1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ALPHA_APECS__H__
3 #define __ALPHA_APECS__H__
4 
5 #include <linux/types.h>
6 #include <asm/compiler.h>
7 
8 /*
9  * APECS is the internal name for the 2107x chipset which provides
10  * memory controller and PCI access for the 21064 chip based systems.
11  *
12  * This file is based on:
13  *
14  * DECchip 21071-AA and DECchip 21072-AA Core Logic Chipsets
15  * Data Sheet
16  *
17  * EC-N0648-72
18  *
19  *
20  * david.rusling@reo.mts.dec.com Initial Version.
21  *
22  */
23 
24 /*
25    An AVANTI *might* be an XL, and an XL has only 27 bits of ISA address
26    that get passed through the PCI<->ISA bridge chip. So we've gotta use
27    both windows to max out the physical memory we can DMA to. Sigh...
28 
29    If we try a window at 0 for 1GB as a work-around, we run into conflicts
30    with ISA/PCI bus memory which can't be relocated, like VGA aperture and
31    BIOS ROMs. So we must put the windows high enough to avoid these areas.
32 
33    We put window 1 at BUS 64Mb for 64Mb, mapping physical 0 to 64Mb-1,
34    and window 2 at BUS 1Gb for 1Gb, mapping physical 0 to 1Gb-1.
35    Yes, this does map 0 to 64Mb-1 twice, but only window 1 will actually
36    be used for that range (via virt_to_bus()).
37 
38    Note that we actually fudge the window 1 maximum as 48Mb instead of 64Mb,
39    to keep virt_to_bus() from returning an address in the first window, for
40    a data area that goes beyond the 64Mb first DMA window.  Sigh...
41    The fudge factor MUST match with <asm/dma.h> MAX_DMA_ADDRESS, but
42    we can't just use that here, because of header file looping... :-(
43 
44    Window 1 will be used for all DMA from the ISA bus; yes, that does
45    limit what memory an ISA floppy or sound card or Ethernet can touch, but
46    it's also a known limitation on other platforms as well. We use the
47    same technique that is used on INTEL platforms with similar limitation:
48    set MAX_DMA_ADDRESS and clear some pages' DMAable flags during mem_init().
49    We trust that any ISA bus device drivers will *always* ask for DMAable
50    memory explicitly via kmalloc()/get_free_pages() flags arguments.
51 
52    Note that most PCI bus devices' drivers do *not* explicitly ask for
53    DMAable memory; they count on being able to DMA to any memory they
54    get from kmalloc()/get_free_pages(). They will also use window 1 for
55    any physical memory accesses below 64Mb; the rest will be handled by
56    window 2, maxing out at 1Gb of memory. I trust this is enough... :-)
57 
58    We hope that the area before the first window is large enough so that
59    there will be no overlap at the top end (64Mb). We *must* locate the
60    PCI cards' memory just below window 1, so that there's still the
61    possibility of being able to access it via SPARSE space. This is
62    important for cards such as the Matrox Millennium, whose Xserver
63    wants to access memory-mapped registers in byte and short lengths.
64 
65    Note that the XL is treated differently from the AVANTI, even though
66    for most other things they are identical. It didn't seem reasonable to
67    make the AVANTI support pay for the limitations of the XL. It is true,
68    however, that an XL kernel will run on an AVANTI without problems.
69 
70    %%% All of this should be obviated by the ability to route
71    everything through the iommu.
72 */
73 
74 /*
75  * 21071-DA Control and Status registers.
76  * These are used for PCI memory access.
