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-rw-r--r--drivers/net/sb1000.c1179
1 files changed, 0 insertions, 1179 deletions
diff --git a/drivers/net/sb1000.c b/drivers/net/sb1000.c
deleted file mode 100644
index c3f8020571ad..000000000000
--- a/drivers/net/sb1000.c
+++ /dev/null
@@ -1,1179 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/* sb1000.c: A General Instruments SB1000 driver for linux. */
-/*
- Written 1998 by Franco Venturi.
-
- Copyright 1998 by Franco Venturi.
- Copyright 1994,1995 by Donald Becker.
- Copyright 1993 United States Government as represented by the
- Director, National Security Agency.
-
- This driver is for the General Instruments SB1000 (internal SURFboard)
-
- The author may be reached as fventuri@mediaone.net
-
-
- Changes:
-
- 981115 Steven Hirsch <shirsch@adelphia.net>
-
- Linus changed the timer interface. Should work on all recent
- development kernels.
-
- 980608 Steven Hirsch <shirsch@adelphia.net>
-
- Small changes to make it work with 2.1.x kernels. Hopefully,
- nothing major will change before official release of Linux 2.2.
-
- Merged with 2.2 - Alan Cox
-*/
-
-static char version[] = "sb1000.c:v1.1.2 6/01/98 (fventuri@mediaone.net)\n";
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/interrupt.h>
-#include <linux/errno.h>
-#include <linux/if_cablemodem.h> /* for SIOGCM/SIOSCM stuff */
-#include <linux/in.h>
-#include <linux/ioport.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/skbuff.h>
-#include <linux/delay.h> /* for udelay() */
-#include <linux/etherdevice.h>
-#include <linux/pnp.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <linux/gfp.h>
-
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <linux/uaccess.h>
-
-#ifdef SB1000_DEBUG
-static int sb1000_debug = SB1000_DEBUG;
-#else
-static const int sb1000_debug = 1;
-#endif
-
-static const int SB1000_IO_EXTENT = 8;
-/* SB1000 Maximum Receive Unit */
-static const int SB1000_MRU = 1500; /* octects */
-
-#define NPIDS 4
-struct sb1000_private {
- struct sk_buff *rx_skb[NPIDS];
- short rx_dlen[NPIDS];
- unsigned int rx_frames;
- short rx_error_count;
- short rx_error_dpc_count;
- unsigned char rx_session_id[NPIDS];
- unsigned char rx_frame_id[NPIDS];
- unsigned char rx_pkt_type[NPIDS];
-};
-
-/* prototypes for Linux interface */
-extern int sb1000_probe(struct net_device *dev);
-static int sb1000_open(struct net_device *dev);
-static int sb1000_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
- void __user *data, int cmd);
-static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static irqreturn_t sb1000_interrupt(int irq, void *dev_id);
-static int sb1000_close(struct net_device *dev);
-
-
-/* SB1000 hardware routines to be used during open/configuration phases */
-static int card_wait_for_busy_clear(const int ioaddr[],
- const char* name);
-static int card_wait_for_ready(const int ioaddr[], const char* name,
- unsigned char in[]);
-static int card_send_command(const int ioaddr[], const char* name,
- const unsigned char out[], unsigned char in[]);
-
-/* SB1000 hardware routines to be used during frame rx interrupt */
-static int sb1000_wait_for_ready(const int ioaddr[], const char* name);
-static int sb1000_wait_for_ready_clear(const int ioaddr[],
- const char* name);
-static void sb1000_send_command(const int ioaddr[], const char* name,
- const unsigned char out[]);
-static void sb1000_read_status(const int ioaddr[], unsigned char in[]);
-static void sb1000_issue_read_command(const int ioaddr[],
- const char* name);
-
-/* SB1000 commands for open/configuration */
-static int sb1000_reset(const int ioaddr[], const char* name);
-static int sb1000_check_CRC(const int ioaddr[], const char* name);
-static inline int sb1000_start_get_set_command(const int ioaddr[],
- const char* name);
-static int sb1000_end_get_set_command(const int ioaddr[],
