arch/m68k/atari/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/vt_kern.h>
  37 #include <linux/module.h>
  38
  39 #include <asm/bootinfo.h>
  40 #include <asm/bootinfo-atari.h>
  41 #include <asm/byteorder.h>
  42 #include <asm/setup.h>
  43 #include <asm/atarihw.h>
  44 #include <asm/atariints.h>
  45 #include <asm/atari_stram.h>
  46 #include <asm/machdep.h>
  47 #include <asm/hwtest.h>
  48 #include <asm/io.h>
  49
  50 u_long atari_mch_cookie;
  51 EXPORT_SYMBOL(atari_mch_cookie);
  52
  53 u_long atari_mch_type;
  54 EXPORT_SYMBOL(atari_mch_type);
  55
  56 struct atari_hw_present atari_hw_present;
  57 EXPORT_SYMBOL(atari_hw_present);
  58
  59 u_long atari_switches;
  60 EXPORT_SYMBOL(atari_switches);
  61
  62 int atari_dont_touch_floppy_select;
  63 EXPORT_SYMBOL(atari_dont_touch_floppy_select);
  64
  65 int atari_rtc_year_offset;
  66
  67 /* local function prototypes */
  68 static void atari_reset(void);
  69 static void atari_get_model(char *model);
  70 static void atari_get_hardware_list(struct seq_file *m);
  71
  72 /* atari specific irq functions */
  73 extern void atari_init_IRQ (void);
  74 extern void atari_mksound(unsigned int count, unsigned int ticks);
  75 #ifdef CONFIG_HEARTBEAT
  76 static void atari_heartbeat(int on);
  77 #endif
  78
  79 /* atari specific timer functions (in time.c) */
  80 extern void atari_sched_init(irq_handler_t);
  81 extern u32 atari_gettimeoffset(void);
  82 extern int atari_mste_hwclk (int, struct rtc_time *);
  83 extern int atari_tt_hwclk (int, struct rtc_time *);
  84
  85 /* ++roman: This is a more elaborate test for an SCC chip, since the plain
  86  * Medusa board generates DTACK at the SCC's standard addresses, but a SCC
  87  * board in the Medusa is possible. Also, the addresses where the ST_ESCC
  88  * resides generate DTACK without the chip, too.
  89  * The method is to write values into the interrupt vector register, that
  90  * should be readable without trouble (from channel A!).
  91  */
  92
  93 static int __init scc_test(volatile char *ctla)
  94 {
  95         if (!hwreg_present(ctla))
  96                 return 0;
  97         MFPDELAY();
  98
  99         *ctla = 2;
 100         MFPDELAY();
 101         *ctla = 0x40;
 102         MFPDELAY();
 103
 104         *ctla = 2;
 105         MFPDELAY();
 106         if (*ctla != 0x40)
 107                 return 0;
 108         MFPDELAY();
 109
 110         *ctla = 2;
 111         MFPDELAY();
 112         *ctla = 0x60;
 113         MFPDELAY();
 114
 115         *ctla = 2;
 116         MFPDELAY();
 117         if (*ctla != 0x60)
 118                 return 0;
 119
 120         return 1;
 121 }
 122
 123
 124     /*
 125      *  Parse an Atari-specific record in the bootinfo
 126      */
 127
 128 int __init atari_parse_bootinfo(const struct bi_record *record)
 129 {
 130         int unknown = 0;
 131         const void *data = record->data;
 132
 133         switch (be16_to_cpu(record->tag)) {
 134         case BI_ATARI_MCH_COOKIE:
 135                 atari_mch_cookie = be32_to_cpup(data);
 136                 break;
 137         case BI_ATARI_MCH_TYPE:
 138                 atari_mch_type = be32_to_cpup(data);
 139                 break;
 140         default:
 141                 unknown = 1;
 142                 break;
 143         }
 144         return unknown;
 145 }
 146
 147
 148 /* Parse the Atari-specific switches= option. */
 149 static int __init atari_switches_setup(char *str)
 150 {
 151         char switches[strlen(str) + 1];
 152         char *p;
 153         int ovsc_shift;
 154         char *args = switches;
 155
 156         if (!MACH_IS_ATARI)
 157                 return 0;
 158
 159         /* copy string to local array, strsep works destructively... */
