Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ipmi_si.c |
| 3 | * |
| 4 | * The interface to the IPMI driver for the system interfaces (KCS, SMIC, |
| 5 | * BT). |
| 6 | * |
| 7 | * Author: MontaVista Software, Inc. |
| 8 | * Corey Minyard <minyard@mvista.com> |
| 9 | * source@mvista.com |
| 10 | * |
| 11 | * Copyright 2002 MontaVista Software Inc. |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 12 | * Copyright 2006 IBM Corp., Christian Krafft <krafft@de.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify it |
| 15 | * under the terms of the GNU General Public License as published by the |
| 16 | * Free Software Foundation; either version 2 of the License, or (at your |
| 17 | * option) any later version. |
| 18 | * |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 21 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 22 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 23 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 25 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 26 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 27 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 28 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 29 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | * |
| 31 | * You should have received a copy of the GNU General Public License along |
| 32 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 33 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * This file holds the "policy" for the interface to the SMI state |
| 38 | * machine. It does the configuration, handles timers and interrupts, |
| 39 | * and drives the real SMI state machine. |
| 40 | */ |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/module.h> |
| 43 | #include <linux/moduleparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/sched.h> |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 45 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <linux/timer.h> |
| 47 | #include <linux/errno.h> |
| 48 | #include <linux/spinlock.h> |
| 49 | #include <linux/slab.h> |
| 50 | #include <linux/delay.h> |
| 51 | #include <linux/list.h> |
| 52 | #include <linux/pci.h> |
| 53 | #include <linux/ioport.h> |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 54 | #include <linux/notifier.h> |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 55 | #include <linux/mutex.h> |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 56 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #include <linux/interrupt.h> |
| 59 | #include <linux/rcupdate.h> |
Zhao Yakui | 16f4232 | 2010-12-08 10:10:16 +0800 | [diff] [blame] | 60 | #include <linux/ipmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <linux/ipmi_smi.h> |
| 62 | #include <asm/io.h> |
| 63 | #include "ipmi_si_sm.h" |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 64 | #include <linux/dmi.h> |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 65 | #include <linux/string.h> |
| 66 | #include <linux/ctype.h> |
Stephen Rothwell | 11c675c | 2008-05-23 16:22:42 +1000 | [diff] [blame] | 67 | #include <linux/of_device.h> |
| 68 | #include <linux/of_platform.h> |
Rob Herring | 672d8ea | 2010-11-16 14:33:51 -0600 | [diff] [blame] | 69 | #include <linux/of_address.h> |
| 70 | #include <linux/of_irq.h> |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 71 | |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 72 | #ifdef CONFIG_PARISC |
| 73 | #include <asm/hardware.h> /* for register_parisc_driver() stuff */ |
| 74 | #include <asm/parisc-device.h> |
| 75 | #endif |
| 76 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 77 | #define PFX "ipmi_si: " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | /* Measure times between events in the driver. */ |
| 80 | #undef DEBUG_TIMING |
| 81 | |
| 82 | /* Call every 10 ms. */ |
| 83 | #define SI_TIMEOUT_TIME_USEC 10000 |
| 84 | #define SI_USEC_PER_JIFFY (1000000/HZ) |
| 85 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) |
| 86 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 87 | short timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | enum si_intf_state { |
| 90 | SI_NORMAL, |
| 91 | SI_GETTING_FLAGS, |
| 92 | SI_GETTING_EVENTS, |
| 93 | SI_CLEARING_FLAGS, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | SI_GETTING_MESSAGES, |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 95 | SI_CHECKING_ENABLES, |
| 96 | SI_SETTING_ENABLES |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | /* FIXME - add watchdog stuff. */ |
| 98 | }; |
| 99 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 100 | /* Some BT-specific defines we need here. */ |
| 101 | #define IPMI_BT_INTMASK_REG 2 |
| 102 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 |
| 103 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | enum si_type { |
| 106 | SI_KCS, SI_SMIC, SI_BT |
| 107 | }; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 108 | static char *si_to_str[] = { "kcs", "smic", "bt" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 110 | #define DEVICE_NAME "ipmi_si" |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 111 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 112 | static struct platform_driver ipmi_driver; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 113 | |
| 114 | /* |
| 115 | * Indexes into stats[] in smi_info below. |
| 116 | */ |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 117 | enum si_stat_indexes { |
| 118 | /* |
| 119 | * Number of times the driver requested a timer while an operation |
| 120 | * was in progress. |
| 121 | */ |
| 122 | SI_STAT_short_timeouts = 0, |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 123 | |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 124 | /* |
| 125 | * Number of times the driver requested a timer while nothing was in |
| 126 | * progress. |
| 127 | */ |
| 128 | SI_STAT_long_timeouts, |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 129 | |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 130 | /* Number of times the interface was idle while being polled. */ |
| 131 | SI_STAT_idles, |
| 132 | |
| 133 | /* Number of interrupts the driver handled. */ |
| 134 | SI_STAT_interrupts, |
| 135 | |
| 136 | /* Number of time the driver got an ATTN from the hardware. */ |
| 137 | SI_STAT_attentions, |
| 138 | |
| 139 | /* Number of times the driver requested flags from the hardware. */ |
| 140 | SI_STAT_flag_fetches, |
| 141 | |
| 142 | /* Number of times the hardware didn't follow the state machine. */ |
| 143 | SI_STAT_hosed_count, |
| 144 | |
| 145 | /* Number of completed messages. */ |
| 146 | SI_STAT_complete_transactions, |
| 147 | |
| 148 | /* Number of IPMI events received from the hardware. */ |
| 149 | SI_STAT_events, |
| 150 | |
| 151 | /* Number of watchdog pretimeouts. */ |
| 152 | SI_STAT_watchdog_pretimeouts, |
| 153 | |
Adam Buchbinder | b3834be | 2012-09-19 21:48:02 -0400 | [diff] [blame] | 154 | /* Number of asynchronous messages received. */ |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 155 | SI_STAT_incoming_messages, |
| 156 | |
| 157 | |
| 158 | /* This *must* remain last, add new values above this. */ |
| 159 | SI_NUM_STATS |
| 160 | }; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 161 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 162 | struct smi_info { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 163 | int intf_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | ipmi_smi_t intf; |
| 165 | struct si_sm_data *si_sm; |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 166 | const struct si_sm_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | enum si_type si_type; |
| 168 | spinlock_t si_lock; |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 169 | struct ipmi_smi_msg *waiting_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | struct ipmi_smi_msg *curr_msg; |
| 171 | enum si_intf_state si_state; |
| 172 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 173 | /* |
| 174 | * Used to handle the various types of I/O that can occur with |
| 175 | * IPMI |
| 176 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | struct si_sm_io io; |
| 178 | int (*io_setup)(struct smi_info *info); |
| 179 | void (*io_cleanup)(struct smi_info *info); |
| 180 | int (*irq_setup)(struct smi_info *info); |
| 181 | void (*irq_cleanup)(struct smi_info *info); |
| 182 | unsigned int io_size; |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 183 | enum ipmi_addr_src addr_source; /* ACPI, PCI, SMBIOS, hardcode, etc. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 184 | void (*addr_source_cleanup)(struct smi_info *info); |
| 185 | void *addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 187 | /* |
| 188 | * Per-OEM handler, called from handle_flags(). Returns 1 |
| 189 | * when handle_flags() needs to be re-run or 0 indicating it |
| 190 | * set si_state itself. |
| 191 | */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 192 | int (*oem_data_avail_handler)(struct smi_info *smi_info); |
| 193 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 194 | /* |
| 195 | * Flags from the last GET_MSG_FLAGS command, used when an ATTN |
| 196 | * is set to hold the flags until we are done handling everything |
| 197 | * from the flags. |
| 198 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | #define RECEIVE_MSG_AVAIL 0x01 |
| 200 | #define EVENT_MSG_BUFFER_FULL 0x02 |
| 201 | #define WDT_PRE_TIMEOUT_INT 0x08 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 202 | #define OEM0_DATA_AVAIL 0x20 |
| 203 | #define OEM1_DATA_AVAIL 0x40 |
| 204 | #define OEM2_DATA_AVAIL 0x80 |
| 205 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 206 | OEM1_DATA_AVAIL | \ |
| 207 | OEM2_DATA_AVAIL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | unsigned char msg_flags; |
| 209 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 210 | /* Does the BMC have an event buffer? */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 211 | bool has_event_buffer; |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 212 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 213 | /* |
| 214 | * If set to true, this will request events the next time the |
| 215 | * state machine is idle. |
| 216 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | atomic_t req_events; |
| 218 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 219 | /* |
| 220 | * If true, run the state machine to completion on every send |
| 221 | * call. Generally used after a panic to make sure stuff goes |
| 222 | * out. |
| 223 | */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 224 | bool run_to_completion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
| 226 | /* The I/O port of an SI interface. */ |
| 227 | int port; |
| 228 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 229 | /* |
| 230 | * The space between start addresses of the two ports. For |
| 231 | * instance, if the first port is 0xca2 and the spacing is 4, then |
| 232 | * the second port is 0xca6. |
| 233 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | unsigned int spacing; |
| 235 | |
| 236 | /* zero if no irq; */ |
| 237 | int irq; |
| 238 | |
| 239 | /* The timer for this si. */ |
| 240 | struct timer_list si_timer; |
| 241 | |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 242 | /* This flag is set, if the timer is running (timer_pending() isn't enough) */ |
| 243 | bool timer_running; |
| 244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | /* The time (in jiffies) the last timeout occurred at. */ |
| 246 | unsigned long last_timeout_jiffies; |
| 247 | |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 248 | /* Are we waiting for the events, pretimeouts, received msgs? */ |
| 249 | atomic_t need_watch; |
| 250 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 251 | /* |
| 252 | * The driver will disable interrupts when it gets into a |
| 253 | * situation where it cannot handle messages due to lack of |
| 254 | * memory. Once that situation clears up, it will re-enable |
| 255 | * interrupts. |
| 256 | */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 257 | bool interrupt_disabled; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 259 | /* |
| 260 | * Does the BMC support events? |
| 261 | */ |
| 262 | bool supports_event_msg_buff; |
| 263 | |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 264 | /* |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 265 | * Can we clear the global enables receive irq bit? |
| 266 | */ |
| 267 | bool cannot_clear_recv_irq_bit; |
| 268 | |
| 269 | /* |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 270 | * Did we get an attention that we did not handle? |
| 271 | */ |
| 272 | bool got_attn; |
| 273 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 274 | /* From the get device id response... */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 275 | struct ipmi_device_id device_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 277 | /* Driver model stuff. */ |
| 278 | struct device *dev; |
| 279 | struct platform_device *pdev; |
| 280 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 281 | /* |
| 282 | * True if we allocated the device, false if it came from |
| 283 | * someplace else (like PCI). |
| 284 | */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 285 | bool dev_registered; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | /* Slave address, could be reported from DMI. */ |
| 288 | unsigned char slave_addr; |
| 289 | |
| 290 | /* Counters and things for the proc filesystem. */ |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 291 | atomic_t stats[SI_NUM_STATS]; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 292 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 293 | struct task_struct *thread; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 294 | |
| 295 | struct list_head link; |
Zhao Yakui | 16f4232 | 2010-12-08 10:10:16 +0800 | [diff] [blame] | 296 | union ipmi_smi_info_union addr_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | }; |
| 298 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 299 | #define smi_inc_stat(smi, stat) \ |
| 300 | atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) |
| 301 | #define smi_get_stat(smi, stat) \ |
| 302 | ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) |
| 303 | |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 304 | #define SI_MAX_PARMS 4 |
| 305 | |
| 306 | static int force_kipmid[SI_MAX_PARMS]; |
| 307 | static int num_force_kipmid; |
Matthew Garrett | 5648028 | 2010-06-29 15:05:29 -0700 | [diff] [blame] | 308 | #ifdef CONFIG_PCI |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 309 | static bool pci_registered; |
Matthew Garrett | 5648028 | 2010-06-29 15:05:29 -0700 | [diff] [blame] | 310 | #endif |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 311 | #ifdef CONFIG_PARISC |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 312 | static bool parisc_registered; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 313 | #endif |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 314 | |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 315 | static unsigned int kipmid_max_busy_us[SI_MAX_PARMS]; |
| 316 | static int num_max_busy_us; |
| 317 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 318 | static bool unload_when_empty = true; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 319 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 320 | static int add_smi(struct smi_info *smi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 321 | static int try_smi_init(struct smi_info *smi); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 322 | static void cleanup_one_si(struct smi_info *to_clean); |
Corey Minyard | d247852 | 2011-02-10 16:08:38 -0600 | [diff] [blame] | 323 | static void cleanup_ipmi_si(void); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 324 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 325 | #ifdef DEBUG_TIMING |
| 326 | void debug_timestamp(char *msg) |
| 327 | { |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 328 | struct timespec64 t; |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 329 | |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 330 | getnstimeofday64(&t); |
| 331 | pr_debug("**%s: %lld.%9.9ld\n", msg, (long long) t.tv_sec, t.tv_nsec); |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 332 | } |
| 333 | #else |
| 334 | #define debug_timestamp(x) |
| 335 | #endif |
| 336 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 337 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 338 | static int register_xaction_notifier(struct notifier_block *nb) |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 339 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 340 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 341 | } |
| 342 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | static void deliver_recv_msg(struct smi_info *smi_info, |
| 344 | struct ipmi_smi_msg *msg) |
| 345 | { |
Corey Minyard | 7adf579 | 2012-03-28 14:42:49 -0700 | [diff] [blame] | 346 | /* Deliver the message to the upper layer. */ |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 347 | if (smi_info->intf) |
| 348 | ipmi_smi_msg_received(smi_info->intf, msg); |
| 349 | else |
| 350 | ipmi_free_smi_msg(msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 353 | static void return_hosed_msg(struct smi_info *smi_info, int cCode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | { |
| 355 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 356 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 357 | if (cCode < 0 || cCode > IPMI_ERR_UNSPECIFIED) |
| 358 | cCode = IPMI_ERR_UNSPECIFIED; |
| 359 | /* else use it as is */ |
| 360 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 361 | /* Make it a response */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | msg->rsp[0] = msg->data[0] | 4; |
| 363 | msg->rsp[1] = msg->data[1]; |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 364 | msg->rsp[2] = cCode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | msg->rsp_size = 3; |
| 366 | |
| 367 | smi_info->curr_msg = NULL; |
| 368 | deliver_recv_msg(smi_info, msg); |
| 369 | } |
| 370 | |
| 371 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) |
| 372 | { |
| 373 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 375 | if (!smi_info->waiting_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | smi_info->curr_msg = NULL; |
| 377 | rv = SI_SM_IDLE; |
| 378 | } else { |
| 379 | int err; |
| 380 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 381 | smi_info->curr_msg = smi_info->waiting_msg; |
| 382 | smi_info->waiting_msg = NULL; |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 383 | debug_timestamp("Start2"); |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 384 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
| 385 | 0, smi_info); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 386 | if (err & NOTIFY_STOP_MASK) { |
| 387 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 388 | goto out; |
| 389 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | err = smi_info->handlers->start_transaction( |
| 391 | smi_info->si_sm, |
| 392 | smi_info->curr_msg->data, |
| 393 | smi_info->curr_msg->data_size); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 394 | if (err) |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 395 | return_hosed_msg(smi_info, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | |
| 397 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 398 | } |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 399 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | return rv; |
| 401 | } |
| 402 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 403 | static void start_check_enables(struct smi_info *smi_info) |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 404 | { |
| 405 | unsigned char msg[2]; |
| 406 | |
| 407 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 408 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 409 | |
| 410 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 411 | smi_info->si_state = SI_CHECKING_ENABLES; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 412 | } |
| 413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | static void start_clear_flags(struct smi_info *smi_info) |
| 415 | { |
| 416 | unsigned char msg[3]; |
| 417 | |
| 418 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ |
| 419 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 420 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; |
| 421 | msg[2] = WDT_PRE_TIMEOUT_INT; |
| 422 | |
| 423 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 424 | smi_info->si_state = SI_CLEARING_FLAGS; |
| 425 | } |
| 426 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 427 | static void start_getting_msg_queue(struct smi_info *smi_info) |
| 428 | { |
| 429 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 430 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; |
| 431 | smi_info->curr_msg->data_size = 2; |
| 432 | |
| 433 | smi_info->handlers->start_transaction( |
| 434 | smi_info->si_sm, |
| 435 | smi_info->curr_msg->data, |
| 436 | smi_info->curr_msg->data_size); |
| 437 | smi_info->si_state = SI_GETTING_MESSAGES; |
| 438 | } |
| 439 | |
| 440 | static void start_getting_events(struct smi_info *smi_info) |
| 441 | { |
| 442 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 443 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; |
| 444 | smi_info->curr_msg->data_size = 2; |
| 445 | |
| 446 | smi_info->handlers->start_transaction( |
| 447 | smi_info->si_sm, |
| 448 | smi_info->curr_msg->data, |
| 449 | smi_info->curr_msg->data_size); |
| 450 | smi_info->si_state = SI_GETTING_EVENTS; |
| 451 | } |
| 452 | |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 453 | static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val) |
| 454 | { |
| 455 | smi_info->last_timeout_jiffies = jiffies; |
| 456 | mod_timer(&smi_info->si_timer, new_val); |
| 457 | smi_info->timer_running = true; |
| 458 | } |
| 459 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 460 | /* |
| 461 | * When we have a situtaion where we run out of memory and cannot |
| 462 | * allocate messages, we just leave them in the BMC and run the system |
| 463 | * polled until we can allocate some memory. Once we have some |
| 464 | * memory, we will re-enable the interrupt. |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 465 | * |
| 466 | * Note that we cannot just use disable_irq(), since the interrupt may |
| 467 | * be shared. |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 468 | */ |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 469 | static inline bool disable_si_irq(struct smi_info *smi_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 471 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 472 | smi_info->interrupt_disabled = true; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 473 | start_check_enables(smi_info); |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 474 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | } |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 476 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | } |
| 478 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 479 | static inline bool enable_si_irq(struct smi_info *smi_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | { |
| 481 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 482 | smi_info->interrupt_disabled = false; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 483 | start_check_enables(smi_info); |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 484 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | } |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 486 | return false; |
| 487 | } |
| 488 | |
| 489 | /* |
| 490 | * Allocate a message. If unable to allocate, start the interrupt |
| 491 | * disable process and return NULL. If able to allocate but |
| 492 | * interrupts are disabled, free the message and return NULL after |
| 493 | * starting the interrupt enable process. |
| 494 | */ |
| 495 | static struct ipmi_smi_msg *alloc_msg_handle_irq(struct smi_info *smi_info) |
| 496 | { |
| 497 | struct ipmi_smi_msg *msg; |
| 498 | |
| 499 | msg = ipmi_alloc_smi_msg(); |
| 500 | if (!msg) { |
| 501 | if (!disable_si_irq(smi_info)) |
| 502 | smi_info->si_state = SI_NORMAL; |
| 503 | } else if (enable_si_irq(smi_info)) { |
| 504 | ipmi_free_smi_msg(msg); |
| 505 | msg = NULL; |
| 506 | } |
| 507 | return msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | static void handle_flags(struct smi_info *smi_info) |
| 511 | { |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 512 | retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
| 514 | /* Watchdog pre-timeout */ |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 515 | smi_inc_stat(smi_info, watchdog_pretimeouts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | |
| 517 | start_clear_flags(smi_info); |
| 518 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 519 | if (smi_info->intf) |
| 520 | ipmi_smi_watchdog_pretimeout(smi_info->intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { |
| 522 | /* Messages available. */ |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 523 | smi_info->curr_msg = alloc_msg_handle_irq(smi_info); |
| 524 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 527 | start_getting_msg_queue(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { |
| 529 | /* Events available. */ |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 530 | smi_info->curr_msg = alloc_msg_handle_irq(smi_info); |
| 531 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 534 | start_getting_events(smi_info); |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 535 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 536 | smi_info->oem_data_avail_handler) { |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 537 | if (smi_info->oem_data_avail_handler(smi_info)) |
| 538 | goto retry; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 539 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | smi_info->si_state = SI_NORMAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 543 | /* |
| 544 | * Global enables we care about. |
| 545 | */ |
| 546 | #define GLOBAL_ENABLES_MASK (IPMI_BMC_EVT_MSG_BUFF | IPMI_BMC_RCV_MSG_INTR | \ |
| 547 | IPMI_BMC_EVT_MSG_INTR) |
| 548 | |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 549 | static u8 current_global_enables(struct smi_info *smi_info, u8 base, |
| 550 | bool *irq_on) |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 551 | { |
| 552 | u8 enables = 0; |
| 553 | |
| 554 | if (smi_info->supports_event_msg_buff) |
| 555 | enables |= IPMI_BMC_EVT_MSG_BUFF; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 556 | |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 557 | if ((smi_info->irq && !smi_info->interrupt_disabled) || |
| 558 | smi_info->cannot_clear_recv_irq_bit) |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 559 | enables |= IPMI_BMC_RCV_MSG_INTR; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 560 | |
| 561 | if (smi_info->supports_event_msg_buff && |
| 562 | smi_info->irq && !smi_info->interrupt_disabled) |
| 563 | |
| 564 | enables |= IPMI_BMC_EVT_MSG_INTR; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 565 | |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 566 | *irq_on = enables & (IPMI_BMC_EVT_MSG_INTR | IPMI_BMC_RCV_MSG_INTR); |
| 567 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 568 | return enables; |
| 569 | } |
| 570 | |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 571 | static void check_bt_irq(struct smi_info *smi_info, bool irq_on) |
| 572 | { |
| 573 | u8 irqstate = smi_info->io.inputb(&smi_info->io, IPMI_BT_INTMASK_REG); |
| 574 | |
| 575 | irqstate &= IPMI_BT_INTMASK_ENABLE_IRQ_BIT; |
| 576 | |
| 577 | if ((bool)irqstate == irq_on) |
| 578 | return; |
| 579 | |
| 580 | if (irq_on) |
| 581 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, |
| 582 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
| 583 | else |
| 584 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, 0); |
| 585 | } |
| 586 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | static void handle_transaction_done(struct smi_info *smi_info) |
| 588 | { |
| 589 | struct ipmi_smi_msg *msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 591 | debug_timestamp("Done"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | switch (smi_info->si_state) { |
| 593 | case SI_NORMAL: |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 594 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | break; |
| 596 | |
| 597 | smi_info->curr_msg->rsp_size |
| 598 | = smi_info->handlers->get_result( |
| 599 | smi_info->si_sm, |
| 600 | smi_info->curr_msg->rsp, |
| 601 | IPMI_MAX_MSG_LENGTH); |
| 602 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 603 | /* |
| 604 | * Do this here becase deliver_recv_msg() releases the |
| 605 | * lock, and a new message can be put in during the |
| 606 | * time the lock is released. |
| 607 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | msg = smi_info->curr_msg; |
| 609 | smi_info->curr_msg = NULL; |
| 610 | deliver_recv_msg(smi_info, msg); |
| 611 | break; |
| 612 | |
| 613 | case SI_GETTING_FLAGS: |
| 614 | { |
| 615 | unsigned char msg[4]; |
| 616 | unsigned int len; |
| 617 | |
| 618 | /* We got the flags from the SMI, now handle them. */ |
| 619 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 620 | if (msg[2] != 0) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 621 | /* Error fetching flags, just give up for now. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | smi_info->si_state = SI_NORMAL; |
| 623 | } else if (len < 4) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 624 | /* |
| 625 | * Hmm, no flags. That's technically illegal, but |
| 626 | * don't use uninitialized data. |
| 627 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | smi_info->si_state = SI_NORMAL; |
| 629 | } else { |
| 630 | smi_info->msg_flags = msg[3]; |
| 631 | handle_flags(smi_info); |
| 632 | } |
| 633 | break; |
| 634 | } |
| 635 | |
| 636 | case SI_CLEARING_FLAGS: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | { |
| 638 | unsigned char msg[3]; |
| 639 | |
| 640 | /* We cleared the flags. */ |
| 641 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); |
| 642 | if (msg[2] != 0) { |
| 643 | /* Error clearing flags */ |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 644 | dev_warn(smi_info->dev, |
| 645 | "Error clearing flags: %2.2x\n", msg[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | } |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 647 | smi_info->si_state = SI_NORMAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | break; |
| 649 | } |
| 650 | |
| 651 | case SI_GETTING_EVENTS: |
| 652 | { |
| 653 | smi_info->curr_msg->rsp_size |
| 654 | = smi_info->handlers->get_result( |
| 655 | smi_info->si_sm, |
| 656 | smi_info->curr_msg->rsp, |
| 657 | IPMI_MAX_MSG_LENGTH); |
| 658 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 659 | /* |
| 660 | * Do this here becase deliver_recv_msg() releases the |
| 661 | * lock, and a new message can be put in during the |
| 662 | * time the lock is released. |
| 663 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | msg = smi_info->curr_msg; |
| 665 | smi_info->curr_msg = NULL; |
| 666 | if (msg->rsp[2] != 0) { |
| 667 | /* Error getting event, probably done. */ |
| 668 | msg->done(msg); |
| 669 | |
| 670 | /* Take off the event flag. */ |
| 671 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; |
| 672 | handle_flags(smi_info); |
| 673 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 674 | smi_inc_stat(smi_info, events); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 676 | /* |
| 677 | * Do this before we deliver the message |
| 678 | * because delivering the message releases the |
| 679 | * lock and something else can mess with the |
| 680 | * state. |
| 681 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | handle_flags(smi_info); |
| 683 | |
| 684 | deliver_recv_msg(smi_info, msg); |
| 685 | } |
| 686 | break; |
| 687 | } |
| 688 | |
| 689 | case SI_GETTING_MESSAGES: |
| 690 | { |
| 691 | smi_info->curr_msg->rsp_size |
| 692 | = smi_info->handlers->get_result( |
| 693 | smi_info->si_sm, |
| 694 | smi_info->curr_msg->rsp, |
| 695 | IPMI_MAX_MSG_LENGTH); |
| 696 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 697 | /* |
| 698 | * Do this here becase deliver_recv_msg() releases the |
| 699 | * lock, and a new message can be put in during the |
| 700 | * time the lock is released. |
| 701 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | msg = smi_info->curr_msg; |
| 703 | smi_info->curr_msg = NULL; |
| 704 | if (msg->rsp[2] != 0) { |
| 705 | /* Error getting event, probably done. */ |
| 706 | msg->done(msg); |
| 707 | |
| 708 | /* Take off the msg flag. */ |
| 709 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; |
| 710 | handle_flags(smi_info); |
| 711 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 712 | smi_inc_stat(smi_info, incoming_messages); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 714 | /* |
| 715 | * Do this before we deliver the message |
| 716 | * because delivering the message releases the |
| 717 | * lock and something else can mess with the |
| 718 | * state. |
| 719 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | handle_flags(smi_info); |
| 721 | |
| 722 | deliver_recv_msg(smi_info, msg); |
| 723 | } |
| 724 | break; |
| 725 | } |
| 726 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 727 | case SI_CHECKING_ENABLES: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | { |
| 729 | unsigned char msg[4]; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 730 | u8 enables; |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 731 | bool irq_on; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | |
| 733 | /* We got the flags from the SMI, now handle them. */ |
| 734 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 735 | if (msg[2] != 0) { |
Corey Minyard | 0849bfe | 2013-05-16 14:04:26 -0500 | [diff] [blame] | 736 | dev_warn(smi_info->dev, |
| 737 | "Couldn't get irq info: %x.\n", msg[2]); |
| 738 | dev_warn(smi_info->dev, |
| 739 | "Maybe ok, but ipmi might run very slowly.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | smi_info->si_state = SI_NORMAL; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 741 | break; |
| 742 | } |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 743 | enables = current_global_enables(smi_info, 0, &irq_on); |
| 744 | if (smi_info->si_type == SI_BT) |
| 745 | /* BT has its own interrupt enable bit. */ |
| 746 | check_bt_irq(smi_info, irq_on); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 747 | if (enables != (msg[3] & GLOBAL_ENABLES_MASK)) { |
| 748 | /* Enables are not correct, fix them. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 750 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 751 | msg[2] = enables | (msg[3] & ~GLOBAL_ENABLES_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | smi_info->handlers->start_transaction( |
| 753 | smi_info->si_sm, msg, 3); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 754 | smi_info->si_state = SI_SETTING_ENABLES; |
| 755 | } else if (smi_info->supports_event_msg_buff) { |
| 756 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
| 757 | if (!smi_info->curr_msg) { |
| 758 | smi_info->si_state = SI_NORMAL; |
| 759 | break; |
| 760 | } |
| 761 | start_getting_msg_queue(smi_info); |
| 762 | } else { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 763 | smi_info->si_state = SI_NORMAL; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 764 | } |
| 765 | break; |
| 766 | } |
| 767 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 768 | case SI_SETTING_ENABLES: |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 769 | { |
| 770 | unsigned char msg[4]; |
| 771 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 772 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 773 | if (msg[2] != 0) |
| 774 | dev_warn(smi_info->dev, |
| 775 | "Could not set the global enables: 0x%x.\n", |
| 776 | msg[2]); |
| 777 | |
| 778 | if (smi_info->supports_event_msg_buff) { |
| 779 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
| 780 | if (!smi_info->curr_msg) { |
| 781 | smi_info->si_state = SI_NORMAL; |
| 782 | break; |
| 783 | } |
| 784 | start_getting_msg_queue(smi_info); |
| 785 | } else { |
| 786 | smi_info->si_state = SI_NORMAL; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 787 | } |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 788 | break; |
| 789 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } |
| 791 | } |
| 792 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 793 | /* |
| 794 | * Called on timeouts and events. Timeouts should pass the elapsed |
| 795 | * time, interrupts should pass in zero. Must be called with |
| 796 | * si_lock held and interrupts disabled. |
| 797 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, |
| 799 | int time) |
| 800 | { |
| 801 | enum si_sm_result si_sm_result; |
| 802 | |
| 803 | restart: |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 804 | /* |
| 805 | * There used to be a loop here that waited a little while |
| 806 | * (around 25us) before giving up. That turned out to be |
| 807 | * pointless, the minimum delays I was seeing were in the 300us |
| 808 | * range, which is far too long to wait in an interrupt. So |
| 809 | * we just run until the state machine tells us something |
| 810 | * happened or it needs a delay. |
| 811 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); |
| 813 | time = 0; |
| 814 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 817 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 818 | smi_inc_stat(smi_info, complete_transactions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
| 820 | handle_transaction_done(smi_info); |
| 821 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 822 | } else if (si_sm_result == SI_SM_HOSED) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 823 | smi_inc_stat(smi_info, hosed_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 825 | /* |
| 826 | * Do the before return_hosed_msg, because that |
| 827 | * releases the lock. |
| 828 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | smi_info->si_state = SI_NORMAL; |
| 830 | if (smi_info->curr_msg != NULL) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 831 | /* |
| 832 | * If we were handling a user message, format |
| 833 | * a response to send to the upper layer to |
| 834 | * tell it about the error. |
| 835 | */ |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 836 | return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | } |
| 838 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 839 | } |
| 840 | |
Corey Minyard | 4ea1842 | 2008-04-29 01:01:01 -0700 | [diff] [blame] | 841 | /* |
| 842 | * We prefer handling attn over new messages. But don't do |
| 843 | * this if there is not yet an upper layer to handle anything. |
| 844 | */ |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 845 | if (likely(smi_info->intf) && |
| 846 | (si_sm_result == SI_SM_ATTN || smi_info->got_attn)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | unsigned char msg[2]; |
| 848 | |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 849 | if (smi_info->si_state != SI_NORMAL) { |
| 850 | /* |
| 851 | * We got an ATTN, but we are doing something else. |
| 852 | * Handle the ATTN later. |
| 853 | */ |
| 854 | smi_info->got_attn = true; |
| 855 | } else { |
| 856 | smi_info->got_attn = false; |
| 857 | smi_inc_stat(smi_info, attentions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 859 | /* |
| 860 | * Got a attn, send down a get message flags to see |
| 861 | * what's causing it. It would be better to handle |
| 862 | * this in the upper layer, but due to the way |
| 863 | * interrupts work with the SMI, that's not really |
| 864 | * possible. |
| 865 | */ |
| 866 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 867 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 869 | smi_info->handlers->start_transaction( |
| 870 | smi_info->si_sm, msg, 2); |
| 871 | smi_info->si_state = SI_GETTING_FLAGS; |
| 872 | goto restart; |
| 873 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | } |
| 875 | |
| 876 | /* If we are currently idle, try to start the next message. */ |
| 877 | if (si_sm_result == SI_SM_IDLE) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 878 | smi_inc_stat(smi_info, idles); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | |
| 880 | si_sm_result = start_next_msg(smi_info); |
| 881 | if (si_sm_result != SI_SM_IDLE) |
| 882 | goto restart; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 883 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | |
| 885 | if ((si_sm_result == SI_SM_IDLE) |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 886 | && (atomic_read(&smi_info->req_events))) { |
| 887 | /* |
| 888 | * We are idle and the upper layer requested that I fetch |
| 889 | * events, so do so. |
| 890 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | atomic_set(&smi_info->req_events, 0); |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 892 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 893 | /* |
| 894 | * Take this opportunity to check the interrupt and |
| 895 | * message enable state for the BMC. The BMC can be |
| 896 | * asynchronously reset, and may thus get interrupts |
| 897 | * disable and messages disabled. |
| 898 | */ |
| 899 | if (smi_info->supports_event_msg_buff || smi_info->irq) { |
| 900 | start_check_enables(smi_info); |
| 901 | } else { |
| 902 | smi_info->curr_msg = alloc_msg_handle_irq(smi_info); |
| 903 | if (!smi_info->curr_msg) |
| 904 | goto out; |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 905 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 906 | start_getting_events(smi_info); |
| 907 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | goto restart; |
| 909 | } |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 910 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | return si_sm_result; |
| 912 | } |
| 913 | |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 914 | static void check_start_timer_thread(struct smi_info *smi_info) |
| 915 | { |
| 916 | if (smi_info->si_state == SI_NORMAL && smi_info->curr_msg == NULL) { |
| 917 | smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES); |
| 918 | |
| 919 | if (smi_info->thread) |
| 920 | wake_up_process(smi_info->thread); |
| 921 | |
| 922 | start_next_msg(smi_info); |
| 923 | smi_event_handler(smi_info, 0); |
| 924 | } |
| 925 | } |
| 926 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | static void sender(void *send_info, |
Corey Minyard | 99ab32f | 2014-11-07 07:57:31 -0600 | [diff] [blame] | 928 | struct ipmi_smi_msg *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | { |
| 930 | struct smi_info *smi_info = send_info; |
| 931 | enum si_sm_result result; |
| 932 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 934 | debug_timestamp("Enqueue"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | |
| 936 | if (smi_info->run_to_completion) { |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 937 | /* |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 938 | * If we are running to completion, start it and run |
| 939 | * transactions until everything is clear. |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 940 | */ |
Hidehiro Kawai | 9f81270 | 2015-04-23 11:16:44 +0900 | [diff] [blame] | 941 | smi_info->waiting_msg = msg; |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 942 | |
| 943 | /* |
| 944 | * Run to completion means we are single-threaded, no |
| 945 | * need for locks. |
| 946 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | result = smi_event_handler(smi_info, 0); |
| 949 | while (result != SI_SM_IDLE) { |
| 950 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 951 | result = smi_event_handler(smi_info, |
| 952 | SI_SHORT_TIMEOUT_USEC); |
| 953 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 957 | spin_lock_irqsave(&smi_info->si_lock, flags); |
Corey Minyard | 1d86e29 | 2015-02-19 08:25:49 -0600 | [diff] [blame] | 958 | /* |
| 959 | * The following two lines don't need to be under the lock for |
| 960 | * the lock's sake, but they do need SMP memory barriers to |
| 961 | * avoid getting things out of order. We are already claiming |
| 962 | * the lock, anyway, so just do it under the lock to avoid the |
| 963 | * ordering problem. |
| 964 | */ |
| 965 | BUG_ON(smi_info->waiting_msg); |
| 966 | smi_info->waiting_msg = msg; |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 967 | check_start_timer_thread(smi_info); |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 968 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | } |
| 970 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 971 | static void set_run_to_completion(void *send_info, bool i_run_to_completion) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | { |
| 973 | struct smi_info *smi_info = send_info; |
| 974 | enum si_sm_result result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
| 976 | smi_info->run_to_completion = i_run_to_completion; |
| 977 | if (i_run_to_completion) { |
| 978 | result = smi_event_handler(smi_info, 0); |
| 979 | while (result != SI_SM_IDLE) { |
| 980 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 981 | result = smi_event_handler(smi_info, |
| 982 | SI_SHORT_TIMEOUT_USEC); |
| 983 | } |
| 984 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
| 986 | |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 987 | /* |
| 988 | * Use -1 in the nsec value of the busy waiting timespec to tell that |
| 989 | * we are spinning in kipmid looking for something and not delaying |
| 990 | * between checks |
| 991 | */ |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 992 | static inline void ipmi_si_set_not_busy(struct timespec64 *ts) |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 993 | { |
| 994 | ts->tv_nsec = -1; |
| 995 | } |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 996 | static inline int ipmi_si_is_busy(struct timespec64 *ts) |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 997 | { |
