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Commit | Line | Data |
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098fde11 | 1 | /* |
1da177e4 LT |
2 | * nicstar.c |
3 | * | |
4 | * Device driver supporting CBR for IDT 77201/77211 "NICStAR" based cards. | |
5 | * | |
6 | * IMPORTANT: The included file nicstarmac.c was NOT WRITTEN BY ME. | |
7 | * It was taken from the frle-0.22 device driver. | |
8 | * As the file doesn't have a copyright notice, in the file | |
9 | * nicstarmac.copyright I put the copyright notice from the | |
10 | * frle-0.22 device driver. | |
11 | * Some code is based on the nicstar driver by M. Welsh. | |
12 | * | |
13 | * Author: Rui Prior (rprior@inescn.pt) | |
14 | * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999 | |
15 | * | |
16 | * | |
17 | * (C) INESC 1999 | |
098fde11 | 18 | */ |
1da177e4 | 19 | |
098fde11 C |
20 | /* |
21 | * IMPORTANT INFORMATION | |
1da177e4 LT |
22 | * |
23 | * There are currently three types of spinlocks: | |
24 | * | |
25 | * 1 - Per card interrupt spinlock (to protect structures and such) | |
26 | * 2 - Per SCQ scq spinlock | |
27 | * 3 - Per card resource spinlock (to access registers, etc.) | |
28 | * | |
29 | * These must NEVER be grabbed in reverse order. | |
30 | * | |
098fde11 | 31 | */ |
1da177e4 | 32 | |
098fde11 | 33 | /* Header files */ |
1da177e4 LT |
34 | |
35 | #include <linux/module.h> | |
1da177e4 LT |
36 | #include <linux/kernel.h> |
37 | #include <linux/skbuff.h> | |
38 | #include <linux/atmdev.h> | |
39 | #include <linux/atm.h> | |
40 | #include <linux/pci.h> | |
864a3ff6 | 41 | #include <linux/dma-mapping.h> |
1da177e4 LT |
42 | #include <linux/types.h> |
43 | #include <linux/string.h> | |
44 | #include <linux/delay.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/sched.h> | |
47 | #include <linux/timer.h> | |
48 | #include <linux/interrupt.h> | |
49 | #include <linux/bitops.h> | |
5a0e3ad6 | 50 | #include <linux/slab.h> |
864a3ff6 | 51 | #include <linux/idr.h> |
1da177e4 LT |
52 | #include <asm/io.h> |
53 | #include <asm/uaccess.h> | |
60063497 | 54 | #include <linux/atomic.h> |
1da177e4 LT |
55 | #include "nicstar.h" |
56 | #ifdef CONFIG_ATM_NICSTAR_USE_SUNI | |
57 | #include "suni.h" | |
58 | #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ | |
59 | #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 | |
60 | #include "idt77105.h" | |
61 | #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ | |
62 | ||
098fde11 | 63 | /* Additional code */ |
1da177e4 LT |
64 | |
65 | #include "nicstarmac.c" | |
66 | ||
098fde11 | 67 | /* Configurable parameters */ |
1da177e4 LT |
68 | |
69 | #undef PHY_LOOPBACK | |
70 | #undef TX_DEBUG | |
71 | #undef RX_DEBUG | |
72 | #undef GENERAL_DEBUG | |
73 | #undef EXTRA_DEBUG | |
74 | ||
098fde11 C |
75 | #undef NS_USE_DESTRUCTORS /* For now keep this undefined unless you know |
76 | you're going to use only raw ATM */ | |
1da177e4 | 77 | |
098fde11 | 78 | /* Do not touch these */ |
1da177e4 LT |
79 | |
80 | #ifdef TX_DEBUG | |
81 | #define TXPRINTK(args...) printk(args) | |
82 | #else | |
83 | #define TXPRINTK(args...) | |
84 | #endif /* TX_DEBUG */ | |
85 | ||
86 | #ifdef RX_DEBUG | |
87 | #define RXPRINTK(args...) printk(args) | |
88 | #else | |
89 | #define RXPRINTK(args...) | |
90 | #endif /* RX_DEBUG */ | |
91 | ||
92 | #ifdef GENERAL_DEBUG | |
93 | #define PRINTK(args...) printk(args) | |
94 | #else | |
95 | #define PRINTK(args...) | |
96 | #endif /* GENERAL_DEBUG */ | |
97 | ||
98 | #ifdef EXTRA_DEBUG | |
99 | #define XPRINTK(args...) printk(args) | |
100 | #else | |
101 | #define XPRINTK(args...) | |
102 | #endif /* EXTRA_DEBUG */ | |
103 | ||
098fde11 | 104 | /* Macros */ |
1da177e4 LT |
105 | |
106 | #define CMD_BUSY(card) (readl((card)->membase + STAT) & NS_STAT_CMDBZ) | |
107 | ||
108 | #define NS_DELAY mdelay(1) | |
109 | ||
864a3ff6 | 110 | #define PTR_DIFF(a, b) ((u32)((unsigned long)(a) - (unsigned long)(b))) |
1da177e4 LT |
111 | |
112 | #ifndef ATM_SKB | |
113 | #define ATM_SKB(s) (&(s)->atm) | |
114 | #endif | |
115 | ||
864a3ff6 C |
116 | #define scq_virt_to_bus(scq, p) \ |
117 | (scq->dma + ((unsigned long)(p) - (unsigned long)(scq)->org)) | |
118 | ||
098fde11 | 119 | /* Function declarations */ |
1da177e4 | 120 | |
098fde11 C |
121 | static u32 ns_read_sram(ns_dev * card, u32 sram_address); |
122 | static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, | |
123 | int count); | |
6c44512d GKH |
124 | static int ns_init_card(int i, struct pci_dev *pcidev); |
125 | static void ns_init_card_error(ns_dev * card, int error); | |
864a3ff6 C |
126 | static scq_info *get_scq(ns_dev *card, int size, u32 scd); |
127 | static void free_scq(ns_dev *card, scq_info * scq, struct atm_vcc *vcc); | |
8728b834 | 128 | static void push_rxbufs(ns_dev *, struct sk_buff *); |
7d12e780 | 129 | static irqreturn_t ns_irq_handler(int irq, void *dev_id); |
1da177e4 LT |
130 | static int ns_open(struct atm_vcc *vcc); |
131 | static void ns_close(struct atm_vcc *vcc); | |
098fde11 | 132 | static void fill_tst(ns_dev * card, int n, vc_map * vc); |
1da177e4 | 133 | static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb); |
098fde11 C |
134 | static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, |
135 | struct sk_buff *skb); | |
136 | static void process_tsq(ns_dev * card); | |
137 | static void drain_scq(ns_dev * card, scq_info * scq, int pos); | |
138 | static void process_rsq(ns_dev * card); | |
139 | static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe); | |
1da177e4 LT |
140 | #ifdef NS_USE_DESTRUCTORS |
141 | static void ns_sb_destructor(struct sk_buff *sb); | |
142 | static void ns_lb_destructor(struct sk_buff *lb); | |
143 | static void ns_hb_destructor(struct sk_buff *hb); | |
144 | #endif /* NS_USE_DESTRUCTORS */ | |
098fde11 C |
145 | static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb); |
146 | static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count); | |
147 | static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb); | |
148 | static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb); | |
149 | static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb); | |
150 | static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page); | |
151 | static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg); | |
864a3ff6 | 152 | #ifdef EXTRA_DEBUG |
098fde11 | 153 | static void which_list(ns_dev * card, struct sk_buff *skb); |
864a3ff6 | 154 | #endif |
1da177e4 | 155 | static void ns_poll(unsigned long arg); |
1da177e4 | 156 | static void ns_phy_put(struct atm_dev *dev, unsigned char value, |
098fde11 | 157 | unsigned long addr); |
1da177e4 LT |
158 | static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr); |
159 | ||
098fde11 | 160 | /* Global variables */ |
1da177e4 LT |
161 | |
162 | static struct ns_dev *cards[NS_MAX_CARDS]; | |
163 | static unsigned num_cards; | |
098fde11 C |
164 | static struct atmdev_ops atm_ops = { |
165 | .open = ns_open, | |
166 | .close = ns_close, | |
167 | .ioctl = ns_ioctl, | |
168 | .send = ns_send, | |
169 | .phy_put = ns_phy_put, | |
170 | .phy_get = ns_phy_get, | |
171 | .proc_read = ns_proc_read, | |
172 | .owner = THIS_MODULE, | |
1da177e4 | 173 | }; |
098fde11 | 174 | |
1da177e4 LT |
175 | static struct timer_list ns_timer; |
176 | static char *mac[NS_MAX_CARDS]; | |
177 | module_param_array(mac, charp, NULL, 0); | |
178 | MODULE_LICENSE("GPL"); | |
179 | ||
098fde11 | 180 | /* Functions */ |
1da177e4 | 181 | |
6c44512d GKH |
182 | static int nicstar_init_one(struct pci_dev *pcidev, |
183 | const struct pci_device_id *ent) | |
1da177e4 | 184 | { |
098fde11 C |
185 | static int index = -1; |
186 | unsigned int error; | |
1da177e4 | 187 | |
098fde11 C |
188 | index++; |
189 | cards[index] = NULL; | |
1da177e4 | 190 | |
098fde11 C |
191 | error = ns_init_card(index, pcidev); |
192 | if (error) { | |
193 | cards[index--] = NULL; /* don't increment index */ | |
194 | goto err_out; | |
195 | } | |
1da177e4 | 196 | |
098fde11 | 197 | return 0; |
1da177e4 | 198 | err_out: |
098fde11 | 199 | return -ENODEV; |
1da177e4 LT |
200 | } |
201 | ||
6c44512d | 202 | static void nicstar_remove_one(struct pci_dev *pcidev) |
1da177e4 | 203 | { |
098fde11 C |
204 | int i, j; |
205 | ns_dev *card = pci_get_drvdata(pcidev); | |
206 | struct sk_buff *hb; | |
207 | struct sk_buff *iovb; | |
208 | struct sk_buff *lb; | |
209 | struct sk_buff *sb; | |
210 | ||
211 | i = card->index; | |
212 | ||
213 | if (cards[i] == NULL) | |
214 | return; | |
215 | ||
216 | if (card->atmdev->phy && card->atmdev->phy->stop) | |
217 | card->atmdev->phy->stop(card->atmdev); | |
218 | ||
219 | /* Stop everything */ | |
220 | writel(0x00000000, card->membase + CFG); | |
221 | ||
222 | /* De-register device */ | |
223 | atm_dev_deregister(card->atmdev); | |
224 | ||
225 | /* Disable PCI device */ | |
226 | pci_disable_device(pcidev); | |
227 | ||
228 | /* Free up resources */ | |
229 | j = 0; | |
230 | PRINTK("nicstar%d: freeing %d huge buffers.\n", i, card->hbpool.count); | |
231 | while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) { | |
232 | dev_kfree_skb_any(hb); | |
233 | j++; | |
234 | } | |
235 | PRINTK("nicstar%d: %d huge buffers freed.\n", i, j); | |
236 | j = 0; | |
237 | PRINTK("nicstar%d: freeing %d iovec buffers.\n", i, | |
238 | card->iovpool.count); | |
239 | while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) { | |
240 | dev_kfree_skb_any(iovb); | |
241 | j++; | |
242 | } | |
243 | PRINTK("nicstar%d: %d iovec buffers freed.\n", i, j); | |
244 | while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) | |
245 | dev_kfree_skb_any(lb); | |
246 | while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) | |
247 | dev_kfree_skb_any(sb); | |
864a3ff6 | 248 | free_scq(card, card->scq0, NULL); |
098fde11 C |
249 | for (j = 0; j < NS_FRSCD_NUM; j++) { |
250 | if (card->scd2vc[j] != NULL) | |
864a3ff6 C |
251 | free_scq(card, card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc); |
252 | } | |
864a3ff6 C |
253 | idr_destroy(&card->idr); |
254 | pci_free_consistent(card->pcidev, NS_RSQSIZE + NS_RSQ_ALIGNMENT, | |
255 | card->rsq.org, card->rsq.dma); | |
256 | pci_free_consistent(card->pcidev, NS_TSQSIZE + NS_TSQ_ALIGNMENT, | |
257 | card->tsq.org, card->tsq.dma); | |
098fde11 C |
258 | free_irq(card->pcidev->irq, card); |
259 | iounmap(card->membase); | |
260 | kfree(card); | |
1da177e4 LT |
261 | } |
262 | ||
6c44512d | 263 | static struct pci_device_id nicstar_pci_tbl[] = { |
6df7b80c | 264 | { PCI_VDEVICE(IDT, PCI_DEVICE_ID_IDT_IDT77201), 0 }, |
1da177e4 LT |
265 | {0,} /* terminate list */ |
266 | }; | |
1da177e4 | 267 | |
098fde11 | 268 | MODULE_DEVICE_TABLE(pci, nicstar_pci_tbl); |
1da177e4 LT |
269 | |
270 | static struct pci_driver nicstar_driver = { | |
098fde11 C |
271 | .name = "nicstar", |
272 | .id_table = nicstar_pci_tbl, | |
273 | .probe = nicstar_init_one, | |
6c44512d | 274 | .remove = nicstar_remove_one, |
1da177e4 LT |
275 | }; |
276 | ||
1da177e4 LT |
277 | static int __init nicstar_init(void) |
278 | { | |
098fde11 | 279 | unsigned error = 0; /* Initialized to remove compile warning */ |
1da177e4 | 280 | |
098fde11 | 281 | XPRINTK("nicstar: nicstar_init() called.\n"); |
1da177e4 | 282 | |
098fde11 C |
283 | error = pci_register_driver(&nicstar_driver); |
284 | ||
285 | TXPRINTK("nicstar: TX debug enabled.\n"); | |
286 | RXPRINTK("nicstar: RX debug enabled.\n"); | |
287 | PRINTK("nicstar: General debug enabled.\n"); | |
1da177e4 | 288 | #ifdef PHY_LOOPBACK |
098fde11 | 289 | printk("nicstar: using PHY loopback.\n"); |
1da177e4 | 290 | #endif /* PHY_LOOPBACK */ |
098fde11 | 291 | XPRINTK("nicstar: nicstar_init() returned.\n"); |
1da177e4 | 292 | |
098fde11 C |
293 | if (!error) { |
294 | init_timer(&ns_timer); | |
295 | ns_timer.expires = jiffies + NS_POLL_PERIOD; | |
296 | ns_timer.data = 0UL; | |
297 | ns_timer.function = ns_poll; | |
298 | add_timer(&ns_timer); | |
299 | } | |
1da177e4 | 300 | |
098fde11 C |
301 | return error; |
302 | } | |
1da177e4 LT |
303 | |
304 | static void __exit nicstar_cleanup(void) | |
305 | { | |
098fde11 | 306 | XPRINTK("nicstar: nicstar_cleanup() called.\n"); |
1da177e4 | 307 | |
098fde11 | 308 | del_timer(&ns_timer); |
1da177e4 | 309 | |
098fde11 | 310 | pci_unregister_driver(&nicstar_driver); |
1da177e4 | 311 | |
098fde11 | 312 | XPRINTK("nicstar: nicstar_cleanup() returned.\n"); |
1da177e4 LT |
313 | } |
314 | ||
098fde11 | 315 | static u32 ns_read_sram(ns_dev * card, u32 sram_address) |
1da177e4 | 316 | { |
098fde11 C |
317 | unsigned long flags; |
318 | u32 data; | |
319 | sram_address <<= 2; | |
320 | sram_address &= 0x0007FFFC; /* address must be dword aligned */ | |
321 | sram_address |= 0x50000000; /* SRAM read command */ | |
322 | spin_lock_irqsave(&card->res_lock, flags); | |
323 | while (CMD_BUSY(card)) ; | |
324 | writel(sram_address, card->membase + CMD); | |
325 | while (CMD_BUSY(card)) ; | |
326 | data = readl(card->membase + DR0); | |
327 | spin_unlock_irqrestore(&card->res_lock, flags); | |
328 | return data; | |
1da177e4 LT |
329 | } |
330 | ||
098fde11 C |
331 | static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, |
332 | int count) | |
1da177e4 | 333 | { |
098fde11 C |
