Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * tms380tr.c: A network driver library for Texas Instruments TMS380-based |
| 3 | * Token Ring Adapters. |
| 4 | * |
| 5 | * Originally sktr.c: Written 1997 by Christoph Goos |
| 6 | * |
| 7 | * A fine result of the Linux Systems Network Architecture Project. |
| 8 | * http://www.linux-sna.org |
| 9 | * |
| 10 | * This software may be used and distributed according to the terms |
| 11 | * of the GNU General Public License, incorporated herein by reference. |
| 12 | * |
| 13 | * The following modules are currently available for card support: |
| 14 | * - tmspci (Generic PCI card support) |
| 15 | * - abyss (Madge PCI support) |
| 16 | * - tmsisa (SysKonnect TR4/16 ISA) |
| 17 | * |
| 18 | * Sources: |
| 19 | * - The hardware related parts of this driver are take from |
| 20 | * the SysKonnect Token Ring driver for Windows NT. |
| 21 | * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this |
| 22 | * driver, as well as the 'skeleton.c' driver by Donald Becker. |
| 23 | * - Also various other drivers in the linux source tree were taken |
| 24 | * as samples for some tasks. |
| 25 | * - TI TMS380 Second-Generation Token Ring User's Guide |
| 26 | * - TI datasheets for respective chips |
| 27 | * - David Hein at Texas Instruments |
| 28 | * - Various Madge employees |
| 29 | * |
| 30 | * Maintainer(s): |
| 31 | * JS Jay Schulist jschlst@samba.org |
| 32 | * CG Christoph Goos cgoos@syskonnect.de |
| 33 | * AF Adam Fritzler mid@auk.cx |
| 34 | * MLP Mike Phillips phillim@amtrak.com |
| 35 | * JF Jochen Friedrich jochen@scram.de |
| 36 | * |
| 37 | * Modification History: |
| 38 | * 29-Aug-97 CG Created |
| 39 | * 04-Apr-98 CG Fixed problems caused by tok_timer_check |
| 40 | * 10-Apr-98 CG Fixed lockups at cable disconnection |
| 41 | * 27-May-98 JS Formated to Linux Kernel Format |
| 42 | * 31-May-98 JS Hacked in PCI support |
| 43 | * 16-Jun-98 JS Modulized for multiple cards with one driver |
| 44 | * Sep-99 AF Renamed to tms380tr (supports more than SK's) |
| 45 | * 23-Sep-99 AF Added Compaq and Thomas-Conrad PCI support |
| 46 | * Fixed a bug causing double copies on PCI |
| 47 | * Fixed for new multicast stuff (2.2/2.3) |
| 48 | * 25-Sep-99 AF Uped TPL_NUM from 3 to 9 |
| 49 | * Removed extraneous 'No free TPL' |
| 50 | * 22-Dec-99 AF Added Madge PCI Mk2 support and generalized |
| 51 | * parts of the initilization procedure. |
| 52 | * 30-Dec-99 AF Turned tms380tr into a library ala 8390. |
| 53 | * Madge support is provided in the abyss module |
| 54 | * Generic PCI support is in the tmspci module. |
| 55 | * 30-Nov-00 JF Updated PCI code to support IO MMU via |
| 56 | * pci_map_static(). Alpha uses this MMU for ISA |
| 57 | * as well. |
| 58 | * 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some |
| 59 | * cleanup. |
| 60 | * 13-Jan-02 JF Add spinlock to fix race condition. |
| 61 | * 09-Nov-02 JF Fixed printks to not SPAM the console during |
| 62 | * normal operation. |
| 63 | * 30-Dec-02 JF Removed incorrect __init from |
| 64 | * tms380tr_init_card. |
| 65 | * |
| 66 | * To do: |
| 67 | * 1. Multi/Broadcast packet handling (this may have fixed itself) |
| 68 | * 2. Write a sktrisa module that includes the old ISA support (done) |
| 69 | * 3. Allow modules to load their own microcode |
| 70 | * 4. Speed up the BUD process -- freezing the kernel for 3+sec is |
| 71 | * quite unacceptable. |
| 72 | * 5. Still a few remaining stalls when the cable is unplugged. |
| 73 | */ |
| 74 | |
| 75 | #ifdef MODULE |
| 76 | static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n"; |
| 77 | #endif |
| 78 | |
| 79 | #include <linux/module.h> |
| 80 | #include <linux/kernel.h> |
| 81 | #include <linux/types.h> |
| 82 | #include <linux/fcntl.h> |
| 83 | #include <linux/interrupt.h> |
| 84 | #include <linux/ptrace.h> |
| 85 | #include <linux/ioport.h> |
| 86 | #include <linux/in.h> |
| 87 | #include <linux/slab.h> |
| 88 | #include <linux/string.h> |
| 89 | #include <linux/time.h> |
| 90 | #include <linux/errno.h> |
| 91 | #include <linux/init.h> |
| 92 | #include <linux/pci.h> |
| 93 | #include <linux/delay.h> |
| 94 | #include <linux/netdevice.h> |
| 95 | #include <linux/etherdevice.h> |
| 96 | #include <linux/skbuff.h> |
| 97 | #include <linux/trdevice.h> |
| 98 | #include <linux/firmware.h> |
| 99 | #include <linux/bitops.h> |
| 100 | |
| 101 | #include <asm/system.h> |
| 102 | #include <asm/io.h> |
| 103 | #include <asm/dma.h> |
| 104 | #include <asm/irq.h> |
| 105 | #include <asm/uaccess.h> |
| 106 | |
| 107 | #include "tms380tr.h" /* Our Stuff */ |
| 108 | |
| 109 | /* Use 0 for production, 1 for verification, 2 for debug, and |
| 110 | * 3 for very verbose debug. |
| 111 | */ |
| 112 | #ifndef TMS380TR_DEBUG |
| 113 | #define TMS380TR_DEBUG 0 |
| 114 | #endif |
| 115 | static unsigned int tms380tr_debug = TMS380TR_DEBUG; |
| 116 | |
| 117 | static struct device tms_device; |
| 118 | |
| 119 | /* Index to functions, as function prototypes. |
| 120 | * Alphabetical by function name. |
| 121 | */ |
| 122 | |
| 123 | /* "A" */ |
| 124 | /* "B" */ |
| 125 | static int tms380tr_bringup_diags(struct net_device *dev); |
| 126 | /* "C" */ |
| 127 | static void tms380tr_cancel_tx_queue(struct net_local* tp); |
| 128 | static int tms380tr_chipset_init(struct net_device *dev); |
| 129 | static void tms380tr_chk_irq(struct net_device *dev); |
| 130 | static void tms380tr_chk_outstanding_cmds(struct net_device *dev); |
| 131 | static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr); |
| 132 | static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType); |
| 133 | int tms380tr_close(struct net_device *dev); |
| 134 | static void tms380tr_cmd_status_irq(struct net_device *dev); |
| 135 | /* "D" */ |
| 136 | static void tms380tr_disable_interrupts(struct net_device *dev); |
| 137 | #if TMS380TR_DEBUG > 0 |
| 138 | static void tms380tr_dump(unsigned char *Data, int length); |
| 139 | #endif |
| 140 | /* "E" */ |
| 141 | static void tms380tr_enable_interrupts(struct net_device *dev); |
| 142 | static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command); |
| 143 | static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue); |
| 144 | /* "F" */ |
| 145 | /* "G" */ |
| 146 | static struct net_device_stats *tms380tr_get_stats(struct net_device *dev); |
| 147 | /* "H" */ |
| 148 | static int tms380tr_hardware_send_packet(struct sk_buff *skb, |
| 149 | struct net_device *dev); |
| 150 | /* "I" */ |
| 151 | static int tms380tr_init_adapter(struct net_device *dev); |
| 152 | static void tms380tr_init_ipb(struct net_local *tp); |
| 153 | static void tms380tr_init_net_local(struct net_device *dev); |
| 154 | static void tms380tr_init_opb(struct net_device *dev); |
| 155 | /* "M" */ |
| 156 | /* "O" */ |
| 157 | int tms380tr_open(struct net_device *dev); |
| 158 | static void tms380tr_open_adapter(struct net_device *dev); |
| 159 | /* "P" */ |
| 160 | /* "R" */ |
| 161 | static void tms380tr_rcv_status_irq(struct net_device *dev); |
| 162 | static int tms380tr_read_ptr(struct net_device *dev); |
| 163 | static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data, |
| 164 | unsigned short Address, int Length); |
| 165 | static int tms380tr_reset_adapter(struct net_device *dev); |
| 166 | static void tms380tr_reset_interrupt(struct net_device *dev); |
| 167 | static void tms380tr_ring_status_irq(struct net_device *dev); |
| 168 | /* "S" */ |
| 169 | static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev); |
| 170 | static void tms380tr_set_multicast_list(struct net_device *dev); |
| 171 | static int tms380tr_set_mac_address(struct net_device *dev, void *addr); |
| 172 | /* "T" */ |
| 173 | static void tms380tr_timer_chk(unsigned long data); |
| 174 | static void tms380tr_timer_end_wait(unsigned long data); |
| 175 | static void tms380tr_tx_status_irq(struct net_device *dev); |
| 176 | /* "U" */ |
| 177 | static void tms380tr_update_rcv_stats(struct net_local *tp, |
| 178 | unsigned char DataPtr[], unsigned int Length); |
| 179 | /* "W" */ |
| 180 | void tms380tr_wait(unsigned long time); |
| 181 | static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status); |
| 182 | static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status); |
| 183 | |
| 184 | #define SIFREADB(reg) (((struct net_local *)dev->priv)->sifreadb(dev, reg)) |
| 185 | #define SIFWRITEB(val, reg) (((struct net_local *)dev->priv)->sifwriteb(dev, val, reg)) |
| 186 | #define SIFREADW(reg) (((struct net_local *)dev->priv)->sifreadw(dev, reg)) |
| 187 | #define SIFWRITEW(val, reg) (((struct net_local *)dev->priv)->sifwritew(dev, val, reg)) |
| 188 | |
| 189 | |
| 190 | |
| 191 | #if 0 /* TMS380TR_DEBUG > 0 */ |
| 192 | static int madgemc_sifprobe(struct net_device *dev) |
| 193 | { |
| 194 | unsigned char old, chk1, chk2; |
| 195 | |
| 196 | old = SIFREADB(SIFADR); /* Get the old SIFADR value */ |
| 197 | |
| 198 | chk1 = 0; /* Begin with check value 0 */ |
| 199 | do { |
| 200 | madgemc_setregpage(dev, 0); |
| 201 | /* Write new SIFADR value */ |
| 202 | SIFWRITEB(chk1, SIFADR); |
| 203 | chk2 = SIFREADB(SIFADR); |
| 204 | if (chk2 != chk1) |
| 205 | return -1; |
| 206 | |
| 207 | madgemc_setregpage(dev, 1); |
| 208 | /* Read, invert and write */ |
| 209 | chk2 = SIFREADB(SIFADD); |
| 210 | if (chk2 != chk1) |
| 211 | return -1; |
| 212 | |
| 213 | madgemc_setregpage(dev, 0); |
| 214 | chk2 ^= 0x0FE; |
| 215 | SIFWRITEB(chk2, SIFADR); |
| 216 | |
| 217 | /* Read, invert and compare */ |
| 218 | madgemc_setregpage(dev, 1); |
| 219 | chk2 = SIFREADB(SIFADD); |
| 220 | madgemc_setregpage(dev, 0); |
| 221 | chk2 ^= 0x0FE; |
| 222 | |
| 223 | if(chk1 != chk2) |
| 224 | return (-1); /* No adapter */ |
| 225 | chk1 -= 2; |
| 226 | } while(chk1 != 0); /* Repeat 128 times (all byte values) */ |
| 227 | |
| 228 | madgemc_setregpage(dev, 0); /* sanity */ |
| 229 | /* Restore the SIFADR value */ |
| 230 | SIFWRITEB(old, SIFADR); |
| 231 | |
| 232 | return (0); |
| 233 | } |
| 234 | #endif |
| 235 | |
| 236 | /* |
| 237 | * Open/initialize the board. This is called sometime after |
| 238 | * booting when the 'ifconfig' program is run. |
| 239 | * |
| 240 | * This routine should set everything up anew at each open, even |
| 241 | * registers that "should" only need to be set once at boot, so that |
| 242 | * there is non-reboot way to recover if something goes wrong. |
| 243 | */ |
| 244 | int tms380tr_open(struct net_device *dev) |
