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> |
Tony Camuso | 58c9d61 | 2016-02-02 13:57:24 -0500 | [diff] [blame] | 71 | #include <linux/acpi.h> |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 72 | |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 73 | #ifdef CONFIG_PARISC |
| 74 | #include <asm/hardware.h> /* for register_parisc_driver() stuff */ |
| 75 | #include <asm/parisc-device.h> |
| 76 | #endif |
| 77 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 78 | #define PFX "ipmi_si: " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
| 80 | /* Measure times between events in the driver. */ |
| 81 | #undef DEBUG_TIMING |
| 82 | |
| 83 | /* Call every 10 ms. */ |
| 84 | #define SI_TIMEOUT_TIME_USEC 10000 |
| 85 | #define SI_USEC_PER_JIFFY (1000000/HZ) |
| 86 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) |
| 87 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 88 | short timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
| 90 | enum si_intf_state { |
| 91 | SI_NORMAL, |
| 92 | SI_GETTING_FLAGS, |
| 93 | SI_GETTING_EVENTS, |
| 94 | SI_CLEARING_FLAGS, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | SI_GETTING_MESSAGES, |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 96 | SI_CHECKING_ENABLES, |
| 97 | SI_SETTING_ENABLES |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | /* FIXME - add watchdog stuff. */ |
| 99 | }; |
| 100 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 101 | /* Some BT-specific defines we need here. */ |
| 102 | #define IPMI_BT_INTMASK_REG 2 |
| 103 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 |
| 104 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | enum si_type { |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 107 | SI_KCS, SI_SMIC, SI_BT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | }; |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 109 | |
| 110 | static const char * const si_to_str[] = { "kcs", "smic", "bt" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 112 | #define DEVICE_NAME "ipmi_si" |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 113 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 114 | static struct platform_driver ipmi_driver; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 115 | |
| 116 | /* |
| 117 | * Indexes into stats[] in smi_info below. |
| 118 | */ |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 119 | enum si_stat_indexes { |
| 120 | /* |
| 121 | * Number of times the driver requested a timer while an operation |
| 122 | * was in progress. |
| 123 | */ |
| 124 | SI_STAT_short_timeouts = 0, |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 125 | |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 126 | /* |
| 127 | * Number of times the driver requested a timer while nothing was in |
| 128 | * progress. |
| 129 | */ |
| 130 | SI_STAT_long_timeouts, |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 131 | |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 132 | /* Number of times the interface was idle while being polled. */ |
| 133 | SI_STAT_idles, |
| 134 | |
| 135 | /* Number of interrupts the driver handled. */ |
| 136 | SI_STAT_interrupts, |
| 137 | |
| 138 | /* Number of time the driver got an ATTN from the hardware. */ |
| 139 | SI_STAT_attentions, |
| 140 | |
| 141 | /* Number of times the driver requested flags from the hardware. */ |
| 142 | SI_STAT_flag_fetches, |
| 143 | |
| 144 | /* Number of times the hardware didn't follow the state machine. */ |
| 145 | SI_STAT_hosed_count, |
| 146 | |
| 147 | /* Number of completed messages. */ |
| 148 | SI_STAT_complete_transactions, |
| 149 | |
| 150 | /* Number of IPMI events received from the hardware. */ |
| 151 | SI_STAT_events, |
| 152 | |
| 153 | /* Number of watchdog pretimeouts. */ |
| 154 | SI_STAT_watchdog_pretimeouts, |
| 155 | |
Adam Buchbinder | b3834be | 2012-09-19 21:48:02 -0400 | [diff] [blame] | 156 | /* Number of asynchronous messages received. */ |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 157 | SI_STAT_incoming_messages, |
| 158 | |
| 159 | |
| 160 | /* This *must* remain last, add new values above this. */ |
| 161 | SI_NUM_STATS |
| 162 | }; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 163 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 164 | struct smi_info { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 165 | int intf_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | ipmi_smi_t intf; |
| 167 | struct si_sm_data *si_sm; |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 168 | const struct si_sm_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | enum si_type si_type; |
| 170 | spinlock_t si_lock; |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 171 | struct ipmi_smi_msg *waiting_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | struct ipmi_smi_msg *curr_msg; |
| 173 | enum si_intf_state si_state; |
| 174 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 175 | /* |
| 176 | * Used to handle the various types of I/O that can occur with |
| 177 | * IPMI |
| 178 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | struct si_sm_io io; |
| 180 | int (*io_setup)(struct smi_info *info); |
| 181 | void (*io_cleanup)(struct smi_info *info); |
| 182 | int (*irq_setup)(struct smi_info *info); |
| 183 | void (*irq_cleanup)(struct smi_info *info); |
| 184 | unsigned int io_size; |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 185 | enum ipmi_addr_src addr_source; /* ACPI, PCI, SMBIOS, hardcode, etc. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 186 | void (*addr_source_cleanup)(struct smi_info *info); |
| 187 | void *addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 189 | /* |
| 190 | * Per-OEM handler, called from handle_flags(). Returns 1 |
| 191 | * when handle_flags() needs to be re-run or 0 indicating it |
| 192 | * set si_state itself. |
| 193 | */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 194 | int (*oem_data_avail_handler)(struct smi_info *smi_info); |
| 195 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 196 | /* |
| 197 | * Flags from the last GET_MSG_FLAGS command, used when an ATTN |
| 198 | * is set to hold the flags until we are done handling everything |
| 199 | * from the flags. |
| 200 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | #define RECEIVE_MSG_AVAIL 0x01 |
| 202 | #define EVENT_MSG_BUFFER_FULL 0x02 |
| 203 | #define WDT_PRE_TIMEOUT_INT 0x08 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 204 | #define OEM0_DATA_AVAIL 0x20 |
| 205 | #define OEM1_DATA_AVAIL 0x40 |
| 206 | #define OEM2_DATA_AVAIL 0x80 |
| 207 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 208 | OEM1_DATA_AVAIL | \ |
| 209 | OEM2_DATA_AVAIL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | unsigned char msg_flags; |
| 211 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 212 | /* Does the BMC have an event buffer? */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 213 | bool has_event_buffer; |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 214 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 215 | /* |
| 216 | * If set to true, this will request events the next time the |
| 217 | * state machine is idle. |
| 218 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | atomic_t req_events; |
| 220 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 221 | /* |
| 222 | * If true, run the state machine to completion on every send |
| 223 | * call. Generally used after a panic to make sure stuff goes |
| 224 | * out. |
| 225 | */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 226 | bool run_to_completion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
| 228 | /* The I/O port of an SI interface. */ |
| 229 | int port; |
| 230 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 231 | /* |
| 232 | * The space between start addresses of the two ports. For |
| 233 | * instance, if the first port is 0xca2 and the spacing is 4, then |
| 234 | * the second port is 0xca6. |
| 235 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | unsigned int spacing; |
| 237 | |
| 238 | /* zero if no irq; */ |
| 239 | int irq; |
| 240 | |
| 241 | /* The timer for this si. */ |
| 242 | struct timer_list si_timer; |
| 243 | |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 244 | /* This flag is set, if the timer can be set */ |
| 245 | bool timer_can_start; |
| 246 | |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 247 | /* This flag is set, if the timer is running (timer_pending() isn't enough) */ |
| 248 | bool timer_running; |
| 249 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | /* The time (in jiffies) the last timeout occurred at. */ |
| 251 | unsigned long last_timeout_jiffies; |
| 252 | |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 253 | /* Are we waiting for the events, pretimeouts, received msgs? */ |
| 254 | atomic_t need_watch; |
| 255 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 256 | /* |
| 257 | * The driver will disable interrupts when it gets into a |
| 258 | * situation where it cannot handle messages due to lack of |
| 259 | * memory. Once that situation clears up, it will re-enable |
| 260 | * interrupts. |
| 261 | */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 262 | bool interrupt_disabled; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 264 | /* |
| 265 | * Does the BMC support events? |
| 266 | */ |
| 267 | bool supports_event_msg_buff; |
| 268 | |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 269 | /* |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 270 | * Can we disable interrupts the global enables receive irq |
| 271 | * bit? There are currently two forms of brokenness, some |
| 272 | * systems cannot disable the bit (which is technically within |
| 273 | * the spec but a bad idea) and some systems have the bit |
| 274 | * forced to zero even though interrupts work (which is |
| 275 | * clearly outside the spec). The next bool tells which form |
| 276 | * of brokenness is present. |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 277 | */ |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 278 | bool cannot_disable_irq; |
| 279 | |
| 280 | /* |
| 281 | * Some systems are broken and cannot set the irq enable |
| 282 | * bit, even if they support interrupts. |
| 283 | */ |
| 284 | bool irq_enable_broken; |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 285 | |
Corey Minyard | 7522f96 | 2019-08-02 07:31:36 -0500 | [diff] [blame^] | 286 | /* Is the driver in maintenance mode? */ |
| 287 | bool in_maintenance_mode; |
| 288 | |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 289 | /* |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 290 | * Did we get an attention that we did not handle? |
| 291 | */ |
| 292 | bool got_attn; |
| 293 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 294 | /* From the get device id response... */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 295 | struct ipmi_device_id device_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 297 | /* Driver model stuff. */ |
| 298 | struct device *dev; |
| 299 | struct platform_device *pdev; |
| 300 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 301 | /* |
| 302 | * True if we allocated the device, false if it came from |
| 303 | * someplace else (like PCI). |
| 304 | */ |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 305 | bool dev_registered; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | /* Slave address, could be reported from DMI. */ |
| 308 | unsigned char slave_addr; |
| 309 | |
| 310 | /* Counters and things for the proc filesystem. */ |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 311 | atomic_t stats[SI_NUM_STATS]; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 312 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 313 | struct task_struct *thread; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 314 | |
| 315 | struct list_head link; |
Zhao Yakui | 16f4232 | 2010-12-08 10:10:16 +0800 | [diff] [blame] | 316 | union ipmi_smi_info_union addr_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | }; |
| 318 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 319 | #define smi_inc_stat(smi, stat) \ |
| 320 | atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) |
| 321 | #define smi_get_stat(smi, stat) \ |
| 322 | ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) |
| 323 | |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 324 | #define SI_MAX_PARMS 4 |
| 325 | |
| 326 | static int force_kipmid[SI_MAX_PARMS]; |
| 327 | static int num_force_kipmid; |
Matthew Garrett | 5648028 | 2010-06-29 15:05:29 -0700 | [diff] [blame] | 328 | #ifdef CONFIG_PCI |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 329 | static bool pci_registered; |
Matthew Garrett | 5648028 | 2010-06-29 15:05:29 -0700 | [diff] [blame] | 330 | #endif |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 331 | #ifdef CONFIG_PARISC |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 332 | static bool parisc_registered; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 333 | #endif |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 334 | |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 335 | static unsigned int kipmid_max_busy_us[SI_MAX_PARMS]; |
| 336 | static int num_max_busy_us; |
| 337 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 338 | static bool unload_when_empty = true; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 339 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 340 | static int add_smi(struct smi_info *smi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 341 | static int try_smi_init(struct smi_info *smi); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 342 | static void cleanup_one_si(struct smi_info *to_clean); |
Corey Minyard | d247852 | 2011-02-10 16:08:38 -0600 | [diff] [blame] | 343 | static void cleanup_ipmi_si(void); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 344 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 345 | #ifdef DEBUG_TIMING |
| 346 | void debug_timestamp(char *msg) |
| 347 | { |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 348 | struct timespec64 t; |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 349 | |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 350 | getnstimeofday64(&t); |
| 351 | 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] | 352 | } |
| 353 | #else |
| 354 | #define debug_timestamp(x) |
| 355 | #endif |
| 356 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 357 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 358 | static int register_xaction_notifier(struct notifier_block *nb) |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 359 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 360 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 361 | } |
| 362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | static void deliver_recv_msg(struct smi_info *smi_info, |
| 364 | struct ipmi_smi_msg *msg) |
| 365 | { |
Corey Minyard | 7adf579 | 2012-03-28 14:42:49 -0700 | [diff] [blame] | 366 | /* Deliver the message to the upper layer. */ |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 367 | if (smi_info->intf) |
| 368 | ipmi_smi_msg_received(smi_info->intf, msg); |
| 369 | else |
| 370 | ipmi_free_smi_msg(msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
| 372 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 373 | static void return_hosed_msg(struct smi_info *smi_info, int cCode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | { |
| 375 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 376 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 377 | if (cCode < 0 || cCode > IPMI_ERR_UNSPECIFIED) |
| 378 | cCode = IPMI_ERR_UNSPECIFIED; |
| 379 | /* else use it as is */ |
| 380 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 381 | /* Make it a response */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | msg->rsp[0] = msg->data[0] | 4; |
| 383 | msg->rsp[1] = msg->data[1]; |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 384 | msg->rsp[2] = cCode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | msg->rsp_size = 3; |
| 386 | |
| 387 | smi_info->curr_msg = NULL; |
| 388 | deliver_recv_msg(smi_info, msg); |
| 389 | } |
| 390 | |
| 391 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) |
| 392 | { |
| 393 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 395 | if (!smi_info->waiting_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | smi_info->curr_msg = NULL; |
| 397 | rv = SI_SM_IDLE; |
| 398 | } else { |
| 399 | int err; |
| 400 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 401 | smi_info->curr_msg = smi_info->waiting_msg; |
| 402 | smi_info->waiting_msg = NULL; |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 403 | debug_timestamp("Start2"); |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 404 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
| 405 | 0, smi_info); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 406 | if (err & NOTIFY_STOP_MASK) { |
| 407 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 408 | goto out; |
| 409 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | err = smi_info->handlers->start_transaction( |
| 411 | smi_info->si_sm, |
| 412 | smi_info->curr_msg->data, |
| 413 | smi_info->curr_msg->data_size); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 414 | if (err) |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 415 | return_hosed_msg(smi_info, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | |
| 417 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 418 | } |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 419 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | return rv; |
| 421 | } |
| 422 | |
Corey Minyard | 0cfec91 | 2015-09-05 17:44:13 -0500 | [diff] [blame] | 423 | static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val) |
| 424 | { |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 425 | if (!smi_info->timer_can_start) |
| 426 | return; |
Corey Minyard | 0cfec91 | 2015-09-05 17:44:13 -0500 | [diff] [blame] | 427 | smi_info->last_timeout_jiffies = jiffies; |
| 428 | mod_timer(&smi_info->si_timer, new_val); |
| 429 | smi_info->timer_running = true; |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * Start a new message and (re)start the timer and thread. |
| 434 | */ |
| 435 | static void start_new_msg(struct smi_info *smi_info, unsigned char *msg, |
| 436 | unsigned int size) |
| 437 | { |
| 438 | smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES); |
| 439 | |
| 440 | if (smi_info->thread) |
| 441 | wake_up_process(smi_info->thread); |
| 442 | |
| 443 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, size); |
| 444 | } |
| 445 | |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 446 | static void start_check_enables(struct smi_info *smi_info) |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 447 | { |
| 448 | unsigned char msg[2]; |
| 449 | |
| 450 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 451 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 452 | |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 453 | start_new_msg(smi_info, msg, 2); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 454 | smi_info->si_state = SI_CHECKING_ENABLES; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 455 | } |
| 456 | |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 457 | static void start_clear_flags(struct smi_info *smi_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | { |
| 459 | unsigned char msg[3]; |
| 460 | |
| 461 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ |
| 462 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 463 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; |
| 464 | msg[2] = WDT_PRE_TIMEOUT_INT; |
| 465 | |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 466 | start_new_msg(smi_info, msg, 3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | smi_info->si_state = SI_CLEARING_FLAGS; |
| 468 | } |
| 469 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 470 | static void start_getting_msg_queue(struct smi_info *smi_info) |
| 471 | { |
| 472 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 473 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; |
| 474 | smi_info->curr_msg->data_size = 2; |
| 475 | |
Corey Minyard | 0cfec91 | 2015-09-05 17:44:13 -0500 | [diff] [blame] | 476 | start_new_msg(smi_info, smi_info->curr_msg->data, |
| 477 | smi_info->curr_msg->data_size); |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 478 | smi_info->si_state = SI_GETTING_MESSAGES; |
| 479 | } |
| 480 | |
| 481 | static void start_getting_events(struct smi_info *smi_info) |
| 482 | { |
| 483 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 484 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; |
| 485 | smi_info->curr_msg->data_size = 2; |
| 486 | |
Corey Minyard | 0cfec91 | 2015-09-05 17:44:13 -0500 | [diff] [blame] | 487 | start_new_msg(smi_info, smi_info->curr_msg->data, |
| 488 | smi_info->curr_msg->data_size); |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 489 | smi_info->si_state = SI_GETTING_EVENTS; |
| 490 | } |
| 491 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 492 | /* |
| 493 | * When we have a situtaion where we run out of memory and cannot |
| 494 | * allocate messages, we just leave them in the BMC and run the system |
| 495 | * polled until we can allocate some memory. Once we have some |
| 496 | * memory, we will re-enable the interrupt. |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 497 | * |
| 498 | * Note that we cannot just use disable_irq(), since the interrupt may |
| 499 | * be shared. |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 500 | */ |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 501 | static inline bool disable_si_irq(struct smi_info *smi_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 503 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 504 | smi_info->interrupt_disabled = true; |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 505 | start_check_enables(smi_info); |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 506 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | } |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 508 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 511 | static inline bool enable_si_irq(struct smi_info *smi_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | { |
| 513 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 514 | smi_info->interrupt_disabled = false; |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 515 | start_check_enables(smi_info); |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 516 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | } |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 518 | return false; |
| 519 | } |
| 520 | |
| 521 | /* |
| 522 | * Allocate a message. If unable to allocate, start the interrupt |
| 523 | * disable process and return NULL. If able to allocate but |
| 524 | * interrupts are disabled, free the message and return NULL after |
| 525 | * starting the interrupt enable process. |
| 526 | */ |
| 527 | static struct ipmi_smi_msg *alloc_msg_handle_irq(struct smi_info *smi_info) |
| 528 | { |
| 529 | struct ipmi_smi_msg *msg; |
| 530 | |
| 531 | msg = ipmi_alloc_smi_msg(); |
| 532 | if (!msg) { |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 533 | if (!disable_si_irq(smi_info)) |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 534 | smi_info->si_state = SI_NORMAL; |
| 535 | } else if (enable_si_irq(smi_info)) { |
| 536 | ipmi_free_smi_msg(msg); |
| 537 | msg = NULL; |
| 538 | } |