 160         strcpy(switches, str);
 161         atari_switches = 0;
 162
 163         /* parse the options */
 164         while ((p = strsep(&args, ",")) != NULL) {
 165                 if (!*p)
 166                         continue;
 167                 ovsc_shift = 0;
 168                 if (strncmp(p, "ov_", 3) == 0) {
 169                         p += 3;
 170                         ovsc_shift = ATARI_SWITCH_OVSC_SHIFT;
 171                 }
 172
 173                 if (strcmp(p, "ikbd") == 0) {
 174                         /* RTS line of IKBD ACIA */
 175                         atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift;
 176                 } else if (strcmp(p, "midi") == 0) {
 177                         /* RTS line of MIDI ACIA */
 178                         atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift;
 179                 } else if (strcmp(p, "snd6") == 0) {
 180                         atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift;
 181                 } else if (strcmp(p, "snd7") == 0) {
 182                         atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift;
 183                 }
 184         }
 185         return 0;
 186 }
 187
 188 early_param("switches", atari_switches_setup);
 189
 190
 191     /*
 192      *  Setup the Atari configuration info
 193      */
 194
 195 void __init config_atari(void)
 196 {
 197         unsigned short tos_version;
 198
 199         memset(&atari_hw_present, 0, sizeof(atari_hw_present));
 200
 201         /* Change size of I/O space from 64KB to 4GB. */
 202         ioport_resource.end  = 0xFFFFFFFF;
 203
 204         mach_sched_init      = atari_sched_init;
 205         mach_init_IRQ        = atari_init_IRQ;
 206         mach_get_model   = atari_get_model;
 207         mach_get_hardware_list = atari_get_hardware_list;
 208         arch_gettimeoffset   = atari_gettimeoffset;
 209         mach_reset           = atari_reset;
 210         mach_max_dma_address = 0xffffff;
 211 #if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
 212         mach_beep          = atari_mksound;
 213 #endif
 214 #ifdef CONFIG_HEARTBEAT
 215         mach_heartbeat = atari_heartbeat;
 216 #endif
 217
 218         /* Set switches as requested by the user */
 219         if (atari_switches & ATARI_SWITCH_IKBD)
 220                 acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID;
 221         if (atari_switches & ATARI_SWITCH_MIDI)
 222                 acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID;
 223         if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) {
 224                 sound_ym.rd_data_reg_sel = 14;
 225                 sound_ym.wd_data = sound_ym.rd_data_reg_sel |
 226                                    ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) |
 227                                    ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0);
 228         }
 229
 230         /* ++bjoern:
 231          * Determine hardware present
 232          */
 233
 234         pr_info("Atari hardware found:");
 235         if (MACH_IS_MEDUSA) {
 236                 /* There's no Atari video hardware on the Medusa, but all the
 237                  * addresses below generate a DTACK so no bus error occurs! */
 238         } else if (hwreg_present(f030_xreg)) {
 239                 ATARIHW_SET(VIDEL_SHIFTER);
 240                 pr_cont(" VIDEL");
 241                 /* This is a temporary hack: If there is Falcon video
 242                  * hardware, we assume that the ST-DMA serves SCSI instead of
 243                  * ACSI. In the future, there should be a better method for
 244                  * this...
