summaryrefslogtreecommitdiff
path: root/drivers/net/ks8851.c
diff options
context:
space:
mode:
authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-06-11 03:26:31 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-12 00:22:18 -0700
commitbcc9736c6c201b0992c9d0a5b5a30c35138e5782 (patch)
treeb7993c2f5f0b7372a1ce0994476bfb7696901506 /drivers/net/ks8851.c
parentec21e2ec367697b4803e82662bdff6c8567745fc (diff)
ks8*/ksz8*: Move the Micrel drivers
Move the Micrel drivers into drivers/net/ethernet/micrel/ and make the necessary Kconfig and Makefile changes. CC: Ben Dooks <ben@simtec.co.uk> CC: Tristram Ha <Tristram.Ha@micrel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ks8851.c')
-rw-r--r--drivers/net/ks8851.c1737
1 files changed, 0 insertions, 1737 deletions
diff --git a/drivers/net/ks8851.c b/drivers/net/ks8851.c
deleted file mode 100644
index f56743a28fc0..000000000000
--- a/drivers/net/ks8851.c
+++ /dev/null
@@ -1,1737 +0,0 @@
-/* drivers/net/ks8851.c
- *
- * Copyright 2009 Simtec Electronics
- * http://www.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define DEBUG
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/cache.h>
-#include <linux/crc32.h>
-#include <linux/mii.h>
-
-#include <linux/spi/spi.h>
-
-#include "ks8851.h"
-
-/**
- * struct ks8851_rxctrl - KS8851 driver rx control
- * @mchash: Multicast hash-table data.
- * @rxcr1: KS_RXCR1 register setting
- * @rxcr2: KS_RXCR2 register setting
- *
- * Representation of the settings needs to control the receive filtering
- * such as the multicast hash-filter and the receive register settings. This
- * is used to make the job of working out if the receive settings change and
- * then issuing the new settings to the worker that will send the necessary
- * commands.
- */
-struct ks8851_rxctrl {
- u16 mchash[4];
- u16 rxcr1;
- u16 rxcr2;
-};
-
-/**
- * union ks8851_tx_hdr - tx header data
- * @txb: The header as bytes
- * @txw: The header as 16bit, little-endian words
- *
- * A dual representation of the tx header data to allow
- * access to individual bytes, and to allow 16bit accesses
- * with 16bit alignment.
- */
-union ks8851_tx_hdr {
- u8 txb[6];
- __le16 txw[3];
-};
-
-/**
- * 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
- * @irq_work: Work queue for servicing interrupts
- * @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.
- * @msg_enable: The message flags controlling driver output (see ethtool).
- * @fid: Incrementing frame id tag.
- * @rc_ier: Cached copy of KS_IER.
- * @rc_ccr: Cached copy of KS_CCR.
- * @rc_rxqcr: Cached copy of KS_RXQCR.
- * @eeprom_size: Companion eeprom size in Bytes, 0 if no eeprom
- *
- * 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.
- *
- * 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
- * or one of the work queues.
- *
- * We align the buffers we may use for rx/tx to ensure that if the SPI driver
- * wants to DMA map them, it will not have any problems with data the driver
- * modifies.
- */
-struct ks8851_net {
- struct net_device *netdev;
- struct spi_device *spidev;
- struct mutex lock;
- spinlock_t statelock;
-
- union ks8851_tx_hdr txh ____cacheline_aligned;
- u8 rxd[8];
- u8 txd[8];
-
- u32 msg_enable ____cacheline_aligned;
- u16 tx_space;
- u8 fid;
-
- u16 rc_ier;
- u16 rc_rxqcr;
- u16 rc_ccr;
- u16 eeprom_size;
-
- struct mii_if_info mii;
- struct ks8851_rxctrl rxctrl;
-
- struct work_struct tx_work;
- struct work_struct irq_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];
-};
-
-static int msg_enable;
-
-/* shift for byte-enable data */
-#define BYTE_EN(_x) ((_x) << 2)
-
-/* 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)
-
-/* SPI register read/write calls.
- *
- * All these calls issue SPI transactions to access the chip's registers. They
- * all require that the necessary lock is held to prevent accesses when the
- * chip is busy transferring packet data (RX/TX FIFO accesses).
- */
-
-/**
- * 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_wrreg16(struct ks8851_net *ks, unsigned reg, unsigned val)
-{
- struct spi_transfer *xfer = &ks->spi_xfer1;
- struct spi_message *msg = &ks->spi_msg1;
- __le16 txb[2];
- int ret;
-
- txb[0] = cpu_to_le16(MK_OP(reg & 2 ? 0xC : 0x03, reg) | KS_SPIOP_WR);
- txb[1] = cpu_to_le16(val);
-
- xfer->tx_buf = txb;
- xfer->rx_buf = NULL;
- xfer->len = 4;
-
- ret = spi_sync(ks->spidev, msg);
- if (ret < 0)
- netdev_err(ks->netdev, "spi_sync() failed\n");
-}
-
-/**
- * ks8851_wrreg8 - write 8bit 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)
-{
- 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");
-}
-
-/**
- * ks8851_rx_1msg - select whether to use one or two messages for spi read
- * @ks: The device structure
- *
- * Return whether to generate a single message with a tx and rx buffer
- * supplied to spi_sync(), or alternatively send the tx and rx buffers
- * as separate messages.
- *
- * Depending on the hardware in use, a single message may be more efficient
- * on interrupts or work done by the driver.
- *
- * This currently always returns true until we add some per-device data passed
- * from the platform code to specify which mode is better.
- */
-static inline bool ks8851_rx_1msg(struct ks8851_net *ks)
-{
- return true;
-}
-
-/**
- * ks8851_rdreg - issue read register command and return the data
- * @ks: The device state
- * @op: The register address and byte enables in message format.
- * @rxb: The RX buffer to return the result into
- * @rxl: The length of data expected.
- *
- * This is the low level read call that issues the necessary spi message(s)
- * to read data from the register specified in @op.
