Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* sb1000.c: A General Instruments SB1000 driver for linux. */ |
| 2 | /* |
| 3 | Written 1998 by Franco Venturi. |
| 4 | |
| 5 | Copyright 1998 by Franco Venturi. |
| 6 | Copyright 1994,1995 by Donald Becker. |
| 7 | Copyright 1993 United States Government as represented by the |
| 8 | Director, National Security Agency. |
| 9 | |
| 10 | This driver is for the General Instruments SB1000 (internal SURFboard) |
| 11 | |
| 12 | The author may be reached as fventuri@mediaone.net |
| 13 | |
| 14 | This program is free software; you can redistribute it |
| 15 | and/or modify it under the terms of the GNU General |
| 16 | Public License as published by the Free Software |
| 17 | Foundation; either version 2 of the License, or (at |
| 18 | your option) any later version. |
| 19 | |
| 20 | Changes: |
| 21 | |
| 22 | 981115 Steven Hirsch <shirsch@adelphia.net> |
| 23 | |
| 24 | Linus changed the timer interface. Should work on all recent |
| 25 | development kernels. |
| 26 | |
| 27 | 980608 Steven Hirsch <shirsch@adelphia.net> |
| 28 | |
| 29 | Small changes to make it work with 2.1.x kernels. Hopefully, |
| 30 | nothing major will change before official release of Linux 2.2. |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 31 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | Merged with 2.2 - Alan Cox |
| 33 | */ |
| 34 | |
| 35 | static char version[] = "sb1000.c:v1.1.2 6/01/98 (fventuri@mediaone.net)\n"; |
| 36 | |
| 37 | #include <linux/module.h> |
| 38 | #include <linux/kernel.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 39 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/string.h> |
| 41 | #include <linux/interrupt.h> |
| 42 | #include <linux/errno.h> |
| 43 | #include <linux/if_cablemodem.h> /* for SIOGCM/SIOSCM stuff */ |
| 44 | #include <linux/in.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/ioport.h> |
| 46 | #include <linux/netdevice.h> |
| 47 | #include <linux/if_arp.h> |
| 48 | #include <linux/skbuff.h> |
| 49 | #include <linux/delay.h> /* for udelay() */ |
| 50 | #include <linux/etherdevice.h> |
| 51 | #include <linux/pnp.h> |
| 52 | #include <linux/init.h> |
| 53 | #include <linux/bitops.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 54 | #include <linux/gfp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | #include <asm/io.h> |
| 57 | #include <asm/processor.h> |
| 58 | #include <asm/uaccess.h> |
| 59 | |
| 60 | #ifdef SB1000_DEBUG |
| 61 | static int sb1000_debug = SB1000_DEBUG; |
| 62 | #else |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 63 | static const int sb1000_debug = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #endif |
| 65 | |
| 66 | static const int SB1000_IO_EXTENT = 8; |
| 67 | /* SB1000 Maximum Receive Unit */ |
| 68 | static const int SB1000_MRU = 1500; /* octects */ |
| 69 | |
| 70 | #define NPIDS 4 |
| 71 | struct sb1000_private { |
| 72 | struct sk_buff *rx_skb[NPIDS]; |
| 73 | short rx_dlen[NPIDS]; |
| 74 | unsigned int rx_frames; |
| 75 | short rx_error_count; |
| 76 | short rx_error_dpc_count; |
| 77 | unsigned char rx_session_id[NPIDS]; |
| 78 | unsigned char rx_frame_id[NPIDS]; |
| 79 | unsigned char rx_pkt_type[NPIDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | }; |
| 81 | |
| 82 | /* prototypes for Linux interface */ |
| 83 | extern int sb1000_probe(struct net_device *dev); |
| 84 | static int sb1000_open(struct net_device *dev); |
| 85 | static int sb1000_dev_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 86 | static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb, |
| 87 | struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 88 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | static int sb1000_close(struct net_device *dev); |
| 90 | |
| 91 | |
| 92 | /* SB1000 hardware routines to be used during open/configuration phases */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 93 | static int card_wait_for_busy_clear(const int ioaddr[], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | const char* name); |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 95 | static int card_wait_for_ready(const int ioaddr[], const char* name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | unsigned char in[]); |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 97 | static int card_send_command(const int ioaddr[], const char* name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | const unsigned char out[], unsigned char in[]); |
| 99 | |
| 100 | /* SB1000 hardware routines to be used during frame rx interrupt */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 101 | static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
| 102 | static int sb1000_wait_for_ready_clear(const int ioaddr[], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | const char* name); |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 104 | static void sb1000_send_command(const int ioaddr[], const char* name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | const unsigned char out[]); |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 106 | static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
| 107 | static void sb1000_issue_read_command(const int ioaddr[], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | const char* name); |
| 109 | |
| 110 | /* SB1000 commands for open/configuration */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 111 | static int sb1000_reset(const int ioaddr[], const char* name); |
| 112 | static int sb1000_check_CRC(const int ioaddr[], const char* name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | static inline int sb1000_start_get_set_command(const int ioaddr[], |
