diff options
Diffstat (limited to 'drivers/net/ethernet/i825xx/82596.c')
| -rw-r--r-- | drivers/net/ethernet/i825xx/82596.c | 1632 |
1 files changed, 1632 insertions, 0 deletions
diff --git a/drivers/net/ethernet/i825xx/82596.c b/drivers/net/ethernet/i825xx/82596.c new file mode 100644 index 000000000000..be1f1970c842 --- /dev/null +++ b/drivers/net/ethernet/i825xx/82596.c @@ -0,0 +1,1632 @@ +/* 82596.c: A generic 82596 ethernet driver for linux. */ +/* + Based on Apricot.c + Written 1994 by Mark Evans. + This driver is for the Apricot 82596 bus-master interface + + Modularised 12/94 Mark Evans + + + Modified to support the 82596 ethernet chips on 680x0 VME boards. + by Richard Hirst <richard@sleepie.demon.co.uk> + Renamed to be 82596.c + + 980825: Changed to receive directly in to sk_buffs which are + allocated at open() time. Eliminates copy on incoming frames + (small ones are still copied). Shared data now held in a + non-cached page, so we can run on 68060 in copyback mode. + + TBD: + * look at deferring rx frames rather than discarding (as per tulip) + * handle tx ring full as per tulip + * performance test to tune rx_copybreak + + Most of my modifications relate to the braindead big-endian + implementation by Intel. When the i596 is operating in + 'big-endian' mode, it thinks a 32 bit value of 0x12345678 + should be stored as 0x56781234. This is a real pain, when + you have linked lists which are shared by the 680x0 and the + i596. + + Driver skeleton + Written 1993 by Donald Becker. + Copyright 1993 United States Government as represented by the Director, + National Security Agency. This software may only be used and distributed + according to the terms of the GNU General Public License as modified by SRC, + incorporated herein by reference. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403 + + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/init.h> +#include <linux/bitops.h> +#include <linux/gfp.h> + +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/pgtable.h> +#include <asm/cacheflush.h> + +static char version[] __initdata = + "82596.c $Revision: 1.5 $\n"; + +#define DRV_NAME "82596" + +/* DEBUG flags + */ + +#define DEB_INIT 0x0001 +#define DEB_PROBE 0x0002 +#define DEB_SERIOUS 0x0004 +#define DEB_ERRORS 0x0008 +#define DEB_MULTI 0x0010 +#define DEB_TDR 0x0020 +#define DEB_OPEN 0x0040 +#define DEB_RESET 0x0080 +#define DEB_ADDCMD 0x0100 +#define DEB_STATUS 0x0200 +#define DEB_STARTTX 0x0400 +#define DEB_RXADDR 0x0800 +#define DEB_TXADDR 0x1000 +#define DEB_RXFRAME 0x2000 +#define DEB_INTS 0x4000 +#define DEB_STRUCT 0x8000 +#define DEB_ANY 0xffff + + +#define DEB(x,y) if (i596_debug & (x)) y + + +#if defined(CONFIG_MVME16x_NET) || defined(CONFIG_MVME16x_NET_MODULE) +#define ENABLE_MVME16x_NET +#endif +#if defined(CONFIG_BVME6000_NET) || defined(CONFIG_BVME6000_NET_MODULE) +#define ENABLE_BVME6000_NET +#endif +#if defined(CONFIG_APRICOT) || defined(CONFIG_APRICOT_MODULE) +#define ENABLE_APRICOT +#endif + +#ifdef ENABLE_MVME16x_NET +#include <asm/mvme16xhw.h> +#endif +#ifdef ENABLE_BVME6000_NET +#include <asm/bvme6000hw.h> +#endif + +/* + * Define various macros for Channel Attention, word swapping etc., dependent + * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel. + */ + +#ifdef __mc68000__ +#define WSWAPrfd(x) ((struct i596_rfd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) +#define WSWAPrbd(x) ((struct i596_rbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) +#define WSWAPiscp(x) ((struct i596_iscp *)(((u32)(x)<<16) | ((((u32)(x)))>>16))) +#define WSWAPscb(x) ((struct i596_scb *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) +#define WSWAPcmd(x) ((struct i596_cmd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) +#define WSWAPtbd(x) ((struct i596_tbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) +#define WSWAPchar(x) ((char *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) +#define ISCP_BUSY 0x00010000 +#define MACH_IS_APRICOT 0 +#else +#define WSWAPrfd(x) ((struct i596_rfd *)((long)x)) +#define WSWAPrbd(x) ((struct i596_rbd *)((long)x)) +#define WSWAPiscp(x) ((struct i596_iscp *)((long)x)) +#define WSWAPscb(x) ((struct i596_scb *)((long)x)) +#define WSWAPcmd(x) ((struct i596_cmd *)((long)x)) +#define WSWAPtbd(x) ((struct i596_tbd *)((long)x)) +#define WSWAPchar(x) ((char *)((long)x)) +#define ISCP_BUSY 0x0001 +#define MACH_IS_APRICOT 1 +#endif + +/* + * The MPU_PORT command allows direct access to the 82596. With PORT access + * the following commands are available (p5-18). The 32-bit port command + * must be word-swapped with the most significant word written first. + * This only applies to VME boards. + */ +#define PORT_RESET 0x00 /* reset 82596 */ +#define PORT_SELFTEST 0x01 /* selftest */ +#define PORT_ALTSCP 0x02 /* alternate SCB address */ +#define PORT_ALTDUMP 0x03 /* Alternate DUMP address */ + +static int i596_debug = (DEB_SERIOUS|DEB_PROBE); + +MODULE_AUTHOR("Richard Hirst"); +MODULE_DESCRIPTION("i82596 driver"); +MODULE_LICENSE("GPL"); + +module_param(i596_debug, int, 0); +MODULE_PARM_DESC(i596_debug, "i82596 debug mask"); + + +/* Copy frames