1 /******************************************************************************
5 * Device driver supporting CBR for IDT 77201/77211 "NICStAR" based cards.
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.
14 * Author: Rui Prior (rprior@inescn.pt)
15 * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999
21 ******************************************************************************/
24 /**** IMPORTANT INFORMATION ***************************************************
26 * There are currently three types of spinlocks:
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.)
32 * These must NEVER be grabbed in reverse order.
34 ******************************************************************************/
36 /* Header files ***************************************************************/
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>
54 #include <asm/uaccess.h>
55 #include <asm/atomic.h>
57 #include "nicstarmac.h"
58 #ifdef CONFIG_ATM_NICSTAR_USE_SUNI
60 #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */
61 #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105
63 #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */
65 #if BITS_PER_LONG != 32
66 # error FIXME: this driver requires a 32-bit platform
69 /* Additional code ************************************************************/
71 #include "nicstarmac.c"
74 /* Configurable parameters ****************************************************/
82 #undef NS_USE_DESTRUCTORS /* For now keep this undefined unless you know
83 you're going to use only raw ATM */
86 /* Do not touch these *********************************************************/
89 #define TXPRINTK(args...) printk(args)
91 #define TXPRINTK(args...)
95 #define RXPRINTK(args...) printk(args)
97 #define RXPRINTK(args...)
101 #define PRINTK(args...) printk(args)
103 #define PRINTK(args...)
104 #endif /* GENERAL_DEBUG */
107 #define XPRINTK(args...) printk(args)
109 #define XPRINTK(args...)
110 #endif /* EXTRA_DEBUG */
113 /* Macros *********************************************************************/
115 #define MAX(a,b) ((a) > (b) ? (a) : (b))
116 #define MIN(a,b) ((a) < (b) ? (a) : (b))
118 #define CMD_BUSY(card) (readl((card)->membase + STAT) & NS_STAT_CMDBZ)
120 #define NS_DELAY mdelay(1)
122 #define ALIGN_BUS_ADDR(addr, alignment) \
123 ((((u32) (addr)) + (((u32) (alignment)) - 1)) & ~(((u32) (alignment)) - 1))
124 #define ALIGN_ADDRESS(addr, alignment) \
125 bus_to_virt(ALIGN_BUS_ADDR(virt_to_bus(addr), alignment))
130 #define ATM_SKB(s) (&(s)->atm)
133 /* Spinlock debugging stuff */
134 #ifdef NS_DEBUG_SPINLOCKS /* See nicstar.h */
135 #define ns_grab_int_lock(card,flags) \
137 unsigned long nsdsf, nsdsf2; \
138 local_irq_save(flags); \
139 save_flags(nsdsf); cli();\
140 if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \
141 (flags)&(1<<9)?"en":"dis"); \
142 if (spin_is_locked(&(card)->int_lock) && \
143 (card)->cpu_int == smp_processor_id()) { \
144 printk("nicstar.c: line %d (cpu %d) int_lock already locked at line %d (cpu %d)\n", \
145 __LINE__, smp_processor_id(), (card)->has_int_lock, \
147 printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
149 if (spin_is_locked(&(card)->res_lock) && \
150 (card)->cpu_res == smp_processor_id()) { \
151 printk("nicstar.c: line %d (cpu %d) res_lock locked at line %d (cpu %d)(trying int)\n", \
152 __LINE__, smp_processor_id(), (card)->has_res_lock, \
154 printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
156 spin_lock_irq(&(card)->int_lock); \
157 (card)->has_int_lock = __LINE__; \
158 (card)->cpu_int = smp_processor_id(); \
159 restore_flags(nsdsf); } while (0)
160 #define ns_grab_res_lock(card,flags) \
162 unsigned long nsdsf, nsdsf2; \
163 local_irq_save(flags); \
164 save_flags(nsdsf); cli();\
165 if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \
166 (flags)&(1<<9)?"en":"dis"); \
167 if (spin_is_locked(&(card)->res_lock) && \
168 (card)->cpu_res == smp_processor_id()) { \
169 printk("nicstar.c: line %d (cpu %d) res_lock already locked at line %d (cpu %d)\n", \
170 __LINE__, smp_processor_id(), (card)->has_res_lock, \
172 printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
174 spin_lock_irq(&(card)->res_lock); \
175 (card)->has_res_lock = __LINE__; \
176 (card)->cpu_res = smp_processor_id(); \
177 restore_flags(nsdsf); } while (0)
178 #define ns_grab_scq_lock(card,scq,flags) \
180 unsigned long nsdsf, nsdsf2; \
181 local_irq_save(flags); \
182 save_flags(nsdsf); cli();\
183 if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \
184 (flags)&(1<<9)?"en":"dis"); \
185 if (spin_is_locked(&(scq)->lock) && \
186 (scq)->cpu_lock == smp_processor_id()) { \
187 printk("nicstar.c: line %d (cpu %d) this scq_lock already locked at line %d (cpu %d)\n", \
188 __LINE__, smp_processor_id(), (scq)->has_lock, \
190 printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
192 if (spin_is_locked(&(card)->res_lock) && \
193 (card)->cpu_res == smp_processor_id()) { \
194 printk("nicstar.c: line %d (cpu %d) res_lock locked at line %d (cpu %d)(trying scq)\n", \
195 __LINE__, smp_processor_id(), (card)->has_res_lock, \
197 printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
199 spin_lock_irq(&(scq)->lock); \
200 (scq)->has_lock = __LINE__; \
201 (scq)->cpu_lock = smp_processor_id(); \
202 restore_flags(nsdsf); } while (0)
203 #else /* !NS_DEBUG_SPINLOCKS */
204 #define ns_grab_int_lock(card,flags) \
205 spin_lock_irqsave(&(card)->int_lock,(flags))
206 #define ns_grab_res_lock(card,flags) \
207 spin_lock_irqsave(&(card)->res_lock,(flags))
208 #define ns_grab_scq_lock(card,scq,flags) \
209 spin_lock_irqsave(&(scq)->lock,flags)
210 #endif /* NS_DEBUG_SPINLOCKS */
213 /* Function declarations ******************************************************/
215 static u32 ns_read_sram(ns_dev *card, u32 sram_address);
216 static void ns_write_sram(ns_dev *card, u32 sram_address, u32 *value, int count);
217 static int __init ns_init_card(int i, struct pci_dev *pcidev);
218 static void __init ns_init_card_error(ns_dev *card, int error);
219 static scq_info *get_scq(int size, u32 scd);
220 static void free_scq(scq_info *scq, struct atm_vcc *vcc);
221 static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1,
222 u32 handle2, u32 addr2);
223 static void ns_irq_handler(int irq, void *dev_id, struct pt_regs *regs);
224 static int ns_open(struct atm_vcc *vcc, short vpi, int vci);
225 static void ns_close(struct atm_vcc *vcc);
226 static void fill_tst(ns_dev *card, int n, vc_map *vc);
227 static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb);
228 static int push_scqe(ns_dev *card, vc_map *vc, scq_info *scq, ns_scqe *tbd,
229 struct sk_buff *skb);
230 static void process_tsq(ns_dev *card);
231 static void drain_scq(ns_dev *card, scq_info *scq, int pos);
232 static void process_rsq(ns_dev *card);
233 static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe);
234 #ifdef NS_USE_DESTRUCTORS
235 static void ns_sb_destructor(struct sk_buff *sb);
236 static void ns_lb_destructor(struct sk_buff *lb);
237 static void ns_hb_destructor(struct sk_buff *hb);
238 #endif /* NS_USE_DESTRUCTORS */
239 static void recycle_rx_buf(ns_dev *card, struct sk_buff *skb);
240 static void recycle_iovec_rx_bufs(ns_dev *card, struct iovec *iov, int count);
241 static void recycle_iov_buf(ns_dev *card, struct sk_buff *iovb);
242 static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb);
243 static void dequeue_lg_buf(ns_dev *card, struct sk_buff *lb);
244 static int ns_proc_read(struct atm_dev *dev, loff_t *pos, char *page);
245 static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void *arg);
246 static void which_list(ns_dev *card, struct sk_buff *skb);
247 static void ns_poll(unsigned long arg);
248 static int ns_parse_mac(char *mac, unsigned char *esi);
249 static short ns_h2i(char c);
250 static void ns_phy_put(struct atm_dev *dev, unsigned char value,
252 static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr);
256 /* Global variables ***********************************************************/
258 static struct ns_dev *cards[NS_MAX_CARDS];
259 static unsigned num_cards;
260 static struct atmdev_ops atm_ops =
268 proc_read: ns_proc_read,
271 static struct timer_list ns_timer;
272 static char *mac[NS_MAX_CARDS];
273 MODULE_PARM(mac, "1-" __MODULE_STRING(NS_MAX_CARDS) "s");
274 MODULE_LICENSE("GPL");
277 /* Functions*******************************************************************/
281 int __init init_module(void)
284 unsigned error = 0; /* Initialized to remove compile warning */
285 struct pci_dev *pcidev;
287 XPRINTK("nicstar: init_module() called.\n");
290 printk("nicstar: no PCI subsystem found.\n");
294 for(i = 0; i < NS_MAX_CARDS; i++)
298 for(i = 0; i < NS_MAX_CARDS; i++)
300 if ((pcidev = pci_find_device(PCI_VENDOR_ID_IDT,
301 PCI_DEVICE_ID_IDT_IDT77201,
305 error = ns_init_card(i, pcidev);
307 cards[i--] = NULL; /* Try to find another card but don't increment index */
314 printk("nicstar: no cards found.\n");
320 TXPRINTK("nicstar: TX debug enabled.\n");
321 RXPRINTK("nicstar: RX debug enabled.\n");
