diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries')
| -rw-r--r-- | arch/powerpc/platforms/pseries/Kconfig | 9 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/iommu.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 13 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/plpar_wrappers.h | 120 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/rtas-fw.c | 138 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/rtas-fw.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/rtasd.c | 527 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 21 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/smp.c | 3 |
10 files changed, 674 insertions, 167 deletions
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index 2d57f588151d..e3fc3407bb1f 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -21,15 +21,6 @@ config EEH depends on PPC_PSERIES default y if !EMBEDDED -config RTAS_PROC - bool "Proc interface to RTAS" - depends on PPC_RTAS - default y - -config RTAS_FLASH - tristate "Firmware flash interface" - depends on PPC64 && RTAS_PROC - config SCANLOG tristate "Scanlog dump interface" depends on RTAS_PROC && PPC_PSERIES diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index 5ef494e3a70f..b9938fece781 100644 --- a/arch/powerpc/platforms/pseries/Makefile +++ b/arch/powerpc/platforms/pseries/Makefile @@ -1,5 +1,5 @@ obj-y := pci.o lpar.o hvCall.o nvram.o reconfig.o \ - setup.o iommu.o rtas-fw.o ras.o + setup.o iommu.o ras.o rtasd.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_IBMVIO) += vio.o obj-$(CONFIG_XICS) += xics.o diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 9e90d41131d8..513e27231493 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -42,13 +42,14 @@ #include <asm/pci-bridge.h> #include <asm/machdep.h> #include <asm/abs_addr.h> -#include <asm/plpar_wrappers.h> #include <asm/pSeries_reconfig.h> #include <asm/systemcfg.h> #include <asm/firmware.h> #include <asm/tce.h> #include <asm/ppc-pci.h> +#include "plpar_wrappers.h" + #define DBG(fmt...) extern int is_python(struct device_node *); @@ -498,7 +499,7 @@ static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long acti switch (action) { case PSERIES_RECONFIG_REMOVE: - if (pci->iommu_table && + if (pci && pci->iommu_table && get_property(np, "ibm,dma-window", NULL)) iommu_free_table(np); break; diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 268d8362dde7..e384a5a91796 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -38,7 +38,8 @@ #include <asm/prom.h> #include <asm/abs_addr.h> #include <asm/cputable.h> -#include <asm/plpar_wrappers.h> + +#include "plpar_wrappers.h" #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) @@ -260,22 +261,18 @@ out: void vpa_init(int cpu) { int hwcpu = get_hard_smp_processor_id(cpu); - unsigned long vpa = (unsigned long)&(paca[cpu].lppaca); + unsigned long vpa = __pa(&paca[cpu].lppaca); long ret; - unsigned long flags; - - /* Register the Virtual Processor Area (VPA) */ - flags = 1UL << (63 - 18); if (cpu_has_feature(CPU_FTR_ALTIVEC)) paca[cpu].lppaca.vmxregs_in_use = 1; - ret = register_vpa(flags, hwcpu, __pa(vpa)); + ret = register_vpa(hwcpu, vpa); if (ret) printk(KERN_ERR "WARNING: vpa_init: VPA registration for " "cpu %d (hw %d) of area %lx returns %ld\n", - cpu, hwcpu, __pa(vpa), ret); + cpu, hwcpu, vpa, ret); } long pSeries_lpar_hpte_insert(unsigned long hpte_group, diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h new file mode 100644 index 000000000000..382f8c5b0e7c --- /dev/null +++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h @@ -0,0 +1,120 @@ +#ifndef _PSERIES_PLPAR_WRAPPERS_H +#define _PSERIES_PLPAR_WRAPPERS_H + +#include <asm/hvcall.h> + +static inline long