LXR linux/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
  50u_long atari_mch_cookie;
  51EXPORT_SYMBOL(atari_mch_cookie);
  52
  53u_long atari_mch_type;
  54EXPORT_SYMBOL(atari_mch_type);
  55
  56struct atari_hw_present atari_hw_present;
  57EXPORT_SYMBOL(atari_hw_present);
  58
  59u_long atari_switches;
  60EXPORT_SYMBOL(atari_switches);
  61
  62int atari_dont_touch_floppy_select;
  63EXPORT_SYMBOL(atari_dont_touch_floppy_select);
  64
  65int atari_rtc_year_offset;
  66
  67/* local function prototypes */
  68static void atari_reset(void);
  69static void atari_get_model(char *model);
  70static void atari_get_hardware_list(struct seq_file *m);
  71
  72/* atari specific irq functions */
  73extern void atari_init_IRQ (void);
  74extern void atari_mksound(unsigned int count, unsigned int ticks);
  75#ifdef CONFIG_HEARTBEAT
  76static void atari_heartbeat(int on);
  77#endif
  78
  79/* atari specific timer functions (in time.c) */
  80extern void atari_sched_init(irq_handler_t);
  81extern int atari_mste_hwclk (int, struct rtc_time *);
  82extern int atari_tt_hwclk (int, struct rtc_time *);
  83
  84/* ++roman: This is a more elaborate test for an SCC chip, since the plain
  85 * Medusa board generates DTACK at the SCC's standard addresses, but a SCC
  86 * board in the Medusa is possible. Also, the addresses where the ST_ESCC
  87 * resides generate DTACK without the chip, too.
  88 * The method is to write values into the interrupt vector register, that
  89 * should be readable without trouble (from channel A!).
  90 */
  91
  92static int __init scc_test(volatile char *ctla)
  93{
  94        if (!hwreg_present(ctla))
  95                return 0;
  96        MFPDELAY();
  97
  98        *ctla = 2;
  99        MFPDELAY();
 100        *ctla = 0x40;
 101        MFPDELAY();
 102
 103        *ctla = 2;
 104        MFPDELAY();
 105        if (*ctla != 0x40)
 106                return 0;
 107        MFPDELAY();
 108
 109        *ctla = 2;
 110        MFPDELAY();
 111        *ctla = 0x60;
 112        MFPDELAY();
 113
 114        *ctla = 2;
 115        MFPDELAY();
 116        if (*ctla != 0x60)
 117                return 0;
 118
 119        return 1;
 120}
 121
 122
 123    /*
 124     *  Parse an Atari-specific record in the bootinfo
 125     */
 126
 127int __init atari_parse_bootinfo(const struct bi_record *record)
 128{
 129        int unknown = 0;
 130        const void *data = record->data;
 131
 132        switch (be16_to_cpu(record->tag)) {
 133        case BI_ATARI_MCH_COOKIE:
 134                atari_mch_cookie = be32_to_cpup(data);
 135                break;
 136        case BI_ATARI_MCH_TYPE:
 137                atari_mch_type = be32_to_cpup(data);
 138                break;
 139        default:
 140                unknown = 1;
 141                break;
 142        }
 143        return unknown;
 144}
 145
 146
 147/* Parse the Atari-specific switches= option. */
 148static int __init atari_switches_setup(char *str)
 149{
 150        char switches[COMMAND_LINE_SIZE];
 151        char *p;
 152        int ovsc_shift;
 153        char *args = switches;
 154
 155        if (!MACH_IS_ATARI)
 156                return 0;
 157
 158        /* copy string to local array, strsep works destructively... */
 159        strcpy(switches, str);
 160        atari_switches = 0;
 161
 162        /* parse the options */
 163        while ((p = strsep(&args, ",")) != NULL) {
 164                if (!*p)
 165                        continue;
 166                ovsc_shift = 0;
 167                if (strncmp(p, "ov_", 3) == 0) {
 168                        p += 3;
 169                        ovsc_shift = ATARI_SWITCH_OVSC_SHIFT;
 170                }
 171
 172                if (strcmp(p, "ikbd") == 0) {
 173                        /* RTS line of IKBD ACIA */
 174                        atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift;
 175                } else if (strcmp(p, "midi") == 0) {
 176                        /* RTS line of MIDI ACIA */
 177                        atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift;
 178                } else if (strcmp(p, "snd6") == 0) {