322 PRINTK("nicstar: General debug enabled.\n");
324 printk("nicstar: using PHY loopback.\n");
325 #endif /* PHY_LOOPBACK */
326 XPRINTK("nicstar: init_module() returned.\n");
328 init_timer(&ns_timer);
329 ns_timer.expires = jiffies + NS_POLL_PERIOD;
331 ns_timer.function = ns_poll;
332 add_timer(&ns_timer);
338 void cleanup_module(void)
341 unsigned short pci_command;
344 struct sk_buff *iovb;
348 XPRINTK("nicstar: cleanup_module() called.\n");
351 printk("nicstar: module in use, remove delayed.\n");
353 del_timer(&ns_timer);
355 for (i = 0; i < NS_MAX_CARDS; i++)
357 if (cards[i] == NULL)
362 #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105
363 if (card->max_pcr == ATM_25_PCR) {
364 idt77105_stop(card->atmdev);
366 #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */
368 /* Stop everything */
369 writel(0x00000000, card->membase + CFG);
371 /* De-register device */
372 atm_dev_deregister(card->atmdev);
374 /* Disable memory mapping and busmastering */
375 if (pci_read_config_word(card->pcidev, PCI_COMMAND, &pci_command) != 0)
377 printk("nicstar%d: can't read PCI_COMMAND.\n", i);
379 pci_command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
380 if (pci_write_config_word(card->pcidev, PCI_COMMAND, pci_command) != 0)
382 printk("nicstar%d: can't write PCI_COMMAND.\n", i);
385 /* Free up resources */
387 PRINTK("nicstar%d: freeing %d huge buffers.\n", i, card->hbpool.count);
388 while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL)
390 dev_kfree_skb_any(hb);
393 PRINTK("nicstar%d: %d huge buffers freed.\n", i, j);
395 PRINTK("nicstar%d: freeing %d iovec buffers.\n", i, card->iovpool.count);
396 while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL)
398 dev_kfree_skb_any(iovb);
401 PRINTK("nicstar%d: %d iovec buffers freed.\n", i, j);
402 while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL)
403 dev_kfree_skb_any(lb);
404 while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL)
405 dev_kfree_skb_any(sb);
406 free_scq(card->scq0, NULL);
407 for (j = 0; j < NS_FRSCD_NUM; j++)
409 if (card->scd2vc[j] != NULL)
410 free_scq(card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc);
412 kfree(card->rsq.org);
413 kfree(card->tsq.org);
414 free_irq(card->pcidev->irq, card);
415 iounmap((void *) card->membase);
419 XPRINTK("nicstar: cleanup_module() returned.\n");
425 int __init nicstar_detect(void)
428 unsigned error = 0; /* Initialized to remove compile warning */
429 struct pci_dev *pcidev;
433 printk("nicstar: no PCI subsystem found.\n");
437 for(i = 0; i < NS_MAX_CARDS; i++)
441 for(i = 0; i < NS_MAX_CARDS; i++)
443 if ((pcidev = pci_find_device(PCI_VENDOR_ID_IDT,
444 PCI_DEVICE_ID_IDT_IDT77201,
448 error = ns_init_card(i, pcidev);
450 cards[i--] = NULL; /* Try to find another card but don't increment index */
456 TXPRINTK("nicstar: TX debug enabled.\n");
457 RXPRINTK("nicstar: RX debug enabled.\n");
458 PRINTK("nicstar: General debug enabled.\n");
460 printk("nicstar: using PHY loopback.\n");
461 #endif /* PHY_LOOPBACK */
462 XPRINTK("nicstar: init_module() returned.\n");
464 init_timer(&ns_timer);
465 ns_timer.expires = jiffies + NS_POLL_PERIOD;
467 ns_timer.function = ns_poll;
468 add_timer(&ns_timer);
476 static u32 ns_read_sram(ns_dev *card, u32 sram_address)
481 sram_address &= 0x0007FFFC; /* address must be dword aligned */
482 sram_address |= 0x50000000; /* SRAM read command */
483 ns_grab_res_lock(card, flags);
484 while (CMD_BUSY(card));
485 writel(sram_address, card->membase + CMD);
486 while (CMD_BUSY(card));
487 data = readl(card->membase + DR0);
488 spin_unlock_irqrestore(&card->res_lock, flags);
494 static void ns_write_sram(ns_dev *card, u32 sram_address, u32 *value, int count)
498 count--; /* count range now is 0..3 instead of 1..4 */
500 c <<= 2; /* to use increments of 4 */
501 ns_grab_res_lock(card, flags);
502 while (CMD_BUSY(card));
503 for (i = 0; i <= c; i += 4)
504 writel(*(value++), card->membase + i);
505 /* Note: DR# registers are the first 4 dwords in nicstar's memspace,
506 so card->membase + DR0 == card->membase */
508 sram_address &= 0x0007FFFC;
509 sram_address |= (0x40000000 | count);
510 writel(sram_address, card->membase + CMD);
511 spin_unlock_irqrestore(&card->res_lock, flags);
515 static int __init ns_init_card(int i, struct pci_dev *pcidev)
518 struct ns_dev *card = NULL;
519 unsigned short pci_command;
520 unsigned char pci_latency;
529 if (pci_enable_device(pcidev))
531 printk("nicstar%d: can't enable PCI device\n", i);
533 ns_init_card_error(card, error);
537 if ((card = kmalloc(sizeof(ns_dev), GFP_KERNEL)) == NULL)
539 printk("nicstar%d: can't allocate memory for device structure.\n", i);
541 ns_init_card_error(card, error);
545 spin_lock_init(&card->int_lock);
546 spin_lock_init(&card->res_lock);
550 card->pcidev = pcidev;
551 card->membase = pci_resource_start(pcidev, 1);
553 /* Compensate for different memory map between host CPU and PCI bus.
554 Shouldn't we use a macro for this? */
555 card->membase += KERNELBASE;
556 #endif /* __powerpc__ */
557 card->membase = (unsigned long) ioremap(card->membase, NS_IOREMAP_SIZE);
558 if (card->membase == 0)
560 printk("nicstar%d: can't ioremap() membase.\n",i);
562 ns_init_card_error(card, error);
565 PRINTK("nicstar%d: membase at 0x%x.\n", i, card->membase);
567 if (pci_read_config_word(pcidev, PCI_COMMAND, &pci_command) != 0)
569 printk("nicstar%d: can't read PCI_COMMAND.\n", i);
571 ns_init_card_error(card, error);
574 pci_command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
575 if (pci_write_config_word(pcidev, PCI_COMMAND, pci_command) != 0)
577 printk("nicstar%d: can't write PCI_COMMAND.\n", i);
579 ns_init_card_error(card, error);
583 if (pci_read_config_byte(pcidev, PCI_LATENCY_TIMER, &pci_latency) != 0)
585 printk("nicstar%d: can't read PCI latency timer.\n", i);
587 ns_init_card_error(card, error);
590 #ifdef NS_PCI_LATENCY
591 if (pci_latency < NS_PCI_LATENCY)
593 PRINTK("nicstar%d: setting PCI latency timer to %d.\n", i, NS_PCI_LATENCY);
594 for (j = 1; j < 4; j++)
596 if (pci_write_config_byte(pcidev, PCI_LATENCY_TIMER, NS_PCI_LATENCY) != 0)
601 printk("nicstar%d: can't set PCI latency timer to %d.\n", i, NS_PCI_LATENCY);
603 ns_init_card_error(card, error);
607 #endif /* NS_PCI_LATENCY */
609 /* Clear timer overflow */
610 data = readl(card->membase + STAT);
611 if (data & NS_STAT_TMROF)
612 writel(NS_STAT_TMROF, card->membase + STAT);
615 writel(NS_CFG_SWRST, card->membase + CFG);
617 writel(0x00000000, card->membase + CFG);
620 writel(0x00000008, card->membase + GP);
622 writel(0x00000001, card->membase + GP);
624 while (CMD_BUSY(card));
625 writel(NS_CMD_WRITE_UTILITY | 0x00000100, card->membase + CMD); /* Sync UTOPIA with SAR clock */
628 /* Detect PHY type */
629 while (CMD_BUSY(card));
630 writel(NS_CMD_READ_UTILITY | 0x00000200, card->membase + CMD);
631 while (CMD_BUSY(card));
632 data = readl(card->membase + DR0);
635 printk("nicstar%d: PHY seems to be 25 Mbps.\n", i);
636 card->max_pcr = ATM_25_PCR;
637 while(CMD_BUSY(card));
638 writel(0x00000008, card->membase + DR0);
639 writel(NS_CMD_WRITE_UTILITY | 0x00000200, card->membase + CMD);
640 /* Clear an eventual pending interrupt */
641 writel(NS_STAT_SFBQF, card->membase + STAT);
643 while(CMD_BUSY(card));
644 writel(0x00000022, card->membase + DR0);
645 writel(NS_CMD_WRITE_UTILITY | 0x00000202, card->membase + CMD);
646 #endif /* PHY_LOOPBACK */
650 printk("nicstar%d: PHY seems to be 155 Mbps.\n", i);
651 card->max_pcr = ATM_OC3_PCR;
653 while(CMD_BUSY(card));
654 writel(0x00000002, card->membase + DR0);
655 writel(NS_CMD_WRITE_UTILITY | 0x00000205, card->membase + CMD);
656 #endif /* PHY_LOOPBACK */
659 printk("nicstar%d: unknown PHY type (0x%08X).\n", i, data);
661 ns_init_card_error(card, error);
664 writel(0x00000000, card->membase + GP);
666 /* Determine SRAM size */
668 ns_write_sram(card, 0x1C003, &data, 1);
670 ns_write_sram(card, 0x14003, &data, 1);
671 if (ns_read_sram(card, 0x14003) == 0x89ABCDEF &&
672 ns_read_sram(card, 0x1C003) == 0x76543210)
673 card->sram_size = 128;
675 card->sram_size = 32;
676 PRINTK("nicstar%d: %dK x 32bit SRAM size.\n", i, card->sram_size);
678 card->rct_size = NS_MAX_RCTSIZE;
680 #if (NS_MAX_RCTSIZE == 4096)
681 if (card->sram_size == 128)
682 printk("nicstar%d: limiting maximum VCI. See NS_MAX_RCTSIZE in nicstar.h\n", i);
683 #elif (NS_MAX_RCTSIZE == 16384)
684 if (card->sram_size == 32)
686 printk("nicstar%d: wasting memory. See NS_MAX_RCTSIZE in nicstar.h\n", i);
687 card->rct_size = 4096;
690 #error NS_MAX_RCTSIZE must be either 4096 or 16384 in nicstar.c
693 card->vpibits = NS_VPIBITS;
694 if (card->rct_size == 4096)
695 card->vcibits = 12 - NS_VPIBITS;
696 else /* card->rct_size == 16384 */
697 card->vcibits = 14 - NS_VPIBITS;
699 /* Initialize the nicstar eeprom/eprom stuff, for the MAC addr */
701 nicstar_init_eprom(card->membase);
703 if (request_irq(pcidev->irq, &ns_irq_handler, SA_INTERRUPT | SA_SHIRQ, "nicstar", card) != 0)
705 printk("nicstar%d: can't allocate IRQ %d.\n", i, pcidev->irq);
