1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ALPHA_TITAN__H__
3 #define __ALPHA_TITAN__H__
4 
5 #include <linux/types.h>
6 #include <asm/compiler.h>
7 
8 /*
9  * TITAN is the internal names for a core logic chipset which provides
10  * memory controller and PCI/AGP access for 21264 based systems.
11  *
12  * This file is based on:
13  *
14  * Titan Chipset Engineering Specification
15  * Revision 0.12
16  * 13 July 1999
17  *
18  */
19 
20 /* XXX: Do we need to conditionalize on this?  */
21 #ifdef USE_48_BIT_KSEG
22 #define TI_BIAS 0x80000000000UL
23 #else
24 #define TI_BIAS 0x10000000000UL
25 #endif
26 
27 /*
28  * CChip, DChip, and PChip registers
29  */
30 
31 typedef struct {
32 	volatile unsigned long csr __attribute__((aligned(64)));
33 } titan_64;
34 
35 typedef struct {
36 	titan_64	csc;
37 	titan_64	mtr;
38 	titan_64	misc;
39 	titan_64	mpd;
40 	titan_64	aar0;
41 	titan_64	aar1;
42 	titan_64	aar2;
43 	titan_64	aar3;
44 	titan_64	dim0;
45 	titan_64	dim1;
46 	titan_64	dir0;
47 	titan_64	dir1;
48 	titan_64	drir;
49 	titan_64	prben;
50 	titan_64	iic0;
51 	titan_64	iic1;
52 	titan_64	mpr0;
53 	titan_64	mpr1;
54 	titan_64	mpr2;
55 	titan_64	mpr3;
56 	titan_64	rsvd[2];
57 	titan_64	ttr;
58 	titan_64	tdr;
59 	titan_64	dim2;
60 	titan_64	dim3;
61 	titan_64	dir2;
62 	titan_64	dir3;
63 	titan_64	iic2;
64 	titan_64	iic3;
65 	titan_64	pwr;
66 	titan_64	reserved[17];
67 	titan_64	cmonctla;
68 	titan_64	cmonctlb;
69 	titan_64	cmoncnt01;
70 	titan_64	cmoncnt23;
71 	titan_64	cpen;
72 } titan_cchip;
73 
74 typedef struct {
75 	titan_64	dsc;
76 	titan_64	str;
77 	titan_64	drev;
78 	titan_64	dsc2;
79 } titan_dchip;
80 
81 typedef struct {
82 	titan_64	wsba[4];
83 	titan_64	wsm[4];
84 	titan_64	tba[4];
85 	titan_64	pctl;
86 	titan_64	plat;
87 	titan_64	reserved0[2];
88 	union {
89 		struct {
90 			titan_64	serror;
91 			titan_64	serren;
92 			titan_64	serrset;
93 			titan_64	reserved0;
94 			titan_64	gperror;
95 			titan_64	gperren;
96 			titan_64	gperrset;
97 			titan_64	reserved1;
98 			titan_64	gtlbiv;
99 			titan_64	gtlbia;
100 			titan_64	reserved2[2];
101 			titan_64	sctl;
102 			titan_64	reserved3[3];
103 		} g;
104 		struct {
105 			titan_64	agperror;
106 			titan_64	agperren;
107 			titan_64	agperrset;
108 			titan_64	agplastwr;
109 			titan_64	aperror;
110 			titan_64	aperren;
111 			titan_64	aperrset;
112 			titan_64	reserved0;
113 			titan_64	atlbiv;
114 			titan_64	atlbia;
115 			titan_64	reserved1[6];
116 		} a;
117 	} port_specific;
118 	titan_64	sprst;
119 	titan_64	reserved1[31];
120 } titan_pachip_port;
121 
122 typedef struct {
123 	titan_pachip_port	g_port;
124 	titan_pachip_port	a_port;
125 } titan_pachip;
126 
127 #define TITAN_cchip	((titan_cchip  *)(IDENT_ADDR+TI_BIAS+0x1A0000000UL))
128 #define TITAN_dchip    	((titan_dchip  *)(IDENT_ADDR+TI_BIAS+0x1B0000800UL))
129 #define TITAN_pachip0 	((titan_pachip *)(IDENT_ADDR+TI_BIAS+0x180000000UL))
130 #define TITAN_pachip1 	((titan_pachip *)(IDENT_ADDR+TI_BIAS+0x380000000UL))
131 extern unsigned TITAN_agp;
132 extern int TITAN_bootcpu;
133 
134 /*
135  * TITAN PA-chip Window Space Base Address register.
