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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 * Uros Bizjak <uros@kss-loka.si>
5 *
6 * Lowlevel routines for control of Sound Blaster cards
7 */
8
9#include <linux/delay.h>
10#include <linux/init.h>
11#include <linux/interrupt.h>
12#include <linux/slab.h>
13#include <linux/ioport.h>
14#include <linux/module.h>
15#include <linux/io.h>
16#include <sound/core.h>
17#include <sound/sb.h>
18#include <sound/initval.h>
19
20#include <asm/dma.h>
21
22MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
23MODULE_DESCRIPTION("ALSA lowlevel driver for Sound Blaster cards");
24MODULE_LICENSE("GPL");
25
26#define BUSY_LOOPS 100000
27
28#undef IO_DEBUG
29
30int snd_sbdsp_command(struct snd_sb *chip, unsigned char val)
31{
32 int i;
33#ifdef IO_DEBUG
34 snd_printk(KERN_DEBUG "command 0x%x\n", val);
35#endif
36 for (i = BUSY_LOOPS; i; i--)
37 if ((inb(SBP(chip, STATUS)) & 0x80) == 0) {
38 outb(val, SBP(chip, COMMAND));
39 return 1;
40 }
41 snd_printd("%s [0x%lx]: timeout (0x%x)\n", __func__, chip->port, val);
42 return 0;
43}
44
45int snd_sbdsp_get_byte(struct snd_sb *chip)
46{
47 int val;
48 int i;
49 for (i = BUSY_LOOPS; i; i--) {
50 if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
51 val = inb(SBP(chip, READ));
52#ifdef IO_DEBUG
53 snd_printk(KERN_DEBUG "get_byte 0x%x\n", val);
54#endif
55 return val;
56 }
57 }
58 snd_printd("%s [0x%lx]: timeout\n", __func__, chip->port);
59 return -ENODEV;
60}
61
62int snd_sbdsp_reset(struct snd_sb *chip)
63{
64 int i;
65
66 outb(1, SBP(chip, RESET));
67 udelay(10);
68 outb(0, SBP(chip, RESET));
69 udelay(30);
70 for (i = BUSY_LOOPS; i; i--)
71 if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
72 if (inb(SBP(chip, READ)) == 0xaa)
73 return 0;
74 else
75 break;
76 }
77 snd_printdd("%s [0x%lx] failed...\n", __func__, chip->port);
78 return -ENODEV;
79}
80
81static int snd_sbdsp_version(struct snd_sb * chip)
82{
83 unsigned int result;
84
85 snd_sbdsp_command(chip, SB_DSP_GET_VERSION);
86 result = (short) snd_sbdsp_get_byte(chip) << 8;
87 result |= (short) snd_sbdsp_get_byte(chip);
88 return result;
89}
90
91static int snd_sbdsp_probe(struct snd_sb * chip)
92{
93 int version;
94 int major, minor;
95 char *str;
96 unsigned long flags;
97
98 /*
99 * initialization sequence
100 */
101
102 spin_lock_irqsave(&chip->reg_lock, flags);
103 if (snd_sbdsp_reset(chip) < 0) {
104 spin_unlock_irqrestore(&chip->reg_lock, flags);
105 return -ENODEV;
106 }
107 version = snd_sbdsp_version(chip);
108 if (version < 0) {
109 spin_unlock_irqrestore(&chip->reg_lock, flags);
110 return -ENODEV;
111 }
112 spin_unlock_irqrestore(&chip->reg_lock, flags);
113 major = version >> 8;
114 minor = version & 0xff;
115 snd_printdd("SB [0x%lx]: DSP chip found, version = %i.%i\n",
116 chip->port, major, minor);
117
118 switch (chip->hardware) {
119 case SB_HW_AUTO:
120 switch (major) {
121 case 1:
122 chip->hardware = SB_HW_10;
123 str = "1.0";
124 break;
125 case 2:
126 if (minor) {
127 chip->hardware = SB_HW_201;
128 str = "2.01+";
129 } else {
130 chip->hardware = SB_HW_20;
131 str = "2.0";
132 }
133 break;
134 case 3:
