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 */ 3477cf3973SCorey Minyard #include <linux/config.h> 351da177e4SLinus Torvalds #include <linux/module.h> 363b625943SCorey Minyard #include <linux/moduleparam.h> 373b625943SCorey Minyard #include <linux/proc_fs.h> 381da177e4SLinus Torvalds #include <linux/string.h> 3977cf3973SCorey Minyard #include <linux/completion.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 461da177e4SLinus Torvalds /* Where to we insert our poweroff function? */ 471da177e4SLinus Torvalds extern void (*pm_power_off)(void); 481da177e4SLinus Torvalds 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 573b625943SCorey Minyard /* parameter definition to allow user to flag power cycle */ 58a9d014afSCorey Minyard module_param(poweroff_powercycle, int, 0644); 5921d6c542SCorey 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."); 603b625943SCorey Minyard 611da177e4SLinus Torvalds /* Stuff from the get device id command. */ 621da177e4SLinus Torvalds static unsigned int mfg_id; 631da177e4SLinus Torvalds static unsigned int prod_id; 641da177e4SLinus Torvalds static unsigned char capabilities; 65168524d6SCorey Minyard static unsigned char ipmi_version; 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds /* We use our own messages for this operation, we don't let the system 681da177e4SLinus Torvalds allocate them, since we may be in a panic situation. The whole 691da177e4SLinus Torvalds thing is single-threaded, anyway, so multiple messages are not 701da177e4SLinus Torvalds required. */ 711da177e4SLinus Torvalds static void dummy_smi_free(struct ipmi_smi_msg *msg) 721da177e4SLinus Torvalds { 731da177e4SLinus Torvalds } 741da177e4SLinus Torvalds static void dummy_recv_free(struct ipmi_recv_msg *msg) 751da177e4SLinus Torvalds { 761da177e4SLinus Torvalds } 771da177e4SLinus Torvalds static struct ipmi_smi_msg halt_smi_msg = 781da177e4SLinus Torvalds { 791da177e4SLinus Torvalds .done = dummy_smi_free 801da177e4SLinus Torvalds }; 811da177e4SLinus Torvalds static struct ipmi_recv_msg halt_recv_msg = 821da177e4SLinus Torvalds { 831da177e4SLinus Torvalds .done = dummy_recv_free 841da177e4SLinus Torvalds }; 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds /* 881da177e4SLinus Torvalds * Code to send a message and wait for the reponse. 891da177e4SLinus Torvalds */ 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds static void receive_handler(struct ipmi_recv_msg *recv_msg, void *handler_data) 921da177e4SLinus Torvalds { 9377cf3973SCorey Minyard struct completion *comp = recv_msg->user_msg_data; 941da177e4SLinus Torvalds 9577cf3973SCorey Minyard if (comp) 9677cf3973SCorey Minyard complete(comp); 971da177e4SLinus Torvalds } 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds static struct ipmi_user_hndl ipmi_poweroff_handler = 1001da177e4SLinus Torvalds { 1011da177e4SLinus Torvalds .ipmi_recv_hndl = receive_handler 1021da177e4SLinus Torvalds }; 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds static int ipmi_request_wait_for_response(ipmi_user_t user, 1061da177e4SLinus Torvalds struct ipmi_addr *addr, 1071da177e4SLinus Torvalds struct kernel_ipmi_msg *send_msg) 1081da177e4SLinus Torvalds { 1091da177e4SLinus Torvalds int rv; 11077cf3973SCorey Minyard struct completion comp; 1111da177e4SLinus Torvalds 11277cf3973SCorey Minyard init_completion(&comp); 1131da177e4SLinus Torvalds 11477cf3973SCorey Minyard rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &comp, 1151da177e4SLinus Torvalds &halt_smi_msg, &halt_recv_msg, 0); 1161da177e4SLinus Torvalds if (rv) 1171da177e4SLinus Torvalds return rv; 1181da177e4SLinus Torvalds 11977cf3973SCorey Minyard wait_for_completion(&comp); 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds