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. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify it |
| 14 | * under the terms of the GNU General Public License as published by the |
| 15 | * Free Software Foundation; either version 2 of the License, or (at your |
| 16 | * option) any later version. |
| 17 | * |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 20 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 21 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 26 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 27 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 28 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | * |
| 30 | * You should have received a copy of the GNU General Public License along |
| 31 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 32 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 33 | */ |
| 34 | |
| 35 | /* |
| 36 | * This file holds the "policy" for the interface to the SMI state |
| 37 | * machine. It does the configuration, handles timers and interrupts, |
| 38 | * and drives the real SMI state machine. |
| 39 | */ |
| 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/module.h> |
| 42 | #include <linux/moduleparam.h> |
| 43 | #include <asm/system.h> |
| 44 | #include <linux/sched.h> |
| 45 | #include <linux/timer.h> |
| 46 | #include <linux/errno.h> |
| 47 | #include <linux/spinlock.h> |
| 48 | #include <linux/slab.h> |
| 49 | #include <linux/delay.h> |
| 50 | #include <linux/list.h> |
| 51 | #include <linux/pci.h> |
| 52 | #include <linux/ioport.h> |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 53 | #include <linux/notifier.h> |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 54 | #include <linux/mutex.h> |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 55 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <linux/interrupt.h> |
| 58 | #include <linux/rcupdate.h> |
| 59 | #include <linux/ipmi_smi.h> |
| 60 | #include <asm/io.h> |
| 61 | #include "ipmi_si_sm.h" |
| 62 | #include <linux/init.h> |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 63 | #include <linux/dmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | /* Measure times between events in the driver. */ |
| 66 | #undef DEBUG_TIMING |
| 67 | |
| 68 | /* Call every 10 ms. */ |
| 69 | #define SI_TIMEOUT_TIME_USEC 10000 |
| 70 | #define SI_USEC_PER_JIFFY (1000000/HZ) |
| 71 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) |
| 72 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a |
| 73 | short timeout */ |
| 74 | |
| 75 | enum si_intf_state { |
| 76 | SI_NORMAL, |
| 77 | SI_GETTING_FLAGS, |
| 78 | SI_GETTING_EVENTS, |
| 79 | SI_CLEARING_FLAGS, |
| 80 | SI_CLEARING_FLAGS_THEN_SET_IRQ, |
| 81 | SI_GETTING_MESSAGES, |
| 82 | SI_ENABLE_INTERRUPTS1, |
| 83 | SI_ENABLE_INTERRUPTS2 |
| 84 | /* FIXME - add watchdog stuff. */ |
| 85 | }; |
| 86 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 87 | /* Some BT-specific defines we need here. */ |
| 88 | #define IPMI_BT_INTMASK_REG 2 |
| 89 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 |
| 90 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 |
| 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | enum si_type { |
| 93 | SI_KCS, SI_SMIC, SI_BT |
| 94 | }; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 95 | static char *si_to_str[] = { "KCS", "SMIC", "BT" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 97 | #define DEVICE_NAME "ipmi_si" |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 98 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 99 | static struct device_driver ipmi_driver = |
| 100 | { |
| 101 | .name = DEVICE_NAME, |
| 102 | .bus = &platform_bus_type |
| 103 | }; |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | struct smi_info |
| 106 | { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 107 | int intf_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | ipmi_smi_t intf; |
| 109 | struct si_sm_data *si_sm; |
| 110 | struct si_sm_handlers *handlers; |
| 111 | enum si_type si_type; |
| 112 | spinlock_t si_lock; |
| 113 | spinlock_t msg_lock; |
| 114 | struct list_head xmit_msgs; |
| 115 | struct list_head hp_xmit_msgs; |
| 116 | struct ipmi_smi_msg *curr_msg; |
| 117 | enum si_intf_state si_state; |
| 118 | |
| 119 | /* Used to handle the various types of I/O that can occur with |
| 120 | IPMI */ |
| 121 | struct si_sm_io io; |
| 122 | int (*io_setup)(struct smi_info *info); |
| 123 | void (*io_cleanup)(struct smi_info *info); |
| 124 | int (*irq_setup)(struct smi_info *info); |
| 125 | void (*irq_cleanup)(struct smi_info *info); |
| 126 | unsigned int io_size; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 127 | char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */ |
| 128 | void (*addr_source_cleanup)(struct smi_info *info); |
| 129 | void *addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 131 | /* Per-OEM handler, called from handle_flags(). |
| 132 | Returns 1 when handle_flags() needs to be re-run |
| 133 | or 0 indicating it set si_state itself. |
| 134 | */ |
| 135 | int (*oem_data_avail_handler)(struct smi_info *smi_info); |
| 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | /* Flags from the last GET_MSG_FLAGS command, used when an ATTN |
| 138 | is set to hold the flags until we are done handling everything |
| 139 | from the flags. */ |
| 140 | #define RECEIVE_MSG_AVAIL 0x01 |
| 141 | #define EVENT_MSG_BUFFER_FULL 0x02 |
| 142 | #define WDT_PRE_TIMEOUT_INT 0x08 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 143 | #define OEM0_DATA_AVAIL 0x20 |
| 144 | #define OEM1_DATA_AVAIL 0x40 |
| 145 | #define OEM2_DATA_AVAIL 0x80 |
| 146 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ |
| 147 | OEM1_DATA_AVAIL | \ |
| 148 | OEM2_DATA_AVAIL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | unsigned char msg_flags; |
| 150 | |
| 151 | /* If set to true, this will request events the next time the |
| 152 | state machine is idle. */ |
| 153 | atomic_t req_events; |
| 154 | |
| 155 | /* If true, run the state machine to completion on every send |
| 156 | call. Generally used after a panic to make sure stuff goes |
| 157 | out. */ |
| 158 | int run_to_completion; |
| 159 | |
| 160 | /* The I/O port of an SI interface. */ |
| 161 | int port; |
| 162 | |
| 163 | /* The space between start addresses of the two ports. For |
| 164 | instance, if the first port is 0xca2 and the spacing is 4, then |
| 165 | the second port is 0xca6. */ |
| 166 | unsigned int spacing; |
| 167 | |
| 168 | /* zero if no irq; */ |
| 169 | int irq; |
| 170 | |
| 171 | /* The timer for this si. */ |
| 172 | struct timer_list si_timer; |
| 173 | |
| 174 | /* The time (in jiffies) the last timeout occurred at. */ |
| 175 | unsigned long last_timeout_jiffies; |
| 176 | |
| 177 | /* Used to gracefully stop the timer without race conditions. */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 178 | atomic_t stop_operation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | /* The driver will disable interrupts when it gets into a |
| 181 | situation where it cannot handle messages due to lack of |
| 182 | memory. Once that situation clears up, it will re-enable |
| 183 | interrupts. */ |
| 184 | int interrupt_disabled; |
| 185 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 186 | /* From the get device id response... */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 187 | struct ipmi_device_id device_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 189 | /* Driver model stuff. */ |
| 190 | struct device *dev; |
| 191 | struct platform_device *pdev; |
| 192 | |
| 193 | /* True if we allocated the device, false if it came from |
| 194 | * someplace else (like PCI). */ |
| 195 | int dev_registered; |
| 196 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | /* Slave address, could be reported from DMI. */ |
| 198 | unsigned char slave_addr; |
| 199 | |
| 200 | /* Counters and things for the proc filesystem. */ |
| 201 | spinlock_t count_lock; |
| 202 | unsigned long short_timeouts; |
| 203 | unsigned long long_timeouts; |
| 204 | unsigned long timeout_restarts; |
| 205 | unsigned long idles; |
| 206 | unsigned long interrupts; |
| 207 | unsigned long attentions; |
| 208 | unsigned long flag_fetches; |
| 209 | unsigned long hosed_count; |
| 210 | unsigned long complete_transactions; |
| 211 | unsigned long events; |
| 212 | unsigned long watchdog_pretimeouts; |
| 213 | unsigned long incoming_messages; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 214 | |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 215 | struct task_struct *thread; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 216 | |
| 217 | struct list_head link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | }; |
| 219 | |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 220 | #define SI_MAX_PARMS 4 |
| 221 | |
| 222 | static int force_kipmid[SI_MAX_PARMS]; |
| 223 | static int num_force_kipmid; |
| 224 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 225 | static int try_smi_init(struct smi_info *smi); |
| 226 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 227 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 228 | static int register_xaction_notifier(struct notifier_block * nb) |
| 229 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 230 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 231 | } |
| 232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | static void deliver_recv_msg(struct smi_info *smi_info, |
| 234 | struct ipmi_smi_msg *msg) |
| 235 | { |
| 236 | /* Deliver the message to the upper layer with the lock |
| 237 | released. */ |
| 238 | spin_unlock(&(smi_info->si_lock)); |
| 239 | ipmi_smi_msg_received(smi_info->intf, msg); |
| 240 | spin_lock(&(smi_info->si_lock)); |
| 241 | } |
| 242 | |
| 243 | static void return_hosed_msg(struct smi_info *smi_info) |
| 244 | { |
| 245 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 246 | |
| 247 | /* Make it a reponse */ |
| 248 | msg->rsp[0] = msg->data[0] | 4; |
| 249 | msg->rsp[1] = msg->data[1]; |
| 250 | msg->rsp[2] = 0xFF; /* Unknown error. */ |
| 251 | msg->rsp_size = 3; |
| 252 | |
| 253 | smi_info->curr_msg = NULL; |
| 254 | deliver_recv_msg(smi_info, msg); |
| 255 | } |
| 256 | |
| 257 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) |
| 258 | { |
| 259 | int rv; |
| 260 | struct list_head *entry = NULL; |
| 261 | #ifdef DEBUG_TIMING |
| 262 | struct timeval t; |
| 263 | #endif |
| 264 | |
| 265 | /* No need to save flags, we aleady have interrupts off and we |
| 266 | already hold the SMI lock. */ |
| 267 | spin_lock(&(smi_info->msg_lock)); |
| 268 | |
| 269 | /* Pick the high priority queue first. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 270 | if (!list_empty(&(smi_info->hp_xmit_msgs))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | entry = smi_info->hp_xmit_msgs.next; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 272 | } else if (!list_empty(&(smi_info->xmit_msgs))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | entry = smi_info->xmit_msgs.next; |
| 274 | } |
| 275 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 276 | if (!entry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | smi_info->curr_msg = NULL; |
| 278 | rv = SI_SM_IDLE; |
| 279 | } else { |
| 280 | int err; |
| 281 | |
| 282 | list_del(entry); |
| 283 | smi_info->curr_msg = list_entry(entry, |
| 284 | struct ipmi_smi_msg, |
| 285 | link); |
| 286 | #ifdef DEBUG_TIMING |
| 287 | do_gettimeofday(&t); |
| 288 | printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 289 | #endif |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 290 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
| 291 | 0, smi_info); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 292 | if (err & NOTIFY_STOP_MASK) { |
| 293 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 294 | goto out; |
| 295 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | err = smi_info->handlers->start_transaction( |
| 297 | smi_info->si_sm, |
| 298 | smi_info->curr_msg->data, |
| 299 | smi_info->curr_msg->data_size); |
| 300 | if (err) { |
| 301 | return_hosed_msg(smi_info); |
| 302 | } |
| 303 | |
| 304 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 305 | } |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 306 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | spin_unlock(&(smi_info->msg_lock)); |
| 308 | |
| 309 | return rv; |
| 310 | } |
| 311 | |
| 312 | static void start_enable_irq(struct smi_info *smi_info) |
| 313 | { |
| 314 | unsigned char msg[2]; |
| 315 | |
| 316 | /* If we are enabling interrupts, we have to tell the |
| 317 | BMC to use them. */ |
| 318 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 319 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 320 | |
| 321 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 322 | smi_info->si_state = SI_ENABLE_INTERRUPTS1; |
| 323 | } |
| 324 | |
| 325 | static void start_clear_flags(struct smi_info *smi_info) |
| 326 | { |
| 327 | unsigned char msg[3]; |
| 328 | |
| 329 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ |
| 330 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 331 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; |
