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1/*
2 * Driver for 802.11b cards using RAM-loadable Symbol firmware, such as
3 * Symbol Wireless Networker LA4137, CompactFlash cards by Socket
4 * Communications and Intel PRO/Wireless 2011B.
5 *
6 * The driver implements Symbol firmware download. The rest is handled
7 * in hermes.c and main.c.
8 *
9 * Utilities for downloading the Symbol firmware are available at
10 * http://sourceforge.net/projects/orinoco/
11 *
12 * Copyright (C) 2002-2005 Pavel Roskin <proski@gnu.org>
13 * Portions based on orinoco_cs.c:
14 * Copyright (C) David Gibson, Linuxcare Australia
15 * Portions based on Spectrum24tDnld.c from original spectrum24 driver:
16 * Copyright (C) Symbol Technologies.
17 *
18 * See copyright notice in file main.c.
19 */
20
21#define DRIVER_NAME "spectrum_cs"
22#define PFX DRIVER_NAME ": "
23
24#include <linux/module.h>
25#include <linux/kernel.h>
26#include <linux/delay.h>
27#include <pcmcia/cistpl.h>
28#include <pcmcia/cisreg.h>
29#include <pcmcia/ds.h>
30
31#include "orinoco.h"
32
33/********************************************************************/
34/* Module stuff */
35/********************************************************************/
36
37MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
38MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader");
39MODULE_LICENSE("Dual MPL/GPL");
40
41/* Module parameters */
42
43/* Some D-Link cards have buggy CIS. They do work at 5v properly, but
44 * don't have any CIS entry for it. This workaround it... */
45static int ignore_cis_vcc; /* = 0 */
46module_param(ignore_cis_vcc, int, 0);
47MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
48
49/********************************************************************/
50/* Data structures */
51/********************************************************************/
52
53/* PCMCIA specific device information (goes in the card field of
54 * struct orinoco_private */
55struct orinoco_pccard {
56 struct pcmcia_device *p_dev;
57};
58
59/********************************************************************/
60/* Function prototypes */
61/********************************************************************/
62
63static int spectrum_cs_config(struct pcmcia_device *link);
64static void spectrum_cs_release(struct pcmcia_device *link);
65
66/* Constants for the CISREG_CCSR register */
67#define HCR_RUN 0x07 /* run firmware after reset */
68#define HCR_IDLE 0x0E /* don't run firmware after reset */
69#define HCR_MEM16 0x10 /* memory width bit, should be preserved */
70
71
72/*
73 * Reset the card using configuration registers COR and CCSR.
74 * If IDLE is 1, stop the firmware, so that it can be safely rewritten.
75 */
76static int
77spectrum_reset(struct pcmcia_device *link, int idle)
78{
79 int ret;
80 u8 save_cor;
81 u8 ccsr;
82
83 /* Doing it if hardware is gone is guaranteed crash */
84 if (!pcmcia_dev_present(link))
85 return -ENODEV;
86
87 /* Save original COR value */
88 ret = pcmcia_read_config_byte(link, CISREG_COR, &save_cor);
89 if (ret)
90 goto failed;
91
92 /* Soft-Reset card */
93 ret = pcmcia_write_config_byte(link, CISREG_COR,
94 (save_cor | COR_SOFT_RESET));
95 if (ret)
96 goto failed;
97 udelay(1000);
98
99 /* Read CCSR */
100 ret = pcmcia_read_config_byte(link, CISREG_CCSR, &ccsr);
101 if (ret)
102 goto failed;
103
104 /*
105 * Start or stop the firmware. Memory width bit should be
106 * preserved from the value we've just read.