334 | unsigned long flags; |
335 | int i, c; | |
336 | count--; /* count range now is 0..3 instead of 1..4 */ | |
337 | c = count; | |
338 | c <<= 2; /* to use increments of 4 */ | |
339 | spin_lock_irqsave(&card->res_lock, flags); | |
340 | while (CMD_BUSY(card)) ; | |
341 | for (i = 0; i <= c; i += 4) | |
342 | writel(*(value++), card->membase + i); | |
343 | /* Note: DR# registers are the first 4 dwords in nicstar's memspace, | |
344 | so card->membase + DR0 == card->membase */ | |
345 | sram_address <<= 2; | |
346 | sram_address &= 0x0007FFFC; | |
347 | sram_address |= (0x40000000 | count); | |
348 | writel(sram_address, card->membase + CMD); | |
349 | spin_unlock_irqrestore(&card->res_lock, flags); | |
1da177e4 LT |
350 | } |
351 | ||
6c44512d | 352 | static int ns_init_card(int i, struct pci_dev *pcidev) |
1da177e4 | 353 | { |
098fde11 C |
354 | int j; |
355 | struct ns_dev *card = NULL; | |
356 | unsigned char pci_latency; | |
357 | unsigned error; | |
358 | u32 data; | |
359 | u32 u32d[4]; | |
360 | u32 ns_cfg_rctsize; | |
361 | int bcount; | |
362 | unsigned long membase; | |
363 | ||
364 | error = 0; | |
365 | ||
366 | if (pci_enable_device(pcidev)) { | |
367 | printk("nicstar%d: can't enable PCI device\n", i); | |
368 | error = 2; | |
369 | ns_init_card_error(card, error); | |
370 | return error; | |
371 | } | |
864a3ff6 C |
372 | if ((pci_set_dma_mask(pcidev, DMA_BIT_MASK(32)) != 0) || |
373 | (pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32)) != 0)) { | |
374 | printk(KERN_WARNING | |
375 | "nicstar%d: No suitable DMA available.\n", i); | |
376 | error = 2; | |
377 | ns_init_card_error(card, error); | |
378 | return error; | |
379 | } | |
098fde11 C |
380 | |
381 | if ((card = kmalloc(sizeof(ns_dev), GFP_KERNEL)) == NULL) { | |
382 | printk | |
383 | ("nicstar%d: can't allocate memory for device structure.\n", | |
384 | i); | |
385 | error = 2; | |
386 | ns_init_card_error(card, error); | |
387 | return error; | |
388 | } | |
389 | cards[i] = card; | |
390 | spin_lock_init(&card->int_lock); | |
391 | spin_lock_init(&card->res_lock); | |
392 | ||
393 | pci_set_drvdata(pcidev, card); | |
394 | ||
395 | card->index = i; | |
396 | card->atmdev = NULL; | |
397 | card->pcidev = pcidev; | |
398 | membase = pci_resource_start(pcidev, 1); | |
399 | card->membase = ioremap(membase, NS_IOREMAP_SIZE); | |
400 | if (!card->membase) { | |
401 | printk("nicstar%d: can't ioremap() membase.\n", i); | |
402 | error = 3; | |
403 | ns_init_card_error(card, error); | |
404 | return error; | |
405 | } | |
864a3ff6 | 406 | PRINTK("nicstar%d: membase at 0x%p.\n", i, card->membase); |
098fde11 C |
407 | |
408 | pci_set_master(pcidev); | |
409 | ||
410 | if (pci_read_config_byte(pcidev, PCI_LATENCY_TIMER, &pci_latency) != 0) { | |
411 | printk("nicstar%d: can't read PCI latency timer.\n", i); | |
412 | error = 6; | |
413 | ns_init_card_error(card, error); | |
414 | return error; | |
415 | } | |
1da177e4 | 416 | #ifdef NS_PCI_LATENCY |
098fde11 C |
417 | if (pci_latency < NS_PCI_LATENCY) { |
418 | PRINTK("nicstar%d: setting PCI latency timer to %d.\n", i, | |
419 | NS_PCI_LATENCY); | |
420 | for (j = 1; j < 4; j++) { | |
421 | if (pci_write_config_byte | |
422 | (pcidev, PCI_LATENCY_TIMER, NS_PCI_LATENCY) != 0) | |
423 | break; | |
424 | } | |
425 | if (j == 4) { | |
426 | printk | |
427 | ("nicstar%d: can't set PCI latency timer to %d.\n", | |
428 | i, NS_PCI_LATENCY); | |
429 | error = 7; | |
430 | ns_init_card_error(card, error); | |
431 | return error; | |
432 | } | |
433 | } | |
1da177e4 | 434 | #endif /* NS_PCI_LATENCY */ |
098fde11 C |
435 | |
436 | /* Clear timer overflow */ | |
437 | data = readl(card->membase + STAT); | |
438 | if (data & NS_STAT_TMROF) | |
439 | writel(NS_STAT_TMROF, card->membase + STAT); | |
440 | ||
441 | /* Software reset */ | |
442 | writel(NS_CFG_SWRST, card->membase + CFG); | |
443 | NS_DELAY; | |
444 | writel(0x00000000, card->membase + CFG); | |
445 | ||
446 | /* PHY reset */ | |
447 | writel(0x00000008, card->membase + GP); | |
448 | NS_DELAY; | |
449 | writel(0x00000001, card->membase + GP); | |
450 | NS_DELAY; | |
451 | while (CMD_BUSY(card)) ; | |
452 | writel(NS_CMD_WRITE_UTILITY | 0x00000100, card->membase + CMD); /* Sync UTOPIA with SAR clock */ | |
453 | NS_DELAY; | |
454 | ||
455 | /* Detect PHY type */ | |
456 | while (CMD_BUSY(card)) ; | |
457 | writel(NS_CMD_READ_UTILITY | 0x00000200, card->membase + CMD); | |
458 | while (CMD_BUSY(card)) ; | |
459 | data = readl(card->membase + DR0); | |
460 | switch (data) { | |
461 | case 0x00000009: | |
462 | printk("nicstar%d: PHY seems to be 25 Mbps.\n", i); | |
463 | card->max_pcr = ATM_25_PCR; | |
464 | while (CMD_BUSY(card)) ; | |
465 | writel(0x00000008, card->membase + DR0); | |
466 | writel(NS_CMD_WRITE_UTILITY | 0x00000200, card->membase + CMD); | |
467 | /* Clear an eventual pending interrupt */ | |
468 | writel(NS_STAT_SFBQF, card->membase + STAT); | |
1da177e4 | 469 | #ifdef PHY_LOOPBACK |
098fde11 C |
470 | while (CMD_BUSY(card)) ; |
471 | writel(0x00000022, card->membase + DR0); | |
472 | writel(NS_CMD_WRITE_UTILITY | 0x00000202, card->membase + CMD); | |
1da177e4 | 473 | #endif /* PHY_LOOPBACK */ |
098fde11 C |
474 | break; |
475 | case 0x00000030: | |
476 | case 0x00000031: | |
477 | printk("nicstar%d: PHY seems to be 155 Mbps.\n", i); | |
478 | card->max_pcr = ATM_OC3_PCR; | |
1da177e4 | 479 | #ifdef PHY_LOOPBACK |
098fde11 C |
480 | while (CMD_BUSY(card)) ; |
481 | writel(0x00000002, card->membase + DR0); | |
482 | writel(NS_CMD_WRITE_UTILITY | 0x00000205, card->membase + CMD); | |
1da177e4 | 483 | #endif /* PHY_LOOPBACK */ |
098fde11 C |
484 | break; |
485 | default: | |
486 | printk("nicstar%d: unknown PHY type (0x%08X).\n", i, data); | |
487 | error = 8; | |
488 | ns_init_card_error(card, error); | |
489 | return error; | |
490 | } | |
491 | writel(0x00000000, card->membase + GP); | |
492 | ||
493 | /* Determine SRAM size */ | |
494 | data = 0x76543210; | |
495 | ns_write_sram(card, 0x1C003, &data, 1); | |
496 | data = 0x89ABCDEF; | |
497 | ns_write_sram(card, 0x14003, &data, 1); | |
498 | if (ns_read_sram(card, 0x14003) == 0x89ABCDEF && | |
499 | ns_read_sram(card, 0x1C003) == 0x76543210) | |
500 | card->sram_size = 128; | |
501 | else | |
502 | card->sram_size = 32; | |
503 | PRINTK("nicstar%d: %dK x 32bit SRAM size.\n", i, card->sram_size); | |
504 | ||
505 | card->rct_size = NS_MAX_RCTSIZE; | |
1da177e4 LT |
506 | |
507 | #if (NS_MAX_RCTSIZE == 4096) | |
098fde11 C |
508 | if (card->sram_size == 128) |
509 | printk | |
510 | ("nicstar%d: limiting maximum VCI. See NS_MAX_RCTSIZE in nicstar.h\n", | |
511 | i); | |
1da177e4 | 512 | #elif (NS_MAX_RCTSIZE == 16384) |
098fde11 C |
513 | if (card->sram_size == 32) { |
514 | printk | |
515 | ("nicstar%d: wasting memory. See NS_MAX_RCTSIZE in nicstar.h\n", | |
516 | i); | |
517 | card->rct_size = 4096; | |
518 | } | |
1da177e4 LT |
519 | #else |
520 | #error NS_MAX_RCTSIZE must be either 4096 or 16384 in nicstar.c | |
521 | #endif | |
522 | ||
098fde11 C |
523 | card->vpibits = NS_VPIBITS; |
524 | if (card->rct_size == 4096) | |
525 | card->vcibits = 12 - NS_VPIBITS; | |
526 | else /* card->rct_size == 16384 */ | |
527 | card->vcibits = 14 - NS_VPIBITS; | |
528 | ||
529 | /* Initialize the nicstar eeprom/eprom stuff, for the MAC addr */ | |
530 | if (mac[i] == NULL) | |
531 | nicstar_init_eprom(card->membase); | |
532 | ||
533 | /* Set the VPI/VCI MSb mask to zero so we can receive OAM cells */ | |
534 | writel(0x00000000, card->membase + VPM); | |
535 | ||
536 | /* Initialize TSQ */ | |
864a3ff6 C |
537 | card->tsq.org = pci_alloc_consistent(card->pcidev, |
538 | NS_TSQSIZE + NS_TSQ_ALIGNMENT, | |
539 | &card->tsq.dma); | |
098fde11 C |
540 | if (card->tsq.org == NULL) { |
541 | printk("nicstar%d: can't allocate TSQ.\n", i); | |
542 | error = 10; | |
543 | ns_init_card_error(card, error); | |
544 | return error; | |
545 | } | |
864a3ff6 | 546 | card->tsq.base = PTR_ALIGN(card->tsq.org, NS_TSQ_ALIGNMENT); |
098fde11 C |
547 | card->tsq.next = card->tsq.base; |
548 | card->tsq.last = card->tsq.base + (NS_TSQ_NUM_ENTRIES - 1); | |
549 | for (j = 0; j < NS_TSQ_NUM_ENTRIES; j++) | |
550 | ns_tsi_init(card->tsq.base + j); | |
551 | writel(0x00000000, card->membase + TSQH); | |
864a3ff6 C |
552 | writel(ALIGN(card->tsq.dma, NS_TSQ_ALIGNMENT), card->membase + TSQB); |
553 | PRINTK("nicstar%d: TSQ base at 0x%p.\n", i, card->tsq.base); | |
098fde11 C |
554 | |
555 | /* Initialize RSQ */ | |
864a3ff6 C |
556 | card->rsq.org = pci_alloc_consistent(card->pcidev, |
557 | NS_RSQSIZE + NS_RSQ_ALIGNMENT, | |
558 | &card->rsq.dma); | |
098fde11 C |
559 | if (card->rsq.org == NULL) { |
560 | printk("nicstar%d: can't allocate RSQ.\n", i); | |
561 | error = 11; | |
562 | ns_init_card_error(card, error); | |
563 | return error; | |
564 | } | |
864a3ff6 | 565 | card->rsq.base = PTR_ALIGN(card->rsq.org, NS_RSQ_ALIGNMENT); |
098fde11 C |
566 | card->rsq.next = card->rsq.base; |
567 | card->rsq.last = card->rsq.base + (NS_RSQ_NUM_ENTRIES - 1); | |
568 | for (j = 0; j < NS_RSQ_NUM_ENTRIES; j++) | |
569 | ns_rsqe_init(card->rsq.base + j); | |
570 | writel(0x00000000, card->membase + RSQH); | |
864a3ff6 C |
571 | writel(ALIGN(card->rsq.dma, NS_RSQ_ALIGNMENT), card->membase + RSQB); |
572 | PRINTK("nicstar%d: RSQ base at 0x%p.\n", i, card->rsq.base); | |
098fde11 C |
573 | |
574 | /* Initialize SCQ0, the only VBR SCQ used */ | |
575 | card->scq1 = NULL; | |
576 | card->scq2 = NULL; | |
864a3ff6 | 577 | card->scq0 = get_scq(card, VBR_SCQSIZE, NS_VRSCD0); |
098fde11 C |
578 | if (card->scq0 == NULL) { |
579 | printk("nicstar%d: can't get SCQ0.\n", i); | |
580 | error = 12; | |
581 | ns_init_card_error(card, error); | |
582 | return error; | |
583 | } | |
864a3ff6 | 584 | u32d[0] = scq_virt_to_bus(card->scq0, card->scq0->base); |
098fde11 C |
585 | u32d[1] = (u32) 0x00000000; |
586 | u32d[2] = (u32) 0xffffffff; | |
587 | u32d[3] = (u32) 0x00000000; | |
588 | ns_write_sram(card, NS_VRSCD0, u32d, 4); | |
589 | ns_write_sram(card, NS_VRSCD1, u32d, 4); /* These last two won't be used */ | |
590 | ns_write_sram(card, NS_VRSCD2, u32d, 4); /* but are initialized, just in case... */ | |
591 | card->scq0->scd = NS_VRSCD0; | |
864a3ff6 | 592 | PRINTK("nicstar%d: VBR-SCQ0 base at 0x%p.\n", i, card->scq0->base); |
098fde11 C |
593 | |
594 | /* Initialize TSTs */ | |
595 | card->tst_addr = NS_TST0; | |
596 | card->tst_free_entries = NS_TST_NUM_ENTRIES; | |
597 | data = NS_TST_OPCODE_VARIABLE; | |
598 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) | |
599 | ns_write_sram(card, NS_TST0 + j, &data, 1); | |
600 | data = ns_tste_make(NS_TST_OPCODE_END, NS_TST0); | |
601 | ns_write_sram(card, NS_TST0 + NS_TST_NUM_ENTRIES, &data, 1); | |
602 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) | |
603 | ns_write_sram(card, NS_TST1 + j, &data, 1); | |
604 | data = ns_tste_make(NS_TST_OPCODE_END, NS_TST1); | |
605 | ns_write_sram(card, NS_TST1 + NS_TST_NUM_ENTRIES, &data, 1); | |
606 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) | |
607 | card->tste2vc[j] = NULL; | |
608 | writel(NS_TST0 << 2, card->membase + TSTB); | |
609 | ||
610 | /* Initialize RCT. AAL type is set on opening the VC. */ | |
1da177e4 | 611 | #ifdef RCQ_SUPPORT |
098fde11 | 612 | u32d[0] = NS_RCTE_RAWCELLINTEN; |
1da177e4 | 613 | #else |
098fde11 | 614 | u32d[0] = 0x00000000; |
1da177e4 | 615 | #endif /* RCQ_SUPPORT */ |
098fde11 C |
616 | u32d[1] = 0x00000000; |
617 | u32d[2] = 0x00000000; | |
618 | u32d[3] = 0xFFFFFFFF; | |
619 | for (j = 0; j < card->rct_size; j++) | |
620 | ns_write_sram(card, j * 4, u32d, 4); | |
621 | ||
622 | memset(card->vcmap, 0, NS_MAX_RCTSIZE * sizeof(vc_map)); | |
623 | ||
624 | for (j = 0; j < NS_FRSCD_NUM; j++) | |
625 | card->scd2vc[j] = NULL; | |
626 | ||
627 | /* Initialize buffer levels */ | |
628 | card->sbnr.min = MIN_SB; | |
629 | card->sbnr.init = NUM_SB; | |
630 | card->sbnr.max = MAX_SB; | |
631 | card->lbnr.min = MIN_LB; | |
632 | card->lbnr.init = NUM_LB; | |
633 | card->lbnr.max = MAX_LB; | |
634 | card->iovnr.min = MIN_IOVB; | |
635 | card->iovnr.init = NUM_IOVB; | |
636 | card->iovnr.max = MAX_IOVB; | |
637 | card->hbnr.min = MIN_HB; | |
638 | card->hbnr.init = NUM_HB; | |
639 | card->hbnr.max = MAX_HB; | |
640 | ||
641 | card->sm_handle = 0x00000000; | |
642 | card->sm_addr = 0x00000000; | |
643 | card->lg_handle = 0x00000000; | |
644 | card->lg_addr = 0x00000000; | |
645 | ||
646 | card->efbie = 1; /* To prevent push_rxbufs from enabling the interrupt */ | |
647 | ||
864a3ff6 C |
648 | idr_init(&card->idr); |
649 | ||
098fde11 C |
650 | /* Pre-allocate some huge buffers */ |
651 | skb_queue_head_init(&card->hbpool.queue); | |
652 | card->hbpool.count = 0; | |
653 | for (j = 0; j < NUM_HB; j++) { | |
654 | struct sk_buff *hb; | |
655 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); | |
656 | if (hb == NULL) { | |
657 | printk | |
658 | ("nicstar%d: can't allocate %dth of %d huge buffers.\n", | |
659 | i, j, NUM_HB); | |
660 | error = 13; | |
661 | ns_init_card_error(card, error); | |
662 | return error; | |
663 | } | |
864a3ff6 | 664 | NS_PRV_BUFTYPE(hb) = BUF_NONE; |
098fde11 C |
665 | skb_queue_tail(&card->hbpool.queue, hb); |
