diff options
author | David Woodhouse <dwmw2@infradead.org> | 2008-12-22 23:09:02 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-12-26 04:26:11 -0500 |
commit | 9c54004ea717116a10886e254e26502ffb1136e9 (patch) | |
tree | 890ccda88965e0f6f6fa702237d5e3830834af60 /drivers/atm | |
parent | 236b87c29953a87a6817e96e311b0efd00e95dc7 (diff) |
atm: Driver for Solos PCI ADSL2+ card.
This adds basic support for the 'Solos' PCI ADSL2+ cards being developed
by Traverse Technologies and Xrio Ltd:
http://www.traverse.com.au/productview.php?product_id=116
Signed-off-by: Nathan Williams <nathan@traverse.com.au>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm')
-rw-r--r-- | drivers/atm/Kconfig | 6 | ||||
-rw-r--r-- | drivers/atm/Makefile | 1 | ||||
-rw-r--r-- | drivers/atm/solos-pci.c | 790 |
3 files changed, 797 insertions, 0 deletions
diff --git a/drivers/atm/Kconfig b/drivers/atm/Kconfig index f197a193633a..191b85e857e0 100644 --- a/drivers/atm/Kconfig +++ b/drivers/atm/Kconfig | |||
@@ -391,4 +391,10 @@ config ATM_HE_USE_SUNI | |||
391 | Support for the S/UNI-Ultra and S/UNI-622 found in the ForeRunner | 391 | Support for the S/UNI-Ultra and S/UNI-622 found in the ForeRunner |
392 | HE cards. This driver provides carrier detection some statistics. | 392 | HE cards. This driver provides carrier detection some statistics. |
393 | 393 | ||
394 | config ATM_SOLOS | ||
395 | tristate "Solos ADSL2+ PCI Multiport card driver" | ||
396 | depends on PCI | ||
397 | help | ||
398 | Support for the Solos multiport ADSL2+ card. | ||
399 | |||
394 | endif # ATM | 400 | endif # ATM |
diff --git a/drivers/atm/Makefile b/drivers/atm/Makefile index 0bfb31748ecf..62c3cc1075ae 100644 --- a/drivers/atm/Makefile +++ b/drivers/atm/Makefile | |||
@@ -12,6 +12,7 @@ obj-$(CONFIG_ATM_IA) += iphase.o suni.o | |||
12 | obj-$(CONFIG_ATM_FORE200E) += fore_200e.o | 12 | obj-$(CONFIG_ATM_FORE200E) += fore_200e.o |
13 | obj-$(CONFIG_ATM_ENI) += eni.o suni.o | 13 | obj-$(CONFIG_ATM_ENI) += eni.o suni.o |
14 | obj-$(CONFIG_ATM_IDT77252) += idt77252.o | 14 | obj-$(CONFIG_ATM_IDT77252) += idt77252.o |
15 | obj-$(CONFIG_ATM_SOLOS) += solos-pci.o | ||
15 | 16 | ||
16 | ifeq ($(CONFIG_ATM_NICSTAR_USE_SUNI),y) | 17 | ifeq ($(CONFIG_ATM_NICSTAR_USE_SUNI),y) |
17 | obj-$(CONFIG_ATM_NICSTAR) += suni.o | 18 | obj-$(CONFIG_ATM_NICSTAR) += suni.o |
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c new file mode 100644 index 000000000000..72fc0f799a64 --- /dev/null +++ b/drivers/atm/solos-pci.c | |||
@@ -0,0 +1,790 @@ | |||
1 | /* | ||
2 | * Driver for the Solos PCI ADSL2+ card, designed to support Linux by | ||
3 | * Traverse Technologies -- http://www.traverse.com.au/ | ||
4 | * Xrio Limited -- http://www.xrio.com/ | ||
5 | * | ||
6 | * | ||
7 | * Copyright © 2008 Traverse Technologies | ||
8 | * Copyright © 2008 Intel Corporation | ||
9 | * | ||
10 | * Authors: Nathan Williams <nathan@traverse.com.au> | ||
11 | * David Woodhouse <dwmw2@infradead.org> | ||
12 | * | ||
13 | * This program is free software; you can redistribute it and/or | ||
14 | * modify it under the terms of the GNU General Public License | ||
15 | * version 2, as published by the Free Software Foundation. | ||
16 | * | ||
17 | * This program is distributed in the hope that it will be useful, | ||
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
20 | * GNU General Public License for more details. | ||
21 | */ | ||
22 | |||
23 | #define DEBUG | ||
24 | #define VERBOSE_DEBUG | ||
25 | |||
26 | #include <linux/interrupt.h> | ||
27 | #include <linux/module.h> | ||
28 | #include <linux/kernel.h> | ||
29 | #include <linux/errno.h> | ||
