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linux-next/drivers/net/fs_enet/fs_enet-main.c
Andy Fleming e8a2b6a420 [PATCH] PHY: Add support for configuring the PHY connection interface 
Most PHYs connect to an ethernet controller over a GMII or MII
interface.  However, a growing number are connected over
different interfaces, such as RGMII or SGMII.

The ethernet driver will tell the PHY what type of connection it
is by setting it manually, or passing it in through phy_connect
(or phy_attach).

Changes include:
* Updates to documentation
* Updates to PHY Lib consumers
* Changes to PHY Lib to add interface support
* Some minor changes to whitespace in phy.h
* gianfar driver now detects interface and passes appropriate
  value to PHY Lib
Signed-off-by: Andrew Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-02 00:33:11 -05:00

1283 lines
29 KiB
C
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/*
* Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
*
* Copyright (c) 2003 Intracom S.A.
* by Pantelis Antoniou <panto@intracom.gr>
*
* 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
* and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/bitops.h>
#include <linux/fs.h>
#include <linux/platform_device.h>
#include <linux/phy.h>
#include <linux/vmalloc.h>
#include <asm/pgtable.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include "fs_enet.h"
/*************************************************/
static char version[] __devinitdata =
DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n";
MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>");
MODULE_DESCRIPTION("Freescale Ethernet Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);
int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */
module_param(fs_enet_debug, int, 0);
MODULE_PARM_DESC(fs_enet_debug,
"Freescale bitmapped debugging message enable value");
static void fs_set_multicast_list(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
(*fep->ops->set_multicast_list)(dev);
}
/* NAPI receive function */
static int fs_enet_rx_napi(struct net_device *dev, int *budget)
{
struct fs_enet_private *fep = netdev_priv(dev);
const struct fs_platform_info *fpi = fep->fpi;
cbd_t *bdp;
struct sk_buff *skb, *skbn, *skbt;
int received = 0;
u16 pkt_len, sc;
int curidx;
int rx_work_limit = 0; /* pacify gcc */
rx_work_limit = min(dev->quota, *budget);
if (!netif_running(dev))
return 0;
/*
* First, grab all of the stats for the incoming packet.
* These get messed up if we get called due to a busy condition.
*/
bdp = fep->cur_rx;
/* clear RX status bits for napi*/
(*fep->ops->napi_clear_rx_event)(dev);
while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
curidx = bdp - fep->rx_bd_base;
/*
* Since we have allocated space to hold a complete frame,
* the last indicator should be set.
*/
if ((sc & BD_ENET_RX_LAST) == 0)
printk(KERN_WARNING DRV_MODULE_NAME
": %s rcv is not +last\n",
dev->name);
/*
* Check for errors.
*/
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
fep->stats.rx_errors++;
/* Frame too long or too short. */
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
fep->stats.rx_length_errors++;
/* Frame alignment */
if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
fep->stats.rx_frame_errors++;
/* CRC Error */
if (sc & BD_ENET_RX_CR)
fep->stats.rx_crc_errors++;
/* FIFO overrun */
if (sc & BD_ENET_RX_OV)
fep->stats.rx_crc_errors++;
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
skbn = skb;
} else {
/* napi, got packet but no quota */
if (--rx_work_limit < 0)
break;
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
/*
* Process the incoming frame.
*/
fep->stats.rx_packets++;
pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
fep->stats.rx_bytes += pkt_len + 4;
if (pkt_len <= fpi->rx_copybreak) {
/* +2 to make IP header L1 cache aligned */
skbn = dev_alloc_skb(pkt_len + 2);
if (skbn != NULL) {
skb_reserve(skbn, 2); /* align IP header */
memcpy(skbn->data, skb->data, pkt_len);
/* swap */
skbt = skb;
skb = skbn;
skbn = skbt;
}
} else
skbn = dev_alloc_skb(ENET_RX_FRSIZE);
if (skbn != NULL) {
skb->dev = dev;
skb_put(skb, pkt_len); /* Make room */
skb->protocol = eth_type_trans(skb, dev);
received++;
netif_receive_skb(skb);
} else {
printk(KERN_WARNING DRV_MODULE_NAME
": %s Memory squeeze, dropping packet.\n",
dev->name);
fep->stats.rx_dropped++;
skbn = skb;
}
}
fep->rx_skbuff[curidx] = skbn;
CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE));
CBDW_DATLEN(bdp, 0);
CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
/*
* Update BD pointer to next entry.
