SGI 320/540 (Visual Workstation)
Summit/EXA (IBM x440)
Unisys ES7000 IA32 series
- Voyager (NCR)
If you have one of these systems, or if you want to build a
generic distribution kernel, say Y here - otherwise say N.
Support for Unisys ES7000 systems. Say 'Y' here if this kernel is
supposed to run on an IA32-based Unisys ES7000 system.
-config X86_VOYAGER
- bool "Voyager (NCR)"
- depends on SMP && !PCI && BROKEN
- depends on X86_32_NON_STANDARD
- ---help---
- Voyager is an MCA-based 32-way capable SMP architecture proprietary
- to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based.
-
- *** WARNING ***
-
- If you do not specifically know you have a Voyager based machine,
- say N here, otherwise the kernel you build will not be bootable.
-
config SCHED_OMIT_FRAME_POINTER
def_bool y
prompt "Single-depth WCHAN output"
setup-y += header.o main.o mca.o memory.o pm.o pmjump.o
setup-y += printf.o string.o tty.o video.o video-mode.o version.o
setup-$(CONFIG_X86_APM_BOOT) += apm.o
-setup-$(CONFIG_X86_VOYAGER) += voyager.o
# The link order of the video-*.o modules can matter. In particular,
# video-vga.o *must* be listed first, followed by video-vesa.o.
int enable_a20(void)
{
-#ifdef CONFIG_X86_VOYAGER
- /* On Voyager, a20_test() is unsafe? */
- enable_a20_kbc();
- return 0;
-#else
int loops = A20_ENABLE_LOOPS;
int kbc_err;
}
return -1;
-#endif
}
/* video-vesa.c */
void vesa_store_edid(void);
-/* voyager.c */
-int query_voyager(void);
-
#endif /* __ASSEMBLY__ */
#endif /* BOOT_BOOT_H */
/* Query MCA information */
query_mca();
- /* Voyager */
-#ifdef CONFIG_X86_VOYAGER
- query_voyager();
-#endif
-
/* Query Intel SpeedStep (IST) information */
query_ist();
+++ /dev/null
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright 2007 rPath, Inc. - All Rights Reserved
- *
- * This file is part of the Linux kernel, and is made available under
- * the terms of the GNU General Public License version 2.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * Get the Voyager config information
- */
-
-#include "boot.h"
-
-int query_voyager(void)
-{
- u8 err;
- u16 es, di;
- /* Abuse the apm_bios_info area for this */
- u8 *data_ptr = (u8 *)&boot_params.apm_bios_info;
-
- data_ptr[0] = 0xff; /* Flag on config not found(?) */
-
- asm("pushw %%es ; "
- "int $0x15 ; "
- "setc %0 ; "
- "movw %%es, %1 ; "
- "popw %%es"
- : "=q" (err), "=r" (es), "=D" (di)
- : "a" (0xffc0));
-
- if (err)
- return -1; /* Not Voyager */
-
- set_fs(es);
- copy_from_fs(data_ptr, di, 7); /* Table is 7 bytes apparently */
- return 0;
-}
CONFIG_X86_FIND_SMP_CONFIG=y
CONFIG_X86_MPPARSE=y
# CONFIG_X86_ELAN is not set
-# CONFIG_X86_VOYAGER is not set
# CONFIG_X86_GENERICARCH is not set
# CONFIG_X86_VSMP is not set
# CONFIG_X86_RDC321X is not set
CONFIG_X86_FIND_SMP_CONFIG=y
CONFIG_X86_MPPARSE=y
# CONFIG_X86_ELAN is not set
-# CONFIG_X86_VOYAGER is not set
# CONFIG_X86_GENERICARCH is not set
# CONFIG_X86_VSMP is not set
CONFIG_SCHED_OMIT_FRAME_POINTER=y
+++ /dev/null
-/* defines for inline arch setup functions */
-#include <linux/clockchips.h>
-
-#include <asm/voyager.h>
-#include <asm/i8253.h>
-
-/**
- * do_timer_interrupt_hook - hook into timer tick
- *
- * Call the pit clock event handler. see asm/i8253.h
- **/
-static inline void do_timer_interrupt_hook(void)
-{
- global_clock_event->event_handler(global_clock_event);
- voyager_timer_interrupt();
-}
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8 -*- */
-
-/* Copyright (C) 2002
- *
- * Author: James.Bottomley@HansenPartnership.com
- *
- * linux/arch/i386/voyager/entry_arch.h
- *
- * This file builds the VIC and QIC CPI gates
- */
-
-/* initialise the voyager interrupt gates
- *
- * This uses the macros in irq.h to set up assembly jump gates. The
- * calls are then redirected to the same routine with smp_ prefixed */
-BUILD_INTERRUPT(vic_sys_interrupt, VIC_SYS_INT)
-BUILD_INTERRUPT(vic_cmn_interrupt, VIC_CMN_INT)
-BUILD_INTERRUPT(vic_cpi_interrupt, VIC_CPI_LEVEL0);
-
-/* do all the QIC interrupts */
-BUILD_INTERRUPT(qic_timer_interrupt, QIC_TIMER_CPI);
-BUILD_INTERRUPT(qic_invalidate_interrupt, QIC_INVALIDATE_CPI);
-BUILD_INTERRUPT(qic_reschedule_interrupt, QIC_RESCHEDULE_CPI);
-BUILD_INTERRUPT(qic_enable_irq_interrupt, QIC_ENABLE_IRQ_CPI);
-BUILD_INTERRUPT(qic_call_function_interrupt, QIC_CALL_FUNCTION_CPI);
-BUILD_INTERRUPT(qic_call_function_single_interrupt, QIC_CALL_FUNCTION_SINGLE_CPI);
+++ /dev/null
-#include <asm/voyager.h>
-#include <asm/setup.h>
-#define VOYAGER_BIOS_INFO ((struct voyager_bios_info *) \
- (&boot_params.apm_bios_info))
-
-/* Hook to call BIOS initialisation function */
-
-/* for voyager, pass the voyager BIOS/SUS info area to the detection
- * routines */
-
-#define ARCH_SETUP voyager_detect(VOYAGER_BIOS_INFO);
-
+++ /dev/null
-/* Copyright (C) 1999,2001
- *
- * Author: J.E.J.Bottomley@HansenPartnership.com
- *
- * Standard include definitions for the NCR Voyager Interrupt Controller */
-
-/* The eight CPI vectors. To activate a CPI, you write a bit mask
- * corresponding to the processor set to be interrupted into the
- * relevant register. That set of CPUs will then be interrupted with
- * the CPI */
-static const int VIC_CPI_Registers[] =
- {0xFC00, 0xFC01, 0xFC08, 0xFC09,
- 0xFC10, 0xFC11, 0xFC18, 0xFC19 };
-
-#define VIC_PROC_WHO_AM_I 0xfc29
-# define QUAD_IDENTIFIER 0xC0
-# define EIGHT_SLOT_IDENTIFIER 0xE0
-#define QIC_EXTENDED_PROCESSOR_SELECT 0xFC72
-#define VIC_CPI_BASE_REGISTER 0xFC41
-#define VIC_PROCESSOR_ID 0xFC21
-# define VIC_CPU_MASQUERADE_ENABLE 0x8
-
-#define VIC_CLAIM_REGISTER_0 0xFC38
-#define VIC_CLAIM_REGISTER_1 0xFC39
-#define VIC_REDIRECT_REGISTER_0 0xFC60
-#define VIC_REDIRECT_REGISTER_1 0xFC61
-#define VIC_PRIORITY_REGISTER 0xFC20
-
-#define VIC_PRIMARY_MC_BASE 0xFC48
-#define VIC_SECONDARY_MC_BASE 0xFC49
-
-#define QIC_PROCESSOR_ID 0xFC71
-# define QIC_CPUID_ENABLE 0x08
-
-#define QIC_VIC_CPI_BASE_REGISTER 0xFC79
-#define QIC_CPI_BASE_REGISTER 0xFC7A
-
-#define QIC_MASK_REGISTER0 0xFC80
-/* NOTE: these are masked high, enabled low */
-# define QIC_PERF_TIMER 0x01
-# define QIC_LPE 0x02
-# define QIC_SYS_INT 0x04
-# define QIC_CMN_INT 0x08
-/* at the moment, just enable CMN_INT, disable SYS_INT */
-# define QIC_DEFAULT_MASK0 (~(QIC_CMN_INT /* | VIC_SYS_INT */))
-#define QIC_MASK_REGISTER1 0xFC81
-# define QIC_BOOT_CPI_MASK 0xFE
-/* Enable CPI's 1-6 inclusive */
-# define QIC_CPI_ENABLE 0x81
-
-#define QIC_INTERRUPT_CLEAR0 0xFC8A
-#define QIC_INTERRUPT_CLEAR1 0xFC8B
-
-/* this is where we place the CPI vectors */
-#define VIC_DEFAULT_CPI_BASE 0xC0
-/* this is where we place the QIC CPI vectors */
-#define QIC_DEFAULT_CPI_BASE 0xD0
-
-#define VIC_BOOT_INTERRUPT_MASK 0xfe
-
-extern void smp_vic_timer_interrupt(void);
+++ /dev/null
-/* Copyright (C) 1999,2001
- *
- * Author: J.E.J.Bottomley@HansenPartnership.com
- *
- * Standard include definitions for the NCR Voyager system */
-
-#undef VOYAGER_DEBUG
-#undef VOYAGER_CAT_DEBUG
-
-#ifdef VOYAGER_DEBUG
-#define VDEBUG(x) printk x
-#else
-#define VDEBUG(x)
-#endif
-
-/* There are three levels of voyager machine: 3,4 and 5. The rule is
- * if it's less than 3435 it's a Level 3 except for a 3360 which is
- * a level 4. A 3435 or above is a Level 5 */
-#define VOYAGER_LEVEL5_AND_ABOVE 0x3435
-#define VOYAGER_LEVEL4 0x3360
-
-/* The L4 DINO ASIC */
-#define VOYAGER_DINO 0x43
-
-/* voyager ports in standard I/O space */
-#define VOYAGER_MC_SETUP 0x96
-
-
-#define VOYAGER_CAT_CONFIG_PORT 0x97
-# define VOYAGER_CAT_DESELECT 0xff
-#define VOYAGER_SSPB_RELOCATION_PORT 0x98
-
-/* Valid CAT controller commands */
-/* start instruction register cycle */
-#define VOYAGER_CAT_IRCYC 0x01
-/* start data register cycle */
-#define VOYAGER_CAT_DRCYC 0x02
-/* move to execute state */
-#define VOYAGER_CAT_RUN 0x0F
-/* end operation */
-#define VOYAGER_CAT_END 0x80
-/* hold in idle state */
-#define VOYAGER_CAT_HOLD 0x90
-/* single step an "intest" vector */
-#define VOYAGER_CAT_STEP 0xE0
-/* return cat controller to CLEMSON mode */
-#define VOYAGER_CAT_CLEMSON 0xFF
-
-/* the default cat command header */
-#define VOYAGER_CAT_HEADER 0x7F
-
-/* the range of possible CAT module ids in the system */
-#define VOYAGER_MIN_MODULE 0x10
-#define VOYAGER_MAX_MODULE 0x1f
-
-/* The voyager registers per asic */
-#define VOYAGER_ASIC_ID_REG 0x00
-#define VOYAGER_ASIC_TYPE_REG 0x01
-/* the sub address registers can be made auto incrementing on reads */
-#define VOYAGER_AUTO_INC_REG 0x02
-# define VOYAGER_AUTO_INC 0x04
-# define VOYAGER_NO_AUTO_INC 0xfb
-#define VOYAGER_SUBADDRDATA 0x03
-#define VOYAGER_SCANPATH 0x05
-# define VOYAGER_CONNECT_ASIC 0x01
-# define VOYAGER_DISCONNECT_ASIC 0xfe
-#define VOYAGER_SUBADDRLO 0x06
-#define VOYAGER_SUBADDRHI 0x07
-#define VOYAGER_SUBMODSELECT 0x08
-#define VOYAGER_SUBMODPRESENT 0x09
-
-#define VOYAGER_SUBADDR_LO 0xff
-#define VOYAGER_SUBADDR_HI 0xffff
-
-/* the maximum size of a scan path -- used to form instructions */
-#define VOYAGER_MAX_SCAN_PATH 0x100
-/* the biggest possible register size (in bytes) */
-#define VOYAGER_MAX_REG_SIZE 4
-
-/* Total number of possible modules (including submodules) */
-#define VOYAGER_MAX_MODULES 16
-/* Largest number of asics per module */
-#define VOYAGER_MAX_ASICS_PER_MODULE 7
-
-/* the CAT asic of each module is always the first one */
-#define VOYAGER_CAT_ID 0
-#define VOYAGER_PSI 0x1a
-
-/* voyager instruction operations and registers */
-#define VOYAGER_READ_CONFIG 0x1
-#define VOYAGER_WRITE_CONFIG 0x2
-#define VOYAGER_BYPASS 0xff
-
-typedef struct voyager_asic {
- __u8 asic_addr; /* ASIC address; Level 4 */
- __u8 asic_type; /* ASIC type */
- __u8 asic_id; /* ASIC id */
- __u8 jtag_id[4]; /* JTAG id */
- __u8 asic_location; /* Location within scan path; start w/ 0 */
- __u8 bit_location; /* Location within bit stream; start w/ 0 */
- __u8 ireg_length; /* Instruction register length */
- __u16 subaddr; /* Amount of sub address space */
- struct voyager_asic *next; /* Next asic in linked list */
-} voyager_asic_t;
-
-typedef struct voyager_module {
- __u8 module_addr; /* Module address */
- __u8 scan_path_connected; /* Scan path connected */
- __u16 ee_size; /* Size of the EEPROM */
- __u16 num_asics; /* Number of Asics */
- __u16 inst_bits; /* Instruction bits in the scan path */
- __u16 largest_reg; /* Largest register in the scan path */
- __u16 smallest_reg; /* Smallest register in the scan path */
- voyager_asic_t *asic; /* First ASIC in scan path (CAT_I) */
- struct voyager_module *submodule; /* Submodule pointer */
- struct voyager_module *next; /* Next module in linked list */
-} voyager_module_t;
-
-typedef struct voyager_eeprom_hdr {
- __u8 module_id[4];
- __u8 version_id;
- __u8 config_id;
- __u16 boundry_id; /* boundary scan id */
- __u16 ee_size; /* size of EEPROM */
- __u8 assembly[11]; /* assembly # */
- __u8 assembly_rev; /* assembly rev */
- __u8 tracer[4]; /* tracer number */
- __u16 assembly_cksum; /* asm checksum */
- __u16 power_consump; /* pwr requirements */
- __u16 num_asics; /* number of asics */
- __u16 bist_time; /* min. bist time */
- __u16 err_log_offset; /* error log offset */
- __u16 scan_path_offset;/* scan path offset */
- __u16 cct_offset;
- __u16 log_length; /* length of err log */
- __u16 xsum_end; /* offset to end of
- checksum */
- __u8 reserved[4];
- __u8 sflag; /* starting sentinal */
- __u8 part_number[13]; /* prom part number */
- __u8 version[10]; /* version number */
- __u8 signature[8];
- __u16 eeprom_chksum;
- __u32 data_stamp_offset;
- __u8 eflag ; /* ending sentinal */
-} __attribute__((packed)) voyager_eprom_hdr_t;
-
-
-
-#define VOYAGER_EPROM_SIZE_OFFSET \
- ((__u16)(&(((voyager_eprom_hdr_t *)0)->ee_size)))
-#define VOYAGER_XSUM_END_OFFSET 0x2a
-
-/* the following three definitions are for internal table layouts
- * in the module EPROMs. We really only care about the IDs and
- * offsets */
-typedef struct voyager_sp_table {
- __u8 asic_id;
- __u8 bypass_flag;
- __u16 asic_data_offset;
- __u16 config_data_offset;
-} __attribute__((packed)) voyager_sp_table_t;
-
-typedef struct voyager_jtag_table {
- __u8 icode[4];
- __u8 runbist[4];
- __u8 intest[4];
- __u8 samp_preld[4];
- __u8 ireg_len;
-} __attribute__((packed)) voyager_jtt_t;
-
-typedef struct voyager_asic_data_table {
- __u8 jtag_id[4];
- __u16 length_bsr;
- __u16 length_bist_reg;
- __u32 bist_clk;
- __u16 subaddr_bits;
- __u16 seed_bits;
- __u16 sig_bits;
- __u16 jtag_offset;
-} __attribute__((packed)) voyager_at_t;
-
-/* Voyager Interrupt Controller (VIC) registers */
-
-/* Base to add to Cross Processor Interrupts (CPIs) when triggering
- * the CPU IRQ line */
-/* register defines for the WCBICs (one per processor) */
-#define VOYAGER_WCBIC0 0x41 /* bus A node P1 processor 0 */
-#define VOYAGER_WCBIC1 0x49 /* bus A node P1 processor 1 */
-#define VOYAGER_WCBIC2 0x51 /* bus A node P2 processor 0 */
-#define VOYAGER_WCBIC3 0x59 /* bus A node P2 processor 1 */
-#define VOYAGER_WCBIC4 0x61 /* bus B node P1 processor 0 */
-#define VOYAGER_WCBIC5 0x69 /* bus B node P1 processor 1 */
-#define VOYAGER_WCBIC6 0x71 /* bus B node P2 processor 0 */
-#define VOYAGER_WCBIC7 0x79 /* bus B node P2 processor 1 */
-
-
-/* top of memory registers */
-#define VOYAGER_WCBIC_TOM_L 0x4
-#define VOYAGER_WCBIC_TOM_H 0x5
-
-/* register defines for Voyager Memory Contol (VMC)
- * these are present on L4 machines only */
-#define VOYAGER_VMC1 0x81
-#define VOYAGER_VMC2 0x91
-#define VOYAGER_VMC3 0xa1
-#define VOYAGER_VMC4 0xb1
-
-/* VMC Ports */
-#define VOYAGER_VMC_MEMORY_SETUP 0x9
-# define VMC_Interleaving 0x01
-# define VMC_4Way 0x02
-# define VMC_EvenCacheLines 0x04
-# define VMC_HighLine 0x08
-# define VMC_Start0_Enable 0x20
-# define VMC_Start1_Enable 0x40
-# define VMC_Vremap 0x80
-#define VOYAGER_VMC_BANK_DENSITY 0xa
-# define VMC_BANK_EMPTY 0
-# define VMC_BANK_4MB 1
-# define VMC_BANK_16MB 2
-# define VMC_BANK_64MB 3
-# define VMC_BANK0_MASK 0x03
-# define VMC_BANK1_MASK 0x0C
-# define VMC_BANK2_MASK 0x30
-# define VMC_BANK3_MASK 0xC0
-
-/* Magellan Memory Controller (MMC) defines - present on L5 */
-#define VOYAGER_MMC_ASIC_ID 1
-/* the two memory modules corresponding to memory cards in the system */
-#define VOYAGER_MMC_MEMORY0_MODULE 0x14
-#define VOYAGER_MMC_MEMORY1_MODULE 0x15
-/* the Magellan Memory Address (MMA) defines */
-#define VOYAGER_MMA_ASIC_ID 2
-
-/* Submodule number for the Quad Baseboard */
-#define VOYAGER_QUAD_BASEBOARD 1
-
-/* ASIC defines for the Quad Baseboard */
-#define VOYAGER_QUAD_QDATA0 1
-#define VOYAGER_QUAD_QDATA1 2
-#define VOYAGER_QUAD_QABC 3
-
-/* Useful areas in extended CMOS */
-#define VOYAGER_PROCESSOR_PRESENT_MASK 0x88a
-#define VOYAGER_MEMORY_CLICKMAP 0xa23
-#define VOYAGER_DUMP_LOCATION 0xb1a
-
-/* SUS In Control bit - used to tell SUS that we don't need to be
- * babysat anymore */
-#define VOYAGER_SUS_IN_CONTROL_PORT 0x3ff
-# define VOYAGER_IN_CONTROL_FLAG 0x80
-
-/* Voyager PSI defines */
-#define VOYAGER_PSI_STATUS_REG 0x08
-# define PSI_DC_FAIL 0x01
-# define PSI_MON 0x02
-# define PSI_FAULT 0x04
-# define PSI_ALARM 0x08
-# define PSI_CURRENT 0x10
-# define PSI_DVM 0x20
-# define PSI_PSCFAULT 0x40
-# define PSI_STAT_CHG 0x80
-
-#define VOYAGER_PSI_SUPPLY_REG 0x8000
- /* read */
-# define PSI_FAIL_DC 0x01
-# define PSI_FAIL_AC 0x02
-# define PSI_MON_INT 0x04
-# define PSI_SWITCH_OFF 0x08
-# define PSI_HX_OFF 0x10
-# define PSI_SECURITY 0x20
-# define PSI_CMOS_BATT_LOW 0x40
-# define PSI_CMOS_BATT_FAIL 0x80
- /* write */
-# define PSI_CLR_SWITCH_OFF 0x13
-# define PSI_CLR_HX_OFF 0x14
-# define PSI_CLR_CMOS_BATT_FAIL 0x17
-
-#define VOYAGER_PSI_MASK 0x8001
-# define PSI_MASK_MASK 0x10
-
-#define VOYAGER_PSI_AC_FAIL_REG 0x8004
-#define AC_FAIL_STAT_CHANGE 0x80
-
-#define VOYAGER_PSI_GENERAL_REG 0x8007
- /* read */
-# define PSI_SWITCH_ON 0x01
-# define PSI_SWITCH_ENABLED 0x02
-# define PSI_ALARM_ENABLED 0x08
-# define PSI_SECURE_ENABLED 0x10
-# define PSI_COLD_RESET 0x20
-# define PSI_COLD_START 0x80
- /* write */
-# define PSI_POWER_DOWN 0x10
-# define PSI_SWITCH_DISABLE 0x01
-# define PSI_SWITCH_ENABLE 0x11
-# define PSI_CLEAR 0x12
-# define PSI_ALARM_DISABLE 0x03
-# define PSI_ALARM_ENABLE 0x13
-# define PSI_CLEAR_COLD_RESET 0x05
-# define PSI_SET_COLD_RESET 0x15
-# define PSI_CLEAR_COLD_START 0x07
-# define PSI_SET_COLD_START 0x17
-
-
-
-struct voyager_bios_info {
- __u8 len;
- __u8 major;
- __u8 minor;
- __u8 debug;
- __u8 num_classes;
- __u8 class_1;
- __u8 class_2;
-};
-
-/* The following structures and definitions are for the Kernel/SUS
- * interface these are needed to find out how SUS initialised any Quad
- * boards in the system */
-
-#define NUMBER_OF_MC_BUSSES 2
-#define SLOTS_PER_MC_BUS 8
-#define MAX_CPUS 16 /* 16 way CPU system */
-#define MAX_PROCESSOR_BOARDS 4 /* 4 processor slot system */
-#define MAX_CACHE_LEVELS 4 /* # of cache levels supported */
-#define MAX_SHARED_CPUS 4 /* # of CPUs that can share a LARC */
-#define NUMBER_OF_POS_REGS 8
-
-typedef struct {
- __u8 MC_Slot;
- __u8 POS_Values[NUMBER_OF_POS_REGS];
-} __attribute__((packed)) MC_SlotInformation_t;
-
-struct QuadDescription {
- __u8 Type; /* for type 0 (DYADIC or MONADIC) all fields
- * will be zero except for slot */
- __u8 StructureVersion;
- __u32 CPI_BaseAddress;
- __u32 LARC_BankSize;
- __u32 LocalMemoryStateBits;
- __u8 Slot; /* Processor slots 1 - 4 */
-} __attribute__((packed));
-
-struct ProcBoardInfo {
- __u8 Type;
- __u8 StructureVersion;
- __u8 NumberOfBoards;
- struct QuadDescription QuadData[MAX_PROCESSOR_BOARDS];
-} __attribute__((packed));
-
-struct CacheDescription {
- __u8 Level;
- __u32 TotalSize;
- __u16 LineSize;
- __u8 Associativity;
- __u8 CacheType;
- __u8 WriteType;
- __u8 Number_CPUs_SharedBy;
- __u8 Shared_CPUs_Hardware_IDs[MAX_SHARED_CPUS];
-
-} __attribute__((packed));
-
-struct CPU_Description {
- __u8 CPU_HardwareId;
- char *FRU_String;
- __u8 NumberOfCacheLevels;
- struct CacheDescription CacheLevelData[MAX_CACHE_LEVELS];
-} __attribute__((packed));
-
-struct CPU_Info {
- __u8 Type;
- __u8 StructureVersion;
- __u8 NumberOf_CPUs;
- struct CPU_Description CPU_Data[MAX_CPUS];
-} __attribute__((packed));
-
-
-/*
- * This structure will be used by SUS and the OS.
