Loading...
1/*
2 * Copyright (C) 2008 Per Dalen <per.dalen@cnw.se>
3 *
4 * Parts of this software are based on (derived) the following:
5 *
6 * - Kvaser linux driver, version 4.72 BETA
7 * Copyright (C) 2002-2007 KVASER AB
8 *
9 * - Lincan driver, version 0.3.3, OCERA project
10 * Copyright (C) 2004 Pavel Pisa
11 * Copyright (C) 2001 Arnaud Westenberg
12 *
13 * - Socketcan SJA1000 drivers
14 * Copyright (C) 2007 Wolfgang Grandegger <wg@grandegger.com>
15 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
16 * Copyright (c) 2003 Matthias Brukner, Trajet Gmbh, Rebenring 33,
17 * 38106 Braunschweig, GERMANY
18 *
19 * This program is free software; you can redistribute it and/or modify
20 * it under the terms of the version 2 of the GNU General Public License
21 * as published by the Free Software Foundation
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, see <http://www.gnu.org/licenses/>.
30 */
31
32#include <linux/kernel.h>
33#include <linux/module.h>
34#include <linux/interrupt.h>
35#include <linux/netdevice.h>
36#include <linux/delay.h>
37#include <linux/pci.h>
38#include <linux/can/dev.h>
39#include <linux/io.h>
40
41#include "sja1000.h"
42
43#define DRV_NAME "kvaser_pci"
44
45MODULE_AUTHOR("Per Dalen <per.dalen@cnw.se>");
46MODULE_DESCRIPTION("Socket-CAN driver for KVASER PCAN PCI cards");
47MODULE_SUPPORTED_DEVICE("KVASER PCAN PCI CAN card");
48MODULE_LICENSE("GPL v2");
49
50#define MAX_NO_OF_CHANNELS 4 /* max no of channels on a single card */
51
52struct kvaser_pci {
53 int channel;
54 struct pci_dev *pci_dev;
55 struct net_device *slave_dev[MAX_NO_OF_CHANNELS-1];
56 void __iomem *conf_addr;
57 void __iomem *res_addr;
58 int no_channels;
59 u8 xilinx_ver;
60};
61
62#define KVASER_PCI_CAN_CLOCK (16000000 / 2)
63
64/*
65 * The board configuration is probably following:
66 * RX1 is connected to ground.
67 * TX1 is not connected.
68 * CLKO is not connected.
69 * Setting the OCR register to 0xDA is a good idea.
70 * This means normal output mode , push-pull and the correct polarity.
71 */
72#define KVASER_PCI_OCR (OCR_TX0_PUSHPULL | OCR_TX1_PUSHPULL)
73
74/*
75 * In the CDR register, you should set CBP to 1.
76 * You will probably also want to set the clock divider value to 0
77 * (meaning divide-by-2), the Pelican bit, and the clock-off bit
78 * (you will have no need for CLKOUT anyway).
79 */
80#define KVASER_PCI_CDR (CDR_CBP | CDR_CLKOUT_MASK)
81
82/*
83 * These register values are valid for revision 14 of the Xilinx logic.
