diff options
| -rw-r--r-- | drivers/net/ethernet/smsc/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/net/ethernet/smsc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/smsc/smc911x.c | 2198 | ||||
| -rw-r--r-- | drivers/net/ethernet/smsc/smc911x.h | 901 | ||||
| -rw-r--r-- | include/linux/smc911x.h | 14 |
5 files changed, 0 insertions, 3128 deletions
diff --git a/drivers/net/ethernet/smsc/Kconfig b/drivers/net/ethernet/smsc/Kconfig index 2524c907f386..5f22a8a4d27b 100644 --- a/drivers/net/ethernet/smsc/Kconfig +++ b/drivers/net/ethernet/smsc/Kconfig @@ -75,20 +75,6 @@ config EPIC100 More specific information and updates are available from <http://www.scyld.com/network/epic100.html>. -config SMC911X - tristate "SMSC LAN911[5678] support" - select CRC32 - select MII - depends on (ARM || SUPERH || COMPILE_TEST) - help - This is a driver for SMSC's LAN911x series of Ethernet chipsets - including the new LAN9115, LAN9116, LAN9117, and LAN9118. - Say Y here if you want it compiled into the kernel. - - This driver is also available as a module. The module will be - called smc911x. If you want to compile it as a module, say M - here and read <file:Documentation/kbuild/modules.rst> - config SMSC911X tristate "SMSC LAN911x/LAN921x families embedded ethernet support" depends on HAS_IOMEM diff --git a/drivers/net/ethernet/smsc/Makefile b/drivers/net/ethernet/smsc/Makefile index 4105912b1629..1501fa364c13 100644 --- a/drivers/net/ethernet/smsc/Makefile +++ b/drivers/net/ethernet/smsc/Makefile @@ -8,5 +8,4 @@ obj-$(CONFIG_SMC91X) += smc91x.o obj-$(CONFIG_PCMCIA_SMC91C92) += smc91c92_cs.o obj-$(CONFIG_EPIC100) += epic100.o obj-$(CONFIG_SMSC9420) += smsc9420.o -obj-$(CONFIG_SMC911X) += smc911x.o obj-$(CONFIG_SMSC911X) += smsc911x.o diff --git a/drivers/net/ethernet/smsc/smc911x.c b/drivers/net/ethernet/smsc/smc911x.c deleted file mode 100644 index 52ecfb461c41..000000000000 --- a/drivers/net/ethernet/smsc/smc911x.c +++ /dev/null @@ -1,2198 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * 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 - * - * 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 <dustin@sensoria.com>\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 <linux/module.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/crc32.h> -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/spinlock.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/workqueue.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> - -#include <linux/dmaengine.h> - -#include <asm/io.h> - -#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<x<15)(default=8)"); - -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:smc911x"); - -/* - * The internal workings of the driver. If you are changing anything - * here with the SMC stuff, you should have the datasheet and know - * what you are doing. - */ -#define CARDNAME "smc911x" - -/* - * Use power-down feature of the chip - */ -#define POWER_DOWN 1 - -#if SMC_DEBUG > 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...) \ - while (0) { \ - netdev_dbg(dev, args); \ - } -#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 -static inline void PRINT_PKT(u_char *buf, int length) { } -#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, min(pkt_len - 4, 64U)); - 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 *)((uintptr_t)skb->data & ~0x3); - len = (skb->len + 3 + ((uintptr_t)skb->data & 3)) & ~0x3; - cmdA = (((uintptr_t)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, min(len, 64U)); - - /* 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 netdev_tx_t -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; - } - fallthrough; - 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 __always_unused; - 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 __always_unused; - - 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_); |