1/*
2 * sound/oss/sb_card.c
3 *
4 * Detection routine for the ISA Sound Blaster and compatable sound
5 * cards.
6 *
7 * This file is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
8 * Version 2 (June 1991). See the "COPYING" file distributed with this
9 * software for more info.
10 *
11 * This is a complete rewrite of the detection routines. This was
12 * prompted by the PnP API change during v2.5 and the ugly state the
13 * code was in.
14 *
15 * Copyright (C) by Paul Laufer 2002. Based on code originally by
16 * Hannu Savolainen which was modified by many others over the
17 * years. Authors specifically mentioned in the previous version were:
18 * Daniel Stone, Alessandro Zummo, Jeff Garzik, Arnaldo Carvalho de
19 * Melo, Daniel Church, and myself.
20 *
21 * 02-05-2003 Original Release, Paul Laufer <paul@laufernet.com>
22 * 02-07-2003 Bug made it into first release. Take two.
23 */
24
25#include <linux/module.h>
26#include <linux/moduleparam.h>
27#include <linux/slab.h>
28#include <linux/init.h>
29#include "sound_config.h"
30#include "sb_mixer.h"
31#include "sb.h"
32#ifdef CONFIG_PNP
33#include <linux/pnp.h>
34#endif /* CONFIG_PNP */
35#include "sb_card.h"
36
37MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
38MODULE_LICENSE("GPL");
39
40extern void *smw_free;
41
42static int __initdata mpu_io	= 0;
43static int __initdata io	= -1;
44static int __initdata irq	= -1;
45static int __initdata dma	= -1;
46static int __initdata dma16	= -1;
47static int __initdata type	= 0; /* Can set this to a specific card type */
48static int __initdata esstype   = 0; /* ESS chip type */
49static int __initdata acer 	= 0; /* Do acer notebook init? */
50static int __initdata sm_games 	= 0; /* Logitech soundman games? */
51
52static struct sb_card_config *legacy = NULL;
53
54#ifdef CONFIG_PNP
55static int pnp_registered;
56static int __initdata pnp       = 1;
57/*
58static int __initdata uart401	= 0;
59*/
60#else
61static int __initdata pnp       = 0;
62#endif
63
64module_param(io, int, 000);
65MODULE_PARM_DESC(io,       "Soundblaster i/o base address (0x220,0x240,0x260,0x280)");
66module_param(irq, int, 000);
67MODULE_PARM_DESC(irq,	   "IRQ (5,7,9,10)");
68module_param(dma, int, 000);
69MODULE_PARM_DESC(dma,	   "8-bit DMA channel (0,1,3)");
70module_param(dma16, int, 000);
71MODULE_PARM_DESC(dma16,	   "16-bit DMA channel (5,6,7)");
72module_param(mpu_io, int, 000);
73MODULE_PARM_DESC(mpu_io,   "MPU base address");
74module_param(type, int, 000);
75MODULE_PARM_DESC(type,	   "You can set this to specific card type (doesn't " \
76		 "work with pnp)");
77module_param(sm_games, int, 000);
78MODULE_PARM_DESC(sm_games, "Enable support for Logitech soundman games " \
79		 "(doesn't work with pnp)");
80module_param(esstype, int, 000);
81MODULE_PARM_DESC(esstype,  "ESS chip type (doesn't work with pnp)");
82module_param(acer, int, 000);
83MODULE_PARM_DESC(acer,	   "Set this to detect cards in some ACER notebooks "\
84		 "(doesn't work with pnp)");
85
86#ifdef CONFIG_PNP
87module_param(pnp, int, 000);
88MODULE_PARM_DESC(pnp,     "Went set to 0 will disable detection using PnP. "\
89		  "Default is 1.\n");
90/* Not done yet.... */
91/*
92module_param(uart401, int, 000);
93MODULE_PARM_DESC(uart401,  "When set to 1, will attempt to detect and enable"\
94		 "the mpu on some clones");
95*/
96#endif /* CONFIG_PNP */
97
98/* OSS subsystem card registration shared by PnP and legacy routines */
99static int sb_register_oss(struct sb_card_config *scc, struct sb_module_options *sbmo)
100{
101	if (!request_region(scc->conf.io_base, 16, "soundblaster")) {
