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Message-ID: <20070228224710.GA9229@xyzzy.farnsworth.org>
Date: Wed, 28 Feb 2007 15:47:10 -0700
From: "Dale Farnsworth" <dale@...nsworth.org>
To: Jeff Garzik <jgarzik@...ox.com>
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
linux-mips@...ux-mips.org, Ralf Baechle <ralf@...ux-mips.org>
Subject: Re: [PATCH 2/2] mv643xx_eth: Place explicit port number in mv643xx_eth_platform_data
We had been using the platform_device.id field to identify which ethernet
port is used for mv643xx_eth device. This is not correct in general.
It will be incorrect, for example, if a hardware platform uses a single
port but not the first port. Here, we add an explicit port_number field
to struct mv643xx_eth_platform_data.
This makes the mv643xx_eth_platform_data structure required, but that
isn't an issue since all users currently provide it already.
Signed-off-by: Dale Farnsworth <dale@...nsworth.org>
diff --git a/arch/mips/momentum/jaguar_atx/platform.c b/arch/mips/momentum/jaguar_atx/platform.c
Index: b/arch/mips/momentum/jaguar_atx/platform.c
===================================================================
--- a/arch/mips/momentum/jaguar_atx/platform.c
+++ b/arch/mips/momentum/jaguar_atx/platform.c
@@ -48,6 +48,8 @@ static struct resource mv64x60_eth0_reso
};
static struct mv643xx_eth_platform_data eth0_pd = {
+ .port_number = 0,
+
.tx_sram_addr = MV_SRAM_BASE_ETH0,
.tx_sram_size = MV_SRAM_TXRING_SIZE,
.tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
@@ -77,6 +79,8 @@ static struct resource mv64x60_eth1_reso
};
static struct mv643xx_eth_platform_data eth1_pd = {
+ .port_number = 1,
+
.tx_sram_addr = MV_SRAM_BASE_ETH1,
.tx_sram_size = MV_SRAM_TXRING_SIZE,
.tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
@@ -105,7 +109,9 @@ static struct resource mv64x60_eth2_reso
},
};
-static struct mv643xx_eth_platform_data eth2_pd;
+static struct mv643xx_eth_platform_data eth2_pd = {
+ .port_number = 2,
+};
static struct platform_device eth2_device = {
.name = MV643XX_ETH_NAME,
Index: b/arch/mips/momentum/ocelot_3/platform.c
===================================================================
--- a/arch/mips/momentum/ocelot_3/platform.c
+++ b/arch/mips/momentum/ocelot_3/platform.c
@@ -48,6 +48,8 @@ static struct resource mv64x60_eth0_reso
};
static struct mv643xx_eth_platform_data eth0_pd = {
+ .port_number = 0,
+
.tx_sram_addr = MV_SRAM_BASE_ETH0,
.tx_sram_size = MV_SRAM_TXRING_SIZE,
.tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
@@ -77,6 +79,8 @@ static struct resource mv64x60_eth1_reso
};
static struct mv643xx_eth_platform_data eth1_pd = {
+ .port_number = 1,
+
.tx_sram_addr = MV_SRAM_BASE_ETH1,
.tx_sram_size = MV_SRAM_TXRING_SIZE,
.tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
@@ -105,7 +109,9 @@ static struct resource mv64x60_eth2_reso
},
};
-static struct mv643xx_eth_platform_data eth2_pd;
+static struct mv643xx_eth_platform_data eth2_pd = {
+ .port_number = 2,
+};
static struct platform_device eth2_device = {
.name = MV643XX_ETH_NAME,
Index: b/arch/mips/momentum/ocelot_c/platform.c
===================================================================
--- a/arch/mips/momentum/ocelot_c/platform.c
+++ b/arch/mips/momentum/ocelot_c/platform.c
@@ -47,6 +47,8 @@ static struct resource mv64x60_eth0_reso
};
static struct mv643xx_eth_platform_data eth0_pd = {
+ .port_number = 0,
+
.tx_sram_addr = MV_SRAM_BASE_ETH0,
.tx_sram_size = MV_SRAM_TXRING_SIZE,
.tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
@@ -76,6 +78,8 @@ static struct resource mv64x60_eth1_reso
};
static struct mv643xx_eth_platform_data eth1_pd = {
+ .port_number = 1,
+
.tx_sram_addr = MV_SRAM_BASE_ETH1,
.tx_sram_size = MV_SRAM_TXRING_SIZE,
.tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
Index: b/arch/powerpc/platforms/chrp/pegasos_eth.c
===================================================================
--- a/arch/powerpc/platforms/chrp/pegasos_eth.c
+++ b/arch/powerpc/platforms/chrp/pegasos_eth.c
@@ -58,6 +58,7 @@ static struct resource mv643xx_eth0_reso
static struct mv643xx_eth_platform_data eth0_pd = {
+ .port_number = 0,
.tx_sram_addr = PEGASOS2_SRAM_BASE_ETH0,
.tx_sram_size = PEGASOS2_SRAM_TXRING_SIZE,
.tx_queue_size = PEGASOS2_SRAM_TXRING_SIZE/16,
@@ -87,6 +88,7 @@ static struct resource mv643xx_eth1_reso
};
