Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * SMC 37C93X initialization code | |
3 | */ | |
4 | ||
1da177e4 LT |
5 | #include <linux/kernel.h> |
6 | ||
1da177e4 LT |
7 | #include <linux/mm.h> |
8 | #include <linux/init.h> | |
9 | #include <linux/delay.h> | |
10 | ||
11 | #include <asm/hwrpb.h> | |
12 | #include <asm/io.h> | |
13 | #include <asm/segment.h> | |
14 | ||
15 | #define SMC_DEBUG 0 | |
16 | ||
17 | #if SMC_DEBUG | |
18 | # define DBG_DEVS(args) printk args | |
19 | #else | |
20 | # define DBG_DEVS(args) | |
21 | #endif | |
22 | ||
23 | #define KB 1024 | |
24 | #define MB (1024*KB) | |
25 | #define GB (1024*MB) | |
26 | ||
27 | /* device "activate" register contents */ | |
28 | #define DEVICE_ON 1 | |
29 | #define DEVICE_OFF 0 | |
30 | ||
31 | /* configuration on/off keys */ | |
32 | #define CONFIG_ON_KEY 0x55 | |
33 | #define CONFIG_OFF_KEY 0xaa | |
34 | ||
35 | /* configuration space device definitions */ | |
36 | #define FDC 0 | |
37 | #define IDE1 1 | |
38 | #define IDE2 2 | |
39 | #define PARP 3 | |
40 | #define SER1 4 | |
41 | #define SER2 5 | |
42 | #define RTCL 6 | |
43 | #define KYBD 7 | |
44 | #define AUXIO 8 | |
45 | ||
46 | /* Chip register offsets from base */ | |
47 | #define CONFIG_CONTROL 0x02 | |
48 | #define INDEX_ADDRESS 0x03 | |
49 | #define LOGICAL_DEVICE_NUMBER 0x07 | |
50 | #define DEVICE_ID 0x20 | |
51 | #define DEVICE_REV 0x21 | |
52 | #define POWER_CONTROL 0x22 | |
53 | #define POWER_MGMT 0x23 | |
54 | #define OSC 0x24 | |
55 | ||
56 | #define ACTIVATE 0x30 | |
57 | #define ADDR_HI 0x60 | |
58 | #define ADDR_LO 0x61 | |
59 | #define INTERRUPT_SEL 0x70 | |
60 | #define INTERRUPT_SEL_2 0x72 /* KYBD/MOUS only */ | |
61 | #define DMA_CHANNEL_SEL 0x74 /* FDC/PARP only */ | |
62 | ||
63 | #define FDD_MODE_REGISTER 0x90 | |
64 | #define FDD_OPTION_REGISTER 0x91 | |
65 | ||
66 | /* values that we read back that are expected ... */ | |
67 | #define VALID_DEVICE_ID 2 | |
68 | ||
69 | /* default device addresses */ | |
70 | #define KYBD_INTERRUPT 1 | |
71 | #define MOUS_INTERRUPT 12 | |
72 | #define COM2_BASE 0x2f8 | |
73 | #define COM2_INTERRUPT 3 | |
74 | #define COM1_BASE 0x3f8 | |
75 | #define COM1_INTERRUPT 4 | |
76 | #define PARP_BASE 0x3bc | |
77 | #define PARP_INTERRUPT 7 | |
78 | ||
79 | static unsigned long __init SMCConfigState(unsigned long baseAddr) | |
80 | { | |
81 | unsigned char devId; | |
1da177e4 LT |
82 | |
83 | unsigned long configPort; | |
84 | unsigned long indexPort; | |
85 | unsigned long dataPort; | |
86 | ||
87 | int i; | |
88 | ||
89 | configPort = indexPort = baseAddr; | |
90 | dataPort = configPort + 1; | |
91 | ||
92 | #define NUM_RETRIES 5 | |
93 | ||
94 | for (i = 0; i < NUM_RETRIES; i++) | |
95 | { | |
96 | outb(CONFIG_ON_KEY, configPort); | |
97 | outb(CONFIG_ON_KEY, configPort); | |
98 | outb(DEVICE_ID, indexPort); | |
99 | devId = inb(dataPort); | |
