linux-kernel - [PATCH 16/17] [MIPS] Malta: remaining bits of the board support code cleanup

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Message-Id: <1201193577-4261-17-git-send-email-dmitri.vorobiev@gmail.com>
Date:	Thu, 24 Jan 2008 19:52:56 +0300
From:	Dmitri Vorobiev <dmitri.vorobiev@...il.com>
To:	ralf@...ux-mips.org, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 16/17] [MIPS] Malta: remaining bits of the board support code cleanup

This patch factors out the code, which handles the Bonito system
controller. The case of not supporting the DMA coherency is handled
separately to make the logic obvious. Besides, a couple of empty
lines added to beautify the code even further.

No functional changes introduced.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@...il.com>
---
 arch/mips/mips-boards/malta/malta_setup.c |   80 +++++++++++++++--------------
 1 files changed, 42 insertions(+), 38 deletions(-)

diff --git a/arch/mips/mips-boards/malta/malta_setup.c b/arch/mips/mips-boards/malta/malta_setup.c
index 541f4e7..2cd8f57 100644
--- a/arch/mips/mips-boards/malta/malta_setup.c
+++ b/arch/mips/mips-boards/malta/malta_setup.c
@@ -1,6 +1,7 @@
 /*
  * Carsten Langgaard, carstenl@...s.com
  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
+ * Copyright (C) Dmitri Vorobiev
  *
  *  This program is free software; you can distribute it and/or modify it
  *  under the terms of the GNU General Public License (Version 2) as
@@ -145,6 +146,41 @@ static void __init screen_info_setup(void)
 }
 #endif
 
+static void __init bonito_quirks_setup(void)
+{
+	char *argptr;
+
+	argptr = prom_getcmdline();
+	if (strstr(argptr, "debug")) {
+		BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE;
+		printk(KERN_INFO "Enabled Bonito debug mode\n");
+	} else
+		BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE;
+
+#ifdef CONFIG_DMA_COHERENT
+	if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) {
+		BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN;
+		printk(KERN_INFO "Enabled Bonito CPU coherency\n");
+
+		argptr = prom_getcmdline();
+		if (strstr(argptr, "iobcuncached")) {
+			BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN;
+			BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
+				~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
+					BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
+			printk(KERN_INFO "Disabled Bonito IOBC coherency\n");
+		} else {
+			BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN;
+			BONITO_PCIMEMBASECFG |=
+				(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
+					BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
+			printk(KERN_INFO "Enabled Bonito IOBC coherency\n");
+		}
+	} else
+		panic("Hardware DMA cache coherency not supported");
+#endif
+}
+
 void __init plat_mem_setup(void)
 {
 	unsigned int i;
@@ -164,54 +200,22 @@ void __init plat_mem_setup(void)
 	kgdb_config();
 #endif
 
-	if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO) {
-		char *argptr;
-
-		argptr = prom_getcmdline();
-		if (strstr(argptr, "debug")) {
-			BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE;
-			printk("Enabled Bonito debug mode\n");
-		}
-		else
-			BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE;
-
 #ifdef CONFIG_DMA_COHERENT
-		if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) {
-			BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN;
-			printk("Enabled Bonito CPU coherency\n");
-
-			argptr = prom_getcmdline();
-			if (strstr(argptr, "iobcuncached")) {
-				BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN;
-				BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
-					~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
-					  BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
-				printk("Disabled Bonito IOBC coherency\n");
-			}
-			else {
-				BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN;
-				BONITO_PCIMEMBASECFG |=
-					(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
-					 BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
-				printk("Enabled Bonito IOBC coherency\n");
-			}
-		}
-		else
-			panic("Hardware DMA cache coherency not supported");
-
-#endif
-	}
-#ifdef CONFIG_DMA_COHERENT
-	else
+	if (mips_revision_sconid != MIPS_REVISION_SCON_BONITO)
 		panic("Hardware DMA cache coherency not supported");
 #endif
 
+	if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO)
+		bonito_quirks_setup();
+
 #ifdef CONFIG_BLK_DEV_IDE
 	pci_clock_check();
 #endif
+
 #ifdef CONFIG_BLK_DEV_FD
 	fd_activate();
 #endif
+
 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
 	screen_info_setup();
 #endif
-- 
1.5.3

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