net/memac_phy: reuse driver for little endian SoCs

The memac for PHY management on little endian SoCs is similar on big
endian SoCs, so we modify the driver by using I/O accessor function to
handle the endianness, so the driver can be reused on little endian
SoCs, we introduce CONFIG_SYS_MEMAC_LITTLE_ENDIAN for little endian
SoCs, if the CONFIG_SYS_MEMAC_LITTLE_ENDIAN is defined, the I/O access
is little endian, if not, the I/O access is big endian. Move fsl_memac.h
out of powerpc include.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>

3 files changed, 43 insertions, 23 deletions

diff --git a/drivers/net/fm/eth.c b/drivers/net/fm/eth.c
index 55e76a7d88..d7a37f39a8 100644
--- a/drivers/net/fm/eth.c
+++ b/drivers/net/fm/eth.c
@@ -15,7 +15,7 @@
 #include <phy.h>
 #include <asm/fsl_dtsec.h>
 #include <asm/fsl_tgec.h>
-#include <asm/fsl_memac.h>
+#include <fsl_memac.h>
 
 #include "fm.h"
 
diff --git a/drivers/net/fm/memac.c b/drivers/net/fm/memac.c
index 60e898cd7c..81a64bf656 100644
--- a/drivers/net/fm/memac.c
+++ b/drivers/net/fm/memac.c
@@ -12,7 +12,7 @@
 #include <phy.h>
 #include <asm/types.h>
 #include <asm/io.h>
-#include <asm/fsl_memac.h>
+#include <fsl_memac.h>
 
 #include "fm.h"
 
diff --git a/drivers/net/fm/memac_phy.c b/drivers/net/fm/memac_phy.c
index a155d8930b..4ab78e6c25 100644
--- a/drivers/net/fm/memac_phy.c
+++ b/drivers/net/fm/memac_phy.c
@@ -10,9 +10,28 @@
 #include <miiphy.h>
 #include <phy.h>
 #include <asm/io.h>
-#include <asm/fsl_memac.h>
+#include <fsl_memac.h>
 #include <fm_eth.h>
 
+#ifdef CONFIG_SYS_MEMAC_LITTLE_ENDIAN
+#define memac_out_32(a, v)	out_le32(a, v)
+#define memac_clrbits_32(a, v)	clrbits_le32(a, v)
+#define memac_setbits_32(a, v)	setbits_le32(a, v)
+#else
+#define memac_out_32(a, v)	out_be32(a, v)
+#define memac_clrbits_32(a, v)	clrbits_be32(a, v)
+#define memac_setbits_32(a, v)	setbits_be32(a, v)
+#endif
+
+static u32 memac_in_32(u32 *reg)
+{
+#ifdef CONFIG_SYS_MEMAC_LITTLE_ENDIAN
+	return in_le32(reg);
+#else
+	return in_be32(reg);
+#endif
+}
+
 /*
  * Write value to the PHY for this device to the register at regnum, waiting
  * until the write is done before it returns.  All PHY configuration has to be
@@ -28,31 +47,31 @@ int memac_mdio_write(struct mii_dev *bus, int port_addr, int dev_addr,
 	if (dev_addr == MDIO_DEVAD_NONE) {
 		c45 = 0; /* clause 22 */
 		dev_addr = regnum & 0x1f;
-		clrbits_be32(&regs->mdio_stat, MDIO_STAT_ENC);
+		memac_clrbits_32(&regs->mdio_stat, MDIO_STAT_ENC);
 	} else
-		setbits_be32(&regs->mdio_stat, MDIO_STAT_ENC);
+		memac_setbits_32(&regs->mdio_stat, MDIO_STAT_ENC);
 
 	/* Wait till the bus is free */
-	while ((in_be32(&regs->mdio_stat)) & MDIO_STAT_BSY)
+	while ((memac_in_32(&regs->mdio_stat)) & MDIO_STAT_BSY)
 		;
 
 	/* Set the port and dev addr */
 	mdio_ctl = MDIO_CTL_PORT_ADDR(port_addr) | MDIO_CTL_DEV_ADDR(dev_addr);
-	out_be32(&regs->mdio_ctl, mdio_ctl);
+	memac_out_32(&regs->mdio_ctl, mdio_ctl);
 
