11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * ipmi_poweroff.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * MontaVista IPMI Poweroff extension to sys_reboot 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Author: MontaVista Software, Inc. 71da177e4SLinus Torvalds * Steven Dake <sdake@mvista.com> 81da177e4SLinus Torvalds * Corey Minyard <cminyard@mvista.com> 91da177e4SLinus Torvalds * source@mvista.com 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * Copyright 2002,2004 MontaVista Software Inc. 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify it 141da177e4SLinus Torvalds * under the terms of the GNU General Public License as published by the 151da177e4SLinus Torvalds * Free Software Foundation; either version 2 of the License, or (at your 161da177e4SLinus Torvalds * option) any later version. 171da177e4SLinus Torvalds * 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 201da177e4SLinus Torvalds * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 211da177e4SLinus Torvalds * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 221da177e4SLinus Torvalds * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 231da177e4SLinus Torvalds * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 241da177e4SLinus Torvalds * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 251da177e4SLinus Torvalds * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 261da177e4SLinus Torvalds * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 271da177e4SLinus Torvalds * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 281da177e4SLinus Torvalds * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 291da177e4SLinus Torvalds * 301da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License along 311da177e4SLinus Torvalds * with this program; if not, write to the Free Software Foundation, Inc., 321da177e4SLinus Torvalds * 675 Mass Ave, Cambridge, MA 02139, USA. 331da177e4SLinus Torvalds */ 341da177e4SLinus Torvalds #include <linux/module.h> 353b625943SCorey Minyard #include <linux/moduleparam.h> 363b625943SCorey Minyard #include <linux/proc_fs.h> 371da177e4SLinus Torvalds #include <linux/string.h> 3877cf3973SCorey Minyard #include <linux/completion.h> 39e933b6d6SOlaf Hering #include <linux/pm.h> 4077cf3973SCorey Minyard #include <linux/kdev_t.h> 411da177e4SLinus Torvalds #include <linux/ipmi.h> 421da177e4SLinus Torvalds #include <linux/ipmi_smi.h> 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds #define PFX "IPMI poweroff: " 451da177e4SLinus Torvalds 46b2c03941SCorey Minyard static void ipmi_po_smi_gone(int if_num); 47b2c03941SCorey Minyard static void ipmi_po_new_smi(int if_num, struct device *device); 48b2c03941SCorey Minyard 493b625943SCorey Minyard /* Definitions for controlling power off (if the system supports it). It 503b625943SCorey Minyard * conveniently matches the IPMI chassis control values. */ 513b625943SCorey Minyard #define IPMI_CHASSIS_POWER_DOWN 0 /* power down, the default. */ 523b625943SCorey Minyard #define IPMI_CHASSIS_POWER_CYCLE 0x02 /* power cycle */ 533b625943SCorey Minyard 543b625943SCorey Minyard /* the IPMI data command */ 558c702e16SCorey Minyard static int poweroff_powercycle; 563b625943SCorey Minyard 57b2c03941SCorey Minyard /* Which interface to use, -1 means the first we see. */ 58b2c03941SCorey Minyard static int ifnum_to_use = -1; 59b2c03941SCorey Minyard 60b2c03941SCorey Minyard /* Our local state. */ 61b2c03941SCorey Minyard static int ready = 0; 62b2c03941SCorey Minyard static ipmi_user_t ipmi_user; 63b2c03941SCorey Minyard static int ipmi_ifnum; 64b2c03941SCorey Minyard static void (*specific_poweroff_func)(ipmi_user_t user) = NULL; 65b2c03941SCorey Minyard 66b2c03941SCorey Minyard /* Holds the old poweroff function so we can restore it on removal. */ 67b2c03941SCorey Minyard static void (*old_poweroff_func)(void); 68b2c03941SCorey Minyard 69b2c03941SCorey Minyard static int set_param_ifnum(const char *val, struct kernel_param *kp) 70b2c03941SCorey Minyard { 71b2c03941SCorey Minyard int rv = param_set_int(val, kp); 72b2c03941SCorey Minyard if (rv) 73b2c03941SCorey Minyard return rv; 74b2c03941SCorey Minyard if ((ifnum_to_use < 0) || (ifnum_to_use == ipmi_ifnum)) 75b2c03941SCorey Minyard return 0; 76b2c03941SCorey Minyard 77b2c03941SCorey Minyard ipmi_po_smi_gone(ipmi_ifnum); 78b2c03941SCorey Minyard ipmi_po_new_smi(ifnum_to_use, NULL); 79b2c03941SCorey Minyard return 0; 80b2c03941SCorey Minyard } 81b2c03941SCorey Minyard 82b2c03941SCorey Minyard module_param_call(ifnum_to_use, set_param_ifnum, param_get_int, 83b2c03941SCorey Minyard &ifnum_to_use, 0644); 84b2c03941SCorey Minyard