77  */
78 #define APECS_IOC_DCSR                  (IDENT_ADDR + 0x1A0000000UL)
79 #define APECS_IOC_PEAR                  (IDENT_ADDR + 0x1A0000020UL)
80 #define APECS_IOC_SEAR                  (IDENT_ADDR + 0x1A0000040UL)
81 #define APECS_IOC_DR1                   (IDENT_ADDR + 0x1A0000060UL)
82 #define APECS_IOC_DR2                   (IDENT_ADDR + 0x1A0000080UL)
83 #define APECS_IOC_DR3                   (IDENT_ADDR + 0x1A00000A0UL)
84 
85 #define APECS_IOC_TB1R                  (IDENT_ADDR + 0x1A00000C0UL)
86 #define APECS_IOC_TB2R                  (IDENT_ADDR + 0x1A00000E0UL)
87 
88 #define APECS_IOC_PB1R                  (IDENT_ADDR + 0x1A0000100UL)
89 #define APECS_IOC_PB2R                  (IDENT_ADDR + 0x1A0000120UL)
90 
91 #define APECS_IOC_PM1R                  (IDENT_ADDR + 0x1A0000140UL)
92 #define APECS_IOC_PM2R                  (IDENT_ADDR + 0x1A0000160UL)
93 
94 #define APECS_IOC_HAXR0                 (IDENT_ADDR + 0x1A0000180UL)
95 #define APECS_IOC_HAXR1                 (IDENT_ADDR + 0x1A00001A0UL)
96 #define APECS_IOC_HAXR2                 (IDENT_ADDR + 0x1A00001C0UL)
97 
98 #define APECS_IOC_PMLT                  (IDENT_ADDR + 0x1A00001E0UL)
99 
100 #define APECS_IOC_TLBTAG0               (IDENT_ADDR + 0x1A0000200UL)
101 #define APECS_IOC_TLBTAG1               (IDENT_ADDR + 0x1A0000220UL)
102 #define APECS_IOC_TLBTAG2               (IDENT_ADDR + 0x1A0000240UL)
103 #define APECS_IOC_TLBTAG3               (IDENT_ADDR + 0x1A0000260UL)
104 #define APECS_IOC_TLBTAG4               (IDENT_ADDR + 0x1A0000280UL)
105 #define APECS_IOC_TLBTAG5               (IDENT_ADDR + 0x1A00002A0UL)
106 #define APECS_IOC_TLBTAG6               (IDENT_ADDR + 0x1A00002C0UL)
107 #define APECS_IOC_TLBTAG7               (IDENT_ADDR + 0x1A00002E0UL)
108 
109 #define APECS_IOC_TLBDATA0              (IDENT_ADDR + 0x1A0000300UL)
110 #define APECS_IOC_TLBDATA1              (IDENT_ADDR + 0x1A0000320UL)
111 #define APECS_IOC_TLBDATA2              (IDENT_ADDR + 0x1A0000340UL)
112 #define APECS_IOC_TLBDATA3              (IDENT_ADDR + 0x1A0000360UL)
113 #define APECS_IOC_TLBDATA4              (IDENT_ADDR + 0x1A0000380UL)
114 #define APECS_IOC_TLBDATA5              (IDENT_ADDR + 0x1A00003A0UL)
115 #define APECS_IOC_TLBDATA6              (IDENT_ADDR + 0x1A00003C0UL)
116 #define APECS_IOC_TLBDATA7              (IDENT_ADDR + 0x1A00003E0UL)
117 
118 #define APECS_IOC_TBIA                  (IDENT_ADDR + 0x1A0000400UL)
119 
120 
121 /*
122  * 21071-CA Control and Status registers.
123  * These are used to program memory timing,
124  *  configure memory and initialise the B-Cache.
125  */
126 #define APECS_MEM_GCR		        (IDENT_ADDR + 0x180000000UL)
127 #define APECS_MEM_EDSR		        (IDENT_ADDR + 0x180000040UL)
128 #define APECS_MEM_TAR  		        (IDENT_ADDR + 0x180000060UL)
129 #define APECS_MEM_ELAR		        (IDENT_ADDR + 0x180000080UL)
130 #define APECS_MEM_EHAR  		(IDENT_ADDR + 0x1800000a0UL)
131 #define APECS_MEM_SFT_RST		(IDENT_ADDR + 0x1800000c0UL)
132 #define APECS_MEM_LDxLAR 		(IDENT_ADDR + 0x1800000e0UL)
133 #define APECS_MEM_LDxHAR 		(IDENT_ADDR + 0x180000100UL)
134 #define APECS_MEM_GTR    		(IDENT_ADDR + 0x180000200UL)
