/**
* struct ks8851_net - KS8851 driver private data
* @netdev: The network device we're bound to
- * @spidev: The spi device we're bound to.
- * @lock: Lock to ensure that the device is not accessed when busy.
* @statelock: Lock on this structure for tx list.
* @mii: The MII state information for the mii calls.
* @rxctrl: RX settings for @rxctrl_work.
- * @tx_work: Work queue for tx packets
* @rxctrl_work: Work queue for updating RX mode and multicast lists
* @txq: Queue of packets for transmission.
- * @spi_msg1: pre-setup SPI transfer with one message, @spi_xfer1.
- * @spi_msg2: pre-setup SPI transfer with two messages, @spi_xfer2.
* @txh: Space for generating packet TX header in DMA-able data
* @rxd: Space for receiving SPI data, in DMA-able space.
* @txd: Space for transmitting SPI data, in DMA-able space.
* @vdd_reg: Optional regulator supplying the chip
* @vdd_io: Optional digital power supply for IO
* @gpio: Optional reset_n gpio
- *
- * The @lock ensures that the chip is protected when certain operations are
- * in progress. When the read or write packet transfer is in progress, most
- * of the chip registers are not ccessible until the transfer is finished and
- * the DMA has been de-asserted.
+ * @lock: Bus access lock callback
+ * @unlock: Bus access unlock callback
+ * @rdreg16: 16bit register read callback
+ * @wrreg16: 16bit register write callback
+ * @rdfifo: FIFO read callback
+ * @wrfifo: FIFO write callback
+ * @start_xmit: start_xmit() implementation callback
+ * @rx_skb: rx_skb() implementation callback
+ * @flush_tx_work: flush_tx_work() implementation callback
*
* The @statelock is used to protect information in the structure which may
* need to be accessed via several sources, such as the network driver layer
*/
struct ks8851_net {
struct net_device *netdev;
- struct spi_device *spidev;
- struct mutex lock;
spinlock_t statelock;
union ks8851_tx_hdr txh ____cacheline_aligned;
struct mii_if_info mii;
struct ks8851_rxctrl rxctrl;
- struct work_struct tx_work;
struct work_struct rxctrl_work;
struct sk_buff_head txq;
- struct spi_message spi_msg1;
- struct spi_message spi_msg2;
- struct spi_transfer spi_xfer1;
- struct spi_transfer spi_xfer2[2];
-
struct eeprom_93cx6 eeprom;
struct regulator *vdd_reg;
struct regulator *vdd_io;
int gpio;
+
+ void (*lock)(struct ks8851_net *ks,
+ unsigned long *flags);
+ void (*unlock)(struct ks8851_net *ks,
+ unsigned long *flags);
+ unsigned int (*rdreg16)(struct ks8851_net *ks,
+ unsigned int reg);
+ void (*wrreg16)(struct ks8851_net *ks,
+ unsigned int reg, unsigned int val);
+ void (*rdfifo)(struct ks8851_net *ks, u8 *buff,
+ unsigned int len);
+ void (*wrfifo)(struct ks8851_net *ks,
+ struct sk_buff *txp, bool irq);
+ netdev_tx_t (*start_xmit)(struct sk_buff *skb,
+ struct net_device *dev);
+ void (*rx_skb)(struct ks8851_net *ks,
+ struct sk_buff *skb);
+ void (*flush_tx_work)(struct ks8851_net *ks);
+};
+
+/**
+ * struct ks8851_net_spi - KS8851 SPI driver private data
+ * @ks8851: KS8851 driver common private data
+ * @lock: Lock to ensure that the device is not accessed when busy.
+ * @tx_work: Work queue for tx packets
+ * @spidev: The spi device we're bound to.
+ * @spi_msg1: pre-setup SPI transfer with one message, @spi_xfer1.
+ * @spi_msg2: pre-setup SPI transfer with two messages, @spi_xfer2.
+ *
+ * The @lock ensures that the chip is protected when certain operations are
+ * in progress. When the read or write packet transfer is in progress, most
+ * of the chip registers are not ccessible until the transfer is finished and
+ * the DMA has been de-asserted.
