1 /*
2 * linux/arch/m68k/atari/config.c
3 *
4 * Copyright (C) 1994 Bjoern Brauel
5 *
6 * 5/2/94 Roman Hodek:
7 * Added setting of time_adj to get a better clock.
8 *
9 * 5/14/94 Roman Hodek:
10 * gettod() for TT
11 *
12 * 5/15/94 Roman Hodek:
13 * hard_reset_now() for Atari (and others?)
14 *
15 * 94/12/30 Andreas Schwab:
16 * atari_sched_init fixed to get precise clock.
17 *
18 * This file is subject to the terms and conditions of the GNU General Public
19 * License. See the file COPYING in the main directory of this archive
20 * for more details.
21 */
22
23 /*
24 * Miscellaneous atari stuff
25 */
26
27 #include <linux/types.h>
28 #include <linux/mm.h>
29 #include <linux/seq_file.h>
30 #include <linux/console.h>
31 #include <linux/init.h>
32 #include <linux/delay.h>
33 #include <linux/ioport.h>
34 #include <linux/platform_device.h>
35 #include <linux/usb/isp116x.h>
36 #include <linux/module.h>
37
38 #include <asm/bootinfo.h>
39 #include <asm/bootinfo-atari.h>
40 #include <asm/byteorder.h>
41 #include <asm/setup.h>
42 #include <asm/atarihw.h>
43 #include <asm/atariints.h>
44 #include <asm/atari_stram.h>
45 #include <asm/machdep.h>
46 #include <asm/hwtest.h>
47 #include <asm/io.h>
48 #include <asm/config.h>
49
50 #include "atari.h"
51
52 u_long atari_mch_cookie;
53 EXPORT_SYMBOL(atari_mch_cookie);
54
55 u_long atari_mch_type;
56 EXPORT_SYMBOL(atari_mch_type);
57
58 struct atari_hw_present atari_hw_present;
59 EXPORT_SYMBOL(atari_hw_present);
60
61 u_long atari_switches;
62 EXPORT_SYMBOL(atari_switches);
63
64 int atari_dont_touch_floppy_select;
65 EXPORT_SYMBOL(atari_dont_touch_floppy_select);
66
67 int atari_rtc_year_offset;
68
69 /* local function prototypes */
70 static void atari_reset(void);
71 static void atari_get_model(char *model);
72 static void atari_get_hardware_list(struct seq_file *m);
73 #ifdef CONFIG_HEARTBEAT
74 static void atari_heartbeat(int on);
75 #endif
76
77 /* ++roman: This is a more elaborate test for an SCC chip, since the plain
78 * Medusa board generates DTACK at the SCC's standard addresses, but a SCC
79 * board in the Medusa is possible. Also, the addresses where the ST_ESCC
80 * resides generate DTACK without the chip, too.
81 * The method is to write values into the interrupt vector register, that
82 * should be readable without trouble (from channel A!).