- * The assumption about this structure is that no blank space is
- * packed in it by our friend the compiler.
- */
-typedef struct {
- __u8 Mailbox_SUS; /* Written to by SUS to give
- commands/response to the OS */
- __u8 Mailbox_OS; /* Written to by the OS to give
- commands/response to SUS */
- __u8 SUS_MailboxVersion; /* Tells the OS which iteration of the
- interface SUS supports */
- __u8 OS_MailboxVersion; /* Tells SUS which iteration of the
- interface the OS supports */
- __u32 OS_Flags; /* Flags set by the OS as info for
- SUS */
- __u32 SUS_Flags; /* Flags set by SUS as info
- for the OS */
- __u32 WatchDogPeriod; /* Watchdog period (in seconds) which
- the DP uses to see if the OS
- is dead */
- __u32 WatchDogCount; /* Updated by the OS on every tic. */
- __u32 MemoryFor_SUS_ErrorLog; /* Flat 32 bit address which tells SUS
- where to stuff the SUS error log
- on a dump */
- MC_SlotInformation_t MC_SlotInfo[NUMBER_OF_MC_BUSSES*SLOTS_PER_MC_BUS];
- /* Storage for MCA POS data */
- /* All new SECOND_PASS_INTERFACE fields added from this point */
- struct ProcBoardInfo *BoardData;
- struct CPU_Info *CPU_Data;
- /* All new fields must be added from this point */
-} Voyager_KernelSUS_Mbox_t;
-
-/* structure for finding the right memory address to send a QIC CPI to */
-struct voyager_qic_cpi {
- /* Each cache line (32 bytes) can trigger a cpi. The cpi
- * read/write may occur anywhere in the cache line---pick the
- * middle to be safe */
- struct {
- __u32 pad1[3];
- __u32 cpi;
- __u32 pad2[4];
- } qic_cpi[8];
-};
-
-struct voyager_status {
- __u32 power_fail:1;
- __u32 switch_off:1;
- __u32 request_from_kernel:1;
-};
-
-struct voyager_psi_regs {
- __u8 cat_id;
- __u8 cat_dev;
- __u8 cat_control;
- __u8 subaddr;
- __u8 dummy4;
- __u8 checkbit;
- __u8 subaddr_low;
- __u8 subaddr_high;
- __u8 intstatus;
- __u8 stat1;
- __u8 stat3;
- __u8 fault;
- __u8 tms;
- __u8 gen;
- __u8 sysconf;
- __u8 dummy15;
-};
-
-struct voyager_psi_subregs {
- __u8 supply;
- __u8 mask;
- __u8 present;
- __u8 DCfail;
- __u8 ACfail;
- __u8 fail;
- __u8 UPSfail;
- __u8 genstatus;
-};
-
-struct voyager_psi {
- struct voyager_psi_regs regs;
- struct voyager_psi_subregs subregs;
-};
-
-struct voyager_SUS {
-#define VOYAGER_DUMP_BUTTON_NMI 0x1
-#define VOYAGER_SUS_VALID 0x2
-#define VOYAGER_SYSINT_COMPLETE 0x3
- __u8 SUS_mbox;
-#define VOYAGER_NO_COMMAND 0x0
-#define VOYAGER_IGNORE_DUMP 0x1
-#define VOYAGER_DO_DUMP 0x2
-#define VOYAGER_SYSINT_HANDSHAKE 0x3
-#define VOYAGER_DO_MEM_DUMP 0x4
-#define VOYAGER_SYSINT_WAS_RECOVERED 0x5
- __u8 kernel_mbox;
-#define VOYAGER_MAILBOX_VERSION 0x10
- __u8 SUS_version;
- __u8 kernel_version;
-#define VOYAGER_OS_HAS_SYSINT 0x1
-#define VOYAGER_OS_IN_PROGRESS 0x2
-#define VOYAGER_UPDATING_WDPERIOD 0x4
- __u32 kernel_flags;
-#define VOYAGER_SUS_BOOTING 0x1
-#define VOYAGER_SUS_IN_PROGRESS 0x2
- __u32 SUS_flags;
- __u32 watchdog_period;
- __u32 watchdog_count;
- __u32 SUS_errorlog;
- /* lots of system configuration stuff under here */
-};
-
-/* Variables exported by voyager_smp */
-extern __u32 voyager_extended_vic_processors;
-extern __u32 voyager_allowed_boot_processors;
-extern __u32 voyager_quad_processors;
-extern struct voyager_qic_cpi *voyager_quad_cpi_addr[NR_CPUS];
-extern struct voyager_SUS *voyager_SUS;
-
-/* variables exported always */
-extern struct task_struct *voyager_thread;
-extern int voyager_level;
-extern struct voyager_status voyager_status;
-
-/* functions exported by the voyager and voyager_smp modules */
-extern int voyager_cat_readb(__u8 module, __u8 asic, int reg);
-extern void voyager_cat_init(void);
-extern void voyager_detect(struct voyager_bios_info *);
-extern void voyager_trap_init(void);
-extern void voyager_setup_irqs(void);
-extern int voyager_memory_detect(int region, __u32 *addr, __u32 *length);
-extern void voyager_smp_intr_init(void);
-extern __u8 voyager_extended_cmos_read(__u16 cmos_address);
-extern void voyager_smp_dump(void);
-extern void voyager_timer_interrupt(void);
-extern void smp_local_timer_interrupt(void);
-extern void voyager_power_off(void);
-extern void smp_voyager_power_off(void *dummy);
-extern void voyager_restart(void);
-extern void voyager_cat_power_off(void);
-extern void voyager_cat_do_common_interrupt(void);
-extern void voyager_handle_nmi(void);
-extern void voyager_smp_intr_init(void);
-/* Commands for the following are */
-#define VOYAGER_PSI_READ 0
-#define VOYAGER_PSI_WRITE 1
-#define VOYAGER_PSI_SUBREAD 2
-#define VOYAGER_PSI_SUBWRITE 3
-extern void voyager_cat_psi(__u8, __u16, __u8 *);
-
-/* These define the CPIs we use in linux */
-#define VIC_CPI_LEVEL0 0
-#define VIC_CPI_LEVEL1 1
-/* now the fake CPIs */
-#define VIC_TIMER_CPI 2
-#define VIC_INVALIDATE_CPI 3
-#define VIC_RESCHEDULE_CPI 4
-#define VIC_ENABLE_IRQ_CPI 5
-#define VIC_CALL_FUNCTION_CPI 6
-#define VIC_CALL_FUNCTION_SINGLE_CPI 7
-
-/* Now the QIC CPIs: Since we don't need the two initial levels,
- * these are 2 less than the VIC CPIs */
-#define QIC_CPI_OFFSET 1
-#define QIC_TIMER_CPI (VIC_TIMER_CPI - QIC_CPI_OFFSET)
-#define QIC_INVALIDATE_CPI (VIC_INVALIDATE_CPI - QIC_CPI_OFFSET)
-#define QIC_RESCHEDULE_CPI (VIC_RESCHEDULE_CPI - QIC_CPI_OFFSET)
-#define QIC_ENABLE_IRQ_CPI (VIC_ENABLE_IRQ_CPI - QIC_CPI_OFFSET)
-#define QIC_CALL_FUNCTION_CPI (VIC_CALL_FUNCTION_CPI - QIC_CPI_OFFSET)
-#define QIC_CALL_FUNCTION_SINGLE_CPI (VIC_CALL_FUNCTION_SINGLE_CPI - QIC_CPI_OFFSET)
-
-#define VIC_START_FAKE_CPI VIC_TIMER_CPI
-#define VIC_END_FAKE_CPI VIC_CALL_FUNCTION_SINGLE_CPI
-
-/* this is the SYS_INT CPI. */
-#define VIC_SYS_INT 8
-#define VIC_CMN_INT 15
-
-/* This is the boot CPI for alternate processors. It gets overwritten
- * by the above once the system has activated all available processors */
-#define VIC_CPU_BOOT_CPI VIC_CPI_LEVEL0
-#define VIC_CPU_BOOT_ERRATA_CPI (VIC_CPI_LEVEL0 + 8)
-
-extern asmlinkage void vic_cpi_interrupt(void);
-extern asmlinkage void vic_sys_interrupt(void);
-extern asmlinkage void vic_cmn_interrupt(void);
-extern asmlinkage void qic_timer_interrupt(void);
-extern asmlinkage void qic_invalidate_interrupt(void);
-extern asmlinkage void qic_reschedule_interrupt(void);
-extern asmlinkage void qic_enable_irq_interrupt(void);
-extern asmlinkage void qic_call_function_interrupt(void);
select PARAVIRT
depends on X86_32
depends on !X86_PAE
- depends on !X86_VOYAGER
select VIRTIO
select VIRTIO_RING
select VIRTIO_CONSOLE
+++ /dev/null
-#
-# Makefile for the linux kernel.
-#
-
-EXTRA_CFLAGS := -Iarch/x86/kernel
-obj-y := setup.o voyager_basic.o voyager_thread.o
-
-obj-$(CONFIG_SMP) += voyager_smp.o voyager_cat.o
+++ /dev/null
-/*
- * Machine specific setup for generic
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <asm/arch_hooks.h>
-#include <asm/voyager.h>
-#include <asm/e820.h>
-#include <asm/io.h>
-#include <asm/setup.h>
-#include <asm/cpu.h>
-
-void __init pre_intr_init_hook(void)
-{
- init_ISA_irqs();
-}
-
-/*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
-static struct irqaction irq2 = {
- .handler = no_action,
- .mask = CPU_MASK_NONE,
- .name = "cascade",
-};
-
-void __init intr_init_hook(void)
-{
-#ifdef CONFIG_SMP
- voyager_smp_intr_init();
-#endif
-
- setup_irq(2, &irq2);
-}
-
-static void voyager_disable_tsc(void)
-{
- /* Voyagers run their CPUs from independent clocks, so disable
- * the TSC code because we can't sync them */
- setup_clear_cpu_cap(X86_FEATURE_TSC);
-}
-
-void __init pre_setup_arch_hook(void)
-{
- voyager_disable_tsc();
-}
-
-void __init pre_time_init_hook(void)
-{
- voyager_disable_tsc();
-}
-
-void __init trap_init_hook(void)
-{
-}
-
-static struct irqaction irq0 = {
- .handler = timer_interrupt,
- .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
- .mask = CPU_MASK_NONE,
- .name = "timer"
-};
-
-void __init time_init_hook(void)
-{
- irq0.mask = cpumask_of_cpu(safe_smp_processor_id());
- setup_irq(0, &irq0);
-}
-
-/* Hook for machine specific memory setup. */
-
-char *__init machine_specific_memory_setup(void)
-{
- char *who;
- int new_nr;
-
- who = "NOT VOYAGER";
-
- if (voyager_level == 5) {
- __u32 addr, length;
- int i;
-
- who = "Voyager-SUS";
-
- e820.nr_map = 0;
- for (i = 0; voyager_memory_detect(i, &addr, &length); i++) {
- e820_add_region(addr, length, E820_RAM);
- }
- return who;
- } else if (voyager_level == 4) {
- __u32 tom;
- __u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT) << 8;
- /* select the DINO config space */
- outb(VOYAGER_DINO, VOYAGER_CAT_CONFIG_PORT);
- /* Read DINO top of memory register */
- tom = ((inb(catbase + 0x4) & 0xf0) << 16)
- + ((inb(catbase + 0x5) & 0x7f) << 24);
-
- if (inb(catbase) != VOYAGER_DINO) {
- printk(KERN_ERR
- "Voyager: Failed to get DINO for L4, setting tom to EXT_MEM_K\n");
- tom = (boot_params.screen_info.ext_mem_k) << 10;
- }
- who = "Voyager-TOM";
- e820_add_region(0, 0x9f000, E820_RAM);
- /* map from 1M to top of memory */
- e820_add_region(1 * 1024 * 1024, tom - 1 * 1024 * 1024,
- E820_RAM);
- /* FIXME: Should check the ASICs to see if I need to
- * take out the 8M window. Just do it at the moment
- * */
- e820_add_region(8 * 1024 * 1024, 8 * 1024 * 1024,
- E820_RESERVED);
- return who;
- }
-
- return default_machine_specific_memory_setup();
-}
+++ /dev/null
-/* Copyright (C) 1999,2001
- *
- * Author: J.E.J.Bottomley@HansenPartnership.com
- *
- * This file contains all the voyager specific routines for getting
- * initialisation of the architecture to function. For additional
- * features see:
- *
- * voyager_cat.c - Voyager CAT bus interface
- * voyager_smp.c - Voyager SMP hal (emulates linux smp.c)
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/reboot.h>
-#include <linux/sysrq.h>
-#include <linux/smp.h>
-#include <linux/nodemask.h>
-#include <asm/io.h>
-#include <asm/voyager.h>
-#include <asm/vic.h>
-#include <linux/pm.h>
-#include <asm/tlbflush.h>
-#include <asm/arch_hooks.h>
-#include <asm/i8253.h>
-
-/*
- * Power off function, if any
- */
-void (*pm_power_off) (void);
-EXPORT_SYMBOL(pm_power_off);
-
-int voyager_level = 0;
-
-struct voyager_SUS *voyager_SUS = NULL;
-
-#ifdef CONFIG_SMP
-static void voyager_dump(int dummy1, struct tty_struct *dummy3)
-{
- /* get here via a sysrq */
- voyager_smp_dump();
-}
-
-static struct sysrq_key_op sysrq_voyager_dump_op = {
- .handler = voyager_dump,
- .help_msg = "Voyager",
- .action_msg = "Dump Voyager Status",
-};
-#endif
-
-void voyager_detect(struct voyager_bios_info *bios)
-{
- if (bios->len != 0xff) {
- int class = (bios->class_1 << 8)
- | (bios->class_2 & 0xff);
-
- printk("Voyager System detected.\n"
- " Class %x, Revision %d.%d\n",
- class, bios->major, bios->minor);
- if (class == VOYAGER_LEVEL4)
- voyager_level = 4;
- else if (class < VOYAGER_LEVEL5_AND_ABOVE)
- voyager_level = 3;
- else
- voyager_level = 5;
- printk(" Architecture Level %d\n", voyager_level);
- if (voyager_level < 4)
- printk
- ("\n**WARNING**: Voyager HAL only supports Levels 4 and 5 Architectures at the moment\n\n");
- /* install the power off handler */
- pm_power_off = voyager_power_off;
-#ifdef CONFIG_SMP
- register_sysrq_key('v', &sysrq_voyager_dump_op);
-#endif
- } else {
- printk("\n\n**WARNING**: No Voyager Subsystem Found\n");
- }
-}
-
-void voyager_system_interrupt(int cpl, void *dev_id)
-{
- printk("Voyager: detected system interrupt\n");
-}
-
-/* Routine to read information from the extended CMOS area */
-__u8 voyager_extended_cmos_read(__u16 addr)
-{
- outb(addr & 0xff, 0x74);
- outb((addr >> 8) & 0xff, 0x75);
- return inb(0x76);
-}
-
-/* internal definitions for the SUS Click Map of memory */
-
-#define CLICK_ENTRIES 16
-#define CLICK_SIZE 4096 /* click to byte conversion for Length */
-
-typedef struct ClickMap {
- struct Entry {
- __u32 Address;
- __u32 Length;
- } Entry[CLICK_ENTRIES];
-} ClickMap_t;
-
-/* This routine is pretty much an awful hack to read the bios clickmap by
- * mapping it into page 0. There are usually three regions in the map:
- * Base Memory
- * Extended Memory
- * zero length marker for end of map
- *
- * Returns are 0 for failure and 1 for success on extracting region.
