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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 07:25:22 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 07:25:22 -0400
commit8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22 (patch)
treea0a63398a9983667d52cbbbf4e2405b4f22b1d83 /drivers/net/can/sja1000
parent1be025d3cb40cd295123af2c394f7229ef9b30ca (diff)
parent8b3408f8ee994973869d8ba32c5bf482bc4ddca4 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits) dp83640: free packet queues on remove dp83640: use proper function to free transmit time stamping packets ipv6: Do not use routes from locally generated RAs |PATCH net-next] tg3: add tx_dropped counter be2net: don't create multiple RX/TX rings in multi channel mode be2net: don't create multiple TXQs in BE2 be2net: refactor VF setup/teardown code into be_vf_setup/clear() be2net: add vlan/rx-mode/flow-control config to be_setup() net_sched: cls_flow: use skb_header_pointer() ipv4: avoid useless call of the function check_peer_pmtu TCP: remove TCP_DEBUG net: Fix driver name for mdio-gpio.c ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces ipv4: fix ipsec forward performance regression jme: fix irq storm after suspend/resume route: fix ICMP redirect validation net: hold sock reference while processing tx timestamps tcp: md5: add more const attributes Add ethtool -g support to virtio_net ... Fix up conflicts in: - drivers/net/Kconfig: The split-up generated a trivial conflict with removal of a stale reference to Documentation/networking/net-modules.txt. Remove it from the new location instead. - fs/sysfs/dir.c: Fairly nasty conflicts with the sysfs rb-tree usage, conflicting with Eric Biederman's changes for tagged directories.
Diffstat (limited to 'drivers/net/can/sja1000')
-rw-r--r--drivers/net/can/sja1000/Kconfig14
-rw-r--r--drivers/net/can/sja1000/Makefile2
-rw-r--r--drivers/net/can/sja1000/ems_pcmcia.c331
-rw-r--r--drivers/net/can/sja1000/peak_pci.c291
-rw-r--r--drivers/net/can/sja1000/sja1000.c2
-rw-r--r--drivers/net/can/sja1000/sja1000.h2
6 files changed, 638 insertions, 4 deletions
diff --git a/drivers/net/can/sja1000/Kconfig b/drivers/net/can/sja1000/Kconfig
index 6fdc031daaa..fe9e64d476e 100644
--- a/drivers/net/can/sja1000/Kconfig
+++ b/drivers/net/can/sja1000/Kconfig
@@ -29,6 +29,13 @@ config CAN_SJA1000_OF_PLATFORM
29 OpenFirmware bindings, e.g. if you have a PowerPC based system 29 OpenFirmware bindings, e.g. if you have a PowerPC based system
30 you may want to enable this option. 30 you may want to enable this option.
31 31
32config CAN_EMS_PCMCIA
33 tristate "EMS CPC-CARD Card"
34 depends on PCMCIA
35 ---help---
36 This driver is for the one or two channel CPC-CARD cards from
37 EMS Dr. Thomas Wuensche (http://www.ems-wuensche.de).
38
32config CAN_EMS_PCI 39config CAN_EMS_PCI
33 tristate "EMS CPC-PCI, CPC-PCIe and CPC-104P Card" 40 tristate "EMS CPC-PCI, CPC-PCIe and CPC-104P Card"
34 depends on PCI 41 depends on PCI
@@ -37,6 +44,13 @@ config CAN_EMS_PCI
37 CPC-PCIe and CPC-104P cards from EMS Dr. Thomas Wuensche 44 CPC-PCIe and CPC-104P cards from EMS Dr. Thomas Wuensche
38 (http://www.ems-wuensche.de). 45 (http://www.ems-wuensche.de).
39 46
47config CAN_PEAK_PCI
48 tristate "PEAK PCAN PCI/PCIe Cards"
49 depends on PCI
50 ---help---
51 This driver is for the PCAN PCI/PCIe cards (1, 2, 3 or 4 channels)
52 from PEAK Systems (http://www.peak-system.com).