83 */
84
scc_test(volatile char * ctla)85 static int __init scc_test(volatile char *ctla)
86 {
87 if (!hwreg_present(ctla))
88 return 0;
89 MFPDELAY();
90
91 *ctla = 2;
92 MFPDELAY();
93 *ctla = 0x40;
94 MFPDELAY();
95
96 *ctla = 2;
97 MFPDELAY();
98 if (*ctla != 0x40)
99 return 0;
100 MFPDELAY();
101
102 *ctla = 2;
103 MFPDELAY();
104 *ctla = 0x60;
105 MFPDELAY();
106
107 *ctla = 2;
108 MFPDELAY();
109 if (*ctla != 0x60)
110 return 0;
111
112 return 1;
113 }
114
115
116 /*
117 * Parse an Atari-specific record in the bootinfo
118 */
119
atari_parse_bootinfo(const struct bi_record * record)120 int __init atari_parse_bootinfo(const struct bi_record *record)
121 {
122 int unknown = 0;
123 const void *data = record->data;
124
125 switch (be16_to_cpu(record->tag)) {
126 case BI_ATARI_MCH_COOKIE:
127 atari_mch_cookie = be32_to_cpup(data);
128 break;
129 case BI_ATARI_MCH_TYPE:
130 atari_mch_type = be32_to_cpup(data);
131 break;
132 default:
133 unknown = 1;
134 break;
135 }
136 return unknown;
137 }
138
139
140 /* Parse the Atari-specific switches= option. */
atari_switches_setup(char * str)141 static int __init atari_switches_setup(char *str)
142 {
143 char switches[COMMAND_LINE_SIZE];
144 char *p;
145 int ovsc_shift;
146 char *args = switches;
147
148 if (!MACH_IS_ATARI)
149 return 0;
150
151 /* copy string to local array, strsep works destructively... */
152 strcpy(switches, str);
153 atari_switches = 0;
154
155 /* parse the options */
156 while ((p = strsep(&args, ",")) != NULL) {
157 if (!*p)
158 continue;
159 ovsc_shift = 0;
160 if (strncmp(p, "ov_", 3) == 0) {
161 p += 3;
162 ovsc_shift = ATARI_SWITCH_OVSC_SHIFT;
163 }
164
165 if (strcmp(p, "ikbd") == 0) {
166 /* RTS line of IKBD ACIA */
167 atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift;
168 } else if (strcmp(p, "midi") == 0) {
169 /* RTS line of MIDI ACIA */
170 atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift;
171 } else if (strcmp(p, "snd6") == 0) {
172 atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift;
173 } else if (strcmp(p, "snd7") == 0) {
174 atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift;
175 }
176 }
177 return 0;
178 }
179
180 early_param("switches", atari_switches_setup);
181
182
183 /*
184 * Setup the Atari configuration info
185 */
186
config_atari(void)187 void __init config_atari(void)
188 {
189 unsigned short tos_version;
190
191 memset(&atari_hw_present, 0, sizeof(atari_hw_present));
192
193 /* Change size of I/O space from 64KB to 4GB. */
194 ioport_resource.end = 0xFFFFFFFF;
195
196 mach_sched_init = atari_sched_init;
197 mach_init_IRQ = atari_init_IRQ;
198 mach_get_model = atari_get_model;
199 mach_get_hardware_list = atari_get_hardware_list;
200 mach_reset = atari_reset;
201 #if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
202 mach_beep = atari_mksound;
203 #endif
204 #ifdef CONFIG_HEARTBEAT
205 mach_heartbeat = atari_heartbeat;
206 #endif
207
208 /* Set switches as requested by the user */
209 if (atari_switches & ATARI_SWITCH_IKBD)
210 acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID;
211 if (atari_switches & ATARI_SWITCH_MIDI)
212 acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID;
213 if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) {
214 sound_ym.rd_data_reg_sel = 14;
215 sound_ym.wd_data = sound_ym.rd_data_reg_sel |
216 ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) |
217 ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0);
218 }
219
220 /* ++bjoern:
221 * Determine hardware present
222 */
223
224 pr_info("Atari hardware found:");
225 if (MACH_IS_MEDUSA) {
226 /* There's no Atari video hardware on the Medusa, but all the
227 * addresses below generate a DTACK so no bus error occurs! */
228 } else if (hwreg_present(f030_xreg)) {
229 ATARIHW_SET(VIDEL_SHIFTER);
230 pr_cont(" VIDEL");
231 /* This is a temporary hack: If there is Falcon video
232 * hardware, we assume that the ST-DMA serves SCSI instead of
233 * ACSI. In the future, there should be a better method for
234 * this...
