diff options
author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-05-12 20:21:07 -0700 |
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committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-10 20:04:03 -0700 |
commit | ae150435b59e68de00546330241727f2fec54517 (patch) | |
tree | 29a1cb71053306e8a8e0dff1f927d16a9a396917 /drivers/net/smc91x.c | |
parent | aa43c2158d5ae1dc76cccb08cd57a3ffd32c3825 (diff) | |
download | linux-ae150435b59e68de00546330241727f2fec54517.tar.bz2 |
smsc: Move the SMC (SMSC) drivers
Moves the SMC (SMSC) drivers into drivers/net/ethernet/smsc/ and the
necessary Kconfig and Makefile changes. Also did some cleanup
of NET_VENDOR_SMC Kconfig tag for the 8390 based drivers.
CC: Nicolas Pitre <nico@fluxnic.net>
CC: Donald Becker <becker@scyld.com>
CC: Erik Stahlman <erik@vt.edu>
CC: Dustin McIntire <dustin@sensoria.com>
CC: Steve Glendinning <steve.glendinning@smsc.com>
CC: David Hinds <dahinds@users.sourceforge.net>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/smc91x.c')
-rw-r--r-- | drivers/net/smc91x.c | 2431 |
1 files changed, 0 insertions, 2431 deletions
diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c deleted file mode 100644 index 2b1d254d59af..000000000000 --- a/drivers/net/smc91x.c +++ /dev/null @@ -1,2431 +0,0 @@ -/* - * smc91x.c - * This is a driver for SMSC's 91C9x/91C1xx single-chip Ethernet devices. - * - * Copyright (C) 1996 by Erik Stahlman - * Copyright (C) 2001 Standard Microsystems Corporation - * Developed by Simple Network Magic Corporation - * Copyright (C) 2003 Monta Vista Software, Inc. - * Unified SMC91x driver by Nicolas Pitre - * - * 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, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Arguments: - * io = for the base address - * irq = for the IRQ - * nowait = 0 for normal wait states, 1 eliminates additional wait states - * - * original author: - * Erik Stahlman <erik@vt.edu> - * - * hardware multicast code: - * Peter Cammaert <pc@denkart.be> - * - * contributors: - * Daris A Nevil <dnevil@snmc.com> - * Nicolas Pitre <nico@fluxnic.net> - * Russell King <rmk@arm.linux.org.uk> - * - * History: - * 08/20/00 Arnaldo Melo fix kfree(skb) in smc_hardware_send_packet - * 12/15/00 Christian Jullien fix "Warning: kfree_skb on hard IRQ" - * 03/16/01 Daris A Nevil modified smc9194.c for use with LAN91C111 - * 08/22/01 Scott Anderson merge changes from smc9194 to smc91111 - * 08/21/01 Pramod B Bhardwaj added support for RevB of LAN91C111 - * 12/20/01 Jeff Sutherland initial port to Xscale PXA with DMA support - * 04/07/03 Nicolas Pitre unified SMC91x driver, killed irq races, - * more bus abstraction, big cleanup, etc. - * 29/09/03 Russell King - add driver model support - * - ethtool support - * - convert to use generic MII interface - * - add link up/down notification - * - don't try to handle full negotiation in - * smc_phy_configure - * - clean up (and fix stack overrun) in PHY - * MII read/write functions - * 22/09/04 Nicolas Pitre big update (see commit log for details) - */ -static const char version[] = - "smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@fluxnic.net>\n"; - -/* Debugging level */ -#ifndef SMC_DEBUG -#define SMC_DEBUG 0 -#endif - - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/crc32.h> -#include <linux/platform_device.h> -#include <linux/spinlock.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/workqueue.h> -#include <linux/of.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> - -#include <asm/io.h> - -#include "smc91x.h" - -#ifndef SMC_NOWAIT -# define SMC_NOWAIT 0 -#endif -static int nowait = SMC_NOWAIT; -module_param(nowait, int, 0400); -MODULE_PARM_DESC(nowait, "set to 1 for no wait state"); - -/* - * Transmit timeout, default 5 seconds. - */ -static int watchdog = 1000; -module_param(watchdog, int, 0400); -MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); - -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:smc91x"); - -/* - * 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 "smc91x" - -/* - * Use power-down feature of the chip - */ -#define POWER_DOWN 1 - -/* - * Wait time for memory to be free. This probably shouldn't be - * tuned that much, as waiting for this means nothing else happens - * in the system - */ -#define MEMORY_WAIT_TIME 16 - -/* - * The maximum number of processing loops allowed for each call to the - * IRQ handler. - */ -#define MAX_IRQ_LOOPS 8 - -/* - * This selects whether TX packets are sent one by one to the SMC91x internal - * memory and throttled until transmission completes. This may prevent - * RX overruns a litle by keeping much of the memory free for RX packets - * but to the expense of reduced TX throughput and increased IRQ overhead. - * Note this is not a cure for a too slow data bus or too high IRQ latency. - */ -#define THROTTLE_TX_PKTS 0 - -/* - * The MII clock high/low times. 2x this number gives the MII clock period - * in microseconds. (was 50, but this gives 6.4ms for each MII transaction!) - */ -#define MII_DELAY 1 - -#if SMC_DEBUG > 0 -#define DBG(n, args...) \ - do { \ - if (SMC_DEBUG >= (n)) \ - printk(args); \ - } while (0) - -#define PRINTK(args...) printk(args) -#else -#define DBG(n, args...) do { } while(0) -#define PRINTK(args...) printk(KERN_DEBUG args) -#endif - -#if SMC_DEBUG > 3 -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; - for (cur = 0; cur < 8; cur++) { - u_char a, b; - a = *buf++; - b = *buf++; - printk("%02x%02x ", a, b); - } - printk("\n"); - } - for (i = 0; i < remainder/2 ; i++) { - u_char a, b; - a = *buf++; - b = *buf++; - printk("%02x%02x ", a, b); - } - printk("\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 char mask; \ - unsigned long smc_enable_flags; \ - spin_lock_irqsave(&lp->lock, smc_enable_flags); \ - mask = SMC_GET_INT_MASK(lp); \ - mask |= (x); \ - SMC_SET_INT_MASK(lp, mask); \ - spin_unlock_irqrestore(&lp->lock, smc_enable_flags); \ -} while (0) - -/* this disables an interrupt from the interrupt mask register */ -#define SMC_DISABLE_INT(lp, x) do { \ - unsigned char mask; \ - unsigned long smc_disable_flags; \ - spin_lock_irqsave(&lp->lock, smc_disable_flags); \ - mask = SMC_GET_INT_MASK(lp); \ - mask &= ~(x); \ - SMC_SET_INT_MASK(lp, mask); \ - spin_unlock_irqrestore(&lp->lock, smc_disable_flags); \ -} while (0) - -/* - * Wait while MMU is busy. This is usually in the order of a few nanosecs - * if at all, but let's avoid deadlocking the system if the hardware - * decides to go south. - */ -#define SMC_WAIT_MMU_BUSY(lp) do { \ - if (unlikely(SMC_GET_MMU_CMD(lp) & MC_BUSY)) { \ - unsigned long timeout = jiffies + 2; \ - while (SMC_GET_MMU_CMD(lp) & MC_BUSY) { \ - if (time_after(jiffies, timeout)) { \ - printk("%s: timeout %s line %d\n", \ - dev->name, __FILE__, __LINE__); \ - break; \ - } \ - cpu_relax(); \ - } \ - } \ -} while (0) - - -/* - * this does a soft reset on the device - */ -static void smc_reset(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int ctl, cfg; - struct sk_buff *pending_skb; - - DBG(2, "%s: %s\n", dev->name, __func__); - - /* Disable all interrupts, block TX tasklet */ - spin_lock_irq(&lp->lock); - SMC_SELECT_BANK(lp, 2); - SMC_SET_INT_MASK(lp, 0); - pending_skb = lp->pending_tx_skb; - lp->pending_tx_skb = NULL; - spin_unlock_irq(&lp->lock); - - /* free any pending tx skb */ - if (pending_skb) { - dev_kfree_skb(pending_skb); - dev->stats.tx_errors++; - dev->stats.tx_aborted_errors++; - } - - /* - * This