/* * smc911x.c * This is a driver for SMSC's LAN911{5,6,7,8} single-chip Ethernet devices. * * Copyright (C) 2005 Sensoria Corp * Derived from the unified SMC91x driver by Nicolas Pitre * and the smsc911x.c reference driver by SMSC * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * Arguments: * watchdog = TX watchdog timeout * tx_fifo_kb = Size of TX FIFO in KB * * History: * 04/16/05 Dustin McIntire Initial version */ static const char version[] = "smc911x.c: v1.0 04-16-2005 by Dustin McIntire \n"; /* Debugging options */ #define ENABLE_SMC_DEBUG_RX 0 #define ENABLE_SMC_DEBUG_TX 0 #define ENABLE_SMC_DEBUG_DMA 0 #define ENABLE_SMC_DEBUG_PKTS 0 #define ENABLE_SMC_DEBUG_MISC 0 #define ENABLE_SMC_DEBUG_FUNC 0 #define SMC_DEBUG_RX ((ENABLE_SMC_DEBUG_RX ? 1 : 0) << 0) #define SMC_DEBUG_TX ((ENABLE_SMC_DEBUG_TX ? 1 : 0) << 1) #define SMC_DEBUG_DMA ((ENABLE_SMC_DEBUG_DMA ? 1 : 0) << 2) #define SMC_DEBUG_PKTS ((ENABLE_SMC_DEBUG_PKTS ? 1 : 0) << 3) #define SMC_DEBUG_MISC ((ENABLE_SMC_DEBUG_MISC ? 1 : 0) << 4) #define SMC_DEBUG_FUNC ((ENABLE_SMC_DEBUG_FUNC ? 1 : 0) << 5) #ifndef SMC_DEBUG #define SMC_DEBUG ( SMC_DEBUG_RX | \ SMC_DEBUG_TX | \ SMC_DEBUG_DMA | \ SMC_DEBUG_PKTS | \ SMC_DEBUG_MISC | \ SMC_DEBUG_FUNC \ ) #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "smc911x.h" /* * Transmit timeout, default 5 seconds. */ static int watchdog = 5000; module_param(watchdog, int, 0400); MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); static int tx_fifo_kb=8; module_param(tx_fifo_kb, int, 0400); MODULE_PARM_DESC(tx_fifo_kb,"transmit FIFO size in KB (1 0 #define DBG(n, dev, args...) \ do { \ if (SMC_DEBUG & (n)) \ netdev_dbg(dev, args); \ } while (0) #define PRINTK(dev, args...) netdev_info(dev, args) #else #define DBG(n, dev, args...) do { } while (0) #define PRINTK(dev, args...) netdev_dbg(dev, args) #endif #if SMC_DEBUG_PKTS > 0 static void PRINT_PKT(u_char *buf, int length) { int i; int remainder; int lines; lines = length / 16; remainder = length % 16; for (i = 0; i < lines ; i ++) { int cur; printk(KERN_DEBUG); for (cur = 0; cur < 8; cur++) { u_char a, b; a = *buf++; b = *buf++; pr_cont("%02x%02x ", a, b); } pr_cont("\n"); } printk(KERN_DEBUG); for (i = 0; i < remainder/2 ; i++) { u_char a, b; a = *buf++; b = *buf++; pr_cont("%02x%02x ", a, b); } pr_cont("\n"); } #else #define PRINT_PKT(x...) do { } while (0) #endif /* this enables an interrupt in the interrupt mask register */ #define SMC_ENABLE_INT(lp, x) do { \ unsigned int __mask; \ __mask = SMC_GET_INT_EN((lp)); \ __mask |= (x); \ SMC_SET_INT_EN((lp), __mask); \ } while (0) /* this disables an interrupt from the interrupt mask register */ #define SMC_DISABLE_INT(lp, x) do { \ unsigned int __mask; \ __mask = SMC_GET_INT_EN((lp)); \ __mask &= ~(x); \ SMC_SET_INT_EN((lp), __mask); \ } while (0) /* * this does a soft reset on the device */ static void smc911x_reset(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned int reg, timeout=0, resets=1, irq_cfg; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); /* Take out of PM setting first */ if ((SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_) == 0) { /* Write to the bytetest will take out of powerdown */ SMC_SET_BYTE_TEST(lp, 0); timeout=10; do { udelay(10); reg = SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_; } while (--timeout && !reg); if (timeout == 0) { PRINTK(dev, "smc911x_reset timeout waiting for PM restore\n"); return; } } /* Disable all interrupts */ spin_lock_irqsave(&lp->lock, flags); SMC_SET_INT_EN(lp, 0); spin_unlock_irqrestore(&lp->lock, flags); while (resets--) { SMC_SET_HW_CFG(lp, HW_CFG_SRST_); timeout=10; do { udelay(10); reg = SMC_GET_HW_CFG(lp); /* If chip indicates reset timeout then try again */ if (reg & HW_CFG_SRST_TO_) { PRINTK(dev, "chip reset timeout, retrying...\n"); resets++; break; } } while (--timeout && (reg & HW_CFG_SRST_)); } if (timeout == 0) { PRINTK(dev, "smc911x_reset timeout waiting for reset\n"); return; } /* make sure EEPROM has finished loading before setting GPIO_CFG */ timeout=1000; while (--timeout && (SMC_GET_E2P_CMD(lp) & E2P_CMD_EPC_BUSY_)) udelay(10); if (timeout == 0){ PRINTK(dev, "smc911x_reset timeout waiting for EEPROM busy\n"); return; } /* Initialize interrupts */ SMC_SET_INT_EN(lp, 0); SMC_ACK_INT(lp, -1); /* Reset the FIFO level and flow control settings */ SMC_SET_HW_CFG(lp, (lp->tx_fifo_kb & 0xF) << 16); //TODO: Figure out what appropriate pause time is SMC_SET_FLOW(lp, FLOW_FCPT_ | FLOW_FCEN_); SMC_SET_AFC_CFG(lp, lp->afc_cfg); /* Set to LED outputs */ SMC_SET_GPIO_CFG(lp, 0x70070000); /* * Deassert IRQ for 1*10us for edge type interrupts * and drive IRQ pin push-pull */ irq_cfg = (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_; #ifdef SMC_DYNAMIC_BUS_CONFIG if (lp->cfg.irq_polarity) irq_cfg |= INT_CFG_IRQ_POL_; #endif SMC_SET_IRQ_CFG(lp, irq_cfg); /* clear anything saved */ if (lp->pending_tx_skb != NULL) { dev_kfree_skb (lp->pending_tx_skb); lp->pending_tx_skb = NULL; dev->stats.tx_errors++; dev->stats.tx_aborted_errors++; } } /* * Enable Interrupts, Receive, and Transmit */ static void smc911x_enable(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned mask, cfg, cr; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); spin_lock_irqsave(&lp->lock, flags); SMC_SET_MAC_ADDR(lp, dev->dev_addr); /* Enable TX */ cfg = SMC_GET_HW_CFG(lp); cfg &= HW_CFG_TX_FIF_SZ_ | 0xFFF; cfg |= HW_CFG_SF_; SMC_SET_HW_CFG(lp, cfg); SMC_SET_FIFO_TDA(lp, 0xFF); /* Update TX stats on every 64 packets received or every 1 sec */ SMC_SET_FIFO_TSL(lp, 64); SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000); SMC_GET_MAC_CR(lp, cr); cr |= MAC_CR_TXEN_ | MAC_CR_HBDIS_; SMC_SET_MAC_CR(lp, cr); SMC_SET_TX_CFG(lp, TX_CFG_TX_ON_); /* Add 2 byte padding to start of packets */ SMC_SET_RX_CFG(lp, (2<<8) & RX_CFG_RXDOFF_); /* Turn on receiver and enable RX */ if (cr & MAC_CR_RXEN_) DBG(SMC_DEBUG_RX, dev, "Receiver already enabled\n"); SMC_SET_MAC_CR(lp, cr | MAC_CR_RXEN_); /* Interrupt on every received packet */ SMC_SET_FIFO_RSA(lp, 0x01); SMC_SET_FIFO_RSL(lp, 0x00); /* now, enable interrupts */ mask = INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_ | INT_EN_RSFL_EN_ | INT_EN_GPT_INT_EN_ | INT_EN_RXDFH_INT_EN_ | INT_EN_RXE_EN_ | INT_EN_PHY_INT_EN_; if (IS_REV_A(lp->revision)) mask|=INT_EN_RDFL_EN_; else { mask|=INT_EN_RDFO_EN_; } SMC_ENABLE_INT(lp, mask); spin_unlock_irqrestore(&lp->lock, flags); } /* * this puts the device in an inactive state */ static void smc911x_shutdown(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned cr; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "%s: --> %s\n", CARDNAME, __func__); /* Disable IRQ's */ SMC_SET_INT_EN(lp, 0); /* Turn of Rx and TX */ spin_lock_irqsave(&lp->lock, flags); SMC_GET_MAC_CR(lp, cr); cr &= ~(MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_); SMC_SET_MAC_CR(lp, cr); SMC_SET_TX_CFG(lp, TX_CFG_STOP_TX_); spin_unlock_irqrestore(&lp->lock, flags); } static inline void smc911x_drop_pkt(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned int fifo_count, timeout, reg; DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "%s: --> %s\n", CARDNAME, __func__); fifo_count = SMC_GET_RX_FIFO_INF(lp) & 0xFFFF; if (fifo_count <= 4) { /* Manually dump the packet data */ while (fifo_count--) SMC_GET_RX_FIFO(lp); } else { /* Fast forward through the bad packet */ SMC_SET_RX_DP_CTRL(lp, RX_DP_CTRL_FFWD_BUSY_); timeout=50; do { udelay(10); reg = SMC_GET_RX_DP_CTRL(lp) & RX_DP_CTRL_FFWD_BUSY_; } while (--timeout && reg); if (timeout == 0) { PRINTK(dev, "timeout waiting for RX fast forward\n"); } } } /* * This is the procedure to handle the receipt of a packet. * It should be called after checking for packet presence in * the RX status FIFO. It must be called with the spin lock * already held. */ static inline void smc911x_rcv(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned int pkt_len, status; struct sk_buff *skb; unsigned char *data; DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "--> %s\n", __func__); status = SMC_GET_RX_STS_FIFO(lp); DBG(SMC_DEBUG_RX, dev, "Rx pkt len %d status 0x%08x\n", (status & 0x3fff0000) >> 16, status & 0xc000ffff); pkt_len = (status & RX_STS_PKT_LEN_) >> 16; if (status & RX_STS_ES_) { /* Deal with a bad packet */ dev->stats.rx_errors++; if (status & RX_STS_CRC_ERR_) dev->stats.rx_crc_errors++; else { if (status & RX_STS_LEN_ERR_) dev->stats.rx_length_errors++; if (status & RX_STS_MCAST_) dev->stats.multicast++; } /* Remove the bad packet data from the RX FIFO */ smc911x_drop_pkt(dev); } else { /* Receive a valid packet */ /* Alloc a buffer with extra room for DMA alignment */ skb = netdev_alloc_skb(dev, pkt_len+32); if (unlikely(skb == NULL)) { PRINTK(dev, "Low memory, rcvd packet dropped.\n"); dev->stats.rx_dropped++; smc911x_drop_pkt(dev); return; } /* Align IP header to 32 bits * Note that the device is configured to add a 2 * byte padding to the packet start, so we really * want to write to the orignal data pointer */ data = skb->data; skb_reserve(skb, 2); skb_put(skb,pkt_len-4); #ifdef SMC_USE_DMA { unsigned int fifo; /* Lower the FIFO threshold if possible */ fifo = SMC_GET_FIFO_INT(lp); if (fifo & 0xFF) fifo--; DBG(SMC_DEBUG_RX, dev, "Setting RX stat FIFO threshold to %d\n", fifo & 0xff); SMC_SET_FIFO_INT(lp, fifo); /* Setup RX DMA */ SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN16_ | ((2<<8) & RX_CFG_RXDOFF_)); lp->rxdma_active = 1; lp->current_rx_skb = skb; SMC_PULL_DATA(lp, data, (pkt_len+2+15) & ~15); /* Packet processing deferred to DMA RX interrupt */ } #else SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN4_ | ((2<<8) & RX_CFG_RXDOFF_)); SMC_PULL_DATA(lp, data, pkt_len+2+3); DBG(SMC_DEBUG_PKTS, dev, "Received packet\n"); PRINT_PKT(data, ((pkt_len - 4) <= 64) ? pkt_len - 4 : 64); skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); dev->stats.rx_packets++; dev->stats.rx_bytes += pkt_len-4; #endif } } /* * This is called to actually send a packet to the chip. */ static void smc911x_hardware_send_pkt(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); struct sk_buff *skb; unsigned int cmdA, cmdB, len; unsigned char *buf; DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n", __func__); BUG_ON(lp->pending_tx_skb == NULL); skb = lp->pending_tx_skb; lp->pending_tx_skb = NULL; /* cmdA {25:24] data alignment [20:16] start offset [10:0] buffer length */ /* cmdB {31:16] pkt tag [10:0] length */ #ifdef SMC_USE_DMA /* 16 byte buffer alignment mode */ buf = (char*)((u32)(skb->data) & ~0xF); len = (skb->len + 0xF + ((u32)skb->data & 0xF)) & ~0xF; cmdA = (1<<24) | (((u32)skb->data & 0xF)<<16) | TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ | skb->len; #else buf = (char*)((u32)skb->data & ~0x3); len = (skb->len + 3 + ((u32)skb->data & 3)) & ~0x3; cmdA = (((u32)skb->data & 0x3) << 16) | TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ | skb->len; #endif /* tag is packet length so we can use this in stats update later */ cmdB = (skb->len << 16) | (skb->len & 0x7FF); DBG(SMC_DEBUG_TX, dev, "TX PKT LENGTH 0x%04x (%d) BUF 0x%p CMDA 0x%08x CMDB 0x%08x\n", len, len, buf, cmdA, cmdB); SMC_SET_TX_FIFO(lp, cmdA); SMC_SET_TX_FIFO(lp, cmdB); DBG(SMC_DEBUG_PKTS, dev, "Transmitted packet\n"); PRINT_PKT(buf, len <= 64 ? len : 64); /* Send pkt via PIO or DMA */ #ifdef SMC_USE_DMA lp->current_tx_skb = skb; SMC_PUSH_DATA(lp, buf, len); /* DMA complete IRQ will free buffer and set jiffies */ #else SMC_PUSH_DATA(lp, buf, len); netif_trans_update(dev); dev_kfree_skb_irq(skb); #endif if (!lp->tx_throttle) { netif_wake_queue(dev); } SMC_ENABLE_INT(lp, INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_); } /* * Since I am not sure if I will have enough room in the chip's ram * to store the packet, I call this routine which either sends it * now, or set the card to generates an interrupt when ready * for the packet. */ static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned int free; unsigned long flags; DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n", __func__); spin_lock_irqsave(&lp->lock, flags); BUG_ON(lp->pending_tx_skb != NULL); free = SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TDFREE_; DBG(SMC_DEBUG_TX, dev, "TX free space %d\n", free); /* Turn off the flow when running out of space in FIFO */ if (free <= SMC911X_TX_FIFO_LOW_THRESHOLD) { DBG(SMC_DEBUG_TX, dev, "Disabling data flow due to low FIFO space (%d)\n", free); /* Reenable when at least 1 packet of size MTU present */ SMC_SET_FIFO_TDA(lp, (SMC911X_TX_FIFO_LOW_THRESHOLD)/64); lp->tx_throttle = 1; netif_stop_queue(dev); } /* Drop packets when we run out of space in TX FIFO * Account for overhead required for: * * Tx command words 8 bytes * Start offset 15 bytes * End padding 15 bytes */ if (unlikely(free < (skb->len + 8 + 15 + 15))) { netdev_warn(dev, "No Tx free space %d < %d\n", free, skb->len); lp->pending_tx_skb = NULL; dev->stats.tx_errors++; dev->stats.tx_dropped++; spin_unlock_irqrestore(&lp->lock, flags); dev_kfree_skb_any(skb); return NETDEV_TX_OK; } #ifdef SMC_USE_DMA { /* If the DMA is already running then defer this packet Tx until * the DMA IRQ starts it */ if (lp->txdma_active) { DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Tx DMA running, deferring