- */
-static void ks8851_rdreg(struct ks8851_net *ks, unsigned op,
- u8 *rxb, unsigned rxl)
-{
- struct spi_transfer *xfer;
- struct spi_message *msg;
- __le16 *txb = (__le16 *)ks->txd;
- u8 *trx = ks->rxd;
- int ret;
-
- txb[0] = cpu_to_le16(op | KS_SPIOP_RD);
-
- if (ks8851_rx_1msg(ks)) {
- msg = &ks->spi_msg1;
- xfer = &ks->spi_xfer1;
-
- xfer->tx_buf = txb;
- xfer->rx_buf = trx;
- xfer->len = rxl + 2;
- } else {
- msg = &ks->spi_msg2;
- xfer = ks->spi_xfer2;
-
- xfer->tx_buf = txb;
- xfer->rx_buf = NULL;
- xfer->len = 2;
-
- xfer++;
- xfer->tx_buf = NULL;
- xfer->rx_buf = trx;
- xfer->len = rxl;
- }
-
- ret = spi_sync(ks->spidev, msg);
- if (ret < 0)
- netdev_err(ks->netdev, "read: spi_sync() failed\n");
- else if (ks8851_rx_1msg(ks))
- memcpy(rxb, trx + 2, rxl);
- else
- memcpy(rxb, trx, 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
- * @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)
-{
- __le16 rx = 0;
-
- ks8851_rdreg(ks, MK_OP(reg & 2 ? 0xC : 0x3, reg), (u8 *)&rx, 2);
- return le16_to_cpu(rx);
-}
-
-/**
- * ks8851_rdreg32 - read 32 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)
-{
- __le32 rx = 0;
-
- WARN_ON(reg & 3);
-
- ks8851_rdreg(ks, MK_OP(0xf, reg), (u8 *)&rx, 4);
- return le32_to_cpu(rx);
-}
-
-/**
- * ks8851_soft_reset - issue one of the soft reset to the device
- * @ks: The device state.
- * @op: The bit(s) to set in the GRR
- *
- * Issue the relevant soft-reset command to the device's GRR register
- * specified by @op.
- *
- * Note, the delays are in there as a caution to ensure that the reset
- * has time to take effect and then complete. Since the datasheet does
- * not currently specify the exact sequence, we have chosen something
- * that seems to work with our device.
- */
-static void ks8851_soft_reset(struct ks8851_net *ks, unsigned op)
-{
- ks8851_wrreg16(ks, KS_GRR, op);
- mdelay(1); /* wait a short time to effect reset */
- ks8851_wrreg16(ks, KS_GRR, 0);
- mdelay(1); /* wait for condition to clear */
-}
-
-/**
- * ks8851_write_mac_addr - write mac address to device registers
- * @dev: The network device
- *
- * Update the KS8851 MAC address registers from the address in @dev.
- *
- * This call assumes that the chip is not running, so there is no need to
- * shutdown the RXQ process whilst setting this.
-*/
-static int ks8851_write_mac_addr(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- int i;
-
- mutex_lock(&ks->lock);
-
- for (i = 0; i < ETH_ALEN; i++)
- ks8851_wrreg8(ks, KS_MAR(i), dev->dev_addr[i]);
-
- mutex_unlock(&ks->lock);
-
- return 0;
-}
-
-/**
- * ks8851_init_mac - initialise the mac address
- * @ks: The device structure
- *
- * Get or create the initial mac address for the device and then set that
- * into the station address register. Currently we assume that the device
- * does not have a valid mac address in it, and so we use random_ether_addr()
- * to create a new one.
- *
- * In future, the driver should check to see if the device has an EEPROM
- * attached and whether that has a valid ethernet address in it.
- */
-static void ks8851_init_mac(struct ks8851_net *ks)
-{
- struct net_device *dev = ks->netdev;
-
- random_ether_addr(dev->dev_addr);
- ks8851_write_mac_addr(dev);
-}
-
-/**
- * ks8851_irq - device interrupt handler
- * @irq: Interrupt number passed from the IRQ hnalder.
- * @pw: The private word passed to register_irq(), our struct ks8851_net.
- *
- * Disable the interrupt from happening again until we've processed the
- * current status by scheduling ks8851_irq_work().
- */
-static irqreturn_t ks8851_irq(int irq, void *pw)
-{
- struct ks8851_net *ks = pw;
-
- disable_irq_nosync(irq);
- schedule_work(&ks->irq_work);
- return IRQ_HANDLED;
-}
-
-/**
- * ks8851_rdfifo - read data from the receive fifo
- * @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)
-{
- struct spi_transfer *xfer = ks->spi_xfer2;
- struct spi_message *msg = &ks->spi_msg2;
- u8 txb[1];
- int ret;
-
- netif_dbg(ks, rx_status, ks->netdev,
- "%s: %d@%p\n", __func__, len, buff);
-
- /* set the operation we're issuing */
- txb[0] = KS_SPIOP_RXFIFO;
-
- xfer->tx_buf = txb;
- xfer->rx_buf = NULL;
- xfer->len = 1;
-
- xfer++;
- xfer->rx_buf = buff;
- xfer->tx_buf = NULL;
- xfer->len = len;
-
- ret = spi_sync(ks->spidev, msg);
- if (ret < 0)
- netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);
-}
-
-/**
- * ks8851_dbg_dumpkkt - dump initial packet contents to debug
- * @ks: The device state
- * @rxpkt: The data for the received packet
- *
- * Dump the initial data from the packet to dev_dbg().
-*/
-static void ks8851_dbg_dumpkkt(struct ks8851_net *ks, u8 *rxpkt)
-{
- netdev_dbg(ks->netdev,
- "pkt %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x\n",
- rxpkt[4], rxpkt[5], rxpkt[6], rxpkt[7],
- rxpkt[8], rxpkt[9], rxpkt[10], rxpkt[11],
- rxpkt[12], rxpkt[13], rxpkt[14], rxpkt[15]);
-}
-
-/**
- * ks8851_rx_pkts - receive packets from the host
- * @ks: The device information.
- *
- * This is called from the IRQ work queue when the system detects that there
- * are packets in the receive queue. Find out how many packets there are and
- * read them from the FIFO.
- */
-static void ks8851_rx_pkts(struct ks8851_net *ks)
-{
- struct sk_buff *skb;
- unsigned rxfc;
- unsigned rxlen;
- unsigned rxstat;
- u32 rxh;
- u8 *rxpkt;
-
- rxfc = ks8851_rdreg8(ks, KS_RXFC);
-
- netif_dbg(ks, rx_status, ks->netdev,
- "%s: %d packets\n", __func__, rxfc);
-
- /* Currently we're issuing a read per packet, but we could possibly
- * improve the code by issuing a single read, getting the receive
- * header, allocating the packet and then reading the packet data
- * out in one go.