shorter than rx_copybreak, otherwise pass on up in + * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha). + */ +static int rx_copybreak = 100; + +#define PKT_BUF_SZ 1536 +#define MAX_MC_CNT 64 + +#define I596_TOTAL_SIZE 17 + +#define I596_NULL ((void *)0xffffffff) + +#define CMD_EOL 0x8000 /* The last command of the list, stop. */ +#define CMD_SUSP 0x4000 /* Suspend after doing cmd. */ +#define CMD_INTR 0x2000 /* Interrupt after doing cmd. */ + +#define CMD_FLEX 0x0008 /* Enable flexible memory model */ + +enum commands { + CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3, + CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7 +}; + +#define STAT_C 0x8000 /* Set to 0 after execution */ +#define STAT_B 0x4000 /* Command being executed */ +#define STAT_OK 0x2000 /* Command executed ok */ +#define STAT_A 0x1000 /* Command aborted */ + +#define CUC_START 0x0100 +#define CUC_RESUME 0x0200 +#define CUC_SUSPEND 0x0300 +#define CUC_ABORT 0x0400 +#define RX_START 0x0010 +#define RX_RESUME 0x0020 +#define RX_SUSPEND 0x0030 +#define RX_ABORT 0x0040 + +#define TX_TIMEOUT (HZ/20) + + +struct i596_reg { + unsigned short porthi; + unsigned short portlo; + unsigned long ca; +}; + +#define EOF 0x8000 +#define SIZE_MASK 0x3fff + +struct i596_tbd { + unsigned short size; + unsigned short pad; + struct i596_tbd *next; + char *data; +}; + +/* The command structure has two 'next' pointers; v_next is the address of + * the next command as seen by the CPU, b_next is the address of the next + * command as seen by the 82596. The b_next pointer, as used by the 82596 + * always references the status field of the next command, rather than the + * v_next field, because the 82596 is unaware of v_next. It may seem more + * logical to put v_next at the end of the structure, but we cannot do that + * because the 82596 expects other fields to be there, depending on command + * type. + */ + +struct i596_cmd { + struct i596_cmd *v_next; /* Address from CPUs viewpoint */ + unsigned short status; + unsigned short command; + struct i596_cmd *b_next; /* Address from i596 viewpoint */ +}; + +struct tx_cmd { + struct i596_cmd cmd; + struct i596_tbd *tbd; + unsigned short size; + unsigned short pad; + struct sk_buff *skb; /* So we can free it after tx */ +}; + +struct tdr_cmd { + struct i596_cmd cmd; + unsigned short status; + unsigned short pad; +}; + +struct mc_cmd { + struct i596_cmd cmd; + short mc_cnt; + char mc_addrs[MAX_MC_CNT*6]; +}; + +struct sa_cmd { + struct i596_cmd cmd; + char eth_addr[8]; +}; + +struct cf_cmd { + struct i596_cmd cmd; + char i596_config[16]; +}; + +struct i596_rfd { + unsigned short stat; + unsigned short cmd; + struct i596_rfd *b_next; /* Address from i596 viewpoint */ + struct i596_rbd *rbd; + unsigned short count; + unsigned short size; + struct i596_rfd *v_next; /* Address from CPUs viewpoint */ + struct i596_rfd *v_prev; +}; + +struct i596_rbd { + unsigned short count; + unsigned short zero1; + struct i596_rbd *b_next; + unsigned char *b_data; /* Address from i596 viewpoint */ + unsigned short size; + unsigned short zero2; + struct sk_buff *skb; + struct i596_rbd *v_next; + struct i596_rbd *b_addr; /* This rbd addr from i596 view */ + unsigned char *v_data; /* Address from CPUs viewpoint */ +}; + +#define TX_RING_SIZE 64 +#define RX_RING_SIZE 16 + +struct i596_scb { + unsigned short status; + unsigned short command; + struct i596_cmd *cmd; + struct i596_rfd *rfd; + unsigned long crc_err; + unsigned long align_err; + unsigned long resource_err; + unsigned long over_err; + unsigned long rcvdt_err; + unsigned long short_err; + unsigned short t_on; + unsigned short t_off; +}; + +struct i596_iscp { + unsigned long stat; + struct i596_scb *scb; +}; + +struct i596_scp { + unsigned long sysbus; + unsigned long pad; + struct i596_iscp *iscp; +}; + +struct i596_private { + volatile struct i596_scp scp; + volatile struct i596_iscp iscp; + volatile struct i596_scb scb; + struct sa_cmd sa_cmd; + struct cf_cmd cf_cmd; + struct tdr_cmd tdr_cmd; + struct mc_cmd mc_cmd; + unsigned long stat; + int last_restart __attribute__((aligned(4))); + struct i596_rfd *rfd_head; + struct i596_rbd *rbd_head; + struct i596_cmd *cmd_tail; + struct i596_cmd *cmd_head; + int cmd_backlog; + unsigned long last_cmd; + struct i596_rfd rfds[RX_RING_SIZE]; + struct i596_rbd rbds[RX_RING_SIZE]; + struct tx_cmd tx_cmds[TX_RING_SIZE]; + struct i596_tbd tbds[TX_RING_SIZE]; + int next_tx_cmd; + spinlock_t lock; +}; + +static char init_setup[] = +{ + 0x8E, /* length, prefetch on */ + 0xC8, /* fifo to 8, monitor off */ +#ifdef CONFIG_VME + 0xc0, /* don't save bad frames */ +#else + 0x80, /* don't save bad frames */ +#endif + 0x2E, /* No source address insertion, 8 byte preamble */ + 0x00, /* priority and backoff defaults */ + 0x60, /* interframe spacing */ + 0x00, /* slot time LSB */ + 0xf2, /* slot time and retries */ + 0x00, /* promiscuous mode */ + 0x00, /* collision detect */ + 0x40, /* minimum frame length */ + 0xff, + 0x00, + 0x7f /* *multi IA */ }; + +static int i596_open(struct net_device *dev); +static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev); +static