return halt_recv_msg.msg.data[0]; 1221da177e4SLinus Torvalds } 1231da177e4SLinus Torvalds 12477cf3973SCorey Minyard /* We are in run-to-completion mode, no completion is desired. */ 1251da177e4SLinus Torvalds static int ipmi_request_in_rc_mode(ipmi_user_t user, 1261da177e4SLinus Torvalds struct ipmi_addr *addr, 1271da177e4SLinus Torvalds struct kernel_ipmi_msg *send_msg) 1281da177e4SLinus Torvalds { 1291da177e4SLinus Torvalds int rv; 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, 1321da177e4SLinus Torvalds &halt_smi_msg, &halt_recv_msg, 0); 1331da177e4SLinus Torvalds if (rv) 1341da177e4SLinus Torvalds return rv; 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds return halt_recv_msg.msg.data[0]; 1371da177e4SLinus Torvalds } 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds /* 1401da177e4SLinus Torvalds * ATCA Support 1411da177e4SLinus Torvalds */ 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds #define IPMI_NETFN_ATCA 0x2c 1441da177e4SLinus Torvalds #define IPMI_ATCA_SET_POWER_CMD 0x11 1451da177e4SLinus Torvalds #define IPMI_ATCA_GET_ADDR_INFO_CMD 0x01 1461da177e4SLinus Torvalds #define IPMI_PICMG_ID 0 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds static int ipmi_atca_detect (ipmi_user_t user) 1491da177e4SLinus Torvalds { 1501da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 1511da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 1521da177e4SLinus Torvalds int rv; 1531da177e4SLinus Torvalds unsigned char data[1]; 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds /* 1561da177e4SLinus Torvalds * Configure IPMI address for local access 1571da177e4SLinus Torvalds */ 1581da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 1591da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 1601da177e4SLinus Torvalds smi_addr.lun = 0; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds /* 1631da177e4SLinus Torvalds * Use get address info to check and see if we are ATCA 1641da177e4SLinus Torvalds */ 1651da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_ATCA; 1661da177e4SLinus Torvalds send_msg.cmd = IPMI_ATCA_GET_ADDR_INFO_CMD; 1671da177e4SLinus Torvalds data[0] = IPMI_PICMG_ID; 1681da177e4SLinus Torvalds send_msg.data = data; 1691da177e4SLinus Torvalds send_msg.data_len = sizeof(data); 1701da177e4SLinus Torvalds rv = ipmi_request_wait_for_response(user, 1711da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 1721da177e4SLinus Torvalds &send_msg); 1731da177e4SLinus Torvalds return !rv; 1741da177e4SLinus Torvalds } 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds static void ipmi_poweroff_atca (ipmi_user_t user) 1771da177e4SLinus Torvalds { 1781da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 1791da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 1801da177e4SLinus Torvalds int rv; 1811da177e4SLinus Torvalds unsigned char data[4]; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* 1841da177e4SLinus Torvalds * Configure IPMI address for local access 1851da177e4SLinus Torvalds */ 1861da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 1871da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 1881da177e4SLinus Torvalds smi_addr.lun = 0; 1891da177e4SLinus Torvalds 1901da177e4SLinus Torvalds printk(KERN_INFO PFX "Powering down via ATCA power command\n"); 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds /* 1931da177e4SLinus Torvalds * Power down 1941da177e4SLinus Torvalds */ 1951da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_ATCA; 1961da177e4SLinus Torvalds send_msg.cmd = IPMI_ATCA_SET_POWER_CMD; 1971da177e4SLinus Torvalds data[0] = IPMI_PICMG_ID; 1981da177e4SLinus Torvalds data[1] = 0; /* FRU id */ 1991da177e4SLinus Torvalds data[2] = 0; /* Power Level */ 2001da177e4SLinus