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-rw-r--r--drivers/s390/cio/Makefile1
-rw-r--r--drivers/s390/cio/chp.c2
-rw-r--r--drivers/s390/cio/chsc.c48
-rw-r--r--drivers/s390/cio/chsc.h21
-rw-r--r--drivers/s390/cio/chsc_sch.c820
-rw-r--r--drivers/s390/cio/chsc_sch.h13
-rw-r--r--drivers/s390/cio/cio.c9
-rw-r--r--drivers/s390/cio/cio.h2
-rw-r--r--drivers/s390/cio/css.h3
-rw-r--r--drivers/s390/cio/idset.h2
-rw-r--r--drivers/s390/cio/io_sch.h2
-rw-r--r--drivers/s390/cio/ioasm.h2
-rw-r--r--drivers/s390/cio/qdio.h3
-rw-r--r--drivers/s390/cio/schid.h26
14 files changed, 906 insertions, 48 deletions
diff --git a/drivers/s390/cio/Makefile b/drivers/s390/cio/Makefile
index 6735ebb3c988..91e9e3f3073a 100644
--- a/drivers/s390/cio/Makefile
+++ b/drivers/s390/cio/Makefile
@@ -7,5 +7,6 @@ obj-y += airq.o blacklist.o chsc.o cio.o css.o chp.o idset.o isc.o scsw.o \
7ccw_device-objs += device.o device_fsm.o device_ops.o 7ccw_device-objs += device.o device_fsm.o device_ops.o
8ccw_device-objs += device_id.o device_pgid.o device_status.o 8ccw_device-objs += device_id.o device_pgid.o device_status.o
9obj-y += ccw_device.o cmf.o 9obj-y += ccw_device.o cmf.o
10obj-$(CONFIG_CHSC_SCH) += chsc_sch.o
10obj-$(CONFIG_CCWGROUP) += ccwgroup.o 11obj-$(CONFIG_CCWGROUP) += ccwgroup.o
11obj-$(CONFIG_QDIO) += qdio.o 12obj-$(CONFIG_QDIO) += qdio.o
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index e40eda0ed462..8644c80a2056 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -407,7 +407,7 @@ int chp_new(struct chp_id chpid)
407 chpid.id); 407 chpid.id);
408 408
409 /* Obtain channel path description and fill it in. */ 409 /* Obtain channel path description and fill it in. */
410 ret = chsc_determine_channel_path_description(chpid, &chp->desc); 410 ret = chsc_determine_base_channel_path_desc(chpid, &chp->desc);
411 if (ret) 411 if (ret)
412 goto out_free; 412 goto out_free;
413 if ((chp->desc.flags & 0x80) == 0) { 413 if ((chp->desc.flags & 0x80) == 0) {
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index e23c3806972a..65264a38057d 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -15,6 +15,7 @@
15 15
16#include <asm/cio.h> 16#include <asm/cio.h>
17#include <asm/chpid.h> 17#include <asm/chpid.h>
18#include <asm/chsc.h>
18 19
19#include "../s390mach.h" 20#include "../s390mach.h"
20#include "css.h" 21#include "css.h"
@@ -627,23 +628,33 @@ chsc_secm(struct channel_subsystem *css, int enable)
627 return ret; 628 return ret;
628} 629}
629 630
630int chsc_determine_channel_path_description(struct chp_id chpid, 631int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
631 struct channel_path_desc *desc) 632 int c, int m,
633 struct chsc_response_struct *resp)
632{ 634{
633 int ccode, ret; 635 int ccode, ret;
634 636
635 struct { 637 struct {
636 struct chsc_header request; 638 struct chsc_header request;
637 u32 : 24; 639 u32 : 2;
640 u32 m : 1;
641 u32 c : 1;
642 u32 fmt : 4;
643 u32 cssid : 8;
644 u32 : 4;
645 u32 rfmt : 4;
638 u32 first_chpid : 8; 646 u32 first_chpid : 8;
639 u32 : 24; 647 u32 : 24;
640 u32 last_chpid : 8; 648 u32 last_chpid : 8;
641 u32 zeroes1; 649 u32 zeroes1;
642 struct chsc_header response; 650 struct chsc_header response;
643 u32 zeroes2; 651 u8 data[PAGE_SIZE - 20];
644 struct channel_path_desc desc;
645 } __attribute__ ((packed)) *scpd_area; 652 } __attribute__ ((packed)) *scpd_area;
646 653
654 if ((rfmt == 1) && !css_general_characteristics.fcs)
655 return -EINVAL;
656 if ((rfmt == 2) && !css_general_characteristics.cib)
657 return -EINVAL;
647 scpd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); 658 scpd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
648 if (!scpd_area) 659 if (!scpd_area)
649 return -ENOMEM; 660 return -ENOMEM;
@@ -651,8 +662,13 @@ int chsc_determine_channel_path_description(struct chp_id chpid,
651 scpd_area->request.length = 0x0010; 662 scpd_area->request.length = 0x0010;
652 scpd_area->request.code = 0x0002; 663 scpd_area->request.code = 0x0002;
653 664
665 scpd_area->cssid = chpid.cssid;
654 scpd_area->first_chpid = chpid.id; 666 scpd_area->first_chpid = chpid.id;
655 scpd_area->last_chpid = chpid.id; 667 scpd_area->last_chpid = chpid.id;
668 scpd_area->m = m;
669 scpd_area->c = c;
670 scpd_area->fmt = fmt;
671 scpd_area->rfmt = rfmt;
656 672
657 ccode = chsc(scpd_area); 673 ccode = chsc(scpd_area);
658 if (ccode > 0) { 674 if (ccode > 0) {
@@ -663,8 +679,7 @@ int chsc_determine_channel_path_description(struct chp_id chpid,
