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Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
098fde11 | 2 | /* |
1da177e4 LT |
3 | * nicstar.c |
4 | * | |
5 | * Device driver supporting CBR for IDT 77201/77211 "NICStAR" based cards. | |
6 | * | |
7 | * IMPORTANT: The included file nicstarmac.c was NOT WRITTEN BY ME. | |
8 | * It was taken from the frle-0.22 device driver. | |
9 | * As the file doesn't have a copyright notice, in the file | |
10 | * nicstarmac.copyright I put the copyright notice from the | |
11 | * frle-0.22 device driver. | |
12 | * Some code is based on the nicstar driver by M. Welsh. | |
13 | * | |
14 | * Author: Rui Prior (rprior@inescn.pt) | |
15 | * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999 | |
16 | * | |
17 | * | |
18 | * (C) INESC 1999 | |
098fde11 | 19 | */ |
1da177e4 | 20 | |
098fde11 C |
21 | /* |
22 | * IMPORTANT INFORMATION | |
1da177e4 LT |
23 | * |
24 | * There are currently three types of spinlocks: | |
25 | * | |
26 | * 1 - Per card interrupt spinlock (to protect structures and such) | |
27 | * 2 - Per SCQ scq spinlock | |
28 | * 3 - Per card resource spinlock (to access registers, etc.) | |
29 | * | |
30 | * These must NEVER be grabbed in reverse order. | |
31 | * | |
098fde11 | 32 | */ |
1da177e4 | 33 | |
098fde11 | 34 | /* Header files */ |
1da177e4 LT |
35 | |
36 | #include <linux/module.h> | |
1da177e4 LT |
37 | #include <linux/kernel.h> |
38 | #include <linux/skbuff.h> | |
39 | #include <linux/atmdev.h> | |
40 | #include <linux/atm.h> | |
41 | #include <linux/pci.h> | |
864a3ff6 | 42 | #include <linux/dma-mapping.h> |
1da177e4 LT |
43 | #include <linux/types.h> |
44 | #include <linux/string.h> | |
45 | #include <linux/delay.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/sched.h> | |
48 | #include <linux/timer.h> | |
49 | #include <linux/interrupt.h> | |
50 | #include <linux/bitops.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
864a3ff6 | 52 | #include <linux/idr.h> |
1da177e4 | 53 | #include <asm/io.h> |
7c0f6ba6 | 54 | #include <linux/uaccess.h> |
60063497 | 55 | #include <linux/atomic.h> |
4c55a462 | 56 | #include <linux/etherdevice.h> |
1da177e4 LT |
57 | #include "nicstar.h" |
58 | #ifdef CONFIG_ATM_NICSTAR_USE_SUNI | |
59 | #include "suni.h" | |
60 | #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ | |
61 | #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 | |
62 | #include "idt77105.h" | |
63 | #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ | |
64 | ||
098fde11 | 65 | /* Additional code */ |
1da177e4 LT |
66 | |
67 | #include "nicstarmac.c" | |
68 | ||
098fde11 | 69 | /* Configurable parameters */ |
1da177e4 LT |
70 | |
71 | #undef PHY_LOOPBACK | |
72 | #undef TX_DEBUG | |
73 | #undef RX_DEBUG | |
74 | #undef GENERAL_DEBUG | |
75 | #undef EXTRA_DEBUG | |
76 | ||
098fde11 | 77 | /* Do not touch these */ |
1da177e4 LT |
78 | |
79 | #ifdef TX_DEBUG | |
80 | #define TXPRINTK(args...) printk(args) | |
81 | #else | |
82 | #define TXPRINTK(args...) | |
83 | #endif /* TX_DEBUG */ | |
84 | ||
85 | #ifdef RX_DEBUG | |
86 | #define RXPRINTK(args...) printk(args) | |
87 | #else | |
88 | #define RXPRINTK(args...) | |
89 | #endif /* RX_DEBUG */ | |
90 | ||
91 | #ifdef GENERAL_DEBUG | |
92 | #define PRINTK(args...) printk(args) | |
93 | #else | |
94 | #define PRINTK(args...) | |
95 | #endif /* GENERAL_DEBUG */ | |
96 | ||
97 | #ifdef EXTRA_DEBUG | |
98 | #define XPRINTK(args...) printk(args) | |
99 | #else | |
100 | #define XPRINTK(args...) | |
101 | #endif /* EXTRA_DEBUG */ | |
102 | ||
098fde11 | 103 | /* Macros */ |
1da177e4 LT |
104 | |
105 | #define CMD_BUSY(card) (readl((card)->membase + STAT) & NS_STAT_CMDBZ) | |
106 | ||
107 | #define NS_DELAY mdelay(1) | |
108 | ||
864a3ff6 | 109 | #define PTR_DIFF(a, b) ((u32)((unsigned long)(a) - (unsigned long)(b))) |
1da177e4 LT |
110 | |
111 | #ifndef ATM_SKB | |
112 | #define ATM_SKB(s) (&(s)->atm) | |
113 | #endif | |
114 | ||
864a3ff6 C |
115 | #define scq_virt_to_bus(scq, p) \ |
116 | (scq->dma + ((unsigned long)(p) - (unsigned long)(scq)->org)) | |
117 | ||
098fde11 | 118 | /* Function declarations */ |
1da177e4 | 119 | |
098fde11 C |
120 | static u32 ns_read_sram(ns_dev * card, u32 sram_address); |
121 | static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, | |
122 | int count); | |
6c44512d GKH |
123 | static int ns_init_card(int i, struct pci_dev *pcidev); |
124 | static void ns_init_card_error(ns_dev * card, int error); | |
864a3ff6 C |
125 | static scq_info *get_scq(ns_dev *card, int size, u32 scd); |
126 | static void free_scq(ns_dev *card, scq_info * scq, struct atm_vcc *vcc); | |
8728b834 | 127 | static void push_rxbufs(ns_dev *, struct sk_buff *); |
7d12e780 | 128 | static irqreturn_t ns_irq_handler(int irq, void *dev_id); |
1da177e4 LT |
129 | static int ns_open(struct atm_vcc *vcc); |
130 | static void ns_close(struct atm_vcc *vcc); | |
098fde11 | 131 | static void fill_tst(ns_dev * card, int n, vc_map * vc); |
1da177e4 | 132 | static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb); |
098fde11 C |
133 | static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, |
134 | struct sk_buff *skb); | |
135 | static void process_tsq(ns_dev * card); | |
136 | static void drain_scq(ns_dev * card, scq_info * scq, int pos); | |
137 | static void process_rsq(ns_dev * card); | |
138 | static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe); | |
098fde11 C |
139 | static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb); |
140 | static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count); | |
141 | static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb); | |
142 | static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb); | |
143 | static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb); | |
144 | static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page); | |
145 | static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg); | |
864a3ff6 | 146 | #ifdef EXTRA_DEBUG |
098fde11 | 147 | static void which_list(ns_dev * card, struct sk_buff *skb); |
864a3ff6 | 148 | #endif |
e99e88a9 | 149 | static void ns_poll(struct timer_list *unused); |
1da177e4 | 150 | static void ns_phy_put(struct atm_dev *dev, unsigned char value, |
098fde11 | 151 | unsigned long addr); |
1da177e4 LT |
152 | static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr); |
153 | ||
098fde11 | 154 | /* Global variables */ |
1da177e4 LT |
155 | |
156 | static struct ns_dev *cards[NS_MAX_CARDS]; | |
157 | static unsigned num_cards; | |
46c4b7a5 | 158 | static const struct atmdev_ops atm_ops = { |
098fde11 C |
159 | .open = ns_open, |
160 | .close = ns_close, | |
161 | .ioctl = ns_ioctl, | |
162 | .send = ns_send, | |
163 | .phy_put = ns_phy_put, | |
164 | .phy_get = ns_phy_get, | |
165 | .proc_read = ns_proc_read, | |
166 | .owner = THIS_MODULE, | |
1da177e4 | 167 | }; |
098fde11 | 168 | |
1da177e4 LT |
169 | static struct timer_list ns_timer; |
170 | static char *mac[NS_MAX_CARDS]; | |
171 | module_param_array(mac, charp, NULL, 0); | |
172 | MODULE_LICENSE("GPL"); | |
173 | ||
098fde11 | 174 | /* Functions */ |
1da177e4 | 175 | |
6c44512d GKH |
176 | static int nicstar_init_one(struct pci_dev *pcidev, |
177 | const struct pci_device_id *ent) | |
1da177e4 | 178 | { |
098fde11 C |
179 | static int index = -1; |
180 | unsigned int error; | |
1da177e4 | 181 | |
098fde11 C |
182 | index++; |
183 | cards[index] = NULL; | |
1da177e4 | 184 | |
098fde11 C |
185 | error = ns_init_card(index, pcidev); |
186 | if (error) { | |
187 | cards[index--] = NULL; /* don't increment index */ | |
188 | goto err_out; | |
189 | } | |
1da177e4 | 190 | |
098fde11 | 191 | return 0; |
1da177e4 | 192 | err_out: |
098fde11 | 193 | return -ENODEV; |
1da177e4 LT |
194 | } |
195 | ||
6c44512d | 196 | static void nicstar_remove_one(struct pci_dev *pcidev) |
1da177e4 | 197 | { |
098fde11 C |
198 | int i, j; |
199 | ns_dev *card = pci_get_drvdata(pcidev); | |
200 | struct sk_buff *hb; | |
201 | struct sk_buff *iovb; | |
202 | struct sk_buff *lb; | |
203 | struct sk_buff *sb; | |
204 | ||
205 | i = card->index; | |
206 | ||
207 | if (cards[i] == NULL) | |
208 | return; | |
209 | ||
210 | if (card->atmdev->phy && card->atmdev->phy->stop) | |
211 | card->atmdev->phy->stop(card->atmdev); | |
212 | ||
213 | /* Stop everything */ | |
214 | writel(0x00000000, card->membase + CFG); | |
215 | ||
216 | /* De-register device */ | |
217 | atm_dev_deregister(card->atmdev); | |
218 | ||
219 | /* Disable PCI device */ | |
220 | pci_disable_device(pcidev); | |
221 | ||
222 | /* Free up resources */ | |
223 | j = 0; | |
224 | PRINTK("nicstar%d: freeing %d huge buffers.\n", i, card->hbpool.count); | |
225 | while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) { | |
226 | dev_kfree_skb_any(hb); | |
227 | j++; | |
228 | } | |
229 | PRINTK("nicstar%d: %d huge buffers freed.\n", i, j); | |
230 | j = 0; | |
231 | PRINTK("nicstar%d: freeing %d iovec buffers.\n", i, | |
232 | card->iovpool.count); | |
233 | while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) { | |
234 | dev_kfree_skb_any(iovb); | |
235 | j++; | |
236 | } | |
237 | PRINTK("nicstar%d: %d iovec buffers freed.\n", i, j); | |
238 | while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) | |
239 | dev_kfree_skb_any(lb); | |
240 | while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) | |
241 | dev_kfree_skb_any(sb); | |
864a3ff6 | 242 | free_scq(card, card->scq0, NULL); |
098fde11 C |
243 | for (j = 0; j < NS_FRSCD_NUM; j++) { |
244 | if (card->scd2vc[j] != NULL) | |
864a3ff6 C |
245 | free_scq(card, card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc); |
246 | } | |
864a3ff6 | 247 | idr_destroy(&card->idr); |
ede58ef2 C |
248 | dma_free_coherent(&card->pcidev->dev, NS_RSQSIZE + NS_RSQ_ALIGNMENT, |
249 | card->rsq.org, card->rsq.dma); | |
250 | dma_free_coherent(&card->pcidev->dev, NS_TSQSIZE + NS_TSQ_ALIGNMENT, | |
251 | card->tsq.org, card->tsq.dma); | |
098fde11 C |
252 | free_irq(card->pcidev->irq, card); |
253 | iounmap(card->membase); | |
254 | kfree(card); | |
1da177e4 LT |
255 | } |
256 | ||
2f3e2604 | 257 | static const struct pci_device_id nicstar_pci_tbl[] = { |
6df7b80c | 258 | { PCI_VDEVICE(IDT, PCI_DEVICE_ID_IDT_IDT77201), 0 }, |
1da177e4 LT |
259 | {0,} /* terminate list */ |
260 | }; | |
1da177e4 | 261 | |
098fde11 | 262 | MODULE_DEVICE_TABLE(pci, nicstar_pci_tbl); |
1da177e4 LT |
263 | |
264 | static struct pci_driver nicstar_driver = { | |
098fde11 C |
265 | .name = "nicstar", |
266 | .id_table = nicstar_pci_tbl, | |
267 | .probe = nicstar_init_one, | |
6c44512d | 268 | .remove = nicstar_remove_one, |
1da177e4 LT |
269 | }; |
270 | ||
1da177e4 LT |
271 | static int __init nicstar_init(void) |
272 | { | |
098fde11 | 273 | unsigned error = 0; /* Initialized to remove compile warning */ |
1da177e4 | 274 | |
098fde11 | 275 | XPRINTK("nicstar: nicstar_init() called.\n"); |
1da177e4 | 276 | |
098fde11 C |
277 | error = pci_register_driver(&nicstar_driver); |
278 | ||
279 | TXPRINTK("nicstar: TX debug enabled.\n"); | |
280 | RXPRINTK("nicstar: RX debug enabled.\n"); | |
281 | PRINTK("nicstar: General debug enabled.\n"); | |
1da177e4 | 282 | #ifdef PHY_LOOPBACK |
098fde11 | 283 | printk("nicstar: using PHY loopback.\n"); |
1da177e4 | 284 | #endif /* PHY_LOOPBACK */ |
098fde11 | 285 | XPRINTK("nicstar: nicstar_init() returned.\n"); |
1da177e4 | 286 | |
098fde11 | 287 | if (!error) { |
e99e88a9 | 288 | timer_setup(&ns_timer, ns_poll, 0); |
098fde11 | 289 | ns_timer.expires = jiffies + NS_POLL_PERIOD; |
098fde11 C |
290 | add_timer(&ns_timer); |
291 | } | |
1da177e4 | 292 | |
098fde11 C |
293 | return error; |
294 | } | |
1da177e4 LT |
295 | |
296 | static void __exit nicstar_cleanup(void) | |
297 | { | |
098fde11 | 298 | XPRINTK("nicstar: nicstar_cleanup() called.\n"); |
1da177e4 | 299 | |
098fde11 | 300 | del_timer(&ns_timer); |
1da177e4 | 301 | |
098fde11 | 302 | pci_unregister_driver(&nicstar_driver); |
1da177e4 | 303 | |
098fde11 | 304 | XPRINTK("nicstar: nicstar_cleanup() returned.\n"); |
1da177e4 LT |
305 | } |
306 | ||
098fde11 | 307 | static u32 ns_read_sram(ns_dev * card, u32 sram_address) |
1da177e4 | 308 | { |
098fde11 C |
309 | unsigned long flags; |
310 | u32 data; | |
311 | sram_address <<= 2; | |
312 | sram_address &= 0x0007FFFC; /* address must be dword aligned */ | |
313 | sram_address |= 0x50000000; /* SRAM read command */ | |
314 | spin_lock_irqsave(&card->res_lock, flags); | |
315 | while (CMD_BUSY(card)) ; | |
316 | writel(sram_address, card->membase + CMD); | |
317 | while (CMD_BUSY(card)) ; | |
318 | data = readl(card->membase + DR0); | |
319 | spin_unlock_irqrestore(&card->res_lock, flags); | |
320 | return data; | |
1da177e4 LT |
321 | } |
322 | ||
098fde11 C |
323 | static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, |
