Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ipmi_si.c |
| 3 | * |
| 4 | * The interface to the IPMI driver for the system interfaces (KCS, SMIC, |
| 5 | * BT). |
| 6 | * |
| 7 | * Author: MontaVista Software, Inc. |
| 8 | * Corey Minyard <minyard@mvista.com> |
| 9 | * source@mvista.com |
| 10 | * |
| 11 | * Copyright 2002 MontaVista Software Inc. |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 12 | * Copyright 2006 IBM Corp., Christian Krafft <krafft@de.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify it |
| 15 | * under the terms of the GNU General Public License as published by the |
| 16 | * Free Software Foundation; either version 2 of the License, or (at your |
| 17 | * option) any later version. |
| 18 | * |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 21 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 22 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 23 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 25 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 26 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 27 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 28 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 29 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | * |
| 31 | * You should have received a copy of the GNU General Public License along |
| 32 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 33 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * This file holds the "policy" for the interface to the SMI state |
| 38 | * machine. It does the configuration, handles timers and interrupts, |
| 39 | * and drives the real SMI state machine. |
| 40 | */ |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/module.h> |
| 43 | #include <linux/moduleparam.h> |
| 44 | #include <asm/system.h> |
| 45 | #include <linux/sched.h> |
| 46 | #include <linux/timer.h> |
| 47 | #include <linux/errno.h> |
| 48 | #include <linux/spinlock.h> |
| 49 | #include <linux/slab.h> |
| 50 | #include <linux/delay.h> |
| 51 | #include <linux/list.h> |
| 52 | #include <linux/pci.h> |
| 53 | #include <linux/ioport.h> |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 54 | #include <linux/notifier.h> |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 55 | #include <linux/mutex.h> |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 56 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #include <linux/interrupt.h> |
| 59 | #include <linux/rcupdate.h> |
| 60 | #include <linux/ipmi_smi.h> |
| 61 | #include <asm/io.h> |
| 62 | #include "ipmi_si_sm.h" |
| 63 | #include <linux/init.h> |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 64 | #include <linux/dmi.h> |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 65 | #include <linux/string.h> |
| 66 | #include <linux/ctype.h> |
| 67 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 68 | #ifdef CONFIG_PPC_OF |
| 69 | #include <asm/of_device.h> |
| 70 | #include <asm/of_platform.h> |
| 71 | #endif |
| 72 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 73 | #define PFX "ipmi_si: " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
| 75 | /* Measure times between events in the driver. */ |
| 76 | #undef DEBUG_TIMING |
| 77 | |
| 78 | /* Call every 10 ms. */ |
| 79 | #define SI_TIMEOUT_TIME_USEC 10000 |
| 80 | #define SI_USEC_PER_JIFFY (1000000/HZ) |
| 81 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) |
| 82 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a |
| 83 | short timeout */ |
| 84 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 85 | /* Bit for BMC global enables. */ |
| 86 | #define IPMI_BMC_RCV_MSG_INTR 0x01 |
| 87 | #define IPMI_BMC_EVT_MSG_INTR 0x02 |
| 88 | #define IPMI_BMC_EVT_MSG_BUFF 0x04 |
| 89 | #define IPMI_BMC_SYS_LOG 0x08 |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | enum si_intf_state { |
| 92 | SI_NORMAL, |
| 93 | SI_GETTING_FLAGS, |
| 94 | SI_GETTING_EVENTS, |
| 95 | SI_CLEARING_FLAGS, |
| 96 | SI_CLEARING_FLAGS_THEN_SET_IRQ, |
| 97 | SI_GETTING_MESSAGES, |
| 98 | SI_ENABLE_INTERRUPTS1, |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 99 | SI_ENABLE_INTERRUPTS2, |
| 100 | SI_DISABLE_INTERRUPTS1, |
| 101 | SI_DISABLE_INTERRUPTS2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | /* FIXME - add watchdog stuff. */ |
| 103 | }; |
| 104 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 105 | /* Some BT-specific defines we need here. */ |
| 106 | #define IPMI_BT_INTMASK_REG 2 |
| 107 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 |
| 108 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | enum si_type { |
| 111 | SI_KCS, SI_SMIC, SI_BT |
| 112 | }; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 113 | static char *si_to_str[] = { "kcs", "smic", "bt" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 115 | #define DEVICE_NAME "ipmi_si" |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 116 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 117 | static struct device_driver ipmi_driver = |
| 118 | { |
| 119 | .name = DEVICE_NAME, |
| 120 | .bus = &platform_bus_type |
| 121 | }; |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | struct smi_info |
| 124 | { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 125 | int intf_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | ipmi_smi_t intf; |
| 127 | struct si_sm_data *si_sm; |
| 128 | struct si_sm_handlers *handlers; |
| 129 | enum si_type si_type; |
| 130 | spinlock_t si_lock; |
| 131 | spinlock_t msg_lock; |
| 132 | struct list_head xmit_msgs; |
| 133 | struct list_head hp_xmit_msgs; |
| 134 | struct ipmi_smi_msg *curr_msg; |
| 135 | enum si_intf_state si_state; |
| 136 | |
| 137 | /* Used to handle the various types of I/O that can occur with |
| 138 | IPMI */ |
| 139 | struct si_sm_io io; |
| 140 | int (*io_setup)(struct smi_info *info); |
| 141 | void (*io_cleanup)(struct smi_info *info); |
| 142 | int (*irq_setup)(struct smi_info *info); |
| 143 | void (*irq_cleanup)(struct smi_info *info); |
| 144 | unsigned int io_size; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 145 | char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */ |
| 146 | void (*addr_source_cleanup)(struct smi_info *info); |
| 147 | void *addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 149 | /* Per-OEM handler, called from handle_flags(). |
| 150 | Returns 1 when handle_flags() needs to be re-run |
| 151 | or 0 indicating it set si_state itself. |
| 152 | */ |
| 153 | int (*oem_data_avail_handler)(struct smi_info *smi_info); |
| 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | /* Flags from the last GET_MSG_FLAGS command, used when an ATTN |
| 156 | is set to hold the flags until we are done handling everything |
| 157 | from the flags. */ |
| 158 | #define RECEIVE_MSG_AVAIL 0x01 |
| 159 | #define EVENT_MSG_BUFFER_FULL 0x02 |
| 160 | #define WDT_PRE_TIMEOUT_INT 0x08 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 161 | #define OEM0_DATA_AVAIL 0x20 |
| 162 | #define OEM1_DATA_AVAIL 0x40 |
| 163 | #define OEM2_DATA_AVAIL 0x80 |
| 164 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ |
| 165 | OEM1_DATA_AVAIL | \ |
| 166 | OEM2_DATA_AVAIL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | unsigned char msg_flags; |
| 168 | |
| 169 | /* If set to true, this will request events the next time the |
| 170 | state machine is idle. */ |
| 171 | atomic_t req_events; |
| 172 | |
| 173 | /* If true, run the state machine to completion on every send |
| 174 | call. Generally used after a panic to make sure stuff goes |
| 175 | out. */ |
| 176 | int run_to_completion; |
| 177 | |
| 178 | /* The I/O port of an SI interface. */ |
| 179 | int port; |
| 180 | |
| 181 | /* The space between start addresses of the two ports. For |
| 182 | instance, if the first port is 0xca2 and the spacing is 4, then |
| 183 | the second port is 0xca6. */ |
| 184 | unsigned int spacing; |
| 185 | |
| 186 | /* zero if no irq; */ |
| 187 | int irq; |
| 188 | |
| 189 | /* The timer for this si. */ |
| 190 | struct timer_list si_timer; |
| 191 | |
| 192 | /* The time (in jiffies) the last timeout occurred at. */ |
| 193 | unsigned long last_timeout_jiffies; |
| 194 | |
| 195 | /* Used to gracefully stop the timer without race conditions. */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 196 | atomic_t stop_operation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
| 198 | /* The driver will disable interrupts when it gets into a |
| 199 | situation where it cannot handle messages due to lack of |
| 200 | memory. Once that situation clears up, it will re-enable |
| 201 | interrupts. */ |
| 202 | int interrupt_disabled; |
| 203 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 204 | /* From the get device id response... */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 205 | struct ipmi_device_id device_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 207 | /* Driver model stuff. */ |
| 208 | struct device *dev; |
| 209 | struct platform_device *pdev; |
| 210 | |
| 211 | /* True if we allocated the device, false if it came from |
| 212 | * someplace else (like PCI). */ |
| 213 | int dev_registered; |
| 214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | /* Slave address, could be reported from DMI. */ |
| 216 | unsigned char slave_addr; |
| 217 | |
| 218 | /* Counters and things for the proc filesystem. */ |
| 219 | spinlock_t count_lock; |
| 220 | unsigned long short_timeouts; |
| 221 | unsigned long long_timeouts; |
| 222 | unsigned long timeout_restarts; |
| 223 | unsigned long idles; |
| 224 | unsigned long interrupts; |
| 225 | unsigned long attentions; |
| 226 | unsigned long flag_fetches; |
| 227 | unsigned long hosed_count; |
| 228 | unsigned long complete_transactions; |
| 229 | unsigned long events; |
| 230 | unsigned long watchdog_pretimeouts; |
| 231 | unsigned long incoming_messages; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 232 | |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 233 | struct task_struct *thread; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 234 | |
| 235 | struct list_head link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | }; |
| 237 | |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 238 | #define SI_MAX_PARMS 4 |
| 239 | |
| 240 | static int force_kipmid[SI_MAX_PARMS]; |
| 241 | static int num_force_kipmid; |
| 242 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 243 | static int unload_when_empty = 1; |
| 244 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 245 | static int try_smi_init(struct smi_info *smi); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 246 | static void cleanup_one_si(struct smi_info *to_clean); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 247 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 248 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 249 | static int register_xaction_notifier(struct notifier_block * nb) |
| 250 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 251 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 252 | } |
| 253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | static void deliver_recv_msg(struct smi_info *smi_info, |
| 255 | struct ipmi_smi_msg *msg) |
| 256 | { |
| 257 | /* Deliver the message to the upper layer with the lock |
| 258 | released. */ |
| 259 | spin_unlock(&(smi_info->si_lock)); |
| 260 | ipmi_smi_msg_received(smi_info->intf, msg); |
| 261 | spin_lock(&(smi_info->si_lock)); |
| 262 | } |
| 263 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 264 | static void return_hosed_msg(struct smi_info *smi_info, int cCode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | { |
| 266 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 267 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 268 | if (cCode < 0 || cCode > IPMI_ERR_UNSPECIFIED) |
| 269 | cCode = IPMI_ERR_UNSPECIFIED; |
| 270 | /* else use it as is */ |
| 271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | /* Make it a reponse */ |
| 273 | msg->rsp[0] = msg->data[0] | 4; |
| 274 | msg->rsp[1] = msg->data[1]; |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 275 | msg->rsp[2] = cCode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | msg->rsp_size = 3; |
| 277 | |
| 278 | smi_info->curr_msg = NULL; |
| 279 | deliver_recv_msg(smi_info, msg); |
| 280 | } |
| 281 | |
| 282 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) |
| 283 | { |
| 284 | int rv; |
| 285 | struct list_head *entry = NULL; |
| 286 | #ifdef DEBUG_TIMING |
| 287 | struct timeval t; |
| 288 | #endif |
| 289 | |
| 290 | /* No need to save flags, we aleady have interrupts off and we |
| 291 | already hold the SMI lock. */ |
| 292 | spin_lock(&(smi_info->msg_lock)); |
| 293 | |
| 294 | /* Pick the high priority queue first. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 295 | if (!list_empty(&(smi_info->hp_xmit_msgs))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | entry = smi_info->hp_xmit_msgs.next; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 297 | } else if (!list_empty(&(smi_info->xmit_msgs))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | entry = smi_info->xmit_msgs.next; |
| 299 | } |
| 300 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 301 | if (!entry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | smi_info->curr_msg = NULL; |
| 303 | rv = SI_SM_IDLE; |
| 304 | } else { |
| 305 | int err; |
| 306 | |
| 307 | list_del(entry); |
| 308 | smi_info->curr_msg = list_entry(entry, |
| 309 | struct ipmi_smi_msg, |
| 310 | link); |
| 311 | #ifdef DEBUG_TIMING |
| 312 | do_gettimeofday(&t); |
| 313 | printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 314 | #endif |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 315 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
| 316 | 0, smi_info); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 317 | if (err & NOTIFY_STOP_MASK) { |
| 318 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 319 | goto out; |
| 320 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | err = smi_info->handlers->start_transaction( |
| 322 | smi_info->si_sm, |
| 323 | smi_info->curr_msg->data, |
| 324 | smi_info->curr_msg->data_size); |
| 325 | if (err) { |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 326 | return_hosed_msg(smi_info, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
| 328 | |
| 329 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 330 | } |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 331 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | spin_unlock(&(smi_info->msg_lock)); |
| 333 | |
| 334 | return rv; |
| 335 | } |
| 336 | |
| 337 | static void start_enable_irq(struct smi_info *smi_info) |
| 338 | { |
| 339 | unsigned char msg[2]; |
| 340 | |
| 341 | /* If we are enabling interrupts, we have to tell the |
| 342 | BMC to use them. */ |
| 343 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 344 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 345 | |
| 346 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 347 | smi_info->si_state = SI_ENABLE_INTERRUPTS1; |
| 348 | } |
| 349 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 350 | static void start_disable_irq(struct smi_info *smi_info) |
| 351 | { |
| 352 | unsigned char msg[2]; |
| 353 | |
| 354 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 355 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 356 | |
| 357 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 358 | smi_info->si_state = SI_DISABLE_INTERRUPTS1; |
| 359 | } |
| 360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | static void start_clear_flags(struct smi_info *smi_info) |
| 362 | { |
| 363 | unsigned char msg[3]; |
| 364 | |
| 365 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ |
| 366 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 367 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; |
| 368 | msg[2] = WDT_PRE_TIMEOUT_INT; |
| 369 | |
| 370 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 371 | smi_info->si_state = SI_CLEARING_FLAGS; |
