Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * nicstar.c |
| 4 | * |
| 5 | * Device driver supporting CBR for IDT 77201/77211 "NICStAR" based cards. |
| 6 | * |
| 7 | * IMPORTANT: The included file nicstarmac.c was NOT WRITTEN BY ME. |
| 8 | * It was taken from the frle-0.22 device driver. |
| 9 | * As the file doesn't have a copyright notice, in the file |
| 10 | * nicstarmac.copyright I put the copyright notice from the |
| 11 | * frle-0.22 device driver. |
| 12 | * Some code is based on the nicstar driver by M. Welsh. |
| 13 | * |
| 14 | * Author: Rui Prior (rprior@inescn.pt) |
| 15 | * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999 |
| 16 | * |
| 17 | * |
| 18 | * (C) INESC 1999 |
| 19 | * |
| 20 | * |
| 21 | ******************************************************************************/ |
| 22 | |
| 23 | |
| 24 | /**** IMPORTANT INFORMATION *************************************************** |
| 25 | * |
| 26 | * There are currently three types of spinlocks: |
| 27 | * |
| 28 | * 1 - Per card interrupt spinlock (to protect structures and such) |
| 29 | * 2 - Per SCQ scq spinlock |
| 30 | * 3 - Per card resource spinlock (to access registers, etc.) |
| 31 | * |
| 32 | * These must NEVER be grabbed in reverse order. |
| 33 | * |
| 34 | ******************************************************************************/ |
| 35 | |
| 36 | /* Header files ***************************************************************/ |
| 37 | |
| 38 | #include <linux/module.h> |
| 39 | #include <linux/config.h> |
| 40 | #include <linux/kernel.h> |
| 41 | #include <linux/skbuff.h> |
| 42 | #include <linux/atmdev.h> |
| 43 | #include <linux/atm.h> |
| 44 | #include <linux/pci.h> |
| 45 | #include <linux/types.h> |
| 46 | #include <linux/string.h> |
| 47 | #include <linux/delay.h> |
| 48 | #include <linux/init.h> |
| 49 | #include <linux/sched.h> |
| 50 | #include <linux/timer.h> |
| 51 | #include <linux/interrupt.h> |
| 52 | #include <linux/bitops.h> |
| 53 | #include <asm/io.h> |
| 54 | #include <asm/uaccess.h> |
| 55 | #include <asm/atomic.h> |
| 56 | #include "nicstar.h" |
| 57 | #ifdef CONFIG_ATM_NICSTAR_USE_SUNI |
| 58 | #include "suni.h" |
| 59 | #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ |
| 60 | #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 |
| 61 | #include "idt77105.h" |
| 62 | #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ |
| 63 | |
| 64 | #if BITS_PER_LONG != 32 |
| 65 | # error FIXME: this driver requires a 32-bit platform |
| 66 | #endif |
| 67 | |
| 68 | /* Additional code ************************************************************/ |
| 69 | |
| 70 | #include "nicstarmac.c" |
| 71 | |
| 72 | |
| 73 | /* Configurable parameters ****************************************************/ |
| 74 | |
| 75 | #undef PHY_LOOPBACK |
| 76 | #undef TX_DEBUG |
| 77 | #undef RX_DEBUG |
| 78 | #undef GENERAL_DEBUG |
| 79 | #undef EXTRA_DEBUG |
| 80 | |
| 81 | #undef NS_USE_DESTRUCTORS /* For now keep this undefined unless you know |
| 82 | you're going to use only raw ATM */ |
| 83 | |
| 84 | |
| 85 | /* Do not touch these *********************************************************/ |
| 86 | |
| 87 | #ifdef TX_DEBUG |
| 88 | #define TXPRINTK(args...) printk(args) |
| 89 | #else |
| 90 | #define TXPRINTK(args...) |
| 91 | #endif /* TX_DEBUG */ |
| 92 | |
| 93 | #ifdef RX_DEBUG |
| 94 | #define RXPRINTK(args...) printk(args) |
| 95 | #else |
| 96 | #define RXPRINTK(args...) |
| 97 | #endif /* RX_DEBUG */ |
| 98 | |
| 99 | #ifdef GENERAL_DEBUG |
| 100 | #define PRINTK(args...) printk(args) |
| 101 | #else |
| 102 | #define PRINTK(args...) |
| 103 | #endif /* GENERAL_DEBUG */ |
| 104 | |
| 105 | #ifdef EXTRA_DEBUG |
| 106 | #define XPRINTK(args...) printk(args) |
| 107 | #else |
| 108 | #define XPRINTK(args...) |
| 109 | #endif /* EXTRA_DEBUG */ |
| 110 | |
| 111 | |
| 112 | /* Macros *********************************************************************/ |
| 113 | |
| 114 | #define CMD_BUSY(card) (readl((card)->membase + STAT) & NS_STAT_CMDBZ) |
| 115 | |
| 116 | #define NS_DELAY mdelay(1) |
| 117 | |
| 118 | #define ALIGN_BUS_ADDR(addr, alignment) \ |
| 119 | ((((u32) (addr)) + (((u32) (alignment)) - 1)) & ~(((u32) (alignment)) - 1)) |
| 120 | #define ALIGN_ADDRESS(addr, alignment) \ |
| 121 | bus_to_virt(ALIGN_BUS_ADDR(virt_to_bus(addr), alignment)) |
| 122 | |
| 123 | #undef CEIL |
| 124 | |
| 125 | #ifndef ATM_SKB |
| 126 | #define ATM_SKB(s) (&(s)->atm) |
| 127 | #endif |
| 128 | |
| 129 | /* Spinlock debugging stuff */ |
| 130 | #ifdef NS_DEBUG_SPINLOCKS /* See nicstar.h */ |
| 131 | #define ns_grab_int_lock(card,flags) \ |
| 132 | do { \ |
| 133 | unsigned long nsdsf, nsdsf2; \ |
| 134 | local_irq_save(flags); \ |
| 135 | save_flags(nsdsf); cli();\ |
| 136 | if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \ |
| 137 | (flags)&(1<<9)?"en":"dis"); \ |
| 138 | if (spin_is_locked(&(card)->int_lock) && \ |
| 139 | (card)->cpu_int == smp_processor_id()) { \ |
| 140 | printk("nicstar.c: line %d (cpu %d) int_lock already locked at line %d (cpu %d)\n", \ |
| 141 | __LINE__, smp_processor_id(), (card)->has_int_lock, \ |
| 142 | (card)->cpu_int); \ |
| 143 | printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \ |
| 144 | } \ |
| 145 | if (spin_is_locked(&(card)->res_lock) && \ |
| 146 | (card)->cpu_res == smp_processor_id()) { \ |
| 147 | printk("nicstar.c: line %d (cpu %d) res_lock locked at line %d (cpu %d)(trying int)\n", \ |
| 148 | __LINE__, smp_processor_id(), (card)->has_res_lock, \ |
| 149 | (card)->cpu_res); \ |
| 150 | printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \ |
| 151 | } \ |
| 152 | spin_lock_irq(&(card)->int_lock); \ |
| 153 | (card)->has_int_lock = __LINE__; \ |
| 154 | (card)->cpu_int = smp_processor_id(); \ |
| 155 | restore_flags(nsdsf); } while (0) |
| 156 | #define ns_grab_res_lock(card,flags) \ |
| 157 | do { \ |
| 158 | unsigned long nsdsf, nsdsf2; \ |
| 159 | local_irq_save(flags); \ |
| 160 | save_flags(nsdsf); cli();\ |
| 161 | if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \ |
| 162 | (flags)&(1<<9)?"en":"dis"); \ |
| 163 | if (spin_is_locked(&(card)->res_lock) && \ |
| 164 | (card)->cpu_res == smp_processor_id()) { \ |
| 165 | printk("nicstar.c: line %d (cpu %d) res_lock already locked at line %d (cpu %d)\n", \ |
| 166 | __LINE__, smp_processor_id(), (card)->has_res_lock, \ |
| 167 | (card)->cpu_res); \ |
| 168 | printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \ |
| 169 | } \ |
| 170 | spin_lock_irq(&(card)->res_lock); \ |
| 171 | (card)->has_res_lock = __LINE__; \ |
| 172 | (card)->cpu_res = smp_processor_id(); \ |
| 173 | restore_flags(nsdsf); } while (0) |
| 174 | #define ns_grab_scq_lock(card,scq,flags) \ |
| 175 | do { \ |
| 176 | unsigned long nsdsf, nsdsf2; \ |
| 177 | local_irq_save(flags); \ |
| 178 | save_flags(nsdsf); cli();\ |
| 179 | if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \ |
| 180 | (flags)&(1<<9)?"en":"dis"); \ |
| 181 | if (spin_is_locked(&(scq)->lock) && \ |
| 182 | (scq)->cpu_lock == smp_processor_id()) { \ |
| 183 | printk("nicstar.c: line %d (cpu %d) this scq_lock already locked at line %d (cpu %d)\n", \ |
| 184 | __LINE__, smp_processor_id(), (scq)->has_lock, \ |
| 185 | (scq)->cpu_lock); \ |
| 186 | printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \ |
| 187 | } \ |
| 188 | if (spin_is_locked(&(card)->res_lock) && \ |
| 189 | (card)->cpu_res == smp_processor_id()) { \ |
| 190 | printk("nicstar.c: line %d (cpu %d) res_lock locked at line %d (cpu %d)(trying scq)\n", \ |
| 191 | __LINE__, smp_processor_id(), (card)->has_res_lock, \ |
| 192 | (card)->cpu_res); \ |
| 193 | printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \ |
| 194 | } \ |
| 195 | spin_lock_irq(&(scq)->lock); \ |
| 196 | (scq)->has_lock = __LINE__; \ |
| 197 | (scq)->cpu_lock = smp_processor_id(); \ |
| 198 | restore_flags(nsdsf); } while (0) |
| 199 | #else /* !NS_DEBUG_SPINLOCKS */ |
| 200 | #define ns_grab_int_lock(card,flags) \ |
| 201 | spin_lock_irqsave(&(card)->int_lock,(flags)) |
| 202 | #define ns_grab_res_lock(card,flags) \ |
| 203 | spin_lock_irqsave(&(card)->res_lock,(flags)) |
| 204 | #define ns_grab_scq_lock(card,scq,flags) \ |
| 205 | spin_lock_irqsave(&(scq)->lock,flags) |
| 206 | #endif /* NS_DEBUG_SPINLOCKS */ |
| 207 | |
| 208 | |
| 209 | /* Function declarations ******************************************************/ |
| 210 | |
| 211 | static u32 ns_read_sram(ns_dev *card, u32 sram_address); |
| 212 | static void ns_write_sram(ns_dev *card, u32 sram_address, u32 *value, int count); |
| 213 | static int __devinit ns_init_card(int i, struct pci_dev *pcidev); |
| 214 | static void __devinit ns_init_card_error(ns_dev *card, int error); |
| 215 | static scq_info *get_scq(int size, u32 scd); |
| 216 | static void free_scq(scq_info *scq, struct atm_vcc *vcc); |
| 217 | static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, |
| 218 | u32 handle2, u32 addr2); |
| 219 | static irqreturn_t ns_irq_handler(int irq, void *dev_id, struct pt_regs *regs); |
| 220 | static int ns_open(struct atm_vcc *vcc); |
| 221 | static void ns_close(struct atm_vcc *vcc); |
| 222 | static void fill_tst(ns_dev *card, int n, vc_map *vc); |
| 223 | static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb); |
| 224 | static int push_scqe(ns_dev *card, vc_map *vc, scq_info *scq, ns_scqe *tbd, |
| 225 | struct sk_buff *skb); |
| 226 | static void process_tsq(ns_dev *card); |
| 227 | static void drain_scq(ns_dev *card, scq_info *scq, int pos); |
| 228 | static void process_rsq(ns_dev *card); |
| 229 | static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe); |
| 230 | #ifdef NS_USE_DESTRUCTORS |
| 231 | static void ns_sb_destructor(struct sk_buff *sb); |
| 232 | static void ns_lb_destructor(struct sk_buff *lb); |
| 233 | static void ns_hb_destructor(struct sk_buff *hb); |
| 234 | #endif /* NS_USE_DESTRUCTORS */ |
| 235 | static void recycle_rx_buf(ns_dev *card, struct sk_buff *skb); |
| 236 | static void recycle_iovec_rx_bufs(ns_dev *card, struct iovec *iov, int count); |
| 237 | static void recycle_iov_buf(ns_dev *card, struct sk_buff *iovb); |
| 238 | static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb); |
| 239 | static void dequeue_lg_buf(ns_dev *card, struct sk_buff *lb); |
| 240 | static int ns_proc_read(struct atm_dev *dev, loff_t *pos, char *page); |
| 241 | static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg); |
| 242 | static void which_list(ns_dev *card, struct sk_buff *skb); |
| 243 | static void ns_poll(unsigned long arg); |
| 244 | static int ns_parse_mac(char *mac, unsigned char *esi); |
| 245 | static short ns_h2i(char c); |
| 246 | static void ns_phy_put(struct atm_dev *dev, unsigned char value, |
| 247 | unsigned long addr); |
| 248 | static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr); |
| 249 | |
| 250 | |
| 251 | |
| 252 | /* Global variables ***********************************************************/ |
| 253 | |
| 254 | static struct ns_dev *cards[NS_MAX_CARDS]; |
| 255 | static unsigned num_cards; |
| 256 | static struct atmdev_ops atm_ops = |
| 257 | { |
| 258 | .open = ns_open, |
| 259 | .close = ns_close, |
| 260 | .ioctl = ns_ioctl, |
| 261 | .send = ns_send, |
| 262 | .phy_put = ns_phy_put, |
| 263 | .phy_get = ns_phy_get, |
| 264 | .proc_read = ns_proc_read, |
| 265 | .owner = THIS_MODULE, |
| 266 | }; |
| 267 | static struct timer_list ns_timer; |
| 268 | static char *mac[NS_MAX_CARDS]; |
| 269 | module_param_array(mac, charp, NULL, 0); |
| 270 | MODULE_LICENSE("GPL"); |
| 271 | |
| 272 | |
| 273 | /* Functions*******************************************************************/ |
| 274 | |
| 275 | static int __devinit nicstar_init_one(struct pci_dev *pcidev, |
| 276 | const struct pci_device_id *ent) |
| 277 | { |
| 278 | static int index = -1; |
| 279 | unsigned int error; |
| 280 | |
| 281 | index++; |
| 282 | cards[index] = NULL; |
| 283 | |
| 284 | error = ns_init_card(index, pcidev); |
| 285 | if (error) { |
| 286 | cards[index--] = NULL; /* don't increment index */ |
| 287 | goto err_out; |
| 288 | } |
| 289 | |
| 290 | return 0; |
| 291 | err_out: |
| 292 | return -ENODEV; |
| 293 | } |
| 294 | |
| 295 | |
| 296 | |
| 297 | static void __devexit nicstar_remove_one(struct pci_dev *pcidev) |
| 298 | { |
| 299 | int i, j; |
| 300 | ns_dev *card = pci_get_drvdata(pcidev); |
| 301 | struct sk_buff *hb; |
| 302 | struct sk_buff *iovb; |
| 303 | struct sk_buff *lb; |
| 304 | struct sk_buff *sb; |
| 305 | |
| 306 | i = card->index; |
| 307 | |
| 308 | if (cards[i] == NULL) |
| 309 | return; |
| 310 | |
| 311 | if (card->atmdev->phy && card->atmdev->phy->stop) |
| 312 | card->atmdev->phy->stop(card->atmdev); |
| 313 | |
| 314 | /* Stop everything */ |
| 315 | writel(0x00000000, card->membase + CFG); |
| 316 | |
| 317 | /* De-register device */ |
| 318 | atm_dev_deregister(card->atmdev); |
| 319 | |
| 320 | /* Disable PCI device */ |
| 321 | pci_disable_device(pcidev); |
| 322 | |
| 323 | /* Free up resources */ |
| 324 | j = 0; |
| 325 | PRINTK("nicstar%d: freeing %d huge buffers.\n", i, card->hbpool.count); |
| 326 | while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) |
| 327 | { |
| 328 | dev_kfree_skb_any(hb); |
| 329 | j++; |
| 330 | } |
| 331 | PRINTK("nicstar%d: %d huge buffers freed.\n", i, j); |
| 332 | j = 0; |
| 333 | PRINTK("nicstar%d: freeing %d iovec buffers.\n", i, card->iovpool.count); |
