Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1 | /* visorchipset_main.c |
| 2 | * |
Benjamin Romer | 6f14cc1 | 2015-07-16 12:40:48 -0400 | [diff] [blame] | 3 | * Copyright (C) 2010 - 2015 UNISYS CORPORATION |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 4 | * All rights reserved. |
| 5 | * |
Benjamin Romer | 6f14cc1 | 2015-07-16 12:40:48 -0400 | [diff] [blame] | 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms and conditions of the GNU General Public License, |
| 8 | * version 2, as published by the Free Software Foundation. |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 13 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 14 | * details. |
| 15 | */ |
| 16 | |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 17 | #include <linux/acpi.h> |
Erik Arfvidson | c0a1464 | 2015-05-05 18:37:06 -0400 | [diff] [blame] | 18 | #include <linux/cdev.h> |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 19 | #include <linux/ctype.h> |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 20 | #include <linux/fs.h> |
| 21 | #include <linux/mm.h> |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 22 | #include <linux/nls.h> |
| 23 | #include <linux/netdevice.h> |
| 24 | #include <linux/platform_device.h> |
Benjamin Romer | 90addb0 | 2014-05-06 09:58:23 -0400 | [diff] [blame] | 25 | #include <linux/uuid.h> |
Benjamin Romer | 1ba0098 | 2015-04-06 10:27:40 -0400 | [diff] [blame] | 26 | #include <linux/crash_dump.h> |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 27 | |
David Kershner | 5f3a7e3 | 2015-05-13 13:22:10 -0400 | [diff] [blame] | 28 | #include "channel_guid.h" |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 29 | #include "controlvmchannel.h" |
| 30 | #include "controlvmcompletionstatus.h" |
| 31 | #include "guestlinuxdebug.h" |
| 32 | #include "periodic_work.h" |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 33 | #include "version.h" |
| 34 | #include "visorbus.h" |
| 35 | #include "visorbus_private.h" |
David Kershner | 5f3a7e3 | 2015-05-13 13:22:10 -0400 | [diff] [blame] | 36 | #include "vmcallinterface.h" |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 37 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 38 | #define CURRENT_FILE_PC VISOR_CHIPSET_PC_visorchipset_main_c |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 39 | |
| 40 | #define MAX_NAME_SIZE 128 |
| 41 | #define MAX_IP_SIZE 50 |
| 42 | #define MAXOUTSTANDINGCHANNELCOMMAND 256 |
| 43 | #define POLLJIFFIES_CONTROLVMCHANNEL_FAST 1 |
| 44 | #define POLLJIFFIES_CONTROLVMCHANNEL_SLOW 100 |
| 45 | |
Bhaktipriya Shridhar | 2c7e1d4 | 2015-12-09 20:57:05 +0530 | [diff] [blame] | 46 | #define MAX_CONTROLVM_PAYLOAD_BYTES (1024 * 128) |
Prarit Bhargava | 2ee0dee | 2015-05-05 18:36:16 -0400 | [diff] [blame] | 47 | |
| 48 | #define VISORCHIPSET_MMAP_CONTROLCHANOFFSET 0x00000000 |
| 49 | |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 50 | #define UNISYS_SPAR_LEAF_ID 0x40000000 |
| 51 | |
| 52 | /* The s-Par leaf ID returns "UnisysSpar64" encoded across ebx, ecx, edx */ |
| 53 | #define UNISYS_SPAR_ID_EBX 0x73696e55 |
| 54 | #define UNISYS_SPAR_ID_ECX 0x70537379 |
| 55 | #define UNISYS_SPAR_ID_EDX 0x34367261 |
| 56 | |
Jes Sorensen | b615d62 | 2015-05-05 18:35:38 -0400 | [diff] [blame] | 57 | /* |
| 58 | * Module parameters |
| 59 | */ |
Jes Sorensen | b615d62 | 2015-05-05 18:35:38 -0400 | [diff] [blame] | 60 | static int visorchipset_major; |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 61 | static int visorchipset_visorbusregwait = 1; /* default is on */ |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 62 | static unsigned long controlvm_payload_bytes_buffered; |
Tim Sell | 12c957d | 2016-03-01 19:45:04 -0500 | [diff] [blame] | 63 | static u32 dump_vhba_bus; |
Jes Sorensen | b615d62 | 2015-05-05 18:35:38 -0400 | [diff] [blame] | 64 | |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 65 | static int |
| 66 | visorchipset_open(struct inode *inode, struct file *file) |
| 67 | { |
Tim Sell | e4feb2f | 2016-04-04 23:31:11 -0400 | [diff] [blame] | 68 | unsigned int minor_number = iminor(inode); |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 69 | |
| 70 | if (minor_number) |
| 71 | return -ENODEV; |
| 72 | file->private_data = NULL; |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | static int |
| 77 | visorchipset_release(struct inode *inode, struct file *file) |
| 78 | { |
| 79 | return 0; |
| 80 | } |
| 81 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 82 | /* When the controlvm channel is idle for at least MIN_IDLE_SECONDS, |
| 83 | * we switch to slow polling mode. As soon as we get a controlvm |
| 84 | * message, we switch back to fast polling mode. |
| 85 | */ |
| 86 | #define MIN_IDLE_SECONDS 10 |
Jes Sorensen | 52063ec | 2015-04-13 10:28:41 -0400 | [diff] [blame] | 87 | static unsigned long poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
Erik Arfvidson | 2ee0d05 | 2016-02-08 10:41:44 -0500 | [diff] [blame] | 88 | /* when we got our last controlvm message */ |
| 89 | static unsigned long most_recent_message_jiffies; |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 90 | static int visorbusregistered; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 91 | |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 92 | struct parser_context { |
| 93 | unsigned long allocbytes; |
| 94 | unsigned long param_bytes; |
| 95 | u8 *curr; |
| 96 | unsigned long bytes_remaining; |
| 97 | bool byte_stream; |
| 98 | char data[0]; |
| 99 | }; |
| 100 | |
Benjamin Romer | 9232d2d | 2015-03-16 13:57:57 -0400 | [diff] [blame] | 101 | static struct delayed_work periodic_controlvm_work; |
Benjamin Romer | 8f1947a | 2015-03-16 13:57:59 -0400 | [diff] [blame] | 102 | static DEFINE_SEMAPHORE(notifier_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 103 | |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 104 | static struct cdev file_cdev; |
| 105 | static struct visorchannel **file_controlvm_channel; |
Benjamin Romer | 4f44b72 | 2015-03-16 13:58:02 -0400 | [diff] [blame] | 106 | static struct controlvm_message_packet g_devicechangestate_packet; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 107 | |
Benjamin Romer | 1390b88 | 2015-03-16 13:58:03 -0400 | [diff] [blame] | 108 | static LIST_HEAD(bus_info_list); |
| 109 | static LIST_HEAD(dev_info_list); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 110 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 111 | static struct visorchannel *controlvm_channel; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 112 | |
Benjamin Romer | 84982fb | 2015-03-16 13:58:07 -0400 | [diff] [blame] | 113 | /* Manages the request payload in the controlvm channel */ |
Jes Sorensen | c1f834e | 2015-04-13 10:28:39 -0400 | [diff] [blame] | 114 | struct visor_controlvm_payload_info { |
Dan Williams | 3103dc0 | 2015-08-10 23:07:06 -0400 | [diff] [blame] | 115 | u8 *ptr; /* pointer to base address of payload pool */ |
Benjamin Romer | 5fc0229 | 2014-07-31 12:00:51 -0400 | [diff] [blame] | 116 | u64 offset; /* offset from beginning of controlvm |
Erik Arfvidson | 2ee0d05 | 2016-02-08 10:41:44 -0500 | [diff] [blame] | 117 | * channel to beginning of payload * pool |
| 118 | */ |
Benjamin Romer | b3c55b1 | 2014-07-31 12:00:50 -0400 | [diff] [blame] | 119 | u32 bytes; /* number of bytes in payload pool */ |
Jes Sorensen | c1f834e | 2015-04-13 10:28:39 -0400 | [diff] [blame] | 120 | }; |
| 121 | |
| 122 | static struct visor_controlvm_payload_info controlvm_payload_info; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 123 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 124 | /* The following globals are used to handle the scenario where we are unable to |
| 125 | * offload the payload from a controlvm message due to memory requirements. In |
| 126 | * this scenario, we simply stash the controlvm message, then attempt to |
| 127 | * process it again the next time controlvm_periodic_work() runs. |
| 128 | */ |
Benjamin Romer | 7166ed1 | 2015-03-16 13:58:38 -0400 | [diff] [blame] | 129 | static struct controlvm_message controlvm_pending_msg; |
Prarit Bhargava | c79b28f | 2015-05-05 18:36:15 -0400 | [diff] [blame] | 130 | static bool controlvm_pending_msg_valid; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 131 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 132 | /* This identifies a data buffer that has been received via a controlvm messages |
| 133 | * in a remote --> local CONTROLVM_TRANSMIT_FILE conversation. |
| 134 | */ |
| 135 | struct putfile_buffer_entry { |
| 136 | struct list_head next; /* putfile_buffer_entry list */ |
Benjamin Romer | 317d961 | 2015-03-16 13:57:51 -0400 | [diff] [blame] | 137 | struct parser_context *parser_ctx; /* points to input data buffer */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 138 | }; |
| 139 | |
| 140 | /* List of struct putfile_request *, via next_putfile_request member. |
| 141 | * Each entry in this list identifies an outstanding TRANSMIT_FILE |
| 142 | * conversation. |
| 143 | */ |
Benjamin Romer | 1eee001 | 2015-03-16 13:58:39 -0400 | [diff] [blame] | 144 | static LIST_HEAD(putfile_request_list); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 145 | |
| 146 | /* This describes a buffer and its current state of transfer (e.g., how many |
| 147 | * bytes have already been supplied as putfile data, and how many bytes are |
| 148 | * remaining) for a putfile_request. |
| 149 | */ |
| 150 | struct putfile_active_buffer { |
| 151 | /* a payload from a controlvm message, containing a file data buffer */ |
Benjamin Romer | 317d961 | 2015-03-16 13:57:51 -0400 | [diff] [blame] | 152 | struct parser_context *parser_ctx; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 153 | /* points within data area of parser_ctx to next byte of data */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 154 | size_t bytes_remaining; |
| 155 | }; |
| 156 | |
| 157 | #define PUTFILE_REQUEST_SIG 0x0906101302281211 |
| 158 | /* This identifies a single remote --> local CONTROLVM_TRANSMIT_FILE |
| 159 | * conversation. Structs of this type are dynamically linked into |
| 160 | * <Putfile_request_list>. |
| 161 | */ |
| 162 | struct putfile_request { |
| 163 | u64 sig; /* PUTFILE_REQUEST_SIG */ |
| 164 | |
| 165 | /* header from original TransmitFile request */ |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 166 | struct controlvm_message_header controlvm_header; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 167 | |
| 168 | /* link to next struct putfile_request */ |
| 169 | struct list_head next_putfile_request; |
| 170 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 171 | /* head of putfile_buffer_entry list, which describes the data to be |
| 172 | * supplied as putfile data; |
| 173 | * - this list is added to when controlvm messages come in that supply |
| 174 | * file data |
| 175 | * - this list is removed from via the hotplug program that is actually |
Erik Arfvidson | 2ee0d05 | 2016-02-08 10:41:44 -0500 | [diff] [blame] | 176 | * consuming these buffers to write as file data |
| 177 | */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 178 | struct list_head input_buffer_list; |
| 179 | spinlock_t req_list_lock; /* lock for input_buffer_list */ |
| 180 | |
| 181 | /* waiters for input_buffer_list to go non-empty */ |
| 182 | wait_queue_head_t input_buffer_wq; |
| 183 | |
| 184 | /* data not yet read within current putfile_buffer_entry */ |
| 185 | struct putfile_active_buffer active_buf; |
| 186 | |
| 187 | /* <0 = failed, 0 = in-progress, >0 = successful; */ |
| 188 | /* note that this must be set with req_list_lock, and if you set <0, */ |
| 189 | /* it is your responsibility to also free up all of the other objects */ |
| 190 | /* in this struct (like input_buffer_list, active_buf.parser_ctx) */ |
| 191 | /* before releasing the lock */ |
| 192 | int completion_status; |
| 193 | }; |
| 194 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 195 | struct parahotplug_request { |
| 196 | struct list_head list; |
| 197 | int id; |
| 198 | unsigned long expiration; |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 199 | struct controlvm_message msg; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 200 | }; |
| 201 | |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 202 | static LIST_HEAD(parahotplug_request_list); |
| 203 | static DEFINE_SPINLOCK(parahotplug_request_list_lock); /* lock for above */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 204 | static void parahotplug_process_list(void); |
| 205 | |
| 206 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / |
| 207 | * CONTROLVM_REPORTEVENT. |
| 208 | */ |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 209 | static struct visorchipset_busdev_notifiers busdev_notifiers; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 210 | |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 211 | static void bus_create_response(struct visor_device *p, int response); |
| 212 | static void bus_destroy_response(struct visor_device *p, int response); |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 213 | static void device_create_response(struct visor_device *p, int response); |
| 214 | static void device_destroy_response(struct visor_device *p, int response); |
| 215 | static void device_resume_response(struct visor_device *p, int response); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 216 | |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 217 | static void visorchipset_device_pause_response(struct visor_device *p, |
| 218 | int response); |
Prarit Bhargava | 2ee0dee | 2015-05-05 18:36:16 -0400 | [diff] [blame] | 219 | |
Benjamin Romer | 8e3fedd | 2015-03-16 13:58:43 -0400 | [diff] [blame] | 220 | static struct visorchipset_busdev_responders busdev_responders = { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 221 | .bus_create = bus_create_response, |
| 222 | .bus_destroy = bus_destroy_response, |
| 223 | .device_create = device_create_response, |
| 224 | .device_destroy = device_destroy_response, |
Ken Cox | 927c792 | 2014-03-05 14:52:25 -0600 | [diff] [blame] | 225 | .device_pause = visorchipset_device_pause_response, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 226 | .device_resume = device_resume_response, |
| 227 | }; |
| 228 | |
| 229 | /* info for /dev/visorchipset */ |
Benjamin Romer | 5aa8ae5 | 2015-03-16 13:58:44 -0400 | [diff] [blame] | 230 | static dev_t major_dev = -1; /**< indicates major num for device */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 231 | |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 232 | /* prototypes for attributes */ |
| 233 | static ssize_t toolaction_show(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 234 | struct device_attribute *attr, char *buf); |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 235 | static ssize_t toolaction_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 236 | struct device_attribute *attr, |
| 237 | const char *buf, size_t count); |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 238 | static DEVICE_ATTR_RW(toolaction); |
| 239 | |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 240 | static ssize_t boottotool_show(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 241 | struct device_attribute *attr, char *buf); |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 242 | static ssize_t boottotool_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 243 | struct device_attribute *attr, const char *buf, |
| 244 | size_t count); |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 245 | static DEVICE_ATTR_RW(boottotool); |
| 246 | |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 247 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 248 | char *buf); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 249 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 250 | const char *buf, size_t count); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 251 | static DEVICE_ATTR_RW(error); |
| 252 | |
| 253 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 254 | char *buf); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 255 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 256 | const char *buf, size_t count); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 257 | static DEVICE_ATTR_RW(textid); |
| 258 | |
| 259 | static ssize_t remaining_steps_show(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 260 | struct device_attribute *attr, char *buf); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 261 | static ssize_t remaining_steps_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 262 | struct device_attribute *attr, |
| 263 | const char *buf, size_t count); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 264 | static DEVICE_ATTR_RW(remaining_steps); |
| 265 | |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 266 | static ssize_t devicedisabled_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 267 | struct device_attribute *attr, |
| 268 | const char *buf, size_t count); |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 269 | static DEVICE_ATTR_WO(devicedisabled); |
| 270 | |
| 271 | static ssize_t deviceenabled_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 272 | struct device_attribute *attr, |
| 273 | const char *buf, size_t count); |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 274 | static DEVICE_ATTR_WO(deviceenabled); |
| 275 | |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 276 | static struct attribute *visorchipset_install_attrs[] = { |
| 277 | &dev_attr_toolaction.attr, |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 278 | &dev_attr_boottotool.attr, |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 279 | &dev_attr_error.attr, |
| 280 | &dev_attr_textid.attr, |