packet\n"); lp->pending_tx_skb = skb; netif_stop_queue(dev); spin_unlock_irqrestore(&lp->lock, flags); return NETDEV_TX_OK; } else { DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Activating Tx DMA\n"); lp->txdma_active = 1; } } #endif lp->pending_tx_skb = skb; smc911x_hardware_send_pkt(dev); spin_unlock_irqrestore(&lp->lock, flags); return NETDEV_TX_OK; } /* * This handles a TX status interrupt, which is only called when: * - a TX error occurred, or * - TX of a packet completed. */ static void smc911x_tx(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned int tx_status; DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n", __func__); /* Collect the TX status */ while (((SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16) != 0) { DBG(SMC_DEBUG_TX, dev, "Tx stat FIFO used 0x%04x\n", (SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16); tx_status = SMC_GET_TX_STS_FIFO(lp); dev->stats.tx_packets++; dev->stats.tx_bytes+=tx_status>>16; DBG(SMC_DEBUG_TX, dev, "Tx FIFO tag 0x%04x status 0x%04x\n", (tx_status & 0xffff0000) >> 16, tx_status & 0x0000ffff); /* count Tx errors, but ignore lost carrier errors when in * full-duplex mode */ if ((tx_status & TX_STS_ES_) && !(lp->ctl_rfduplx && !(tx_status & 0x00000306))) { dev->stats.tx_errors++; } if (tx_status & TX_STS_MANY_COLL_) { dev->stats.collisions+=16; dev->stats.tx_aborted_errors++; } else { dev->stats.collisions+=(tx_status & TX_STS_COLL_CNT_) >> 3; } /* carrier error only has meaning for half-duplex communication */ if ((tx_status & (TX_STS_LOC_ | TX_STS_NO_CARR_)) && !lp->ctl_rfduplx) { dev->stats.tx_carrier_errors++; } if (tx_status & TX_STS_LATE_COLL_) { dev->stats.collisions++; dev->stats.tx_aborted_errors++; } } } /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ /* * Reads a register from the MII Management serial interface */ static int smc911x_phy_read(struct net_device *dev, int phyaddr, int phyreg) { struct smc911x_local *lp = netdev_priv(dev); unsigned int phydata; SMC_GET_MII(lp, phyreg, phyaddr, phydata); DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%02x, phydata=0x%04x\n", __func__, phyaddr, phyreg, phydata); return phydata; } /* * Writes a register to the MII Management serial interface */ static void smc911x_phy_write(struct net_device *dev, int phyaddr, int phyreg, int phydata) { struct smc911x_local *lp = netdev_priv(dev); DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", __func__, phyaddr, phyreg, phydata); SMC_SET_MII(lp, phyreg, phyaddr, phydata); } /* * Finds and reports the PHY address (115 and 117 have external * PHY interface 118 has internal only */ static void smc911x_phy_detect(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); int phyaddr; unsigned int cfg, id1, id2; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); lp->phy_type = 0; /* * Scan all 32 PHY addresses if necessary, starting at * PHY#1 to PHY#31, and then PHY#0 last. */ switch(lp->version) { case CHIP_9115: case CHIP_9117: case CHIP_9215: case CHIP_9217: cfg = SMC_GET_HW_CFG(lp); if (cfg & HW_CFG_EXT_PHY_DET_) { cfg &= ~HW_CFG_PHY_CLK_SEL_; cfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_; SMC_SET_HW_CFG(lp, cfg); udelay(10); /* Wait for clocks to stop */ cfg |= HW_CFG_EXT_PHY_EN_; SMC_SET_HW_CFG(lp, cfg); udelay(10); /* Wait for clocks to stop */ cfg &= ~HW_CFG_PHY_CLK_SEL_; cfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_; SMC_SET_HW_CFG(lp, cfg); udelay(10); /* Wait for clocks to stop */ cfg |= HW_CFG_SMI_SEL_; SMC_SET_HW_CFG(lp, cfg); for (phyaddr = 1; phyaddr < 32; ++phyaddr) { /* Read the PHY identifiers */ SMC_GET_PHY_ID1(lp, phyaddr & 31, id1); SMC_GET_PHY_ID2(lp, phyaddr & 31, id2); /* Make sure it is a valid identifier */ if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 && id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) { /* Save the PHY's address */ lp->mii.phy_id = phyaddr & 31; lp->phy_type = id1 << 16 | id2; break; } } if (phyaddr < 32) /* Found an external PHY */ break; } default: /* Internal media only */ SMC_GET_PHY_ID1(lp, 1, id1); SMC_GET_PHY_ID2(lp, 1, id2); /* Save the PHY's address */ lp->mii.phy_id = 1; lp->phy_type = id1 << 16 | id2; } DBG(SMC_DEBUG_MISC, dev, "phy_id1=0x%x, phy_id2=0x%x phyaddr=0x%x\n", id1, id2, lp->mii.phy_id); } /* * Sets the PHY to a configuration as determined by the user. * Called with spin_lock held. */ static int smc911x_phy_fixed(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); int phyaddr = lp->mii.phy_id; int bmcr; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); /* Enter Link Disable state */ SMC_GET_PHY_BMCR(lp, phyaddr, bmcr); bmcr |= BMCR_PDOWN; SMC_SET_PHY_BMCR(lp, phyaddr, bmcr); /* * Set our fixed capabilities * Disable auto-negotiation */ bmcr &= ~BMCR_ANENABLE; if (lp->ctl_rfduplx) bmcr |= BMCR_FULLDPLX; if (lp->ctl_rspeed == 100) bmcr |= BMCR_SPEED100; /* Write our capabilities to the phy control register */ SMC_SET_PHY_BMCR(lp, phyaddr, bmcr); /* Re-Configure the Receive/Phy Control register */ bmcr &= ~BMCR_PDOWN; SMC_SET_PHY_BMCR(lp, phyaddr, bmcr); return 1; } /** * smc911x_phy_reset - reset the phy * @dev: net device * @phy: phy address * * Issue a software reset for the specified PHY and * wait up to 100ms for the reset to complete. We should * not access the PHY for 50ms after issuing the reset. * * The time to wait appears to be dependent on the PHY. * */ static int smc911x_phy_reset(struct net_device *dev, int phy) { struct smc911x_local *lp = netdev_priv(dev); int timeout; unsigned long flags; unsigned int reg; DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__); spin_lock_irqsave(&lp->lock, flags); reg = SMC_GET_PMT_CTRL(lp); reg &= ~0xfffff030; reg |= PMT_CTRL_PHY_RST_; SMC_SET_PMT_CTRL(lp, reg); spin_unlock_irqrestore(&lp->lock, flags); for (timeout = 2; timeout; timeout--) { msleep(50); spin_lock_irqsave(&lp->lock, flags); reg = SMC_GET_PMT_CTRL(lp); spin_unlock_irqrestore(&lp->lock, flags); if (!(reg & PMT_CTRL_PHY_RST_)) { /* extra delay required because the phy may * not be completed with its reset * when PHY_BCR_RESET_ is cleared. 