| 998 | return ts->tv_nsec != -1; |
| 999 | } |
| 1000 | |
Arnd Bergmann | cc4cbe9 | 2014-10-06 14:17:52 -0500 | [diff] [blame] | 1001 | static inline int ipmi_thread_busy_wait(enum si_sm_result smi_result, |
| 1002 | const struct smi_info *smi_info, |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1003 | struct timespec64 *busy_until) |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1004 | { |
| 1005 | unsigned int max_busy_us = 0; |
| 1006 | |
| 1007 | if (smi_info->intf_num < num_max_busy_us) |
| 1008 | max_busy_us = kipmid_max_busy_us[smi_info->intf_num]; |
| 1009 | if (max_busy_us == 0 || smi_result != SI_SM_CALL_WITH_DELAY) |
| 1010 | ipmi_si_set_not_busy(busy_until); |
| 1011 | else if (!ipmi_si_is_busy(busy_until)) { |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1012 | getnstimeofday64(busy_until); |
| 1013 | timespec64_add_ns(busy_until, max_busy_us*NSEC_PER_USEC); |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1014 | } else { |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1015 | struct timespec64 now; |
| 1016 | |
| 1017 | getnstimeofday64(&now); |
| 1018 | if (unlikely(timespec64_compare(&now, busy_until) > 0)) { |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1019 | ipmi_si_set_not_busy(busy_until); |
| 1020 | return 0; |
| 1021 | } |
| 1022 | } |
| 1023 | return 1; |
| 1024 | } |
| 1025 | |
| 1026 | |
| 1027 | /* |
| 1028 | * A busy-waiting loop for speeding up IPMI operation. |
| 1029 | * |
| 1030 | * Lousy hardware makes this hard. This is only enabled for systems |
| 1031 | * that are not BT and do not have interrupts. It starts spinning |
| 1032 | * when an operation is complete or until max_busy tells it to stop |
| 1033 | * (if that is enabled). See the paragraph on kimid_max_busy_us in |
| 1034 | * Documentation/IPMI.txt for details. |
| 1035 | */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1036 | static int ipmi_thread(void *data) |
| 1037 | { |
| 1038 | struct smi_info *smi_info = data; |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 1039 | unsigned long flags; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1040 | enum si_sm_result smi_result; |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1041 | struct timespec64 busy_until; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1042 | |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1043 | ipmi_si_set_not_busy(&busy_until); |
Dongsheng Yang | 8698a74 | 2014-03-11 18:09:12 +0800 | [diff] [blame] | 1044 | set_user_nice(current, MAX_NICE); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 1045 | while (!kthread_should_stop()) { |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1046 | int busy_wait; |
| 1047 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1048 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1049 | smi_result = smi_event_handler(smi_info, 0); |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 1050 | |
| 1051 | /* |
| 1052 | * If the driver is doing something, there is a possible |
| 1053 | * race with the timer. If the timer handler see idle, |
| 1054 | * and the thread here sees something else, the timer |
| 1055 | * handler won't restart the timer even though it is |
| 1056 | * required. So start it here if necessary. |
| 1057 | */ |
| 1058 | if (smi_result != SI_SM_IDLE && !smi_info->timer_running) |
| 1059 | smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES); |
| 1060 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1061 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1062 | busy_wait = ipmi_thread_busy_wait(smi_result, smi_info, |
| 1063 | &busy_until); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1064 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) |
| 1065 | ; /* do nothing */ |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1066 | else if (smi_result == SI_SM_CALL_WITH_DELAY && busy_wait) |
akpm@osdl.org | 3397973 | 2006-06-27 02:54:04 -0700 | [diff] [blame] | 1067 | schedule(); |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 1068 | else if (smi_result == SI_SM_IDLE) { |
| 1069 | if (atomic_read(&smi_info->need_watch)) { |
| 1070 | schedule_timeout_interruptible(100); |
| 1071 | } else { |
| 1072 | /* Wait to be woken up when we are needed. */ |
| 1073 | __set_current_state(TASK_INTERRUPTIBLE); |
| 1074 | schedule(); |
| 1075 | } |
| 1076 | } else |
Martin Wilck | 8d1f66d | 2010-06-29 15:05:31 -0700 | [diff] [blame] | 1077 | schedule_timeout_interruptible(1); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1078 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1079 | return 0; |
| 1080 | } |
| 1081 | |
| 1082 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | static void poll(void *send_info) |
| 1084 | { |
| 1085 | struct smi_info *smi_info = send_info; |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1086 | unsigned long flags = 0; |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1087 | bool run_to_completion = smi_info->run_to_completion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | |
Corey Minyard | 15c62e1 | 2006-12-06 20:41:06 -0800 | [diff] [blame] | 1089 | /* |
| 1090 | * Make sure there is some delay in the poll loop so we can |
| 1091 | * drive time forward and timeout things. |
| 1092 | */ |
| 1093 | udelay(10); |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1094 | if (!run_to_completion) |
| 1095 | spin_lock_irqsave(&smi_info->si_lock, flags); |
Corey Minyard | 15c62e1 | 2006-12-06 20:41:06 -0800 | [diff] [blame] | 1096 | smi_event_handler(smi_info, 10); |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1097 | if (!run_to_completion) |
| 1098 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | } |
| 1100 | |
| 1101 | static void request_events(void *send_info) |
| 1102 | { |
| 1103 | struct smi_info *smi_info = send_info; |
| 1104 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 1105 | if (!smi_info->has_event_buffer) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1106 | return; |
| 1107 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | atomic_set(&smi_info->req_events, 1); |
| 1109 | } |
| 1110 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1111 | static void set_need_watch(void *send_info, bool enable) |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 1112 | { |
| 1113 | struct smi_info *smi_info = send_info; |
| 1114 | unsigned long flags; |
| 1115 | |
| 1116 | atomic_set(&smi_info->need_watch, enable); |
| 1117 | spin_lock_irqsave(&smi_info->si_lock, flags); |
| 1118 | check_start_timer_thread(smi_info); |
| 1119 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
| 1120 | } |
| 1121 | |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1122 | static int initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | static void smi_timeout(unsigned long data) |
| 1125 | { |
| 1126 | struct smi_info *smi_info = (struct smi_info *) data; |
| 1127 | enum si_sm_result smi_result; |
| 1128 | unsigned long flags; |
| 1129 | unsigned long jiffies_now; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 1130 | long time_diff; |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1131 | long timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 1134 | debug_timestamp("Timer"); |
| 1135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | jiffies_now = jiffies; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 1137 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | * SI_USEC_PER_JIFFY); |
| 1139 | smi_result = smi_event_handler(smi_info, time_diff); |
| 1140 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1141 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | /* Running with interrupts, only do long timeouts. */ |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1143 | timeout = jiffies + SI_TIMEOUT_JIFFIES; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1144 | smi_inc_stat(smi_info, long_timeouts); |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1145 | goto do_mod_timer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | } |
| 1147 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1148 | /* |
| 1149 | * If the state machine asks for a short delay, then shorten |
| 1150 | * the timer timeout. |
| 1151 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | if (smi_result == SI_SM_CALL_WITH_DELAY) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1153 | smi_inc_stat(smi_info, short_timeouts); |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1154 | timeout = jiffies + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1156 | smi_inc_stat(smi_info, long_timeouts); |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1157 | timeout = jiffies + SI_TIMEOUT_JIFFIES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | } |
| 1159 | |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1160 | do_mod_timer: |
| 1161 | if (smi_result != SI_SM_IDLE) |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 1162 | smi_mod_timer(smi_info, timeout); |
| 1163 | else |
| 1164 | smi_info->timer_running = false; |
| 1165 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | } |
| 1167 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1168 | static irqreturn_t si_irq_handler(int irq, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | { |
| 1170 | struct smi_info *smi_info = data; |
| 1171 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | |
| 1173 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 1174 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1175 | smi_inc_stat(smi_info, interrupts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 1177 | debug_timestamp("Interrupt"); |
| 1178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 1181 | return IRQ_HANDLED; |
| 1182 | } |
| 1183 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1184 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1185 | { |
| 1186 | struct smi_info *smi_info = data; |
| 1187 | /* We need to clear the IRQ flag for the BT interface. */ |
| 1188 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, |
| 1189 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT |
| 1190 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1191 | return si_irq_handler(irq, data); |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1192 | } |
| 1193 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1194 | static int smi_start_processing(void *send_info, |
| 1195 | ipmi_smi_t intf) |
| 1196 | { |
| 1197 | struct smi_info *new_smi = send_info; |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1198 | int enable = 0; |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1199 | |
| 1200 | new_smi->intf = intf; |
| 1201 | |
Corey Minyard | c45adc3 | 2007-10-18 03:07:08 -0700 | [diff] [blame] | 1202 | /* Try to claim any interrupts. */ |
| 1203 | if (new_smi->irq_setup) |
| 1204 | new_smi->irq_setup(new_smi); |
| 1205 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1206 | /* Set up the timer that drives the interface. */ |
| 1207 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 1208 | smi_mod_timer(new_smi, jiffies + SI_TIMEOUT_JIFFIES); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1209 | |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1210 | /* |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1211 | * Check if the user forcefully enabled the daemon. |
| 1212 | */ |
| 1213 | if (new_smi->intf_num < num_force_kipmid) |
| 1214 | enable = force_kipmid[new_smi->intf_num]; |
| 1215 | /* |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1216 | * The BT interface is efficient enough to not need a thread, |
| 1217 | * and there is no need for a thread if we have interrupts. |
| 1218 | */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1219 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1220 | enable = 1; |
| 1221 | |
| 1222 | if (enable) { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1223 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
| 1224 | "kipmi%d", new_smi->intf_num); |
| 1225 | if (IS_ERR(new_smi->thread)) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1226 | dev_notice(new_smi->dev, "Could not start" |
| 1227 | " kernel thread due to error %ld, only using" |
| 1228 | " timers to drive the interface\n", |
| 1229 | PTR_ERR(new_smi->thread)); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1230 | new_smi->thread = NULL; |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | return 0; |
| 1235 | } |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1236 | |
Zhao Yakui | 16f4232 | 2010-12-08 10:10:16 +0800 | [diff] [blame] | 1237 | static int get_smi_info(void *send_info, struct ipmi_smi_info *data) |
| 1238 | { |
| 1239 | struct smi_info *smi = send_info; |
| 1240 | |
| 1241 | data->addr_src = smi->addr_source; |
| 1242 | data->dev = smi->dev; |
| 1243 | data->addr_info = smi->addr_info; |
| 1244 | get_device(smi->dev); |
| 1245 | |
| 1246 | return 0; |
| 1247 | } |
| 1248 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1249 | static void set_maintenance_mode(void *send_info, bool enable) |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1250 | { |
| 1251 | struct smi_info *smi_info = send_info; |
| 1252 | |
| 1253 | if (!enable) |
| 1254 | atomic_set(&smi_info->req_events, 0); |
| 1255 | } |
| 1256 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1257 | static const struct ipmi_smi_handlers handlers = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | .owner = THIS_MODULE, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1259 | .start_processing = smi_start_processing, |
Zhao Yakui | 16f4232 | 2010-12-08 10:10:16 +0800 | [diff] [blame] | 1260 | .get_smi_info = get_smi_info, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | .sender = sender, |
| 1262 | .request_events = request_events, |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 1263 | .set_need_watch = set_need_watch, |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1264 | .set_maintenance_mode = set_maintenance_mode, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | .set_run_to_completion = set_run_to_completion, |
| 1266 | .poll = poll, |
| 1267 | }; |
| 1268 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1269 | /* |
| 1270 | * There can be 4 IO ports passed in (with or without IRQs), 4 addresses, |
| 1271 | * a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS. |
| 1272 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1274 | static LIST_HEAD(smi_infos); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1275 | static DEFINE_MUTEX(smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1276 | static int smi_num; /* Used to sequence the SMIs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | #define DEFAULT_REGSPACING 1 |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 1279 | #define DEFAULT_REGSIZE 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1281 | #ifdef CONFIG_ACPI |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1282 | static bool si_tryacpi = true; |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1283 | #endif |
| 1284 | #ifdef CONFIG_DMI |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1285 | static bool si_trydmi = true; |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1286 | #endif |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1287 | static bool si_tryplatform = true; |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1288 | #ifdef CONFIG_PCI |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1289 | static bool si_trypci = true; |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1290 | #endif |
Corey Minyard | 0dfe6e7 | 2014-04-14 09:46:53 -0500 | [diff] [blame] | 1291 | static bool si_trydefaults = IS_ENABLED(CONFIG_IPMI_SI_PROBE_DEFAULTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | static char *si_type[SI_MAX_PARMS]; |
| 1293 | #define MAX_SI_TYPE_STR 30 |
| 1294 | static char si_type_str[MAX_SI_TYPE_STR]; |
| 1295 | static unsigned long addrs[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1296 | static unsigned int num_addrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | static unsigned int ports[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1298 | static unsigned int num_ports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | static int irqs[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1300 | static unsigned int num_irqs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | static int regspacings[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1302 | static unsigned int num_regspacings; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | static int regsizes[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1304 | static unsigned int num_regsizes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | static int regshifts[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1306 | static unsigned int num_regshifts; |
Bela Lubkin | 2f95d51 | 2010-03-10 15:23:07 -0800 | [diff] [blame] | 1307 | static int slave_addrs[SI_MAX_PARMS]; /* Leaving 0 chooses the default value */ |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1308 | static unsigned int num_slave_addrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1310 | #define IPMI_IO_ADDR_SPACE 0 |
| 1311 | #define IPMI_MEM_ADDR_SPACE 1 |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1312 | static char *addr_space_to_str[] = { "i/o", "mem" }; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1313 | |
| 1314 | static int hotmod_handler(const char *val, struct kernel_param *kp); |
| 1315 | |
| 1316 | module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200); |
| 1317 | MODULE_PARM_DESC(hotmod, "Add and remove interfaces. See" |
| 1318 | " Documentation/IPMI.txt in the kernel sources for the" |
| 1319 | " gory details."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1321 | #ifdef CONFIG_ACPI |
| 1322 | module_param_named(tryacpi, si_tryacpi, bool, 0); |
| 1323 | MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the" |
| 1324 | " default scan of the interfaces identified via ACPI"); |
| 1325 | #endif |
| 1326 | #ifdef CONFIG_DMI |
| 1327 | module_param_named(trydmi, si_trydmi, bool, 0); |
| 1328 | MODULE_PARM_DESC(trydmi, "Setting this to zero will disable the" |
| 1329 | " default scan of the interfaces identified via DMI"); |
| 1330 | #endif |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1331 | module_param_named(tryplatform, si_tryplatform, bool, 0); |
| 1332 | MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the" |
| 1333 | " default scan of the interfaces identified via platform" |
| 1334 | " interfaces like openfirmware"); |
| 1335 | #ifdef CONFIG_PCI |
| 1336 | module_param_named(trypci, si_trypci, bool, 0); |
| 1337 | MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the" |
| 1338 | " default scan of the interfaces identified via pci"); |
| 1339 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | module_param_named(trydefaults, si_trydefaults, bool, 0); |
| 1341 | MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" |
| 1342 | " default scan of the KCS and SMIC interface at the standard" |
| 1343 | " address"); |
| 1344 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); |
| 1345 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" |
| 1346 | " interface separated by commas. The types are 'kcs'," |
| 1347 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" |
| 1348 | " the first interface to kcs and the second to bt"); |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1349 | module_param_array(addrs, ulong, &num_addrs, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" |
| 1351 | " addresses separated by commas. Only use if an interface" |
| 1352 | " is in memory. Otherwise, set it to zero or leave" |
| 1353 | " it blank."); |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1354 | module_param_array(ports, uint, &num_ports, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" |
| 1356 | " addresses separated by commas. Only use if an interface" |
| 1357 | " is a port. Otherwise, set it to zero or leave" |
| 1358 | " it blank."); |
| 1359 | module_param_array(irqs, int, &num_irqs, 0); |
| 1360 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" |
| 1361 | " addresses separated by commas. Only use if an interface" |
| 1362 | " has an interrupt. Otherwise, set it to zero or leave" |
| 1363 | " it blank."); |
| 1364 | module_param_array(regspacings, int, &num_regspacings, 0); |
| 1365 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" |
| 1366 | " and each successive register used by the interface. For" |
| 1367 | " instance, if the start address is 0xca2 and the spacing" |
| 1368 | " is 2, then the second address is at 0xca4. Defaults" |
| 1369 | " to 1."); |
| 1370 | module_param_array(regsizes, int, &num_regsizes, 0); |
| 1371 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." |
| 1372 | " This should generally be 1, 2, 4, or 8 for an 8-bit," |
| 1373 | " 16-bit, 32-bit, or 64-bit register. Use this if you" |
| 1374 | " the 8-bit IPMI register has to be read from a larger" |
| 1375 | " register."); |
| 1376 | module_param_array(regshifts, int, &num_regshifts, 0); |
| 1377 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." |
| 1378 | " IPMI register, in bits. For instance, if the data" |
| 1379 | " is read from a 32-bit word and the IPMI data is in" |
| 1380 | " bit 8-15, then the shift would be 8"); |
| 1381 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); |
| 1382 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" |
| 1383 | " the controller. Normally this is 0x20, but can be" |
| 1384 | " overridden by this parm. This is an array indexed" |
| 1385 | " by interface number."); |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1386 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
| 1387 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" |
| 1388 | " disabled(0). Normally the IPMI driver auto-detects" |
| 1389 | " this, but the value may be overridden by this parm."); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1390 | module_param(unload_when_empty, bool, 0); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1391 | MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are" |
| 1392 | " specified or found, default is 1. Setting to 0" |
| 1393 | " is useful for hot add of devices using hotmod."); |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1394 | module_param_array(kipmid_max_busy_us, uint, &num_max_busy_us, 0644); |
| 1395 | MODULE_PARM_DESC(kipmid_max_busy_us, |
| 1396 | "Max time (in microseconds) to busy-wait for IPMI data before" |
| 1397 | " sleeping. 0 (default) means to wait forever. Set to 100-500" |
| 1398 | " if kipmid is using up a lot of CPU time."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | |
| 1400 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1401 | static void std_irq_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1403 | if (info->si_type == SI_BT) |
| 1404 | /* Disable the interrupt in the BT interface. */ |
| 1405 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); |
| 1406 | free_irq(info->irq, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | |
| 1409 | static int std_irq_setup(struct smi_info *info) |