- *
- * This form of operation would require us to hold the SPI bus'
- * chipselect low during the entie transaction to avoid any
- * reset to the data stream coming from the chip.
- */
-
- for (; rxfc != 0; rxfc--) {
- rxh = ks8851_rdreg32(ks, KS_RXFHSR);
- rxstat = rxh & 0xffff;
- rxlen = rxh >> 16;
-
- netif_dbg(ks, rx_status, ks->netdev,
- "rx: stat 0x%04x, len 0x%04x\n", rxstat, rxlen);
-
- /* the length of the packet includes the 32bit CRC */
-
- /* set dma read address */
- ks8851_wrreg16(ks, KS_RXFDPR, RXFDPR_RXFPAI | 0x00);
-
- /* start the packet dma process, and set auto-dequeue rx */
- ks8851_wrreg16(ks, KS_RXQCR,
- ks->rc_rxqcr | RXQCR_SDA | RXQCR_ADRFE);
-
- if (rxlen > 4) {
- unsigned int rxalign;
-
- rxlen -= 4;
- rxalign = ALIGN(rxlen, 4);
- skb = netdev_alloc_skb_ip_align(ks->netdev, rxalign);
- if (skb) {
-
- /* 4 bytes of status header + 4 bytes of
- * garbage: we put them before ethernet
- * header, so that they are copied,
- * but ignored.
- */
-
- rxpkt = skb_put(skb, rxlen) - 8;
-
- ks8851_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(skb);
-
- ks->netdev->stats.rx_packets++;
- ks->netdev->stats.rx_bytes += rxlen;
- }
- }
-
- ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
- }
-}
-
-/**
- * ks8851_irq_work - work queue handler for dealing with interrupt requests
- * @work: The work structure that was scheduled by schedule_work()
- *
- * This is the handler invoked when the ks8851_irq() is called to find out
- * what happened, as we cannot allow ourselves to sleep whilst waiting for
- * anything other process has the chip's lock.
- *
- * Read the interrupt status, work out what needs to be done and then clear
- * any of the interrupts that are not needed.
- */
-static void ks8851_irq_work(struct work_struct *work)
-{
- struct ks8851_net *ks = container_of(work, struct ks8851_net, irq_work);
- unsigned status;
- unsigned handled = 0;
-
- mutex_lock(&ks->lock);
-
- status = ks8851_rdreg16(ks, KS_ISR);
-
- netif_dbg(ks, intr, ks->netdev,
- "%s: status 0x%04x\n", __func__, status);
-
- if (status & IRQ_LCI) {
- /* should do something about checking link status */
- handled |= IRQ_LCI;
- }
-
- if (status & IRQ_LDI) {
- u16 pmecr = ks8851_rdreg16(ks, KS_PMECR);
- pmecr &= ~PMECR_WKEVT_MASK;
- ks8851_wrreg16(ks, KS_PMECR, pmecr | PMECR_WKEVT_LINK);
-
- handled |= IRQ_LDI;
- }
-
- if (status & IRQ_RXPSI)
- handled |= IRQ_RXPSI;
-
- if (status & IRQ_TXI) {
- handled |= IRQ_TXI;
-
- /* no lock here, tx queue should have been stopped */
-
- /* update our idea of how much tx space is available to the
- * system */
- ks->tx_space = ks8851_rdreg16(ks, KS_TXMIR);
-
- netif_dbg(ks, intr, ks->netdev,
- "%s: txspace %d\n", __func__, ks->tx_space);
- }
-
- if (status & IRQ_RXI)
- handled |= IRQ_RXI;
-
- if (status & IRQ_SPIBEI) {
- dev_err(&ks->spidev->dev, "%s: spi bus error\n", __func__);
- handled |= IRQ_SPIBEI;
- }
-
- ks8851_wrreg16(ks, KS_ISR, handled);
-
- if (status & IRQ_RXI) {
- /* the datasheet says to disable the rx interrupt during
- * packet read-out, however we're masking the interrupt
- * from the device so do not bother masking just the RX
- * from the device. */
-
- ks8851_rx_pkts(ks);
- }
-
- /* if something stopped the rx process, probably due to wanting
- * to change the rx settings, then do something about restarting
- * it. */
- if (status & IRQ_RXPSI) {
- struct ks8851_rxctrl *rxc = &ks->rxctrl;
-
- /* update the multicast hash table */
- ks8851_wrreg16(ks, KS_MAHTR0, rxc->mchash[0]);
- ks8851_wrreg16(ks, KS_MAHTR1, rxc->mchash[1]);
- ks8851_wrreg16(ks, KS_MAHTR2, rxc->mchash[2]);
- ks8851_wrreg16(ks, KS_MAHTR3, rxc->mchash[3]);
-
- ks8851_wrreg16(ks, KS_RXCR2, rxc->rxcr2);
- ks8851_wrreg16(ks, KS_RXCR1, rxc->rxcr1);
- }
-
- mutex_unlock(&ks->lock);
-
- if (status & IRQ_TXI)
- netif_wake_queue(ks->netdev);
-
- enable_irq(ks->netdev->irq);
-}
-
-/**
- * calc_txlen - calculate size of message to send packet
- * @len: Length of data
- *
- * Returns the size of the TXFIFO message needed to send
- * this packet.
- */
-static inline unsigned calc_txlen(unsigned len)
-{
- return ALIGN(len + 4, 4);
-}
-
-/**
- * ks8851_wrpkt - write packet to TX FIFO
- * @ks: The device state.
- * @txp: The sk_buff to transmit.
- * @irq: IRQ on completion of the packet.