| 114 | const char* name); |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 115 | static int sb1000_end_get_set_command(const int ioaddr[], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | const char* name); |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 117 | static int sb1000_activate(const int ioaddr[], const char* name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | static int sb1000_get_firmware_version(const int ioaddr[], |
| 119 | const char* name, unsigned char version[], int do_end); |
| 120 | static int sb1000_get_frequency(const int ioaddr[], const char* name, |
| 121 | int* frequency); |
| 122 | static int sb1000_set_frequency(const int ioaddr[], const char* name, |
| 123 | int frequency); |
| 124 | static int sb1000_get_PIDs(const int ioaddr[], const char* name, |
| 125 | short PID[]); |
| 126 | static int sb1000_set_PIDs(const int ioaddr[], const char* name, |
| 127 | const short PID[]); |
| 128 | |
| 129 | /* SB1000 commands for frame rx interrupt */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 130 | static int sb1000_rx(struct net_device *dev); |
| 131 | static void sb1000_error_dpc(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | |
| 133 | static const struct pnp_device_id sb1000_pnp_ids[] = { |
| 134 | { "GIC1000", 0 }, |
| 135 | { "", 0 } |
| 136 | }; |
| 137 | MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); |
| 138 | |
Stephen Hemminger | d49d19c9 | 2009-01-07 17:56:54 -0800 | [diff] [blame] | 139 | static const struct net_device_ops sb1000_netdev_ops = { |
| 140 | .ndo_open = sb1000_open, |
| 141 | .ndo_start_xmit = sb1000_start_xmit, |
| 142 | .ndo_do_ioctl = sb1000_dev_ioctl, |
| 143 | .ndo_stop = sb1000_close, |
| 144 | .ndo_change_mtu = eth_change_mtu, |
| 145 | .ndo_set_mac_address = eth_mac_addr, |
| 146 | .ndo_validate_addr = eth_validate_addr, |
| 147 | }; |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | static int |
| 150 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) |
| 151 | { |
| 152 | struct net_device *dev; |
| 153 | unsigned short ioaddr[2], irq; |
| 154 | unsigned int serial_number; |
| 155 | int error = -ENODEV; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | if (pnp_device_attach(pdev) < 0) |
| 158 | return -ENODEV; |
| 159 | if (pnp_activate_dev(pdev) < 0) |
| 160 | goto out_detach; |
| 161 | |
| 162 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) |
| 163 | goto out_disable; |
| 164 | if (!pnp_irq_valid(pdev, 0)) |
| 165 | goto out_disable; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | serial_number = pdev->card->serial; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | ioaddr[0] = pnp_port_start(pdev, 0); |
| 170 | ioaddr[1] = pnp_port_start(pdev, 0); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | irq = pnp_irq(pdev, 0); |
| 173 | |
| 174 | if (!request_region(ioaddr[0], 16, "sb1000")) |
| 175 | goto out_disable; |
| 176 | if (!request_region(ioaddr[1], 16, "sb1000")) |
| 177 | goto out_release_region0; |
| 178 | |
| 179 | dev = alloc_etherdev(sizeof(struct sb1000_private)); |
| 180 | if (!dev) { |
| 181 | error = -ENOMEM; |
| 182 | goto out_release_regions; |
| 183 | } |
| 184 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | dev->base_addr = ioaddr[0]; |
| 187 | /* mem_start holds the second I/O address */ |
| 188 | dev->mem_start = ioaddr[1]; |
| 189 | dev->irq = irq; |
| 190 | |
| 191 | if (sb1000_debug > 0) |
| 192 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " |
| 193 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, |
| 194 | dev->mem_start, serial_number, dev->irq); |
| 195 | |
| 196 | /* |
| 197 | * The SB1000 is an rx-only cable modem device. The uplink is a modem |
| 198 | * and we do not want to arp on it. |
| 199 | */ |
| 200 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 203 | |
| 204 | if (sb1000_debug > 0) |
| 205 | printk(KERN_NOTICE "%s", version); |
| 206 | |
Stephen Hemminger | d49d19c9 | 2009-01-07 17:56:54 -0800 | [diff] [blame] | 207 | dev->netdev_ops = &sb1000_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
| 209 | /* hardware address is 0:0:serial_number */ |
| 210 | dev->dev_addr[2] = serial_number >> 24 & 0xff; |
| 211 | dev->dev_addr[3] = serial_number >> 16 & 0xff; |
| 212 | dev->dev_addr[4] = serial_number >> 8 & 0xff; |
| 213 | dev->dev_addr[5] = serial_number >> 0 & 0xff; |
| 214 | |
| 215 | pnp_set_drvdata(pdev, dev); |
| 216 | |
| 217 | error = register_netdev(dev); |
| 218 | if (error) |
| 219 | goto out_free_netdev; |
| 220 | return 0; |
| 221 | |
| 222 | out_free_netdev: |
| 223 | free_netdev(dev); |
| 224 | out_release_regions: |
| 225 | release_region(ioaddr[1], 16); |
| 226 | out_release_region0: |
| 227 | release_region(ioaddr[0], 16); |
| 228 | out_disable: |
| 229 | pnp_disable_dev(pdev); |
| 230 | out_detach: |
| 231 | pnp_device_detach(pdev); |
| 232 | return error; |
| 233 | } |
| 234 | |
| 235 | static void |
| 236 | sb1000_remove_one(struct pnp_dev *pdev) |
| 237 | { |
| 238 | struct net_device *dev = pnp_get_drvdata(pdev); |
| 239 | |
| 240 | unregister_netdev(dev); |
| 241 | release_region(dev->base_addr, 16); |
| 242 | release_region(dev->mem_start, 16); |
| 243 | free_netdev(dev); |
| 244 | } |
| 245 | |
| 246 | static struct pnp_driver sb1000_driver = { |
| 247 | .name = "sb1000", |
| 248 | .id_table = sb1000_pnp_ids, |
| 249 | .probe = sb1000_probe_one, |
| 250 | .remove = sb1000_remove_one, |
| 251 | }; |
| 252 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | /* |
| 255 | * SB1000 hardware routines to be used during open/configuration phases |
| 256 | */ |
| 257 | |
| 258 | static const int TimeOutJiffies = (875 * HZ) / 100; |
| 259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 261 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | card_wait_for_busy_clear(const int ioaddr[], const char* name) |
| 263 | { |
| 264 | unsigned char a; |
| 265 | unsigned long timeout; |
| 266 | |
| 267 | a = inb(ioaddr[0] + 7); |