663 ret = chsc_error_from_response(scpd_area->response.code); 679 ret = chsc_error_from_response(scpd_area->response.code);
664 if (ret == 0) 680 if (ret == 0)
665 /* Success. */ 681 /* Success. */
666 memcpy(desc, &scpd_area->desc, 682 memcpy(resp, &scpd_area->response, scpd_area->response.length);
667 sizeof(struct channel_path_desc));
668 else 683 else
669 CIO_CRW_EVENT(2, "chsc: scpd failed (rc=%04x)\n", 684 CIO_CRW_EVENT(2, "chsc: scpd failed (rc=%04x)\n",
670 scpd_area->response.code); 685 scpd_area->response.code);
@@ -672,6 +687,25 @@ out:
672 free_page((unsigned long)scpd_area); 687 free_page((unsigned long)scpd_area);
673 return ret; 688 return ret;
674} 689}
690EXPORT_SYMBOL_GPL(chsc_determine_channel_path_desc);
691
692int chsc_determine_base_channel_path_desc(struct chp_id chpid,
693 struct channel_path_desc *desc)
694{
695 struct chsc_response_struct *chsc_resp;
696 int ret;
697
698 chsc_resp = kzalloc(sizeof(*chsc_resp), GFP_KERNEL);
699 if (!chsc_resp)
700 return -ENOMEM;
701 ret = chsc_determine_channel_path_desc(chpid, 0, 0, 0, 0, chsc_resp);
702 if (ret)
703 goto out_free;
704 memcpy(desc, &chsc_resp->data, chsc_resp->length);
705out_free:
706 kfree(chsc_resp);
707 return ret;
708}
675 709
676static void 710static void
677chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv, 711chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv,
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 2a38b5090228..fb6c4d6c45b4 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -4,7 +4,8 @@
4#include <linux/types.h> 4#include <linux/types.h>
5#include <linux/device.h> 5#include <linux/device.h>
6#include <asm/chpid.h> 6#include <asm/chpid.h>
7#include "schid.h" 7#include <asm/chsc.h>
8#include <asm/schid.h>
8 9
9#define CHSC_SDA_OC_MSS 0x2 10#define CHSC_SDA_OC_MSS 0x2
10 11
@@ -37,11 +38,14 @@ struct channel_path_desc {
37struct channel_path; 38struct channel_path;
38 39
39struct css_general_char { 40struct css_general_char {
40 u64 : 41; 41 u64 : 12;
42 u32 dynio : 1; /* bit 12 */
43 u32 : 28;
41 u32 aif : 1; /* bit 41 */ 44 u32 aif : 1; /* bit 41 */
42 u32 : 3; 45 u32 : 3;
43 u32 mcss : 1; /* bit 45 */ 46 u32 mcss : 1; /* bit 45 */
44 u32 : 2; 47 u32 fcs : 1; /* bit 46 */
48 u32 : 1;
45 u32 ext_mb : 1; /* bit 48 */ 49 u32 ext_mb : 1; /* bit 48 */
46 u32 : 7; 50 u32 : 7;
47 u32 aif_tdd : 1; /* bit 56 */ 51 u32 aif_tdd : 1; /* bit 56 */
@@ -49,7 +53,9 @@ struct css_general_char {
49 u32 qebsm : 1; /* bit 58 */ 53 u32 qebsm : 1; /* bit 58 */
50 u32 : 8; 54 u32 : 8;
51 u32 aif_osa : 1; /* bit 67 */ 55 u32 aif_osa : 1; /* bit 67 */
52 u32 : 20; 56 u32 : 14;
57 u32 cib : 1; /* bit 82 */
58 u32 : 5;
53 u32 fcx : 1; /* bit 88 */ 59 u32 fcx : 1; /* bit 88 */
54 u32 : 7; 60 u32 : 7;
55}__attribute__((packed)); 61}__attribute__((packed));
@@ -86,8 +92,11 @@ struct channel_subsystem;
86extern int chsc_secm(struct channel_subsystem *, int); 92extern int chsc_secm(struct channel_subsystem *, int);
87 93
88int chsc_chp_vary(struct chp_id chpid, int on); 94int chsc_chp_vary(struct chp_id chpid, int on);
89int chsc_determine_channel_path_description(struct chp_id chpid, 95int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
90 struct channel_path_desc *desc); 96 int c, int m,
97 struct chsc_response_struct *resp);
98int chsc_determine_base_channel_path_desc(struct chp_id chpid,
99 struct channel_path_desc *desc);
91void chsc_chp_online(struct chp_id chpid); 100void chsc_chp_online(struct chp_id chpid);
92void chsc_chp_offline(struct chp_id chpid); 101void chsc_chp_offline(struct chp_id chpid);
93int chsc_get_channel_measurement_chars(struct channel_path *chp); 102int chsc_get_channel_measurement_chars(struct channel_path *chp);
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
new file mode 100644
index 000000000000..91ca87aa9f97
--- /dev/null
+++ b/drivers/s390/cio/chsc_sch.c
@@ -0,0 +1,820 @@
1/*
2 * Driver for s390 chsc subchannels
3 *
4 * Copyright IBM Corp. 2008
5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
6 *
7 */
8
9#include <linux/device.h>
10#include <linux/module.h>
11#include <linux/uaccess.h>
12#include <linux/miscdevice.h>
13
14#include <asm/cio.h>
15#include <asm/chsc.h>
16#include <asm/isc.h>
17
18#include "cio.h"
19#include "cio_debug.h"
20#include "css.h"
21#include "chsc_sch.h"
22#include "ioasm.h"
23
24static debug_info_t *chsc_debug_msg_id;
25static debug_info_t *chsc_debug_log_id;
26
27#define CHSC_MSG(imp, args...) do { \
28 debug_sprintf_event(chsc_debug_msg_id, imp , ##args); \
29 } while (0)
30
31#define CHSC_LOG(imp, txt) do { \
