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1da177e4 LT |
1 | /* |
2 | * Initialisation code for Cyrix/NatSemi VSA1 softaudio | |
3 | * | |
2f1e593d | 4 | * (C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
5 | * |
6 | * XpressAudio(tm) is used on the Cyrix MediaGX (now NatSemi Geode) systems. | |
7 | * The older version (VSA1) provides fairly good soundblaster emulation | |
8 | * although there are a couple of bugs: large DMA buffers break record, | |
9 | * and the MPU event handling seems suspect. VSA2 allows the native driver | |
10 | * to control the AC97 audio engine directly and requires a different driver. | |
11 | * | |
12 | * Thanks to National Semiconductor for providing the needed information | |
13 | * on the XpressAudio(tm) internals. | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License as published by the | |
17 | * Free Software Foundation; either version 2, or (at your option) any | |
18 | * later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, but | |
21 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
23 | * General Public License for more details. | |
24 | * | |
25 | * TO DO: | |
26 | * Investigate whether we can portably support Cognac (5520) in the | |
27 | * same manner. | |
28 | */ | |
29 | ||
1da177e4 LT |
30 | #include <linux/delay.h> |
31 | #include <linux/init.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/pci.h> | |
34 | ||
35 | #include "sound_config.h" | |
36 | ||
37 | #include "sb.h" | |
38 | ||
39 | /* | |
40 | * Read a soundblaster compatible mixer register. | |
41 | * In this case we are actually reading an SMI trap | |
42 | * not real hardware. | |
43 | */ | |
44 | ||
45 | static u8 __devinit mixer_read(unsigned long io, u8 reg) | |
46 | { | |
47 | outb(reg, io + 4); | |
48 | udelay(20); | |
49 | reg = inb(io + 5); | |
50 | udelay(20); | |
51 | return reg; | |
52 | } | |
53 | ||
54 | static int __devinit probe_one(struct pci_dev *pdev, const struct pci_device_id *ent) | |
55 | { | |
56 | struct address_info *hw_config; | |
57 | unsigned long base; | |
58 | void __iomem *mem; | |
59 | unsigned long io; | |
60 | u16 map; | |
61 | u8 irq, dma8, dma16; | |
62 | int oldquiet; | |
63 | extern int sb_be_quiet; | |
64 | ||
65 | base = pci_resource_start(pdev, 0); | |
66 | if(base == 0UL) | |
67 | return 1; | |
68 | ||
69 | mem = ioremap(base, 128); | |
cb6969e8 | 70 | if (!mem) |
1da177e4 LT |
71 | return 1; |
72 | map = readw(mem + 0x18); /* Read the SMI enables */ | |
73 | iounmap(mem); | |
74 | ||
75 | /* Map bits | |
76 | 0:1 * 0x20 + 0x200 = sb base | |
77 | 2 sb enable | |
78 | 3 adlib enable | |
79 | 5 MPU enable 0x330 | |
80 | 6 MPU enable 0x300 | |
81 | ||
82 | The other bits may be used internally so must be masked */ | |
83 | ||
84 | io = 0x220 + 0x20 * (map & 3); | |
85 | ||
86 | if(map & (1<<2)) | |
87 | printk(KERN_INFO "kahlua: XpressAudio at 0x%lx\n", io); | |
88 | else | |
89 | return 1; | |
90 | ||
91 | if(map & (1<<5)) | |
92 | printk(KERN_INFO "kahlua: MPU at 0x300\n"); | |
93 | else if(map & (1<<6)) | |
94 | printk(KERN_INFO "kahlua: MPU at 0x330\n"); | |
95 | ||
96 | irq = mixer_read(io, 0x80) & 0x0F; | |
97 | dma8 = mixer_read(io, 0x81); | |
98 | ||
99 | // printk("IRQ=%x MAP=%x DMA=%x\n", irq, map, dma8); | |
100 | ||
101 | if(dma8 & 0x20) | |
102 | dma16 = 5; | |
103 | else if(dma8 & 0x40) | |
104 | dma16 = 6; | |
105 | else if(dma8 & 0x80) | |
106 | dma16 = 7; | |
107 | else | |
108 | { | |