30 | #include <linux/ioport.h> | ||
31 | #include <linux/types.h> | ||
32 | #include <linux/pci.h> | ||
33 | #include <linux/atm.h> | ||
34 | #include <linux/atmdev.h> | ||
35 | #include <linux/skbuff.h> | ||
36 | #include <linux/sysfs.h> | ||
37 | #include <linux/device.h> | ||
38 | #include <linux/kobject.h> | ||
39 | |||
40 | #define VERSION "0.04" | ||
41 | #define PTAG "solos-pci" | ||
42 | |||
43 | #define CONFIG_RAM_SIZE 128 | ||
44 | #define FLAGS_ADDR 0x7C | ||
45 | #define IRQ_EN_ADDR 0x78 | ||
46 | #define FPGA_VER 0x74 | ||
47 | #define IRQ_CLEAR 0x70 | ||
48 | #define BUG_FLAG 0x6C | ||
49 | |||
50 | #define DATA_RAM_SIZE 32768 | ||
51 | #define BUF_SIZE 4096 | ||
52 | |||
53 | #define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2) | ||
54 | #define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE) | ||
55 | |||
56 | static int debug = 0; | ||
57 | static int atmdebug = 0; | ||
58 | |||
59 | struct pkt_hdr { | ||
60 | __le16 size; | ||
61 | __le16 vpi; | ||
62 | __le16 vci; | ||
63 | __le16 type; | ||
64 | }; | ||
65 | |||
66 | #define PKT_DATA 0 | ||
67 | #define PKT_COMMAND 1 | ||
68 | #define PKT_POPEN 3 | ||
69 | #define PKT_PCLOSE 4 | ||
70 | |||
71 | struct solos_card { | ||
72 | void __iomem *config_regs; | ||
73 | void __iomem *buffers; | ||
74 | int nr_ports; | ||
75 | struct pci_dev *dev; | ||
76 | struct atm_dev *atmdev[4]; | ||
77 | struct tasklet_struct tlet; | ||
78 | spinlock_t tx_lock; | ||
79 | spinlock_t tx_queue_lock; | ||
80 | spinlock_t cli_queue_lock; | ||
81 | struct sk_buff_head tx_queue[4]; | ||
82 | struct sk_buff_head cli_queue[4]; | ||
83 | }; | ||
84 | |||
85 | #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data) | ||
86 | |||
87 | MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>"); | ||
88 | MODULE_DESCRIPTION("Solos PCI driver"); | ||
89 | MODULE_VERSION(VERSION); | ||
90 | MODULE_LICENSE("GPL"); | ||
91 | MODULE_PARM_DESC(debug, "Enable Loopback"); | ||
92 | MODULE_PARM_DESC(atmdebug, "Print ATM data"); | ||
93 | module_param(debug, int, 0444); | ||
94 | module_param(atmdebug, int, 0444); | ||
95 | |||
96 | static int opens; | ||
97 | |||
98 | static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, | ||
99 | struct atm_vcc *vcc); | ||
100 | static int fpga_tx(struct solos_card *); | ||
101 | static irqreturn_t solos_irq(int irq, void *dev_id); | ||
102 | static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci); | ||
103 | static int list_vccs(int vci); | ||
104 | static int atm_init(struct solos_card *); | ||
105 | static void atm_remove(struct solos_card *); | ||
106 | static int send_command(struct solos_card *card, int dev, const char *buf, size_t size); | ||
107 | static void solos_bh(unsigned long); | ||
108 | static int print_buffer(struct sk_buff *buf); | ||
109 | |||
110 | static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb) | ||
111 | { | ||
112 | if (vcc->pop) | ||
113 | vcc->pop(vcc, skb); | ||
114 | else | ||
115 | dev_kfree_skb_any(skb); | ||
116 | } | ||
117 | |||
118 | static ssize_t console_show(struct device *dev, struct device_attribute *attr, | ||
119 | char *buf) | ||
120 | { | ||
121 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | ||
122 | struct solos_card *card = atmdev->dev_data; | ||
123 | struct sk_buff *skb; | ||
124 | |||
125 | spin_lock(&card->cli_queue_lock); | ||
126 | skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]); | ||
127 | spin_unlock(&card->cli_queue_lock); | ||
128 | if(skb == NULL) | ||
129 | return sprintf(buf, "No data.\n"); | ||
130 | |||
131 | memcpy(buf, skb->data, skb->len); | ||