| 1410 | { |
| 1411 | int rv; |
| 1412 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1413 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | return 0; |
| 1415 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1416 | if (info->si_type == SI_BT) { |
| 1417 | rv = request_irq(info->irq, |
| 1418 | si_bt_irq_handler, |
Michael Opdenacker | aa5b2ba | 2014-01-24 14:00:50 -0600 | [diff] [blame] | 1419 | IRQF_SHARED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1420 | DEVICE_NAME, |
| 1421 | info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1422 | if (!rv) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1423 | /* Enable the interrupt in the BT interface. */ |
| 1424 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, |
| 1425 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
| 1426 | } else |
| 1427 | rv = request_irq(info->irq, |
| 1428 | si_irq_handler, |
Michael Opdenacker | aa5b2ba | 2014-01-24 14:00:50 -0600 | [diff] [blame] | 1429 | IRQF_SHARED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1430 | DEVICE_NAME, |
| 1431 | info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1433 | dev_warn(info->dev, "%s unable to claim interrupt %d," |
| 1434 | " running polled\n", |
| 1435 | DEVICE_NAME, info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | info->irq = 0; |
| 1437 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1438 | info->irq_cleanup = std_irq_cleanup; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1439 | dev_info(info->dev, "Using irq %d\n", info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | } |
| 1441 | |
| 1442 | return rv; |
| 1443 | } |
| 1444 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1445 | static unsigned char port_inb(const struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1447 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1449 | return inb(addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | } |
| 1451 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1452 | static void port_outb(const struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | unsigned char b) |
| 1454 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1455 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1457 | outb(b, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | } |
| 1459 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1460 | static unsigned char port_inw(const struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1462 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1464 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1465 | } |
| 1466 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1467 | static void port_outw(const struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | unsigned char b) |
| 1469 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1470 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1472 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | } |
| 1474 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1475 | static unsigned char port_inl(const struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1477 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1479 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | } |
| 1481 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1482 | static void port_outl(const struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | unsigned char b) |
| 1484 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1485 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1487 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | } |
| 1489 | |
| 1490 | static void port_cleanup(struct smi_info *info) |
| 1491 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1492 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1493 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1495 | if (addr) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1496 | for (idx = 0; idx < info->io_size; idx++) |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1497 | release_region(addr + idx * info->io.regspacing, |
| 1498 | info->io.regsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | } |
| 1501 | |
| 1502 | static int port_setup(struct smi_info *info) |
| 1503 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1504 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1505 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1507 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | return -ENODEV; |
| 1509 | |
| 1510 | info->io_cleanup = port_cleanup; |
| 1511 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1512 | /* |
| 1513 | * Figure out the actual inb/inw/inl/etc routine to use based |
| 1514 | * upon the register size. |
| 1515 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | switch (info->io.regsize) { |
| 1517 | case 1: |
| 1518 | info->io.inputb = port_inb; |
| 1519 | info->io.outputb = port_outb; |
| 1520 | break; |
| 1521 | case 2: |
| 1522 | info->io.inputb = port_inw; |
| 1523 | info->io.outputb = port_outw; |
| 1524 | break; |
| 1525 | case 4: |
| 1526 | info->io.inputb = port_inl; |
| 1527 | info->io.outputb = port_outl; |
| 1528 | break; |
| 1529 | default: |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1530 | dev_warn(info->dev, "Invalid register size: %d\n", |
| 1531 | info->io.regsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | return -EINVAL; |
| 1533 | } |
| 1534 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1535 | /* |
| 1536 | * Some BIOSes reserve disjoint I/O regions in their ACPI |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1537 | * tables. This causes problems when trying to register the |
| 1538 | * entire I/O region. Therefore we must register each I/O |
| 1539 | * port separately. |
| 1540 | */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1541 | for (idx = 0; idx < info->io_size; idx++) { |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1542 | if (request_region(addr + idx * info->io.regspacing, |
| 1543 | info->io.regsize, DEVICE_NAME) == NULL) { |
| 1544 | /* Undo allocations */ |
| 1545 | while (idx--) { |
| 1546 | release_region(addr + idx * info->io.regspacing, |
| 1547 | info->io.regsize); |
| 1548 | } |
| 1549 | return -EIO; |
| 1550 | } |
| 1551 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | return 0; |
| 1553 | } |
| 1554 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1555 | static unsigned char intf_mem_inb(const struct si_sm_io *io, |
| 1556 | unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | { |
| 1558 | return readb((io->addr)+(offset * io->regspacing)); |
| 1559 | } |
| 1560 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1561 | static void intf_mem_outb(const struct si_sm_io *io, unsigned int offset, |
| 1562 | unsigned char b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | { |
| 1564 | writeb(b, (io->addr)+(offset * io->regspacing)); |
| 1565 | } |
| 1566 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1567 | static unsigned char intf_mem_inw(const struct si_sm_io *io, |
| 1568 | unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | { |
| 1570 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1571 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | } |
| 1573 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1574 | static void intf_mem_outw(const struct si_sm_io *io, unsigned int offset, |
| 1575 | unsigned char b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | { |
| 1577 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1578 | } |
| 1579 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1580 | static unsigned char intf_mem_inl(const struct si_sm_io *io, |
| 1581 | unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | { |
| 1583 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1584 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | } |
| 1586 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1587 | static void intf_mem_outl(const struct si_sm_io *io, unsigned int offset, |
| 1588 | unsigned char b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | { |
| 1590 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1591 | } |
| 1592 | |
| 1593 | #ifdef readq |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1594 | static unsigned char mem_inq(const struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | { |
| 1596 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1597 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | } |
| 1599 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 1600 | static void mem_outq(const struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | unsigned char b) |
| 1602 | { |
| 1603 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1604 | } |
| 1605 | #endif |
| 1606 | |
| 1607 | static void mem_cleanup(struct smi_info *info) |
| 1608 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1609 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | int mapsize; |
| 1611 | |
| 1612 | if (info->io.addr) { |
| 1613 | iounmap(info->io.addr); |
| 1614 | |
| 1615 | mapsize = ((info->io_size * info->io.regspacing) |
| 1616 | - (info->io.regspacing - info->io.regsize)); |
| 1617 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1618 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | } |
| 1621 | |
| 1622 | static int mem_setup(struct smi_info *info) |
| 1623 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1624 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | int mapsize; |
| 1626 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1627 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | return -ENODEV; |
| 1629 | |
| 1630 | info->io_cleanup = mem_cleanup; |
| 1631 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1632 | /* |
| 1633 | * Figure out the actual readb/readw/readl/etc routine to use based |
| 1634 | * upon the register size. |
| 1635 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | switch (info->io.regsize) { |
| 1637 | case 1: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1638 | info->io.inputb = intf_mem_inb; |
| 1639 | info->io.outputb = intf_mem_outb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | break; |
| 1641 | case 2: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1642 | info->io.inputb = intf_mem_inw; |
| 1643 | info->io.outputb = intf_mem_outw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | break; |
| 1645 | case 4: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1646 | info->io.inputb = intf_mem_inl; |
| 1647 | info->io.outputb = intf_mem_outl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | break; |
| 1649 | #ifdef readq |
| 1650 | case 8: |
| 1651 | info->io.inputb = mem_inq; |
| 1652 | info->io.outputb = mem_outq; |
| 1653 | break; |
| 1654 | #endif |
| 1655 | default: |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1656 | dev_warn(info->dev, "Invalid register size: %d\n", |
| 1657 | info->io.regsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | return -EINVAL; |
| 1659 | } |
| 1660 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1661 | /* |
| 1662 | * Calculate the total amount of memory to claim. This is an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | * unusual looking calculation, but it avoids claiming any |
| 1664 | * more memory than it has to. It will claim everything |
| 1665 | * between the first address to the end of the last full |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1666 | * register. |
| 1667 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | mapsize = ((info->io_size * info->io.regspacing) |
| 1669 | - (info->io.regspacing - info->io.regsize)); |
| 1670 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1671 | if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | return -EIO; |
| 1673 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1674 | info->io.addr = ioremap(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | if (info->io.addr == NULL) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1676 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | return -EIO; |
| 1678 | } |
| 1679 | return 0; |
| 1680 | } |
| 1681 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1682 | /* |
| 1683 | * Parms come in as <op1>[:op2[:op3...]]. ops are: |
| 1684 | * add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]] |
| 1685 | * Options are: |
| 1686 | * rsp=<regspacing> |
| 1687 | * rsi=<regsize> |
| 1688 | * rsh=<regshift> |
| 1689 | * irq=<irq> |
| 1690 | * ipmb=<ipmb addr> |
| 1691 | */ |
| 1692 | enum hotmod_op { HM_ADD, HM_REMOVE }; |
| 1693 | struct hotmod_vals { |
| 1694 | char *name; |
| 1695 | int val; |
| 1696 | }; |
| 1697 | static struct hotmod_vals hotmod_ops[] = { |
| 1698 | { "add", HM_ADD }, |
| 1699 | { "remove", HM_REMOVE }, |
| 1700 | { NULL } |
| 1701 | }; |
| 1702 | static struct hotmod_vals hotmod_si[] = { |
| 1703 | { "kcs", SI_KCS }, |
| 1704 | { "smic", SI_SMIC }, |
| 1705 | { "bt", SI_BT }, |
| 1706 | { NULL } |
| 1707 | }; |
| 1708 | static struct hotmod_vals hotmod_as[] = { |
| 1709 | { "mem", IPMI_MEM_ADDR_SPACE }, |
| 1710 | { "i/o", IPMI_IO_ADDR_SPACE }, |
| 1711 | { NULL } |
| 1712 | }; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1713 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1714 | static int parse_str(struct hotmod_vals *v, int *val, char *name, char **curr) |
| 1715 | { |
| 1716 | char *s; |
| 1717 | int i; |
| 1718 | |
| 1719 | s = strchr(*curr, ','); |
| 1720 | if (!s) { |
| 1721 | printk(KERN_WARNING PFX "No hotmod %s given.\n", name); |
| 1722 | return -EINVAL; |
| 1723 | } |
| 1724 | *s = '\0'; |
| 1725 | s++; |
Corey Minyard | ceb51ca | 2014-10-10 17:45:45 -0500 | [diff] [blame] | 1726 | for (i = 0; v[i].name; i++) { |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1727 | if (strcmp(*curr, v[i].name) == 0) { |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1728 | *val = v[i].val; |
| 1729 | *curr = s; |
| 1730 | return 0; |
| 1731 | } |
| 1732 | } |
| 1733 | |
| 1734 | printk(KERN_WARNING PFX "Invalid hotmod %s '%s'\n", name, *curr); |
| 1735 | return -EINVAL; |
| 1736 | } |
| 1737 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1738 | static int check_hotmod_int_op(const char *curr, const char *option, |
| 1739 | const char *name, int *val) |
| 1740 | { |
| 1741 | char *n; |
| 1742 | |
| 1743 | if (strcmp(curr, name) == 0) { |
| 1744 | if (!option) { |
| 1745 | printk(KERN_WARNING PFX |
| 1746 | "No option given for '%s'\n", |
| 1747 | curr); |
| 1748 | return -EINVAL; |
| 1749 | } |
| 1750 | *val = simple_strtoul(option, &n, 0); |
| 1751 | if ((*n != '\0') || (*option == '\0')) { |
| 1752 | printk(KERN_WARNING PFX |
| 1753 | "Bad option given for '%s'\n", |
| 1754 | curr); |
| 1755 | return -EINVAL; |
| 1756 | } |
| 1757 | return 1; |
| 1758 | } |
| 1759 | return 0; |
| 1760 | } |
| 1761 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1762 | static struct smi_info *smi_info_alloc(void) |
| 1763 | { |
| 1764 | struct smi_info *info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1765 | |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1766 | if (info) |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1767 | spin_lock_init(&info->si_lock); |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1768 | return info; |
| 1769 | } |
| 1770 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1771 | static int hotmod_handler(const char *val, struct kernel_param *kp) |
| 1772 | { |
| 1773 | char *str = kstrdup(val, GFP_KERNEL); |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1774 | int rv; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1775 | char *next, *curr, *s, *n, *o; |
| 1776 | enum hotmod_op op; |
| 1777 | enum si_type si_type; |
| 1778 | int addr_space; |
| 1779 | unsigned long addr; |
| 1780 | int regspacing; |
| 1781 | int regsize; |
| 1782 | int regshift; |
| 1783 | int irq; |
| 1784 | int ipmb; |
| 1785 | int ival; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1786 | int len; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1787 | struct smi_info *info; |
| 1788 | |
| 1789 | if (!str) |
| 1790 | return -ENOMEM; |
| 1791 | |
| 1792 | /* Kill any trailing spaces, as we can get a "\n" from echo. */ |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1793 | len = strlen(str); |
| 1794 | ival = len - 1; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1795 | while ((ival >= 0) && isspace(str[ival])) { |
| 1796 | str[ival] = '\0'; |
| 1797 | ival--; |
| 1798 | } |
| 1799 | |
| 1800 | for (curr = str; curr; curr = next) { |
| 1801 | regspacing = 1; |
| 1802 | regsize = 1; |
| 1803 | regshift = 0; |
| 1804 | irq = 0; |
Bela Lubkin | 2f95d51 | 2010-03-10 15:23:07 -0800 | [diff] [blame] | 1805 | ipmb = 0; /* Choose the default if not specified */ |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1806 | |
| 1807 | next = strchr(curr, ':'); |
| 1808 | if (next) { |
| 1809 | *next = '\0'; |
| 1810 | next++; |
| 1811 | } |
| 1812 | |
| 1813 | rv = parse_str(hotmod_ops, &ival, "operation", &curr); |
| 1814 | if (rv) |
| 1815 | break; |
| 1816 | op = ival; |
| 1817 | |
| 1818 | rv = parse_str(hotmod_si, &ival, "interface type", &curr); |
| 1819 | if (rv) |
| 1820 | break; |
| 1821 | si_type = ival; |
| 1822 | |
| 1823 | rv = parse_str(hotmod_as, &addr_space, "address space", &curr); |
| 1824 | if (rv) |
| 1825 | break; |
| 1826 | |
| 1827 | s = strchr(curr, ','); |
| 1828 | if (s) { |
| 1829 | *s = '\0'; |
| 1830 | s++; |
| 1831 | } |
| 1832 | addr = simple_strtoul(curr, &n, 0); |
| 1833 | if ((*n != '\0') || (*curr == '\0')) { |
| 1834 | printk(KERN_WARNING PFX "Invalid hotmod address" |
| 1835 | " '%s'\n", curr); |
| 1836 | break; |
| 1837 | } |
| 1838 | |
| 1839 | while (s) { |
| 1840 | curr = s; |
| 1841 | s = strchr(curr, ','); |
| 1842 | if (s) { |
| 1843 | *s = '\0'; |
| 1844 | s++; |
| 1845 | } |
| 1846 | o = strchr(curr, '='); |
| 1847 | if (o) { |
| 1848 | *o = '\0'; |
| 1849 | o++; |
| 1850 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1851 | rv = check_hotmod_int_op(curr, o, "rsp", ®spacing); |
| 1852 | if (rv < 0) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1853 | goto out; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1854 | else if (rv) |
| 1855 | continue; |
| 1856 | rv = check_hotmod_int_op(curr, o, "rsi", ®size); |
| 1857 | if (rv < 0) |
| 1858 | goto out; |
| 1859 | else if (rv) |
| 1860 | continue; |
| 1861 | rv = check_hotmod_int_op(curr, o, "rsh", ®shift); |
| 1862 | if (rv < 0) |
| 1863 | goto out; |
| 1864 | else if (rv) |
| 1865 | continue; |
| 1866 | rv = check_hotmod_int_op(curr, o, "irq", &irq); |
| 1867 | if (rv < 0) |
| 1868 | goto out; |
| 1869 | else if (rv) |
| 1870 | continue; |
| 1871 | rv = check_hotmod_int_op(curr, o, "ipmb", &ipmb); |
| 1872 | if (rv < 0) |
| 1873 | goto out; |
| 1874 | else if (rv) |
| 1875 | continue; |
| 1876 | |
| 1877 | rv = -EINVAL; |
| 1878 | printk(KERN_WARNING PFX |
| 1879 | "Invalid hotmod option '%s'\n", |
| 1880 | curr); |
| 1881 | goto out; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1882 | } |
| 1883 | |
| 1884 | if (op == HM_ADD) { |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1885 | info = smi_info_alloc(); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1886 | if (!info) { |
| 1887 | rv = -ENOMEM; |
| 1888 | goto out; |
| 1889 | } |
| 1890 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 1891 | info->addr_source = SI_HOTMOD; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1892 | info->si_type = si_type; |
| 1893 | info->io.addr_data = addr; |
| 1894 | info->io.addr_type = addr_space; |
| 1895 | if (addr_space == IPMI_MEM_ADDR_SPACE) |
| 1896 | info->io_setup = mem_setup; |
| 1897 | else |
| 1898 | info->io_setup = port_setup; |
| 1899 | |
| 1900 | info->io.addr = NULL; |
| 1901 | info->io.regspacing = regspacing; |
| 1902 | if (!info->io.regspacing) |
| 1903 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1904 | info->io.regsize = regsize; |
| 1905 | if (!info->io.regsize) |
| 1906 | info->io.regsize = DEFAULT_REGSPACING; |
| 1907 | info->io.regshift = regshift; |
| 1908 | info->irq = irq; |
| 1909 | if (info->irq) |
| 1910 | info->irq_setup = std_irq_setup; |
| 1911 | info->slave_addr = ipmb; |
| 1912 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 1913 | rv = add_smi(info); |
| 1914 | if (rv) { |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 1915 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 1916 | goto out; |
| 1917 | } |
| 1918 | rv = try_smi_init(info); |
| 1919 | if (rv) { |
| 1920 | cleanup_one_si(info); |
| 1921 | goto out; |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 1922 | } |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1923 | } else { |
| 1924 | /* remove */ |
| 1925 | struct smi_info *e, *tmp_e; |
| 1926 | |
| 1927 | mutex_lock(&smi_infos_lock); |
| 1928 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) { |
| 1929 | if (e->io.addr_type != addr_space) |
| 1930 | continue; |
| 1931 | if (e->si_type != si_type) |
| 1932 | continue; |
| 1933 | if (e->io.addr_data == addr) |
| 1934 | cleanup_one_si(e); |
| 1935 | } |
| 1936 | mutex_unlock(&smi_infos_lock); |
| 1937 | } |
| 1938 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1939 | rv = len; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1940 | out: |
| 1941 | kfree(str); |
| 1942 | return rv; |
| 1943 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1944 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 1945 | static int hardcode_find_bmc(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | { |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 1947 | int ret = -ENODEV; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1948 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | struct smi_info *info; |
| 1950 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1951 | for (i = 0; i < SI_MAX_PARMS; i++) { |
| 1952 | if (!ports[i] && !addrs[i]) |
| 1953 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1955 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1956 | if (!info) |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 1957 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 1959 | info->addr_source = SI_HARDCODED; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1960 | printk(KERN_INFO PFX "probing via hardcoded address\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1961 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1962 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1963 | info->si_type = SI_KCS; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1964 | } else if (strcmp(si_type[i], "smic") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1965 | info->si_type = SI_SMIC; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1966 | } else if (strcmp(si_type[i], "bt") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1967 | info->si_type = SI_BT; |
| 1968 | } else { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1969 | printk(KERN_WARNING PFX "Interface type specified " |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1970 | "for interface %d, was invalid: %s\n", |
| 1971 | i, si_type[i]); |
| 1972 | kfree(info); |
| 1973 | continue; |
| 1974 | } |
| 1975 | |
| 1976 | if (ports[i]) { |
