diff options
Diffstat (limited to 'drivers/net/sk_g16.c')
| -rw-r--r-- | drivers/net/sk_g16.c | 2066 |
1 files changed, 0 insertions, 2066 deletions
diff --git a/drivers/net/sk_g16.c b/drivers/net/sk_g16.c deleted file mode 100644 index 134ae0e6495..00000000000 --- a/drivers/net/sk_g16.c +++ /dev/null @@ -1,2066 +0,0 @@ -/*- - * Copyright (C) 1994 by PJD Weichmann & SWS Bern, Switzerland - * - * This software may be used and distributed according to the terms - * of the GNU General Public License, incorporated herein by reference. - * - * Module : sk_g16.c - * - * Version : $Revision: 1.1 $ - * - * Author : Patrick J.D. Weichmann - * - * Date Created : 94/05/26 - * Last Updated : $Date: 1994/06/30 16:25:15 $ - * - * Description : Schneider & Koch G16 Ethernet Device Driver for - * Linux Kernel >= 1.1.22 - * Update History : - * Paul Gortmaker, 03/97: Fix for v2.1.x to use read{b,w} - * write{b,w} and memcpy -> memcpy_{to,from}io - * - * Jeff Garzik, 06/2000, Modularize - * --*/ - -static const char rcsid[] = "$Id: sk_g16.c,v 1.1 1994/06/30 16:25:15 root Exp $"; - -/* - * The Schneider & Koch (SK) G16 Network device driver is based - * on the 'ni6510' driver from Michael Hipp which can be found at - * ftp://sunsite.unc.edu/pub/Linux/system/Network/drivers/nidrivers.tar.gz - * - * Sources: 1) ni6510.c by M. Hipp - * 2) depca.c by D.C. Davies - * 3) skeleton.c by D. Becker - * 4) Am7990 Local Area Network Controller for Ethernet (LANCE), - * AMD, Pub. #05698, June 1989 - * - * Many Thanks for helping me to get things working to: - * - * A. Cox (A.Cox@swansea.ac.uk) - * M. Hipp (mhipp@student.uni-tuebingen.de) - * R. Bolz (Schneider & Koch, Germany) - * - * To Do: - * - Support of SK_G8 and other SK Network Cards. - * - Autoset memory mapped RAM. Check for free memory and then - * configure RAM correctly. - * - SK_close should really set card in to initial state. - * - Test if IRQ 3 is not switched off. Use autoirq() functionality. - * (as in /drivers/net/skeleton.c) - * - Implement Multicast addressing. At minimum something like - * in depca.c. - * - Redo the statistics part. - * - Try to find out if the board is in 8 Bit or 16 Bit slot. - * If in 8 Bit mode don't use IRQ 11. - * - (Try to make it slightly faster.) - * - Power management support - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/fcntl.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/bitops.h> - -#include <asm/system.h> -#include <asm/io.h> - -#include "sk_g16.h" - -/* - * Schneider & Koch Card Definitions - * ================================= - */ - -#define SK_NAME "SK_G16" - -/* - * SK_G16 Configuration - * -------------------- - */ - -/* - * Abbreviations - * ------------- - * - * RAM - used for the 16KB shared memory - * Boot_ROM, ROM - are used for referencing the BootEPROM - * - * SK_BOOT_ROM and SK_ADDR are symbolic constants used to configure - * the behaviour of the driver and the SK_G16. - * - * ! See sk_g16.install on how to install and configure the driver ! - * - * SK_BOOT_ROM defines if the Boot_ROM should be switched off or not. - * - * SK_ADDR defines the address where the RAM will be mapped into the real - * host memory. - * valid addresses are from 0xa0000 to 0xfc000 in 16Kbyte steps. - */ - -#define SK_BOOT_ROM 1 /* 1=BootROM on 0=off */ - -#define SK_ADDR 0xcc000 - -/* - * In POS3 are bits A14-A19 of the address bus. These bits can be set - * to choose the RAM address. That's why we only can choose the RAM address - * in 16KB steps. - */ - -#define POS_ADDR (rom_addr>>14) /* Do not change this line */ - -/* - * SK_G16 I/O PORT's + IRQ's + Boot_ROM locations - * ---------------------------------------------- - */ - -/* - * As nearly every card has also SK_G16 a specified I/O Port region and - * only a few possible IRQ's. - * In the Installation Guide from Schneider & Koch is listed a possible - * Interrupt IRQ2. IRQ2 is always IRQ9 in boards with two cascaded interrupt - * controllers. So we use in SK_IRQS IRQ9. - */ - -/* Don't touch any of the following #defines. */ - -#define SK_IO_PORTS { 0x100, 0x180, 0x208, 0x220, 0x288, 0x320, 0x328, 0x390, 0 } - -#define SK_IRQS { 3, 5, 9, 11, 0 } - -#define SK_BOOT_ROM_LOCATIONS { 0xc0000, 0xc4000, 0xc8000, 0xcc000, 0xd0000, 0xd4000, 0xd8000, 0xdc000, 0 } - -#define SK_BOOT_ROM_ID { 0x55, 0xaa, 0x10, 0x50, 0x06, 0x33 } - -/* - * SK_G16 POS REGISTERS - * -------------------- - */ - -/* - * SK_G16 has a Programmable Option Select (POS) Register. - * The POS is composed of 8 separate registers (POS0-7) which - * are I/O mapped on an address set by the W1 switch. - * - */ - -#define SK_POS_SIZE 8 /* 8 I/O Ports are used by SK_G16 */ - -#define SK_POS0 ioaddr /* Card-ID Low (R) */ -#define SK_POS1 ioaddr+1 /* Card-ID High (R) */ -#define SK_POS2 ioaddr+2 /* Card-Enable, Boot-ROM Disable (RW) */ -#define SK_POS3 ioaddr+3 /* Base address of RAM */ -#define SK_POS4 ioaddr+4 /* IRQ */ - -/* POS5 - POS7 are unused */ - -/* - * SK_G16 MAC PREFIX - * ----------------- - */ - -/* - * Scheider & Koch manufacturer code (00:00:a5). - * This must be checked, that we are sure it is a SK card. - */ - -#define SK_MAC0 0x00 -#define SK_MAC1 0x00 -#define SK_MAC2 0x5a - -/* - * SK_G16 ID - * --------- - */ - -/* - * If POS0,POS1 contain the following ID, then we know - * at which I/O Port Address we are. - */ - -#define SK_IDLOW 0xfd -#define SK_IDHIGH 0x6a - - -/* - * LANCE POS Bit definitions - * ------------------------- - */ - -#define SK_ROM_RAM_ON (POS2_CARD) -#define SK_ROM_RAM_OFF (POS2_EPROM) -#define SK_ROM_ON (inb(SK_POS2) & POS2_CARD) -#define SK_ROM_OFF (inb(SK_POS2) | POS2_EPROM) -#define SK_RAM_ON (inb(SK_POS2) | POS2_CARD) -#define SK_RAM_OFF (inb(SK_POS2) & POS2_EPROM) - -#define POS2_CARD 0x0001 /* 1 = SK_G16 on 0 = off */ -#define POS2_EPROM 0x0002 /* 1 = Boot EPROM off 0 = on */ - -/* - * SK_G16 Memory mapped Registers - * ------------------------------ - * - */ - -#define SK_IOREG (&board->ioreg) /* LANCE data registers. */ -#define SK_PORT (&board->port) /* Control, Status register */ -#define SK_IOCOM (&board->iocom) /* I/O Command */ - -/* - * SK_G16 Status/Control Register bits - * ----------------------------------- - * - * (C) Controlreg (S) Statusreg - */ - -/* - * Register transfer: 0 = no transfer - * 1 = transferring data between LANCE and I/O reg - */ -#define SK_IORUN 0x20 - -/* - * LANCE interrupt: 0 = LANCE interrupt occurred - * 1 = no LANCE interrupt occurred - */ -#define SK_IRQ 0x10 - -#define SK_RESET 0x08 /* Reset SK_CARD: 0 = RESET 1 = normal */ -#define SK_RW 0x02 /* 0 = write to 1 = read from */ -#define