irqreturn_t i596_interrupt(int irq, void *dev_id); +static int i596_close(struct net_device *dev); +static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd); +static void i596_tx_timeout (struct net_device *dev); +static void print_eth(unsigned char *buf, char *str); +static void set_multicast_list(struct net_device *dev); + +static int rx_ring_size = RX_RING_SIZE; +static int ticks_limit = 25; +static int max_cmd_backlog = TX_RING_SIZE-1; + + +static inline void CA(struct net_device *dev) +{ +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + ((struct i596_reg *) dev->base_addr)->ca = 1; + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + volatile u32 i; + + i = *(volatile u32 *) (dev->base_addr); + } +#endif +#ifdef ENABLE_APRICOT + if (MACH_IS_APRICOT) { + outw(0, (short) (dev->base_addr) + 4); + } +#endif +} + + +static inline void MPU_PORT(struct net_device *dev, int c, volatile void *x) +{ +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + struct i596_reg *p = (struct i596_reg *) (dev->base_addr); + p->porthi = ((c) | (u32) (x)) & 0xffff; + p->portlo = ((c) | (u32) (x)) >> 16; + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + u32 v = (u32) (c) | (u32) (x); + v = ((u32) (v) << 16) | ((u32) (v) >> 16); + *(volatile u32 *) dev->base_addr = v; + udelay(1); + *(volatile u32 *) dev->base_addr = v; + } +#endif +} + + +static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) +{ + while (--delcnt && lp->iscp.stat) + udelay(10); + if (!delcnt) { + printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n", + dev->name, str, lp->scb.status, lp->scb.command); + return -1; + } + else + return 0; +} + + +static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) +{ + while (--delcnt && lp->scb.command) + udelay(10); + if (!delcnt) { + printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n", + dev->name, str, lp->scb.status, lp->scb.command); + return -1; + } + else + return 0; +} + + +static inline int wait_cfg(struct net_device *dev, struct i596_cmd *cmd, int delcnt, char *str) +{ + volatile struct i596_cmd *c = cmd; + + while (--delcnt && c->command) + udelay(10); + if (!delcnt) { + printk(KERN_ERR "%s: %s.\n", dev->name, str); + return -1; + } + else + return 0; +} + + +static void i596_display_data(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + struct i596_cmd *cmd; + struct i596_rfd *rfd; + struct i596_rbd *rbd; + + printk(KERN_ERR "lp and scp at %p, .sysbus = %08lx, .iscp = %p\n", + &lp->scp, lp->scp.sysbus, lp->scp.iscp); + printk(KERN_ERR "iscp at %p, iscp.stat = %08lx, .scb = %p\n", + &lp->iscp, lp->iscp.stat, lp->iscp.scb); + printk(KERN_ERR "scb at %p, scb.status = %04x, .command = %04x," + " .cmd = %p, .rfd = %p\n", + &lp->scb, lp->scb.status, lp->scb.command, + lp->scb.cmd, lp->scb.rfd); + printk(KERN_ERR " errors: crc %lx, align %lx, resource %lx," + " over %lx, rcvdt %lx, short %lx\n", + lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err, + lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err); + cmd = lp->cmd_head; + while (cmd != I596_NULL) { + printk(KERN_ERR "cmd at %p, .status = %04x, .command = %04x, .b_next = %p\n", + cmd, cmd->status, cmd->command, cmd->b_next); + cmd = cmd->v_next; + } + rfd = lp->rfd_head; + printk(KERN_ERR "rfd_head = %p\n", rfd); + do { + printk(KERN_ERR " %p .stat %04x, .cmd %04x, b_next %p, rbd %p," + " count %04x\n", + rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd, + rfd->count); + rfd = rfd->v_next; + } while (rfd != lp->rfd_head); + rbd = lp->rbd_head; + printk(KERN_ERR "rbd_head = %p\n", rbd); + do { + printk(KERN_ERR " %p .count %04x, b_next %p, b_data %p, size %04x\n", + rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size); + rbd = rbd->v_next; + } while (rbd != lp->rbd_head); +} + + +#if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET) +static irqreturn_t i596_error(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; + + pcc2[0x28] = 1; + pcc2[0x2b] = 0x1d; + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; + + *ethirq = 1; + *ethirq = 3; + } +#endif + printk(KERN_ERR "%s: Error interrupt\n", dev->name); + i596_display_data(dev); + return IRQ_HANDLED; +} +#endif + +static inline void remove_rx_bufs(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + struct i596_rbd *rbd; + int i; + + for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { + if (rbd->skb == NULL) + break; + dev_kfree_skb(rbd->skb); + rbd->skb = NULL; + } +} + +static inline int init_rx_bufs(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + int i; + struct i596_rfd *rfd; + struct i596_rbd *rbd; + + /* First build the Receive Buffer Descriptor List */ + + for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { + struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ); + + if (skb == NULL) { + remove_rx_bufs(dev); + return -ENOMEM; + } + + skb->dev = dev; + rbd->v_next = rbd+1; + rbd->b_next = WSWAPrbd(virt_to_bus(rbd+1)); + rbd->b_addr = WSWAPrbd(virt_to_bus(rbd)); + rbd->skb = skb; + rbd->v_data = skb->data; + rbd->b_data = WSWAPchar(virt_to_bus(skb->data)); + rbd->size = PKT_BUF_SZ; +#ifdef __mc68000__ + cache_clear(virt_to_phys(skb->data), PKT_BUF_SZ); +#endif + } + lp->rbd_head = lp->rbds; + rbd = lp->rbds + rx_ring_size - 1; + rbd->v_next = lp->rbds; + rbd->b_next = WSWAPrbd(virt_to_bus(lp->rbds)); + + /* Now build the Receive Frame Descriptor List */ + + for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) { + rfd->rbd = I596_NULL; + rfd->v_next = rfd+1; + rfd->v_prev = rfd-1; + rfd->b_next = WSWAPrfd(virt_to_bus(rfd+1)); + rfd->cmd = CMD_FLEX; + } + lp->rfd_head = lp->rfds; + lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds)); + rfd = lp->rfds; + rfd->rbd = lp->rbd_head; + rfd->v_prev = lp->rfds + rx_ring_size - 1; + rfd = lp->rfds + rx_ring_size - 1; + rfd->v_next = lp->rfds; + rfd->b_next = WSWAPrfd(virt_to_bus(lp->rfds)); + rfd->cmd = CMD_EOL|CMD_FLEX; + + return 0; +} + + +static void rebuild_rx_bufs(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + int i; + + /* Ensure rx frame/buffer descriptors are tidy */ + + for (i = 0; i < rx_ring_size; i++) { + lp->rfds[i].rbd = I596_NULL; + lp->rfds[i].cmd = CMD_FLEX; + } + lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX; + lp->rfd_head = lp->rfds; + lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds)); + lp->rbd_head = lp->rbds; + lp->rfds[0].rbd = WSWAPrbd(virt_to_bus(lp->rbds)); +} + + +static int init_i596_mem(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; +#if !defined(ENABLE_MVME16x_NET) && !defined(ENABLE_BVME6000_NET) || defined(ENABLE_APRICOT) + short ioaddr = dev->base_addr; +#endif + unsigned long flags; + + MPU_PORT(dev, PORT_RESET, NULL); + + udelay(100); /* Wait 100us - seems to help */ + +#if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET) +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; + + /* Disable all ints for now */ + pcc2[0x28] = 1; + pcc2[0x2a] = 0x48; + /* Following disables snooping. Snooping is not required + * as we make appropriate use of non-cached pages for + * shared data, and cache_push/cache_clear. + */ + pcc2[0x2b] = 0x08; + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; + + *ethirq = 1; + } +#endif + + /* change the scp address */ + + MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus((void *)&lp->scp)); + +#elif defined(ENABLE_APRICOT) + + { + u32 scp = virt_to_bus(&lp->scp); + + /* change the scp address */ + outw(0, ioaddr); + outw(0, ioaddr); + outb(4, ioaddr + 0xf); + outw(scp | 2, ioaddr); + outw(scp >> 16, ioaddr); + } +#endif + + lp->last_cmd = jiffies; + +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) + lp->scp.sysbus = 0x00000054; +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) + lp->scp.sysbus = 0x0000004c; +#endif +#ifdef ENABLE_APRICOT + if (MACH_IS_APRICOT) + lp->scp.sysbus = 0x00440000; +#endif + + lp->scp.iscp = WSWAPiscp(virt_to_bus((void *)&lp->iscp)); + lp->iscp.scb = WSWAPscb(virt_to_bus((void *)&lp->scb)); + lp->iscp.stat = ISCP_BUSY; + lp->cmd_backlog = 0; + + lp->cmd_head = lp->scb.cmd = I596_NULL; + +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + lp->scb.t_on = 7 * 25; + lp->scb.t_off = 1 * 25; + } +#endif + + DEB(DEB_INIT,printk(KERN_DEBUG "%s: starting i82596.\n", dev->name)); + +#if defined(ENABLE_APRICOT) + (void) inb(ioaddr + 0x10); + outb(4, ioaddr + 0xf); +#endif + CA(dev); + + if (wait_istat(dev,lp,1000,"initialization timed out")) + goto failed; + DEB(DEB_INIT,printk(KERN_DEBUG "%s: i82596 initialization successful\n", dev->name)); + + /* Ensure rx frame/buffer descriptors are tidy */ + rebuild_rx_bufs(dev); + lp->scb.command = 0; + +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; + + /* Enable ints, etc. now */ + pcc2[0x2a] = 0x55; /* Edge sensitive */ + pcc2[0x2b] = 0x15; + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; + + *ethirq = 3; + } +#endif + + + DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdConfigure\n", dev->name)); + memcpy(lp->cf_cmd.i596_config, init_setup, 14); + lp->cf_cmd.cmd.command = CmdConfigure; + i596_add_cmd(dev, &lp->cf_cmd.cmd); + + DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name)); + memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6); + lp->sa_cmd.cmd.command = CmdSASetup; + i596_add_cmd(dev, &lp->sa_cmd.cmd); + + DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name)); + lp->tdr_cmd.cmd.command = CmdTDR; + i596_add_cmd(dev, &lp->tdr_cmd.cmd); + + spin_lock_irqsave (&lp->lock, flags); + + if (wait_cmd(dev,lp,1000,"timed out waiting to issue RX_START")) { + spin_unlock_irqrestore (&lp->lock, flags); + goto failed; + } + DEB(DEB_INIT,printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name)); + lp->scb.command = RX_START; + CA(dev); + + spin_unlock_irqrestore (&lp->lock, flags); + + if (wait_cmd(dev,lp,1000,"RX_START not processed")) + goto failed; + DEB(DEB_INIT,printk(KERN_DEBUG "%s: Receive unit started OK\n", dev->name)); + return 0; + +failed: + printk(KERN_CRIT "%s: Failed to initialise 82596\n", dev->name); + MPU_PORT(dev, PORT_RESET, NULL); + return -1; +} + +static inline int i596_rx(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + struct i596_rfd *rfd; + struct i596_rbd *rbd; + int frames = 0; + + DEB(DEB_RXFRAME,printk(KERN_DEBUG "i596_rx(), rfd_head %p, rbd_head %p\n", + lp->rfd_head, lp->rbd_head)); + + rfd = lp->rfd_head; /* Ref next frame to check */ + + while ((rfd->stat) & STAT_C) { /* Loop while complete frames */ + if (rfd->rbd == I596_NULL) + rbd = I596_NULL; + else if (rfd->rbd == lp->rbd_head->b_addr) + rbd = lp->rbd_head; + else { + printk(KERN_CRIT "%s: rbd chain broken!