132 | dev_dbg(&card->dev->dev, "len: %d\n", skb->len); | ||
133 | |||
134 | kfree_skb(skb); | ||
135 | return skb->len; | ||
136 | } | ||
137 | |||
138 | static int send_command(struct solos_card *card, int dev, const char *buf, size_t size) | ||
139 | { | ||
140 | struct sk_buff *skb; | ||
141 | struct pkt_hdr *header; | ||
142 | |||
143 | // dev_dbg(&card->dev->dev, "size: %d\n", size); | ||
144 | |||
145 | if (size > (BUF_SIZE - sizeof(*header))) { | ||
146 | dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n"); | ||
147 | return 0; | ||
148 | } | ||
149 | skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC); | ||
150 | if (!skb) { | ||
151 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n"); | ||
152 | return 0; | ||
153 | } | ||
154 | |||
155 | header = (void *)skb_put(skb, sizeof(*header)); | ||
156 | |||
157 | header->size = cpu_to_le16(size); | ||
158 | header->vpi = cpu_to_le16(0); | ||
159 | header->vci = cpu_to_le16(0); | ||
160 | header->type = cpu_to_le16(PKT_COMMAND); | ||
161 | |||
162 | memcpy(skb_put(skb, size), buf, size); | ||
163 | |||
164 | fpga_queue(card, dev, skb, NULL); | ||
165 | |||
166 | return 0; | ||
167 | } | ||
168 | |||
169 | static ssize_t console_store(struct device *dev, struct device_attribute *attr, | ||
170 | const char *buf, size_t count) | ||
171 | { | ||
172 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | ||
173 | struct solos_card *card = atmdev->dev_data; | ||
174 | int err; | ||
175 | |||
176 | err = send_command(card, SOLOS_CHAN(atmdev), buf, count); | ||
177 | |||
178 | return err?:count; | ||
179 | } | ||
180 | |||
181 | static DEVICE_ATTR(console, 0644, console_show, console_store); | ||
182 | |||
183 | static irqreturn_t solos_irq(int irq, void *dev_id) | ||
184 | { | ||
185 | struct solos_card *card = dev_id; | ||
186 | int handled = 1; | ||
187 | |||
188 | //ACK IRQ | ||
189 | iowrite32(0, card->config_regs + IRQ_CLEAR); | ||
190 | //Disable IRQs from FPGA | ||
191 | iowrite32(0, card->config_regs + IRQ_EN_ADDR); | ||
192 | |||
193 | /* If we only do it when the device is open, we lose console | ||
194 | messages */ | ||
195 | if (1 || opens) | ||
196 | tasklet_schedule(&card->tlet); | ||
197 | |||
198 | //Enable IRQs from FPGA | ||
199 | iowrite32(1, card->config_regs + IRQ_EN_ADDR); | ||
200 | return IRQ_RETVAL(handled); | ||
201 | } | ||
202 | |||
203 | void solos_bh(unsigned long card_arg) | ||
204 | { | ||
205 | struct solos_card *card = (void *)card_arg; | ||
206 | int port; | ||
207 | uint32_t card_flags; | ||
208 | uint32_t tx_mask; | ||
209 | uint32_t rx_done = 0; | ||
210 | |||
211 | card_flags = ioread32(card->config_regs + FLAGS_ADDR); | ||
212 | |||
213 | /* The TX bits are set if the channel is busy; clear if not. We want to | ||
214 | invoke fpga_tx() unless _all_ the bits for active channels are set */ | ||
215 | tx_mask = (1 << card->nr_ports) - 1; | ||
216 | if ((card_flags & tx_mask) != tx_mask) | ||
217 | fpga_tx(card); | ||
218 | |||
219 | for (port = 0; port < card->nr_ports; port++) { | ||
220 | if (card_flags & (0x10 << port)) { | ||
221 | struct pkt_hdr header; | ||
222 | struct sk_buff *skb; | ||
223 | struct atm_vcc *vcc; | ||
224 | int size; | ||
225 | |||
226 | rx_done |= 0x10 << port; | ||
227 | |||
228 | memcpy_fromio(&header, RX_BUF(card, port), sizeof(header)); | ||
229 | |||
230 | size = le16_to_cpu(header.size); | ||
231 | |||
232 | skb = alloc_skb(size, GFP_ATOMIC); | ||
233 | if (!skb) { | ||
234 | if (net_ratelimit()) | ||
235 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n"); | ||
236 | continue; | ||
237 | } | ||
238 | |||
239 | memcpy_fromio(skb_put(skb, size), | ||
