X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fchar%2Fipmi%2Fipmi_poweroff.c;h=9d23136e598a74ce54c4a52d6a250f8f8a6202b5;hb=refs%2Fheads%2Fvserver;hp=cb5cdc6f14bf021a43fe9af5996f22f2e84601a2;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c index cb5cdc6f1..9d23136e5 100644 --- a/drivers/char/ipmi/ipmi_poweroff.c +++ b/drivers/char/ipmi/ipmi_poweroff.c @@ -31,23 +31,69 @@ * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include -#include #include +#include +#include #include +#include +#include +#include #include #include #define PFX "IPMI poweroff: " -#define IPMI_POWEROFF_VERSION "v33" -/* Where to we insert our poweroff function? */ -extern void (*pm_power_off)(void); +static void ipmi_po_smi_gone(int if_num); +static void ipmi_po_new_smi(int if_num, struct device *device); + +/* Definitions for controlling power off (if the system supports it). It + * conveniently matches the IPMI chassis control values. */ +#define IPMI_CHASSIS_POWER_DOWN 0 /* power down, the default. */ +#define IPMI_CHASSIS_POWER_CYCLE 0x02 /* power cycle */ + +/* the IPMI data command */ +static int poweroff_powercycle; + +/* Which interface to use, -1 means the first we see. */ +static int ifnum_to_use = -1; + +/* Our local state. */ +static int ready; +static ipmi_user_t ipmi_user; +static int ipmi_ifnum; +static void (*specific_poweroff_func)(ipmi_user_t user); + +/* Holds the old poweroff function so we can restore it on removal. */ +static void (*old_poweroff_func)(void); + +static int set_param_ifnum(const char *val, struct kernel_param *kp) +{ + int rv = param_set_int(val, kp); + if (rv) + return rv; + if ((ifnum_to_use < 0) || (ifnum_to_use == ipmi_ifnum)) + return 0; + + ipmi_po_smi_gone(ipmi_ifnum); + ipmi_po_new_smi(ifnum_to_use, NULL); + return 0; +} + +module_param_call(ifnum_to_use, set_param_ifnum, param_get_int, + &ifnum_to_use, 0644); +MODULE_PARM_DESC(ifnum_to_use, "The interface number to use for the watchdog " + "timer. Setting to -1 defaults to the first registered " + "interface"); + +/* parameter definition to allow user to flag power cycle */ +module_param(poweroff_powercycle, int, 0644); +MODULE_PARM_DESC(poweroff_powercycle, " 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 @@ -75,10 +121,10 @@ static struct ipmi_recv_msg halt_recv_msg = static void receive_handler(struct ipmi_recv_msg *recv_msg, void *handler_data) { - struct semaphore *sem = recv_msg->user_msg_data; + struct completion *comp = recv_msg->user_msg_data; - if (sem) - up(sem); + if (comp) + complete(comp); } static struct ipmi_user_hndl ipmi_poweroff_handler = @@ -91,27 +137,27 @@ static int ipmi_request_wait_for_response(ipmi_user_t user, struct ipmi_addr *addr, struct kernel_ipmi_msg *send_msg) { - int rv; - struct semaphore sem; + int rv; + struct completion comp; - sema_init (&sem, 0); + init_completion(&comp); - rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &sem, + rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &comp, &halt_smi_msg, &halt_recv_msg, 0); if (rv) return rv; - down (&sem); + wait_for_completion(&comp); return halt_recv_msg.msg.data[0]; } -/* We are in run-to-completion mode, no semaphore is desired. */ +/* We are in run-to-completion mode, no completion is desired. */ static int ipmi_request_in_rc_mode(ipmi_user_t user, struct ipmi_addr *addr, struct kernel_ipmi_msg *send_msg) { - int rv; + int rv; rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, &halt_smi_msg, &halt_recv_msg, 0); @@ -130,6 +176,42 @@ static int ipmi_request_in_rc_mode(ipmi_user_t user, #define IPMI_ATCA_GET_ADDR_INFO_CMD 0x01 #define IPMI_PICMG_ID 0 +#define IPMI_NETFN_OEM 0x2e +#define IPMI_ATCA_PPS_GRACEFUL_RESTART 0x11 +#define IPMI_ATCA_PPS_IANA "\x00\x40\x0A" +#define IPMI_MOTOROLA_MANUFACTURER_ID 0x0000A1 +#define IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID 0x0051 + +static void (*atca_oem_poweroff_hook)(ipmi_user_t user); + +static void pps_poweroff_atca (ipmi_user_t user) +{ + struct ipmi_system_interface_addr smi_addr; + struct kernel_ipmi_msg send_msg; + int rv; + /* + * Configure IPMI address for local access + */ + smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + smi_addr.channel = IPMI_BMC_CHANNEL; + smi_addr.lun = 0; + + printk(KERN_INFO PFX "PPS powerdown hook used"); + + send_msg.netfn = IPMI_NETFN_OEM; + send_msg.cmd = IPMI_ATCA_PPS_GRACEFUL_RESTART; + send_msg.data = IPMI_ATCA_PPS_IANA; + send_msg.data_len = 3; + rv = ipmi_request_in_rc_mode(user, + (struct ipmi_addr *) &smi_addr, + &send_msg); + if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { + printk(KERN_ERR PFX "Unable to send ATCA ," + " IPMI error 0x%x\n", rv); + } + return; +} + static int ipmi_atca_detect (ipmi_user_t user) { struct ipmi_system_interface_addr smi_addr; @@ -155,6 +237,13 @@ static int