| 539 | return msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | static void handle_flags(struct smi_info *smi_info) |
| 543 | { |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 544 | retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
| 546 | /* Watchdog pre-timeout */ |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 547 | smi_inc_stat(smi_info, watchdog_pretimeouts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 549 | start_clear_flags(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 551 | if (smi_info->intf) |
| 552 | ipmi_smi_watchdog_pretimeout(smi_info->intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { |
| 554 | /* Messages available. */ |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 555 | smi_info->curr_msg = alloc_msg_handle_irq(smi_info); |
| 556 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 559 | start_getting_msg_queue(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { |
| 561 | /* Events available. */ |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 562 | smi_info->curr_msg = alloc_msg_handle_irq(smi_info); |
| 563 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | |
Corey Minyard | 968bf7c | 2014-11-06 19:06:00 -0600 | [diff] [blame] | 566 | start_getting_events(smi_info); |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 567 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 568 | smi_info->oem_data_avail_handler) { |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 569 | if (smi_info->oem_data_avail_handler(smi_info)) |
| 570 | goto retry; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 571 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | smi_info->si_state = SI_NORMAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 575 | /* |
| 576 | * Global enables we care about. |
| 577 | */ |
| 578 | #define GLOBAL_ENABLES_MASK (IPMI_BMC_EVT_MSG_BUFF | IPMI_BMC_RCV_MSG_INTR | \ |
| 579 | IPMI_BMC_EVT_MSG_INTR) |
| 580 | |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 581 | static u8 current_global_enables(struct smi_info *smi_info, u8 base, |
| 582 | bool *irq_on) |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 583 | { |
| 584 | u8 enables = 0; |
| 585 | |
| 586 | if (smi_info->supports_event_msg_buff) |
| 587 | enables |= IPMI_BMC_EVT_MSG_BUFF; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 588 | |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 589 | if (((smi_info->irq && !smi_info->interrupt_disabled) || |
| 590 | smi_info->cannot_disable_irq) && |
| 591 | !smi_info->irq_enable_broken) |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 592 | enables |= IPMI_BMC_RCV_MSG_INTR; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 593 | |
| 594 | if (smi_info->supports_event_msg_buff && |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 595 | smi_info->irq && !smi_info->interrupt_disabled && |
| 596 | !smi_info->irq_enable_broken) |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 597 | enables |= IPMI_BMC_EVT_MSG_INTR; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 598 | |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 599 | *irq_on = enables & (IPMI_BMC_EVT_MSG_INTR | IPMI_BMC_RCV_MSG_INTR); |
| 600 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 601 | return enables; |
| 602 | } |
| 603 | |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 604 | static void check_bt_irq(struct smi_info *smi_info, bool irq_on) |
| 605 | { |
| 606 | u8 irqstate = smi_info->io.inputb(&smi_info->io, IPMI_BT_INTMASK_REG); |
| 607 | |
| 608 | irqstate &= IPMI_BT_INTMASK_ENABLE_IRQ_BIT; |
| 609 | |
| 610 | if ((bool)irqstate == irq_on) |
| 611 | return; |
| 612 | |
| 613 | if (irq_on) |
| 614 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, |
| 615 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
| 616 | else |
| 617 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, 0); |
| 618 | } |
| 619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | static void handle_transaction_done(struct smi_info *smi_info) |
| 621 | { |
| 622 | struct ipmi_smi_msg *msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 624 | debug_timestamp("Done"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | switch (smi_info->si_state) { |
| 626 | case SI_NORMAL: |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 627 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | break; |
| 629 | |
| 630 | smi_info->curr_msg->rsp_size |
| 631 | = smi_info->handlers->get_result( |
| 632 | smi_info->si_sm, |
| 633 | smi_info->curr_msg->rsp, |
| 634 | IPMI_MAX_MSG_LENGTH); |
| 635 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 636 | /* |
| 637 | * Do this here becase deliver_recv_msg() releases the |
| 638 | * lock, and a new message can be put in during the |
| 639 | * time the lock is released. |
| 640 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | msg = smi_info->curr_msg; |
| 642 | smi_info->curr_msg = NULL; |
| 643 | deliver_recv_msg(smi_info, msg); |
| 644 | break; |
| 645 | |
| 646 | case SI_GETTING_FLAGS: |
| 647 | { |
| 648 | unsigned char msg[4]; |
| 649 | unsigned int len; |
| 650 | |
| 651 | /* We got the flags from the SMI, now handle them. */ |
| 652 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 653 | if (msg[2] != 0) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 654 | /* Error fetching flags, just give up for now. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | smi_info->si_state = SI_NORMAL; |
| 656 | } else if (len < 4) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 657 | /* |
| 658 | * Hmm, no flags. That's technically illegal, but |
| 659 | * don't use uninitialized data. |
| 660 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | smi_info->si_state = SI_NORMAL; |
| 662 | } else { |
| 663 | smi_info->msg_flags = msg[3]; |
| 664 | handle_flags(smi_info); |
| 665 | } |
| 666 | break; |
| 667 | } |
| 668 | |
| 669 | case SI_CLEARING_FLAGS: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | { |
| 671 | unsigned char msg[3]; |
| 672 | |
| 673 | /* We cleared the flags. */ |
| 674 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); |
| 675 | if (msg[2] != 0) { |
| 676 | /* Error clearing flags */ |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 677 | dev_warn(smi_info->dev, |
| 678 | "Error clearing flags: %2.2x\n", msg[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | } |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 680 | smi_info->si_state = SI_NORMAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | break; |
| 682 | } |
| 683 | |
| 684 | case SI_GETTING_EVENTS: |
| 685 | { |
| 686 | smi_info->curr_msg->rsp_size |
| 687 | = smi_info->handlers->get_result( |
| 688 | smi_info->si_sm, |
| 689 | smi_info->curr_msg->rsp, |
| 690 | IPMI_MAX_MSG_LENGTH); |
| 691 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 692 | /* |
| 693 | * Do this here becase deliver_recv_msg() releases the |
| 694 | * lock, and a new message can be put in during the |
| 695 | * time the lock is released. |
| 696 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | msg = smi_info->curr_msg; |
| 698 | smi_info->curr_msg = NULL; |
| 699 | if (msg->rsp[2] != 0) { |
| 700 | /* Error getting event, probably done. */ |
| 701 | msg->done(msg); |
| 702 | |
| 703 | /* Take off the event flag. */ |
| 704 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; |
| 705 | handle_flags(smi_info); |
| 706 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 707 | smi_inc_stat(smi_info, events); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 709 | /* |
| 710 | * Do this before we deliver the message |
| 711 | * because delivering the message releases the |
| 712 | * lock and something else can mess with the |
| 713 | * state. |
| 714 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | handle_flags(smi_info); |
| 716 | |
| 717 | deliver_recv_msg(smi_info, msg); |
| 718 | } |
| 719 | break; |
| 720 | } |
| 721 | |
| 722 | case SI_GETTING_MESSAGES: |
| 723 | { |
| 724 | smi_info->curr_msg->rsp_size |
| 725 | = smi_info->handlers->get_result( |
| 726 | smi_info->si_sm, |
| 727 | smi_info->curr_msg->rsp, |
| 728 | IPMI_MAX_MSG_LENGTH); |
| 729 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 730 | /* |
| 731 | * Do this here becase deliver_recv_msg() releases the |
| 732 | * lock, and a new message can be put in during the |
| 733 | * time the lock is released. |
| 734 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | msg = smi_info->curr_msg; |
| 736 | smi_info->curr_msg = NULL; |
| 737 | if (msg->rsp[2] != 0) { |
| 738 | /* Error getting event, probably done. */ |
| 739 | msg->done(msg); |
| 740 | |
| 741 | /* Take off the msg flag. */ |
| 742 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; |
| 743 | handle_flags(smi_info); |
| 744 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 745 | smi_inc_stat(smi_info, incoming_messages); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 747 | /* |
| 748 | * Do this before we deliver the message |
| 749 | * because delivering the message releases the |
| 750 | * lock and something else can mess with the |
| 751 | * state. |
| 752 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | handle_flags(smi_info); |
| 754 | |
| 755 | deliver_recv_msg(smi_info, msg); |
| 756 | } |
| 757 | break; |
| 758 | } |
| 759 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 760 | case SI_CHECKING_ENABLES: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | { |
| 762 | unsigned char msg[4]; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 763 | u8 enables; |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 764 | bool irq_on; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | |
| 766 | /* We got the flags from the SMI, now handle them. */ |
| 767 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 768 | if (msg[2] != 0) { |
Corey Minyard | 0849bfe | 2013-05-16 14:04:26 -0500 | [diff] [blame] | 769 | dev_warn(smi_info->dev, |
| 770 | "Couldn't get irq info: %x.\n", msg[2]); |
| 771 | dev_warn(smi_info->dev, |
| 772 | "Maybe ok, but ipmi might run very slowly.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | smi_info->si_state = SI_NORMAL; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 774 | break; |
| 775 | } |
Corey Minyard | 95c97b5 | 2014-11-20 07:19:44 -0600 | [diff] [blame] | 776 | enables = current_global_enables(smi_info, 0, &irq_on); |
| 777 | if (smi_info->si_type == SI_BT) |
| 778 | /* BT has its own interrupt enable bit. */ |
| 779 | check_bt_irq(smi_info, irq_on); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 780 | if (enables != (msg[3] & GLOBAL_ENABLES_MASK)) { |
| 781 | /* Enables are not correct, fix them. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 783 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 784 | msg[2] = enables | (msg[3] & ~GLOBAL_ENABLES_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | smi_info->handlers->start_transaction( |
| 786 | smi_info->si_sm, msg, 3); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 787 | smi_info->si_state = SI_SETTING_ENABLES; |
| 788 | } else if (smi_info->supports_event_msg_buff) { |
| 789 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
| 790 | if (!smi_info->curr_msg) { |
| 791 | smi_info->si_state = SI_NORMAL; |
| 792 | break; |
| 793 | } |
| 794 | start_getting_msg_queue(smi_info); |
| 795 | } else { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 796 | smi_info->si_state = SI_NORMAL; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 797 | } |
| 798 | break; |
| 799 | } |
| 800 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 801 | case SI_SETTING_ENABLES: |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 802 | { |
| 803 | unsigned char msg[4]; |
| 804 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 805 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 806 | if (msg[2] != 0) |
| 807 | dev_warn(smi_info->dev, |
| 808 | "Could not set the global enables: 0x%x.\n", |
| 809 | msg[2]); |
| 810 | |
| 811 | if (smi_info->supports_event_msg_buff) { |
| 812 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
| 813 | if (!smi_info->curr_msg) { |
| 814 | smi_info->si_state = SI_NORMAL; |
| 815 | break; |
| 816 | } |
| 817 | start_getting_msg_queue(smi_info); |
| 818 | } else { |
| 819 | smi_info->si_state = SI_NORMAL; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 820 | } |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 821 | break; |
| 822 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | } |
| 824 | } |
| 825 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 826 | /* |
| 827 | * Called on timeouts and events. Timeouts should pass the elapsed |
| 828 | * time, interrupts should pass in zero. Must be called with |
| 829 | * si_lock held and interrupts disabled. |
| 830 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, |
| 832 | int time) |
| 833 | { |
| 834 | enum si_sm_result si_sm_result; |
| 835 | |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 836 | restart: |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 837 | /* |
| 838 | * There used to be a loop here that waited a little while |
| 839 | * (around 25us) before giving up. That turned out to be |
| 840 | * pointless, the minimum delays I was seeing were in the 300us |
| 841 | * range, which is far too long to wait in an interrupt. So |
| 842 | * we just run until the state machine tells us something |
| 843 | * happened or it needs a delay. |
| 844 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); |
| 846 | time = 0; |
| 847 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 850 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 851 | smi_inc_stat(smi_info, complete_transactions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
| 853 | handle_transaction_done(smi_info); |
Corey Minyard | d9dffd2 | 2016-01-25 16:11:20 -0600 | [diff] [blame] | 854 | goto restart; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 855 | } else if (si_sm_result == SI_SM_HOSED) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 856 | smi_inc_stat(smi_info, hosed_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 858 | /* |
| 859 | * Do the before return_hosed_msg, because that |
| 860 | * releases the lock. |
| 861 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | smi_info->si_state = SI_NORMAL; |
| 863 | if (smi_info->curr_msg != NULL) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 864 | /* |
| 865 | * If we were handling a user message, format |
| 866 | * a response to send to the upper layer to |
| 867 | * tell it about the error. |
| 868 | */ |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 869 | return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | } |
Corey Minyard | d9dffd2 | 2016-01-25 16:11:20 -0600 | [diff] [blame] | 871 | goto restart; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | } |
| 873 | |
Corey Minyard | 4ea1842 | 2008-04-29 01:01:01 -0700 | [diff] [blame] | 874 | /* |
| 875 | * We prefer handling attn over new messages. But don't do |
| 876 | * this if there is not yet an upper layer to handle anything. |
| 877 | */ |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 878 | if (likely(smi_info->intf) && |
| 879 | (si_sm_result == SI_SM_ATTN || smi_info->got_attn)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | unsigned char msg[2]; |
| 881 | |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 882 | if (smi_info->si_state != SI_NORMAL) { |
| 883 | /* |
| 884 | * We got an ATTN, but we are doing something else. |
| 885 | * Handle the ATTN later. |
| 886 | */ |
| 887 | smi_info->got_attn = true; |
| 888 | } else { |
| 889 | smi_info->got_attn = false; |
| 890 | smi_inc_stat(smi_info, attentions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 892 | /* |
| 893 | * Got a attn, send down a get message flags to see |
| 894 | * what's causing it. It would be better to handle |
| 895 | * this in the upper layer, but due to the way |
| 896 | * interrupts work with the SMI, that's not really |
| 897 | * possible. |
| 898 | */ |
| 899 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 900 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | |
Corey Minyard | 0cfec91 | 2015-09-05 17:44:13 -0500 | [diff] [blame] | 902 | start_new_msg(smi_info, msg, 2); |
Corey Minyard | a8df150 | 2014-11-19 11:47:17 -0600 | [diff] [blame] | 903 | smi_info->si_state = SI_GETTING_FLAGS; |
| 904 | goto restart; |
| 905 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | /* If we are currently idle, try to start the next message. */ |
| 909 | if (si_sm_result == SI_SM_IDLE) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 910 | smi_inc_stat(smi_info, idles); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | |
| 912 | si_sm_result = start_next_msg(smi_info); |
| 913 | if (si_sm_result != SI_SM_IDLE) |
| 914 | goto restart; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 915 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | |
| 917 | if ((si_sm_result == SI_SM_IDLE) |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 918 | && (atomic_read(&smi_info->req_events))) { |
| 919 | /* |
| 920 | * We are idle and the upper layer requested that I fetch |
| 921 | * events, so do so. |
| 922 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | atomic_set(&smi_info->req_events, 0); |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 924 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 925 | /* |
| 926 | * Take this opportunity to check the interrupt and |
| 927 | * message enable state for the BMC. The BMC can be |
| 928 | * asynchronously reset, and may thus get interrupts |
| 929 | * disable and messages disabled. |
| 930 | */ |
| 931 | if (smi_info->supports_event_msg_buff || smi_info->irq) { |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 932 | start_check_enables(smi_info); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 933 | } else { |
| 934 | smi_info->curr_msg = alloc_msg_handle_irq(smi_info); |
| 935 | if (!smi_info->curr_msg) |
| 936 | goto out; |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 937 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 938 | start_getting_events(smi_info); |
| 939 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | goto restart; |
| 941 | } |
Corey Minyard | 314ef52 | 2015-09-05 17:58:13 -0500 | [diff] [blame] | 942 | |
| 943 | if (si_sm_result == SI_SM_IDLE && smi_info->timer_running) { |
| 944 | /* Ok it if fails, the timer will just go off. */ |
| 945 | if (del_timer(&smi_info->si_timer)) |
| 946 | smi_info->timer_running = false; |
| 947 | } |
| 948 | |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 949 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | return si_sm_result; |
| 951 | } |
| 952 | |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 953 | static void check_start_timer_thread(struct smi_info *smi_info) |
| 954 | { |
| 955 | if (smi_info->si_state == SI_NORMAL && smi_info->curr_msg == NULL) { |
| 956 | smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES); |
| 957 | |
| 958 | if (smi_info->thread) |
| 959 | wake_up_process(smi_info->thread); |
| 960 | |
| 961 | start_next_msg(smi_info); |
| 962 | smi_event_handler(smi_info, 0); |
| 963 | } |
| 964 | } |
| 965 | |
Hidehiro Kawai | 82802f9 | 2015-07-27 14:55:16 +0900 | [diff] [blame] | 966 | static void flush_messages(void *send_info) |
Hidehiro Kawai | e45361d | 2015-07-27 14:55:16 +0900 | [diff] [blame] | 967 | { |
Hidehiro Kawai | 82802f9 | 2015-07-27 14:55:16 +0900 | [diff] [blame] | 968 | struct smi_info *smi_info = send_info; |
Hidehiro Kawai | e45361d | 2015-07-27 14:55:16 +0900 | [diff] [blame] | 969 | enum si_sm_result result; |
| 970 | |
| 971 | /* |
| 972 | * Currently, this function is called only in run-to-completion |
| 973 | * mode. This means we are single-threaded, no need for locks. |
| 974 | */ |
| 975 | result = smi_event_handler(smi_info, 0); |
| 976 | while (result != SI_SM_IDLE) { |
| 977 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 978 | result = smi_event_handler(smi_info, SI_SHORT_TIMEOUT_USEC); |
| 979 | } |
| 980 | } |
| 981 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | static void sender(void *send_info, |
Corey Minyard | 99ab32f | 2014-11-07 07:57:31 -0600 | [diff] [blame] | 983 | struct ipmi_smi_msg *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | { |
| 985 | struct smi_info *smi_info = send_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 988 | debug_timestamp("Enqueue"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | |
| 990 | if (smi_info->run_to_completion) { |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 991 | /* |
Hidehiro Kawai | 82802f9 | 2015-07-27 14:55:16 +0900 | [diff] [blame] | 992 | * If we are running to completion, start it. Upper |
| 993 | * layer will call flush_messages to clear it out. |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 994 | */ |
Hidehiro Kawai | 9f81270 | 2015-04-23 11:16:44 +0900 | [diff] [blame] | 995 | smi_info->waiting_msg = msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 999 | spin_lock_irqsave(&smi_info->si_lock, flags); |
Corey Minyard | 1d86e29 | 2015-02-19 08:25:49 -0600 | [diff] [blame] | 1000 | /* |
| 1001 | * The following two lines don't need to be under the lock for |
| 1002 | * the lock's sake, but they do need SMP memory barriers to |
| 1003 | * avoid getting things out of order. We are already claiming |
| 1004 | * the lock, anyway, so just do it under the lock to avoid the |
| 1005 | * ordering problem. |
| 1006 | */ |
| 1007 | BUG_ON(smi_info->waiting_msg); |
| 1008 | smi_info->waiting_msg = msg; |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 1009 | check_start_timer_thread(smi_info); |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 1010 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | } |
| 1012 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1013 | 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] | 1014 | { |
| 1015 | struct smi_info *smi_info = send_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
| 1017 | smi_info->run_to_completion = i_run_to_completion; |
Hidehiro Kawai | e45361d | 2015-07-27 14:55:16 +0900 | [diff] [blame] | 1018 | if (i_run_to_completion) |
| 1019 | flush_messages(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | } |
| 1021 | |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1022 | /* |
| 1023 | * Use -1 in the nsec value of the busy waiting timespec to tell that |
| 1024 | * we are spinning in kipmid looking for something and not delaying |
| 1025 | * between checks |
| 1026 | */ |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1027 | static inline void ipmi_si_set_not_busy(struct timespec64 *ts) |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1028 | { |
| 1029 | ts->tv_nsec = -1; |
| 1030 | } |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1031 | static inline int ipmi_si_is_busy(struct timespec64 *ts) |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1032 | { |
| 1033 | return ts->tv_nsec != -1; |
| 1034 | } |
| 1035 | |
Arnd Bergmann | cc4cbe9 | 2014-10-06 14:17:52 -0500 | [diff] [blame] | 1036 | static inline int ipmi_thread_busy_wait(enum si_sm_result smi_result, |
| 1037 | const struct smi_info *smi_info, |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1038 | struct timespec64 *busy_until) |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1039 | { |
| 1040 | unsigned int max_busy_us = 0; |
| 1041 | |
| 1042 | if (smi_info->intf_num < num_max_busy_us) |
| 1043 | max_busy_us = kipmid_max_busy_us[smi_info->intf_num]; |
| 1044 | if (max_busy_us == 0 || smi_result != SI_SM_CALL_WITH_DELAY) |
| 1045 | ipmi_si_set_not_busy(busy_until); |