SK_ADR 0x01 /* 0 = REG DataPort 1 = RAP Reg addr port */ - - -#define SK_RREG SK_RW /* Transferdirection to read from lance */ -#define SK_WREG 0 /* Transferdirection to write to lance */ -#define SK_RAP SK_ADR /* Destination Register RAP */ -#define SK_RDATA 0 /* Destination Register REG DataPort */ - -/* - * SK_G16 I/O Command - * ------------------ - */ - -/* - * Any bitcombination sets the internal I/O bit (transfer will start) - * when written to I/O Command - */ - -#define SK_DOIO 0x80 /* Do Transfer */ - -/* - * LANCE RAP (Register Address Port). - * --------------------------------- - */ - -/* - * The LANCE internal registers are selected through the RAP. - * The Registers are: - * - * CSR0 - Status and Control flags - * CSR1 - Low order bits of initialize block (bits 15:00) - * CSR2 - High order bits of initialize block (bits 07:00, 15:08 are reserved) - * CSR3 - Allows redefinition of the Bus Master Interface. - * This register must be set to 0x0002, which means BSWAP = 0, - * ACON = 1, BCON = 0; - * - */ - -#define CSR0 0x00 -#define CSR1 0x01 -#define CSR2 0x02 -#define CSR3 0x03 - -/* - * General Definitions - * =================== - */ - -/* - * Set the number of Tx and Rx buffers, using Log_2(# buffers). - * We have 16KB RAM which can be accessed by the LANCE. In the - * memory are not only the buffers but also the ring descriptors and - * the initialize block. - * Don't change anything unless you really know what you do. - */ - -#define LC_LOG_TX_BUFFERS 1 /* (2 == 2^^1) 2 Transmit buffers */ -#define LC_LOG_RX_BUFFERS 3 /* (8 == 2^^3) 8 Receive buffers */ - -/* Descriptor ring sizes */ - -#define TMDNUM (1 << (LC_LOG_TX_BUFFERS)) /* 2 Transmit descriptor rings */ -#define RMDNUM (1 << (LC_LOG_RX_BUFFERS)) /* 8 Receive Buffers */ - -/* Define Mask for setting RMD, TMD length in the LANCE init_block */ - -#define TMDNUMMASK (LC_LOG_TX_BUFFERS << 29) -#define RMDNUMMASK (LC_LOG_RX_BUFFERS << 29) - -/* - * Data Buffer size is set to maximum packet length. - */ - -#define PKT_BUF_SZ 1518 - -/* - * The number of low I/O ports used by the ethercard. - */ - -#define ETHERCARD_TOTAL_SIZE SK_POS_SIZE - -/* - * SK_DEBUG - * - * Here you can choose what level of debugging wanted. - * - * If SK_DEBUG and SK_DEBUG2 are undefined, then only the - * necessary messages will be printed. - * - * If SK_DEBUG is defined, there will be many debugging prints - * which can help to find some mistakes in configuration or even - * in the driver code. - * - * If SK_DEBUG2 is defined, many many messages will be printed - * which normally you don't need. I used this to check the interrupt - * routine. - * - * (If you define only SK_DEBUG2 then only the messages for - * checking interrupts will be printed!) - * - * Normal way of live is: - * - * For the whole thing get going let both symbolic constants - * undefined. If you face any problems and you know what's going - * on (you know something about the card and you can interpret some - * hex LANCE register output) then define SK_DEBUG - * - */ - -#undef SK_DEBUG /* debugging */ -#undef SK_DEBUG2 /* debugging with more verbose report */ - -#ifdef SK_DEBUG -#define PRINTK(x) printk x -#else -#define PRINTK(x) /**/ -#endif - -#ifdef SK_DEBUG2 -#define PRINTK2(x) printk x -#else -#define PRINTK2(x) /**/ -#endif - -/* - * SK_G16 RAM - * - * The components are memory mapped and can be set in a region from - * 0x00000 through 0xfc000 in 16KB steps. - * - * The Network components are: dual ported RAM, Prom, I/O Reg, Status-, - * Controlregister and I/O Command. - * - * dual ported RAM: This is the only memory region which the LANCE chip - * has access to. From the Lance it is addressed from 0x0000 to - * 0x3fbf. The host accesses it normally. - * - * PROM: The PROM obtains the ETHERNET-MAC-Address. It is realised as a - * 8-Bit PROM, this means only the 16 even addresses are used of the - * 32 Byte Address region. Access to an odd address results in invalid - * data. - * - * LANCE I/O Reg: The I/O Reg is build of 4 single Registers, Low-Byte Write, - * Hi-Byte Write, Low-Byte Read, Hi-Byte Read. - * Transfer from or to the LANCE is always in 16Bit so Low and High - * registers are always relevant. - * - * The Data from the Readregister is not the data in the Writeregister!! - * - * Port: Status- and Controlregister. - * Two different registers which share the same address, Status is - * read-only, Control is write-only. - * - * I/O Command: - * Any bitcombination written in here starts the transmission between - * Host and LANCE. - */ - -typedef struct -{ - unsigned char ram[0x3fc0]; /* 16KB dual ported ram */ - unsigned char rom[0x0020]; /* 32Byte PROM containing 6Byte MAC */ - unsigned char res1[0x0010]; /* reserved */ - unsigned volatile short ioreg;/* LANCE I/O Register */ - unsigned volatile char port; /* Statusregister and Controlregister */ - unsigned char iocom; /* I/O Command Register */ -} SK_RAM; - -/* struct */ - -/* - * This is the structure for the dual ported ram. We - * have exactly 16 320 Bytes. In here there must be: - * - * - Initialize Block (starting at a word boundary) - * - Receive and Transmit Descriptor Rings (quadword boundary) - * - Data Buffers (arbitrary boundary) - * - * This is because LANCE has on SK_G16 only access to the dual ported - * RAM and nowhere else. - */ - -struct SK_ram -{ - struct init_block ib; - struct tmd tmde[TMDNUM]; - struct rmd rmde[RMDNUM]; - char tmdbuf[TMDNUM][PKT_BUF_SZ]; - char rmdbuf[RMDNUM][PKT_BUF_SZ]; -}; - -/* - * Structure where all necessary information is for ring buffer - * management and statistics. - */ - -struct priv -{ - struct SK_ram *ram; /* dual ported ram structure */ - struct rmd *rmdhead; /* start of receive ring descriptors */ - struct tmd *tmdhead; /* start of transmit ring descriptors */ - int rmdnum; /* actual used ring descriptor */ - int tmdnum; /* actual transmit descriptor for transmitting data */ - int tmdlast; /* last sent descriptor used for error handling, etc */ - void *rmdbufs[RMDNUM]; /* pointer to the receive buffers */ - void *tmdbufs[TMDNUM]; /* pointer to the transmit buffers */ - struct net_device_stats stats; /* Device driver statistics */ -}; - -/* global variable declaration */ - -/* IRQ map used to reserve a IRQ (see SK_open()) */ - -/* static variables */ - -static SK_RAM *board; /* pointer to our memory mapped board components */ -static DEFINE_SPINLOCK(SK_lock); - -/* Macros */ - - -/* Function Prototypes */ - -/* - * Device Driver functions - * ----------------------- - * See for short explanation of each function its definitions