#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
#include <asm/cacheflush.h>
+
+#ifndef CONFIG_ARCH_MXC
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
+#endif
#include "fec.h"
-#if defined(CONFIG_FEC2)
-#define FEC_MAX_PORTS 2
+#ifdef CONFIG_ARCH_MXC
+#include <mach/hardware.h>
+#define FEC_ALIGNMENT 0xf
#else
-#define FEC_MAX_PORTS 1
-#endif
-
-#if defined(CONFIG_M5272)
-#define HAVE_mii_link_interrupt
+#define FEC_ALIGNMENT 0x3
#endif
/*
* Define the fixed address of the FEC hardware.
*/
-static unsigned int fec_hw[] = {
#if defined(CONFIG_M5272)
- (MCF_MBAR + 0x840),
-#elif defined(CONFIG_M527x)
- (MCF_MBAR + 0x1000),
- (MCF_MBAR + 0x1800),
-#elif defined(CONFIG_M523x) || defined(CONFIG_M528x)
- (MCF_MBAR + 0x1000),
-#elif defined(CONFIG_M520x)
- (MCF_MBAR+0x30000),
-#elif defined(CONFIG_M532x)
- (MCF_MBAR+0xfc030000),
-#endif
-};
+#define HAVE_mii_link_interrupt
static unsigned char fec_mac_default[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
#else
#define FEC_FLASHMAC 0
#endif
+#endif /* CONFIG_M5272 */
-/* Forward declarations of some structures to support different PHYs
-*/
+/* Forward declarations of some structures to support different PHYs */
typedef struct {
uint mii_data;
#error "FEC: descriptor ring size constants too large"
#endif
-/* Interrupt events/masks.
-*/
+/* Interrupt events/masks. */
#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
* account when setting it.
*/
#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
- defined(CONFIG_M520x) || defined(CONFIG_M532x)
+ defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARCH_MXC)
#define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16)
#else
#define OPT_FRAME_SIZE 0
*/
struct fec_enet_private {
/* Hardware registers of the FEC device */
- volatile fec_t *hwp;
+ void __iomem *hwp;
struct net_device *netdev;
+ struct clk *clk;
+
/* The saved address of a sent-in-place packet/buffer, for skfree(). */
unsigned char *tx_bounce[TX_RING_SIZE];
struct sk_buff* tx_skbuff[TX_RING_SIZE];
+ struct sk_buff* rx_skbuff[RX_RING_SIZE];
ushort skb_cur;
ushort skb_dirty;
- /* CPM dual port RAM relative addresses.
- */
- cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */
- cbd_t *tx_bd_base;
- cbd_t *cur_rx, *cur_tx; /* The next free ring entry */
- cbd_t *dirty_tx; /* The ring entries to be free()ed. */
+ /* CPM dual port RAM relative addresses */
+ dma_addr_t bd_dma;
+ /* Address of Rx and Tx buffers */
+ struct bufdesc *rx_bd_base;
+ struct bufdesc *tx_bd_base;
+ /* The next free ring entry */
+ struct bufdesc *cur_rx, *cur_tx;
+ /* The ring entries to be free()ed */
+ struct bufdesc *dirty_tx;
+
uint tx_full;
/* hold while accessing the HW like ringbuffer for tx/rx but not MAC */
spinlock_t hw_lock;
int full_duplex;
};
-static int fec_enet_open(struct net_device *dev);
-static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
static void fec_enet_mii(struct net_device *dev);
static irqreturn_t fec_enet_interrupt(int irq, void * dev_id);
static void fec_enet_tx(struct net_device *dev);
static void fec_enet_rx(struct net_device *dev);
static int fec_enet_close(struct net_device *dev);
-static void set_multicast_list(struct net_device *dev);
static void fec_restart(struct net_device *dev, int duplex);
static void fec_stop(struct net_device *dev);
-static void fec_set_mac_address(struct net_device *dev);
/* MII processing. We keep this as simple as possible. Requests are
static int mii_queue(struct net_device *dev, int request,
void (*func)(uint, struct net_device *));
-/* Make MII read/write commands for the FEC.
-*/
+/* Make MII read/write commands for the FEC */
#define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18))
#define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | \
(VAL & 0xffff))
#define mk_mii_end 0
-/* Transmitter timeout.
-*/
-#define TX_TIMEOUT (2*HZ)
+/* Transmitter timeout */
+#define TX_TIMEOUT (2 * HZ)
-/* Register definitions for the PHY.
-*/
+/* Register definitions for the PHY */
#define MII_REG_CR 0 /* Control Register */
#define MII_REG_SR 1 /* Status Register */
static int
fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct fec_enet_private *fep;
- volatile fec_t *fecp;
- volatile cbd_t *bdp;
+ struct fec_enet_private *fep = netdev_priv(dev);
+ struct bufdesc *bdp;
+ void *bufaddr;
unsigned short status;
unsigned long flags;
- fep = netdev_priv(dev);
- fecp = (volatile fec_t*)dev->base_addr;
-
if (!fep->link) {
/* Link is down or autonegotiation is in progress. */
- return 1;
+ return NETDEV_TX_BUSY;
}
spin_lock_irqsave(&fep->hw_lock, flags);
bdp = fep->cur_tx;
status = bdp->cbd_sc;
-#ifndef final_version
+
if (status & BD_ENET_TX_READY) {
/* Ooops. All transmit buffers are full. Bail out.
* This should not happen, since dev->tbusy should be set.
*/
printk("%s: tx queue full!.\n", dev->name);
spin_unlock_irqrestore(&fep->hw_lock, flags);
- return 1;
+ return NETDEV_TX_BUSY;
}
-#endif
- /* Clear all of the status flags.
- */
+ /* Clear all of the status flags */
status &= ~BD_ENET_TX_STATS;
- /* Set buffer length and buffer pointer.
- */
- bdp->cbd_bufaddr = __pa(skb->data);
+ /* Set buffer length and buffer pointer */
+ bufaddr = skb->data;
bdp->cbd_datlen = skb->len;
/*
- * On some FEC implementations data must be aligned on
- * 4-byte boundaries. Use bounce buffers to copy data
- * and get it aligned. Ugh.
+ * On some FEC implementations data must be aligned on
+ * 4-byte boundaries. Use bounce buffers to copy data
+ * and get it aligned. Ugh.
*/
- if (bdp->cbd_bufaddr & 0x3) {
+ if (((unsigned long) bufaddr) & FEC_ALIGNMENT) {
unsigned int index;
index = bdp - fep->tx_bd_base;
- memcpy(fep->tx_bounce[index], (void *) bdp->cbd_bufaddr, bdp->cbd_datlen);
- bdp->cbd_bufaddr = __pa(fep->tx_bounce[index]);
+ memcpy(fep->tx_bounce[index], (void *)skb->data, skb->len);
+ bufaddr = fep->tx_bounce[index];
}
- /* Save skb pointer.
- */
+ /* Save skb pointer */
fep->tx_skbuff[fep->skb_cur] = skb;
dev->stats.tx_bytes += skb->len;
/* Push the data cache so the CPM does not get stale memory
* data.
*/
- flush_dcache_range((unsigned long)skb->data,
- (unsigned long)skb->data + skb->len);
+ bdp->cbd_bufaddr = dma_map_single(&dev->dev, bufaddr,
+ FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
/* Send it on its way. Tell FEC it's ready, interrupt when done,
* it's the last BD of the frame, and to put the CRC on the end.
*/
-
status |= (BD_ENET_TX_READY | BD_ENET_TX_INTR
| BD_ENET_TX_LAST | BD_ENET_TX_TC);
bdp->cbd_sc = status;
dev->trans_start = jiffies;
/* Trigger transmission start */
- fecp->fec_x_des_active = 0;
+ writel(0, fep->hwp + FEC_X_DES_ACTIVE);
- /* If this was the last BD in the ring, start at the beginning again.
- */
- if (status & BD_ENET_TX_WRAP) {
+ /* If this was the last BD in the ring, start at the beginning again. */
+ if (status & BD_ENET_TX_WRAP)
bdp = fep->tx_bd_base;
- } else {
+ else
bdp++;
- }
if (bdp == fep->dirty_tx) {
fep->tx_full = 1;
netif_stop_queue(dev);
}
- fep->cur_tx = (cbd_t *)bdp;
+ fep->cur_tx = bdp;
spin_unlock_irqrestore(&fep->hw_lock, flags);
- return 0;
+ return NETDEV_TX_OK;
}
static void
{
struct fec_enet_private *fep = netdev_priv(dev);
- printk("%s: transmit timed out.\n", dev->name);
dev->stats.tx_errors++;
-#ifndef final_version
- {
- int i;
- cbd_t *bdp;
-
- printk("Ring data dump: cur_tx %lx%s, dirty_tx %lx cur_rx: %lx\n",
- (unsigned long)fep->cur_tx, fep->tx_full ? " (full)" : "",
- (unsigned long)fep->dirty_tx,
- (unsigned long)fep->cur_rx);
-
- bdp = fep->tx_bd_base;
- printk(" tx: %u buffers\n", TX_RING_SIZE);
- for (i = 0 ; i < TX_RING_SIZE; i++) {
- printk(" %08x: %04x %04x %08x\n",
- (uint) bdp,
- bdp->cbd_sc,
- bdp->cbd_datlen,
- (int) bdp->cbd_bufaddr);
- bdp++;
- }
- bdp = fep->rx_bd_base;
- printk(" rx: %lu buffers\n", (unsigned long) RX_RING_SIZE);
- for (i = 0 ; i < RX_RING_SIZE; i++) {
- printk(" %08x: %04x %04x %08x\n",
- (uint) bdp,
- bdp->cbd_sc,
- bdp->cbd_datlen,
- (int) bdp->cbd_bufaddr);
- bdp++;
- }
- }
-#endif
fec_restart(dev, fep->full_duplex);
netif_wake_queue(dev);
}
-/* The interrupt handler.