Torvalds data[3] = 0; /* Don't change saved presets */ 2011da177e4SLinus Torvalds send_msg.data = data; 2021da177e4SLinus Torvalds send_msg.data_len = sizeof (data); 2031da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 2041da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 2051da177e4SLinus Torvalds &send_msg); 2061da177e4SLinus Torvalds if (rv) { 2071da177e4SLinus Torvalds printk(KERN_ERR PFX "Unable to send ATCA powerdown message," 2081da177e4SLinus Torvalds " IPMI error 0x%x\n", rv); 2091da177e4SLinus Torvalds goto out; 2101da177e4SLinus Torvalds } 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds out: 2131da177e4SLinus Torvalds return; 2141da177e4SLinus Torvalds } 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds /* 2171da177e4SLinus Torvalds * CPI1 Support 2181da177e4SLinus Torvalds */ 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds #define IPMI_NETFN_OEM_1 0xf8 2211da177e4SLinus Torvalds #define OEM_GRP_CMD_SET_RESET_STATE 0x84 2221da177e4SLinus Torvalds #define OEM_GRP_CMD_SET_POWER_STATE 0x82 2231da177e4SLinus Torvalds #define IPMI_NETFN_OEM_8 0xf8 2241da177e4SLinus Torvalds #define OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL 0x80 2251da177e4SLinus Torvalds #define OEM_GRP_CMD_GET_SLOT_GA 0xa3 2261da177e4SLinus Torvalds #define IPMI_NETFN_SENSOR_EVT 0x10 2271da177e4SLinus Torvalds #define IPMI_CMD_GET_EVENT_RECEIVER 0x01 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds #define IPMI_CPI1_PRODUCT_ID 0x000157 2301da177e4SLinus Torvalds #define IPMI_CPI1_MANUFACTURER_ID 0x0108 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds static int ipmi_cpi1_detect (ipmi_user_t user) 2331da177e4SLinus Torvalds { 2341da177e4SLinus Torvalds return ((mfg_id == IPMI_CPI1_MANUFACTURER_ID) 2351da177e4SLinus Torvalds && (prod_id == IPMI_CPI1_PRODUCT_ID)); 2361da177e4SLinus Torvalds } 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds static void ipmi_poweroff_cpi1 (ipmi_user_t user) 2391da177e4SLinus Torvalds { 2401da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 2411da177e4SLinus Torvalds struct ipmi_ipmb_addr ipmb_addr; 2421da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 2431da177e4SLinus Torvalds int rv; 2441da177e4SLinus Torvalds unsigned char data[1]; 2451da177e4SLinus Torvalds int slot; 2461da177e4SLinus Torvalds unsigned char hotswap_ipmb; 2471da177e4SLinus Torvalds unsigned char aer_addr; 2481da177e4SLinus Torvalds unsigned char aer_lun; 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds /* 2511da177e4SLinus Torvalds * Configure IPMI address for local access 2521da177e4SLinus Torvalds */ 2531da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 2541da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 2551da177e4SLinus Torvalds smi_addr.lun = 0; 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds printk(KERN_INFO PFX "Powering down via CPI1 power command\n"); 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds /* 2601da177e4SLinus Torvalds * Get IPMI ipmb address 2611da177e4SLinus Torvalds */ 2621da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; 2631da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_GET_SLOT_GA; 2641da177e4SLinus Torvalds send_msg.data = NULL; 2651da177e4SLinus Torvalds send_msg.data_len = 0; 2661da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 2671da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 2681da177e4SLinus Torvalds &send_msg); 2691da177e4SLinus Torvalds if (rv) 2701da177e4SLinus Torvalds goto out; 2711da177e4SLinus Torvalds slot = halt_recv_msg.msg.data[1]; 2721da177e4SLinus Torvalds hotswap_ipmb = (slot > 9) ? (0xb0 + 2 * slot) : (0xae + 2 * slot); 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds /* 2751da177e4SLinus