header. - */ - -static int SK_probe(struct net_device *dev, short ioaddr); - -static void SK_timeout(struct net_device *dev); -static int SK_open(struct net_device *dev); -static int SK_send_packet(struct sk_buff *skb, struct net_device *dev); -static irqreturn_t SK_interrupt(int irq, void *dev_id, struct pt_regs * regs); -static void SK_rxintr(struct net_device *dev); -static void SK_txintr(struct net_device *dev); -static int SK_close(struct net_device *dev); - -static struct net_device_stats *SK_get_stats(struct net_device *dev); - -unsigned int SK_rom_addr(void); - -static void set_multicast_list(struct net_device *dev); - -/* - * LANCE Functions - * --------------- - */ - -static int SK_lance_init(struct net_device *dev, unsigned short mode); -void SK_reset_board(void); -void SK_set_RAP(int reg_number); -int SK_read_reg(int reg_number); -int SK_rread_reg(void); -void SK_write_reg(int reg_number, int value); - -/* - * Debugging functions - * ------------------- - */ - -void SK_print_pos(struct net_device *dev, char *text); -void SK_print_dev(struct net_device *dev, char *text); -void SK_print_ram(struct net_device *dev); - - -/*- - * Function : SK_init - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/26 - * - * Description : Check for a SK_G16 network adaptor and initialize it. - * This function gets called by dev_init which initializes - * all Network devices. - * - * Parameters : I : struct net_device *dev - structure preconfigured - * from Space.c - * Return Value : 0 = Driver Found and initialized - * Errors : ENODEV - no device found - * ENXIO - not probed - * Globals : None - * Update History : - * YY/MM/DD uid Description --*/ - -static int io; /* 0 == probe */ - -/* - * Check for a network adaptor of this type, and return '0' if one exists. - * If dev->base_addr == 0, probe all likely locations. - * If dev->base_addr == 1, always return failure. - */ - -struct net_device * __init SK_init(int unit) -{ - int *port, ports[] = SK_IO_PORTS; /* SK_G16 supported ports */ - static unsigned version_printed; - struct net_device *dev = alloc_etherdev(sizeof(struct priv)); - int err = -ENODEV; - - if (!dev) - return ERR_PTR(-ENOMEM); - - if (unit >= 0) { - sprintf(dev->name, "eth%d", unit); - netdev_boot_setup_check(dev); - io = dev->base_addr; - } - - if (version_printed++ == 0) - PRINTK(("%s: %s", SK_NAME, rcsid)); - - if (io > 0xff) { /* Check a single specified address */ - err = -EBUSY; - /* Check if on specified address is a SK_G16 */ - if (request_region(io, ETHERCARD_TOTAL_SIZE, "sk_g16")) { - err = SK_probe(dev, io); - if (!err) - goto got_it; - release_region(io, ETHERCARD_TOTAL_SIZE); - } - } else if (io > 0) { /* Don't probe at all */ - err = -ENXIO; - } else { - /* Autoprobe base_addr */ - for (port = &ports[0]; *port; port++) { - io = *port; - - /* Check if I/O Port region is used by another board */ - if (!request_region(io, ETHERCARD_TOTAL_SIZE, "sk_g16")) - continue; /* Try next Port address */ - - /* Check if at ioaddr is a SK_G16 */ - if (SK_probe(dev, io) == 0) - goto got_it; - - release_region(io, ETHERCARD_TOTAL_SIZE); - } - } -err_out: - free_netdev(dev); - return ERR_PTR(err); - -got_it: - err = register_netdev(dev); - if (err) { - release_region(dev->base_addr, ETHERCARD_TOTAL_SIZE); - goto err_out; - } - return dev; - -} /* End of SK_init */ - - -MODULE_AUTHOR("Patrick J.D. Weichmann"); -MODULE_DESCRIPTION("Schneider & Koch G16 Ethernet Device Driver"); -MODULE_LICENSE("GPL"); -MODULE_PARM(io, "i"); -MODULE_PARM_DESC(io, "0 to probe common ports (unsafe), or the I/O base of the board"); - - -#ifdef MODULE - -static struct net_device *SK_dev; - -static int __init SK_init_module (void) -{ - SK_dev = SK_init(-1); - return IS_ERR(SK_dev) ? PTR_ERR(SK_dev) : 0; -} - -static void __exit SK_cleanup_module (void) -{ - unregister_netdev(SK_dev); - release_region(SK_dev->base_addr, ETHERCARD_TOTAL_SIZE); - free_netdev(SK_dev); -} - -module_init(SK_init_module); -module_exit(SK_cleanup_module); -#endif - - -/*- - * Function : SK_probe - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/26 - * - * Description : This function is called by SK_init and - * does the main part of initialization. - * - * Parameters : I : struct net_device *dev - SK_G16 device structure - * I : short ioaddr - I/O Port address where POS is. - * Return Value : 0 = Initialization done - * Errors : ENODEV - No SK_G16 found - * -1 - Configuration problem - * Globals : board - pointer to SK_RAM - * Update History : - * YY/MM/DD uid Description - * 94/06/30 pwe SK_ADDR now checked and at the correct place --*/ - -int __init SK_probe(struct net_device *dev, short ioaddr) -{ - int i,j; /* Counters */ - int sk_addr_flag = 0; /* SK ADDR correct? 1 - no, 0 - yes */ - unsigned int rom_addr; /* used to store RAM address used for POS_ADDR */ - - struct priv *p = netdev_priv(dev); /* SK_G16 private structure */ - - if (inb(SK_POS0) != SK_IDLOW || inb(SK_POS1) != SK_IDHIGH) - return -ENODEV; - dev->base_addr = ioaddr; - - if (SK_ADDR & 0x3fff || SK_ADDR < 0xa0000) - { - - sk_addr_flag = 1; - - /* - * Now here we could use a routine which searches for a free - * place in the ram and set SK_ADDR if found. TODO. - */ - } - - if (SK_BOOT_ROM) /* Shall we keep Boot_ROM on ? */ - { - PRINTK(("## %s: SK_BOOT_ROM is set.\n", SK_NAME)); - - rom_addr = SK_rom_addr(); - - if (rom_addr == 0) /* No Boot_ROM found */ - { - if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */ - { - printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n", - dev->name, SK_ADDR); - return -1; - } - - rom_addr = SK_ADDR; /* assign predefined address */ - - PRINTK(("## %s: NO Bootrom found \n", SK_NAME)); - - outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */ - outb(POS_ADDR, SK_POS3); /* Set RAM address */ - outb(SK_RAM_ON, SK_POS2); /* enable RAM */ - } - else if (rom_addr == SK_ADDR) - { - printk("%s: RAM + ROM are set to the same address %#08x\n" - " Check configuration. Now switching off Boot_ROM\n", - SK_NAME, rom_addr); - - outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off*/ - outb(POS_ADDR, SK_POS3); /* Set RAM address */ - outb(SK_RAM_ON, SK_POS2); /* enable RAM */ - } - else - { - PRINTK(("## %s: Found ROM at %#08x\n", SK_NAME, rom_addr)); - PRINTK(("## %s: Keeping Boot_ROM on\n", SK_NAME)); - - if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */ - { - printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n", - dev->name, SK_ADDR); - return -1; - } - - rom_addr = SK_ADDR; - - outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */ - outb(POS_ADDR, SK_POS3); /* Set RAM address */ - outb(SK_ROM_RAM_ON, SK_POS2); /* RAM on, BOOT_ROM on */ - } - } - else /* Don't keep Boot_ROM */ - { - PRINTK(("## %s: SK_BOOT_ROM is not set.