resets the registers mostly to defaults, but doesn't - * affect EEPROM. That seems unnecessary - */ - SMC_SELECT_BANK(lp, 0); - SMC_SET_RCR(lp, RCR_SOFTRST); - - /* - * Setup the Configuration Register - * This is necessary because the CONFIG_REG is not affected - * by a soft reset - */ - SMC_SELECT_BANK(lp, 1); - - cfg = CONFIG_DEFAULT; - - /* - * Setup for fast accesses if requested. If the card/system - * can't handle it then there will be no recovery except for - * a hard reset or power cycle - */ - if (lp->cfg.flags & SMC91X_NOWAIT) - cfg |= CONFIG_NO_WAIT; - - /* - * Release from possible power-down state - * Configuration register is not affected by Soft Reset - */ - cfg |= CONFIG_EPH_POWER_EN; - - SMC_SET_CONFIG(lp, cfg); - - /* this should pause enough for the chip to be happy */ - /* - * elaborate? What does the chip _need_? --jgarzik - * - * This seems to be undocumented, but something the original - * driver(s) have always done. Suspect undocumented timing - * info/determined empirically. --rmk - */ - udelay(1); - - /* Disable transmit and receive functionality */ - SMC_SELECT_BANK(lp, 0); - SMC_SET_RCR(lp, RCR_CLEAR); - SMC_SET_TCR(lp, TCR_CLEAR); - - SMC_SELECT_BANK(lp, 1); - ctl = SMC_GET_CTL(lp) | CTL_LE_ENABLE; - - /* - * Set the control register to automatically release successfully - * transmitted packets, to make the best use out of our limited - * memory - */ - if(!THROTTLE_TX_PKTS) - ctl |= CTL_AUTO_RELEASE; - else - ctl &= ~CTL_AUTO_RELEASE; - SMC_SET_CTL(lp, ctl); - - /* Reset the MMU */ - SMC_SELECT_BANK(lp, 2); - SMC_SET_MMU_CMD(lp, MC_RESET); - SMC_WAIT_MMU_BUSY(lp); -} - -/* - * Enable Interrupts, Receive, and Transmit - */ -static void smc_enable(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - int mask; - - DBG(2, "%s: %s\n", dev->name, __func__); - - /* see the header file for options in TCR/RCR DEFAULT */ - SMC_SELECT_BANK(lp, 0); - SMC_SET_TCR(lp, lp->tcr_cur_mode); - SMC_SET_RCR(lp, lp->rcr_cur_mode); - - SMC_SELECT_BANK(lp, 1); - SMC_SET_MAC_ADDR(lp, dev->dev_addr); - - /* now, enable interrupts */ - mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT; - if (lp->version >= (CHIP_91100 << 4)) - mask |= IM_MDINT; - SMC_SELECT_BANK(lp, 2); - SMC_SET_INT_MASK(lp, mask); - - /* - * From this point the register bank must _NOT_ be switched away - * to something else than bank 2 without proper locking against - * races with any tasklet or interrupt handlers until smc_shutdown() - * or smc_reset() is called. - */ -} - -/* - * this puts the device in an inactive state - */ -static void smc_shutdown(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - struct sk_buff *pending_skb; - - DBG(2, "%s: %s\n", CARDNAME, __func__); - - /* no more interrupts for me */ - spin_lock_irq(&lp->lock); - SMC_SELECT_BANK(lp, 2); - SMC_SET_INT_MASK(lp, 0); - pending_skb = lp->pending_tx_skb; - lp->pending_tx_skb = NULL; - spin_unlock_irq(&lp->lock); - if (pending_skb) - dev_kfree_skb(pending_skb); - - /* and tell the card to stay away from that nasty outside world */ - SMC_SELECT_BANK(lp, 0); - SMC_SET_RCR(lp, RCR_CLEAR); - SMC_SET_TCR(lp, TCR_CLEAR); - -#ifdef POWER_DOWN - /* finally, shut the chip down */ - SMC_SELECT_BANK(lp, 1); - SMC_SET_CONFIG(lp, SMC_GET_CONFIG(lp) & ~CONFIG_EPH_POWER_EN); -#endif -} - -/* - * This is the procedure to handle the receipt of a packet. - */ -static inline void smc_rcv(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int packet_number, status, packet_len; - - DBG(3, "%s: %s\n", dev->name, __func__); - - packet_number = SMC_GET_RXFIFO(lp); - if (unlikely(packet_number & RXFIFO_REMPTY)) { - PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name); - return; - } - - /* read from start of packet */ - SMC_SET_PTR(lp, PTR_READ | PTR_RCV | PTR_AUTOINC); - - /* First two words are status and packet length */ - SMC_GET_PKT_HDR(lp, status, packet_len); - packet_len &= 0x07ff; /* mask off top bits */ - DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n", - dev->name, packet_number, status, - packet_len, packet_len); - - back: - if (unlikely(packet_len < 6 || status & RS_ERRORS)) { - if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) { - /* accept VLAN packets */ - status &= ~RS_TOOLONG; - goto back; - } - if (packet_len < 6) { - /* bloody hardware */ - printk(KERN_ERR "%s: fubar (rxlen %u status %x\n", - dev->name, packet_len, status); - status |= RS_TOOSHORT; - } - SMC_WAIT_MMU_BUSY(lp); - SMC_SET_MMU_CMD(lp, MC_RELEASE); - dev->stats.rx_errors++; - if (status & RS_ALGNERR) - dev->stats.rx_frame_errors++; - if (status & (RS_TOOSHORT | RS_TOOLONG)) - dev->stats.rx_length_errors++; - if (status & RS_BADCRC) - dev->stats.rx_crc_errors++; - } else { - struct sk_buff *skb; - unsigned char *data; - unsigned int data_len; - - /* set multicast stats */ - if (status & RS_MULTICAST) - dev->stats.multicast++; - - /* - * Actual payload is packet_len - 6 (or 5 if odd byte). - * We want skb_reserve(2) and the final ctrl word - * (2 bytes, possibly containing the payload odd byte). - * Furthermore, we add 2 bytes to allow rounding up to - * multiple of 4 bytes on 32 bit buses. - * Hence packet_len - 6 + 2 + 2 + 2. - */ - skb = dev_alloc_skb(packet_len); - if (unlikely(skb == NULL)) { - printk(KERN_NOTICE "%s: Low memory, packet dropped.\n", - dev->name); - SMC_WAIT_MMU_BUSY(lp); - SMC_SET_MMU_CMD(lp, MC_RELEASE); - dev->stats.rx_dropped++; - return; - } - - /* Align IP header to 32 bits */ - skb_reserve(skb, 2); - - /* BUG: the LAN91C111 rev A never sets this bit. Force it. */ - if (lp->version == 0x90) - status |= RS_ODDFRAME; - - /* - * If odd length: packet_len - 5, - * otherwise packet_len - 6. - * With the trailing ctrl byte it's packet_len - 4. - */ - data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6); - data = skb_put(skb, data_len); - SMC_PULL_DATA(lp, data, packet_len - 4); - - SMC_WAIT_MMU_BUSY(lp); - SMC_SET_MMU_CMD(lp, MC_RELEASE); - - PRINT_PKT(data, packet_len - 4); - - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - dev->stats.rx_packets++; - dev->stats.rx_bytes += data_len; - } -} - -#ifdef CONFIG_SMP -/* - * On SMP we have the following problem: - * - * A = smc_hardware_send_pkt() - * B = smc_hard_start_xmit() - * C = smc_interrupt() - * - * A and B can never be executed simultaneously. However, at least on UP, - * it is possible (and even desirable) for C to interrupt execution of - * A or B in order to have better RX reliability and avoid overruns. - * C, just like A and B, must have exclusive access to the chip and - * each of them must lock against any other concurrent access. - * Unfortunately this is not possible to have C suspend execution of A or - * B taking place on another CPU. On UP this is no an issue since A and B - * are run from softirq context and C from hard IRQ context, and there is - * no other CPU where concurrent access can happen. - * If ever there is a way to force at least B and C to always be executed - * on the same CPU then we could use read/write locks to protect against - * any other concurrent access and C would always interrupt B. But life - * isn't that easy in a SMP world... - */ -#define smc_special_trylock(lock, flags) \ -({ \ - int __ret; \ - local_irq_save(flags); \ - __ret = spin_trylock(lock); \ - if (!