sh: sh_eth: Change new network API

sh_eth used old network API. This patch changed new API.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

2 files changed, 231 insertions, 134 deletions

diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 9e3cf98..ebe8588 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -24,6 +24,7 @@
 #include <common.h>
 #include <malloc.h>
 #include <net.h>
+#include <netdev.h>
 #include <asm/errno.h>
 #include <asm/io.h>
 
@@ -36,12 +37,7 @@
 # error "Please define CONFIG_SH_ETHER_PHY_ADDR"
 #endif
 
-extern int eth_init(bd_t *bd);
-extern void eth_halt(void);
-extern int eth_rx(void);
-extern int eth_send(volatile void *packet, int length);
-
-static struct dev_info_s *dev;
+#define SH_ETH_PHY_DELAY 50000
 
 /*
  * Bits are written to the PHY serially using the
@@ -89,7 +85,7 @@ static void sh_eth_mii_ind_bus_release(int port)
 	udelay(1);
 }
 
-static int sh_eth_mii_read_phy_bits(int port, u32 * val, int len)
+static void sh_eth_mii_read_phy_bits(int port, u32 *val, int len)
 {
 	int i;
 	u32 pir;
@@ -106,8 +102,6 @@ static int sh_eth_mii_read_phy_bits(int port, u32 * val, int len)
 		outl(0, PIR(port));
 		udelay(1);
 	}
-
-	return 0;
 }
 
 #define PHY_INIT	0xFFFFFFFF
@@ -183,26 +177,23 @@ static void sh_eth_mii_write_phy_reg(int port, u8 phy_addr, int reg, u16 val)
 	sh_eth_mii_ind_bus_release(port);
 }
 
-void eth_halt(void)
-{
-}
-
-int eth_send(volatile void *packet, int len)
+int sh_eth_send(struct eth_device *dev, volatile void *packet, int len)
 {
-	int port = dev->port;
-	struct port_info_s *port_info = &dev->port_info[port];
-	int timeout;
-	int rc = 0;
+	struct sh_eth_dev *eth = dev->priv;
+	int port = eth->port, ret = 0, timeout;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 
 	if (!packet || len > 0xffff) {
-		printf("eth_send: Invalid argument\n");
-		return -EINVAL;
+		printf(SHETHER_NAME ": %s: Invalid argument\n", __func__);
+		ret = -EINVAL;
+		goto err;
 	}
 
 	/* packet must be a 4 byte boundary */
 	if ((int)packet & (4 - 1)) {
-		printf("eth_send: packet not 4 byte alligned\n");
-		return -EFAULT;
+		printf(SHETHER_NAME ": %s: packet not 4 byte alligned\n", __func__);
+		ret = -EFAULT;
+		goto err;
 	}
 
 	/* Update tx descriptor */
@@ -224,24 +215,25 @@ int eth_send(volatile void *packet, int len)
 		udelay(100);
 
 	if (timeout < 0) {
-		printf("eth_send: transmit timeout\n");
-		rc = -1;
+		printf(SHETHER_NAME ": transmit timeout\n");
+		ret = -ETIMEDOUT;
 		goto err;
 	}
 
-err:
 	port_info->tx_desc_cur++;
 	if (port_info->tx_desc_cur >= port_info->tx_desc_base + NUM_TX_DESC)
 		port_info->tx_desc_cur = port_info->tx_desc_base;
 
-	return rc;
+	return ret;
+err:
+	return ret;
 }
 
-int eth_rx(void)
+int sh_eth_recv(struct eth_device *dev)
 {
-	int port = dev->port;
-	struct port_info_s *port_info = &dev->port_info[port];
-	int len = 0;
+	struct sh_eth_dev *eth = dev->priv;
+	int port = eth->port, len = 0;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 	volatile u8 *packet;
 
 	/* Check if the rx descriptor is ready */
@@ -275,10 +267,10 @@ int eth_rx(void)
 }
 
 #define EDMR_INIT_CNT 1000
-static int sh_eth_reset(struct dev_info_s *dev)
+static int sh_eth_reset(struct sh_eth_dev *eth)
 {
-	int port = dev->port;
-	int i;
+	int port = eth->port;
+	int ret = 0, i;
 