| 372 | } |
| 373 | |
| 374 | /* When we have a situtaion where we run out of memory and cannot |
| 375 | allocate messages, we just leave them in the BMC and run the system |
| 376 | polled until we can allocate some memory. Once we have some |
| 377 | memory, we will re-enable the interrupt. */ |
| 378 | static inline void disable_si_irq(struct smi_info *smi_info) |
| 379 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 380 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 381 | start_disable_irq(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | smi_info->interrupt_disabled = 1; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | static inline void enable_si_irq(struct smi_info *smi_info) |
| 387 | { |
| 388 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 389 | start_enable_irq(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | smi_info->interrupt_disabled = 0; |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | static void handle_flags(struct smi_info *smi_info) |
| 395 | { |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 396 | retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
| 398 | /* Watchdog pre-timeout */ |
| 399 | spin_lock(&smi_info->count_lock); |
| 400 | smi_info->watchdog_pretimeouts++; |
| 401 | spin_unlock(&smi_info->count_lock); |
| 402 | |
| 403 | start_clear_flags(smi_info); |
| 404 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; |
| 405 | spin_unlock(&(smi_info->si_lock)); |
| 406 | ipmi_smi_watchdog_pretimeout(smi_info->intf); |
| 407 | spin_lock(&(smi_info->si_lock)); |
| 408 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { |
| 409 | /* Messages available. */ |
| 410 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 411 | if (!smi_info->curr_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | disable_si_irq(smi_info); |
| 413 | smi_info->si_state = SI_NORMAL; |
| 414 | return; |
| 415 | } |
| 416 | enable_si_irq(smi_info); |
| 417 | |
| 418 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 419 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; |
| 420 | smi_info->curr_msg->data_size = 2; |
| 421 | |
| 422 | smi_info->handlers->start_transaction( |
| 423 | smi_info->si_sm, |
| 424 | smi_info->curr_msg->data, |
| 425 | smi_info->curr_msg->data_size); |
| 426 | smi_info->si_state = SI_GETTING_MESSAGES; |
| 427 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { |
| 428 | /* Events available. */ |
| 429 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 430 | if (!smi_info->curr_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | disable_si_irq(smi_info); |
| 432 | smi_info->si_state = SI_NORMAL; |
| 433 | return; |
| 434 | } |
| 435 | enable_si_irq(smi_info); |
| 436 | |
| 437 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 438 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; |
| 439 | smi_info->curr_msg->data_size = 2; |
| 440 | |
| 441 | smi_info->handlers->start_transaction( |
| 442 | smi_info->si_sm, |
| 443 | smi_info->curr_msg->data, |
| 444 | smi_info->curr_msg->data_size); |
| 445 | smi_info->si_state = SI_GETTING_EVENTS; |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 446 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
| 447 | smi_info->oem_data_avail_handler) { |
| 448 | if (smi_info->oem_data_avail_handler(smi_info)) |
| 449 | goto retry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | } else { |
| 451 | smi_info->si_state = SI_NORMAL; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | static void handle_transaction_done(struct smi_info *smi_info) |
| 456 | { |
| 457 | struct ipmi_smi_msg *msg; |
| 458 | #ifdef DEBUG_TIMING |
| 459 | struct timeval t; |
| 460 | |
| 461 | do_gettimeofday(&t); |
| 462 | printk("**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 463 | #endif |
| 464 | switch (smi_info->si_state) { |
| 465 | case SI_NORMAL: |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 466 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | break; |
| 468 | |
| 469 | smi_info->curr_msg->rsp_size |
| 470 | = smi_info->handlers->get_result( |
| 471 | smi_info->si_sm, |
| 472 | smi_info->curr_msg->rsp, |
| 473 | IPMI_MAX_MSG_LENGTH); |
| 474 | |
| 475 | /* Do this here becase deliver_recv_msg() releases the |
| 476 | lock, and a new message can be put in during the |
| 477 | time the lock is released. */ |
| 478 | msg = smi_info->curr_msg; |
| 479 | smi_info->curr_msg = NULL; |
| 480 | deliver_recv_msg(smi_info, msg); |
| 481 | break; |
| 482 | |
| 483 | case SI_GETTING_FLAGS: |
| 484 | { |
| 485 | unsigned char msg[4]; |
| 486 | unsigned int len; |
| 487 | |
| 488 | /* We got the flags from the SMI, now handle them. */ |
| 489 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 490 | if (msg[2] != 0) { |
| 491 | /* Error fetching flags, just give up for |
| 492 | now. */ |
| 493 | smi_info->si_state = SI_NORMAL; |
| 494 | } else if (len < 4) { |
| 495 | /* Hmm, no flags. That's technically illegal, but |
| 496 | don't use uninitialized data. */ |
| 497 | smi_info->si_state = SI_NORMAL; |
| 498 | } else { |
| 499 | smi_info->msg_flags = msg[3]; |
| 500 | handle_flags(smi_info); |
| 501 | } |
| 502 | break; |
| 503 | } |
| 504 | |
| 505 | case SI_CLEARING_FLAGS: |
| 506 | case SI_CLEARING_FLAGS_THEN_SET_IRQ: |
| 507 | { |
| 508 | unsigned char msg[3]; |
| 509 | |
| 510 | /* We cleared the flags. */ |
| 511 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); |
| 512 | if (msg[2] != 0) { |
| 513 | /* Error clearing flags */ |
| 514 | printk(KERN_WARNING |
| 515 | "ipmi_si: Error clearing flags: %2.2x\n", |
| 516 | msg[2]); |
| 517 | } |
| 518 | if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ) |
| 519 | start_enable_irq(smi_info); |
| 520 | else |
| 521 | smi_info->si_state = SI_NORMAL; |
| 522 | break; |
| 523 | } |
| 524 | |
| 525 | case SI_GETTING_EVENTS: |
| 526 | { |
| 527 | smi_info->curr_msg->rsp_size |
| 528 | = smi_info->handlers->get_result( |
| 529 | smi_info->si_sm, |
| 530 | smi_info->curr_msg->rsp, |
| 531 | IPMI_MAX_MSG_LENGTH); |
| 532 | |
| 533 | /* Do this here becase deliver_recv_msg() releases the |
| 534 | lock, and a new message can be put in during the |
| 535 | time the lock is released. */ |
| 536 | msg = smi_info->curr_msg; |
| 537 | smi_info->curr_msg = NULL; |
| 538 | if (msg->rsp[2] != 0) { |
| 539 | /* Error getting event, probably done. */ |
| 540 | msg->done(msg); |
| 541 | |
| 542 | /* Take off the event flag. */ |
| 543 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; |
| 544 | handle_flags(smi_info); |
| 545 | } else { |
| 546 | spin_lock(&smi_info->count_lock); |
| 547 | smi_info->events++; |
| 548 | spin_unlock(&smi_info->count_lock); |
| 549 | |
| 550 | /* Do this before we deliver the message |
| 551 | because delivering the message releases the |
| 552 | lock and something else can mess with the |
| 553 | state. */ |
| 554 | handle_flags(smi_info); |
| 555 | |
| 556 | deliver_recv_msg(smi_info, msg); |
| 557 | } |
| 558 | break; |
| 559 | } |
| 560 | |
| 561 | case SI_GETTING_MESSAGES: |
| 562 | { |
| 563 | smi_info->curr_msg->rsp_size |
| 564 | = smi_info->handlers->get_result( |
| 565 | smi_info->si_sm, |
| 566 | smi_info->curr_msg->rsp, |
| 567 | IPMI_MAX_MSG_LENGTH); |
| 568 | |
| 569 | /* Do this here becase deliver_recv_msg() releases the |
| 570 | lock, and a new message can be put in during the |
| 571 | time the lock is released. */ |
| 572 | msg = smi_info->curr_msg; |
| 573 | smi_info->curr_msg = NULL; |
| 574 | if (msg->rsp[2] != 0) { |
| 575 | /* Error getting event, probably done. */ |
| 576 | msg->done(msg); |
| 577 | |
| 578 | /* Take off the msg flag. */ |
| 579 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; |
| 580 | handle_flags(smi_info); |
| 581 | } else { |
| 582 | spin_lock(&smi_info->count_lock); |
| 583 | smi_info->incoming_messages++; |
| 584 | spin_unlock(&smi_info->count_lock); |
| 585 | |
| 586 | /* Do this before we deliver the message |
| 587 | because delivering the message releases the |
| 588 | lock and something else can mess with the |
| 589 | state. */ |
| 590 | handle_flags(smi_info); |
| 591 | |
| 592 | deliver_recv_msg(smi_info, msg); |
| 593 | } |
| 594 | break; |
| 595 | } |
| 596 | |
| 597 | case SI_ENABLE_INTERRUPTS1: |
| 598 | { |
| 599 | unsigned char msg[4]; |
| 600 | |
| 601 | /* We got the flags from the SMI, now handle them. */ |
| 602 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 603 | if (msg[2] != 0) { |
| 604 | printk(KERN_WARNING |
| 605 | "ipmi_si: Could not enable interrupts" |
| 606 | ", failed get, using polled mode.\n"); |
| 607 | smi_info->si_state = SI_NORMAL; |
| 608 | } else { |
| 609 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 610 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 611 | msg[2] = (msg[3] | |
| 612 | IPMI_BMC_RCV_MSG_INTR | |
| 613 | IPMI_BMC_EVT_MSG_INTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | smi_info->handlers->start_transaction( |
| 615 | smi_info->si_sm, msg, 3); |
| 616 | smi_info->si_state = SI_ENABLE_INTERRUPTS2; |
| 617 | } |
| 618 | break; |
| 619 | } |
| 620 | |
| 621 | case SI_ENABLE_INTERRUPTS2: |
| 622 | { |
| 623 | unsigned char msg[4]; |
| 624 | |
| 625 | /* We got the flags from the SMI, now handle them. */ |
| 626 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 627 | if (msg[2] != 0) { |
| 628 | printk(KERN_WARNING |
| 629 | "ipmi_si: Could not enable interrupts" |
| 630 | ", failed set, using polled mode.\n"); |
| 631 | } |
| 632 | smi_info->si_state = SI_NORMAL; |
| 633 | break; |
| 634 | } |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 635 | |
| 636 | case SI_DISABLE_INTERRUPTS1: |
| 637 | { |
| 638 | unsigned char msg[4]; |
| 639 | |
| 640 | /* We got the flags from the SMI, now handle them. */ |
| 641 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 642 | if (msg[2] != 0) { |
| 643 | printk(KERN_WARNING |
| 644 | "ipmi_si: Could not disable interrupts" |
| 645 | ", failed get.\n"); |
| 646 | smi_info->si_state = SI_NORMAL; |
| 647 | } else { |
| 648 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 649 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
| 650 | msg[2] = (msg[3] & |
| 651 | ~(IPMI_BMC_RCV_MSG_INTR | |
| 652 | IPMI_BMC_EVT_MSG_INTR)); |
| 653 | smi_info->handlers->start_transaction( |
| 654 | smi_info->si_sm, msg, 3); |
| 655 | smi_info->si_state = SI_DISABLE_INTERRUPTS2; |
| 656 | } |
| 657 | break; |
| 658 | } |
| 659 | |
| 660 | case SI_DISABLE_INTERRUPTS2: |
| 661 | { |
| 662 | unsigned char msg[4]; |
| 663 | |
| 664 | /* We got the flags from the SMI, now handle them. */ |
| 665 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 666 | if (msg[2] != 0) { |
| 667 | printk(KERN_WARNING |
| 668 | "ipmi_si: Could not disable interrupts" |
| 669 | ", failed set.\n"); |
| 670 | } |
| 671 | smi_info->si_state = SI_NORMAL; |
| 672 | break; |
| 673 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | } |
| 675 | } |
| 676 | |
| 677 | /* Called on timeouts and events. Timeouts should pass the elapsed |
| 678 | time, interrupts should pass in zero. */ |
| 679 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, |
| 680 | int time) |
| 681 | { |
| 682 | enum si_sm_result si_sm_result; |
| 683 | |
| 684 | restart: |
| 685 | /* There used to be a loop here that waited a little while |
| 686 | (around 25us) before giving up. That turned out to be |
| 687 | pointless, the minimum delays I was seeing were in the 300us |
| 688 | range, which is far too long to wait in an interrupt. So |
| 689 | we just run until the state machine tells us something |
| 690 | happened or it needs a delay. */ |
| 691 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); |
| 692 | time = 0; |
| 693 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) |
| 694 | { |
| 695 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 696 | } |
| 697 | |
| 698 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) |
| 699 | { |
| 700 | spin_lock(&smi_info->count_lock); |
| 701 | smi_info->complete_transactions++; |
| 702 | spin_unlock(&smi_info->count_lock); |
| 703 | |
| 704 | handle_transaction_done(smi_info); |
| 705 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 706 | } |
| 707 | else if (si_sm_result == SI_SM_HOSED) |
| 708 | { |
| 709 | spin_lock(&smi_info->count_lock); |
| 710 | smi_info->hosed_count++; |
| 711 | spin_unlock(&smi_info->count_lock); |
| 712 | |
| 713 | /* Do the before return_hosed_msg, because that |
| 714 | releases the lock. */ |
| 715 | smi_info->si_state = SI_NORMAL; |
| 716 | if (smi_info->curr_msg != NULL) { |
| 717 | /* If we were handling a user message, format |
| 718 | a response to send to the upper layer to |
| 719 | tell it about the error. */ |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 720 | return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | } |
| 722 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 723 | } |
| 724 | |
| 725 | /* We prefer handling attn over new messages. */ |
| 726 | if (si_sm_result == SI_SM_ATTN) |
| 727 | { |
| 728 | unsigned char msg[2]; |
| 729 | |
| 730 | spin_lock(&smi_info->count_lock); |
| 731 | smi_info->attentions++; |
| 732 | spin_unlock(&smi_info->count_lock); |
| 733 | |
| 734 | /* Got a attn, send down a get message flags to see |
| 735 | what's causing it. It would be better to handle |
| 736 | this in the upper layer, but due to the way |
| 737 | interrupts work with the SMI, that's not really |
| 738 | possible. */ |
| 739 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 740 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; |
| 741 | |
| 742 | smi_info->handlers->start_transaction( |
| 743 | smi_info->si_sm, msg, 2); |
| 744 | smi_info->si_state = SI_GETTING_FLAGS; |
| 745 | goto restart; |
| 746 | } |
| 747 | |
| 748 | /* If we are currently idle, try to start the next message. */ |
| 749 | if (si_sm_result == SI_SM_IDLE) { |
| 750 | spin_lock(&smi_info->count_lock); |
| 751 | smi_info->idles++; |
| 752 | spin_unlock(&smi_info->count_lock); |
| 753 | |
| 754 | si_sm_result = start_next_msg(smi_info); |
| 755 | if (si_sm_result != SI_SM_IDLE) |
| 756 | goto restart; |
| 757 | } |
| 758 | |
| 759 | if ((si_sm_result == SI_SM_IDLE) |
| 760 | && (atomic_read(&smi_info->req_events))) |
| 761 | { |
| 762 | /* We are idle and the upper layer requested that I fetch |
| 763 | events, so do so. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | atomic_set(&smi_info->req_events, 0); |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 765 | |
| 766 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
| 767 | if (!smi_info->curr_msg) |
| 768 | goto out; |
| 769 | |
| 770 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 771 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; |
| 772 | smi_info->curr_msg->data_size = 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | |
| 774 | smi_info->handlers->start_transaction( |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 775 | smi_info->si_sm, |
| 776 | smi_info->curr_msg->data, |
| 777 | smi_info->curr_msg->data_size); |
| 778 | smi_info->si_state = SI_GETTING_EVENTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | goto restart; |
| 780 | } |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 781 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | return si_sm_result; |
| 783 | } |
| 784 | |
| 785 | static void sender(void *send_info, |
| 786 | struct ipmi_smi_msg *msg, |
| 787 | int priority) |
| 788 | { |
| 789 | struct smi_info *smi_info = send_info; |
| 790 | enum si_sm_result result; |
| 791 | unsigned long flags; |
| 792 | #ifdef DEBUG_TIMING |
| 793 | struct timeval t; |
| 794 | #endif |
| 795 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 796 | if (atomic_read(&smi_info->stop_operation)) { |
| 797 | msg->rsp[0] = msg->data[0] | 4; |
| 798 | msg->rsp[1] = msg->data[1]; |
| 799 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 800 | msg->rsp_size = 3; |