Torvalds * Get active event receiver 2761da177e4SLinus Torvalds */ 2771da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_SENSOR_EVT >> 2; 2781da177e4SLinus Torvalds send_msg.cmd = IPMI_CMD_GET_EVENT_RECEIVER; 2791da177e4SLinus Torvalds send_msg.data = NULL; 2801da177e4SLinus Torvalds send_msg.data_len = 0; 2811da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 2821da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 2831da177e4SLinus Torvalds &send_msg); 2841da177e4SLinus Torvalds if (rv) 2851da177e4SLinus Torvalds goto out; 2861da177e4SLinus Torvalds aer_addr = halt_recv_msg.msg.data[1]; 2871da177e4SLinus Torvalds aer_lun = halt_recv_msg.msg.data[2]; 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds /* 2901da177e4SLinus Torvalds * Setup IPMB address target instead of local target 2911da177e4SLinus Torvalds */ 2921da177e4SLinus Torvalds ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; 2931da177e4SLinus Torvalds ipmb_addr.channel = 0; 2941da177e4SLinus Torvalds ipmb_addr.slave_addr = aer_addr; 2951da177e4SLinus Torvalds ipmb_addr.lun = aer_lun; 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds /* 2981da177e4SLinus Torvalds * Send request hotswap control to remove blade from dpv 2991da177e4SLinus Torvalds */ 3001da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; 3011da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL; 3021da177e4SLinus Torvalds send_msg.data = &hotswap_ipmb; 3031da177e4SLinus Torvalds send_msg.data_len = 1; 3041da177e4SLinus Torvalds ipmi_request_in_rc_mode(user, 3051da177e4SLinus Torvalds (struct ipmi_addr *) &ipmb_addr, 3061da177e4SLinus Torvalds &send_msg); 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds /* 3091da177e4SLinus Torvalds * Set reset asserted 3101da177e4SLinus Torvalds */ 3111da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; 3121da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_SET_RESET_STATE; 3131da177e4SLinus Torvalds send_msg.data = data; 3141da177e4SLinus Torvalds data[0] = 1; /* Reset asserted state */ 3151da177e4SLinus Torvalds send_msg.data_len = 1; 3161da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 3171da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 3181da177e4SLinus Torvalds &send_msg); 3191da177e4SLinus Torvalds if (rv) 3201da177e4SLinus Torvalds goto out; 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds /* 3231da177e4SLinus Torvalds * Power down 3241da177e4SLinus Torvalds */ 3251da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; 3261da177e4SLinus Torvalds send_msg.cmd = OEM_GRP_CMD_SET_POWER_STATE; 3271da177e4SLinus Torvalds send_msg.data = data; 3281da177e4SLinus Torvalds data[0] = 1; /* Power down state */ 3291da177e4SLinus Torvalds send_msg.data_len = 1; 3301da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 3311da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 3321da177e4SLinus Torvalds &send_msg); 3331da177e4SLinus Torvalds if (rv) 3341da177e4SLinus Torvalds goto out; 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds out: 3371da177e4SLinus Torvalds return; 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds /* 341168524d6SCorey Minyard * ipmi_dell_chassis_detect() 342168524d6SCorey Minyard * Dell systems with IPMI < 1.5 don't set the chassis capability bit 343168524d6SCorey Minyard * but they can handle a chassis poweroff or powercycle command. 