| 245 | { |
| 246 | struct net_local *tp = netdev_priv(dev); |
| 247 | int err; |
| 248 | |
| 249 | /* init the spinlock */ |
| 250 | spin_lock_init(&tp->lock); |
| 251 | init_timer(&tp->timer); |
| 252 | |
| 253 | /* Reset the hardware here. Don't forget to set the station address. */ |
| 254 | |
| 255 | #ifdef CONFIG_ISA |
| 256 | if(dev->dma > 0) |
| 257 | { |
| 258 | unsigned long flags=claim_dma_lock(); |
| 259 | disable_dma(dev->dma); |
| 260 | set_dma_mode(dev->dma, DMA_MODE_CASCADE); |
| 261 | enable_dma(dev->dma); |
| 262 | release_dma_lock(flags); |
| 263 | } |
| 264 | #endif |
| 265 | |
| 266 | err = tms380tr_chipset_init(dev); |
| 267 | if(err) |
| 268 | { |
| 269 | printk(KERN_INFO "%s: Chipset initialization error\n", |
| 270 | dev->name); |
| 271 | return (-1); |
| 272 | } |
| 273 | |
| 274 | tp->timer.expires = jiffies + 30*HZ; |
| 275 | tp->timer.function = tms380tr_timer_end_wait; |
| 276 | tp->timer.data = (unsigned long)dev; |
| 277 | add_timer(&tp->timer); |
| 278 | |
| 279 | printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n", |
| 280 | dev->name, tms380tr_read_ptr(dev)); |
| 281 | |
| 282 | tms380tr_enable_interrupts(dev); |
| 283 | tms380tr_open_adapter(dev); |
| 284 | |
| 285 | netif_start_queue(dev); |
| 286 | |
| 287 | /* Wait for interrupt from hardware. If interrupt does not come, |
| 288 | * there will be a timeout from the timer. |
| 289 | */ |
| 290 | tp->Sleeping = 1; |
| 291 | interruptible_sleep_on(&tp->wait_for_tok_int); |
| 292 | del_timer(&tp->timer); |
| 293 | |
| 294 | /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */ |
| 295 | if(tp->AdapterVirtOpenFlag == 0) |
| 296 | { |
| 297 | tms380tr_disable_interrupts(dev); |
| 298 | return (-1); |
| 299 | } |
| 300 | |
| 301 | tp->StartTime = jiffies; |
| 302 | |
| 303 | /* Start function control timer */ |
| 304 | tp->timer.expires = jiffies + 2*HZ; |
| 305 | tp->timer.function = tms380tr_timer_chk; |
| 306 | tp->timer.data = (unsigned long)dev; |
| 307 | add_timer(&tp->timer); |
| 308 | |
| 309 | return (0); |
| 310 | } |
| 311 | |
| 312 | /* |
| 313 | * Timeout function while waiting for event |
| 314 | */ |
| 315 | static void tms380tr_timer_end_wait(unsigned long data) |
| 316 | { |
| 317 | struct net_device *dev = (struct net_device*)data; |
| 318 | struct net_local *tp = netdev_priv(dev); |
| 319 | |
| 320 | if(tp->Sleeping) |
| 321 | { |
| 322 | tp->Sleeping = 0; |
| 323 | wake_up_interruptible(&tp->wait_for_tok_int); |
| 324 | } |
| 325 | |
| 326 | return; |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Initialize the chipset |
| 331 | */ |
| 332 | static int tms380tr_chipset_init(struct net_device *dev) |
| 333 | { |
| 334 | struct net_local *tp = netdev_priv(dev); |
| 335 | int err; |
| 336 | |
| 337 | tms380tr_init_ipb(tp); |
| 338 | tms380tr_init_opb(dev); |
| 339 | tms380tr_init_net_local(dev); |
| 340 | |
| 341 | if(tms380tr_debug > 3) |
| 342 | printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name); |
| 343 | err = tms380tr_reset_adapter(dev); |
| 344 | if(err < 0) |
| 345 | return (-1); |
| 346 | |
| 347 | if(tms380tr_debug > 3) |
| 348 | printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name); |
| 349 | err = tms380tr_bringup_diags(dev); |
| 350 | if(err < 0) |
| 351 | return (-1); |
| 352 | |
| 353 | if(tms380tr_debug > 3) |
| 354 | printk(KERN_DEBUG "%s: Init adapter...\n", dev->name); |
| 355 | err = tms380tr_init_adapter(dev); |
| 356 | if(err < 0) |
| 357 | return (-1); |
| 358 | |
| 359 | if(tms380tr_debug > 3) |
| 360 | printk(KERN_DEBUG "%s: Done!\n", dev->name); |
| 361 | return (0); |
| 362 | } |
| 363 | |
| 364 | /* |
| 365 | * Initializes the net_local structure. |
| 366 | */ |
| 367 | static void tms380tr_init_net_local(struct net_device *dev) |
| 368 | { |
| 369 | struct net_local *tp = netdev_priv(dev); |
| 370 | int i; |
| 371 | dma_addr_t dmabuf; |
| 372 | |
| 373 | tp->scb.CMD = 0; |
| 374 | tp->scb.Parm[0] = 0; |
| 375 | tp->scb.Parm[1] = 0; |
| 376 | |
| 377 | tp->ssb.STS = 0; |
| 378 | tp->ssb.Parm[0] = 0; |
| 379 | tp->ssb.Parm[1] = 0; |
| 380 | tp->ssb.Parm[2] = 0; |
| 381 | |
| 382 | tp->CMDqueue = 0; |
| 383 | |
| 384 | tp->AdapterOpenFlag = 0; |
| 385 | tp->AdapterVirtOpenFlag = 0; |
| 386 | tp->ScbInUse = 0; |
| 387 | tp->OpenCommandIssued = 0; |
| 388 | tp->ReOpenInProgress = 0; |
| 389 | tp->HaltInProgress = 0; |
| 390 | tp->TransmitHaltScheduled = 0; |
| 391 | tp->LobeWireFaultLogged = 0; |
| 392 | tp->LastOpenStatus = 0; |
| 393 | tp->MaxPacketSize = DEFAULT_PACKET_SIZE; |
| 394 | |
| 395 | /* Create circular chain of transmit lists */ |
| 396 | for (i = 0; i < TPL_NUM; i++) |
| 397 | { |
| 398 | tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */ |
| 399 | tp->Tpl[i].Status = 0; |
| 400 | tp->Tpl[i].FrameSize = 0; |
| 401 | tp->Tpl[i].FragList[0].DataCount = 0; |
| 402 | tp->Tpl[i].FragList[0].DataAddr = 0; |
| 403 | tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM]; |
| 404 | tp->Tpl[i].MData = NULL; |
| 405 | tp->Tpl[i].TPLIndex = i; |
| 406 | tp->Tpl[i].DMABuff = 0; |
| 407 | tp->Tpl[i].BusyFlag = 0; |
| 408 | } |
| 409 | |
| 410 | tp->TplFree = tp->TplBusy = &tp->Tpl[0]; |
| 411 | |
| 412 | /* Create circular chain of receive lists */ |
| 413 | for (i = 0; i < RPL_NUM; i++) |
| 414 | { |
| 415 | tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */ |
| 416 | tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ); |
| 417 | tp->Rpl[i].FrameSize = 0; |
| 418 | tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize); |
| 419 | |
| 420 | /* Alloc skb and point adapter to data area */ |
| 421 | tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize); |
| 422 | tp->Rpl[i].DMABuff = 0; |
| 423 | |
| 424 | /* skb == NULL ? then use local buffer */ |
| 425 | if(tp->Rpl[i].Skb == NULL) |
| 426 | { |
| 427 | tp->Rpl[i].SkbStat = SKB_UNAVAILABLE; |
| 428 | tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer); |
| 429 | tp->Rpl[i].MData = tp->LocalRxBuffers[i]; |
| 430 | } |
| 431 | else /* SKB != NULL */ |
| 432 | { |
| 433 | tp->Rpl[i].Skb->dev = dev; |
| 434 | skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize); |
| 435 | |
| 436 | /* data unreachable for DMA ? then use local buffer */ |
| 437 | dmabuf = pci_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE); |
| 438 | if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit)) |
| 439 | { |
| 440 | tp->Rpl[i].SkbStat = SKB_DATA_COPY; |
| 441 | tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer); |
| 442 | tp->Rpl[i].MData = tp->LocalRxBuffers[i]; |
| 443 | } |
| 444 | else /* DMA directly in skb->data */ |
| 445 | { |
| 446 | tp->Rpl[i].SkbStat = SKB_DMA_DIRECT; |
| 447 | tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf); |
| 448 | tp->Rpl[i].MData = tp->Rpl[i].Skb->data; |
| 449 | tp->Rpl[i].DMABuff = dmabuf; |
| 450 | } |
| 451 | } |
| 452 | |
| 453 | tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM]; |
| 454 | tp->Rpl[i].RPLIndex = i; |
| 455 | } |
| 456 | |
| 457 | tp->RplHead = &tp->Rpl[0]; |
| 458 | tp->RplTail = &tp->Rpl[RPL_NUM-1]; |
| 459 | tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ); |
| 460 | |
| 461 | return; |
| 462 | } |
| 463 | |
| 464 | /* |
| 465 | * Initializes the initialisation parameter block. |
| 466 | */ |
| 467 | static void tms380tr_init_ipb(struct net_local *tp) |
| 468 | { |
| 469 | tp->ipb.Init_Options = BURST_MODE; |
| 470 | tp->ipb.CMD_Status_IV = 0; |
| 471 | tp->ipb.TX_IV = 0; |
| 472 | tp->ipb.RX_IV = 0; |
| 473 | tp->ipb.Ring_Status_IV = 0; |
| 474 | tp->ipb.SCB_Clear_IV = 0; |
| 475 | tp->ipb.Adapter_CHK_IV = 0; |
| 476 | tp->ipb.RX_Burst_Size = BURST_SIZE; |
| 477 | tp->ipb.TX_Burst_Size = BURST_SIZE; |
| 478 | tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES; |
| 479 | tp->ipb.SCB_Addr = 0; |
| 480 | tp->ipb.SSB_Addr = 0; |
| 481 | |
| 482 | return; |
| 483 | } |
| 484 | |
| 485 | /* |
| 486 | * Initializes the open parameter block. |
| 487 | */ |
| 488 | static void tms380tr_init_opb(struct net_device *dev) |
| 489 | { |
| 490 | struct net_local *tp; |
| 491 | unsigned long Addr; |
| 492 | unsigned short RplSize = RPL_SIZE; |
| 493 | unsigned short TplSize = TPL_SIZE; |
| 494 | unsigned short BufferSize = BUFFER_SIZE; |
| 495 | int i; |
| 496 | |
| 497 | tp = netdev_priv(dev); |
| 498 | |
| 499 | tp->ocpl.OPENOptions = 0; |
| 500 | tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION; |
| 501 | tp->ocpl.FullDuplex = 0; |
| 502 | tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF; |
| 503 | |
| 504 | /* |
| 505 | * Set node address |
| 506 | * |
| 507 | * We go ahead and put it in the OPB even though on |
| 508 | * most of the generic adapters this isn't required. |
| 509 | * Its simpler this way. -- ASF |
| 510 | */ |
| 511 | for (i=0;i<6;i++) |
| 512 | tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i]; |
| 513 | |
| 514 | tp->ocpl.GroupAddr = 0; |
| 515 | tp->ocpl.FunctAddr = 0; |
| 516 | tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize); |
| 517 | tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize); |
| 518 | tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize); |
| 519 | tp->ocpl.Reserved = 0; |
| 520 | tp->ocpl.TXBufMin = TX_BUF_MIN; |
| 521 | tp->ocpl.TXBufMax = TX_BUF_MAX; |
| 522 | |
| 523 | Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer); |
| 524 | |
| 525 | tp->ocpl.ProdIDAddr[0] = LOWORD(Addr); |
| 526 | tp->ocpl.ProdIDAddr[1] = HIWORD(Addr); |
| 527 | |
| 528 | return; |
| 529 | } |
| 530 | |
| 531 | /* |
| 532 | * Send OPEN command to adapter |
| 533 | */ |
| 534 | static void tms380tr_open_adapter(struct net_device *dev) |
| 535 | { |
| 536 | struct net_local *tp = netdev_priv(dev); |
| 537 | |
| 538 | if(tp->OpenCommandIssued) |
| 539 | return; |
| 540 | |
| 541 | tp->OpenCommandIssued = 1; |
| 542 | tms380tr_exec_cmd(dev, OC_OPEN); |
| 543 | |
| 544 | return; |
| 545 | } |
| 546 | |
| 547 | /* |
| 548 | * Clear the adapter's interrupt flag. Clear system interrupt enable |
| 549 | * (SINTEN): disable adapter to system interrupts. |
| 550 | */ |
| 551 | static void tms380tr_disable_interrupts(struct net_device *dev) |
| 552 | { |
| 553 | SIFWRITEB(0, SIFACL); |
| 554 | |
| 555 | return; |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * Set the adapter's interrupt flag. Set system interrupt enable |
| 560 | * (SINTEN): enable adapter to system interrupts. |
| 561 | */ |
| 562 | static void tms380tr_enable_interrupts(struct net_device *dev) |
| 563 | { |
