diff options
author | Dmitry Torokhov <dtor_core@ameritech.net> | 2005-09-09 20:14:47 -0500 |
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committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2005-09-09 20:14:47 -0500 |
commit | d344c5e0856ad03278d8700b503762dbc8b86e12 (patch) | |
tree | a6d893a643470a3c2580a58f3228a55fa1fd1d82 /drivers/char/ipmi/ipmi_poweroff.c | |
parent | 010988e888a0abbe7118635c1b33d049caae6b29 (diff) | |
parent | 87fc767b832ef5a681a0ff9d203c3289bc3be2bf (diff) | |
download | linux-d344c5e0856ad03278d8700b503762dbc8b86e12.tar.bz2 |
Manual merge with Linus
Diffstat (limited to 'drivers/char/ipmi/ipmi_poweroff.c')
-rw-r--r-- | drivers/char/ipmi/ipmi_poweroff.c | 168 |
1 files changed, 88 insertions, 80 deletions
diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c index f951c30236c9..e82a96ba396b 100644 --- a/drivers/char/ipmi/ipmi_poweroff.c +++ b/drivers/char/ipmi/ipmi_poweroff.c @@ -42,7 +42,6 @@ #include <linux/ipmi_smi.h> #define PFX "IPMI poweroff: " -#define IPMI_POWEROFF_VERSION "v33" /* Where to we insert our poweroff function? */ extern void (*pm_power_off)(void); @@ -53,16 +52,17 @@ extern void (*pm_power_off)(void); #define IPMI_CHASSIS_POWER_CYCLE 0x02 /* power cycle */ /* the IPMI data command */ -static int poweroff_control = IPMI_CHASSIS_POWER_DOWN; +static int poweroff_powercycle; /* parameter definition to allow user to flag power cycle */ -module_param(poweroff_control, int, IPMI_CHASSIS_POWER_DOWN); -MODULE_PARM_DESC(poweroff_control, " Set to 2 to enable power cycle instead of power down. Power cycle is contingent on hardware support, otherwise it defaults back to power down."); +module_param(poweroff_powercycle, int, 0); +MODULE_PARM_DESC(poweroff_powercycles, " Set to non-zero to enable power cycle instead of power down. Power cycle is contingent on hardware support, otherwise it defaults back to power down."); /* Stuff from the get device id command. */ static unsigned int mfg_id; static unsigned int prod_id; static unsigned char capabilities; +static unsigned char ipmi_version; /* We use our own messages for this operation, we don't let the system allocate them, since we may be in a panic situation. The whole @@ -338,6 +338,25 @@ static void ipmi_poweroff_cpi1 (ipmi_user_t user) } /* + * ipmi_dell_chassis_detect() + * Dell systems with IPMI < 1.5 don't set the chassis capability bit + * but they can handle a chassis poweroff or powercycle command. + */ + +#define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00} +static int ipmi_dell_chassis_detect (ipmi_user_t user) +{ + const char ipmi_version_major = ipmi_version & 0xF; + const char ipmi_version_minor = (ipmi_version >> 4) & 0xF; + const char mfr[3]=DELL_IANA_MFR_ID; + if (!memcmp(mfr, &mfg_id, sizeof(mfr)) && + ipmi_version_major <= 1 && + ipmi_version_minor < 5) + return 1; + return 0; +} + +/* * Standard chassis support */ @@ -366,37 +385,34 @@ static void ipmi_poweroff_chassis (ipmi_user_t user) powercyclefailed: printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n", - ((poweroff_control != IPMI_CHASSIS_POWER_CYCLE) ? "down" : "cycle")); + (poweroff_powercycle ? "cycle" : "down")); /* * Power down */ send_msg.netfn = IPMI_NETFN_CHASSIS_REQUEST; send_msg.cmd = IPMI_CHASSIS_CONTROL_CMD; - data[0] = poweroff_control; + if (poweroff_powercycle) + data[0] = IPMI_CHASSIS_POWER_CYCLE; + else + data[0] = IPMI_CHASSIS_POWER_DOWN; send_msg.data = data; send_msg.data_len = sizeof(data); rv = ipmi_request_in_rc_mode(user, (struct ipmi_addr *) &smi_addr, &send_msg); if (rv) { - switch (poweroff_control) { - case IPMI_CHASSIS_POWER_CYCLE: - /* power cycle failed, default to power down */ - printk(KERN_ERR PFX "Unable to send chassis power " \ - "cycle message, IPMI error 0x%x\n", rv); - poweroff_control = IPMI_CHASSIS_POWER_DOWN; - goto powercyclefailed; - - case IPMI_CHASSIS_POWER_DOWN: - default: - printk(KERN_ERR PFX "Unable to send chassis power " \ - "down message, IPMI error 0x%x\n", rv); - break; + if (poweroff_powercycle) { + /* power cycle failed, default to power down */ + printk(KERN_ERR PFX "Unable to send chassis power " \ + "cycle message, IPMI error 0x%x\n", rv); + poweroff_powercycle = 0; + goto powercyclefailed; } - } - return; + printk(KERN_ERR