[U-Boot] [PATCH V4 1/4] ide: add configuration CONFIG_IDE_SWAP_IO

Albert Aribaud albert.aribaud at free.fr
Tue Jul 13 13:40:43 CEST 2010 

This configuration option replaces a complex conditional
in cmd_ide.c with an explicit define to be added to SoC or
board configs.

Signed-off-by: Albert Aribaud <albert.aribaud at free.fr>
---
This patch set introduces CONFIG_IDE_SWAP_IO as suggested by
Wolfgang Denk, adds orion5x support to cmd_ide.c and adds IDE
support to edminiv2.

Patchset history:

V1: Initial 4-patch set -- not cleanly submitted (does
    not appear on gmane for instance) and contained some
    unrelated changes.

V2: Slimmed down to 3 patches and removed unrelated
    changes.

V3: Back to 4 patches (cmd_ide improvement, driver addition,
    cmd_ide support for orion, edminiv2 support for sata);
    made initialization code reuseable as a block driver ;
    moved to C structures; commented some constants.
    
V4: Reordered objects alphabetically in drivers/block/Makefile.
    Shortened mv_sata to mvsata.
    Removed volatile qualifier in mvsata port structure.
    Moved port pointer definition from SoC to board code.
    Removed unrelated changes.

 arch/powerpc/include/asm/config.h |    3 +++
 common/cmd_ide.c                  |   18 +++++++++---------
 doc/README.PXA_CF                 |    8 ++++++++
 include/configs/ap325rxa.h        |    1 +
 include/configs/ms7720se.h        |    1 +
 include/configs/r2dplus.h         |    1 +
 include/configs/r7780mp.h         |    1 +
 7 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/arch/powerpc/include/asm/config.h b/arch/powerpc/include/asm/config.h
index fc3facb..371989d 100644
--- a/arch/powerpc/include/asm/config.h
+++ b/arch/powerpc/include/asm/config.h
@@ -76,4 +76,7 @@
 /* Relocation to SDRAM works on all PPC boards */
 #define CONFIG_RELOC_FIXUP_WORKS
 
+/* All PPC boards must swap IDE bytes */
+#define CONFIG_IDE_SWAP_IO
+
 #endif /* _ASM_CONFIG_H_ */
diff --git a/common/cmd_ide.c b/common/cmd_ide.c
index d486697..9292a5b 100644
--- a/common/cmd_ide.c
+++ b/common/cmd_ide.c
@@ -853,7 +853,7 @@ input_swap_data(int dev, ulong *sect_buf, int words)
 #endif	/* __LITTLE_ENDIAN || CONFIG_AU1X00 */
 
 
-#if defined(__PPC__) || defined(CONFIG_PXA_PCMCIA) || defined(CONFIG_SH)
+#if defined(CONFIG_IDE_SWAP_IO)
 static void
 output_data(int dev, ulong *sect_buf, int words)
 {
@@ -897,15 +897,15 @@ output_data(int dev, ulong *sect_buf, int words)
 	}
 #endif
 }
-#else	/* ! __PPC__ */
+#else	/* ! CONFIG_IDE_SWAP_IO */
 static void
 output_data(int dev, ulong *sect_buf, int words)
 {
 	outsw(ATA_CURR_BASE(dev)+ATA_DATA_REG, sect_buf, words<<1);
 }
-#endif	/* __PPC__ */
+#endif	/* CONFIG_IDE_SWAP_IO */
 
-#if defined(__PPC__) || defined(CONFIG_PXA_PCMCIA) || defined(CONFIG_SH)
+#if defined(CONFIG_IDE_SWAP_IO)
 static void
 input_data(int dev, ulong *sect_buf, int words)
 {
@@ -955,14 +955,14 @@ input_data(int dev, ulong *sect_buf, int words)
 	}
 #endif
 }
-#else	/* ! __PPC__ */
+#else	/* ! CONFIG_IDE_SWAP_IO */
 static void
 input_data(int dev, ulong *sect_buf, int words)
 {
 	insw(ATA_CURR_BASE(dev)+ATA_DATA_REG, sect_buf, words << 1);
 }
 
-#endif	/* __PPC__ */
+#endif	/* CONFIG_IDE_SWAP_IO */
 
 /* -------------------------------------------------------------------------
  */
@@ -1579,7 +1579,7 @@ int ide_device_present(int dev)
  * ATAPI Support
  */
 
-#if defined(__PPC__) || defined(CONFIG_PXA_PCMCIA)
+#if defined(CONFIG_IDE_SWAP_IO)
 /* since ATAPI may use commands with not 4 bytes alligned length
  * we have our own transfer functions, 2 bytes alligned */
 static void
@@ -1646,7 +1646,7 @@ input_data_shorts(int dev, ushort *sect_buf, int shorts)
 #endif
 }
 