| 332 | msg[2] = WDT_PRE_TIMEOUT_INT; |
| 333 | |
| 334 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 335 | smi_info->si_state = SI_CLEARING_FLAGS; |
| 336 | } |
| 337 | |
| 338 | /* When we have a situtaion where we run out of memory and cannot |
| 339 | allocate messages, we just leave them in the BMC and run the system |
| 340 | polled until we can allocate some memory. Once we have some |
| 341 | memory, we will re-enable the interrupt. */ |
| 342 | static inline void disable_si_irq(struct smi_info *smi_info) |
| 343 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 344 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | disable_irq_nosync(smi_info->irq); |
| 346 | smi_info->interrupt_disabled = 1; |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | static inline void enable_si_irq(struct smi_info *smi_info) |
| 351 | { |
| 352 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { |
| 353 | enable_irq(smi_info->irq); |
| 354 | smi_info->interrupt_disabled = 0; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | static void handle_flags(struct smi_info *smi_info) |
| 359 | { |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 360 | retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
| 362 | /* Watchdog pre-timeout */ |
| 363 | spin_lock(&smi_info->count_lock); |
| 364 | smi_info->watchdog_pretimeouts++; |
| 365 | spin_unlock(&smi_info->count_lock); |
| 366 | |
| 367 | start_clear_flags(smi_info); |
| 368 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; |
| 369 | spin_unlock(&(smi_info->si_lock)); |
| 370 | ipmi_smi_watchdog_pretimeout(smi_info->intf); |
| 371 | spin_lock(&(smi_info->si_lock)); |
| 372 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { |
| 373 | /* Messages available. */ |
| 374 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 375 | if (!smi_info->curr_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | disable_si_irq(smi_info); |
| 377 | smi_info->si_state = SI_NORMAL; |
| 378 | return; |
| 379 | } |
| 380 | enable_si_irq(smi_info); |
| 381 | |
| 382 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 383 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; |
| 384 | smi_info->curr_msg->data_size = 2; |
| 385 | |
| 386 | smi_info->handlers->start_transaction( |
| 387 | smi_info->si_sm, |
| 388 | smi_info->curr_msg->data, |
| 389 | smi_info->curr_msg->data_size); |
| 390 | smi_info->si_state = SI_GETTING_MESSAGES; |
| 391 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { |
| 392 | /* Events available. */ |
| 393 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 394 | if (!smi_info->curr_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | disable_si_irq(smi_info); |
| 396 | smi_info->si_state = SI_NORMAL; |
| 397 | return; |
| 398 | } |
| 399 | enable_si_irq(smi_info); |
| 400 | |
| 401 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 402 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; |
| 403 | smi_info->curr_msg->data_size = 2; |
| 404 | |
| 405 | smi_info->handlers->start_transaction( |
| 406 | smi_info->si_sm, |
| 407 | smi_info->curr_msg->data, |
| 408 | smi_info->curr_msg->data_size); |
| 409 | smi_info->si_state = SI_GETTING_EVENTS; |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 410 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
| 411 | smi_info->oem_data_avail_handler) { |
| 412 | if (smi_info->oem_data_avail_handler(smi_info)) |
| 413 | goto retry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | } else { |
| 415 | smi_info->si_state = SI_NORMAL; |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | static void handle_transaction_done(struct smi_info *smi_info) |
| 420 | { |
| 421 | struct ipmi_smi_msg *msg; |
| 422 | #ifdef DEBUG_TIMING |
| 423 | struct timeval t; |
| 424 | |
| 425 | do_gettimeofday(&t); |
| 426 | printk("**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 427 | #endif |
| 428 | switch (smi_info->si_state) { |
| 429 | case SI_NORMAL: |
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 | break; |
| 432 | |
| 433 | smi_info->curr_msg->rsp_size |
| 434 | = smi_info->handlers->get_result( |
| 435 | smi_info->si_sm, |
| 436 | smi_info->curr_msg->rsp, |
| 437 | IPMI_MAX_MSG_LENGTH); |
| 438 | |
| 439 | /* Do this here becase deliver_recv_msg() releases the |
| 440 | lock, and a new message can be put in during the |
| 441 | time the lock is released. */ |
| 442 | msg = smi_info->curr_msg; |
| 443 | smi_info->curr_msg = NULL; |
| 444 | deliver_recv_msg(smi_info, msg); |
| 445 | break; |
| 446 | |
| 447 | case SI_GETTING_FLAGS: |
| 448 | { |
| 449 | unsigned char msg[4]; |
| 450 | unsigned int len; |
| 451 | |
| 452 | /* We got the flags from the SMI, now handle them. */ |
| 453 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 454 | if (msg[2] != 0) { |
| 455 | /* Error fetching flags, just give up for |
| 456 | now. */ |
| 457 | smi_info->si_state = SI_NORMAL; |
| 458 | } else if (len < 4) { |
| 459 | /* Hmm, no flags. That's technically illegal, but |
| 460 | don't use uninitialized data. */ |
| 461 | smi_info->si_state = SI_NORMAL; |
| 462 | } else { |
| 463 | smi_info->msg_flags = msg[3]; |
| 464 | handle_flags(smi_info); |
| 465 | } |
| 466 | break; |
| 467 | } |
| 468 | |
| 469 | case SI_CLEARING_FLAGS: |
| 470 | case SI_CLEARING_FLAGS_THEN_SET_IRQ: |
| 471 | { |
| 472 | unsigned char msg[3]; |
| 473 | |
| 474 | /* We cleared the flags. */ |
| 475 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); |
| 476 | if (msg[2] != 0) { |
| 477 | /* Error clearing flags */ |
| 478 | printk(KERN_WARNING |
| 479 | "ipmi_si: Error clearing flags: %2.2x\n", |
| 480 | msg[2]); |
| 481 | } |
| 482 | if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ) |
| 483 | start_enable_irq(smi_info); |
| 484 | else |
| 485 | smi_info->si_state = SI_NORMAL; |
| 486 | break; |
| 487 | } |
| 488 | |
| 489 | case SI_GETTING_EVENTS: |
| 490 | { |
| 491 | smi_info->curr_msg->rsp_size |
| 492 | = smi_info->handlers->get_result( |
| 493 | smi_info->si_sm, |
| 494 | smi_info->curr_msg->rsp, |
| 495 | IPMI_MAX_MSG_LENGTH); |
| 496 | |
| 497 | /* Do this here becase deliver_recv_msg() releases the |
| 498 | lock, and a new message can be put in during the |
| 499 | time the lock is released. */ |
| 500 | msg = smi_info->curr_msg; |
| 501 | smi_info->curr_msg = NULL; |
| 502 | if (msg->rsp[2] != 0) { |
| 503 | /* Error getting event, probably done. */ |
| 504 | msg->done(msg); |
| 505 | |
| 506 | /* Take off the event flag. */ |
| 507 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; |
| 508 | handle_flags(smi_info); |
| 509 | } else { |
| 510 | spin_lock(&smi_info->count_lock); |
| 511 | smi_info->events++; |
| 512 | spin_unlock(&smi_info->count_lock); |
| 513 | |
| 514 | /* Do this before we deliver the message |
| 515 | because delivering the message releases the |
| 516 | lock and something else can mess with the |
| 517 | state. */ |
| 518 | handle_flags(smi_info); |
| 519 | |
| 520 | deliver_recv_msg(smi_info, msg); |
| 521 | } |
| 522 | break; |
| 523 | } |
| 524 | |
| 525 | case SI_GETTING_MESSAGES: |
| 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 msg flag. */ |
| 543 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; |
| 544 | handle_flags(smi_info); |
| 545 | } else { |
| 546 | spin_lock(&smi_info->count_lock); |
| 547 | smi_info->incoming_messages++; |
| 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_ENABLE_INTERRUPTS1: |
| 562 | { |
| 563 | unsigned char msg[4]; |
| 564 | |
| 565 | /* We got the flags from the SMI, now handle them. */ |
| 566 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 567 | if (msg[2] != 0) { |
| 568 | printk(KERN_WARNING |
| 569 | "ipmi_si: Could not enable interrupts" |
| 570 | ", failed get, using polled mode.\n"); |
| 571 | smi_info->si_state = SI_NORMAL; |
| 572 | } else { |
| 573 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 574 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
| 575 | msg[2] = msg[3] | 1; /* enable msg queue int */ |
| 576 | smi_info->handlers->start_transaction( |
| 577 | smi_info->si_sm, msg, 3); |
| 578 | smi_info->si_state = SI_ENABLE_INTERRUPTS2; |
| 579 | } |
| 580 | break; |
| 581 | } |
| 582 | |
| 583 | case SI_ENABLE_INTERRUPTS2: |
| 584 | { |
| 585 | unsigned char msg[4]; |
| 586 | |
| 587 | /* We got the flags from the SMI, now handle them. */ |
| 588 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 589 | if (msg[2] != 0) { |
| 590 | printk(KERN_WARNING |
| 591 | "ipmi_si: Could not enable interrupts" |
| 592 | ", failed set, using polled mode.\n"); |
| 593 | } |
| 594 | smi_info->si_state = SI_NORMAL; |
| 595 | break; |
| 596 | } |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | /* Called on timeouts and events. Timeouts should pass the elapsed |
| 601 | time, interrupts should pass in zero. */ |
| 602 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, |
| 603 | int time) |
| 604 | { |
| 605 | enum si_sm_result si_sm_result; |
| 606 | |
| 607 | restart: |
| 608 | /* There used to be a loop here that waited a little while |
| 609 | (around 25us) before giving up. That turned out to be |
| 610 | pointless, the minimum delays I was seeing were in the 300us |
| 611 | range, which is far too long to wait in an interrupt. So |
| 612 | we just run until the state machine tells us something |
| 613 | happened or it needs a delay. */ |
| 614 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); |
| 615 | time = 0; |
| 616 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) |
| 617 | { |
| 618 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 619 | } |
| 620 | |
| 621 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) |
| 622 | { |
| 623 | spin_lock(&smi_info->count_lock); |
| 624 | smi_info->complete_transactions++; |
| 625 | spin_unlock(&smi_info->count_lock); |
| 626 | |
| 627 | handle_transaction_done(smi_info); |
| 628 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 629 | } |
| 630 | else if (si_sm_result == SI_SM_HOSED) |
| 631 | { |
| 632 | spin_lock(&smi_info->count_lock); |
| 633 | smi_info->hosed_count++; |
| 634 | spin_unlock(&smi_info->count_lock); |
| 635 | |
| 636 | /* Do the before return_hosed_msg, because that |
| 637 | releases the lock. */ |
| 638 | smi_info->si_state = SI_NORMAL; |
| 639 | if (smi_info->curr_msg != NULL) { |
| 640 | /* If we were handling a user message, format |
| 641 | a response to send to the upper layer to |
| 642 | tell it about the error. */ |
| 643 | return_hosed_msg(smi_info); |
| 644 | } |
| 645 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 646 | } |
| 647 | |
| 648 | /* We prefer handling attn over new messages. */ |
| 649 | if (si_sm_result == SI_SM_ATTN) |
| 650 | { |
| 651 | unsigned char msg[2]; |
| 652 | |
| 653 | spin_lock(&smi_info->count_lock); |
| 654 | smi_info->attentions++; |
| 655 | spin_unlock(&smi_info->count_lock); |
| 656 | |
| 657 | /* Got a attn, send down a get message flags to see |
| 658 | what's causing it. It would be better to handle |
| 659 | this in the upper layer, but due to the way |
| 660 | interrupts work with the SMI, that's not really |
| 661 | possible. */ |
| 662 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 663 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; |
| 664 | |
| 665 | smi_info->handlers->start_transaction( |
| 666 | smi_info->si_sm, msg, 2); |
| 667 | smi_info->si_state = SI_GETTING_FLAGS; |
| 668 | goto restart; |
| 669 | } |
| 670 | |
| 671 | /* If we are currently idle, try to start the next message. */ |
| 672 | if (si_sm_result == SI_SM_IDLE) { |
| 673 | spin_lock(&smi_info->count_lock); |
| 674 | smi_info->idles++; |
| 675 | spin_unlock(&smi_info->count_lock); |
| 676 | |
| 677 | si_sm_result = start_next_msg(smi_info); |
| 678 | if (si_sm_result != SI_SM_IDLE) |
| 679 | goto restart; |
| 680 | } |
| 681 | |
| 682 | if ((si_sm_result == SI_SM_IDLE) |
| 683 | && (atomic_read(&smi_info->req_events))) |
| 684 | { |
| 685 | /* We are idle and the upper layer requested that I fetch |
| 686 | events, so do so. */ |
| 687 | unsigned char msg[2]; |
| 688 | |
| 689 | spin_lock(&smi_info->count_lock); |
| 690 | smi_info->flag_fetches++; |
| 691 | spin_unlock(&smi_info->count_lock); |
| 692 | |
| 693 | atomic_set(&smi_info->req_events, 0); |
| 694 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 695 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; |
| 696 | |
| 697 | smi_info->handlers->start_transaction( |
| 698 | smi_info->si_sm, msg, 2); |
| 699 | smi_info->si_state = SI_GETTING_FLAGS; |
| 700 | goto restart; |
| 701 | } |
| 702 | |
| 703 | return si_sm_result; |
| 704 | } |
| 705 | |
| 706 | static void sender(void *send_info, |
| 707 | struct ipmi_smi_msg *msg, |
| 708 | int priority) |
| 709 | { |
| 710 | struct smi_info *smi_info = send_info; |
| 711 | enum si_sm_result result; |
| 712 | unsigned long flags; |
| 713 | #ifdef DEBUG_TIMING |
| 714 | struct timeval t; |
| 715 | #endif |
| 716 | |
| 717 | spin_lock_irqsave(&(smi_info->msg_lock), flags); |
| 718 | #ifdef DEBUG_TIMING |
| 719 | do_gettimeofday(&t); |
| 720 | printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 721 | #endif |
| 722 | |
