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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-02-18 07:28:37 -0800
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-02-18 07:28:37 -0800
commit65d2918e716afb89359cfa59734d76c1ff8700cb (patch)
tree4685404f96642243d62c3a1a823340913d087090 /arch/arm/include/debug/ks8695.S
parentbf40e5561fd288a505d5d8d8bf45eef96fe7253d (diff)
parent338d00cfef07d74a072f96821c64b20f98517d72 (diff)
downloadlwn-65d2918e716afb89359cfa59734d76c1ff8700cb.tar.gz
lwn-65d2918e716afb89359cfa59734d76c1ff8700cb.zip
Merge branch 'cleanups'
Merge cleanups requested by Linus. * cleanups: (3 commits) pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit nfs: Can call nfs_clear_page_commit() instead nfs: Provide and use helper functions for marking a page as unstable
Diffstat (limited to 'arch/arm/include/debug/ks8695.S')
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1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/include/debug/ks8695.S b/arch/arm/include/debug/ks8695.S
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+/*
+ * arch/arm/include/debug/ks8695.S
+ *
+ * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
+ * Copyright (C) 2006 Simtec Electronics
+ *
+ * KS8695 - Debug macros
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define KS8695_UART_PA 0x03ffe000
+#define KS8695_UART_VA 0xf00fe000
+#define KS8695_URTH (0x04)
+#define KS8695_URLS (0x14)
+#define URLS_URTE (1 << 6)
+#define URLS_URTHRE (1 << 5)
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, =KS8695_UART_PA @ physical base address
+ ldr \rv, =KS8695_UART_VA @ virtual base address
+ .endm
+
+ .macro senduart, rd, rx
+ str \rd, [\rx, #KS8695_URTH] @ Write to Transmit Holding Register
+ .endm
+
+ .macro busyuart, rd, rx
+1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
+ tst \rd, #URLS_URTE @ Holding & Shift registers empty?
+ beq 1001b
+ .endm
+
+ .macro waituart, rd, rx
+1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
+ tst \rd, #URLS_URTHRE @ Holding Register empty?
+ beq 1001b
+ .endm