666 | card->hbpool.count++; | |
667 | } | |
668 | ||
669 | /* Allocate large buffers */ | |
670 | skb_queue_head_init(&card->lbpool.queue); | |
671 | card->lbpool.count = 0; /* Not used */ | |
672 | for (j = 0; j < NUM_LB; j++) { | |
673 | struct sk_buff *lb; | |
674 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); | |
675 | if (lb == NULL) { | |
676 | printk | |
677 | ("nicstar%d: can't allocate %dth of %d large buffers.\n", | |
678 | i, j, NUM_LB); | |
679 | error = 14; | |
680 | ns_init_card_error(card, error); | |
681 | return error; | |
682 | } | |
864a3ff6 | 683 | NS_PRV_BUFTYPE(lb) = BUF_LG; |
098fde11 C |
684 | skb_queue_tail(&card->lbpool.queue, lb); |
685 | skb_reserve(lb, NS_SMBUFSIZE); | |
686 | push_rxbufs(card, lb); | |
687 | /* Due to the implementation of push_rxbufs() this is 1, not 0 */ | |
688 | if (j == 1) { | |
689 | card->rcbuf = lb; | |
864a3ff6 C |
690 | card->rawcell = (struct ns_rcqe *) lb->data; |
691 | card->rawch = NS_PRV_DMA(lb); | |
098fde11 C |
692 | } |
693 | } | |
694 | /* Test for strange behaviour which leads to crashes */ | |
695 | if ((bcount = | |
696 | ns_stat_lfbqc_get(readl(card->membase + STAT))) < card->lbnr.min) { | |
697 | printk | |
698 | ("nicstar%d: Strange... Just allocated %d large buffers and lfbqc = %d.\n", | |
699 | i, j, bcount); | |
700 | error = 14; | |
701 | ns_init_card_error(card, error); | |
702 | return error; | |
703 | } | |
704 | ||
705 | /* Allocate small buffers */ | |
706 | skb_queue_head_init(&card->sbpool.queue); | |
707 | card->sbpool.count = 0; /* Not used */ | |
708 | for (j = 0; j < NUM_SB; j++) { | |
709 | struct sk_buff *sb; | |
710 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); | |
711 | if (sb == NULL) { | |
712 | printk | |
713 | ("nicstar%d: can't allocate %dth of %d small buffers.\n", | |
714 | i, j, NUM_SB); | |
715 | error = 15; | |
716 | ns_init_card_error(card, error); | |
717 | return error; | |
718 | } | |
864a3ff6 | 719 | NS_PRV_BUFTYPE(sb) = BUF_SM; |
098fde11 C |
720 | skb_queue_tail(&card->sbpool.queue, sb); |
721 | skb_reserve(sb, NS_AAL0_HEADER); | |
722 | push_rxbufs(card, sb); | |
723 | } | |
724 | /* Test for strange behaviour which leads to crashes */ | |
725 | if ((bcount = | |
726 | ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min) { | |
727 | printk | |
728 | ("nicstar%d: Strange... Just allocated %d small buffers and sfbqc = %d.\n", | |
729 | i, j, bcount); | |
730 | error = 15; | |
731 | ns_init_card_error(card, error); | |
732 | return error; | |
733 | } | |
734 | ||
735 | /* Allocate iovec buffers */ | |
736 | skb_queue_head_init(&card->iovpool.queue); | |
737 | card->iovpool.count = 0; | |
738 | for (j = 0; j < NUM_IOVB; j++) { | |
739 | struct sk_buff *iovb; | |
740 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); | |
741 | if (iovb == NULL) { | |
742 | printk | |
743 | ("nicstar%d: can't allocate %dth of %d iovec buffers.\n", | |
744 | i, j, NUM_IOVB); | |
745 | error = 16; | |
746 | ns_init_card_error(card, error); | |
747 | return error; | |
748 | } | |
864a3ff6 | 749 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
750 | skb_queue_tail(&card->iovpool.queue, iovb); |
751 | card->iovpool.count++; | |
752 | } | |
753 | ||
754 | /* Configure NICStAR */ | |
755 | if (card->rct_size == 4096) | |
756 | ns_cfg_rctsize = NS_CFG_RCTSIZE_4096_ENTRIES; | |
757 | else /* (card->rct_size == 16384) */ | |
758 | ns_cfg_rctsize = NS_CFG_RCTSIZE_16384_ENTRIES; | |
759 | ||
760 | card->efbie = 1; | |
761 | ||
762 | card->intcnt = 0; | |
763 | if (request_irq | |
06df277a | 764 | (pcidev->irq, &ns_irq_handler, IRQF_SHARED, "nicstar", card) != 0) { |
098fde11 C |
765 | printk("nicstar%d: can't allocate IRQ %d.\n", i, pcidev->irq); |
766 | error = 9; | |
767 | ns_init_card_error(card, error); | |
768 | return error; | |
769 | } | |
770 | ||
771 | /* Register device */ | |
d9ca676b DW |
772 | card->atmdev = atm_dev_register("nicstar", &card->pcidev->dev, &atm_ops, |
773 | -1, NULL); | |
098fde11 C |
774 | if (card->atmdev == NULL) { |
775 | printk("nicstar%d: can't register device.\n", i); | |
776 | error = 17; | |
777 | ns_init_card_error(card, error); | |
778 | return error; | |
779 | } | |
780 | ||
d2bb3905 | 781 | if (mac[i] == NULL || !mac_pton(mac[i], card->atmdev->esi)) { |
098fde11 C |
782 | nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET, |
783 | card->atmdev->esi, 6); | |
784 | if (memcmp(card->atmdev->esi, "\x00\x00\x00\x00\x00\x00", 6) == | |
785 | 0) { | |
786 | nicstar_read_eprom(card->membase, | |
787 | NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT, | |
788 | card->atmdev->esi, 6); | |
789 | } | |
790 | } | |
791 | ||
792 | printk("nicstar%d: MAC address %pM\n", i, card->atmdev->esi); | |
793 | ||
794 | card->atmdev->dev_data = card; | |
795 | card->atmdev->ci_range.vpi_bits = card->vpibits; | |
796 | card->atmdev->ci_range.vci_bits = card->vcibits; | |
797 | card->atmdev->link_rate = card->max_pcr; | |
798 | card->atmdev->phy = NULL; | |
1da177e4 LT |
799 | |
800 | #ifdef CONFIG_ATM_NICSTAR_USE_SUNI | |
098fde11 C |
801 | if (card->max_pcr == ATM_OC3_PCR) |
802 | suni_init(card->atmdev); | |
1da177e4 LT |
803 | #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ |
804 | ||
805 | #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 | |
098fde11 C |
806 | if (card->max_pcr == ATM_25_PCR) |
807 | idt77105_init(card->atmdev); | |
1da177e4 LT |
808 | #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ |
809 | ||
098fde11 C |
810 | if (card->atmdev->phy && card->atmdev->phy->start) |
811 | card->atmdev->phy->start(card->atmdev); | |
1da177e4 | 812 | |
098fde11 C |
813 | writel(NS_CFG_RXPATH | NS_CFG_SMBUFSIZE | NS_CFG_LGBUFSIZE | NS_CFG_EFBIE | NS_CFG_RSQSIZE | NS_CFG_VPIBITS | ns_cfg_rctsize | NS_CFG_RXINT_NODELAY | NS_CFG_RAWIE | /* Only enabled if RCQ_SUPPORT */ |
814 | NS_CFG_RSQAFIE | NS_CFG_TXEN | NS_CFG_TXIE | NS_CFG_TSQFIE_OPT | /* Only enabled if ENABLE_TSQFIE */ | |
815 | NS_CFG_PHYIE, card->membase + CFG); | |
1da177e4 | 816 | |
098fde11 | 817 | num_cards++; |
1da177e4 | 818 | |
098fde11 | 819 | return error; |
1da177e4 LT |
820 | } |
821 | ||
6c44512d | 822 | static void ns_init_card_error(ns_dev *card, int error) |
098fde11 C |
823 | { |
824 | if (error >= 17) { | |
825 | writel(0x00000000, card->membase + CFG); | |
826 | } | |
827 | if (error >= 16) { | |
828 | struct sk_buff *iovb; | |
829 | while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) | |
830 | dev_kfree_skb_any(iovb); | |
831 | } | |
832 | if (error >= 15) { | |
833 | struct sk_buff *sb; | |
834 | while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) | |
835 | dev_kfree_skb_any(sb); | |
864a3ff6 | 836 | free_scq(card, card->scq0, NULL); |
098fde11 C |
837 | } |
838 | if (error >= 14) { | |
839 | struct sk_buff *lb; | |
840 | while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) | |
841 | dev_kfree_skb_any(lb); | |
842 | } | |
843 | if (error >= 13) { | |
844 | struct sk_buff *hb; | |
845 | while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) | |
846 | dev_kfree_skb_any(hb); | |
847 | } | |
848 | if (error >= 12) { | |
849 | kfree(card->rsq.org); | |
850 | } | |
851 | if (error >= 11) { | |
852 | kfree(card->tsq.org); | |
853 | } | |
854 | if (error >= 10) { | |
855 | free_irq(card->pcidev->irq, card); | |
856 | } | |
857 | if (error >= 4) { | |
858 | iounmap(card->membase); | |
859 | } | |
860 | if (error >= 3) { | |
861 | pci_disable_device(card->pcidev); | |
862 | kfree(card); | |
863 | } | |
864 | } | |
1da177e4 | 865 | |
864a3ff6 | 866 | static scq_info *get_scq(ns_dev *card, int size, u32 scd) |
1da177e4 | 867 | { |
098fde11 C |
868 | scq_info *scq; |
869 | int i; | |
870 | ||
871 | if (size != VBR_SCQSIZE && size != CBR_SCQSIZE) | |
872 | return NULL; | |
873 | ||
874 | scq = kmalloc(sizeof(scq_info), GFP_KERNEL); | |
864a3ff6 | 875 | if (!scq) |
098fde11 | 876 | return NULL; |
864a3ff6 C |
877 | scq->org = pci_alloc_consistent(card->pcidev, 2 * size, &scq->dma); |
878 | if (!scq->org) { | |
098fde11 C |
879 | kfree(scq); |
880 | return NULL; | |
881 | } | |
882 | scq->skb = kmalloc(sizeof(struct sk_buff *) * | |
883 | (size / NS_SCQE_SIZE), GFP_KERNEL); | |
864a3ff6 | 884 | if (!scq->skb) { |
098fde11 C |
885 | kfree(scq->org); |
886 | kfree(scq); | |
887 | return NULL; | |
888 | } | |
889 | scq->num_entries = size / NS_SCQE_SIZE; | |
864a3ff6 | 890 | scq->base = PTR_ALIGN(scq->org, size); |
098fde11 C |
891 | scq->next = scq->base; |
892 | scq->last = scq->base + (scq->num_entries - 1); | |
893 | scq->tail = scq->last; | |
894 | scq->scd = scd; | |
895 | scq->num_entries = size / NS_SCQE_SIZE; | |
896 | scq->tbd_count = 0; | |
897 | init_waitqueue_head(&scq->scqfull_waitq); | |
898 | scq->full = 0; | |
899 | spin_lock_init(&scq->lock); | |
900 | ||
901 | for (i = 0; i < scq->num_entries; i++) | |
902 | scq->skb[i] = NULL; | |
903 | ||
904 | return scq; | |
1da177e4 LT |
905 | } |
906 | ||
1da177e4 | 907 | /* For variable rate SCQ vcc must be NULL */ |
864a3ff6 | 908 | static void free_scq(ns_dev *card, scq_info *scq, struct atm_vcc *vcc) |
1da177e4 | 909 | { |
098fde11 C |
910 | int i; |
911 | ||
912 | if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) | |
913 | for (i = 0; i < scq->num_entries; i++) { | |
914 | if (scq->skb[i] != NULL) { | |
915 | vcc = ATM_SKB(scq->skb[i])->vcc; | |
916 | if (vcc->pop != NULL) | |
917 | vcc->pop(vcc, scq->skb[i]); | |
918 | else | |
919 | dev_kfree_skb_any(scq->skb[i]); | |
920 | } | |
921 | } else { /* vcc must be != NULL */ | |
922 | ||
923 | if (vcc == NULL) { | |
924 | printk | |
925 | ("nicstar: free_scq() called with vcc == NULL for fixed rate scq."); | |
926 | for (i = 0; i < scq->num_entries; i++) | |
927 | dev_kfree_skb_any(scq->skb[i]); | |
928 | } else | |
929 | for (i = 0; i < scq->num_entries; i++) { | |
930 | if (scq->skb[i] != NULL) { | |
931 | if (vcc->pop != NULL) | |
932 | vcc->pop(vcc, scq->skb[i]); | |
933 | else | |
934 | dev_kfree_skb_any(scq->skb[i]); | |
935 | } | |
936 | } | |
937 | } | |
938 | kfree(scq->skb); | |
864a3ff6 C |
939 | pci_free_consistent(card->pcidev, |
940 | 2 * (scq->num_entries == VBR_SCQ_NUM_ENTRIES ? | |
941 | VBR_SCQSIZE : CBR_SCQSIZE), | |
942 | scq->org, scq->dma); | |
098fde11 | 943 | kfree(scq); |
1da177e4 LT |
944 | } |
945 | ||
1da177e4 LT |
946 | /* The handles passed must be pointers to the sk_buff containing the small |
947 | or large buffer(s) cast to u32. */ | |
098fde11 | 948 | static void push_rxbufs(ns_dev * card, struct sk_buff *skb) |
1da177e4 | 949 | { |
864a3ff6 | 950 | struct sk_buff *handle1, *handle2; |
b051f6ed | 951 | int id1, id2; |
864a3ff6 | 952 | u32 addr1, addr2; |
098fde11 C |
953 | u32 stat; |
954 | unsigned long flags; | |
955 | ||
956 | /* *BARF* */ | |
864a3ff6 C |
957 | handle2 = NULL; |
958 | addr2 = 0; | |
959 | handle1 = skb; | |
960 | addr1 = pci_map_single(card->pcidev, | |
961 | skb->data, | |
962 | (NS_PRV_BUFTYPE(skb) == BUF_SM | |
963 | ? NS_SMSKBSIZE : NS_LGSKBSIZE), | |
964 | PCI_DMA_TODEVICE); | |
965 | NS_PRV_DMA(skb) = addr1; /* save so we can unmap later */ | |
1da177e4 LT |
966 | |
967 | #ifdef GENERAL_DEBUG | |
098fde11 C |
968 | if (!addr1) |
969 | printk("nicstar%d: push_rxbufs called with addr1 = 0.\n", | |
970 | card->index); | |
1da177e4 LT |
971 | #endif /* GENERAL_DEBUG */ |
972 | ||
098fde11 C |
973 | stat = readl(card->membase + STAT); |
974 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
975 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
864a3ff6 | 976 | if (NS_PRV_BUFTYPE(skb) == BUF_SM) { |
098fde11 C |
977 | if (!addr2) { |
978 | if (card->sm_addr) { | |
979 | addr2 = card->sm_addr; | |
980 | handle2 = card->sm_handle; | |
981 | card->sm_addr = 0x00000000; | |
982 | card->sm_handle = 0x00000000; | |
983 | } else { /* (!sm_addr) */ | |
984 | ||
985 | card->sm_addr = addr1; | |
986 | card->sm_handle = handle1; | |
987 | } | |
988 | } | |
989 | } else { /* buf_type == BUF_LG */ | |
990 | ||
991 | if (!addr2) { | |
992 | if (card->lg_addr) { | |
993 | addr2 = card->lg_addr; | |
994 | handle2 = card->lg_handle; | |
995 | card->lg_addr = 0x00000000; | |
996 | card->lg_handle = 0x00000000; | |
997 | } else { /* (!lg_addr) */ | |
998 | ||
999 | card->lg_addr = addr1; | |
1000 | card->lg_handle = handle1; | |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | if (addr2) { | |
864a3ff6 | 1006 | if (NS_PRV_BUFTYPE(skb) == BUF_SM) { |
098fde11 | 1007 | if (card->sbfqc >= card->sbnr.max) { |
864a3ff6 C |
1008 | skb_unlink(handle1, &card->sbpool.queue); |
1009 | dev_kfree_skb_any(handle1); | |
1010 | skb_unlink(handle2, &card->sbpool.queue); | |
1011 | dev_kfree_skb_any(handle2); | |
098fde11 C |
1012 | return; |
1013 | } else | |
1014 | card->sbfqc += 2; | |
1015 | } else { /* (buf_type == BUF_LG) */ | |
1016 | ||
1017 | if (card->lbfqc >= card->lbnr.max) { | |
864a3ff6 C |
1018 | skb_unlink(handle1, &card->lbpool.queue); |
1019 | dev_kfree_skb_any(handle1); | |
1020 | skb_unlink(handle2, &card->lbpool.queue); | |
1021 | dev_kfree_skb_any(handle2); | |
098fde11 C |
1022 | return; |
1023 | } else | |
1024 | card->lbfqc += 2; | |
1025 | } | |
1026 | ||
b051f6ed TH |
1027 | id1 = idr_alloc(&card->idr, handle1, 0, 0, GFP_ATOMIC); |
1028 | if (id1 < 0) | |
1029 | goto out; | |