| 801 | deliver_recv_msg(smi_info, msg); |
| 802 | return; |
| 803 | } |
| 804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | spin_lock_irqsave(&(smi_info->msg_lock), flags); |
| 806 | #ifdef DEBUG_TIMING |
| 807 | do_gettimeofday(&t); |
| 808 | printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 809 | #endif |
| 810 | |
| 811 | if (smi_info->run_to_completion) { |
| 812 | /* If we are running to completion, then throw it in |
| 813 | the list and run transactions until everything is |
| 814 | clear. Priority doesn't matter here. */ |
| 815 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); |
| 816 | |
| 817 | /* We have to release the msg lock and claim the smi |
| 818 | lock in this case, because of race conditions. */ |
| 819 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); |
| 820 | |
| 821 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 822 | result = smi_event_handler(smi_info, 0); |
| 823 | while (result != SI_SM_IDLE) { |
| 824 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 825 | result = smi_event_handler(smi_info, |
| 826 | SI_SHORT_TIMEOUT_USEC); |
| 827 | } |
| 828 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 829 | return; |
| 830 | } else { |
| 831 | if (priority > 0) { |
| 832 | list_add_tail(&(msg->link), &(smi_info->hp_xmit_msgs)); |
| 833 | } else { |
| 834 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); |
| 835 | } |
| 836 | } |
| 837 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); |
| 838 | |
| 839 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 840 | if ((smi_info->si_state == SI_NORMAL) |
| 841 | && (smi_info->curr_msg == NULL)) |
| 842 | { |
| 843 | start_next_msg(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | } |
| 845 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 846 | } |
| 847 | |
| 848 | static void set_run_to_completion(void *send_info, int i_run_to_completion) |
| 849 | { |
| 850 | struct smi_info *smi_info = send_info; |
| 851 | enum si_sm_result result; |
| 852 | unsigned long flags; |
| 853 | |
| 854 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 855 | |
| 856 | smi_info->run_to_completion = i_run_to_completion; |
| 857 | if (i_run_to_completion) { |
| 858 | result = smi_event_handler(smi_info, 0); |
| 859 | while (result != SI_SM_IDLE) { |
| 860 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 861 | result = smi_event_handler(smi_info, |
| 862 | SI_SHORT_TIMEOUT_USEC); |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 867 | } |
| 868 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 869 | static int ipmi_thread(void *data) |
| 870 | { |
| 871 | struct smi_info *smi_info = data; |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 872 | unsigned long flags; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 873 | enum si_sm_result smi_result; |
| 874 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 875 | set_user_nice(current, 19); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 876 | while (!kthread_should_stop()) { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 877 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 878 | smi_result = smi_event_handler(smi_info, 0); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 879 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 880 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
| 881 | /* do nothing */ |
| 882 | } |
| 883 | else if (smi_result == SI_SM_CALL_WITH_DELAY) |
akpm@osdl.org | 3397973 | 2006-06-27 02:54:04 -0700 | [diff] [blame] | 884 | schedule(); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 885 | else |
| 886 | schedule_timeout_interruptible(1); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 887 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 888 | return 0; |
| 889 | } |
| 890 | |
| 891 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | static void poll(void *send_info) |
| 893 | { |
| 894 | struct smi_info *smi_info = send_info; |
| 895 | |
Corey Minyard | 15c62e1 | 2006-12-06 20:41:06 -0800 | [diff] [blame] | 896 | /* |
| 897 | * Make sure there is some delay in the poll loop so we can |
| 898 | * drive time forward and timeout things. |
| 899 | */ |
| 900 | udelay(10); |
| 901 | smi_event_handler(smi_info, 10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | static void request_events(void *send_info) |
| 905 | { |
| 906 | struct smi_info *smi_info = send_info; |
| 907 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 908 | if (atomic_read(&smi_info->stop_operation)) |
| 909 | return; |
| 910 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | atomic_set(&smi_info->req_events, 1); |
| 912 | } |
| 913 | |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 914 | static int initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | static void smi_timeout(unsigned long data) |
| 917 | { |
| 918 | struct smi_info *smi_info = (struct smi_info *) data; |
| 919 | enum si_sm_result smi_result; |
| 920 | unsigned long flags; |
| 921 | unsigned long jiffies_now; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 922 | long time_diff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | #ifdef DEBUG_TIMING |
| 924 | struct timeval t; |
| 925 | #endif |
| 926 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 928 | #ifdef DEBUG_TIMING |
| 929 | do_gettimeofday(&t); |
| 930 | printk("**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 931 | #endif |
| 932 | jiffies_now = jiffies; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 933 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | * SI_USEC_PER_JIFFY); |
| 935 | smi_result = smi_event_handler(smi_info, time_diff); |
| 936 | |
| 937 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 938 | |
| 939 | smi_info->last_timeout_jiffies = jiffies_now; |
| 940 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 941 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | /* Running with interrupts, only do long timeouts. */ |
| 943 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; |
| 944 | spin_lock_irqsave(&smi_info->count_lock, flags); |
| 945 | smi_info->long_timeouts++; |
| 946 | spin_unlock_irqrestore(&smi_info->count_lock, flags); |
| 947 | goto do_add_timer; |
| 948 | } |
| 949 | |
| 950 | /* If the state machine asks for a short delay, then shorten |
| 951 | the timer timeout. */ |
| 952 | if (smi_result == SI_SM_CALL_WITH_DELAY) { |
| 953 | spin_lock_irqsave(&smi_info->count_lock, flags); |
| 954 | smi_info->short_timeouts++; |
| 955 | spin_unlock_irqrestore(&smi_info->count_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | smi_info->si_timer.expires = jiffies + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | } else { |
| 958 | spin_lock_irqsave(&smi_info->count_lock, flags); |
| 959 | smi_info->long_timeouts++; |
| 960 | spin_unlock_irqrestore(&smi_info->count_lock, flags); |
| 961 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | } |
| 963 | |
| 964 | do_add_timer: |
| 965 | add_timer(&(smi_info->si_timer)); |
| 966 | } |
| 967 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 968 | static irqreturn_t si_irq_handler(int irq, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | { |
| 970 | struct smi_info *smi_info = data; |
| 971 | unsigned long flags; |
| 972 | #ifdef DEBUG_TIMING |
| 973 | struct timeval t; |
| 974 | #endif |
| 975 | |
| 976 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 977 | |
| 978 | spin_lock(&smi_info->count_lock); |
| 979 | smi_info->interrupts++; |
| 980 | spin_unlock(&smi_info->count_lock); |
| 981 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | #ifdef DEBUG_TIMING |
| 983 | do_gettimeofday(&t); |
| 984 | printk("**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 985 | #endif |
| 986 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 988 | return IRQ_HANDLED; |
| 989 | } |
| 990 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 991 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 992 | { |
| 993 | struct smi_info *smi_info = data; |
| 994 | /* We need to clear the IRQ flag for the BT interface. */ |
| 995 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, |
| 996 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT |
| 997 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 998 | return si_irq_handler(irq, data); |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 999 | } |
| 1000 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1001 | static int smi_start_processing(void *send_info, |
| 1002 | ipmi_smi_t intf) |
| 1003 | { |
| 1004 | struct smi_info *new_smi = send_info; |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1005 | int enable = 0; |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1006 | |
| 1007 | new_smi->intf = intf; |
| 1008 | |
| 1009 | /* Set up the timer that drives the interface. */ |
| 1010 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); |
| 1011 | new_smi->last_timeout_jiffies = jiffies; |
| 1012 | mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES); |
| 1013 | |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1014 | /* |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1015 | * Check if the user forcefully enabled the daemon. |
| 1016 | */ |
| 1017 | if (new_smi->intf_num < num_force_kipmid) |
| 1018 | enable = force_kipmid[new_smi->intf_num]; |
| 1019 | /* |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1020 | * The BT interface is efficient enough to not need a thread, |
| 1021 | * and there is no need for a thread if we have interrupts. |
| 1022 | */ |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1023 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
| 1024 | enable = 1; |
| 1025 | |
| 1026 | if (enable) { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1027 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
| 1028 | "kipmi%d", new_smi->intf_num); |
| 1029 | if (IS_ERR(new_smi->thread)) { |
| 1030 | printk(KERN_NOTICE "ipmi_si_intf: Could not start" |
| 1031 | " kernel thread due to error %ld, only using" |
| 1032 | " timers to drive the interface\n", |
| 1033 | PTR_ERR(new_smi->thread)); |
| 1034 | new_smi->thread = NULL; |
| 1035 | } |
| 1036 | } |
| 1037 | |
| 1038 | return 0; |
| 1039 | } |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1040 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1041 | static void set_maintenance_mode(void *send_info, int enable) |
| 1042 | { |
| 1043 | struct smi_info *smi_info = send_info; |
| 1044 | |
| 1045 | if (!enable) |
| 1046 | atomic_set(&smi_info->req_events, 0); |
| 1047 | } |
| 1048 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | static struct ipmi_smi_handlers handlers = |
| 1050 | { |
| 1051 | .owner = THIS_MODULE, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1052 | .start_processing = smi_start_processing, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | .sender = sender, |
| 1054 | .request_events = request_events, |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1055 | .set_maintenance_mode = set_maintenance_mode, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | .set_run_to_completion = set_run_to_completion, |
| 1057 | .poll = poll, |
| 1058 | }; |
| 1059 | |
| 1060 | /* There can be 4 IO ports passed in (with or without IRQs), 4 addresses, |
| 1061 | a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS */ |
| 1062 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1063 | static LIST_HEAD(smi_infos); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1064 | static DEFINE_MUTEX(smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1065 | static int smi_num; /* Used to sequence the SMIs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | #define DEFAULT_REGSPACING 1 |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 1068 | #define DEFAULT_REGSIZE 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | |
| 1070 | static int si_trydefaults = 1; |
| 1071 | static char *si_type[SI_MAX_PARMS]; |
| 1072 | #define MAX_SI_TYPE_STR 30 |
| 1073 | static char si_type_str[MAX_SI_TYPE_STR]; |
| 1074 | static unsigned long addrs[SI_MAX_PARMS]; |
| 1075 | static int num_addrs; |
| 1076 | static unsigned int ports[SI_MAX_PARMS]; |
| 1077 | static int num_ports; |
| 1078 | static int irqs[SI_MAX_PARMS]; |
| 1079 | static int num_irqs; |
| 1080 | static int regspacings[SI_MAX_PARMS]; |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1081 | static int num_regspacings; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | static int regsizes[SI_MAX_PARMS]; |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1083 | static int num_regsizes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | static int regshifts[SI_MAX_PARMS]; |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1085 | static int num_regshifts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | static int slave_addrs[SI_MAX_PARMS]; |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1087 | static int num_slave_addrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1089 | #define IPMI_IO_ADDR_SPACE 0 |
| 1090 | #define IPMI_MEM_ADDR_SPACE 1 |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1091 | static char *addr_space_to_str[] = { "i/o", "mem" }; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1092 | |
| 1093 | static int hotmod_handler(const char *val, struct kernel_param *kp); |
| 1094 | |
| 1095 | module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200); |
| 1096 | MODULE_PARM_DESC(hotmod, "Add and remove interfaces. See" |
| 1097 | " Documentation/IPMI.txt in the kernel sources for the" |
| 1098 | " gory details."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | |
| 1100 | module_param_named(trydefaults, si_trydefaults, bool, 0); |
| 1101 | MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" |
| 1102 | " default scan of the KCS and SMIC interface at the standard" |
| 1103 | " address"); |
| 1104 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); |
| 1105 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" |
| 1106 | " interface separated by commas. The types are 'kcs'," |
| 1107 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" |
| 1108 | " the first interface to kcs and the second to bt"); |
| 1109 | module_param_array(addrs, long, &num_addrs, 0); |
| 1110 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" |
| 1111 | " addresses separated by commas. Only use if an interface" |
| 1112 | " is in memory. Otherwise, set it to zero or leave" |
| 1113 | " it blank."); |
| 1114 | module_param_array(ports, int, &num_ports, 0); |
| 1115 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" |
| 1116 | " addresses separated by commas. Only use if an interface" |
| 1117 | " is a port. Otherwise, set it to zero or leave" |
| 1118 | " it blank."); |
| 1119 | module_param_array(irqs, int, &num_irqs, 0); |
| 1120 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" |
| 1121 | " addresses separated by commas. Only use if an interface" |
| 1122 | " has an interrupt. Otherwise, set it to zero or leave" |
| 1123 | " it blank."); |
| 1124 | module_param_array(regspacings, int, &num_regspacings, 0); |
| 1125 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" |
| 1126 | " and each successive register used by the interface. For" |
| 1127 | " instance, if the start address is 0xca2 and the spacing" |
| 1128 | " is 2, then the second address is at 0xca4. Defaults" |
| 1129 | " to 1."); |
| 1130 | module_param_array(regsizes, int, &num_regsizes, 0); |
| 1131 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." |
| 1132 | " This should generally be 1, 2, 4, or 8 for an 8-bit," |
| 1133 | " 16-bit, 32-bit, or 64-bit register. Use this if you" |
| 1134 | " the 8-bit IPMI register has to be read from a larger" |
| 1135 | " register."); |
| 1136 | module_param_array(regshifts, int, &num_regshifts, 0); |
| 1137 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." |
| 1138 | " IPMI register, in bits. For instance, if the data" |
| 1139 | " is read from a 32-bit word and the IPMI data is in" |