| 1046 | else if (!ipmi_si_is_busy(busy_until)) { |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1047 | getnstimeofday64(busy_until); |
| 1048 | timespec64_add_ns(busy_until, max_busy_us*NSEC_PER_USEC); |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1049 | } else { |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1050 | struct timespec64 now; |
| 1051 | |
| 1052 | getnstimeofday64(&now); |
| 1053 | if (unlikely(timespec64_compare(&now, busy_until) > 0)) { |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1054 | ipmi_si_set_not_busy(busy_until); |
| 1055 | return 0; |
| 1056 | } |
| 1057 | } |
| 1058 | return 1; |
| 1059 | } |
| 1060 | |
| 1061 | |
| 1062 | /* |
| 1063 | * A busy-waiting loop for speeding up IPMI operation. |
| 1064 | * |
| 1065 | * Lousy hardware makes this hard. This is only enabled for systems |
| 1066 | * that are not BT and do not have interrupts. It starts spinning |
| 1067 | * when an operation is complete or until max_busy tells it to stop |
| 1068 | * (if that is enabled). See the paragraph on kimid_max_busy_us in |
| 1069 | * Documentation/IPMI.txt for details. |
| 1070 | */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1071 | static int ipmi_thread(void *data) |
| 1072 | { |
| 1073 | struct smi_info *smi_info = data; |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 1074 | unsigned long flags; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1075 | enum si_sm_result smi_result; |
John Stultz | 48862ea2 | 2015-01-07 14:24:29 -0800 | [diff] [blame] | 1076 | struct timespec64 busy_until; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1077 | |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1078 | ipmi_si_set_not_busy(&busy_until); |
Dongsheng Yang | 8698a74 | 2014-03-11 18:09:12 +0800 | [diff] [blame] | 1079 | set_user_nice(current, MAX_NICE); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 1080 | while (!kthread_should_stop()) { |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1081 | int busy_wait; |
| 1082 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1083 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1084 | smi_result = smi_event_handler(smi_info, 0); |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 1085 | |
| 1086 | /* |
| 1087 | * If the driver is doing something, there is a possible |
| 1088 | * race with the timer. If the timer handler see idle, |
| 1089 | * and the thread here sees something else, the timer |
| 1090 | * handler won't restart the timer even though it is |
| 1091 | * required. So start it here if necessary. |
| 1092 | */ |
| 1093 | if (smi_result != SI_SM_IDLE && !smi_info->timer_running) |
| 1094 | smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES); |
| 1095 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1096 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1097 | busy_wait = ipmi_thread_busy_wait(smi_result, smi_info, |
| 1098 | &busy_until); |
Corey Minyard | 7522f96 | 2019-08-02 07:31:36 -0500 | [diff] [blame^] | 1099 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1100 | ; /* do nothing */ |
Corey Minyard | 7522f96 | 2019-08-02 07:31:36 -0500 | [diff] [blame^] | 1101 | } else if (smi_result == SI_SM_CALL_WITH_DELAY && busy_wait) { |
| 1102 | /* |
| 1103 | * In maintenance mode we run as fast as |
| 1104 | * possible to allow firmware updates to |
| 1105 | * complete as fast as possible, but normally |
| 1106 | * don't bang on the scheduler. |
| 1107 | */ |
| 1108 | if (smi_info->in_maintenance_mode) |
| 1109 | schedule(); |
| 1110 | else |
| 1111 | usleep_range(100, 200); |
| 1112 | } else if (smi_result == SI_SM_IDLE) { |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 1113 | if (atomic_read(&smi_info->need_watch)) { |
| 1114 | schedule_timeout_interruptible(100); |
| 1115 | } else { |
| 1116 | /* Wait to be woken up when we are needed. */ |
| 1117 | __set_current_state(TASK_INTERRUPTIBLE); |
| 1118 | schedule(); |
| 1119 | } |
Corey Minyard | 7522f96 | 2019-08-02 07:31:36 -0500 | [diff] [blame^] | 1120 | } else { |
Martin Wilck | 8d1f66d | 2010-06-29 15:05:31 -0700 | [diff] [blame] | 1121 | schedule_timeout_interruptible(1); |
Corey Minyard | 7522f96 | 2019-08-02 07:31:36 -0500 | [diff] [blame^] | 1122 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1123 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 1124 | return 0; |
| 1125 | } |
| 1126 | |
| 1127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | static void poll(void *send_info) |
| 1129 | { |
| 1130 | struct smi_info *smi_info = send_info; |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1131 | unsigned long flags = 0; |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1132 | bool run_to_completion = smi_info->run_to_completion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | |
Corey Minyard | 15c62e1 | 2006-12-06 20:41:06 -0800 | [diff] [blame] | 1134 | /* |
| 1135 | * Make sure there is some delay in the poll loop so we can |
| 1136 | * drive time forward and timeout things. |
| 1137 | */ |
| 1138 | udelay(10); |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1139 | if (!run_to_completion) |
| 1140 | spin_lock_irqsave(&smi_info->si_lock, flags); |
Corey Minyard | 15c62e1 | 2006-12-06 20:41:06 -0800 | [diff] [blame] | 1141 | smi_event_handler(smi_info, 10); |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1142 | if (!run_to_completion) |
| 1143 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | } |
| 1145 | |
| 1146 | static void request_events(void *send_info) |
| 1147 | { |
| 1148 | struct smi_info *smi_info = send_info; |
| 1149 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 1150 | if (!smi_info->has_event_buffer) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1151 | return; |
| 1152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | atomic_set(&smi_info->req_events, 1); |
| 1154 | } |
| 1155 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1156 | static void set_need_watch(void *send_info, bool enable) |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 1157 | { |
| 1158 | struct smi_info *smi_info = send_info; |
| 1159 | unsigned long flags; |
| 1160 | |
| 1161 | atomic_set(&smi_info->need_watch, enable); |
| 1162 | spin_lock_irqsave(&smi_info->si_lock, flags); |
| 1163 | check_start_timer_thread(smi_info); |
| 1164 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
| 1165 | } |
| 1166 | |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1167 | static int initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | static void smi_timeout(unsigned long data) |
| 1170 | { |
| 1171 | struct smi_info *smi_info = (struct smi_info *) data; |
| 1172 | enum si_sm_result smi_result; |
| 1173 | unsigned long flags; |
| 1174 | unsigned long jiffies_now; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 1175 | long time_diff; |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1176 | long timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 1179 | debug_timestamp("Timer"); |
| 1180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | jiffies_now = jiffies; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 1182 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | * SI_USEC_PER_JIFFY); |
| 1184 | smi_result = smi_event_handler(smi_info, time_diff); |
| 1185 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1186 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | /* Running with interrupts, only do long timeouts. */ |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1188 | timeout = jiffies + SI_TIMEOUT_JIFFIES; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1189 | smi_inc_stat(smi_info, long_timeouts); |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1190 | goto do_mod_timer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | } |
| 1192 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1193 | /* |
| 1194 | * If the state machine asks for a short delay, then shorten |
| 1195 | * the timer timeout. |
| 1196 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | if (smi_result == SI_SM_CALL_WITH_DELAY) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1198 | smi_inc_stat(smi_info, short_timeouts); |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1199 | timeout = jiffies + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1201 | smi_inc_stat(smi_info, long_timeouts); |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1202 | timeout = jiffies + SI_TIMEOUT_JIFFIES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | } |
| 1204 | |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 1205 | do_mod_timer: |
Matthew Garrett | 3326f4f | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 1206 | if (smi_result != SI_SM_IDLE) |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 1207 | smi_mod_timer(smi_info, timeout); |
| 1208 | else |
| 1209 | smi_info->timer_running = false; |
| 1210 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | } |
| 1212 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1213 | static irqreturn_t si_irq_handler(int irq, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | { |
| 1215 | struct smi_info *smi_info = data; |
| 1216 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | |
| 1218 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 1219 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1220 | smi_inc_stat(smi_info, interrupts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 1222 | debug_timestamp("Interrupt"); |
| 1223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 1226 | return IRQ_HANDLED; |
| 1227 | } |
| 1228 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1229 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1230 | { |
| 1231 | struct smi_info *smi_info = data; |
| 1232 | /* We need to clear the IRQ flag for the BT interface. */ |
| 1233 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, |
| 1234 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT |
| 1235 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1236 | return si_irq_handler(irq, data); |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1237 | } |
| 1238 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1239 | static int smi_start_processing(void *send_info, |
| 1240 | ipmi_smi_t intf) |
| 1241 | { |
| 1242 | struct smi_info *new_smi = send_info; |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1243 | int enable = 0; |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1244 | |
| 1245 | new_smi->intf = intf; |
| 1246 | |
| 1247 | /* Set up the timer that drives the interface. */ |
| 1248 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 1249 | new_smi->timer_can_start = true; |
Bodo Stroesser | 48e8ac2 | 2014-04-14 09:46:51 -0500 | [diff] [blame] | 1250 | smi_mod_timer(new_smi, jiffies + SI_TIMEOUT_JIFFIES); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1251 | |
Jan Stancek | 27f972d | 2015-12-08 13:57:51 -0500 | [diff] [blame] | 1252 | /* Try to claim any interrupts. */ |
| 1253 | if (new_smi->irq_setup) |
| 1254 | new_smi->irq_setup(new_smi); |
| 1255 | |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1256 | /* |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1257 | * Check if the user forcefully enabled the daemon. |
| 1258 | */ |
| 1259 | if (new_smi->intf_num < num_force_kipmid) |
| 1260 | enable = force_kipmid[new_smi->intf_num]; |
| 1261 | /* |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1262 | * The BT interface is efficient enough to not need a thread, |
| 1263 | * and there is no need for a thread if we have interrupts. |
| 1264 | */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1265 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1266 | enable = 1; |
| 1267 | |
| 1268 | if (enable) { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1269 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
| 1270 | "kipmi%d", new_smi->intf_num); |
| 1271 | if (IS_ERR(new_smi->thread)) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1272 | dev_notice(new_smi->dev, "Could not start" |
| 1273 | " kernel thread due to error %ld, only using" |
| 1274 | " timers to drive the interface\n", |
| 1275 | PTR_ERR(new_smi->thread)); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1276 | new_smi->thread = NULL; |
| 1277 | } |
| 1278 | } |
| 1279 | |
| 1280 | return 0; |
| 1281 | } |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1282 | |
Zhao Yakui | 16f4232 | 2010-12-08 10:10:16 +0800 | [diff] [blame] | 1283 | static int get_smi_info(void *send_info, struct ipmi_smi_info *data) |
| 1284 | { |
| 1285 | struct smi_info *smi = send_info; |
| 1286 | |
| 1287 | data->addr_src = smi->addr_source; |
| 1288 | data->dev = smi->dev; |
| 1289 | data->addr_info = smi->addr_info; |
| 1290 | get_device(smi->dev); |
| 1291 | |
| 1292 | return 0; |
| 1293 | } |
| 1294 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1295 | static void set_maintenance_mode(void *send_info, bool enable) |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1296 | { |
| 1297 | struct smi_info *smi_info = send_info; |
| 1298 | |
| 1299 | if (!enable) |
| 1300 | atomic_set(&smi_info->req_events, 0); |
Corey Minyard | 7522f96 | 2019-08-02 07:31:36 -0500 | [diff] [blame^] | 1301 | smi_info->in_maintenance_mode = enable; |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1302 | } |
| 1303 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1304 | static const struct ipmi_smi_handlers handlers = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | .owner = THIS_MODULE, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1306 | .start_processing = smi_start_processing, |
Zhao Yakui | 16f4232 | 2010-12-08 10:10:16 +0800 | [diff] [blame] | 1307 | .get_smi_info = get_smi_info, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | .sender = sender, |
| 1309 | .request_events = request_events, |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 1310 | .set_need_watch = set_need_watch, |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1311 | .set_maintenance_mode = set_maintenance_mode, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | .set_run_to_completion = set_run_to_completion, |
Hidehiro Kawai | 82802f9 | 2015-07-27 14:55:16 +0900 | [diff] [blame] | 1313 | .flush_messages = flush_messages, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | .poll = poll, |
| 1315 | }; |
| 1316 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1317 | /* |
| 1318 | * There can be 4 IO ports passed in (with or without IRQs), 4 addresses, |
| 1319 | * a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS. |
| 1320 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1322 | static LIST_HEAD(smi_infos); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1323 | static DEFINE_MUTEX(smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1324 | static int smi_num; /* Used to sequence the SMIs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | #define DEFAULT_REGSPACING 1 |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 1327 | #define DEFAULT_REGSIZE 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1329 | #ifdef CONFIG_ACPI |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1330 | static bool si_tryacpi = true; |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1331 | #endif |
| 1332 | #ifdef CONFIG_DMI |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1333 | static bool si_trydmi = true; |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1334 | #endif |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1335 | static bool si_tryplatform = true; |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1336 | #ifdef CONFIG_PCI |
Shailendra Verma | fedb25e | 2015-05-26 00:54:57 +0530 | [diff] [blame] | 1337 | static bool si_trypci = true; |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1338 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | static char *si_type[SI_MAX_PARMS]; |
| 1340 | #define MAX_SI_TYPE_STR 30 |
| 1341 | static char si_type_str[MAX_SI_TYPE_STR]; |
| 1342 | static unsigned long addrs[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1343 | static unsigned int num_addrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | static unsigned int ports[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1345 | static unsigned int num_ports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | static int irqs[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1347 | static unsigned int num_irqs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | static int regspacings[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1349 | static unsigned int num_regspacings; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | static int regsizes[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1351 | static unsigned int num_regsizes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | static int regshifts[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1353 | static unsigned int num_regshifts; |
Bela Lubkin | 2f95d51 | 2010-03-10 15:23:07 -0800 | [diff] [blame] | 1354 | 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] | 1355 | static unsigned int num_slave_addrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1357 | #define IPMI_IO_ADDR_SPACE 0 |
| 1358 | #define IPMI_MEM_ADDR_SPACE 1 |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 1359 | static const char * const addr_space_to_str[] = { "i/o", "mem" }; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1360 | |
| 1361 | static int hotmod_handler(const char *val, struct kernel_param *kp); |
| 1362 | |
| 1363 | module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200); |
| 1364 | MODULE_PARM_DESC(hotmod, "Add and remove interfaces. See" |
| 1365 | " Documentation/IPMI.txt in the kernel sources for the" |
| 1366 | " gory details."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 1368 | #ifdef CONFIG_ACPI |
| 1369 | module_param_named(tryacpi, si_tryacpi, bool, 0); |
| 1370 | MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the" |
| 1371 | " default scan of the interfaces identified via ACPI"); |
| 1372 | #endif |
| 1373 | #ifdef CONFIG_DMI |
| 1374 | module_param_named(trydmi, si_trydmi, bool, 0); |
| 1375 | MODULE_PARM_DESC(trydmi, "Setting this to zero will disable the" |
| 1376 | " default scan of the interfaces identified via DMI"); |
| 1377 | #endif |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1378 | module_param_named(tryplatform, si_tryplatform, bool, 0); |
Corey Minyard | f813655 | 2016-01-19 14:51:53 -0600 | [diff] [blame] | 1379 | MODULE_PARM_DESC(tryplatform, "Setting this to zero will disable the" |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1380 | " default scan of the interfaces identified via platform" |
| 1381 | " interfaces like openfirmware"); |
| 1382 | #ifdef CONFIG_PCI |
| 1383 | module_param_named(trypci, si_trypci, bool, 0); |
Corey Minyard | f813655 | 2016-01-19 14:51:53 -0600 | [diff] [blame] | 1384 | MODULE_PARM_DESC(trypci, "Setting this to zero will disable the" |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 1385 | " default scan of the interfaces identified via pci"); |
| 1386 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); |
| 1388 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" |
| 1389 | " interface separated by commas. The types are 'kcs'," |
| 1390 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" |
| 1391 | " the first interface to kcs and the second to bt"); |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1392 | module_param_array(addrs, ulong, &num_addrs, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" |
| 1394 | " addresses separated by commas. Only use if an interface" |
| 1395 | " is in memory. Otherwise, set it to zero or leave" |
| 1396 | " it blank."); |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1397 | module_param_array(ports, uint, &num_ports, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" |
| 1399 | " addresses separated by commas. Only use if an interface" |
| 1400 | " is a port. Otherwise, set it to zero or leave" |
| 1401 | " it blank."); |
| 1402 | module_param_array(irqs, int, &num_irqs, 0); |
| 1403 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" |
| 1404 | " addresses separated by commas. Only use if an interface" |
| 1405 | " has an interrupt. Otherwise, set it to zero or leave" |
| 1406 | " it blank."); |
| 1407 | module_param_array(regspacings, int, &num_regspacings, 0); |
| 1408 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" |
| 1409 | " and each successive register used by the interface. For" |
| 1410 | " instance, if the start address is 0xca2 and the spacing" |
| 1411 | " is 2, then the second address is at 0xca4. Defaults" |
| 1412 | " to 1."); |
| 1413 | module_param_array(regsizes, int, &num_regsizes, 0); |
| 1414 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." |
| 1415 | " This should generally be 1, 2, 4, or 8 for an 8-bit," |
| 1416 | " 16-bit, 32-bit, or 64-bit register. Use this if you" |
| 1417 | " the 8-bit IPMI register has to be read from a larger" |
| 1418 | " register."); |
| 1419 | module_param_array(regshifts, int, &num_regshifts, 0); |
| 1420 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." |
| 1421 | " IPMI register, in bits. For instance, if the data" |
| 1422 | " is read from a 32-bit word and the IPMI data is in" |
| 1423 | " bit 8-15, then the shift would be 8"); |
| 1424 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); |
| 1425 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" |
| 1426 | " the controller. Normally this is 0x20, but can be" |
| 1427 | " overridden by this parm. This is an array indexed" |
| 1428 | " by interface number."); |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1429 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
| 1430 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" |
| 1431 | " disabled(0). Normally the IPMI driver auto-detects" |
| 1432 | " this, but the value may be overridden by this parm."); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 1433 | module_param(unload_when_empty, bool, 0); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1434 | MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are" |
| 1435 | " specified or found, default is 1. Setting to 0" |
| 1436 | " is useful for hot add of devices using hotmod."); |
Martin Wilck | ae74e82 | 2010-03-10 15:23:06 -0800 | [diff] [blame] | 1437 | module_param_array(kipmid_max_busy_us, uint, &num_max_busy_us, 0644); |
| 1438 | MODULE_PARM_DESC(kipmid_max_busy_us, |
| 1439 | "Max time (in microseconds) to busy-wait for IPMI data before" |
| 1440 | " sleeping. 0 (default) means to wait forever. Set to 100-500" |
| 1441 | " if kipmid is using up a lot of CPU time."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | |
| 1443 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1444 | static void std_irq_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1446 | if (info->si_type == SI_BT) |
| 1447 | /* Disable the interrupt in the BT interface. */ |
| 1448 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); |
| 1449 | free_irq(info->irq, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | |
| 1452 | static int std_irq_setup(struct smi_info *info) |
| 1453 | { |
| 1454 | int rv; |
| 1455 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1456 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | return 0; |
| 1458 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1459 | if (info->si_type == SI_BT) { |
| 1460 | rv = request_irq(info->irq, |
| 1461 | si_bt_irq_handler, |
Michael Opdenacker | aa5b2ba | 2014-01-24 14:00:50 -0600 | [diff] [blame] | 1462 | IRQF_SHARED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1463 | DEVICE_NAME, |