 179                        atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift;
 180                } else if (strcmp(p, "snd7") == 0) {
 181                        atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift;
 182                }
 183        }
 184        return 0;
 185}
 186
 187early_param("switches", atari_switches_setup);
 188
 189
 190    /*
 191     *  Setup the Atari configuration info
 192     */
 193
 194void __init config_atari(void)
 195{
 196        unsigned short tos_version;
 197
 198        memset(&atari_hw_present, 0, sizeof(atari_hw_present));
 199
 200        /* Change size of I/O space from 64KB to 4GB. */
 201        ioport_resource.end  = 0xFFFFFFFF;
 202
 203        mach_sched_init      = atari_sched_init;
 204        mach_init_IRQ        = atari_init_IRQ;
 205        mach_get_model   = atari_get_model;
 206        mach_get_hardware_list = atari_get_hardware_list;
 207        mach_reset           = atari_reset;
 208        mach_max_dma_address = 0xffffff;
 209#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
 210        mach_beep          = atari_mksound;
 211#endif
 212#ifdef CONFIG_HEARTBEAT
 213        mach_heartbeat = atari_heartbeat;
 214#endif
 215
 216        /* Set switches as requested by the user */
 217        if (atari_switches & ATARI_SWITCH_IKBD)
 218                acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID;
 219        if (atari_switches & ATARI_SWITCH_MIDI)
 220                acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID;
 221        if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) {
 222                sound_ym.rd_data_reg_sel = 14;
 223                sound_ym.wd_data = sound_ym.rd_data_reg_sel |
 224                                   ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) |
 225                                   ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0);
 226        }
 227
 228        /* ++bjoern:
 229         * Determine hardware present
 230         */
 231
 232        pr_info("Atari hardware found:");
 233        if (MACH_IS_MEDUSA) {
 234                /* There's no Atari video hardware on the Medusa, but all the
 235                 * addresses below generate a DTACK so no bus error occurs! */
 236        } else if (hwreg_present(f030_xreg)) {
 237                ATARIHW_SET(VIDEL_SHIFTER);
 238                pr_cont(" VIDEL");
 239                /* This is a temporary hack: If there is Falcon video
 240                 * hardware, we assume that the ST-DMA serves SCSI instead of
 241                 * ACSI. In the future, there should be a better method for
 242                 * this...
 243                 */
 244                ATARIHW_SET(ST_SCSI);
 245                pr_cont(" STDMA-SCSI");
 246        } else if (hwreg_present(tt_palette)) {
 247                ATARIHW_SET(TT_SHIFTER);
 248                pr_cont(" TT_SHIFTER");
 249        } else if (hwreg_present(&shifter_st.bas_hi)) {
 250                if (hwreg_present(&shifter_st.bas_lo) &&
 251                    (shifter_st.bas_lo = 0x0aau, shifter_st.bas_lo == 0x0aau)) {
 252                        ATARIHW_SET(EXTD_SHIFTER);
 253                        pr_cont(" EXTD_SHIFTER");
 254                } else {
 255                        ATARIHW_SET(STND_SHIFTER);
 256                        pr_cont(" STND_SHIFTER");
 257                }
 258        }
 259        if (hwreg_present(&st_mfp.par_dt_reg)) {
 260                ATARIHW_SET(ST_MFP);
 261                pr_cont(" ST_MFP");
 262        }
 263        if (hwreg_present(&tt_mfp.par_dt_reg)) {
 264                ATARIHW_SET(TT_MFP);
 265                pr_cont(" TT_MFP");
 266        }
 267        if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) {
 268                ATARIHW_SET(SCSI_DMA);
 269                pr_cont(" TT_SCSI_DMA");
 270        }
 271        /*
 272         * The ST-DMA address registers aren't readable
 273         * on all Medusas, so the test below may fail
 274         */
 275        if (MACH_IS_MEDUSA ||
 276            (hwreg_present(&st_dma.dma_vhi) &&