poll_pending(void) +{ + unsigned long dummy; + return plpar_hcall(H_POLL_PENDING, 0, 0, 0, 0, &dummy, &dummy, &dummy); +} + +static inline long prod_processor(void) +{ + plpar_hcall_norets(H_PROD); + return 0; +} + +static inline long cede_processor(void) +{ + plpar_hcall_norets(H_CEDE); + return 0; +} + +static inline long vpa_call(unsigned long flags, unsigned long cpu, + unsigned long vpa) +{ + /* flags are in bits 16-18 (counting from most significant bit) */ + flags = flags << (63 - 18); + + return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa); +} + +static inline long unregister_vpa(unsigned long cpu, unsigned long vpa) +{ + return vpa_call(0x5, cpu, vpa); +} + +static inline long register_vpa(unsigned long cpu, unsigned long vpa) +{ + return vpa_call(0x1, cpu, vpa); +} + +extern void vpa_init(int cpu); + +static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex, + unsigned long avpn, unsigned long *old_pteh_ret, + unsigned long *old_ptel_ret) +{ + unsigned long dummy; + return plpar_hcall(H_REMOVE, flags, ptex, avpn, 0, old_pteh_ret, + old_ptel_ret, &dummy); +} + +static inline long plpar_pte_read(unsigned long flags, unsigned long ptex, + unsigned long *old_pteh_ret, unsigned long *old_ptel_ret) +{ + unsigned long dummy; + return plpar_hcall(H_READ, flags, ptex, 0, 0, old_pteh_ret, + old_ptel_ret, &dummy); +} + +static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex, + unsigned long avpn) +{ + return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn); +} + +static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba, + unsigned long *tce_ret) +{ + unsigned long dummy; + return plpar_hcall(H_GET_TCE, liobn, ioba, 0, 0, tce_ret, &dummy, + &dummy); +} + +static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba, + unsigned long tceval) +{ + return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval); +} + +static inline long plpar_tce_put_indirect(unsigned long liobn, + unsigned long ioba, unsigned long page, unsigned long count) +{ + return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count); +} + +static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba, + unsigned long tceval, unsigned long count) +{ + return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count); +} + +static inline long plpar_get_term_char(unsigned long termno, + unsigned long *len_ret, char *buf_ret) +{ + unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */ + return plpar_hcall(H_GET_TERM_CHAR, termno, 0, 0, 0, len_ret, + lbuf + 0, lbuf + 1); +} + +static inline long plpar_put_term_char(unsigned long termno, unsigned long len, + const char *buffer) +{ + unsigned long *lbuf = (unsigned long *)buffer; /* TODO: alignment? */ + return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0], + lbuf[1]); +} + +static inline long plpar_set_xdabr(unsigned long address, unsigned long flags) +{ + return plpar_hcall_norets(H_SET_XDABR, address, flags); +} + +static inline long plpar_set_dabr(unsigned long val) +{ + return plpar_hcall_norets(H_SET_DABR, val); +} + +#endif /* _PSERIES_PLPAR_WRAPPERS_H */ diff --git a/arch/powerpc/platforms/pseries/rtas-fw.c b/arch/powerpc/platforms/pseries/rtas-fw.c deleted file mode 100644 index 15d81d758ca0..000000000000 --- a/arch/powerpc/platforms/pseries/rtas-fw.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * - * Procedures for firmware flash updates on pSeries systems. - * - * Peter Bergner, IBM March 2001. - * Copyright (C) 2001 IBM. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <stdarg.