 245                  */
 246                 ATARIHW_SET(ST_SCSI);
 247                 pr_cont(" STDMA-SCSI");
 248         } else if (hwreg_present(tt_palette)) {
 249                 ATARIHW_SET(TT_SHIFTER);
 250                 pr_cont(" TT_SHIFTER");
 251         } else if (hwreg_present(&shifter.bas_hi)) {
 252                 if (hwreg_present(&shifter.bas_lo) &&
 253                     (shifter.bas_lo = 0x0aau, shifter.bas_lo == 0x0aau)) {
 254                         ATARIHW_SET(EXTD_SHIFTER);
 255                         pr_cont(" EXTD_SHIFTER");
 256                 } else {
 257                         ATARIHW_SET(STND_SHIFTER);
 258                         pr_cont(" STND_SHIFTER");
 259                 }
 260         }
 261         if (hwreg_present(&st_mfp.par_dt_reg)) {
 262                 ATARIHW_SET(ST_MFP);
 263                 pr_cont(" ST_MFP");
 264         }
 265         if (hwreg_present(&tt_mfp.par_dt_reg)) {
 266                 ATARIHW_SET(TT_MFP);
 267                 pr_cont(" TT_MFP");
 268         }
 269         if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) {
 270                 ATARIHW_SET(SCSI_DMA);
 271                 pr_cont(" TT_SCSI_DMA");
 272         }
 273         /*
 274          * The ST-DMA address registers aren't readable
 275          * on all Medusas, so the test below may fail
 276          */
 277         if (MACH_IS_MEDUSA ||
 278             (hwreg_present(&st_dma.dma_vhi) &&
 279              (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) &&
 280              st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa &&
 281              (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) &&
 282              st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) {
 283                 ATARIHW_SET(EXTD_DMA);
 284                 pr_cont(" EXTD_DMA");
 285         }
 286         if (hwreg_present(&tt_scsi.scsi_data)) {
 287                 ATARIHW_SET(TT_SCSI);
 288                 pr_cont(" TT_SCSI");
 289         }
 290         if (hwreg_present(&sound_ym.rd_data_reg_sel)) {
 291                 ATARIHW_SET(YM_2149);
 292                 pr_cont(" YM2149");
 293         }
 294         if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) {
 295                 ATARIHW_SET(PCM_8BIT);
 296                 pr_cont(" PCM");
 297         }
 298         if (hwreg_present(&falcon_codec.unused5)) {
 299                 ATARIHW_SET(CODEC);
 300                 pr_cont(" CODEC");
 301         }
 302         if (hwreg_present(&dsp56k_host_interface.icr)) {
 303                 ATARIHW_SET(DSP56K);
 304                 pr_cont(" DSP56K");
 305         }
 306         if (hwreg_present(&tt_scc_dma.dma_ctrl) &&
 307 #if 0
 308             /* This test sucks! Who knows some better? */
 309             (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) &&
 310             (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0)
 311 #else
 312             !MACH_IS_MEDUSA
 313 #endif
 314             ) {
 315                 ATARIHW_SET(SCC_DMA);
 316                 pr_cont(" SCC_DMA");
 317         }
 318         if (scc_test(&atari_scc.cha_a_ctrl)) {
 319                 ATARIHW_SET(SCC);
 320                 pr_cont(" SCC");
 321         }
 322         if (scc_test(&st_escc.cha_b_ctrl)) {
 323                 ATARIHW_SET(ST_ESCC);
 324                 pr_cont(" ST_ESCC");
 325         }
 326         if (hwreg_present(&tt_scu.sys_mask)) {
 327                 ATARIHW_SET(SCU);
 328                 /* Assume a VME bus if there's a SCU */
 329                 ATARIHW_SET(VME);
 330                 pr_cont(" VME SCU");
 331         }
 332         if (hwreg_present((void *)(0xffff9210))) {
 333                 ATARIHW_SET(ANALOG_JOY);
 334                 pr_cont(" ANALOG_JOY");
 335         }
 336         if (hwreg_present(blitter.halftone)) {
 337                 ATARIHW_SET(BLITTER);
 338                 pr_cont(" BLITTER");
 339         }
 340         if (hwreg_present((void *)0xfff00039)) {
 341                 ATARIHW_SET(IDE);
 342                 pr_cont(" IDE");
 343         }
 344 #if 1 /* This maybe wrong */
 345         if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) &&
 346             hwreg_present(&tt_microwire.mask) &&
 347             (tt_microwire.mask = 0x7ff,
 348              udelay(1),
 349              tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR,
 350              udelay(1),
 351              tt_microwire.data != 0)) {
 352                 ATARIHW_SET(MICROWIRE);
 353                 while (tt_microwire.mask != 0x7ff)
 354                         ;
 355                 pr_cont(" MICROWIRE");
 356         }
 357 #endif
 358         if (hwreg_present(&tt_rtc.regsel)) {
 359                 ATARIHW_SET(TT_CLK);
 360                 pr_cont(" TT_CLK");
 361                 mach_hwclk = atari_tt_hwclk;
 362         }
 363         if (hwreg_present(&mste_rtc.sec_ones)) {
 364                 ATARIHW_SET(MSTE_CLK);
 365                 pr_cont(" MSTE_CLK");
 366                 mach_hwclk = atari_mste_hwclk;
 367         }
 368         if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) &&
 369             hwreg_write(&dma_wd.fdc_speed, 0)) {
 370                 ATARIHW_SET(FDCSPEED);
 371                 pr_cont(" FDC_SPEED");
 372         }
 373         if (!ATARIHW_PRESENT(ST_SCSI)) {
 374                 ATARIHW_SET(ACSI);
 375                 pr_cont(" ACSI");
 376         }
 377         pr_cont("\n");
 378
 379         if (CPU_IS_040_OR_060)
 380                 /* Now it seems to be safe to turn of the tt0 transparent
 381                  * translation (the one that must not be turned off in
 382                  * head.S...)
