Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 1 | /* |
| 2 | * EDAC PCI component |
| 3 | * |
| 4 | * Author: Dave Jiang <djiang@mvista.com> |
| 5 | * |
| 6 | * 2007 (c) MontaVista Software, Inc. This file is licensed under |
| 7 | * the terms of the GNU General Public License version 2. This program |
| 8 | * is licensed "as is" without any warranty of any kind, whether express |
| 9 | * or implied. |
| 10 | * |
| 11 | */ |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/smp.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/sysctl.h> |
| 17 | #include <linux/highmem.h> |
| 18 | #include <linux/timer.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <linux/spinlock.h> |
| 21 | #include <linux/list.h> |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 22 | #include <linux/ctype.h> |
| 23 | #include <linux/workqueue.h> |
| 24 | #include <asm/uaccess.h> |
| 25 | #include <asm/page.h> |
| 26 | |
| 27 | #include "edac_core.h" |
| 28 | #include "edac_module.h" |
| 29 | |
| 30 | static DEFINE_MUTEX(edac_pci_ctls_mutex); |
Robert P. J. Day | ff6ac2a | 2008-04-29 01:03:17 -0700 | [diff] [blame] | 31 | static LIST_HEAD(edac_pci_list); |
Harry Ciao | 8641a38 | 2009-04-02 16:58:47 -0700 | [diff] [blame] | 32 | static atomic_t pci_indexes = ATOMIC_INIT(0); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 33 | |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 34 | /* |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 35 | * edac_pci_alloc_ctl_info |
| 36 | * |
| 37 | * The alloc() function for the 'edac_pci' control info |
| 38 | * structure. The chip driver will allocate one of these for each |
| 39 | * edac_pci it is going to control/register with the EDAC CORE. |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 40 | */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 41 | struct edac_pci_ctl_info *edac_pci_alloc_ctl_info(unsigned int sz_pvt, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 42 | const char *edac_pci_name) |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 43 | { |
| 44 | struct edac_pci_ctl_info *pci; |
Mauro Carvalho Chehab | 93e4fe6 | 2012-04-16 10:18:12 -0300 | [diff] [blame] | 45 | void *p = NULL, *pvt; |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 46 | unsigned int size; |
| 47 | |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 48 | edac_dbg(1, "\n"); |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 49 | |
Mauro Carvalho Chehab | 93e4fe6 | 2012-04-16 10:18:12 -0300 | [diff] [blame] | 50 | pci = edac_align_ptr(&p, sizeof(*pci), 1); |
| 51 | pvt = edac_align_ptr(&p, 1, sz_pvt); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 52 | size = ((unsigned long)pvt) + sz_pvt; |
| 53 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 54 | /* Alloc the needed control struct memory */ |
| 55 | pci = kzalloc(size, GFP_KERNEL); |
| 56 | if (pci == NULL) |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 57 | return NULL; |
| 58 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 59 | /* Now much private space */ |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 60 | pvt = sz_pvt ? ((char *)pci) + ((unsigned long)pvt) : NULL; |
| 61 | |
| 62 | pci->pvt_info = pvt; |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 63 | pci->op_state = OP_ALLOC; |
| 64 | |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 65 | snprintf(pci->name, strlen(edac_pci_name) + 1, "%s", edac_pci_name); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 66 | |
| 67 | return pci; |
| 68 | } |
| 69 | EXPORT_SYMBOL_GPL(edac_pci_alloc_ctl_info); |
| 70 | |
| 71 | /* |
| 72 | * edac_pci_free_ctl_info() |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 73 | * |
| 74 | * Last action on the pci control structure. |
| 75 | * |
Joe Perches | 6f042b5 | 2008-02-03 17:12:34 +0200 | [diff] [blame] | 76 | * call the remove sysfs information, which will unregister |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 77 | * this control struct's kobj. When that kobj's ref count |
| 78 | * goes to zero, its release function will be call and then |