256us * should suffice, but use 500us to be safe */ udelay(500); break; } } return reg & PMT_CTRL_PHY_RST_; } /** * smc911x_phy_powerdown - powerdown phy * @dev: net device * @phy: phy address * * Power down the specified PHY */ static void smc911x_phy_powerdown(struct net_device *dev, int phy) { struct smc911x_local *lp = netdev_priv(dev); unsigned int bmcr; /* Enter Link Disable state */ SMC_GET_PHY_BMCR(lp, phy, bmcr); bmcr |= BMCR_PDOWN; SMC_SET_PHY_BMCR(lp, phy, bmcr); } /** * smc911x_phy_check_media - check the media status and adjust BMCR * @dev: net device * @init: set true for initialisation * * Select duplex mode depending on negotiation state. This * also updates our carrier state. */ static void smc911x_phy_check_media(struct net_device *dev, int init) { struct smc911x_local *lp = netdev_priv(dev); int phyaddr = lp->mii.phy_id; unsigned int bmcr, cr; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) { /* duplex state has changed */ SMC_GET_PHY_BMCR(lp, phyaddr, bmcr); SMC_GET_MAC_CR(lp, cr); if (lp->mii.full_duplex) { DBG(SMC_DEBUG_MISC, dev, "Configuring for full-duplex mode\n"); bmcr |= BMCR_FULLDPLX; cr |= MAC_CR_RCVOWN_; } else { DBG(SMC_DEBUG_MISC, dev, "Configuring for half-duplex mode\n"); bmcr &= ~BMCR_FULLDPLX; cr &= ~MAC_CR_RCVOWN_; } SMC_SET_PHY_BMCR(lp, phyaddr, bmcr); SMC_SET_MAC_CR(lp, cr); } } /* * Configures the specified PHY through the MII management interface * using Autonegotiation. * Calls smc911x_phy_fixed() if the user has requested a certain config. * If RPC ANEG bit is set, the media selection is dependent purely on * the selection by the MII (either in the MII BMCR reg or the result * of autonegotiation.) If the RPC ANEG bit is cleared, the selection * is controlled by the RPC SPEED and RPC DPLX bits. */ static void smc911x_phy_configure(struct work_struct *work) { struct smc911x_local *lp = container_of(work, struct smc911x_local, phy_configure); struct net_device *dev = lp->netdev; int phyaddr = lp->mii.phy_id; int my_phy_caps; /* My PHY capabilities */ int my_ad_caps; /* My Advertised capabilities */ int status; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__); /* * We should not be called if phy_type is zero. */ if (lp->phy_type == 0) return; if (smc911x_phy_reset(dev, phyaddr)) { netdev_info(dev, "PHY reset timed out\n"); return; } spin_lock_irqsave(&lp->lock, flags); /* * Enable PHY Interrupts (for register 18) * Interrupts listed here are enabled */ SMC_SET_PHY_INT_MASK(lp, phyaddr, PHY_INT_MASK_ENERGY_ON_ | PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_REMOTE_FAULT_ | PHY_INT_MASK_LINK_DOWN_); /* If the user requested no auto neg, then go set his request */ if (lp->mii.force_media) { smc911x_phy_fixed(dev); goto smc911x_phy_configure_exit; } /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */ SMC_GET_PHY_BMSR(lp, phyaddr, my_phy_caps); if (!(my_phy_caps & BMSR_ANEGCAPABLE)) { netdev_info(dev, "Auto negotiation NOT supported\n"); smc911x_phy_fixed(dev); goto smc911x_phy_configure_exit; } /* CSMA capable w/ both pauses */ my_ad_caps = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; if (my_phy_caps & BMSR_100BASE4) my_ad_caps |= ADVERTISE_100BASE4; if (my_phy_caps & BMSR_100FULL) my_ad_caps |= ADVERTISE_100FULL; if (my_phy_caps & BMSR_100HALF) my_ad_caps |= ADVERTISE_100HALF; if (my_phy_caps & BMSR_10FULL) my_ad_caps |= ADVERTISE_10FULL; if (my_phy_caps & BMSR_10HALF) my_ad_caps |= ADVERTISE_10HALF; /* Disable capabilities not selected by our user */ if (lp->ctl_rspeed != 100) my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF); if (!lp->ctl_rfduplx) my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL); /* Update our Auto-Neg Advertisement Register */ SMC_SET_PHY_MII_ADV(lp, phyaddr, my_ad_caps); lp->mii.advertising = my_ad_caps; /* * Read the register back. Without this, it appears that when * auto-negotiation is restarted, sometimes it isn't ready and * the link does not come up. */ udelay(10); SMC_GET_PHY_MII_ADV(lp, phyaddr, status); DBG(SMC_DEBUG_MISC, dev, "phy caps=0x%04x\n", my_phy_caps); DBG(SMC_DEBUG_MISC, dev, "phy advertised caps=0x%04x\n", my_ad_caps); /* Restart auto-negotiation process in order to advertise my caps */ SMC_SET_PHY_BMCR(lp, phyaddr, BMCR_ANENABLE | BMCR_ANRESTART); smc911x_phy_check_media(dev, 1); smc911x_phy_configure_exit: spin_unlock_irqrestore(&lp->lock, flags); } /* * smc911x_phy_interrupt * * Purpose: Handle interrupts relating to PHY register 18. This is * called from the "hard" interrupt handler under our private spinlock. */ static void smc911x_phy_interrupt(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); int phyaddr = lp->mii.phy_id; int status; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); if (lp->phy_type == 0) return; smc911x_phy_check_media(dev, 0); /* read to clear status bits */ SMC_GET_PHY_INT_SRC(lp, phyaddr,status); DBG(SMC_DEBUG_MISC, dev, "PHY interrupt status 0x%04x\n", status & 0xffff); DBG(SMC_DEBUG_MISC, dev, "AFC_CFG 0x%08x\n", SMC_GET_AFC_CFG(lp)); } /*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/ /* * This is the main routine of the driver, to handle the device when * it needs some attention. */ static irqreturn_t smc911x_interrupt(int irq, void *dev_id) { struct net_device *dev = dev_id; struct smc911x_local *lp = netdev_priv(dev); unsigned int status, mask, timeout; unsigned int rx_overrun=0, cr, pkts; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); spin_lock_irqsave(&lp->lock, flags); /* Spurious interrupt check */ if ((SMC_GET_IRQ_CFG(lp) & (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) != (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) { spin_unlock_irqrestore(&lp->lock, flags); return IRQ_NONE; } mask = SMC_GET_INT_EN(lp); SMC_SET_INT_EN(lp, 0); /* set a timeout value, so I don't stay here forever */ timeout = 8; do { status = SMC_GET_INT(lp); DBG(SMC_DEBUG_MISC, dev, "INT 0x%08x MASK 0x%08x OUTSIDE MASK 0x%08x\n", status, mask, status & ~mask); status &= mask; if (!status) break; /* Handle SW interrupt condition */ if (status & INT_STS_SW_INT_) { SMC_ACK_INT(lp, INT_STS_SW_INT_); mask &= ~INT_EN_SW_INT_EN_; } /* Handle various error conditions */ if (status & INT_STS_RXE_) { SMC_ACK_INT(lp, INT_STS_RXE_); dev->stats.rx_errors++; } if (status & INT_STS_RXDFH_INT_) { SMC_ACK_INT(lp, INT_STS_RXDFH_INT_); dev->stats.rx_dropped+=SMC_GET_RX_DROP(lp); } /* Undocumented interrupt-what is the right thing to do here? */ if (status & INT_STS_RXDF_INT_) { SMC_ACK_INT(lp, INT_STS_RXDF_INT_); } /* Rx Data FIFO exceeds set level */ if (status & INT_STS_RDFL_) { if (IS_REV_A(lp->revision)) { rx_overrun=1; SMC_GET_MAC_CR(lp, cr); cr &= ~MAC_CR_RXEN_; SMC_SET_MAC_CR(lp, cr); DBG(SMC_DEBUG_RX, dev, "RX overrun\n"); dev->stats.rx_errors++; dev->stats.rx_fifo_errors++; } SMC_ACK_INT(lp, INT_STS_RDFL_); } if (status & INT_STS_RDFO_) { if (!IS_REV_A(lp->revision)) { SMC_GET_MAC_CR(lp, cr); cr &= ~MAC_CR_RXEN_; SMC_SET_MAC_CR(lp, cr); rx_overrun=1; DBG(SMC_DEBUG_RX, dev, "RX overrun\n"); dev->stats.rx_errors++; dev->stats.rx_fifo_errors++; } SMC_ACK_INT(lp, INT_STS_RDFO_); } /* Handle receive condition */ if ((status & INT_STS_RSFL_) || rx_overrun) { unsigned