FreeBSD/Linux Kernel Cross Reference
sys/dev/exca/excareg.h
1 /* $NetBSD: i82365reg.h,v 1.3 1998/12/20 17:53:28 nathanw Exp $ */
2 /* $FreeBSD: releng/5.0/sys/dev/exca/excareg.h 100703 2002-07-26 08:01:08Z imp $ */
3
4 /*
5 * Copyright (c) 2002 M Warner Losh. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * This software may be derived from NetBSD i82365.c and other files with
28 * the following copyright:
29 *
30 * Copyright (c) 1997 Marc Horowitz. All rights reserved.
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 * 3. All advertising materials mentioning features or use of this software
41 * must display the following acknowledgement:
42 * This product includes software developed by Marc Horowitz.
43 * 4. The name of the author may not be used to endorse or promote products
44 * derived from this software without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 */
57
58 #ifndef _SYS_DEV_EXCA_EXCAREG_H
59 #define _SYS_DEV_EXCA_EXCAREG_H
60
61 /*
62 * All information is from the intel 82365sl PC Card Interface Controller
63 * (PCIC) data sheet, marked "preliminary". Order number 290423-002, January
64 * 1993.
65 */
66
67 #define EXCA_IOSIZE 2
68
69 #define EXCA_REG_INDEX 0
70 #define EXCA_REG_DATA 1
71
72 #define EXCA_NSLOTS 4 /* 2 in 2 chips */
73
74 /*
75 * I/o ports
76 */
77 #define EXCA_INDEX0 0x3e0
78
79 /*
80 * The PCIC allows two chips to share the same address. In order not to run
81 * afoul of the bsd device model, this driver will treat those chips as
82 * the same device.
83 */
84
85 #define EXCA_CHIP0_BASE 0x00
86 #define EXCA_CHIP1_BASE 0x80
87
88 /* Each PCIC chip can drive two sockets */
89
90 #define EXCA_SOCKET_SIZE 0x40
91 #define EXCA_SOCKETA_INDEX 0x00
92 #define EXCA_SOCKETB_INDEX EXCA_SOCKET_SIZE
93
94 /* general setup registers */
95
96 #define EXCA_IDENT 0x00 /* RO */
97 #define EXCA_IDENT_IFTYPE_MASK 0xC0
98 #define EXCA_IDENT_IFTYPE_IO_ONLY 0x00
99 #define EXCA_IDENT_IFTYPE_MEM_ONLY 0x40
100 #define EXCA_IDENT_IFTYPE_MEM_AND_IO 0x80
101 #define EXCA_IDENT_IFTYPE_RESERVED 0xC0
102 #define EXCA_IDENT_ZERO 0x30
103 #define EXCA_IDENT_REV_MASK 0x0F
104 #define EXCA_IDENT_REV_I82365SLR0 0x02
105 #define EXCA_IDENT_REV_I82365SLR1 0x03
106
107 #define EXCA_IF_STATUS 0x01 /* RO */
108 #define EXCA_IF_STATUS_GPI 0x80 /* General Purpose Input */