| 723 | if (smi_info->run_to_completion) { |
| 724 | /* If we are running to completion, then throw it in |
| 725 | the list and run transactions until everything is |
| 726 | clear. Priority doesn't matter here. */ |
| 727 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); |
| 728 | |
| 729 | /* We have to release the msg lock and claim the smi |
| 730 | lock in this case, because of race conditions. */ |
| 731 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); |
| 732 | |
| 733 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 734 | result = smi_event_handler(smi_info, 0); |
| 735 | while (result != SI_SM_IDLE) { |
| 736 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 737 | result = smi_event_handler(smi_info, |
| 738 | SI_SHORT_TIMEOUT_USEC); |
| 739 | } |
| 740 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 741 | return; |
| 742 | } else { |
| 743 | if (priority > 0) { |
| 744 | list_add_tail(&(msg->link), &(smi_info->hp_xmit_msgs)); |
| 745 | } else { |
| 746 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); |
| 747 | } |
| 748 | } |
| 749 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); |
| 750 | |
| 751 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 752 | if ((smi_info->si_state == SI_NORMAL) |
| 753 | && (smi_info->curr_msg == NULL)) |
| 754 | { |
| 755 | start_next_msg(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | } |
| 757 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 758 | } |
| 759 | |
| 760 | static void set_run_to_completion(void *send_info, int i_run_to_completion) |
| 761 | { |
| 762 | struct smi_info *smi_info = send_info; |
| 763 | enum si_sm_result result; |
| 764 | unsigned long flags; |
| 765 | |
| 766 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 767 | |
| 768 | smi_info->run_to_completion = i_run_to_completion; |
| 769 | if (i_run_to_completion) { |
| 770 | result = smi_event_handler(smi_info, 0); |
| 771 | while (result != SI_SM_IDLE) { |
| 772 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 773 | result = smi_event_handler(smi_info, |
| 774 | SI_SHORT_TIMEOUT_USEC); |
| 775 | } |
| 776 | } |
| 777 | |
| 778 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 779 | } |
| 780 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 781 | static int ipmi_thread(void *data) |
| 782 | { |
| 783 | struct smi_info *smi_info = data; |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 784 | unsigned long flags; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 785 | enum si_sm_result smi_result; |
| 786 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 787 | set_user_nice(current, 19); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 788 | while (!kthread_should_stop()) { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 789 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 790 | smi_result = smi_event_handler(smi_info, 0); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 791 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 792 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
| 793 | /* do nothing */ |
| 794 | } |
| 795 | else if (smi_result == SI_SM_CALL_WITH_DELAY) |
akpm@osdl.org | 3397973 | 2006-06-27 02:54:04 -0700 | [diff] [blame] | 796 | schedule(); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 797 | else |
| 798 | schedule_timeout_interruptible(1); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 799 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 800 | return 0; |
| 801 | } |
| 802 | |
| 803 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | static void poll(void *send_info) |
| 805 | { |
| 806 | struct smi_info *smi_info = send_info; |
| 807 | |
| 808 | smi_event_handler(smi_info, 0); |
| 809 | } |
| 810 | |
| 811 | static void request_events(void *send_info) |
| 812 | { |
| 813 | struct smi_info *smi_info = send_info; |
| 814 | |
| 815 | atomic_set(&smi_info->req_events, 1); |
| 816 | } |
| 817 | |
| 818 | static int initialized = 0; |
| 819 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | static void smi_timeout(unsigned long data) |
| 821 | { |
| 822 | struct smi_info *smi_info = (struct smi_info *) data; |
| 823 | enum si_sm_result smi_result; |
| 824 | unsigned long flags; |
| 825 | unsigned long jiffies_now; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 826 | long time_diff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | #ifdef DEBUG_TIMING |
| 828 | struct timeval t; |
| 829 | #endif |
| 830 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 831 | if (atomic_read(&smi_info->stop_operation)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | |
| 834 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 835 | #ifdef DEBUG_TIMING |
| 836 | do_gettimeofday(&t); |
| 837 | printk("**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 838 | #endif |
| 839 | jiffies_now = jiffies; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 840 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | * SI_USEC_PER_JIFFY); |
| 842 | smi_result = smi_event_handler(smi_info, time_diff); |
| 843 | |
| 844 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 845 | |
| 846 | smi_info->last_timeout_jiffies = jiffies_now; |
| 847 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 848 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | /* Running with interrupts, only do long timeouts. */ |
| 850 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; |
| 851 | spin_lock_irqsave(&smi_info->count_lock, flags); |
| 852 | smi_info->long_timeouts++; |
| 853 | spin_unlock_irqrestore(&smi_info->count_lock, flags); |
| 854 | goto do_add_timer; |
| 855 | } |
| 856 | |
| 857 | /* If the state machine asks for a short delay, then shorten |
| 858 | the timer timeout. */ |
| 859 | if (smi_result == SI_SM_CALL_WITH_DELAY) { |
| 860 | spin_lock_irqsave(&smi_info->count_lock, flags); |
| 861 | smi_info->short_timeouts++; |
| 862 | spin_unlock_irqrestore(&smi_info->count_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | smi_info->si_timer.expires = jiffies + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | } else { |
| 865 | spin_lock_irqsave(&smi_info->count_lock, flags); |
| 866 | smi_info->long_timeouts++; |
| 867 | spin_unlock_irqrestore(&smi_info->count_lock, flags); |
| 868 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | } |
| 870 | |
| 871 | do_add_timer: |
| 872 | add_timer(&(smi_info->si_timer)); |
| 873 | } |
| 874 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 875 | static irqreturn_t si_irq_handler(int irq, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | { |
| 877 | struct smi_info *smi_info = data; |
| 878 | unsigned long flags; |
| 879 | #ifdef DEBUG_TIMING |
| 880 | struct timeval t; |
| 881 | #endif |
| 882 | |
| 883 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 884 | |
| 885 | spin_lock(&smi_info->count_lock); |
| 886 | smi_info->interrupts++; |
| 887 | spin_unlock(&smi_info->count_lock); |
| 888 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 889 | if (atomic_read(&smi_info->stop_operation)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | goto out; |
| 891 | |
| 892 | #ifdef DEBUG_TIMING |
| 893 | do_gettimeofday(&t); |
| 894 | printk("**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 895 | #endif |
| 896 | smi_event_handler(smi_info, 0); |
| 897 | out: |
| 898 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 899 | return IRQ_HANDLED; |
| 900 | } |
| 901 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 902 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 903 | { |
| 904 | struct smi_info *smi_info = data; |
| 905 | /* We need to clear the IRQ flag for the BT interface. */ |
| 906 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, |
| 907 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT |
| 908 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 909 | return si_irq_handler(irq, data); |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 910 | } |
| 911 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 912 | static int smi_start_processing(void *send_info, |
| 913 | ipmi_smi_t intf) |
| 914 | { |
| 915 | struct smi_info *new_smi = send_info; |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 916 | int enable = 0; |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 917 | |
| 918 | new_smi->intf = intf; |
| 919 | |
| 920 | /* Set up the timer that drives the interface. */ |
| 921 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); |
| 922 | new_smi->last_timeout_jiffies = jiffies; |
| 923 | mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES); |
| 924 | |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 925 | /* |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 926 | * Check if the user forcefully enabled the daemon. |
| 927 | */ |
| 928 | if (new_smi->intf_num < num_force_kipmid) |
| 929 | enable = force_kipmid[new_smi->intf_num]; |
| 930 | /* |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 931 | * The BT interface is efficient enough to not need a thread, |
| 932 | * and there is no need for a thread if we have interrupts. |
| 933 | */ |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 934 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
| 935 | enable = 1; |
| 936 | |
| 937 | if (enable) { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 938 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
| 939 | "kipmi%d", new_smi->intf_num); |
| 940 | if (IS_ERR(new_smi->thread)) { |
| 941 | printk(KERN_NOTICE "ipmi_si_intf: Could not start" |
| 942 | " kernel thread due to error %ld, only using" |
| 943 | " timers to drive the interface\n", |
| 944 | PTR_ERR(new_smi->thread)); |
| 945 | new_smi->thread = NULL; |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | return 0; |
| 950 | } |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 951 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame^] | 952 | static void set_maintenance_mode(void *send_info, int enable) |
| 953 | { |
| 954 | struct smi_info *smi_info = send_info; |
| 955 | |
| 956 | if (!enable) |
| 957 | atomic_set(&smi_info->req_events, 0); |
| 958 | } |
| 959 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | static struct ipmi_smi_handlers handlers = |
| 961 | { |
| 962 | .owner = THIS_MODULE, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 963 | .start_processing = smi_start_processing, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | .sender = sender, |
| 965 | .request_events = request_events, |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame^] | 966 | .set_maintenance_mode = set_maintenance_mode, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | .set_run_to_completion = set_run_to_completion, |
| 968 | .poll = poll, |
| 969 | }; |
| 970 | |
| 971 | /* There can be 4 IO ports passed in (with or without IRQs), 4 addresses, |
| 972 | a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS */ |
| 973 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 974 | static LIST_HEAD(smi_infos); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 975 | static DEFINE_MUTEX(smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 976 | static int smi_num; /* Used to sequence the SMIs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | #define DEFAULT_REGSPACING 1 |
| 979 | |
| 980 | static int si_trydefaults = 1; |
| 981 | static char *si_type[SI_MAX_PARMS]; |
| 982 | #define MAX_SI_TYPE_STR 30 |
| 983 | static char si_type_str[MAX_SI_TYPE_STR]; |
| 984 | static unsigned long addrs[SI_MAX_PARMS]; |
| 985 | static int num_addrs; |
| 986 | static unsigned int ports[SI_MAX_PARMS]; |
| 987 | static int num_ports; |
| 988 | static int irqs[SI_MAX_PARMS]; |
| 989 | static int num_irqs; |
| 990 | static int regspacings[SI_MAX_PARMS]; |
| 991 | static int num_regspacings = 0; |
| 992 | static int regsizes[SI_MAX_PARMS]; |
| 993 | static int num_regsizes = 0; |
| 994 | static int regshifts[SI_MAX_PARMS]; |
| 995 | static int num_regshifts = 0; |
| 996 | static int slave_addrs[SI_MAX_PARMS]; |
| 997 | static int num_slave_addrs = 0; |
| 998 | |
| 999 | |
| 1000 | module_param_named(trydefaults, si_trydefaults, bool, 0); |
| 1001 | MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" |
| 1002 | " default scan of the KCS and SMIC interface at the standard" |
| 1003 | " address"); |
| 1004 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); |
| 1005 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" |
| 1006 | " interface separated by commas. The types are 'kcs'," |
| 1007 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" |
| 1008 | " the first interface to kcs and the second to bt"); |
| 1009 | module_param_array(addrs, long, &num_addrs, 0); |
| 1010 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" |
| 1011 | " addresses separated by commas. Only use if an interface" |
| 1012 | " is in memory. Otherwise, set it to zero or leave" |
| 1013 | " it blank."); |
| 1014 | module_param_array(ports, int, &num_ports, 0); |
| 1015 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" |
| 1016 | " addresses separated by commas. Only use if an interface" |
| 1017 | " is a port. Otherwise, set it to zero or leave" |
| 1018 | " it blank."); |
| 1019 | module_param_array(irqs, int, &num_irqs, 0); |