__ret) \ - local_irq_restore(flags); \ - __ret; \ -}) -#define smc_special_lock(lock, flags) spin_lock_irqsave(lock, flags) -#define smc_special_unlock(lock, flags) spin_unlock_irqrestore(lock, flags) -#else -#define smc_special_trylock(lock, flags) (flags == flags) -#define smc_special_lock(lock, flags) do { flags = 0; } while (0) -#define smc_special_unlock(lock, flags) do { flags = 0; } while (0) -#endif - -/* - * This is called to actually send a packet to the chip. - */ -static void smc_hardware_send_pkt(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - struct sk_buff *skb; - unsigned int packet_no, len; - unsigned char *buf; - unsigned long flags; - - DBG(3, "%s: %s\n", dev->name, __func__); - - if (!smc_special_trylock(&lp->lock, flags)) { - netif_stop_queue(dev); - tasklet_schedule(&lp->tx_task); - return; - } - - skb = lp->pending_tx_skb; - if (unlikely(!skb)) { - smc_special_unlock(&lp->lock, flags); - return; - } - lp->pending_tx_skb = NULL; - - packet_no = SMC_GET_AR(lp); - if (unlikely(packet_no & AR_FAILED)) { - printk("%s: Memory allocation failed.\n", dev->name); - dev->stats.tx_errors++; - dev->stats.tx_fifo_errors++; - smc_special_unlock(&lp->lock, flags); - goto done; - } - - /* point to the beginning of the packet */ - SMC_SET_PN(lp, packet_no); - SMC_SET_PTR(lp, PTR_AUTOINC); - - buf = skb->data; - len = skb->len; - DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n", - dev->name, packet_no, len, len, buf); - PRINT_PKT(buf, len); - - /* - * Send the packet length (+6 for status words, length, and ctl. - * The card will pad to 64 bytes with zeroes if packet is too small. - */ - SMC_PUT_PKT_HDR(lp, 0, len + 6); - - /* send the actual data */ - SMC_PUSH_DATA(lp, buf, len & ~1); - - /* Send final ctl word with the last byte if there is one */ - SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG(lp)); - - /* - * If THROTTLE_TX_PKTS is set, we stop the queue here. This will - * have the effect of having at most one packet queued for TX - * in the chip's memory at all time. - * - * If THROTTLE_TX_PKTS is not set then the queue is stopped only - * when memory allocation (MC_ALLOC) does not succeed right away. - */ - if (THROTTLE_TX_PKTS) - netif_stop_queue(dev); - - /* queue the packet for TX */ - SMC_SET_MMU_CMD(lp, MC_ENQUEUE); - smc_special_unlock(&lp->lock, flags); - - dev->trans_start = jiffies; - dev->stats.tx_packets++; - dev->stats.tx_bytes += len; - - SMC_ENABLE_INT(lp, IM_TX_INT | IM_TX_EMPTY_INT); - -done: if (!THROTTLE_TX_PKTS) - netif_wake_queue(dev); - - dev_kfree_skb(skb); -} - -/* - * 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 smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int numPages, poll_count, status; - unsigned long flags; - - DBG(3, "%s: %s\n", dev->name, __func__); - - BUG_ON(lp->pending_tx_skb != NULL); - - /* - * The MMU wants the number of pages to be the number of 256 bytes - * 'pages', minus 1 (since a packet can't ever have 0 pages :)) - * - * The 91C111 ignores the size bits, but earlier models don't. - * - * Pkt size for allocating is data length +6 (for additional status - * words, length and ctl) - * - * If odd size then last byte is included in ctl word. - */ - numPages = ((skb->len & ~1) + (6 - 1)) >> 8; - if (unlikely(numPages > 7)) { - printk("%s: Far too big packet error.\n", dev->name); - dev->stats.tx_errors++; - dev->stats.tx_dropped++; - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } - - smc_special_lock(&lp->lock, flags); - - /* now, try to allocate the memory */ - SMC_SET_MMU_CMD(lp, MC_ALLOC | numPages); - - /* - * Poll the chip for a short amount of time in case the - * allocation succeeds quickly. - */ - poll_count = MEMORY_WAIT_TIME; - do { - status = SMC_GET_INT(lp); - if (status & IM_ALLOC_INT) { - SMC_ACK_INT(lp, IM_ALLOC_INT); - break; - } - } while (--poll_count); - - smc_special_unlock(&lp->lock, flags); - - lp->pending_tx_skb = skb; - if (!poll_count) { - /* oh well, wait until the chip finds memory later */ - netif_stop_queue(dev); - DBG(2, "%s: TX memory allocation deferred.\n", dev->name); - SMC_ENABLE_INT(lp, IM_ALLOC_INT); - } else { - /* - * Allocation succeeded: push packet to the chip's own memory - * immediately. - */ - smc_hardware_send_pkt((unsigned long)dev); - } - - return NETDEV_TX_OK; -} - -/* - * This handles a TX interrupt, which is only called when: - * - a TX error occurred, or - * - CTL_AUTO_RELEASE is not set and TX of a packet completed. - */ -static void smc_tx(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int saved_packet, packet_no, tx_status, pkt_len; - - DBG(3, "%s: %s\n", dev->name, __func__); - - /* If the TX FIFO is empty then nothing to do */ - packet_no = SMC_GET_TXFIFO(lp); - if (unlikely(packet_no & TXFIFO_TEMPTY)) { - PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name); - return; - } - - /* select packet to read from */ - saved_packet = SMC_GET_PN(lp); - SMC_SET_PN(lp, packet_no); - - /* read the first word (status word) from this packet */ - SMC_SET_PTR(lp, PTR_AUTOINC | PTR_READ); - SMC_GET_PKT_HDR(lp, tx_status, pkt_len); - DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n", - dev->name, tx_status, packet_no); - - if (!(tx_status & ES_TX_SUC)) - dev->stats.tx_errors++; - - if (tx_status & ES_LOSTCARR) - dev->stats.tx_carrier_errors++; - - if (tx_status & (ES_LATCOL | ES_16COL)) { - PRINTK("%s: %s occurred on last xmit\n", dev->name, - (tx_status & ES_LATCOL) ? - "late collision" : "too many collisions"); - dev->stats.tx_window_errors++; - if (!(dev->stats.tx_window_errors & 63) && net_ratelimit()) { - printk(KERN_INFO "%s: unexpectedly large number of " - "bad collisions. Please check duplex " - "setting.\n", dev->name); - } - } - - /* kill the packet */ - SMC_WAIT_MMU_BUSY(lp); - SMC_SET_MMU_CMD(lp, MC_FREEPKT); - - /* Don't restore Packet Number Reg until busy bit is cleared */ - SMC_WAIT_MMU_BUSY(lp); - SMC_SET_PN(lp, saved_packet); - - /* re-enable transmit */ - SMC_SELECT_BANK(lp, 0); - SMC_SET_TCR(lp, lp->tcr_cur_mode); - SMC_SELECT_BANK(lp, 2); -} - - -/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ - -static void smc_mii_out(struct net_device *dev, unsigned int val, int bits) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int mii_reg, mask; - - mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO); - mii_reg |= MII_MDOE; - - for (mask = 1 << (bits - 1); mask; mask >>= 1) { - if (val & mask) - mii_reg |= MII_MDO; - else - mii_reg &= ~MII_MDO; - - SMC_SET_MII(lp, mii_reg); - udelay(MII_DELAY); - SMC_SET_MII(lp, mii_reg | MII_MCLK); - udelay(MII_DELAY); - } -} - -static unsigned int smc_mii_in(struct net_device *dev, int bits) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int mii_reg, mask, val; - - mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO); - SMC_SET_MII(lp, mii_reg); - - for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) { - if (SMC_GET_MII(lp) & MII_MDI) - val |= mask; - - SMC_SET_MII(lp, mii_reg); - udelay(MII_DELAY); - SMC_SET_MII(lp, mii_reg | MII_MCLK); - udelay(MII_DELAY); - } - - return val; -} - -/* - * Reads a register from the MII Management serial interface - */ -static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int phydata; - - SMC_SELECT_BANK(lp, 3); - - /* Idle - 32 ones */ - smc_mii_out(dev, 0xffffffff, 32); - - /* Start code (01) + read (10) + phyaddr + phyreg */ - smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14); - - /* Turnaround (2bits) + phydata */ - phydata = smc_mii_in(dev, 18); - - /* Return to