- * This is called from the MPC core interrupt.
- */
static irqreturn_t
fec_enet_interrupt(int irq, void * dev_id)
{
struct net_device *dev = dev_id;
- volatile fec_t *fecp;
+ struct fec_enet_private *fep = netdev_priv(dev);
uint int_events;
irqreturn_t ret = IRQ_NONE;
- fecp = (volatile fec_t*)dev->base_addr;
-
- /* Get the interrupt events that caused us to be here.
- */
do {
- int_events = fecp->fec_ievent;
- fecp->fec_ievent = int_events;
+ int_events = readl(fep->hwp + FEC_IEVENT);
+ writel(int_events, fep->hwp + FEC_IEVENT);
- /* Handle receive event in its own function.
- */
if (int_events & FEC_ENET_RXF) {
ret = IRQ_HANDLED;
fec_enet_rx(dev);
}
/* Transmit OK, or non-fatal error. Update the buffer
- descriptors. FEC handles all errors, we just discover
- them as part of the transmit process.
- */
+ * descriptors. FEC handles all errors, we just discover
+ * them as part of the transmit process.
+ */
if (int_events & FEC_ENET_TXF) {
ret = IRQ_HANDLED;
fec_enet_tx(dev);
fec_enet_tx(struct net_device *dev)
{
struct fec_enet_private *fep;
- volatile cbd_t *bdp;
+ struct bufdesc *bdp;
unsigned short status;
struct sk_buff *skb;
fep = netdev_priv(dev);
- spin_lock_irq(&fep->hw_lock);
+ spin_lock(&fep->hw_lock);
bdp = fep->dirty_tx;
while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) {
- if (bdp == fep->cur_tx && fep->tx_full == 0) break;
+ if (bdp == fep->cur_tx && fep->tx_full == 0)
+ break;
+
+ dma_unmap_single(&dev->dev, bdp->cbd_bufaddr, FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
+ bdp->cbd_bufaddr = 0;
skb = fep->tx_skbuff[fep->skb_dirty];
/* Check for errors. */
dev->stats.tx_packets++;
}
-#ifndef final_version
if (status & BD_ENET_TX_READY)
printk("HEY! Enet xmit interrupt and TX_READY.\n");
-#endif
+
/* Deferred means some collisions occurred during transmit,
* but we eventually sent the packet OK.
*/
if (status & BD_ENET_TX_DEF)
dev->stats.collisions++;
- /* Free the sk buffer associated with this last transmit.
- */
+ /* Free the sk buffer associated with this last transmit */
dev_kfree_skb_any(skb);
fep->tx_skbuff[fep->skb_dirty] = NULL;
fep->skb_dirty = (fep->skb_dirty + 1) & TX_RING_MOD_MASK;
- /* Update pointer to next buffer descriptor to be transmitted.
- */
+ /* Update pointer to next buffer descriptor to be transmitted */
if (status & BD_ENET_TX_WRAP)
bdp = fep->tx_bd_base;
else
bdp++;
- /* Since we have freed up a buffer, the ring is no longer
- * full.
+ /* Since we have freed up a buffer, the ring is no longer full
*/
if (fep->tx_full) {
fep->tx_full = 0;
netif_wake_queue(dev);
}
}
- fep->dirty_tx = (cbd_t *)bdp;
- spin_unlock_irq(&fep->hw_lock);
+ fep->dirty_tx = bdp;
+ spin_unlock(&fep->hw_lock);
}
static void
fec_enet_rx(struct net_device *dev)
{
- struct fec_enet_private *fep;
- volatile fec_t *fecp;
- volatile cbd_t *bdp;
+ struct fec_enet_private *fep = netdev_priv(dev);
+ struct bufdesc *bdp;
unsigned short status;
struct sk_buff *skb;
ushort pkt_len;
flush_cache_all();
#endif
- fep = netdev_priv(dev);
- fecp = (volatile fec_t*)dev->base_addr;
-
- spin_lock_irq(&fep->hw_lock);
+ spin_lock(&fep->hw_lock);
/* 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 (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) {
+ while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) {
-#ifndef final_version
- /* Since we have allocated space to hold a complete frame,
- * the last indicator should be set.
- */
- if ((status & BD_ENET_RX_LAST) == 0)
- printk("FEC ENET: rcv is not +last\n");
-#endif
+ /* Since we have allocated space to hold a complete frame,
+ * the last indicator should be set.
+ */
+ if ((status & BD_ENET_RX_LAST) == 0)
+ printk("FEC ENET: rcv is not +last\n");
- if (!fep->opened)
- goto rx_processing_done;
+ if (!fep->opened)
+ goto rx_processing_done;
- /* Check for errors. */
- if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
+ /* Check for errors. */
+ if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
BD_ENET_RX_CR | BD_ENET_RX_OV)) {
- dev->stats.rx_errors++;
- if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) {
- /* Frame too long or too short. */
- dev->stats.rx_length_errors++;
+ dev->stats.rx_errors++;
+ if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) {
+ /* Frame too long or too short. */
+ dev->stats.rx_length_errors++;
+ }
+ if (status & BD_ENET_RX_NO) /* Frame alignment */
+ dev->stats.rx_frame_errors++;
+ if (status & BD_ENET_RX_CR) /* CRC Error */
+ dev->stats.rx_crc_errors++;
+ if (status & BD_ENET_RX_OV) /* FIFO overrun */
+ dev->stats.rx_fifo_errors++;
}
- if (status & BD_ENET_RX_NO) /* Frame alignment */
+
+ /* Report late collisions as a frame error.
+ * On this error, the BD is closed, but we don't know what we
+ * have in the buffer. So, just drop this frame on the floor.
+ */
+ if (status & BD_ENET_RX_CL) {
+ dev->stats.rx_errors++;
dev->stats.rx_frame_errors++;
- if (status & BD_ENET_RX_CR) /* CRC Error */
- dev->stats.rx_crc_errors++;
- if (status & BD_ENET_RX_OV) /* FIFO overrun */
- dev->stats.rx_fifo_errors++;
- }
+ goto rx_processing_done;
+ }
- /* Report late collisions as a frame error.
- * On this error, the BD is closed, but we don't know what we
- * have in the buffer. So, just drop this frame on the floor.
- */
- if (status & BD_ENET_RX_CL) {
- dev->stats.rx_errors++;
- dev->stats.rx_frame_errors++;
- goto rx_processing_done;
- }
+ /* Process the incoming frame. */
+ dev->stats.rx_packets++;
+ pkt_len = bdp->cbd_datlen;
+ dev->stats.rx_bytes += pkt_len;
+ data = (__u8*)__va(bdp->cbd_bufaddr);
- /* Process the incoming frame.
- */
- dev->stats.rx_packets++;
- pkt_len = bdp->cbd_datlen;
- dev->stats.rx_bytes += pkt_len;
- data = (__u8*)__va(bdp->cbd_bufaddr);
-
- /* This does 16 byte alignment, exactly what we need.
- * The packet length includes FCS, but we don't want to
- * include that when passing upstream as it messes up
- * bridging applications.
- */
- skb = dev_alloc_skb(pkt_len-4);
+ dma_unmap_single(NULL, bdp->cbd_bufaddr, bdp->cbd_datlen,
+ DMA_FROM_DEVICE);
- if (skb == NULL) {
- printk("%s: Memory squeeze, dropping packet.\n", dev->name);
- dev->stats.rx_dropped++;
- } else {
- skb_put(skb,pkt_len-4); /* Make room */
- skb_copy_to_linear_data(skb, data, pkt_len-4);
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb);
- }
- rx_processing_done:
+ /* This does 16 byte alignment, exactly what we need.
+ * The packet length includes FCS, but we don't want to
+ * include that when passing upstream as it messes up
+ * bridging applications.
+ */
+ skb = dev_alloc_skb(pkt_len - 4 + NET_IP_ALIGN);
- /* Clear the status flags for this buffer.
- */
- status &= ~BD_ENET_RX_STATS;
+ if (unlikely(!skb)) {
+ printk("%s: Memory squeeze, dropping packet.\n",
+ dev->name);
+ dev->stats.rx_dropped++;
+ } else {
+ skb_reserve(skb, NET_IP_ALIGN);
+ skb_put(skb, pkt_len - 4); /* Make room */
+ skb_copy_to_linear_data(skb, data, pkt_len - 4);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ }
- /* Mark the buffer empty.
- */
- status |= BD_ENET_RX_EMPTY;
- bdp->cbd_sc = status;
+ bdp->cbd_bufaddr = dma_map_single(NULL, data, bdp->cbd_datlen,
+ DMA_FROM_DEVICE);
+rx_processing_done:
+ /* Clear the status flags for this buffer */
+ status &= ~BD_ENET_RX_STATS;
- /* Update BD pointer to next entry.