| 1020 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" |
| 1021 | " addresses separated by commas. Only use if an interface" |
| 1022 | " has an interrupt. Otherwise, set it to zero or leave" |
| 1023 | " it blank."); |
| 1024 | module_param_array(regspacings, int, &num_regspacings, 0); |
| 1025 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" |
| 1026 | " and each successive register used by the interface. For" |
| 1027 | " instance, if the start address is 0xca2 and the spacing" |
| 1028 | " is 2, then the second address is at 0xca4. Defaults" |
| 1029 | " to 1."); |
| 1030 | module_param_array(regsizes, int, &num_regsizes, 0); |
| 1031 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." |
| 1032 | " This should generally be 1, 2, 4, or 8 for an 8-bit," |
| 1033 | " 16-bit, 32-bit, or 64-bit register. Use this if you" |
| 1034 | " the 8-bit IPMI register has to be read from a larger" |
| 1035 | " register."); |
| 1036 | module_param_array(regshifts, int, &num_regshifts, 0); |
| 1037 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." |
| 1038 | " IPMI register, in bits. For instance, if the data" |
| 1039 | " is read from a 32-bit word and the IPMI data is in" |
| 1040 | " bit 8-15, then the shift would be 8"); |
| 1041 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); |
| 1042 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" |
| 1043 | " the controller. Normally this is 0x20, but can be" |
| 1044 | " overridden by this parm. This is an array indexed" |
| 1045 | " by interface number."); |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1046 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
| 1047 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" |
| 1048 | " disabled(0). Normally the IPMI driver auto-detects" |
| 1049 | " this, but the value may be overridden by this parm."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | |
| 1051 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1052 | #define IPMI_IO_ADDR_SPACE 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | #define IPMI_MEM_ADDR_SPACE 1 |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1054 | static char *addr_space_to_str[] = { "I/O", "memory" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1056 | static void std_irq_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1058 | if (info->si_type == SI_BT) |
| 1059 | /* Disable the interrupt in the BT interface. */ |
| 1060 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); |
| 1061 | free_irq(info->irq, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
| 1064 | static int std_irq_setup(struct smi_info *info) |
| 1065 | { |
| 1066 | int rv; |
| 1067 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1068 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | return 0; |
| 1070 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1071 | if (info->si_type == SI_BT) { |
| 1072 | rv = request_irq(info->irq, |
| 1073 | si_bt_irq_handler, |
Thomas Gleixner | 0f2ed4c | 2006-07-01 19:29:33 -0700 | [diff] [blame] | 1074 | IRQF_DISABLED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1075 | DEVICE_NAME, |
| 1076 | info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1077 | if (!rv) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1078 | /* Enable the interrupt in the BT interface. */ |
| 1079 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, |
| 1080 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
| 1081 | } else |
| 1082 | rv = request_irq(info->irq, |
| 1083 | si_irq_handler, |
Thomas Gleixner | 0f2ed4c | 2006-07-01 19:29:33 -0700 | [diff] [blame] | 1084 | IRQF_DISABLED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1085 | DEVICE_NAME, |
| 1086 | info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | if (rv) { |
| 1088 | printk(KERN_WARNING |
| 1089 | "ipmi_si: %s unable to claim interrupt %d," |
| 1090 | " running polled\n", |
| 1091 | DEVICE_NAME, info->irq); |
| 1092 | info->irq = 0; |
| 1093 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1094 | info->irq_cleanup = std_irq_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | printk(" Using irq %d\n", info->irq); |
| 1096 | } |
| 1097 | |
| 1098 | return rv; |
| 1099 | } |
| 1100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | static unsigned char port_inb(struct si_sm_io *io, unsigned int offset) |
| 1102 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1103 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1105 | return inb(addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | } |
| 1107 | |
| 1108 | static void port_outb(struct si_sm_io *io, unsigned int offset, |
| 1109 | unsigned char b) |
| 1110 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1111 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1113 | outb(b, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | } |
| 1115 | |
| 1116 | static unsigned char port_inw(struct si_sm_io *io, unsigned int offset) |
| 1117 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1118 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1120 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | } |
| 1122 | |
| 1123 | static void port_outw(struct si_sm_io *io, unsigned int offset, |
| 1124 | unsigned char b) |
| 1125 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1126 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1128 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | } |
| 1130 | |
| 1131 | static unsigned char port_inl(struct si_sm_io *io, unsigned int offset) |
| 1132 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1133 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1135 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | } |
| 1137 | |
| 1138 | static void port_outl(struct si_sm_io *io, unsigned int offset, |
| 1139 | unsigned char b) |
| 1140 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1141 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1143 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | } |
| 1145 | |
| 1146 | static void port_cleanup(struct smi_info *info) |
| 1147 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1148 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1149 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1151 | if (addr) { |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1152 | for (idx = 0; idx < info->io_size; idx++) { |
| 1153 | release_region(addr + idx * info->io.regspacing, |
| 1154 | info->io.regsize); |
| 1155 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | } |
| 1158 | |
| 1159 | static int port_setup(struct smi_info *info) |
| 1160 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1161 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1162 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1164 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | return -ENODEV; |
| 1166 | |
| 1167 | info->io_cleanup = port_cleanup; |
| 1168 | |
| 1169 | /* Figure out the actual inb/inw/inl/etc routine to use based |
| 1170 | upon the register size. */ |
| 1171 | switch (info->io.regsize) { |
| 1172 | case 1: |
| 1173 | info->io.inputb = port_inb; |
| 1174 | info->io.outputb = port_outb; |
| 1175 | break; |
| 1176 | case 2: |
| 1177 | info->io.inputb = port_inw; |
| 1178 | info->io.outputb = port_outw; |
| 1179 | break; |
| 1180 | case 4: |
| 1181 | info->io.inputb = port_inl; |
| 1182 | info->io.outputb = port_outl; |
| 1183 | break; |
| 1184 | default: |
| 1185 | printk("ipmi_si: Invalid register size: %d\n", |
| 1186 | info->io.regsize); |
| 1187 | return -EINVAL; |
| 1188 | } |
| 1189 | |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1190 | /* Some BIOSes reserve disjoint I/O regions in their ACPI |
| 1191 | * tables. This causes problems when trying to register the |
| 1192 | * entire I/O region. Therefore we must register each I/O |
| 1193 | * port separately. |
| 1194 | */ |
| 1195 | for (idx = 0; idx < info->io_size; idx++) { |
| 1196 | if (request_region(addr + idx * info->io.regspacing, |
| 1197 | info->io.regsize, DEVICE_NAME) == NULL) { |
| 1198 | /* Undo allocations */ |
| 1199 | while (idx--) { |
| 1200 | release_region(addr + idx * info->io.regspacing, |
| 1201 | info->io.regsize); |
| 1202 | } |
| 1203 | return -EIO; |
| 1204 | } |
| 1205 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | return 0; |
| 1207 | } |
| 1208 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1209 | 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] | 1210 | { |
| 1211 | return readb((io->addr)+(offset * io->regspacing)); |
| 1212 | } |
| 1213 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1214 | 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] | 1215 | unsigned char b) |
| 1216 | { |
| 1217 | writeb(b, (io->addr)+(offset * io->regspacing)); |
| 1218 | } |
| 1219 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1220 | 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] | 1221 | { |
| 1222 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1223 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | } |
| 1225 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1226 | 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] | 1227 | unsigned char b) |
| 1228 | { |
| 1229 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1230 | } |
| 1231 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1232 | 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] | 1233 | { |
| 1234 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1235 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | } |
| 1237 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1238 | 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] | 1239 | unsigned char b) |
| 1240 | { |
| 1241 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1242 | } |
| 1243 | |
| 1244 | #ifdef readq |
| 1245 | static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset) |
| 1246 | { |
| 1247 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1248 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | } |
| 1250 | |
| 1251 | static void mem_outq(struct si_sm_io *io, unsigned int offset, |
| 1252 | unsigned char b) |
| 1253 | { |
| 1254 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1255 | } |
| 1256 | #endif |
| 1257 | |
| 1258 | static void mem_cleanup(struct smi_info *info) |
| 1259 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1260 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | int mapsize; |
| 1262 | |
| 1263 | if (info->io.addr) { |
| 1264 | iounmap(info->io.addr); |
| 1265 | |
| 1266 | mapsize = ((info->io_size * info->io.regspacing) |
| 1267 | - (info->io.regspacing - info->io.regsize)); |
| 1268 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1269 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | } |
| 1272 | |
| 1273 | static int mem_setup(struct smi_info *info) |
| 1274 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1275 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | int mapsize; |
| 1277 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1278 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | return -ENODEV; |
| 1280 | |
| 1281 | info->io_cleanup = mem_cleanup; |
| 1282 | |
| 1283 | /* Figure out the actual readb/readw/readl/etc routine to use based |
| 1284 | upon the register size. */ |
| 1285 | switch (info->io.regsize) { |
| 1286 | case 1: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1287 | info->io.inputb = intf_mem_inb; |
| 1288 | info->io.outputb = intf_mem_outb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | break; |
| 1290 | case 2: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1291 | info->io.inputb = intf_mem_inw; |
| 1292 | info->io.outputb = intf_mem_outw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | break; |
| 1294 | case 4: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1295 | info->io.inputb = intf_mem_inl; |
| 1296 | info->io.outputb = intf_mem_outl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | break; |
| 1298 | #ifdef readq |
| 1299 | case 8: |
| 1300 | info->io.inputb = mem_inq; |
| 1301 | info->io.outputb = mem_outq; |
| 1302 | break; |
| 1303 | #endif |
| 1304 | default: |
| 1305 | printk("ipmi_si: Invalid register size: %d\n", |
| 1306 | info->io.regsize); |
| 1307 | return -EINVAL; |
| 1308 | } |
| 1309 | |
| 1310 | /* Calculate the total amount of memory to claim. This is an |
| 1311 | * unusual looking calculation, but it avoids claiming any |
| 1312 | * more memory than it has to. It will claim everything |
| 1313 | * between the first address to the end of the last full |
| 1314 | * register. */ |
| 1315 | mapsize = ((info->io_size * info->io.regspacing) |
| 1316 | - (info->io.regspacing - info->io.regsize)); |
| 1317 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1318 | if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | return -EIO; |
| 1320 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1321 | info->io.addr = ioremap(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | if (info->io.addr == NULL) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1323 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | return -EIO; |
| 1325 | } |
| 1326 | return 0; |
| 1327 | } |