135 chip->hardware = SB_HW_PRO;
136 str = "Pro";
137 break;
138 case 4:
139 chip->hardware = SB_HW_16;
140 str = "16";
141 break;
142 default:
143 snd_printk(KERN_INFO "SB [0x%lx]: unknown DSP chip version %i.%i\n",
144 chip->port, major, minor);
145 return -ENODEV;
146 }
147 break;
148 case SB_HW_ALS100:
149 str = "16 (ALS-100)";
150 break;
151 case SB_HW_ALS4000:
152 str = "16 (ALS-4000)";
153 break;
154 case SB_HW_DT019X:
155 str = "(DT019X/ALS007)";
156 break;
157 case SB_HW_CS5530:
158 str = "16 (CS5530)";
159 break;
160 case SB_HW_JAZZ16:
161 str = "Pro (Jazz16)";
162 break;
163 default:
164 return -ENODEV;
165 }
166 sprintf(chip->name, "Sound Blaster %s", str);
167 chip->version = (major << 8) | minor;
168 return 0;
169}
170
171int snd_sbdsp_create(struct snd_card *card,
172 unsigned long port,
173 int irq,
174 irq_handler_t irq_handler,
175 int dma8,
176 int dma16,
177 unsigned short hardware,
178 struct snd_sb **r_chip)
179{
180 struct snd_sb *chip;
181 int err;
182
183 if (snd_BUG_ON(!r_chip))
184 return -EINVAL;
185 *r_chip = NULL;
186 chip = devm_kzalloc(card->dev, sizeof(*chip), GFP_KERNEL);
187 if (!chip)
188 return -ENOMEM;
189 spin_lock_init(&chip->reg_lock);
190 spin_lock_init(&chip->open_lock);
191 spin_lock_init(&chip->midi_input_lock);
192 spin_lock_init(&chip->mixer_lock);
193 chip->irq = -1;
194 chip->dma8 = -1;
195 chip->dma16 = -1;
196 chip->port = port;
197
198 if (devm_request_irq(card->dev, irq, irq_handler,
199 (hardware == SB_HW_ALS4000 ||
200 hardware == SB_HW_CS5530) ?
201 IRQF_SHARED : 0,
202 "SoundBlaster", (void *) chip)) {
203 snd_printk(KERN_ERR "sb: can't grab irq %d\n", irq);
204 return -EBUSY;
205 }
206 chip->irq = irq;
207 card->sync_irq = chip->irq;
208
209 if (hardware == SB_HW_ALS4000)
210 goto __skip_allocation;
211
212 chip->res_port = devm_request_region(card->dev, port, 16,
213 "SoundBlaster");
214 if (!chip->res_port) {
215 snd_printk(KERN_ERR "sb: can't grab port 0x%lx\n", port);
216 return -EBUSY;
217 }
218
219#ifdef CONFIG_ISA
220 if (dma8 >= 0 && snd_devm_request_dma(card->dev, dma8,
221 "SoundBlaster - 8bit")) {
222 snd_printk(KERN_ERR "sb: can't grab DMA8 %d\n", dma8);
223 return -EBUSY;
224 }
225 chip->dma8 = dma8;
226 if (dma16 >= 0) {
227 if (hardware != SB_HW_ALS100 && (dma16 < 5 || dma16 > 7)) {
228 /* no duplex */
229 dma16 = -1;
230 } else if (snd_devm_request_dma(card->dev, dma16,
231 "SoundBlaster - 16bit")) {
232 snd_printk(KERN_ERR "sb: can't grab DMA16 %d\n", dma16);
233 return -EBUSY;
234 }
235 }
236 chip->dma16 = dma16;
237#endif
238
239 __skip_allocation:
240 chip->card = card;
241 chip->hardware = hardware;
242 err = snd_sbdsp_probe(chip);
243 if (err < 0)
244 return err;
245 *r_chip = chip;
246 return 0;
247}
248
249EXPORT_SYMBOL(snd_sbdsp_command);
250EXPORT_SYMBOL(snd_sbdsp_get_byte);
251EXPORT_SYMBOL(snd_sbdsp_reset);
252EXPORT_SYMBOL(snd_sbdsp_create);
253/* sb_mixer.c */
254EXPORT_SYMBOL(snd_sbmixer_write);
255EXPORT_SYMBOL(snd_sbmixer_read);
256EXPORT_SYMBOL(snd_sbmixer_new);
257EXPORT_SYMBOL(snd_sbmixer_add_ctl);
258#ifdef CONFIG_PM
259EXPORT_SYMBOL(snd_sbmixer_suspend);
260EXPORT_SYMBOL(snd_sbmixer_resume);
261#endif