- */
- if (status & BD_ENET_RX_WRAP)
- bdp = fep->rx_bd_base;
- else
- bdp++;
+ /* Mark the buffer empty */
+ status |= BD_ENET_RX_EMPTY;
+ bdp->cbd_sc = status;
-#if 1
- /* Doing this here will keep the FEC running while we process
- * incoming frames. On a heavily loaded network, we should be
- * able to keep up at the expense of system resources.
- */
- fecp->fec_r_des_active = 0;
-#endif
- } /* while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) */
- fep->cur_rx = (cbd_t *)bdp;
-
-#if 0
- /* Doing this here will allow us to process all frames in the
- * ring before the FEC is allowed to put more there. On a heavily
- * loaded network, some frames may be lost. Unfortunately, this
- * increases the interrupt overhead since we can potentially work
- * our way back to the interrupt return only to come right back
- * here.
- */
- fecp->fec_r_des_active = 0;
-#endif
+ /* Update BD pointer to next entry */
+ if (status & BD_ENET_RX_WRAP)
+ bdp = fep->rx_bd_base;
+ else
+ bdp++;
+ /* Doing this here will keep the FEC running while we process
+ * incoming frames. On a heavily loaded network, we should be
+ * able to keep up at the expense of system resources.
+ */
+ writel(0, fep->hwp + FEC_R_DES_ACTIVE);
+ }
+ fep->cur_rx = bdp;
- spin_unlock_irq(&fep->hw_lock);
+ spin_unlock(&fep->hw_lock);
}
-
/* called from interrupt context */
static void
fec_enet_mii(struct net_device *dev)
{
struct fec_enet_private *fep;
- volatile fec_t *ep;
mii_list_t *mip;
- uint mii_reg;
fep = netdev_priv(dev);
- spin_lock_irq(&fep->mii_lock);
-
- ep = fep->hwp;
- mii_reg = ep->fec_mii_data;
+ spin_lock(&fep->mii_lock);
if ((mip = mii_head) == NULL) {
printk("MII and no head!\n");
}
if (mip->mii_func != NULL)
- (*(mip->mii_func))(mii_reg, dev);
+ (*(mip->mii_func))(readl(fep->hwp + FEC_MII_DATA), dev);
mii_head = mip->mii_next;
mip->mii_next = mii_free;
mii_free = mip;
if ((mip = mii_head) != NULL)
- ep->fec_mii_data = mip->mii_regval;
+ writel(mip->mii_regval, fep->hwp + FEC_MII_DATA);
unlock:
- spin_unlock_irq(&fep->mii_lock);
+ spin_unlock(&fep->mii_lock);
}
static int
-mii_queue(struct net_device *dev, int regval, void (*func)(uint, struct net_device *))
+mii_queue_unlocked(struct net_device *dev, int regval,
+ void (*func)(uint, struct net_device *))
{
struct fec_enet_private *fep;
- unsigned long flags;
mii_list_t *mip;
int retval;
- /* Add PHY address to register command.
- */
+ /* Add PHY address to register command */
fep = netdev_priv(dev);
- spin_lock_irqsave(&fep->mii_lock, flags);
regval |= fep->phy_addr << 23;
retval = 0;
mii_tail = mip;
} else {
mii_head = mii_tail = mip;
- fep->hwp->fec_mii_data = regval;
+ writel(regval, fep->hwp + FEC_MII_DATA);
}
} else {
retval = 1;
}
+ return retval;
+}
+
+static int
+mii_queue(struct net_device *dev, int regval,
+ void (*func)(uint, struct net_device *))
+{
+ struct fec_enet_private *fep;
+ unsigned long flags;
+ int retval;
+ fep = netdev_priv(dev);
+ spin_lock_irqsave(&fep->mii_lock, flags);
+ retval = mii_queue_unlocked(dev, regval, func);
spin_unlock_irqrestore(&fep->mii_lock, flags);
return retval;
}
/* register definitions for the 8721 */
#define MII_KS8721BL_RXERCR 21
-#define MII_KS8721BL_ICSR 22
+#define MII_KS8721BL_ICSR 27
#define MII_KS8721BL_PHYCR 31
static phy_cmd_t const phy_cmd_ks8721bl_config[] = {
#ifdef HAVE_mii_link_interrupt
static irqreturn_t
mii_link_interrupt(int irq, void * dev_id);
-#endif
-#if defined(CONFIG_M5272)
/*
- * Code specific to Coldfire 5272 setup.
+ * This is specific to the MII interrupt setup of the M5272EVB.
*/
-static void __inline__ fec_request_intrs(struct net_device *dev)
+static void __inline__ fec_request_mii_intr(struct net_device *dev)
{
- volatile unsigned long *icrp;
- static const struct idesc {
- char *name;
- unsigned short irq;
- irq_handler_t handler;
- } *idp, id[] = {
- { "fec(RX)", 86, fec_enet_interrupt },
- { "fec(TX)", 87, fec_enet_interrupt },
- { "fec(OTHER)", 88, fec_enet_interrupt },
- { "fec(MII)", 66, mii_link_interrupt },
- { NULL },
- };
-
- /* Setup interrupt handlers. */
- for (idp = id; idp->name; idp++) {
- if (request_irq(idp->irq, idp->handler, IRQF_DISABLED, idp->name, dev) != 0)
- printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, idp->irq);
- }
-
- /* Unmask interrupt at ColdFire 5272 SIM */
- icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR3);
- *icrp = 0x00000ddd;
- icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
- *icrp = 0x0d000000;
+ if (request_irq(66, mii_link_interrupt, IRQF_DISABLED, "fec(MII)", dev) != 0)
+ printk("FEC: Could not allocate fec(MII) IRQ(66)!\n");
}
-static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
+static void __inline__ fec_disable_phy_intr(struct net_device *dev)
{
- volatile fec_t *fecp;
-
- fecp = fep->hwp;
- fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
- fecp->fec_x_cntrl = 0x00;
-
- /*
- * Set MII speed to 2.5 MHz
- * See 5272 manual section 11.5.8: MSCR
- */
- fep->phy_speed = ((((MCF_CLK / 4) / (2500000 / 10)) + 5) / 10) * 2;
- fecp->fec_mii_speed = fep->phy_speed;
-
- fec_restart(dev, 0);
+ free_irq(66, dev);
}
+#endif
+#ifdef CONFIG_M5272
static void __inline__ fec_get_mac(struct net_device *dev)
{
struct fec_enet_private *fep = netdev_priv(dev);
- volatile fec_t *fecp;
unsigned char *iap, tmpaddr[ETH_ALEN];
- fecp = fep->hwp;
-
if (FEC_FLASHMAC) {
/*
* Get MAC address from FLASH.
(iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
iap = fec_mac_default;
} else {
- *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
- *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
+ *((unsigned long *) &tmpaddr[0]) = readl(fep->hwp + FEC_ADDR_LOW);
+ *((unsigned short *) &tmpaddr[4]) = (readl(fep->hwp + FEC_ADDR_HIGH) >> 16);
iap = &tmpaddr[0];
}
if (iap == fec_mac_default)
dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
}
+#endif
-static void __inline__ fec_disable_phy_intr(void)
-{
- volatile unsigned long *icrp;
- icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
- *icrp = 0x08000000;
-}
+/* ------------------------------------------------------------------------- */
-static void __inline__ fec_phy_ack_intr(void)
+static void mii_display_status(struct net_device *dev)
{
- volatile unsigned long *icrp;
- /* Acknowledge the interrupt */
- icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
- *icrp = 0x0d000000;
-}
+ struct fec_enet_private *fep = netdev_priv(dev);
+ volatile uint *s = &(fep->phy_status);
-/* ------------------------------------------------------------------------- */
+ if (!fep->link && !fep->old_link) {
+ /* Link is still down - don't print anything */
+ return;
+ }
-#elif defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
+ printk("%s: status: ", dev->name);
-/*
- * Code specific to Coldfire 5230/5231/5232/5234/5235,
- * the 5270/5271/5274/5275 and 5280/5282 setups.