32 debug_text_event(chsc_debug_log_id, imp , txt); \
33 } while (0)
34
35static void CHSC_LOG_HEX(int level, void *data, int length)
36{
37 while (length > 0) {
38 debug_event(chsc_debug_log_id, level, data, length);
39 length -= chsc_debug_log_id->buf_size;
40 data += chsc_debug_log_id->buf_size;
41 }
42}
43
44MODULE_AUTHOR("IBM Corporation");
45MODULE_DESCRIPTION("driver for s390 chsc subchannels");
46MODULE_LICENSE("GPL");
47
48static void chsc_subchannel_irq(struct subchannel *sch)
49{
50 struct chsc_private *private = sch->private;
51 struct chsc_request *request = private->request;
52 struct irb *irb = (struct irb *)__LC_IRB;
53
54 CHSC_LOG(4, "irb");
55 CHSC_LOG_HEX(4, irb, sizeof(*irb));
56 /* Copy irb to provided request and set done. */
57 if (!request) {
58 CHSC_MSG(0, "Interrupt on sch 0.%x.%04x with no request\n",
59 sch->schid.ssid, sch->schid.sch_no);
60 return;
61 }
62 private->request = NULL;
63 memcpy(&request->irb, irb, sizeof(*irb));
64 stsch(sch->schid, &sch->schib);
65 complete(&request->completion);
66 put_device(&sch->dev);
67}
68
69static int chsc_subchannel_probe(struct subchannel *sch)
70{
71 struct chsc_private *private;
72 int ret;
73
74 CHSC_MSG(6, "Detected chsc subchannel 0.%x.%04x\n",
75 sch->schid.ssid, sch->schid.sch_no);
76 sch->isc = CHSC_SCH_ISC;
77 private = kzalloc(sizeof(*private), GFP_KERNEL);
78 if (!private)
79 return -ENOMEM;
80 ret = cio_enable_subchannel(sch, (u32)(unsigned long)sch);
81 if (ret) {
82 CHSC_MSG(0, "Failed to enable 0.%x.%04x: %d\n",
83 sch->schid.ssid, sch->schid.sch_no, ret);
84 kfree(private);
85 } else {
86 sch->private = private;
87 if (sch->dev.uevent_suppress) {
88 sch->dev.uevent_suppress = 0;
89 kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
90 }
91 }
92 return ret;
93}
94
95static int chsc_subchannel_remove(struct subchannel *sch)
96{
97 struct chsc_private *private;
98
99 cio_disable_subchannel(sch);
100 private = sch->private;
101 sch->private = NULL;
102 if (private->request) {
103 complete(&private->request->completion);
104 put_device(&sch->dev);
105 }
106 kfree(private);
107 return 0;
108}
109
110static void chsc_subchannel_shutdown(struct subchannel *sch)
111{
112 cio_disable_subchannel(sch);
113}
114
115static struct css_device_id chsc_subchannel_ids[] = {
116 { .match_flags = 0x1, .type =SUBCHANNEL_TYPE_CHSC, },
117 { /* end of list */ },
118};
119MODULE_DEVICE_TABLE(css, chsc_subchannel_ids);
120
121static struct css_driver chsc_subchannel_driver = {
122 .owner = THIS_MODULE,
123 .subchannel_type = chsc_subchannel_ids,
124 .irq = chsc_subchannel_irq,
125 .probe = chsc_subchannel_probe,
126 .remove = chsc_subchannel_remove,
127 .shutdown = chsc_subchannel_shutdown,
128 .name = "chsc_subchannel",
129};
130
131static int __init chsc_init_dbfs(void)
132{
133 chsc_debug_msg_id = debug_register("chsc_msg", 16, 1,
134 16 * sizeof(long));
135 if (!chsc_debug_msg_id)
136 goto out;
137 debug_register_view(chsc_debug_msg_id, &debug_sprintf_view);
138 debug_set_level(chsc_debug_msg_id, 2);
139 chsc_debug_log_id = debug_register("chsc_log", 16, 1, 16);
140 if (!chsc_debug_log_id)
141 goto out;
142 debug_register_view(chsc_debug_log_id, &debug_hex_ascii_view);
143 debug_set_level(chsc_debug_log_id, 2);
144 return 0;
145out:
146 if (chsc_debug_msg_id)
147 debug_unregister(chsc_debug_msg_id);
148 return -ENOMEM;
149}
150
151static void chsc_remove_dbfs(void)
152{
153 debug_unregister(chsc_debug_log_id);
154 debug_unregister(chsc_debug_msg_id);
155}
156
157static int __init chsc_init_sch_driver(void)
158{
159 return css_driver_register(&chsc_subchannel_driver);
160}
161
162static void chsc_cleanup_sch_driver(void)
163{
164 css_driver_unregister(&chsc_subchannel_driver);
165}
166
167static DEFINE_SPINLOCK(chsc_lock);
168
169static int chsc_subchannel_match_next_free(struct device *dev, void *data)
170{
171 struct subchannel *sch = to_subchannel(dev);
172
173 return sch->schib.pmcw.ena && !scsw_fctl(&sch->schib.scsw);
174}
175
176static struct subchannel *chsc_get_next_subchannel(struct subchannel *sch)
177{
178 struct device *dev;
179
180 dev = driver_find_device(&chsc_subchannel_driver.drv,
181 sch ? &sch->dev : NULL, NULL,
182 chsc_subchannel_match_next_free);
183 return dev ? to_subchannel(dev) : NULL;
184}
185
186/**
187 * chsc_async() - try to start a chsc request asynchronously
188 * @chsc_area: request to be started
189 * @request: request structure to associate
190 *
191 * Tries to start a chsc request on one of the existing chsc subchannels.
