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/
7 * Copyright © 2008 Traverse Technologies
8 * Copyright © 2008 Intel Corporation
10 * Authors: Nathan Williams <nathan@traverse.com.au>
11 * David Woodhouse <dwmw2@infradead.org>
12 * Treker Chen <treker@xrio.com>
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * version 2, as published by the Free Software Foundation.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
27 #include <linux/interrupt.h>
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/errno.h>
31 #include <linux/ioport.h>
32 #include <linux/types.h>
33 #include <linux/pci.h>
34 #include <linux/atm.h>
35 #include <linux/atmdev.h>
36 #include <linux/skbuff.h>
37 #include <linux/sysfs.h>
38 #include <linux/device.h>
39 #include <linux/kobject.h>
40 #include <linux/firmware.h>
41 #include <linux/ctype.h>
42 #include <linux/swab.h>
44 #define VERSION "0.07"
45 #define PTAG "solos-pci"
47 #define CONFIG_RAM_SIZE 128
48 #define FLAGS_ADDR 0x7C
49 #define IRQ_EN_ADDR 0x78
51 #define IRQ_CLEAR 0x70
52 #define WRITE_FLASH 0x6C
54 #define FLASH_BLOCK 0x64
55 #define FLASH_BUSY 0x60
56 #define FPGA_MODE 0x5C
57 #define FLASH_MODE 0x58
58 #define TX_DMA_ADDR(port) (0x40 + (4 * (port)))
59 #define RX_DMA_ADDR(port) (0x30 + (4 * (port)))
61 #define DATA_RAM_SIZE 32768
63 #define FPGA_PAGE 528 /* FPGA flash page size*/
64 #define SOLOS_PAGE 512 /* Solos flash page size*/
65 #define FPGA_BLOCK (FPGA_PAGE * 8) /* FPGA flash block size*/
66 #define SOLOS_BLOCK (SOLOS_PAGE * 8) /* Solos flash block size*/
68 #define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2)
69 #define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE)
71 #define RX_DMA_SIZE 2048
74 static int atmdebug = 0;
75 static int firmware_upgrade = 0;
76 static int fpga_upgrade = 0;
91 #define SKB_CB(skb) ((struct solos_skb_cb *)skb->cb)
100 void __iomem *config_regs;
101 void __iomem *buffers;
104 struct atm_dev *atmdev[4];
105 struct tasklet_struct tlet;
107 spinlock_t tx_queue_lock;
108 spinlock_t cli_queue_lock;
109 spinlock_t param_queue_lock;
110 struct list_head param_queue;
111 struct sk_buff_head tx_queue[4];
112 struct sk_buff_head cli_queue[4];
113 struct sk_buff *tx_skb[4];
114 struct sk_buff *rx_skb[4];
115 wait_queue_head_t param_wq;
116 wait_queue_head_t fw_wq;
122 struct list_head list;
125 struct sk_buff *response;
126 wait_queue_head_t wq;
129 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
131 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
132 MODULE_DESCRIPTION("Solos PCI driver");
133 MODULE_VERSION(VERSION);
134 MODULE_LICENSE("GPL");
135 MODULE_PARM_DESC(debug, "Enable Loopback");
136 MODULE_PARM_DESC(atmdebug, "Print ATM data");
137 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
138 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
139 module_param(debug, int, 0444);
140 module_param(atmdebug, int, 0644);
141 module_param(firmware_upgrade, int, 0444);
142 module_param(fpga_upgrade, int, 0444);
144 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
145 struct atm_vcc *vcc);
146 static int fpga_tx(struct solos_card *);
147 static irqreturn_t solos_irq(int irq, void *dev_id);
148 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
149 static int list_vccs(int vci);
150 static void release_vccs(struct atm_dev *dev);
151 static int atm_init(struct solos_card *);
152 static void atm_remove(struct solos_card *);
153 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
154 static void solos_bh(unsigned long);
155 static int print_buffer(struct sk_buff *buf);
157 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
162 dev_kfree_skb_any(skb);
165 static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
168 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
169 struct solos_card *card = atmdev->dev_data;
170 struct solos_param prm;
172 struct pkt_hdr *header;
175 buflen = strlen(attr->attr.name) + 10;
177 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