344168524d6SCorey Minyard */ 345168524d6SCorey Minyard 346168524d6SCorey Minyard #define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00} 347168524d6SCorey Minyard static int ipmi_dell_chassis_detect (ipmi_user_t user) 348168524d6SCorey Minyard { 349168524d6SCorey Minyard const char ipmi_version_major = ipmi_version & 0xF; 350168524d6SCorey Minyard const char ipmi_version_minor = (ipmi_version >> 4) & 0xF; 351168524d6SCorey Minyard const char mfr[3]=DELL_IANA_MFR_ID; 352168524d6SCorey Minyard if (!memcmp(mfr, &mfg_id, sizeof(mfr)) && 353168524d6SCorey Minyard ipmi_version_major <= 1 && 354168524d6SCorey Minyard ipmi_version_minor < 5) 355168524d6SCorey Minyard return 1; 356168524d6SCorey Minyard return 0; 357168524d6SCorey Minyard } 358168524d6SCorey Minyard 359168524d6SCorey Minyard /* 3601da177e4SLinus Torvalds * Standard chassis support 3611da177e4SLinus Torvalds */ 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds #define IPMI_NETFN_CHASSIS_REQUEST 0 3641da177e4SLinus Torvalds #define IPMI_CHASSIS_CONTROL_CMD 0x02 3651da177e4SLinus Torvalds 3661da177e4SLinus Torvalds static int ipmi_chassis_detect (ipmi_user_t user) 3671da177e4SLinus Torvalds { 3681da177e4SLinus Torvalds /* Chassis support, use it. */ 3691da177e4SLinus Torvalds return (capabilities & 0x80); 3701da177e4SLinus Torvalds } 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds static void ipmi_poweroff_chassis (ipmi_user_t user) 3731da177e4SLinus Torvalds { 3741da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 3751da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 3761da177e4SLinus Torvalds int rv; 3771da177e4SLinus Torvalds unsigned char data[1]; 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds /* 3801da177e4SLinus Torvalds * Configure IPMI address for local access 3811da177e4SLinus Torvalds */ 3821da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 3831da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 3841da177e4SLinus Torvalds smi_addr.lun = 0; 3851da177e4SLinus Torvalds 3863b625943SCorey Minyard powercyclefailed: 3873b625943SCorey Minyard printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n", 3888c702e16SCorey Minyard (poweroff_powercycle ? "cycle" : "down")); 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds /* 3911da177e4SLinus Torvalds * Power down 3921da177e4SLinus Torvalds */ 3931da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_CHASSIS_REQUEST; 3941da177e4SLinus Torvalds send_msg.cmd = IPMI_CHASSIS_CONTROL_CMD; 3958c702e16SCorey Minyard if (poweroff_powercycle) 3968c702e16SCorey Minyard data[0] = IPMI_CHASSIS_POWER_CYCLE; 3978c702e16SCorey Minyard else 3988c702e16SCorey Minyard data[0] = IPMI_CHASSIS_POWER_DOWN; 3991da177e4SLinus Torvalds send_msg.data = data; 4001da177e4SLinus Torvalds send_msg.data_len = sizeof(data); 4011da177e4SLinus Torvalds rv = ipmi_request_in_rc_mode(user, 4021da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 4031da177e4SLinus Torvalds &send_msg); 4041da177e4SLinus Torvalds if (rv) { 4058c702e16SCorey Minyard if (poweroff_powercycle) { 4063b625943SCorey Minyard /* power cycle failed, default to power down */ 4073b625943SCorey Minyard printk(KERN_ERR PFX "Unable to send chassis power " \ 4083b625943SCorey Minyard "cycle message, IPMI error 0x%x\n", rv); 4098c702e16SCorey Minyard poweroff_powercycle = 0; 4103b625943SCorey Minyard goto powercyclefailed; 4118c702e16SCorey Minyard } 4123b625943SCorey Minyard 4133b625943SCorey Minyard printk(KERN_ERR PFX "Unable to send chassis power " \ 4143b625943SCorey Minyard "down message, IPMI error 0x%x\n", rv); 4153b625943SCorey Minyard } 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds /* Table of possible power off functions. */ 4201da177e4SLinus Torvalds struct poweroff_function { 4211da177e4SLinus Torvalds char *platform_type; 4221da177e4SLinus Torvalds int (*detect)(ipmi_user_t user); 4231da177e4SLinus Torvalds void (*poweroff_func)(ipmi_user_t user); 4241da177e4SLinus Torvalds }; 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds static struct poweroff_function poweroff_functions[] = { 4271da177e4SLinus