53
40config CAN_KVASER_PCI 54config CAN_KVASER_PCI
41 tristate "Kvaser PCIcanx and Kvaser PCIcan PCI Cards" 55 tristate "Kvaser PCIcanx and Kvaser PCIcan PCI Cards"
42 depends on PCI 56 depends on PCI
diff --git a/drivers/net/can/sja1000/Makefile b/drivers/net/can/sja1000/Makefile
index 2c591eb321c..0604f240c8b 100644
--- a/drivers/net/can/sja1000/Makefile
+++ b/drivers/net/can/sja1000/Makefile
@@ -6,8 +6,10 @@ obj-$(CONFIG_CAN_SJA1000) += sja1000.o
6obj-$(CONFIG_CAN_SJA1000_ISA) += sja1000_isa.o 6obj-$(CONFIG_CAN_SJA1000_ISA) += sja1000_isa.o
7obj-$(CONFIG_CAN_SJA1000_PLATFORM) += sja1000_platform.o 7obj-$(CONFIG_CAN_SJA1000_PLATFORM) += sja1000_platform.o
8obj-$(CONFIG_CAN_SJA1000_OF_PLATFORM) += sja1000_of_platform.o 8obj-$(CONFIG_CAN_SJA1000_OF_PLATFORM) += sja1000_of_platform.o
9obj-$(CONFIG_CAN_EMS_PCMCIA) += ems_pcmcia.o
9obj-$(CONFIG_CAN_EMS_PCI) += ems_pci.o 10obj-$(CONFIG_CAN_EMS_PCI) += ems_pci.o
10obj-$(CONFIG_CAN_KVASER_PCI) += kvaser_pci.o 11obj-$(CONFIG_CAN_KVASER_PCI) += kvaser_pci.o
12obj-$(CONFIG_CAN_PEAK_PCI) += peak_pci.o
11obj-$(CONFIG_CAN_PLX_PCI) += plx_pci.o 13obj-$(CONFIG_CAN_PLX_PCI) += plx_pci.o
12obj-$(CONFIG_CAN_TSCAN1) += tscan1.o 14obj-$(CONFIG_CAN_TSCAN1) += tscan1.o
13 15
diff --git a/drivers/net/can/sja1000/ems_pcmcia.c b/drivers/net/can/sja1000/ems_pcmcia.c
new file mode 100644
index 00000000000..075a5457a19
--- /dev/null
+++ b/drivers/net/can/sja1000/ems_pcmcia.c
@@ -0,0 +1,331 @@
1/*
2 * Copyright (C) 2008 Sebastian Haas (initial chardev implementation)
3 * Copyright (C) 2010 Markus Plessing <plessing@ems-wuensche.com>
4 * Rework for mainline by Oliver Hartkopp <socketcan@hartkopp.net>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the version 2 of the GNU General Public License
8 * as published by the Free Software Foundation
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/interrupt.h>
19#include <linux/netdevice.h>
20#include <linux/delay.h>
21#include <linux/io.h>
22#include <pcmcia/cistpl.h>
23#include <pcmcia/ds.h>
24#include <linux/can.h>
25#include <linux/can/dev.h>
26#include "sja1000.h"
27
28#define DRV_NAME "ems_pcmcia"
29
30MODULE_AUTHOR("Markus Plessing <plessing@ems-wuensche.com>");
31MODULE_DESCRIPTION("Socket-CAN driver for EMS CPC-CARD cards");
32MODULE_SUPPORTED_DEVICE("EMS CPC-CARD CAN card");
33MODULE_LICENSE("GPL v2");
34
35#define EMS_PCMCIA_MAX_CHAN 2
36
37struct ems_pcmcia_card {
38 int channels;
39 struct pcmcia_device *pcmcia_dev;
40 struct net_device *net_dev[EMS_PCMCIA_MAX_CHAN];
41 void __iomem *base_addr;
42};
43
44#define EMS_PCMCIA_CAN_CLOCK (16000000 / 2)
45
46/*
47 * The board configuration is probably following:
48 * RX1 is connected to ground.
49 * TX1 is not connected.
50 * CLKO is not connected.
51 * Setting the OCR register to 0xDA is a good idea.
52 * This means normal output mode , push-pull and the correct polarity.
53 */
54#define EMS_PCMCIA_OCR (OCR_TX0_PUSHPULL | OCR_TX1_PUSHPULL)
55
56/*
57 * In the CDR register, you should set CBP to 1.
58 * You will probably also want to set the clock divider value to 7
59 * (meaning direct oscillator output) because the second SJA1000 chip
60 * is driven by the first one CLKOUT output.