179 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
183 header = (void *)skb_put(skb, sizeof(*header));
185 buflen = snprintf((void *)&header[1], buflen - 1,
186 "L%05d\n%s\n", current->pid, attr->attr.name);
187 skb_put(skb, buflen);
189 header->size = cpu_to_le16(buflen);
190 header->vpi = cpu_to_le16(0);
191 header->vci = cpu_to_le16(0);
192 header->type = cpu_to_le16(PKT_COMMAND);
194 prm.pid = current->pid;
196 prm.port = SOLOS_CHAN(atmdev);
198 spin_lock_irq(&card->param_queue_lock);
199 list_add(&prm.list, &card->param_queue);
200 spin_unlock_irq(&card->param_queue_lock);
202 fpga_queue(card, prm.port, skb, NULL);
204 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
206 spin_lock_irq(&card->param_queue_lock);
208 spin_unlock_irq(&card->param_queue_lock);
213 buflen = prm.response->len;
214 memcpy(buf, prm.response->data, buflen);
215 kfree_skb(prm.response);
220 static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
221 const char *buf, size_t count)
223 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
224 struct solos_card *card = atmdev->dev_data;
225 struct solos_param prm;
227 struct pkt_hdr *header;
231 buflen = strlen(attr->attr.name) + 11 + count;
233 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
235 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
239 header = (void *)skb_put(skb, sizeof(*header));
241 buflen = snprintf((void *)&header[1], buflen - 1,
242 "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
244 skb_put(skb, buflen);
245 header->size = cpu_to_le16(buflen);
246 header->vpi = cpu_to_le16(0);
247 header->vci = cpu_to_le16(0);
248 header->type = cpu_to_le16(PKT_COMMAND);
250 prm.pid = current->pid;
252 prm.port = SOLOS_CHAN(atmdev);
254 spin_lock_irq(&card->param_queue_lock);
255 list_add(&prm.list, &card->param_queue);
256 spin_unlock_irq(&card->param_queue_lock);
258 fpga_queue(card, prm.port, skb, NULL);
260 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
262 spin_lock_irq(&card->param_queue_lock);
264 spin_unlock_irq(&card->param_queue_lock);
273 /* Sometimes it has a newline, sometimes it doesn't. */
274 if (skb->data[buflen - 1] == '\n')
277 if (buflen == 2 && !strncmp(skb->data, "OK", 2))
279 else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
282 /* We know we have enough space allocated for this; we allocated
284 skb->data[buflen] = 0;
286 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
295 static char *next_string(struct sk_buff *skb)
298 char *this = skb->data;
300 while (i < skb->len) {
301 if (this[i] == '\n') {
311 * Status packet has fields separated by \n, starting with a version number
312 * for the information therein. Fields are....
315 * TxBitRate (version >= 1)
316 * RxBitRate (version >= 1)
317 * State (version >= 1)
319 static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
321 char *str, *end, *state_str;
322 int ver, rate_up, rate_down, state, snr, attn;
324 if (!card->atmdev[port])
327 str = next_string(skb);
331 ver = simple_strtol(str, NULL, 10);
333 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
338 str = next_string(skb);
339 rate_up = simple_strtol(str, &end, 10);
343 str = next_string(skb);
344 rate_down = simple_strtol(str, &end, 10);
348 state_str = next_string(skb);
349 if (!strcmp(state_str, "Showtime"))
350 state = ATM_PHY_SIG_FOUND;
352 state = ATM_PHY_SIG_LOST;
353 release_vccs(card->atmdev[port]);
356 str = next_string(skb);
357 snr = simple_strtol(str, &end, 10);
361 str = next_string(skb);
362 attn = simple_strtol(str, &end, 10);
366 if (state == ATM_PHY_SIG_LOST && !rate_up && !rate_down)
367 dev_info(&card->dev->dev, "Port %d ATM state: %s\n",
370 dev_info(&card->dev->dev, "Port %d ATM state: %s (%d/%d kb/s, SNR %ddB, Attn %ddB)\n",
371 port, state_str, rate_up/1000, rate_down/1000,
374 card->atmdev[port]->link_rate = rate_down;
375 card->atmdev[port]->signal = state;
380 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
