 0;
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}
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#endif /* !CONFIG_ACPI */
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static void es7000_spin(int n)
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{
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int i = 0;
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while (i++ < n)
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rep_nop();
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}
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static int es7000_mip_write(struct mip_reg *mip_reg)
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{
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int status = 0;
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int spin;
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spin = MIP_SPIN;
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while ((host_reg->off_0x38 & MIP_VALID) != 0) {
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if (--spin <= 0) {
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WARN(1, "Timeout waiting for Host Valid Flag\n");
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return -1;
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}
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es7000_spin(MIP_SPIN);
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}
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memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
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outb(1, mip_port);
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spin = MIP_SPIN;
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while ((mip_reg->off_0x38 & MIP_VALID) == 0) {
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if (--spin <= 0) {
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WARN(1, "Timeout waiting for MIP Valid Flag\n");
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return -1;
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}
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es7000_spin(MIP_SPIN);
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}
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status = (mip_reg->off_0x00 & 0xffff0000000000ULL) >> 48;
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mip_reg->off_0x38 &= ~MIP_VALID;
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return status;
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}
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static void es7000_enable_apic_mode(void)
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{
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struct mip_reg es7000_mip_reg;
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int mip_status;
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if (!es7000_plat)
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return;
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pr_info("Enabling APIC mode.\n");
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memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
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es7000_mip_reg.off_0x00 = MIP_SW_APIC;
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es7000_mip_reg.off_0x38 = MIP_VALID;
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while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
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WARN(1, "Command failed, status = %x\n", mip_status);
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}
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static void es7000_vector_allocation_domain(int cpu, struct cpumask *retmask)
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{
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/* Careful. Some cpus do not strictly honor the set of cpus
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* specified in the interrupt destination when using lowest
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* priority interrupt delivery mode.
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*
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* In particular there was a hyperthreading cpu observed to
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* deliver interrupts to the wrong hyperthread when only one
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* hyperthread was specified in the interrupt desitination.
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*/
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cpumask_clear(retmask);
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cpumask_bits(retmask)[0] = APIC_ALL_CPUS;
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}
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static void es7000_wait_for_init_deassert(atomic_t *deassert)
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{
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while (!atomic_read(deassert))
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cpu_relax();
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}
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static unsigned int es7000_get_apic_id(unsigned long x)
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{
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return (x >> 24) & 0xFF;
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}
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static void es7000_send_IPI_mask(const struct cpumask *mask, int vector)
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{
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default_send_IPI_mask_sequence_phys(mask, vector);
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}
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static void es7000_send_IPI_allbutself(int vector)
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{
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default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector);
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}
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static void es7000_send_IPI_all(int vector)
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{
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es7000_send_IPI_mask(cpu_online_mask, vector);
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}
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static int es7000_apic_id_registered(void)
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{
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return 1;
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}
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static const struct cpumask *target_cpus_cluster(void)
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{
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return cpu_all_mask;
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}
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static const struct cpumask *es7000_target_cpus(void)
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{
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return cpumask_of(smp_processor_id());
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}
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static unsigned long es7000_check_apicid_used(physid_mask_t *map, int apicid)
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{
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return 0;
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}
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static unsigned long es7000_check_apicid_present(int bit)
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{
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return physid_isset(bit, phys_cpu_present_map);
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}
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static int es7000_early_logical_apicid(int cpu)
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{
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/* on es7000, logical apicid is the same as physical */
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return early_per_cpu(x86_bios_cpu_apicid, cpu);
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}
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static unsigned long calculate_ldr(int cpu)
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{
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unsigned long id = per_cpu(x86_bios_cpu_apicid, cpu);
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return SET_APIC_LOGICAL_ID(id);
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}
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/*
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* Set up the logical destination ID.
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*
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* Intel recommends to set DFR, LdR and TPR before enabling
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* an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
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* document number 292116). So here it goes...
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*/
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static void es7000_init_apic_ldr_cluster(void)
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{
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unsigned long val;
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int cpu = smp_processor_id();
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apic_write(APIC_DFR, APIC_DFR_CLUSTER);
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val = calculate_ldr(cpu);
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apic_write(APIC_LDR, val);
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}
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static void es7000_init_apic_ldr(void)
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{
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unsigned long val;
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int cpu = smp_processor_id();
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apic_write(APIC_DFR, APIC_DFR_FLAT);
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val = calculate_ldr(cpu);
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apic_write(APIC_LDR, val);
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}
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static void es7000_setup_apic_routing(void)
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{
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int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
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pr_info("Enabling APIC mode: %s. Using %d I/O APICs, target cpus %lx\n",
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(apic_version[apic] == 0x14) ?
