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1173 lines
31 KiB
1173 lines
31 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* sb1000.c: A General Instruments SB1000 driver for linux. */ |
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/* |
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Written 1998 by Franco Venturi. |
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|
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Copyright 1998 by Franco Venturi. |
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Copyright 1994,1995 by Donald Becker. |
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Copyright 1993 United States Government as represented by the |
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Director, National Security Agency. |
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|
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This driver is for the General Instruments SB1000 (internal SURFboard) |
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|
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The author may be reached as [email protected] |
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Changes: |
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|
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981115 Steven Hirsch <[email protected]> |
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|
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Linus changed the timer interface. Should work on all recent |
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development kernels. |
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|
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980608 Steven Hirsch <[email protected]> |
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|
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Small changes to make it work with 2.1.x kernels. Hopefully, |
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nothing major will change before official release of Linux 2.2. |
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|
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Merged with 2.2 - Alan Cox |
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*/ |
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|
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static char version[] = "sb1000.c:v1.1.2 6/01/98 ([email protected])\n"; |
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|
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <linux/string.h> |
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#include <linux/interrupt.h> |
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#include <linux/errno.h> |
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#include <linux/if_cablemodem.h> /* for SIOGCM/SIOSCM stuff */ |
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#include <linux/in.h> |
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#include <linux/ioport.h> |
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#include <linux/netdevice.h> |
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#include <linux/if_arp.h> |
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#include <linux/skbuff.h> |
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#include <linux/delay.h> /* for udelay() */ |
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#include <linux/etherdevice.h> |
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#include <linux/pnp.h> |
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#include <linux/init.h> |
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#include <linux/bitops.h> |
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#include <linux/gfp.h> |
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|
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#include <asm/io.h> |
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#include <asm/processor.h> |
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#include <linux/uaccess.h> |
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|
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#ifdef SB1000_DEBUG |
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static int sb1000_debug = SB1000_DEBUG; |
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#else |
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static const int sb1000_debug = 1; |
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#endif |
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|
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static const int SB1000_IO_EXTENT = 8; |
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/* SB1000 Maximum Receive Unit */ |
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static const int SB1000_MRU = 1500; /* octects */ |
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|
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#define NPIDS 4 |
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struct sb1000_private { |
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struct sk_buff *rx_skb[NPIDS]; |
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short rx_dlen[NPIDS]; |
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unsigned int rx_frames; |
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short rx_error_count; |
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short rx_error_dpc_count; |
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unsigned char rx_session_id[NPIDS]; |
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unsigned char rx_frame_id[NPIDS]; |
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unsigned char rx_pkt_type[NPIDS]; |
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}; |
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|
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/* prototypes for Linux interface */ |
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extern int sb1000_probe(struct net_device *dev); |
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static int sb1000_open(struct net_device *dev); |
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static int sb1000_dev_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); |
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static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb, |
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struct net_device *dev); |
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static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
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static int sb1000_close(struct net_device *dev); |
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|
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|
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/* SB1000 hardware routines to be used during open/configuration phases */ |
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static int card_wait_for_busy_clear(const int ioaddr[], |
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const char* name); |
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static int card_wait_for_ready(const int ioaddr[], const char* name, |
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unsigned char in[]); |