235 */
236 ATARIHW_SET(ST_SCSI);
237 pr_cont(" STDMA-SCSI");
238 } else if (hwreg_present(tt_palette)) {
239 ATARIHW_SET(TT_SHIFTER);
240 pr_cont(" TT_SHIFTER");
241 } else if (hwreg_present(&shifter_st.bas_hi)) {
242 if (hwreg_present(&shifter_st.bas_lo) &&
243 (shifter_st.bas_lo = 0x0aau, shifter_st.bas_lo == 0x0aau)) {
244 ATARIHW_SET(EXTD_SHIFTER);
245 pr_cont(" EXTD_SHIFTER");
246 } else {
247 ATARIHW_SET(STND_SHIFTER);
248 pr_cont(" STND_SHIFTER");
249 }
250 }
251 if (hwreg_present(&st_mfp.par_dt_reg)) {
252 ATARIHW_SET(ST_MFP);
253 pr_cont(" ST_MFP");
254 }
255 if (hwreg_present(&tt_mfp.par_dt_reg)) {
256 ATARIHW_SET(TT_MFP);
257 pr_cont(" TT_MFP");
258 }
259 if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) {
260 ATARIHW_SET(SCSI_DMA);
261 pr_cont(" TT_SCSI_DMA");
262 }
263 /*
264 * The ST-DMA address registers aren't readable
265 * on all Medusas, so the test below may fail
266 */
267 if (MACH_IS_MEDUSA ||
268 (hwreg_present(&st_dma.dma_vhi) &&
269 (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) &&
270 st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa &&
271 (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) &&
272 st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) {
273 ATARIHW_SET(EXTD_DMA);
274 pr_cont(" EXTD_DMA");
275 }
276 if (hwreg_present(&tt_scsi.scsi_data)) {
277 ATARIHW_SET(TT_SCSI);
278 pr_cont(" TT_SCSI");
279 }
280 if (hwreg_present(&sound_ym.rd_data_reg_sel)) {
281 ATARIHW_SET(YM_2149);
282 pr_cont(" YM2149");
283 }
284 if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) {
285 ATARIHW_SET(PCM_8BIT);
286 pr_cont(" PCM");
287 }
288 if (hwreg_present(&falcon_codec.unused5)) {
289 ATARIHW_SET(CODEC);
290 pr_cont(" CODEC");
291 }
292 if (hwreg_present(&dsp56k_host_interface.icr)) {
293 ATARIHW_SET(DSP56K);
294 pr_cont(" DSP56K");
295 }
296 if (hwreg_present(&tt_scc_dma.dma_ctrl) &&
297 #if 0
298 /* This test sucks! Who knows some better? */
299 (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) &&
300 (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0)
301 #else
302 !MACH_IS_MEDUSA
303 #endif
304 ) {
305 ATARIHW_SET(SCC_DMA);
306 pr_cont(" SCC_DMA");
307 }
308 if (scc_test(&atari_scc.cha_a_ctrl)) {
309 ATARIHW_SET(SCC);
310 pr_cont(" SCC");
311 }
312 if (scc_test(&st_escc.cha_b_ctrl)) {
313 ATARIHW_SET(ST_ESCC);
314 pr_cont(" ST_ESCC");
315 }
316 if (hwreg_present(&tt_scu.sys_mask)) {
317 ATARIHW_SET(SCU);
318 /* Assume a VME bus if there's a SCU */
319 ATARIHW_SET(VME);
320 pr_cont(" VME SCU");
321 }
322 if (hwreg_present((void *)(0xffff9210))) {
323 ATARIHW_SET(ANALOG_JOY);
324 pr_cont(" ANALOG_JOY");
325 }
326 if (hwreg_present(blitter.halftone)) {
327 ATARIHW_SET(BLITTER);
328 pr_cont(" BLITTER");
329 }
330 if (hwreg_present((void *)0xfff00039)) {
331 ATARIHW_SET(IDE);
332 pr_cont(" IDE");
333 }
334 #if 1 /* This maybe wrong */
335 if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) &&
336 hwreg_present(&tt_microwire.mask) &&
337 (tt_microwire.mask = 0x7ff,
338 udelay(1),
339 tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR,
340 udelay(1),
341 tt_microwire.data != 0)) {
342 ATARIHW_SET(MICROWIRE);
343 while (tt_microwire.mask != 0x7ff)
344 ;
345 pr_cont(" MICROWIRE");
346 }
347 #endif
348 if (hwreg_present(&tt_rtc.regsel)) {
349 ATARIHW_SET(TT_CLK);
350 pr_cont(" TT_CLK");
351 mach_hwclk = atari_tt_hwclk;
352 }
353 if (hwreg_present(&mste_rtc.sec_ones)) {
354 ATARIHW_SET(MSTE_CLK);
355 pr_cont(" MSTE_CLK");
356 mach_hwclk = atari_mste_hwclk;
357 }
358 if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) &&
359 hwreg_write(&dma_wd.fdc_speed, 0)) {
360 ATARIHW_SET(FDCSPEED);
361 pr_cont(" FDC_SPEED");
362 }
363 if (!ATARIHW_PRESENT(ST_SCSI)) {
364 ATARIHW_SET(ACSI);
365 pr_cont(" ACSI");
366 }
367 pr_cont("\n");
368
369 if (CPU_IS_040_OR_060)
370 /* Now it seems to be safe to turn of the tt0 transparent
371 * translation (the one that must not be turned off in
372 * head.S...)