109 #define EXCA_IF_STATUS_POWERACTIVE 0x40
110 #define EXCA_IF_STATUS_READY 0x20 /* really READY/!BUSY */
111 #define EXCA_IF_STATUS_MEM_WP 0x10
112 #define EXCA_IF_STATUS_CARDDETECT_MASK 0x0C
113 #define EXCA_IF_STATUS_CARDDETECT_PRESENT 0x0C
114 #define EXCA_IF_STATUS_BATTERY_MASK 0x03
115 #define EXCA_IF_STATUS_BATTERY_DEAD1 0x00
116 #define EXCA_IF_STATUS_BATTERY_DEAD2 0x01
117 #define EXCA_IF_STATUS_BATTERY_WARNING 0x02
118 #define EXCA_IF_STATUS_BATTERY_GOOD 0x03
119
120 #define EXCA_PWRCTL 0x02 /* RW */
121 #define EXCA_PWRCTL_OE 0x80 /* output enable */
122 #define EXCA_PWRCTL_DISABLE_RESETDRV 0x40
123 #define EXCA_PWRCTL_AUTOSWITCH_ENABLE 0x20
124 #define EXCA_PWRCTL_PWR_ENABLE 0x10
125 #define EXCA_PWRCTL_VPP2_MASK 0x0C
126 /* XXX these are a little unclear from the data sheet */
127 #define EXCA_PWRCTL_VPP2_RESERVED 0x0C
128 #define EXCA_PWRCTL_VPP2_EN1 0x08
129 #define EXCA_PWRCTL_VPP2_EN0 0x04
130 #define EXCA_PWRCTL_VPP2_ENX 0x00
131 #define EXCA_PWRCTL_VPP1_MASK 0x03
132 /* XXX these are a little unclear from the data sheet */
133 #define EXCA_PWRCTL_VPP1_RESERVED 0x03
134 #define EXCA_PWRCTL_VPP1_EN1 0x02
135 #define EXCA_PWRCTL_VPP1_EN0 0x01
136 #define EXCA_PWRCTL_VPP1_ENX 0x00
137
138 #define EXCA_CSC 0x04 /* RW */
139 #define EXCA_CSC_ZERO 0xE0
140 #define EXCA_CSC_GPI 0x10
141 #define EXCA_CSC_CD 0x08 /* Card Detect Change */
142 #define EXCA_CSC_READY 0x04
143 #define EXCA_CSC_BATTWARN 0x02
144 #define EXCA_CSC_BATTDEAD 0x01 /* for memory cards */
145 #define EXCA_CSC_RI 0x01 /* for i/o cards */
146
147 #define EXCA_ADDRWIN_ENABLE 0x06 /* RW */
148 #define EXCA_ADDRWIN_ENABLE_IO1 0x80
149 #define EXCA_ADDRWIN_ENABLE_IO0 0x40
150 #define EXCA_ADDRWIN_ENABLE_MEMCS16 0x20 /* rtfds if you care */
151 #define EXCA_ADDRWIN_ENABLE_MEM4 0x10
152 #define EXCA_ADDRWIN_ENABLE_MEM3 0x08
153 #define EXCA_ADDRWIN_ENABLE_MEM2 0x04
154 #define EXCA_ADDRWIN_ENABLE_MEM1 0x02
155 #define EXCA_ADDRWIN_ENABLE_MEM0 0x01
156
157 #define EXCA_CARD_DETECT 0x16 /* RW */
158 #define EXCA_CARD_DETECT_RESERVED 0xC0
159 #define EXCA_CARD_DETECT_SW_INTR 0x20
160 #define EXCA_CARD_DETECT_RESUME_ENABLE 0x10
161 #define EXCA_CARD_DETECT_GPI_TRANSCTL 0x08
162 #define EXCA_CARD_DETECT_GPI_ENABLE 0x04
163 #define EXCA_CARD_DETECT_CFGRST_ENABLE 0x02
164 #define EXCA_CARD_DETECT_MEMDLY_INHIBIT 0x01
165