- */
-static void __inline__ fec_request_intrs(struct net_device *dev)
-{
- struct fec_enet_private *fep;
- int b;
- static const struct idesc {
- char *name;
- unsigned short irq;
- } *idp, id[] = {
- { "fec(TXF)", 23 },
- { "fec(RXF)", 27 },
- { "fec(MII)", 29 },
- { NULL },
- };
+ if (!fep->link) {
+ printk("link down");
+ } else {
+ printk("link up");
- fep = netdev_priv(dev);
- b = (fep->index) ? 128 : 64;
+ switch(*s & PHY_STAT_SPMASK) {
+ case PHY_STAT_100FDX: printk(", 100MBit Full Duplex"); break;
+ case PHY_STAT_100HDX: printk(", 100MBit Half Duplex"); break;
+ case PHY_STAT_10FDX: printk(", 10MBit Full Duplex"); break;
+ case PHY_STAT_10HDX: printk(", 10MBit Half Duplex"); break;
+ default:
+ printk(", Unknown speed/duplex");
+ }
- /* Setup interrupt handlers. */
- for (idp = id; idp->name; idp++) {
- if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name, dev) != 0)
- printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq);
+ if (*s & PHY_STAT_ANC)
+ printk(", auto-negotiation complete");
}
- /* Unmask interrupts at ColdFire 5280/5282 interrupt controller */
- {
- volatile unsigned char *icrp;
- volatile unsigned long *imrp;
- int i, ilip;
-
- b = (fep->index) ? MCFICM_INTC1 : MCFICM_INTC0;
- icrp = (volatile unsigned char *) (MCF_IPSBAR + b +
- MCFINTC_ICR0);
- for (i = 23, ilip = 0x28; (i < 36); i++)
- icrp[i] = ilip--;
-
- imrp = (volatile unsigned long *) (MCF_IPSBAR + b +
- MCFINTC_IMRH);
- *imrp &= ~0x0000000f;
- imrp = (volatile unsigned long *) (MCF_IPSBAR + b +
- MCFINTC_IMRL);
- *imrp &= ~0xff800001;
- }
+ if (*s & PHY_STAT_FAULT)
+ printk(", remote fault");
-#if defined(CONFIG_M528x)
- /* Set up gpio outputs for MII lines */
- {
- volatile u16 *gpio_paspar;
- volatile u8 *gpio_pehlpar;
+ printk(".\n");
+}
- gpio_paspar = (volatile u16 *) (MCF_IPSBAR + 0x100056);
- gpio_pehlpar = (volatile u16 *) (MCF_IPSBAR + 0x100058);
- *gpio_paspar |= 0x0f00;
- *gpio_pehlpar = 0xc0;
- }
-#endif
+static void mii_display_config(struct work_struct *work)
+{
+ struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
+ struct net_device *dev = fep->netdev;
+ uint status = fep->phy_status;
-#if defined(CONFIG_M527x)
- /* Set up gpio outputs for MII lines */
- {
- volatile u8 *gpio_par_fec;
- volatile u16 *gpio_par_feci2c;
+ /*
+ ** When we get here, phy_task is already removed from
+ ** the workqueue. It is thus safe to allow to reuse it.
+ */
+ fep->mii_phy_task_queued = 0;
+ printk("%s: config: auto-negotiation ", dev->name);
+
+ if (status & PHY_CONF_ANE)
+ printk("on");
+ else
+ printk("off");
- gpio_par_feci2c = (volatile u16 *)(MCF_IPSBAR + 0x100082);
- /* Set up gpio outputs for FEC0 MII lines */
- gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100078);
+ if (status & PHY_CONF_100FDX)
+ printk(", 100FDX");
+ if (status & PHY_CONF_100HDX)
+ printk(", 100HDX");
+ if (status & PHY_CONF_10FDX)
+ printk(", 10FDX");
+ if (status & PHY_CONF_10HDX)
+ printk(", 10HDX");
+ if (!(status & PHY_CONF_SPMASK))
+ printk(", No speed/duplex selected?");
- *gpio_par_feci2c |= 0x0f00;
- *gpio_par_fec |= 0xc0;
+ if (status & PHY_CONF_LOOP)
+ printk(", loopback enabled");
-#if defined(CONFIG_FEC2)
- /* Set up gpio outputs for FEC1 MII lines */
- gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100079);
+ printk(".\n");
- *gpio_par_feci2c |= 0x00a0;
- *gpio_par_fec |= 0xc0;
-#endif /* CONFIG_FEC2 */
- }
-#endif /* CONFIG_M527x */
+ fep->sequence_done = 1;
}
-static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
+static void mii_relink(struct work_struct *work)
{
- volatile fec_t *fecp;
-
- fecp = fep->hwp;
- fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
- fecp->fec_x_cntrl = 0x00;
+ struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
+ struct net_device *dev = fep->netdev;
+ int duplex;
/*
- * Set MII speed to 2.5 MHz
- * See 5282 manual section 17.5.4.7: MSCR
- */
- fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
- fecp->fec_mii_speed = fep->phy_speed;
+ ** When we get here, phy_task is already removed from
+ ** the workqueue. It is thus safe to allow to reuse it.
+ */
+ fep->mii_phy_task_queued = 0;
+ fep->link = (fep->phy_status & PHY_STAT_LINK) ? 1 : 0;
+ mii_display_status(dev);
+ fep->old_link = fep->link;
- fec_restart(dev, 0);
+ if (fep->link) {
+ duplex = 0;
+ if (fep->phy_status
+ & (PHY_STAT_100FDX | PHY_STAT_10FDX))
+ duplex = 1;
+ fec_restart(dev, duplex);
+ } else
+ fec_stop(dev);
}
-static void __inline__ fec_get_mac(struct net_device *dev)
+/* mii_queue_relink is called in interrupt context from mii_link_interrupt */
+static void mii_queue_relink(uint mii_reg, struct net_device *dev)
{
struct fec_enet_private *fep = netdev_priv(dev);
- volatile fec_t *fecp;
- unsigned char *iap, tmpaddr[ETH_ALEN];
-
- fecp = fep->hwp;
-
- if (FEC_FLASHMAC) {
- /*
- * Get MAC address from FLASH.
- * If it is all 1's or 0's, use the default.
- */
- iap = FEC_FLASHMAC;
- if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
- (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
- iap = fec_mac_default;
- if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
- (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
- iap = fec_mac_default;
- } else {
- *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
- *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
- iap = &tmpaddr[0];
- }
-
- memcpy(dev->dev_addr, iap, ETH_ALEN);
- /* Adjust MAC if using default MAC address */
- if (iap == fec_mac_default)
- dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
-}
+ /*
+ * We cannot queue phy_task twice in the workqueue. It
+ * would cause an endless loop in the workqueue.
+ * Fortunately, if the last mii_relink entry has not yet been
+ * executed now, it will do the job for the current interrupt,
+ * which is just what we want.
+ */
+ if (fep->mii_phy_task_queued)
+ return;
-static void __inline__ fec_disable_phy_intr(void)
-{
+ fep->mii_phy_task_queued = 1;
+ INIT_WORK(&fep->phy_task, mii_relink);
+ schedule_work(&fep->phy_task);
}
-static void __inline__ fec_phy_ack_intr(void)
+/* mii_queue_config is called in interrupt context from fec_enet_mii */
+static void mii_queue_config(uint mii_reg, struct net_device *dev)
{
-}
+ struct fec_enet_private *fep = netdev_priv(dev);
-/* ------------------------------------------------------------------------- */
+ if (fep->mii_phy_task_queued)
+ return;
-#elif defined(CONFIG_M520x)
-
-/*
- * Code specific to Coldfire 520x
- */
-static void __inline__ fec_request_intrs(struct net_device *dev)
-{
- struct fec_enet_private *fep;
- int b;
- static const struct idesc {
- char *name;
- unsigned short irq;
- } *idp, id[] = {
- { "fec(TXF)", 23 },
- { "fec(RXF)", 27 },
- { "fec(MII)", 29 },
- { NULL },
- };
-
- fep = netdev_priv(dev);
- b = 64 + 13;
-
- /* Setup interrupt handlers. */
- for (idp = id; idp->name; idp++) {
- if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name,dev) != 0)
- printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq);
- }
-
- /* Unmask interrupts at ColdFire interrupt controller */
- {
- volatile unsigned char *icrp;
- volatile unsigned long *imrp;
-
- icrp = (volatile unsigned char *) (MCF_IPSBAR + MCFICM_INTC0 +
- MCFINTC_ICR0);
- for (b = 36; (b < 49); b++)
- icrp[b] = 0x04;
- imrp = (volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 +
- MCFINTC_IMRH);
- *imrp &= ~0x0001FFF0;
- }
- *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FEC) |= 0xf0;
- *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C) |= 0x0f;
-}
-
-static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
-{
- volatile fec_t *fecp;
-
- fecp = fep->hwp;
- fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
- fecp->fec_x_cntrl = 0x00;
-
- /*
- * Set MII speed to 2.5 MHz
- * See 5282 manual section 17.5.4.7: MSCR
- */
- fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
- fecp->fec_mii_speed = fep->phy_speed;
-
- fec_restart(dev, 0);
-}
-
-static void __inline__ fec_get_mac(struct net_device *dev)
-{
- struct fec_enet_private *fep = netdev_priv(dev);
- volatile fec_t *fecp;
- unsigned char *iap, tmpaddr[ETH_ALEN];
-
- fecp = fep->hwp;
-
- if (FEC_FLASHMAC) {
- /*
- * Get MAC address from FLASH.
- * If it is all 1's or 0's, use the default.