int fifo; DBG(SMC_DEBUG_RX, dev, "RX irq\n"); fifo = SMC_GET_RX_FIFO_INF(lp); pkts = (fifo & RX_FIFO_INF_RXSUSED_) >> 16; DBG(SMC_DEBUG_RX, dev, "Rx FIFO pkts %d, bytes %d\n", pkts, fifo & 0xFFFF); if (pkts != 0) { #ifdef SMC_USE_DMA unsigned int fifo; if (lp->rxdma_active){ DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev, "RX DMA active\n"); /* The DMA is already running so up the IRQ threshold */ fifo = SMC_GET_FIFO_INT(lp) & ~0xFF; fifo |= pkts & 0xFF; DBG(SMC_DEBUG_RX, dev, "Setting RX stat FIFO threshold to %d\n", fifo & 0xff); SMC_SET_FIFO_INT(lp, fifo); } else #endif smc911x_rcv(dev); } SMC_ACK_INT(lp, INT_STS_RSFL_); } /* Handle transmit FIFO available */ if (status & INT_STS_TDFA_) { DBG(SMC_DEBUG_TX, dev, "TX data FIFO space available irq\n"); SMC_SET_FIFO_TDA(lp, 0xFF); lp->tx_throttle = 0; #ifdef SMC_USE_DMA if (!lp->txdma_active) #endif netif_wake_queue(dev); SMC_ACK_INT(lp, INT_STS_TDFA_); } /* Handle transmit done condition */ #if 1 if (status & (INT_STS_TSFL_ | INT_STS_GPT_INT_)) { DBG(SMC_DEBUG_TX | SMC_DEBUG_MISC, dev, "Tx stat FIFO limit (%d) /GPT irq\n", (SMC_GET_FIFO_INT(lp) & 0x00ff0000) >> 16); smc911x_tx(dev); SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000); SMC_ACK_INT(lp, INT_STS_TSFL_); SMC_ACK_INT(lp, INT_STS_TSFL_ | INT_STS_GPT_INT_); } #else if (status & INT_STS_TSFL_) { DBG(SMC_DEBUG_TX, dev, "TX status FIFO limit (%d) irq\n", ?); smc911x_tx(dev); SMC_ACK_INT(lp, INT_STS_TSFL_); } if (status & INT_STS_GPT_INT_) { DBG(SMC_DEBUG_RX, dev, "IRQ_CFG 0x%08x FIFO_INT 0x%08x RX_CFG 0x%08x\n", SMC_GET_IRQ_CFG(lp), SMC_GET_FIFO_INT(lp), SMC_GET_RX_CFG(lp)); DBG(SMC_DEBUG_RX, dev, "Rx Stat FIFO Used 0x%02x Data FIFO Used 0x%04x Stat FIFO 0x%08x\n", (SMC_GET_RX_FIFO_INF(lp) & 0x00ff0000) >> 16, SMC_GET_RX_FIFO_INF(lp) & 0xffff, SMC_GET_RX_STS_FIFO_PEEK(lp)); SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000); SMC_ACK_INT(lp, INT_STS_GPT_INT_); } #endif /* Handle PHY interrupt condition */ if (status & INT_STS_PHY_INT_) { DBG(SMC_DEBUG_MISC, dev, "PHY irq\n"); smc911x_phy_interrupt(dev); SMC_ACK_INT(lp, INT_STS_PHY_INT_); } } while (--timeout); /* restore mask state */ SMC_SET_INT_EN(lp, mask); DBG(SMC_DEBUG_MISC, dev, "Interrupt done (%d loops)\n", 8-timeout); spin_unlock_irqrestore(&lp->lock, flags); return IRQ_HANDLED; } #ifdef SMC_USE_DMA static void smc911x_tx_dma_irq(void *data) { struct smc911x_local *lp = data; struct net_device *dev = lp->netdev; struct sk_buff *skb = lp->current_tx_skb; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "TX DMA irq handler\n"); BUG_ON(skb == NULL); dma_unmap_single(NULL, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE); netif_trans_update(dev); dev_kfree_skb_irq(skb); lp->current_tx_skb = NULL; if (lp->pending_tx_skb != NULL) smc911x_hardware_send_pkt(dev); else { DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "No pending Tx packets. DMA disabled\n"); spin_lock_irqsave(&lp->lock, flags); lp->txdma_active = 0; if (!lp->tx_throttle) { netif_wake_queue(dev); } spin_unlock_irqrestore(&lp->lock, flags); } DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "TX DMA irq completed\n"); } static void smc911x_rx_dma_irq(void *data) { struct smc911x_local *lp = data; struct net_device *dev = lp->netdev; struct sk_buff *skb = lp->current_rx_skb; unsigned long flags; unsigned int pkts; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev, "RX DMA irq handler\n"); dma_unmap_single(NULL, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE); BUG_ON(skb == NULL); lp->current_rx_skb = NULL; PRINT_PKT(skb->data, skb->len); skb->protocol = eth_type_trans(skb, dev); dev->stats.rx_packets++; dev->stats.rx_bytes += skb->len; netif_rx(skb); spin_lock_irqsave(&lp->lock, flags); pkts = (SMC_GET_RX_FIFO_INF(lp) & RX_FIFO_INF_RXSUSED_) >> 16; if (pkts != 0) { smc911x_rcv(dev); }else { lp->rxdma_active = 0; } spin_unlock_irqrestore(&lp->lock, flags); DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev, "RX DMA irq completed. DMA RX FIFO PKTS %d\n", pkts); } #endif /* SMC_USE_DMA */ #ifdef CONFIG_NET_POLL_CONTROLLER /* * Polling receive - used by netconsole and other diagnostic tools * to allow network i/o with interrupts disabled. */ static void smc911x_poll_controller(struct net_device *dev) { disable_irq(dev->irq); smc911x_interrupt(dev->irq, dev); enable_irq(dev->irq); } #endif /* Our watchdog timed out. Called by the networking layer */ static void smc911x_timeout(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); int status, mask; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); spin_lock_irqsave(&lp->lock, flags); status = SMC_GET_INT(lp); mask = SMC_GET_INT_EN(lp); spin_unlock_irqrestore(&lp->lock, flags); DBG(SMC_DEBUG_MISC, dev, "INT 0x%02x MASK 0x%02x\n", status, mask); /* Dump the current TX FIFO contents and restart */ mask = SMC_GET_TX_CFG(lp); SMC_SET_TX_CFG(lp, mask | TX_CFG_TXS_DUMP_ | TX_CFG_TXD_DUMP_); /* * Reconfiguring the PHY doesn't seem like a bad idea here, but * smc911x_phy_configure() calls msleep() which calls schedule_timeout() * which calls schedule(). Hence we use a work queue. */ if (lp->phy_type != 0) schedule_work(&lp->phy_configure); /* We can accept TX packets again */ netif_trans_update(dev); /* prevent tx timeout */ netif_wake_queue(dev); } /* * This routine will, depending on the values passed to it, * either make it accept multicast packets, go into * promiscuous mode (for TCPDUMP and cousins) or accept * a select set of multicast packets */ static void smc911x_set_multicast_list(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned int multicast_table[2]; unsigned int mcr, update_multicast = 0; unsigned long flags; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); spin_lock_irqsave(&lp->lock, flags); SMC_GET_MAC_CR(lp, mcr); spin_unlock_irqrestore(&lp->lock, flags); if (dev->flags & IFF_PROMISC) { DBG(SMC_DEBUG_MISC, dev, "RCR_PRMS\n"); mcr |= MAC_CR_PRMS_; } /* * Here, I am setting this to accept all multicast packets. * I don't need to zero the multicast table, because the flag is * checked before the table is */ else if (dev->flags & IFF_ALLMULTI || netdev_mc_count(dev) > 16) { DBG(SMC_DEBUG_MISC, dev, "RCR_ALMUL\n"); mcr |= MAC_CR_MCPAS_; } /* * This sets the internal hardware table to filter out unwanted * multicast packets before they take up memory. * * The SMC chip uses a hash table where the high 6 bits of the CRC of * address are the offset into the table. If that bit is 1, then the * multicast packet is accepted. Otherwise, it's dropped silently. * * To use the 6 bits as an offset into the table, the high 1 bit is * the number of