File: /usr/src/linux/include/asm-alpha/core_t2.h

1     #ifndef __ALPHA_T2__H__
2     #define __ALPHA_T2__H__
3     
4     #include <linux/config.h>
5     #include <linux/types.h>
6     #include <asm/compiler.h>
7     
8     
9     /*
10      * T2 is the internal name for the core logic chipset which provides
11      * memory controller and PCI access for the SABLE-based systems.
12      *
13      * This file is based on:
14      *
15      * SABLE I/O Specification
16      * Revision/Update Information: 1.3
17      *
18      * jestabro@amt.tay1.dec.com Initial Version.
19      *
20      */
21     
22     #define T2_MEM_R1_MASK 0x03ffffff  /* Mem sparse region 1 mask is 26 bits */
23     
24     /* GAMMA-SABLE is a SABLE with EV5-based CPUs */
25     #define _GAMMA_BIAS		0x8000000000UL
26     
27     #if defined(CONFIG_ALPHA_GENERIC)
28     #define GAMMA_BIAS		alpha_mv.sys.t2.gamma_bias
29     #elif defined(CONFIG_ALPHA_GAMMA)
30     #define GAMMA_BIAS		_GAMMA_BIAS
31     #else
32     #define GAMMA_BIAS		0
33     #endif
34     
35     /*
36      * Memory spaces:
37      */
38     #define T2_CONF		        (IDENT_ADDR + GAMMA_BIAS + 0x390000000UL)
39     #define T2_IO			(IDENT_ADDR + GAMMA_BIAS + 0x3a0000000UL)
40     #define T2_SPARSE_MEM		(IDENT_ADDR + GAMMA_BIAS + 0x200000000UL)
41     #define T2_DENSE_MEM	        (IDENT_ADDR + GAMMA_BIAS + 0x3c0000000UL)
42     
43     #define T2_IOCSR		(IDENT_ADDR + GAMMA_BIAS + 0x38e000000UL)
44     #define T2_CERR1		(IDENT_ADDR + GAMMA_BIAS + 0x38e000020UL)
45     #define T2_CERR2		(IDENT_ADDR + GAMMA_BIAS + 0x38e000040UL)
46     #define T2_CERR3		(IDENT_ADDR + GAMMA_BIAS + 0x38e000060UL)
47     #define T2_PERR1		(IDENT_ADDR + GAMMA_BIAS + 0x38e000080UL)
48     #define T2_PERR2		(IDENT_ADDR + GAMMA_BIAS + 0x38e0000a0UL)
49     #define T2_PSCR			(IDENT_ADDR + GAMMA_BIAS + 0x38e0000c0UL)
50     #define T2_HAE_1		(IDENT_ADDR + GAMMA_BIAS + 0x38e0000e0UL)
51     #define T2_HAE_2		(IDENT_ADDR + GAMMA_BIAS + 0x38e000100UL)
52     #define T2_HBASE		(IDENT_ADDR + GAMMA_BIAS + 0x38e000120UL)
53     #define T2_WBASE1		(IDENT_ADDR + GAMMA_BIAS + 0x38e000140UL)
54     #define T2_WMASK1		(IDENT_ADDR + GAMMA_BIAS + 0x38e000160UL)
55     #define T2_TBASE1		(IDENT_ADDR + GAMMA_BIAS + 0x38e000180UL)
56     #define T2_WBASE2		(IDENT_ADDR + GAMMA_BIAS + 0x38e0001a0UL)
57     #define T2_WMASK2		(IDENT_ADDR + GAMMA_BIAS + 0x38e0001c0UL)
58     #define T2_TBASE2		(IDENT_ADDR + GAMMA_BIAS + 0x38e0001e0UL)
59     #define T2_TLBBR		(IDENT_ADDR + GAMMA_BIAS + 0x38e000200UL)
60     
61     #define T2_HAE_3		(IDENT_ADDR + GAMMA_BIAS + 0x38e000240UL)
62     #define T2_HAE_4		(IDENT_ADDR + GAMMA_BIAS + 0x38e000260UL)
63     
64     #define T2_HAE_ADDRESS		T2_HAE_1
65     
66     /*  T2 CSRs are in the non-cachable primary IO space from 3.8000.0000 to
67      3.8fff.ffff
68      *
69      *  +--------------+ 3 8000 0000
70      *  | CPU 0 CSRs   |
71      *  +--------------+ 3 8100 0000
72      *  | CPU 1 CSRs   |
73      *  +--------------+ 3 8200 0000
74      *  | CPU 2 CSRs   |
75      *  +--------------+ 3 8300 0000
76      *  | CPU 3 CSRs   |
77      *  +--------------+ 3 8400 0000
78      *  | CPU Reserved |
79      *  +--------------+ 3 8700 0000
80      *  | Mem Reserved |
81      *  +--------------+ 3 8800 0000
82      *  | Mem 0 CSRs   |
83      *  +--------------+ 3 8900 0000
84      *  | Mem 1 CSRs   |
85      *  +--------------+ 3 8a00 0000
86      *  | Mem 2 CSRs   |
87      *  +--------------+ 3 8b00 0000
88      *  | Mem 3 CSRs   |
89      *  +--------------+ 3 8c00 0000
90      *  | Mem Reserved |
91      *  +--------------+ 3 8e00 0000
92      *  | PCI Bridge   |
93      *  +--------------+ 3 8f00 0000
94      *  | Expansion IO |
95      *  +--------------+ 3 9000 0000
96      *
97      *
98      */
99     #define T2_CPU0_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x380000000L)
100     #define T2_CPU1_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x381000000L)