MODULE_PARM_DESC(ifnum_to_use, "The interface number to use for the watchdog " 85b2c03941SCorey Minyard "timer. Setting to -1 defaults to the first registered " 86b2c03941SCorey Minyard "interface"); 87b2c03941SCorey Minyard 883b625943SCorey Minyard /* parameter definition to allow user to flag power cycle */ 89a9d014afSCorey Minyard module_param(poweroff_powercycle, int, 0644); 9021d6c542SCorey Minyard 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."); 913b625943SCorey Minyard 921da177e4SLinus Torvalds /* Stuff from the get device id command. */ 931da177e4SLinus Torvalds static unsigned int mfg_id; 941da177e4SLinus Torvalds static unsigned int prod_id; 951da177e4SLinus Torvalds static unsigned char capabilities; 96168524d6SCorey Minyard static unsigned char ipmi_version; 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds /* We use our own messages for this operation, we don't let the system 991da177e4SLinus Torvalds allocate them, since we may be in a panic situation. The whole 1001da177e4SLinus Torvalds thing is single-threaded, anyway, so multiple messages are not 1011da177e4SLinus Torvalds required. */ 1021da177e4SLinus Torvalds static void dummy_smi_free(struct ipmi_smi_msg *msg) 1031da177e4SLinus Torvalds { 1041da177e4SLinus Torvalds } 1051da177e4SLinus Torvalds static void dummy_recv_free(struct ipmi_recv_msg *msg) 1061da177e4SLinus Torvalds { 1071da177e4SLinus Torvalds } 1081da177e4SLinus Torvalds static struct ipmi_smi_msg halt_smi_msg = 1091da177e4SLinus Torvalds { 1101da177e4SLinus Torvalds .done = dummy_smi_free 1111da177e4SLinus Torvalds }; 1121da177e4SLinus Torvalds static struct ipmi_recv_msg halt_recv_msg = 1131da177e4SLinus Torvalds { 1141da177e4SLinus Torvalds .done = dummy_recv_free 1151da177e4SLinus Torvalds }; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds 1181da177e4SLinus Torvalds /* 1191da177e4SLinus Torvalds * Code to send a message and wait for the reponse. 1201da177e4SLinus Torvalds */ 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds static void receive_handler(struct ipmi_recv_msg *recv_msg, void *handler_data) 1231da177e4SLinus Torvalds { 12477cf3973SCorey Minyard struct completion *comp = recv_msg->user_msg_data; 1251da177e4SLinus Torvalds 12677cf3973SCorey Minyard if (comp) 12777cf3973SCorey Minyard complete(comp); 1281da177e4SLinus Torvalds } 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds static struct ipmi_user_hndl ipmi_poweroff_handler = 1311da177e4SLinus Torvalds { 1321da177e4SLinus Torvalds .ipmi_recv_hndl = receive_handler 1331da177e4SLinus Torvalds }; 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds static int ipmi_request_wait_for_response(ipmi_user_t user, 1371da177e4SLinus Torvalds struct ipmi_addr *addr, 1381da177e4SLinus Torvalds struct kernel_ipmi_msg *send_msg) 1391da177e4SLinus Torvalds { 1401da177e4SLinus Torvalds int rv; 14177cf3973SCorey Minyard struct completion comp; 1421da177e4SLinus Torvalds 14377cf3973SCorey Minyard init_completion(&comp); 1441da177e4SLinus Torvalds 14577cf3973SCorey Minyard rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &comp, 1461da177e4SLinus Torvalds &halt_smi_msg, &halt_recv_msg, 0); 1471da177e4SLinus Torvalds if (rv) 1481da177e4SLinus Torvalds return rv; 1491da177e4SLinus Torvalds 15077cf3973SCorey Minyard wait_for_completion(&comp); 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds return halt_recv_msg.msg.data[0]; 1531da177e4SLinus Torvalds } 1541da177e4SLinus Torvalds 15577cf3973SCorey Minyard /* We are in run-to-completion mode, no completion is desired. */ 1561da177e4SLinus Torvalds static int ipmi_request_in_rc_mode(ipmi_user_t user, 1571da177e4SLinus Torvalds struct ipmi_addr *addr, 1581da177e4SLinus Torvalds struct kernel_ipmi_msg *send_msg) 1591da177e4SLinus Torvalds { 1601da177e4SLinus Torvalds int rv; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, 1631da177e4SLinus Torvalds &halt_smi_msg, &halt_recv_msg, 0); 1641da177e4SLinus Torvalds if (rv) 1651da177e4SLinus Torvalds return rv; 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds return halt_recv_msg.msg.data[0]; 1681da177e4SLinus Torvalds } 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds /* 1711da177e4SLinus Torvalds * ATCA Support 1721da177e4SLinus Torvalds */ 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds #define IPMI_NETFN_ATCA 0x2c 1751da177e4SLinus Torvalds #define IPMI_ATCA_SET_POWER_CMD 0x11 1761da177e4SLinus Torvalds #define IPMI_ATCA_GET_ADDR_INFO_CMD 0x01 1771da177e4SLinus Torvalds #define IPMI_PICMG_ID 0 1781da177e4SLinus Torvalds 1797d8ba966SCorey Minyard #define IPMI_NETFN_OEM 0x2e 1807d8ba966SCorey Minyard #define