- */
- iap = FEC_FLASHMAC;
- if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
- (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
- iap = fec_mac_default;
- if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
- (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
- iap = fec_mac_default;
- } else {
- *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
- *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
- iap = &tmpaddr[0];
- }
-
- memcpy(dev->dev_addr, iap, ETH_ALEN);
-
- /* Adjust MAC if using default MAC address */
- if (iap == fec_mac_default)
- dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
-}
-
-static void __inline__ fec_disable_phy_intr(void)
-{
-}
-
-static void __inline__ fec_phy_ack_intr(void)
-{
-}
-
-/* ------------------------------------------------------------------------- */
-
-#elif defined(CONFIG_M532x)
-/*
- * Code specific for M532x
- */
-static void __inline__ fec_request_intrs(struct net_device *dev)
-{
- struct fec_enet_private *fep;
- int b;
- static const struct idesc {
- char *name;
- unsigned short irq;
- } *idp, id[] = {
- { "fec(TXF)", 36 },
- { "fec(RXF)", 40 },
- { "fec(MII)", 42 },
- { NULL },
- };
-
- fep = netdev_priv(dev);
- b = (fep->index) ? 128 : 64;
-
- /* Setup interrupt handlers. */
- for (idp = id; idp->name; idp++) {
- if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name,dev) != 0)
- printk("FEC: Could not allocate %s IRQ(%d)!\n",
- idp->name, b+idp->irq);
- }
-
- /* Unmask interrupts */
- MCF_INTC0_ICR36 = 0x2;
- MCF_INTC0_ICR37 = 0x2;
- MCF_INTC0_ICR38 = 0x2;
- MCF_INTC0_ICR39 = 0x2;
- MCF_INTC0_ICR40 = 0x2;
- MCF_INTC0_ICR41 = 0x2;
- MCF_INTC0_ICR42 = 0x2;
- MCF_INTC0_ICR43 = 0x2;
- MCF_INTC0_ICR44 = 0x2;
- MCF_INTC0_ICR45 = 0x2;
- MCF_INTC0_ICR46 = 0x2;
- MCF_INTC0_ICR47 = 0x2;
- MCF_INTC0_ICR48 = 0x2;
-
- MCF_INTC0_IMRH &= ~(
- MCF_INTC_IMRH_INT_MASK36 |
- MCF_INTC_IMRH_INT_MASK37 |
- MCF_INTC_IMRH_INT_MASK38 |
- MCF_INTC_IMRH_INT_MASK39 |
- MCF_INTC_IMRH_INT_MASK40 |
- MCF_INTC_IMRH_INT_MASK41 |
- MCF_INTC_IMRH_INT_MASK42 |
- MCF_INTC_IMRH_INT_MASK43 |
- MCF_INTC_IMRH_INT_MASK44 |
- MCF_INTC_IMRH_INT_MASK45 |
- MCF_INTC_IMRH_INT_MASK46 |
- MCF_INTC_IMRH_INT_MASK47 |
- MCF_INTC_IMRH_INT_MASK48 );
-
- /* Set up gpio outputs for MII lines */
- MCF_GPIO_PAR_FECI2C |= (0 |
- MCF_GPIO_PAR_FECI2C_PAR_MDC_EMDC |
- MCF_GPIO_PAR_FECI2C_PAR_MDIO_EMDIO);
- MCF_GPIO_PAR_FEC = (0 |
- MCF_GPIO_PAR_FEC_PAR_FEC_7W_FEC |
- MCF_GPIO_PAR_FEC_PAR_FEC_MII_FEC);
-}
-
-static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
-{
- volatile fec_t *fecp;
-
- fecp = fep->hwp;
- fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
- fecp->fec_x_cntrl = 0x00;
-
- /*
- * Set MII speed to 2.5 MHz
- */
- fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
- fecp->fec_mii_speed = fep->phy_speed;
-
- fec_restart(dev, 0);
-}
-
-static void __inline__ fec_get_mac(struct net_device *dev)
-{
- struct fec_enet_private *fep = netdev_priv(dev);
- volatile fec_t *fecp;
- unsigned char *iap, tmpaddr[ETH_ALEN];
-
- fecp = fep->hwp;
-
- if (FEC_FLASHMAC) {
- /*
- * Get MAC address from FLASH.
- * If it is all 1's or 0's, use the default.
- */
- iap = FEC_FLASHMAC;
- if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
- (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
- iap = fec_mac_default;
- if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
- (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
- iap = fec_mac_default;
- } else {
- *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
- *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
- iap = &tmpaddr[0];
- }
-
- memcpy(dev->dev_addr, iap, ETH_ALEN);
-
- /* Adjust MAC if using default MAC address */
- if (iap == fec_mac_default)
- dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
-}
-
-static void __inline__ fec_disable_phy_intr(void)
-{
-}
-
-static void __inline__ fec_phy_ack_intr(void)
-{
-}
-
-#endif
-
-/* ------------------------------------------------------------------------- */
-
-static void mii_display_status(struct net_device *dev)
-{
- struct fec_enet_private *fep = netdev_priv(dev);
- volatile uint *s = &(fep->phy_status);
-
- if (!fep->link && !fep->old_link) {
- /* Link is still down - don't print anything */
- return;
- }
-
- printk("%s: status: ", dev->name);
-
- if (!fep->link) {
- printk("link down");
- } else {
- printk("link up");
-
- switch(*s & PHY_STAT_SPMASK) {
- case PHY_STAT_100FDX: printk(", 100MBit Full Duplex"); break;
- case PHY_STAT_100HDX: printk(", 100MBit Half Duplex"); break;
- case PHY_STAT_10FDX: printk(", 10MBit Full Duplex"); break;
- case PHY_STAT_10HDX: printk(", 10MBit Half Duplex"); break;
- default:
- printk(", Unknown speed/duplex");
- }
-
- if (*s & PHY_STAT_ANC)
- printk(", auto-negotiation complete");
- }
-
- if (*s & PHY_STAT_FAULT)
- printk(", remote fault");
-
- printk(".\n");
-}
-
-static void mii_display_config(struct work_struct *work)
-{
- struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
- struct net_device *dev = fep->netdev;
- uint status = fep->phy_status;
-
- /*
- ** When we get here, phy_task is already removed from
- ** the workqueue. It is thus safe to allow to reuse it.
- */
- fep->mii_phy_task_queued = 0;
- printk("%s: config: auto-negotiation ", dev->name);
-
- if (status & PHY_CONF_ANE)
- printk("on");
- else
- printk("off");
-
- if (status & PHY_CONF_100FDX)
- printk(", 100FDX");
- if (status & PHY_CONF_100HDX)
- printk(", 100HDX");
- if (status & PHY_CONF_10FDX)
- printk(", 10FDX");
- if (status & PHY_CONF_10HDX)
- printk(", 10HDX");
- if (!(status & PHY_CONF_SPMASK))
- printk(", No speed/duplex selected?");
-
- if (status & PHY_CONF_LOOP)
- printk(", loopback enabled");
-
- printk(".\n");
-
- fep->sequence_done = 1;
-}
-
-static void mii_relink(struct work_struct *work)
-{
- struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
- struct net_device *dev = fep->netdev;
- int duplex;
-
- /*
- ** When we get here, phy_task is already removed from
- ** the workqueue. It is thus safe to allow to reuse it.
- */
- fep->mii_phy_task_queued = 0;
- fep->link = (fep->phy_status & PHY_STAT_LINK) ? 1 : 0;
- mii_display_status(dev);
- fep->old_link = fep->link;
-
- if (fep->link) {
- duplex = 0;
- if (fep->phy_status
- & (PHY_STAT_100FDX | PHY_STAT_10FDX))
- duplex = 1;
- fec_restart(dev, duplex);
- } else
- fec_stop(dev);
-
-#if 0
- enable_irq(fep->mii_irq);
-#endif
-
-}
-
-/* mii_queue_relink is called in interrupt context from mii_link_interrupt */
-static void mii_queue_relink(uint mii_reg, struct net_device *dev)
-{
- struct fec_enet_private *fep = netdev_priv(dev);
-
- /*
- ** We cannot queue phy_task twice in the workqueue. It
- ** would cause an endless loop in the workqueue.
- ** Fortunately, if the last mii_relink entry has not yet been
- ** executed now, it will do the job for the current interrupt,
- ** which is just what we want.
- */
- if (fep->mii_phy_task_queued)
- return;
-
- fep->mii_phy_task_queued = 1;
- INIT_WORK(&fep->phy_task, mii_relink);
- schedule_work(&fep->phy_task);
-}
-
-/* mii_queue_config is called in interrupt context from fec_enet_mii */
-static void mii_queue_config(uint mii_reg, struct net_device *dev)
-{
- struct fec_enet_private *fep = netdev_priv(dev);
-
- if (fep->mii_phy_task_queued)
- return;
-
- fep->mii_phy_task_queued = 1;
- INIT_WORK(&fep->phy_task, mii_display_config);
- schedule_work(&fep->phy_task);
-}
+ fep->mii_phy_task_queued = 1;
+ INIT_WORK(&fep->phy_task, mii_display_config);
+ schedule_work(&fep->phy_task);
+}
phy_cmd_t const phy_cmd_relink[] = {
{ mk_mii_read(MII_REG_CR), mii_queue_relink },
{ mk_mii_end, }
};
-/* Read remainder of PHY ID.
-*/
+/* Read remainder of PHY ID. */
static void
mii_discover_phy3(uint mii_reg, struct net_device *dev)
{
mii_discover_phy(uint mii_reg, struct net_device *dev)
{
struct fec_enet_private *fep;
- volatile fec_t *fecp;
uint phytype;
fep = netdev_priv(dev);
- fecp = fep->hwp;
if (fep->phy_addr < 32) {
if ((phytype = (mii_reg & 0xffff)) != 0xffff && phytype != 0) {
- /* Got first part of ID, now get remainder.