| 1328 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1329 | |
| 1330 | static __devinit void hardcode_find_bmc(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1332 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | struct smi_info *info; |
| 1334 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1335 | for (i = 0; i < SI_MAX_PARMS; i++) { |
| 1336 | if (!ports[i] && !addrs[i]) |
| 1337 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1339 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1340 | if (!info) |
| 1341 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1343 | info->addr_source = "hardcoded"; |
| 1344 | |
| 1345 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
| 1346 | info->si_type = SI_KCS; |
| 1347 | } else if (strcmp(si_type[i], "smic") == 0) { |
| 1348 | info->si_type = SI_SMIC; |
| 1349 | } else if (strcmp(si_type[i], "bt") == 0) { |
| 1350 | info->si_type = SI_BT; |
| 1351 | } else { |
| 1352 | printk(KERN_WARNING |
| 1353 | "ipmi_si: Interface type specified " |
| 1354 | "for interface %d, was invalid: %s\n", |
| 1355 | i, si_type[i]); |
| 1356 | kfree(info); |
| 1357 | continue; |
| 1358 | } |
| 1359 | |
| 1360 | if (ports[i]) { |
| 1361 | /* An I/O port */ |
| 1362 | info->io_setup = port_setup; |
| 1363 | info->io.addr_data = ports[i]; |
| 1364 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 1365 | } else if (addrs[i]) { |
| 1366 | /* A memory port */ |
| 1367 | info->io_setup = mem_setup; |
| 1368 | info->io.addr_data = addrs[i]; |
| 1369 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 1370 | } else { |
| 1371 | printk(KERN_WARNING |
| 1372 | "ipmi_si: Interface type specified " |
| 1373 | "for interface %d, " |
| 1374 | "but port and address were not set or " |
| 1375 | "set to zero.\n", i); |
| 1376 | kfree(info); |
| 1377 | continue; |
| 1378 | } |
| 1379 | |
| 1380 | info->io.addr = NULL; |
| 1381 | info->io.regspacing = regspacings[i]; |
| 1382 | if (!info->io.regspacing) |
| 1383 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1384 | info->io.regsize = regsizes[i]; |
| 1385 | if (!info->io.regsize) |
| 1386 | info->io.regsize = DEFAULT_REGSPACING; |
| 1387 | info->io.regshift = regshifts[i]; |
| 1388 | info->irq = irqs[i]; |
| 1389 | if (info->irq) |
| 1390 | info->irq_setup = std_irq_setup; |
| 1391 | |
| 1392 | try_smi_init(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | } |
| 1395 | |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 1396 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | |
| 1398 | #include <linux/acpi.h> |
| 1399 | |
| 1400 | /* Once we get an ACPI failure, we don't try any more, because we go |
| 1401 | through the tables sequentially. Once we don't find a table, there |
| 1402 | are no more. */ |
| 1403 | static int acpi_failure = 0; |
| 1404 | |
| 1405 | /* For GPE-type interrupts. */ |
| 1406 | static u32 ipmi_acpi_gpe(void *context) |
| 1407 | { |
| 1408 | struct smi_info *smi_info = context; |
| 1409 | unsigned long flags; |
| 1410 | #ifdef DEBUG_TIMING |
| 1411 | struct timeval t; |
| 1412 | #endif |
| 1413 | |
| 1414 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 1415 | |
| 1416 | spin_lock(&smi_info->count_lock); |
| 1417 | smi_info->interrupts++; |
| 1418 | spin_unlock(&smi_info->count_lock); |
| 1419 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1420 | if (atomic_read(&smi_info->stop_operation)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | goto out; |
| 1422 | |
| 1423 | #ifdef DEBUG_TIMING |
| 1424 | do_gettimeofday(&t); |
| 1425 | printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 1426 | #endif |
| 1427 | smi_event_handler(smi_info, 0); |
| 1428 | out: |
| 1429 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 1430 | |
| 1431 | return ACPI_INTERRUPT_HANDLED; |
| 1432 | } |
| 1433 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1434 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
| 1435 | { |
| 1436 | if (!info->irq) |
| 1437 | return; |
| 1438 | |
| 1439 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); |
| 1440 | } |
| 1441 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | static int acpi_gpe_irq_setup(struct smi_info *info) |
| 1443 | { |
| 1444 | acpi_status status; |
| 1445 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1446 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | return 0; |
| 1448 | |
| 1449 | /* FIXME - is level triggered right? */ |
| 1450 | status = acpi_install_gpe_handler(NULL, |
| 1451 | info->irq, |
| 1452 | ACPI_GPE_LEVEL_TRIGGERED, |
| 1453 | &ipmi_acpi_gpe, |
| 1454 | info); |
| 1455 | if (status != AE_OK) { |
| 1456 | printk(KERN_WARNING |
| 1457 | "ipmi_si: %s unable to claim ACPI GPE %d," |
| 1458 | " running polled\n", |
| 1459 | DEVICE_NAME, info->irq); |
| 1460 | info->irq = 0; |
| 1461 | return -EINVAL; |
| 1462 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1463 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | printk(" Using ACPI GPE %d\n", info->irq); |
| 1465 | return 0; |
| 1466 | } |
| 1467 | } |
| 1468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | /* |
| 1470 | * Defined at |
| 1471 | * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/TechPapers/IA64/hpspmi.pdf |
| 1472 | */ |
| 1473 | struct SPMITable { |
| 1474 | s8 Signature[4]; |
| 1475 | u32 Length; |
| 1476 | u8 Revision; |
| 1477 | u8 Checksum; |
| 1478 | s8 OEMID[6]; |
| 1479 | s8 OEMTableID[8]; |
| 1480 | s8 OEMRevision[4]; |
| 1481 | s8 CreatorID[4]; |
| 1482 | s8 CreatorRevision[4]; |
| 1483 | u8 InterfaceType; |
| 1484 | u8 IPMIlegacy; |
| 1485 | s16 SpecificationRevision; |
| 1486 | |
| 1487 | /* |
| 1488 | * Bit 0 - SCI interrupt supported |
| 1489 | * Bit 1 - I/O APIC/SAPIC |
| 1490 | */ |
| 1491 | u8 InterruptType; |
| 1492 | |
| 1493 | /* If bit 0 of InterruptType is set, then this is the SCI |
| 1494 | interrupt in the GPEx_STS register. */ |
| 1495 | u8 GPE; |
| 1496 | |
| 1497 | s16 Reserved; |
| 1498 | |
| 1499 | /* If bit 1 of InterruptType is set, then this is the I/O |
| 1500 | APIC/SAPIC interrupt. */ |
| 1501 | u32 GlobalSystemInterrupt; |
| 1502 | |
| 1503 | /* The actual register address. */ |
| 1504 | struct acpi_generic_address addr; |
| 1505 | |
| 1506 | u8 UID[4]; |
| 1507 | |
| 1508 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ |
| 1509 | }; |
| 1510 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1511 | static __devinit int try_init_acpi(struct SPMITable *spmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | { |
| 1513 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | char *io_type; |
| 1515 | u8 addr_space; |
| 1516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | if (spmi->IPMIlegacy != 1) { |
| 1518 | printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy); |
| 1519 | return -ENODEV; |
| 1520 | } |
| 1521 | |
| 1522 | if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
| 1523 | addr_space = IPMI_MEM_ADDR_SPACE; |
| 1524 | else |
| 1525 | addr_space = IPMI_IO_ADDR_SPACE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1526 | |
| 1527 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1528 | if (!info) { |
| 1529 | printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n"); |
| 1530 | return -ENOMEM; |
| 1531 | } |
| 1532 | |
| 1533 | info->addr_source = "ACPI"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | /* Figure out the interface type. */ |
| 1536 | switch (spmi->InterfaceType) |
| 1537 | { |
| 1538 | case 1: /* KCS */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1539 | info->si_type = SI_KCS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | case 2: /* SMIC */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1542 | info->si_type = SI_SMIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | case 3: /* BT */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1545 | info->si_type = SI_BT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | default: |
| 1548 | printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n", |
| 1549 | spmi->InterfaceType); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1550 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | return -EIO; |
| 1552 | } |
| 1553 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | if (spmi->InterruptType & 1) { |
| 1555 | /* We've got a GPE interrupt. */ |
| 1556 | info->irq = spmi->GPE; |
| 1557 | info->irq_setup = acpi_gpe_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | } else if (spmi->InterruptType & 2) { |
| 1559 | /* We've got an APIC/SAPIC interrupt. */ |
| 1560 | info->irq = spmi->GlobalSystemInterrupt; |
| 1561 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | } else { |
| 1563 | /* Use the default interrupt setting. */ |
| 1564 | info->irq = 0; |
| 1565 | info->irq_setup = NULL; |
| 1566 | } |
| 1567 | |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1568 | if (spmi->addr.register_bit_width) { |
| 1569 | /* A (hopefully) properly formed register bit width. */ |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1570 | info->io.regspacing = spmi->addr.register_bit_width / 8; |
| 1571 | } else { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1572 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1573 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1574 | info->io.regsize = info->io.regspacing; |
| 1575 | info->io.regshift = spmi->addr.register_bit_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | |
| 1577 | if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
| 1578 | io_type = "memory"; |
| 1579 | info->io_setup = mem_setup; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1580 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | } else if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
| 1582 | io_type = "I/O"; |
| 1583 | info->io_setup = port_setup; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1584 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | } else { |
| 1586 | kfree(info); |
| 1587 | printk("ipmi_si: Unknown ACPI I/O Address type\n"); |
| 1588 | return -EIO; |
| 1589 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1590 | info->io.addr_data = spmi->addr.address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1592 | try_smi_init(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | return 0; |
| 1595 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1596 | |
| 1597 | static __devinit void acpi_find_bmc(void) |
| 1598 | { |
| 1599 | acpi_status status; |
| 1600 | struct SPMITable *spmi; |
| 1601 | int i; |
| 1602 | |
| 1603 | if (acpi_disabled) |
| 1604 | return; |
| 1605 | |
| 1606 | if (acpi_failure) |
| 1607 | return; |
| 1608 | |
| 1609 | for (i = 0; ; i++) { |
| 1610 | status = acpi_get_firmware_table("SPMI", i+1, |
| 1611 | ACPI_LOGICAL_ADDRESSING, |
| 1612 | (struct acpi_table_header **) |
| 1613 | &spmi); |
| 1614 | if (status != AE_OK) |
| 1615 | return; |
| 1616 | |
| 1617 | try_init_acpi(spmi); |
| 1618 | } |
| 1619 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | #endif |
| 1621 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 1622 | #ifdef CONFIG_DMI |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1623 | struct dmi_ipmi_data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | { |
| 1625 | u8 type; |
| 1626 | u8 addr_space; |
| 1627 | unsigned long base_addr; |
| 1628 | u8 irq; |
| 1629 | u8 offset; |
| 1630 | u8 slave_addr; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1631 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1633 | static int __devinit decode_dmi(struct dmi_header *dm, |
| 1634 | struct dmi_ipmi_data *dmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1636 | u8 *data = (u8 *)dm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | unsigned long base_addr; |
| 1638 | u8 reg_spacing; |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 1639 | u8 len = dm->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1641 | dmi->type = data[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | |
| 1643 | memcpy(&base_addr, data+8, sizeof(unsigned long)); |
| 1644 | if (len >= 0x11) { |
| 1645 | if (base_addr & 1) { |
| 1646 | /* I/O */ |
| 1647 | base_addr &= 0xFFFE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1648 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | } |
| 1650 | else { |
| 1651 | /* Memory */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1652 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | } |
| 1654 | /* If bit 4 of byte 0x10 is set, then the lsb for the address |
| 1655 | is odd. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1656 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1658 | dmi->irq = data[0x11]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | |
| 1660 | /* The top two bits of byte 0x10 hold the register spacing. */ |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 1661 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | switch(reg_spacing){ |
| 1663 | case 0x00: /* Byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1664 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | break; |
| 1666 | case 0x01: /* 32-bit boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1667 | dmi->offset = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | break; |