- *
- * Send the @txp to the chip. This means creating the relevant packet header
- * specifying the length of the packet and the other information the chip
- * 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)
-{
- struct spi_transfer *xfer = ks->spi_xfer2;
- struct spi_message *msg = &ks->spi_msg2;
- unsigned fid = 0;
- int ret;
-
- netif_dbg(ks, tx_queued, ks->netdev, "%s: skb %p, %d@%p, irq %d\n",
- __func__, txp, txp->len, txp->data, irq);
-
- fid = ks->fid++;
- fid &= TXFR_TXFID_MASK;
-
- if (irq)
- fid |= TXFR_TXIC; /* irq on completion */
-
- /* start header at txb[1] to align txw entries */
- ks->txh.txb[1] = KS_SPIOP_TXFIFO;
- ks->txh.txw[1] = cpu_to_le16(fid);
- ks->txh.txw[2] = cpu_to_le16(txp->len);
-
- xfer->tx_buf = &ks->txh.txb[1];
- xfer->rx_buf = NULL;
- xfer->len = 5;
-
- xfer++;
- xfer->tx_buf = txp->data;
- xfer->rx_buf = NULL;
- xfer->len = ALIGN(txp->len, 4);
-
- ret = spi_sync(ks->spidev, msg);
- if (ret < 0)
- netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);
-}
-
-/**
- * ks8851_done_tx - update and then free skbuff after transmitting
- * @ks: The device state
- * @txb: The buffer transmitted
- */
-static void ks8851_done_tx(struct ks8851_net *ks, struct sk_buff *txb)
-{
- struct net_device *dev = ks->netdev;
-
- dev->stats.tx_bytes += txb->len;
- dev->stats.tx_packets++;
-
- dev_kfree_skb(txb);
-}
-
-/**
- * ks8851_tx_work - process tx packet(s)
- * @work: The work strucutre what was scheduled.
- *
- * This is called when a number of packets have been scheduled for
- * transmission and need to be sent to the device.
- */
-static void ks8851_tx_work(struct work_struct *work)
-{
- struct ks8851_net *ks = container_of(work, struct ks8851_net, tx_work);
- struct sk_buff *txb;
- bool last = skb_queue_empty(&ks->txq);
-
- mutex_lock(&ks->lock);
-
- while (!last) {
- txb = skb_dequeue(&ks->txq);
- last = skb_queue_empty(&ks->txq);
-
- if (txb != NULL) {
- ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
- ks8851_wrpkt(ks, txb, last);
- ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
- ks8851_wrreg16(ks, KS_TXQCR, TXQCR_METFE);
-
- ks8851_done_tx(ks, txb);
- }
- }
-
- mutex_unlock(&ks->lock);
-}
-
-/**
- * ks8851_set_powermode - set power mode of the device
- * @ks: The device state
- * @pwrmode: The power mode value to write to KS_PMECR.
- *
- * Change the power mode of the chip.
- */
-static void ks8851_set_powermode(struct ks8851_net *ks, unsigned pwrmode)
-{
- unsigned pmecr;
-
- netif_dbg(ks, hw, ks->netdev, "setting power mode %d\n", pwrmode);
-
- pmecr = ks8851_rdreg16(ks, KS_PMECR);
- pmecr &= ~PMECR_PM_MASK;
- pmecr |= pwrmode;
-
- ks8851_wrreg16(ks, KS_PMECR, pmecr);
-}
-
-/**
- * ks8851_net_open - open network device
- * @dev: The network device being opened.
- *
- * Called when the network device is marked active, such as a user executing
- * 'ifconfig up' on the device.
- */
-static int ks8851_net_open(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
-
- /* lock the card, even if we may not actually be doing anything
- * else at the moment */
- mutex_lock(&ks->lock);
-
- netif_dbg(ks, ifup, ks->netdev, "opening\n");
-
- /* bring chip out of any power saving mode it was in */
- ks8851_set_powermode(ks, PMECR_PM_NORMAL);
-
- /* issue a soft reset to the RX/TX QMU to put it into a known
- * state. */
- ks8851_soft_reset(ks, GRR_QMU);
-
- /* setup transmission parameters */
-
- ks8851_wrreg16(ks, KS_TXCR, (TXCR_TXE | /* enable transmit process */
- TXCR_TXPE | /* pad to min length */
- TXCR_TXCRC | /* add CRC */
- TXCR_TXFCE)); /* enable flow control */
-
- /* auto-increment tx data, reset tx pointer */
- ks8851_wrreg16(ks, KS_TXFDPR, TXFDPR_TXFPAI);
-
- /* setup receiver control */
-
- ks8851_wrreg16(ks, KS_RXCR1, (RXCR1_RXPAFMA | /* from mac filter */
- RXCR1_RXFCE | /* enable flow control */
- RXCR1_RXBE | /* broadcast enable */
- RXCR1_RXUE | /* unicast enable */
- RXCR1_RXE)); /* enable rx block */
-
- /* transfer entire frames out in one go */
- ks8851_wrreg16(ks, KS_RXCR2, RXCR2_SRDBL_FRAME);
-
- /* set receive counter timeouts */
- ks8851_wrreg16(ks, KS_RXDTTR, 1000); /* 1ms after first frame to IRQ */
- ks8851_wrreg16(ks, KS_RXDBCTR, 4096); /* >4Kbytes in buffer to IRQ */
- ks8851_wrreg16(ks, KS_RXFCTR, 10); /* 10 frames to IRQ */
-
- ks->rc_rxqcr = (RXQCR_RXFCTE | /* IRQ on frame count exceeded */
- RXQCR_RXDBCTE | /* IRQ on byte count exceeded */
- RXQCR_RXDTTE); /* IRQ on time exceeded */
-
- 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);
-
- netif_start_queue(ks->netdev);
-
- netif_dbg(ks, ifup, ks->netdev, "network device up\n");
-
- mutex_unlock(&ks->lock);
- return 0;
-}
-
-/**
- * ks8851_net_stop - close network device
- * @dev: The device being closed.
- *
- * Called to close down a network device which has been active. Cancell any
- * work, shutdown the RX and TX process and then place the chip into a low
- * power state whilst it is not being used.
- */
-static int ks8851_net_stop(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
-
- netif_info(ks, ifdown, dev, "shutting down\n");
-
- netif_stop_queue(dev);
-
- mutex_lock(&ks->lock);
-
- /* stop any outstanding work */
- flush_work(&ks->irq_work);
- flush_work(&ks->tx_work);
- flush_work(&ks->rxctrl_work);
-
- /* turn off the IRQs and ack any outstanding */
- ks8851_wrreg16(ks, KS_IER, 0x0000);
- ks8851_wrreg16(ks, KS_ISR, 0xffff);
-
- /* shutdown RX process */
- ks8851_wrreg16(ks, KS_RXCR1, 0x0000);
-
- /* shutdown TX process */
- ks8851_wrreg16(ks, KS_TXCR, 0x0000);
-
- /* set powermode to soft power down to save power */
- ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN);
-
- /* ensure any queued tx buffers are dumped */
- while (!skb_queue_empty(&ks->txq)) {
- struct sk_buff *txb = skb_dequeue(&ks->txq);
-
- netif_dbg(ks, ifdown, ks->netdev,
- "%s: freeing txb %p\n", __func__, txb);
-
- dev_kfree_skb(txb);
- }
-
- mutex_unlock(&ks->lock);
- return 0;
-}
-
-/**
- * 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);
- unsigned needed = calc_txlen(skb->len);
- netdev_tx_t ret = NETDEV_TX_OK;
-
- netif_dbg(ks, tx_queued, ks->netdev,
- "%s: skb %p, %d@%p\n", __func__, skb, skb->len, skb->data);
-
- spin_lock(&ks->statelock);
-
- if (needed > ks->tx_space) {
- netif_stop_queue(dev);
- ret = NETDEV_TX_BUSY;
- } else {
- ks->tx_space -= needed;
- skb_queue_tail(&ks->txq, skb);
- }
-
- spin_unlock(&ks->statelock);
- schedule_work(&ks->tx_work);
-
- return ret;
-}
-
-/**
- * ks8851_rxctrl_work - work handler to change rx mode
- * @work: The work structure this belongs to.