- */
-int __init voyager_memory_detect(int region, __u32 * start, __u32 * length)
-{
- int i;
- int retval = 0;
- __u8 cmos[4];
- ClickMap_t *map;
- unsigned long map_addr;
- unsigned long old;
-
- if (region >= CLICK_ENTRIES) {
- printk("Voyager: Illegal ClickMap region %d\n", region);
- return 0;
- }
-
- for (i = 0; i < sizeof(cmos); i++)
- cmos[i] =
- voyager_extended_cmos_read(VOYAGER_MEMORY_CLICKMAP + i);
-
- map_addr = *(unsigned long *)cmos;
-
- /* steal page 0 for this */
- old = pg0[0];
- pg0[0] = ((map_addr & PAGE_MASK) | _PAGE_RW | _PAGE_PRESENT);
- local_flush_tlb();
- /* now clear everything out but page 0 */
- map = (ClickMap_t *) (map_addr & (~PAGE_MASK));
-
- /* zero length is the end of the clickmap */
- if (map->Entry[region].Length != 0) {
- *length = map->Entry[region].Length * CLICK_SIZE;
- *start = map->Entry[region].Address;
- retval = 1;
- }
-
- /* replace the mapping */
- pg0[0] = old;
- local_flush_tlb();
- return retval;
-}
-
-/* voyager specific handling code for timer interrupts. Used to hand
- * off the timer tick to the SMP code, since the VIC doesn't have an
- * internal timer (The QIC does, but that's another story). */
-void voyager_timer_interrupt(void)
-{
- if ((jiffies & 0x3ff) == 0) {
-
- /* There seems to be something flaky in either
- * hardware or software that is resetting the timer 0
- * count to something much higher than it should be
- * This seems to occur in the boot sequence, just
- * before root is mounted. Therefore, every 10
- * seconds or so, we sanity check the timer zero count
- * and kick it back to where it should be.
- *
- * FIXME: This is the most awful hack yet seen. I
- * should work out exactly what is interfering with
- * the timer count settings early in the boot sequence
- * and swiftly introduce it to something sharp and
- * pointy. */
- __u16 val;
-
- spin_lock(&i8253_lock);
-
- outb_p(0x00, 0x43);
- val = inb_p(0x40);
- val |= inb(0x40) << 8;
- spin_unlock(&i8253_lock);
-
- if (val > LATCH) {
- printk
- ("\nVOYAGER: countdown timer value too high (%d), resetting\n\n",
- val);
- spin_lock(&i8253_lock);
- outb(0x34, 0x43);
- outb_p(LATCH & 0xff, 0x40); /* LSB */
- outb(LATCH >> 8, 0x40); /* MSB */
- spin_unlock(&i8253_lock);
- }
- }
-#ifdef CONFIG_SMP
- smp_vic_timer_interrupt();
-#endif
-}
-
-void voyager_power_off(void)
-{
- printk("VOYAGER Power Off\n");
-
- if (voyager_level == 5) {
- voyager_cat_power_off();
- } else if (voyager_level == 4) {
- /* This doesn't apparently work on most L4 machines,
- * but the specs say to do this to get automatic power
- * off. Unfortunately, if it doesn't power off the
- * machine, it ends up doing a cold restart, which
- * isn't really intended, so comment out the code */
-#if 0
- int port;
-
- /* enable the voyager Configuration Space */
- outb((inb(VOYAGER_MC_SETUP) & 0xf0) | 0x8, VOYAGER_MC_SETUP);
- /* the port for the power off flag is an offset from the
- floating base */
- port = (inb(VOYAGER_SSPB_RELOCATION_PORT) << 8) + 0x21;
- /* set the power off flag */
- outb(inb(port) | 0x1, port);
-#endif
- }
- /* and wait for it to happen */
- local_irq_disable();
- for (;;)
- halt();
-}
-
-/* copied from process.c */
-static inline void kb_wait(void)
-{
- int i;
-
- for (i = 0; i < 0x10000; i++)
- if ((inb_p(0x64) & 0x02) == 0)
- break;
-}
-
-void machine_shutdown(void)
-{
- /* Architecture specific shutdown needed before a kexec */
-}
-
-void machine_restart(char *cmd)
-{
- printk("Voyager Warm Restart\n");
- kb_wait();
-
- if (voyager_level == 5) {
- /* write magic values to the RTC to inform system that
- * shutdown is beginning */
- outb(0x8f, 0x70);
- outb(0x5, 0x71);
-
- udelay(50);
- outb(0xfe, 0x64); /* pull reset low */
- } else if (voyager_level == 4) {
- __u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT) << 8;
- __u8 basebd = inb(VOYAGER_MC_SETUP);
-
- outb(basebd | 0x08, VOYAGER_MC_SETUP);
- outb(0x02, catbase + 0x21);
- }
- local_irq_disable();
- for (;;)
- halt();
-}
-
-void machine_emergency_restart(void)
-{
- /*for now, just hook this to a warm restart */
- machine_restart(NULL);
-}
-
-void mca_nmi_hook(void)
-{
- __u8 dumpval __maybe_unused = inb(0xf823);
- __u8 swnmi __maybe_unused = inb(0xf813);
-
- /* FIXME: assume dump switch pressed */
- /* check to see if the dump switch was pressed */
- VDEBUG(("VOYAGER: dumpval = 0x%x, swnmi = 0x%x\n", dumpval, swnmi));
- /* clear swnmi */
- outb(0xff, 0xf813);
- /* tell SUS to ignore dump */
- if (voyager_level == 5 && voyager_SUS != NULL) {
- if (voyager_SUS->SUS_mbox == VOYAGER_DUMP_BUTTON_NMI) {
- voyager_SUS->kernel_mbox = VOYAGER_NO_COMMAND;
- voyager_SUS->kernel_flags |= VOYAGER_OS_IN_PROGRESS;
- udelay(1000);
- voyager_SUS->kernel_mbox = VOYAGER_IGNORE_DUMP;
- voyager_SUS->kernel_flags &= ~VOYAGER_OS_IN_PROGRESS;
- }
- }
- printk(KERN_ERR
- "VOYAGER: Dump switch pressed, printing CPU%d tracebacks\n",
- smp_processor_id());
- show_stack(NULL, NULL);
- show_state();
-}
-
-void machine_halt(void)
-{
- /* treat a halt like a power off */
- machine_power_off();
-}
-
-void machine_power_off(void)
-{
- if (pm_power_off)
- pm_power_off();
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8 -*- */
-
-/* Copyright (C) 1999,2001
- *
- * Author: J.E.J.Bottomley@HansenPartnership.com
- *
- * This file contains all the logic for manipulating the CAT bus
- * in a level 5 machine.
- *
- * The CAT bus is a serial configuration and test bus. Its primary
- * uses are to probe the initial configuration of the system and to
- * diagnose error conditions when a system interrupt occurs. The low
- * level interface is fairly primitive, so most of this file consists
- * of bit shift manipulations to send and receive packets on the
- * serial bus */
-
-#include <linux/types.h>
-#include <linux/completion.h>
-#include <linux/sched.h>
-#include <asm/voyager.h>
-#include <asm/vic.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <asm/io.h>
-
-#ifdef VOYAGER_CAT_DEBUG
-#define CDEBUG(x) printk x
-#else
-#define CDEBUG(x)
-#endif
-
-/* the CAT command port */
-#define CAT_CMD (sspb + 0xe)
-/* the CAT data port */
-#define CAT_DATA (sspb + 0xd)
-
-/* the internal cat functions */
-static void cat_pack(__u8 * msg, __u16 start_bit, __u8 * data, __u16 num_bits);
-static void cat_unpack(__u8 * msg, __u16 start_bit, __u8 * data,
- __u16 num_bits);
-static void cat_build_header(__u8 * header, const __u16 len,
- const __u16 smallest_reg_bits,
- const __u16 longest_reg_bits);
-static int cat_sendinst(voyager_module_t * modp, voyager_asic_t * asicp,
- __u8 reg, __u8 op);
-static int cat_getdata(voyager_module_t * modp, voyager_asic_t * asicp,
- __u8 reg, __u8 * value);
-static int cat_shiftout(__u8 * data, __u16 data_bytes, __u16 header_bytes,
- __u8 pad_bits);
-static int cat_write(voyager_module_t * modp, voyager_asic_t * asicp, __u8 reg,
- __u8 value);
-static int cat_read(voyager_module_t * modp, voyager_asic_t * asicp, __u8 reg,
- __u8 * value);
-static int cat_subread(voyager_module_t * modp, voyager_asic_t * asicp,
- __u16 offset, __u16 len, void *buf);
-static int cat_senddata(voyager_module_t * modp, voyager_asic_t * asicp,
- __u8 reg, __u8 value);
-static int cat_disconnect(voyager_module_t * modp, voyager_asic_t * asicp);
-static int cat_connect(voyager_module_t * modp, voyager_asic_t * asicp);
-
-static inline const char *cat_module_name(int module_id)
-{
- switch (module_id) {
- case 0x10:
- return "Processor Slot 0";
- case 0x11:
- return "Processor Slot 1";
- case 0x12:
- return "Processor Slot 2";
- case 0x13:
- return "Processor Slot 4";
- case 0x14:
- return "Memory Slot 0";
- case 0x15:
- return "Memory Slot 1";
- case 0x18:
- return "Primary Microchannel";
- case 0x19:
- return "Secondary Microchannel";
- case 0x1a:
- return "Power Supply Interface";
- case 0x1c:
- return "Processor Slot 5";
- case 0x1d:
- return "Processor Slot 6";
- case 0x1e:
- return "Processor Slot 7";
- case 0x1f:
- return "Processor Slot 8";
- default:
- return "Unknown Module";
- }
-}
-
-static int sspb = 0; /* stores the super port location */
-int voyager_8slot = 0; /* set to true if a 51xx monster */
-
-voyager_module_t *voyager_cat_list;
-
-/* the I/O port assignments for the VIC and QIC */
-static struct resource vic_res = {
- .name = "Voyager Interrupt Controller",
- .start = 0xFC00,
- .end = 0xFC6F
-};
-static struct resource qic_res = {
- .name = "Quad Interrupt Controller",
- .start = 0xFC70,
- .end = 0xFCFF
-};
-
-/* This function is used to pack a data bit stream inside a message.
- * It writes num_bits of the data buffer in msg starting at start_bit.
- * Note: This function assumes that any unused bit in the data stream
- * is set to zero so that the ors will work correctly */
-static void
-cat_pack(__u8 * msg, const __u16 start_bit, __u8 * data, const __u16 num_bits)
-{
- /* compute initial shift needed */
- const __u16 offset = start_bit % BITS_PER_BYTE;
- __u16 len = num_bits / BITS_PER_BYTE;
- __u16 byte = start_bit / BITS_PER_BYTE;
- __u16 residue = (num_bits % BITS_PER_BYTE) + offset;
- int i;
-
- /* adjust if we have more than a byte of residue */
- if (residue >= BITS_PER_BYTE) {
- residue -= BITS_PER_BYTE;
- len++;
- }
-
- /* clear out the bits. We assume here that if len==0 then
- * residue >= offset. This is always true for the catbus
- * operations */
- msg[byte] &= 0xff << (BITS_PER_BYTE - offset);
- msg[byte++] |= data[0] >> offset;
- if (len == 0)
- return;
- for (i = 1; i < len; i++)
- msg[byte++] = (data[i - 1] << (BITS_PER_BYTE - offset))
- | (data[i] >> offset);
- if (residue != 0) {
- __u8 mask = 0xff >> residue;
- __u8 last_byte = data[i - 1] << (BITS_PER_BYTE - offset)
- | (data[i] >> offset);
-
- last_byte &= ~mask;
- msg[byte] &= mask;
- msg[byte] |= last_byte;
- }
- return;
-}
-
-/* unpack the data again (same arguments as cat_pack()). data buffer
- * must be zero populated.
- *
- * Function: given a message string move to start_bit and copy num_bits into
- * data (starting at bit 0 in data).
- */
-static void
-cat_unpack(__u8 * msg, const __u16 start_bit, __u8 * data, const __u16 num_bits)
-{
- /* compute initial shift needed */
- const __u16 offset = start_bit % BITS_PER_BYTE;
- __u16 len = num_bits / BITS_PER_BYTE;
- const __u8 last_bits = num_bits % BITS_PER_BYTE;
- __u16 byte = start_bit / BITS_PER_BYTE;
- int i;
-
- if (last_bits != 0)
- len++;
-
- /* special case: want < 8 bits from msg and we can get it from
- * a single byte of the msg */
- if (len == 0 && BITS_PER_BYTE - offset >= num_bits) {
- data[0] = msg[byte] << offset;
- data[0] &= 0xff >> (BITS_PER_BYTE - num_bits);
- return;
- }
- for (i = 0; i < len; i++) {
- /* this annoying if has to be done just in case a read of
- * msg one beyond the array causes a panic */
- if (offset != 0) {
- data[i] = msg[byte++] << offset;
- data[i] |= msg[byte] >> (BITS_PER_BYTE - offset);
- } else {
- data[i] = msg[byte++];
- }
- }
- /* do we need to truncate the final byte */
- if (last_bits != 0) {
- data[i - 1] &= 0xff << (BITS_PER_BYTE - last_bits);
- }
- return;
-}
-
-static void
-cat_build_header(__u8 * header, const __u16 len, const __u16 smallest_reg_bits,
- const __u16 longest_reg_bits)
-{
- int i;
- __u16 start_bit = (smallest_reg_bits - 1) % BITS_PER_BYTE;
- __u8 *last_byte = &header[len - 1];
-
- if (start_bit == 0)
- start_bit = 1; /* must have at least one bit in the hdr */
-
- for (i = 0; i < len; i++)
- header[i] = 0;
-
- for (i = start_bit; i > 0; i--)
- *last_byte = ((*last_byte) << 1) + 1;
-
-}
-
-static int
-cat_sendinst(voyager_module_t * modp, voyager_asic_t * asicp, __u8 reg, __u8 op)
-{
- __u8 parity, inst, inst_buf[4] = { 0 };
- __u8 iseq[VOYAGER_MAX_SCAN_PATH], hseq[VOYAGER_MAX_REG_SIZE];
- __u16 ibytes, hbytes, padbits;
- int i;
-
- /*
- * Parity is the parity of the register number + 1 (READ_REGISTER
- * and WRITE_REGISTER always add '1' to the number of bits == 1)
- */
- parity = (__u8) (1 + (reg & 0x01) +
- ((__u8) (reg & 0x02) >> 1) +
- ((__u8) (reg & 0x04) >> 2) +
- ((__u8) (reg & 0x08) >> 3)) % 2;
-
- inst = ((parity << 7) | (reg << 2) | op);
-
- outb(VOYAGER_CAT_IRCYC, CAT_CMD);
- if (!modp->scan_path_connected) {
- if (asicp->asic_id != VOYAGER_CAT_ID) {
- printk
- ("**WARNING***: cat_sendinst has disconnected scan path not to CAT asic\n");
- return 1;
- }
- outb(VOYAGER_CAT_HEADER, CAT_DATA);
- outb(inst, CAT_DATA);
- if (inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
- CDEBUG(("VOYAGER CAT: cat_sendinst failed to get CAT_HEADER\n"));
- return 1;
- }
- return 0;
- }
- ibytes = modp->inst_bits / BITS_PER_BYTE;
- if ((padbits = modp->inst_bits % BITS_PER_BYTE) != 0) {
- padbits = BITS_PER_BYTE - padbits;
- ibytes++;
- }
- hbytes = modp->largest_reg / BITS_PER_BYTE;
- if (modp->largest_reg % BITS_PER_BYTE)
- hbytes++;
- CDEBUG(("cat_sendinst: ibytes=%d, hbytes=%d\n", ibytes, hbytes));
- /* initialise the instruction sequence to 0xff */
- for (i = 0; i < ibytes + hbytes; i++)
- iseq[i] = 0xff;
- cat_build_header(hseq, hbytes, modp->smallest_reg, modp->largest_reg);
- cat_pack(iseq, modp->inst_bits, hseq, hbytes * BITS_PER_BYTE);
- inst_buf[0] = inst;
- inst_buf[1] = 0xFF >> (modp->largest_reg % BITS_PER_BYTE);
- cat_pack(iseq, asicp->bit_location, inst_buf, asicp->ireg_length);
-#ifdef VOYAGER_CAT_DEBUG
- printk("ins = 0x%x, iseq: ", inst);
- for (i = 0; i < ibytes + hbytes; i++)
- printk("0x%x ", iseq[i]);
- printk("\n");
-#endif
- if (cat_shiftout(iseq, ibytes, hbytes, padbits)) {
- CDEBUG(("VOYAGER CAT: cat_sendinst: cat_shiftout failed\n"));
- return 1;
- }
- CDEBUG(("CAT SHIFTOUT DONE\n"));
- return 0;
-}
-
-static int
-cat_getdata(voyager_module_t * modp, voyager_asic_t * asicp, __u8 reg,
- __u8 * value)
-{
- if (!modp->scan_path_connected) {
- if (asicp->asic_id != VOYAGER_CAT_ID) {
- CDEBUG(("VOYAGER CAT: ERROR: cat_getdata to CAT asic with scan path connected\n"));
- return 1;
- }
- if (reg > VOYAGER_SUBADDRHI)
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- outb(VOYAGER_CAT_DRCYC, CAT_CMD);
- outb(VOYAGER_CAT_HEADER, CAT_DATA);
- *value = inb(CAT_DATA);
- outb(0xAA, CAT_DATA);
- if (inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
- CDEBUG(("cat_getdata: failed to get VOYAGER_CAT_HEADER\n"));
- return 1;
- }
- return 0;
- } else {
- __u16 sbits = modp->num_asics - 1 + asicp->ireg_length;
- __u16 sbytes = sbits / BITS_PER_BYTE;
- __u16 tbytes;
- __u8 string[VOYAGER_MAX_SCAN_PATH],
- trailer[VOYAGER_MAX_REG_SIZE];
- __u8 padbits;
- int i;
-
- outb(VOYAGER_CAT_DRCYC, CAT_CMD);
-
- if ((padbits = sbits % BITS_PER_BYTE) != 0) {
- padbits = BITS_PER_BYTE - padbits;
- sbytes++;
- }
- tbytes = asicp->ireg_length / BITS_PER_BYTE;
- if (asicp->ireg_length % BITS_PER_BYTE)
- tbytes++;
- CDEBUG(("cat_getdata: tbytes = %d, sbytes = %d, padbits = %d\n",
- tbytes, sbytes, padbits));
- cat_build_header(trailer, tbytes, 1, asicp->ireg_length);
-
- for (i = tbytes - 1; i >= 0; i--) {
- outb(trailer[i], CAT_DATA);
- string[sbytes + i] = inb(CAT_DATA);
- }
-
- for (i = sbytes - 1; i >= 0; i--) {
- outb(0xaa, CAT_DATA);
- string[i] = inb(CAT_DATA);
- }
- *value = 0;
- cat_unpack(string,
- padbits + (tbytes * BITS_PER_BYTE) +
- asicp->asic_location, value, asicp->ireg_length);
-#ifdef VOYAGER_CAT_DEBUG
- printk("value=0x%x, string: ", *value);
- for (i = 0; i < tbytes + sbytes; i++)
- printk("0x%x ", string[i]);
- printk("\n");