| 564 | SIFWRITEB(ACL_SINTEN, SIFACL); |
| 565 | |
| 566 | return; |
| 567 | } |
| 568 | |
| 569 | /* |
| 570 | * Put command in command queue, try to execute it. |
| 571 | */ |
| 572 | static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command) |
| 573 | { |
| 574 | struct net_local *tp = netdev_priv(dev); |
| 575 | |
| 576 | tp->CMDqueue |= Command; |
| 577 | tms380tr_chk_outstanding_cmds(dev); |
| 578 | |
| 579 | return; |
| 580 | } |
| 581 | |
| 582 | static void tms380tr_timeout(struct net_device *dev) |
| 583 | { |
| 584 | /* |
| 585 | * If we get here, some higher level has decided we are broken. |
| 586 | * There should really be a "kick me" function call instead. |
| 587 | * |
| 588 | * Resetting the token ring adapter takes a long time so just |
| 589 | * fake transmission time and go on trying. Our own timeout |
| 590 | * routine is in tms380tr_timer_chk() |
| 591 | */ |
| 592 | dev->trans_start = jiffies; |
| 593 | netif_wake_queue(dev); |
| 594 | } |
| 595 | |
| 596 | /* |
| 597 | * Gets skb from system, queues it and checks if it can be sent |
| 598 | */ |
| 599 | static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev) |
| 600 | { |
| 601 | struct net_local *tp = netdev_priv(dev); |
| 602 | int err; |
| 603 | |
| 604 | err = tms380tr_hardware_send_packet(skb, dev); |
| 605 | if(tp->TplFree->NextTPLPtr->BusyFlag) |
| 606 | netif_stop_queue(dev); |
| 607 | return (err); |
| 608 | } |
| 609 | |
| 610 | /* |
| 611 | * Move frames into adapter tx queue |
| 612 | */ |
| 613 | static int tms380tr_hardware_send_packet(struct sk_buff *skb, struct net_device *dev) |
| 614 | { |
| 615 | TPL *tpl; |
| 616 | short length; |
| 617 | unsigned char *buf; |
| 618 | unsigned long flags; |
| 619 | int i; |
| 620 | dma_addr_t dmabuf, newbuf; |
| 621 | struct net_local *tp = netdev_priv(dev); |
| 622 | |
| 623 | /* Try to get a free TPL from the chain. |
| 624 | * |
| 625 | * NOTE: We *must* always leave one unused TPL in the chain, |
| 626 | * because otherwise the adapter might send frames twice. |
| 627 | */ |
| 628 | spin_lock_irqsave(&tp->lock, flags); |
| 629 | if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */ |
| 630 | if (tms380tr_debug > 0) |
| 631 | printk(KERN_DEBUG "%s: No free TPL\n", dev->name); |
| 632 | spin_unlock_irqrestore(&tp->lock, flags); |
| 633 | return 1; |
| 634 | } |
| 635 | |
| 636 | dmabuf = 0; |
| 637 | |
| 638 | /* Is buffer reachable for Busmaster-DMA? */ |
| 639 | |
| 640 | length = skb->len; |
| 641 | dmabuf = pci_map_single(tp->pdev, skb->data, length, PCI_DMA_TODEVICE); |
| 642 | if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) { |
| 643 | /* Copy frame to local buffer */ |
| 644 | pci_unmap_single(tp->pdev, dmabuf, length, PCI_DMA_TODEVICE); |
| 645 | dmabuf = 0; |
| 646 | i = tp->TplFree->TPLIndex; |
| 647 | buf = tp->LocalTxBuffers[i]; |
| 648 | memcpy(buf, skb->data, length); |
| 649 | newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer; |
| 650 | } |
| 651 | else { |
| 652 | /* Send direct from skb->data */ |
| 653 | newbuf = dmabuf; |
| 654 | buf = skb->data; |
| 655 | } |
| 656 | /* Source address in packet? */ |
| 657 | tms380tr_chk_src_addr(buf, dev->dev_addr); |
| 658 | tp->LastSendTime = jiffies; |
| 659 | tpl = tp->TplFree; /* Get the "free" TPL */ |
| 660 | tpl->BusyFlag = 1; /* Mark TPL as busy */ |
| 661 | tp->TplFree = tpl->NextTPLPtr; |
| 662 | |
| 663 | /* Save the skb for delayed return of skb to system */ |
| 664 | tpl->Skb = skb; |
| 665 | tpl->DMABuff = dmabuf; |
| 666 | tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length); |
| 667 | tpl->FragList[0].DataAddr = htonl(newbuf); |
| 668 | |
| 669 | /* Write the data length in the transmit list. */ |
| 670 | tpl->FrameSize = cpu_to_be16((unsigned short)length); |
| 671 | tpl->MData = buf; |
| 672 | |
| 673 | /* Transmit the frame and set the status values. */ |
| 674 | tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME |
| 675 | | TX_END_FRAME | TX_PASS_SRC_ADDR |
| 676 | | TX_FRAME_IRQ); |
| 677 | |
| 678 | /* Let adapter send the frame. */ |
| 679 | tms380tr_exec_sifcmd(dev, CMD_TX_VALID); |
| 680 | spin_unlock_irqrestore(&tp->lock, flags); |
| 681 | |
| 682 | return 0; |
| 683 | } |
| 684 | |
| 685 | /* |
| 686 | * Write the given value to the 'Status' field of the specified TPL. |
| 687 | * NOTE: This function should be used whenever the status of any TPL must be |
| 688 | * modified by the driver, because the compiler may otherwise change the |
| 689 | * order of instructions such that writing the TPL status may be executed at |
| 690 | * an undesireable time. When this function is used, the status is always |
| 691 | * written when the function is called. |
| 692 | */ |
| 693 | static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status) |
| 694 | { |
| 695 | tpl->Status = Status; |
| 696 | } |
| 697 | |
| 698 | static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr) |
| 699 | { |
| 700 | unsigned char SRBit; |
| 701 | |
| 702 | if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */ |
| 703 | return; |
| 704 | if((unsigned short)frame[12] != 0) /* Compare 2 bytes */ |
| 705 | return; |
| 706 | |
| 707 | SRBit = frame[8] & 0x80; |
| 708 | memcpy(&frame[8], hw_addr, 6); |
| 709 | frame[8] |= SRBit; |
| 710 | |
| 711 | return; |
| 712 | } |
| 713 | |
| 714 | /* |
| 715 | * The timer routine: Check if adapter still open and working, reopen if not. |
| 716 | */ |
| 717 | static void tms380tr_timer_chk(unsigned long data) |
| 718 | { |
| 719 | struct net_device *dev = (struct net_device*)data; |
| 720 | struct net_local *tp = netdev_priv(dev); |
| 721 | |
| 722 | if(tp->HaltInProgress) |
| 723 | return; |
| 724 | |
| 725 | tms380tr_chk_outstanding_cmds(dev); |
| 726 | if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies) |
| 727 | && (tp->TplFree != tp->TplBusy)) |
| 728 | { |
| 729 | /* Anything to send, but stalled too long */ |
| 730 | tp->LastSendTime = jiffies; |
| 731 | tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */ |
| 732 | } |
| 733 | |
| 734 | tp->timer.expires = jiffies + 2*HZ; |
| 735 | add_timer(&tp->timer); |
| 736 | |
| 737 | if(tp->AdapterOpenFlag || tp->ReOpenInProgress) |
| 738 | return; |
| 739 | tp->ReOpenInProgress = 1; |
| 740 | tms380tr_open_adapter(dev); |
| 741 | |
| 742 | return; |
| 743 | } |
| 744 | |
| 745 | /* |
| 746 | * The typical workload of the driver: Handle the network interface interrupts. |
| 747 | */ |
| 748 | irqreturn_t tms380tr_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 749 | { |
| 750 | struct net_device *dev = dev_id; |
| 751 | struct net_local *tp; |
| 752 | unsigned short irq_type; |
| 753 | int handled = 0; |
| 754 | |
| 755 | if(dev == NULL) { |
| 756 | printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq); |
| 757 | return IRQ_NONE; |
| 758 | } |
| 759 | |
| 760 | tp = netdev_priv(dev); |
| 761 | |
| 762 | irq_type = SIFREADW(SIFSTS); |
| 763 | |
| 764 | while(irq_type & STS_SYSTEM_IRQ) { |
| 765 | handled = 1; |
| 766 | irq_type &= STS_IRQ_MASK; |
| 767 | |
| 768 | if(!tms380tr_chk_ssb(tp, irq_type)) { |
| 769 | printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name); |
| 770 | break; |
| 771 | } |
| 772 | |
| 773 | switch(irq_type) { |
| 774 | case STS_IRQ_RECEIVE_STATUS: |
| 775 | tms380tr_reset_interrupt(dev); |
| 776 | tms380tr_rcv_status_irq(dev); |
| 777 | break; |
| 778 | |
| 779 | case STS_IRQ_TRANSMIT_STATUS: |
| 780 | /* Check if TRANSMIT.HALT command is complete */ |
| 781 | if(tp->ssb.Parm[0] & COMMAND_COMPLETE) { |
| 782 | tp->TransmitCommandActive = 0; |
| 783 | tp->TransmitHaltScheduled = 0; |
| 784 | |
| 785 | /* Issue a new transmit command. */ |
| 786 | tms380tr_exec_cmd(dev, OC_TRANSMIT); |
| 787 | } |
| 788 | |
| 789 | tms380tr_reset_interrupt(dev); |
| 790 | tms380tr_tx_status_irq(dev); |
| 791 | break; |
| 792 | |
| 793 | case STS_IRQ_COMMAND_STATUS: |
| 794 | /* The SSB contains status of last command |
| 795 | * other than receive/transmit. |
| 796 | */ |
| 797 | tms380tr_cmd_status_irq(dev); |
| 798 | break; |
| 799 | |
| 800 | case STS_IRQ_SCB_CLEAR: |
| 801 | /* The SCB is free for another command. */ |
| 802 | tp->ScbInUse = 0; |
| 803 | tms380tr_chk_outstanding_cmds(dev); |
| 804 | break; |
| 805 | |
| 806 | case STS_IRQ_RING_STATUS: |
| 807 | tms380tr_ring_status_irq(dev); |
| 808 | break; |
| 809 | |
| 810 | case STS_IRQ_ADAPTER_CHECK: |
| 811 | tms380tr_chk_irq(dev); |
| 812 | break; |
| 813 | |
| 814 | case STS_IRQ_LLC_STATUS: |
| 815 | printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n"); |
| 816 | break; |
| 817 | |
| 818 | case STS_IRQ_TIMER: |
| 819 | printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n"); |
| 820 | break; |
| 821 | |
| 822 | case STS_IRQ_RECEIVE_PENDING: |
| 823 | printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n"); |
| 824 | break; |
| 825 | |
| 826 | default: |
| 827 | printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type); |
| 828 | break; |
| 829 | } |
| 830 | |
| 831 | /* Reset system interrupt if not already done. */ |
| 832 | if(irq_type != STS_IRQ_TRANSMIT_STATUS |
| 833 | && irq_type != STS_IRQ_RECEIVE_STATUS) { |
| 834 | tms380tr_reset_interrupt(dev); |
| 835 | } |
| 836 | |
| 837 | irq_type = SIFREADW(SIFSTS); |
| 838 | } |
| 839 | |
| 840 | return IRQ_RETVAL(handled); |
| 841 | } |
| 842 | |
| 843 | /* |
| 844 | * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command. |
| 845 | */ |
| 846 | static void tms380tr_reset_interrupt(struct net_device *dev) |
| 847 | { |
| 848 | struct net_local *tp = netdev_priv(dev); |
| 849 | SSB *ssb = &tp->ssb; |
| 850 | |
| 851 | /* |
| 852 | * [Workaround for "Data Late"] |
| 853 | * Set all fields of the SSB to well-defined values so we can |
| 854 | * check if the adapter has written the SSB. |
| 855 | */ |
| 856 | |
| 857 | ssb->STS = (unsigned short) -1; |
| 858 | ssb->Parm[0] = (unsigned short) -1; |
| 859 | ssb->Parm[1] = (unsigned short) -1; |
| 860 | ssb->Parm[2] = (unsigned short) -1; |
| 861 | |
| 862 | /* Free SSB by issuing SSB_CLEAR command after reading IRQ code |
| 863 | * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts. |
| 864 | */ |
| 865 | tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ); |
| 866 | |
| 867 | return; |
| 868 | } |
| 869 | |
| 870 | /* |
| 871 | * Check if the SSB has actually been written by the adapter. |
| 872 | */ |
| 873 | static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType) |
| 874 | { |