84 */
85#define XILINX_VERINT 7 /* Lower nibble simulate interrupts,
86 high nibble version number. */
87
88#define XILINX_PRESUMED_VERSION 14
89
90/*
91 * Important S5920 registers
92 */
93#define S5920_INTCSR 0x38
94#define S5920_PTCR 0x60
95#define INTCSR_ADDON_INTENABLE_M 0x2000
96
97
98#define KVASER_PCI_PORT_BYTES 0x20
99
100#define PCI_CONFIG_PORT_SIZE 0x80 /* size of the config io-memory */
101#define PCI_PORT_SIZE 0x80 /* size of a channel io-memory */
102#define PCI_PORT_XILINX_SIZE 0x08 /* size of a xilinx io-memory */
103
104#define KVASER_PCI_VENDOR_ID1 0x10e8 /* the PCI device and vendor IDs */
105#define KVASER_PCI_DEVICE_ID1 0x8406
106
107#define KVASER_PCI_VENDOR_ID2 0x1a07 /* the PCI device and vendor IDs */
108#define KVASER_PCI_DEVICE_ID2 0x0008
109
110static const struct pci_device_id kvaser_pci_tbl[] = {
111 {KVASER_PCI_VENDOR_ID1, KVASER_PCI_DEVICE_ID1, PCI_ANY_ID, PCI_ANY_ID,},
112 {KVASER_PCI_VENDOR_ID2, KVASER_PCI_DEVICE_ID2, PCI_ANY_ID, PCI_ANY_ID,},
113 { 0,}
114};
115
116MODULE_DEVICE_TABLE(pci, kvaser_pci_tbl);
117
118static u8 kvaser_pci_read_reg(const struct sja1000_priv *priv, int port)
119{
120 return ioread8(priv->reg_base + port);
121}
122
123static void kvaser_pci_write_reg(const struct sja1000_priv *priv,
124 int port, u8 val)
125{
126 iowrite8(val, priv->reg_base + port);
127}
128
129static void kvaser_pci_disable_irq(struct net_device *dev)
130{
131 struct sja1000_priv *priv = netdev_priv(dev);
132 struct kvaser_pci *board = priv->priv;
133 u32 intcsr;
134
135 /* Disable interrupts from card */
136 intcsr = ioread32(board->conf_addr + S5920_INTCSR);
137 intcsr &= ~INTCSR_ADDON_INTENABLE_M;
138 iowrite32(intcsr, board->conf_addr + S5920_INTCSR);
139}
140
141static void kvaser_pci_enable_irq(struct net_device *dev)
142{
143 struct sja1000_priv *priv = netdev_priv(dev);
144 struct kvaser_pci *board = priv->priv;
145 u32 tmp_en_io;
146
147 /* Enable interrupts from card */
148 tmp_en_io = ioread32(board->conf_addr + S5920_INTCSR);
149 tmp_en_io |= INTCSR_ADDON_INTENABLE_M;
150 iowrite32(tmp_en_io, board->conf_addr + S5920_INTCSR);
151}
152
153static int number_of_sja1000_chip(void __iomem *base_addr)
154{
155 u8 status;
156 int i;
157
158 for (i = 0; i < MAX_NO_OF_CHANNELS; i++) {
159 /* reset chip */
160 iowrite8(MOD_RM, base_addr +
161 (i * KVASER_PCI_PORT_BYTES) + SJA1000_MOD);
162 status = ioread8(base_addr +
163 (i * KVASER_PCI_PORT_BYTES) + SJA1000_MOD);
164 /* check reset bit */
165 if (!(status & MOD_RM))
166 break;
167 }
168
169 return i;
170}
171
172static void kvaser_pci_del_chan(struct net_device *dev)
173{
174 struct sja1000_priv *priv;
175 struct kvaser_pci *board;
176 int i;
177
178 if (!dev)
179 return;
180 priv = netdev_priv(dev);
181 board = priv->priv;
182 if (!board)
183 return;
184
185 dev_info(&board->pci_dev->dev, "Removing device %s\n",
186 dev->name);
187
188 /* Disable PCI interrupts */
189 kvaser_pci_disable_irq(dev);
190
191 for (i = 0; i < board->no_channels - 1; i++) {
192 if (board->slave_dev[i]) {
193 dev_info(&board->pci_dev->dev, "Removing device %s\n",
194 board->slave_dev[i]->name);
195 unregister_sja1000dev(board->slave_dev[i]);
196 free_sja1000dev(board->slave_dev[i]);
197 }
198 }
