From patchwork Sat Mar 21 17:04:56 2020
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X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244052
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:04:56 +0100
Subject: [PATCH V2 01/13] net: smc911x: Remove pkt_data_{push,pull}
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-2-marek.vasut+renesas@gmail.com>

These functions are never used and are likely a pre-DM remnant
from times long past, just remove them.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: No change
---
 drivers/net/smc911x.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 257b0385c2..24b4eaeb3f 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -13,11 +13,6 @@
 
 #include "smc911x.h"
 
-u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
-	__attribute__ ((weak, alias ("smc911x_reg_read")));
-void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
-	__attribute__ ((weak, alias ("smc911x_reg_write")));
-
 static void smc911x_handle_mac_address(struct eth_device *dev)
 {
 	unsigned long addrh, addrl;
@@ -157,7 +152,7 @@ static int smc911x_send(struct eth_device *dev, void *packet, int length)
 	tmplen = (length + 3) / 4;
 
 	while (tmplen--)
-		pkt_data_push(dev, TX_DATA_FIFO, *data++);
+		smc911x_reg_write(dev, TX_DATA_FIFO, *data++);
 
 	/* wait for transmission */
 	while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
@@ -203,7 +198,7 @@ static int smc911x_rx(struct eth_device *dev)
 
 		tmplen = (pktlen + 3) / 4;
 		while (tmplen--)
-			*data++ = pkt_data_pull(dev, RX_DATA_FIFO);
+			*data++ = smc911x_reg_read(dev, RX_DATA_FIFO);
 
 		if (status & RX_STS_ES)
 			printf(DRIVERNAME

From patchwork Sat Mar 21 17:04:57 2020
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X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244053
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:04:57 +0100
Subject: [PATCH V2 02/13] net: smc911x: Replace malloc()+memset() with calloc()
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-3-marek.vasut+renesas@gmail.com>

Replace combination of malloc()+memset() with calloc() as the behavior
is exactly the same and the amount of code is reduced.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: - Use kzalloc()
    - Return -ENOMEM on alloc fail
---
 drivers/net/smc911x.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 24b4eaeb3f..9a2a0f4435 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -242,11 +242,9 @@ int smc911x_initialize(u8 dev_num, int base_addr)
 	unsigned long addrl, addrh;
 	struct eth_device *dev;
 
-	dev = malloc(sizeof(*dev));
-	if (!dev) {
-		return -1;
-	}
-	memset(dev, 0, sizeof(*dev));
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
 
 	dev->iobase = base_addr;
 

From patchwork Sat Mar 21 17:04:58 2020
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X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244054
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:04:58 +0100
Subject: [PATCH V2 03/13] net: smc911x: Rename smc911x_rx() to smc911x_recv()
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-4-marek.vasut+renesas@gmail.com>

Rename the function to keep the naming scheme consistent,
no functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: No change
---
 drivers/net/smc911x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 9a2a0f4435..cbd6cb800a 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -184,7 +184,7 @@ static void smc911x_halt(struct eth_device *dev)
 	smc911x_handle_mac_address(dev);
 }
 
-static int smc911x_rx(struct eth_device *dev)
+static int smc911x_recv(struct eth_device *dev)
 {
 	u32 *data = (u32 *)net_rx_packets[0];
 	u32 pktlen, tmplen;
@@ -269,7 +269,7 @@ int smc911x_initialize(u8 dev_num, int base_addr)
 	dev->init = smc911x_init;
 	dev->halt = smc911x_halt;
 	dev->send = smc911x_send;
-	dev->recv = smc911x_rx;
+	dev->recv = smc911x_recv;
 	sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
 
 	eth_register(dev);

From patchwork Sat Mar 21 17:04:59 2020
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X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244055
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:04:59 +0100
Subject: [PATCH V2 04/13] net: smc911x: Invert the logic in
 smc911x_miiphy_{read, write}()
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-5-marek.vasut+renesas@gmail.com>

Invert the logic in the aforementioned functions to reduce indent,
no functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: No change
---
 drivers/net/smc911x.c | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index cbd6cb800a..01358a3878 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -216,24 +216,29 @@ static int smc911x_recv(struct eth_device *dev)
 static int smc911x_miiphy_read(struct mii_dev *bus, int phy, int devad,
 			       int reg)
 {
-	u16 val = 0;
 	struct eth_device *dev = eth_get_dev_by_name(bus->name);
-	if (dev) {
-		int retval = smc911x_eth_phy_read(dev, phy, reg, &val);
-		if (retval < 0)
-			return retval;
-		return val;
-	}
-	return -ENODEV;
+	u16 val = 0;
+	int ret;
+
+	if (!dev)
+		return -ENODEV;
+
+	ret = smc911x_eth_phy_read(dev, phy, reg, &val);
+	if (ret < 0)
+		return ret;
+
+	return val;
 }
 /* wrapper for smc911x_eth_phy_write */
 static int smc911x_miiphy_write(struct mii_dev *bus, int phy, int devad,
 				int reg, u16 val)
 {
 	struct eth_device *dev = eth_get_dev_by_name(bus->name);
-	if (dev)
-		return smc911x_eth_phy_write(dev, phy, reg, val);
-	return -ENODEV;
+
+	if (!dev)
+		return -ENODEV;
+
+	return smc911x_eth_phy_write(dev, phy, reg, val);
 }
 #endif
 

From patchwork Sat Mar 21 17:05:00 2020
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X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244056
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:00 +0100
Subject: [PATCH V2 05/13] net: smc911x: Fix potential memleak() in init fail
 path
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-6-marek.vasut+renesas@gmail.com>

Fix memleak in the init fail path, where if allocation or registration
of MDIO bus fails, then ethernet interface is not unregistered and the
private data are not freed, yet the probe function reports a failure.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: No change
---
 drivers/net/smc911x.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 01358a3878..4eebf51b36 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -282,15 +282,23 @@ int smc911x_initialize(u8 dev_num, int base_addr)
 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 	int retval;
 	struct mii_dev *mdiodev = mdio_alloc();
-	if (!mdiodev)
+	if (!mdiodev) {
+		eth_unregister(dev);
+		free(dev);
 		return -ENOMEM;
+	}
+
 	strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
 	mdiodev->read = smc911x_miiphy_read;
 	mdiodev->write = smc911x_miiphy_write;
 
 	retval = mdio_register(mdiodev);
-	if (retval < 0)
+	if (retval < 0) {
+		mdio_free(mdiodev);
+		eth_unregister(dev);
+		free(dev);
 		return retval;
+	}
 #endif
 
 	return 1;

From patchwork Sat Mar 21 17:05:01 2020
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X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244057
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:01 +0100
Subject: [PATCH V2 06/13] net: smc911x: Pull MII registration into separate
 function
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-7-marek.vasut+renesas@gmail.com>

Pull the MII interface registration into separate function to avoid the
ifdeffery in smc911x_initialize(). Moreover, adjust the fail path such
that we use goto labels.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: New patch
---
 drivers/net/smc911x.c | 64 +++++++++++++++++++++++++++----------------
 1 file changed, 40 insertions(+), 24 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 4eebf51b36..ee16eae203 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -240,12 +240,39 @@ static int smc911x_miiphy_write(struct mii_dev *bus, int phy, int devad,
 
 	return smc911x_eth_phy_write(dev, phy, reg, val);
 }
+
+static int smc911x_initialize_mii(struct eth_device *dev)
+{
+	struct mii_dev *mdiodev = mdio_alloc();
+	int ret;
+
+	if (!mdiodev)
+		return -ENOMEM;
+
+	strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
+	mdiodev->read = smc911x_miiphy_read;
+	mdiodev->write = smc911x_miiphy_write;
+
+	ret = mdio_register(mdiodev);
+	if (ret < 0) {
+		mdio_free(mdiodev);
+		return ret;
+	}
+
+	return 0;
+}
+#else
+static int smc911x_initialize_mii(struct eth_device *dev)
+{
+	return 0;
+}
 #endif
 
 int smc911x_initialize(u8 dev_num, int base_addr)
 {
 	unsigned long addrl, addrh;
 	struct eth_device *dev;
+	int ret;
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (!dev)
@@ -254,9 +281,10 @@ int smc911x_initialize(u8 dev_num, int base_addr)
 	dev->iobase = base_addr;
 
