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cris build fixes: update eth_v10.c ethernet driver

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New (updated) version of ethernet driver for cris v10.

- First steps to simplify and make the MII code more similar
  between the etrax100 and etraxfs ports.

- Start the transmit queue before enabling tx interrupts
  to avoid race with the first frame.

- Flip the comparition statement to stick to physical addresses
  to avoid phys_to_virt mapping a potential null pointer.
  This was not an error but the change simplifies debugging
  of address-space mappings.

- Made myPrevRxDesc local to e100_rx since it was only used there.
  Fixed out of memory handling in e100_rx.  If dev_alloc_skb() fails
  persistently the system is hosed anyway but at least it won't
  loop in an interrupt handler.

- Correct some code formatting issues.

- Add defines SET_ETH_ENABLE_LEDS, SET_ETH_DISABLE_LEDS
  and SET_ETH_AUTONEG used in new cris v10 ethernet driver.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Mikael Starvik <starvik@axis.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jesper Nilsson 2007-11-14 17:00:55 -08:00 • committed by Linus Torvalds
parent eda35b64a7
commit bafef0ae9d
2 changed files with 281 additions and 154 deletions
Download patch file Download diff file Expand all files Collapse all files

418
drivers/net/cris/eth_v10.c
View file

@ -250,6 +250,7 @@
#include <asm/system.h>
#include <asm/ethernet.h>
#include <asm/cache.h>
#include <asm/arch/io_interface_mux.h>
//#define ETHDEBUG
#define D(x)
@ -279,6 +280,9 @@ struct net_local {
* by this lock as well.
*/
spinlock_t lock;
spinlock_t led_lock; /* Protect LED state */
spinlock_t transceiver_lock; /* Protect transceiver state. */
};
typedef struct etrax_eth_descr
@ -295,8 +299,6 @@ struct transceiver_ops
void (*check_duplex)(struct net_device* dev);
};
struct transceiver_ops* transceiver;
/* Duplex settings */
enum duplex
{
@ -307,7 +309,7 @@ enum duplex
/* Dma descriptors etc. */
#define MAX_MEDIA_DATA_SIZE 1518
#define MAX_MEDIA_DATA_SIZE 1522
#define MIN_PACKET_LEN 46
#define ETHER_HEAD_LEN 14
@ -344,8 +346,8 @@ enum duplex
#define NO_NETWORK_ACTIVITY 0
#define NETWORK_ACTIVITY 1
#define NBR_OF_RX_DESC 64
#define NBR_OF_TX_DESC 256
#define NBR_OF_RX_DESC 32
#define NBR_OF_TX_DESC 16
/* Large packets are sent directly to upper layers while small packets are */
/* copied (to reduce memory waste). The following constant decides the breakpoint */
@ -367,7 +369,6 @@ enum duplex
static etrax_eth_descr *myNextRxDesc; /* Points to the next descriptor to
to be processed */
static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */
static etrax_eth_descr *myPrevRxDesc; /* The descriptor right before myNextRxDesc */
static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32)));
@ -377,7 +378,6 @@ static etrax_eth_descr* myNextTxDesc; /* Next descriptor to use */
static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32)));
static unsigned int network_rec_config_shadow = 0;
static unsigned int mdio_phy_addr; /* Transciever address */
static unsigned int network_tr_ctrl_shadow = 0;
@ -411,7 +411,7 @@ static int e100_set_config(struct net_device* dev, struct ifmap* map);
static void e100_tx_timeout(struct net_device *dev);
static struct net_device_stats *e100_get_stats(struct net_device *dev);
static void set_multicast_list(struct net_device *dev);
static void e100_hardware_send_packet(char *buf, int length);
static void e100_hardware_send_packet(struct net_local* np, char *buf, int length);
static void update_rx_stats(struct net_device_stats *);
static void update_tx_stats(struct net_device_stats *);
static int e100_probe_transceiver(struct net_device* dev);
@ -434,7 +434,10 @@ static void e100_clear_network_leds(unsigned long dummy);
static void e100_set_network_leds(int active);
static const struct ethtool_ops e100_ethtool_ops;
#if defined(CONFIG_ETRAX_NO_PHY)
static void dummy_check_speed(struct net_device* dev);
static void dummy_check_duplex(struct net_device* dev);
#else