*/
if ((sc & BD_ENET_RX_WRAP) == 0)
bdp++;
else
bdp = fep->rx_bd_base;
(*fep->ops->rx_bd_done)(dev);
}
fep->cur_rx = bdp;
dev->quota -= received;
*budget -= received;
if (rx_work_limit < 0)
return 1; /* not done */
/* done */
netif_rx_complete(dev);
(*fep->ops->napi_enable_rx)(dev);
return 0;
}
/* non NAPI receive function */
static int fs_enet_rx_non_napi(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
const struct fs_platform_info *fpi = fep->fpi;
cbd_t *bdp;
struct sk_buff *skb, *skbn, *skbt;
int received = 0;
u16 pkt_len, sc;
int curidx;
/*
* First, grab all of the stats for the incoming packet.
* These get messed up if we get called due to a busy condition.
*/
bdp = fep->cur_rx;
while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
curidx = bdp - fep->rx_bd_base;
/*
* Since we have allocated space to hold a complete frame,
* the last indicator should be set.
*/
if ((sc & BD_ENET_RX_LAST) == 0)
printk(KERN_WARNING DRV_MODULE_NAME
": %s rcv is not +last\n",
dev->name);
/*
* Check for errors.
*/
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
fep->stats.rx_errors++;
/* Frame too long or too short. */
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
fep->stats.rx_length_errors++;
/* Frame alignment */
if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
fep->stats.rx_frame_errors++;
/* CRC Error */
if (sc & BD_ENET_RX_CR)
fep->stats.rx_crc_errors++;
/* FIFO overrun */
if (sc & BD_ENET_RX_OV)
fep->stats.rx_crc_errors++;
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
skbn = skb;
} else {
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
/*
* Process the incoming frame.
*/
fep->stats.rx_packets++;
pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
fep->stats.rx_bytes += pkt_len + 4;
if (pkt_len <= fpi->rx_copybreak) {
/* +2 to make IP header L1 cache aligned */
skbn = dev_alloc_skb(pkt_len + 2);
if (skbn != NULL) {
skb_reserve(skbn, 2); /* align IP header */
memcpy(skbn->data, skb->data, pkt_len);
/* swap */
skbt = skb;
skb = skbn;
skbn = skbt;
}
} else
skbn = dev_alloc_skb(ENET_RX_FRSIZE);
if (skbn != NULL) {
skb->dev = dev;
skb_put(skb, pkt_len); /* Make room */
skb->protocol = eth_type_trans(skb, dev);
received++;
netif_rx(skb);
} else {
printk(KERN_WARNING DRV_MODULE_NAME
": %s Memory squeeze, dropping packet.\n",
dev->name);
fep->stats.rx_dropped++;
skbn = skb;
}
}
fep->rx_skbuff[curidx] = skbn;
CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE));
CBDW_DATLEN(bdp, 0);
CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
/*
* Update BD pointer to next entry.
*/
if ((sc & BD_ENET_RX_WRAP) == 0)
bdp++;
else
bdp = fep->rx_bd_base;
(*fep->ops->rx_bd_done)(dev);
}
fep->cur_rx = bdp;
return 0;
}
static void fs_enet_tx(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
cbd_t *bdp;
struct sk_buff *skb;
int dirtyidx, do_wake, do_restart;
u16 sc;
spin_lock(&fep->lock);
bdp = fep->dirty_tx;
do_wake = do_restart = 0;
while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
dirtyidx = bdp - fep->tx_bd_base;
if (fep->tx_free == fep->tx_ring)
break;
skb = fep->tx_skbuff[dirtyidx];
/*
* Check for errors.