| 1464 | info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1465 | if (!rv) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1466 | /* Enable the interrupt in the BT interface. */ |
| 1467 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, |
| 1468 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
| 1469 | } else |
| 1470 | rv = request_irq(info->irq, |
| 1471 | si_irq_handler, |
Michael Opdenacker | aa5b2ba | 2014-01-24 14:00:50 -0600 | [diff] [blame] | 1472 | IRQF_SHARED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1473 | DEVICE_NAME, |
| 1474 | info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1476 | dev_warn(info->dev, "%s unable to claim interrupt %d," |
| 1477 | " running polled\n", |
| 1478 | DEVICE_NAME, info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | info->irq = 0; |
| 1480 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1481 | info->irq_cleanup = std_irq_cleanup; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1482 | dev_info(info->dev, "Using irq %d\n", info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | } |
| 1484 | |
| 1485 | return rv; |
| 1486 | } |
| 1487 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1488 | 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] | 1489 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1490 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1492 | return inb(addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | } |
| 1494 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1495 | 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] | 1496 | unsigned char b) |
| 1497 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1498 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1500 | outb(b, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | } |
| 1502 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1503 | 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] | 1504 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1505 | unsigned int addr = io->addr_data; |
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 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | } |
| 1509 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1510 | 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] | 1511 | unsigned char b) |
| 1512 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1513 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1515 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | } |
| 1517 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1518 | 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] | 1519 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1520 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1522 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | } |
| 1524 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1525 | 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] | 1526 | unsigned char b) |
| 1527 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1528 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1530 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | } |
| 1532 | |
| 1533 | static void port_cleanup(struct smi_info *info) |
| 1534 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1535 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1536 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1538 | if (addr) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1539 | for (idx = 0; idx < info->io_size; idx++) |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1540 | release_region(addr + idx * info->io.regspacing, |
| 1541 | info->io.regsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | } |
| 1544 | |
| 1545 | static int port_setup(struct smi_info *info) |
| 1546 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1547 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1548 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1550 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | return -ENODEV; |
| 1552 | |
| 1553 | info->io_cleanup = port_cleanup; |
| 1554 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1555 | /* |
| 1556 | * Figure out the actual inb/inw/inl/etc routine to use based |
| 1557 | * upon the register size. |
| 1558 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | switch (info->io.regsize) { |
| 1560 | case 1: |
| 1561 | info->io.inputb = port_inb; |
| 1562 | info->io.outputb = port_outb; |
| 1563 | break; |
| 1564 | case 2: |
| 1565 | info->io.inputb = port_inw; |
| 1566 | info->io.outputb = port_outw; |
| 1567 | break; |
| 1568 | case 4: |
| 1569 | info->io.inputb = port_inl; |
| 1570 | info->io.outputb = port_outl; |
| 1571 | break; |
| 1572 | default: |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1573 | dev_warn(info->dev, "Invalid register size: %d\n", |
| 1574 | info->io.regsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | return -EINVAL; |
| 1576 | } |
| 1577 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1578 | /* |
| 1579 | * Some BIOSes reserve disjoint I/O regions in their ACPI |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1580 | * tables. This causes problems when trying to register the |
| 1581 | * entire I/O region. Therefore we must register each I/O |
| 1582 | * port separately. |
| 1583 | */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1584 | for (idx = 0; idx < info->io_size; idx++) { |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1585 | if (request_region(addr + idx * info->io.regspacing, |
| 1586 | info->io.regsize, DEVICE_NAME) == NULL) { |
| 1587 | /* Undo allocations */ |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 1588 | while (idx--) |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1589 | release_region(addr + idx * info->io.regspacing, |
| 1590 | info->io.regsize); |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1591 | return -EIO; |
| 1592 | } |
| 1593 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | return 0; |
| 1595 | } |
| 1596 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1597 | static unsigned char intf_mem_inb(const struct si_sm_io *io, |
| 1598 | unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | { |
| 1600 | return readb((io->addr)+(offset * io->regspacing)); |
| 1601 | } |
| 1602 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1603 | static void intf_mem_outb(const struct si_sm_io *io, unsigned int offset, |
| 1604 | unsigned char b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | { |
| 1606 | writeb(b, (io->addr)+(offset * io->regspacing)); |
| 1607 | } |
| 1608 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1609 | static unsigned char intf_mem_inw(const struct si_sm_io *io, |
| 1610 | unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | { |
| 1612 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1613 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | } |
| 1615 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1616 | static void intf_mem_outw(const struct si_sm_io *io, unsigned int offset, |
| 1617 | unsigned char b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | { |
| 1619 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1620 | } |
| 1621 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1622 | static unsigned char intf_mem_inl(const struct si_sm_io *io, |
| 1623 | unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | { |
| 1625 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1626 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | } |
| 1628 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1629 | static void intf_mem_outl(const struct si_sm_io *io, unsigned int offset, |
| 1630 | unsigned char b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | { |
| 1632 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1633 | } |
| 1634 | |
| 1635 | #ifdef readq |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1636 | 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] | 1637 | { |
| 1638 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1639 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | } |
| 1641 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 1642 | 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] | 1643 | unsigned char b) |
| 1644 | { |
| 1645 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1646 | } |
| 1647 | #endif |
| 1648 | |
Corey Minyard | 57a38f1 | 2016-04-26 22:25:12 -0500 | [diff] [blame] | 1649 | static void mem_region_cleanup(struct smi_info *info, int num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1651 | unsigned long addr = info->io.addr_data; |
Corey Minyard | 57a38f1 | 2016-04-26 22:25:12 -0500 | [diff] [blame] | 1652 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | |
Corey Minyard | 57a38f1 | 2016-04-26 22:25:12 -0500 | [diff] [blame] | 1654 | for (idx = 0; idx < num; idx++) |
| 1655 | release_mem_region(addr + idx * info->io.regspacing, |
| 1656 | info->io.regsize); |
| 1657 | } |
| 1658 | |
| 1659 | static void mem_cleanup(struct smi_info *info) |
| 1660 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | if (info->io.addr) { |
| 1662 | iounmap(info->io.addr); |
Corey Minyard | 57a38f1 | 2016-04-26 22:25:12 -0500 | [diff] [blame] | 1663 | mem_region_cleanup(info, info->io_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | } |
| 1666 | |
| 1667 | static int mem_setup(struct smi_info *info) |
| 1668 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1669 | unsigned long addr = info->io.addr_data; |
Corey Minyard | 57a38f1 | 2016-04-26 22:25:12 -0500 | [diff] [blame] | 1670 | int mapsize, idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1672 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | return -ENODEV; |
| 1674 | |
| 1675 | info->io_cleanup = mem_cleanup; |
| 1676 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1677 | /* |
| 1678 | * Figure out the actual readb/readw/readl/etc routine to use based |
| 1679 | * upon the register size. |
| 1680 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | switch (info->io.regsize) { |
| 1682 | case 1: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1683 | info->io.inputb = intf_mem_inb; |
| 1684 | info->io.outputb = intf_mem_outb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | break; |
| 1686 | case 2: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1687 | info->io.inputb = intf_mem_inw; |
| 1688 | info->io.outputb = intf_mem_outw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | break; |
| 1690 | case 4: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1691 | info->io.inputb = intf_mem_inl; |
| 1692 | info->io.outputb = intf_mem_outl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | break; |
| 1694 | #ifdef readq |
| 1695 | case 8: |
| 1696 | info->io.inputb = mem_inq; |
| 1697 | info->io.outputb = mem_outq; |
| 1698 | break; |
| 1699 | #endif |
| 1700 | default: |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 1701 | dev_warn(info->dev, "Invalid register size: %d\n", |
| 1702 | info->io.regsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | return -EINVAL; |
| 1704 | } |
| 1705 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1706 | /* |
Corey Minyard | 57a38f1 | 2016-04-26 22:25:12 -0500 | [diff] [blame] | 1707 | * Some BIOSes reserve disjoint memory regions in their ACPI |
| 1708 | * tables. This causes problems when trying to request the |
| 1709 | * entire region. Therefore we must request each register |
| 1710 | * separately. |
| 1711 | */ |
| 1712 | for (idx = 0; idx < info->io_size; idx++) { |
| 1713 | if (request_mem_region(addr + idx * info->io.regspacing, |
| 1714 | info->io.regsize, DEVICE_NAME) == NULL) { |
| 1715 | /* Undo allocations */ |
| 1716 | mem_region_cleanup(info, idx); |
| 1717 | return -EIO; |
| 1718 | } |
| 1719 | } |
| 1720 | |
| 1721 | /* |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1722 | * Calculate the total amount of memory to claim. This is an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | * unusual looking calculation, but it avoids claiming any |
| 1724 | * more memory than it has to. It will claim everything |
| 1725 | * between the first address to the end of the last full |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1726 | * register. |
| 1727 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | mapsize = ((info->io_size * info->io.regspacing) |
| 1729 | - (info->io.regspacing - info->io.regsize)); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1730 | info->io.addr = ioremap(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | if (info->io.addr == NULL) { |
Corey Minyard | 57a38f1 | 2016-04-26 22:25:12 -0500 | [diff] [blame] | 1732 | mem_region_cleanup(info, info->io_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | return -EIO; |
| 1734 | } |
| 1735 | return 0; |
| 1736 | } |
| 1737 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1738 | /* |
| 1739 | * Parms come in as <op1>[:op2[:op3...]]. ops are: |
| 1740 | * add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]] |
| 1741 | * Options are: |
| 1742 | * rsp=<regspacing> |
| 1743 | * rsi=<regsize> |
| 1744 | * rsh=<regshift> |
| 1745 | * irq=<irq> |
| 1746 | * ipmb=<ipmb addr> |
| 1747 | */ |
| 1748 | enum hotmod_op { HM_ADD, HM_REMOVE }; |
| 1749 | struct hotmod_vals { |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 1750 | const char *name; |
| 1751 | const int val; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1752 | }; |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 1753 | |
| 1754 | static const struct hotmod_vals hotmod_ops[] = { |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1755 | { "add", HM_ADD }, |
| 1756 | { "remove", HM_REMOVE }, |
| 1757 | { NULL } |
| 1758 | }; |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 1759 | |
| 1760 | static const struct hotmod_vals hotmod_si[] = { |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1761 | { "kcs", SI_KCS }, |
| 1762 | { "smic", SI_SMIC }, |
| 1763 | { "bt", SI_BT }, |
| 1764 | { NULL } |
| 1765 | }; |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 1766 | |
| 1767 | static const struct hotmod_vals hotmod_as[] = { |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1768 | { "mem", IPMI_MEM_ADDR_SPACE }, |
| 1769 | { "i/o", IPMI_IO_ADDR_SPACE }, |
| 1770 | { NULL } |
| 1771 | }; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1772 | |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 1773 | static int parse_str(const struct hotmod_vals *v, int *val, char *name, |
| 1774 | char **curr) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1775 | { |
| 1776 | char *s; |
| 1777 | int i; |
| 1778 | |
| 1779 | s = strchr(*curr, ','); |
| 1780 | if (!s) { |
| 1781 | printk(KERN_WARNING PFX "No hotmod %s given.\n", name); |
| 1782 | return -EINVAL; |
| 1783 | } |
| 1784 | *s = '\0'; |
| 1785 | s++; |
Corey Minyard | ceb51ca | 2014-10-10 17:45:45 -0500 | [diff] [blame] | 1786 | for (i = 0; v[i].name; i++) { |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1787 | if (strcmp(*curr, v[i].name) == 0) { |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1788 | *val = v[i].val; |
| 1789 | *curr = s; |
| 1790 | return 0; |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | printk(KERN_WARNING PFX "Invalid hotmod %s '%s'\n", name, *curr); |
| 1795 | return -EINVAL; |
| 1796 | } |
| 1797 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1798 | static int check_hotmod_int_op(const char *curr, const char *option, |
| 1799 | const char *name, int *val) |
| 1800 | { |
| 1801 | char *n; |
| 1802 | |
| 1803 | if (strcmp(curr, name) == 0) { |
| 1804 | if (!option) { |
| 1805 | printk(KERN_WARNING PFX |
| 1806 | "No option given for '%s'\n", |
| 1807 | curr); |
| 1808 | return -EINVAL; |
| 1809 | } |
| 1810 | *val = simple_strtoul(option, &n, 0); |
| 1811 | if ((*n != '\0') || (*option == '\0')) { |
| 1812 | printk(KERN_WARNING PFX |
| 1813 | "Bad option given for '%s'\n", |
| 1814 | curr); |
| 1815 | return -EINVAL; |
| 1816 | } |
| 1817 | return 1; |
| 1818 | } |
| 1819 | return 0; |
| 1820 | } |
| 1821 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1822 | static struct smi_info *smi_info_alloc(void) |
| 1823 | { |
| 1824 | struct smi_info *info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1825 | |
Corey Minyard | f60adf4 | 2012-03-28 14:42:50 -0700 | [diff] [blame] | 1826 | if (info) |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1827 | spin_lock_init(&info->si_lock); |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1828 | return info; |
| 1829 | } |
| 1830 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1831 | static int hotmod_handler(const char *val, struct kernel_param *kp) |
| 1832 | { |
| 1833 | char *str = kstrdup(val, GFP_KERNEL); |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1834 | int rv; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1835 | char *next, *curr, *s, *n, *o; |
| 1836 | enum hotmod_op op; |
| 1837 | enum si_type si_type; |
| 1838 | int addr_space; |
| 1839 | unsigned long addr; |
| 1840 | int regspacing; |
| 1841 | int regsize; |
| 1842 | int regshift; |
| 1843 | int irq; |
| 1844 | int ipmb; |
| 1845 | int ival; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1846 | int len; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1847 | struct smi_info *info; |
| 1848 | |
| 1849 | if (!str) |
| 1850 | return -ENOMEM; |
| 1851 | |
| 1852 | /* Kill any trailing spaces, as we can get a "\n" from echo. */ |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1853 | len = strlen(str); |
| 1854 | ival = len - 1; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1855 | while ((ival >= 0) && isspace(str[ival])) { |
| 1856 | str[ival] = '\0'; |
| 1857 | ival--; |
| 1858 | } |
| 1859 | |
| 1860 | for (curr = str; curr; curr = next) { |
| 1861 | regspacing = 1; |
| 1862 | regsize = 1; |
| 1863 | regshift = 0; |
| 1864 | irq = 0; |
Bela Lubkin | 2f95d51 | 2010-03-10 15:23:07 -0800 | [diff] [blame] | 1865 | ipmb = 0; /* Choose the default if not specified */ |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1866 | |
| 1867 | next = strchr(curr, ':'); |
| 1868 | if (next) { |
| 1869 | *next = '\0'; |
| 1870 | next++; |
| 1871 | } |
| 1872 | |
| 1873 | rv = parse_str(hotmod_ops, &ival, "operation", &curr); |
| 1874 | if (rv) |
| 1875 | break; |
| 1876 | op = ival; |
| 1877 | |
| 1878 | rv = parse_str(hotmod_si, &ival, "interface type", &curr); |
| 1879 | if (rv) |
| 1880 | break; |
| 1881 | si_type = ival; |
| 1882 | |
| 1883 | rv = parse_str(hotmod_as, &addr_space, "address space", &curr); |
| 1884 | if (rv) |
| 1885 | break; |
| 1886 | |
| 1887 | s = strchr(curr, ','); |
| 1888 | if (s) { |
| 1889 | *s = '\0'; |
| 1890 | s++; |
| 1891 | } |
| 1892 | addr = simple_strtoul(curr, &n, 0); |
| 1893 | if ((*n != '\0') || (*curr == '\0')) { |
| 1894 | printk(KERN_WARNING PFX "Invalid hotmod address" |
| 1895 | " '%s'\n", curr); |
| 1896 | break; |
| 1897 | } |
| 1898 | |
| 1899 | while (s) { |
| 1900 | curr = s; |
| 1901 | s = strchr(curr, ','); |
| 1902 | if (s) { |
| 1903 | *s = '\0'; |
| 1904 | s++; |
| 1905 | } |
| 1906 | o = strchr(curr, '='); |
| 1907 | if (o) { |
| 1908 | *o = '\0'; |
| 1909 | o++; |
| 1910 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1911 | rv = check_hotmod_int_op(curr, o, "rsp", ®spacing); |
| 1912 | if (rv < 0) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1913 | goto out; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1914 | else if (rv) |
| 1915 | continue; |
| 1916 | rv = check_hotmod_int_op(curr, o, "rsi", ®size); |
| 1917 | if (rv < 0) |
| 1918 | goto out; |
| 1919 | else if (rv) |
| 1920 | continue; |
| 1921 | rv = check_hotmod_int_op(curr, o, "rsh", ®shift); |
| 1922 | if (rv < 0) |
| 1923 | goto out; |
| 1924 | else if (rv) |
| 1925 | continue; |
| 1926 | rv = check_hotmod_int_op(curr, o, "irq", &irq); |
| 1927 | if (rv < 0) |
| 1928 | goto out; |
| 1929 | else if (rv) |
| 1930 | continue; |
| 1931 | rv = check_hotmod_int_op(curr, o, "ipmb", &ipmb); |
| 1932 | if (rv < 0) |
| 1933 | goto out; |
| 1934 | else if (rv) |
| 1935 | continue; |
| 1936 | |
| 1937 | rv = -EINVAL; |
| 1938 | printk(KERN_WARNING PFX |
| 1939 | "Invalid hotmod option '%s'\n", |
| 1940 | curr); |
| 1941 | goto out; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1942 | } |
| 1943 | |
| 1944 | if (op == HM_ADD) { |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 1945 | info = smi_info_alloc(); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1946 | if (!info) { |
| 1947 | rv = -ENOMEM; |
| 1948 | goto out; |
| 1949 | } |
| 1950 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 1951 | info->addr_source = SI_HOTMOD; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1952 | info->si_type = si_type; |
| 1953 | info->io.addr_data = addr; |
| 1954 | info->io.addr_type = addr_space; |
| 1955 | if (addr_space == IPMI_MEM_ADDR_SPACE) |
| 1956 | info->io_setup = mem_setup; |
| 1957 | else |
| 1958 | info->io_setup = port_setup; |
| 1959 | |
| 1960 | info->io.addr = NULL; |
| 1961 | info->io.regspacing = regspacing; |
| 1962 | if (!info->io.regspacing) |
| 1963 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1964 | info->io.regsize = regsize; |
| 1965 | if (!info->io.regsize) |
| 1966 | info->io.regsize = DEFAULT_REGSPACING; |
| 1967 | info->io.regshift = regshift; |
| 1968 | info->irq = irq; |
| 1969 | if (info->irq) |
| 1970 | info->irq_setup = std_irq_setup; |
| 1971 | info->slave_addr = ipmb; |
| 1972 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 1973 | rv = add_smi(info); |
| 1974 | if (rv) { |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 1975 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 1976 | goto out; |
| 1977 | } |
| 1978 | rv = try_smi_init(info); |
| 1979 | if (rv) { |
| 1980 | cleanup_one_si(info); |
| 1981 | goto out; |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 1982 | } |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1983 | } else { |
| 1984 | /* remove */ |
| 1985 | struct smi_info *e, *tmp_e; |
| 1986 | |
| 1987 | mutex_lock(&smi_infos_lock); |
| 1988 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) { |
| 1989 | if (e->io.addr_type != addr_space) |
| 1990 | continue; |
| 1991 | if (e->si_type != si_type) |
| 1992 | continue; |
| 1993 | if (e->io.addr_data == addr) |
| 1994 | cleanup_one_si(e); |
| 1995 | } |
| 1996 | mutex_unlock(&smi_infos_lock); |
| 1997 | } |
| 1998 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1999 | rv = len; |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 2000 | out: |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2001 | kfree(str); |
| 2002 | return rv; |
| 2003 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2004 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2005 | static int hardcode_find_bmc(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | { |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2007 | int ret = -ENODEV; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2008 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | struct smi_info *info; |
| 2010 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2011 | for (i = 0; i < SI_MAX_PARMS; i++) { |
| 2012 | if (!ports[i] && !addrs[i]) |
| 2013 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2015 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2016 | if (!info) |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2017 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2019 | info->addr_source = SI_HARDCODED; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2020 | printk(KERN_INFO PFX "probing via hardcoded address\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2021 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2022 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2023 | info->si_type = SI_KCS; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2024 | } else if (strcmp(si_type[i], "smic") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2025 | info->si_type = SI_SMIC; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2026 | } else if (strcmp(si_type[i], "bt") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2027 | info->si_type = SI_BT; |