| 281 | &dev_attr_remaining_steps.attr, |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 282 | NULL |
| 283 | }; |
| 284 | |
| 285 | static struct attribute_group visorchipset_install_group = { |
| 286 | .name = "install", |
| 287 | .attrs = visorchipset_install_attrs |
| 288 | }; |
| 289 | |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 290 | static struct attribute *visorchipset_parahotplug_attrs[] = { |
| 291 | &dev_attr_devicedisabled.attr, |
| 292 | &dev_attr_deviceenabled.attr, |
| 293 | NULL |
| 294 | }; |
| 295 | |
| 296 | static struct attribute_group visorchipset_parahotplug_group = { |
| 297 | .name = "parahotplug", |
| 298 | .attrs = visorchipset_parahotplug_attrs |
| 299 | }; |
| 300 | |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 301 | static const struct attribute_group *visorchipset_dev_groups[] = { |
| 302 | &visorchipset_install_group, |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 303 | &visorchipset_parahotplug_group, |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 304 | NULL |
| 305 | }; |
| 306 | |
Don Zickus | 04dacac | 2015-06-04 09:22:48 -0400 | [diff] [blame] | 307 | static void visorchipset_dev_release(struct device *dev) |
| 308 | { |
| 309 | } |
| 310 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 311 | /* /sys/devices/platform/visorchipset */ |
Benjamin Romer | eb34e87 | 2015-03-16 13:58:45 -0400 | [diff] [blame] | 312 | static struct platform_device visorchipset_platform_device = { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 313 | .name = "visorchipset", |
| 314 | .id = -1, |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 315 | .dev.groups = visorchipset_dev_groups, |
Don Zickus | 04dacac | 2015-06-04 09:22:48 -0400 | [diff] [blame] | 316 | .dev.release = visorchipset_dev_release, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 317 | }; |
| 318 | |
| 319 | /* Function prototypes */ |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 320 | static void controlvm_respond(struct controlvm_message_header *msg_hdr, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 321 | int response); |
| 322 | static void controlvm_respond_chipset_init( |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 323 | struct controlvm_message_header *msg_hdr, int response, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 324 | enum ultra_chipset_feature features); |
| 325 | static void controlvm_respond_physdev_changestate( |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 326 | struct controlvm_message_header *msg_hdr, int response, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 327 | struct spar_segment_state state); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 328 | |
Prarit Bhargava | 2ee0dee | 2015-05-05 18:36:16 -0400 | [diff] [blame] | 329 | static void parser_done(struct parser_context *ctx); |
| 330 | |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 331 | static struct parser_context * |
Jes Sorensen | fbf3553 | 2015-05-05 18:37:14 -0400 | [diff] [blame] | 332 | parser_init_byte_stream(u64 addr, u32 bytes, bool local, bool *retry) |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 333 | { |
| 334 | int allocbytes = sizeof(struct parser_context) + bytes; |
David Kershner | d79f56b | 2016-03-11 17:01:40 -0500 | [diff] [blame] | 335 | struct parser_context *ctx; |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 336 | |
| 337 | if (retry) |
| 338 | *retry = false; |
Jes Sorensen | cc55b5c | 2015-05-05 18:37:13 -0400 | [diff] [blame] | 339 | |
| 340 | /* |
| 341 | * alloc an 0 extra byte to ensure payload is |
| 342 | * '\0'-terminated |
| 343 | */ |
| 344 | allocbytes++; |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 345 | if ((controlvm_payload_bytes_buffered + bytes) |
| 346 | > MAX_CONTROLVM_PAYLOAD_BYTES) { |
| 347 | if (retry) |
| 348 | *retry = true; |
David Kershner | d79f56b | 2016-03-11 17:01:40 -0500 | [diff] [blame] | 349 | return NULL; |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 350 | } |
Erik Arfvidson | 8c395e7 | 2016-02-08 10:41:45 -0500 | [diff] [blame] | 351 | ctx = kzalloc(allocbytes, GFP_KERNEL | __GFP_NORETRY); |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 352 | if (!ctx) { |
| 353 | if (retry) |
| 354 | *retry = true; |
David Kershner | d79f56b | 2016-03-11 17:01:40 -0500 | [diff] [blame] | 355 | return NULL; |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | ctx->allocbytes = allocbytes; |
| 359 | ctx->param_bytes = bytes; |
| 360 | ctx->curr = NULL; |
| 361 | ctx->bytes_remaining = 0; |
| 362 | ctx->byte_stream = false; |
| 363 | if (local) { |
| 364 | void *p; |
| 365 | |
David Kershner | d79f56b | 2016-03-11 17:01:40 -0500 | [diff] [blame] | 366 | if (addr > virt_to_phys(high_memory - 1)) |
| 367 | goto err_finish_ctx; |
Erik Arfvidson | 0e7bf2f | 2016-02-08 10:41:48 -0500 | [diff] [blame] | 368 | p = __va((unsigned long)(addr)); |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 369 | memcpy(ctx->data, p, bytes); |
| 370 | } else { |
Tim Sell | a8deaef | 2016-03-01 19:45:02 -0500 | [diff] [blame] | 371 | void *mapping = memremap(addr, bytes, MEMREMAP_WB); |
Jes Sorensen | 712c03d | 2015-05-05 18:36:25 -0400 | [diff] [blame] | 372 | |
David Kershner | d79f56b | 2016-03-11 17:01:40 -0500 | [diff] [blame] | 373 | if (!mapping) |
| 374 | goto err_finish_ctx; |
Dan Williams | 3103dc0 | 2015-08-10 23:07:06 -0400 | [diff] [blame] | 375 | memcpy(ctx->data, mapping, bytes); |
Dan Williams | 3103dc0 | 2015-08-10 23:07:06 -0400 | [diff] [blame] | 376 | memunmap(mapping); |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 377 | } |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 378 | |
Jes Sorensen | cc55b5c | 2015-05-05 18:37:13 -0400 | [diff] [blame] | 379 | ctx->byte_stream = true; |
David Kershner | d79f56b | 2016-03-11 17:01:40 -0500 | [diff] [blame] | 380 | controlvm_payload_bytes_buffered += ctx->param_bytes; |
| 381 | |
| 382 | return ctx; |
| 383 | |
| 384 | err_finish_ctx: |
| 385 | parser_done(ctx); |
| 386 | return NULL; |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 387 | } |
| 388 | |
Jes Sorensen | 464129e | 2015-05-05 18:37:12 -0400 | [diff] [blame] | 389 | static uuid_le |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 390 | parser_id_get(struct parser_context *ctx) |
| 391 | { |
| 392 | struct spar_controlvm_parameters_header *phdr = NULL; |
| 393 | |
Erik Arfvidson | e4a3dd3 | 2016-02-08 10:41:46 -0500 | [diff] [blame] | 394 | if (!ctx) |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 395 | return NULL_UUID_LE; |
| 396 | phdr = (struct spar_controlvm_parameters_header *)(ctx->data); |
| 397 | return phdr->id; |
| 398 | } |
| 399 | |
Prarit Bhargava | 2ee0dee | 2015-05-05 18:36:16 -0400 | [diff] [blame] | 400 | /** Describes the state from the perspective of which controlvm messages have |
| 401 | * been received for a bus or device. |
| 402 | */ |
| 403 | |
| 404 | enum PARSER_WHICH_STRING { |
| 405 | PARSERSTRING_INITIATOR, |
| 406 | PARSERSTRING_TARGET, |
| 407 | PARSERSTRING_CONNECTION, |
| 408 | PARSERSTRING_NAME, /* TODO: only PARSERSTRING_NAME is used ? */ |
| 409 | }; |
| 410 | |
Jes Sorensen | 464129e | 2015-05-05 18:37:12 -0400 | [diff] [blame] | 411 | static void |
Prarit Bhargava | 2ee0dee | 2015-05-05 18:36:16 -0400 | [diff] [blame] | 412 | parser_param_start(struct parser_context *ctx, |
| 413 | enum PARSER_WHICH_STRING which_string) |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 414 | { |
| 415 | struct spar_controlvm_parameters_header *phdr = NULL; |
| 416 | |
Erik Arfvidson | e4a3dd3 | 2016-02-08 10:41:46 -0500 | [diff] [blame] | 417 | if (!ctx) |
Benjamin Romer | b4d4dfb | 2016-02-08 10:41:53 -0500 | [diff] [blame] | 418 | return; |
| 419 | |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 420 | phdr = (struct spar_controlvm_parameters_header *)(ctx->data); |
| 421 | switch (which_string) { |
| 422 | case PARSERSTRING_INITIATOR: |
| 423 | ctx->curr = ctx->data + phdr->initiator_offset; |
| 424 | ctx->bytes_remaining = phdr->initiator_length; |
| 425 | break; |
| 426 | case PARSERSTRING_TARGET: |
| 427 | ctx->curr = ctx->data + phdr->target_offset; |
| 428 | ctx->bytes_remaining = phdr->target_length; |
| 429 | break; |
| 430 | case PARSERSTRING_CONNECTION: |
| 431 | ctx->curr = ctx->data + phdr->connection_offset; |
| 432 | ctx->bytes_remaining = phdr->connection_length; |
| 433 | break; |
| 434 | case PARSERSTRING_NAME: |
| 435 | ctx->curr = ctx->data + phdr->name_offset; |
| 436 | ctx->bytes_remaining = phdr->name_length; |
| 437 | break; |
| 438 | default: |
| 439 | break; |
| 440 | } |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 441 | } |
| 442 | |
Jes Sorensen | 464129e | 2015-05-05 18:37:12 -0400 | [diff] [blame] | 443 | static void parser_done(struct parser_context *ctx) |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 444 | { |
| 445 | if (!ctx) |
| 446 | return; |
| 447 | controlvm_payload_bytes_buffered -= ctx->param_bytes; |
| 448 | kfree(ctx); |
| 449 | } |
| 450 | |
Jes Sorensen | 464129e | 2015-05-05 18:37:12 -0400 | [diff] [blame] | 451 | static void * |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 452 | parser_string_get(struct parser_context *ctx) |
| 453 | { |
| 454 | u8 *pscan; |
| 455 | unsigned long nscan; |
| 456 | int value_length = -1; |
| 457 | void *value = NULL; |
| 458 | int i; |
| 459 | |
| 460 | if (!ctx) |
| 461 | return NULL; |
| 462 | pscan = ctx->curr; |
| 463 | nscan = ctx->bytes_remaining; |
| 464 | if (nscan == 0) |
| 465 | return NULL; |
| 466 | if (!pscan) |
| 467 | return NULL; |
| 468 | for (i = 0, value_length = -1; i < nscan; i++) |
| 469 | if (pscan[i] == '\0') { |
| 470 | value_length = i; |
| 471 | break; |
| 472 | } |
| 473 | if (value_length < 0) /* '\0' was not included in the length */ |
| 474 | value_length = nscan; |
Erik Arfvidson | 8c395e7 | 2016-02-08 10:41:45 -0500 | [diff] [blame] | 475 | value = kmalloc(value_length + 1, GFP_KERNEL | __GFP_NORETRY); |
Erik Arfvidson | e4a3dd3 | 2016-02-08 10:41:46 -0500 | [diff] [blame] | 476 | if (!value) |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 477 | return NULL; |
| 478 | if (value_length > 0) |
| 479 | memcpy(value, pscan, value_length); |
Erik Arfvidson | 0e7bf2f | 2016-02-08 10:41:48 -0500 | [diff] [blame] | 480 | ((u8 *)(value))[value_length] = '\0'; |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 481 | return value; |
| 482 | } |
| 483 | |
Vincent Bernat | d746cb5 | 2014-08-01 10:29:30 +0200 | [diff] [blame] | 484 | static ssize_t toolaction_show(struct device *dev, |
| 485 | struct device_attribute *attr, |
| 486 | char *buf) |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 487 | { |
David Binder | 3a56d70 | 2016-04-18 23:40:09 -0400 | [diff] [blame] | 488 | u8 tool_action = 0; |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 489 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 490 | visorchannel_read(controlvm_channel, |
Benjamin Romer | 6bb871b | 2015-12-07 10:58:37 -0500 | [diff] [blame] | 491 | offsetof(struct spar_controlvm_channel_protocol, |
| 492 | tool_action), &tool_action, sizeof(u8)); |
Benjamin Romer | 01f4d85 | 2015-03-16 13:58:48 -0400 | [diff] [blame] | 493 | return scnprintf(buf, PAGE_SIZE, "%u\n", tool_action); |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 494 | } |
| 495 | |
Vincent Bernat | d746cb5 | 2014-08-01 10:29:30 +0200 | [diff] [blame] | 496 | static ssize_t toolaction_store(struct device *dev, |
| 497 | struct device_attribute *attr, |
| 498 | const char *buf, size_t count) |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 499 | { |
Benjamin Romer | 01f4d85 | 2015-03-16 13:58:48 -0400 | [diff] [blame] | 500 | u8 tool_action; |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 501 | int ret; |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 502 | |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 503 | if (kstrtou8(buf, 10, &tool_action)) |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 504 | return -EINVAL; |
| 505 | |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 506 | ret = visorchannel_write |
| 507 | (controlvm_channel, |
| 508 | offsetof(struct spar_controlvm_channel_protocol, |
| 509 | tool_action), |
| 510 | &tool_action, sizeof(u8)); |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 511 | |
| 512 | if (ret) |
| 513 | return ret; |
Benjamin Romer | e22a4a0 | 2014-08-18 09:34:54 -0400 | [diff] [blame] | 514 | return count; |
Benjamin Romer | 19f6634 | 2014-07-22 09:56:25 -0400 | [diff] [blame] | 515 | } |
| 516 | |
Vincent Bernat | d746cb5 | 2014-08-01 10:29:30 +0200 | [diff] [blame] | 517 | static ssize_t boottotool_show(struct device *dev, |
| 518 | struct device_attribute *attr, |
| 519 | char *buf) |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 520 | { |
Benjamin Romer | 365522d | 2015-03-16 13:58:49 -0400 | [diff] [blame] | 521 | struct efi_spar_indication efi_spar_indication; |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 522 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 523 | visorchannel_read(controlvm_channel, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 524 | offsetof(struct spar_controlvm_channel_protocol, |
| 525 | efi_spar_ind), &efi_spar_indication, |
| 526 | sizeof(struct efi_spar_indication)); |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 527 | return scnprintf(buf, PAGE_SIZE, "%u\n", |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 528 | efi_spar_indication.boot_to_tool); |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 529 | } |
| 530 | |
Vincent Bernat | d746cb5 | 2014-08-01 10:29:30 +0200 | [diff] [blame] | 531 | static ssize_t boottotool_store(struct device *dev, |
| 532 | struct device_attribute *attr, |
| 533 | const char *buf, size_t count) |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 534 | { |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 535 | int val, ret; |
Benjamin Romer | 365522d | 2015-03-16 13:58:49 -0400 | [diff] [blame] | 536 | struct efi_spar_indication efi_spar_indication; |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 537 | |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 538 | if (kstrtoint(buf, 10, &val)) |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 539 | return -EINVAL; |
| 540 | |
Benjamin Romer | 365522d | 2015-03-16 13:58:49 -0400 | [diff] [blame] | 541 | efi_spar_indication.boot_to_tool = val; |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 542 | ret = visorchannel_write |
| 543 | (controlvm_channel, |
| 544 | offsetof(struct spar_controlvm_channel_protocol, |
| 545 | efi_spar_ind), &(efi_spar_indication), |
| 546 | sizeof(struct efi_spar_indication)); |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 547 | |
| 548 | if (ret) |
| 549 | return ret; |
Benjamin Romer | e22a4a0 | 2014-08-18 09:34:54 -0400 | [diff] [blame] | 550 | return count; |
Benjamin Romer | 54b3122 | 2014-07-22 09:56:26 -0400 | [diff] [blame] | 551 | } |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 552 | |
| 553 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 554 | char *buf) |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 555 | { |
David Binder | 3a56d70 | 2016-04-18 23:40:09 -0400 | [diff] [blame] | 556 | u32 error = 0; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 557 | |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 558 | visorchannel_read(controlvm_channel, |
| 559 | offsetof(struct spar_controlvm_channel_protocol, |
| 560 | installation_error), |
| 561 | &error, sizeof(u32)); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 562 | return scnprintf(buf, PAGE_SIZE, "%i\n", error); |
| 563 | } |
| 564 | |
| 565 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 566 | const char *buf, size_t count) |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 567 | { |
| 568 | u32 error; |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 569 | int ret; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 570 | |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 571 | if (kstrtou32(buf, 10, &error)) |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 572 | return -EINVAL; |
| 573 | |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 574 | ret = visorchannel_write |
| 575 | (controlvm_channel, |
| 576 | offsetof(struct spar_controlvm_channel_protocol, |
| 577 | installation_error), |
| 578 | &error, sizeof(u32)); |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 579 | if (ret) |
| 580 | return ret; |
Benjamin Romer | e22a4a0 | 2014-08-18 09:34:54 -0400 | [diff] [blame] | 581 | return count; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 585 | char *buf) |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 586 | { |
David Binder | 3a56d70 | 2016-04-18 23:40:09 -0400 | [diff] [blame] | 587 | u32 text_id = 0; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 588 | |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 589 | visorchannel_read |
| 590 | (controlvm_channel, |
| 591 | offsetof(struct spar_controlvm_channel_protocol, |
| 592 | installation_text_id), |
| 593 | &text_id, sizeof(u32)); |
Benjamin Romer | 10dbf0e | 2015-03-16 13:58:50 -0400 | [diff] [blame] | 594 | return scnprintf(buf, PAGE_SIZE, "%i\n", text_id); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 598 | const char *buf, size_t count) |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 599 | { |
Benjamin Romer | 10dbf0e | 2015-03-16 13:58:50 -0400 | [diff] [blame] | 600 | u32 text_id; |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 601 | int ret; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 602 | |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 603 | if (kstrtou32(buf, 10, &text_id)) |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 604 | return -EINVAL; |
| 605 | |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 606 | ret = visorchannel_write |
| 607 | (controlvm_channel, |