- const char* name);
-static int sb1000_activate(const int ioaddr[], const char* name);
-static int sb1000_get_firmware_version(const int ioaddr[],
- const char* name, unsigned char version[], int do_end);
-static int sb1000_get_frequency(const int ioaddr[], const char* name,
- int* frequency);
-static int sb1000_set_frequency(const int ioaddr[], const char* name,
- int frequency);
-static int sb1000_get_PIDs(const int ioaddr[], const char* name,
- short PID[]);
-static int sb1000_set_PIDs(const int ioaddr[], const char* name,
- const short PID[]);
-
-/* SB1000 commands for frame rx interrupt */
-static int sb1000_rx(struct net_device *dev);
-static void sb1000_error_dpc(struct net_device *dev);
-
-static const struct pnp_device_id sb1000_pnp_ids[] = {
- { "GIC1000", 0 },
- { "", 0 }
-};
-MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids);
-
-static const struct net_device_ops sb1000_netdev_ops = {
- .ndo_open = sb1000_open,
- .ndo_start_xmit = sb1000_start_xmit,
- .ndo_siocdevprivate = sb1000_siocdevprivate,
- .ndo_stop = sb1000_close,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int
-sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id)
-{
- struct net_device *dev;
- unsigned short ioaddr[2], irq;
- unsigned int serial_number;
- int error = -ENODEV;
- u8 addr[ETH_ALEN];
-
- if (pnp_device_attach(pdev) < 0)
- return -ENODEV;
- if (pnp_activate_dev(pdev) < 0)
- goto out_detach;
-
- if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1))
- goto out_disable;
- if (!pnp_irq_valid(pdev, 0))
- goto out_disable;
-
- serial_number = pdev->card->serial;
-
- ioaddr[0] = pnp_port_start(pdev, 0);
- ioaddr[1] = pnp_port_start(pdev, 0);
-
- irq = pnp_irq(pdev, 0);
-
- if (!request_region(ioaddr[0], 16, "sb1000"))
- goto out_disable;
- if (!request_region(ioaddr[1], 16, "sb1000"))
- goto out_release_region0;
-
- dev = alloc_etherdev(sizeof(struct sb1000_private));
- if (!dev) {
- error = -ENOMEM;
- goto out_release_regions;
- }
-
-
- dev->base_addr = ioaddr[0];
- /* mem_start holds the second I/O address */
- dev->mem_start = ioaddr[1];
- dev->irq = irq;
-
- if (sb1000_debug > 0)
- printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), "
- "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr,
- dev->mem_start, serial_number, dev->irq);
-
- /*
- * The SB1000 is an rx-only cable modem device. The uplink is a modem
- * and we do not want to arp on it.
- */
- dev->flags = IFF_POINTOPOINT|IFF_NOARP;
-
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- if (sb1000_debug > 0)
- printk(KERN_NOTICE "%s", version);
-
- dev->netdev_ops = &sb1000_netdev_ops;
-
- /* hardware address is 0:0:serial_number */
- addr[0] = 0;
- addr[1] = 0;
- addr[2] = serial_number >> 24 & 0xff;
- addr[3] = serial_number >> 16 & 0xff;
- addr[4] = serial_number >> 8 & 0xff;
- addr[5] = serial_number >> 0 & 0xff;
- eth_hw_addr_set(dev, addr);
-
- pnp_set_drvdata(pdev, dev);
-
- error = register_netdev(dev);
- if (error)
- goto out_free_netdev;
- return 0;
-
- out_free_netdev:
- free_netdev(dev);
- out_release_regions:
- release_region(ioaddr[1], 16);
- out_release_region0:
- release_region(ioaddr[0], 16);
- out_disable:
- pnp_disable_dev(pdev);
- out_detach:
- pnp_device_detach(pdev);
- return error;
-}
-
-static void
-sb1000_remove_one(struct pnp_dev *pdev)
-{
- struct net_device *dev = pnp_get_drvdata(pdev);
-
- unregister_netdev(dev);
- release_region(dev->base_addr, 16);
- release_region(dev->mem_start, 16);
- free_netdev(dev);
-}
-
-static struct pnp_driver sb1000_driver = {
- .name = "sb1000",
- .id_table = sb1000_pnp_ids,
- .probe = sb1000_probe_one,
- .remove = sb1000_remove_one,
-};
-
-
-/*
- * SB1000 hardware routines to be used during open/configuration phases
- */
-
-static const int TimeOutJiffies = (875 * HZ) / 100;
-
-/* Card Wait For Busy Clear (cannot be used during an interrupt) */
