linux-kernel - [PATCH 02/23] floppy: add references to 82077's extra registers

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Date:   Tue, 31 Mar 2020 11:40:33 +0200
From:   Willy Tarreau <w@....eu>
To:     Denis Efremov <efremov@...ux.com>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, Willy Tarreau <w@....eu>
Subject: [PATCH 02/23] floppy: add references to 82077's extra registers

This controller provides extra status registers SRA and SRB as well
as a tape drive register (TDR) and a data rate select register (DSR),
which are referenced in the sparc port, so let's have their symbolic
definitions centralized.

Signed-off-by: Willy Tarreau <w@....eu>
---
 include/uapi/linux/fdreg.h | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/include/uapi/linux/fdreg.h b/include/uapi/linux/fdreg.h
index 1318881954e1..10d33632939d 100644
--- a/include/uapi/linux/fdreg.h
+++ b/include/uapi/linux/fdreg.h
@@ -7,13 +7,23 @@
  * Handbook", Sanches and Canton.
  */
 
+/* 82077's auxiliary status registers A & B (R) */
+#define FD_SRA		0
+#define FD_SRB		1
+
+/* Digital Output Register */
+#define FD_DOR		2
+
+/* 82077's tape drive register (R/W) */
+#define FD_TDR		3
+
+/* 82077's data rate select register (W) */
+#define FD_DSR		4
+
 /* Fd controller regs. S&C, about page 340 */
 #define FD_STATUS	4
 #define FD_DATA		5
 
-/* Digital Output Register */
-#define FD_DOR		2
-
 /* Digital Input Register (read) */
 #define FD_DIR		7
 
-- 
2.20.1