diff options
| author | Sven Schnelle <svens@linux.ibm.com> | 2022-11-17 22:02:01 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-01-09 14:33:56 +0100 |
| commit | fbaee7464fbb61a4cb484d9c41f14517738c80c7 (patch) | |
| tree | 84d4f4624a40ce6e2659c51e960168c2dd63d11d /arch/s390/include/asm/diag.h | |
| parent | 9603cb334a7dc30fb544a3579bcbf23ae5b04f8f (diff) | |
s390/tty3270: add support for diag 8c
The current code uses diag210 to infer the 3270 geometry from the
model number when running on z/VM. This doesn't work well as almost
all 3270 software clients report as 3279-2 with a custom resolution.
tty3270 assumes it has a 80x24 terminal connected because of the -2
suffix. Use diag 8c to fetch the realy geometry from z/VM.
Note that this doesn't allow dynamic resizing, i.e. reconnecting to
a z/VM session with a different geometry.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/diag.h')
| -rw-r--r-- | arch/s390/include/asm/diag.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h index 56e99c286d12..9488b7ffb21c 100644 --- a/arch/s390/include/asm/diag.h +++ b/arch/s390/include/asm/diag.h @@ -12,6 +12,7 @@ #include <linux/if_ether.h> #include <linux/percpu.h> #include <asm/asm-extable.h> +#include <asm/cio.h> enum diag_stat_enum { DIAG_STAT_X008, @@ -20,6 +21,7 @@ enum diag_stat_enum { DIAG_STAT_X014, DIAG_STAT_X044, DIAG_STAT_X064, + DIAG_STAT_X08C, DIAG_STAT_X09C, DIAG_STAT_X0DC, DIAG_STAT_X204, @@ -83,6 +85,16 @@ struct diag210 { extern int diag210(struct diag210 *addr); +struct diag8c { + u8 flags; + u8 num_partitions; + u16 width; + u16 height; + u8 data[0]; +} __packed __aligned(4); + +extern int diag8c(struct diag8c *out, struct ccw_dev_id *devno); + /* bit is set in flags, when physical cpu info is included in diag 204 data */ #define DIAG204_LPAR_PHYS_FLG 0x80 #define DIAG204_LPAR_NAME_LEN 8 /* lpar name len in diag 204 data */ @@ -318,6 +330,7 @@ struct diag_ops { int (*diag210)(struct diag210 *addr); int (*diag26c)(void *req, void *resp, enum diag26c_sc subcode); int (*diag14)(unsigned long rx, unsigned long ry1, unsigned long subcode); + int (*diag8c)(struct diag8c *addr, struct ccw_dev_id *devno, size_t len); void (*diag0c)(struct hypfs_diag0c_entry *entry); void (*diag308_reset)(void); }; @@ -330,5 +343,6 @@ int _diag26c_amode31(void *req, void *resp, enum diag26c_sc subcode); int _diag14_amode31(unsigned long rx, unsigned long ry1, unsigned long subcode); void _diag0c_amode31(struct hypfs_diag0c_entry *entry); void _diag308_reset_amode31(void); +int _diag8c_amode31(struct diag8c *addr, struct ccw_dev_id *devno, size_t len); #endif /* _ASM_S390_DIAG_H */ |