| 1977 | /* An I/O port */ |
| 1978 | info->io_setup = port_setup; |
| 1979 | info->io.addr_data = ports[i]; |
| 1980 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 1981 | } else if (addrs[i]) { |
| 1982 | /* A memory port */ |
| 1983 | info->io_setup = mem_setup; |
| 1984 | info->io.addr_data = addrs[i]; |
| 1985 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 1986 | } else { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1987 | printk(KERN_WARNING PFX "Interface type specified " |
| 1988 | "for interface %d, but port and address were " |
| 1989 | "not set or set to zero.\n", i); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1990 | kfree(info); |
| 1991 | continue; |
| 1992 | } |
| 1993 | |
| 1994 | info->io.addr = NULL; |
| 1995 | info->io.regspacing = regspacings[i]; |
| 1996 | if (!info->io.regspacing) |
| 1997 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1998 | info->io.regsize = regsizes[i]; |
| 1999 | if (!info->io.regsize) |
| 2000 | info->io.regsize = DEFAULT_REGSPACING; |
| 2001 | info->io.regshift = regshifts[i]; |
| 2002 | info->irq = irqs[i]; |
| 2003 | if (info->irq) |
| 2004 | info->irq_setup = std_irq_setup; |
Bela Lubkin | 2f95d51 | 2010-03-10 15:23:07 -0800 | [diff] [blame] | 2005 | info->slave_addr = slave_addrs[i]; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2006 | |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2007 | if (!add_smi(info)) { |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 2008 | if (try_smi_init(info)) |
| 2009 | cleanup_one_si(info); |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2010 | ret = 0; |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2011 | } else { |
| 2012 | kfree(info); |
| 2013 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | } |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2015 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | } |
| 2017 | |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 2018 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | |
| 2020 | #include <linux/acpi.h> |
| 2021 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2022 | /* |
| 2023 | * Once we get an ACPI failure, we don't try any more, because we go |
| 2024 | * through the tables sequentially. Once we don't find a table, there |
| 2025 | * are no more. |
| 2026 | */ |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 2027 | static int acpi_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | |
| 2029 | /* For GPE-type interrupts. */ |
Lin Ming | 8b6cd8a | 2010-12-13 13:38:46 +0800 | [diff] [blame] | 2030 | static u32 ipmi_acpi_gpe(acpi_handle gpe_device, |
| 2031 | u32 gpe_number, void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | { |
| 2033 | struct smi_info *smi_info = context; |
| 2034 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | |
| 2036 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 2037 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 2038 | smi_inc_stat(smi_info, interrupts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 2040 | debug_timestamp("ACPI_GPE"); |
| 2041 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 2044 | |
| 2045 | return ACPI_INTERRUPT_HANDLED; |
| 2046 | } |
| 2047 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2048 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
| 2049 | { |
| 2050 | if (!info->irq) |
| 2051 | return; |
| 2052 | |
| 2053 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); |
| 2054 | } |
| 2055 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2056 | static int acpi_gpe_irq_setup(struct smi_info *info) |
| 2057 | { |
| 2058 | acpi_status status; |
| 2059 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2060 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | return 0; |
| 2062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | status = acpi_install_gpe_handler(NULL, |
| 2064 | info->irq, |
| 2065 | ACPI_GPE_LEVEL_TRIGGERED, |
| 2066 | &ipmi_acpi_gpe, |
| 2067 | info); |
| 2068 | if (status != AE_OK) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2069 | dev_warn(info->dev, "%s unable to claim ACPI GPE %d," |
| 2070 | " running polled\n", DEVICE_NAME, info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | info->irq = 0; |
| 2072 | return -EINVAL; |
| 2073 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2074 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2075 | dev_info(info->dev, "Using ACPI GPE %d\n", info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | return 0; |
| 2077 | } |
| 2078 | } |
| 2079 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2080 | /* |
| 2081 | * Defined at |
Justin P. Mattock | 631dd1a | 2010-10-18 11:03:14 +0200 | [diff] [blame] | 2082 | * http://h21007.www2.hp.com/portal/download/files/unprot/hpspmi.pdf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | */ |
| 2084 | struct SPMITable { |
| 2085 | s8 Signature[4]; |
| 2086 | u32 Length; |
| 2087 | u8 Revision; |
| 2088 | u8 Checksum; |
| 2089 | s8 OEMID[6]; |
| 2090 | s8 OEMTableID[8]; |
| 2091 | s8 OEMRevision[4]; |
| 2092 | s8 CreatorID[4]; |
| 2093 | s8 CreatorRevision[4]; |
| 2094 | u8 InterfaceType; |
| 2095 | u8 IPMIlegacy; |
| 2096 | s16 SpecificationRevision; |
| 2097 | |
| 2098 | /* |
| 2099 | * Bit 0 - SCI interrupt supported |
| 2100 | * Bit 1 - I/O APIC/SAPIC |
| 2101 | */ |
| 2102 | u8 InterruptType; |
| 2103 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2104 | /* |
| 2105 | * If bit 0 of InterruptType is set, then this is the SCI |
| 2106 | * interrupt in the GPEx_STS register. |
| 2107 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2108 | u8 GPE; |
| 2109 | |
| 2110 | s16 Reserved; |
| 2111 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2112 | /* |
| 2113 | * If bit 1 of InterruptType is set, then this is the I/O |
| 2114 | * APIC/SAPIC interrupt. |
| 2115 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2116 | u32 GlobalSystemInterrupt; |
| 2117 | |
| 2118 | /* The actual register address. */ |
| 2119 | struct acpi_generic_address addr; |
| 2120 | |
| 2121 | u8 UID[4]; |
| 2122 | |
| 2123 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ |
| 2124 | }; |
| 2125 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2126 | static int try_init_spmi(struct SPMITable *spmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | { |
| 2128 | struct smi_info *info; |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2129 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | if (spmi->IPMIlegacy != 1) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2132 | printk(KERN_INFO PFX "Bad SPMI legacy %d\n", spmi->IPMIlegacy); |
| 2133 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | } |
| 2135 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2136 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2137 | if (!info) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2138 | printk(KERN_ERR PFX "Could not allocate SI data (3)\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2139 | return -ENOMEM; |
| 2140 | } |
| 2141 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2142 | info->addr_source = SI_SPMI; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2143 | printk(KERN_INFO PFX "probing via SPMI\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | /* Figure out the interface type. */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2146 | switch (spmi->InterfaceType) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | case 1: /* KCS */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2148 | info->si_type = SI_KCS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2150 | case 2: /* SMIC */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2151 | info->si_type = SI_SMIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | case 3: /* BT */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2154 | info->si_type = SI_BT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2155 | break; |
Corey Minyard | ab42bf2 | 2014-10-09 07:12:08 -0500 | [diff] [blame] | 2156 | case 4: /* SSIF, just ignore */ |
| 2157 | kfree(info); |
| 2158 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | default: |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2160 | printk(KERN_INFO PFX "Unknown ACPI/SPMI SI type %d\n", |
| 2161 | spmi->InterfaceType); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2162 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | return -EIO; |
| 2164 | } |
| 2165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | if (spmi->InterruptType & 1) { |
| 2167 | /* We've got a GPE interrupt. */ |
| 2168 | info->irq = spmi->GPE; |
| 2169 | info->irq_setup = acpi_gpe_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | } else if (spmi->InterruptType & 2) { |
| 2171 | /* We've got an APIC/SAPIC interrupt. */ |
| 2172 | info->irq = spmi->GlobalSystemInterrupt; |
| 2173 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | } else { |
| 2175 | /* Use the default interrupt setting. */ |
| 2176 | info->irq = 0; |
| 2177 | info->irq_setup = NULL; |
| 2178 | } |
| 2179 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2180 | if (spmi->addr.bit_width) { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2181 | /* A (hopefully) properly formed register bit width. */ |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2182 | info->io.regspacing = spmi->addr.bit_width / 8; |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2183 | } else { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2184 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2185 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2186 | info->io.regsize = info->io.regspacing; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2187 | info->io.regshift = spmi->addr.bit_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2188 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2189 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | info->io_setup = mem_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 2191 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2192 | } else if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | info->io_setup = port_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 2194 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | } else { |
| 2196 | kfree(info); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2197 | printk(KERN_WARNING PFX "Unknown ACPI I/O Address type\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | return -EIO; |
| 2199 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2200 | info->io.addr_data = spmi->addr.address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2201 | |
Yinghai Lu | 7bb671e | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2202 | pr_info("ipmi_si: SPMI: %s %#lx regsize %d spacing %d irq %d\n", |
| 2203 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? "io" : "mem", |
| 2204 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2205 | info->irq); |
| 2206 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2207 | rv = add_smi(info); |
| 2208 | if (rv) |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2209 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2211 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2213 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2214 | static void spmi_find_bmc(void) |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2215 | { |
| 2216 | acpi_status status; |
| 2217 | struct SPMITable *spmi; |
| 2218 | int i; |
| 2219 | |
| 2220 | if (acpi_disabled) |
| 2221 | return; |
| 2222 | |
| 2223 | if (acpi_failure) |
| 2224 | return; |
| 2225 | |
| 2226 | for (i = 0; ; i++) { |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2227 | status = acpi_get_table(ACPI_SIG_SPMI, i+1, |
| 2228 | (struct acpi_table_header **)&spmi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2229 | if (status != AE_OK) |
| 2230 | return; |
| 2231 | |
Bjorn Helgaas | 18a3e0b | 2009-11-17 17:05:29 -0700 | [diff] [blame] | 2232 | try_init_spmi(spmi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2233 | } |
| 2234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | #endif |
| 2236 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2237 | #ifdef CONFIG_DMI |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2238 | struct dmi_ipmi_data { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2239 | u8 type; |
| 2240 | u8 addr_space; |
| 2241 | unsigned long base_addr; |
| 2242 | u8 irq; |
| 2243 | u8 offset; |
| 2244 | u8 slave_addr; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2245 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2247 | static int decode_dmi(const struct dmi_header *dm, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2248 | struct dmi_ipmi_data *dmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2250 | const u8 *data = (const u8 *)dm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | unsigned long base_addr; |
| 2252 | u8 reg_spacing; |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2253 | u8 len = dm->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2255 | dmi->type = data[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | |
| 2257 | memcpy(&base_addr, data+8, sizeof(unsigned long)); |
| 2258 | if (len >= 0x11) { |
| 2259 | if (base_addr & 1) { |
| 2260 | /* I/O */ |
| 2261 | base_addr &= 0xFFFE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2262 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2263 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | /* Memory */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2265 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2267 | /* If bit 4 of byte 0x10 is set, then the lsb for the address |
| 2268 | is odd. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2269 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2271 | dmi->irq = data[0x11]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | |
| 2273 | /* The top two bits of byte 0x10 hold the register spacing. */ |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2274 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2275 | switch (reg_spacing) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | case 0x00: /* Byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2277 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | break; |
| 2279 | case 0x01: /* 32-bit boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2280 | dmi->offset = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | break; |
| 2282 | case 0x02: /* 16-byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2283 | dmi->offset = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | break; |
| 2285 | default: |
| 2286 | /* Some other interface, just ignore it. */ |
| 2287 | return -EIO; |
| 2288 | } |
| 2289 | } else { |
| 2290 | /* Old DMI spec. */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2291 | /* |
| 2292 | * Note that technically, the lower bit of the base |
Corey Minyard | 9206880 | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2293 | * address should be 1 if the address is I/O and 0 if |
| 2294 | * the address is in memory. So many systems get that |
| 2295 | * wrong (and all that I have seen are I/O) so we just |
| 2296 | * ignore that bit and assume I/O. Systems that use |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2297 | * memory should use the newer spec, anyway. |
| 2298 | */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2299 | dmi->base_addr = base_addr & 0xfffe; |
| 2300 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
| 2301 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | } |
| 2303 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2304 | dmi->slave_addr = data[6]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2306 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | } |
| 2308 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2309 | static void try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2311 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2313 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2314 | if (!info) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2315 | printk(KERN_ERR PFX "Could not allocate SI data\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2316 | return; |
| 2317 | } |
| 2318 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2319 | info->addr_source = SI_SMBIOS; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2320 | printk(KERN_INFO PFX "probing via SMBIOS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2322 | switch (ipmi_data->type) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2323 | case 0x01: /* KCS */ |
| 2324 | info->si_type = SI_KCS; |
| 2325 | break; |
| 2326 | case 0x02: /* SMIC */ |
| 2327 | info->si_type = SI_SMIC; |
| 2328 | break; |
| 2329 | case 0x03: /* BT */ |
| 2330 | info->si_type = SI_BT; |
| 2331 | break; |
| 2332 | default: |
Jesper Juhl | 80cd692 | 2007-07-31 00:39:05 -0700 | [diff] [blame] | 2333 | kfree(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2334 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | } |
| 2336 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2337 | switch (ipmi_data->addr_space) { |
| 2338 | case IPMI_MEM_ADDR_SPACE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2339 | info->io_setup = mem_setup; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2340 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2341 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2343 | case IPMI_IO_ADDR_SPACE: |
| 2344 | info->io_setup = port_setup; |
| 2345 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2346 | break; |
| 2347 | |
| 2348 | default: |
| 2349 | kfree(info); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2350 | printk(KERN_WARNING PFX "Unknown SMBIOS I/O Address type: %d\n", |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2351 | ipmi_data->addr_space); |
| 2352 | return; |
| 2353 | } |
| 2354 | info->io.addr_data = ipmi_data->base_addr; |
| 2355 | |
| 2356 | info->io.regspacing = ipmi_data->offset; |
| 2357 | if (!info->io.regspacing) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2358 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2359 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2360 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | |
| 2362 | info->slave_addr = ipmi_data->slave_addr; |
| 2363 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2364 | info->irq = ipmi_data->irq; |
| 2365 | if (info->irq) |
| 2366 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2367 | |
Yinghai Lu | 7bb671e | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2368 | pr_info("ipmi_si: SMBIOS: %s %#lx regsize %d spacing %d irq %d\n", |
| 2369 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? "io" : "mem", |
| 2370 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2371 | info->irq); |
| 2372 | |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2373 | if (add_smi(info)) |
| 2374 | kfree(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2375 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2377 | static void dmi_find_bmc(void) |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2378 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2379 | const struct dmi_device *dev = NULL; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2380 | struct dmi_ipmi_data data; |
| 2381 | int rv; |
| 2382 | |
| 2383 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { |
Jeff Garzik | 397f4eb | 2006-10-03 01:13:52 -0700 | [diff] [blame] | 2384 | memset(&data, 0, sizeof(data)); |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2385 | rv = decode_dmi((const struct dmi_header *) dev->device_data, |
| 2386 | &data); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2387 | if (!rv) |
| 2388 | try_init_dmi(&data); |
| 2389 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2390 | } |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2391 | #endif /* CONFIG_DMI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | |
| 2393 | #ifdef CONFIG_PCI |
| 2394 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2395 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
| 2396 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 |
| 2397 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff |
| 2398 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 |
| 2399 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 |
| 2400 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 |
| 2401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | #define PCI_HP_VENDOR_ID 0x103C |
| 2403 | #define PCI_MMC_DEVICE_ID 0x121A |
| 2404 | #define PCI_MMC_ADDR_CW 0x10 |
| 2405 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2406 | static void ipmi_pci_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2408 | struct pci_dev *pdev = info->addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2409 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2410 | pci_disable_device(pdev); |
| 2411 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2412 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2413 | static int ipmi_pci_probe_regspacing(struct smi_info *info) |
Corey Minyard | a6c16c2 | 2012-10-16 15:53:40 -0500 | [diff] [blame] | 2414 | { |
| 2415 | if (info->si_type == SI_KCS) { |
| 2416 | unsigned char status; |
| 2417 | int regspacing; |
| 2418 | |
| 2419 | info->io.regsize = DEFAULT_REGSIZE; |
| 2420 | info->io.regshift = 0; |
| 2421 | info->io_size = 2; |
| 2422 | info->handlers = &kcs_smi_handlers; |
| 2423 | |
| 2424 | /* detect 1, 4, 16byte spacing */ |
| 2425 | for (regspacing = DEFAULT_REGSPACING; regspacing <= 16;) { |
| 2426 | info->io.regspacing = regspacing; |
| 2427 | if (info->io_setup(info)) { |
| 2428 | dev_err(info->dev, |
| 2429 | "Could not setup I/O space\n"); |
| 2430 | return DEFAULT_REGSPACING; |
| 2431 | } |
| 2432 | /* write invalid cmd */ |
| 2433 | info->io.outputb(&info->io, 1, 0x10); |
| 2434 | /* read status back */ |
| 2435 | status = info->io.inputb(&info->io, 1); |
| 2436 | info->io_cleanup(info); |
| 2437 | if (status) |
| 2438 | return regspacing; |
| 2439 | regspacing *= 4; |
| 2440 | } |
| 2441 | } |
| 2442 | return DEFAULT_REGSPACING; |
| 2443 | } |
| 2444 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2445 | static int ipmi_pci_probe(struct pci_dev *pdev, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2446 | const struct pci_device_id *ent) |
| 2447 | { |
| 2448 | int rv; |
| 2449 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; |
| 2450 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2451 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2452 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2453 | if (!info) |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2454 | return -ENOMEM; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2455 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2456 | info->addr_source = SI_PCI; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2457 | dev_info(&pdev->dev, "probing via PCI"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2458 | |
| 2459 | switch (class_type) { |
| 2460 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: |
| 2461 | info->si_type = SI_SMIC; |