| 334 | while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) |
| 335 | { |
| 336 | dev_kfree_skb_any(iovb); |
| 337 | j++; |
| 338 | } |
| 339 | PRINTK("nicstar%d: %d iovec buffers freed.\n", i, j); |
| 340 | while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) |
| 341 | dev_kfree_skb_any(lb); |
| 342 | while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) |
| 343 | dev_kfree_skb_any(sb); |
| 344 | free_scq(card->scq0, NULL); |
| 345 | for (j = 0; j < NS_FRSCD_NUM; j++) |
| 346 | { |
| 347 | if (card->scd2vc[j] != NULL) |
| 348 | free_scq(card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc); |
| 349 | } |
| 350 | kfree(card->rsq.org); |
| 351 | kfree(card->tsq.org); |
| 352 | free_irq(card->pcidev->irq, card); |
| 353 | iounmap(card->membase); |
| 354 | kfree(card); |
| 355 | } |
| 356 | |
| 357 | |
| 358 | |
| 359 | static struct pci_device_id nicstar_pci_tbl[] __devinitdata = |
| 360 | { |
| 361 | {PCI_VENDOR_ID_IDT, PCI_DEVICE_ID_IDT_IDT77201, |
| 362 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| 363 | {0,} /* terminate list */ |
| 364 | }; |
| 365 | MODULE_DEVICE_TABLE(pci, nicstar_pci_tbl); |
| 366 | |
| 367 | |
| 368 | |
| 369 | static struct pci_driver nicstar_driver = { |
| 370 | .name = "nicstar", |
| 371 | .id_table = nicstar_pci_tbl, |
| 372 | .probe = nicstar_init_one, |
| 373 | .remove = __devexit_p(nicstar_remove_one), |
| 374 | }; |
| 375 | |
| 376 | |
| 377 | |
| 378 | static int __init nicstar_init(void) |
| 379 | { |
| 380 | unsigned error = 0; /* Initialized to remove compile warning */ |
| 381 | |
| 382 | XPRINTK("nicstar: nicstar_init() called.\n"); |
| 383 | |
| 384 | error = pci_register_driver(&nicstar_driver); |
| 385 | |
| 386 | TXPRINTK("nicstar: TX debug enabled.\n"); |
| 387 | RXPRINTK("nicstar: RX debug enabled.\n"); |
| 388 | PRINTK("nicstar: General debug enabled.\n"); |
| 389 | #ifdef PHY_LOOPBACK |
| 390 | printk("nicstar: using PHY loopback.\n"); |
| 391 | #endif /* PHY_LOOPBACK */ |
| 392 | XPRINTK("nicstar: nicstar_init() returned.\n"); |
| 393 | |
| 394 | if (!error) { |
| 395 | init_timer(&ns_timer); |
| 396 | ns_timer.expires = jiffies + NS_POLL_PERIOD; |
| 397 | ns_timer.data = 0UL; |
| 398 | ns_timer.function = ns_poll; |
| 399 | add_timer(&ns_timer); |
| 400 | } |
| 401 | |
| 402 | return error; |
| 403 | } |
| 404 | |
| 405 | |
| 406 | |
| 407 | static void __exit nicstar_cleanup(void) |
| 408 | { |
| 409 | XPRINTK("nicstar: nicstar_cleanup() called.\n"); |
| 410 | |
| 411 | del_timer(&ns_timer); |
| 412 | |
| 413 | pci_unregister_driver(&nicstar_driver); |
| 414 | |
| 415 | XPRINTK("nicstar: nicstar_cleanup() returned.\n"); |
| 416 | } |
| 417 | |
| 418 | |
| 419 | |
| 420 | static u32 ns_read_sram(ns_dev *card, u32 sram_address) |
| 421 | { |
| 422 | unsigned long flags; |
| 423 | u32 data; |
| 424 | sram_address <<= 2; |
| 425 | sram_address &= 0x0007FFFC; /* address must be dword aligned */ |
| 426 | sram_address |= 0x50000000; /* SRAM read command */ |
| 427 | ns_grab_res_lock(card, flags); |
| 428 | while (CMD_BUSY(card)); |
| 429 | writel(sram_address, card->membase + CMD); |
| 430 | while (CMD_BUSY(card)); |
| 431 | data = readl(card->membase + DR0); |
| 432 | spin_unlock_irqrestore(&card->res_lock, flags); |
| 433 | return data; |
| 434 | } |
| 435 | |
| 436 | |
| 437 | |
| 438 | static void ns_write_sram(ns_dev *card, u32 sram_address, u32 *value, int count) |
| 439 | { |
| 440 | unsigned long flags; |
| 441 | int i, c; |
| 442 | count--; /* count range now is 0..3 instead of 1..4 */ |
| 443 | c = count; |
| 444 | c <<= 2; /* to use increments of 4 */ |
| 445 | ns_grab_res_lock(card, flags); |
| 446 | while (CMD_BUSY(card)); |
| 447 | for (i = 0; i <= c; i += 4) |
| 448 | writel(*(value++), card->membase + i); |
| 449 | /* Note: DR# registers are the first 4 dwords in nicstar's memspace, |
| 450 | so card->membase + DR0 == card->membase */ |
| 451 | sram_address <<= 2; |
| 452 | sram_address &= 0x0007FFFC; |
| 453 | sram_address |= (0x40000000 | count); |
| 454 | writel(sram_address, card->membase + CMD); |
| 455 | spin_unlock_irqrestore(&card->res_lock, flags); |
| 456 | } |
| 457 | |
| 458 | |
| 459 | static int __devinit ns_init_card(int i, struct pci_dev *pcidev) |
| 460 | { |
| 461 | int j; |
| 462 | struct ns_dev *card = NULL; |
| 463 | unsigned char pci_latency; |
| 464 | unsigned error; |
| 465 | u32 data; |
| 466 | u32 u32d[4]; |
| 467 | u32 ns_cfg_rctsize; |
| 468 | int bcount; |
| 469 | unsigned long membase; |
| 470 | |
| 471 | error = 0; |
| 472 | |
| 473 | if (pci_enable_device(pcidev)) |
| 474 | { |
| 475 | printk("nicstar%d: can't enable PCI device\n", i); |
| 476 | error = 2; |
| 477 | ns_init_card_error(card, error); |
| 478 | return error; |
| 479 | } |
| 480 | |
| 481 | if ((card = kmalloc(sizeof(ns_dev), GFP_KERNEL)) == NULL) |
| 482 | { |
| 483 | printk("nicstar%d: can't allocate memory for device structure.\n", i); |
| 484 | error = 2; |
| 485 | ns_init_card_error(card, error); |
| 486 | return error; |
| 487 | } |
| 488 | cards[i] = card; |
| 489 | spin_lock_init(&card->int_lock); |
| 490 | spin_lock_init(&card->res_lock); |
| 491 | |
| 492 | pci_set_drvdata(pcidev, card); |
| 493 | |
| 494 | card->index = i; |
| 495 | card->atmdev = NULL; |
| 496 | card->pcidev = pcidev; |
| 497 | membase = pci_resource_start(pcidev, 1); |
| 498 | card->membase = ioremap(membase, NS_IOREMAP_SIZE); |
| 499 | if (card->membase == 0) |
| 500 | { |
| 501 | printk("nicstar%d: can't ioremap() membase.\n",i); |
| 502 | error = 3; |
| 503 | ns_init_card_error(card, error); |
| 504 | return error; |
| 505 | } |
| 506 | PRINTK("nicstar%d: membase at 0x%x.\n", i, card->membase); |
| 507 | |
| 508 | pci_set_master(pcidev); |
| 509 | |
| 510 | if (pci_read_config_byte(pcidev, PCI_LATENCY_TIMER, &pci_latency) != 0) |
| 511 | { |
| 512 | printk("nicstar%d: can't read PCI latency timer.\n", i); |
| 513 | error = 6; |
| 514 | ns_init_card_error(card, error); |
| 515 | return error; |
| 516 | } |
| 517 | #ifdef NS_PCI_LATENCY |
| 518 | if (pci_latency < NS_PCI_LATENCY) |
| 519 | { |
| 520 | PRINTK("nicstar%d: setting PCI latency timer to %d.\n", i, NS_PCI_LATENCY); |
| 521 | for (j = 1; j < 4; j++) |
| 522 | { |
| 523 | if (pci_write_config_byte(pcidev, PCI_LATENCY_TIMER, NS_PCI_LATENCY) != 0) |
| 524 | break; |
| 525 | } |
| 526 | if (j == 4) |
| 527 | { |
| 528 | printk("nicstar%d: can't set PCI latency timer to %d.\n", i, NS_PCI_LATENCY); |
| 529 | error = 7; |
| 530 | ns_init_card_error(card, error); |
| 531 | return error; |
| 532 | } |
| 533 | } |
| 534 | #endif /* NS_PCI_LATENCY */ |
| 535 | |
| 536 | /* Clear timer overflow */ |
| 537 | data = readl(card->membase + STAT); |
| 538 | if (data & NS_STAT_TMROF) |
| 539 | writel(NS_STAT_TMROF, card->membase + STAT); |
| 540 | |
| 541 | /* Software reset */ |
| 542 | writel(NS_CFG_SWRST, card->membase + CFG); |
| 543 | NS_DELAY; |
| 544 | writel(0x00000000, card->membase + CFG); |
| 545 | |
| 546 | /* PHY reset */ |
| 547 | writel(0x00000008, card->membase + GP); |
| 548 | NS_DELAY; |
| 549 | writel(0x00000001, card->membase + GP); |
| 550 | NS_DELAY; |
| 551 | while (CMD_BUSY(card)); |
| 552 | writel(NS_CMD_WRITE_UTILITY | 0x00000100, card->membase + CMD); /* Sync UTOPIA with SAR clock */ |
| 553 | NS_DELAY; |
| 554 | |
| 555 | /* Detect PHY type */ |
| 556 | while (CMD_BUSY(card)); |
| 557 | writel(NS_CMD_READ_UTILITY | 0x00000200, card->membase + CMD); |
| 558 | while (CMD_BUSY(card)); |
| 559 | data = readl(card->membase + DR0); |
| 560 | switch(data) { |
| 561 | case 0x00000009: |
| 562 | printk("nicstar%d: PHY seems to be 25 Mbps.\n", i); |
| 563 | card->max_pcr = ATM_25_PCR; |
| 564 | while(CMD_BUSY(card)); |
| 565 | writel(0x00000008, card->membase + DR0); |
| 566 | writel(NS_CMD_WRITE_UTILITY | 0x00000200, card->membase + CMD); |
| 567 | /* Clear an eventual pending interrupt */ |
| 568 | writel(NS_STAT_SFBQF, card->membase + STAT); |
| 569 | #ifdef PHY_LOOPBACK |
| 570 | while(CMD_BUSY(card)); |
| 571 | writel(0x00000022, card->membase + DR0); |
| 572 | writel(NS_CMD_WRITE_UTILITY | 0x00000202, card->membase + CMD); |
| 573 | #endif /* PHY_LOOPBACK */ |
| 574 | break; |
| 575 | case 0x00000030: |
| 576 | case 0x00000031: |
| 577 | printk("nicstar%d: PHY seems to be 155 Mbps.\n", i); |
| 578 | card->max_pcr = ATM_OC3_PCR; |
| 579 | #ifdef PHY_LOOPBACK |
| 580 | while(CMD_BUSY(card)); |
| 581 | writel(0x00000002, card->membase + DR0); |
| 582 | writel(NS_CMD_WRITE_UTILITY | 0x00000205, card->membase + CMD); |
| 583 | #endif /* PHY_LOOPBACK */ |
| 584 | break; |
| 585 | default: |
| 586 | printk("nicstar%d: unknown PHY type (0x%08X).\n", i, data); |
| 587 | error = 8; |
| 588 | ns_init_card_error(card, error); |
| 589 | return error; |
| 590 | } |
| 591 | writel(0x00000000, card->membase + GP); |
| 592 | |
| 593 | /* Determine SRAM size */ |
| 594 | data = 0x76543210; |
| 595 | ns_write_sram(card, 0x1C003, &data, 1); |
| 596 | data = 0x89ABCDEF; |
| 597 | ns_write_sram(card, 0x14003, &data, 1); |
| 598 | if (ns_read_sram(card, 0x14003) == 0x89ABCDEF && |
| 599 | ns_read_sram(card, 0x1C003) == 0x76543210) |
| 600 | card->sram_size = 128; |
| 601 | else |
| 602 | card->sram_size = 32; |
| 603 | PRINTK("nicstar%d: %dK x 32bit SRAM size.\n", i, card->sram_size); |
| 604 | |
| 605 | card->rct_size = NS_MAX_RCTSIZE; |
| 606 | |
| 607 | #if (NS_MAX_RCTSIZE == 4096) |
| 608 | if (card->sram_size == 128) |
| 609 | printk("nicstar%d: limiting maximum VCI. See NS_MAX_RCTSIZE in nicstar.h\n", i); |
| 610 | #elif (NS_MAX_RCTSIZE == 16384) |
| 611 | if (card->sram_size == 32) |
| 612 | { |
| 613 | printk("nicstar%d: wasting memory. See NS_MAX_RCTSIZE in nicstar.h\n", i); |
| 614 | card->rct_size = 4096; |
| 615 | } |
| 616 | #else |
| 617 | #error NS_MAX_RCTSIZE must be either 4096 or 16384 in nicstar.c |
| 618 | #endif |
| 619 | |
| 620 | card->vpibits = NS_VPIBITS; |
| 621 | if (card->rct_size == 4096) |
| 622 | card->vcibits = 12 - NS_VPIBITS; |
| 623 | else /* card->rct_size == 16384 */ |
| 624 | card->vcibits = 14 - NS_VPIBITS; |
| 625 | |
| 626 | /* Initialize the nicstar eeprom/eprom stuff, for the MAC addr */ |
| 627 | if (mac[i] == NULL) |
| 628 | nicstar_init_eprom(card->membase); |
| 629 | |
| 630 | if (request_irq(pcidev->irq, &ns_irq_handler, SA_INTERRUPT | SA_SHIRQ, "nicstar", card) != 0) |
| 631 | { |
| 632 | printk("nicstar%d: can't allocate IRQ %d.\n", i, pcidev->irq); |
| 633 | error = 9; |
| 634 | ns_init_card_error(card, error); |
| 635 | return error; |
| 636 | } |
| 637 | |
| 638 | /* Set the VPI/VCI MSb mask to zero so we can receive OAM cells */ |
| 639 | writel(0x00000000, card->membase + VPM); |
| 640 | |
| 641 | /* Initialize TSQ */ |
| 642 | card->tsq.org = kmalloc(NS_TSQSIZE + NS_TSQ_ALIGNMENT, GFP_KERNEL); |
| 643 | if (card->tsq.org == NULL) |
| 644 | { |
| 645 | printk("nicstar%d: can't allocate TSQ.\n", i); |
| 646 | error = 10; |
| 647 | ns_init_card_error(card, error); |
| 648 | return error; |
| 649 | } |
| 650 | card->tsq.base = (ns_tsi *) ALIGN_ADDRESS(card->tsq.org, NS_TSQ_ALIGNMENT); |
| 651 | card->tsq.next = card->tsq.base; |
| 652 | card->tsq.last = card->tsq.base + (NS_TSQ_NUM_ENTRIES - 1); |
| 653 | for (j = 0; j < NS_TSQ_NUM_ENTRIES; j++) |
| 654 | ns_tsi_init(card->tsq.base + j); |
| 655 | writel(0x00000000, card->membase + TSQH); |
| 656 | writel((u32) virt_to_bus(card->tsq.base), card->membase + TSQB); |
| 657 | PRINTK("nicstar%d: TSQ base at 0x%x 0x%x 0x%x.\n", i, (u32) card->tsq.base, |
| 658 | (u32) virt_to_bus(card->tsq.base), readl(card->membase + TSQB)); |
| 659 | |
| 660 | /* Initialize RSQ */ |
| 661 | card->rsq.org = kmalloc(NS_RSQSIZE + NS_RSQ_ALIGNMENT, GFP_KERNEL); |
| 662 | if (card->rsq.org == NULL) |
| 663 | { |
| 664 | printk("nicstar%d: can't allocate RSQ.\n", i); |
| 665 | error = 11; |
| 666 | ns_init_card_error(card, error); |
| 667 | return error; |
| 668 | } |
| 669 | card->rsq.base = (ns_rsqe *) ALIGN_ADDRESS(card->rsq.org, NS_RSQ_ALIGNMENT); |
| 670 | card->rsq.next = card->rsq.base; |
| 671 | card->rsq.last = card->rsq.base + (NS_RSQ_NUM_ENTRIES - 1); |
| 672 | for (j = 0; j < NS_RSQ_NUM_ENTRIES; j++) |
| 673 | ns_rsqe_init(card->rsq.base + j); |
| 674 | writel(0x00000000, card->membase + RSQH); |
| 675 | writel((u32) virt_to_bus(card->rsq.base), card->membase + RSQB); |
| 676 | PRINTK("nicstar%d: RSQ base at 0x%x.\n", i, (u32) card->rsq.base); |
| 677 | |
| 678 | /* Initialize SCQ0, the only VBR SCQ used */ |
| 679 | card->scq1 = (scq_info *) NULL; |
| 680 | card->scq2 = (scq_info *) NULL; |
| 681 | card->scq0 = get_scq(VBR_SCQSIZE, NS_VRSCD0); |
| 682 | if (card->scq0 == (scq_info *) NULL) |
| 683 | { |
| 684 | printk("nicstar%d: can't get SCQ0.\n", i); |
| 685 | error = 12; |
| 686 | ns_init_card_error(card, error); |
| 687 | return error; |
| 688 | } |
| 689 | u32d[0] = (u32) virt_to_bus(card->scq0->base); |
| 690 | u32d[1] = (u32) 0x00000000; |
| 691 | u32d[2] = (u32) 0xffffffff; |
| 692 | u32d[3] = (u32) 0x00000000; |
| 693 | ns_write_sram(card, NS_VRSCD0, u32d, 4); |
| 694 | ns_write_sram(card, NS_VRSCD1, u32d, 4); /* These last two won't be used */ |
| 695 | ns_write_sram(card, NS_VRSCD2, u32d, 4); /* but are initialized, just in case... */ |
| 696 | card->scq0->scd = NS_VRSCD0; |
| 697 | PRINTK("nicstar%d: VBR-SCQ0 base at 0x%x.\n", i, (u32) card->scq0->base); |
| 698 | |
| 699 | /* Initialize TSTs */ |
| 700 | card->tst_addr = NS_TST0; |