static void broadcom_check_speed(struct net_device* dev);
static void broadcom_check_duplex(struct net_device* dev);
static void tdk_check_speed(struct net_device* dev);
@ -443,16 +446,28 @@ static void intel_check_speed(struct net_device* dev);
static void intel_check_duplex(struct net_device* dev);
static void generic_check_speed(struct net_device* dev);
static void generic_check_duplex(struct net_device* dev);
#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
static void e100_netpoll(struct net_device* dev);
#endif
static int autoneg_normal = 1;
struct transceiver_ops transceivers[] =
{
#if defined(CONFIG_ETRAX_NO_PHY)
{0x0000, dummy_check_speed, dummy_check_duplex} /* Dummy */
#else
{0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */
{0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */
{0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */
{0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/
{0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */
#endif
};
struct transceiver_ops* transceiver = &transceivers[0];
#define tx_done(dev) (*R_DMA_CH0_CMD == 0)
/*
@ -471,14 +486,22 @@ etrax_ethernet_init(void)
int i, err;
printk(KERN_INFO
"ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000-2003 Axis Communications AB\n");
"ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2007 Axis Communications AB\n");
if (cris_request_io_interface(if_eth, cardname)) {
printk(KERN_CRIT "etrax_ethernet_init failed to get IO interface\n");
return -EBUSY;
}
dev = alloc_etherdev(sizeof(struct net_local));
np = dev->priv;
if (!dev)
return -ENOMEM;
np = netdev_priv(dev);
/* we do our own locking */
dev->features |= NETIF_F_LLTX;
dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */
/* now setup our etrax specific stuff */
@ -498,14 +521,22 @@ etrax_ethernet_init(void)
dev->do_ioctl = e100_ioctl;
dev->set_config = e100_set_config;
dev->tx_timeout = e100_tx_timeout;
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = e100_netpoll;
#endif
spin_lock_init(&np->lock);
spin_lock_init(&np->led_lock);
spin_lock_init(&np->transceiver_lock);
/* Initialise the list of Etrax DMA-descriptors */
/* Initialise receive descriptors */
for (i = 0; i < NBR_OF_RX_DESC; i++) {
/* Allocate two extra cachelines to make sure that buffer used by DMA
* does not share cacheline with any other data (to avoid cache bug)
/* Allocate two extra cachelines to make sure that buffer used
* by DMA does not share cacheline with any other data (to
* avoid cache bug)
*/
RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES);
if (!RxDescList[i].skb)
@ -541,7 +572,6 @@ etrax_ethernet_init(void)
myNextRxDesc = &RxDescList[0];
myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
myFirstTxDesc = &TxDescList[0];
myNextTxDesc = &TxDescList[0];
myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1];
@ -562,10 +592,11 @@ etrax_ethernet_init(void)
current_speed = 10;
current_speed_selection = 0; /* Auto */
speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL;
duplex_timer.data = (unsigned long)dev;
speed_timer.data = (unsigned long)dev;
speed_timer.function = e100_check_speed;
clear_led_timer.function = e100_clear_network_leds;
clear_led_timer.data = (unsigned long)dev;
full_duplex = 0;
current_duplex = autoneg;
@ -574,7 +605,6 @@ etrax_ethernet_init(void)
duplex_timer.function = e100_check_duplex;
/* Initialize mii interface */
np->mii_if.phy_id = mdio_phy_addr;
np->mii_if.phy_id_mask = 0x1f;
np->mii_if.reg_num_mask = 0x1f;
np->mii_if.dev = dev;
@ -585,6 +615,9 @@ etrax_ethernet_init(void)
/* unwanted addresses are matched */
*R_NETWORK_GA_0 = 0x00000000;
*R_NETWORK_GA_1 = 0x00000000;
/* Initialize next time the led can flash */
led_next_time = jiffies;
return 0;
}
@ -595,7 +628,7 @@ etrax_ethernet_init(void)
static int
e100_set_mac_address(struct net_device *dev, void *p)
{
struct net_local *np = (struct net_local *)dev->priv;
struct net_local *np = netdev_priv(dev);
struct sockaddr *addr = p;
int i;
@ -686,6 +719,25 @@ e100_open(struct net_device *dev)
goto grace_exit2;
}
/*
* Always allocate the DMA channels after the IRQ,
* and clean up on failure.