382 struct solos_param *prm;
390 if (skb->data[0] != 'L' || !isdigit(skb->data[1]) ||
391 !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
392 !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
393 skb->data[6] != '\n')
396 cmdpid = simple_strtol(&skb->data[1], NULL, 10);
398 spin_lock_irqsave(&card->param_queue_lock, flags);
399 list_for_each_entry(prm, &card->param_queue, list) {
400 if (prm->port == port && prm->pid == cmdpid) {
403 wake_up(&card->param_wq);
408 spin_unlock_irqrestore(&card->param_queue_lock, flags);
412 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
415 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
416 struct solos_card *card = atmdev->dev_data;
419 spin_lock(&card->cli_queue_lock);
420 skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
421 spin_unlock(&card->cli_queue_lock);
423 return sprintf(buf, "No data.\n");
425 memcpy(buf, skb->data, skb->len);
426 dev_dbg(&card->dev->dev, "len: %d\n", skb->len);
432 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
435 struct pkt_hdr *header;
437 // dev_dbg(&card->dev->dev, "size: %d\n", size);
439 if (size > (BUF_SIZE - sizeof(*header))) {
440 dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n");
443 skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
445 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
449 header = (void *)skb_put(skb, sizeof(*header));
451 header->size = cpu_to_le16(size);
452 header->vpi = cpu_to_le16(0);
453 header->vci = cpu_to_le16(0);
454 header->type = cpu_to_le16(PKT_COMMAND);
456 memcpy(skb_put(skb, size), buf, size);
458 fpga_queue(card, dev, skb, NULL);
463 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
464 const char *buf, size_t count)
466 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
467 struct solos_card *card = atmdev->dev_data;
470 err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
475 static DEVICE_ATTR(console, 0644, console_show, console_store);
478 #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
479 #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
481 #include "solos-attrlist.c"
486 #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
487 #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
489 static struct attribute *solos_attrs[] = {
490 #include "solos-attrlist.c"
494 static struct attribute_group solos_attr_group = {
495 .attrs = solos_attrs,
496 .name = "parameters",
499 static int flash_upgrade(struct solos_card *card, int chip)
501 const struct firmware *fw;
509 fw_name = "solos-FPGA.bin";
510 blocksize = FPGA_BLOCK;
512 fw_name = "solos-Firmware.bin";
513 blocksize = SOLOS_BLOCK;
516 if (request_firmware(&fw, fw_name, &card->dev->dev))
519 dev_info(&card->dev->dev, "Flash upgrade starting\n");
521 numblocks = fw->size / blocksize;
522 dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
523 dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
525 dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
526 iowrite32(1, card->config_regs + FPGA_MODE);
527 data32 = ioread32(card->config_regs + FPGA_MODE);
529 /* Set mode to Chip Erase */
530 dev_info(&card->dev->dev, "Set FPGA Flash mode to %s Chip Erase\n",
531 chip?"Solos":"FPGA");
532 iowrite32((chip * 2), card->config_regs + FLASH_MODE);
535 iowrite32(1, card->config_regs + WRITE_FLASH);
536 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
538 for (offset = 0; offset < fw->size; offset += blocksize) {
541 /* Clear write flag */
542 iowrite32(0, card->config_regs + WRITE_FLASH);
544 /* Set mode to Block Write */
545 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
546 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
548 /* Copy block to buffer, swapping each 16 bits */
549 for(i = 0; i < blocksize; i += 4) {
550 uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
551 iowrite32(word, RX_BUF(card, 3) + i);
554 /* Specify block number and then trigger flash write */
555 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