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/spinlock.h> -#include <linux/module.h> -#include <linux/init.h> - -#include <asm/prom.h> -#include <asm/rtas.h> -#include <asm/semaphore.h> -#include <asm/machdep.h> -#include <asm/page.h> -#include <asm/param.h> -#include <asm/system.h> -#include <asm/abs_addr.h> -#include <asm/udbg.h> -#include <asm/delay.h> -#include <asm/uaccess.h> -#include <asm/systemcfg.h> - -#include "rtas-fw.h" - -struct flash_block_list_header rtas_firmware_flash_list = {0, NULL}; - -#define FLASH_BLOCK_LIST_VERSION (1UL) - -static void rtas_flash_firmware(void) -{ - unsigned long image_size; - struct flash_block_list *f, *next, *flist; - unsigned long rtas_block_list; - int i, status, update_token; - - update_token = rtas_token("ibm,update-flash-64-and-reboot"); - if (update_token == RTAS_UNKNOWN_SERVICE) { - printk(KERN_ALERT "FLASH: ibm,update-flash-64-and-reboot is not available -- not a service partition?\n"); - printk(KERN_ALERT "FLASH: firmware will not be flashed\n"); - return; - } - - /* NOTE: the "first" block list is a global var with no data - * blocks in the kernel data segment. We do this because - * we want to ensure this block_list addr is under 4GB. - */ - rtas_firmware_flash_list.num_blocks = 0; - flist = (struct flash_block_list *)&rtas_firmware_flash_list; - rtas_block_list = virt_to_abs(flist); - if (rtas_block_list >= 4UL*1024*1024*1024) { - printk(KERN_ALERT "FLASH: kernel bug...flash list header addr above 4GB\n"); - return; - } - - printk(KERN_ALERT "FLASH: preparing saved firmware image for flash\n"); - /* Update the block_list in place. */ - image_size = 0; - for (f = flist; f; f = next) { - /* Translate data addrs to absolute */ - for (i = 0; i < f->num_blocks; i++) { - f->blocks[i].data = (char *)virt_to_abs(f->blocks[i].data); - image_size += f->blocks[i].length; - } - next = f->next; - /* Don't translate NULL pointer for last entry */ - if (f->next) - f->next = (struct flash_block_list *)virt_to_abs(f->next); - else - f->next = NULL; - /* make num_blocks into the version/length field */ - f->num_blocks = (FLASH_BLOCK_LIST_VERSION << 56) | ((f->num_blocks+1)*16); - } - - printk(KERN_ALERT "FLASH: flash image is %ld bytes\n", image_size); - printk(KERN_ALERT "FLASH: performing flash and reboot\n"); - rtas_progress("Flashing \n", 0x0); - rtas_progress("Please Wait... ", 0x0); - printk(KERN_ALERT "FLASH: this will take several minutes. Do not power off!\n"); - status = rtas_call(update_token, 1, 1, NULL, rtas_block_list); - switch (status) { /* should only get "bad" status */ - case 0: - printk(KERN_ALERT "FLASH: success\n"); - break; - case -1: - printk(KERN_ALERT "FLASH: hardware error. Firmware may not be not flashed\n"); - break; - case -3: - printk(KERN_ALERT "FLASH: image is corrupt or not correct for this platform. Firmware not flashed\n"); - break; - case -4: - printk(KERN_ALERT "FLASH: flash failed when partially complete. System may not reboot\n"); - break; - default: - printk(KERN_ALERT "FLASH: unknown flash return code %d\n", status); - break; - } -} - -void rtas_flash_bypass_warning(void) -{ - printk(KERN_ALERT "FLASH: firmware flash requires a reboot\n"); - printk(KERN_ALERT "FLASH: the firmware image will NOT be flashed\n"); -} - - -void rtas_fw_restart(char *cmd) -{ - if (rtas_firmware_flash_list.next) - rtas_flash_firmware(); - rtas_restart(cmd); -} - -void rtas_fw_power_off(void) -{ - if (rtas_firmware_flash_list.next) - rtas_flash_bypass_warning(); - rtas_power_off(); -} - -void rtas_fw_halt(void) -{ - if (rtas_firmware_flash_list.next) - rtas_flash_bypass_warning(); - rtas_halt(); -} - -EXPORT_SYMBOL(rtas_firmware_flash_list); diff --git a/arch/powerpc/platforms/pseries/rtas-fw.h b/arch/powerpc/platforms/pseries/rtas-fw.h deleted file mode 100644 index e70fa69974a3..000000000000 --- a/arch/powerpc/platforms/pseries/rtas-fw.h +++ /dev/null @@ -1,3 +0,0 @@ -void rtas_fw_restart(char *cmd); -void rtas_fw_power_off(void); -void rtas_fw_halt(void); diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c new file mode 100644 index 000000000000..e26b0420b6dd --- /dev/null +++ b/arch/powerpc/platforms/pseries/rtasd.c @@ -0,0 +1,527 @@ +/* + * Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Communication to userspace based on kernel/printk.c + */ + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/poll.h> +#include <linux/proc_fs.h> +#include <linux/init.h> +#include <linux/vmalloc.h> +#include <linux/spinlock.h> +#include <linux/cpu.h> +#include <linux/delay.h> + +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/rtas.h> +#include <asm/prom.h> +#include <asm/nvram.h> +#include <asm/atomic.h> +#include <asm/systemcfg.h> + +#if 0 +#define DEBUG(A...) printk(KERN_ERR A) +#else +#define DEBUG(A...) +#endif + +static DEFINE_SPINLOCK(rtasd_log_lock); + +DECLARE_WAIT_QUEUE_HEAD(rtas_log_wait); + +static char *rtas_log_buf; +static unsigned long rtas_log_start; +static unsigned long rtas_log_size; + +static int surveillance_timeout = -1; +static unsigned int rtas_event_scan_rate; +static unsigned int rtas_error_log_max; +static unsigned int rtas_error_log_buffer_max; + +static int full_rtas_msgs = 0; + +extern int no_logging; + +volatile int error_log_cnt = 0; + +/* + * Since we use 32 bit RTAS, the physical address of this must be below + * 4G or else bad things happen. Allocate this in the kernel data and + * make it big enough. + */ +static unsigned char logdata[RTAS_ERROR_LOG_MAX]; + +static int get_eventscan_parms(void); + +static char *rtas_type[] = { + "Unknown", "Retry", "TCE Error", "Internal Device Failure", + "Timeout", "Data Parity", "Address Parity", "Cache Parity", + "Address Invalid", "ECC Uncorrected", "ECC Corrupted", +}; + +static char *rtas_event_type(int type) +{ + if ((type > 0) && (type < 11)) + return rtas_type[type]; + + switch (type) { + case RTAS_TYPE_EPOW: + return "EPOW"; + case RTAS_TYPE_PLATFORM: + return "Platform Error"; + case RTAS_TYPE_IO: + return "I/O Event"; + case RTAS_TYPE_INFO: + return "Platform Information Event"; + case RTAS_TYPE_DEALLOC: + return "Resource Deallocation Event"; + case RTAS_TYPE_DUMP: + return "Dump Notification Event"; + } + + return rtas_type[0]; +} + +/* To see this info, grep RTAS /var/log/messages and each entry + * will be collected together with obvious begin/end. + * There will be a unique identifier on the begin and end lines. + * This will persist across reboots. + * + * format of error logs returned from RTAS: + * bytes (size) : contents + * -------------------------------------------------------- + * 0-7 (8) : rtas_error_log + * 8-47 (40) : extended info + * 48-51 (4) : vendor id + * 52-1023 (vendor specific) : location code and debug data + */ +static void printk_log_rtas(char *buf, int len) +{ + + int i,j,n = 0; + int perline = 16; + char buffer[64]; + char * str = "RTAS event"; + + if (full_rtas_msgs) { + printk(RTAS_DEBUG "%d -------- %s begin --------\n", + error_log_cnt, str); + + /* + * Print perline bytes on each line, each line will start + * with RTAS and a changing number, so syslogd will + * print lines that are otherwise the same. Separate every + * 4 bytes with a space. + */ + for (i = 0; i < len; i++) { + j = i % perline; + if (j == 0) { + memset(buffer, 0, sizeof(buffer)); + n = sprintf(buffer, "RTAS %d:", i/perline); + } + + if ((i % 4) == 0) + n += sprintf(buffer+n, " "); + + n += sprintf(buffer+n, "%02x", (unsigned char)buf[i]); + + if (j == (perline-1)) + printk(KERN_DEBUG "%s\n", buffer); + } + if ((i % perline) != 0) + printk(KERN_DEBUG "%s\n", buffer); + + printk(RTAS_DEBUG "%d -------- %s end ----------\n", + error_log_cnt, str); + } else { + struct rtas_error_log *errlog = (struct rtas_error_log *)buf; + + printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n", + error_log_cnt, rtas_event_type(errlog->type), + errlog->severity); + } +} + +static int log_rtas_len(char * buf) +{ + int len; + struct rtas_error_log *err; + + /* rtas fixed header */ + len = 8; + err = (struct rtas_error_log *)buf; + if (err->extended_log_length) { + + /* extended header */ + len += err->extended_log_length; + } + + if (rtas_error_log_max == 0) { + get_eventscan_parms(); + } + if (len > rtas_error_log_max) + len = rtas_error_log_max; + + return len; +} + +/* + * First write to nvram, if fatal error, that is the only + * place we log the info. The error will be picked up + * on the next reboot by rtasd. If not fatal, run the + * method for the type of error. Currently, only RTAS + * errors have methods implemented, but in the future + * there might be a need to store data in nvram before a + * call to panic(). + * + * XXX We write to nvram periodically, to indicate error has + * been written and sync'd, but there is a possibility + * that if we don't shutdown correctly, a duplicate error + * record will be created on next reboot. + */ +void pSeries_log_error(char *buf, unsigned int err_type, int fatal) +{ + unsigned long offset; + unsigned long s; + int len = 0; + + DEBUG("logging event\n"); + if (buf == NULL) + return; + + spin_lock_irqsave(&rtasd_log_lock, s); + + /* get length and increase count */ + switch (err_type & ERR_TYPE_MASK) { + case ERR_TYPE_RTAS_LOG: + len = log_rtas_len(buf); + if (!(err_type & ERR_FLAG_BOOT)) + error_log_cnt++; + break; + case ERR_TYPE_KERNEL_PANIC: + default: + spin_unlock_irqrestore(&rtasd_log_lock, s); + return; + } + + /* Write error to NVRAM */ + if (!no_logging && !(err_type & ERR_FLAG_BOOT)) + nvram_write_error_log(buf, len, err_type); + + /* + * rtas errors can occur during boot, and we do want to capture + * those somewhere, even if nvram isn't ready (why not?), and even + * if rtasd isn't ready. Put them into the boot log, at least. + */ + if ((err_type & ERR_TYPE_MASK) == ERR_TYPE_RTAS_LOG) + printk_log_rtas(buf, len); + + /* Check to see if we need to or have stopped logging */ + if (fatal || no_logging) { + no_logging = 1; + spin_unlock_irqrestore(&rtasd_log_lock, s); + return; + } + + /* call type specific method for error */ + switch (err_type & ERR_TYPE_MASK) { + case ERR_TYPE_RTAS_LOG: + offset = rtas_error_log_buffer_max * + ((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK); + + /* First copy over sequence number */ + memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int)); + + /* Second copy over error log data */ + offset += sizeof(int); + memcpy(&rtas_log_buf[offset], buf, len); + + if (rtas_log_size < LOG_NUMBER) + rtas_log_size += 1; + else + rtas_log_start += 1; + + spin_unlock_irqrestore(&rtasd_log_lock, s); + wake_up_interruptible(&rtas_log_wait); + break; + case ERR_TYPE_KERNEL_PANIC: + default: + spin_unlock_irqrestore(&rtasd_log_lock, s); + return; + } + +} + + +static int rtas_log_open(struct inode * inode, struct file * file) +{ + return 0; +} + +static int rtas_log_release(struct inode * inode, struct file * file) +{ + return 0; +} + +/* This will check if all events are logged, if they are then, we + * know that we can safely clear the events in NVRAM. + * Next we'll sit and wait for something else to log. + */ +static ssize_t rtas_log_read(struct file * file, char __user * buf, + size_t count, loff_t *ppos) +{ + int error; + char *tmp; + unsigned long s; + unsigned long offset; + + if (!buf || count < rtas_error_log_buffer_max) + return -EINVAL; + + count = rtas_error_log_buffer_max; + + if (!access_ok(VERIFY_WRITE, buf, count)) + return -EFAULT; + + tmp = kmalloc(count, GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + + spin_lock_irqsave(&rtasd_log_lock, s); + /* if it's 0, then we know we got the last one (the one in NVRAM) */ + if (rtas_log_size == 0 && !no_logging) + nvram_clear_error_log(); + spin_unlock_irqrestore(&rtasd_log_lock, s); + + + error = wait_event_interruptible(rtas_log_wait, rtas_log_size); + if (error) + goto out; + + spin_lock_irqsave(&rtasd_log_lock, s); + offset = rtas_error_log_buffer_max * (rtas_log_start & LOG_NUMBER_MASK); + memcpy(tmp, &rtas_log_buf[offset], count); + + rtas_log_start += 1; + rtas_log_size -= 1; + spin_unlock_irqrestore(&rtasd_log_lock, s); + + error = copy_to_user(buf, tmp, count) ? -EFAULT : count; +out: + kfree(tmp); + return error; +} + +static unsigned int rtas_log_poll(struct file *file, poll_table * wait) +{ + poll_wait(file, &rtas_log_wait, wait); + if (rtas_log_size) + return POLLIN | POLLRDNORM; + return 0; +} + +struct file_operations proc_rtas_log_operations = { + .read = rtas_log_read, + .poll = rtas_log_poll, + .open = rtas_log_open, + .release = rtas_log_release, +}; + +static int enable_surveillance(int timeout) +{ + int error; + + error = rtas_set_indicator(SURVEILLANCE_TOKEN, 0, timeout); + + if (error == 0) + return 0; + + if (error == -EINVAL) { + printk(KERN_INFO "rtasd: surveillance not supported\n"); + return 0; + } + + printk(KERN_ERR "rtasd: could not update surveillance\n"); + return -1; +} + +static int get_eventscan_parms(void) +{ + struct device_node *node; + int *ip; + + node = of_find_node_by_path("/rtas"); + + ip = (int *)get_property(node, "rtas-event-scan-rate", NULL); + if (ip == NULL) { + printk(KERN_ERR "rtasd: no rtas-event-scan-rate\n"); + of_node_put(node); + return -1; + } + rtas_event_scan_rate = *ip; + DEBUG("rtas-event-scan-rate %d\n", rtas_event_scan_rate); + + /* Make room for the sequence number */ + rtas_error_log_max = rtas_get_error_log_max(); + rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int); + + of_node_put(node); + + return 0; +} + +static void do_event_scan(int event_scan) +{ + int error; + do { + memset(logdata, 0, rtas_error_log_max); + error = rtas_call(event_scan, 4, 1, NULL, + RTAS_EVENT_SCAN_ALL_EVENTS, 0, + __pa(logdata), rtas_error_log_max); + if (error == -1) { + printk(KERN_ERR "event-scan failed\n"); + break; + } + + if (error == 0) + pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0); + + } while(error == 0); +} + +static void do_event_scan_all_cpus(long delay) +{ + int cpu; + + lock_cpu_hotplug(); + cpu = first_cpu(cpu_online_map); + for (;;) { + set_cpus_allowed(current, cpumask_of_cpu(cpu)); + do_event_scan(rtas_token("event-scan")); + set_cpus_allowed(current, CPU_MASK_ALL); + + /* Drop hotplug lock, and sleep for the specified delay */ + unlock_cpu_hotplug(); + msleep_interruptible(delay); + lock_cpu_hotplug(); + + cpu = next_cpu(cpu, cpu_online_map); + if (cpu == NR_CPUS) + break; + } + unlock_cpu_hotplug(); +} + +static int rtasd(void *unused) +{ + unsigned int err_type; + int event_scan = rtas_token("event-scan"); + int rc; + + daemonize("rtasd"); + + if (event_scan == RTAS_UNKNOWN_SERVICE || get_eventscan_parms() == -1) + goto error; + + rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER); + if (!rtas_log_buf) { + printk(KERN_ERR "rtasd: no memory\n"); + goto error; + } + + printk(KERN_INFO "RTAS daemon started\n"); + + DEBUG("will sleep for %d milliseconds\n", (30000/rtas_event_scan_rate)); + + /* See if we have any error stored in NVRAM */ + memset(logdata, 0, rtas_error_log_max); + + rc = nvram_read_error_log(logdata, rtas_error_log_max, &err_type); + + /* We