IPMI_ATCA_PPS_GRACEFUL_RESTART 0x11 1817d8ba966SCorey Minyard #define IPMI_ATCA_PPS_IANA "\x00\x40\x0A" 1827d8ba966SCorey Minyard #define IPMI_MOTOROLA_MANUFACTURER_ID 0x0000A1 1837d8ba966SCorey Minyard #define IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID 0x0051 1847d8ba966SCorey Minyard 1857d8ba966SCorey Minyard static void (*atca_oem_poweroff_hook)(ipmi_user_t user) = NULL; 1867d8ba966SCorey Minyard 1877d8ba966SCorey Minyard static void pps_poweroff_atca (ipmi_user_t user) 1887d8ba966SCorey Minyard { 1897d8ba966SCorey Minyard struct ipmi_system_interface_addr smi_addr; 1907d8ba966SCorey Minyard struct kernel_ipmi_msg send_msg; 1917d8ba966SCorey Minyard int rv; 1927d8ba966SCorey Minyard /* 1937d8ba966SCorey Minyard * Configure IPMI address for local access 1947d8ba966SCorey Minyard */ 1957d8ba966SCorey Minyard smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 1967d8ba966SCorey Minyard smi_addr.channel = IPMI_BMC_CHANNEL; 1977d8ba966SCorey Minyard smi_addr.lun = 0; 1987d8ba966SCorey Minyard 1997d8ba966SCorey Minyard printk(KERN_INFO PFX "PPS powerdown hook used"); 2007d8ba966SCorey Minyard 2017d8ba966SCorey Minyard send_msg.netfn = IPMI_NETFN_OEM; 2027d8ba966SCorey Minyard send_msg.cmd = IPMI_ATCA_PPS_GRACEFUL_RESTART; 2037d8ba966SCorey Minyard send_msg.data = IPMI_ATCA_PPS_IANA; 2047d8ba966SCorey Minyard send_msg.data_len = 3; 2057d8ba966SCorey Minyard rv = ipmi_request_in_rc_mode(user, 2067d8ba966SCorey Minyard (struct ipmi_addr *) &smi_addr, 2077d8ba966SCorey Minyard &send_msg); 2087d8ba966SCorey Minyard if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { 2097d8ba966SCorey Minyard printk(KERN_ERR PFX "Unable to send ATCA ," 2107d8ba966SCorey Minyard " IPMI error 0x%x\n", rv); 2117d8ba966SCorey Minyard } 2127d8ba966SCorey Minyard return; 2137d8ba966SCorey Minyard } 2147d8ba966SCorey Minyard 2151da177e4SLinus Torvalds static int ipmi_atca_detect (ipmi_user_t user) 2161da177e4SLinus Torvalds { 2171da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 2181da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 2191da177e4SLinus Torvalds int rv; 2201da177e4SLinus Torvalds unsigned char data[1]; 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds /* 2231da177e4SLinus Torvalds * Configure IPMI address for local access 2241da177e4SLinus Torvalds */ 2251da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 2261da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 2271da177e4SLinus Torvalds smi_addr.lun = 0; 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds /* 2301da177e4SLinus Torvalds * Use get address info to check and see if we are ATCA 2311da177e4SLinus Torvalds */ 2321da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_ATCA; 2331da177e4SLinus Torvalds send_msg.cmd = IPMI_ATCA_GET_ADDR_INFO_CMD; 2341da177e4SLinus Torvalds data[0] = IPMI_PICMG_ID; 2351da177e4SLinus Torvalds send_msg.data = data; 2361da177e4SLinus Torvalds send_msg.data_len = sizeof(data); 2371da177e4SLinus Torvalds rv = ipmi_request_wait_for_response(user, 2381da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 2391da177e4SLinus Torvalds &send_msg); 2407d8ba966SCorey Minyard 2417d8ba966SCorey Minyard printk(KERN_INFO PFX "ATCA Detect mfg 0x%X prod 0x%X\n", mfg_id, prod_id); 2427d8ba966SCorey Minyard if((mfg_id == IPMI_MOTOROLA_MANUFACTURER_ID) 2437d8ba966SCorey Minyard && (prod_id == IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID)) { 2447d8ba966SCorey Minyard printk(KERN_INFO PFX "Installing Pigeon Point Systems Poweroff Hook\n"); 2457d8ba966SCorey Minyard atca_oem_poweroff_hook = pps_poweroff_atca; 2467d8ba966SCorey Minyard } 2471da177e4SLinus Torvalds return !rv; 2481da177e4SLinus Torvalds } 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds static void ipmi_poweroff_atca (ipmi_user_t user) 2511da177e4SLinus Torvalds { 2521da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 2531da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 2541da177e4SLinus Torvalds int rv; 2551da177e4SLinus Torvalds unsigned char data[4]; 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds /* 2581da177e4SLinus Torvalds * Configure IPMI address for local access 2591da177e4SLinus Torvalds */ 2601da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 2611da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 2621da177e4SLinus Torvalds smi_addr.lun = 0; 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds printk(KERN_INFO PFX "Powering down via ATCA power command\n"); 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds /* 2671da177e4SLinus Torvalds * Power down 2681da177e4SLinus Torvalds */ 2691da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_ATCA; 