\n", dev->name); + /* XXX Now what? */ + rbd = I596_NULL; + } + DEB(DEB_RXFRAME, printk(KERN_DEBUG " rfd %p, rfd.rbd %p, rfd.stat %04x\n", + rfd, rfd->rbd, rfd->stat)); + + if (rbd != I596_NULL && ((rfd->stat) & STAT_OK)) { + /* a good frame */ + int pkt_len = rbd->count & 0x3fff; + struct sk_buff *skb = rbd->skb; + int rx_in_place = 0; + + DEB(DEB_RXADDR,print_eth(rbd->v_data, "received")); + frames++; + + /* Check if the packet is long enough to just accept + * without copying to a properly sized skbuff. + */ + + if (pkt_len > rx_copybreak) { + struct sk_buff *newskb; + + /* Get fresh skbuff to replace filled one. */ + newskb = dev_alloc_skb(PKT_BUF_SZ); + if (newskb == NULL) { + skb = NULL; /* drop pkt */ + goto memory_squeeze; + } + /* Pass up the skb already on the Rx ring. */ + skb_put(skb, pkt_len); + rx_in_place = 1; + rbd->skb = newskb; + newskb->dev = dev; + rbd->v_data = newskb->data; + rbd->b_data = WSWAPchar(virt_to_bus(newskb->data)); +#ifdef __mc68000__ + cache_clear(virt_to_phys(newskb->data), PKT_BUF_SZ); +#endif + } + else + skb = dev_alloc_skb(pkt_len + 2); +memory_squeeze: + if (skb == NULL) { + /* XXX tulip.c can defer packets here!! */ + printk(KERN_WARNING "%s: i596_rx Memory squeeze, dropping packet.\n", dev->name); + dev->stats.rx_dropped++; + } + else { + if (!rx_in_place) { + /* 16 byte align the data fields */ + skb_reserve(skb, 2); + memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len); + } + skb->protocol=eth_type_trans(skb,dev); + skb->len = pkt_len; +#ifdef __mc68000__ + cache_clear(virt_to_phys(rbd->skb->data), + pkt_len); +#endif + netif_rx(skb); + dev->stats.rx_packets++; + dev->stats.rx_bytes+=pkt_len; + } + } + else { + DEB(DEB_ERRORS, printk(KERN_DEBUG "%s: Error, rfd.stat = 0x%04x\n", + dev->name, rfd->stat)); + dev->stats.rx_errors++; + if ((rfd->stat) & 0x0001) + dev->stats.collisions++; + if ((rfd->stat) & 0x0080) + dev->stats.rx_length_errors++; + if ((rfd->stat) & 0x0100) + dev->stats.rx_over_errors++; + if ((rfd->stat) & 0x0200) + dev->stats.rx_fifo_errors++; + if ((rfd->stat) & 0x0400) + dev->stats.rx_frame_errors++; + if ((rfd->stat) & 0x0800) + dev->stats.rx_crc_errors++; + if ((rfd->stat) & 0x1000) + dev->stats.rx_length_errors++; + } + + /* Clear the buffer descriptor count and EOF + F flags */ + + if (rbd != I596_NULL && (rbd->count & 0x4000)) { + rbd->count = 0; + lp->rbd_head = rbd->v_next; + } + + /* Tidy the frame descriptor, marking it as end of list */ + + rfd->rbd = I596_NULL; + rfd->stat = 0; + rfd->cmd = CMD_EOL|CMD_FLEX; + rfd->count = 0; + + /* Remove end-of-list from old end descriptor */ + + rfd->v_prev->cmd = CMD_FLEX; + + /* Update record of next frame descriptor to process */ + + lp->scb.rfd = rfd->b_next; + lp->rfd_head = rfd->v_next; + rfd = lp->rfd_head; + } + + DEB(DEB_RXFRAME,printk(KERN_DEBUG "frames %d\n", frames)); + + return 0; +} + + +static void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp) +{ + struct i596_cmd *ptr; + + while (lp->cmd_head != I596_NULL) { + ptr = lp->cmd_head; + lp->cmd_head = ptr->v_next; + lp->cmd_backlog--; + + switch ((ptr->command) & 0x7) { + case CmdTx: + { + struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; + struct sk_buff *skb = tx_cmd->skb; + + dev_kfree_skb(skb); + + dev->stats.tx_errors++; + dev->stats.tx_aborted_errors++; + + ptr->v_next = ptr->b_next = I596_NULL; + tx_cmd->cmd.command = 0; /* Mark as free */ + break; + } + default: + ptr->v_next = ptr->b_next = I596_NULL; + } + } + + wait_cmd(dev,lp,100,"i596_cleanup_cmd timed out"); + lp->scb.cmd = I596_NULL; +} + +static void i596_reset(struct net_device *dev, struct i596_private *lp, + int ioaddr) +{ + unsigned long flags; + + DEB(DEB_RESET,printk(KERN_DEBUG "i596_reset\n")); + + spin_lock_irqsave (&lp->lock, flags); + + wait_cmd(dev,lp,100,"i596_reset timed out"); + + netif_stop_queue(dev); + + lp->scb.command = CUC_ABORT | RX_ABORT; + CA(dev); + + /* wait for shutdown */ + wait_cmd(dev,lp,1000,"i596_reset 2 timed out"); + spin_unlock_irqrestore (&lp->lock, flags); + + i596_cleanup_cmd(dev,lp); + i596_rx(dev); + + netif_start_queue(dev); + init_i596_mem(dev); +} + +static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd) +{ + struct i596_private *lp = dev->ml_priv; + int ioaddr = dev->base_addr; + unsigned long flags; + + DEB(DEB_ADDCMD,printk(KERN_DEBUG "i596_add_cmd\n")); + + cmd->status = 0; + cmd->command |= (CMD_EOL | CMD_INTR); + cmd->v_next = cmd->b_next = I596_NULL; + + spin_lock_irqsave (&lp->lock, flags); + + if (lp->cmd_head != I596_NULL) { + lp->cmd_tail->v_next = cmd; + lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status)); + } else { + lp->cmd_head = cmd; + wait_cmd(dev,lp,100,"i596_add_cmd timed out"); + lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status)); + lp->scb.command = CUC_START; + CA(dev); + } + lp->cmd_tail = cmd; + lp->cmd_backlog++; + + spin_unlock_irqrestore (&lp->lock, flags); + + if (lp->cmd_backlog > max_cmd_backlog) { + unsigned long tickssofar = jiffies - lp->last_cmd; + + if (tickssofar < ticks_limit) + return; + + printk(KERN_NOTICE "%s: command unit timed out, status resetting.