[U-Boot] [PATCH 15/28] net/memac_phy: reuse driver for little endian SoCs

York Sun yorksun at freescale.com
Thu Mar 19 17:45:46 CET 2015 

From: Shaohui Xie <Shaohui.Xie at freescale.com>

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 at freescale.com>
CC: Joe Hershberger <joe.hershberger at ni.com>
---
 arch/arm/include/asm/arch-fsl-lsch3/config.h      |    1 +
 drivers/net/Makefile                              |    1 +
 drivers/net/fm/eth.c                              |    2 +-
 drivers/net/fm/memac.c                            |    2 +-
 drivers/net/fm/memac_phy.c                        |   62 ++++++++++++++-------
 drivers/net/vsc9953.c                             |    2 +-
 {arch/powerpc/include/asm => include}/fsl_memac.h |    0
 7 files changed, 46 insertions(+), 24 deletions(-)
 rename {arch/powerpc/include/asm => include}/fsl_memac.h (100%)

diff --git a/arch/arm/include/asm/arch-fsl-lsch3/config.h b/arch/arm/include/asm/arch-fsl-lsch3/config.h
index 98db1ef..684c70f 100644
--- a/arch/arm/include/asm/arch-fsl-lsch3/config.h
+++ b/arch/arm/include/asm/arch-fsl-lsch3/config.h
@@ -109,6 +109,7 @@
 
 /* IFC */
 #define CONFIG_SYS_FSL_IFC_LE
+#define CONFIG_SYS_MEMAC_LITTLE_ENDIAN
 
 /* PCIe */
 #define CONFIG_SYS_PCIE1_ADDR			(CONFIG_SYS_IMMR + 0x2400000)
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 5497934..d871093 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -66,4 +66,5 @@ obj-$(CONFIG_XILINX_LL_TEMAC) += xilinx_ll_temac.o xilinx_ll_temac_mdio.o \
 obj-$(CONFIG_ZYNQ_GEM) += zynq_gem.o
 obj-$(CONFIG_FSL_MC_ENET) += fsl-mc/
 obj-$(CONFIG_FSL_MC_ENET) += ldpaa_eth/
+obj-$(CONFIG_FSL_MEMAC) += fm/memac_phy.o
 obj-$(CONFIG_VSC9953) += vsc9953.o
diff --git a/drivers/net/fm/eth.c b/drivers/net/fm/eth.c
index 1d1089d..a7a5c69 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 60e898c..81a64bf 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 a155d89..4ab78e6 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);
 }
diff --git a/drivers/net/vsc9953.c b/drivers/net/vsc9953.c
index 9fc3c18..fed7358 100644
--- a/drivers/net/vsc9953.c
+++ b/drivers/net/vsc9953.c
@@ -9,7 +9,7 @@
 #include <asm/io.h>
 #include <asm/fsl_serdes.h>
 #include <fm_eth.h>
-#include <asm/fsl_memac.h>
+#include <fsl_memac.h>
 #include <vsc9953.h>
 
 static struct vsc9953_info vsc9953_l2sw = {
diff --git a/arch/powerpc/include/asm/fsl_memac.h b/include/fsl_memac.h
similarity index 100%
rename from arch/powerpc/include/asm/fsl_memac.h
rename to include/fsl_memac.h
-- 
1.7.9.5

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