101     #define T2_CPU2_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x382000000L)
102     #define T2_CPU3_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x383000000L)
103     #define T2_MEM0_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x388000000L)
104     #define T2_MEM1_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x389000000L)
105     #define T2_MEM2_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x38a000000L)
106     #define T2_MEM3_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x38b000000L)
107     
108     
109     /*
110      * Sable CPU Module CSRS
111      *
112      * These are CSRs for hardware other than the CPU chip on the CPU module.
113      * The CPU module has Backup Cache control logic, Cbus control logic, and
114      * interrupt control logic on it.  There is a duplicate tag store to speed
115      * up maintaining cache coherency.
116      */
117     
118     struct sable_cpu_csr {
119       unsigned long bcc;     long fill_00[3]; /* Backup Cache Control */
120       unsigned long bcce;    long fill_01[3]; /* Backup Cache Correctable Error */
121       unsigned long bccea;   long fill_02[3]; /* B-Cache Corr Err Address Latch */
122       unsigned long bcue;    long fill_03[3]; /* B-Cache Uncorrectable Error */
123       unsigned long bcuea;   long fill_04[3]; /* B-Cache Uncorr Err Addr Latch */
124       unsigned long dter;    long fill_05[3]; /* Duplicate Tag Error */
125       unsigned long cbctl;   long fill_06[3]; /* CBus Control */
126       unsigned long cbe;     long fill_07[3]; /* CBus Error */
127       unsigned long cbeal;   long fill_08[3]; /* CBus Error Addr Latch low */
128       unsigned long cbeah;   long fill_09[3]; /* CBus Error Addr Latch high */
129       unsigned long pmbx;    long fill_10[3]; /* Processor Mailbox */
130       unsigned long ipir;    long fill_11[3]; /* Inter-Processor Int Request */
131       unsigned long sic;     long fill_12[3]; /* System Interrupt Clear */
132       unsigned long adlk;    long fill_13[3]; /* Address Lock (LDxL/STxC) */
133       unsigned long madrl;   long fill_14[3]; /* CBus Miss Address */
134       unsigned long rev;     long fill_15[3]; /* CMIC Revision */
135     };
136     
137     /*
138      * Data structure for handling T2 machine checks:
139      */
140     struct el_t2_frame_header {
141     	unsigned int	elcf_fid;	/* Frame ID (from above) */
142     	unsigned int	elcf_size;	/* Size of frame in bytes */
143     };
144     
145     struct el_t2_procdata_mcheck {
146     	unsigned long	elfmc_paltemp[32];	/* PAL TEMP REGS. */
147     	/* EV4-specific fields */
148     	unsigned long	elfmc_exc_addr;	/* Addr of excepting insn. */
149     	unsigned long	elfmc_exc_sum;	/* Summary of arith traps. */
150     	unsigned long	elfmc_exc_mask;	/* Exception mask (from exc_sum). */
151     	unsigned long	elfmc_iccsr;	/* IBox hardware enables. */
152     	unsigned long	elfmc_pal_base;	/* Base address for PALcode. */
153     	unsigned long	elfmc_hier;	/* Hardware Interrupt Enable. */
154     	unsigned long	elfmc_hirr;	/* Hardware Interrupt Request. */
155     	unsigned long	elfmc_mm_csr;	/* D-stream fault info. */
156     	unsigned long	elfmc_dc_stat;	/* D-cache status (ECC/Parity Err). */
157     	unsigned long	elfmc_dc_addr;	/* EV3 Phys Addr for ECC/DPERR. */
158     	unsigned long	elfmc_abox_ctl;	/* ABox Control Register. */
159     	unsigned long	elfmc_biu_stat;	/* BIU Status. */
160     	unsigned long	elfmc_biu_addr;	/* BUI Address. */
161     	unsigned long	elfmc_biu_ctl;	/* BIU Control. */
162     	unsigned long	elfmc_fill_syndrome; /* For correcting ECC errors. */
163     	unsigned long	elfmc_fill_addr;/* Cache block which was being read. */
164     	unsigned long	elfmc_va;	/* Effective VA of fault or miss. */
165     	unsigned long	elfmc_bc_tag;	/* Backup Cache Tag Probe Results. */
166     };
167     
168     /*
169      * Sable processor specific Machine Check Data segment.