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static int card_send_command(const int ioaddr[], const char* name, |
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const unsigned char out[], unsigned char in[]); |
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|
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/* SB1000 hardware routines to be used during frame rx interrupt */ |
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static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
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static int sb1000_wait_for_ready_clear(const int ioaddr[], |
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const char* name); |
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static void sb1000_send_command(const int ioaddr[], const char* name, |
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const unsigned char out[]); |
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static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
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static void sb1000_issue_read_command(const int ioaddr[], |
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const char* name); |
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|
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/* SB1000 commands for open/configuration */ |
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static int sb1000_reset(const int ioaddr[], const char* name); |
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static int sb1000_check_CRC(const int ioaddr[], const char* name); |
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static inline int sb1000_start_get_set_command(const int ioaddr[], |
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const char* name); |
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static int sb1000_end_get_set_command(const int ioaddr[], |
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const char* name); |
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static int sb1000_activate(const int ioaddr[], const char* name); |
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static int sb1000_get_firmware_version(const int ioaddr[], |
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const char* name, unsigned char version[], int do_end); |
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static int sb1000_get_frequency(const int ioaddr[], const char* name, |
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int* frequency); |
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static int sb1000_set_frequency(const int ioaddr[], const char* name, |
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int frequency); |
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static int sb1000_get_PIDs(const int ioaddr[], const char* name, |
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short PID[]); |
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static int sb1000_set_PIDs(const int ioaddr[], const char* name, |
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const short PID[]); |
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|
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/* SB1000 commands for frame rx interrupt */ |
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static int sb1000_rx(struct net_device *dev); |
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static void sb1000_error_dpc(struct net_device *dev); |
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|
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static const struct pnp_device_id sb1000_pnp_ids[] = { |
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{ "GIC1000", 0 }, |
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{ "", 0 } |
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}; |
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MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); |
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|
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static const struct net_device_ops sb1000_netdev_ops = { |
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.ndo_open = sb1000_open, |
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.ndo_start_xmit = sb1000_start_xmit, |
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.ndo_do_ioctl = sb1000_dev_ioctl, |
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.ndo_stop = sb1000_close, |
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.ndo_set_mac_address = eth_mac_addr, |
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.ndo_validate_addr = eth_validate_addr, |
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}; |
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static int |
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sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) |
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{ |
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struct net_device *dev; |
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unsigned short ioaddr[2], irq; |
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unsigned int serial_number; |
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int error = -ENODEV; |
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if (pnp_device_attach(pdev) < 0) |
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return -ENODEV; |
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if (pnp_activate_dev(pdev) < 0) |
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goto out_detach; |
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if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) |
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goto out_disable; |
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if (!pnp_irq_valid(pdev, 0)) |
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goto out_disable; |
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serial_number = pdev->card->serial; |
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ioaddr[0] = pnp_port_start(pdev, 0); |
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ioaddr[1] = pnp_port_start(pdev, 0); |
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irq = pnp_irq(pdev, 0); |
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if (!request_region(ioaddr[0], 16, "sb1000")) |
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goto out_disable; |
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if (!request_region(ioaddr[1], 16, "sb1000")) |
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goto out_release_region0; |
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dev = alloc_etherdev(sizeof(struct sb1000_private)); |
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if (!dev) { |
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error = -ENOMEM; |
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goto out_release_regions; |
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} |
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dev->base_addr = ioaddr[0]; |
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/* mem_start holds the second I/O address */ |
