67 #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)  argument
68 #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))  argument
69 #define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
162 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
169 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
185 	struct solos_card *card = atmdev->dev_data;  in solos_param_show()  local
195 		dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");  in solos_param_show()
214 	spin_lock_irq(&card->param_queue_lock);  in solos_param_show()
215 	list_add(&prm.list, &card->param_queue);  in solos_param_show()
216 	spin_unlock_irq(&card->param_queue_lock);  in solos_param_show()
218 	fpga_queue(card, prm.port, skb, NULL);  in solos_param_show()
220 	wait_event_timeout(card->param_wq, prm.response, 5 * HZ);  in solos_param_show()
222 	spin_lock_irq(&card->param_queue_lock);  in solos_param_show()
224 	spin_unlock_irq(&card->param_queue_lock);  in solos_param_show()
240 	struct solos_card *card = atmdev->dev_data;  in solos_param_store()  local
251 		dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");  in solos_param_store()
270 	spin_lock_irq(&card->param_queue_lock);  in solos_param_store()
271 	list_add(&prm.list, &card->param_queue);  in solos_param_store()
272 	spin_unlock_irq(&card->param_queue_lock);  in solos_param_store()
274 	fpga_queue(card, prm.port, skb, NULL);  in solos_param_store()
276 	wait_event_timeout(card->param_wq, prm.response, 5 * HZ);  in solos_param_store()
278 	spin_lock_irq(&card->param_queue_lock);  in solos_param_store()
280 	spin_unlock_irq(&card->param_queue_lock);  in solos_param_store()
302 		dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",  in solos_param_store()
339 static int process_status(struct solos_card *card, int port, struct sk_buff *skb)  in process_status()  argument
344 	if (!card->atmdev[port])  in process_status()
353 		dev_warn(&card->dev->dev, "Unexpected status interrupt version\n");  in process_status()
357 		dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",  in process_status()
366 		dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",  in process_status()
388 		atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);  in process_status()
389 		dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);  in process_status()
400 	dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",  in process_status()
404 	card->atmdev[port]->link_rate = rate_down / 424;  in process_status()
405 	atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);  in process_status()
410 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)  in process_command()  argument
430 	spin_lock_irqsave(&card->param_queue_lock, flags);  in process_command()
431 	list_for_each_entry(prm, &card->param_queue, list) {  in process_command()
435 			wake_up(&card->param_wq);  in process_command()
440 	spin_unlock_irqrestore(&card->param_queue_lock, flags);  in process_command()
448 	struct solos_card *card = atmdev->dev_data;  in console_show()  local
452 	spin_lock_bh(&card->cli_queue_lock);  in console_show()
453 	skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);  in console_show()
454 	spin_unlock_bh(&card->cli_queue_lock);  in console_show()
465 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)  in send_command()  argument
471 		dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");  in send_command()
476 		dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");  in send_command()
489 	fpga_queue(card, dev, skb, NULL);  in send_command()
498 	struct solos_card *card = atmdev->dev_data;  in console_store()  local
501 	err = send_command(card, SOLOS_CHAN(atmdev), buf, count);  in console_store()
520 	struct solos_card *card = dev_get_drvdata(dev);  in geos_gpio_store()  local