*/
if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
if (sc & BD_ENET_TX_HB) /* No heartbeat */
fep->stats.tx_heartbeat_errors++;
if (sc & BD_ENET_TX_LC) /* Late collision */
fep->stats.tx_window_errors++;
if (sc & BD_ENET_TX_RL) /* Retrans limit */
fep->stats.tx_aborted_errors++;
if (sc & BD_ENET_TX_UN) /* Underrun */
fep->stats.tx_fifo_errors++;
if (sc & BD_ENET_TX_CSL) /* Carrier lost */
fep->stats.tx_carrier_errors++;
if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
fep->stats.tx_errors++;
do_restart = 1;
}
} else
fep->stats.tx_packets++;
if (sc & BD_ENET_TX_READY)
printk(KERN_WARNING DRV_MODULE_NAME
": %s HEY! Enet xmit interrupt and TX_READY.\n",
dev->name);
/*
* Deferred means some collisions occurred during transmit,
* but we eventually sent the packet OK.
*/
if (sc & BD_ENET_TX_DEF)
fep->stats.collisions++;
/* unmap */
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
skb->len, DMA_TO_DEVICE);
/*
* Free the sk buffer associated with this last transmit.
*/
dev_kfree_skb_irq(skb);
fep->tx_skbuff[dirtyidx] = NULL;
/*
* Update pointer to next buffer descriptor to be transmitted.
*/
if ((sc & BD_ENET_TX_WRAP) == 0)
bdp++;
else
bdp = fep->tx_bd_base;
/*
* Since we have freed up a buffer, the ring is no longer
* full.
*/
if (!fep->tx_free++)
do_wake = 1;
}
fep->dirty_tx = bdp;
if (do_restart)
(*fep->ops->tx_restart)(dev);
spin_unlock(&fep->lock);
if (do_wake)
netif_wake_queue(dev);
}
/*
* The interrupt handler.
* This is called from the MPC core interrupt.
*/
static irqreturn_t
fs_enet_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct fs_enet_private *fep;
const struct fs_platform_info *fpi;
u32 int_events;
u32 int_clr_events;
int nr, napi_ok;
int handled;
fep = netdev_priv(dev);
fpi = fep->fpi;
nr = 0;
while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) {
nr++;
int_clr_events = int_events;
if (fpi->use_napi)
int_clr_events &= ~fep->ev_napi_rx;
(*fep->ops->clear_int_events)(dev, int_clr_events);
if (int_events & fep->ev_err)
(*fep->ops->ev_error)(dev, int_events);
if (int_events & fep->ev_rx) {
if (!fpi->use_napi)
fs_enet_rx_non_napi(dev);
else {
napi_ok = netif_rx_schedule_prep(dev);
(*fep->ops->napi_disable_rx)(dev);
(*fep->ops->clear_int_events)(dev, fep->ev_napi_rx);
/* NOTE: it is possible for FCCs in NAPI mode */
/* to submit a spurious interrupt while in poll */
if (napi_ok)
__netif_rx_schedule(dev);
}
}
if (int_events & fep->ev_tx)
fs_enet_tx(dev);
}
handled = nr > 0;
return IRQ_RETVAL(handled);
}
void fs_init_bds(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
cbd_t *bdp;
struct sk_buff *skb;
int i;
fs_cleanup_bds(dev);
fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
fep->tx_free = fep->tx_ring;
fep->cur_rx = fep->rx_bd_base;
/*
* Initialize the receive buffer descriptors.
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
skb = dev_alloc_skb(ENET_RX_FRSIZE);
if (skb == NULL) {
printk(KERN_WARNING DRV_MODULE_NAME
": %s Memory squeeze, unable to allocate skb\n",
dev->name);
break;
}
fep->rx_skbuff[i] = skb;
skb->dev = dev;
CBDW_BUFADDR(bdp,
dma_map_single(fep->dev, skb->data,
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE));
CBDW_DATLEN(bdp, 0); /* zero */
CBDW_SC(bdp, BD_ENET_RX_EMPTY |
((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
}
/*
* if we failed, fillup remainder
*/
for (; i < fep->rx_ring; i++, bdp++) {
fep->rx_skbuff[i] = NULL;
CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
}
/*
* ...and the same for transmit.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
fep->tx_skbuff[i] = NULL;
CBDW_BUFADDR(bdp, 0);
CBDW_DATLEN(bdp, 0);
CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
}
}
void fs_cleanup_bds(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
struct sk_buff *skb;
cbd_t *bdp;
int i;
/*
* Reset SKB transmit buffers.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
if ((skb = fep->tx_skbuff[i]) == NULL)
continue;
/* unmap */
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
skb->len, DMA_TO_DEVICE);
fep->tx_skbuff[i] = NULL;
dev_kfree_skb(skb);
}
/*
* Reset SKB receive buffers
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
if ((skb = fep->rx_skbuff[i]) == NULL)
continue;
/* unmap */
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
fep->rx_skbuff[i] = NULL;
dev_kfree_skb(skb);
}
}
/**********************************************************************************/
static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
cbd_t *bdp;
int curidx;
u16 sc;
unsigned long flags;
spin_lock_irqsave(&fep->tx_lock, flags);
/*
* Fill in a Tx ring entry
*/
bdp = fep->cur_tx;
if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
netif_stop_queue(dev);
spin_unlock_irqrestore(&fep->tx_lock, flags);
/*
* Ooops. All transmit buffers are full. Bail out.