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dev->mem_start = ioaddr[1]; |
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dev->irq = irq; |
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if (sb1000_debug > 0) |
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printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " |
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"S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, |
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dev->mem_start, serial_number, dev->irq); |
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|
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/* |
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* The SB1000 is an rx-only cable modem device. The uplink is a modem |
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* and we do not want to arp on it. |
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*/ |
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dev->flags = IFF_POINTOPOINT|IFF_NOARP; |
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SET_NETDEV_DEV(dev, &pdev->dev); |
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if (sb1000_debug > 0) |
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printk(KERN_NOTICE "%s", version); |
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dev->netdev_ops = &sb1000_netdev_ops; |
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/* hardware address is 0:0:serial_number */ |
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dev->dev_addr[2] = serial_number >> 24 & 0xff; |
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dev->dev_addr[3] = serial_number >> 16 & 0xff; |
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dev->dev_addr[4] = serial_number >> 8 & 0xff; |
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dev->dev_addr[5] = serial_number >> 0 & 0xff; |
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pnp_set_drvdata(pdev, dev); |
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error = register_netdev(dev); |
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if (error) |
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goto out_free_netdev; |
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return 0; |
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out_free_netdev: |
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free_netdev(dev); |
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out_release_regions: |
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release_region(ioaddr[1], 16); |
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out_release_region0: |
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release_region(ioaddr[0], 16); |
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out_disable: |
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pnp_disable_dev(pdev); |
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out_detach: |
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pnp_device_detach(pdev); |
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return error; |
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} |
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static void |
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sb1000_remove_one(struct pnp_dev *pdev) |
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{ |
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struct net_device *dev = pnp_get_drvdata(pdev); |
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unregister_netdev(dev); |
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release_region(dev->base_addr, 16); |
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release_region(dev->mem_start, 16); |
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free_netdev(dev); |
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} |
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static struct pnp_driver sb1000_driver = { |
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.name = "sb1000", |
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.id_table = sb1000_pnp_ids, |
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.probe = sb1000_probe_one, |
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.remove = sb1000_remove_one, |
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}; |
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/* |
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* SB1000 hardware routines to be used during open/configuration phases |
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*/ |
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static const int TimeOutJiffies = (875 * HZ) / 100; |
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/* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
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static int |
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card_wait_for_busy_clear(const int ioaddr[], const char* name) |
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{ |
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unsigned char a; |
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unsigned long timeout; |
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a = inb(ioaddr[0] + 7); |
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timeout = jiffies + TimeOutJiffies; |
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while (a & 0x80 || a & 0x40) { |
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/* a little sleep */ |
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yield(); |
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a = inb(ioaddr[0] + 7); |
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if (time_after_eq(jiffies, timeout)) { |
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printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", |
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name); |
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return -ETIME; |
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} |
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} |
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return 0; |
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} |
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/* Card Wait For Ready (cannot be used during an interrupt) */ |
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static int |
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card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
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{ |
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unsigned char a; |
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unsigned long timeout; |
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a = inb(ioaddr[1] + 6); |
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timeout = jiffies + TimeOutJiffies; |
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while (a & 0x80 || !(a & 0x40)) { |
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/* a little sleep */ |
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yield(); |
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a = inb(ioaddr[1] + 6); |
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if (time_after_eq(jiffies, timeout)) { |