| 268 | timeout = jiffies + TimeOutJiffies; |
| 269 | while (a & 0x80 || a & 0x40) { |
| 270 | /* a little sleep */ |
| 271 | yield(); |
| 272 | |
| 273 | a = inb(ioaddr[0] + 7); |
| 274 | if (time_after_eq(jiffies, timeout)) { |
| 275 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", |
| 276 | name); |
| 277 | return -ETIME; |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | return 0; |
| 282 | } |
| 283 | |
| 284 | /* Card Wait For Ready (cannot be used during an interrupt) */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 285 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
| 287 | { |
| 288 | unsigned char a; |
| 289 | unsigned long timeout; |
| 290 | |
| 291 | a = inb(ioaddr[1] + 6); |
| 292 | timeout = jiffies + TimeOutJiffies; |
| 293 | while (a & 0x80 || !(a & 0x40)) { |
| 294 | /* a little sleep */ |
| 295 | yield(); |
| 296 | |
| 297 | a = inb(ioaddr[1] + 6); |
| 298 | if (time_after_eq(jiffies, timeout)) { |
| 299 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", |
| 300 | name); |
| 301 | return -ETIME; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | in[1] = inb(ioaddr[0] + 1); |
| 306 | in[2] = inb(ioaddr[0] + 2); |
| 307 | in[3] = inb(ioaddr[0] + 3); |
| 308 | in[4] = inb(ioaddr[0] + 4); |
| 309 | in[0] = inb(ioaddr[0] + 5); |
| 310 | in[6] = inb(ioaddr[0] + 6); |
| 311 | in[5] = inb(ioaddr[1] + 6); |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | /* Card Send Command (cannot be used during an interrupt) */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 316 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | card_send_command(const int ioaddr[], const char* name, |
| 318 | const unsigned char out[], unsigned char in[]) |
| 319 | { |
| 320 | int status, x; |
| 321 | |
| 322 | if ((status = card_wait_for_busy_clear(ioaddr, name))) |
| 323 | return status; |
| 324 | outb(0xa0, ioaddr[0] + 6); |
| 325 | outb(out[2], ioaddr[0] + 1); |
| 326 | outb(out[3], ioaddr[0] + 2); |
| 327 | outb(out[4], ioaddr[0] + 3); |
| 328 | outb(out[5], ioaddr[0] + 4); |
| 329 | outb(out[1], ioaddr[0] + 5); |
| 330 | outb(0xa0, ioaddr[0] + 6); |
| 331 | outb(out[0], ioaddr[0] + 7); |
| 332 | if (out[0] != 0x20 && out[0] != 0x30) { |
| 333 | if ((status = card_wait_for_ready(ioaddr, name, in))) |
| 334 | return status; |
| 335 | inb(ioaddr[0] + 7); |
| 336 | if (sb1000_debug > 3) |
| 337 | printk(KERN_DEBUG "%s: card_send_command " |
| 338 | "out: %02x%02x%02x%02x%02x%02x " |
| 339 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, |
| 340 | out[0], out[1], out[2], out[3], out[4], out[5], |
| 341 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); |
| 342 | } else { |
| 343 | if (sb1000_debug > 3) |
| 344 | printk(KERN_DEBUG "%s: card_send_command " |
| 345 | "out: %02x%02x%02x%02x%02x%02x\n", name, |
| 346 | out[0], out[1], out[2], out[3], out[4], out[5]); |
| 347 | } |
| 348 | |
| 349 | if (out[1] == 0x1b) { |
| 350 | x = (out[2] == 0x02); |
| 351 | } else { |
| 352 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) |
| 353 | return -EIO; |
| 354 | } |
| 355 | return 0; |
| 356 | } |
| 357 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | /* |
| 360 | * SB1000 hardware routines to be used during frame rx interrupt |
| 361 | */ |
| 362 | static const int Sb1000TimeOutJiffies = 7 * HZ; |
| 363 | |
| 364 | /* Card Wait For Ready (to be used during frame rx) */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 365 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
| 367 | { |
| 368 | unsigned long timeout; |
| 369 | |
| 370 | timeout = jiffies + Sb1000TimeOutJiffies; |
| 371 | while (inb(ioaddr[1] + 6) & 0x80) { |
| 372 | if (time_after_eq(jiffies, timeout)) { |
| 373 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", |
| 374 | name); |
| 375 | return -ETIME; |
| 376 | } |
| 377 | } |
| 378 | timeout = jiffies + Sb1000TimeOutJiffies; |
| 379 | while (!(inb(ioaddr[1] + 6) & 0x40)) { |
| 380 | if (time_after_eq(jiffies, timeout)) { |
| 381 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", |
| 382 | name); |
| 383 | return -ETIME; |
| 384 | } |
| 385 | } |
| 386 | inb(ioaddr[0] + 7); |
| 387 | return 0; |
| 388 | } |
| 389 | |
| 390 | /* Card Wait For Ready Clear (to be used during frame rx) */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 391 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
| 393 | { |
| 394 | unsigned long timeout; |
| 395 | |
| 396 | timeout = jiffies + Sb1000TimeOutJiffies; |
| 397 | while (inb(ioaddr[1] + 6) & 0x80) { |
| 398 | if (time_after_eq(jiffies, timeout)) { |
| 399 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", |
| 400 | name); |
| 401 | return -ETIME; |
| 402 | } |
| 403 | } |
| 404 | timeout = jiffies + Sb1000TimeOutJiffies; |
| 405 | while (inb(ioaddr[1] + 6) & 0x40) { |
| 406 | if (time_after_eq(jiffies, timeout)) { |
| 407 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", |
| 408 | name); |
| 409 | return -ETIME; |
| 410 | } |
| 411 | } |
| 412 | return 0; |
| 413 | } |
| 414 | |
| 415 | /* Card Send Command (to be used during frame rx) */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 416 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | sb1000_send_command(const int ioaddr[], const char* name, |
| 418 | const unsigned char out[]) |
| 419 | { |
| 420 | outb(out[2], ioaddr[0] + 1); |
| 421 | outb(out[3], ioaddr[0] + 2); |
| 422 | outb(out[4], ioaddr[0] + 3); |
| 423 | outb(out[5], ioaddr[0] + 4); |
| 424 | outb(out[1], ioaddr[0] + 5); |
| 425 | outb(out[0], ioaddr[0] + 7); |
| 426 | if (sb1000_debug > 3) |
| 427 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" |
| 428 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | /* Card Read Status (to be used during frame rx) */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 432 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | sb1000_read_status(const int ioaddr[], unsigned char in[]) |