 383                  */
 384                 asm volatile ("\n"
 385                         "       moveq   #0,%%d0\n"
 386                         "       .chip   68040\n"
 387                         "       movec   %%d0,%%itt0\n"
 388                         "       movec   %%d0,%%dtt0\n"
 389                         "       .chip   68k"
 390                         : /* no outputs */
 391                         : /* no inputs */
 392                         : "d0");
 393
 394         /* allocator for memory that must reside in st-ram */
 395         atari_stram_init();
 396
 397         /* Set up a mapping for the VMEbus address region:
 398          *
 399          * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff
 400          * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at
 401          * 0xfe000000 virt., because this can be done with a single
 402          * transparent translation. On the 68040, lots of often unused
 403          * page tables would be needed otherwise. On a MegaSTE or similar,
 404          * the highest byte is stripped off by hardware due to the 24 bit
 405          * design of the bus.
 406          */
 407
 408         if (CPU_IS_020_OR_030) {
 409                 unsigned long tt1_val;
 410                 tt1_val = 0xfe008543;   /* Translate 0xfexxxxxx, enable, cache
 411                                          * inhibit, read and write, FDC mask = 3,
 412                                          * FDC val = 4 -> Supervisor only */
 413                 asm volatile ("\n"
 414                         "       .chip   68030\n"
 415                         "       pmove   %0,%/tt1\n"
 416                         "       .chip   68k"
 417                         : : "m" (tt1_val));
 418         } else {
 419                 asm volatile ("\n"
 420                         "       .chip   68040\n"
 421                         "       movec   %0,%%itt1\n"
 422                         "       movec   %0,%%dtt1\n"
 423                         "       .chip   68k"
 424                         :
 425                         : "d" (0xfe00a040));    /* Translate 0xfexxxxxx, enable,
 426                                                  * supervisor only, non-cacheable/
 427                                                  * serialized, writable */
 428
 429         }
 430
 431         /* Fetch tos version at Physical 2 */
 432         /*
 433          * We my not be able to access this address if the kernel is
 434          * loaded to st ram, since the first page is unmapped.  On the
 435          * Medusa this is always the case and there is nothing we can do
 436          * about this, so we just assume the smaller offset.  For the TT
 437          * we use the fact that in head.S we have set up a mapping
 438          * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible
 439          * in the last 16MB of the address space.
 440          */
 441         tos_version = (MACH_IS_MEDUSA) ?
 442                         0xfff : *(unsigned short *)0xff000002;
 443         atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68;
 444 }
 445
 446 #ifdef CONFIG_HEARTBEAT
 447 static void atari_heartbeat(int on)
 448 {
 449         unsigned char tmp;
 450         unsigned long flags;
 451
 452         if (atari_dont_touch_floppy_select)
 453                 return;
 454
 455         local_irq_save(flags);
 456         sound_ym.rd_data_reg_sel = 14;  /* Select PSG Port A */
 457         tmp = sound_ym.rd_data_reg_sel;
 458         sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02);
 459         local_irq_restore(flags);
 460 }
 461 #endif
 462
 463 /* ++roman:
 464  *
 465  * This function does a reset on machines that lack the ability to
 466  * assert the processor's _RESET signal somehow via hardware. It is
 467  * based on the fact that you can find the initial SP and PC values
 468  * after a reset at physical addresses 0 and 4. This works pretty well
 469  * for Atari machines, since the lowest 8 bytes of physical memory are
 470  * really ROM (mapped by hardware). For other 680x0 machines: don't
 471  * know if it works...