2701da177e4SLinus Torvalds send_msg.cmd = IPMI_ATCA_SET_POWER_CMD; 2711da177e4SLinus Torvalds data[0] = IPMI_PICMG_ID; 2721da177e4SLinus Torvalds data[1] = 0; /* FRU id */ 2731da177e4SLinus Torvalds data[2] = 0; /* Power Level */ 2741da177e4SLinus Torvalds data[3] = 0; /* Don't change saved presets */ 2751da177e4SLinus Torvalds send_msg.data = data; 2761da177e4SLinus Torvalds send_msg.data_len = sizeof (data); 2771da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 2781da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 2791da177e4SLinus Torvalds &send_msg); 2807d8ba966SCorey Minyard /** At this point, the system may be shutting down, and most 2817d8ba966SCorey Minyard ** serial drivers (if used) will have interrupts turned off 2827d8ba966SCorey Minyard ** it may be better to ignore IPMI_UNKNOWN_ERR_COMPLETION_CODE 2837d8ba966SCorey Minyard ** return code 2847d8ba966SCorey Minyard **/ 2857d8ba966SCorey Minyard if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { 2861da177e4SLinus Torvalds printk(KERN_ERR PFX "Unable to send ATCA powerdown message," 2871da177e4SLinus Torvalds " IPMI error 0x%x\n", rv); 2881da177e4SLinus Torvalds goto out; 2891da177e4SLinus Torvalds } 2901da177e4SLinus Torvalds 2917d8ba966SCorey Minyard if(atca_oem_poweroff_hook) 2927d8ba966SCorey Minyard return atca_oem_poweroff_hook(user); 2931da177e4SLinus Torvalds out: 2941da177e4SLinus Torvalds return; 2951da177e4SLinus Torvalds } 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds /* 2981da177e4SLinus Torvalds * CPI1 Support 2991da177e4SLinus Torvalds */ 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds #define IPMI_NETFN_OEM_1 0xf8 3021da177e4SLinus Torvalds #define OEM_GRP_CMD_SET_RESET_STATE 0x84 3031da177e4SLinus Torvalds #define OEM_GRP_CMD_SET_POWER_STATE 0x82 3041da177e4SLinus Torvalds #define IPMI_NETFN_OEM_8 0xf8 3051da177e4SLinus Torvalds #define OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL 0x80 3061da177e4SLinus Torvalds #define OEM_GRP_CMD_GET_SLOT_GA 0xa3 3071da177e4SLinus Torvalds #define IPMI_NETFN_SENSOR_EVT 0x10 3081da177e4SLinus Torvalds #define IPMI_CMD_GET_EVENT_RECEIVER 0x01 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds #define IPMI_CPI1_PRODUCT_ID 0x000157 3111da177e4SLinus Torvalds #define IPMI_CPI1_MANUFACTURER_ID 0x0108 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds static int ipmi_cpi1_detect (ipmi_user_t user) 3141da177e4SLinus Torvalds { 3151da177e4SLinus Torvalds return ((mfg_id == IPMI_CPI1_MANUFACTURER_ID) 3161da177e4SLinus Torvalds && (prod_id == IPMI_CPI1_PRODUCT_ID)); 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds static void ipmi_poweroff_cpi1 (ipmi_user_t user) 3201da177e4SLinus Torvalds { 3211da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 3221da177e4SLinus Torvalds struct ipmi_ipmb_addr ipmb_addr; 3231da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 3241da177e4SLinus Torvalds int rv; 3251da177e4SLinus Torvalds unsigned char data[1]; 3261da177e4SLinus Torvalds int slot; 3271da177e4SLinus Torvalds unsigned char hotswap_ipmb; 3281da177e4SLinus Torvalds unsigned char aer_addr; 3291da177e4SLinus Torvalds unsigned char aer_lun; 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvalds /* 3321da177e4SLinus Torvalds * Configure IPMI address for local access 3331da177e4SLinus Torvalds */ 3341da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 3351da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 3361da177e4SLinus Torvalds smi_addr.lun = 0; 3371da177e4SLinus Torvalds 3381da177e4SLinus Torvalds printk(KERN_INFO PFX "Powering down via CPI1 power command\n"); 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds /* 3411da177e4SLinus Torvalds * Get IPMI ipmb address 3421da177e4SLinus Torvalds */ 3431da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; 3441da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_GET_SLOT_GA; 3451da177e4SLinus Torvalds send_msg.data = NULL; 3461da177e4SLinus Torvalds send_msg.data_len = 0; 3471da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 3481da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 3491da177e4SLinus Torvalds &send_msg); 3501da177e4SLinus Torvalds if (rv) 3511da177e4SLinus Torvalds goto out; 3521da177e4SLinus Torvalds slot = halt_recv_msg.msg.data[1]; 3531da177e4SLinus Torvalds hotswap_ipmb = (slot > 9) ? (0xb0 + 2 * slot) : (0xae + 2 * slot); 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds /* 3561da177e4SLinus Torvalds * Get active event receiver 3571da177e4SLinus Torvalds */ 3581da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_SENSOR_EVT >> 2; 3591da177e4SLinus Torvalds