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"Physical Cluster" : "Logical Cluster",
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nr_ioapics, cpumask_bits(es7000_target_cpus())[0]);
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}
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static int es7000_cpu_present_to_apicid(int mps_cpu)
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{
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if (!mps_cpu)
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return boot_cpu_physical_apicid;
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else if (mps_cpu < nr_cpu_ids)
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return per_cpu(x86_bios_cpu_apicid, mps_cpu);
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else
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return BAD_APICID;
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}
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static int cpu_id;
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static void es7000_apicid_to_cpu_present(int phys_apicid, physid_mask_t *retmap)
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{
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physid_set_mask_of_physid(cpu_id, retmap);
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++cpu_id;
|
|
}
|
|
|
|
static void es7000_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
|
|
{
|
|
/* For clustered we don't have a good way to do this yet - hack */
|
|
physids_promote(0xFFL, retmap);
|
|
}
|
|
|
|
static int es7000_check_phys_apicid_present(int cpu_physical_apicid)
|
|
{
|
|
boot_cpu_physical_apicid = read_apic_id();
|
|
return 1;
|
|
}
|
|
|
|
static unsigned int es7000_cpu_mask_to_apicid(const struct cpumask *cpumask)
|
|
{
|
|
unsigned int round = 0;
|
|
int cpu, uninitialized_var(apicid);
|
|
|
|
/*
|
|
* The cpus in the mask must all be on the apic cluster.
|
|
*/
|
|
for_each_cpu(cpu, cpumask) {
|
|
int new_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
|
|
|
|
if (round && APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) {
|
|
WARN(1, "Not a valid mask!");
|
|
|
|
return BAD_APICID;
|
|
}
|
|
apicid = new_apicid;
|
|
round++;
|
|
}
|
|
return apicid;
|
|
}
|
|
|
|
static unsigned int
|
|
es7000_cpu_mask_to_apicid_and(const struct cpumask *inmask,
|
|
const struct cpumask *andmask)
|
|
{
|
|
int apicid = early_per_cpu(x86_cpu_to_logical_apicid, 0);
|
|
cpumask_var_t cpumask;
|
|
|
|
if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC))
|
|
return apicid;
|
|
|
|
cpumask_and(cpumask, inmask, andmask);
|
|
cpumask_and(cpumask, cpumask, cpu_online_mask);
|
|
apicid = es7000_cpu_mask_to_apicid(cpumask);
|
|
|
|
free_cpumask_var(cpumask);
|
|
|
|
return apicid;
|
|
}
|
|
|
|
static int es7000_phys_pkg_id(int cpuid_apic, int index_msb)
|
|
{
|
|
return cpuid_apic >> index_msb;
|
|
}
|
|
|
|
static int probe_es7000(void)
|
|
{
|
|
/* probed later in mptable/ACPI hooks */
|
|
return 0;
|
|
}
|
|
|
|
static int es7000_mps_ret;
|
|
static int es7000_mps_oem_check(struct mpc_table *mpc, char *oem,
|
|
char *productid)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (mpc->oemptr) {
|
|
struct mpc_oemtable *oem_table =
|
|
(struct mpc_oemtable *)mpc->oemptr;
|
|
|
|
if (!strncmp(oem, "UNISYS", 6))
|
|
ret = parse_unisys_oem((char *)oem_table);
|
|
}
|
|
|
|
es7000_mps_ret = ret;
|
|
|
|
return ret && !es7000_apic_is_cluster();
|
|
}
|
|
|
|
static int es7000_mps_oem_check_cluster(struct mpc_table *mpc, char *oem,
|
|
char *productid)
|
|
{
|
|
int ret = es7000_mps_ret;
|
|
|
|
return ret && es7000_apic_is_cluster();
|
|
}
|
|
|
|
/* We've been warned by a false positive warning.Use __refdata to keep calm. */
|
|
struct apic __refdata apic_es7000_cluster = {
|
|
|
|
.name = "es7000",
|
|
.probe = probe_es7000,
|
|
.acpi_madt_oem_check = es7000_acpi_madt_oem_check_cluster,
|
|
.apic_id_registered = es7000_apic_id_registered,
|
|
|
|
.irq_delivery_mode = dest_LowestPrio,
|
|
/* logical delivery broadcast to all procs: */
|
|
.irq_dest_mode = 1,
|
|
|
|
.target_cpus = target_cpus_cluster,
|
|
.disable_esr = 1,
|
|
.dest_logical = 0,
|
|
.check_apicid_used = es7000_check_apicid_used,