 	/* Try to detect chip. Will fail if not present. */
-	if (smc911x_detect_chip(dev)) {
-		free(dev);
-		return 0;
+	ret = smc911x_detect_chip(dev);
+	if (ret) {
+		ret = 0;	/* Card not detected is not an error */
+		goto err_detect;
 	}
 
 	addrh = smc911x_get_mac_csr(dev, ADDRH);
@@ -279,27 +307,15 @@ int smc911x_initialize(u8 dev_num, int base_addr)
 
 	eth_register(dev);
 
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-	int retval;
-	struct mii_dev *mdiodev = mdio_alloc();
-	if (!mdiodev) {
-		eth_unregister(dev);
-		free(dev);
-		return -ENOMEM;
-	}
-
-	strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
-	mdiodev->read = smc911x_miiphy_read;
-	mdiodev->write = smc911x_miiphy_write;
-
-	retval = mdio_register(mdiodev);
-	if (retval < 0) {
-		mdio_free(mdiodev);
-		eth_unregister(dev);
-		free(dev);
-		return retval;
-	}
-#endif
+	ret = smc911x_initialize_mii(dev);
+	if (ret)
+		goto err_mii;
 
 	return 1;
+
+err_mii:
+	eth_unregister(dev);
+err_detect:
+	free(dev);
+	return ret;
 }

From patchwork Sat Mar 21 17:05:02 2020
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MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244059
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:02 +0100
Subject: [PATCH V2 07/13] net: smc911x: Inline all functions from header file
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-8-marek.vasut+renesas@gmail.com>

Inline all the functions from the header file, as they are not used
outside of the driver or the standalone EEPROM example.

Note that this does introduce considerable amount of duplication in
the standalone EEPROM example, however that one has to be rewritten
anyway, roughly such that the SMC911x driver would expose DM EEPROM
interface and the standalone example would use that.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: No change
---
 drivers/net/smc911x.c                | 157 ++++++++++++++++++++++++++-
 drivers/net/smc911x.h                | 157 ---------------------------
 examples/standalone/smc911x_eeprom.c | 156 ++++++++++++++++++++++++++
 3 files changed, 312 insertions(+), 158 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index ee16eae203..583afa6347 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -10,9 +10,165 @@
 #include <malloc.h>
 #include <net.h>
 #include <miiphy.h>
+#include <linux/types.h>
 
 #include "smc911x.h"
 
+struct chip_id {
+	u16 id;
+	char *name;
+};
+
+static const struct chip_id chip_ids[] =  {
+	{ CHIP_89218, "LAN89218" },
+	{ CHIP_9115, "LAN9115" },
+	{ CHIP_9116, "LAN9116" },
+	{ CHIP_9117, "LAN9117" },
+	{ CHIP_9118, "LAN9118" },
+	{ CHIP_9211, "LAN9211" },
+	{ CHIP_9215, "LAN9215" },
+	{ CHIP_9216, "LAN9216" },
+	{ CHIP_9217, "LAN9217" },
+	{ CHIP_9218, "LAN9218" },
+	{ CHIP_9220, "LAN9220" },
+	{ CHIP_9221, "LAN9221" },
+	{ 0, NULL },
+};
+
+#define DRIVERNAME "smc911x"
+
+#if defined (CONFIG_SMC911X_32_BIT) && \
+	defined (CONFIG_SMC911X_16_BIT)
+#error "SMC911X: Only one of CONFIG_SMC911X_32_BIT and \
+	CONFIG_SMC911X_16_BIT shall be set"
+#endif
+
+#if defined (CONFIG_SMC911X_32_BIT)
+static inline u32 __smc911x_reg_read(struct eth_device *dev, u32 offset)
+{
+	return *(volatile u32*)(dev->iobase + offset);
+}
+u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+	__attribute__((weak, alias("__smc911x_reg_read")));
+
+static inline void __smc911x_reg_write(struct eth_device *dev,
+					u32 offset, u32 val)
+{
+	*(volatile u32*)(dev->iobase + offset) = val;
+}
+void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
+	__attribute__((weak, alias("__smc911x_reg_write")));
+#elif defined (CONFIG_SMC911X_16_BIT)
+static inline u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+{
+	volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
+	return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
+}
+static inline void smc911x_reg_write(struct eth_device *dev,
+					u32 offset, u32 val)
+{
+	*(volatile u16 *)(dev->iobase + offset) = (u16)val;
+	*(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);
+}
+#else
+#error "SMC911X: undefined bus width"
+#endif /* CONFIG_SMC911X_16_BIT */
+
+static u32 smc911x_get_mac_csr(struct eth_device *dev, u8 reg)
+{
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+	smc911x_reg_write(dev, MAC_CSR_CMD,
+			MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+
+	return smc911x_reg_read(dev, MAC_CSR_DATA);
+}
+
+static void smc911x_set_mac_csr(struct eth_device *dev, u8 reg, u32 data)
+{
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+	smc911x_reg_write(dev, MAC_CSR_DATA, data);
+	smc911x_reg_write(dev, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+}
+
+static int smc911x_detect_chip(struct eth_device *dev)
+{
+	unsigned long val, i;
+
+	val = smc911x_reg_read(dev, BYTE_TEST);
+	if (val == 0xffffffff) {
+		/* Special case -- no chip present */
+		return -1;
+	} else if (val != 0x87654321) {
+		printf(DRIVERNAME ": Invalid chip endian 0x%08lx\n", val);
+		return -1;
+	}
+
+	val = smc911x_reg_read(dev, ID_REV) >> 16;
+	for (i = 0; chip_ids[i].id != 0; i++) {
+		if (chip_ids[i].id == val) break;
+	}
+	if (!chip_ids[i].id) {
+		printf(DRIVERNAME ": Unknown chip ID %04lx\n", val);
+		return -1;
+	}
+
+	dev->priv = (void *)&chip_ids[i];
+
+	return 0;
+}
+
+static void smc911x_reset(struct eth_device *dev)
+{
+	int timeout;
+
+	/*
+	 *  Take out of PM setting first
+	 *  Device is already wake up if PMT_CTRL_READY bit is set
+	 */
+	if ((smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY) == 0) {
+		/* Write to the bytetest will take out of powerdown */
+		smc911x_reg_write(dev, BYTE_TEST, 0x0);
+
+		timeout = 10;
+
+		while (timeout-- &&
+			!(smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY))
+			udelay(10);
+		if (timeout < 0) {
+			printf(DRIVERNAME
+				": timeout waiting for PM restore\n");
+			return;
+		}
+	}
+
+	/* Disable interrupts */
+	smc911x_reg_write(dev, INT_EN, 0);
+
+	smc911x_reg_write(dev, HW_CFG, HW_CFG_SRST);
+
+	timeout = 1000;
+	while (timeout-- && smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
+		udelay(10);
+
+	if (timeout < 0) {
+		printf(DRIVERNAME ": reset timeout\n");
+		return;
+	}
+
+	/* Reset the FIFO level and flow control settings */
+	smc911x_set_mac_csr(dev, FLOW, FLOW_FCPT | FLOW_FCEN);
+	smc911x_reg_write(dev, AFC_CFG, 0x0050287F);
+
+	/* Set to LED outputs */
+	smc911x_reg_write(dev, GPIO_CFG, 0x70070000);
+}
+
 static void smc911x_handle_mac_address(struct eth_device *dev)
 {
 	unsigned long addrh, addrl;
@@ -117,7 +273,6 @@ static void smc911x_enable(struct eth_device *dev)
 
 	smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
 				MAC_CR_HBDIS);
-
 }
 
 static int smc911x_init(struct eth_device *dev, bd_t * bd)
diff --git a/drivers/net/smc911x.h b/drivers/net/smc911x.h
index 3145fbde2b..ce66900f4c 100644
--- a/drivers/net/smc911x.h
+++ b/drivers/net/smc911x.h
@@ -8,47 +8,6 @@
 #ifndef _SMC911X_H_
 #define _SMC911X_H_
 