| 608 | offsetof(struct spar_controlvm_channel_protocol, |
| 609 | installation_text_id), |
| 610 | &text_id, sizeof(u32)); |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 611 | if (ret) |
| 612 | return ret; |
Benjamin Romer | e22a4a0 | 2014-08-18 09:34:54 -0400 | [diff] [blame] | 613 | return count; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 614 | } |
| 615 | |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 616 | static ssize_t remaining_steps_show(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 617 | struct device_attribute *attr, char *buf) |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 618 | { |
David Binder | 3a56d70 | 2016-04-18 23:40:09 -0400 | [diff] [blame] | 619 | u16 remaining_steps = 0; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 620 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 621 | visorchannel_read(controlvm_channel, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 622 | offsetof(struct spar_controlvm_channel_protocol, |
| 623 | installation_remaining_steps), |
| 624 | &remaining_steps, sizeof(u16)); |
Benjamin Romer | ee8da29 | 2015-03-16 13:58:51 -0400 | [diff] [blame] | 625 | return scnprintf(buf, PAGE_SIZE, "%hu\n", remaining_steps); |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 626 | } |
| 627 | |
| 628 | static ssize_t remaining_steps_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 629 | struct device_attribute *attr, |
| 630 | const char *buf, size_t count) |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 631 | { |
Benjamin Romer | ee8da29 | 2015-03-16 13:58:51 -0400 | [diff] [blame] | 632 | u16 remaining_steps; |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 633 | int ret; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 634 | |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 635 | if (kstrtou16(buf, 10, &remaining_steps)) |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 636 | return -EINVAL; |
| 637 | |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 638 | ret = visorchannel_write |
| 639 | (controlvm_channel, |
| 640 | offsetof(struct spar_controlvm_channel_protocol, |
| 641 | installation_remaining_steps), |
| 642 | &remaining_steps, sizeof(u16)); |
Benjamin Romer | 66e24b7 | 2014-07-25 13:55:10 -0400 | [diff] [blame] | 643 | if (ret) |
| 644 | return ret; |
Benjamin Romer | e22a4a0 | 2014-08-18 09:34:54 -0400 | [diff] [blame] | 645 | return count; |
Benjamin Romer | 422af17 | 2014-07-24 14:08:42 -0400 | [diff] [blame] | 646 | } |
| 647 | |
Don Zickus | ab0592b | 2015-05-13 13:22:19 -0400 | [diff] [blame] | 648 | struct visor_busdev { |
| 649 | u32 bus_no; |
| 650 | u32 dev_no; |
| 651 | }; |
| 652 | |
| 653 | static int match_visorbus_dev_by_id(struct device *dev, void *data) |
| 654 | { |
| 655 | struct visor_device *vdev = to_visor_device(dev); |
Shraddha Barke | 7f44582 | 2015-10-15 00:58:23 +0530 | [diff] [blame] | 656 | struct visor_busdev *id = data; |
Don Zickus | ab0592b | 2015-05-13 13:22:19 -0400 | [diff] [blame] | 657 | u32 bus_no = id->bus_no; |
| 658 | u32 dev_no = id->dev_no; |
| 659 | |
Don Zickus | 65bd6e4 | 2015-06-04 09:22:40 -0400 | [diff] [blame] | 660 | if ((vdev->chipset_bus_no == bus_no) && |
| 661 | (vdev->chipset_dev_no == dev_no)) |
Don Zickus | ab0592b | 2015-05-13 13:22:19 -0400 | [diff] [blame] | 662 | return 1; |
| 663 | |
| 664 | return 0; |
| 665 | } |
Erik Arfvidson | d1e0863 | 2016-02-08 10:41:47 -0500 | [diff] [blame] | 666 | |
Don Zickus | ab0592b | 2015-05-13 13:22:19 -0400 | [diff] [blame] | 667 | struct visor_device *visorbus_get_device_by_id(u32 bus_no, u32 dev_no, |
| 668 | struct visor_device *from) |
| 669 | { |
| 670 | struct device *dev; |
| 671 | struct device *dev_start = NULL; |
| 672 | struct visor_device *vdev = NULL; |
| 673 | struct visor_busdev id = { |
| 674 | .bus_no = bus_no, |
| 675 | .dev_no = dev_no |
| 676 | }; |
| 677 | |
| 678 | if (from) |
| 679 | dev_start = &from->device; |
| 680 | dev = bus_find_device(&visorbus_type, dev_start, (void *)&id, |
| 681 | match_visorbus_dev_by_id); |
| 682 | if (dev) |
| 683 | vdev = to_visor_device(dev); |
| 684 | return vdev; |
| 685 | } |
| 686 | EXPORT_SYMBOL(visorbus_get_device_by_id); |
| 687 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 688 | void |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 689 | visorchipset_register_busdev( |
Benjamin Romer | fe90d89 | 2014-10-31 09:57:32 -0400 | [diff] [blame] | 690 | struct visorchipset_busdev_notifiers *notifiers, |
Benjamin Romer | 929aa8a | 2014-10-31 09:57:33 -0400 | [diff] [blame] | 691 | struct visorchipset_busdev_responders *responders, |
Benjamin Romer | 1e7a59c | 2014-10-31 09:57:35 -0400 | [diff] [blame] | 692 | struct ultra_vbus_deviceinfo *driver_info) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 693 | { |
Benjamin Romer | 8f1947a | 2015-03-16 13:57:59 -0400 | [diff] [blame] | 694 | down(¬ifier_lock); |
Benjamin Romer | 38f736e | 2015-03-16 13:58:13 -0400 | [diff] [blame] | 695 | if (!notifiers) { |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 696 | memset(&busdev_notifiers, 0, |
| 697 | sizeof(busdev_notifiers)); |
| 698 | visorbusregistered = 0; /* clear flag */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 699 | } else { |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 700 | busdev_notifiers = *notifiers; |
| 701 | visorbusregistered = 1; /* set flag */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 702 | } |
| 703 | if (responders) |
Benjamin Romer | 8e3fedd | 2015-03-16 13:58:43 -0400 | [diff] [blame] | 704 | *responders = busdev_responders; |
Benjamin Romer | 1e7a59c | 2014-10-31 09:57:35 -0400 | [diff] [blame] | 705 | if (driver_info) |
| 706 | bus_device_info_init(driver_info, "chipset", "visorchipset", |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 707 | VERSION, NULL); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 708 | |
Benjamin Romer | 8f1947a | 2015-03-16 13:57:59 -0400 | [diff] [blame] | 709 | up(¬ifier_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 710 | } |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 711 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 712 | |
| 713 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 714 | chipset_init(struct controlvm_message *inmsg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 715 | { |
| 716 | static int chipset_inited; |
Benjamin Romer | b9b141e | 2014-10-23 14:30:24 -0400 | [diff] [blame] | 717 | enum ultra_chipset_feature features = 0; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 718 | int rc = CONTROLVM_RESP_SUCCESS; |
| 719 | |
| 720 | POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| 721 | if (chipset_inited) { |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 722 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
David Kershner | 5233d1e | 2016-03-11 17:01:41 -0500 | [diff] [blame] | 723 | goto out_respond; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 724 | } |
| 725 | chipset_inited = 1; |
| 726 | POSTCODE_LINUX_2(CHIPSET_INIT_EXIT_PC, POSTCODE_SEVERITY_INFO); |
| 727 | |
| 728 | /* Set features to indicate we support parahotplug (if Command |
Erik Arfvidson | 2ee0d05 | 2016-02-08 10:41:44 -0500 | [diff] [blame] | 729 | * also supports it). |
| 730 | */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 731 | features = |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 732 | inmsg->cmd.init_chipset. |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 733 | features & ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG; |
| 734 | |
| 735 | /* Set the "reply" bit so Command knows this is a |
Erik Arfvidson | 2ee0d05 | 2016-02-08 10:41:44 -0500 | [diff] [blame] | 736 | * features-aware driver. |
| 737 | */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 738 | features |= ULTRA_CHIPSET_FEATURE_REPLY; |
| 739 | |
David Kershner | 5233d1e | 2016-03-11 17:01:41 -0500 | [diff] [blame] | 740 | out_respond: |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 741 | if (inmsg->hdr.flags.response_expected) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 742 | controlvm_respond_chipset_init(&inmsg->hdr, rc, features); |
| 743 | } |
| 744 | |
| 745 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 746 | controlvm_init_response(struct controlvm_message *msg, |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 747 | struct controlvm_message_header *msg_hdr, int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 748 | { |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 749 | memset(msg, 0, sizeof(struct controlvm_message)); |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 750 | memcpy(&msg->hdr, msg_hdr, sizeof(struct controlvm_message_header)); |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 751 | msg->hdr.payload_bytes = 0; |
| 752 | msg->hdr.payload_vm_offset = 0; |
| 753 | msg->hdr.payload_max_bytes = 0; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 754 | if (response < 0) { |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 755 | msg->hdr.flags.failed = 1; |
Erik Arfvidson | 0e7bf2f | 2016-02-08 10:41:48 -0500 | [diff] [blame] | 756 | msg->hdr.completion_status = (u32)(-response); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 757 | } |
| 758 | } |
| 759 | |
| 760 | static void |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 761 | controlvm_respond(struct controlvm_message_header *msg_hdr, int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 762 | { |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 763 | struct controlvm_message outmsg; |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 764 | |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 765 | controlvm_init_response(&outmsg, msg_hdr, response); |
Benjamin Romer | 2098dbd | 2015-03-04 12:14:22 -0500 | [diff] [blame] | 766 | if (outmsg.hdr.flags.test_message == 1) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 767 | return; |
Benjamin Romer | 2098dbd | 2015-03-04 12:14:22 -0500 | [diff] [blame] | 768 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 769 | if (!visorchannel_signalinsert(controlvm_channel, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 770 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 771 | return; |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | static void |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 776 | controlvm_respond_chipset_init(struct controlvm_message_header *msg_hdr, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 777 | int response, |
Benjamin Romer | b9b141e | 2014-10-23 14:30:24 -0400 | [diff] [blame] | 778 | enum ultra_chipset_feature features) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 779 | { |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 780 | struct controlvm_message outmsg; |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 781 | |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 782 | controlvm_init_response(&outmsg, msg_hdr, response); |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 783 | outmsg.cmd.init_chipset.features = features; |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 784 | if (!visorchannel_signalinsert(controlvm_channel, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 785 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 786 | return; |
| 787 | } |
| 788 | } |
| 789 | |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 790 | static void controlvm_respond_physdev_changestate( |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 791 | struct controlvm_message_header *msg_hdr, int response, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 792 | struct spar_segment_state state) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 793 | { |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 794 | struct controlvm_message outmsg; |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 795 | |
Benjamin Romer | b3168c7 | 2015-03-16 13:58:46 -0400 | [diff] [blame] | 796 | controlvm_init_response(&outmsg, msg_hdr, response); |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 797 | outmsg.cmd.device_change_state.state = state; |
| 798 | outmsg.cmd.device_change_state.flags.phys_device = 1; |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 799 | if (!visorchannel_signalinsert(controlvm_channel, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 800 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 801 | return; |
| 802 | } |
| 803 | } |
| 804 | |
Prarit Bhargava | 2ee0dee | 2015-05-05 18:36:16 -0400 | [diff] [blame] | 805 | enum crash_obj_type { |
| 806 | CRASH_DEV, |
| 807 | CRASH_BUS, |
| 808 | }; |
| 809 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 810 | static void |
Tim Sell | 12c957d | 2016-03-01 19:45:04 -0500 | [diff] [blame] | 811 | save_crash_message(struct controlvm_message *msg, enum crash_obj_type typ) |
| 812 | { |
| 813 | u32 local_crash_msg_offset; |
| 814 | u16 local_crash_msg_count; |
| 815 | |
| 816 | if (visorchannel_read(controlvm_channel, |
| 817 | offsetof(struct spar_controlvm_channel_protocol, |
| 818 | saved_crash_message_count), |
| 819 | &local_crash_msg_count, sizeof(u16)) < 0) { |
| 820 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
| 821 | POSTCODE_SEVERITY_ERR); |
| 822 | return; |
| 823 | } |
| 824 | |
| 825 | if (local_crash_msg_count != CONTROLVM_CRASHMSG_MAX) { |
| 826 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
| 827 | local_crash_msg_count, |
| 828 | POSTCODE_SEVERITY_ERR); |
| 829 | return; |
| 830 | } |
| 831 | |
| 832 | if (visorchannel_read(controlvm_channel, |
| 833 | offsetof(struct spar_controlvm_channel_protocol, |
| 834 | saved_crash_message_offset), |
| 835 | &local_crash_msg_offset, sizeof(u32)) < 0) { |
| 836 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
| 837 | POSTCODE_SEVERITY_ERR); |
| 838 | return; |
| 839 | } |
| 840 | |
| 841 | if (typ == CRASH_BUS) { |
| 842 | if (visorchannel_write(controlvm_channel, |
| 843 | local_crash_msg_offset, |
| 844 | msg, |
| 845 | sizeof(struct controlvm_message)) < 0) { |
| 846 | POSTCODE_LINUX_2(SAVE_MSG_BUS_FAILURE_PC, |
| 847 | POSTCODE_SEVERITY_ERR); |
| 848 | return; |
| 849 | } |
| 850 | } else { |
| 851 | local_crash_msg_offset += sizeof(struct controlvm_message); |
| 852 | if (visorchannel_write(controlvm_channel, |
| 853 | local_crash_msg_offset, |
| 854 | msg, |
| 855 | sizeof(struct controlvm_message)) < 0) { |
| 856 | POSTCODE_LINUX_2(SAVE_MSG_DEV_FAILURE_PC, |
| 857 | POSTCODE_SEVERITY_ERR); |
| 858 | return; |
| 859 | } |
| 860 | } |
| 861 | } |
| 862 | |
| 863 | static void |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 864 | bus_responder(enum controlvm_id cmd_id, |
| 865 | struct controlvm_message_header *pending_msg_hdr, |
Don Zickus | 3032aed | 2015-05-13 13:22:24 -0400 | [diff] [blame] | 866 | int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 867 | { |
Erik Arfvidson | e4a3dd3 | 2016-02-08 10:41:46 -0500 | [diff] [blame] | 868 | if (!pending_msg_hdr) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 869 | return; /* no controlvm response needed */ |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 870 | |
| 871 | if (pending_msg_hdr->id != (u32)cmd_id) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 872 | return; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 873 | |
| 874 | controlvm_respond(pending_msg_hdr, response); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | static void |
Benjamin Romer | fbb31f4 | 2015-03-16 13:58:16 -0400 | [diff] [blame] | 878 | device_changestate_responder(enum controlvm_id cmd_id, |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 879 | struct visor_device *p, int response, |
Benjamin Romer | fbb31f4 | 2015-03-16 13:58:16 -0400 | [diff] [blame] | 880 | struct spar_segment_state response_state) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 881 | { |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 882 | struct controlvm_message outmsg; |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 883 | u32 bus_no = p->chipset_bus_no; |
| 884 | u32 dev_no = p->chipset_dev_no; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 885 | |
Erik Arfvidson | e4a3dd3 | 2016-02-08 10:41:46 -0500 | [diff] [blame] | 886 | if (!p->pending_msg_hdr) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 887 | return; /* no controlvm response needed */ |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 888 | if (p->pending_msg_hdr->id != cmd_id) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 889 | return; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 890 | |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 891 | controlvm_init_response(&outmsg, p->pending_msg_hdr, response); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 892 | |
Benjamin Romer | fbb31f4 | 2015-03-16 13:58:16 -0400 | [diff] [blame] | 893 | outmsg.cmd.device_change_state.bus_no = bus_no; |
| 894 | outmsg.cmd.device_change_state.dev_no = dev_no; |
| 895 | outmsg.cmd.device_change_state.state = response_state; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 896 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 897 | if (!visorchannel_signalinsert(controlvm_channel, |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 898 | CONTROLVM_QUEUE_REQUEST, &outmsg)) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 899 | return; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 900 | } |
| 901 | |
| 902 | static void |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 903 | device_responder(enum controlvm_id cmd_id, |
| 904 | struct controlvm_message_header *pending_msg_hdr, |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 905 | int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 906 | { |