324 | int count) | |
1da177e4 | 325 | { |
098fde11 C |
326 | unsigned long flags; |
327 | int i, c; | |
328 | count--; /* count range now is 0..3 instead of 1..4 */ | |
329 | c = count; | |
330 | c <<= 2; /* to use increments of 4 */ | |
331 | spin_lock_irqsave(&card->res_lock, flags); | |
332 | while (CMD_BUSY(card)) ; | |
333 | for (i = 0; i <= c; i += 4) | |
334 | writel(*(value++), card->membase + i); | |
335 | /* Note: DR# registers are the first 4 dwords in nicstar's memspace, | |
336 | so card->membase + DR0 == card->membase */ | |
337 | sram_address <<= 2; | |
338 | sram_address &= 0x0007FFFC; | |
339 | sram_address |= (0x40000000 | count); | |
340 | writel(sram_address, card->membase + CMD); | |
341 | spin_unlock_irqrestore(&card->res_lock, flags); | |
1da177e4 LT |
342 | } |
343 | ||
6c44512d | 344 | static int ns_init_card(int i, struct pci_dev *pcidev) |
1da177e4 | 345 | { |
098fde11 C |
346 | int j; |
347 | struct ns_dev *card = NULL; | |
348 | unsigned char pci_latency; | |
349 | unsigned error; | |
350 | u32 data; | |
351 | u32 u32d[4]; | |
352 | u32 ns_cfg_rctsize; | |
353 | int bcount; | |
354 | unsigned long membase; | |
355 | ||
356 | error = 0; | |
357 | ||
358 | if (pci_enable_device(pcidev)) { | |
359 | printk("nicstar%d: can't enable PCI device\n", i); | |
360 | error = 2; | |
361 | ns_init_card_error(card, error); | |
362 | return error; | |
363 | } | |
ede58ef2 | 364 | if (dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32)) != 0) { |
864a3ff6 C |
365 | printk(KERN_WARNING |
366 | "nicstar%d: No suitable DMA available.\n", i); | |
367 | error = 2; | |
368 | ns_init_card_error(card, error); | |
369 | return error; | |
370 | } | |
098fde11 | 371 | |
304f0a4e ME |
372 | card = kmalloc(sizeof(*card), GFP_KERNEL); |
373 | if (!card) { | |
098fde11 C |
374 | printk |
375 | ("nicstar%d: can't allocate memory for device structure.\n", | |
376 | i); | |
377 | error = 2; | |
378 | ns_init_card_error(card, error); | |
379 | return error; | |
380 | } | |
381 | cards[i] = card; | |
382 | spin_lock_init(&card->int_lock); | |
383 | spin_lock_init(&card->res_lock); | |
384 | ||
385 | pci_set_drvdata(pcidev, card); | |
386 | ||
387 | card->index = i; | |
388 | card->atmdev = NULL; | |
389 | card->pcidev = pcidev; | |
390 | membase = pci_resource_start(pcidev, 1); | |
391 | card->membase = ioremap(membase, NS_IOREMAP_SIZE); | |
392 | if (!card->membase) { | |
393 | printk("nicstar%d: can't ioremap() membase.\n", i); | |
394 | error = 3; | |
395 | ns_init_card_error(card, error); | |
396 | return error; | |
397 | } | |
864a3ff6 | 398 | PRINTK("nicstar%d: membase at 0x%p.\n", i, card->membase); |
098fde11 C |
399 | |
400 | pci_set_master(pcidev); | |
401 | ||
402 | if (pci_read_config_byte(pcidev, PCI_LATENCY_TIMER, &pci_latency) != 0) { | |
403 | printk("nicstar%d: can't read PCI latency timer.\n", i); | |
404 | error = 6; | |
405 | ns_init_card_error(card, error); | |
406 | return error; | |
407 | } | |
1da177e4 | 408 | #ifdef NS_PCI_LATENCY |
098fde11 C |
409 | if (pci_latency < NS_PCI_LATENCY) { |
410 | PRINTK("nicstar%d: setting PCI latency timer to %d.\n", i, | |
411 | NS_PCI_LATENCY); | |
412 | for (j = 1; j < 4; j++) { | |
413 | if (pci_write_config_byte | |
414 | (pcidev, PCI_LATENCY_TIMER, NS_PCI_LATENCY) != 0) | |
415 | break; | |
416 | } | |
417 | if (j == 4) { | |
418 | printk | |
419 | ("nicstar%d: can't set PCI latency timer to %d.\n", | |
420 | i, NS_PCI_LATENCY); | |
421 | error = 7; | |
422 | ns_init_card_error(card, error); | |
423 | return error; | |
424 | } | |
425 | } | |
1da177e4 | 426 | #endif /* NS_PCI_LATENCY */ |
098fde11 C |
427 | |
428 | /* Clear timer overflow */ | |
429 | data = readl(card->membase + STAT); | |
430 | if (data & NS_STAT_TMROF) | |
431 | writel(NS_STAT_TMROF, card->membase + STAT); | |
432 | ||
433 | /* Software reset */ | |
434 | writel(NS_CFG_SWRST, card->membase + CFG); | |
435 | NS_DELAY; | |
436 | writel(0x00000000, card->membase + CFG); | |
437 | ||
438 | /* PHY reset */ | |
439 | writel(0x00000008, card->membase + GP); | |
440 | NS_DELAY; | |
441 | writel(0x00000001, card->membase + GP); | |
442 | NS_DELAY; | |
443 | while (CMD_BUSY(card)) ; | |
444 | writel(NS_CMD_WRITE_UTILITY | 0x00000100, card->membase + CMD); /* Sync UTOPIA with SAR clock */ | |
445 | NS_DELAY; | |
446 | ||
447 | /* Detect PHY type */ | |
448 | while (CMD_BUSY(card)) ; | |
449 | writel(NS_CMD_READ_UTILITY | 0x00000200, card->membase + CMD); | |
450 | while (CMD_BUSY(card)) ; | |
451 | data = readl(card->membase + DR0); | |
452 | switch (data) { | |
453 | case 0x00000009: | |
454 | printk("nicstar%d: PHY seems to be 25 Mbps.\n", i); | |
455 | card->max_pcr = ATM_25_PCR; | |
456 | while (CMD_BUSY(card)) ; | |
457 | writel(0x00000008, card->membase + DR0); | |
458 | writel(NS_CMD_WRITE_UTILITY | 0x00000200, card->membase + CMD); | |
459 | /* Clear an eventual pending interrupt */ | |
460 | writel(NS_STAT_SFBQF, card->membase + STAT); | |
1da177e4 | 461 | #ifdef PHY_LOOPBACK |
098fde11 C |
462 | while (CMD_BUSY(card)) ; |
463 | writel(0x00000022, card->membase + DR0); | |
464 | writel(NS_CMD_WRITE_UTILITY | 0x00000202, card->membase + CMD); | |
1da177e4 | 465 | #endif /* PHY_LOOPBACK */ |
098fde11 C |
466 | break; |
467 | case 0x00000030: | |
468 | case 0x00000031: | |
469 | printk("nicstar%d: PHY seems to be 155 Mbps.\n", i); | |
470 | card->max_pcr = ATM_OC3_PCR; | |
1da177e4 | 471 | #ifdef PHY_LOOPBACK |
098fde11 C |
472 | while (CMD_BUSY(card)) ; |
473 | writel(0x00000002, card->membase + DR0); | |
474 | writel(NS_CMD_WRITE_UTILITY | 0x00000205, card->membase + CMD); | |
1da177e4 | 475 | #endif /* PHY_LOOPBACK */ |
098fde11 C |
476 | break; |
477 | default: | |
478 | printk("nicstar%d: unknown PHY type (0x%08X).\n", i, data); | |
479 | error = 8; | |
480 | ns_init_card_error(card, error); | |
481 | return error; | |
482 | } | |
483 | writel(0x00000000, card->membase + GP); | |
484 | ||
485 | /* Determine SRAM size */ | |
486 | data = 0x76543210; | |
487 | ns_write_sram(card, 0x1C003, &data, 1); | |
488 | data = 0x89ABCDEF; | |
489 | ns_write_sram(card, 0x14003, &data, 1); | |
490 | if (ns_read_sram(card, 0x14003) == 0x89ABCDEF && | |
491 | ns_read_sram(card, 0x1C003) == 0x76543210) | |
492 | card->sram_size = 128; | |
493 | else | |
494 | card->sram_size = 32; | |
495 | PRINTK("nicstar%d: %dK x 32bit SRAM size.\n", i, card->sram_size); | |
496 | ||
497 | card->rct_size = NS_MAX_RCTSIZE; | |
1da177e4 LT |
498 | |
499 | #if (NS_MAX_RCTSIZE == 4096) | |
098fde11 C |
500 | if (card->sram_size == 128) |
501 | printk | |
502 | ("nicstar%d: limiting maximum VCI. See NS_MAX_RCTSIZE in nicstar.h\n", | |
503 | i); | |
1da177e4 | 504 | #elif (NS_MAX_RCTSIZE == 16384) |
098fde11 C |
505 | if (card->sram_size == 32) { |
506 | printk | |
507 | ("nicstar%d: wasting memory. See NS_MAX_RCTSIZE in nicstar.h\n", | |
508 | i); | |
509 | card->rct_size = 4096; | |
510 | } | |
1da177e4 LT |
511 | #else |
512 | #error NS_MAX_RCTSIZE must be either 4096 or 16384 in nicstar.c | |
513 | #endif | |
514 | ||
098fde11 C |
515 | card->vpibits = NS_VPIBITS; |
516 | if (card->rct_size == 4096) | |
517 | card->vcibits = 12 - NS_VPIBITS; | |
518 | else /* card->rct_size == 16384 */ | |
519 | card->vcibits = 14 - NS_VPIBITS; | |
520 | ||
521 | /* Initialize the nicstar eeprom/eprom stuff, for the MAC addr */ | |
522 | if (mac[i] == NULL) | |
523 | nicstar_init_eprom(card->membase); | |
524 | ||
525 | /* Set the VPI/VCI MSb mask to zero so we can receive OAM cells */ | |
526 | writel(0x00000000, card->membase + VPM); | |
527 | ||
528 | /* Initialize TSQ */ | |
ede58ef2 C |
529 | card->tsq.org = dma_alloc_coherent(&card->pcidev->dev, |
530 | NS_TSQSIZE + NS_TSQ_ALIGNMENT, | |
531 | &card->tsq.dma, GFP_KERNEL); | |
098fde11 C |
532 | if (card->tsq.org == NULL) { |
533 | printk("nicstar%d: can't allocate TSQ.\n", i); | |
534 | error = 10; | |
535 | ns_init_card_error(card, error); | |
536 | return error; | |
537 | } | |
864a3ff6 | 538 | card->tsq.base = PTR_ALIGN(card->tsq.org, NS_TSQ_ALIGNMENT); |
098fde11 C |
539 | card->tsq.next = card->tsq.base; |
540 | card->tsq.last = card->tsq.base + (NS_TSQ_NUM_ENTRIES - 1); | |
541 | for (j = 0; j < NS_TSQ_NUM_ENTRIES; j++) | |
542 | ns_tsi_init(card->tsq.base + j); | |
543 | writel(0x00000000, card->membase + TSQH); | |
864a3ff6 C |
544 | writel(ALIGN(card->tsq.dma, NS_TSQ_ALIGNMENT), card->membase + TSQB); |
545 | PRINTK("nicstar%d: TSQ base at 0x%p.\n", i, card->tsq.base); | |
098fde11 C |
546 | |
547 | /* Initialize RSQ */ | |
ede58ef2 C |
548 | card->rsq.org = dma_alloc_coherent(&card->pcidev->dev, |
549 | NS_RSQSIZE + NS_RSQ_ALIGNMENT, | |
550 | &card->rsq.dma, GFP_KERNEL); | |
098fde11 C |
551 | if (card->rsq.org == NULL) { |
552 | printk("nicstar%d: can't allocate RSQ.\n", i); | |
553 | error = 11; | |
554 | ns_init_card_error(card, error); | |
555 | return error; | |
556 | } | |
864a3ff6 | 557 | card->rsq.base = PTR_ALIGN(card->rsq.org, NS_RSQ_ALIGNMENT); |
098fde11 C |
558 | card->rsq.next = card->rsq.base; |
559 | card->rsq.last = card->rsq.base + (NS_RSQ_NUM_ENTRIES - 1); | |
560 | for (j = 0; j < NS_RSQ_NUM_ENTRIES; j++) | |
561 | ns_rsqe_init(card->rsq.base + j); | |
562 | writel(0x00000000, card->membase + RSQH); | |
864a3ff6 C |
563 | writel(ALIGN(card->rsq.dma, NS_RSQ_ALIGNMENT), card->membase + RSQB); |
564 | PRINTK("nicstar%d: RSQ base at 0x%p.\n", i, card->rsq.base); | |
098fde11 C |
565 | |
566 | /* Initialize SCQ0, the only VBR SCQ used */ | |
567 | card->scq1 = NULL; | |
568 | card->scq2 = NULL; | |
864a3ff6 | 569 | card->scq0 = get_scq(card, VBR_SCQSIZE, NS_VRSCD0); |
098fde11 C |
570 | if (card->scq0 == NULL) { |
571 | printk("nicstar%d: can't get SCQ0.\n", i); | |
572 | error = 12; | |
573 | ns_init_card_error(card, error); | |
574 | return error; | |
575 | } | |
864a3ff6 | 576 | u32d[0] = scq_virt_to_bus(card->scq0, card->scq0->base); |
098fde11 C |
577 | u32d[1] = (u32) 0x00000000; |
578 | u32d[2] = (u32) 0xffffffff; | |
579 | u32d[3] = (u32) 0x00000000; | |
580 | ns_write_sram(card, NS_VRSCD0, u32d, 4); | |
581 | ns_write_sram(card, NS_VRSCD1, u32d, 4); /* These last two won't be used */ | |
582 | ns_write_sram(card, NS_VRSCD2, u32d, 4); /* but are initialized, just in case... */ | |
583 | card->scq0->scd = NS_VRSCD0; | |
864a3ff6 | 584 | PRINTK("nicstar%d: VBR-SCQ0 base at 0x%p.\n", i, card->scq0->base); |
098fde11 C |
585 | |
586 | /* Initialize TSTs */ | |
587 | card->tst_addr = NS_TST0; | |
588 | card->tst_free_entries = NS_TST_NUM_ENTRIES; | |
589 | data = NS_TST_OPCODE_VARIABLE; | |
590 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) | |
591 | ns_write_sram(card, NS_TST0 + j, &data, 1); | |
592 | data = ns_tste_make(NS_TST_OPCODE_END, NS_TST0); | |
593 | ns_write_sram(card, NS_TST0 + NS_TST_NUM_ENTRIES, &data, 1); | |
594 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) | |
595 | ns_write_sram(card, NS_TST1 + j, &data, 1); | |
596 | data = ns_tste_make(NS_TST_OPCODE_END, NS_TST1); | |
597 | ns_write_sram(card, NS_TST1 + NS_TST_NUM_ENTRIES, &data, 1); | |
598 | for (j = 0; j < NS_TST_NUM_ENTRIES; j++) | |
599 | card->tste2vc[j] = NULL; | |
600 | writel(NS_TST0 << 2, card->membase + TSTB); | |
601 | ||
602 | /* Initialize RCT. AAL type is set on opening the VC. */ | |
1da177e4 | 603 | #ifdef RCQ_SUPPORT |
098fde11 | 604 | u32d[0] = NS_RCTE_RAWCELLINTEN; |
1da177e4 | 605 | #else |
098fde11 | 606 | u32d[0] = 0x00000000; |
1da177e4 | 607 | #endif /* RCQ_SUPPORT */ |
098fde11 C |
608 | u32d[1] = 0x00000000; |
609 | u32d[2] = 0x00000000; | |
610 | u32d[3] = 0xFFFFFFFF; | |
611 | for (j = 0; j < card->rct_size; j++) | |
612 | ns_write_sram(card, j * 4, u32d, 4); | |
613 | ||
ee41f07c | 614 | memset(card->vcmap, 0, sizeof(card->vcmap)); |
098fde11 C |
615 | |
616 | for (j = 0; j < NS_FRSCD_NUM; j++) | |
617 | card->scd2vc[j] = NULL; | |
618 | ||
619 | /* Initialize buffer levels */ | |
620 | card->sbnr.min = MIN_SB; | |
621 | card->sbnr.init = NUM_SB; | |
622 | card->sbnr.max = MAX_SB; | |
623 | card->lbnr.min = MIN_LB; | |
624 | card->lbnr.init = NUM_LB; | |
625 | card->lbnr.max = MAX_LB; | |
626 | card->iovnr.min = MIN_IOVB; | |
627 | card->iovnr.init = NUM_IOVB; | |
628 | card->iovnr.max = MAX_IOVB; | |
629 | card->hbnr.min = MIN_HB; | |
630 | card->hbnr.init = NUM_HB; | |
631 | card->hbnr.max = MAX_HB; | |
632 | ||
c664d638 | 633 | card->sm_handle = NULL; |
098fde11 | 634 | card->sm_addr = 0x00000000; |
c664d638 | 635 | card->lg_handle = NULL; |
098fde11 C |
636 | card->lg_addr = 0x00000000; |
637 | ||
638 | card->efbie = 1; /* To prevent push_rxbufs from enabling the interrupt */ | |
639 | ||
864a3ff6 C |
640 | idr_init(&card->idr); |
641 | ||
098fde11 C |
642 | /* Pre-allocate some huge buffers */ |
643 | skb_queue_head_init(&card->hbpool.queue); | |