| 79 | * kfree() the memory. |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 80 | */ |
| 81 | void edac_pci_free_ctl_info(struct edac_pci_ctl_info *pci) |
| 82 | { |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 83 | edac_dbg(1, "\n"); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 84 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 85 | edac_pci_remove_sysfs(pci); |
| 86 | } |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 87 | EXPORT_SYMBOL_GPL(edac_pci_free_ctl_info); |
| 88 | |
| 89 | /* |
| 90 | * find_edac_pci_by_dev() |
| 91 | * scans the edac_pci list for a specific 'struct device *' |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 92 | * |
| 93 | * return NULL if not found, or return control struct pointer |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 94 | */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 95 | static struct edac_pci_ctl_info *find_edac_pci_by_dev(struct device *dev) |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 96 | { |
| 97 | struct edac_pci_ctl_info *pci; |
| 98 | struct list_head *item; |
| 99 | |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 100 | edac_dbg(1, "\n"); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 101 | |
| 102 | list_for_each(item, &edac_pci_list) { |
| 103 | pci = list_entry(item, struct edac_pci_ctl_info, link); |
| 104 | |
| 105 | if (pci->dev == dev) |
| 106 | return pci; |
| 107 | } |
| 108 | |
| 109 | return NULL; |
| 110 | } |
| 111 | |
| 112 | /* |
| 113 | * add_edac_pci_to_global_list |
| 114 | * Before calling this function, caller must assign a unique value to |
| 115 | * edac_dev->pci_idx. |
| 116 | * Return: |
| 117 | * 0 on success |
| 118 | * 1 on failure |
| 119 | */ |
| 120 | static int add_edac_pci_to_global_list(struct edac_pci_ctl_info *pci) |
| 121 | { |
| 122 | struct list_head *item, *insert_before; |
| 123 | struct edac_pci_ctl_info *rover; |
| 124 | |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 125 | edac_dbg(1, "\n"); |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 126 | |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 127 | insert_before = &edac_pci_list; |
| 128 | |
| 129 | /* Determine if already on the list */ |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 130 | rover = find_edac_pci_by_dev(pci->dev); |
| 131 | if (unlikely(rover != NULL)) |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 132 | goto fail0; |
| 133 | |
| 134 | /* Insert in ascending order by 'pci_idx', so find position */ |
| 135 | list_for_each(item, &edac_pci_list) { |
| 136 | rover = list_entry(item, struct edac_pci_ctl_info, link); |
| 137 | |
| 138 | if (rover->pci_idx >= pci->pci_idx) { |
| 139 | if (unlikely(rover->pci_idx == pci->pci_idx)) |
| 140 | goto fail1; |
| 141 | |
| 142 | insert_before = item; |
| 143 | break; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | list_add_tail_rcu(&pci->link, insert_before); |
| 148 | return 0; |
| 149 | |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 150 | fail0: |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 151 | edac_printk(KERN_WARNING, EDAC_PCI, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 152 | "%s (%s) %s %s already assigned %d\n", |
Kay Sievers | 281efb1 | 2009-01-06 14:42:57 -0800 | [diff] [blame] | 153 | dev_name(rover->dev), edac_dev_name(rover), |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 154 | rover->mod_name, rover->ctl_name, rover->pci_idx); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 155 | return 1; |
| 156 | |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 157 | fail1: |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 158 | edac_printk(KERN_WARNING, EDAC_PCI, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 159 | "but in low-level driver: attempt to assign\n" |
| 160 | "\tduplicate pci_idx %d in %s()\n", rover->pci_idx, |
| 161 | __func__); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 162 | return 1; |
| 163 | } |
| 164 | |
| 165 | /* |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 166 | * del_edac_pci_from_global_list |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 167 | * |