526 	spin_lock_irq(&card->param_queue_lock);  in geos_gpio_store()
527 	data32 = ioread32(card->config_regs + GPIO_STATUS);  in geos_gpio_store()
530 		iowrite32(data32, card->config_regs + GPIO_STATUS);  in geos_gpio_store()
533 		iowrite32(data32, card->config_regs + GPIO_STATUS);  in geos_gpio_store()
537 	spin_unlock_irq(&card->param_queue_lock);  in geos_gpio_store()
545 	struct solos_card *card = dev_get_drvdata(dev);  in geos_gpio_show()  local
548 	data32 = ioread32(card->config_regs + GPIO_STATUS);  in geos_gpio_show()
558 	struct solos_card *card = dev_get_drvdata(dev);  in hardware_show()  local
561 	data32 = ioread32(card->config_regs + GPIO_STATUS);  in hardware_show()
624 static int flash_upgrade(struct solos_card *card, int chip)  in flash_upgrade()  argument
635 		if (card->atmel_flash)  in flash_upgrade()
642 		if (card->atmel_flash)  in flash_upgrade()
648 		if (card->fpga_version > LEGACY_BUFFERS){  in flash_upgrade()
650 			if (card->atmel_flash)  in flash_upgrade()
655 			dev_info(&card->dev->dev, "FPGA version doesn't support"  in flash_upgrade()
661 		if (card->fpga_version > LEGACY_BUFFERS){  in flash_upgrade()
663 			if (card->atmel_flash)  in flash_upgrade()
668 			dev_info(&card->dev->dev, "FPGA version doesn't support"  in flash_upgrade()
677 	if (request_firmware(&fw, fw_name, &card->dev->dev))  in flash_upgrade()
680 	dev_info(&card->dev->dev, "Flash upgrade starting\n");  in flash_upgrade()
683 	iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER);  in flash_upgrade()
686 	dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);  in flash_upgrade()
687 	dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);  in flash_upgrade()
689 	dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");  in flash_upgrade()
690 	iowrite32(1, card->config_regs + FPGA_MODE);  in flash_upgrade()
691 	(void) ioread32(card->config_regs + FPGA_MODE);   in flash_upgrade()
695 		dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");  in flash_upgrade()
697 		dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");  in flash_upgrade()
698 	iowrite32((chip * 2), card->config_regs + FLASH_MODE);  in flash_upgrade()
701 	iowrite32(1, card->config_regs + WRITE_FLASH);  in flash_upgrade()
702 	wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));  in flash_upgrade()
708 		iowrite32(0, card->config_regs + WRITE_FLASH);  in flash_upgrade()
712 		iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);  in flash_upgrade()
717 			if (card->atmel_flash)  in flash_upgrade()
721 			if(card->fpga_version > LEGACY_BUFFERS)  in flash_upgrade()
724 				iowrite32(word, RX_BUF(card, 3) + i);  in flash_upgrade()
728 		iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);  in flash_upgrade()
729 		iowrite32(1, card->config_regs + WRITE_FLASH);  in flash_upgrade()
730 		wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));  in flash_upgrade()
734 	iowrite32(0, card->config_regs + WRITE_FLASH);  in flash_upgrade()
735 	iowrite32(0, card->config_regs + FPGA_MODE);  in flash_upgrade()
736 	iowrite32(0, card->config_regs + FLASH_MODE);  in flash_upgrade()
737 	dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");  in flash_upgrade()
743 	struct solos_card *card = dev_id;  in solos_irq()  local
746 	iowrite32(0, card->config_regs + IRQ_CLEAR);  in solos_irq()
749 	if (card->atmdev[0])  in solos_irq()
750 		tasklet_schedule(&card->tlet);  in solos_irq()
752 		wake_up(&card->fw_wq);  in solos_irq()
759 	struct solos_card *card = (void *)card_arg;  in solos_bh()  local
769 	card_flags = fpga_tx(card);  in solos_bh()
771 	for (port = 0; port < card->nr_ports; port++) {  in solos_bh()
778 			if (card->using_dma) {  in solos_bh()
779 				skb = card->rx_skb[port];  in solos_bh()
780 				card->rx_skb[port] = NULL;  in solos_bh()
782 				dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,  in solos_bh()