| 2462 | break; |
| 2463 | |
| 2464 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
| 2465 | info->si_type = SI_KCS; |
| 2466 | break; |
| 2467 | |
| 2468 | case PCI_ERMC_CLASSCODE_TYPE_BT: |
| 2469 | info->si_type = SI_BT; |
| 2470 | break; |
| 2471 | |
| 2472 | default: |
| 2473 | kfree(info); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2474 | dev_info(&pdev->dev, "Unknown IPMI type: %d\n", class_type); |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2475 | return -ENOMEM; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2476 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2477 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2478 | rv = pci_enable_device(pdev); |
| 2479 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2480 | dev_err(&pdev->dev, "couldn't enable PCI device\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2481 | kfree(info); |
| 2482 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2483 | } |
| 2484 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2485 | info->addr_source_cleanup = ipmi_pci_cleanup; |
| 2486 | info->addr_source_data = pdev; |
| 2487 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2488 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
| 2489 | info->io_setup = port_setup; |
| 2490 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2491 | } else { |
| 2492 | info->io_setup = mem_setup; |
| 2493 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2494 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2495 | info->io.addr_data = pci_resource_start(pdev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2496 | |
Corey Minyard | a6c16c2 | 2012-10-16 15:53:40 -0500 | [diff] [blame] | 2497 | info->io.regspacing = ipmi_pci_probe_regspacing(info); |
| 2498 | info->io.regsize = DEFAULT_REGSIZE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2499 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2500 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2501 | info->irq = pdev->irq; |
| 2502 | if (info->irq) |
| 2503 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2504 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2505 | info->dev = &pdev->dev; |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2506 | pci_set_drvdata(pdev, info); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2507 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2508 | dev_info(&pdev->dev, "%pR regsize %d spacing %d irq %d\n", |
| 2509 | &pdev->resource[0], info->io.regsize, info->io.regspacing, |
| 2510 | info->irq); |
| 2511 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2512 | rv = add_smi(info); |
| 2513 | if (rv) { |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2514 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2515 | pci_disable_device(pdev); |
| 2516 | } |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2517 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2518 | return rv; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2519 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | |
Bill Pemberton | 39af33f | 2012-11-19 13:26:26 -0500 | [diff] [blame] | 2521 | static void ipmi_pci_remove(struct pci_dev *pdev) |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2522 | { |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2523 | struct smi_info *info = pci_get_drvdata(pdev); |
| 2524 | cleanup_one_si(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2525 | pci_disable_device(pdev); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2526 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2527 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 2528 | static const struct pci_device_id ipmi_pci_devices[] = { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2529 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, |
Kees Cook | 248bdd5 | 2007-09-18 22:46:32 -0700 | [diff] [blame] | 2530 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) }, |
| 2531 | { 0, } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2532 | }; |
| 2533 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); |
| 2534 | |
| 2535 | static struct pci_driver ipmi_pci_driver = { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2536 | .name = DEVICE_NAME, |
| 2537 | .id_table = ipmi_pci_devices, |
| 2538 | .probe = ipmi_pci_probe, |
Greg Kroah-Hartman | bcd2982 | 2012-12-21 15:12:08 -0800 | [diff] [blame] | 2539 | .remove = ipmi_pci_remove, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2540 | }; |
| 2541 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2543 | #ifdef CONFIG_OF |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2544 | static const struct of_device_id of_ipmi_match[] = { |
| 2545 | { .type = "ipmi", .compatible = "ipmi-kcs", |
| 2546 | .data = (void *)(unsigned long) SI_KCS }, |
| 2547 | { .type = "ipmi", .compatible = "ipmi-smic", |
| 2548 | .data = (void *)(unsigned long) SI_SMIC }, |
| 2549 | { .type = "ipmi", .compatible = "ipmi-bt", |
| 2550 | .data = (void *)(unsigned long) SI_BT }, |
| 2551 | {}, |
| 2552 | }; |
| 2553 | |
| 2554 | static int of_ipmi_probe(struct platform_device *dev) |
| 2555 | { |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 2556 | const struct of_device_id *match; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2557 | struct smi_info *info; |
| 2558 | struct resource resource; |
Rob Herring | da81c3b | 2010-11-16 14:33:50 -0600 | [diff] [blame] | 2559 | const __be32 *regsize, *regspacing, *regshift; |
Grant Likely | 61c7a08 | 2010-04-13 16:12:29 -0700 | [diff] [blame] | 2560 | struct device_node *np = dev->dev.of_node; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2561 | int ret; |
| 2562 | int proplen; |
| 2563 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2564 | dev_info(&dev->dev, "probing via device tree\n"); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2565 | |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2566 | match = of_match_device(of_ipmi_match, &dev->dev); |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 2567 | if (!match) |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2568 | return -ENODEV; |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2569 | |
Benjamin Herrenschmidt | 08dc416 | 2014-10-06 14:17:51 -0500 | [diff] [blame] | 2570 | if (!of_device_is_available(np)) |
| 2571 | return -EINVAL; |
| 2572 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2573 | ret = of_address_to_resource(np, 0, &resource); |
| 2574 | if (ret) { |
| 2575 | dev_warn(&dev->dev, PFX "invalid address from OF\n"); |
| 2576 | return ret; |
| 2577 | } |
| 2578 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2579 | regsize = of_get_property(np, "reg-size", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2580 | if (regsize && proplen != 4) { |
| 2581 | dev_warn(&dev->dev, PFX "invalid regsize from OF\n"); |
| 2582 | return -EINVAL; |
| 2583 | } |
| 2584 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2585 | regspacing = of_get_property(np, "reg-spacing", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2586 | if (regspacing && proplen != 4) { |
| 2587 | dev_warn(&dev->dev, PFX "invalid regspacing from OF\n"); |
| 2588 | return -EINVAL; |
| 2589 | } |
| 2590 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2591 | regshift = of_get_property(np, "reg-shift", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2592 | if (regshift && proplen != 4) { |
| 2593 | dev_warn(&dev->dev, PFX "invalid regshift from OF\n"); |
| 2594 | return -EINVAL; |
| 2595 | } |
| 2596 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2597 | info = smi_info_alloc(); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2598 | |
| 2599 | if (!info) { |
| 2600 | dev_err(&dev->dev, |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2601 | "could not allocate memory for OF probe\n"); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2602 | return -ENOMEM; |
| 2603 | } |
| 2604 | |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 2605 | info->si_type = (enum si_type) match->data; |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2606 | info->addr_source = SI_DEVICETREE; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2607 | info->irq_setup = std_irq_setup; |
| 2608 | |
Nate Case | 3b7ec11 | 2008-05-14 16:05:39 -0700 | [diff] [blame] | 2609 | if (resource.flags & IORESOURCE_IO) { |
| 2610 | info->io_setup = port_setup; |
| 2611 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2612 | } else { |
| 2613 | info->io_setup = mem_setup; |
| 2614 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2615 | } |
| 2616 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2617 | info->io.addr_data = resource.start; |
| 2618 | |
Rob Herring | da81c3b | 2010-11-16 14:33:50 -0600 | [diff] [blame] | 2619 | info->io.regsize = regsize ? be32_to_cpup(regsize) : DEFAULT_REGSIZE; |
| 2620 | info->io.regspacing = regspacing ? be32_to_cpup(regspacing) : DEFAULT_REGSPACING; |
| 2621 | info->io.regshift = regshift ? be32_to_cpup(regshift) : 0; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2622 | |
Grant Likely | 61c7a08 | 2010-04-13 16:12:29 -0700 | [diff] [blame] | 2623 | info->irq = irq_of_parse_and_map(dev->dev.of_node, 0); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2624 | info->dev = &dev->dev; |
| 2625 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2626 | dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %d\n", |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2627 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2628 | info->irq); |
| 2629 | |
Greg Kroah-Hartman | 9de33df | 2009-05-04 12:40:54 -0700 | [diff] [blame] | 2630 | dev_set_drvdata(&dev->dev, info); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2631 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2632 | ret = add_smi(info); |
| 2633 | if (ret) { |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2634 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2635 | return ret; |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2636 | } |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2637 | return 0; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2638 | } |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2639 | #else |
| 2640 | #define of_ipmi_match NULL |
| 2641 | static int of_ipmi_probe(struct platform_device *dev) |
| 2642 | { |
| 2643 | return -ENODEV; |
| 2644 | } |
| 2645 | #endif |
| 2646 | |
| 2647 | #ifdef CONFIG_ACPI |
| 2648 | static int acpi_ipmi_probe(struct platform_device *dev) |
| 2649 | { |
| 2650 | struct smi_info *info; |
| 2651 | struct resource *res, *res_second; |
| 2652 | acpi_handle handle; |
| 2653 | acpi_status status; |
| 2654 | unsigned long long tmp; |
| 2655 | int rv = -EINVAL; |
| 2656 | |
| 2657 | handle = ACPI_HANDLE(&dev->dev); |
| 2658 | if (!handle) |
| 2659 | return -ENODEV; |
| 2660 | |
| 2661 | info = smi_info_alloc(); |
| 2662 | if (!info) |
| 2663 | return -ENOMEM; |
| 2664 | |
| 2665 | info->addr_source = SI_ACPI; |
| 2666 | dev_info(&dev->dev, PFX "probing via ACPI\n"); |
| 2667 | |
| 2668 | info->addr_info.acpi_info.acpi_handle = handle; |
| 2669 | |
| 2670 | /* _IFT tells us the interface type: KCS, BT, etc */ |
| 2671 | status = acpi_evaluate_integer(handle, "_IFT", NULL, &tmp); |
| 2672 | if (ACPI_FAILURE(status)) { |
| 2673 | dev_err(&dev->dev, "Could not find ACPI IPMI interface type\n"); |
| 2674 | goto err_free; |
| 2675 | } |
| 2676 | |
| 2677 | switch (tmp) { |
| 2678 | case 1: |
| 2679 | info->si_type = SI_KCS; |
| 2680 | break; |
| 2681 | case 2: |
| 2682 | info->si_type = SI_SMIC; |
| 2683 | break; |
| 2684 | case 3: |
| 2685 | info->si_type = SI_BT; |
| 2686 | break; |
| 2687 | case 4: /* SSIF, just ignore */ |
| 2688 | rv = -ENODEV; |
| 2689 | goto err_free; |
| 2690 | default: |
| 2691 | dev_info(&dev->dev, "unknown IPMI type %lld\n", tmp); |
| 2692 | goto err_free; |
| 2693 | } |
| 2694 | |
| 2695 | res = platform_get_resource(dev, IORESOURCE_IO, 0); |
| 2696 | if (res) { |
| 2697 | info->io_setup = port_setup; |
| 2698 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2699 | } else { |
| 2700 | res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| 2701 | if (res) { |
| 2702 | info->io_setup = mem_setup; |
| 2703 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2704 | } |
| 2705 | } |
| 2706 | if (!res) { |
| 2707 | dev_err(&dev->dev, "no I/O or memory address\n"); |
| 2708 | goto err_free; |
| 2709 | } |
| 2710 | info->io.addr_data = res->start; |
| 2711 | |
| 2712 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2713 | res_second = platform_get_resource(dev, |
| 2714 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? |
| 2715 | IORESOURCE_IO : IORESOURCE_MEM, |
| 2716 | 1); |
| 2717 | if (res_second) { |
| 2718 | if (res_second->start > info->io.addr_data) |
| 2719 | info->io.regspacing = |
| 2720 | res_second->start - info->io.addr_data; |
| 2721 | } |
| 2722 | info->io.regsize = DEFAULT_REGSPACING; |
| 2723 | info->io.regshift = 0; |
| 2724 | |
| 2725 | /* If _GPE exists, use it; otherwise use standard interrupts */ |
| 2726 | status = acpi_evaluate_integer(handle, "_GPE", NULL, &tmp); |
| 2727 | if (ACPI_SUCCESS(status)) { |
| 2728 | info->irq = tmp; |
| 2729 | info->irq_setup = acpi_gpe_irq_setup; |
| 2730 | } else { |
| 2731 | int irq = platform_get_irq(dev, 0); |
| 2732 | |
| 2733 | if (irq > 0) { |
| 2734 | info->irq = irq; |
| 2735 | info->irq_setup = std_irq_setup; |
| 2736 | } |
| 2737 | } |
| 2738 | |
| 2739 | info->dev = &dev->dev; |
| 2740 | platform_set_drvdata(dev, info); |
| 2741 | |
| 2742 | dev_info(info->dev, "%pR regsize %d spacing %d irq %d\n", |
| 2743 | res, info->io.regsize, info->io.regspacing, |
| 2744 | info->irq); |
| 2745 | |
| 2746 | rv = add_smi(info); |
| 2747 | if (rv) |
| 2748 | kfree(info); |
| 2749 | |
| 2750 | return rv; |
| 2751 | |
| 2752 | err_free: |
| 2753 | kfree(info); |
| 2754 | return rv; |
| 2755 | } |
| 2756 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 2757 | static const struct acpi_device_id acpi_ipmi_match[] = { |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2758 | { "IPI0001", 0 }, |
| 2759 | { }, |
| 2760 | }; |
| 2761 | MODULE_DEVICE_TABLE(acpi, acpi_ipmi_match); |
| 2762 | #else |
| 2763 | static int acpi_ipmi_probe(struct platform_device *dev) |
| 2764 | { |
| 2765 | return -ENODEV; |
| 2766 | } |
| 2767 | #endif |
| 2768 | |
| 2769 | static int ipmi_probe(struct platform_device *dev) |
| 2770 | { |
| 2771 | if (of_ipmi_probe(dev) == 0) |
| 2772 | return 0; |
| 2773 | |
| 2774 | return acpi_ipmi_probe(dev); |
| 2775 | } |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2776 | |
Bill Pemberton | 39af33f | 2012-11-19 13:26:26 -0500 | [diff] [blame] | 2777 | static int ipmi_remove(struct platform_device *dev) |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2778 | { |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2779 | struct smi_info *info = dev_get_drvdata(&dev->dev); |
| 2780 | |
Markus Elfring | a793089 | 2015-06-27 18:12:14 +0200 | [diff] [blame] | 2781 | cleanup_one_si(info); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2782 | return 0; |
| 2783 | } |
| 2784 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2785 | static struct platform_driver ipmi_driver = { |
Grant Likely | 4018294 | 2010-04-13 16:13:02 -0700 | [diff] [blame] | 2786 | .driver = { |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2787 | .name = DEVICE_NAME, |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2788 | .of_match_table = of_ipmi_match, |
| 2789 | .acpi_match_table = ACPI_PTR(acpi_ipmi_match), |
Grant Likely | 4018294 | 2010-04-13 16:13:02 -0700 | [diff] [blame] | 2790 | }, |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2791 | .probe = ipmi_probe, |
Greg Kroah-Hartman | bcd2982 | 2012-12-21 15:12:08 -0800 | [diff] [blame] | 2792 | .remove = ipmi_remove, |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2793 | }; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2794 | |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2795 | #ifdef CONFIG_PARISC |
| 2796 | static int ipmi_parisc_probe(struct parisc_device *dev) |
| 2797 | { |
| 2798 | struct smi_info *info; |
Geert Uytterhoeven | dfa1942 | 2014-01-28 20:12:35 +0100 | [diff] [blame] | 2799 | int rv; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2800 | |
| 2801 | info = smi_info_alloc(); |
| 2802 | |
| 2803 | if (!info) { |
| 2804 | dev_err(&dev->dev, |
| 2805 | "could not allocate memory for PARISC probe\n"); |
| 2806 | return -ENOMEM; |
| 2807 | } |
| 2808 | |
| 2809 | info->si_type = SI_KCS; |
| 2810 | info->addr_source = SI_DEVICETREE; |
| 2811 | info->io_setup = mem_setup; |
| 2812 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2813 | info->io.addr_data = dev->hpa.start; |
| 2814 | info->io.regsize = 1; |
| 2815 | info->io.regspacing = 1; |
| 2816 | info->io.regshift = 0; |
| 2817 | info->irq = 0; /* no interrupt */ |
| 2818 | info->irq_setup = NULL; |
| 2819 | info->dev = &dev->dev; |
| 2820 | |
| 2821 | dev_dbg(&dev->dev, "addr 0x%lx\n", info->io.addr_data); |
| 2822 | |
| 2823 | dev_set_drvdata(&dev->dev, info); |
| 2824 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2825 | rv = add_smi(info); |
| 2826 | if (rv) { |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2827 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2828 | return rv; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2829 | } |
| 2830 | |
| 2831 | return 0; |
| 2832 | } |
| 2833 | |
| 2834 | static int ipmi_parisc_remove(struct parisc_device *dev) |
| 2835 | { |
| 2836 | cleanup_one_si(dev_get_drvdata(&dev->dev)); |
| 2837 | return 0; |
| 2838 | } |
| 2839 | |
| 2840 | static struct parisc_device_id ipmi_parisc_tbl[] = { |
| 2841 | { HPHW_MC, HVERSION_REV_ANY_ID, 0x004, 0xC0 }, |
| 2842 | { 0, } |
| 2843 | }; |
| 2844 | |
| 2845 | static struct parisc_driver ipmi_parisc_driver = { |
| 2846 | .name = "ipmi", |
| 2847 | .id_table = ipmi_parisc_tbl, |
| 2848 | .probe = ipmi_parisc_probe, |
| 2849 | .remove = ipmi_parisc_remove, |
| 2850 | }; |
| 2851 | #endif /* CONFIG_PARISC */ |
| 2852 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2853 | static int wait_for_msg_done(struct smi_info *smi_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2855 | enum si_sm_result smi_result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2856 | |
| 2857 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2858 | for (;;) { |
Corey Minyard | c3e7e79 | 2005-11-07 01:00:02 -0800 | [diff] [blame] | 2859 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
| 2860 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 2861 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | smi_result = smi_info->handlers->event( |
Xie XiuQi | e21404d | 2014-01-24 14:00:52 -0600 | [diff] [blame] | 2863 | smi_info->si_sm, jiffies_to_usecs(1)); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2864 | } else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2865 | smi_result = smi_info->handlers->event( |
| 2866 | smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2867 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | break; |
| 2869 | } |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2870 | if (smi_result == SI_SM_HOSED) |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2871 | /* |
| 2872 | * We couldn't get the state machine to run, so whatever's at |
| 2873 | * the port is probably not an IPMI SMI interface. |
| 2874 | */ |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2875 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2876 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2877 | return 0; |
| 2878 | } |
| 2879 | |
| 2880 | static int try_get_dev_id(struct smi_info *smi_info) |
| 2881 | { |
| 2882 | unsigned char msg[2]; |
| 2883 | unsigned char *resp; |
| 2884 | unsigned long resp_len; |
| 2885 | int rv = 0; |
| 2886 | |
| 2887 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
| 2888 | if (!resp) |
| 2889 | return -ENOMEM; |
| 2890 | |
| 2891 | /* |
| 2892 | * Do a Get Device ID command, since it comes back with some |
| 2893 | * useful info. |
| 2894 | */ |
| 2895 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 2896 | msg[1] = IPMI_GET_DEVICE_ID_CMD; |
| 2897 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 2898 | |
| 2899 | rv = wait_for_msg_done(smi_info); |
| 2900 | if (rv) |
| 2901 | goto out; |
| 2902 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 2904 | resp, IPMI_MAX_MSG_LENGTH); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | |
Corey Minyard | d8c9861 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 2906 | /* Check and record info from the get device id, in case we need it. */ |
| 2907 | rv = ipmi_demangle_device_id(resp, resp_len, &smi_info->device_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | |
| 2909 | out: |
| 2910 | kfree(resp); |
| 2911 | return rv; |
| 2912 | } |
| 2913 | |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 2914 | /* |
| 2915 | * Some BMCs do not support clearing the receive irq bit in the global |
| 2916 | * enables (even if they don't support interrupts on the BMC). Check |
| 2917 | * for this and handle it properly. |
| 2918 | */ |
| 2919 | static void check_clr_rcv_irq(struct smi_info *smi_info) |
| 2920 | { |
| 2921 | unsigned char msg[3]; |
| 2922 | unsigned char *resp; |
| 2923 | unsigned long resp_len; |
| 2924 | int rv; |
| 2925 | |
| 2926 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
| 2927 | if (!resp) { |
| 2928 | printk(KERN_WARNING PFX "Out of memory allocating response for" |
| 2929 | " global enables command, cannot check recv irq bit" |
| 2930 | " handling.\n"); |
| 2931 | return; |
| 2932 | } |
| 2933 | |
| 2934 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 2935 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 2936 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 2937 | |
| 2938 | rv = wait_for_msg_done(smi_info); |
| 2939 | if (rv) { |
| 2940 | printk(KERN_WARNING PFX "Error getting response from get" |
| 2941 | " global enables command, cannot check recv irq bit" |
| 2942 | " handling.\n"); |
| 2943 | goto out; |
| 2944 | } |
| 2945 | |
| 2946 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 2947 | resp, IPMI_MAX_MSG_LENGTH); |
| 2948 | |
| 2949 | if (resp_len < 4 || |
| 2950 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 2951 | resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD || |
| 2952 | resp[2] != 0) { |
| 2953 | printk(KERN_WARNING PFX "Invalid return from get global" |
| 2954 | " enables command, cannot check recv irq bit" |
| 2955 | " handling.\n"); |
| 2956 | rv = -EINVAL; |
| 2957 | goto out; |
| 2958 | } |
| 2959 | |
| 2960 | if ((resp[3] & IPMI_BMC_RCV_MSG_INTR) == 0) |
| 2961 | /* Already clear, should work ok. */ |
| 2962 | goto out; |
| 2963 | |
| 2964 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 2965 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
| 2966 | msg[2] = resp[3] & ~IPMI_BMC_RCV_MSG_INTR; |
| 2967 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 2968 | |
| 2969 | rv = wait_for_msg_done(smi_info); |
| 2970 | if (rv) { |
| 2971 | printk(KERN_WARNING PFX "Error getting response from set" |