-#endif
-
- /* sanity check the rest of the return */
- for (i = 0; i < tbytes; i++) {
- __u8 input = 0;
-
- cat_unpack(string, padbits + (i * BITS_PER_BYTE),
- &input, BITS_PER_BYTE);
- if (trailer[i] != input) {
- CDEBUG(("cat_getdata: failed to sanity check rest of ret(%d) 0x%x != 0x%x\n", i, input, trailer[i]));
- return 1;
- }
- }
- CDEBUG(("cat_getdata DONE\n"));
- return 0;
- }
-}
-
-static int
-cat_shiftout(__u8 * data, __u16 data_bytes, __u16 header_bytes, __u8 pad_bits)
-{
- int i;
-
- for (i = data_bytes + header_bytes - 1; i >= header_bytes; i--)
- outb(data[i], CAT_DATA);
-
- for (i = header_bytes - 1; i >= 0; i--) {
- __u8 header = 0;
- __u8 input;
-
- outb(data[i], CAT_DATA);
- input = inb(CAT_DATA);
- CDEBUG(("cat_shiftout: returned 0x%x\n", input));
- cat_unpack(data, ((data_bytes + i) * BITS_PER_BYTE) - pad_bits,
- &header, BITS_PER_BYTE);
- if (input != header) {
- CDEBUG(("VOYAGER CAT: cat_shiftout failed to return header 0x%x != 0x%x\n", input, header));
- return 1;
- }
- }
- return 0;
-}
-
-static int
-cat_senddata(voyager_module_t * modp, voyager_asic_t * asicp,
- __u8 reg, __u8 value)
-{
- outb(VOYAGER_CAT_DRCYC, CAT_CMD);
- if (!modp->scan_path_connected) {
- if (asicp->asic_id != VOYAGER_CAT_ID) {
- CDEBUG(("VOYAGER CAT: ERROR: scan path disconnected when asic != CAT\n"));
- return 1;
- }
- outb(VOYAGER_CAT_HEADER, CAT_DATA);
- outb(value, CAT_DATA);
- if (inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
- CDEBUG(("cat_senddata: failed to get correct header response to sent data\n"));
- return 1;
- }
- if (reg > VOYAGER_SUBADDRHI) {
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- outb(VOYAGER_CAT_END, CAT_CMD);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- }
-
- return 0;
- } else {
- __u16 hbytes = asicp->ireg_length / BITS_PER_BYTE;
- __u16 dbytes =
- (modp->num_asics - 1 + asicp->ireg_length) / BITS_PER_BYTE;
- __u8 padbits, dseq[VOYAGER_MAX_SCAN_PATH],
- hseq[VOYAGER_MAX_REG_SIZE];
- int i;
-
- if ((padbits = (modp->num_asics - 1
- + asicp->ireg_length) % BITS_PER_BYTE) != 0) {
- padbits = BITS_PER_BYTE - padbits;
- dbytes++;
- }
- if (asicp->ireg_length % BITS_PER_BYTE)
- hbytes++;
-
- cat_build_header(hseq, hbytes, 1, asicp->ireg_length);
-
- for (i = 0; i < dbytes + hbytes; i++)
- dseq[i] = 0xff;
- CDEBUG(("cat_senddata: dbytes=%d, hbytes=%d, padbits=%d\n",
- dbytes, hbytes, padbits));
- cat_pack(dseq, modp->num_asics - 1 + asicp->ireg_length,
- hseq, hbytes * BITS_PER_BYTE);
- cat_pack(dseq, asicp->asic_location, &value,
- asicp->ireg_length);
-#ifdef VOYAGER_CAT_DEBUG
- printk("dseq ");
- for (i = 0; i < hbytes + dbytes; i++) {
- printk("0x%x ", dseq[i]);
- }
- printk("\n");
-#endif
- return cat_shiftout(dseq, dbytes, hbytes, padbits);
- }
-}
-
-static int
-cat_write(voyager_module_t * modp, voyager_asic_t * asicp, __u8 reg, __u8 value)
-{
- if (cat_sendinst(modp, asicp, reg, VOYAGER_WRITE_CONFIG))
- return 1;
- return cat_senddata(modp, asicp, reg, value);
-}
-
-static int
-cat_read(voyager_module_t * modp, voyager_asic_t * asicp, __u8 reg,
- __u8 * value)
-{
- if (cat_sendinst(modp, asicp, reg, VOYAGER_READ_CONFIG))
- return 1;
- return cat_getdata(modp, asicp, reg, value);
-}
-
-static int
-cat_subaddrsetup(voyager_module_t * modp, voyager_asic_t * asicp, __u16 offset,
- __u16 len)
-{
- __u8 val;
-
- if (len > 1) {
- /* set auto increment */
- __u8 newval;
-
- if (cat_read(modp, asicp, VOYAGER_AUTO_INC_REG, &val)) {
- CDEBUG(("cat_subaddrsetup: read of VOYAGER_AUTO_INC_REG failed\n"));
- return 1;
- }
- CDEBUG(("cat_subaddrsetup: VOYAGER_AUTO_INC_REG = 0x%x\n",
- val));
- newval = val | VOYAGER_AUTO_INC;
- if (newval != val) {
- if (cat_write(modp, asicp, VOYAGER_AUTO_INC_REG, val)) {
- CDEBUG(("cat_subaddrsetup: write to VOYAGER_AUTO_INC_REG failed\n"));
- return 1;
- }
- }
- }
- if (cat_write(modp, asicp, VOYAGER_SUBADDRLO, (__u8) (offset & 0xff))) {
- CDEBUG(("cat_subaddrsetup: write to SUBADDRLO failed\n"));
- return 1;
- }
- if (asicp->subaddr > VOYAGER_SUBADDR_LO) {
- if (cat_write
- (modp, asicp, VOYAGER_SUBADDRHI, (__u8) (offset >> 8))) {
- CDEBUG(("cat_subaddrsetup: write to SUBADDRHI failed\n"));
- return 1;
- }
- cat_read(modp, asicp, VOYAGER_SUBADDRHI, &val);
- CDEBUG(("cat_subaddrsetup: offset = %d, hi = %d\n", offset,
- val));
- }
- cat_read(modp, asicp, VOYAGER_SUBADDRLO, &val);
- CDEBUG(("cat_subaddrsetup: offset = %d, lo = %d\n", offset, val));
- return 0;
-}
-
-static int
-cat_subwrite(voyager_module_t * modp, voyager_asic_t * asicp, __u16 offset,
- __u16 len, void *buf)
-{
- int i, retval;
-
- /* FIXME: need special actions for VOYAGER_CAT_ID here */
- if (asicp->asic_id == VOYAGER_CAT_ID) {
- CDEBUG(("cat_subwrite: ATTEMPT TO WRITE TO CAT ASIC\n"));
- /* FIXME -- This is supposed to be handled better
- * There is a problem writing to the cat asic in the
- * PSI. The 30us delay seems to work, though */
- udelay(30);
- }
-
- if ((retval = cat_subaddrsetup(modp, asicp, offset, len)) != 0) {
- printk("cat_subwrite: cat_subaddrsetup FAILED\n");
- return retval;
- }
-
- if (cat_sendinst
- (modp, asicp, VOYAGER_SUBADDRDATA, VOYAGER_WRITE_CONFIG)) {
- printk("cat_subwrite: cat_sendinst FAILED\n");
- return 1;
- }
- for (i = 0; i < len; i++) {
- if (cat_senddata(modp, asicp, 0xFF, ((__u8 *) buf)[i])) {
- printk
- ("cat_subwrite: cat_sendata element at %d FAILED\n",
- i);
- return 1;
- }
- }
- return 0;
-}
-static int
-cat_subread(voyager_module_t * modp, voyager_asic_t * asicp, __u16 offset,
- __u16 len, void *buf)
-{
- int i, retval;
-
- if ((retval = cat_subaddrsetup(modp, asicp, offset, len)) != 0) {
- CDEBUG(("cat_subread: cat_subaddrsetup FAILED\n"));
- return retval;
- }
-
- if (cat_sendinst(modp, asicp, VOYAGER_SUBADDRDATA, VOYAGER_READ_CONFIG)) {
- CDEBUG(("cat_subread: cat_sendinst failed\n"));
- return 1;
- }
- for (i = 0; i < len; i++) {
- if (cat_getdata(modp, asicp, 0xFF, &((__u8 *) buf)[i])) {
- CDEBUG(("cat_subread: cat_getdata element %d failed\n",
- i));
- return 1;
- }
- }
- return 0;
-}
-
-/* buffer for storing EPROM data read in during initialisation */
-static __initdata __u8 eprom_buf[0xFFFF];
-static voyager_module_t *voyager_initial_module;
-
-/* Initialise the cat bus components. We assume this is called by the
- * boot cpu *after* all memory initialisation has been done (so we can
- * use kmalloc) but before smp initialisation, so we can probe the SMP
- * configuration and pick up necessary information. */
-void __init voyager_cat_init(void)
-{
- voyager_module_t **modpp = &voyager_initial_module;
- voyager_asic_t **asicpp;
- voyager_asic_t *qabc_asic = NULL;
- int i, j;
- unsigned long qic_addr = 0;
- __u8 qabc_data[0x20];
- __u8 num_submodules, val;
- voyager_eprom_hdr_t *eprom_hdr = (voyager_eprom_hdr_t *) & eprom_buf[0];
-
- __u8 cmos[4];
- unsigned long addr;
-
- /* initiallise the SUS mailbox */
- for (i = 0; i < sizeof(cmos); i++)
- cmos[i] = voyager_extended_cmos_read(VOYAGER_DUMP_LOCATION + i);
- addr = *(unsigned long *)cmos;
- if ((addr & 0xff000000) != 0xff000000) {
- printk(KERN_ERR
- "Voyager failed to get SUS mailbox (addr = 0x%lx\n",
- addr);
- } else {
- static struct resource res;
-
- res.name = "voyager SUS";
- res.start = addr;
- res.end = addr + 0x3ff;
-
- request_resource(&iomem_resource, &res);
- voyager_SUS = (struct voyager_SUS *)
- ioremap(addr, 0x400);
- printk(KERN_NOTICE "Voyager SUS mailbox version 0x%x\n",
- voyager_SUS->SUS_version);
- voyager_SUS->kernel_version = VOYAGER_MAILBOX_VERSION;
- voyager_SUS->kernel_flags = VOYAGER_OS_HAS_SYSINT;
- }
-
- /* clear the processor counts */
- voyager_extended_vic_processors = 0;
- voyager_quad_processors = 0;
-
- printk("VOYAGER: beginning CAT bus probe\n");
- /* set up the SuperSet Port Block which tells us where the
- * CAT communication port is */
- sspb = inb(VOYAGER_SSPB_RELOCATION_PORT) * 0x100;
- VDEBUG(("VOYAGER DEBUG: sspb = 0x%x\n", sspb));
-
- /* now find out if were 8 slot or normal */
- if ((inb(VIC_PROC_WHO_AM_I) & EIGHT_SLOT_IDENTIFIER)
- == EIGHT_SLOT_IDENTIFIER) {
- voyager_8slot = 1;
- printk(KERN_NOTICE
- "Voyager: Eight slot 51xx configuration detected\n");
- }
-
- for (i = VOYAGER_MIN_MODULE; i <= VOYAGER_MAX_MODULE; i++) {
- __u8 input;
- int asic;
- __u16 eprom_size;
- __u16 sp_offset;
-
- outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
- outb(i, VOYAGER_CAT_CONFIG_PORT);
-
- /* check the presence of the module */
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- outb(VOYAGER_CAT_IRCYC, CAT_CMD);
- outb(VOYAGER_CAT_HEADER, CAT_DATA);
- /* stream series of alternating 1's and 0's to stimulate
- * response */
- outb(0xAA, CAT_DATA);
- input = inb(CAT_DATA);
- outb(VOYAGER_CAT_END, CAT_CMD);
- if (input != VOYAGER_CAT_HEADER) {
- continue;
- }
- CDEBUG(("VOYAGER DEBUG: found module id 0x%x, %s\n", i,
- cat_module_name(i)));
- *modpp = kmalloc(sizeof(voyager_module_t), GFP_KERNEL); /*&voyager_module_storage[cat_count++]; */
- if (*modpp == NULL) {
- printk("**WARNING** kmalloc failure in cat_init\n");
- continue;
- }
- memset(*modpp, 0, sizeof(voyager_module_t));
- /* need temporary asic for cat_subread. It will be
- * filled in correctly later */
- (*modpp)->asic = kmalloc(sizeof(voyager_asic_t), GFP_KERNEL); /*&voyager_asic_storage[asic_count]; */
- if ((*modpp)->asic == NULL) {
- printk("**WARNING** kmalloc failure in cat_init\n");
- continue;
- }
- memset((*modpp)->asic, 0, sizeof(voyager_asic_t));
- (*modpp)->asic->asic_id = VOYAGER_CAT_ID;
- (*modpp)->asic->subaddr = VOYAGER_SUBADDR_HI;
- (*modpp)->module_addr = i;
- (*modpp)->scan_path_connected = 0;
- if (i == VOYAGER_PSI) {
- /* Exception leg for modules with no EEPROM */
- printk("Module \"%s\"\n", cat_module_name(i));
- continue;
- }
-
- CDEBUG(("cat_init: Reading eeprom for module 0x%x at offset %d\n", i, VOYAGER_XSUM_END_OFFSET));
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_disconnect(*modpp, (*modpp)->asic);
- if (cat_subread(*modpp, (*modpp)->asic,
- VOYAGER_XSUM_END_OFFSET, sizeof(eprom_size),
- &eprom_size)) {
- printk
- ("**WARNING**: Voyager couldn't read EPROM size for module 0x%x\n",
- i);
- outb(VOYAGER_CAT_END, CAT_CMD);
- continue;
- }
- if (eprom_size > sizeof(eprom_buf)) {
- printk
- ("**WARNING**: Voyager insufficient size to read EPROM data, module 0x%x. Need %d\n",
- i, eprom_size);
- outb(VOYAGER_CAT_END, CAT_CMD);
- continue;
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- CDEBUG(("cat_init: module 0x%x, eeprom_size %d\n", i,
- eprom_size));
- if (cat_subread
- (*modpp, (*modpp)->asic, 0, eprom_size, eprom_buf)) {
- outb(VOYAGER_CAT_END, CAT_CMD);
- continue;
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
- printk("Module \"%s\", version 0x%x, tracer 0x%x, asics %d\n",
- cat_module_name(i), eprom_hdr->version_id,
- *((__u32 *) eprom_hdr->tracer), eprom_hdr->num_asics);
- (*modpp)->ee_size = eprom_hdr->ee_size;
- (*modpp)->num_asics = eprom_hdr->num_asics;
- asicpp = &((*modpp)->asic);
- sp_offset = eprom_hdr->scan_path_offset;
- /* All we really care about are the Quad cards. We
- * identify them because they are in a processor slot
- * and have only four asics */
- if ((i < 0x10 || (i >= 0x14 && i < 0x1c) || i > 0x1f)) {
- modpp = &((*modpp)->next);
- continue;
- }
- /* Now we know it's in a processor slot, does it have
- * a quad baseboard submodule */
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_read(*modpp, (*modpp)->asic, VOYAGER_SUBMODPRESENT,
- &num_submodules);
- /* lowest two bits, active low */
- num_submodules = ~(0xfc | num_submodules);
- CDEBUG(("VOYAGER CAT: %d submodules present\n",
- num_submodules));
- if (num_submodules == 0) {
- /* fill in the dyadic extended processors */
- __u8 cpu = i & 0x07;
-
- printk("Module \"%s\": Dyadic Processor Card\n",
- cat_module_name(i));
- voyager_extended_vic_processors |= (1 << cpu);
- cpu += 4;
- voyager_extended_vic_processors |= (1 << cpu);
- outb(VOYAGER_CAT_END, CAT_CMD);
- continue;
- }
-
- /* now we want to read the asics on the first submodule,
- * which should be the quad base board */
-
- cat_read(*modpp, (*modpp)->asic, VOYAGER_SUBMODSELECT, &val);
- CDEBUG(("cat_init: SUBMODSELECT value = 0x%x\n", val));
- val = (val & 0x7c) | VOYAGER_QUAD_BASEBOARD;
- cat_write(*modpp, (*modpp)->asic, VOYAGER_SUBMODSELECT, val);
-
- outb(VOYAGER_CAT_END, CAT_CMD);
-
- CDEBUG(("cat_init: Reading eeprom for module 0x%x at offset %d\n", i, VOYAGER_XSUM_END_OFFSET));
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_disconnect(*modpp, (*modpp)->asic);
- if (cat_subread(*modpp, (*modpp)->asic,
- VOYAGER_XSUM_END_OFFSET, sizeof(eprom_size),
- &eprom_size)) {
- printk
- ("**WARNING**: Voyager couldn't read EPROM size for module 0x%x\n",
- i);
- outb(VOYAGER_CAT_END, CAT_CMD);
- continue;
- }
- if (eprom_size > sizeof(eprom_buf)) {
- printk
- ("**WARNING**: Voyager insufficient size to read EPROM data, module 0x%x. Need %d\n",
- i, eprom_size);
- outb(VOYAGER_CAT_END, CAT_CMD);
- continue;
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- CDEBUG(("cat_init: module 0x%x, eeprom_size %d\n", i,
- eprom_size));
- if (cat_subread
- (*modpp, (*modpp)->asic, 0, eprom_size, eprom_buf)) {
- outb(VOYAGER_CAT_END, CAT_CMD);
- continue;
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
- /* Now do everything for the QBB submodule 1 */
- (*modpp)->ee_size = eprom_hdr->ee_size;
- (*modpp)->num_asics = eprom_hdr->num_asics;
- asicpp = &((*modpp)->asic);
- sp_offset = eprom_hdr->scan_path_offset;
- /* get rid of the dummy CAT asic and read the real one */
- kfree((*modpp)->asic);
- for (asic = 0; asic < (*modpp)->num_asics; asic++) {
- int j;
- voyager_asic_t *asicp = *asicpp = kzalloc(sizeof(voyager_asic_t), GFP_KERNEL); /*&voyager_asic_storage[asic_count++]; */
- voyager_sp_table_t *sp_table;
- voyager_at_t *asic_table;
- voyager_jtt_t *jtag_table;
-
- if (asicp == NULL) {
- printk
- ("**WARNING** kmalloc failure in cat_init\n");
- continue;
- }
- asicpp = &(asicp->next);
- asicp->asic_location = asic;
- sp_table =
- (voyager_sp_table_t *) (eprom_buf + sp_offset);
- asicp->asic_id = sp_table->asic_id;
- asic_table =
- (voyager_at_t *) (eprom_buf +
- sp_table->asic_data_offset);
- for (j = 0; j < 4; j++)
- asicp->jtag_id[j] = asic_table->jtag_id[j];
- jtag_table =
- (voyager_jtt_t *) (eprom_buf +
- asic_table->jtag_offset);
- asicp->ireg_length = jtag_table->ireg_len;
- asicp->bit_location = (*modpp)->inst_bits;
- (*modpp)->inst_bits += asicp->ireg_length;
- if (asicp->ireg_length > (*modpp)->largest_reg)
- (*modpp)->largest_reg = asicp->ireg_length;
- if (asicp->ireg_length < (*modpp)->smallest_reg ||
- (*modpp)->smallest_reg == 0)
- (*modpp)->smallest_reg = asicp->ireg_length;
- CDEBUG(("asic 0x%x, ireg_length=%d, bit_location=%d\n",
- asicp->asic_id, asicp->ireg_length,
- asicp->bit_location));
- if (asicp->asic_id == VOYAGER_QUAD_QABC) {
- CDEBUG(("VOYAGER CAT: QABC ASIC found\n"));
- qabc_asic = asicp;
- }
- sp_offset += sizeof(voyager_sp_table_t);
- }
- CDEBUG(("Module inst_bits = %d, largest_reg = %d, smallest_reg=%d\n", (*modpp)->inst_bits, (*modpp)->largest_reg, (*modpp)->smallest_reg));
- /* OK, now we have the QUAD ASICs set up, use them.
- * we need to:
- *
- * 1. Find the Memory area for the Quad CPIs.
- * 2. Find the Extended VIC processor
- * 3. Configure a second extended VIC processor (This
- * cannot be done for the 51xx.