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printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", |
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name); |
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return -ETIME; |
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} |
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} |
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in[1] = inb(ioaddr[0] + 1); |
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in[2] = inb(ioaddr[0] + 2); |
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in[3] = inb(ioaddr[0] + 3); |
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in[4] = inb(ioaddr[0] + 4); |
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in[0] = inb(ioaddr[0] + 5); |
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in[6] = inb(ioaddr[0] + 6); |
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in[5] = inb(ioaddr[1] + 6); |
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return 0; |
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} |
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/* Card Send Command (cannot be used during an interrupt) */ |
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static int |
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card_send_command(const int ioaddr[], const char* name, |
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const unsigned char out[], unsigned char in[]) |
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{ |
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int status; |
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if ((status = card_wait_for_busy_clear(ioaddr, name))) |
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return status; |
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outb(0xa0, ioaddr[0] + 6); |
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outb(out[2], ioaddr[0] + 1); |
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outb(out[3], ioaddr[0] + 2); |
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outb(out[4], ioaddr[0] + 3); |
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outb(out[5], ioaddr[0] + 4); |
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outb(out[1], ioaddr[0] + 5); |
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outb(0xa0, ioaddr[0] + 6); |
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outb(out[0], ioaddr[0] + 7); |
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if (out[0] != 0x20 && out[0] != 0x30) { |
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if ((status = card_wait_for_ready(ioaddr, name, in))) |
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return status; |
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inb(ioaddr[0] + 7); |
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if (sb1000_debug > 3) |
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printk(KERN_DEBUG "%s: card_send_command " |
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"out: %02x%02x%02x%02x%02x%02x " |
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"in: %02x%02x%02x%02x%02x%02x%02x\n", name, |
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out[0], out[1], out[2], out[3], out[4], out[5], |
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in[0], in[1], in[2], in[3], in[4], in[5], in[6]); |
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} else { |
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if (sb1000_debug > 3) |
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printk(KERN_DEBUG "%s: card_send_command " |
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"out: %02x%02x%02x%02x%02x%02x\n", name, |
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out[0], out[1], out[2], out[3], out[4], out[5]); |
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} |
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|
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if (out[1] != 0x1b) { |
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if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) |
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return -EIO; |
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} |
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return 0; |
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} |
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|
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/* |
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* SB1000 hardware routines to be used during frame rx interrupt |
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*/ |
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static const int Sb1000TimeOutJiffies = 7 * HZ; |
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|
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/* Card Wait For Ready (to be used during frame rx) */ |
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static int |
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sb1000_wait_for_ready(const int ioaddr[], const char* name) |
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{ |
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unsigned long timeout; |
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|
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timeout = jiffies + Sb1000TimeOutJiffies; |
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while (inb(ioaddr[1] + 6) & 0x80) { |
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if (time_after_eq(jiffies, timeout)) { |
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printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", |
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name); |
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return -ETIME; |
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} |
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} |
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timeout = jiffies + Sb1000TimeOutJiffies; |
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while (!(inb(ioaddr[1] + 6) & 0x40)) { |
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if (time_after_eq(jiffies, timeout)) { |
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printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", |
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name); |
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return -ETIME; |
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} |
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} |
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inb(ioaddr[0] + 7); |
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return 0; |
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} |
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/* Card Wait For Ready Clear (to be used during frame rx) */ |
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static int |
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sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
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{ |
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unsigned long timeout; |
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|