-#include <linux/types.h>
-
-#define DRIVERNAME "smc911x"
-
-#if defined (CONFIG_SMC911X_32_BIT) && \
-	defined (CONFIG_SMC911X_16_BIT)
-#error "SMC911X: Only one of CONFIG_SMC911X_32_BIT and \
-	CONFIG_SMC911X_16_BIT shall be set"
-#endif
-
-#if defined (CONFIG_SMC911X_32_BIT)
-static inline u32 __smc911x_reg_read(struct eth_device *dev, u32 offset)
-{
-	return *(volatile u32*)(dev->iobase + offset);
-}
-u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
-	__attribute__((weak, alias("__smc911x_reg_read")));
-
-static inline void __smc911x_reg_write(struct eth_device *dev,
-					u32 offset, u32 val)
-{
-	*(volatile u32*)(dev->iobase + offset) = val;
-}
-void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
-	__attribute__((weak, alias("__smc911x_reg_write")));
-#elif defined (CONFIG_SMC911X_16_BIT)
-static inline u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
-{
-	volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
-	return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
-}
-static inline void smc911x_reg_write(struct eth_device *dev,
-					u32 offset, u32 val)
-{
-	*(volatile u16 *)(dev->iobase + offset) = (u16)val;
-	*(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);
-}
-#else
-#error "SMC911X: undefined bus width"
-#endif /* CONFIG_SMC911X_16_BIT */
-
 /* Below are the register offsets and bit definitions
  * of the Lan911x memory space
  */
@@ -380,120 +339,4 @@ static inline void smc911x_reg_write(struct eth_device *dev,
 #define CHIP_9220	0x9220
 #define CHIP_9221	0x9221
 
-struct chip_id {
-	u16 id;
-	char *name;
-};
-
-static const struct chip_id chip_ids[] =  {
-	{ CHIP_89218, "LAN89218" },
-	{ CHIP_9115, "LAN9115" },
-	{ CHIP_9116, "LAN9116" },
-	{ CHIP_9117, "LAN9117" },
-	{ CHIP_9118, "LAN9118" },
-	{ CHIP_9211, "LAN9211" },
-	{ CHIP_9215, "LAN9215" },
-	{ CHIP_9216, "LAN9216" },
-	{ CHIP_9217, "LAN9217" },
-	{ CHIP_9218, "LAN9218" },
-	{ CHIP_9220, "LAN9220" },
-	{ CHIP_9221, "LAN9221" },
-	{ 0, NULL },
-};
-
-static u32 smc911x_get_mac_csr(struct eth_device *dev, u8 reg)
-{
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
-		;
-	smc911x_reg_write(dev, MAC_CSR_CMD,
-			MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
-		;
-
-	return smc911x_reg_read(dev, MAC_CSR_DATA);
-}
-
-static void smc911x_set_mac_csr(struct eth_device *dev, u8 reg, u32 data)
-{
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
-		;
-	smc911x_reg_write(dev, MAC_CSR_DATA, data);
-	smc911x_reg_write(dev, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
-		;
-}
-
-static int smc911x_detect_chip(struct eth_device *dev)
-{
-	unsigned long val, i;
-
-	val = smc911x_reg_read(dev, BYTE_TEST);
-	if (val == 0xffffffff) {
-		/* Special case -- no chip present */
-		return -1;
-	} else if (val != 0x87654321) {
-		printf(DRIVERNAME ": Invalid chip endian 0x%08lx\n", val);
-		return -1;
-	}
-
-	val = smc911x_reg_read(dev, ID_REV) >> 16;
-	for (i = 0; chip_ids[i].id != 0; i++) {
-		if (chip_ids[i].id == val) break;
-	}
-	if (!chip_ids[i].id) {
-		printf(DRIVERNAME ": Unknown chip ID %04lx\n", val);
-		return -1;
-	}
-
-	dev->priv = (void *)&chip_ids[i];
-
-	return 0;
-}
-
-static void smc911x_reset(struct eth_device *dev)
-{
-	int timeout;
-
-	/*
-	 *  Take out of PM setting first
-	 *  Device is already wake up if PMT_CTRL_READY bit is set
-	 */
-	if ((smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY) == 0) {
-		/* Write to the bytetest will take out of powerdown */
-		smc911x_reg_write(dev, BYTE_TEST, 0x0);
-
-		timeout = 10;
-
-		while (timeout-- &&
-			!(smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY))
-			udelay(10);
-		if (timeout < 0) {
-			printf(DRIVERNAME
-				": timeout waiting for PM restore\n");
-			return;
-		}
-	}
-
-	/* Disable interrupts */
-	smc911x_reg_write(dev, INT_EN, 0);
-
-	smc911x_reg_write(dev, HW_CFG, HW_CFG_SRST);
-
-	timeout = 1000;
-	while (timeout-- && smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
-		udelay(10);
-
-	if (timeout < 0) {
-		printf(DRIVERNAME ": reset timeout\n");
-		return;
-	}
-
-	/* Reset the FIFO level and flow control settings */
-	smc911x_set_mac_csr(dev, FLOW, FLOW_FCPT | FLOW_FCEN);
-	smc911x_reg_write(dev, AFC_CFG, 0x0050287F);
-
-	/* Set to LED outputs */
-	smc911x_reg_write(dev, GPIO_CFG, 0x70070000);
-}
-
 #endif
diff --git a/examples/standalone/smc911x_eeprom.c b/examples/standalone/smc911x_eeprom.c
index 2c05ed902d..19ad9e6297 100644
--- a/examples/standalone/smc911x_eeprom.c
+++ b/examples/standalone/smc911x_eeprom.c
@@ -18,8 +18,164 @@
 #include <console.h>
 #include <exports.h>
 #include <linux/ctype.h>
+#include <linux/types.h>
 #include "../drivers/net/smc911x.h"
 