- * */
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_connect(*modpp, (*modpp)->asic);
- CDEBUG(("CAT CONNECTED!!\n"));
- cat_subread(*modpp, qabc_asic, 0, sizeof(qabc_data), qabc_data);
- qic_addr = qabc_data[5] << 8;
- qic_addr = (qic_addr | qabc_data[6]) << 8;
- qic_addr = (qic_addr | qabc_data[7]) << 8;
- printk
- ("Module \"%s\": Quad Processor Card; CPI 0x%lx, SET=0x%x\n",
- cat_module_name(i), qic_addr, qabc_data[8]);
-#if 0 /* plumbing fails---FIXME */
- if ((qabc_data[8] & 0xf0) == 0) {
- /* FIXME: 32 way 8 CPU slot monster cannot be
- * plumbed this way---need to check for it */
-
- printk("Plumbing second Extended Quad Processor\n");
- /* second VIC line hardwired to Quad CPU 1 */
- qabc_data[8] |= 0x20;
- cat_subwrite(*modpp, qabc_asic, 8, 1, &qabc_data[8]);
-#ifdef VOYAGER_CAT_DEBUG
- /* verify plumbing */
- cat_subread(*modpp, qabc_asic, 8, 1, &qabc_data[8]);
- if ((qabc_data[8] & 0xf0) == 0) {
- CDEBUG(("PLUMBING FAILED: 0x%x\n",
- qabc_data[8]));
- }
-#endif
- }
-#endif
-
- {
- struct resource *res =
- kzalloc(sizeof(struct resource), GFP_KERNEL);
- res->name = kmalloc(128, GFP_KERNEL);
- sprintf((char *)res->name, "Voyager %s Quad CPI",
- cat_module_name(i));
- res->start = qic_addr;
- res->end = qic_addr + 0x3ff;
- request_resource(&iomem_resource, res);
- }
-
- qic_addr = (unsigned long)ioremap_cache(qic_addr, 0x400);
-
- for (j = 0; j < 4; j++) {
- __u8 cpu;
-
- if (voyager_8slot) {
- /* 8 slot has a different mapping,
- * each slot has only one vic line, so
- * 1 cpu in each slot must be < 8 */
- cpu = (i & 0x07) + j * 8;
- } else {
- cpu = (i & 0x03) + j * 4;
- }
- if ((qabc_data[8] & (1 << j))) {
- voyager_extended_vic_processors |= (1 << cpu);
- }
- if (qabc_data[8] & (1 << (j + 4))) {
- /* Second SET register plumbed: Quad
- * card has two VIC connected CPUs.
- * Secondary cannot be booted as a VIC
- * CPU */
- voyager_extended_vic_processors |= (1 << cpu);
- voyager_allowed_boot_processors &=
- (~(1 << cpu));
- }
-
- voyager_quad_processors |= (1 << cpu);
- voyager_quad_cpi_addr[cpu] = (struct voyager_qic_cpi *)
- (qic_addr + (j << 8));
- CDEBUG(("CPU%d: CPI address 0x%lx\n", cpu,
- (unsigned long)voyager_quad_cpi_addr[cpu]));
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
-
- *asicpp = NULL;
- modpp = &((*modpp)->next);
- }
- *modpp = NULL;
- printk
- ("CAT Bus Initialisation finished: extended procs 0x%x, quad procs 0x%x, allowed vic boot = 0x%x\n",
- voyager_extended_vic_processors, voyager_quad_processors,
- voyager_allowed_boot_processors);
- request_resource(&ioport_resource, &vic_res);
- if (voyager_quad_processors)
- request_resource(&ioport_resource, &qic_res);
- /* set up the front power switch */
-}
-
-int voyager_cat_readb(__u8 module, __u8 asic, int reg)
-{
- return 0;
-}
-
-static int cat_disconnect(voyager_module_t * modp, voyager_asic_t * asicp)
-{
- __u8 val;
- int err = 0;
-
- if (!modp->scan_path_connected)
- return 0;
- if (asicp->asic_id != VOYAGER_CAT_ID) {
- CDEBUG(("cat_disconnect: ASIC is not CAT\n"));
- return 1;
- }
- err = cat_read(modp, asicp, VOYAGER_SCANPATH, &val);
- if (err) {
- CDEBUG(("cat_disconnect: failed to read SCANPATH\n"));
- return err;
- }
- val &= VOYAGER_DISCONNECT_ASIC;
- err = cat_write(modp, asicp, VOYAGER_SCANPATH, val);
- if (err) {
- CDEBUG(("cat_disconnect: failed to write SCANPATH\n"));
- return err;
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- modp->scan_path_connected = 0;
-
- return 0;
-}
-
-static int cat_connect(voyager_module_t * modp, voyager_asic_t * asicp)
-{
- __u8 val;
- int err = 0;
-
- if (modp->scan_path_connected)
- return 0;
- if (asicp->asic_id != VOYAGER_CAT_ID) {
- CDEBUG(("cat_connect: ASIC is not CAT\n"));
- return 1;
- }
-
- err = cat_read(modp, asicp, VOYAGER_SCANPATH, &val);
- if (err) {
- CDEBUG(("cat_connect: failed to read SCANPATH\n"));
- return err;
- }
- val |= VOYAGER_CONNECT_ASIC;
- err = cat_write(modp, asicp, VOYAGER_SCANPATH, val);
- if (err) {
- CDEBUG(("cat_connect: failed to write SCANPATH\n"));
- return err;
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- modp->scan_path_connected = 1;
-
- return 0;
-}
-
-void voyager_cat_power_off(void)
-{
- /* Power the machine off by writing to the PSI over the CAT
- * bus */
- __u8 data;
- voyager_module_t psi = { 0 };
- voyager_asic_t psi_asic = { 0 };
-
- psi.asic = &psi_asic;
- psi.asic->asic_id = VOYAGER_CAT_ID;
- psi.asic->subaddr = VOYAGER_SUBADDR_HI;
- psi.module_addr = VOYAGER_PSI;
- psi.scan_path_connected = 0;
-
- outb(VOYAGER_CAT_END, CAT_CMD);
- /* Connect the PSI to the CAT Bus */
- outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
- outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_disconnect(&psi, &psi_asic);
- /* Read the status */
- cat_subread(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
- outb(VOYAGER_CAT_END, CAT_CMD);
- CDEBUG(("PSI STATUS 0x%x\n", data));
- /* These two writes are power off prep and perform */
- data = PSI_CLEAR;
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
- outb(VOYAGER_CAT_END, CAT_CMD);
- data = PSI_POWER_DOWN;
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
- outb(VOYAGER_CAT_END, CAT_CMD);
-}
-
-struct voyager_status voyager_status = { 0 };
-
-void voyager_cat_psi(__u8 cmd, __u16 reg, __u8 * data)
-{
- voyager_module_t psi = { 0 };
- voyager_asic_t psi_asic = { 0 };
-
- psi.asic = &psi_asic;
- psi.asic->asic_id = VOYAGER_CAT_ID;
- psi.asic->subaddr = VOYAGER_SUBADDR_HI;
- psi.module_addr = VOYAGER_PSI;
- psi.scan_path_connected = 0;
-
- outb(VOYAGER_CAT_END, CAT_CMD);
- /* Connect the PSI to the CAT Bus */
- outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
- outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_disconnect(&psi, &psi_asic);
- switch (cmd) {
- case VOYAGER_PSI_READ:
- cat_read(&psi, &psi_asic, reg, data);
- break;
- case VOYAGER_PSI_WRITE:
- cat_write(&psi, &psi_asic, reg, *data);
- break;
- case VOYAGER_PSI_SUBREAD:
- cat_subread(&psi, &psi_asic, reg, 1, data);
- break;
- case VOYAGER_PSI_SUBWRITE:
- cat_subwrite(&psi, &psi_asic, reg, 1, data);
- break;
- default:
- printk(KERN_ERR "Voyager PSI, unrecognised command %d\n", cmd);
- break;
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
-}
-
-void voyager_cat_do_common_interrupt(void)
-{
- /* This is caused either by a memory parity error or something
- * in the PSI */
- __u8 data;
- voyager_module_t psi = { 0 };
- voyager_asic_t psi_asic = { 0 };
- struct voyager_psi psi_reg;
- int i;
- re_read:
- psi.asic = &psi_asic;
- psi.asic->asic_id = VOYAGER_CAT_ID;
- psi.asic->subaddr = VOYAGER_SUBADDR_HI;
- psi.module_addr = VOYAGER_PSI;
- psi.scan_path_connected = 0;
-
- outb(VOYAGER_CAT_END, CAT_CMD);
- /* Connect the PSI to the CAT Bus */
- outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
- outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_disconnect(&psi, &psi_asic);
- /* Read the status. NOTE: Need to read *all* the PSI regs here
- * otherwise the cmn int will be reasserted */
- for (i = 0; i < sizeof(psi_reg.regs); i++) {
- cat_read(&psi, &psi_asic, i, &((__u8 *) & psi_reg.regs)[i]);
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
- if ((psi_reg.regs.checkbit & 0x02) == 0) {
- psi_reg.regs.checkbit |= 0x02;
- cat_write(&psi, &psi_asic, 5, psi_reg.regs.checkbit);
- printk("VOYAGER RE-READ PSI\n");
- goto re_read;
- }
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- for (i = 0; i < sizeof(psi_reg.subregs); i++) {
- /* This looks strange, but the PSI doesn't do auto increment
- * correctly */
- cat_subread(&psi, &psi_asic, VOYAGER_PSI_SUPPLY_REG + i,
- 1, &((__u8 *) & psi_reg.subregs)[i]);
- }
- outb(VOYAGER_CAT_END, CAT_CMD);
-#ifdef VOYAGER_CAT_DEBUG
- printk("VOYAGER PSI: ");
- for (i = 0; i < sizeof(psi_reg.regs); i++)
- printk("%02x ", ((__u8 *) & psi_reg.regs)[i]);
- printk("\n ");
- for (i = 0; i < sizeof(psi_reg.subregs); i++)
- printk("%02x ", ((__u8 *) & psi_reg.subregs)[i]);
- printk("\n");
-#endif
- if (psi_reg.regs.intstatus & PSI_MON) {
- /* switch off or power fail */
-
- if (psi_reg.subregs.supply & PSI_SWITCH_OFF) {
- if (voyager_status.switch_off) {
- printk(KERN_ERR
- "Voyager front panel switch turned off again---Immediate power off!\n");
- voyager_cat_power_off();
- /* not reached */
- } else {
- printk(KERN_ERR
- "Voyager front panel switch turned off\n");
- voyager_status.switch_off = 1;
- voyager_status.request_from_kernel = 1;
- wake_up_process(voyager_thread);
- }
- /* Tell the hardware we're taking care of the
- * shutdown, otherwise it will power the box off
- * within 3 seconds of the switch being pressed and,
- * which is much more important to us, continue to
- * assert the common interrupt */
- data = PSI_CLR_SWITCH_OFF;
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_SUPPLY_REG,
- 1, &data);
- outb(VOYAGER_CAT_END, CAT_CMD);
- } else {
-
- VDEBUG(("Voyager ac fail reg 0x%x\n",
- psi_reg.subregs.ACfail));
- if ((psi_reg.subregs.ACfail & AC_FAIL_STAT_CHANGE) == 0) {
- /* No further update */
- return;
- }
-#if 0
- /* Don't bother trying to find out who failed.
- * FIXME: This probably makes the code incorrect on
- * anything other than a 345x */
- for (i = 0; i < 5; i++) {
- if (psi_reg.subregs.ACfail & (1 << i)) {
- break;
- }
- }
- printk(KERN_NOTICE "AC FAIL IN SUPPLY %d\n", i);
-#endif
- /* DON'T do this: it shuts down the AC PSI
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- data = PSI_MASK_MASK | i;
- cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_MASK,
- 1, &data);
- outb(VOYAGER_CAT_END, CAT_CMD);
- */
- printk(KERN_ERR "Voyager AC power failure\n");
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- data = PSI_COLD_START;
- cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG,
- 1, &data);
- outb(VOYAGER_CAT_END, CAT_CMD);
- voyager_status.power_fail = 1;
- voyager_status.request_from_kernel = 1;
- wake_up_process(voyager_thread);
- }
-
- } else if (psi_reg.regs.intstatus & PSI_FAULT) {
- /* Major fault! */
- printk(KERN_ERR
- "Voyager PSI Detected major fault, immediate power off!\n");
- voyager_cat_power_off();
- /* not reached */
- } else if (psi_reg.regs.intstatus & (PSI_DC_FAIL | PSI_ALARM
- | PSI_CURRENT | PSI_DVM
- | PSI_PSCFAULT | PSI_STAT_CHG)) {
- /* other psi fault */
-
- printk(KERN_WARNING "Voyager PSI status 0x%x\n", data);
- /* clear the PSI fault */
- outb(VOYAGER_CAT_RUN, CAT_CMD);
- cat_write(&psi, &psi_asic, VOYAGER_PSI_STATUS_REG, 0);
- outb(VOYAGER_CAT_END, CAT_CMD);
- }
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8 -*- */
-
-/* Copyright (C) 1999,2001
- *
- * Author: J.E.J.Bottomley@HansenPartnership.com
- *
- * This file provides all the same external entries as smp.c but uses
- * the voyager hal to provide the functionality
- */
-#include <linux/cpu.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/kernel_stat.h>
-#include <linux/delay.h>
-#include <linux/mc146818rtc.h>
-#include <linux/cache.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/bootmem.h>
-#include <linux/completion.h>
-#include <asm/desc.h>
-#include <asm/voyager.h>
-#include <asm/vic.h>
-#include <asm/mtrr.h>
-#include <asm/pgalloc.h>
-#include <asm/tlbflush.h>
-#include <asm/arch_hooks.h>
-#include <asm/trampoline.h>
-
-/* TLB state -- visible externally, indexed physically */
-DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate) = { &init_mm, 0 };
-
-/* CPU IRQ affinity -- set to all ones initially */
-static unsigned long cpu_irq_affinity[NR_CPUS] __cacheline_aligned =
- {[0 ... NR_CPUS-1] = ~0UL };
-
-/* per CPU data structure (for /proc/cpuinfo et al), visible externally
- * indexed physically */
-DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info);
-EXPORT_PER_CPU_SYMBOL(cpu_info);
-
-/* physical ID of the CPU used to boot the system */
-unsigned char boot_cpu_id;
-
-/* The memory line addresses for the Quad CPIs */
-struct voyager_qic_cpi *voyager_quad_cpi_addr[NR_CPUS] __cacheline_aligned;
-
-/* The masks for the Extended VIC processors, filled in by cat_init */
-__u32 voyager_extended_vic_processors = 0;
-
-/* Masks for the extended Quad processors which cannot be VIC booted */
-__u32 voyager_allowed_boot_processors = 0;
-
-/* The mask for the Quad Processors (both extended and non-extended) */
-__u32 voyager_quad_processors = 0;
-
-/* Total count of live CPUs, used in process.c to display
- * the CPU information and in irq.c for the per CPU irq
- * activity count. Finally exported by i386_ksyms.c */
-static int voyager_extended_cpus = 1;
-
-/* Used for the invalidate map that's also checked in the spinlock */
-static volatile unsigned long smp_invalidate_needed;
-
-/* Bitmask of CPUs present in the system - exported by i386_syms.c, used
- * by scheduler but indexed physically */
-cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
-
-/* The internal functions */
-static void send_CPI(__u32 cpuset, __u8 cpi);
-static void ack_CPI(__u8 cpi);
-static int ack_QIC_CPI(__u8 cpi);
-static void ack_special_QIC_CPI(__u8 cpi);
-static void ack_VIC_CPI(__u8 cpi);
-static void send_CPI_allbutself(__u8 cpi);
-static void mask_vic_irq(unsigned int irq);
-static void unmask_vic_irq(unsigned int irq);
-static unsigned int startup_vic_irq(unsigned int irq);
-static void enable_local_vic_irq(unsigned int irq);
-static void disable_local_vic_irq(unsigned int irq);
-static void before_handle_vic_irq(unsigned int irq);
-static void after_handle_vic_irq(unsigned int irq);
-static void set_vic_irq_affinity(unsigned int irq, const struct cpumask *mask);
-static void ack_vic_irq(unsigned int irq);
-static void vic_enable_cpi(void);
-static void do_boot_cpu(__u8 cpuid);
-static void do_quad_bootstrap(void);
-static void initialize_secondary(void);
-
-int hard_smp_processor_id(void);
-int safe_smp_processor_id(void);
-
-/* Inline functions */
-static inline void send_one_QIC_CPI(__u8 cpu, __u8 cpi)
-{
- voyager_quad_cpi_addr[cpu]->qic_cpi[cpi].cpi =
- (smp_processor_id() << 16) + cpi;
-}
-
-static inline void send_QIC_CPI(__u32 cpuset, __u8 cpi)
-{
- int cpu;
-
- for_each_online_cpu(cpu) {
- if (cpuset & (1 << cpu)) {
-#ifdef VOYAGER_DEBUG
- if (!cpu_online(cpu))
- VDEBUG(("CPU%d sending cpi %d to CPU%d not in "
- "cpu_online_map\n",
- hard_smp_processor_id(), cpi, cpu));
-#endif
- send_one_QIC_CPI(cpu, cpi - QIC_CPI_OFFSET);
- }
- }
-}
-
-static inline void wrapper_smp_local_timer_interrupt(void)
-{
- irq_enter();
- smp_local_timer_interrupt();
- irq_exit();
-}
-
-static inline void send_one_CPI(__u8 cpu, __u8 cpi)
-{
- if (voyager_quad_processors & (1 << cpu))
- send_one_QIC_CPI(cpu, cpi - QIC_CPI_OFFSET);
- else
- send_CPI(1 << cpu, cpi);
-}
-
-static inline void send_CPI_allbutself(__u8 cpi)
-{
- __u8 cpu = smp_processor_id();
- __u32 mask = cpus_addr(cpu_online_map)[0] & ~(1 << cpu);
- send_CPI(mask, cpi);
-}
-
-static inline int is_cpu_quad(void)
-{
- __u8 cpumask = inb(VIC_PROC_WHO_AM_I);
- return ((cpumask & QUAD_IDENTIFIER) == QUAD_IDENTIFIER);
-}
-
-static inline int is_cpu_extended(void)
-{
- __u8 cpu = hard_smp_processor_id();
-
- return (voyager_extended_vic_processors & (1 << cpu));
-}
-
-static inline int is_cpu_vic_boot(void)
-{
- __u8 cpu = hard_smp_processor_id();
-
- return (voyager_extended_vic_processors
- & voyager_allowed_boot_processors & (1 << cpu));
-}
-
-static inline void ack_CPI(__u8 cpi)
-{
- switch (cpi) {
- case VIC_CPU_BOOT_CPI:
- if (is_cpu_quad() && !is_cpu_vic_boot())
- ack_QIC_CPI(cpi);
- else
- ack_VIC_CPI(cpi);
- break;
- case VIC_SYS_INT:
- case VIC_CMN_INT:
- /* These are slightly strange. Even on the Quad card,
- * They are vectored as VIC CPIs */
- if (is_cpu_quad())
- ack_special_QIC_CPI(cpi);
- else
- ack_VIC_CPI(cpi);
- break;
- default:
- printk("VOYAGER ERROR: CPI%d is in common CPI code\n", cpi);
- break;
- }
-}
-
-/* local variables */
-
-/* The VIC IRQ descriptors -- these look almost identical to the
- * 8259 IRQs except that masks and things must be kept per processor
- */
-static struct irq_chip vic_chip = {
- .name = "VIC",
- .startup = startup_vic_irq,
- .mask = mask_vic_irq,
- .unmask = unmask_vic_irq,
- .set_affinity = set_vic_irq_affinity,
-};
-
-/* used to count up as CPUs are brought on line (starts at 0) */
-static int cpucount = 0;
-
-/* The per cpu profile stuff - used in smp_local_timer_interrupt */
-static DEFINE_PER_CPU(int, prof_multiplier) = 1;
-static DEFINE_PER_CPU(int, prof_old_multiplier) = 1;
-static DEFINE_PER_CPU(int, prof_counter) = 1;
-
-/* the map used to check if a CPU has booted */
-static __u32 cpu_booted_map;
-
-/* the synchronize flag used to hold all secondary CPUs spinning in
- * a tight loop until the boot sequence is ready for them */