 472  *
 473  * To get the values at addresses 0 and 4, the MMU better is turned
 474  * off first. After that, we have to jump into physical address space
 475  * (the PC before the pmove statement points to the virtual address of
 476  * the code). Getting that physical address is not hard, but the code
 477  * becomes a bit complex since I've tried to ensure that the jump
 478  * statement after the pmove is in the cache already (otherwise the
 479  * processor can't fetch it!). For that, the code first jumps to the
 480  * jump statement with the (virtual) address of the pmove section in
 481  * an address register . The jump statement is surely in the cache
 482  * now. After that, that physical address of the reset code is loaded
 483  * into the same address register, pmove is done and the same jump
 484  * statements goes to the reset code. Since there are not many
 485  * statements between the two jumps, I hope it stays in the cache.
 486  *
 487  * The C code makes heavy use of the GCC features that you can get the
 488  * address of a C label. No hope to compile this with another compiler
 489  * than GCC!
 490  */
 491
 492 /* ++andreas: no need for complicated code, just depend on prefetch */
 493
 494 static void atari_reset(void)
 495 {
 496         long tc_val = 0;
 497         long reset_addr;
 498
 499         /*
 500          * On the Medusa, phys. 0x4 may contain garbage because it's no
 501          * ROM.  See above for explanation why we cannot use PTOV(4).
 502          */
 503         reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 :
 504                      *(unsigned long *) 0xff000004;
 505
 506         /* reset ACIA for switch off OverScan, if it's active */
 507         if (atari_switches & ATARI_SWITCH_OVSC_IKBD)
 508                 acia.key_ctrl = ACIA_RESET;
 509         if (atari_switches & ATARI_SWITCH_OVSC_MIDI)
 510                 acia.mid_ctrl = ACIA_RESET;
 511
 512         /* processor independent: turn off interrupts and reset the VBR;
 513          * the caches must be left enabled, else prefetching the final jump
 514          * instruction doesn't work.
 515          */
 516         local_irq_disable();
 517         asm volatile ("movec    %0,%%vbr"
 518                         : : "d" (0));
 519
 520         if (CPU_IS_040_OR_060) {
 521                 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
 522                 if (CPU_IS_060) {
 523                         /* 68060: clear PCR to turn off superscalar operation */
 524                         asm volatile ("\n"
 525                                 "       .chip 68060\n"
 526                                 "       movec %0,%%pcr\n"
 527                                 "       .chip 68k"
 528                                 : : "d" (0));
 529                 }
 530
 531                 asm volatile ("\n"
 532                         "       move.l  %0,%%d0\n"
 533                         "       and.l   #0xff000000,%%d0\n"
 534                         "       or.w    #0xe020,%%d0\n"   /* map 16 MB, enable, cacheable */
 535                         "       .chip   68040\n"
 536                         "       movec   %%d0,%%itt0\n"
 537                         "       movec   %%d0,%%dtt0\n"
 538                         "       .chip   68k\n"
 539                         "       jmp     %0@"
 540                         : : "a" (jmp_addr040)
 541                         : "d0");
 542         jmp_addr_label040:
 543                 asm volatile ("\n"
 544                         "       moveq   #0,%%d0\n"
 545                         "       nop\n"
 546                         "       .chip   68040\n"
 547                         "       cinva   %%bc\n"
 548                         "       nop\n"
 549                         "       pflusha\n"
 550                         "       nop\n"
 551                         "       movec   %%d0,%%tc\n"
 552                         "       nop\n"
 553                         /* the following setup of transparent translations is needed on the
 554                          * Afterburner040 to successfully reboot. Other machines shouldn't
 555                          * care about a different tt regs setup, they also didn't care in
 556                          * the past that the regs weren't turned off. */
 557                         "       move.l  #0xffc000,%%d0\n" /* whole insn space cacheable */
 558                         "       movec   %%d0,%%itt0\n"
 559                         "       movec   %%d0,%%itt1\n"
 560                         "       or.w    #0x40,%/d0\n" /* whole data space non-cacheable/ser. */