+#define DRIVERNAME "smc911x"
+
+#if defined (CONFIG_SMC911X_32_BIT) && \
+	defined (CONFIG_SMC911X_16_BIT)
+#error "SMC911X: Only one of CONFIG_SMC911X_32_BIT and \
+	CONFIG_SMC911X_16_BIT shall be set"
+#endif
+
+struct chip_id {
+	u16 id;
+	char *name;
+};
+
+static const struct chip_id chip_ids[] =  {
+	{ CHIP_89218, "LAN89218" },
+	{ CHIP_9115, "LAN9115" },
+	{ CHIP_9116, "LAN9116" },
+	{ CHIP_9117, "LAN9117" },
+	{ CHIP_9118, "LAN9118" },
+	{ CHIP_9211, "LAN9211" },
+	{ CHIP_9215, "LAN9215" },
+	{ CHIP_9216, "LAN9216" },
+	{ CHIP_9217, "LAN9217" },
+	{ CHIP_9218, "LAN9218" },
+	{ CHIP_9220, "LAN9220" },
+	{ CHIP_9221, "LAN9221" },
+	{ 0, NULL },
+};
+
+#if defined (CONFIG_SMC911X_32_BIT)
+static inline u32 __smc911x_reg_read(struct eth_device *dev, u32 offset)
+{
+	return *(volatile u32*)(dev->iobase + offset);
+}
+u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+	__attribute__((weak, alias("__smc911x_reg_read")));
+
+static inline void __smc911x_reg_write(struct eth_device *dev,
+					u32 offset, u32 val)
+{
+	*(volatile u32*)(dev->iobase + offset) = val;
+}
+void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
+	__attribute__((weak, alias("__smc911x_reg_write")));
+#elif defined (CONFIG_SMC911X_16_BIT)
+static inline u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+{
+	volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
+	return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
+}
+static inline void smc911x_reg_write(struct eth_device *dev,
+					u32 offset, u32 val)
+{
+	*(volatile u16 *)(dev->iobase + offset) = (u16)val;
+	*(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);
+}
+#else
+#error "SMC911X: undefined bus width"
+#endif /* CONFIG_SMC911X_16_BIT */
+
+static u32 smc911x_get_mac_csr(struct eth_device *dev, u8 reg)
+{
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+	smc911x_reg_write(dev, MAC_CSR_CMD,
+			MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+
+	return smc911x_reg_read(dev, MAC_CSR_DATA);
+}
+
+static void smc911x_set_mac_csr(struct eth_device *dev, u8 reg, u32 data)
+{
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+	smc911x_reg_write(dev, MAC_CSR_DATA, data);
+	smc911x_reg_write(dev, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
+	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+}
+
+static int smc911x_detect_chip(struct eth_device *dev)
+{
+	unsigned long val, i;
+
+	val = smc911x_reg_read(dev, BYTE_TEST);
+	if (val == 0xffffffff) {
+		/* Special case -- no chip present */
+		return -1;
+	} else if (val != 0x87654321) {
+		printf(DRIVERNAME ": Invalid chip endian 0x%08lx\n", val);
+		return -1;
+	}
+
+	val = smc911x_reg_read(dev, ID_REV) >> 16;
+	for (i = 0; chip_ids[i].id != 0; i++) {
+		if (chip_ids[i].id == val) break;
+	}
+	if (!chip_ids[i].id) {
+		printf(DRIVERNAME ": Unknown chip ID %04lx\n", val);
+		return -1;
+	}
+
+	dev->priv = (void *)&chip_ids[i];
+
+	return 0;
+}
+
+static void smc911x_reset(struct eth_device *dev)
+{
+	int timeout;
+
+	/*
+	 *  Take out of PM setting first
+	 *  Device is already wake up if PMT_CTRL_READY bit is set
+	 */
+	if ((smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY) == 0) {
+		/* Write to the bytetest will take out of powerdown */
+		smc911x_reg_write(dev, BYTE_TEST, 0x0);
+
+		timeout = 10;
+
+		while (timeout-- &&
+			!(smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY))
+			udelay(10);
+		if (timeout < 0) {
+			printf(DRIVERNAME
+				": timeout waiting for PM restore\n");
+			return;
+		}
+	}
+
+	/* Disable interrupts */
+	smc911x_reg_write(dev, INT_EN, 0);
+
+	smc911x_reg_write(dev, HW_CFG, HW_CFG_SRST);
+
+	timeout = 1000;
+	while (timeout-- && smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
+		udelay(10);
+
+	if (timeout < 0) {
+		printf(DRIVERNAME ": reset timeout\n");
+		return;
+	}
+
+	/* Reset the FIFO level and flow control settings */
+	smc911x_set_mac_csr(dev, FLOW, FLOW_FCPT | FLOW_FCEN);
+	smc911x_reg_write(dev, AFC_CFG, 0x0050287F);
+
+	/* Set to LED outputs */
+	smc911x_reg_write(dev, GPIO_CFG, 0x70070000);
+}
+
 /**
  *	smsc_ctrlc - detect press of CTRL+C (common ctrlc() isnt exported!?)
  */

From patchwork Sat Mar 21 17:05:03 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244058
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:03 +0100
Subject: [PATCH V2 08/13] net: smc911x: Drop weak alias from 32bit accessors
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-9-marek.vasut+renesas@gmail.com>

These accessors are not overridden by any board, and even if they were,
this is something which should be handled via DM now, so remove the
weak alias option. Moreover, drop the inline keyword, as the compiler
can decide better.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: s at overriden@overridden@
---
 drivers/net/smc911x.c                | 14 ++++----------
 examples/standalone/smc911x_eeprom.c | 16 +++++-----------
 2 files changed, 9 insertions(+), 21 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 583afa6347..10970b1499 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -44,28 +44,22 @@ static const struct chip_id chip_ids[] =  {
 #endif
 
 #if defined (CONFIG_SMC911X_32_BIT)
-static inline u32 __smc911x_reg_read(struct eth_device *dev, u32 offset)
+static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
 {
 	return *(volatile u32*)(dev->iobase + offset);
 }
-u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
-	__attribute__((weak, alias("__smc911x_reg_read")));
 
-static inline void __smc911x_reg_write(struct eth_device *dev,
-					u32 offset, u32 val)
+static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
 {
 	*(volatile u32*)(dev->iobase + offset) = val;
 }
-void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
-	__attribute__((weak, alias("__smc911x_reg_write")));
 #elif defined (CONFIG_SMC911X_16_BIT)
-static inline u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
 {
 	volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
 	return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
 }
-static inline void smc911x_reg_write(struct eth_device *dev,
-					u32 offset, u32 val)
+static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
 {
 	*(volatile u16 *)(dev->iobase + offset) = (u16)val;
 	*(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);
diff --git a/examples/standalone/smc911x_eeprom.c b/examples/standalone/smc911x_eeprom.c
index 19ad9e6297..270588bcf5 100644
--- a/examples/standalone/smc911x_eeprom.c
+++ b/examples/standalone/smc911x_eeprom.c
@@ -51,28 +51,22 @@ static const struct chip_id chip_ids[] =  {
 };
 
 #if defined (CONFIG_SMC911X_32_BIT)
-static inline u32 __smc911x_reg_read(struct eth_device *dev, u32 offset)
+static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
 {
 	return *(volatile u32*)(dev->iobase + offset);
 }
-u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
-	__attribute__((weak, alias("__smc911x_reg_read")));
 
-static inline void __smc911x_reg_write(struct eth_device *dev,
-					u32 offset, u32 val)
+static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
 {
 	*(volatile u32*)(dev->iobase + offset) = val;
 }
-void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
-	__attribute__((weak, alias("__smc911x_reg_write")));
 #elif defined (CONFIG_SMC911X_16_BIT)
-static inline u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
 {
 	volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
-	return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
+	return (*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16);
 }
-static inline void smc911x_reg_write(struct eth_device *dev,
-					u32 offset, u32 val)
+static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
 {
 	*(volatile u16 *)(dev->iobase + offset) = (u16)val;
 	*(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);

From patchwork Sat Mar 21 17:05:04 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244060
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:04 +0100
Subject: [PATCH V2 09/13] net: smc911x: Convert IO accessors to {read,
 write}{w, l}()
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-10-marek.vasut+renesas@gmail.com>

Convert the IO accessors to standard ones instead of using volatile
void pointers, as those do not cover all the bus access details.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: No change
---
 drivers/net/smc911x.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 10970b1499..d672f02782 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -10,6 +10,7 @@
 #include <malloc.h>
 #include <net.h>
 #include <miiphy.h>
+#include <linux/io.h>
 #include <linux/types.h>
 
 #include "smc911x.h"
@@ -46,23 +47,23 @@ static const struct chip_id chip_ids[] =  {
 #if defined (CONFIG_SMC911X_32_BIT)
 static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
 {
-	return *(volatile u32*)(dev->iobase + offset);
+	return readl(dev->iobase + offset);
 }
 
 static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
 {
-	*(volatile u32*)(dev->iobase + offset) = val;
+	writel(val, dev->iobase + offset);
 }
 #elif defined (CONFIG_SMC911X_16_BIT)
 static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
 {
-	volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
-	return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
+	return (readw(dev->iobase + offset) & 0xffff) |
+	       (readw(dev->iobase + offset + 2) << 16);
 }
 static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
 {
-	*(volatile u16 *)(dev->iobase + offset) = (u16)val;
-	*(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);
+	writew(val & 0xffff, dev->iobase + offset);
+	writew(val >> 16, dev->iobase + offset + 2);
 }
 #else
 #error "SMC911X: undefined bus width"

From patchwork Sat Mar 21 17:05:05 2020
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MIME-Version: 1.0
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X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244062
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:05 +0100
Subject: [PATCH V2 10/13] net: smc911x: Pass around driver private data
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-11-marek.vasut+renesas@gmail.com>