Erik Arfvidson | e4a3dd3 | 2016-02-08 10:41:46 -0500 | [diff] [blame] | 907 | if (!pending_msg_hdr) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 908 | return; /* no controlvm response needed */ |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 909 | |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 910 | if (pending_msg_hdr->id != (u32)cmd_id) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 911 | return; |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 912 | |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 913 | controlvm_respond(pending_msg_hdr, response); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | static void |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 917 | bus_epilog(struct visor_device *bus_info, |
Benjamin Romer | 2836c6a | 2015-03-16 13:58:17 -0400 | [diff] [blame] | 918 | u32 cmd, struct controlvm_message_header *msg_hdr, |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 919 | int response, bool need_response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 920 | { |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 921 | struct controlvm_message_header *pmsg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 922 | |
David Kershner | 368acb3 | 2016-03-11 17:01:43 -0500 | [diff] [blame] | 923 | down(¬ifier_lock); |
| 924 | |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 925 | if (!bus_info) { |
| 926 | /* relying on a valid passed in response code */ |
| 927 | /* be lazy and re-use msg_hdr for this failure, is this ok?? */ |
| 928 | pmsg_hdr = msg_hdr; |
David Kershner | 368acb3 | 2016-03-11 17:01:43 -0500 | [diff] [blame] | 929 | goto out_respond_and_unlock; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 930 | } |
| 931 | |
| 932 | if (bus_info->pending_msg_hdr) { |
| 933 | /* only non-NULL if dev is still waiting on a response */ |
| 934 | response = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT; |
| 935 | pmsg_hdr = bus_info->pending_msg_hdr; |
David Kershner | 368acb3 | 2016-03-11 17:01:43 -0500 | [diff] [blame] | 936 | goto out_respond_and_unlock; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 937 | } |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 938 | |
Benjamin Romer | 2836c6a | 2015-03-16 13:58:17 -0400 | [diff] [blame] | 939 | if (need_response) { |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 940 | pmsg_hdr = kzalloc(sizeof(*pmsg_hdr), GFP_KERNEL); |
| 941 | if (!pmsg_hdr) { |
David Kershner | 368acb3 | 2016-03-11 17:01:43 -0500 | [diff] [blame] | 942 | POSTCODE_LINUX_4(MALLOC_FAILURE_PC, cmd, |
| 943 | bus_info->chipset_bus_no, |
| 944 | POSTCODE_SEVERITY_ERR); |
| 945 | goto out_unlock; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | memcpy(pmsg_hdr, msg_hdr, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 949 | sizeof(struct controlvm_message_header)); |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 950 | bus_info->pending_msg_hdr = pmsg_hdr; |
Benjamin Romer | 75c1f8b | 2015-03-16 13:58:19 -0400 | [diff] [blame] | 951 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 952 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 953 | if (response == CONTROLVM_RESP_SUCCESS) { |
| 954 | switch (cmd) { |
| 955 | case CONTROLVM_BUS_CREATE: |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 956 | if (busdev_notifiers.bus_create) { |
Don Zickus | 3032aed | 2015-05-13 13:22:24 -0400 | [diff] [blame] | 957 | (*busdev_notifiers.bus_create) (bus_info); |
David Kershner | 4a185e5 | 2016-04-04 23:31:39 -0400 | [diff] [blame] | 958 | goto out_unlock; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 959 | } |
| 960 | break; |
| 961 | case CONTROLVM_BUS_DESTROY: |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 962 | if (busdev_notifiers.bus_destroy) { |
Don Zickus | 3032aed | 2015-05-13 13:22:24 -0400 | [diff] [blame] | 963 | (*busdev_notifiers.bus_destroy) (bus_info); |
David Kershner | 4a185e5 | 2016-04-04 23:31:39 -0400 | [diff] [blame] | 964 | goto out_unlock; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 965 | } |
| 966 | break; |
| 967 | } |
| 968 | } |
David Kershner | 368acb3 | 2016-03-11 17:01:43 -0500 | [diff] [blame] | 969 | |
| 970 | out_respond_and_unlock: |
David Kershner | 4a185e5 | 2016-04-04 23:31:39 -0400 | [diff] [blame] | 971 | bus_responder(cmd, pmsg_hdr, response); |
David Kershner | 368acb3 | 2016-03-11 17:01:43 -0500 | [diff] [blame] | 972 | |
| 973 | out_unlock: |
Benjamin Romer | 8f1947a | 2015-03-16 13:57:59 -0400 | [diff] [blame] | 974 | up(¬ifier_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 975 | } |
| 976 | |
| 977 | static void |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 978 | device_epilog(struct visor_device *dev_info, |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 979 | struct spar_segment_state state, u32 cmd, |
Benjamin Romer | 2836c6a | 2015-03-16 13:58:17 -0400 | [diff] [blame] | 980 | struct controlvm_message_header *msg_hdr, int response, |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 981 | bool need_response, bool for_visorbus) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 982 | { |
Jes Sorensen | e82ba62 | 2015-05-05 18:35:45 -0400 | [diff] [blame] | 983 | struct visorchipset_busdev_notifiers *notifiers; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 984 | struct controlvm_message_header *pmsg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 985 | |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 986 | notifiers = &busdev_notifiers; |
| 987 | |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 988 | down(¬ifier_lock); |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 989 | if (!dev_info) { |
| 990 | /* relying on a valid passed in response code */ |
| 991 | /* be lazy and re-use msg_hdr for this failure, is this ok?? */ |
| 992 | pmsg_hdr = msg_hdr; |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 993 | goto out_respond_and_unlock; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 994 | } |
| 995 | |
| 996 | if (dev_info->pending_msg_hdr) { |
| 997 | /* only non-NULL if dev is still waiting on a response */ |
| 998 | response = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT; |
| 999 | pmsg_hdr = dev_info->pending_msg_hdr; |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 1000 | goto out_respond_and_unlock; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1001 | } |
| 1002 | |
Benjamin Romer | 2836c6a | 2015-03-16 13:58:17 -0400 | [diff] [blame] | 1003 | if (need_response) { |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1004 | pmsg_hdr = kzalloc(sizeof(*pmsg_hdr), GFP_KERNEL); |
| 1005 | if (!pmsg_hdr) { |
| 1006 | response = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 1007 | goto out_respond_and_unlock; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1008 | } |
| 1009 | |
| 1010 | memcpy(pmsg_hdr, msg_hdr, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1011 | sizeof(struct controlvm_message_header)); |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1012 | dev_info->pending_msg_hdr = pmsg_hdr; |
Benjamin Romer | 75c1f8b | 2015-03-16 13:58:19 -0400 | [diff] [blame] | 1013 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1014 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1015 | if (response >= 0) { |
| 1016 | switch (cmd) { |
| 1017 | case CONTROLVM_DEVICE_CREATE: |
| 1018 | if (notifiers->device_create) { |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 1019 | (*notifiers->device_create) (dev_info); |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 1020 | goto out_unlock; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1021 | } |
| 1022 | break; |
| 1023 | case CONTROLVM_DEVICE_CHANGESTATE: |
| 1024 | /* ServerReady / ServerRunning / SegmentStateRunning */ |
Benjamin Romer | bd0d2dc | 2014-10-23 14:30:13 -0400 | [diff] [blame] | 1025 | if (state.alive == segment_state_running.alive && |
| 1026 | state.operating == |
| 1027 | segment_state_running.operating) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1028 | if (notifiers->device_resume) { |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 1029 | (*notifiers->device_resume) (dev_info); |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 1030 | goto out_unlock; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1031 | } |
| 1032 | } |
| 1033 | /* ServerNotReady / ServerLost / SegmentStateStandby */ |
Benjamin Romer | bd0d2dc | 2014-10-23 14:30:13 -0400 | [diff] [blame] | 1034 | else if (state.alive == segment_state_standby.alive && |
Benjamin Romer | 3f833b5 | 2014-10-23 14:30:12 -0400 | [diff] [blame] | 1035 | state.operating == |
Benjamin Romer | bd0d2dc | 2014-10-23 14:30:13 -0400 | [diff] [blame] | 1036 | segment_state_standby.operating) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1037 | /* technically this is standby case |
| 1038 | * where server is lost |
| 1039 | */ |
| 1040 | if (notifiers->device_pause) { |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 1041 | (*notifiers->device_pause) (dev_info); |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 1042 | goto out_unlock; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1043 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1044 | } |
| 1045 | break; |
| 1046 | case CONTROLVM_DEVICE_DESTROY: |
| 1047 | if (notifiers->device_destroy) { |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 1048 | (*notifiers->device_destroy) (dev_info); |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 1049 | goto out_unlock; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1050 | } |
| 1051 | break; |
| 1052 | } |
| 1053 | } |
David Kershner | 3cb3fa3 | 2016-04-04 23:31:38 -0400 | [diff] [blame] | 1054 | |
| 1055 | out_respond_and_unlock: |
| 1056 | device_responder(cmd, pmsg_hdr, response); |
| 1057 | |
| 1058 | out_unlock: |
Benjamin Romer | 8f1947a | 2015-03-16 13:57:59 -0400 | [diff] [blame] | 1059 | up(¬ifier_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1060 | } |
| 1061 | |
| 1062 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1063 | bus_create(struct controlvm_message *inmsg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1064 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1065 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
Jes Sorensen | 52063ec | 2015-04-13 10:28:41 -0400 | [diff] [blame] | 1066 | u32 bus_no = cmd->create_bus.bus_no; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1067 | int rc = CONTROLVM_RESP_SUCCESS; |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1068 | struct visor_device *bus_info; |
Don Zickus | b32c499 | 2015-06-01 13:00:26 -0400 | [diff] [blame] | 1069 | struct visorchannel *visorchannel; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1070 | |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1071 | bus_info = visorbus_get_device_by_id(bus_no, BUS_ROOT_DEVICE, NULL); |
Benjamin Romer | 6c5fed3 | 2015-03-16 13:58:20 -0400 | [diff] [blame] | 1072 | if (bus_info && (bus_info->state.created == 1)) { |
| 1073 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1074 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1075 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
David Kershner | 9fd0406 | 2016-03-11 17:01:42 -0500 | [diff] [blame] | 1076 | goto out_bus_epilog; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1077 | } |
Benjamin Romer | 6c5fed3 | 2015-03-16 13:58:20 -0400 | [diff] [blame] | 1078 | bus_info = kzalloc(sizeof(*bus_info), GFP_KERNEL); |
| 1079 | if (!bus_info) { |
| 1080 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1081 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1082 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
David Kershner | 9fd0406 | 2016-03-11 17:01:42 -0500 | [diff] [blame] | 1083 | goto out_bus_epilog; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1084 | } |
| 1085 | |
David Kershner | 4abce83 | 2015-06-04 09:22:49 -0400 | [diff] [blame] | 1086 | INIT_LIST_HEAD(&bus_info->list_all); |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1087 | bus_info->chipset_bus_no = bus_no; |
| 1088 | bus_info->chipset_dev_no = BUS_ROOT_DEVICE; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1089 | |
Benjamin Romer | 6c5fed3 | 2015-03-16 13:58:20 -0400 | [diff] [blame] | 1090 | POSTCODE_LINUX_3(BUS_CREATE_ENTRY_PC, bus_no, POSTCODE_SEVERITY_INFO); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1091 | |
Don Zickus | b32c499 | 2015-06-01 13:00:26 -0400 | [diff] [blame] | 1092 | visorchannel = visorchannel_create(cmd->create_bus.channel_addr, |
| 1093 | cmd->create_bus.channel_bytes, |
| 1094 | GFP_KERNEL, |
| 1095 | cmd->create_bus.bus_data_type_uuid); |
| 1096 | |
| 1097 | if (!visorchannel) { |
| 1098 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus_no, |
| 1099 | POSTCODE_SEVERITY_ERR); |
| 1100 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
| 1101 | kfree(bus_info); |
| 1102 | bus_info = NULL; |
David Kershner | 9fd0406 | 2016-03-11 17:01:42 -0500 | [diff] [blame] | 1103 | goto out_bus_epilog; |
Don Zickus | b32c499 | 2015-06-01 13:00:26 -0400 | [diff] [blame] | 1104 | } |
| 1105 | bus_info->visorchannel = visorchannel; |
Tim Sell | 12c957d | 2016-03-01 19:45:04 -0500 | [diff] [blame] | 1106 | if (uuid_le_cmp(cmd->create_bus.bus_inst_uuid, spar_siovm_uuid) == 0) { |
| 1107 | dump_vhba_bus = bus_no; |
| 1108 | save_crash_message(inmsg, CRASH_BUS); |
| 1109 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1110 | |
Benjamin Romer | 6c5fed3 | 2015-03-16 13:58:20 -0400 | [diff] [blame] | 1111 | POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC, bus_no, POSTCODE_SEVERITY_INFO); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1112 | |
David Kershner | 9fd0406 | 2016-03-11 17:01:42 -0500 | [diff] [blame] | 1113 | out_bus_epilog: |
Don Zickus | 3032aed | 2015-05-13 13:22:24 -0400 | [diff] [blame] | 1114 | bus_epilog(bus_info, CONTROLVM_BUS_CREATE, &inmsg->hdr, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1115 | rc, inmsg->hdr.flags.response_expected == 1); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1116 | } |
| 1117 | |
| 1118 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1119 | bus_destroy(struct controlvm_message *inmsg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1120 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1121 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
Jes Sorensen | 52063ec | 2015-04-13 10:28:41 -0400 | [diff] [blame] | 1122 | u32 bus_no = cmd->destroy_bus.bus_no; |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1123 | struct visor_device *bus_info; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1124 | int rc = CONTROLVM_RESP_SUCCESS; |
| 1125 | |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1126 | bus_info = visorbus_get_device_by_id(bus_no, BUS_ROOT_DEVICE, NULL); |
Benjamin Romer | dff54cd | 2015-03-16 13:58:21 -0400 | [diff] [blame] | 1127 | if (!bus_info) |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1128 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
Benjamin Romer | dff54cd | 2015-03-16 13:58:21 -0400 | [diff] [blame] | 1129 | else if (bus_info->state.created == 0) |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1130 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1131 | |
Don Zickus | 3032aed | 2015-05-13 13:22:24 -0400 | [diff] [blame] | 1132 | bus_epilog(bus_info, CONTROLVM_BUS_DESTROY, &inmsg->hdr, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1133 | rc, inmsg->hdr.flags.response_expected == 1); |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1134 | |
| 1135 | /* bus_info is freed as part of the busdevice_release function */ |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1136 | } |
| 1137 | |
| 1138 | static void |
Benjamin Romer | 317d961 | 2015-03-16 13:57:51 -0400 | [diff] [blame] | 1139 | bus_configure(struct controlvm_message *inmsg, |
| 1140 | struct parser_context *parser_ctx) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1141 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1142 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
Jes Sorensen | e82ba62 | 2015-05-05 18:35:45 -0400 | [diff] [blame] | 1143 | u32 bus_no; |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1144 | struct visor_device *bus_info; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1145 | int rc = CONTROLVM_RESP_SUCCESS; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1146 | |
Benjamin Romer | 654bada | 2015-03-16 13:58:22 -0400 | [diff] [blame] | 1147 | bus_no = cmd->configure_bus.bus_no; |
| 1148 | POSTCODE_LINUX_3(BUS_CONFIGURE_ENTRY_PC, bus_no, |
| 1149 | POSTCODE_SEVERITY_INFO); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1150 | |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1151 | bus_info = visorbus_get_device_by_id(bus_no, BUS_ROOT_DEVICE, NULL); |
Benjamin Romer | 654bada | 2015-03-16 13:58:22 -0400 | [diff] [blame] | 1152 | if (!bus_info) { |
| 1153 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1154 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1155 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
Benjamin Romer | 654bada | 2015-03-16 13:58:22 -0400 | [diff] [blame] | 1156 | } else if (bus_info->state.created == 0) { |
| 1157 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1158 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1159 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
Erik Arfvidson | e4a3dd3 | 2016-02-08 10:41:46 -0500 | [diff] [blame] | 1160 | } else if (bus_info->pending_msg_hdr) { |
Benjamin Romer | 654bada | 2015-03-16 13:58:22 -0400 | [diff] [blame] | 1161 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1162 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1163 | rc = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT; |
Benjamin Romer | 654bada | 2015-03-16 13:58:22 -0400 | [diff] [blame] | 1164 | } else { |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 1165 | visorchannel_set_clientpartition |
| 1166 | (bus_info->visorchannel, |
