xref: /netbsd/sys/arch/alpha/pci/mcpciareg.h (revision b627dca8)
1 /* $NetBSD: mcpciareg.h,v 1.8 2012/02/06 02:14:14 matt Exp $ */
2 
3 /*
4  * Copyright (c) 1998 by Matthew Jacob
5  * NASA AMES Research Center.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice immediately at the beginning of the file, without modification,
13  *    this list of conditions, and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 /*
34  * Taken from:
35  *
36  *	``RAWHIDE Systems Programmer's Manual, Revision 1.4''
37  */
38 
39 #define	REGVAL(r)	(*(volatile int32_t *)ALPHA_PHYS_TO_K0SEG(r))
40 
41 /*
42  * There are 4 possible PCI busses per MCBUS.
43  *
44  * (from mcpcia.h, Digital Unix 4.0E):
45  *
46  * I/O Space Per PCI Node (8GBytes per)
47  * ------------------------------------
48  * (8+x)8 0000 0000 - (8+x)9 FFFF FFFF  - I/O Space for PCI0
49  * (8+x)A 0000 0000 - (8+x)B FFFF FFFF  - I/O Space for PCI1
50  * (8+x)C 0000 0000 - (8+x)D FFFF FFFF  - I/O Space for PCI2
51  * (8+x)E 0000 0000 - (8+x)F FFFF FFFF  - I/O Space for PCI3
52  *
53  * CPU to PCI Address Mapping:
54  * ---------------------------
55  *
56  * +---+-------+-------+--+--+--+--+--+--+---------------+----------+-----+
57  * | 1 |  GID  |  MID  |  |  |  |  |  |  | Byte Aligned  | Byte Len | Zero|
58  * |   |       |       |  |  |  |  |  |  | I/O Address   |   Field  |     |
59  * +---+-------+-------+--+--+--+--+--+--+---------------+----------+-----+
60  *  39  38   36 35   33 32 31 30 29 28 27 26            5 4        3  2  0
61  *
62  * <39> - I/O Select (Always 1 for direct I/O access)
63  *
64  * <38-36> - Global Bus slot # (MCBUS #)
65  *      GID slot #0->7 (MCBUS #0->7)
66  *
67  * <35-33> - MCBUS Slot #
68  *      MCBUS slot 0->7
69  *
70  * <32-27> - PCI Address Space
71  *      0.xxxxx = Sparse Memory Space   (  4GB on MCBUS; 128MB on PCI)
72  *      1.0xxxx = Dense Memory Space    (  2GB on MCBUS;   2GB on PCI)
73  *      1.10xxx = Sparse IO Space       (  1GB on MCBUS;  32MB on PCI)
74  *      1.110xx = Sparse Config Space   (512MB on MCBUS;  16MB on PCI)
75  *      1.1110x = PCI Bridge CSR Space  (256MB on MCBUS) -- Sparse-mapped!