+ */
+struct ks8851_net_spi {
+ struct ks8851_net ks8851;
+ struct mutex lock;
+ struct work_struct tx_work;
+ struct spi_device *spidev;
+ struct spi_message spi_msg1;
+ struct spi_message spi_msg2;
+ struct spi_transfer spi_xfer1;
+ struct spi_transfer spi_xfer2[2];
};
+#define to_ks8851_spi(ks) container_of((ks), struct ks8851_net_spi, ks8851)
+
static int msg_enable;
/* SPI frame opcodes */
/* turn register number and byte-enable mask into data for start of packet */
#define MK_OP(_byteen, _reg) (BYTE_EN(_byteen) | (_reg) << (8+2) | (_reg) >> 6)
+/**
+ * ks8851_lock_spi - register access lock for SPI
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Claim chip register access lock
+ */
+static void ks8851_lock_spi(struct ks8851_net *ks, unsigned long *flags)
+{
+ struct ks8851_net_spi *kss = to_ks8851_spi(ks);
+
+ mutex_lock(&kss->lock);
+}
+
+/**
+ * ks8851_unlock_spi - register access unlock for SPI
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Release chip register access lock
+ */
+static void ks8851_unlock_spi(struct ks8851_net *ks, unsigned long *flags)
+{
+ struct ks8851_net_spi *kss = to_ks8851_spi(ks);
+
+ mutex_unlock(&kss->lock);
+}
+
+/**
+ * ks8851_lock - register access lock
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Claim chip register access lock
+ */
+static void ks8851_lock(struct ks8851_net *ks, unsigned long *flags)
+{
+ ks->lock(ks, flags);
+}
+
+/**
+ * ks8851_unlock - register access unlock
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Release chip register access lock
+ */
+static void ks8851_unlock(struct ks8851_net *ks, unsigned long *flags)
+{
+ ks->unlock(ks, flags);
+}
+
/* SPI register read/write calls.
*
* All these calls issue SPI transactions to access the chip's registers. They
*/
/**
- * ks8851_wrreg16 - write 16bit register value to chip
+ * ks8851_wrreg16_spi - write 16bit register value to chip via SPI
* @ks: The chip state
* @reg: The register address
* @val: The value to write
*
* Issue a write to put the value @val into the register specified in @reg.
*/
-static void ks8851_wrreg16(struct ks8851_net *ks, unsigned reg, unsigned val)
+static void ks8851_wrreg16_spi(struct ks8851_net *ks, unsigned int reg,
+ unsigned int val)
{
- struct spi_transfer *xfer = &ks->spi_xfer1;
- struct spi_message *msg = &ks->spi_msg1;
+ struct ks8851_net_spi *kss = to_ks8851_spi(ks);
+ struct spi_transfer *xfer = &kss->spi_xfer1;
+ struct spi_message *msg = &kss->spi_msg1;
__le16 txb[2];
int ret;
xfer->rx_buf = NULL;
xfer->len = 4;
- ret = spi_sync(ks->spidev, msg);
+ ret = spi_sync(kss->spidev, msg);
if (ret < 0)
netdev_err(ks->netdev, "spi_sync() failed\n");
}
/**
- * ks8851_wrreg8 - write 8bit register value to chip
+ * ks8851_wrreg16 - write 16bit register value to chip
* @ks: The chip state
* @reg: The register address
* @val: The value to write
*
* Issue a write to put the value @val into the register specified in @reg.
