diff options
Diffstat (limited to 'arch/x86/mach-voyager')
| -rw-r--r-- | arch/x86/mach-voyager/Makefile | 8 | ||||
| -rw-r--r-- | arch/x86/mach-voyager/setup.c | 119 | ||||
| -rw-r--r-- | arch/x86/mach-voyager/voyager_basic.c | 317 | ||||
| -rw-r--r-- | arch/x86/mach-voyager/voyager_cat.c | 1197 | ||||
| -rw-r--r-- | arch/x86/mach-voyager/voyager_smp.c | 1805 | ||||
| -rw-r--r-- | arch/x86/mach-voyager/voyager_thread.c | 128 |
6 files changed, 0 insertions, 3574 deletions
diff --git a/arch/x86/mach-voyager/Makefile b/arch/x86/mach-voyager/Makefile deleted file mode 100644 index 15c250b371d3..000000000000 --- a/arch/x86/mach-voyager/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# -# 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 diff --git a/arch/x86/mach-voyager/setup.c b/arch/x86/mach-voyager/setup.c deleted file mode 100644 index 88c3c555634f..000000000000 --- a/arch/x86/mach-voyager/setup.c +++ /dev/null @@ -1,119 +0,0 @@ -/* - * 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(); -} diff --git a/arch/x86/mach-voyager/voyager_basic.c b/arch/x86/mach-voyager/voyager_basic.c deleted file mode 100644 index 46d6f8067690..000000000000 --- a/arch/x86/mach-voyager/voyager_basic.c +++ /dev/null @@ -1,317 +0,0 @@ -/* 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(); -} diff --git a/arch/x86/mach-voyager/voyager_cat.c b/arch/x86/mach-voyager/voyager_cat.c deleted file mode 100644 index 2ad598c104af..000000000000 --- a/arch/x86/mach-voyager/voyager_cat.c +++ /dev/null @@ -1,1197 +0,0 @@ -/* -*- 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); - } -} diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c deleted file mode 100644 index 98e3c2bc7563..000000000000 --- a/arch/x86/mach-voyager/voyager_smp.c +++ /dev/null @@ -1,1805 +0,0 @@ -/* -*- 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, -}; diff --git a/arch/x86/mach-voyager/voyager_thread.c b/arch/x86/mach-voyager/voyager_thread.c deleted file mode 100644 index 15464a20fb38..000000000000 --- a/arch/x86/mach-voyager/voyager_thread.c +++ /dev/null @@ -1,128 +0,0 @@ -/* -*- 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); |