\n", SK_NAME)); - - if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */ - { - printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n", - dev->name, SK_ADDR); - return -1; - } - - rom_addr = SK_rom_addr(); /* Try to find a Boot_ROM */ - - /* IF we find a Boot_ROM disable it */ - - outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */ - - /* We found a Boot_ROM and it's gone. Set RAM address on - * Boot_ROM address. - */ - - if (rom_addr) - { - printk("%s: We found Boot_ROM at %#08x. Now setting RAM on" - "that address\n", SK_NAME, rom_addr); - - outb(POS_ADDR, SK_POS3); /* Set RAM on Boot_ROM address */ - } - else /* We did not find a Boot_ROM, use predefined SK_ADDR for ram */ - { - if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */ - { - printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n", - dev->name, SK_ADDR); - return -1; - } - - rom_addr = SK_ADDR; - - outb(POS_ADDR, SK_POS3); /* Set RAM address */ - } - outb(SK_RAM_ON, SK_POS2); /* enable RAM */ - } - -#ifdef SK_DEBUG - SK_print_pos(dev, "POS registers after ROM, RAM config"); -#endif - - board = (SK_RAM *) isa_bus_to_virt(rom_addr); - - /* Read in station address */ - for (i = 0, j = 0; i < ETH_ALEN; i++, j+=2) - { - dev->dev_addr[i] = readb(board->rom+j); - } - - /* Check for manufacturer code */ - if (!(dev->dev_addr[0] == SK_MAC0 && - dev->dev_addr[1] == SK_MAC1 && - dev->dev_addr[2] == SK_MAC2) ) - { - PRINTK(("## %s: We did not find SK_G16 at RAM location.\n", - SK_NAME)); - return -ENODEV; /* NO SK_G16 found */ - } - - printk("%s: %s found at %#3x, HW addr: %#04x:%02x:%02x:%02x:%02x:%02x\n", - dev->name, - "Schneider & Koch Netcard", - (unsigned int) dev->base_addr, - dev->dev_addr[0], - dev->dev_addr[1], - dev->dev_addr[2], - dev->dev_addr[3], - dev->dev_addr[4], - dev->dev_addr[5]); - - memset((char *) dev->priv, 0, sizeof(struct priv)); /* clear memory */ - - /* Assign our Device Driver functions */ - - dev->open = SK_open; - dev->stop = SK_close; - dev->hard_start_xmit = SK_send_packet; - dev->get_stats = SK_get_stats; - dev->set_multicast_list = set_multicast_list; - dev->tx_timeout = SK_timeout; - dev->watchdog_timeo = HZ/7; - - - dev->flags &= ~IFF_MULTICAST; - - /* Initialize private structure */ - - p->ram = (struct SK_ram *) rom_addr; /* Set dual ported RAM addr */ - p->tmdhead = &(p->ram)->tmde[0]; /* Set TMD head */ - p->rmdhead = &(p->ram)->rmde[0]; /* Set RMD head */ - - /* Initialize buffer pointers */ - - for (i = 0; i < TMDNUM; i++) - { - p->tmdbufs[i] = &(p->ram)->tmdbuf[i]; - } - - for (i = 0; i < RMDNUM; i++) - { - p->rmdbufs[i] = &(p->ram)->rmdbuf[i]; - } - -#ifdef SK_DEBUG - SK_print_pos(dev, "End of SK_probe"); - SK_print_ram(dev); -#endif - return 0; /* Initialization done */ -} /* End of SK_probe() */ - - -/*- - * Function : SK_open - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/26 - * - * Description : This function is called sometimes after booting - * when ifconfig program is run. - * - * This function requests an IRQ, sets the correct - * IRQ in the card. Then calls SK_lance_init() to - * init and start the LANCE chip. Then if everything is - * ok returns with 0 (OK), which means SK_G16 is now - * opened and operational. - * - * (Called by dev_open() /net/inet/dev.c) - * - * Parameters : I : struct net_device *dev - SK_G16 device structure - * Return Value : 0 - Device opened - * Errors : -EAGAIN - Open failed - * Side Effects : None - * Update History : - * YY/MM/DD uid Description --*/ - -static int SK_open(struct net_device *dev) -{ - int i = 0; - int irqval = 0; - int ioaddr = dev->base_addr; - - int irqtab[] = SK_IRQS; - - struct priv *p = netdev_priv(dev); - - PRINTK(("## %s: At beginning of SK_open(). CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - if (dev->irq == 0) /* Autoirq */ - { - i = 0; - - /* - * Check if one IRQ out of SK_IRQS is free and install - * interrupt handler. - * Most done by request_irq(). - * irqval: 0 - interrupt handler installed for IRQ irqtab[i] - * -EBUSY - interrupt busy - * -EINVAL - irq > 15 or handler = NULL - */ - - do - { - irqval = request_irq(irqtab[i], &SK_interrupt, 0, "sk_g16", dev); - i++; - } while (irqval && irqtab[i]); - - if (irqval) /* We tried every possible IRQ but no success */ - { - printk("%s: unable to get an IRQ\n", dev->name); - return -EAGAIN; - } - - dev->irq = irqtab[--i]; - - outb(i<<2, SK_POS4); /* Set Card on probed IRQ */ - - } - else if (dev->irq == 2) /* IRQ2 is always IRQ9 */ - { - if (request_irq(9, &SK_interrupt, 0, "sk_g16", dev)) - { - printk("%s: unable to get IRQ 9\n", dev->name); - return -EAGAIN; - } - dev->irq = 9; - - /* - * Now we set card on IRQ2. - * This can be confusing, but remember that IRQ2 on the network - * card is in reality IRQ9 - */ - outb(0x08, SK_POS4); /* set card to IRQ2 */ - - } - else /* Check IRQ as defined in Space.c */ - { - int i = 0; - - /* check if IRQ free and valid. Then install Interrupt handler */ - - if (request_irq(dev->irq, &SK_interrupt, 0, "sk_g16", dev)) - { - printk("%s: unable to get selected IRQ\n", dev->name); - return -EAGAIN; - } - - switch(dev->irq) - { - case 3: i = 0; - break; - case 5: i = 1; - break; - case 2: i = 2; - break; - case 11:i = 3; - break; - default: - printk("%s: Preselected IRQ %d is invalid for %s boards", - dev->name, - dev->irq, - SK_NAME); - return -EAGAIN; - } - - outb(i<<2, SK_POS4); /* Set IRQ on card */ - } - - printk("%s: Schneider & Koch G16 at %#3x, IRQ %d, shared mem at %#08x\n", - dev->name, (unsigned int)dev->base_addr, - (int) dev->irq, (unsigned int) p->ram); - - if (!