1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2002-2008 Krzysztof Halasa <khc@pm.waw.pl>
10  *    Hitachi HD64572 SCA-II User's Manual
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/capability.h>
19 #include <linux/slab.h>
20 #include <linux/types.h>
21 #include <linux/fcntl.h>
22 #include <linux/in.h>
23 #include <linux/string.h>
24 #include <linux/errno.h>
25 #include <linux/init.h>
26 #include <linux/ioport.h>
27 #include <linux/netdevice.h>
28 #include <linux/hdlc.h>
29 #include <linux/pci.h>
30 #include <linux/delay.h>
31 #include <asm/io.h>
33 #include "hd64572.h"
49 	u32 loc_addr_range[4];	/* 00-0Ch : Local Address Ranges */
50 	u32 loc_rom_range;	/* 10h : Local ROM Range */
51 	u32 loc_addr_base[4];	/* 14-20h : Local Address Base Addrs */
52 	u32 loc_rom_base;	/* 24h : Local ROM Base */
53 	u32 loc_bus_descr[4];	/* 28-34h : Local Bus Descriptors */
54 	u32 rom_bus_descr;	/* 38h : ROM Bus Descriptor */
55 	u32 cs_base[4];		/* 3C-48h : Chip Select Base Addrs */
57 	u32 init_ctrl;		/* 50h : EEPROM ctrl, Init Ctrl, etc */
73 	u8 chan;		/* physical port # - 0 or 1 */
88 #define get_port(card, port)	     (&(card)->ports[port])
100 		length -= len;  in new_memcpy_toio()
112 	card_t *card = port->card;  in pci200_set_iface()
114 	u8 rxs = port->rxs & CLK_BRG_MASK;  in pci200_set_iface()
115 	u8 txs = port->txs & CLK_BRG_MASK;  in pci200_set_iface()
117 	sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS,  in pci200_set_iface()
118 		port->card);  in pci200_set_iface()
119 	switch (port->settings.clock_type) {  in pci200_set_iface()
141 	port->rxs = rxs;  in pci200_set_iface()
142 	port->txs = txs;  in pci200_set_iface()
158 	sca_flush(port->card);  in pci200_open()
165 	sca_flush(dev_to_port(dev)->card);  in pci200_close()
179 	return -EOPNOTSUPP;  in pci200_siocdevprivate()
186 	sync_serial_settings __user *line = ifs->ifs_ifsu.sync;  in pci200_ioctl()
189 	switch (ifs->type) {  in pci200_ioctl()
191 		ifs->type = IF_IFACE_V35;  in pci200_ioctl()
192 		if (ifs->size < size) {  in pci200_ioctl()
193 			ifs->size = size; /* data size wanted */  in pci200_ioctl()
194 			return -ENOBUFS;  in pci200_ioctl()
196 		if (copy_to_user(line, &port->settings, size))  in pci200_ioctl()
197 			return -EFAULT;  in pci200_ioctl()
203 			return -EPERM;  in pci200_ioctl()
206 			return -EFAULT;  in pci200_ioctl()
212 			return -EINVAL;	/* No such clock setting */  in pci200_ioctl()
215 			return -EINVAL;  in pci200_ioctl()
217 		memcpy(&port->settings, &new_line, size); /* Update settings */  in pci200_ioctl()
219 		sca_flush(port->card);  in pci200_ioctl()
233 		if (card->ports[i].card)  in pci200_pci_remove_one()
234 			unregister_hdlc_device(card->ports[i].netdev);  in pci200_pci_remove_one()
236 	if (card->irq)  in pci200_pci_remove_one()
237 		free_irq(card->irq, card);  in pci200_pci_remove_one()
239 	if (card->rambase)  in pci200_pci_remove_one()
240 		iounmap(card->rambase);  in pci200_pci_remove_one()
241 	if (card->scabase)  in pci200_pci_remove_one()
242 		iounmap(card->scabase);  in pci200_pci_remove_one()
243 	if (card->plxbase)  in pci200_pci_remove_one()
244 		iounmap(card->plxbase);  in pci200_pci_remove_one()
248 	if (card->ports[0].netdev)  in pci200_pci_remove_one()