idle state */ - SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO)); - - DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", - __func__, phyaddr, phyreg, phydata); - - SMC_SELECT_BANK(lp, 2); - return phydata; -} - -/* - * Writes a register to the MII Management serial interface - */ -static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg, - int phydata) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - - SMC_SELECT_BANK(lp, 3); - - /* Idle - 32 ones */ - smc_mii_out(dev, 0xffffffff, 32); - - /* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */ - smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32); - - /* Return to idle state */ - SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO)); - - DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n", - __func__, phyaddr, phyreg, phydata); - - SMC_SELECT_BANK(lp, 2); -} - -/* - * Finds and reports the PHY address - */ -static void smc_phy_detect(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - int phyaddr; - - DBG(2, "%s: %s\n", dev->name, __func__); - - lp->phy_type = 0; - - /* - * Scan all 32 PHY addresses if necessary, starting at - * PHY#1 to PHY#31, and then PHY#0 last. - */ - for (phyaddr = 1; phyaddr < 33; ++phyaddr) { - unsigned int id1, id2; - - /* Read the PHY identifiers */ - id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1); - id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2); - - DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n", - dev->name, id1, 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; - } - } -} - -/* - * Sets the PHY to a configuration as determined by the user - */ -static int smc_phy_fixed(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - int phyaddr = lp->mii.phy_id; - int bmcr, cfg1; - - DBG(3, "%s: %s\n", dev->name, __func__); - - /* Enter Link Disable state */ - cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG); - cfg1 |= PHY_CFG1_LNKDIS; - smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1); - - /* - * Set our fixed capabilities - * Disable auto-negotiation - */ - bmcr = 0; - - if (lp->ctl_rfduplx) - bmcr |= BMCR_FULLDPLX; - - if (lp->ctl_rspeed == 100) - bmcr |= BMCR_SPEED100; - - /* Write our capabilities to the phy control register */ - smc_phy_write(dev, phyaddr, MII_BMCR, bmcr); - - /* Re-Configure the Receive/Phy Control register */ - SMC_SELECT_BANK(lp, 0); - SMC_SET_RPC(lp, lp->rpc_cur_mode); - SMC_SELECT_BANK(lp, 2); - - return 1; -} - -/* - * smc_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. - * - * Must be called with lp->lock locked. - */ -static int smc_phy_reset(struct net_device *dev, int phy) -{ - struct smc_local *lp = netdev_priv(dev); - unsigned int bmcr; - int timeout; - - smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET); - - for (timeout = 2; timeout; timeout--) { - spin_unlock_irq(&lp->lock); - msleep(50); - spin_lock_irq(&lp->lock); - - bmcr = smc_phy_read(dev, phy, MII_BMCR); - if (!(bmcr & BMCR_RESET)) - break; - } - - return bmcr & BMCR_RESET; -} - -/* - * smc_phy_powerdown - powerdown phy - * @dev: net device - * - * Power down the specified PHY - */ -static void smc_phy_powerdown(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - unsigned int bmcr; - int phy = lp->mii.phy_id; - - if (lp->phy_type == 0) - return; - - /* We need to ensure that no calls to smc_phy_configure are - pending. - */ - cancel_work_sync(&lp->phy_configure); - - bmcr = smc_phy_read(dev, phy, MII_BMCR); - smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN); -} - -/* - * smc_phy_check_media - check the media status and adjust TCR - * @dev: net device - * @init: set true for initialisation - * - * Select duplex mode depending on negotiation state. This - * also updates our carrier state. - */ -static void smc_phy_check_media(struct net_device *dev, int init) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - - if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) { - /* duplex state has changed */ - if (lp->mii.full_duplex) { - lp->tcr_cur_mode |= TCR_SWFDUP; - } else { - lp->tcr_cur_mode &= ~TCR_SWFDUP; - } - - SMC_SELECT_BANK(lp, 0); - SMC_SET_TCR(lp, lp->tcr_cur_mode); - } -} - -/* - * Configures the specified PHY through the MII management interface - * using Autonegotiation. - * Calls smc_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 smc_phy_configure(struct work_struct *work) -{ - struct smc_local *lp = - container_of(work, struct smc_local, phy_configure); - struct net_device *dev = lp->dev; - void __iomem *ioaddr = lp->base; - int phyaddr = lp->mii.phy_id; - int my_phy_caps; /* My PHY capabilities */ - int my_ad_caps; /* My Advertised capabilities */ - int status; - - DBG(3, "%s:smc_program_phy()\n", dev->name); - - spin_lock_irq(&lp->lock); - - /* - * We should not be called if phy_type is zero. - */ - if (lp->phy_type == 0) - goto smc_phy_configure_exit; - - if (smc_phy_reset(dev, phyaddr)) { - printk("%s: PHY reset timed out\n", dev->name); - goto smc_phy_configure_exit; - } - - /* - * Enable PHY Interrupts (for register 18) - * Interrupts listed here are disabled - */ - smc_phy_write(dev, phyaddr, PHY_MASK_REG, - PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD | - PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB | - PHY_INT_SPDDET | PHY_INT_DPLXDET); - - /* Configure the Receive/Phy Control register */ - SMC_SELECT_BANK(lp, 0); - SMC_SET_RPC(lp, lp->rpc_cur_mode); - - /* If the user requested no auto neg, then go set his request */ - if (lp->mii.force_media) { - smc_phy_fixed(dev); - goto smc_phy_configure_exit; - } - - /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */ - my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR); - - if (!(my_phy_caps & BMSR_ANEGCAPABLE)) { - printk(KERN_INFO "Auto negotiation NOT supported\n"); - smc_phy_fixed(dev); - goto smc_phy_configure_exit; - } - - my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */ - - 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_phy_write(dev, phyaddr, MII_ADVERTISE, 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. - */ - status = smc_phy_read(dev, phyaddr, MII_ADVERTISE); - - DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps); - DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps); - - /* Restart auto-negotiation process in order to advertise my caps */ - smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART); - - smc_phy_check_media(dev, 1); - -smc_phy_configure_exit: - SMC_SELECT_BANK(lp, 2); - spin_unlock_irq(&lp->lock); -} - -/* - * smc_phy_interrupt - * - * Purpose: Handle interrupts relating to PHY register 18. This is - * called from the "hard" interrupt handler under our private spinlock. - */ -static void smc_phy_interrupt(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - int phyaddr = lp->mii.phy_id; - int phy18; - - DBG(2, "%s: %s\n", dev->name, __func__); - - if (lp->phy_type == 0) - return; - - for(;;) { - smc_phy_check_media(dev, 0); - - /* Read PHY Register 18, Status Output */ - phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG); - if ((phy18 & PHY_INT_INT) == 0) - break; - } -} - -/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/ - -static void smc_10bt_check_media(struct net_device *dev, int init) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int old_carrier, new_carrier; - - old_carrier = netif_carrier_ok(dev) ? 1 : 0; - - SMC_SELECT_BANK(lp, 0); - new_carrier = (SMC_GET_EPH_STATUS(lp) & ES_LINK_OK) ? 