| 168 | * remove the PCI control struct from the global list |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 169 | */ |
| 170 | static void del_edac_pci_from_global_list(struct edac_pci_ctl_info *pci) |
| 171 | { |
| 172 | list_del_rcu(&pci->link); |
Lai Jiangshan | e2e7709 | 2011-05-26 16:25:58 -0700 | [diff] [blame] | 173 | |
| 174 | /* these are for safe removal of devices from global list while |
| 175 | * NMI handlers may be traversing list |
| 176 | */ |
| 177 | synchronize_rcu(); |
| 178 | INIT_LIST_HEAD(&pci->link); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 179 | } |
| 180 | |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 181 | /* |
| 182 | * edac_pci_workq_function() |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 183 | * |
| 184 | * periodic function that performs the operation |
| 185 | * scheduled by a workq request, for a given PCI control struct |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 186 | */ |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 187 | static void edac_pci_workq_function(struct work_struct *work_req) |
| 188 | { |
Jean Delvare | fbeb438 | 2009-04-13 14:40:21 -0700 | [diff] [blame] | 189 | struct delayed_work *d_work = to_delayed_work(work_req); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 190 | struct edac_pci_ctl_info *pci = to_edac_pci_ctl_work(d_work); |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 191 | int msec; |
| 192 | unsigned long delay; |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 193 | |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 194 | edac_dbg(3, "checking\n"); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 195 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 196 | mutex_lock(&edac_pci_ctls_mutex); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 197 | |
Borislav Petkov | 06e912d | 2016-02-02 11:36:11 +0100 | [diff] [blame] | 198 | if (pci->op_state != OP_RUNNING_POLL) { |
| 199 | mutex_unlock(&edac_pci_ctls_mutex); |
| 200 | return; |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 201 | } |
| 202 | |
Borislav Petkov | 06e912d | 2016-02-02 11:36:11 +0100 | [diff] [blame] | 203 | if (edac_pci_get_check_errors()) |
| 204 | pci->edac_check(pci); |
| 205 | |
| 206 | /* if we are on a one second period, then use round */ |
| 207 | msec = edac_pci_get_poll_msec(); |
| 208 | if (msec == 1000) |
| 209 | delay = round_jiffies_relative(msecs_to_jiffies(msec)); |
| 210 | else |
| 211 | delay = msecs_to_jiffies(msec); |
| 212 | |
| 213 | edac_queue_work(&pci->work, delay); |
| 214 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 215 | mutex_unlock(&edac_pci_ctls_mutex); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | /* |
Harry Ciao | 8641a38 | 2009-04-02 16:58:47 -0700 | [diff] [blame] | 219 | * edac_pci_alloc_index: Allocate a unique PCI index number |
| 220 | * |
| 221 | * Return: |
| 222 | * allocated index number |
| 223 | * |
| 224 | */ |
| 225 | int edac_pci_alloc_index(void) |
| 226 | { |
| 227 | return atomic_inc_return(&pci_indexes) - 1; |
| 228 | } |
| 229 | EXPORT_SYMBOL_GPL(edac_pci_alloc_index); |
| 230 | |
| 231 | /* |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 232 | * edac_pci_add_device: Insert the 'edac_dev' structure into the |
| 233 | * edac_pci global list and create sysfs entries associated with |
| 234 | * edac_pci structure. |
| 235 | * @pci: pointer to the edac_device structure to be added to the list |
| 236 | * @edac_idx: A unique numeric identifier to be assigned to the |
| 237 | * 'edac_pci' structure. |
| 238 | * |
| 239 | * Return: |
| 240 | * 0 Success |
| 241 | * !0 Failure |
| 242 | */ |
| 243 | int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx) |
| 244 | { |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 245 | edac_dbg(0, "\n"); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 246 | |