249 		free_netdev(card->ports[0].netdev);  in pci200_pci_remove_one()
250 	if (card->ports[1].netdev)  in pci200_pci_remove_one()
251 		free_netdev(card->ports[1].netdev);  in pci200_pci_remove_one()
288 		return -ENOBUFS;  in pci200_pci_init_one()
291 	card->ports[0].netdev = alloc_hdlcdev(&card->ports[0]);  in pci200_pci_init_one()
292 	card->ports[1].netdev = alloc_hdlcdev(&card->ports[1]);  in pci200_pci_init_one()
293 	if (!card->ports[0].netdev || !card->ports[1].netdev) {  in pci200_pci_init_one()
296 		return -ENOMEM;  in pci200_pci_init_one()
304 		return -EFAULT;  in pci200_pci_init_one()
308 	card->plxbase = ioremap(plxphys, PCI200SYN_PLX_SIZE);  in pci200_pci_init_one()
311 	card->scabase = ioremap(scaphys, PCI200SYN_SCA_SIZE);  in pci200_pci_init_one()
314 	card->rambase = pci_ioremap_bar(pdev, 3);  in pci200_pci_init_one()
316 	if (!card->plxbase || !card->scabase || !card->rambase) {  in pci200_pci_init_one()
319 		return -EFAULT;  in pci200_pci_init_one()
323 	p = &card->plxbase->init_ctrl;  in pci200_pci_init_one()
325 	readl(p);		/* Flush the write - do not use sca_flush */  in pci200_pci_init_one()
329 	readl(p);		/* Flush the write - do not use sca_flush */  in pci200_pci_init_one()
332 	ramsize = sca_detect_ram(card, card->rambase,  in pci200_pci_init_one()
335 	/* number of TX + RX buffers for one port - this is dual port card */  in pci200_pci_init_one()
337 	card->tx_ring_buffers = min(i / 2, MAX_TX_BUFFERS);  in pci200_pci_init_one()
338 	card->rx_ring_buffers = i - card->tx_ring_buffers;  in pci200_pci_init_one()
340 	card->buff_offset = 2 * sizeof(pkt_desc) * (card->tx_ring_buffers +  in pci200_pci_init_one()
341 						    card->rx_ring_buffers);  in pci200_pci_init_one()
345 		pdev->irq, card->tx_ring_buffers, card->rx_ring_buffers);  in pci200_pci_init_one()
347 	if (card->tx_ring_buffers < 1) {  in pci200_pci_init_one()
350 		return -EFAULT;  in pci200_pci_init_one()
354 	p = &card->plxbase->intr_ctrl_stat;  in pci200_pci_init_one()
358 	if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, "pci200syn", card)) {  in pci200_pci_init_one()
359 		pr_warn("could not allocate IRQ%d\n", pdev->irq);  in pci200_pci_init_one()
361 		return -EBUSY;  in pci200_pci_init_one()
363 	card->irq = pdev->irq;  in pci200_pci_init_one()
368 		port_t *port = &card->ports[i];  in pci200_pci_init_one()
369 		struct net_device *dev = port->netdev;  in pci200_pci_init_one()
372 		port->chan = i;  in pci200_pci_init_one()
374 		spin_lock_init(&port->lock);  in pci200_pci_init_one()
375 		dev->irq = card->irq;  in pci200_pci_init_one()
376 		dev->mem_start = ramphys;  in pci200_pci_init_one()
377 		dev->mem_end = ramphys + ramsize - 1;  in pci200_pci_init_one()
378 		dev->tx_queue_len = 50;  in pci200_pci_init_one()
379 		dev->netdev_ops = &pci200_ops;  in pci200_pci_init_one()
380 		hdlc->attach = sca_attach;  in pci200_pci_init_one()
381 		hdlc->xmit = sca_xmit;  in pci200_pci_init_one()
382 		port->settings.clock_type = CLOCK_EXT;  in pci200_pci_init_one()
383 		port->card = card;  in pci200_pci_init_one()
387 			port->card = NULL;  in pci200_pci_init_one()
389 			return -ENOBUFS;  in pci200_pci_init_one()
392 		netdev_info(dev, "PCI200SYN channel %d\n", port->chan);  in pci200_pci_init_one()
416 		return -EINVAL;  in pci200_init_module()