135 #define APECS_MEM_RTR    		(IDENT_ADDR + 0x180000220UL)
136 #define APECS_MEM_VFPR   		(IDENT_ADDR + 0x180000240UL)
137 #define APECS_MEM_PDLDR  		(IDENT_ADDR + 0x180000260UL)
138 #define APECS_MEM_PDhDR  		(IDENT_ADDR + 0x180000280UL)
139 
140 /* Bank x Base Address Register */
141 #define APECS_MEM_B0BAR  		(IDENT_ADDR + 0x180000800UL)
142 #define APECS_MEM_B1BAR  		(IDENT_ADDR + 0x180000820UL)
143 #define APECS_MEM_B2BAR  		(IDENT_ADDR + 0x180000840UL)
144 #define APECS_MEM_B3BAR  		(IDENT_ADDR + 0x180000860UL)
145 #define APECS_MEM_B4BAR  		(IDENT_ADDR + 0x180000880UL)
146 #define APECS_MEM_B5BAR  		(IDENT_ADDR + 0x1800008A0UL)
147 #define APECS_MEM_B6BAR  		(IDENT_ADDR + 0x1800008C0UL)
148 #define APECS_MEM_B7BAR  		(IDENT_ADDR + 0x1800008E0UL)
149 #define APECS_MEM_B8BAR  		(IDENT_ADDR + 0x180000900UL)
150 
151 /* Bank x Configuration Register */
152 #define APECS_MEM_B0BCR  		(IDENT_ADDR + 0x180000A00UL)
153 #define APECS_MEM_B1BCR  		(IDENT_ADDR + 0x180000A20UL)
154 #define APECS_MEM_B2BCR  		(IDENT_ADDR + 0x180000A40UL)
155 #define APECS_MEM_B3BCR  		(IDENT_ADDR + 0x180000A60UL)
156 #define APECS_MEM_B4BCR  		(IDENT_ADDR + 0x180000A80UL)
157 #define APECS_MEM_B5BCR  		(IDENT_ADDR + 0x180000AA0UL)
158 #define APECS_MEM_B6BCR  		(IDENT_ADDR + 0x180000AC0UL)
159 #define APECS_MEM_B7BCR  		(IDENT_ADDR + 0x180000AE0UL)
160 #define APECS_MEM_B8BCR  		(IDENT_ADDR + 0x180000B00UL)
161 
162 /* Bank x Timing Register A */
163 #define APECS_MEM_B0TRA  		(IDENT_ADDR + 0x180000C00UL)
164 #define APECS_MEM_B1TRA  		(IDENT_ADDR + 0x180000C20UL)
165 #define APECS_MEM_B2TRA  		(IDENT_ADDR + 0x180000C40UL)
166 #define APECS_MEM_B3TRA  		(IDENT_ADDR + 0x180000C60UL)
167 #define APECS_MEM_B4TRA  		(IDENT_ADDR + 0x180000C80UL)
168 #define APECS_MEM_B5TRA  		(IDENT_ADDR + 0x180000CA0UL)
169 #define APECS_MEM_B6TRA  		(IDENT_ADDR + 0x180000CC0UL)
170 #define APECS_MEM_B7TRA  		(IDENT_ADDR + 0x180000CE0UL)
171 #define APECS_MEM_B8TRA  		(IDENT_ADDR + 0x180000D00UL)
172 
173 /* Bank x Timing Register B */
174 #define APECS_MEM_B0TRB                 (IDENT_ADDR + 0x180000E00UL)
175 #define APECS_MEM_B1TRB  		(IDENT_ADDR + 0x180000E20UL)
176 #define APECS_MEM_B2TRB  		(IDENT_ADDR + 0x180000E40UL)
177 #define APECS_MEM_B3TRB  		(IDENT_ADDR + 0x180000E60UL)
178 #define APECS_MEM_B4TRB  		(IDENT_ADDR + 0x180000E80UL)
179 #define APECS_MEM_B5TRB  		(IDENT_ADDR + 0x180000EA0UL)
180 #define APECS_MEM_B6TRB  		(IDENT_ADDR + 0x180000EC0UL)
181 #define APECS_MEM_B7TRB  		(IDENT_ADDR + 0x180000EE0UL)
182 #define APECS_MEM_B8TRB  		(IDENT_ADDR + 0x180000F00UL)
183 
184 
185 /*
186  * Memory spaces:
187  */
188 #define APECS_IACK_SC		        (IDENT_ADDR + 0x1b0000000UL)
189 #define APECS_CONF		        (IDENT_ADDR + 0x1e0000000UL)
190 #define APECS_IO			(IDENT_ADDR + 0x1c0000000UL)
191 #define APECS_SPARSE_MEM		(IDENT_ADDR + 0x200000000UL)
192 #define APECS_DENSE_MEM		        (IDENT_ADDR + 0x300000000UL)
193 
194 
195 /*
196  * Bit definitions for I/O Controller status register 0:
197  */
198 #define APECS_IOC_STAT0_CMD		0xf
199 #define APECS_IOC_STAT0_ERR		(1<<4)
200 #define APECS_IOC_STAT0_LOST		(1<<5)