707 ns_init_card_error(card, error);
711 /* Set the VPI/VCI MSb mask to zero so we can receive OAM cells */
712 writel(0x00000000, card->membase + VPM);
715 card->tsq.org = kmalloc(NS_TSQSIZE + NS_TSQ_ALIGNMENT, GFP_KERNEL);
716 if (card->tsq.org == NULL)
718 printk("nicstar%d: can't allocate TSQ.\n", i);
720 ns_init_card_error(card, error);
723 card->tsq.base = (ns_tsi *) ALIGN_ADDRESS(card->tsq.org, NS_TSQ_ALIGNMENT);
724 card->tsq.next = card->tsq.base;
725 card->tsq.last = card->tsq.base + (NS_TSQ_NUM_ENTRIES - 1);
726 for (j = 0; j < NS_TSQ_NUM_ENTRIES; j++)
727 ns_tsi_init(card->tsq.base + j);
728 writel(0x00000000, card->membase + TSQH);
729 writel((u32) virt_to_bus(card->tsq.base), card->membase + TSQB);
730 PRINTK("nicstar%d: TSQ base at 0x%x 0x%x 0x%x.\n", i, (u32) card->tsq.base,
731 (u32) virt_to_bus(card->tsq.base), readl(card->membase + TSQB));
734 card->rsq.org = kmalloc(NS_RSQSIZE + NS_RSQ_ALIGNMENT, GFP_KERNEL);
735 if (card->rsq.org == NULL)
737 printk("nicstar%d: can't allocate RSQ.\n", i);
739 ns_init_card_error(card, error);
742 card->rsq.base = (ns_rsqe *) ALIGN_ADDRESS(card->rsq.org, NS_RSQ_ALIGNMENT);
743 card->rsq.next = card->rsq.base;
744 card->rsq.last = card->rsq.base + (NS_RSQ_NUM_ENTRIES - 1);
745 for (j = 0; j < NS_RSQ_NUM_ENTRIES; j++)
746 ns_rsqe_init(card->rsq.base + j);
747 writel(0x00000000, card->membase + RSQH);
748 writel((u32) virt_to_bus(card->rsq.base), card->membase + RSQB);
749 PRINTK("nicstar%d: RSQ base at 0x%x.\n", i, (u32) card->rsq.base);
751 /* Initialize SCQ0, the only VBR SCQ used */
752 card->scq1 = (scq_info *) NULL;
753 card->scq2 = (scq_info *) NULL;
754 card->scq0 = get_scq(VBR_SCQSIZE, NS_VRSCD0);
755 if (card->scq0 == (scq_info *) NULL)
757 printk("nicstar%d: can't get SCQ0.\n", i);
759 ns_init_card_error(card, error);
762 u32d[0] = (u32) virt_to_bus(card->scq0->base);
763 u32d[1] = (u32) 0x00000000;
764 u32d[2] = (u32) 0xffffffff;
765 u32d[3] = (u32) 0x00000000;
766 ns_write_sram(card, NS_VRSCD0, u32d, 4);
767 ns_write_sram(card, NS_VRSCD1, u32d, 4); /* These last two won't be used */
768 ns_write_sram(card, NS_VRSCD2, u32d, 4); /* but are initialized, just in case... */
769 card->scq0->scd = NS_VRSCD0;
770 PRINTK("nicstar%d: VBR-SCQ0 base at 0x%x.\n", i, (u32) card->scq0->base);
772 /* Initialize TSTs */
773 card->tst_addr = NS_TST0;
774 card->tst_free_entries = NS_TST_NUM_ENTRIES;
775 data = NS_TST_OPCODE_VARIABLE;
776 for (j = 0; j < NS_TST_NUM_ENTRIES; j++)
777 ns_write_sram(card, NS_TST0 + j, &data, 1);
778 data = ns_tste_make(NS_TST_OPCODE_END, NS_TST0);
779 ns_write_sram(card, NS_TST0 + NS_TST_NUM_ENTRIES, &data, 1);
780 for (j = 0; j < NS_TST_NUM_ENTRIES; j++)
781 ns_write_sram(card, NS_TST1 + j, &data, 1);
782 data = ns_tste_make(NS_TST_OPCODE_END, NS_TST1);
783 ns_write_sram(card, NS_TST1 + NS_TST_NUM_ENTRIES, &data, 1);
784 for (j = 0; j < NS_TST_NUM_ENTRIES; j++)
785 card->tste2vc[j] = NULL;
786 writel(NS_TST0 << 2, card->membase + TSTB);
789 /* Initialize RCT. AAL type is set on opening the VC. */
791 u32d[0] = NS_RCTE_RAWCELLINTEN;
793 u32d[0] = 0x00000000;
794 #endif /* RCQ_SUPPORT */
795 u32d[1] = 0x00000000;
796 u32d[2] = 0x00000000;
797 u32d[3] = 0xFFFFFFFF;
798 for (j = 0; j < card->rct_size; j++)
799 ns_write_sram(card, j * 4, u32d, 4);
801 memset(card->vcmap, 0, NS_MAX_RCTSIZE * sizeof(vc_map));
803 for (j = 0; j < NS_FRSCD_NUM; j++)
804 card->scd2vc[j] = NULL;
806 /* Initialize buffer levels */
807 card->sbnr.min = MIN_SB;
808 card->sbnr.init = NUM_SB;
809 card->sbnr.max = MAX_SB;
810 card->lbnr.min = MIN_LB;
811 card->lbnr.init = NUM_LB;
812 card->lbnr.max = MAX_LB;
813 card->iovnr.min = MIN_IOVB;
814 card->iovnr.init = NUM_IOVB;
815 card->iovnr.max = MAX_IOVB;
816 card->hbnr.min = MIN_HB;
817 card->hbnr.init = NUM_HB;
818 card->hbnr.max = MAX_HB;
820 card->sm_handle = 0x00000000;
821 card->sm_addr = 0x00000000;
822 card->lg_handle = 0x00000000;
823 card->lg_addr = 0x00000000;
825 card->efbie = 1; /* To prevent push_rxbufs from enabling the interrupt */
827 /* Pre-allocate some huge buffers */
828 skb_queue_head_init(&card->hbpool.queue);
829 card->hbpool.count = 0;
830 for (j = 0; j < NUM_HB; j++)
833 hb = alloc_skb(NS_HBUFSIZE, GFP_KERNEL);
836 printk("nicstar%d: can't allocate %dth of %d huge buffers.\n",
839 ns_init_card_error(card, error);
842 skb_queue_tail(&card->hbpool.queue, hb);
843 card->hbpool.count++;
847 /* Allocate large buffers */
848 skb_queue_head_init(&card->lbpool.queue);
849 card->lbpool.count = 0; /* Not used */
850 for (j = 0; j < NUM_LB; j++)
853 lb = alloc_skb(NS_LGSKBSIZE, GFP_KERNEL);
856 printk("nicstar%d: can't allocate %dth of %d large buffers.\n",
859 ns_init_card_error(card, error);
862 skb_queue_tail(&card->lbpool.queue, lb);
863 skb_reserve(lb, NS_SMBUFSIZE);
864 push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0);
865 /* Due to the implementation of push_rxbufs() this is 1, not 0 */
869 card->rawch = (u32) virt_to_bus(lb->data);
872 /* Test for strange behaviour which leads to crashes */
873 if ((bcount = ns_stat_lfbqc_get(readl(card->membase + STAT))) < card->lbnr.min)
875 printk("nicstar%d: Strange... Just allocated %d large buffers and lfbqc = %d.\n",
878 ns_init_card_error(card, error);
883 /* Allocate small buffers */
884 skb_queue_head_init(&card->sbpool.queue);
885 card->sbpool.count = 0; /* Not used */
886 for (j = 0; j < NUM_SB; j++)
889 sb = alloc_skb(NS_SMSKBSIZE, GFP_KERNEL);
892 printk("nicstar%d: can't allocate %dth of %d small buffers.\n",
895 ns_init_card_error(card, error);
898 skb_queue_tail(&card->sbpool.queue, sb);
899 skb_reserve(sb, NS_AAL0_HEADER);
900 push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0);
902 /* Test for strange behaviour which leads to crashes */
903 if ((bcount = ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min)
905 printk("nicstar%d: Strange... Just allocated %d small buffers and sfbqc = %d.\n",
908 ns_init_card_error(card, error);
913 /* Allocate iovec buffers */
914 skb_queue_head_init(&card->iovpool.queue);
915 card->iovpool.count = 0;
916 for (j = 0; j < NUM_IOVB; j++)
918 struct sk_buff *iovb;
919 iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL);
922 printk("nicstar%d: can't allocate %dth of %d iovec buffers.\n",
925 ns_init_card_error(card, error);
928 skb_queue_tail(&card->iovpool.queue, iovb);
929 card->iovpool.count++;
934 /* Configure NICStAR */
935 if (card->rct_size == 4096)
936 ns_cfg_rctsize = NS_CFG_RCTSIZE_4096_ENTRIES;
937 else /* (card->rct_size == 16384) */
938 ns_cfg_rctsize = NS_CFG_RCTSIZE_16384_ENTRIES;
942 /* Register device */
943 card->atmdev = atm_dev_register("nicstar", &atm_ops, -1, NULL);
944 if (card->atmdev == NULL)
946 printk("nicstar%d: can't register device.\n", i);
948 ns_init_card_error(card, error);
952 if (ns_parse_mac(mac[i], card->atmdev->esi))
953 nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET,
954 card->atmdev->esi, 6);
956 printk("nicstar%d: MAC address %02X:%02X:%02X:%02X:%02X:%02X\n", i,
957 card->atmdev->esi[0], card->atmdev->esi[1], card->atmdev->esi[2],
958 card->atmdev->esi[3], card->atmdev->esi[4], card->atmdev->esi[5]);
960 card->atmdev->dev_data = card;
961 card->atmdev->ci_range.vpi_bits = card->vpibits;
962 card->atmdev->ci_range.vci_bits = card->vcibits;
963 card->atmdev->link_rate = card->max_pcr;
964 card->atmdev->phy = NULL;
966 #ifdef CONFIG_ATM_NICSTAR_USE_SUNI
967 if (card->max_pcr == ATM_OC3_PCR) {
968 suni_init(card->atmdev);
971 /* Can't remove the nicstar driver or the suni driver would oops */
973 #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */
975 #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105
976 if (card->max_pcr == ATM_25_PCR) {
977 idt77105_init(card->atmdev);
978 /* Note that for the IDT77105 PHY we don't need the awful
979 * module count hack that the SUNI needs because we can
980 * stop the '105 when the nicstar module is cleaned up.
983 #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */
985 if (card->atmdev->phy && card->atmdev->phy->start)
986 card->atmdev->phy->start(card->atmdev);
988 writel(NS_CFG_RXPATH |
995 NS_CFG_RXINT_NODELAY |
996 NS_CFG_RAWIE | /* Only enabled if RCQ_SUPPORT */
1000 NS_CFG_TSQFIE_OPT | /* Only enabled if ENABLE_TSQFIE */
1002 card->membase + CFG);
1011 static void __init ns_init_card_error(ns_dev *card, int error)
1015 writel(0x00000000, card->membase + CFG);
1019 struct sk_buff *iovb;
1020 while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL)
1021 dev_kfree_skb_any(iovb);
1026 while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL)
1027 dev_kfree_skb_any(sb);
1028 free_scq(card->scq0, NULL);
1033 while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL)
1034 dev_kfree_skb_any(lb);
1039 while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL)
1040 dev_kfree_skb_any(hb);
1044 kfree(card->rsq.org);
1048 kfree(card->tsq.org);
1052 free_irq(card->pcidev->irq, card);
1056 iounmap((void *) card->membase);
1066 static scq_info *get_scq(int size, u32 scd)
1071 if (size != VBR_SCQSIZE && size != CBR_SCQSIZE)
1072 return (scq_info *) NULL;