- */
+ /* Got first part of ID, now get remainder */
fep->phy_id = phytype << 16;
- mii_queue(dev, mk_mii_read(MII_REG_PHYIR2),
+ mii_queue_unlocked(dev, mk_mii_read(MII_REG_PHYIR2),
mii_discover_phy3);
} else {
fep->phy_addr++;
- mii_queue(dev, mk_mii_read(MII_REG_PHYIR1),
+ mii_queue_unlocked(dev, mk_mii_read(MII_REG_PHYIR1),
mii_discover_phy);
}
} else {
printk("FEC: No PHY device found.\n");
/* Disable external MII interface */
- fecp->fec_mii_speed = fep->phy_speed = 0;
- fec_disable_phy_intr();
+ writel(0, fep->hwp + FEC_MII_SPEED);
+ fep->phy_speed = 0;
+#ifdef HAVE_mii_link_interrupt
+ fec_disable_phy_intr(dev);
+#endif
}
}
-/* This interrupt occurs when the PHY detects a link change.
-*/
+/* This interrupt occurs when the PHY detects a link change */
#ifdef HAVE_mii_link_interrupt
static irqreturn_t
mii_link_interrupt(int irq, void * dev_id)
struct net_device *dev = dev_id;
struct fec_enet_private *fep = netdev_priv(dev);
- fec_phy_ack_intr();
-
-#if 0
- disable_irq(fep->mii_irq); /* disable now, enable later */
-#endif
-
mii_do_cmd(dev, fep->phy->ack_int);
mii_do_cmd(dev, phy_cmd_relink); /* restart and display status */
}
#endif
+static void fec_enet_free_buffers(struct net_device *dev)
+{
+ struct fec_enet_private *fep = netdev_priv(dev);
+ int i;
+ struct sk_buff *skb;
+ struct bufdesc *bdp;
+
+ bdp = fep->rx_bd_base;
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ skb = fep->rx_skbuff[i];
+
+ if (bdp->cbd_bufaddr)
+ dma_unmap_single(&dev->dev, bdp->cbd_bufaddr,
+ FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE);
+ if (skb)
+ dev_kfree_skb(skb);
+ bdp++;
+ }
+
+ bdp = fep->tx_bd_base;
+ for (i = 0; i < TX_RING_SIZE; i++)
+ kfree(fep->tx_bounce[i]);
+}
+
+static int fec_enet_alloc_buffers(struct net_device *dev)
+{
+ struct fec_enet_private *fep = netdev_priv(dev);
+ int i;
+ struct sk_buff *skb;
+ struct bufdesc *bdp;
+
+ bdp = fep->rx_bd_base;
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ skb = dev_alloc_skb(FEC_ENET_RX_FRSIZE);
+ if (!skb) {
+ fec_enet_free_buffers(dev);
+ return -ENOMEM;
+ }
+ fep->rx_skbuff[i] = skb;
+
+ bdp->cbd_bufaddr = dma_map_single(&dev->dev, skb->data,
+ FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE);
+ bdp->cbd_sc = BD_ENET_RX_EMPTY;
+ bdp++;
+ }
+
+ /* Set the last buffer to wrap. */
+ bdp--;
+ bdp->cbd_sc |= BD_SC_WRAP;
+
+ bdp = fep->tx_bd_base;
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ fep->tx_bounce[i] = kmalloc(FEC_ENET_TX_FRSIZE, GFP_KERNEL);
+
+ bdp->cbd_sc = 0;
+ bdp->cbd_bufaddr = 0;
+ bdp++;
+ }
+
+ /* Set the last buffer to wrap. */
+ bdp--;
+ bdp->cbd_sc |= BD_SC_WRAP;
+
+ return 0;
+}
+
static int
fec_enet_open(struct net_device *dev)
{
struct fec_enet_private *fep = netdev_priv(dev);
+ int ret;
/* I should reset the ring buffers here, but I don't yet know
* a simple way to do that.
*/
- fec_set_mac_address(dev);
+
+ ret = fec_enet_alloc_buffers(dev);
+ if (ret)
+ return ret;
fep->sequence_done = 0;
fep->link = 0;
+ fec_restart(dev, 1);
+
if (fep->phy) {
mii_do_cmd(dev, fep->phy->ack_int);
mii_do_cmd(dev, fep->phy->config);
schedule();
mii_do_cmd(dev, fep->phy->startup);
-
- /* Set the initial link state to true. A lot of hardware
- * based on this device does not implement a PHY interrupt,
- * so we are never notified of link change.
- */
- fep->link = 1;
- } else {
- fep->link = 1; /* lets just try it and see */
- /* no phy, go full duplex, it's most likely a hub chip */
- fec_restart(dev, 1);
}
+ /* Set the initial link state to true. A lot of hardware
+ * based on this device does not implement a PHY interrupt,
+ * so we are never notified of link change.
+ */
+ fep->link = 1;
+
netif_start_queue(dev);
fep->opened = 1;
- return 0; /* Success */
+ return 0;
}
static int
{
struct fec_enet_private *fep = netdev_priv(dev);
- /* Don't know what to do yet.
- */
+ /* Don't know what to do yet. */
fep->opened = 0;
netif_stop_queue(dev);
fec_stop(dev);
+ fec_enet_free_buffers(dev);
+
return 0;
}
static void set_multicast_list(struct net_device *dev)
{
- struct fec_enet_private *fep;
- volatile fec_t *ep;
+ struct fec_enet_private *fep = netdev_priv(dev);
struct dev_mc_list *dmi;
- unsigned int i, j, bit, data, crc;
+ unsigned int i, j, bit, data, crc, tmp;
unsigned char hash;
- fep = netdev_priv(dev);
- ep = fep->hwp;
+ if (dev->flags & IFF_PROMISC) {
+ tmp = readl(fep->hwp + FEC_R_CNTRL);
+ tmp |= 0x8;
+ writel(tmp, fep->hwp + FEC_R_CNTRL);
+ return;
+ }
- if (dev->flags&IFF_PROMISC) {
- ep->fec_r_cntrl |= 0x0008;
- } else {
+ tmp = readl(fep->hwp + FEC_R_CNTRL);
+ tmp &= ~0x8;
+ writel(tmp, fep->hwp + FEC_R_CNTRL);
- ep->fec_r_cntrl &= ~0x0008;
+ if (dev->flags & IFF_ALLMULTI) {
+ /* Catch all multicast addresses, so set the
+ * filter to all 1's
+ */
+ writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
- if (dev->flags & IFF_ALLMULTI) {
- /* Catch all multicast addresses, so set the
- * filter to all 1's.
- */
- ep->fec_grp_hash_table_high = 0xffffffff;
- ep->fec_grp_hash_table_low = 0xffffffff;
- } else {
- /* Clear filter and add the addresses in hash register.
- */
- ep->fec_grp_hash_table_high = 0;
- ep->fec_grp_hash_table_low = 0;
-
- dmi = dev->mc_list;
-
- for (j = 0; j < dev->mc_count; j++, dmi = dmi->next)
- {
- /* Only support group multicast for now.
- */
- if (!(dmi->dmi_addr[0] & 1))
- continue;
-
- /* calculate crc32 value of mac address
- */
- crc = 0xffffffff;
-
- for (i = 0; i < dmi->dmi_addrlen; i++)
- {
- data = dmi->dmi_addr[i];
- for (bit = 0; bit < 8; bit++, data >>= 1)
- {
- crc = (crc >> 1) ^
- (((crc ^ data) & 1) ? CRC32_POLY : 0);
- }
- }
-
- /* only upper 6 bits (HASH_BITS) are used
- which point to specific bit in he hash registers
- */
- hash = (crc >> (32 - HASH_BITS)) & 0x3f;
-
- if (hash > 31)
- ep->fec_grp_hash_table_high |= 1 << (hash - 32);
- else
- ep->fec_grp_hash_table_low |= 1 << hash;
+ return;
+ }
+
+ /* Clear filter and add the addresses in hash register
+ */
+ writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+
+ dmi = dev->mc_list;
+
+ for (j = 0; j < dev->mc_count; j++, dmi = dmi->next) {
+ /* Only support group multicast for now */
+ if (!(dmi->dmi_addr[0] & 1))
+ continue;
+
+ /* calculate crc32 value of mac address */
+ crc = 0xffffffff;
+
+ for (i = 0; i < dmi->dmi_addrlen; i++) {
+ data = dmi->dmi_addr[i];
+ for (bit = 0; bit < 8; bit++, data >>= 1) {
+ crc = (crc >> 1) ^
+ (((crc ^ data) & 1) ? CRC32_POLY : 0);
}
}
+
+ /* only upper 6 bits (HASH_BITS) are used
+ * which point to specific bit in he hash registers
+ */
+ hash = (crc >> (32 - HASH_BITS)) & 0x3f;
+
+ if (hash > 31) {
+ tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ tmp |= 1 << (hash - 32);
+ writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ } else {
+ tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ tmp |= 1 << hash;
+ writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ }
}
}
-/* Set a MAC change in hardware.
- */
-static void
-fec_set_mac_address(struct net_device *dev)
+/* Set a MAC change in hardware. */
+static int
+fec_set_mac_address(struct net_device *dev, void *p)
{
- volatile fec_t *fecp;
+ struct fec_enet_private *fep = netdev_priv(dev);
+ struct sockaddr *addr = p;
- fecp = ((struct fec_enet_private *)netdev_priv(dev))->hwp;
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
- /* Set station address. */
- fecp->fec_addr_low = dev->dev_addr[3] | (dev->dev_addr[2] << 8) |
- (dev->dev_addr[1] << 16) | (dev->dev_addr[0] << 24);
- fecp->fec_addr_high = (dev->dev_addr[5] << 16) |
- (dev->dev_addr[4] << 24);
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+ writel(dev->dev_addr[3] | (dev->dev_addr[2] << 8) |
+ (dev->dev_addr[1] << 16) | (dev->dev_addr[0] << 24),
+ fep->hwp + FEC_ADDR_LOW);
+ writel((dev->dev_addr[5] << 16) | (dev->dev_addr[4] << 24),
+ fep + FEC_ADDR_HIGH);
+ return 0;
}
-/* Initialize the FEC Ethernet on 860T (or ColdFire 5272).