| 1140 | " bit 8-15, then the shift would be 8"); |
| 1141 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); |
| 1142 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" |
| 1143 | " the controller. Normally this is 0x20, but can be" |
| 1144 | " overridden by this parm. This is an array indexed" |
| 1145 | " by interface number."); |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1146 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
| 1147 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" |
| 1148 | " disabled(0). Normally the IPMI driver auto-detects" |
| 1149 | " this, but the value may be overridden by this parm."); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1150 | module_param(unload_when_empty, int, 0); |
| 1151 | MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are" |
| 1152 | " specified or found, default is 1. Setting to 0" |
| 1153 | " is useful for hot add of devices using hotmod."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | |
| 1155 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1156 | static void std_irq_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1158 | if (info->si_type == SI_BT) |
| 1159 | /* Disable the interrupt in the BT interface. */ |
| 1160 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); |
| 1161 | free_irq(info->irq, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | |
| 1164 | static int std_irq_setup(struct smi_info *info) |
| 1165 | { |
| 1166 | int rv; |
| 1167 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1168 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | return 0; |
| 1170 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1171 | if (info->si_type == SI_BT) { |
| 1172 | rv = request_irq(info->irq, |
| 1173 | si_bt_irq_handler, |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 1174 | IRQF_SHARED | IRQF_DISABLED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1175 | DEVICE_NAME, |
| 1176 | info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1177 | if (!rv) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1178 | /* Enable the interrupt in the BT interface. */ |
| 1179 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, |
| 1180 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
| 1181 | } else |
| 1182 | rv = request_irq(info->irq, |
| 1183 | si_irq_handler, |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 1184 | IRQF_SHARED | IRQF_DISABLED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1185 | DEVICE_NAME, |
| 1186 | info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | if (rv) { |
| 1188 | printk(KERN_WARNING |
| 1189 | "ipmi_si: %s unable to claim interrupt %d," |
| 1190 | " running polled\n", |
| 1191 | DEVICE_NAME, info->irq); |
| 1192 | info->irq = 0; |
| 1193 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1194 | info->irq_cleanup = std_irq_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | printk(" Using irq %d\n", info->irq); |
| 1196 | } |
| 1197 | |
| 1198 | return rv; |
| 1199 | } |
| 1200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | static unsigned char port_inb(struct si_sm_io *io, unsigned int offset) |
| 1202 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1203 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1205 | return inb(addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | } |
| 1207 | |
| 1208 | static void port_outb(struct si_sm_io *io, unsigned int offset, |
| 1209 | unsigned char b) |
| 1210 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1211 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1213 | outb(b, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | static unsigned char port_inw(struct si_sm_io *io, unsigned int offset) |
| 1217 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1218 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1220 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | } |
| 1222 | |
| 1223 | static void port_outw(struct si_sm_io *io, unsigned int offset, |
| 1224 | unsigned char b) |
| 1225 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1226 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1228 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | static unsigned char port_inl(struct si_sm_io *io, unsigned int offset) |
| 1232 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1233 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1235 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | } |
| 1237 | |
| 1238 | static void port_outl(struct si_sm_io *io, unsigned int offset, |
| 1239 | unsigned char b) |
| 1240 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1241 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1243 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | } |
| 1245 | |
| 1246 | static void port_cleanup(struct smi_info *info) |
| 1247 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1248 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1249 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1251 | if (addr) { |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1252 | for (idx = 0; idx < info->io_size; idx++) { |
| 1253 | release_region(addr + idx * info->io.regspacing, |
| 1254 | info->io.regsize); |
| 1255 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | } |
| 1258 | |
| 1259 | static int port_setup(struct smi_info *info) |
| 1260 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1261 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1262 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1264 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | return -ENODEV; |
| 1266 | |
| 1267 | info->io_cleanup = port_cleanup; |
| 1268 | |
| 1269 | /* Figure out the actual inb/inw/inl/etc routine to use based |
| 1270 | upon the register size. */ |
| 1271 | switch (info->io.regsize) { |
| 1272 | case 1: |
| 1273 | info->io.inputb = port_inb; |
| 1274 | info->io.outputb = port_outb; |
| 1275 | break; |
| 1276 | case 2: |
| 1277 | info->io.inputb = port_inw; |
| 1278 | info->io.outputb = port_outw; |
| 1279 | break; |
| 1280 | case 4: |
| 1281 | info->io.inputb = port_inl; |
| 1282 | info->io.outputb = port_outl; |
| 1283 | break; |
| 1284 | default: |
| 1285 | printk("ipmi_si: Invalid register size: %d\n", |
| 1286 | info->io.regsize); |
| 1287 | return -EINVAL; |
| 1288 | } |
| 1289 | |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1290 | /* Some BIOSes reserve disjoint I/O regions in their ACPI |
| 1291 | * tables. This causes problems when trying to register the |
| 1292 | * entire I/O region. Therefore we must register each I/O |
| 1293 | * port separately. |
| 1294 | */ |
| 1295 | for (idx = 0; idx < info->io_size; idx++) { |
| 1296 | if (request_region(addr + idx * info->io.regspacing, |
| 1297 | info->io.regsize, DEVICE_NAME) == NULL) { |
| 1298 | /* Undo allocations */ |
| 1299 | while (idx--) { |
| 1300 | release_region(addr + idx * info->io.regspacing, |
| 1301 | info->io.regsize); |
| 1302 | } |
| 1303 | return -EIO; |
| 1304 | } |
| 1305 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | return 0; |
| 1307 | } |
| 1308 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1309 | static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | { |
| 1311 | return readb((io->addr)+(offset * io->regspacing)); |
| 1312 | } |
| 1313 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1314 | static void intf_mem_outb(struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | unsigned char b) |
| 1316 | { |
| 1317 | writeb(b, (io->addr)+(offset * io->regspacing)); |
| 1318 | } |
| 1319 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1320 | static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | { |
| 1322 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1323 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | } |
| 1325 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1326 | static void intf_mem_outw(struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | unsigned char b) |
| 1328 | { |
| 1329 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1330 | } |
| 1331 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1332 | static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | { |
| 1334 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1335 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | } |
| 1337 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1338 | static void intf_mem_outl(struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | unsigned char b) |
| 1340 | { |
| 1341 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1342 | } |
| 1343 | |
| 1344 | #ifdef readq |
| 1345 | static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset) |
| 1346 | { |
| 1347 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1348 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | } |
| 1350 | |
| 1351 | static void mem_outq(struct si_sm_io *io, unsigned int offset, |
| 1352 | unsigned char b) |
| 1353 | { |
| 1354 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1355 | } |
| 1356 | #endif |
| 1357 | |
| 1358 | static void mem_cleanup(struct smi_info *info) |
| 1359 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1360 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | int mapsize; |
| 1362 | |
| 1363 | if (info->io.addr) { |
| 1364 | iounmap(info->io.addr); |
| 1365 | |
| 1366 | mapsize = ((info->io_size * info->io.regspacing) |
| 1367 | - (info->io.regspacing - info->io.regsize)); |
| 1368 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1369 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | } |
| 1372 | |
| 1373 | static int mem_setup(struct smi_info *info) |
| 1374 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1375 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | int mapsize; |
| 1377 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1378 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | return -ENODEV; |
| 1380 | |
| 1381 | info->io_cleanup = mem_cleanup; |
| 1382 | |
| 1383 | /* Figure out the actual readb/readw/readl/etc routine to use based |
| 1384 | upon the register size. */ |
| 1385 | switch (info->io.regsize) { |
| 1386 | case 1: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1387 | info->io.inputb = intf_mem_inb; |
| 1388 | info->io.outputb = intf_mem_outb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | break; |
| 1390 | case 2: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1391 | info->io.inputb = intf_mem_inw; |
| 1392 | info->io.outputb = intf_mem_outw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | break; |
| 1394 | case 4: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1395 | info->io.inputb = intf_mem_inl; |
| 1396 | info->io.outputb = intf_mem_outl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | break; |
| 1398 | #ifdef readq |
| 1399 | case 8: |
| 1400 | info->io.inputb = mem_inq; |
| 1401 | info->io.outputb = mem_outq; |
| 1402 | break; |
| 1403 | #endif |
| 1404 | default: |
| 1405 | printk("ipmi_si: Invalid register size: %d\n", |
| 1406 | info->io.regsize); |
| 1407 | return -EINVAL; |
| 1408 | } |
| 1409 | |
| 1410 | /* Calculate the total amount of memory to claim. This is an |
| 1411 | * unusual looking calculation, but it avoids claiming any |
| 1412 | * more memory than it has to. It will claim everything |
| 1413 | * between the first address to the end of the last full |
| 1414 | * register. */ |
| 1415 | mapsize = ((info->io_size * info->io.regspacing) |
| 1416 | - (info->io.regspacing - info->io.regsize)); |
| 1417 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1418 | if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | return -EIO; |
| 1420 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1421 | info->io.addr = ioremap(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | if (info->io.addr == NULL) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1423 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | return -EIO; |
| 1425 | } |
| 1426 | return 0; |
| 1427 | } |
| 1428 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1429 | /* |
| 1430 | * Parms come in as <op1>[:op2[:op3...]]. ops are: |
| 1431 | * add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]] |
| 1432 | * Options are: |
| 1433 | * rsp=<regspacing> |
| 1434 | * rsi=<regsize> |
| 1435 | * rsh=<regshift> |
| 1436 | * irq=<irq> |
| 1437 | * ipmb=<ipmb addr> |
| 1438 | */ |
| 1439 | enum hotmod_op { HM_ADD, HM_REMOVE }; |
| 1440 | struct hotmod_vals { |
| 1441 | char *name; |
| 1442 | int val; |
| 1443 | }; |
| 1444 | static struct hotmod_vals hotmod_ops[] = { |
| 1445 | { "add", HM_ADD }, |
| 1446 | { "remove", HM_REMOVE }, |
| 1447 | { NULL } |
| 1448 | }; |
| 1449 | static struct hotmod_vals hotmod_si[] = { |
| 1450 | { "kcs", SI_KCS }, |
| 1451 | { "smic", SI_SMIC }, |
| 1452 | { "bt", SI_BT }, |
| 1453 | { NULL } |
| 1454 | }; |
| 1455 | static struct hotmod_vals hotmod_as[] = { |
| 1456 | { "mem", IPMI_MEM_ADDR_SPACE }, |
| 1457 | { "i/o", IPMI_IO_ADDR_SPACE }, |
| 1458 | { NULL } |
| 1459 | }; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1460 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1461 | static int parse_str(struct hotmod_vals *v, int *val, char *name, char **curr) |
| 1462 | { |
| 1463 | char *s; |
| 1464 | int i; |
| 1465 | |
| 1466 | s = strchr(*curr, ','); |
| 1467 | if (!s) { |
| 1468 | printk(KERN_WARNING PFX "No hotmod %s given.\n", name); |
| 1469 | return -EINVAL; |
| 1470 | } |
| 1471 | *s = '\0'; |
| 1472 | s++; |
| 1473 | for (i = 0; hotmod_ops[i].name; i++) { |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1474 | if (strcmp(*curr, v[i].name) == 0) { |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1475 | *val = v[i].val; |
| 1476 | *curr = s; |
| 1477 | return 0; |
| 1478 | } |
| 1479 | } |
| 1480 | |
| 1481 | printk(KERN_WARNING PFX "Invalid hotmod %s '%s'\n", name, *curr); |
| 1482 | return -EINVAL; |
| 1483 | } |
| 1484 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1485 | static int check_hotmod_int_op(const char *curr, const char *option, |
| 1486 | const char *name, int *val) |
| 1487 | { |
| 1488 | char *n; |
| 1489 | |
| 1490 | if (strcmp(curr, name) == 0) { |
| 1491 | if (!option) { |
| 1492 | printk(KERN_WARNING PFX |
| 1493 | "No option given for '%s'\n", |
| 1494 | curr); |
| 1495 | return -EINVAL; |
| 1496 | } |
| 1497 | *val = simple_strtoul(option, &n, 0); |
| 1498 | if ((*n != '\0') || (*option == '\0')) { |
| 1499 | printk(KERN_WARNING PFX |
| 1500 | "Bad option given for '%s'\n", |
| 1501 | curr); |
| 1502 | return -EINVAL; |
| 1503 | } |
| 1504 | return 1; |
| 1505 | } |
| 1506 | return 0; |
| 1507 | } |
| 1508 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1509 | static int hotmod_handler(const char *val, struct kernel_param *kp) |
| 1510 | { |
| 1511 | char *str = kstrdup(val, GFP_KERNEL); |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1512 | int rv; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1513 | char *next, *curr, *s, *n, *o; |
| 1514 | enum hotmod_op op; |
| 1515 | enum si_type si_type; |
| 1516 | int addr_space; |
| 1517 | unsigned long addr; |
| 1518 | int regspacing; |
| 1519 | int regsize; |
| 1520 | int regshift; |
| 1521 | int irq; |
| 1522 | int ipmb; |
| 1523 | int ival; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1524 | int len; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1525 | struct smi_info *info; |
| 1526 | |
| 1527 | if (!str) |
| 1528 | return -ENOMEM; |
| 1529 | |
| 1530 | /* Kill any trailing spaces, as we can get a "\n" from echo. */ |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1531 | len = strlen(str); |
| 1532 | ival = len - 1; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1533 | while ((ival >= 0) && isspace(str[ival])) { |
| 1534 | str[ival] = '\0'; |
| 1535 | ival--; |
| 1536 | } |
| 1537 | |
| 1538 | for (curr = str; curr; curr = next) { |
| 1539 | regspacing = 1; |
| 1540 | regsize = 1; |
| 1541 | regshift = 0; |
| 1542 | irq = 0; |
| 1543 | ipmb = 0x20; |