240 | RX_BUF(card, port) + sizeof(header), | ||
241 | size); | ||
242 | |||
243 | if (atmdebug) { | ||
244 | dev_info(&card->dev->dev, "Received: device %d\n", port); | ||
245 | dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n", | ||
246 | size, le16_to_cpu(header.vpi), | ||
247 | le16_to_cpu(header.vci)); | ||
248 | print_buffer(skb); | ||
249 | } | ||
250 | |||
251 | switch (le16_to_cpu(header.type)) { | ||
252 | case PKT_DATA: | ||
253 | vcc = find_vcc(card->atmdev[port], le16_to_cpu(header.vpi), | ||
254 | le16_to_cpu(header.vci)); | ||
255 | if (!vcc) { | ||
256 | if (net_ratelimit()) | ||
257 | dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n", | ||
258 | le16_to_cpu(header.vci), le16_to_cpu(header.vpi), | ||
259 | port); | ||
260 | continue; | ||
261 | } | ||
262 | atm_charge(vcc, skb->truesize); | ||
263 | vcc->push(vcc, skb); | ||
264 | atomic_inc(&vcc->stats->rx); | ||
265 | break; | ||
266 | |||
267 | case PKT_COMMAND: | ||
268 | default: /* FIXME: Not really, surely? */ | ||
269 | spin_lock(&card->cli_queue_lock); | ||
270 | if (skb_queue_len(&card->cli_queue[port]) > 10) { | ||
271 | if (net_ratelimit()) | ||
272 | dev_warn(&card->dev->dev, "Dropping console response on port %d\n", | ||
273 | port); | ||
274 | } else | ||
275 | skb_queue_tail(&card->cli_queue[port], skb); | ||
276 | spin_unlock(&card->cli_queue_lock); | ||
277 | break; | ||
278 | } | ||
279 | } | ||
280 | } | ||
281 | if (rx_done) | ||
282 | iowrite32(rx_done, card->config_regs + FLAGS_ADDR); | ||
283 | |||
284 | return; | ||
285 | } | ||
286 | |||
287 | static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci) | ||
288 | { | ||
289 | struct hlist_head *head; | ||
290 | struct atm_vcc *vcc = NULL; | ||
291 | struct hlist_node *node; | ||
292 | struct sock *s; | ||
293 | |||
294 | read_lock(&vcc_sklist_lock); | ||
295 | head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; | ||
296 | sk_for_each(s, node, head) { | ||
297 | vcc = atm_sk(s); | ||
298 | if (vcc->dev == dev && vcc->vci == vci && | ||
299 | vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE) | ||
300 | goto out; | ||
301 | } | ||
302 | vcc = NULL; | ||
303 | out: | ||
304 | read_unlock(&vcc_sklist_lock); | ||
305 | return vcc; | ||
306 | } | ||
307 | |||
308 | static int list_vccs(int vci) | ||
309 | { | ||
310 | struct hlist_head *head; | ||
311 | struct atm_vcc *vcc; | ||
312 | struct hlist_node *node; | ||
313 | struct sock *s; | ||
314 | int num_found = 0; | ||
315 | int i; | ||
316 | |||
317 | read_lock(&vcc_sklist_lock); | ||
318 | if (vci != 0){ | ||
319 | head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; | ||
320 | sk_for_each(s, node, head) { | ||
321 | num_found ++; | ||
322 | vcc = atm_sk(s); | ||
323 | printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", | ||
324 | vcc->dev->number, | ||
325 | vcc->vpi, | ||
326 | vcc->vci); | ||
327 | } | ||
328 | } else { | ||
329 | for(i=0; i<32; i++){ | ||
330 | head = &vcc_hash[i]; | ||
331 | sk_for_each(s, node, head) { | ||
332 | num_found ++; | ||
333 | vcc = atm_sk(s); | ||
334 | printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", | ||
335 | vcc->dev->number, | ||
336 | vcc->vpi, | ||
337 | vcc->vci); | ||
338 | } | ||
339 | } | ||
340 | } | ||
341 | read_unlock(&vcc_sklist_lock); | ||
342 | return num_found; | ||
343 | } | ||
344 | |||
345 | |||
346 | static int popen(struct atm_vcc *vcc) | ||
347 | { | ||
348 | struct solos_card *card = vcc->dev->dev_data; | ||
349 | struct sk_buff *skb; | ||
350 | struct pkt_hdr *header; | ||
351 | |||
352 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); | ||
