Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 63 insertions, 0 deletions

diff --git a/include/linux/pg.h b/include/linux/pg.h
new file mode 100644
index 000000000000..db994bb0c794
--- /dev/null
+++ b/include/linux/pg.h
@@ -0,0 +1,63 @@
+/*      pg.h (c) 1998  Grant R. Guenther <grant@torque.net>
+                       Under the terms of the GNU General Public License
+
+
+        pg.h defines the user interface to the generic ATAPI packet
+        command driver for parallel port ATAPI devices (pg). The
+        driver is loosely modelled after the generic SCSI driver, sg,
+        although the actual interface is different.
+
+        The pg driver provides a simple character device interface for
+        sending ATAPI commands to a device.  With the exception of the
+        ATAPI reset operation, all operations are performed by a pair
+        of read and write operations to the appropriate /dev/pgN device.
+        A write operation delivers a command and any outbound data in
+        a single buffer.  Normally, the write will succeed unless the
+        device is offline or malfunctioning, or there is already another
+        command pending.  If the write succeeds, it should be followed
+        immediately by a read operation, to obtain any returned data and
+        status information.  A read will fail if there is no operation
+        in progress.
+
+        As a special case, the device can be reset with a write operation,
+        and in this case, no following read is expected, or permitted.
+
+        There are no ioctl() operations.  Any single operation
+        may transfer at most PG_MAX_DATA bytes.  Note that the driver must
+        copy the data through an internal buffer.  In keeping with all
+        current ATAPI devices, command packets are assumed to be exactly
+        12 bytes in length.
+
+        To permit future changes to this interface, the headers in the
+        read and write buffers contain a single character "magic" flag.
+        Currently this flag must be the character "P".
+
+*/
+
+#define PG_MAGIC        'P'
+#define PG_RESET        'Z'
+#define PG_COMMAND      'C'
+
+#define PG_MAX_DATA     32768
+
+struct pg_write_hdr {
+
+        char    magic;          /* == PG_MAGIC */
+        char    func;           /* PG_RESET or PG_COMMAND */
+        int     dlen;           /* number of bytes expected to transfer */
+        int     timeout;        /* number of seconds before timeout */
+        char    packet[12];     /* packet command */
+
+};
+
+struct pg_read_hdr {
+
+        char    magic;          /* == PG_MAGIC */
+        char    scsi;           /* "scsi" status == sense key */
+        int     dlen;           /* size of device transfer request */
+        int     duration;       /* time in seconds command took */
+        char    pad[12];        /* not used */
+
+};
+
+/* end of pg.h */