*/
-static void ks8851_wrreg8(struct ks8851_net *ks, unsigned reg, unsigned val)
+static void ks8851_wrreg16(struct ks8851_net *ks, unsigned int reg,
+ unsigned int val)
{
- struct spi_transfer *xfer = &ks->spi_xfer1;
- struct spi_message *msg = &ks->spi_msg1;
- __le16 txb[2];
- int ret;
- int bit;
-
- bit = 1 << (reg & 3);
-
- txb[0] = cpu_to_le16(MK_OP(bit, reg) | KS_SPIOP_WR);
- txb[1] = val;
-
- xfer->tx_buf = txb;
- xfer->rx_buf = NULL;
- xfer->len = 3;
-
- ret = spi_sync(ks->spidev, msg);
- if (ret < 0)
- netdev_err(ks->netdev, "spi_sync() failed\n");
+ ks->wrreg16(ks, reg, val);
}
/**
static void ks8851_rdreg(struct ks8851_net *ks, unsigned op,
u8 *rxb, unsigned rxl)
{
+ struct ks8851_net_spi *kss = to_ks8851_spi(ks);
struct spi_transfer *xfer;
struct spi_message *msg;
__le16 *txb = (__le16 *)ks->txd;
txb[0] = cpu_to_le16(op | KS_SPIOP_RD);
- if (ks->spidev->master->flags & SPI_MASTER_HALF_DUPLEX) {
- msg = &ks->spi_msg2;
- xfer = ks->spi_xfer2;
+ if (kss->spidev->master->flags & SPI_MASTER_HALF_DUPLEX) {
+ msg = &kss->spi_msg2;
+ xfer = kss->spi_xfer2;
xfer->tx_buf = txb;
xfer->rx_buf = NULL;
xfer->rx_buf = trx;
xfer->len = rxl;
} else {
- msg = &ks->spi_msg1;
- xfer = &ks->spi_xfer1;
+ msg = &kss->spi_msg1;
+ xfer = &kss->spi_xfer1;
xfer->tx_buf = txb;
xfer->rx_buf = trx;
xfer->len = rxl + 2;
}
- ret = spi_sync(ks->spidev, msg);
+ ret = spi_sync(kss->spidev, msg);
if (ret < 0)
netdev_err(ks->netdev, "read: spi_sync() failed\n");
- else if (ks->spidev->master->flags & SPI_MASTER_HALF_DUPLEX)
+ else if (kss->spidev->master->flags & SPI_MASTER_HALF_DUPLEX)
memcpy(rxb, trx, rxl);
else
memcpy(rxb, trx + 2, rxl);
}
/**
- * ks8851_rdreg8 - read 8 bit register from device
- * @ks: The chip information
- * @reg: The register address
- *
- * Read a 8bit register from the chip, returning the result
-*/
-static unsigned ks8851_rdreg8(struct ks8851_net *ks, unsigned reg)
-{
- u8 rxb[1];
-
- ks8851_rdreg(ks, MK_OP(1 << (reg & 3), reg), rxb, 1);
- return rxb[0];
-}
-
-/**
- * ks8851_rdreg16 - read 16 bit register from device
+ * ks8851_rdreg16_spi - read 16 bit register from device via SPI
* @ks: The chip information
* @reg: The register address
*
* Read a 16bit register from the chip, returning the result
*/
-static unsigned ks8851_rdreg16(struct ks8851_net *ks, unsigned reg)
+static unsigned int ks8851_rdreg16_spi(struct ks8851_net *ks,
+ unsigned int reg)
{
__le16 rx = 0;
}
/**
- * ks8851_rdreg32 - read 32 bit register from device
+ * ks8851_rdreg16 - read 16 bit register from device
* @ks: The chip information
* @reg: The register address
*
- * Read a 32bit register from the chip.
- *
- * Note, this read requires the address be aligned to 4 bytes.
-*/
-static unsigned ks8851_rdreg32(struct ks8851_net *ks, unsigned reg)
+ * Read a 16bit register from the chip, returning the result
+ */
+static unsigned int ks8851_rdreg16(struct ks8851_net *ks,
+ unsigned int reg)
{
- __le32 rx = 0;
-
- WARN_ON(reg & 3);
-
- ks8851_rdreg(ks, MK_OP(0xf, reg), (u8 *)&rx, 4);
- return le32_to_cpu(rx);
+ return ks->rdreg16(ks, reg);
}
/**
static int ks8851_write_mac_addr(struct net_device *dev)
{
struct ks8851_net *ks = netdev_priv(dev);
+ unsigned long flags;
+ u16 val;
int i;
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
/*
* Wake up chip in case it was powered off when stopped; otherwise,
* the first write to the MAC address does not take effect.
*/
ks8851_set_powermode(ks, PMECR_PM_NORMAL);
- for (i = 0; i < ETH_ALEN; i++)
- ks8851_wrreg8(ks, KS_MAR(i), dev->dev_addr[i]);
+
+ for (i = 0; i < ETH_ALEN; i += 2) {
+ val = (dev->dev_addr[i] << 8) | dev->dev_addr[i + 1];
+ ks8851_wrreg16(ks, KS_MAR(i), val);
+ }
+
if (!netif_running(dev))
ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN);
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
return 0;
}
static void ks8851_read_mac_addr(struct net_device *dev)
{
struct ks8851_net *ks = netdev_priv(dev);
+ unsigned long flags;
+ u16 reg;
int i;
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
- for (i = 0; i < ETH_ALEN; i++)
- dev->dev_addr[i] = ks8851_rdreg8(ks, KS_MAR(i));
+ for (i = 0; i < ETH_ALEN; i += 2) {
+ reg = ks8851_rdreg16(ks, KS_MAR(i));
+ dev->dev_addr[i] = reg >> 8;
+ dev->dev_addr[i + 1] = reg & 0xff;
+ }
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
}
/**
* ks8851_init_mac - initialise the mac address
* @ks: The device structure
+ * @np: The device node pointer
*
* Get or create the initial mac address for the device and then set that
* into the station address register. A mac address supplied in the device
* we try that. If no valid mac address is found we use eth_random_addr()
* to create a new one.
