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[linux-2.6/openmoko-kernel/knife-kernel.git] / include / asm-alpha / core_mcpcia.h
blob980a3c51b18eb1f93e1f96d5ddc87d40a1321ddf
1 #ifndef __ALPHA_MCPCIA__H__
2 #define __ALPHA_MCPCIA__H__
3
4 /* Define to experiment with fitting everything into one 128MB HAE window.
5 One window per bus, that is. */
6 #define MCPCIA_ONE_HAE_WINDOW 1
7
8 #include <linux/types.h>
9 #include <linux/pci.h>
10 #include <asm/compiler.h>
11
12 /*
13 * MCPCIA is the internal name for a core logic chipset which provides
14 * PCI access for the RAWHIDE family of systems.
15 *
16 * This file is based on:
17 *
18 * RAWHIDE System Programmer's Manual
19 * 16-May-96
20 * Rev. 1.4
21 *
22 */
23
24 /*------------------------------------------------------------------------**
25 ** **
26 ** I/O procedures **
27 ** **
28 ** inport[b|w|t|l], outport[b|w|t|l] 8:16:24:32 IO xfers **
29 ** inportbxt: 8 bits only **
30 ** inport: alias of inportw **
31 ** outport: alias of outportw **
32 ** **
33 ** inmem[b|w|t|l], outmem[b|w|t|l] 8:16:24:32 ISA memory xfers **
34 ** inmembxt: 8 bits only **
35 ** inmem: alias of inmemw **
36 ** outmem: alias of outmemw **
37 ** **
38 **------------------------------------------------------------------------*/
39
40
41 /* MCPCIA ADDRESS BIT DEFINITIONS
42 *
43 * 3333 3333 3322 2222 2222 1111 1111 11
44 * 9876 5432 1098 7654 3210 9876 5432 1098 7654 3210
45 * ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
46 * 1 000
47 * ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
48 * | |\|
49 * | Byte Enable --+ |
50 * | Transfer Length --+
51 * +-- IO space, not cached
52 *
53 * Byte Transfer
54 * Enable Length Transfer Byte Address
55 * adr<6:5> adr<4:3> Length Enable Adder
56 * ---------------------------------------------
57 * 00 00 Byte 1110 0x000
58 * 01 00 Byte 1101 0x020
59 * 10 00 Byte 1011 0x040
60 * 11 00 Byte 0111 0x060
61 *
62 * 00 01 Word 1100 0x008
63 * 01 01 Word 1001 0x028 <= Not supported in this code.
64 * 10 01 Word 0011 0x048
65 *
66 * 00 10 Tribyte 1000 0x010
67 * 01 10 Tribyte 0001 0x030
68 *
69 * 10 11 Longword 0000 0x058
70 *
71 * Note that byte enables are asserted low.
72 *
73 */
74
75 #define MCPCIA_MID(m) ((unsigned long)(m) << 33)
76
77 /* Dodge has PCI0 and PCI1 at MID 4 and 5 respectively.
78 Durango adds PCI2 and PCI3 at MID 6 and 7 respectively. */
79 #define MCPCIA_HOSE2MID(h) ((h) + 4)
80
81 #define MCPCIA_MEM_MASK 0x07ffffff /* SPARSE Mem region mask is 27 bits */
82
83 /*
84 * Memory spaces:
85 */