1074 scq = (scq_info *) kmalloc(sizeof(scq_info), GFP_KERNEL);
1075 if (scq == (scq_info *) NULL)
1076 return (scq_info *) NULL;
1077 scq->org = kmalloc(2 * size, GFP_KERNEL);
1078 if (scq->org == NULL)
1081 return (scq_info *) NULL;
1083 scq->skb = (struct sk_buff **) kmalloc(sizeof(struct sk_buff *) *
1084 (size / NS_SCQE_SIZE), GFP_KERNEL);
1085 if (scq->skb == (struct sk_buff **) NULL)
1089 return (scq_info *) NULL;
1091 scq->num_entries = size / NS_SCQE_SIZE;
1092 scq->base = (ns_scqe *) ALIGN_ADDRESS(scq->org, size);
1093 scq->next = scq->base;
1094 scq->last = scq->base + (scq->num_entries - 1);
1095 scq->tail = scq->last;
1097 scq->num_entries = size / NS_SCQE_SIZE;
1099 init_waitqueue_head(&scq->scqfull_waitq);
1101 spin_lock_init(&scq->lock);
1103 for (i = 0; i < scq->num_entries; i++)
1111 /* For variable rate SCQ vcc must be NULL */
1112 static void free_scq(scq_info *scq, struct atm_vcc *vcc)
1116 if (scq->num_entries == VBR_SCQ_NUM_ENTRIES)
1117 for (i = 0; i < scq->num_entries; i++)
1119 if (scq->skb[i] != NULL)
1121 vcc = ATM_SKB(scq->skb[i])->vcc;
1122 if (vcc->pop != NULL)
1123 vcc->pop(vcc, scq->skb[i]);
1125 dev_kfree_skb_any(scq->skb[i]);
1128 else /* vcc must be != NULL */
1132 printk("nicstar: free_scq() called with vcc == NULL for fixed rate scq.");
1133 for (i = 0; i < scq->num_entries; i++)
1134 dev_kfree_skb_any(scq->skb[i]);
1137 for (i = 0; i < scq->num_entries; i++)
1139 if (scq->skb[i] != NULL)
1141 if (vcc->pop != NULL)
1142 vcc->pop(vcc, scq->skb[i]);
1144 dev_kfree_skb_any(scq->skb[i]);
1155 /* The handles passed must be pointers to the sk_buff containing the small
1156 or large buffer(s) cast to u32. */
1157 static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1,
1158 u32 handle2, u32 addr2)
1161 unsigned long flags;
1164 #ifdef GENERAL_DEBUG
1166 printk("nicstar%d: push_rxbufs called with addr1 = 0.\n", card->index);
1167 #endif /* GENERAL_DEBUG */
1169 stat = readl(card->membase + STAT);
1170 card->sbfqc = ns_stat_sfbqc_get(stat);
1171 card->lbfqc = ns_stat_lfbqc_get(stat);
1178 addr2 = card->sm_addr;
1179 handle2 = card->sm_handle;
1180 card->sm_addr = 0x00000000;
1181 card->sm_handle = 0x00000000;
1183 else /* (!sm_addr) */
1185 card->sm_addr = addr1;
1186 card->sm_handle = handle1;
1190 else /* type == BUF_LG */
1196 addr2 = card->lg_addr;
1197 handle2 = card->lg_handle;
1198 card->lg_addr = 0x00000000;
1199 card->lg_handle = 0x00000000;
1201 else /* (!lg_addr) */
1203 card->lg_addr = addr1;
1204 card->lg_handle = handle1;
1213 if (card->sbfqc >= card->sbnr.max)
1215 skb_unlink((struct sk_buff *) handle1);
1216 dev_kfree_skb_any((struct sk_buff *) handle1);
1217 skb_unlink((struct sk_buff *) handle2);
1218 dev_kfree_skb_any((struct sk_buff *) handle2);
1224 else /* (type == BUF_LG) */
1226 if (card->lbfqc >= card->lbnr.max)
1228 skb_unlink((struct sk_buff *) handle1);
1229 dev_kfree_skb_any((struct sk_buff *) handle1);
1230 skb_unlink((struct sk_buff *) handle2);
1231 dev_kfree_skb_any((struct sk_buff *) handle2);
1238 ns_grab_res_lock(card, flags);
1240 while (CMD_BUSY(card));
1241 writel(addr2, card->membase + DR3);
1242 writel(handle2, card->membase + DR2);
1243 writel(addr1, card->membase + DR1);
1244 writel(handle1, card->membase + DR0);
1245 writel(NS_CMD_WRITE_FREEBUFQ | (u32) type, card->membase + CMD);
1247 spin_unlock_irqrestore(&card->res_lock, flags);
1249 XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n", card->index,
1250 (type == BUF_SM ? "small" : "large"), addr1, addr2);
1253 if (!card->efbie && card->sbfqc >= card->sbnr.min &&
1254 card->lbfqc >= card->lbnr.min)
1257 writel((readl(card->membase + CFG) | NS_CFG_EFBIE), card->membase + CFG);
1265 static void ns_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
1269 struct atm_dev *dev;
1270 unsigned long flags;
1272 card = (ns_dev *) dev_id;
1276 PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index);
1278 ns_grab_int_lock(card, flags);
1280 stat_r = readl(card->membase + STAT);
1282 /* Transmit Status Indicator has been written to T. S. Queue */
1283 if (stat_r & NS_STAT_TSIF)
1285 TXPRINTK("nicstar%d: TSI interrupt\n", card->index);
1287 writel(NS_STAT_TSIF, card->membase + STAT);
1290 /* Incomplete CS-PDU has been transmitted */
1291 if (stat_r & NS_STAT_TXICP)
1293 writel(NS_STAT_TXICP, card->membase + STAT);
1294 TXPRINTK("nicstar%d: Incomplete CS-PDU transmitted.\n",
1298 /* Transmit Status Queue 7/8 full */
1299 if (stat_r & NS_STAT_TSQF)
1301 writel(NS_STAT_TSQF, card->membase + STAT);
1302 PRINTK("nicstar%d: TSQ full.\n", card->index);
1306 /* Timer overflow */
1307 if (stat_r & NS_STAT_TMROF)
1309 writel(NS_STAT_TMROF, card->membase + STAT);
1310 PRINTK("nicstar%d: Timer overflow.\n", card->index);
1313 /* PHY device interrupt signal active */
1314 if (stat_r & NS_STAT_PHYI)
1316 writel(NS_STAT_PHYI, card->membase + STAT);
1317 PRINTK("nicstar%d: PHY interrupt.\n", card->index);
1318 if (dev->phy && dev->phy->interrupt) {
1319 dev->phy->interrupt(dev);
1323 /* Small Buffer Queue is full */
1324 if (stat_r & NS_STAT_SFBQF)
1326 writel(NS_STAT_SFBQF, card->membase + STAT);
1327 printk("nicstar%d: Small free buffer queue is full.\n", card->index);
1330 /* Large Buffer Queue is full */
1331 if (stat_r & NS_STAT_LFBQF)
1333 writel(NS_STAT_LFBQF, card->membase + STAT);
1334 printk("nicstar%d: Large free buffer queue is full.\n", card->index);
1337 /* Receive Status Queue is full */
1338 if (stat_r & NS_STAT_RSQF)
1340 writel(NS_STAT_RSQF, card->membase + STAT);
1341 printk("nicstar%d: RSQ full.\n", card->index);
1345 /* Complete CS-PDU received */
1346 if (stat_r & NS_STAT_EOPDU)
1348 RXPRINTK("nicstar%d: End of CS-PDU received.\n", card->index);
1350 writel(NS_STAT_EOPDU, card->membase + STAT);
1353 /* Raw cell received */
1354 if (stat_r & NS_STAT_RAWCF)
1356 writel(NS_STAT_RAWCF, card->membase + STAT);
1358 printk("nicstar%d: Raw cell received and no support yet...\n",
1360 #endif /* RCQ_SUPPORT */
1361 /* NOTE: the following procedure may keep a raw cell pending until the
1362 next interrupt. As this preliminary support is only meant to
1363 avoid buffer leakage, this is not an issue. */
1364 while (readl(card->membase + RAWCT) != card->rawch)
1368 rawcell = (ns_rcqe *) bus_to_virt(card->rawch);
1369 if (ns_rcqe_islast(rawcell))
1371 struct sk_buff *oldbuf;
1373 oldbuf = card->rcbuf;
1374 card->rcbuf = (struct sk_buff *) ns_rcqe_nextbufhandle(rawcell);
1375 card->rawch = (u32) virt_to_bus(card->rcbuf->data);
1376 recycle_rx_buf(card, oldbuf);
1379 card->rawch += NS_RCQE_SIZE;
1383 /* Small buffer queue is empty */
1384 if (stat_r & NS_STAT_SFBQE)
1389 writel(NS_STAT_SFBQE, card->membase + STAT);
1390 printk("nicstar%d: Small free buffer queue empty.\n",
1392 for (i = 0; i < card->sbnr.min; i++)
1394 sb = alloc_skb(NS_SMSKBSIZE, GFP_ATOMIC);
1397 writel(readl(card->membase + CFG) & ~NS_CFG_EFBIE, card->membase + CFG);
1401 skb_queue_tail(&card->sbpool.queue, sb);
1402 skb_reserve(sb, NS_AAL0_HEADER);
1403 push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0);
1409 /* Large buffer queue empty */
1410 if (stat_r & NS_STAT_LFBQE)
1415 writel(NS_STAT_LFBQE, card->membase + STAT);
1416 printk("nicstar%d: Large free buffer queue empty.\n",
1418 for (i = 0; i < card->lbnr.min; i++)
1420 lb = alloc_skb(NS_LGSKBSIZE, GFP_ATOMIC);
1423 writel(readl(card->membase + CFG) & ~NS_CFG_EFBIE, card->membase + CFG);
1427 skb_queue_tail(&card->lbpool.queue, lb);
1428 skb_reserve(lb, NS_SMBUFSIZE);
1429 push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0);
1435 /* Receive Status Queue is 7/8 full */
1436 if (stat_r & NS_STAT_RSQAF)
1438 writel(NS_STAT_RSQAF, card->membase + STAT);
1439 RXPRINTK("nicstar%d: RSQ almost full.\n", card->index);
1443 spin_unlock_irqrestore(&card->int_lock, flags);
1444 PRINTK("nicstar%d: end of interrupt service\n", card->index);
1449 static int ns_open(struct atm_vcc *vcc, short vpi, int vci)
1454 unsigned long tmpl, modl;
1455 int tcr, tcra; /* target cell rate, and absolute value */
1456 int n = 0; /* Number of entries in the TST. Initialized to remove
1457 the compiler warning. */
1459 int frscdi = 0; /* Index of the SCD. Initialized to remove the compiler
1460 warning. How I wish compilers were clever enough to
1461 tell which variables can truly be used
1463 int inuse; /* tx or rx vc already in use by another vcc */
1465 card = (ns_dev *) vcc->dev->dev_data;
1466 PRINTK("nicstar%d: opening vpi.vci %d.%d \n", card->index, (int) vpi, vci);
1467 if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0)
1469 PRINTK("nicstar%d: unsupported AAL.\n", card->index);
1473 if ((error = atm_find_ci(vcc, &vpi, &vci)))
1475 PRINTK("nicstar%d: error in atm_find_ci().\n", card->index);
1478 vc = &(card->vcmap[vpi << card->vcibits | vci]);
1484 if (vcc->qos.txtp.traffic_class != ATM_NONE && vc->tx)
1486 if (vcc->qos.rxtp.traffic_class != ATM_NONE && vc->rx)
1490 printk("nicstar%d: %s vci already in use.\n", card->index,
1491 inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx");
1495 set_bit(ATM_VF_ADDR,&vcc->flags);