*/
-static void ks8851_init_mac(struct ks8851_net *ks)
+static void ks8851_init_mac(struct ks8851_net *ks, struct device_node *np)
{
struct net_device *dev = ks->netdev;
const u8 *mac_addr;
- mac_addr = of_get_mac_address(ks->spidev->dev.of_node);
+ mac_addr = of_get_mac_address(np);
if (!IS_ERR(mac_addr)) {
ether_addr_copy(dev->dev_addr, mac_addr);
ks8851_write_mac_addr(dev);
}
/**
- * ks8851_rdfifo - read data from the receive fifo
+ * ks8851_rdfifo_spi - read data from the receive fifo via SPI
* @ks: The device state.
* @buff: The buffer address
* @len: The length of the data to read
* Issue an RXQ FIFO read command and read the @len amount of data from
* the FIFO into the buffer specified by @buff.
*/
-static void ks8851_rdfifo(struct ks8851_net *ks, u8 *buff, unsigned len)
+static void ks8851_rdfifo_spi(struct ks8851_net *ks, u8 *buff,
+ unsigned int len)
{
- struct spi_transfer *xfer = ks->spi_xfer2;
- struct spi_message *msg = &ks->spi_msg2;
+ struct ks8851_net_spi *kss = to_ks8851_spi(ks);
+ struct spi_transfer *xfer = kss->spi_xfer2;
+ struct spi_message *msg = &kss->spi_msg2;
u8 txb[1];
int ret;
xfer->tx_buf = NULL;
xfer->len = len;
- ret = spi_sync(ks->spidev, msg);
+ ret = spi_sync(kss->spidev, msg);
if (ret < 0)
netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);
}
rxpkt[12], rxpkt[13], rxpkt[14], rxpkt[15]);
}
+/**
+ * ks8851_rx_skb_spi - receive skbuff for SPI
+ * @ks: The device state
+ * @skb: The skbuff
+ */
+static void ks8851_rx_skb_spi(struct ks8851_net *ks, struct sk_buff *skb)
+{
+ netif_rx_ni(skb);
+}
+
+/**
+ * ks8851_rx_skb - receive skbuff
+ * @ks: The device state
+ * @skb: The skbuff
+ */
+static void ks8851_rx_skb(struct ks8851_net *ks, struct sk_buff *skb)
+{
+ ks->rx_skb(ks, skb);
+}
+
/**
* ks8851_rx_pkts - receive packets from the host
* @ks: The device information.
unsigned rxfc;
unsigned rxlen;
unsigned rxstat;
- u32 rxh;
u8 *rxpkt;
- rxfc = ks8851_rdreg8(ks, KS_RXFC);
+ rxfc = (ks8851_rdreg16(ks, KS_RXFCTR) >> 8) & 0xff;
netif_dbg(ks, rx_status, ks->netdev,
"%s: %d packets\n", __func__, rxfc);
*/
for (; rxfc != 0; rxfc--) {
- rxh = ks8851_rdreg32(ks, KS_RXFHSR);
- rxstat = rxh & 0xffff;
- rxlen = (rxh >> 16) & 0xfff;
+ rxstat = ks8851_rdreg16(ks, KS_RXFHSR);
+ rxlen = ks8851_rdreg16(ks, KS_RXFHBCR) & RXFHBCR_CNT_MASK;
netif_dbg(ks, rx_status, ks->netdev,
"rx: stat 0x%04x, len 0x%04x\n", rxstat, rxlen);
rxpkt = skb_put(skb, rxlen) - 8;
- ks8851_rdfifo(ks, rxpkt, rxalign + 8);
+ ks->rdfifo(ks, rxpkt, rxalign + 8);
if (netif_msg_pktdata(ks))
ks8851_dbg_dumpkkt(ks, rxpkt);
skb->protocol = eth_type_trans(skb, ks->netdev);
- netif_rx_ni(skb);
+ ks8851_rx_skb(ks, skb);
ks->netdev->stats.rx_packets++;
ks->netdev->stats.rx_bytes += rxlen;
static irqreturn_t ks8851_irq(int irq, void *_ks)
{
struct ks8851_net *ks = _ks;
- unsigned status;
unsigned handled = 0;
+ unsigned long flags;
+ unsigned int status;
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
status = ks8851_rdreg16(ks, KS_ISR);
ks8851_wrreg16(ks, KS_RXCR1, rxc->rxcr1);
}
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
if (status & IRQ_LCI)
mii_check_link(&ks->mii);
}
/**
- * ks8851_wrpkt - write packet to TX FIFO
+ * ks8851_wrpkt_spi - write packet to TX FIFO via SPI
* @ks: The device state.