644 | card->hbpool.count = 0; | |
645 | for (j = 0; j < NUM_HB; j++) { | |
646 | struct sk_buff *hb; | |
647 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); | |
648 | if (hb == NULL) { | |
649 | printk | |
650 | ("nicstar%d: can't allocate %dth of %d huge buffers.\n", | |
651 | i, j, NUM_HB); | |
652 | error = 13; | |
653 | ns_init_card_error(card, error); | |
654 | return error; | |
655 | } | |
864a3ff6 | 656 | NS_PRV_BUFTYPE(hb) = BUF_NONE; |
098fde11 C |
657 | skb_queue_tail(&card->hbpool.queue, hb); |
658 | card->hbpool.count++; | |
659 | } | |
660 | ||
661 | /* Allocate large buffers */ | |
662 | skb_queue_head_init(&card->lbpool.queue); | |
663 | card->lbpool.count = 0; /* Not used */ | |
664 | for (j = 0; j < NUM_LB; j++) { | |
665 | struct sk_buff *lb; | |
666 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); | |
667 | if (lb == NULL) { | |
668 | printk | |
669 | ("nicstar%d: can't allocate %dth of %d large buffers.\n", | |
670 | i, j, NUM_LB); | |
671 | error = 14; | |
672 | ns_init_card_error(card, error); | |
673 | return error; | |
674 | } | |
864a3ff6 | 675 | NS_PRV_BUFTYPE(lb) = BUF_LG; |
098fde11 C |
676 | skb_queue_tail(&card->lbpool.queue, lb); |
677 | skb_reserve(lb, NS_SMBUFSIZE); | |
678 | push_rxbufs(card, lb); | |
679 | /* Due to the implementation of push_rxbufs() this is 1, not 0 */ | |
680 | if (j == 1) { | |
681 | card->rcbuf = lb; | |
864a3ff6 C |
682 | card->rawcell = (struct ns_rcqe *) lb->data; |
683 | card->rawch = NS_PRV_DMA(lb); | |
098fde11 C |
684 | } |
685 | } | |
686 | /* Test for strange behaviour which leads to crashes */ | |
687 | if ((bcount = | |
688 | ns_stat_lfbqc_get(readl(card->membase + STAT))) < card->lbnr.min) { | |
689 | printk | |
690 | ("nicstar%d: Strange... Just allocated %d large buffers and lfbqc = %d.\n", | |
691 | i, j, bcount); | |
692 | error = 14; | |
693 | ns_init_card_error(card, error); | |
694 | return error; | |
695 | } | |
696 | ||
697 | /* Allocate small buffers */ | |
698 | skb_queue_head_init(&card->sbpool.queue); | |
699 | card->sbpool.count = 0; /* Not used */ | |
700 | for (j = 0; j < NUM_SB; j++) { | |
701 | struct sk_buff *sb; | |
702 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); | |
703 | if (sb == NULL) { | |
704 | printk | |
705 | ("nicstar%d: can't allocate %dth of %d small buffers.\n", | |
706 | i, j, NUM_SB); | |
707 | error = 15; | |
708 | ns_init_card_error(card, error); | |
709 | return error; | |
710 | } | |
864a3ff6 | 711 | NS_PRV_BUFTYPE(sb) = BUF_SM; |
098fde11 C |
712 | skb_queue_tail(&card->sbpool.queue, sb); |
713 | skb_reserve(sb, NS_AAL0_HEADER); | |
714 | push_rxbufs(card, sb); | |
715 | } | |
716 | /* Test for strange behaviour which leads to crashes */ | |
717 | if ((bcount = | |
718 | ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min) { | |
719 | printk | |
720 | ("nicstar%d: Strange... Just allocated %d small buffers and sfbqc = %d.\n", | |
721 | i, j, bcount); | |
722 | error = 15; | |
723 | ns_init_card_error(card, error); | |
724 | return error; | |
725 | } | |
726 | ||
727 | /* Allocate iovec buffers */ | |
728 | skb_queue_head_init(&card->iovpool.queue); | |
729 | card->iovpool.count = 0; | |
730 | for (j = 0; j < NUM_IOVB; j++) { | |
731 | struct sk_buff *iovb; | |
732 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); | |
733 | if (iovb == NULL) { | |
734 | printk | |
735 | ("nicstar%d: can't allocate %dth of %d iovec buffers.\n", | |
736 | i, j, NUM_IOVB); | |
737 | error = 16; | |
738 | ns_init_card_error(card, error); | |
739 | return error; | |
740 | } | |
864a3ff6 | 741 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
742 | skb_queue_tail(&card->iovpool.queue, iovb); |
743 | card->iovpool.count++; | |
744 | } | |
745 | ||
746 | /* Configure NICStAR */ | |
747 | if (card->rct_size == 4096) | |
748 | ns_cfg_rctsize = NS_CFG_RCTSIZE_4096_ENTRIES; | |
749 | else /* (card->rct_size == 16384) */ | |
750 | ns_cfg_rctsize = NS_CFG_RCTSIZE_16384_ENTRIES; | |
751 | ||
752 | card->efbie = 1; | |
753 | ||
754 | card->intcnt = 0; | |
755 | if (request_irq | |
06df277a | 756 | (pcidev->irq, &ns_irq_handler, IRQF_SHARED, "nicstar", card) != 0) { |
098fde11 C |
757 | printk("nicstar%d: can't allocate IRQ %d.\n", i, pcidev->irq); |
758 | error = 9; | |
759 | ns_init_card_error(card, error); | |
760 | return error; | |
761 | } | |
762 | ||
763 | /* Register device */ | |
d9ca676b DW |
764 | card->atmdev = atm_dev_register("nicstar", &card->pcidev->dev, &atm_ops, |
765 | -1, NULL); | |
098fde11 C |
766 | if (card->atmdev == NULL) { |
767 | printk("nicstar%d: can't register device.\n", i); | |
768 | error = 17; | |
769 | ns_init_card_error(card, error); | |
770 | return error; | |
771 | } | |
772 | ||
d2bb3905 | 773 | if (mac[i] == NULL || !mac_pton(mac[i], card->atmdev->esi)) { |
098fde11 C |
774 | nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET, |
775 | card->atmdev->esi, 6); | |
4c55a462 | 776 | if (ether_addr_equal(card->atmdev->esi, "\x00\x00\x00\x00\x00\x00")) { |
098fde11 C |
777 | nicstar_read_eprom(card->membase, |
778 | NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT, | |
779 | card->atmdev->esi, 6); | |
780 | } | |
781 | } | |
782 | ||
783 | printk("nicstar%d: MAC address %pM\n", i, card->atmdev->esi); | |
784 | ||
785 | card->atmdev->dev_data = card; | |
786 | card->atmdev->ci_range.vpi_bits = card->vpibits; | |
787 | card->atmdev->ci_range.vci_bits = card->vcibits; | |
788 | card->atmdev->link_rate = card->max_pcr; | |
789 | card->atmdev->phy = NULL; | |
1da177e4 LT |
790 | |
791 | #ifdef CONFIG_ATM_NICSTAR_USE_SUNI | |
098fde11 C |
792 | if (card->max_pcr == ATM_OC3_PCR) |
793 | suni_init(card->atmdev); | |
1da177e4 LT |
794 | #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ |
795 | ||
796 | #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 | |
098fde11 C |
797 | if (card->max_pcr == ATM_25_PCR) |
798 | idt77105_init(card->atmdev); | |
1da177e4 LT |
799 | #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ |
800 | ||
098fde11 C |
801 | if (card->atmdev->phy && card->atmdev->phy->start) |
802 | card->atmdev->phy->start(card->atmdev); | |
1da177e4 | 803 | |
098fde11 C |
804 | 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 */ |
805 | NS_CFG_RSQAFIE | NS_CFG_TXEN | NS_CFG_TXIE | NS_CFG_TSQFIE_OPT | /* Only enabled if ENABLE_TSQFIE */ | |
806 | NS_CFG_PHYIE, card->membase + CFG); | |
1da177e4 | 807 | |
098fde11 | 808 | num_cards++; |
1da177e4 | 809 | |
098fde11 | 810 | return error; |
1da177e4 LT |
811 | } |
812 | ||
6c44512d | 813 | static void ns_init_card_error(ns_dev *card, int error) |
098fde11 C |
814 | { |
815 | if (error >= 17) { | |
816 | writel(0x00000000, card->membase + CFG); | |
817 | } | |
818 | if (error >= 16) { | |
819 | struct sk_buff *iovb; | |
820 | while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) | |
821 | dev_kfree_skb_any(iovb); | |
822 | } | |
823 | if (error >= 15) { | |
824 | struct sk_buff *sb; | |
825 | while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) | |
826 | dev_kfree_skb_any(sb); | |
864a3ff6 | 827 | free_scq(card, card->scq0, NULL); |
098fde11 C |
828 | } |
829 | if (error >= 14) { | |
830 | struct sk_buff *lb; | |
831 | while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) | |
832 | dev_kfree_skb_any(lb); | |
833 | } | |
834 | if (error >= 13) { | |
835 | struct sk_buff *hb; | |
836 | while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) | |
837 | dev_kfree_skb_any(hb); | |
838 | } | |
839 | if (error >= 12) { | |
840 | kfree(card->rsq.org); | |
841 | } | |
842 | if (error >= 11) { | |
843 | kfree(card->tsq.org); | |
844 | } | |
845 | if (error >= 10) { | |
846 | free_irq(card->pcidev->irq, card); | |
847 | } | |
848 | if (error >= 4) { | |
849 | iounmap(card->membase); | |
850 | } | |
851 | if (error >= 3) { | |
852 | pci_disable_device(card->pcidev); | |
853 | kfree(card); | |
854 | } | |
855 | } | |
1da177e4 | 856 | |
864a3ff6 | 857 | static scq_info *get_scq(ns_dev *card, int size, u32 scd) |
1da177e4 | 858 | { |
098fde11 C |
859 | scq_info *scq; |
860 | int i; | |
861 | ||
862 | if (size != VBR_SCQSIZE && size != CBR_SCQSIZE) | |
863 | return NULL; | |
864 | ||
24310fd5 | 865 | scq = kmalloc(sizeof(*scq), GFP_KERNEL); |
864a3ff6 | 866 | if (!scq) |
098fde11 | 867 | return NULL; |
ede58ef2 C |
868 | scq->org = dma_alloc_coherent(&card->pcidev->dev, |
869 | 2 * size, &scq->dma, GFP_KERNEL); | |
864a3ff6 | 870 | if (!scq->org) { |
098fde11 C |
871 | kfree(scq); |
872 | return NULL; | |
873 | } | |
78706121 ME |
874 | scq->skb = kmalloc_array(size / NS_SCQE_SIZE, |
875 | sizeof(*scq->skb), | |
876 | GFP_KERNEL); | |
864a3ff6 | 877 | if (!scq->skb) { |
eab81466 CJ |
878 | dma_free_coherent(&card->pcidev->dev, |
879 | 2 * size, scq->org, scq->dma); | |
098fde11 C |
880 | kfree(scq); |
881 | return NULL; | |
882 | } | |
883 | scq->num_entries = size / NS_SCQE_SIZE; | |
864a3ff6 | 884 | scq->base = PTR_ALIGN(scq->org, size); |
098fde11 C |
885 | scq->next = scq->base; |
886 | scq->last = scq->base + (scq->num_entries - 1); | |
887 | scq->tail = scq->last; | |
888 | scq->scd = scd; | |
889 | scq->num_entries = size / NS_SCQE_SIZE; | |
890 | scq->tbd_count = 0; | |
891 | init_waitqueue_head(&scq->scqfull_waitq); | |
892 | scq->full = 0; | |
893 | spin_lock_init(&scq->lock); | |
894 | ||
895 | for (i = 0; i < scq->num_entries; i++) | |
896 | scq->skb[i] = NULL; | |
897 | ||
898 | return scq; | |
1da177e4 LT |
899 | } |
900 | ||
1da177e4 | 901 | /* For variable rate SCQ vcc must be NULL */ |
864a3ff6 | 902 | static void free_scq(ns_dev *card, scq_info *scq, struct atm_vcc *vcc) |
1da177e4 | 903 | { |
098fde11 C |
904 | int i; |
905 | ||
906 | if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) | |
907 | for (i = 0; i < scq->num_entries; i++) { | |
908 | if (scq->skb[i] != NULL) { | |
909 | vcc = ATM_SKB(scq->skb[i])->vcc; | |
910 | if (vcc->pop != NULL) | |
911 | vcc->pop(vcc, scq->skb[i]); | |
912 | else | |
913 | dev_kfree_skb_any(scq->skb[i]); | |
914 | } | |
915 | } else { /* vcc must be != NULL */ | |
916 | ||
917 | if (vcc == NULL) { | |
918 | printk | |
919 | ("nicstar: free_scq() called with vcc == NULL for fixed rate scq."); | |
920 | for (i = 0; i < scq->num_entries; i++) | |
921 | dev_kfree_skb_any(scq->skb[i]); | |
922 | } else | |
923 | for (i = 0; i < scq->num_entries; i++) { | |
924 | if (scq->skb[i] != NULL) { | |
925 | if (vcc->pop != NULL) | |
926 | vcc->pop(vcc, scq->skb[i]); | |
927 | else | |
928 | dev_kfree_skb_any(scq->skb[i]); | |
929 | } | |
930 | } | |
931 | } | |
932 | kfree(scq->skb); | |
ede58ef2 C |
933 | dma_free_coherent(&card->pcidev->dev, |
934 | 2 * (scq->num_entries == VBR_SCQ_NUM_ENTRIES ? | |
935 | VBR_SCQSIZE : CBR_SCQSIZE), | |
936 | scq->org, scq->dma); | |
098fde11 | 937 | kfree(scq); |
1da177e4 LT |
938 | } |
939 | ||
1da177e4 LT |
940 | /* The handles passed must be pointers to the sk_buff containing the small |
941 | or large buffer(s) cast to u32. */ | |
098fde11 | 942 | static void push_rxbufs(ns_dev * card, struct sk_buff *skb) |
1da177e4 | 943 | { |
864a3ff6 | 944 | struct sk_buff *handle1, *handle2; |
b051f6ed | 945 | int id1, id2; |
864a3ff6 | 946 | u32 addr1, addr2; |
098fde11 C |
947 | u32 stat; |
948 | unsigned long flags; | |
949 | ||
950 | /* *BARF* */ | |
864a3ff6 C |
951 | handle2 = NULL; |
952 | addr2 = 0; | |
953 | handle1 = skb; | |
ede58ef2 | 954 | addr1 = dma_map_single(&card->pcidev->dev, |
864a3ff6 C |
955 | skb->data, |
956 | (NS_PRV_BUFTYPE(skb) == BUF_SM | |
957 | ? NS_SMSKBSIZE : NS_LGSKBSIZE), | |
ede58ef2 | 958 | DMA_TO_DEVICE); |
864a3ff6 | 959 | NS_PRV_DMA(skb) = addr1; /* save so we can unmap later */ |
1da177e4 LT |
960 | |
961 | #ifdef GENERAL_DEBUG | |
098fde11 C |
962 | if (!addr1) |
963 | printk("nicstar%d: push_rxbufs called with addr1 = 0.\n", | |
964 | card->index); | |
1da177e4 LT |
965 | #endif /* GENERAL_DEBUG */ |
966 | ||
098fde11 C |
967 | stat = readl(card->membase + STAT); |
968 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
969 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
864a3ff6 | 970 | if (NS_PRV_BUFTYPE(skb) == BUF_SM) { |
098fde11 C |
971 | if (!addr2) { |
972 | if (card->sm_addr) { | |
973 | addr2 = card->sm_addr; | |
974 | handle2 = card->sm_handle; | |
975 | card->sm_addr = 0x00000000; | |
c664d638 | 976 | card->sm_handle = NULL; |
098fde11 C |
977 | } else { /* (!sm_addr) */ |
978 | ||
979 | card->sm_addr = addr1; | |
980 | card->sm_handle = handle1; | |
981 | } | |
982 | } | |
983 | } else { /* buf_type == BUF_LG */ | |
984 | ||
985 | if (!addr2) { | |
986 | if (card->lg_addr) { | |
987 | addr2 = card->lg_addr; | |
988 | handle2 = card->lg_handle; | |
989 | card->lg_addr = 0x00000000; | |
c664d638 | 990 | card->lg_handle = NULL; |
098fde11 C |
991 | } else { /* (!lg_addr) */ |
992 | ||
993 | card->lg_addr = addr1; | |