199 unregister_sja1000dev(dev);
200
201 pci_iounmap(board->pci_dev, priv->reg_base);
202 pci_iounmap(board->pci_dev, board->conf_addr);
203 pci_iounmap(board->pci_dev, board->res_addr);
204
205 free_sja1000dev(dev);
206}
207
208static int kvaser_pci_add_chan(struct pci_dev *pdev, int channel,
209 struct net_device **master_dev,
210 void __iomem *conf_addr,
211 void __iomem *res_addr,
212 void __iomem *base_addr)
213{
214 struct net_device *dev;
215 struct sja1000_priv *priv;
216 struct kvaser_pci *board;
217 int err;
218
219 dev = alloc_sja1000dev(sizeof(struct kvaser_pci));
220 if (dev == NULL)
221 return -ENOMEM;
222
223 priv = netdev_priv(dev);
224 board = priv->priv;
225
226 board->pci_dev = pdev;
227 board->channel = channel;
228
229 /* S5920 */
230 board->conf_addr = conf_addr;
231
232 /* XILINX board wide address */
233 board->res_addr = res_addr;
234
235 if (channel == 0) {
236 board->xilinx_ver =
237 ioread8(board->res_addr + XILINX_VERINT) >> 4;
238
239 /* Assert PTADR# - we're in passive mode so the other bits are
240 not important */
241 iowrite32(0x80808080UL, board->conf_addr + S5920_PTCR);
242
243 /* Enable interrupts from card */
244 kvaser_pci_enable_irq(dev);
245 } else {
246 struct sja1000_priv *master_priv = netdev_priv(*master_dev);
247 struct kvaser_pci *master_board = master_priv->priv;
248 master_board->slave_dev[channel - 1] = dev;
249 master_board->no_channels = channel + 1;
250 board->xilinx_ver = master_board->xilinx_ver;
251 }
252
253 priv->reg_base = base_addr + channel * KVASER_PCI_PORT_BYTES;
254
255 priv->read_reg = kvaser_pci_read_reg;
256 priv->write_reg = kvaser_pci_write_reg;
257
258 priv->can.clock.freq = KVASER_PCI_CAN_CLOCK;
259
260 priv->ocr = KVASER_PCI_OCR;
261 priv->cdr = KVASER_PCI_CDR;
262
263 priv->irq_flags = IRQF_SHARED;
264 dev->irq = pdev->irq;
265
266 dev_info(&pdev->dev, "reg_base=%p conf_addr=%p irq=%d\n",
267 priv->reg_base, board->conf_addr, dev->irq);
268
269 SET_NETDEV_DEV(dev, &pdev->dev);
270 dev->dev_id = channel;
271
272 /* Register SJA1000 device */
273 err = register_sja1000dev(dev);
274 if (err) {
275 dev_err(&pdev->dev, "Registering device failed (err=%d)\n",
276 err);
277 goto failure;
278 }
279
280 if (channel == 0)
281 *master_dev = dev;
282
283 return 0;
284
285failure:
286 kvaser_pci_del_chan(dev);
287 return err;
288}
289
290static int kvaser_pci_init_one(struct pci_dev *pdev,
291 const struct pci_device_id *ent)
292{
293 int err;
294 struct net_device *master_dev = NULL;
295 struct sja1000_priv *priv;
296 struct kvaser_pci *board;
297 int no_channels;
298 void __iomem *base_addr = NULL;
299 void __iomem *conf_addr = NULL;
300 void __iomem *res_addr = NULL;
301 int i;
302
303 dev_info(&pdev->dev, "initializing device %04x:%04x\n",
304 pdev->vendor, pdev->device);
305
306 err = pci_enable_device(pdev);
307 if (err)
308 goto failure;
309
310 err = pci_request_regions(pdev, DRV_NAME);
311 if (err)
312 goto failure_release_pci;
313
314 /* S5920 */
315 conf_addr = pci_iomap(pdev, 0, PCI_CONFIG_PORT_SIZE);
316 if (conf_addr == NULL) {
317 err = -ENODEV;
318 goto failure_release_regions;
319 }
320
321 /* XILINX board wide address */
322 res_addr = pci_iomap(pdev, 2, PCI_PORT_XILINX_SIZE);