| 1544 | |
| 1545 | next = strchr(curr, ':'); |
| 1546 | if (next) { |
| 1547 | *next = '\0'; |
| 1548 | next++; |
| 1549 | } |
| 1550 | |
| 1551 | rv = parse_str(hotmod_ops, &ival, "operation", &curr); |
| 1552 | if (rv) |
| 1553 | break; |
| 1554 | op = ival; |
| 1555 | |
| 1556 | rv = parse_str(hotmod_si, &ival, "interface type", &curr); |
| 1557 | if (rv) |
| 1558 | break; |
| 1559 | si_type = ival; |
| 1560 | |
| 1561 | rv = parse_str(hotmod_as, &addr_space, "address space", &curr); |
| 1562 | if (rv) |
| 1563 | break; |
| 1564 | |
| 1565 | s = strchr(curr, ','); |
| 1566 | if (s) { |
| 1567 | *s = '\0'; |
| 1568 | s++; |
| 1569 | } |
| 1570 | addr = simple_strtoul(curr, &n, 0); |
| 1571 | if ((*n != '\0') || (*curr == '\0')) { |
| 1572 | printk(KERN_WARNING PFX "Invalid hotmod address" |
| 1573 | " '%s'\n", curr); |
| 1574 | break; |
| 1575 | } |
| 1576 | |
| 1577 | while (s) { |
| 1578 | curr = s; |
| 1579 | s = strchr(curr, ','); |
| 1580 | if (s) { |
| 1581 | *s = '\0'; |
| 1582 | s++; |
| 1583 | } |
| 1584 | o = strchr(curr, '='); |
| 1585 | if (o) { |
| 1586 | *o = '\0'; |
| 1587 | o++; |
| 1588 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1589 | rv = check_hotmod_int_op(curr, o, "rsp", ®spacing); |
| 1590 | if (rv < 0) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1591 | goto out; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1592 | else if (rv) |
| 1593 | continue; |
| 1594 | rv = check_hotmod_int_op(curr, o, "rsi", ®size); |
| 1595 | if (rv < 0) |
| 1596 | goto out; |
| 1597 | else if (rv) |
| 1598 | continue; |
| 1599 | rv = check_hotmod_int_op(curr, o, "rsh", ®shift); |
| 1600 | if (rv < 0) |
| 1601 | goto out; |
| 1602 | else if (rv) |
| 1603 | continue; |
| 1604 | rv = check_hotmod_int_op(curr, o, "irq", &irq); |
| 1605 | if (rv < 0) |
| 1606 | goto out; |
| 1607 | else if (rv) |
| 1608 | continue; |
| 1609 | rv = check_hotmod_int_op(curr, o, "ipmb", &ipmb); |
| 1610 | if (rv < 0) |
| 1611 | goto out; |
| 1612 | else if (rv) |
| 1613 | continue; |
| 1614 | |
| 1615 | rv = -EINVAL; |
| 1616 | printk(KERN_WARNING PFX |
| 1617 | "Invalid hotmod option '%s'\n", |
| 1618 | curr); |
| 1619 | goto out; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1620 | } |
| 1621 | |
| 1622 | if (op == HM_ADD) { |
| 1623 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1624 | if (!info) { |
| 1625 | rv = -ENOMEM; |
| 1626 | goto out; |
| 1627 | } |
| 1628 | |
| 1629 | info->addr_source = "hotmod"; |
| 1630 | info->si_type = si_type; |
| 1631 | info->io.addr_data = addr; |
| 1632 | info->io.addr_type = addr_space; |
| 1633 | if (addr_space == IPMI_MEM_ADDR_SPACE) |
| 1634 | info->io_setup = mem_setup; |
| 1635 | else |
| 1636 | info->io_setup = port_setup; |
| 1637 | |
| 1638 | info->io.addr = NULL; |
| 1639 | info->io.regspacing = regspacing; |
| 1640 | if (!info->io.regspacing) |
| 1641 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1642 | info->io.regsize = regsize; |
| 1643 | if (!info->io.regsize) |
| 1644 | info->io.regsize = DEFAULT_REGSPACING; |
| 1645 | info->io.regshift = regshift; |
| 1646 | info->irq = irq; |
| 1647 | if (info->irq) |
| 1648 | info->irq_setup = std_irq_setup; |
| 1649 | info->slave_addr = ipmb; |
| 1650 | |
| 1651 | try_smi_init(info); |
| 1652 | } else { |
| 1653 | /* remove */ |
| 1654 | struct smi_info *e, *tmp_e; |
| 1655 | |
| 1656 | mutex_lock(&smi_infos_lock); |
| 1657 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) { |
| 1658 | if (e->io.addr_type != addr_space) |
| 1659 | continue; |
| 1660 | if (e->si_type != si_type) |
| 1661 | continue; |
| 1662 | if (e->io.addr_data == addr) |
| 1663 | cleanup_one_si(e); |
| 1664 | } |
| 1665 | mutex_unlock(&smi_infos_lock); |
| 1666 | } |
| 1667 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1668 | rv = len; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1669 | out: |
| 1670 | kfree(str); |
| 1671 | return rv; |
| 1672 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1673 | |
| 1674 | static __devinit void hardcode_find_bmc(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1676 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | struct smi_info *info; |
| 1678 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1679 | for (i = 0; i < SI_MAX_PARMS; i++) { |
| 1680 | if (!ports[i] && !addrs[i]) |
| 1681 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1683 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1684 | if (!info) |
| 1685 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1687 | info->addr_source = "hardcoded"; |
| 1688 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1689 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1690 | info->si_type = SI_KCS; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1691 | } else if (strcmp(si_type[i], "smic") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1692 | info->si_type = SI_SMIC; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1693 | } else if (strcmp(si_type[i], "bt") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1694 | info->si_type = SI_BT; |
| 1695 | } else { |
| 1696 | printk(KERN_WARNING |
| 1697 | "ipmi_si: Interface type specified " |
| 1698 | "for interface %d, was invalid: %s\n", |
| 1699 | i, si_type[i]); |
| 1700 | kfree(info); |
| 1701 | continue; |
| 1702 | } |
| 1703 | |
| 1704 | if (ports[i]) { |
| 1705 | /* An I/O port */ |
| 1706 | info->io_setup = port_setup; |
| 1707 | info->io.addr_data = ports[i]; |
| 1708 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 1709 | } else if (addrs[i]) { |
| 1710 | /* A memory port */ |
| 1711 | info->io_setup = mem_setup; |
| 1712 | info->io.addr_data = addrs[i]; |
| 1713 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 1714 | } else { |
| 1715 | printk(KERN_WARNING |
| 1716 | "ipmi_si: Interface type specified " |
| 1717 | "for interface %d, " |
| 1718 | "but port and address were not set or " |
| 1719 | "set to zero.\n", i); |
| 1720 | kfree(info); |
| 1721 | continue; |
| 1722 | } |
| 1723 | |
| 1724 | info->io.addr = NULL; |
| 1725 | info->io.regspacing = regspacings[i]; |
| 1726 | if (!info->io.regspacing) |
| 1727 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1728 | info->io.regsize = regsizes[i]; |
| 1729 | if (!info->io.regsize) |
| 1730 | info->io.regsize = DEFAULT_REGSPACING; |
| 1731 | info->io.regshift = regshifts[i]; |
| 1732 | info->irq = irqs[i]; |
| 1733 | if (info->irq) |
| 1734 | info->irq_setup = std_irq_setup; |
| 1735 | |
| 1736 | try_smi_init(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | } |
| 1739 | |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 1740 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | |
| 1742 | #include <linux/acpi.h> |
| 1743 | |
| 1744 | /* Once we get an ACPI failure, we don't try any more, because we go |
| 1745 | through the tables sequentially. Once we don't find a table, there |
| 1746 | are no more. */ |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1747 | static int acpi_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | |
| 1749 | /* For GPE-type interrupts. */ |
| 1750 | static u32 ipmi_acpi_gpe(void *context) |
| 1751 | { |
| 1752 | struct smi_info *smi_info = context; |
| 1753 | unsigned long flags; |
| 1754 | #ifdef DEBUG_TIMING |
| 1755 | struct timeval t; |
| 1756 | #endif |
| 1757 | |
| 1758 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 1759 | |
| 1760 | spin_lock(&smi_info->count_lock); |
| 1761 | smi_info->interrupts++; |
| 1762 | spin_unlock(&smi_info->count_lock); |
| 1763 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | #ifdef DEBUG_TIMING |
| 1765 | do_gettimeofday(&t); |
| 1766 | printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 1767 | #endif |
| 1768 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 1770 | |
| 1771 | return ACPI_INTERRUPT_HANDLED; |
| 1772 | } |
| 1773 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1774 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
| 1775 | { |
| 1776 | if (!info->irq) |
| 1777 | return; |
| 1778 | |
| 1779 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); |
| 1780 | } |
| 1781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | static int acpi_gpe_irq_setup(struct smi_info *info) |
| 1783 | { |
| 1784 | acpi_status status; |
| 1785 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1786 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | return 0; |
| 1788 | |
| 1789 | /* FIXME - is level triggered right? */ |
| 1790 | status = acpi_install_gpe_handler(NULL, |
| 1791 | info->irq, |
| 1792 | ACPI_GPE_LEVEL_TRIGGERED, |
| 1793 | &ipmi_acpi_gpe, |
| 1794 | info); |
| 1795 | if (status != AE_OK) { |
| 1796 | printk(KERN_WARNING |
| 1797 | "ipmi_si: %s unable to claim ACPI GPE %d," |
| 1798 | " running polled\n", |
| 1799 | DEVICE_NAME, info->irq); |
| 1800 | info->irq = 0; |
| 1801 | return -EINVAL; |
| 1802 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1803 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | printk(" Using ACPI GPE %d\n", info->irq); |
| 1805 | return 0; |
| 1806 | } |
| 1807 | } |
| 1808 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | /* |
| 1810 | * Defined at |
| 1811 | * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/TechPapers/IA64/hpspmi.pdf |
| 1812 | */ |
| 1813 | struct SPMITable { |
| 1814 | s8 Signature[4]; |
| 1815 | u32 Length; |
| 1816 | u8 Revision; |
| 1817 | u8 Checksum; |
| 1818 | s8 OEMID[6]; |
| 1819 | s8 OEMTableID[8]; |
| 1820 | s8 OEMRevision[4]; |
| 1821 | s8 CreatorID[4]; |
| 1822 | s8 CreatorRevision[4]; |
| 1823 | u8 InterfaceType; |
| 1824 | u8 IPMIlegacy; |
| 1825 | s16 SpecificationRevision; |
| 1826 | |
| 1827 | /* |
| 1828 | * Bit 0 - SCI interrupt supported |
| 1829 | * Bit 1 - I/O APIC/SAPIC |
| 1830 | */ |
| 1831 | u8 InterruptType; |
| 1832 | |
| 1833 | /* If bit 0 of InterruptType is set, then this is the SCI |
| 1834 | interrupt in the GPEx_STS register. */ |
| 1835 | u8 GPE; |
| 1836 | |
| 1837 | s16 Reserved; |
| 1838 | |
| 1839 | /* If bit 1 of InterruptType is set, then this is the I/O |
| 1840 | APIC/SAPIC interrupt. */ |
| 1841 | u32 GlobalSystemInterrupt; |
| 1842 | |
| 1843 | /* The actual register address. */ |
| 1844 | struct acpi_generic_address addr; |
| 1845 | |
| 1846 | u8 UID[4]; |
| 1847 | |
| 1848 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ |
| 1849 | }; |
| 1850 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1851 | static __devinit int try_init_acpi(struct SPMITable *spmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | { |
| 1853 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1854 | u8 addr_space; |
| 1855 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | if (spmi->IPMIlegacy != 1) { |
| 1857 | printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy); |
| 1858 | return -ENODEV; |
| 1859 | } |
| 1860 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1861 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | addr_space = IPMI_MEM_ADDR_SPACE; |
| 1863 | else |
| 1864 | addr_space = IPMI_IO_ADDR_SPACE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1865 | |
| 1866 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1867 | if (!info) { |
| 1868 | printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n"); |
| 1869 | return -ENOMEM; |
| 1870 | } |
| 1871 | |
| 1872 | info->addr_source = "ACPI"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | /* Figure out the interface type. */ |
| 1875 | switch (spmi->InterfaceType) |
| 1876 | { |
| 1877 | case 1: /* KCS */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1878 | info->si_type = SI_KCS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1880 | case 2: /* SMIC */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1881 | info->si_type = SI_SMIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | case 3: /* BT */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1884 | info->si_type = SI_BT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1886 | default: |
| 1887 | printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n", |
| 1888 | spmi->InterfaceType); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1889 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | return -EIO; |
| 1891 | } |
| 1892 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | if (spmi->InterruptType & 1) { |
| 1894 | /* We've got a GPE interrupt. */ |
| 1895 | info->irq = spmi->GPE; |
| 1896 | info->irq_setup = acpi_gpe_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | } else if (spmi->InterruptType & 2) { |
| 1898 | /* We've got an APIC/SAPIC interrupt. */ |
| 1899 | info->irq = spmi->GlobalSystemInterrupt; |
| 1900 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | } else { |
| 1902 | /* Use the default interrupt setting. */ |
| 1903 | info->irq = 0; |
| 1904 | info->irq_setup = NULL; |
| 1905 | } |
| 1906 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1907 | if (spmi->addr.bit_width) { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1908 | /* A (hopefully) properly formed register bit width. */ |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1909 | info->io.regspacing = spmi->addr.bit_width / 8; |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1910 | } else { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1911 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1912 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1913 | info->io.regsize = info->io.regspacing; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1914 | info->io.regshift = spmi->addr.bit_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1916 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1917 | info->io_setup = mem_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 1918 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1919 | } else if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | info->io_setup = port_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 1921 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | } else { |
| 1923 | kfree(info); |
| 1924 | printk("ipmi_si: Unknown ACPI I/O Address type\n"); |
| 1925 | return -EIO; |
| 1926 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1927 | info->io.addr_data = spmi->addr.address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1929 | try_smi_init(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | return 0; |
| 1932 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1933 | |
| 1934 | static __devinit void acpi_find_bmc(void) |
| 1935 | { |
| 1936 | acpi_status status; |
| 1937 | struct SPMITable *spmi; |
| 1938 | int i; |
| 1939 | |
| 1940 | if (acpi_disabled) |
| 1941 | return; |
| 1942 | |
| 1943 | if (acpi_failure) |
| 1944 | return; |
| 1945 | |
| 1946 | for (i = 0; ; i++) { |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1947 | status = acpi_get_table(ACPI_SIG_SPMI, i+1, |
| 1948 | (struct acpi_table_header **)&spmi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1949 | if (status != AE_OK) |
| 1950 | return; |
| 1951 | |
| 1952 | try_init_acpi(spmi); |
| 1953 | } |
| 1954 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | #endif |
| 1956 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 1957 | #ifdef CONFIG_DMI |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1958 | struct dmi_ipmi_data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | { |
| 1960 | u8 type; |
| 1961 | u8 addr_space; |
| 1962 | unsigned long base_addr; |
| 1963 | u8 irq; |
| 1964 | u8 offset; |
| 1965 | u8 slave_addr; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1966 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1968 | static int __devinit decode_dmi(struct dmi_header *dm, |
| 1969 | struct dmi_ipmi_data *dmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1971 | u8 *data = (u8 *)dm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | unsigned long base_addr; |
| 1973 | u8 reg_spacing; |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 1974 | u8 len = dm->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1976 | dmi->type = data[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | |
| 1978 | memcpy(&base_addr, data+8, sizeof(unsigned long)); |
| 1979 | if (len >= 0x11) { |
| 1980 | if (base_addr & 1) { |
| 1981 | /* I/O */ |
| 1982 | base_addr &= 0xFFFE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1983 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | } |
| 1985 | else { |
| 1986 | /* Memory */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1987 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | } |
| 1989 | /* If bit 4 of byte 0x10 is set, then the lsb for the address |
| 1990 | is odd. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1991 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1992 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1993 | dmi->irq = data[0x11]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1994 | |
| 1995 | /* The top two bits of byte 0x10 hold the register spacing. */ |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 1996 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | switch(reg_spacing){ |
| 1998 | case 0x00: /* Byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1999 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | break; |
| 2001 | case 0x01: /* 32-bit boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2002 | dmi->offset = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2003 | break; |
| 2004 | case 0x02: /* 16-byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2005 | dmi->offset = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | break; |
| 2007 | default: |
| 2008 | /* Some other interface, just ignore it. */ |
| 2009 | return -EIO; |
| 2010 | } |
| 2011 | } else { |
| 2012 | /* Old DMI spec. */ |
Corey Minyard | 9206880 | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2013 | /* Note that technically, the lower bit of the base |
| 2014 | * address should be 1 if the address is I/O and 0 if |
| 2015 | * the address is in memory. So many systems get that |
| 2016 | * wrong (and all that I have seen are I/O) so we just |
| 2017 | * ignore that bit and assume I/O. Systems that use |
| 2018 | * memory should use the newer spec, anyway. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2019 | dmi->base_addr = base_addr & 0xfffe; |
| 2020 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
| 2021 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2022 | } |
| 2023 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2024 | dmi->slave_addr = data[6]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2026 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | } |
| 2028 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2029 | static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2031 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2033 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2034 | if (!info) { |
| 2035 | printk(KERN_ERR |
| 2036 | "ipmi_si: Could not allocate SI data\n"); |
| 2037 | return; |
| 2038 | } |
| 2039 | |
| 2040 | info->addr_source = "SMBIOS"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2042 | switch (ipmi_data->type) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2043 | case 0x01: /* KCS */ |
| 2044 | info->si_type = SI_KCS; |
| 2045 | break; |
| 2046 | case 0x02: /* SMIC */ |
| 2047 | info->si_type = SI_SMIC; |
| 2048 | break; |
| 2049 | case 0x03: /* BT */ |
| 2050 | info->si_type = SI_BT; |
| 2051 | break; |
| 2052 | default: |
Jesper Juhl | 80cd692 | 2007-07-31 00:39:05 -0700 | [diff] [blame] | 2053 | kfree(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2054 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | } |
| 2056 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2057 | switch (ipmi_data->addr_space) { |
| 2058 | case IPMI_MEM_ADDR_SPACE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | info->io_setup = mem_setup; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2060 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2061 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2063 | case IPMI_IO_ADDR_SPACE: |
| 2064 | info->io_setup = port_setup; |
| 2065 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2066 | break; |
| 2067 | |
| 2068 | default: |
| 2069 | kfree(info); |
| 2070 | printk(KERN_WARNING |
| 2071 | "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n", |
| 2072 | ipmi_data->addr_space); |
| 2073 | return; |
| 2074 | } |
| 2075 | info->io.addr_data = ipmi_data->base_addr; |
| 2076 | |
| 2077 | info->io.regspacing = ipmi_data->offset; |
| 2078 | if (!info->io.regspacing) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2080 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2081 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | |
| 2083 | info->slave_addr = ipmi_data->slave_addr; |
| 2084 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2085 | info->irq = ipmi_data->irq; |
| 2086 | if (info->irq) |
| 2087 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2089 | try_smi_init(info); |
| 2090 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2092 | static void __devinit dmi_find_bmc(void) |
| 2093 | { |
| 2094 | struct dmi_device *dev = NULL; |
| 2095 | struct dmi_ipmi_data data; |
| 2096 | int rv; |
| 2097 | |
| 2098 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { |
Jeff Garzik | 397f4eb | 2006-10-03 01:13:52 -0700 | [diff] [blame] | 2099 | memset(&data, 0, sizeof(data)); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2100 | rv = decode_dmi((struct dmi_header *) dev->device_data, &data); |
| 2101 | if (!rv) |
| 2102 | try_init_dmi(&data); |
| 2103 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | } |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2105 | #endif /* CONFIG_DMI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | |
| 2107 | #ifdef CONFIG_PCI |
| 2108 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2109 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
| 2110 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 |
| 2111 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff |
| 2112 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 |
| 2113 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 |
| 2114 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 |
| 2115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2116 | #define PCI_HP_VENDOR_ID 0x103C |
| 2117 | #define PCI_MMC_DEVICE_ID 0x121A |
| 2118 | #define PCI_MMC_ADDR_CW 0x10 |
| 2119 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2120 | static void ipmi_pci_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2122 | struct pci_dev *pdev = info->addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2123 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2124 | pci_disable_device(pdev); |
| 2125 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2127 | static int __devinit ipmi_pci_probe(struct pci_dev *pdev, |
| 2128 | const struct pci_device_id *ent) |
| 2129 | { |
| 2130 | int rv; |
| 2131 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; |
| 2132 | struct smi_info *info; |
| 2133 | int first_reg_offset = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2135 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2136 | if (!info) |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2137 | return -ENOMEM; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2138 | |
| 2139 | info->addr_source = "PCI"; |
| 2140 | |
| 2141 | switch (class_type) { |
| 2142 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: |
| 2143 | info->si_type = SI_SMIC; |
| 2144 | break; |
| 2145 | |
| 2146 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
| 2147 | info->si_type = SI_KCS; |
| 2148 | break; |
| 2149 | |
| 2150 | case PCI_ERMC_CLASSCODE_TYPE_BT: |
| 2151 | info->si_type = SI_BT; |
| 2152 | break; |
| 2153 | |
| 2154 | default: |
| 2155 | kfree(info); |
| 2156 | printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n", |
| 2157 | pci_name(pdev), class_type); |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2158 | return -ENOMEM; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2159 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2161 | rv = pci_enable_device(pdev); |
| 2162 | if (rv) { |
| 2163 | printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n", |
| 2164 | pci_name(pdev)); |
| 2165 | kfree(info); |
| 2166 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2167 | } |
| 2168 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2169 | info->addr_source_cleanup = ipmi_pci_cleanup; |
| 2170 | info->addr_source_data = pdev; |
| 2171 | |
| 2172 | if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID) |
| 2173 | first_reg_offset = 1; |
| 2174 | |
| 2175 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
| 2176 | info->io_setup = port_setup; |
| 2177 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2178 | } else { |
| 2179 | info->io_setup = mem_setup; |
| 2180 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2182 | info->io.addr_data = pci_resource_start(pdev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2184 | info->io.regspacing = DEFAULT_REGSPACING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2186 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2188 | info->irq = pdev->irq; |
| 2189 | if (info->irq) |
| 2190 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2192 | info->dev = &pdev->dev; |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2193 | pci_set_drvdata(pdev, info); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2194 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2195 | return try_smi_init(info); |
| 2196 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2198 | static void __devexit ipmi_pci_remove(struct pci_dev *pdev) |
| 2199 | { |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2200 | struct smi_info *info = pci_get_drvdata(pdev); |
| 2201 | cleanup_one_si(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2202 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2204 | #ifdef CONFIG_PM |
| 2205 | static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| 2206 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | return 0; |
| 2208 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2210 | static int ipmi_pci_resume(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2212 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2214 | #endif |
| 2215 | |
| 2216 | static struct pci_device_id ipmi_pci_devices[] = { |
| 2217 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, |
Yvan Seth | d13adb6 | 2006-11-02 22:07:13 -0800 | [diff] [blame] | 2218 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2219 | }; |
| 2220 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); |
| 2221 | |
| 2222 | static struct pci_driver ipmi_pci_driver = { |
| 2223 | .name = DEVICE_NAME, |
| 2224 | .id_table = ipmi_pci_devices, |
| 2225 | .probe = ipmi_pci_probe, |
| 2226 | .remove = __devexit_p(ipmi_pci_remove), |
| 2227 | #ifdef CONFIG_PM |
| 2228 | .suspend = ipmi_pci_suspend, |
| 2229 | .resume = ipmi_pci_resume, |
| 2230 | #endif |
| 2231 | }; |
| 2232 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | |
| 2234 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2235 | #ifdef CONFIG_PPC_OF |
| 2236 | static int __devinit ipmi_of_probe(struct of_device *dev, |
| 2237 | const struct of_device_id *match) |
| 2238 | { |
| 2239 | struct smi_info *info; |
| 2240 | struct resource resource; |
| 2241 | const int *regsize, *regspacing, *regshift; |
| 2242 | struct device_node *np = dev->node; |
| 2243 | int ret; |
| 2244 | int proplen; |
| 2245 | |
| 2246 | dev_info(&dev->dev, PFX "probing via device tree\n"); |
| 2247 | |
| 2248 | ret = of_address_to_resource(np, 0, &resource); |
| 2249 | if (ret) { |
| 2250 | dev_warn(&dev->dev, PFX "invalid address from OF\n"); |
| 2251 | return ret; |
| 2252 | } |
| 2253 | |
| 2254 | regsize = get_property(np, "reg-size", &proplen); |
| 2255 | if (regsize && proplen != 4) { |
| 2256 | dev_warn(&dev->dev, PFX "invalid regsize from OF\n"); |
| 2257 | return -EINVAL; |
| 2258 | } |
| 2259 | |
| 2260 | regspacing = get_property(np, "reg-spacing", &proplen); |
| 2261 | if (regspacing && proplen != 4) { |
| 2262 | dev_warn(&dev->dev, PFX "invalid regspacing from OF\n"); |
| 2263 | return -EINVAL; |
| 2264 | } |
| 2265 | |
| 2266 | regshift = get_property(np, "reg-shift", &proplen); |
| 2267 | if (regshift && proplen != 4) { |
| 2268 | dev_warn(&dev->dev, PFX "invalid regshift from OF\n"); |
| 2269 | return -EINVAL; |
| 2270 | } |
| 2271 | |
| 2272 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2273 | |
| 2274 | if (!info) { |
| 2275 | dev_err(&dev->dev, |
| 2276 | PFX "could not allocate memory for OF probe\n"); |
| 2277 | return -ENOMEM; |
| 2278 | } |
| 2279 | |
| 2280 | info->si_type = (enum si_type) match->data; |
| 2281 | info->addr_source = "device-tree"; |
| 2282 | info->io_setup = mem_setup; |
| 2283 | info->irq_setup = std_irq_setup; |
| 2284 | |
| 2285 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2286 | info->io.addr_data = resource.start; |
| 2287 | |
| 2288 | info->io.regsize = regsize ? *regsize : DEFAULT_REGSIZE; |
| 2289 | info->io.regspacing = regspacing ? *regspacing : DEFAULT_REGSPACING; |
| 2290 | info->io.regshift = regshift ? *regshift : 0; |
| 2291 | |
| 2292 | info->irq = irq_of_parse_and_map(dev->node, 0); |
| 2293 | info->dev = &dev->dev; |
| 2294 | |
Mijo Safradin | 32d2198 | 2007-08-22 14:01:48 -0700 | [diff] [blame^] | 2295 | dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %x\n", |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2296 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2297 | info->irq); |
| 2298 | |
| 2299 | dev->dev.driver_data = (void*) info; |
| 2300 | |
| 2301 | return try_smi_init(info); |
| 2302 | } |
| 2303 | |
| 2304 | static int __devexit ipmi_of_remove(struct of_device *dev) |
| 2305 | { |
| 2306 | cleanup_one_si(dev->dev.driver_data); |
| 2307 | return 0; |
| 2308 | } |
| 2309 | |
| 2310 | static struct of_device_id ipmi_match[] = |
| 2311 | { |
| 2312 | { .type = "ipmi", .compatible = "ipmi-kcs", .data = (void *)(unsigned long) SI_KCS }, |
| 2313 | { .type = "ipmi", .compatible = "ipmi-smic", .data = (void *)(unsigned long) SI_SMIC }, |
| 2314 | { .type = "ipmi", .compatible = "ipmi-bt", .data = (void *)(unsigned long) SI_BT }, |
| 2315 | {}, |
| 2316 | }; |
| 2317 | |
| 2318 | static struct of_platform_driver ipmi_of_platform_driver = |
| 2319 | { |
| 2320 | .name = "ipmi", |
| 2321 | .match_table = ipmi_match, |
| 2322 | .probe = ipmi_of_probe, |
| 2323 | .remove = __devexit_p(ipmi_of_remove), |
| 2324 | }; |
| 2325 | #endif /* CONFIG_PPC_OF */ |
| 2326 | |
| 2327 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | static int try_get_dev_id(struct smi_info *smi_info) |
| 2329 | { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2330 | unsigned char msg[2]; |
| 2331 | unsigned char *resp; |
| 2332 | unsigned long resp_len; |
| 2333 | enum si_sm_result smi_result; |
| 2334 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | |
| 2336 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2337 | if (!resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | return -ENOMEM; |
| 2339 | |
| 2340 | /* Do a Get Device ID command, since it comes back with some |
| 2341 | useful info. */ |
| 2342 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 2343 | msg[1] = IPMI_GET_DEVICE_ID_CMD; |
| 2344 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 2345 | |
| 2346 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 2347 | for (;;) |
| 2348 | { |
Corey Minyard | c3e7e79 | 2005-11-07 01:00:02 -0800 | [diff] [blame] | 2349 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
| 2350 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 2351 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2352 | smi_result = smi_info->handlers->event( |
| 2353 | smi_info->si_sm, 100); |
| 2354 | } |