61 */
62#define EMS_PCMCIA_CDR (CDR_CBP | CDR_CLKOUT_MASK)
63#define EMS_PCMCIA_MEM_SIZE 4096 /* Size of the remapped io-memory */
64#define EMS_PCMCIA_CAN_BASE_OFFSET 0x100 /* Offset where controllers starts */
65#define EMS_PCMCIA_CAN_CTRL_SIZE 0x80 /* Memory size for each controller */
66
67#define EMS_CMD_RESET 0x00 /* Perform a reset of the card */
68#define EMS_CMD_MAP 0x03 /* Map CAN controllers into card' memory */
69#define EMS_CMD_UMAP 0x02 /* Unmap CAN controllers from card' memory */
70
71static struct pcmcia_device_id ems_pcmcia_tbl[] = {
72 PCMCIA_DEVICE_PROD_ID123("EMS_T_W", "CPC-Card", "V2.0", 0xeab1ea23,
73 0xa338573f, 0xe4575800),
74 PCMCIA_DEVICE_NULL,
75};
76
77MODULE_DEVICE_TABLE(pcmcia, ems_pcmcia_tbl);
78
79static u8 ems_pcmcia_read_reg(const struct sja1000_priv *priv, int port)
80{
81 return readb(priv->reg_base + port);
82}
83
84static void ems_pcmcia_write_reg(const struct sja1000_priv *priv, int port,
85 u8 val)
86{
87 writeb(val, priv->reg_base + port);
88}
89
90static irqreturn_t ems_pcmcia_interrupt(int irq, void *dev_id)
91{
92 struct ems_pcmcia_card *card = dev_id;
93 struct net_device *dev;
94 irqreturn_t retval = IRQ_NONE;
95 int i, again;
96
97 /* Card not present */
98 if (readw(card->base_addr) != 0xAA55)
99 return IRQ_HANDLED;
100
101 do {
102 again = 0;
103
104 /* Check interrupt for each channel */
105 for (i = 0; i < card->channels; i++) {
106 dev = card->net_dev[i];
107 if (!dev)
108 continue;
109
110 if (sja1000_interrupt(irq, dev) == IRQ_HANDLED)
111 again = 1;
112 }
113 /* At least one channel handled the interrupt */
114 if (again)
115 retval = IRQ_HANDLED;
116
117 } while (again);
118
119 return retval;
120}
121
122/*
123 * Check if a CAN controller is present at the specified location
124 * by trying to set 'em into the PeliCAN mode
125 */
126static inline int ems_pcmcia_check_chan(struct sja1000_priv *priv)
127{
128 /* Make sure SJA1000 is in reset mode */
129 ems_pcmcia_write_reg(priv, REG_MOD, 1);
130 ems_pcmcia_write_reg(priv, REG_CDR, CDR_PELICAN);
131
132 /* read reset-values */
133 if (ems_pcmcia_read_reg(priv, REG_CDR) == CDR_PELICAN)
134 return 1;
135
136 return 0;
137}
138
139static void ems_pcmcia_del_card(struct pcmcia_device *pdev)
140{
141 struct ems_pcmcia_card *card = pdev->priv;
142 struct net_device *dev;
143 int i;
144
145 free_irq(pdev->irq, card);
146
147 for (i = 0; i < card->channels; i++) {
148 dev = card->net_dev[i];
149 if (!dev)
150 continue;
151
152 printk(KERN_INFO "%s: removing %s on channel #%d\n",
153 DRV_NAME, dev->name, i);
154 unregister_sja1000dev(dev);
155 free_sja1000dev(dev);
156 }
157
158 writeb(EMS_CMD_UMAP, card->base_addr);
159 iounmap(card->base_addr);
160 kfree(card);
161
162 pdev->priv = NULL;
163}
164
165/*
166 * Probe PCI device for EMS CAN signature and register each available
167 * CAN channel to SJA1000 Socket-CAN subsystem.