323 if (res_addr == NULL) {
324 err = -ENOMEM;
325 goto failure_iounmap;
326 }
327
328 base_addr = pci_iomap(pdev, 1, PCI_PORT_SIZE);
329 if (base_addr == NULL) {
330 err = -ENOMEM;
331 goto failure_iounmap;
332 }
333
334 no_channels = number_of_sja1000_chip(base_addr);
335 if (no_channels == 0) {
336 err = -ENOMEM;
337 goto failure_iounmap;
338 }
339
340 for (i = 0; i < no_channels; i++) {
341 err = kvaser_pci_add_chan(pdev, i, &master_dev,
342 conf_addr, res_addr,
343 base_addr);
344 if (err)
345 goto failure_cleanup;
346 }
347
348 priv = netdev_priv(master_dev);
349 board = priv->priv;
350
351 dev_info(&pdev->dev, "xilinx version=%d number of channels=%d\n",
352 board->xilinx_ver, board->no_channels);
353
354 pci_set_drvdata(pdev, master_dev);
355 return 0;
356
357failure_cleanup:
358 kvaser_pci_del_chan(master_dev);
359
360failure_iounmap:
361 if (conf_addr != NULL)
362 pci_iounmap(pdev, conf_addr);
363 if (res_addr != NULL)
364 pci_iounmap(pdev, res_addr);
365 if (base_addr != NULL)
366 pci_iounmap(pdev, base_addr);
367
368failure_release_regions:
369 pci_release_regions(pdev);
370
371failure_release_pci:
372 pci_disable_device(pdev);
373
374failure:
375 return err;
376
377}
378
379static void kvaser_pci_remove_one(struct pci_dev *pdev)
380{
381 struct net_device *dev = pci_get_drvdata(pdev);
382
383 kvaser_pci_del_chan(dev);
384
385 pci_release_regions(pdev);
386 pci_disable_device(pdev);
387}
388
389static struct pci_driver kvaser_pci_driver = {
390 .name = DRV_NAME,
391 .id_table = kvaser_pci_tbl,
392 .probe = kvaser_pci_init_one,
393 .remove = kvaser_pci_remove_one,
394};
395
396module_pci_driver(kvaser_pci_driver);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2008 Per Dalen <per.dalen@cnw.se>
4 *
5 * Parts of this software are based on (derived) the following:
6 *
7 * - Kvaser linux driver, version 4.72 BETA
8 * Copyright (C) 2002-2007 KVASER AB
9 *
10 * - Lincan driver, version 0.3.3, OCERA project
11 * Copyright (C) 2004 Pavel Pisa
12 * Copyright (C) 2001 Arnaud Westenberg
13 *
14 * - Socketcan SJA1000 drivers
15 * Copyright (C) 2007 Wolfgang Grandegger <wg@grandegger.com>
16 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
17 * Copyright (c) 2003 Matthias Brukner, Trajet Gmbh, Rebenring 33,
18 * 38106 Braunschweig, GERMANY
19 */
20
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/interrupt.h>
24#include <linux/netdevice.h>
25#include <linux/delay.h>
26#include <linux/pci.h>
27#include <linux/can/dev.h>
28#include <linux/io.h>
29
30#include "sja1000.h"
31
32#define DRV_NAME "kvaser_pci"
33
34MODULE_AUTHOR("Per Dalen <per.dalen@cnw.se>");
35MODULE_DESCRIPTION("Socket-CAN driver for KVASER PCAN PCI cards");
36MODULE_SUPPORTED_DEVICE("KVASER PCAN PCI CAN card");
37MODULE_LICENSE("GPL v2");
38
39#define MAX_NO_OF_CHANNELS 4 /* max no of channels on a single card */
40
41struct kvaser_pci {
42 int channel;
43 struct pci_dev *pci_dev;
44 struct net_device *slave_dev[MAX_NO_OF_CHANNELS-1];
45 void __iomem *conf_addr;
46 void __iomem *res_addr;
47 int no_channels;
48 u8 xilinx_ver;
49};
50
51#define KVASER_PCI_CAN_CLOCK (16000000 / 2)
52
53/*
54 * The board configuration is probably following:
55 * RX1 is connected to ground.