 	/* Start e-dmac transmitter and receiver */
 	outl(EDSR_ENALL, EDSR(port));
@@ -292,33 +284,36 @@ static int sh_eth_reset(struct dev_info_s *dev)
 	}
 
 	if (i == EDMR_INIT_CNT) {
-		printf("Error: Software reset timeout\n");
-		return -1;
+		printf(SHETHER_NAME  ": Software reset timeout\n");
+		ret = -EIO;
 	}
-	return 0;
+
+	return ret;
 }
 
-static int sh_eth_tx_desc_init(struct dev_info_s *dev)
+static int sh_eth_tx_desc_init(struct sh_eth_dev *eth)
 {
-	int port = dev->port;
-	struct port_info_s *port_info = &dev->port_info[port];
+	int port = eth->port, i, ret = 0;
 	u32 tmp_addr;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 	struct tx_desc_s *cur_tx_desc;
-	int i;
 
-	/* Allocate tx descriptors. They must be TX_DESC_SIZE bytes
-	   aligned */
-	if (!(port_info->tx_desc_malloc = malloc(NUM_TX_DESC *
+	/*
+	 * Allocate tx descriptors. They must be TX_DESC_SIZE bytes aligned
+	 */
+	port_info->tx_desc_malloc = malloc(NUM_TX_DESC *
 						 sizeof(struct tx_desc_s) +
-						 TX_DESC_SIZE - 1))) {
-		printf("Error: malloc failed\n");
-		return -ENOMEM;
+						 TX_DESC_SIZE - 1);
+	if (!port_info->tx_desc_malloc) {
+		printf(SHETHER_NAME ": malloc failed\n");
+		ret = -ENOMEM;
+		goto err;
 	}
+
 	tmp_addr = (u32) (((int)port_info->tx_desc_malloc + TX_DESC_SIZE - 1) &
 			  ~(TX_DESC_SIZE - 1));
 	/* Make sure we use a P2 address (non-cacheable) */
 	port_info->tx_desc_base = (struct tx_desc_s *)ADDR_TO_P2(tmp_addr);
-
 	port_info->tx_desc_cur = port_info->tx_desc_base;
 
 	/* Initialize all descriptors */
@@ -340,26 +335,30 @@ static int sh_eth_tx_desc_init(struct dev_info_s *dev)
 	outl(ADDR_TO_PHY(cur_tx_desc), TDFXR(port));
 	outl(0x01, TDFFR(port));/* Last discriptor bit */
 
-	return 0;
+err:
+	return ret;
 }
 
-static int sh_eth_rx_desc_init(struct dev_info_s *dev)
+static int sh_eth_rx_desc_init(struct sh_eth_dev *eth)
 {
-	int port = dev->port;
-	struct port_info_s *port_info = &dev->port_info[port];
-	u32 tmp_addr;
+	int port = eth->port, i , ret = 0;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 	struct rx_desc_s *cur_rx_desc;
+	u32 tmp_addr;
 	u8 *rx_buf;
-	int i;
 
-	/* Allocate rx descriptors. They must be RX_DESC_SIZE bytes
-	   aligned */
-	if (!(port_info->rx_desc_malloc = malloc(NUM_RX_DESC *
+	/*
+	 * Allocate rx descriptors. They must be RX_DESC_SIZE bytes aligned
+	 */
+	port_info->rx_desc_malloc = malloc(NUM_RX_DESC *
 						 sizeof(struct rx_desc_s) +
-						 RX_DESC_SIZE - 1))) {
-		printf("Error: malloc failed\n");
-		return -ENOMEM;
+						 RX_DESC_SIZE - 1);
+	if (!port_info->rx_desc_malloc) {
+		printf(SHETHER_NAME ": malloc failed\n");
+		ret = -ENOMEM;
+		goto err;
 	}
+
 	tmp_addr = (u32) (((int)port_info->rx_desc_malloc + RX_DESC_SIZE - 1) &
 			  ~(RX_DESC_SIZE - 1));
 	/* Make sure we use a P2 address (non-cacheable) */
@@ -367,15 +366,17 @@ static int sh_eth_rx_desc_init(struct dev_info_s *dev)
 
 	port_info->rx_desc_cur = port_info->rx_desc_base;
 