- */
+static const struct net_device_ops fec_netdev_ops = {
+ .ndo_open = fec_enet_open,
+ .ndo_stop = fec_enet_close,
+ .ndo_start_xmit = fec_enet_start_xmit,
+ .ndo_set_multicast_list = set_multicast_list,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_tx_timeout = fec_timeout,
+ .ndo_set_mac_address = fec_set_mac_address,
+};
+
/*
* XXX: We need to clean up on failure exits here.
+ *
+ * index is only used in legacy code
*/
-int __init fec_enet_init(struct net_device *dev)
+static int fec_enet_init(struct net_device *dev, int index)
{
struct fec_enet_private *fep = netdev_priv(dev);
- unsigned long mem_addr;
- volatile cbd_t *bdp;
- cbd_t *cbd_base;
- volatile fec_t *fecp;
- int i, j;
- static int index = 0;
-
- /* Only allow us to be probed once. */
- if (index >= FEC_MAX_PORTS)
- return -ENXIO;
+ struct bufdesc *cbd_base;
+ int i;
- /* Allocate memory for buffer descriptors.
- */
- mem_addr = __get_free_page(GFP_KERNEL);
- if (mem_addr == 0) {
+ /* Allocate memory for buffer descriptors. */
+ cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma,
+ GFP_KERNEL);
+ if (!cbd_base) {
printk("FEC: allocate descriptor memory failed?\n");
return -ENOMEM;
}
spin_lock_init(&fep->hw_lock);
spin_lock_init(&fep->mii_lock);
- /* Create an Ethernet device instance.
- */
- fecp = (volatile fec_t *) fec_hw[index];
-
fep->index = index;
- fep->hwp = fecp;
+ fep->hwp = (void __iomem *)dev->base_addr;
fep->netdev = dev;
- /* Whack a reset. We should wait for this.
- */
- fecp->fec_ecntrl = 1;
- udelay(10);
-
- /* Set the Ethernet address. If using multiple Enets on the 8xx,
- * this needs some work to get unique addresses.
- *
- * This is our default MAC address unless the user changes
- * it via eth_mac_addr (our dev->set_mac_addr handler).
- */
+ /* Set the Ethernet address */
+#ifdef CONFIG_M5272
fec_get_mac(dev);
+#else
+ {
+ unsigned long l;
+ l = readl(fep->hwp + FEC_ADDR_LOW);
+ dev->dev_addr[0] = (unsigned char)((l & 0xFF000000) >> 24);
+ dev->dev_addr[1] = (unsigned char)((l & 0x00FF0000) >> 16);
+ dev->dev_addr[2] = (unsigned char)((l & 0x0000FF00) >> 8);
+ dev->dev_addr[3] = (unsigned char)((l & 0x000000FF) >> 0);
+ l = readl(fep->hwp + FEC_ADDR_HIGH);
+ dev->dev_addr[4] = (unsigned char)((l & 0xFF000000) >> 24);
+ dev->dev_addr[5] = (unsigned char)((l & 0x00FF0000) >> 16);
+ }
+#endif
- cbd_base = (cbd_t *)mem_addr;
- /* XXX: missing check for allocation failure */
-
- /* Set receive and transmit descriptor base.
- */
+ /* Set receive and transmit descriptor base. */
fep->rx_bd_base = cbd_base;
fep->tx_bd_base = cbd_base + RX_RING_SIZE;
- fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
- fep->cur_rx = fep->rx_bd_base;
-
- fep->skb_cur = fep->skb_dirty = 0;
-
- /* Initialize the receive buffer descriptors.
- */
- bdp = fep->rx_bd_base;
- for (i=0; i<FEC_ENET_RX_PAGES; i++) {
-
- /* Allocate a page.
- */
- mem_addr = __get_free_page(GFP_KERNEL);
- /* XXX: missing check for allocation failure */
-
- /* Initialize the BD for every fragment in the page.
- */
- for (j=0; j<FEC_ENET_RX_FRPPG; j++) {
- bdp->cbd_sc = BD_ENET_RX_EMPTY;
- bdp->cbd_bufaddr = __pa(mem_addr);
- mem_addr += FEC_ENET_RX_FRSIZE;
- bdp++;
- }
- }
-
- /* Set the last buffer to wrap.
- */
- bdp--;
- bdp->cbd_sc |= BD_SC_WRAP;
-
- /* ...and the same for transmmit.
- */
- bdp = fep->tx_bd_base;
- for (i=0, j=FEC_ENET_TX_FRPPG; i<TX_RING_SIZE; i++) {
- if (j >= FEC_ENET_TX_FRPPG) {
- mem_addr = __get_free_page(GFP_KERNEL);
- j = 1;
- } else {
- mem_addr += FEC_ENET_TX_FRSIZE;
- j++;
- }
- fep->tx_bounce[i] = (unsigned char *) mem_addr;
-
- /* Initialize the BD for every fragment in the page.
- */
- bdp->cbd_sc = 0;
- bdp->cbd_bufaddr = 0;
- bdp++;
- }
-
- /* Set the last buffer to wrap.
- */
- bdp--;
- bdp->cbd_sc |= BD_SC_WRAP;
-
- /* Set receive and transmit descriptor base.
- */
- fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base));
- fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base));
-
- /* Install our interrupt handlers. This varies depending on
- * the architecture.
- */
- fec_request_intrs(dev);
-
- fecp->fec_grp_hash_table_high = 0;
- fecp->fec_grp_hash_table_low = 0;
- fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
- fecp->fec_ecntrl = 2;
- fecp->fec_r_des_active = 0;
-#ifndef CONFIG_M5272
- fecp->fec_hash_table_high = 0;
- fecp->fec_hash_table_low = 0;
+#ifdef HAVE_mii_link_interrupt
+ fec_request_mii_intr(dev);
#endif
-
- dev->base_addr = (unsigned long)fecp;
-
- /* The FEC Ethernet specific entries in the device structure. */
- dev->open = fec_enet_open;
- dev->hard_start_xmit = fec_enet_start_xmit;
- dev->tx_timeout = fec_timeout;
+ /* The FEC Ethernet specific entries in the device structure */
dev->watchdog_timeo = TX_TIMEOUT;
- dev->stop = fec_enet_close;
- dev->set_multicast_list = set_multicast_list;
+ dev->netdev_ops = &fec_netdev_ops;
for (i=0; i<NMII-1; i++)
mii_cmds[i].mii_next = &mii_cmds[i+1];
mii_free = mii_cmds;
- /* setup MII interface */
- fec_set_mii(dev, fep);
-
- /* Clear and enable interrupts */
- fecp->fec_ievent = 0xffc00000;
- fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII);
+ /* Set MII speed to 2.5 MHz */
+ fep->phy_speed = ((((clk_get_rate(fep->clk) / 2 + 4999999)
+ / 2500000) / 2) & 0x3F) << 1;
+ fec_restart(dev, 0);
/* Queue up command to detect the PHY and initialize the
* remainder of the interface.
fep->phy_addr = 0;
mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy);
- index++;
return 0;
}
static void
fec_restart(struct net_device *dev, int duplex)
{
- struct fec_enet_private *fep;
- volatile cbd_t *bdp;
- volatile fec_t *fecp;
+ struct fec_enet_private *fep = netdev_priv(dev);
+ struct bufdesc *bdp;
int i;
- fep = netdev_priv(dev);
- fecp = fep->hwp;
-
- /* Whack a reset. We should wait for this.
- */
- fecp->fec_ecntrl = 1;
+ /* Whack a reset. We should wait for this. */
+ writel(1, fep->hwp + FEC_ECNTRL);
udelay(10);
- /* Clear any outstanding interrupt.
- */
- fecp->fec_ievent = 0xffc00000;
-
- /* Set station address.
- */
- fec_set_mac_address(dev);
+ /* Clear any outstanding interrupt. */
+ writel(0xffc00000, fep->hwp + FEC_IEVENT);
- /* Reset all multicast.
- */
- fecp->fec_grp_hash_table_high = 0;
- fecp->fec_grp_hash_table_low = 0;
+ /* Reset all multicast. */
+ writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+#ifndef CONFIG_M5272
+ writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
+ writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
+#endif
- /* Set maximum receive buffer size.
- */
- fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
+ /* Set maximum receive buffer size. */
+ writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE);
- /* Set receive and transmit descriptor base.
- */
- fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base));
- fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base));
+ /* Set receive and transmit descriptor base. */
+ writel(fep->bd_dma, fep->hwp + FEC_R_DES_START);
+ writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc) * RX_RING_SIZE,
+ fep->hwp + FEC_X_DES_START);
fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
fep->cur_rx = fep->rx_bd_base;
- /* Reset SKB transmit buffers.
