s390/hmcdrv: HMC drive CD/DVD access

This device driver allows accessing a HMC drive CD/DVD-ROM.
It can be used in a LPAR and z/VM environment.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ralf Hoppe <rhoppe@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/drivers/s390/char/sclp_diag.h b/drivers/s390/char/sclp_diag.h
new file mode 100644
index 000000000000..59c4afa5e670
--- /dev/null
+++ b/drivers/s390/char/sclp_diag.h
@@ -0,0 +1,89 @@
+/*
+ *    Copyright IBM Corp. 2013
+ *    Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
+ */
+
+#ifndef _SCLP_DIAG_H
+#define _SCLP_DIAG_H
+
+#include <linux/types.h>
+
+/* return codes for Diagnostic Test FTP Service, as indicated in member
+ * sclp_diag_ftp::ldflg
+ */
+#define SCLP_DIAG_FTP_OK        0x80U /* success */
+#define SCLP_DIAG_FTP_LDFAIL    0x01U /* load failed */
+#define SCLP_DIAG_FTP_LDNPERM   0x02U /* not allowed */
+#define SCLP_DIAG_FTP_LDRUNS    0x03U /* LD runs */
+#define SCLP_DIAG_FTP_LDNRUNS   0x04U /* LD does not run */
+
+#define SCLP_DIAG_FTP_XPCX      0x80 /* PCX communication code */
+#define SCLP_DIAG_FTP_ROUTE     4 /* routing code for new FTP service */
+
+/*
+ * length of Diagnostic Test FTP Service event buffer
+ */
+#define SCLP_DIAG_FTP_EVBUF_LEN                         \
+        (offsetof(struct sclp_diag_evbuf, mdd) +        \
+         sizeof(struct sclp_diag_ftp))
+
+/**
+ * struct sclp_diag_ftp - Diagnostic Test FTP Service model-dependent data
+ * @pcx: code for PCX communication (should be 0x80)
+ * @ldflg: load flag (see defines above)
+ * @cmd: FTP command
+ * @pgsize: page size (0 = 4kB, 1 = large page size)
+ * @srcflg: source flag
+ * @spare: reserved (zeroes)
+ * @offset: file offset
+ * @fsize: file size
+ * @length: buffer size resp. bytes transferred
+ * @failaddr: failing address
+ * @bufaddr: buffer address, virtual
+ * @asce: region or segment table designation
+ * @fident: file name (ASCII, zero-terminated)
+ */
+struct sclp_diag_ftp {
+        u8 pcx;
+        u8 ldflg;
+        u8 cmd;
+        u8 pgsize;
+        u8 srcflg;
+        u8 spare;
+        u64 offset;
+        u64 fsize;
+        u64 length;
+        u64 failaddr;
+        u64 bufaddr;
+        u64 asce;
+
+        u8 fident[256];
+} __packed;
+
+/**
+ * struct sclp_diag_evbuf - Diagnostic Test (ET7) Event Buffer
+ * @hdr: event buffer header
+ * @route: diagnostic route
+ * @mdd: model-dependent data (@route dependent)
+ */
+struct sclp_diag_evbuf {
+        struct evbuf_header hdr;
+        u16 route;
+
+        union {
+                struct sclp_diag_ftp ftp;
+        } mdd;
+} __packed;
+
+/**
+ * struct sclp_diag_sccb - Diagnostic Test (ET7) SCCB
+ * @hdr: SCCB header
+ * @evbuf: event buffer
+ */
+struct sclp_diag_sccb {
+
+        struct sccb_header hdr;
+        struct sclp_diag_evbuf evbuf;
+} __packed;
+
+#endif /* _SCLP_DIAG_H */