| 1669 | case 0x02: /* 16-byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1670 | dmi->offset = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | break; |
| 1672 | default: |
| 1673 | /* Some other interface, just ignore it. */ |
| 1674 | return -EIO; |
| 1675 | } |
| 1676 | } else { |
| 1677 | /* Old DMI spec. */ |
Corey Minyard | 9206880 | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1678 | /* Note that technically, the lower bit of the base |
| 1679 | * address should be 1 if the address is I/O and 0 if |
| 1680 | * the address is in memory. So many systems get that |
| 1681 | * wrong (and all that I have seen are I/O) so we just |
| 1682 | * ignore that bit and assume I/O. Systems that use |
| 1683 | * memory should use the newer spec, anyway. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1684 | dmi->base_addr = base_addr & 0xfffe; |
| 1685 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
| 1686 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | } |
| 1688 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1689 | dmi->slave_addr = data[6]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1691 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | } |
| 1693 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1694 | static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1696 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1698 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1699 | if (!info) { |
| 1700 | printk(KERN_ERR |
| 1701 | "ipmi_si: Could not allocate SI data\n"); |
| 1702 | return; |
| 1703 | } |
| 1704 | |
| 1705 | info->addr_source = "SMBIOS"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1707 | switch (ipmi_data->type) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1708 | case 0x01: /* KCS */ |
| 1709 | info->si_type = SI_KCS; |
| 1710 | break; |
| 1711 | case 0x02: /* SMIC */ |
| 1712 | info->si_type = SI_SMIC; |
| 1713 | break; |
| 1714 | case 0x03: /* BT */ |
| 1715 | info->si_type = SI_BT; |
| 1716 | break; |
| 1717 | default: |
| 1718 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | } |
| 1720 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1721 | switch (ipmi_data->addr_space) { |
| 1722 | case IPMI_MEM_ADDR_SPACE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | info->io_setup = mem_setup; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1724 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 1725 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1727 | case IPMI_IO_ADDR_SPACE: |
| 1728 | info->io_setup = port_setup; |
| 1729 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 1730 | break; |
| 1731 | |
| 1732 | default: |
| 1733 | kfree(info); |
| 1734 | printk(KERN_WARNING |
| 1735 | "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n", |
| 1736 | ipmi_data->addr_space); |
| 1737 | return; |
| 1738 | } |
| 1739 | info->io.addr_data = ipmi_data->base_addr; |
| 1740 | |
| 1741 | info->io.regspacing = ipmi_data->offset; |
| 1742 | if (!info->io.regspacing) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1744 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1745 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | |
| 1747 | info->slave_addr = ipmi_data->slave_addr; |
| 1748 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1749 | info->irq = ipmi_data->irq; |
| 1750 | if (info->irq) |
| 1751 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1753 | try_smi_init(info); |
| 1754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1756 | static void __devinit dmi_find_bmc(void) |
| 1757 | { |
| 1758 | struct dmi_device *dev = NULL; |
| 1759 | struct dmi_ipmi_data data; |
| 1760 | int rv; |
| 1761 | |
| 1762 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { |
Jeff Garzik | 397f4eb | 2006-10-03 01:13:52 -0700 | [diff] [blame] | 1763 | memset(&data, 0, sizeof(data)); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1764 | rv = decode_dmi((struct dmi_header *) dev->device_data, &data); |
| 1765 | if (!rv) |
| 1766 | try_init_dmi(&data); |
| 1767 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | } |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 1769 | #endif /* CONFIG_DMI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | |
| 1771 | #ifdef CONFIG_PCI |
| 1772 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1773 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
| 1774 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 |
| 1775 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff |
| 1776 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 |
| 1777 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 |
| 1778 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 |
| 1779 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | #define PCI_HP_VENDOR_ID 0x103C |
| 1781 | #define PCI_MMC_DEVICE_ID 0x121A |
| 1782 | #define PCI_MMC_ADDR_CW 0x10 |
| 1783 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1784 | static void ipmi_pci_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1786 | struct pci_dev *pdev = info->addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1788 | pci_disable_device(pdev); |
| 1789 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1790 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1791 | static int __devinit ipmi_pci_probe(struct pci_dev *pdev, |
| 1792 | const struct pci_device_id *ent) |
| 1793 | { |
| 1794 | int rv; |
| 1795 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; |
| 1796 | struct smi_info *info; |
| 1797 | int first_reg_offset = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1799 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1800 | if (!info) |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 1801 | return -ENOMEM; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1802 | |
| 1803 | info->addr_source = "PCI"; |
| 1804 | |
| 1805 | switch (class_type) { |
| 1806 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: |
| 1807 | info->si_type = SI_SMIC; |
| 1808 | break; |
| 1809 | |
| 1810 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
| 1811 | info->si_type = SI_KCS; |
| 1812 | break; |
| 1813 | |
| 1814 | case PCI_ERMC_CLASSCODE_TYPE_BT: |
| 1815 | info->si_type = SI_BT; |
| 1816 | break; |
| 1817 | |
| 1818 | default: |
| 1819 | kfree(info); |
| 1820 | printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n", |
| 1821 | pci_name(pdev), class_type); |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 1822 | return -ENOMEM; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1823 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1825 | rv = pci_enable_device(pdev); |
| 1826 | if (rv) { |
| 1827 | printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n", |
| 1828 | pci_name(pdev)); |
| 1829 | kfree(info); |
| 1830 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | } |
| 1832 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1833 | info->addr_source_cleanup = ipmi_pci_cleanup; |
| 1834 | info->addr_source_data = pdev; |
| 1835 | |
| 1836 | if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID) |
| 1837 | first_reg_offset = 1; |
| 1838 | |
| 1839 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
| 1840 | info->io_setup = port_setup; |
| 1841 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 1842 | } else { |
| 1843 | info->io_setup = mem_setup; |
| 1844 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1846 | info->io.addr_data = pci_resource_start(pdev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1848 | info->io.regspacing = DEFAULT_REGSPACING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1850 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1852 | info->irq = pdev->irq; |
| 1853 | if (info->irq) |
| 1854 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1856 | info->dev = &pdev->dev; |
| 1857 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1858 | return try_smi_init(info); |
| 1859 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1861 | static void __devexit ipmi_pci_remove(struct pci_dev *pdev) |
| 1862 | { |
| 1863 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1865 | #ifdef CONFIG_PM |
| 1866 | static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| 1867 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | return 0; |
| 1869 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1871 | static int ipmi_pci_resume(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1873 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1875 | #endif |
| 1876 | |
| 1877 | static struct pci_device_id ipmi_pci_devices[] = { |
| 1878 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, |
Yvan Seth | d13adb6 | 2006-11-02 22:07:13 -0800 | [diff] [blame] | 1879 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1880 | }; |
| 1881 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); |
| 1882 | |
| 1883 | static struct pci_driver ipmi_pci_driver = { |
| 1884 | .name = DEVICE_NAME, |
| 1885 | .id_table = ipmi_pci_devices, |
| 1886 | .probe = ipmi_pci_probe, |
| 1887 | .remove = __devexit_p(ipmi_pci_remove), |
| 1888 | #ifdef CONFIG_PM |
| 1889 | .suspend = ipmi_pci_suspend, |
| 1890 | .resume = ipmi_pci_resume, |
| 1891 | #endif |
| 1892 | }; |
| 1893 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | |
| 1895 | |
| 1896 | static int try_get_dev_id(struct smi_info *smi_info) |
| 1897 | { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1898 | unsigned char msg[2]; |
| 1899 | unsigned char *resp; |
| 1900 | unsigned long resp_len; |
| 1901 | enum si_sm_result smi_result; |
| 1902 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | |
| 1904 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1905 | if (!resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | return -ENOMEM; |
| 1907 | |
| 1908 | /* Do a Get Device ID command, since it comes back with some |
| 1909 | useful info. */ |
| 1910 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 1911 | msg[1] = IPMI_GET_DEVICE_ID_CMD; |
| 1912 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 1913 | |
| 1914 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 1915 | for (;;) |
| 1916 | { |
Corey Minyard | c3e7e79 | 2005-11-07 01:00:02 -0800 | [diff] [blame] | 1917 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
| 1918 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 1919 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | smi_result = smi_info->handlers->event( |
| 1921 | smi_info->si_sm, 100); |
| 1922 | } |
| 1923 | else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) |
| 1924 | { |
| 1925 | smi_result = smi_info->handlers->event( |
| 1926 | smi_info->si_sm, 0); |
| 1927 | } |
| 1928 | else |
| 1929 | break; |
| 1930 | } |
| 1931 | if (smi_result == SI_SM_HOSED) { |
| 1932 | /* We couldn't get the state machine to run, so whatever's at |
| 1933 | the port is probably not an IPMI SMI interface. */ |
| 1934 | rv = -ENODEV; |
| 1935 | goto out; |
| 1936 | } |
| 1937 | |
| 1938 | /* Otherwise, we got some data. */ |
| 1939 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 1940 | resp, IPMI_MAX_MSG_LENGTH); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1941 | if (resp_len < 14) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | /* That's odd, it should be longer. */ |
| 1943 | rv = -EINVAL; |
| 1944 | goto out; |
| 1945 | } |
| 1946 | |
| 1947 | if ((resp[1] != IPMI_GET_DEVICE_ID_CMD) || (resp[2] != 0)) { |
| 1948 | /* That's odd, it shouldn't be able to fail. */ |
| 1949 | rv = -EINVAL; |
| 1950 | goto out; |
| 1951 | } |
| 1952 | |
| 1953 | /* Record info from the get device id, in case we need it. */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1954 | 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] | 1955 | |
| 1956 | out: |
| 1957 | kfree(resp); |
| 1958 | return rv; |
| 1959 | } |
| 1960 | |
| 1961 | static int type_file_read_proc(char *page, char **start, off_t off, |
| 1962 | int count, int *eof, void *data) |
| 1963 | { |
| 1964 | char *out = (char *) page; |
| 1965 | struct smi_info *smi = data; |
| 1966 | |
| 1967 | switch (smi->si_type) { |
| 1968 | case SI_KCS: |
| 1969 | return sprintf(out, "kcs\n"); |
| 1970 | case SI_SMIC: |
| 1971 | return sprintf(out, "smic\n"); |
| 1972 | case SI_BT: |
| 1973 | return sprintf(out, "bt\n"); |
| 1974 | default: |
| 1975 | return 0; |
| 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | static int stat_file_read_proc(char *page, char **start, off_t off, |
| 1980 | int count, int *eof, void *data) |
| 1981 | { |
| 1982 | char *out = (char *) page; |
| 1983 | struct smi_info *smi = data; |
| 1984 | |
| 1985 | out += sprintf(out, "interrupts_enabled: %d\n", |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1986 | smi->irq && !smi->interrupt_disabled); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | out += sprintf(out, "short_timeouts: %ld\n", |
| 1988 | smi->short_timeouts); |
| 1989 | out += sprintf(out, "long_timeouts: %ld\n", |
| 1990 | smi->long_timeouts); |
| 1991 | out += sprintf(out, "timeout_restarts: %ld\n", |
| 1992 | smi->timeout_restarts); |
| 1993 | out += sprintf(out, "idles: %ld\n", |
| 1994 | smi->idles); |
| 1995 | out += sprintf(out, "interrupts: %ld\n", |