| 434 | { |
| 435 | in[1] = inb(ioaddr[0] + 1); |
| 436 | in[2] = inb(ioaddr[0] + 2); |
| 437 | in[3] = inb(ioaddr[0] + 3); |
| 438 | in[4] = inb(ioaddr[0] + 4); |
| 439 | in[0] = inb(ioaddr[0] + 5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | /* Issue Read Command (to be used during frame rx) */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 443 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
| 445 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 446 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
| 448 | sb1000_wait_for_ready_clear(ioaddr, name); |
| 449 | outb(0xa0, ioaddr[0] + 6); |
| 450 | sb1000_send_command(ioaddr, name, Command0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | } |
| 452 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | /* |
| 455 | * SB1000 commands for open/configuration |
| 456 | */ |
| 457 | /* reset SB1000 card */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 458 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | sb1000_reset(const int ioaddr[], const char* name) |
| 460 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 461 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
| 462 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | unsigned char st[7]; |
| 464 | int port, status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
| 466 | port = ioaddr[1] + 6; |
| 467 | outb(0x4, port); |
| 468 | inb(port); |
| 469 | udelay(1000); |
| 470 | outb(0x0, port); |
| 471 | inb(port); |
Nishanth Aravamudan | a26c074 | 2005-06-20 23:54:27 +0200 | [diff] [blame] | 472 | ssleep(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | outb(0x4, port); |
| 474 | inb(port); |
| 475 | udelay(1000); |
| 476 | outb(0x0, port); |
| 477 | inb(port); |
| 478 | udelay(0); |
| 479 | |
| 480 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 481 | return status; |
| 482 | if (st[3] != 0xf0) |
| 483 | return -EIO; |
| 484 | return 0; |
| 485 | } |
| 486 | |
| 487 | /* check SB1000 firmware CRC */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 488 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | sb1000_check_CRC(const int ioaddr[], const char* name) |
| 490 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 491 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
| 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | unsigned char st[7]; |
| 494 | int crc, status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | /* check CRC */ |
| 497 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 498 | return status; |
| 499 | if (st[1] != st[3] || st[2] != st[4]) |
| 500 | return -EIO; |
| 501 | crc = st[1] << 8 | st[2]; |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | static inline int |
| 506 | sb1000_start_get_set_command(const int ioaddr[], const char* name) |
| 507 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 508 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
| 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | unsigned char st[7]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
| 512 | return card_send_command(ioaddr, name, Command0, st); |
| 513 | } |
| 514 | |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 515 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
| 517 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 518 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
| 519 | static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; |
| 520 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | unsigned char st[7]; |
| 522 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
| 524 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 525 | return status; |
| 526 | return card_send_command(ioaddr, name, Command1, st); |
| 527 | } |
| 528 | |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 529 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | sb1000_activate(const int ioaddr[], const char* name) |
| 531 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 532 | static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
| 533 | static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
| 534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | unsigned char st[7]; |
| 536 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | |
Nishanth Aravamudan | a26c074 | 2005-06-20 23:54:27 +0200 | [diff] [blame] | 538 | ssleep(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 540 | return status; |
| 541 | if ((status = card_send_command(ioaddr, name, Command1, st))) |
| 542 | return status; |
| 543 | if (st[3] != 0xf1) { |
| 544 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
| 545 | return status; |
| 546 | return -EIO; |
| 547 | } |
| 548 | udelay(1000); |
| 549 | return sb1000_start_get_set_command(ioaddr, name); |
| 550 | } |
| 551 | |
| 552 | /* get SB1000 firmware version */ |
| 553 | static int |
| 554 | sb1000_get_firmware_version(const int ioaddr[], const char* name, |
| 555 | unsigned char version[], int do_end) |
| 556 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 557 | static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
| 558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | unsigned char st[7]; |
| 560 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
| 562 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
| 563 | return status; |
| 564 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 565 | return status; |
| 566 | if (st[0] != 0xa3) |
| 567 | return -EIO; |
| 568 | version[0] = st[1]; |
| 569 | version[1] = st[2]; |
| 570 | if (do_end) |
| 571 | return sb1000_end_get_set_command(ioaddr, name); |
| 572 | else |
| 573 | return 0; |
| 574 | } |
| 575 | |
| 576 | /* get SB1000 frequency */ |
| 577 | static int |
| 578 | sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) |