* @txp: The sk_buff to transmit.
* @irq: IRQ on completion of the packet.
* needs, such as IRQ on completion. Send the header and the packet data to
* the device.
*/
-static void ks8851_wrpkt(struct ks8851_net *ks, struct sk_buff *txp, bool irq)
+static void ks8851_wrpkt_spi(struct ks8851_net *ks, struct sk_buff *txp,
+ bool irq)
{
- struct spi_transfer *xfer = ks->spi_xfer2;
- struct spi_message *msg = &ks->spi_msg2;
+ struct ks8851_net_spi *kss = to_ks8851_spi(ks);
+ struct spi_transfer *xfer = kss->spi_xfer2;
+ struct spi_message *msg = &kss->spi_msg2;
unsigned fid = 0;
int ret;
xfer->rx_buf = NULL;
xfer->len = ALIGN(txp->len, 4);
- ret = spi_sync(ks->spidev, msg);
+ ret = spi_sync(kss->spidev, msg);
if (ret < 0)
netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);
}
*/
static void ks8851_tx_work(struct work_struct *work)
{
- struct ks8851_net *ks = container_of(work, struct ks8851_net, tx_work);
+ struct ks8851_net_spi *kss;
+ struct ks8851_net *ks;
+ unsigned long flags;
struct sk_buff *txb;
- bool last = skb_queue_empty(&ks->txq);
+ bool last;
+
+ kss = container_of(work, struct ks8851_net_spi, tx_work);
+ ks = &kss->ks8851;
+ last = skb_queue_empty(&ks->txq);
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
while (!last) {
txb = skb_dequeue(&ks->txq);
if (txb != NULL) {
ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
- ks8851_wrpkt(ks, txb, last);
+ ks->wrfifo(ks, txb, last);
ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
ks8851_wrreg16(ks, KS_TXQCR, TXQCR_METFE);
}
}
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
+}
+
+/**
+ * ks8851_flush_tx_work_spi - flush outstanding TX work for SPI
+ * @ks: The device state
+ */
+static void ks8851_flush_tx_work_spi(struct ks8851_net *ks)
+{
+ struct ks8851_net_spi *kss = to_ks8851_spi(ks);
+
+ flush_work(&kss->tx_work);
+}
+
+/**
+ * ks8851_flush_tx_work - flush outstanding TX work
+ * @ks: The device state
+ */
+static void ks8851_flush_tx_work(struct ks8851_net *ks)
+{
+ if (ks->flush_tx_work)
+ ks->flush_tx_work(ks);
}
/**
static int ks8851_net_open(struct net_device *dev)
{
struct ks8851_net *ks = netdev_priv(dev);
+ unsigned long flags;
int ret;
ret = request_threaded_irq(dev->irq, NULL, ks8851_irq,
/* lock the card, even if we may not actually be doing anything
* else at the moment */
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
netif_dbg(ks, ifup, ks->netdev, "opening\n");
ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
/* clear then enable interrupts */
-
-#define STD_IRQ (IRQ_LCI | /* Link Change */ \
- IRQ_TXI | /* TX done */ \
- IRQ_RXI | /* RX done */ \
- IRQ_SPIBEI | /* SPI bus error */ \
- IRQ_TXPSI | /* TX process stop */ \
- IRQ_RXPSI) /* RX process stop */
-
- ks->rc_ier = STD_IRQ;
- ks8851_wrreg16(ks, KS_ISR, STD_IRQ);
- ks8851_wrreg16(ks, KS_IER, STD_IRQ);
+ ks8851_wrreg16(ks, KS_ISR, ks->rc_ier);
+ ks8851_wrreg16(ks, KS_IER, ks->rc_ier);
netif_start_queue(ks->netdev);
netif_dbg(ks, ifup, ks->netdev, "network device up\n");
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
mii_check_link(&ks->mii);
return 0;
}
static int ks8851_net_stop(struct net_device *dev)
{
struct ks8851_net *ks = netdev_priv(dev);
+ unsigned long flags;
netif_info(ks, ifdown, dev, "shutting down\n");
netif_stop_queue(dev);
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
/* turn off the IRQs and ack any outstanding */
ks8851_wrreg16(ks, KS_IER, 0x0000);
ks8851_wrreg16(ks, KS_ISR, 0xffff);
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
/* stop any outstanding work */
- flush_work(&ks->tx_work);
+ ks8851_flush_tx_work(ks);
flush_work(&ks->rxctrl_work);
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
/* shutdown RX process */
ks8851_wrreg16(ks, KS_RXCR1, 0x0000);
/* set powermode to soft power down to save power */
ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN);
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
/* ensure any queued tx buffers are dumped */
while (!skb_queue_empty(&ks->txq)) {
}
/**
- * ks8851_start_xmit - transmit packet
+ * ks8851_start_xmit_spi - transmit packet using SPI
* @skb: The buffer to transmit
* @dev: The device used to transmit the packet.