373 */
374 asm volatile ("\n"
375 " moveq #0,%%d0\n"
376 " .chip 68040\n"
377 " movec %%d0,%%itt0\n"
378 " movec %%d0,%%dtt0\n"
379 " .chip 68k"
380 : /* no outputs */
381 : /* no inputs */
382 : "d0");
383
384 /* allocator for memory that must reside in st-ram */
385 atari_stram_init();
386
387 /* Set up a mapping for the VMEbus address region:
388 *
389 * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff
390 * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at
391 * 0xfe000000 virt., because this can be done with a single
392 * transparent translation. On the 68040, lots of often unused
393 * page tables would be needed otherwise. On a MegaSTE or similar,
394 * the highest byte is stripped off by hardware due to the 24 bit
395 * design of the bus.
396 */
397
398 if (CPU_IS_020_OR_030) {
399 unsigned long tt1_val;
400 tt1_val = 0xfe008543; /* Translate 0xfexxxxxx, enable, cache
401 * inhibit, read and write, FDC mask = 3,
402 * FDC val = 4 -> Supervisor only */
403 asm volatile ("\n"
404 " .chip 68030\n"
405 " pmove %0,%/tt1\n"
406 " .chip 68k"
407 : : "m" (tt1_val));
408 } else {
409 asm volatile ("\n"
410 " .chip 68040\n"
411 " movec %0,%%itt1\n"
412 " movec %0,%%dtt1\n"
413 " .chip 68k"
414 :
415 : "d" (0xfe00a040)); /* Translate 0xfexxxxxx, enable,
416 * supervisor only, non-cacheable/
417 * serialized, writable */
418
419 }
420
421 /* Fetch tos version at Physical 2 */
422 /*
423 * We my not be able to access this address if the kernel is
424 * loaded to st ram, since the first page is unmapped. On the
425 * Medusa this is always the case and there is nothing we can do
426 * about this, so we just assume the smaller offset. For the TT
427 * we use the fact that in head.S we have set up a mapping
428 * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible
429 * in the last 16MB of the address space.
430 */
431 tos_version = (MACH_IS_MEDUSA) ?
432 0xfff : *(unsigned short *)0xff000002;
433 atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68;
434 }
435
436 #ifdef CONFIG_HEARTBEAT
atari_heartbeat(int on)437 static void atari_heartbeat(int on)
438 {
439 unsigned char tmp;
440 unsigned long flags;
441
442 if (atari_dont_touch_floppy_select)
443 return;
444
445 local_irq_save(flags);
446 sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */
447 tmp = sound_ym.rd_data_reg_sel;
448 sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02);
449 local_irq_restore(flags);
450 }
451 #endif
452
453 /* ++roman:
454 *
455 * This function does a reset on machines that lack the ability to
456 * assert the processor's _RESET signal somehow via hardware. It is
457 * based on the fact that you can find the initial SP and PC values
458 * after a reset at physical addresses 0 and 4. This works pretty well
459 * for Atari machines, since the lowest 8 bytes of physical memory are
460 * really ROM (mapped by hardware). For other 680x0 machines: don't
461 * know if it works...