-static int
-card_wait_for_busy_clear(const int ioaddr[], const char* name)
-{
- unsigned char a;
- unsigned long timeout;
-
- a = inb(ioaddr[0] + 7);
- timeout = jiffies + TimeOutJiffies;
- while (a & 0x80 || a & 0x40) {
- /* a little sleep */
- yield();
-
- a = inb(ioaddr[0] + 7);
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n",
- name);
- return -ETIME;
- }
- }
-
- return 0;
-}
-
-/* Card Wait For Ready (cannot be used during an interrupt) */
-static int
-card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[])
-{
- unsigned char a;
- unsigned long timeout;
-
- a = inb(ioaddr[1] + 6);
- timeout = jiffies + TimeOutJiffies;
- while (a & 0x80 || !(a & 0x40)) {
- /* a little sleep */
- yield();
-
- a = inb(ioaddr[1] + 6);
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: card_wait_for_ready timeout\n",
- name);
- return -ETIME;
- }
- }
-
- in[1] = inb(ioaddr[0] + 1);
- in[2] = inb(ioaddr[0] + 2);
- in[3] = inb(ioaddr[0] + 3);
- in[4] = inb(ioaddr[0] + 4);
- in[0] = inb(ioaddr[0] + 5);
- in[6] = inb(ioaddr[0] + 6);
- in[5] = inb(ioaddr[1] + 6);
- return 0;
-}
-
-/* Card Send Command (cannot be used during an interrupt) */
-static int
-card_send_command(const int ioaddr[], const char* name,
- const unsigned char out[], unsigned char in[])
-{
- int status;
-
- if ((status = card_wait_for_busy_clear(ioaddr, name)))
- return status;
- outb(0xa0, ioaddr[0] + 6);
- outb(out[2], ioaddr[0] + 1);
- outb(out[3], ioaddr[0] + 2);
- outb(out[4], ioaddr[0] + 3);
- outb(out[5], ioaddr[0] + 4);
- outb(out[1], ioaddr[0] + 5);
- outb(0xa0, ioaddr[0] + 6);
- outb(out[0], ioaddr[0] + 7);
- if (out[0] != 0x20 && out[0] != 0x30) {
- if ((status = card_wait_for_ready(ioaddr, name, in)))
- return status;
- inb(ioaddr[0] + 7);
- if (sb1000_debug > 3)
- printk(KERN_DEBUG "%s: card_send_command "
- "out: %02x%02x%02x%02x%02x%02x "
- "in: %02x%02x%02x%02x%02x%02x%02x\n", name,
- out[0], out[1], out[2], out[3], out[4], out[5],
- in[0], in[1], in[2], in[3], in[4], in[5], in[6]);
- } else {
- if (sb1000_debug > 3)
- printk(KERN_DEBUG "%s: card_send_command "
- "out: %02x%02x%02x%02x%02x%02x\n", name,
- out[0], out[1], out[2], out[3], out[4], out[5]);
- }
-
- if (out[1] != 0x1b) {
- if (out[0] >= 0x80 && in[0] != (out[1] | 0x80))
- return -EIO;
- }
- return 0;
-}
-
-
-/*
- * SB1000 hardware routines to be used during frame rx interrupt
- */
-static const int Sb1000TimeOutJiffies = 7 * HZ;
-
-/* Card Wait For Ready (to be used during frame rx) */
-static int
-sb1000_wait_for_ready(const int ioaddr[], const char* name)
-{
- unsigned long timeout;
-
- timeout = jiffies + Sb1000TimeOutJiffies;
- while (inb(ioaddr[1] + 6) & 0x80) {
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n",
- name);
- return -ETIME;
- }
- }
- timeout = jiffies + Sb1000TimeOutJiffies;
- while (!(inb(ioaddr[1] + 6) & 0x40)) {
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n",
- name);
- return -ETIME;
- }
- }
- inb(ioaddr[0] + 7);
- return 0;
-}
-
-/* Card Wait For Ready Clear (to be used during frame rx) */
-static int
-sb1000_wait_for_ready_clear(const int ioaddr[], const char* name)
-{
- unsigned long timeout;
-
- timeout = jiffies + Sb1000TimeOutJiffies;
- while (inb(ioaddr[1] + 6) & 0x80) {
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n",
- name);
- return -ETIME;
- }
- }
- timeout = jiffies + Sb1000TimeOutJiffies;
- while (inb(ioaddr[1] + 6) & 0x40) {
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n",
- name);
- return -ETIME;
- }
- }
- return 0;
-}
-
-/* Card Send Command (to be used during frame rx) */
-static void
-sb1000_send_command(const int ioaddr[], const char* name,
- const unsigned char out[])
-{
- outb(out[2], ioaddr[0] + 1);
- outb(out[3], ioaddr[0] + 2);
- outb(out[4], ioaddr[0] + 3);
- outb(out[5], ioaddr[0] + 4);
- outb(out[1], ioaddr[0] + 5);