Torvalds { .platform_type = "ATCA", 4281da177e4SLinus Torvalds .detect = ipmi_atca_detect, 4291da177e4SLinus Torvalds .poweroff_func = ipmi_poweroff_atca }, 4301da177e4SLinus Torvalds { .platform_type = "CPI1", 4311da177e4SLinus Torvalds .detect = ipmi_cpi1_detect, 4321da177e4SLinus Torvalds .poweroff_func = ipmi_poweroff_cpi1 }, 433168524d6SCorey Minyard { .platform_type = "chassis", 434168524d6SCorey Minyard .detect = ipmi_dell_chassis_detect, 435168524d6SCorey Minyard .poweroff_func = ipmi_poweroff_chassis }, 4361da177e4SLinus Torvalds /* Chassis should generally be last, other things should override 4371da177e4SLinus Torvalds it. */ 4381da177e4SLinus Torvalds { .platform_type = "chassis", 4391da177e4SLinus Torvalds .detect = ipmi_chassis_detect, 4401da177e4SLinus Torvalds .poweroff_func = ipmi_poweroff_chassis }, 4411da177e4SLinus Torvalds }; 4421da177e4SLinus Torvalds #define NUM_PO_FUNCS (sizeof(poweroff_functions) \ 4431da177e4SLinus Torvalds / sizeof(struct poweroff_function)) 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds /* Our local state. */ 4471da177e4SLinus Torvalds static int ready = 0; 4481da177e4SLinus Torvalds static ipmi_user_t ipmi_user; 4491da177e4SLinus Torvalds static void (*specific_poweroff_func)(ipmi_user_t user) = NULL; 4501da177e4SLinus Torvalds 4511da177e4SLinus Torvalds /* Holds the old poweroff function so we can restore it on removal. */ 4521da177e4SLinus Torvalds static void (*old_poweroff_func)(void); 4531da177e4SLinus Torvalds 4541da177e4SLinus Torvalds 4551da177e4SLinus Torvalds /* Called on a powerdown request. */ 4561da177e4SLinus Torvalds static void ipmi_poweroff_function (void) 4571da177e4SLinus Torvalds { 4581da177e4SLinus Torvalds if (!ready) 4591da177e4SLinus Torvalds return; 4601da177e4SLinus Torvalds 4611da177e4SLinus Torvalds /* Use run-to-completion mode, since interrupts may be off. */ 4621da177e4SLinus Torvalds ipmi_user_set_run_to_completion(ipmi_user, 1); 4631da177e4SLinus Torvalds specific_poweroff_func(ipmi_user); 4641da177e4SLinus Torvalds ipmi_user_set_run_to_completion(ipmi_user, 0); 4651da177e4SLinus Torvalds } 4661da177e4SLinus Torvalds 4671da177e4SLinus Torvalds /* Wait for an IPMI interface to be installed, the first one installed 4681da177e4SLinus Torvalds will be grabbed by this code and used to perform the powerdown. */ 4691da177e4SLinus Torvalds static void ipmi_po_new_smi(int if_num) 4701da177e4SLinus Torvalds { 4711da177e4SLinus Torvalds struct ipmi_system_interface_addr smi_addr; 4721da177e4SLinus Torvalds struct kernel_ipmi_msg send_msg; 4731da177e4SLinus Torvalds int rv; 4741da177e4SLinus Torvalds int i; 4751da177e4SLinus Torvalds 4761da177e4SLinus Torvalds if (ready) 4771da177e4SLinus Torvalds return; 4781da177e4SLinus Torvalds 4793b625943SCorey Minyard rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL, 4803b625943SCorey Minyard &ipmi_user); 4811da177e4SLinus Torvalds if (rv) { 4821da177e4SLinus Torvalds printk(KERN_ERR PFX "could not create IPMI user, error %d\n", 4831da177e4SLinus Torvalds rv); 4841da177e4SLinus Torvalds return; 4851da177e4SLinus Torvalds } 4861da177e4SLinus Torvalds 4871da177e4SLinus Torvalds /* 4881da177e4SLinus Torvalds * Do a get device ide and store some results, since this is 4891da177e4SLinus Torvalds * used by several functions. 