556 iowrite32(1, card->config_regs + WRITE_FLASH);
557 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
560 release_firmware(fw);
561 iowrite32(0, card->config_regs + WRITE_FLASH);
562 iowrite32(0, card->config_regs + FPGA_MODE);
563 iowrite32(0, card->config_regs + FLASH_MODE);
564 dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
568 static irqreturn_t solos_irq(int irq, void *dev_id)
570 struct solos_card *card = dev_id;
574 iowrite32(0, card->config_regs + IRQ_CLEAR);
575 //Disable IRQs from FPGA
576 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
579 tasklet_schedule(&card->tlet);
581 wake_up(&card->fw_wq);
583 //Enable IRQs from FPGA
584 iowrite32(1, card->config_regs + IRQ_EN_ADDR);
585 return IRQ_RETVAL(handled);
588 void solos_bh(unsigned long card_arg)
590 struct solos_card *card = (void *)card_arg;
594 uint32_t rx_done = 0;
596 card_flags = ioread32(card->config_regs + FLAGS_ADDR);
598 /* The TX bits are set if the channel is busy; clear if not. We want to
599 invoke fpga_tx() unless _all_ the bits for active channels are set */
600 tx_mask = (1 << card->nr_ports) - 1;
601 if ((card_flags & tx_mask) != tx_mask)
604 for (port = 0; port < card->nr_ports; port++) {
605 if (card_flags & (0x10 << port)) {
606 struct pkt_hdr _hdr, *header;
611 if (card->using_dma) {
612 skb = card->rx_skb[port];
613 card->rx_skb[port] = NULL;
615 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
616 RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
618 header = (void *)skb->data;
619 size = le16_to_cpu(header->size);
620 skb_put(skb, size + sizeof(*header));
621 skb_pull(skb, sizeof(*header));
625 rx_done |= 0x10 << port;
627 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
629 size = le16_to_cpu(header->size);
631 skb = alloc_skb(size + 1, GFP_ATOMIC);
634 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
638 memcpy_fromio(skb_put(skb, size),
639 RX_BUF(card, port) + sizeof(*header),
643 dev_info(&card->dev->dev, "Received: device %d\n", port);
644 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
645 size, le16_to_cpu(header->vpi),
646 le16_to_cpu(header->vci));
650 switch (le16_to_cpu(header->type)) {
652 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
653 le16_to_cpu(header->vci));
656 dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n",
657 le16_to_cpu(header->vci), le16_to_cpu(header->vpi),
661 atm_charge(vcc, skb->truesize);
663 atomic_inc(&vcc->stats->rx);
667 process_status(card, port, skb);
668 dev_kfree_skb_any(skb);
672 default: /* FIXME: Not really, surely? */
673 if (process_command(card, port, skb))
675 spin_lock(&card->cli_queue_lock);
676 if (skb_queue_len(&card->cli_queue[port]) > 10) {
678 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
680 dev_kfree_skb_any(skb);
682 skb_queue_tail(&card->cli_queue[port], skb);
683 spin_unlock(&card->cli_queue_lock);
687 /* Allocate RX skbs for any ports which need them */
688 if (card->using_dma && card->atmdev[port] &&
689 !card->rx_skb[port]) {
690 struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
692 SKB_CB(skb)->dma_addr =
693 pci_map_single(card->dev, skb->data,
694 RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
695 iowrite32(SKB_CB(skb)->dma_addr,
696 card->config_regs + RX_DMA_ADDR(port));
697 card->rx_skb[port] = skb;
700 dev_warn(&card->dev->dev, "Failed to allocate RX skb");
702 /* We'll have to try again later */
703 tasklet_schedule(&card->tlet);
708 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
713 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
715 struct hlist_head *head;
716 struct atm_vcc *vcc = NULL;
717 struct hlist_node *node;
720 read_lock(&vcc_sklist_lock);
721 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
722 sk_for_each(s, node, head) {
724 if (vcc->dev == dev && vcc->vci == vci &&
725 vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE)
730 read_unlock(&vcc_sklist_lock);
734 static int list_vccs(int vci)