- */
+ /* Reset SKB transmit buffers. */
fep->skb_cur = fep->skb_dirty = 0;
- for (i=0; i<=TX_RING_MOD_MASK; i++) {
- if (fep->tx_skbuff[i] != NULL) {
+ for (i = 0; i <= TX_RING_MOD_MASK; i++) {
+ if (fep->tx_skbuff[i]) {
dev_kfree_skb_any(fep->tx_skbuff[i]);
fep->tx_skbuff[i] = NULL;
}
}
- /* Initialize the receive buffer descriptors.
- */
+ /* Initialize the receive buffer descriptors. */
bdp = fep->rx_bd_base;
- for (i=0; i<RX_RING_SIZE; i++) {
+ for (i = 0; i < RX_RING_SIZE; i++) {
- /* Initialize the BD for every fragment in the page.
- */
+ /* Initialize the BD for every fragment in the page. */
bdp->cbd_sc = BD_ENET_RX_EMPTY;
bdp++;
}
- /* Set the last buffer to wrap.
- */
+ /* Set the last buffer to wrap */
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
- /* ...and the same for transmmit.
- */
+ /* ...and the same for transmit */
bdp = fep->tx_bd_base;
- for (i=0; i<TX_RING_SIZE; i++) {
+ for (i = 0; i < TX_RING_SIZE; i++) {
- /* Initialize the BD for every fragment in the page.
- */
+ /* Initialize the BD for every fragment in the page. */
bdp->cbd_sc = 0;
bdp->cbd_bufaddr = 0;
bdp++;
}
- /* Set the last buffer to wrap.
- */
+ /* Set the last buffer to wrap */
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
- /* Enable MII mode.
- */
+ /* Enable MII mode */
if (duplex) {
- fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;/* MII enable */
- fecp->fec_x_cntrl = 0x04; /* FD enable */
+ /* MII enable / FD enable */
+ writel(OPT_FRAME_SIZE | 0x04, fep->hwp + FEC_R_CNTRL);
+ writel(0x04, fep->hwp + FEC_X_CNTRL);
} else {
- /* MII enable|No Rcv on Xmit */
- fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x06;
- fecp->fec_x_cntrl = 0x00;
+ /* MII enable / No Rcv on Xmit */
+ writel(OPT_FRAME_SIZE | 0x06, fep->hwp + FEC_R_CNTRL);
+ writel(0x0, fep->hwp + FEC_X_CNTRL);
}
fep->full_duplex = duplex;
- /* Set MII speed.
- */
- fecp->fec_mii_speed = fep->phy_speed;
+ /* Set MII speed */
+ writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
- /* And last, enable the transmit and receive processing.
- */
- fecp->fec_ecntrl = 2;
- fecp->fec_r_des_active = 0;
+ /* And last, enable the transmit and receive processing */
+ writel(2, fep->hwp + FEC_ECNTRL);
+ writel(0, fep->hwp + FEC_R_DES_ACTIVE);
- /* Enable interrupts we wish to service.
- */
- fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII);
+ /* Enable interrupts we wish to service */
+ writel(FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII,
+ fep->hwp + FEC_IMASK);
}
static void
fec_stop(struct net_device *dev)
{
- volatile fec_t *fecp;
- struct fec_enet_private *fep;
-
- fep = netdev_priv(dev);
- fecp = fep->hwp;
+ struct fec_enet_private *fep = netdev_priv(dev);
- /*
- ** We cannot expect a graceful transmit stop without link !!!
- */
- if (fep->link)
- {
- fecp->fec_x_cntrl = 0x01; /* Graceful transmit stop */
+ /* We cannot expect a graceful transmit stop without link !!! */
+ if (fep->link) {
+ writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */
udelay(10);
- if (!(fecp->fec_ievent & FEC_ENET_GRA))
+ if (!(readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA))
printk("fec_stop : Graceful transmit stop did not complete !\n");
- }
+ }
- /* Whack a reset. We should wait for this.
- */
- fecp->fec_ecntrl = 1;
+ /* Whack a reset. We should wait for this. */
+ writel(1, fep->hwp + FEC_ECNTRL);
udelay(10);
- /* Clear outstanding MII command interrupts.
- */
- fecp->fec_ievent = FEC_ENET_MII;
+ /* Clear outstanding MII command interrupts. */
+ writel(FEC_ENET_MII, fep->hwp + FEC_IEVENT);
- fecp->fec_imask = FEC_ENET_MII;
- fecp->fec_mii_speed = fep->phy_speed;
+ writel(FEC_ENET_MII, fep->hwp + FEC_IMASK);
+ writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
}
-static int __init fec_enet_module_init(void)
+static int __devinit
+fec_probe(struct platform_device *pdev)
{
- struct net_device *dev;
- int i, err;
+ struct fec_enet_private *fep;
+ struct net_device *ndev;
+ int i, irq, ret = 0;
+ struct resource *r;
- printk("FEC ENET Version 0.2\n");
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r)
+ return -ENXIO;
- for (i = 0; (i < FEC_MAX_PORTS); i++) {
- dev = alloc_etherdev(sizeof(struct fec_enet_private));
- if (!dev)
- return -ENOMEM;
- err = fec_enet_init(dev);
- if (err) {
- free_netdev(dev);
- continue;
+ r = request_mem_region(r->start, resource_size(r), pdev->name);
+ if (!r)
+ return -EBUSY;
+
+ /* Init network device */
+ ndev = alloc_etherdev(sizeof(struct fec_enet_private));
+ if (!ndev)
+ return -ENOMEM;
+
+ SET_NETDEV_DEV(ndev, &pdev->dev);
+
+ /* setup board info structure */
+ fep = netdev_priv(ndev);
+ memset(fep, 0, sizeof(*fep));
+
+ ndev->base_addr = (unsigned long)ioremap(r->start, resource_size(r));
+
+ if (!ndev->base_addr) {
+ ret = -ENOMEM;
+ goto failed_ioremap;
+ }
+
+ platform_set_drvdata(pdev, ndev);
+
+ /* This device has up to three irqs on some platforms */
+ for (i = 0; i < 3; i++) {
+ irq = platform_get_irq(pdev, i);
+ if (i && irq < 0)
+ break;
+ ret = request_irq(irq, fec_enet_interrupt, IRQF_DISABLED, pdev->name, ndev);
+ if (ret) {
+ while (i >= 0) {
+ irq = platform_get_irq(pdev, i);
+ free_irq(irq, ndev);
+ i--;
+ }
+ goto failed_irq;
}
- if (register_netdev(dev) != 0) {
- /* XXX: missing cleanup here */
- free_netdev(dev);
- return -EIO;
+ }
+
+ fep->clk = clk_get(&pdev->dev, "fec_clk");
+ if (IS_ERR(fep->clk)) {
+ ret = PTR_ERR(fep->clk);
+ goto failed_clk;
+ }
+ clk_enable(fep->clk);
+
+ ret = fec_enet_init(ndev, 0);
+ if (ret)
+ goto failed_init;
+
+ ret = register_netdev(ndev);
+ if (ret)
+ goto failed_register;
+
+ return 0;
+
+failed_register:
+failed_init:
+ clk_disable(fep->clk);
+ clk_put(fep->clk);
+failed_clk:
+ for (i = 0; i < 3; i++) {
+ irq = platform_get_irq(pdev, i);
+ if (irq > 0)
+ free_irq(irq, ndev);
+ }
+failed_irq:
+ iounmap((void __iomem *)ndev->base_addr);
+failed_ioremap:
+ free_netdev(ndev);
+
+ return ret;
+}
+
+static int __devexit
+fec_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct fec_enet_private *fep = netdev_priv(ndev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ fec_stop(ndev);
+ clk_disable(fep->clk);
+ clk_put(fep->clk);
+ iounmap((void __iomem *)ndev->base_addr);
+ unregister_netdev(ndev);
+ free_netdev(ndev);
+ return 0;
+}
+
+static int
+fec_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct net_device *ndev = platform_get_drvdata(dev);
+ struct fec_enet_private *fep;
+
+ if (ndev) {
+ fep = netdev_priv(ndev);
+ if (netif_running(ndev)) {
+ netif_device_detach(ndev);
+ fec_stop(ndev);
}
+ }
+ return 0;
+}
- printk("%s: ethernet %pM\n", dev->name, dev->dev_addr);
+static int
+fec_resume(struct platform_device *dev)
+{
+ struct net_device *ndev = platform_get_drvdata(dev);
+
+ if (ndev) {
+ if (netif_running(ndev)) {
+ fec_enet_init(ndev, 0);
+ netif_device_attach(ndev);
+ }
}
return 0;
}
+static struct platform_driver fec_driver = {
+ .driver = {
+ .name = "fec",
+ .owner = THIS_MODULE,
+ },
+ .probe = fec_probe,
+ .remove = __devexit_p(fec_drv_remove),
+ .suspend = fec_suspend,
+ .resume = fec_resume,
+};
+
+static int __init
+fec_enet_module_init(void)
+{
+ printk(KERN_INFO "FEC Ethernet Driver\n");
+
+ return platform_driver_register(&fec_driver);
+}
+
+static void __exit
+fec_enet_cleanup(void)
+{
+ platform_driver_unregister(&fec_driver);
+}
+
+module_exit(fec_enet_cleanup);
module_init(fec_enet_module_init);
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff