From: Corey Minyard Date: Tue, 6 Sep 2005 22:18:38 +0000 (-0700) Subject: [PATCH] ipmi: add per-channel IPMB addresses X-Git-Tag: v2.6.14-rc1~610 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c14979b993021377228958498937bcdd9539cbce;p=platform%2Fkernel%2Flinux-exynos.git [PATCH] ipmi: add per-channel IPMB addresses IPMI allows multiple IPMB channels on a single interface, and each channel might have a different IPMB address. However, the driver has only one IPMB address that it uses for everything. This patch adds new IOCTLS and a new internal interface for setting per-channel IPMB addresses and LUNs. New systems are coming out with support for multiple IPMB channels, and they are broken without this patch. Signed-off-by: Corey Minyard Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c index e0a53570fea1..5571e92c520f 100644 --- a/drivers/char/ipmi/ipmi_devintf.c +++ b/drivers/char/ipmi/ipmi_devintf.c @@ -411,6 +411,7 @@ static int ipmi_ioctl(struct inode *inode, break; } + /* The next four are legacy, not per-channel. */ case IPMICTL_SET_MY_ADDRESS_CMD: { unsigned int val; @@ -420,22 +421,25 @@ static int ipmi_ioctl(struct inode *inode, break; } - ipmi_set_my_address(priv->user, val); - rv = 0; + rv = ipmi_set_my_address(priv->user, 0, val); break; } case IPMICTL_GET_MY_ADDRESS_CMD: { - unsigned int val; + unsigned int val; + unsigned char rval; + + rv = ipmi_get_my_address(priv->user, 0, &rval); + if (rv) + break; - val = ipmi_get_my_address(priv->user); + val = rval; if (copy_to_user(arg, &val, sizeof(val))) { rv = -EFAULT; break; } - rv = 0; break; } @@ -448,24 +452,94 @@ static int ipmi_ioctl(struct inode *inode, break; } - ipmi_set_my_LUN(priv->user, val); - rv = 0; + rv = ipmi_set_my_LUN(priv->user, 0, val); break; } case IPMICTL_GET_MY_LUN_CMD: { - unsigned int val; + unsigned int val; + unsigned char rval; + + rv = ipmi_get_my_LUN(priv->user, 0, &rval); + if (rv) + break; - val = ipmi_get_my_LUN(priv->user); + val = rval; if (copy_to_user(arg, &val, sizeof(val))) { rv = -EFAULT; break; } - rv = 0; break; } + + case IPMICTL_SET_MY_CHANNEL_ADDRESS_CMD: + { + struct ipmi_channel_lun_address_set val; + + if (copy_from_user(&val, arg, sizeof(val))) { + rv = -EFAULT; + break; + } + + return ipmi_set_my_address(priv->user, val.channel, val.value); + break; + } + + case IPMICTL_GET_MY_CHANNEL_ADDRESS_CMD: + { + struct ipmi_channel_lun_address_set val; + + if (copy_from_user(&val, arg, sizeof(val))) { + rv = -EFAULT; + break; + } + + rv = ipmi_get_my_address(priv->user, val.channel, &val.value); + if (rv) + break; + + if (copy_to_user(arg, &val, sizeof(val))) { + rv = -EFAULT; + break; + } + break; + } + + case IPMICTL_SET_MY_CHANNEL_LUN_CMD: + { + struct ipmi_channel_lun_address_set val; + + if (copy_from_user(&val, arg, sizeof(val))) { + rv = -EFAULT; + break; + } + + rv = ipmi_set_my_LUN(priv->user, val.channel, val.value); + break; + } + + case IPMICTL_GET_MY_CHANNEL_LUN_CMD: + { + struct ipmi_channel_lun_address_set val; + + if (copy_from_user(&val, arg, sizeof(val))) { + rv = -EFAULT; + break; + } + + rv = ipmi_get_my_LUN(priv->user, val.channel, &val.value); + if (rv) + break; + + if (copy_to_user(arg, &val, sizeof(val))) { + rv = -EFAULT; + break; + } + break; + } + case IPMICTL_SET_TIMING_PARMS_CMD: { struct ipmi_timing_parms parms; diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index e16c13fe698d..84d477c6f925 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -124,6 +124,14 @@ struct ipmi_channel { unsigned char medium; unsigned char protocol; + + /* My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, + but may be changed by the user. */ + unsigned char address; + + /* My LUN. This should generally stay the SMS LUN, but just in + case... */ + unsigned char lun; }; #ifdef CONFIG_PROC_FS @@ -135,7 +143,7 @@ struct ipmi_proc_entry #endif #define IPMI_IPMB_NUM_SEQ 64 -#define IPMI_MAX_CHANNELS 8 +#define IPMI_MAX_CHANNELS 16 struct ipmi_smi { /* What interface number are we? */ @@ -199,14 +207,6 @@ struct ipmi_smi this is registered. */ ipmi_user_t all_cmd_rcvr; - /* My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, - but may be changed by the user. */ - unsigned char my_address; - - /* My LUN. This should generally stay the SMS LUN, but just in - case... */ - unsigned char my_lun; - /* The event receiver for my BMC, only really used at panic shutdown as a place to store this. */ unsigned char event_receiver; @@ -766,26 +766,44 @@ void ipmi_get_version(ipmi_user_t user, *minor = user->intf->version_minor; } -void ipmi_set_my_address(ipmi_user_t user, - unsigned char address) +int ipmi_set_my_address(ipmi_user_t user, + unsigned int channel, + unsigned char address) { - user->intf->my_address = address; + if (channel >= IPMI_MAX_CHANNELS) + return -EINVAL; + user->intf->channels[channel].address = address; + return 0; } -unsigned char ipmi_get_my_address(ipmi_user_t user) +int ipmi_get_my_address(ipmi_user_t user, + unsigned int channel, + unsigned char *address) { - return user->intf->my_address; + if (channel >= IPMI_MAX_CHANNELS) + return -EINVAL; + *address = user->intf->channels[channel].address; + return 0; } -void ipmi_set_my_LUN(ipmi_user_t user, - unsigned char LUN) +int ipmi_set_my_LUN(ipmi_user_t user, + unsigned int channel, + unsigned char LUN) { - user->intf->my_lun = LUN & 0x3; + if (channel >= IPMI_MAX_CHANNELS) + return -EINVAL; + user->intf->channels[channel].lun = LUN & 0x3; + return 0; } -unsigned char ipmi_get_my_LUN(ipmi_user_t user) +int ipmi_get_my_LUN(ipmi_user_t user, + unsigned int channel, + unsigned char *address) { - return user->intf->my_lun; + if (channel >= IPMI_MAX_CHANNELS) + return -EINVAL; + *address = user->intf->channels[channel].lun; + return 0; } int ipmi_set_gets_events(ipmi_user_t user, int val) @@ -1213,7 +1231,7 @@ static inline int i_ipmi_request(ipmi_user_t user, unsigned char ipmb_seq; long seqid; - if (addr->channel > IPMI_NUM_CHANNELS) { + if (addr->channel >= IPMI_NUM_CHANNELS) { spin_lock_irqsave(&intf->counter_lock, flags); intf->sent_invalid_commands++; spin_unlock_irqrestore(&intf->counter_lock, flags); @@ -1346,6 +1364,18 @@ static inline int i_ipmi_request(ipmi_user_t user, return rv; } +static int check_addr(ipmi_smi_t intf, + struct ipmi_addr *addr, + unsigned char *saddr, + unsigned char *lun) +{ + if (addr->channel >= IPMI_MAX_CHANNELS) + return -EINVAL; + *lun = intf->channels[addr->channel].lun; + *saddr = intf->channels[addr->channel].address; + return 0; +} + int ipmi_request_settime(ipmi_user_t user, struct ipmi_addr *addr, long msgid, @@ -1355,6 +1385,12 @@ int ipmi_request_settime(ipmi_user_t user, int retries, unsigned int retry_time_ms) { + unsigned char saddr, lun; + int rv; + + rv = check_addr(user->intf, addr, &saddr, &lun); + if (rv) + return rv; return i_ipmi_request(user, user->intf, addr, @@ -1363,8 +1399,8 @@ int ipmi_request_settime(ipmi_user_t user, user_msg_data, NULL, NULL, priority, - user->intf->my_address, - user->intf->my_lun, + saddr, + lun, retries, retry_time_ms); } @@ -1378,6 +1414,12 @@ int ipmi_request_supply_msgs(ipmi_user_t user, struct ipmi_recv_msg *supplied_recv, int priority) { + unsigned char saddr, lun; + int rv; + + rv = check_addr(user->intf, addr, &saddr, &lun); + if (rv) + return rv; return i_ipmi_request(user, user->intf, addr, @@ -1387,8 +1429,8 @@ int ipmi_request_supply_msgs(ipmi_user_t user, supplied_smi, supplied_recv, priority, - user->intf->my_address, - user->intf->my_lun, + saddr, + lun, -1, 0); } @@ -1397,8 +1439,15 @@ static int ipmb_file_read_proc(char *page, char **start, off_t off, { char *out = (char *) page; ipmi_smi_t intf = data; + int i; + int rv= 0; - return sprintf(out, "%x\n", intf->my_address); + for (i=0; ichannels[i].address); + out[rv-1] = '\n'; /* Replace the final space with a newline */ + out[rv] = '\0'; + rv++; + return rv; } static int version_file_read_proc(char *page, char **start, off_t off, @@ -1592,8 +1641,8 @@ send_channel_info_cmd(ipmi_smi_t intf, int chan) NULL, NULL, 0, - intf->my_address, - intf->my_lun, + intf->channels[0].address, + intf->channels[0].lun, -1, 0); } @@ -1696,11 +1745,13 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, new_intf->intf_num = i; new_intf->version_major = version_major; new_intf->version_minor = version_minor; - if (slave_addr == 0) - new_intf->my_address = IPMI_BMC_SLAVE_ADDR; - else - new_intf->my_address = slave_addr; - new_intf->my_lun = 2; /* the SMS LUN. */ + for (j=0; jchannels[j].address + = IPMI_BMC_SLAVE_ADDR; + new_intf->channels[j].lun = 2; + } + if (slave_addr != 0) + new_intf->channels[0].address = slave_addr; rwlock_init(&(new_intf->users_lock)); INIT_LIST_HEAD(&(new_intf->users)); new_intf->handlers = handlers; @@ -1985,7 +2036,7 @@ static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, msg->data[3] = msg->rsp[6]; msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); - msg->data[6] = intf->my_address; + msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; /* rqseq/lun */ msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); msg->data[8] = msg->rsp[8]; /* cmd */ @@ -2919,8 +2970,8 @@ static void send_panic_events(char *str) &smi_msg, &recv_msg, 0, - intf->my_address, - intf->my_lun, + intf->channels[0].address, + intf->channels[0].lun, 0, 1); /* Don't retry, and don't wait. */ } @@ -2965,8 +3016,8 @@ static void send_panic_events(char *str) &smi_msg, &recv_msg, 0, - intf->my_address, - intf->my_lun, + intf->channels[0].address, + intf->channels[0].lun, 0, 1); /* Don't retry, and don't wait. */ if (intf->local_event_generator) { @@ -2985,8 +3036,8 @@ static void send_panic_events(char *str) &smi_msg, &recv_msg, 0, - intf->my_address, - intf->my_lun, + intf->channels[0].address, + intf->channels[0].lun, 0, 1); /* no retry, and no wait. */ } intf->null_user_handler = NULL; @@ -2996,7 +3047,7 @@ static void send_panic_events(char *str) be zero, and it must not be my address. */ if (((intf->event_receiver & 1) == 0) && (intf->event_receiver != 0) - && (intf->event_receiver != intf->my_address)) + && (intf->event_receiver != intf->channels[0].address)) { /* The event receiver is valid, send an IPMB message. */ @@ -3031,7 +3082,7 @@ static void send_panic_events(char *str) data[0] = 0; data[1] = 0; data[2] = 0xf0; /* OEM event without timestamp. */ - data[3] = intf->my_address; + data[3] = intf->channels[0].address; data[4] = j++; /* sequence # */ /* Always give 11 bytes, so strncpy will fill it with zeroes for me. */ @@ -3047,8 +3098,8 @@ static void send_panic_events(char *str) &smi_msg, &recv_msg, 0, - intf->my_address, - intf->my_lun, + intf->channels[0].address, + intf->channels[0].lun, 0, 1); /* no retry, and no wait. */ } } diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h index 596ca6130159..846b69899776 100644 --- a/include/linux/ipmi.h +++ b/include/linux/ipmi.h @@ -298,13 +298,19 @@ void ipmi_get_version(ipmi_user_t user, this user, so it will affect all users of this interface. This is so some initialization code can come in and do the OEM-specific things it takes to determine your address (if not the BMC) and set - it for everyone else. */ -void ipmi_set_my_address(ipmi_user_t user, - unsigned char address); -unsigned char ipmi_get_my_address(ipmi_user_t user); -void ipmi_set_my_LUN(ipmi_user_t user, - unsigned char LUN); -unsigned char ipmi_get_my_LUN(ipmi_user_t user); + it for everyone else. Note that each channel can have its own address. */ +int ipmi_set_my_address(ipmi_user_t user, + unsigned int channel, + unsigned char address); +int ipmi_get_my_address(ipmi_user_t user, + unsigned int channel, + unsigned char *address); +int ipmi_set_my_LUN(ipmi_user_t user, + unsigned int channel, + unsigned char LUN); +int ipmi_get_my_LUN(ipmi_user_t user, + unsigned int channel, + unsigned char *LUN); /* * Like ipmi_request, but lets you specify the number of retries and @@ -585,6 +591,16 @@ struct ipmi_cmdspec * things it takes to determine your address (if not the BMC) and set * it for everyone else. You should probably leave the LUN alone. */ +struct ipmi_channel_lun_address_set +{ + unsigned short channel; + unsigned char value; +}; +#define IPMICTL_SET_MY_CHANNEL_ADDRESS_CMD _IOR(IPMI_IOC_MAGIC, 24, struct ipmi_channel_lun_address_set) +#define IPMICTL_GET_MY_CHANNEL_ADDRESS_CMD _IOR(IPMI_IOC_MAGIC, 25, struct ipmi_channel_lun_address_set) +#define IPMICTL_SET_MY_CHANNEL_LUN_CMD _IOR(IPMI_IOC_MAGIC, 26, struct ipmi_channel_lun_address_set) +#define IPMICTL_GET_MY_CHANNEL_LUN_CMD _IOR(IPMI_IOC_MAGIC, 27, struct ipmi_channel_lun_address_set) +/* Legacy interfaces, these only set IPMB 0. */ #define IPMICTL_SET_MY_ADDRESS_CMD _IOR(IPMI_IOC_MAGIC, 17, unsigned int) #define IPMICTL_GET_MY_ADDRESS_CMD _IOR(IPMI_IOC_MAGIC, 18, unsigned int) #define IPMICTL_SET_MY_LUN_CMD _IOR(IPMI_IOC_MAGIC, 19, unsigned int)