*
* and secondly so we can round up more than one packet to transmit which
* means we can try and avoid generating too many transmit done interrupts.
*/
-static netdev_tx_t ks8851_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
+static netdev_tx_t ks8851_start_xmit_spi(struct sk_buff *skb,
+ struct net_device *dev)
{
struct ks8851_net *ks = netdev_priv(dev);
unsigned needed = calc_txlen(skb->len);
netdev_tx_t ret = NETDEV_TX_OK;
+ struct ks8851_net_spi *kss;
+
+ kss = to_ks8851_spi(ks);
netif_dbg(ks, tx_queued, ks->netdev,
"%s: skb %p, %d@%p\n", __func__, skb, skb->len, skb->data);
}
spin_unlock(&ks->statelock);
- schedule_work(&ks->tx_work);
+ schedule_work(&kss->tx_work);
return ret;
}
+/**
+ * ks8851_start_xmit - transmit packet
+ * @skb: The buffer to transmit
+ * @dev: The device used to transmit the packet.
+ *
+ * Called by the network layer to transmit the @skb. Queue the packet for
+ * the device and schedule the necessary work to transmit the packet when
+ * it is free.
+ *
+ * We do this to firstly avoid sleeping with the network device locked,
+ * and secondly so we can round up more than one packet to transmit which
+ * means we can try and avoid generating too many transmit done interrupts.
+ */
+static netdev_tx_t ks8851_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct ks8851_net *ks = netdev_priv(dev);
+
+ return ks->start_xmit(skb, dev);
+}
+
/**
* ks8851_rxctrl_work - work handler to change rx mode
* @work: The work structure this belongs to.
static void ks8851_rxctrl_work(struct work_struct *work)
{
struct ks8851_net *ks = container_of(work, struct ks8851_net, rxctrl_work);
+ unsigned long flags;
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
/* need to shutdown RXQ before modifying filter parameters */
ks8851_wrreg16(ks, KS_RXCR1, 0x00);
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
}
static void ks8851_set_rx_mode(struct net_device *dev)
*/
static int ks8851_eeprom_claim(struct ks8851_net *ks)
{
- if (!(ks->rc_ccr & CCR_EEPROM))
- return -ENOENT;
-
- mutex_lock(&ks->lock);
-
/* start with clock low, cs high */
ks8851_wrreg16(ks, KS_EEPCR, EEPCR_EESA | EEPCR_EECS);
return 0;
unsigned val = ks8851_rdreg16(ks, KS_EEPCR);
ks8851_wrreg16(ks, KS_EEPCR, val & ~EEPCR_EESA);
- mutex_unlock(&ks->lock);
}
#define KS_EEPROM_MAGIC (0x00008851)
{
struct ks8851_net *ks = netdev_priv(dev);
int offset = ee->offset;
+ unsigned long flags;
int len = ee->len;
u16 tmp;
if (ee->magic != KS_EEPROM_MAGIC)
return -EINVAL;
- if (ks8851_eeprom_claim(ks))
+ if (!(ks->rc_ccr & CCR_EEPROM))
return -ENOENT;
+ ks8851_lock(ks, &flags);
+
+ ks8851_eeprom_claim(ks);
+
eeprom_93cx6_wren(&ks->eeprom, true);
/* ethtool currently only supports writing bytes, which means
eeprom_93cx6_wren(&ks->eeprom, false);
ks8851_eeprom_release(ks);
+ ks8851_unlock(ks, &flags);
return 0;
}
{
struct ks8851_net *ks = netdev_priv(dev);
int offset = ee->offset;