| 1167 | cmd->configure_bus.guest_handle); |
Benjamin Romer | 654bada | 2015-03-16 13:58:22 -0400 | [diff] [blame] | 1168 | bus_info->partition_uuid = parser_id_get(parser_ctx); |
| 1169 | parser_param_start(parser_ctx, PARSERSTRING_NAME); |
| 1170 | bus_info->name = parser_string_get(parser_ctx); |
| 1171 | |
Benjamin Romer | 654bada | 2015-03-16 13:58:22 -0400 | [diff] [blame] | 1172 | POSTCODE_LINUX_3(BUS_CONFIGURE_EXIT_PC, bus_no, |
| 1173 | POSTCODE_SEVERITY_INFO); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1174 | } |
Don Zickus | 3032aed | 2015-05-13 13:22:24 -0400 | [diff] [blame] | 1175 | bus_epilog(bus_info, CONTROLVM_BUS_CONFIGURE, &inmsg->hdr, |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1176 | rc, inmsg->hdr.flags.response_expected == 1); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1180 | my_device_create(struct controlvm_message *inmsg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1181 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1182 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
Jes Sorensen | 52063ec | 2015-04-13 10:28:41 -0400 | [diff] [blame] | 1183 | u32 bus_no = cmd->create_device.bus_no; |
| 1184 | u32 dev_no = cmd->create_device.dev_no; |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1185 | struct visor_device *dev_info = NULL; |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1186 | struct visor_device *bus_info; |
Don Zickus | b32c499 | 2015-06-01 13:00:26 -0400 | [diff] [blame] | 1187 | struct visorchannel *visorchannel; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1188 | int rc = CONTROLVM_RESP_SUCCESS; |
| 1189 | |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1190 | bus_info = visorbus_get_device_by_id(bus_no, BUS_ROOT_DEVICE, NULL); |
Benjamin Romer | c60c8e2 | 2015-03-16 13:58:23 -0400 | [diff] [blame] | 1191 | if (!bus_info) { |
| 1192 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1193 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1194 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
David Kershner | c6af7a9 | 2016-03-11 17:01:44 -0500 | [diff] [blame] | 1195 | goto out_respond; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1196 | } |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1197 | |
Benjamin Romer | c60c8e2 | 2015-03-16 13:58:23 -0400 | [diff] [blame] | 1198 | if (bus_info->state.created == 0) { |
| 1199 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1200 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1201 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
David Kershner | c6af7a9 | 2016-03-11 17:01:44 -0500 | [diff] [blame] | 1202 | goto out_respond; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1203 | } |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1204 | |
| 1205 | dev_info = visorbus_get_device_by_id(bus_no, dev_no, NULL); |
| 1206 | if (dev_info && (dev_info->state.created == 1)) { |
| 1207 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, |
| 1208 | POSTCODE_SEVERITY_ERR); |
| 1209 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
David Kershner | c6af7a9 | 2016-03-11 17:01:44 -0500 | [diff] [blame] | 1210 | goto out_respond; |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1211 | } |
| 1212 | |
Benjamin Romer | c60c8e2 | 2015-03-16 13:58:23 -0400 | [diff] [blame] | 1213 | dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL); |
| 1214 | if (!dev_info) { |
| 1215 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1216 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1217 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
David Kershner | c6af7a9 | 2016-03-11 17:01:44 -0500 | [diff] [blame] | 1218 | goto out_respond; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1219 | } |
Andreea-Cristina Bernat | 97a84f1 | 2014-03-14 04:20:06 +0200 | [diff] [blame] | 1220 | |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1221 | dev_info->chipset_bus_no = bus_no; |
| 1222 | dev_info->chipset_dev_no = dev_no; |
| 1223 | dev_info->inst = cmd->create_device.dev_inst_uuid; |
| 1224 | |
| 1225 | /* not sure where the best place to set the 'parent' */ |
| 1226 | dev_info->device.parent = &bus_info->device; |
| 1227 | |
Benjamin Romer | c60c8e2 | 2015-03-16 13:58:23 -0400 | [diff] [blame] | 1228 | POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, dev_no, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1229 | POSTCODE_SEVERITY_INFO); |
| 1230 | |
David Kershner | a3ef1a8 | 2015-07-14 14:43:29 -0400 | [diff] [blame] | 1231 | visorchannel = |
| 1232 | visorchannel_create_with_lock(cmd->create_device.channel_addr, |
| 1233 | cmd->create_device.channel_bytes, |
| 1234 | GFP_KERNEL, |
| 1235 | cmd->create_device.data_type_uuid); |
Don Zickus | b32c499 | 2015-06-01 13:00:26 -0400 | [diff] [blame] | 1236 | |
| 1237 | if (!visorchannel) { |
| 1238 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, |
| 1239 | POSTCODE_SEVERITY_ERR); |
| 1240 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
| 1241 | kfree(dev_info); |
| 1242 | dev_info = NULL; |
David Kershner | c6af7a9 | 2016-03-11 17:01:44 -0500 | [diff] [blame] | 1243 | goto out_respond; |
Don Zickus | b32c499 | 2015-06-01 13:00:26 -0400 | [diff] [blame] | 1244 | } |
| 1245 | dev_info->visorchannel = visorchannel; |
| 1246 | dev_info->channel_type_guid = cmd->create_device.data_type_uuid; |
Tim Sell | 12c957d | 2016-03-01 19:45:04 -0500 | [diff] [blame] | 1247 | if (uuid_le_cmp(cmd->create_device.data_type_uuid, |
| 1248 | spar_vhba_channel_protocol_uuid) == 0) |
| 1249 | save_crash_message(inmsg, CRASH_DEV); |
| 1250 | |
Benjamin Romer | c60c8e2 | 2015-03-16 13:58:23 -0400 | [diff] [blame] | 1251 | POSTCODE_LINUX_4(DEVICE_CREATE_EXIT_PC, dev_no, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1252 | POSTCODE_SEVERITY_INFO); |
David Kershner | c6af7a9 | 2016-03-11 17:01:44 -0500 | [diff] [blame] | 1253 | out_respond: |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 1254 | device_epilog(dev_info, segment_state_running, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1255 | CONTROLVM_DEVICE_CREATE, &inmsg->hdr, rc, |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 1256 | inmsg->hdr.flags.response_expected == 1, 1); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1257 | } |
| 1258 | |
| 1259 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1260 | my_device_changestate(struct controlvm_message *inmsg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1261 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1262 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
Jes Sorensen | 52063ec | 2015-04-13 10:28:41 -0400 | [diff] [blame] | 1263 | u32 bus_no = cmd->device_change_state.bus_no; |
| 1264 | u32 dev_no = cmd->device_change_state.dev_no; |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1265 | struct spar_segment_state state = cmd->device_change_state.state; |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1266 | struct visor_device *dev_info; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1267 | int rc = CONTROLVM_RESP_SUCCESS; |
| 1268 | |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1269 | dev_info = visorbus_get_device_by_id(bus_no, dev_no, NULL); |
Benjamin Romer | 0278a90 | 2015-03-16 13:58:24 -0400 | [diff] [blame] | 1270 | if (!dev_info) { |
| 1271 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, dev_no, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1272 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1273 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
Benjamin Romer | 0278a90 | 2015-03-16 13:58:24 -0400 | [diff] [blame] | 1274 | } else if (dev_info->state.created == 0) { |
| 1275 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, dev_no, bus_no, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1276 | POSTCODE_SEVERITY_ERR); |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1277 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1278 | } |
Benjamin Romer | 0278a90 | 2015-03-16 13:58:24 -0400 | [diff] [blame] | 1279 | if ((rc >= CONTROLVM_RESP_SUCCESS) && dev_info) |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 1280 | device_epilog(dev_info, state, |
Benjamin Romer | 0278a90 | 2015-03-16 13:58:24 -0400 | [diff] [blame] | 1281 | CONTROLVM_DEVICE_CHANGESTATE, &inmsg->hdr, rc, |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 1282 | inmsg->hdr.flags.response_expected == 1, 1); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1283 | } |
| 1284 | |
| 1285 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1286 | my_device_destroy(struct controlvm_message *inmsg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1287 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1288 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
Jes Sorensen | 52063ec | 2015-04-13 10:28:41 -0400 | [diff] [blame] | 1289 | u32 bus_no = cmd->destroy_device.bus_no; |
| 1290 | u32 dev_no = cmd->destroy_device.dev_no; |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1291 | struct visor_device *dev_info; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1292 | int rc = CONTROLVM_RESP_SUCCESS; |
| 1293 | |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1294 | dev_info = visorbus_get_device_by_id(bus_no, dev_no, NULL); |
Benjamin Romer | 61715c8 | 2015-03-16 13:58:25 -0400 | [diff] [blame] | 1295 | if (!dev_info) |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1296 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
Benjamin Romer | 61715c8 | 2015-03-16 13:58:25 -0400 | [diff] [blame] | 1297 | else if (dev_info->state.created == 0) |
Ken Cox | 22ad57b | 2014-03-19 13:06:25 -0500 | [diff] [blame] | 1298 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1299 | |
Benjamin Romer | 61715c8 | 2015-03-16 13:58:25 -0400 | [diff] [blame] | 1300 | if ((rc >= CONTROLVM_RESP_SUCCESS) && dev_info) |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 1301 | device_epilog(dev_info, segment_state_running, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1302 | CONTROLVM_DEVICE_DESTROY, &inmsg->hdr, rc, |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 1303 | inmsg->hdr.flags.response_expected == 1, 1); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1304 | } |
| 1305 | |
| 1306 | /* When provided with the physical address of the controlvm channel |
| 1307 | * (phys_addr), the offset to the payload area we need to manage |
| 1308 | * (offset), and the size of this payload area (bytes), fills in the |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1309 | * controlvm_payload_info struct. Returns true for success or false |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1310 | * for failure. |
| 1311 | */ |
| 1312 | static int |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 1313 | initialize_controlvm_payload_info(u64 phys_addr, u64 offset, u32 bytes, |
Jes Sorensen | c1f834e | 2015-04-13 10:28:39 -0400 | [diff] [blame] | 1314 | struct visor_controlvm_payload_info *info) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1315 | { |
Dan Williams | 3103dc0 | 2015-08-10 23:07:06 -0400 | [diff] [blame] | 1316 | u8 *payload = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1317 | |
David Kershner | dde2999 | 2016-03-11 17:01:39 -0500 | [diff] [blame] | 1318 | if (!info) |
| 1319 | return -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
| 1320 | |
Jes Sorensen | c1f834e | 2015-04-13 10:28:39 -0400 | [diff] [blame] | 1321 | memset(info, 0, sizeof(struct visor_controlvm_payload_info)); |
David Kershner | dde2999 | 2016-03-11 17:01:39 -0500 | [diff] [blame] | 1322 | if ((offset == 0) || (bytes == 0)) |
| 1323 | return -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
| 1324 | |
Dan Williams | 3103dc0 | 2015-08-10 23:07:06 -0400 | [diff] [blame] | 1325 | payload = memremap(phys_addr + offset, bytes, MEMREMAP_WB); |
David Kershner | dde2999 | 2016-03-11 17:01:39 -0500 | [diff] [blame] | 1326 | if (!payload) |
| 1327 | return -CONTROLVM_RESP_ERROR_IOREMAP_FAILED; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1328 | |
| 1329 | info->offset = offset; |
| 1330 | info->bytes = bytes; |
| 1331 | info->ptr = payload; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1332 | |
David Kershner | dde2999 | 2016-03-11 17:01:39 -0500 | [diff] [blame] | 1333 | return CONTROLVM_RESP_SUCCESS; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1334 | } |
| 1335 | |
| 1336 | static void |
Jes Sorensen | c1f834e | 2015-04-13 10:28:39 -0400 | [diff] [blame] | 1337 | destroy_controlvm_payload_info(struct visor_controlvm_payload_info *info) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1338 | { |
Benjamin Romer | 597c338 | 2015-03-16 13:58:27 -0400 | [diff] [blame] | 1339 | if (info->ptr) { |
Dan Williams | 3103dc0 | 2015-08-10 23:07:06 -0400 | [diff] [blame] | 1340 | memunmap(info->ptr); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1341 | info->ptr = NULL; |
| 1342 | } |
Jes Sorensen | c1f834e | 2015-04-13 10:28:39 -0400 | [diff] [blame] | 1343 | memset(info, 0, sizeof(struct visor_controlvm_payload_info)); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1344 | } |
| 1345 | |
| 1346 | static void |
| 1347 | initialize_controlvm_payload(void) |
| 1348 | { |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 1349 | u64 phys_addr = visorchannel_get_physaddr(controlvm_channel); |
Benjamin Romer | cafefc0 | 2015-03-16 13:58:28 -0400 | [diff] [blame] | 1350 | u64 payload_offset = 0; |
| 1351 | u32 payload_bytes = 0; |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 1352 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1353 | if (visorchannel_read(controlvm_channel, |
Benjamin Romer | d19642f | 2014-10-23 14:30:34 -0400 | [diff] [blame] | 1354 | offsetof(struct spar_controlvm_channel_protocol, |
| 1355 | request_payload_offset), |
Benjamin Romer | cafefc0 | 2015-03-16 13:58:28 -0400 | [diff] [blame] | 1356 | &payload_offset, sizeof(payload_offset)) < 0) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1357 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
| 1358 | POSTCODE_SEVERITY_ERR); |
| 1359 | return; |
| 1360 | } |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1361 | if (visorchannel_read(controlvm_channel, |
Benjamin Romer | d19642f | 2014-10-23 14:30:34 -0400 | [diff] [blame] | 1362 | offsetof(struct spar_controlvm_channel_protocol, |
| 1363 | request_payload_bytes), |
Benjamin Romer | cafefc0 | 2015-03-16 13:58:28 -0400 | [diff] [blame] | 1364 | &payload_bytes, sizeof(payload_bytes)) < 0) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1365 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
| 1366 | POSTCODE_SEVERITY_ERR); |
| 1367 | return; |
| 1368 | } |
| 1369 | initialize_controlvm_payload_info(phys_addr, |
Benjamin Romer | cafefc0 | 2015-03-16 13:58:28 -0400 | [diff] [blame] | 1370 | payload_offset, payload_bytes, |
Benjamin Romer | 84982fb | 2015-03-16 13:58:07 -0400 | [diff] [blame] | 1371 | &controlvm_payload_info); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | /* Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset. |
| 1375 | * Returns CONTROLVM_RESP_xxx code. |
| 1376 | */ |
Jes Sorensen | d3368a5 | 2015-05-13 13:21:57 -0400 | [diff] [blame] | 1377 | static int |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1378 | visorchipset_chipset_ready(void) |
| 1379 | { |
Benjamin Romer | eb34e87 | 2015-03-16 13:58:45 -0400 | [diff] [blame] | 1380 | kobject_uevent(&visorchipset_platform_device.dev.kobj, KOBJ_ONLINE); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1381 | return CONTROLVM_RESP_SUCCESS; |
| 1382 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1383 | |
Jes Sorensen | d3368a5 | 2015-05-13 13:21:57 -0400 | [diff] [blame] | 1384 | static int |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1385 | visorchipset_chipset_selftest(void) |
| 1386 | { |
| 1387 | char env_selftest[20]; |
| 1388 | char *envp[] = { env_selftest, NULL }; |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 1389 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1390 | sprintf(env_selftest, "SPARSP_SELFTEST=%d", 1); |
Benjamin Romer | eb34e87 | 2015-03-16 13:58:45 -0400 | [diff] [blame] | 1391 | kobject_uevent_env(&visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1392 | envp); |
| 1393 | return CONTROLVM_RESP_SUCCESS; |
| 1394 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1395 | |
| 1396 | /* Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset. |
| 1397 | * Returns CONTROLVM_RESP_xxx code. |
| 1398 | */ |
Jes Sorensen | d3368a5 | 2015-05-13 13:21:57 -0400 | [diff] [blame] | 1399 | static int |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1400 | visorchipset_chipset_notready(void) |
| 1401 | { |
Benjamin Romer | eb34e87 | 2015-03-16 13:58:45 -0400 | [diff] [blame] | 1402 | kobject_uevent(&visorchipset_platform_device.dev.kobj, KOBJ_OFFLINE); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1403 | return CONTROLVM_RESP_SUCCESS; |
| 1404 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1405 | |
| 1406 | static void |
Benjamin Romer | 77a0449 | 2015-03-16 13:58:47 -0400 | [diff] [blame] | 1407 | chipset_ready(struct controlvm_message_header *msg_hdr) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1408 | { |
| 1409 | int rc = visorchipset_chipset_ready(); |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 1410 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1411 | if (rc != CONTROLVM_RESP_SUCCESS) |
| 1412 | rc = -rc; |
Erik Arfvidson | 260d899 | 2016-04-19 08:11:52 -0400 | [diff] [blame] | 1413 | if (msg_hdr->flags.response_expected) |
Benjamin Romer | 77a0449 | 2015-03-16 13:58:47 -0400 | [diff] [blame] | 1414 | controlvm_respond(msg_hdr, rc); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1415 | } |
| 1416 | |
| 1417 | static void |
Benjamin Romer | 77a0449 | 2015-03-16 13:58:47 -0400 | [diff] [blame] | 1418 | chipset_selftest(struct controlvm_message_header *msg_hdr) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1419 | { |