-static cpumask_t smp_commenced_mask = CPU_MASK_NONE;
-
-/* This is for the new dynamic CPU boot code */
-
-/* The per processor IRQ masks (these are usually kept in sync) */
-static __u16 vic_irq_mask[NR_CPUS] __cacheline_aligned;
-
-/* the list of IRQs to be enabled by the VIC_ENABLE_IRQ_CPI */
-static __u16 vic_irq_enable_mask[NR_CPUS] __cacheline_aligned = { 0 };
-
-/* Lock for enable/disable of VIC interrupts */
-static __cacheline_aligned DEFINE_SPINLOCK(vic_irq_lock);
-
-/* The boot processor is correctly set up in PC mode when it
- * comes up, but the secondaries need their master/slave 8259
- * pairs initializing correctly */
-
-/* Interrupt counters (per cpu) and total - used to try to
- * even up the interrupt handling routines */
-static long vic_intr_total = 0;
-static long vic_intr_count[NR_CPUS] __cacheline_aligned = { 0 };
-static unsigned long vic_tick[NR_CPUS] __cacheline_aligned = { 0 };
-
-/* Since we can only use CPI0, we fake all the other CPIs */
-static unsigned long vic_cpi_mailbox[NR_CPUS] __cacheline_aligned;
-
-/* debugging routine to read the isr of the cpu's pic */
-static inline __u16 vic_read_isr(void)
-{
- __u16 isr;
-
- outb(0x0b, 0xa0);
- isr = inb(0xa0) << 8;
- outb(0x0b, 0x20);
- isr |= inb(0x20);
-
- return isr;
-}
-
-static __init void qic_setup(void)
-{
- if (!is_cpu_quad()) {
- /* not a quad, no setup */
- return;
- }
- outb(QIC_DEFAULT_MASK0, QIC_MASK_REGISTER0);
- outb(QIC_CPI_ENABLE, QIC_MASK_REGISTER1);
-
- if (is_cpu_extended()) {
- /* the QIC duplicate of the VIC base register */
- outb(VIC_DEFAULT_CPI_BASE, QIC_VIC_CPI_BASE_REGISTER);
- outb(QIC_DEFAULT_CPI_BASE, QIC_CPI_BASE_REGISTER);
-
- /* FIXME: should set up the QIC timer and memory parity
- * error vectors here */
- }
-}
-
-static __init void vic_setup_pic(void)
-{
- outb(1, VIC_REDIRECT_REGISTER_1);
- /* clear the claim registers for dynamic routing */
- outb(0, VIC_CLAIM_REGISTER_0);
- outb(0, VIC_CLAIM_REGISTER_1);
-
- outb(0, VIC_PRIORITY_REGISTER);
- /* Set the Primary and Secondary Microchannel vector
- * bases to be the same as the ordinary interrupts
- *
- * FIXME: This would be more efficient using separate
- * vectors. */
- outb(FIRST_EXTERNAL_VECTOR, VIC_PRIMARY_MC_BASE);
- outb(FIRST_EXTERNAL_VECTOR, VIC_SECONDARY_MC_BASE);
- /* Now initiallise the master PIC belonging to this CPU by
- * sending the four ICWs */
-
- /* ICW1: level triggered, ICW4 needed */
- outb(0x19, 0x20);
-
- /* ICW2: vector base */
- outb(FIRST_EXTERNAL_VECTOR, 0x21);
-
- /* ICW3: slave at line 2 */
- outb(0x04, 0x21);
-
- /* ICW4: 8086 mode */
- outb(0x01, 0x21);
-
- /* now the same for the slave PIC */
-
- /* ICW1: level trigger, ICW4 needed */
- outb(0x19, 0xA0);
-
- /* ICW2: slave vector base */
- outb(FIRST_EXTERNAL_VECTOR + 8, 0xA1);
-
- /* ICW3: slave ID */
- outb(0x02, 0xA1);
-
- /* ICW4: 8086 mode */
- outb(0x01, 0xA1);
-}
-
-static void do_quad_bootstrap(void)
-{
- if (is_cpu_quad() && is_cpu_vic_boot()) {
- int i;
- unsigned long flags;
- __u8 cpuid = hard_smp_processor_id();
-
- local_irq_save(flags);
-
- for (i = 0; i < 4; i++) {
- /* FIXME: this would be >>3 &0x7 on the 32 way */
- if (((cpuid >> 2) & 0x03) == i)
- /* don't lower our own mask! */
- continue;
-
- /* masquerade as local Quad CPU */
- outb(QIC_CPUID_ENABLE | i, QIC_PROCESSOR_ID);
- /* enable the startup CPI */
- outb(QIC_BOOT_CPI_MASK, QIC_MASK_REGISTER1);
- /* restore cpu id */
- outb(0, QIC_PROCESSOR_ID);
- }
- local_irq_restore(flags);
- }
-}
-
-void prefill_possible_map(void)
-{
- /* This is empty on voyager because we need a much
- * earlier detection which is done in find_smp_config */
-}
-
-/* Set up all the basic stuff: read the SMP config and make all the
- * SMP information reflect only the boot cpu. All others will be
- * brought on-line later. */
-void __init find_smp_config(void)
-{
- int i;
-
- boot_cpu_id = hard_smp_processor_id();
-
- printk("VOYAGER SMP: Boot cpu is %d\n", boot_cpu_id);
-
- /* initialize the CPU structures (moved from smp_boot_cpus) */
- for (i = 0; i < nr_cpu_ids; i++)
- cpu_irq_affinity[i] = ~0;
- cpu_online_map = cpumask_of_cpu(boot_cpu_id);
-
- /* The boot CPU must be extended */
- voyager_extended_vic_processors = 1 << boot_cpu_id;
- /* initially, all of the first 8 CPUs can boot */
- voyager_allowed_boot_processors = 0xff;
- /* set up everything for just this CPU, we can alter
- * this as we start the other CPUs later */
- /* now get the CPU disposition from the extended CMOS */
- cpus_addr(phys_cpu_present_map)[0] =
- voyager_extended_cmos_read(VOYAGER_PROCESSOR_PRESENT_MASK);
- cpus_addr(phys_cpu_present_map)[0] |=
- voyager_extended_cmos_read(VOYAGER_PROCESSOR_PRESENT_MASK + 1) << 8;
- cpus_addr(phys_cpu_present_map)[0] |=
- voyager_extended_cmos_read(VOYAGER_PROCESSOR_PRESENT_MASK +
- 2) << 16;
- cpus_addr(phys_cpu_present_map)[0] |=
- voyager_extended_cmos_read(VOYAGER_PROCESSOR_PRESENT_MASK +
- 3) << 24;
- init_cpu_possible(&phys_cpu_present_map);
- printk("VOYAGER SMP: phys_cpu_present_map = 0x%lx\n",
- cpus_addr(phys_cpu_present_map)[0]);
- /* Here we set up the VIC to enable SMP */
- /* enable the CPIs by writing the base vector to their register */
- outb(VIC_DEFAULT_CPI_BASE, VIC_CPI_BASE_REGISTER);
- outb(1, VIC_REDIRECT_REGISTER_1);
- /* set the claim registers for static routing --- Boot CPU gets
- * all interrupts untill all other CPUs started */
- outb(0xff, VIC_CLAIM_REGISTER_0);
- outb(0xff, VIC_CLAIM_REGISTER_1);
- /* Set the Primary and Secondary Microchannel vector
- * bases to be the same as the ordinary interrupts
- *
- * FIXME: This would be more efficient using separate
- * vectors. */
- outb(FIRST_EXTERNAL_VECTOR, VIC_PRIMARY_MC_BASE);
- outb(FIRST_EXTERNAL_VECTOR, VIC_SECONDARY_MC_BASE);
-
- /* Finally tell the firmware that we're driving */
- outb(inb(VOYAGER_SUS_IN_CONTROL_PORT) | VOYAGER_IN_CONTROL_FLAG,
- VOYAGER_SUS_IN_CONTROL_PORT);
-
- current_thread_info()->cpu = boot_cpu_id;
- percpu_write(cpu_number, boot_cpu_id);
-}
-
-/*
- * The bootstrap kernel entry code has set these up. Save them
- * for a given CPU, id is physical */
-void __init smp_store_cpu_info(int id)
-{
- struct cpuinfo_x86 *c = &cpu_data(id);
-
- *c = boot_cpu_data;
- c->cpu_index = id;
-
- identify_secondary_cpu(c);
-}
-
-/* Routine initially called when a non-boot CPU is brought online */
-static void __init start_secondary(void *unused)
-{
- __u8 cpuid = hard_smp_processor_id();
-
- cpu_init();
-
- /* OK, we're in the routine */
- ack_CPI(VIC_CPU_BOOT_CPI);
-
- /* setup the 8259 master slave pair belonging to this CPU ---
- * we won't actually receive any until the boot CPU
- * relinquishes it's static routing mask */
- vic_setup_pic();
-
- qic_setup();
-
- if (is_cpu_quad() && !is_cpu_vic_boot()) {
- /* clear the boot CPI */
- __u8 dummy;
-
- dummy =
- voyager_quad_cpi_addr[cpuid]->qic_cpi[VIC_CPU_BOOT_CPI].cpi;
- printk("read dummy %d\n", dummy);
- }
-
- /* lower the mask to receive CPIs */
- vic_enable_cpi();
-
- VDEBUG(("VOYAGER SMP: CPU%d, stack at about %p\n", cpuid, &cpuid));
-
- notify_cpu_starting(cpuid);
-
- /* enable interrupts */
- local_irq_enable();
-
- /* get our bogomips */
- calibrate_delay();
-
- /* save our processor parameters */
- smp_store_cpu_info(cpuid);
-
- /* if we're a quad, we may need to bootstrap other CPUs */
- do_quad_bootstrap();
-
- /* FIXME: this is rather a poor hack to prevent the CPU
- * activating softirqs while it's supposed to be waiting for
- * permission to proceed. Without this, the new per CPU stuff
- * in the softirqs will fail */
- local_irq_disable();
- cpu_set(cpuid, cpu_callin_map);
-
- /* signal that we're done */
- cpu_booted_map = 1;
-
- while (!cpu_isset(cpuid, smp_commenced_mask))
- rep_nop();
- local_irq_enable();
-
- local_flush_tlb();
-
- cpu_set(cpuid, cpu_online_map);
- wmb();
- cpu_idle();
-}
-
-/* Routine to kick start the given CPU and wait for it to report ready
- * (or timeout in startup). When this routine returns, the requested
- * CPU is either fully running and configured or known to be dead.
- *
- * We call this routine sequentially 1 CPU at a time, so no need for
- * locking */
-
-static void __init do_boot_cpu(__u8 cpu)
-{
- struct task_struct *idle;
- int timeout;
- unsigned long flags;
- int quad_boot = (1 << cpu) & voyager_quad_processors
- & ~(voyager_extended_vic_processors
- & voyager_allowed_boot_processors);
-
- /* This is the format of the CPI IDT gate (in real mode) which
- * we're hijacking to boot the CPU */
- union IDTFormat {
- struct seg {
- __u16 Offset;
- __u16 Segment;
- } idt;
- __u32 val;
- } hijack_source;
-
- __u32 *hijack_vector;
- __u32 start_phys_address = setup_trampoline();
-
- /* There's a clever trick to this: The linux trampoline is
- * compiled to begin at absolute location zero, so make the
- * address zero but have the data segment selector compensate
- * for the actual address */
- hijack_source.idt.Offset = start_phys_address & 0x000F;
- hijack_source.idt.Segment = (start_phys_address >> 4) & 0xFFFF;
-
- cpucount++;
- alternatives_smp_switch(1);
-
- idle = fork_idle(cpu);
- if (IS_ERR(idle))
- panic("failed fork for CPU%d", cpu);
- idle->thread.ip = (unsigned long)start_secondary;
- /* init_tasks (in sched.c) is indexed logically */
- stack_start.sp = (void *)idle->thread.sp;
-
- per_cpu(current_task, cpu) = idle;
- early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
- irq_ctx_init(cpu);
-
- /* Note: Don't modify initial ss override */
- VDEBUG(("VOYAGER SMP: Booting CPU%d at 0x%lx[%x:%x], stack %p\n", cpu,
- (unsigned long)hijack_source.val, hijack_source.idt.Segment,
- hijack_source.idt.Offset, stack_start.sp));
-
- /* init lowmem identity mapping */
- clone_pgd_range(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY,
- min_t(unsigned long, KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY));
- flush_tlb_all();
-
- if (quad_boot) {
- printk("CPU %d: non extended Quad boot\n", cpu);
- hijack_vector =
- (__u32 *)
- phys_to_virt((VIC_CPU_BOOT_CPI + QIC_DEFAULT_CPI_BASE) * 4);
- *hijack_vector = hijack_source.val;
- } else {
- printk("CPU%d: extended VIC boot\n", cpu);
- hijack_vector =
- (__u32 *)
- phys_to_virt((VIC_CPU_BOOT_CPI + VIC_DEFAULT_CPI_BASE) * 4);
- *hijack_vector = hijack_source.val;
- /* VIC errata, may also receive interrupt at this address */
- hijack_vector =
- (__u32 *)
- phys_to_virt((VIC_CPU_BOOT_ERRATA_CPI +
- VIC_DEFAULT_CPI_BASE) * 4);
- *hijack_vector = hijack_source.val;
- }
- /* All non-boot CPUs start with interrupts fully masked. Need
- * to lower the mask of the CPI we're about to send. We do
- * this in the VIC by masquerading as the processor we're
- * about to boot and lowering its interrupt mask */
- local_irq_save(flags);
- if (quad_boot) {
- send_one_QIC_CPI(cpu, VIC_CPU_BOOT_CPI);
- } else {
- outb(VIC_CPU_MASQUERADE_ENABLE | cpu, VIC_PROCESSOR_ID);
- /* here we're altering registers belonging to `cpu' */
-
- outb(VIC_BOOT_INTERRUPT_MASK, 0x21);
- /* now go back to our original identity */
- outb(boot_cpu_id, VIC_PROCESSOR_ID);
-
- /* and boot the CPU */
-
- send_CPI((1 << cpu), VIC_CPU_BOOT_CPI);
- }
- cpu_booted_map = 0;
- local_irq_restore(flags);
-
- /* now wait for it to become ready (or timeout) */
- for (timeout = 0; timeout < 50000; timeout++) {
- if (cpu_booted_map)
- break;
- udelay(100);
- }
- /* reset the page table */
- zap_low_mappings();
-
- if (cpu_booted_map) {
- VDEBUG(("CPU%d: Booted successfully, back in CPU %d\n",
- cpu, smp_processor_id()));
-
- printk("CPU%d: ", cpu);
- print_cpu_info(&cpu_data(cpu));
- wmb();
- cpu_set(cpu, cpu_callout_map);
- cpu_set(cpu, cpu_present_map);
- } else {
- printk("CPU%d FAILED TO BOOT: ", cpu);
- if (*
- ((volatile unsigned char *)phys_to_virt(start_phys_address))
- == 0xA5)
- printk("Stuck.\n");
- else
- printk("Not responding.\n");
-
- cpucount--;
- }
-}
-
-void __init smp_boot_cpus(void)
-{
- int i;
-
- /* CAT BUS initialisation must be done after the memory */
- /* FIXME: The L4 has a catbus too, it just needs to be
- * accessed in a totally different way */
- if (voyager_level == 5) {
- voyager_cat_init();
-
- /* now that the cat has probed the Voyager System Bus, sanity
- * check the cpu map */
- if (((voyager_quad_processors | voyager_extended_vic_processors)
- & cpus_addr(phys_cpu_present_map)[0]) !=
- cpus_addr(phys_cpu_present_map)[0]) {
- /* should panic */
- printk("\n\n***WARNING*** "
- "Sanity check of CPU present map FAILED\n");
- }
- } else if (voyager_level == 4)
- voyager_extended_vic_processors =
- cpus_addr(phys_cpu_present_map)[0];
-
- /* this sets up the idle task to run on the current cpu */
- voyager_extended_cpus = 1;
- /* Remove the global_irq_holder setting, it triggers a BUG() on
- * schedule at the moment */
- //global_irq_holder = boot_cpu_id;
-
- /* FIXME: Need to do something about this but currently only works
- * on CPUs with a tsc which none of mine have.
- smp_tune_scheduling();
- */
- smp_store_cpu_info(boot_cpu_id);
- /* setup the jump vector */
- initial_code = (unsigned long)initialize_secondary;
- printk("CPU%d: ", boot_cpu_id);
- print_cpu_info(&cpu_data(boot_cpu_id));
-
- if (is_cpu_quad()) {
- /* booting on a Quad CPU */
- printk("VOYAGER SMP: Boot CPU is Quad\n");
- qic_setup();
- do_quad_bootstrap();
- }
-
- /* enable our own CPIs */
- vic_enable_cpi();
-
- cpu_set(boot_cpu_id, cpu_online_map);
- cpu_set(boot_cpu_id, cpu_callout_map);
-
- /* loop over all the extended VIC CPUs and boot them. The
- * Quad CPUs must be bootstrapped by their extended VIC cpu */
- for (i = 0; i < nr_cpu_ids; i++) {
- if (i == boot_cpu_id || !cpu_isset(i, phys_cpu_present_map))
- continue;
- do_boot_cpu(i);
- /* This udelay seems to be needed for the Quad boots
- * don't remove unless you know what you're doing */
- udelay(1000);
- }
- /* we could compute the total bogomips here, but why bother?,
- * Code added from smpboot.c */
- {
- unsigned long bogosum = 0;
-
- for_each_online_cpu(i)
- bogosum += cpu_data(i).loops_per_jiffy;
- printk(KERN_INFO "Total of %d processors activated "
- "(%lu.%02lu BogoMIPS).\n",
- cpucount + 1, bogosum / (500000 / HZ),
- (bogosum / (5000 / HZ)) % 100);
- }
- voyager_extended_cpus = hweight32(voyager_extended_vic_processors);
- printk("VOYAGER: Extended (interrupt handling CPUs): "
- "%d, non-extended: %d\n", voyager_extended_cpus,
- num_booting_cpus() - voyager_extended_cpus);
- /* that's it, switch to symmetric mode */
- outb(0, VIC_PRIORITY_REGISTER);
- outb(0, VIC_CLAIM_REGISTER_0);
- outb(0, VIC_CLAIM_REGISTER_1);
-
- VDEBUG(("VOYAGER SMP: Booted with %d CPUs\n", num_booting_cpus()));
-}
-
-/* Reload the secondary CPUs task structure (this function does not
- * return ) */
-static void __init initialize_secondary(void)
-{
-#if 0
- // AC kernels only
- set_current(hard_get_current());
-#endif
-
- /*
- * We don't actually need to load the full TSS,
- * basically just the stack pointer and the eip.
- */
-
- asm volatile ("movl %0,%%esp\n\t"
- "jmp *%1"::"r" (current->thread.sp),
- "r"(current->thread.ip));
-}
-
-/* handle a Voyager SYS_INT -- If we don't, the base board will
- * panic the system.
- *
- * System interrupts occur because some problem was detected on the
- * various busses. To find out what you have to probe all the
- * hardware via the CAT bus. FIXME: At the moment we do nothing. */
-void smp_vic_sys_interrupt(struct pt_regs *regs)
-{
- ack_CPI(VIC_SYS_INT);
- printk("Voyager SYSTEM INTERRUPT\n");
-}
-
-/* Handle a voyager CMN_INT; These interrupts occur either because of
- * a system status change or because a single bit memory error
- * occurred. FIXME: At the moment, ignore all this. */
-void smp_vic_cmn_interrupt(struct pt_regs *regs)
-{
- static __u8 in_cmn_int = 0;
- static DEFINE_SPINLOCK(cmn_int_lock);
-
- /* common ints are broadcast, so make sure we only do this once */
- _raw_spin_lock(&cmn_int_lock);
- if (in_cmn_int)
- goto unlock_end;
-
- in_cmn_int++;
- _raw_spin_unlock(&cmn_int_lock);
-
- VDEBUG(("Voyager COMMON INTERRUPT\n"));
-
- if (voyager_level == 5)
- voyager_cat_do_common_interrupt();
-
- _raw_spin_lock(&cmn_int_lock);
- in_cmn_int = 0;
- unlock_end:
- _raw_spin_unlock(&cmn_int_lock);
- ack_CPI(VIC_CMN_INT);
-}
-
-/*
- * Reschedule call back. Nothing to do, all the work is done
- * automatically when we return from the interrupt. */
-static void smp_reschedule_interrupt(void)
-{
- /* do nothing */
-}
-
-static struct mm_struct *flush_mm;
-static unsigned long flush_va;
-static DEFINE_SPINLOCK(tlbstate_lock);
-
-/*
- * We cannot call mmdrop() because we are in interrupt context,
- * instead update mm->cpu_vm_mask.
- *
- * We need to reload %cr3 since the page tables may be going
- * away from under us..