| 1996 | smi->interrupts); |
| 1997 | out += sprintf(out, "attentions: %ld\n", |
| 1998 | smi->attentions); |
| 1999 | out += sprintf(out, "flag_fetches: %ld\n", |
| 2000 | smi->flag_fetches); |
| 2001 | out += sprintf(out, "hosed_count: %ld\n", |
| 2002 | smi->hosed_count); |
| 2003 | out += sprintf(out, "complete_transactions: %ld\n", |
| 2004 | smi->complete_transactions); |
| 2005 | out += sprintf(out, "events: %ld\n", |
| 2006 | smi->events); |
| 2007 | out += sprintf(out, "watchdog_pretimeouts: %ld\n", |
| 2008 | smi->watchdog_pretimeouts); |
| 2009 | out += sprintf(out, "incoming_messages: %ld\n", |
| 2010 | smi->incoming_messages); |
| 2011 | |
| 2012 | return (out - ((char *) page)); |
| 2013 | } |
| 2014 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2015 | /* |
| 2016 | * oem_data_avail_to_receive_msg_avail |
| 2017 | * @info - smi_info structure with msg_flags set |
| 2018 | * |
| 2019 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL |
| 2020 | * Returns 1 indicating need to re-run handle_flags(). |
| 2021 | */ |
| 2022 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) |
| 2023 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2024 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
| 2025 | RECEIVE_MSG_AVAIL); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2026 | return 1; |
| 2027 | } |
| 2028 | |
| 2029 | /* |
| 2030 | * setup_dell_poweredge_oem_data_handler |
| 2031 | * @info - smi_info.device_id must be populated |
| 2032 | * |
| 2033 | * Systems that match, but have firmware version < 1.40 may assert |
| 2034 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that |
| 2035 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL |
| 2036 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags |
| 2037 | * as RECEIVE_MSG_AVAIL instead. |
| 2038 | * |
| 2039 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* |
| 2040 | * assert the OEM[012] bits, and if it did, the driver would have to |
| 2041 | * change to handle that properly, we don't actually check for the |
| 2042 | * firmware version. |
| 2043 | * Device ID = 0x20 BMC on PowerEdge 8G servers |
| 2044 | * Device Revision = 0x80 |
| 2045 | * Firmware Revision1 = 0x01 BMC version 1.40 |
| 2046 | * Firmware Revision2 = 0x40 BCD encoded |
| 2047 | * IPMI Version = 0x51 IPMI 1.5 |
| 2048 | * Manufacturer ID = A2 02 00 Dell IANA |
| 2049 | * |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2050 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
| 2051 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. |
| 2052 | * |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2053 | */ |
| 2054 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 |
| 2055 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 |
| 2056 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2057 | #define DELL_IANA_MFR_ID 0x0002a2 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2058 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
| 2059 | { |
| 2060 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2061 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2062 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
| 2063 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2064 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2065 | smi_info->oem_data_avail_handler = |
| 2066 | oem_data_avail_to_receive_msg_avail; |
| 2067 | } |
| 2068 | else if (ipmi_version_major(id) < 1 || |
| 2069 | (ipmi_version_major(id) == 1 && |
| 2070 | ipmi_version_minor(id) < 5)) { |
| 2071 | smi_info->oem_data_avail_handler = |
| 2072 | oem_data_avail_to_receive_msg_avail; |
| 2073 | } |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2074 | } |
| 2075 | } |
| 2076 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2077 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
| 2078 | static void return_hosed_msg_badsize(struct smi_info *smi_info) |
| 2079 | { |
| 2080 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 2081 | |
| 2082 | /* Make it a reponse */ |
| 2083 | msg->rsp[0] = msg->data[0] | 4; |
| 2084 | msg->rsp[1] = msg->data[1]; |
| 2085 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; |
| 2086 | msg->rsp_size = 3; |
| 2087 | smi_info->curr_msg = NULL; |
| 2088 | deliver_recv_msg(smi_info, msg); |
| 2089 | } |
| 2090 | |
| 2091 | /* |
| 2092 | * dell_poweredge_bt_xaction_handler |
| 2093 | * @info - smi_info.device_id must be populated |
| 2094 | * |
| 2095 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will |
| 2096 | * not respond to a Get SDR command if the length of the data |
| 2097 | * requested is exactly 0x3A, which leads to command timeouts and no |
| 2098 | * data returned. This intercepts such commands, and causes userspace |
| 2099 | * callers to try again with a different-sized buffer, which succeeds. |
| 2100 | */ |
| 2101 | |
| 2102 | #define STORAGE_NETFN 0x0A |
| 2103 | #define STORAGE_CMD_GET_SDR 0x23 |
| 2104 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, |
| 2105 | unsigned long unused, |
| 2106 | void *in) |
| 2107 | { |
| 2108 | struct smi_info *smi_info = in; |
| 2109 | unsigned char *data = smi_info->curr_msg->data; |
| 2110 | unsigned int size = smi_info->curr_msg->data_size; |
| 2111 | if (size >= 8 && |
| 2112 | (data[0]>>2) == STORAGE_NETFN && |
| 2113 | data[1] == STORAGE_CMD_GET_SDR && |
| 2114 | data[7] == 0x3A) { |
| 2115 | return_hosed_msg_badsize(smi_info); |
| 2116 | return NOTIFY_STOP; |
| 2117 | } |
| 2118 | return NOTIFY_DONE; |
| 2119 | } |
| 2120 | |
| 2121 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { |
| 2122 | .notifier_call = dell_poweredge_bt_xaction_handler, |
| 2123 | }; |
| 2124 | |
| 2125 | /* |
| 2126 | * setup_dell_poweredge_bt_xaction_handler |
| 2127 | * @info - smi_info.device_id must be filled in already |
| 2128 | * |
| 2129 | * Fills in smi_info.device_id.start_transaction_pre_hook |
| 2130 | * when we know what function to use there. |
| 2131 | */ |
| 2132 | static void |
| 2133 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) |
| 2134 | { |
| 2135 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2136 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2137 | smi_info->si_type == SI_BT) |
| 2138 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); |
| 2139 | } |
| 2140 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2141 | /* |
| 2142 | * setup_oem_data_handler |
| 2143 | * @info - smi_info.device_id must be filled in already |
| 2144 | * |
| 2145 | * Fills in smi_info.device_id.oem_data_available_handler |
| 2146 | * when we know what function to use there. |
| 2147 | */ |
| 2148 | |
| 2149 | static void setup_oem_data_handler(struct smi_info *smi_info) |
| 2150 | { |
| 2151 | setup_dell_poweredge_oem_data_handler(smi_info); |
| 2152 | } |
| 2153 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2154 | static void setup_xaction_handlers(struct smi_info *smi_info) |
| 2155 | { |
| 2156 | setup_dell_poweredge_bt_xaction_handler(smi_info); |
| 2157 | } |
| 2158 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2159 | static inline void wait_for_timer_and_thread(struct smi_info *smi_info) |
| 2160 | { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2161 | if (smi_info->intf) { |
| 2162 | /* The timer and thread are only running if the |
| 2163 | interface has been started up and registered. */ |
| 2164 | if (smi_info->thread != NULL) |
| 2165 | kthread_stop(smi_info->thread); |
| 2166 | del_timer_sync(&smi_info->si_timer); |
| 2167 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2168 | } |
| 2169 | |
Randy Dunlap | 7420884 | 2006-04-18 22:21:52 -0700 | [diff] [blame] | 2170 | static __devinitdata struct ipmi_default_vals |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2172 | int type; |
| 2173 | int port; |
Randy Dunlap | 7420884 | 2006-04-18 22:21:52 -0700 | [diff] [blame] | 2174 | } ipmi_defaults[] = |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2175 | { |
| 2176 | { .type = SI_KCS, .port = 0xca2 }, |
| 2177 | { .type = SI_SMIC, .port = 0xca9 }, |
| 2178 | { .type = SI_BT, .port = 0xe4 }, |
| 2179 | { .port = 0 } |
| 2180 | }; |
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 | static __devinit void default_find_bmc(void) |
| 2183 | { |
| 2184 | struct smi_info *info; |
| 2185 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2187 | for (i = 0; ; i++) { |
| 2188 | if (!ipmi_defaults[i].port) |
| 2189 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2191 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2192 | if (!info) |
| 2193 | return; |
| 2194 | |
| 2195 | info->addr_source = NULL; |
| 2196 | |
| 2197 | info->si_type = ipmi_defaults[i].type; |
| 2198 | info->io_setup = port_setup; |
| 2199 | info->io.addr_data = ipmi_defaults[i].port; |
| 2200 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2201 | |
| 2202 | info->io.addr = NULL; |
| 2203 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2204 | info->io.regsize = DEFAULT_REGSPACING; |
| 2205 | info->io.regshift = 0; |
| 2206 | |
| 2207 | if (try_smi_init(info) == 0) { |
| 2208 | /* Found one... */ |
| 2209 | printk(KERN_INFO "ipmi_si: Found default %s state" |
| 2210 | " machine at %s address 0x%lx\n", |
| 2211 | si_to_str[info->si_type], |
| 2212 | addr_space_to_str[info->io.addr_type], |
| 2213 | info->io.addr_data); |
| 2214 | return; |
| 2215 | } |
| 2216 | } |
| 2217 | } |
| 2218 | |
| 2219 | static int is_new_interface(struct smi_info *info) |
| 2220 | { |
| 2221 | struct smi_info *e; |
| 2222 | |
| 2223 | list_for_each_entry(e, &smi_infos, link) { |
| 2224 | if (e->io.addr_type != info->io.addr_type) |
| 2225 | continue; |
| 2226 | if (e->io.addr_data == info->io.addr_data) |
| 2227 | return 0; |
| 2228 | } |
| 2229 | |
| 2230 | return 1; |
| 2231 | } |
| 2232 | |
| 2233 | static int try_smi_init(struct smi_info *new_smi) |
| 2234 | { |
| 2235 | int rv; |
| 2236 | |
| 2237 | if (new_smi->addr_source) { |
| 2238 | printk(KERN_INFO "ipmi_si: Trying %s-specified %s state" |
| 2239 | " machine at %s address 0x%lx, slave address 0x%x," |
| 2240 | " irq %d\n", |
| 2241 | new_smi->addr_source, |
| 2242 | si_to_str[new_smi->si_type], |
| 2243 | addr_space_to_str[new_smi->io.addr_type], |
| 2244 | new_smi->io.addr_data, |
| 2245 | new_smi->slave_addr, new_smi->irq); |
| 2246 | } |
| 2247 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2248 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2249 | if (!is_new_interface(new_smi)) { |
| 2250 | printk(KERN_WARNING "ipmi_si: duplicate interface\n"); |
| 2251 | rv = -EBUSY; |
| 2252 | goto out_err; |
| 2253 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | |
| 2255 | /* So we know not to free it unless we have allocated one. */ |
| 2256 | new_smi->intf = NULL; |
| 2257 | new_smi->si_sm = NULL; |
| 2258 | new_smi->handlers = NULL; |
| 2259 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2260 | switch (new_smi->si_type) { |
| 2261 | case SI_KCS: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | new_smi->handlers = &kcs_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2263 | break; |
| 2264 | |
| 2265 | case SI_SMIC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | new_smi->handlers = &smic_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2267 | break; |
| 2268 | |
| 2269 | case SI_BT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | new_smi->handlers = &bt_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2271 | break; |
| 2272 | |
| 2273 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | /* No support for anything else yet. */ |
| 2275 | rv = -EIO; |
| 2276 | goto out_err; |
| 2277 | } |
| 2278 | |
| 2279 | /* Allocate the state machine's data and initialize it. */ |
| 2280 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2281 | if (!new_smi->si_sm) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | printk(" Could not allocate state machine memory\n"); |
| 2283 | rv = -ENOMEM; |
| 2284 | goto out_err; |
| 2285 | } |
| 2286 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, |
| 2287 | &new_smi->io); |
| 2288 | |
| 2289 | /* Now that we know the I/O size, we can set up the I/O. */ |
| 2290 | rv = new_smi->io_setup(new_smi); |
| 2291 | if (rv) { |
| 2292 | printk(" Could not set up I/O space\n"); |
| 2293 | goto out_err; |
| 2294 | } |
| 2295 | |
| 2296 | spin_lock_init(&(new_smi->si_lock)); |
| 2297 | spin_lock_init(&(new_smi->msg_lock)); |
| 2298 | spin_lock_init(&(new_smi->count_lock)); |
| 2299 | |
| 2300 | /* Do low-level detection first. */ |
| 2301 | if (new_smi->handlers->detect(new_smi->si_sm)) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2302 | if (new_smi->addr_source) |
| 2303 | printk(KERN_INFO "ipmi_si: Interface detection" |
| 2304 | " failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | rv = -ENODEV; |
| 2306 | goto out_err; |
| 2307 | } |
| 2308 | |
| 2309 | /* Attempt a get device id command. If it fails, we probably |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2310 | don't have a BMC here. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | rv = try_get_dev_id(new_smi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2312 | if (rv) { |
| 2313 | if (new_smi->addr_source) |
| 2314 | printk(KERN_INFO "ipmi_si: There appears to be no BMC" |