 277             (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) &&
 278             st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa &&
 279             (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) &&
 280             st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) {
 281                ATARIHW_SET(EXTD_DMA);
 282                pr_cont(" EXTD_DMA");
 283        }
 284        if (hwreg_present(&tt_scsi.scsi_data)) {
 285                ATARIHW_SET(TT_SCSI);
 286                pr_cont(" TT_SCSI");
 287        }
 288        if (hwreg_present(&sound_ym.rd_data_reg_sel)) {
 289                ATARIHW_SET(YM_2149);
 290                pr_cont(" YM2149");
 291        }
 292        if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) {
 293                ATARIHW_SET(PCM_8BIT);
 294                pr_cont(" PCM");
 295        }
 296        if (hwreg_present(&falcon_codec.unused5)) {
 297                ATARIHW_SET(CODEC);
 298                pr_cont(" CODEC");
 299        }
 300        if (hwreg_present(&dsp56k_host_interface.icr)) {
 301                ATARIHW_SET(DSP56K);
 302                pr_cont(" DSP56K");
 303        }
 304        if (hwreg_present(&tt_scc_dma.dma_ctrl) &&
 305#if 0
 306            /* This test sucks! Who knows some better? */
 307            (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) &&
 308            (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0)
 309#else
 310            !MACH_IS_MEDUSA
 311#endif
 312            ) {
 313                ATARIHW_SET(SCC_DMA);
 314                pr_cont(" SCC_DMA");
 315        }
 316        if (scc_test(&atari_scc.cha_a_ctrl)) {
 317                ATARIHW_SET(SCC);
 318                pr_cont(" SCC");
 319        }
 320        if (scc_test(&st_escc.cha_b_ctrl)) {
 321                ATARIHW_SET(ST_ESCC);
 322                pr_cont(" ST_ESCC");
 323        }
 324        if (hwreg_present(&tt_scu.sys_mask)) {
 325                ATARIHW_SET(SCU);
 326                /* Assume a VME bus if there's a SCU */
 327                ATARIHW_SET(VME);
 328                pr_cont(" VME SCU");
 329        }
 330        if (hwreg_present((void *)(0xffff9210))) {
 331                ATARIHW_SET(ANALOG_JOY);
 332                pr_cont(" ANALOG_JOY");
 333        }
 334        if (hwreg_present(blitter.halftone)) {
 335                ATARIHW_SET(BLITTER);
 336                pr_cont(" BLITTER");
 337        }
 338        if (hwreg_present((void *)0xfff00039)) {
 339                ATARIHW_SET(IDE);
 340                pr_cont(" IDE");
 341        }
 342#if 1 /* This maybe wrong */
 343        if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) &&
 344            hwreg_present(&tt_microwire.mask) &&
 345            (tt_microwire.mask = 0x7ff,
 346             udelay(1),
 347             tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR,
 348             udelay(1),
 349             tt_microwire.data != 0)) {
 350                ATARIHW_SET(MICROWIRE);
 351                while (tt_microwire.mask != 0x7ff)
 352                        ;
 353                pr_cont(" MICROWIRE");
 354        }
 355#endif
 356        if (hwreg_present(&tt_rtc.regsel)) {
 357                ATARIHW_SET(TT_CLK);
 358                pr_cont(" TT_CLK");
 359                mach_hwclk = atari_tt_hwclk;
 360        }
 361        if (hwreg_present(&mste_rtc.sec_ones)) {
 362                ATARIHW_SET(MSTE_CLK);
 363                pr_cont(" MSTE_CLK");
 364                mach_hwclk = atari_mste_hwclk;
 365        }
 366        if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) &&
 367            hwreg_write(&dma_wd.fdc_speed, 0)) {
 368                ATARIHW_SET(FDCSPEED);
 369                pr_cont(" FDC_SPEED");
 370        }
 371        if (!ATARIHW_PRESENT(ST_SCSI)) {
 372                ATARIHW_SET(ACSI);
 373                pr_cont(" ACSI");
 374        }
 375        pr_cont("\n");
 376
 377        if (CPU_IS_040_OR_060)
 378                /* Now it seems to be safe to turn of the tt0 transparent
 379                 * translation (the one that must not be turned off in
 380                 * head.S...)