170      */
171     
172     struct el_t2_logout_header {
173     	unsigned int	elfl_size;	/* size in bytes of logout area. */
174     	int		elfl_sbz1:31;	/* Should be zero. */
175     	char		elfl_retry:1;	/* Retry flag. */
176     	unsigned int	elfl_procoffset; /* Processor-specific offset. */
177     	unsigned int	elfl_sysoffset;	 /* Offset of system-specific. */
178     	unsigned int	elfl_error_type;	/* PAL error type code. */
179     	unsigned int	elfl_frame_rev;		/* PAL Frame revision. */
180     };
181     struct el_t2_sysdata_mcheck {
182     	unsigned long    elcmc_bcc;	      /* CSR 0 */
183     	unsigned long    elcmc_bcce;	      /* CSR 1 */
184     	unsigned long    elcmc_bccea;      /* CSR 2 */
185     	unsigned long    elcmc_bcue;	      /* CSR 3 */
186     	unsigned long    elcmc_bcuea;      /* CSR 4 */
187     	unsigned long    elcmc_dter;	      /* CSR 5 */
188     	unsigned long    elcmc_cbctl;      /* CSR 6 */
189     	unsigned long    elcmc_cbe;	      /* CSR 7 */
190     	unsigned long    elcmc_cbeal;      /* CSR 8 */
191     	unsigned long    elcmc_cbeah;      /* CSR 9 */
192     	unsigned long    elcmc_pmbx;	      /* CSR 10 */
193     	unsigned long    elcmc_ipir;	      /* CSR 11 */
194     	unsigned long    elcmc_sic;	      /* CSR 12 */
195     	unsigned long    elcmc_adlk;	      /* CSR 13 */
196     	unsigned long    elcmc_madrl;      /* CSR 14 */
197     	unsigned long    elcmc_crrev4;     /* CSR 15 */
198     };
199     
200     /*
201      * Sable memory error frame - sable pfms section 3.42
202      */
203     struct el_t2_data_memory {
204     	struct	el_t2_frame_header elcm_hdr;	/* ID$MEM-FERR = 0x08 */
205     	unsigned int  elcm_module;	/* Module id. */
206     	unsigned int  elcm_res04;	/* Reserved. */
207     	unsigned long elcm_merr;	/* CSR0: Error Reg 1. */
208     	unsigned long elcm_mcmd1;	/* CSR1: Command Trap 1. */
209     	unsigned long elcm_mcmd2;	/* CSR2: Command Trap 2. */
210     	unsigned long elcm_mconf;	/* CSR3: Configuration. */
211     	unsigned long elcm_medc1;	/* CSR4: EDC Status 1. */
212     	unsigned long elcm_medc2;	/* CSR5: EDC Status 2. */
213     	unsigned long elcm_medcc;	/* CSR6: EDC Control. */
214     	unsigned long elcm_msctl;	/* CSR7: Stream Buffer Control. */
215     	unsigned long elcm_mref;	/* CSR8: Refresh Control. */
216     	unsigned long elcm_filter;	/* CSR9: CRD Filter Control. */
217     };
218     
219     
220     /*
221      * Sable other CPU error frame - sable pfms section 3.43
222      */
223     struct el_t2_data_other_cpu {
224     	short	      elco_cpuid;	/* CPU ID */
225     	short	      elco_res02[3];
226     	unsigned long elco_bcc;	/* CSR 0 */
227     	unsigned long elco_bcce;	/* CSR 1 */
228     	unsigned long elco_bccea;	/* CSR 2 */
229     	unsigned long elco_bcue;	/* CSR 3 */
230     	unsigned long elco_bcuea;	/* CSR 4 */
231     	unsigned long elco_dter;	/* CSR 5 */
232     	unsigned long elco_cbctl;	/* CSR 6 */
233     	unsigned long elco_cbe;	/* CSR 7 */
234     	unsigned long elco_cbeal;	/* CSR 8 */
235     	unsigned long elco_cbeah;	/* CSR 9 */
236     	unsigned long elco_pmbx;	/* CSR 10 */
237     	unsigned long elco_ipir;	/* CSR 11 */
238     	unsigned long elco_sic;	/* CSR 12 */
239     	unsigned long elco_adlk;	/* CSR 13 */
240     	unsigned long elco_madrl;	/* CSR 14 */
241     	unsigned long elco_crrev4;	/* CSR 15 */
242     };
243     
244     /*
245      * Sable other CPU error frame - sable pfms section 3.44