| 875 | SSB *ssb = &tp->ssb; /* The address of the SSB. */ |
| 876 | |
| 877 | /* C 0 1 2 INTERRUPT CODE |
| 878 | * - - - - -------------- |
| 879 | * 1 1 1 1 TRANSMIT STATUS |
| 880 | * 1 1 1 1 RECEIVE STATUS |
| 881 | * 1 ? ? 0 COMMAND STATUS |
| 882 | * 0 0 0 0 SCB CLEAR |
| 883 | * 1 1 0 0 RING STATUS |
| 884 | * 0 0 0 0 ADAPTER CHECK |
| 885 | * |
| 886 | * 0 = SSB field not affected by interrupt |
| 887 | * 1 = SSB field is affected by interrupt |
| 888 | * |
| 889 | * C = SSB ADDRESS +0: COMMAND |
| 890 | * 0 = SSB ADDRESS +2: STATUS 0 |
| 891 | * 1 = SSB ADDRESS +4: STATUS 1 |
| 892 | * 2 = SSB ADDRESS +6: STATUS 2 |
| 893 | */ |
| 894 | |
| 895 | /* Check if this interrupt does use the SSB. */ |
| 896 | |
| 897 | if(IrqType != STS_IRQ_TRANSMIT_STATUS |
| 898 | && IrqType != STS_IRQ_RECEIVE_STATUS |
| 899 | && IrqType != STS_IRQ_COMMAND_STATUS |
| 900 | && IrqType != STS_IRQ_RING_STATUS) |
| 901 | { |
| 902 | return (1); /* SSB not involved. */ |
| 903 | } |
| 904 | |
| 905 | /* Note: All fields of the SSB have been set to all ones (-1) after it |
| 906 | * has last been used by the software (see DriverIsr()). |
| 907 | * |
| 908 | * Check if the affected SSB fields are still unchanged. |
| 909 | */ |
| 910 | |
| 911 | if(ssb->STS == (unsigned short) -1) |
| 912 | return (0); /* Command field not yet available. */ |
| 913 | if(IrqType == STS_IRQ_COMMAND_STATUS) |
| 914 | return (1); /* Status fields not always affected. */ |
| 915 | if(ssb->Parm[0] == (unsigned short) -1) |
| 916 | return (0); /* Status 1 field not yet available. */ |
| 917 | if(IrqType == STS_IRQ_RING_STATUS) |
| 918 | return (1); /* Status 2 & 3 fields not affected. */ |
| 919 | |
| 920 | /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */ |
| 921 | if(ssb->Parm[1] == (unsigned short) -1) |
| 922 | return (0); /* Status 2 field not yet available. */ |
| 923 | if(ssb->Parm[2] == (unsigned short) -1) |
| 924 | return (0); /* Status 3 field not yet available. */ |
| 925 | |
| 926 | return (1); /* All SSB fields have been written by the adapter. */ |
| 927 | } |
| 928 | |
| 929 | /* |
| 930 | * Evaluates the command results status in the SSB status field. |
| 931 | */ |
| 932 | static void tms380tr_cmd_status_irq(struct net_device *dev) |
| 933 | { |
| 934 | struct net_local *tp = netdev_priv(dev); |
| 935 | unsigned short ssb_cmd, ssb_parm_0; |
| 936 | unsigned short ssb_parm_1; |
| 937 | char *open_err = "Open error -"; |
| 938 | char *code_err = "Open code -"; |
| 939 | |
| 940 | /* Copy the ssb values to local variables */ |
| 941 | ssb_cmd = tp->ssb.STS; |
| 942 | ssb_parm_0 = tp->ssb.Parm[0]; |
| 943 | ssb_parm_1 = tp->ssb.Parm[1]; |
| 944 | |
| 945 | if(ssb_cmd == OPEN) |
| 946 | { |
| 947 | tp->Sleeping = 0; |
| 948 | if(!tp->ReOpenInProgress) |
| 949 | wake_up_interruptible(&tp->wait_for_tok_int); |
| 950 | |
| 951 | tp->OpenCommandIssued = 0; |
| 952 | tp->ScbInUse = 0; |
| 953 | |
| 954 | if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION) |
| 955 | { |
| 956 | /* Success, the adapter is open. */ |
| 957 | tp->LobeWireFaultLogged = 0; |
| 958 | tp->AdapterOpenFlag = 1; |
| 959 | tp->AdapterVirtOpenFlag = 1; |
| 960 | tp->TransmitCommandActive = 0; |
| 961 | tms380tr_exec_cmd(dev, OC_TRANSMIT); |
| 962 | tms380tr_exec_cmd(dev, OC_RECEIVE); |
| 963 | |
| 964 | if(tp->ReOpenInProgress) |
| 965 | tp->ReOpenInProgress = 0; |
| 966 | |
| 967 | return; |
| 968 | } |
| 969 | else /* The adapter did not open. */ |
| 970 | { |
| 971 | if(ssb_parm_0 & NODE_ADDR_ERROR) |
| 972 | printk(KERN_INFO "%s: Node address error\n", |
| 973 | dev->name); |
| 974 | if(ssb_parm_0 & LIST_SIZE_ERROR) |
| 975 | printk(KERN_INFO "%s: List size error\n", |
| 976 | dev->name); |
| 977 | if(ssb_parm_0 & BUF_SIZE_ERROR) |
| 978 | printk(KERN_INFO "%s: Buffer size error\n", |
| 979 | dev->name); |
| 980 | if(ssb_parm_0 & TX_BUF_COUNT_ERROR) |
| 981 | printk(KERN_INFO "%s: Tx buffer count error\n", |
| 982 | dev->name); |
| 983 | if(ssb_parm_0 & INVALID_OPEN_OPTION) |
| 984 | printk(KERN_INFO "%s: Invalid open option\n", |
| 985 | dev->name); |
| 986 | if(ssb_parm_0 & OPEN_ERROR) |
| 987 | { |
| 988 | /* Show the open phase. */ |
| 989 | switch(ssb_parm_0 & OPEN_PHASES_MASK) |
| 990 | { |
| 991 | case LOBE_MEDIA_TEST: |
| 992 | if(!tp->LobeWireFaultLogged) |
| 993 | { |
| 994 | tp->LobeWireFaultLogged = 1; |
| 995 | printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err); |
| 996 | } |
| 997 | tp->ReOpenInProgress = 1; |
| 998 | tp->AdapterOpenFlag = 0; |
| 999 | tp->AdapterVirtOpenFlag = 1; |
| 1000 | tms380tr_open_adapter(dev); |
| 1001 | return; |
| 1002 | |
| 1003 | case PHYSICAL_INSERTION: |
| 1004 | printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err); |
| 1005 | break; |
| 1006 | |
| 1007 | case ADDRESS_VERIFICATION: |
| 1008 | printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err); |
| 1009 | break; |
| 1010 | |
| 1011 | case PARTICIPATION_IN_RING_POLL: |
| 1012 | printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err); |
| 1013 | break; |
| 1014 | |
| 1015 | case REQUEST_INITIALISATION: |
| 1016 | printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err); |
| 1017 | break; |
| 1018 | |
| 1019 | case FULLDUPLEX_CHECK: |
| 1020 | printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err); |
| 1021 | break; |
| 1022 | |
| 1023 | default: |
| 1024 | printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err); |
| 1025 | break; |
| 1026 | } |
| 1027 | |
| 1028 | /* Show the open errors. */ |
| 1029 | switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK) |
| 1030 | { |
| 1031 | case OPEN_FUNCTION_FAILURE: |
| 1032 | printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err); |
| 1033 | tp->LastOpenStatus = |
| 1034 | OPEN_FUNCTION_FAILURE; |
| 1035 | break; |
| 1036 | |
| 1037 | case OPEN_SIGNAL_LOSS: |
| 1038 | printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err); |
| 1039 | tp->LastOpenStatus = |
| 1040 | OPEN_SIGNAL_LOSS; |
| 1041 | break; |
| 1042 | |
| 1043 | case OPEN_TIMEOUT: |
| 1044 | printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err); |
| 1045 | tp->LastOpenStatus = |
| 1046 | OPEN_TIMEOUT; |
| 1047 | break; |
| 1048 | |
| 1049 | case OPEN_RING_FAILURE: |
| 1050 | printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err); |
| 1051 | tp->LastOpenStatus = |
| 1052 | OPEN_RING_FAILURE; |
| 1053 | break; |
| 1054 | |
| 1055 | case OPEN_RING_BEACONING: |
| 1056 | printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err); |
| 1057 | tp->LastOpenStatus = |
| 1058 | OPEN_RING_BEACONING; |
| 1059 | break; |
| 1060 | |
| 1061 | case OPEN_DUPLICATE_NODEADDR: |
| 1062 | printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err); |
| 1063 | tp->LastOpenStatus = |
| 1064 | OPEN_DUPLICATE_NODEADDR; |
| 1065 | break; |
| 1066 | |
| 1067 | case OPEN_REQUEST_INIT: |
| 1068 | printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err); |
| 1069 | tp->LastOpenStatus = |
| 1070 | OPEN_REQUEST_INIT; |
| 1071 | break; |
| 1072 | |
| 1073 | case OPEN_REMOVE_RECEIVED: |
| 1074 | printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err); |
| 1075 | tp->LastOpenStatus = |
| 1076 | OPEN_REMOVE_RECEIVED; |
| 1077 | break; |
| 1078 | |
| 1079 | case OPEN_FULLDUPLEX_SET: |
| 1080 | printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err); |
| 1081 | tp->LastOpenStatus = |
| 1082 | OPEN_FULLDUPLEX_SET; |
| 1083 | break; |
| 1084 | |
| 1085 | default: |
| 1086 | printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err); |
| 1087 | tp->LastOpenStatus = |
| 1088 | OPEN_FUNCTION_FAILURE; |
| 1089 | break; |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | tp->AdapterOpenFlag = 0; |
| 1094 | tp->AdapterVirtOpenFlag = 0; |
| 1095 | |
| 1096 | return; |
| 1097 | } |
| 1098 | } |
| 1099 | else |
| 1100 | { |
| 1101 | if(ssb_cmd != READ_ERROR_LOG) |
| 1102 | return; |
| 1103 | |
| 1104 | /* Add values from the error log table to the MAC |
| 1105 | * statistics counters and update the errorlogtable |
| 1106 | * memory. |
| 1107 | */ |
| 1108 | tp->MacStat.line_errors += tp->errorlogtable.Line_Error; |
| 1109 | tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error; |
| 1110 | tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error; |
| 1111 | tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error; |
| 1112 | tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error; |
| 1113 | tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error; |
| 1114 | tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error; |
| 1115 | tp->MacStat.token_errors += tp->errorlogtable.Token_Error; |
| 1116 | tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error; |
| 1117 | tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error; |
| 1118 | tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters; |
| 1119 | tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error; |
| 1120 | tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error; |
| 1121 | } |
| 1122 | |
| 1123 | return; |
| 1124 | } |
| 1125 | |
| 1126 | /* |
| 1127 | * The inverse routine to tms380tr_open(). |
| 1128 | */ |
| 1129 | int tms380tr_close(struct net_device *dev) |
| 1130 | { |
| 1131 | struct net_local *tp = netdev_priv(dev); |
| 1132 | netif_stop_queue(dev); |
| 1133 | |
| 1134 | del_timer(&tp->timer); |
| 1135 | |
| 1136 | /* Flush the Tx and disable Rx here. */ |
| 1137 | |
| 1138 | tp->HaltInProgress = 1; |
| 1139 | tms380tr_exec_cmd(dev, OC_CLOSE); |
| 1140 | tp->timer.expires = jiffies + 1*HZ; |
| 1141 | tp->timer.function = tms380tr_timer_end_wait; |
| 1142 | tp->timer.data = (unsigned long)dev; |
| 1143 | add_timer(&tp->timer); |
| 1144 | |
| 1145 | tms380tr_enable_interrupts(dev); |
| 1146 | |
| 1147 | tp->Sleeping = 1; |
| 1148 | interruptible_sleep_on(&tp->wait_for_tok_int); |
| 1149 | tp->TransmitCommandActive = 0; |
| 1150 | |
| 1151 | del_timer(&tp->timer); |
| 1152 | tms380tr_disable_interrupts(dev); |
| 1153 | |
| 1154 | #ifdef CONFIG_ISA |
| 1155 | if(dev->dma > 0) |
| 1156 | { |
| 1157 | unsigned long flags=claim_dma_lock(); |
| 1158 | disable_dma(dev->dma); |
| 1159 | release_dma_lock(flags); |
| 1160 | } |
| 1161 | #endif |
| 1162 | |
| 1163 | SIFWRITEW(0xFF00, SIFCMD); |
| 1164 | #if 0 |
| 1165 | if(dev->dma > 0) /* what the? */ |
| 1166 | SIFWRITEB(0xff, POSREG); |
| 1167 | #endif |
| 1168 | tms380tr_cancel_tx_queue(tp); |
| 1169 | |
| 1170 | return (0); |
| 1171 | } |
| 1172 | |
| 1173 | /* |
| 1174 | * Get the current statistics. This may be called with the card open |