| 1420 | int rc = visorchipset_chipset_selftest(); |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 1421 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1422 | if (rc != CONTROLVM_RESP_SUCCESS) |
| 1423 | rc = -rc; |
Benjamin Romer | 77a0449 | 2015-03-16 13:58:47 -0400 | [diff] [blame] | 1424 | if (msg_hdr->flags.response_expected) |
| 1425 | controlvm_respond(msg_hdr, rc); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | static void |
Benjamin Romer | 77a0449 | 2015-03-16 13:58:47 -0400 | [diff] [blame] | 1429 | chipset_notready(struct controlvm_message_header *msg_hdr) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1430 | { |
| 1431 | int rc = visorchipset_chipset_notready(); |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 1432 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1433 | if (rc != CONTROLVM_RESP_SUCCESS) |
| 1434 | rc = -rc; |
Benjamin Romer | 77a0449 | 2015-03-16 13:58:47 -0400 | [diff] [blame] | 1435 | if (msg_hdr->flags.response_expected) |
| 1436 | controlvm_respond(msg_hdr, rc); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1437 | } |
| 1438 | |
| 1439 | /* This is your "one-stop" shop for grabbing the next message from the |
| 1440 | * CONTROLVM_QUEUE_EVENT queue in the controlvm channel. |
| 1441 | */ |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1442 | static bool |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1443 | read_controlvm_event(struct controlvm_message *msg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1444 | { |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1445 | if (visorchannel_signalremove(controlvm_channel, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1446 | CONTROLVM_QUEUE_EVENT, msg)) { |
| 1447 | /* got a message */ |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 1448 | if (msg->hdr.flags.test_message == 1) |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1449 | return false; |
| 1450 | return true; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1451 | } |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1452 | return false; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1453 | } |
| 1454 | |
| 1455 | /* |
| 1456 | * The general parahotplug flow works as follows. The visorchipset |
| 1457 | * driver receives a DEVICE_CHANGESTATE message from Command |
| 1458 | * specifying a physical device to enable or disable. The CONTROLVM |
| 1459 | * message handler calls parahotplug_process_message, which then adds |
| 1460 | * the message to a global list and kicks off a udev event which |
| 1461 | * causes a user level script to enable or disable the specified |
| 1462 | * device. The udev script then writes to |
| 1463 | * /proc/visorchipset/parahotplug, which causes parahotplug_proc_write |
| 1464 | * to get called, at which point the appropriate CONTROLVM message is |
| 1465 | * retrieved from the list and responded to. |
| 1466 | */ |
| 1467 | |
| 1468 | #define PARAHOTPLUG_TIMEOUT_MS 2000 |
| 1469 | |
| 1470 | /* |
| 1471 | * Generate unique int to match an outstanding CONTROLVM message with a |
| 1472 | * udev script /proc response |
| 1473 | */ |
| 1474 | static int |
| 1475 | parahotplug_next_id(void) |
| 1476 | { |
| 1477 | static atomic_t id = ATOMIC_INIT(0); |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 1478 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1479 | return atomic_inc_return(&id); |
| 1480 | } |
| 1481 | |
| 1482 | /* |
| 1483 | * Returns the time (in jiffies) when a CONTROLVM message on the list |
| 1484 | * should expire -- PARAHOTPLUG_TIMEOUT_MS in the future |
| 1485 | */ |
| 1486 | static unsigned long |
| 1487 | parahotplug_next_expiration(void) |
| 1488 | { |
Nicholas Mc Guire | 2cc1a1b | 2015-01-31 12:02:08 +0100 | [diff] [blame] | 1489 | return jiffies + msecs_to_jiffies(PARAHOTPLUG_TIMEOUT_MS); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1490 | } |
| 1491 | |
| 1492 | /* |
| 1493 | * Create a parahotplug_request, which is basically a wrapper for a |
| 1494 | * CONTROLVM_MESSAGE that we can stick on a list |
| 1495 | */ |
| 1496 | static struct parahotplug_request * |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1497 | parahotplug_request_create(struct controlvm_message *msg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1498 | { |
Quentin Lambert | ea0dcfc | 2015-02-10 15:12:07 +0100 | [diff] [blame] | 1499 | struct parahotplug_request *req; |
| 1500 | |
Benjamin Romer | 6a55e3c | 2015-03-16 13:58:30 -0400 | [diff] [blame] | 1501 | req = kmalloc(sizeof(*req), GFP_KERNEL | __GFP_NORETRY); |
Benjamin Romer | 38f736e | 2015-03-16 13:58:13 -0400 | [diff] [blame] | 1502 | if (!req) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1503 | return NULL; |
| 1504 | |
| 1505 | req->id = parahotplug_next_id(); |
| 1506 | req->expiration = parahotplug_next_expiration(); |
| 1507 | req->msg = *msg; |
| 1508 | |
| 1509 | return req; |
| 1510 | } |
| 1511 | |
| 1512 | /* |
| 1513 | * Free a parahotplug_request. |
| 1514 | */ |
| 1515 | static void |
| 1516 | parahotplug_request_destroy(struct parahotplug_request *req) |
| 1517 | { |
| 1518 | kfree(req); |
| 1519 | } |
| 1520 | |
| 1521 | /* |
| 1522 | * Cause uevent to run the user level script to do the disable/enable |
| 1523 | * specified in (the CONTROLVM message in) the specified |
| 1524 | * parahotplug_request |
| 1525 | */ |
| 1526 | static void |
| 1527 | parahotplug_request_kickoff(struct parahotplug_request *req) |
| 1528 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1529 | struct controlvm_message_packet *cmd = &req->msg.cmd; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1530 | char env_cmd[40], env_id[40], env_state[40], env_bus[40], env_dev[40], |
| 1531 | env_func[40]; |
| 1532 | char *envp[] = { |
| 1533 | env_cmd, env_id, env_state, env_bus, env_dev, env_func, NULL |
| 1534 | }; |
| 1535 | |
| 1536 | sprintf(env_cmd, "SPAR_PARAHOTPLUG=1"); |
| 1537 | sprintf(env_id, "SPAR_PARAHOTPLUG_ID=%d", req->id); |
| 1538 | sprintf(env_state, "SPAR_PARAHOTPLUG_STATE=%d", |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1539 | cmd->device_change_state.state.active); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1540 | sprintf(env_bus, "SPAR_PARAHOTPLUG_BUS=%d", |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1541 | cmd->device_change_state.bus_no); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1542 | sprintf(env_dev, "SPAR_PARAHOTPLUG_DEVICE=%d", |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1543 | cmd->device_change_state.dev_no >> 3); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1544 | sprintf(env_func, "SPAR_PARAHOTPLUG_FUNCTION=%d", |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1545 | cmd->device_change_state.dev_no & 0x7); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1546 | |
Benjamin Romer | eb34e87 | 2015-03-16 13:58:45 -0400 | [diff] [blame] | 1547 | kobject_uevent_env(&visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1548 | envp); |
| 1549 | } |
| 1550 | |
| 1551 | /* |
| 1552 | * Remove any request from the list that's been on there too long and |
| 1553 | * respond with an error. |
| 1554 | */ |
| 1555 | static void |
| 1556 | parahotplug_process_list(void) |
| 1557 | { |
Jes Sorensen | e82ba62 | 2015-05-05 18:35:45 -0400 | [diff] [blame] | 1558 | struct list_head *pos; |
| 1559 | struct list_head *tmp; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1560 | |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1561 | spin_lock(¶hotplug_request_list_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1562 | |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1563 | list_for_each_safe(pos, tmp, ¶hotplug_request_list) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1564 | struct parahotplug_request *req = |
| 1565 | list_entry(pos, struct parahotplug_request, list); |
Benjamin Romer | 55b3341 | 2015-03-16 13:58:29 -0400 | [diff] [blame] | 1566 | |
| 1567 | if (!time_after_eq(jiffies, req->expiration)) |
| 1568 | continue; |
| 1569 | |
| 1570 | list_del(pos); |
| 1571 | if (req->msg.hdr.flags.response_expected) |
| 1572 | controlvm_respond_physdev_changestate( |
| 1573 | &req->msg.hdr, |
| 1574 | CONTROLVM_RESP_ERROR_DEVICE_UDEV_TIMEOUT, |
| 1575 | req->msg.cmd.device_change_state.state); |
| 1576 | parahotplug_request_destroy(req); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1577 | } |
| 1578 | |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1579 | spin_unlock(¶hotplug_request_list_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1580 | } |
| 1581 | |
| 1582 | /* |
| 1583 | * Called from the /proc handler, which means the user script has |
| 1584 | * finished the enable/disable. Find the matching identifier, and |
| 1585 | * respond to the CONTROLVM message with success. |
| 1586 | */ |
| 1587 | static int |
Benjamin Romer | b06bdf7 | 2014-07-31 12:00:49 -0400 | [diff] [blame] | 1588 | parahotplug_request_complete(int id, u16 active) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1589 | { |
Jes Sorensen | e82ba62 | 2015-05-05 18:35:45 -0400 | [diff] [blame] | 1590 | struct list_head *pos; |
| 1591 | struct list_head *tmp; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1592 | |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1593 | spin_lock(¶hotplug_request_list_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1594 | |
| 1595 | /* Look for a request matching "id". */ |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1596 | list_for_each_safe(pos, tmp, ¶hotplug_request_list) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1597 | struct parahotplug_request *req = |
| 1598 | list_entry(pos, struct parahotplug_request, list); |
| 1599 | if (req->id == id) { |
| 1600 | /* Found a match. Remove it from the list and |
| 1601 | * respond. |
| 1602 | */ |
| 1603 | list_del(pos); |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1604 | spin_unlock(¶hotplug_request_list_lock); |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1605 | req->msg.cmd.device_change_state.state.active = active; |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1606 | if (req->msg.hdr.flags.response_expected) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1607 | controlvm_respond_physdev_changestate( |
| 1608 | &req->msg.hdr, CONTROLVM_RESP_SUCCESS, |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1609 | req->msg.cmd.device_change_state.state); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1610 | parahotplug_request_destroy(req); |
| 1611 | return 0; |
| 1612 | } |
| 1613 | } |
| 1614 | |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1615 | spin_unlock(¶hotplug_request_list_lock); |
Erik Arfvidson | 119296e | 2016-05-13 23:17:20 -0400 | [diff] [blame] | 1616 | return -EINVAL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1617 | } |
| 1618 | |
| 1619 | /* |
| 1620 | * Enables or disables a PCI device by kicking off a udev script |
| 1621 | */ |
Ken Cox | bd5b9b3 | 2014-03-13 15:39:22 -0500 | [diff] [blame] | 1622 | static void |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1623 | parahotplug_process_message(struct controlvm_message *inmsg) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1624 | { |
| 1625 | struct parahotplug_request *req; |
| 1626 | |
| 1627 | req = parahotplug_request_create(inmsg); |
| 1628 | |
Benjamin Romer | 38f736e | 2015-03-16 13:58:13 -0400 | [diff] [blame] | 1629 | if (!req) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1630 | return; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1631 | |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1632 | if (inmsg->cmd.device_change_state.state.active) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1633 | /* For enable messages, just respond with success |
| 1634 | * right away. This is a bit of a hack, but there are |
| 1635 | * issues with the early enable messages we get (with |
| 1636 | * either the udev script not detecting that the device |
| 1637 | * is up, or not getting called at all). Fortunately |
| 1638 | * the messages that get lost don't matter anyway, as |
| 1639 | * devices are automatically enabled at |
| 1640 | * initialization. |
| 1641 | */ |
| 1642 | parahotplug_request_kickoff(req); |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 1643 | controlvm_respond_physdev_changestate |
| 1644 | (&inmsg->hdr, |
| 1645 | CONTROLVM_RESP_SUCCESS, |
| 1646 | inmsg->cmd.device_change_state.state); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1647 | parahotplug_request_destroy(req); |
| 1648 | } else { |
| 1649 | /* For disable messages, add the request to the |
| 1650 | * request list before kicking off the udev script. It |
| 1651 | * won't get responded to until the script has |
| 1652 | * indicated it's done. |
| 1653 | */ |
Benjamin Romer | ddf5de5 | 2015-03-16 13:58:41 -0400 | [diff] [blame] | 1654 | spin_lock(¶hotplug_request_list_lock); |
| 1655 | list_add_tail(&req->list, ¶hotplug_request_list); |
| 1656 | spin_unlock(¶hotplug_request_list_lock); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1657 | |
| 1658 | parahotplug_request_kickoff(req); |
| 1659 | } |
| 1660 | } |
| 1661 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1662 | /* Process a controlvm message. |
| 1663 | * Return result: |
Prarit Bhargava | 779d075 | 2015-05-05 18:37:01 -0400 | [diff] [blame] | 1664 | * false - this function will return false only in the case where the |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1665 | * controlvm message was NOT processed, but processing must be |
| 1666 | * retried before reading the next controlvm message; a |
| 1667 | * scenario where this can occur is when we need to throttle |
| 1668 | * the allocation of memory in which to copy out controlvm |
| 1669 | * payload data |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1670 | * true - processing of the controlvm message completed, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1671 | * either successfully or with an error. |
| 1672 | */ |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1673 | static bool |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 1674 | handle_command(struct controlvm_message inmsg, u64 channel_addr) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1675 | { |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1676 | struct controlvm_message_packet *cmd = &inmsg.cmd; |
Jes Sorensen | e82ba62 | 2015-05-05 18:35:45 -0400 | [diff] [blame] | 1677 | u64 parm_addr; |
| 1678 | u32 parm_bytes; |
Benjamin Romer | 317d961 | 2015-03-16 13:57:51 -0400 | [diff] [blame] | 1679 | struct parser_context *parser_ctx = NULL; |
Jes Sorensen | e82ba62 | 2015-05-05 18:35:45 -0400 | [diff] [blame] | 1680 | bool local_addr; |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1681 | struct controlvm_message ackmsg; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1682 | |
| 1683 | /* create parsing context if necessary */ |
Benjamin Romer | 818352a | 2015-03-16 13:58:31 -0400 | [diff] [blame] | 1684 | local_addr = (inmsg.hdr.flags.test_message == 1); |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 1685 | if (channel_addr == 0) |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1686 | return true; |
Benjamin Romer | 818352a | 2015-03-16 13:58:31 -0400 | [diff] [blame] | 1687 | parm_addr = channel_addr + inmsg.hdr.payload_vm_offset; |
| 1688 | parm_bytes = inmsg.hdr.payload_bytes; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1689 | |
| 1690 | /* Parameter and channel addresses within test messages actually lie |
| 1691 | * within our OS-controlled memory. We need to know that, because it |
| 1692 | * makes a difference in how we compute the virtual address. |
| 1693 | */ |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 1694 | if (parm_addr && parm_bytes) { |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1695 | bool retry = false; |
Benjamin Romer | 26eb2c0 | 2014-08-18 09:34:53 -0400 | [diff] [blame] | 1696 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1697 | parser_ctx = |
Benjamin Romer | 818352a | 2015-03-16 13:58:31 -0400 | [diff] [blame] | 1698 | parser_init_byte_stream(parm_addr, parm_bytes, |
| 1699 | local_addr, &retry); |
Benjamin Romer | 1b08872 | 2015-03-04 12:14:26 -0500 | [diff] [blame] | 1700 | if (!parser_ctx && retry) |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1701 | return false; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1702 | } |
| 1703 | |
Benjamin Romer | 818352a | 2015-03-16 13:58:31 -0400 | [diff] [blame] | 1704 | if (!local_addr) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1705 | controlvm_init_response(&ackmsg, &inmsg.hdr, |
| 1706 | CONTROLVM_RESP_SUCCESS); |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1707 | if (controlvm_channel) |
| 1708 | visorchannel_signalinsert(controlvm_channel, |
Benjamin Romer | 1b08872 | 2015-03-04 12:14:26 -0500 | [diff] [blame] | 1709 | CONTROLVM_QUEUE_ACK, |
| 1710 | &ackmsg); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1711 | } |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1712 | switch (inmsg.hdr.id) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1713 | case CONTROLVM_CHIPSET_INIT: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1714 | chipset_init(&inmsg); |
| 1715 | break; |
| 1716 | case CONTROLVM_BUS_CREATE: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1717 | bus_create(&inmsg); |
| 1718 | break; |
| 1719 | case CONTROLVM_BUS_DESTROY: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1720 | bus_destroy(&inmsg); |
| 1721 | break; |
| 1722 | case CONTROLVM_BUS_CONFIGURE: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1723 | bus_configure(&inmsg, parser_ctx); |
| 1724 | break; |
| 1725 | case CONTROLVM_DEVICE_CREATE: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1726 | my_device_create(&inmsg); |