- *
- * Lock the device and issue the necessary changes to the receive mode from
- * the network device layer. This is done so that we can do this without
- * having to sleep whilst holding the network device lock.
- *
- * Since the recommendation from Micrel is that the RXQ is shutdown whilst the
- * receive parameters are programmed, we issue a write to disable the RXQ and
- * then wait for the interrupt handler to be triggered once the RXQ shutdown is
- * complete. The interrupt handler then writes the new values into the chip.
- */
-static void ks8851_rxctrl_work(struct work_struct *work)
-{
- struct ks8851_net *ks = container_of(work, struct ks8851_net, rxctrl_work);
-
- mutex_lock(&ks->lock);
-
- /* need to shutdown RXQ before modifying filter parameters */
- ks8851_wrreg16(ks, KS_RXCR1, 0x00);
-
- mutex_unlock(&ks->lock);
-}
-
-static void ks8851_set_rx_mode(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- struct ks8851_rxctrl rxctrl;
-
- memset(&rxctrl, 0, sizeof(rxctrl));
-
- if (dev->flags & IFF_PROMISC) {
- /* interface to receive everything */
-
- rxctrl.rxcr1 = RXCR1_RXAE | RXCR1_RXINVF;
- } else if (dev->flags & IFF_ALLMULTI) {
- /* accept all multicast packets */
-
- rxctrl.rxcr1 = (RXCR1_RXME | RXCR1_RXAE |
- RXCR1_RXPAFMA | RXCR1_RXMAFMA);
- } else if (dev->flags & IFF_MULTICAST && !netdev_mc_empty(dev)) {
- struct netdev_hw_addr *ha;
- u32 crc;
-
- /* accept some multicast */
-
- netdev_for_each_mc_addr(ha, dev) {
- crc = ether_crc(ETH_ALEN, ha->addr);
- crc >>= (32 - 6); /* get top six bits */
-
- rxctrl.mchash[crc >> 4] |= (1 << (crc & 0xf));
- }
-
- rxctrl.rxcr1 = RXCR1_RXME | RXCR1_RXPAFMA;
- } else {
- /* just accept broadcast / unicast */
- rxctrl.rxcr1 = RXCR1_RXPAFMA;
- }
-
- rxctrl.rxcr1 |= (RXCR1_RXUE | /* unicast enable */
- RXCR1_RXBE | /* broadcast enable */
- RXCR1_RXE | /* RX process enable */
- RXCR1_RXFCE); /* enable flow control */
-
- rxctrl.rxcr2 |= RXCR2_SRDBL_FRAME;
-
- /* schedule work to do the actual set of the data if needed */
-
- spin_lock(&ks->statelock);
-
- if (memcmp(&rxctrl, &ks->rxctrl, sizeof(rxctrl)) != 0) {
- memcpy(&ks->rxctrl, &rxctrl, sizeof(ks->rxctrl));
- schedule_work(&ks->rxctrl_work);
- }
-
- spin_unlock(&ks->statelock);
-}
-
-static int ks8851_set_mac_address(struct net_device *dev, void *addr)
-{
- struct sockaddr *sa = addr;
-
- if (netif_running(dev))
- return -EBUSY;
-
- if (!is_valid_ether_addr(sa->sa_data))
- return -EADDRNOTAVAIL;
-
- memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
- return ks8851_write_mac_addr(dev);
-}
-
-static int ks8851_net_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
-{
- struct ks8851_net *ks = netdev_priv(dev);
-
- if (!netif_running(dev))
- return -EINVAL;
-
- return generic_mii_ioctl(&ks->mii, if_mii(req), cmd, NULL);
-}
-
-static const struct net_device_ops ks8851_netdev_ops = {
- .ndo_open = ks8851_net_open,
- .ndo_stop = ks8851_net_stop,
- .ndo_do_ioctl = ks8851_net_ioctl,
- .ndo_start_xmit = ks8851_start_xmit,
- .ndo_set_mac_address = ks8851_set_mac_address,
- .ndo_set_rx_mode = ks8851_set_rx_mode,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-/* Companion eeprom access */
-
-enum { /* EEPROM programming states */
- EEPROM_CONTROL,
- EEPROM_ADDRESS,
- EEPROM_DATA,
- EEPROM_COMPLETE
-};
-
-/**
- * ks8851_eeprom_read - read a 16bits word in ks8851 companion EEPROM
- * @dev: The network device the PHY is on.
- * @addr: EEPROM address to read
- *
- * eeprom_size: used to define the data coding length. Can be changed
- * through debug-fs.
- *
- * Programs a read on the EEPROM using ks8851 EEPROM SW access feature.
- * Warning: The READ feature is not supported on ks8851 revision 0.