353 | if (!skb && net_ratelimit()) { | ||
354 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n"); | ||
355 | return -ENOMEM; | ||
356 | } | ||
357 | header = (void *)skb_put(skb, sizeof(*header)); | ||
358 | |||
359 | header->size = cpu_to_le16(sizeof(*header)); | ||
360 | header->vpi = cpu_to_le16(vcc->vpi); | ||
361 | header->vci = cpu_to_le16(vcc->vci); | ||
362 | header->type = cpu_to_le16(PKT_POPEN); | ||
363 | |||
364 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); | ||
365 | |||
366 | // dev_dbg(&card->dev->dev, "Open for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev)); | ||
367 | set_bit(ATM_VF_ADDR, &vcc->flags); // accept the vpi / vci | ||
368 | set_bit(ATM_VF_READY, &vcc->flags); | ||
369 | list_vccs(0); | ||
370 | |||
371 | if (!opens) | ||
372 | iowrite32(1, card->config_regs + IRQ_EN_ADDR); | ||
373 | |||
374 | opens++; //count open PVCs | ||
375 | |||
376 | return 0; | ||
377 | } | ||
378 | |||
379 | static void pclose(struct atm_vcc *vcc) | ||
380 | { | ||
381 | struct solos_card *card = vcc->dev->dev_data; | ||
382 | struct sk_buff *skb; | ||
383 | struct pkt_hdr *header; | ||
384 | |||
385 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); | ||
386 | if (!skb) { | ||
387 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n"); | ||
388 | return; | ||
389 | } | ||
390 | header = (void *)skb_put(skb, sizeof(*header)); | ||
391 | |||
392 | header->size = cpu_to_le16(sizeof(*header)); | ||
393 | header->vpi = cpu_to_le16(vcc->vpi); | ||
394 | header->vci = cpu_to_le16(vcc->vci); | ||
395 | header->type = cpu_to_le16(PKT_PCLOSE); | ||
396 | |||
397 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); | ||
398 | |||
399 | // dev_dbg(&card->dev->dev, "Close for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev)); | ||
400 | if (!--opens) | ||
401 | iowrite32(0, card->config_regs + IRQ_EN_ADDR); | ||
402 | |||
403 | clear_bit(ATM_VF_ADDR, &vcc->flags); | ||
404 | clear_bit(ATM_VF_READY, &vcc->flags); | ||
405 | |||
406 | return; | ||
407 | } | ||
408 | |||
409 | static int print_buffer(struct sk_buff *buf) | ||
410 | { | ||
411 | int len,i; | ||
412 | char msg[500]; | ||
413 | char item[10]; | ||
414 | |||
415 | len = buf->len; | ||
416 | for (i = 0; i < len; i++){ | ||
417 | if(i % 8 == 0) | ||
418 | sprintf(msg, "%02X: ", i); | ||
419 | |||
420 | sprintf(item,"%02X ",*(buf->data + i)); | ||
421 | strcat(msg, item); | ||
422 | if(i % 8 == 7) { | ||
423 | sprintf(item, "\n"); | ||
424 | strcat(msg, item); | ||
425 | printk(KERN_DEBUG "%s", msg); | ||
426 | } | ||
427 | } | ||
428 | if (i % 8 != 0) { | ||
429 | sprintf(item, "\n"); | ||
430 | strcat(msg, item); | ||
431 | printk(KERN_DEBUG "%s", msg); | ||
432 | } | ||
433 | printk(KERN_DEBUG "\n"); | ||
434 | |||
435 | return 0; | ||
436 | } | ||
437 | |||
438 | static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, | ||
439 | struct atm_vcc *vcc) | ||
440 | { | ||
441 | int old_len; | ||
442 | |||
443 | *(void **)skb->cb = vcc; | ||
444 | |||
445 | spin_lock(&card->tx_queue_lock); | ||
446 | old_len = skb_queue_len(&card->tx_queue[port]); | ||
447 | skb_queue_tail(&card->tx_queue[port], skb); | ||
448 | spin_unlock(&card->tx_queue_lock); | ||
449 | |||
450 | /* If TX might need to be started, do so */ | ||
451 | if (!old_len) | ||
452 | fpga_tx(card); | ||
453 | } | ||
454 | |||
455 | static int fpga_tx(struct solos_card *card) | ||
456 | { | ||
457 | uint32_t tx_pending; | ||
458 | uint32_t tx_started = 0; | ||
459 | struct sk_buff *skb; | ||
460 | struct atm_vcc *vcc; | ||
461 | unsigned char port; | ||
462 | unsigned long flags; | ||
463 | |||