 561                         "       movec   %%d0,%%dtt0\n"
 562                         "       movec   %%d0,%%dtt1\n"
 563                         "       .chip   68k\n"
 564                         "       jmp     %0@"
 565                         : /* no outputs */
 566                         : "a" (reset_addr)
 567                         : "d0");
 568         } else
 569                 asm volatile ("\n"
 570                         "       pmove   %0,%%tc\n"
 571                         "       jmp     %1@"
 572                         : /* no outputs */
 573                         : "m" (tc_val), "a" (reset_addr));
 574 }
 575
 576
 577 static void atari_get_model(char *model)
 578 {
 579         strcpy(model, "Atari ");
 580         switch (atari_mch_cookie >> 16) {
 581         case ATARI_MCH_ST:
 582                 if (ATARIHW_PRESENT(MSTE_CLK))
 583                         strcat(model, "Mega ST");
 584                 else
 585                         strcat(model, "ST");
 586                 break;
 587         case ATARI_MCH_STE:
 588                 if (MACH_IS_MSTE)
 589                         strcat(model, "Mega STE");
 590                 else
 591                         strcat(model, "STE");
 592                 break;
 593         case ATARI_MCH_TT:
 594                 if (MACH_IS_MEDUSA)
 595                         /* Medusa has TT _MCH cookie */
 596                         strcat(model, "Medusa");
 597                 else
 598                         strcat(model, "TT");
 599                 break;
 600         case ATARI_MCH_FALCON:
 601                 strcat(model, "Falcon");
 602                 if (MACH_IS_AB40)
 603                         strcat(model, " (with Afterburner040)");
 604                 break;
 605         default:
 606                 sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)",
 607                         atari_mch_cookie);
 608                 break;
 609         }
 610 }
 611
 612
 613 static void atari_get_hardware_list(struct seq_file *m)
 614 {
 615         int i;
 616
 617         for (i = 0; i < m68k_num_memory; i++)
 618                 seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n",
 619                                 m68k_memory[i].size >> 20, m68k_memory[i].addr,
 620                                 (m68k_memory[i].addr & 0xff000000 ?
 621                                  "alternate RAM" : "ST-RAM"));
 622
 623 #define ATARIHW_ANNOUNCE(name, str)                     \
 624         if (ATARIHW_PRESENT(name))                      \
 625                 seq_printf(m, "\t%s\n", str)
 626
 627         seq_puts(m, "Detected hardware:\n");
 628         ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter");
 629         ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter");
 630         ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter");
 631         ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter");
 632         ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator");
 633         ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound");
 634         ATARIHW_ANNOUNCE(CODEC, "CODEC Sound");
 635         ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)");
 636         ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)");
 637         ATARIHW_ANNOUNCE(ACSI, "ACSI Interface");
 638         ATARIHW_ANNOUNCE(IDE, "IDE Interface");
 639         ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC");
 640         ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901");
 641         ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901");
 642         ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530");
 643         ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230");
 644         ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface");
 645         ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface");
 646         ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)");
 647         ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)");
 648         ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380");
 649         ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC");
 650         ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A");
 651         ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15");
 652         ATARIHW_ANNOUNCE(SCU, "System Control Unit");
 653         ATARIHW_ANNOUNCE(BLITTER, "Blitter");
 654         ATARIHW_ANNOUNCE(VME, "VME Bus");
 655         ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor");
 656 }
 657
 658 /*
 659  * MSch: initial platform device support for Atari,
 660  * required for EtherNAT/EtherNEC/NetUSBee drivers