*/
if (cris_request_dma(NETWORK_TX_DMA_NBR,
cardname,
DMA_VERBOSE_ON_ERROR,
dma_eth)) {
goto grace_exit3;
}
if (cris_request_dma(NETWORK_RX_DMA_NBR,
cardname,
DMA_VERBOSE_ON_ERROR,
dma_eth)) {
goto grace_exit4;
}
/* give the HW an idea of what MAC address we want */
*R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) |
@ -700,6 +752,7 @@ e100_open(struct net_device *dev)
*R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */
#else
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, max_size, size1522);
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive);
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable);
SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex);
@ -719,8 +772,7 @@ e100_open(struct net_device *dev)
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable);
*R_NETWORK_TR_CTRL = network_tr_ctrl_shadow;
save_flags(flags);
cli();
local_irq_save(flags);
/* enable the irq's for ethernet DMA */
@ -752,12 +804,13 @@ e100_open(struct net_device *dev)
*R_DMA_CH0_FIRST = 0;
*R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc);
netif_start_queue(dev);
restore_flags(flags);
local_irq_restore(flags);
/* Probe for transceiver */
if (e100_probe_transceiver(dev))
goto grace_exit3;
goto grace_exit5;
/* Start duplex/speed timers */
add_timer(&speed_timer);
@ -766,10 +819,14 @@ e100_open(struct net_device *dev)
/* We are now ready to accept transmit requeusts from
* the queueing layer of the networking.
*/
netif_start_queue(dev);
netif_carrier_on(dev);
return 0;
grace_exit5:
cris_free_dma(NETWORK_RX_DMA_NBR, cardname);
grace_exit4:
cris_free_dma(NETWORK_TX_DMA_NBR, cardname);
grace_exit3:
free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev);
grace_exit2:
@ -780,12 +837,20 @@ grace_exit0:
return -EAGAIN;
}
#if defined(CONFIG_ETRAX_NO_PHY)
static void
dummy_check_speed(struct net_device* dev)
{
current_speed = 100;
}
#else
static void
generic_check_speed(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE);
if ((data & ADVERTISE_100FULL) ||
(data & ADVERTISE_100HALF))
current_speed = 100;
@ -797,7 +862,10 @@ static void
tdk_check_speed(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_TDK_DIAGNOSTIC_REG);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id,
MDIO_TDK_DIAGNOSTIC_REG);
current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10);
}
@ -805,7 +873,10 @@ static void
broadcom_check_speed(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_AUX_CTRL_STATUS_REG);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id,
MDIO_AUX_CTRL_STATUS_REG);
current_speed = (data & MDIO_BC_SPEED ? 100 : 10);
}
@ -813,39 +884,55 @@ static void
intel_check_speed(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id,
MDIO_INT_STATUS_REG_2);
current_speed = (data & MDIO_INT_SPEED ? 100 : 10);
}
#endif
static void
e100_check_speed(unsigned long priv)
{
struct net_device* dev = (struct net_device*)priv;
struct net_local *np = netdev_priv(dev);
static int led_initiated = 0;
unsigned long data;
int old_speed = current_speed;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMSR);
spin_lock(&np->transceiver_lock);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMSR);
if (!(data & BMSR_LSTATUS)) {
current_speed = 0;
} else {
transceiver->check_speed(dev);
}
spin_lock(&np->led_lock);
if ((old_speed != current_speed) || !led_initiated) {
led_initiated = 1;
e100_set_network_leds(NO_NETWORK_ACTIVITY);
if (current_speed)
netif_carrier_on(dev);
else
netif_carrier_off(dev);
}
spin_unlock(&np->led_lock);
/* Reinitialize the timer. */
speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL;
add_timer(&speed_timer);
spin_unlock(&np->transceiver_lock);
}
static void
e100_negotiate(struct net_device* dev)
{
unsigned short data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE);
struct net_local *np = netdev_priv(dev);