| 2028 | } else { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2029 | printk(KERN_WARNING PFX "Interface type specified " |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2030 | "for interface %d, was invalid: %s\n", |
| 2031 | i, si_type[i]); |
| 2032 | kfree(info); |
| 2033 | continue; |
| 2034 | } |
| 2035 | |
| 2036 | if (ports[i]) { |
| 2037 | /* An I/O port */ |
| 2038 | info->io_setup = port_setup; |
| 2039 | info->io.addr_data = ports[i]; |
| 2040 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2041 | } else if (addrs[i]) { |
| 2042 | /* A memory port */ |
| 2043 | info->io_setup = mem_setup; |
| 2044 | info->io.addr_data = addrs[i]; |
| 2045 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2046 | } else { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2047 | printk(KERN_WARNING PFX "Interface type specified " |
| 2048 | "for interface %d, but port and address were " |
| 2049 | "not set or set to zero.\n", i); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2050 | kfree(info); |
| 2051 | continue; |
| 2052 | } |
| 2053 | |
| 2054 | info->io.addr = NULL; |
| 2055 | info->io.regspacing = regspacings[i]; |
| 2056 | if (!info->io.regspacing) |
| 2057 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2058 | info->io.regsize = regsizes[i]; |
| 2059 | if (!info->io.regsize) |
| 2060 | info->io.regsize = DEFAULT_REGSPACING; |
| 2061 | info->io.regshift = regshifts[i]; |
| 2062 | info->irq = irqs[i]; |
| 2063 | if (info->irq) |
| 2064 | info->irq_setup = std_irq_setup; |
Bela Lubkin | 2f95d51 | 2010-03-10 15:23:07 -0800 | [diff] [blame] | 2065 | info->slave_addr = slave_addrs[i]; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2066 | |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2067 | if (!add_smi(info)) { |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 2068 | if (try_smi_init(info)) |
| 2069 | cleanup_one_si(info); |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2070 | ret = 0; |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2071 | } else { |
| 2072 | kfree(info); |
| 2073 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2074 | } |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2075 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | } |
| 2077 | |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 2078 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2080 | /* |
| 2081 | * Once we get an ACPI failure, we don't try any more, because we go |
| 2082 | * through the tables sequentially. Once we don't find a table, there |
| 2083 | * are no more. |
| 2084 | */ |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 2085 | static int acpi_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2086 | |
| 2087 | /* For GPE-type interrupts. */ |
Lin Ming | 8b6cd8a | 2010-12-13 13:38:46 +0800 | [diff] [blame] | 2088 | static u32 ipmi_acpi_gpe(acpi_handle gpe_device, |
| 2089 | u32 gpe_number, void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | { |
| 2091 | struct smi_info *smi_info = context; |
| 2092 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | |
| 2094 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 2095 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 2096 | smi_inc_stat(smi_info, interrupts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | |
John Stultz | f93aae9 | 2015-01-07 14:24:28 -0800 | [diff] [blame] | 2098 | debug_timestamp("ACPI_GPE"); |
| 2099 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 2102 | |
| 2103 | return ACPI_INTERRUPT_HANDLED; |
| 2104 | } |
| 2105 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2106 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
| 2107 | { |
| 2108 | if (!info->irq) |
| 2109 | return; |
| 2110 | |
| 2111 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); |
| 2112 | } |
| 2113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2114 | static int acpi_gpe_irq_setup(struct smi_info *info) |
| 2115 | { |
| 2116 | acpi_status status; |
| 2117 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2118 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2119 | return 0; |
| 2120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | status = acpi_install_gpe_handler(NULL, |
| 2122 | info->irq, |
| 2123 | ACPI_GPE_LEVEL_TRIGGERED, |
| 2124 | &ipmi_acpi_gpe, |
| 2125 | info); |
| 2126 | if (status != AE_OK) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2127 | dev_warn(info->dev, "%s unable to claim ACPI GPE %d," |
| 2128 | " running polled\n", DEVICE_NAME, info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | info->irq = 0; |
| 2130 | return -EINVAL; |
| 2131 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2132 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2133 | dev_info(info->dev, "Using ACPI GPE %d\n", info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | return 0; |
| 2135 | } |
| 2136 | } |
| 2137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2138 | /* |
| 2139 | * Defined at |
Justin P. Mattock | 631dd1a | 2010-10-18 11:03:14 +0200 | [diff] [blame] | 2140 | * http://h21007.www2.hp.com/portal/download/files/unprot/hpspmi.pdf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | */ |
| 2142 | struct SPMITable { |
| 2143 | s8 Signature[4]; |
| 2144 | u32 Length; |
| 2145 | u8 Revision; |
| 2146 | u8 Checksum; |
| 2147 | s8 OEMID[6]; |
| 2148 | s8 OEMTableID[8]; |
| 2149 | s8 OEMRevision[4]; |
| 2150 | s8 CreatorID[4]; |
| 2151 | s8 CreatorRevision[4]; |
| 2152 | u8 InterfaceType; |
| 2153 | u8 IPMIlegacy; |
| 2154 | s16 SpecificationRevision; |
| 2155 | |
| 2156 | /* |
| 2157 | * Bit 0 - SCI interrupt supported |
| 2158 | * Bit 1 - I/O APIC/SAPIC |
| 2159 | */ |
| 2160 | u8 InterruptType; |
| 2161 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2162 | /* |
| 2163 | * If bit 0 of InterruptType is set, then this is the SCI |
| 2164 | * interrupt in the GPEx_STS register. |
| 2165 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | u8 GPE; |
| 2167 | |
| 2168 | s16 Reserved; |
| 2169 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2170 | /* |
| 2171 | * If bit 1 of InterruptType is set, then this is the I/O |
| 2172 | * APIC/SAPIC interrupt. |
| 2173 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | u32 GlobalSystemInterrupt; |
| 2175 | |
| 2176 | /* The actual register address. */ |
| 2177 | struct acpi_generic_address addr; |
| 2178 | |
| 2179 | u8 UID[4]; |
| 2180 | |
| 2181 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ |
| 2182 | }; |
| 2183 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2184 | static int try_init_spmi(struct SPMITable *spmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | { |
| 2186 | struct smi_info *info; |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2187 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | if (spmi->IPMIlegacy != 1) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2190 | printk(KERN_INFO PFX "Bad SPMI legacy %d\n", spmi->IPMIlegacy); |
| 2191 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | } |
| 2193 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2194 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2195 | if (!info) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2196 | printk(KERN_ERR PFX "Could not allocate SI data (3)\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2197 | return -ENOMEM; |
| 2198 | } |
| 2199 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2200 | info->addr_source = SI_SPMI; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2201 | printk(KERN_INFO PFX "probing via SPMI\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | /* Figure out the interface type. */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2204 | switch (spmi->InterfaceType) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | case 1: /* KCS */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2206 | info->si_type = SI_KCS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | case 2: /* SMIC */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2209 | info->si_type = SI_SMIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | case 3: /* BT */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2212 | info->si_type = SI_BT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | break; |
Corey Minyard | ab42bf2 | 2014-10-09 07:12:08 -0500 | [diff] [blame] | 2214 | case 4: /* SSIF, just ignore */ |
| 2215 | kfree(info); |
| 2216 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | default: |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2218 | printk(KERN_INFO PFX "Unknown ACPI/SPMI SI type %d\n", |
| 2219 | spmi->InterfaceType); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2220 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | return -EIO; |
| 2222 | } |
| 2223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | if (spmi->InterruptType & 1) { |
| 2225 | /* We've got a GPE interrupt. */ |
| 2226 | info->irq = spmi->GPE; |
| 2227 | info->irq_setup = acpi_gpe_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | } else if (spmi->InterruptType & 2) { |
| 2229 | /* We've got an APIC/SAPIC interrupt. */ |
| 2230 | info->irq = spmi->GlobalSystemInterrupt; |
| 2231 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | } else { |
| 2233 | /* Use the default interrupt setting. */ |
| 2234 | info->irq = 0; |
| 2235 | info->irq_setup = NULL; |
| 2236 | } |
| 2237 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2238 | if (spmi->addr.bit_width) { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2239 | /* A (hopefully) properly formed register bit width. */ |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2240 | info->io.regspacing = spmi->addr.bit_width / 8; |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2241 | } else { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2242 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2243 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2244 | info->io.regsize = info->io.regspacing; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2245 | info->io.regshift = spmi->addr.bit_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2247 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | info->io_setup = mem_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 2249 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2250 | } else if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | info->io_setup = port_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 2252 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2253 | } else { |
| 2254 | kfree(info); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2255 | printk(KERN_WARNING PFX "Unknown ACPI I/O Address type\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | return -EIO; |
| 2257 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2258 | info->io.addr_data = spmi->addr.address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | |
Yinghai Lu | 7bb671e | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2260 | pr_info("ipmi_si: SPMI: %s %#lx regsize %d spacing %d irq %d\n", |
| 2261 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? "io" : "mem", |
| 2262 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2263 | info->irq); |
| 2264 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2265 | rv = add_smi(info); |
| 2266 | if (rv) |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2267 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2268 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2269 | return rv; |
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 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2272 | static void spmi_find_bmc(void) |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2273 | { |
| 2274 | acpi_status status; |
| 2275 | struct SPMITable *spmi; |
| 2276 | int i; |
| 2277 | |
| 2278 | if (acpi_disabled) |
| 2279 | return; |
| 2280 | |
| 2281 | if (acpi_failure) |
| 2282 | return; |
| 2283 | |
| 2284 | for (i = 0; ; i++) { |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2285 | status = acpi_get_table(ACPI_SIG_SPMI, i+1, |
| 2286 | (struct acpi_table_header **)&spmi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2287 | if (status != AE_OK) |
| 2288 | return; |
| 2289 | |
Bjorn Helgaas | 18a3e0b | 2009-11-17 17:05:29 -0700 | [diff] [blame] | 2290 | try_init_spmi(spmi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2291 | } |
| 2292 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | #endif |
| 2294 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2295 | #ifdef CONFIG_DMI |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2296 | struct dmi_ipmi_data { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | u8 type; |
| 2298 | u8 addr_space; |
| 2299 | unsigned long base_addr; |
| 2300 | u8 irq; |
| 2301 | u8 offset; |
| 2302 | u8 slave_addr; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2303 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2304 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2305 | static int decode_dmi(const struct dmi_header *dm, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2306 | struct dmi_ipmi_data *dmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2308 | const u8 *data = (const u8 *)dm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2309 | unsigned long base_addr; |
| 2310 | u8 reg_spacing; |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2311 | u8 len = dm->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2313 | dmi->type = data[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2314 | |
| 2315 | memcpy(&base_addr, data+8, sizeof(unsigned long)); |
| 2316 | if (len >= 0x11) { |
| 2317 | if (base_addr & 1) { |
| 2318 | /* I/O */ |
| 2319 | base_addr &= 0xFFFE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2320 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2321 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | /* Memory */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2323 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2324 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | /* If bit 4 of byte 0x10 is set, then the lsb for the address |
| 2326 | is odd. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2327 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2329 | dmi->irq = data[0x11]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2330 | |
| 2331 | /* The top two bits of byte 0x10 hold the register spacing. */ |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2332 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2333 | switch (reg_spacing) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2334 | case 0x00: /* Byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2335 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | break; |
| 2337 | case 0x01: /* 32-bit boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2338 | dmi->offset = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2339 | break; |
| 2340 | case 0x02: /* 16-byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2341 | dmi->offset = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | break; |
| 2343 | default: |
| 2344 | /* Some other interface, just ignore it. */ |
| 2345 | return -EIO; |
| 2346 | } |
| 2347 | } else { |
| 2348 | /* Old DMI spec. */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2349 | /* |
| 2350 | * Note that technically, the lower bit of the base |
Corey Minyard | 9206880 | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2351 | * address should be 1 if the address is I/O and 0 if |
| 2352 | * the address is in memory. So many systems get that |
| 2353 | * wrong (and all that I have seen are I/O) so we just |
| 2354 | * ignore that bit and assume I/O. Systems that use |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2355 | * memory should use the newer spec, anyway. |
| 2356 | */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2357 | dmi->base_addr = base_addr & 0xfffe; |
| 2358 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
| 2359 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | } |
| 2361 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2362 | dmi->slave_addr = data[6]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2364 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2365 | } |
| 2366 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2367 | static void try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2368 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2369 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2371 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2372 | if (!info) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2373 | printk(KERN_ERR PFX "Could not allocate SI data\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2374 | return; |
| 2375 | } |
| 2376 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2377 | info->addr_source = SI_SMBIOS; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2378 | printk(KERN_INFO PFX "probing via SMBIOS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2379 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2380 | switch (ipmi_data->type) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2381 | case 0x01: /* KCS */ |
| 2382 | info->si_type = SI_KCS; |
| 2383 | break; |
| 2384 | case 0x02: /* SMIC */ |
| 2385 | info->si_type = SI_SMIC; |
| 2386 | break; |
| 2387 | case 0x03: /* BT */ |
| 2388 | info->si_type = SI_BT; |
| 2389 | break; |
| 2390 | default: |
Jesper Juhl | 80cd692 | 2007-07-31 00:39:05 -0700 | [diff] [blame] | 2391 | kfree(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2392 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2393 | } |
| 2394 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2395 | switch (ipmi_data->addr_space) { |
| 2396 | case IPMI_MEM_ADDR_SPACE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | info->io_setup = mem_setup; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2398 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2399 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2400 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2401 | case IPMI_IO_ADDR_SPACE: |
| 2402 | info->io_setup = port_setup; |
| 2403 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2404 | break; |
| 2405 | |
| 2406 | default: |
| 2407 | kfree(info); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2408 | printk(KERN_WARNING PFX "Unknown SMBIOS I/O Address type: %d\n", |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2409 | ipmi_data->addr_space); |
| 2410 | return; |
| 2411 | } |
| 2412 | info->io.addr_data = ipmi_data->base_addr; |
| 2413 | |
| 2414 | info->io.regspacing = ipmi_data->offset; |
| 2415 | if (!info->io.regspacing) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2417 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2418 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2419 | |
| 2420 | info->slave_addr = ipmi_data->slave_addr; |
| 2421 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2422 | info->irq = ipmi_data->irq; |
| 2423 | if (info->irq) |
| 2424 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2425 | |
Yinghai Lu | 7bb671e | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2426 | pr_info("ipmi_si: SMBIOS: %s %#lx regsize %d spacing %d irq %d\n", |
| 2427 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? "io" : "mem", |
| 2428 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2429 | info->irq); |
| 2430 | |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2431 | if (add_smi(info)) |
| 2432 | kfree(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2433 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2435 | static void dmi_find_bmc(void) |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2436 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2437 | const struct dmi_device *dev = NULL; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2438 | struct dmi_ipmi_data data; |
| 2439 | int rv; |
| 2440 | |
| 2441 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { |
Jeff Garzik | 397f4eb | 2006-10-03 01:13:52 -0700 | [diff] [blame] | 2442 | memset(&data, 0, sizeof(data)); |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2443 | rv = decode_dmi((const struct dmi_header *) dev->device_data, |
| 2444 | &data); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2445 | if (!rv) |
| 2446 | try_init_dmi(&data); |
| 2447 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2448 | } |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2449 | #endif /* CONFIG_DMI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | |
| 2451 | #ifdef CONFIG_PCI |
| 2452 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2453 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
| 2454 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 |
| 2455 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff |
| 2456 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 |
| 2457 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 |
| 2458 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 |
| 2459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2460 | #define PCI_HP_VENDOR_ID 0x103C |
| 2461 | #define PCI_MMC_DEVICE_ID 0x121A |
| 2462 | #define PCI_MMC_ADDR_CW 0x10 |
| 2463 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2464 | static void ipmi_pci_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2465 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2466 | struct pci_dev *pdev = info->addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2467 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2468 | pci_disable_device(pdev); |
| 2469 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2470 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2471 | static int ipmi_pci_probe_regspacing(struct smi_info *info) |
Corey Minyard | a6c16c2 | 2012-10-16 15:53:40 -0500 | [diff] [blame] | 2472 | { |
| 2473 | if (info->si_type == SI_KCS) { |
| 2474 | unsigned char status; |
| 2475 | int regspacing; |
| 2476 | |
| 2477 | info->io.regsize = DEFAULT_REGSIZE; |
| 2478 | info->io.regshift = 0; |
| 2479 | info->io_size = 2; |
| 2480 | info->handlers = &kcs_smi_handlers; |
| 2481 | |
| 2482 | /* detect 1, 4, 16byte spacing */ |
| 2483 | for (regspacing = DEFAULT_REGSPACING; regspacing <= 16;) { |
| 2484 | info->io.regspacing = regspacing; |
| 2485 | if (info->io_setup(info)) { |
| 2486 | dev_err(info->dev, |
| 2487 | "Could not setup I/O space\n"); |
| 2488 | return DEFAULT_REGSPACING; |
| 2489 | } |
| 2490 | /* write invalid cmd */ |
| 2491 | info->io.outputb(&info->io, 1, 0x10); |
| 2492 | /* read status back */ |
| 2493 | status = info->io.inputb(&info->io, 1); |
| 2494 | info->io_cleanup(info); |
| 2495 | if (status) |
| 2496 | return regspacing; |
| 2497 | regspacing *= 4; |
| 2498 | } |
| 2499 | } |
| 2500 | return DEFAULT_REGSPACING; |
| 2501 | } |
| 2502 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 2503 | static int ipmi_pci_probe(struct pci_dev *pdev, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2504 | const struct pci_device_id *ent) |
| 2505 | { |
| 2506 | int rv; |
| 2507 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; |
