1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License.  See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 1995 - 1998 by Andreas Busse and Ralf Baechle
7  */
8 #ifndef __ASM_JAZZ_H
9 #define __ASM_JAZZ_H
10 
11 /*
12  * The addresses below are virtual address. The mappings are
13  * created on startup via wired entries in the tlb. The Mips
14  * Magnum R3000 and R4000 machines are similar in many aspects,
15  * but many hardware register are accessible at 0xb9000000 in
16  * instead of 0xe0000000.
17  */
18 
19 #define JAZZ_LOCAL_IO_SPACE	0xe0000000
20 
21 /*
22  * Revision numbers in PICA_ASIC_REVISION
23  *
24  * 0xf0000000 - Rev1
25  * 0xf0000001 - Rev2
26  * 0xf0000002 - Rev3
27  */
28 #define PICA_ASIC_REVISION	0xe0000008
29 
30 /*
31  * The segments of the seven segment LED are mapped
32  * to the control bits as follows:
33  *
34  *	   (7)
35  *	---------
36  *	|	|
37  *  (2) |	| (6)
38  *	|  (1)	|
39  *	---------
40  *	|	|
41  *  (3) |	| (5)
42  *	|  (4)	|
43  *	--------- . (0)
44  */
45 #define PICA_LED		0xe000f000
46 
47 /*
48  * Some characters for the LED control registers
49  * The original Mips machines seem to have a LED display
50  * with integrated decoder while the Acer machines can
51  * control each of the seven segments and the dot independently.
52  * It's only a toy, anyway...
53  */
54 #define LED_DOT			0x01
55 #define LED_SPACE		0x00
56 #define LED_0			0xfc
57 #define LED_1			0x60
58 #define LED_2			0xda
59 #define LED_3			0xf2
60 #define LED_4			0x66
61 #define LED_5			0xb6
62 #define LED_6			0xbe
63 #define LED_7			0xe0
64 #define LED_8			0xfe
65 #define LED_9			0xf6
66 #define LED_A			0xee
67 #define LED_b			0x3e
68 #define LED_C			0x9c
69 #define LED_d			0x7a
70 #define LED_E			0x9e
71 #define LED_F			0x8e
72 
73 #ifndef __ASSEMBLY__
74 
pica_set_led(unsigned int bits)75 static __inline__ void pica_set_led(unsigned int bits)
76 {
77 	volatile unsigned int *led_register = (unsigned int *) PICA_LED;
78 
79 	*led_register = bits;
80 }
81 
82 #endif /* !__ASSEMBLY__ */
83 
84 /*
85  * Base address of the Sonic Ethernet adapter in Jazz machines.
86  */
87 #define JAZZ_ETHERNET_BASE  0xe0001000
88 
89 /*
90  * Base address of the 53C94 SCSI hostadapter in Jazz machines.
91  */
92 #define JAZZ_SCSI_BASE		0xe0002000
93 
94 /*
95  * i8042 keyboard controller for JAZZ and PICA chipsets.
96  * This address is just a guess and seems to differ from
97  * other mips machines such as RC3xxx...
98  */
99 #define JAZZ_KEYBOARD_ADDRESS	0xe0005000
100 #define JAZZ_KEYBOARD_DATA	0xe0005000
101 #define JAZZ_KEYBOARD_COMMAND	0xe0005001
102 
103 #ifndef __ASSEMBLY__
104 
105 typedef struct {
106 	unsigned char data;
107 	unsigned char command;
108 } jazz_keyboard_hardware;
109 
110 #define jazz_kh ((keyboard_hardware *) JAZZ_KEYBOARD_ADDRESS)
111 
112 typedef struct {
113 	unsigned char pad0[3];
114 	unsigned char data;
115 	unsigned char pad1[3];
116 	unsigned char command;
117 } mips_keyboard_hardware;
118 
119 /*
120  * For now. Needs to be changed for RC3xxx support. See below.
121  */
122 #define keyboard_hardware	jazz_keyboard_hardware
123 
124 #endif /* !__ASSEMBLY__ */
125 
126 /*
127  * i8042 keyboard controller for most other Mips machines.