| 1175 | * or closed. |
| 1176 | */ |
| 1177 | static struct net_device_stats *tms380tr_get_stats(struct net_device *dev) |
| 1178 | { |
| 1179 | struct net_local *tp = netdev_priv(dev); |
| 1180 | |
| 1181 | return ((struct net_device_stats *)&tp->MacStat); |
| 1182 | } |
| 1183 | |
| 1184 | /* |
| 1185 | * Set or clear the multicast filter for this adapter. |
| 1186 | */ |
| 1187 | static void tms380tr_set_multicast_list(struct net_device *dev) |
| 1188 | { |
| 1189 | struct net_local *tp = netdev_priv(dev); |
| 1190 | unsigned int OpenOptions; |
| 1191 | |
| 1192 | OpenOptions = tp->ocpl.OPENOptions & |
| 1193 | ~(PASS_ADAPTER_MAC_FRAMES |
| 1194 | | PASS_ATTENTION_FRAMES |
| 1195 | | PASS_BEACON_MAC_FRAMES |
| 1196 | | COPY_ALL_MAC_FRAMES |
| 1197 | | COPY_ALL_NON_MAC_FRAMES); |
| 1198 | |
| 1199 | tp->ocpl.FunctAddr = 0; |
| 1200 | |
| 1201 | if(dev->flags & IFF_PROMISC) |
| 1202 | /* Enable promiscuous mode */ |
| 1203 | OpenOptions |= COPY_ALL_NON_MAC_FRAMES | |
| 1204 | COPY_ALL_MAC_FRAMES; |
| 1205 | else |
| 1206 | { |
| 1207 | if(dev->flags & IFF_ALLMULTI) |
| 1208 | { |
| 1209 | /* Disable promiscuous mode, use normal mode. */ |
| 1210 | tp->ocpl.FunctAddr = 0xFFFFFFFF; |
| 1211 | } |
| 1212 | else |
| 1213 | { |
| 1214 | int i; |
| 1215 | struct dev_mc_list *mclist = dev->mc_list; |
| 1216 | for (i=0; i< dev->mc_count; i++) |
| 1217 | { |
| 1218 | ((char *)(&tp->ocpl.FunctAddr))[0] |= |
| 1219 | mclist->dmi_addr[2]; |
| 1220 | ((char *)(&tp->ocpl.FunctAddr))[1] |= |
| 1221 | mclist->dmi_addr[3]; |
| 1222 | ((char *)(&tp->ocpl.FunctAddr))[2] |= |
| 1223 | mclist->dmi_addr[4]; |
| 1224 | ((char *)(&tp->ocpl.FunctAddr))[3] |= |
| 1225 | mclist->dmi_addr[5]; |
| 1226 | mclist = mclist->next; |
| 1227 | } |
| 1228 | } |
| 1229 | tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR); |
| 1230 | } |
| 1231 | |
| 1232 | tp->ocpl.OPENOptions = OpenOptions; |
| 1233 | tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS); |
| 1234 | return; |
| 1235 | } |
| 1236 | |
| 1237 | /* |
| 1238 | * Wait for some time (microseconds) |
| 1239 | */ |
| 1240 | void tms380tr_wait(unsigned long time) |
| 1241 | { |
| 1242 | #if 0 |
| 1243 | long tmp; |
| 1244 | |
| 1245 | tmp = jiffies + time/(1000000/HZ); |
| 1246 | do { |
| 1247 | current->state = TASK_INTERRUPTIBLE; |
| 1248 | tmp = schedule_timeout(tmp); |
| 1249 | } while(time_after(tmp, jiffies)); |
| 1250 | #else |
| 1251 | udelay(time); |
| 1252 | #endif |
| 1253 | return; |
| 1254 | } |
| 1255 | |
| 1256 | /* |
| 1257 | * Write a command value to the SIFCMD register |
| 1258 | */ |
| 1259 | static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue) |
| 1260 | { |
| 1261 | unsigned short cmd; |
| 1262 | unsigned short SifStsValue; |
| 1263 | unsigned long loop_counter; |
| 1264 | |
| 1265 | WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER); |
| 1266 | cmd = (unsigned short)WriteValue; |
| 1267 | loop_counter = 0,5 * 800000; |
| 1268 | do { |
| 1269 | SifStsValue = SIFREADW(SIFSTS); |
| 1270 | } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--); |
| 1271 | SIFWRITEW(cmd, SIFCMD); |
| 1272 | |
| 1273 | return; |
| 1274 | } |
| 1275 | |
| 1276 | /* |
| 1277 | * Processes adapter hardware reset, halts adapter and downloads firmware, |
| 1278 | * clears the halt bit. |
| 1279 | */ |
| 1280 | static int tms380tr_reset_adapter(struct net_device *dev) |
| 1281 | { |
| 1282 | struct net_local *tp = netdev_priv(dev); |
| 1283 | unsigned short *fw_ptr; |
| 1284 | unsigned short count, c, count2; |
| 1285 | const struct firmware *fw_entry = NULL; |
| 1286 | |
| 1287 | strncpy(tms_device.bus_id,dev->name, BUS_ID_SIZE); |
| 1288 | |
| 1289 | if (request_firmware(&fw_entry, "tms380tr.bin", &tms_device) != 0) { |
| 1290 | printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n", |
| 1291 | dev->name, "tms380tr.bin"); |
| 1292 | return (-1); |
| 1293 | } |
| 1294 | |
| 1295 | fw_ptr = (unsigned short *)fw_entry->data; |
| 1296 | count2 = fw_entry->size / 2; |
| 1297 | |
| 1298 | /* Hardware adapter reset */ |
| 1299 | SIFWRITEW(ACL_ARESET, SIFACL); |
| 1300 | tms380tr_wait(40); |
| 1301 | |
| 1302 | c = SIFREADW(SIFACL); |
| 1303 | tms380tr_wait(20); |
| 1304 | |
| 1305 | if(dev->dma == 0) /* For PCI adapters */ |
| 1306 | { |
| 1307 | c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */ |
| 1308 | if(tp->setnselout) |
| 1309 | c |= (*tp->setnselout)(dev); |
| 1310 | } |
| 1311 | |
| 1312 | /* In case a command is pending - forget it */ |
| 1313 | tp->ScbInUse = 0; |
| 1314 | |
| 1315 | c &= ~ACL_ARESET; /* Clear adapter reset bit */ |
| 1316 | c |= ACL_CPHALT; /* Halt adapter CPU, allow download */ |
| 1317 | c |= ACL_BOOT; |
| 1318 | c |= ACL_SINTEN; |
| 1319 | c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */ |
| 1320 | SIFWRITEW(c, SIFACL); |
| 1321 | tms380tr_wait(40); |
| 1322 | |
| 1323 | count = 0; |
| 1324 | /* Download firmware via DIO interface: */ |
| 1325 | do { |
| 1326 | if (count2 < 3) continue; |
| 1327 | |
| 1328 | /* Download first address part */ |
| 1329 | SIFWRITEW(*fw_ptr, SIFADX); |
| 1330 | fw_ptr++; |
| 1331 | count2--; |
| 1332 | /* Download second address part */ |
| 1333 | SIFWRITEW(*fw_ptr, SIFADD); |
| 1334 | fw_ptr++; |
| 1335 | count2--; |
| 1336 | |
| 1337 | if((count = *fw_ptr) != 0) /* Load loop counter */ |
| 1338 | { |
| 1339 | fw_ptr++; /* Download block data */ |
| 1340 | count2--; |
| 1341 | if (count > count2) continue; |
| 1342 | |
| 1343 | for(; count > 0; count--) |
| 1344 | { |
| 1345 | SIFWRITEW(*fw_ptr, SIFINC); |
| 1346 | fw_ptr++; |
| 1347 | count2--; |
| 1348 | } |
| 1349 | } |
| 1350 | else /* Stop, if last block downloaded */ |
| 1351 | { |
| 1352 | c = SIFREADW(SIFACL); |
| 1353 | c &= (~ACL_CPHALT | ACL_SINTEN); |
| 1354 | |
| 1355 | /* Clear CPHALT and start BUD */ |
| 1356 | SIFWRITEW(c, SIFACL); |
| 1357 | if (fw_entry) |
| 1358 | release_firmware(fw_entry); |
| 1359 | return (1); |
| 1360 | } |
| 1361 | } while(count == 0); |
| 1362 | |
| 1363 | if (fw_entry) |
| 1364 | release_firmware(fw_entry); |
| 1365 | printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name); |
| 1366 | return (-1); |
| 1367 | } |
| 1368 | |
| 1369 | /* |
| 1370 | * Starts bring up diagnostics of token ring adapter and evaluates |
| 1371 | * diagnostic results. |
| 1372 | */ |
| 1373 | static int tms380tr_bringup_diags(struct net_device *dev) |
| 1374 | { |
| 1375 | int loop_cnt, retry_cnt; |
| 1376 | unsigned short Status; |
| 1377 | |
| 1378 | tms380tr_wait(HALF_SECOND); |
| 1379 | tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET); |
| 1380 | tms380tr_wait(HALF_SECOND); |
| 1381 | |
| 1382 | retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */ |
| 1383 | |
| 1384 | do { |
| 1385 | retry_cnt--; |
| 1386 | if(tms380tr_debug > 3) |
| 1387 | printk(KERN_DEBUG "BUD-Status: "); |
| 1388 | loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/ |
| 1389 | do { /* Inspect BUD results */ |
| 1390 | loop_cnt--; |
| 1391 | tms380tr_wait(HALF_SECOND); |
| 1392 | Status = SIFREADW(SIFSTS); |
| 1393 | Status &= STS_MASK; |
| 1394 | |
| 1395 | if(tms380tr_debug > 3) |
| 1396 | printk(KERN_DEBUG " %04X \n", Status); |
| 1397 | /* BUD successfully completed */ |
| 1398 | if(Status == STS_INITIALIZE) |
| 1399 | return (1); |
| 1400 | /* Unrecoverable hardware error, BUD not completed? */ |
| 1401 | } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST)) |
| 1402 | != (STS_ERROR | STS_TEST))); |
| 1403 | |
| 1404 | /* Error preventing completion of BUD */ |
| 1405 | if(retry_cnt > 0) |
| 1406 | { |
| 1407 | printk(KERN_INFO "%s: Adapter Software Reset.\n", |
| 1408 | dev->name); |
| 1409 | tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET); |
| 1410 | tms380tr_wait(HALF_SECOND); |
| 1411 | } |
| 1412 | } while(retry_cnt > 0); |
| 1413 | |
| 1414 | Status = SIFREADW(SIFSTS); |
| 1415 | |
| 1416 | printk(KERN_INFO "%s: Hardware error\n", dev->name); |
| 1417 | /* Hardware error occurred! */ |
| 1418 | Status &= 0x001f; |
| 1419 | if (Status & 0x0010) |
| 1420 | printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name); |
| 1421 | else if ((Status & 0x000f) > 6) |
| 1422 | printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name); |
| 1423 | else |
| 1424 | printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f); |
| 1425 | |
| 1426 | return (-1); |
| 1427 | } |
| 1428 | |
| 1429 | /* |
| 1430 | * Copy initialisation data to adapter memory, beginning at address |
| 1431 | * 1:0A00; Starting DMA test and evaluating result bits. |
| 1432 | */ |
| 1433 | static int tms380tr_init_adapter(struct net_device *dev) |
| 1434 | { |
| 1435 | struct net_local *tp = netdev_priv(dev); |
| 1436 | |
| 1437 | const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B}; |
| 1438 | const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7, |
| 1439 | 0xC5, 0xD9, 0xC3, 0xD4}; |
| 1440 | void *ptr = (void *)&tp->ipb; |
| 1441 | unsigned short *ipb_ptr = (unsigned short *)ptr; |
| 1442 | unsigned char *cb_ptr = (unsigned char *) &tp->scb; |
| 1443 | unsigned char *sb_ptr = (unsigned char *) &tp->ssb; |
| 1444 | unsigned short Status; |
| 1445 | int i, loop_cnt, retry_cnt; |
| 1446 | |
| 1447 | /* Normalize: byte order low/high, word order high/low! (only IPB!) */ |
| 1448 | tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer); |
| 1449 | tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer); |
| 1450 | |
| 1451 | if(tms380tr_debug > 3) |
| 1452 | { |
| 1453 | printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb); |
| 1454 | printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer); |
| 1455 | printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer); |
| 1456 | printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp); |
| 1457 | } |
| 1458 | /* Maximum: three initialization retries */ |
| 1459 | retry_cnt = INIT_MAX_RETRIES; |
| 1460 | |
| 1461 | do { |
| 1462 | retry_cnt--; |
| 1463 | |
| 1464 | /* Transfer initialization block */ |
| 1465 | SIFWRITEW(0x0001, SIFADX); |
| 1466 | |
| 1467 | /* To address 0001:0A00 of adapter RAM */ |
| 1468 | SIFWRITEW(0x0A00, SIFADD); |
| 1469 | |
| 1470 | /* Write 11 words to adapter RAM */ |
| 1471 | for(i = 0; i < 11; i++) |
| 1472 | SIFWRITEW(ipb_ptr[i], SIFINC); |
| 1473 | |
| 1474 | /* Execute SCB adapter command */ |
| 1475 | tms380tr_exec_sifcmd(dev, CMD_EXECUTE); |
| 1476 | |
| 1477 | loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */ |
| 1478 | |
| 1479 | /* While remaining retries, no error and not completed */ |
| 1480 | do { |
| 1481 | Status = 0; |
| 1482 | loop_cnt--; |
| 1483 | tms380tr_wait(HALF_SECOND); |
| 1484 | |
| 1485 | /* Mask interesting status bits */ |
| 1486 | Status = SIFREADW(SIFSTS); |
| 1487 | Status &= STS_MASK; |
| 1488 | } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0) |
| 1489 | && ((Status & STS_ERROR) == 0) && (loop_cnt != 0)); |
| 1490 | |
| 1491 | if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0) |
| 1492 | { |
| 1493 | /* Initialization completed without error */ |
| 1494 | i = 0; |
| 1495 | do { /* Test if contents of SCB is valid */ |
| 1496 | if(SCB_Test[i] != *(cb_ptr + i)) |
| 1497 | { |
| 1498 | printk(KERN_INFO "%s: DMA failed\n", dev->name); |
| 1499 | /* DMA data error: wrong data in SCB */ |
| 1500 | return (-1); |
| 1501 | } |
| 1502 | i++; |
| 1503 | } while(i < 6); |
| 1504 | |
| 1505 | i = 0; |
| 1506 | do { /* Test if contents of SSB is valid */ |
| 1507 | if(SSB_Test[i] != *(sb_ptr + i)) |
| 1508 | /* DMA data error: wrong data in SSB */ |
| 1509 | return (-1); |
| 1510 | i++; |
| 1511 | } while (i < 8); |
| 1512 | |
| 1513 | return (1); /* Adapter successfully initialized */ |
| 1514 | } |
| 1515 | else |
| 1516 | { |
| 1517 | if((Status & STS_ERROR) != 0) |
| 1518 | { |
| 1519 | /* Initialization error occurred */ |
| 1520 | Status = SIFREADW(SIFSTS); |
| 1521 | Status &= STS_ERROR_MASK; |
| 1522 | /* ShowInitialisationErrorCode(Status); */ |
| 1523 | printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status); |
| 1524 | return (-1); /* Unrecoverable error */ |
| 1525 | } |
| 1526 | else |
| 1527 | { |
| 1528 | if(retry_cnt > 0) |
| 1529 | { |
| 1530 | /* Reset adapter and try init again */ |
| 1531 | tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET); |
| 1532 | tms380tr_wait(HALF_SECOND); |
| 1533 | } |
| 1534 | } |
| 1535 | } |
| 1536 | } while(retry_cnt > 0); |
| 1537 | |
| 1538 | printk(KERN_INFO "%s: Retry exceeded\n", dev->name); |
| 1539 | return (-1); |
| 1540 | } |
| 1541 | |
| 1542 | /* |
| 1543 | * Check for outstanding commands in command queue and tries to execute |
| 1544 | * command immediately. Corresponding command flag in command queue is cleared. |
| 1545 | */ |
| 1546 | static void tms380tr_chk_outstanding_cmds(struct net_device *dev) |
| 1547 | { |
| 1548 | struct net_local *tp = netdev_priv(dev); |
| 1549 | unsigned long Addr = 0; |
| 1550 | |
| 1551 | if(tp->CMDqueue == 0) |
| 1552 | return; /* No command execution */ |
| 1553 | |
| 1554 | /* If SCB in use: no command */ |
| 1555 | if(tp->ScbInUse == 1) |
| 1556 | return; |
| 1557 | |
| 1558 | /* Check if adapter is opened, avoiding COMMAND_REJECT |
| 1559 | * interrupt by the adapter! |
| 1560 | */ |
| 1561 | if(tp->AdapterOpenFlag == 0) |
| 1562 | { |
| 1563 | if(tp->CMDqueue & OC_OPEN) |
| 1564 | { |
| 1565 | /* Execute OPEN command */ |
| 1566 | tp->CMDqueue ^= OC_OPEN; |
| 1567 | |
| 1568 | Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer); |
| 1569 | tp->scb.Parm[0] = LOWORD(Addr); |
| 1570 | tp->scb.Parm[1] = HIWORD(Addr); |
| 1571 | tp->scb.CMD = OPEN; |
| 1572 | } |
| 1573 | else |
| 1574 | /* No OPEN command queued, but adapter closed. Note: |
| 1575 | * We'll try to re-open the adapter in DriverPoll() |
| 1576 | */ |
| 1577 | return; /* No adapter command issued */ |
| 1578 | } |
| 1579 | else |
| 1580 | { |
| 1581 | /* Adapter is open; evaluate command queue: try to execute |
| 1582 | * outstanding commands (depending on priority!) CLOSE |
| 1583 | * command queued |
| 1584 | */ |
| 1585 | if(tp->CMDqueue & OC_CLOSE) |
| 1586 | { |
| 1587 | tp->CMDqueue ^= OC_CLOSE; |
| 1588 | tp->AdapterOpenFlag = 0; |
| 1589 | tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */ |
| 1590 | tp->scb.Parm[1] = 0; /* but should be set to zero! */ |
| 1591 | tp->scb.CMD = CLOSE; |
| 1592 | if(!tp->HaltInProgress) |
| 1593 | tp->CMDqueue |= OC_OPEN; /* re-open adapter */ |
| 1594 | else |
| 1595 | tp->CMDqueue = 0; /* no more commands */ |
| 1596 | } |
| 1597 | else |
| 1598 | { |
| 1599 | if(tp->CMDqueue & OC_RECEIVE) |
| 1600 | { |
| 1601 | tp->CMDqueue ^= OC_RECEIVE; |
| 1602 | Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer); |
| 1603 | tp->scb.Parm[0] = LOWORD(Addr); |
| 1604 | tp->scb.Parm[1] = HIWORD(Addr); |
| 1605 | tp->scb.CMD = RECEIVE; |
| 1606 | } |
| 1607 | else |
| 1608 | { |
| 1609 | if(tp->CMDqueue & OC_TRANSMIT_HALT) |
| 1610 | { |
| 1611 | /* NOTE: TRANSMIT.HALT must be checked |
| 1612 | * before TRANSMIT. |
| 1613 | */ |
| 1614 | tp->CMDqueue ^= OC_TRANSMIT_HALT; |
| 1615 | tp->scb.CMD = TRANSMIT_HALT; |
| 1616 | |
| 1617 | /* Parm[0] and Parm[1] are ignored |
| 1618 | * but should be set to zero! |
| 1619 | */ |
| 1620 | tp->scb.Parm[0] = 0; |
| 1621 | tp->scb.Parm[1] = 0; |
| 1622 | } |
| 1623 | else |
| 1624 | { |
| 1625 | if(tp->CMDqueue & OC_TRANSMIT) |
| 1626 | { |
| 1627 | /* NOTE: TRANSMIT must be |
| 1628 | * checked after TRANSMIT.HALT |
| 1629 | */ |
| 1630 | if(tp->TransmitCommandActive) |
| 1631 | { |
| 1632 | if(!tp->TransmitHaltScheduled) |
| 1633 | { |
| 1634 | tp->TransmitHaltScheduled = 1; |
| 1635 | tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ; |
| 1636 | } |
| 1637 | tp->TransmitCommandActive = 0; |
| 1638 | return; |
| 1639 | } |
| 1640 | |
| 1641 | tp->CMDqueue ^= OC_TRANSMIT; |
| 1642 | tms380tr_cancel_tx_queue(tp); |
| 1643 | Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer); |
| 1644 | tp->scb.Parm[0] = LOWORD(Addr); |
| 1645 | tp->scb.Parm[1] = HIWORD(Addr); |
| 1646 | tp->scb.CMD = TRANSMIT; |
| 1647 | tp->TransmitCommandActive = 1; |
| 1648 | } |
| 1649 | else |
| 1650 | { |
| 1651 | if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS) |
| 1652 | { |
| 1653 | tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS; |
| 1654 | tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/ |
| 1655 | tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION; |
| 1656 | tp->scb.Parm[1] = 0; /* is ignored but should be zero */ |
| 1657 | tp->scb.CMD = MODIFY_OPEN_PARMS; |
| 1658 | } |
| 1659 | else |
| 1660 | { |
| 1661 | if(tp->CMDqueue & OC_SET_FUNCT_ADDR) |
| 1662 | { |
| 1663 | tp->CMDqueue ^= OC_SET_FUNCT_ADDR; |
| 1664 | tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr); |
| 1665 | tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr); |
| 1666 | tp->scb.CMD = SET_FUNCT_ADDR; |
| 1667 | } |
| 1668 | else |
| 1669 | { |
| 1670 | if(tp->CMDqueue & OC_SET_GROUP_ADDR) |
| 1671 | { |
| 1672 | tp->CMDqueue ^= OC_SET_GROUP_ADDR; |
| 1673 | tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr); |
| 1674 | tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr); |
| 1675 | tp->scb.CMD = SET_GROUP_ADDR; |
| 1676 | } |
| 1677 | else |
| 1678 | { |
| 1679 | if(tp->CMDqueue & OC_READ_ERROR_LOG) |
| 1680 | { |
| 1681 | tp->CMDqueue ^= OC_READ_ERROR_LOG; |
| 1682 | Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer); |
| 1683 | tp->scb.Parm[0] = LOWORD(Addr); |
| 1684 | tp->scb.Parm[1] = HIWORD(Addr); |
| 1685 | tp->scb.CMD = READ_ERROR_LOG; |
| 1686 | } |
| 1687 | else |
| 1688 | { |
| 1689 | printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n"); |
| 1690 | tp->CMDqueue = 0; |
| 1691 | return; |
| 1692 | } |
| 1693 | } |
| 1694 | } |
| 1695 | } |
| 1696 | } |
| 1697 | } |
| 1698 | } |
| 1699 | } |
| 1700 | } |
| 1701 | |
| 1702 | tp->ScbInUse = 1; /* Set semaphore: SCB in use. */ |
| 1703 | |
| 1704 | /* Execute SCB and generate IRQ when done. */ |
| 1705 | tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST); |
| 1706 | |
| 1707 | return; |
| 1708 | } |
| 1709 | |
| 1710 | /* |
| 1711 | * IRQ conditions: signal loss on the ring, transmit or receive of beacon |
| 1712 | * frames (disabled if bit 1 of OPEN option is set); report error MAC |
| 1713 | * frame transmit (disabled if bit 2 of OPEN option is set); open or short |
| 1714 | * circuit fault on the lobe is detected; remove MAC frame received; |
| 1715 | * error counter overflow (255); opened adapter is the only station in ring. |
| 1716 | * After some of the IRQs the adapter is closed! |
| 1717 | */ |
| 1718 | static void tms380tr_ring_status_irq(struct net_device *dev) |
| 1719 | { |
| 1720 | struct net_local *tp = netdev_priv(dev); |
| 1721 | |
| 1722 | tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]); |
| 1723 | |
| 1724 | /* First: fill up statistics */ |
| 1725 | if(tp->ssb.Parm[0] & SIGNAL_LOSS) |
| 1726 | { |
| 1727 | printk(KERN_INFO "%s: Signal Loss\n", dev->name); |
| 1728 | tp->MacStat.line_errors++; |
| 1729 | } |
| 1730 | |
| 1731 | /* Adapter is closed, but initialized */ |
| 1732 | if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT) |
| 1733 | { |
| 1734 | printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n", |
| 1735 | dev->name); |
| 1736 | tp->MacStat.line_errors++; |
| 1737 | } |
| 1738 | |
| 1739 | if(tp->ssb.Parm[0] & RING_RECOVERY) |
| 1740 | printk(KERN_INFO "%s: Ring Recovery\n", dev->name); |
| 1741 | |
| 1742 | /* Counter overflow: read error log */ |
| 1743 | if(tp->ssb.Parm[0] & COUNTER_OVERFLOW) |
| 1744 | { |
| 1745 | printk(KERN_INFO "%s: Counter Overflow\n", dev->name); |
| 1746 | tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG); |
| 1747 | } |
| 1748 | |
| 1749 | /* Adapter is closed, but initialized */ |
| 1750 | if(tp->ssb.Parm[0] & REMOVE_RECEIVED) |
| 1751 | printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n", |
| 1752 | dev->name); |
| 1753 | |
| 1754 | /* Adapter is closed, but initialized */ |
| 1755 | if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR) |
| 1756 | printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n", |
| 1757 | dev->name); |
| 1758 | |
| 1759 | if(tp->ssb.Parm[0] & HARD_ERROR) |
| 1760 | printk(KERN_INFO "%s: Hard Error\n", dev->name); |
| 1761 | |
| 1762 | if(tp->ssb.Parm[0] & SOFT_ERROR) |
| 1763 | printk(KERN_INFO "%s: Soft Error\n", dev->name); |
| 1764 | |
| 1765 | if(tp->ssb.Parm[0] & TRANSMIT_BEACON) |
| 1766 | printk(KERN_INFO "%s: Transmit Beacon\n", dev->name); |
| 1767 | |
| 1768 | if(tp->ssb.Parm[0] & SINGLE_STATION) |
| 1769 | printk(KERN_INFO "%s: Single Station\n", dev->name); |
| 1770 | |
| 1771 | /* Check if adapter has been closed */ |
| 1772 | if(tp->ssb.Parm[0] & ADAPTER_CLOSED) |
| 1773 | { |
| 1774 | printk(KERN_INFO "%s: Adapter closed (Reopening)," |
| 1775 | "CurrentRingStat %x\n", |
| 1776 | dev->name, tp->CurrentRingStatus); |
| 1777 | tp->AdapterOpenFlag = 0; |