098fde11 | 1030 | |
b051f6ed TH |
1031 | id2 = idr_alloc(&card->idr, handle2, 0, 0, GFP_ATOMIC); |
1032 | if (id2 < 0) | |
864a3ff6 C |
1033 | goto out; |
1034 | ||
1035 | spin_lock_irqsave(&card->res_lock, flags); | |
098fde11 C |
1036 | while (CMD_BUSY(card)) ; |
1037 | writel(addr2, card->membase + DR3); | |
864a3ff6 | 1038 | writel(id2, card->membase + DR2); |
098fde11 | 1039 | writel(addr1, card->membase + DR1); |
864a3ff6 C |
1040 | writel(id1, card->membase + DR0); |
1041 | writel(NS_CMD_WRITE_FREEBUFQ | NS_PRV_BUFTYPE(skb), | |
098fde11 | 1042 | card->membase + CMD); |
098fde11 C |
1043 | spin_unlock_irqrestore(&card->res_lock, flags); |
1044 | ||
1045 | XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n", | |
1046 | card->index, | |
864a3ff6 C |
1047 | (NS_PRV_BUFTYPE(skb) == BUF_SM ? "small" : "large"), |
1048 | addr1, addr2); | |
098fde11 C |
1049 | } |
1050 | ||
1051 | if (!card->efbie && card->sbfqc >= card->sbnr.min && | |
1052 | card->lbfqc >= card->lbnr.min) { | |
1053 | card->efbie = 1; | |
1054 | writel((readl(card->membase + CFG) | NS_CFG_EFBIE), | |
1055 | card->membase + CFG); | |
1056 | } | |
1057 | ||
864a3ff6 | 1058 | out: |
098fde11 | 1059 | return; |
1da177e4 LT |
1060 | } |
1061 | ||
7d12e780 | 1062 | static irqreturn_t ns_irq_handler(int irq, void *dev_id) |
1da177e4 | 1063 | { |
098fde11 C |
1064 | u32 stat_r; |
1065 | ns_dev *card; | |
1066 | struct atm_dev *dev; | |
1067 | unsigned long flags; | |
1068 | ||
1069 | card = (ns_dev *) dev_id; | |
1070 | dev = card->atmdev; | |
1071 | card->intcnt++; | |
1072 | ||
1073 | PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index); | |
1074 | ||
1075 | spin_lock_irqsave(&card->int_lock, flags); | |
1076 | ||
1077 | stat_r = readl(card->membase + STAT); | |
1078 | ||
1079 | /* Transmit Status Indicator has been written to T. S. Queue */ | |
1080 | if (stat_r & NS_STAT_TSIF) { | |
1081 | TXPRINTK("nicstar%d: TSI interrupt\n", card->index); | |
1082 | process_tsq(card); | |
1083 | writel(NS_STAT_TSIF, card->membase + STAT); | |
1084 | } | |
1085 | ||
1086 | /* Incomplete CS-PDU has been transmitted */ | |
1087 | if (stat_r & NS_STAT_TXICP) { | |
1088 | writel(NS_STAT_TXICP, card->membase + STAT); | |
1089 | TXPRINTK("nicstar%d: Incomplete CS-PDU transmitted.\n", | |
1090 | card->index); | |
1091 | } | |
1092 | ||
1093 | /* Transmit Status Queue 7/8 full */ | |
1094 | if (stat_r & NS_STAT_TSQF) { | |
1095 | writel(NS_STAT_TSQF, card->membase + STAT); | |
1096 | PRINTK("nicstar%d: TSQ full.\n", card->index); | |
1097 | process_tsq(card); | |
1098 | } | |
1099 | ||
1100 | /* Timer overflow */ | |
1101 | if (stat_r & NS_STAT_TMROF) { | |
1102 | writel(NS_STAT_TMROF, card->membase + STAT); | |
1103 | PRINTK("nicstar%d: Timer overflow.\n", card->index); | |
1104 | } | |
1105 | ||
1106 | /* PHY device interrupt signal active */ | |
1107 | if (stat_r & NS_STAT_PHYI) { | |
1108 | writel(NS_STAT_PHYI, card->membase + STAT); | |
1109 | PRINTK("nicstar%d: PHY interrupt.\n", card->index); | |
1110 | if (dev->phy && dev->phy->interrupt) { | |
1111 | dev->phy->interrupt(dev); | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | /* Small Buffer Queue is full */ | |
1116 | if (stat_r & NS_STAT_SFBQF) { | |
1117 | writel(NS_STAT_SFBQF, card->membase + STAT); | |
1118 | printk("nicstar%d: Small free buffer queue is full.\n", | |
1119 | card->index); | |
1120 | } | |
1121 | ||
1122 | /* Large Buffer Queue is full */ | |
1123 | if (stat_r & NS_STAT_LFBQF) { | |
1124 | writel(NS_STAT_LFBQF, card->membase + STAT); | |
1125 | printk("nicstar%d: Large free buffer queue is full.\n", | |
1126 | card->index); | |
1127 | } | |
1128 | ||
1129 | /* Receive Status Queue is full */ | |
1130 | if (stat_r & NS_STAT_RSQF) { | |
1131 | writel(NS_STAT_RSQF, card->membase + STAT); | |
1132 | printk("nicstar%d: RSQ full.\n", card->index); | |
1133 | process_rsq(card); | |
1134 | } | |
1135 | ||
1136 | /* Complete CS-PDU received */ | |
1137 | if (stat_r & NS_STAT_EOPDU) { | |
1138 | RXPRINTK("nicstar%d: End of CS-PDU received.\n", card->index); | |
1139 | process_rsq(card); | |
1140 | writel(NS_STAT_EOPDU, card->membase + STAT); | |
1141 | } | |
1142 | ||
1143 | /* Raw cell received */ | |
1144 | if (stat_r & NS_STAT_RAWCF) { | |
1145 | writel(NS_STAT_RAWCF, card->membase + STAT); | |
1da177e4 | 1146 | #ifndef RCQ_SUPPORT |
098fde11 C |
1147 | printk("nicstar%d: Raw cell received and no support yet...\n", |
1148 | card->index); | |
1da177e4 | 1149 | #endif /* RCQ_SUPPORT */ |
098fde11 C |
1150 | /* NOTE: the following procedure may keep a raw cell pending until the |
1151 | next interrupt. As this preliminary support is only meant to | |
1152 | avoid buffer leakage, this is not an issue. */ | |
1153 | while (readl(card->membase + RAWCT) != card->rawch) { | |
098fde11 | 1154 | |
864a3ff6 | 1155 | if (ns_rcqe_islast(card->rawcell)) { |
098fde11 C |
1156 | struct sk_buff *oldbuf; |
1157 | ||
1158 | oldbuf = card->rcbuf; | |
864a3ff6 C |
1159 | card->rcbuf = idr_find(&card->idr, |
1160 | ns_rcqe_nextbufhandle(card->rawcell)); | |
1161 | card->rawch = NS_PRV_DMA(card->rcbuf); | |
1162 | card->rawcell = (struct ns_rcqe *) | |
1163 | card->rcbuf->data; | |
098fde11 | 1164 | recycle_rx_buf(card, oldbuf); |
864a3ff6 | 1165 | } else { |
098fde11 | 1166 | card->rawch += NS_RCQE_SIZE; |
864a3ff6 C |
1167 | card->rawcell++; |
1168 | } | |
098fde11 C |
1169 | } |
1170 | } | |
1171 | ||
1172 | /* Small buffer queue is empty */ | |
1173 | if (stat_r & NS_STAT_SFBQE) { | |
1174 | int i; | |
1175 | struct sk_buff *sb; | |
1176 | ||
1177 | writel(NS_STAT_SFBQE, card->membase + STAT); | |
1178 | printk("nicstar%d: Small free buffer queue empty.\n", | |
1179 | card->index); | |
1180 | for (i = 0; i < card->sbnr.min; i++) { | |
1181 | sb = dev_alloc_skb(NS_SMSKBSIZE); | |
1182 | if (sb == NULL) { | |
1183 | writel(readl(card->membase + CFG) & | |
1184 | ~NS_CFG_EFBIE, card->membase + CFG); | |
1185 | card->efbie = 0; | |
1186 | break; | |
1187 | } | |
864a3ff6 | 1188 | NS_PRV_BUFTYPE(sb) = BUF_SM; |
098fde11 C |
1189 | skb_queue_tail(&card->sbpool.queue, sb); |
1190 | skb_reserve(sb, NS_AAL0_HEADER); | |
1191 | push_rxbufs(card, sb); | |
1192 | } | |
1193 | card->sbfqc = i; | |
1194 | process_rsq(card); | |
1195 | } | |
1196 | ||
1197 | /* Large buffer queue empty */ | |
1198 | if (stat_r & NS_STAT_LFBQE) { | |
1199 | int i; | |
1200 | struct sk_buff *lb; | |
1201 | ||
1202 | writel(NS_STAT_LFBQE, card->membase + STAT); | |
1203 | printk("nicstar%d: Large free buffer queue empty.\n", | |
1204 | card->index); | |
1205 | for (i = 0; i < card->lbnr.min; i++) { | |
1206 | lb = dev_alloc_skb(NS_LGSKBSIZE); | |
1207 | if (lb == NULL) { | |
1208 | writel(readl(card->membase + CFG) & | |
1209 | ~NS_CFG_EFBIE, card->membase + CFG); | |
1210 | card->efbie = 0; | |
1211 | break; | |
1212 | } | |
864a3ff6 | 1213 | NS_PRV_BUFTYPE(lb) = BUF_LG; |
098fde11 C |
1214 | skb_queue_tail(&card->lbpool.queue, lb); |
1215 | skb_reserve(lb, NS_SMBUFSIZE); | |
1216 | push_rxbufs(card, lb); | |
1217 | } | |
1218 | card->lbfqc = i; | |
1219 | process_rsq(card); | |
1220 | } | |
1221 | ||
1222 | /* Receive Status Queue is 7/8 full */ | |
1223 | if (stat_r & NS_STAT_RSQAF) { | |
1224 | writel(NS_STAT_RSQAF, card->membase + STAT); | |
1225 | RXPRINTK("nicstar%d: RSQ almost full.\n", card->index); | |
1226 | process_rsq(card); | |
1227 | } | |
1228 | ||
1229 | spin_unlock_irqrestore(&card->int_lock, flags); | |
1230 | PRINTK("nicstar%d: end of interrupt service\n", card->index); | |
1231 | return IRQ_HANDLED; | |
1da177e4 LT |
1232 | } |
1233 | ||
1da177e4 LT |
1234 | static int ns_open(struct atm_vcc *vcc) |
1235 | { | |
098fde11 C |
1236 | ns_dev *card; |
1237 | vc_map *vc; | |
1238 | unsigned long tmpl, modl; | |
1239 | int tcr, tcra; /* target cell rate, and absolute value */ | |
1240 | int n = 0; /* Number of entries in the TST. Initialized to remove | |
1241 | the compiler warning. */ | |
1242 | u32 u32d[4]; | |
1243 | int frscdi = 0; /* Index of the SCD. Initialized to remove the compiler | |
1244 | warning. How I wish compilers were clever enough to | |
1245 | tell which variables can truly be used | |
1246 | uninitialized... */ | |
1247 | int inuse; /* tx or rx vc already in use by another vcc */ | |
1248 | short vpi = vcc->vpi; | |
1249 | int vci = vcc->vci; | |
1250 | ||
1251 | card = (ns_dev *) vcc->dev->dev_data; | |
1252 | PRINTK("nicstar%d: opening vpi.vci %d.%d \n", card->index, (int)vpi, | |
1253 | vci); | |
1254 | if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { | |
1255 | PRINTK("nicstar%d: unsupported AAL.\n", card->index); | |
1256 | return -EINVAL; | |
1257 | } | |
1258 | ||
1259 | vc = &(card->vcmap[vpi << card->vcibits | vci]); | |
1260 | vcc->dev_data = vc; | |
1261 | ||
1262 | inuse = 0; | |
1263 | if (vcc->qos.txtp.traffic_class != ATM_NONE && vc->tx) | |
1264 | inuse = 1; | |
1265 | if (vcc->qos.rxtp.traffic_class != ATM_NONE && vc->rx) | |
1266 | inuse += 2; | |
1267 | if (inuse) { | |
1268 | printk("nicstar%d: %s vci already in use.\n", card->index, | |
1269 | inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx"); | |
1270 | return -EINVAL; | |
1271 | } | |
1272 | ||
1273 | set_bit(ATM_VF_ADDR, &vcc->flags); | |
1274 | ||
1275 | /* NOTE: You are not allowed to modify an open connection's QOS. To change | |
1276 | that, remove the ATM_VF_PARTIAL flag checking. There may be other changes | |
1277 | needed to do that. */ | |
1278 | if (!test_bit(ATM_VF_PARTIAL, &vcc->flags)) { | |
1279 | scq_info *scq; | |
1280 | ||
1281 | set_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1282 | if (vcc->qos.txtp.traffic_class == ATM_CBR) { | |
1283 | /* Check requested cell rate and availability of SCD */ | |
1284 | if (vcc->qos.txtp.max_pcr == 0 && vcc->qos.txtp.pcr == 0 | |
1285 | && vcc->qos.txtp.min_pcr == 0) { | |
1286 | PRINTK | |
1287 | ("nicstar%d: trying to open a CBR vc with cell rate = 0 \n", | |
1288 | card->index); | |
1289 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1290 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1291 | return -EINVAL; | |
1292 | } | |
1293 | ||
1294 | tcr = atm_pcr_goal(&(vcc->qos.txtp)); | |
1295 | tcra = tcr >= 0 ? tcr : -tcr; | |
1296 | ||
1297 | PRINTK("nicstar%d: target cell rate = %d.\n", | |
1298 | card->index, vcc->qos.txtp.max_pcr); | |
1299 | ||
1300 | tmpl = | |
1301 | (unsigned long)tcra *(unsigned long) | |
1302 | NS_TST_NUM_ENTRIES; | |
1303 | modl = tmpl % card->max_pcr; | |
1304 | ||
1305 | n = (int)(tmpl / card->max_pcr); | |
1306 | if (tcr > 0) { | |
1307 | if (modl > 0) | |
1308 | n++; | |
1309 | } else if (tcr == 0) { | |
1310 | if ((n = | |
1311 | (card->tst_free_entries - | |
1312 | NS_TST_RESERVED)) <= 0) { | |
1313 | PRINTK | |
1314 | ("nicstar%d: no CBR bandwidth free.\n", | |
1315 | card->index); | |
1316 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1317 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1318 | return -EINVAL; | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | if (n == 0) { | |
1323 | printk | |
1324 | ("nicstar%d: selected bandwidth < granularity.\n", | |
1325 | card->index); | |
1326 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1327 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1328 | return -EINVAL; | |
1329 | } | |
1330 | ||
1331 | if (n > (card->tst_free_entries - NS_TST_RESERVED)) { | |
1332 | PRINTK | |
1333 | ("nicstar%d: not enough free CBR bandwidth.\n", | |
1334 | card->index); | |
1335 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1336 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1337 | return -EINVAL; | |
1338 | } else | |
1339 | card->tst_free_entries -= n; | |
1340 | ||
1341 | XPRINTK("nicstar%d: writing %d tst entries.\n", | |
1342 | card->index, n); | |
1343 | for (frscdi = 0; frscdi < NS_FRSCD_NUM; frscdi++) { | |
1344 | if (card->scd2vc[frscdi] == NULL) { | |
1345 | card->scd2vc[frscdi] = vc; | |
1346 | break; | |
1347 | } | |
1348 | } | |
1349 | if (frscdi == NS_FRSCD_NUM) { | |
1350 | PRINTK | |
1351 | ("nicstar%d: no SCD available for CBR channel.\n", | |
1352 | card->index); | |
1353 | card->tst_free_entries += n; | |
1354 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1355 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1356 | return -EBUSY; | |
1357 | } | |
1358 | ||
1359 | vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE; | |
1360 | ||
864a3ff6 | 1361 | scq = get_scq(card, CBR_SCQSIZE, vc->cbr_scd); |
098fde11 C |
1362 | if (scq == NULL) { |
1363 | PRINTK("nicstar%d: can't get fixed rate SCQ.\n", | |
1364 | card->index); | |
1365 | card->scd2vc[frscdi] = NULL; | |
1366 | card->tst_free_entries += n; | |
1367 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1368 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1369 | return -ENOMEM; | |
1370 | } | |
1371 | vc->scq = scq; | |
864a3ff6 | 1372 | u32d[0] = scq_virt_to_bus(scq, scq->base); |
098fde11 C |
1373 | u32d[1] = (u32) 0x00000000; |
1374 | u32d[2] = (u32) 0xffffffff; | |
1375 | u32d[3] = (u32) 0x00000000; | |
1376 | ns_write_sram(card, vc->cbr_scd, u32d, 4); | |
1377 | ||
1378 | fill_tst(card, n, vc); | |
1379 | } else if (vcc->qos.txtp.traffic_class == ATM_UBR) { | |
1380 | vc->cbr_scd = 0x00000000; | |