Introduce a private data structure for this driver with embedded
struct eth_device and pass it around. This prepares the driver to
work with both DM and non-DM systems.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: No change
---
 drivers/net/smc911x.c | 230 ++++++++++++++++++++++--------------------
 1 file changed, 123 insertions(+), 107 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index d672f02782..e93011f2db 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -20,6 +20,13 @@ struct chip_id {
 	char *name;
 };
 
+struct smc911x_priv {
+	struct eth_device	dev;
+	phys_addr_t		iobase;
+	const struct chip_id	*chipid;
+	unsigned char		enetaddr[6];
+};
+
 static const struct chip_id chip_ids[] =  {
 	{ CHIP_89218, "LAN89218" },
 	{ CHIP_9115, "LAN9115" },
@@ -45,57 +52,57 @@ static const struct chip_id chip_ids[] =  {
 #endif
 
 #if defined (CONFIG_SMC911X_32_BIT)
-static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+static u32 smc911x_reg_read(struct smc911x_priv *priv, u32 offset)
 {
-	return readl(dev->iobase + offset);
+	return readl(priv->iobase + offset);
 }
 
-static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
+static void smc911x_reg_write(struct smc911x_priv *priv, u32 offset, u32 val)
 {
-	writel(val, dev->iobase + offset);
+	writel(val, priv->iobase + offset);
 }
 #elif defined (CONFIG_SMC911X_16_BIT)
-static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
+static u32 smc911x_reg_read(struct smc911x_priv *priv, u32 offset)
 {
-	return (readw(dev->iobase + offset) & 0xffff) |
-	       (readw(dev->iobase + offset + 2) << 16);
+	return (readw(priv->iobase + offset) & 0xffff) |
+	       (readw(priv->iobase + offset + 2) << 16);
 }
-static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
+static void smc911x_reg_write(struct smc911x_priv *priv, u32 offset, u32 val)
 {
-	writew(val & 0xffff, dev->iobase + offset);
-	writew(val >> 16, dev->iobase + offset + 2);
+	writew(val & 0xffff, priv->iobase + offset);
+	writew(val >> 16, priv->iobase + offset + 2);
 }
 #else
 #error "SMC911X: undefined bus width"
 #endif /* CONFIG_SMC911X_16_BIT */
 
-static u32 smc911x_get_mac_csr(struct eth_device *dev, u8 reg)
+static u32 smc911x_get_mac_csr(struct smc911x_priv *priv, u8 reg)
 {
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+	while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
 		;
-	smc911x_reg_write(dev, MAC_CSR_CMD,
+	smc911x_reg_write(priv, MAC_CSR_CMD,
 			MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+	while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
 		;
 
-	return smc911x_reg_read(dev, MAC_CSR_DATA);
+	return smc911x_reg_read(priv, MAC_CSR_DATA);
 }
 
-static void smc911x_set_mac_csr(struct eth_device *dev, u8 reg, u32 data)
+static void smc911x_set_mac_csr(struct smc911x_priv *priv, u8 reg, u32 data)
 {
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+	while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
 		;
-	smc911x_reg_write(dev, MAC_CSR_DATA, data);
-	smc911x_reg_write(dev, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
-	while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+	smc911x_reg_write(priv, MAC_CSR_DATA, data);
+	smc911x_reg_write(priv, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
+	while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
 		;
 }
 
-static int smc911x_detect_chip(struct eth_device *dev)
+static int smc911x_detect_chip(struct smc911x_priv *priv)
 {
 	unsigned long val, i;
 
-	val = smc911x_reg_read(dev, BYTE_TEST);
+	val = smc911x_reg_read(priv, BYTE_TEST);
 	if (val == 0xffffffff) {
 		/* Special case -- no chip present */
 		return -1;
@@ -104,7 +111,7 @@ static int smc911x_detect_chip(struct eth_device *dev)
 		return -1;
 	}
 
-	val = smc911x_reg_read(dev, ID_REV) >> 16;
+	val = smc911x_reg_read(priv, ID_REV) >> 16;
 	for (i = 0; chip_ids[i].id != 0; i++) {
 		if (chip_ids[i].id == val) break;
 	}
@@ -113,12 +120,12 @@ static int smc911x_detect_chip(struct eth_device *dev)
 		return -1;
 	}
 
-	dev->priv = (void *)&chip_ids[i];
+	priv->chipid = &chip_ids[i];
 
 	return 0;
 }
 
-static void smc911x_reset(struct eth_device *dev)
+static void smc911x_reset(struct smc911x_priv *priv)
 {
 	int timeout;
 
@@ -126,14 +133,14 @@ static void smc911x_reset(struct eth_device *dev)
 	 *  Take out of PM setting first
 	 *  Device is already wake up if PMT_CTRL_READY bit is set
 	 */
-	if ((smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY) == 0) {
+	if ((smc911x_reg_read(priv, PMT_CTRL) & PMT_CTRL_READY) == 0) {
 		/* Write to the bytetest will take out of powerdown */
-		smc911x_reg_write(dev, BYTE_TEST, 0x0);
+		smc911x_reg_write(priv, BYTE_TEST, 0x0);
 
 		timeout = 10;
 
 		while (timeout-- &&
-			!(smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY))
+			!(smc911x_reg_read(priv, PMT_CTRL) & PMT_CTRL_READY))
 			udelay(10);
 		if (timeout < 0) {
 			printf(DRIVERNAME
@@ -143,12 +150,12 @@ static void smc911x_reset(struct eth_device *dev)
 	}
 
 	/* Disable interrupts */
-	smc911x_reg_write(dev, INT_EN, 0);
+	smc911x_reg_write(priv, INT_EN, 0);
 
-	smc911x_reg_write(dev, HW_CFG, HW_CFG_SRST);
+	smc911x_reg_write(priv, HW_CFG, HW_CFG_SRST);
 
 	timeout = 1000;
-	while (timeout-- && smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
+	while (timeout-- && smc911x_reg_read(priv, E2P_CMD) & E2P_CMD_EPC_BUSY)
 		udelay(10);
 
 	if (timeout < 0) {
@@ -157,83 +164,83 @@ static void smc911x_reset(struct eth_device *dev)
 	}
 
 	/* Reset the FIFO level and flow control settings */
-	smc911x_set_mac_csr(dev, FLOW, FLOW_FCPT | FLOW_FCEN);
-	smc911x_reg_write(dev, AFC_CFG, 0x0050287F);
+	smc911x_set_mac_csr(priv, FLOW, FLOW_FCPT | FLOW_FCEN);
+	smc911x_reg_write(priv, AFC_CFG, 0x0050287F);
 
 	/* Set to LED outputs */
-	smc911x_reg_write(dev, GPIO_CFG, 0x70070000);
+	smc911x_reg_write(priv, GPIO_CFG, 0x70070000);
 }
 
-static void smc911x_handle_mac_address(struct eth_device *dev)
+static void smc911x_handle_mac_address(struct smc911x_priv *priv)
 {
 	unsigned long addrh, addrl;
-	uchar *m = dev->enetaddr;
+	unsigned char *m = priv->enetaddr;
 
 	addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
 	addrh = m[4] | (m[5] << 8);
-	smc911x_set_mac_csr(dev, ADDRL, addrl);
-	smc911x_set_mac_csr(dev, ADDRH, addrh);
+	smc911x_set_mac_csr(priv, ADDRL, addrl);
+	smc911x_set_mac_csr(priv, ADDRH, addrh);
 
 	printf(DRIVERNAME ": MAC %pM\n", m);
 }
 
-static int smc911x_eth_phy_read(struct eth_device *dev,
+static int smc911x_eth_phy_read(struct smc911x_priv *priv,
 				u8 phy, u8 reg, u16 *val)
 {
-	while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+	while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
 		;
 
-	smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
+	smc911x_set_mac_csr(priv, MII_ACC, phy << 11 | reg << 6 |
 				MII_ACC_MII_BUSY);
 