 381                 */
 382                asm volatile ("\n"
 383                        "       moveq   #0,%%d0\n"
 384                        "       .chip   68040\n"
 385                        "       movec   %%d0,%%itt0\n"
 386                        "       movec   %%d0,%%dtt0\n"
 387                        "       .chip   68k"
 388                        : /* no outputs */
 389                        : /* no inputs */
 390                        : "d0");
 391
 392        /* allocator for memory that must reside in st-ram */
 393        atari_stram_init();
 394
 395        /* Set up a mapping for the VMEbus address region:
 396         *
 397         * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff
 398         * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at
 399         * 0xfe000000 virt., because this can be done with a single
 400         * transparent translation. On the 68040, lots of often unused
 401         * page tables would be needed otherwise. On a MegaSTE or similar,
 402         * the highest byte is stripped off by hardware due to the 24 bit
 403         * design of the bus.
 404         */
 405
 406        if (CPU_IS_020_OR_030) {
 407                unsigned long tt1_val;
 408                tt1_val = 0xfe008543;   /* Translate 0xfexxxxxx, enable, cache
 409                                         * inhibit, read and write, FDC mask = 3,
 410                                         * FDC val = 4 -> Supervisor only */
 411                asm volatile ("\n"
 412                        "       .chip   68030\n"
 413                        "       pmove   %0,%/tt1\n"
 414                        "       .chip   68k"
 415                        : : "m" (tt1_val));
 416        } else {
 417                asm volatile ("\n"
 418                        "       .chip   68040\n"
 419                        "       movec   %0,%%itt1\n"
 420                        "       movec   %0,%%dtt1\n"
 421                        "       .chip   68k"
 422                        :
 423                        : "d" (0xfe00a040));    /* Translate 0xfexxxxxx, enable,
 424                                                 * supervisor only, non-cacheable/
 425                                                 * serialized, writable */
 426
 427        }
 428
 429        /* Fetch tos version at Physical 2 */
 430        /*
 431         * We my not be able to access this address if the kernel is
 432         * loaded to st ram, since the first page is unmapped.  On the
 433         * Medusa this is always the case and there is nothing we can do
 434         * about this, so we just assume the smaller offset.  For the TT
 435         * we use the fact that in head.S we have set up a mapping
 436         * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible
 437         * in the last 16MB of the address space.
 438         */
 439        tos_version = (MACH_IS_MEDUSA) ?
 440                        0xfff : *(unsigned short *)0xff000002;
 441        atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68;
 442}
 443
 444#ifdef CONFIG_HEARTBEAT
 445static void atari_heartbeat(int on)
 446{
 447        unsigned char tmp;
 448        unsigned long flags;
 449
 450        if (atari_dont_touch_floppy_select)
 451                return;
 452
 453        local_irq_save(flags);
 454        sound_ym.rd_data_reg_sel = 14;  /* Select PSG Port A */
 455        tmp = sound_ym.rd_data_reg_sel;
 456        sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02);
 457        local_irq_restore(flags);
 458}
 459#endif
 460
 461/* ++roman:
 462 *
 463 * This function does a reset on machines that lack the ability to
 464 * assert the processor's _RESET signal somehow via hardware. It is
 465 * based on the fact that you can find the initial SP and PC values
 466 * after a reset at physical addresses 0 and 4. This works pretty well
 467 * for Atari machines, since the lowest 8 bytes of physical memory are
 468 * really ROM (mapped by hardware). For other 680x0 machines: don't
 469 * know if it works...