794 				memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));  in solos_bh()
797 				if (size > (card->buffer_size - sizeof(*header))){  in solos_bh()
798 					dev_warn(&card->dev->dev, "Invalid buffer size\n");  in solos_bh()
810 						dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");  in solos_bh()
815 					      RX_BUF(card, port) + sizeof(*header),  in solos_bh()
819 				dev_info(&card->dev->dev, "Received: port %d\n", port);  in solos_bh()
820 				dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",  in solos_bh()
828 				vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),  in solos_bh()
832 						dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",  in solos_bh()
844 				if (process_status(card, port, skb) &&  in solos_bh()
846 					dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);  in solos_bh()
854 				if (process_command(card, port, skb))  in solos_bh()
856 				spin_lock(&card->cli_queue_lock);  in solos_bh()
857 				if (skb_queue_len(&card->cli_queue[port]) > 10) {  in solos_bh()
859 						dev_warn(&card->dev->dev, "Dropping console response on port %d\n",  in solos_bh()
863 					skb_queue_tail(&card->cli_queue[port], skb);  in solos_bh()
864 				spin_unlock(&card->cli_queue_lock);  in solos_bh()
869 		if (card->using_dma && card->atmdev[port] &&  in solos_bh()
870 		    !card->rx_skb[port]) {  in solos_bh()
877 					dma_map_single(&card->dev->dev, skb->data,  in solos_bh()
880 					  card->config_regs + RX_DMA_ADDR(port));  in solos_bh()
881 				card->rx_skb[port] = skb;  in solos_bh()
884 					dev_warn(&card->dev->dev, "Failed to allocate RX skb");  in solos_bh()
887 				tasklet_schedule(&card->tlet);  in solos_bh()
892 		iowrite32(rx_done, card->config_regs + FLAGS_ADDR);  in solos_bh()
920 	struct solos_card *card = vcc->dev->dev_data;  in popen()  local
925 		dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",  in popen()
933 			dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");  in popen()
943 	fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);  in popen()
953 	struct solos_card *card = vcc->dev->dev_data;  in pclose()  local
959 	spin_lock_bh(&card->tx_queue_lock);  in pclose()
960 	skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {  in pclose()
962 			skb_unlink(skb, &card->tx_queue[port]);  in pclose()
966 	spin_unlock_bh(&card->tx_queue_lock);  in pclose()
970 		dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");  in pclose()
981 	fpga_queue(card, port, skb, NULL);  in pclose()
983 	if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))  in pclose()
984 		dev_warn(&card->dev->dev,  in pclose()
992 	tasklet_unlock_wait(&card->tlet);  in pclose()
1028 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,  in fpga_queue()  argument
1036 	spin_lock_irqsave(&card->tx_queue_lock, flags);  in fpga_queue()
1037 	old_len = skb_queue_len(&card->tx_queue[port]);  in fpga_queue()
1038 	skb_queue_tail(&card->tx_queue[port], skb);  in fpga_queue()
1040 		card->tx_mask |= (1 << port);  in fpga_queue()
1041 	spin_unlock_irqrestore(&card->tx_queue_lock, flags);  in fpga_queue()
1046 		fpga_tx(card);  in fpga_queue()
1049 static uint32_t fpga_tx(struct solos_card *card)  in fpga_tx()  argument
1058 	spin_lock_irqsave(&card->tx_lock, flags);  in fpga_tx()
1060 	card_flags = ioread32(card->config_regs + FLAGS_ADDR);  in fpga_tx()
1068 	tx_pending = card->tx_mask & ~card_flags;  in fpga_tx()
1072 			struct sk_buff *oldskb = card->tx_skb[port];  in fpga_tx()
1074 				dma_unmap_single(&card->dev->dev, SKB_CB(oldskb)->dma_addr,  in fpga_tx()
1076 				card->tx_skb[port] = NULL;  in fpga_tx()
1078 			spin_lock(&card->tx_queue_lock);  in fpga_tx()
1079 			skb = skb_dequeue(&card->tx_queue[port]);  in fpga_tx()
1081 				card->tx_mask &= ~(1 << port);  in fpga_tx()