| 579 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 580 | static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
| 581 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | unsigned char st[7]; |
| 583 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
| 585 | udelay(1000); |
| 586 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
| 587 | return status; |
| 588 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 589 | return status; |
| 590 | *frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; |
| 591 | return sb1000_end_get_set_command(ioaddr, name); |
| 592 | } |
| 593 | |
| 594 | /* set SB1000 frequency */ |
| 595 | static int |
| 596 | sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) |
| 597 | { |
| 598 | unsigned char st[7]; |
| 599 | int status; |
| 600 | unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; |
| 601 | |
| 602 | const int FrequencyLowerLimit = 57000; |
| 603 | const int FrequencyUpperLimit = 804000; |
| 604 | |
| 605 | if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { |
| 606 | printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " |
| 607 | "[%d,%d] kHz\n", name, frequency, FrequencyLowerLimit, |
| 608 | FrequencyUpperLimit); |
| 609 | return -EINVAL; |
| 610 | } |
| 611 | udelay(1000); |
| 612 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
| 613 | return status; |
| 614 | Command0[5] = frequency & 0xff; |
| 615 | frequency >>= 8; |
| 616 | Command0[4] = frequency & 0xff; |
| 617 | frequency >>= 8; |
| 618 | Command0[3] = frequency & 0xff; |
| 619 | frequency >>= 8; |
| 620 | Command0[2] = frequency & 0xff; |
| 621 | return card_send_command(ioaddr, name, Command0, st); |
| 622 | } |
| 623 | |
| 624 | /* get SB1000 PIDs */ |
| 625 | static int |
| 626 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) |
| 627 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 628 | static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; |
| 629 | static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; |
| 630 | static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; |
| 631 | static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; |
| 632 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | unsigned char st[7]; |
| 634 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
| 636 | udelay(1000); |
| 637 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
| 638 | return status; |
| 639 | |
| 640 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 641 | return status; |
| 642 | PID[0] = st[1] << 8 | st[2]; |
| 643 | |
| 644 | if ((status = card_send_command(ioaddr, name, Command1, st))) |
| 645 | return status; |
| 646 | PID[1] = st[1] << 8 | st[2]; |
| 647 | |
| 648 | if ((status = card_send_command(ioaddr, name, Command2, st))) |
| 649 | return status; |
| 650 | PID[2] = st[1] << 8 | st[2]; |
| 651 | |
| 652 | if ((status = card_send_command(ioaddr, name, Command3, st))) |
| 653 | return status; |
| 654 | PID[3] = st[1] << 8 | st[2]; |
| 655 | |
| 656 | return sb1000_end_get_set_command(ioaddr, name); |
| 657 | } |
| 658 | |
| 659 | /* set SB1000 PIDs */ |
| 660 | static int |
| 661 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) |
| 662 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 663 | static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
| 664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | unsigned char st[7]; |
| 666 | short p; |
| 667 | int status; |
| 668 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; |
| 669 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; |
| 670 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; |
| 671 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
| 673 | udelay(1000); |
| 674 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
| 675 | return status; |
| 676 | |
| 677 | p = PID[0]; |
| 678 | Command0[3] = p & 0xff; |
| 679 | p >>= 8; |
| 680 | Command0[2] = p & 0xff; |
| 681 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
| 682 | return status; |
| 683 | |
| 684 | p = PID[1]; |
| 685 | Command1[3] = p & 0xff; |
| 686 | p >>= 8; |
| 687 | Command1[2] = p & 0xff; |
| 688 | if ((status = card_send_command(ioaddr, name, Command1, st))) |
| 689 | return status; |
| 690 | |
| 691 | p = PID[2]; |
| 692 | Command2[3] = p & 0xff; |
| 693 | p >>= 8; |
| 694 | Command2[2] = p & 0xff; |
| 695 | if ((status = card_send_command(ioaddr, name, Command2, st))) |
| 696 | return status; |
| 697 | |
| 698 | p = PID[3]; |
| 699 | Command3[3] = p & 0xff; |
| 700 | p >>= 8; |
| 701 | Command3[2] = p & 0xff; |
| 702 | if ((status = card_send_command(ioaddr, name, Command3, st))) |
| 703 | return status; |
| 704 | |
| 705 | if ((status = card_send_command(ioaddr, name, Command4, st))) |
| 706 | return status; |
| 707 | return sb1000_end_get_set_command(ioaddr, name); |
| 708 | } |
| 709 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 710 | |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 711 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | sb1000_print_status_buffer(const char* name, unsigned char st[], |
| 713 | unsigned char buffer[], int size) |
| 714 | { |
| 715 | int i, j, k; |
| 716 | |
| 717 | printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); |
| 718 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { |
| 719 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " |
| 720 | "to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], |
| 721 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], |
| 722 | buffer[46] << 8 | buffer[47], |
| 723 | buffer[42], buffer[43], buffer[44], buffer[45], |
| 724 | buffer[48] << 8 | buffer[49]); |
| 725 | } else { |
| 726 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { |
| 727 | printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); |