 661  */
 662
 663 #if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC)
 664 static void isp1160_delay(struct device *dev, int delay)
 665 {
 666         ndelay(delay);
 667 }
 668 #endif
 669
 670 #ifdef CONFIG_ATARI_ETHERNAT
 671 /*
 672  * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver
 673  */
 674
 675 #define ATARI_ETHERNAT_IRQ              140
 676
 677 static struct resource smc91x_resources[] = {
 678         [0] = {
 679                 .name   = "smc91x-regs",
 680                 .start  = ATARI_ETHERNAT_PHYS_ADDR,
 681                 .end    = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff,
 682                 .flags  = IORESOURCE_MEM,
 683         },
 684         [1] = {
 685                 .name   = "smc91x-irq",
 686                 .start  = ATARI_ETHERNAT_IRQ,
 687                 .end    = ATARI_ETHERNAT_IRQ,
 688                 .flags  = IORESOURCE_IRQ,
 689         },
 690 };
 691
 692 static struct platform_device smc91x_device = {
 693         .name           = "smc91x",
 694         .id             = -1,
 695         .num_resources  = ARRAY_SIZE(smc91x_resources),
 696         .resource       = smc91x_resources,
 697 };
 698
 699 /*
 700  * ISP 1160 - using the isp116x-hcd module
 701  */
 702
 703 #define ATARI_USB_PHYS_ADDR     0x80000012
 704 #define ATARI_USB_IRQ           139
 705
 706 static struct resource isp1160_resources[] = {
 707         [0] = {
 708                 .name   = "isp1160-data",
 709                 .start  = ATARI_USB_PHYS_ADDR,
 710                 .end    = ATARI_USB_PHYS_ADDR + 0x1,
 711                 .flags  = IORESOURCE_MEM,
 712         },
 713         [1] = {
 714                 .name   = "isp1160-regs",
 715                 .start  = ATARI_USB_PHYS_ADDR + 0x4,
 716                 .end    = ATARI_USB_PHYS_ADDR + 0x5,
 717                 .flags  = IORESOURCE_MEM,
 718         },
 719         [2] = {
 720                 .name   = "isp1160-irq",
 721                 .start  = ATARI_USB_IRQ,
 722                 .end    = ATARI_USB_IRQ,
 723                 .flags  = IORESOURCE_IRQ,
 724         },
 725 };
 726
 727 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
 728 static struct isp116x_platform_data isp1160_platform_data = {
 729         /* Enable internal resistors on downstream ports */
 730         .sel15Kres              = 1,
 731         /* On-chip overcurrent protection */
 732         .oc_enable              = 1,
 733         /* INT output polarity */
 734         .int_act_high           = 1,
 735         /* INT edge or level triggered */
 736         .int_edge_triggered     = 0,
 737
 738         /* WAKEUP pin connected - NOT SUPPORTED  */
 739         /* .remote_wakeup_connected = 0, */
 740         /* Wakeup by devices on usb bus enabled */
 741         .remote_wakeup_enable   = 0,
 742         .delay                  = isp1160_delay,
 743 };
 744
 745 static struct platform_device isp1160_device = {
 746         .name           = "isp116x-hcd",
 747         .id             = 0,
 748         .num_resources  = ARRAY_SIZE(isp1160_resources),
 749         .resource       = isp1160_resources,
 750         .dev                    = {
 751                 .platform_data  = &isp1160_platform_data,
 752         },
 753 };
 754
 755 static struct platform_device *atari_ethernat_devices[] __initdata = {
 756         &smc91x_device,
 757         &isp1160_device
 758 };
 759 #endif /* CONFIG_ATARI_ETHERNAT */
 760
 761 #ifdef CONFIG_ATARI_ETHERNEC
 762 /*
 763  * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset,
 764  * handled by ne.c driver
 765  */
 766
 767 #define ATARI_ETHERNEC_PHYS_ADDR        0xfffa0000
 768 #define ATARI_ETHERNEC_BASE             0x300
 769 #define ATARI_ETHERNEC_IRQ              IRQ_MFP_TIMER1
 770
 771 static struct resource rtl8019_resources[] = {
 772         [0] = {
 773                 .name   = "rtl8019-regs",
 774                 .start  = ATARI_ETHERNEC_BASE,
 775                 .end    = ATARI_ETHERNEC_BASE + 0x20 - 1,
 776                 .flags  = IORESOURCE_IO,
 777         },
 778         [1] = {
 779                 .name   = "rtl8019-irq",
 780                 .start  = ATARI_ETHERNEC_IRQ,
 781                 .end    = ATARI_ETHERNEC_IRQ,
 782                 .flags  = IORESOURCE_IRQ,
 783         },
 784 };
 785
 786 static struct platform_device rtl8019_device = {
 787         .name           = "ne",
 788         .id             = -1,
 789         .num_resources  = ARRAY_SIZE(rtl8019_resources),
 790         .resource       = rtl8019_resources,
 791 };
 792
 793 /*
 794  * NetUSBee: ISP1160 USB host adapter via ROM-port adapter
 795  */