56 * TX1 is not connected.
57 * CLKO is not connected.
58 * Setting the OCR register to 0xDA is a good idea.
59 * This means normal output mode , push-pull and the correct polarity.
60 */
61#define KVASER_PCI_OCR (OCR_TX0_PUSHPULL | OCR_TX1_PUSHPULL)
62
63/*
64 * In the CDR register, you should set CBP to 1.
65 * You will probably also want to set the clock divider value to 0
66 * (meaning divide-by-2), the Pelican bit, and the clock-off bit
67 * (you will have no need for CLKOUT anyway).
68 */
69#define KVASER_PCI_CDR (CDR_CBP | CDR_CLKOUT_MASK)
70
71/*
72 * These register values are valid for revision 14 of the Xilinx logic.
73 */
74#define XILINX_VERINT 7 /* Lower nibble simulate interrupts,
75 high nibble version number. */
76
77#define XILINX_PRESUMED_VERSION 14
78
79/*
80 * Important S5920 registers
81 */
82#define S5920_INTCSR 0x38
83#define S5920_PTCR 0x60
84#define INTCSR_ADDON_INTENABLE_M 0x2000
85
86
87#define KVASER_PCI_PORT_BYTES 0x20
88
89#define PCI_CONFIG_PORT_SIZE 0x80 /* size of the config io-memory */
90#define PCI_PORT_SIZE 0x80 /* size of a channel io-memory */
91#define PCI_PORT_XILINX_SIZE 0x08 /* size of a xilinx io-memory */
92
93#define KVASER_PCI_VENDOR_ID1 0x10e8 /* the PCI device and vendor IDs */
94#define KVASER_PCI_DEVICE_ID1 0x8406
95
96#define KVASER_PCI_VENDOR_ID2 0x1a07 /* the PCI device and vendor IDs */
97#define KVASER_PCI_DEVICE_ID2 0x0008
98
99static const struct pci_device_id kvaser_pci_tbl[] = {
100 {KVASER_PCI_VENDOR_ID1, KVASER_PCI_DEVICE_ID1, PCI_ANY_ID, PCI_ANY_ID,},
101 {KVASER_PCI_VENDOR_ID2, KVASER_PCI_DEVICE_ID2, PCI_ANY_ID, PCI_ANY_ID,},
102 { 0,}
103};
104
105MODULE_DEVICE_TABLE(pci, kvaser_pci_tbl);
106
107static u8 kvaser_pci_read_reg(const struct sja1000_priv *priv, int port)
108{
109 return ioread8(priv->reg_base + port);
110}
111
112static void kvaser_pci_write_reg(const struct sja1000_priv *priv,
113 int port, u8 val)
114{
115 iowrite8(val, priv->reg_base + port);
116}
117
118static void kvaser_pci_disable_irq(struct net_device *dev)
119{
120 struct sja1000_priv *priv = netdev_priv(dev);
121 struct kvaser_pci *board = priv->priv;
122 u32 intcsr;
123
124 /* Disable interrupts from card */
125 intcsr = ioread32(board->conf_addr + S5920_INTCSR);
126 intcsr &= ~INTCSR_ADDON_INTENABLE_M;
127 iowrite32(intcsr, board->conf_addr + S5920_INTCSR);
128}
129
130static void kvaser_pci_enable_irq(struct net_device *dev)
131{
132 struct sja1000_priv *priv = netdev_priv(dev);
133 struct kvaser_pci *board = priv->priv;
134 u32 tmp_en_io;
135
136 /* Enable interrupts from card */
137 tmp_en_io = ioread32(board->conf_addr + S5920_INTCSR);
138 tmp_en_io |= INTCSR_ADDON_INTENABLE_M;
139 iowrite32(tmp_en_io, board->conf_addr + S5920_INTCSR);
140}
141
142static int number_of_sja1000_chip(void __iomem *base_addr)
143{
144 u8 status;
145 int i;
146
147 for (i = 0; i < MAX_NO_OF_CHANNELS; i++) {
148 /* reset chip */