| 728 | for (j = 0; j < 8 && k < size; j++, k++) |
| 729 | printk(" %02x", buffer[k]); |
| 730 | printk("\n"); |
| 731 | } |
| 732 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | } |
| 734 | |
| 735 | /* |
| 736 | * SB1000 commands for frame rx interrupt |
| 737 | */ |
| 738 | /* receive a single frame and assemble datagram |
| 739 | * (this is the heart of the interrupt routine) |
| 740 | */ |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 741 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | sb1000_rx(struct net_device *dev) |
| 743 | { |
| 744 | |
| 745 | #define FRAMESIZE 184 |
| 746 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; |
| 747 | short dlen; |
| 748 | int ioaddr, ns; |
| 749 | unsigned int skbsize; |
| 750 | struct sk_buff *skb; |
| 751 | struct sb1000_private *lp = netdev_priv(dev); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 752 | struct net_device_stats *stats = &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | |
| 754 | /* SB1000 frame constants */ |
| 755 | const int FrameSize = FRAMESIZE; |
| 756 | const int NewDatagramHeaderSkip = 8; |
| 757 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; |
| 758 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; |
| 759 | const int ContDatagramHeaderSkip = 7; |
| 760 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; |
| 761 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; |
| 762 | const int TrailerSize = 4; |
| 763 | |
| 764 | ioaddr = dev->base_addr; |
| 765 | |
| 766 | insw(ioaddr, (unsigned short*) st, 1); |
| 767 | #ifdef XXXDEBUG |
| 768 | printk("cm0: received: %02x %02x\n", st[0], st[1]); |
| 769 | #endif /* XXXDEBUG */ |
| 770 | lp->rx_frames++; |
| 771 | |
| 772 | /* decide if it is a good or bad frame */ |
| 773 | for (ns = 0; ns < NPIDS; ns++) { |
| 774 | session_id = lp->rx_session_id[ns]; |
| 775 | frame_id = lp->rx_frame_id[ns]; |
| 776 | if (st[0] == session_id) { |
| 777 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { |
| 778 | goto good_frame; |
| 779 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { |
| 780 | goto skipped_frame; |
| 781 | } else { |
| 782 | goto bad_frame; |
| 783 | } |
| 784 | } else if (st[0] == (session_id | 0x40)) { |
| 785 | if ((st[1] & 0xf0) == 0x30) { |
| 786 | goto skipped_frame; |
| 787 | } else { |
| 788 | goto bad_frame; |
| 789 | } |
| 790 | } |
| 791 | } |
| 792 | goto bad_frame; |
| 793 | |
| 794 | skipped_frame: |
| 795 | stats->rx_frame_errors++; |
| 796 | skb = lp->rx_skb[ns]; |
| 797 | if (sb1000_debug > 1) |
| 798 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " |
| 799 | "expecting %02x %02x\n", dev->name, st[0], st[1], |
| 800 | skb ? session_id : session_id | 0x40, frame_id); |
| 801 | if (skb) { |
| 802 | dev_kfree_skb(skb); |
| 803 | skb = NULL; |
| 804 | } |
| 805 | |
| 806 | good_frame: |
| 807 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); |
| 808 | /* new datagram */ |
| 809 | if (st[0] & 0x40) { |
| 810 | /* get data length */ |
| 811 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); |
| 812 | #ifdef XXXDEBUG |
| 813 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); |
| 814 | #endif /* XXXDEBUG */ |
| 815 | if (buffer[0] != NewDatagramHeaderSkip) { |
| 816 | if (sb1000_debug > 1) |
| 817 | printk(KERN_WARNING "%s: new datagram header skip error: " |
| 818 | "got %02x expecting %02x\n", dev->name, buffer[0], |
| 819 | NewDatagramHeaderSkip); |
| 820 | stats->rx_length_errors++; |
| 821 | insw(ioaddr, buffer, NewDatagramDataSize / 2); |
| 822 | goto bad_frame_next; |
| 823 | } |
| 824 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | |
| 825 | buffer[NewDatagramHeaderSkip + 4]) - 17; |
| 826 | if (dlen > SB1000_MRU) { |
| 827 | if (sb1000_debug > 1) |
| 828 | printk(KERN_WARNING "%s: datagram length (%d) greater " |
| 829 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); |
| 830 | stats->rx_length_errors++; |
| 831 | insw(ioaddr, buffer, NewDatagramDataSize / 2); |
| 832 | goto bad_frame_next; |
| 833 | } |
| 834 | lp->rx_dlen[ns] = dlen; |
| 835 | /* compute size to allocate for datagram */ |
| 836 | skbsize = dlen + FrameSize; |
| 837 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { |
| 838 | if (sb1000_debug > 1) |
| 839 | printk(KERN_WARNING "%s: can't allocate %d bytes long " |
| 840 | "skbuff\n", dev->name, skbsize); |
| 841 | stats->rx_dropped++; |
| 842 | insw(ioaddr, buffer, NewDatagramDataSize / 2); |
| 843 | goto dropped_frame; |
| 844 | } |
| 845 | skb->dev = dev; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 846 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
| 848 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), |
| 849 | NewDatagramDataSize / 2); |
| 850 | lp->rx_skb[ns] = skb; |
| 851 | } else { |
| 852 | /* continuation of previous datagram */ |
| 853 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); |
| 854 | if (buffer[0] != ContDatagramHeaderSkip) { |
| 855 | if (sb1000_debug > 1) |
| 856 | printk(KERN_WARNING "%s: cont datagram header skip error: " |
| 857 | "got %02x expecting %02x\n", dev->name, buffer[0], |
| 858 | ContDatagramHeaderSkip); |
| 859 | stats->rx_length_errors++; |
| 860 | insw(ioaddr, buffer, ContDatagramDataSize / 2); |
| 861 | goto bad_frame_next; |
| 862 | } |
| 863 | skb = lp->rx_skb[ns]; |
| 864 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), |
| 865 | ContDatagramDataSize / 2); |
| 866 | dlen = lp->rx_dlen[ns]; |
| 867 | } |
| 868 | if (skb->len < dlen + TrailerSize) { |
| 869 | lp->rx_session_id[ns] &= ~0x40; |
| 870 | return 0; |
| 871 | } |
| 872 | |
| 873 | /* datagram completed: send to upper level */ |
| 874 | skb_trim(skb, dlen); |
| 875 | netif_rx(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | stats->rx_bytes+=dlen; |
| 877 | stats->rx_packets++; |
| 878 | lp->rx_skb[ns] = NULL; |
| 879 | lp->rx_session_id[ns] |= 0x40; |