the 32 bit register, while the low 5 bits are the bit * within that register. */ else if (!netdev_mc_empty(dev)) { struct netdev_hw_addr *ha; /* Set the Hash perfec mode */ mcr |= MAC_CR_HPFILT_; /* start with a table of all zeros: reject all */ memset(multicast_table, 0, sizeof(multicast_table)); netdev_for_each_mc_addr(ha, dev) { u32 position; /* upper 6 bits are used as hash index */ position = ether_crc(ETH_ALEN, ha->addr)>>26; multicast_table[position>>5] |= 1 << (position&0x1f); } /* be sure I get rid of flags I might have set */ mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); /* now, the table can be loaded into the chipset */ update_multicast = 1; } else { DBG(SMC_DEBUG_MISC, dev, "~(MAC_CR_PRMS_|MAC_CR_MCPAS_)\n"); mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); /* * since I'm disabling all multicast entirely, I need to * clear the multicast list */ memset(multicast_table, 0, sizeof(multicast_table)); update_multicast = 1; } spin_lock_irqsave(&lp->lock, flags); SMC_SET_MAC_CR(lp, mcr); if (update_multicast) { DBG(SMC_DEBUG_MISC, dev, "update mcast hash table 0x%08x 0x%08x\n", multicast_table[0], multicast_table[1]); SMC_SET_HASHL(lp, multicast_table[0]); SMC_SET_HASHH(lp, multicast_table[1]); } spin_unlock_irqrestore(&lp->lock, flags); } /* * Open and Initialize the board * * Set up everything, reset the card, etc.. */ static int smc911x_open(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); /* reset the hardware */ smc911x_reset(dev); /* Configure the PHY, initialize the link state */ smc911x_phy_configure(&lp->phy_configure); /* Turn on Tx + Rx */ smc911x_enable(dev); netif_start_queue(dev); return 0; } /* * smc911x_close * * this makes the board clean up everything that it can * and not talk to the outside world. Caused by * an 'ifconfig ethX down' */ static int smc911x_close(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); netif_stop_queue(dev); netif_carrier_off(dev); /* clear everything */ smc911x_shutdown(dev); if (lp->phy_type != 0) { /* We need to ensure that no calls to * smc911x_phy_configure are pending. */ cancel_work_sync(&lp->phy_configure); smc911x_phy_powerdown(dev, lp->mii.phy_id); } if (lp->pending_tx_skb) { dev_kfree_skb(lp->pending_tx_skb); lp->pending_tx_skb = NULL; } return 0; } /* * Ethtool support */ static int smc911x_ethtool_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *cmd) { struct smc911x_local *lp = netdev_priv(dev); int status; unsigned long flags; u32 supported; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); if (lp->phy_type != 0) { spin_lock_irqsave(&lp->lock, flags); mii_ethtool_get_link_ksettings(&lp->mii, cmd); spin_unlock_irqrestore(&lp->lock, flags); } else { supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_TP | SUPPORTED_AUI; if (lp->ctl_rspeed == 10) cmd->base.speed = SPEED_10; else if (lp->ctl_rspeed == 100) cmd->base.speed = SPEED_100; cmd->base.autoneg = AUTONEG_DISABLE; cmd->base.port = 0; SMC_GET_PHY_SPECIAL(lp, lp->mii.phy_id, status); cmd->base.duplex = (status & (PHY_SPECIAL_SPD_10FULL_ | PHY_SPECIAL_SPD_100FULL_)) ? DUPLEX_FULL : DUPLEX_HALF; ethtool_convert_legacy_u32_to_link_mode( cmd->link_modes.supported, supported); } return 0; } static int smc911x_ethtool_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *cmd) { struct smc911x_local *lp = netdev_priv(dev); int ret; unsigned long flags; if (lp->phy_type != 0) { spin_lock_irqsave(&lp->lock, flags); ret = mii_ethtool_set_link_ksettings(&lp->mii, cmd); spin_unlock_irqrestore(&lp->lock, flags); } else { if (cmd->base.autoneg != AUTONEG_DISABLE || cmd->base.speed != SPEED_10 || (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL) || (cmd->base.port != PORT_TP && cmd->base.port != PORT_AUI)) return -EINVAL; lp->ctl_rfduplx = cmd->base.duplex == DUPLEX_FULL; ret = 0; } return ret; } static void smc911x_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { strlcpy(info->driver, CARDNAME, sizeof(info->driver)); strlcpy(info->version, version, sizeof(info->version)); strlcpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info)); } static int smc911x_ethtool_nwayreset(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); int ret = -EINVAL; unsigned long flags; if (lp->phy_type != 0) { spin_lock_irqsave(&lp->lock, flags); ret = mii_nway_restart(&lp->mii); spin_unlock_irqrestore(&lp->lock, flags); } return ret; } static u32 smc911x_ethtool_getmsglevel(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); return lp->msg_enable; } static void smc911x_ethtool_setmsglevel(struct net_device *dev, u32 level) { struct smc911x_local *lp = netdev_priv(dev); lp->msg_enable = level; } static int smc911x_ethtool_getregslen(struct net_device *dev) { /* System regs + MAC regs + PHY regs */ return (((E2P_CMD - ID_REV)/4 + 1) + (WUCSR - MAC_CR)+1 + 32) * sizeof(u32); } static void smc911x_ethtool_getregs(struct net_device *dev, struct ethtool_regs* regs, void *buf) { struct smc911x_local *lp = netdev_priv(dev); unsigned long flags; u32 reg,i,j=0; u32 *data = (u32*)buf; regs->version = lp->version; for(i=ID_REV;i<=E2P_CMD;i+=4) { data[j++] = SMC_inl(lp, i); } for(i=MAC_CR;i<=WUCSR;i++) { spin_lock_irqsave(&lp->lock, flags); SMC_GET_MAC_CSR(lp, i, reg); spin_unlock_irqrestore(&lp->lock, flags); data[j++] = reg; } for(i=0;i<=31;i++) { spin_lock_irqsave(&lp->lock, flags); SMC_GET_MII(lp, i, lp->mii.phy_id, reg); spin_unlock_irqrestore(&lp->lock, flags); data[j++] = reg & 0xFFFF; } } static int smc911x_ethtool_wait_eeprom_ready(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); unsigned int timeout; int e2p_cmd; e2p_cmd = SMC_GET_E2P_CMD(lp); for(timeout=10;(e2p_cmd & E2P_CMD_EPC_BUSY_) && timeout; timeout--) { if (e2p_cmd & E2P_CMD_EPC_TIMEOUT_) { PRINTK(dev, "%s timeout waiting for EEPROM to respond\n", __func__); return -EFAULT; } mdelay(1); e2p_cmd = SMC_GET_E2P_CMD(lp); } if (timeout == 0) { PRINTK(dev, "%s timeout waiting for EEPROM CMD not busy\n", __func__); return -ETIMEDOUT; } return 0; } static inline int smc911x_ethtool_write_eeprom_cmd(struct net_device *dev, int cmd, int addr) { struct smc911x_local *lp = netdev_priv(dev); int ret; if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0) return ret; SMC_SET_E2P_CMD(lp, E2P_CMD_EPC_BUSY_ | ((cmd) & (0x7<<28)) | ((addr) & 0xFF)); return 0; } static inline int smc911x_ethtool_read_eeprom_byte(struct net_device *dev, u8 *data) { struct smc911x_local *lp = netdev_priv(dev); int ret; if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0) return ret; *data = SMC_GET_E2P_DATA(lp); return 0; } static inline int smc911x_ethtool_write_eeprom_byte(struct net_device *dev, u8 data) { struct smc911x_local *lp = netdev_priv(dev); int ret; if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0) return ret; SMC_SET_E2P_DATA(lp, data); return 0; } static int smc911x_ethtool_geteeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data) { u8 eebuf[SMC911X_EEPROM_LEN]; int i, ret; for(i=0;ioffset, eeprom->len); return 0; } static int smc911x_ethtool_seteeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data) { int i, ret; /* Enable erase */ if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_EWEN_, 0 ))!