| 701 | card->tst_free_entries = NS_TST_NUM_ENTRIES; |
| 702 | data = NS_TST_OPCODE_VARIABLE; |
| 703 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) |
| 704 | ns_write_sram(card, NS_TST0 + j, &data, 1); |
| 705 | data = ns_tste_make(NS_TST_OPCODE_END, NS_TST0); |
| 706 | ns_write_sram(card, NS_TST0 + NS_TST_NUM_ENTRIES, &data, 1); |
| 707 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) |
| 708 | ns_write_sram(card, NS_TST1 + j, &data, 1); |
| 709 | data = ns_tste_make(NS_TST_OPCODE_END, NS_TST1); |
| 710 | ns_write_sram(card, NS_TST1 + NS_TST_NUM_ENTRIES, &data, 1); |
| 711 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) |
| 712 | card->tste2vc[j] = NULL; |
| 713 | writel(NS_TST0 << 2, card->membase + TSTB); |
| 714 | |
| 715 | |
| 716 | /* Initialize RCT. AAL type is set on opening the VC. */ |
| 717 | #ifdef RCQ_SUPPORT |
| 718 | u32d[0] = NS_RCTE_RAWCELLINTEN; |
| 719 | #else |
| 720 | u32d[0] = 0x00000000; |
| 721 | #endif /* RCQ_SUPPORT */ |
| 722 | u32d[1] = 0x00000000; |
| 723 | u32d[2] = 0x00000000; |
| 724 | u32d[3] = 0xFFFFFFFF; |
| 725 | for (j = 0; j < card->rct_size; j++) |
| 726 | ns_write_sram(card, j * 4, u32d, 4); |
| 727 | |
| 728 | memset(card->vcmap, 0, NS_MAX_RCTSIZE * sizeof(vc_map)); |
| 729 | |
| 730 | for (j = 0; j < NS_FRSCD_NUM; j++) |
| 731 | card->scd2vc[j] = NULL; |
| 732 | |
| 733 | /* Initialize buffer levels */ |
| 734 | card->sbnr.min = MIN_SB; |
| 735 | card->sbnr.init = NUM_SB; |
| 736 | card->sbnr.max = MAX_SB; |
| 737 | card->lbnr.min = MIN_LB; |
| 738 | card->lbnr.init = NUM_LB; |
| 739 | card->lbnr.max = MAX_LB; |
| 740 | card->iovnr.min = MIN_IOVB; |
| 741 | card->iovnr.init = NUM_IOVB; |
| 742 | card->iovnr.max = MAX_IOVB; |
| 743 | card->hbnr.min = MIN_HB; |
| 744 | card->hbnr.init = NUM_HB; |
| 745 | card->hbnr.max = MAX_HB; |
| 746 | |
| 747 | card->sm_handle = 0x00000000; |
| 748 | card->sm_addr = 0x00000000; |
| 749 | card->lg_handle = 0x00000000; |
| 750 | card->lg_addr = 0x00000000; |
| 751 | |
| 752 | card->efbie = 1; /* To prevent push_rxbufs from enabling the interrupt */ |
| 753 | |
| 754 | /* Pre-allocate some huge buffers */ |
| 755 | skb_queue_head_init(&card->hbpool.queue); |
| 756 | card->hbpool.count = 0; |
| 757 | for (j = 0; j < NUM_HB; j++) |
| 758 | { |
| 759 | struct sk_buff *hb; |
| 760 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); |
| 761 | if (hb == NULL) |
| 762 | { |
| 763 | printk("nicstar%d: can't allocate %dth of %d huge buffers.\n", |
| 764 | i, j, NUM_HB); |
| 765 | error = 13; |
| 766 | ns_init_card_error(card, error); |
| 767 | return error; |
| 768 | } |
| 769 | skb_queue_tail(&card->hbpool.queue, hb); |
| 770 | card->hbpool.count++; |
| 771 | } |
| 772 | |
| 773 | |
| 774 | /* Allocate large buffers */ |
| 775 | skb_queue_head_init(&card->lbpool.queue); |
| 776 | card->lbpool.count = 0; /* Not used */ |
| 777 | for (j = 0; j < NUM_LB; j++) |
| 778 | { |
| 779 | struct sk_buff *lb; |
| 780 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); |
| 781 | if (lb == NULL) |
| 782 | { |
| 783 | printk("nicstar%d: can't allocate %dth of %d large buffers.\n", |
| 784 | i, j, NUM_LB); |
| 785 | error = 14; |
| 786 | ns_init_card_error(card, error); |
| 787 | return error; |
| 788 | } |
| 789 | skb_queue_tail(&card->lbpool.queue, lb); |
| 790 | skb_reserve(lb, NS_SMBUFSIZE); |
| 791 | push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); |
| 792 | /* Due to the implementation of push_rxbufs() this is 1, not 0 */ |
| 793 | if (j == 1) |
| 794 | { |
| 795 | card->rcbuf = lb; |
| 796 | card->rawch = (u32) virt_to_bus(lb->data); |
| 797 | } |
| 798 | } |
| 799 | /* Test for strange behaviour which leads to crashes */ |
| 800 | if ((bcount = ns_stat_lfbqc_get(readl(card->membase + STAT))) < card->lbnr.min) |
| 801 | { |
| 802 | printk("nicstar%d: Strange... Just allocated %d large buffers and lfbqc = %d.\n", |
| 803 | i, j, bcount); |
| 804 | error = 14; |
| 805 | ns_init_card_error(card, error); |
| 806 | return error; |
| 807 | } |
| 808 | |
| 809 | |
| 810 | /* Allocate small buffers */ |
| 811 | skb_queue_head_init(&card->sbpool.queue); |
| 812 | card->sbpool.count = 0; /* Not used */ |
| 813 | for (j = 0; j < NUM_SB; j++) |
| 814 | { |
| 815 | struct sk_buff *sb; |
| 816 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); |
| 817 | if (sb == NULL) |
| 818 | { |
| 819 | printk("nicstar%d: can't allocate %dth of %d small buffers.\n", |
| 820 | i, j, NUM_SB); |
| 821 | error = 15; |
| 822 | ns_init_card_error(card, error); |
| 823 | return error; |
| 824 | } |
| 825 | skb_queue_tail(&card->sbpool.queue, sb); |
| 826 | skb_reserve(sb, NS_AAL0_HEADER); |
| 827 | push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); |
| 828 | } |
| 829 | /* Test for strange behaviour which leads to crashes */ |
| 830 | if ((bcount = ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min) |
| 831 | { |
| 832 | printk("nicstar%d: Strange... Just allocated %d small buffers and sfbqc = %d.\n", |
| 833 | i, j, bcount); |
| 834 | error = 15; |
| 835 | ns_init_card_error(card, error); |
| 836 | return error; |
| 837 | } |
| 838 | |
| 839 | |
| 840 | /* Allocate iovec buffers */ |
| 841 | skb_queue_head_init(&card->iovpool.queue); |
| 842 | card->iovpool.count = 0; |
| 843 | for (j = 0; j < NUM_IOVB; j++) |
| 844 | { |
| 845 | struct sk_buff *iovb; |
| 846 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); |
| 847 | if (iovb == NULL) |
| 848 | { |
| 849 | printk("nicstar%d: can't allocate %dth of %d iovec buffers.\n", |
| 850 | i, j, NUM_IOVB); |
| 851 | error = 16; |
| 852 | ns_init_card_error(card, error); |
| 853 | return error; |
| 854 | } |
| 855 | skb_queue_tail(&card->iovpool.queue, iovb); |
| 856 | card->iovpool.count++; |
| 857 | } |
| 858 | |
| 859 | card->intcnt = 0; |
| 860 | |
| 861 | /* Configure NICStAR */ |
| 862 | if (card->rct_size == 4096) |
| 863 | ns_cfg_rctsize = NS_CFG_RCTSIZE_4096_ENTRIES; |
| 864 | else /* (card->rct_size == 16384) */ |
| 865 | ns_cfg_rctsize = NS_CFG_RCTSIZE_16384_ENTRIES; |
| 866 | |
| 867 | card->efbie = 1; |
| 868 | |
| 869 | /* Register device */ |
| 870 | card->atmdev = atm_dev_register("nicstar", &atm_ops, -1, NULL); |
| 871 | if (card->atmdev == NULL) |
| 872 | { |
| 873 | printk("nicstar%d: can't register device.\n", i); |
| 874 | error = 17; |
| 875 | ns_init_card_error(card, error); |
| 876 | return error; |
| 877 | } |
| 878 | |
| 879 | if (ns_parse_mac(mac[i], card->atmdev->esi)) { |
| 880 | nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET, |
| 881 | card->atmdev->esi, 6); |
| 882 | if (memcmp(card->atmdev->esi, "\x00\x00\x00\x00\x00\x00", 6) == 0) { |
| 883 | nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT, |
| 884 | card->atmdev->esi, 6); |
| 885 | } |
| 886 | } |
| 887 | |
| 888 | printk("nicstar%d: MAC address %02X:%02X:%02X:%02X:%02X:%02X\n", i, |
| 889 | card->atmdev->esi[0], card->atmdev->esi[1], card->atmdev->esi[2], |
| 890 | card->atmdev->esi[3], card->atmdev->esi[4], card->atmdev->esi[5]); |
| 891 | |
| 892 | card->atmdev->dev_data = card; |
| 893 | card->atmdev->ci_range.vpi_bits = card->vpibits; |
| 894 | card->atmdev->ci_range.vci_bits = card->vcibits; |
| 895 | card->atmdev->link_rate = card->max_pcr; |
| 896 | card->atmdev->phy = NULL; |
| 897 | |
| 898 | #ifdef CONFIG_ATM_NICSTAR_USE_SUNI |
| 899 | if (card->max_pcr == ATM_OC3_PCR) |
| 900 | suni_init(card->atmdev); |
| 901 | #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ |
| 902 | |
| 903 | #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 |
| 904 | if (card->max_pcr == ATM_25_PCR) |
| 905 | idt77105_init(card->atmdev); |
| 906 | #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ |
| 907 | |
| 908 | if (card->atmdev->phy && card->atmdev->phy->start) |
| 909 | card->atmdev->phy->start(card->atmdev); |
| 910 | |
| 911 | writel(NS_CFG_RXPATH | |
| 912 | NS_CFG_SMBUFSIZE | |
| 913 | NS_CFG_LGBUFSIZE | |
| 914 | NS_CFG_EFBIE | |
| 915 | NS_CFG_RSQSIZE | |
| 916 | NS_CFG_VPIBITS | |
| 917 | ns_cfg_rctsize | |
| 918 | NS_CFG_RXINT_NODELAY | |
| 919 | NS_CFG_RAWIE | /* Only enabled if RCQ_SUPPORT */ |
| 920 | NS_CFG_RSQAFIE | |
| 921 | NS_CFG_TXEN | |
| 922 | NS_CFG_TXIE | |
| 923 | NS_CFG_TSQFIE_OPT | /* Only enabled if ENABLE_TSQFIE */ |
| 924 | NS_CFG_PHYIE, |
| 925 | card->membase + CFG); |
| 926 | |
| 927 | num_cards++; |
| 928 | |
| 929 | return error; |
| 930 | } |
| 931 | |
| 932 | |
| 933 | |
| 934 | static void __devinit ns_init_card_error(ns_dev *card, int error) |
| 935 | { |
| 936 | if (error >= 17) |
| 937 | { |
| 938 | writel(0x00000000, card->membase + CFG); |
| 939 | } |
| 940 | if (error >= 16) |
| 941 | { |
| 942 | struct sk_buff *iovb; |
| 943 | while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) |
| 944 | dev_kfree_skb_any(iovb); |
| 945 | } |
| 946 | if (error >= 15) |
| 947 | { |
| 948 | struct sk_buff *sb; |
| 949 | while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) |
| 950 | dev_kfree_skb_any(sb); |
| 951 | free_scq(card->scq0, NULL); |
| 952 | } |
| 953 | if (error >= 14) |
| 954 | { |
| 955 | struct sk_buff *lb; |
| 956 | while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) |
| 957 | dev_kfree_skb_any(lb); |
| 958 | } |
| 959 | if (error >= 13) |
| 960 | { |
| 961 | struct sk_buff *hb; |
| 962 | while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) |
| 963 | dev_kfree_skb_any(hb); |
| 964 | } |
| 965 | if (error >= 12) |
| 966 | { |
| 967 | kfree(card->rsq.org); |
| 968 | } |
| 969 | if (error >= 11) |
| 970 | { |
| 971 | kfree(card->tsq.org); |
| 972 | } |
| 973 | if (error >= 10) |
| 974 | { |
| 975 | free_irq(card->pcidev->irq, card); |
| 976 | } |
| 977 | if (error >= 4) |
| 978 | { |
| 979 | iounmap(card->membase); |
| 980 | } |
| 981 | if (error >= 3) |
| 982 | { |
| 983 | pci_disable_device(card->pcidev); |
| 984 | kfree(card); |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | |
| 989 | |
| 990 | static scq_info *get_scq(int size, u32 scd) |
| 991 | { |
| 992 | scq_info *scq; |
| 993 | int i; |
| 994 | |
| 995 | if (size != VBR_SCQSIZE && size != CBR_SCQSIZE) |
| 996 | return (scq_info *) NULL; |
| 997 | |
| 998 | scq = (scq_info *) kmalloc(sizeof(scq_info), GFP_KERNEL); |
| 999 | if (scq == (scq_info *) NULL) |
| 1000 | return (scq_info *) NULL; |
| 1001 | scq->org = kmalloc(2 * size, GFP_KERNEL); |
| 1002 | if (scq->org == NULL) |
| 1003 | { |
| 1004 | kfree(scq); |
| 1005 | return (scq_info *) NULL; |
| 1006 | } |
| 1007 | scq->skb = (struct sk_buff **) kmalloc(sizeof(struct sk_buff *) * |
| 1008 | (size / NS_SCQE_SIZE), GFP_KERNEL); |
| 1009 | if (scq->skb == (struct sk_buff **) NULL) |
| 1010 | { |
| 1011 | kfree(scq->org); |
| 1012 | kfree(scq); |
| 1013 | return (scq_info *) NULL; |
| 1014 | } |
| 1015 | scq->num_entries = size / NS_SCQE_SIZE; |
| 1016 | scq->base = (ns_scqe *) ALIGN_ADDRESS(scq->org, size); |
| 1017 | scq->next = scq->base; |
| 1018 | scq->last = scq->base + (scq->num_entries - 1); |
| 1019 | scq->tail = scq->last; |
| 1020 | scq->scd = scd; |
| 1021 | scq->num_entries = size / NS_SCQE_SIZE; |
| 1022 | scq->tbd_count = 0; |
| 1023 | init_waitqueue_head(&scq->scqfull_waitq); |
| 1024 | scq->full = 0; |
| 1025 | spin_lock_init(&scq->lock); |
| 1026 | |
| 1027 | for (i = 0; i < scq->num_entries; i++) |
| 1028 | scq->skb[i] = NULL; |
| 1029 | |
| 1030 | return scq; |
| 1031 | } |
| 1032 | |
| 1033 | |
| 1034 | |
| 1035 | /* For variable rate SCQ vcc must be NULL */ |
| 1036 | static void free_scq(scq_info *scq, struct atm_vcc *vcc) |
| 1037 | { |
| 1038 | int i; |
| 1039 | |
| 1040 | if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) |
| 1041 | for (i = 0; i < scq->num_entries; i++) |
| 1042 | { |
| 1043 | if (scq->skb[i] != NULL) |
| 1044 | { |
| 1045 | vcc = ATM_SKB(scq->skb[i])->vcc; |
| 1046 | if (vcc->pop != NULL) |
| 1047 | vcc->pop(vcc, scq->skb[i]); |
| 1048 | else |
| 1049 | dev_kfree_skb_any(scq->skb[i]); |
| 1050 | } |
| 1051 | } |
| 1052 | else /* vcc must be != NULL */ |
| 1053 | { |
| 1054 | if (vcc == NULL) |
| 1055 | { |
| 1056 | printk("nicstar: free_scq() called with vcc == NULL for fixed rate scq."); |
| 1057 | for (i = 0; i < scq->num_entries; i++) |
| 1058 | dev_kfree_skb_any(scq->skb[i]); |
| 1059 | } |
| 1060 | else |
| 1061 | for (i = 0; i < scq->num_entries; i++) |
| 1062 | { |
| 1063 | if (scq->skb[i] != NULL) |
| 1064 | { |
| 1065 | if (vcc->pop != NULL) |
| 1066 | vcc->pop(vcc, scq->skb[i]); |
| 1067 | else |
| 1068 | dev_kfree_skb_any(scq->skb[i]); |
| 1069 | } |
| 1070 | } |
| 1071 | } |
| 1072 | kfree(scq->skb); |
| 1073 | kfree(scq->org); |
| 1074 | kfree(scq); |
| 1075 | } |
| 1076 | |
| 1077 | |
| 1078 | |
| 1079 | /* The handles passed must be pointers to the sk_buff containing the small |
| 1080 | or large buffer(s) cast to u32. */ |
| 1081 | static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, |
| 1082 | u32 handle2, u32 addr2) |
| 1083 | { |
| 1084 | u32 stat; |
| 1085 | unsigned long flags; |
| 1086 | |
| 1087 | |
| 1088 | #ifdef GENERAL_DEBUG |
| 1089 | if (!addr1) |
| 1090 | printk("nicstar%d: push_rxbufs called with addr1 = 0.\n", card->index); |
| 1091 | #endif /* GENERAL_DEBUG */ |
| 1092 | |
| 1093 | stat = readl(card->membase + STAT); |
| 1094 | card->sbfqc = ns_stat_sfbqc_get(stat); |
| 1095 | card->lbfqc = ns_stat_lfbqc_get(stat); |
| 1096 | if (type == BUF_SM) |
| 1097 | { |
| 1098 | if (!addr2) |
| 1099 | { |
| 1100 | if (card->sm_addr) |
| 1101 | { |