994 | card->lg_handle = handle1; | |
995 | } | |
996 | } | |
997 | } | |
998 | ||
999 | if (addr2) { | |
864a3ff6 | 1000 | if (NS_PRV_BUFTYPE(skb) == BUF_SM) { |
098fde11 | 1001 | if (card->sbfqc >= card->sbnr.max) { |
864a3ff6 C |
1002 | skb_unlink(handle1, &card->sbpool.queue); |
1003 | dev_kfree_skb_any(handle1); | |
1004 | skb_unlink(handle2, &card->sbpool.queue); | |
1005 | dev_kfree_skb_any(handle2); | |
098fde11 C |
1006 | return; |
1007 | } else | |
1008 | card->sbfqc += 2; | |
1009 | } else { /* (buf_type == BUF_LG) */ | |
1010 | ||
1011 | if (card->lbfqc >= card->lbnr.max) { | |
864a3ff6 C |
1012 | skb_unlink(handle1, &card->lbpool.queue); |
1013 | dev_kfree_skb_any(handle1); | |
1014 | skb_unlink(handle2, &card->lbpool.queue); | |
1015 | dev_kfree_skb_any(handle2); | |
098fde11 C |
1016 | return; |
1017 | } else | |
1018 | card->lbfqc += 2; | |
1019 | } | |
1020 | ||
b051f6ed TH |
1021 | id1 = idr_alloc(&card->idr, handle1, 0, 0, GFP_ATOMIC); |
1022 | if (id1 < 0) | |
1023 | goto out; | |
098fde11 | 1024 | |
b051f6ed TH |
1025 | id2 = idr_alloc(&card->idr, handle2, 0, 0, GFP_ATOMIC); |
1026 | if (id2 < 0) | |
864a3ff6 C |
1027 | goto out; |
1028 | ||
1029 | spin_lock_irqsave(&card->res_lock, flags); | |
098fde11 C |
1030 | while (CMD_BUSY(card)) ; |
1031 | writel(addr2, card->membase + DR3); | |
864a3ff6 | 1032 | writel(id2, card->membase + DR2); |
098fde11 | 1033 | writel(addr1, card->membase + DR1); |
864a3ff6 C |
1034 | writel(id1, card->membase + DR0); |
1035 | writel(NS_CMD_WRITE_FREEBUFQ | NS_PRV_BUFTYPE(skb), | |
098fde11 | 1036 | card->membase + CMD); |
098fde11 C |
1037 | spin_unlock_irqrestore(&card->res_lock, flags); |
1038 | ||
1039 | XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n", | |
1040 | card->index, | |
864a3ff6 C |
1041 | (NS_PRV_BUFTYPE(skb) == BUF_SM ? "small" : "large"), |
1042 | addr1, addr2); | |
098fde11 C |
1043 | } |
1044 | ||
1045 | if (!card->efbie && card->sbfqc >= card->sbnr.min && | |
1046 | card->lbfqc >= card->lbnr.min) { | |
1047 | card->efbie = 1; | |
1048 | writel((readl(card->membase + CFG) | NS_CFG_EFBIE), | |
1049 | card->membase + CFG); | |
1050 | } | |
1051 | ||
864a3ff6 | 1052 | out: |
098fde11 | 1053 | return; |
1da177e4 LT |
1054 | } |
1055 | ||
7d12e780 | 1056 | static irqreturn_t ns_irq_handler(int irq, void *dev_id) |
1da177e4 | 1057 | { |
098fde11 C |
1058 | u32 stat_r; |
1059 | ns_dev *card; | |
1060 | struct atm_dev *dev; | |
1061 | unsigned long flags; | |
1062 | ||
1063 | card = (ns_dev *) dev_id; | |
1064 | dev = card->atmdev; | |
1065 | card->intcnt++; | |
1066 | ||
1067 | PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index); | |
1068 | ||
1069 | spin_lock_irqsave(&card->int_lock, flags); | |
1070 | ||
1071 | stat_r = readl(card->membase + STAT); | |
1072 | ||
1073 | /* Transmit Status Indicator has been written to T. S. Queue */ | |
1074 | if (stat_r & NS_STAT_TSIF) { | |
1075 | TXPRINTK("nicstar%d: TSI interrupt\n", card->index); | |
1076 | process_tsq(card); | |
1077 | writel(NS_STAT_TSIF, card->membase + STAT); | |
1078 | } | |
1079 | ||
1080 | /* Incomplete CS-PDU has been transmitted */ | |
1081 | if (stat_r & NS_STAT_TXICP) { | |
1082 | writel(NS_STAT_TXICP, card->membase + STAT); | |
1083 | TXPRINTK("nicstar%d: Incomplete CS-PDU transmitted.\n", | |
1084 | card->index); | |
1085 | } | |
1086 | ||
1087 | /* Transmit Status Queue 7/8 full */ | |
1088 | if (stat_r & NS_STAT_TSQF) { | |
1089 | writel(NS_STAT_TSQF, card->membase + STAT); | |
1090 | PRINTK("nicstar%d: TSQ full.\n", card->index); | |
1091 | process_tsq(card); | |
1092 | } | |
1093 | ||
1094 | /* Timer overflow */ | |
1095 | if (stat_r & NS_STAT_TMROF) { | |
1096 | writel(NS_STAT_TMROF, card->membase + STAT); | |
1097 | PRINTK("nicstar%d: Timer overflow.\n", card->index); | |
1098 | } | |
1099 | ||
1100 | /* PHY device interrupt signal active */ | |
1101 | if (stat_r & NS_STAT_PHYI) { | |
1102 | writel(NS_STAT_PHYI, card->membase + STAT); | |
1103 | PRINTK("nicstar%d: PHY interrupt.\n", card->index); | |
1104 | if (dev->phy && dev->phy->interrupt) { | |
1105 | dev->phy->interrupt(dev); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /* Small Buffer Queue is full */ | |
1110 | if (stat_r & NS_STAT_SFBQF) { | |
1111 | writel(NS_STAT_SFBQF, card->membase + STAT); | |
1112 | printk("nicstar%d: Small free buffer queue is full.\n", | |
1113 | card->index); | |
1114 | } | |
1115 | ||
1116 | /* Large Buffer Queue is full */ | |
1117 | if (stat_r & NS_STAT_LFBQF) { | |
1118 | writel(NS_STAT_LFBQF, card->membase + STAT); | |
1119 | printk("nicstar%d: Large free buffer queue is full.\n", | |
1120 | card->index); | |
1121 | } | |
1122 | ||
1123 | /* Receive Status Queue is full */ | |
1124 | if (stat_r & NS_STAT_RSQF) { | |
1125 | writel(NS_STAT_RSQF, card->membase + STAT); | |
1126 | printk("nicstar%d: RSQ full.\n", card->index); | |
1127 | process_rsq(card); | |
1128 | } | |
1129 | ||
1130 | /* Complete CS-PDU received */ | |
1131 | if (stat_r & NS_STAT_EOPDU) { | |
1132 | RXPRINTK("nicstar%d: End of CS-PDU received.\n", card->index); | |
1133 | process_rsq(card); | |
1134 | writel(NS_STAT_EOPDU, card->membase + STAT); | |
1135 | } | |
1136 | ||
1137 | /* Raw cell received */ | |
1138 | if (stat_r & NS_STAT_RAWCF) { | |
1139 | writel(NS_STAT_RAWCF, card->membase + STAT); | |
1da177e4 | 1140 | #ifndef RCQ_SUPPORT |
098fde11 C |
1141 | printk("nicstar%d: Raw cell received and no support yet...\n", |
1142 | card->index); | |
1da177e4 | 1143 | #endif /* RCQ_SUPPORT */ |
098fde11 C |
1144 | /* NOTE: the following procedure may keep a raw cell pending until the |
1145 | next interrupt. As this preliminary support is only meant to | |
1146 | avoid buffer leakage, this is not an issue. */ | |
1147 | while (readl(card->membase + RAWCT) != card->rawch) { | |
098fde11 | 1148 | |
864a3ff6 | 1149 | if (ns_rcqe_islast(card->rawcell)) { |
098fde11 C |
1150 | struct sk_buff *oldbuf; |
1151 | ||
1152 | oldbuf = card->rcbuf; | |
864a3ff6 C |
1153 | card->rcbuf = idr_find(&card->idr, |
1154 | ns_rcqe_nextbufhandle(card->rawcell)); | |
1155 | card->rawch = NS_PRV_DMA(card->rcbuf); | |
1156 | card->rawcell = (struct ns_rcqe *) | |
1157 | card->rcbuf->data; | |
098fde11 | 1158 | recycle_rx_buf(card, oldbuf); |
864a3ff6 | 1159 | } else { |
098fde11 | 1160 | card->rawch += NS_RCQE_SIZE; |
864a3ff6 C |
1161 | card->rawcell++; |
1162 | } | |
098fde11 C |
1163 | } |
1164 | } | |
1165 | ||
1166 | /* Small buffer queue is empty */ | |
1167 | if (stat_r & NS_STAT_SFBQE) { | |
1168 | int i; | |
1169 | struct sk_buff *sb; | |
1170 | ||
1171 | writel(NS_STAT_SFBQE, card->membase + STAT); | |
1172 | printk("nicstar%d: Small free buffer queue empty.\n", | |
1173 | card->index); | |
1174 | for (i = 0; i < card->sbnr.min; i++) { | |
1175 | sb = dev_alloc_skb(NS_SMSKBSIZE); | |
1176 | if (sb == NULL) { | |
1177 | writel(readl(card->membase + CFG) & | |
1178 | ~NS_CFG_EFBIE, card->membase + CFG); | |
1179 | card->efbie = 0; | |
1180 | break; | |
1181 | } | |
864a3ff6 | 1182 | NS_PRV_BUFTYPE(sb) = BUF_SM; |
098fde11 C |
1183 | skb_queue_tail(&card->sbpool.queue, sb); |
1184 | skb_reserve(sb, NS_AAL0_HEADER); | |
1185 | push_rxbufs(card, sb); | |
1186 | } | |
1187 | card->sbfqc = i; | |
1188 | process_rsq(card); | |
1189 | } | |
1190 | ||
1191 | /* Large buffer queue empty */ | |
1192 | if (stat_r & NS_STAT_LFBQE) { | |
1193 | int i; | |
1194 | struct sk_buff *lb; | |
1195 | ||
1196 | writel(NS_STAT_LFBQE, card->membase + STAT); | |
1197 | printk("nicstar%d: Large free buffer queue empty.\n", | |
1198 | card->index); | |
1199 | for (i = 0; i < card->lbnr.min; i++) { | |
1200 | lb = dev_alloc_skb(NS_LGSKBSIZE); | |
1201 | if (lb == NULL) { | |
1202 | writel(readl(card->membase + CFG) & | |
1203 | ~NS_CFG_EFBIE, card->membase + CFG); | |
1204 | card->efbie = 0; | |
1205 | break; | |
1206 | } | |
864a3ff6 | 1207 | NS_PRV_BUFTYPE(lb) = BUF_LG; |
098fde11 C |
1208 | skb_queue_tail(&card->lbpool.queue, lb); |
1209 | skb_reserve(lb, NS_SMBUFSIZE); | |
1210 | push_rxbufs(card, lb); | |
1211 | } | |
1212 | card->lbfqc = i; | |
1213 | process_rsq(card); | |
1214 | } | |
1215 | ||
1216 | /* Receive Status Queue is 7/8 full */ | |
1217 | if (stat_r & NS_STAT_RSQAF) { | |
1218 | writel(NS_STAT_RSQAF, card->membase + STAT); | |
1219 | RXPRINTK("nicstar%d: RSQ almost full.\n", card->index); | |
1220 | process_rsq(card); | |
1221 | } | |
1222 | ||
1223 | spin_unlock_irqrestore(&card->int_lock, flags); | |
1224 | PRINTK("nicstar%d: end of interrupt service\n", card->index); | |
1225 | return IRQ_HANDLED; | |
1da177e4 LT |
1226 | } |
1227 | ||
1da177e4 LT |
1228 | static int ns_open(struct atm_vcc *vcc) |
1229 | { | |
098fde11 C |
1230 | ns_dev *card; |
1231 | vc_map *vc; | |
1232 | unsigned long tmpl, modl; | |
1233 | int tcr, tcra; /* target cell rate, and absolute value */ | |
1234 | int n = 0; /* Number of entries in the TST. Initialized to remove | |
1235 | the compiler warning. */ | |
1236 | u32 u32d[4]; | |
1237 | int frscdi = 0; /* Index of the SCD. Initialized to remove the compiler | |
1238 | warning. How I wish compilers were clever enough to | |
1239 | tell which variables can truly be used | |
1240 | uninitialized... */ | |
1241 | int inuse; /* tx or rx vc already in use by another vcc */ | |
1242 | short vpi = vcc->vpi; | |
1243 | int vci = vcc->vci; | |
1244 | ||
1245 | card = (ns_dev *) vcc->dev->dev_data; | |
1246 | PRINTK("nicstar%d: opening vpi.vci %d.%d \n", card->index, (int)vpi, | |
1247 | vci); | |
1248 | if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { | |
1249 | PRINTK("nicstar%d: unsupported AAL.\n", card->index); | |
1250 | return -EINVAL; | |
1251 | } | |
1252 | ||
1253 | vc = &(card->vcmap[vpi << card->vcibits | vci]); | |
1254 | vcc->dev_data = vc; | |
1255 | ||
1256 | inuse = 0; | |
1257 | if (vcc->qos.txtp.traffic_class != ATM_NONE && vc->tx) | |
1258 | inuse = 1; | |
1259 | if (vcc->qos.rxtp.traffic_class != ATM_NONE && vc->rx) | |
1260 | inuse += 2; | |
1261 | if (inuse) { | |
1262 | printk("nicstar%d: %s vci already in use.\n", card->index, | |
1263 | inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx"); | |
1264 | return -EINVAL; | |
1265 | } | |
1266 | ||
1267 | set_bit(ATM_VF_ADDR, &vcc->flags); | |
1268 | ||
1269 | /* NOTE: You are not allowed to modify an open connection's QOS. To change | |
1270 | that, remove the ATM_VF_PARTIAL flag checking. There may be other changes | |
1271 | needed to do that. */ | |
1272 | if (!test_bit(ATM_VF_PARTIAL, &vcc->flags)) { | |
1273 | scq_info *scq; | |
1274 | ||
1275 | set_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1276 | if (vcc->qos.txtp.traffic_class == ATM_CBR) { | |
1277 | /* Check requested cell rate and availability of SCD */ | |
1278 | if (vcc->qos.txtp.max_pcr == 0 && vcc->qos.txtp.pcr == 0 | |
1279 | && vcc->qos.txtp.min_pcr == 0) { | |
1280 | PRINTK | |
1281 | ("nicstar%d: trying to open a CBR vc with cell rate = 0 \n", | |
1282 | card->index); | |
1283 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1284 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1285 | return -EINVAL; | |
1286 | } | |
1287 | ||
1288 | tcr = atm_pcr_goal(&(vcc->qos.txtp)); | |
1289 | tcra = tcr >= 0 ? tcr : -tcr; | |
1290 | ||
1291 | PRINTK("nicstar%d: target cell rate = %d.\n", | |
1292 | card->index, vcc->qos.txtp.max_pcr); | |
1293 | ||
1294 | tmpl = | |
1295 | (unsigned long)tcra *(unsigned long) | |
1296 | NS_TST_NUM_ENTRIES; | |
1297 | modl = tmpl % card->max_pcr; | |
1298 | ||
1299 | n = (int)(tmpl / card->max_pcr); | |
1300 | if (tcr > 0) { | |
1301 | if (modl > 0) | |
1302 | n++; | |
1303 | } else if (tcr == 0) { | |
1304 | if ((n = | |
1305 | (card->tst_free_entries - | |
1306 | NS_TST_RESERVED)) <= 0) { | |
1307 | PRINTK | |
1308 | ("nicstar%d: no CBR bandwidth free.\n", | |
1309 | card->index); | |
1310 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1311 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1312 | return -EINVAL; | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | if (n == 0) { | |
1317 | printk | |
1318 | ("nicstar%d: selected bandwidth < granularity.\n", | |
1319 | card->index); | |
1320 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1321 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1322 | return -EINVAL; | |
1323 | } | |
1324 | ||
1325 | if (n > (card->tst_free_entries - NS_TST_RESERVED)) { | |
1326 | PRINTK | |
1327 | ("nicstar%d: not enough free CBR bandwidth.\n", | |
1328 | card->index); | |
1329 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1330 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1331 | return -EINVAL; | |
1332 | } else | |
1333 | card->tst_free_entries -= n; | |
1334 | ||
1335 | XPRINTK("nicstar%d: writing %d tst entries.\n", | |
1336 | card->index, n); | |