| 2315 | " at this location\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | goto out_err; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2317 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2319 | setup_oem_data_handler(new_smi); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2320 | setup_xaction_handlers(new_smi); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | /* Try to claim any interrupts. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2323 | if (new_smi->irq_setup) |
| 2324 | new_smi->irq_setup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | |
| 2326 | INIT_LIST_HEAD(&(new_smi->xmit_msgs)); |
| 2327 | INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs)); |
| 2328 | new_smi->curr_msg = NULL; |
| 2329 | atomic_set(&new_smi->req_events, 0); |
| 2330 | new_smi->run_to_completion = 0; |
| 2331 | |
| 2332 | new_smi->interrupt_disabled = 0; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2333 | atomic_set(&new_smi->stop_operation, 0); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2334 | new_smi->intf_num = smi_num; |
| 2335 | smi_num++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | |
| 2337 | /* Start clearing the flags before we enable interrupts or the |
| 2338 | timer to avoid racing with the timer. */ |
| 2339 | start_clear_flags(new_smi); |
| 2340 | /* IRQ is defined to be set when non-zero. */ |
| 2341 | if (new_smi->irq) |
| 2342 | new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ; |
| 2343 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2344 | if (!new_smi->dev) { |
| 2345 | /* If we don't already have a device from something |
| 2346 | * else (like PCI), then register a new one. */ |
| 2347 | new_smi->pdev = platform_device_alloc("ipmi_si", |
| 2348 | new_smi->intf_num); |
| 2349 | if (rv) { |
| 2350 | printk(KERN_ERR |
| 2351 | "ipmi_si_intf:" |
| 2352 | " Unable to allocate platform device\n"); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2353 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2354 | } |
| 2355 | new_smi->dev = &new_smi->pdev->dev; |
| 2356 | new_smi->dev->driver = &ipmi_driver; |
| 2357 | |
Zhang, Yanmin | b48f545 | 2006-11-16 01:19:08 -0800 | [diff] [blame] | 2358 | rv = platform_device_add(new_smi->pdev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2359 | if (rv) { |
| 2360 | printk(KERN_ERR |
| 2361 | "ipmi_si_intf:" |
| 2362 | " Unable to register system interface device:" |
| 2363 | " %d\n", |
| 2364 | rv); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2365 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2366 | } |
| 2367 | new_smi->dev_registered = 1; |
| 2368 | } |
| 2369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | rv = ipmi_register_smi(&handlers, |
| 2371 | new_smi, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2372 | &new_smi->device_id, |
| 2373 | new_smi->dev, |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2374 | "bmc", |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2375 | new_smi->slave_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | if (rv) { |
| 2377 | printk(KERN_ERR |
| 2378 | "ipmi_si: Unable to register device: error %d\n", |
| 2379 | rv); |
| 2380 | goto out_err_stop_timer; |
| 2381 | } |
| 2382 | |
| 2383 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", |
| 2384 | type_file_read_proc, NULL, |
| 2385 | new_smi, THIS_MODULE); |
| 2386 | if (rv) { |
| 2387 | printk(KERN_ERR |
| 2388 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2389 | rv); |
| 2390 | goto out_err_stop_timer; |
| 2391 | } |
| 2392 | |
| 2393 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", |
| 2394 | stat_file_read_proc, NULL, |
| 2395 | new_smi, THIS_MODULE); |
| 2396 | if (rv) { |
| 2397 | printk(KERN_ERR |
| 2398 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2399 | rv); |
| 2400 | goto out_err_stop_timer; |
| 2401 | } |
| 2402 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2403 | list_add_tail(&new_smi->link, &smi_infos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2405 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2406 | |
| 2407 | printk(" IPMI %s interface initialized\n",si_to_str[new_smi->si_type]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2408 | |
| 2409 | return 0; |
| 2410 | |
| 2411 | out_err_stop_timer: |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2412 | atomic_inc(&new_smi->stop_operation); |
| 2413 | wait_for_timer_and_thread(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | |
| 2415 | out_err: |
| 2416 | if (new_smi->intf) |
| 2417 | ipmi_unregister_smi(new_smi->intf); |
| 2418 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2419 | if (new_smi->irq_cleanup) |
| 2420 | new_smi->irq_cleanup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2421 | |
| 2422 | /* Wait until we know that we are out of any interrupt |
| 2423 | handlers might have been running before we freed the |
| 2424 | interrupt. */ |
Paul E. McKenney | fbd568a3e | 2005-05-01 08:59:04 -0700 | [diff] [blame] | 2425 | synchronize_sched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | |
| 2427 | if (new_smi->si_sm) { |
| 2428 | if (new_smi->handlers) |
| 2429 | new_smi->handlers->cleanup(new_smi->si_sm); |
| 2430 | kfree(new_smi->si_sm); |
| 2431 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2432 | if (new_smi->addr_source_cleanup) |
| 2433 | new_smi->addr_source_cleanup(new_smi); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 2434 | if (new_smi->io_cleanup) |
| 2435 | new_smi->io_cleanup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2437 | if (new_smi->dev_registered) |
| 2438 | platform_device_unregister(new_smi->pdev); |
| 2439 | |
| 2440 | kfree(new_smi); |
| 2441 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2442 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2444 | return rv; |
| 2445 | } |
| 2446 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2447 | static __devinit int init_ipmi_si(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2448 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2449 | int i; |
| 2450 | char *str; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2451 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2452 | |
| 2453 | if (initialized) |
| 2454 | return 0; |
| 2455 | initialized = 1; |
| 2456 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2457 | /* Register the device drivers. */ |
| 2458 | rv = driver_register(&ipmi_driver); |
| 2459 | if (rv) { |
| 2460 | printk(KERN_ERR |
| 2461 | "init_ipmi_si: Unable to register driver: %d\n", |
| 2462 | rv); |
| 2463 | return rv; |
| 2464 | } |
| 2465 | |
| 2466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2467 | /* Parse out the si_type string into its components. */ |
| 2468 | str = si_type_str; |
| 2469 | if (*str != '\0') { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2470 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2471 | si_type[i] = str; |
| 2472 | str = strchr(str, ','); |
| 2473 | if (str) { |
| 2474 | *str = '\0'; |
| 2475 | str++; |
| 2476 | } else { |
| 2477 | break; |
| 2478 | } |
| 2479 | } |
| 2480 | } |
| 2481 | |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2482 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2483 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2484 | hardcode_find_bmc(); |
| 2485 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2486 | #ifdef CONFIG_DMI |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2487 | dmi_find_bmc(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2488 | #endif |
| 2489 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2490 | #ifdef CONFIG_ACPI |
| 2491 | if (si_trydefaults) |
| 2492 | acpi_find_bmc(); |
| 2493 | #endif |
| 2494 | |
| 2495 | #ifdef CONFIG_PCI |
| 2496 | pci_module_init(&ipmi_pci_driver); |
| 2497 | #endif |
| 2498 | |
| 2499 | if (si_trydefaults) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2500 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2501 | if (list_empty(&smi_infos)) { |
| 2502 | /* No BMC was found, try defaults. */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2503 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2504 | default_find_bmc(); |
| 2505 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2506 | mutex_unlock(&smi_infos_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2507 | } |
| 2508 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2510 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2511 | if (list_empty(&smi_infos)) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2512 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2513 | #ifdef CONFIG_PCI |
| 2514 | pci_unregister_driver(&ipmi_pci_driver); |
| 2515 | #endif |
Arnaud Patard | 55ebcc3 | 2006-09-16 12:15:36 -0700 | [diff] [blame] | 2516 | driver_unregister(&ipmi_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2517 | printk("ipmi_si: Unable to find any System Interface(s)\n"); |
| 2518 | return -ENODEV; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2519 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2520 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2521 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2523 | } |
| 2524 | module_init(init_ipmi_si); |
| 2525 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2526 | static void __devexit cleanup_one_si(struct smi_info *to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2527 | { |
| 2528 | int rv; |
| 2529 | unsigned long flags; |
| 2530 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2531 | if (!to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2532 | return; |
| 2533 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2534 | list_del(&to_clean->link); |
| 2535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2536 | /* Tell the timer and interrupt handlers that we are shutting |
| 2537 | down. */ |
| 2538 | spin_lock_irqsave(&(to_clean->si_lock), flags); |
| 2539 | spin_lock(&(to_clean->msg_lock)); |
| 2540 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2541 | atomic_inc(&to_clean->stop_operation); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2542 | |
| 2543 | if (to_clean->irq_cleanup) |
| 2544 | to_clean->irq_cleanup(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2545 | |
| 2546 | spin_unlock(&(to_clean->msg_lock)); |
| 2547 | spin_unlock_irqrestore(&(to_clean->si_lock), flags); |
| 2548 | |
| 2549 | /* Wait until we know that we are out of any interrupt |
| 2550 | handlers might have been running before we freed the |
| 2551 | interrupt. */ |
Paul E. McKenney | fbd568a3e | 2005-05-01 08:59:04 -0700 | [diff] [blame] | 2552 | synchronize_sched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2554 | wait_for_timer_and_thread(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | |
| 2556 | /* Interrupts and timeouts are stopped, now make sure the |
| 2557 | interface is in a clean state. */ |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2558 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2559 | poll(to_clean); |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 2560 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | } |
| 2562 | |
| 2563 | rv = ipmi_unregister_smi(to_clean->intf); |
| 2564 | if (rv) { |
| 2565 | printk(KERN_ERR |
| 2566 | "ipmi_si: Unable to unregister device: errno=%d\n", |
| 2567 | rv); |
| 2568 | } |
| 2569 | |
| 2570 | to_clean->handlers->cleanup(to_clean->si_sm); |
| 2571 | |
| 2572 | kfree(to_clean->si_sm); |
| 2573 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2574 | if (to_clean->addr_source_cleanup) |
| 2575 | to_clean->addr_source_cleanup(to_clean); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 2576 | if (to_clean->io_cleanup) |
| 2577 | to_clean->io_cleanup(to_clean); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2578 | |
| 2579 | if (to_clean->dev_registered) |
| 2580 | platform_device_unregister(to_clean->pdev); |
| 2581 | |
| 2582 | kfree(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2583 | } |
| 2584 | |
| 2585 | static __exit void cleanup_ipmi_si(void) |
| 2586 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2587 | struct smi_info *e, *tmp_e; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2588 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2589 | if (!initialized) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | return; |
| 2591 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2592 | #ifdef CONFIG_PCI |
| 2593 | pci_unregister_driver(&ipmi_pci_driver); |
| 2594 | #endif |
| 2595 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2596 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2597 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
| 2598 | cleanup_one_si(e); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2599 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2600 | |
| 2601 | driver_unregister(&ipmi_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | } |
| 2603 | module_exit(cleanup_ipmi_si); |
| 2604 | |
| 2605 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2606 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
| 2607 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT system interfaces."); |