| 1102 | addr2 = card->sm_addr; |
| 1103 | handle2 = card->sm_handle; |
| 1104 | card->sm_addr = 0x00000000; |
| 1105 | card->sm_handle = 0x00000000; |
| 1106 | } |
| 1107 | else /* (!sm_addr) */ |
| 1108 | { |
| 1109 | card->sm_addr = addr1; |
| 1110 | card->sm_handle = handle1; |
| 1111 | } |
| 1112 | } |
| 1113 | } |
| 1114 | else /* type == BUF_LG */ |
| 1115 | { |
| 1116 | if (!addr2) |
| 1117 | { |
| 1118 | if (card->lg_addr) |
| 1119 | { |
| 1120 | addr2 = card->lg_addr; |
| 1121 | handle2 = card->lg_handle; |
| 1122 | card->lg_addr = 0x00000000; |
| 1123 | card->lg_handle = 0x00000000; |
| 1124 | } |
| 1125 | else /* (!lg_addr) */ |
| 1126 | { |
| 1127 | card->lg_addr = addr1; |
| 1128 | card->lg_handle = handle1; |
| 1129 | } |
| 1130 | } |
| 1131 | } |
| 1132 | |
| 1133 | if (addr2) |
| 1134 | { |
| 1135 | if (type == BUF_SM) |
| 1136 | { |
| 1137 | if (card->sbfqc >= card->sbnr.max) |
| 1138 | { |
| 1139 | skb_unlink((struct sk_buff *) handle1); |
| 1140 | dev_kfree_skb_any((struct sk_buff *) handle1); |
| 1141 | skb_unlink((struct sk_buff *) handle2); |
| 1142 | dev_kfree_skb_any((struct sk_buff *) handle2); |
| 1143 | return; |
| 1144 | } |
| 1145 | else |
| 1146 | card->sbfqc += 2; |
| 1147 | } |
| 1148 | else /* (type == BUF_LG) */ |
| 1149 | { |
| 1150 | if (card->lbfqc >= card->lbnr.max) |
| 1151 | { |
| 1152 | skb_unlink((struct sk_buff *) handle1); |
| 1153 | dev_kfree_skb_any((struct sk_buff *) handle1); |
| 1154 | skb_unlink((struct sk_buff *) handle2); |
| 1155 | dev_kfree_skb_any((struct sk_buff *) handle2); |
| 1156 | return; |
| 1157 | } |
| 1158 | else |
| 1159 | card->lbfqc += 2; |
| 1160 | } |
| 1161 | |
| 1162 | ns_grab_res_lock(card, flags); |
| 1163 | |
| 1164 | while (CMD_BUSY(card)); |
| 1165 | writel(addr2, card->membase + DR3); |
| 1166 | writel(handle2, card->membase + DR2); |
| 1167 | writel(addr1, card->membase + DR1); |
| 1168 | writel(handle1, card->membase + DR0); |
| 1169 | writel(NS_CMD_WRITE_FREEBUFQ | (u32) type, card->membase + CMD); |
| 1170 | |
| 1171 | spin_unlock_irqrestore(&card->res_lock, flags); |
| 1172 | |
| 1173 | XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n", card->index, |
| 1174 | (type == BUF_SM ? "small" : "large"), addr1, addr2); |
| 1175 | } |
| 1176 | |
| 1177 | if (!card->efbie && card->sbfqc >= card->sbnr.min && |
| 1178 | card->lbfqc >= card->lbnr.min) |
| 1179 | { |
| 1180 | card->efbie = 1; |
| 1181 | writel((readl(card->membase + CFG) | NS_CFG_EFBIE), card->membase + CFG); |
| 1182 | } |
| 1183 | |
| 1184 | return; |
| 1185 | } |
| 1186 | |
| 1187 | |
| 1188 | |
| 1189 | static irqreturn_t ns_irq_handler(int irq, void *dev_id, struct pt_regs *regs) |
| 1190 | { |
| 1191 | u32 stat_r; |
| 1192 | ns_dev *card; |
| 1193 | struct atm_dev *dev; |
| 1194 | unsigned long flags; |
| 1195 | |
| 1196 | card = (ns_dev *) dev_id; |
| 1197 | dev = card->atmdev; |
| 1198 | card->intcnt++; |
| 1199 | |
| 1200 | PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index); |
| 1201 | |
| 1202 | ns_grab_int_lock(card, flags); |
| 1203 | |
| 1204 | stat_r = readl(card->membase + STAT); |
| 1205 | |
| 1206 | /* Transmit Status Indicator has been written to T. S. Queue */ |
| 1207 | if (stat_r & NS_STAT_TSIF) |
| 1208 | { |
| 1209 | TXPRINTK("nicstar%d: TSI interrupt\n", card->index); |
| 1210 | process_tsq(card); |
| 1211 | writel(NS_STAT_TSIF, card->membase + STAT); |
| 1212 | } |
| 1213 | |
| 1214 | /* Incomplete CS-PDU has been transmitted */ |
| 1215 | if (stat_r & NS_STAT_TXICP) |
| 1216 | { |
| 1217 | writel(NS_STAT_TXICP, card->membase + STAT); |
| 1218 | TXPRINTK("nicstar%d: Incomplete CS-PDU transmitted.\n", |
| 1219 | card->index); |
| 1220 | } |
| 1221 | |
| 1222 | /* Transmit Status Queue 7/8 full */ |
| 1223 | if (stat_r & NS_STAT_TSQF) |
| 1224 | { |
| 1225 | writel(NS_STAT_TSQF, card->membase + STAT); |
| 1226 | PRINTK("nicstar%d: TSQ full.\n", card->index); |
| 1227 | process_tsq(card); |
| 1228 | } |
| 1229 | |
| 1230 | /* Timer overflow */ |
| 1231 | if (stat_r & NS_STAT_TMROF) |
| 1232 | { |
| 1233 | writel(NS_STAT_TMROF, card->membase + STAT); |
| 1234 | PRINTK("nicstar%d: Timer overflow.\n", card->index); |
| 1235 | } |
| 1236 | |
| 1237 | /* PHY device interrupt signal active */ |
| 1238 | if (stat_r & NS_STAT_PHYI) |
| 1239 | { |
| 1240 | writel(NS_STAT_PHYI, card->membase + STAT); |
| 1241 | PRINTK("nicstar%d: PHY interrupt.\n", card->index); |
| 1242 | if (dev->phy && dev->phy->interrupt) { |
| 1243 | dev->phy->interrupt(dev); |
| 1244 | } |
| 1245 | } |
| 1246 | |
| 1247 | /* Small Buffer Queue is full */ |
| 1248 | if (stat_r & NS_STAT_SFBQF) |
| 1249 | { |
| 1250 | writel(NS_STAT_SFBQF, card->membase + STAT); |
| 1251 | printk("nicstar%d: Small free buffer queue is full.\n", card->index); |
| 1252 | } |
| 1253 | |
| 1254 | /* Large Buffer Queue is full */ |
| 1255 | if (stat_r & NS_STAT_LFBQF) |
| 1256 | { |
| 1257 | writel(NS_STAT_LFBQF, card->membase + STAT); |
| 1258 | printk("nicstar%d: Large free buffer queue is full.\n", card->index); |
| 1259 | } |
| 1260 | |
| 1261 | /* Receive Status Queue is full */ |
| 1262 | if (stat_r & NS_STAT_RSQF) |
| 1263 | { |
| 1264 | writel(NS_STAT_RSQF, card->membase + STAT); |
| 1265 | printk("nicstar%d: RSQ full.\n", card->index); |
| 1266 | process_rsq(card); |
| 1267 | } |
| 1268 | |
| 1269 | /* Complete CS-PDU received */ |
| 1270 | if (stat_r & NS_STAT_EOPDU) |
| 1271 | { |
| 1272 | RXPRINTK("nicstar%d: End of CS-PDU received.\n", card->index); |
| 1273 | process_rsq(card); |
| 1274 | writel(NS_STAT_EOPDU, card->membase + STAT); |
| 1275 | } |
| 1276 | |
| 1277 | /* Raw cell received */ |
| 1278 | if (stat_r & NS_STAT_RAWCF) |
| 1279 | { |
| 1280 | writel(NS_STAT_RAWCF, card->membase + STAT); |
| 1281 | #ifndef RCQ_SUPPORT |
| 1282 | printk("nicstar%d: Raw cell received and no support yet...\n", |
| 1283 | card->index); |
| 1284 | #endif /* RCQ_SUPPORT */ |
| 1285 | /* NOTE: the following procedure may keep a raw cell pending until the |
| 1286 | next interrupt. As this preliminary support is only meant to |
| 1287 | avoid buffer leakage, this is not an issue. */ |
| 1288 | while (readl(card->membase + RAWCT) != card->rawch) |
| 1289 | { |
| 1290 | ns_rcqe *rawcell; |
| 1291 | |
| 1292 | rawcell = (ns_rcqe *) bus_to_virt(card->rawch); |
| 1293 | if (ns_rcqe_islast(rawcell)) |
| 1294 | { |
| 1295 | struct sk_buff *oldbuf; |
| 1296 | |
| 1297 | oldbuf = card->rcbuf; |
| 1298 | card->rcbuf = (struct sk_buff *) ns_rcqe_nextbufhandle(rawcell); |
| 1299 | card->rawch = (u32) virt_to_bus(card->rcbuf->data); |
| 1300 | recycle_rx_buf(card, oldbuf); |
| 1301 | } |
| 1302 | else |
| 1303 | card->rawch += NS_RCQE_SIZE; |
| 1304 | } |
| 1305 | } |
| 1306 | |
| 1307 | /* Small buffer queue is empty */ |
| 1308 | if (stat_r & NS_STAT_SFBQE) |
| 1309 | { |
| 1310 | int i; |
| 1311 | struct sk_buff *sb; |
| 1312 | |
| 1313 | writel(NS_STAT_SFBQE, card->membase + STAT); |
| 1314 | printk("nicstar%d: Small free buffer queue empty.\n", |
| 1315 | card->index); |
| 1316 | for (i = 0; i < card->sbnr.min; i++) |
| 1317 | { |
| 1318 | sb = dev_alloc_skb(NS_SMSKBSIZE); |
| 1319 | if (sb == NULL) |
| 1320 | { |
| 1321 | writel(readl(card->membase + CFG) & ~NS_CFG_EFBIE, card->membase + CFG); |
| 1322 | card->efbie = 0; |
| 1323 | break; |
| 1324 | } |
| 1325 | skb_queue_tail(&card->sbpool.queue, sb); |
| 1326 | skb_reserve(sb, NS_AAL0_HEADER); |
| 1327 | push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); |
| 1328 | } |
| 1329 | card->sbfqc = i; |
| 1330 | process_rsq(card); |
| 1331 | } |
| 1332 | |
| 1333 | /* Large buffer queue empty */ |
| 1334 | if (stat_r & NS_STAT_LFBQE) |
| 1335 | { |
| 1336 | int i; |
| 1337 | struct sk_buff *lb; |
| 1338 | |
| 1339 | writel(NS_STAT_LFBQE, card->membase + STAT); |
| 1340 | printk("nicstar%d: Large free buffer queue empty.\n", |
| 1341 | card->index); |
| 1342 | for (i = 0; i < card->lbnr.min; i++) |
| 1343 | { |
| 1344 | lb = dev_alloc_skb(NS_LGSKBSIZE); |
| 1345 | if (lb == NULL) |
| 1346 | { |
| 1347 | writel(readl(card->membase + CFG) & ~NS_CFG_EFBIE, card->membase + CFG); |
| 1348 | card->efbie = 0; |
| 1349 | break; |
| 1350 | } |
| 1351 | skb_queue_tail(&card->lbpool.queue, lb); |
| 1352 | skb_reserve(lb, NS_SMBUFSIZE); |
| 1353 | push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); |
| 1354 | } |
| 1355 | card->lbfqc = i; |
| 1356 | process_rsq(card); |
| 1357 | } |
| 1358 | |
| 1359 | /* Receive Status Queue is 7/8 full */ |
| 1360 | if (stat_r & NS_STAT_RSQAF) |
| 1361 | { |
| 1362 | writel(NS_STAT_RSQAF, card->membase + STAT); |
| 1363 | RXPRINTK("nicstar%d: RSQ almost full.\n", card->index); |
| 1364 | process_rsq(card); |
| 1365 | } |
| 1366 | |
| 1367 | spin_unlock_irqrestore(&card->int_lock, flags); |
| 1368 | PRINTK("nicstar%d: end of interrupt service\n", card->index); |
| 1369 | return IRQ_HANDLED; |
| 1370 | } |
| 1371 | |
| 1372 | |
| 1373 | |
| 1374 | static int ns_open(struct atm_vcc *vcc) |
| 1375 | { |
| 1376 | ns_dev *card; |
| 1377 | vc_map *vc; |
| 1378 | unsigned long tmpl, modl; |
| 1379 | int tcr, tcra; /* target cell rate, and absolute value */ |
| 1380 | int n = 0; /* Number of entries in the TST. Initialized to remove |
| 1381 | the compiler warning. */ |
| 1382 | u32 u32d[4]; |
| 1383 | int frscdi = 0; /* Index of the SCD. Initialized to remove the compiler |
| 1384 | warning. How I wish compilers were clever enough to |
| 1385 | tell which variables can truly be used |
| 1386 | uninitialized... */ |
| 1387 | int inuse; /* tx or rx vc already in use by another vcc */ |
| 1388 | short vpi = vcc->vpi; |
| 1389 | int vci = vcc->vci; |
| 1390 | |
| 1391 | card = (ns_dev *) vcc->dev->dev_data; |
| 1392 | PRINTK("nicstar%d: opening vpi.vci %d.%d \n", card->index, (int) vpi, vci); |
| 1393 | if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) |
| 1394 | { |
| 1395 | PRINTK("nicstar%d: unsupported AAL.\n", card->index); |
| 1396 | return -EINVAL; |
| 1397 | } |
| 1398 | |
| 1399 | vc = &(card->vcmap[vpi << card->vcibits | vci]); |
| 1400 | vcc->dev_data = vc; |
| 1401 | |
| 1402 | inuse = 0; |
| 1403 | if (vcc->qos.txtp.traffic_class != ATM_NONE && vc->tx) |
| 1404 | inuse = 1; |
| 1405 | if (vcc->qos.rxtp.traffic_class != ATM_NONE && vc->rx) |
| 1406 | inuse += 2; |
| 1407 | if (inuse) |
| 1408 | { |
| 1409 | printk("nicstar%d: %s vci already in use.\n", card->index, |
| 1410 | inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx"); |
| 1411 | return -EINVAL; |
| 1412 | } |
| 1413 | |
| 1414 | set_bit(ATM_VF_ADDR,&vcc->flags); |
| 1415 | |
| 1416 | /* NOTE: You are not allowed to modify an open connection's QOS. To change |
| 1417 | that, remove the ATM_VF_PARTIAL flag checking. There may be other changes |
| 1418 | needed to do that. */ |
| 1419 | if (!test_bit(ATM_VF_PARTIAL,&vcc->flags)) |
| 1420 | { |
| 1421 | scq_info *scq; |
| 1422 | |
| 1423 | set_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1424 | if (vcc->qos.txtp.traffic_class == ATM_CBR) |
| 1425 | { |
| 1426 | /* Check requested cell rate and availability of SCD */ |
| 1427 | if (vcc->qos.txtp.max_pcr == 0 && vcc->qos.txtp.pcr == 0 && |
| 1428 | vcc->qos.txtp.min_pcr == 0) |
| 1429 | { |
| 1430 | PRINTK("nicstar%d: trying to open a CBR vc with cell rate = 0 \n", |
| 1431 | card->index); |
| 1432 | clear_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1433 | clear_bit(ATM_VF_ADDR,&vcc->flags); |
| 1434 | return -EINVAL; |
| 1435 | } |
| 1436 | |
| 1437 | tcr = atm_pcr_goal(&(vcc->qos.txtp)); |
| 1438 | tcra = tcr >= 0 ? tcr : -tcr; |
| 1439 | |
| 1440 | PRINTK("nicstar%d: target cell rate = %d.\n", card->index, |
| 1441 | vcc->qos.txtp.max_pcr); |
| 1442 | |
| 1443 | tmpl = (unsigned long)tcra * (unsigned long)NS_TST_NUM_ENTRIES; |
| 1444 | modl = tmpl % card->max_pcr; |
| 1445 | |
| 1446 | n = (int)(tmpl / card->max_pcr); |
| 1447 | if (tcr > 0) |
| 1448 | { |
| 1449 | if (modl > 0) n++; |
| 1450 | } |
| 1451 | else if (tcr == 0) |
| 1452 | { |
| 1453 | if ((n = (card->tst_free_entries - NS_TST_RESERVED)) <= 0) |
| 1454 | { |
| 1455 | PRINTK("nicstar%d: no CBR bandwidth free.\n", card->index); |
| 1456 | clear_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1457 | clear_bit(ATM_VF_ADDR,&vcc->flags); |
| 1458 | return -EINVAL; |
| 1459 | } |
| 1460 | } |
| 1461 | |
| 1462 | if (n == 0) |
| 1463 | { |
| 1464 | printk("nicstar%d: selected bandwidth < granularity.\n", card->index); |
| 1465 | clear_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1466 | clear_bit(ATM_VF_ADDR,&vcc->flags); |
| 1467 | return -EINVAL; |
| 1468 | } |
| 1469 | |
| 1470 | if (n > (card->tst_free_entries - NS_TST_RESERVED)) |
| 1471 | { |
| 1472 | PRINTK("nicstar%d: not enough free CBR bandwidth.\n", card->index); |
| 1473 | clear_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1474 | clear_bit(ATM_VF_ADDR,&vcc->flags); |
| 1475 | return -EINVAL; |
| 1476 | } |
| 1477 | else |
| 1478 | card->tst_free_entries -= n; |
| 1479 | |
| 1480 | XPRINTK("nicstar%d: writing %d tst entries.\n", card->index, n); |
| 1481 | for (frscdi = 0; frscdi < NS_FRSCD_NUM; frscdi++) |
| 1482 | { |
| 1483 | if (card->scd2vc[frscdi] == NULL) |
| 1484 | { |
| 1485 | card->scd2vc[frscdi] = vc; |
| 1486 | break; |
| 1487 | } |
| 1488 | } |
| 1489 | if (frscdi == NS_FRSCD_NUM) |
| 1490 | { |
| 1491 | PRINTK("nicstar%d: no SCD available for CBR channel.\n", card->index); |
| 1492 | card->tst_free_entries += n; |