|
|
.check_apicid_present = es7000_check_apicid_present,
|
|
|
|
.vector_allocation_domain = es7000_vector_allocation_domain,
|
|
.init_apic_ldr = es7000_init_apic_ldr_cluster,
|
|
|
|
.ioapic_phys_id_map = es7000_ioapic_phys_id_map,
|
|
.setup_apic_routing = es7000_setup_apic_routing,
|
|
.multi_timer_check = NULL,
|
|
.cpu_present_to_apicid = es7000_cpu_present_to_apicid,
|
|
.apicid_to_cpu_present = es7000_apicid_to_cpu_present,
|
|
.setup_portio_remap = NULL,
|
|
.check_phys_apicid_present = es7000_check_phys_apicid_present,
|
|
.enable_apic_mode = es7000_enable_apic_mode,
|
|
.phys_pkg_id = es7000_phys_pkg_id,
|
|
.mps_oem_check = es7000_mps_oem_check_cluster,
|
|
|
|
.get_apic_id = es7000_get_apic_id,
|
|
.set_apic_id = NULL,
|
|
.apic_id_mask = 0xFF << 24,
|
|
|
|
.cpu_mask_to_apicid = es7000_cpu_mask_to_apicid,
|
|
.cpu_mask_to_apicid_and = es7000_cpu_mask_to_apicid_and,
|
|
|
|
.send_IPI_mask = es7000_send_IPI_mask,
|
|
.send_IPI_mask_allbutself = NULL,
|
|
.send_IPI_allbutself = es7000_send_IPI_allbutself,
|
|
.send_IPI_all = es7000_send_IPI_all,
|
|
.send_IPI_self = default_send_IPI_self,
|
|
|
|
.wakeup_secondary_cpu = wakeup_secondary_cpu_via_mip,
|
|
|
|
.trampoline_phys_low = 0x467,
|
|
.trampoline_phys_high = 0x469,
|
|
|
|
.wait_for_init_deassert = NULL,
|
|
|
|
/* Nothing to do for most platforms, since cleared by the INIT cycle: */
|
|
.smp_callin_clear_local_apic = NULL,
|
|
.inquire_remote_apic = default_inquire_remote_apic,
|
|
|
|
.read = native_apic_mem_read,
|
|
.write = native_apic_mem_write,
|
|
.icr_read = native_apic_icr_read,
|
|
.icr_write = native_apic_icr_write,
|
|
.wait_icr_idle = native_apic_wait_icr_idle,
|
|
.safe_wait_icr_idle = native_safe_apic_wait_icr_idle,
|
|
|
|
.x86_32_early_logical_apicid = es7000_early_logical_apicid,
|
|
};
|
|
|
|
struct apic __refdata apic_es7000 = {
|
|
|
|
.name = "es7000",
|
|
.probe = probe_es7000,
|
|
.acpi_madt_oem_check = es7000_acpi_madt_oem_check,
|
|
.apic_id_registered = es7000_apic_id_registered,
|
|
|
|
.irq_delivery_mode = dest_Fixed,
|
|
/* phys delivery to target CPUs: */
|
|
.irq_dest_mode = 0,
|
|
|
|
.target_cpus = es7000_target_cpus,
|
|
.disable_esr = 1,
|
|
.dest_logical = 0,
|
|
.check_apicid_used = es7000_check_apicid_used,
|
|
.check_apicid_present = es7000_check_apicid_present,
|
|
|
|
.vector_allocation_domain = es7000_vector_allocation_domain,
|
|
.init_apic_ldr = es7000_init_apic_ldr,
|
|
|
|
.ioapic_phys_id_map = es7000_ioapic_phys_id_map,
|
|
.setup_apic_routing = es7000_setup_apic_routing,
|
|
.multi_timer_check = NULL,
|
|
.cpu_present_to_apicid = es7000_cpu_present_to_apicid,
|
|
.apicid_to_cpu_present = es7000_apicid_to_cpu_present,
|
|
.setup_portio_remap = NULL,
|
|
.check_phys_apicid_present = es7000_check_phys_apicid_present,
|
|
.enable_apic_mode = es7000_enable_apic_mode,
|
|
.phys_pkg_id = es7000_phys_pkg_id,
|
|
.mps_oem_check = es7000_mps_oem_check,
|
|
|
|
.get_apic_id = es7000_get_apic_id,
|
|
.set_apic_id = NULL,
|
|
.apic_id_mask = 0xFF << 24,
|
|
|
|
.cpu_mask_to_apicid = es7000_cpu_mask_to_apicid,
|
|
.cpu_mask_to_apicid_and = es7000_cpu_mask_to_apicid_and,
|
|
|
|
.send_IPI_mask = es7000_send_IPI_mask,
|
|
.send_IPI_mask_allbutself = NULL,
|
|
.send_IPI_allbutself = es7000_send_IPI_allbutself,
|
|
.send_IPI_all = es7000_send_IPI_all,
|
|
.send_IPI_self = default_send_IPI_self,
|
|
|
|
.trampoline_phys_low = 0x467,
|
|
.trampoline_phys_high = 0x469,
|
|
|
|
.wait_for_init_deassert = es7000_wait_for_init_deassert,
|
|
|
|
/* Nothing to do for most platforms, since cleared by the INIT cycle: */
|
|
.smp_callin_clear_local_apic = NULL,
|
|
.inquire_remote_apic = default_inquire_remote_apic,
|
|
|
|
.read = native_apic_mem_read,
|
|
.write = native_apic_mem_write,
|
|
.icr_read = native_apic_icr_read,
|
|
.icr_write = native_apic_icr_write,
|
|
.wait_icr_idle = native_apic_wait_icr_idle,
|
|
.safe_wait_icr_idle = native_safe_apic_wait_icr_idle,
|
|
|
|
.x86_32_early_logical_apicid = es7000_early_logical_apicid,
|
|
};
|
|
|
|
/*
|
|
* Need to check for es7000 followed by es7000_cluster, so this order
|
|
* in apic_drivers is important.
|
|
*/
|
|
apic_drivers(apic_es7000, apic_es7000_cluster);
|