unsigned short data = e100_get_mdio_reg(dev, np->mii_if.phy_id,
MII_ADVERTISE);
/* Discard old speed and duplex settings */
data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL |
@ -883,32 +970,41 @@ e100_negotiate(struct net_device* dev)
default: /* assume autoneg speed and duplex */
data |= ADVERTISE_10HALF | ADVERTISE_10FULL |
ADVERTISE_100HALF | ADVERTISE_100FULL;
break;
}
e100_set_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE, data);
e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE, data);
/* Renegotiate with link partner */
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR);
if (autoneg_normal) {
data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR);
data |= BMCR_ANENABLE | BMCR_ANRESTART;
e100_set_mdio_reg(dev, mdio_phy_addr, MII_BMCR, data);
}
e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR, data);
}
static void
e100_set_speed(struct net_device* dev, unsigned long speed)
{
struct net_local *np = netdev_priv(dev);
spin_lock(&np->transceiver_lock);
if (speed != current_speed_selection) {
current_speed_selection = speed;
e100_negotiate(dev);
}
spin_unlock(&np->transceiver_lock);
}
static void
e100_check_duplex(unsigned long priv)
{
struct net_device *dev = (struct net_device *)priv;
struct net_local *np = (struct net_local *)dev->priv;
int old_duplex = full_duplex;
struct net_local *np = netdev_priv(dev);
int old_duplex;
spin_lock(&np->transceiver_lock);
old_duplex = full_duplex;
transceiver->check_duplex(dev);
if (old_duplex != full_duplex) {
/* Duplex changed */
@ -920,13 +1016,22 @@ e100_check_duplex(unsigned long priv)
duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL;
add_timer(&duplex_timer);
np->mii_if.full_duplex = full_duplex;
spin_unlock(&np->transceiver_lock);
}
#if defined(CONFIG_ETRAX_NO_PHY)
static void
dummy_check_duplex(struct net_device* dev)
{
full_duplex = 1;
}
#else
static void
generic_check_duplex(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE);
if ((data & ADVERTISE_10FULL) ||
(data & ADVERTISE_100FULL))
full_duplex = 1;
@ -938,7 +1043,10 @@ static void
tdk_check_duplex(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_TDK_DIAGNOSTIC_REG);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id,
MDIO_TDK_DIAGNOSTIC_REG);
full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0;
}
@ -946,7 +1054,10 @@ static void
broadcom_check_duplex(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_AUX_CTRL_STATUS_REG);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id,
MDIO_AUX_CTRL_STATUS_REG);
full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0;
}
@ -954,38 +1065,51 @@ static void
intel_check_duplex(struct net_device* dev)
{
unsigned long data;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2);
struct net_local *np = netdev_priv(dev);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id,
MDIO_INT_STATUS_REG_2);
full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0;
}
#endif
static void
e100_set_duplex(struct net_device* dev, enum duplex new_duplex)
{
struct net_local *np = netdev_priv(dev);
spin_lock(&np->transceiver_lock);
if (new_duplex != current_duplex) {
current_duplex = new_duplex;
e100_negotiate(dev);
}
spin_unlock(&np->transceiver_lock);
}
static int
e100_probe_transceiver(struct net_device* dev)
{
#if !defined(CONFIG_ETRAX_NO_PHY)
unsigned int phyid_high;
unsigned int phyid_low;
unsigned int oui;
struct transceiver_ops* ops = NULL;
struct net_local *np = netdev_priv(dev);
spin_lock(&np->transceiver_lock);
/* Probe MDIO physical address */
for (mdio_phy_addr = 0; mdio_phy_addr <= 31; mdio_phy_addr++) {
if (e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMSR) != 0xffff)
for (np->mii_if.phy_id = 0; np->mii_if.phy_id <= 31;
np->mii_if.phy_id++) {
if (e100_get_mdio_reg(dev,
np->mii_if.phy_id, MII_BMSR) != 0xffff)
break;
}