462 *
463 * To get the values at addresses 0 and 4, the MMU better is turned
464 * off first. After that, we have to jump into physical address space
465 * (the PC before the pmove statement points to the virtual address of
466 * the code). Getting that physical address is not hard, but the code
467 * becomes a bit complex since I've tried to ensure that the jump
468 * statement after the pmove is in the cache already (otherwise the
469 * processor can't fetch it!). For that, the code first jumps to the
470 * jump statement with the (virtual) address of the pmove section in
471 * an address register . The jump statement is surely in the cache
472 * now. After that, that physical address of the reset code is loaded
473 * into the same address register, pmove is done and the same jump
474 * statements goes to the reset code. Since there are not many
475 * statements between the two jumps, I hope it stays in the cache.
476 *
477 * The C code makes heavy use of the GCC features that you can get the
478 * address of a C label. No hope to compile this with another compiler
479 * than GCC!
480 */
481
482 /* ++andreas: no need for complicated code, just depend on prefetch */
483
atari_reset(void)484 static void atari_reset(void)
485 {
486 long tc_val = 0;
487 long reset_addr;
488
489 /*
490 * On the Medusa, phys. 0x4 may contain garbage because it's no
491 * ROM. See above for explanation why we cannot use PTOV(4).
492 */
493 reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 :
494 *(unsigned long *) 0xff000004;
495
496 /* reset ACIA for switch off OverScan, if it's active */
497 if (atari_switches & ATARI_SWITCH_OVSC_IKBD)
498 acia.key_ctrl = ACIA_RESET;
499 if (atari_switches & ATARI_SWITCH_OVSC_MIDI)
500 acia.mid_ctrl = ACIA_RESET;
501
502 /* processor independent: turn off interrupts and reset the VBR;
503 * the caches must be left enabled, else prefetching the final jump
504 * instruction doesn't work.
505 */
506 local_irq_disable();
507 asm volatile ("movec %0,%%vbr"
508 : : "d" (0));
509
510 if (CPU_IS_040_OR_060) {
511 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
512 if (CPU_IS_060) {
513 /* 68060: clear PCR to turn off superscalar operation */
514 asm volatile ("\n"
515 " .chip 68060\n"
516 " movec %0,%%pcr\n"
517 " .chip 68k"
518 : : "d" (0));
519 }
520
521 asm volatile ("\n"
522 " move.l %0,%%d0\n"
523 " and.l #0xff000000,%%d0\n"
524 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
525 " .chip 68040\n"
526 " movec %%d0,%%itt0\n"
527 " movec %%d0,%%dtt0\n"
528 " .chip 68k\n"
529 " jmp %0@"
530 : : "a" (jmp_addr040)
531 : "d0");
532 jmp_addr_label040:
533 asm volatile ("\n"
534 " moveq #0,%%d0\n"
535 " nop\n"
536 " .chip 68040\n"
537 " cinva %%bc\n"
538 " nop\n"
539 " pflusha\n"
540 " nop\n"
541 " movec %%d0,%%tc\n"
542 " nop\n"
543 /* the following setup of transparent translations is needed on the
544 * Afterburner040 to successfully reboot. Other machines shouldn't
545 * care about a different tt regs setup, they also didn't care in
546 * the past that the regs weren't turned off. */
547 " move.l #0xffc000,%%d0\n" /* whole insn space cacheable */
548 " movec %%d0,%%itt0\n"
549 " movec %%d0,%%itt1\n"
550 " or.w #0x40,%/d0\n" /* whole data space non-cacheable/ser. */
551 " movec %%d0,%%dtt0\n"
552 " movec %%d0,%%dtt1\n"
553 " .chip 68k\n"
554 " jmp %0@"
555 : /* no outputs */
556 : "a" (reset_addr)
557 : "d0");
558 } else
559 asm volatile ("\n"
560 " pmove %0,%%tc\n"
561 " jmp %1@"
562 : /* no outputs */