1497 /* NOTE: You are not allowed to modify an open connection's QOS. To change
1498 that, remove the ATM_VF_PARTIAL flag checking. There may be other changes
1499 needed to do that. */
1500 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
1504 set_bit(ATM_VF_PARTIAL,&vcc->flags);
1505 if (vcc->qos.txtp.traffic_class == ATM_CBR)
1507 /* Check requested cell rate and availability of SCD */
1508 if (vcc->qos.txtp.max_pcr == 0 && vcc->qos.txtp.pcr == 0 &&
1509 vcc->qos.txtp.min_pcr == 0)
1511 PRINTK("nicstar%d: trying to open a CBR vc with cell rate = 0 \n",
1513 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1514 clear_bit(ATM_VF_ADDR,&vcc->flags);
1518 tcr = atm_pcr_goal(&(vcc->qos.txtp));
1519 tcra = tcr >= 0 ? tcr : -tcr;
1521 PRINTK("nicstar%d: target cell rate = %d.\n", card->index,
1522 vcc->qos.txtp.max_pcr);
1524 tmpl = (unsigned long)tcra * (unsigned long)NS_TST_NUM_ENTRIES;
1525 modl = tmpl % card->max_pcr;
1527 n = (int)(tmpl / card->max_pcr);
1534 if ((n = (card->tst_free_entries - NS_TST_RESERVED)) <= 0)
1536 PRINTK("nicstar%d: no CBR bandwidth free.\n", card->index);
1537 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1538 clear_bit(ATM_VF_ADDR,&vcc->flags);
1545 printk("nicstar%d: selected bandwidth < granularity.\n", card->index);
1546 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1547 clear_bit(ATM_VF_ADDR,&vcc->flags);
1551 if (n > (card->tst_free_entries - NS_TST_RESERVED))
1553 PRINTK("nicstar%d: not enough free CBR bandwidth.\n", card->index);
1554 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1555 clear_bit(ATM_VF_ADDR,&vcc->flags);
1559 card->tst_free_entries -= n;
1561 XPRINTK("nicstar%d: writing %d tst entries.\n", card->index, n);
1562 for (frscdi = 0; frscdi < NS_FRSCD_NUM; frscdi++)
1564 if (card->scd2vc[frscdi] == NULL)
1566 card->scd2vc[frscdi] = vc;
1570 if (frscdi == NS_FRSCD_NUM)
1572 PRINTK("nicstar%d: no SCD available for CBR channel.\n", card->index);
1573 card->tst_free_entries += n;
1574 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1575 clear_bit(ATM_VF_ADDR,&vcc->flags);
1579 vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE;
1581 scq = get_scq(CBR_SCQSIZE, vc->cbr_scd);
1582 if (scq == (scq_info *) NULL)
1584 PRINTK("nicstar%d: can't get fixed rate SCQ.\n", card->index);
1585 card->scd2vc[frscdi] = NULL;
1586 card->tst_free_entries += n;
1587 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1588 clear_bit(ATM_VF_ADDR,&vcc->flags);
1592 u32d[0] = (u32) virt_to_bus(scq->base);
1593 u32d[1] = (u32) 0x00000000;
1594 u32d[2] = (u32) 0xffffffff;
1595 u32d[3] = (u32) 0x00000000;
1596 ns_write_sram(card, vc->cbr_scd, u32d, 4);
1598 fill_tst(card, n, vc);
1602 vc->cbr_scd = 0x00000000;
1603 vc->scq = card->scq0;
1606 if (vcc->qos.txtp.traffic_class != ATM_NONE)
1612 if (vcc->qos.rxtp.traffic_class != ATM_NONE)
1620 /* Open the connection in hardware */
1621 if (vcc->qos.aal == ATM_AAL5)
1622 status = NS_RCTE_AAL5 | NS_RCTE_CONNECTOPEN;
1623 else /* vcc->qos.aal == ATM_AAL0 */
1624 status = NS_RCTE_AAL0 | NS_RCTE_CONNECTOPEN;
1626 status |= NS_RCTE_RAWCELLINTEN;
1627 #endif /* RCQ_SUPPORT */
1628 ns_write_sram(card, NS_RCT + (vpi << card->vcibits | vci) *
1629 NS_RCT_ENTRY_SIZE, &status, 1);
1634 set_bit(ATM_VF_READY,&vcc->flags);
1640 static void ns_close(struct atm_vcc *vcc)
1648 card = vcc->dev->dev_data;
1649 PRINTK("nicstar%d: closing vpi.vci %d.%d \n", card->index,
1650 (int) vcc->vpi, vcc->vci);
1652 clear_bit(ATM_VF_READY,&vcc->flags);
1654 if (vcc->qos.rxtp.traffic_class != ATM_NONE)
1657 unsigned long flags;
1659 addr = NS_RCT + (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE;
1660 ns_grab_res_lock(card, flags);
1661 while(CMD_BUSY(card));
1662 writel(NS_CMD_CLOSE_CONNECTION | addr << 2, card->membase + CMD);
1663 spin_unlock_irqrestore(&card->res_lock, flags);
1666 if (vc->rx_iov != NULL)
1668 struct sk_buff *iovb;
1671 stat = readl(card->membase + STAT);
1672 card->sbfqc = ns_stat_sfbqc_get(stat);
1673 card->lbfqc = ns_stat_lfbqc_get(stat);
1675 PRINTK("nicstar%d: closing a VC with pending rx buffers.\n",
1678 recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
1679 ATM_SKB(iovb)->iovcnt);
1680 ATM_SKB(iovb)->iovcnt = 0;
1681 ATM_SKB(iovb)->vcc = NULL;
1682 ns_grab_int_lock(card, flags);
1683 recycle_iov_buf(card, iovb);
1684 spin_unlock_irqrestore(&card->int_lock, flags);
1689 if (vcc->qos.txtp.traffic_class != ATM_NONE)
1694 if (vcc->qos.txtp.traffic_class == ATM_CBR)
1696 unsigned long flags;
1704 ns_grab_scq_lock(card, scq, flags);
1706 if (scqep == scq->base)
1710 if (scqep == scq->tail)
1712 spin_unlock_irqrestore(&scq->lock, flags);
1715 /* If the last entry is not a TSR, place one in the SCQ in order to
1716 be able to completely drain it and then close. */
1717 if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next)
1724 tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE);
1725 scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE;
1726 scqi = scq->next - scq->base;
1727 tsr.word_2 = ns_tsr_mkword_2(scdi, scqi);
1728 tsr.word_3 = 0x00000000;
1729 tsr.word_4 = 0x00000000;
1732 scq->skb[index] = NULL;
1733 if (scq->next == scq->last)
1734 scq->next = scq->base;
1737 data = (u32) virt_to_bus(scq->next);
1738 ns_write_sram(card, scq->scd, &data, 1);
1740 spin_unlock_irqrestore(&scq->lock, flags);
1744 /* Free all TST entries */
1745 data = NS_TST_OPCODE_VARIABLE;
1746 for (i = 0; i < NS_TST_NUM_ENTRIES; i++)
1748 if (card->tste2vc[i] == vc)
1750 ns_write_sram(card, card->tst_addr + i, &data, 1);
1751 card->tste2vc[i] = NULL;
1752 card->tst_free_entries++;
1756 card->scd2vc[(vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE] = NULL;
1757 free_scq(vc->scq, vcc);
1760 vcc->dev_data = NULL;
1761 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1762 clear_bit(ATM_VF_ADDR,&vcc->flags);
1767 stat = readl(card->membase + STAT);
1768 cfg = readl(card->membase + CFG);
1769 printk("STAT = 0x%08X CFG = 0x%08X \n", stat, cfg);
1770 printk("TSQ: base = 0x%08X next = 0x%08X last = 0x%08X TSQT = 0x%08X \n",
1771 (u32) card->tsq.base, (u32) card->tsq.next,(u32) card->tsq.last,
1772 readl(card->membase + TSQT));
1773 printk("RSQ: base = 0x%08X next = 0x%08X last = 0x%08X RSQT = 0x%08X \n",
1774 (u32) card->rsq.base, (u32) card->rsq.next,(u32) card->rsq.last,
1775 readl(card->membase + RSQT));
1776 printk("Empty free buffer queue interrupt %s \n",
1777 card->efbie ? "enabled" : "disabled");
1778 printk("SBCNT = %d count = %d LBCNT = %d count = %d \n",
1779 ns_stat_sfbqc_get(stat), card->sbpool.count,
1780 ns_stat_lfbqc_get(stat), card->lbpool.count);
1781 printk("hbpool.count = %d iovpool.count = %d \n",
1782 card->hbpool.count, card->iovpool.count);
1784 #endif /* RX_DEBUG */
1789 static void fill_tst(ns_dev *card, int n, vc_map *vc)
1796 /* It would be very complicated to keep the two TSTs synchronized while
1797 assuring that writes are only made to the inactive TST. So, for now I
1798 will use only one TST. If problems occur, I will change this again */
1800 new_tst = card->tst_addr;
1802 /* Fill procedure */
1804 for (e = 0; e < NS_TST_NUM_ENTRIES; e++)
1806 if (card->tste2vc[e] == NULL)
1809 if (e == NS_TST_NUM_ENTRIES) {
1810 printk("nicstar%d: No free TST entries found. \n", card->index);
1815 cl = NS_TST_NUM_ENTRIES;
1816 data = ns_tste_make(NS_TST_OPCODE_FIXED, vc->cbr_scd);
1820 if (cl >= NS_TST_NUM_ENTRIES && card->tste2vc[e] == NULL)
1822 card->tste2vc[e] = vc;
1823 ns_write_sram(card, new_tst + e, &data, 1);
1824 cl -= NS_TST_NUM_ENTRIES;
1828 if (++e == NS_TST_NUM_ENTRIES) {
1834 /* End of fill procedure */
1836 data = ns_tste_make(NS_TST_OPCODE_END, new_tst);
1837 ns_write_sram(card, new_tst + NS_TST_NUM_ENTRIES, &data, 1);
1838 ns_write_sram(card, card->tst_addr + NS_TST_NUM_ENTRIES, &data, 1);
1839 card->tst_addr = new_tst;
1844 static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
1849 unsigned long buflen;
1851 u32 flags; /* TBD flags, not CPU flags */
1853 card = vcc->dev->dev_data;
1854 TXPRINTK("nicstar%d: ns_send() called.\n", card->index);
1855 if ((vc = (vc_map *) vcc->dev_data) == NULL)
1857 printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", card->index);
1858 atomic_inc(&vcc->stats->tx_err);
1859 dev_kfree_skb_any(skb);
1865 printk("nicstar%d: Trying to transmit on a non-tx VC.\n", card->index);
1866 atomic_inc(&vcc->stats->tx_err);
1867 dev_kfree_skb_any(skb);
1871 if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0)
1873 printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", card->index);
1874 atomic_inc(&vcc->stats->tx_err);
1875 dev_kfree_skb_any(skb);
1879 if (ATM_SKB(skb)->iovcnt != 0)
1881 printk("nicstar%d: No scatter-gather yet.\n", card->index);
1882 atomic_inc(&vcc->stats->tx_err);
1883 dev_kfree_skb_any(skb);
1887 ATM_SKB(skb)->vcc = vcc;
1889 if (vcc->qos.aal == ATM_AAL5)
1891 buflen = (skb->len + 47 + 8) / 48 * 48; /* Multiple of 48 */
1892 flags = NS_TBD_AAL5;
1893 scqe.word_2 = cpu_to_le32((u32) virt_to_bus(skb->data));
1894 scqe.word_3 = cpu_to_le32((u32) skb->len);