149 iowrite8(MOD_RM, base_addr +
150 (i * KVASER_PCI_PORT_BYTES) + SJA1000_MOD);
151 status = ioread8(base_addr +
152 (i * KVASER_PCI_PORT_BYTES) + SJA1000_MOD);
153 /* check reset bit */
154 if (!(status & MOD_RM))
155 break;
156 }
157
158 return i;
159}
160
161static void kvaser_pci_del_chan(struct net_device *dev)
162{
163 struct sja1000_priv *priv;
164 struct kvaser_pci *board;
165 int i;
166
167 if (!dev)
168 return;
169 priv = netdev_priv(dev);
170 board = priv->priv;
171 if (!board)
172 return;
173
174 dev_info(&board->pci_dev->dev, "Removing device %s\n",
175 dev->name);
176
177 /* Disable PCI interrupts */
178 kvaser_pci_disable_irq(dev);
179
180 for (i = 0; i < board->no_channels - 1; i++) {
181 if (board->slave_dev[i]) {
182 dev_info(&board->pci_dev->dev, "Removing device %s\n",
183 board->slave_dev[i]->name);
184 unregister_sja1000dev(board->slave_dev[i]);
185 free_sja1000dev(board->slave_dev[i]);
186 }
187 }
188 unregister_sja1000dev(dev);
189
190 pci_iounmap(board->pci_dev, priv->reg_base);
191 pci_iounmap(board->pci_dev, board->conf_addr);
192 pci_iounmap(board->pci_dev, board->res_addr);
193
194 free_sja1000dev(dev);
195}
196
197static int kvaser_pci_add_chan(struct pci_dev *pdev, int channel,
198 struct net_device **master_dev,
199 void __iomem *conf_addr,
200 void __iomem *res_addr,
201 void __iomem *base_addr)
202{
203 struct net_device *dev;
204 struct sja1000_priv *priv;
205 struct kvaser_pci *board;
206 int err;
207
208 dev = alloc_sja1000dev(sizeof(struct kvaser_pci));
209 if (dev == NULL)
210 return -ENOMEM;
211
212 priv = netdev_priv(dev);
213 board = priv->priv;
214
215 board->pci_dev = pdev;
216 board->channel = channel;
217
218 /* S5920 */
219 board->conf_addr = conf_addr;
220
221 /* XILINX board wide address */
222 board->res_addr = res_addr;
223
224 if (channel == 0) {
225 board->xilinx_ver =
226 ioread8(board->res_addr + XILINX_VERINT) >> 4;
227
228 /* Assert PTADR# - we're in passive mode so the other bits are
229 not important */
230 iowrite32(0x80808080UL, board->conf_addr + S5920_PTCR);
231
232 /* Enable interrupts from card */
233 kvaser_pci_enable_irq(dev);
234 } else {
235 struct sja1000_priv *master_priv = netdev_priv(*master_dev);
236 struct kvaser_pci *master_board = master_priv->priv;
237 master_board->slave_dev[channel - 1] = dev;
238 master_board->no_channels = channel + 1;
239 board->xilinx_ver = master_board->xilinx_ver;
240 }
241
242 priv->reg_base = base_addr + channel * KVASER_PCI_PORT_BYTES;
243
244 priv->read_reg = kvaser_pci_read_reg;
245 priv->write_reg = kvaser_pci_write_reg;
246
247 priv->can.clock.freq = KVASER_PCI_CAN_CLOCK;
248
249 priv->ocr = KVASER_PCI_OCR;
250 priv->cdr = KVASER_PCI_CDR;
251
252 priv->irq_flags = IRQF_SHARED;
253 dev->irq = pdev->irq;
254
255 dev_info(&pdev->dev, "reg_base=%p conf_addr=%p irq=%d\n",
256 priv->reg_base, board->conf_addr, dev->irq);
257