109 | printk(KERN_ERR "kahlua: No 16bit DMA enabled.\n"); | |
110 | return 1; | |
111 | } | |
112 | ||
113 | if(dma8 & 0x01) | |
114 | dma8 = 0; | |
115 | else if(dma8 & 0x02) | |
116 | dma8 = 1; | |
117 | else if(dma8 & 0x08) | |
118 | dma8 = 3; | |
119 | else | |
120 | { | |
121 | printk(KERN_ERR "kahlua: No 8bit DMA enabled.\n"); | |
122 | return 1; | |
123 | } | |
124 | ||
125 | if(irq & 1) | |
126 | irq = 9; | |
127 | else if(irq & 2) | |
128 | irq = 5; | |
129 | else if(irq & 4) | |
130 | irq = 7; | |
131 | else if(irq & 8) | |
132 | irq = 10; | |
133 | else | |
134 | { | |
135 | printk(KERN_ERR "kahlua: SB IRQ not set.\n"); | |
136 | return 1; | |
137 | } | |
138 | ||
139 | printk(KERN_INFO "kahlua: XpressAudio on IRQ %d, DMA %d, %d\n", | |
140 | irq, dma8, dma16); | |
141 | ||
3159f06d | 142 | hw_config = kzalloc(sizeof(struct address_info), GFP_KERNEL); |
1da177e4 LT |
143 | if(hw_config == NULL) |
144 | { | |
145 | printk(KERN_ERR "kahlua: out of memory.\n"); | |
146 | return 1; | |
147 | } | |
1da177e4 LT |
148 | |
149 | pci_set_drvdata(pdev, hw_config); | |
150 | ||
151 | hw_config->io_base = io; | |
152 | hw_config->irq = irq; | |
153 | hw_config->dma = dma8; | |
154 | hw_config->dma2 = dma16; | |
155 | hw_config->name = "Cyrix XpressAudio"; | |
156 | hw_config->driver_use_1 = SB_NO_MIDI | SB_PCI_IRQ; | |
157 | ||
158 | if (!request_region(io, 16, "soundblaster")) | |
159 | goto err_out_free; | |
160 | ||
161 | if(sb_dsp_detect(hw_config, 0, 0, NULL)==0) | |
162 | { | |
163 | printk(KERN_ERR "kahlua: audio not responding.\n"); | |
164 | release_region(io, 16); | |
165 | goto err_out_free; | |
166 | } | |
167 | ||
168 | oldquiet = sb_be_quiet; | |
169 | sb_be_quiet = 1; | |
170 | if(sb_dsp_init(hw_config, THIS_MODULE)) | |
171 | { | |
172 | sb_be_quiet = oldquiet; | |
173 | goto err_out_free; | |
174 | } | |
175 | sb_be_quiet = oldquiet; | |
176 | ||
177 | return 0; | |
178 | ||
179 | err_out_free: | |
180 | pci_set_drvdata(pdev, NULL); | |
181 | kfree(hw_config); | |
182 | return 1; | |
183 | } | |
184 | ||
185 | static void __devexit remove_one(struct pci_dev *pdev) | |
186 | { | |
187 | struct address_info *hw_config = pci_get_drvdata(pdev); | |
188 | sb_dsp_unload(hw_config, 0); | |
189 | pci_set_drvdata(pdev, NULL); | |
190 | kfree(hw_config); | |
191 | } | |
192 | ||
193 | MODULE_AUTHOR("Alan Cox"); | |
194 | MODULE_DESCRIPTION("Kahlua VSA1 PCI Audio"); | |
195 | MODULE_LICENSE("GPL"); | |
196 | ||
197 | /* | |
198 | * 5530 only. The 5510/5520 decode is different. | |
199 | */ | |
200 | ||
201 | static struct pci_device_id id_tbl[] = { | |
202 | { PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
203 | { } | |
204 | }; | |
205 | ||
206 | MODULE_DEVICE_TABLE(pci, id_tbl); | |
207 | ||
208 | static struct pci_driver kahlua_driver = { | |
209 | .name = "kahlua", | |
210 | .id_table = id_tbl, | |
211 | .probe = probe_one, | |
212 | .remove = __devexit_p(remove_one), | |
213 | }; | |
214 | ||
215 | ||
216 | static int __init kahlua_init_module(void) | |
217 | { | |
218 | printk(KERN_INFO "Cyrix Kahlua VSA1 XpressAudio support (c) Copyright 2003 Red Hat Inc\n"); | |
46654728 | 219 | return pci_register_driver(&kahlua_driver); |
1da177e4 LT |
220 | } |
221 | ||
222 | static void __devexit kahlua_cleanup_module(void) | |
223 | { | |
224 | pci_unregister_driver(&kahlua_driver); | |
225 | } | |
226 | ||
227 | ||
228 | module_init(kahlua_init_module); | |
229 | module_exit(kahlua_cleanup_module); | |
230 |