1895 scqe.word_4 = ns_tbd_mkword_4(0, (u32) vcc->vpi, (u32) vcc->vci, 0,
1896 ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ? 1 : 0);
1897 flags |= NS_TBD_EOPDU;
1899 else /* (vcc->qos.aal == ATM_AAL0) */
1901 buflen = ATM_CELL_PAYLOAD; /* i.e., 48 bytes */
1902 flags = NS_TBD_AAL0;
1903 scqe.word_2 = cpu_to_le32((u32) virt_to_bus(skb->data) + NS_AAL0_HEADER);
1904 scqe.word_3 = cpu_to_le32(0x00000000);
1905 if (*skb->data & 0x02) /* Payload type 1 - end of pdu */
1906 flags |= NS_TBD_EOPDU;
1907 scqe.word_4 = cpu_to_le32(*((u32 *) skb->data) & ~NS_TBD_VC_MASK);
1908 /* Force the VPI/VCI to be the same as in VCC struct */
1909 scqe.word_4 |= cpu_to_le32((((u32) vcc->vpi) << NS_TBD_VPI_SHIFT |
1910 ((u32) vcc->vci) << NS_TBD_VCI_SHIFT) &
1914 if (vcc->qos.txtp.traffic_class == ATM_CBR)
1916 scqe.word_1 = ns_tbd_mkword_1_novbr(flags, (u32) buflen);
1917 scq = ((vc_map *) vcc->dev_data)->scq;
1921 scqe.word_1 = ns_tbd_mkword_1(flags, (u32) 1, (u32) 1, (u32) buflen);
1925 if (push_scqe(card, vc, scq, &scqe, skb) != 0)
1927 atomic_inc(&vcc->stats->tx_err);
1928 dev_kfree_skb_any(skb);
1931 atomic_inc(&vcc->stats->tx);
1938 static int push_scqe(ns_dev *card, vc_map *vc, scq_info *scq, ns_scqe *tbd,
1939 struct sk_buff *skb)
1941 unsigned long flags;
1948 ns_grab_scq_lock(card, scq, flags);
1949 while (scq->tail == scq->next)
1951 if (in_interrupt()) {
1952 spin_unlock_irqrestore(&scq->lock, flags);
1953 printk("nicstar%d: Error pushing TBD.\n", card->index);
1958 spin_unlock_irqrestore(&scq->lock, flags);
1959 interruptible_sleep_on_timeout(&scq->scqfull_waitq, SCQFULL_TIMEOUT);
1960 ns_grab_scq_lock(card, scq, flags);
1963 spin_unlock_irqrestore(&scq->lock, flags);
1964 printk("nicstar%d: Timeout pushing TBD.\n", card->index);
1969 index = (int) (scq->next - scq->base);
1970 scq->skb[index] = skb;
1971 XPRINTK("nicstar%d: sending skb at 0x%x (pos %d).\n",
1972 card->index, (u32) skb, index);
1973 XPRINTK("nicstar%d: TBD written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%x.\n",
1974 card->index, le32_to_cpu(tbd->word_1), le32_to_cpu(tbd->word_2),
1975 le32_to_cpu(tbd->word_3), le32_to_cpu(tbd->word_4),
1977 if (scq->next == scq->last)
1978 scq->next = scq->base;
1983 if (scq->num_entries == VBR_SCQ_NUM_ENTRIES)
1991 if (vc->tbd_count >= MAX_TBD_PER_VC || scq->tbd_count >= MAX_TBD_PER_SCQ)
1995 while (scq->tail == scq->next)
1997 if (in_interrupt()) {
1998 data = (u32) virt_to_bus(scq->next);
1999 ns_write_sram(card, scq->scd, &data, 1);
2000 spin_unlock_irqrestore(&scq->lock, flags);
2001 printk("nicstar%d: Error pushing TSR.\n", card->index);
2006 if (has_run++) break;
2007 spin_unlock_irqrestore(&scq->lock, flags);
2008 interruptible_sleep_on_timeout(&scq->scqfull_waitq, SCQFULL_TIMEOUT);
2009 ns_grab_scq_lock(card, scq, flags);
2014 tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE);
2016 scdi = NS_TSR_SCDISVBR;
2018 scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE;
2019 scqi = scq->next - scq->base;
2020 tsr.word_2 = ns_tsr_mkword_2(scdi, scqi);
2021 tsr.word_3 = 0x00000000;
2022 tsr.word_4 = 0x00000000;
2026 scq->skb[index] = NULL;
2027 XPRINTK("nicstar%d: TSR written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%x.\n",
2028 card->index, le32_to_cpu(tsr.word_1), le32_to_cpu(tsr.word_2),
2029 le32_to_cpu(tsr.word_3), le32_to_cpu(tsr.word_4),
2031 if (scq->next == scq->last)
2032 scq->next = scq->base;
2039 PRINTK("nicstar%d: Timeout pushing TSR.\n", card->index);
2041 data = (u32) virt_to_bus(scq->next);
2042 ns_write_sram(card, scq->scd, &data, 1);
2044 spin_unlock_irqrestore(&scq->lock, flags);
2051 static void process_tsq(ns_dev *card)
2055 ns_tsi *previous = NULL, *one_ahead, *two_ahead;
2056 int serviced_entries; /* flag indicating at least on entry was serviced */
2058 serviced_entries = 0;
2060 if (card->tsq.next == card->tsq.last)
2061 one_ahead = card->tsq.base;
2063 one_ahead = card->tsq.next + 1;
2065 if (one_ahead == card->tsq.last)
2066 two_ahead = card->tsq.base;
2068 two_ahead = one_ahead + 1;
2070 while (!ns_tsi_isempty(card->tsq.next) || !ns_tsi_isempty(one_ahead) ||
2071 !ns_tsi_isempty(two_ahead))
2072 /* At most two empty, as stated in the 77201 errata */
2074 serviced_entries = 1;
2076 /* Skip the one or two possible empty entries */
2077 while (ns_tsi_isempty(card->tsq.next)) {
2078 if (card->tsq.next == card->tsq.last)
2079 card->tsq.next = card->tsq.base;
2084 if (!ns_tsi_tmrof(card->tsq.next))
2086 scdi = ns_tsi_getscdindex(card->tsq.next);
2087 if (scdi == NS_TSI_SCDISVBR)
2091 if (card->scd2vc[scdi] == NULL)
2093 printk("nicstar%d: could not find VC from SCD index.\n",
2095 ns_tsi_init(card->tsq.next);
2098 scq = card->scd2vc[scdi]->scq;
2100 drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next));
2102 wake_up_interruptible(&(scq->scqfull_waitq));
2105 ns_tsi_init(card->tsq.next);
2106 previous = card->tsq.next;
2107 if (card->tsq.next == card->tsq.last)
2108 card->tsq.next = card->tsq.base;
2112 if (card->tsq.next == card->tsq.last)
2113 one_ahead = card->tsq.base;
2115 one_ahead = card->tsq.next + 1;
2117 if (one_ahead == card->tsq.last)
2118 two_ahead = card->tsq.base;
2120 two_ahead = one_ahead + 1;
2123 if (serviced_entries) {
2124 writel((((u32) previous) - ((u32) card->tsq.base)),
2125 card->membase + TSQH);
2131 static void drain_scq(ns_dev *card, scq_info *scq, int pos)
2133 struct atm_vcc *vcc;
2134 struct sk_buff *skb;
2136 unsigned long flags;
2138 XPRINTK("nicstar%d: drain_scq() called, scq at 0x%x, pos %d.\n",
2139 card->index, (u32) scq, pos);
2140 if (pos >= scq->num_entries)
2142 printk("nicstar%d: Bad index on drain_scq().\n", card->index);
2146 ns_grab_scq_lock(card, scq, flags);
2147 i = (int) (scq->tail - scq->base);
2148 if (++i == scq->num_entries)
2153 XPRINTK("nicstar%d: freeing skb at 0x%x (index %d).\n",
2154 card->index, (u32) skb, i);
2157 vcc = ATM_SKB(skb)->vcc;
2158 if (vcc->pop != NULL) {
2161 dev_kfree_skb_irq(skb);
2165 if (++i == scq->num_entries)
2168 scq->tail = scq->base + pos;
2169 spin_unlock_irqrestore(&scq->lock, flags);
2174 static void process_rsq(ns_dev *card)
2178 if (!ns_rsqe_valid(card->rsq.next))
2180 while (ns_rsqe_valid(card->rsq.next))
2182 dequeue_rx(card, card->rsq.next);
2183 ns_rsqe_init(card->rsq.next);
2184 previous = card->rsq.next;
2185 if (card->rsq.next == card->rsq.last)
2186 card->rsq.next = card->rsq.base;
2190 writel((((u32) previous) - ((u32) card->rsq.base)),
2191 card->membase + RSQH);
2196 static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe)
2200 struct sk_buff *iovb;
2202 struct atm_vcc *vcc;
2203 struct sk_buff *skb;
2204 unsigned short aal5_len;
2208 stat = readl(card->membase + STAT);
2209 card->sbfqc = ns_stat_sfbqc_get(stat);
2210 card->lbfqc = ns_stat_lfbqc_get(stat);
2212 skb = (struct sk_buff *) le32_to_cpu(rsqe->buffer_handle);
2213 vpi = ns_rsqe_vpi(rsqe);
2214 vci = ns_rsqe_vci(rsqe);
2215 if (vpi >= 1UL << card->vpibits || vci >= 1UL << card->vcibits)
2217 printk("nicstar%d: SDU received for out-of-range vc %d.%d.\n",
2218 card->index, vpi, vci);
2219 recycle_rx_buf(card, skb);
2223 vc = &(card->vcmap[vpi << card->vcibits | vci]);
2226 RXPRINTK("nicstar%d: SDU received on non-rx vc %d.%d.\n",
2227 card->index, vpi, vci);
2228 recycle_rx_buf(card, skb);
2234 if (vcc->qos.aal == ATM_AAL0)
2237 unsigned char *cell;
2241 for (i = ns_rsqe_cellcount(rsqe); i; i--)
2243 if ((sb = alloc_skb(NS_SMSKBSIZE, GFP_ATOMIC)) == NULL)
2245 printk("nicstar%d: Can't allocate buffers for aal0.\n",
2247 atomic_add(i,&vcc->stats->rx_drop);
2250 if (!atm_charge(vcc, sb->truesize))
2252 RXPRINTK("nicstar%d: atm_charge() dropped aal0 packets.\n",
2254 atomic_add(i-1,&vcc->stats->rx_drop); /* already increased by 1 */
2255 dev_kfree_skb_any(sb);
2258 /* Rebuild the header */
2259 *((u32 *) sb->data) = le32_to_cpu(rsqe->word_1) << 4 |
2260 (ns_rsqe_clp(rsqe) ? 0x00000001 : 0x00000000);
2261 if (i == 1 && ns_rsqe_eopdu(rsqe))
2262 *((u32 *) sb->data) |= 0x00000002;
2263 skb_put(sb, NS_AAL0_HEADER);
2264 memcpy(sb->tail, cell, ATM_CELL_PAYLOAD);
2265 skb_put(sb, ATM_CELL_PAYLOAD);
2266 ATM_SKB(sb)->vcc = vcc;
2269 atomic_inc(&vcc->stats->rx);
2270 cell += ATM_CELL_PAYLOAD;
2273 recycle_rx_buf(card, skb);
2277 /* To reach this point, the AAL layer can only be AAL5 */
2279 if ((iovb = vc->rx_iov) == NULL)
2281 iovb = skb_dequeue(&(card->iovpool.queue));
2282 if (iovb == NULL) /* No buffers in the queue */
2284 iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC);
2287 printk("nicstar%d: Out of iovec buffers.\n", card->index);
2288 atomic_inc(&vcc->stats->rx_drop);
2289 recycle_rx_buf(card, skb);
2294 if (--card->iovpool.count < card->iovnr.min)
2296 struct sk_buff *new_iovb;
2297 if ((new_iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL)
2299 skb_queue_tail(&card->iovpool.queue, new_iovb);
2300 card->iovpool.count++;
2304 ATM_SKB(iovb)->iovcnt = 0;
2306 iovb->tail = iovb->data = iovb->head;
2307 ATM_SKB(iovb)->vcc = vcc;
2308 /* IMPORTANT: a pointer to the sk_buff containing the small or large
2309 buffer is stored as iovec base, NOT a pointer to the
