1 // SPDX-License-Identifier: GPL-2.0-only
7  * - Kvaser linux driver, version 4.72 BETA
8  *   Copyright (C) 2002-2007 KVASER AB
10  * - Lincan driver, version 0.3.3, OCERA project
14  * - Socketcan SJA1000 drivers
16  *   Copyright (c) 2002-2007 Volkswagen Group Electronic Research
35 MODULE_DESCRIPTION("Socket-CAN driver for KVASER PCAN PCI cards");
43 	struct net_device *slave_dev[MAX_NO_OF_CHANNELS-1];
54  * RX1 is connected to ground.
55  * TX1 is not connected.
56  * CLKO is not connected.
58  * This means  normal output mode , push-pull and the correct polarity.
65  * (meaning divide-by-2), the Pelican bit, and the clock-off bit
88 #define PCI_CONFIG_PORT_SIZE      0x80      /* size of the config io-memory */
89 #define PCI_PORT_SIZE             0x80      /* size of a channel io-memory */
90 #define PCI_PORT_XILINX_SIZE      0x08      /* size of a xilinx io-memory */
108 	return ioread8(priv->reg_base + port);  in kvaser_pci_read_reg()
114 	iowrite8(val, priv->reg_base + port);  in kvaser_pci_write_reg()
120 	struct kvaser_pci *board = priv->priv;  in kvaser_pci_disable_irq()
124 	intcsr = ioread32(board->conf_addr + S5920_INTCSR);  in kvaser_pci_disable_irq()
126 	iowrite32(intcsr, board->conf_addr + S5920_INTCSR);  in kvaser_pci_disable_irq()
132 	struct kvaser_pci *board = priv->priv;  in kvaser_pci_enable_irq()
136 	tmp_en_io = ioread32(board->conf_addr + S5920_INTCSR);  in kvaser_pci_enable_irq()
138 	iowrite32(tmp_en_io, board->conf_addr + S5920_INTCSR);  in kvaser_pci_enable_irq()
169 	board = priv->priv;  in kvaser_pci_del_chan()
173 	dev_info(&board->pci_dev->dev, "Removing device %s\n",  in kvaser_pci_del_chan()
174 		 dev->name);  in kvaser_pci_del_chan()
179 	for (i = 0; i < board->no_channels - 1; i++) {  in kvaser_pci_del_chan()
180 		if (board->slave_dev[i]) {  in kvaser_pci_del_chan()
181 			dev_info(&board->pci_dev->dev, "Removing device %s\n",  in kvaser_pci_del_chan()
182 				 board->slave_dev[i]->name);  in kvaser_pci_del_chan()
183 			unregister_sja1000dev(board->slave_dev[i]);  in kvaser_pci_del_chan()
184 			free_sja1000dev(board->slave_dev[i]);  in kvaser_pci_del_chan()
189 	pci_iounmap(board->pci_dev, priv->reg_base);  in kvaser_pci_del_chan()
190 	pci_iounmap(board->pci_dev, board->conf_addr);  in kvaser_pci_del_chan()
191 	pci_iounmap(board->pci_dev, board->res_addr);  in kvaser_pci_del_chan()
209 		return -ENOMEM;  in kvaser_pci_add_chan()
212 	board = priv->priv;  in kvaser_pci_add_chan()
214 	board->pci_dev = pdev;  in kvaser_pci_add_chan()
215 	board->channel = channel;  in kvaser_pci_add_chan()
218 	board->conf_addr = conf_addr;  in kvaser_pci_add_chan()
221 	board->res_addr = res_addr;  in kvaser_pci_add_chan()
224 		board->xilinx_ver =  in kvaser_pci_add_chan()
225 			ioread8(board->res_addr + XILINX_VERINT) >> 4;  in kvaser_pci_add_chan()
227 		/* Assert PTADR# - we're in passive mode so the other bits are  in kvaser_pci_add_chan()
229 		iowrite32(0x80808080UL, board->conf_addr + S5920_PTCR);  in kvaser_pci_add_chan()
235 		struct kvaser_pci *master_board = master_priv->priv;  in kvaser_pci_add_chan()
236 		master_board->slave_dev[channel - 1] = dev;  in kvaser_pci_add_chan()
237 		master_board->no_channels = channel + 1;  in kvaser_pci_add_chan()
238 		board->xilinx_ver = master_board->xilinx_ver;  in kvaser_pci_add_chan()
241 	priv->reg_base = base_addr + channel * KVASER_PCI_PORT_BYTES;  in kvaser_pci_add_chan()
243 	priv->read_reg = kvaser_pci_read_reg;  in kvaser_pci_add_chan()
244 	priv->write_reg = kvaser_pci_write_reg;  in kvaser_pci_add_chan()
246 	priv->can.clock.freq = KVASER_PCI_CAN_CLOCK;  in kvaser_pci_add_chan()
248 	priv->ocr = KVASER_PCI_OCR;  in kvaser_pci_add_chan()
249 	priv->cdr = KVASER_PCI_CDR;  in kvaser_pci_add_chan()
251 	priv->irq_flags = IRQF_SHARED;  in kvaser_pci_add_chan()
252 	dev->irq = pdev->irq;  in kvaser_pci_add_chan()
254 	dev_info(&pdev->dev, "reg_base=%p conf_addr=%p irq=%d\n",  in kvaser_pci_add_chan()
255 		 priv->reg_base, board->conf_addr, dev->irq);  in kvaser_pci_add_chan()
257 	SET_NETDEV_DEV(dev, &pdev->dev);  in kvaser_pci_add_chan()
258 	dev->dev_id = channel;  in kvaser_pci_add_chan()
263 		dev_err(&pdev->dev, "Registering device failed (err=%d)\n",  in kvaser_pci_add_chan()
291 	dev_info(&pdev->dev, "initializing device %04x:%04x\n",  in kvaser_pci_init_one()
292 		 pdev->vendor, pdev->device);  in kvaser_pci_init_one()
305 		err = -ENODEV;  in kvaser_pci_init_one()
312 		err = -ENOMEM;  in kvaser_pci_init_one()
318 		err = -ENOMEM;  in kvaser_pci_init_one()
324 		err = -ENOMEM;  in kvaser_pci_init_one()
337 	board = priv->priv;  in kvaser_pci_init_one()
339 	dev_info(&pdev->dev, "xilinx version=%d number of channels=%d\n",  in kvaser_pci_init_one()
340 		 board->xilinx_ver, board->no_channels);  in kvaser_pci_init_one()