send_msg.cmd = IPMI_CMD_GET_EVENT_RECEIVER; 3601da177e4SLinus Torvalds send_msg.data = NULL; 3611da177e4SLinus Torvalds send_msg.data_len = 0; 3621da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 3631da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 3641da177e4SLinus Torvalds &send_msg); 3651da177e4SLinus Torvalds if (rv) 3661da177e4SLinus Torvalds goto out; 3671da177e4SLinus Torvalds aer_addr = halt_recv_msg.msg.data[1]; 3681da177e4SLinus Torvalds aer_lun = halt_recv_msg.msg.data[2]; 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds /* 3711da177e4SLinus Torvalds * Setup IPMB address target instead of local target 3721da177e4SLinus Torvalds */ 3731da177e4SLinus Torvalds ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; 3741da177e4SLinus Torvalds ipmb_addr.channel = 0; 3751da177e4SLinus Torvalds ipmb_addr.slave_addr = aer_addr; 3761da177e4SLinus Torvalds ipmb_addr.lun = aer_lun; 3771da177e4SLinus Torvalds 3781da177e4SLinus Torvalds /* 3791da177e4SLinus Torvalds * Send request hotswap control to remove blade from dpv 3801da177e4SLinus Torvalds */ 3811da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; 3821da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL; 3831da177e4SLinus Torvalds send_msg.data = &hotswap_ipmb; 3841da177e4SLinus Torvalds send_msg.data_len = 1; 3851da177e4SLinus Torvalds ipmi_request_in_rc_mode(user, 3861da177e4SLinus Torvalds (struct ipmi_addr *) &ipmb_addr, 3871da177e4SLinus Torvalds &send_msg); 3881da177e4SLinus Torvalds 3891da177e4SLinus Torvalds /* 3901da177e4SLinus Torvalds * Set reset asserted 3911da177e4SLinus Torvalds */ 3921da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; 3931da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_SET_RESET_STATE; 3941da177e4SLinus Torvalds send_msg.data = data; 3951da177e4SLinus Torvalds data[0] = 1; /* Reset asserted state */ 3961da177e4SLinus Torvalds send_msg.data_len = 1; 3971da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 3981da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 3991da177e4SLinus Torvalds &send_msg); 4001da177e4SLinus Torvalds if (rv) 4011da177e4SLinus Torvalds goto out; 4021da177e4SLinus Torvalds 4031da177e4SLinus Torvalds /* 4041da177e4SLinus Torvalds * Power down 4051da177e4SLinus Torvalds */ 4061da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; 4071da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_SET_POWER_STATE; 4081da177e4SLinus Torvalds send_msg.data = data; 4091da177e4SLinus Torvalds data[0] = 1; /* Power down state */ 4101da177e4SLinus Torvalds send_msg.data_len = 1; 4111da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 4121da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 4131da177e4SLinus Torvalds &send_msg); 4141da177e4SLinus Torvalds if (rv) 4151da177e4SLinus Torvalds goto out; 4161da177e4SLinus Torvalds 4171da177e4SLinus Torvalds out: 4181da177e4SLinus Torvalds return; 4191da177e4SLinus Torvalds } 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds /* 422168524d6SCorey Minyard * ipmi_dell_chassis_detect() 423168524d6SCorey Minyard * Dell systems with IPMI < 1.5 don't set the chassis capability bit 424168524d6SCorey Minyard * but they can handle a chassis poweroff or powercycle command. 425168524d6SCorey Minyard */ 426168524d6SCorey Minyard 427168524d6SCorey Minyard #define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00} 428168524d6SCorey Minyard static int ipmi_dell_chassis_detect (ipmi_user_t user) 429168524d6SCorey Minyard { 430168524d6SCorey Minyard const char ipmi_version_major = ipmi_version & 0xF; 431168524d6SCorey Minyard const char ipmi_version_minor = (ipmi_version >> 4) & 0xF; 432168524d6SCorey Minyard const char mfr[3] = DELL_IANA_MFR_ID; 433168524d6SCorey Minyard if (!memcmp(mfr, &mfg_id, sizeof(mfr)) && 434168524d6SCorey Minyard ipmi_version_major <= 1 && 435168524d6SCorey Minyard ipmi_version_minor < 5) 436168524d6SCorey Minyard return 1; 437168524d6SCorey Minyard return 0; 438168524d6SCorey Minyard } 439168524d6SCorey Minyard 440168524d6SCorey Minyard /* 4411da177e4SLinus Torvalds * Standard chassis support 4421da177e4SLinus Torvalds */ 4431da177e4SLinus Torvalds 4441da177e4SLinus Torvalds #define IPMI_NETFN_CHASSIS_REQUEST 0 4451da177e4SLinus Torvalds #define IPMI_CHASSIS_CONTROL_CMD 0x02 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds static int ipmi_chassis_detect (ipmi_user_t user) 4481da177e4SLinus Torvalds { 4491da177e4SLinus Torvalds /* Chassis support, use it. */ 4501da177e4SLinus Torvalds return (capabilities & 0x80); 4511da177e4SLinus Torvalds } 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds static void ipmi_poweroff_chassis (ipmi_user_t user) 4541da177e4SLinus Torvalds { 4551da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 4561da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 4571da177e4SLinus Torvalds int rv; 4581da177e4SLinus Torvalds unsigned char data[1]; 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds /* 4611da177e4SLinus Torvalds * Configure IPMI address for local access 4621da177e4SLinus Torvalds */ 4631da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 4641da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 4651da177e4SLinus Torvalds smi_addr.lun = 0; 4661da177e4SLinus Torvalds 4673b625943SCorey Minyard powercyclefailed: 4683b625943SCorey Minyard printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n", 4698c702e16SCorey Minyard (poweroff_powercycle ? "cycle" : "down")); 4701da177e4SLinus Torvalds 4711da177e4SLinus Torvalds /* 4721da177e4SLinus Torvalds * Power down 4731da177e4SLinus Torvalds */ 4741da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_CHASSIS_REQUEST; 4751da177e4SLinus Torvalds send_msg.cmd = IPMI_CHASSIS_CONTROL_CMD; 4768c702e16SCorey Minyard if (poweroff_powercycle) 4778c702e16SCorey Minyard data[0] = IPMI_CHASSIS_POWER_CYCLE; 4788c702e16SCorey Minyard else 4798c702e16SCorey Minyard data[0] = IPMI_CHASSIS_POWER_DOWN; 4801da177e4SLinus Torvalds send_msg.data = data; 4811da177e4SLinus Torvalds send_msg.data_len = sizeof(data); 4821da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 4831da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 4841da177e4SLinus Torvalds &send_msg); 4851da177e4SLinus Torvalds if (rv) { 4868c702e16SCorey Minyard if (poweroff_powercycle) { 4873b625943SCorey Minyard /* power cycle failed, default to power down */ 4883b625943SCorey Minyard printk(KERN_ERR PFX "Unable to send chassis power " \ 4893b625943SCorey Minyard "cycle message, IPMI error 0x%x\n", rv); 4908c702e16SCorey Minyard poweroff_powercycle = 0; 4913b625943SCorey Minyard goto powercyclefailed; 4928c702e16SCorey Minyard } 4933b625943SCorey Minyard 4943b625943SCorey Minyard printk(KERN_ERR PFX "Unable to send chassis power " \ 4953b625943SCorey Minyard "down message, IPMI error 0x%x\n", rv); 4963b625943SCorey Minyard } 4971da177e4SLinus Torvalds } 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds 5001da177e4SLinus Torvalds /* Table of possible power off functions. */ 5011da177e4SLinus Torvalds struct poweroff_function { 5021da177e4SLinus Torvalds char *platform_type; 5031da177e4SLinus Torvalds int (*detect)(ipmi_user_t user); 5041da177e4SLinus Torvalds void (*poweroff_func)(ipmi_user_t user); 5051da177e4SLinus Torvalds }; 5061da177e4SLinus Torvalds 5071da177e4SLinus Torvalds static struct poweroff_function poweroff_functions[] = { 5081da177e4SLinus Torvalds { .platform_type = "ATCA", 5091da177e4SLinus Torvalds .detect = ipmi_atca_detect, 5101da177e4SLinus Torvalds .poweroff_func = ipmi_poweroff_atca }, 5111da177e4SLinus Torvalds { .platform_type = "CPI1", 5121da177e4SLinus Torvalds .detect = ipmi_cpi1_detect, 5131da177e4SLinus Torvalds .poweroff_func = ipmi_poweroff_cpi1 }, 514168524d6SCorey Minyard { .platform_type = "chassis", 515168524d6SCorey Minyard .detect = ipmi_dell_chassis_detect, 516168524d6SCorey Minyard .poweroff_func = ipmi_poweroff_chassis }, 5171da177e4SLinus Torvalds /* Chassis should generally be last, other things should override 5181da177e4SLinus Torvalds it. */ 5191da177e4SLinus Torvalds { .platform_type = "chassis", 5201da177e4SLinus Torvalds .detect = ipmi_chassis_detect, 5211da177e4SLinus Torvalds .poweroff_func = ipmi_poweroff_chassis }, 5221da177e4SLinus Torvalds }; 5231da177e4SLinus Torvalds #define NUM_PO_FUNCS (sizeof(poweroff_functions) \ 5241da177e4SLinus Torvalds / sizeof(struct poweroff_function)) 5251da177e4SLinus Torvalds 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds /* Called on a powerdown request. */ 5281da177e4SLinus Torvalds static void ipmi_poweroff_function (void) 5291da177e4SLinus Torvalds { 5301da177e4SLinus Torvalds if (!ready) 5311da177e4SLinus Torvalds return; 5321da177e4SLinus Torvalds 5331da177e4SLinus Torvalds /* Use run-to-completion mode, since interrupts may be off. */ 5341da177e4SLinus Torvalds ipmi_user_set_run_to_completion(ipmi_user, 1); 5351da177e4SLinus Torvalds specific_poweroff_func(ipmi_user); 5361da177e4SLinus Torvalds ipmi_user_set_run_to_completion(ipmi_user, 0); 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds 5391da177e4SLinus Torvalds /* Wait for an IPMI interface to be installed, the first one installed 5401da177e4SLinus Torvalds will be grabbed by this code and used to perform the powerdown. */ 54150c812b2SCorey Minyard static