166 /* interrupt registers */
167
168 #define EXCA_INTR 0x03 /* RW */
169 #define EXCA_INTR_RI_ENABLE 0x80
170 #define EXCA_INTR_RESET 0x40 /* active low (zero) */
171 #define EXCA_INTR_CARDTYPE_MASK 0x20
172 #define EXCA_INTR_CARDTYPE_IO 0x20
173 #define EXCA_INTR_CARDTYPE_MEM 0x00
174 #define EXCA_INTR_ENABLE 0x10
175 #define EXCA_INTR_IRQ_MASK 0x0F
176 #define EXCA_INTR_IRQ_SHIFT 0
177 #define EXCA_INTR_IRQ_NONE 0x00
178 #define EXCA_INTR_IRQ_RESERVED1 0x01
179 #define EXCA_INTR_IRQ_RESERVED2 0x02
180 #define EXCA_INTR_IRQ3 0x03
181 #define EXCA_INTR_IRQ4 0x04
182 #define EXCA_INTR_IRQ5 0x05
183 #define EXCA_INTR_IRQ_RESERVED6 0x06
184 #define EXCA_INTR_IRQ7 0x07
185 #define EXCA_INTR_IRQ_RESERVED8 0x08
186 #define EXCA_INTR_IRQ9 0x09
187 #define EXCA_INTR_IRQ10 0x0A
188 #define EXCA_INTR_IRQ11 0x0B
189 #define EXCA_INTR_IRQ12 0x0C
190 #define EXCA_INTR_IRQ_RESERVED13 0x0D
191 #define EXCA_INTR_IRQ14 0x0E
192 #define EXCA_INTR_IRQ15 0x0F
193
194 #define EXCA_INTR_IRQ_VALIDMASK 0xDEB8 /* 1101 1110 1011 1000 */
195
196 #define EXCA_CSC_INTR 0x05 /* RW */
197 #define EXCA_CSC_INTR_IRQ_MASK 0xF0
198 #define EXCA_CSC_INTR_IRQ_SHIFT 4
199 #define EXCA_CSC_INTR_IRQ_NONE 0x00
200 #define EXCA_CSC_INTR_IRQ_RESERVED1 0x10
201 #define EXCA_CSC_INTR_IRQ_RESERVED2 0x20
202 #define EXCA_CSC_INTR_IRQ3 0x30
203 #define EXCA_CSC_INTR_IRQ4 0x40
204 #define EXCA_CSC_INTR_IRQ5 0x50
205 #define EXCA_CSC_INTR_IRQ_RESERVED6 0x60
206 #define EXCA_CSC_INTR_IRQ7 0x70
207 #define EXCA_CSC_INTR_IRQ_RESERVED8 0x80
208 #define EXCA_CSC_INTR_IRQ9 0x90
209 #define EXCA_CSC_INTR_IRQ10 0xA0
210 #define EXCA_CSC_INTR_IRQ11 0xB0
211 #define EXCA_CSC_INTR_IRQ12 0xC0
212 #define EXCA_CSC_INTR_IRQ_RESERVED13 0xD0
213 #define EXCA_CSC_INTR_IRQ14 0xE0
214 #define EXCA_CSC_INTR_IRQ15 0xF0
215 #define EXCA_CSC_INTR_CD_ENABLE 0x08
216 #define EXCA_CSC_INTR_READY_ENABLE 0x04
217 #define EXCA_CSC_INTR_BATTWARN_ENABLE 0x02
218 #define EXCA_CSC_INTR_BATTDEAD_ENABLE 0x01 /* for memory cards */
219 #define EXCA_CSC_INTR_RI_ENABLE 0x01 /* for I/O cards */
220
221 #define EXCA_CSC_INTR_IRQ_VALIDMASK 0xDEB8 /* 1101 1110 1011 1000 */
222
223 /* I/O registers */
224
225 #define EXCA_IO_WINS 2
226
227 #define EXCA_IOCTL 0x07 /* RW */
228 #define EXCA_IOCTL_IO1_WAITSTATE 0x80
229 #define EXCA_IOCTL_IO1_ZEROWAIT 0x40
230 #define EXCA_IOCTL_IO1_IOCS16SRC_MASK 0x20
