css.c (863fc8492734822b95671780db803cd9a4b7d923) css.c (14556b33f2a5d6a3bc75cd33b709452a31555b25)
1/*
2 * driver for channel subsystem
3 *
4 * Copyright IBM Corp. 2002, 2010
5 *
6 * Author(s): Arnd Bergmann (arndb@de.ibm.com)
7 * Cornelia Huck (cornelia.huck@de.ibm.com)
8 */

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219 chp_new(ssd->chpid[i]);
220 }
221}
222
223void css_update_ssd_info(struct subchannel *sch)
224{
225 int ret;
226
1/*
2 * driver for channel subsystem
3 *
4 * Copyright IBM Corp. 2002, 2010
5 *
6 * Author(s): Arnd Bergmann (arndb@de.ibm.com)
7 * Cornelia Huck (cornelia.huck@de.ibm.com)
8 */

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219 chp_new(ssd->chpid[i]);
220 }
221}
222
223void css_update_ssd_info(struct subchannel *sch)
224{
225 int ret;
226
227 if (cio_is_console(sch->schid)) {
228 /* Console is initialized too early for functions requiring
229 * memory allocation. */
227 ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);
228 if (ret)
230 ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);
229 ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);
231 } else {
232 ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);
233 if (ret)
234 ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);
235 ssd_register_chpids(&sch->ssd_info);
236 }
230
231 ssd_register_chpids(&sch->ssd_info);
237}
238
239static ssize_t type_show(struct device *dev, struct device_attribute *attr,
240 char *buf)
241{
242 struct subchannel *sch = to_subchannel(dev);
243
244 return sprintf(buf, "%01x\n", sch->st);

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266 .attrs = subch_attrs,
267};
268
269static const struct attribute_group *default_subch_attr_groups[] = {
270 &subch_attr_group,
271 NULL,
272};
273
232}
233
234static ssize_t type_show(struct device *dev, struct device_attribute *attr,
235 char *buf)
236{
237 struct subchannel *sch = to_subchannel(dev);
238
239 return sprintf(buf, "%01x\n", sch->st);

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261 .attrs = subch_attrs,
262};
263
264static const struct attribute_group *default_subch_attr_groups[] = {
265 &subch_attr_group,
266 NULL,
267};
268
274static int css_register_subchannel(struct subchannel *sch)
269int css_register_subchannel(struct subchannel *sch)
275{
276 int ret;
277
278 /* Initialize the subchannel structure */
279 sch->dev.parent = &channel_subsystems[0]->device;
280 sch->dev.bus = &css_bus_type;
281 sch->dev.groups = default_subch_attr_groups;
282 /*

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309 return ret;
310}
311
312int css_probe_device(struct subchannel_id schid)
313{
314 int ret;
315 struct subchannel *sch;
316
270{
271 int ret;
272
273 /* Initialize the subchannel structure */
274 sch->dev.parent = &channel_subsystems[0]->device;
275 sch->dev.bus = &css_bus_type;
276 sch->dev.groups = default_subch_attr_groups;
277 /*

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304 return ret;
305}
306
307int css_probe_device(struct subchannel_id schid)
308{
309 int ret;
310 struct subchannel *sch;
311
317 if (cio_is_console(schid))
318 sch = cio_get_console_subchannel();
319 else {
320 sch = css_alloc_subchannel(schid);
321 if (IS_ERR(sch))
322 return PTR_ERR(sch);
323 }
312 sch = css_alloc_subchannel(schid);
313 if (IS_ERR(sch))
314 return PTR_ERR(sch);
315
324 ret = css_register_subchannel(sch);
325 if (ret)
326 put_device(&sch->dev);
327
328 return ret;
329}
330
331static int

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859
860}
861static struct notifier_block css_power_notifier = {
862 .notifier_call = css_power_event,
863};
864
865/*
866 * Now that the driver core is running, we can setup our channel subsystem.
316 ret = css_register_subchannel(sch);
317 if (ret)
318 put_device(&sch->dev);
319
320 return ret;
321}
322
323static int

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851
852}
853static struct notifier_block css_power_notifier = {
854 .notifier_call = css_power_event,
855};
856
857/*
858 * Now that the driver core is running, we can setup our channel subsystem.
867 * The struct subchannel's are created during probing (except for the
868 * static console subchannel).
859 * The struct subchannel's are created during probing.
869 */
870static int __init css_bus_init(void)
871{
872 int ret, i;
873
874 ret = chsc_init();
875 if (ret)
876 return ret;

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1039
1040
1041/*
1042 * Wait for the initialization of devices to finish, to make sure we are
1043 * done with our setup if the search for the root device starts.
1044 */
1045static int __init channel_subsystem_init_sync(void)
1046{
860 */
861static int __init css_bus_init(void)
862{
863 int ret, i;
864
865 ret = chsc_init();
866 if (ret)
867 return ret;

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1030
1031
1032/*
1033 * Wait for the initialization of devices to finish, to make sure we are
1034 * done with our setup if the search for the root device starts.
1035 */
1036static int __init channel_subsystem_init_sync(void)
1037{
1038 /* Register subchannels which are already in use. */
1039 cio_register_early_subchannels();
1047 /* Start initial subchannel evaluation. */
1048 css_schedule_eval_all();
1049 css_complete_work();
1050 return 0;
1051}
1052subsys_initcall_sync(channel_subsystem_init_sync);
1053
1054void channel_subsystem_reinit(void)

--- 213 unchanged lines hidden --- 		1040 /* Start initial subchannel evaluation. */
1041 css_schedule_eval_all();
1042 css_complete_work();
1043 return 0;
1044}
1045subsys_initcall_sync(channel_subsystem_init_sync);
1046
1047void channel_subsystem_reinit(void)

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