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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-01-26 08:10:57 -0500
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-01-26 08:11:10 -0500
commit4b28a8fe78bd593cdc4454cf28af71ca9556914d (patch)
tree7e7074b83128ee16e69cb676a53dd7dbb579b3a6 /drivers/s390
parent08d07968277cd898c88bf12b7720d89c02c4f139 (diff)
[S390] sclp: convert channel path configure code to use sync interface.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/Makefile2
-rw-r--r--drivers/s390/char/sclp_chp.c200
-rw-r--r--drivers/s390/char/sclp_cmd.c123
3 files changed, 123 insertions, 202 deletions
diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index 9317333ec149..7e73e39a1741 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -3,7 +3,7 @@
3# 3#
4 4
5obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \ 5obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \
6 sclp_cmd.o sclp_config.o sclp_chp.o sclp_cpi_sys.o 6 sclp_cmd.o sclp_config.o sclp_cpi_sys.o
7 7
8obj-$(CONFIG_TN3270) += raw3270.o 8obj-$(CONFIG_TN3270) += raw3270.o
9obj-$(CONFIG_TN3270_CONSOLE) += con3270.o 9obj-$(CONFIG_TN3270_CONSOLE) += con3270.o
diff --git a/drivers/s390/char/sclp_chp.c b/drivers/s390/char/sclp_chp.c
deleted file mode 100644
index c68f5e7e63a0..000000000000
--- a/drivers/s390/char/sclp_chp.c
+++ /dev/null
@@ -1,200 +0,0 @@
1/*
2 * drivers/s390/char/sclp_chp.c
3 *
4 * Copyright IBM Corp. 2007
5 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
6 */
7
8#include <linux/types.h>
9#include <linux/gfp.h>
10#include <linux/errno.h>
11#include <linux/completion.h>
12#include <asm/sclp.h>
13#include <asm/chpid.h>
14
15#include "sclp.h"
16
17#define TAG "sclp_chp: "
18
19#define SCLP_CMDW_CONFIGURE_CHANNEL_PATH 0x000f0001
20#define SCLP_CMDW_DECONFIGURE_CHANNEL_PATH 0x000e0001
21#define SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION 0x00030001
22
23static inline sclp_cmdw_t get_configure_cmdw(struct chp_id chpid)
24{
25 return SCLP_CMDW_CONFIGURE_CHANNEL_PATH | chpid.id << 8;
26}
27
28static inline sclp_cmdw_t get_deconfigure_cmdw(struct chp_id chpid)
29{
30 return SCLP_CMDW_DECONFIGURE_CHANNEL_PATH | chpid.id << 8;
31}
32
33static void chp_callback(struct sclp_req *req, void *data)
34{
35 struct completion *completion = data;
36
37 complete(completion);
38}
39
40struct chp_cfg_sccb {
41 struct sccb_header header;
42 u8 ccm;
43 u8 reserved[6];
44 u8 cssid;
45} __attribute__((packed));
46
47struct chp_cfg_data {
48 struct chp_cfg_sccb sccb;
49 struct sclp_req req;
50 struct completion completion;
51} __attribute__((packed));
52
53static int do_configure(sclp_cmdw_t cmd)
54{
55 struct chp_cfg_data *data;
56 int rc;
57
58 if (!SCLP_HAS_CHP_RECONFIG)
59 return -EOPNOTSUPP;
60 /* Prepare sccb. */
61 data = (struct chp_cfg_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
62 if (!data)
63 return -ENOMEM;
64 data->sccb.header.length = sizeof(struct chp_cfg_sccb);
65 data->req.command = cmd;
66 data->req.sccb = &(data->sccb);
67 data->req.status = SCLP_REQ_FILLED;
68 data->req.callback = chp_callback;
69 data->req.callback_data = &(data->completion);
70 init_completion(&data->completion);
71
72 /* Perform sclp request. */
73 rc = sclp_add_request(&(data->req));
74 if (rc)
75 goto out;
76 wait_for_completion(&data->completion);
77
78 /* Check response .*/
79 if (data->req.status != SCLP_REQ_DONE) {
80 printk(KERN_WARNING TAG "configure channel-path request failed "
81 "(status=0x%02x)\n", data->req.status);
82 rc = -EIO;
83 goto out;
84 }
85 switch (data->sccb.header.response_code) {
86 case 0x0020:
87 case 0x0120:
88 case 0x0440:
89 case 0x0450:
90 break;
91 default:
92 printk(KERN_WARNING TAG "configure channel-path failed "
93 "(cmd=0x%08x, response=0x%04x)\n", cmd,
94 data->sccb.header.response_code);
95 rc = -EIO;
96 break;
97 }
98out:
99 free_page((unsigned long) data);
100
101 return rc;
102}
103
104/**
105 * sclp_chp_configure - perform configure channel-path sclp command
106 * @chpid: channel-path ID
107 *
108 * Perform configure channel-path command sclp command for specified chpid.