76  *      1.11110 = Interrupt Acknowledge (128MB on MCBUS)
77  *      1.11111 = Unused                (128MB on MCBUS)
78  *
79  * ------------------------------------------------------------
80  * CPU to PCI Address Mapping for MCBUS-PCIy Bridge on MCBUS x:
81  * ------------------------------------------------------------
82  *
83  * CPU Address Range            PCI Address Range       PCI Address Space
84  * ------------------------     ---------------------   ------------------------
85  * (8+x)(8+y*2).0000.0000       0000.0000 - 00FF.FFFF   PCIy Sparse Memory Space
86  * - (8+x)(8+y*2).1FFF.FFFF                              (fixed, lower 16MB)
87  *
88  * (8+x)(8+y*2).2000.0000       0100.0000 - 07FF.FFFF   PCIy Sparse Memory Space
89  * - (8+x)(8+y*2).FFFF.FFFF                              (variable, offset = 0)
90  *
91  * (8+x)(9+y*2).0000.0000       0000.0000 - 7FFF.FFFF   PCIy Dense Memory Space
92  * - (8+x)(9+y*2).7FFF.FFFF  or 8000.0000 - FFFF.FFFF      if HAE_DENSE_MEM = 1
93  *
94  * (8+x)(9+y*2).8000.0000       0000.0000 - 0000.FFFF   PCIy Sparse IO Space
95  * - (8+x)(9+y*2).801F.FFFF                              (fixed, lower 64K)
96  *
97  * (8+x)(9+y*2).8020.0000       0001.0000 - 01FF.FFFF   PCIy Sparse IO Space
98  * - (8+x)(9+y*2).BFFF.FFFF                              (variable, offset = 0)
99  *
100  * (8+x)(9+y*2).C000.0000       0000.0000 - 0FFF.FFFF   PCIy Config Space (16MB)
101  * - (8+x)(9+y*2).DFFF.FFFF
102  *
103  * (8+x)(9+y*2).E000.0000               N/A             PCIy-Bridge CSR Space
104  *							(8MB)
105  * - (8+x)(9+y*2).EFFF.FFFF
106  *
107  * (8+x)(9+y*2).F000.0000               N/A             Unused
108  * - (8+x)(9+y*2).F000.3EFF
109  *
110  * (8+x)(9+y*2).F000.3F00,              N/A             PCIy Interrupt ACK0
111  * (8+x)(9+y*2).F000.3F40                               PCIy INteruppt ACK1
112  *
113  * (8+x)(9+y*2).F000.3F80               N/A             Unused
114  * - (8+x)(9+y*2).FFFF.FFFF
115  *
116  */
117 
118 /*
119  * MC-PCI Bus Bridge CSRs
120  *
121  * Address Map Overview:
122  *
123  * Offset                Selected Space
124  * ----------------      -------------------------------------------------
125  * 0x00000000            General config, control, diag, error logging regs.
126  * 0x00001000            PCI Error Status
127  * 0x00001300            PCI Scatter/Gather Regs.
128  * 0x00001800            Scatter/Gather TLB Regs.
129  * 0x00004000            MDPA Error Status & Diagnostic Control
130  * 0x00008000            MDPB Error Status & Diagnostic Control
131  * 0x000E0000 -          Flash Rom Space --
132  * 0x000FFFFF            offset address into PCI Dense Mem Space
133  * 0x10003F00            Interrupt Acknowledge
134  *
135  */
136 
137 
138 /*
139  * Address Space Cookies
140  */
141 
142 #define	MCPCIA_PCI_SPARSE	0x000000000UL
143 #define	MCPCIA_PCI_DENSE	0x100000000UL
144 #define	MCPCIA_PCI_IOSPACE	0x180000000UL
145 #define	MCPCIA_PCI_CONF		0x1C0000000UL
146 #define	MCPCIA_PCI_BRIDGE	0x1E0000000UL
147 #define	MCPCIA_PCI_IACK		0x1F0000000UL
148 
149 /*
150  * MCPCIA Bus Bridge Registers
151  *
152  * These are offsets that don't include GBUS, MID, or address space offsets.