\n", dev->name); + + i596_reset(dev, lp, ioaddr); + } +} + +static int i596_open(struct net_device *dev) +{ + int res = 0; + + DEB(DEB_OPEN,printk(KERN_DEBUG "%s: i596_open() irq %d.\n", dev->name, dev->irq)); + + if (request_irq(dev->irq, i596_interrupt, 0, "i82596", dev)) { + printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq); + return -EAGAIN; + } +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + if (request_irq(0x56, i596_error, 0, "i82596_error", dev)) { + res = -EAGAIN; + goto err_irq_dev; + } + } +#endif + res = init_rx_bufs(dev); + if (res) + goto err_irq_56; + + netif_start_queue(dev); + + if (init_i596_mem(dev)) { + res = -EAGAIN; + goto err_queue; + } + + return 0; + +err_queue: + netif_stop_queue(dev); + remove_rx_bufs(dev); +err_irq_56: +#ifdef ENABLE_MVME16x_NET + free_irq(0x56, dev); +err_irq_dev: +#endif + free_irq(dev->irq, dev); + + return res; +} + +static void i596_tx_timeout (struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + int ioaddr = dev->base_addr; + + /* Transmitter timeout, serious problems. */ + DEB(DEB_ERRORS,printk(KERN_ERR "%s: transmit timed out, status resetting.\n", + dev->name)); + + dev->stats.tx_errors++; + + /* Try to restart the adaptor */ + if (lp->last_restart == dev->stats.tx_packets) { + DEB(DEB_ERRORS,printk(KERN_ERR "Resetting board.\n")); + /* Shutdown and restart */ + i596_reset (dev, lp, ioaddr); + } else { + /* Issue a channel attention signal */ + DEB(DEB_ERRORS,printk(KERN_ERR "Kicking board.\n")); + lp->scb.command = CUC_START | RX_START; + CA (dev); + lp->last_restart = dev->stats.tx_packets; + } + + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue (dev); +} + +static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + struct tx_cmd *tx_cmd; + struct i596_tbd *tbd; + short length = skb->len; + + DEB(DEB_STARTTX,printk(KERN_DEBUG "%s: i596_start_xmit(%x,%p) called\n", + dev->name, skb->len, skb->data)); + + if (skb->len < ETH_ZLEN) { + if (skb_padto(skb, ETH_ZLEN)) + return NETDEV_TX_OK; + length = ETH_ZLEN; + } + netif_stop_queue(dev); + + tx_cmd = lp->tx_cmds + lp->next_tx_cmd; + tbd = lp->tbds + lp->next_tx_cmd; + + if (tx_cmd->cmd.command) { + printk(KERN_NOTICE "%s: xmit ring full, dropping packet.\n", + dev->name); + dev->stats.tx_dropped++; + + dev_kfree_skb(skb); + } else { + if (++lp->next_tx_cmd == TX_RING_SIZE) + lp->next_tx_cmd = 0; + tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd)); + tbd->next = I596_NULL; + + tx_cmd->cmd.command = CMD_FLEX | CmdTx; + tx_cmd->skb = skb; + + tx_cmd->pad = 0; + tx_cmd->size = 0; + tbd->pad = 0; + tbd->size = EOF | length; + + tbd->data = WSWAPchar(virt_to_bus(skb->data)); + +#ifdef __mc68000__ + cache_push(virt_to_phys(skb->data), length); +#endif + DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued")); + i596_add_cmd(dev, &tx_cmd->cmd); + + dev->stats.tx_packets++; + dev->stats.tx_bytes += length; + } + + netif_start_queue(dev); + + return NETDEV_TX_OK; +} + +static void print_eth(unsigned char *add, char *str) +{ + printk(KERN_DEBUG "i596 0x%p, %pM --> %pM %02X%02X, %s\n", + add, add + 6, add, add[12], add[13], str); +} + +static int io = 0x300; +static int irq = 10; + +static const struct net_device_ops i596_netdev_ops = { + .ndo_open = i596_open, + .ndo_stop = i596_close, + .ndo_start_xmit = i596_start_xmit, + .ndo_set_multicast_list = set_multicast_list, + .ndo_tx_timeout = i596_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +struct net_device * __init i82596_probe(int unit) +{ + struct net_device *dev; + int i; + struct i596_private *lp; + char eth_addr[8]; + static int probed; + int err; + + if (probed) + return ERR_PTR(-ENODEV); + probed++; + + dev = alloc_etherdev(0); + if (!dev) + return ERR_PTR(-ENOMEM); + + if (unit >= 0) { + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + } else { + dev->base_addr = io; + dev->irq = irq; + } + +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) { + printk(KERN_NOTICE "Ethernet probe disabled - chip not present\n"); + err = -ENODEV; + goto out; + } + memcpy(eth_addr, (void *) 0xfffc1f2c, 6); /* YUCK! Get addr from NOVRAM */ + dev->base_addr = MVME_I596_BASE; + dev->irq = (unsigned) MVME16x_IRQ_I596; + goto found; + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE; + unsigned char msr = rtc[3]; + int i; + + rtc[3] |= 0x80; + for (i = 0; i < 6; i++) + eth_addr[i] = rtc[i * 4 + 7]; /* Stored in RTC RAM at offset 1 */ + rtc[3] = msr; + dev->base_addr = BVME_I596_BASE; + dev->irq = (unsigned) BVME_IRQ_I596; + goto found; + } +#endif +#ifdef ENABLE_APRICOT + { + int checksum = 0; + int ioaddr = 0x300; + + /* this is easy the ethernet interface can only be at 0x300 */ + /* first check nothing is already registered here */ + + if (!request_region(ioaddr, I596_TOTAL_SIZE, DRV_NAME)) { + printk(KERN_ERR "82596: IO address 0x%04x in use\n", ioaddr); + err = -EBUSY; + goto out; + } + + dev->base_addr = ioaddr; + + for (i = 0; i < 8; i++) { + eth_addr[i] = inb(ioaddr + 8 + i); + checksum += eth_addr[i]; + } + + /* checksum is a multiple of 0x100, got this wrong first time + some machines have 0x100, some 0x200. The DOS driver doesn't + even bother with the checksum. + Some other boards trip the checksum.. but then appear as + ether address 0. Trap these - AC */ + + if ((checksum % 0x100) || + (memcmp(eth_addr, "\x00\x00\x49", 3) != 0)) { + err = -ENODEV; + goto out1; + } + + dev->irq = 10; + goto found; + } +#endif + err = -ENODEV; + goto out; + +found: + dev->mem_start = (int)__get_free_pages(GFP_ATOMIC, 0); + if (!dev->mem_start) { + err = -ENOMEM; + goto out1; + } + + DEB(DEB_PROBE,printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr)); + + for (i = 0; i < 6; i++) + DEB(DEB_PROBE,printk(" %2.2X", dev->dev_addr[i] = eth_addr[i])); + + DEB(DEB_PROBE,printk(" IRQ %d.\n", dev->irq)); + + DEB(DEB_PROBE,printk(KERN_INFO "%s", version)); + + /* The 82596-specific entries in the device structure. */ + dev->netdev_ops = &i596_netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; + + dev->ml_priv = (void *)(dev->mem_start); + + lp = dev->ml_priv; + DEB(DEB_INIT,printk(KERN_DEBUG "%s: lp at 0x%08lx (%zd bytes), " + "lp->scb at 0x%08lx\n", + dev->name, (unsigned long)lp, + sizeof(struct i596_private), (unsigned long)&lp->scb)); + memset((void *) lp, 0, sizeof(struct i596_private)); + +#ifdef __mc68000__ + cache_push(virt_to_phys((void *)(dev->mem_start)), 4096); + cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096); + kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER); +#endif + lp->scb.command = 0; + lp->scb.cmd = I596_NULL; + lp->scb.rfd = I596_NULL; + spin_lock_init(&lp->lock); + + err = register_netdev(dev); + if (err) + goto out2; + return dev; +out2: +#ifdef __mc68000__ + /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING, + * XXX which may be invalid (CONFIG_060_WRITETHROUGH) + */ + kernel_set_cachemode((void *)(dev->mem_start), 4096, + IOMAP_FULL_CACHING); +#endif + free_page ((u32)(dev->mem_start)); +out1: +#ifdef ENABLE_APRICOT + release_region(dev->base_addr, I596_TOTAL_SIZE); +#endif +out: + free_netdev(dev); + return ERR_PTR(err); +} + +static irqreturn_t i596_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct i596_private *lp; + short ioaddr; + unsigned short status, ack_cmd = 0; + int handled = 0; + +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) { + i596_error(irq, dev_id); + return IRQ_HANDLED; + } + } +#endif + if (dev == NULL) { + printk(KERN_ERR "i596_interrupt(): irq %d for unknown device.\n", irq); + return IRQ_NONE; + } + + ioaddr = dev->base_addr; + lp = dev->ml_priv; + + spin_lock (&lp->lock); + + wait_cmd(dev,lp,100,"i596 interrupt, timeout"); + status = lp->scb.status; + + DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt, IRQ %d, status %4.4x.\n", + dev->name, irq, status)); + + ack_cmd = status & 0xf000; + + if ((status & 0x8000) || (status & 0x2000)) { + struct i596_cmd *ptr; + + handled = 1; + if ((status & 0x8000)) + DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt completed command.\n", dev->name)); + if ((status & 0x2000)) + DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700)); + + while ((lp->cmd_head != I596_NULL) && (lp->cmd_head->status & STAT_C)) { + ptr = lp->cmd_head; + + DEB(DEB_STATUS,printk(KERN_DEBUG "cmd_head->status = %04x, ->command = %04x\n", + lp->cmd_head->status, lp->cmd_head->command)); + lp->cmd_head = ptr->v_next; + lp->cmd_backlog--; + + switch ((ptr->command) & 0x7) { + case CmdTx: + { + struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; + struct sk_buff *skb = tx_cmd->skb; + + if ((ptr->status) & STAT_OK) { + DEB(DEB_TXADDR,print_eth(skb->data, "tx-done")); + } else { + dev->stats.tx_errors++; + if ((ptr->status) & 0x0020) + dev->stats.collisions++; + if (!((ptr->status) & 0x0040)) + dev->stats.tx_heartbeat_errors++; + if ((ptr->status) & 0x0400) + dev->stats.tx_carrier_errors++; + if ((ptr->status) & 0x0800) + dev->stats.collisions++; + if ((ptr->status) & 0x1000) + dev->stats.tx_aborted_errors++; + } + + dev_kfree_skb_irq(skb); + + tx_cmd->cmd.command = 0; /* Mark free */ + break; + } + case CmdTDR: + { + unsigned short status = ((struct tdr_cmd *)ptr)->status; + + if (status & 0x8000) { + DEB(DEB_TDR,printk(KERN_INFO "%s: link ok.\n", dev->name)); + } else { + if (status & 0x4000) + printk(KERN_ERR "%s: Transceiver problem.\n", dev->name); + if (status & 0x2000) + printk(KERN_ERR "%s: Termination problem.\n", dev->name); + if (status & 0x1000) + printk(KERN_ERR "%s: Short circuit.\n", dev->name); + + DEB(DEB_TDR,printk(KERN_INFO "%s: Time %d.\n", dev->name, status & 0x07ff)); + } + break; + } + case CmdConfigure: + case CmdMulticastList: + /* Zap command so set_multicast_list() knows it is free */ + ptr->command = 0; + break; + } + ptr->v_next = ptr->b_next = I596_NULL; + lp->last_cmd = jiffies; + } + + ptr = lp->cmd_head; + while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) { + ptr->command &= 0x1fff; + ptr = ptr->v_next; + } + + if ((lp->cmd_head != I596_NULL)) + ack_cmd |= CUC_START; + lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status)); + } + if ((status & 0x1000) || (status & 0x4000)) { + if ((status & 0x4000)) + DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt received a frame.