107 */
108 ccsr = (idle ? HCR_IDLE : HCR_RUN) | (ccsr & HCR_MEM16);
109 ret = pcmcia_write_config_byte(link, CISREG_CCSR, ccsr);
110 if (ret)
111 goto failed;
112 udelay(1000);
113
114 /* Restore original COR configuration index */
115 ret = pcmcia_write_config_byte(link, CISREG_COR,
116 (save_cor & ~COR_SOFT_RESET));
117 if (ret)
118 goto failed;
119 udelay(1000);
120 return 0;
121
122failed:
123 return -ENODEV;
124}
125
126/********************************************************************/
127/* Device methods */
128/********************************************************************/
129
130static int
131spectrum_cs_hard_reset(struct orinoco_private *priv)
132{
133 struct orinoco_pccard *card = priv->card;
134 struct pcmcia_device *link = card->p_dev;
135
136 /* Soft reset using COR and HCR */
137 spectrum_reset(link, 0);
138
139 return 0;
140}
141
142static int
143spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle)
144{
145 struct orinoco_pccard *card = priv->card;
146 struct pcmcia_device *link = card->p_dev;
147
148 return spectrum_reset(link, idle);
149}
150
151/********************************************************************/
152/* PCMCIA stuff */
153/********************************************************************/
154
155static int
156spectrum_cs_probe(struct pcmcia_device *link)
157{
158 struct orinoco_private *priv;
159 struct orinoco_pccard *card;
160
161 priv = alloc_orinocodev(sizeof(*card), &link->dev,
162 spectrum_cs_hard_reset,
163 spectrum_cs_stop_firmware);
164 if (!priv)
165 return -ENOMEM;
166 card = priv->card;
167
168 /* Link both structures together */
169 card->p_dev = link;
170 link->priv = priv;
171
172 return spectrum_cs_config(link);
173} /* spectrum_cs_attach */
174
175static void spectrum_cs_detach(struct pcmcia_device *link)
176{
177 struct orinoco_private *priv = link->priv;
178
179 orinoco_if_del(priv);
180
181 spectrum_cs_release(link);
182
183 free_orinocodev(priv);
184} /* spectrum_cs_detach */
185
186static int spectrum_cs_config_check(struct pcmcia_device *p_dev,
187 void *priv_data)
188{
189 if (p_dev->config_index == 0)
190 return -EINVAL;
191
192 return pcmcia_request_io(p_dev);
193};
194
195static int
196spectrum_cs_config(struct pcmcia_device *link)
197{
198 struct orinoco_private *priv = link->priv;
199 struct hermes *hw = &priv->hw;
200 int ret;
201 void __iomem *mem;
202
203 link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC |
204 CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
205 if (ignore_cis_vcc)
206 link->config_flags &= ~CONF_AUTO_CHECK_VCC;
207 ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL);
208 if (ret) {
209 if (!ignore_cis_vcc)
210 printk(KERN_ERR PFX "GetNextTuple(): No matching "
211 "CIS configuration. Maybe you need the "
212 "ignore_cis_vcc=1 parameter.\n");
213 goto failed;
214 }
215
216 mem = ioport_map(link->resource[0]->start,
217 resource_size(link->resource[0]));
218 if (!mem)
219 goto failed;
220
221 /* We initialize the hermes structure before completing PCMCIA
222 * configuration just in case the interrupt handler gets
223 * called. */
224 hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
225 hw->eeprom_pda = true;
226
227 ret = pcmcia_request_irq(link, orinoco_interrupt);
228 if (ret)
229 goto failed;
230
231 ret = pcmcia_enable_device(link);
232 if (ret)
233 goto failed;
234
235 /* Reset card */
236 if (spectrum_cs_hard_reset(priv) != 0)
237 goto failed;
238
239 /* Initialise the main driver */
240 if (orinoco_init(priv) != 0) {
241 printk(KERN_ERR PFX "orinoco_init() failed\n");
242 goto failed;
243 }
244
245 /* Register an interface with the stack */
246 if (orinoco_if_add(priv, link->resource[0]->start,
247 link->irq, NULL) != 0) {
248 printk(KERN_ERR PFX "orinoco_if_add() failed\n");
249 goto failed;
250 }
251
252 return 0;
253
254 failed:
255 spectrum_cs_release(link);
256 return -ENODEV;
257} /* spectrum_cs_config */
258
259static void
260spectrum_cs_release(struct pcmcia_device *link)
261{
262 struct orinoco_private *priv = link->priv;
263 unsigned long flags;
264
265 /* We're committed to taking the device away now, so mark the
266 * hardware as unavailable */
267 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
268 priv->hw_unavailable++;
269 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
270
271 pcmcia_disable_device(link);
272 if (priv->hw.iobase)
273 ioport_unmap(priv->hw.iobase);
274} /* spectrum_cs_release */
275
276
277static int
278spectrum_cs_suspend(struct pcmcia_device *link)
279{
280 struct orinoco_private *priv = link->priv;
281 int err = 0;
282
283 /* Mark the device as stopped, to block IO until later */
284 orinoco_down(priv);
285
286 return err;
287}
288
289static int
290spectrum_cs_resume(struct pcmcia_device *link)
291{
292 struct orinoco_private *priv = link->priv;
293 int err = orinoco_up(priv);
294
295 return err;
296}
297
298
299/********************************************************************/
300/* Module initialization */
301/********************************************************************/
302
303static const struct pcmcia_device_id spectrum_cs_ids[] = {
304 PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */
305 PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */
306 PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */
307 PCMCIA_DEVICE_NULL,
308};
309MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids);
310
311static struct pcmcia_driver orinoco_driver = {
312 .owner = THIS_MODULE,
313 .name = DRIVER_NAME,
314 .probe = spectrum_cs_probe,
315 .remove = spectrum_cs_detach,
316 .suspend = spectrum_cs_suspend,
317 .resume = spectrum_cs_resume,
318 .id_table = spectrum_cs_ids,
319};
320module_pcmcia_driver(orinoco_driver);