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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2016-06-22 19:42:40 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-03-26 16:13:16 +0200 |
| commit | fcc6dd4b7b4dfc57ba19f988cfa5ac335de885d5 (patch) | |
| tree | 09be12638fc83eadcfa87456ae3598f06571dd29 | |
| parent | s390/cio: rename struct channel_path_desc (diff) | |
| download | linux-fcc6dd4b7b4dfc57ba19f988cfa5ac335de885d5.tar.xz linux-fcc6dd4b7b4dfc57ba19f988cfa5ac335de885d5.zip | |
s390/chsc: query utility strings via fmt3 channel path descriptor
Add support for format 3 channel path descriptors and use them to
gather utility strings.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/css_chars.h | 6 | ||||
| -rw-r--r-- | drivers/s390/cio/chp.c | 1 | ||||
| -rw-r--r-- | drivers/s390/cio/chp.h | 1 | ||||
| -rw-r--r-- | drivers/s390/cio/chsc.c | 3 | ||||
| -rw-r--r-- | drivers/s390/cio/chsc.h | 7 |
5 files changed, 16 insertions, 2 deletions
diff --git a/arch/s390/include/asm/css_chars.h b/arch/s390/include/asm/css_chars.h index fb56fa3283a2..0563fd3e8458 100644 --- a/arch/s390/include/asm/css_chars.h +++ b/arch/s390/include/asm/css_chars.h @@ -32,8 +32,10 @@ struct css_general_char { u32 fcx : 1; /* bit 88 */ u32 : 19; u32 alt_ssi : 1; /* bit 108 */ - u32:1; - u32 narf:1; /* bit 110 */ + u32 : 1; + u32 narf : 1; /* bit 110 */ + u32 : 12; + u32 util_str : 1;/* bit 123 */ } __packed; extern struct css_general_char css_general_characteristics; diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 34315e65c1c8..41ecc08b1cf7 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -431,6 +431,7 @@ int chp_update_desc(struct channel_path *chp) * hypervisors implement the required chsc commands. */ chsc_determine_fmt1_channel_path_desc(chp->chpid, &chp->desc_fmt1); + chsc_determine_fmt3_channel_path_desc(chp->chpid, &chp->desc_fmt3); chsc_get_channel_measurement_chars(chp); return 0; diff --git a/drivers/s390/cio/chp.h b/drivers/s390/cio/chp.h index 6d2bfbbead66..20259f3fbf45 100644 --- a/drivers/s390/cio/chp.h +++ b/drivers/s390/cio/chp.h @@ -46,6 +46,7 @@ struct channel_path { int state; struct channel_path_desc_fmt0 desc; struct channel_path_desc_fmt1 desc_fmt1; + struct channel_path_desc_fmt3 desc_fmt3; /* Channel-measurement related stuff: */ int cmg; int shared; diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 65290e5ac854..6652a49a49b1 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -915,6 +915,8 @@ int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, return -EINVAL; if ((rfmt == 2) && !css_general_characteristics.cib) return -EINVAL; + if ((rfmt == 3) && !css_general_characteristics.util_str) + return -EINVAL; memset(page, 0, PAGE_SIZE); scpd_area = page; @@ -963,6 +965,7 @@ out: \ chsc_det_chp_desc(0, 0) chsc_det_chp_desc(1, 1) +chsc_det_chp_desc(3, 0) static void chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv, diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index bdf2cc90e5ef..5c9f0dd33f4e 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -40,6 +40,11 @@ struct channel_path_desc_fmt1 { u32 zeros[2]; } __attribute__ ((packed)); +struct channel_path_desc_fmt3 { + struct channel_path_desc_fmt1 fmt1_desc; + u8 util_str[64]; +}; + struct channel_path; struct css_chsc_char { @@ -151,6 +156,8 @@ int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid, struct channel_path_desc_fmt0 *desc); int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, struct channel_path_desc_fmt1 *desc); +int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid, + struct channel_path_desc_fmt3 *desc); void chsc_chp_online(struct chp_id chpid); void chsc_chp_offline(struct chp_id chpid); int chsc_get_channel_measurement_chars(struct channel_path *chp); |