1082 			spin_unlock(&card->tx_queue_lock);  in fpga_tx()
1084 			if (skb && !card->using_dma) {  in fpga_tx()
1085 				memcpy_toio(TX_BUF(card, port), skb->data, skb->len);  in fpga_tx()
1088 			} else if (skb && card->using_dma) {  in fpga_tx()
1090 				if ((unsigned long)data & card->dma_alignment) {  in fpga_tx()
1091 					data = card->dma_bounce + (BUF_SIZE * port);  in fpga_tx()
1094 				SKB_CB(skb)->dma_addr = dma_map_single(&card->dev->dev, data,  in fpga_tx()
1096 				card->tx_skb[port] = skb;  in fpga_tx()
1098 					  card->config_regs + TX_DMA_ADDR(port));  in fpga_tx()
1110 				dev_info(&card->dev->dev, "Transmitted: port %d\n",  in fpga_tx()
1112 				dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",  in fpga_tx()
1125 				wake_up(&card->param_wq);  in fpga_tx()
1131 		iowrite32(tx_started, card->config_regs + FLAGS_ADDR);  in fpga_tx()
1133 	spin_unlock_irqrestore(&card->tx_lock, flags);  in fpga_tx()
1139 	struct solos_card *card = vcc->dev->dev_data;  in psend()  local
1145 		dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");  in psend()
1159 			dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");  in psend()
1173 	fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);  in psend()
1197 	struct solos_card *card;  in fpga_probe()  local
1199 	card = kzalloc(sizeof(*card), GFP_KERNEL);  in fpga_probe()
1200 	if (!card)  in fpga_probe()
1203 	card->dev = dev;  in fpga_probe()
1204 	init_waitqueue_head(&card->fw_wq);  in fpga_probe()
1205 	init_waitqueue_head(&card->param_wq);  in fpga_probe()
1225 	card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);  in fpga_probe()
1226 	if (!card->config_regs) {  in fpga_probe()
1231 	card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);  in fpga_probe()
1232 	if (!card->buffers) {  in fpga_probe()
1239 		iowrite32(1, card->config_regs + FPGA_MODE);  in fpga_probe()
1240 		ioread32(card->config_regs + FPGA_MODE);  in fpga_probe()
1242 		iowrite32(0, card->config_regs + FPGA_MODE);  in fpga_probe()
1243 		ioread32(card->config_regs + FPGA_MODE);  in fpga_probe()
1246 	data32 = ioread32(card->config_regs + FPGA_VER);  in fpga_probe()
1250 	card->fpga_version = FPGA_VERSION(major_ver,minor_ver);  in fpga_probe()
1251 	if (card->fpga_version > LEGACY_BUFFERS)  in fpga_probe()
1252 		card->buffer_size = BUF_SIZE;  in fpga_probe()
1254 		card->buffer_size = OLD_BUF_SIZE;  in fpga_probe()
1268 		card->atmel_flash = 1;  in fpga_probe()
1270 		card->atmel_flash = 0;  in fpga_probe()
1272 	data32 = ioread32(card->config_regs + PORTS);  in fpga_probe()
1273 	card->nr_ports = (data32 & 0x000000FF);  in fpga_probe()
1275 	if (card->fpga_version >= DMA_SUPPORTED) {  in fpga_probe()
1277 		card->using_dma = 1;  in fpga_probe()
1279 			card->dma_alignment = 3;  in fpga_probe()
1280 			card->dma_bounce = kmalloc_array(card->nr_ports,  in fpga_probe()
1282 			if (!card->dma_bounce) {  in fpga_probe()
1283 				dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n");  in fpga_probe()
1290 		card->using_dma = 0;  in fpga_probe()
1292 		iowrite32(0xF0, card->config_regs + FLAGS_ADDR);  in fpga_probe()
1295 	pci_set_drvdata(dev, card);  in fpga_probe()
1297 	tasklet_init(&card->tlet, solos_bh, (unsigned long)card);  in fpga_probe()
1298 	spin_lock_init(&card->tx_lock);  in fpga_probe()
1299 	spin_lock_init(&card->tx_queue_lock);  in fpga_probe()
1300 	spin_lock_init(&card->cli_queue_lock);  in fpga_probe()
1301 	spin_lock_init(&card->param_queue_lock);  in fpga_probe()
1302 	INIT_LIST_HEAD(&card->param_queue);  in fpga_probe()
1305 			  "solos-pci", card);  in fpga_probe()
1307 		dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);  in fpga_probe()
1311 	iowrite32(1, card->config_regs + IRQ_EN_ADDR);  in fpga_probe()
1314 		flash_upgrade(card, 0);  in fpga_probe()
1317 		flash_upgrade(card, 1);  in fpga_probe()