* This should not happen, since the tx queue should be stopped.
*/
printk(KERN_WARNING DRV_MODULE_NAME
": %s tx queue full!.\n", dev->name);
return NETDEV_TX_BUSY;
}
curidx = bdp - fep->tx_bd_base;
/*
* Clear all of the status flags.
*/
CBDC_SC(bdp, BD_ENET_TX_STATS);
/*
* Save skb pointer.
*/
fep->tx_skbuff[curidx] = skb;
fep->stats.tx_bytes += skb->len;
/*
* Push the data cache so the CPM does not get stale memory data.
*/
CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
skb->data, skb->len, DMA_TO_DEVICE));
CBDW_DATLEN(bdp, skb->len);
dev->trans_start = jiffies;
/*
* If this was the last BD in the ring, start at the beginning again.
*/
if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
fep->cur_tx++;
else
fep->cur_tx = fep->tx_bd_base;
if (!--fep->tx_free)
netif_stop_queue(dev);
/* Trigger transmission start */
sc = BD_ENET_TX_READY | BD_ENET_TX_INTR |
BD_ENET_TX_LAST | BD_ENET_TX_TC;
/* note that while FEC does not have this bit
* it marks it as available for software use
* yay for hw reuse :) */
if (skb->len <= 60)
sc |= BD_ENET_TX_PAD;
CBDS_SC(bdp, sc);
(*fep->ops->tx_kickstart)(dev);
spin_unlock_irqrestore(&fep->tx_lock, flags);
return NETDEV_TX_OK;
}
static int fs_request_irq(struct net_device *dev, int irq, const char *name,
irq_handler_t irqf)
{
struct fs_enet_private *fep = netdev_priv(dev);
(*fep->ops->pre_request_irq)(dev, irq);
return request_irq(irq, irqf, IRQF_SHARED, name, dev);
}
static void fs_free_irq(struct net_device *dev, int irq)
{
struct fs_enet_private *fep = netdev_priv(dev);
free_irq(irq, dev);
(*fep->ops->post_free_irq)(dev, irq);
}
static void fs_timeout(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
unsigned long flags;
int wake = 0;
fep->stats.tx_errors++;
spin_lock_irqsave(&fep->lock, flags);
if (dev->flags & IFF_UP) {
phy_stop(fep->phydev);
(*fep->ops->stop)(dev);
(*fep->ops->restart)(dev);
phy_start(fep->phydev);
}
phy_start(fep->phydev);
wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY);
spin_unlock_irqrestore(&fep->lock, flags);
if (wake)
netif_wake_queue(dev);
}
/*-----------------------------------------------------------------------------
* generic link-change handler - should be sufficient for most cases
*-----------------------------------------------------------------------------*/
static void generic_adjust_link(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
struct phy_device *phydev = fep->phydev;
int new_state = 0;
if (phydev->link) {
/* adjust to duplex mode */
if (phydev->duplex != fep->oldduplex){
new_state = 1;
fep->oldduplex = phydev->duplex;
}
if (phydev->speed != fep->oldspeed) {
new_state = 1;
fep->oldspeed = phydev->speed;
}
if (!fep->oldlink) {
new_state = 1;
fep->oldlink = 1;
netif_schedule(dev);
netif_carrier_on(dev);
netif_start_queue(dev);
}
if (new_state)
fep->ops->restart(dev);
} else if (fep->oldlink) {
new_state = 1;
fep->oldlink = 0;
fep->oldspeed = 0;
fep->oldduplex = -1;
netif_carrier_off(dev);
netif_stop_queue(dev);
}
if (new_state && netif_msg_link(fep))
phy_print_status(phydev);
}
static void fs_adjust_link(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
unsigned long flags;
spin_lock_irqsave(&fep->lock, flags);
if(fep->ops->adjust_link)
fep->ops->adjust_link(dev);
else
generic_adjust_link(dev);
spin_unlock_irqrestore(&fep->lock, flags);
}