 470 *
 471 * To get the values at addresses 0 and 4, the MMU better is turned
 472 * off first. After that, we have to jump into physical address space
 473 * (the PC before the pmove statement points to the virtual address of
 474 * the code). Getting that physical address is not hard, but the code
 475 * becomes a bit complex since I've tried to ensure that the jump
 476 * statement after the pmove is in the cache already (otherwise the
 477 * processor can't fetch it!). For that, the code first jumps to the
 478 * jump statement with the (virtual) address of the pmove section in
 479 * an address register . The jump statement is surely in the cache
 480 * now. After that, that physical address of the reset code is loaded
 481 * into the same address register, pmove is done and the same jump
 482 * statements goes to the reset code. Since there are not many
 483 * statements between the two jumps, I hope it stays in the cache.
 484 *
 485 * The C code makes heavy use of the GCC features that you can get the
 486 * address of a C label. No hope to compile this with another compiler
 487 * than GCC!
 488 */
 489
 490/* ++andreas: no need for complicated code, just depend on prefetch */
 491
 492static void atari_reset(void)
 493{
 494        long tc_val = 0;
 495        long reset_addr;
 496
 497        /*
 498         * On the Medusa, phys. 0x4 may contain garbage because it's no
 499         * ROM.  See above for explanation why we cannot use PTOV(4).
 500         */
 501        reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 :
 502                     *(unsigned long *) 0xff000004;
 503
 504        /* reset ACIA for switch off OverScan, if it's active */
 505        if (atari_switches & ATARI_SWITCH_OVSC_IKBD)
 506                acia.key_ctrl = ACIA_RESET;
 507        if (atari_switches & ATARI_SWITCH_OVSC_MIDI)
 508                acia.mid_ctrl = ACIA_RESET;
 509
 510        /* processor independent: turn off interrupts and reset the VBR;
 511         * the caches must be left enabled, else prefetching the final jump
 512         * instruction doesn't work.
 513         */
 514        local_irq_disable();
 515        asm volatile ("movec    %0,%%vbr"
 516                        : : "d" (0));
 517
 518        if (CPU_IS_040_OR_060) {
 519                unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
 520                if (CPU_IS_060) {
 521                        /* 68060: clear PCR to turn off superscalar operation */
 522                        asm volatile ("\n"
 523                                "       .chip 68060\n"
 524                                "       movec %0,%%pcr\n"
 525                                "       .chip 68k"
 526                                : : "d" (0));
 527                }
 528
 529                asm volatile ("\n"
 530                        "       move.l  %0,%%d0\n"
 531                        "       and.l   #0xff000000,%%d0\n"
 532                        "       or.w    #0xe020,%%d0\n"   /* map 16 MB, enable, cacheable */
 533                        "       .chip   68040\n"
 534                        "       movec   %%d0,%%itt0\n"
 535                        "       movec   %%d0,%%dtt0\n"
 536                        "       .chip   68k\n"
 537                        "       jmp     %0@"
 538                        : : "a" (jmp_addr040)
 539                        : "d0");
 540        jmp_addr_label040:
 541                asm volatile ("\n"
 542                        "       moveq   #0,%%d0\n"
 543                        "       nop\n"
 544                        "       .chip   68040\n"
 545                        "       cinva   %%bc\n"
 546                        "       nop\n"
 547                        "       pflusha\n"
 548                        "       nop\n"
 549                        "       movec   %%d0,%%tc\n"
 550                        "       nop\n"
 551                        /* the following setup of transparent translations is needed on the
 552                         * Afterburner040 to successfully reboot. Other machines shouldn't
 553                         * care about a different tt regs setup, they also didn't care in
 554                         * the past that the regs weren't turned off. */
 555                        "       move.l  #0xffc000,%%d0\n" /* whole insn space cacheable */
 556                        "       movec   %%d0,%%itt0\n"
 557                        "       movec   %%d0,%%itt1\n"
 558                        "       or.w    #0x40,%/d0\n" /* whole data space non-cacheable/ser. */
 559                        "       movec   %%d0,%%dtt0\n"
 560                        "       movec   %%d0,%%dtt1\n"
 561                        "       .chip   68k\n"
 562                        "       jmp     %0@"
 563                        : /* no outputs */
 564                        : "a" (reset_addr)
 565                        : "d0");
 566        } else
 567                asm volatile ("\n"
 568                        "       pmove   %0,%%tc\n"
 569                        "       jmp     %1@"
 570                        : /* no outputs */
 571                        : "m" (tc_val), "a" (reset_addr));