=0) return ret; for(i=eeprom->offset;i<(eeprom->offset+eeprom->len);i++) { /* erase byte */ if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_ERASE_, i ))!=0) return ret; /* write byte */ if ((ret=smc911x_ethtool_write_eeprom_byte(dev, *data))!=0) return ret; if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_WRITE_, i ))!=0) return ret; } return 0; } static int smc911x_ethtool_geteeprom_len(struct net_device *dev) { return SMC911X_EEPROM_LEN; } static const struct ethtool_ops smc911x_ethtool_ops = { .get_drvinfo = smc911x_ethtool_getdrvinfo, .get_msglevel = smc911x_ethtool_getmsglevel, .set_msglevel = smc911x_ethtool_setmsglevel, .nway_reset = smc911x_ethtool_nwayreset, .get_link = ethtool_op_get_link, .get_regs_len = smc911x_ethtool_getregslen, .get_regs = smc911x_ethtool_getregs, .get_eeprom_len = smc911x_ethtool_geteeprom_len, .get_eeprom = smc911x_ethtool_geteeprom, .set_eeprom = smc911x_ethtool_seteeprom, .get_link_ksettings = smc911x_ethtool_get_link_ksettings, .set_link_ksettings = smc911x_ethtool_set_link_ksettings, }; /* * smc911x_findirq * * This routine has a simple purpose -- make the SMC chip generate an * interrupt, so an auto-detect routine can detect it, and find the IRQ, */ static int smc911x_findirq(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); int timeout = 20; unsigned long cookie; DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); cookie = probe_irq_on(); /* * Force a SW interrupt */ SMC_SET_INT_EN(lp, INT_EN_SW_INT_EN_); /* * Wait until positive that the interrupt has been generated */ do { int int_status; udelay(10); int_status = SMC_GET_INT_EN(lp); if (int_status & INT_EN_SW_INT_EN_) break; /* got the interrupt */ } while (--timeout); /* * there is really nothing that I can do here if timeout fails, * as autoirq_report will return a 0 anyway, which is what I * want in this case. Plus, the clean up is needed in both * cases. */ /* and disable all interrupts again */ SMC_SET_INT_EN(lp, 0); /* and return what I found */ return probe_irq_off(cookie); } static const struct net_device_ops smc911x_netdev_ops = { .ndo_open = smc911x_open, .ndo_stop = smc911x_close, .ndo_start_xmit = smc911x_hard_start_xmit, .ndo_tx_timeout = smc911x_timeout, .ndo_set_rx_mode = smc911x_set_multicast_list, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = eth_mac_addr, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = smc911x_poll_controller, #endif }; /* * Function: smc911x_probe(unsigned long ioaddr) * * Purpose: * Tests to see if a given ioaddr points to an SMC911x chip. * Returns a 0 on success * * Algorithm: * (1) see if the endian word is OK * (1) see if I recognize the chip ID in the appropriate register * * Here I do typical initialization tasks. * * o Initialize the structure if needed * o print out my vanity message if not done so already * o print out what type of hardware is detected * o print out the ethernet address * o find the IRQ * o set up my private data * o configure the dev structure with my subroutines * o actually GRAB the irq. * o GRAB the region */ static int smc911x_probe(struct net_device *dev) { struct smc911x_local *lp = netdev_priv(dev); int i, retval; unsigned int val, chip_id, revision; const char *version_string; unsigned long irq_flags; #ifdef SMC_USE_DMA struct dma_slave_config config; dma_cap_mask_t mask; struct pxad_param param; #endif DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__); /* First, see if the endian word is recognized */ val = SMC_GET_BYTE_TEST(lp); DBG(SMC_DEBUG_MISC, dev, "%s: endian probe returned 0x%04x\n", CARDNAME, val); if (val != 0x87654321) { netdev_err(dev, "Invalid chip endian 0x%08x\n", val); retval = -ENODEV; goto err_out; } /* * check if the revision register is something that I * recognize. These might need to be added to later, * as future revisions could be added. */ chip_id = SMC_GET_PN(lp); DBG(SMC_DEBUG_MISC, dev, "%s: id probe returned 0x%04x\n", CARDNAME, chip_id); for(i=0;chip_ids[i].id != 0; i++) { if (chip_ids[i].id == chip_id) break; } if (!chip_ids[i].id) { netdev_err(dev, "Unknown chip ID %04x\n", chip_id); retval = -ENODEV; goto err_out; } version_string = chip_ids[i].name; revision = SMC_GET_REV(lp); DBG(SMC_DEBUG_MISC, dev, "%s: revision = 0x%04x\n", CARDNAME, revision); /* At this point I'll assume that the chip is an SMC911x. */ DBG(SMC_DEBUG_MISC, dev, "%s: Found a %s\n", CARDNAME, chip_ids[i].name); /* Validate the TX FIFO size requested */ if ((tx_fifo_kb < 2) || (tx_fifo_kb > 14)) { netdev_err(dev, "Invalid TX FIFO size requested %d\n", tx_fifo_kb); retval = -EINVAL; goto err_out; } /* fill in some of the fields */ lp->version = chip_ids[i].id; lp->revision = revision; lp->tx_fifo_kb = tx_fifo_kb; /* Reverse calculate the RX FIFO size from the TX */ lp->tx_fifo_size=(lp->tx_fifo_kb<<10) - 512; lp->rx_fifo_size= ((0x4000 - 512 - lp->tx_fifo_size) / 16) * 15; /* Set the automatic flow control values */ switch(lp->tx_fifo_kb) { /* * AFC_HI is about ((Rx Data Fifo Size)*2/3)/64 * AFC_LO is AFC_HI/2 * BACK_DUR is about 5uS*(AFC_LO) rounded down */ case 2:/* 13440 Rx Data Fifo Size */ lp->afc_cfg=0x008C46AF;break; case 3:/* 12480 Rx Data Fifo Size */ lp->afc_cfg=0x0082419F;break; case 4:/* 11520 Rx Data Fifo Size */ lp->afc_cfg=0x00783C9F;break; case 5:/* 10560 Rx Data Fifo Size */ lp->afc_cfg=0x006E374F;break; case 6:/* 9600 Rx Data Fifo Size */ lp->afc_cfg=0x0064328F;break; case 7:/* 8640 Rx Data Fifo Size */ lp->afc_cfg=0x005A2D7F;break; case 8:/* 7680 Rx Data Fifo Size */ lp->afc_cfg=0x0050287F;break; case 9:/* 6720 Rx Data Fifo Size */ lp->afc_cfg=0x0046236F;break; case 10:/* 5760 Rx Data Fifo Size */ lp->afc_cfg=0x003C1E6F;break; case 11:/* 4800 Rx Data Fifo Size */ lp->afc_cfg=0x0032195F;break; /* * AFC_HI is ~1520 bytes less than RX Data Fifo Size * AFC_LO is AFC_HI/2 * BACK_DUR is about 5uS*(AFC_LO) rounded down */ case 12:/* 3840 Rx Data Fifo Size */ lp->afc_cfg=0x0024124F;break; case 13:/* 2880 Rx Data Fifo Size */ lp->afc_cfg=0x0015073F;break; case 14:/* 1920 Rx Data Fifo Size */ lp->afc_cfg=0x0006032F;break; default: PRINTK(dev, "ERROR -- no AFC_CFG setting found"); break; } DBG(SMC_DEBUG_MISC | SMC_DEBUG_TX | SMC_DEBUG_RX, dev, "%s: tx_fifo %d rx_fifo %d afc_cfg 0x%08x\n", CARDNAME, lp->tx_fifo_size, lp->rx_fifo_size, lp->afc_cfg); spin_lock_init(&lp->lock); /* Get the MAC address */ SMC_GET_MAC_ADDR(lp, dev->dev_addr); /* now, reset the chip, and put it into a known state */ smc911x_reset(dev); /* * If dev->irq is 0, then the device has to be banged on to see * what the IRQ is. * * Specifying an IRQ is done with the assumption that the user knows * what (s)he is doing. No checking is done!!!! */ if (dev->irq < 1) { int trials; trials = 3; while (trials--) { dev->irq = smc911x_findirq(dev); if (dev->irq) break; /* kick the card and try again */ smc911x_reset(dev); } } if (dev->irq == 0) { netdev_warn(dev, "Couldn't autodetect your IRQ. Use irq=xx.