- *
- * Rough programming model:
- * - on period start: set clock high and read value on bus
- * - on period / 2: set clock low and program value on bus
- * - start on period / 2
- */
-unsigned int ks8851_eeprom_read(struct net_device *dev, unsigned int addr)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- int eepcr;
- int ctrl = EEPROM_OP_READ;
- int state = EEPROM_CONTROL;
- int bit_count = EEPROM_OP_LEN - 1;
- unsigned int data = 0;
- int dummy;
- unsigned int addr_len;
-
- addr_len = (ks->eeprom_size == 128) ? 6 : 8;
-
- /* start transaction: chip select high, authorize write */
- mutex_lock(&ks->lock);
- eepcr = EEPCR_EESA | EEPCR_EESRWA;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- eepcr |= EEPCR_EECS;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
- while (state != EEPROM_COMPLETE) {
- /* falling clock period starts... */
- /* set EED_IO pin for control and address */
- eepcr &= ~EEPCR_EEDO;
- switch (state) {
- case EEPROM_CONTROL:
- eepcr |= ((ctrl >> bit_count) & 1) << 2;
- if (bit_count-- <= 0) {
- bit_count = addr_len - 1;
- state = EEPROM_ADDRESS;
- }
- break;
- case EEPROM_ADDRESS:
- eepcr |= ((addr >> bit_count) & 1) << 2;
- bit_count--;
- break;
- case EEPROM_DATA:
- /* Change to receive mode */
- eepcr &= ~EEPCR_EESRWA;
- break;
- }
-
- /* lower clock */
- eepcr &= ~EEPCR_EESCK;
-
- mutex_lock(&ks->lock);
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
- /* waitread period / 2 */
- udelay(EEPROM_SK_PERIOD / 2);
-
- /* rising clock period starts... */
-
- /* raise clock */
- mutex_lock(&ks->lock);
- eepcr |= EEPCR_EESCK;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
- /* Manage read */
- switch (state) {
- case EEPROM_ADDRESS:
- if (bit_count < 0) {
- bit_count = EEPROM_DATA_LEN - 1;
- state = EEPROM_DATA;
- }
- break;
- case EEPROM_DATA:
- mutex_lock(&ks->lock);
- dummy = ks8851_rdreg16(ks, KS_EEPCR);
- mutex_unlock(&ks->lock);
- data |= ((dummy >> EEPCR_EESB_OFFSET) & 1) << bit_count;
- if (bit_count-- <= 0)
- state = EEPROM_COMPLETE;
- break;
- }
-
- /* wait period / 2 */
- udelay(EEPROM_SK_PERIOD / 2);
- }
-
- /* close transaction */
- mutex_lock(&ks->lock);
- eepcr &= ~EEPCR_EECS;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- eepcr = 0;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
- return data;
-}
-
-/**
- * ks8851_eeprom_write - write a 16bits word in ks8851 companion EEPROM
- * @dev: The network device the PHY is on.
- * @op: operand (can be WRITE, EWEN, EWDS)
- * @addr: EEPROM address to write
- * @data: data to write
- *
- * eeprom_size: used to define the data coding length. Can be changed
- * through debug-fs.
- *
- * Programs a write on the EEPROM using ks8851 EEPROM SW access feature.
- *
- * Note that a write enable is required before writing data.
- *
- * Rough programming model:
- * - on period start: set clock high
- * - on period / 2: set clock low and program value on bus
- * - start on period / 2
- */
-void ks8851_eeprom_write(struct net_device *dev, unsigned int op,
- unsigned int addr, unsigned int data)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- int eepcr;
- int state = EEPROM_CONTROL;
- int bit_count = EEPROM_OP_LEN - 1;
- unsigned int addr_len;
-
- addr_len = (ks->eeprom_size == 128) ? 6 : 8;
-
- switch (op) {
- case EEPROM_OP_EWEN:
- addr = 0x30;
- break;
- case EEPROM_OP_EWDS:
- addr = 0;
- break;
- }
-
- /* start transaction: chip select high, authorize write */
- mutex_lock(&ks->lock);
- eepcr = EEPCR_EESA | EEPCR_EESRWA;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- eepcr |= EEPCR_EECS;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
- while (state != EEPROM_COMPLETE) {
- /* falling clock period starts... */
- /* set EED_IO pin for control and address */
- eepcr &= ~EEPCR_EEDO;
- switch (state) {
- case EEPROM_CONTROL:
- eepcr |= ((op >> bit_count) & 1) << 2;
- if (bit_count-- <= 0) {
- bit_count = addr_len - 1;
- state = EEPROM_ADDRESS;
- }
- break;
- case EEPROM_ADDRESS:
- eepcr |= ((addr >> bit_count) & 1) << 2;
- if (bit_count-- <= 0) {
- if (op == EEPROM_OP_WRITE) {
- bit_count = EEPROM_DATA_LEN - 1;
- state = EEPROM_DATA;
- } else {
- state = EEPROM_COMPLETE;
- }
- }
- break;
- case EEPROM_DATA:
- eepcr |= ((data >> bit_count) & 1) << 2;
- if (bit_count-- <= 0)
- state = EEPROM_COMPLETE;
- break;
- }
-
- /* lower clock */
- eepcr &= ~EEPCR_EESCK;
-
- mutex_lock(&ks->lock);
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
- /* wait period / 2 */
- udelay(EEPROM_SK_PERIOD / 2);
-
- /* rising clock period starts... */
-
- /* raise clock */
- eepcr |= EEPCR_EESCK;
- mutex_lock(&ks->lock);
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
- /* wait period / 2 */
- udelay(EEPROM_SK_PERIOD / 2);
- }
-
- /* close transaction */
- mutex_lock(&ks->lock);
- eepcr &= ~EEPCR_EECS;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- eepcr = 0;
- ks8851_wrreg16(ks, KS_EEPCR, eepcr);
- mutex_unlock(&ks->lock);
-
-}
-
-/* ethtool support */
-
-static void ks8851_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *di)
-{
- strlcpy(di->driver, "KS8851", sizeof(di->driver));
- strlcpy(di->version, "1.00", sizeof(di->version));
- strlcpy(di->bus_info, dev_name(dev->dev.parent), sizeof(di->bus_info));
-}
-
-static u32 ks8851_get_msglevel(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- return ks->msg_enable;
-}
-
-static void ks8851_set_msglevel(struct net_device *dev, u32 to)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- ks->msg_enable = to;
-}
-
-static int ks8851_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- return mii_ethtool_gset(&ks->mii, cmd);
-}
-
-static int ks8851_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- return mii_ethtool_sset(&ks->mii, cmd);