| 1727 | break; |
| 1728 | case CONTROLVM_DEVICE_CHANGESTATE: |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1729 | if (cmd->device_change_state.flags.phys_device) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1730 | parahotplug_process_message(&inmsg); |
| 1731 | } else { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1732 | /* save the hdr and cmd structures for later use */ |
| 1733 | /* when sending back the response to Command */ |
| 1734 | my_device_changestate(&inmsg); |
Benjamin Romer | 4f44b72 | 2015-03-16 13:58:02 -0400 | [diff] [blame] | 1735 | g_devicechangestate_packet = inmsg.cmd; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1736 | break; |
| 1737 | } |
| 1738 | break; |
| 1739 | case CONTROLVM_DEVICE_DESTROY: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1740 | my_device_destroy(&inmsg); |
| 1741 | break; |
| 1742 | case CONTROLVM_DEVICE_CONFIGURE: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1743 | /* no op for now, just send a respond that we passed */ |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1744 | if (inmsg.hdr.flags.response_expected) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1745 | controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS); |
| 1746 | break; |
| 1747 | case CONTROLVM_CHIPSET_READY: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1748 | chipset_ready(&inmsg.hdr); |
| 1749 | break; |
| 1750 | case CONTROLVM_CHIPSET_SELFTEST: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1751 | chipset_selftest(&inmsg.hdr); |
| 1752 | break; |
| 1753 | case CONTROLVM_CHIPSET_STOP: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1754 | chipset_notready(&inmsg.hdr); |
| 1755 | break; |
| 1756 | default: |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1757 | if (inmsg.hdr.flags.response_expected) |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 1758 | controlvm_respond |
| 1759 | (&inmsg.hdr, |
| 1760 | -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1761 | break; |
| 1762 | } |
| 1763 | |
Benjamin Romer | 38f736e | 2015-03-16 13:58:13 -0400 | [diff] [blame] | 1764 | if (parser_ctx) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1765 | parser_done(parser_ctx); |
| 1766 | parser_ctx = NULL; |
| 1767 | } |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1768 | return true; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1769 | } |
| 1770 | |
David Kershner | 5f3a7e3 | 2015-05-13 13:22:10 -0400 | [diff] [blame] | 1771 | static inline unsigned int |
| 1772 | issue_vmcall_io_controlvm_addr(u64 *control_addr, u32 *control_bytes) |
| 1773 | { |
| 1774 | struct vmcall_io_controlvm_addr_params params; |
| 1775 | int result = VMCALL_SUCCESS; |
| 1776 | u64 physaddr; |
| 1777 | |
| 1778 | physaddr = virt_to_phys(¶ms); |
| 1779 | ISSUE_IO_VMCALL(VMCALL_IO_CONTROLVM_ADDR, physaddr, result); |
| 1780 | if (VMCALL_SUCCESSFUL(result)) { |
| 1781 | *control_addr = params.address; |
| 1782 | *control_bytes = params.channel_bytes; |
| 1783 | } |
| 1784 | return result; |
| 1785 | } |
| 1786 | |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 1787 | static u64 controlvm_get_channel_address(void) |
Benjamin Romer | 524b0b6 | 2014-07-17 12:39:57 -0400 | [diff] [blame] | 1788 | { |
Benjamin Romer | 5fc0229 | 2014-07-31 12:00:51 -0400 | [diff] [blame] | 1789 | u64 addr = 0; |
Benjamin Romer | b3c55b1 | 2014-07-31 12:00:50 -0400 | [diff] [blame] | 1790 | u32 size = 0; |
Benjamin Romer | 524b0b6 | 2014-07-17 12:39:57 -0400 | [diff] [blame] | 1791 | |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 1792 | if (!VMCALL_SUCCESSFUL(issue_vmcall_io_controlvm_addr(&addr, &size))) |
Benjamin Romer | 524b0b6 | 2014-07-17 12:39:57 -0400 | [diff] [blame] | 1793 | return 0; |
Benjamin Romer | 0aca7844 | 2015-03-04 12:14:25 -0500 | [diff] [blame] | 1794 | |
Benjamin Romer | 524b0b6 | 2014-07-17 12:39:57 -0400 | [diff] [blame] | 1795 | return addr; |
| 1796 | } |
| 1797 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1798 | static void |
| 1799 | controlvm_periodic_work(struct work_struct *work) |
| 1800 | { |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1801 | struct controlvm_message inmsg; |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1802 | bool got_command = false; |
| 1803 | bool handle_command_failed = false; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1804 | |
| 1805 | /* make sure visorbus server is registered for controlvm callbacks */ |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 1806 | if (visorchipset_visorbusregwait && !visorbusregistered) |
Benjamin Romer | 1c1ed29 | 2015-03-16 13:58:32 -0400 | [diff] [blame] | 1807 | goto cleanup; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1808 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1809 | while (visorchannel_signalremove(controlvm_channel, |
Benjamin Romer | 8a1182e | 2014-07-17 12:39:58 -0400 | [diff] [blame] | 1810 | CONTROLVM_QUEUE_RESPONSE, |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1811 | &inmsg)) |
| 1812 | ; |
Benjamin Romer | 1c1ed29 | 2015-03-16 13:58:32 -0400 | [diff] [blame] | 1813 | if (!got_command) { |
Benjamin Romer | 7166ed1 | 2015-03-16 13:58:38 -0400 | [diff] [blame] | 1814 | if (controlvm_pending_msg_valid) { |
Benjamin Romer | 8a1182e | 2014-07-17 12:39:58 -0400 | [diff] [blame] | 1815 | /* we throttled processing of a prior |
| 1816 | * msg, so try to process it again |
| 1817 | * rather than reading a new one |
| 1818 | */ |
Benjamin Romer | 7166ed1 | 2015-03-16 13:58:38 -0400 | [diff] [blame] | 1819 | inmsg = controlvm_pending_msg; |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1820 | controlvm_pending_msg_valid = false; |
Benjamin Romer | 1c1ed29 | 2015-03-16 13:58:32 -0400 | [diff] [blame] | 1821 | got_command = true; |
Benjamin Romer | 75c1f8b | 2015-03-16 13:58:19 -0400 | [diff] [blame] | 1822 | } else { |
Benjamin Romer | 1c1ed29 | 2015-03-16 13:58:32 -0400 | [diff] [blame] | 1823 | got_command = read_controlvm_event(&inmsg); |
Benjamin Romer | 75c1f8b | 2015-03-16 13:58:19 -0400 | [diff] [blame] | 1824 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1825 | } |
| 1826 | |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1827 | handle_command_failed = false; |
Benjamin Romer | 1c1ed29 | 2015-03-16 13:58:32 -0400 | [diff] [blame] | 1828 | while (got_command && (!handle_command_failed)) { |
Benjamin Romer | b53e0e9 | 2015-03-16 13:57:56 -0400 | [diff] [blame] | 1829 | most_recent_message_jiffies = jiffies; |
Benjamin Romer | 8a1182e | 2014-07-17 12:39:58 -0400 | [diff] [blame] | 1830 | if (handle_command(inmsg, |
| 1831 | visorchannel_get_physaddr |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1832 | (controlvm_channel))) |
Benjamin Romer | 1c1ed29 | 2015-03-16 13:58:32 -0400 | [diff] [blame] | 1833 | got_command = read_controlvm_event(&inmsg); |
Benjamin Romer | 8a1182e | 2014-07-17 12:39:58 -0400 | [diff] [blame] | 1834 | else { |
| 1835 | /* this is a scenario where throttling |
| 1836 | * is required, but probably NOT an |
| 1837 | * error...; we stash the current |
| 1838 | * controlvm msg so we will attempt to |
| 1839 | * reprocess it on our next loop |
| 1840 | */ |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1841 | handle_command_failed = true; |
Benjamin Romer | 7166ed1 | 2015-03-16 13:58:38 -0400 | [diff] [blame] | 1842 | controlvm_pending_msg = inmsg; |
Jes Sorensen | f4c1155 | 2015-04-13 10:28:40 -0400 | [diff] [blame] | 1843 | controlvm_pending_msg_valid = true; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1844 | } |
| 1845 | } |
| 1846 | |
| 1847 | /* parahotplug_worker */ |
| 1848 | parahotplug_process_list(); |
| 1849 | |
Benjamin Romer | 1c1ed29 | 2015-03-16 13:58:32 -0400 | [diff] [blame] | 1850 | cleanup: |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1851 | |
| 1852 | if (time_after(jiffies, |
Benjamin Romer | b53e0e9 | 2015-03-16 13:57:56 -0400 | [diff] [blame] | 1853 | most_recent_message_jiffies + (HZ * MIN_IDLE_SECONDS))) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1854 | /* it's been longer than MIN_IDLE_SECONDS since we |
| 1855 | * processed our last controlvm message; slow down the |
| 1856 | * polling |
| 1857 | */ |
Benjamin Romer | 911e213 | 2015-03-16 13:57:47 -0400 | [diff] [blame] | 1858 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_SLOW) |
| 1859 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1860 | } else { |
Benjamin Romer | 911e213 | 2015-03-16 13:57:47 -0400 | [diff] [blame] | 1861 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_FAST) |
| 1862 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1863 | } |
| 1864 | |
Amitoj Kaur Chawla | 0bde297 | 2016-02-28 18:14:16 +0530 | [diff] [blame] | 1865 | schedule_delayed_work(&periodic_controlvm_work, poll_jiffies); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1866 | } |
| 1867 | |
| 1868 | static void |
| 1869 | setup_crash_devices_work_queue(struct work_struct *work) |
| 1870 | { |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1871 | struct controlvm_message local_crash_bus_msg; |
| 1872 | struct controlvm_message local_crash_dev_msg; |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1873 | struct controlvm_message msg; |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1874 | u32 local_crash_msg_offset; |
| 1875 | u16 local_crash_msg_count; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1876 | |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 1877 | /* make sure visorbus is registered for controlvm callbacks */ |
David Kershner | b899963 | 2016-03-11 17:01:38 -0500 | [diff] [blame] | 1878 | if (visorchipset_visorbusregwait && !visorbusregistered) { |
| 1879 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; |
| 1880 | schedule_delayed_work(&periodic_controlvm_work, poll_jiffies); |
| 1881 | return; |
| 1882 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1883 | |
| 1884 | POSTCODE_LINUX_2(CRASH_DEV_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| 1885 | |
| 1886 | /* send init chipset msg */ |
Benjamin Romer | 98d7b59 | 2014-10-23 14:30:26 -0400 | [diff] [blame] | 1887 | msg.hdr.id = CONTROLVM_CHIPSET_INIT; |
Benjamin Romer | 2ea5117 | 2014-10-23 14:30:25 -0400 | [diff] [blame] | 1888 | msg.cmd.init_chipset.bus_count = 23; |
| 1889 | msg.cmd.init_chipset.switch_count = 0; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1890 | |
| 1891 | chipset_init(&msg); |
| 1892 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1893 | /* get saved message count */ |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1894 | if (visorchannel_read(controlvm_channel, |
Benjamin Romer | d19642f | 2014-10-23 14:30:34 -0400 | [diff] [blame] | 1895 | offsetof(struct spar_controlvm_channel_protocol, |
| 1896 | saved_crash_message_count), |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1897 | &local_crash_msg_count, sizeof(u16)) < 0) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1898 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
| 1899 | POSTCODE_SEVERITY_ERR); |
| 1900 | return; |
| 1901 | } |
| 1902 | |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1903 | if (local_crash_msg_count != CONTROLVM_CRASHMSG_MAX) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1904 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1905 | local_crash_msg_count, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1906 | POSTCODE_SEVERITY_ERR); |
| 1907 | return; |
| 1908 | } |
| 1909 | |
| 1910 | /* get saved crash message offset */ |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1911 | if (visorchannel_read(controlvm_channel, |
Benjamin Romer | d19642f | 2014-10-23 14:30:34 -0400 | [diff] [blame] | 1912 | offsetof(struct spar_controlvm_channel_protocol, |
| 1913 | saved_crash_message_offset), |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1914 | &local_crash_msg_offset, sizeof(u32)) < 0) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1915 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
| 1916 | POSTCODE_SEVERITY_ERR); |
| 1917 | return; |
| 1918 | } |
| 1919 | |
| 1920 | /* read create device message for storage bus offset */ |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1921 | if (visorchannel_read(controlvm_channel, |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1922 | local_crash_msg_offset, |
| 1923 | &local_crash_bus_msg, |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1924 | sizeof(struct controlvm_message)) < 0) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1925 | POSTCODE_LINUX_2(CRASH_DEV_RD_BUS_FAIULRE_PC, |
| 1926 | POSTCODE_SEVERITY_ERR); |
| 1927 | return; |
| 1928 | } |
| 1929 | |
| 1930 | /* read create device message for storage device */ |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 1931 | if (visorchannel_read(controlvm_channel, |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1932 | local_crash_msg_offset + |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1933 | sizeof(struct controlvm_message), |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1934 | &local_crash_dev_msg, |
Benjamin Romer | 3ab4770 | 2014-10-23 14:30:31 -0400 | [diff] [blame] | 1935 | sizeof(struct controlvm_message)) < 0) { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1936 | POSTCODE_LINUX_2(CRASH_DEV_RD_DEV_FAIULRE_PC, |
| 1937 | POSTCODE_SEVERITY_ERR); |
| 1938 | return; |
| 1939 | } |
| 1940 | |
| 1941 | /* reuse IOVM create bus message */ |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 1942 | if (local_crash_bus_msg.cmd.create_bus.channel_addr) { |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1943 | bus_create(&local_crash_bus_msg); |
Benjamin Romer | 75c1f8b | 2015-03-16 13:58:19 -0400 | [diff] [blame] | 1944 | } else { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1945 | POSTCODE_LINUX_2(CRASH_DEV_BUS_NULL_FAILURE_PC, |
| 1946 | POSTCODE_SEVERITY_ERR); |
| 1947 | return; |
| 1948 | } |
| 1949 | |
| 1950 | /* reuse create device message for storage device */ |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 1951 | if (local_crash_dev_msg.cmd.create_device.channel_addr) { |
Benjamin Romer | e6bdb90 | 2015-03-16 13:58:33 -0400 | [diff] [blame] | 1952 | my_device_create(&local_crash_dev_msg); |
Benjamin Romer | 75c1f8b | 2015-03-16 13:58:19 -0400 | [diff] [blame] | 1953 | } else { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1954 | POSTCODE_LINUX_2(CRASH_DEV_DEV_NULL_FAILURE_PC, |
| 1955 | POSTCODE_SEVERITY_ERR); |
| 1956 | return; |
| 1957 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1958 | POSTCODE_LINUX_2(CRASH_DEV_EXIT_PC, POSTCODE_SEVERITY_INFO); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1959 | } |
| 1960 | |
| 1961 | static void |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1962 | bus_create_response(struct visor_device *bus_info, int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1963 | { |
Alessandro Parini | 4b4fd43 | 2015-06-13 17:40:48 +0200 | [diff] [blame] | 1964 | if (response >= 0) |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1965 | bus_info->state.created = 1; |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1966 | |
| 1967 | bus_responder(CONTROLVM_BUS_CREATE, bus_info->pending_msg_hdr, |
| 1968 | response); |
| 1969 | |
| 1970 | kfree(bus_info->pending_msg_hdr); |
| 1971 | bus_info->pending_msg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1972 | } |
| 1973 | |
| 1974 | static void |
Don Zickus | d32517e | 2015-06-04 09:22:41 -0400 | [diff] [blame] | 1975 | bus_destroy_response(struct visor_device *bus_info, int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1976 | { |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1977 | bus_responder(CONTROLVM_BUS_DESTROY, bus_info->pending_msg_hdr, |
| 1978 | response); |
| 1979 | |
| 1980 | kfree(bus_info->pending_msg_hdr); |
| 1981 | bus_info->pending_msg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1982 | } |
| 1983 | |
| 1984 | static void |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1985 | device_create_response(struct visor_device *dev_info, int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1986 | { |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 1987 | if (response >= 0) |
| 1988 | dev_info->state.created = 1; |
| 1989 | |
| 1990 | device_responder(CONTROLVM_DEVICE_CREATE, dev_info->pending_msg_hdr, |
| 1991 | response); |
| 1992 | |
| 1993 | kfree(dev_info->pending_msg_hdr); |
Tim Sell | addce19 | 2015-07-09 13:27:41 -0400 | [diff] [blame] | 1994 | dev_info->pending_msg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1995 | } |
| 1996 | |
| 1997 | static void |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 1998 | device_destroy_response(struct visor_device *dev_info, int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 1999 | { |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 2000 | device_responder(CONTROLVM_DEVICE_DESTROY, dev_info->pending_msg_hdr, |
| 2001 | response); |
| 2002 | |
| 2003 | kfree(dev_info->pending_msg_hdr); |
| 2004 | dev_info->pending_msg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2005 | } |
| 2006 | |
Jes Sorensen | d3368a5 | 2015-05-13 13:21:57 -0400 | [diff] [blame] | 2007 | static void |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 2008 | visorchipset_device_pause_response(struct visor_device *dev_info, |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 2009 | int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2010 | { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2011 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 2012 | dev_info, response, |
Benjamin Romer | bd0d2dc | 2014-10-23 14:30:13 -0400 | [diff] [blame] | 2013 | segment_state_standby); |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 2014 | |
| 2015 | kfree(dev_info->pending_msg_hdr); |