| 247 | pci->pci_idx = edac_idx; |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 248 | pci->start_time = jiffies; |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 249 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 250 | mutex_lock(&edac_pci_ctls_mutex); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 251 | |
| 252 | if (add_edac_pci_to_global_list(pci)) |
| 253 | goto fail0; |
| 254 | |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 255 | if (edac_pci_create_sysfs(pci)) { |
| 256 | edac_pci_printk(pci, KERN_WARNING, |
| 257 | "failed to create sysfs pci\n"); |
| 258 | goto fail1; |
| 259 | } |
| 260 | |
Borislav Petkov | 0966760 | 2016-02-02 10:59:53 +0100 | [diff] [blame] | 261 | if (pci->edac_check) { |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 262 | pci->op_state = OP_RUNNING_POLL; |
| 263 | |
Borislav Petkov | 626a7a4 | 2016-02-02 11:06:41 +0100 | [diff] [blame] | 264 | INIT_DELAYED_WORK(&pci->work, edac_pci_workq_function); |
| 265 | edac_queue_work(&pci->work, msecs_to_jiffies(edac_pci_get_poll_msec())); |
| 266 | |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 267 | } else { |
| 268 | pci->op_state = OP_RUNNING_INTERRUPT; |
| 269 | } |
| 270 | |
| 271 | edac_pci_printk(pci, KERN_INFO, |
Robert Richter | 7270a60 | 2013-10-10 18:22:36 +0200 | [diff] [blame] | 272 | "Giving out device to module %s controller %s: DEV %s (%s)\n", |
| 273 | pci->mod_name, pci->ctl_name, pci->dev_name, |
| 274 | edac_op_state_to_string(pci->op_state)); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 275 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 276 | mutex_unlock(&edac_pci_ctls_mutex); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 277 | return 0; |
| 278 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 279 | /* error unwind stack */ |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 280 | fail1: |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 281 | del_edac_pci_from_global_list(pci); |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 282 | fail0: |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 283 | mutex_unlock(&edac_pci_ctls_mutex); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 284 | return 1; |
| 285 | } |
| 286 | EXPORT_SYMBOL_GPL(edac_pci_add_device); |
| 287 | |
| 288 | /* |
| 289 | * edac_pci_del_device() |
| 290 | * Remove sysfs entries for specified edac_pci structure and |
| 291 | * then remove edac_pci structure from global list |
| 292 | * |
| 293 | * @dev: |
| 294 | * Pointer to 'struct device' representing edac_pci structure |
| 295 | * to remove |
| 296 | * |
| 297 | * Return: |
| 298 | * Pointer to removed edac_pci structure, |
| 299 | * or NULL if device not found |
| 300 | */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 301 | struct edac_pci_ctl_info *edac_pci_del_device(struct device *dev) |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 302 | { |
| 303 | struct edac_pci_ctl_info *pci; |
| 304 | |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 305 | edac_dbg(0, "\n"); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 306 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 307 | mutex_lock(&edac_pci_ctls_mutex); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 308 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 309 | /* ensure the control struct is on the global list |
| 310 | * if not, then leave |
| 311 | */ |
| 312 | pci = find_edac_pci_by_dev(dev); |
| 313 | if (pci == NULL) { |
| 314 | mutex_unlock(&edac_pci_ctls_mutex); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 315 | return NULL; |
| 316 | } |
| 317 | |
| 318 | pci->op_state = OP_OFFLINE; |
| 319 | |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 320 | del_edac_pci_from_global_list(pci); |
| 321 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 322 | mutex_unlock(&edac_pci_ctls_mutex); |
| 323 | |
Borislav Petkov | 0966760 | 2016-02-02 10:59:53 +0100 | [diff] [blame] | 324 | if (pci->edac_check) |
Borislav Petkov | 626a7a4 | 2016-02-02 11:06:41 +0100 | [diff] [blame] | 325 | edac_stop_work(&pci->work); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 326 | |
| 327 | edac_printk(KERN_INFO, EDAC_PCI, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 328 | "Removed device %d for %s %s: DEV %s\n", |