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timeout = jiffies + Sb1000TimeOutJiffies; |
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while (inb(ioaddr[1] + 6) & 0x80) { |
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if (time_after_eq(jiffies, timeout)) { |
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printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", |
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name); |
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return -ETIME; |
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} |
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} |
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timeout = jiffies + Sb1000TimeOutJiffies; |
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while (inb(ioaddr[1] + 6) & 0x40) { |
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if (time_after_eq(jiffies, timeout)) { |
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printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", |
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name); |
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return -ETIME; |
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} |
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} |
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return 0; |
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} |
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|
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/* Card Send Command (to be used during frame rx) */ |
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static void |
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sb1000_send_command(const int ioaddr[], const char* name, |
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const unsigned char out[]) |
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{ |
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outb(out[2], ioaddr[0] + 1); |
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outb(out[3], ioaddr[0] + 2); |
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outb(out[4], ioaddr[0] + 3); |
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outb(out[5], ioaddr[0] + 4); |
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outb(out[1], ioaddr[0] + 5); |
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outb(out[0], ioaddr[0] + 7); |
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if (sb1000_debug > 3) |
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printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" |
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"%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); |
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} |
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|
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/* Card Read Status (to be used during frame rx) */ |
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static void |
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sb1000_read_status(const int ioaddr[], unsigned char in[]) |
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{ |
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in[1] = inb(ioaddr[0] + 1); |
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in[2] = inb(ioaddr[0] + 2); |
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in[3] = inb(ioaddr[0] + 3); |
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in[4] = inb(ioaddr[0] + 4); |
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in[0] = inb(ioaddr[0] + 5); |
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} |
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|
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/* Issue Read Command (to be used during frame rx) */ |
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static void |
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sb1000_issue_read_command(const int ioaddr[], const char* name) |
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{ |
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static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
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|
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sb1000_wait_for_ready_clear(ioaddr, name); |
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outb(0xa0, ioaddr[0] + 6); |
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sb1000_send_command(ioaddr, name, Command0); |
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} |
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|
|
|
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/* |
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* SB1000 commands for open/configuration |
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*/ |
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/* reset SB1000 card */ |
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static int |
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sb1000_reset(const int ioaddr[], const char* name) |
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{ |
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static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
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|
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unsigned char st[7]; |
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int port, status; |
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|
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port = ioaddr[1] + 6; |
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outb(0x4, port); |
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inb(port); |
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udelay(1000); |
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outb(0x0, port); |
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inb(port); |
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ssleep(1); |
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outb(0x4, port); |
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inb(port); |
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udelay(1000); |
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outb(0x0, port); |
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inb(port); |
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udelay(0); |
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|
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if ((status = card_send_command(ioaddr, name, Command0, st))) |
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return status; |
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if (st[3] != 0xf0) |
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return -EIO; |
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return 0; |
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} |
|
|
|
/* check SB1000 firmware CRC */ |
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static int |
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sb1000_check_CRC(const int ioaddr[], const char* name) |
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{ |
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static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