1 : 0; - SMC_SELECT_BANK(lp, 2); - - if (init || (old_carrier != new_carrier)) { - if (!new_carrier) { - netif_carrier_off(dev); - } else { - netif_carrier_on(dev); - } - if (netif_msg_link(lp)) - printk(KERN_INFO "%s: link %s\n", dev->name, - new_carrier ? "up" : "down"); - } -} - -static void smc_eph_interrupt(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned int ctl; - - smc_10bt_check_media(dev, 0); - - SMC_SELECT_BANK(lp, 1); - ctl = SMC_GET_CTL(lp); - SMC_SET_CTL(lp, ctl & ~CTL_LE_ENABLE); - SMC_SET_CTL(lp, ctl); - SMC_SELECT_BANK(lp, 2); -} - -/* - * This is the main routine of the driver, to handle the device when - * it needs some attention. - */ -static irqreturn_t smc_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - int status, mask, timeout, card_stats; - int saved_pointer; - - DBG(3, "%s: %s\n", dev->name, __func__); - - spin_lock(&lp->lock); - - /* A preamble may be used when there is a potential race - * between the interruptible transmit functions and this - * ISR. */ - SMC_INTERRUPT_PREAMBLE; - - saved_pointer = SMC_GET_PTR(lp); - mask = SMC_GET_INT_MASK(lp); - SMC_SET_INT_MASK(lp, 0); - - /* set a timeout value, so I don't stay here forever */ - timeout = MAX_IRQ_LOOPS; - - do { - status = SMC_GET_INT(lp); - - DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n", - dev->name, status, mask, - ({ int meminfo; SMC_SELECT_BANK(lp, 0); - meminfo = SMC_GET_MIR(lp); - SMC_SELECT_BANK(lp, 2); meminfo; }), - SMC_GET_FIFO(lp)); - - status &= mask; - if (!status) - break; - - if (status & IM_TX_INT) { - /* do this before RX as it will free memory quickly */ - DBG(3, "%s: TX int\n", dev->name); - smc_tx(dev); - SMC_ACK_INT(lp, IM_TX_INT); - if (THROTTLE_TX_PKTS) - netif_wake_queue(dev); - } else if (status & IM_RCV_INT) { - DBG(3, "%s: RX irq\n", dev->name); - smc_rcv(dev); - } else if (status & IM_ALLOC_INT) { - DBG(3, "%s: Allocation irq\n", dev->name); - tasklet_hi_schedule(&lp->tx_task); - mask &= ~IM_ALLOC_INT; - } else if (status & IM_TX_EMPTY_INT) { - DBG(3, "%s: TX empty\n", dev->name); - mask &= ~IM_TX_EMPTY_INT; - - /* update stats */ - SMC_SELECT_BANK(lp, 0); - card_stats = SMC_GET_COUNTER(lp); - SMC_SELECT_BANK(lp, 2); - - /* single collisions */ - dev->stats.collisions += card_stats & 0xF; - card_stats >>= 4; - - /* multiple collisions */ - dev->stats.collisions += card_stats & 0xF; - } else if (status & IM_RX_OVRN_INT) { - DBG(1, "%s: RX overrun (EPH_ST 0x%04x)\n", dev->name, - ({ int eph_st; SMC_SELECT_BANK(lp, 0); - eph_st = SMC_GET_EPH_STATUS(lp); - SMC_SELECT_BANK(lp, 2); eph_st; })); - SMC_ACK_INT(lp, IM_RX_OVRN_INT); - dev->stats.rx_errors++; - dev->stats.rx_fifo_errors++; - } else if (status & IM_EPH_INT) { - smc_eph_interrupt(dev); - } else if (status & IM_MDINT) { - SMC_ACK_INT(lp, IM_MDINT); - smc_phy_interrupt(dev); - } else if (status & IM_ERCV_INT) { - SMC_ACK_INT(lp, IM_ERCV_INT); - PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT\n", dev->name); - } - } while (--timeout); - - /* restore register states */ - SMC_SET_PTR(lp, saved_pointer); - SMC_SET_INT_MASK(lp, mask); - spin_unlock(&lp->lock); - -#ifndef CONFIG_NET_POLL_CONTROLLER - if (timeout == MAX_IRQ_LOOPS) - PRINTK("%s: spurious interrupt (mask = 0x%02x)\n", - dev->name, mask); -#endif - DBG(3, "%s: Interrupt done (%d loops)\n", - dev->name, MAX_IRQ_LOOPS - timeout); - - /* - * We return IRQ_HANDLED unconditionally here even if there was - * nothing to do. There is a possibility that a packet might - * get enqueued into the chip right after TX_EMPTY_INT is raised - * but just before the CPU acknowledges the IRQ. - * Better take an unneeded IRQ in some occasions than complexifying - * the code for all cases. - */ - return IRQ_HANDLED; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -/* - * Polling receive - used by netconsole and other diagnostic tools - * to allow network i/o with interrupts disabled. - */ -static void smc_poll_controller(struct net_device *dev) -{ - disable_irq(dev->irq); - smc_interrupt(dev->irq, dev); - enable_irq(dev->irq); -} -#endif - -/* Our watchdog timed out. Called by the networking layer */ -static void smc_timeout(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - int status, mask, eph_st, meminfo, fifo; - - DBG(2, "%s: %s\n", dev->name, __func__); - - spin_lock_irq(&lp->lock); - status = SMC_GET_INT(lp); - mask = SMC_GET_INT_MASK(lp); - fifo = SMC_GET_FIFO(lp); - SMC_SELECT_BANK(lp, 0); - eph_st = SMC_GET_EPH_STATUS(lp); - meminfo = SMC_GET_MIR(lp); - SMC_SELECT_BANK(lp, 2); - spin_unlock_irq(&lp->lock); - PRINTK( "%s: TX timeout (INT 0x%02x INTMASK 0x%02x " - "MEM 0x%04x FIFO 0x%04x EPH_ST 0x%04x)\n", - dev->name, status, mask, meminfo, fifo, eph_st ); - - smc_reset(dev); - smc_enable(dev); - - /* - * Reconfiguring the PHY doesn't seem like a bad idea here, but - * smc_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 */ - dev->trans_start = jiffies; /* 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 smc_set_multicast_list(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - unsigned char multicast_table[8]; - int update_multicast = 0; - - DBG(2, "%s: %s\n", dev->name, __func__); - - if (dev->flags & IFF_PROMISC) { - DBG(2, "%s: RCR_PRMS\n", dev->name); - lp->rcr_cur_mode |= RCR_PRMS; - } - -/* BUG? I never disable promiscuous mode if multicasting was turned on. - Now, I turn off promiscuous mode, but I don't do anything to multicasting - when promiscuous mode is turned on. -*/ - - /* - * 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(2, "%s: RCR_ALMUL\n", dev->name); - lp->rcr_cur_mode |= RCR_ALMUL; - } - - /* - * 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 3 bits are - * the number of the 8 bit register, while the low 3 bits are the bit - * within that register. - */ - else if (!netdev_mc_empty(dev)) { - struct netdev_hw_addr *ha; - - /* table for flipping the order of 3 bits */ - static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7}; - - /* start with a table of all zeros: reject all */ - memset(multicast_table, 0, sizeof(multicast_table)); - - netdev_for_each_mc_addr(ha, dev) { - int position; - - /* only use the low order bits */ - position = crc32_le(~0, ha->addr, 6) & 0x3f; - - /* do some messy swapping to put the bit in the right spot */ - multicast_table[invert3[position&7]] |= - (1<<invert3[(position>>3)&7]); - } - - /* be sure I get rid of flags I might have set */ - lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); - - /* now, the table can be loaded into the chipset */ - update_multicast = 1; - } else { - DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name); - lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL); - - /* - * 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_irq(&lp->lock); - SMC_SELECT_BANK(lp, 0); - SMC_SET_RCR(lp, lp->rcr_cur_mode); - if (update_multicast) { - SMC_SELECT_BANK(lp, 3); - SMC_SET_MCAST(lp, multicast_table); - } - SMC_SELECT_BANK(lp, 2); - spin_unlock_irq(&lp->lock); -} - - -/* - * Open and Initialize the board - * - * Set up everything, reset the card, etc.. - */ -static int -smc_open(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - - DBG(2, "%s: %s\n", dev->name, __func__); - - /* - * Check that the address is valid. If its not, refuse - * to bring the device up. The user must specify an - * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx - */ - if (!is_valid_ether_addr(dev->dev_addr)) { - PRINTK("%s: no valid ethernet hw addr\n", __func__); - return -EINVAL; - } - - /* Setup the default Register Modes */ - lp->tcr_cur_mode = TCR_DEFAULT; - lp->rcr_cur_mode = RCR_DEFAULT; - lp->rpc_cur_mode = RPC_DEFAULT | - lp->cfg.leda << RPC_LSXA_SHFT | - lp->cfg.ledb << RPC_LSXB_SHFT; - - /* - * If we are not using a MII interface, we need to - * monitor our own carrier signal to detect faults. - */ - if (lp->phy_type == 0) - lp->tcr_cur_mode |= TCR_MON_CSN; - - /* reset the hardware */ - smc_reset(dev); - smc_enable(dev); - - /* Configure the PHY, initialize the link state */ - if (lp->phy_type != 0) - smc_phy_configure(&lp->phy_configure); - else { - spin_lock_irq(&lp->lock); - smc_10bt_check_media(dev, 1); - spin_unlock_irq(&lp->lock); - } - - netif_start_queue(dev); - return 0; -} - -/* - * smc_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 smc_close(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - - DBG(2, "%s: %s\n", dev->name, __func__); - - netif_stop_queue(dev); - netif_carrier_off(dev); - - /* clear everything */ - smc_shutdown(dev); - tasklet_kill(&lp->tx_task); - smc_phy_powerdown(dev); - return 0; -} - -/* - * Ethtool support - */ -static int -smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct smc_local *lp = netdev_priv(dev); - int ret; - - cmd->maxtxpkt = 1; - cmd->maxrxpkt = 1; - - if (lp->phy_type != 0) { - spin_lock_irq(&lp->lock); - ret = mii_ethtool_gset(&lp->mii, cmd); - spin_unlock_irq(&lp->lock); - } else { - cmd->supported = SUPPORTED_10baseT_Half | - SUPPORTED_10baseT_Full | - SUPPORTED_TP | SUPPORTED_AUI; - - if (lp->ctl_rspeed == 10) - ethtool_cmd_speed_set(cmd, SPEED_10); - else if (lp->ctl_rspeed == 100) - ethtool_cmd_speed_set(cmd, SPEED_100); - - cmd->autoneg = AUTONEG_DISABLE; - cmd->transceiver = XCVR_INTERNAL; - cmd->port = 0; - cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF; - - ret = 0; - } - - return ret; -} - -static int -smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct smc_local *lp = netdev_priv(dev); - int ret; - - if (lp->phy_type != 0) { - spin_lock_irq(&lp->lock); - ret = mii_ethtool_sset(&lp->mii, cmd); - spin_unlock_irq(&lp->lock); - } else { - if (cmd->autoneg != AUTONEG_DISABLE || - cmd->speed != SPEED_10 || - (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) || - (cmd->port != PORT_TP && cmd->port != PORT_AUI)) - return -EINVAL; - -// lp->port = cmd->port; - lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL; - -// if (netif_running(dev)) -// smc_set_port(dev); - - ret = 0; - } - - return ret; -} - -static void -smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info) -{ - strncpy(info->driver, CARDNAME, sizeof(info->driver)); - strncpy(info->version, version, sizeof(info->version)); - strncpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info)); -} - -static int smc_ethtool_nwayreset(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - int ret = -EINVAL; - - if (lp->phy_type != 0) { - spin_lock_irq(&lp->lock); - ret = mii_nway_restart(&lp->mii); - spin_unlock_irq(&lp->lock); - } - - return ret; -} - -static u32 smc_ethtool_getmsglevel(struct net_device *dev) -{ - struct smc_local *lp = netdev_priv(dev); - return lp->msg_enable; -} - -static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level) -{ - struct smc_local *lp = netdev_priv(dev); - lp->msg_enable = level; -} - -static int smc_write_eeprom_word(struct net_device *dev, u16 addr, u16 word) -{ - u16 ctl; - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - - spin_lock_irq(&lp->lock); - /* load word into GP register */ - SMC_SELECT_BANK(lp, 1); - SMC_SET_GP(lp, word); - /* set the address to put the data in EEPROM */ - SMC_SELECT_BANK(lp, 2); - SMC_SET_PTR(lp, addr); - /* tell it to write */ - SMC_SELECT_BANK(lp, 1); - ctl = SMC_GET_CTL(lp); - SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_STORE)); - /* wait for it to finish */ - do { - udelay(1); - } while (SMC_GET_CTL(lp) & CTL_STORE); - /* clean up */ - SMC_SET_CTL(lp, ctl); - SMC_SELECT_BANK(lp, 2); - spin_unlock_irq(&lp->lock); - return 0; -} - -static int smc_read_eeprom_word(struct net_device *dev, u16 addr, u16 *word) -{ - u16 ctl; - struct smc_local *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - - spin_lock_irq(&lp->lock); - /* set the EEPROM address to get the data from */ - SMC_SELECT_BANK(lp, 2); - SMC_SET_PTR(lp, addr | PTR_READ); - /* tell it to load */ - SMC_SELECT_BANK(lp, 1); - SMC_SET_GP(lp, 0xffff); /* init to known */ - ctl = SMC_GET_CTL(lp); - SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_RELOAD)); - /* wait for it to finish */ - do { - udelay(1); - } while (SMC_GET_CTL(lp) & CTL_RELOAD); - /* read word from GP register */ - *word = SMC_GET_GP(lp); - /* clean up */ - SMC_SET_CTL(lp, ctl); - SMC_SELECT_BANK(lp, 2); - spin_unlock_irq(&lp->lock); - return 0; -} - -static int smc_ethtool_geteeprom_len(struct net_device *dev) -{ - return 0x23 * 2; -} - -static int smc_ethtool_geteeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - int i; - int imax; - - DBG(1, "Reading %d bytes at %d(0x%x)\n", - eeprom->len, eeprom->offset, eeprom->offset); - imax = smc_ethtool_geteeprom_len(dev); - for (i = 0; i < eeprom->len; i += 2) { - int ret; - u16 wbuf; - int offset = i + eeprom->offset; - if (offset > imax) - break; - ret = smc_read_eeprom_word(dev, offset >> 1, &wbuf); - if (ret != 0) - return ret; - DBG(2, "Read 0x%x from 0x%x\n", wbuf, offset >> 1); - data[i] = (wbuf >> 8) & 0xff; - data[i+1] = wbuf & 0xff; - } - return 0; -} - -static int smc_ethtool_seteeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - int i; - int imax; - - DBG(1, "Writing %d bytes to %d(0x%x)\n", - eeprom->len, eeprom->offset, eeprom->offset); - imax = smc_ethtool_geteeprom_len(dev); - for (i = 0; i < eeprom->len; i += 2) { - int ret; - u16 wbuf; - int offset = i + eeprom->offset; - if (offset > imax) - break; - wbuf = (data[i] << 8) | data[i + 1]; - DBG(2, "Writing 0x%x to 0x%x\n", wbuf, offset >> 1); - ret = smc_write_eeprom_word(dev, offset >> 1, wbuf); - if (ret != 0) - return ret; - } - return 0; -} - - -static const struct ethtool_ops smc_ethtool_ops = { - .get_settings = smc_ethtool_getsettings, - .set_settings = smc_ethtool_setsettings, - .get_drvinfo = smc_ethtool_getdrvinfo, - - .get_msglevel = smc_ethtool_getmsglevel, - .set_msglevel = smc_ethtool_setmsglevel, - .nway_reset = smc_ethtool_nwayreset, - .get_link = ethtool_op_get_link, - .get_eeprom_len = smc_ethtool_geteeprom_len, - .get_eeprom = smc_ethtool_geteeprom, - .set_eeprom = smc_ethtool_seteeprom, -}; - -static const struct net_device_ops smc_netdev_ops = { - .ndo_open = smc_open, - .ndo_stop = smc_close, - .ndo_start_xmit = smc_hard_start_xmit, - .ndo_tx_timeout = smc_timeout, - .ndo_set_multicast_list = smc_set_multicast_list, - .ndo_change_mtu = eth_change_mtu, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = smc_poll_controller, -#endif -}; - -/* - * smc_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, - */ -/* - * does this still work? - * - * I just deleted auto_irq.c, since it was never built... - * --jgarzik - */ -static int __devinit smc_findirq(struct smc_local *lp) -{ - void __iomem *ioaddr = lp->base; - int timeout = 20; - unsigned long cookie; - - DBG(2, "%s: %s\n", CARDNAME, __func__); - - cookie = probe_irq_on(); - - /* - * What I try to do here is trigger an ALLOC_INT. This is done - * by allocating a small chunk