config.c

  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
 52u_long atari_mch_cookie;
 53EXPORT_SYMBOL(atari_mch_cookie);
 54
 55u_long atari_mch_type;
 56EXPORT_SYMBOL(atari_mch_type);
 57
 58struct atari_hw_present atari_hw_present;
 59EXPORT_SYMBOL(atari_hw_present);
 60
 61u_long atari_switches;
 62EXPORT_SYMBOL(atari_switches);
 63
 64int atari_dont_touch_floppy_select;
 65EXPORT_SYMBOL(atari_dont_touch_floppy_select);
 66
 67int atari_rtc_year_offset;
 68
 69/* local function prototypes */
 70static void atari_reset(void);
 71static void atari_get_model(char *model);
 72static void atari_get_hardware_list(struct seq_file *m);
 73#ifdef CONFIG_HEARTBEAT
 74static 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
 85static 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
120int __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. */
141static 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
180early_param("switches", atari_switches_setup);
181
182
183    /*
184     *  Setup the Atari configuration info
185     */
186
187void __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
437static 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
484static 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
567static 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
603static 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)
654static 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
667static 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
682static 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
696static 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 ) */
718static 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
735static 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
745static 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
761static 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
776static 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
791static 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 ) */
813static 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
830static 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
840static 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)
847static 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
855static 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
870static 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
875static 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
929arch_initcall(atari_platform_init);