136  * (WSBA[0-2])
137  */
138 #define wsba_m_ena 0x1
139 #define wsba_m_sg 0x2
140 #define wsba_m_addr 0xFFF00000
141 #define wmask_k_sz1gb 0x3FF00000
142 union TPAchipWSBA {
143 	struct  {
144 		unsigned wsba_v_ena : 1;
145 		unsigned wsba_v_sg : 1;
146 		unsigned wsba_v_rsvd1 : 18;
147 		unsigned wsba_v_addr : 12;
148 		unsigned wsba_v_rsvd2 : 32;
149         } wsba_r_bits;
150 	int wsba_q_whole [2];
151 };
152 
153 /*
154  * TITAN PA-chip Control Register
155  * This definition covers both the G-Port GPCTL and the A-PORT APCTL.
156  * Bits <51:0> are the same in both cases. APCTL<63:52> are only
157  * applicable to AGP.
158  */
159 #define pctl_m_fbtb 			0x00000001
160 #define pctl_m_thdis 			0x00000002
161 #define pctl_m_chaindis 		0x00000004
162 #define pctl_m_tgtlat 			0x00000018
163 #define pctl_m_hole  	  		0x00000020
164 #define pctl_m_mwin 	  		0x00000040
165 #define pctl_m_arbena 	  		0x00000080
166 #define pctl_m_prigrp 	  		0x0000FF00
167 #define pctl_m_ppri 	  		0x00010000
168 #define pctl_m_pcispd66  		0x00020000
169 #define pctl_m_cngstlt	  		0x003C0000
170 #define pctl_m_ptpdesten 		0x3FC00000
171 #define pctl_m_dpcen			0x40000000
172 #define pctl_m_apcen		0x0000000080000000UL
173 #define pctl_m_dcrtv		0x0000000300000000UL
174 #define pctl_m_en_stepping	0x0000000400000000UL
175 #define apctl_m_rsvd1		0x000FFFF800000000UL
176 #define apctl_m_agp_rate	0x0030000000000000UL
177 #define apctl_m_agp_sba_en	0x0040000000000000UL
178 #define apctl_m_agp_en		0x0080000000000000UL
179 #define apctl_m_rsvd2		0x0100000000000000UL
180 #define apctl_m_agp_present	0x0200000000000000UL
181 #define apctl_agp_hp_rd		0x1C00000000000000UL
182 #define apctl_agp_lp_rd		0xE000000000000000UL
183 #define gpctl_m_rsvd		0xFFFFFFF800000000UL
184 union TPAchipPCTL {
185 	struct {
186 		unsigned pctl_v_fbtb : 1;		/* A/G [0]     */
187 		unsigned pctl_v_thdis : 1;		/* A/G [1]     */
188 		unsigned pctl_v_chaindis : 1;		/* A/G [2]     */
189 		unsigned pctl_v_tgtlat : 2;		/* A/G [4:3]   */
190 		unsigned pctl_v_hole : 1;		/* A/G [5]     */
191 		unsigned pctl_v_mwin : 1;		/* A/G [6]     */
192 		unsigned pctl_v_arbena : 1;		/* A/G [7]     */
193 		unsigned pctl_v_prigrp : 8;		/* A/G [15:8]  */
194 		unsigned pctl_v_ppri : 1;		/* A/G [16]    */
195 		unsigned pctl_v_pcispd66 : 1;		/* A/G [17]    */
196 		unsigned pctl_v_cngstlt : 4;		/* A/G [21:18] */
197 		unsigned pctl_v_ptpdesten : 8;		/* A/G [29:22] */
198 		unsigned pctl_v_dpcen : 1;		/* A/G [30]    */
199 		unsigned pctl_v_apcen : 1;		/* A/G [31]    */
200 		unsigned pctl_v_dcrtv : 2;		/* A/G [33:32] */
201 		unsigned pctl_v_en_stepping :1;		/* A/G [34]    */
202 		unsigned apctl_v_rsvd1 : 17;		/* A   [51:35] */
203 		unsigned apctl_v_agp_rate : 2;		/* A   [53:52] */
204 		unsigned apctl_v_agp_sba_en : 1;	/* A   [54]    */
205 		unsigned apctl_v_agp_en : 1;		/* A   [55]    */
206 		unsigned apctl_v_rsvd2 : 1;		/* A   [56]    */
207 		unsigned apctl_v_agp_present : 1;	/* A   [57]    */
208 		unsigned apctl_v_agp_hp_rd : 3;		/* A   [60:58] */
209 		unsigned apctl_v_agp_lp_rd : 3;		/* A   [63:61] */
210 	} pctl_r_bits;
211 	unsigned int pctl_l_whole [2];
212 	unsigned long pctl_q_whole;
213 };
214 
215 /*
216  * SERROR / SERREN / SERRSET
217  */
218 union TPAchipSERR {
219 	struct {
220 		unsigned serr_v_lost_uecc : 1;		/* [0]		*/
221 		unsigned serr_v_uecc : 1;		/* [1]  	*/
222 		unsigned serr_v_cre : 1;		/* [2]		*/
223 		unsigned serr_v_nxio : 1;		/* [3]		*/
224 		unsigned serr_v_lost_cre : 1;		/* [4]		*/