102		printk(KERN_ERR "sb: ports busy.\n");
103		kfree(scc);
104		return -EBUSY;
105	}
106
107	if (!sb_dsp_detect(&scc->conf, 0, 0, sbmo)) {
108		release_region(scc->conf.io_base, 16);
109		printk(KERN_ERR "sb: Failed DSP Detect.\n");
110		kfree(scc);
111		return -ENODEV;
112	}
113	if(!sb_dsp_init(&scc->conf, THIS_MODULE)) {
114		printk(KERN_ERR "sb: Failed DSP init.\n");
115		kfree(scc);
116		return -ENODEV;
117	}
118	if(scc->mpucnf.io_base > 0) {
119		scc->mpu = 1;
120		printk(KERN_INFO "sb: Turning on MPU\n");
121		if(!probe_sbmpu(&scc->mpucnf, THIS_MODULE))
122			scc->mpu = 0;
123	}
124
125	return 1;
126}
127
128static void sb_unload(struct sb_card_config *scc)
129{
130	sb_dsp_unload(&scc->conf, 0);
131	if(scc->mpu)
132		unload_sbmpu(&scc->mpucnf);
133	kfree(scc);
134}
135
136/* Register legacy card with OSS subsystem */
137static int __init sb_init_legacy(void)
138{
139	struct sb_module_options sbmo = {0};
140
141	if((legacy = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
142		printk(KERN_ERR "sb: Error: Could not allocate memory\n");
143		return -ENOMEM;
144	}
145
146	legacy->conf.io_base      = io;
147	legacy->conf.irq          = irq;
148	legacy->conf.dma          = dma;
149	legacy->conf.dma2         = dma16;
150	legacy->conf.card_subtype = type;
151
152	legacy->mpucnf.io_base = mpu_io;
153	legacy->mpucnf.irq     = -1;
154	legacy->mpucnf.dma     = -1;
155	legacy->mpucnf.dma2    = -1;
156
157	sbmo.esstype  = esstype;
158	sbmo.sm_games = sm_games;
159	sbmo.acer     = acer;
160
161	return sb_register_oss(legacy, &sbmo);
162}
163
164#ifdef CONFIG_PNP
165
166/* Populate the OSS subsystem structures with information from PnP */
167static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
168{
169	scc->conf.io_base   = -1;
170	scc->conf.irq       = -1;
171	scc->conf.dma       = -1;
172	scc->conf.dma2      = -1;
173	scc->mpucnf.io_base = -1;
174	scc->mpucnf.irq     = -1;
175	scc->mpucnf.dma     = -1;
176	scc->mpucnf.dma2    = -1;
177
178	/* All clones layout their PnP tables differently and some use
179	   different logical devices for the MPU */
180	if(!strncmp("CTL",scc->card_id,3)) {
181		scc->conf.io_base   = pnp_port_start(dev,0);
182		scc->conf.irq       = pnp_irq(dev,0);
183		scc->conf.dma       = pnp_dma(dev,0);
184		scc->conf.dma2      = pnp_dma(dev,1);
185		scc->mpucnf.io_base = pnp_port_start(dev,1);
186		return;
187	}
188	if(!strncmp("tBA",scc->card_id,3)) {
189		scc->conf.io_base   = pnp_port_start(dev,0);
190		scc->conf.irq       = pnp_irq(dev,0);
191		scc->conf.dma       = pnp_dma(dev,0);
192		scc->conf.dma2      = pnp_dma(dev,1);
193		return;
194	}
195	if(!strncmp("ESS",scc->card_id,3)) {
196		scc->conf.io_base   = pnp_port_start(dev,0);
197		scc->conf.irq       = pnp_irq(dev,0);
198		scc->conf.dma       = pnp_dma(dev,0);
199		scc->conf.dma2      = pnp_dma(dev,1);
200	       	scc->mpucnf.io_base = pnp_port_start(dev,2);
201		return;
202	}
203	if(!strncmp("CMI",scc->card_id,3)) {
204		scc->conf.io_base = pnp_port_start(dev,0);
205		scc->conf.irq     = pnp_irq(dev,0);
206		scc->conf.dma     = pnp_dma(dev,0);
207		scc->conf.dma2    = pnp_dma(dev,1);
208		return;
209	}
210	if(!strncmp("RWB",scc->card_id,3)) {
211		scc->conf.io_base = pnp_port_start(dev,0);
212		scc->conf.irq     = pnp_irq(dev,0);
213		scc->conf.dma     = pnp_dma(dev,0);
214		return;
215	}
216	if(!strncmp("ALS",scc->card_id,3)) {
217		if(!strncmp("ALS0007",scc->card_id,7)) {
218			scc->conf.io_base = pnp_port_start(dev,0);
219			scc->conf.irq     = pnp_irq(dev,0);
220			scc->conf.dma     = pnp_dma(dev,0);
221		} else {