1320 		flash_upgrade(card, 2);  in fpga_probe()
1323 		flash_upgrade(card, 3);  in fpga_probe()
1325 	err = atm_init(card, &dev->dev);  in fpga_probe()
1329 	if (card->fpga_version >= DMA_SUPPORTED &&  in fpga_probe()
1330 	    sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))  in fpga_probe()
1331 		dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");  in fpga_probe()
1336 	iowrite32(0, card->config_regs + IRQ_EN_ADDR);  in fpga_probe()
1337 	free_irq(dev->irq, card);  in fpga_probe()
1338 	tasklet_kill(&card->tlet);  in fpga_probe()
1341 	kfree(card->dma_bounce);  in fpga_probe()
1342 	pci_iounmap(dev, card->buffers);  in fpga_probe()
1344 	pci_iounmap(dev, card->config_regs);  in fpga_probe()
1348 	kfree(card);  in fpga_probe()
1352 static int atm_init(struct solos_card *card, struct device *parent)  in atm_init()  argument
1356 	for (i = 0; i < card->nr_ports; i++) {  in atm_init()
1360 		skb_queue_head_init(&card->tx_queue[i]);  in atm_init()
1361 		skb_queue_head_init(&card->cli_queue[i]);  in atm_init()
1363 		card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);  in atm_init()
1364 		if (!card->atmdev[i]) {  in atm_init()
1365 			dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);  in atm_init()
1366 			atm_remove(card);  in atm_init()
1369 		if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))  in atm_init()
1370 			dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);  in atm_init()
1371 		if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))  in atm_init()
1372 			dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);  in atm_init()
1374 		dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);  in atm_init()
1376 		card->atmdev[i]->ci_range.vpi_bits = 8;  in atm_init()
1377 		card->atmdev[i]->ci_range.vci_bits = 16;  in atm_init()
1378 		card->atmdev[i]->dev_data = card;  in atm_init()
1379 		card->atmdev[i]->phy_data = (void *)(unsigned long)i;  in atm_init()
1380 		atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);  in atm_init()
1384 			dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");  in atm_init()
1395 		fpga_queue(card, i, skb, NULL);  in atm_init()
1400 static void atm_remove(struct solos_card *card)  in atm_remove()  argument
1404 	for (i = 0; i < card->nr_ports; i++) {  in atm_remove()
1405 		if (card->atmdev[i]) {  in atm_remove()
1408 			dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);  in atm_remove()
1410 			sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);  in atm_remove()
1411 			atm_dev_deregister(card->atmdev[i]);  in atm_remove()
1413 			skb = card->rx_skb[i];  in atm_remove()
1415 				dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,  in atm_remove()
1419 			skb = card->tx_skb[i];  in atm_remove()
1421 				dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,  in atm_remove()
1425 			while ((skb = skb_dequeue(&card->tx_queue[i])))  in atm_remove()
1434 	struct solos_card *card = pci_get_drvdata(dev);  in fpga_remove()  local
1437 	iowrite32(0, card->config_regs + IRQ_EN_ADDR);  in fpga_remove()
1440 	iowrite32(1, card->config_regs + FPGA_MODE);  in fpga_remove()
1441 	(void)ioread32(card->config_regs + FPGA_MODE);   in fpga_remove()
1443 	if (card->fpga_version >= DMA_SUPPORTED)  in fpga_remove()
1444 		sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);  in fpga_remove()
1446 	atm_remove(card);  in fpga_remove()
1448 	free_irq(dev->irq, card);  in fpga_remove()
1449 	tasklet_kill(&card->tlet);  in fpga_remove()
1451 	kfree(card->dma_bounce);  in fpga_remove()
1454 	iowrite32(0, card->config_regs + FPGA_MODE);  in fpga_remove()
1455 	(void)ioread32(card->config_regs + FPGA_MODE);   in fpga_remove()
1457 	pci_iounmap(dev, card->buffers);  in fpga_remove()
1458 	pci_iounmap(dev, card->config_regs);  in fpga_remove()
1463 	kfree(card);  in fpga_remove()