1337 | for (frscdi = 0; frscdi < NS_FRSCD_NUM; frscdi++) { | |
1338 | if (card->scd2vc[frscdi] == NULL) { | |
1339 | card->scd2vc[frscdi] = vc; | |
1340 | break; | |
1341 | } | |
1342 | } | |
1343 | if (frscdi == NS_FRSCD_NUM) { | |
1344 | PRINTK | |
1345 | ("nicstar%d: no SCD available for CBR channel.\n", | |
1346 | card->index); | |
1347 | card->tst_free_entries += n; | |
1348 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1349 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1350 | return -EBUSY; | |
1351 | } | |
1352 | ||
1353 | vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE; | |
1354 | ||
864a3ff6 | 1355 | scq = get_scq(card, CBR_SCQSIZE, vc->cbr_scd); |
098fde11 C |
1356 | if (scq == NULL) { |
1357 | PRINTK("nicstar%d: can't get fixed rate SCQ.\n", | |
1358 | card->index); | |
1359 | card->scd2vc[frscdi] = NULL; | |
1360 | card->tst_free_entries += n; | |
1361 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1362 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1363 | return -ENOMEM; | |
1364 | } | |
1365 | vc->scq = scq; | |
864a3ff6 | 1366 | u32d[0] = scq_virt_to_bus(scq, scq->base); |
098fde11 C |
1367 | u32d[1] = (u32) 0x00000000; |
1368 | u32d[2] = (u32) 0xffffffff; | |
1369 | u32d[3] = (u32) 0x00000000; | |
1370 | ns_write_sram(card, vc->cbr_scd, u32d, 4); | |
1371 | ||
1372 | fill_tst(card, n, vc); | |
1373 | } else if (vcc->qos.txtp.traffic_class == ATM_UBR) { | |
1374 | vc->cbr_scd = 0x00000000; | |
1375 | vc->scq = card->scq0; | |
1376 | } | |
1377 | ||
1378 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
1379 | vc->tx = 1; | |
1380 | vc->tx_vcc = vcc; | |
1381 | vc->tbd_count = 0; | |
1382 | } | |
1383 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) { | |
1384 | u32 status; | |
1385 | ||
1386 | vc->rx = 1; | |
1387 | vc->rx_vcc = vcc; | |
1388 | vc->rx_iov = NULL; | |
1389 | ||
1390 | /* Open the connection in hardware */ | |
1391 | if (vcc->qos.aal == ATM_AAL5) | |
1392 | status = NS_RCTE_AAL5 | NS_RCTE_CONNECTOPEN; | |
1393 | else /* vcc->qos.aal == ATM_AAL0 */ | |
1394 | status = NS_RCTE_AAL0 | NS_RCTE_CONNECTOPEN; | |
1da177e4 | 1395 | #ifdef RCQ_SUPPORT |
098fde11 | 1396 | status |= NS_RCTE_RAWCELLINTEN; |
1da177e4 | 1397 | #endif /* RCQ_SUPPORT */ |
098fde11 C |
1398 | ns_write_sram(card, |
1399 | NS_RCT + | |
1400 | (vpi << card->vcibits | vci) * | |
1401 | NS_RCT_ENTRY_SIZE, &status, 1); | |
1402 | } | |
1da177e4 | 1403 | |
098fde11 | 1404 | } |
1da177e4 | 1405 | |
098fde11 C |
1406 | set_bit(ATM_VF_READY, &vcc->flags); |
1407 | return 0; | |
1408 | } | |
1da177e4 LT |
1409 | |
1410 | static void ns_close(struct atm_vcc *vcc) | |
1411 | { | |
098fde11 C |
1412 | vc_map *vc; |
1413 | ns_dev *card; | |
1414 | u32 data; | |
1415 | int i; | |
1416 | ||
1417 | vc = vcc->dev_data; | |
1418 | card = vcc->dev->dev_data; | |
1419 | PRINTK("nicstar%d: closing vpi.vci %d.%d \n", card->index, | |
1420 | (int)vcc->vpi, vcc->vci); | |
1421 | ||
1422 | clear_bit(ATM_VF_READY, &vcc->flags); | |
1423 | ||
1424 | if (vcc->qos.rxtp.traffic_class != ATM_NONE) { | |
1425 | u32 addr; | |
1426 | unsigned long flags; | |
1427 | ||
1428 | addr = | |
1429 | NS_RCT + | |
1430 | (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE; | |
1431 | spin_lock_irqsave(&card->res_lock, flags); | |
1432 | while (CMD_BUSY(card)) ; | |
1433 | writel(NS_CMD_CLOSE_CONNECTION | addr << 2, | |
1434 | card->membase + CMD); | |
1435 | spin_unlock_irqrestore(&card->res_lock, flags); | |
1436 | ||
1437 | vc->rx = 0; | |
1438 | if (vc->rx_iov != NULL) { | |
1439 | struct sk_buff *iovb; | |
1440 | u32 stat; | |
1441 | ||
1442 | stat = readl(card->membase + STAT); | |
1443 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
1444 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
1445 | ||
1446 | PRINTK | |
1447 | ("nicstar%d: closing a VC with pending rx buffers.\n", | |
1448 | card->index); | |
1449 | iovb = vc->rx_iov; | |
1450 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
864a3ff6 C |
1451 | NS_PRV_IOVCNT(iovb)); |
1452 | NS_PRV_IOVCNT(iovb) = 0; | |
098fde11 C |
1453 | spin_lock_irqsave(&card->int_lock, flags); |
1454 | recycle_iov_buf(card, iovb); | |
1455 | spin_unlock_irqrestore(&card->int_lock, flags); | |
1456 | vc->rx_iov = NULL; | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
1461 | vc->tx = 0; | |
1462 | } | |
1463 | ||
1464 | if (vcc->qos.txtp.traffic_class == ATM_CBR) { | |
1465 | unsigned long flags; | |
1466 | ns_scqe *scqep; | |
1467 | scq_info *scq; | |
1468 | ||
1469 | scq = vc->scq; | |
1470 | ||
1471 | for (;;) { | |
1472 | spin_lock_irqsave(&scq->lock, flags); | |
1473 | scqep = scq->next; | |
1474 | if (scqep == scq->base) | |
1475 | scqep = scq->last; | |
1476 | else | |
1477 | scqep--; | |
1478 | if (scqep == scq->tail) { | |
1479 | spin_unlock_irqrestore(&scq->lock, flags); | |
1480 | break; | |
1481 | } | |
1482 | /* If the last entry is not a TSR, place one in the SCQ in order to | |
1483 | be able to completely drain it and then close. */ | |
1484 | if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next) { | |
1485 | ns_scqe tsr; | |
1486 | u32 scdi, scqi; | |
1487 | u32 data; | |
1488 | int index; | |
1489 | ||
1490 | tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); | |
1491 | scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; | |
1492 | scqi = scq->next - scq->base; | |
1493 | tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); | |
1494 | tsr.word_3 = 0x00000000; | |
1495 | tsr.word_4 = 0x00000000; | |
1496 | *scq->next = tsr; | |
1497 | index = (int)scqi; | |
1498 | scq->skb[index] = NULL; | |
1499 | if (scq->next == scq->last) | |
1500 | scq->next = scq->base; | |
1501 | else | |
1502 | scq->next++; | |
864a3ff6 | 1503 | data = scq_virt_to_bus(scq, scq->next); |
098fde11 C |
1504 | ns_write_sram(card, scq->scd, &data, 1); |
1505 | } | |
1506 | spin_unlock_irqrestore(&scq->lock, flags); | |
1507 | schedule(); | |
1508 | } | |
1509 | ||
1510 | /* Free all TST entries */ | |
1511 | data = NS_TST_OPCODE_VARIABLE; | |
1512 | for (i = 0; i < NS_TST_NUM_ENTRIES; i++) { | |
1513 | if (card->tste2vc[i] == vc) { | |
1514 | ns_write_sram(card, card->tst_addr + i, &data, | |
1515 | 1); | |
1516 | card->tste2vc[i] = NULL; | |
1517 | card->tst_free_entries++; | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | card->scd2vc[(vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE] = NULL; | |
864a3ff6 | 1522 | free_scq(card, vc->scq, vcc); |
098fde11 C |
1523 | } |
1524 | ||
1525 | /* remove all references to vcc before deleting it */ | |
1526 | if (vcc->qos.txtp.traffic_class != ATM_NONE) { | |
1527 | unsigned long flags; | |
1528 | scq_info *scq = card->scq0; | |
1529 | ||
1530 | spin_lock_irqsave(&scq->lock, flags); | |
1531 | ||
1532 | for (i = 0; i < scq->num_entries; i++) { | |
1533 | if (scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) { | |
1534 | ATM_SKB(scq->skb[i])->vcc = NULL; | |
1535 | atm_return(vcc, scq->skb[i]->truesize); | |
1536 | PRINTK | |
1537 | ("nicstar: deleted pending vcc mapping\n"); | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | spin_unlock_irqrestore(&scq->lock, flags); | |
1542 | } | |
1543 | ||
1544 | vcc->dev_data = NULL; | |
1545 | clear_bit(ATM_VF_PARTIAL, &vcc->flags); | |
1546 | clear_bit(ATM_VF_ADDR, &vcc->flags); | |
1da177e4 LT |
1547 | |
1548 | #ifdef RX_DEBUG | |
098fde11 C |
1549 | { |
1550 | u32 stat, cfg; | |
1551 | stat = readl(card->membase + STAT); | |
1552 | cfg = readl(card->membase + CFG); | |
1553 | printk("STAT = 0x%08X CFG = 0x%08X \n", stat, cfg); | |
1554 | printk | |
864a3ff6 C |
1555 | ("TSQ: base = 0x%p next = 0x%p last = 0x%p TSQT = 0x%08X \n", |
1556 | card->tsq.base, card->tsq.next, | |
1557 | card->tsq.last, readl(card->membase + TSQT)); | |
098fde11 | 1558 | printk |
864a3ff6 C |
1559 | ("RSQ: base = 0x%p next = 0x%p last = 0x%p RSQT = 0x%08X \n", |
1560 | card->rsq.base, card->rsq.next, | |
1561 | card->rsq.last, readl(card->membase + RSQT)); | |
098fde11 C |
1562 | printk("Empty free buffer queue interrupt %s \n", |
1563 | card->efbie ? "enabled" : "disabled"); | |
1564 | printk("SBCNT = %d count = %d LBCNT = %d count = %d \n", | |
1565 | ns_stat_sfbqc_get(stat), card->sbpool.count, | |
1566 | ns_stat_lfbqc_get(stat), card->lbpool.count); | |
1567 | printk("hbpool.count = %d iovpool.count = %d \n", | |
1568 | card->hbpool.count, card->iovpool.count); | |
1569 | } | |
1da177e4 LT |
1570 | #endif /* RX_DEBUG */ |
1571 | } | |
1572 | ||
098fde11 | 1573 | static void fill_tst(ns_dev * card, int n, vc_map * vc) |
1da177e4 | 1574 | { |
098fde11 C |
1575 | u32 new_tst; |
1576 | unsigned long cl; | |
1577 | int e, r; | |
1578 | u32 data; | |
1579 | ||
1580 | /* It would be very complicated to keep the two TSTs synchronized while | |
1581 | assuring that writes are only made to the inactive TST. So, for now I | |
1582 | will use only one TST. If problems occur, I will change this again */ | |
1583 | ||
1584 | new_tst = card->tst_addr; | |
1585 | ||
1586 | /* Fill procedure */ | |
1587 | ||
1588 | for (e = 0; e < NS_TST_NUM_ENTRIES; e++) { | |
1589 | if (card->tste2vc[e] == NULL) | |
1590 | break; | |
1591 | } | |
1592 | if (e == NS_TST_NUM_ENTRIES) { | |
1593 | printk("nicstar%d: No free TST entries found. \n", card->index); | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | r = n; | |
1598 | cl = NS_TST_NUM_ENTRIES; | |
1599 | data = ns_tste_make(NS_TST_OPCODE_FIXED, vc->cbr_scd); | |
1600 | ||
1601 | while (r > 0) { | |
1602 | if (cl >= NS_TST_NUM_ENTRIES && card->tste2vc[e] == NULL) { | |
1603 | card->tste2vc[e] = vc; | |
1604 | ns_write_sram(card, new_tst + e, &data, 1); | |
1605 | cl -= NS_TST_NUM_ENTRIES; | |
1606 | r--; | |
1607 | } | |
1608 | ||
1609 | if (++e == NS_TST_NUM_ENTRIES) { | |
1610 | e = 0; | |
1611 | } | |
1612 | cl += n; | |
1613 | } | |
1614 | ||
1615 | /* End of fill procedure */ | |
1616 | ||
1617 | data = ns_tste_make(NS_TST_OPCODE_END, new_tst); | |
1618 | ns_write_sram(card, new_tst + NS_TST_NUM_ENTRIES, &data, 1); | |
1619 | ns_write_sram(card, card->tst_addr + NS_TST_NUM_ENTRIES, &data, 1); | |
1620 | card->tst_addr = new_tst; | |
1da177e4 LT |
1621 | } |
1622 | ||
1da177e4 LT |
1623 | static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) |
1624 | { | |
098fde11 C |
1625 | ns_dev *card; |
1626 | vc_map *vc; | |
1627 | scq_info *scq; | |
1628 | unsigned long buflen; | |
1629 | ns_scqe scqe; | |
1630 | u32 flags; /* TBD flags, not CPU flags */ | |
1631 | ||
1632 | card = vcc->dev->dev_data; | |
1633 | TXPRINTK("nicstar%d: ns_send() called.\n", card->index); | |
1634 | if ((vc = (vc_map *) vcc->dev_data) == NULL) { | |
1635 | printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", | |
1636 | card->index); | |
1637 | atomic_inc(&vcc->stats->tx_err); | |
1638 | dev_kfree_skb_any(skb); | |
1639 | return -EINVAL; | |
1640 | } | |
1da177e4 | 1641 | |
098fde11 C |
1642 | if (!vc->tx) { |
1643 | printk("nicstar%d: Trying to transmit on a non-tx VC.\n", | |
1644 | card->index); | |
1645 | atomic_inc(&vcc->stats->tx_err); | |
1646 | dev_kfree_skb_any(skb); | |
1647 | return -EINVAL; | |
1648 | } | |
1da177e4 | 1649 | |
098fde11 C |
1650 | if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { |
1651 | printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", | |
1652 | card->index); | |
1653 | atomic_inc(&vcc->stats->tx_err); | |
1654 | dev_kfree_skb_any(skb); | |
1655 | return -EINVAL; | |
1656 | } | |
1da177e4 | 1657 | |
098fde11 C |
1658 | if (skb_shinfo(skb)->nr_frags != 0) { |
1659 | printk("nicstar%d: No scatter-gather yet.\n", card->index); | |
1660 | atomic_inc(&vcc->stats->tx_err); | |
1661 | dev_kfree_skb_any(skb); | |
1662 | return -EINVAL; | |
1663 | } | |
1664 | ||
1665 | ATM_SKB(skb)->vcc = vcc; | |
1666 | ||
ede58ef2 C |
1667 | NS_PRV_DMA(skb) = dma_map_single(&card->pcidev->dev, skb->data, |
1668 | skb->len, DMA_TO_DEVICE); | |
864a3ff6 | 1669 | |
098fde11 C |
1670 | if (vcc->qos.aal == ATM_AAL5) { |
1671 | buflen = (skb->len + 47 + 8) / 48 * 48; /* Multiple of 48 */ | |
1672 | flags = NS_TBD_AAL5; | |
864a3ff6 C |
1673 | scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb)); |
1674 | scqe.word_3 = cpu_to_le32(skb->len); | |
098fde11 C |
1675 | scqe.word_4 = |
1676 | ns_tbd_mkword_4(0, (u32) vcc->vpi, (u32) vcc->vci, 0, | |
1677 | ATM_SKB(skb)-> | |
1678 | atm_options & ATM_ATMOPT_CLP ? 1 : 0); | |
1679 | flags |= NS_TBD_EOPDU; | |
1680 | } else { /* (vcc->qos.aal == ATM_AAL0) */ | |
1681 | ||
1682 | buflen = ATM_CELL_PAYLOAD; /* i.e., 48 bytes */ | |
1683 | flags = NS_TBD_AAL0; | |
864a3ff6 | 1684 | scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb) + NS_AAL0_HEADER); |
098fde11 C |
1685 | scqe.word_3 = cpu_to_le32(0x00000000); |
1686 | if (*skb->data & 0x02) /* Payload type 1 - end of pdu */ | |
1687 | flags |= NS_TBD_EOPDU; | |