168 */
169static int __devinit ems_pcmcia_add_card(struct pcmcia_device *pdev,
170 unsigned long base)
171{
172 struct sja1000_priv *priv;
173 struct net_device *dev;
174 struct ems_pcmcia_card *card;
175 int err, i;
176
177 /* Allocating card structures to hold addresses, ... */
178 card = kzalloc(sizeof(struct ems_pcmcia_card), GFP_KERNEL);
179 if (!card)
180 return -ENOMEM;
181
182 pdev->priv = card;
183 card->channels = 0;
184
185 card->base_addr = ioremap(base, EMS_PCMCIA_MEM_SIZE);
186 if (!card->base_addr) {
187 err = -ENOMEM;
188 goto failure_cleanup;
189 }
190
191 /* Check for unique EMS CAN signature */
192 if (readw(card->base_addr) != 0xAA55) {
193 err = -ENODEV;
194 goto failure_cleanup;
195 }
196
197 /* Request board reset */
198 writeb(EMS_CMD_RESET, card->base_addr);
199
200 /* Make sure CAN controllers are mapped into card's memory space */
201 writeb(EMS_CMD_MAP, card->base_addr);
202
203 /* Detect available channels */
204 for (i = 0; i < EMS_PCMCIA_MAX_CHAN; i++) {
205 dev = alloc_sja1000dev(0);
206 if (!dev) {
207 err = -ENOMEM;
208 goto failure_cleanup;
209 }
210
211 card->net_dev[i] = dev;
212 priv = netdev_priv(dev);
213 priv->priv = card;
214 SET_NETDEV_DEV(dev, &pdev->dev);
215
216 priv->irq_flags = IRQF_SHARED;
217 dev->irq = pdev->irq;
218 priv->reg_base = card->base_addr + EMS_PCMCIA_CAN_BASE_OFFSET +
219 (i * EMS_PCMCIA_CAN_CTRL_SIZE);
220
221 /* Check if channel is present */
222 if (ems_pcmcia_check_chan(priv)) {
223 priv->read_reg = ems_pcmcia_read_reg;
224 priv->write_reg = ems_pcmcia_write_reg;
225 priv->can.clock.freq = EMS_PCMCIA_CAN_CLOCK;
226 priv->ocr = EMS_PCMCIA_OCR;
227 priv->cdr = EMS_PCMCIA_CDR;
228 priv->flags |= SJA1000_CUSTOM_IRQ_HANDLER;
229
230 /* Register SJA1000 device */
231 err = register_sja1000dev(dev);
232 if (err) {
233 free_sja1000dev(dev);
234 goto failure_cleanup;
235 }
236
237 card->channels++;
238
239 printk(KERN_INFO "%s: registered %s on channel "
240 "#%d at 0x%p, irq %d\n", DRV_NAME, dev->name,
241 i, priv->reg_base, dev->irq);
242 } else
243 free_sja1000dev(dev);
244 }
245
246 err = request_irq(dev->irq, &ems_pcmcia_interrupt, IRQF_SHARED,
247 DRV_NAME, card);
248 if (!err)
249 return 0;
250
251failure_cleanup:
252 ems_pcmcia_del_card(pdev);
253 return err;
254}
255
256/*
257 * Setup PCMCIA socket and probe for EMS CPC-CARD
258 */
259static int __devinit ems_pcmcia_probe(struct pcmcia_device *dev)
260{
261 int csval;
262
263 /* General socket configuration */
264 dev->config_flags |= CONF_ENABLE_IRQ;
265 dev->config_index = 1;
266 dev->config_regs = PRESENT_OPTION;
267
268 /* The io structure describes IO port mapping */
269 dev->resource[0]->end = 16;
270 dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
271 dev->resource[1]->end = 16;
272 dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_16;
273 dev->io_lines = 5;
274
275 /* Allocate a memory window */
276 dev->resource[2]->flags =
277 (WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE);
278 dev->resource[2]->start = dev->resource[2]->end = 0;
279
280 csval = pcmcia_request_window(dev, dev->resource[2], 0);
281 if (csval) {
282 dev_err(&dev->dev, "pcmcia_request_window failed (err=%d)\n",
283 csval);
284 return 0;
285 }
286
287 csval = pcmcia_map_mem_page(dev, dev->resource[2], dev->config_base);
288 if (csval) {