(i = SK_lance_init(dev, 0))) /* LANCE init OK? */ - { - netif_start_queue(dev); - -#ifdef SK_DEBUG - - /* - * This debug block tries to stop LANCE, - * reinit LANCE with transmitter and receiver disabled, - * then stop again and reinit with NORMAL_MODE - */ - - printk("## %s: After lance init. CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0)); - SK_write_reg(CSR0, CSR0_STOP); - printk("## %s: LANCE stopped. CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0)); - SK_lance_init(dev, MODE_DTX | MODE_DRX); - printk("## %s: Reinit with DTX + DRX off. CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0)); - SK_write_reg(CSR0, CSR0_STOP); - printk("## %s: LANCE stopped. CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0)); - SK_lance_init(dev, MODE_NORMAL); - printk("## %s: LANCE back to normal mode. CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0)); - SK_print_pos(dev, "POS regs before returning OK"); - -#endif /* SK_DEBUG */ - - return 0; /* SK_open() is successful */ - } - else /* LANCE init failed */ - { - - PRINTK(("## %s: LANCE init failed: CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - return -EAGAIN; - } - -} /* End of SK_open() */ - - -/*- - * Function : SK_lance_init - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/26 - * - * Description : Reset LANCE chip, fill RMD, TMD structures with - * start values and Start LANCE. - * - * Parameters : I : struct net_device *dev - SK_G16 device structure - * I : int mode - put LANCE into "mode" see data-sheet for - * more info. - * Return Value : 0 - Init done - * Errors : -1 - Init failed - * Update History : - * YY/MM/DD uid Description --*/ - -static int SK_lance_init(struct net_device *dev, unsigned short mode) -{ - int i; - unsigned long flags; - struct priv *p = netdev_priv(dev); - struct tmd *tmdp; - struct rmd *rmdp; - - PRINTK(("## %s: At beginning of LANCE init. CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - /* Reset LANCE */ - SK_reset_board(); - - /* Initialize TMD's with start values */ - p->tmdnum = 0; /* First descriptor for transmitting */ - p->tmdlast = 0; /* First descriptor for reading stats */ - - for (i = 0; i < TMDNUM; i++) /* Init all TMD's */ - { - tmdp = p->tmdhead + i; - - writel((unsigned long) p->tmdbufs[i], tmdp->u.buffer); /* assign buffer */ - - /* Mark TMD as start and end of packet */ - writeb(TX_STP | TX_ENP, &tmdp->u.s.status); - } - - - /* Initialize RMD's with start values */ - - p->rmdnum = 0; /* First RMD which will be used */ - - for (i = 0; i < RMDNUM; i++) /* Init all RMD's */ - { - rmdp = p->rmdhead + i; - - - writel((unsigned long) p->rmdbufs[i], rmdp->u.buffer); /* assign buffer */ - - /* - * LANCE must be owner at beginning so that he can fill in - * receiving packets, set status and release RMD - */ - - writeb(RX_OWN, &rmdp->u.s.status); - - writew(-PKT_BUF_SZ, &rmdp->blen); /* Buffer Size (two's complement) */ - - writeb(0, &rmdp->mlen); /* init message length */ - - } - - /* Fill LANCE Initialize Block */ - - writew(mode, (&((p->ram)->ib.mode))); /* Set operation mode */ - - for (i = 0; i < ETH_ALEN; i++) /* Set physical address */ - { - writeb(dev->dev_addr[i], (&((p->ram)->ib.paddr[i]))); - } - - for (i = 0; i < 8; i++) /* Set multicast, logical address */ - { - writeb(0, (&((p->ram)->ib.laddr[i]))); /* We do not use logical addressing */ - } - - /* Set ring descriptor pointers and set number of descriptors */ - - writel((int)p->rmdhead | RMDNUMMASK, (&((p->ram)->ib.rdrp))); - writel((int)p->tmdhead | TMDNUMMASK, (&((p->ram)->ib.tdrp))); - - /* Prepare LANCE Control and Status Registers */ - - spin_lock_irqsave(&SK_lock, flags); - - SK_write_reg(CSR3, CSR3_ACON); /* Ale Control !!!THIS MUST BE SET!!!! */ - - /* - * LANCE addresses the RAM from 0x0000 to 0x3fbf and has no access to - * PC Memory locations. - * - * In structure SK_ram is defined that the first thing in ram - * is the initialization block. So his address is for LANCE always - * 0x0000 - * - * CSR1 contains low order bits 15:0 of initialization block address - * CSR2 is built of: - * 7:0 High order bits 23:16 of initialization block address - * 15:8 reserved, must be 0 - */ - - /* Set initialization block address (must be on word boundary) */ - SK_write_reg(CSR1, 0); /* Set low order bits 15:0 */ - SK_write_reg(CSR2, 0); /* Set high order bits 23:16 */ - - - PRINTK(("## %s: After setting CSR1-3. CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - /* Initialize LANCE */ - - /* - * INIT = Initialize, when set, causes the LANCE to begin the - * initialization procedure and access the Init Block. - */ - - SK_write_reg(CSR0, CSR0_INIT); - - spin_unlock_irqrestore(&SK_lock, flags); - - /* Wait until LANCE finished initialization */ - - SK_set_RAP(CSR0); /* Register Address Pointer to CSR0 */ - - for (i = 0; (i < 100) && !(SK_rread_reg() & CSR0_IDON); i++) - ; /* Wait until init done or go ahead if problems (i>=100) */ - - if (i >= 100) /* Something is wrong ! */ - { - printk("%s: can't init am7990, status: %04x " - "init_block: %#08x\n", - dev->name, (int) SK_read_reg(CSR0), - (unsigned int) &(p->ram)->ib); - -#ifdef SK_DEBUG - SK_print_pos(dev, "LANCE INIT failed"); - SK_print_dev(dev,"Device Structure:"); -#endif - - return -1; /* LANCE init failed */ - } - - PRINTK(("## %s: init done after %d ticks\n", SK_NAME, i)); - - /* Clear Initialize done, enable Interrupts, start LANCE */ - - SK_write_reg(CSR0, CSR0_IDON | CSR0_INEA | CSR0_STRT); - - PRINTK(("## %s: LANCE started. CSR0: %#06x\n", SK_NAME, - SK_read_reg(CSR0))); - - return 0; /* LANCE is up and running */ - -} /* End of SK_lance_init() */ - - - -/*- - * Function : SK_send_packet - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/27 - * - * Description : Writes an socket buffer into a transmit descriptor - * and starts transmission. - * - * Parameters : I : struct sk_buff *skb - packet to transfer - * I : struct net_device *dev - SK_G16 device structure - * Return Value : 0 - OK - * 1 - Could not transmit (dev_queue_xmit will queue it) - * and try to sent it later - * Globals : None - * Side Effects : None - * Update History : - * YY/MM/DD uid Description --*/ - -static void SK_timeout(struct net_device *dev) -{ - printk(KERN_WARNING "%s: xmitter timed out, try to restart!\n", dev->name); - SK_lance_init(dev, MODE_NORMAL); /* Reinit LANCE */ - netif_wake_queue(dev); /* Clear Transmitter flag */ - dev->trans_start = jiffies; /* Mark Start of transmission */ -} - -static int SK_send_packet(struct sk_buff *skb, struct net_device *dev) -{ - struct priv *p = netdev_priv(dev); - struct tmd *tmdp; - static char pad[64]; - - PRINTK2(("## %s: SK_send_packet() called, CSR0 %#04x.