 	/* Set the register address */
 	if (c45)
-		out_be32(&regs->mdio_addr, regnum & 0xffff);
+		memac_out_32(&regs->mdio_addr, regnum & 0xffff);
 
 	/* Wait till the bus is free */
-	while ((in_be32(&regs->mdio_stat)) & MDIO_STAT_BSY)
+	while ((memac_in_32(&regs->mdio_stat)) & MDIO_STAT_BSY)
 		;
 
 	/* Write the value to the register */
-	out_be32(&regs->mdio_data, MDIO_DATA(value));
+	memac_out_32(&regs->mdio_data, MDIO_DATA(value));
 
 	/* Wait till the MDIO write is complete */
-	while ((in_be32(&regs->mdio_data)) & MDIO_DATA_BSY)
+	while ((memac_in_32(&regs->mdio_data)) & MDIO_DATA_BSY)
 		;
 
 	return 0;
@@ -75,39 +94,39 @@ int memac_mdio_read(struct mii_dev *bus, int port_addr, int dev_addr,
 			return 0xffff;
 		c45 = 0; /* clause 22 */
 		dev_addr = regnum & 0x1f;
-		clrbits_be32(&regs->mdio_stat, MDIO_STAT_ENC);
+		memac_clrbits_32(&regs->mdio_stat, MDIO_STAT_ENC);
 	} else
-		setbits_be32(&regs->mdio_stat, MDIO_STAT_ENC);
+		memac_setbits_32(&regs->mdio_stat, MDIO_STAT_ENC);
 
 	/* Wait till the bus is free */
-	while ((in_be32(&regs->mdio_stat)) & MDIO_STAT_BSY)
+	while ((memac_in_32(&regs->mdio_stat)) & MDIO_STAT_BSY)
 		;
 
 	/* Set the Port and Device Addrs */
 	mdio_ctl = MDIO_CTL_PORT_ADDR(port_addr) | MDIO_CTL_DEV_ADDR(dev_addr);
-	out_be32(&regs->mdio_ctl, mdio_ctl);
+	memac_out_32(&regs->mdio_ctl, mdio_ctl);
 
 	/* Set the register address */
 	if (c45)
-		out_be32(&regs->mdio_addr, regnum & 0xffff);
+		memac_out_32(&regs->mdio_addr, regnum & 0xffff);
 
 	/* Wait till the bus is free */
-	while ((in_be32(&regs->mdio_stat)) & MDIO_STAT_BSY)
+	while ((memac_in_32(&regs->mdio_stat)) & MDIO_STAT_BSY)
 		;
 
 	/* Initiate the read */
 	mdio_ctl |= MDIO_CTL_READ;
-	out_be32(&regs->mdio_ctl, mdio_ctl);
+	memac_out_32(&regs->mdio_ctl, mdio_ctl);
 
 	/* Wait till the MDIO write is complete */
-	while ((in_be32(&regs->mdio_data)) & MDIO_DATA_BSY)
+	while ((memac_in_32(&regs->mdio_data)) & MDIO_DATA_BSY)
 		;
 
 	/* Return all Fs if nothing was there */
-	if (in_be32(&regs->mdio_stat) & MDIO_STAT_RD_ER)
+	if (memac_in_32(&regs->mdio_stat) & MDIO_STAT_RD_ER)
 		return 0xffff;
 
-	return in_be32(&regs->mdio_data) & 0xffff;
+	return memac_in_32(&regs->mdio_data) & 0xffff;
 }
 
 int memac_mdio_reset(struct mii_dev *bus)
@@ -143,8 +162,9 @@ int fm_memac_mdio_init(bd_t *bis, struct memac_mdio_info *info)
 	 * like T2080QDS, this bit default is '0', which leads to MDIO failure
 	 * on XAUI PHY, so set this bit definitely.
 	 */
-	setbits_be32(&((struct memac_mdio_controller *)info->regs)->mdio_stat,
-		     MDIO_STAT_CLKDIV(258) | MDIO_STAT_NEG);
+	memac_setbits_32(
+		&((struct memac_mdio_controller *)info->regs)->mdio_stat,
+		MDIO_STAT_CLKDIV(258) | MDIO_STAT_NEG);
 
 	return mdio_register(bus);
 }