-}
-
-static u32 ks8851_get_link(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- return mii_link_ok(&ks->mii);
-}
-
-static int ks8851_nway_reset(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- return mii_nway_restart(&ks->mii);
-}
-
-static int ks8851_get_eeprom_len(struct net_device *dev)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- return ks->eeprom_size;
-}
-
-static int ks8851_get_eeprom(struct net_device *dev,
- struct ethtool_eeprom *eeprom, u8 *bytes)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- u16 *eeprom_buff;
- int first_word;
- int last_word;
- int ret_val = 0;
- u16 i;
-
- if (eeprom->len == 0)
- return -EINVAL;
-
- if (eeprom->len > ks->eeprom_size)
- return -EINVAL;
-
- eeprom->magic = ks8851_rdreg16(ks, KS_CIDER);
-
- first_word = eeprom->offset >> 1;
- last_word = (eeprom->offset + eeprom->len - 1) >> 1;
-
- eeprom_buff = kmalloc(sizeof(u16) *
- (last_word - first_word + 1), GFP_KERNEL);
- if (!eeprom_buff)
- return -ENOMEM;
-
- for (i = 0; i < last_word - first_word + 1; i++)
- eeprom_buff[i] = ks8851_eeprom_read(dev, first_word + 1);
-
- /* Device's eeprom is little-endian, word addressable */
- for (i = 0; i < last_word - first_word + 1; i++)
- le16_to_cpus(&eeprom_buff[i]);
-
- memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
- kfree(eeprom_buff);
-
- return ret_val;
-}
-
-static int ks8851_set_eeprom(struct net_device *dev,
- struct ethtool_eeprom *eeprom, u8 *bytes)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- u16 *eeprom_buff;
- void *ptr;
- int max_len;
- int first_word;
- int last_word;
- int ret_val = 0;
- u16 i;
-
- if (eeprom->len == 0)
- return -EOPNOTSUPP;
-
- if (eeprom->len > ks->eeprom_size)
- return -EINVAL;
-
- if (eeprom->magic != ks8851_rdreg16(ks, KS_CIDER))
- return -EFAULT;
-
- first_word = eeprom->offset >> 1;
- last_word = (eeprom->offset + eeprom->len - 1) >> 1;
- max_len = (last_word - first_word + 1) * 2;
- eeprom_buff = kmalloc(max_len, GFP_KERNEL);
- if (!eeprom_buff)
- return -ENOMEM;
-
- ptr = (void *)eeprom_buff;
-
- if (eeprom->offset & 1) {
- /* need read/modify/write of first changed EEPROM word */
- /* only the second byte of the word is being modified */
- eeprom_buff[0] = ks8851_eeprom_read(dev, first_word);
- ptr++;
- }
- if ((eeprom->offset + eeprom->len) & 1)
- /* need read/modify/write of last changed EEPROM word */
- /* only the first byte of the word is being modified */
- eeprom_buff[last_word - first_word] =
- ks8851_eeprom_read(dev, last_word);
-
-
- /* Device's eeprom is little-endian, word addressable */
- le16_to_cpus(&eeprom_buff[0]);
- le16_to_cpus(&eeprom_buff[last_word - first_word]);
-
- memcpy(ptr, bytes, eeprom->len);
-
- for (i = 0; i < last_word - first_word + 1; i++)
- eeprom_buff[i] = cpu_to_le16(eeprom_buff[i]);
-
- ks8851_eeprom_write(dev, EEPROM_OP_EWEN, 0, 0);
-
- for (i = 0; i < last_word - first_word + 1; i++) {
- ks8851_eeprom_write(dev, EEPROM_OP_WRITE, first_word + i,
- eeprom_buff[i]);
- mdelay(EEPROM_WRITE_TIME);
- }
-
- ks8851_eeprom_write(dev, EEPROM_OP_EWDS, 0, 0);
-
- kfree(eeprom_buff);
- return ret_val;
-}
-
-static const struct ethtool_ops ks8851_ethtool_ops = {
- .get_drvinfo = ks8851_get_drvinfo,
- .get_msglevel = ks8851_get_msglevel,
- .set_msglevel = ks8851_set_msglevel,
- .get_settings = ks8851_get_settings,
- .set_settings = ks8851_set_settings,
- .get_link = ks8851_get_link,
- .nway_reset = ks8851_nway_reset,
- .get_eeprom_len = ks8851_get_eeprom_len,
- .get_eeprom = ks8851_get_eeprom,
- .set_eeprom = ks8851_set_eeprom,
-};
-
-/* MII interface controls */
-
-/**
- * ks8851_phy_reg - convert MII register into a KS8851 register
- * @reg: MII register number.
- *
- * Return the KS8851 register number for the corresponding MII PHY register
- * if possible. Return zero if the MII register has no direct mapping to the
- * KS8851 register set.
- */
-static int ks8851_phy_reg(int reg)
-{
- switch (reg) {
- case MII_BMCR:
- return KS_P1MBCR;
- case MII_BMSR:
- return KS_P1MBSR;
- case MII_PHYSID1:
- return KS_PHY1ILR;
- case MII_PHYSID2:
- return KS_PHY1IHR;
- case MII_ADVERTISE:
- return KS_P1ANAR;
- case MII_LPA:
- return KS_P1ANLPR;
- }
-
- return 0x0;
-}
-
-/**
- * ks8851_phy_read - MII interface PHY register read.
- * @dev: The network device the PHY is on.
- * @phy_addr: Address of PHY (ignored as we only have one)
- * @reg: The register to read.
- *
- * This call reads data from the PHY register specified in @reg. Since the
- * device does not support all the MII registers, the non-existent values
- * are always returned as zero.
- *
- * We return zero for unsupported registers as the MII code does not check
- * the value returned for any error status, and simply returns it to the
- * caller. The mii-tool that the driver was tested with takes any -ve error
- * as real PHY capabilities, thus displaying incorrect data to the user.
- */
-static int ks8851_phy_read(struct net_device *dev, int phy_addr, int reg)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- int ksreg;
- int result;
-
- ksreg = ks8851_phy_reg(reg);
- if (!ksreg)
- return 0x0; /* no error return allowed, so use zero */
-
- mutex_lock(&ks->lock);
- result = ks8851_rdreg16(ks, ksreg);
- mutex_unlock(&ks->lock);
-
- return result;
-}
-
-static void ks8851_phy_write(struct net_device *dev,
- int phy, int reg, int value)
-{
- struct ks8851_net *ks = netdev_priv(dev);
- int ksreg;
-
- ksreg = ks8851_phy_reg(reg);
- if (ksreg) {
- mutex_lock(&ks->lock);
- ks8851_wrreg16(ks, ksreg, value);
- mutex_unlock(&ks->lock);
- }
-}
-
-/**
- * ks8851_read_selftest - read the selftest memory info.