| 1493 | clear_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1494 | clear_bit(ATM_VF_ADDR,&vcc->flags); |
| 1495 | return -EBUSY; |
| 1496 | } |
| 1497 | |
| 1498 | vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE; |
| 1499 | |
| 1500 | scq = get_scq(CBR_SCQSIZE, vc->cbr_scd); |
| 1501 | if (scq == (scq_info *) NULL) |
| 1502 | { |
| 1503 | PRINTK("nicstar%d: can't get fixed rate SCQ.\n", card->index); |
| 1504 | card->scd2vc[frscdi] = NULL; |
| 1505 | card->tst_free_entries += n; |
| 1506 | clear_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1507 | clear_bit(ATM_VF_ADDR,&vcc->flags); |
| 1508 | return -ENOMEM; |
| 1509 | } |
| 1510 | vc->scq = scq; |
| 1511 | u32d[0] = (u32) virt_to_bus(scq->base); |
| 1512 | u32d[1] = (u32) 0x00000000; |
| 1513 | u32d[2] = (u32) 0xffffffff; |
| 1514 | u32d[3] = (u32) 0x00000000; |
| 1515 | ns_write_sram(card, vc->cbr_scd, u32d, 4); |
| 1516 | |
| 1517 | fill_tst(card, n, vc); |
| 1518 | } |
| 1519 | else if (vcc->qos.txtp.traffic_class == ATM_UBR) |
| 1520 | { |
| 1521 | vc->cbr_scd = 0x00000000; |
| 1522 | vc->scq = card->scq0; |
| 1523 | } |
| 1524 | |
| 1525 | if (vcc->qos.txtp.traffic_class != ATM_NONE) |
| 1526 | { |
| 1527 | vc->tx = 1; |
| 1528 | vc->tx_vcc = vcc; |
| 1529 | vc->tbd_count = 0; |
| 1530 | } |
| 1531 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) |
| 1532 | { |
| 1533 | u32 status; |
| 1534 | |
| 1535 | vc->rx = 1; |
| 1536 | vc->rx_vcc = vcc; |
| 1537 | vc->rx_iov = NULL; |
| 1538 | |
| 1539 | /* Open the connection in hardware */ |
| 1540 | if (vcc->qos.aal == ATM_AAL5) |
| 1541 | status = NS_RCTE_AAL5 | NS_RCTE_CONNECTOPEN; |
| 1542 | else /* vcc->qos.aal == ATM_AAL0 */ |
| 1543 | status = NS_RCTE_AAL0 | NS_RCTE_CONNECTOPEN; |
| 1544 | #ifdef RCQ_SUPPORT |
| 1545 | status |= NS_RCTE_RAWCELLINTEN; |
| 1546 | #endif /* RCQ_SUPPORT */ |
| 1547 | ns_write_sram(card, NS_RCT + (vpi << card->vcibits | vci) * |
| 1548 | NS_RCT_ENTRY_SIZE, &status, 1); |
| 1549 | } |
| 1550 | |
| 1551 | } |
| 1552 | |
| 1553 | set_bit(ATM_VF_READY,&vcc->flags); |
| 1554 | return 0; |
| 1555 | } |
| 1556 | |
| 1557 | |
| 1558 | |
| 1559 | static void ns_close(struct atm_vcc *vcc) |
| 1560 | { |
| 1561 | vc_map *vc; |
| 1562 | ns_dev *card; |
| 1563 | u32 data; |
| 1564 | int i; |
| 1565 | |
| 1566 | vc = vcc->dev_data; |
| 1567 | card = vcc->dev->dev_data; |
| 1568 | PRINTK("nicstar%d: closing vpi.vci %d.%d \n", card->index, |
| 1569 | (int) vcc->vpi, vcc->vci); |
| 1570 | |
| 1571 | clear_bit(ATM_VF_READY,&vcc->flags); |
| 1572 | |
| 1573 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) |
| 1574 | { |
| 1575 | u32 addr; |
| 1576 | unsigned long flags; |
| 1577 | |
| 1578 | addr = NS_RCT + (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE; |
| 1579 | ns_grab_res_lock(card, flags); |
| 1580 | while(CMD_BUSY(card)); |
| 1581 | writel(NS_CMD_CLOSE_CONNECTION | addr << 2, card->membase + CMD); |
| 1582 | spin_unlock_irqrestore(&card->res_lock, flags); |
| 1583 | |
| 1584 | vc->rx = 0; |
| 1585 | if (vc->rx_iov != NULL) |
| 1586 | { |
| 1587 | struct sk_buff *iovb; |
| 1588 | u32 stat; |
| 1589 | |
| 1590 | stat = readl(card->membase + STAT); |
| 1591 | card->sbfqc = ns_stat_sfbqc_get(stat); |
| 1592 | card->lbfqc = ns_stat_lfbqc_get(stat); |
| 1593 | |
| 1594 | PRINTK("nicstar%d: closing a VC with pending rx buffers.\n", |
| 1595 | card->index); |
| 1596 | iovb = vc->rx_iov; |
| 1597 | recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, |
| 1598 | NS_SKB(iovb)->iovcnt); |
| 1599 | NS_SKB(iovb)->iovcnt = 0; |
| 1600 | NS_SKB(iovb)->vcc = NULL; |
| 1601 | ns_grab_int_lock(card, flags); |
| 1602 | recycle_iov_buf(card, iovb); |
| 1603 | spin_unlock_irqrestore(&card->int_lock, flags); |
| 1604 | vc->rx_iov = NULL; |
| 1605 | } |
| 1606 | } |
| 1607 | |
| 1608 | if (vcc->qos.txtp.traffic_class != ATM_NONE) |
| 1609 | { |
| 1610 | vc->tx = 0; |
| 1611 | } |
| 1612 | |
| 1613 | if (vcc->qos.txtp.traffic_class == ATM_CBR) |
| 1614 | { |
| 1615 | unsigned long flags; |
| 1616 | ns_scqe *scqep; |
| 1617 | scq_info *scq; |
| 1618 | |
| 1619 | scq = vc->scq; |
| 1620 | |
| 1621 | for (;;) |
| 1622 | { |
| 1623 | ns_grab_scq_lock(card, scq, flags); |
| 1624 | scqep = scq->next; |
| 1625 | if (scqep == scq->base) |
| 1626 | scqep = scq->last; |
| 1627 | else |
| 1628 | scqep--; |
| 1629 | if (scqep == scq->tail) |
| 1630 | { |
| 1631 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1632 | break; |
| 1633 | } |
| 1634 | /* If the last entry is not a TSR, place one in the SCQ in order to |
| 1635 | be able to completely drain it and then close. */ |
| 1636 | if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next) |
| 1637 | { |
| 1638 | ns_scqe tsr; |
| 1639 | u32 scdi, scqi; |
| 1640 | u32 data; |
| 1641 | int index; |
| 1642 | |
| 1643 | tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); |
| 1644 | scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; |
| 1645 | scqi = scq->next - scq->base; |
| 1646 | tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); |
| 1647 | tsr.word_3 = 0x00000000; |
| 1648 | tsr.word_4 = 0x00000000; |
| 1649 | *scq->next = tsr; |
| 1650 | index = (int) scqi; |
| 1651 | scq->skb[index] = NULL; |
| 1652 | if (scq->next == scq->last) |
| 1653 | scq->next = scq->base; |
| 1654 | else |
| 1655 | scq->next++; |
| 1656 | data = (u32) virt_to_bus(scq->next); |
| 1657 | ns_write_sram(card, scq->scd, &data, 1); |
| 1658 | } |
| 1659 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1660 | schedule(); |
| 1661 | } |
| 1662 | |
| 1663 | /* Free all TST entries */ |
| 1664 | data = NS_TST_OPCODE_VARIABLE; |
| 1665 | for (i = 0; i < NS_TST_NUM_ENTRIES; i++) |
| 1666 | { |
| 1667 | if (card->tste2vc[i] == vc) |
| 1668 | { |
| 1669 | ns_write_sram(card, card->tst_addr + i, &data, 1); |
| 1670 | card->tste2vc[i] = NULL; |
| 1671 | card->tst_free_entries++; |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | card->scd2vc[(vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE] = NULL; |
| 1676 | free_scq(vc->scq, vcc); |
| 1677 | } |
| 1678 | |
| 1679 | /* remove all references to vcc before deleting it */ |
| 1680 | if (vcc->qos.txtp.traffic_class != ATM_NONE) |
| 1681 | { |
| 1682 | unsigned long flags; |
| 1683 | scq_info *scq = card->scq0; |
| 1684 | |
| 1685 | ns_grab_scq_lock(card, scq, flags); |
| 1686 | |
| 1687 | for(i = 0; i < scq->num_entries; i++) { |
| 1688 | if(scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) { |
| 1689 | ATM_SKB(scq->skb[i])->vcc = NULL; |
| 1690 | atm_return(vcc, scq->skb[i]->truesize); |
| 1691 | PRINTK("nicstar: deleted pending vcc mapping\n"); |
| 1692 | } |
| 1693 | } |
| 1694 | |
| 1695 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1696 | } |
| 1697 | |
| 1698 | vcc->dev_data = NULL; |
| 1699 | clear_bit(ATM_VF_PARTIAL,&vcc->flags); |
| 1700 | clear_bit(ATM_VF_ADDR,&vcc->flags); |
| 1701 | |
| 1702 | #ifdef RX_DEBUG |
| 1703 | { |
| 1704 | u32 stat, cfg; |
| 1705 | stat = readl(card->membase + STAT); |
| 1706 | cfg = readl(card->membase + CFG); |
| 1707 | printk("STAT = 0x%08X CFG = 0x%08X \n", stat, cfg); |
| 1708 | printk("TSQ: base = 0x%08X next = 0x%08X last = 0x%08X TSQT = 0x%08X \n", |
| 1709 | (u32) card->tsq.base, (u32) card->tsq.next,(u32) card->tsq.last, |
| 1710 | readl(card->membase + TSQT)); |
| 1711 | printk("RSQ: base = 0x%08X next = 0x%08X last = 0x%08X RSQT = 0x%08X \n", |
| 1712 | (u32) card->rsq.base, (u32) card->rsq.next,(u32) card->rsq.last, |
| 1713 | readl(card->membase + RSQT)); |
| 1714 | printk("Empty free buffer queue interrupt %s \n", |
| 1715 | card->efbie ? "enabled" : "disabled"); |
| 1716 | printk("SBCNT = %d count = %d LBCNT = %d count = %d \n", |
| 1717 | ns_stat_sfbqc_get(stat), card->sbpool.count, |
| 1718 | ns_stat_lfbqc_get(stat), card->lbpool.count); |
| 1719 | printk("hbpool.count = %d iovpool.count = %d \n", |
| 1720 | card->hbpool.count, card->iovpool.count); |
| 1721 | } |
| 1722 | #endif /* RX_DEBUG */ |
| 1723 | } |
| 1724 | |
| 1725 | |
| 1726 | |
| 1727 | static void fill_tst(ns_dev *card, int n, vc_map *vc) |
| 1728 | { |
| 1729 | u32 new_tst; |
| 1730 | unsigned long cl; |
| 1731 | int e, r; |
| 1732 | u32 data; |
| 1733 | |
| 1734 | /* It would be very complicated to keep the two TSTs synchronized while |
| 1735 | assuring that writes are only made to the inactive TST. So, for now I |
| 1736 | will use only one TST. If problems occur, I will change this again */ |
| 1737 | |
| 1738 | new_tst = card->tst_addr; |
| 1739 | |
| 1740 | /* Fill procedure */ |
| 1741 | |
| 1742 | for (e = 0; e < NS_TST_NUM_ENTRIES; e++) |
| 1743 | { |
| 1744 | if (card->tste2vc[e] == NULL) |
| 1745 | break; |
| 1746 | } |
| 1747 | if (e == NS_TST_NUM_ENTRIES) { |
| 1748 | printk("nicstar%d: No free TST entries found. \n", card->index); |
| 1749 | return; |
| 1750 | } |
| 1751 | |
| 1752 | r = n; |
| 1753 | cl = NS_TST_NUM_ENTRIES; |
| 1754 | data = ns_tste_make(NS_TST_OPCODE_FIXED, vc->cbr_scd); |
| 1755 | |
| 1756 | while (r > 0) |
| 1757 | { |
| 1758 | if (cl >= NS_TST_NUM_ENTRIES && card->tste2vc[e] == NULL) |
| 1759 | { |
| 1760 | card->tste2vc[e] = vc; |
| 1761 | ns_write_sram(card, new_tst + e, &data, 1); |
| 1762 | cl -= NS_TST_NUM_ENTRIES; |
| 1763 | r--; |
| 1764 | } |
| 1765 | |
| 1766 | if (++e == NS_TST_NUM_ENTRIES) { |
| 1767 | e = 0; |
| 1768 | } |
| 1769 | cl += n; |
| 1770 | } |
| 1771 | |
| 1772 | /* End of fill procedure */ |
| 1773 | |
| 1774 | data = ns_tste_make(NS_TST_OPCODE_END, new_tst); |
| 1775 | ns_write_sram(card, new_tst + NS_TST_NUM_ENTRIES, &data, 1); |
| 1776 | ns_write_sram(card, card->tst_addr + NS_TST_NUM_ENTRIES, &data, 1); |
| 1777 | card->tst_addr = new_tst; |
| 1778 | } |
| 1779 | |
| 1780 | |
| 1781 | |
| 1782 | static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) |
| 1783 | { |
| 1784 | ns_dev *card; |
| 1785 | vc_map *vc; |
| 1786 | scq_info *scq; |
| 1787 | unsigned long buflen; |
| 1788 | ns_scqe scqe; |
| 1789 | u32 flags; /* TBD flags, not CPU flags */ |
| 1790 | |
| 1791 | card = vcc->dev->dev_data; |
| 1792 | TXPRINTK("nicstar%d: ns_send() called.\n", card->index); |
| 1793 | if ((vc = (vc_map *) vcc->dev_data) == NULL) |
| 1794 | { |
| 1795 | printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", card->index); |
| 1796 | atomic_inc(&vcc->stats->tx_err); |
| 1797 | dev_kfree_skb_any(skb); |
| 1798 | return -EINVAL; |
| 1799 | } |
| 1800 | |
| 1801 | if (!vc->tx) |
| 1802 | { |
| 1803 | printk("nicstar%d: Trying to transmit on a non-tx VC.\n", card->index); |
| 1804 | atomic_inc(&vcc->stats->tx_err); |
| 1805 | dev_kfree_skb_any(skb); |
| 1806 | return -EINVAL; |
| 1807 | } |
| 1808 | |
| 1809 | if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) |
| 1810 | { |
| 1811 | printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", card->index); |
| 1812 | atomic_inc(&vcc->stats->tx_err); |
| 1813 | dev_kfree_skb_any(skb); |
| 1814 | return -EINVAL; |
| 1815 | } |
| 1816 | |
| 1817 | if (skb_shinfo(skb)->nr_frags != 0) |
| 1818 | { |
| 1819 | printk("nicstar%d: No scatter-gather yet.\n", card->index); |
| 1820 | atomic_inc(&vcc->stats->tx_err); |
| 1821 | dev_kfree_skb_any(skb); |
| 1822 | return -EINVAL; |
| 1823 | } |
| 1824 | |
| 1825 | ATM_SKB(skb)->vcc = vcc; |
| 1826 | |
| 1827 | if (vcc->qos.aal == ATM_AAL5) |
| 1828 | { |
| 1829 | buflen = (skb->len + 47 + 8) / 48 * 48; /* Multiple of 48 */ |
| 1830 | flags = NS_TBD_AAL5; |
| 1831 | scqe.word_2 = cpu_to_le32((u32) virt_to_bus(skb->data)); |
| 1832 | scqe.word_3 = cpu_to_le32((u32) skb->len); |
| 1833 | scqe.word_4 = ns_tbd_mkword_4(0, (u32) vcc->vpi, (u32) vcc->vci, 0, |
| 1834 | ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ? 1 : 0); |
| 1835 | flags |= NS_TBD_EOPDU; |
| 1836 | } |
| 1837 | else /* (vcc->qos.aal == ATM_AAL0) */ |
| 1838 | { |
| 1839 | buflen = ATM_CELL_PAYLOAD; /* i.e., 48 bytes */ |
| 1840 | flags = NS_TBD_AAL0; |
| 1841 | scqe.word_2 = cpu_to_le32((u32) virt_to_bus(skb->data) + NS_AAL0_HEADER); |
| 1842 | scqe.word_3 = cpu_to_le32(0x00000000); |
| 1843 | if (*skb->data & 0x02) /* Payload type 1 - end of pdu */ |
| 1844 | flags |= NS_TBD_EOPDU; |
| 1845 | scqe.word_4 = cpu_to_le32(*((u32 *) skb->data) & ~NS_TBD_VC_MASK); |
| 1846 | /* Force the VPI/VCI to be the same as in VCC struct */ |
| 1847 | scqe.word_4 |= cpu_to_le32((((u32) vcc->vpi) << NS_TBD_VPI_SHIFT | |
| 1848 | ((u32) vcc->vci) << NS_TBD_VCI_SHIFT) & |
| 1849 | NS_TBD_VC_MASK); |
| 1850 | } |
| 1851 | |
| 1852 | if (vcc->qos.txtp.traffic_class == ATM_CBR) |
| 1853 | { |
| 1854 | scqe.word_1 = ns_tbd_mkword_1_novbr(flags, (u32) buflen); |
| 1855 | scq = ((vc_map *) vcc->dev_data)->scq; |
| 1856 | } |
| 1857 | else |
| 1858 | { |
| 1859 | scqe.word_1 = ns_tbd_mkword_1(flags, (u32) 1, (u32) 1, (u32) buflen); |
| 1860 | scq = card->scq0; |
| 1861 | } |
| 1862 | |
| 1863 | if (push_scqe(card, vc, scq, &scqe, skb) != 0) |
| 1864 | { |
| 1865 | atomic_inc(&vcc->stats->tx_err); |
| 1866 | dev_kfree_skb_any(skb); |
| 1867 | return -EIO; |
| 1868 | } |
| 1869 | atomic_inc(&vcc->stats->tx); |
| 1870 | |
| 1871 | return 0; |
| 1872 | } |
| 1873 | |
| 1874 | |
| 1875 | |
| 1876 | static int push_scqe(ns_dev *card, vc_map *vc, scq_info *scq, ns_scqe *tbd, |
| 1877 | struct sk_buff *skb) |
| 1878 | { |
| 1879 | unsigned long flags; |
| 1880 | ns_scqe tsr; |
| 1881 | u32 scdi, scqi; |
| 1882 | int scq_is_vbr; |
| 1883 | u32 data; |
| 1884 | int index; |
| 1885 | |
| 1886 | ns_grab_scq_lock(card, scq, flags); |