201 #define APECS_IOC_STAT0_THIT		(1<<6)
202 #define APECS_IOC_STAT0_TREF		(1<<7)
203 #define APECS_IOC_STAT0_CODE_SHIFT	8
204 #define APECS_IOC_STAT0_CODE_MASK	0x7
205 #define APECS_IOC_STAT0_P_NBR_SHIFT	13
206 #define APECS_IOC_STAT0_P_NBR_MASK	0x7ffff
207 
208 #define APECS_HAE_ADDRESS		APECS_IOC_HAXR1
209 
210 
211 /*
212  * Data structure for handling APECS machine checks:
213  */
214 
215 struct el_apecs_mikasa_sysdata_mcheck
216 {
217 	unsigned long coma_gcr;
218 	unsigned long coma_edsr;
219 	unsigned long coma_ter;
220 	unsigned long coma_elar;
221 	unsigned long coma_ehar;
222 	unsigned long coma_ldlr;
223 	unsigned long coma_ldhr;
224 	unsigned long coma_base0;
225 	unsigned long coma_base1;
226 	unsigned long coma_base2;
227 	unsigned long coma_base3;
228 	unsigned long coma_cnfg0;
229 	unsigned long coma_cnfg1;
230 	unsigned long coma_cnfg2;
231 	unsigned long coma_cnfg3;
232 	unsigned long epic_dcsr;
233 	unsigned long epic_pear;
234 	unsigned long epic_sear;
235 	unsigned long epic_tbr1;
236 	unsigned long epic_tbr2;
237 	unsigned long epic_pbr1;
238 	unsigned long epic_pbr2;
239 	unsigned long epic_pmr1;
240 	unsigned long epic_pmr2;
241 	unsigned long epic_harx1;
242 	unsigned long epic_harx2;
243 	unsigned long epic_pmlt;
244 	unsigned long epic_tag0;
245 	unsigned long epic_tag1;
246 	unsigned long epic_tag2;
247 	unsigned long epic_tag3;
248 	unsigned long epic_tag4;
249 	unsigned long epic_tag5;
250 	unsigned long epic_tag6;
251 	unsigned long epic_tag7;
252 	unsigned long epic_data0;
253 	unsigned long epic_data1;
254 	unsigned long epic_data2;
255 	unsigned long epic_data3;
256 	unsigned long epic_data4;
257 	unsigned long epic_data5;
258 	unsigned long epic_data6;
259 	unsigned long epic_data7;
260 
261 	unsigned long pceb_vid;
262 	unsigned long pceb_did;
263 	unsigned long pceb_revision;
264 	unsigned long pceb_command;
265 	unsigned long pceb_status;
266 	unsigned long pceb_latency;
267 	unsigned long pceb_control;
268 	unsigned long pceb_arbcon;
269 	unsigned long pceb_arbpri;
270 
271 	unsigned long esc_id;
272 	unsigned long esc_revision;
273 	unsigned long esc_int0;
274 	unsigned long esc_int1;
275 	unsigned long esc_elcr0;
276 	unsigned long esc_elcr1;
277 	unsigned long esc_last_eisa;
278 	unsigned long esc_nmi_stat;
279 
280 	unsigned long pci_ir;
281 	unsigned long pci_imr;
282 	unsigned long svr_mgr;
283 };
284 
285 /* This for the normal APECS machines.  */
286 struct el_apecs_sysdata_mcheck
287 {
288 	unsigned long coma_gcr;
289 	unsigned long coma_edsr;
290 	unsigned long coma_ter;
291 	unsigned long coma_elar;
292 	unsigned long coma_ehar;
293 	unsigned long coma_ldlr;
294 	unsigned long coma_ldhr;
295 	unsigned long coma_base0;
296 	unsigned long coma_base1;
297 	unsigned long coma_base2;
298 	unsigned long coma_cnfg0;
299 	unsigned long coma_cnfg1;
300 	unsigned long coma_cnfg2;
301 	unsigned long epic_dcsr;
302 	unsigned long epic_pear;
303 	unsigned long epic_sear;
304 	unsigned long epic_tbr1;
305 	unsigned long epic_tbr2;
306 	unsigned long epic_pbr1;
307 	unsigned long epic_pbr2;
308 	unsigned long epic_pmr1;
309 	unsigned long epic_pmr2;
310 	unsigned long epic_harx1;
