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, 78 insertions, 0 deletions

diff --git a/drivers/scsi/pcmcia/nsp_message.c b/drivers/scsi/pcmcia/nsp_message.c
new file mode 100644
index 000000000000..d7057737ff34
--- /dev/null
+++ b/drivers/scsi/pcmcia/nsp_message.c
@@ -0,0 +1,78 @@
+/*==========================================================================
+  NinjaSCSI-3 message handler
+      By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
+
+   This software may be used and distributed according to the terms of
+   the GNU General Public License.
+ */
+
+/* $Id: nsp_message.c,v 1.6 2003/07/26 14:21:09 elca Exp $ */
+
+static void nsp_message_in(Scsi_Cmnd *SCpnt)
+{
+        unsigned int  base = SCpnt->device->host->io_port;
+        nsp_hw_data  *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
+        unsigned char data_reg, control_reg;
+        int           ret, len;
+
+        /*
+         * XXX: NSP QUIRK
+         * NSP invoke interrupts only in the case of scsi phase changes,
+         * therefore we should poll the scsi phase here to catch 
+         * the next "msg in" if exists (no scsi phase changes).
+         */
+        ret = 16;
+        len = 0;
+
+        nsp_dbg(NSP_DEBUG_MSGINOCCUR, "msgin loop");
+        do {
+                /* read data */
+                data_reg = nsp_index_read(base, SCSIDATAIN);
+
+                /* assert ACK */
+                control_reg = nsp_index_read(base, SCSIBUSCTRL);
+                control_reg |= SCSI_ACK;
+                nsp_index_write(base, SCSIBUSCTRL, control_reg);
+                nsp_negate_signal(SCpnt, BUSMON_REQ, "msgin<REQ>");
+
+                data->MsgBuffer[len] = data_reg; len++;
+
+                /* deassert ACK */
+                control_reg =  nsp_index_read(base, SCSIBUSCTRL);
+                control_reg &= ~SCSI_ACK;
+                nsp_index_write(base, SCSIBUSCTRL, control_reg);
+
+                /* catch a next signal */
+                ret = nsp_expect_signal(SCpnt, BUSPHASE_MESSAGE_IN, BUSMON_REQ);
+        } while (ret > 0 && MSGBUF_SIZE > len);
+
+        data->MsgLen = len;
+
+}
+
+static void nsp_message_out(Scsi_Cmnd *SCpnt)
+{
+        nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
+        int ret = 1;
+        int len = data->MsgLen;
+
+        /*
+         * XXX: NSP QUIRK
+         * NSP invoke interrupts only in the case of scsi phase changes,
+         * therefore we should poll the scsi phase here to catch 
+         * the next "msg out" if exists (no scsi phase changes).
+         */
+
+        nsp_dbg(NSP_DEBUG_MSGOUTOCCUR, "msgout loop");
+        do {
+                if (nsp_xfer(SCpnt, BUSPHASE_MESSAGE_OUT)) {
+                        nsp_msg(KERN_DEBUG, "msgout: xfer short");
+                }
+
+                /* catch a next signal */
+                ret = nsp_expect_signal(SCpnt, BUSPHASE_MESSAGE_OUT, BUSMON_REQ);
+        } while (ret > 0 && len-- > 0);
+
+}
+
+/* end */