| 1887 | while (scq->tail == scq->next) |
| 1888 | { |
| 1889 | if (in_interrupt()) { |
| 1890 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1891 | printk("nicstar%d: Error pushing TBD.\n", card->index); |
| 1892 | return 1; |
| 1893 | } |
| 1894 | |
| 1895 | scq->full = 1; |
| 1896 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1897 | interruptible_sleep_on_timeout(&scq->scqfull_waitq, SCQFULL_TIMEOUT); |
| 1898 | ns_grab_scq_lock(card, scq, flags); |
| 1899 | |
| 1900 | if (scq->full) { |
| 1901 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1902 | printk("nicstar%d: Timeout pushing TBD.\n", card->index); |
| 1903 | return 1; |
| 1904 | } |
| 1905 | } |
| 1906 | *scq->next = *tbd; |
| 1907 | index = (int) (scq->next - scq->base); |
| 1908 | scq->skb[index] = skb; |
| 1909 | XPRINTK("nicstar%d: sending skb at 0x%x (pos %d).\n", |
| 1910 | card->index, (u32) skb, index); |
| 1911 | XPRINTK("nicstar%d: TBD written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%x.\n", |
| 1912 | card->index, le32_to_cpu(tbd->word_1), le32_to_cpu(tbd->word_2), |
| 1913 | le32_to_cpu(tbd->word_3), le32_to_cpu(tbd->word_4), |
| 1914 | (u32) scq->next); |
| 1915 | if (scq->next == scq->last) |
| 1916 | scq->next = scq->base; |
| 1917 | else |
| 1918 | scq->next++; |
| 1919 | |
| 1920 | vc->tbd_count++; |
| 1921 | if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) |
| 1922 | { |
| 1923 | scq->tbd_count++; |
| 1924 | scq_is_vbr = 1; |
| 1925 | } |
| 1926 | else |
| 1927 | scq_is_vbr = 0; |
| 1928 | |
| 1929 | if (vc->tbd_count >= MAX_TBD_PER_VC || scq->tbd_count >= MAX_TBD_PER_SCQ) |
| 1930 | { |
| 1931 | int has_run = 0; |
| 1932 | |
| 1933 | while (scq->tail == scq->next) |
| 1934 | { |
| 1935 | if (in_interrupt()) { |
| 1936 | data = (u32) virt_to_bus(scq->next); |
| 1937 | ns_write_sram(card, scq->scd, &data, 1); |
| 1938 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1939 | printk("nicstar%d: Error pushing TSR.\n", card->index); |
| 1940 | return 0; |
| 1941 | } |
| 1942 | |
| 1943 | scq->full = 1; |
| 1944 | if (has_run++) break; |
| 1945 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1946 | interruptible_sleep_on_timeout(&scq->scqfull_waitq, SCQFULL_TIMEOUT); |
| 1947 | ns_grab_scq_lock(card, scq, flags); |
| 1948 | } |
| 1949 | |
| 1950 | if (!scq->full) |
| 1951 | { |
| 1952 | tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); |
| 1953 | if (scq_is_vbr) |
| 1954 | scdi = NS_TSR_SCDISVBR; |
| 1955 | else |
| 1956 | scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; |
| 1957 | scqi = scq->next - scq->base; |
| 1958 | tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); |
| 1959 | tsr.word_3 = 0x00000000; |
| 1960 | tsr.word_4 = 0x00000000; |
| 1961 | |
| 1962 | *scq->next = tsr; |
| 1963 | index = (int) scqi; |
| 1964 | scq->skb[index] = NULL; |
| 1965 | XPRINTK("nicstar%d: TSR written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%x.\n", |
| 1966 | card->index, le32_to_cpu(tsr.word_1), le32_to_cpu(tsr.word_2), |
| 1967 | le32_to_cpu(tsr.word_3), le32_to_cpu(tsr.word_4), |
| 1968 | (u32) scq->next); |
| 1969 | if (scq->next == scq->last) |
| 1970 | scq->next = scq->base; |
| 1971 | else |
| 1972 | scq->next++; |
| 1973 | vc->tbd_count = 0; |
| 1974 | scq->tbd_count = 0; |
| 1975 | } |
| 1976 | else |
| 1977 | PRINTK("nicstar%d: Timeout pushing TSR.\n", card->index); |
| 1978 | } |
| 1979 | data = (u32) virt_to_bus(scq->next); |
| 1980 | ns_write_sram(card, scq->scd, &data, 1); |
| 1981 | |
| 1982 | spin_unlock_irqrestore(&scq->lock, flags); |
| 1983 | |
| 1984 | return 0; |
| 1985 | } |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | static void process_tsq(ns_dev *card) |
| 1990 | { |
| 1991 | u32 scdi; |
| 1992 | scq_info *scq; |
| 1993 | ns_tsi *previous = NULL, *one_ahead, *two_ahead; |
| 1994 | int serviced_entries; /* flag indicating at least on entry was serviced */ |
| 1995 | |
| 1996 | serviced_entries = 0; |
| 1997 | |
| 1998 | if (card->tsq.next == card->tsq.last) |
| 1999 | one_ahead = card->tsq.base; |
| 2000 | else |
| 2001 | one_ahead = card->tsq.next + 1; |
| 2002 | |
| 2003 | if (one_ahead == card->tsq.last) |
| 2004 | two_ahead = card->tsq.base; |
| 2005 | else |
| 2006 | two_ahead = one_ahead + 1; |
| 2007 | |
| 2008 | while (!ns_tsi_isempty(card->tsq.next) || !ns_tsi_isempty(one_ahead) || |
| 2009 | !ns_tsi_isempty(two_ahead)) |
| 2010 | /* At most two empty, as stated in the 77201 errata */ |
| 2011 | { |
| 2012 | serviced_entries = 1; |
| 2013 | |
| 2014 | /* Skip the one or two possible empty entries */ |
| 2015 | while (ns_tsi_isempty(card->tsq.next)) { |
| 2016 | if (card->tsq.next == card->tsq.last) |
| 2017 | card->tsq.next = card->tsq.base; |
| 2018 | else |
| 2019 | card->tsq.next++; |
| 2020 | } |
| 2021 | |
| 2022 | if (!ns_tsi_tmrof(card->tsq.next)) |
| 2023 | { |
| 2024 | scdi = ns_tsi_getscdindex(card->tsq.next); |
| 2025 | if (scdi == NS_TSI_SCDISVBR) |
| 2026 | scq = card->scq0; |
| 2027 | else |
| 2028 | { |
| 2029 | if (card->scd2vc[scdi] == NULL) |
| 2030 | { |
| 2031 | printk("nicstar%d: could not find VC from SCD index.\n", |
| 2032 | card->index); |
| 2033 | ns_tsi_init(card->tsq.next); |
| 2034 | return; |
| 2035 | } |
| 2036 | scq = card->scd2vc[scdi]->scq; |
| 2037 | } |
| 2038 | drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next)); |
| 2039 | scq->full = 0; |
| 2040 | wake_up_interruptible(&(scq->scqfull_waitq)); |
| 2041 | } |
| 2042 | |
| 2043 | ns_tsi_init(card->tsq.next); |
| 2044 | previous = card->tsq.next; |
| 2045 | if (card->tsq.next == card->tsq.last) |
| 2046 | card->tsq.next = card->tsq.base; |
| 2047 | else |
| 2048 | card->tsq.next++; |
| 2049 | |
| 2050 | if (card->tsq.next == card->tsq.last) |
| 2051 | one_ahead = card->tsq.base; |
| 2052 | else |
| 2053 | one_ahead = card->tsq.next + 1; |
| 2054 | |
| 2055 | if (one_ahead == card->tsq.last) |
| 2056 | two_ahead = card->tsq.base; |
| 2057 | else |
| 2058 | two_ahead = one_ahead + 1; |
| 2059 | } |
| 2060 | |
| 2061 | if (serviced_entries) { |
| 2062 | writel((((u32) previous) - ((u32) card->tsq.base)), |
| 2063 | card->membase + TSQH); |
| 2064 | } |
| 2065 | } |
| 2066 | |
| 2067 | |
| 2068 | |
| 2069 | static void drain_scq(ns_dev *card, scq_info *scq, int pos) |
| 2070 | { |
| 2071 | struct atm_vcc *vcc; |
| 2072 | struct sk_buff *skb; |
| 2073 | int i; |
| 2074 | unsigned long flags; |
| 2075 | |
| 2076 | XPRINTK("nicstar%d: drain_scq() called, scq at 0x%x, pos %d.\n", |
| 2077 | card->index, (u32) scq, pos); |
| 2078 | if (pos >= scq->num_entries) |
| 2079 | { |
| 2080 | printk("nicstar%d: Bad index on drain_scq().\n", card->index); |
| 2081 | return; |
| 2082 | } |
| 2083 | |
| 2084 | ns_grab_scq_lock(card, scq, flags); |
| 2085 | i = (int) (scq->tail - scq->base); |
| 2086 | if (++i == scq->num_entries) |
| 2087 | i = 0; |
| 2088 | while (i != pos) |
| 2089 | { |
| 2090 | skb = scq->skb[i]; |
| 2091 | XPRINTK("nicstar%d: freeing skb at 0x%x (index %d).\n", |
| 2092 | card->index, (u32) skb, i); |
| 2093 | if (skb != NULL) |
| 2094 | { |
| 2095 | vcc = ATM_SKB(skb)->vcc; |
| 2096 | if (vcc && vcc->pop != NULL) { |
| 2097 | vcc->pop(vcc, skb); |
| 2098 | } else { |
| 2099 | dev_kfree_skb_irq(skb); |
| 2100 | } |
| 2101 | scq->skb[i] = NULL; |
| 2102 | } |
| 2103 | if (++i == scq->num_entries) |
| 2104 | i = 0; |
| 2105 | } |
| 2106 | scq->tail = scq->base + pos; |
| 2107 | spin_unlock_irqrestore(&scq->lock, flags); |
| 2108 | } |
| 2109 | |
| 2110 | |
| 2111 | |
| 2112 | static void process_rsq(ns_dev *card) |
| 2113 | { |
| 2114 | ns_rsqe *previous; |
| 2115 | |
| 2116 | if (!ns_rsqe_valid(card->rsq.next)) |
| 2117 | return; |
| 2118 | while (ns_rsqe_valid(card->rsq.next)) |
| 2119 | { |
| 2120 | dequeue_rx(card, card->rsq.next); |
| 2121 | ns_rsqe_init(card->rsq.next); |
| 2122 | previous = card->rsq.next; |
| 2123 | if (card->rsq.next == card->rsq.last) |
| 2124 | card->rsq.next = card->rsq.base; |
| 2125 | else |
| 2126 | card->rsq.next++; |
| 2127 | } |
| 2128 | writel((((u32) previous) - ((u32) card->rsq.base)), |
| 2129 | card->membase + RSQH); |
| 2130 | } |
| 2131 | |
| 2132 | |
| 2133 | |
| 2134 | static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) |
| 2135 | { |
| 2136 | u32 vpi, vci; |
| 2137 | vc_map *vc; |
| 2138 | struct sk_buff *iovb; |
| 2139 | struct iovec *iov; |
| 2140 | struct atm_vcc *vcc; |
| 2141 | struct sk_buff *skb; |
| 2142 | unsigned short aal5_len; |
| 2143 | int len; |
| 2144 | u32 stat; |
| 2145 | |
| 2146 | stat = readl(card->membase + STAT); |
| 2147 | card->sbfqc = ns_stat_sfbqc_get(stat); |
| 2148 | card->lbfqc = ns_stat_lfbqc_get(stat); |
| 2149 | |
| 2150 | skb = (struct sk_buff *) le32_to_cpu(rsqe->buffer_handle); |
| 2151 | vpi = ns_rsqe_vpi(rsqe); |
| 2152 | vci = ns_rsqe_vci(rsqe); |
| 2153 | if (vpi >= 1UL << card->vpibits || vci >= 1UL << card->vcibits) |
| 2154 | { |
| 2155 | printk("nicstar%d: SDU received for out-of-range vc %d.%d.\n", |
| 2156 | card->index, vpi, vci); |
| 2157 | recycle_rx_buf(card, skb); |
| 2158 | return; |
| 2159 | } |
| 2160 | |
| 2161 | vc = &(card->vcmap[vpi << card->vcibits | vci]); |
| 2162 | if (!vc->rx) |
| 2163 | { |
| 2164 | RXPRINTK("nicstar%d: SDU received on non-rx vc %d.%d.\n", |
| 2165 | card->index, vpi, vci); |
| 2166 | recycle_rx_buf(card, skb); |
| 2167 | return; |
| 2168 | } |
| 2169 | |
| 2170 | vcc = vc->rx_vcc; |
| 2171 | |
| 2172 | if (vcc->qos.aal == ATM_AAL0) |
| 2173 | { |
| 2174 | struct sk_buff *sb; |
| 2175 | unsigned char *cell; |
| 2176 | int i; |
| 2177 | |
| 2178 | cell = skb->data; |
| 2179 | for (i = ns_rsqe_cellcount(rsqe); i; i--) |
| 2180 | { |
| 2181 | if ((sb = dev_alloc_skb(NS_SMSKBSIZE)) == NULL) |
| 2182 | { |
| 2183 | printk("nicstar%d: Can't allocate buffers for aal0.\n", |
| 2184 | card->index); |
| 2185 | atomic_add(i,&vcc->stats->rx_drop); |
| 2186 | break; |
| 2187 | } |
| 2188 | if (!atm_charge(vcc, sb->truesize)) |
| 2189 | { |
| 2190 | RXPRINTK("nicstar%d: atm_charge() dropped aal0 packets.\n", |
| 2191 | card->index); |
| 2192 | atomic_add(i-1,&vcc->stats->rx_drop); /* already increased by 1 */ |
| 2193 | dev_kfree_skb_any(sb); |
| 2194 | break; |
| 2195 | } |
| 2196 | /* Rebuild the header */ |
| 2197 | *((u32 *) sb->data) = le32_to_cpu(rsqe->word_1) << 4 | |
| 2198 | (ns_rsqe_clp(rsqe) ? 0x00000001 : 0x00000000); |
| 2199 | if (i == 1 && ns_rsqe_eopdu(rsqe)) |
| 2200 | *((u32 *) sb->data) |= 0x00000002; |
| 2201 | skb_put(sb, NS_AAL0_HEADER); |
| 2202 | memcpy(sb->tail, cell, ATM_CELL_PAYLOAD); |
| 2203 | skb_put(sb, ATM_CELL_PAYLOAD); |
| 2204 | ATM_SKB(sb)->vcc = vcc; |
| 2205 | do_gettimeofday(&sb->stamp); |
| 2206 | vcc->push(vcc, sb); |
| 2207 | atomic_inc(&vcc->stats->rx); |
| 2208 | cell += ATM_CELL_PAYLOAD; |
| 2209 | } |
| 2210 | |
| 2211 | recycle_rx_buf(card, skb); |
| 2212 | return; |
| 2213 | } |
| 2214 | |
| 2215 | /* To reach this point, the AAL layer can only be AAL5 */ |
| 2216 | |
| 2217 | if ((iovb = vc->rx_iov) == NULL) |
| 2218 | { |
| 2219 | iovb = skb_dequeue(&(card->iovpool.queue)); |
| 2220 | if (iovb == NULL) /* No buffers in the queue */ |
| 2221 | { |
| 2222 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC); |
| 2223 | if (iovb == NULL) |
| 2224 | { |
| 2225 | printk("nicstar%d: Out of iovec buffers.\n", card->index); |
| 2226 | atomic_inc(&vcc->stats->rx_drop); |
| 2227 | recycle_rx_buf(card, skb); |
| 2228 | return; |
| 2229 | } |
| 2230 | } |
| 2231 | else |
| 2232 | if (--card->iovpool.count < card->iovnr.min) |
| 2233 | { |
| 2234 | struct sk_buff *new_iovb; |
| 2235 | if ((new_iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL) |
| 2236 | { |
| 2237 | skb_queue_tail(&card->iovpool.queue, new_iovb); |
| 2238 | card->iovpool.count++; |
| 2239 | } |
| 2240 | } |
| 2241 | vc->rx_iov = iovb; |
| 2242 | NS_SKB(iovb)->iovcnt = 0; |
| 2243 | iovb->len = 0; |
| 2244 | iovb->tail = iovb->data = iovb->head; |
| 2245 | NS_SKB(iovb)->vcc = vcc; |
| 2246 | /* IMPORTANT: a pointer to the sk_buff containing the small or large |
| 2247 | buffer is stored as iovec base, NOT a pointer to the |
| 2248 | small or large buffer itself. */ |
| 2249 | } |
| 2250 | else if (NS_SKB(iovb)->iovcnt >= NS_MAX_IOVECS) |
| 2251 | { |
| 2252 | printk("nicstar%d: received too big AAL5 SDU.\n", card->index); |
| 2253 | atomic_inc(&vcc->stats->rx_err); |
| 2254 | recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, NS_MAX_IOVECS); |
| 2255 | NS_SKB(iovb)->iovcnt = 0; |
| 2256 | iovb->len = 0; |
| 2257 | iovb->tail = iovb->data = iovb->head; |
| 2258 | NS_SKB(iovb)->vcc = vcc; |
| 2259 | } |
| 2260 | iov = &((struct iovec *) iovb->data)[NS_SKB(iovb)->iovcnt++]; |
| 2261 | iov->iov_base = (void *) skb; |
| 2262 | iov->iov_len = ns_rsqe_cellcount(rsqe) * 48; |
| 2263 | iovb->len += iov->iov_len; |
| 2264 | |
| 2265 | if (NS_SKB(iovb)->iovcnt == 1) |
| 2266 | { |
| 2267 | if (skb->list != &card->sbpool.queue) |
| 2268 | { |
| 2269 | printk("nicstar%d: Expected a small buffer, and this is not one.\n", |
| 2270 | card->index); |
| 2271 | which_list(card, skb); |
| 2272 | atomic_inc(&vcc->stats->rx_err); |
| 2273 | recycle_rx_buf(card, skb); |
| 2274 | vc->rx_iov = NULL; |
| 2275 | recycle_iov_buf(card, iovb); |
| 2276 | return; |
| 2277 | } |
| 2278 | } |
| 2279 | else /* NS_SKB(iovb)->iovcnt >= 2 */ |
| 2280 | { |
| 2281 | if (skb->list != &card->lbpool.queue) |
| 2282 | { |
| 2283 | printk("nicstar%d: Expected a large buffer, and this is not one.\n", |