if (mdio_phy_addr == 32)
if (np->mii_if.phy_id == 32)
return -ENODEV;
/* Get manufacturer */
phyid_high = e100_get_mdio_reg(dev, mdio_phy_addr, MII_PHYSID1);
phyid_low = e100_get_mdio_reg(dev, mdio_phy_addr, MII_PHYSID2);
phyid_high = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID1);
phyid_low = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID2);
oui = (phyid_high << 6) | (phyid_low >> 10);
for (ops = &transceivers[0]; ops->oui; ops++) {
@ -994,6 +1118,8 @@ e100_probe_transceiver(struct net_device* dev)
}
transceiver = ops;
spin_unlock(&np->transceiver_lock);
#endif
return 0;
}
@ -1088,13 +1214,14 @@ e100_receive_mdio_bit()
static void
e100_reset_transceiver(struct net_device* dev)
{
struct net_local *np = netdev_priv(dev);
unsigned short cmd;
unsigned short data;
int bitCounter;
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR);
data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR);
cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (mdio_phy_addr << 7) | (MII_BMCR << 2);
cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (np->mii_if.phy_id << 7) | (MII_BMCR << 2);
e100_send_mdio_cmd(cmd, 1);
@ -1112,7 +1239,7 @@ e100_reset_transceiver(struct net_device* dev)
static void
e100_tx_timeout(struct net_device *dev)
{
struct net_local *np = (struct net_local *)dev->priv;
struct net_local *np = netdev_priv(dev);
unsigned long flags;
spin_lock_irqsave(&np->lock, flags);
@ -1134,8 +1261,7 @@ e100_tx_timeout(struct net_device *dev)
e100_reset_transceiver(dev);
/* and get rid of the packets that never got an interrupt */
while (myFirstTxDesc != myNextTxDesc)
{
while (myFirstTxDesc != myNextTxDesc) {
dev_kfree_skb(myFirstTxDesc->skb);
myFirstTxDesc->skb = 0;
myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next);
@ -1161,7 +1287,7 @@ e100_tx_timeout(struct net_device *dev)
static int
e100_send_packet(struct sk_buff *skb, struct net_device *dev)
{
struct net_local *np = (struct net_local *)dev->priv;
struct net_local *np = netdev_priv(dev);
unsigned char *buf = skb->data;
unsigned long flags;
@ -1174,7 +1300,7 @@ e100_send_packet(struct sk_buff *skb, struct net_device *dev)
dev->trans_start = jiffies;
e100_hardware_send_packet(buf, skb->len);
e100_hardware_send_packet(np, buf, skb->len);
myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next);
@ -1197,13 +1323,15 @@ static irqreturn_t
e100rxtx_interrupt(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *)dev_id;
struct net_local *np = (struct net_local *)dev->priv;
unsigned long irqbits = *R_IRQ_MASK2_RD;
struct net_local *np = netdev_priv(dev);
unsigned long irqbits;
/* Disable RX/TX IRQs to avoid reentrancy */
*R_IRQ_MASK2_CLR =
IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) |
IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr);
/*
* Note that both rx and tx interrupts are blocked at this point,
* regardless of which got us here.
*/
irqbits = *R_IRQ_MASK2_RD;
/* Handle received packets */
if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) {
@ -1219,7 +1347,7 @@ e100rxtx_interrupt(int irq, void *dev_id)
* allocate a new buffer to put a packet in.
*/
e100_rx(dev);
((struct net_local *)dev->priv)->stats.rx_packets++;
np->stats.rx_packets++;
/* restart/continue on the channel, for safety */
*R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart);
/* clear dma channel 1 eop/descr irq bits */
@ -1233,9 +1361,8 @@ e100rxtx_interrupt(int irq, void *dev_id)
}
/* Report any packets that have been sent */
while (myFirstTxDesc != phys_to_virt(*R_DMA_CH0_FIRST) &&
myFirstTxDesc != myNextTxDesc)
{
while (virt_to_phys(myFirstTxDesc) != *R_DMA_CH0_FIRST &&
(netif_queue_stopped(dev) || myFirstTxDesc != myNextTxDesc)) {
np->stats.tx_bytes += myFirstTxDesc->skb->len;
np->stats.tx_packets++;
@ -1244,18 +1371,14 @@ e100rxtx_interrupt(int irq, void *dev_id)