464 | spin_lock_irqsave(&card->tx_lock, flags); | ||
465 | |||
466 | tx_pending = ioread32(card->config_regs + FLAGS_ADDR); | ||
467 | |||
468 | dev_vdbg(&card->dev->dev, "TX Flags are %X\n", tx_pending); | ||
469 | |||
470 | for (port = 0; port < card->nr_ports; port++) { | ||
471 | if (!(tx_pending & (1 << port))) { | ||
472 | |||
473 | spin_lock(&card->tx_queue_lock); | ||
474 | skb = skb_dequeue(&card->tx_queue[port]); | ||
475 | spin_unlock(&card->tx_queue_lock); | ||
476 | |||
477 | if (!skb) | ||
478 | continue; | ||
479 | |||
480 | if (atmdebug) { | ||
481 | dev_info(&card->dev->dev, "Transmitted: port %d\n", | ||
482 | port); | ||
483 | print_buffer(skb); | ||
484 | } | ||
485 | memcpy_toio(TX_BUF(card, port), skb->data, skb->len); | ||
486 | |||
487 | vcc = *(void **)skb->cb; | ||
488 | |||
489 | if (vcc) { | ||
490 | atomic_inc(&vcc->stats->tx); | ||
491 | solos_pop(vcc, skb); | ||
492 | } else | ||
493 | dev_kfree_skb_irq(skb); | ||
494 | |||
495 | tx_started |= 1 << port; //Set TX full flag | ||
496 | } | ||
497 | } | ||
498 | if (tx_started) | ||
499 | iowrite32(tx_started, card->config_regs + FLAGS_ADDR); | ||
500 | |||
501 | spin_unlock_irqrestore(&card->tx_lock, flags); | ||
502 | return 0; | ||
503 | } | ||
504 | |||
505 | static int psend(struct atm_vcc *vcc, struct sk_buff *skb) | ||
506 | { | ||
507 | struct solos_card *card = vcc->dev->dev_data; | ||
508 | struct sk_buff *skb2 = NULL; | ||
509 | struct pkt_hdr *header; | ||
510 | |||
511 | //dev_dbg(&card->dev->dev, "psend called.\n"); | ||
512 | //dev_dbg(&card->dev->dev, "dev,vpi,vci = %d,%d,%d\n",SOLOS_CHAN(vcc->dev),vcc->vpi,vcc->vci); | ||
513 | |||
514 | if (debug) { | ||
515 | skb2 = atm_alloc_charge(vcc, skb->len, GFP_ATOMIC); | ||
516 | if (skb2) { | ||
517 | memcpy(skb2->data, skb->data, skb->len); | ||
518 | skb_put(skb2, skb->len); | ||
519 | vcc->push(vcc, skb2); | ||
520 | atomic_inc(&vcc->stats->rx); | ||
521 | } | ||
522 | atomic_inc(&vcc->stats->tx); | ||
523 | solos_pop(vcc, skb); | ||
524 | return 0; | ||
525 | } | ||
526 | |||
527 | if (skb->len > (BUF_SIZE - sizeof(*header))) { | ||
528 | dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n"); | ||
529 | solos_pop(vcc, skb); | ||
530 | return 0; | ||
531 | } | ||
532 | |||
533 | if (!skb_clone_writable(skb, sizeof(*header))) { | ||
534 | int expand_by = 0; | ||
535 | int ret; | ||
536 | |||
537 | if (skb_headroom(skb) < sizeof(*header)) | ||
538 | expand_by = sizeof(*header) - skb_headroom(skb); | ||
539 | |||
540 | ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC); | ||
541 | if (ret) { | ||
542 | solos_pop(vcc, skb); | ||
543 | return ret; | ||
544 | } | ||
545 | } | ||
546 | |||
547 | header = (void *)skb_push(skb, sizeof(*header)); | ||
548 | |||
549 | header->size = cpu_to_le16(skb->len); | ||
550 | header->vpi = cpu_to_le16(vcc->vpi); | ||
551 | header->vci = cpu_to_le16(vcc->vci); | ||
552 | header->type = cpu_to_le16(PKT_DATA); | ||
553 | |||
554 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc); | ||
555 | |||
556 | return 0; | ||
557 | } | ||
558 | |||
559 | static struct atmdev_ops fpga_ops = { | ||
560 | .open = popen, | ||
561 | .close = pclose, | ||
562 | .ioctl = NULL, | ||
563 | .getsockopt = NULL, | ||
564 | .setsockopt = NULL, | ||
565 | .send = psend, | ||
566 | .send_oam = NULL, | ||
567 | .phy_put = NULL, | ||
568 | .phy_get = NULL, | ||
569 | .change_qos = NULL, | ||
570 | .proc_read = NULL, | ||
571 | .owner = THIS_MODULE | ||
572 | }; | ||
573 | |||
574 | static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) | ||
575 | { | ||
576 | int err, i; | ||
577 | uint16_t fpga_ver; | ||
578 | uint8_t major_ver, minor_ver; | ||