+ unsigned long flags;
int len = ee->len;
/* must be 2 byte aligned */
if (len & 1 || offset & 1)
return -EINVAL;
- if (ks8851_eeprom_claim(ks))
+ if (!(ks->rc_ccr & CCR_EEPROM))
return -ENOENT;
+ ks8851_lock(ks, &flags);
+
+ ks8851_eeprom_claim(ks);
+
ee->magic = KS_EEPROM_MAGIC;
eeprom_93cx6_multiread(&ks->eeprom, offset/2, (__le16 *)data, len/2);
ks8851_eeprom_release(ks);
+ ks8851_unlock(ks, &flags);
return 0;
}
static int ks8851_phy_read(struct net_device *dev, int phy_addr, int reg)
{
struct ks8851_net *ks = netdev_priv(dev);
+ unsigned long flags;
int ksreg;
int result;
if (!ksreg)
return 0x0; /* no error return allowed, so use zero */
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
result = ks8851_rdreg16(ks, ksreg);
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
return result;
}
int phy, int reg, int value)
{
struct ks8851_net *ks = netdev_priv(dev);
+ unsigned long flags;
int ksreg;
ksreg = ks8851_phy_reg(reg);
if (ksreg) {
- mutex_lock(&ks->lock);
+ ks8851_lock(ks, &flags);
ks8851_wrreg16(ks, ksreg, value);
- mutex_unlock(&ks->lock);
+ ks8851_unlock(ks, &flags);
}
}
static SIMPLE_DEV_PM_OPS(ks8851_pm_ops, ks8851_suspend, ks8851_resume);
-static int ks8851_probe(struct spi_device *spi)
+static int ks8851_probe_common(struct net_device *netdev, struct device *dev,
+ int msg_en)
{
- struct device *dev = &spi->dev;
- struct net_device *netdev;
- struct ks8851_net *ks;
- int ret;
+ struct ks8851_net *ks = netdev_priv(netdev);
unsigned cider;
int gpio;
-
- netdev = alloc_etherdev(sizeof(struct ks8851_net));
- if (!netdev)
- return -ENOMEM;
-
- spi->bits_per_word = 8;
-
- ks = netdev_priv(netdev);
+ int ret;
ks->netdev = netdev;
- ks->spidev = spi;
ks->tx_space = 6144;
gpio = of_get_named_gpio_flags(dev->of_node, "reset-gpios", 0, NULL);
- if (gpio == -EPROBE_DEFER) {
- ret = gpio;
- goto err_gpio;
- }
+ if (gpio == -EPROBE_DEFER)
+ return gpio;
ks->gpio = gpio;
if (gpio_is_valid(gpio)) {
GPIOF_OUT_INIT_LOW, "ks8851_rst_n");
if (ret) {
dev_err(dev, "reset gpio request failed\n");
- goto err_gpio;
+ return ret;
}
}
gpio_set_value(gpio, 1);
}
- mutex_init(&ks->lock);
spin_lock_init(&ks->statelock);
- INIT_WORK(&ks->tx_work, ks8851_tx_work);
INIT_WORK(&ks->rxctrl_work, ks8851_rxctrl_work);
- /* initialise pre-made spi transfer messages */
-
- spi_message_init(&ks->spi_msg1);
- spi_message_add_tail(&ks->spi_xfer1, &ks->spi_msg1);
-
- spi_message_init(&ks->spi_msg2);
- spi_message_add_tail(&ks->spi_xfer2[0], &ks->spi_msg2);
- spi_message_add_tail(&ks->spi_xfer2[1], &ks->spi_msg2);
-
/* setup EEPROM state */
-
ks->eeprom.data = ks;
ks->eeprom.width = PCI_EEPROM_WIDTH_93C46;
ks->eeprom.register_read = ks8851_eeprom_regread;
ks->mii.mdio_read = ks8851_phy_read;
ks->mii.mdio_write = ks8851_phy_write;
- dev_info(dev, "message enable is %d\n", msg_enable);
+ dev_info(dev, "message enable is %d\n", msg_en);
/* set the default message enable */