231 #define EXCA_IOCTL_IO1_IOCS16SRC_CARD 0x20
232 #define EXCA_IOCTL_IO1_IOCS16SRC_DATASIZE 0x00
233 #define EXCA_IOCTL_IO1_DATASIZE_MASK 0x10
234 #define EXCA_IOCTL_IO1_DATASIZE_16BIT 0x10
235 #define EXCA_IOCTL_IO1_DATASIZE_8BIT 0x00
236 #define EXCA_IOCTL_IO0_WAITSTATE 0x08
237 #define EXCA_IOCTL_IO0_ZEROWAIT 0x04
238 #define EXCA_IOCTL_IO0_IOCS16SRC_MASK 0x02
239 #define EXCA_IOCTL_IO0_IOCS16SRC_CARD 0x02
240 #define EXCA_IOCTL_IO0_IOCS16SRC_DATASIZE 0x00
241 #define EXCA_IOCTL_IO0_DATASIZE_MASK 0x01
242 #define EXCA_IOCTL_IO0_DATASIZE_16BIT 0x01
243 #define EXCA_IOCTL_IO0_DATASIZE_8BIT 0x00
244
245 #define EXCA_IOADDR0_START_LSB 0x08
246 #define EXCA_IOADDR0_START_MSB 0x09
247 #define EXCA_IOADDR0_STOP_LSB 0x0A
248 #define EXCA_IOADDR0_STOP_MSB 0x0B
249 #define EXCA_IOADDR1_START_LSB 0x0C
250 #define EXCA_IOADDR1_START_MSB 0x0D
251 #define EXCA_IOADDR1_STOP_LSB 0x0E
252 #define EXCA_IOADDR1_STOP_MSB 0x0F
253
254 /* memory registers */
255
256 /*
257 * memory window addresses refer to bits A23-A12 of the ISA system memory
258 * address. This is a shift of 12 bits. The LSB contains A19-A12, and the
259 * MSB contains A23-A20, plus some other bits.
260 */
261
262 #define EXCA_MEM_WINS 5
263
264 #define EXCA_MEM_SHIFT 12
265 #define EXCA_MEM_PAGESIZE (1<<EXCA_MEM_SHIFT)
266
267 #define EXCA_SYSMEM_ADDRX_SHIFT EXCA_MEM_SHIFT
268 #define EXCA_SYSMEM_ADDRX_START_MSB_DATASIZE_MASK 0x80
269 #define EXCA_SYSMEM_ADDRX_START_MSB_DATASIZE_16BIT 0x80
270 #define EXCA_SYSMEM_ADDRX_START_MSB_DATASIZE_8BIT 0x00
271 #define EXCA_SYSMEM_ADDRX_START_MSB_ZEROWAIT 0x40
272 #define EXCA_SYSMEM_ADDRX_START_MSB_SCRATCH_MASK 0x30
273 #define EXCA_SYSMEM_ADDRX_START_MSB_ADDR_MASK 0x0F
274
275 #define EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT_MASK 0xC0
276 #define EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT0 0x00
277 #define EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT1 0x40
278 #define EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT2 0x80
279 #define EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT3 0xC0
280 #define EXCA_SYSMEM_ADDRX_STOP_MSB_ADDR_MASK 0x0F
281
282 /*
283 * The card side of a memory mapping consists of bits A19-A12 of the card
284 * memory address in the LSB, and A25-A20 plus some other bits in the MSB.
285 * Again, the shift is 12 bits.