-	/* Allocate rx data buffers. They must be 32 bytes aligned  and in
-	   P2 area */
-	if (!(port_info->rx_buf_malloc = malloc(NUM_RX_DESC * MAX_BUF_SIZE +
-						31))) {
-		printf("Error: malloc failed\n");
-		free(port_info->rx_desc_malloc);
-		port_info->rx_desc_malloc = NULL;
-		return -ENOMEM;
+	/*
+	 * Allocate rx data buffers. They must be 32 bytes aligned  and in
+	 * P2 area
+	 */
+	port_info->rx_buf_malloc = malloc(NUM_RX_DESC * MAX_BUF_SIZE + 31);
+	if (!port_info->rx_buf_malloc) {
+		printf(SHETHER_NAME ": malloc failed\n");
+		ret = -ENOMEM;
+		goto err_buf_malloc;
 	}
+
 	tmp_addr = (u32)(((int)port_info->rx_buf_malloc + (32 - 1)) &
 			  ~(32 - 1));
 	port_info->rx_buf_base = (u8 *)ADDR_TO_P2(tmp_addr);
@@ -399,18 +400,31 @@ static int sh_eth_rx_desc_init(struct dev_info_s *dev)
 	outl(ADDR_TO_PHY(cur_rx_desc), RDFXR(port));
 	outl(RDFFR_RDLF, RDFFR(port));
 
-	return 0;
+	return ret;
+
+err_buf_malloc:
+	free(port_info->rx_desc_malloc);
+	port_info->rx_desc_malloc = NULL;
+
+err:
+	return ret;
 }
 
-static void sh_eth_desc_free(struct dev_info_s *dev)
+static void sh_eth_tx_desc_free(struct sh_eth_dev *eth)
 {
-	int port = dev->port;
-	struct port_info_s *port_info = &dev->port_info[port];
+	int port = eth->port;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 
 	if (port_info->tx_desc_malloc) {
 		free(port_info->tx_desc_malloc);
 		port_info->tx_desc_malloc = NULL;
 	}
+}
+
+static void sh_eth_rx_desc_free(struct sh_eth_dev *eth)
+{
+	int port = eth->port;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 
 	if (port_info->rx_desc_malloc) {
 		free(port_info->rx_desc_malloc);
@@ -423,36 +437,48 @@ static void sh_eth_desc_free(struct dev_info_s *dev)
 	}
 }
 
-static int sh_eth_desc_init(struct dev_info_s *dev)
+static int sh_eth_desc_init(struct sh_eth_dev *eth)
 {
-	int rc;
+	int ret = 0;
 
-	if ((rc = sh_eth_tx_desc_init(dev)) || (rc = sh_eth_rx_desc_init(dev))) {
-		sh_eth_desc_free(dev);
-		return rc;
-	}
+	ret = sh_eth_tx_desc_init(eth);
+	if (ret)
+		goto err_tx_init;
 
-	return 0;
+	ret = sh_eth_rx_desc_init(eth);
+	if (ret)
+		goto err_rx_init;
+
+	return ret;
+err_rx_init:
+	sh_eth_tx_desc_free(eth);
+
+err_tx_init:
+	return ret;
 }
 
-static int sh_eth_phy_config(struct dev_info_s *dev)
+static int sh_eth_phy_config(struct sh_eth_dev *eth)
 {
-	int port = dev->port;
-	struct port_info_s *port_info = &dev->port_info[port];
-	int timeout;
+	int port = eth->port, timeout, ret = 0;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 	u32 val;
+
 	/* Reset phy */
-	sh_eth_mii_write_phy_reg(port, port_info->phy_addr, PHY_CTRL, PHY_C_RESET);
+	sh_eth_mii_write_phy_reg
+		(port, port_info->phy_addr, PHY_CTRL, PHY_C_RESET);
 	timeout = 10;
 	while (timeout--) {
-		val = sh_eth_mii_read_phy_reg(port, port_info->phy_addr, PHY_CTRL);
+		val = sh_eth_mii_read_phy_reg(port,
+				port_info->phy_addr, PHY_CTRL);
 		if (!(val & PHY_C_RESET))
 			break;
-		udelay(50000);
+		udelay(SH_ETH_PHY_DELAY);
 	}
+
 	if (timeout < 0) {
-		printf("%s phy reset timeout\n", __func__);
-		return -1;
+		printf(SHETHER_NAME ": phy reset timeout\n");
+		ret = -EIO;
+		goto err_tout;
 	}
 