void ipmi_po_new_smi(int if_num, struct device *device) 5421da177e4SLinus Torvalds { 5431da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 5441da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 5451da177e4SLinus Torvalds int rv; 5461da177e4SLinus Torvalds int i; 5471da177e4SLinus Torvalds 5481da177e4SLinus Torvalds if (ready) 5491da177e4SLinus Torvalds return; 5501da177e4SLinus Torvalds 551b2c03941SCorey Minyard if ((ifnum_to_use >= 0) && (ifnum_to_use != if_num)) 552b2c03941SCorey Minyard return; 553b2c03941SCorey Minyard 5543b625943SCorey Minyard rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL, 5553b625943SCorey Minyard &ipmi_user); 5561da177e4SLinus Torvalds if (rv) { 5571da177e4SLinus Torvalds printk(KERN_ERR PFX "could not create IPMI user, error %d\n", 5581da177e4SLinus Torvalds rv); 5591da177e4SLinus Torvalds return; 5601da177e4SLinus Torvalds } 5611da177e4SLinus Torvalds 562b2c03941SCorey Minyard ipmi_ifnum = if_num; 563b2c03941SCorey Minyard 5641da177e4SLinus Torvalds /* 5651da177e4SLinus Torvalds * Do a get device ide and store some results, since this is 5661da177e4SLinus Torvalds * used by several functions. 5671da177e4SLinus Torvalds */ 5681da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 5691da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 5701da177e4SLinus Torvalds smi_addr.lun = 0; 5711da177e4SLinus Torvalds 5721da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_APP_REQUEST; 5731da177e4SLinus Torvalds send_msg.cmd = IPMI_GET_DEVICE_ID_CMD; 5741da177e4SLinus Torvalds send_msg.data = NULL; 5751da177e4SLinus Torvalds send_msg.data_len = 0; 5761da177e4SLinus Torvalds rv = ipmi_request_wait_for_response(ipmi_user, 5771da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 5781da177e4SLinus Torvalds &send_msg); 5791da177e4SLinus Torvalds if (rv) { 5801da177e4SLinus Torvalds printk(KERN_ERR PFX "Unable to send IPMI get device id info," 5811da177e4SLinus Torvalds " IPMI error 0x%x\n", rv); 5821da177e4SLinus Torvalds goto out_err; 5831da177e4SLinus Torvalds } 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds if (halt_recv_msg.msg.data_len < 12) { 5861da177e4SLinus Torvalds printk(KERN_ERR PFX "(chassis) IPMI get device id info too," 5871da177e4SLinus Torvalds " short, was %d bytes, needed %d bytes\n", 5881da177e4SLinus Torvalds halt_recv_msg.msg.data_len, 12); 5891da177e4SLinus Torvalds goto out_err; 5901da177e4SLinus Torvalds } 5911da177e4SLinus Torvalds 5921da177e4SLinus Torvalds mfg_id = (halt_recv_msg.msg.data[7] 5931da177e4SLinus Torvalds | (halt_recv_msg.msg.data[8] << 8) 5941da177e4SLinus Torvalds | (halt_recv_msg.msg.data[9] << 16)); 5951da177e4SLinus Torvalds prod_id = (halt_recv_msg.msg.data[10] 5961da177e4SLinus Torvalds | (halt_recv_msg.msg.data[11] << 8)); 5971da177e4SLinus Torvalds capabilities = halt_recv_msg.msg.data[6]; 598168524d6SCorey Minyard ipmi_version = halt_recv_msg.msg.data[5]; 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvalds /* Scan for a poweroff method */ 6021da177e4SLinus Torvalds for (i = 0; i < NUM_PO_FUNCS; i++) { 6031da177e4SLinus Torvalds if (poweroff_functions[i].detect(ipmi_user)) 6041da177e4SLinus Torvalds goto found; 6051da177e4SLinus Torvalds } 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds out_err: 6081da177e4SLinus Torvalds printk(KERN_ERR PFX "Unable to find a poweroff function that" 6091da177e4SLinus Torvalds " will work, giving up\n"); 6101da177e4SLinus Torvalds ipmi_destroy_user(ipmi_user); 6111da177e4SLinus Torvalds return; 6121da177e4SLinus Torvalds 6131da177e4SLinus Torvalds found: 6141da177e4SLinus Torvalds printk(KERN_INFO PFX "Found a %s style poweroff function\n", 6151da177e4SLinus Torvalds poweroff_functions[i].platform_type); 6161da177e4SLinus Torvalds specific_poweroff_func = poweroff_functions[i].poweroff_func; 6171da177e4SLinus Torvalds old_poweroff_func = pm_power_off; 6181da177e4SLinus Torvalds pm_power_off = ipmi_poweroff_function; 6191da177e4SLinus Torvalds ready = 1; 6201da177e4SLinus Torvalds } 6211da177e4SLinus Torvalds 6221da177e4SLinus Torvalds static void ipmi_po_smi_gone(int if_num) 6231da177e4SLinus Torvalds { 624b2c03941SCorey Minyard if (!ready) 625b2c03941SCorey Minyard return; 626b2c03941SCorey Minyard 627b2c03941SCorey Minyard if (ipmi_ifnum != if_num) 628b2c03941SCorey Minyard return; 629b2c03941SCorey Minyard 630b2c03941SCorey Minyard ready = 0; 631b2c03941SCorey Minyard ipmi_destroy_user(ipmi_user); 632b2c03941SCorey Minyard pm_power_off = old_poweroff_func; 6331da177e4SLinus Torvalds } 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds static struct ipmi_smi_watcher smi_watcher = 6361da177e4SLinus