192 * Returns:
193 * %0 if the request was performed synchronously
194 * %-EINPROGRESS if the request was successfully started
195 * %-EBUSY if all chsc subchannels are busy
196 * %-ENODEV if no chsc subchannels are available
197 * Context:
198 * interrupts disabled, chsc_lock held
199 */
200static int chsc_async(struct chsc_async_area *chsc_area,
201 struct chsc_request *request)
202{
203 int cc;
204 struct chsc_private *private;
205 struct subchannel *sch = NULL;
206 int ret = -ENODEV;
207 char dbf[10];
208
209 chsc_area->header.key = PAGE_DEFAULT_KEY;
210 while ((sch = chsc_get_next_subchannel(sch))) {
211 spin_lock(sch->lock);
212 private = sch->private;
213 if (private->request) {
214 spin_unlock(sch->lock);
215 ret = -EBUSY;
216 continue;
217 }
218 chsc_area->header.sid = sch->schid;
219 CHSC_LOG(2, "schid");
220 CHSC_LOG_HEX(2, &sch->schid, sizeof(sch->schid));
221 cc = chsc(chsc_area);
222 sprintf(dbf, "cc:%d", cc);
223 CHSC_LOG(2, dbf);
224 switch (cc) {
225 case 0:
226 ret = 0;
227 break;
228 case 1:
229 sch->schib.scsw.cmd.fctl |= SCSW_FCTL_START_FUNC;
230 ret = -EINPROGRESS;
231 private->request = request;
232 break;
233 case 2:
234 ret = -EBUSY;
235 break;
236 default:
237 ret = -ENODEV;
238 }
239 spin_unlock(sch->lock);
240 CHSC_MSG(2, "chsc on 0.%x.%04x returned cc=%d\n",
241 sch->schid.ssid, sch->schid.sch_no, cc);
242 if (ret == -EINPROGRESS)
243 return -EINPROGRESS;
244 put_device(&sch->dev);
245 if (ret == 0)
246 return 0;
247 }
248 return ret;
249}
250
251static void chsc_log_command(struct chsc_async_area *chsc_area)
252{
253 char dbf[10];
254
255 sprintf(dbf, "CHSC:%x", chsc_area->header.code);
256 CHSC_LOG(0, dbf);
257 CHSC_LOG_HEX(0, chsc_area, 32);
258}
259
260static int chsc_examine_irb(struct chsc_request *request)
261{
262 int backed_up;
263
264 if (!scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND)
265 return -EIO;
266 backed_up = scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHAIN_CHECK;
267 request->irb.scsw.cmd.cstat &= ~SCHN_STAT_CHAIN_CHECK;
268 if (scsw_cstat(&request->irb.scsw) == 0)
269 return 0;
270 if (!backed_up)
271 return 0;
272 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_PROG_CHECK)
273 return -EIO;
274 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_PROT_CHECK)
275 return -EPERM;
276 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHN_DATA_CHK)
277 return -EAGAIN;
278 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHN_CTRL_CHK)
279 return -EAGAIN;
280 return -EIO;
281}
282
283static int chsc_ioctl_start(void __user *user_area)
284{
285 struct chsc_request *request;
286 struct chsc_async_area *chsc_area;
287 int ret;
288 char dbf[10];
289
290 if (!css_general_characteristics.dynio)
291 /* It makes no sense to try. */
292 return -EOPNOTSUPP;
293 chsc_area = (void *)get_zeroed_page(GFP_DMA | GFP_KERNEL);
294 if (!chsc_area)
295 return -ENOMEM;
296 request = kzalloc(sizeof(*request), GFP_KERNEL);
297 if (!request) {
298 ret = -ENOMEM;
299 goto out_free;
300 }
301 init_completion(&request->completion);
302 if (copy_from_user(chsc_area, user_area, PAGE_SIZE)) {
303 ret = -EFAULT;
304 goto out_free;
305 }
306 chsc_log_command(chsc_area);
307 spin_lock_irq(&chsc_lock);
308 ret = chsc_async(chsc_area, request);
309 spin_unlock_irq(&chsc_lock);
310 if (ret == -EINPROGRESS) {
311 wait_for_completion(&request->completion);
312 ret = chsc_examine_irb(request);
313 }
314 /* copy area back to user */
315 if (!ret)
316 if (copy_to_user(user_area, chsc_area, PAGE_SIZE))
317 ret = -EFAULT;
318out_free:
319 sprintf(dbf, "ret:%d", ret);
320 CHSC_LOG(0, dbf);
321 kfree(request);
322 free_page((unsigned long)chsc_area);
323 return ret;
324}
325
326static int chsc_ioctl_info_channel_path(void __user *user_cd)
327{
328 struct chsc_chp_cd *cd;
329 int ret, ccode;
330 struct {
331 struct chsc_header request;
332 u32 : 2;
333 u32 m : 1;
334 u32 : 1;
335 u32 fmt1 : 4;
336 u32 cssid : 8;
337 u32 : 8;
338 u32 first_chpid : 8;
339 u32 : 24;
340 u32 last_chpid : 8;
341 u32 : 32;
342 struct chsc_header response;
343 u8 data[PAGE_SIZE - 20];
344 } __attribute__ ((packed)) *scpcd_area;
345