153  */
154 
155 #define	_MCPCIA_PCI_REV		0x000000000	/* PCI Revision Register (R) */
156 #define	_MCPCIA_WHOAMI		0x000000040	/* PCI Who Am I (R) */
157 #define	_MCPCIA_PCI_LAT		0x000000080	/* PCI Latency Timer (RW) */
158 #define	_MCPCIA_CAP_CTRL	0x000000100	/* PCI Bridge Control (RW) */
159 #define	_MCPCIA_HAE_MEM		0x000000400	/* PCI HAE Sparse Memory (RW) */
160 #define	_MCPCIA_HAE_IO		0x000000440	/* PCI HAE Sparse I/O (RW) */
161 #define	_MCPCIA_IACK_SC		0x000000480	/* PCI Special Cycle Ack */
162 #define	_MCPCIA_HAE_DENSE	0x0000004C0	/* PCI HAE Dense Memory (RW) */
163 
164 #define	_MCPCIA_INT_CTL		0x000000500	/* PCI Interrupt Control */
165 #define	_MCPCIA_INT_REQ		0x000000540	/* PCI Interrupt Request */
166 #define	_MCPCIA_INT_TARG	0x000000580	/* PCI Int Tgt Devices */
167 #define	_MCPCIA_INT_ADR		0x0000005C0	/* PCI Int Tgt Address */
168 #define	_MCPCIA_INT_ADR_EXT	0x000000600	/* PCI Int Tgt Addr Ext */
169 #define	_MCPCIA_INT_MASK0	0x000000640	/* PCI Int Mask 0 */
170 #define	_MCPCIA_INT_MASK1	0x000000680	/* PCI Int Mask 1 */
171 
172 #define	_MCPCIA_INT_ACK0	0x100003F00	/* PCI Int Ack 0 */
173 #define	_MCPCIA_INT_ACK1	0x100003F40	/* PCI Int Ack 1 */
174 
175 #define	_MCPCIA_PERF_MON	0x000000300	/* PCI Perf Monitor */
176 #define	_MCPCIA_PERF_CONT	0x000000340	/* PCI Perf Monitor Control */
177 
178 #define	_MCPCIA_CAP_DIAG	0x000000700	/* MC-PCI Diagnostic Control */
179 #define	_MCPCIA_SCRATCH0	0x000000740	/* Diag General */
180 #define	_MCPCIA_SCRATCH1	0x000000780	/* Diag General */
181 #define	_MCPCIA_TOM		0x0000007C0	/* Top Of Memory */
182 #define	_MCPCIA_MC_ERR0		0x000000800	/* MC Err Info 0 */
183 #define	_MCPCIA_MC_ERR1		0x000000840	/* MC Err Info 1 */
184 #define	_MCPCIA_CAP_ERR		0x000000880	/* CAP Error Register */
185 
186 #define	_MCPCIA_PCI_ERR1	0x000001040	/* PCI Error Status */
187 
188 #define	_MCPCIA_MDPA_STAT	0x000004000	/* MDPA Status */
189 #define	_MCPCIA_MDPA_SYN	0x000004040	/* MDPA Syndrome */
190 #define	_MCPCIA_MDPA_DIAG	0x000004080	/* Diag Check MDPA */
191 
192 #define	_MCPCIA_MDPB_STAT	0x000008000	/* MDPB Status */
193 #define	_MCPCIA_MDPB_SYN	0x000008040	/* MDPB Syndrome */
194 #define	_MCPCIA_MDPB_DIAG	0x000008080	/* Diag Check MDPB */
195 
196 #define	_MCPCIA_SG_TBIA		0x000001300	/* Scatter/Gather TBIA */
197 #define	_MCPCIA_HBASE		0x000001340	/* PC "Hole" Compatibility */
198 #define	_MCPCIA_W0_BASE		0x000001400	/* Window Base 0 */
199 #define	_MCPCIA_W0_MASK		0x000001440	/* Window Mask 0 */
200 #define	_MCPCIA_T0_BASE		0x000001480	/* Translated Base 0 */
201 #define	_MCPCIA_W1_BASE		0x000001500	/* Window Base 1 */
202 #define	_MCPCIA_W1_MASK		0x000001540	/* Window Mask 1 */
203 #define	_MCPCIA_T1_BASE		0x000001580	/* Translated Base 1 */
204 #define	_MCPCIA_W2_BASE		0x000001600	/* Window Base 2 */
205 #define	_MCPCIA_W2_MASK		0x000001640	/* Window Mask 2 */
206 #define	_MCPCIA_T2_BASE		0x000001680	/* Translated Base 2 */
207 #define	_MCPCIA_W3_BASE		0x000001700	/* Window Base 3 */
208 #define	_MCPCIA_W3_MASK		0x000001740	/* Window Mask 3 */
209 #define	_MCPCIA_T3_BASE		0x000001780	/* Translated Base 3 */
210 #define	_MCPCIA_W_DAC		0x0000017C0	/* Window DAC Base */
211 
212 
213 /*
214  * Handier defines- uses precalculated offset in softc.