289 dev_err(&dev->dev, "pcmcia_map_mem_page failed (err=%d)\n",
290 csval);
291 return 0;
292 }
293
294 csval = pcmcia_enable_device(dev);
295 if (csval) {
296 dev_err(&dev->dev, "pcmcia_enable_device failed (err=%d)\n",
297 csval);
298 return 0;
299 }
300
301 ems_pcmcia_add_card(dev, dev->resource[2]->start);
302 return 0;
303}
304
305/*
306 * Release claimed resources
307 */
308static void ems_pcmcia_remove(struct pcmcia_device *dev)
309{
310 ems_pcmcia_del_card(dev);
311 pcmcia_disable_device(dev);
312}
313
314static struct pcmcia_driver ems_pcmcia_driver = {
315 .name = DRV_NAME,
316 .probe = ems_pcmcia_probe,
317 .remove = ems_pcmcia_remove,
318 .id_table = ems_pcmcia_tbl,
319};
320
321static int __init ems_pcmcia_init(void)
322{
323 return pcmcia_register_driver(&ems_pcmcia_driver);
324}
325module_init(ems_pcmcia_init);
326
327static void __exit ems_pcmcia_exit(void)
328{
329 pcmcia_unregister_driver(&ems_pcmcia_driver);
330}
331module_exit(ems_pcmcia_exit);
diff --git a/drivers/net/can/sja1000/peak_pci.c b/drivers/net/can/sja1000/peak_pci.c
new file mode 100644
index 00000000000..905bce0b3a4
--- /dev/null
+++ b/drivers/net/can/sja1000/peak_pci.c
@@ -0,0 +1,291 @@
1/*
2 * Copyright (C) 2007, 2011 Wolfgang Grandegger <wg@grandegger.com>
3 *
4 * Derived from the PCAN project file driver/src/pcan_pci.c:
5 *
6 * Copyright (C) 2001-2006 PEAK System-Technik GmbH
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the version 2 of the GNU General Public License
10 * as published by the Free Software Foundation
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software Foundation,
19 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 */
21
22#include <linux/kernel.h>
23#include <linux/version.h>
24#include <linux/module.h>
25#include <linux/interrupt.h>
26#include <linux/netdevice.h>
27#include <linux/delay.h>
28#include <linux/pci.h>
29#include <linux/io.h>
30#include <linux/can.h>
31#include <linux/can/dev.h>
32
33#include "sja1000.h"
34
35MODULE_AUTHOR("Wolfgang Grandegger <wg@grandegger.com>");
36MODULE_DESCRIPTION("Socket-CAN driver for PEAK PCAN PCI/PCIe cards");
37MODULE_SUPPORTED_DEVICE("PEAK PCAN PCI/PCIe CAN card");
38MODULE_LICENSE("GPL v2");
39
40#define DRV_NAME "peak_pci"
41
42struct peak_pci_chan {
43 void __iomem *cfg_base; /* Common for all channels */
44 struct net_device *next_dev; /* Chain of network devices */
45 u16 icr_mask; /* Interrupt mask for fast ack */
46};
47
48#define PEAK_PCI_CAN_CLOCK (16000000 / 2)
49
50#define PEAK_PCI_CDR (CDR_CBP | CDR_CLKOUT_MASK)
51#define PEAK_PCI_OCR OCR_TX0_PUSHPULL
52
53/*
54 * Important PITA registers
55 */
56#define PITA_ICR 0x00 /* Interrupt control register */
57#define PITA_GPIOICR 0x18 /* GPIO interface control register */
58#define PITA_MISC 0x1C /* Miscellaneous register */
59
60#define PEAK_PCI_CFG_SIZE 0x1000 /* Size of the config PCI bar */
61#define PEAK_PCI_CHAN_SIZE 0x0400 /* Size used by the channel */
62
63#define PEAK_PCI_VENDOR_ID 0x001C /* The PCI device and vendor IDs */
64#define PEAK_PCI_DEVICE_ID 0x0001 /* for PCI/PCIe slot cards */
65
66static const u16 peak_pci_icr_masks[] = {0x02, 0x01, 0x40, 0x80};
67
68static DEFINE_PCI_DEVICE_TABLE(peak_pci_tbl) = {
69 {PEAK_PCI_VENDOR_ID, PEAK_PCI_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
70 {0,}