-	while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+	while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
 		;
 
-	*val = smc911x_get_mac_csr(dev, MII_DATA);
+	*val = smc911x_get_mac_csr(priv, MII_DATA);
 
 	return 0;
 }
 
-static int smc911x_eth_phy_write(struct eth_device *dev,
+static int smc911x_eth_phy_write(struct smc911x_priv *priv,
 				u8 phy, u8 reg, u16  val)
 {
-	while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+	while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
 		;
 
-	smc911x_set_mac_csr(dev, MII_DATA, val);
-	smc911x_set_mac_csr(dev, MII_ACC,
+	smc911x_set_mac_csr(priv, MII_DATA, val);
+	smc911x_set_mac_csr(priv, MII_ACC,
 		phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
 
-	while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+	while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
 		;
 	return 0;
 }
 
-static int smc911x_phy_reset(struct eth_device *dev)
+static int smc911x_phy_reset(struct smc911x_priv *priv)
 {
 	u32 reg;
 
-	reg = smc911x_reg_read(dev, PMT_CTRL);
+	reg = smc911x_reg_read(priv, PMT_CTRL);
 	reg &= ~0xfffff030;
 	reg |= PMT_CTRL_PHY_RST;
-	smc911x_reg_write(dev, PMT_CTRL, reg);
+	smc911x_reg_write(priv, PMT_CTRL, reg);
 
 	mdelay(100);
 
 	return 0;
 }
 
-static void smc911x_phy_configure(struct eth_device *dev)
+static void smc911x_phy_configure(struct smc911x_priv *priv)
 {
 	int timeout;
 	u16 status;
 
-	smc911x_phy_reset(dev);
+	smc911x_phy_reset(priv);
 
-	smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET);
+	smc911x_eth_phy_write(priv, 1, MII_BMCR, BMCR_RESET);
 	mdelay(1);
-	smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1);
-	smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE |
+	smc911x_eth_phy_write(priv, 1, MII_ADVERTISE, 0x01e1);
+	smc911x_eth_phy_write(priv, 1, MII_BMCR, BMCR_ANENABLE |
 				BMCR_ANRESTART);
 
 	timeout = 5000;
@@ -242,7 +249,7 @@ static void smc911x_phy_configure(struct eth_device *dev)
 		if ((timeout--) == 0)
 			goto err_out;
 
-		if (smc911x_eth_phy_read(dev, 1, MII_BMSR, &status) != 0)
+		if (smc911x_eth_phy_read(priv, 1, MII_BMSR, &status) != 0)
 			goto err_out;
 	} while (!(status & BMSR_LSTATUS));
 
@@ -254,64 +261,66 @@ err_out:
 	printf(DRIVERNAME ": autonegotiation timed out\n");
 }
 
-static void smc911x_enable(struct eth_device *dev)
+static void smc911x_enable(struct smc911x_priv *priv)
 {
 	/* Enable TX */
-	smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
+	smc911x_reg_write(priv, HW_CFG, 8 << 16 | HW_CFG_SF);
 
-	smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
+	smc911x_reg_write(priv, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
 
-	smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
+	smc911x_reg_write(priv, TX_CFG, TX_CFG_TX_ON);
 
 	/* no padding to start of packets */
-	smc911x_reg_write(dev, RX_CFG, 0);
+	smc911x_reg_write(priv, RX_CFG, 0);
 
-	smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
+	smc911x_set_mac_csr(priv, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
 				MAC_CR_HBDIS);
 }
 
 static int smc911x_init(struct eth_device *dev, bd_t * bd)
 {
-	struct chip_id *id = dev->priv;
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
+	const struct chip_id *id = priv->chipid;
 
 	printf(DRIVERNAME ": detected %s controller\n", id->name);
 
-	smc911x_reset(dev);
+	smc911x_reset(priv);
 
 	/* Configure the PHY, initialize the link state */
-	smc911x_phy_configure(dev);
+	smc911x_phy_configure(priv);
 
-	smc911x_handle_mac_address(dev);
+	smc911x_handle_mac_address(priv);
 
 	/* Turn on Tx + Rx */
-	smc911x_enable(dev);
+	smc911x_enable(priv);
 
 	return 0;
 }
 
 static int smc911x_send(struct eth_device *dev, void *packet, int length)
 {
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
 	u32 *data = (u32*)packet;
 	u32 tmplen;
 	u32 status;
 
-	smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
+	smc911x_reg_write(priv, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
 				TX_CMD_A_INT_LAST_SEG | length);
-	smc911x_reg_write(dev, TX_DATA_FIFO, length);
+	smc911x_reg_write(priv, TX_DATA_FIFO, length);
 
 	tmplen = (length + 3) / 4;
 
 	while (tmplen--)
-		smc911x_reg_write(dev, TX_DATA_FIFO, *data++);
+		smc911x_reg_write(priv, TX_DATA_FIFO, *data++);
 
 	/* wait for transmission */
-	while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
+	while (!((smc911x_reg_read(priv, TX_FIFO_INF) &
 					TX_FIFO_INF_TSUSED) >> 16));
 
 	/* get status. Ignore 'no carrier' error, it has no meaning for
 	 * full duplex operation
 	 */
-	status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
+	status = smc911x_reg_read(priv, TX_STATUS_FIFO) &
 			(TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
 			TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
 
@@ -330,25 +339,28 @@ static int smc911x_send(struct eth_device *dev, void *packet, int length)
 
 static void smc911x_halt(struct eth_device *dev)
 {
-	smc911x_reset(dev);
-	smc911x_handle_mac_address(dev);
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
+
+	smc911x_reset(priv);
+	smc911x_handle_mac_address(priv);
 }
 
 static int smc911x_recv(struct eth_device *dev)
 {
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
 	u32 *data = (u32 *)net_rx_packets[0];
 	u32 pktlen, tmplen;
 	u32 status;
 
-	if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
-		status = smc911x_reg_read(dev, RX_STATUS_FIFO);
+	if ((smc911x_reg_read(priv, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
+		status = smc911x_reg_read(priv, RX_STATUS_FIFO);
 		pktlen = (status & RX_STS_PKT_LEN) >> 16;
 
-		smc911x_reg_write(dev, RX_CFG, 0);
+		smc911x_reg_write(priv, RX_CFG, 0);
 
 		tmplen = (pktlen + 3) / 4;
 		while (tmplen--)
-			*data++ = smc911x_reg_read(dev, RX_DATA_FIFO);
+			*data++ = smc911x_reg_read(priv, RX_DATA_FIFO);
 
 		if (status & RX_STS_ES)
 			printf(DRIVERNAME
@@ -367,31 +379,34 @@ static int smc911x_miiphy_read(struct mii_dev *bus, int phy, int devad,
 			       int reg)
 {
 	struct eth_device *dev = eth_get_dev_by_name(bus->name);
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
 	u16 val = 0;
 	int ret;
 
-	if (!dev)
+	if (!dev || !priv)
 		return -ENODEV;
 
-	ret = smc911x_eth_phy_read(dev, phy, reg, &val);
+	ret = smc911x_eth_phy_read(priv, phy, reg, &val);
 	if (ret < 0)
 		return ret;
 
 	return val;
 }
+
 /* wrapper for smc911x_eth_phy_write */
 static int smc911x_miiphy_write(struct mii_dev *bus, int phy, int devad,
 				int reg, u16 val)
 {
 	struct eth_device *dev = eth_get_dev_by_name(bus->name);
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
 
-	if (!dev)
+	if (!dev || !priv)
 		return -ENODEV;
 
-	return smc911x_eth_phy_write(dev, phy, reg, val);
+	return smc911x_eth_phy_write(priv, phy, reg, val);
 }
 
-static int smc911x_initialize_mii(struct eth_device *dev)
+static int smc911x_initialize_mii(struct smc911x_priv *priv)
 {
 	struct mii_dev *mdiodev = mdio_alloc();
 	int ret;
@@ -399,7 +414,7 @@ static int smc911x_initialize_mii(struct eth_device *dev)
 	if (!mdiodev)
 		return -ENOMEM;
 