246      */
247     struct el_t2_data_t2{
248     	struct el_t2_frame_header elct_hdr;	/* ID$T2-FRAME */
249     	unsigned long elct_iocsr;	/* IO Control and Status Register */
250     	unsigned long elct_cerr1;	/* Cbus Error Register 1 */
251     	unsigned long elct_cerr2;	/* Cbus Error Register 2 */
252     	unsigned long elct_cerr3;	/* Cbus Error Register 3 */
253     	unsigned long elct_perr1;	/* PCI Error Register 1 */
254     	unsigned long elct_perr2;	/* PCI Error Register 2 */
255     	unsigned long elct_hae0_1;	/* High Address Extension Register 1 */
256     	unsigned long elct_hae0_2;	/* High Address Extension Register 2 */
257     	unsigned long elct_hbase;	/* High Base Register */
258     	unsigned long elct_wbase1;	/* Window Base Register 1 */
259     	unsigned long elct_wmask1;	/* Window Mask Register 1 */
260     	unsigned long elct_tbase1;	/* Translated Base Register 1 */
261     	unsigned long elct_wbase2;	/* Window Base Register 2 */
262     	unsigned long elct_wmask2;	/* Window Mask Register 2 */
263     	unsigned long elct_tbase2;	/* Translated Base Register 2 */
264     	unsigned long elct_tdr0;	/* TLB Data Register 0 */
265     	unsigned long elct_tdr1;	/* TLB Data Register 1 */
266     	unsigned long elct_tdr2;	/* TLB Data Register 2 */
267     	unsigned long elct_tdr3;	/* TLB Data Register 3 */
268     	unsigned long elct_tdr4;	/* TLB Data Register 4 */
269     	unsigned long elct_tdr5;	/* TLB Data Register 5 */
270     	unsigned long elct_tdr6;	/* TLB Data Register 6 */
271     	unsigned long elct_tdr7;	/* TLB Data Register 7 */
272     };
273     
274     /*
275      * Sable error log data structure - sable pfms section 3.40
276      */
277     struct el_t2_data_corrected {
278     	unsigned long elcpb_biu_stat;
279     	unsigned long elcpb_biu_addr;
280     	unsigned long elcpb_biu_ctl;
281     	unsigned long elcpb_fill_syndrome;
282     	unsigned long elcpb_fill_addr;
283     	unsigned long elcpb_bc_tag;
284     };
285     
286     /*
287      * Sable error log data structure
288      * Note there are 4 memory slots on sable (see t2.h)
289      */
290     struct el_t2_frame_mcheck {
291     	struct el_t2_frame_header elfmc_header;	/* ID$P-FRAME_MCHECK */
292     	struct el_t2_logout_header elfmc_hdr;
293     	struct el_t2_procdata_mcheck elfmc_procdata;
294     	struct el_t2_sysdata_mcheck elfmc_sysdata;
295     	struct el_t2_data_t2 elfmc_t2data;
296     	struct el_t2_data_memory elfmc_memdata[4];
297     	struct el_t2_frame_header elfmc_footer;	/* empty */
298     };
299     
300     
301     /*
302      * Sable error log data structures on memory errors
303      */
304     struct el_t2_frame_corrected {
305     	struct el_t2_frame_header elfcc_header;	/* ID$P-BC-COR */
306     	struct el_t2_logout_header elfcc_hdr;
307     	struct el_t2_data_corrected elfcc_procdata;
308     /*	struct el_t2_data_t2 elfcc_t2data;		*/
309     /*	struct el_t2_data_memory elfcc_memdata[4];	*/
310     	struct el_t2_frame_header elfcc_footer;	/* empty */
311     };
312     
313     
314     #ifdef __KERNEL__
315     
316     #ifndef __EXTERN_INLINE
317     #define __EXTERN_INLINE extern inline
318     #define __IO_EXTERN_INLINE
319     #endif
320     
321     /*
322      * I/O functions:
323      *
324      * T2 (the core logic PCI/memory support chipset for the SABLE
325      * series of processors uses a sparse address mapping scheme to
326      * get at PCI memory and I/O.