71};
72
73MODULE_DEVICE_TABLE(pci, peak_pci_tbl);
74
75static u8 peak_pci_read_reg(const struct sja1000_priv *priv, int port)
76{
77 return readb(priv->reg_base + (port << 2));
78}
79
80static void peak_pci_write_reg(const struct sja1000_priv *priv,
81 int port, u8 val)
82{
83 writeb(val, priv->reg_base + (port << 2));
84}
85
86static void peak_pci_post_irq(const struct sja1000_priv *priv)
87{
88 struct peak_pci_chan *chan = priv->priv;
89 u16 icr;
90
91 /* Select and clear in PITA stored interrupt */
92 icr = readw(chan->cfg_base + PITA_ICR);
93 if (icr & chan->icr_mask)
94 writew(chan->icr_mask, chan->cfg_base + PITA_ICR);
95}
96
97static int __devinit peak_pci_probe(struct pci_dev *pdev,
98 const struct pci_device_id *ent)
99{
100 struct sja1000_priv *priv;
101 struct peak_pci_chan *chan;
102 struct net_device *dev, *dev0 = NULL;
103 void __iomem *cfg_base, *reg_base;
104 u16 sub_sys_id, icr;
105 int i, err, channels;
106
107 err = pci_enable_device(pdev);
108 if (err)
109 return err;
110
111 err = pci_request_regions(pdev, DRV_NAME);
112 if (err)
113 goto failure_disable_pci;
114
115 err = pci_read_config_word(pdev, 0x2e, &sub_sys_id);
116 if (err)
117 goto failure_release_regions;
118
119 dev_dbg(&pdev->dev, "probing device %04x:%04x:%04x\n",
120 pdev->vendor, pdev->device, sub_sys_id);
121
122 err = pci_write_config_word(pdev, 0x44, 0);
123 if (err)
124 goto failure_release_regions;
125
126 if (sub_sys_id >= 12)
127 channels = 4;
128 else if (sub_sys_id >= 10)
129 channels = 3;
130 else if (sub_sys_id >= 4)
131 channels = 2;
132 else
133 channels = 1;
134
135 cfg_base = pci_iomap(pdev, 0, PEAK_PCI_CFG_SIZE);
136 if (!cfg_base) {
137 dev_err(&pdev->dev, "failed to map PCI resource #0\n");
138 goto failure_release_regions;
139 }
140
141 reg_base = pci_iomap(pdev, 1, PEAK_PCI_CHAN_SIZE * channels);
142 if (!reg_base) {
143 dev_err(&pdev->dev, "failed to map PCI resource #1\n");
144 goto failure_unmap_cfg_base;
145 }
146
147 /* Set GPIO control register */
148 writew(0x0005, cfg_base + PITA_GPIOICR + 2);
149 /* Enable all channels of this card */
150 writeb(0x00, cfg_base + PITA_GPIOICR);
151 /* Toggle reset */
152 writeb(0x05, cfg_base + PITA_MISC + 3);
153 mdelay(5);
154 /* Leave parport mux mode */
155 writeb(0x04, cfg_base + PITA_MISC + 3);
156
157 icr = readw(cfg_base + PITA_ICR + 2);
158
159 for (i = 0; i < channels; i++) {
160 dev = alloc_sja1000dev(sizeof(struct peak_pci_chan));
161 if (!dev) {
162 err = -ENOMEM;
163 goto failure_remove_channels;
164 }
165
166 priv = netdev_priv(dev);
167 chan = priv->priv;
168
169 chan->cfg_base = cfg_base;
170 priv->reg_base = reg_base + i * PEAK_PCI_CHAN_SIZE;
171
172 priv->read_reg = peak_pci_read_reg;
173 priv->write_reg = peak_pci_write_reg;
174 priv->post_irq = peak_pci_post_irq;
175
176 priv->can.clock.freq = PEAK_PCI_CAN_CLOCK;
177 priv->ocr = PEAK_PCI_OCR;
178 priv->cdr = PEAK_PCI_CDR;
179 /* Neither a slave nor a single device distributes the clock */
180 if (channels == 1 || i > 0)
181 priv->cdr |= CDR_CLK_OFF;
182
183 /* Setup interrupt handling */
184 priv->irq_flags = IRQF_SHARED;
185 dev->irq = pdev->irq;
186
187 chan->icr_mask = peak_pci_icr_masks[i];
188 icr |= chan->icr_mask;
189
190 SET_NETDEV_DEV(dev, &pdev->dev);
191
192 err = register_sja1000dev(dev);
193 if (err) {