346 scpcd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
347 if (!scpcd_area)
348 return -ENOMEM;
349 cd = kzalloc(sizeof(*cd), GFP_KERNEL);
350 if (!cd) {
351 ret = -ENOMEM;
352 goto out_free;
353 }
354 if (copy_from_user(cd, user_cd, sizeof(*cd))) {
355 ret = -EFAULT;
356 goto out_free;
357 }
358 scpcd_area->request.length = 0x0010;
359 scpcd_area->request.code = 0x0028;
360 scpcd_area->m = cd->m;
361 scpcd_area->fmt1 = cd->fmt;
362 scpcd_area->cssid = cd->chpid.cssid;
363 scpcd_area->first_chpid = cd->chpid.id;
364 scpcd_area->last_chpid = cd->chpid.id;
365
366 ccode = chsc(scpcd_area);
367 if (ccode != 0) {
368 ret = -EIO;
369 goto out_free;
370 }
371 if (scpcd_area->response.code != 0x0001) {
372 ret = -EIO;
373 CHSC_MSG(0, "scpcd: response code=%x\n",
374 scpcd_area->response.code);
375 goto out_free;
376 }
377 memcpy(&cd->cpcb, &scpcd_area->response, scpcd_area->response.length);
378 if (copy_to_user(user_cd, cd, sizeof(*cd)))
379 ret = -EFAULT;
380 else
381 ret = 0;
382out_free:
383 kfree(cd);
384 free_page((unsigned long)scpcd_area);
385 return ret;
386}
387
388static int chsc_ioctl_info_cu(void __user *user_cd)
389{
390 struct chsc_cu_cd *cd;
391 int ret, ccode;
392 struct {
393 struct chsc_header request;
394 u32 : 2;
395 u32 m : 1;
396 u32 : 1;
397 u32 fmt1 : 4;
398 u32 cssid : 8;
399 u32 : 8;
400 u32 first_cun : 8;
401 u32 : 24;
402 u32 last_cun : 8;
403 u32 : 32;
404 struct chsc_header response;
405 u8 data[PAGE_SIZE - 20];
406 } __attribute__ ((packed)) *scucd_area;
407
408 scucd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
409 if (!scucd_area)
410 return -ENOMEM;
411 cd = kzalloc(sizeof(*cd), GFP_KERNEL);
412 if (!cd) {
413 ret = -ENOMEM;
414 goto out_free;
415 }
416 if (copy_from_user(cd, user_cd, sizeof(*cd))) {
417 ret = -EFAULT;
418 goto out_free;
419 }
420 scucd_area->request.length = 0x0010;
421 scucd_area->request.code = 0x0028;
422 scucd_area->m = cd->m;
423 scucd_area->fmt1 = cd->fmt;
424 scucd_area->cssid = cd->cssid;
425 scucd_area->first_cun = cd->cun;
426 scucd_area->last_cun = cd->cun;
427
428 ccode = chsc(scucd_area);
429 if (ccode != 0) {
430 ret = -EIO;
431 goto out_free;
432 }
433 if (scucd_area->response.code != 0x0001) {
434 ret = -EIO;
435 CHSC_MSG(0, "scucd: response code=%x\n",
436 scucd_area->response.code);
437 goto out_free;
438 }
439 memcpy(&cd->cucb, &scucd_area->response, scucd_area->response.length);
440 if (copy_to_user(user_cd, cd, sizeof(*cd)))
441 ret = -EFAULT;
442 else
443 ret = 0;
444out_free:
445 kfree(cd);
446 free_page((unsigned long)scucd_area);
447 return ret;
448}
449
450static int chsc_ioctl_info_sch_cu(void __user *user_cud)
451{
452 struct chsc_sch_cud *cud;
453 int ret, ccode;
454 struct {
455 struct chsc_header request;
456 u32 : 2;
457 u32 m : 1;
458 u32 : 5;
459 u32 fmt1 : 4;
460 u32 : 2;
461 u32 ssid : 2;
462 u32 first_sch : 16;
463 u32 : 8;
464 u32 cssid : 8;
465 u32 last_sch : 16;
466 u32 : 32;
467 struct chsc_header response;
468 u8 data[PAGE_SIZE - 20];
469 } __attribute__ ((packed)) *sscud_area;
470
471 sscud_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
472 if (!sscud_area)
473 return -ENOMEM;
474 cud = kzalloc(sizeof(*cud), GFP_KERNEL);
475 if (!cud) {
476 ret = -ENOMEM;
477 goto out_free;
478 }
479 if (copy_from_user(cud, user_cud, sizeof(*cud))) {
480 ret = -EFAULT;
481 goto out_free;
482 }
483 sscud_area->request.length = 0x0010;
484 sscud_area->request.code = 0x0006;
485 sscud_area->m = cud->schid.m;
486 sscud_area->fmt1 = cud->fmt;
487 sscud_area->ssid = cud->schid.ssid;
488 sscud_area->first_sch = cud->schid.sch_no;
489 sscud_area->cssid = cud->schid.cssid;
490 sscud_area->last_sch = cud->schid.sch_no;
491
492 ccode = chsc(sscud_area);
493 if (ccode != 0) {
494 ret = -EIO;
495 goto out_free;
496 }
497 if (sscud_area->response.code != 0x0001) {
498 ret = -EIO;
499 CHSC_MSG(0, "sscud: response code=%x\n",
500 sscud_area->response.code);
501 goto out_free;
502 }
503 memcpy(&cud->scub, &sscud_area->response, sscud_area->response.length);
504 if (copy_to_user(user_cud, cud, sizeof(*cud)))
505 ret = -EFAULT;
506 else
507 ret = 0;
508out_free:
509 kfree(cud);