| 2355 | else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) |
| 2356 | { |
| 2357 | smi_result = smi_info->handlers->event( |
| 2358 | smi_info->si_sm, 0); |
| 2359 | } |
| 2360 | else |
| 2361 | break; |
| 2362 | } |
| 2363 | if (smi_result == SI_SM_HOSED) { |
| 2364 | /* We couldn't get the state machine to run, so whatever's at |
| 2365 | the port is probably not an IPMI SMI interface. */ |
| 2366 | rv = -ENODEV; |
| 2367 | goto out; |
| 2368 | } |
| 2369 | |
| 2370 | /* Otherwise, we got some data. */ |
| 2371 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 2372 | resp, IPMI_MAX_MSG_LENGTH); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2373 | if (resp_len < 14) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | /* That's odd, it should be longer. */ |
| 2375 | rv = -EINVAL; |
| 2376 | goto out; |
| 2377 | } |
| 2378 | |
| 2379 | if ((resp[1] != IPMI_GET_DEVICE_ID_CMD) || (resp[2] != 0)) { |
| 2380 | /* That's odd, it shouldn't be able to fail. */ |
| 2381 | rv = -EINVAL; |
| 2382 | goto out; |
| 2383 | } |
| 2384 | |
| 2385 | /* Record info from the get device id, in case we need it. */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2386 | ipmi_demangle_device_id(resp+3, resp_len-3, &smi_info->device_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2387 | |
| 2388 | out: |
| 2389 | kfree(resp); |
| 2390 | return rv; |
| 2391 | } |
| 2392 | |
| 2393 | static int type_file_read_proc(char *page, char **start, off_t off, |
| 2394 | int count, int *eof, void *data) |
| 2395 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2396 | struct smi_info *smi = data; |
| 2397 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2398 | return sprintf(page, "%s\n", si_to_str[smi->si_type]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | } |
| 2400 | |
| 2401 | static int stat_file_read_proc(char *page, char **start, off_t off, |
| 2402 | int count, int *eof, void *data) |
| 2403 | { |
| 2404 | char *out = (char *) page; |
| 2405 | struct smi_info *smi = data; |
| 2406 | |
| 2407 | out += sprintf(out, "interrupts_enabled: %d\n", |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2408 | smi->irq && !smi->interrupt_disabled); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2409 | out += sprintf(out, "short_timeouts: %ld\n", |
| 2410 | smi->short_timeouts); |
| 2411 | out += sprintf(out, "long_timeouts: %ld\n", |
| 2412 | smi->long_timeouts); |
| 2413 | out += sprintf(out, "timeout_restarts: %ld\n", |
| 2414 | smi->timeout_restarts); |
| 2415 | out += sprintf(out, "idles: %ld\n", |
| 2416 | smi->idles); |
| 2417 | out += sprintf(out, "interrupts: %ld\n", |
| 2418 | smi->interrupts); |
| 2419 | out += sprintf(out, "attentions: %ld\n", |
| 2420 | smi->attentions); |
| 2421 | out += sprintf(out, "flag_fetches: %ld\n", |
| 2422 | smi->flag_fetches); |
| 2423 | out += sprintf(out, "hosed_count: %ld\n", |
| 2424 | smi->hosed_count); |
| 2425 | out += sprintf(out, "complete_transactions: %ld\n", |
| 2426 | smi->complete_transactions); |
| 2427 | out += sprintf(out, "events: %ld\n", |
| 2428 | smi->events); |
| 2429 | out += sprintf(out, "watchdog_pretimeouts: %ld\n", |
| 2430 | smi->watchdog_pretimeouts); |
| 2431 | out += sprintf(out, "incoming_messages: %ld\n", |
| 2432 | smi->incoming_messages); |
| 2433 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2434 | return out - page; |
| 2435 | } |
| 2436 | |
| 2437 | static int param_read_proc(char *page, char **start, off_t off, |
| 2438 | int count, int *eof, void *data) |
| 2439 | { |
| 2440 | struct smi_info *smi = data; |
| 2441 | |
| 2442 | return sprintf(page, |
| 2443 | "%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n", |
| 2444 | si_to_str[smi->si_type], |
| 2445 | addr_space_to_str[smi->io.addr_type], |
| 2446 | smi->io.addr_data, |
| 2447 | smi->io.regspacing, |
| 2448 | smi->io.regsize, |
| 2449 | smi->io.regshift, |
| 2450 | smi->irq, |
| 2451 | smi->slave_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2452 | } |
| 2453 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2454 | /* |
| 2455 | * oem_data_avail_to_receive_msg_avail |
| 2456 | * @info - smi_info structure with msg_flags set |
| 2457 | * |
| 2458 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL |
| 2459 | * Returns 1 indicating need to re-run handle_flags(). |
| 2460 | */ |
| 2461 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) |
| 2462 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2463 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
| 2464 | RECEIVE_MSG_AVAIL); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2465 | return 1; |
| 2466 | } |
| 2467 | |
| 2468 | /* |
| 2469 | * setup_dell_poweredge_oem_data_handler |
| 2470 | * @info - smi_info.device_id must be populated |
| 2471 | * |
| 2472 | * Systems that match, but have firmware version < 1.40 may assert |
| 2473 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that |
| 2474 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL |
| 2475 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags |
| 2476 | * as RECEIVE_MSG_AVAIL instead. |
| 2477 | * |
| 2478 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* |
| 2479 | * assert the OEM[012] bits, and if it did, the driver would have to |
| 2480 | * change to handle that properly, we don't actually check for the |
| 2481 | * firmware version. |
| 2482 | * Device ID = 0x20 BMC on PowerEdge 8G servers |
| 2483 | * Device Revision = 0x80 |
| 2484 | * Firmware Revision1 = 0x01 BMC version 1.40 |
| 2485 | * Firmware Revision2 = 0x40 BCD encoded |
| 2486 | * IPMI Version = 0x51 IPMI 1.5 |
| 2487 | * Manufacturer ID = A2 02 00 Dell IANA |
| 2488 | * |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2489 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
| 2490 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. |
| 2491 | * |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2492 | */ |
| 2493 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 |
| 2494 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 |
| 2495 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2496 | #define DELL_IANA_MFR_ID 0x0002a2 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2497 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
| 2498 | { |
| 2499 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2500 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2501 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
| 2502 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2503 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2504 | smi_info->oem_data_avail_handler = |
| 2505 | oem_data_avail_to_receive_msg_avail; |
| 2506 | } |
| 2507 | else if (ipmi_version_major(id) < 1 || |
| 2508 | (ipmi_version_major(id) == 1 && |
| 2509 | ipmi_version_minor(id) < 5)) { |
| 2510 | smi_info->oem_data_avail_handler = |
| 2511 | oem_data_avail_to_receive_msg_avail; |
| 2512 | } |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2513 | } |
| 2514 | } |
| 2515 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2516 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
| 2517 | static void return_hosed_msg_badsize(struct smi_info *smi_info) |
| 2518 | { |
| 2519 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 2520 | |
| 2521 | /* Make it a reponse */ |
| 2522 | msg->rsp[0] = msg->data[0] | 4; |
| 2523 | msg->rsp[1] = msg->data[1]; |
| 2524 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; |
| 2525 | msg->rsp_size = 3; |
| 2526 | smi_info->curr_msg = NULL; |
| 2527 | deliver_recv_msg(smi_info, msg); |
| 2528 | } |
| 2529 | |
| 2530 | /* |
| 2531 | * dell_poweredge_bt_xaction_handler |
| 2532 | * @info - smi_info.device_id must be populated |
| 2533 | * |
| 2534 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will |
| 2535 | * not respond to a Get SDR command if the length of the data |
| 2536 | * requested is exactly 0x3A, which leads to command timeouts and no |
| 2537 | * data returned. This intercepts such commands, and causes userspace |
| 2538 | * callers to try again with a different-sized buffer, which succeeds. |
| 2539 | */ |
| 2540 | |
| 2541 | #define STORAGE_NETFN 0x0A |
| 2542 | #define STORAGE_CMD_GET_SDR 0x23 |
| 2543 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, |
| 2544 | unsigned long unused, |
| 2545 | void *in) |
| 2546 | { |
| 2547 | struct smi_info *smi_info = in; |
| 2548 | unsigned char *data = smi_info->curr_msg->data; |
| 2549 | unsigned int size = smi_info->curr_msg->data_size; |
| 2550 | if (size >= 8 && |
| 2551 | (data[0]>>2) == STORAGE_NETFN && |
| 2552 | data[1] == STORAGE_CMD_GET_SDR && |
| 2553 | data[7] == 0x3A) { |
| 2554 | return_hosed_msg_badsize(smi_info); |
| 2555 | return NOTIFY_STOP; |
| 2556 | } |
| 2557 | return NOTIFY_DONE; |
| 2558 | } |
| 2559 | |
| 2560 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { |
| 2561 | .notifier_call = dell_poweredge_bt_xaction_handler, |
| 2562 | }; |
| 2563 | |
| 2564 | /* |
| 2565 | * setup_dell_poweredge_bt_xaction_handler |
| 2566 | * @info - smi_info.device_id must be filled in already |
| 2567 | * |
| 2568 | * Fills in smi_info.device_id.start_transaction_pre_hook |
| 2569 | * when we know what function to use there. |
| 2570 | */ |
| 2571 | static void |
| 2572 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) |
| 2573 | { |
| 2574 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2575 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2576 | smi_info->si_type == SI_BT) |
| 2577 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); |
| 2578 | } |
| 2579 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2580 | /* |
| 2581 | * setup_oem_data_handler |
| 2582 | * @info - smi_info.device_id must be filled in already |
| 2583 | * |
| 2584 | * Fills in smi_info.device_id.oem_data_available_handler |
| 2585 | * when we know what function to use there. |
| 2586 | */ |
| 2587 | |
| 2588 | static void setup_oem_data_handler(struct smi_info *smi_info) |
| 2589 | { |
| 2590 | setup_dell_poweredge_oem_data_handler(smi_info); |
| 2591 | } |
| 2592 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2593 | static void setup_xaction_handlers(struct smi_info *smi_info) |
| 2594 | { |
| 2595 | setup_dell_poweredge_bt_xaction_handler(smi_info); |
| 2596 | } |
| 2597 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2598 | static inline void wait_for_timer_and_thread(struct smi_info *smi_info) |
| 2599 | { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2600 | if (smi_info->intf) { |
| 2601 | /* The timer and thread are only running if the |
| 2602 | interface has been started up and registered. */ |
| 2603 | if (smi_info->thread != NULL) |
| 2604 | kthread_stop(smi_info->thread); |
| 2605 | del_timer_sync(&smi_info->si_timer); |
| 2606 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2607 | } |
| 2608 | |
Randy Dunlap | 7420884 | 2006-04-18 22:21:52 -0700 | [diff] [blame] | 2609 | static __devinitdata struct ipmi_default_vals |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2610 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2611 | int type; |
| 2612 | int port; |
Randy Dunlap | 7420884 | 2006-04-18 22:21:52 -0700 | [diff] [blame] | 2613 | } ipmi_defaults[] = |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2614 | { |
| 2615 | { .type = SI_KCS, .port = 0xca2 }, |
| 2616 | { .type = SI_SMIC, .port = 0xca9 }, |
| 2617 | { .type = SI_BT, .port = 0xe4 }, |
| 2618 | { .port = 0 } |
| 2619 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2620 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2621 | static __devinit void default_find_bmc(void) |
| 2622 | { |
| 2623 | struct smi_info *info; |
| 2624 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2625 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2626 | for (i = 0; ; i++) { |
| 2627 | if (!ipmi_defaults[i].port) |
| 2628 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2630 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2631 | if (!info) |
| 2632 | return; |
| 2633 | |
Christian Krafft | 4ff31d7 | 2007-03-05 00:30:48 -0800 | [diff] [blame] | 2634 | #ifdef CONFIG_PPC_MERGE |
| 2635 | if (check_legacy_ioport(ipmi_defaults[i].port)) |
| 2636 | continue; |
| 2637 | #endif |
| 2638 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2639 | info->addr_source = NULL; |
| 2640 | |
| 2641 | info->si_type = ipmi_defaults[i].type; |
| 2642 | info->io_setup = port_setup; |
| 2643 | info->io.addr_data = ipmi_defaults[i].port; |
| 2644 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2645 | |
| 2646 | info->io.addr = NULL; |
| 2647 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2648 | info->io.regsize = DEFAULT_REGSPACING; |
| 2649 | info->io.regshift = 0; |
| 2650 | |
| 2651 | if (try_smi_init(info) == 0) { |
| 2652 | /* Found one... */ |
| 2653 | printk(KERN_INFO "ipmi_si: Found default %s state" |
| 2654 | " machine at %s address 0x%lx\n", |
| 2655 | si_to_str[info->si_type], |
| 2656 | addr_space_to_str[info->io.addr_type], |
| 2657 | info->io.addr_data); |
| 2658 | return; |
| 2659 | } |
| 2660 | } |
| 2661 | } |
| 2662 | |
| 2663 | static int is_new_interface(struct smi_info *info) |
| 2664 | { |
| 2665 | struct smi_info *e; |
| 2666 | |
| 2667 | list_for_each_entry(e, &smi_infos, link) { |
| 2668 | if (e->io.addr_type != info->io.addr_type) |
| 2669 | continue; |
| 2670 | if (e->io.addr_data == info->io.addr_data) |
| 2671 | return 0; |
| 2672 | } |
| 2673 | |
| 2674 | return 1; |
| 2675 | } |
| 2676 | |
| 2677 | static int try_smi_init(struct smi_info *new_smi) |
| 2678 | { |
| 2679 | int rv; |
| 2680 | |
| 2681 | if (new_smi->addr_source) { |
| 2682 | printk(KERN_INFO "ipmi_si: Trying %s-specified %s state" |
| 2683 | " machine at %s address 0x%lx, slave address 0x%x," |
| 2684 | " irq %d\n", |
| 2685 | new_smi->addr_source, |
| 2686 | si_to_str[new_smi->si_type], |
| 2687 | addr_space_to_str[new_smi->io.addr_type], |
| 2688 | new_smi->io.addr_data, |
| 2689 | new_smi->slave_addr, new_smi->irq); |
| 2690 | } |
| 2691 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2692 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2693 | if (!is_new_interface(new_smi)) { |
| 2694 | printk(KERN_WARNING "ipmi_si: duplicate interface\n"); |
| 2695 | rv = -EBUSY; |
| 2696 | goto out_err; |
| 2697 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | |
| 2699 | /* So we know not to free it unless we have allocated one. */ |
| 2700 | new_smi->intf = NULL; |
| 2701 | new_smi->si_sm = NULL; |
| 2702 | new_smi->handlers = NULL; |
| 2703 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2704 | switch (new_smi->si_type) { |
| 2705 | case SI_KCS: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2706 | new_smi->handlers = &kcs_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2707 | break; |
| 2708 | |
| 2709 | case SI_SMIC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2710 | new_smi->handlers = &smic_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2711 | break; |
| 2712 | |
| 2713 | case SI_BT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2714 | new_smi->handlers = &bt_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2715 | break; |
| 2716 | |
| 2717 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2718 | /* No support for anything else yet. */ |
| 2719 | rv = -EIO; |
| 2720 | goto out_err; |
| 2721 | } |
| 2722 | |
| 2723 | /* Allocate the state machine's data and initialize it. */ |
| 2724 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2725 | if (!new_smi->si_sm) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2726 | printk(" Could not allocate state machine memory\n"); |
| 2727 | rv = -ENOMEM; |
| 2728 | goto out_err; |
| 2729 | } |
| 2730 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, |
| 2731 | &new_smi->io); |
| 2732 | |
| 2733 | /* Now that we know the I/O size, we can set up the I/O. */ |
| 2734 | rv = new_smi->io_setup(new_smi); |
| 2735 | if (rv) { |
| 2736 | printk(" Could not set up I/O space\n"); |
| 2737 | goto out_err; |
| 2738 | } |