static struct mv643xx_eth_platform_data eth1_pd = {
+ .port_number = 1,
.tx_sram_addr = PEGASOS2_SRAM_BASE_ETH1,
.tx_sram_size = PEGASOS2_SRAM_TXRING_SIZE,
.tx_queue_size = PEGASOS2_SRAM_TXRING_SIZE/16,
Index: b/arch/ppc/syslib/mv64x60.c
===================================================================
--- a/arch/ppc/syslib/mv64x60.c
+++ b/arch/ppc/syslib/mv64x60.c
@@ -339,7 +339,9 @@ static struct resource mv64x60_eth0_reso
},
};
-static struct mv643xx_eth_platform_data eth0_pd;
+static struct mv643xx_eth_platform_data eth0_pd = {
+ .port_number = 0,
+};
static struct platform_device eth0_device = {
.name = MV643XX_ETH_NAME,
@@ -362,7 +364,9 @@ static struct resource mv64x60_eth1_reso
},
};
-static struct mv643xx_eth_platform_data eth1_pd;
+static struct mv643xx_eth_platform_data eth1_pd = {
+ .port_number = 1,
+};
static struct platform_device eth1_device = {
.name = MV643XX_ETH_NAME,
@@ -385,7 +389,9 @@ static struct resource mv64x60_eth2_reso
},
};
-static struct mv643xx_eth_platform_data eth2_pd;
+static struct mv643xx_eth_platform_data eth2_pd = {
+ .port_number = 2,
+};
static struct platform_device eth2_device = {
.name = MV643XX_ETH_NAME,
Index: b/drivers/net/mv643xx_eth.c
===================================================================
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -1309,7 +1309,7 @@ static void mv643xx_init_ethtool_cmd(str
static int mv643xx_eth_probe(struct platform_device *pdev)
{
struct mv643xx_eth_platform_data *pd;
- int port_num = pdev->id;
+ int port_num;
struct mv643xx_private *mp;
struct net_device *dev;
u8 *p;
@@ -1318,6 +1318,13 @@ static int mv643xx_eth_probe(struct plat
struct ethtool_cmd cmd;
int duplex = DUPLEX_HALF;
int speed = 0; /* default to auto-negotiation */
+ static u8 zero_mac_addr[6] = { 0 };
+
+ pd = pdev->dev.platform_data;
+ if (pd == NULL) {
+ printk(KERN_ERR "No mv643xx_eth_platform_data\n");
+ return -ENODEV;
+ }
dev = alloc_etherdev(sizeof(struct mv643xx_private));
if (!dev)
@@ -1331,8 +1338,6 @@ static int mv643xx_eth_probe(struct plat
BUG_ON(!res);
dev->irq = res->start;
- mp->port_num = port_num;
-
dev->open = mv643xx_eth_open;
dev->stop = mv643xx_eth_stop;
dev->hard_start_xmit = mv643xx_eth_start_xmit;
@@ -1373,40 +1378,39 @@ static int mv643xx_eth_probe(struct plat
spin_lock_init(&mp->lock);
+ port_num = pd->port_number;
+
/* set default config values */
eth_port_uc_addr_get(dev, dev->dev_addr);
mp->rx_ring_size = MV643XX_ETH_PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
mp->tx_ring_size = MV643XX_ETH_PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
- pd = pdev->dev.platform_data;
- if (pd) {
- static u8 zero_mac_addr[6] = { 0 };
+ if (memcmp(pd->mac_addr, zero_mac_addr, 6) != 0)
+ memcpy(dev->dev_addr, pd->mac_addr, 6);
- if (memcmp(pd->mac_addr, zero_mac_addr, 6) != 0)
- memcpy(dev->dev_addr, pd->mac_addr, 6);
+ if (pd->phy_addr || pd->force_phy_addr)
+ ethernet_phy_set(port_num, pd->phy_addr);
- if (pd->phy_addr || pd->force_phy_addr)
- ethernet_phy_set(port_num, pd->phy_addr);
+ if (pd->rx_queue_size)
+ mp->rx_ring_size = pd->rx_queue_size;
- if (pd->rx_queue_size)
- mp->rx_ring_size = pd->rx_queue_size;
+ if (pd->tx_queue_size)
+ mp->tx_ring_size = pd->tx_queue_size;
- if (pd->tx_queue_size)
- mp->tx_ring_size = pd->tx_queue_size;
+ if (pd->tx_sram_size) {
+ mp->tx_sram_size = pd->tx_sram_size;
+ mp->tx_sram_addr = pd->tx_sram_addr;
+ }
- if (pd->tx_sram_size) {
- mp->tx_sram_size = pd->tx_sram_size;
- mp->tx_sram_addr = pd->tx_sram_addr;
- }
+ if (pd->rx_sram_size) {
+ mp->rx_sram_size = pd->rx_sram_size;
+ mp->rx_sram_addr = pd->rx_sram_addr;
+ }
- if (pd->rx_sram_size) {
- mp->rx_sram_size = pd->rx_sram_size;
- mp->rx_sram_addr = pd->rx_sram_addr;
- }
+ duplex = pd->duplex;
+ speed = pd->speed;
- duplex = pd->duplex;
- speed = pd->speed;
- }
+ mp->port_num = port_num;
/* Hook up MII support for ethtool */
mp->mii.dev = dev;
Index: b/include/linux/mv643xx.h
===================================================================
--- a/include/linux/mv643xx.h
+++ b/include/linux/mv643xx.h
@@ -1289,6 +1289,7 @@ struct mv64xxx_i2c_pdata {
#define MV643XX_ETH_NAME "mv643xx_eth"
struct mv643xx_eth_platform_data {
+ int port_number;
u16 force_phy_addr; /* force override if phy_addr == 0 */
u16 phy_addr;
-
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