736 struct hlist_head *head;
738 struct hlist_node *node;
743 read_lock(&vcc_sklist_lock);
745 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
746 sk_for_each(s, node, head) {
749 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
755 for(i = 0; i < VCC_HTABLE_SIZE; i++){
757 sk_for_each(s, node, head) {
760 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
767 read_unlock(&vcc_sklist_lock);
771 static void release_vccs(struct atm_dev *dev)
775 write_lock_irq(&vcc_sklist_lock);
776 for (i = 0; i < VCC_HTABLE_SIZE; i++) {
777 struct hlist_head *head = &vcc_hash[i];
778 struct hlist_node *node, *tmp;
782 sk_for_each_safe(s, node, tmp, head) {
784 if (vcc->dev == dev) {
785 vcc_release_async(vcc, -EPIPE);
790 write_unlock_irq(&vcc_sklist_lock);
794 static int popen(struct atm_vcc *vcc)
796 struct solos_card *card = vcc->dev->dev_data;
798 struct pkt_hdr *header;
800 if (vcc->qos.aal != ATM_AAL5) {
801 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
806 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
807 if (!skb && net_ratelimit()) {
808 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
811 header = (void *)skb_put(skb, sizeof(*header));
813 header->size = cpu_to_le16(0);
814 header->vpi = cpu_to_le16(vcc->vpi);
815 header->vci = cpu_to_le16(vcc->vci);
816 header->type = cpu_to_le16(PKT_POPEN);
818 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
820 // dev_dbg(&card->dev->dev, "Open for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
821 set_bit(ATM_VF_ADDR, &vcc->flags); // accept the vpi / vci
822 set_bit(ATM_VF_READY, &vcc->flags);
829 static void pclose(struct atm_vcc *vcc)
831 struct solos_card *card = vcc->dev->dev_data;
833 struct pkt_hdr *header;
835 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
837 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
840 header = (void *)skb_put(skb, sizeof(*header));
842 header->size = cpu_to_le16(0);
843 header->vpi = cpu_to_le16(vcc->vpi);
844 header->vci = cpu_to_le16(vcc->vci);
845 header->type = cpu_to_le16(PKT_PCLOSE);
847 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
849 // dev_dbg(&card->dev->dev, "Close for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
851 clear_bit(ATM_VF_ADDR, &vcc->flags);
852 clear_bit(ATM_VF_READY, &vcc->flags);
857 static int print_buffer(struct sk_buff *buf)
864 for (i = 0; i < len; i++){
866 sprintf(msg, "%02X: ", i);
868 sprintf(item,"%02X ",*(buf->data + i));
873 printk(KERN_DEBUG "%s", msg);
879 printk(KERN_DEBUG "%s", msg);
881 printk(KERN_DEBUG "\n");
886 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
891 SKB_CB(skb)->vcc = vcc;
893 spin_lock(&card->tx_queue_lock);
894 old_len = skb_queue_len(&card->tx_queue[port]);
895 skb_queue_tail(&card->tx_queue[port], skb);
896 spin_unlock(&card->tx_queue_lock);
898 /* If TX might need to be started, do so */
903 static int fpga_tx(struct solos_card *card)
906 uint32_t tx_started = 0;
912 spin_lock_irqsave(&card->tx_lock, flags);
914 tx_pending = ioread32(card->config_regs + FLAGS_ADDR);
916 dev_vdbg(&card->dev->dev, "TX Flags are %X\n", tx_pending);
918 for (port = 0; port < card->nr_ports; port++) {
919 if (card->atmdev[port] && !(tx_pending & (1 << port))) {
920 struct sk_buff *oldskb = card->tx_skb[port];
923 pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
924 oldskb->len, PCI_DMA_TODEVICE);
926 spin_lock(&card->tx_queue_lock);
927 skb = skb_dequeue(&card->tx_queue[port]);
928 spin_unlock(&card->tx_queue_lock);
930 if (skb && !card->using_dma) {
931 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
932 tx_started |= 1 << port; //Set TX full flag
933 oldskb = skb; /* We're done with this skb already */
934 } else if (skb && card->using_dma) {
935 SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data,
936 skb->len, PCI_DMA_TODEVICE);
937 iowrite32(SKB_CB(skb)->dma_addr,
938 card->config_regs + TX_DMA_ADDR(port));
944 /* Clean up and free oldskb now it's gone */