1688 | scqe.word_4 = | |
1689 | cpu_to_le32(*((u32 *) skb->data) & ~NS_TBD_VC_MASK); | |
1690 | /* Force the VPI/VCI to be the same as in VCC struct */ | |
1691 | scqe.word_4 |= | |
1692 | cpu_to_le32((((u32) vcc-> | |
1693 | vpi) << NS_TBD_VPI_SHIFT | ((u32) vcc-> | |
1694 | vci) << | |
1695 | NS_TBD_VCI_SHIFT) & NS_TBD_VC_MASK); | |
1696 | } | |
1697 | ||
1698 | if (vcc->qos.txtp.traffic_class == ATM_CBR) { | |
1699 | scqe.word_1 = ns_tbd_mkword_1_novbr(flags, (u32) buflen); | |
1700 | scq = ((vc_map *) vcc->dev_data)->scq; | |
1701 | } else { | |
1702 | scqe.word_1 = | |
1703 | ns_tbd_mkword_1(flags, (u32) 1, (u32) 1, (u32) buflen); | |
1704 | scq = card->scq0; | |
1705 | } | |
1706 | ||
1707 | if (push_scqe(card, vc, scq, &scqe, skb) != 0) { | |
1708 | atomic_inc(&vcc->stats->tx_err); | |
1709 | dev_kfree_skb_any(skb); | |
1710 | return -EIO; | |
1711 | } | |
1712 | atomic_inc(&vcc->stats->tx); | |
1da177e4 | 1713 | |
098fde11 C |
1714 | return 0; |
1715 | } | |
1da177e4 | 1716 | |
098fde11 C |
1717 | static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, |
1718 | struct sk_buff *skb) | |
1da177e4 | 1719 | { |
098fde11 C |
1720 | unsigned long flags; |
1721 | ns_scqe tsr; | |
1722 | u32 scdi, scqi; | |
1723 | int scq_is_vbr; | |
1724 | u32 data; | |
1725 | int index; | |
1726 | ||
1727 | spin_lock_irqsave(&scq->lock, flags); | |
1728 | while (scq->tail == scq->next) { | |
1729 | if (in_interrupt()) { | |
1730 | spin_unlock_irqrestore(&scq->lock, flags); | |
1731 | printk("nicstar%d: Error pushing TBD.\n", card->index); | |
1732 | return 1; | |
1733 | } | |
1734 | ||
1735 | scq->full = 1; | |
118ce7ab AB |
1736 | wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq, |
1737 | scq->tail != scq->next, | |
1738 | scq->lock, | |
1739 | SCQFULL_TIMEOUT); | |
098fde11 C |
1740 | |
1741 | if (scq->full) { | |
1742 | spin_unlock_irqrestore(&scq->lock, flags); | |
1743 | printk("nicstar%d: Timeout pushing TBD.\n", | |
1744 | card->index); | |
1745 | return 1; | |
1746 | } | |
1747 | } | |
1748 | *scq->next = *tbd; | |
1749 | index = (int)(scq->next - scq->base); | |
1750 | scq->skb[index] = skb; | |
864a3ff6 C |
1751 | XPRINTK("nicstar%d: sending skb at 0x%p (pos %d).\n", |
1752 | card->index, skb, index); | |
1753 | XPRINTK("nicstar%d: TBD written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", | |
098fde11 C |
1754 | card->index, le32_to_cpu(tbd->word_1), le32_to_cpu(tbd->word_2), |
1755 | le32_to_cpu(tbd->word_3), le32_to_cpu(tbd->word_4), | |
864a3ff6 | 1756 | scq->next); |
098fde11 C |
1757 | if (scq->next == scq->last) |
1758 | scq->next = scq->base; | |
1759 | else | |
1760 | scq->next++; | |
1761 | ||
1762 | vc->tbd_count++; | |
1763 | if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) { | |
1764 | scq->tbd_count++; | |
1765 | scq_is_vbr = 1; | |
1766 | } else | |
1767 | scq_is_vbr = 0; | |
1768 | ||
1769 | if (vc->tbd_count >= MAX_TBD_PER_VC | |
1770 | || scq->tbd_count >= MAX_TBD_PER_SCQ) { | |
1771 | int has_run = 0; | |
1772 | ||
1773 | while (scq->tail == scq->next) { | |
1774 | if (in_interrupt()) { | |
864a3ff6 | 1775 | data = scq_virt_to_bus(scq, scq->next); |
098fde11 C |
1776 | ns_write_sram(card, scq->scd, &data, 1); |
1777 | spin_unlock_irqrestore(&scq->lock, flags); | |
1778 | printk("nicstar%d: Error pushing TSR.\n", | |
1779 | card->index); | |
1780 | return 0; | |
1781 | } | |
1782 | ||
1783 | scq->full = 1; | |
1784 | if (has_run++) | |
1785 | break; | |
118ce7ab AB |
1786 | wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq, |
1787 | scq->tail != scq->next, | |
1788 | scq->lock, | |
1789 | SCQFULL_TIMEOUT); | |
098fde11 C |
1790 | } |
1791 | ||
1792 | if (!scq->full) { | |
1793 | tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); | |
1794 | if (scq_is_vbr) | |
1795 | scdi = NS_TSR_SCDISVBR; | |
1796 | else | |
1797 | scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; | |
1798 | scqi = scq->next - scq->base; | |
1799 | tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); | |
1800 | tsr.word_3 = 0x00000000; | |
1801 | tsr.word_4 = 0x00000000; | |
1802 | ||
1803 | *scq->next = tsr; | |
1804 | index = (int)scqi; | |
1805 | scq->skb[index] = NULL; | |
1806 | XPRINTK | |
864a3ff6 | 1807 | ("nicstar%d: TSR written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", |
098fde11 C |
1808 | card->index, le32_to_cpu(tsr.word_1), |
1809 | le32_to_cpu(tsr.word_2), le32_to_cpu(tsr.word_3), | |
864a3ff6 | 1810 | le32_to_cpu(tsr.word_4), scq->next); |
098fde11 C |
1811 | if (scq->next == scq->last) |
1812 | scq->next = scq->base; | |
1813 | else | |
1814 | scq->next++; | |
1815 | vc->tbd_count = 0; | |
1816 | scq->tbd_count = 0; | |
1817 | } else | |
1818 | PRINTK("nicstar%d: Timeout pushing TSR.\n", | |
1819 | card->index); | |
1820 | } | |
864a3ff6 | 1821 | data = scq_virt_to_bus(scq, scq->next); |
098fde11 C |
1822 | ns_write_sram(card, scq->scd, &data, 1); |
1823 | ||
1824 | spin_unlock_irqrestore(&scq->lock, flags); | |
1825 | ||
1826 | return 0; | |
1da177e4 LT |
1827 | } |
1828 | ||
098fde11 | 1829 | static void process_tsq(ns_dev * card) |
1da177e4 | 1830 | { |
098fde11 C |
1831 | u32 scdi; |
1832 | scq_info *scq; | |
1833 | ns_tsi *previous = NULL, *one_ahead, *two_ahead; | |
1834 | int serviced_entries; /* flag indicating at least on entry was serviced */ | |
1835 | ||
1836 | serviced_entries = 0; | |
1837 | ||
1838 | if (card->tsq.next == card->tsq.last) | |
1839 | one_ahead = card->tsq.base; | |
1840 | else | |
1841 | one_ahead = card->tsq.next + 1; | |
1842 | ||
1843 | if (one_ahead == card->tsq.last) | |
1844 | two_ahead = card->tsq.base; | |
1845 | else | |
1846 | two_ahead = one_ahead + 1; | |
1847 | ||
1848 | while (!ns_tsi_isempty(card->tsq.next) || !ns_tsi_isempty(one_ahead) || | |
1849 | !ns_tsi_isempty(two_ahead)) | |
1850 | /* At most two empty, as stated in the 77201 errata */ | |
1851 | { | |
1852 | serviced_entries = 1; | |
1853 | ||
1854 | /* Skip the one or two possible empty entries */ | |
1855 | while (ns_tsi_isempty(card->tsq.next)) { | |
1856 | if (card->tsq.next == card->tsq.last) | |
1857 | card->tsq.next = card->tsq.base; | |
1858 | else | |
1859 | card->tsq.next++; | |
1860 | } | |
1861 | ||
1862 | if (!ns_tsi_tmrof(card->tsq.next)) { | |
1863 | scdi = ns_tsi_getscdindex(card->tsq.next); | |
1864 | if (scdi == NS_TSI_SCDISVBR) | |
1865 | scq = card->scq0; | |
1866 | else { | |
1867 | if (card->scd2vc[scdi] == NULL) { | |
1868 | printk | |
1869 | ("nicstar%d: could not find VC from SCD index.\n", | |
1870 | card->index); | |
1871 | ns_tsi_init(card->tsq.next); | |
1872 | return; | |
1873 | } | |
1874 | scq = card->scd2vc[scdi]->scq; | |
1875 | } | |
1876 | drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next)); | |
1877 | scq->full = 0; | |
1878 | wake_up_interruptible(&(scq->scqfull_waitq)); | |
1879 | } | |
1880 | ||
1881 | ns_tsi_init(card->tsq.next); | |
1882 | previous = card->tsq.next; | |
1883 | if (card->tsq.next == card->tsq.last) | |
1884 | card->tsq.next = card->tsq.base; | |
1885 | else | |
1886 | card->tsq.next++; | |
1887 | ||
1888 | if (card->tsq.next == card->tsq.last) | |
1889 | one_ahead = card->tsq.base; | |
1890 | else | |
1891 | one_ahead = card->tsq.next + 1; | |
1892 | ||
1893 | if (one_ahead == card->tsq.last) | |
1894 | two_ahead = card->tsq.base; | |
1895 | else | |
1896 | two_ahead = one_ahead + 1; | |
1897 | } | |
1898 | ||
864a3ff6 C |
1899 | if (serviced_entries) |
1900 | writel(PTR_DIFF(previous, card->tsq.base), | |
098fde11 | 1901 | card->membase + TSQH); |
1da177e4 LT |
1902 | } |
1903 | ||
098fde11 | 1904 | static void drain_scq(ns_dev * card, scq_info * scq, int pos) |
1da177e4 | 1905 | { |
098fde11 C |
1906 | struct atm_vcc *vcc; |
1907 | struct sk_buff *skb; | |
1908 | int i; | |
1909 | unsigned long flags; | |
1910 | ||
864a3ff6 C |
1911 | XPRINTK("nicstar%d: drain_scq() called, scq at 0x%p, pos %d.\n", |
1912 | card->index, scq, pos); | |
098fde11 C |
1913 | if (pos >= scq->num_entries) { |
1914 | printk("nicstar%d: Bad index on drain_scq().\n", card->index); | |
1915 | return; | |
1916 | } | |
1917 | ||
1918 | spin_lock_irqsave(&scq->lock, flags); | |
1919 | i = (int)(scq->tail - scq->base); | |
1920 | if (++i == scq->num_entries) | |
1921 | i = 0; | |
1922 | while (i != pos) { | |
1923 | skb = scq->skb[i]; | |
864a3ff6 C |
1924 | XPRINTK("nicstar%d: freeing skb at 0x%p (index %d).\n", |
1925 | card->index, skb, i); | |
098fde11 | 1926 | if (skb != NULL) { |
ede58ef2 | 1927 | dma_unmap_single(&card->pcidev->dev, |
864a3ff6 C |
1928 | NS_PRV_DMA(skb), |
1929 | skb->len, | |
ede58ef2 | 1930 | DMA_TO_DEVICE); |
098fde11 C |
1931 | vcc = ATM_SKB(skb)->vcc; |
1932 | if (vcc && vcc->pop != NULL) { | |
1933 | vcc->pop(vcc, skb); | |
1934 | } else { | |
1935 | dev_kfree_skb_irq(skb); | |
1936 | } | |
1937 | scq->skb[i] = NULL; | |
1938 | } | |
1939 | if (++i == scq->num_entries) | |
1940 | i = 0; | |
1941 | } | |
1942 | scq->tail = scq->base + pos; | |
1943 | spin_unlock_irqrestore(&scq->lock, flags); | |
1da177e4 LT |
1944 | } |
1945 | ||
098fde11 C |
1946 | static void process_rsq(ns_dev * card) |
1947 | { | |
1948 | ns_rsqe *previous; | |
1949 | ||
1950 | if (!ns_rsqe_valid(card->rsq.next)) | |
1951 | return; | |
1952 | do { | |
1953 | dequeue_rx(card, card->rsq.next); | |
1954 | ns_rsqe_init(card->rsq.next); | |
1955 | previous = card->rsq.next; | |
1956 | if (card->rsq.next == card->rsq.last) | |
1957 | card->rsq.next = card->rsq.base; | |
1958 | else | |
1959 | card->rsq.next++; | |
1960 | } while (ns_rsqe_valid(card->rsq.next)); | |
864a3ff6 | 1961 | writel(PTR_DIFF(previous, card->rsq.base), card->membase + RSQH); |
098fde11 | 1962 | } |
1da177e4 | 1963 | |
098fde11 | 1964 | static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) |
1da177e4 | 1965 | { |
098fde11 C |
1966 | u32 vpi, vci; |
1967 | vc_map *vc; | |
1968 | struct sk_buff *iovb; | |
1969 | struct iovec *iov; | |
1970 | struct atm_vcc *vcc; | |
1971 | struct sk_buff *skb; | |
1972 | unsigned short aal5_len; | |
1973 | int len; | |
1974 | u32 stat; | |
864a3ff6 | 1975 | u32 id; |
098fde11 C |
1976 | |
1977 | stat = readl(card->membase + STAT); | |
1978 | card->sbfqc = ns_stat_sfbqc_get(stat); | |
1979 | card->lbfqc = ns_stat_lfbqc_get(stat); | |
1980 | ||
864a3ff6 | 1981 | id = le32_to_cpu(rsqe->buffer_handle); |
d3e709e6 | 1982 | skb = idr_remove(&card->idr, id); |
864a3ff6 C |
1983 | if (!skb) { |
1984 | RXPRINTK(KERN_ERR | |
d3e709e6 | 1985 | "nicstar%d: skb not found!\n", card->index); |
864a3ff6 C |
1986 | return; |
1987 | } | |
ede58ef2 C |
1988 | dma_sync_single_for_cpu(&card->pcidev->dev, |
1989 | NS_PRV_DMA(skb), | |
1990 | (NS_PRV_BUFTYPE(skb) == BUF_SM | |
1991 | ? NS_SMSKBSIZE : NS_LGSKBSIZE), | |
1992 | DMA_FROM_DEVICE); | |
1993 | dma_unmap_single(&card->pcidev->dev, | |
864a3ff6 C |
1994 | NS_PRV_DMA(skb), |
1995 | (NS_PRV_BUFTYPE(skb) == BUF_SM | |
1996 | ? NS_SMSKBSIZE : NS_LGSKBSIZE), | |
ede58ef2 | 1997 | DMA_FROM_DEVICE); |
098fde11 C |
1998 | vpi = ns_rsqe_vpi(rsqe); |
1999 | vci = ns_rsqe_vci(rsqe); | |
2000 | if (vpi >= 1UL << card->vpibits || vci >= 1UL << card->vcibits) { | |
2001 | printk("nicstar%d: SDU received for out-of-range vc %d.%d.\n", | |
2002 | card->index, vpi, vci); | |
2003 | recycle_rx_buf(card, skb); | |
2004 | return; | |
2005 | } | |
2006 | ||
2007 | vc = &(card->vcmap[vpi << card->vcibits | vci]); | |
2008 | if (!vc->rx) { | |
2009 | RXPRINTK("nicstar%d: SDU received on non-rx vc %d.%d.\n", | |
2010 | card->index, vpi, vci); | |
2011 | recycle_rx_buf(card, skb); | |
2012 | return; | |
2013 | } | |
2014 | ||
2015 | vcc = vc->rx_vcc; | |
2016 | ||
2017 | if (vcc->qos.aal == ATM_AAL0) { | |
2018 | struct sk_buff *sb; | |
2019 | unsigned char *cell; | |
2020 | int i; | |
2021 | ||
2022 | cell = skb->data; | |
2023 | for (i = ns_rsqe_cellcount(rsqe); i; i--) { | |
0ba8abb7 ME |
2024 | sb = dev_alloc_skb(NS_SMSKBSIZE); |
2025 | if (!sb) { | |
098fde11 C |
2026 | printk |
2027 | ("nicstar%d: Can't allocate buffers for aal0.\n", | |
2028 | card->index); | |
2029 | atomic_add(i, &vcc->stats->rx_drop); | |
2030 | break; | |
2031 | } | |
2032 | if (!atm_charge(vcc, sb->truesize)) { | |
2033 | RXPRINTK | |
2034 | ("nicstar%d: atm_charge() dropped aal0 packets.\n", | |
2035 | card->index); | |
2036 | atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ | |
2037 | dev_kfree_skb_any(sb); | |
2038 | break; | |
2039 | } | |
2040 | /* Rebuild the header */ | |
2041 | *((u32 *) sb->data) = le32_to_cpu(rsqe->word_1) << 4 | | |
2042 | (ns_rsqe_clp(rsqe) ? 0x00000001 : 0x00000000); | |
2043 | if (i == 1 && ns_rsqe_eopdu(rsqe)) | |
2044 | *((u32 *) sb->data) |= 0x00000002; | |
2045 | skb_put(sb, NS_AAL0_HEADER); | |
2046 | memcpy(skb_tail_pointer(sb), cell, ATM_CELL_PAYLOAD); | |
2047 | skb_put(sb, ATM_CELL_PAYLOAD); | |
2048 | ATM_SKB(sb)->vcc = vcc; | |