-	strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
+	strncpy(mdiodev->name, priv->dev.name, MDIO_NAME_LEN);
 	mdiodev->read = smc911x_miiphy_read;
 	mdiodev->write = smc911x_miiphy_write;
 
@@ -412,7 +427,7 @@ static int smc911x_initialize_mii(struct eth_device *dev)
 	return 0;
 }
 #else
-static int smc911x_initialize_mii(struct eth_device *dev)
+static int smc911x_initialize_mii(struct smc911x_priv *priv)
 {
 	return 0;
 }
@@ -421,51 +436,52 @@ static int smc911x_initialize_mii(struct eth_device *dev)
 int smc911x_initialize(u8 dev_num, int base_addr)
 {
 	unsigned long addrl, addrh;
-	struct eth_device *dev;
+	struct smc911x_priv *priv;
 	int ret;
 
-	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	dev = kzalloc(sizeof(*priv), GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
 
-	dev->iobase = base_addr;
+	priv->iobase = base_addr;
+	priv->dev.iobase = base_addr;
 
 	/* Try to detect chip. Will fail if not present. */
-	ret = smc911x_detect_chip(dev);
+	ret = smc911x_detect_chip(priv);
 	if (ret) {
 		ret = 0;	/* Card not detected is not an error */
 		goto err_detect;
 	}
 
-	addrh = smc911x_get_mac_csr(dev, ADDRH);
-	addrl = smc911x_get_mac_csr(dev, ADDRL);
+	addrh = smc911x_get_mac_csr(priv, ADDRH);
+	addrl = smc911x_get_mac_csr(priv, ADDRL);
 	if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
 		/* address is obtained from optional eeprom */
-		dev->enetaddr[0] = addrl;
-		dev->enetaddr[1] = addrl >>  8;
-		dev->enetaddr[2] = addrl >> 16;
-		dev->enetaddr[3] = addrl >> 24;
-		dev->enetaddr[4] = addrh;
-		dev->enetaddr[5] = addrh >> 8;
+		priv->enetaddr[0] = addrl;
+		priv->enetaddr[1] = addrl >>  8;
+		priv->enetaddr[2] = addrl >> 16;
+		priv->enetaddr[3] = addrl >> 24;
+		priv->enetaddr[4] = addrh;
+		priv->enetaddr[5] = addrh >> 8;
 	}
 
-	dev->init = smc911x_init;
-	dev->halt = smc911x_halt;
-	dev->send = smc911x_send;
-	dev->recv = smc911x_recv;
-	sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
+	priv->dev.init = smc911x_init;
+	priv->dev.halt = smc911x_halt;
+	priv->dev.send = smc911x_send;
+	priv->dev.recv = smc911x_recv;
+	sprintf(priv->dev.name, "%s-%hu", DRIVERNAME, dev_num);
 
-	eth_register(dev);
+	eth_register(&priv->dev);
 
-	ret = smc911x_initialize_mii(dev);
+	ret = smc911x_initialize_mii(priv);
 	if (ret)
 		goto err_mii;
 
 	return 1;
 
 err_mii:
-	eth_unregister(dev);
+	eth_unregister(&priv->dev);
 err_detect:
-	free(dev);
+	free(priv);
 	return ret;
 }

From patchwork Sat Mar 21 17:05:06 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244063
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:06 +0100
Subject: [PATCH V2 11/13] net: smc911x: Clean up the status handling in
 smc911x_recv()
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-12-marek.vasut+renesas@gmail.com>

Invert the status handling logic in smc911x_recv(), to make the
function easier to read, no functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: Simplify RX_FIFO_INF_RXSUSED mask handling
    s at Invest@Invert@
---
 drivers/net/smc911x.c | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index e93011f2db..00b152d07f 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -352,23 +352,25 @@ static int smc911x_recv(struct eth_device *dev)
 	u32 pktlen, tmplen;
 	u32 status;
 
-	if ((smc911x_reg_read(priv, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
-		status = smc911x_reg_read(priv, RX_STATUS_FIFO);
-		pktlen = (status & RX_STS_PKT_LEN) >> 16;
+	status = smc911x_reg_read(priv, RX_FIFO_INF);
+	if (!(status & RX_FIFO_INF_RXSUSED))
+		return 0;
 
-		smc911x_reg_write(priv, RX_CFG, 0);
+	status = smc911x_reg_read(priv, RX_STATUS_FIFO);
+	pktlen = (status & RX_STS_PKT_LEN) >> 16;
 
-		tmplen = (pktlen + 3) / 4;
-		while (tmplen--)
-			*data++ = smc911x_reg_read(priv, RX_DATA_FIFO);
+	smc911x_reg_write(priv, RX_CFG, 0);
 
-		if (status & RX_STS_ES)
-			printf(DRIVERNAME
-				": dropped bad packet. Status: 0x%08x\n",
-				status);
-		else
-			net_process_received_packet(net_rx_packets[0], pktlen);
-	}
+	tmplen = (pktlen + 3) / 4;
+	while (tmplen--)
+		*data++ = smc911x_reg_read(priv, RX_DATA_FIFO);
+
+	if (status & RX_STS_ES)
+		printf(DRIVERNAME
+			": dropped bad packet. Status: 0x%08x\n",
+			status);
+	else
+		net_process_received_packet(net_rx_packets[0], pktlen);
 
 	return 0;
 }

From patchwork Sat Mar 21 17:05:07 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244061
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:07 +0100
Subject: [PATCH V2 12/13] net: smc911x: Split non-DM specific bits from
 common code
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-13-marek.vasut+renesas@gmail.com>

Split network handling functions into non-DM specific parts and
common code in preparation for conversion to DM.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
Acked-by: Joe Hershberger <joe.hershberger at ni.com>
---
V2: Add AB from Joe
---
 drivers/net/smc911x.c | 57 ++++++++++++++++++++++++++++++++-----------
 1 file changed, 43 insertions(+), 14 deletions(-)

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 00b152d07f..c5bc3a67d7 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -277,9 +277,8 @@ static void smc911x_enable(struct smc911x_priv *priv)
 				MAC_CR_HBDIS);
 }
 
-static int smc911x_init(struct eth_device *dev, bd_t * bd)
+static int smc911x_init_common(struct smc911x_priv *priv)
 {
-	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
 	const struct chip_id *id = priv->chipid;
 
 	printf(DRIVERNAME ": detected %s controller\n", id->name);
@@ -297,9 +296,9 @@ static int smc911x_init(struct eth_device *dev, bd_t * bd)
 	return 0;
 }
 
-static int smc911x_send(struct eth_device *dev, void *packet, int length)
+static int smc911x_send_common(struct smc911x_priv *priv,
+			       void *packet, int length)
 {
-	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
 	u32 *data = (u32*)packet;
 	u32 tmplen;
 	u32 status;
@@ -337,18 +336,14 @@ static int smc911x_send(struct eth_device *dev, void *packet, int length)
 	return -1;
 }
 
-static void smc911x_halt(struct eth_device *dev)
+static void smc911x_halt_common(struct smc911x_priv *priv)
 {
-	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
-
 	smc911x_reset(priv);
 	smc911x_handle_mac_address(priv);
 }
 
-static int smc911x_recv(struct eth_device *dev)
+static int smc911x_recv_common(struct smc911x_priv *priv, u32 *data)
 {
-	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
-	u32 *data = (u32 *)net_rx_packets[0];
 	u32 pktlen, tmplen;
 	u32 status;
 
@@ -365,14 +360,14 @@ static int smc911x_recv(struct eth_device *dev)
 	while (tmplen--)
 		*data++ = smc911x_reg_read(priv, RX_DATA_FIFO);
 