579 | uint32_t data32; | ||
580 | struct solos_card *card; | ||
581 | |||
582 | if (debug) | ||
583 | return 0; | ||
584 | |||
585 | card = kzalloc(sizeof(*card), GFP_KERNEL); | ||
586 | if (!card) | ||
587 | return -ENOMEM; | ||
588 | |||
589 | card->dev = dev; | ||
590 | |||
591 | err = pci_enable_device(dev); | ||
592 | if (err) { | ||
593 | dev_warn(&dev->dev, "Failed to enable PCI device\n"); | ||
594 | goto out; | ||
595 | } | ||
596 | |||
597 | err = pci_request_regions(dev, "solos"); | ||
598 | if (err) { | ||
599 | dev_warn(&dev->dev, "Failed to request regions\n"); | ||
600 | goto out; | ||
601 | } | ||
602 | |||
603 | card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE); | ||
604 | if (!card->config_regs) { | ||
605 | dev_warn(&dev->dev, "Failed to ioremap config registers\n"); | ||
606 | goto out_release_regions; | ||
607 | } | ||
608 | card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE); | ||
609 | if (!card->buffers) { | ||
610 | dev_warn(&dev->dev, "Failed to ioremap data buffers\n"); | ||
611 | goto out_unmap_config; | ||
612 | } | ||
613 | |||
614 | // for(i=0;i<64 ;i+=4){ | ||
615 | // data32=ioread32(card->buffers + i); | ||
616 | // dev_dbg(&card->dev->dev, "%08lX\n",(unsigned long)data32); | ||
617 | // } | ||
618 | |||
619 | //Fill Config Mem with zeros | ||
620 | for(i = 0; i < 128; i += 4) | ||
621 | iowrite32(0, card->config_regs + i); | ||
622 | |||
623 | //Set RX empty flags | ||
624 | iowrite32(0xF0, card->config_regs + FLAGS_ADDR); | ||
625 | |||
626 | data32 = ioread32(card->config_regs + FPGA_VER); | ||
627 | fpga_ver = (data32 & 0x0000FFFF); | ||
628 | major_ver = ((data32 & 0xFF000000) >> 24); | ||
629 | minor_ver = ((data32 & 0x00FF0000) >> 16); | ||
630 | dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n", | ||
631 | major_ver, minor_ver, fpga_ver); | ||
632 | |||
633 | card->nr_ports = 2; /* FIXME: Detect daughterboard */ | ||
634 | |||
635 | err = atm_init(card); | ||
636 | if (err) | ||
637 | goto out_unmap_both; | ||
638 | |||
639 | pci_set_drvdata(dev, card); | ||
640 | tasklet_init(&card->tlet, solos_bh, (unsigned long)card); | ||
641 | spin_lock_init(&card->tx_lock); | ||
642 | spin_lock_init(&card->tx_queue_lock); | ||
643 | spin_lock_init(&card->cli_queue_lock); | ||
644 | /* | ||
645 | // Set Loopback mode | ||
646 | data32 = 0x00010000; | ||
647 | iowrite32(data32,card->config_regs + FLAGS_ADDR); | ||
648 | */ | ||
649 | /* | ||
650 | // Fill Buffers with zeros | ||
651 | for (i = 0; i < BUF_SIZE * 8; i += 4) | ||
652 | iowrite32(0, card->buffers + i); | ||
653 | */ | ||
654 | /* | ||
655 | for(i = 0; i < (BUF_SIZE * 1); i += 4) | ||
656 | iowrite32(0x12345678, card->buffers + i + (0*BUF_SIZE)); | ||
657 | for(i = 0; i < (BUF_SIZE * 1); i += 4) | ||
658 | iowrite32(0xabcdef98, card->buffers + i + (1*BUF_SIZE)); | ||
659 | |||
660 | // Read Config Memory | ||
661 | printk(KERN_DEBUG "Reading Config MEM\n"); | ||
662 | i = 0; | ||
663 | for(i = 0; i < 16; i++) { | ||
664 | data32=ioread32(card->buffers + i*(BUF_SIZE/2)); | ||
665 | printk(KERN_ALERT "Addr: %lX Data: %08lX\n", | ||
666 | (unsigned long)(addr_start + i*(BUF_SIZE/2)), | ||
667 | (unsigned long)data32); | ||
668 | } | ||
669 | */ | ||
670 | //dev_dbg(&card->dev->dev, "Requesting IRQ: %d\n",dev->irq); | ||
671 | err = request_irq(dev->irq, solos_irq, IRQF_DISABLED|IRQF_SHARED, | ||
672 | "solos-pci", card); | ||
673 | if (err) | ||
674 | dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq); | ||
675 | |||
676 | // Enable IRQs | ||
677 | iowrite32(1, card->config_regs + IRQ_EN_ADDR); | ||
678 | |||
679 | return 0; | ||