\n", - SK_NAME, SK_read_reg(CSR0))); - - - /* - * Block a timer-based transmit from overlapping. - * This means check if we are already in. - */ - - netif_stop_queue (dev); - - { - - /* Evaluate Packet length */ - short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; - - tmdp = p->tmdhead + p->tmdnum; /* Which descriptor for transmitting */ - - /* Fill in Transmit Message Descriptor */ - - /* Copy data into dual ported ram */ - - memcpy_toio((tmdp->u.buffer & 0x00ffffff), skb->data, skb->len); - if (len != skb->len) - memcpy_toio((tmdp->u.buffer & 0x00ffffff) + skb->len, pad, len-skb->len); - - writew(-len, &tmdp->blen); /* set length to transmit */ - - /* - * Packet start and end is always set because we use the maximum - * packet length as buffer length. - * Relinquish ownership to LANCE - */ - - writeb(TX_OWN | TX_STP | TX_ENP, &tmdp->u.s.status); - - /* Start Demand Transmission */ - SK_write_reg(CSR0, CSR0_TDMD | CSR0_INEA); - - dev->trans_start = jiffies; /* Mark start of transmission */ - - /* Set pointer to next transmit buffer */ - p->tmdnum++; - p->tmdnum &= TMDNUM-1; - - /* Do we own the next transmit buffer ? */ - if (! (readb(&((p->tmdhead + p->tmdnum)->u.s.status)) & TX_OWN) ) - { - /* - * We own next buffer and are ready to transmit, so - * clear busy flag - */ - netif_start_queue(dev); - } - - p->stats.tx_bytes += skb->len; - - } - - dev_kfree_skb(skb); - return 0; -} /* End of SK_send_packet */ - - -/*- - * Function : SK_interrupt - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/27 - * - * Description : SK_G16 interrupt handler which checks for LANCE - * Errors, handles transmit and receive interrupts - * - * Parameters : I : int irq, void *dev_id, struct pt_regs * regs - - * Return Value : None - * Errors : None - * Globals : None - * Side Effects : None - * Update History : - * YY/MM/DD uid Description --*/ - -static irqreturn_t SK_interrupt(int irq, void *dev_id, struct pt_regs * regs) -{ - int csr0; - struct net_device *dev = dev_id; - struct priv *p = netdev_priv(dev); - - - PRINTK2(("## %s: SK_interrupt(). status: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - if (dev == NULL) - { - printk("SK_interrupt(): IRQ %d for unknown device.\n", irq); - } - - spin_lock (&SK_lock); - - csr0 = SK_read_reg(CSR0); /* store register for checking */ - - /* - * Acknowledge all of the current interrupt sources, disable - * Interrupts (INEA = 0) - */ - - SK_write_reg(CSR0, csr0 & CSR0_CLRALL); - - if (csr0 & CSR0_ERR) /* LANCE Error */ - { - printk("%s: error: %04x\n", dev->name, csr0); - - if (csr0 & CSR0_MISS) /* No place to store packet ? */ - { - p->stats.rx_dropped++; - } - } - - if (csr0 & CSR0_RINT) /* Receive Interrupt (packet arrived) */ - { - SK_rxintr(dev); - } - - if (csr0 & CSR0_TINT) /* Transmit interrupt (packet sent) */ - { - SK_txintr(dev); - } - - SK_write_reg(CSR0, CSR0_INEA); /* Enable Interrupts */ - - spin_unlock (&SK_lock); - return IRQ_HANDLED; -} /* End of SK_interrupt() */ - - -/*- - * Function : SK_txintr - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/27 - * - * Description : After sending a packet we check status, update - * statistics and relinquish ownership of transmit - * descriptor ring. - * - * Parameters : I : struct net_device *dev - SK_G16 device structure - * Return Value : None - * Errors : None - * Globals : None - * Update History : - * YY/MM/DD uid Description --*/ - -static void SK_txintr(struct net_device *dev) -{ - int tmdstat; - struct tmd *tmdp; - struct priv *p = netdev_priv(dev); - - - PRINTK2(("## %s: SK_txintr() status: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - tmdp = p->tmdhead + p->tmdlast; /* Which buffer we sent at last ? */ - - /* Set next buffer */ - p->tmdlast++; - p->tmdlast &= TMDNUM-1; - - tmdstat = readb(&tmdp->u.s.status); - - /* - * We check status of transmitted packet. - * see LANCE data-sheet for error explanation - */ - if (tmdstat & TX_ERR) /* Error occurred */ - { - int stat2 = readw(&tmdp->status2); - - printk("%s: TX error: %04x %04x\n", dev->name, tmdstat, stat2); - - if (stat2 & TX_TDR) /* TDR problems? */ - { - printk("%s: tdr-problems \n", dev->name); - } - - if (stat2 & TX_RTRY) /* Failed in 16 attempts to transmit ? */ - p->stats.tx_aborted_errors++; - if (stat2 & TX_LCOL) /* Late collision ? */ - p->stats.tx_window_errors++; - if (stat2 & TX_LCAR) /* Loss of Carrier ? */ - p->stats.tx_carrier_errors++; - if (stat2 & TX_UFLO) /* Underflow error ? */ - { - p->stats.tx_fifo_errors++; - - /* - * If UFLO error occurs it will turn transmitter of. - * So we must reinit LANCE - */ - - SK_lance_init(dev, MODE_NORMAL); - } - - p->stats.tx_errors++; - - writew(0, &tmdp->status2); /* Clear error flags */ - } - else if (tmdstat & TX_MORE) /* Collisions occurred ? */ - { - /* - * Here I have a problem. - * I only know that there must be one or up to 15 collisions. - * That's why TX_MORE is set, because after 16 attempts TX_RTRY - * will be set which means couldn't send packet aborted transfer. - * - * First I did not have this in but then I thought at minimum - * we see that something was not ok. - * If anyone knows something better than this to handle this - * please report it. - */ - - p->stats.collisions++; - } - else /* Packet sent without any problems */ - { - p->stats.tx_packets++; - } - - /* - * We mark transmitter not busy anymore, because now we have a free - * transmit descriptor which can be filled by SK_send_packet and - * afterwards sent by the LANCE - * - * The function which do handle slow IRQ parts is do_bottom_half() - * which runs at normal kernel priority, that means all interrupt are - * enabled. (see kernel/irq.c) - * - * net_bh does something like this: - * - check if already in net_bh - * - try to transmit something from the send queue - * - if something is in the receive queue send it up to higher - * levels if it is a known protocol - * - try to transmit something from the send queue - */ - - netif_wake_queue(dev); - -} /* End of SK_txintr() */ - - -/*- - * Function : SK_rxintr - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/27 - * - * Description : Buffer sent, check for errors, relinquish ownership - * of the receive message descriptor. - * - * Parameters : I : SK_G16 device structure - * Return Value : None - * Globals : None - * Update History : - * YY/MM/DD uid Description --*/ - -static void SK_rxintr(struct net_device *dev) -{ - - struct rmd *rmdp; - int rmdstat; - struct priv *p = netdev_priv(dev); - - PRINTK2(("## %s: SK_rxintr(). CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - rmdp = p->rmdhead + p->rmdnum; - - /* As long as we own the next entry, check status and send - * it up to higher layer - */ - - while (!