| 2016 | dev_info->pending_msg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2017 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2018 | |
| 2019 | static void |
Don Zickus | a298bc0 | 2015-06-04 09:22:42 -0400 | [diff] [blame] | 2020 | device_resume_response(struct visor_device *dev_info, int response) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2021 | { |
| 2022 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, |
Don Zickus | b4b598f | 2015-05-13 13:22:25 -0400 | [diff] [blame] | 2023 | dev_info, response, |
Benjamin Romer | bd0d2dc | 2014-10-23 14:30:13 -0400 | [diff] [blame] | 2024 | segment_state_running); |
Don Zickus | 0274b5a | 2015-06-01 13:00:27 -0400 | [diff] [blame] | 2025 | |
| 2026 | kfree(dev_info->pending_msg_hdr); |
| 2027 | dev_info->pending_msg_hdr = NULL; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2028 | } |
| 2029 | |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 2030 | /* The parahotplug/devicedisabled interface gets called by our support script |
| 2031 | * when an SR-IOV device has been shut down. The ID is passed to the script |
| 2032 | * and then passed back when the device has been removed. |
| 2033 | */ |
| 2034 | static ssize_t devicedisabled_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 2035 | struct device_attribute *attr, |
| 2036 | const char *buf, size_t count) |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 2037 | { |
Jes Sorensen | 9421736 | 2015-05-05 18:35:46 -0400 | [diff] [blame] | 2038 | unsigned int id; |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 2039 | |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 2040 | if (kstrtouint(buf, 10, &id)) |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 2041 | return -EINVAL; |
| 2042 | |
| 2043 | parahotplug_request_complete(id, 0); |
| 2044 | return count; |
| 2045 | } |
| 2046 | |
| 2047 | /* The parahotplug/deviceenabled interface gets called by our support script |
| 2048 | * when an SR-IOV device has been recovered. The ID is passed to the script |
| 2049 | * and then passed back when the device has been brought back up. |
| 2050 | */ |
| 2051 | static ssize_t deviceenabled_store(struct device *dev, |
Benjamin Romer | 8e76e69 | 2015-03-16 13:58:52 -0400 | [diff] [blame] | 2052 | struct device_attribute *attr, |
| 2053 | const char *buf, size_t count) |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 2054 | { |
Jes Sorensen | 9421736 | 2015-05-05 18:35:46 -0400 | [diff] [blame] | 2055 | unsigned int id; |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 2056 | |
Jes Sorensen | ebec896 | 2015-05-05 18:35:57 -0400 | [diff] [blame] | 2057 | if (kstrtouint(buf, 10, &id)) |
Benjamin Romer | e56fa7c | 2014-07-29 11:11:21 -0400 | [diff] [blame] | 2058 | return -EINVAL; |
| 2059 | |
| 2060 | parahotplug_request_complete(id, 1); |
| 2061 | return count; |
| 2062 | } |
| 2063 | |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2064 | static int |
| 2065 | visorchipset_mmap(struct file *file, struct vm_area_struct *vma) |
| 2066 | { |
| 2067 | unsigned long physaddr = 0; |
| 2068 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; |
Erik Arfvidson | 780fcad | 2015-05-05 18:36:35 -0400 | [diff] [blame] | 2069 | u64 addr = 0; |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2070 | |
| 2071 | /* sv_enable_dfp(); */ |
| 2072 | if (offset & (PAGE_SIZE - 1)) |
| 2073 | return -ENXIO; /* need aligned offsets */ |
| 2074 | |
| 2075 | switch (offset) { |
| 2076 | case VISORCHIPSET_MMAP_CONTROLCHANOFFSET: |
| 2077 | vma->vm_flags |= VM_IO; |
| 2078 | if (!*file_controlvm_channel) |
| 2079 | return -ENXIO; |
| 2080 | |
Tim Sell | a07d7c3 | 2016-04-04 23:31:12 -0400 | [diff] [blame] | 2081 | visorchannel_read |
| 2082 | (*file_controlvm_channel, |
| 2083 | offsetof(struct spar_controlvm_channel_protocol, |
| 2084 | gp_control_channel), |
| 2085 | &addr, sizeof(addr)); |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2086 | if (!addr) |
| 2087 | return -ENXIO; |
| 2088 | |
| 2089 | physaddr = (unsigned long)addr; |
| 2090 | if (remap_pfn_range(vma, vma->vm_start, |
| 2091 | physaddr >> PAGE_SHIFT, |
| 2092 | vma->vm_end - vma->vm_start, |
| 2093 | /*pgprot_noncached */ |
| 2094 | (vma->vm_page_prot))) { |
| 2095 | return -EAGAIN; |
| 2096 | } |
| 2097 | break; |
| 2098 | default: |
| 2099 | return -ENXIO; |
| 2100 | } |
| 2101 | return 0; |
| 2102 | } |
| 2103 | |
David Kershner | 5f3a7e3 | 2015-05-13 13:22:10 -0400 | [diff] [blame] | 2104 | static inline s64 issue_vmcall_query_guest_virtual_time_offset(void) |
| 2105 | { |
| 2106 | u64 result = VMCALL_SUCCESS; |
| 2107 | u64 physaddr = 0; |
| 2108 | |
| 2109 | ISSUE_IO_VMCALL(VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET, physaddr, |
| 2110 | result); |
| 2111 | return result; |
| 2112 | } |
| 2113 | |
| 2114 | static inline int issue_vmcall_update_physical_time(u64 adjustment) |
| 2115 | { |
| 2116 | int result = VMCALL_SUCCESS; |
| 2117 | |
| 2118 | ISSUE_IO_VMCALL(VMCALL_UPDATE_PHYSICAL_TIME, adjustment, result); |
| 2119 | return result; |
| 2120 | } |
| 2121 | |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2122 | static long visorchipset_ioctl(struct file *file, unsigned int cmd, |
| 2123 | unsigned long arg) |
| 2124 | { |
David Kershner | 2500276 | 2016-03-03 13:00:38 -0500 | [diff] [blame] | 2125 | u64 adjustment; |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2126 | s64 vrtc_offset; |
| 2127 | |
| 2128 | switch (cmd) { |
| 2129 | case VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET: |
| 2130 | /* get the physical rtc offset */ |
| 2131 | vrtc_offset = issue_vmcall_query_guest_virtual_time_offset(); |
| 2132 | if (copy_to_user((void __user *)arg, &vrtc_offset, |
| 2133 | sizeof(vrtc_offset))) { |
| 2134 | return -EFAULT; |
| 2135 | } |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 2136 | return 0; |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2137 | case VMCALL_UPDATE_PHYSICAL_TIME: |
| 2138 | if (copy_from_user(&adjustment, (void __user *)arg, |
| 2139 | sizeof(adjustment))) { |
| 2140 | return -EFAULT; |
| 2141 | } |
| 2142 | return issue_vmcall_update_physical_time(adjustment); |
| 2143 | default: |
| 2144 | return -EFAULT; |
| 2145 | } |
| 2146 | } |
| 2147 | |
| 2148 | static const struct file_operations visorchipset_fops = { |
| 2149 | .owner = THIS_MODULE, |
| 2150 | .open = visorchipset_open, |
| 2151 | .read = NULL, |
| 2152 | .write = NULL, |
| 2153 | .unlocked_ioctl = visorchipset_ioctl, |
| 2154 | .release = visorchipset_release, |
| 2155 | .mmap = visorchipset_mmap, |
| 2156 | }; |
| 2157 | |
Jes Sorensen | 0f570fc | 2015-05-13 13:21:55 -0400 | [diff] [blame] | 2158 | static int |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2159 | visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel) |
| 2160 | { |
| 2161 | int rc = 0; |
| 2162 | |
| 2163 | file_controlvm_channel = controlvm_channel; |
| 2164 | cdev_init(&file_cdev, &visorchipset_fops); |
| 2165 | file_cdev.owner = THIS_MODULE; |
| 2166 | if (MAJOR(major_dev) == 0) { |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 2167 | rc = alloc_chrdev_region(&major_dev, 0, 1, "visorchipset"); |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2168 | /* dynamic major device number registration required */ |
| 2169 | if (rc < 0) |
| 2170 | return rc; |
| 2171 | } else { |
| 2172 | /* static major device number registration required */ |
Erik Arfvidson | 4616881 | 2015-05-05 18:36:14 -0400 | [diff] [blame] | 2173 | rc = register_chrdev_region(major_dev, 1, "visorchipset"); |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2174 | if (rc < 0) |
| 2175 | return rc; |
| 2176 | } |
| 2177 | rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1); |
| 2178 | if (rc < 0) { |
| 2179 | unregister_chrdev_region(major_dev, 1); |
| 2180 | return rc; |
| 2181 | } |
| 2182 | return 0; |
| 2183 | } |
| 2184 | |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2185 | static void |
| 2186 | visorchipset_file_cleanup(dev_t major_dev) |
| 2187 | { |
| 2188 | if (file_cdev.ops) |
| 2189 | cdev_del(&file_cdev); |
| 2190 | file_cdev.ops = NULL; |
| 2191 | unregister_chrdev_region(major_dev, 1); |
| 2192 | } |
| 2193 | |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 2194 | static int |
| 2195 | visorchipset_init(struct acpi_device *acpi_device) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2196 | { |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2197 | int err = -ENODEV; |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 2198 | u64 addr; |
Jes Sorensen | d3368a5 | 2015-05-13 13:21:57 -0400 | [diff] [blame] | 2199 | uuid_le uuid = SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID; |
| 2200 | |
| 2201 | addr = controlvm_get_channel_address(); |
| 2202 | if (!addr) |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2203 | goto error; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2204 | |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 2205 | memset(&busdev_notifiers, 0, sizeof(busdev_notifiers)); |
Benjamin Romer | 84982fb | 2015-03-16 13:58:07 -0400 | [diff] [blame] | 2206 | memset(&controlvm_payload_info, 0, sizeof(controlvm_payload_info)); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2207 | |
Tim Sell | c732623b | 2016-03-01 19:45:03 -0500 | [diff] [blame] | 2208 | controlvm_channel = visorchannel_create_with_lock(addr, 0, |
Jes Sorensen | d3368a5 | 2015-05-13 13:21:57 -0400 | [diff] [blame] | 2209 | GFP_KERNEL, uuid); |
Tim Sell | c732623b | 2016-03-01 19:45:03 -0500 | [diff] [blame] | 2210 | if (!controlvm_channel) |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2211 | goto error; |
| 2212 | |
Jes Sorensen | d3368a5 | 2015-05-13 13:21:57 -0400 | [diff] [blame] | 2213 | if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT( |
| 2214 | visorchannel_get_header(controlvm_channel))) { |
| 2215 | initialize_controlvm_payload(); |
Benjamin Romer | 8a1182e | 2014-07-17 12:39:58 -0400 | [diff] [blame] | 2216 | } else { |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2217 | goto error_destroy_channel; |
Benjamin Romer | 8a1182e | 2014-07-17 12:39:58 -0400 | [diff] [blame] | 2218 | } |
| 2219 | |
Benjamin Romer | 5aa8ae5 | 2015-03-16 13:58:44 -0400 | [diff] [blame] | 2220 | major_dev = MKDEV(visorchipset_major, 0); |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2221 | err = visorchipset_file_init(major_dev, &controlvm_channel); |
| 2222 | if (err < 0) |
| 2223 | goto error_destroy_payload; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2224 | |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 2225 | /* if booting in a crash kernel */ |
| 2226 | if (is_kdump_kernel()) |
| 2227 | INIT_DELAYED_WORK(&periodic_controlvm_work, |
| 2228 | setup_crash_devices_work_queue); |
| 2229 | else |
| 2230 | INIT_DELAYED_WORK(&periodic_controlvm_work, |
| 2231 | controlvm_periodic_work); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2232 | |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 2233 | most_recent_message_jiffies = jiffies; |
| 2234 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
Amitoj Kaur Chawla | 0bde297 | 2016-02-28 18:14:16 +0530 | [diff] [blame] | 2235 | schedule_delayed_work(&periodic_controlvm_work, poll_jiffies); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2236 | |
Benjamin Romer | eb34e87 | 2015-03-16 13:58:45 -0400 | [diff] [blame] | 2237 | visorchipset_platform_device.dev.devt = major_dev; |
| 2238 | if (platform_device_register(&visorchipset_platform_device) < 0) { |
Ken Cox | 4cb005a | 2014-03-19 13:06:20 -0500 | [diff] [blame] | 2239 | POSTCODE_LINUX_2(DEVICE_REGISTER_FAILURE_PC, DIAG_SEVERITY_ERR); |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2240 | err = -ENODEV; |
| 2241 | goto error_cancel_work; |
Ken Cox | 4cb005a | 2014-03-19 13:06:20 -0500 | [diff] [blame] | 2242 | } |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2243 | POSTCODE_LINUX_2(CHIPSET_INIT_SUCCESS_PC, POSTCODE_SEVERITY_INFO); |
Prarit Bhargava | c79b28f | 2015-05-05 18:36:15 -0400 | [diff] [blame] | 2244 | |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2245 | err = visorbus_init(); |
| 2246 | if (err < 0) |
| 2247 | goto error_unregister; |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2248 | |
David Kershner | 1366a3d | 2016-04-04 23:31:37 -0400 | [diff] [blame] | 2249 | return 0; |
| 2250 | |
| 2251 | error_unregister: |
| 2252 | platform_device_unregister(&visorchipset_platform_device); |
| 2253 | |
| 2254 | error_cancel_work: |
| 2255 | cancel_delayed_work_sync(&periodic_controlvm_work); |
| 2256 | visorchipset_file_cleanup(major_dev); |
| 2257 | |
| 2258 | error_destroy_payload: |
| 2259 | destroy_controlvm_payload_info(&controlvm_payload_info); |
| 2260 | |
| 2261 | error_destroy_channel: |
| 2262 | visorchannel_destroy(controlvm_channel); |
| 2263 | |
| 2264 | error: |
| 2265 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, err, POSTCODE_SEVERITY_ERR); |
| 2266 | return err; |
Erik Arfvidson | e3420ed | 2015-05-05 18:36:13 -0400 | [diff] [blame] | 2267 | } |
| 2268 | |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 2269 | static int |
| 2270 | visorchipset_exit(struct acpi_device *acpi_device) |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2271 | { |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2272 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); |
| 2273 | |
Prarit Bhargava | c79b28f | 2015-05-05 18:36:15 -0400 | [diff] [blame] | 2274 | visorbus_exit(); |
| 2275 | |
Amitoj Kaur Chawla | 0bde297 | 2016-02-28 18:14:16 +0530 | [diff] [blame] | 2276 | cancel_delayed_work_sync(&periodic_controlvm_work); |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 2277 | destroy_controlvm_payload_info(&controlvm_payload_info); |
Benjamin Romer | 1783319 | 2014-07-15 13:30:41 -0400 | [diff] [blame] | 2278 | |
Benjamin Romer | c3d9a22 | 2015-03-16 13:58:05 -0400 | [diff] [blame] | 2279 | visorchannel_destroy(controlvm_channel); |
Benjamin Romer | 8a1182e | 2014-07-17 12:39:58 -0400 | [diff] [blame] | 2280 | |
Sudip Mukherjee | addceb1 | 2015-03-24 20:47:28 +0530 | [diff] [blame] | 2281 | visorchipset_file_cleanup(visorchipset_platform_device.dev.devt); |
Don Zickus | 04dacac | 2015-06-04 09:22:48 -0400 | [diff] [blame] | 2282 | platform_device_unregister(&visorchipset_platform_device); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2283 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 2284 | |
| 2285 | return 0; |
| 2286 | } |
| 2287 | |
| 2288 | static const struct acpi_device_id unisys_device_ids[] = { |
| 2289 | {"PNP0A07", 0}, |
| 2290 | {"", 0}, |
| 2291 | }; |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 2292 | |
| 2293 | static struct acpi_driver unisys_acpi_driver = { |
| 2294 | .name = "unisys_acpi", |
| 2295 | .class = "unisys_acpi_class", |
| 2296 | .owner = THIS_MODULE, |
| 2297 | .ids = unisys_device_ids, |
| 2298 | .ops = { |
| 2299 | .add = visorchipset_init, |
| 2300 | .remove = visorchipset_exit, |
| 2301 | }, |
| 2302 | }; |
David Kershner | 1fc07f9 | 2015-07-09 13:27:53 -0400 | [diff] [blame] | 2303 | |
| 2304 | MODULE_DEVICE_TABLE(acpi, unisys_device_ids); |
| 2305 | |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 2306 | static __init uint32_t visorutil_spar_detect(void) |
| 2307 | { |
| 2308 | unsigned int eax, ebx, ecx, edx; |
| 2309 | |
Borislav Petkov | 0c9f353 | 2016-03-29 17:41:55 +0200 | [diff] [blame] | 2310 | if (boot_cpu_has(X86_FEATURE_HYPERVISOR)) { |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 2311 | /* check the ID */ |
| 2312 | cpuid(UNISYS_SPAR_LEAF_ID, &eax, &ebx, &ecx, &edx); |
| 2313 | return (ebx == UNISYS_SPAR_ID_EBX) && |
| 2314 | (ecx == UNISYS_SPAR_ID_ECX) && |
| 2315 | (edx == UNISYS_SPAR_ID_EDX); |
| 2316 | } else { |
| 2317 | return 0; |
| 2318 | } |
| 2319 | } |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 2320 | |
| 2321 | static int init_unisys(void) |
| 2322 | { |
| 2323 | int result; |
Alessandro Parini | 35e606d | 2015-06-13 17:40:49 +0200 | [diff] [blame] | 2324 | |
Erik Arfvidson | d5b3f1d | 2015-05-05 18:37:04 -0400 | [diff] [blame] | 2325 | if (!visorutil_spar_detect()) |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 2326 | return -ENODEV; |
| 2327 | |
| 2328 | result = acpi_bus_register_driver(&unisys_acpi_driver); |
| 2329 | if (result) |
| 2330 | return -ENODEV; |
| 2331 | |
| 2332 | pr_info("Unisys Visorchipset Driver Loaded.\n"); |
| 2333 | return 0; |
| 2334 | }; |
| 2335 | |
| 2336 | static void exit_unisys(void) |
| 2337 | { |
| 2338 | acpi_bus_unregister_driver(&unisys_acpi_driver); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2339 | } |
| 2340 | |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2341 | module_param_named(major, visorchipset_major, int, S_IRUGO); |
Jes Sorensen | b615d62 | 2015-05-05 18:35:38 -0400 | [diff] [blame] | 2342 | MODULE_PARM_DESC(visorchipset_major, |
| 2343 | "major device number to use for the device node"); |
David Kershner | 4da3336 | 2015-05-05 18:36:39 -0400 | [diff] [blame] | 2344 | module_param_named(visorbusregwait, visorchipset_visorbusregwait, int, S_IRUGO); |
David Binder | 80bee26 | 2016-05-06 13:11:16 -0400 | [diff] [blame] | 2345 | MODULE_PARM_DESC(visorchipset_visorbusregwait, |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2346 | "1 to have the module wait for the visor bus to register"); |
Jes Sorensen | b615d62 | 2015-05-05 18:35:38 -0400 | [diff] [blame] | 2347 | |
Prarit Bhargava | 55c67dc | 2015-05-05 18:37:02 -0400 | [diff] [blame] | 2348 | module_init(init_unisys); |
| 2349 | module_exit(exit_unisys); |
Ken Cox | 12e364b | 2014-03-04 07:58:07 -0600 | [diff] [blame] | 2350 | |
| 2351 | MODULE_AUTHOR("Unisys"); |
| 2352 | MODULE_LICENSE("GPL"); |
| 2353 | MODULE_DESCRIPTION("Supervisor chipset driver for service partition: ver " |
| 2354 | VERSION); |
| 2355 | MODULE_VERSION(VERSION); |