dev_kfree_skb_irq(myFirstTxDesc->skb);
myFirstTxDesc->skb = 0;
myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next);
}
if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) {
/* acknowledge the eop interrupt and wake up queue */
*R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do);
/* Wake up queue. */
netif_wake_queue(dev);
}
/* Enable RX/TX IRQs again */
*R_IRQ_MASK2_SET =
IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) |
IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set);
if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) {
/* acknowledge the eop interrupt. */
*R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do);
}
return IRQ_HANDLED;
}
@ -1264,7 +1387,7 @@ static irqreturn_t
e100nw_interrupt(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *)dev_id;
struct net_local *np = (struct net_local *)dev->priv;
struct net_local *np = netdev_priv(dev);
unsigned long irqbits = *R_IRQ_MASK0_RD;
/* check for underrun irq */
@ -1286,7 +1409,6 @@ e100nw_interrupt(int irq, void *dev_id)
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr);
*R_NETWORK_TR_CTRL = network_tr_ctrl_shadow;
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop);
*R_NETWORK_TR_CTRL = IO_STATE(R_NETWORK_TR_CTRL, clr_error, clr);
np->stats.tx_errors++;
D(printk("ethernet excessive collisions!\n"));
}
@ -1299,12 +1421,13 @@ e100_rx(struct net_device *dev)
{
struct sk_buff *skb;
int length = 0;
struct net_local *np = (struct net_local *)dev->priv;
struct net_local *np = netdev_priv(dev);
unsigned char *skb_data_ptr;
#ifdef ETHDEBUG
int i;
#endif
etrax_eth_descr *prevRxDesc; /* The descriptor right before myNextRxDesc */
spin_lock(&np->led_lock);
if (!led_active && time_after(jiffies, led_next_time)) {
/* light the network leds depending on the current speed. */
e100_set_network_leds(NETWORK_ACTIVITY);
@ -1314,9 +1437,10 @@ e100_rx(struct net_device *dev)
led_active = 1;
mod_timer(&clear_led_timer, jiffies + HZ/10);
}
spin_unlock(&np->led_lock);
length = myNextRxDesc->descr.hw_len - 4;
((struct net_local *)dev->priv)->stats.rx_bytes += length;
np->stats.rx_bytes += length;
#ifdef ETHDEBUG
printk("Got a packet of length %d:\n", length);
@ -1336,7 +1460,7 @@ e100_rx(struct net_device *dev)
if (!skb) {
np->stats.rx_errors++;
printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
return;
goto update_nextrxdesc;
}
skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */
@ -1354,15 +1478,15 @@ e100_rx(struct net_device *dev)
else {
/* Large packet, send directly to upper layers and allocate new
* memory (aligned to cache line boundary to avoid bug).
* Before sending the skb to upper layers we must make sure that
* skb->data points to the aligned start of the packet.
* Before sending the skb to upper layers we must make sure
* that skb->data points to the aligned start of the packet.
*/
int align;
struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES);
if (!new_skb) {
np->stats.rx_errors++;
printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
return;
goto update_nextrxdesc;
}
skb = myNextRxDesc->skb;
align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data;
@ -1377,9 +1501,10 @@ e100_rx(struct net_device *dev)
/* Send the packet to the upper layers */
netif_rx(skb);
update_nextrxdesc:
/* Prepare for next packet */
myNextRxDesc->descr.status = 0;
myPrevRxDesc = myNextRxDesc;
prevRxDesc = myNextRxDesc;
myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next);
rx_queue_len++;
@ -1387,9 +1512,9 @@ e100_rx(struct net_device *dev)
/* Check if descriptors should be returned */
if (rx_queue_len == RX_QUEUE_THRESHOLD) {
flush_etrax_cache();
myPrevRxDesc->descr.ctrl |= d_eol;
prevRxDesc->descr.ctrl |= d_eol;
myLastRxDesc->descr.ctrl &= ~d_eol;
myLastRxDesc = myPrevRxDesc;
myLastRxDesc = prevRxDesc;
rx_queue_len = 0;
}
}