510 free_page((unsigned long)sscud_area);
511 return ret;
512}
513
514static int chsc_ioctl_conf_info(void __user *user_ci)
515{
516 struct chsc_conf_info *ci;
517 int ret, ccode;
518 struct {
519 struct chsc_header request;
520 u32 : 2;
521 u32 m : 1;
522 u32 : 1;
523 u32 fmt1 : 4;
524 u32 cssid : 8;
525 u32 : 6;
526 u32 ssid : 2;
527 u32 : 8;
528 u64 : 64;
529 struct chsc_header response;
530 u8 data[PAGE_SIZE - 20];
531 } __attribute__ ((packed)) *sci_area;
532
533 sci_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
534 if (!sci_area)
535 return -ENOMEM;
536 ci = kzalloc(sizeof(*ci), GFP_KERNEL);
537 if (!ci) {
538 ret = -ENOMEM;
539 goto out_free;
540 }
541 if (copy_from_user(ci, user_ci, sizeof(*ci))) {
542 ret = -EFAULT;
543 goto out_free;
544 }
545 sci_area->request.length = 0x0010;
546 sci_area->request.code = 0x0012;
547 sci_area->m = ci->id.m;
548 sci_area->fmt1 = ci->fmt;
549 sci_area->cssid = ci->id.cssid;
550 sci_area->ssid = ci->id.ssid;
551
552 ccode = chsc(sci_area);
553 if (ccode != 0) {
554 ret = -EIO;
555 goto out_free;
556 }
557 if (sci_area->response.code != 0x0001) {
558 ret = -EIO;
559 CHSC_MSG(0, "sci: response code=%x\n",
560 sci_area->response.code);
561 goto out_free;
562 }
563 memcpy(&ci->scid, &sci_area->response, sci_area->response.length);
564 if (copy_to_user(user_ci, ci, sizeof(*ci)))
565 ret = -EFAULT;
566 else
567 ret = 0;
568out_free:
569 kfree(ci);
570 free_page((unsigned long)sci_area);
571 return ret;
572}
573
574static int chsc_ioctl_conf_comp_list(void __user *user_ccl)
575{
576 struct chsc_comp_list *ccl;
577 int ret, ccode;
578 struct {
579 struct chsc_header request;
580 u32 ctype : 8;
581 u32 : 4;
582 u32 fmt : 4;
583 u32 : 16;
584 u64 : 64;
585 u32 list_parm[2];
586 u64 : 64;
587 struct chsc_header response;
588 u8 data[PAGE_SIZE - 36];
589 } __attribute__ ((packed)) *sccl_area;
590 struct {
591 u32 m : 1;
592 u32 : 31;
593 u32 cssid : 8;
594 u32 : 16;
595 u32 chpid : 8;
596 } __attribute__ ((packed)) *chpid_parm;
597 struct {
598 u32 f_cssid : 8;
599 u32 l_cssid : 8;
600 u32 : 16;
601 u32 res;
602 } __attribute__ ((packed)) *cssids_parm;
603
604 sccl_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
605 if (!sccl_area)
606 return -ENOMEM;
607 ccl = kzalloc(sizeof(*ccl), GFP_KERNEL);
608 if (!ccl) {
609 ret = -ENOMEM;
610 goto out_free;
611 }
612 if (copy_from_user(ccl, user_ccl, sizeof(*ccl))) {
613 ret = -EFAULT;
614 goto out_free;
615 }
616 sccl_area->request.length = 0x0020;
617 sccl_area->request.code = 0x0030;
618 sccl_area->fmt = ccl->req.fmt;
619 sccl_area->ctype = ccl->req.ctype;
620 switch (sccl_area->ctype) {
621 case CCL_CU_ON_CHP:
622 case CCL_IOP_CHP:
623 chpid_parm = (void *)&sccl_area->list_parm;
624 chpid_parm->m = ccl->req.chpid.m;
625 chpid_parm->cssid = ccl->req.chpid.chp.cssid;
626 chpid_parm->chpid = ccl->req.chpid.chp.id;
627 break;
628 case CCL_CSS_IMG:
629 case CCL_CSS_IMG_CONF_CHAR:
630 cssids_parm = (void *)&sccl_area->list_parm;
631 cssids_parm->f_cssid = ccl->req.cssids.f_cssid;
632 cssids_parm->l_cssid = ccl->req.cssids.l_cssid;
633 break;
634 }
635 ccode = chsc(sccl_area);
636 if (ccode != 0) {
637 ret = -EIO;
638 goto out_free;
639 }
640 if (sccl_area->response.code != 0x0001) {
641 ret = -EIO;
642 CHSC_MSG(0, "sccl: response code=%x\n",
643 sccl_area->response.code);
644 goto out_free;
645 }
646 memcpy(&ccl->sccl, &sccl_area->response, sccl_area->response.length);
647 if (copy_to_user(user_ccl, ccl, sizeof(*ccl)))
648 ret = -EFAULT;
649 else
650 ret = 0;
651out_free:
652 kfree(ccl);
653 free_page((unsigned long)sccl_area);
654 return ret;
655}
656
657static int chsc_ioctl_chpd(void __user *user_chpd)
658{
659 struct chsc_cpd_info *chpd;
660 int ret;
661
662 chpd = kzalloc(sizeof(*chpd), GFP_KERNEL);
663 if (!chpd)
664 return -ENOMEM;
665 if (copy_from_user(chpd, user_chpd, sizeof(*chpd))) {
666 ret = -EFAULT;
667 goto out_free;
668 }
669 ret = chsc_determine_channel_path_desc(chpd->chpid, chpd->fmt,
670 chpd->rfmt, chpd->c, chpd->m,
671 &chpd->chpdb);
672 if (ret)
673 goto out_free;
674 if (copy_to_user(user_chpd, chpd, sizeof(*chpd)))
675 ret = -EFAULT;