static int fs_init_phy(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
struct phy_device *phydev;
fep->oldlink = 0;
fep->oldspeed = 0;
fep->oldduplex = -1;
if(fep->fpi->bus_id)
phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0,
PHY_INTERFACE_MODE_MII);
else {
printk("No phy bus ID specified in BSP code\n");
return -EINVAL;
}
if (IS_ERR(phydev)) {
printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
return PTR_ERR(phydev);
}
fep->phydev = phydev;
return 0;
}
static int fs_enet_open(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
int r;
int err;
/* Install our interrupt handler. */
r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
if (r != 0) {
printk(KERN_ERR DRV_MODULE_NAME
": %s Could not allocate FS_ENET IRQ!", dev->name);
return -EINVAL;
}
err = fs_init_phy(dev);
if(err)
return err;
phy_start(fep->phydev);
return 0;
}
static int fs_enet_close(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
unsigned long flags;
netif_stop_queue(dev);
netif_carrier_off(dev);
phy_stop(fep->phydev);
spin_lock_irqsave(&fep->lock, flags);
(*fep->ops->stop)(dev);
spin_unlock_irqrestore(&fep->lock, flags);
/* release any irqs */
phy_disconnect(fep->phydev);
fep->phydev = NULL;
fs_free_irq(dev, fep->interrupt);
return 0;
}
static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
return &fep->stats;
}
/*************************************************************************/
static void fs_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strcpy(info->driver, DRV_MODULE_NAME);
strcpy(info->version, DRV_MODULE_VERSION);
}
static int fs_get_regs_len(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
return (*fep->ops->get_regs_len)(dev);
}
static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
void *p)
{
struct fs_enet_private *fep = netdev_priv(dev);
unsigned long flags;
int r, len;
len = regs->len;
spin_lock_irqsave(&fep->lock, flags);
r = (*fep->ops->get_regs)(dev, p, &len);
spin_unlock_irqrestore(&fep->lock, flags);
if (r == 0)
regs->version = 0;
}
static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct fs_enet_private *fep = netdev_priv(dev);
return phy_ethtool_gset(fep->phydev, cmd);
}
static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct fs_enet_private *fep = netdev_priv(dev);
phy_ethtool_sset(fep->phydev, cmd);
return 0;
}
static int fs_nway_reset(struct net_device *dev)
{
return 0;
}
static u32 fs_get_msglevel(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
return fep->msg_enable;
}
static void fs_set_msglevel(struct net_device *dev, u32 value)
{
struct fs_enet_private *fep = netdev_priv(dev);
fep->msg_enable = value;
}
static const struct ethtool_ops fs_ethtool_ops = {
.get_drvinfo = fs_get_drvinfo,
.get_regs_len = fs_get_regs_len,
.get_settings = fs_get_settings,
.set_settings = fs_set_settings,
.nway_reset = fs_nway_reset,
.get_link = ethtool_op_get_link,
.get_msglevel = fs_get_msglevel,
.set_msglevel = fs_set_msglevel,
.get_tx_csum = ethtool_op_get_tx_csum,
.set_tx_csum = ethtool_op_set_tx_csum, /* local! */
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_regs = fs_get_regs,
};
static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct fs_enet_private *fep = netdev_priv(dev);
struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
unsigned long flags;
int rc;
if (!netif_running(dev))
return -EINVAL;
spin_lock_irqsave(&fep->lock, flags);