- * @ks: The device state
- *
- * Read and check the TX/RX memory selftest information.
- */
-static int ks8851_read_selftest(struct ks8851_net *ks)
-{
- unsigned both_done = MBIR_TXMBF | MBIR_RXMBF;
- int ret = 0;
- unsigned rd;
-
- rd = ks8851_rdreg16(ks, KS_MBIR);
-
- if ((rd & both_done) != both_done) {
- netdev_warn(ks->netdev, "Memory selftest not finished\n");
- return 0;
- }
-
- if (rd & MBIR_TXMBFA) {
- netdev_err(ks->netdev, "TX memory selftest fail\n");
- ret |= 1;
- }
-
- if (rd & MBIR_RXMBFA) {
- netdev_err(ks->netdev, "RX memory selftest fail\n");
- ret |= 2;
- }
-
- return 0;
-}
-
-/* driver bus management functions */
-
-#ifdef CONFIG_PM
-static int ks8851_suspend(struct spi_device *spi, pm_message_t state)
-{
- struct ks8851_net *ks = dev_get_drvdata(&spi->dev);
- struct net_device *dev = ks->netdev;
-
- if (netif_running(dev)) {
- netif_device_detach(dev);
- ks8851_net_stop(dev);
- }
-
- return 0;
-}
-
-static int ks8851_resume(struct spi_device *spi)
-{
- struct ks8851_net *ks = dev_get_drvdata(&spi->dev);
- struct net_device *dev = ks->netdev;
-
- if (netif_running(dev)) {
- ks8851_net_open(dev);
- netif_device_attach(dev);
- }
-
- return 0;
-}
-#else
-#define ks8851_suspend NULL
-#define ks8851_resume NULL
-#endif
-
-static int __devinit ks8851_probe(struct spi_device *spi)
-{
- struct net_device *ndev;
- struct ks8851_net *ks;
- int ret;
-
- ndev = alloc_etherdev(sizeof(struct ks8851_net));
- if (!ndev) {
- dev_err(&spi->dev, "failed to alloc ethernet device\n");
- return -ENOMEM;
- }
-
- spi->bits_per_word = 8;
-
- ks = netdev_priv(ndev);
-
- ks->netdev = ndev;
- ks->spidev = spi;
- ks->tx_space = 6144;
-
- mutex_init(&ks->lock);
- spin_lock_init(&ks->statelock);
-
- INIT_WORK(&ks->tx_work, ks8851_tx_work);
- INIT_WORK(&ks->irq_work, ks8851_irq_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 mii state */
- ks->mii.dev = ndev;
- ks->mii.phy_id = 1,
- ks->mii.phy_id_mask = 1;
- ks->mii.reg_num_mask = 0xf;
- ks->mii.mdio_read = ks8851_phy_read;
- ks->mii.mdio_write = ks8851_phy_write;
-
- dev_info(&spi->dev, "message enable is %d\n", msg_enable);
-
- /* set the default message enable */
- ks->msg_enable = netif_msg_init(msg_enable, (NETIF_MSG_DRV |
- NETIF_MSG_PROBE |
- NETIF_MSG_LINK));
-
- skb_queue_head_init(&ks->txq);
-
- SET_ETHTOOL_OPS(ndev, &ks8851_ethtool_ops);
- SET_NETDEV_DEV(ndev, &spi->dev);
-
- dev_set_drvdata(&spi->dev, ks);
-
- ndev->if_port = IF_PORT_100BASET;
- ndev->netdev_ops = &ks8851_netdev_ops;
- ndev->irq = spi->irq;
-
- /* issue a global soft reset to reset the device. */
- ks8851_soft_reset(ks, GRR_GSR);
-
- /* simple check for a valid chip being connected to the bus */
-
- if ((ks8851_rdreg16(ks, KS_CIDER) & ~CIDER_REV_MASK) != CIDER_ID) {
- dev_err(&spi->dev, "failed to read device ID\n");
- ret = -ENODEV;
- goto err_id;
- }
-
- /* cache the contents of the CCR register for EEPROM, etc. */
- ks->rc_ccr = ks8851_rdreg16(ks, KS_CCR);
-
- if (ks->rc_ccr & CCR_EEPROM)
- ks->eeprom_size = 128;
- else
- ks->eeprom_size = 0;
-
- ks8851_read_selftest(ks);
- ks8851_init_mac(ks);
-
- ret = request_irq(spi->irq, ks8851_irq, IRQF_TRIGGER_LOW,
- ndev->name, ks);
- if (ret < 0) {
- dev_err(&spi->dev, "failed to get irq\n");
- goto err_irq;
- }
-
- ret = register_netdev(ndev);
- if (ret) {
- dev_err(&spi->dev, "failed to register network device\n");
- goto err_netdev;
- }
-
- netdev_info(ndev, "revision %d, MAC %pM, IRQ %d\n",
- CIDER_REV_GET(ks8851_rdreg16(ks, KS_CIDER)),
- ndev->dev_addr, ndev->irq);
-
- return 0;
-
-
-err_netdev:
- free_irq(ndev->irq, ndev);
-
-err_id:
-err_irq:
- free_netdev(ndev);
- return ret;
-}
-
-static int __devexit ks8851_remove(struct spi_device *spi)
-{
- struct ks8851_net *priv = dev_get_drvdata(&spi->dev);
-
- if (netif_msg_drv(priv))
- dev_info(&spi->dev, "remove\n");
-
- unregister_netdev(priv->netdev);
- free_irq(spi->irq, priv);
- free_netdev(priv->netdev);
-
- return 0;
-}
-
-static struct spi_driver ks8851_driver = {
- .driver = {
- .name = "ks8851",
- .owner = THIS_MODULE,
- },
- .probe = ks8851_probe,
- .remove = __devexit_p(ks8851_remove),
- .suspend = ks8851_suspend,
- .resume = ks8851_resume,
-};
-
-static int __init ks8851_init(void)
-{
- return spi_register_driver(&ks8851_driver);
-}
-
-static void __exit ks8851_exit(void)
-{
- spi_unregister_driver(&ks8851_driver);
-}
-
-module_init(ks8851_init);
-module_exit(ks8851_exit);
-
-MODULE_DESCRIPTION("KS8851 Network driver");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL");
-
-module_param_named(message, msg_enable, int, 0);
-MODULE_PARM_DESC(message, "Message verbosity level (0=none, 31=all)");
-MODULE_ALIAS("spi:ks8851");