286 */
287
288 #define EXCA_CARDMEM_ADDRX_SHIFT EXCA_MEM_SHIFT
289 #define EXCA_CARDMEM_ADDRX_MSB_WP 0x80
290 #define EXCA_CARDMEM_ADDRX_MSB_REGACTIVE_MASK 0x40
291 #define EXCA_CARDMEM_ADDRX_MSB_REGACTIVE_ATTR 0x40
292 #define EXCA_CARDMEM_ADDRX_MSB_REGACTIVE_COMMON 0x00
293 #define EXCA_CARDMEM_ADDRX_MSB_ADDR_MASK 0x3F
294
295 #define EXCA_SYSMEM_ADDR0_START_LSB 0x10
296 #define EXCA_SYSMEM_ADDR0_START_MSB 0x11
297 #define EXCA_SYSMEM_ADDR0_STOP_LSB 0x12
298 #define EXCA_SYSMEM_ADDR0_STOP_MSB 0x13
299
300 #define EXCA_CARDMEM_ADDR0_LSB 0x14
301 #define EXCA_CARDMEM_ADDR0_MSB 0x15
302
303 /* #define EXCA_RESERVED 0x17 */
304
305 #define EXCA_SYSMEM_ADDR1_START_LSB 0x18
306 #define EXCA_SYSMEM_ADDR1_START_MSB 0x19
307 #define EXCA_SYSMEM_ADDR1_STOP_LSB 0x1A
308 #define EXCA_SYSMEM_ADDR1_STOP_MSB 0x1B
309
310 #define EXCA_CARDMEM_ADDR1_LSB 0x1C
311 #define EXCA_CARDMEM_ADDR1_MSB 0x1D
312
313 #define EXCA_SYSMEM_ADDR2_START_LSB 0x20
314 #define EXCA_SYSMEM_ADDR2_START_MSB 0x21
315 #define EXCA_SYSMEM_ADDR2_STOP_LSB 0x22
316 #define EXCA_SYSMEM_ADDR2_STOP_MSB 0x23
317
318 #define EXCA_CARDMEM_ADDR2_LSB 0x24
319 #define EXCA_CARDMEM_ADDR2_MSB 0x25
320
321 /* #define EXCA_RESERVED 0x26 */
322 /* #define EXCA_RESERVED 0x27 */
323
324 #define EXCA_SYSMEM_ADDR3_START_LSB 0x28
325 #define EXCA_SYSMEM_ADDR3_START_MSB 0x29
326 #define EXCA_SYSMEM_ADDR3_STOP_LSB 0x2A
327 #define EXCA_SYSMEM_ADDR3_STOP_MSB 0x2B
328
329 #define EXCA_CARDMEM_ADDR3_LSB 0x2C
330 #define EXCA_CARDMEM_ADDR3_MSB 0x2D
331
332 /* #define EXCA_RESERVED 0x2E */
333 /* #define EXCA_RESERVED 0x2F */
334
335 #define EXCA_SYSMEM_ADDR4_START_LSB 0x30
336 #define EXCA_SYSMEM_ADDR4_START_MSB 0x31
337 #define EXCA_SYSMEM_ADDR4_STOP_LSB 0x32
338 #define EXCA_SYSMEM_ADDR4_STOP_MSB 0x33
339
340 #define EXCA_CARDMEM_ADDR4_LSB 0x34
341 #define EXCA_CARDMEM_ADDR4_MSB 0x35
342
343 /* #define EXCA_RESERVED 0x36 */
344 /* #define EXCA_RESERVED 0x37 */
345 /* #define EXCA_RESERVED 0x38 */
346 /* #define EXCA_RESERVED 0x39 */
347 /* #define EXCA_RESERVED 0x3A */
348 /* #define EXCA_RESERVED 0x3B */
349 /* #define EXCA_RESERVED 0x3C */
350 /* #define EXCA_RESERVED 0x3D */
351 /* #define EXCA_RESERVED 0x3E */
352 /* #define EXCA_RESERVED 0x3F */
353
354 /* cardbus extensions - memory window page registers */
355
356 #define EXCA_MEMREG_WIN_SHIFT 24
357 #define EXCA_SYSMEM_ADDR0_WIN 0x40
358 #define EXCA_SYSMEM_ADDR1_WIN 0x41
359 #define EXCA_SYSMEM_ADDR2_WIN 0x42
360 #define EXCA_SYSMEM_ADDR3_WIN 0x43
361 #define EXCA_SYSMEM_ADDR4_WIN 0x44
362
363 /* vendor-specific registers */
364
365 #define EXCA_INTEL_GLOBAL_CTL 0x1E /* RW */