222			scc->conf.io_base = pnp_port_start(dev,0);
223			scc->conf.irq     = pnp_irq(dev,0);
224			scc->conf.dma     = pnp_dma(dev,1);
225			scc->conf.dma2    = pnp_dma(dev,0);
226		}
227		return;
228	}
229	if(!strncmp("RTL",scc->card_id,3)) {
230		scc->conf.io_base = pnp_port_start(dev,0);
231		scc->conf.irq     = pnp_irq(dev,0);
232		scc->conf.dma     = pnp_dma(dev,1);
233		scc->conf.dma2    = pnp_dma(dev,0);
234	}
235}
236
237static unsigned int sb_pnp_devices;
238
239/* Probe callback function for the PnP API */
240static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
241{
242	struct sb_card_config *scc;
243	struct sb_module_options sbmo = {0}; /* Default to 0 for PnP */
244	struct pnp_dev *dev = pnp_request_card_device(card, card_id->devs[0].id, NULL);
245
246	if(!dev){
247		return -EBUSY;
248	}
249
250	if((scc = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
251		printk(KERN_ERR "sb: Error: Could not allocate memory\n");
252		return -ENOMEM;
253	}
254
255	printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
256	       "%s, Device PnP id = %s\n", card->card->name, card_id->id,
257	       dev->id->id);
258
259	scc->card_id = card_id->id;
260	scc->dev_id = dev->id->id;
261	sb_dev2cfg(dev, scc);
262
263	printk(KERN_INFO "sb: PnP:      Detected at: io=0x%x, irq=%d, " \
264	       "dma=%d, dma16=%d\n", scc->conf.io_base, scc->conf.irq,
265	       scc->conf.dma, scc->conf.dma2);
266
267	pnp_set_card_drvdata(card, scc);
268	sb_pnp_devices++;
269
270	return sb_register_oss(scc, &sbmo);
271}
272
273static void sb_pnp_remove(struct pnp_card_link *card)
274{
275	struct sb_card_config *scc = pnp_get_card_drvdata(card);
276
277	if(!scc)
278		return;
279
280	printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
281
282	sb_unload(scc);
283}
284
285static struct pnp_card_driver sb_pnp_driver = {
286	.name          = "OSS SndBlstr", /* 16 character limit */
287	.id_table      = sb_pnp_card_table,
288	.probe         = sb_pnp_probe,
289	.remove        = sb_pnp_remove,
290};
291MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
292#endif /* CONFIG_PNP */
293
294static void sb_unregister_all(void)
295{
296#ifdef CONFIG_PNP
297	if (pnp_registered)
298		pnp_unregister_card_driver(&sb_pnp_driver);
299#endif
300}
301
302static int __init sb_init(void)
303{
304	int lres = 0;
305	int pres = 0;
306
307	printk(KERN_INFO "sb: Init: Starting Probe...\n");
308
309	if(io != -1 && irq != -1 && dma != -1) {
310		printk(KERN_INFO "sb: Probing legacy card with io=%x, "\
311		       "irq=%d, dma=%d, dma16=%d\n",io, irq, dma, dma16);
312		lres = sb_init_legacy();
313	} else if((io != -1 || irq != -1 || dma != -1) ||
314		  (!pnp && (io == -1 && irq == -1 && dma == -1)))
315		printk(KERN_ERR "sb: Error: At least io, irq, and dma "\
316		       "must be set for legacy cards.\n");
317
318#ifdef CONFIG_PNP
319	if(pnp) {
320		int err = pnp_register_card_driver(&sb_pnp_driver);
321		if (!err)
322			pnp_registered = 1;
323		pres = sb_pnp_devices;
324	}
325#endif
326	printk(KERN_INFO "sb: Init: Done\n");
327
328	/* If either PnP or Legacy registered a card then return
329	 * success */
330	if (pres == 0 && lres <= 0) {
331		sb_unregister_all();
332		return -ENODEV;
333	}
334	return 0;
335}
336
337static void __exit sb_exit(void)
338{
339	printk(KERN_INFO "sb: Unloading...\n");
340
341	/* Unload legacy card */
342	if (legacy) {
343		printk (KERN_INFO "sb: Unloading legacy card\n");
344		sb_unload(legacy);
345	}
346
347	sb_unregister_all();
348
349	vfree(smw_free);
350	smw_free = NULL;
351}
352
353module_init(sb_init);
354module_exit(sb_exit);
355