\n", dev->name)); + i596_rx(dev); + /* Only RX_START if stopped - RGH 07-07-96 */ + if (status & 0x1000) { + if (netif_running(dev)) { + DEB(DEB_ERRORS,printk(KERN_ERR "%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status)); + ack_cmd |= RX_START; + dev->stats.rx_errors++; + dev->stats.rx_fifo_errors++; + rebuild_rx_bufs(dev); + } + } + } + wait_cmd(dev,lp,100,"i596 interrupt, timeout"); + lp->scb.command = ack_cmd; + +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + /* Ack the interrupt */ + + volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; + + pcc2[0x2a] |= 0x08; + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; + + *ethirq = 1; + *ethirq = 3; + } +#endif +#ifdef ENABLE_APRICOT + (void) inb(ioaddr + 0x10); + outb(4, ioaddr + 0xf); +#endif + CA(dev); + + DEB(DEB_INTS,printk(KERN_DEBUG "%s: exiting interrupt.\n", dev->name)); + + spin_unlock (&lp->lock); + return IRQ_RETVAL(handled); +} + +static int i596_close(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + unsigned long flags; + + netif_stop_queue(dev); + + DEB(DEB_INIT,printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n", + dev->name, lp->scb.status)); + + spin_lock_irqsave(&lp->lock, flags); + + wait_cmd(dev,lp,100,"close1 timed out"); + lp->scb.command = CUC_ABORT | RX_ABORT; + CA(dev); + + wait_cmd(dev,lp,100,"close2 timed out"); + + spin_unlock_irqrestore(&lp->lock, flags); + DEB(DEB_STRUCT,i596_display_data(dev)); + i596_cleanup_cmd(dev,lp); + +#ifdef ENABLE_MVME16x_NET + if (MACH_IS_MVME16x) { + volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; + + /* Disable all ints */ + pcc2[0x28] = 1; + pcc2[0x2a] = 0x40; + pcc2[0x2b] = 0x40; /* Set snooping bits now! */ + } +#endif +#ifdef ENABLE_BVME6000_NET + if (MACH_IS_BVME6000) { + volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; + + *ethirq = 1; + } +#endif + +#ifdef ENABLE_MVME16x_NET + free_irq(0x56, dev); +#endif + free_irq(dev->irq, dev); + remove_rx_bufs(dev); + + return 0; +} + +/* + * Set or clear the multicast filter for this adaptor. + */ + +static void set_multicast_list(struct net_device *dev) +{ + struct i596_private *lp = dev->ml_priv; + int config = 0, cnt; + + DEB(DEB_MULTI,printk(KERN_DEBUG "%s: set multicast list, %d entries, promisc %s, allmulti %s\n", + dev->name, netdev_mc_count(dev), + dev->flags & IFF_PROMISC ? "ON" : "OFF", + dev->flags & IFF_ALLMULTI ? "ON" : "OFF")); + + if (wait_cfg(dev, &lp->cf_cmd.cmd, 1000, "config change request timed out")) + return; + + if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) { + lp->cf_cmd.i596_config[8] |= 0x01; + config = 1; + } + if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) { + lp->cf_cmd.i596_config[8] &= ~0x01; + config = 1; + } + if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) { + lp->cf_cmd.i596_config[11] &= ~0x20; + config = 1; + } + if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) { + lp->cf_cmd.i596_config[11] |= 0x20; + config = 1; + } + if (config) { + lp->cf_cmd.cmd.command = CmdConfigure; + i596_add_cmd(dev, &lp->cf_cmd.cmd); + } + + cnt = netdev_mc_count(dev); + if (cnt > MAX_MC_CNT) + { + cnt = MAX_MC_CNT; + printk(KERN_ERR "%s: Only %d multicast addresses supported", + dev->name, cnt); + } + + if (!netdev_mc_empty(dev)) { + struct netdev_hw_addr *ha; + unsigned char *cp; + struct mc_cmd *cmd; + + if (wait_cfg(dev, &lp->mc_cmd.cmd, 1000, "multicast list change request timed out")) + return; + cmd = &lp->mc_cmd; + cmd->cmd.command = CmdMulticastList; + cmd->mc_cnt = cnt * ETH_ALEN; + cp = cmd->mc_addrs; + netdev_for_each_mc_addr(ha, dev) { + if (!cnt--) + break; + memcpy(cp, ha->addr, ETH_ALEN); + if (i596_debug > 1) + DEB(DEB_MULTI,printk(KERN_INFO "%s: Adding address %pM\n", + dev->name, cp)); + cp += ETH_ALEN; + } + i596_add_cmd(dev, &cmd->cmd); + } +} + +#ifdef MODULE +static struct net_device *dev_82596; + +#ifdef ENABLE_APRICOT +module_param(irq, int, 0); +MODULE_PARM_DESC(irq, "Apricot IRQ number"); +#endif + +static int debug = -1; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "i82596 debug mask"); + +int __init init_module(void) +{ + if (debug >= 0) + i596_debug = debug; + dev_82596 = i82596_probe(-1); + if (IS_ERR(dev_82596)) + return PTR_ERR(dev_82596); + return 0; +} + +void __exit cleanup_module(void) +{ + unregister_netdev(dev_82596); +#ifdef __mc68000__ + /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING, + * XXX which may be invalid (CONFIG_060_WRITETHROUGH) + */ + + kernel_set_cachemode((void *)(dev_82596->mem_start), 4096, + IOMAP_FULL_CACHING); +#endif + free_page ((u32)(dev_82596->mem_start)); +#ifdef ENABLE_APRICOT + /* If we don't do this, we can't re-insmod it later. */ + release_region(dev_82596->base_addr, I596_TOTAL_SIZE); +#endif + free_netdev(dev_82596); +} + +#endif /* MODULE */ |