Torvalds { 6371da177e4SLinus Torvalds .owner = THIS_MODULE, 6381da177e4SLinus Torvalds .new_smi = ipmi_po_new_smi, 6391da177e4SLinus Torvalds .smi_gone = ipmi_po_smi_gone 6401da177e4SLinus Torvalds }; 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds 6433b625943SCorey Minyard #ifdef CONFIG_PROC_FS 6448c702e16SCorey Minyard #include <linux/sysctl.h> 6453b625943SCorey Minyard 6468c702e16SCorey Minyard static ctl_table ipmi_table[] = { 6478c702e16SCorey Minyard { .ctl_name = DEV_IPMI_POWEROFF_POWERCYCLE, 6488c702e16SCorey Minyard .procname = "poweroff_powercycle", 6498c702e16SCorey Minyard .data = &poweroff_powercycle, 6508c702e16SCorey Minyard .maxlen = sizeof(poweroff_powercycle), 6518c702e16SCorey Minyard .mode = 0644, 6528c702e16SCorey Minyard .proc_handler = &proc_dointvec }, 6538c702e16SCorey Minyard { } 6548c702e16SCorey Minyard }; 6553b625943SCorey Minyard 6568c702e16SCorey Minyard static ctl_table ipmi_dir_table[] = { 6578c702e16SCorey Minyard { .ctl_name = DEV_IPMI, 6588c702e16SCorey Minyard .procname = "ipmi", 6598c702e16SCorey Minyard .mode = 0555, 6608c702e16SCorey Minyard .child = ipmi_table }, 6618c702e16SCorey Minyard { } 6628c702e16SCorey Minyard }; 6633b625943SCorey Minyard 6648c702e16SCorey Minyard static ctl_table ipmi_root_table[] = { 6658c702e16SCorey Minyard { .ctl_name = CTL_DEV, 6668c702e16SCorey Minyard .procname = "dev", 6678c702e16SCorey Minyard .mode = 0555, 6688c702e16SCorey Minyard .child = ipmi_dir_table }, 6698c702e16SCorey Minyard { } 6708c702e16SCorey Minyard }; 6713b625943SCorey Minyard 6728c702e16SCorey Minyard static struct ctl_table_header *ipmi_table_header; 6733b625943SCorey Minyard #endif /* CONFIG_PROC_FS */ 6743b625943SCorey Minyard 6751da177e4SLinus Torvalds /* 6761da177e4SLinus Torvalds * Startup and shutdown functions. 6771da177e4SLinus Torvalds */ 6781da177e4SLinus Torvalds static int ipmi_poweroff_init (void) 6791da177e4SLinus Torvalds { 6801da177e4SLinus Torvalds int rv; 6811da177e4SLinus Torvalds 6821da177e4SLinus Torvalds printk ("Copyright (C) 2004 MontaVista Software -" 6831fdd75bdSCorey Minyard " IPMI Powerdown via sys_reboot.\n"); 6841da177e4SLinus Torvalds 6858c702e16SCorey Minyard if (poweroff_powercycle) 6863b625943SCorey Minyard printk(KERN_INFO PFX "Power cycle is enabled.\n"); 6871da177e4SLinus Torvalds 6888c702e16SCorey Minyard #ifdef CONFIG_PROC_FS 6898c702e16SCorey Minyard ipmi_table_header = register_sysctl_table(ipmi_root_table, 1); 6908c702e16SCorey Minyard if (!ipmi_table_header) { 6918c702e16SCorey Minyard printk(KERN_ERR PFX "Unable to register powercycle sysctl\n"); 6928c702e16SCorey Minyard rv = -ENOMEM; 6938c702e16SCorey Minyard goto out_err; 6943b625943SCorey Minyard } 6958c702e16SCorey Minyard #endif 6963b625943SCorey Minyard 6973b625943SCorey Minyard rv = ipmi_smi_watcher_register(&smi_watcher); 698be4f1bb2SAdrian Bunk 699be4f1bb2SAdrian Bunk #ifdef CONFIG_PROC_FS 7003b625943SCorey Minyard if (rv) { 7018c702e16SCorey Minyard unregister_sysctl_table(ipmi_table_header); 7023b625943SCorey Minyard printk(KERN_ERR PFX "Unable to register SMI watcher: %d\n", rv); 7033b625943SCorey Minyard goto out_err; 7043b625943SCorey Minyard } 705be4f1bb2SAdrian Bunk #endif 7063b625943SCorey Minyard 7073b625943SCorey Minyard out_err: 7081da177e4SLinus Torvalds return rv; 7091da177e4SLinus Torvalds } 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvalds #ifdef MODULE 7121da177e4SLinus Torvalds static __exit void ipmi_poweroff_cleanup(void) 7131da177e4SLinus Torvalds { 7141da177e4SLinus Torvalds int rv; 7151da177e4SLinus Torvalds 7163b625943SCorey Minyard #ifdef CONFIG_PROC_FS 7178c702e16SCorey Minyard unregister_sysctl_table(ipmi_table_header); 7183b625943SCorey Minyard #endif 7193b625943SCorey Minyard 7201da177e4SLinus Torvalds ipmi_smi_watcher_unregister(&smi_watcher); 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds if (ready) { 7231da177e4SLinus Torvalds rv = ipmi_destroy_user(ipmi_user); 7241da177e4SLinus Torvalds if (rv) 7251da177e4SLinus Torvalds printk(KERN_ERR PFX "could not cleanup the IPMI" 7261da177e4SLinus Torvalds " user: 0x%x\n", rv); 7271da177e4SLinus Torvalds pm_power_off = old_poweroff_func; 7281da177e4SLinus Torvalds } 7291da177e4SLinus Torvalds } 7301da177e4SLinus Torvalds module_exit(ipmi_poweroff_cleanup); 7311da177e4SLinus Torvalds #endif 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds module_init(ipmi_poweroff_init); 7341da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 7351fdd75bdSCorey Minyard MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); 7361fdd75bdSCorey Minyard MODULE_DESCRIPTION("IPMI Poweroff extension to sys_reboot"); 737