diff options
Diffstat (limited to 'drivers/s390/block/dasd_diag.c')
| -rw-r--r-- | drivers/s390/block/dasd_diag.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index ea4b1d01bb76..56f1af8a7ddd 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -18,6 +18,7 @@ #include <linux/init.h> #include <linux/jiffies.h> #include <asm/asm-extable.h> +#include <asm/machine.h> #include <asm/dasd.h> #include <asm/debug.h> #include <asm/diag.h> @@ -25,10 +26,12 @@ #include <linux/io.h> #include <asm/irq.h> #include <asm/vtoc.h> +#include <asm/asm.h> #include "dasd_int.h" #include "dasd_diag.h" +MODULE_DESCRIPTION("S/390 Support for DIAG access to DASD Disks"); MODULE_LICENSE("GPL"); /* The maximum number of blocks per request (max_blocks) is dependent on the @@ -66,22 +69,24 @@ static const u8 DASD_DIAG_CMS1[] = { 0xc3, 0xd4, 0xe2, 0xf1 };/* EBCDIC CMS1 */ static inline int __dia250(void *iob, int cmd) { union register_pair rx = { .even = (unsigned long)iob, }; + int cc, exception; typedef union { struct dasd_diag_init_io init_io; struct dasd_diag_rw_io rw_io; } addr_type; - int cc; - cc = 3; - asm volatile( + exception = 1; + asm_inline volatile( " diag %[rx],%[cmd],0x250\n" - "0: ipm %[cc]\n" - " srl %[cc],28\n" + "0: lhi %[exc],0\n" "1:\n" + CC_IPM(cc) EX_TABLE(0b,1b) - : [cc] "+&d" (cc), [rx] "+&d" (rx.pair), "+m" (*(addr_type *)iob) + : CC_OUT(cc, cc), [rx] "+d" (rx.pair), + "+m" (*(addr_type *)iob), [exc] "+d" (exception) : [cmd] "d" (cmd) - : "cc"); + : CC_CLOBBER); + cc = exception ? 3 : CC_TRANSFORM(cc); return cc | rx.odd; } @@ -650,7 +655,7 @@ static struct dasd_discipline dasd_diag_discipline = { static int __init dasd_diag_init(void) { - if (!MACHINE_IS_VM) { + if (!machine_is_vm()) { pr_info("Discipline %s cannot be used without z/VM\n", dasd_diag_discipline.name); return -ENODEV; |