215  */
216 #define	_SYBRIDGE(ccp)	((ccp)->cc_sysbase | MCPCIA_PCI_BRIDGE)
217 
218 #define	MCPCIA_PCI_REV(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_PCI_REV)
219 #define	MCPCIA_WHOAMI(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_WHOAMI)
220 #define	MCPCIA_PCI_LAT(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_PCI_LAT)
221 #define	MCPCIA_CAP_CTRL(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_CAP_CTRL)
222 #define	MCPCIA_HAE_MEM(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_HAE_MEM)
223 #define	MCPCIA_HAE_IO(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_HAE_IO)
224 #define	MCPCIA_IACK_SC(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_IACK_SC)
225 #define	MCPCIA_HAE_DENSE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_HAE_DENSE)
226 #define	MCPCIA_INT_CTL(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_CTL)
227 #define	MCPCIA_INT_REQ(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_REQ)
228 #define	MCPCIA_INT_TARG(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_TARG)
229 #define	MCPCIA_INT_ADR(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_ADR)
230 #define	MCPCIA_INT_ADR_EXT(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_ADR_EXT)
231 #define	MCPCIA_INT_MASK0(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_MASK0)
232 #define	MCPCIA_INT_MASK1(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_MASK1)
233 #define	MCPCIA_INT_ACK0(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_ACK0)
234 #define	MCPCIA_INT_ACK1(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_INT_ACK1)
235 #define	MCPCIA_PERF_MON(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_PERF_MON)
236 #define	MCPCIA_PERF_CONT(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_PERF_CONT)
237 #define	MCPCIA_CAP_DIAG(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_CAP_DIAG)
238 #define	MCPCIA_SCRATCH0(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_SCRATCH0)
239 #define	MCPCIA_SCRATCH1(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_SCRATCH1)
240 #define	MCPCIA_TOM(ccp)		(_SYBRIDGE(ccp) | _MCPCIA_TOM)
241 #define	MCPCIA_MC_ERR0(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MC_ERR0)
242 #define	MCPCIA_MC_ERR1(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MC_ERR1)
243 #define	MCPCIA_CAP_ERR(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_CAP_ERR)
244 #define	MCPCIA_PCI_ERR1(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_PCI_ERR1)
245 #define	MCPCIA_MDPA_STAT(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MDPA_STAT)
246 #define	MCPCIA_MDPA_SYN(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MDPA_SYN)
247 #define	MCPCIA_MDPA_DIAG(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MDPA_DIAG)
248 #define	MCPCIA_MDPB_STAT(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MDPB_STAT)
249 #define	MCPCIA_MDPB_SYN(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MDPB_SYN)
250 #define	MCPCIA_MDPB_DIAG(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_MDPB_DIAG)
251 #define	MCPCIA_SG_TBIA(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_SG_TBIA)
252 #define	MCPCIA_HBASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_HBASE)
253 #define	MCPCIA_W0_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W0_BASE)
254 #define	MCPCIA_W0_MASK(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W0_MASK)
255 #define	MCPCIA_T0_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_T0_BASE)
256 #define	MCPCIA_W1_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W1_BASE)
257 #define	MCPCIA_W1_MASK(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W1_MASK)
258 #define	MCPCIA_T1_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_T1_BASE)
259 #define	MCPCIA_W2_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W2_BASE)
260 #define	MCPCIA_W2_MASK(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W2_MASK)
261 #define	MCPCIA_T2_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_T2_BASE)
262 #define	MCPCIA_W3_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W3_BASE)
263 #define	MCPCIA_W3_MASK(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W3_MASK)
264 #define	MCPCIA_T3_BASE(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_T3_BASE)
265 #define	MCPCIA_W_DAC(ccp)	(_SYBRIDGE(ccp) | _MCPCIA_W_DAC)
266 
267 /*
268  * This is here for what error handling will get as a collected subpacket.