86 #define MCPCIA_SPARSE(m) (IDENT_ADDR + 0xf000000000UL + MCPCIA_MID(m))
87 #define MCPCIA_DENSE(m) (IDENT_ADDR + 0xf100000000UL + MCPCIA_MID(m))
88 #define MCPCIA_IO(m) (IDENT_ADDR + 0xf180000000UL + MCPCIA_MID(m))
89 #define MCPCIA_CONF(m) (IDENT_ADDR + 0xf1c0000000UL + MCPCIA_MID(m))
90 #define MCPCIA_CSR(m) (IDENT_ADDR + 0xf1e0000000UL + MCPCIA_MID(m))
91 #define MCPCIA_IO_IACK(m) (IDENT_ADDR + 0xf1f0000000UL + MCPCIA_MID(m))
92 #define MCPCIA_DENSE_IO(m) (IDENT_ADDR + 0xe1fc000000UL + MCPCIA_MID(m))
93 #define MCPCIA_DENSE_CONF(m) (IDENT_ADDR + 0xe1fe000000UL + MCPCIA_MID(m))
94
95 /*
96 * General Registers
97 */
98 #define MCPCIA_REV(m) (MCPCIA_CSR(m) + 0x000)
99 #define MCPCIA_WHOAMI(m) (MCPCIA_CSR(m) + 0x040)
100 #define MCPCIA_PCI_LAT(m) (MCPCIA_CSR(m) + 0x080)
101 #define MCPCIA_CAP_CTRL(m) (MCPCIA_CSR(m) + 0x100)
102 #define MCPCIA_HAE_MEM(m) (MCPCIA_CSR(m) + 0x400)
103 #define MCPCIA_HAE_IO(m) (MCPCIA_CSR(m) + 0x440)
104 #define _MCPCIA_IACK_SC(m) (MCPCIA_CSR(m) + 0x480)
105 #define MCPCIA_HAE_DENSE(m) (MCPCIA_CSR(m) + 0x4C0)
106
107 /*
108 * Interrupt Control registers
109 */
110 #define MCPCIA_INT_CTL(m) (MCPCIA_CSR(m) + 0x500)
111 #define MCPCIA_INT_REQ(m) (MCPCIA_CSR(m) + 0x540)
112 #define MCPCIA_INT_TARG(m) (MCPCIA_CSR(m) + 0x580)
113 #define MCPCIA_INT_ADR(m) (MCPCIA_CSR(m) + 0x5C0)
114 #define MCPCIA_INT_ADR_EXT(m) (MCPCIA_CSR(m) + 0x600)
115 #define MCPCIA_INT_MASK0(m) (MCPCIA_CSR(m) + 0x640)
116 #define MCPCIA_INT_MASK1(m) (MCPCIA_CSR(m) + 0x680)
117 #define MCPCIA_INT_ACK0(m) (MCPCIA_CSR(m) + 0x10003f00)
118 #define MCPCIA_INT_ACK1(m) (MCPCIA_CSR(m) + 0x10003f40)
119
120 /*
121 * Performance Monitor registers
122 */
123 #define MCPCIA_PERF_MON(m) (MCPCIA_CSR(m) + 0x300)
124 #define MCPCIA_PERF_CONT(m) (MCPCIA_CSR(m) + 0x340)
125
126 /*
127 * Diagnostic Registers
128 */
129 #define MCPCIA_CAP_DIAG(m) (MCPCIA_CSR(m) + 0x700)
130 #define MCPCIA_TOP_OF_MEM(m) (MCPCIA_CSR(m) + 0x7C0)
131
132 /*
133 * Error registers
134 */
135 #define MCPCIA_MC_ERR0(m) (MCPCIA_CSR(m) + 0x800)
136 #define MCPCIA_MC_ERR1(m) (MCPCIA_CSR(m) + 0x840)
137 #define MCPCIA_CAP_ERR(m) (MCPCIA_CSR(m) + 0x880)
138 #define MCPCIA_PCI_ERR1(m) (MCPCIA_CSR(m) + 0x1040)
139 #define MCPCIA_MDPA_STAT(m) (MCPCIA_CSR(m) + 0x4000)
140 #define MCPCIA_MDPA_SYN(m) (MCPCIA_CSR(m) + 0x4040)
141 #define MCPCIA_MDPA_DIAG(m) (MCPCIA_CSR(m) + 0x4080)
142 #define MCPCIA_MDPB_STAT(m) (MCPCIA_CSR(m) + 0x8000)
143 #define MCPCIA_MDPB_SYN(m) (MCPCIA_CSR(m) + 0x8040)
144 #define MCPCIA_MDPB_DIAG(m) (MCPCIA_CSR(m) + 0x8080)
145
146 /*
147 * PCI Address Translation Registers.