225 		unsigned serr_v_rsvd0 : 10;		/* [14:5]	*/
226 		unsigned serr_v_addr : 32;		/* [46:15]	*/
227 		unsigned serr_v_rsvd1 : 5;		/* [51:47]	*/
228 		unsigned serr_v_source : 2;		/* [53:52]	*/
229 		unsigned serr_v_cmd : 2;		/* [55:54]	*/
230 		unsigned serr_v_syn : 8;		/* [63:56]	*/
231 	} serr_r_bits;
232 	unsigned int serr_l_whole[2];
233 	unsigned long serr_q_whole;
234 };
235 
236 /*
237  * GPERROR / APERROR / GPERREN / APERREN / GPERRSET / APERRSET
238  */
239 union TPAchipPERR {
240 	struct {
241 		unsigned long perr_v_lost : 1;	     	/* [0]		*/
242 		unsigned long perr_v_serr : 1;		/* [1]		*/
243 		unsigned long perr_v_perr : 1;		/* [2]		*/
244 		unsigned long perr_v_dcrto : 1;		/* [3]		*/
245 		unsigned long perr_v_sge : 1;		/* [4]		*/
246 		unsigned long perr_v_ape : 1;		/* [5]		*/
247 		unsigned long perr_v_ta : 1;		/* [6]		*/
248 		unsigned long perr_v_dpe : 1;		/* [7]		*/
249 		unsigned long perr_v_nds : 1;		/* [8]		*/
250 		unsigned long perr_v_iptpr : 1;		/* [9]		*/
251 		unsigned long perr_v_iptpw : 1;		/* [10] 	*/
252 		unsigned long perr_v_rsvd0 : 3;		/* [13:11]	*/
253 		unsigned long perr_v_addr : 33;		/* [46:14]	*/
254 		unsigned long perr_v_dac : 1;		/* [47]		*/
255 		unsigned long perr_v_mwin : 1;		/* [48]		*/
256 		unsigned long perr_v_rsvd1 : 3;		/* [51:49]	*/
257 		unsigned long perr_v_cmd : 4;		/* [55:52]	*/
258 		unsigned long perr_v_rsvd2 : 8;		/* [63:56]	*/
259 	} perr_r_bits;
260 	unsigned int perr_l_whole[2];
261 	unsigned long perr_q_whole;
262 };
263 
264 /*
265  * AGPERROR / AGPERREN / AGPERRSET
266  */
267 union TPAchipAGPERR {
268 	struct {
269 		unsigned agperr_v_lost : 1;		/* [0]		*/
270 		unsigned agperr_v_lpqfull : 1;		/* [1]		*/
271 		unsigned apgerr_v_hpqfull : 1;		/* [2]		*/
272 		unsigned agperr_v_rescmd : 1;		/* [3]		*/
273 		unsigned agperr_v_ipte : 1;		/* [4]		*/
274 		unsigned agperr_v_ptp :	1;      	/* [5]		*/
275 		unsigned agperr_v_nowindow : 1;		/* [6]		*/
276 		unsigned agperr_v_rsvd0 : 8;		/* [14:7]	*/
277 		unsigned agperr_v_addr : 32;		/* [46:15]	*/
278 		unsigned agperr_v_rsvd1 : 1;		/* [47]		*/
279 		unsigned agperr_v_dac : 1;		/* [48]		*/
280 		unsigned agperr_v_mwin : 1;		/* [49]		*/
281 		unsigned agperr_v_cmd : 3;		/* [52:50]	*/
282 		unsigned agperr_v_length : 6;		/* [58:53]	*/
283 		unsigned agperr_v_fence : 1;		/* [59]		*/
284 		unsigned agperr_v_rsvd2 : 4;		/* [63:60]	*/
285 	} agperr_r_bits;
286 	unsigned int agperr_l_whole[2];
287 	unsigned long agperr_q_whole;
288 };
289 /*
290  * Memory spaces:
291  * Hose numbers are assigned as follows:
292  *		0 - pachip 0 / G Port
293  *		1 - pachip 1 / G Port
294  * 		2 - pachip 0 / A Port
295  *      	3 - pachip 1 / A Port
296  */
297 #define TITAN_HOSE_SHIFT       (33)
298 #define TITAN_HOSE(h)		(((unsigned long)(h)) << TITAN_HOSE_SHIFT)
299 #define TITAN_BASE		(IDENT_ADDR + TI_BIAS)
300 #define TITAN_MEM(h)	     	(TITAN_BASE+TITAN_HOSE(h)+0x000000000UL)
301 #define _TITAN_IACK_SC(h)    	(TITAN_BASE+TITAN_HOSE(h)+0x1F8000000UL)
302 #define TITAN_IO(h)	     	(TITAN_BASE+TITAN_HOSE(h)+0x1FC000000UL)
303 #define TITAN_CONF(h)	     	(TITAN_BASE+TITAN_HOSE(h)+0x1FE000000UL)
304 
305 #define TITAN_HOSE_MASK		TITAN_HOSE(3)
306 #define TITAN_IACK_SC	     	_TITAN_IACK_SC(0) /* hack! */
307 
308 /*
309  * The canonical non-remaped I/O and MEM addresses have these values
310  * subtracted out.  This is arranged so that folks manipulating ISA
311  * devices can use their familiar numbers and have them map to bus 0.
