* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <asm/semaphore.h>
-#include <linux/kdev_t.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/proc_fs.h>
#include <linux/string.h>
+#include <linux/completion.h>
+#include <linux/pm.h>
+#include <linux/kdev_t.h>
#include <linux/ipmi.h>
#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);
+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. */
-unsigned int mfg_id;
-unsigned int prod_id;
-unsigned char capabilities;
+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
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 =
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);
#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;
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;
}
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;
}
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
*/
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;
}
};
static struct poweroff_function poweroff_functions[] = {
- { "ATCA", ipmi_atca_detect, ipmi_poweroff_atca },
- { "CPI1", ipmi_cpi1_detect, ipmi_poweroff_cpi1 },
+ { .platform_type = "ATCA",
+ .detect = ipmi_atca_detect,
+ .poweroff_func = ipmi_poweroff_atca },
+ { .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. */
- { "chassis", ipmi_chassis_detect, ipmi_poweroff_chassis },
+ { .platform_type = "chassis",
+ .detect = ipmi_chassis_detect,
+ .poweroff_func = ipmi_poweroff_chassis },
};
#define NUM_PO_FUNCS (sizeof(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)
{
/* 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;
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.
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;
}
static void ipmi_po_smi_gone(int if_num)
{
- /* This can never be called, because once poweroff driver is
- registered, the interface can't go away until the power
- driver is unregistered. */
+ if (!ready)
+ return;
+
+ if (ipmi_ifnum != if_num)
+ return;
+
+ ready = 0;
+ ipmi_destroy_user(ipmi_user);
+ pm_power_off = old_poweroff_func;
}
static struct ipmi_smi_watcher smi_watcher =
};
+#ifdef CONFIG_PROC_FS
+#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 },
+ { }
+};
+
+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.
*/
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;
}
{
int rv;
+#ifdef CONFIG_PROC_FS
+ unregister_sysctl_table(ipmi_table_header);
+#endif
+
ipmi_smi_watcher_unregister(&smi_watcher);
if (ready) {
module_init(ipmi_poweroff_init);
MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>");
+MODULE_DESCRIPTION("IPMI Poweroff extension to sys_reboot");
git://git.onelab.eu / linux-2.6.git / blobdiff