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 * Uros Bizjak <uros@kss-loka.si>
5 *
6 * Lowlevel routines for control of Sound Blaster cards
7 */
8
9#include <linux/delay.h>
10#include <linux/init.h>
11#include <linux/interrupt.h>
12#include <linux/slab.h>
13#include <linux/ioport.h>
14#include <linux/module.h>
15#include <linux/io.h>
16#include <sound/core.h>
17#include <sound/sb.h>
18#include <sound/initval.h>
19
20#include <asm/dma.h>
21
22MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
23MODULE_DESCRIPTION("ALSA lowlevel driver for Sound Blaster cards");
24MODULE_LICENSE("GPL");
25
26#define BUSY_LOOPS 100000
27
28#undef IO_DEBUG
29
30int snd_sbdsp_command(struct snd_sb *chip, unsigned char val)
31{
32 int i;
33#ifdef IO_DEBUG
34 dev_dbg(chip->card->dev, "command 0x%x\n", val);
35#endif
36 for (i = BUSY_LOOPS; i; i--)
37 if ((inb(SBP(chip, STATUS)) & 0x80) == 0) {
38 outb(val, SBP(chip, COMMAND));
39 return 1;
40 }
41 dev_dbg(chip->card->dev, "%s [0x%lx]: timeout (0x%x)\n", __func__, chip->port, val);
42 return 0;
43}
44
45int snd_sbdsp_get_byte(struct snd_sb *chip)
46{
47 int val;
48 int i;
49 for (i = BUSY_LOOPS; i; i--) {
50 if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
51 val = inb(SBP(chip, READ));
52#ifdef IO_DEBUG
53 dev_dbg(chip->card->dev, "get_byte 0x%x\n", val);
54#endif
55 return val;
56 }
57 }
58 dev_dbg(chip->card->dev, "%s [0x%lx]: timeout\n", __func__, chip->port);
59 return -ENODEV;
60}
61
62int snd_sbdsp_reset(struct snd_sb *chip)
63{
64 int i;
65
66 outb(1, SBP(chip, RESET));
67 udelay(10);
68 outb(0, SBP(chip, RESET));
69 udelay(30);
70 for (i = BUSY_LOOPS; i; i--)
71 if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
72 if (inb(SBP(chip, READ)) == 0xaa)
73 return 0;
74 else
75 break;
76 }
77 if (chip->card)
78 dev_dbg(chip->card->dev, "%s [0x%lx] failed...\n", __func__, chip->port);
79 return -ENODEV;
80}
81
82static int snd_sbdsp_version(struct snd_sb * chip)
83{
84 unsigned int result;
85
86 snd_sbdsp_command(chip, SB_DSP_GET_VERSION);
87 result = (short) snd_sbdsp_get_byte(chip) << 8;
88 result |= (short) snd_sbdsp_get_byte(chip);
89 return result;
90}
91
92static int snd_sbdsp_probe(struct snd_sb * chip)
93{
94 int version;
95 int major, minor;
96 char *str;
97 unsigned long flags;
98
99 /*
100 * initialization sequence
101 */
102
103 spin_lock_irqsave(&chip->reg_lock, flags);
104 if (snd_sbdsp_reset(chip) < 0) {
105 spin_unlock_irqrestore(&chip->reg_lock, flags);
106 return -ENODEV;
107 }
108 version = snd_sbdsp_version(chip);
109 if (version < 0) {
110 spin_unlock_irqrestore(&chip->reg_lock, flags);
111 return -ENODEV;
112 }
113 spin_unlock_irqrestore(&chip->reg_lock, flags);
114 major = version >> 8;
115 minor = version & 0xff;
116 dev_dbg(chip->card->dev, "SB [0x%lx]: DSP chip found, version = %i.%i\n",
117 chip->port, major, minor);
118
119 switch (chip->hardware) {
120 case SB_HW_AUTO:
121 switch (major) {
122 case 1:
123 chip->hardware = SB_HW_10;
124 str = "1.0";
125 break;
126 case 2:
127 if (minor) {
128 chip->hardware = SB_HW_201;
129 str = "2.01+";
130 } else {
131 chip->hardware = SB_HW_20;
132 str = "2.0";
133 }
134 break;
135 case 3:
136 chip->hardware = SB_HW_PRO;
137 str = "Pro";
138 break;
139 case 4:
140 chip->hardware = SB_HW_16;
141 str = "16";
142 break;
143 default:
144 dev_info(chip->card->dev, "SB [0x%lx]: unknown DSP chip version %i.%i\n",
145 chip->port, major, minor);
146 return -ENODEV;
147 }
148 break;
149 case SB_HW_ALS100:
150 str = "16 (ALS-100)";
151 break;
152 case SB_HW_ALS4000:
153 str = "16 (ALS-4000)";
154 break;
155 case SB_HW_DT019X:
156 str = "(DT019X/ALS007)";
157 break;
158 case SB_HW_CS5530:
159 str = "16 (CS5530)";
160 break;
161 case SB_HW_JAZZ16:
162 str = "Pro (Jazz16)";
163 break;
164 default:
165 return -ENODEV;
166 }
167 sprintf(chip->name, "Sound Blaster %s", str);
168 chip->version = (major << 8) | minor;
169 return 0;
170}
171
172int snd_sbdsp_create(struct snd_card *card,
173 unsigned long port,
174 int irq,
175 irq_handler_t irq_handler,
176 int dma8,
177 int dma16,
178 unsigned short hardware,
179 struct snd_sb **r_chip)
180{
181 struct snd_sb *chip;
182 int err;
183
184 if (snd_BUG_ON(!r_chip))
185 return -EINVAL;
186 *r_chip = NULL;
187 chip = devm_kzalloc(card->dev, sizeof(*chip), GFP_KERNEL);
188 if (!chip)
189 return -ENOMEM;
190 spin_lock_init(&chip->reg_lock);
191 spin_lock_init(&chip->open_lock);
192 spin_lock_init(&chip->midi_input_lock);
193 spin_lock_init(&chip->mixer_lock);
194 chip->irq = -1;
195 chip->dma8 = -1;
196 chip->dma16 = -1;
197 chip->port = port;
198
199 if (devm_request_irq(card->dev, irq, irq_handler,
200 (hardware == SB_HW_ALS4000 ||
201 hardware == SB_HW_CS5530) ?
202 IRQF_SHARED : 0,
203 "SoundBlaster", (void *) chip)) {
204 dev_err(card->dev, "sb: can't grab irq %d\n", irq);
205 return -EBUSY;
206 }
207 chip->irq = irq;
208 card->sync_irq = chip->irq;
209
210 if (hardware == SB_HW_ALS4000)
211 goto __skip_allocation;
212
213 chip->res_port = devm_request_region(card->dev, port, 16,
214 "SoundBlaster");
215 if (!chip->res_port) {
216 dev_err(card->dev, "sb: can't grab port 0x%lx\n", port);
217 return -EBUSY;
218 }
219
220#ifdef CONFIG_ISA
221 if (dma8 >= 0 && snd_devm_request_dma(card->dev, dma8,
222 "SoundBlaster - 8bit")) {
223 dev_err(card->dev, "sb: can't grab DMA8 %d\n", dma8);
224 return -EBUSY;
225 }
226 chip->dma8 = dma8;
227 if (dma16 >= 0) {
228 if (hardware != SB_HW_ALS100 && (dma16 < 5 || dma16 > 7)) {
229 /* no duplex */
230 dma16 = -1;
231 } else if (snd_devm_request_dma(card->dev, dma16,
232 "SoundBlaster - 16bit")) {
233 dev_err(card->dev, "sb: can't grab DMA16 %d\n", dma16);
234 return -EBUSY;
235 }
236 }
237 chip->dma16 = dma16;
238#endif
239
240 __skip_allocation:
241 chip->card = card;
242 chip->hardware = hardware;
243 err = snd_sbdsp_probe(chip);
244 if (err < 0)
245 return err;
246 *r_chip = chip;
247 return 0;
248}
249
250EXPORT_SYMBOL(snd_sbdsp_command);
251EXPORT_SYMBOL(snd_sbdsp_get_byte);
252EXPORT_SYMBOL(snd_sbdsp_reset);
253EXPORT_SYMBOL(snd_sbdsp_create);
254/* sb_mixer.c */
255EXPORT_SYMBOL(snd_sbmixer_write);
256EXPORT_SYMBOL(snd_sbmixer_read);
257EXPORT_SYMBOL(snd_sbmixer_new);
258EXPORT_SYMBOL(snd_sbmixer_add_ctl);
259#ifdef CONFIG_PM
260EXPORT_SYMBOL(snd_sbmixer_suspend);
261EXPORT_SYMBOL(snd_sbmixer_resume);
262#endif