 	/* Advertise 100/10 baseT full/half duplex */
@@ -467,23 +493,27 @@ static int sh_eth_phy_config(struct dev_info_s *dev)
 		val = sh_eth_mii_read_phy_reg(port, port_info->phy_addr, 1);
 		if (val & PHY_S_ANEGC)
 			break;
-		udelay(50000);
+
+		udelay(SH_ETH_PHY_DELAY);
 	}
+
 	if (timeout < 0) {
-		printf("sh_eth_phy_config() phy auto-negotiation failed\n");
-		return -1;
+		printf(SHETHER_NAME ": phy auto-negotiation failed\n");
+		ret = -ETIMEDOUT;
+		goto err_tout;
 	}
 
-	return 0;
+	return ret;
+
+err_tout:
+	return ret;
 }
 
-static int sh_eth_config(struct dev_info_s *dev, bd_t * bd)
+static int sh_eth_config(struct sh_eth_dev *eth, bd_t *bd)
 {
-	int port = dev->port;
-	struct port_info_s *port_info = &dev->port_info[port];
-	u32 val;
-	u32 phy_status;
-	int rc;
+	int port = eth->port, ret = 0;
+	u32 val,  phy_status;
+	struct sh_eth_info *port_info = &eth->port_info[port];
 
 	/* Configure e-dmac registers */
 	outl((inl(EDMR(port)) & ~EMDR_DESC_R) | EDMR_EL, EDMR(port));
@@ -513,20 +543,20 @@ static int sh_eth_config(struct dev_info_s *dev, bd_t * bd)
 	outl(TPAUSER_TPAUSE, TPAUSER(port));
 
 	/* Configure phy */
-	if ((rc = sh_eth_phy_config(dev)))
-		return rc;
-
+	ret = sh_eth_phy_config(eth);
+	if (ret) {
+		printf(SHETHER_NAME ":i phy config timeout\n");
+		goto err_phy_cfg;
+	}
 	/* Read phy status to finish configuring the e-mac */
-	phy_status = sh_eth_mii_read_phy_reg(dev->port,
-					     dev->port_info[dev->port].phy_addr,
-					     1);
+	phy_status = sh_eth_mii_read_phy_reg(port, port_info->phy_addr, 1);
 
 	/* Set the transfer speed */
 	if (phy_status & (PHY_S_100X_F|PHY_S_100X_H)) {
-		printf("100Base/");
+		printf(SHETHER_NAME ": 100Base/");
 		outl(GECMR_100B, GECMR(port));
 	} else {
-		printf("10Base/");
+		printf(SHETHER_NAME ": 10Base/");
 		outl(GECMR_10B, GECMR(port));
 	}
 
@@ -538,27 +568,34 @@ static int sh_eth_config(struct dev_info_s *dev, bd_t * bd)
 		printf("Half\n");
 		outl((ECMR_CHG_DM|ECMR_RE|ECMR_TE),  ECMR(port));
 	}
-	return 0;
+
+	return ret;
+
+err_phy_cfg:
+	return ret;
 }
 
-static int sh_eth_start(struct dev_info_s *dev)
+static void sh_eth_start(struct sh_eth_dev *eth)
 {
 	/*
 	 * Enable the e-dmac receiver only. The transmitter will be enabled when
 	 * we have something to transmit
 	 */
-	outl(EDRRR_R, EDRRR(dev->port));
+	outl(EDRRR_R, EDRRR(eth->port));
+}
 
-	return 0;
+static void sh_eth_stop(struct sh_eth_dev *eth)
+{
+	outl(~EDRRR_R, EDRRR(eth->port));
 }
 
 static int sh_eth_get_mac(bd_t *bd)
 {
 	char *s, *e;
-	int i;
 
 	s = getenv("ethaddr");
 	if (s != NULL) {
+		int i;
 		for (i = 0; i < 6; ++i) {
 			bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
 			if (s)
@@ -570,34 +607,92 @@ static int sh_eth_get_mac(bd_t *bd)
 	return 0;
 }
 
-int eth_init(bd_t *bd)
+int sh_eth_init(struct eth_device *dev, bd_t *bd)
 {
-	int rc;
-	/* Allocate main device information structure */
-	if (!(dev = malloc(sizeof(*dev)))) {
-		printf("eth_init: malloc failed\n");
-		return -ENOMEM;
-	}
+	int ret = 0;
+	struct sh_eth_dev *eth = dev->priv;
 
-	memset(dev, 0, sizeof(*dev));
+	ret = sh_eth_reset(eth);
+	if (ret)
+		goto err;
 