ipmi_atca_detect (ipmi_user_t user) rv = ipmi_request_wait_for_response(user, (struct ipmi_addr *) &smi_addr, &send_msg); + + printk(KERN_INFO PFX "ATCA Detect mfg 0x%X prod 0x%X\n", mfg_id, prod_id); + if((mfg_id == IPMI_MOTOROLA_MANUFACTURER_ID) + && (prod_id == IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID)) { + printk(KERN_INFO PFX "Installing Pigeon Point Systems Poweroff Hook\n"); + atca_oem_poweroff_hook = pps_poweroff_atca; + } return !rv; } @@ -188,12 +277,19 @@ static void ipmi_poweroff_atca (ipmi_user_t user) rv = ipmi_request_in_rc_mode(user, (struct ipmi_addr *) &smi_addr, &send_msg); - if (rv) { + /** At this point, the system may be shutting down, and most + ** serial drivers (if used) will have interrupts turned off + ** it may be better to ignore IPMI_UNKNOWN_ERR_COMPLETION_CODE + ** return code + **/ + if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { printk(KERN_ERR PFX "Unable to send ATCA powerdown message," " IPMI error 0x%x\n", rv); goto out; } + if(atca_oem_poweroff_hook) + return atca_oem_poweroff_hook(user); out: return; } @@ -322,6 +418,25 @@ static void ipmi_poweroff_cpi1 (ipmi_user_t user) return; } +/* + * 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 */ @@ -349,27 +464,36 @@ static void ipmi_poweroff_chassis (ipmi_user_t user) smi_addr.channel = IPMI_BMC_CHANNEL; smi_addr.lun = 0; - printk(KERN_INFO PFX "Powering down via IPMI chassis control command\n"); + powercyclefailed: + printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n", + (poweroff_powercycle ? "cycle" : "down")); /* * Power down */ send_msg.netfn = IPMI_NETFN_CHASSIS_REQUEST; send_msg.cmd = IPMI_CHASSIS_CONTROL_CMD; - data[0] = 0; /* Power down */ + 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) { - printk(KERN_ERR PFX "Unable to send chassis powerdown message," - " IPMI error 0x%x\n", rv); - goto out; + 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; + } + + printk(KERN_ERR PFX "Unable to send chassis power " \ + "down message, IPMI error 0x%x\n", rv); } - - out: - return; } @@ -387,6 +511,9 @@ 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", @@ -397,15 +524,6 @@ static struct poweroff_function poweroff_functions[] = { / sizeof(struct poweroff_function)) -/* Our local state. */ -static int ready = 0; -static ipmi_user_t ipmi_user; -static void (*specific_poweroff_func)(ipmi_user_t user) = NULL; - -/* Holds the old poweroff function so we can restore it on removal. */ -static void (*old_poweroff_func)(void); - - /* Called on a powerdown request. */ static void ipmi_poweroff_function (void) { @@ -420,7 +538,7 @@ static void ipmi_poweroff_function (void) /* Wait for an IPMI interface to be installed, the first one installed will be grabbed by this code and used to perform the powerdown. */ -static void ipmi_po_new_smi(int if_num) +static void ipmi_po_new_smi(int if_num, struct device *device) { struct ipmi_system_interface_addr smi_addr; struct kernel_ipmi_msg send_msg; @@ -430,13 +548,19 @@ static void ipmi_po_new_smi(int if_num) if (ready) return; - rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL, &ipmi_user); + if ((ifnum_to_use >= 0) && (ifnum_to_use != if_num)) + return; + + rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL, + &ipmi_user); if (rv) { printk(KERN_ERR PFX "could not create IPMI user, error %d\n", rv); return; } + ipmi_ifnum = if_num; + /* * Do a get device ide and store some results, since this is * used by several functions. @@ -471,10 +595,11 @@ 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 + +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 }, + { } +}; + +static ctl_table ipmi_dir_table[] = { + { .ctl_name = DEV_IPMI, + .procname = "ipmi", + .mode = 0555, + .child = ipmi_table }, + { } +}; + +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 */ + /* * Startup and shutdown functions. */ @@ -517,13 +680,31 @@ static int ipmi_poweroff_init (void) int rv; printk ("Copyright (C) 2004 MontaVista Software -" - " IPMI Powerdown via sys_reboot version " - IPMI_POWEROFF_VERSION ".\n"); + " 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 rv = ipmi_smi_watcher_register(&smi_watcher); - if (rv) + +#ifdef CONFIG_PROC_FS + if (rv) { + unregister_sysctl_table(ipmi_table_header); printk(KERN_ERR PFX "Unable to register SMI watcher: %d\n", rv); + goto out_err; + } + out_err: +#endif return rv; } @@ -532,6 +713,10 @@ static __exit void ipmi_poweroff_cleanup(void) { int rv; +#ifdef CONFIG_PROC_FS + unregister_sysctl_table(ipmi_table_header); +#endif + ipmi_smi_watcher_unregister(&smi_watcher); if (ready) { @@ -547,3 +732,5 @@ module_exit(ipmi_poweroff_cleanup); module_init(ipmi_poweroff_init); MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Corey Minyard "); +MODULE_DESCRIPTION("IPMI Poweroff extension to sys_reboot");