100 | if (devId == VALID_DEVICE_ID) { | |
101 | outb(DEVICE_REV, indexPort); | |
280da4e4 | 102 | /* unsigned char devRev = */ inb(dataPort); |
1da177e4 LT |
103 | break; |
104 | } | |
105 | else | |
106 | udelay(100); | |
107 | } | |
108 | return (i != NUM_RETRIES) ? baseAddr : 0L; | |
109 | } | |
110 | ||
111 | static void __init SMCRunState(unsigned long baseAddr) | |
112 | { | |
113 | outb(CONFIG_OFF_KEY, baseAddr); | |
114 | } | |
115 | ||
116 | static unsigned long __init SMCDetectUltraIO(void) | |
117 | { | |
118 | unsigned long baseAddr; | |
119 | ||
120 | baseAddr = 0x3F0; | |
121 | if ( ( baseAddr = SMCConfigState( baseAddr ) ) == 0x3F0 ) { | |
122 | return( baseAddr ); | |
123 | } | |
124 | baseAddr = 0x370; | |
125 | if ( ( baseAddr = SMCConfigState( baseAddr ) ) == 0x370 ) { | |
126 | return( baseAddr ); | |
127 | } | |
128 | return( ( unsigned long )0 ); | |
129 | } | |
130 | ||
131 | static void __init SMCEnableDevice(unsigned long baseAddr, | |
132 | unsigned long device, | |
133 | unsigned long portaddr, | |
134 | unsigned long interrupt) | |
135 | { | |
136 | unsigned long indexPort; | |
137 | unsigned long dataPort; | |
138 | ||
139 | indexPort = baseAddr; | |
140 | dataPort = baseAddr + 1; | |
141 | ||
142 | outb(LOGICAL_DEVICE_NUMBER, indexPort); | |
143 | outb(device, dataPort); | |
144 | ||
145 | outb(ADDR_LO, indexPort); | |
146 | outb(( portaddr & 0xFF ), dataPort); | |
147 | ||
148 | outb(ADDR_HI, indexPort); | |
149 | outb((portaddr >> 8) & 0xFF, dataPort); | |
150 | ||
151 | outb(INTERRUPT_SEL, indexPort); | |
152 | outb(interrupt, dataPort); | |
153 | ||
154 | outb(ACTIVATE, indexPort); | |
155 | outb(DEVICE_ON, dataPort); | |
156 | } | |
157 | ||
158 | static void __init SMCEnableKYBD(unsigned long baseAddr) | |
159 | { | |
160 | unsigned long indexPort; | |
161 | unsigned long dataPort; | |
162 | ||
163 | indexPort = baseAddr; | |
164 | dataPort = baseAddr + 1; | |
165 | ||
166 | outb(LOGICAL_DEVICE_NUMBER, indexPort); | |
167 | outb(KYBD, dataPort); | |
168 | ||
169 | outb(INTERRUPT_SEL, indexPort); /* Primary interrupt select */ | |
170 | outb(KYBD_INTERRUPT, dataPort); | |
171 | ||
172 | outb(INTERRUPT_SEL_2, indexPort); /* Secondary interrupt select */ | |
173 | outb(MOUS_INTERRUPT, dataPort); | |
174 | ||
175 | outb(ACTIVATE, indexPort); | |
176 | outb(DEVICE_ON, dataPort); | |
177 | } | |
178 | ||
179 | static void __init SMCEnableFDC(unsigned long baseAddr) | |
180 | { | |
181 | unsigned long indexPort; | |
182 | unsigned long dataPort; | |
183 | ||
184 | unsigned char oldValue; | |
185 | ||
186 | indexPort = baseAddr; | |
187 | dataPort = baseAddr + 1; | |
188 | ||
189 | outb(LOGICAL_DEVICE_NUMBER, indexPort); | |
190 | outb(FDC, dataPort); | |
191 | ||
192 | outb(FDD_MODE_REGISTER, indexPort); | |
193 | oldValue = inb(dataPort); | |
194 | ||
195 | oldValue |= 0x0E; /* Enable burst mode */ | |