148 */
149 #define MCPCIA_SG_TBIA(m) (MCPCIA_CSR(m) + 0x1300)
150 #define MCPCIA_HBASE(m) (MCPCIA_CSR(m) + 0x1340)
151
152 #define MCPCIA_W0_BASE(m) (MCPCIA_CSR(m) + 0x1400)
153 #define MCPCIA_W0_MASK(m) (MCPCIA_CSR(m) + 0x1440)
154 #define MCPCIA_T0_BASE(m) (MCPCIA_CSR(m) + 0x1480)
155
156 #define MCPCIA_W1_BASE(m) (MCPCIA_CSR(m) + 0x1500)
157 #define MCPCIA_W1_MASK(m) (MCPCIA_CSR(m) + 0x1540)
158 #define MCPCIA_T1_BASE(m) (MCPCIA_CSR(m) + 0x1580)
159
160 #define MCPCIA_W2_BASE(m) (MCPCIA_CSR(m) + 0x1600)
161 #define MCPCIA_W2_MASK(m) (MCPCIA_CSR(m) + 0x1640)
162 #define MCPCIA_T2_BASE(m) (MCPCIA_CSR(m) + 0x1680)
163
164 #define MCPCIA_W3_BASE(m) (MCPCIA_CSR(m) + 0x1700)
165 #define MCPCIA_W3_MASK(m) (MCPCIA_CSR(m) + 0x1740)
166 #define MCPCIA_T3_BASE(m) (MCPCIA_CSR(m) + 0x1780)
167
168 /* Hack! Only words for bus 0. */
169
170 #ifndef MCPCIA_ONE_HAE_WINDOW
171 #define MCPCIA_HAE_ADDRESS MCPCIA_HAE_MEM(4)
172 #endif
173 #define MCPCIA_IACK_SC _MCPCIA_IACK_SC(4)
174
175 /*
176 * The canonical non-remaped I/O and MEM addresses have these values
177 * subtracted out. This is arranged so that folks manipulating ISA
178 * devices can use their familiar numbers and have them map to bus 0.
179 */
180
181 #define MCPCIA_IO_BIAS MCPCIA_IO(4)
182 #define MCPCIA_MEM_BIAS MCPCIA_DENSE(4)
183
184 /* Offset between ram physical addresses and pci64 DAC bus addresses. */
185 #define MCPCIA_DAC_OFFSET (1UL << 40)
186
187 /*
188 * Data structure for handling MCPCIA machine checks:
189 */
190 struct el_MCPCIA_uncorrected_frame_mcheck {
191 struct el_common header;
192 struct el_common_EV5_uncorrectable_mcheck procdata;
193 };
194
195
196 #ifdef __KERNEL__
197
198 #ifndef __EXTERN_INLINE
199 #define __EXTERN_INLINE extern inline
200 #define __IO_EXTERN_INLINE
201 #endif
202
203 /*
204 * I/O functions:
205 *
206 * MCPCIA, the RAWHIDE family PCI/memory support chipset for the EV5 (21164)
207 * and EV56 (21164a) processors, can use either a sparse address mapping
208 * scheme, or the so-called byte-word PCI address space, to get at PCI memory
209 * and I/O.
210 *
211 * Unfortunately, we can't use BWIO with EV5, so for now, we always use SPARSE.
212 */
213
214 /*
215 * Memory functions. 64-bit and 32-bit accesses are done through
216 * dense memory space, everything else through sparse space.
217 *
218 * For reading and writing 8 and 16 bit quantities we need to
219 * go through one of the three sparse address mapping regions
220 * and use the HAE_MEM CSR to provide some bits of the address.
221 * The following few routines use only sparse address region 1
222 * which gives 1Gbyte of accessible space which relates exactly
223 * to the amount of PCI memory mapping *into* system address space.