258 SET_NETDEV_DEV(dev, &pdev->dev);
259 dev->dev_id = channel;
260
261 /* Register SJA1000 device */
262 err = register_sja1000dev(dev);
263 if (err) {
264 dev_err(&pdev->dev, "Registering device failed (err=%d)\n",
265 err);
266 goto failure;
267 }
268
269 if (channel == 0)
270 *master_dev = dev;
271
272 return 0;
273
274failure:
275 kvaser_pci_del_chan(dev);
276 return err;
277}
278
279static int kvaser_pci_init_one(struct pci_dev *pdev,
280 const struct pci_device_id *ent)
281{
282 int err;
283 struct net_device *master_dev = NULL;
284 struct sja1000_priv *priv;
285 struct kvaser_pci *board;
286 int no_channels;
287 void __iomem *base_addr = NULL;
288 void __iomem *conf_addr = NULL;
289 void __iomem *res_addr = NULL;
290 int i;
291
292 dev_info(&pdev->dev, "initializing device %04x:%04x\n",
293 pdev->vendor, pdev->device);
294
295 err = pci_enable_device(pdev);
296 if (err)
297 goto failure;
298
299 err = pci_request_regions(pdev, DRV_NAME);
300 if (err)
301 goto failure_release_pci;
302
303 /* S5920 */
304 conf_addr = pci_iomap(pdev, 0, PCI_CONFIG_PORT_SIZE);
305 if (conf_addr == NULL) {
306 err = -ENODEV;
307 goto failure_release_regions;
308 }
309
310 /* XILINX board wide address */
311 res_addr = pci_iomap(pdev, 2, PCI_PORT_XILINX_SIZE);
312 if (res_addr == NULL) {
313 err = -ENOMEM;
314 goto failure_iounmap;
315 }
316
317 base_addr = pci_iomap(pdev, 1, PCI_PORT_SIZE);
318 if (base_addr == NULL) {
319 err = -ENOMEM;
320 goto failure_iounmap;
321 }
322
323 no_channels = number_of_sja1000_chip(base_addr);
324 if (no_channels == 0) {
325 err = -ENOMEM;
326 goto failure_iounmap;
327 }
328
329 for (i = 0; i < no_channels; i++) {
330 err = kvaser_pci_add_chan(pdev, i, &master_dev,
331 conf_addr, res_addr,
332 base_addr);
333 if (err)
334 goto failure_cleanup;
335 }
336
337 priv = netdev_priv(master_dev);
338 board = priv->priv;
339
340 dev_info(&pdev->dev, "xilinx version=%d number of channels=%d\n",
341 board->xilinx_ver, board->no_channels);
342
343 pci_set_drvdata(pdev, master_dev);
344 return 0;
345
346failure_cleanup:
347 kvaser_pci_del_chan(master_dev);
348
349failure_iounmap:
350 if (conf_addr != NULL)
351 pci_iounmap(pdev, conf_addr);
352 if (res_addr != NULL)
353 pci_iounmap(pdev, res_addr);
354 if (base_addr != NULL)
355 pci_iounmap(pdev, base_addr);
356
357failure_release_regions:
358 pci_release_regions(pdev);
359
360failure_release_pci:
361 pci_disable_device(pdev);
362
363failure:
364 return err;
365
366}
367
368static void kvaser_pci_remove_one(struct pci_dev *pdev)
369{
370 struct net_device *dev = pci_get_drvdata(pdev);
371
372 kvaser_pci_del_chan(dev);
373
374 pci_release_regions(pdev);
375 pci_disable_device(pdev);
376}
377
378static struct pci_driver kvaser_pci_driver = {
379 .name = DRV_NAME,
380 .id_table = kvaser_pci_tbl,
381 .probe = kvaser_pci_init_one,
382 .remove = kvaser_pci_remove_one,
383};
384
385module_pci_driver(kvaser_pci_driver);