@ -1398,7 +1523,7 @@ e100_rx(struct net_device *dev)
static int
e100_close(struct net_device *dev)
{
struct net_local *np = (struct net_local *)dev->priv;
struct net_local *np = netdev_priv(dev);
printk(KERN_INFO "Closing %s.\n", dev->name);
@ -1426,6 +1551,9 @@ e100_close(struct net_device *dev)
free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev);
free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev);
cris_free_dma(NETWORK_TX_DMA_NBR, cardname);
cris_free_dma(NETWORK_RX_DMA_NBR, cardname);
/* Update the statistics here. */
update_rx_stats(&np->stats);
@ -1443,18 +1571,11 @@ e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct mii_ioctl_data *data = if_mii(ifr);
struct net_local *np = netdev_priv(dev);
int rc = 0;
int old_autoneg;
spin_lock(&np->lock); /* Preempt protection */
switch (cmd) {
case SIOCGMIIPHY: /* Get PHY address */
data->phy_id = mdio_phy_addr;
break;
case SIOCGMIIREG: /* Read MII register */
data->val_out = e100_get_mdio_reg(dev, mdio_phy_addr, data->reg_num);
break;
case SIOCSMIIREG: /* Write MII register */
e100_set_mdio_reg(dev, mdio_phy_addr, data->reg_num, data->val_in);
break;
/* The ioctls below should be considered obsolete but are */
/* still present for compatability with old scripts/apps */
case SET_ETH_SPEED_10: /* 10 Mbps */
@ -1463,60 +1584,47 @@ e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
case SET_ETH_SPEED_100: /* 100 Mbps */
e100_set_speed(dev, 100);
break;
case SET_ETH_SPEED_AUTO: /* Auto negotiate speed */
case SET_ETH_SPEED_AUTO: /* Auto-negotiate speed */
e100_set_speed(dev, 0);
break;
case SET_ETH_DUPLEX_HALF: /* Half duplex. */
case SET_ETH_DUPLEX_HALF: /* Half duplex */
e100_set_duplex(dev, half);
break;
case SET_ETH_DUPLEX_FULL: /* Full duplex. */
case SET_ETH_DUPLEX_FULL: /* Full duplex */
e100_set_duplex(dev, full);
break;
case SET_ETH_DUPLEX_AUTO: /* Autonegotiate duplex*/
case SET_ETH_DUPLEX_AUTO: /* Auto-negotiate duplex */
e100_set_duplex(dev, autoneg);
break;
case SET_ETH_AUTONEG:
old_autoneg = autoneg_normal;
autoneg_normal = *(int*)data;
if (autoneg_normal != old_autoneg)
e100_negotiate(dev);
break;
default:
return -EINVAL;
rc = generic_mii_ioctl(&np->mii_if, if_mii(ifr),
cmd, NULL);
break;
}
spin_unlock(&np->lock);
return 0;
return rc;
}
static int e100_set_settings(struct net_device *dev,
struct ethtool_cmd *ecmd)
static int e100_get_settings(struct net_device *dev,
struct ethtool_cmd *cmd)
{
ecmd->supported = SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII |
SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
ecmd->port = PORT_TP;
ecmd->transceiver = XCVR_EXTERNAL;
ecmd->phy_address = mdio_phy_addr;
ecmd->speed = current_speed;
ecmd->duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
ecmd->advertising = ADVERTISED_TP;
struct net_local *np = netdev_priv(dev);
int err;
if (current_duplex == autoneg && current_speed_selection == 0)
ecmd->advertising |= ADVERTISED_Autoneg;
else {
ecmd->advertising |=
ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
if (current_speed_selection == 10)
ecmd->advertising &= ~(ADVERTISED_100baseT_Half |
ADVERTISED_100baseT_Full);
else if (current_speed_selection == 100)
ecmd->advertising &= ~(ADVERTISED_10baseT_Half |
ADVERTISED_10baseT_Full);
if (current_duplex == half)
ecmd->advertising &= ~(ADVERTISED_10baseT_Full |
ADVERTISED_100baseT_Full);
else if (current_duplex == full)
ecmd->advertising &= ~(ADVERTISED_10baseT_Half |
ADVERTISED_100baseT_Half);
}
spin_lock_irq(&np->lock);
err = mii_ethtool_gset(&np->mii_if, cmd);
spin_unlock_irq(&np->lock);
ecmd->autoneg = AUTONEG_ENABLE;
return 0;
/* The PHY may support 1000baseT, but the Etrax100 does not. */
cmd->supported &= ~(SUPPORTED_1000baseT_Half
| SUPPORTED_1000baseT_Full);
return err;
}
static int e100_set_settings(struct net_device *dev,
@ -1560,7 +1668,8 @@ static const struct ethtool_ops e100_ethtool_ops = {