| 1778 | tms380tr_open_adapter(dev); |
| 1779 | } |
| 1780 | |
| 1781 | return; |
| 1782 | } |
| 1783 | |
| 1784 | /* |
| 1785 | * Issued if adapter has encountered an unrecoverable hardware |
| 1786 | * or software error. |
| 1787 | */ |
| 1788 | static void tms380tr_chk_irq(struct net_device *dev) |
| 1789 | { |
| 1790 | int i; |
| 1791 | unsigned short AdapterCheckBlock[4]; |
| 1792 | struct net_local *tp = netdev_priv(dev); |
| 1793 | |
| 1794 | tp->AdapterOpenFlag = 0; /* Adapter closed now */ |
| 1795 | |
| 1796 | /* Page number of adapter memory */ |
| 1797 | SIFWRITEW(0x0001, SIFADX); |
| 1798 | /* Address offset */ |
| 1799 | SIFWRITEW(CHECKADDR, SIFADR); |
| 1800 | |
| 1801 | /* Reading 8 byte adapter check block. */ |
| 1802 | for(i = 0; i < 4; i++) |
| 1803 | AdapterCheckBlock[i] = SIFREADW(SIFINC); |
| 1804 | |
| 1805 | if(tms380tr_debug > 3) |
| 1806 | { |
| 1807 | printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name); |
| 1808 | for (i = 0; i < 4; i++) |
| 1809 | printk("%04X", AdapterCheckBlock[i]); |
| 1810 | printk("\n"); |
| 1811 | } |
| 1812 | |
| 1813 | switch(AdapterCheckBlock[0]) |
| 1814 | { |
| 1815 | case DIO_PARITY: |
| 1816 | printk(KERN_INFO "%s: DIO parity error\n", dev->name); |
| 1817 | break; |
| 1818 | |
| 1819 | case DMA_READ_ABORT: |
| 1820 | printk(KERN_INFO "%s DMA read operation aborted:\n", |
| 1821 | dev->name); |
| 1822 | switch (AdapterCheckBlock[1]) |
| 1823 | { |
| 1824 | case 0: |
| 1825 | printk(KERN_INFO "Timeout\n"); |
| 1826 | printk(KERN_INFO "Address: %04X %04X\n", |
| 1827 | AdapterCheckBlock[2], |
| 1828 | AdapterCheckBlock[3]); |
| 1829 | break; |
| 1830 | |
| 1831 | case 1: |
| 1832 | printk(KERN_INFO "Parity error\n"); |
| 1833 | printk(KERN_INFO "Address: %04X %04X\n", |
| 1834 | AdapterCheckBlock[2], |
| 1835 | AdapterCheckBlock[3]); |
| 1836 | break; |
| 1837 | |
| 1838 | case 2: |
| 1839 | printk(KERN_INFO "Bus error\n"); |
| 1840 | printk(KERN_INFO "Address: %04X %04X\n", |
| 1841 | AdapterCheckBlock[2], |
| 1842 | AdapterCheckBlock[3]); |
| 1843 | break; |
| 1844 | |
| 1845 | default: |
| 1846 | printk(KERN_INFO "Unknown error.\n"); |
| 1847 | break; |
| 1848 | } |
| 1849 | break; |
| 1850 | |
| 1851 | case DMA_WRITE_ABORT: |
| 1852 | printk(KERN_INFO "%s: DMA write operation aborted: \n", |
| 1853 | dev->name); |
| 1854 | switch (AdapterCheckBlock[1]) |
| 1855 | { |
| 1856 | case 0: |
| 1857 | printk(KERN_INFO "Timeout\n"); |
| 1858 | printk(KERN_INFO "Address: %04X %04X\n", |
| 1859 | AdapterCheckBlock[2], |
| 1860 | AdapterCheckBlock[3]); |
| 1861 | break; |
| 1862 | |
| 1863 | case 1: |
| 1864 | printk(KERN_INFO "Parity error\n"); |
| 1865 | printk(KERN_INFO "Address: %04X %04X\n", |
| 1866 | AdapterCheckBlock[2], |
| 1867 | AdapterCheckBlock[3]); |
| 1868 | break; |
| 1869 | |
| 1870 | case 2: |
| 1871 | printk(KERN_INFO "Bus error\n"); |
| 1872 | printk(KERN_INFO "Address: %04X %04X\n", |
| 1873 | AdapterCheckBlock[2], |
| 1874 | AdapterCheckBlock[3]); |
| 1875 | break; |
| 1876 | |
| 1877 | default: |
| 1878 | printk(KERN_INFO "Unknown error.\n"); |
| 1879 | break; |
| 1880 | } |
| 1881 | break; |
| 1882 | |
| 1883 | case ILLEGAL_OP_CODE: |
| 1884 | printk(KERN_INFO "%s: Illegal operation code in firmware\n", |
| 1885 | dev->name); |
| 1886 | /* Parm[0-3]: adapter internal register R13-R15 */ |
| 1887 | break; |
| 1888 | |
| 1889 | case PARITY_ERRORS: |
| 1890 | printk(KERN_INFO "%s: Adapter internal bus parity error\n", |
| 1891 | dev->name); |
| 1892 | /* Parm[0-3]: adapter internal register R13-R15 */ |
| 1893 | break; |
| 1894 | |
| 1895 | case RAM_DATA_ERROR: |
| 1896 | printk(KERN_INFO "%s: RAM data error\n", dev->name); |
| 1897 | /* Parm[0-1]: MSW/LSW address of RAM location. */ |
| 1898 | break; |
| 1899 | |
| 1900 | case RAM_PARITY_ERROR: |
| 1901 | printk(KERN_INFO "%s: RAM parity error\n", dev->name); |
| 1902 | /* Parm[0-1]: MSW/LSW address of RAM location. */ |
| 1903 | break; |
| 1904 | |
| 1905 | case RING_UNDERRUN: |
| 1906 | printk(KERN_INFO "%s: Internal DMA underrun detected\n", |
| 1907 | dev->name); |
| 1908 | break; |
| 1909 | |
| 1910 | case INVALID_IRQ: |
| 1911 | printk(KERN_INFO "%s: Unrecognized interrupt detected\n", |
| 1912 | dev->name); |
| 1913 | /* Parm[0-3]: adapter internal register R13-R15 */ |
| 1914 | break; |
| 1915 | |
| 1916 | case INVALID_ERROR_IRQ: |
| 1917 | printk(KERN_INFO "%s: Unrecognized error interrupt detected\n", |
| 1918 | dev->name); |
| 1919 | /* Parm[0-3]: adapter internal register R13-R15 */ |
| 1920 | break; |
| 1921 | |
| 1922 | case INVALID_XOP: |
| 1923 | printk(KERN_INFO "%s: Unrecognized XOP request detected\n", |
| 1924 | dev->name); |
| 1925 | /* Parm[0-3]: adapter internal register R13-R15 */ |
| 1926 | break; |
| 1927 | |
| 1928 | default: |
| 1929 | printk(KERN_INFO "%s: Unknown status", dev->name); |
| 1930 | break; |
| 1931 | } |
| 1932 | |
| 1933 | if(tms380tr_chipset_init(dev) == 1) |
| 1934 | { |
| 1935 | /* Restart of firmware successful */ |
| 1936 | tp->AdapterOpenFlag = 1; |
| 1937 | } |
| 1938 | |
| 1939 | return; |
| 1940 | } |
| 1941 | |
| 1942 | /* |
| 1943 | * Internal adapter pointer to RAM data are copied from adapter into |
| 1944 | * host system. |
| 1945 | */ |
| 1946 | static int tms380tr_read_ptr(struct net_device *dev) |
| 1947 | { |
| 1948 | struct net_local *tp = netdev_priv(dev); |
| 1949 | unsigned short adapterram; |
| 1950 | |
| 1951 | tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr, |
| 1952 | ADAPTER_INT_PTRS, 16); |
| 1953 | tms380tr_read_ram(dev, (unsigned char *)&adapterram, |
| 1954 | cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2); |
| 1955 | return be16_to_cpu(adapterram); |
| 1956 | } |
| 1957 | |
| 1958 | /* |
| 1959 | * Reads a number of bytes from adapter to system memory. |
| 1960 | */ |
| 1961 | static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data, |
| 1962 | unsigned short Address, int Length) |
| 1963 | { |
| 1964 | int i; |
| 1965 | unsigned short old_sifadx, old_sifadr, InWord; |
| 1966 | |
| 1967 | /* Save the current values */ |
| 1968 | old_sifadx = SIFREADW(SIFADX); |
| 1969 | old_sifadr = SIFREADW(SIFADR); |
| 1970 | |
| 1971 | /* Page number of adapter memory */ |
| 1972 | SIFWRITEW(0x0001, SIFADX); |
| 1973 | /* Address offset in adapter RAM */ |
| 1974 | SIFWRITEW(Address, SIFADR); |
| 1975 | |
| 1976 | /* Copy len byte from adapter memory to system data area. */ |
| 1977 | i = 0; |
| 1978 | for(;;) |
| 1979 | { |
| 1980 | InWord = SIFREADW(SIFINC); |
| 1981 | |
| 1982 | *(Data + i) = HIBYTE(InWord); /* Write first byte */ |
| 1983 | if(++i == Length) /* All is done break */ |
| 1984 | break; |
| 1985 | |
| 1986 | *(Data + i) = LOBYTE(InWord); /* Write second byte */ |
| 1987 | if (++i == Length) /* All is done break */ |
| 1988 | break; |
| 1989 | } |
| 1990 | |
| 1991 | /* Restore original values */ |
| 1992 | SIFWRITEW(old_sifadx, SIFADX); |
| 1993 | SIFWRITEW(old_sifadr, SIFADR); |
| 1994 | |
| 1995 | return; |
| 1996 | } |
| 1997 | |
| 1998 | /* |
| 1999 | * Cancel all queued packets in the transmission queue. |
| 2000 | */ |
| 2001 | static void tms380tr_cancel_tx_queue(struct net_local* tp) |
| 2002 | { |
| 2003 | TPL *tpl; |
| 2004 | |
| 2005 | /* |
| 2006 | * NOTE: There must not be an active TRANSMIT command pending, when |
| 2007 | * this function is called. |
| 2008 | */ |
| 2009 | if(tp->TransmitCommandActive) |
| 2010 | return; |
| 2011 | |
| 2012 | for(;;) |
| 2013 | { |
| 2014 | tpl = tp->TplBusy; |
| 2015 | if(!tpl->BusyFlag) |
| 2016 | break; |
| 2017 | /* "Remove" TPL from busy list. */ |
| 2018 | tp->TplBusy = tpl->NextTPLPtr; |
| 2019 | tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */ |
| 2020 | tpl->BusyFlag = 0; /* "free" TPL */ |
| 2021 | |
| 2022 | printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl); |
| 2023 | if (tpl->DMABuff) |
| 2024 | pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE); |
| 2025 | dev_kfree_skb_any(tpl->Skb); |
| 2026 | } |
| 2027 | |
| 2028 | return; |
| 2029 | } |
| 2030 | |
| 2031 | /* |
| 2032 | * This function is called whenever a transmit interrupt is generated by the |
| 2033 | * adapter. For a command complete interrupt, it is checked if we have to |
| 2034 | * issue a new transmit command or not. |
| 2035 | */ |
| 2036 | static void tms380tr_tx_status_irq(struct net_device *dev) |
| 2037 | { |
| 2038 | struct net_local *tp = netdev_priv(dev); |
| 2039 | unsigned char HighByte, HighAc, LowAc; |
| 2040 | TPL *tpl; |
| 2041 | |
| 2042 | /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer |
| 2043 | * available, because the CLEAR SSB command has already been issued. |
| 2044 | * |
| 2045 | * Process all complete transmissions. |
| 2046 | */ |
| 2047 | |
| 2048 | for(;;) |
| 2049 | { |
| 2050 | tpl = tp->TplBusy; |
| 2051 | if(!tpl->BusyFlag || (tpl->Status |
| 2052 | & (TX_VALID | TX_FRAME_COMPLETE)) |
| 2053 | != TX_FRAME_COMPLETE) |
| 2054 | { |
| 2055 | break; |
| 2056 | } |
| 2057 | |
| 2058 | /* "Remove" TPL from busy list. */ |
| 2059 | tp->TplBusy = tpl->NextTPLPtr ; |
| 2060 | |
| 2061 | /* Check the transmit status field only for directed frames*/ |
| 2062 | if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0) |
| 2063 | { |
| 2064 | HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status); |
| 2065 | HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte); |
| 2066 | LowAc = GET_FRAME_STATUS_LOW_AC(HighByte); |
| 2067 | |
| 2068 | if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED)) |
| 2069 | { |
| 2070 | printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n", |
| 2071 | dev->name, |
| 2072 | *(unsigned long *)&tpl->MData[2+2]); |
| 2073 | } |
| 2074 | else |
| 2075 | { |
| 2076 | if(tms380tr_debug > 3) |
| 2077 | printk(KERN_DEBUG "%s: Directed frame tx'd\n", |
| 2078 | dev->name); |
| 2079 | } |
| 2080 | } |
| 2081 | else |
| 2082 | { |
| 2083 | if(!DIRECTED_FRAME(tpl)) |
| 2084 | { |
| 2085 | if(tms380tr_debug > 3) |
| 2086 | printk(KERN_DEBUG "%s: Broadcast frame tx'd\n", |
| 2087 | dev->name); |
| 2088 | } |
| 2089 | } |
| 2090 | |
| 2091 | tp->MacStat.tx_packets++; |
| 2092 | if (tpl->DMABuff) |
| 2093 | pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE); |
| 2094 | dev_kfree_skb_irq(tpl->Skb); |
| 2095 | tpl->BusyFlag = 0; /* "free" TPL */ |
| 2096 | } |
| 2097 | |
| 2098 | if(!tp->TplFree->NextTPLPtr->BusyFlag) |
| 2099 | netif_wake_queue(dev); |
| 2100 | return; |
| 2101 | } |
| 2102 | |
| 2103 | /* |