 796
 797 #define ATARI_NETUSBEE_PHYS_ADDR        0xfffa8000
 798 #define ATARI_NETUSBEE_BASE             0x340
 799 #define ATARI_NETUSBEE_IRQ              IRQ_MFP_TIMER2
 800
 801 static struct resource netusbee_resources[] = {
 802         [0] = {
 803                 .name   = "isp1160-data",
 804                 .start  = ATARI_NETUSBEE_BASE,
 805                 .end    = ATARI_NETUSBEE_BASE + 0x1,
 806                 .flags  = IORESOURCE_MEM,
 807         },
 808         [1] = {
 809                 .name   = "isp1160-regs",
 810                 .start  = ATARI_NETUSBEE_BASE + 0x20,
 811                 .end    = ATARI_NETUSBEE_BASE + 0x21,
 812                 .flags  = IORESOURCE_MEM,
 813         },
 814         [2] = {
 815                 .name   = "isp1160-irq",
 816                 .start  = ATARI_NETUSBEE_IRQ,
 817                 .end    = ATARI_NETUSBEE_IRQ,
 818                 .flags  = IORESOURCE_IRQ,
 819         },
 820 };
 821
 822 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
 823 static struct isp116x_platform_data netusbee_platform_data = {
 824         /* Enable internal resistors on downstream ports */
 825         .sel15Kres              = 1,
 826         /* On-chip overcurrent protection */
 827         .oc_enable              = 1,
 828         /* INT output polarity */
 829         .int_act_high           = 1,
 830         /* INT edge or level triggered */
 831         .int_edge_triggered     = 0,
 832
 833         /* WAKEUP pin connected - NOT SUPPORTED  */
 834         /* .remote_wakeup_connected = 0, */
 835         /* Wakeup by devices on usb bus enabled */
 836         .remote_wakeup_enable   = 0,
 837         .delay                  = isp1160_delay,
 838 };
 839
 840 static struct platform_device netusbee_device = {
 841         .name           = "isp116x-hcd",
 842         .id             = 1,
 843         .num_resources  = ARRAY_SIZE(netusbee_resources),
 844         .resource       = netusbee_resources,
 845         .dev                    = {
 846                 .platform_data  = &netusbee_platform_data,
 847         },
 848 };
 849
 850 static struct platform_device *atari_netusbee_devices[] __initdata = {
 851         &rtl8019_device,
 852         &netusbee_device
 853 };
 854 #endif /* CONFIG_ATARI_ETHERNEC */
 855
 856 #if IS_ENABLED(CONFIG_ATARI_SCSI)
 857 static const struct resource atari_scsi_st_rsrc[] __initconst = {
 858         {
 859                 .flags = IORESOURCE_IRQ,
 860                 .start = IRQ_MFP_FSCSI,
 861                 .end   = IRQ_MFP_FSCSI,
 862         },
 863 };
 864
 865 static const struct resource atari_scsi_tt_rsrc[] __initconst = {
 866         {
 867                 .flags = IORESOURCE_IRQ,
 868                 .start = IRQ_TT_MFP_SCSI,
 869                 .end   = IRQ_TT_MFP_SCSI,
 870         },
 871 };
 872 #endif
 873
 874 int __init atari_platform_init(void)
 875 {
 876         int rv = 0;
 877
 878         if (!MACH_IS_ATARI)
 879                 return -ENODEV;
 880
 881 #ifdef CONFIG_ATARI_ETHERNAT
 882         {
 883                 unsigned char *enatc_virt;
 884                 enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
 885                 if (hwreg_present(enatc_virt)) {
 886                         rv = platform_add_devices(atari_ethernat_devices,
 887                                                 ARRAY_SIZE(atari_ethernat_devices));
 888                 }
 889                 iounmap(enatc_virt);
 890         }
 891 #endif
 892
 893 #ifdef CONFIG_ATARI_ETHERNEC
 894         {
 895                 int error;
 896                 unsigned char *enec_virt;
 897                 enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf);
 898                 if (hwreg_present(enec_virt)) {
 899                         error = platform_add_devices(atari_netusbee_devices,
 900                                                 ARRAY_SIZE(atari_netusbee_devices));
 901                         if (error && !rv)
 902                                 rv = error;
 903                 }
 904                 iounmap(enec_virt);
 905         }
 906 #endif
 907
 908 #if IS_ENABLED(CONFIG_ATARI_SCSI)
 909         if (ATARIHW_PRESENT(ST_SCSI))
 910                 platform_device_register_simple("atari_scsi", -1,
 911                         atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc));
 912         else if (ATARIHW_PRESENT(TT_SCSI))
 913                 platform_device_register_simple("atari_scsi", -1,
 914                         atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc));
 915 #endif
 916
 917         return rv;
 918 }
 919
 920 arch_initcall(atari_platform_init);