2310 small or large buffer itself. */
2312 else if (ATM_SKB(iovb)->iovcnt >= NS_MAX_IOVECS)
2314 printk("nicstar%d: received too big AAL5 SDU.\n", card->index);
2315 atomic_inc(&vcc->stats->rx_err);
2316 recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, NS_MAX_IOVECS);
2317 ATM_SKB(iovb)->iovcnt = 0;
2319 iovb->tail = iovb->data = iovb->head;
2320 ATM_SKB(iovb)->vcc = vcc;
2322 iov = &((struct iovec *) iovb->data)[ATM_SKB(iovb)->iovcnt++];
2323 iov->iov_base = (void *) skb;
2324 iov->iov_len = ns_rsqe_cellcount(rsqe) * 48;
2325 iovb->len += iov->iov_len;
2327 if (ATM_SKB(iovb)->iovcnt == 1)
2329 if (skb->list != &card->sbpool.queue)
2331 printk("nicstar%d: Expected a small buffer, and this is not one.\n",
2333 which_list(card, skb);
2334 atomic_inc(&vcc->stats->rx_err);
2335 recycle_rx_buf(card, skb);
2337 recycle_iov_buf(card, iovb);
2341 else /* ATM_SKB(iovb)->iovcnt >= 2 */
2343 if (skb->list != &card->lbpool.queue)
2345 printk("nicstar%d: Expected a large buffer, and this is not one.\n",
2347 which_list(card, skb);
2348 atomic_inc(&vcc->stats->rx_err);
2349 recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
2350 ATM_SKB(iovb)->iovcnt);
2352 recycle_iov_buf(card, iovb);
2357 if (ns_rsqe_eopdu(rsqe))
2359 /* This works correctly regardless of the endianness of the host */
2360 unsigned char *L1L2 = (unsigned char *)((u32)skb->data +
2362 aal5_len = L1L2[0] << 8 | L1L2[1];
2363 len = (aal5_len == 0x0000) ? 0x10000 : aal5_len;
2364 if (ns_rsqe_crcerr(rsqe) ||
2365 len + 8 > iovb->len || len + (47 + 8) < iovb->len)
2367 printk("nicstar%d: AAL5 CRC error", card->index);
2368 if (len + 8 > iovb->len || len + (47 + 8) < iovb->len)
2369 printk(" - PDU size mismatch.\n");
2372 atomic_inc(&vcc->stats->rx_err);
2373 recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
2374 ATM_SKB(iovb)->iovcnt);
2376 recycle_iov_buf(card, iovb);
2380 /* By this point we (hopefully) have a complete SDU without errors. */
2382 if (ATM_SKB(iovb)->iovcnt == 1) /* Just a small buffer */
2384 /* skb points to a small buffer */
2385 if (!atm_charge(vcc, skb->truesize))
2387 push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data),
2393 dequeue_sm_buf(card, skb);
2394 #ifdef NS_USE_DESTRUCTORS
2395 skb->destructor = ns_sb_destructor;
2396 #endif /* NS_USE_DESTRUCTORS */
2397 ATM_SKB(skb)->vcc = vcc;
2399 vcc->push(vcc, skb);
2400 atomic_inc(&vcc->stats->rx);
2403 else if (ATM_SKB(iovb)->iovcnt == 2) /* One small plus one large buffer */
2407 sb = (struct sk_buff *) (iov - 1)->iov_base;
2408 /* skb points to a large buffer */
2410 if (len <= NS_SMBUFSIZE)
2412 if (!atm_charge(vcc, sb->truesize))
2414 push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data),
2420 dequeue_sm_buf(card, sb);
2421 #ifdef NS_USE_DESTRUCTORS
2422 sb->destructor = ns_sb_destructor;
2423 #endif /* NS_USE_DESTRUCTORS */
2424 ATM_SKB(sb)->vcc = vcc;
2427 atomic_inc(&vcc->stats->rx);
2430 push_rxbufs(card, BUF_LG, (u32) skb,
2431 (u32) virt_to_bus(skb->data), 0, 0);
2434 else /* len > NS_SMBUFSIZE, the usual case */
2436 if (!atm_charge(vcc, skb->truesize))
2438 push_rxbufs(card, BUF_LG, (u32) skb,
2439 (u32) virt_to_bus(skb->data), 0, 0);
2443 dequeue_lg_buf(card, skb);
2444 #ifdef NS_USE_DESTRUCTORS
2445 skb->destructor = ns_lb_destructor;
2446 #endif /* NS_USE_DESTRUCTORS */
2447 skb_push(skb, NS_SMBUFSIZE);
2448 memcpy(skb->data, sb->data, NS_SMBUFSIZE);
2449 skb_put(skb, len - NS_SMBUFSIZE);
2450 ATM_SKB(skb)->vcc = vcc;
2452 vcc->push(vcc, skb);
2453 atomic_inc(&vcc->stats->rx);
2456 push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data),
2462 else /* Must push a huge buffer */
2464 struct sk_buff *hb, *sb, *lb;
2465 int remaining, tocopy;
2468 hb = skb_dequeue(&(card->hbpool.queue));
2469 if (hb == NULL) /* No buffers in the queue */
2472 hb = alloc_skb(NS_HBUFSIZE, GFP_ATOMIC);
2475 printk("nicstar%d: Out of huge buffers.\n", card->index);
2476 atomic_inc(&vcc->stats->rx_drop);
2477 recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
2478 ATM_SKB(iovb)->iovcnt);
2480 recycle_iov_buf(card, iovb);
2483 else if (card->hbpool.count < card->hbnr.min)
2485 struct sk_buff *new_hb;
2486 if ((new_hb = alloc_skb(NS_HBUFSIZE, GFP_ATOMIC)) != NULL)
2488 skb_queue_tail(&card->hbpool.queue, new_hb);
2489 card->hbpool.count++;
2494 if (--card->hbpool.count < card->hbnr.min)
2496 struct sk_buff *new_hb;
2497 if ((new_hb = alloc_skb(NS_HBUFSIZE, GFP_ATOMIC)) != NULL)
2499 skb_queue_tail(&card->hbpool.queue, new_hb);
2500 card->hbpool.count++;
2502 if (card->hbpool.count < card->hbnr.min)
2504 if ((new_hb = alloc_skb(NS_HBUFSIZE, GFP_ATOMIC)) != NULL)
2506 skb_queue_tail(&card->hbpool.queue, new_hb);
2507 card->hbpool.count++;
2512 iov = (struct iovec *) iovb->data;
2514 if (!atm_charge(vcc, hb->truesize))
2516 recycle_iovec_rx_bufs(card, iov, ATM_SKB(iovb)->iovcnt);
2517 if (card->hbpool.count < card->hbnr.max)
2519 skb_queue_tail(&card->hbpool.queue, hb);
2520 card->hbpool.count++;
2523 dev_kfree_skb_any(hb);
2527 /* Copy the small buffer to the huge buffer */
2528 sb = (struct sk_buff *) iov->iov_base;
2529 memcpy(hb->data, sb->data, iov->iov_len);
2530 skb_put(hb, iov->iov_len);
2531 remaining = len - iov->iov_len;
2533 /* Free the small buffer */
2534 push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data),
2537 /* Copy all large buffers to the huge buffer and free them */
2538 for (j = 1; j < ATM_SKB(iovb)->iovcnt; j++)
2540 lb = (struct sk_buff *) iov->iov_base;
2541 tocopy = MIN(remaining, iov->iov_len);
2542 memcpy(hb->tail, lb->data, tocopy);
2543 skb_put(hb, tocopy);
2545 remaining -= tocopy;
2546 push_rxbufs(card, BUF_LG, (u32) lb,
2547 (u32) virt_to_bus(lb->data), 0, 0);
2550 if (remaining != 0 || hb->len != len)
2551 printk("nicstar%d: Huge buffer len mismatch.\n", card->index);
2552 #endif /* EXTRA_DEBUG */
2553 ATM_SKB(hb)->vcc = vcc;
2554 #ifdef NS_USE_DESTRUCTORS
2555 hb->destructor = ns_hb_destructor;
2556 #endif /* NS_USE_DESTRUCTORS */
2559 atomic_inc(&vcc->stats->rx);
2564 recycle_iov_buf(card, iovb);
2571 #ifdef NS_USE_DESTRUCTORS
2573 static void ns_sb_destructor(struct sk_buff *sb)
2578 card = (ns_dev *) ATM_SKB(sb)->vcc->dev->dev_data;
2579 stat = readl(card->membase + STAT);
2580 card->sbfqc = ns_stat_sfbqc_get(stat);
2581 card->lbfqc = ns_stat_lfbqc_get(stat);
2585 sb = alloc_skb(NS_SMSKBSIZE, GFP_KERNEL);
2588 skb_queue_tail(&card->sbpool.queue, sb);
2589 skb_reserve(sb, NS_AAL0_HEADER);
2590 push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0);
2591 } while (card->sbfqc < card->sbnr.min);
2596 static void ns_lb_destructor(struct sk_buff *lb)
2601 card = (ns_dev *) ATM_SKB(lb)->vcc->dev->dev_data;
2602 stat = readl(card->membase + STAT);
2603 card->sbfqc = ns_stat_sfbqc_get(stat);
2604 card->lbfqc = ns_stat_lfbqc_get(stat);
2608 lb = alloc_skb(NS_LGSKBSIZE, GFP_KERNEL);
2611 skb_queue_tail(&card->lbpool.queue, lb);
2612 skb_reserve(lb, NS_SMBUFSIZE);
2613 push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0);
2614 } while (card->lbfqc < card->lbnr.min);
2619 static void ns_hb_destructor(struct sk_buff *hb)
2623 card = (ns_dev *) ATM_SKB(hb)->vcc->dev->dev_data;
2625 while (card->hbpool.count < card->hbnr.init)
2627 hb = alloc_skb(NS_HBUFSIZE, GFP_KERNEL);
2630 skb_queue_tail(&card->hbpool.queue, hb);
2631 card->hbpool.count++;
2635 #endif /* NS_USE_DESTRUCTORS */
2639 static void recycle_rx_buf(ns_dev *card, struct sk_buff *skb)
2641 if (skb->list == &card->sbpool.queue)
2642 push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data), 0, 0);
2643 else if (skb->list == &card->lbpool.queue)
2644 push_rxbufs(card, BUF_LG, (u32) skb, (u32) virt_to_bus(skb->data), 0, 0);
2647 printk("nicstar%d: What kind of rx buffer is this?\n", card->index);
2648 dev_kfree_skb_any(skb);
2654 static void recycle_iovec_rx_bufs(ns_dev *card, struct iovec *iov, int count)
2656 struct sk_buff *skb;
2658 for (; count > 0; count--)
2660 skb = (struct sk_buff *) (iov++)->iov_base;
2661 if (skb->list == &card->sbpool.queue)
2662 push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data),
2664 else if (skb->list == &card->lbpool.queue)
2665 push_rxbufs(card, BUF_LG, (u32) skb, (u32) virt_to_bus(skb->data),
2669 printk("nicstar%d: What kind of rx buffer is this?\n", card->index);
2670 dev_kfree_skb_any(skb);
2677 static void recycle_iov_buf(ns_dev *card, struct sk_buff *iovb)
2679 if (card->iovpool.count < card->iovnr.max)
2681 skb_queue_tail(&card->iovpool.queue, iovb);
2682 card->iovpool.count++;
2685 dev_kfree_skb_any(iovb);
2690 static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb)
2693 #ifdef NS_USE_DESTRUCTORS
2694 if (card->sbfqc < card->sbnr.min)
2696 if (card->sbfqc < card->sbnr.init)
2698 struct sk_buff *new_sb;
2699 if ((new_sb = alloc_skb(NS_SMSKBSIZE, GFP_ATOMIC)) != NULL)
2701 skb_queue_tail(&card->sbpool.queue, new_sb);
2702 skb_reserve(new_sb, NS_AAL0_HEADER);
2703 push_rxbufs(card, BUF_SM, (u32) new_sb,
2704 (u32) virt_to_bus(new_sb->data), 0, 0);
2707 if (card->sbfqc < card->sbnr.init)
2708 #endif /* NS_USE_DESTRUCTORS */
2710 struct sk_buff *new_sb;