| 2508 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2510 | info = smi_info_alloc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2511 | if (!info) |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2512 | return -ENOMEM; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2513 | |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2514 | info->addr_source = SI_PCI; |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2515 | dev_info(&pdev->dev, "probing via PCI"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2516 | |
| 2517 | switch (class_type) { |
| 2518 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: |
| 2519 | info->si_type = SI_SMIC; |
| 2520 | break; |
| 2521 | |
| 2522 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
| 2523 | info->si_type = SI_KCS; |
| 2524 | break; |
| 2525 | |
| 2526 | case PCI_ERMC_CLASSCODE_TYPE_BT: |
| 2527 | info->si_type = SI_BT; |
| 2528 | break; |
| 2529 | |
| 2530 | default: |
| 2531 | kfree(info); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2532 | dev_info(&pdev->dev, "Unknown IPMI type: %d\n", class_type); |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2533 | return -ENOMEM; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2534 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2535 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2536 | rv = pci_enable_device(pdev); |
| 2537 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2538 | dev_err(&pdev->dev, "couldn't enable PCI device\n"); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2539 | kfree(info); |
| 2540 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2541 | } |
| 2542 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2543 | info->addr_source_cleanup = ipmi_pci_cleanup; |
| 2544 | info->addr_source_data = pdev; |
| 2545 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2546 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
| 2547 | info->io_setup = port_setup; |
| 2548 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2549 | } else { |
| 2550 | info->io_setup = mem_setup; |
| 2551 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2552 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2553 | info->io.addr_data = pci_resource_start(pdev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | |
Corey Minyard | a6c16c2 | 2012-10-16 15:53:40 -0500 | [diff] [blame] | 2555 | info->io.regspacing = ipmi_pci_probe_regspacing(info); |
| 2556 | info->io.regsize = DEFAULT_REGSIZE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2557 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2559 | info->irq = pdev->irq; |
| 2560 | if (info->irq) |
| 2561 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2563 | info->dev = &pdev->dev; |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2564 | pci_set_drvdata(pdev, info); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2565 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2566 | dev_info(&pdev->dev, "%pR regsize %d spacing %d irq %d\n", |
| 2567 | &pdev->resource[0], info->io.regsize, info->io.regspacing, |
| 2568 | info->irq); |
| 2569 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2570 | rv = add_smi(info); |
| 2571 | if (rv) { |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2572 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2573 | pci_disable_device(pdev); |
| 2574 | } |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2575 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2576 | return rv; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2577 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2578 | |
Bill Pemberton | 39af33f | 2012-11-19 13:26:26 -0500 | [diff] [blame] | 2579 | static void ipmi_pci_remove(struct pci_dev *pdev) |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2580 | { |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2581 | struct smi_info *info = pci_get_drvdata(pdev); |
| 2582 | cleanup_one_si(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2583 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2584 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 2585 | static const struct pci_device_id ipmi_pci_devices[] = { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2586 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, |
Kees Cook | 248bdd5 | 2007-09-18 22:46:32 -0700 | [diff] [blame] | 2587 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) }, |
| 2588 | { 0, } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2589 | }; |
| 2590 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); |
| 2591 | |
| 2592 | static struct pci_driver ipmi_pci_driver = { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2593 | .name = DEVICE_NAME, |
| 2594 | .id_table = ipmi_pci_devices, |
| 2595 | .probe = ipmi_pci_probe, |
Greg Kroah-Hartman | bcd2982 | 2012-12-21 15:12:08 -0800 | [diff] [blame] | 2596 | .remove = ipmi_pci_remove, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2597 | }; |
| 2598 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2600 | #ifdef CONFIG_OF |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2601 | static const struct of_device_id of_ipmi_match[] = { |
| 2602 | { .type = "ipmi", .compatible = "ipmi-kcs", |
| 2603 | .data = (void *)(unsigned long) SI_KCS }, |
| 2604 | { .type = "ipmi", .compatible = "ipmi-smic", |
| 2605 | .data = (void *)(unsigned long) SI_SMIC }, |
| 2606 | { .type = "ipmi", .compatible = "ipmi-bt", |
| 2607 | .data = (void *)(unsigned long) SI_BT }, |
| 2608 | {}, |
| 2609 | }; |
Luis de Bethencourt | 66f4401 | 2015-09-19 16:43:23 +0100 | [diff] [blame] | 2610 | MODULE_DEVICE_TABLE(of, of_ipmi_match); |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2611 | |
| 2612 | static int of_ipmi_probe(struct platform_device *dev) |
| 2613 | { |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 2614 | const struct of_device_id *match; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2615 | struct smi_info *info; |
| 2616 | struct resource resource; |
Rob Herring | da81c3b | 2010-11-16 14:33:50 -0600 | [diff] [blame] | 2617 | const __be32 *regsize, *regspacing, *regshift; |
Grant Likely | 61c7a08 | 2010-04-13 16:12:29 -0700 | [diff] [blame] | 2618 | struct device_node *np = dev->dev.of_node; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2619 | int ret; |
| 2620 | int proplen; |
| 2621 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2622 | dev_info(&dev->dev, "probing via device tree\n"); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2623 | |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2624 | match = of_match_device(of_ipmi_match, &dev->dev); |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 2625 | if (!match) |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2626 | return -ENODEV; |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2627 | |
Benjamin Herrenschmidt | 08dc416 | 2014-10-06 14:17:51 -0500 | [diff] [blame] | 2628 | if (!of_device_is_available(np)) |
| 2629 | return -EINVAL; |
| 2630 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2631 | ret = of_address_to_resource(np, 0, &resource); |
| 2632 | if (ret) { |
| 2633 | dev_warn(&dev->dev, PFX "invalid address from OF\n"); |
| 2634 | return ret; |
| 2635 | } |
| 2636 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2637 | regsize = of_get_property(np, "reg-size", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2638 | if (regsize && proplen != 4) { |
| 2639 | dev_warn(&dev->dev, PFX "invalid regsize from OF\n"); |
| 2640 | return -EINVAL; |
| 2641 | } |
| 2642 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2643 | regspacing = of_get_property(np, "reg-spacing", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2644 | if (regspacing && proplen != 4) { |
| 2645 | dev_warn(&dev->dev, PFX "invalid regspacing from OF\n"); |
| 2646 | return -EINVAL; |
| 2647 | } |
| 2648 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2649 | regshift = of_get_property(np, "reg-shift", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2650 | if (regshift && proplen != 4) { |
| 2651 | dev_warn(&dev->dev, PFX "invalid regshift from OF\n"); |
| 2652 | return -EINVAL; |
| 2653 | } |
| 2654 | |
Eric Dumazet | de5e2dd | 2010-10-26 14:21:17 -0700 | [diff] [blame] | 2655 | info = smi_info_alloc(); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2656 | |
| 2657 | if (!info) { |
| 2658 | dev_err(&dev->dev, |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2659 | "could not allocate memory for OF probe\n"); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2660 | return -ENOMEM; |
| 2661 | } |
| 2662 | |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 2663 | info->si_type = (enum si_type) match->data; |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 2664 | info->addr_source = SI_DEVICETREE; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2665 | info->irq_setup = std_irq_setup; |
| 2666 | |
Nate Case | 3b7ec11 | 2008-05-14 16:05:39 -0700 | [diff] [blame] | 2667 | if (resource.flags & IORESOURCE_IO) { |
| 2668 | info->io_setup = port_setup; |
| 2669 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2670 | } else { |
| 2671 | info->io_setup = mem_setup; |
| 2672 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2673 | } |
| 2674 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2675 | info->io.addr_data = resource.start; |
| 2676 | |
Rob Herring | da81c3b | 2010-11-16 14:33:50 -0600 | [diff] [blame] | 2677 | info->io.regsize = regsize ? be32_to_cpup(regsize) : DEFAULT_REGSIZE; |
| 2678 | info->io.regspacing = regspacing ? be32_to_cpup(regspacing) : DEFAULT_REGSPACING; |
| 2679 | info->io.regshift = regshift ? be32_to_cpup(regshift) : 0; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2680 | |
Grant Likely | 61c7a08 | 2010-04-13 16:12:29 -0700 | [diff] [blame] | 2681 | info->irq = irq_of_parse_and_map(dev->dev.of_node, 0); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2682 | info->dev = &dev->dev; |
| 2683 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 2684 | 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] | 2685 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2686 | info->irq); |
| 2687 | |
Greg Kroah-Hartman | 9de33df | 2009-05-04 12:40:54 -0700 | [diff] [blame] | 2688 | dev_set_drvdata(&dev->dev, info); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2689 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2690 | ret = add_smi(info); |
| 2691 | if (ret) { |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2692 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2693 | return ret; |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2694 | } |
Yinghai Lu | 7faefea | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 2695 | return 0; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2696 | } |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2697 | #else |
| 2698 | #define of_ipmi_match NULL |
| 2699 | static int of_ipmi_probe(struct platform_device *dev) |
| 2700 | { |
| 2701 | return -ENODEV; |
| 2702 | } |
| 2703 | #endif |
| 2704 | |
| 2705 | #ifdef CONFIG_ACPI |
| 2706 | static int acpi_ipmi_probe(struct platform_device *dev) |
| 2707 | { |
| 2708 | struct smi_info *info; |
| 2709 | struct resource *res, *res_second; |
| 2710 | acpi_handle handle; |
| 2711 | acpi_status status; |
| 2712 | unsigned long long tmp; |
| 2713 | int rv = -EINVAL; |
| 2714 | |
Joe Lawrence | 9f0257b | 2016-02-18 16:02:54 -0500 | [diff] [blame] | 2715 | if (!si_tryacpi) |
| 2716 | return 0; |
| 2717 | |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2718 | handle = ACPI_HANDLE(&dev->dev); |
| 2719 | if (!handle) |
| 2720 | return -ENODEV; |
| 2721 | |
| 2722 | info = smi_info_alloc(); |
| 2723 | if (!info) |
| 2724 | return -ENOMEM; |
| 2725 | |
| 2726 | info->addr_source = SI_ACPI; |
| 2727 | dev_info(&dev->dev, PFX "probing via ACPI\n"); |
| 2728 | |
| 2729 | info->addr_info.acpi_info.acpi_handle = handle; |
| 2730 | |
| 2731 | /* _IFT tells us the interface type: KCS, BT, etc */ |
| 2732 | status = acpi_evaluate_integer(handle, "_IFT", NULL, &tmp); |
| 2733 | if (ACPI_FAILURE(status)) { |
| 2734 | dev_err(&dev->dev, "Could not find ACPI IPMI interface type\n"); |
| 2735 | goto err_free; |
| 2736 | } |
| 2737 | |
| 2738 | switch (tmp) { |
| 2739 | case 1: |
| 2740 | info->si_type = SI_KCS; |
| 2741 | break; |
| 2742 | case 2: |
| 2743 | info->si_type = SI_SMIC; |
| 2744 | break; |
| 2745 | case 3: |
| 2746 | info->si_type = SI_BT; |
| 2747 | break; |
| 2748 | case 4: /* SSIF, just ignore */ |
| 2749 | rv = -ENODEV; |
| 2750 | goto err_free; |
| 2751 | default: |
| 2752 | dev_info(&dev->dev, "unknown IPMI type %lld\n", tmp); |
| 2753 | goto err_free; |
| 2754 | } |
| 2755 | |
| 2756 | res = platform_get_resource(dev, IORESOURCE_IO, 0); |
| 2757 | if (res) { |
| 2758 | info->io_setup = port_setup; |
| 2759 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2760 | } else { |
| 2761 | res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| 2762 | if (res) { |
| 2763 | info->io_setup = mem_setup; |
| 2764 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2765 | } |
| 2766 | } |
| 2767 | if (!res) { |
| 2768 | dev_err(&dev->dev, "no I/O or memory address\n"); |
| 2769 | goto err_free; |
| 2770 | } |
| 2771 | info->io.addr_data = res->start; |
| 2772 | |
| 2773 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2774 | res_second = platform_get_resource(dev, |
| 2775 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? |
| 2776 | IORESOURCE_IO : IORESOURCE_MEM, |
| 2777 | 1); |
| 2778 | if (res_second) { |
| 2779 | if (res_second->start > info->io.addr_data) |
| 2780 | info->io.regspacing = |
| 2781 | res_second->start - info->io.addr_data; |
| 2782 | } |
| 2783 | info->io.regsize = DEFAULT_REGSPACING; |
| 2784 | info->io.regshift = 0; |
| 2785 | |
| 2786 | /* If _GPE exists, use it; otherwise use standard interrupts */ |
| 2787 | status = acpi_evaluate_integer(handle, "_GPE", NULL, &tmp); |
| 2788 | if (ACPI_SUCCESS(status)) { |
| 2789 | info->irq = tmp; |
| 2790 | info->irq_setup = acpi_gpe_irq_setup; |
| 2791 | } else { |
| 2792 | int irq = platform_get_irq(dev, 0); |
| 2793 | |
| 2794 | if (irq > 0) { |
| 2795 | info->irq = irq; |
| 2796 | info->irq_setup = std_irq_setup; |
| 2797 | } |
| 2798 | } |
| 2799 | |
| 2800 | info->dev = &dev->dev; |
| 2801 | platform_set_drvdata(dev, info); |
| 2802 | |
| 2803 | dev_info(info->dev, "%pR regsize %d spacing %d irq %d\n", |
| 2804 | res, info->io.regsize, info->io.regspacing, |
| 2805 | info->irq); |
| 2806 | |
| 2807 | rv = add_smi(info); |
| 2808 | if (rv) |
| 2809 | kfree(info); |
| 2810 | |
| 2811 | return rv; |
| 2812 | |
| 2813 | err_free: |
| 2814 | kfree(info); |
| 2815 | return rv; |
| 2816 | } |
| 2817 | |
Corey Minyard | 81d02b7 | 2015-06-13 10:34:25 -0500 | [diff] [blame] | 2818 | static const struct acpi_device_id acpi_ipmi_match[] = { |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2819 | { "IPI0001", 0 }, |
| 2820 | { }, |
| 2821 | }; |
| 2822 | MODULE_DEVICE_TABLE(acpi, acpi_ipmi_match); |
| 2823 | #else |
| 2824 | static int acpi_ipmi_probe(struct platform_device *dev) |
| 2825 | { |
| 2826 | return -ENODEV; |
| 2827 | } |
| 2828 | #endif |
| 2829 | |
| 2830 | static int ipmi_probe(struct platform_device *dev) |
| 2831 | { |
| 2832 | if (of_ipmi_probe(dev) == 0) |
| 2833 | return 0; |
| 2834 | |
| 2835 | return acpi_ipmi_probe(dev); |
| 2836 | } |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2837 | |
Bill Pemberton | 39af33f | 2012-11-19 13:26:26 -0500 | [diff] [blame] | 2838 | static int ipmi_remove(struct platform_device *dev) |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2839 | { |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2840 | struct smi_info *info = dev_get_drvdata(&dev->dev); |
| 2841 | |
Markus Elfring | a793089 | 2015-06-27 18:12:14 +0200 | [diff] [blame] | 2842 | cleanup_one_si(info); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2843 | return 0; |
| 2844 | } |
| 2845 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2846 | static struct platform_driver ipmi_driver = { |
Grant Likely | 4018294 | 2010-04-13 16:13:02 -0700 | [diff] [blame] | 2847 | .driver = { |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2848 | .name = DEVICE_NAME, |
Corey Minyard | 0fbcf4a | 2015-06-09 16:51:46 -0500 | [diff] [blame] | 2849 | .of_match_table = of_ipmi_match, |
| 2850 | .acpi_match_table = ACPI_PTR(acpi_ipmi_match), |
Grant Likely | 4018294 | 2010-04-13 16:13:02 -0700 | [diff] [blame] | 2851 | }, |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 2852 | .probe = ipmi_probe, |
Greg Kroah-Hartman | bcd2982 | 2012-12-21 15:12:08 -0800 | [diff] [blame] | 2853 | .remove = ipmi_remove, |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2854 | }; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2855 | |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2856 | #ifdef CONFIG_PARISC |
| 2857 | static int ipmi_parisc_probe(struct parisc_device *dev) |
| 2858 | { |
| 2859 | struct smi_info *info; |
Geert Uytterhoeven | dfa1942 | 2014-01-28 20:12:35 +0100 | [diff] [blame] | 2860 | int rv; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2861 | |
| 2862 | info = smi_info_alloc(); |
| 2863 | |
| 2864 | if (!info) { |
| 2865 | dev_err(&dev->dev, |
| 2866 | "could not allocate memory for PARISC probe\n"); |
| 2867 | return -ENOMEM; |
| 2868 | } |
| 2869 | |
| 2870 | info->si_type = SI_KCS; |
| 2871 | info->addr_source = SI_DEVICETREE; |
| 2872 | info->io_setup = mem_setup; |
| 2873 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2874 | info->io.addr_data = dev->hpa.start; |
| 2875 | info->io.regsize = 1; |
| 2876 | info->io.regspacing = 1; |
| 2877 | info->io.regshift = 0; |
| 2878 | info->irq = 0; /* no interrupt */ |
| 2879 | info->irq_setup = NULL; |
| 2880 | info->dev = &dev->dev; |
| 2881 | |
| 2882 | dev_dbg(&dev->dev, "addr 0x%lx\n", info->io.addr_data); |
| 2883 | |
| 2884 | dev_set_drvdata(&dev->dev, info); |
| 2885 | |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2886 | rv = add_smi(info); |
| 2887 | if (rv) { |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2888 | kfree(info); |
Corey Minyard | d02b370 | 2014-01-24 14:00:53 -0600 | [diff] [blame] | 2889 | return rv; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2890 | } |
| 2891 | |
| 2892 | return 0; |
| 2893 | } |
| 2894 | |
| 2895 | static int ipmi_parisc_remove(struct parisc_device *dev) |
| 2896 | { |
| 2897 | cleanup_one_si(dev_get_drvdata(&dev->dev)); |
| 2898 | return 0; |
| 2899 | } |
| 2900 | |
LABBE Corentin | 99ee673 | 2015-11-13 13:31:51 +0100 | [diff] [blame] | 2901 | static const struct parisc_device_id ipmi_parisc_tbl[] = { |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 2902 | { HPHW_MC, HVERSION_REV_ANY_ID, 0x004, 0xC0 }, |
| 2903 | { 0, } |
| 2904 | }; |
| 2905 | |
| 2906 | static struct parisc_driver ipmi_parisc_driver = { |
| 2907 | .name = "ipmi", |
| 2908 | .id_table = ipmi_parisc_tbl, |
| 2909 | .probe = ipmi_parisc_probe, |
| 2910 | .remove = ipmi_parisc_remove, |
| 2911 | }; |
| 2912 | #endif /* CONFIG_PARISC */ |
| 2913 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2914 | static int wait_for_msg_done(struct smi_info *smi_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2915 | { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2916 | enum si_sm_result smi_result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | |
| 2918 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2919 | for (;;) { |
Corey Minyard | c3e7e79 | 2005-11-07 01:00:02 -0800 | [diff] [blame] | 2920 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
| 2921 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 2922 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2923 | smi_result = smi_info->handlers->event( |
Xie XiuQi | e21404d | 2014-01-24 14:00:52 -0600 | [diff] [blame] | 2924 | smi_info->si_sm, jiffies_to_usecs(1)); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2925 | } else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2926 | smi_result = smi_info->handlers->event( |
| 2927 | smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2928 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2929 | break; |
| 2930 | } |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2931 | if (smi_result == SI_SM_HOSED) |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2932 | /* |
| 2933 | * We couldn't get the state machine to run, so whatever's at |
| 2934 | * the port is probably not an IPMI SMI interface. |
| 2935 | */ |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2936 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 2938 | return 0; |
| 2939 | } |
| 2940 | |
| 2941 | static int try_get_dev_id(struct smi_info *smi_info) |
| 2942 | { |
| 2943 | unsigned char msg[2]; |
| 2944 | unsigned char *resp; |
| 2945 | unsigned long resp_len; |
| 2946 | int rv = 0; |
| 2947 | |
| 2948 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
| 2949 | if (!resp) |
| 2950 | return -ENOMEM; |
| 2951 | |
| 2952 | /* |
| 2953 | * Do a Get Device ID command, since it comes back with some |
| 2954 | * useful info. |
| 2955 | */ |
| 2956 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 2957 | msg[1] = IPMI_GET_DEVICE_ID_CMD; |
| 2958 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 2959 | |
| 2960 | rv = wait_for_msg_done(smi_info); |
| 2961 | if (rv) |
| 2962 | goto out; |
| 2963 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 2965 | resp, IPMI_MAX_MSG_LENGTH); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2966 | |
Corey Minyard | d8c9861 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 2967 | /* Check and record info from the get device id, in case we need it. */ |
| 2968 | rv = ipmi_demangle_device_id(resp, resp_len, &smi_info->device_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 2970 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | kfree(resp); |
| 2972 | return rv; |
| 2973 | } |
| 2974 | |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 2975 | static int get_global_enables(struct smi_info *smi_info, u8 *enables) |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 2976 | { |
| 2977 | unsigned char msg[3]; |
| 2978 | unsigned char *resp; |
| 2979 | unsigned long resp_len; |
| 2980 | int rv; |
| 2981 | |
| 2982 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 2983 | if (!resp) |
| 2984 | return -ENOMEM; |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 2985 | |
| 2986 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 2987 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 2988 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 2989 | |
| 2990 | rv = wait_for_msg_done(smi_info); |
| 2991 | if (rv) { |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 2992 | dev_warn(smi_info->dev, |
| 2993 | "Error getting response from get global enables command: %d\n", |
| 2994 | rv); |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 2995 | goto out; |
| 2996 | } |
| 2997 | |
| 2998 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 2999 | resp, IPMI_MAX_MSG_LENGTH); |
| 3000 | |
| 3001 | if (resp_len < 4 || |
| 3002 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 3003 | resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD || |
| 3004 | resp[2] != 0) { |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3005 | dev_warn(smi_info->dev, |
| 3006 | "Invalid return from get global enables command: %ld %x %x %x\n", |
| 3007 | resp_len, resp[0], resp[1], resp[2]); |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3008 | rv = -EINVAL; |
| 3009 | goto out; |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3010 | } else { |
| 3011 | *enables = resp[3]; |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3012 | } |
| 3013 | |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3014 | out: |