rc = phy_mii_ioctl(fep->phydev, mii, cmd);
spin_unlock_irqrestore(&fep->lock, flags);
return rc;
}
extern int fs_mii_connect(struct net_device *dev);
extern void fs_mii_disconnect(struct net_device *dev);
static struct net_device *fs_init_instance(struct device *dev,
struct fs_platform_info *fpi)
{
struct net_device *ndev = NULL;
struct fs_enet_private *fep = NULL;
int privsize, i, r, err = 0, registered = 0;
fpi->fs_no = fs_get_id(fpi);
/* guard */
if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX)
return ERR_PTR(-EINVAL);
privsize = sizeof(*fep) + (sizeof(struct sk_buff **) *
(fpi->rx_ring + fpi->tx_ring));
ndev = alloc_etherdev(privsize);
if (!ndev) {
err = -ENOMEM;
goto err;
}
SET_MODULE_OWNER(ndev);
fep = netdev_priv(ndev);
memset(fep, 0, privsize); /* clear everything */
fep->dev = dev;
dev_set_drvdata(dev, ndev);
fep->fpi = fpi;
if (fpi->init_ioports)
fpi->init_ioports((struct fs_platform_info *)fpi);
#ifdef CONFIG_FS_ENET_HAS_FEC
if (fs_get_fec_index(fpi->fs_no) >= 0)
fep->ops = &fs_fec_ops;
#endif
#ifdef CONFIG_FS_ENET_HAS_SCC
if (fs_get_scc_index(fpi->fs_no) >=0 )
fep->ops = &fs_scc_ops;
#endif
#ifdef CONFIG_FS_ENET_HAS_FCC
if (fs_get_fcc_index(fpi->fs_no) >= 0)
fep->ops = &fs_fcc_ops;
#endif
if (fep->ops == NULL) {
printk(KERN_ERR DRV_MODULE_NAME
": %s No matching ops found (%d).\n",
ndev->name, fpi->fs_no);
err = -EINVAL;
goto err;
}
r = (*fep->ops->setup_data)(ndev);
if (r != 0) {
printk(KERN_ERR DRV_MODULE_NAME
": %s setup_data failed\n",
ndev->name);
err = r;
goto err;
}
/* point rx_skbuff, tx_skbuff */
fep->rx_skbuff = (struct sk_buff **)&fep[1];
fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
/* init locks */
spin_lock_init(&fep->lock);
spin_lock_init(&fep->tx_lock);
/*
* Set the Ethernet address.
*/
for (i = 0; i < 6; i++)
ndev->dev_addr[i] = fpi->macaddr[i];
r = (*fep->ops->allocate_bd)(ndev);
if (fep->ring_base == NULL) {
printk(KERN_ERR DRV_MODULE_NAME
": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
err = r;
goto err;
}
/*
* Set receive and transmit descriptor base.
*/
fep->rx_bd_base = fep->ring_base;
fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
/* initialize ring size variables */
fep->tx_ring = fpi->tx_ring;
fep->rx_ring = fpi->rx_ring;
/*
* The FEC Ethernet specific entries in the device structure.
*/
ndev->open = fs_enet_open;
ndev->hard_start_xmit = fs_enet_start_xmit;
ndev->tx_timeout = fs_timeout;
ndev->watchdog_timeo = 2 * HZ;
ndev->stop = fs_enet_close;
ndev->get_stats = fs_enet_get_stats;
ndev->set_multicast_list = fs_set_multicast_list;
if (fpi->use_napi) {
ndev->poll = fs_enet_rx_napi;
ndev->weight = fpi->napi_weight;
}
ndev->ethtool_ops = &fs_ethtool_ops;
ndev->do_ioctl = fs_ioctl;
init_timer(&fep->phy_timer_list);
netif_carrier_off(ndev);
err = register_netdev(ndev);
if (err != 0) {
printk(KERN_ERR DRV_MODULE_NAME
": %s register_netdev failed.\n", ndev->name);
goto err;
}
registered = 1;
return ndev;
err:
if (ndev != NULL) {
if (registered)
unregister_netdev(ndev);
if (fep != NULL) {
(*fep->ops->free_bd)(ndev);
(*fep->ops->cleanup_data)(ndev);
}
free_netdev(ndev);
}
dev_set_drvdata(dev, NULL);
return ERR_PTR(err);
}
static int fs_cleanup_instance(struct net_device *ndev)
{
struct fs_enet_private *fep;
const struct fs_platform_info *fpi;
struct device *dev;
if (ndev == NULL)
return -EINVAL;
fep = netdev_priv(ndev);