| 2284 | card->index); |
| 2285 | which_list(card, skb); |
| 2286 | atomic_inc(&vcc->stats->rx_err); |
| 2287 | recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, |
| 2288 | NS_SKB(iovb)->iovcnt); |
| 2289 | vc->rx_iov = NULL; |
| 2290 | recycle_iov_buf(card, iovb); |
| 2291 | return; |
| 2292 | } |
| 2293 | } |
| 2294 | |
| 2295 | if (ns_rsqe_eopdu(rsqe)) |
| 2296 | { |
| 2297 | /* This works correctly regardless of the endianness of the host */ |
| 2298 | unsigned char *L1L2 = (unsigned char *)((u32)skb->data + |
| 2299 | iov->iov_len - 6); |
| 2300 | aal5_len = L1L2[0] << 8 | L1L2[1]; |
| 2301 | len = (aal5_len == 0x0000) ? 0x10000 : aal5_len; |
| 2302 | if (ns_rsqe_crcerr(rsqe) || |
| 2303 | len + 8 > iovb->len || len + (47 + 8) < iovb->len) |
| 2304 | { |
| 2305 | printk("nicstar%d: AAL5 CRC error", card->index); |
| 2306 | if (len + 8 > iovb->len || len + (47 + 8) < iovb->len) |
| 2307 | printk(" - PDU size mismatch.\n"); |
| 2308 | else |
| 2309 | printk(".\n"); |
| 2310 | atomic_inc(&vcc->stats->rx_err); |
| 2311 | recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, |
| 2312 | NS_SKB(iovb)->iovcnt); |
| 2313 | vc->rx_iov = NULL; |
| 2314 | recycle_iov_buf(card, iovb); |
| 2315 | return; |
| 2316 | } |
| 2317 | |
| 2318 | /* By this point we (hopefully) have a complete SDU without errors. */ |
| 2319 | |
| 2320 | if (NS_SKB(iovb)->iovcnt == 1) /* Just a small buffer */ |
| 2321 | { |
| 2322 | /* skb points to a small buffer */ |
| 2323 | if (!atm_charge(vcc, skb->truesize)) |
| 2324 | { |
| 2325 | push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data), |
| 2326 | 0, 0); |
| 2327 | atomic_inc(&vcc->stats->rx_drop); |
| 2328 | } |
| 2329 | else |
| 2330 | { |
| 2331 | skb_put(skb, len); |
| 2332 | dequeue_sm_buf(card, skb); |
| 2333 | #ifdef NS_USE_DESTRUCTORS |
| 2334 | skb->destructor = ns_sb_destructor; |
| 2335 | #endif /* NS_USE_DESTRUCTORS */ |
| 2336 | ATM_SKB(skb)->vcc = vcc; |
| 2337 | do_gettimeofday(&skb->stamp); |
| 2338 | vcc->push(vcc, skb); |
| 2339 | atomic_inc(&vcc->stats->rx); |
| 2340 | } |
| 2341 | } |
| 2342 | else if (NS_SKB(iovb)->iovcnt == 2) /* One small plus one large buffer */ |
| 2343 | { |
| 2344 | struct sk_buff *sb; |
| 2345 | |
| 2346 | sb = (struct sk_buff *) (iov - 1)->iov_base; |
| 2347 | /* skb points to a large buffer */ |
| 2348 | |
| 2349 | if (len <= NS_SMBUFSIZE) |
| 2350 | { |
| 2351 | if (!atm_charge(vcc, sb->truesize)) |
| 2352 | { |
| 2353 | push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), |
| 2354 | 0, 0); |
| 2355 | atomic_inc(&vcc->stats->rx_drop); |
| 2356 | } |
| 2357 | else |
| 2358 | { |
| 2359 | skb_put(sb, len); |
| 2360 | dequeue_sm_buf(card, sb); |
| 2361 | #ifdef NS_USE_DESTRUCTORS |
| 2362 | sb->destructor = ns_sb_destructor; |
| 2363 | #endif /* NS_USE_DESTRUCTORS */ |
| 2364 | ATM_SKB(sb)->vcc = vcc; |
| 2365 | do_gettimeofday(&sb->stamp); |
| 2366 | vcc->push(vcc, sb); |
| 2367 | atomic_inc(&vcc->stats->rx); |
| 2368 | } |
| 2369 | |
| 2370 | push_rxbufs(card, BUF_LG, (u32) skb, |
| 2371 | (u32) virt_to_bus(skb->data), 0, 0); |
| 2372 | |
| 2373 | } |
| 2374 | else /* len > NS_SMBUFSIZE, the usual case */ |
| 2375 | { |
| 2376 | if (!atm_charge(vcc, skb->truesize)) |
| 2377 | { |
| 2378 | push_rxbufs(card, BUF_LG, (u32) skb, |
| 2379 | (u32) virt_to_bus(skb->data), 0, 0); |
| 2380 | atomic_inc(&vcc->stats->rx_drop); |
| 2381 | } |
| 2382 | else |
| 2383 | { |
| 2384 | dequeue_lg_buf(card, skb); |
| 2385 | #ifdef NS_USE_DESTRUCTORS |
| 2386 | skb->destructor = ns_lb_destructor; |
| 2387 | #endif /* NS_USE_DESTRUCTORS */ |
| 2388 | skb_push(skb, NS_SMBUFSIZE); |
| 2389 | memcpy(skb->data, sb->data, NS_SMBUFSIZE); |
| 2390 | skb_put(skb, len - NS_SMBUFSIZE); |
| 2391 | ATM_SKB(skb)->vcc = vcc; |
| 2392 | do_gettimeofday(&skb->stamp); |
| 2393 | vcc->push(vcc, skb); |
| 2394 | atomic_inc(&vcc->stats->rx); |
| 2395 | } |
| 2396 | |
| 2397 | push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), |
| 2398 | 0, 0); |
| 2399 | |
| 2400 | } |
| 2401 | |
| 2402 | } |
| 2403 | else /* Must push a huge buffer */ |
| 2404 | { |
| 2405 | struct sk_buff *hb, *sb, *lb; |
| 2406 | int remaining, tocopy; |
| 2407 | int j; |
| 2408 | |
| 2409 | hb = skb_dequeue(&(card->hbpool.queue)); |
| 2410 | if (hb == NULL) /* No buffers in the queue */ |
| 2411 | { |
| 2412 | |
| 2413 | hb = dev_alloc_skb(NS_HBUFSIZE); |
| 2414 | if (hb == NULL) |
| 2415 | { |
| 2416 | printk("nicstar%d: Out of huge buffers.\n", card->index); |
| 2417 | atomic_inc(&vcc->stats->rx_drop); |
| 2418 | recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, |
| 2419 | NS_SKB(iovb)->iovcnt); |
| 2420 | vc->rx_iov = NULL; |
| 2421 | recycle_iov_buf(card, iovb); |
| 2422 | return; |
| 2423 | } |
| 2424 | else if (card->hbpool.count < card->hbnr.min) |
| 2425 | { |
| 2426 | struct sk_buff *new_hb; |
| 2427 | if ((new_hb = dev_alloc_skb(NS_HBUFSIZE)) != NULL) |
| 2428 | { |
| 2429 | skb_queue_tail(&card->hbpool.queue, new_hb); |
| 2430 | card->hbpool.count++; |
| 2431 | } |
| 2432 | } |
| 2433 | } |
| 2434 | else |
| 2435 | if (--card->hbpool.count < card->hbnr.min) |
| 2436 | { |
| 2437 | struct sk_buff *new_hb; |
| 2438 | if ((new_hb = dev_alloc_skb(NS_HBUFSIZE)) != NULL) |
| 2439 | { |
| 2440 | skb_queue_tail(&card->hbpool.queue, new_hb); |
| 2441 | card->hbpool.count++; |
| 2442 | } |
| 2443 | if (card->hbpool.count < card->hbnr.min) |
| 2444 | { |
| 2445 | if ((new_hb = dev_alloc_skb(NS_HBUFSIZE)) != NULL) |
| 2446 | { |
| 2447 | skb_queue_tail(&card->hbpool.queue, new_hb); |
| 2448 | card->hbpool.count++; |
| 2449 | } |
| 2450 | } |
| 2451 | } |
| 2452 | |
| 2453 | iov = (struct iovec *) iovb->data; |
| 2454 | |
| 2455 | if (!atm_charge(vcc, hb->truesize)) |
| 2456 | { |
| 2457 | recycle_iovec_rx_bufs(card, iov, NS_SKB(iovb)->iovcnt); |
| 2458 | if (card->hbpool.count < card->hbnr.max) |
| 2459 | { |
| 2460 | skb_queue_tail(&card->hbpool.queue, hb); |
| 2461 | card->hbpool.count++; |
| 2462 | } |
| 2463 | else |
| 2464 | dev_kfree_skb_any(hb); |
| 2465 | atomic_inc(&vcc->stats->rx_drop); |
| 2466 | } |
| 2467 | else |
| 2468 | { |
| 2469 | /* Copy the small buffer to the huge buffer */ |
| 2470 | sb = (struct sk_buff *) iov->iov_base; |
| 2471 | memcpy(hb->data, sb->data, iov->iov_len); |
| 2472 | skb_put(hb, iov->iov_len); |
| 2473 | remaining = len - iov->iov_len; |
| 2474 | iov++; |
| 2475 | /* Free the small buffer */ |
| 2476 | push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), |
| 2477 | 0, 0); |
| 2478 | |
| 2479 | /* Copy all large buffers to the huge buffer and free them */ |
| 2480 | for (j = 1; j < NS_SKB(iovb)->iovcnt; j++) |
| 2481 | { |
| 2482 | lb = (struct sk_buff *) iov->iov_base; |
| 2483 | tocopy = min_t(int, remaining, iov->iov_len); |
| 2484 | memcpy(hb->tail, lb->data, tocopy); |
| 2485 | skb_put(hb, tocopy); |
| 2486 | iov++; |
| 2487 | remaining -= tocopy; |
| 2488 | push_rxbufs(card, BUF_LG, (u32) lb, |
| 2489 | (u32) virt_to_bus(lb->data), 0, 0); |
| 2490 | } |
| 2491 | #ifdef EXTRA_DEBUG |
| 2492 | if (remaining != 0 || hb->len != len) |
| 2493 | printk("nicstar%d: Huge buffer len mismatch.\n", card->index); |
| 2494 | #endif /* EXTRA_DEBUG */ |
| 2495 | ATM_SKB(hb)->vcc = vcc; |
| 2496 | #ifdef NS_USE_DESTRUCTORS |
| 2497 | hb->destructor = ns_hb_destructor; |
| 2498 | #endif /* NS_USE_DESTRUCTORS */ |
| 2499 | do_gettimeofday(&hb->stamp); |
| 2500 | vcc->push(vcc, hb); |
| 2501 | atomic_inc(&vcc->stats->rx); |
| 2502 | } |
| 2503 | } |
| 2504 | |
| 2505 | vc->rx_iov = NULL; |
| 2506 | recycle_iov_buf(card, iovb); |
| 2507 | } |
| 2508 | |
| 2509 | } |
| 2510 | |
| 2511 | |
| 2512 | |
| 2513 | #ifdef NS_USE_DESTRUCTORS |
| 2514 | |
| 2515 | static void ns_sb_destructor(struct sk_buff *sb) |
| 2516 | { |
| 2517 | ns_dev *card; |
| 2518 | u32 stat; |
| 2519 | |
| 2520 | card = (ns_dev *) ATM_SKB(sb)->vcc->dev->dev_data; |
| 2521 | stat = readl(card->membase + STAT); |
| 2522 | card->sbfqc = ns_stat_sfbqc_get(stat); |
| 2523 | card->lbfqc = ns_stat_lfbqc_get(stat); |
| 2524 | |
| 2525 | do |
| 2526 | { |
| 2527 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); |
| 2528 | if (sb == NULL) |
| 2529 | break; |
| 2530 | skb_queue_tail(&card->sbpool.queue, sb); |
| 2531 | skb_reserve(sb, NS_AAL0_HEADER); |
| 2532 | push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); |
| 2533 | } while (card->sbfqc < card->sbnr.min); |
| 2534 | } |
| 2535 | |
| 2536 | |
| 2537 | |
| 2538 | static void ns_lb_destructor(struct sk_buff *lb) |
| 2539 | { |
| 2540 | ns_dev *card; |
| 2541 | u32 stat; |
| 2542 | |
| 2543 | card = (ns_dev *) ATM_SKB(lb)->vcc->dev->dev_data; |
| 2544 | stat = readl(card->membase + STAT); |
| 2545 | card->sbfqc = ns_stat_sfbqc_get(stat); |
| 2546 | card->lbfqc = ns_stat_lfbqc_get(stat); |
| 2547 | |
| 2548 | do |
| 2549 | { |
| 2550 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); |
| 2551 | if (lb == NULL) |
| 2552 | break; |
| 2553 | skb_queue_tail(&card->lbpool.queue, lb); |
| 2554 | skb_reserve(lb, NS_SMBUFSIZE); |
| 2555 | push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); |
| 2556 | } while (card->lbfqc < card->lbnr.min); |
| 2557 | } |
| 2558 | |
| 2559 | |
| 2560 | |
| 2561 | static void ns_hb_destructor(struct sk_buff *hb) |
| 2562 | { |
| 2563 | ns_dev *card; |
| 2564 | |
| 2565 | card = (ns_dev *) ATM_SKB(hb)->vcc->dev->dev_data; |
| 2566 | |
| 2567 | while (card->hbpool.count < card->hbnr.init) |
| 2568 | { |
| 2569 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); |
| 2570 | if (hb == NULL) |
| 2571 | break; |
| 2572 | skb_queue_tail(&card->hbpool.queue, hb); |
| 2573 | card->hbpool.count++; |
| 2574 | } |
| 2575 | } |
| 2576 | |
| 2577 | #endif /* NS_USE_DESTRUCTORS */ |
| 2578 | |
| 2579 | |
| 2580 | |
| 2581 | static void recycle_rx_buf(ns_dev *card, struct sk_buff *skb) |
| 2582 | { |
| 2583 | if (skb->list == &card->sbpool.queue) |
| 2584 | push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data), 0, 0); |
| 2585 | else if (skb->list == &card->lbpool.queue) |
| 2586 | push_rxbufs(card, BUF_LG, (u32) skb, (u32) virt_to_bus(skb->data), 0, 0); |
| 2587 | else |
| 2588 | { |
| 2589 | printk("nicstar%d: What kind of rx buffer is this?\n", card->index); |
| 2590 | dev_kfree_skb_any(skb); |
| 2591 | } |
| 2592 | } |
| 2593 | |
| 2594 | |
| 2595 | |
| 2596 | static void recycle_iovec_rx_bufs(ns_dev *card, struct iovec *iov, int count) |
| 2597 | { |
| 2598 | struct sk_buff *skb; |
| 2599 | |
| 2600 | for (; count > 0; count--) |
| 2601 | { |
| 2602 | skb = (struct sk_buff *) (iov++)->iov_base; |
| 2603 | if (skb->list == &card->sbpool.queue) |
| 2604 | push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data), |
| 2605 | 0, 0); |
| 2606 | else if (skb->list == &card->lbpool.queue) |
| 2607 | push_rxbufs(card, BUF_LG, (u32) skb, (u32) virt_to_bus(skb->data), |
| 2608 | 0, 0); |
| 2609 | else |
| 2610 | { |
| 2611 | printk("nicstar%d: What kind of rx buffer is this?\n", card->index); |
| 2612 | dev_kfree_skb_any(skb); |
| 2613 | } |
| 2614 | } |
| 2615 | } |
| 2616 | |
| 2617 | |
| 2618 | |
| 2619 | static void recycle_iov_buf(ns_dev *card, struct sk_buff *iovb) |
| 2620 | { |
| 2621 | if (card->iovpool.count < card->iovnr.max) |
| 2622 | { |
| 2623 | skb_queue_tail(&card->iovpool.queue, iovb); |
| 2624 | card->iovpool.count++; |
| 2625 | } |
| 2626 | else |
| 2627 | dev_kfree_skb_any(iovb); |
| 2628 | } |
| 2629 | |
| 2630 | |
| 2631 | |
| 2632 | static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb) |
| 2633 | { |
| 2634 | skb_unlink(sb); |
| 2635 | #ifdef NS_USE_DESTRUCTORS |
| 2636 | if (card->sbfqc < card->sbnr.min) |
| 2637 | #else |
| 2638 | if (card->sbfqc < card->sbnr.init) |
| 2639 | { |
| 2640 | struct sk_buff *new_sb; |
| 2641 | if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) |
| 2642 | { |
| 2643 | skb_queue_tail(&card->sbpool.queue, new_sb); |
| 2644 | skb_reserve(new_sb, NS_AAL0_HEADER); |
| 2645 | push_rxbufs(card, BUF_SM, (u32) new_sb, |
| 2646 | (u32) virt_to_bus(new_sb->data), 0, 0); |
| 2647 | } |
| 2648 | } |
| 2649 | if (card->sbfqc < card->sbnr.init) |
| 2650 | #endif /* NS_USE_DESTRUCTORS */ |
| 2651 | { |
| 2652 | struct sk_buff *new_sb; |
| 2653 | if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) |
| 2654 | { |
| 2655 | skb_queue_tail(&card->sbpool.queue, new_sb); |
| 2656 | skb_reserve(new_sb, NS_AAL0_HEADER); |
| 2657 | push_rxbufs(card, BUF_SM, (u32) new_sb, |
| 2658 | (u32) virt_to_bus(new_sb->data), 0, 0); |
| 2659 | } |
| 2660 | } |
| 2661 | } |
| 2662 | |
| 2663 | |
| 2664 | |
| 2665 | static void dequeue_lg_buf(ns_dev *card, struct sk_buff *lb) |
| 2666 | { |
| 2667 | skb_unlink(lb); |
| 2668 | #ifdef NS_USE_DESTRUCTORS |
| 2669 | if (card->lbfqc < card->lbnr.min) |
| 2670 | #else |
| 2671 | if (card->lbfqc < card->lbnr.init) |
| 2672 | { |
| 2673 | struct sk_buff *new_lb; |
| 2674 | if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) |
| 2675 | { |
| 2676 | skb_queue_tail(&card->lbpool.queue, new_lb); |
| 2677 | skb_reserve(new_lb, NS_SMBUFSIZE); |
| 2678 | push_rxbufs(card, BUF_LG, (u32) new_lb, |
| 2679 | (u32) virt_to_bus(new_lb->data), 0, 0); |
| 2680 | } |
| 2681 | } |
| 2682 | if (card->lbfqc < card->lbnr.init) |
| 2683 | #endif /* NS_USE_DESTRUCTORS */ |
| 2684 | { |
| 2685 | struct sk_buff *new_lb; |
| 2686 | if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) |
| 2687 | { |
| 2688 | skb_queue_tail(&card->lbpool.queue, new_lb); |