| 3015 | kfree(resp); |
| 3016 | return rv; |
| 3017 | } |
| 3018 | |
| 3019 | /* |
| 3020 | * Returns 1 if it gets an error from the command. |
| 3021 | */ |
| 3022 | static int set_global_enables(struct smi_info *smi_info, u8 enables) |
| 3023 | { |
| 3024 | unsigned char msg[3]; |
| 3025 | unsigned char *resp; |
| 3026 | unsigned long resp_len; |
| 3027 | int rv; |
| 3028 | |
| 3029 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
| 3030 | if (!resp) |
| 3031 | return -ENOMEM; |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3032 | |
| 3033 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 3034 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3035 | msg[2] = enables; |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3036 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 3037 | |
| 3038 | rv = wait_for_msg_done(smi_info); |
| 3039 | if (rv) { |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3040 | dev_warn(smi_info->dev, |
| 3041 | "Error getting response from set global enables command: %d\n", |
| 3042 | rv); |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3043 | goto out; |
| 3044 | } |
| 3045 | |
| 3046 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 3047 | resp, IPMI_MAX_MSG_LENGTH); |
| 3048 | |
| 3049 | if (resp_len < 3 || |
| 3050 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 3051 | resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) { |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3052 | dev_warn(smi_info->dev, |
| 3053 | "Invalid return from set global enables command: %ld %x %x\n", |
| 3054 | resp_len, resp[0], resp[1]); |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3055 | rv = -EINVAL; |
| 3056 | goto out; |
| 3057 | } |
| 3058 | |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3059 | if (resp[2] != 0) |
| 3060 | rv = 1; |
| 3061 | |
| 3062 | out: |
| 3063 | kfree(resp); |
| 3064 | return rv; |
| 3065 | } |
| 3066 | |
| 3067 | /* |
| 3068 | * Some BMCs do not support clearing the receive irq bit in the global |
| 3069 | * enables (even if they don't support interrupts on the BMC). Check |
| 3070 | * for this and handle it properly. |
| 3071 | */ |
| 3072 | static void check_clr_rcv_irq(struct smi_info *smi_info) |
| 3073 | { |
| 3074 | u8 enables = 0; |
| 3075 | int rv; |
| 3076 | |
| 3077 | rv = get_global_enables(smi_info, &enables); |
| 3078 | if (!rv) { |
| 3079 | if ((enables & IPMI_BMC_RCV_MSG_INTR) == 0) |
| 3080 | /* Already clear, should work ok. */ |
| 3081 | return; |
| 3082 | |
| 3083 | enables &= ~IPMI_BMC_RCV_MSG_INTR; |
| 3084 | rv = set_global_enables(smi_info, enables); |
| 3085 | } |
| 3086 | |
| 3087 | if (rv < 0) { |
| 3088 | dev_err(smi_info->dev, |
| 3089 | "Cannot check clearing the rcv irq: %d\n", rv); |
| 3090 | return; |
| 3091 | } |
| 3092 | |
| 3093 | if (rv) { |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3094 | /* |
| 3095 | * An error when setting the event buffer bit means |
| 3096 | * clearing the bit is not supported. |
| 3097 | */ |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3098 | dev_warn(smi_info->dev, |
| 3099 | "The BMC does not support clearing the recv irq bit, compensating, but the BMC needs to be fixed.\n"); |
| 3100 | smi_info->cannot_disable_irq = true; |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3101 | } |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3102 | } |
| 3103 | |
| 3104 | /* |
| 3105 | * Some BMCs do not support setting the interrupt bits in the global |
| 3106 | * enables even if they support interrupts. Clearly bad, but we can |
| 3107 | * compensate. |
| 3108 | */ |
| 3109 | static void check_set_rcv_irq(struct smi_info *smi_info) |
| 3110 | { |
| 3111 | u8 enables = 0; |
| 3112 | int rv; |
| 3113 | |
| 3114 | if (!smi_info->irq) |
| 3115 | return; |
| 3116 | |
| 3117 | rv = get_global_enables(smi_info, &enables); |
| 3118 | if (!rv) { |
| 3119 | enables |= IPMI_BMC_RCV_MSG_INTR; |
| 3120 | rv = set_global_enables(smi_info, enables); |
| 3121 | } |
| 3122 | |
| 3123 | if (rv < 0) { |
| 3124 | dev_err(smi_info->dev, |
| 3125 | "Cannot check setting the rcv irq: %d\n", rv); |
| 3126 | return; |
| 3127 | } |
| 3128 | |
| 3129 | if (rv) { |
| 3130 | /* |
| 3131 | * An error when setting the event buffer bit means |
| 3132 | * setting the bit is not supported. |
| 3133 | */ |
| 3134 | dev_warn(smi_info->dev, |
| 3135 | "The BMC does not support setting the recv irq bit, compensating, but the BMC needs to be fixed.\n"); |
| 3136 | smi_info->cannot_disable_irq = true; |
| 3137 | smi_info->irq_enable_broken = true; |
| 3138 | } |
Corey Minyard | 1e7d6a4 | 2015-04-03 12:13:48 -0500 | [diff] [blame] | 3139 | } |
| 3140 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3141 | static int try_enable_event_buffer(struct smi_info *smi_info) |
| 3142 | { |
| 3143 | unsigned char msg[3]; |
| 3144 | unsigned char *resp; |
| 3145 | unsigned long resp_len; |
| 3146 | int rv = 0; |
| 3147 | |
| 3148 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
| 3149 | if (!resp) |
| 3150 | return -ENOMEM; |
| 3151 | |
| 3152 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 3153 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 3154 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 3155 | |
| 3156 | rv = wait_for_msg_done(smi_info); |
| 3157 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3158 | printk(KERN_WARNING PFX "Error getting response from get" |
| 3159 | " global enables command, the event buffer is not" |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3160 | " enabled.\n"); |
| 3161 | goto out; |
| 3162 | } |
| 3163 | |
| 3164 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 3165 | resp, IPMI_MAX_MSG_LENGTH); |
| 3166 | |
| 3167 | if (resp_len < 4 || |
| 3168 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 3169 | resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD || |
| 3170 | resp[2] != 0) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3171 | printk(KERN_WARNING PFX "Invalid return from get global" |
| 3172 | " enables command, cannot enable the event buffer.\n"); |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3173 | rv = -EINVAL; |
| 3174 | goto out; |
| 3175 | } |
| 3176 | |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3177 | if (resp[3] & IPMI_BMC_EVT_MSG_BUFF) { |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3178 | /* buffer is already enabled, nothing to do. */ |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3179 | smi_info->supports_event_msg_buff = true; |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3180 | goto out; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3181 | } |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3182 | |
| 3183 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 3184 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
| 3185 | msg[2] = resp[3] | IPMI_BMC_EVT_MSG_BUFF; |
| 3186 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 3187 | |
| 3188 | rv = wait_for_msg_done(smi_info); |
| 3189 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3190 | printk(KERN_WARNING PFX "Error getting response from set" |
| 3191 | " global, enables command, the event buffer is not" |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3192 | " enabled.\n"); |
| 3193 | goto out; |
| 3194 | } |
| 3195 | |
| 3196 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 3197 | resp, IPMI_MAX_MSG_LENGTH); |
| 3198 | |
| 3199 | if (resp_len < 3 || |
| 3200 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || |
| 3201 | resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3202 | printk(KERN_WARNING PFX "Invalid return from get global," |
| 3203 | "enables command, not enable the event buffer.\n"); |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3204 | rv = -EINVAL; |
| 3205 | goto out; |
| 3206 | } |
| 3207 | |
| 3208 | if (resp[2] != 0) |
| 3209 | /* |
| 3210 | * An error when setting the event buffer bit means |
| 3211 | * that the event buffer is not supported. |
| 3212 | */ |
| 3213 | rv = -ENOENT; |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3214 | else |
| 3215 | smi_info->supports_event_msg_buff = true; |
| 3216 | |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 3217 | out: |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3218 | kfree(resp); |
| 3219 | return rv; |
| 3220 | } |
| 3221 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3222 | static int smi_type_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3223 | { |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3224 | struct smi_info *smi = m->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3225 | |
Joe Perches | d6c5dc1 | 2015-02-17 11:10:56 -0800 | [diff] [blame] | 3226 | seq_printf(m, "%s\n", si_to_str[smi->si_type]); |
| 3227 | |
Joe Perches | 5e33cd0 | 2015-02-22 10:21:07 -0800 | [diff] [blame] | 3228 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3229 | } |
| 3230 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3231 | static int smi_type_proc_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3232 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 3233 | return single_open(file, smi_type_proc_show, PDE_DATA(inode)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3235 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3236 | static const struct file_operations smi_type_proc_ops = { |
| 3237 | .open = smi_type_proc_open, |
| 3238 | .read = seq_read, |
| 3239 | .llseek = seq_lseek, |
| 3240 | .release = single_release, |
| 3241 | }; |
| 3242 | |
| 3243 | static int smi_si_stats_proc_show(struct seq_file *m, void *v) |
| 3244 | { |
| 3245 | struct smi_info *smi = m->private; |
| 3246 | |
| 3247 | seq_printf(m, "interrupts_enabled: %d\n", |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3248 | smi->irq && !smi->interrupt_disabled); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3249 | seq_printf(m, "short_timeouts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3250 | smi_get_stat(smi, short_timeouts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3251 | seq_printf(m, "long_timeouts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3252 | smi_get_stat(smi, long_timeouts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3253 | seq_printf(m, "idles: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3254 | smi_get_stat(smi, idles)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3255 | seq_printf(m, "interrupts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3256 | smi_get_stat(smi, interrupts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3257 | seq_printf(m, "attentions: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3258 | smi_get_stat(smi, attentions)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3259 | seq_printf(m, "flag_fetches: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3260 | smi_get_stat(smi, flag_fetches)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3261 | seq_printf(m, "hosed_count: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3262 | smi_get_stat(smi, hosed_count)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3263 | seq_printf(m, "complete_transactions: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3264 | smi_get_stat(smi, complete_transactions)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3265 | seq_printf(m, "events: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3266 | smi_get_stat(smi, events)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3267 | seq_printf(m, "watchdog_pretimeouts: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3268 | smi_get_stat(smi, watchdog_pretimeouts)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3269 | seq_printf(m, "incoming_messages: %u\n", |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3270 | smi_get_stat(smi, incoming_messages)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3271 | return 0; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3272 | } |
| 3273 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3274 | 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] | 3275 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 3276 | return single_open(file, smi_si_stats_proc_show, PDE_DATA(inode)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3277 | } |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3278 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3279 | static const struct file_operations smi_si_stats_proc_ops = { |
| 3280 | .open = smi_si_stats_proc_open, |
| 3281 | .read = seq_read, |
| 3282 | .llseek = seq_lseek, |
| 3283 | .release = single_release, |
| 3284 | }; |
| 3285 | |
| 3286 | static int smi_params_proc_show(struct seq_file *m, void *v) |
| 3287 | { |
| 3288 | struct smi_info *smi = m->private; |
| 3289 | |
Joe Perches | d6c5dc1 | 2015-02-17 11:10:56 -0800 | [diff] [blame] | 3290 | seq_printf(m, |
| 3291 | "%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n", |
| 3292 | si_to_str[smi->si_type], |
| 3293 | addr_space_to_str[smi->io.addr_type], |
| 3294 | smi->io.addr_data, |
| 3295 | smi->io.regspacing, |
| 3296 | smi->io.regsize, |
| 3297 | smi->io.regshift, |
| 3298 | smi->irq, |
| 3299 | smi->slave_addr); |
| 3300 | |
Joe Perches | 5e33cd0 | 2015-02-22 10:21:07 -0800 | [diff] [blame] | 3301 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3302 | } |
| 3303 | |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3304 | static int smi_params_proc_open(struct inode *inode, struct file *file) |
| 3305 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 3306 | return single_open(file, smi_params_proc_show, PDE_DATA(inode)); |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3307 | } |
| 3308 | |
| 3309 | static const struct file_operations smi_params_proc_ops = { |
| 3310 | .open = smi_params_proc_open, |
| 3311 | .read = seq_read, |
| 3312 | .llseek = seq_lseek, |
| 3313 | .release = single_release, |
| 3314 | }; |
| 3315 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3316 | /* |
| 3317 | * oem_data_avail_to_receive_msg_avail |
| 3318 | * @info - smi_info structure with msg_flags set |
| 3319 | * |
| 3320 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL |
| 3321 | * Returns 1 indicating need to re-run handle_flags(). |
| 3322 | */ |
| 3323 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) |
| 3324 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3325 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3326 | RECEIVE_MSG_AVAIL); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3327 | return 1; |
| 3328 | } |
| 3329 | |
| 3330 | /* |
| 3331 | * setup_dell_poweredge_oem_data_handler |
| 3332 | * @info - smi_info.device_id must be populated |
| 3333 | * |
| 3334 | * Systems that match, but have firmware version < 1.40 may assert |
| 3335 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that |
| 3336 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL |
| 3337 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags |
| 3338 | * as RECEIVE_MSG_AVAIL instead. |
| 3339 | * |
| 3340 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* |
| 3341 | * assert the OEM[012] bits, and if it did, the driver would have to |
| 3342 | * change to handle that properly, we don't actually check for the |
| 3343 | * firmware version. |
| 3344 | * Device ID = 0x20 BMC on PowerEdge 8G servers |
| 3345 | * Device Revision = 0x80 |
| 3346 | * Firmware Revision1 = 0x01 BMC version 1.40 |
| 3347 | * Firmware Revision2 = 0x40 BCD encoded |
| 3348 | * IPMI Version = 0x51 IPMI 1.5 |
| 3349 | * Manufacturer ID = A2 02 00 Dell IANA |
| 3350 | * |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3351 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
| 3352 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. |
| 3353 | * |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3354 | */ |
| 3355 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 |
| 3356 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 |
| 3357 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3358 | #define DELL_IANA_MFR_ID 0x0002a2 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3359 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
| 3360 | { |
| 3361 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3362 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3363 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
| 3364 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3365 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3366 | smi_info->oem_data_avail_handler = |
| 3367 | oem_data_avail_to_receive_msg_avail; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3368 | } else if (ipmi_version_major(id) < 1 || |
| 3369 | (ipmi_version_major(id) == 1 && |
| 3370 | ipmi_version_minor(id) < 5)) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 3371 | smi_info->oem_data_avail_handler = |
| 3372 | oem_data_avail_to_receive_msg_avail; |
| 3373 | } |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3374 | } |
| 3375 | } |
| 3376 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3377 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
| 3378 | static void return_hosed_msg_badsize(struct smi_info *smi_info) |
| 3379 | { |
| 3380 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 3381 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 3382 | /* Make it a response */ |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3383 | msg->rsp[0] = msg->data[0] | 4; |
| 3384 | msg->rsp[1] = msg->data[1]; |
| 3385 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; |
| 3386 | msg->rsp_size = 3; |
| 3387 | smi_info->curr_msg = NULL; |
| 3388 | deliver_recv_msg(smi_info, msg); |
| 3389 | } |
| 3390 | |
| 3391 | /* |
| 3392 | * dell_poweredge_bt_xaction_handler |
| 3393 | * @info - smi_info.device_id must be populated |
| 3394 | * |
| 3395 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will |
| 3396 | * not respond to a Get SDR command if the length of the data |
| 3397 | * requested is exactly 0x3A, which leads to command timeouts and no |
| 3398 | * data returned. This intercepts such commands, and causes userspace |
| 3399 | * callers to try again with a different-sized buffer, which succeeds. |
| 3400 | */ |
| 3401 | |
| 3402 | #define STORAGE_NETFN 0x0A |
| 3403 | #define STORAGE_CMD_GET_SDR 0x23 |
| 3404 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, |
| 3405 | unsigned long unused, |
| 3406 | void *in) |
| 3407 | { |
| 3408 | struct smi_info *smi_info = in; |
| 3409 | unsigned char *data = smi_info->curr_msg->data; |
| 3410 | unsigned int size = smi_info->curr_msg->data_size; |
| 3411 | if (size >= 8 && |
| 3412 | (data[0]>>2) == STORAGE_NETFN && |
| 3413 | data[1] == STORAGE_CMD_GET_SDR && |
| 3414 | data[7] == 0x3A) { |
| 3415 | return_hosed_msg_badsize(smi_info); |
| 3416 | return NOTIFY_STOP; |
| 3417 | } |
| 3418 | return NOTIFY_DONE; |
| 3419 | } |
| 3420 | |
| 3421 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { |
| 3422 | .notifier_call = dell_poweredge_bt_xaction_handler, |
| 3423 | }; |
| 3424 | |
| 3425 | /* |
| 3426 | * setup_dell_poweredge_bt_xaction_handler |
| 3427 | * @info - smi_info.device_id must be filled in already |
| 3428 | * |
| 3429 | * Fills in smi_info.device_id.start_transaction_pre_hook |
| 3430 | * when we know what function to use there. |
| 3431 | */ |
| 3432 | static void |
| 3433 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) |
| 3434 | { |
| 3435 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3436 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3437 | smi_info->si_type == SI_BT) |
| 3438 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); |
| 3439 | } |
| 3440 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3441 | /* |
| 3442 | * setup_oem_data_handler |
| 3443 | * @info - smi_info.device_id must be filled in already |
| 3444 | * |
| 3445 | * Fills in smi_info.device_id.oem_data_available_handler |
| 3446 | * when we know what function to use there. |
| 3447 | */ |
| 3448 | |
| 3449 | static void setup_oem_data_handler(struct smi_info *smi_info) |
| 3450 | { |
| 3451 | setup_dell_poweredge_oem_data_handler(smi_info); |
| 3452 | } |
| 3453 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3454 | static void setup_xaction_handlers(struct smi_info *smi_info) |
| 3455 | { |
| 3456 | setup_dell_poweredge_bt_xaction_handler(smi_info); |
| 3457 | } |
| 3458 | |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3459 | static void check_for_broken_irqs(struct smi_info *smi_info) |
| 3460 | { |
| 3461 | check_clr_rcv_irq(smi_info); |
| 3462 | check_set_rcv_irq(smi_info); |
| 3463 | } |
| 3464 | |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 3465 | static inline void stop_timer_and_thread(struct smi_info *smi_info) |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3466 | { |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3467 | if (smi_info->thread != NULL) |
| 3468 | kthread_stop(smi_info->thread); |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 3469 | |
| 3470 | smi_info->timer_can_start = false; |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3471 | if (smi_info->timer_running) |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3472 | del_timer_sync(&smi_info->si_timer); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3473 | } |
| 3474 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3475 | static int is_new_interface(struct smi_info *info) |
| 3476 | { |
| 3477 | struct smi_info *e; |
| 3478 | |
| 3479 | list_for_each_entry(e, &smi_infos, link) { |
| 3480 | if (e->io.addr_type != info->io.addr_type) |
| 3481 | continue; |
| 3482 | if (e->io.addr_data == info->io.addr_data) |
| 3483 | return 0; |
| 3484 | } |
| 3485 | |
| 3486 | return 1; |
| 3487 | } |
| 3488 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3489 | static int add_smi(struct smi_info *new_smi) |
| 3490 | { |
| 3491 | int rv = 0; |
| 3492 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3493 | printk(KERN_INFO PFX "Adding %s-specified %s state machine", |
Corey Minyard | 7e50387 | 2014-10-09 07:20:32 -0500 | [diff] [blame] | 3494 | ipmi_addr_src_to_str(new_smi->addr_source), |
| 3495 | si_to_str[new_smi->si_type]); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3496 | mutex_lock(&smi_infos_lock); |
| 3497 | if (!is_new_interface(new_smi)) { |
Yinghai Lu | 7bb671e | 2010-08-10 18:03:10 -0700 | [diff] [blame] | 3498 | printk(KERN_CONT " duplicate interface\n"); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3499 | rv = -EBUSY; |
| 3500 | goto out_err; |
| 3501 | } |
| 3502 | |
| 3503 | printk(KERN_CONT "\n"); |
| 3504 | |
| 3505 | /* So we know not to free it unless we have allocated one. */ |
| 3506 | new_smi->intf = NULL; |
| 3507 | new_smi->si_sm = NULL; |
| 3508 | new_smi->handlers = NULL; |
| 3509 | |
| 3510 | list_add_tail(&new_smi->link, &smi_infos); |
| 3511 | |
| 3512 | out_err: |
| 3513 | mutex_unlock(&smi_infos_lock); |
| 3514 | return rv; |
| 3515 | } |
| 3516 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3517 | static int try_smi_init(struct smi_info *new_smi) |
| 3518 | { |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3519 | int rv = 0; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3520 | int i; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3521 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3522 | printk(KERN_INFO PFX "Trying %s-specified %s state" |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 3523 | " machine at %s address 0x%lx, slave address 0x%x," |
| 3524 | " irq %d\n", |
Corey Minyard | 7e50387 | 2014-10-09 07:20:32 -0500 | [diff] [blame] | 3525 | ipmi_addr_src_to_str(new_smi->addr_source), |
Matthew Garrett | 5fedc4a | 2010-05-26 14:43:45 -0700 | [diff] [blame] | 3526 | si_to_str[new_smi->si_type], |