946 dev_info(&card->dev->dev, "Transmitted: port %d\n",
948 print_buffer(oldskb);
951 vcc = SKB_CB(oldskb)->vcc;
954 atomic_inc(&vcc->stats->tx);
955 solos_pop(vcc, oldskb);
957 dev_kfree_skb_irq(oldskb);
962 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
964 spin_unlock_irqrestore(&card->tx_lock, flags);
968 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
970 struct solos_card *card = vcc->dev->dev_data;
971 struct sk_buff *skb2 = NULL;
972 struct pkt_hdr *header;
975 //dev_dbg(&card->dev->dev, "psend called.\n");
976 //dev_dbg(&card->dev->dev, "dev,vpi,vci = %d,%d,%d\n",SOLOS_CHAN(vcc->dev),vcc->vpi,vcc->vci);
979 skb2 = atm_alloc_charge(vcc, skb->len, GFP_ATOMIC);
981 memcpy(skb2->data, skb->data, skb->len);
982 skb_put(skb2, skb->len);
983 vcc->push(vcc, skb2);
984 atomic_inc(&vcc->stats->rx);
986 atomic_inc(&vcc->stats->tx);
992 if (pktlen > (BUF_SIZE - sizeof(*header))) {
993 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
998 if (!skb_clone_writable(skb, sizeof(*header))) {
1002 if (skb_headroom(skb) < sizeof(*header))
1003 expand_by = sizeof(*header) - skb_headroom(skb);
1005 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1007 dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1008 solos_pop(vcc, skb);
1013 header = (void *)skb_push(skb, sizeof(*header));
1015 /* This does _not_ include the size of the header */
1016 header->size = cpu_to_le16(pktlen);
1017 header->vpi = cpu_to_le16(vcc->vpi);
1018 header->vci = cpu_to_le16(vcc->vci);
1019 header->type = cpu_to_le16(PKT_DATA);
1021 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1026 static struct atmdev_ops fpga_ops = {
1038 .owner = THIS_MODULE
1041 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1045 uint8_t major_ver, minor_ver;
1047 struct solos_card *card;
1052 card = kzalloc(sizeof(*card), GFP_KERNEL);
1057 init_waitqueue_head(&card->fw_wq);
1058 init_waitqueue_head(&card->param_wq);
1060 err = pci_enable_device(dev);
1062 dev_warn(&dev->dev, "Failed to enable PCI device\n");
1066 err = pci_set_dma_mask(dev, DMA_32BIT_MASK);
1068 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1072 err = pci_request_regions(dev, "solos");
1074 dev_warn(&dev->dev, "Failed to request regions\n");
1078 card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1079 if (!card->config_regs) {
1080 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1081 goto out_release_regions;
1083 card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1084 if (!card->buffers) {
1085 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1086 goto out_unmap_config;
1089 // for(i=0;i<64 ;i+=4){
1090 // data32=ioread32(card->buffers + i);
1091 // dev_dbg(&card->dev->dev, "%08lX\n",(unsigned long)data32);
1094 //Fill Config Mem with zeros
1095 for(i = 0; i < 128; i += 4)
1096 iowrite32(0, card->config_regs + i);
1098 //Set RX empty flags
1099 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1101 data32 = ioread32(card->config_regs + FPGA_VER);
1102 fpga_ver = (data32 & 0x0000FFFF);
1103 major_ver = ((data32 & 0xFF000000) >> 24);
1104 minor_ver = ((data32 & 0x00FF0000) >> 16);
1105 dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1106 major_ver, minor_ver, fpga_ver);
1109 card->using_dma = 1;
1111 card->nr_ports = 2; /* FIXME: Detect daughterboard */
1113 pci_set_drvdata(dev, card);
1115 tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1116 spin_lock_init(&card->tx_lock);
1117 spin_lock_init(&card->tx_queue_lock);
1118 spin_lock_init(&card->cli_queue_lock);
1119 spin_lock_init(&card->param_queue_lock);
1120 INIT_LIST_HEAD(&card->param_queue);
1123 // Set Loopback mode
1124 data32 = 0x00010000;
1125 iowrite32(data32,card->config_regs + FLAGS_ADDR);
1128 // Fill Buffers with zeros
1129 for (i = 0; i < BUF_SIZE * 8; i += 4)
1130 iowrite32(0, card->buffers + i);
1133 for(i = 0; i < (BUF_SIZE * 1); i += 4)
1134 iowrite32(0x12345678, card->buffers + i + (0*BUF_SIZE));
1135 for(i = 0; i < (BUF_SIZE * 1); i += 4)