2049 | __net_timestamp(sb); | |
2050 | vcc->push(vcc, sb); | |
2051 | atomic_inc(&vcc->stats->rx); | |
2052 | cell += ATM_CELL_PAYLOAD; | |
2053 | } | |
2054 | ||
2055 | recycle_rx_buf(card, skb); | |
2056 | return; | |
2057 | } | |
2058 | ||
2059 | /* To reach this point, the AAL layer can only be AAL5 */ | |
2060 | ||
2061 | if ((iovb = vc->rx_iov) == NULL) { | |
2062 | iovb = skb_dequeue(&(card->iovpool.queue)); | |
2063 | if (iovb == NULL) { /* No buffers in the queue */ | |
2064 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC); | |
2065 | if (iovb == NULL) { | |
2066 | printk("nicstar%d: Out of iovec buffers.\n", | |
2067 | card->index); | |
2068 | atomic_inc(&vcc->stats->rx_drop); | |
2069 | recycle_rx_buf(card, skb); | |
2070 | return; | |
2071 | } | |
864a3ff6 | 2072 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
2073 | } else if (--card->iovpool.count < card->iovnr.min) { |
2074 | struct sk_buff *new_iovb; | |
2075 | if ((new_iovb = | |
2076 | alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL) { | |
864a3ff6 | 2077 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
2078 | skb_queue_tail(&card->iovpool.queue, new_iovb); |
2079 | card->iovpool.count++; | |
2080 | } | |
2081 | } | |
2082 | vc->rx_iov = iovb; | |
864a3ff6 | 2083 | NS_PRV_IOVCNT(iovb) = 0; |
098fde11 C |
2084 | iovb->len = 0; |
2085 | iovb->data = iovb->head; | |
2086 | skb_reset_tail_pointer(iovb); | |
098fde11 C |
2087 | /* IMPORTANT: a pointer to the sk_buff containing the small or large |
2088 | buffer is stored as iovec base, NOT a pointer to the | |
2089 | small or large buffer itself. */ | |
864a3ff6 | 2090 | } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) { |
098fde11 C |
2091 | printk("nicstar%d: received too big AAL5 SDU.\n", card->index); |
2092 | atomic_inc(&vcc->stats->rx_err); | |
2093 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
2094 | NS_MAX_IOVECS); | |
864a3ff6 | 2095 | NS_PRV_IOVCNT(iovb) = 0; |
098fde11 C |
2096 | iovb->len = 0; |
2097 | iovb->data = iovb->head; | |
2098 | skb_reset_tail_pointer(iovb); | |
098fde11 | 2099 | } |
864a3ff6 | 2100 | iov = &((struct iovec *)iovb->data)[NS_PRV_IOVCNT(iovb)++]; |
098fde11 C |
2101 | iov->iov_base = (void *)skb; |
2102 | iov->iov_len = ns_rsqe_cellcount(rsqe) * 48; | |
2103 | iovb->len += iov->iov_len; | |
2104 | ||
864a3ff6 C |
2105 | #ifdef EXTRA_DEBUG |
2106 | if (NS_PRV_IOVCNT(iovb) == 1) { | |
2107 | if (NS_PRV_BUFTYPE(skb) != BUF_SM) { | |
098fde11 C |
2108 | printk |
2109 | ("nicstar%d: Expected a small buffer, and this is not one.\n", | |
2110 | card->index); | |
2111 | which_list(card, skb); | |
2112 | atomic_inc(&vcc->stats->rx_err); | |
2113 | recycle_rx_buf(card, skb); | |
2114 | vc->rx_iov = NULL; | |
2115 | recycle_iov_buf(card, iovb); | |
2116 | return; | |
2117 | } | |
864a3ff6 | 2118 | } else { /* NS_PRV_IOVCNT(iovb) >= 2 */ |
098fde11 | 2119 | |
864a3ff6 | 2120 | if (NS_PRV_BUFTYPE(skb) != BUF_LG) { |
098fde11 C |
2121 | printk |
2122 | ("nicstar%d: Expected a large buffer, and this is not one.\n", | |
2123 | card->index); | |
2124 | which_list(card, skb); | |
2125 | atomic_inc(&vcc->stats->rx_err); | |
2126 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
864a3ff6 | 2127 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2128 | vc->rx_iov = NULL; |
2129 | recycle_iov_buf(card, iovb); | |
2130 | return; | |
2131 | } | |
2132 | } | |
864a3ff6 | 2133 | #endif /* EXTRA_DEBUG */ |
098fde11 C |
2134 | |
2135 | if (ns_rsqe_eopdu(rsqe)) { | |
2136 | /* This works correctly regardless of the endianness of the host */ | |
864a3ff6 C |
2137 | unsigned char *L1L2 = (unsigned char *) |
2138 | (skb->data + iov->iov_len - 6); | |
098fde11 C |
2139 | aal5_len = L1L2[0] << 8 | L1L2[1]; |
2140 | len = (aal5_len == 0x0000) ? 0x10000 : aal5_len; | |
2141 | if (ns_rsqe_crcerr(rsqe) || | |
2142 | len + 8 > iovb->len || len + (47 + 8) < iovb->len) { | |
2143 | printk("nicstar%d: AAL5 CRC error", card->index); | |
2144 | if (len + 8 > iovb->len || len + (47 + 8) < iovb->len) | |
2145 | printk(" - PDU size mismatch.\n"); | |
2146 | else | |
2147 | printk(".\n"); | |
2148 | atomic_inc(&vcc->stats->rx_err); | |
2149 | recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, | |
864a3ff6 | 2150 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2151 | vc->rx_iov = NULL; |
2152 | recycle_iov_buf(card, iovb); | |
2153 | return; | |
2154 | } | |
2155 | ||
2156 | /* By this point we (hopefully) have a complete SDU without errors. */ | |
2157 | ||
864a3ff6 | 2158 | if (NS_PRV_IOVCNT(iovb) == 1) { /* Just a small buffer */ |
098fde11 C |
2159 | /* skb points to a small buffer */ |
2160 | if (!atm_charge(vcc, skb->truesize)) { | |
2161 | push_rxbufs(card, skb); | |
2162 | atomic_inc(&vcc->stats->rx_drop); | |
2163 | } else { | |
2164 | skb_put(skb, len); | |
2165 | dequeue_sm_buf(card, skb); | |
098fde11 C |
2166 | ATM_SKB(skb)->vcc = vcc; |
2167 | __net_timestamp(skb); | |
2168 | vcc->push(vcc, skb); | |
2169 | atomic_inc(&vcc->stats->rx); | |
2170 | } | |
864a3ff6 | 2171 | } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */ |
098fde11 C |
2172 | struct sk_buff *sb; |
2173 | ||
2174 | sb = (struct sk_buff *)(iov - 1)->iov_base; | |
2175 | /* skb points to a large buffer */ | |
2176 | ||
2177 | if (len <= NS_SMBUFSIZE) { | |
2178 | if (!atm_charge(vcc, sb->truesize)) { | |
2179 | push_rxbufs(card, sb); | |
2180 | atomic_inc(&vcc->stats->rx_drop); | |
2181 | } else { | |
2182 | skb_put(sb, len); | |
2183 | dequeue_sm_buf(card, sb); | |
098fde11 C |
2184 | ATM_SKB(sb)->vcc = vcc; |
2185 | __net_timestamp(sb); | |
2186 | vcc->push(vcc, sb); | |
2187 | atomic_inc(&vcc->stats->rx); | |
2188 | } | |
2189 | ||
2190 | push_rxbufs(card, skb); | |
2191 | ||
2192 | } else { /* len > NS_SMBUFSIZE, the usual case */ | |
2193 | ||
2194 | if (!atm_charge(vcc, skb->truesize)) { | |
2195 | push_rxbufs(card, skb); | |
2196 | atomic_inc(&vcc->stats->rx_drop); | |
2197 | } else { | |
2198 | dequeue_lg_buf(card, skb); | |
098fde11 C |
2199 | skb_push(skb, NS_SMBUFSIZE); |
2200 | skb_copy_from_linear_data(sb, skb->data, | |
2201 | NS_SMBUFSIZE); | |
2202 | skb_put(skb, len - NS_SMBUFSIZE); | |
2203 | ATM_SKB(skb)->vcc = vcc; | |
2204 | __net_timestamp(skb); | |
2205 | vcc->push(vcc, skb); | |
2206 | atomic_inc(&vcc->stats->rx); | |
2207 | } | |
2208 | ||
2209 | push_rxbufs(card, sb); | |
2210 | ||
2211 | } | |
2212 | ||
2213 | } else { /* Must push a huge buffer */ | |
2214 | ||
2215 | struct sk_buff *hb, *sb, *lb; | |
2216 | int remaining, tocopy; | |
2217 | int j; | |
2218 | ||
2219 | hb = skb_dequeue(&(card->hbpool.queue)); | |
2220 | if (hb == NULL) { /* No buffers in the queue */ | |
2221 | ||
2222 | hb = dev_alloc_skb(NS_HBUFSIZE); | |
2223 | if (hb == NULL) { | |
2224 | printk | |
2225 | ("nicstar%d: Out of huge buffers.\n", | |
2226 | card->index); | |
2227 | atomic_inc(&vcc->stats->rx_drop); | |
2228 | recycle_iovec_rx_bufs(card, | |
2229 | (struct iovec *) | |
2230 | iovb->data, | |
864a3ff6 | 2231 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2232 | vc->rx_iov = NULL; |
2233 | recycle_iov_buf(card, iovb); | |
2234 | return; | |
2235 | } else if (card->hbpool.count < card->hbnr.min) { | |
2236 | struct sk_buff *new_hb; | |
2237 | if ((new_hb = | |
2238 | dev_alloc_skb(NS_HBUFSIZE)) != | |
2239 | NULL) { | |
2240 | skb_queue_tail(&card->hbpool. | |
2241 | queue, new_hb); | |
2242 | card->hbpool.count++; | |
2243 | } | |
2244 | } | |
864a3ff6 | 2245 | NS_PRV_BUFTYPE(hb) = BUF_NONE; |
098fde11 C |
2246 | } else if (--card->hbpool.count < card->hbnr.min) { |
2247 | struct sk_buff *new_hb; | |
2248 | if ((new_hb = | |
2249 | dev_alloc_skb(NS_HBUFSIZE)) != NULL) { | |
864a3ff6 | 2250 | NS_PRV_BUFTYPE(new_hb) = BUF_NONE; |
098fde11 C |
2251 | skb_queue_tail(&card->hbpool.queue, |
2252 | new_hb); | |
2253 | card->hbpool.count++; | |
2254 | } | |
2255 | if (card->hbpool.count < card->hbnr.min) { | |
2256 | if ((new_hb = | |
2257 | dev_alloc_skb(NS_HBUFSIZE)) != | |
2258 | NULL) { | |
864a3ff6 | 2259 | NS_PRV_BUFTYPE(new_hb) = |
098fde11 C |
2260 | BUF_NONE; |
2261 | skb_queue_tail(&card->hbpool. | |
2262 | queue, new_hb); | |
2263 | card->hbpool.count++; | |
2264 | } | |
2265 | } | |
2266 | } | |
2267 | ||
2268 | iov = (struct iovec *)iovb->data; | |
2269 | ||
2270 | if (!atm_charge(vcc, hb->truesize)) { | |
2271 | recycle_iovec_rx_bufs(card, iov, | |
864a3ff6 | 2272 | NS_PRV_IOVCNT(iovb)); |
098fde11 C |
2273 | if (card->hbpool.count < card->hbnr.max) { |
2274 | skb_queue_tail(&card->hbpool.queue, hb); | |
2275 | card->hbpool.count++; | |
2276 | } else | |
2277 | dev_kfree_skb_any(hb); | |
2278 | atomic_inc(&vcc->stats->rx_drop); | |
2279 | } else { | |
2280 | /* Copy the small buffer to the huge buffer */ | |
2281 | sb = (struct sk_buff *)iov->iov_base; | |
2282 | skb_copy_from_linear_data(sb, hb->data, | |
2283 | iov->iov_len); | |
2284 | skb_put(hb, iov->iov_len); | |
2285 | remaining = len - iov->iov_len; | |
2286 | iov++; | |
2287 | /* Free the small buffer */ | |
2288 | push_rxbufs(card, sb); | |
2289 | ||
2290 | /* Copy all large buffers to the huge buffer and free them */ | |
864a3ff6 | 2291 | for (j = 1; j < NS_PRV_IOVCNT(iovb); j++) { |
098fde11 C |
2292 | lb = (struct sk_buff *)iov->iov_base; |
2293 | tocopy = | |
2294 | min_t(int, remaining, iov->iov_len); | |
2295 | skb_copy_from_linear_data(lb, | |
2296 | skb_tail_pointer | |
2297 | (hb), tocopy); | |
2298 | skb_put(hb, tocopy); | |
2299 | iov++; | |
2300 | remaining -= tocopy; | |
2301 | push_rxbufs(card, lb); | |
2302 | } | |
1da177e4 | 2303 | #ifdef EXTRA_DEBUG |
098fde11 C |
2304 | if (remaining != 0 || hb->len != len) |
2305 | printk | |
2306 | ("nicstar%d: Huge buffer len mismatch.\n", | |
2307 | card->index); | |
1da177e4 | 2308 | #endif /* EXTRA_DEBUG */ |
098fde11 | 2309 | ATM_SKB(hb)->vcc = vcc; |
098fde11 C |
2310 | __net_timestamp(hb); |
2311 | vcc->push(vcc, hb); | |
2312 | atomic_inc(&vcc->stats->rx); | |
2313 | } | |
2314 | } | |
1da177e4 | 2315 | |
098fde11 C |
2316 | vc->rx_iov = NULL; |
2317 | recycle_iov_buf(card, iovb); | |
2318 | } | |
1da177e4 LT |
2319 | |
2320 | } | |
2321 | ||
098fde11 | 2322 | static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb) |
1da177e4 | 2323 | { |
864a3ff6 | 2324 | if (unlikely(NS_PRV_BUFTYPE(skb) == BUF_NONE)) { |
098fde11 C |
2325 | printk("nicstar%d: What kind of rx buffer is this?\n", |
2326 | card->index); | |
8728b834 DM |
2327 | dev_kfree_skb_any(skb); |
2328 | } else | |
2329 | push_rxbufs(card, skb); | |
2330 | } | |
1da177e4 | 2331 | |
098fde11 | 2332 | static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count) |
1da177e4 | 2333 | { |
8728b834 | 2334 | while (count-- > 0) |
098fde11 | 2335 | recycle_rx_buf(card, (struct sk_buff *)(iov++)->iov_base); |
1da177e4 LT |
2336 | } |
2337 | ||
098fde11 | 2338 | static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb) |
1da177e4 | 2339 | { |
098fde11 C |
2340 | if (card->iovpool.count < card->iovnr.max) { |
2341 | skb_queue_tail(&card->iovpool.queue, iovb); | |
2342 | card->iovpool.count++; | |
2343 | } else | |
2344 | dev_kfree_skb_any(iovb); | |
1da177e4 LT |
2345 | } |
2346 | ||
098fde11 | 2347 | static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb) |
1da177e4 | 2348 | { |
098fde11 | 2349 | skb_unlink(sb, &card->sbpool.queue); |
098fde11 C |
2350 | if (card->sbfqc < card->sbnr.init) { |
2351 | struct sk_buff *new_sb; | |
2352 | if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { | |
864a3ff6 | 2353 | NS_PRV_BUFTYPE(new_sb) = BUF_SM; |
098fde11 C |
2354 | skb_queue_tail(&card->sbpool.queue, new_sb); |
2355 | skb_reserve(new_sb, NS_AAL0_HEADER); | |
2356 | push_rxbufs(card, new_sb); | |
2357 | } | |
2358 | } | |
2359 | if (card->sbfqc < card->sbnr.init) | |
098fde11 C |
2360 | { |
2361 | struct sk_buff *new_sb; | |
2362 | if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { | |
864a3ff6 | 2363 | NS_PRV_BUFTYPE(new_sb) = BUF_SM; |
098fde11 C |
2364 | skb_queue_tail(&card->sbpool.queue, new_sb); |
2365 | skb_reserve(new_sb, NS_AAL0_HEADER); | |
2366 | push_rxbufs(card, new_sb); | |
2367 | } | |
2368 | } | |
1da177e4 LT |
2369 | } |
2370 | ||
098fde11 | 2371 | static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb) |
1da177e4 | 2372 | { |
098fde11 | 2373 | skb_unlink(lb, &card->lbpool.queue); |
098fde11 C |
2374 | if (card->lbfqc < card->lbnr.init) { |
2375 | struct sk_buff *new_lb; | |
2376 | if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { | |
864a3ff6 | 2377 | NS_PRV_BUFTYPE(new_lb) = BUF_LG; |
098fde11 C |
2378 | skb_queue_tail(&card->lbpool.queue, new_lb); |
2379 | skb_reserve(new_lb, NS_SMBUFSIZE); | |
2380 | push_rxbufs(card, new_lb); | |
2381 | } | |
2382 | } | |
2383 | if (card->lbfqc < card->lbnr.init) | |
098fde11 C |
2384 | { |
2385 | struct sk_buff *new_lb; | |