563 : "m" (tc_val), "a" (reset_addr));
564 }
565
566
atari_get_model(char * model)567 static void atari_get_model(char *model)
568 {
569 strcpy(model, "Atari ");
570 switch (atari_mch_cookie >> 16) {
571 case ATARI_MCH_ST:
572 if (ATARIHW_PRESENT(MSTE_CLK))
573 strcat(model, "Mega ST");
574 else
575 strcat(model, "ST");
576 break;
577 case ATARI_MCH_STE:
578 if (MACH_IS_MSTE)
579 strcat(model, "Mega STE");
580 else
581 strcat(model, "STE");
582 break;
583 case ATARI_MCH_TT:
584 if (MACH_IS_MEDUSA)
585 /* Medusa has TT _MCH cookie */
586 strcat(model, "Medusa");
587 else
588 strcat(model, "TT");
589 break;
590 case ATARI_MCH_FALCON:
591 strcat(model, "Falcon");
592 if (MACH_IS_AB40)
593 strcat(model, " (with Afterburner040)");
594 break;
595 default:
596 sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)",
597 atari_mch_cookie);
598 break;
599 }
600 }
601
602
atari_get_hardware_list(struct seq_file * m)603 static void atari_get_hardware_list(struct seq_file *m)
604 {
605 int i;
606
607 for (i = 0; i < m68k_num_memory; i++)
608 seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n",
609 m68k_memory[i].size >> 20, m68k_memory[i].addr,
610 (m68k_memory[i].addr & 0xff000000 ?
611 "alternate RAM" : "ST-RAM"));
612
613 #define ATARIHW_ANNOUNCE(name, str) \
614 if (ATARIHW_PRESENT(name)) \
615 seq_printf(m, "\t%s\n", str)
616
617 seq_puts(m, "Detected hardware:\n");
618 ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter");
619 ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter");
620 ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter");
621 ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter");
622 ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator");
623 ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound");
624 ATARIHW_ANNOUNCE(CODEC, "CODEC Sound");
625 ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)");
626 ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)");
627 ATARIHW_ANNOUNCE(ACSI, "ACSI Interface");
628 ATARIHW_ANNOUNCE(IDE, "IDE Interface");
629 ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC");
630 ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901");
631 ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901");
632 ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530");
633 ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230");
634 ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface");
635 ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface");
636 ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)");
637 ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)");
638 ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380");
639 ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC");
640 ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A");
641 ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15");
642 ATARIHW_ANNOUNCE(SCU, "System Control Unit");
643 ATARIHW_ANNOUNCE(BLITTER, "Blitter");
644 ATARIHW_ANNOUNCE(VME, "VME Bus");
645 ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor");
646 }
647
648 /*
649 * MSch: initial platform device support for Atari,
650 * required for EtherNAT/EtherNEC/NetUSBee drivers
651 */
652
653 #if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC)
isp1160_delay(struct device * dev,int delay)654 static void isp1160_delay(struct device *dev, int delay)
655 {
656 ndelay(delay);
657 }
658 #endif
659
660 #ifdef CONFIG_ATARI_ETHERNAT
661 /*
662 * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver
663 */
664
665 #define ATARI_ETHERNAT_IRQ 140
666
667 static struct resource smc91x_resources[] = {
668 [0] = {
669 .name = "smc91x-regs",
670 .start = ATARI_ETHERNAT_PHYS_ADDR,
671 .end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff,
672 .flags = IORESOURCE_MEM,
673 },
674 [1] = {
675 .name = "smc91x-irq",
676 .start = ATARI_ETHERNAT_IRQ,
677 .end = ATARI_ETHERNAT_IRQ,
678 .flags = IORESOURCE_IRQ,
679 },
680 };
681
682 static struct platform_device smc91x_device = {
683 .name = "smc91x",
684 .id = -1,
685 .num_resources = ARRAY_SIZE(smc91x_resources),
686 .resource = smc91x_resources,
687 };
688
689 /*
690 * ISP 1160 - using the isp116x-hcd module
691 */
692
693 #define ATARI_USB_PHYS_ADDR 0x80000012
694 #define ATARI_USB_IRQ 139
695
696 static struct resource isp1160_resources[] = {
697 [0] = {
698 .name = "isp1160-data",
699 .start = ATARI_USB_PHYS_ADDR,
700 .end = ATARI_USB_PHYS_ADDR + 0x1,
701 .flags = IORESOURCE_MEM,
702 },
703 [1] = {
704 .name = "isp1160-regs",
705 .start = ATARI_USB_PHYS_ADDR + 0x4,
706 .end = ATARI_USB_PHYS_ADDR + 0x5,
707 .flags = IORESOURCE_MEM,
708 },
709 [2] = {
710 .name = "isp1160-irq",
711 .start = ATARI_USB_IRQ,
712 .end = ATARI_USB_IRQ,
713 .flags = IORESOURCE_IRQ,
714 },
715 };
716
717 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
718 static struct isp116x_platform_data isp1160_platform_data = {
719 /* Enable internal resistors on downstream ports */
720 .sel15Kres = 1,
721 /* On-chip overcurrent protection */
722 .oc_enable = 1,
723 /* INT output polarity */
724 .int_act_high = 1,
725 /* INT edge or level triggered */
726 .int_edge_triggered = 0,
727
728 /* WAKEUP pin connected - NOT SUPPORTED */
729 /* .remote_wakeup_connected = 0, */
730 /* Wakeup by devices on usb bus enabled */
731 .remote_wakeup_enable = 0,
732 .delay = isp1160_delay,
733 };
734
735 static struct platform_device isp1160_device = {
736 .name = "isp116x-hcd",
737 .id = 0,
738 .num_resources = ARRAY_SIZE(isp1160_resources),
739 .resource = isp1160_resources,
740 .dev = {
741 .platform_data = &isp1160_platform_data,
742 },
743 };
744
745 static struct platform_device *atari_ethernat_devices[] __initdata = {
746 &smc91x_device,
747 &isp1160_device
748 };
749 #endif /* CONFIG_ATARI_ETHERNAT */
750
751 #ifdef CONFIG_ATARI_ETHERNEC
752 /*
753 * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset,
754 * handled by ne.c driver
755 */
756
757 #define ATARI_ETHERNEC_PHYS_ADDR 0xfffa0000
758 #define ATARI_ETHERNEC_BASE 0x300
759 #define ATARI_ETHERNEC_IRQ IRQ_MFP_TIMER1
760
761 static struct resource rtl8019_resources[] = {
762 [0] = {
763 .name = "rtl8019-regs",
764 .start = ATARI_ETHERNEC_BASE,
765 .end = ATARI_ETHERNEC_BASE + 0x20 - 1,
766 .flags = IORESOURCE_IO,
767 },
768 [1] = {
769 .name = "rtl8019-irq",
770 .start = ATARI_ETHERNEC_IRQ,
771 .end = ATARI_ETHERNEC_IRQ,
772 .flags = IORESOURCE_IRQ,
773 },
774 };
775
776 static struct platform_device rtl8019_device = {
777 .name = "ne",
778 .id = -1,
779 .num_resources = ARRAY_SIZE(rtl8019_resources),
780 .resource = rtl8019_resources,
781 };
782
783 /*
784 * NetUSBee: ISP1160 USB host adapter via ROM-port adapter
785 */
786
787 #define ATARI_NETUSBEE_PHYS_ADDR 0xfffa8000
788 #define ATARI_NETUSBEE_BASE 0x340
789 #define ATARI_NETUSBEE_IRQ IRQ_MFP_TIMER2
790
791 static struct resource netusbee_resources[] = {
792 [0] = {
793 .name = "isp1160-data",
794 .start = ATARI_NETUSBEE_BASE,
795 .end = ATARI_NETUSBEE_BASE + 0x1,
796 .flags = IORESOURCE_MEM,
797 },
798 [1] = {