1381 | vc->scq = card->scq0; | |
1382 | } | |
1383 | ||
1384 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
1385 | vc->tx = 1; | |
1386 | vc->tx_vcc = vcc; | |
1387 | vc->tbd_count = 0; | |
1388 | } | |
1389 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) { | |
1390 | u32 status; | |
1391 | ||
1392 | vc->rx = 1; | |
1393 | vc->rx_vcc = vcc; | |
1394 | vc->rx_iov = NULL; | |
1395 | ||
1396 | /* Open the connection in hardware */ | |
1397 | if (vcc->qos.aal == ATM_AAL5) | |
1398 | status = NS_RCTE_AAL5 | NS_RCTE_CONNECTOPEN; | |
1399 | else /* vcc->qos.aal == ATM_AAL0 */ | |
1400 | status = NS_RCTE_AAL0 | NS_RCTE_CONNECTOPEN; | |
1da177e4 | 1401 | #ifdef RCQ_SUPPORT |
098fde11 | 1402 | status |= NS_RCTE_RAWCELLINTEN; |
1da177e4 | 1403 | #endif /* RCQ_SUPPORT */ |
098fde11 C |
1404 | ns_write_sram(card, |
1405 | NS_RCT + | |
1406 | (vpi << card->vcibits | vci) * | |
1407 | NS_RCT_ENTRY_SIZE, &status, 1); | |
1408 | } | |
1da177e4 | 1409 | |
098fde11 | 1410 | } |
1da177e4 | 1411 | |
098fde11 C |
1412 | set_bit(ATM_VF_READY, &vcc->flags); |
1413 | return 0; | |
1414 | } | |
1da177e4 LT |
1415 | |
1416 | static void ns_close(struct atm_vcc *vcc) | |
1417 | { | |
098fde11 C |
1418 | vc_map *vc; |
1419 | ns_dev *card; | |
1420 | u32 data; | |
1421 | int i; | |
1422 | ||
1423 | vc = vcc->dev_data; | |
1424 | card = vcc->dev->dev_data; | |
1425 | PRINTK("nicstar%d: closing vpi.vci %d.%d \n", card->index, | |
1426 | (int)vcc->vpi, vcc->vci); | |
1427 | ||
1428 | clear_bit(ATM_VF_READY, &vcc->flags); | |
1429 | ||
1430 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) { | |
1431 | u32 addr; | |
1432 | unsigned long flags; | |
1433 | ||
1434 | addr = | |
1435 | NS_RCT + | |
1436 | (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE; | |
1437 | spin_lock_irqsave(&card->res_lock, flags); | |
1438 | while (CMD_BUSY(card)) ; | |
1439 | writel(NS_CMD_CLOSE_CONNECTION | addr << 2, | |
1440 | card->membase + CMD); | |
1441 | spin_unlock_irqrestore(&card->res_lock, flags); | |
1442 | ||
1443 | vc->rx = 0; | |
1444 | if (vc->rx_iov != NULL) { | |
1445 | struct sk_buff *iovb; | |
1446 | u32 stat; | |
1447 | ||
1448 | stat = readl(card->membase + STAT); | |
1449 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
1450 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
1451 | ||
1452 | PRINTK | |
1453 | ("nicstar%d: closing a VC with pending rx buffers.\n", | |
1454 | card->index); | |
1455 | iovb = vc->rx_iov; | |
1456 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
864a3ff6 C |
1457 | NS_PRV_IOVCNT(iovb)); |
1458 | NS_PRV_IOVCNT(iovb) = 0; | |
098fde11 C |
1459 | spin_lock_irqsave(&card->int_lock, flags); |
1460 | recycle_iov_buf(card, iovb); | |
1461 | spin_unlock_irqrestore(&card->int_lock, flags); | |
1462 | vc->rx_iov = NULL; | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
1467 | vc->tx = 0; | |
1468 | } | |
1469 | ||
1470 | if (vcc->qos.txtp.traffic_class == ATM_CBR) { | |
1471 | unsigned long flags; | |
1472 | ns_scqe *scqep; | |
1473 | scq_info *scq; | |
1474 | ||
1475 | scq = vc->scq; | |
1476 | ||
1477 | for (;;) { | |
1478 | spin_lock_irqsave(&scq->lock, flags); | |
1479 | scqep = scq->next; | |
1480 | if (scqep == scq->base) | |
1481 | scqep = scq->last; | |
1482 | else | |
1483 | scqep--; | |
1484 | if (scqep == scq->tail) { | |
1485 | spin_unlock_irqrestore(&scq->lock, flags); | |
1486 | break; | |
1487 | } | |
1488 | /* If the last entry is not a TSR, place one in the SCQ in order to | |
1489 | be able to completely drain it and then close. */ | |
1490 | if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next) { | |
1491 | ns_scqe tsr; | |
1492 | u32 scdi, scqi; | |
1493 | u32 data; | |
1494 | int index; | |
1495 | ||
1496 | tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); | |
1497 | scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; | |
1498 | scqi = scq->next - scq->base; | |
1499 | tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); | |
1500 | tsr.word_3 = 0x00000000; | |
1501 | tsr.word_4 = 0x00000000; | |
1502 | *scq->next = tsr; | |
1503 | index = (int)scqi; | |
1504 | scq->skb[index] = NULL; | |
1505 | if (scq->next == scq->last) | |
1506 | scq->next = scq->base; | |
1507 | else | |
1508 | scq->next++; | |
864a3ff6 | 1509 | data = scq_virt_to_bus(scq, scq->next); |
098fde11 C |
1510 | ns_write_sram(card, scq->scd, &data, 1); |
1511 | } | |
1512 | spin_unlock_irqrestore(&scq->lock, flags); | |
1513 | schedule(); | |
1514 | } | |
1515 | ||
1516 | /* Free all TST entries */ | |
1517 | data = NS_TST_OPCODE_VARIABLE; | |
1518 | for (i = 0; i < NS_TST_NUM_ENTRIES; i++) { | |
1519 | if (card->tste2vc[i] == vc) { | |
1520 | ns_write_sram(card, card->tst_addr + i, &data, | |
1521 | 1); | |
1522 | card->tste2vc[i] = NULL; | |
1523 | card->tst_free_entries++; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | card->scd2vc[(vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE] = NULL; | |
864a3ff6 | 1528 | free_scq(card, vc->scq, vcc); |
098fde11 C |
1529 | } |
1530 | ||
1531 | /* remove all references to vcc before deleting it */ | |
1532 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
1533 | unsigned long flags; | |
1534 | scq_info *scq = card->scq0; | |
1535 | ||
1536 | spin_lock_irqsave(&scq->lock, flags); | |
1537 | ||
1538 | for (i = 0; i < scq->num_entries; i++) { | |
1539 | if (scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) { | |
1540 | ATM_SKB(scq->skb[i])->vcc = NULL; | |
1541 | atm_return(vcc, scq->skb[i]->truesize); | |
1542 | PRINTK | |
1543 | ("nicstar: deleted pending vcc mapping\n"); | |
1544 | } | |
1545 | } | |
1546 | ||
1547 | spin_unlock_irqrestore(&scq->lock, flags); | |
1548 | } | |
1549 | ||
1550 | vcc->dev_data = NULL; | |
1551 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1552 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1da177e4 LT |
1553 | |
1554 | #ifdef RX_DEBUG | |
098fde11 C |
1555 | { |
1556 | u32 stat, cfg; | |
1557 | stat = readl(card->membase + STAT); | |
1558 | cfg = readl(card->membase + CFG); | |
1559 | printk("STAT = 0x%08X CFG = 0x%08X \n", stat, cfg); | |
1560 | printk | |
864a3ff6 C |
1561 | ("TSQ: base = 0x%p next = 0x%p last = 0x%p TSQT = 0x%08X \n", |
1562 | card->tsq.base, card->tsq.next, | |
1563 | card->tsq.last, readl(card->membase + TSQT)); | |
098fde11 | 1564 | printk |
864a3ff6 C |
1565 | ("RSQ: base = 0x%p next = 0x%p last = 0x%p RSQT = 0x%08X \n", |
1566 | card->rsq.base, card->rsq.next, | |
1567 | card->rsq.last, readl(card->membase + RSQT)); | |
098fde11 C |
1568 | printk("Empty free buffer queue interrupt %s \n", |
1569 | card->efbie ? "enabled" : "disabled"); | |
1570 | printk("SBCNT = %d count = %d LBCNT = %d count = %d \n", | |
1571 | ns_stat_sfbqc_get(stat), card->sbpool.count, | |
1572 | ns_stat_lfbqc_get(stat), card->lbpool.count); | |
1573 | printk("hbpool.count = %d iovpool.count = %d \n", | |
1574 | card->hbpool.count, card->iovpool.count); | |
1575 | } | |
1da177e4 LT |
1576 | #endif /* RX_DEBUG */ |
1577 | } | |
1578 | ||
098fde11 | 1579 | static void fill_tst(ns_dev * card, int n, vc_map * vc) |
1da177e4 | 1580 | { |
098fde11 C |
1581 | u32 new_tst; |
1582 | unsigned long cl; | |
1583 | int e, r; | |
1584 | u32 data; | |
1585 | ||
1586 | /* It would be very complicated to keep the two TSTs synchronized while | |
1587 | assuring that writes are only made to the inactive TST. So, for now I | |
1588 | will use only one TST. If problems occur, I will change this again */ | |
1589 | ||
1590 | new_tst = card->tst_addr; | |
1591 | ||
1592 | /* Fill procedure */ | |
1593 | ||
1594 | for (e = 0; e < NS_TST_NUM_ENTRIES; e++) { | |
1595 | if (card->tste2vc[e] == NULL) | |
1596 | break; | |
1597 | } | |
1598 | if (e == NS_TST_NUM_ENTRIES) { | |
1599 | printk("nicstar%d: No free TST entries found. \n", card->index); | |
1600 | return; | |
1601 | } | |
1602 | ||
1603 | r = n; | |
1604 | cl = NS_TST_NUM_ENTRIES; | |
1605 | data = ns_tste_make(NS_TST_OPCODE_FIXED, vc->cbr_scd); | |
1606 | ||
1607 | while (r > 0) { | |
1608 | if (cl >= NS_TST_NUM_ENTRIES && card->tste2vc[e] == NULL) { | |
1609 | card->tste2vc[e] = vc; | |
1610 | ns_write_sram(card, new_tst + e, &data, 1); | |
1611 | cl -= NS_TST_NUM_ENTRIES; | |
1612 | r--; | |
1613 | } | |
1614 | ||
1615 | if (++e == NS_TST_NUM_ENTRIES) { | |
1616 | e = 0; | |
1617 | } | |
1618 | cl += n; | |
1619 | } | |
1620 | ||
1621 | /* End of fill procedure */ | |
1622 | ||
1623 | data = ns_tste_make(NS_TST_OPCODE_END, new_tst); | |
1624 | ns_write_sram(card, new_tst + NS_TST_NUM_ENTRIES, &data, 1); | |
1625 | ns_write_sram(card, card->tst_addr + NS_TST_NUM_ENTRIES, &data, 1); | |
1626 | card->tst_addr = new_tst; | |
1da177e4 LT |
1627 | } |
1628 | ||
1da177e4 LT |
1629 | static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) |
1630 | { | |
098fde11 C |
1631 | ns_dev *card; |
1632 | vc_map *vc; | |
1633 | scq_info *scq; | |
1634 | unsigned long buflen; | |
1635 | ns_scqe scqe; | |
1636 | u32 flags; /* TBD flags, not CPU flags */ | |
1637 | ||
1638 | card = vcc->dev->dev_data; | |
1639 | TXPRINTK("nicstar%d: ns_send() called.\n", card->index); | |
1640 | if ((vc = (vc_map *) vcc->dev_data) == NULL) { | |
1641 | printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", | |
1642 | card->index); | |
1643 | atomic_inc(&vcc->stats->tx_err); | |
1644 | dev_kfree_skb_any(skb); | |
1645 | return -EINVAL; | |
1646 | } | |
1da177e4 | 1647 | |
098fde11 C |
1648 | if (!vc->tx) { |
1649 | printk("nicstar%d: Trying to transmit on a non-tx VC.\n", | |
1650 | card->index); | |
1651 | atomic_inc(&vcc->stats->tx_err); | |
1652 | dev_kfree_skb_any(skb); | |
1653 | return -EINVAL; | |
1654 | } | |
1da177e4 | 1655 | |
098fde11 C |
1656 | if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { |
1657 | printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", | |
1658 | card->index); | |
1659 | atomic_inc(&vcc->stats->tx_err); | |
1660 | dev_kfree_skb_any(skb); | |
1661 | return -EINVAL; | |
1662 | } | |
1da177e4 | 1663 | |
098fde11 C |
1664 | if (skb_shinfo(skb)->nr_frags != 0) { |
1665 | printk("nicstar%d: No scatter-gather yet.\n", card->index); | |
1666 | atomic_inc(&vcc->stats->tx_err); | |
1667 | dev_kfree_skb_any(skb); | |
1668 | return -EINVAL; | |
1669 | } | |
1670 | ||
1671 | ATM_SKB(skb)->vcc = vcc; | |
1672 | ||
864a3ff6 C |
1673 | NS_PRV_DMA(skb) = pci_map_single(card->pcidev, skb->data, |
1674 | skb->len, PCI_DMA_TODEVICE); | |
1675 | ||
098fde11 C |
1676 | if (vcc->qos.aal == ATM_AAL5) { |
1677 | buflen = (skb->len + 47 + 8) / 48 * 48; /* Multiple of 48 */ | |
1678 | flags = NS_TBD_AAL5; | |
864a3ff6 C |
1679 | scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb)); |
1680 | scqe.word_3 = cpu_to_le32(skb->len); | |
098fde11 C |
1681 | scqe.word_4 = |
1682 | ns_tbd_mkword_4(0, (u32) vcc->vpi, (u32) vcc->vci, 0, | |
1683 | ATM_SKB(skb)-> | |
1684 | atm_options & ATM_ATMOPT_CLP ? 1 : 0); | |
1685 | flags |= NS_TBD_EOPDU; | |
1686 | } else { /* (vcc->qos.aal == ATM_AAL0) */ | |
1687 | ||
1688 | buflen = ATM_CELL_PAYLOAD; /* i.e., 48 bytes */ | |
1689 | flags = NS_TBD_AAL0; | |
864a3ff6 | 1690 | scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb) + NS_AAL0_HEADER); |
098fde11 C |
1691 | scqe.word_3 = cpu_to_le32(0x00000000); |
1692 | if (*skb->data & 0x02) /* Payload type 1 - end of pdu */ | |
1693 | flags |= NS_TBD_EOPDU; | |
1694 | scqe.word_4 = | |
1695 | cpu_to_le32(*((u32 *) skb->data) & ~NS_TBD_VC_MASK); | |
1696 | /* Force the VPI/VCI to be the same as in VCC struct */ | |
1697 | scqe.word_4 |= | |
1698 | cpu_to_le32((((u32) vcc-> | |
1699 | vpi) << NS_TBD_VPI_SHIFT | ((u32) vcc-> | |
1700 | vci) << | |
1701 | NS_TBD_VCI_SHIFT) & NS_TBD_VC_MASK); | |
1702 | } | |
1703 | ||
1704 | if (vcc->qos.txtp.traffic_class == ATM_CBR) { | |
1705 | scqe.word_1 = ns_tbd_mkword_1_novbr(flags, (u32) buflen); | |
1706 | scq = ((vc_map *) vcc->dev_data)->scq; | |
1707 | } else { | |
1708 | scqe.word_1 = | |
1709 | ns_tbd_mkword_1(flags, (u32) 1, (u32) 1, (u32) buflen); | |
1710 | scq = card->scq0; | |
1711 | } | |
1712 | ||
1713 | if (push_scqe(card, vc, scq, &scqe, skb) != 0) { | |
1714 | atomic_inc(&vcc->stats->tx_err); | |
1715 | dev_kfree_skb_any(skb); | |
1716 | return -EIO; | |
1717 | } | |
1718 | atomic_inc(&vcc->stats->tx); | |
1da177e4 | 1719 | |
098fde11 C |
1720 | return 0; |
1721 | } | |
1da177e4 | 1722 | |
098fde11 C |
1723 | static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, |
1724 | struct sk_buff *skb) | |
1da177e4 | 1725 | { |
098fde11 C |
1726 | unsigned long flags; |
1727 | ns_scqe tsr; | |
1728 | u32 scdi, scqi; | |
1729 | int scq_is_vbr; | |
1730 | u32 data; | |
1731 | int index; | |
1732 | ||
1733 | spin_lock_irqsave(&scq->lock, flags); | |
1734 | while (scq->tail == scq->next) { | |
1735 | if (in_interrupt()) { | |
1736 | spin_unlock_irqrestore(&scq->lock, flags); | |
1737 | printk("nicstar%d: Error pushing TBD.\n", card->index); | |
1738 | return 1; | |
1739 | } | |
1740 | ||
1741 | scq->full = 1; | |
1742 | spin_unlock_irqrestore(&scq->lock, flags); | |
1743 | interruptible_sleep_on_timeout(&scq->scqfull_waitq, | |
1744 | SCQFULL_TIMEOUT); | |
1745 | spin_lock_irqsave(&scq->lock, flags); | |
1746 | ||
1747 | if (scq->full) { | |
1748 | spin_unlock_irqrestore(&scq->lock, flags); | |