269  */
270 
271 struct mcpcia_iodsnap {
272 	uint64_t	base_addr;
273 	uint32_t	whami;
274 	uint32_t	rsvd0;
275 	uint32_t	pci_rev;
276 	uint32_t	cap_ctrl;
277 	uint32_t	hae_mem;
278 	uint32_t	hae_io;
279 	uint32_t	int_ctl;
280 	uint32_t	int_reg;
281 	uint32_t	int_mask0;
282 	uint32_t	int_mask1;
283 	uint32_t	mc_err0;
284 	uint32_t	mc_err1;
285 	uint32_t	cap_err;
286 	uint32_t	sys_env;
287 	uint32_t	pci_err1;
288 	uint32_t	mdpa_stat;
289 	uint32_t	mdpa_syn;
290 	uint32_t	mdpb_stat;
291 	uint32_t	mdpb_syn;
292 	uint32_t	rsvd2;
293 	uint32_t	rsvd3;
294 	uint32_t	rsvd4;
295 };
296 
297 /*
298  * PCI_REV Register definitions
299  */
300 #define	CAP_REV(reg)		((reg) & 0xf)
301 #define	HORSE_REV(reg)		(((reg) >> 4) & 0xf)
302 #define	SADDLE_REV(reg)		(((reg) >> 8) & 0xf)
303 #define	SADDLE_TYPE(reg)	(((reg) >> 12) & 0x3)
304 #define	EISA_PRESENT(reg)	((reg) & (1 << 15))
305 #define	IS_MCPCIA_MAGIC(reg)	(((reg) & 0xffff0000) == 0x6000000)
306 
307 
308 /*
309  * WHOAMI Register definitions
310  *
311  * The Device ID is an echo of the MID of the CPU reading this register-
312  * cheezy way to figure out who you are (ask someone else!).
313  */
314 #define	MCBUS_CPU_MID(x)		((x) & 0x7)
315 #define	MCBUS_CPU_INFO(x)		(((x) >> 6) & 0xff)
316 #define		CPU_Fill_Err	0x80
317 #define		CPU_DTAG_Perr	0x40
318 #define		CPU_RevMask	0x38
319 #define		CPU_RevShift	3
320 #define		CPU_BCacheMask	0x3
321 #define			CPU_BCache_0MB	0
322 #define			CPU_BCache_1MB	1
323 #define			CPU_BCache_2MB	2
324 #define			CPU_BCache_4MB	3
325 
326 /*
327  * PCI Latency Register Definitions
328  */
329 #define	PCI_LAT_SHIFT	8	/* it's in the 2nd byte. */
330 
331 /*
332  * CAP Control Register Definitions
333  */
334 #define	CAP_LED_ON	0x00000001	/* Selftest LED passed */
335 #define	CAP_EV56_BW_EN	0x00000002	/* BW Enables (EV56, EV6 only) */
336 #define	CAP_DLY_RD_EN	0x00000010	/* PCI Delayed Reads Enabled */
337 #define	CAP_MEM_EN	0x00000020	/* Respond to PCI transactions */
338 #define	CAP_REQ64_EN	0x00000040	/* Request 64 bit data transactions */
339 #define	CAP_ACK64_EN	0x00000080	/* Respond to 64 bit data "" */
340 #define	CAP_ADR_PAR_EN	0x00000100	/* Check PCI address Parity */
341 #define	CAP_MC_CA_PAR	0x00000200	/* Check MC bus CMD/Address Parity */
342 #define	CAP_MC_NXM_EN	0x00000400	/* Check for MC NXM */
343 #define	CAP_BUS_MON	0x00000800	/* Check for PCI errs (as bystander) */
344 /* bits 19:16 control number of pending write transactions */
345 #define		SHORT	0
346 #define		MED	1
347 #define		LONG	2
348 #define	CAP_MEMRD_PREFETCH_SHIFT	20
349 #define	CAP_MEMRDLN_PREFETCH_SHIFT	22
350 #define	CAP_MEMRDMULT_PREFETCH_SHIFT	24
351 #define	CAP_PARTIAL_WRITE	(1 << 26)
352 
353 #define	CAP_ARB_BPRI	0x00000000	/* Bridge Priority Arb */
354 #define	CAP_ARB_RROBIN	0x40000000	/* "" Round Robin */
355 #define	CAP_ARB_RROBIN1	0x80000000	/* "" Round Robin #1 */
356 
357 /*
358  * Diagnostic Register Bits
359  */
360 /* CAP_DIAG register */
361 #define	CAP_DIAG_PCIRESET	0x1	/*
362 					 * WriteOnly. Assert 1 for 100usec min.,
363 					 * then write zero. NOTE: deadlocks
364 					 * exist in h/w if anything but this
365 					 * register is accessed while reset
366 					 * is asserted.