| 880 | return 0; |
| 881 | |
| 882 | bad_frame: |
| 883 | insw(ioaddr, buffer, FrameSize / 2); |
| 884 | if (sb1000_debug > 1) |
| 885 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n", |
| 886 | dev->name, st[0], st[1]); |
| 887 | stats->rx_frame_errors++; |
| 888 | bad_frame_next: |
| 889 | if (sb1000_debug > 2) |
| 890 | sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); |
| 891 | dropped_frame: |
| 892 | stats->rx_errors++; |
| 893 | if (ns < NPIDS) { |
| 894 | if ((skb = lp->rx_skb[ns])) { |
| 895 | dev_kfree_skb(skb); |
| 896 | lp->rx_skb[ns] = NULL; |
| 897 | } |
| 898 | lp->rx_session_id[ns] |= 0x40; |
| 899 | } |
| 900 | return -1; |
| 901 | } |
| 902 | |
Denys Vlasenko | a8d0634 | 2008-03-31 01:02:43 +0200 | [diff] [blame] | 903 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | sb1000_error_dpc(struct net_device *dev) |
| 905 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 906 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
| 907 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | char *name; |
| 909 | unsigned char st[5]; |
| 910 | int ioaddr[2]; |
| 911 | struct sb1000_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | const int ErrorDpcCounterInitialize = 200; |
| 913 | |
| 914 | ioaddr[0] = dev->base_addr; |
| 915 | /* mem_start holds the second I/O address */ |
| 916 | ioaddr[1] = dev->mem_start; |
| 917 | name = dev->name; |
| 918 | |
| 919 | sb1000_wait_for_ready_clear(ioaddr, name); |
| 920 | sb1000_send_command(ioaddr, name, Command0); |
| 921 | sb1000_wait_for_ready(ioaddr, name); |
| 922 | sb1000_read_status(ioaddr, st); |
| 923 | if (st[1] & 0x10) |
| 924 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | } |
| 926 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 927 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | /* |
| 929 | * Linux interface functions |
| 930 | */ |
| 931 | static int |
| 932 | sb1000_open(struct net_device *dev) |
| 933 | { |
| 934 | char *name; |
| 935 | int ioaddr[2], status; |
| 936 | struct sb1000_private *lp = netdev_priv(dev); |
| 937 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; |
| 938 | |
| 939 | ioaddr[0] = dev->base_addr; |
| 940 | /* mem_start holds the second I/O address */ |
| 941 | ioaddr[1] = dev->mem_start; |
| 942 | name = dev->name; |
| 943 | |
| 944 | /* initialize sb1000 */ |
| 945 | if ((status = sb1000_reset(ioaddr, name))) |
| 946 | return status; |
Nishanth Aravamudan | a26c074 | 2005-06-20 23:54:27 +0200 | [diff] [blame] | 947 | ssleep(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | if ((status = sb1000_check_CRC(ioaddr, name))) |
| 949 | return status; |
| 950 | |
| 951 | /* initialize private data before board can catch interrupts */ |
| 952 | lp->rx_skb[0] = NULL; |
| 953 | lp->rx_skb[1] = NULL; |
| 954 | lp->rx_skb[2] = NULL; |
| 955 | lp->rx_skb[3] = NULL; |
| 956 | lp->rx_dlen[0] = 0; |
| 957 | lp->rx_dlen[1] = 0; |
| 958 | lp->rx_dlen[2] = 0; |
| 959 | lp->rx_dlen[3] = 0; |
| 960 | lp->rx_frames = 0; |
| 961 | lp->rx_error_count = 0; |
| 962 | lp->rx_error_dpc_count = 0; |
| 963 | lp->rx_session_id[0] = 0x50; |
Julia Lawall | d58c0e9 | 2010-10-26 00:25:34 +0000 | [diff] [blame] | 964 | lp->rx_session_id[1] = 0x48; |
| 965 | lp->rx_session_id[2] = 0x44; |
| 966 | lp->rx_session_id[3] = 0x42; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | lp->rx_frame_id[0] = 0; |
| 968 | lp->rx_frame_id[1] = 0; |
| 969 | lp->rx_frame_id[2] = 0; |
| 970 | lp->rx_frame_id[3] = 0; |
Joe Perches | a0607fd | 2009-11-18 23:29:17 -0800 | [diff] [blame] | 971 | if (request_irq(dev->irq, sb1000_interrupt, 0, "sb1000", dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | return -EAGAIN; |
| 973 | } |
| 974 | |
| 975 | if (sb1000_debug > 2) |
| 976 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); |
| 977 | |
| 978 | /* Activate board and check firmware version */ |
| 979 | udelay(1000); |
| 980 | if ((status = sb1000_activate(ioaddr, name))) |
| 981 | return status; |
| 982 | udelay(0); |
| 983 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) |
| 984 | return status; |
| 985 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) |
| 986 | printk(KERN_WARNING "%s: found firmware version %x.%02x " |
| 987 | "(should be %x.%02x)\n", name, version[0], version[1], |
| 988 | FirmwareVersion[0], FirmwareVersion[1]); |
| 989 | |
| 990 | |
| 991 | netif_start_queue(dev); |
| 992 | return 0; /* Always succeed */ |
| 993 | } |
| 994 | |
| 995 | static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 996 | { |
| 997 | char* name; |
| 998 | unsigned char version[2]; |
| 999 | short PID[4]; |
| 1000 | int ioaddr[2], status, frequency; |
| 1001 | unsigned int stats[5]; |
| 1002 | struct sb1000_private *lp = netdev_priv(dev); |
| 1003 | |
| 1004 | if (!(dev && dev->flags & IFF_UP)) |
| 1005 | return -ENODEV; |
| 1006 | |
| 1007 | ioaddr[0] = dev->base_addr; |
| 1008 | /* mem_start holds the second I/O address */ |
| 1009 | ioaddr[1] = dev->mem_start; |
| 1010 | name = dev->name; |
| 1011 | |
| 1012 | switch (cmd) { |
| 1013 | case SIOCGCMSTATS: /* get statistics */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1014 | stats[0] = dev->stats.rx_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | stats[1] = lp->rx_frames; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1016 | stats[2] = dev->stats.rx_packets; |
| 1017 | stats[3] = dev->stats.rx_errors; |
| 1018 | stats[4] = dev->stats.rx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) |
| 1020 | return -EFAULT; |
| 1021 | status = 0; |
| 1022 | break; |
| 1023 | |
| 1024 | case SIOCGCMFIRMWARE: /* get firmware version */ |
| 1025 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) |
| 1026 | return status; |
| 1027 | if(copy_to_user(ifr->ifr_data, version, sizeof(version))) |
| 1028 | return -EFAULT; |