|
|
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unsigned char st[7]; |
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int status; |
|
|
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/* check CRC */ |
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if ((status = card_send_command(ioaddr, name, Command0, st))) |
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return status; |
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if (st[1] != st[3] || st[2] != st[4]) |
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return -EIO; |
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return 0; |
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} |
|
|
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static inline int |
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sb1000_start_get_set_command(const int ioaddr[], const char* name) |
|
{ |
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static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
|
|
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unsigned char st[7]; |
|
|
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return card_send_command(ioaddr, name, Command0, st); |
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} |
|
|
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static int |
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sb1000_end_get_set_command(const int ioaddr[], const char* name) |
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{ |
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static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
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static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; |
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|
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unsigned char st[7]; |
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int status; |
|
|
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if ((status = card_send_command(ioaddr, name, Command0, st))) |
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return status; |
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return card_send_command(ioaddr, name, Command1, st); |
|
} |
|
|
|
static int |
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sb1000_activate(const int ioaddr[], const char* name) |
|
{ |
|
static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
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static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
|
|
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unsigned char st[7]; |
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int status; |
|
|
|
ssleep(1); |
|
status = card_send_command(ioaddr, name, Command0, st); |
|
if (status) |
|
return status; |
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status = card_send_command(ioaddr, name, Command1, st); |
|
if (status) |
|
return status; |
|
if (st[3] != 0xf1) { |
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status = sb1000_start_get_set_command(ioaddr, name); |
|
if (status) |
|
return status; |
|
return -EIO; |
|
} |
|
udelay(1000); |
|
return sb1000_start_get_set_command(ioaddr, name); |
|
} |
|
|
|
/* get SB1000 firmware version */ |
|
static int |
|
sb1000_get_firmware_version(const int ioaddr[], const char* name, |
|
unsigned char version[], int do_end) |
|
{ |
|
static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
unsigned char st[7]; |
|
int status; |
|
|
|
if ((status = sb1000_start_get_set_command(ioaddr, name))) |
|
return status; |
|
if ((status = card_send_command(ioaddr, name, Command0, st))) |
|
return status; |
|
if (st[0] != 0xa3) |
|
return -EIO; |
|
version[0] = st[1]; |
|
version[1] = st[2]; |
|
if (do_end) |
|
return sb1000_end_get_set_command(ioaddr, name); |
|
else |
|
return 0; |
|
} |
|
|
|
/* get SB1000 frequency */ |
|
static int |
|
sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) |
|
{ |
|
static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
unsigned char st[7]; |
|
int status; |
|
|
|
udelay(1000); |
|
if ((status = sb1000_start_get_set_command(ioaddr, name))) |
|
return status; |
|
if ((status = card_send_command(ioaddr, name, Command0, st))) |
|
return status; |
|
*frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; |
|
return sb1000_end_get_set_command(ioaddr, name); |
|
} |
|
|
|
/* set SB1000 frequency */ |
|
static int |
|
sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) |
|
{ |
|
unsigned char st[7]; |
|
int status; |
|
unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
const int FrequencyLowerLimit = 57000; |
|
const int FrequencyUpperLimit = 804000; |
|
|
|
if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { |
|
printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " |
|
"[%d,%d] kHz\n", name, frequency, FrequencyLowerLimit, |
|
FrequencyUpperLimit); |
|
return -EINVAL; |
|
} |
|
udelay(1000); |
|
if ((status = sb1000_start_get_set_command(ioaddr, name))) |
|
return status; |
|
Command0[5] = frequency & 0xff; |
|
frequency >>= 8; |
|
Command0[4] = frequency & 0xff; |
|
frequency >>= 8; |
|
Command0[3] = frequency & 0xff; |
|
frequency >>= 8; |
|
Command0[2] = frequency & 0xff; |
|
return card_send_command(ioaddr, name, Command0, st); |
|
} |
|
|
|
/* get SB1000 PIDs */ |
|
static int |
|
sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) |
|
{ |
|
static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; |
|
static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; |
|
static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; |
|
static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
unsigned char st[7]; |
|
int status; |
|
|
|
udelay(1000); |
|
if ((status = sb1000_start_get_set_command(ioaddr, name))) |
|
return status; |
|
|
|
if ((status = card_send_command(ioaddr, name, Command0, st))) |
|
return status; |
|
PID[0] = st[1] << 8 | st[2]; |
|
|
|
if ((status = card_send_command(ioaddr, name, Command1, st))) |
|
return status; |
|
PID[1] = st[1] << 8 | st[2]; |
|
|
|
if ((status = card_send_command(ioaddr, name, Command2, st))) |
|
return status; |
|
PID[2] = st[1] << 8 | st[2]; |
|
|
|
if ((status = card_send_command(ioaddr, name, Command3, st))) |
|
return status; |
|
PID[3] = st[1] << 8 | st[2]; |
|
|
|
return sb1000_end_get_set_command(ioaddr, name); |
|
} |
|
|
|
/* set SB1000 PIDs */ |
|
static int |
|
sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) |
|
{ |
|
static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
unsigned char st[7]; |
|
short p; |
|
int status; |
|
unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; |
|
unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; |
|
unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; |
|
unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
udelay(1000); |
|
if ((status = sb1000_start_get_set_command(ioaddr, name))) |
|
return status; |
|
|
|
p = PID[0]; |
|
Command0[3] = p & 0xff; |
|
p >>= 8; |
|
Command0[2] = p & 0xff; |
|
if ((status = card_send_command(ioaddr, name, Command0, st))) |
|
return status; |
|
|
|
p = PID[1]; |
|
Command1[3] = p & 0xff; |
|
p >>= 8; |
|
Command1[2] = p & 0xff; |
|