224 * See p 6-17 of the specification but it looks something like this:
225 *
226 * 21164 Address:
227 *
228 * 3 2 1
229 * 9876543210987654321098765432109876543210
230 * 1ZZZZ0.PCI.QW.Address............BBLL
231 *
232 * ZZ = SBZ
233 * BB = Byte offset
234 * LL = Transfer length
235 *
236 * PCI Address:
237 *
238 * 3 2 1
239 * 10987654321098765432109876543210
240 * HHH....PCI.QW.Address........ 00
241 *
242 * HHH = 31:29 HAE_MEM CSR
243 *
244 */
245
246 #define vip volatile int __force *
247 #define vuip volatile unsigned int __force *
248
249 #ifdef MCPCIA_ONE_HAE_WINDOW
250 #define MCPCIA_FROB_MMIO \
251 if (__mcpcia_is_mmio(hose)) { \
252 set_hae(hose & 0xffffffff); \
253 hose = hose - MCPCIA_DENSE(4) + MCPCIA_SPARSE(4); \
254 }
255 #else
256 #define MCPCIA_FROB_MMIO \
257 if (__mcpcia_is_mmio(hose)) { \
258 hose = hose - MCPCIA_DENSE(4) + MCPCIA_SPARSE(4); \
259 }
260 #endif
261
262 static inline int __mcpcia_is_mmio(unsigned long addr)
263 {
264 return (addr & 0x80000000UL) == 0;
265 }
266
267 __EXTERN_INLINE unsigned int mcpcia_ioread8(void __iomem *xaddr)
268 {
269 unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
270 unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
271 unsigned long result;
272
273 MCPCIA_FROB_MMIO;
274
275 result = *(vip) ((addr << 5) + hose + 0x00);
276 return __kernel_extbl(result, addr & 3);
277 }
278
279 __EXTERN_INLINE void mcpcia_iowrite8(u8 b, void __iomem *xaddr)
280 {
281 unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
282 unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
283 unsigned long w;
284
285 MCPCIA_FROB_MMIO;
286
287 w = __kernel_insbl(b, addr & 3);
288 *(vuip) ((addr << 5) + hose + 0x00) = w;
289 }
290
291 __EXTERN_INLINE unsigned int mcpcia_ioread16(void __iomem *xaddr)
292 {
293 unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
294 unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
295 unsigned long result;
296
297 MCPCIA_FROB_MMIO;
298
299 result = *(vip) ((addr << 5) + hose + 0x08);
300 return __kernel_extwl(result, addr & 3);
301 }
302
303 __EXTERN_INLINE void mcpcia_iowrite16(u16 b, void __iomem *xaddr)
304 {
305 unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
306 unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
307 unsigned long w;
308
309 MCPCIA_FROB_MMIO;
310
311 w = __kernel_inswl(b, addr & 3);
312 *(vuip) ((addr << 5) + hose + 0x08) = w;
313 }
314
315 __EXTERN_INLINE unsigned int mcpcia_ioread32(void __iomem *xaddr)
316 {
317 unsigned long addr = (unsigned long)xaddr;
318
319 if (!__mcpcia_is_mmio(addr))
320 addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
321
322 return *(vuip)addr;
323 }
324
325 __EXTERN_INLINE void mcpcia_iowrite32(u32 b, void __iomem *xaddr)
326 {
327 unsigned long addr = (unsigned long)xaddr;
328
329 if (!__mcpcia_is_mmio(addr))
330 addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
331
332 *(vuip)addr = b;
333 }
334
335
336 __EXTERN_INLINE void __iomem *mcpcia_ioportmap(unsigned long addr)
337 {
338 return (void __iomem *)(addr + MCPCIA_IO_BIAS);
339 }
340
341 __EXTERN_INLINE void __iomem *mcpcia_ioremap(unsigned long addr,
342 unsigned long size)
343 {
344 return (void __iomem *)(addr + MCPCIA_MEM_BIAS);
345 }
346
347 __EXTERN_INLINE int mcpcia_is_ioaddr(unsigned long addr)
348 {
349 return addr >= MCPCIA_SPARSE(0);
350 }
351
352 __EXTERN_INLINE int mcpcia_is_mmio(const volatile void __iomem *xaddr)
353 {
354 unsigned long addr = (unsigned long) xaddr;
355 return __mcpcia_is_mmio(addr);
356 }
357
358 #undef MCPCIA_FROB_MMIO
359
360 #undef vip
361 #undef vuip
362
363 #undef __IO_PREFIX
364 #define __IO_PREFIX mcpcia
365 #define mcpcia_trivial_rw_bw 2
366 #define mcpcia_trivial_rw_lq 1
367 #define mcpcia_trivial_io_bw 0
368 #define mcpcia_trivial_io_lq 0
369 #define mcpcia_trivial_iounmap 1
370 #include <asm/io_trivial.h>
371
372 #ifdef __IO_EXTERN_INLINE
373 #undef __EXTERN_INLINE
374 #undef __IO_EXTERN_INLINE
375 #endif
376
377 #endif /* __KERNEL__ */
378
379 #endif /* __ALPHA_MCPCIA__H__ */
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