-	dev->port = CONFIG_SH_ETHER_USE_PORT;
-	dev->port_info[dev->port].phy_addr = CONFIG_SH_ETHER_PHY_ADDR;
+	ret = sh_eth_desc_init(eth);
+	if (ret)
+		goto err;
 
-	sh_eth_get_mac(bd);
+	ret = sh_eth_config(eth, bd);
+	if (ret)
+		goto err_config;
+
+	sh_eth_start(eth);
+
+	return ret;
 
-	if ((rc = sh_eth_reset(dev)) || (rc = sh_eth_desc_init(dev)))
+err_config:
+	sh_eth_tx_desc_free(eth);
+	sh_eth_rx_desc_free(eth);
+
+err:
+	return ret;
+}
+
+void sh_eth_halt(struct eth_device *dev)
+{
+	struct sh_eth_dev *eth = dev->priv;
+
+	sh_eth_reset(eth);
+	sh_eth_stop(eth);
+}
+
+int sh_eth_initialize(bd_t *bd)
+{
+    int ret = 0;
+	struct sh_eth_dev *eth = NULL;
+    struct eth_device *dev = NULL;
+
+    eth = (struct sh_eth_dev *)malloc(sizeof(struct sh_eth_dev));
+	if (!eth) {
+		printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
+		ret = -ENOMEM;
 		goto err;
+	}
 
-	if ((rc = sh_eth_config(dev, bd)) || (rc = sh_eth_start(dev)))
-		goto err_desc;
+    dev = (struct eth_device *)malloc(sizeof(struct eth_device));
+	if (!dev) {
+		printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
+		ret = -ENOMEM;
+		goto err;
+	}
+    memset(dev, 0, sizeof(struct eth_device));
+    memset(eth, 0, sizeof(struct sh_eth_dev));
 
-	return 0;
+	eth->port = CONFIG_SH_ETHER_USE_PORT;
+	eth->port_info[eth->port].phy_addr = CONFIG_SH_ETHER_PHY_ADDR;
+
+    dev->priv = (void *)eth;
+    dev->iobase = 0;
+    dev->init = sh_eth_init;
+    dev->halt = sh_eth_halt;
+    dev->send = sh_eth_send;
+    dev->recv = sh_eth_recv;
+    eth->port_info[eth->port].dev = dev;
+
+	sprintf(dev->name, SHETHER_NAME);
+
+    /* Register Device to EtherNet subsystem  */
+    eth_register(dev);
+
+	sh_eth_get_mac(bd);
+
+	return ret;
 
-err_desc:
-	sh_eth_desc_free(dev);
 err:
-	free(dev);
-	printf("eth_init: Failed\n");
-	return rc;
+	if (dev)
+		free(dev);
+
+	if (eth)
+		free(eth);
+
+	printf(SHETHER_NAME ": Failed\n");
+	return ret;
 }
diff --git a/drivers/net/sh_eth.h b/drivers/net/sh_eth.h
index 9cf0ea0..a13fff0 100644
--- a/drivers/net/sh_eth.h
+++ b/drivers/net/sh_eth.h
@@ -20,6 +20,7 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <netdev.h>
 #include <asm/types.h>
 
 #define SHETHER_NAME "sh_eth"
@@ -48,7 +49,7 @@
 #define TX_DESC_PADDING		4
 #define TX_DESC_SIZE		(12 + TX_DESC_PADDING)
 
-/* Tx descriptor. We always use 4 bytes of padding */
+/* Tx descriptor. We always use 3 bytes of padding */
 struct tx_desc_s {
 	volatile u32 td0;
 	u32 td1;
@@ -72,7 +73,7 @@ struct rx_desc_s {
 	u32 padding;
 };
 
-struct port_info_s {
+struct sh_eth_info {
 	struct tx_desc_s *tx_desc_malloc;
 	struct tx_desc_s *tx_desc_base;
 	struct tx_desc_s *tx_desc_cur;
@@ -83,11 +84,12 @@ struct port_info_s {
 	u8 *rx_buf_base;
 	u8 mac_addr[6];
 	u8 phy_addr;
+	struct eth_device *dev;
 };
 
-struct dev_info_s {
+struct sh_eth_dev {
 	int port;
-	struct port_info_s port_info[MAX_PORT_NUM];
+	struct sh_eth_info port_info[MAX_PORT_NUM];
 };
 
 /* Register Address */