| 2689 | skb_reserve(new_lb, NS_SMBUFSIZE); |
| 2690 | push_rxbufs(card, BUF_LG, (u32) new_lb, |
| 2691 | (u32) virt_to_bus(new_lb->data), 0, 0); |
| 2692 | } |
| 2693 | } |
| 2694 | } |
| 2695 | |
| 2696 | |
| 2697 | |
| 2698 | static int ns_proc_read(struct atm_dev *dev, loff_t *pos, char *page) |
| 2699 | { |
| 2700 | u32 stat; |
| 2701 | ns_dev *card; |
| 2702 | int left; |
| 2703 | |
| 2704 | left = (int) *pos; |
| 2705 | card = (ns_dev *) dev->dev_data; |
| 2706 | stat = readl(card->membase + STAT); |
| 2707 | if (!left--) |
| 2708 | return sprintf(page, "Pool count min init max \n"); |
| 2709 | if (!left--) |
| 2710 | return sprintf(page, "Small %5d %5d %5d %5d \n", |
| 2711 | ns_stat_sfbqc_get(stat), card->sbnr.min, card->sbnr.init, |
| 2712 | card->sbnr.max); |
| 2713 | if (!left--) |
| 2714 | return sprintf(page, "Large %5d %5d %5d %5d \n", |
| 2715 | ns_stat_lfbqc_get(stat), card->lbnr.min, card->lbnr.init, |
| 2716 | card->lbnr.max); |
| 2717 | if (!left--) |
| 2718 | return sprintf(page, "Huge %5d %5d %5d %5d \n", card->hbpool.count, |
| 2719 | card->hbnr.min, card->hbnr.init, card->hbnr.max); |
| 2720 | if (!left--) |
| 2721 | return sprintf(page, "Iovec %5d %5d %5d %5d \n", card->iovpool.count, |
| 2722 | card->iovnr.min, card->iovnr.init, card->iovnr.max); |
| 2723 | if (!left--) |
| 2724 | { |
| 2725 | int retval; |
| 2726 | retval = sprintf(page, "Interrupt counter: %u \n", card->intcnt); |
| 2727 | card->intcnt = 0; |
| 2728 | return retval; |
| 2729 | } |
| 2730 | #if 0 |
| 2731 | /* Dump 25.6 Mbps PHY registers */ |
| 2732 | /* Now there's a 25.6 Mbps PHY driver this code isn't needed. I left it |
| 2733 | here just in case it's needed for debugging. */ |
| 2734 | if (card->max_pcr == ATM_25_PCR && !left--) |
| 2735 | { |
| 2736 | u32 phy_regs[4]; |
| 2737 | u32 i; |
| 2738 | |
| 2739 | for (i = 0; i < 4; i++) |
| 2740 | { |
| 2741 | while (CMD_BUSY(card)); |
| 2742 | writel(NS_CMD_READ_UTILITY | 0x00000200 | i, card->membase + CMD); |
| 2743 | while (CMD_BUSY(card)); |
| 2744 | phy_regs[i] = readl(card->membase + DR0) & 0x000000FF; |
| 2745 | } |
| 2746 | |
| 2747 | return sprintf(page, "PHY regs: 0x%02X 0x%02X 0x%02X 0x%02X \n", |
| 2748 | phy_regs[0], phy_regs[1], phy_regs[2], phy_regs[3]); |
| 2749 | } |
| 2750 | #endif /* 0 - Dump 25.6 Mbps PHY registers */ |
| 2751 | #if 0 |
| 2752 | /* Dump TST */ |
| 2753 | if (left-- < NS_TST_NUM_ENTRIES) |
| 2754 | { |
| 2755 | if (card->tste2vc[left + 1] == NULL) |
| 2756 | return sprintf(page, "%5d - VBR/UBR \n", left + 1); |
| 2757 | else |
| 2758 | return sprintf(page, "%5d - %d %d \n", left + 1, |
| 2759 | card->tste2vc[left + 1]->tx_vcc->vpi, |
| 2760 | card->tste2vc[left + 1]->tx_vcc->vci); |
| 2761 | } |
| 2762 | #endif /* 0 */ |
| 2763 | return 0; |
| 2764 | } |
| 2765 | |
| 2766 | |
| 2767 | |
| 2768 | static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) |
| 2769 | { |
| 2770 | ns_dev *card; |
| 2771 | pool_levels pl; |
| 2772 | int btype; |
| 2773 | unsigned long flags; |
| 2774 | |
| 2775 | card = dev->dev_data; |
| 2776 | switch (cmd) |
| 2777 | { |
| 2778 | case NS_GETPSTAT: |
| 2779 | if (get_user(pl.buftype, &((pool_levels __user *) arg)->buftype)) |
| 2780 | return -EFAULT; |
| 2781 | switch (pl.buftype) |
| 2782 | { |
| 2783 | case NS_BUFTYPE_SMALL: |
| 2784 | pl.count = ns_stat_sfbqc_get(readl(card->membase + STAT)); |
| 2785 | pl.level.min = card->sbnr.min; |
| 2786 | pl.level.init = card->sbnr.init; |
| 2787 | pl.level.max = card->sbnr.max; |
| 2788 | break; |
| 2789 | |
| 2790 | case NS_BUFTYPE_LARGE: |
| 2791 | pl.count = ns_stat_lfbqc_get(readl(card->membase + STAT)); |
| 2792 | pl.level.min = card->lbnr.min; |
| 2793 | pl.level.init = card->lbnr.init; |
| 2794 | pl.level.max = card->lbnr.max; |
| 2795 | break; |
| 2796 | |
| 2797 | case NS_BUFTYPE_HUGE: |
| 2798 | pl.count = card->hbpool.count; |
| 2799 | pl.level.min = card->hbnr.min; |
| 2800 | pl.level.init = card->hbnr.init; |
| 2801 | pl.level.max = card->hbnr.max; |
| 2802 | break; |
| 2803 | |
| 2804 | case NS_BUFTYPE_IOVEC: |
| 2805 | pl.count = card->iovpool.count; |
| 2806 | pl.level.min = card->iovnr.min; |
| 2807 | pl.level.init = card->iovnr.init; |
| 2808 | pl.level.max = card->iovnr.max; |
| 2809 | break; |
| 2810 | |
| 2811 | default: |
| 2812 | return -ENOIOCTLCMD; |
| 2813 | |
| 2814 | } |
| 2815 | if (!copy_to_user((pool_levels __user *) arg, &pl, sizeof(pl))) |
| 2816 | return (sizeof(pl)); |
| 2817 | else |
| 2818 | return -EFAULT; |
| 2819 | |
| 2820 | case NS_SETBUFLEV: |
| 2821 | if (!capable(CAP_NET_ADMIN)) |
| 2822 | return -EPERM; |
| 2823 | if (copy_from_user(&pl, (pool_levels __user *) arg, sizeof(pl))) |
| 2824 | return -EFAULT; |
| 2825 | if (pl.level.min >= pl.level.init || pl.level.init >= pl.level.max) |
| 2826 | return -EINVAL; |
| 2827 | if (pl.level.min == 0) |
| 2828 | return -EINVAL; |
| 2829 | switch (pl.buftype) |
| 2830 | { |
| 2831 | case NS_BUFTYPE_SMALL: |
| 2832 | if (pl.level.max > TOP_SB) |
| 2833 | return -EINVAL; |
| 2834 | card->sbnr.min = pl.level.min; |
| 2835 | card->sbnr.init = pl.level.init; |
| 2836 | card->sbnr.max = pl.level.max; |
| 2837 | break; |
| 2838 | |
| 2839 | case NS_BUFTYPE_LARGE: |
| 2840 | if (pl.level.max > TOP_LB) |
| 2841 | return -EINVAL; |
| 2842 | card->lbnr.min = pl.level.min; |
| 2843 | card->lbnr.init = pl.level.init; |
| 2844 | card->lbnr.max = pl.level.max; |
| 2845 | break; |
| 2846 | |
| 2847 | case NS_BUFTYPE_HUGE: |
| 2848 | if (pl.level.max > TOP_HB) |
| 2849 | return -EINVAL; |
| 2850 | card->hbnr.min = pl.level.min; |
| 2851 | card->hbnr.init = pl.level.init; |
| 2852 | card->hbnr.max = pl.level.max; |
| 2853 | break; |
| 2854 | |
| 2855 | case NS_BUFTYPE_IOVEC: |
| 2856 | if (pl.level.max > TOP_IOVB) |
| 2857 | return -EINVAL; |
| 2858 | card->iovnr.min = pl.level.min; |
| 2859 | card->iovnr.init = pl.level.init; |
| 2860 | card->iovnr.max = pl.level.max; |
| 2861 | break; |
| 2862 | |
| 2863 | default: |
| 2864 | return -EINVAL; |
| 2865 | |
| 2866 | } |
| 2867 | return 0; |
| 2868 | |
| 2869 | case NS_ADJBUFLEV: |
| 2870 | if (!capable(CAP_NET_ADMIN)) |
| 2871 | return -EPERM; |
| 2872 | btype = (int) arg; /* an int is the same size as a pointer */ |
| 2873 | switch (btype) |
| 2874 | { |
| 2875 | case NS_BUFTYPE_SMALL: |
| 2876 | while (card->sbfqc < card->sbnr.init) |
| 2877 | { |
| 2878 | struct sk_buff *sb; |
| 2879 | |
| 2880 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); |
| 2881 | if (sb == NULL) |
| 2882 | return -ENOMEM; |
| 2883 | skb_queue_tail(&card->sbpool.queue, sb); |
| 2884 | skb_reserve(sb, NS_AAL0_HEADER); |
| 2885 | push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); |
| 2886 | } |
| 2887 | break; |
| 2888 | |
| 2889 | case NS_BUFTYPE_LARGE: |
| 2890 | while (card->lbfqc < card->lbnr.init) |
| 2891 | { |
| 2892 | struct sk_buff *lb; |
| 2893 | |
| 2894 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); |
| 2895 | if (lb == NULL) |
| 2896 | return -ENOMEM; |
| 2897 | skb_queue_tail(&card->lbpool.queue, lb); |
| 2898 | skb_reserve(lb, NS_SMBUFSIZE); |
| 2899 | push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); |
| 2900 | } |
| 2901 | break; |
| 2902 | |
| 2903 | case NS_BUFTYPE_HUGE: |
| 2904 | while (card->hbpool.count > card->hbnr.init) |
| 2905 | { |
| 2906 | struct sk_buff *hb; |
| 2907 | |
| 2908 | ns_grab_int_lock(card, flags); |
| 2909 | hb = skb_dequeue(&card->hbpool.queue); |
| 2910 | card->hbpool.count--; |
| 2911 | spin_unlock_irqrestore(&card->int_lock, flags); |
| 2912 | if (hb == NULL) |
| 2913 | printk("nicstar%d: huge buffer count inconsistent.\n", |
| 2914 | card->index); |
| 2915 | else |
| 2916 | dev_kfree_skb_any(hb); |
| 2917 | |
| 2918 | } |
| 2919 | while (card->hbpool.count < card->hbnr.init) |
| 2920 | { |
| 2921 | struct sk_buff *hb; |
| 2922 | |
| 2923 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); |
| 2924 | if (hb == NULL) |
| 2925 | return -ENOMEM; |
| 2926 | ns_grab_int_lock(card, flags); |
| 2927 | skb_queue_tail(&card->hbpool.queue, hb); |
| 2928 | card->hbpool.count++; |
| 2929 | spin_unlock_irqrestore(&card->int_lock, flags); |
| 2930 | } |
| 2931 | break; |
| 2932 | |
| 2933 | case NS_BUFTYPE_IOVEC: |
| 2934 | while (card->iovpool.count > card->iovnr.init) |
| 2935 | { |
| 2936 | struct sk_buff *iovb; |
| 2937 | |
| 2938 | ns_grab_int_lock(card, flags); |
| 2939 | iovb = skb_dequeue(&card->iovpool.queue); |
| 2940 | card->iovpool.count--; |
| 2941 | spin_unlock_irqrestore(&card->int_lock, flags); |
| 2942 | if (iovb == NULL) |
| 2943 | printk("nicstar%d: iovec buffer count inconsistent.\n", |
| 2944 | card->index); |
| 2945 | else |
| 2946 | dev_kfree_skb_any(iovb); |
| 2947 | |
| 2948 | } |
| 2949 | while (card->iovpool.count < card->iovnr.init) |
| 2950 | { |
| 2951 | struct sk_buff *iovb; |
| 2952 | |
| 2953 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); |
| 2954 | if (iovb == NULL) |
| 2955 | return -ENOMEM; |
| 2956 | ns_grab_int_lock(card, flags); |
| 2957 | skb_queue_tail(&card->iovpool.queue, iovb); |
| 2958 | card->iovpool.count++; |
| 2959 | spin_unlock_irqrestore(&card->int_lock, flags); |
| 2960 | } |
| 2961 | break; |
| 2962 | |
| 2963 | default: |
| 2964 | return -EINVAL; |
| 2965 | |
| 2966 | } |
| 2967 | return 0; |
| 2968 | |
| 2969 | default: |
| 2970 | if (dev->phy && dev->phy->ioctl) { |
| 2971 | return dev->phy->ioctl(dev, cmd, arg); |
| 2972 | } |
| 2973 | else { |
| 2974 | printk("nicstar%d: %s == NULL \n", card->index, |
| 2975 | dev->phy ? "dev->phy->ioctl" : "dev->phy"); |
| 2976 | return -ENOIOCTLCMD; |
| 2977 | } |
| 2978 | } |
| 2979 | } |
| 2980 | |
| 2981 | |
| 2982 | |
| 2983 | static void which_list(ns_dev *card, struct sk_buff *skb) |
| 2984 | { |
| 2985 | printk("It's a %s buffer.\n", skb->list == &card->sbpool.queue ? |
| 2986 | "small" : skb->list == &card->lbpool.queue ? "large" : |
| 2987 | skb->list == &card->hbpool.queue ? "huge" : |
| 2988 | skb->list == &card->iovpool.queue ? "iovec" : "unknown"); |
| 2989 | } |
| 2990 | |
| 2991 | |
| 2992 | |
| 2993 | static void ns_poll(unsigned long arg) |
| 2994 | { |
| 2995 | int i; |
| 2996 | ns_dev *card; |
| 2997 | unsigned long flags; |
| 2998 | u32 stat_r, stat_w; |
| 2999 | |
| 3000 | PRINTK("nicstar: Entering ns_poll().\n"); |
| 3001 | for (i = 0; i < num_cards; i++) |
| 3002 | { |
| 3003 | card = cards[i]; |
| 3004 | if (spin_is_locked(&card->int_lock)) { |
| 3005 | /* Probably it isn't worth spinning */ |
| 3006 | continue; |
| 3007 | } |
| 3008 | ns_grab_int_lock(card, flags); |
| 3009 | |
| 3010 | stat_w = 0; |
| 3011 | stat_r = readl(card->membase + STAT); |
| 3012 | if (stat_r & NS_STAT_TSIF) |
| 3013 | stat_w |= NS_STAT_TSIF; |
| 3014 | if (stat_r & NS_STAT_EOPDU) |
| 3015 | stat_w |= NS_STAT_EOPDU; |
| 3016 | |
| 3017 | process_tsq(card); |
| 3018 | process_rsq(card); |
| 3019 | |
| 3020 | writel(stat_w, card->membase + STAT); |
| 3021 | spin_unlock_irqrestore(&card->int_lock, flags); |
| 3022 | } |
| 3023 | mod_timer(&ns_timer, jiffies + NS_POLL_PERIOD); |
| 3024 | PRINTK("nicstar: Leaving ns_poll().\n"); |
| 3025 | } |
| 3026 | |
| 3027 | |
| 3028 | |
| 3029 | static int ns_parse_mac(char *mac, unsigned char *esi) |
| 3030 | { |
| 3031 | int i, j; |
| 3032 | short byte1, byte0; |
| 3033 | |
| 3034 | if (mac == NULL || esi == NULL) |
| 3035 | return -1; |
| 3036 | j = 0; |
| 3037 | for (i = 0; i < 6; i++) |
| 3038 | { |
| 3039 | if ((byte1 = ns_h2i(mac[j++])) < 0) |
| 3040 | return -1; |
| 3041 | if ((byte0 = ns_h2i(mac[j++])) < 0) |
| 3042 | return -1; |
| 3043 | esi[i] = (unsigned char) (byte1 * 16 + byte0); |
| 3044 | if (i < 5) |
| 3045 | { |
| 3046 | if (mac[j++] != ':') |
| 3047 | return -1; |
| 3048 | } |
| 3049 | } |
| 3050 | return 0; |
| 3051 | } |
| 3052 | |
| 3053 | |
| 3054 | |
| 3055 | static short ns_h2i(char c) |
| 3056 | { |
| 3057 | if (c >= '0' && c <= '9') |
| 3058 | return (short) (c - '0'); |
| 3059 | if (c >= 'A' && c <= 'F') |
| 3060 | return (short) (c - 'A' + 10); |
| 3061 | if (c >= 'a' && c <= 'f') |
| 3062 | return (short) (c - 'a' + 10); |
| 3063 | return -1; |
| 3064 | } |
| 3065 | |
| 3066 | |
| 3067 | |
| 3068 | static void ns_phy_put(struct atm_dev *dev, unsigned char value, |
| 3069 | unsigned long addr) |
| 3070 | { |
| 3071 | ns_dev *card; |
| 3072 | unsigned long flags; |
| 3073 | |
| 3074 | card = dev->dev_data; |
| 3075 | ns_grab_res_lock(card, flags); |
| 3076 | while(CMD_BUSY(card)); |
| 3077 | writel((unsigned long) value, card->membase + DR0); |
| 3078 | writel(NS_CMD_WRITE_UTILITY | 0x00000200 | (addr & 0x000000FF), |
| 3079 | card->membase + CMD); |
| 3080 | spin_unlock_irqrestore(&card->res_lock, flags); |
| 3081 | } |
| 3082 | |
| 3083 | |
| 3084 | |
| 3085 | static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr) |
| 3086 | { |
| 3087 | ns_dev *card; |
| 3088 | unsigned long flags; |
| 3089 | unsigned long data; |
| 3090 | |
| 3091 | card = dev->dev_data; |
| 3092 | ns_grab_res_lock(card, flags); |
| 3093 | while(CMD_BUSY(card)); |
| 3094 | writel(NS_CMD_READ_UTILITY | 0x00000200 | (addr & 0x000000FF), |
| 3095 | card->membase + CMD); |
| 3096 | while(CMD_BUSY(card)); |
| 3097 | data = readl(card->membase + DR0) & 0x000000FF; |
| 3098 | spin_unlock_irqrestore(&card->res_lock, flags); |
| 3099 | return (unsigned char) data; |
| 3100 | } |
| 3101 | |
| 3102 | |
| 3103 | |
| 3104 | module_init(nicstar_init); |
| 3105 | module_exit(nicstar_cleanup); |