1749 | printk("nicstar%d: Timeout pushing TBD.\n", | |
1750 | card->index); | |
1751 | return 1; | |
1752 | } | |
1753 | } | |
1754 | *scq->next = *tbd; | |
1755 | index = (int)(scq->next - scq->base); | |
1756 | scq->skb[index] = skb; | |
864a3ff6 C |
1757 | XPRINTK("nicstar%d: sending skb at 0x%p (pos %d).\n", |
1758 | card->index, skb, index); | |
1759 | XPRINTK("nicstar%d: TBD written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", | |
098fde11 C |
1760 | card->index, le32_to_cpu(tbd->word_1), le32_to_cpu(tbd->word_2), |
1761 | le32_to_cpu(tbd->word_3), le32_to_cpu(tbd->word_4), | |
864a3ff6 | 1762 | scq->next); |
098fde11 C |
1763 | if (scq->next == scq->last) |
1764 | scq->next = scq->base; | |
1765 | else | |
1766 | scq->next++; | |
1767 | ||
1768 | vc->tbd_count++; | |
1769 | if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) { | |
1770 | scq->tbd_count++; | |
1771 | scq_is_vbr = 1; | |
1772 | } else | |
1773 | scq_is_vbr = 0; | |
1774 | ||
1775 | if (vc->tbd_count >= MAX_TBD_PER_VC | |
1776 | || scq->tbd_count >= MAX_TBD_PER_SCQ) { | |
1777 | int has_run = 0; | |
1778 | ||
1779 | while (scq->tail == scq->next) { | |
1780 | if (in_interrupt()) { | |
864a3ff6 | 1781 | data = scq_virt_to_bus(scq, scq->next); |
098fde11 C |
1782 | ns_write_sram(card, scq->scd, &data, 1); |
1783 | spin_unlock_irqrestore(&scq->lock, flags); | |
1784 | printk("nicstar%d: Error pushing TSR.\n", | |
1785 | card->index); | |
1786 | return 0; | |
1787 | } | |
1788 | ||
1789 | scq->full = 1; | |
1790 | if (has_run++) | |
1791 | break; | |
1792 | spin_unlock_irqrestore(&scq->lock, flags); | |
1793 | interruptible_sleep_on_timeout(&scq->scqfull_waitq, | |
1794 | SCQFULL_TIMEOUT); | |
1795 | spin_lock_irqsave(&scq->lock, flags); | |
1796 | } | |
1797 | ||
1798 | if (!scq->full) { | |
1799 | tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); | |
1800 | if (scq_is_vbr) | |
1801 | scdi = NS_TSR_SCDISVBR; | |
1802 | else | |
1803 | scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; | |
1804 | scqi = scq->next - scq->base; | |
1805 | tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); | |
1806 | tsr.word_3 = 0x00000000; | |
1807 | tsr.word_4 = 0x00000000; | |
1808 | ||
1809 | *scq->next = tsr; | |
1810 | index = (int)scqi; | |
1811 | scq->skb[index] = NULL; | |
1812 | XPRINTK | |
864a3ff6 | 1813 | ("nicstar%d: TSR written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", |
098fde11 C |
1814 | card->index, le32_to_cpu(tsr.word_1), |
1815 | le32_to_cpu(tsr.word_2), le32_to_cpu(tsr.word_3), | |
864a3ff6 | 1816 | le32_to_cpu(tsr.word_4), scq->next); |
098fde11 C |
1817 | if (scq->next == scq->last) |
1818 | scq->next = scq->base; | |
1819 | else | |
1820 | scq->next++; | |
1821 | vc->tbd_count = 0; | |
1822 | scq->tbd_count = 0; | |
1823 | } else | |
1824 | PRINTK("nicstar%d: Timeout pushing TSR.\n", | |
1825 | card->index); | |
1826 | } | |
864a3ff6 | 1827 | data = scq_virt_to_bus(scq, scq->next); |
098fde11 C |
1828 | ns_write_sram(card, scq->scd, &data, 1); |
1829 | ||
1830 | spin_unlock_irqrestore(&scq->lock, flags); | |
1831 | ||
1832 | return 0; | |
1da177e4 LT |
1833 | } |
1834 | ||
098fde11 | 1835 | static void process_tsq(ns_dev * card) |
1da177e4 | 1836 | { |
098fde11 C |
1837 | u32 scdi; |
1838 | scq_info *scq; | |
1839 | ns_tsi *previous = NULL, *one_ahead, *two_ahead; | |
1840 | int serviced_entries; /* flag indicating at least on entry was serviced */ | |
1841 | ||
1842 | serviced_entries = 0; | |
1843 | ||
1844 | if (card->tsq.next == card->tsq.last) | |
1845 | one_ahead = card->tsq.base; | |
1846 | else | |
1847 | one_ahead = card->tsq.next + 1; | |
1848 | ||
1849 | if (one_ahead == card->tsq.last) | |
1850 | two_ahead = card->tsq.base; | |
1851 | else | |
1852 | two_ahead = one_ahead + 1; | |
1853 | ||
1854 | while (!ns_tsi_isempty(card->tsq.next) || !ns_tsi_isempty(one_ahead) || | |
1855 | !ns_tsi_isempty(two_ahead)) | |
1856 | /* At most two empty, as stated in the 77201 errata */ | |
1857 | { | |
1858 | serviced_entries = 1; | |
1859 | ||
1860 | /* Skip the one or two possible empty entries */ | |
1861 | while (ns_tsi_isempty(card->tsq.next)) { | |
1862 | if (card->tsq.next == card->tsq.last) | |
1863 | card->tsq.next = card->tsq.base; | |
1864 | else | |
1865 | card->tsq.next++; | |
1866 | } | |
1867 | ||
1868 | if (!ns_tsi_tmrof(card->tsq.next)) { | |
1869 | scdi = ns_tsi_getscdindex(card->tsq.next); | |
1870 | if (scdi == NS_TSI_SCDISVBR) | |
1871 | scq = card->scq0; | |
1872 | else { | |
1873 | if (card->scd2vc[scdi] == NULL) { | |
1874 | printk | |
1875 | ("nicstar%d: could not find VC from SCD index.\n", | |
1876 | card->index); | |
1877 | ns_tsi_init(card->tsq.next); | |
1878 | return; | |
1879 | } | |
1880 | scq = card->scd2vc[scdi]->scq; | |
1881 | } | |
1882 | drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next)); | |
1883 | scq->full = 0; | |
1884 | wake_up_interruptible(&(scq->scqfull_waitq)); | |
1885 | } | |
1886 | ||
1887 | ns_tsi_init(card->tsq.next); | |
1888 | previous = card->tsq.next; | |
1889 | if (card->tsq.next == card->tsq.last) | |
1890 | card->tsq.next = card->tsq.base; | |
1891 | else | |
1892 | card->tsq.next++; | |
1893 | ||
1894 | if (card->tsq.next == card->tsq.last) | |
1895 | one_ahead = card->tsq.base; | |
1896 | else | |
1897 | one_ahead = card->tsq.next + 1; | |
1898 | ||
1899 | if (one_ahead == card->tsq.last) | |
1900 | two_ahead = card->tsq.base; | |
1901 | else | |
1902 | two_ahead = one_ahead + 1; | |
1903 | } | |
1904 | ||
864a3ff6 C |
1905 | if (serviced_entries) |
1906 | writel(PTR_DIFF(previous, card->tsq.base), | |
098fde11 | 1907 | card->membase + TSQH); |
1da177e4 LT |
1908 | } |
1909 | ||
098fde11 | 1910 | static void drain_scq(ns_dev * card, scq_info * scq, int pos) |
1da177e4 | 1911 | { |
098fde11 C |
1912 | struct atm_vcc *vcc; |
1913 | struct sk_buff *skb; | |
1914 | int i; | |
1915 | unsigned long flags; | |
1916 | ||
864a3ff6 C |
1917 | XPRINTK("nicstar%d: drain_scq() called, scq at 0x%p, pos %d.\n", |
1918 | card->index, scq, pos); | |
098fde11 C |
1919 | if (pos >= scq->num_entries) { |
1920 | printk("nicstar%d: Bad index on drain_scq().\n", card->index); | |
1921 | return; | |
1922 | } | |
1923 | ||
1924 | spin_lock_irqsave(&scq->lock, flags); | |
1925 | i = (int)(scq->tail - scq->base); | |
1926 | if (++i == scq->num_entries) | |
1927 | i = 0; | |
1928 | while (i != pos) { | |
1929 | skb = scq->skb[i]; | |
864a3ff6 C |
1930 | XPRINTK("nicstar%d: freeing skb at 0x%p (index %d).\n", |
1931 | card->index, skb, i); | |
098fde11 | 1932 | if (skb != NULL) { |
864a3ff6 C |
1933 | pci_unmap_single(card->pcidev, |
1934 | NS_PRV_DMA(skb), | |
1935 | skb->len, | |
1936 | PCI_DMA_TODEVICE); | |
098fde11 C |
1937 | vcc = ATM_SKB(skb)->vcc; |
1938 | if (vcc && vcc->pop != NULL) { | |
1939 | vcc->pop(vcc, skb); | |
1940 | } else { | |
1941 | dev_kfree_skb_irq(skb); | |
1942 | } | |
1943 | scq->skb[i] = NULL; | |
1944 | } | |
1945 | if (++i == scq->num_entries) | |
1946 | i = 0; | |
1947 | } | |
1948 | scq->tail = scq->base + pos; | |
1949 | spin_unlock_irqrestore(&scq->lock, flags); | |
1da177e4 LT |
1950 | } |
1951 | ||
098fde11 C |
1952 | static void process_rsq(ns_dev * card) |
1953 | { | |
1954 | ns_rsqe *previous; | |
1955 | ||
1956 | if (!ns_rsqe_valid(card->rsq.next)) | |
1957 | return; | |
1958 | do { | |
1959 | dequeue_rx(card, card->rsq.next); | |
1960 | ns_rsqe_init(card->rsq.next); | |
1961 | previous = card->rsq.next; | |
1962 | if (card->rsq.next == card->rsq.last) | |
1963 | card->rsq.next = card->rsq.base; | |
1964 | else | |
1965 | card->rsq.next++; | |
1966 | } while (ns_rsqe_valid(card->rsq.next)); | |
864a3ff6 | 1967 | writel(PTR_DIFF(previous, card->rsq.base), card->membase + RSQH); |
098fde11 | 1968 | } |
1da177e4 | 1969 | |
098fde11 | 1970 | static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) |
1da177e4 | 1971 | { |
098fde11 C |
1972 | u32 vpi, vci; |
1973 | vc_map *vc; | |
1974 | struct sk_buff *iovb; | |
1975 | struct iovec *iov; | |
1976 | struct atm_vcc *vcc; | |
1977 | struct sk_buff *skb; | |
1978 | unsigned short aal5_len; | |
1979 | int len; | |
1980 | u32 stat; | |
864a3ff6 | 1981 | u32 id; |
098fde11 C |
1982 | |
1983 | stat = readl(card->membase + STAT); | |
1984 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
1985 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
1986 | ||
864a3ff6 C |
1987 | id = le32_to_cpu(rsqe->buffer_handle); |
1988 | skb = idr_find(&card->idr, id); | |
1989 | if (!skb) { | |
1990 | RXPRINTK(KERN_ERR | |
1991 | "nicstar%d: idr_find() failed!\n", card->index); | |
1992 | return; | |
1993 | } | |
1994 | idr_remove(&card->idr, id); | |
1995 | pci_dma_sync_single_for_cpu(card->pcidev, | |
1996 | NS_PRV_DMA(skb), | |
1997 | (NS_PRV_BUFTYPE(skb) == BUF_SM | |
1998 | ? NS_SMSKBSIZE : NS_LGSKBSIZE), | |
1999 | PCI_DMA_FROMDEVICE); | |
2000 | pci_unmap_single(card->pcidev, | |
2001 | NS_PRV_DMA(skb), | |
2002 | (NS_PRV_BUFTYPE(skb) == BUF_SM | |
2003 | ? NS_SMSKBSIZE : NS_LGSKBSIZE), | |
2004 | PCI_DMA_FROMDEVICE); | |
098fde11 C |
2005 | vpi = ns_rsqe_vpi(rsqe); |
2006 | vci = ns_rsqe_vci(rsqe); | |
2007 | if (vpi >= 1UL << card->vpibits || vci >= 1UL << card->vcibits) { | |
2008 | printk("nicstar%d: SDU received for out-of-range vc %d.%d.\n", | |
2009 | card->index, vpi, vci); | |
2010 | recycle_rx_buf(card, skb); | |
2011 | return; | |
2012 | } | |
2013 | ||
2014 | vc = &(card->vcmap[vpi << card->vcibits | vci]); | |
2015 | if (!vc->rx) { | |
2016 | RXPRINTK("nicstar%d: SDU received on non-rx vc %d.%d.\n", | |
2017 | card->index, vpi, vci); | |
2018 | recycle_rx_buf(card, skb); | |
2019 | return; | |
2020 | } | |
2021 | ||
2022 | vcc = vc->rx_vcc; | |
2023 | ||
2024 | if (vcc->qos.aal == ATM_AAL0) { | |
2025 | struct sk_buff *sb; | |
2026 | unsigned char *cell; | |
2027 | int i; | |
2028 | ||
2029 | cell = skb->data; | |
2030 | for (i = ns_rsqe_cellcount(rsqe); i; i--) { | |
2031 | if ((sb = dev_alloc_skb(NS_SMSKBSIZE)) == NULL) { | |
2032 | printk | |
2033 | ("nicstar%d: Can't allocate buffers for aal0.\n", | |
2034 | card->index); | |
2035 | atomic_add(i, &vcc->stats->rx_drop); | |
2036 | break; | |
2037 | } | |
2038 | if (!atm_charge(vcc, sb->truesize)) { | |
2039 | RXPRINTK | |
2040 | ("nicstar%d: atm_charge() dropped aal0 packets.\n", | |
2041 | card->index); | |
2042 | atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ | |
2043 | dev_kfree_skb_any(sb); | |
2044 | break; | |
2045 | } | |
2046 | /* Rebuild the header */ | |
2047 | *((u32 *) sb->data) = le32_to_cpu(rsqe->word_1) << 4 | | |
2048 | (ns_rsqe_clp(rsqe) ? 0x00000001 : 0x00000000); | |
2049 | if (i == 1 && ns_rsqe_eopdu(rsqe)) | |
2050 | *((u32 *) sb->data) |= 0x00000002; | |
2051 | skb_put(sb, NS_AAL0_HEADER); | |
2052 | memcpy(skb_tail_pointer(sb), cell, ATM_CELL_PAYLOAD); | |
2053 | skb_put(sb, ATM_CELL_PAYLOAD); | |
2054 | ATM_SKB(sb)->vcc = vcc; | |
2055 | __net_timestamp(sb); | |
2056 | vcc->push(vcc, sb); | |
2057 | atomic_inc(&vcc->stats->rx); | |
2058 | cell += ATM_CELL_PAYLOAD; | |
2059 | } | |
2060 | ||
2061 | recycle_rx_buf(card, skb); | |
2062 | return; | |
2063 | } | |
2064 | ||
2065 | /* To reach this point, the AAL layer can only be AAL5 */ | |
2066 | ||
2067 | if ((iovb = vc->rx_iov) == NULL) { | |
2068 | iovb = skb_dequeue(&(card->iovpool.queue)); | |
2069 | if (iovb == NULL) { /* No buffers in the queue */ | |
2070 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC); | |
2071 | if (iovb == NULL) { | |
2072 | printk("nicstar%d: Out of iovec buffers.\n", | |
2073 | card->index); | |
2074 | atomic_inc(&vcc->stats->rx_drop); | |
2075 | recycle_rx_buf(card, skb); | |
2076 | return; | |
2077 | } | |
864a3ff6 | 2078 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
2079 | } else if (--card->iovpool.count < card->iovnr.min) { |
2080 | struct sk_buff *new_iovb; | |
2081 | if ((new_iovb = | |
2082 | alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL) { | |
864a3ff6 | 2083 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
2084 | skb_queue_tail(&card->iovpool.queue, new_iovb); |
2085 | card->iovpool.count++; | |
2086 | } | |
2087 | } | |
2088 | vc->rx_iov = iovb; | |
864a3ff6 | 2089 | NS_PRV_IOVCNT(iovb) = 0; |
098fde11 C |
2090 | iovb->len = 0; |
2091 | iovb->data = iovb->head; | |
2092 | skb_reset_tail_pointer(iovb); | |
098fde11 C |
2093 | /* IMPORTANT: a pointer to the sk_buff containing the small or large |
2094 | buffer is stored as iovec base, NOT a pointer to the | |
2095 | small or large buffer itself. */ | |
864a3ff6 | 2096 | } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) { |
098fde11 C |
2097 | printk("nicstar%d: received too big AAL5 SDU.\n", card->index); |
2098 | atomic_inc(&vcc->stats->rx_err); | |
2099 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
2100 | NS_MAX_IOVECS); | |
864a3ff6 | 2101 | NS_PRV_IOVCNT(iovb) = 0; |
098fde11 C |
2102 | iovb->len = 0; |
2103 | iovb->data = iovb->head; | |
2104 | skb_reset_tail_pointer(iovb); | |
098fde11 | 2105 | } |
864a3ff6 | 2106 | iov = &((struct iovec *)iovb->data)[NS_PRV_IOVCNT(iovb)++]; |
098fde11 C |
2107 | iov->iov_base = (void *)skb; |
2108 | iov->iov_len = ns_rsqe_cellcount(rsqe) * 48; | |
2109 | iovb->len += iov->iov_len; | |
2110 | ||