static int
e100_set_config(struct net_device *dev, struct ifmap *map)
{
struct net_local *np = (struct net_local *)dev->priv;
struct net_local *np = netdev_priv(dev);
spin_lock(&np->lock); /* Preempt protection */
switch(map->port) {
@ -1612,7 +1721,6 @@ update_tx_stats(struct net_device_stats *es)
es->collisions +=
IO_EXTRACT(R_TR_COUNTERS, single_col, r) +
IO_EXTRACT(R_TR_COUNTERS, multiple_col, r);
es->tx_errors += IO_EXTRACT(R_TR_COUNTERS, deferred, r);
}
/*
@ -1622,8 +1730,9 @@ update_tx_stats(struct net_device_stats *es)
static struct net_device_stats *
e100_get_stats(struct net_device *dev)
{
struct net_local *lp = (struct net_local *)dev->priv;
struct net_local *lp = netdev_priv(dev);
unsigned long flags;
spin_lock_irqsave(&lp->lock, flags);
update_rx_stats(&lp->stats);
@ -1643,13 +1752,13 @@ e100_get_stats(struct net_device *dev)
static void
set_multicast_list(struct net_device *dev)
{
struct net_local *lp = (struct net_local *)dev->priv;
struct net_local *lp = netdev_priv(dev);
int num_addr = dev->mc_count;
unsigned long int lo_bits;
unsigned long int hi_bits;
spin_lock(&lp->lock);
if (dev->flags & IFF_PROMISC)
{
if (dev->flags & IFF_PROMISC) {
/* promiscuous mode */
lo_bits = 0xfffffffful;
hi_bits = 0xfffffffful;
@ -1679,6 +1788,7 @@ set_multicast_list(struct net_device *dev)
struct dev_mc_list *dmi = dev->mc_list;
int i;
char *baddr;
lo_bits = 0x00000000ul;
hi_bits = 0x00000000ul;
for (i = 0; i < num_addr; i++) {
@ -1708,8 +1818,7 @@ set_multicast_list(struct net_device *dev)
if (hash_ix >= 32) {
hi_bits |= (1 << (hash_ix-32));
}
else {
} else {
lo_bits |= (1 << hash_ix);
}
dmi = dmi->next;
@ -1724,10 +1833,11 @@ set_multicast_list(struct net_device *dev)
}
void
e100_hardware_send_packet(char *buf, int length)
e100_hardware_send_packet(struct net_local *np, char *buf, int length)
{
D(printk("e100 send pack, buf 0x%x len %d\n", buf, length));
spin_lock(&np->led_lock);
if (!led_active && time_after(jiffies, led_next_time)) {
/* light the network leds depending on the current speed. */
e100_set_network_leds(NETWORK_ACTIVITY);
@ -1737,6 +1847,7 @@ e100_hardware_send_packet(char *buf, int length)
led_active = 1;
mod_timer(&clear_led_timer, jiffies + HZ/10);
}
spin_unlock(&np->led_lock);
/* configure the tx dma descriptor */
myNextTxDesc->descr.sw_len = length;
@ -1754,6 +1865,11 @@ e100_hardware_send_packet(char *buf, int length)
static void
e100_clear_network_leds(unsigned long dummy)
{
struct net_device *dev = (struct net_device *)dummy;
struct net_local *np = netdev_priv(dev);
spin_lock(&np->led_lock);
if (led_active && time_after(jiffies, led_next_time)) {
e100_set_network_leds(NO_NETWORK_ACTIVITY);
@ -1761,6 +1877,8 @@ e100_clear_network_leds(unsigned long dummy)
led_next_time = jiffies + NET_FLASH_PAUSE;
led_active = 0;
}
spin_unlock(&np->led_lock);
}
static void
@ -1781,19 +1899,25 @@ e100_set_network_leds(int active)
#else
LED_NETWORK_SET(LED_OFF);
#endif
}
else if (light_leds) {
} else if (light_leds) {
if (current_speed == 10) {
LED_NETWORK_SET(LED_ORANGE);
} else {
LED_NETWORK_SET(LED_GREEN);
}
}
else {
} else {
LED_NETWORK_SET(LED_OFF);
}
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void
e100_netpoll(struct net_device* netdev)
{
e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev, NULL);
}
#endif
static int
etrax_init_module(void)
{

3
include/asm-cris/ethernet.h
View file

@ -15,4 +15,7 @@
#define SET_ETH_DUPLEX_AUTO SIOCDEVPRIVATE+3 /* Auto neg duplex */
#define SET_ETH_DUPLEX_HALF SIOCDEVPRIVATE+4 /* Full duplex */
#define SET_ETH_DUPLEX_FULL SIOCDEVPRIVATE+5 /* Half duplex */
#define SET_ETH_ENABLE_LEDS SIOCDEVPRIVATE+6 /* Enable net LEDs */
#define SET_ETH_DISABLE_LEDS SIOCDEVPRIVATE+7 /* Disable net LEDs */
#define SET_ETH_AUTONEG SIOCDEVPRIVATE+8
#endif /* _CRIS_ETHERNET_H */