4901da177e4SLinus Torvalds */ 4911da177e4SLinus Torvalds smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; 4921da177e4SLinus Torvalds smi_addr.channel = IPMI_BMC_CHANNEL; 4931da177e4SLinus Torvalds smi_addr.lun = 0; 4941da177e4SLinus Torvalds 4951da177e4SLinus Torvalds send_msg.netfn = IPMI_NETFN_APP_REQUEST; 4961da177e4SLinus Torvalds send_msg.cmd = IPMI_GET_DEVICE_ID_CMD; 4971da177e4SLinus Torvalds send_msg.data = NULL; 4981da177e4SLinus Torvalds send_msg.data_len = 0; 4991da177e4SLinus Torvalds rv = ipmi_request_wait_for_response(ipmi_user, 5001da177e4SLinus Torvalds (struct ipmi_addr *) &smi_addr, 5011da177e4SLinus Torvalds &send_msg); 5021da177e4SLinus Torvalds if (rv) { 5031da177e4SLinus Torvalds printk(KERN_ERR PFX "Unable to send IPMI get device id info," 5041da177e4SLinus Torvalds " IPMI error 0x%x\n", rv); 5051da177e4SLinus Torvalds goto out_err; 5061da177e4SLinus Torvalds } 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds if (halt_recv_msg.msg.data_len < 12) { 5091da177e4SLinus Torvalds printk(KERN_ERR PFX "(chassis) IPMI get device id info too," 5101da177e4SLinus Torvalds " short, was %d bytes, needed %d bytes\n", 5111da177e4SLinus Torvalds halt_recv_msg.msg.data_len, 12); 5121da177e4SLinus Torvalds goto out_err; 5131da177e4SLinus Torvalds } 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds mfg_id = (halt_recv_msg.msg.data[7] 5161da177e4SLinus Torvalds | (halt_recv_msg.msg.data[8] << 8) 5171da177e4SLinus Torvalds | (halt_recv_msg.msg.data[9] << 16)); 5181da177e4SLinus Torvalds prod_id = (halt_recv_msg.msg.data[10] 5191da177e4SLinus Torvalds | (halt_recv_msg.msg.data[11] << 8)); 5201da177e4SLinus Torvalds capabilities = halt_recv_msg.msg.data[6]; 521168524d6SCorey Minyard ipmi_version = halt_recv_msg.msg.data[5]; 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds /* Scan for a poweroff method */ 5251da177e4SLinus Torvalds for (i = 0; i < NUM_PO_FUNCS; i++) { 5261da177e4SLinus Torvalds if (poweroff_functions[i].detect(ipmi_user)) 5271da177e4SLinus Torvalds goto found; 5281da177e4SLinus Torvalds } 5291da177e4SLinus Torvalds 5301da177e4SLinus Torvalds out_err: 5311da177e4SLinus Torvalds printk(KERN_ERR PFX "Unable to find a poweroff function that" 5321da177e4SLinus Torvalds " will work, giving up\n"); 5331da177e4SLinus Torvalds ipmi_destroy_user(ipmi_user); 5341da177e4SLinus Torvalds return; 5351da177e4SLinus Torvalds 5361da177e4SLinus Torvalds found: 5371da177e4SLinus Torvalds printk(KERN_INFO PFX "Found a %s style poweroff function\n", 5381da177e4SLinus Torvalds poweroff_functions[i].platform_type); 5391da177e4SLinus Torvalds specific_poweroff_func = poweroff_functions[i].poweroff_func; 5401da177e4SLinus Torvalds old_poweroff_func = pm_power_off; 5411da177e4SLinus Torvalds pm_power_off = ipmi_poweroff_function; 5421da177e4SLinus Torvalds ready = 1; 5431da177e4SLinus Torvalds } 5441da177e4SLinus Torvalds 5451da177e4SLinus Torvalds static void ipmi_po_smi_gone(int if_num) 5461da177e4SLinus Torvalds { 5471da177e4SLinus Torvalds /* This can never be called, because once poweroff driver is 5481da177e4SLinus Torvalds registered, the interface can't go away until the power 5491da177e4SLinus Torvalds driver is unregistered. */ 5501da177e4SLinus Torvalds } 5511da177e4SLinus Torvalds 5521da177e4SLinus Torvalds static struct ipmi_smi_watcher smi_watcher = 5531da177e4SLinus Torvalds { 5541da177e4SLinus Torvalds .owner = THIS_MODULE, 5551da177e4SLinus Torvalds .new_smi = ipmi_po_new_smi, 5561da177e4SLinus Torvalds .smi_gone = ipmi_po_smi_gone 5571da177e4SLinus Torvalds }; 5581da177e4SLinus Torvalds 5591da177e4SLinus Torvalds 5603b625943SCorey Minyard #ifdef CONFIG_PROC_FS 5618c702e16SCorey Minyard #include <linux/sysctl.h> 5623b625943SCorey Minyard 5638c702e16SCorey Minyard static ctl_table ipmi_table[] = { 5648c702e16SCorey Minyard { .ctl_name = DEV_IPMI_POWEROFF_POWERCYCLE, 5658c702e16SCorey Minyard .procname = "poweroff_powercycle", 5668c702e16SCorey Minyard .data = &poweroff_powercycle, 5678c702e16SCorey Minyard .maxlen = sizeof(poweroff_powercycle), 5688c702e16SCorey Minyard .mode = 0644, 5698c702e16SCorey Minyard .proc_handler = &proc_dointvec }, 