109 * Return 0 after command successfully finished, non-zero otherwise.
110 */
111int sclp_chp_configure(struct chp_id chpid)
112{
113 return do_configure(get_configure_cmdw(chpid));
114}
115
116/**
117 * sclp_chp_deconfigure - perform deconfigure channel-path sclp command
118 * @chpid: channel-path ID
119 *
120 * Perform deconfigure channel-path command sclp command for specified chpid
121 * and wait for completion. On success return 0. Return non-zero otherwise.
122 */
123int sclp_chp_deconfigure(struct chp_id chpid)
124{
125 return do_configure(get_deconfigure_cmdw(chpid));
126}
127
128struct chp_info_sccb {
129 struct sccb_header header;
130 u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
131 u8 standby[SCLP_CHP_INFO_MASK_SIZE];
132 u8 configured[SCLP_CHP_INFO_MASK_SIZE];
133 u8 ccm;
134 u8 reserved[6];
135 u8 cssid;
136} __attribute__((packed));
137
138struct chp_info_data {
139 struct chp_info_sccb sccb;
140 struct sclp_req req;
141 struct completion completion;
142} __attribute__((packed));
143
144/**
145 * sclp_chp_read_info - perform read channel-path information sclp command
146 * @info: resulting channel-path information data
147 *
148 * Perform read channel-path information sclp command and wait for completion.
149 * On success, store channel-path information in @info and return 0. Return
150 * non-zero otherwise.
151 */
152int sclp_chp_read_info(struct sclp_chp_info *info)
153{
154 struct chp_info_data *data;
155 int rc;
156
157 if (!SCLP_HAS_CHP_INFO)
158 return -EOPNOTSUPP;
159 /* Prepare sccb. */
160 data = (struct chp_info_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
161 if (!data)
162 return -ENOMEM;
163 data->sccb.header.length = sizeof(struct chp_info_sccb);
164 data->req.command = SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION;
165 data->req.sccb = &(data->sccb);
166 data->req.status = SCLP_REQ_FILLED;
167 data->req.callback = chp_callback;
168 data->req.callback_data = &(data->completion);
169 init_completion(&data->completion);
170
171 /* Perform sclp request. */
172 rc = sclp_add_request(&(data->req));
173 if (rc)
174 goto out;
175 wait_for_completion(&data->completion);
176
177 /* Check response .*/
178 if (data->req.status != SCLP_REQ_DONE) {
179 printk(KERN_WARNING TAG "read channel-path info request failed "
180 "(status=0x%02x)\n", data->req.status);
181 rc = -EIO;
182 goto out;
183 }
184 if (data->sccb.header.response_code != 0x0010) {
185 printk(KERN_WARNING TAG "read channel-path info failed "
186 "(response=0x%04x)\n", data->sccb.header.response_code);
187 rc = -EIO;
188 goto out;
189 }
190 memcpy(info->recognized, data->sccb.recognized,
191 SCLP_CHP_INFO_MASK_SIZE);
192 memcpy(info->standby, data->sccb.standby,
193 SCLP_CHP_INFO_MASK_SIZE);
194 memcpy(info->configured, data->sccb.configured,
195 SCLP_CHP_INFO_MASK_SIZE);
196out:
197 free_page((unsigned long) data);
198
199 return rc;
200}
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index ba004fd43c05..d7e6f4d65b78 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -2,7 +2,8 @@
2 * drivers/s390/char/sclp_cmd.c 2 * drivers/s390/char/sclp_cmd.c
3 * 3 *
4 * Copyright IBM Corp. 2007 4 * Copyright IBM Corp. 2007
5 * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> 5 * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
6 * Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
6 */ 7 */
7 8
8#include <linux/completion.h> 9#include <linux/completion.h>
@@ -10,6 +11,7 @@
10#include <linux/errno.h> 11#include <linux/errno.h>
11#include <linux/slab.h> 12#include <linux/slab.h>
12#include <linux/string.h> 13#include <linux/string.h>
14#include <asm/chpid.h>
13#include <asm/sclp.h> 15#include <asm/sclp.h>
14#include "sclp.h" 16#include "sclp.h"
15 17
@@ -317,3 +319,122 @@ int sclp_cpu_deconfigure(u8 cpu)
317{ 319{
318 return do_cpu_configure(SCLP_CMDW_DECONFIGURE_CPU | cpu << 8); 320 return do_cpu_configure(SCLP_CMDW_DECONFIGURE_CPU | cpu << 8);
319} 321}
322
323/*
324 * Channel path configuration related functions.