2711 if ((new_sb = alloc_skb(NS_SMSKBSIZE, GFP_ATOMIC)) != NULL)
2713 skb_queue_tail(&card->sbpool.queue, new_sb);
2714 skb_reserve(new_sb, NS_AAL0_HEADER);
2715 push_rxbufs(card, BUF_SM, (u32) new_sb,
2716 (u32) virt_to_bus(new_sb->data), 0, 0);
2723 static void dequeue_lg_buf(ns_dev *card, struct sk_buff *lb)
2726 #ifdef NS_USE_DESTRUCTORS
2727 if (card->lbfqc < card->lbnr.min)
2729 if (card->lbfqc < card->lbnr.init)
2731 struct sk_buff *new_lb;
2732 if ((new_lb = alloc_skb(NS_LGSKBSIZE, GFP_ATOMIC)) != NULL)
2734 skb_queue_tail(&card->lbpool.queue, new_lb);
2735 skb_reserve(new_lb, NS_SMBUFSIZE);
2736 push_rxbufs(card, BUF_LG, (u32) new_lb,
2737 (u32) virt_to_bus(new_lb->data), 0, 0);
2740 if (card->lbfqc < card->lbnr.init)
2741 #endif /* NS_USE_DESTRUCTORS */
2743 struct sk_buff *new_lb;
2744 if ((new_lb = alloc_skb(NS_LGSKBSIZE, GFP_ATOMIC)) != NULL)
2746 skb_queue_tail(&card->lbpool.queue, new_lb);
2747 skb_reserve(new_lb, NS_SMBUFSIZE);
2748 push_rxbufs(card, BUF_LG, (u32) new_lb,
2749 (u32) virt_to_bus(new_lb->data), 0, 0);
2756 static int ns_proc_read(struct atm_dev *dev, loff_t *pos, char *page)
2763 card = (ns_dev *) dev->dev_data;
2764 stat = readl(card->membase + STAT);
2766 return sprintf(page, "Pool count min init max \n");
2768 return sprintf(page, "Small %5d %5d %5d %5d \n",
2769 ns_stat_sfbqc_get(stat), card->sbnr.min, card->sbnr.init,
2772 return sprintf(page, "Large %5d %5d %5d %5d \n",
2773 ns_stat_lfbqc_get(stat), card->lbnr.min, card->lbnr.init,
2776 return sprintf(page, "Huge %5d %5d %5d %5d \n", card->hbpool.count,
2777 card->hbnr.min, card->hbnr.init, card->hbnr.max);
2779 return sprintf(page, "Iovec %5d %5d %5d %5d \n", card->iovpool.count,
2780 card->iovnr.min, card->iovnr.init, card->iovnr.max);
2784 retval = sprintf(page, "Interrupt counter: %u \n", card->intcnt);
2789 /* Dump 25.6 Mbps PHY registers */
2790 /* Now there's a 25.6 Mbps PHY driver this code isn't needed. I left it
2791 here just in case it's needed for debugging. */
2792 if (card->max_pcr == ATM_25_PCR && !left--)
2797 for (i = 0; i < 4; i++)
2799 while (CMD_BUSY(card));
2800 writel(NS_CMD_READ_UTILITY | 0x00000200 | i, card->membase + CMD);
2801 while (CMD_BUSY(card));
2802 phy_regs[i] = readl(card->membase + DR0) & 0x000000FF;
2805 return sprintf(page, "PHY regs: 0x%02X 0x%02X 0x%02X 0x%02X \n",
2806 phy_regs[0], phy_regs[1], phy_regs[2], phy_regs[3]);
2808 #endif /* 0 - Dump 25.6 Mbps PHY registers */
2811 if (left-- < NS_TST_NUM_ENTRIES)
2813 if (card->tste2vc[left + 1] == NULL)
2814 return sprintf(page, "%5d - VBR/UBR \n", left + 1);
2816 return sprintf(page, "%5d - %d %d \n", left + 1,
2817 card->tste2vc[left + 1]->tx_vcc->vpi,
2818 card->tste2vc[left + 1]->tx_vcc->vci);
2826 static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void *arg)
2831 unsigned long flags;
2833 card = dev->dev_data;
2837 if (get_user(pl.buftype, &((pool_levels *) arg)->buftype))
2841 case NS_BUFTYPE_SMALL:
2842 pl.count = ns_stat_sfbqc_get(readl(card->membase + STAT));
2843 pl.level.min = card->sbnr.min;
2844 pl.level.init = card->sbnr.init;
2845 pl.level.max = card->sbnr.max;
2848 case NS_BUFTYPE_LARGE:
2849 pl.count = ns_stat_lfbqc_get(readl(card->membase + STAT));
2850 pl.level.min = card->lbnr.min;
2851 pl.level.init = card->lbnr.init;
2852 pl.level.max = card->lbnr.max;
2855 case NS_BUFTYPE_HUGE:
2856 pl.count = card->hbpool.count;
2857 pl.level.min = card->hbnr.min;
2858 pl.level.init = card->hbnr.init;
2859 pl.level.max = card->hbnr.max;
2862 case NS_BUFTYPE_IOVEC:
2863 pl.count = card->iovpool.count;
2864 pl.level.min = card->iovnr.min;
2865 pl.level.init = card->iovnr.init;
2866 pl.level.max = card->iovnr.max;
2870 return -ENOIOCTLCMD;
2873 if (!copy_to_user((pool_levels *) arg, &pl, sizeof(pl)))
2874 return (sizeof(pl));
2879 if (!capable(CAP_NET_ADMIN))
2881 if (copy_from_user(&pl, (pool_levels *) arg, sizeof(pl)))
2883 if (pl.level.min >= pl.level.init || pl.level.init >= pl.level.max)
2885 if (pl.level.min == 0)
2889 case NS_BUFTYPE_SMALL:
2890 if (pl.level.max > TOP_SB)
2892 card->sbnr.min = pl.level.min;
2893 card->sbnr.init = pl.level.init;
2894 card->sbnr.max = pl.level.max;
2897 case NS_BUFTYPE_LARGE:
2898 if (pl.level.max > TOP_LB)
2900 card->lbnr.min = pl.level.min;
2901 card->lbnr.init = pl.level.init;
2902 card->lbnr.max = pl.level.max;
2905 case NS_BUFTYPE_HUGE:
2906 if (pl.level.max > TOP_HB)
2908 card->hbnr.min = pl.level.min;
2909 card->hbnr.init = pl.level.init;
2910 card->hbnr.max = pl.level.max;
2913 case NS_BUFTYPE_IOVEC:
2914 if (pl.level.max > TOP_IOVB)
2916 card->iovnr.min = pl.level.min;
2917 card->iovnr.init = pl.level.init;
2918 card->iovnr.max = pl.level.max;
2928 if (!capable(CAP_NET_ADMIN))
2930 btype = (int) arg; /* an int is the same size as a pointer */
2933 case NS_BUFTYPE_SMALL:
2934 while (card->sbfqc < card->sbnr.init)
2938 sb = alloc_skb(NS_SMSKBSIZE, GFP_KERNEL);
2941 skb_queue_tail(&card->sbpool.queue, sb);
2942 skb_reserve(sb, NS_AAL0_HEADER);
2943 push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0);
2947 case NS_BUFTYPE_LARGE:
2948 while (card->lbfqc < card->lbnr.init)
2952 lb = alloc_skb(NS_LGSKBSIZE, GFP_KERNEL);
2955 skb_queue_tail(&card->lbpool.queue, lb);
2956 skb_reserve(lb, NS_SMBUFSIZE);
2957 push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0);
2961 case NS_BUFTYPE_HUGE:
2962 while (card->hbpool.count > card->hbnr.init)
2966 ns_grab_int_lock(card, flags);
2967 hb = skb_dequeue(&card->hbpool.queue);
2968 card->hbpool.count--;
2969 spin_unlock_irqrestore(&card->int_lock, flags);
2971 printk("nicstar%d: huge buffer count inconsistent.\n",
2974 dev_kfree_skb_any(hb);
2977 while (card->hbpool.count < card->hbnr.init)
2981 hb = alloc_skb(NS_HBUFSIZE, GFP_KERNEL);
2984 ns_grab_int_lock(card, flags);
2985 skb_queue_tail(&card->hbpool.queue, hb);
2986 card->hbpool.count++;
2987 spin_unlock_irqrestore(&card->int_lock, flags);
2991 case NS_BUFTYPE_IOVEC:
2992 while (card->iovpool.count > card->iovnr.init)
2994 struct sk_buff *iovb;
2996 ns_grab_int_lock(card, flags);
2997 iovb = skb_dequeue(&card->iovpool.queue);
2998 card->iovpool.count--;
2999 spin_unlock_irqrestore(&card->int_lock, flags);
3001 printk("nicstar%d: iovec buffer count inconsistent.\n",
3004 dev_kfree_skb_any(iovb);
3007 while (card->iovpool.count < card->iovnr.init)
3009 struct sk_buff *iovb;
3011 iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL);
3014 ns_grab_int_lock(card, flags);
3015 skb_queue_tail(&card->iovpool.queue, iovb);
3016 card->iovpool.count++;
3017 spin_unlock_irqrestore(&card->int_lock, flags);
3028 if (dev->phy && dev->phy->ioctl) {
3029 return dev->phy->ioctl(dev, cmd, arg);
3032 printk("nicstar%d: %s == NULL \n", card->index,
3033 dev->phy ? "dev->phy->ioctl" : "dev->phy");
3034 return -ENOIOCTLCMD;
3041 static void which_list(ns_dev *card, struct sk_buff *skb)
3043 printk("It's a %s buffer.\n", skb->list == &card->sbpool.queue ?
3044 "small" : skb->list == &card->lbpool.queue ? "large" :
3045 skb->list == &card->hbpool.queue ? "huge" :
3046 skb->list == &card->iovpool.queue ? "iovec" : "unknown");
3051 static void ns_poll(unsigned long arg)
3055 unsigned long flags;
3058 PRINTK("nicstar: Entering ns_poll().\n");
3059 for (i = 0; i < num_cards; i++)
3062 if (spin_is_locked(&card->int_lock)) {
3063 /* Probably it isn't worth spinning */
3066 ns_grab_int_lock(card, flags);
3069 stat_r = readl(card->membase + STAT);
3070 if (stat_r & NS_STAT_TSIF)
3071 stat_w |= NS_STAT_TSIF;
3072 if (stat_r & NS_STAT_EOPDU)
3073 stat_w |= NS_STAT_EOPDU;
3078 writel(stat_w, card->membase + STAT);
3079 spin_unlock_irqrestore(&card->int_lock, flags);
3081 mod_timer(&ns_timer, jiffies + NS_POLL_PERIOD);
3082 PRINTK("nicstar: Leaving ns_poll().\n");
3087 static int ns_parse_mac(char *mac, unsigned char *esi)
3092 if (mac == NULL || esi == NULL)
3095 for (i = 0; i < 6; i++)
3097 if ((byte1 = ns_h2i(mac[j++])) < 0)
3099 if ((byte0 = ns_h2i(mac[j++])) < 0)
3101 esi[i] = (unsigned char) (byte1 * 16 + byte0);
3104 if (mac[j++] != ':')
3113 static short ns_h2i(char c)
3115 if (c >= '0' && c <= '9')
3116 return (short) (c - '0');
3117 if (c >= 'A' && c <= 'F')
3118 return (short) (c - 'A' + 10);
3119 if (c >= 'a' && c <= 'f')
3120 return (short) (c - 'a' + 10);
3126 static void ns_phy_put(struct atm_dev *dev, unsigned char value,
3130 unsigned long flags;
3132 card = dev->dev_data;
3133 ns_grab_res_lock(card, flags);
3134 while(CMD_BUSY(card));
3135 writel((unsigned long) value, card->membase + DR0);
3136 writel(NS_CMD_WRITE_UTILITY | 0x00000200 | (addr & 0x000000FF),
3137 card->membase + CMD);
3138 spin_unlock_irqrestore(&card->res_lock, flags);
3143 static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr)
3146 unsigned long flags;
3149 card = dev->dev_data;
3150 ns_grab_res_lock(card, flags);
3151 while(CMD_BUSY(card));
3152 writel(NS_CMD_READ_UTILITY | 0x00000200 | (addr & 0x000000FF),
3153 card->membase + CMD);
3154 while(CMD_BUSY(card));
3155 data = readl(card->membase + DR0) & 0x000000FF;
3156 spin_unlock_irqrestore(&card->res_lock, flags);
3157 return (unsigned char) data;