if (fep == NULL)
return -EINVAL;
fpi = fep->fpi;
unregister_netdev(ndev);
dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
fep->ring_base, fep->ring_mem_addr);
/* reset it */
(*fep->ops->cleanup_data)(ndev);
dev = fep->dev;
if (dev != NULL) {
dev_set_drvdata(dev, NULL);
fep->dev = NULL;
}
free_netdev(ndev);
return 0;
}
/**************************************************************************************/
/* handy pointer to the immap */
void *fs_enet_immap = NULL;
static int setup_immap(void)
{
phys_addr_t paddr = 0;
unsigned long size = 0;
#ifdef CONFIG_CPM1
paddr = IMAP_ADDR;
size = 0x10000; /* map 64K */
#endif
#ifdef CONFIG_CPM2
paddr = CPM_MAP_ADDR;
size = 0x40000; /* map 256 K */
#endif
fs_enet_immap = ioremap(paddr, size);
if (fs_enet_immap == NULL)
return -EBADF; /* XXX ahem; maybe just BUG_ON? */
return 0;
}
static void cleanup_immap(void)
{
if (fs_enet_immap != NULL) {
iounmap(fs_enet_immap);
fs_enet_immap = NULL;
}
}
/**************************************************************************************/
static int __devinit fs_enet_probe(struct device *dev)
{
struct net_device *ndev;
/* no fixup - no device */
if (dev->platform_data == NULL) {
printk(KERN_INFO "fs_enet: "
"probe called with no platform data; "
"remove unused devices\n");
return -ENODEV;
}
ndev = fs_init_instance(dev, dev->platform_data);
if (IS_ERR(ndev))
return PTR_ERR(ndev);
return 0;
}
static int fs_enet_remove(struct device *dev)
{
return fs_cleanup_instance(dev_get_drvdata(dev));
}
static struct device_driver fs_enet_fec_driver = {
.name = "fsl-cpm-fec",
.bus = &platform_bus_type,
.probe = fs_enet_probe,
.remove = fs_enet_remove,
#ifdef CONFIG_PM
/* .suspend = fs_enet_suspend, TODO */
/* .resume = fs_enet_resume, TODO */
#endif
};
static struct device_driver fs_enet_scc_driver = {
.name = "fsl-cpm-scc",
.bus = &platform_bus_type,
.probe = fs_enet_probe,
.remove = fs_enet_remove,
#ifdef CONFIG_PM
/* .suspend = fs_enet_suspend, TODO */
/* .resume = fs_enet_resume, TODO */
#endif
};
static struct device_driver fs_enet_fcc_driver = {
.name = "fsl-cpm-fcc",
.bus = &platform_bus_type,
.probe = fs_enet_probe,
.remove = fs_enet_remove,
#ifdef CONFIG_PM
/* .suspend = fs_enet_suspend, TODO */
/* .resume = fs_enet_resume, TODO */
#endif
};
static int __init fs_init(void)
{
int r;
printk(KERN_INFO
"%s", version);
r = setup_immap();
if (r != 0)
return r;
#ifdef CONFIG_FS_ENET_HAS_FCC
/* let's insert mii stuff */
r = fs_enet_mdio_bb_init();
if (r != 0) {
printk(KERN_ERR DRV_MODULE_NAME
"BB PHY init failed.\n");
return r;
}
r = driver_register(&fs_enet_fcc_driver);
if (r != 0)
goto err;
#endif
#ifdef CONFIG_FS_ENET_HAS_FEC
r = fs_enet_mdio_fec_init();
if (r != 0) {
printk(KERN_ERR DRV_MODULE_NAME
"FEC PHY init failed.\n");
return r;
}
r = driver_register(&fs_enet_fec_driver);
if (r != 0)
goto err;
#endif
#ifdef CONFIG_FS_ENET_HAS_SCC
r = driver_register(&fs_enet_scc_driver);
if (r != 0)
goto err;
#endif
return 0;
err:
cleanup_immap();
return r;
}
static void __exit fs_cleanup(void)
{
driver_unregister(&fs_enet_fec_driver);
driver_unregister(&fs_enet_fcc_driver);
driver_unregister(&fs_enet_scc_driver);
cleanup_immap();
}
/**************************************************************************************/
module_init(fs_init);
module_exit(fs_cleanup);
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