( (rmdstat = readb(&rmdp->u.s.status)) & RX_OWN)) - { - /* - * Start and end of packet must be set, because we use - * the ethernet maximum packet length (1518) as buffer size. - * - * Because our buffers are at maximum OFLO and BUFF errors are - * not to be concerned (see Data sheet) - */ - - if ((rmdstat & (RX_STP | RX_ENP)) != (RX_STP | RX_ENP)) - { - /* Start of a frame > 1518 Bytes ? */ - - if (rmdstat & RX_STP) - { - p->stats.rx_errors++; /* bad packet received */ - p->stats.rx_length_errors++; /* packet too long */ - - printk("%s: packet too long\n", dev->name); - } - - /* - * All other packets will be ignored until a new frame with - * start (RX_STP) set follows. - * - * What we do is just give descriptor free for new incoming - * packets. - */ - - writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */ - - } - else if (rmdstat & RX_ERR) /* Receive Error ? */ - { - printk("%s: RX error: %04x\n", dev->name, (int) rmdstat); - - p->stats.rx_errors++; - - if (rmdstat & RX_FRAM) p->stats.rx_frame_errors++; - if (rmdstat & RX_CRC) p->stats.rx_crc_errors++; - - writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */ - - } - else /* We have a packet which can be queued for the upper layers */ - { - - int len = readw(&rmdp->mlen) & 0x0fff; /* extract message length from receive buffer */ - struct sk_buff *skb; - - skb = dev_alloc_skb(len+2); /* allocate socket buffer */ - - if (skb == NULL) /* Could not get mem ? */ - { - - /* - * Couldn't allocate sk_buffer so we give descriptor back - * to Lance, update statistics and go ahead. - */ - - writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */ - printk("%s: Couldn't allocate sk_buff, deferring packet.\n", - dev->name); - p->stats.rx_dropped++; - - break; /* Jump out */ - } - - /* Prepare sk_buff to queue for upper layers */ - - skb->dev = dev; - skb_reserve(skb,2); /* Align IP header on 16 byte boundary */ - - /* - * Copy data out of our receive descriptor into sk_buff. - * - * (rmdp->u.buffer & 0x00ffffff) -> get address of buffer and - * ignore status fields) - */ - - memcpy_fromio(skb_put(skb,len), (rmdp->u.buffer & 0x00ffffff), len); - - - /* - * Notify the upper protocol layers that there is another packet - * to handle - * - * netif_rx() always succeeds. see /net/inet/dev.c for more. - */ - - skb->protocol=eth_type_trans(skb,dev); - netif_rx(skb); /* queue packet and mark it for processing */ - - /* - * Packet is queued and marked for processing so we - * free our descriptor and update statistics - */ - - writeb(RX_OWN, &rmdp->u.s.status); - dev->last_rx = jiffies; - p->stats.rx_packets++; - p->stats.rx_bytes += len; - - - p->rmdnum++; - p->rmdnum %= RMDNUM; - - rmdp = p->rmdhead + p->rmdnum; - } - } -} /* End of SK_rxintr() */ - - -/*- - * Function : SK_close - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/26 - * - * Description : close gets called from dev_close() and should - * deinstall the card (free_irq, mem etc). - * - * Parameters : I : struct net_device *dev - our device structure - * Return Value : 0 - closed device driver - * Errors : None - * Globals : None - * Update History : - * YY/MM/DD uid Description --*/ - -/* I have tried to set BOOT_ROM on and RAM off but then, after a 'ifconfig - * down' the system stops. So I don't shut set card to init state. - */ - -static int SK_close(struct net_device *dev) -{ - - PRINTK(("## %s: SK_close(). CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - netif_stop_queue(dev); /* Transmitter busy */ - - printk("%s: Shutting %s down CSR0 %#06x\n", dev->name, SK_NAME, - (int) SK_read_reg(CSR0)); - - SK_write_reg(CSR0, CSR0_STOP); /* STOP the LANCE */ - - free_irq(dev->irq, dev); /* Free IRQ */ - - return 0; /* always succeed */ - -} /* End of SK_close() */ - - -/*- - * Function : SK_get_stats - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/26 - * - * Description : Return current status structure to upper layers. - * It is called by sprintf_stats (dev.c). - * - * Parameters : I : struct net_device *dev - our device structure - * Return Value : struct net_device_stats * - our current statistics - * Errors : None - * Side Effects : None - * Update History : - * YY/MM/DD uid Description --*/ - -static struct net_device_stats *SK_get_stats(struct net_device *dev) -{ - - struct priv *p = netdev_priv(dev); - - PRINTK(("## %s: SK_get_stats(). CSR0: %#06x\n", - SK_NAME, SK_read_reg(CSR0))); - - return &p->stats; /* Return Device status */ - -} /* End of SK_get_stats() */ - - -/*- - * Function : set_multicast_list - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/26 - * - * Description : This function gets called when a program performs - * a SIOCSIFFLAGS call. Ifconfig does this if you call - * 'ifconfig [-]allmulti' which enables or disables the - * Promiscuous mode. - * Promiscuous mode is when the Network card accepts all - * packets, not only the packets which match our MAC - * Address. It is useful for writing a network monitor, - * but it is also a security problem. You have to remember - * that all information on the net is not encrypted. - * - * Parameters : I : struct net_device *dev - SK_G16 device Structure - * Return Value : None - * Errors : None - * Globals : None - * Update History : - * YY/MM/DD uid Description - * 95/10/18 ACox New multicast calling scheme --*/ - - -/* Set or clear the multicast filter for SK_G16. - */ - -static void set_multicast_list(struct net_device *dev) -{ - - if (dev->flags&IFF_PROMISC) - { - /* Reinitialize LANCE with MODE_PROM set */ - SK_lance_init(dev, MODE_PROM); - } - else if (dev->mc_count==0 && !(dev->flags&IFF_ALLMULTI)) - { - /* Reinitialize LANCE without MODE_PROM */ - SK_lance_init(dev, MODE_NORMAL); - } - else - { - /* Multicast with logical address filter on */ - /* Reinitialize LANCE without MODE_PROM */ - SK_lance_init(dev, MODE_NORMAL); - - /* Not implemented yet. */ - } -} /* End of set_multicast_list() */ - - - -/*- - * Function : SK_rom_addr - * Author : Patrick J.D. Weichmann - * Date Created : 94/06/01 - * - * Description : Try to find a Boot_ROM at all possible locations - * - * Parameters : None - * Return Value : Address where Boot_ROM is - * Errors : 0 - Did not find Boot_ROM - * Globals : None - * Update History : - * YY/MM/DD uid Description --*/ - -unsigned int __init SK_rom_addr(void) -{ - int i,j; - int rom_found = 0; - unsigned int rom_location[] = SK_BOOT_ROM_LOCATIONS; - unsigned char rom_id[] = SK_BOOT_ROM_ID; - unsigned char test_byte; - - /* Autodetect Boot_ROM */ - PRINTK(("## %s: Autodetection of Boot_ROM\n", SK_NAME)); - - for (i = 0; (rom_location[i] != 0) && (rom_found == 0); i++) - { - - PRINTK(("## Trying ROM location %#08x", rom_location[i])); - - rom_found = 1; - for (j = 0; j < 6; j++) - { - test_byte = readb(rom_location[i]+j); - PRINTK((" %02x ", *test_byte)); - - if(test_byte != rom_id[j]) - { - rom_found = 0; - } - } - PRINTK(("\n")); - } - - if (rom_found == 1) - { - PRINTK(("## %s: Boot_ROM found at %#08x\n", - SK_NAME, rom_location[(i-1)])); - - return (rom_location[--i]); - } - else - { - PRINTK(("%s: No Boot_ROM found\n", SK_NAME)); - return 0; - } -} /* End of SK_rom_addr() */ - - - -/* LANCE access functions - * - * ! CSR1-3 can only be accessed when in CSR0 the STOP bit is set ! - */ - - -/*- - * Function : SK_reset_board - * - * Author : Patrick J.D. Weichmann - * - * Date Created : 94/05/25 - * - * Description : This function resets SK_G16 and all components, but - * POS registers are not changed - * - * Parameters : None - * Return Value : None - * Errors : None - * Globals : SK_RAM *board - SK_RAM structure pointer - * - * Update History : - * YY/MM/DD uid Description --*/ - -void SK_reset_board(void) -{ - writeb(0x00, SK_PORT); /* Reset active */ - mdelay(5); /* Delay min 5ms */ - writeb(SK_RESET, SK_PORT); /* Set back to normal operation */ - -} /* End of SK_reset_board() */ - - -/*- - * Function : SK_set_RAP - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/25 - * - * Description : Set LANCE Register Address Port to register - * for later data transfer. - * - * Parameters : I : reg_number - which CSR to read/write from/to - * Return Value : None - * Errors : None - * Globals : SK_RAM *board - SK_RAM structure pointer - * Update History : - * YY/MM/DD uid Description --*/ - -void SK_set_RAP(int reg_number) -{ - writew(reg_number, SK_IOREG); - writeb(SK_RESET | SK_RAP | SK_WREG, SK_PORT); - writeb(SK_DOIO, SK_IOCOM); - - while (readb(SK_PORT) & SK_IORUN) - barrier(); -} /* End of SK_set_RAP() */ - - -/*- - * Function : SK_read_reg - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/25 - * - * Description : Set RAP and read data from a LANCE CSR register - * - * Parameters : I : reg_number - which CSR to read from - * Return Value : Register contents - * Errors : None - * Globals : SK_RAM *board - SK_RAM structure pointer - * Update History : - * YY/MM/DD uid Description --*/ - -int SK_read_reg(int reg_number) -{ - SK_set_RAP(reg_number); - - writeb(SK_RESET | SK_RDATA | SK_RREG, SK_PORT); - writeb(SK_DOIO, SK_IOCOM); - - while (readb(SK_PORT) & SK_IORUN) - barrier(); - return (readw(SK_IOREG)); - -} /* End of SK_read_reg() */ - - -/*- - * Function : SK_rread_reg - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/28 - * - * Description : Read data from preseted register. - * This function requires that you know which - * Register is actually set. Be aware that CSR1-3 - * can only be accessed when in CSR0 STOP is set. - * - * Return Value : Register contents - * Errors : None - * Globals : SK_RAM *board - SK_RAM structure pointer - * Update History : - * YY/MM/DD uid Description --*/ - -int SK_rread_reg(void) -{ - writeb(SK_RESET | SK_RDATA | SK_RREG, SK_PORT); - - writeb(SK_DOIO, SK_IOCOM); - - while (readb(SK_PORT) & SK_IORUN) - barrier(); - return (readw(SK_IOREG)); - -} /* End of SK_rread_reg() */ - - -/*- - * Function : SK_write_reg - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/25 - * - * Description : This function sets the RAP then fills in the - * LANCE I/O Reg and starts Transfer to LANCE. - * It waits until transfer has ended which is max. 7 ms - * and then it returns. - * - * Parameters : I : reg_number - which CSR to write to - * I : value - what value to fill into register - * Return Value : None - * Errors : None - * Globals : SK_RAM *board - SK_RAM structure pointer - * Update History : - * YY/MM/DD uid Description --*/ - -void SK_write_reg(int reg_number, int value) -{ - SK_set_RAP(reg_number); - - writew(value, SK_IOREG); - writeb(SK_RESET | SK_RDATA | SK_WREG, SK_PORT); - writeb(SK_DOIO, SK_IOCOM); - - while (readb(SK_PORT) & SK_IORUN) - barrier(); -} /* End of SK_write_reg */ - - - -/* - * Debugging functions - * ------------------- - */ - -/*- - * Function : SK_print_pos - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/25 - * - * Description : This function prints out the 4 POS (Programmable - * Option Select) Registers. Used mainly to debug operation. - * - * Parameters : I : struct net_device *dev - SK_G16 device structure - * I : char * - Text which will be printed as title - * Return Value : None - * Errors : None - * Update History : - * YY/MM/DD uid Description --*/ - -void SK_print_pos(struct net_device *dev, char *text) -{ - int ioaddr = dev->base_addr; - - unsigned char pos0 = inb(SK_POS0), - pos1 = inb(SK_POS1), - pos2 = inb(SK_POS2), - pos3 = inb(SK_POS3), - pos4 = inb(SK_POS4); - - - printk("## %s: %s.\n" - "## pos0=%#4x pos1=%#4x pos2=%#04x pos3=%#08x pos4=%#04x\n", - SK_NAME, text, pos0, pos1, pos2, (pos3<<14), pos4); - -} /* End of SK_print_pos() */ - - - -/*- - * Function : SK_print_dev - * Author : Patrick J.D. Weichmann - * Date Created : 94/05/25 - * - * Description : This function simply prints out the important fields - * of the device structure. - * - * Parameters : I : struct net_device *dev - SK_G16 device structure - * I : char *text - Title for printing - * Return Value : None - * Errors : None - * Update History : - * YY/MM/DD uid Description --*/ - -void SK_print_dev(struct net_device *dev, char *text) -{ - if (dev == NULL) - { - printk("## %s: Device Structure. %s\n", SK_NAME, text); - printk("## DEVICE == NULL\n"); - } - else - { - printk("## %s: Device Structure. %s\n", SK_NAME, text); - printk("## Device Name: %s Base Address: %#06lx IRQ: %d\n", - dev->name, dev->base_addr, dev->irq); - - printk("## next device: %#08x init function: %#08x\n", - (int) dev->next, (int) dev->init); - } - -} /* End of SK_print_dev() */ - - - -/*- - * Function : SK_print_ram - * Author : Patrick J.D. Weichmann - * Date Created : 94/06/02 - * - * Description : This function is used to check how are things set up - * in the 16KB RAM. Also the pointers to the receive and - * transmit descriptor rings and rx and tx buffers locations. - * It contains a minor bug in printing, but has no effect to the values - * only newlines are not correct. - * - * Parameters : I : struct net_device *dev - SK_G16 device structure - * Return Value : None - * Errors : None - * Globals : None - * Update History : - * YY/MM/DD uid Description --*/ - -void __init SK_print_ram(struct net_device *dev) -{ - - int i; - struct priv *p = netdev_priv(dev); - - printk("## %s: RAM Details.\n" - "## RAM at %#08x tmdhead: %#08x rmdhead: %#08x initblock: %#08x\n", - SK_NAME, - (unsigned int) p->ram, - (unsigned int) p->tmdhead, - (unsigned int) p->rmdhead, - (unsigned int) &(p->ram)->ib); - - printk("## "); - - for(i = 0; i < TMDNUM; i++) - { - if (!(i % 3)) /* Every third line do a newline */ - { - printk("\n## "); - } - printk("tmdbufs%d: %#08x ", (i+1), (int) p->tmdbufs[i]); - } - printk("## "); - - for(i = 0; i < RMDNUM; i++) - { - if (!(i % 3)) /* Every third line do a newline */ - { - printk("\n## "); - } - printk("rmdbufs%d: %#08x ", (i+1), (int) p->rmdbufs[i]); - } - printk("\n"); - -} /* End of SK_print_ram() */ - |