can use rtas_log_buf now */ + no_logging = 0; + + if (!rc) { + if (err_type != ERR_FLAG_ALREADY_LOGGED) { + pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0); + } + } + + /* First pass. */ + do_event_scan_all_cpus(1000); + + if (surveillance_timeout != -1) { + DEBUG("enabling surveillance\n"); + enable_surveillance(surveillance_timeout); + DEBUG("surveillance enabled\n"); + } + + /* Delay should be at least one second since some + * machines have problems if we call event-scan too + * quickly. */ + for (;;) + do_event_scan_all_cpus(30000/rtas_event_scan_rate); + +error: + /* Should delete proc entries */ + return -EINVAL; +} + +static int __init rtas_init(void) +{ + struct proc_dir_entry *entry; + + /* No RTAS, only warn if we are on a pSeries box */ + if (rtas_token("event-scan") == RTAS_UNKNOWN_SERVICE) { + if (systemcfg->platform & PLATFORM_PSERIES) + printk(KERN_INFO "rtasd: no event-scan on system\n"); + return 1; + } + + entry = create_proc_entry("ppc64/rtas/error_log", S_IRUSR, NULL); + if (entry) + entry->proc_fops = &proc_rtas_log_operations; + else + printk(KERN_ERR "Failed to create error_log proc entry\n"); + + if (kernel_thread(rtasd, NULL, CLONE_FS) < 0) + printk(KERN_ERR "Failed to start RTAS daemon\n"); + + return 0; +} + +static int __init surveillance_setup(char *str) +{ + int i; + + if (get_option(&str,&i)) { + if (i >= 0 && i <= 255) + surveillance_timeout = i; + } + + return 1; +} + +static int __init rtasmsgs_setup(char *str) +{ + if (strcmp(str, "on") == 0) + full_rtas_msgs = 1; + else if (strcmp(str, "off") == 0) + full_rtas_msgs = 0; + + return 1; +} +__initcall(rtas_init); +__setup("surveillance=", surveillance_setup); +__setup("rtasmsgs=", rtasmsgs_setup); diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 10cb0f2d9b5b..65bee939eecc 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -58,7 +58,6 @@ #include <asm/irq.h> #include <asm/time.h> #include <asm/nvram.h> -#include <asm/plpar_wrappers.h> #include "xics.h" #include <asm/firmware.h> #include <asm/pmc.h> @@ -67,7 +66,7 @@ #include <asm/i8259.h> #include <asm/udbg.h> -#include "rtas-fw.h" +#include "plpar_wrappers.h" #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) @@ -352,6 +351,16 @@ static void pSeries_mach_cpu_die(void) for(;;); } +static int pseries_set_dabr(unsigned long dabr) +{ + if (firmware_has_feature(FW_FEATURE_XDABR)) { + /* We want to catch accesses from kernel and userspace */ + return plpar_set_xdabr(dabr, H_DABRX_KERNEL | H_DABRX_USER); + } + + return plpar_set_dabr(dabr); +} + /* * Early initialization. Relocation is on but do not reference unbolted pages @@ -387,6 +396,8 @@ static void __init pSeries_init_early(void) DBG("Hello World !\n"); } + if (firmware_has_feature(FW_FEATURE_XDABR | FW_FEATURE_DABR)) + ppc_md.set_dabr = pseries_set_dabr; iommu_init_early_pSeries(); @@ -591,9 +602,9 @@ struct machdep_calls __initdata pSeries_md = { .pcibios_fixup = pSeries_final_fixup, .pci_probe_mode = pSeries_pci_probe_mode, .irq_bus_setup = pSeries_irq_bus_setup, - .restart = rtas_fw_restart, - .power_off = rtas_fw_power_off, - .halt = rtas_fw_halt, + .restart = rtas_restart, + .power_off = rtas_power_off, + .halt = rtas_halt, .panic = rtas_os_term, .cpu_die = pSeries_mach_cpu_die, .get_boot_time = rtas_get_boot_time, diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 9c9458ddfc25..7a243e8ccd7e 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -44,10 +44,11 @@ #include <asm/firmware.h> #include <asm/system.h> #include <asm/rtas.h> -#include <asm/plpar_wrappers.h> #include <asm/pSeries_reconfig.h> #include <asm/mpic.h> +#include "plpar_wrappers.h" + #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) #else |