if ((status = card_send_command(ioaddr, name, Command1, st))) |
|
return status; |
|
|
|
p = PID[2]; |
|
Command2[3] = p & 0xff; |
|
p >>= 8; |
|
Command2[2] = p & 0xff; |
|
if ((status = card_send_command(ioaddr, name, Command2, st))) |
|
return status; |
|
|
|
p = PID[3]; |
|
Command3[3] = p & 0xff; |
|
p >>= 8; |
|
Command3[2] = p & 0xff; |
|
if ((status = card_send_command(ioaddr, name, Command3, st))) |
|
return status; |
|
|
|
if ((status = card_send_command(ioaddr, name, Command4, st))) |
|
return status; |
|
return sb1000_end_get_set_command(ioaddr, name); |
|
} |
|
|
|
|
|
static void |
|
sb1000_print_status_buffer(const char* name, unsigned char st[], |
|
unsigned char buffer[], int size) |
|
{ |
|
int i, j, k; |
|
|
|
printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); |
|
if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { |
|
printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " |
|
"to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], |
|
buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], |
|
buffer[46] << 8 | buffer[47], |
|
buffer[42], buffer[43], buffer[44], buffer[45], |
|
buffer[48] << 8 | buffer[49]); |
|
} else { |
|
for (i = 0, k = 0; i < (size + 7) / 8; i++) { |
|
printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); |
|
for (j = 0; j < 8 && k < size; j++, k++) |
|
printk(" %02x", buffer[k]); |
|
printk("\n"); |
|
} |
|
} |
|
} |
|
|
|
/* |
|
* SB1000 commands for frame rx interrupt |
|
*/ |
|
/* receive a single frame and assemble datagram |
|
* (this is the heart of the interrupt routine) |
|
*/ |
|
static int |
|
sb1000_rx(struct net_device *dev) |
|
{ |
|
|
|
#define FRAMESIZE 184 |
|
unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; |
|
short dlen; |
|
int ioaddr, ns; |
|
unsigned int skbsize; |
|
struct sk_buff *skb; |
|
struct sb1000_private *lp = netdev_priv(dev); |
|
struct net_device_stats *stats = &dev->stats; |
|
|
|
/* SB1000 frame constants */ |
|
const int FrameSize = FRAMESIZE; |
|
const int NewDatagramHeaderSkip = 8; |
|
const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; |
|
const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; |
|
const int ContDatagramHeaderSkip = 7; |
|
const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; |
|
const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; |
|
const int TrailerSize = 4; |
|
|
|
ioaddr = dev->base_addr; |
|
|
|
insw(ioaddr, (unsigned short*) st, 1); |
|
#ifdef XXXDEBUG |
|
printk("cm0: received: %02x %02x\n", st[0], st[1]); |
|
#endif /* XXXDEBUG */ |
|
lp->rx_frames++; |
|
|
|
/* decide if it is a good or bad frame */ |
|
for (ns = 0; ns < NPIDS; ns++) { |
|
session_id = lp->rx_session_id[ns]; |
|
frame_id = lp->rx_frame_id[ns]; |
|
if (st[0] == session_id) { |
|
if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { |
|
goto good_frame; |
|
} else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { |
|
goto skipped_frame; |
|
} else { |
|
goto bad_frame; |
|
} |
|
} else if (st[0] == (session_id | 0x40)) { |
|
if ((st[1] & 0xf0) == 0x30) { |
|
goto skipped_frame; |
|
} else { |
|
goto bad_frame; |
|
} |
|
} |
|
} |
|
goto bad_frame; |
|
|
|
skipped_frame: |
|
stats->rx_frame_errors++; |
|
skb = lp->rx_skb[ns]; |
|
if (sb1000_debug > 1) |
|
printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " |
|
"expecting %02x %02x\n", dev->name, st[0], st[1], |
|
skb ? session_id : session_id | 0x40, frame_id); |
|
if (skb) { |
|
dev_kfree_skb(skb); |
|
skb = NULL; |
|
} |
|
|
|
good_frame: |
|
lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); |
|
/* new datagram */ |
|
if (st[0] & 0x40) { |
|
/* get data length */ |
|
insw(ioaddr, buffer, NewDatagramHeaderSize / 2); |
|
#ifdef XXXDEBUG |
|
printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); |
|
#endif /* XXXDEBUG */ |
|
if (buffer[0] != NewDatagramHeaderSkip) { |
|
if (sb1000_debug > 1) |
|
printk(KERN_WARNING "%s: new datagram header skip error: " |
|
"got %02x expecting %02x\n", dev->name, buffer[0], |
|
NewDatagramHeaderSkip); |
|
stats->rx_length_errors++; |
|
insw(ioaddr, buffer, NewDatagramDataSize / 2); |
|
goto bad_frame_next; |
|
} |
|
dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | |
|
buffer[NewDatagramHeaderSkip + 4]) - 17; |
|
if (dlen > SB1000_MRU) { |
|
if (sb1000_debug > 1) |
|
printk(KERN_WARNING "%s: datagram length (%d) greater " |
|
"than MRU (%d)\n", dev->name, dlen, SB1000_MRU); |
|
stats->rx_length_errors++; |
|
insw(ioaddr, buffer, NewDatagramDataSize / 2); |
|
goto bad_frame_next; |
|
} |
|
lp->rx_dlen[ns] = dlen; |
|
/* compute size to allocate for datagram */ |
|
skbsize = dlen + FrameSize; |
|
if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { |
|
if (sb1000_debug > 1) |
|
printk(KERN_WARNING "%s: can't allocate %d bytes long " |
|
"skbuff\n", dev->name, skbsize); |
|
stats->rx_dropped++; |
|
insw(ioaddr, buffer, NewDatagramDataSize / 2); |
|
goto dropped_frame; |
|
} |
|
skb->dev = dev; |
|
skb_reset_mac_header(skb); |
|
skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
|
insw(ioaddr, skb_put(skb, NewDatagramDataSize), |
|
NewDatagramDataSize / 2); |
|
lp->rx_skb[ns] = skb; |
|
} else { |
|
/* continuation of previous datagram */ |
|
insw(ioaddr, buffer, ContDatagramHeaderSize / 2); |
|
if (buffer[0] != ContDatagramHeaderSkip) { |
|
if (sb1000_debug > 1) |
|
printk(KERN_WARNING "%s: cont datagram header skip error: " |
|
"got %02x expecting %02x\n", dev->name, buffer[0], |
|
ContDatagramHeaderSkip); |
|
stats->rx_length_errors++; |
|
insw(ioaddr, buffer, ContDatagramDataSize / 2); |
|
goto bad_frame_next; |
|
} |
|
skb = lp->rx_skb[ns]; |
|
insw(ioaddr, skb_put(skb, ContDatagramDataSize), |
|
ContDatagramDataSize / 2); |
|
dlen = lp->rx_dlen[ns]; |
|
} |
|
if (skb->len < dlen + TrailerSize) { |
|
lp->rx_session_id[ns] &= ~0x40; |
|
return 0; |
|
} |
|
|
|
/* datagram completed: send to upper level */ |
|
skb_trim(skb, dlen); |
|
netif_rx(skb); |
|
stats->rx_bytes+=dlen; |
|
stats->rx_packets++; |
|
lp->rx_skb[ns] = NULL; |
|
lp->rx_session_id[ns] |= 0x40; |
|
return 0; |
|
|
|
bad_frame: |
|
insw(ioaddr, buffer, FrameSize / 2); |
|
if (sb1000_debug > 1) |
|
printk(KERN_WARNING "%s: frame error: got %02x %02x\n", |
|
dev->name, st[0], st[1]); |
|
stats->rx_frame_errors++; |
|
bad_frame_next: |
|
if (sb1000_debug > 2) |
|
sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); |
|
dropped_frame: |
|
stats->rx_errors++; |
|
if (ns < NPIDS) { |
|
if ((skb = lp->rx_skb[ns])) { |
|
dev_kfree_skb(skb); |
|
lp->rx_skb[ns] = NULL; |
|
} |
|
lp->rx_session_id[ns] |= 0x40; |
|
} |
|
return -1; |
|
} |
|
|
|
static void |
|
sb1000_error_dpc(struct net_device *dev) |
|
{ |
|
static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
char *name; |
|
unsigned char st[5]; |
|
int ioaddr[2]; |
|
struct sb1000_private *lp = netdev_priv(dev); |
|
const int ErrorDpcCounterInitialize = 200; |
|
|
|
ioaddr[0] = dev->base_addr; |
|
/* mem_start holds the second I/O address */ |
|
ioaddr[1] = dev->mem_start; |
|
name = dev->name; |
|
|
|
sb1000_wait_for_ready_clear(ioaddr, name); |
|
sb1000_send_command(ioaddr, name, Command0); |
|
sb1000_wait_for_ready(ioaddr, name); |
|
sb1000_read_status(ioaddr, st); |
|
if (st[1] & 0x10) |
|
lp->rx_error_dpc_count = ErrorDpcCounterInitialize; |