\n"); retval = -ENODEV; goto err_out; } dev->irq = irq_canonicalize(dev->irq); dev->netdev_ops = &smc911x_netdev_ops; dev->watchdog_timeo = msecs_to_jiffies(watchdog); dev->ethtool_ops = &smc911x_ethtool_ops; INIT_WORK(&lp->phy_configure, smc911x_phy_configure); lp->mii.phy_id_mask = 0x1f; lp->mii.reg_num_mask = 0x1f; lp->mii.force_media = 0; lp->mii.full_duplex = 0; lp->mii.dev = dev; lp->mii.mdio_read = smc911x_phy_read; lp->mii.mdio_write = smc911x_phy_write; /* * Locate the phy, if any. */ smc911x_phy_detect(dev); /* Set default parameters */ lp->msg_enable = NETIF_MSG_LINK; lp->ctl_rfduplx = 1; lp->ctl_rspeed = 100; #ifdef SMC_DYNAMIC_BUS_CONFIG irq_flags = lp->cfg.irq_flags; #else irq_flags = IRQF_SHARED | SMC_IRQ_SENSE; #endif /* Grab the IRQ */ retval = request_irq(dev->irq, smc911x_interrupt, irq_flags, dev->name, dev); if (retval) goto err_out; #ifdef SMC_USE_DMA dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); param.prio = PXAD_PRIO_LOWEST; param.drcmr = -1UL; lp->rxdma = dma_request_slave_channel_compat(mask, pxad_filter_fn, ¶m, &dev->dev, "rx"); lp->txdma = dma_request_slave_channel_compat(mask, pxad_filter_fn, ¶m, &dev->dev, "tx"); lp->rxdma_active = 0; lp->txdma_active = 0; memset(&config, 0, sizeof(config)); config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; config.src_addr = lp->physaddr + RX_DATA_FIFO; config.dst_addr = lp->physaddr + TX_DATA_FIFO; config.src_maxburst = 32; config.dst_maxburst = 32; retval = dmaengine_slave_config(lp->rxdma, &config); if (retval) { dev_err(lp->dev, "dma rx channel configuration failed: %d\n", retval); goto err_out; } retval = dmaengine_slave_config(lp->txdma, &config); if (retval) { dev_err(lp->dev, "dma tx channel configuration failed: %d\n", retval); goto err_out; } #endif retval = register_netdev(dev); if (retval == 0) { /* now, print out the card info, in a short format.. */ netdev_info(dev, "%s (rev %d) at %#lx IRQ %d", version_string, lp->revision, dev->base_addr, dev->irq); #ifdef SMC_USE_DMA if (lp->rxdma) pr_cont(" RXDMA %p", lp->rxdma); if (lp->txdma) pr_cont(" TXDMA %p", lp->txdma); #endif pr_cont("\n"); if (!is_valid_ether_addr(dev->dev_addr)) { netdev_warn(dev, "Invalid ethernet MAC address. Please set using ifconfig\n"); } else { /* Print the Ethernet address */ netdev_info(dev, "Ethernet addr: %pM\n", dev->dev_addr); } if (lp->phy_type == 0) { PRINTK(dev, "No PHY found\n"); } else if ((lp->phy_type & ~0xff) == LAN911X_INTERNAL_PHY_ID) { PRINTK(dev, "LAN911x Internal PHY\n"); } else { PRINTK(dev, "External PHY 0x%08x\n", lp->phy_type); } } err_out: #ifdef SMC_USE_DMA if (retval) { if (lp->rxdma) dma_release_channel(lp->rxdma); if (lp->txdma) dma_release_channel(lp->txdma); } #endif return retval; } /* * smc911x_drv_probe(void) * * Output: * 0 --> there is a device * anything else, error */ static int smc911x_drv_probe(struct platform_device *pdev) { struct net_device *ndev; struct resource *res; struct smc911x_local *lp; void __iomem *addr; int ret; /* ndev is not valid yet, so avoid passing it in. */ DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { ret = -ENODEV; goto out; } /* * Request the regions. */ if (!request_mem_region(res->start, SMC911X_IO_EXTENT, CARDNAME)) { ret = -EBUSY; goto out; } ndev = alloc_etherdev(sizeof(struct smc911x_local)); if (!ndev) { ret = -ENOMEM; goto release_1; } SET_NETDEV_DEV(ndev, &pdev->dev); ndev->dma = (unsigned char)-1; ndev->irq = platform_get_irq(pdev, 0); lp = netdev_priv(ndev); lp->netdev = ndev; #ifdef SMC_DYNAMIC_BUS_CONFIG { struct smc911x_platdata *pd = dev_get_platdata(&pdev->dev); if (!pd) { ret = -EINVAL; goto release_both; } memcpy(&lp->cfg, pd, sizeof(lp->cfg)); } #endif addr = ioremap(res->start, SMC911X_IO_EXTENT); if (!addr) { ret = -ENOMEM; goto release_both; } platform_set_drvdata(pdev, ndev); lp->base = addr; ndev->base_addr = res->start; ret = smc911x_probe(ndev); if (ret != 0) { iounmap(addr); release_both: free_netdev(ndev); release_1: release_mem_region(res->start, SMC911X_IO_EXTENT); out: pr_info("%s: not found (%d).\n", CARDNAME, ret); } #ifdef SMC_USE_DMA else { lp->physaddr = res->start; lp->dev = &pdev->dev; } #endif return ret; } static int smc911x_drv_remove(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); struct smc911x_local *lp = netdev_priv(ndev); struct resource *res; DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__); unregister_netdev(ndev); free_irq(ndev->irq, ndev); #ifdef SMC_USE_DMA { if (lp->rxdma) dma_release_channel(lp->rxdma); if (lp->txdma) dma_release_channel(lp->txdma); } #endif iounmap(lp->base); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(res->start, SMC911X_IO_EXTENT); free_netdev(ndev); return 0; } static int smc911x_drv_suspend(struct platform_device *dev, pm_message_t state) { struct net_device *ndev = platform_get_drvdata(dev); struct smc911x_local *lp = netdev_priv(ndev); DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__); if (ndev) { if (netif_running(ndev)) { netif_device_detach(ndev); smc911x_shutdown(ndev); #if POWER_DOWN /* Set D2 - Energy detect only setting */ SMC_SET_PMT_CTRL(lp, 2<<12); #endif } } return 0; } static int smc911x_drv_resume(struct platform_device *dev) { struct net_device *ndev = platform_get_drvdata(dev); DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__); if (ndev) { struct smc911x_local *lp = netdev_priv(ndev); if (netif_running(ndev)) { smc911x_reset(ndev); if (lp->phy_type != 0) smc911x_phy_configure(&lp->phy_configure); smc911x_enable(ndev); netif_device_attach(ndev); } } return 0; } static struct platform_driver smc911x_driver = { .probe = smc911x_drv_probe, .remove = smc911x_drv_remove, .suspend = smc911x_drv_suspend, .resume = smc911x_drv_resume, .driver = { .name = CARDNAME, }, }; module_platform_driver(smc911x_driver);