312  */
313 
314 #define TITAN_IO_BIAS		TITAN_IO(0)
315 #define TITAN_MEM_BIAS		TITAN_MEM(0)
316 
317 /* The IO address space is larger than 0xffff */
318 #define TITAN_IO_SPACE		(TITAN_CONF(0) - TITAN_IO(0))
319 
320 /* TIG Space */
321 #define TITAN_TIG_SPACE		(TITAN_BASE + 0x100000000UL)
322 
323 /* Offset between ram physical addresses and pci64 DAC bus addresses.  */
324 /* ??? Just a guess.  Ought to confirm it hasn't been moved.  */
325 #define TITAN_DAC_OFFSET	(1UL << 40)
326 
327 /*
328  * Data structure for handling TITAN machine checks:
329  */
330 #define SCB_Q_SYSERR	0x620
331 #define SCB_Q_PROCERR	0x630
332 #define SCB_Q_SYSMCHK	0x660
333 #define SCB_Q_PROCMCHK	0x670
334 #define SCB_Q_SYSEVENT	0x680	/* environmental / system management */
335 struct el_TITAN_sysdata_mcheck {
336 	u64 summary;	/* 0x00 */
337 	u64 c_dirx;	/* 0x08 */
338 	u64 c_misc;	/* 0x10 */
339 	u64 p0_serror;	/* 0x18 */
340 	u64 p0_gperror; /* 0x20 */
341 	u64 p0_aperror; /* 0x28 */
342 	u64 p0_agperror;/* 0x30 */
343 	u64 p1_serror;	/* 0x38 */
344 	u64 p1_gperror; /* 0x40 */
345 	u64 p1_aperror; /* 0x48 */
346 	u64 p1_agperror;/* 0x50 */
347 };
348 
349 /*
350  * System area for a privateer 680 environmental/system management mcheck
351  */
352 struct el_PRIVATEER_envdata_mcheck {
353 	u64 summary;	/* 0x00 */
354 	u64 c_dirx;	/* 0x08 */
355 	u64 smir;	/* 0x10 */
356 	u64 cpuir;	/* 0x18 */
357 	u64 psir;	/* 0x20 */
358 	u64 fault;	/* 0x28 */
359 	u64 sys_doors;	/* 0x30 */
360 	u64 temp_warn;	/* 0x38 */
361 	u64 fan_ctrl;	/* 0x40 */
362 	u64 code;	/* 0x48 */
363 	u64 reserved;	/* 0x50 */
364 };
365 
366 #ifdef __KERNEL__
367 
368 #ifndef __EXTERN_INLINE
369 #define __EXTERN_INLINE extern inline
370 #define __IO_EXTERN_INLINE
371 #endif
372 
373 /*
374  * I/O functions:
375  *
376  * TITAN, a 21??? PCI/memory support chipset for the EV6 (21264)
377  * can only use linear accesses to get at PCI/AGP memory and I/O spaces.
378  */
379 
380 /*
381  * Memory functions.  all accesses are done through linear space.
382  */
383 extern void __iomem *titan_ioportmap(unsigned long addr);
384 extern void __iomem *titan_ioremap(unsigned long addr, unsigned long size);
385 extern void titan_iounmap(volatile void __iomem *addr);
386 
387 __EXTERN_INLINE int titan_is_ioaddr(unsigned long addr)
388 {
389 	return addr >= TITAN_BASE;
390 }
391 
392 extern int titan_is_mmio(const volatile void __iomem *addr);
393 
394 #undef __IO_PREFIX
395 #define __IO_PREFIX		titan
396 #define titan_trivial_rw_bw	1
397 #define titan_trivial_rw_lq	1
398 #define titan_trivial_io_bw	1
399 #define titan_trivial_io_lq	1
400 #define titan_trivial_iounmap	0
401 #include <asm/io_trivial.h>
402 
403 #ifdef __IO_EXTERN_INLINE
404 #undef __EXTERN_INLINE
405 #undef __IO_EXTERN_INLINE
406 #endif
407 
408 #endif /* __KERNEL__ */
409 
410 #endif /* __ALPHA_TITAN__H__ */
411