- */
-static inline void voyager_leave_mm(unsigned long cpu)
-{
- if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK)
- BUG();
- cpu_clear(cpu, per_cpu(cpu_tlbstate, cpu).active_mm->cpu_vm_mask);
- load_cr3(swapper_pg_dir);
-}
-
-/*
- * Invalidate call-back
- */
-static void smp_invalidate_interrupt(void)
-{
- __u8 cpu = smp_processor_id();
-
- if (!test_bit(cpu, &smp_invalidate_needed))
- return;
- /* This will flood messages. Don't uncomment unless you see
- * Problems with cross cpu invalidation
- VDEBUG(("VOYAGER SMP: CPU%d received INVALIDATE_CPI\n",
- smp_processor_id()));
- */
-
- if (flush_mm == per_cpu(cpu_tlbstate, cpu).active_mm) {
- if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK) {
- if (flush_va == TLB_FLUSH_ALL)
- local_flush_tlb();
- else
- __flush_tlb_one(flush_va);
- } else
- voyager_leave_mm(cpu);
- }
- smp_mb__before_clear_bit();
- clear_bit(cpu, &smp_invalidate_needed);
- smp_mb__after_clear_bit();
-}
-
-/* All the new flush operations for 2.4 */
-
-/* This routine is called with a physical cpu mask */
-static void
-voyager_flush_tlb_others(unsigned long cpumask, struct mm_struct *mm,
- unsigned long va)
-{
- int stuck = 50000;
-
- if (!cpumask)
- BUG();
- if ((cpumask & cpus_addr(cpu_online_map)[0]) != cpumask)
- BUG();
- if (cpumask & (1 << smp_processor_id()))
- BUG();
- if (!mm)
- BUG();
-
- spin_lock(&tlbstate_lock);
-
- flush_mm = mm;
- flush_va = va;
- atomic_set_mask(cpumask, &smp_invalidate_needed);
- /*
- * We have to send the CPI only to
- * CPUs affected.
- */
- send_CPI(cpumask, VIC_INVALIDATE_CPI);
-
- while (smp_invalidate_needed) {
- mb();
- if (--stuck == 0) {
- printk("***WARNING*** Stuck doing invalidate CPI "
- "(CPU%d)\n", smp_processor_id());
- break;
- }
- }
-
- /* Uncomment only to debug invalidation problems
- VDEBUG(("VOYAGER SMP: Completed invalidate CPI (CPU%d)\n", cpu));
- */
-
- flush_mm = NULL;
- flush_va = 0;
- spin_unlock(&tlbstate_lock);
-}
-
-void flush_tlb_current_task(void)
-{
- struct mm_struct *mm = current->mm;
- unsigned long cpu_mask;
-
- preempt_disable();
-
- cpu_mask = cpus_addr(mm->cpu_vm_mask)[0] & ~(1 << smp_processor_id());
- local_flush_tlb();
- if (cpu_mask)
- voyager_flush_tlb_others(cpu_mask, mm, TLB_FLUSH_ALL);
-
- preempt_enable();
-}
-
-void flush_tlb_mm(struct mm_struct *mm)
-{
- unsigned long cpu_mask;
-
- preempt_disable();
-
- cpu_mask = cpus_addr(mm->cpu_vm_mask)[0] & ~(1 << smp_processor_id());
-
- if (current->active_mm == mm) {
- if (current->mm)
- local_flush_tlb();
- else
- voyager_leave_mm(smp_processor_id());
- }
- if (cpu_mask)
- voyager_flush_tlb_others(cpu_mask, mm, TLB_FLUSH_ALL);
-
- preempt_enable();
-}
-
-void flush_tlb_page(struct vm_area_struct *vma, unsigned long va)
-{
- struct mm_struct *mm = vma->vm_mm;
- unsigned long cpu_mask;
-
- preempt_disable();
-
- cpu_mask = cpus_addr(mm->cpu_vm_mask)[0] & ~(1 << smp_processor_id());
- if (current->active_mm == mm) {
- if (current->mm)
- __flush_tlb_one(va);
- else
- voyager_leave_mm(smp_processor_id());
- }
-
- if (cpu_mask)
- voyager_flush_tlb_others(cpu_mask, mm, va);
-
- preempt_enable();
-}
-
-EXPORT_SYMBOL(flush_tlb_page);
-
-/* enable the requested IRQs */
-static void smp_enable_irq_interrupt(void)
-{
- __u8 irq;
- __u8 cpu = get_cpu();
-
- VDEBUG(("VOYAGER SMP: CPU%d enabling irq mask 0x%x\n", cpu,
- vic_irq_enable_mask[cpu]));
-
- spin_lock(&vic_irq_lock);
- for (irq = 0; irq < 16; irq++) {
- if (vic_irq_enable_mask[cpu] & (1 << irq))
- enable_local_vic_irq(irq);
- }
- vic_irq_enable_mask[cpu] = 0;
- spin_unlock(&vic_irq_lock);
-
- put_cpu_no_resched();
-}
-
-/*
- * CPU halt call-back
- */
-static void smp_stop_cpu_function(void *dummy)
-{
- VDEBUG(("VOYAGER SMP: CPU%d is STOPPING\n", smp_processor_id()));
- cpu_clear(smp_processor_id(), cpu_online_map);
- local_irq_disable();
- for (;;)
- halt();
-}
-
-/* execute a thread on a new CPU. The function to be called must be
- * previously set up. This is used to schedule a function for
- * execution on all CPUs - set up the function then broadcast a
- * function_interrupt CPI to come here on each CPU */
-static void smp_call_function_interrupt(void)
-{
- irq_enter();
- generic_smp_call_function_interrupt();
- __get_cpu_var(irq_stat).irq_call_count++;
- irq_exit();
-}
-
-static void smp_call_function_single_interrupt(void)
-{
- irq_enter();
- generic_smp_call_function_single_interrupt();
- __get_cpu_var(irq_stat).irq_call_count++;
- irq_exit();
-}
-
-/* Sorry about the name. In an APIC based system, the APICs
- * themselves are programmed to send a timer interrupt. This is used
- * by linux to reschedule the processor. Voyager doesn't have this,
- * so we use the system clock to interrupt one processor, which in
- * turn, broadcasts a timer CPI to all the others --- we receive that
- * CPI here. We don't use this actually for counting so losing
- * ticks doesn't matter
- *
- * FIXME: For those CPUs which actually have a local APIC, we could
- * try to use it to trigger this interrupt instead of having to
- * broadcast the timer tick. Unfortunately, all my pentium DYADs have
- * no local APIC, so I can't do this
- *
- * This function is currently a placeholder and is unused in the code */
-void smp_apic_timer_interrupt(struct pt_regs *regs)
-{
- struct pt_regs *old_regs = set_irq_regs(regs);
- wrapper_smp_local_timer_interrupt();
- set_irq_regs(old_regs);
-}
-
-/* All of the QUAD interrupt GATES */
-void smp_qic_timer_interrupt(struct pt_regs *regs)
-{
- struct pt_regs *old_regs = set_irq_regs(regs);
- ack_QIC_CPI(QIC_TIMER_CPI);
- wrapper_smp_local_timer_interrupt();
- set_irq_regs(old_regs);
-}
-
-void smp_qic_invalidate_interrupt(struct pt_regs *regs)
-{
- ack_QIC_CPI(QIC_INVALIDATE_CPI);
- smp_invalidate_interrupt();
-}
-
-void smp_qic_reschedule_interrupt(struct pt_regs *regs)
-{
- ack_QIC_CPI(QIC_RESCHEDULE_CPI);
- smp_reschedule_interrupt();
-}
-
-void smp_qic_enable_irq_interrupt(struct pt_regs *regs)
-{
- ack_QIC_CPI(QIC_ENABLE_IRQ_CPI);
- smp_enable_irq_interrupt();
-}
-
-void smp_qic_call_function_interrupt(struct pt_regs *regs)
-{
- ack_QIC_CPI(QIC_CALL_FUNCTION_CPI);
- smp_call_function_interrupt();
-}
-
-void smp_qic_call_function_single_interrupt(struct pt_regs *regs)
-{
- ack_QIC_CPI(QIC_CALL_FUNCTION_SINGLE_CPI);
- smp_call_function_single_interrupt();
-}
-
-void smp_vic_cpi_interrupt(struct pt_regs *regs)
-{
- struct pt_regs *old_regs = set_irq_regs(regs);
- __u8 cpu = smp_processor_id();
-
- if (is_cpu_quad())
- ack_QIC_CPI(VIC_CPI_LEVEL0);
- else
- ack_VIC_CPI(VIC_CPI_LEVEL0);
-
- if (test_and_clear_bit(VIC_TIMER_CPI, &vic_cpi_mailbox[cpu]))
- wrapper_smp_local_timer_interrupt();
- if (test_and_clear_bit(VIC_INVALIDATE_CPI, &vic_cpi_mailbox[cpu]))
- smp_invalidate_interrupt();
- if (test_and_clear_bit(VIC_RESCHEDULE_CPI, &vic_cpi_mailbox[cpu]))
- smp_reschedule_interrupt();
- if (test_and_clear_bit(VIC_ENABLE_IRQ_CPI, &vic_cpi_mailbox[cpu]))
- smp_enable_irq_interrupt();
- if (test_and_clear_bit(VIC_CALL_FUNCTION_CPI, &vic_cpi_mailbox[cpu]))
- smp_call_function_interrupt();
- if (test_and_clear_bit(VIC_CALL_FUNCTION_SINGLE_CPI, &vic_cpi_mailbox[cpu]))
- smp_call_function_single_interrupt();
- set_irq_regs(old_regs);
-}
-
-static void do_flush_tlb_all(void *info)
-{
- unsigned long cpu = smp_processor_id();
-
- __flush_tlb_all();
- if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_LAZY)
- voyager_leave_mm(cpu);
-}
-
-/* flush the TLB of every active CPU in the system */
-void flush_tlb_all(void)
-{
- on_each_cpu(do_flush_tlb_all, 0, 1);
-}
-
-/* send a reschedule CPI to one CPU by physical CPU number*/
-static void voyager_smp_send_reschedule(int cpu)
-{
- send_one_CPI(cpu, VIC_RESCHEDULE_CPI);
-}
-
-int hard_smp_processor_id(void)
-{
- __u8 i;
- __u8 cpumask = inb(VIC_PROC_WHO_AM_I);
- if ((cpumask & QUAD_IDENTIFIER) == QUAD_IDENTIFIER)
- return cpumask & 0x1F;
-
- for (i = 0; i < 8; i++) {
- if (cpumask & (1 << i))
- return i;
- }
- printk("** WARNING ** Illegal cpuid returned by VIC: %d", cpumask);
- return 0;
-}
-
-int safe_smp_processor_id(void)
-{
- return hard_smp_processor_id();
-}
-
-/* broadcast a halt to all other CPUs */
-static void voyager_smp_send_stop(void)
-{
- smp_call_function(smp_stop_cpu_function, NULL, 1);
-}
-
-/* this function is triggered in time.c when a clock tick fires
- * we need to re-broadcast the tick to all CPUs */
-void smp_vic_timer_interrupt(void)
-{
- send_CPI_allbutself(VIC_TIMER_CPI);
- smp_local_timer_interrupt();
-}
-
-/* local (per CPU) timer interrupt. It does both profiling and
- * process statistics/rescheduling.
- *
- * We do profiling in every local tick, statistics/rescheduling
- * happen only every 'profiling multiplier' ticks. The default
- * multiplier is 1 and it can be changed by writing the new multiplier
- * value into /proc/profile.
- */
-void smp_local_timer_interrupt(void)
-{
- int cpu = smp_processor_id();
- long weight;
-
- profile_tick(CPU_PROFILING);
- if (--per_cpu(prof_counter, cpu) <= 0) {
- /*
- * The multiplier may have changed since the last time we got
- * to this point as a result of the user writing to
- * /proc/profile. In this case we need to adjust the APIC
- * timer accordingly.
- *
- * Interrupts are already masked off at this point.
- */
- per_cpu(prof_counter, cpu) = per_cpu(prof_multiplier, cpu);
- if (per_cpu(prof_counter, cpu) !=
- per_cpu(prof_old_multiplier, cpu)) {
- /* FIXME: need to update the vic timer tick here */
- per_cpu(prof_old_multiplier, cpu) =
- per_cpu(prof_counter, cpu);
- }
-
- update_process_times(user_mode_vm(get_irq_regs()));
- }
-
- if (((1 << cpu) & voyager_extended_vic_processors) == 0)
- /* only extended VIC processors participate in
- * interrupt distribution */
- return;
-
- /*
- * We take the 'long' return path, and there every subsystem
- * grabs the appropriate locks (kernel lock/ irq lock).
- *
- * we might want to decouple profiling from the 'long path',
- * and do the profiling totally in assembly.
- *
- * Currently this isn't too much of an issue (performance wise),
- * we can take more than 100K local irqs per second on a 100 MHz P5.
- */
-
- if ((++vic_tick[cpu] & 0x7) != 0)
- return;
- /* get here every 16 ticks (about every 1/6 of a second) */
-
- /* Change our priority to give someone else a chance at getting
- * the IRQ. The algorithm goes like this:
- *
- * In the VIC, the dynamically routed interrupt is always
- * handled by the lowest priority eligible (i.e. receiving
- * interrupts) CPU. If >1 eligible CPUs are equal lowest, the
- * lowest processor number gets it.
- *
- * The priority of a CPU is controlled by a special per-CPU
- * VIC priority register which is 3 bits wide 0 being lowest
- * and 7 highest priority..
- *
- * Therefore we subtract the average number of interrupts from
- * the number we've fielded. If this number is negative, we
- * lower the activity count and if it is positive, we raise
- * it.
- *
- * I'm afraid this still leads to odd looking interrupt counts:
- * the totals are all roughly equal, but the individual ones
- * look rather skewed.
- *
- * FIXME: This algorithm is total crap when mixed with SMP
- * affinity code since we now try to even up the interrupt
- * counts when an affinity binding is keeping them on a
- * particular CPU*/
- weight = (vic_intr_count[cpu] * voyager_extended_cpus
- - vic_intr_total) >> 4;
- weight += 4;
- if (weight > 7)
- weight = 7;
- if (weight < 0)
- weight = 0;
-
- outb((__u8) weight, VIC_PRIORITY_REGISTER);
-
-#ifdef VOYAGER_DEBUG
- if ((vic_tick[cpu] & 0xFFF) == 0) {
- /* print this message roughly every 25 secs */
- printk("VOYAGER SMP: vic_tick[%d] = %lu, weight = %ld\n",
- cpu, vic_tick[cpu], weight);
- }
-#endif
-}
-
-/* setup the profiling timer */
-int setup_profiling_timer(unsigned int multiplier)
-{
- int i;
-
- if ((!multiplier))
- return -EINVAL;
-
- /*
- * Set the new multiplier for each CPU. CPUs don't start using the
- * new values until the next timer interrupt in which they do process
- * accounting.
- */
- for (i = 0; i < nr_cpu_ids; ++i)
- per_cpu(prof_multiplier, i) = multiplier;
-
- return 0;
-}
-
-/* This is a bit of a mess, but forced on us by the genirq changes
- * there's no genirq handler that really does what voyager wants
- * so hack it up with the simple IRQ handler */
-static void handle_vic_irq(unsigned int irq, struct irq_desc *desc)
-{
- before_handle_vic_irq(irq);
- handle_simple_irq(irq, desc);
- after_handle_vic_irq(irq);
-}
-
-/* The CPIs are handled in the per cpu 8259s, so they must be
- * enabled to be received: FIX: enabling the CPIs in the early
- * boot sequence interferes with bug checking; enable them later
- * on in smp_init */
-#define VIC_SET_GATE(cpi, vector) \
- set_intr_gate((cpi) + VIC_DEFAULT_CPI_BASE, (vector))
-#define QIC_SET_GATE(cpi, vector) \
- set_intr_gate((cpi) + QIC_DEFAULT_CPI_BASE, (vector))
-
-void __init voyager_smp_intr_init(void)
-{
- int i;
-
- /* initialize the per cpu irq mask to all disabled */
- for (i = 0; i < nr_cpu_ids; i++)
- vic_irq_mask[i] = 0xFFFF;
-
- VIC_SET_GATE(VIC_CPI_LEVEL0, vic_cpi_interrupt);
-
- VIC_SET_GATE(VIC_SYS_INT, vic_sys_interrupt);
- VIC_SET_GATE(VIC_CMN_INT, vic_cmn_interrupt);
-
- QIC_SET_GATE(QIC_TIMER_CPI, qic_timer_interrupt);
- QIC_SET_GATE(QIC_INVALIDATE_CPI, qic_invalidate_interrupt);
- QIC_SET_GATE(QIC_RESCHEDULE_CPI, qic_reschedule_interrupt);
- QIC_SET_GATE(QIC_ENABLE_IRQ_CPI, qic_enable_irq_interrupt);
- QIC_SET_GATE(QIC_CALL_FUNCTION_CPI, qic_call_function_interrupt);
-
- /* now put the VIC descriptor into the first 48 IRQs
- *
- * This is for later: first 16 correspond to PC IRQs; next 16
- * are Primary MC IRQs and final 16 are Secondary MC IRQs */
- for (i = 0; i < 48; i++)
- set_irq_chip_and_handler(i, &vic_chip, handle_vic_irq);
-}
-
-/* send a CPI at level cpi to a set of cpus in cpuset (set 1 bit per
- * processor to receive CPI */
-static void send_CPI(__u32 cpuset, __u8 cpi)
-{
- int cpu;
- __u32 quad_cpuset = (cpuset & voyager_quad_processors);
-
- if (cpi < VIC_START_FAKE_CPI) {
- /* fake CPI are only used for booting, so send to the
- * extended quads as well---Quads must be VIC booted */
- outb((__u8) (cpuset), VIC_CPI_Registers[cpi]);
- return;
- }
- if (quad_cpuset)
- send_QIC_CPI(quad_cpuset, cpi);
- cpuset &= ~quad_cpuset;
- cpuset &= 0xff; /* only first 8 CPUs vaild for VIC CPI */
- if (cpuset == 0)
- return;
- for_each_online_cpu(cpu) {
- if (cpuset & (1 << cpu))
- set_bit(cpi, &vic_cpi_mailbox[cpu]);
- }
- if (cpuset)
- outb((__u8) cpuset, VIC_CPI_Registers[VIC_CPI_LEVEL0]);
-}
-
-/* Acknowledge receipt of CPI in the QIC, clear in QIC hardware and
- * set the cache line to shared by reading it.
- *
- * DON'T make this inline otherwise the cache line read will be
- * optimised away
- * */
-static int ack_QIC_CPI(__u8 cpi)
-{
- __u8 cpu = hard_smp_processor_id();
-
- cpi &= 7;
-
- outb(1 << cpi, QIC_INTERRUPT_CLEAR1);
- return voyager_quad_cpi_addr[cpu]->qic_cpi[cpi].cpi;
-}
-
-static void ack_special_QIC_CPI(__u8 cpi)
-{
- switch (cpi) {
- case VIC_CMN_INT:
- outb(QIC_CMN_INT, QIC_INTERRUPT_CLEAR0);
- break;
- case VIC_SYS_INT:
- outb(QIC_SYS_INT, QIC_INTERRUPT_CLEAR0);
- break;
- }
- /* also clear at the VIC, just in case (nop for non-extended proc) */
- ack_VIC_CPI(cpi);
-}
-
-/* Acknowledge receipt of CPI in the VIC (essentially an EOI) */
-static void ack_VIC_CPI(__u8 cpi)
-{
-#ifdef VOYAGER_DEBUG
- unsigned long flags;
- __u16 isr;
- __u8 cpu = smp_processor_id();
-
- local_irq_save(flags);
- isr = vic_read_isr();
- if ((isr & (1 << (cpi & 7))) == 0) {
- printk("VOYAGER SMP: CPU%d lost CPI%d\n", cpu, cpi);
- }
-#endif
- /* send specific EOI; the two system interrupts have
- * bit 4 set for a separate vector but behave as the
- * corresponding 3 bit intr */
- outb_p(0x60 | (cpi & 7), 0x20);
-
-#ifdef VOYAGER_DEBUG
- if ((vic_read_isr() & (1 << (cpi & 7))) != 0) {
- printk("VOYAGER SMP: CPU%d still asserting CPI%d\n", cpu, cpi);
- }
- local_irq_restore(flags);
-#endif
-}
-
-/* cribbed with thanks from irq.c */
-#define __byte(x,y) (((unsigned char *)&(y))[x])
-#define cached_21(cpu) (__byte(0,vic_irq_mask[cpu]))
-#define cached_A1(cpu) (__byte(1,vic_irq_mask[cpu]))
-
-static unsigned int startup_vic_irq(unsigned int irq)
-{
- unmask_vic_irq(irq);
-
- return 0;
-}
-
-/* The enable and disable routines. This is where we run into
- * conflicting architectural philosophy. Fundamentally, the voyager
- * architecture does not expect to have to disable interrupts globally
- * (the IRQ controllers belong to each CPU). The processor masquerade
- * which is used to start the system shouldn't be used in a running OS
- * since it will cause great confusion if two separate CPUs drive to
- * the same IRQ controller (I know, I've tried it).