|
} |
|
|
|
|
|
/* |
|
* Linux interface functions |
|
*/ |
|
static int |
|
sb1000_open(struct net_device *dev) |
|
{ |
|
char *name; |
|
int ioaddr[2], status; |
|
struct sb1000_private *lp = netdev_priv(dev); |
|
const unsigned short FirmwareVersion[] = {0x01, 0x01}; |
|
|
|
ioaddr[0] = dev->base_addr; |
|
/* mem_start holds the second I/O address */ |
|
ioaddr[1] = dev->mem_start; |
|
name = dev->name; |
|
|
|
/* initialize sb1000 */ |
|
if ((status = sb1000_reset(ioaddr, name))) |
|
return status; |
|
ssleep(1); |
|
if ((status = sb1000_check_CRC(ioaddr, name))) |
|
return status; |
|
|
|
/* initialize private data before board can catch interrupts */ |
|
lp->rx_skb[0] = NULL; |
|
lp->rx_skb[1] = NULL; |
|
lp->rx_skb[2] = NULL; |
|
lp->rx_skb[3] = NULL; |
|
lp->rx_dlen[0] = 0; |
|
lp->rx_dlen[1] = 0; |
|
lp->rx_dlen[2] = 0; |
|
lp->rx_dlen[3] = 0; |
|
lp->rx_frames = 0; |
|
lp->rx_error_count = 0; |
|
lp->rx_error_dpc_count = 0; |
|
lp->rx_session_id[0] = 0x50; |
|
lp->rx_session_id[1] = 0x48; |
|
lp->rx_session_id[2] = 0x44; |
|
lp->rx_session_id[3] = 0x42; |
|
lp->rx_frame_id[0] = 0; |
|
lp->rx_frame_id[1] = 0; |
|
lp->rx_frame_id[2] = 0; |
|
lp->rx_frame_id[3] = 0; |
|
if (request_irq(dev->irq, sb1000_interrupt, 0, "sb1000", dev)) { |
|
return -EAGAIN; |
|
} |
|
|
|
if (sb1000_debug > 2) |
|
printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); |
|
|
|
/* Activate board and check firmware version */ |
|
udelay(1000); |
|
if ((status = sb1000_activate(ioaddr, name))) |
|
return status; |
|
udelay(0); |
|
if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) |
|
return status; |
|
if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) |
|
printk(KERN_WARNING "%s: found firmware version %x.%02x " |
|
"(should be %x.%02x)\n", name, version[0], version[1], |
|
FirmwareVersion[0], FirmwareVersion[1]); |
|
|
|
|
|
netif_start_queue(dev); |
|
return 0; /* Always succeed */ |
|
} |
|
|
|
static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
|
{ |
|
char* name; |
|
unsigned char version[2]; |
|
short PID[4]; |
|
int ioaddr[2], status, frequency; |
|
unsigned int stats[5]; |
|
struct sb1000_private *lp = netdev_priv(dev); |
|
|
|
if (!(dev && dev->flags & IFF_UP)) |
|
return -ENODEV; |
|
|
|
ioaddr[0] = dev->base_addr; |
|
/* mem_start holds the second I/O address */ |
|
ioaddr[1] = dev->mem_start; |
|
name = dev->name; |
|
|
|
switch (cmd) { |
|
case SIOCGCMSTATS: /* get statistics */ |
|
stats[0] = dev->stats.rx_bytes; |
|
stats[1] = lp->rx_frames; |
|
stats[2] = dev->stats.rx_packets; |
|
stats[3] = dev->stats.rx_errors; |
|
stats[4] = dev->stats.rx_dropped; |
|
if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) |
|
return -EFAULT; |
|
status = 0; |
|
break; |
|
|
|
case SIOCGCMFIRMWARE: /* get firmware version */ |
|
if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) |
|
return status; |
|
if(copy_to_user(ifr->ifr_data, version, sizeof(version))) |
|
return -EFAULT; |
|
break; |
|
|
|
case SIOCGCMFREQUENCY: /* get frequency */ |
|
if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) |
|
return status; |
|
if(put_user(frequency, (int __user *) ifr->ifr_data)) |
|
return -EFAULT; |
|
break; |
|
|
|
case SIOCSCMFREQUENCY: /* set frequency */ |
|
if (!capable(CAP_NET_ADMIN)) |
|
return -EPERM; |
|
if(get_user(frequency, (int __user *) ifr->ifr_data)) |
|
return -EFAULT; |
|
if ((status = sb1000_set_frequency(ioaddr, name, frequency))) |
|
return status; |
|
break; |
|
|
|
case SIOCGCMPIDS: /* get PIDs */ |
|
if ((status = sb1000_get_PIDs(ioaddr, name, PID))) |
|
return status; |
|
if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) |
|
return -EFAULT; |
|
break; |
|
|
|
case SIOCSCMPIDS: /* set PIDs */ |
|
if (!capable(CAP_NET_ADMIN)) |
|
return -EPERM; |
|
if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) |
|
return -EFAULT; |
|
if ((status = sb1000_set_PIDs(ioaddr, name, PID))) |
|
return status; |
|
/* set session_id, frame_id and pkt_type too */ |
|
lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); |
|
lp->rx_session_id[1] = 0x48; |
|
lp->rx_session_id[2] = 0x44; |
|
lp->rx_session_id[3] = 0x42; |
|
lp->rx_frame_id[0] = 0; |
|
lp->rx_frame_id[1] = 0; |
|
lp->rx_frame_id[2] = 0; |
|
lp->rx_frame_id[3] = 0; |
|
break; |
|
|
|
default: |
|
status = -EINVAL; |
|
break; |
|
} |
|
return status; |
|
} |
|
|
|
/* transmit function: do nothing since SB1000 can't send anything out */ |
|
static netdev_tx_t |
|
sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
|
{ |
|
printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); |
|
/* sb1000 can't xmit datagrams */ |
|
dev_kfree_skb(skb); |
|
return NETDEV_TX_OK; |
|
} |
|
|
|
/* SB1000 interrupt handler. */ |
|
static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
|
{ |
|
static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
|
static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
|
|
|
char *name; |
|
unsigned char st; |
|
int ioaddr[2]; |
|
struct net_device *dev = dev_id; |
|
struct sb1000_private *lp = netdev_priv(dev); |
|
|
|
const int MaxRxErrorCount = 6; |
|
|
|
ioaddr[0] = dev->base_addr; |
|
/* mem_start holds the second I/O address */ |
|
ioaddr[1] = dev->mem_start; |
|
name = dev->name; |
|
|
|
/* is it a good interrupt? */ |
|
st = inb(ioaddr[1] + 6); |
|
if (!(st & 0x08 && st & 0x20)) { |
|
return IRQ_NONE; |
|
} |
|
|
|
if (sb1000_debug > 3) |
|
printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); |
|
|
|
st = inb(ioaddr[0] + 7); |
|
if (sb1000_rx(dev)) |
|
lp->rx_error_count++; |
|
#ifdef SB1000_DELAY |
|
udelay(SB1000_DELAY); |
|
#endif /* SB1000_DELAY */ |
|
sb1000_issue_read_command(ioaddr, name); |
|
if (st & 0x01) { |
|
sb1000_error_dpc(dev); |
|
sb1000_issue_read_command(ioaddr, name); |
|
} |
|
if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { |
|
sb1000_wait_for_ready_clear(ioaddr, name); |
|
sb1000_send_command(ioaddr, name, Command0); |
|
sb1000_wait_for_ready(ioaddr, name); |
|
sb1000_issue_read_command(ioaddr, name); |
|
} |
|
if (lp->rx_error_count >= MaxRxErrorCount) { |
|
sb1000_wait_for_ready_clear(ioaddr, name); |
|
sb1000_send_command(ioaddr, name, Command1); |
|
sb1000_wait_for_ready(ioaddr, name); |
|
sb1000_issue_read_command(ioaddr, name); |
|
lp->rx_error_count = 0; |
|
} |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static int sb1000_close(struct net_device *dev) |
|
{ |
|
int i; |
|
int ioaddr[2]; |
|
struct sb1000_private *lp = netdev_priv(dev); |
|
|
|
if (sb1000_debug > 2) |
|
printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); |
|
|
|
netif_stop_queue(dev); |
|
|
|
ioaddr[0] = dev->base_addr; |
|
/* mem_start holds the second I/O address */ |
|
ioaddr[1] = dev->mem_start; |
|
|
|
free_irq(dev->irq, dev); |
|
/* If we don't do this, we can't re-insmod it later. */ |
|
release_region(ioaddr[1], SB1000_IO_EXTENT); |
|
release_region(ioaddr[0], SB1000_IO_EXTENT); |
|
|
|
/* free rx_skb's if needed */ |
|
for (i=0; i<4; i++) { |
|
if (lp->rx_skb[i]) { |
|
dev_kfree_skb(lp->rx_skb[i]); |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
MODULE_AUTHOR("Franco Venturi <[email protected]>"); |
|
MODULE_DESCRIPTION("General Instruments SB1000 driver"); |
|
MODULE_LICENSE("GPL"); |
|
|
|
module_pnp_driver(sb1000_driver);
|
|
|