366 #define EXCA_INTEL_GLOBAL_CTL_RESERVED 0xF0
367 #define EXCA_INTEL_GLOBAL_CTL_IRQ14PULSE_ENABLE 0x08
368 #define EXCA_INTEL_GLOBAL_CTL_EXPLICIT_CSC_ACK 0x04
369 #define EXCA_INTEL_GLOBAL_CTL_IRQLEVEL_ENABLE 0x02
370 #define EXCA_INTEL_GLOBAL_CTL_POWERDOWN 0x01
371
372 #define EXCA_CIRRUS_MISC_CTL_2 0x1E
373 #define EXCA_CIRRUS_MISC_CTL_2_SUSPEND 0x04
374
375 #define EXCA_CIRRUS_CHIP_INFO 0x1F
376 #define EXCA_CIRRUS_CHIP_INFO_CHIP_ID 0xC0
377 #define EXCA_CIRRUS_CHIP_INFO_SLOTS 0x20
378 #define EXCA_CIRRUS_CHIP_INFO_REV 0x1F
379
380 #define EXCA_CIRRUS_EXTENDED_INDEX 0x2E
381 #define EXCA_CIRRUS_EXTENDED_DATA 0x2F
382 #define EXCA_CIRRUS_EXT_CONTROL_1 0x03
383 #define EXCA_CIRRUS_EXT_CONTROL_1_PCI_INTR_MASK 0x18
384
385 /* Plug and play */
386 #define EXCA_PNP_ACTIONTEC 0x1802A904 /* AEI0218 */
387 #define EXCA_PNP_IBM3765 0x65374d24 /* IBM3765 */
388 #define EXCA_PNP_82365 0x000ED041 /* PNP0E00 */
389 #define EXCA_PNP_CL_PD6720 0x010ED041 /* PNP0E01 */
390 #define EXCA_PNP_VLSI_82C146 0x020ED041 /* PNP0E02 */
391 #define EXCA_PNP_82365_CARDBUS 0x030ED041 /* PNP0E03 */
392 #define EXCA_PNP_SCM_SWAPBOX 0x69046d4c /* SMC0469 */
393
394 /* C-Bus PnP Definitions */
395 #define EXCA_NEC_PC9801_102 0x9180a3b8 /* NEC8091 PC-9801-102 */
396 #define EXCA_NEC_PC9821RA_E01 0x2181a3b8 /* NEC8121 PC-9821RA-E01 */
397
398 /*
399 * Mask of allowable interrupts.
400 *
401 * For IBM-AT machines, irqs 3, 4, 5, 7, 9, 10, 11, 12, 14, 15 are
402 * allowed. Nearly all IBM-AT machines with pcic cards or bridges
403 * wire these interrupts (or a subset thereof) to the corresponding
404 * pins on the ISA bus. Some older laptops are reported to not route
405 * all the interrupt pins to the bus because the designers knew that
406 * some would conflict with builtin devices. Older versions of Windows
407 * NT had a special device that would probe for conflicts early in the
408 * boot process and formulate a mapping table. Maybe we should do
409 * something similar.
410 *
411 * For NEC PC-98 machines, irq 3, 5, 6, 9, 10, 11, 12, 13 are allowed.
412 * These correspond to the C-BUS signals INT 0, 1, 2, 3, 41, 42, 5, 6
413 * respectively.
414 *
415 * Hiroshi TSUKADA-san writes in FreeBSD98-testers that CBUS INT 2
416 * (mapped to IRQ 6) is routed to the IRQ 7 pin of the pcic in pc98
417 * cbus add-in cards. He has confirmed this routing with a visual
418 * inspection of his card or a VOM.
419 */
420 #ifdef PC98
421 #define EXCA_INT_MASK_ALLOWED 0x3E68 /* PC98 */
422 #else
423 #define EXCA_INT_MASK_ALLOWED 0xDEB8 /* AT */
424 #endif
425
426 #endif /* !_SYS_DEV_EXCA_EXCAREG_H */
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