- *
- * The solution is a variant on the NCR lazy SPL design:
- *
- * 1) To disable an interrupt, do nothing (other than set the
- * IRQ_DISABLED flag). This dares the interrupt actually to arrive.
- *
- * 2) If the interrupt dares to come in, raise the local mask against
- * it (this will result in all the CPU masks being raised
- * eventually).
- *
- * 3) To enable the interrupt, lower the mask on the local CPU and
- * broadcast an Interrupt enable CPI which causes all other CPUs to
- * adjust their masks accordingly. */
-
-static void unmask_vic_irq(unsigned int irq)
-{
- /* linux doesn't to processor-irq affinity, so enable on
- * all CPUs we know about */
- int cpu = smp_processor_id(), real_cpu;
- __u16 mask = (1 << irq);
- __u32 processorList = 0;
- unsigned long flags;
-
- VDEBUG(("VOYAGER: unmask_vic_irq(%d) CPU%d affinity 0x%lx\n",
- irq, cpu, cpu_irq_affinity[cpu]));
- spin_lock_irqsave(&vic_irq_lock, flags);
- for_each_online_cpu(real_cpu) {
- if (!(voyager_extended_vic_processors & (1 << real_cpu)))
- continue;
- if (!(cpu_irq_affinity[real_cpu] & mask)) {
- /* irq has no affinity for this CPU, ignore */
- continue;
- }
- if (real_cpu == cpu) {
- enable_local_vic_irq(irq);
- } else if (vic_irq_mask[real_cpu] & mask) {
- vic_irq_enable_mask[real_cpu] |= mask;
- processorList |= (1 << real_cpu);
- }
- }
- spin_unlock_irqrestore(&vic_irq_lock, flags);
- if (processorList)
- send_CPI(processorList, VIC_ENABLE_IRQ_CPI);
-}
-
-static void mask_vic_irq(unsigned int irq)
-{
- /* lazy disable, do nothing */
-}
-
-static void enable_local_vic_irq(unsigned int irq)
-{
- __u8 cpu = smp_processor_id();
- __u16 mask = ~(1 << irq);
- __u16 old_mask = vic_irq_mask[cpu];
-
- vic_irq_mask[cpu] &= mask;
- if (vic_irq_mask[cpu] == old_mask)
- return;
-
- VDEBUG(("VOYAGER DEBUG: Enabling irq %d in hardware on CPU %d\n",
- irq, cpu));
-
- if (irq & 8) {
- outb_p(cached_A1(cpu), 0xA1);
- (void)inb_p(0xA1);
- } else {
- outb_p(cached_21(cpu), 0x21);
- (void)inb_p(0x21);
- }
-}
-
-static void disable_local_vic_irq(unsigned int irq)
-{
- __u8 cpu = smp_processor_id();
- __u16 mask = (1 << irq);
- __u16 old_mask = vic_irq_mask[cpu];
-
- if (irq == 7)
- return;
-
- vic_irq_mask[cpu] |= mask;
- if (old_mask == vic_irq_mask[cpu])
- return;
-
- VDEBUG(("VOYAGER DEBUG: Disabling irq %d in hardware on CPU %d\n",
- irq, cpu));
-
- if (irq & 8) {
- outb_p(cached_A1(cpu), 0xA1);
- (void)inb_p(0xA1);
- } else {
- outb_p(cached_21(cpu), 0x21);
- (void)inb_p(0x21);
- }
-}
-
-/* The VIC is level triggered, so the ack can only be issued after the
- * interrupt completes. However, we do Voyager lazy interrupt
- * handling here: It is an extremely expensive operation to mask an
- * interrupt in the vic, so we merely set a flag (IRQ_DISABLED). If
- * this interrupt actually comes in, then we mask and ack here to push
- * the interrupt off to another CPU */
-static void before_handle_vic_irq(unsigned int irq)
-{
- irq_desc_t *desc = irq_to_desc(irq);
- __u8 cpu = smp_processor_id();
-
- _raw_spin_lock(&vic_irq_lock);
- vic_intr_total++;
- vic_intr_count[cpu]++;
-
- if (!(cpu_irq_affinity[cpu] & (1 << irq))) {
- /* The irq is not in our affinity mask, push it off
- * onto another CPU */
- VDEBUG(("VOYAGER DEBUG: affinity triggered disable of irq %d "
- "on cpu %d\n", irq, cpu));
- disable_local_vic_irq(irq);
- /* set IRQ_INPROGRESS to prevent the handler in irq.c from
- * actually calling the interrupt routine */
- desc->status |= IRQ_REPLAY | IRQ_INPROGRESS;
- } else if (desc->status & IRQ_DISABLED) {
- /* Damn, the interrupt actually arrived, do the lazy
- * disable thing. The interrupt routine in irq.c will
- * not handle a IRQ_DISABLED interrupt, so nothing more
- * need be done here */
- VDEBUG(("VOYAGER DEBUG: lazy disable of irq %d on CPU %d\n",
- irq, cpu));
- disable_local_vic_irq(irq);
- desc->status |= IRQ_REPLAY;
- } else {
- desc->status &= ~IRQ_REPLAY;
- }
-
- _raw_spin_unlock(&vic_irq_lock);
-}
-
-/* Finish the VIC interrupt: basically mask */
-static void after_handle_vic_irq(unsigned int irq)
-{
- irq_desc_t *desc = irq_to_desc(irq);
-
- _raw_spin_lock(&vic_irq_lock);
- {
- unsigned int status = desc->status & ~IRQ_INPROGRESS;
-#ifdef VOYAGER_DEBUG
- __u16 isr;
-#endif
-
- desc->status = status;
- if ((status & IRQ_DISABLED))
- disable_local_vic_irq(irq);
-#ifdef VOYAGER_DEBUG
- /* DEBUG: before we ack, check what's in progress */
- isr = vic_read_isr();
- if ((isr & (1 << irq) && !(status & IRQ_REPLAY)) == 0) {
- int i;
- __u8 cpu = smp_processor_id();
- __u8 real_cpu;
- int mask; /* Um... initialize me??? --RR */
-
- printk("VOYAGER SMP: CPU%d lost interrupt %d\n",
- cpu, irq);
- for_each_possible_cpu(real_cpu, mask) {
-
- outb(VIC_CPU_MASQUERADE_ENABLE | real_cpu,
- VIC_PROCESSOR_ID);
- isr = vic_read_isr();
- if (isr & (1 << irq)) {
- printk
- ("VOYAGER SMP: CPU%d ack irq %d\n",
- real_cpu, irq);
- ack_vic_irq(irq);
- }
- outb(cpu, VIC_PROCESSOR_ID);
- }
- }
-#endif /* VOYAGER_DEBUG */
- /* as soon as we ack, the interrupt is eligible for
- * receipt by another CPU so everything must be in
- * order here */
- ack_vic_irq(irq);
- if (status & IRQ_REPLAY) {
- /* replay is set if we disable the interrupt
- * in the before_handle_vic_irq() routine, so
- * clear the in progress bit here to allow the
- * next CPU to handle this correctly */
- desc->status &= ~(IRQ_REPLAY | IRQ_INPROGRESS);
- }
-#ifdef VOYAGER_DEBUG
- isr = vic_read_isr();
- if ((isr & (1 << irq)) != 0)
- printk("VOYAGER SMP: after_handle_vic_irq() after "
- "ack irq=%d, isr=0x%x\n", irq, isr);
-#endif /* VOYAGER_DEBUG */
- }
- _raw_spin_unlock(&vic_irq_lock);
-
- /* All code after this point is out of the main path - the IRQ
- * may be intercepted by another CPU if reasserted */
-}
-
-/* Linux processor - interrupt affinity manipulations.
- *
- * For each processor, we maintain a 32 bit irq affinity mask.
- * Initially it is set to all 1's so every processor accepts every
- * interrupt. In this call, we change the processor's affinity mask:
- *
- * Change from enable to disable:
- *
- * If the interrupt ever comes in to the processor, we will disable it
- * and ack it to push it off to another CPU, so just accept the mask here.
- *
- * Change from disable to enable:
- *
- * change the mask and then do an interrupt enable CPI to re-enable on
- * the selected processors */
-
-void set_vic_irq_affinity(unsigned int irq, const struct cpumask *mask)
-{
- /* Only extended processors handle interrupts */
- unsigned long real_mask;
- unsigned long irq_mask = 1 << irq;
- int cpu;
-
- real_mask = cpus_addr(*mask)[0] & voyager_extended_vic_processors;
-
- if (cpus_addr(*mask)[0] == 0)
- /* can't have no CPUs to accept the interrupt -- extremely
- * bad things will happen */
- return;
-
- if (irq == 0)
- /* can't change the affinity of the timer IRQ. This
- * is due to the constraint in the voyager
- * architecture that the CPI also comes in on and IRQ
- * line and we have chosen IRQ0 for this. If you
- * raise the mask on this interrupt, the processor
- * will no-longer be able to accept VIC CPIs */
- return;
-
- if (irq >= 32)
- /* You can only have 32 interrupts in a voyager system
- * (and 32 only if you have a secondary microchannel
- * bus) */
- return;
-
- for_each_online_cpu(cpu) {
- unsigned long cpu_mask = 1 << cpu;
-
- if (cpu_mask & real_mask) {
- /* enable the interrupt for this cpu */
- cpu_irq_affinity[cpu] |= irq_mask;
- } else {
- /* disable the interrupt for this cpu */
- cpu_irq_affinity[cpu] &= ~irq_mask;
- }
- }
- /* this is magic, we now have the correct affinity maps, so
- * enable the interrupt. This will send an enable CPI to
- * those CPUs who need to enable it in their local masks,
- * causing them to correct for the new affinity . If the
- * interrupt is currently globally disabled, it will simply be
- * disabled again as it comes in (voyager lazy disable). If
- * the affinity map is tightened to disable the interrupt on a
- * cpu, it will be pushed off when it comes in */
- unmask_vic_irq(irq);
-}
-
-static void ack_vic_irq(unsigned int irq)
-{
- if (irq & 8) {
- outb(0x62, 0x20); /* Specific EOI to cascade */
- outb(0x60 | (irq & 7), 0xA0);
- } else {
- outb(0x60 | (irq & 7), 0x20);
- }
-}
-
-/* enable the CPIs. In the VIC, the CPIs are delivered by the 8259
- * but are not vectored by it. This means that the 8259 mask must be
- * lowered to receive them */
-static __init void vic_enable_cpi(void)
-{
- __u8 cpu = smp_processor_id();
-
- /* just take a copy of the current mask (nop for boot cpu) */
- vic_irq_mask[cpu] = vic_irq_mask[boot_cpu_id];
-
- enable_local_vic_irq(VIC_CPI_LEVEL0);
- enable_local_vic_irq(VIC_CPI_LEVEL1);
- /* for sys int and cmn int */
- enable_local_vic_irq(7);
-
- if (is_cpu_quad()) {
- outb(QIC_DEFAULT_MASK0, QIC_MASK_REGISTER0);
- outb(QIC_CPI_ENABLE, QIC_MASK_REGISTER1);
- VDEBUG(("VOYAGER SMP: QIC ENABLE CPI: CPU%d: MASK 0x%x\n",
- cpu, QIC_CPI_ENABLE));
- }
-
- VDEBUG(("VOYAGER SMP: ENABLE CPI: CPU%d: MASK 0x%x\n",
- cpu, vic_irq_mask[cpu]));
-}
-
-void voyager_smp_dump()
-{
- int old_cpu = smp_processor_id(), cpu;
-
- /* dump the interrupt masks of each processor */
- for_each_online_cpu(cpu) {
- __u16 imr, isr, irr;
- unsigned long flags;
-
- local_irq_save(flags);
- outb(VIC_CPU_MASQUERADE_ENABLE | cpu, VIC_PROCESSOR_ID);
- imr = (inb(0xa1) << 8) | inb(0x21);
- outb(0x0a, 0xa0);
- irr = inb(0xa0) << 8;
- outb(0x0a, 0x20);
- irr |= inb(0x20);
- outb(0x0b, 0xa0);
- isr = inb(0xa0) << 8;
- outb(0x0b, 0x20);
- isr |= inb(0x20);
- outb(old_cpu, VIC_PROCESSOR_ID);
- local_irq_restore(flags);
- printk("\tCPU%d: mask=0x%x, IMR=0x%x, IRR=0x%x, ISR=0x%x\n",
- cpu, vic_irq_mask[cpu], imr, irr, isr);
-#if 0
- /* These lines are put in to try to unstick an un ack'd irq */
- if (isr != 0) {
- int irq;
- for (irq = 0; irq < 16; irq++) {
- if (isr & (1 << irq)) {
- printk("\tCPU%d: ack irq %d\n",
- cpu, irq);
- local_irq_save(flags);
- outb(VIC_CPU_MASQUERADE_ENABLE | cpu,
- VIC_PROCESSOR_ID);
- ack_vic_irq(irq);
- outb(old_cpu, VIC_PROCESSOR_ID);
- local_irq_restore(flags);
- }
- }
- }
-#endif
- }
-}
-
-void smp_voyager_power_off(void *dummy)
-{
- if (smp_processor_id() == boot_cpu_id)
- voyager_power_off();
- else
- smp_stop_cpu_function(NULL);
-}
-
-static void __init voyager_smp_prepare_cpus(unsigned int max_cpus)
-{
- /* FIXME: ignore max_cpus for now */
- smp_boot_cpus();
-}
-
-static void __cpuinit voyager_smp_prepare_boot_cpu(void)
-{
- int cpu = smp_processor_id();
- switch_to_new_gdt(cpu);
-
- cpu_set(cpu, cpu_online_map);
- cpu_set(cpu, cpu_callout_map);
- cpu_set(cpu, cpu_possible_map);
- cpu_set(cpu, cpu_present_map);
-
-}
-
-static int __cpuinit voyager_cpu_up(unsigned int cpu)
-{
- /* This only works at boot for x86. See "rewrite" above. */
- if (cpu_isset(cpu, smp_commenced_mask))
- return -ENOSYS;
-
- /* In case one didn't come up */
- if (!cpu_isset(cpu, cpu_callin_map))
- return -EIO;
- /* Unleash the CPU! */
- cpu_set(cpu, smp_commenced_mask);
- while (!cpu_online(cpu))
- mb();
- return 0;
-}
-
-static void __init voyager_smp_cpus_done(unsigned int max_cpus)
-{
- zap_low_mappings();
-}
-
-void __init smp_setup_processor_id(void)
-{
- current_thread_info()->cpu = hard_smp_processor_id();
-}
-
-static void voyager_send_call_func(const struct cpumask *callmask)
-{
- __u32 mask = cpus_addr(*callmask)[0] & ~(1 << smp_processor_id());
- send_CPI(mask, VIC_CALL_FUNCTION_CPI);
-}
-
-static void voyager_send_call_func_single(int cpu)
-{
- send_CPI(1 << cpu, VIC_CALL_FUNCTION_SINGLE_CPI);
-}
-
-struct smp_ops smp_ops = {
- .smp_prepare_boot_cpu = voyager_smp_prepare_boot_cpu,
- .smp_prepare_cpus = voyager_smp_prepare_cpus,
- .cpu_up = voyager_cpu_up,
- .smp_cpus_done = voyager_smp_cpus_done,
-
- .smp_send_stop = voyager_smp_send_stop,
- .smp_send_reschedule = voyager_smp_send_reschedule,
-
- .send_call_func_ipi = voyager_send_call_func,
- .send_call_func_single_ipi = voyager_send_call_func_single,
-};
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8 -*- */
-
-/* Copyright (C) 2001
- *
- * Author: J.E.J.Bottomley@HansenPartnership.com
- *
- * This module provides the machine status monitor thread for the
- * voyager architecture. This allows us to monitor the machine
- * environment (temp, voltage, fan function) and the front panel and
- * internal UPS. If a fault is detected, this thread takes corrective
- * action (usually just informing init)
- * */
-
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/kernel_stat.h>
-#include <linux/delay.h>
-#include <linux/mc146818rtc.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/kmod.h>
-#include <linux/completion.h>
-#include <linux/sched.h>
-#include <linux/kthread.h>
-#include <asm/desc.h>
-#include <asm/voyager.h>
-#include <asm/vic.h>
-#include <asm/mtrr.h>
-#include <asm/msr.h>
-
-struct task_struct *voyager_thread;
-static __u8 set_timeout;
-
-static int execute(const char *string)
-{
- int ret;
-
- char *envp[] = {
- "HOME=/",
- "TERM=linux",
- "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
- NULL,
- };
- char *argv[] = {
- "/bin/bash",
- "-c",
- (char *)string,
- NULL,
- };
-
- if ((ret =
- call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC)) != 0) {
- printk(KERN_ERR "Voyager failed to run \"%s\": %i\n", string,
- ret);
- }
- return ret;
-}
-
-static void check_from_kernel(void)
-{
- if (voyager_status.switch_off) {
-
- /* FIXME: This should be configurable via proc */
- execute("umask 600; echo 0 > /etc/initrunlvl; kill -HUP 1");
- } else if (voyager_status.power_fail) {
- VDEBUG(("Voyager daemon detected AC power failure\n"));
-
- /* FIXME: This should be configureable via proc */
- execute("umask 600; echo F > /etc/powerstatus; kill -PWR 1");
- set_timeout = 1;
- }
-}
-
-static void check_continuing_condition(void)
-{
- if (voyager_status.power_fail) {
- __u8 data;
- voyager_cat_psi(VOYAGER_PSI_SUBREAD,
- VOYAGER_PSI_AC_FAIL_REG, &data);
- if ((data & 0x1f) == 0) {
- /* all power restored */
- printk(KERN_NOTICE
- "VOYAGER AC power restored, cancelling shutdown\n");
- /* FIXME: should be user configureable */
- execute
- ("umask 600; echo O > /etc/powerstatus; kill -PWR 1");
- set_timeout = 0;
- }
- }
-}
-
-static int thread(void *unused)
-{
- printk(KERN_NOTICE "Voyager starting monitor thread\n");
-
- for (;;) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(set_timeout ? HZ : MAX_SCHEDULE_TIMEOUT);
-
- VDEBUG(("Voyager Daemon awoken\n"));
- if (voyager_status.request_from_kernel == 0) {
- /* probably awoken from timeout */
- check_continuing_condition();
- } else {
- check_from_kernel();
- voyager_status.request_from_kernel = 0;
- }
- }
-}
-
-static int __init voyager_thread_start(void)
-{
- voyager_thread = kthread_run(thread, NULL, "kvoyagerd");
- if (IS_ERR(voyager_thread)) {
- printk(KERN_ERR
- "Voyager: Failed to create system monitor thread.\n");
- return PTR_ERR(voyager_thread);
- }
- return 0;
-}
-
-static void __exit voyager_thread_stop(void)
-{
- kthread_stop(voyager_thread);
-}
-
-module_init(voyager_thread_start);
-module_exit(voyager_thread_stop);
bool "Xen guest support"
select PARAVIRT
select PARAVIRT_CLOCK
- depends on X86_64 || (X86_32 && X86_PAE && !(X86_VISWS || X86_VOYAGER))
+ depends on X86_64 || (X86_32 && X86_PAE && !X86_VISWS)
depends on X86_CMPXCHG && X86_TSC
help
This is the Linux Xen port. Enabling this will allow the
config LGUEST
tristate "Linux hypervisor example code"
- depends on X86_32 && EXPERIMENTAL && !X86_PAE && FUTEX && !X86_VOYAGER
+ depends on X86_32 && EXPERIMENTAL && !X86_PAE && FUTEX
select HVC_DRIVER
---help---
This is a very simple module which allows you to run
projects / platform / kernel / linux-rpi.git / commitdiff