128  */
129 #define MIPS_KEYBOARD_ADDRESS	0xb9005000
130 #define MIPS_KEYBOARD_DATA	0xb9005003
131 #define MIPS_KEYBOARD_COMMAND	0xb9005007
132 
133 /*
134  * Serial and parallel ports (WD 16C552) on the Mips JAZZ
135  */
136 #define JAZZ_SERIAL1_BASE	(unsigned int)0xe0006000
137 #define JAZZ_SERIAL2_BASE	(unsigned int)0xe0007000
138 #define JAZZ_PARALLEL_BASE	(unsigned int)0xe0008000
139 
140 /*
141  * Dummy Device Address. Used in jazzdma.c
142  */
143 #define JAZZ_DUMMY_DEVICE	0xe000d000
144 
145 /*
146  * JAZZ timer registers and interrupt no.
147  * Note that the hardware timer interrupt is actually on
148  * cpu level 6, but to keep compatibility with PC stuff
149  * it is remapped to vector 0. See arch/mips/kernel/entry.S.
150  */
151 #define JAZZ_TIMER_INTERVAL	0xe0000228
152 #define JAZZ_TIMER_REGISTER	0xe0000230
153 
154 /*
155  * DRAM configuration register
156  */
157 #ifndef __ASSEMBLY__
158 #ifdef __MIPSEL__
159 typedef struct {
160 	unsigned int bank2 : 3;
161 	unsigned int bank1 : 3;
162 	unsigned int mem_bus_width : 1;
163 	unsigned int reserved2 : 1;
164 	unsigned int page_mode : 1;
165 	unsigned int reserved1 : 23;
166 } dram_configuration;
167 #else /* defined (__MIPSEB__) */
168 typedef struct {
169 	unsigned int reserved1 : 23;
170 	unsigned int page_mode : 1;
171 	unsigned int reserved2 : 1;
172 	unsigned int mem_bus_width : 1;
173 	unsigned int bank1 : 3;
174 	unsigned int bank2 : 3;
175 } dram_configuration;
176 #endif
177 #endif /* !__ASSEMBLY__ */
178 
179 #define PICA_DRAM_CONFIG	0xe00fffe0
180 
181 /*
182  * JAZZ interrupt control registers
183  */
184 #define JAZZ_IO_IRQ_SOURCE	0xe0010000
185 #define JAZZ_IO_IRQ_ENABLE	0xe0010002
186 
187 /*
188  * JAZZ Interrupt Level definitions
189  *
190  * This is somewhat broken.  For reasons which nobody can remember anymore
191  * we remap the Jazz interrupts to the usual ISA style interrupt numbers.
192  */
193 #define JAZZ_IRQ_START		24
194 #define JAZZ_IRQ_END		(24 + 9)
195 #define JAZZ_PARALLEL_IRQ	(JAZZ_IRQ_START + 0)
196 #define JAZZ_FLOPPY_IRQ		(JAZZ_IRQ_START + 1)
197 #define JAZZ_SOUND_IRQ		(JAZZ_IRQ_START + 2)
198 #define JAZZ_VIDEO_IRQ		(JAZZ_IRQ_START + 3)
199 #define JAZZ_ETHERNET_IRQ	(JAZZ_IRQ_START + 4)
200 #define JAZZ_SCSI_IRQ		(JAZZ_IRQ_START + 5)
201 #define JAZZ_KEYBOARD_IRQ	(JAZZ_IRQ_START + 6)
202 #define JAZZ_MOUSE_IRQ		(JAZZ_IRQ_START + 7)
203 #define JAZZ_SERIAL1_IRQ	(JAZZ_IRQ_START + 8)
204 #define JAZZ_SERIAL2_IRQ	(JAZZ_IRQ_START + 9)
205 
206 #define JAZZ_TIMER_IRQ		(MIPS_CPU_IRQ_BASE+6)
207 
208 
209 /*
210  * JAZZ DMA Channels
211  * Note: Channels 4...7 are not used with respect to the Acer PICA-61
212  * chipset which does not provide these DMA channels.
213  */
214 #define JAZZ_SCSI_DMA		0	       /* SCSI */
215 #define JAZZ_FLOPPY_DMA		1	       /* FLOPPY */
216 #define JAZZ_AUDIOL_DMA		2	       /* AUDIO L */
217 #define JAZZ_AUDIOR_DMA		3	       /* AUDIO R */
218 
219 /*
220  * JAZZ R4030 MCT_ADR chip (DMA controller)
221  * Note: Virtual Addresses !