2386 | if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { | |
864a3ff6 | 2387 | NS_PRV_BUFTYPE(new_lb) = BUF_LG; |
098fde11 C |
2388 | skb_queue_tail(&card->lbpool.queue, new_lb); |
2389 | skb_reserve(new_lb, NS_SMBUFSIZE); | |
2390 | push_rxbufs(card, new_lb); | |
2391 | } | |
2392 | } | |
1da177e4 LT |
2393 | } |
2394 | ||
098fde11 | 2395 | static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page) |
1da177e4 | 2396 | { |
098fde11 C |
2397 | u32 stat; |
2398 | ns_dev *card; | |
2399 | int left; | |
2400 | ||
2401 | left = (int)*pos; | |
2402 | card = (ns_dev *) dev->dev_data; | |
2403 | stat = readl(card->membase + STAT); | |
2404 | if (!left--) | |
2405 | return sprintf(page, "Pool count min init max \n"); | |
2406 | if (!left--) | |
2407 | return sprintf(page, "Small %5d %5d %5d %5d \n", | |
2408 | ns_stat_sfbqc_get(stat), card->sbnr.min, | |
2409 | card->sbnr.init, card->sbnr.max); | |
2410 | if (!left--) | |
2411 | return sprintf(page, "Large %5d %5d %5d %5d \n", | |
2412 | ns_stat_lfbqc_get(stat), card->lbnr.min, | |
2413 | card->lbnr.init, card->lbnr.max); | |
2414 | if (!left--) | |
2415 | return sprintf(page, "Huge %5d %5d %5d %5d \n", | |
2416 | card->hbpool.count, card->hbnr.min, | |
2417 | card->hbnr.init, card->hbnr.max); | |
2418 | if (!left--) | |
2419 | return sprintf(page, "Iovec %5d %5d %5d %5d \n", | |
2420 | card->iovpool.count, card->iovnr.min, | |
2421 | card->iovnr.init, card->iovnr.max); | |
2422 | if (!left--) { | |
2423 | int retval; | |
2424 | retval = | |
2425 | sprintf(page, "Interrupt counter: %u \n", card->intcnt); | |
2426 | card->intcnt = 0; | |
2427 | return retval; | |
2428 | } | |
1da177e4 | 2429 | #if 0 |
098fde11 C |
2430 | /* Dump 25.6 Mbps PHY registers */ |
2431 | /* Now there's a 25.6 Mbps PHY driver this code isn't needed. I left it | |
2432 | here just in case it's needed for debugging. */ | |
2433 | if (card->max_pcr == ATM_25_PCR && !left--) { | |
2434 | u32 phy_regs[4]; | |
2435 | u32 i; | |
2436 | ||
2437 | for (i = 0; i < 4; i++) { | |
2438 | while (CMD_BUSY(card)) ; | |
2439 | writel(NS_CMD_READ_UTILITY | 0x00000200 | i, | |
2440 | card->membase + CMD); | |
2441 | while (CMD_BUSY(card)) ; | |
2442 | phy_regs[i] = readl(card->membase + DR0) & 0x000000FF; | |
2443 | } | |
2444 | ||
2445 | return sprintf(page, "PHY regs: 0x%02X 0x%02X 0x%02X 0x%02X \n", | |
2446 | phy_regs[0], phy_regs[1], phy_regs[2], | |
2447 | phy_regs[3]); | |
2448 | } | |
1da177e4 LT |
2449 | #endif /* 0 - Dump 25.6 Mbps PHY registers */ |
2450 | #if 0 | |
098fde11 C |
2451 | /* Dump TST */ |
2452 | if (left-- < NS_TST_NUM_ENTRIES) { | |
2453 | if (card->tste2vc[left + 1] == NULL) | |
2454 | return sprintf(page, "%5d - VBR/UBR \n", left + 1); | |
2455 | else | |
2456 | return sprintf(page, "%5d - %d %d \n", left + 1, | |
2457 | card->tste2vc[left + 1]->tx_vcc->vpi, | |
2458 | card->tste2vc[left + 1]->tx_vcc->vci); | |
2459 | } | |
1da177e4 | 2460 | #endif /* 0 */ |
098fde11 | 2461 | return 0; |
1da177e4 LT |
2462 | } |
2463 | ||
098fde11 | 2464 | static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg) |
1da177e4 | 2465 | { |
098fde11 C |
2466 | ns_dev *card; |
2467 | pool_levels pl; | |
2468 | long btype; | |
2469 | unsigned long flags; | |
2470 | ||
2471 | card = dev->dev_data; | |
2472 | switch (cmd) { | |
2473 | case NS_GETPSTAT: | |
2474 | if (get_user | |
2475 | (pl.buftype, &((pool_levels __user *) arg)->buftype)) | |
2476 | return -EFAULT; | |
2477 | switch (pl.buftype) { | |
2478 | case NS_BUFTYPE_SMALL: | |
2479 | pl.count = | |
2480 | ns_stat_sfbqc_get(readl(card->membase + STAT)); | |
2481 | pl.level.min = card->sbnr.min; | |
2482 | pl.level.init = card->sbnr.init; | |
2483 | pl.level.max = card->sbnr.max; | |
2484 | break; | |
2485 | ||
2486 | case NS_BUFTYPE_LARGE: | |
2487 | pl.count = | |
2488 | ns_stat_lfbqc_get(readl(card->membase + STAT)); | |
2489 | pl.level.min = card->lbnr.min; | |
2490 | pl.level.init = card->lbnr.init; | |
2491 | pl.level.max = card->lbnr.max; | |
2492 | break; | |
2493 | ||
2494 | case NS_BUFTYPE_HUGE: | |
2495 | pl.count = card->hbpool.count; | |
2496 | pl.level.min = card->hbnr.min; | |
2497 | pl.level.init = card->hbnr.init; | |
2498 | pl.level.max = card->hbnr.max; | |
2499 | break; | |
2500 | ||
2501 | case NS_BUFTYPE_IOVEC: | |
2502 | pl.count = card->iovpool.count; | |
2503 | pl.level.min = card->iovnr.min; | |
2504 | pl.level.init = card->iovnr.init; | |
2505 | pl.level.max = card->iovnr.max; | |
2506 | break; | |
2507 | ||
2508 | default: | |
2509 | return -ENOIOCTLCMD; | |
2510 | ||
2511 | } | |
2512 | if (!copy_to_user((pool_levels __user *) arg, &pl, sizeof(pl))) | |
2513 | return (sizeof(pl)); | |
2514 | else | |
2515 | return -EFAULT; | |
2516 | ||
2517 | case NS_SETBUFLEV: | |
2518 | if (!capable(CAP_NET_ADMIN)) | |
2519 | return -EPERM; | |
2520 | if (copy_from_user(&pl, (pool_levels __user *) arg, sizeof(pl))) | |
2521 | return -EFAULT; | |
2522 | if (pl.level.min >= pl.level.init | |
2523 | || pl.level.init >= pl.level.max) | |
2524 | return -EINVAL; | |
2525 | if (pl.level.min == 0) | |
2526 | return -EINVAL; | |
2527 | switch (pl.buftype) { | |
2528 | case NS_BUFTYPE_SMALL: | |
2529 | if (pl.level.max > TOP_SB) | |
2530 | return -EINVAL; | |
2531 | card->sbnr.min = pl.level.min; | |
2532 | card->sbnr.init = pl.level.init; | |
2533 | card->sbnr.max = pl.level.max; | |
2534 | break; | |
2535 | ||
2536 | case NS_BUFTYPE_LARGE: | |
2537 | if (pl.level.max > TOP_LB) | |
2538 | return -EINVAL; | |
2539 | card->lbnr.min = pl.level.min; | |
2540 | card->lbnr.init = pl.level.init; | |
2541 | card->lbnr.max = pl.level.max; | |
2542 | break; | |
2543 | ||
2544 | case NS_BUFTYPE_HUGE: | |
2545 | if (pl.level.max > TOP_HB) | |
2546 | return -EINVAL; | |
2547 | card->hbnr.min = pl.level.min; | |
2548 | card->hbnr.init = pl.level.init; | |
2549 | card->hbnr.max = pl.level.max; | |
2550 | break; | |
2551 | ||
2552 | case NS_BUFTYPE_IOVEC: | |
2553 | if (pl.level.max > TOP_IOVB) | |
2554 | return -EINVAL; | |
2555 | card->iovnr.min = pl.level.min; | |
2556 | card->iovnr.init = pl.level.init; | |
2557 | card->iovnr.max = pl.level.max; | |
2558 | break; | |
2559 | ||
2560 | default: | |
2561 | return -EINVAL; | |
2562 | ||
2563 | } | |
2564 | return 0; | |
2565 | ||
2566 | case NS_ADJBUFLEV: | |
2567 | if (!capable(CAP_NET_ADMIN)) | |
2568 | return -EPERM; | |
2569 | btype = (long)arg; /* a long is the same size as a pointer or bigger */ | |
2570 | switch (btype) { | |
2571 | case NS_BUFTYPE_SMALL: | |
2572 | while (card->sbfqc < card->sbnr.init) { | |
2573 | struct sk_buff *sb; | |
2574 | ||
2575 | sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); | |
2576 | if (sb == NULL) | |
2577 | return -ENOMEM; | |
864a3ff6 | 2578 | NS_PRV_BUFTYPE(sb) = BUF_SM; |
098fde11 C |
2579 | skb_queue_tail(&card->sbpool.queue, sb); |
2580 | skb_reserve(sb, NS_AAL0_HEADER); | |
2581 | push_rxbufs(card, sb); | |
2582 | } | |
2583 | break; | |
2584 | ||
2585 | case NS_BUFTYPE_LARGE: | |
2586 | while (card->lbfqc < card->lbnr.init) { | |
2587 | struct sk_buff *lb; | |
2588 | ||
2589 | lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); | |
2590 | if (lb == NULL) | |
2591 | return -ENOMEM; | |
864a3ff6 | 2592 | NS_PRV_BUFTYPE(lb) = BUF_LG; |
098fde11 C |
2593 | skb_queue_tail(&card->lbpool.queue, lb); |
2594 | skb_reserve(lb, NS_SMBUFSIZE); | |
2595 | push_rxbufs(card, lb); | |
2596 | } | |
2597 | break; | |
2598 | ||
2599 | case NS_BUFTYPE_HUGE: | |
2600 | while (card->hbpool.count > card->hbnr.init) { | |
2601 | struct sk_buff *hb; | |
2602 | ||
2603 | spin_lock_irqsave(&card->int_lock, flags); | |
2604 | hb = skb_dequeue(&card->hbpool.queue); | |
2605 | card->hbpool.count--; | |
2606 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2607 | if (hb == NULL) | |
2608 | printk | |
2609 | ("nicstar%d: huge buffer count inconsistent.\n", | |
2610 | card->index); | |
2611 | else | |
2612 | dev_kfree_skb_any(hb); | |
2613 | ||
2614 | } | |
2615 | while (card->hbpool.count < card->hbnr.init) { | |
2616 | struct sk_buff *hb; | |
2617 | ||
2618 | hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); | |
2619 | if (hb == NULL) | |
2620 | return -ENOMEM; | |
864a3ff6 | 2621 | NS_PRV_BUFTYPE(hb) = BUF_NONE; |
098fde11 C |
2622 | spin_lock_irqsave(&card->int_lock, flags); |
2623 | skb_queue_tail(&card->hbpool.queue, hb); | |
2624 | card->hbpool.count++; | |
2625 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2626 | } | |
2627 | break; | |
2628 | ||
2629 | case NS_BUFTYPE_IOVEC: | |
2630 | while (card->iovpool.count > card->iovnr.init) { | |
2631 | struct sk_buff *iovb; | |
2632 | ||
2633 | spin_lock_irqsave(&card->int_lock, flags); | |
2634 | iovb = skb_dequeue(&card->iovpool.queue); | |
2635 | card->iovpool.count--; | |
2636 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2637 | if (iovb == NULL) | |
2638 | printk | |
2639 | ("nicstar%d: iovec buffer count inconsistent.\n", | |
2640 | card->index); | |
2641 | else | |
2642 | dev_kfree_skb_any(iovb); | |
2643 | ||
2644 | } | |
2645 | while (card->iovpool.count < card->iovnr.init) { | |
2646 | struct sk_buff *iovb; | |
2647 | ||
2648 | iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); | |
2649 | if (iovb == NULL) | |
2650 | return -ENOMEM; | |
864a3ff6 | 2651 | NS_PRV_BUFTYPE(iovb) = BUF_NONE; |
098fde11 C |
2652 | spin_lock_irqsave(&card->int_lock, flags); |
2653 | skb_queue_tail(&card->iovpool.queue, iovb); | |
2654 | card->iovpool.count++; | |
2655 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2656 | } | |
2657 | break; | |
2658 | ||
2659 | default: | |
2660 | return -EINVAL; | |
2661 | ||
2662 | } | |
2663 | return 0; | |
2664 | ||
2665 | default: | |
2666 | if (dev->phy && dev->phy->ioctl) { | |
2667 | return dev->phy->ioctl(dev, cmd, arg); | |
2668 | } else { | |
2669 | printk("nicstar%d: %s == NULL \n", card->index, | |
2670 | dev->phy ? "dev->phy->ioctl" : "dev->phy"); | |
2671 | return -ENOIOCTLCMD; | |
2672 | } | |
2673 | } | |
1da177e4 LT |
2674 | } |
2675 | ||
864a3ff6 | 2676 | #ifdef EXTRA_DEBUG |
098fde11 | 2677 | static void which_list(ns_dev * card, struct sk_buff *skb) |
1da177e4 | 2678 | { |
864a3ff6 | 2679 | printk("skb buf_type: 0x%08x\n", NS_PRV_BUFTYPE(skb)); |
1da177e4 | 2680 | } |
864a3ff6 | 2681 | #endif /* EXTRA_DEBUG */ |
1da177e4 | 2682 | |
e99e88a9 | 2683 | static void ns_poll(struct timer_list *unused) |
1da177e4 | 2684 | { |
098fde11 C |
2685 | int i; |
2686 | ns_dev *card; | |
2687 | unsigned long flags; | |
2688 | u32 stat_r, stat_w; | |
2689 | ||
2690 | PRINTK("nicstar: Entering ns_poll().\n"); | |
2691 | for (i = 0; i < num_cards; i++) { | |
2692 | card = cards[i]; | |
9a694c1d | 2693 | if (!spin_trylock_irqsave(&card->int_lock, flags)) { |
098fde11 C |
2694 | /* Probably it isn't worth spinning */ |
2695 | continue; | |
2696 | } | |
098fde11 C |
2697 | |
2698 | stat_w = 0; | |
2699 | stat_r = readl(card->membase + STAT); | |
2700 | if (stat_r & NS_STAT_TSIF) | |
2701 | stat_w |= NS_STAT_TSIF; | |
2702 | if (stat_r & NS_STAT_EOPDU) | |
2703 | stat_w |= NS_STAT_EOPDU; | |
2704 | ||
2705 | process_tsq(card); | |
2706 | process_rsq(card); | |
2707 | ||
2708 | writel(stat_w, card->membase + STAT); | |
2709 | spin_unlock_irqrestore(&card->int_lock, flags); | |
2710 | } | |
2711 | mod_timer(&ns_timer, jiffies + NS_POLL_PERIOD); | |
2712 | PRINTK("nicstar: Leaving ns_poll().\n"); | |
1da177e4 LT |
2713 | } |
2714 | ||
1da177e4 | 2715 | static void ns_phy_put(struct atm_dev *dev, unsigned char value, |
098fde11 | 2716 | unsigned long addr) |
1da177e4 | 2717 | { |
098fde11 C |
2718 | ns_dev *card; |
2719 | unsigned long flags; | |
2720 | ||
2721 | card = dev->dev_data; | |
2722 | spin_lock_irqsave(&card->res_lock, flags); | |
2723 | while (CMD_BUSY(card)) ; | |
864a3ff6 | 2724 | writel((u32) value, card->membase + DR0); |
098fde11 C |
2725 | writel(NS_CMD_WRITE_UTILITY | 0x00000200 | (addr & 0x000000FF), |
2726 | card->membase + CMD); | |
2727 | spin_unlock_irqrestore(&card->res_lock, flags); | |
1da177e4 LT |
2728 | } |
2729 | ||
1da177e4 LT |
2730 | static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr) |
2731 | { | |
098fde11 C |
2732 | ns_dev *card; |
2733 | unsigned long flags; | |
864a3ff6 | 2734 | u32 data; |
098fde11 C |
2735 | |
2736 | card = dev->dev_data; | |
2737 | spin_lock_irqsave(&card->res_lock, flags); | |
2738 | while (CMD_BUSY(card)) ; | |
2739 | writel(NS_CMD_READ_UTILITY | 0x00000200 | (addr & 0x000000FF), | |
2740 | card->membase + CMD); | |
2741 | while (CMD_BUSY(card)) ; | |
2742 | data = readl(card->membase + DR0) & 0x000000FF; | |
2743 | spin_unlock_irqrestore(&card->res_lock, flags); | |
2744 | return (unsigned char)data; | |
1da177e4 LT |
2745 | } |
2746 | ||
1da177e4 LT |
2747 | module_init(nicstar_init); |
2748 | module_exit(nicstar_cleanup); |