799 .name = "isp1160-regs",
800 .start = ATARI_NETUSBEE_BASE + 0x20,
801 .end = ATARI_NETUSBEE_BASE + 0x21,
802 .flags = IORESOURCE_MEM,
803 },
804 [2] = {
805 .name = "isp1160-irq",
806 .start = ATARI_NETUSBEE_IRQ,
807 .end = ATARI_NETUSBEE_IRQ,
808 .flags = IORESOURCE_IRQ,
809 },
810 };
811
812 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
813 static struct isp116x_platform_data netusbee_platform_data = {
814 /* Enable internal resistors on downstream ports */
815 .sel15Kres = 1,
816 /* On-chip overcurrent protection */
817 .oc_enable = 1,
818 /* INT output polarity */
819 .int_act_high = 1,
820 /* INT edge or level triggered */
821 .int_edge_triggered = 0,
822
823 /* WAKEUP pin connected - NOT SUPPORTED */
824 /* .remote_wakeup_connected = 0, */
825 /* Wakeup by devices on usb bus enabled */
826 .remote_wakeup_enable = 0,
827 .delay = isp1160_delay,
828 };
829
830 static struct platform_device netusbee_device = {
831 .name = "isp116x-hcd",
832 .id = 1,
833 .num_resources = ARRAY_SIZE(netusbee_resources),
834 .resource = netusbee_resources,
835 .dev = {
836 .platform_data = &netusbee_platform_data,
837 },
838 };
839
840 static struct platform_device *atari_netusbee_devices[] __initdata = {
841 &rtl8019_device,
842 &netusbee_device
843 };
844 #endif /* CONFIG_ATARI_ETHERNEC */
845
846 #if IS_ENABLED(CONFIG_ATARI_SCSI)
847 static const struct resource atari_scsi_st_rsrc[] __initconst = {
848 {
849 .flags = IORESOURCE_IRQ,
850 .start = IRQ_MFP_FSCSI,
851 .end = IRQ_MFP_FSCSI,
852 },
853 };
854
855 static const struct resource atari_scsi_tt_rsrc[] __initconst = {
856 {
857 .flags = IORESOURCE_IRQ,
858 .start = IRQ_TT_MFP_SCSI,
859 .end = IRQ_TT_MFP_SCSI,
860 },
861 };
862 #endif
863
864 /*
865 * Falcon IDE interface
866 */
867
868 #define FALCON_IDE_BASE 0xfff00000
869
870 static const struct resource atari_falconide_rsrc[] __initconst = {
871 DEFINE_RES_MEM(FALCON_IDE_BASE, 0x38),
872 DEFINE_RES_MEM(FALCON_IDE_BASE + 0x38, 2),
873 };
874
atari_platform_init(void)875 static int __init atari_platform_init(void)
876 {
877 struct platform_device *pdev;
878 int rv = 0;
879
880 if (!MACH_IS_ATARI)
881 return -ENODEV;
882
883 #ifdef CONFIG_ATARI_ETHERNAT
884 {
885 unsigned char *enatc_virt;
886 enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
887 if (hwreg_present(enatc_virt)) {
888 rv = platform_add_devices(atari_ethernat_devices,
889 ARRAY_SIZE(atari_ethernat_devices));
890 }
891 iounmap(enatc_virt);
892 }
893 #endif
894
895 #ifdef CONFIG_ATARI_ETHERNEC
896 {
897 int error;
898 unsigned char *enec_virt;
899 enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf);
900 if (hwreg_present(enec_virt)) {
901 error = platform_add_devices(atari_netusbee_devices,
902 ARRAY_SIZE(atari_netusbee_devices));
903 if (error && !rv)
904 rv = error;
905 }
906 iounmap(enec_virt);
907 }
908 #endif
909
910 #if IS_ENABLED(CONFIG_ATARI_SCSI)
911 if (ATARIHW_PRESENT(ST_SCSI))
912 platform_device_register_simple("atari_scsi", -1,
913 atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc));
914 else if (ATARIHW_PRESENT(TT_SCSI))
915 platform_device_register_simple("atari_scsi", -1,
916 atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc));
917 #endif
918
919 if (ATARIHW_PRESENT(IDE)) {
920 pdev = platform_device_register_simple("atari-falcon-ide", -1,
921 atari_falconide_rsrc, ARRAY_SIZE(atari_falconide_rsrc));
922 if (IS_ERR(pdev))
923 rv = PTR_ERR(pdev);
924 }
925
926 return rv;
927 }
928
929 arch_initcall(atari_platform_init);
930