of memory, which will give an interrupt - * when done. - */ - /* enable ALLOCation interrupts ONLY */ - SMC_SELECT_BANK(lp, 2); - SMC_SET_INT_MASK(lp, IM_ALLOC_INT); - - /* - * Allocate 512 bytes of memory. Note that the chip was just - * reset so all the memory is available - */ - SMC_SET_MMU_CMD(lp, MC_ALLOC | 1); - - /* - * Wait until positive that the interrupt has been generated - */ - do { - int int_status; - udelay(10); - int_status = SMC_GET_INT(lp); - if (int_status & IM_ALLOC_INT) - 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_MASK(lp, 0); - - /* and return what I found */ - return probe_irq_off(cookie); -} - -/* - * Function: smc_probe(unsigned long ioaddr) - * - * Purpose: - * Tests to see if a given ioaddr points to an SMC91x chip. - * Returns a 0 on success - * - * Algorithm: - * (1) see if the high byte of BANK_SELECT is 0x33 - * (2) compare the ioaddr with the base register's address - * (3) 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 __devinit smc_probe(struct net_device *dev, void __iomem *ioaddr, - unsigned long irq_flags) -{ - struct smc_local *lp = netdev_priv(dev); - static int version_printed = 0; - int retval; - unsigned int val, revision_register; - const char *version_string; - - DBG(2, "%s: %s\n", CARDNAME, __func__); - - /* First, see if the high byte is 0x33 */ - val = SMC_CURRENT_BANK(lp); - DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val); - if ((val & 0xFF00) != 0x3300) { - if ((val & 0xFF) == 0x33) { - printk(KERN_WARNING - "%s: Detected possible byte-swapped interface" - " at IOADDR %p\n", CARDNAME, ioaddr); - } - retval = -ENODEV; - goto err_out; - } - - /* - * The above MIGHT indicate a device, but I need to write to - * further test this. - */ - SMC_SELECT_BANK(lp, 0); - val = SMC_CURRENT_BANK(lp); - if ((val & 0xFF00) != 0x3300) { - retval = -ENODEV; - goto err_out; - } - - /* - * well, we've already written once, so hopefully another - * time won't hurt. This time, I need to switch the bank - * register to bank 1, so I can access the base address - * register - */ - SMC_SELECT_BANK(lp, 1); - val = SMC_GET_BASE(lp); - val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT; - if (((unsigned int)ioaddr & (0x3e0 << SMC_IO_SHIFT)) != val) { - printk("%s: IOADDR %p doesn't match configuration (%x).\n", - CARDNAME, ioaddr, val); - } - - /* - * check if the revision register is something that I - * recognize. These might need to be added to later, - * as future revisions could be added. - */ - SMC_SELECT_BANK(lp, 3); - revision_register = SMC_GET_REV(lp); - DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register); - version_string = chip_ids[ (revision_register >> 4) & 0xF]; - if (!version_string || (revision_register & 0xff00) != 0x3300) { - /* I don't recognize this chip, so... */ - printk("%s: IO %p: Unrecognized revision register 0x%04x" - ", Contact author.\n", CARDNAME, - ioaddr, revision_register); - - retval = -ENODEV; - goto err_out; - } - - /* At this point I'll assume that the chip is an SMC91x. */ - if (version_printed++ == 0) - printk("%s", version); - - /* fill in some of the fields */ - dev->base_addr = (unsigned long)ioaddr; - lp->base = ioaddr; - lp->version = revision_register & 0xff; - spin_lock_init(&lp->lock); - - /* Get the MAC address */ - SMC_SELECT_BANK(lp, 1); - SMC_GET_MAC_ADDR(lp, dev->dev_addr); - - /* now, reset the chip, and put it into a known state */ - smc_reset(dev); - - /* - * If dev->irq is 0, then the device has to be banged on to see - * what the IRQ is. - * - * This banging doesn't always detect the IRQ, for unknown reasons. - * a workaround is to reset the chip and try again. - * - * Interestingly, the DOS packet driver *SETS* the IRQ on the card to - * be what is requested on the command line. I don't do that, mostly - * because the card that I have uses a non-standard method of accessing - * the IRQs, and because this _should_ work in most configurations. - * - * 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 = smc_findirq(lp); - if (dev->irq) - break; - /* kick the card and try again */ - smc_reset(dev); - } - } - if (dev->irq == 0) { - printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n", - dev->name); - retval = -ENODEV; - goto err_out; - } - dev->irq = irq_canonicalize(dev->irq); - - /* Fill in the fields of the device structure with ethernet values. */ - ether_setup(dev); - - dev->watchdog_timeo = msecs_to_jiffies(watchdog); - dev->netdev_ops = &smc_netdev_ops; - dev->ethtool_ops = &smc_ethtool_ops; - - tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev); - INIT_WORK(&lp->phy_configure, smc_phy_configure); - lp->dev = dev; - 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 = smc_phy_read; - lp->mii.mdio_write = smc_phy_write; - - /* - * Locate the phy, if any. - */ - if (lp->version >= (CHIP_91100 << 4)) - smc_phy_detect(dev); - - /* then shut everything down to save power */ - smc_shutdown(dev); - smc_phy_powerdown(dev); - - /* Set default parameters */ - lp->msg_enable = NETIF_MSG_LINK; - lp->ctl_rfduplx = 0; - lp->ctl_rspeed = 10; - - if (lp->version >= (CHIP_91100 << 4)) { - lp->ctl_rfduplx = 1; - lp->ctl_rspeed = 100; - } - - /* Grab the IRQ */ - retval = request_irq(dev->irq, smc_interrupt, irq_flags, dev->name, dev); - if (retval) - goto err_out; - -#ifdef CONFIG_ARCH_PXA -# ifdef SMC_USE_PXA_DMA - lp->cfg.flags |= SMC91X_USE_DMA; -# endif - if (lp->cfg.flags & SMC91X_USE_DMA) { - int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW, - smc_pxa_dma_irq, NULL); - if (dma >= 0) - dev->dma = dma; - } -#endif - - retval = register_netdev(dev); - if (retval == 0) { - /* now, print out the card info, in a short format.. */ - printk("%s: %s (rev %d) at %p IRQ %d", - dev->name, version_string, revision_register & 0x0f, - lp->base, dev->irq); - - if (dev->dma != (unsigned char)-1) - printk(" DMA %d", dev->dma); - - printk("%s%s\n", - lp->cfg.flags & SMC91X_NOWAIT ? " [nowait]" : "", - THROTTLE_TX_PKTS ? " [throttle_tx]" : ""); - - if (!is_valid_ether_addr(dev->dev_addr)) { - printk("%s: Invalid ethernet MAC address. Please " - "set using ifconfig\n", dev->name); - } else { - /* Print the Ethernet address */ - printk("%s: Ethernet addr: %pM\n", - dev->name, dev->dev_addr); - } - - if (lp->phy_type == 0) { - PRINTK("%s: No PHY found\n", dev->name); - } else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) { - PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name); - } else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) { - PRINTK("%s: PHY LAN83C180\n", dev->name); - } - } - -err_out: -#ifdef CONFIG_ARCH_PXA - if (retval && dev->dma != (unsigned char)-1) - pxa_free_dma(dev->dma); -#endif - return retval; -} - -static int smc_enable_device(struct platform_device *pdev) -{ - struct net_device *ndev = platform_get_drvdata(pdev); - struct smc_local *lp = netdev_priv(ndev); - unsigned long flags; - unsigned char ecor, ecsr; - void __iomem *addr; - struct resource * res; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); - if (!res) - return 0; - - /* - * Map the attribute space. This is overkill, but clean. - */ - addr = ioremap(res->start, ATTRIB_SIZE); - if (!addr) - return -ENOMEM; - - /* - * Reset the device. We must disable IRQs around this - * since a reset causes the IRQ line become active. - */ - local_irq_save(flags); - ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET; - writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT)); - readb(addr + (ECOR << SMC_IO_SHIFT)); - - /* - * Wait 100us for the chip to reset. - */ - udelay(100); - - /* - * The device will ignore all writes to the enable bit while - * reset is asserted, even if the reset bit is cleared in the - * same write. Must clear reset first, then enable the device. - */ - writeb(ecor, addr + (ECOR << SMC_IO_SHIFT)); - writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT)); - - /* - * Set the appropriate byte/word mode. - */ - ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8; - if (!SMC_16BIT(lp)) - ecsr |= ECSR_IOIS8; - writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT)); - local_irq_restore(flags); - - iounmap(addr); - - /* - * Wait for the chip to wake up. We could poll the control - * register in the main register space, but that isn't mapped - * yet. We know this is going to take 750us. - */ - msleep(1); - - return 0; -} - -static int smc_request_attrib(struct platform_device *pdev, - struct net_device *ndev) -{ - struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); - struct smc_local *lp __maybe_unused = netdev_priv(ndev); - - if (!res) - return 0; - - if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME)) - return -EBUSY; - - return 0; -} - -static void smc_release_attrib(struct platform_device *pdev, - struct net_device *ndev) -{ - struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib"); - struct smc_local *lp __maybe_unused = netdev_priv(ndev); - - if (res) - release_mem_region(res->start, ATTRIB_SIZE); -} - -static inline void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev) -{ - if (SMC_CAN_USE_DATACS) { - struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); - struct smc_local *lp = netdev_priv(ndev); - - if (!res) - return; - - if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) { - printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME); - return; - } - - lp->datacs = ioremap(res->start, SMC_DATA_EXTENT); - } -} - -static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev) -{ - if (SMC_CAN_USE_DATACS) { - struct smc_local *lp = netdev_priv(ndev); - struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32"); - - if (lp->datacs) - iounmap(lp->datacs); - - lp->datacs = NULL; - - if (res) - release_mem_region(res->start, SMC_DATA_EXTENT); - } -} - -/* - * smc_init(void) - * Input parameters: - * dev->base_addr == 0, try to find all possible locations - * dev->base_addr > 0x1ff, this is the address to check - * dev->base_addr == <anything else>, return failure code - * - * Output: - * 0 --> there is a device - * anything else, error - */ -static int __devinit smc_drv_probe(struct platform_device *pdev) -{ - struct smc91x_platdata *pd = pdev->dev.platform_data; - struct smc_local *lp; - struct net_device *ndev; - struct resource *res, *ires; - unsigned int __iomem *addr; - unsigned long irq_flags = SMC_IRQ_FLAGS; - int ret; - - ndev = alloc_etherdev(sizeof(struct smc_local)); - if (!ndev) { - printk("%s: could not allocate device.\n", CARDNAME); - ret = -ENOMEM; - goto out; - } - SET_NETDEV_DEV(ndev, &pdev->dev); - - /* get configuration from platform data, only allow use of - * bus width if both SMC_CAN_USE_xxx and SMC91X_USE_xxx are set. - */ - - lp = netdev_priv(ndev); - - if (pd) { - memcpy(&lp->cfg, pd, sizeof(lp->cfg)); - lp->io_shift = SMC91X_IO_SHIFT(lp->cfg.flags); - } else { - lp->cfg.flags |= (SMC_CAN_USE_8BIT) ? SMC91X_USE_8BIT : 0; - lp->cfg.flags |= (SMC_CAN_USE_16BIT) ? SMC91X_USE_16BIT : 0; - lp->cfg.flags |= (SMC_CAN_USE_32BIT) ? SMC91X_USE_32BIT : 0; - lp->cfg.flags |= (nowait) ? SMC91X_NOWAIT : 0; - } - - if (!lp->cfg.leda && !lp->cfg.ledb) { - lp->cfg.leda = RPC_LSA_DEFAULT; - lp->cfg.ledb = RPC_LSB_DEFAULT; - } - - ndev->dma = (unsigned char)-1; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); - if (!res) - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - ret = -ENODEV; - goto out_free_netdev; - } - - - if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) { - ret = -EBUSY; - goto out_free_netdev; - } - - ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!ires) { - ret = -ENODEV; - goto out_release_io; - } - - ndev->irq = ires->start; - - if (irq_flags == -1 || ires->flags & IRQF_TRIGGER_MASK) - irq_flags = ires->flags & IRQF_TRIGGER_MASK; - - ret = smc_request_attrib(pdev, ndev); - if (ret) - goto out_release_io; -#if defined(CONFIG_SA1100_ASSABET) - NCR_0 |= NCR_ENET_OSC_EN; -#endif - platform_set_drvdata(pdev, ndev); - ret = smc_enable_device(pdev); - if (ret) - goto out_release_attrib; - - addr = ioremap(res->start, SMC_IO_EXTENT); - if (!addr) { - ret = -ENOMEM; - goto out_release_attrib; - } - -#ifdef CONFIG_ARCH_PXA - { - struct smc_local *lp = netdev_priv(ndev); - lp->device = &pdev->dev; - lp->physaddr = res->start; - } -#endif - - ret = smc_probe(ndev, addr, irq_flags); - if (ret != 0) - goto out_iounmap; - - smc_request_datacs(pdev, ndev); - - return 0; - - out_iounmap: - platform_set_drvdata(pdev, NULL); - iounmap(addr); - out_release_attrib: - smc_release_attrib(pdev, ndev); - out_release_io: - release_mem_region(res->start, SMC_IO_EXTENT); - out_free_netdev: - free_netdev(ndev); - out: - printk("%s: not found (%d).\n", CARDNAME, ret); - - return ret; -} - -static int __devexit smc_drv_remove(struct platform_device *pdev) -{ - struct net_device *ndev = platform_get_drvdata(pdev); - struct smc_local *lp = netdev_priv(ndev); - struct resource *res; - - platform_set_drvdata(pdev, NULL); - - unregister_netdev(ndev); - - free_irq(ndev->irq, ndev); - -#ifdef CONFIG_ARCH_PXA - if (ndev->dma != (unsigned char)-1) - pxa_free_dma(ndev->dma); -#endif - iounmap(lp->base); - - smc_release_datacs(pdev,ndev); - smc_release_attrib(pdev,ndev); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); - if (!res) - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, SMC_IO_EXTENT); - - free_netdev(ndev); - - return 0; -} - -static int smc_drv_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct net_device *ndev = platform_get_drvdata(pdev); - - if (ndev) { - if (netif_running(ndev)) { - netif_device_detach(ndev); - smc_shutdown(ndev); - smc_phy_powerdown(ndev); - } - } - return 0; -} - -static int smc_drv_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct net_device *ndev = platform_get_drvdata(pdev); - - if (ndev) { - struct smc_local *lp = netdev_priv(ndev); - smc_enable_device(pdev); - if (netif_running(ndev)) { - smc_reset(ndev); - smc_enable(ndev); - if (lp->phy_type != 0) - smc_phy_configure(&lp->phy_configure); - netif_device_attach(ndev); - } - } - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id smc91x_match[] = { - { .compatible = "smsc,lan91c94", }, - { .compatible = "smsc,lan91c111", }, - {}, -}; -MODULE_DEVICE_TABLE(of, smc91x_match); -#else -#define smc91x_match NULL -#endif - -static struct dev_pm_ops smc_drv_pm_ops = { - .suspend = smc_drv_suspend, - .resume = smc_drv_resume, -}; - -static struct platform_driver smc_driver = { - .probe = smc_drv_probe, - .remove = __devexit_p(smc_drv_remove), - .driver = { - .name = CARDNAME, - .owner = THIS_MODULE, - .pm = &smc_drv_pm_ops, - .of_match_table = smc91x_match, - }, -}; - -static int __init smc_init(void) -{ - return platform_driver_register(&smc_driver); -} - -static void __exit smc_cleanup(void) -{ - platform_driver_unregister(&smc_driver); -} - -module_init(smc_init); -module_exit(smc_cleanup); |