680 | |||
681 | out_unmap_both: | ||
682 | pci_iounmap(dev, card->config_regs); | ||
683 | out_unmap_config: | ||
684 | pci_iounmap(dev, card->buffers); | ||
685 | out_release_regions: | ||
686 | pci_release_regions(dev); | ||
687 | out: | ||
688 | return err; | ||
689 | } | ||
690 | |||
691 | static int atm_init(struct solos_card *card) | ||
692 | { | ||
693 | int i; | ||
694 | |||
695 | opens = 0; | ||
696 | |||
697 | for (i = 0; i < card->nr_ports; i++) { | ||
698 | skb_queue_head_init(&card->tx_queue[i]); | ||
699 | skb_queue_head_init(&card->cli_queue[i]); | ||
700 | |||
701 | card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL); | ||
702 | if (!card->atmdev[i]) { | ||
703 | dev_err(&card->dev->dev, "Could not register ATM device %d\n", i); | ||
704 | atm_remove(card); | ||
705 | return -ENODEV; | ||
706 | } | ||
707 | if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console)) | ||
708 | dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i); | ||
709 | |||
710 | dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number); | ||
711 | |||
712 | card->atmdev[i]->ci_range.vpi_bits = 8; | ||
713 | card->atmdev[i]->ci_range.vci_bits = 16; | ||
714 | card->atmdev[i]->dev_data = card; | ||
715 | card->atmdev[i]->phy_data = (void *)(unsigned long)i; | ||
716 | } | ||
717 | return 0; | ||
718 | } | ||
719 | |||
720 | static void atm_remove(struct solos_card *card) | ||
721 | { | ||
722 | int i; | ||
723 | |||
724 | for (i = 0; i < card->nr_ports; i++) { | ||
725 | if (card->atmdev[i]) { | ||
726 | dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number); | ||
727 | atm_dev_deregister(card->atmdev[i]); | ||
728 | } | ||
729 | } | ||
730 | } | ||
731 | |||
732 | static void fpga_remove(struct pci_dev *dev) | ||
733 | { | ||
734 | struct solos_card *card = pci_get_drvdata(dev); | ||
735 | |||
736 | if (debug) | ||
737 | return; | ||
738 | |||
739 | atm_remove(card); | ||
740 | |||
741 | dev_vdbg(&dev->dev, "Freeing IRQ\n"); | ||
742 | // Disable IRQs from FPGA | ||
743 | iowrite32(0, card->config_regs + IRQ_EN_ADDR); | ||
744 | free_irq(dev->irq, card); | ||
745 | tasklet_kill(&card->tlet); | ||
746 | |||
747 | // iowrite32(0x01,pciregs); | ||
748 | dev_vdbg(&dev->dev, "Unmapping PCI resource\n"); | ||
749 | pci_iounmap(dev, card->buffers); | ||
750 | pci_iounmap(dev, card->config_regs); | ||
751 | |||
752 | dev_vdbg(&dev->dev, "Releasing PCI Region\n"); | ||
753 | pci_release_regions(dev); | ||
754 | pci_disable_device(dev); | ||
755 | |||
756 | pci_set_drvdata(dev, NULL); | ||
757 | kfree(card); | ||
758 | // dev_dbg(&card->dev->dev, "fpga_remove\n"); | ||
759 | return; | ||
760 | } | ||
761 | |||
762 | static struct pci_device_id fpga_pci_tbl[] __devinitdata = { | ||
763 | { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | ||
764 | { 0, } | ||
765 | }; | ||
766 | |||
767 | MODULE_DEVICE_TABLE(pci,fpga_pci_tbl); | ||
768 | |||
769 | static struct pci_driver fpga_driver = { | ||
770 | .name = "solos", | ||
771 | .id_table = fpga_pci_tbl, | ||
772 | .probe = fpga_probe, | ||
773 | .remove = fpga_remove, | ||
774 | }; | ||
775 | |||
776 | |||
777 | static int __init solos_pci_init(void) | ||
778 | { | ||
779 | printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION); | ||
780 | return pci_register_driver(&fpga_driver); | ||
781 | } | ||
782 | |||
783 | static void __exit solos_pci_exit(void) | ||
784 | { | ||
785 | pci_unregister_driver(&fpga_driver); | ||
786 | printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION); | ||
787 | } | ||
788 | |||
789 | module_init(solos_pci_init); | ||
790 | module_exit(solos_pci_exit); | ||