Stephen Rothwell | 17aa7e0 | 2008-05-05 13:54:19 +1000 | [diff] [blame] | 329 | pci->pci_idx, pci->mod_name, pci->ctl_name, edac_dev_name(pci)); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 330 | |
| 331 | return pci; |
| 332 | } |
| 333 | EXPORT_SYMBOL_GPL(edac_pci_del_device); |
| 334 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 335 | /* |
| 336 | * edac_pci_generic_check |
| 337 | * |
| 338 | * a Generic parity check API |
| 339 | */ |
Adrian Bunk | 1a45027 | 2008-04-29 01:03:18 -0700 | [diff] [blame] | 340 | static void edac_pci_generic_check(struct edac_pci_ctl_info *pci) |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 341 | { |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 342 | edac_dbg(4, "\n"); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 343 | edac_pci_do_parity_check(); |
| 344 | } |
| 345 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 346 | /* free running instance index counter */ |
Douglas Thompson | f044091 | 2007-07-19 01:50:19 -0700 | [diff] [blame] | 347 | static int edac_pci_idx; |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 348 | #define EDAC_PCI_GENCTL_NAME "EDAC PCI controller" |
| 349 | |
| 350 | struct edac_pci_gen_data { |
| 351 | int edac_idx; |
| 352 | }; |
| 353 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 354 | /* |
| 355 | * edac_pci_create_generic_ctl |
| 356 | * |
| 357 | * A generic constructor for a PCI parity polling device |
| 358 | * Some systems have more than one domain of PCI busses. |
| 359 | * For systems with one domain, then this API will |
| 360 | * provide for a generic poller. |
| 361 | * |
| 362 | * This routine calls the edac_pci_alloc_ctl_info() for |
| 363 | * the generic device, with default values |
| 364 | */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 365 | struct edac_pci_ctl_info *edac_pci_create_generic_ctl(struct device *dev, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 366 | const char *mod_name) |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 367 | { |
| 368 | struct edac_pci_ctl_info *pci; |
| 369 | struct edac_pci_gen_data *pdata; |
| 370 | |
| 371 | pci = edac_pci_alloc_ctl_info(sizeof(*pdata), EDAC_PCI_GENCTL_NAME); |
| 372 | if (!pci) |
| 373 | return NULL; |
| 374 | |
| 375 | pdata = pci->pvt_info; |
| 376 | pci->dev = dev; |
| 377 | dev_set_drvdata(pci->dev, pci); |
| 378 | pci->dev_name = pci_name(to_pci_dev(dev)); |
| 379 | |
| 380 | pci->mod_name = mod_name; |
| 381 | pci->ctl_name = EDAC_PCI_GENCTL_NAME; |
Borislav Petkov | 876bb33 | 2012-09-10 15:52:27 +0200 | [diff] [blame] | 382 | if (edac_op_state == EDAC_OPSTATE_POLL) |
| 383 | pci->edac_check = edac_pci_generic_check; |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 384 | |
| 385 | pdata->edac_idx = edac_pci_idx++; |
| 386 | |
| 387 | if (edac_pci_add_device(pci, pdata->edac_idx) > 0) { |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 388 | edac_dbg(3, "failed edac_pci_add_device()\n"); |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 389 | edac_pci_free_ctl_info(pci); |
| 390 | return NULL; |
| 391 | } |
| 392 | |
| 393 | return pci; |
| 394 | } |
| 395 | EXPORT_SYMBOL_GPL(edac_pci_create_generic_ctl); |
| 396 | |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 397 | /* |
| 398 | * edac_pci_release_generic_ctl |
| 399 | * |
| 400 | * The release function of a generic EDAC PCI polling device |
| 401 | */ |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 402 | void edac_pci_release_generic_ctl(struct edac_pci_ctl_info *pci) |
| 403 | { |
Joe Perches | 956b9ba1 | 2012-04-29 17:08:39 -0300 | [diff] [blame] | 404 | edac_dbg(0, "pci mod=%s\n", pci->mod_name); |
Doug Thompson | d4c1465 | 2007-07-26 10:41:15 -0700 | [diff] [blame] | 405 | |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 406 | edac_pci_del_device(pci->dev); |
| 407 | edac_pci_free_ctl_info(pci); |
| 408 | } |
Dave Jiang | 91b9904 | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 409 | EXPORT_SYMBOL_GPL(edac_pci_release_generic_ctl); |