| 1029 | break; |
| 1030 | |
| 1031 | case SIOCGCMFREQUENCY: /* get frequency */ |
| 1032 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) |
| 1033 | return status; |
| 1034 | if(put_user(frequency, (int __user *) ifr->ifr_data)) |
| 1035 | return -EFAULT; |
| 1036 | break; |
| 1037 | |
| 1038 | case SIOCSCMFREQUENCY: /* set frequency */ |
| 1039 | if (!capable(CAP_NET_ADMIN)) |
| 1040 | return -EPERM; |
| 1041 | if(get_user(frequency, (int __user *) ifr->ifr_data)) |
| 1042 | return -EFAULT; |
| 1043 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) |
| 1044 | return status; |
| 1045 | break; |
| 1046 | |
| 1047 | case SIOCGCMPIDS: /* get PIDs */ |
| 1048 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) |
| 1049 | return status; |
| 1050 | if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) |
| 1051 | return -EFAULT; |
| 1052 | break; |
| 1053 | |
| 1054 | case SIOCSCMPIDS: /* set PIDs */ |
| 1055 | if (!capable(CAP_NET_ADMIN)) |
| 1056 | return -EPERM; |
| 1057 | if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) |
| 1058 | return -EFAULT; |
| 1059 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) |
| 1060 | return status; |
| 1061 | /* set session_id, frame_id and pkt_type too */ |
| 1062 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); |
| 1063 | lp->rx_session_id[1] = 0x48; |
| 1064 | lp->rx_session_id[2] = 0x44; |
| 1065 | lp->rx_session_id[3] = 0x42; |
| 1066 | lp->rx_frame_id[0] = 0; |
| 1067 | lp->rx_frame_id[1] = 0; |
| 1068 | lp->rx_frame_id[2] = 0; |
| 1069 | lp->rx_frame_id[3] = 0; |
| 1070 | break; |
| 1071 | |
| 1072 | default: |
| 1073 | status = -EINVAL; |
| 1074 | break; |
| 1075 | } |
| 1076 | return status; |
| 1077 | } |
| 1078 | |
| 1079 | /* transmit function: do nothing since SB1000 can't send anything out */ |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 1080 | static netdev_tx_t |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 1082 | { |
| 1083 | printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); |
| 1084 | /* sb1000 can't xmit datagrams */ |
| 1085 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1086 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | } |
| 1088 | |
| 1089 | /* SB1000 interrupt handler. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1090 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | { |
Denys Vlasenko | 7dd73bb | 2008-03-31 01:13:00 +0200 | [diff] [blame] | 1092 | static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
| 1093 | static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
| 1094 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | char *name; |
| 1096 | unsigned char st; |
| 1097 | int ioaddr[2]; |
Jeff Garzik | c31f28e | 2006-10-06 14:56:04 -0400 | [diff] [blame] | 1098 | struct net_device *dev = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | struct sb1000_private *lp = netdev_priv(dev); |
| 1100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | const int MaxRxErrorCount = 6; |
| 1102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | ioaddr[0] = dev->base_addr; |
| 1104 | /* mem_start holds the second I/O address */ |
| 1105 | ioaddr[1] = dev->mem_start; |
| 1106 | name = dev->name; |
| 1107 | |
| 1108 | /* is it a good interrupt? */ |
| 1109 | st = inb(ioaddr[1] + 6); |
| 1110 | if (!(st & 0x08 && st & 0x20)) { |
| 1111 | return IRQ_NONE; |
| 1112 | } |
| 1113 | |
| 1114 | if (sb1000_debug > 3) |
| 1115 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); |
| 1116 | |
| 1117 | st = inb(ioaddr[0] + 7); |
| 1118 | if (sb1000_rx(dev)) |
| 1119 | lp->rx_error_count++; |
| 1120 | #ifdef SB1000_DELAY |
| 1121 | udelay(SB1000_DELAY); |
| 1122 | #endif /* SB1000_DELAY */ |
| 1123 | sb1000_issue_read_command(ioaddr, name); |
| 1124 | if (st & 0x01) { |
| 1125 | sb1000_error_dpc(dev); |
| 1126 | sb1000_issue_read_command(ioaddr, name); |
| 1127 | } |
| 1128 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { |
| 1129 | sb1000_wait_for_ready_clear(ioaddr, name); |
| 1130 | sb1000_send_command(ioaddr, name, Command0); |
| 1131 | sb1000_wait_for_ready(ioaddr, name); |
| 1132 | sb1000_issue_read_command(ioaddr, name); |
| 1133 | } |
| 1134 | if (lp->rx_error_count >= MaxRxErrorCount) { |
| 1135 | sb1000_wait_for_ready_clear(ioaddr, name); |
| 1136 | sb1000_send_command(ioaddr, name, Command1); |
| 1137 | sb1000_wait_for_ready(ioaddr, name); |
| 1138 | sb1000_issue_read_command(ioaddr, name); |
| 1139 | lp->rx_error_count = 0; |
| 1140 | } |
| 1141 | |
| 1142 | return IRQ_HANDLED; |
| 1143 | } |
| 1144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | static int sb1000_close(struct net_device *dev) |
| 1146 | { |
| 1147 | int i; |
| 1148 | int ioaddr[2]; |
| 1149 | struct sb1000_private *lp = netdev_priv(dev); |
| 1150 | |
| 1151 | if (sb1000_debug > 2) |
| 1152 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); |
| 1153 | |
| 1154 | netif_stop_queue(dev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | ioaddr[0] = dev->base_addr; |
| 1157 | /* mem_start holds the second I/O address */ |
| 1158 | ioaddr[1] = dev->mem_start; |
| 1159 | |
| 1160 | free_irq(dev->irq, dev); |
| 1161 | /* If we don't do this, we can't re-insmod it later. */ |
| 1162 | release_region(ioaddr[1], SB1000_IO_EXTENT); |
| 1163 | release_region(ioaddr[0], SB1000_IO_EXTENT); |
| 1164 | |
| 1165 | /* free rx_skb's if needed */ |
| 1166 | for (i=0; i<4; i++) { |
| 1167 | if (lp->rx_skb[i]) { |
| 1168 | dev_kfree_skb(lp->rx_skb[i]); |
| 1169 | } |
| 1170 | } |
| 1171 | return 0; |
| 1172 | } |
| 1173 | |
| 1174 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); |
| 1175 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); |
| 1176 | MODULE_LICENSE("GPL"); |
| 1177 | |
Peter Huewe | ed03538 | 2015-03-16 21:46:35 +0100 | [diff] [blame^] | 1178 | module_pnp_driver(sb1000_driver); |