194 dev_err(&pdev->dev, "failed to register device\n");
195 free_sja1000dev(dev);
196 goto failure_remove_channels;
197 }
198
199 /* Create chain of SJA1000 devices */
200 if (i == 0)
201 dev0 = dev;
202 else
203 chan->next_dev = dev;
204
205 dev_info(&pdev->dev,
206 "%s at reg_base=0x%p cfg_base=0x%p irq=%d\n",
207 dev->name, priv->reg_base, chan->cfg_base, dev->irq);
208 }
209
210 pci_set_drvdata(pdev, dev0);
211
212 /* Enable interrupts */
213 writew(icr, cfg_base + PITA_ICR + 2);
214
215 return 0;
216
217failure_remove_channels:
218 /* Disable interrupts */
219 writew(0x0, cfg_base + PITA_ICR + 2);
220
221 for (dev = dev0; dev; dev = chan->next_dev) {
222 unregister_sja1000dev(dev);
223 free_sja1000dev(dev);
224 priv = netdev_priv(dev);
225 chan = priv->priv;
226 dev = chan->next_dev;
227 }
228
229 pci_iounmap(pdev, reg_base);
230
231failure_unmap_cfg_base:
232 pci_iounmap(pdev, cfg_base);
233
234failure_release_regions:
235 pci_release_regions(pdev);
236
237failure_disable_pci:
238 pci_disable_device(pdev);
239
240 return err;
241}
242
243static void __devexit peak_pci_remove(struct pci_dev *pdev)
244{
245 struct net_device *dev = pci_get_drvdata(pdev); /* First device */
246 struct sja1000_priv *priv = netdev_priv(dev);
247 struct peak_pci_chan *chan = priv->priv;
248 void __iomem *cfg_base = chan->cfg_base;
249 void __iomem *reg_base = priv->reg_base;
250
251 /* Disable interrupts */
252 writew(0x0, cfg_base + PITA_ICR + 2);
253
254 /* Loop over all registered devices */
255 while (1) {
256 dev_info(&pdev->dev, "removing device %s\n", dev->name);
257 unregister_sja1000dev(dev);
258 free_sja1000dev(dev);
259 dev = chan->next_dev;
260 if (!dev)
261 break;
262 priv = netdev_priv(dev);
263 chan = priv->priv;
264 }
265
266 pci_iounmap(pdev, reg_base);
267 pci_iounmap(pdev, cfg_base);
268 pci_release_regions(pdev);
269 pci_disable_device(pdev);
270
271 pci_set_drvdata(pdev, NULL);
272}
273
274static struct pci_driver peak_pci_driver = {
275 .name = DRV_NAME,
276 .id_table = peak_pci_tbl,
277 .probe = peak_pci_probe,
278 .remove = __devexit_p(peak_pci_remove),
279};
280
281static int __init peak_pci_init(void)
282{
283 return pci_register_driver(&peak_pci_driver);
284}
285module_init(peak_pci_init);
286
287static void __exit peak_pci_exit(void)
288{
289 pci_unregister_driver(&peak_pci_driver);
290}
291module_exit(peak_pci_exit);
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index f501bba1fc6..04a3f1b756a 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -40,8 +40,6 @@
40 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 40 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
41 * DAMAGE. 41 * DAMAGE.
42 * 42 *
43 * Send feedback to <socketcan-users@lists.berlios.de>
44 *
45 */ 43 */
46 44
47#include <linux/module.h> 45#include <linux/module.h>
diff --git a/drivers/net/can/sja1000/sja1000.h b/drivers/net/can/sja1000/sja1000.h
index 78bd4ecac14..23fff06875f 100644
--- a/drivers/net/can/sja1000/sja1000.h
+++ b/drivers/net/can/sja1000/sja1000.h
@@ -40,8 +40,6 @@
40 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 40 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
41 * DAMAGE. 41 * DAMAGE.
42 * 42 *
43 * Send feedback to <socketcan-users@lists.berlios.de>
44 *
45 */ 43 */
46 44
47#ifndef SJA1000_DEV_H 45#ifndef SJA1000_DEV_H