327      */
328     
329     #define vip	volatile int *
330     #define vuip	volatile unsigned int *
331     
332     __EXTERN_INLINE unsigned int t2_inb(unsigned long addr)
333     {
334     	long result = *(vip) ((addr << 5) + T2_IO + 0x00);
335     	return __kernel_extbl(result, addr & 3);
336     }
337     
338     __EXTERN_INLINE void t2_outb(unsigned char b, unsigned long addr)
339     {
340     	unsigned long w;
341     
342     	w = __kernel_insbl(b, addr & 3);
343     	*(vuip) ((addr << 5) + T2_IO + 0x00) = w;
344     	mb();
345     }
346     
347     __EXTERN_INLINE unsigned int t2_inw(unsigned long addr)
348     {
349     	long result = *(vip) ((addr << 5) + T2_IO + 0x08);
350     	return __kernel_extwl(result, addr & 3);
351     }
352     
353     __EXTERN_INLINE void t2_outw(unsigned short b, unsigned long addr)
354     {
355     	unsigned long w;
356     
357     	w = __kernel_inswl(b, addr & 3);
358     	*(vuip) ((addr << 5) + T2_IO + 0x08) = w;
359     	mb();
360     }
361     
362     __EXTERN_INLINE unsigned int t2_inl(unsigned long addr)
363     {
364     	return *(vuip) ((addr << 5) + T2_IO + 0x18);
365     }
366     
367     __EXTERN_INLINE void t2_outl(unsigned int b, unsigned long addr)
368     {
369     	*(vuip) ((addr << 5) + T2_IO + 0x18) = b;
370     	mb();
371     }
372     
373     
374     /*
375      * Memory functions.
376      *
377      * For reading and writing 8 and 16 bit quantities we need to
378      * go through one of the three sparse address mapping regions
379      * and use the HAE_MEM CSR to provide some bits of the address.
380      * The following few routines use only sparse address region 1
381      * which gives 1Gbyte of accessible space which relates exactly
382      * to the amount of PCI memory mapping *into* system address space.
383      * See p 6-17 of the specification but it looks something like this:
384      *
385      * 21164 Address:
386      *
387      *          3         2         1
388      * 9876543210987654321098765432109876543210
389      * 1ZZZZ0.PCI.QW.Address............BBLL
390      *
391      * ZZ = SBZ
392      * BB = Byte offset
393      * LL = Transfer length
394      *
395      * PCI Address:
396      *
397      * 3         2         1
398      * 10987654321098765432109876543210
399      * HHH....PCI.QW.Address........ 00
400      *
401      * HHH = 31:29 HAE_MEM CSR
402      *
403      */
404     
405     __EXTERN_INLINE unsigned long t2_readb(unsigned long addr)
406     {
407     	unsigned long result, msb;
408     
409     	msb = addr & 0xE0000000;
410     	addr &= T2_MEM_R1_MASK;
411     	set_hae(msb);
412     
413     	result = *(vip) ((addr << 5) + T2_SPARSE_MEM + 0x00);
414     	return __kernel_extbl(result, addr & 3);
415     }
416     
417     __EXTERN_INLINE unsigned long t2_readw(unsigned long addr)
418     {
419     	unsigned long result, msb;
420     
421     	msb = addr & 0xE0000000;
422     	addr &= T2_MEM_R1_MASK;
423     	set_hae(msb);
424     
425     	result = *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08);
426     	return __kernel_extwl(result, addr & 3);
427     }
428     
429     /* On SABLE with T2, we must use SPARSE memory even for 32-bit access. */
430     __EXTERN_INLINE unsigned long t2_readl(unsigned long addr)
431     {
432     	unsigned long msb;
433     
434     	msb = addr & 0xE0000000;
435     	addr &= T2_MEM_R1_MASK;
436     	set_hae(msb);
437     
438     	return *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18);
439     }
440     
441     __EXTERN_INLINE unsigned long t2_readq(unsigned long addr)