-#else	/* ! __PPC__ */
+#else	/* ! CONFIG_IDE_SWAP_IO */
 static void
 output_data_shorts(int dev, ushort *sect_buf, int shorts)
 {
@@ -1659,7 +1659,7 @@ input_data_shorts(int dev, ushort *sect_buf, int shorts)
 	insw(ATA_CURR_BASE(dev)+ATA_DATA_REG, sect_buf, shorts);
 }
 
-#endif	/* __PPC__ */
+#endif	/* CONFIG_IDE_SWAP_IO */
 
 /*
  * Wait until (Status & mask) == res, or timeout (in ms)
diff --git a/doc/README.PXA_CF b/doc/README.PXA_CF
index 6a0f236..1d76b32 100644
--- a/doc/README.PXA_CF
+++ b/doc/README.PXA_CF
@@ -6,6 +6,14 @@ follow the connections of the standard lubbock. Anyway just the block
 marked memory configuration should be touched since the other parameters
 are imposed by the PXA architecture.
 
+EDIT 2010-07-01: in common/cmd_ide.c, having CONFIG_PXA_PCMCIA defined
+would cause looping on inw()/outw() rather than using insw()/outsw(),
+thus making sure IDE / ATA bytes are properly swapped. This behaviour
+is now controlled by CONFIG_IDE_SWAP_IO, therefore PXA boards with
+PCMCIA should #define CONFIG_IDE_SWAP_IO.
+
+#define CONFIG_IDE_SWAP_IO
+
 #define CONFIG_PXA_PCMCIA 1
 #define CONFIG_PXA_IDE 1
 
diff --git a/include/configs/ap325rxa.h b/include/configs/ap325rxa.h
index 70dd47e..80a5797 100644
--- a/include/configs/ap325rxa.h
+++ b/include/configs/ap325rxa.h
@@ -138,6 +138,7 @@
 #define CONFIG_SYS_ATA_DATA_OFFSET	0x200	/* data reg offset */
 #define CONFIG_SYS_ATA_REG_OFFSET	0x200	/* reg offset */
 #define CONFIG_SYS_ATA_ALT_OFFSET	0x210	/* alternate register offset */
+#define CONFIG_IDE_SWAP_IO
 
 /* if you use all NOR Flash , you change dip-switch. Please see Manual. */
 #define CONFIG_SYS_MAX_FLASH_BANKS	1
diff --git a/include/configs/ms7720se.h b/include/configs/ms7720se.h
index ba0a3f8..0ea3527 100644
--- a/include/configs/ms7720se.h
+++ b/include/configs/ms7720se.h
@@ -122,5 +122,6 @@
 #define CONFIG_SYS_ATA_DATA_OFFSET	0		/* data reg offset */
 #define CONFIG_SYS_ATA_REG_OFFSET	0		/* reg offset */
 #define CONFIG_SYS_ATA_ALT_OFFSET	0x200		/* alternate register offset */
+#define CONFIG_IDE_SWAP_IO
 
 #endif	/* __MS7720SE_H */
diff --git a/include/configs/r2dplus.h b/include/configs/r2dplus.h
index 8931b97..955f3ff 100644
--- a/include/configs/r2dplus.h
+++ b/include/configs/r2dplus.h
@@ -96,6 +96,7 @@
 #define CONFIG_SYS_ATA_DATA_OFFSET	0x1000	/* data reg offset */
 #define CONFIG_SYS_ATA_REG_OFFSET	0x1000	/* reg offset */
 #define CONFIG_SYS_ATA_ALT_OFFSET	0x800	/* alternate register offset */
+#define CONFIG_IDE_SWAP_IO
 
 /*
  * SuperH PCI Bridge Configration
diff --git a/include/configs/r7780mp.h b/include/configs/r7780mp.h
index 71c570e..3afe93a 100644
--- a/include/configs/r7780mp.h
+++ b/include/configs/r7780mp.h
@@ -171,6 +171,7 @@
 #define CONFIG_SYS_ATA_DATA_OFFSET     0x1000          /* data reg offset */
 #define CONFIG_SYS_ATA_REG_OFFSET      0x1000          /* reg offset */
 #define CONFIG_SYS_ATA_ALT_OFFSET      0x800           /* alternate register offset */
+#define CONFIG_IDE_SWAP_IO
 #endif /* CONFIG_CMD_IDE */
 
 #endif /* __R7780RP_H */
-- 
1.6.4.4

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