| 3527 | addr_space_to_str[new_smi->io.addr_type], |
| 3528 | new_smi->io.addr_data, |
| 3529 | new_smi->slave_addr, new_smi->irq); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3530 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3531 | switch (new_smi->si_type) { |
| 3532 | case SI_KCS: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3533 | new_smi->handlers = &kcs_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3534 | break; |
| 3535 | |
| 3536 | case SI_SMIC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3537 | new_smi->handlers = &smic_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3538 | break; |
| 3539 | |
| 3540 | case SI_BT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3541 | new_smi->handlers = &bt_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3542 | break; |
| 3543 | |
| 3544 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3545 | /* No support for anything else yet. */ |
| 3546 | rv = -EIO; |
| 3547 | goto out_err; |
| 3548 | } |
| 3549 | |
| 3550 | /* Allocate the state machine's data and initialize it. */ |
| 3551 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3552 | if (!new_smi->si_sm) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3553 | printk(KERN_ERR PFX |
| 3554 | "Could not allocate state machine memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3555 | rv = -ENOMEM; |
| 3556 | goto out_err; |
| 3557 | } |
| 3558 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, |
| 3559 | &new_smi->io); |
| 3560 | |
| 3561 | /* Now that we know the I/O size, we can set up the I/O. */ |
| 3562 | rv = new_smi->io_setup(new_smi); |
| 3563 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3564 | printk(KERN_ERR PFX "Could not set up I/O space\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3565 | goto out_err; |
| 3566 | } |
| 3567 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3568 | /* Do low-level detection first. */ |
| 3569 | if (new_smi->handlers->detect(new_smi->si_sm)) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3570 | if (new_smi->addr_source) |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3571 | printk(KERN_INFO PFX "Interface detection failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3572 | rv = -ENODEV; |
| 3573 | goto out_err; |
| 3574 | } |
| 3575 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3576 | /* |
| 3577 | * Attempt a get device id command. If it fails, we probably |
| 3578 | * don't have a BMC here. |
| 3579 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3580 | rv = try_get_dev_id(new_smi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3581 | if (rv) { |
| 3582 | if (new_smi->addr_source) |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3583 | printk(KERN_INFO PFX "There appears to be no BMC" |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3584 | " at this location\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3585 | goto out_err; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3586 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3587 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3588 | setup_oem_data_handler(new_smi); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 3589 | setup_xaction_handlers(new_smi); |
Corey Minyard | d088289 | 2015-08-18 14:29:10 -0500 | [diff] [blame] | 3590 | check_for_broken_irqs(new_smi); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 3591 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3592 | new_smi->waiting_msg = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3593 | new_smi->curr_msg = NULL; |
| 3594 | atomic_set(&new_smi->req_events, 0); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3595 | new_smi->run_to_completion = false; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 3596 | for (i = 0; i < SI_NUM_STATS; i++) |
| 3597 | atomic_set(&new_smi->stats[i], 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3598 | |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3599 | new_smi->interrupt_disabled = true; |
Corey Minyard | 8998649 | 2014-04-14 09:46:54 -0500 | [diff] [blame] | 3600 | atomic_set(&new_smi->need_watch, 0); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3601 | new_smi->intf_num = smi_num; |
| 3602 | smi_num++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3603 | |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3604 | rv = try_enable_event_buffer(new_smi); |
| 3605 | if (rv == 0) |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3606 | new_smi->has_event_buffer = true; |
Corey Minyard | 40112ae | 2009-04-21 12:24:03 -0700 | [diff] [blame] | 3607 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3608 | /* |
| 3609 | * Start clearing the flags before we enable interrupts or the |
| 3610 | * timer to avoid racing with the timer. |
| 3611 | */ |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 3612 | start_clear_flags(new_smi); |
Corey Minyard | d9b7e4f | 2014-11-19 04:03:26 -0600 | [diff] [blame] | 3613 | |
| 3614 | /* |
| 3615 | * IRQ is defined to be set when non-zero. req_events will |
| 3616 | * cause a global flags check that will enable interrupts. |
| 3617 | */ |
| 3618 | if (new_smi->irq) { |
| 3619 | new_smi->interrupt_disabled = false; |
| 3620 | atomic_set(&new_smi->req_events, 1); |
| 3621 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3622 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3623 | if (!new_smi->dev) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3624 | /* |
| 3625 | * If we don't already have a device from something |
| 3626 | * else (like PCI), then register a new one. |
| 3627 | */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3628 | new_smi->pdev = platform_device_alloc("ipmi_si", |
| 3629 | new_smi->intf_num); |
Corey Minyard | 8b32b5d | 2009-04-21 12:24:02 -0700 | [diff] [blame] | 3630 | if (!new_smi->pdev) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3631 | printk(KERN_ERR PFX |
| 3632 | "Unable to allocate platform device\n"); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3633 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3634 | } |
| 3635 | new_smi->dev = &new_smi->pdev->dev; |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 3636 | new_smi->dev->driver = &ipmi_driver.driver; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3637 | |
Zhang, Yanmin | b48f545 | 2006-11-16 01:19:08 -0800 | [diff] [blame] | 3638 | rv = platform_device_add(new_smi->pdev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3639 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3640 | printk(KERN_ERR PFX |
| 3641 | "Unable to register system interface device:" |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3642 | " %d\n", |
| 3643 | rv); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3644 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3645 | } |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3646 | new_smi->dev_registered = true; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3647 | } |
| 3648 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3649 | rv = ipmi_register_smi(&handlers, |
| 3650 | new_smi, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3651 | &new_smi->device_id, |
| 3652 | new_smi->dev, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 3653 | new_smi->slave_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3654 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3655 | dev_err(new_smi->dev, "Unable to register device: error %d\n", |
| 3656 | rv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3657 | goto out_err_stop_timer; |
| 3658 | } |
| 3659 | |
| 3660 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3661 | &smi_type_proc_ops, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3662 | new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3663 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3664 | 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] | 3665 | goto out_err_stop_timer; |
| 3666 | } |
| 3667 | |
| 3668 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3669 | &smi_si_stats_proc_ops, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3670 | new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3671 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3672 | 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] | 3673 | goto out_err_stop_timer; |
| 3674 | } |
| 3675 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3676 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", |
Alexey Dobriyan | 0741273 | 2011-05-26 16:25:55 -0700 | [diff] [blame] | 3677 | &smi_params_proc_ops, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3678 | new_smi); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3679 | if (rv) { |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3680 | 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] | 3681 | goto out_err_stop_timer; |
| 3682 | } |
| 3683 | |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3684 | dev_info(new_smi->dev, "IPMI %s interface initialized\n", |
| 3685 | si_to_str[new_smi->si_type]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3686 | |
| 3687 | return 0; |
| 3688 | |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 3689 | out_err_stop_timer: |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 3690 | stop_timer_and_thread(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3691 | |
Corey Minyard | 7682485 | 2016-04-26 22:40:15 -0500 | [diff] [blame] | 3692 | out_err: |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3693 | new_smi->interrupt_disabled = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3694 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3695 | if (new_smi->intf) { |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3696 | ipmi_smi_t intf = new_smi->intf; |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3697 | new_smi->intf = NULL; |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3698 | ipmi_unregister_smi(intf); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3699 | } |
| 3700 | |
| 3701 | if (new_smi->irq_cleanup) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3702 | new_smi->irq_cleanup(new_smi); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3703 | new_smi->irq_cleanup = NULL; |
| 3704 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3705 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3706 | /* |
| 3707 | * Wait until we know that we are out of any interrupt |
| 3708 | * handlers might have been running before we freed the |
| 3709 | * interrupt. |
| 3710 | */ |
Paul E. McKenney | fbd568a3e | 2005-05-01 08:59:04 -0700 | [diff] [blame] | 3711 | synchronize_sched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3712 | |
| 3713 | if (new_smi->si_sm) { |
| 3714 | if (new_smi->handlers) |
| 3715 | new_smi->handlers->cleanup(new_smi->si_sm); |
| 3716 | kfree(new_smi->si_sm); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3717 | new_smi->si_sm = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3718 | } |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3719 | if (new_smi->addr_source_cleanup) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3720 | new_smi->addr_source_cleanup(new_smi); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3721 | new_smi->addr_source_cleanup = NULL; |
| 3722 | } |
| 3723 | if (new_smi->io_cleanup) { |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 3724 | new_smi->io_cleanup(new_smi); |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3725 | new_smi->io_cleanup = NULL; |
| 3726 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3727 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3728 | if (new_smi->dev_registered) { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3729 | platform_device_unregister(new_smi->pdev); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3730 | new_smi->dev_registered = false; |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3731 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3732 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3733 | return rv; |
| 3734 | } |
| 3735 | |
Bill Pemberton | 2223cbe | 2012-11-19 13:22:51 -0500 | [diff] [blame] | 3736 | static int init_ipmi_si(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3737 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3738 | int i; |
| 3739 | char *str; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3740 | int rv; |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3741 | struct smi_info *e; |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3742 | enum ipmi_addr_src type = SI_INVALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3743 | |
| 3744 | if (initialized) |
| 3745 | return 0; |
| 3746 | initialized = 1; |
| 3747 | |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 3748 | if (si_tryplatform) { |
| 3749 | rv = platform_driver_register(&ipmi_driver); |
| 3750 | if (rv) { |
| 3751 | printk(KERN_ERR PFX "Unable to register " |
| 3752 | "driver: %d\n", rv); |
| 3753 | return rv; |
| 3754 | } |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3755 | } |
| 3756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3757 | /* Parse out the si_type string into its components. */ |
| 3758 | str = si_type_str; |
| 3759 | if (*str != '\0') { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3760 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3761 | si_type[i] = str; |
| 3762 | str = strchr(str, ','); |
| 3763 | if (str) { |
| 3764 | *str = '\0'; |
| 3765 | str++; |
| 3766 | } else { |
| 3767 | break; |
| 3768 | } |
| 3769 | } |
| 3770 | } |
| 3771 | |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3772 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3773 | |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3774 | /* 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] | 3775 | if (!hardcode_find_bmc()) |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3776 | return 0; |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3777 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3778 | #ifdef CONFIG_PCI |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 3779 | if (si_trypci) { |
| 3780 | rv = pci_register_driver(&ipmi_pci_driver); |
| 3781 | if (rv) |
| 3782 | printk(KERN_ERR PFX "Unable to register " |
| 3783 | "PCI driver: %d\n", rv); |
| 3784 | else |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3785 | pci_registered = true; |
Corey Minyard | f2afae4 | 2013-02-27 17:05:13 -0800 | [diff] [blame] | 3786 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3787 | #endif |
| 3788 | |
Matthew Garrett | 754d453 | 2010-05-26 14:43:47 -0700 | [diff] [blame] | 3789 | #ifdef CONFIG_DMI |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 3790 | if (si_trydmi) |
| 3791 | dmi_find_bmc(); |
Matthew Garrett | 754d453 | 2010-05-26 14:43:47 -0700 | [diff] [blame] | 3792 | #endif |
| 3793 | |
| 3794 | #ifdef CONFIG_ACPI |
Corey Minyard | d941aea | 2013-02-27 17:05:12 -0800 | [diff] [blame] | 3795 | if (si_tryacpi) |
| 3796 | spmi_find_bmc(); |
Matthew Garrett | 754d453 | 2010-05-26 14:43:47 -0700 | [diff] [blame] | 3797 | #endif |
| 3798 | |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 3799 | #ifdef CONFIG_PARISC |
| 3800 | register_parisc_driver(&ipmi_parisc_driver); |
Corey Minyard | 7aefac2 | 2014-04-14 09:46:56 -0500 | [diff] [blame] | 3801 | parisc_registered = true; |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 3802 | #endif |
| 3803 | |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3804 | /* We prefer devices with interrupts, but in the case of a machine |
| 3805 | with multiple BMCs we assume that there will be several instances |
| 3806 | of a given type so if we succeed in registering a type then also |
| 3807 | try to register everything else of the same type */ |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3808 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3809 | mutex_lock(&smi_infos_lock); |
| 3810 | list_for_each_entry(e, &smi_infos, link) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3811 | /* Try to register a device if it has an IRQ and we either |
| 3812 | haven't successfully registered a device yet or this |
| 3813 | device has the same type as one we successfully registered */ |
| 3814 | if (e->irq && (!type || e->addr_source == type)) { |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3815 | if (!try_smi_init(e)) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3816 | type = e->addr_source; |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3817 | } |
| 3818 | } |
| 3819 | } |
| 3820 | |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3821 | /* type will only have been set if we successfully registered an si */ |
| 3822 | if (type) { |
| 3823 | mutex_unlock(&smi_infos_lock); |
| 3824 | return 0; |
| 3825 | } |
| 3826 | |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3827 | /* Fall back to the preferred device */ |
| 3828 | |
| 3829 | list_for_each_entry(e, &smi_infos, link) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3830 | if (!e->irq && (!type || e->addr_source == type)) { |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3831 | if (!try_smi_init(e)) { |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3832 | type = e->addr_source; |
Matthew Garrett | d8cc526 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3833 | } |
| 3834 | } |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3835 | } |
| 3836 | mutex_unlock(&smi_infos_lock); |
| 3837 | |
Matthew Garrett | 06ee459 | 2010-05-26 14:43:49 -0700 | [diff] [blame] | 3838 | if (type) |
| 3839 | return 0; |
| 3840 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3841 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3842 | if (unload_when_empty && list_empty(&smi_infos)) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3843 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | d247852 | 2011-02-10 16:08:38 -0600 | [diff] [blame] | 3844 | cleanup_ipmi_si(); |
Myron Stowe | 279fbd0 | 2010-05-26 14:43:52 -0700 | [diff] [blame] | 3845 | printk(KERN_WARNING PFX |
| 3846 | "Unable to find any System Interface(s)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3847 | return -ENODEV; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3848 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3849 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3850 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3851 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3852 | } |
| 3853 | module_init(init_ipmi_si); |
| 3854 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3855 | static void cleanup_one_si(struct smi_info *to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3856 | { |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3857 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3858 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3859 | if (!to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3860 | return; |
| 3861 | |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3862 | if (to_clean->intf) { |
| 3863 | ipmi_smi_t intf = to_clean->intf; |
| 3864 | |
| 3865 | to_clean->intf = NULL; |
| 3866 | rv = ipmi_unregister_smi(intf); |
| 3867 | if (rv) { |
| 3868 | pr_err(PFX "Unable to unregister device: errno=%d\n", |
| 3869 | rv); |
| 3870 | } |
| 3871 | } |
| 3872 | |
Takao Indoh | 567eded | 2014-10-06 14:17:53 -0500 | [diff] [blame] | 3873 | if (to_clean->dev) |
| 3874 | dev_set_drvdata(to_clean->dev, NULL); |
| 3875 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3876 | list_del(&to_clean->link); |
| 3877 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3878 | /* |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3879 | * Make sure that interrupts, the timer and the thread are |
| 3880 | * stopped and will not run again. |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3881 | */ |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3882 | if (to_clean->irq_cleanup) |
| 3883 | to_clean->irq_cleanup(to_clean); |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 3884 | stop_timer_and_thread(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3885 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3886 | /* |
| 3887 | * Timeouts are stopped, now make sure the interrupts are off |
Corey Minyard | b874b98 | 2014-11-06 17:01:59 -0600 | [diff] [blame] | 3888 | * in the BMC. Note that timers and CPU interrupts are off, |
| 3889 | * so no need for locks. |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3890 | */ |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3891 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3892 | poll(to_clean); |
| 3893 | schedule_timeout_uninterruptible(1); |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3894 | } |
Masamitsu Yamazaki | f8dac5b | 2017-11-15 07:33:14 +0000 | [diff] [blame] | 3895 | disable_si_irq(to_clean); |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3896 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
| 3897 | poll(to_clean); |
| 3898 | schedule_timeout_uninterruptible(1); |
| 3899 | } |
| 3900 | |
Matthew Garrett | 2407d77 | 2010-05-26 14:43:46 -0700 | [diff] [blame] | 3901 | if (to_clean->handlers) |
| 3902 | to_clean->handlers->cleanup(to_clean->si_sm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3903 | |
| 3904 | kfree(to_clean->si_sm); |
| 3905 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3906 | if (to_clean->addr_source_cleanup) |
| 3907 | to_clean->addr_source_cleanup(to_clean); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 3908 | if (to_clean->io_cleanup) |
| 3909 | to_clean->io_cleanup(to_clean); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3910 | |
| 3911 | if (to_clean->dev_registered) |
| 3912 | platform_device_unregister(to_clean->pdev); |
| 3913 | |
| 3914 | kfree(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3915 | } |
| 3916 | |
Sergey Senozhatsky | 0dcf334 | 2011-03-23 16:42:54 -0700 | [diff] [blame] | 3917 | static void cleanup_ipmi_si(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3918 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3919 | struct smi_info *e, *tmp_e; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3920 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3921 | if (!initialized) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3922 | return; |
| 3923 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3924 | #ifdef CONFIG_PCI |
Matthew Garrett | 5648028 | 2010-06-29 15:05:29 -0700 | [diff] [blame] | 3925 | if (pci_registered) |
| 3926 | pci_unregister_driver(&ipmi_pci_driver); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3927 | #endif |
Thomas Bogendoerfer | fdbeb7d | 2013-09-05 06:36:36 -0500 | [diff] [blame] | 3928 | #ifdef CONFIG_PARISC |
| 3929 | if (parisc_registered) |
| 3930 | unregister_parisc_driver(&ipmi_parisc_driver); |
| 3931 | #endif |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3932 | |
Rob Herring | a1e9c9d | 2011-02-23 15:37:59 -0600 | [diff] [blame] | 3933 | platform_driver_unregister(&ipmi_driver); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 3934 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3935 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3936 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
| 3937 | cleanup_one_si(e); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3938 | mutex_unlock(&smi_infos_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3939 | } |
| 3940 | module_exit(cleanup_ipmi_si); |
| 3941 | |
| 3942 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3943 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3944 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT" |
| 3945 | " system interfaces."); |