| 2739 | |
| 2740 | spin_lock_init(&(new_smi->si_lock)); |
| 2741 | spin_lock_init(&(new_smi->msg_lock)); |
| 2742 | spin_lock_init(&(new_smi->count_lock)); |
| 2743 | |
| 2744 | /* Do low-level detection first. */ |
| 2745 | if (new_smi->handlers->detect(new_smi->si_sm)) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2746 | if (new_smi->addr_source) |
| 2747 | printk(KERN_INFO "ipmi_si: Interface detection" |
| 2748 | " failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2749 | rv = -ENODEV; |
| 2750 | goto out_err; |
| 2751 | } |
| 2752 | |
| 2753 | /* Attempt a get device id command. If it fails, we probably |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2754 | don't have a BMC here. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | rv = try_get_dev_id(new_smi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2756 | if (rv) { |
| 2757 | if (new_smi->addr_source) |
| 2758 | printk(KERN_INFO "ipmi_si: There appears to be no BMC" |
| 2759 | " at this location\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | goto out_err; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2761 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2763 | setup_oem_data_handler(new_smi); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2764 | setup_xaction_handlers(new_smi); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2765 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2766 | /* Try to claim any interrupts. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2767 | if (new_smi->irq_setup) |
| 2768 | new_smi->irq_setup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2769 | |
| 2770 | INIT_LIST_HEAD(&(new_smi->xmit_msgs)); |
| 2771 | INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs)); |
| 2772 | new_smi->curr_msg = NULL; |
| 2773 | atomic_set(&new_smi->req_events, 0); |
| 2774 | new_smi->run_to_completion = 0; |
| 2775 | |
| 2776 | new_smi->interrupt_disabled = 0; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2777 | atomic_set(&new_smi->stop_operation, 0); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2778 | new_smi->intf_num = smi_num; |
| 2779 | smi_num++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | |
| 2781 | /* Start clearing the flags before we enable interrupts or the |
| 2782 | timer to avoid racing with the timer. */ |
| 2783 | start_clear_flags(new_smi); |
| 2784 | /* IRQ is defined to be set when non-zero. */ |
| 2785 | if (new_smi->irq) |
| 2786 | new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ; |
| 2787 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2788 | if (!new_smi->dev) { |
| 2789 | /* If we don't already have a device from something |
| 2790 | * else (like PCI), then register a new one. */ |
| 2791 | new_smi->pdev = platform_device_alloc("ipmi_si", |
| 2792 | new_smi->intf_num); |
| 2793 | if (rv) { |
| 2794 | printk(KERN_ERR |
| 2795 | "ipmi_si_intf:" |
| 2796 | " Unable to allocate platform device\n"); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2797 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2798 | } |
| 2799 | new_smi->dev = &new_smi->pdev->dev; |
| 2800 | new_smi->dev->driver = &ipmi_driver; |
| 2801 | |
Zhang, Yanmin | b48f545 | 2006-11-16 01:19:08 -0800 | [diff] [blame] | 2802 | rv = platform_device_add(new_smi->pdev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2803 | if (rv) { |
| 2804 | printk(KERN_ERR |
| 2805 | "ipmi_si_intf:" |
| 2806 | " Unable to register system interface device:" |
| 2807 | " %d\n", |
| 2808 | rv); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2809 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2810 | } |
| 2811 | new_smi->dev_registered = 1; |
| 2812 | } |
| 2813 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | rv = ipmi_register_smi(&handlers, |
| 2815 | new_smi, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2816 | &new_smi->device_id, |
| 2817 | new_smi->dev, |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2818 | "bmc", |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2819 | new_smi->slave_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | if (rv) { |
| 2821 | printk(KERN_ERR |
| 2822 | "ipmi_si: Unable to register device: error %d\n", |
| 2823 | rv); |
| 2824 | goto out_err_stop_timer; |
| 2825 | } |
| 2826 | |
| 2827 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", |
| 2828 | type_file_read_proc, NULL, |
| 2829 | new_smi, THIS_MODULE); |
| 2830 | if (rv) { |
| 2831 | printk(KERN_ERR |
| 2832 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2833 | rv); |
| 2834 | goto out_err_stop_timer; |
| 2835 | } |
| 2836 | |
| 2837 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", |
| 2838 | stat_file_read_proc, NULL, |
| 2839 | new_smi, THIS_MODULE); |
| 2840 | if (rv) { |
| 2841 | printk(KERN_ERR |
| 2842 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2843 | rv); |
| 2844 | goto out_err_stop_timer; |
| 2845 | } |
| 2846 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2847 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", |
| 2848 | param_read_proc, NULL, |
| 2849 | new_smi, THIS_MODULE); |
| 2850 | if (rv) { |
| 2851 | printk(KERN_ERR |
| 2852 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2853 | rv); |
| 2854 | goto out_err_stop_timer; |
| 2855 | } |
| 2856 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2857 | list_add_tail(&new_smi->link, &smi_infos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2859 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2860 | |
Dan Aloni | 8f14137 | 2007-07-15 23:41:57 -0700 | [diff] [blame] | 2861 | printk(KERN_INFO "IPMI %s interface initialized\n",si_to_str[new_smi->si_type]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | |
| 2863 | return 0; |
| 2864 | |
| 2865 | out_err_stop_timer: |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2866 | atomic_inc(&new_smi->stop_operation); |
| 2867 | wait_for_timer_and_thread(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | |
| 2869 | out_err: |
| 2870 | if (new_smi->intf) |
| 2871 | ipmi_unregister_smi(new_smi->intf); |
| 2872 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2873 | if (new_smi->irq_cleanup) |
| 2874 | new_smi->irq_cleanup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2875 | |
| 2876 | /* Wait until we know that we are out of any interrupt |
| 2877 | handlers might have been running before we freed the |
| 2878 | interrupt. */ |
Paul E. McKenney | fbd568a3e | 2005-05-01 08:59:04 -0700 | [diff] [blame] | 2879 | synchronize_sched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2880 | |
| 2881 | if (new_smi->si_sm) { |
| 2882 | if (new_smi->handlers) |
| 2883 | new_smi->handlers->cleanup(new_smi->si_sm); |
| 2884 | kfree(new_smi->si_sm); |
| 2885 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2886 | if (new_smi->addr_source_cleanup) |
| 2887 | new_smi->addr_source_cleanup(new_smi); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 2888 | if (new_smi->io_cleanup) |
| 2889 | new_smi->io_cleanup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2891 | if (new_smi->dev_registered) |
| 2892 | platform_device_unregister(new_smi->pdev); |
| 2893 | |
| 2894 | kfree(new_smi); |
| 2895 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2896 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2897 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | return rv; |
| 2899 | } |
| 2900 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2901 | static __devinit int init_ipmi_si(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2902 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | int i; |
| 2904 | char *str; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2905 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | |
| 2907 | if (initialized) |
| 2908 | return 0; |
| 2909 | initialized = 1; |
| 2910 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2911 | /* Register the device drivers. */ |
| 2912 | rv = driver_register(&ipmi_driver); |
| 2913 | if (rv) { |
| 2914 | printk(KERN_ERR |
| 2915 | "init_ipmi_si: Unable to register driver: %d\n", |
| 2916 | rv); |
| 2917 | return rv; |
| 2918 | } |
| 2919 | |
| 2920 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2921 | /* Parse out the si_type string into its components. */ |
| 2922 | str = si_type_str; |
| 2923 | if (*str != '\0') { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2924 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2925 | si_type[i] = str; |
| 2926 | str = strchr(str, ','); |
| 2927 | if (str) { |
| 2928 | *str = '\0'; |
| 2929 | str++; |
| 2930 | } else { |
| 2931 | break; |
| 2932 | } |
| 2933 | } |
| 2934 | } |
| 2935 | |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2936 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2938 | hardcode_find_bmc(); |
| 2939 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2940 | #ifdef CONFIG_DMI |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2941 | dmi_find_bmc(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2942 | #endif |
| 2943 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2944 | #ifdef CONFIG_ACPI |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2945 | acpi_find_bmc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2946 | #endif |
| 2947 | |
| 2948 | #ifdef CONFIG_PCI |
Corey Minyard | 168b35a | 2006-12-06 20:41:11 -0800 | [diff] [blame] | 2949 | rv = pci_register_driver(&ipmi_pci_driver); |
| 2950 | if (rv){ |
| 2951 | printk(KERN_ERR |
| 2952 | "init_ipmi_si: Unable to register PCI driver: %d\n", |
| 2953 | rv); |
| 2954 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2955 | #endif |
| 2956 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2957 | #ifdef CONFIG_PPC_OF |
| 2958 | of_register_platform_driver(&ipmi_of_platform_driver); |
| 2959 | #endif |
| 2960 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2961 | if (si_trydefaults) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2962 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2963 | if (list_empty(&smi_infos)) { |
| 2964 | /* No BMC was found, try defaults. */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2965 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2966 | default_find_bmc(); |
| 2967 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2968 | mutex_unlock(&smi_infos_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | } |
| 2970 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2972 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2973 | if (unload_when_empty && list_empty(&smi_infos)) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2974 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2975 | #ifdef CONFIG_PCI |
| 2976 | pci_unregister_driver(&ipmi_pci_driver); |
| 2977 | #endif |
Christian Krafft | 10fb62e | 2007-05-12 10:37:01 -0700 | [diff] [blame] | 2978 | |
| 2979 | #ifdef CONFIG_PPC_OF |
| 2980 | of_unregister_platform_driver(&ipmi_of_platform_driver); |
| 2981 | #endif |
Arnaud Patard | 55ebcc3 | 2006-09-16 12:15:36 -0700 | [diff] [blame] | 2982 | driver_unregister(&ipmi_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2983 | printk("ipmi_si: Unable to find any System Interface(s)\n"); |
| 2984 | return -ENODEV; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2985 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2986 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2987 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2988 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2989 | } |
| 2990 | module_init(init_ipmi_si); |
| 2991 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2992 | static void cleanup_one_si(struct smi_info *to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2993 | { |
| 2994 | int rv; |
| 2995 | unsigned long flags; |
| 2996 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2997 | if (!to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2998 | return; |
| 2999 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3000 | list_del(&to_clean->link); |
| 3001 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3002 | /* Tell the driver that we are shutting down. */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3003 | atomic_inc(&to_clean->stop_operation); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3004 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3005 | /* Make sure the timer and thread are stopped and will not run |
| 3006 | again. */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3007 | wait_for_timer_and_thread(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3008 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3009 | /* Timeouts are stopped, now make sure the interrupts are off |
| 3010 | for the device. A little tricky with locks to make sure |
| 3011 | there are no races. */ |
| 3012 | spin_lock_irqsave(&to_clean->si_lock, flags); |
| 3013 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
| 3014 | spin_unlock_irqrestore(&to_clean->si_lock, flags); |
| 3015 | poll(to_clean); |
| 3016 | schedule_timeout_uninterruptible(1); |
| 3017 | spin_lock_irqsave(&to_clean->si_lock, flags); |
| 3018 | } |
| 3019 | disable_si_irq(to_clean); |
| 3020 | spin_unlock_irqrestore(&to_clean->si_lock, flags); |
| 3021 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
| 3022 | poll(to_clean); |
| 3023 | schedule_timeout_uninterruptible(1); |
| 3024 | } |
| 3025 | |
| 3026 | /* Clean up interrupts and make sure that everything is done. */ |
| 3027 | if (to_clean->irq_cleanup) |
| 3028 | to_clean->irq_cleanup(to_clean); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3029 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3030 | poll(to_clean); |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 3031 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3032 | } |
| 3033 | |
| 3034 | rv = ipmi_unregister_smi(to_clean->intf); |
| 3035 | if (rv) { |
| 3036 | printk(KERN_ERR |
| 3037 | "ipmi_si: Unable to unregister device: errno=%d\n", |
| 3038 | rv); |
| 3039 | } |
| 3040 | |
| 3041 | to_clean->handlers->cleanup(to_clean->si_sm); |
| 3042 | |
| 3043 | kfree(to_clean->si_sm); |
| 3044 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3045 | if (to_clean->addr_source_cleanup) |
| 3046 | to_clean->addr_source_cleanup(to_clean); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 3047 | if (to_clean->io_cleanup) |
| 3048 | to_clean->io_cleanup(to_clean); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3049 | |
| 3050 | if (to_clean->dev_registered) |
| 3051 | platform_device_unregister(to_clean->pdev); |
| 3052 | |
| 3053 | kfree(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3054 | } |
| 3055 | |
| 3056 | static __exit void cleanup_ipmi_si(void) |
| 3057 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3058 | struct smi_info *e, *tmp_e; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3059 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3060 | if (!initialized) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3061 | return; |
| 3062 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3063 | #ifdef CONFIG_PCI |
| 3064 | pci_unregister_driver(&ipmi_pci_driver); |
| 3065 | #endif |
| 3066 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 3067 | #ifdef CONFIG_PPC_OF |
| 3068 | of_unregister_platform_driver(&ipmi_of_platform_driver); |
| 3069 | #endif |
| 3070 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3071 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3072 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
| 3073 | cleanup_one_si(e); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3074 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3075 | |
| 3076 | driver_unregister(&ipmi_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3077 | } |
| 3078 | module_exit(cleanup_ipmi_si); |
| 3079 | |
| 3080 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3081 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
| 3082 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT system interfaces."); |