864a3ff6 C |
2111 | #ifdef EXTRA_DEBUG |
2112 | if (NS_PRV_IOVCNT(iovb) == 1) { | |
2113 | if (NS_PRV_BUFTYPE(skb) != BUF_SM) { | |
098fde11 C |
2114 | printk |
2115 | ("nicstar%d: Expected a small buffer, and this is not one.\n", | |
2116 | card->index); | |
2117 | which_list(card, skb); | |
2118 | atomic_inc(&vcc->stats->rx_err); | |
2119 | recycle_rx_buf(card, skb); | |
2120 | vc->rx_iov = NULL; | |
2121 | recycle_iov_buf(card, iovb); | |
2122 | return; | |
2123 | } | |
864a3ff6 | 2124 | } else { /* NS_PRV_IOVCNT(iovb) >= 2 */ |
098fde11 | 2125 | |
864a3ff6 | 2126 | if (NS_PRV_BUFTYPE(skb) != BUF_LG) { |
098fde11 C |
2127 | printk |
2128 | ("nicstar%d: Expected a large buffer, and this is not one.\n", | |
2129 | card->index); | |
2130 | which_list(card, skb); | |
2131 | atomic_inc(&vcc->stats->rx_err); | |
2132 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
864a3ff6 | 2133 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2134 | vc->rx_iov = NULL; |
2135 | recycle_iov_buf(card, iovb); | |
2136 | return; | |
2137 | } | |
2138 | } | |
864a3ff6 | 2139 | #endif /* EXTRA_DEBUG */ |
098fde11 C |
2140 | |
2141 | if (ns_rsqe_eopdu(rsqe)) { | |
2142 | /* This works correctly regardless of the endianness of the host */ | |
864a3ff6 C |
2143 | unsigned char *L1L2 = (unsigned char *) |
2144 | (skb->data + iov->iov_len - 6); | |
098fde11 C |
2145 | aal5_len = L1L2[0] << 8 | L1L2[1]; |
2146 | len = (aal5_len == 0x0000) ? 0x10000 : aal5_len; | |
2147 | if (ns_rsqe_crcerr(rsqe) || | |
2148 | len + 8 > iovb->len || len + (47 + 8) < iovb->len) { | |
2149 | printk("nicstar%d: AAL5 CRC error", card->index); | |
2150 | if (len + 8 > iovb->len || len + (47 + 8) < iovb->len) | |
2151 | printk(" - PDU size mismatch.\n"); | |
2152 | else | |
2153 | printk(".\n"); | |
2154 | atomic_inc(&vcc->stats->rx_err); | |
2155 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
864a3ff6 | 2156 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2157 | vc->rx_iov = NULL; |
2158 | recycle_iov_buf(card, iovb); | |
2159 | return; | |
2160 | } | |
2161 | ||
2162 | /* By this point we (hopefully) have a complete SDU without errors. */ | |
2163 | ||
864a3ff6 | 2164 | if (NS_PRV_IOVCNT(iovb) == 1) { /* Just a small buffer */ |
098fde11 C |
2165 | /* skb points to a small buffer */ |
2166 | if (!atm_charge(vcc, skb->truesize)) { | |
2167 | push_rxbufs(card, skb); | |
2168 | atomic_inc(&vcc->stats->rx_drop); | |
2169 | } else { | |
2170 | skb_put(skb, len); | |
2171 | dequeue_sm_buf(card, skb); | |
1da177e4 | 2172 | #ifdef NS_USE_DESTRUCTORS |
098fde11 | 2173 | skb->destructor = ns_sb_destructor; |
1da177e4 | 2174 | #endif /* NS_USE_DESTRUCTORS */ |
098fde11 C |
2175 | ATM_SKB(skb)->vcc = vcc; |
2176 | __net_timestamp(skb); | |
2177 | vcc->push(vcc, skb); | |
2178 | atomic_inc(&vcc->stats->rx); | |
2179 | } | |
864a3ff6 | 2180 | } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */ |
098fde11 C |
2181 | struct sk_buff *sb; |
2182 | ||
2183 | sb = (struct sk_buff *)(iov - 1)->iov_base; | |
2184 | /* skb points to a large buffer */ | |
2185 | ||
2186 | if (len <= NS_SMBUFSIZE) { | |
2187 | if (!atm_charge(vcc, sb->truesize)) { | |
2188 | push_rxbufs(card, sb); | |
2189 | atomic_inc(&vcc->stats->rx_drop); | |
2190 | } else { | |
2191 | skb_put(sb, len); | |
2192 | dequeue_sm_buf(card, sb); | |
1da177e4 | 2193 | #ifdef NS_USE_DESTRUCTORS |
098fde11 | 2194 | sb->destructor = ns_sb_destructor; |
1da177e4 | 2195 | #endif /* NS_USE_DESTRUCTORS */ |
098fde11 C |
2196 | ATM_SKB(sb)->vcc = vcc; |
2197 | __net_timestamp(sb); | |
2198 | vcc->push(vcc, sb); | |
2199 | atomic_inc(&vcc->stats->rx); | |
2200 | } | |
2201 | ||
2202 | push_rxbufs(card, skb); | |
2203 | ||
2204 | } else { /* len > NS_SMBUFSIZE, the usual case */ | |
2205 | ||
2206 | if (!atm_charge(vcc, skb->truesize)) { | |
2207 | push_rxbufs(card, skb); | |
2208 | atomic_inc(&vcc->stats->rx_drop); | |
2209 | } else { | |
2210 | dequeue_lg_buf(card, skb); | |
1da177e4 | 2211 | #ifdef NS_USE_DESTRUCTORS |
098fde11 | 2212 | skb->destructor = ns_lb_destructor; |
1da177e4 | 2213 | #endif /* NS_USE_DESTRUCTORS */ |
098fde11 C |
2214 | skb_push(skb, NS_SMBUFSIZE); |
2215 | skb_copy_from_linear_data(sb, skb->data, | |
2216 | NS_SMBUFSIZE); | |
2217 | skb_put(skb, len - NS_SMBUFSIZE); | |
2218 | ATM_SKB(skb)->vcc = vcc; | |
2219 | __net_timestamp(skb); | |
2220 | vcc->push(vcc, skb); | |
2221 | atomic_inc(&vcc->stats->rx); | |
2222 | } | |
2223 | ||
2224 | push_rxbufs(card, sb); | |
2225 | ||
2226 | } | |
2227 | ||
2228 | } else { /* Must push a huge buffer */ | |
2229 | ||
2230 | struct sk_buff *hb, *sb, *lb; | |
2231 | int remaining, tocopy; | |
2232 | int j; | |
2233 | ||
2234 | hb = skb_dequeue(&(card->hbpool.queue)); | |
2235 | if (hb == NULL) { /* No buffers in the queue */ | |
2236 | ||
2237 | hb = dev_alloc_skb(NS_HBUFSIZE); | |
2238 | if (hb == NULL) { | |
2239 | printk | |
2240 | ("nicstar%d: Out of huge buffers.\n", | |
2241 | card->index); | |
2242 | atomic_inc(&vcc->stats->rx_drop); | |
2243 | recycle_iovec_rx_bufs(card, | |
2244 | (struct iovec *) | |
2245 | iovb->data, | |
864a3ff6 | 2246 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2247 | vc->rx_iov = NULL; |
2248 | recycle_iov_buf(card, iovb); | |
2249 | return; | |
2250 | } else if (card->hbpool.count < card->hbnr.min) { | |
2251 | struct sk_buff *new_hb; | |
2252 | if ((new_hb = | |
2253 | dev_alloc_skb(NS_HBUFSIZE)) != | |
2254 | NULL) { | |
2255 | skb_queue_tail(&card->hbpool. | |
2256 | queue, new_hb); | |
2257 | card->hbpool.count++; | |
2258 | } | |
2259 | } | |
864a3ff6 | 2260 | NS_PRV_BUFTYPE(hb) = BUF_NONE; |
098fde11 C |
2261 | } else if (--card->hbpool.count < card->hbnr.min) { |
2262 | struct sk_buff *new_hb; | |
2263 | if ((new_hb = | |
2264 | dev_alloc_skb(NS_HBUFSIZE)) != NULL) { | |
864a3ff6 | 2265 | NS_PRV_BUFTYPE(new_hb) = BUF_NONE; |
098fde11 C |
2266 | skb_queue_tail(&card->hbpool.queue, |
2267 | new_hb); | |
2268 | card->hbpool.count++; | |
2269 | } | |
2270 | if (card->hbpool.count < card->hbnr.min) { | |
2271 | if ((new_hb = | |
2272 | dev_alloc_skb(NS_HBUFSIZE)) != | |
2273 | NULL) { | |
864a3ff6 | 2274 | NS_PRV_BUFTYPE(new_hb) = |
098fde11 C |
2275 | BUF_NONE; |
2276 | skb_queue_tail(&card->hbpool. | |
2277 | queue, new_hb); | |
2278 | card->hbpool.count++; | |
2279 | } | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | iov = (struct iovec *)iovb->data; | |
2284 | ||
2285 | if (!atm_charge(vcc, hb->truesize)) { | |
2286 | recycle_iovec_rx_bufs(card, iov, | |
864a3ff6 | 2287 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2288 | if (card->hbpool.count < card->hbnr.max) { |
2289 | skb_queue_tail(&card->hbpool.queue, hb); | |
2290 | card->hbpool.count++; | |
2291 | } else | |
2292 | dev_kfree_skb_any(hb); | |
2293 | atomic_inc(&vcc->stats->rx_drop); | |
2294 | } else { | |
2295 | /* Copy the small buffer to the huge buffer */ | |
2296 | sb = (struct sk_buff *)iov->iov_base; | |
2297 | skb_copy_from_linear_data(sb, hb->data, | |
2298 | iov->iov_len); | |
2299 | skb_put(hb, iov->iov_len); | |
2300 | remaining = len - iov->iov_len; | |
2301 | iov++; | |
2302 | /* Free the small buffer */ | |
2303 | push_rxbufs(card, sb); | |
2304 | ||
2305 | /* Copy all large buffers to the huge buffer and free them */ | |
864a3ff6 | 2306 | for (j = 1; j < NS_PRV_IOVCNT(iovb); j++) { |
098fde11 C |
2307 | lb = (struct sk_buff *)iov->iov_base; |
2308 | tocopy = | |
2309 | min_t(int, remaining, iov->iov_len); | |
2310 | skb_copy_from_linear_data(lb, | |
2311 | skb_tail_pointer | |
2312 | (hb), tocopy); | |
2313 | skb_put(hb, tocopy); | |
2314 | iov++; | |
2315 | remaining -= tocopy; | |
2316 | push_rxbufs(card, lb); | |
2317 | } | |
1da177e4 | 2318 | #ifdef EXTRA_DEBUG |
098fde11 C |
2319 | if (remaining != 0 || hb->len != len) |
2320 | printk | |
2321 | ("nicstar%d: Huge buffer len mismatch.\n", | |
2322 | card->index); | |
1da177e4 | 2323 | #endif /* EXTRA_DEBUG */ |
098fde11 | 2324 | ATM_SKB(hb)->vcc = vcc; |
1da177e4 | 2325 | #ifdef NS_USE_DESTRUCTORS |
098fde11 | 2326 | hb->destructor = ns_hb_destructor; |
1da177e4 | 2327 | #endif /* NS_USE_DESTRUCTORS */ |
098fde11 C |
2328 | __net_timestamp(hb); |
2329 | vcc->push(vcc, hb); | |
2330 | atomic_inc(&vcc->stats->rx); | |
2331 | } | |
2332 | } | |
1da177e4 | 2333 | |
098fde11 C |
2334 | vc->rx_iov = NULL; |
2335 | recycle_iov_buf(card, iovb); | |
2336 | } | |
1da177e4 LT |
2337 | |
2338 | } | |
2339 | ||
1da177e4 LT |
2340 | #ifdef NS_USE_DESTRUCTORS |
2341 | ||
2342 | static void ns_sb_destructor(struct sk_buff *sb) | |
2343 | { | |
098fde11 C |
2344 | ns_dev *card; |
2345 | u32 stat; | |
2346 | ||
2347 | card = (ns_dev *) ATM_SKB(sb)->vcc->dev->dev_data; | |
2348 | stat = readl(card->membase + STAT); | |
2349 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
2350 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
2351 | ||
2352 | do { | |
2353 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); | |
2354 | if (sb == NULL) | |
2355 | break; | |
864a3ff6 | 2356 | NS_PRV_BUFTYPE(sb) = BUF_SM; |
098fde11 C |
2357 | skb_queue_tail(&card->sbpool.queue, sb); |
2358 | skb_reserve(sb, NS_AAL0_HEADER); | |
2359 | push_rxbufs(card, sb); | |
2360 | } while (card->sbfqc < card->sbnr.min); | |
1da177e4 LT |
2361 | } |
2362 | ||
1da177e4 LT |
2363 | static void ns_lb_destructor(struct sk_buff *lb) |
2364 | { | |
098fde11 C |
2365 | ns_dev *card; |
2366 | u32 stat; | |
2367 | ||
2368 | card = (ns_dev *) ATM_SKB(lb)->vcc->dev->dev_data; | |
2369 | stat = readl(card->membase + STAT); | |
2370 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
2371 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
2372 | ||
2373 | do { | |
2374 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); | |
2375 | if (lb == NULL) | |
2376 | break; | |
864a3ff6 | 2377 | NS_PRV_BUFTYPE(lb) = BUF_LG; |
098fde11 C |
2378 | skb_queue_tail(&card->lbpool.queue, lb); |
2379 | skb_reserve(lb, NS_SMBUFSIZE); | |
2380 | push_rxbufs(card, lb); | |
2381 | } while (card->lbfqc < card->lbnr.min); | |
1da177e4 LT |
2382 | } |
2383 | ||
1da177e4 LT |
2384 | static void ns_hb_destructor(struct sk_buff *hb) |
2385 | { | |
098fde11 C |
2386 | ns_dev *card; |
2387 | ||
2388 | card = (ns_dev *) ATM_SKB(hb)->vcc->dev->dev_data; | |
2389 | ||
2390 | while (card->hbpool.count < card->hbnr.init) { | |
2391 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); | |
2392 | if (hb == NULL) | |
2393 | break; | |
864a3ff6 | 2394 | NS_PRV_BUFTYPE(hb) = BUF_NONE; |
098fde11 C |
2395 | skb_queue_tail(&card->hbpool.queue, hb); |
2396 | card->hbpool.count++; | |
2397 | } | |
1da177e4 LT |
2398 | } |
2399 | ||
2400 | #endif /* NS_USE_DESTRUCTORS */ | |
2401 | ||
098fde11 | 2402 | static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb) |
1da177e4 | 2403 | { |
864a3ff6 | 2404 | if (unlikely(NS_PRV_BUFTYPE(skb) == BUF_NONE)) { |
098fde11 C |
2405 | printk("nicstar%d: What kind of rx buffer is this?\n", |
2406 | card->index); | |
8728b834 DM |
2407 | dev_kfree_skb_any(skb); |
2408 | } else | |
2409 | push_rxbufs(card, skb); | |
2410 | } | |
1da177e4 | 2411 | |
098fde11 | 2412 | static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count) |
1da177e4 | 2413 | { |
8728b834 | 2414 | while (count-- > 0) |
098fde11 | 2415 | recycle_rx_buf(card, (struct sk_buff *)(iov++)->iov_base); |
1da177e4 LT |
2416 | } |
2417 | ||
098fde11 | 2418 | static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb) |
1da177e4 | 2419 | { |
098fde11 C |
2420 | if (card->iovpool.count < card->iovnr.max) { |
2421 | skb_queue_tail(&card->iovpool.queue, iovb); | |
2422 | card->iovpool.count++; | |
2423 | } else | |
2424 | dev_kfree_skb_any(iovb); | |
1da177e4 LT |
2425 | } |
2426 | ||
098fde11 | 2427 | static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb) |
1da177e4 | 2428 | { |
098fde11 | 2429 | skb_unlink(sb, &card->sbpool.queue); |
1da177e4 | 2430 | #ifdef NS_USE_DESTRUCTORS |
098fde11 | 2431 | if (card->sbfqc < card->sbnr.min) |
1da177e4 | 2432 | #else |
098fde11 C |
2433 | if (card->sbfqc < card->sbnr.init) { |
2434 | struct sk_buff *new_sb; | |
2435 | if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { | |
864a3ff6 | 2436 | NS_PRV_BUFTYPE(new_sb) = BUF_SM; |
098fde11 C |
2437 | skb_queue_tail(&card->sbpool.queue, new_sb); |
2438 | skb_reserve(new_sb, NS_AAL0_HEADER); | |
2439 | push_rxbufs(card, new_sb); | |
2440 | } | |
2441 | } | |
2442 | if (card->sbfqc < card->sbnr.init) | |
1da177e4 | 2443 | #endif /* NS_USE_DESTRUCTORS */ |
098fde11 C |
2444 | { |
2445 | struct sk_buff *new_sb; | |
2446 | if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { | |
864a3ff6 | 2447 | NS_PRV_BUFTYPE(new_sb) = BUF_SM; |
098fde11 C |
2448 | skb_queue_tail(&card->sbpool.queue, new_sb); |
2449 | skb_reserve(new_sb, NS_AAL0_HEADER); | |
2450 | push_rxbufs(card, new_sb); | |
2451 | } | |
2452 | } | |
1da177e4 LT |
2453 | } |
2454 | ||
098fde11 | 2455 | static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb) |
1da177e4 | 2456 | { |
098fde11 | 2457 | skb_unlink(lb, &card->lbpool.queue); |
1da177e4 | 2458 | #ifdef NS_USE_DESTRUCTORS |
098fde11 | 2459 | if (card->lbfqc < card->lbnr.min) |
1da177e4 | 2460 | #else |
098fde11 C |
2461 | if (card->lbfqc < card->lbnr.init) { |
2462 | struct sk_buff *new_lb; | |