5708c702e16SCorey Minyard { } 5718c702e16SCorey Minyard }; 5723b625943SCorey Minyard 5738c702e16SCorey Minyard static ctl_table ipmi_dir_table[] = { 5748c702e16SCorey Minyard { .ctl_name = DEV_IPMI, 5758c702e16SCorey Minyard .procname = "ipmi", 5768c702e16SCorey Minyard .mode = 0555, 5778c702e16SCorey Minyard .child = ipmi_table }, 5788c702e16SCorey Minyard { } 5798c702e16SCorey Minyard }; 5803b625943SCorey Minyard 5818c702e16SCorey Minyard static ctl_table ipmi_root_table[] = { 5828c702e16SCorey Minyard { .ctl_name = CTL_DEV, 5838c702e16SCorey Minyard .procname = "dev", 5848c702e16SCorey Minyard .mode = 0555, 5858c702e16SCorey Minyard .child = ipmi_dir_table }, 5868c702e16SCorey Minyard { } 5878c702e16SCorey Minyard }; 5883b625943SCorey Minyard 5898c702e16SCorey Minyard static struct ctl_table_header *ipmi_table_header; 5903b625943SCorey Minyard #endif /* CONFIG_PROC_FS */ 5913b625943SCorey Minyard 5921da177e4SLinus Torvalds /* 5931da177e4SLinus Torvalds * Startup and shutdown functions. 5941da177e4SLinus Torvalds */ 5951da177e4SLinus Torvalds static int ipmi_poweroff_init (void) 5961da177e4SLinus Torvalds { 5971da177e4SLinus Torvalds int rv; 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds printk ("Copyright (C) 2004 MontaVista Software -" 6001fdd75bdSCorey Minyard " IPMI Powerdown via sys_reboot.\n"); 6011da177e4SLinus Torvalds 6028c702e16SCorey Minyard if (poweroff_powercycle) 6033b625943SCorey Minyard printk(KERN_INFO PFX "Power cycle is enabled.\n"); 6041da177e4SLinus Torvalds 6058c702e16SCorey Minyard #ifdef CONFIG_PROC_FS 6068c702e16SCorey Minyard ipmi_table_header = register_sysctl_table(ipmi_root_table, 1); 6078c702e16SCorey Minyard if (!ipmi_table_header) { 6088c702e16SCorey Minyard printk(KERN_ERR PFX "Unable to register powercycle sysctl\n"); 6098c702e16SCorey Minyard rv = -ENOMEM; 6108c702e16SCorey Minyard goto out_err; 6113b625943SCorey Minyard } 6128c702e16SCorey Minyard #endif 6133b625943SCorey Minyard 6143b625943SCorey Minyard rv = ipmi_smi_watcher_register(&smi_watcher); 6153b625943SCorey Minyard if (rv) { 6168c702e16SCorey Minyard unregister_sysctl_table(ipmi_table_header); 6173b625943SCorey Minyard printk(KERN_ERR PFX "Unable to register SMI watcher: %d\n", rv); 6183b625943SCorey Minyard goto out_err; 6193b625943SCorey Minyard } 6203b625943SCorey Minyard 6213b625943SCorey Minyard out_err: 6221da177e4SLinus Torvalds return rv; 6231da177e4SLinus Torvalds } 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds #ifdef MODULE 6261da177e4SLinus Torvalds static __exit void ipmi_poweroff_cleanup(void) 6271da177e4SLinus Torvalds { 6281da177e4SLinus Torvalds int rv; 6291da177e4SLinus Torvalds 6303b625943SCorey Minyard #ifdef CONFIG_PROC_FS 6318c702e16SCorey Minyard unregister_sysctl_table(ipmi_table_header); 6323b625943SCorey Minyard #endif 6333b625943SCorey Minyard 6341da177e4SLinus Torvalds ipmi_smi_watcher_unregister(&smi_watcher); 6351da177e4SLinus Torvalds 6361da177e4SLinus Torvalds if (ready) { 6371da177e4SLinus Torvalds rv = ipmi_destroy_user(ipmi_user); 6381da177e4SLinus Torvalds if (rv) 6391da177e4SLinus Torvalds printk(KERN_ERR PFX "could not cleanup the IPMI" 6401da177e4SLinus Torvalds " user: 0x%x\n", rv); 6411da177e4SLinus Torvalds pm_power_off = old_poweroff_func; 6421da177e4SLinus Torvalds } 6431da177e4SLinus Torvalds } 6441da177e4SLinus Torvalds module_exit(ipmi_poweroff_cleanup); 6451da177e4SLinus Torvalds #endif 6461da177e4SLinus Torvalds 6471da177e4SLinus Torvalds module_init(ipmi_poweroff_init); 6481da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 6491fdd75bdSCorey Minyard MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); 6501fdd75bdSCorey Minyard MODULE_DESCRIPTION("IPMI Poweroff extension to sys_reboot"); 651