-	if (status & RX_STS_ES)
+	if (status & RX_STS_ES) {
 		printf(DRIVERNAME
 			": dropped bad packet. Status: 0x%08x\n",
 			status);
-	else
-		net_process_received_packet(net_rx_packets[0], pktlen);
+		return 0;
+	}
 
-	return 0;
+	return pktlen;
 }
 
 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
@@ -435,6 +430,40 @@ static int smc911x_initialize_mii(struct smc911x_priv *priv)
 }
 #endif
 
+static int smc911x_init(struct eth_device *dev, bd_t *bd)
+{
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
+
+	return smc911x_init_common(priv);
+}
+
+static void smc911x_halt(struct eth_device *dev)
+{
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
+
+	smc911x_halt_common(priv);
+}
+
+static int smc911x_send(struct eth_device *dev, void *packet, int length)
+{
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
+
+	return smc911x_send_common(priv, packet, length);
+}
+
+static int smc911x_recv(struct eth_device *dev)
+{
+	struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
+	u32 *data = (u32 *)net_rx_packets[0];
+	int ret;
+
+	ret = smc911x_recv_common(priv, data);
+	if (ret)
+		net_process_received_packet(net_rx_packets[0], ret);
+
+	return ret;
+}
+
 int smc911x_initialize(u8 dev_num, int base_addr)
 {
 	unsigned long addrl, addrh;

From patchwork Sat Mar 21 17:05:08 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Marek Vasut <marek.vasut@gmail.com>
X-Patchwork-Id: 244064
List-Id: U-Boot discussion <u-boot.lists.denx.de>
From: marek.vasut at gmail.com (Marek Vasut)
Date: Sat, 21 Mar 2020 18:05:08 +0100
Subject: [PATCH V2 13/13] net: smc911x: Add DM support
In-Reply-To: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
References: <20200321170508.82753-1-marek.vasut+renesas@gmail.com>
Message-ID: <20200321170508.82753-14-marek.vasut+renesas@gmail.com>

Add support for U-Boot DM and DT probing. Furthermore, build the
SMC911x standalone EEPROM example only for the non-DM case, as it
is not converted yet.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
V2: Drop the board-specific bits
    Hide SMC911X_BASE from Kconfig if DM_ETH
---
 drivers/net/Kconfig          |   2 +
 drivers/net/smc911x.c        | 114 +++++++++++++++++++++++++++++++++++
 examples/standalone/Makefile |   5 +-
 3 files changed, 120 insertions(+), 1 deletion(-)

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 4d1013c984..095395813a 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -388,11 +388,13 @@ config SMC911X
 
 if SMC911X
 
+if !DM_ETH
 config SMC911X_BASE
 	hex "SMC911X Base Address"
 	help
 	  Define this to hold the physical address
 	  of the device (I/O space)
+endif #DM_ETH
 
 choice
 	prompt "SMC911X bus width"
diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index c5bc3a67d7..ff1f5b3b61 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -21,7 +21,9 @@ struct chip_id {
 };
 
 struct smc911x_priv {
+#ifndef CONFIG_DM_ETH
 	struct eth_device	dev;
+#endif
 	phys_addr_t		iobase;
 	const struct chip_id	*chipid;
 	unsigned char		enetaddr[6];
@@ -370,6 +372,8 @@ static int smc911x_recv_common(struct smc911x_priv *priv, u32 *data)
 	return pktlen;
 }
 
+#ifndef CONFIG_DM_ETH
+
 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 /* wrapper for smc911x_eth_phy_read */
 static int smc911x_miiphy_read(struct mii_dev *bus, int phy, int devad,
@@ -516,3 +520,113 @@ err_detect:
 	free(priv);
 	return ret;
 }
+
+#else	/* ifdef CONFIG_DM_ETH */
+
+static int smc911x_start(struct udevice *dev)
+{
+	struct eth_pdata *plat = dev_get_platdata(dev);
+	struct smc911x_priv *priv = dev_get_priv(dev);
+
+	memcpy(priv->enetaddr, plat->enetaddr, sizeof(plat->enetaddr));
+
+	return smc911x_init_common(priv);
+}
+
+static void smc911x_stop(struct udevice *dev)
+{
+	struct smc911x_priv *priv = dev_get_priv(dev);
+
+	smc911x_halt_common(priv);
+}
+
+static int smc911x_send(struct udevice *dev, void *packet, int length)
+{
+	struct smc911x_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	ret = smc911x_send_common(priv, packet, length);
+
+	return ret ? 0 : -ETIMEDOUT;
+}
+
+static int smc911x_recv(struct udevice *dev, int flags, uchar **packetp)
+{
+	struct smc911x_priv *priv = dev_get_priv(dev);
+	u32 *data = (u32 *)net_rx_packets[0];
+	int ret;
+
+	ret = smc911x_recv_common(priv, data);
+	if (ret)
+		*packetp = (void *)data;
+
+	return ret ? ret : -EAGAIN;
+}
+
+static int smc911x_bind(struct udevice *dev)
+{
+	return device_set_name(dev, dev->name);
+}
+
+static int smc911x_probe(struct udevice *dev)
+{
+	struct smc911x_priv *priv = dev_get_priv(dev);
+	unsigned long addrh, addrl;
+	int ret;
+
+	/* Try to detect chip. Will fail if not present. */
+	ret = smc911x_detect_chip(priv);
+	if (ret)
+		return ret;
+
+	addrh = smc911x_get_mac_csr(priv, ADDRH);
+	addrl = smc911x_get_mac_csr(priv, ADDRL);
+	if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
+		/* address is obtained from optional eeprom */
+		priv->enetaddr[0] = addrl;
+		priv->enetaddr[1] = addrl >>  8;
+		priv->enetaddr[2] = addrl >> 16;
+		priv->enetaddr[3] = addrl >> 24;
+		priv->enetaddr[4] = addrh;
+		priv->enetaddr[5] = addrh >> 8;
+	}
+
+	return 0;
+}
+
+static int smc911x_ofdata_to_platdata(struct udevice *dev)
+{
+	struct smc911x_priv *priv = dev_get_priv(dev);
+	struct eth_pdata *pdata = dev_get_platdata(dev);
+
+	pdata->iobase = devfdt_get_addr(dev);
+	priv->iobase = pdata->iobase;
+
+	return 0;
+}
+
+static const struct eth_ops smc911x_ops = {
+	.start	= smc911x_start,
+	.send	= smc911x_send,
+	.recv	= smc911x_recv,
+	.stop	= smc911x_stop,
+};
+
+static const struct udevice_id smc911x_ids[] = {
+	{ .compatible = "smsc,lan9115" },
+	{ }
+};
+
+U_BOOT_DRIVER(smc911x) = {
+	.name		= "eth_smc911x",
+	.id		= UCLASS_ETH,
+	.of_match	= smc911x_ids,
+	.bind		= smc911x_bind,
+	.ofdata_to_platdata = smc911x_ofdata_to_platdata,
+	.probe		= smc911x_probe,
+	.ops		= &smc911x_ops,
+	.priv_auto_alloc_size = sizeof(struct smc911x_priv),
+	.platdata_auto_alloc_size = sizeof(struct eth_pdata),
+	.flags		= DM_FLAG_ALLOC_PRIV_DMA,
+};
+#endif
diff --git a/examples/standalone/Makefile b/examples/standalone/Makefile
index 0b17a91804..6b061bac69 100644
--- a/examples/standalone/Makefile
+++ b/examples/standalone/Makefile
@@ -5,10 +5,13 @@
 
 extra-y        := hello_world
 extra-$(CONFIG_SMC91111)           += smc91111_eeprom
-extra-$(CONFIG_SMC911X)            += smc911x_eeprom
 extra-$(CONFIG_SPI_FLASH_ATMEL)    += atmel_df_pow2
 extra-$(CONFIG_PPC)                += sched
 
+ifndef CONFIG_DM_ETH
+extra-$(CONFIG_SMC911X)            += smc911x_eeprom
+endif
+
 #
 # Some versions of make do not handle trailing white spaces properly;
 # leading to build failures. The problem was found with GNU Make 3.80.