| 2104 | * Called if a frame receive interrupt is generated by the adapter. |
| 2105 | * Check if the frame is valid and indicate it to system. |
| 2106 | */ |
| 2107 | static void tms380tr_rcv_status_irq(struct net_device *dev) |
| 2108 | { |
| 2109 | struct net_local *tp = netdev_priv(dev); |
| 2110 | unsigned char *ReceiveDataPtr; |
| 2111 | struct sk_buff *skb; |
| 2112 | unsigned int Length, Length2; |
| 2113 | RPL *rpl; |
| 2114 | RPL *SaveHead; |
| 2115 | dma_addr_t dmabuf; |
| 2116 | |
| 2117 | /* NOTE: At this point the SSB from RECEIVE STATUS is no longer |
| 2118 | * available, because the CLEAR SSB command has already been issued. |
| 2119 | * |
| 2120 | * Process all complete receives. |
| 2121 | */ |
| 2122 | |
| 2123 | for(;;) |
| 2124 | { |
| 2125 | rpl = tp->RplHead; |
| 2126 | if(rpl->Status & RX_VALID) |
| 2127 | break; /* RPL still in use by adapter */ |
| 2128 | |
| 2129 | /* Forward RPLHead pointer to next list. */ |
| 2130 | SaveHead = tp->RplHead; |
| 2131 | tp->RplHead = rpl->NextRPLPtr; |
| 2132 | |
| 2133 | /* Get the frame size (Byte swap for Intel). |
| 2134 | * Do this early (see workaround comment below) |
| 2135 | */ |
| 2136 | Length = be16_to_cpu((unsigned short)rpl->FrameSize); |
| 2137 | |
| 2138 | /* Check if the Frame_Start, Frame_End and |
| 2139 | * Frame_Complete bits are set. |
| 2140 | */ |
| 2141 | if((rpl->Status & VALID_SINGLE_BUFFER_FRAME) |
| 2142 | == VALID_SINGLE_BUFFER_FRAME) |
| 2143 | { |
| 2144 | ReceiveDataPtr = rpl->MData; |
| 2145 | |
| 2146 | /* Workaround for delayed write of FrameSize on ISA |
| 2147 | * (FrameSize is false but valid-bit is reset) |
| 2148 | * Frame size is set to zero when the RPL is freed. |
| 2149 | * Length2 is there because there have also been |
| 2150 | * cases where the FrameSize was partially written |
| 2151 | */ |
| 2152 | Length2 = be16_to_cpu((unsigned short)rpl->FrameSize); |
| 2153 | |
| 2154 | if(Length == 0 || Length != Length2) |
| 2155 | { |
| 2156 | tp->RplHead = SaveHead; |
| 2157 | break; /* Return to tms380tr_interrupt */ |
| 2158 | } |
| 2159 | tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length); |
| 2160 | |
| 2161 | if(tms380tr_debug > 3) |
| 2162 | printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n", |
| 2163 | dev->name, Length, Length); |
| 2164 | |
| 2165 | /* Indicate the received frame to system the |
| 2166 | * adapter does the Source-Routing padding for |
| 2167 | * us. See: OpenOptions in tms380tr_init_opb() |
| 2168 | */ |
| 2169 | skb = rpl->Skb; |
| 2170 | if(rpl->SkbStat == SKB_UNAVAILABLE) |
| 2171 | { |
| 2172 | /* Try again to allocate skb */ |
| 2173 | skb = dev_alloc_skb(tp->MaxPacketSize); |
| 2174 | if(skb == NULL) |
| 2175 | { |
| 2176 | /* Update Stats ?? */ |
| 2177 | } |
| 2178 | else |
| 2179 | { |
| 2180 | skb->dev = dev; |
| 2181 | skb_put(skb, tp->MaxPacketSize); |
| 2182 | rpl->SkbStat = SKB_DATA_COPY; |
| 2183 | ReceiveDataPtr = rpl->MData; |
| 2184 | } |
| 2185 | } |
| 2186 | |
| 2187 | if(skb && (rpl->SkbStat == SKB_DATA_COPY |
| 2188 | || rpl->SkbStat == SKB_DMA_DIRECT)) |
| 2189 | { |
| 2190 | if(rpl->SkbStat == SKB_DATA_COPY) |
| 2191 | memcpy(skb->data, ReceiveDataPtr, Length); |
| 2192 | |
| 2193 | /* Deliver frame to system */ |
| 2194 | rpl->Skb = NULL; |
| 2195 | skb_trim(skb,Length); |
| 2196 | skb->protocol = tr_type_trans(skb,dev); |
| 2197 | netif_rx(skb); |
| 2198 | dev->last_rx = jiffies; |
| 2199 | } |
| 2200 | } |
| 2201 | else /* Invalid frame */ |
| 2202 | { |
| 2203 | if(rpl->Skb != NULL) |
| 2204 | dev_kfree_skb_irq(rpl->Skb); |
| 2205 | |
| 2206 | /* Skip list. */ |
| 2207 | if(rpl->Status & RX_START_FRAME) |
| 2208 | /* Frame start bit is set -> overflow. */ |
| 2209 | tp->MacStat.rx_errors++; |
| 2210 | } |
| 2211 | if (rpl->DMABuff) |
| 2212 | pci_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, PCI_DMA_TODEVICE); |
| 2213 | rpl->DMABuff = 0; |
| 2214 | |
| 2215 | /* Allocate new skb for rpl */ |
| 2216 | rpl->Skb = dev_alloc_skb(tp->MaxPacketSize); |
| 2217 | /* skb == NULL ? then use local buffer */ |
| 2218 | if(rpl->Skb == NULL) |
| 2219 | { |
| 2220 | rpl->SkbStat = SKB_UNAVAILABLE; |
| 2221 | rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer); |
| 2222 | rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex]; |
| 2223 | } |
| 2224 | else /* skb != NULL */ |
| 2225 | { |
| 2226 | rpl->Skb->dev = dev; |
| 2227 | skb_put(rpl->Skb, tp->MaxPacketSize); |
| 2228 | |
| 2229 | /* Data unreachable for DMA ? then use local buffer */ |
| 2230 | dmabuf = pci_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE); |
| 2231 | if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit)) |
| 2232 | { |
| 2233 | rpl->SkbStat = SKB_DATA_COPY; |
| 2234 | rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer); |
| 2235 | rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex]; |
| 2236 | } |
| 2237 | else |
| 2238 | { |
| 2239 | /* DMA directly in skb->data */ |
| 2240 | rpl->SkbStat = SKB_DMA_DIRECT; |
| 2241 | rpl->FragList[0].DataAddr = htonl(dmabuf); |
| 2242 | rpl->MData = rpl->Skb->data; |
| 2243 | rpl->DMABuff = dmabuf; |
| 2244 | } |
| 2245 | } |
| 2246 | |
| 2247 | rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize); |
| 2248 | rpl->FrameSize = 0; |
| 2249 | |
| 2250 | /* Pass the last RPL back to the adapter */ |
| 2251 | tp->RplTail->FrameSize = 0; |
| 2252 | |
| 2253 | /* Reset the CSTAT field in the list. */ |
| 2254 | tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ); |
| 2255 | |
| 2256 | /* Current RPL becomes last one in list. */ |
| 2257 | tp->RplTail = tp->RplTail->NextRPLPtr; |
| 2258 | |
| 2259 | /* Inform adapter about RPL valid. */ |
| 2260 | tms380tr_exec_sifcmd(dev, CMD_RX_VALID); |
| 2261 | } |
| 2262 | |
| 2263 | return; |
| 2264 | } |
| 2265 | |
| 2266 | /* |
| 2267 | * This function should be used whenever the status of any RPL must be |
| 2268 | * modified by the driver, because the compiler may otherwise change the |
| 2269 | * order of instructions such that writing the RPL status may be executed |
| 2270 | * at an undesireable time. When this function is used, the status is |
| 2271 | * always written when the function is called. |
| 2272 | */ |
| 2273 | static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status) |
| 2274 | { |
| 2275 | rpl->Status = Status; |
| 2276 | |
| 2277 | return; |
| 2278 | } |
| 2279 | |
| 2280 | /* |
| 2281 | * The function updates the statistic counters in mac->MacStat. |
| 2282 | * It differtiates between directed and broadcast/multicast ( ==functional) |
| 2283 | * frames. |
| 2284 | */ |
| 2285 | static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[], |
| 2286 | unsigned int Length) |
| 2287 | { |
| 2288 | tp->MacStat.rx_packets++; |
| 2289 | tp->MacStat.rx_bytes += Length; |
| 2290 | |
| 2291 | /* Test functional bit */ |
| 2292 | if(DataPtr[2] & GROUP_BIT) |
| 2293 | tp->MacStat.multicast++; |
| 2294 | |
| 2295 | return; |
| 2296 | } |
| 2297 | |
| 2298 | static int tms380tr_set_mac_address(struct net_device *dev, void *addr) |
| 2299 | { |
| 2300 | struct net_local *tp = netdev_priv(dev); |
| 2301 | struct sockaddr *saddr = addr; |
| 2302 | |
| 2303 | if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) { |
| 2304 | printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name); |
| 2305 | return -EIO; |
| 2306 | } |
| 2307 | memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len); |
| 2308 | return 0; |
| 2309 | } |
| 2310 | |
| 2311 | #if TMS380TR_DEBUG > 0 |
| 2312 | /* |
| 2313 | * Dump Packet (data) |
| 2314 | */ |
| 2315 | static void tms380tr_dump(unsigned char *Data, int length) |
| 2316 | { |
| 2317 | int i, j; |
| 2318 | |
| 2319 | for (i = 0, j = 0; i < length / 8; i++, j += 8) |
| 2320 | { |
| 2321 | printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n", |
| 2322 | Data[j+0],Data[j+1],Data[j+2],Data[j+3], |
| 2323 | Data[j+4],Data[j+5],Data[j+6],Data[j+7]); |
| 2324 | } |
| 2325 | |
| 2326 | return; |
| 2327 | } |
| 2328 | #endif |
| 2329 | |
| 2330 | void tmsdev_term(struct net_device *dev) |
| 2331 | { |
| 2332 | struct net_local *tp; |
| 2333 | |
| 2334 | tp = netdev_priv(dev); |
| 2335 | pci_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local), |
| 2336 | PCI_DMA_BIDIRECTIONAL); |
| 2337 | } |
| 2338 | |
| 2339 | int tmsdev_init(struct net_device *dev, unsigned long dmalimit, |
| 2340 | struct pci_dev *pdev) |
| 2341 | { |
| 2342 | struct net_local *tms_local; |
| 2343 | |
| 2344 | memset(dev->priv, 0, sizeof(struct net_local)); |
| 2345 | tms_local = netdev_priv(dev); |
| 2346 | init_waitqueue_head(&tms_local->wait_for_tok_int); |
| 2347 | tms_local->dmalimit = dmalimit; |
| 2348 | tms_local->pdev = pdev; |
| 2349 | tms_local->dmabuffer = pci_map_single(pdev, (void *)tms_local, |
| 2350 | sizeof(struct net_local), PCI_DMA_BIDIRECTIONAL); |
| 2351 | if (tms_local->dmabuffer + sizeof(struct net_local) > dmalimit) |
| 2352 | { |
| 2353 | printk(KERN_INFO "%s: Memory not accessible for DMA\n", |
| 2354 | dev->name); |
| 2355 | tmsdev_term(dev); |
| 2356 | return -ENOMEM; |
| 2357 | } |
| 2358 | |
| 2359 | /* These can be overridden by the card driver if needed */ |
| 2360 | dev->open = tms380tr_open; |
| 2361 | dev->stop = tms380tr_close; |
| 2362 | dev->do_ioctl = NULL; |
| 2363 | dev->hard_start_xmit = tms380tr_send_packet; |
| 2364 | dev->tx_timeout = tms380tr_timeout; |
| 2365 | dev->watchdog_timeo = HZ; |
| 2366 | dev->get_stats = tms380tr_get_stats; |
| 2367 | dev->set_multicast_list = &tms380tr_set_multicast_list; |
| 2368 | dev->set_mac_address = tms380tr_set_mac_address; |
| 2369 | |
| 2370 | return 0; |
| 2371 | } |
| 2372 | |
| 2373 | #ifdef MODULE |
| 2374 | |
| 2375 | EXPORT_SYMBOL(tms380tr_open); |
| 2376 | EXPORT_SYMBOL(tms380tr_close); |
| 2377 | EXPORT_SYMBOL(tms380tr_interrupt); |
| 2378 | EXPORT_SYMBOL(tmsdev_init); |
| 2379 | EXPORT_SYMBOL(tmsdev_term); |
| 2380 | EXPORT_SYMBOL(tms380tr_wait); |
| 2381 | |
Adrian Bunk | de70b4c | 2005-05-02 03:46:43 +0200 | [diff] [blame] | 2382 | static struct module *TMS380_module = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | |
| 2384 | int init_module(void) |
| 2385 | { |
| 2386 | printk(KERN_DEBUG "%s", version); |
| 2387 | |
| 2388 | TMS380_module = &__this_module; |
| 2389 | return 0; |
| 2390 | } |
| 2391 | |
| 2392 | void cleanup_module(void) |
| 2393 | { |
| 2394 | TMS380_module = NULL; |
| 2395 | } |
| 2396 | #endif |
| 2397 | |
| 2398 | MODULE_LICENSE("GPL"); |
| 2399 | |