| 2972 | " global enables command, cannot check recv irq bit" |
| 2973 | " handling.\n"); |
| 2974 | goto out; |
| 2975 | } |
| 2976 | |
| 2977 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 2978 | resp, IPMI_MAX_MSG_LENGTH); |
| 2979 | |
| 2980 | if (resp_len < 3 || |
| 2981 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 2982 | resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) { |
| 2983 | printk(KERN_WARNING PFX "Invalid return from get global" |
| 2984 | " enables command, cannot check recv irq bit" |
| 2985 | " handling.\n"); |
| 2986 | rv = -EINVAL; |
| 2987 | goto out; |
| 2988 | } |
| 2989 | |
| 2990 | if (resp[2] != 0) { |
| 2991 | /* |
| 2992 | * An error when setting the event buffer bit means |
| 2993 | * clearing the bit is not supported. |
| 2994 | */ |
| 2995 | printk(KERN_WARNING PFX "The BMC does not support clearing" |
| 2996 | " the recv irq bit, compensating, but the BMC needs to" |
| 2997 | " be fixed.\n"); |
| 2998 | smi_info->cannot_clear_recv_irq_bit = true; |
| 2999 | } |
| 3000 | out: |
| 3001 | kfree(resp); |
| 3002 | } |
| 3003 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3004 | static int try_enable_event_buffer(struct smi_info *smi_info) |
| 3005 | { |
| 3006 | unsigned char msg[3]; |
| 3007 | unsigned char *resp; |
| 3008 | unsigned long resp_len; |
| 3009 | int rv = 0; |
| 3010 | |
| 3011 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
| 3012 | if (!resp) |
| 3013 | return -ENOMEM; |
| 3014 | |
| 3015 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 3016 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 3017 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 3018 | |
| 3019 | rv = wait_for_msg_done(smi_info); |
| 3020 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3021 | printk(KERN_WARNING PFX "Error getting response from get" |
| 3022 | " global enables command, the event buffer is not" |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3023 | " enabled.\n"); |
| 3024 | goto out; |
| 3025 | } |
| 3026 | |
| 3027 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 3028 | resp, IPMI_MAX_MSG_LENGTH); |
| 3029 | |
| 3030 | if (resp_len < 4 || |
| 3031 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 3032 | resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD || |
| 3033 | resp[2] != 0) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3034 | printk(KERN_WARNING PFX "Invalid return from get global" |
| 3035 | " enables command, cannot enable the event buffer.\n"); |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3036 | rv = -EINVAL; |
| 3037 | goto out; |
| 3038 | } |
| 3039 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3040 | if (resp[3] & IPMI_BMC_EVT_MSG_BUFF) { |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3041 | /* buffer is already enabled, nothing to do. */ |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3042 | smi_info->supports_event_msg_buff = true; |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3043 | goto out; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3044 | } |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3045 | |
| 3046 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 3047 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
| 3048 | msg[2] = resp[3] | IPMI_BMC_EVT_MSG_BUFF; |
| 3049 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 3050 | |
| 3051 | rv = wait_for_msg_done(smi_info); |
| 3052 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3053 | printk(KERN_WARNING PFX "Error getting response from set" |
| 3054 | " global, enables command, the event buffer is not" |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3055 | " enabled.\n"); |
| 3056 | goto out; |
| 3057 | } |
| 3058 | |
| 3059 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 3060 | resp, IPMI_MAX_MSG_LENGTH); |
| 3061 | |
| 3062 | if (resp_len < 3 || |
| 3063 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 3064 | resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3065 | printk(KERN_WARNING PFX "Invalid return from get global," |
| 3066 | "enables command, not enable the event buffer.\n"); |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3067 | rv = -EINVAL; |
| 3068 | goto out; |
| 3069 | } |
| 3070 | |
| 3071 | if (resp[2] != 0) |
| 3072 | /* |
| 3073 | * An error when setting the event buffer bit means |
| 3074 | * that the event buffer is not supported. |
| 3075 | */ |
| 3076 | rv = -ENOENT; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3077 | else |
| 3078 | smi_info->supports_event_msg_buff = true; |
| 3079 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3080 | out: |
| 3081 | kfree(resp); |
| 3082 | return rv; |
| 3083 | } |
| 3084 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3085 | static int smi_type_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3086 | { |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3087 | struct smi_info *smi = m->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3088 | |
Joe Perches | d6c5dc1 | 2015-02-17 11:10:56 -0800 | [diff] [blame] | 3089 | seq_printf(m, "%s\n", si_to_str[smi->si_type]); |
| 3090 | |
Joe Perches | 5e33cd0 | 2015-02-22 10:21:07 -0800 | [diff] [blame] | 3091 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3092 | } |
| 3093 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3094 | static int smi_type_proc_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3095 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 3096 | return single_open(file, smi_type_proc_show, PDE_DATA(inode)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3097 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3098 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3099 | static const struct file_operations smi_type_proc_ops = { |
| 3100 | .open = smi_type_proc_open, |
| 3101 | .read = seq_read, |
| 3102 | .llseek = seq_lseek, |
| 3103 | .release = single_release, |
| 3104 | }; |
| 3105 | |
| 3106 | static int smi_si_stats_proc_show(struct seq_file *m, void *v) |
| 3107 | { |
| 3108 | struct smi_info *smi = m->private; |
| 3109 | |
| 3110 | seq_printf(m, "interrupts_enabled: %d\n", |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3111 | smi->irq && !smi->interrupt_disabled); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3112 | seq_printf(m, "short_timeouts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3113 | smi_get_stat(smi, short_timeouts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3114 | seq_printf(m, "long_timeouts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3115 | smi_get_stat(smi, long_timeouts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3116 | seq_printf(m, "idles: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3117 | smi_get_stat(smi, idles)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3118 | seq_printf(m, "interrupts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3119 | smi_get_stat(smi, interrupts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3120 | seq_printf(m, "attentions: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3121 | smi_get_stat(smi, attentions)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3122 | seq_printf(m, "flag_fetches: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3123 | smi_get_stat(smi, flag_fetches)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3124 | seq_printf(m, "hosed_count: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3125 | smi_get_stat(smi, hosed_count)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3126 | seq_printf(m, "complete_transactions: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3127 | smi_get_stat(smi, complete_transactions)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3128 | seq_printf(m, "events: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3129 | smi_get_stat(smi, events)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3130 | seq_printf(m, "watchdog_pretimeouts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3131 | smi_get_stat(smi, watchdog_pretimeouts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3132 | seq_printf(m, "incoming_messages: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3133 | smi_get_stat(smi, incoming_messages)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3134 | return 0; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3135 | } |
| 3136 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3137 | static int smi_si_stats_proc_open(struct inode *inode, struct file *file) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3138 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 3139 | return single_open(file, smi_si_stats_proc_show, PDE_DATA(inode)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3140 | } |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3141 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3142 | static const struct file_operations smi_si_stats_proc_ops = { |
| 3143 | .open = smi_si_stats_proc_open, |
| 3144 | .read = seq_read, |
| 3145 | .llseek = seq_lseek, |
| 3146 | .release = single_release, |
| 3147 | }; |
| 3148 | |
| 3149 | static int smi_params_proc_show(struct seq_file *m, void *v) |
| 3150 | { |
| 3151 | struct smi_info *smi = m->private; |
| 3152 | |
Joe Perches | d6c5dc1 | 2015-02-17 11:10:56 -0800 | [diff] [blame] | 3153 | seq_printf(m, |
| 3154 | "%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n", |
| 3155 | si_to_str[smi->si_type], |
| 3156 | addr_space_to_str[smi->io.addr_type], |
| 3157 | smi->io.addr_data, |
| 3158 | smi->io.regspacing, |
| 3159 | smi->io.regsize, |
| 3160 | smi->io.regshift, |
| 3161 | smi->irq, |
| 3162 | smi->slave_addr); |
| 3163 | |
Joe Perches | 5e33cd0 | 2015-02-22 10:21:07 -0800 | [diff] [blame] | 3164 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3165 | } |
| 3166 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3167 | static int smi_params_proc_open(struct inode *inode, struct file *file) |
| 3168 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 3169 | return single_open(file, smi_params_proc_show, PDE_DATA(inode)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3170 | } |
| 3171 | |
| 3172 | static const struct file_operations smi_params_proc_ops = { |
| 3173 | .open = smi_params_proc_open, |
| 3174 | .read = seq_read, |
| 3175 | .llseek = seq_lseek, |
| 3176 | .release = single_release, |
| 3177 | }; |
| 3178 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3179 | /* |
| 3180 | * oem_data_avail_to_receive_msg_avail |
| 3181 | * @info - smi_info structure with msg_flags set |
| 3182 | * |
| 3183 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL |
| 3184 | * Returns 1 indicating need to re-run handle_flags(). |
| 3185 | */ |
| 3186 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) |
| 3187 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3188 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3189 | RECEIVE_MSG_AVAIL); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3190 | return 1; |
| 3191 | } |
| 3192 | |
| 3193 | /* |
| 3194 | * setup_dell_poweredge_oem_data_handler |
| 3195 | * @info - smi_info.device_id must be populated |
| 3196 | * |
| 3197 | * Systems that match, but have firmware version < 1.40 may assert |
| 3198 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that |
| 3199 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL |
| 3200 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags |
| 3201 | * as RECEIVE_MSG_AVAIL instead. |
| 3202 | * |
| 3203 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* |
| 3204 | * assert the OEM[012] bits, and if it did, the driver would have to |
| 3205 | * change to handle that properly, we don't actually check for the |
| 3206 | * firmware version. |
| 3207 | * Device ID = 0x20 BMC on PowerEdge 8G servers |
| 3208 | * Device Revision = 0x80 |
| 3209 | * Firmware Revision1 = 0x01 BMC version 1.40 |
| 3210 | * Firmware Revision2 = 0x40 BCD encoded |
| 3211 | * IPMI Version = 0x51 IPMI 1.5 |
| 3212 | * Manufacturer ID = A2 02 00 Dell IANA |
| 3213 | * |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3214 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
| 3215 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. |
| 3216 | * |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3217 | */ |
| 3218 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 |
| 3219 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 |
| 3220 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3221 | #define DELL_IANA_MFR_ID 0x0002a2 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3222 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
| 3223 | { |
| 3224 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3225 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3226 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
| 3227 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3228 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3229 | smi_info->oem_data_avail_handler = |
| 3230 | oem_data_avail_to_receive_msg_avail; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3231 | } else if (ipmi_version_major(id) < 1 || |
| 3232 | (ipmi_version_major(id) == 1 && |
| 3233 | ipmi_version_minor(id) < 5)) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3234 | smi_info->oem_data_avail_handler = |
| 3235 | oem_data_avail_to_receive_msg_avail; |
| 3236 | } |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3237 | } |
| 3238 | } |
| 3239 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3240 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
| 3241 | static void return_hosed_msg_badsize(struct smi_info *smi_info) |
| 3242 | { |
| 3243 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 3244 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 3245 | /* Make it a response */ |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3246 | msg->rsp[0] = msg->data[0] | 4; |
| 3247 | msg->rsp[1] = msg->data[1]; |
| 3248 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; |
| 3249 | msg->rsp_size = 3; |
| 3250 | smi_info->curr_msg = NULL; |
| 3251 | deliver_recv_msg(smi_info, msg); |
| 3252 | } |
| 3253 | |
| 3254 | /* |
| 3255 | * dell_poweredge_bt_xaction_handler |
| 3256 | * @info - smi_info.device_id must be populated |
| 3257 | * |
| 3258 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will |
| 3259 | * not respond to a Get SDR command if the length of the data |
| 3260 | * requested is exactly 0x3A, which leads to command timeouts and no |
| 3261 | * data returned. This intercepts such commands, and causes userspace |
| 3262 | * callers to try again with a different-sized buffer, which succeeds. |
| 3263 | */ |
| 3264 | |
| 3265 | #define STORAGE_NETFN 0x0A |
| 3266 | #define STORAGE_CMD_GET_SDR 0x23 |
| 3267 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, |
| 3268 | unsigned long unused, |
| 3269 | void *in) |
| 3270 | { |
| 3271 | struct smi_info *smi_info = in; |
| 3272 | unsigned char *data = smi_info->curr_msg->data; |
| 3273 | unsigned int size = smi_info->curr_msg->data_size; |
| 3274 | if (size >= 8 && |
| 3275 | (data[0]>>2) == STORAGE_NETFN && |
| 3276 | data[1] == STORAGE_CMD_GET_SDR && |
| 3277 | data[7] == 0x3A) { |
| 3278 | return_hosed_msg_badsize(smi_info); |
| 3279 | return NOTIFY_STOP; |
| 3280 | } |
| 3281 | return NOTIFY_DONE; |
| 3282 | } |
| 3283 | |
| 3284 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { |
| 3285 | .notifier_call = dell_poweredge_bt_xaction_handler, |
| 3286 | }; |
| 3287 | |
| 3288 | /* |
| 3289 | * setup_dell_poweredge_bt_xaction_handler |
| 3290 | * @info - smi_info.device_id must be filled in already |
| 3291 | * |
| 3292 | * Fills in smi_info.device_id.start_transaction_pre_hook |
| 3293 | * when we know what function to use there. |
| 3294 | */ |
| 3295 | static void |
| 3296 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) |
| 3297 | { |
| 3298 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3299 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3300 | smi_info->si_type == SI_BT) |
| 3301 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); |
| 3302 | } |
| 3303 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3304 | /* |
| 3305 | * setup_oem_data_handler |
| 3306 | * @info - smi_info.device_id must be filled in already |
| 3307 | * |
| 3308 | * Fills in smi_info.device_id.oem_data_available_handler |
| 3309 | * when we know what function to use there. |
| 3310 | */ |
| 3311 | |
| 3312 | static void setup_oem_data_handler(struct smi_info *smi_info) |
| 3313 | { |
| 3314 | setup_dell_poweredge_oem_data_handler(smi_info); |
| 3315 | } |
| 3316 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3317 | static void setup_xaction_handlers(struct smi_info *smi_info) |
| 3318 | { |
| 3319 | setup_dell_poweredge_bt_xaction_handler(smi_info); |
| 3320 | } |
| 3321 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3322 | static inline void wait_for_timer_and_thread(struct smi_info *smi_info) |
| 3323 | { |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3324 | if (smi_info->thread != NULL) |
| 3325 | kthread_stop(smi_info->thread); |
| 3326 | if (smi_info->timer_running) |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3327 | del_timer_sync(&smi_info->si_timer); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3328 | } |
| 3329 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame^] | 3330 | static const struct ipmi_default_vals |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3331 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3332 | int type; |
| 3333 | int port; |
Randy Dunlap | 7420884 | 2006-04-18 22:21:52 -0700 | [diff] [blame] | 3334 | } ipmi_defaults[] = |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3335 | { |
| 3336 | { .type = SI_KCS, .port = 0xca2 }, |
| 3337 | { .type = SI_SMIC, .port = 0xca9 }, |
| 3338 | { .type = SI_BT, .port = 0xe4 }, |
| 3339 | { .port = 0 } |
| 3340 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3341 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 3342 | static void default_find_bmc(void) |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3343 | { |
| 3344 | struct smi_info *info; |
| 3345 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3346 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3347 | for (i = 0; ; i++) { |
| 3348 | if (!ipmi_defaults[i].port) |
| 3349 | break; |
Kumar Gala | 68e1ee6 | 2008-09-22 14:41:31 -0700 | [diff] [blame] | 3350 | #ifdef CONFIG_PPC |
Christian Krafft | 4ff31d7 | 2007-03-05 00:30:48 -0800 | [diff] [blame] | 3351 | if (check_legacy_ioport(ipmi_defaults[i].port)) |
| 3352 | continue; |
| 3353 | #endif |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 3354 | info = smi_info_alloc(); |
Andrew Morton | a09f485 | 2008-08-20 14:09:14 -0700 | [diff] [blame] | 3355 | if (!info) |
| 3356 | return; |
Christian Krafft | 4ff31d7 | 2007-03-05 00:30:48 -0800 | [diff] [blame] | 3357 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 3358 | info->addr_source = SI_DEFAULT; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3359 | |
| 3360 | info->si_type = ipmi_defaults[i].type; |
| 3361 | info->io_setup = port_setup; |
| 3362 | info->io.addr_data = ipmi_defaults[i].port; |
| 3363 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 3364 | |
| 3365 | info->io.addr = NULL; |
| 3366 | info->io.regspacing = DEFAULT_REGSPACING; |
| 3367 | info->io.regsize = DEFAULT_REGSPACING; |
| 3368 | info->io.regshift = 0; |
| 3369 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3370 | if (add_smi(info) == 0) { |
| 3371 | if ((try_smi_init(info)) == 0) { |
| 3372 | /* Found one... */ |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3373 | printk(KERN_INFO PFX "Found default %s" |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3374 | " state machine at %s address 0x%lx\n", |
| 3375 | si_to_str[info->si_type], |
| 3376 | addr_space_to_str[info->io.addr_type], |
| 3377 | info->io.addr_data); |
| 3378 | } else |
| 3379 | cleanup_one_si(info); |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 3380 | } else { |
| 3381 | kfree(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3382 | } |
| 3383 | } |
| 3384 | } |
| 3385 | |
| 3386 | static int is_new_interface(struct smi_info *info) |
| 3387 | { |
| 3388 | struct smi_info *e; |
| 3389 | |
| 3390 | list_for_each_entry(e, &smi_infos, link) { |
| 3391 | if (e->io.addr_type != info->io.addr_type) |
| 3392 | continue; |
| 3393 | if (e->io.addr_data == info->io.addr_data) |
| 3394 | return 0; |
| 3395 | } |
| 3396 | |
| 3397 | return 1; |
| 3398 | } |
| 3399 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3400 | static int add_smi(struct smi_info *new_smi) |
| 3401 | { |
| 3402 | int rv = 0; |
| 3403 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3404 | printk(KERN_INFO PFX "Adding %s-specified %s state machine", |
Corey Minyard | 7e50387 | 2014-10-09 07:20:32 -0500 | [diff] [blame] | 3405 | ipmi_addr_src_to_str(new_smi->addr_source), |
| 3406 | si_to_str[new_smi->si_type]); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3407 | mutex_lock(&smi_infos_lock); |
| 3408 | if (!is_new_interface(new_smi)) { |
Yinghai Lu | 7bb671e | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 3409 | printk(KERN_CONT " duplicate interface\n"); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3410 | rv = -EBUSY; |
| 3411 | goto out_err; |
| 3412 | } |
| 3413 | |
| 3414 | printk(KERN_CONT "\n"); |
| 3415 | |
| 3416 | /* So we know not to free it unless we have allocated one. */ |
| 3417 | new_smi->intf = NULL; |
| 3418 | new_smi->si_sm = NULL; |
| 3419 | new_smi->handlers = NULL; |
| 3420 | |
| 3421 | list_add_tail(&new_smi->link, &smi_infos); |
| 3422 | |
| 3423 | out_err: |
| 3424 | mutex_unlock(&smi_infos_lock); |
| 3425 | return rv; |
| 3426 | } |
| 3427 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3428 | static int try_smi_init(struct smi_info *new_smi) |
| 3429 | { |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3430 | int rv = 0; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3431 | int i; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3432 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3433 | printk(KERN_INFO PFX "Trying %s-specified %s state" |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 3434 | " machine at %s address 0x%lx, slave address 0x%x," |
| 3435 | " irq %d\n", |
Corey Minyard | 7e50387 | 2014-10-09 07:20:32 -0500 | [diff] [blame] | 3436 | ipmi_addr_src_to_str(new_smi->addr_source), |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 3437 | si_to_str[new_smi->si_type], |
| 3438 | addr_space_to_str[new_smi->io.addr_type], |
| 3439 | new_smi->io.addr_data, |
| 3440 | new_smi->slave_addr, new_smi->irq); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3441 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3442 | switch (new_smi->si_type) { |
| 3443 | case SI_KCS: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3444 | new_smi->handlers = &kcs_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3445 | break; |
| 3446 | |
| 3447 | case SI_SMIC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3448 | new_smi->handlers = &smic_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3449 | break; |
| 3450 | |
