1 files changed, 68 insertions, 0 deletions

diff --git a/arch/s390/include/asm/crw.h b/arch/s390/include/asm/crw.h
new file mode 100644
index 00000000000..2185a6d619d
--- /dev/null
+++ b/arch/s390/include/asm/crw.h
@@ -0,0 +1,68 @@
+/*
+ *   Data definitions for channel report processing
+ *    Copyright IBM Corp. 2000,2009
+ *    Author(s): Ingo Adlung <adlung@de.ibm.com>,
+ *               Martin Schwidefsky <schwidefsky@de.ibm.com>,
+ *               Cornelia Huck <cornelia.huck@de.ibm.com>,
+ *               Heiko Carstens <heiko.carstens@de.ibm.com>,
+ */
+
+#ifndef _ASM_S390_CRW_H
+#define _ASM_S390_CRW_H
+
+#include <linux/types.h>
+
+/*
+ * Channel Report Word
+ */
+struct crw {
+        __u32 res1 :  1;   /* reserved zero */
+        __u32 slct :  1;   /* solicited */
+        __u32 oflw :  1;   /* overflow */
+        __u32 chn  :  1;   /* chained */
+        __u32 rsc  :  4;   /* reporting source code */
+        __u32 anc  :  1;   /* ancillary report */
+        __u32 res2 :  1;   /* reserved zero */
+        __u32 erc  :  6;   /* error-recovery code */
+        __u32 rsid : 16;   /* reporting-source ID */
+} __attribute__ ((packed));
+
+typedef void (*crw_handler_t)(struct crw *, struct crw *, int);
+
+extern int crw_register_handler(int rsc, crw_handler_t handler);
+extern void crw_unregister_handler(int rsc);
+extern void crw_handle_channel_report(void);
+
+#define NR_RSCS 16
+
+#define CRW_RSC_MONITOR  0x2  /* monitoring facility */
+#define CRW_RSC_SCH      0x3  /* subchannel */
+#define CRW_RSC_CPATH    0x4  /* channel path */
+#define CRW_RSC_CONFIG   0x9  /* configuration-alert facility */
+#define CRW_RSC_CSS      0xB  /* channel subsystem */
+
+#define CRW_ERC_EVENT    0x00 /* event information pending */
+#define CRW_ERC_AVAIL    0x01 /* available */
+#define CRW_ERC_INIT     0x02 /* initialized */
+#define CRW_ERC_TERROR   0x03 /* temporary error */
+#define CRW_ERC_IPARM    0x04 /* installed parm initialized */
+#define CRW_ERC_TERM     0x05 /* terminal */
+#define CRW_ERC_PERRN    0x06 /* perm. error, fac. not init */
+#define CRW_ERC_PERRI    0x07 /* perm. error, facility init */
+#define CRW_ERC_PMOD     0x08 /* installed parameters modified */
+
+static inline int stcrw(struct crw *pcrw)
+{
+        int ccode;
+
+        asm volatile(
+                "       stcrw   0(%2)\n"
+                "       ipm     %0\n"
+                "       srl     %0,28\n"
+                : "=d" (ccode), "=m" (*pcrw)
+                : "a" (pcrw)
+                : "cc" );
+        return ccode;
+}
+
+#endif /* _ASM_S390_CRW_H */