367 					 */
368 #define	CAP_DIAG_MC_ADRPE	(1<<30)	/* Invert MC Bus Address/Parity */
369 #define	CAP_DIAG_PCI_ADRPE	(1<<31)	/* Force bad PCI parity (low 32) */
370 
371 /* MDPA_DIAG or MDPB_DIAG registers */
372 #define	MDPX_ECC_ENA		(1<<28)	/* Enable ECC on MC Bus (default 1) */
373 #define	MDPX_PAR_ENA		(1<<29)	/* Enable Parity on PCI (default 0) */
374 #define	MDPX_DIAG_FPE_PCI	(1<<30)	/* Force PCI parity error */
375 #define	MDPX_DIAG_USE_CHK	(1<<31)	/*
376 					 * When set, DMA write cycles use the
377 					 * value in the low 8 bits of this
378 					 * register (MDPA or MDPB) as ECC
379 					 * sent onto main memory.
380 					 */
381 
382 /*
383  * Interrupt Specific bits...
384  *
385  * Mostly we don't have to mess with any of the interrupt specific registers
386  * as the SRM has set most of this pretty complex stuff up for us.
387  *
388  * However, to enable specific interrupts, we need to set some bits
389  * in imask0 if we want to have them vectored to PALcode for appropriate
390  * dispatch.
391  */
392 
393 /*
394  * bits 0-15 correspond to 4 slots (time 4 buspins) for each PCI bus.
395  * bit 16 is the NCR810 onboard SCSI interrupt.
396  * bits 19-20 are reserved.
397  */
398 
399 #define	MCPCIA_I2C_CTRL_INTR		(1<<17)
400 #define	MCPCIA_I2C_CTRL_BUS_ERR		(1<<18)
401 
402 #define	MCPCIA_8259_NMI_INTR		(1<<21)
403 #define	MCPCIA_SOFT_ERR_INTR		(1<<22)
404 #define	MCPCIA_HARD_ERR_INTR		(1<<23)
405 
406 #ifdef	YET
407 #define	MCPCIA_GEN_IENABL	\
408 	(MCPCIA_I2C_CTRL_BUS_ERR|MCPCIA_SOFT_ERR_INTR|MCPCIA_HARD_ERR_INTR)
409 #else
410 #define	MCPCIA_GEN_IENABL	\
411 	(MCPCIA_SOFT_ERR_INTR|MCPCIA_HARD_ERR_INTR)
412 #endif
413 
414 /*
415  * DMA Address Specific bits...
416  */
417 
418 #define	MCPCIA_WBASE_EN			0x1
419 #define	MCPCIA_WBASE_SG			0x2
420 #define	MCPCIA_WBASE_DAC		0x8
421 #define	MCPCIA_WBASE_BSHIFT		20
422 
423 #define	MCPCIA_WMASK_1M			0x00000000
424 #define	MCPCIA_WMASK_2M			0x00100000
425 #define	MCPCIA_WMASK_4M			0x00300000
426 #define	MCPCIA_WMASK_8M			0x00700000
427 #define	MCPCIA_WMASK_16M		0x00f00000
428 #define	MCPCIA_WMASK_32M		0x01f00000
429 #define	MCPCIA_WMASK_64M		0x03f00000
430 #define	MCPCIA_WMASK_128M		0x07f00000
431 #define	MCPCIA_WMASK_256M		0x0ff00000
432 #define	MCPCIA_WMASK_512M		0x1ff00000
433 #define	MCPCIA_WMASK_1G			0x3ff00000
434 #define	MCPCIA_WMASK_2G			0x7ff00000
435 #define	MCPCIA_WMASK_4G			0xfff00000
436 
437 /*
438  * The WBASEX register contains bits 39:10 of a physical address
439  * shifted to bits 31:2 of this 32 bit register. Namely, shifted
440  * right by 8 bits.
441  */
442 #define	MCPCIA_TBASEX_SHIFT		8
443