311 	unsigned long epic_harx2;
312 	unsigned long epic_pmlt;
313 	unsigned long epic_tag0;
314 	unsigned long epic_tag1;
315 	unsigned long epic_tag2;
316 	unsigned long epic_tag3;
317 	unsigned long epic_tag4;
318 	unsigned long epic_tag5;
319 	unsigned long epic_tag6;
320 	unsigned long epic_tag7;
321 	unsigned long epic_data0;
322 	unsigned long epic_data1;
323 	unsigned long epic_data2;
324 	unsigned long epic_data3;
325 	unsigned long epic_data4;
326 	unsigned long epic_data5;
327 	unsigned long epic_data6;
328 	unsigned long epic_data7;
329 };
330 
331 struct el_apecs_procdata
332 {
333 	unsigned long paltemp[32];  /* PAL TEMP REGS. */
334 	/* EV4-specific fields */
335 	unsigned long exc_addr;     /* Address of excepting instruction. */
336 	unsigned long exc_sum;      /* Summary of arithmetic traps. */
337 	unsigned long exc_mask;     /* Exception mask (from exc_sum). */
338 	unsigned long iccsr;        /* IBox hardware enables. */
339 	unsigned long pal_base;     /* Base address for PALcode. */
340 	unsigned long hier;         /* Hardware Interrupt Enable. */
341 	unsigned long hirr;         /* Hardware Interrupt Request. */
342 	unsigned long csr;          /* D-stream fault info. */
343 	unsigned long dc_stat;      /* D-cache status (ECC/Parity Err). */
344 	unsigned long dc_addr;      /* EV3 Phys Addr for ECC/DPERR. */
345 	unsigned long abox_ctl;     /* ABox Control Register. */
346 	unsigned long biu_stat;     /* BIU Status. */
347 	unsigned long biu_addr;     /* BUI Address. */
348 	unsigned long biu_ctl;      /* BIU Control. */
349 	unsigned long fill_syndrome;/* For correcting ECC errors. */
350 	unsigned long fill_addr;    /* Cache block which was being read */
351 	unsigned long va;           /* Effective VA of fault or miss. */
352 	unsigned long bc_tag;       /* Backup Cache Tag Probe Results.*/
353 };
354 
355 
356 #ifdef __KERNEL__
357 
358 #ifndef __EXTERN_INLINE
359 #define __EXTERN_INLINE extern inline
360 #define __IO_EXTERN_INLINE
361 #endif
362 
363 /*
364  * I/O functions:
365  *
366  * Unlike Jensen, the APECS machines have no concept of local
367  * I/O---everything goes over the PCI bus.
368  *
369  * There is plenty room for optimization here.  In particular,
370  * the Alpha's insb/insw/extb/extw should be useful in moving
371  * data to/from the right byte-lanes.
372  */
373 
374 #define vip	volatile int __force *
375 #define vuip	volatile unsigned int __force *
376 #define vulp	volatile unsigned long __force *
377 
378 #define APECS_SET_HAE						\
379 	do {							\
380 		if (addr >= (1UL << 24)) {			\
381 			unsigned long msb = addr & 0xf8000000;	\
382 			addr -= msb;				\
383 			set_hae(msb);				\
384 		}						\
385 	} while (0)
386 
387 __EXTERN_INLINE unsigned int apecs_ioread8(const void __iomem *xaddr)
388 {
389 	unsigned long addr = (unsigned long) xaddr;
390 	unsigned long result, base_and_type;
391 
392 	if (addr >= APECS_DENSE_MEM) {
393 		addr -= APECS_DENSE_MEM;
394 		APECS_SET_HAE;
395 		base_and_type = APECS_SPARSE_MEM + 0x00;
396 	} else {
397 		addr -= APECS_IO;
398 		base_and_type = APECS_IO + 0x00;
399 	}
400 
401 	result = *(vip) ((addr << 5) + base_and_type);