196 | outb(oldValue, dataPort); | |
197 | ||
198 | outb(INTERRUPT_SEL, indexPort); /* Primary interrupt select */ | |
199 | outb(0x06, dataPort ); | |
200 | ||
201 | outb(DMA_CHANNEL_SEL, indexPort); /* DMA channel select */ | |
202 | outb(0x02, dataPort); | |
203 | ||
204 | outb(ACTIVATE, indexPort); | |
205 | outb(DEVICE_ON, dataPort); | |
206 | } | |
207 | ||
208 | #if SMC_DEBUG | |
209 | static void __init SMCReportDeviceStatus(unsigned long baseAddr) | |
210 | { | |
211 | unsigned long indexPort; | |
212 | unsigned long dataPort; | |
213 | unsigned char currentControl; | |
214 | ||
215 | indexPort = baseAddr; | |
216 | dataPort = baseAddr + 1; | |
217 | ||
218 | outb(POWER_CONTROL, indexPort); | |
219 | currentControl = inb(dataPort); | |
220 | ||
221 | printk(currentControl & (1 << FDC) | |
222 | ? "\t+FDC Enabled\n" : "\t-FDC Disabled\n"); | |
223 | printk(currentControl & (1 << IDE1) | |
224 | ? "\t+IDE1 Enabled\n" : "\t-IDE1 Disabled\n"); | |
225 | printk(currentControl & (1 << IDE2) | |
226 | ? "\t+IDE2 Enabled\n" : "\t-IDE2 Disabled\n"); | |
227 | printk(currentControl & (1 << PARP) | |
228 | ? "\t+PARP Enabled\n" : "\t-PARP Disabled\n"); | |
229 | printk(currentControl & (1 << SER1) | |
230 | ? "\t+SER1 Enabled\n" : "\t-SER1 Disabled\n"); | |
231 | printk(currentControl & (1 << SER2) | |
232 | ? "\t+SER2 Enabled\n" : "\t-SER2 Disabled\n"); | |
233 | ||
234 | printk( "\n" ); | |
235 | } | |
236 | #endif | |
237 | ||
238 | int __init SMC93x_Init(void) | |
239 | { | |
240 | unsigned long SMCUltraBase; | |
241 | unsigned long flags; | |
242 | ||
243 | local_irq_save(flags); | |
244 | if ((SMCUltraBase = SMCDetectUltraIO()) != 0UL) { | |
245 | #if SMC_DEBUG | |
246 | SMCReportDeviceStatus(SMCUltraBase); | |
247 | #endif | |
248 | SMCEnableDevice(SMCUltraBase, SER1, COM1_BASE, COM1_INTERRUPT); | |
249 | DBG_DEVS(("SMC FDC37C93X: SER1 done\n")); | |
250 | SMCEnableDevice(SMCUltraBase, SER2, COM2_BASE, COM2_INTERRUPT); | |
251 | DBG_DEVS(("SMC FDC37C93X: SER2 done\n")); | |
252 | SMCEnableDevice(SMCUltraBase, PARP, PARP_BASE, PARP_INTERRUPT); | |
253 | DBG_DEVS(("SMC FDC37C93X: PARP done\n")); | |
254 | /* On PC164, IDE on the SMC is not enabled; | |
255 | CMD646 (PCI) on MB */ | |
256 | SMCEnableKYBD(SMCUltraBase); | |
257 | DBG_DEVS(("SMC FDC37C93X: KYB done\n")); | |
258 | SMCEnableFDC(SMCUltraBase); | |
259 | DBG_DEVS(("SMC FDC37C93X: FDC done\n")); | |
260 | #if SMC_DEBUG | |
261 | SMCReportDeviceStatus(SMCUltraBase); | |
262 | #endif | |
263 | SMCRunState(SMCUltraBase); | |
264 | local_irq_restore(flags); | |
265 | printk("SMC FDC37C93X Ultra I/O Controller found @ 0x%lx\n", | |
266 | SMCUltraBase); | |
267 | return 1; | |
268 | } | |
269 | else { | |
270 | local_irq_restore(flags); | |
271 | DBG_DEVS(("No SMC FDC37C93X Ultra I/O Controller found\n")); | |
272 | return 0; | |
273 | } | |
274 | } |