- ks->msg_enable = netif_msg_init(msg_enable, (NETIF_MSG_DRV |
- NETIF_MSG_PROBE |
- NETIF_MSG_LINK));
+ ks->msg_enable = netif_msg_init(msg_en, NETIF_MSG_DRV |
+ NETIF_MSG_PROBE |
+ NETIF_MSG_LINK);
skb_queue_head_init(&ks->txq);
netdev->ethtool_ops = &ks8851_ethtool_ops;
SET_NETDEV_DEV(netdev, dev);
- spi_set_drvdata(spi, ks);
+ dev_set_drvdata(dev, ks);
netif_carrier_off(ks->netdev);
netdev->if_port = IF_PORT_100BASET;
netdev->netdev_ops = &ks8851_netdev_ops;
- netdev->irq = spi->irq;
/* issue a global soft reset to reset the device. */
ks8851_soft_reset(ks, GRR_GSR);
ks->rc_ccr = ks8851_rdreg16(ks, KS_CCR);
ks8851_read_selftest(ks);
- ks8851_init_mac(ks);
+ ks8851_init_mac(ks, dev->of_node);
ret = register_netdev(netdev);
if (ret) {
err_reg:
regulator_disable(ks->vdd_io);
err_reg_io:
-err_gpio:
- free_netdev(netdev);
return ret;
}
-static int ks8851_remove(struct spi_device *spi)
+static int ks8851_remove_common(struct device *dev)
{
- struct ks8851_net *priv = spi_get_drvdata(spi);
- struct device *dev = &spi->dev;
+ struct ks8851_net *priv = dev_get_drvdata(dev);
if (netif_msg_drv(priv))
dev_info(dev, "remove\n");
gpio_set_value(priv->gpio, 0);
regulator_disable(priv->vdd_reg);
regulator_disable(priv->vdd_io);
- free_netdev(priv->netdev);
return 0;
}
+static int ks8851_probe(struct spi_device *spi)
+{
+ struct device *dev = &spi->dev;
+ struct ks8851_net_spi *kss;
+ struct net_device *netdev;
+ struct ks8851_net *ks;
+
+ netdev = devm_alloc_etherdev(dev, sizeof(struct ks8851_net_spi));
+ if (!netdev)
+ return -ENOMEM;
+
+ spi->bits_per_word = 8;
+
+ ks = netdev_priv(netdev);
+
+ ks->lock = ks8851_lock_spi;
+ ks->unlock = ks8851_unlock_spi;
+ ks->rdreg16 = ks8851_rdreg16_spi;
+ ks->wrreg16 = ks8851_wrreg16_spi;
+ ks->rdfifo = ks8851_rdfifo_spi;
+ ks->wrfifo = ks8851_wrpkt_spi;
+ ks->start_xmit = ks8851_start_xmit_spi;
+ ks->rx_skb = ks8851_rx_skb_spi;
+ ks->flush_tx_work = ks8851_flush_tx_work_spi;
+
+#define STD_IRQ (IRQ_LCI | /* Link Change */ \
+ IRQ_TXI | /* TX done */ \
+ IRQ_RXI | /* RX done */ \
+ IRQ_SPIBEI | /* SPI bus error */ \
+ IRQ_TXPSI | /* TX process stop */ \
+ IRQ_RXPSI) /* RX process stop */
+ ks->rc_ier = STD_IRQ;
+
+ kss = to_ks8851_spi(ks);
+
+ kss->spidev = spi;
+ mutex_init(&kss->lock);
+ INIT_WORK(&kss->tx_work, ks8851_tx_work);
+
+ /* initialise pre-made spi transfer messages */
+ spi_message_init(&kss->spi_msg1);
+ spi_message_add_tail(&kss->spi_xfer1, &kss->spi_msg1);
+
+ spi_message_init(&kss->spi_msg2);
+ spi_message_add_tail(&kss->spi_xfer2[0], &kss->spi_msg2);
+ spi_message_add_tail(&kss->spi_xfer2[1], &kss->spi_msg2);
+
+ netdev->irq = spi->irq;
+
+ return ks8851_probe_common(netdev, dev, msg_enable);
+}
+
+static int ks8851_remove(struct spi_device *spi)
+{
+ return ks8851_remove_common(&spi->dev);
+}
+
static const struct of_device_id ks8851_match_table[] = {
{ .compatible = "micrel,ks8851" },
{ }
projects / linux-2.6-microblaze.git / blobdiff