325 */
326
327#define SCLP_CMDW_CONFIGURE_CHPATH 0x000f0001
328#define SCLP_CMDW_DECONFIGURE_CHPATH 0x000e0001
329#define SCLP_CMDW_READ_CHPATH_INFORMATION 0x00030001
330
331struct chp_cfg_sccb {
332 struct sccb_header header;
333 u8 ccm;
334 u8 reserved[6];
335 u8 cssid;
336} __attribute__((packed));
337
338static int do_chp_configure(sclp_cmdw_t cmd)
339{
340 struct chp_cfg_sccb *sccb;
341 int rc;
342
343 if (!SCLP_HAS_CHP_RECONFIG)
344 return -EOPNOTSUPP;
345 /* Prepare sccb. */
346 sccb = (struct chp_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
347 if (!sccb)
348 return -ENOMEM;
349 sccb->header.length = sizeof(*sccb);
350 rc = do_sync_request(cmd, sccb);
351 if (rc)
352 goto out;
353 switch (sccb->header.response_code) {
354 case 0x0020:
355 case 0x0120:
356 case 0x0440:
357 case 0x0450:
358 break;
359 default:
360 printk(KERN_WARNING TAG "configure channel-path failed "
361 "(cmd=0x%08x, response=0x%04x)\n", cmd,
362 sccb->header.response_code);
363 rc = -EIO;
364 break;
365 }
366out:
367 free_page((unsigned long) sccb);
368 return rc;
369}
370
371/**
372 * sclp_chp_configure - perform configure channel-path sclp command
373 * @chpid: channel-path ID
374 *
375 * Perform configure channel-path command sclp command for specified chpid.
376 * Return 0 after command successfully finished, non-zero otherwise.
377 */
378int sclp_chp_configure(struct chp_id chpid)
379{
380 return do_chp_configure(SCLP_CMDW_CONFIGURE_CHPATH | chpid.id << 8);
381}
382
383/**
384 * sclp_chp_deconfigure - perform deconfigure channel-path sclp command
385 * @chpid: channel-path ID
386 *
387 * Perform deconfigure channel-path command sclp command for specified chpid
388 * and wait for completion. On success return 0. Return non-zero otherwise.
389 */
390int sclp_chp_deconfigure(struct chp_id chpid)
391{
392 return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8);
393}
394
395struct chp_info_sccb {
396 struct sccb_header header;
397 u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
398 u8 standby[SCLP_CHP_INFO_MASK_SIZE];
399 u8 configured[SCLP_CHP_INFO_MASK_SIZE];
400 u8 ccm;
401 u8 reserved[6];
402 u8 cssid;
403} __attribute__((packed));
404
405/**
406 * sclp_chp_read_info - perform read channel-path information sclp command
407 * @info: resulting channel-path information data
408 *
409 * Perform read channel-path information sclp command and wait for completion.
410 * On success, store channel-path information in @info and return 0. Return
411 * non-zero otherwise.
412 */
413int sclp_chp_read_info(struct sclp_chp_info *info)
414{
415 struct chp_info_sccb *sccb;
416 int rc;
417
418 if (!SCLP_HAS_CHP_INFO)
419 return -EOPNOTSUPP;
420 /* Prepare sccb. */
421 sccb = (struct chp_info_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
422 if (!sccb)
423 return -ENOMEM;
424 sccb->header.length = sizeof(*sccb);
425 rc = do_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb);
426 if (rc)
427 goto out;
428 if (sccb->header.response_code != 0x0010) {
429 printk(KERN_WARNING TAG "read channel-path info failed "
430 "(response=0x%04x)\n", sccb->header.response_code);
431 rc = -EIO;
432 goto out;
433 }
434 memcpy(info->recognized, sccb->recognized, SCLP_CHP_INFO_MASK_SIZE);
435 memcpy(info->standby, sccb->standby, SCLP_CHP_INFO_MASK_SIZE);
436 memcpy(info->configured, sccb->configured, SCLP_CHP_INFO_MASK_SIZE);
437out:
438 free_page((unsigned long) sccb);
439 return rc;
440}
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