PFX "Unable to send chassis power " \ + "down message, IPMI error 0x%x\n", rv); + } } @@ -414,6 +430,9 @@ static struct poweroff_function poweroff_functions[] = { { .platform_type = "CPI1", .detect = ipmi_cpi1_detect, .poweroff_func = ipmi_poweroff_cpi1 }, + { .platform_type = "chassis", + .detect = ipmi_dell_chassis_detect, + .poweroff_func = ipmi_poweroff_chassis }, /* Chassis should generally be last, other things should override it. */ { .platform_type = "chassis", @@ -499,10 +518,11 @@ static void ipmi_po_new_smi(int if_num) prod_id = (halt_recv_msg.msg.data[10] | (halt_recv_msg.msg.data[11] << 8)); capabilities = halt_recv_msg.msg.data[6]; + ipmi_version = halt_recv_msg.msg.data[5]; /* Scan for a poweroff method */ - for (i=0; i<NUM_PO_FUNCS; i++) { + for (i = 0; i < NUM_PO_FUNCS; i++) { if (poweroff_functions[i].detect(ipmi_user)) goto found; } @@ -538,39 +558,35 @@ static struct ipmi_smi_watcher smi_watcher = #ifdef CONFIG_PROC_FS -/* displays properties to proc */ -static int proc_read_chassctrl(char *page, char **start, off_t off, int count, - int *eof, void *data) -{ - return sprintf(page, "%d\t[ 0=powerdown 2=powercycle ]\n", - poweroff_control); -} +#include <linux/sysctl.h> + +static ctl_table ipmi_table[] = { + { .ctl_name = DEV_IPMI_POWEROFF_POWERCYCLE, + .procname = "poweroff_powercycle", + .data = &poweroff_powercycle, + .maxlen = sizeof(poweroff_powercycle), + .mode = 0644, + .proc_handler = &proc_dointvec }, + { } +}; -/* process property writes from proc */ -static int proc_write_chassctrl(struct file *file, const char *buffer, - unsigned long count, void *data) -{ - int rv = count; - unsigned int newval = 0; - - sscanf(buffer, "%d", &newval); - switch (newval) { - case IPMI_CHASSIS_POWER_CYCLE: - printk(KERN_INFO PFX "power cycle is now enabled\n"); - poweroff_control = newval; - break; - - case IPMI_CHASSIS_POWER_DOWN: - poweroff_control = IPMI_CHASSIS_POWER_DOWN; - break; - - default: - rv = -EINVAL; - break; - } +static ctl_table ipmi_dir_table[] = { + { .ctl_name = DEV_IPMI, + .procname = "ipmi", + .mode = 0555, + .child = ipmi_table }, + { } +}; - return rv; -} +static ctl_table ipmi_root_table[] = { + { .ctl_name = CTL_DEV, + .procname = "dev", + .mode = 0555, + .child = ipmi_dir_table }, + { } +}; + +static struct ctl_table_header *ipmi_table_header; #endif /* CONFIG_PROC_FS */ /* @@ -578,42 +594,32 @@ static int proc_write_chassctrl(struct file *file, const char *buffer, */ static int ipmi_poweroff_init (void) { - int rv; - struct proc_dir_entry *file; + int rv; printk ("Copyright (C) 2004 MontaVista Software -" - " IPMI Powerdown via sys_reboot version " - IPMI_POWEROFF_VERSION ".\n"); - - switch (poweroff_control) { - case IPMI_CHASSIS_POWER_CYCLE: - printk(KERN_INFO PFX "Power cycle is enabled.\n"); - break; - - case IPMI_CHASSIS_POWER_DOWN: - default: - poweroff_control = IPMI_CHASSIS_POWER_DOWN; - break; + " IPMI Powerdown via sys_reboot.\n"); + + if (poweroff_powercycle) + printk(KERN_INFO PFX "Power cycle is enabled.\n"); + +#ifdef CONFIG_PROC_FS + ipmi_table_header = register_sysctl_table(ipmi_root_table, 1); + if (!ipmi_table_header) { + printk(KERN_ERR PFX "Unable to register powercycle sysctl\n"); + rv = -ENOMEM; + goto out_err; } +#endif +#ifdef CONFIG_PROC_FS rv = ipmi_smi_watcher_register(&smi_watcher); +#endif if (rv) { + unregister_sysctl_table(ipmi_table_header); printk(KERN_ERR PFX "Unable to register SMI watcher: %d\n", rv); goto out_err; } -#ifdef CONFIG_PROC_FS - file = create_proc_entry("poweroff_control", 0, proc_ipmi_root); - if (!file) { - printk(KERN_ERR PFX "Unable to create proc power control\n"); - } else { - file->nlink = 1; - file->read_proc = proc_read_chassctrl; - file->write_proc = proc_write_chassctrl; - file->owner = THIS_MODULE; - } -#endif - out_err: return rv; } @@ -624,7 +630,7 @@ static __exit void ipmi_poweroff_cleanup(void) int rv; #ifdef CONFIG_PROC_FS - remove_proc_entry("poweroff_control", proc_ipmi_root); + unregister_sysctl_table(ipmi_table_header); #endif ipmi_smi_watcher_unregister(&smi_watcher); @@ -642,3 +648,5 @@ module_exit(ipmi_poweroff_cleanup); module_init(ipmi_poweroff_init); MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); +MODULE_DESCRIPTION("IPMI Poweroff extension to sys_reboot"); |