| 3451 | case SI_BT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3452 | new_smi->handlers = &bt_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3453 | break; |
| 3454 | |
| 3455 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3456 | /* No support for anything else yet. */ |
| 3457 | rv = -EIO; |
| 3458 | goto out_err; |
| 3459 | } |
| 3460 | |
| 3461 | /* Allocate the state machine's data and initialize it. */ |
| 3462 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3463 | if (!new_smi->si_sm) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3464 | printk(KERN_ERR PFX |
| 3465 | "Could not allocate state machine memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3466 | rv = -ENOMEM; |
| 3467 | goto out_err; |
| 3468 | } |
| 3469 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, |
| 3470 | &new_smi->io); |
| 3471 | |
| 3472 | /* Now that we know the I/O size, we can set up the I/O. */ |
| 3473 | rv = new_smi->io_setup(new_smi); |
| 3474 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3475 | printk(KERN_ERR PFX "Could not set up I/O space\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3476 | goto out_err; |
| 3477 | } |
| 3478 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3479 | /* Do low-level detection first. */ |
| 3480 | if (new_smi->handlers->detect(new_smi->si_sm)) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3481 | if (new_smi->addr_source) |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3482 | printk(KERN_INFO PFX "Interface detection failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3483 | rv = -ENODEV; |
| 3484 | goto out_err; |
| 3485 | } |
| 3486 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3487 | /* |
| 3488 | * Attempt a get device id command. If it fails, we probably |
| 3489 | * don't have a BMC here. |
| 3490 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3491 | rv = try_get_dev_id(new_smi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3492 | if (rv) { |
| 3493 | if (new_smi->addr_source) |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3494 | printk(KERN_INFO PFX "There appears to be no BMC" |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3495 | " at this location\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3496 | goto out_err; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3497 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3498 | |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3499 | check_clr_rcv_irq(new_smi); |
| 3500 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3501 | setup_oem_data_handler(new_smi); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3502 | setup_xaction_handlers(new_smi); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3503 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3504 | new_smi->waiting_msg = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3505 | new_smi->curr_msg = NULL; |
| 3506 | atomic_set(&new_smi->req_events, 0); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3507 | new_smi->run_to_completion = false; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3508 | for (i = 0; i < SI_NUM_STATS; i++) |
| 3509 | atomic_set(&new_smi->stats[i], 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3510 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3511 | new_smi->interrupt_disabled = true; |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 3512 | atomic_set(&new_smi->need_watch, 0); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3513 | new_smi->intf_num = smi_num; |
| 3514 | smi_num++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3515 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3516 | rv = try_enable_event_buffer(new_smi); |
| 3517 | if (rv == 0) |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3518 | new_smi->has_event_buffer = true; |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3519 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3520 | /* |
| 3521 | * Start clearing the flags before we enable interrupts or the |
| 3522 | * timer to avoid racing with the timer. |
| 3523 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3524 | start_clear_flags(new_smi); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3525 | |
| 3526 | /* |
| 3527 | * IRQ is defined to be set when non-zero. req_events will |
| 3528 | * cause a global flags check that will enable interrupts. |
| 3529 | */ |
| 3530 | if (new_smi->irq) { |
| 3531 | new_smi->interrupt_disabled = false; |
| 3532 | atomic_set(&new_smi->req_events, 1); |
| 3533 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3534 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3535 | if (!new_smi->dev) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3536 | /* |
| 3537 | * If we don't already have a device from something |
| 3538 | * else (like PCI), then register a new one. |
| 3539 | */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3540 | new_smi->pdev = platform_device_alloc("ipmi_si", |
| 3541 | new_smi->intf_num); |
Corey Minyard | 8b32b5d | 2009-04-21 12:24:02 -0700 | [diff] [blame] | 3542 | if (!new_smi->pdev) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3543 | printk(KERN_ERR PFX |
| 3544 | "Unable to allocate platform device\n"); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3545 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3546 | } |
| 3547 | new_smi->dev = &new_smi->pdev->dev; |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 3548 | new_smi->dev->driver = &ipmi_driver.driver; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3549 | |
Zhang, Yanmin | b48f545 | 2006-11-16 01:19:08 -0800 | [diff] [blame] | 3550 | rv = platform_device_add(new_smi->pdev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3551 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3552 | printk(KERN_ERR PFX |
| 3553 | "Unable to register system interface device:" |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3554 | " %d\n", |
| 3555 | rv); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3556 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3557 | } |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3558 | new_smi->dev_registered = true; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3559 | } |
| 3560 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3561 | rv = ipmi_register_smi(&handlers, |
| 3562 | new_smi, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3563 | &new_smi->device_id, |
| 3564 | new_smi->dev, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3565 | new_smi->slave_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3566 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3567 | dev_err(new_smi->dev, "Unable to register device: error %d\n", |
| 3568 | rv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3569 | goto out_err_stop_timer; |
| 3570 | } |
| 3571 | |
| 3572 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3573 | &smi_type_proc_ops, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3574 | new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3575 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3576 | dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3577 | goto out_err_stop_timer; |
| 3578 | } |
| 3579 | |
| 3580 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3581 | &smi_si_stats_proc_ops, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3582 | new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3583 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3584 | dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3585 | goto out_err_stop_timer; |
| 3586 | } |
| 3587 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3588 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3589 | &smi_params_proc_ops, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3590 | new_smi); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3591 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3592 | dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3593 | goto out_err_stop_timer; |
| 3594 | } |
| 3595 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3596 | dev_info(new_smi->dev, "IPMI %s interface initialized\n", |
| 3597 | si_to_str[new_smi->si_type]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3598 | |
| 3599 | return 0; |
| 3600 | |
| 3601 | out_err_stop_timer: |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3602 | wait_for_timer_and_thread(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3603 | |
| 3604 | out_err: |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3605 | new_smi->interrupt_disabled = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3606 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3607 | if (new_smi->intf) { |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3608 | ipmi_smi_t intf = new_smi->intf; |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3609 | new_smi->intf = NULL; |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3610 | ipmi_unregister_smi(intf); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3611 | } |
| 3612 | |
| 3613 | if (new_smi->irq_cleanup) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3614 | new_smi->irq_cleanup(new_smi); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3615 | new_smi->irq_cleanup = NULL; |
| 3616 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3617 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3618 | /* |
| 3619 | * Wait until we know that we are out of any interrupt |
| 3620 | * handlers might have been running before we freed the |
| 3621 | * interrupt. |
| 3622 | */ |
Paul E. McKenney | fbd568a3e | 2005-05-01 08:59:04 -0700 | [diff] [blame] | 3623 | synchronize_sched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3624 | |
| 3625 | if (new_smi->si_sm) { |
| 3626 | if (new_smi->handlers) |
| 3627 | new_smi->handlers->cleanup(new_smi->si_sm); |
| 3628 | kfree(new_smi->si_sm); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3629 | new_smi->si_sm = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3630 | } |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3631 | if (new_smi->addr_source_cleanup) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3632 | new_smi->addr_source_cleanup(new_smi); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3633 | new_smi->addr_source_cleanup = NULL; |
| 3634 | } |
| 3635 | if (new_smi->io_cleanup) { |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 3636 | new_smi->io_cleanup(new_smi); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3637 | new_smi->io_cleanup = NULL; |
| 3638 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3639 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3640 | if (new_smi->dev_registered) { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3641 | platform_device_unregister(new_smi->pdev); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3642 | new_smi->dev_registered = false; |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3643 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3645 | return rv; |
| 3646 | } |
| 3647 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 3648 | static int init_ipmi_si(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3649 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3650 | int i; |
| 3651 | char *str; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3652 | int rv; |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3653 | struct smi_info *e; |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3654 | enum ipmi_addr_src type = SI_INVALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3655 | |
| 3656 | if (initialized) |
| 3657 | return 0; |
| 3658 | initialized = 1; |
| 3659 | |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 3660 | if (si_tryplatform) { |
| 3661 | rv = platform_driver_register(&ipmi_driver); |
| 3662 | if (rv) { |
| 3663 | printk(KERN_ERR PFX "Unable to register " |
| 3664 | "driver: %d\n", rv); |
| 3665 | return rv; |
| 3666 | } |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3667 | } |
| 3668 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3669 | /* Parse out the si_type string into its components. */ |
| 3670 | str = si_type_str; |
| 3671 | if (*str != '\0') { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3672 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3673 | si_type[i] = str; |
| 3674 | str = strchr(str, ','); |
| 3675 | if (str) { |
| 3676 | *str = '\0'; |
| 3677 | str++; |
| 3678 | } else { |
| 3679 | break; |
| 3680 | } |
| 3681 | } |
| 3682 | } |
| 3683 | |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3684 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3685 | |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3686 | /* If the user gave us a device, they presumably want us to use it */ |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 3687 | if (!hardcode_find_bmc()) |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3688 | return 0; |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3689 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3690 | #ifdef CONFIG_PCI |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 3691 | if (si_trypci) { |
| 3692 | rv = pci_register_driver(&ipmi_pci_driver); |
| 3693 | if (rv) |
| 3694 | printk(KERN_ERR PFX "Unable to register " |
| 3695 | "PCI driver: %d\n", rv); |
| 3696 | else |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3697 | pci_registered = true; |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 3698 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3699 | #endif |
| 3700 | |
Matthew Garrett | 754d453 | 2010-05-26 14:43:47 -0700 | [diff] [blame] | 3701 | #ifdef CONFIG_DMI |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 3702 | if (si_trydmi) |
| 3703 | dmi_find_bmc(); |
Matthew Garrett | 754d453 | 2010-05-26 14:43:47 -0700 | [diff] [blame] | 3704 | #endif |
| 3705 | |
| 3706 | #ifdef CONFIG_ACPI |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 3707 | if (si_tryacpi) |
| 3708 | spmi_find_bmc(); |
Matthew Garrett | 754d453 | 2010-05-26 14:43:47 -0700 | [diff] [blame] | 3709 | #endif |
| 3710 | |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 3711 | #ifdef CONFIG_PARISC |
| 3712 | register_parisc_driver(&ipmi_parisc_driver); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3713 | parisc_registered = true; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 3714 | /* poking PC IO addresses will crash machine, don't do it */ |
| 3715 | si_trydefaults = 0; |
| 3716 | #endif |
| 3717 | |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3718 | /* We prefer devices with interrupts, but in the case of a machine |
| 3719 | with multiple BMCs we assume that there will be several instances |
| 3720 | of a given type so if we succeed in registering a type then also |
| 3721 | try to register everything else of the same type */ |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3722 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3723 | mutex_lock(&smi_infos_lock); |
| 3724 | list_for_each_entry(e, &smi_infos, link) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3725 | /* Try to register a device if it has an IRQ and we either |
| 3726 | haven't successfully registered a device yet or this |
| 3727 | device has the same type as one we successfully registered */ |
| 3728 | if (e->irq && (!type || e->addr_source == type)) { |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3729 | if (!try_smi_init(e)) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3730 | type = e->addr_source; |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3731 | } |
| 3732 | } |
| 3733 | } |
| 3734 | |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3735 | /* type will only have been set if we successfully registered an si */ |
| 3736 | if (type) { |
| 3737 | mutex_unlock(&smi_infos_lock); |
| 3738 | return 0; |
| 3739 | } |
| 3740 | |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3741 | /* Fall back to the preferred device */ |
| 3742 | |
| 3743 | list_for_each_entry(e, &smi_infos, link) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3744 | if (!e->irq && (!type || e->addr_source == type)) { |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3745 | if (!try_smi_init(e)) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3746 | type = e->addr_source; |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3747 | } |
| 3748 | } |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3749 | } |
| 3750 | mutex_unlock(&smi_infos_lock); |
| 3751 | |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3752 | if (type) |
| 3753 | return 0; |
| 3754 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3755 | if (si_trydefaults) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3756 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3757 | if (list_empty(&smi_infos)) { |
| 3758 | /* No BMC was found, try defaults. */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3759 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3760 | default_find_bmc(); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3761 | } else |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3762 | mutex_unlock(&smi_infos_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3763 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3764 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3765 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3766 | if (unload_when_empty && list_empty(&smi_infos)) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3767 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | d247852 | 2011-02-10 16:08:38 -0600 | [diff] [blame] | 3768 | cleanup_ipmi_si(); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3769 | printk(KERN_WARNING PFX |
| 3770 | "Unable to find any System Interface(s)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3771 | return -ENODEV; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3772 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3773 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3774 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3775 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3776 | } |
| 3777 | module_init(init_ipmi_si); |
| 3778 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3779 | static void cleanup_one_si(struct smi_info *to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3780 | { |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3781 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3782 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3783 | if (!to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3784 | return; |
| 3785 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3786 | if (to_clean->intf) { |
| 3787 | ipmi_smi_t intf = to_clean->intf; |
| 3788 | |
| 3789 | to_clean->intf = NULL; |
| 3790 | rv = ipmi_unregister_smi(intf); |
| 3791 | if (rv) { |
| 3792 | pr_err(PFX "Unable to unregister device: errno=%d\n", |
| 3793 | rv); |
| 3794 | } |
| 3795 | } |
| 3796 | |
Takao Indoh | 567eded | 2014-10-06 14:17:53 -0500 | [diff] [blame] | 3797 | if (to_clean->dev) |
| 3798 | dev_set_drvdata(to_clean->dev, NULL); |
| 3799 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3800 | list_del(&to_clean->link); |
| 3801 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3802 | /* |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3803 | * Make sure that interrupts, the timer and the thread are |
| 3804 | * stopped and will not run again. |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3805 | */ |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3806 | if (to_clean->irq_cleanup) |
| 3807 | to_clean->irq_cleanup(to_clean); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3808 | wait_for_timer_and_thread(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3809 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3810 | /* |
| 3811 | * Timeouts are stopped, now make sure the interrupts are off |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3812 | * in the BMC. Note that timers and CPU interrupts are off, |
| 3813 | * so no need for locks. |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3814 | */ |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3815 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3816 | poll(to_clean); |
| 3817 | schedule_timeout_uninterruptible(1); |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3818 | } |
| 3819 | disable_si_irq(to_clean); |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3820 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
| 3821 | poll(to_clean); |
| 3822 | schedule_timeout_uninterruptible(1); |
| 3823 | } |
| 3824 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3825 | if (to_clean->handlers) |
| 3826 | to_clean->handlers->cleanup(to_clean->si_sm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3827 | |
| 3828 | kfree(to_clean->si_sm); |
| 3829 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3830 | if (to_clean->addr_source_cleanup) |
| 3831 | to_clean->addr_source_cleanup(to_clean); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 3832 | if (to_clean->io_cleanup) |
| 3833 | to_clean->io_cleanup(to_clean); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3834 | |
| 3835 | if (to_clean->dev_registered) |
| 3836 | platform_device_unregister(to_clean->pdev); |
| 3837 | |
| 3838 | kfree(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3839 | } |
| 3840 | |
Sergey Senozhatsky | 0dcf334 | 2011-03-23 16:42:54 -0700 | [diff] [blame] | 3841 | static void cleanup_ipmi_si(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3842 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3843 | struct smi_info *e, *tmp_e; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3844 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3845 | if (!initialized) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3846 | return; |
| 3847 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3848 | #ifdef CONFIG_PCI |
Matthew Garrett | 5648028 | 2010-06-29 15:05:29 -0700 | [diff] [blame] | 3849 | if (pci_registered) |
| 3850 | pci_unregister_driver(&ipmi_pci_driver); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3851 | #endif |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 3852 | #ifdef CONFIG_PARISC |
| 3853 | if (parisc_registered) |
| 3854 | unregister_parisc_driver(&ipmi_parisc_driver); |
| 3855 | #endif |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3856 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 3857 | platform_driver_unregister(&ipmi_driver); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 3858 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3859 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3860 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
| 3861 | cleanup_one_si(e); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3862 | mutex_unlock(&smi_infos_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3863 | } |
| 3864 | module_exit(cleanup_ipmi_si); |
| 3865 | |
| 3866 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3867 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3868 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT" |
| 3869 | " system interfaces."); |