676out_free:
677 kfree(chpd);
678 return ret;
679}
680
681static int chsc_ioctl_dcal(void __user *user_dcal)
682{
683 struct chsc_dcal *dcal;
684 int ret, ccode;
685 struct {
686 struct chsc_header request;
687 u32 atype : 8;
688 u32 : 4;
689 u32 fmt : 4;
690 u32 : 16;
691 u32 res0[2];
692 u32 list_parm[2];
693 u32 res1[2];
694 struct chsc_header response;
695 u8 data[PAGE_SIZE - 36];
696 } __attribute__ ((packed)) *sdcal_area;
697
698 sdcal_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
699 if (!sdcal_area)
700 return -ENOMEM;
701 dcal = kzalloc(sizeof(*dcal), GFP_KERNEL);
702 if (!dcal) {
703 ret = -ENOMEM;
704 goto out_free;
705 }
706 if (copy_from_user(dcal, user_dcal, sizeof(*dcal))) {
707 ret = -EFAULT;
708 goto out_free;
709 }
710 sdcal_area->request.length = 0x0020;
711 sdcal_area->request.code = 0x0034;
712 sdcal_area->atype = dcal->req.atype;
713 sdcal_area->fmt = dcal->req.fmt;
714 memcpy(&sdcal_area->list_parm, &dcal->req.list_parm,
715 sizeof(sdcal_area->list_parm));
716
717 ccode = chsc(sdcal_area);
718 if (ccode != 0) {
719 ret = -EIO;
720 goto out_free;
721 }
722 if (sdcal_area->response.code != 0x0001) {
723 ret = -EIO;
724 CHSC_MSG(0, "sdcal: response code=%x\n",
725 sdcal_area->response.code);
726 goto out_free;
727 }
728 memcpy(&dcal->sdcal, &sdcal_area->response,
729 sdcal_area->response.length);
730 if (copy_to_user(user_dcal, dcal, sizeof(*dcal)))
731 ret = -EFAULT;
732 else
733 ret = 0;
734out_free:
735 kfree(dcal);
736 free_page((unsigned long)sdcal_area);
737 return ret;
738}
739
740static long chsc_ioctl(struct file *filp, unsigned int cmd,
741 unsigned long arg)
742{
743 CHSC_MSG(2, "chsc_ioctl called, cmd=%x\n", cmd);
744 switch (cmd) {
745 case CHSC_START:
746 return chsc_ioctl_start((void __user *)arg);
747 case CHSC_INFO_CHANNEL_PATH:
748 return chsc_ioctl_info_channel_path((void __user *)arg);
749 case CHSC_INFO_CU:
750 return chsc_ioctl_info_cu((void __user *)arg);
751 case CHSC_INFO_SCH_CU:
752 return chsc_ioctl_info_sch_cu((void __user *)arg);
753 case CHSC_INFO_CI:
754 return chsc_ioctl_conf_info((void __user *)arg);
755 case CHSC_INFO_CCL:
756 return chsc_ioctl_conf_comp_list((void __user *)arg);
757 case CHSC_INFO_CPD:
758 return chsc_ioctl_chpd((void __user *)arg);
759 case CHSC_INFO_DCAL:
760 return chsc_ioctl_dcal((void __user *)arg);
761 default: /* unknown ioctl number */
762 return -ENOIOCTLCMD;
763 }
764}
765
766static const struct file_operations chsc_fops = {
767 .owner = THIS_MODULE,
768 .unlocked_ioctl = chsc_ioctl,
769 .compat_ioctl = chsc_ioctl,
770};
771
772static struct miscdevice chsc_misc_device = {
773 .minor = MISC_DYNAMIC_MINOR,
774 .name = "chsc",
775 .fops = &chsc_fops,
776};
777
778static int __init chsc_misc_init(void)
779{
780 return misc_register(&chsc_misc_device);
781}
782
783static void chsc_misc_cleanup(void)
784{
785 misc_deregister(&chsc_misc_device);
786}
787
788static int __init chsc_sch_init(void)
789{
790 int ret;
791
792 ret = chsc_init_dbfs();
793 if (ret)
794 return ret;
795 isc_register(CHSC_SCH_ISC);
796 ret = chsc_init_sch_driver();
797 if (ret)
798 goto out_dbf;
799 ret = chsc_misc_init();
800 if (ret)
801 goto out_driver;
802 return ret;
803out_driver:
804 chsc_cleanup_sch_driver();
805out_dbf:
806 isc_unregister(CHSC_SCH_ISC);
807 chsc_remove_dbfs();
808 return ret;
809}
810
811static void __exit chsc_sch_exit(void)
812{
813 chsc_misc_cleanup();
814 chsc_cleanup_sch_driver();
815 isc_unregister(CHSC_SCH_ISC);
816 chsc_remove_dbfs();
817}
818
819module_init(chsc_sch_init);
820module_exit(chsc_sch_exit);
diff --git a/drivers/s390/cio/chsc_sch.h b/drivers/s390/cio/chsc_sch.h
new file mode 100644
index 000000000000..589ebfad6aad
--- /dev/null
+++ b/drivers/s390/cio/chsc_sch.h
@@ -0,0 +1,13 @@
1#ifndef _CHSC_SCH_H
2#define _CHSC_SCH_H
3
4struct chsc_request {
5 struct completion completion;
6 struct irb irb;
7};
8
9struct chsc_private {
10 struct chsc_request *request;
11};
12
13#endif
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 34b38fb7c2f7..6ebf1b507362 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -877,6 +877,12 @@ __clear_io_subchannel_easy(struct subchannel_id schid)
877 return -EBUSY; 877 return -EBUSY;
878} 878}
879 879
880static void __clear_chsc_subchannel_easy(void)
881{
882 /* It seems we can only wait for a bit here :/ */
883 udelay_reset(100);
884}
885
880static int pgm_check_occured; 886static int pgm_check_occured;
881 887
882static void cio_reset_pgm_check_handler(void) 888static void cio_reset_pgm_check_handler(void)
@@ -920,6 +926,9 @@ static int __shutdown_subchannel_easy(struct subchannel_id schid, void *data)
920 if (__clear_io_subchannel_easy(schid)) 926 if (__clear_io_subchannel_easy(schid))
921 goto out; /* give up... */ 927 goto out; /* give up... */
922 break; 928 break;
929 case SUBCHANNEL_TYPE_CHSC:
930 __clear_chsc_subchannel_easy();
931 break;
923 default: 932 default:
924 /* No default clear strategy */ 933 /* No default clear strategy */
925 break; 934 break;
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index 2e7e571d1200..3b236d20e835 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -7,8 +7,8 @@
7#include <asm/chpid.h> 7#include <asm/chpid.h>
8#include <asm/cio.h> 8#include <asm/cio.h>
9#include <asm/fcx.h> 9#include <asm/fcx.h>
10#include <asm/schid.h>
10#include "chsc.h" 11#include "chsc.h"
11#include "schid.h"
12 12
13/* 13/*
14 * path management control word 14 * path management control word
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 58020bf41ed0..57ebf120f825 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -9,8 +9,7 @@
9 9
10#include <asm/cio.h> 10#include <asm/cio.h>
11#include <asm/chpid.h> 11#include <asm/chpid.h>
12 12#include <asm/schid.h>
13#include "schid.h"
14 13
15/* 14/*
16 * path grouping stuff 15 * path grouping stuff
diff --git a/drivers/s390/cio/idset.h b/drivers/s390/cio/idset.h
index 144466ab8c15..528065cb5021 100644
--- a/drivers/s390/cio/idset.h
+++ b/drivers/s390/cio/idset.h
@@ -8,7 +8,7 @@
8#ifndef S390_IDSET_H 8#ifndef S390_IDSET_H
9#define S390_IDSET_H S390_IDSET_H 9#define S390_IDSET_H S390_IDSET_H
10 10
11#include "schid.h" 11#include <asm/schid.h>
12 12
13struct idset; 13struct idset;
14 14
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
index b774960e76af..3f8f1cf69c76 100644
--- a/drivers/s390/cio/io_sch.h
+++ b/drivers/s390/cio/io_sch.h
@@ -1,7 +1,7 @@
1#ifndef S390_IO_SCH_H 1#ifndef S390_IO_SCH_H
2#define S390_IO_SCH_H 2#define S390_IO_SCH_H
3 3
4#include "schid.h" 4#include <asm/schid.h>
5 5
6/* 6/*
7 * command-mode operation request block 7 * command-mode operation request block
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h
index 652ea3625f9d..9fa2ac13ac85 100644
--- a/drivers/s390/cio/ioasm.h
+++ b/drivers/s390/cio/ioasm.h
@@ -2,7 +2,7 @@
2#define S390_CIO_IOASM_H 2#define S390_CIO_IOASM_H
3 3
4#include <asm/chpid.h> 4#include <asm/chpid.h>
5#include "schid.h" 5#include <asm/schid.h>
6 6
7/* 7/*
8 * TPI info structure 8 * TPI info structure
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 733934a166b1..7656081a24d2 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -3,8 +3,7 @@
3 3
4#include <asm/page.h> 4#include <asm/page.h>
5#include <asm/isc.h> 5#include <asm/isc.h>
6 6#include <asm/schid.h>
7#include "schid.h"
8 7
9#ifdef CONFIG_QDIO_DEBUG 8#ifdef CONFIG_QDIO_DEBUG
10#define QDIO_VERBOSE_LEVEL 9 9#define QDIO_VERBOSE_LEVEL 9
diff --git a/drivers/s390/cio/schid.h b/drivers/s390/cio/schid.h
deleted file mode 100644
index 54328fec5ade..000000000000
--- a/drivers/s390/cio/schid.h
+++ /dev/null
@@ -1,26 +0,0 @@
1#ifndef S390_SCHID_H
2#define S390_SCHID_H
3
4struct subchannel_id {
5 __u32 reserved:13;
6 __u32 ssid:2;
7 __u32 one:1;
8 __u32 sch_no:16;
9} __attribute__ ((packed,aligned(4)));
10
11
12/* Helper function for sane state of pre-allocated subchannel_id. */
13static inline void
14init_subchannel_id(struct subchannel_id *schid)
15{
16 memset(schid, 0, sizeof(struct subchannel_id));
17 schid->one = 1;
18}
19
20static inline int
21schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2)
22{
23 return !memcmp(schid1, schid2, sizeof(struct subchannel_id));
24}
25
26#endif /* S390_SCHID_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-08 00:39:55 -0400