2463 | if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { | |
864a3ff6 | 2464 | NS_PRV_BUFTYPE(new_lb) = BUF_LG; |
098fde11 C |
2465 | skb_queue_tail(&card->lbpool.queue, new_lb); |
2466 | skb_reserve(new_lb, NS_SMBUFSIZE); | |
2467 | push_rxbufs(card, new_lb); | |
2468 | } | |
2469 | } | |
2470 | if (card->lbfqc < card->lbnr.init) | |
1da177e4 | 2471 | #endif /* NS_USE_DESTRUCTORS */ |
098fde11 C |
2472 | { |
2473 | struct sk_buff *new_lb; | |
2474 | if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { | |
864a3ff6 | 2475 | NS_PRV_BUFTYPE(new_lb) = BUF_LG; |
098fde11 C |
2476 | skb_queue_tail(&card->lbpool.queue, new_lb); |
2477 | skb_reserve(new_lb, NS_SMBUFSIZE); | |
2478 | push_rxbufs(card, new_lb); | |
2479 | } | |
2480 | } | |
1da177e4 LT |
2481 | } |
2482 | ||
098fde11 | 2483 | static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page) |
1da177e4 | 2484 | { |
098fde11 C |
2485 | u32 stat; |
2486 | ns_dev *card; | |
2487 | int left; | |
2488 | ||
2489 | left = (int)*pos; | |
2490 | card = (ns_dev *) dev->dev_data; | |
2491 | stat = readl(card->membase + STAT); | |
2492 | if (!left--) | |
2493 | return sprintf(page, "Pool count min init max \n"); | |
2494 | if (!left--) | |
2495 | return sprintf(page, "Small %5d %5d %5d %5d \n", | |
2496 | ns_stat_sfbqc_get(stat), card->sbnr.min, | |
2497 | card->sbnr.init, card->sbnr.max); | |
2498 | if (!left--) | |
2499 | return sprintf(page, "Large %5d %5d %5d %5d \n", | |
2500 | ns_stat_lfbqc_get(stat), card->lbnr.min, | |
2501 | card->lbnr.init, card->lbnr.max); | |
2502 | if (!left--) | |
2503 | return sprintf(page, "Huge %5d %5d %5d %5d \n", | |
2504 | card->hbpool.count, card->hbnr.min, | |
2505 | card->hbnr.init, card->hbnr.max); | |
2506 | if (!left--) | |
2507 | return sprintf(page, "Iovec %5d %5d %5d %5d \n", | |
2508 | card->iovpool.count, card->iovnr.min, | |
2509 | card->iovnr.init, card->iovnr.max); | |
2510 | if (!left--) { | |
2511 | int retval; | |
2512 | retval = | |
2513 | sprintf(page, "Interrupt counter: %u \n", card->intcnt); | |
2514 | card->intcnt = 0; | |
2515 | return retval; | |
2516 | } | |
1da177e4 | 2517 | #if 0 |
098fde11 C |
2518 | /* Dump 25.6 Mbps PHY registers */ |
2519 | /* Now there's a 25.6 Mbps PHY driver this code isn't needed. I left it | |
2520 | here just in case it's needed for debugging. */ | |
2521 | if (card->max_pcr == ATM_25_PCR && !left--) { | |
2522 | u32 phy_regs[4]; | |
2523 | u32 i; | |
2524 | ||
2525 | for (i = 0; i < 4; i++) { | |
2526 | while (CMD_BUSY(card)) ; | |
2527 | writel(NS_CMD_READ_UTILITY | 0x00000200 | i, | |
2528 | card->membase + CMD); | |
2529 | while (CMD_BUSY(card)) ; | |
2530 | phy_regs[i] = readl(card->membase + DR0) & 0x000000FF; | |
2531 | } | |
2532 | ||
2533 | return sprintf(page, "PHY regs: 0x%02X 0x%02X 0x%02X 0x%02X \n", | |
2534 | phy_regs[0], phy_regs[1], phy_regs[2], | |
2535 | phy_regs[3]); | |
2536 | } | |
1da177e4 LT |
2537 | #endif /* 0 - Dump 25.6 Mbps PHY registers */ |
2538 | #if 0 | |
098fde11 C |
2539 | /* Dump TST */ |
2540 | if (left-- < NS_TST_NUM_ENTRIES) { | |
2541 | if (card->tste2vc[left + 1] == NULL) | |
2542 | return sprintf(page, "%5d - VBR/UBR \n", left + 1); | |
2543 | else | |
2544 | return sprintf(page, "%5d - %d %d \n", left + 1, | |
2545 | card->tste2vc[left + 1]->tx_vcc->vpi, | |
2546 | card->tste2vc[left + 1]->tx_vcc->vci); | |
2547 | } | |
1da177e4 | 2548 | #endif /* 0 */ |
098fde11 | 2549 | return 0; |
1da177e4 LT |
2550 | } |
2551 | ||
098fde11 | 2552 | static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg) |
1da177e4 | 2553 | { |
098fde11 C |
2554 | ns_dev *card; |
2555 | pool_levels pl; | |
2556 | long btype; | |
2557 | unsigned long flags; | |
2558 | ||
2559 | card = dev->dev_data; | |
2560 | switch (cmd) { | |
2561 | case NS_GETPSTAT: | |
2562 | if (get_user | |
2563 | (pl.buftype, &((pool_levels __user *) arg)->buftype)) | |
2564 | return -EFAULT; | |
2565 | switch (pl.buftype) { | |
2566 | case NS_BUFTYPE_SMALL: | |
2567 | pl.count = | |
2568 | ns_stat_sfbqc_get(readl(card->membase + STAT)); | |
2569 | pl.level.min = card->sbnr.min; | |
2570 | pl.level.init = card->sbnr.init; | |
2571 | pl.level.max = card->sbnr.max; | |
2572 | break; | |
2573 | ||
2574 | case NS_BUFTYPE_LARGE: | |
2575 | pl.count = | |
2576 | ns_stat_lfbqc_get(readl(card->membase + STAT)); | |
2577 | pl.level.min = card->lbnr.min; | |
2578 | pl.level.init = card->lbnr.init; | |
2579 | pl.level.max = card->lbnr.max; | |
2580 | break; | |
2581 | ||
2582 | case NS_BUFTYPE_HUGE: | |
2583 | pl.count = card->hbpool.count; | |
2584 | pl.level.min = card->hbnr.min; | |
2585 | pl.level.init = card->hbnr.init; | |
2586 | pl.level.max = card->hbnr.max; | |
2587 | break; | |
2588 | ||
2589 | case NS_BUFTYPE_IOVEC: | |
2590 | pl.count = card->iovpool.count; | |
2591 | pl.level.min = card->iovnr.min; | |
2592 | pl.level.init = card->iovnr.init; | |
2593 | pl.level.max = card->iovnr.max; | |
2594 | break; | |
2595 | ||
2596 | default: | |
2597 | return -ENOIOCTLCMD; | |
2598 | ||
2599 | } | |
2600 | if (!copy_to_user((pool_levels __user *) arg, &pl, sizeof(pl))) | |
2601 | return (sizeof(pl)); | |
2602 | else | |
2603 | return -EFAULT; | |
2604 | ||
2605 | case NS_SETBUFLEV: | |
2606 | if (!capable(CAP_NET_ADMIN)) | |
2607 | return -EPERM; | |
2608 | if (copy_from_user(&pl, (pool_levels __user *) arg, sizeof(pl))) | |
2609 | return -EFAULT; | |
2610 | if (pl.level.min >= pl.level.init | |
2611 | || pl.level.init >= pl.level.max) | |
2612 | return -EINVAL; | |
2613 | if (pl.level.min == 0) | |
2614 | return -EINVAL; | |
2615 | switch (pl.buftype) { | |
2616 | case NS_BUFTYPE_SMALL: | |
2617 | if (pl.level.max > TOP_SB) | |
2618 | return -EINVAL; | |
2619 | card->sbnr.min = pl.level.min; | |
2620 | card->sbnr.init = pl.level.init; | |
2621 | card->sbnr.max = pl.level.max; | |
2622 | break; | |
2623 | ||
2624 | case NS_BUFTYPE_LARGE: | |
2625 | if (pl.level.max > TOP_LB) | |
2626 | return -EINVAL; | |
2627 | card->lbnr.min = pl.level.min; | |
2628 | card->lbnr.init = pl.level.init; | |
2629 | card->lbnr.max = pl.level.max; | |
2630 | break; | |
2631 | ||
2632 | case NS_BUFTYPE_HUGE: | |
2633 | if (pl.level.max > TOP_HB) | |
2634 | return -EINVAL; | |
2635 | card->hbnr.min = pl.level.min; | |
2636 | card->hbnr.init = pl.level.init; | |
2637 | card->hbnr.max = pl.level.max; | |
2638 | break; | |
2639 | ||
2640 | case NS_BUFTYPE_IOVEC: | |
2641 | if (pl.level.max > TOP_IOVB) | |
2642 | return -EINVAL; | |
2643 | card->iovnr.min = pl.level.min; | |
2644 | card->iovnr.init = pl.level.init; | |
2645 | card->iovnr.max = pl.level.max; | |
2646 | break; | |
2647 | ||
2648 | default: | |
2649 | return -EINVAL; | |
2650 | ||
2651 | } | |
2652 | return 0; | |
2653 | ||
2654 | case NS_ADJBUFLEV: | |
2655 | if (!capable(CAP_NET_ADMIN)) | |
2656 | return -EPERM; | |
2657 | btype = (long)arg; /* a long is the same size as a pointer or bigger */ | |
2658 | switch (btype) { | |
2659 | case NS_BUFTYPE_SMALL: | |
2660 | while (card->sbfqc < card->sbnr.init) { | |
2661 | struct sk_buff *sb; | |
2662 | ||
2663 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); | |
2664 | if (sb == NULL) | |
2665 | return -ENOMEM; | |
864a3ff6 | 2666 | NS_PRV_BUFTYPE(sb) = BUF_SM; |
098fde11 C |
2667 | skb_queue_tail(&card->sbpool.queue, sb); |
2668 | skb_reserve(sb, NS_AAL0_HEADER); | |
2669 | push_rxbufs(card, sb); | |
2670 | } | |
2671 | break; | |
2672 | ||
2673 | case NS_BUFTYPE_LARGE: | |
2674 | while (card->lbfqc < card->lbnr.init) { | |
2675 | struct sk_buff *lb; | |
2676 | ||
2677 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); | |
2678 | if (lb == NULL) | |
2679 | return -ENOMEM; | |
864a3ff6 | 2680 | NS_PRV_BUFTYPE(lb) = BUF_LG; |
098fde11 C |
2681 | skb_queue_tail(&card->lbpool.queue, lb); |
2682 | skb_reserve(lb, NS_SMBUFSIZE); | |
2683 | push_rxbufs(card, lb); | |
2684 | } | |
2685 | break; | |
2686 | ||
2687 | case NS_BUFTYPE_HUGE: | |
2688 | while (card->hbpool.count > card->hbnr.init) { | |
2689 | struct sk_buff *hb; | |
2690 | ||
2691 | spin_lock_irqsave(&card->int_lock, flags); | |
2692 | hb = skb_dequeue(&card->hbpool.queue); | |
2693 | card->hbpool.count--; | |
2694 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2695 | if (hb == NULL) | |
2696 | printk | |
2697 | ("nicstar%d: huge buffer count inconsistent.\n", | |
2698 | card->index); | |
2699 | else | |
2700 | dev_kfree_skb_any(hb); | |
2701 | ||
2702 | } | |
2703 | while (card->hbpool.count < card->hbnr.init) { | |
2704 | struct sk_buff *hb; | |
2705 | ||
2706 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); | |
2707 | if (hb == NULL) | |
2708 | return -ENOMEM; | |
864a3ff6 | 2709 | NS_PRV_BUFTYPE(hb) = BUF_NONE; |
098fde11 C |
2710 | spin_lock_irqsave(&card->int_lock, flags); |
2711 | skb_queue_tail(&card->hbpool.queue, hb); | |
2712 | card->hbpool.count++; | |
2713 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2714 | } | |
2715 | break; | |
2716 | ||
2717 | case NS_BUFTYPE_IOVEC: | |
2718 | while (card->iovpool.count > card->iovnr.init) { | |
2719 | struct sk_buff *iovb; | |
2720 | ||
2721 | spin_lock_irqsave(&card->int_lock, flags); | |
2722 | iovb = skb_dequeue(&card->iovpool.queue); | |
2723 | card->iovpool.count--; | |
2724 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2725 | if (iovb == NULL) | |
2726 | printk | |
2727 | ("nicstar%d: iovec buffer count inconsistent.\n", | |
2728 | card->index); | |
2729 | else | |
2730 | dev_kfree_skb_any(iovb); | |
2731 | ||
2732 | } | |
2733 | while (card->iovpool.count < card->iovnr.init) { | |
2734 | struct sk_buff *iovb; | |
2735 | ||
2736 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); | |
2737 | if (iovb == NULL) | |
2738 | return -ENOMEM; | |
864a3ff6 | 2739 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
2740 | spin_lock_irqsave(&card->int_lock, flags); |
2741 | skb_queue_tail(&card->iovpool.queue, iovb); | |
2742 | card->iovpool.count++; | |
2743 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2744 | } | |
2745 | break; | |
2746 | ||
2747 | default: | |
2748 | return -EINVAL; | |
2749 | ||
2750 | } | |
2751 | return 0; | |
2752 | ||
2753 | default: | |
2754 | if (dev->phy && dev->phy->ioctl) { | |
2755 | return dev->phy->ioctl(dev, cmd, arg); | |
2756 | } else { | |
2757 | printk("nicstar%d: %s == NULL \n", card->index, | |
2758 | dev->phy ? "dev->phy->ioctl" : "dev->phy"); | |
2759 | return -ENOIOCTLCMD; | |
2760 | } | |
2761 | } | |
1da177e4 LT |
2762 | } |
2763 | ||
864a3ff6 | 2764 | #ifdef EXTRA_DEBUG |
098fde11 | 2765 | static void which_list(ns_dev * card, struct sk_buff *skb) |
1da177e4 | 2766 | { |
864a3ff6 | 2767 | printk("skb buf_type: 0x%08x\n", NS_PRV_BUFTYPE(skb)); |
1da177e4 | 2768 | } |
864a3ff6 | 2769 | #endif /* EXTRA_DEBUG */ |
1da177e4 | 2770 | |
1da177e4 LT |
2771 | static void ns_poll(unsigned long arg) |
2772 | { | |
098fde11 C |
2773 | int i; |
2774 | ns_dev *card; | |
2775 | unsigned long flags; | |
2776 | u32 stat_r, stat_w; | |
2777 | ||
2778 | PRINTK("nicstar: Entering ns_poll().\n"); | |
2779 | for (i = 0; i < num_cards; i++) { | |
2780 | card = cards[i]; | |
2781 | if (spin_is_locked(&card->int_lock)) { | |
2782 | /* Probably it isn't worth spinning */ | |
2783 | continue; | |
2784 | } | |
2785 | spin_lock_irqsave(&card->int_lock, flags); | |
2786 | ||
2787 | stat_w = 0; | |
2788 | stat_r = readl(card->membase + STAT); | |
2789 | if (stat_r & NS_STAT_TSIF) | |
2790 | stat_w |= NS_STAT_TSIF; | |
2791 | if (stat_r & NS_STAT_EOPDU) | |
2792 | stat_w |= NS_STAT_EOPDU; | |
2793 | ||
2794 | process_tsq(card); | |
2795 | process_rsq(card); | |
2796 | ||
2797 | writel(stat_w, card->membase + STAT); | |
2798 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2799 | } | |
2800 | mod_timer(&ns_timer, jiffies + NS_POLL_PERIOD); | |
2801 | PRINTK("nicstar: Leaving ns_poll().\n"); | |
1da177e4 LT |
2802 | } |
2803 | ||
1da177e4 | 2804 | static void ns_phy_put(struct atm_dev *dev, unsigned char value, |
098fde11 | 2805 | unsigned long addr) |
1da177e4 | 2806 | { |
098fde11 C |
2807 | ns_dev *card; |
2808 | unsigned long flags; | |
2809 | ||
2810 | card = dev->dev_data; | |
2811 | spin_lock_irqsave(&card->res_lock, flags); | |
2812 | while (CMD_BUSY(card)) ; | |
864a3ff6 | 2813 | writel((u32) value, card->membase + DR0); |
098fde11 C |
2814 | writel(NS_CMD_WRITE_UTILITY | 0x00000200 | (addr & 0x000000FF), |
2815 | card->membase + CMD); | |
2816 | spin_unlock_irqrestore(&card->res_lock, flags); | |
1da177e4 LT |
2817 | } |
2818 | ||
1da177e4 LT |
2819 | static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr) |
2820 | { | |
098fde11 C |
2821 | ns_dev *card; |
2822 | unsigned long flags; | |
864a3ff6 | 2823 | u32 data; |
098fde11 C |
2824 | |
2825 | card = dev->dev_data; | |
2826 | spin_lock_irqsave(&card->res_lock, flags); | |
2827 | while (CMD_BUSY(card)) ; | |
2828 | writel(NS_CMD_READ_UTILITY | 0x00000200 | (addr & 0x000000FF), | |
2829 | card->membase + CMD); | |
2830 | while (CMD_BUSY(card)) ; | |
2831 | data = readl(card->membase + DR0) & 0x000000FF; | |
2832 | spin_unlock_irqrestore(&card->res_lock, flags); | |
2833 | return (unsigned char)data; | |
1da177e4 LT |
2834 | } |
2835 | ||
1da177e4 LT |
2836 | module_init(nicstar_init); |
2837 | module_exit(nicstar_cleanup); |