442     {
443     	unsigned long r0, r1, work, msb;
444     
445     	msb = addr & 0xE0000000;
446     	addr &= T2_MEM_R1_MASK;
447     	set_hae(msb);
448     
449     	work = (addr << 5) + T2_SPARSE_MEM + 0x18;
450     	r0 = *(vuip)(work);
451     	r1 = *(vuip)(work + (4 << 5));
452     	return r1 << 32 | r0;
453     }
454     
455     __EXTERN_INLINE void t2_writeb(unsigned char b, unsigned long addr)
456     {
457     	unsigned long msb, w;
458     
459     	msb = addr & 0xE0000000;
460     	addr &= T2_MEM_R1_MASK;
461     	set_hae(msb);
462     
463     	w = __kernel_insbl(b, addr & 3);
464     	*(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x00) = w;
465     }
466     
467     __EXTERN_INLINE void t2_writew(unsigned short b, unsigned long addr)
468     {
469     	unsigned long msb, w;
470     
471     	msb = addr & 0xE0000000;
472     	addr &= T2_MEM_R1_MASK;
473     	set_hae(msb);
474     
475     	w = __kernel_inswl(b, addr & 3);
476     	*(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08) = w;
477     }
478     
479     /* On SABLE with T2, we must use SPARSE memory even for 32-bit access. */
480     __EXTERN_INLINE void t2_writel(unsigned int b, unsigned long addr)
481     {
482     	unsigned long msb;
483     
484     	msb = addr & 0xE0000000;
485     	addr &= T2_MEM_R1_MASK;
486     	set_hae(msb);
487     
488     	*(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18) = b;
489     }
490     
491     __EXTERN_INLINE void t2_writeq(unsigned long b, unsigned long addr)
492     {
493     	unsigned long msb, work;
494     
495     	msb = addr & 0xE0000000;
496     	addr &= T2_MEM_R1_MASK;
497     	set_hae(msb);
498     
499     	work = (addr << 5) + T2_SPARSE_MEM + 0x18;
500     	*(vuip)work = b;
501     	*(vuip)(work + (4 << 5)) = b >> 32;
502     }
503     
504     __EXTERN_INLINE unsigned long t2_ioremap(unsigned long addr, 
505     					 unsigned long size
506     					 __attribute__((unused)))
507     {
508     	return addr;
509     }
510     
511     __EXTERN_INLINE void t2_iounmap(unsigned long addr)
512     {
513     	return;
514     }
515     
516     __EXTERN_INLINE int t2_is_ioaddr(unsigned long addr)
517     {
518     	return (long)addr >= 0;
519     }
520     
521     #undef vip
522     #undef vuip
523     
524     #ifdef __WANT_IO_DEF
525     
526     #define __inb(p)		t2_inb((unsigned long)(p))
527     #define __inw(p)		t2_inw((unsigned long)(p))
528     #define __inl(p)		t2_inl((unsigned long)(p))
529     #define __outb(x,p)		t2_outb((x),(unsigned long)(p))
530     #define __outw(x,p)		t2_outw((x),(unsigned long)(p))
531     #define __outl(x,p)		t2_outl((x),(unsigned long)(p))
532     #define __readb(a)		t2_readb((unsigned long)(a))
533     #define __readw(a)		t2_readw((unsigned long)(a))
534     #define __readl(a)		t2_readl((unsigned long)(a))
535     #define __readq(a)		t2_readq((unsigned long)(a))
536     #define __writeb(x,a)		t2_writeb((x),(unsigned long)(a))
537     #define __writew(x,a)		t2_writew((x),(unsigned long)(a))
538     #define __writel(x,a)		t2_writel((x),(unsigned long)(a))
539     #define __writeq(x,a)		t2_writeq((x),(unsigned long)(a))
540     #define __ioremap(a,s)		t2_ioremap((unsigned long)(a),(s))
541     #define __iounmap(a)		t2_iounmap((unsigned long)(a))
542     #define __is_ioaddr(a)		t2_is_ioaddr((unsigned long)(a))
543     
544     #endif /* __WANT_IO_DEF */
545     
546     #ifdef __IO_EXTERN_INLINE
547     #undef __EXTERN_INLINE
548     #undef __IO_EXTERN_INLINE
549     #endif
550     
551     #endif /* __KERNEL__ */
552     
553     #endif /* __ALPHA_T2__H__ */
554