1136 iowrite32(0xabcdef98, card->buffers + i + (1*BUF_SIZE));
1138 // Read Config Memory
1139 printk(KERN_DEBUG "Reading Config MEM\n");
1141 for(i = 0; i < 16; i++) {
1142 data32=ioread32(card->buffers + i*(BUF_SIZE/2));
1143 printk(KERN_ALERT "Addr: %lX Data: %08lX\n",
1144 (unsigned long)(addr_start + i*(BUF_SIZE/2)),
1145 (unsigned long)data32);
1148 //dev_dbg(&card->dev->dev, "Requesting IRQ: %d\n",dev->irq);
1149 err = request_irq(dev->irq, solos_irq, IRQF_DISABLED|IRQF_SHARED,
1152 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1153 goto out_unmap_both;
1157 iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1160 flash_upgrade(card, 0);
1162 if (firmware_upgrade)
1163 flash_upgrade(card, 1);
1165 err = atm_init(card);
1172 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1173 free_irq(dev->irq, card);
1174 tasklet_kill(&card->tlet);
1177 pci_set_drvdata(dev, NULL);
1178 pci_iounmap(dev, card->config_regs);
1180 pci_iounmap(dev, card->buffers);
1181 out_release_regions:
1182 pci_release_regions(dev);
1187 static int atm_init(struct solos_card *card)
1191 for (i = 0; i < card->nr_ports; i++) {
1192 struct sk_buff *skb;
1193 struct pkt_hdr *header;
1195 skb_queue_head_init(&card->tx_queue[i]);
1196 skb_queue_head_init(&card->cli_queue[i]);
1198 card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL);
1199 if (!card->atmdev[i]) {
1200 dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1204 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1205 dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1206 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1207 dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1209 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1211 card->atmdev[i]->ci_range.vpi_bits = 8;
1212 card->atmdev[i]->ci_range.vci_bits = 16;
1213 card->atmdev[i]->dev_data = card;
1214 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1215 card->atmdev[i]->signal = ATM_PHY_SIG_UNKNOWN;
1217 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
1219 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1223 header = (void *)skb_put(skb, sizeof(*header));
1225 header->size = cpu_to_le16(0);
1226 header->vpi = cpu_to_le16(0);
1227 header->vci = cpu_to_le16(0);
1228 header->type = cpu_to_le16(PKT_STATUS);
1230 fpga_queue(card, i, skb, NULL);
1235 static void atm_remove(struct solos_card *card)
1239 for (i = 0; i < card->nr_ports; i++) {
1240 if (card->atmdev[i]) {
1241 dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1243 sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1244 atm_dev_deregister(card->atmdev[i]);
1249 static void fpga_remove(struct pci_dev *dev)
1251 struct solos_card *card = pci_get_drvdata(dev);
1258 dev_vdbg(&dev->dev, "Freeing IRQ\n");
1259 // Disable IRQs from FPGA
1260 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1261 free_irq(dev->irq, card);
1262 tasklet_kill(&card->tlet);
1264 // iowrite32(0x01,pciregs);
1265 dev_vdbg(&dev->dev, "Unmapping PCI resource\n");
1266 pci_iounmap(dev, card->buffers);
1267 pci_iounmap(dev, card->config_regs);
1269 dev_vdbg(&dev->dev, "Releasing PCI Region\n");
1270 pci_release_regions(dev);
1271 pci_disable_device(dev);
1273 pci_set_drvdata(dev, NULL);
1275 // dev_dbg(&card->dev->dev, "fpga_remove\n");
1279 static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
1280 { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1284 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1286 static struct pci_driver fpga_driver = {
1288 .id_table = fpga_pci_tbl,
1289 .probe = fpga_probe,
1290 .remove = fpga_remove,
1294 static int __init solos_pci_init(void)
1296 printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1297 return pci_register_driver(&fpga_driver);
1300 static void __exit solos_pci_exit(void)
1302 pci_unregister_driver(&fpga_driver);
1303 printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1306 module_init(solos_pci_init);
1307 module_exit(solos_pci_exit);