402 	return __kernel_extbl(result, addr & 3);
403 }
404 
405 __EXTERN_INLINE void apecs_iowrite8(u8 b, void __iomem *xaddr)
406 {
407 	unsigned long addr = (unsigned long) xaddr;
408 	unsigned long w, base_and_type;
409 
410 	if (addr >= APECS_DENSE_MEM) {
411 		addr -= APECS_DENSE_MEM;
412 		APECS_SET_HAE;
413 		base_and_type = APECS_SPARSE_MEM + 0x00;
414 	} else {
415 		addr -= APECS_IO;
416 		base_and_type = APECS_IO + 0x00;
417 	}
418 
419 	w = __kernel_insbl(b, addr & 3);
420 	*(vuip) ((addr << 5) + base_and_type) = w;
421 }
422 
423 __EXTERN_INLINE unsigned int apecs_ioread16(const void __iomem *xaddr)
424 {
425 	unsigned long addr = (unsigned long) xaddr;
426 	unsigned long result, base_and_type;
427 
428 	if (addr >= APECS_DENSE_MEM) {
429 		addr -= APECS_DENSE_MEM;
430 		APECS_SET_HAE;
431 		base_and_type = APECS_SPARSE_MEM + 0x08;
432 	} else {
433 		addr -= APECS_IO;
434 		base_and_type = APECS_IO + 0x08;
435 	}
436 
437 	result = *(vip) ((addr << 5) + base_and_type);
438 	return __kernel_extwl(result, addr & 3);
439 }
440 
441 __EXTERN_INLINE void apecs_iowrite16(u16 b, void __iomem *xaddr)
442 {
443 	unsigned long addr = (unsigned long) xaddr;
444 	unsigned long w, base_and_type;
445 
446 	if (addr >= APECS_DENSE_MEM) {
447 		addr -= APECS_DENSE_MEM;
448 		APECS_SET_HAE;
449 		base_and_type = APECS_SPARSE_MEM + 0x08;
450 	} else {
451 		addr -= APECS_IO;
452 		base_and_type = APECS_IO + 0x08;
453 	}
454 
455 	w = __kernel_inswl(b, addr & 3);
456 	*(vuip) ((addr << 5) + base_and_type) = w;
457 }
458 
459 __EXTERN_INLINE unsigned int apecs_ioread32(const void __iomem *xaddr)
460 {
461 	unsigned long addr = (unsigned long) xaddr;
462 	if (addr < APECS_DENSE_MEM)
463 		addr = ((addr - APECS_IO) << 5) + APECS_IO + 0x18;
464 	return *(vuip)addr;
465 }
466 
467 __EXTERN_INLINE void apecs_iowrite32(u32 b, void __iomem *xaddr)
468 {
469 	unsigned long addr = (unsigned long) xaddr;
470 	if (addr < APECS_DENSE_MEM)
471 		addr = ((addr - APECS_IO) << 5) + APECS_IO + 0x18;
472 	*(vuip)addr = b;
473 }
474 
475 __EXTERN_INLINE void __iomem *apecs_ioportmap(unsigned long addr)
476 {
477 	return (void __iomem *)(addr + APECS_IO);
478 }
479 
480 __EXTERN_INLINE void __iomem *apecs_ioremap(unsigned long addr,
481 					    unsigned long size)
482 {
483 	return (void __iomem *)(addr + APECS_DENSE_MEM);
484 }
485 
486 __EXTERN_INLINE int apecs_is_ioaddr(unsigned long addr)
487 {
488 	return addr >= IDENT_ADDR + 0x180000000UL;
489 }
490 
491 __EXTERN_INLINE int apecs_is_mmio(const volatile void __iomem *addr)
492 {
493 	return (unsigned long)addr >= APECS_DENSE_MEM;
494 }
495 
496 #undef APECS_SET_HAE
497 
498 #undef vip
499 #undef vuip
500 #undef vulp
501 
502 #undef __IO_PREFIX
503 #define __IO_PREFIX		apecs
504 #define apecs_trivial_io_bw	0
505 #define apecs_trivial_io_lq	0
506 #define apecs_trivial_rw_bw	2
507 #define apecs_trivial_rw_lq	1
508 #define apecs_trivial_iounmap	1
509 #include <asm/io_trivial.h>
510 
511 #ifdef __IO_EXTERN_INLINE
512 #undef __EXTERN_INLINE
513 #undef __IO_EXTERN_INLINE
514 #endif
515 
516 #endif /* __KERNEL__ */
517 
518 #endif /* __ALPHA_APECS__H__ */
519