- outb(out[0], ioaddr[0] + 7);
- if (sb1000_debug > 3)
- printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x"
- "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]);
-}
-
-/* Card Read Status (to be used during frame rx) */
-static void
-sb1000_read_status(const int ioaddr[], unsigned char in[])
-{
- in[1] = inb(ioaddr[0] + 1);
- in[2] = inb(ioaddr[0] + 2);
- in[3] = inb(ioaddr[0] + 3);
- in[4] = inb(ioaddr[0] + 4);
- in[0] = inb(ioaddr[0] + 5);
-}
-
-/* Issue Read Command (to be used during frame rx) */
-static void
-sb1000_issue_read_command(const int ioaddr[], const char* name)
-{
- static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00};
-
- sb1000_wait_for_ready_clear(ioaddr, name);
- outb(0xa0, ioaddr[0] + 6);
- sb1000_send_command(ioaddr, name, Command0);
-}
-
-
-/*
- * SB1000 commands for open/configuration
- */
-/* reset SB1000 card */
-static int
-sb1000_reset(const int ioaddr[], const char* name)
-{
- static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00};
-
- unsigned char st[7];
- int port, status;
-
- port = ioaddr[1] + 6;
- outb(0x4, port);
- inb(port);
- udelay(1000);
- outb(0x0, port);
- inb(port);
- ssleep(1);
- outb(0x4, port);
- inb(port);
- udelay(1000);
- outb(0x0, port);
- inb(port);
- udelay(0);
-
- if ((status = card_send_command(ioaddr, name, Command0, st)))
- return status;
- if (st[3] != 0xf0)
- return -EIO;
- return 0;
-}
-
-/* check SB1000 firmware CRC */
-static int
-sb1000_check_CRC(const int ioaddr[], const char* name)
-{
- static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00};
-
- unsigned char st[7];
- int status;
-
- /* check CRC */
- if ((status = card_send_command(ioaddr, name, Command0, st)))
- return status;
- if (st[1] != st[3] || st[2] != st[4])
- return -EIO;
- return 0;
-}
-
-static inline int
-sb1000_start_get_set_command(const int ioaddr[], const char* name)
-{
- static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00};
-
- unsigned char st[7];
-
- return card_send_command(ioaddr, name, Command0, st);
-}
-
-static int
-sb1000_end_get_set_command(const int ioaddr[], const char* name)
-{
- static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00};
- static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00};
-
- unsigned char st[7];
- int status;
-
- if ((status = card_send_command(ioaddr, name, Command0, st)))
- return status;
- return card_send_command(ioaddr, name, Command1, st);
-}
-
-static int
-sb1000_activate(const int ioaddr[], const char* name)
-{
- static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00};
- static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00};
-
- unsigned char st[7];
- int status;
-
- ssleep(1);
- status = card_send_command(ioaddr, name, Command0, st);
- if (status)
- return status;
- status = card_send_command(ioaddr, name, Command1, st);
- if (status)
- return status;
- if (st[3] != 0xf1) {
- 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_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
- void __user *data, 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(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(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 *)data))
- return -EFAULT;
- break;
-
- case SIOCSCMFREQUENCY: /* set frequency */
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- if (get_user(frequency, (int __user *)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(data, PID, sizeof(PID)))
- return -EFAULT;
- break;
-
- case SIOCSCMPIDS: /* set PIDs */
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- if (copy_from_user(PID, 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 <fventuri@mediaone.net>");
-MODULE_DESCRIPTION("General Instruments SB1000 driver");
-MODULE_LICENSE("GPL");
-
-module_pnp_driver(sb1000_driver);
generated by cgit v1.2.3 (git 2.46.0) at 2025-04-27 21:36:16 +0000