222  */
223 #define JAZZ_R4030_CONFIG	0xE0000000	/* R4030 config register */
224 #define JAZZ_R4030_REVISION	0xE0000008	/* same as PICA_ASIC_REVISION */
225 #define JAZZ_R4030_INV_ADDR	0xE0000010	/* Invalid Address register */
226 
227 #define JAZZ_R4030_TRSTBL_BASE	0xE0000018	/* Translation Table Base */
228 #define JAZZ_R4030_TRSTBL_LIM	0xE0000020	/* Translation Table Limit */
229 #define JAZZ_R4030_TRSTBL_INV	0xE0000028	/* Translation Table Invalidate */
230 
231 #define JAZZ_R4030_CACHE_MTNC	0xE0000030	/* Cache Maintenance */
232 #define JAZZ_R4030_R_FAIL_ADDR	0xE0000038	/* Remote Failed Address */
233 #define JAZZ_R4030_M_FAIL_ADDR	0xE0000040	/* Memory Failed Address */
234 
235 #define JAZZ_R4030_CACHE_PTAG	0xE0000048	/* I/O Cache Physical Tag */
236 #define JAZZ_R4030_CACHE_LTAG	0xE0000050	/* I/O Cache Logical Tag */
237 #define JAZZ_R4030_CACHE_BMASK	0xE0000058	/* I/O Cache Byte Mask */
238 #define JAZZ_R4030_CACHE_BWIN	0xE0000060	/* I/O Cache Buffer Window */
239 
240 /*
241  * Remote Speed Registers.
242  *
243  *  0: free,	  1: Ethernet,	2: SCSI,      3: Floppy,
244  *  4: RTC,	  5: Kb./Mouse	6: serial 1,  7: serial 2,
245  *  8: parallel,  9: NVRAM,    10: CPU,	     11: PROM,
246  * 12: reserved, 13: free,     14: 7seg LED, 15: ???
247  */
248 #define JAZZ_R4030_REM_SPEED	0xE0000070	/* 16 Remote Speed Registers */
249 						/* 0xE0000070,78,80... 0xE00000E8 */
250 #define JAZZ_R4030_IRQ_ENABLE	0xE00000E8	/* Internal Interrupt Enable */
251 #define JAZZ_R4030_INVAL_ADDR	0xE0000010	/* Invalid address Register */
252 #define JAZZ_R4030_IRQ_SOURCE	0xE0000200	/* Interrupt Source Register */
253 #define JAZZ_R4030_I386_ERROR	0xE0000208	/* i386/EISA Bus Error */
254 
255 /*
256  * Virtual (E)ISA controller address
257  */
258 #define JAZZ_EISA_IRQ_ACK	0xE0000238	/* EISA interrupt acknowledge */
259 
260 /*
261  * Access the R4030 DMA and I/O Controller
262  */
263 #ifndef __ASSEMBLY__
264 
r4030_delay(void)265 static inline void r4030_delay(void)
266 {
267 __asm__ __volatile__(
268 	".set\tnoreorder\n\t"
269 	"nop\n\t"
270 	"nop\n\t"
271 	"nop\n\t"
272 	"nop\n\t"
273 	".set\treorder");
274 }
275 
r4030_read_reg16(unsigned long addr)276 static inline unsigned short r4030_read_reg16(unsigned long addr)
277 {
278 	unsigned short ret = *((volatile unsigned short *)addr);
279 	r4030_delay();
280 	return ret;
281 }
282 
r4030_read_reg32(unsigned long addr)283 static inline unsigned int r4030_read_reg32(unsigned long addr)
284 {
285 	unsigned int ret = *((volatile unsigned int *)addr);
286 	r4030_delay();
287 	return ret;
288 }
289 
r4030_write_reg16(unsigned long addr,unsigned val)290 static inline void r4030_write_reg16(unsigned long addr, unsigned val)
291 {
292 	*((volatile unsigned short *)addr) = val;
293 	r4030_delay();
294 }
295 
r4030_write_reg32(unsigned long addr,unsigned val)296 static inline void r4030_write_reg32(unsigned long addr, unsigned val)
297 {
298 	*((volatile unsigned int *)addr) = val;
299 	r4030_delay();
300 }
301 
302 #endif /* !__ASSEMBLY__ */
303 
304 #define JAZZ_FDC_BASE	0xe0003000
305 #define JAZZ_RTC_BASE	0xe0004000
306 #define JAZZ_PORT_BASE	0xe2000000
307 
308 #define JAZZ_EISA_BASE	0xe3000000
309 
310 #endif /* __ASM_JAZZ_H */
311