 572}
 573
 574
 575static void atari_get_model(char *model)
 576{
 577        strcpy(model, "Atari ");
 578        switch (atari_mch_cookie >> 16) {
 579        case ATARI_MCH_ST:
 580                if (ATARIHW_PRESENT(MSTE_CLK))
 581                        strcat(model, "Mega ST");
 582                else
 583                        strcat(model, "ST");
 584                break;
 585        case ATARI_MCH_STE:
 586                if (MACH_IS_MSTE)
 587                        strcat(model, "Mega STE");
 588                else
 589                        strcat(model, "STE");
 590                break;
 591        case ATARI_MCH_TT:
 592                if (MACH_IS_MEDUSA)
 593                        /* Medusa has TT _MCH cookie */
 594                        strcat(model, "Medusa");
 595                else
 596                        strcat(model, "TT");
 597                break;
 598        case ATARI_MCH_FALCON:
 599                strcat(model, "Falcon");
 600                if (MACH_IS_AB40)
 601                        strcat(model, " (with Afterburner040)");
 602                break;
 603        default:
 604                sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)",
 605                        atari_mch_cookie);
 606                break;
 607        }
 608}
 609
 610
 611static void atari_get_hardware_list(struct seq_file *m)
 612{
 613        int i;
 614
 615        for (i = 0; i < m68k_num_memory; i++)
 616                seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n",
 617                                m68k_memory[i].size >> 20, m68k_memory[i].addr,
 618                                (m68k_memory[i].addr & 0xff000000 ?
 619                                 "alternate RAM" : "ST-RAM"));
 620
 621#define ATARIHW_ANNOUNCE(name, str)                     \
 622        if (ATARIHW_PRESENT(name))                      \
 623                seq_printf(m, "\t%s\n", str)
 624
 625        seq_puts(m, "Detected hardware:\n");
 626        ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter");
 627        ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter");
 628        ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter");
 629        ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter");
 630        ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator");
 631        ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound");
 632        ATARIHW_ANNOUNCE(CODEC, "CODEC Sound");
 633        ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)");
 634        ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)");
 635        ATARIHW_ANNOUNCE(ACSI, "ACSI Interface");
 636        ATARIHW_ANNOUNCE(IDE, "IDE Interface");
 637        ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC");
 638        ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901");
 639        ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901");
 640        ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530");
 641        ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230");
 642        ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface");
 643        ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface");
 644        ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)");
 645        ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)");
 646        ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380");
 647        ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC");
 648        ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A");
 649        ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15");
 650        ATARIHW_ANNOUNCE(SCU, "System Control Unit");
 651        ATARIHW_ANNOUNCE(BLITTER, "Blitter");
 652        ATARIHW_ANNOUNCE(VME, "VME Bus");
 653        ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor");
 654}
 655
 656/*
 657 * MSch: initial platform device support for Atari,
 658 * required for EtherNAT/EtherNEC/NetUSBee drivers
 659 */
 660
 661#if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC)
 662static void isp1160_delay(struct device *dev, int delay)
 663{
 664        ndelay(delay);
 665}
 666#endif
 667
 668#ifdef CONFIG_ATARI_ETHERNAT
 669/*
 670 * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver
 671 */
 672
 673#define ATARI_ETHERNAT_IRQ              140
 674
 675static struct resource smc91x_resources[] = {
 676        [0] = {
 677                .name   = "smc91x-regs",
 678                .start  = ATARI_ETHERNAT_PHYS_ADDR,
 679                .end    = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff,
 680                .flags  = IORESOURCE_MEM,
 681        },
 682        [1] = {
 683                .name   = "smc91x-irq",
 684                .start  = ATARI_ETHERNAT_IRQ,
 685                .end    = ATARI_ETHERNAT_IRQ,
 686                .flags  = IORESOURCE_IRQ,
 687        },
 688};
 689
 690static struct platform_device smc91x_device = {
 691        .name           = "smc91x",
 692        .id             = -1,
 693        .num_resources  = ARRAY_SIZE(smc91x_resources),
 694        .resource       = smc91x_resources,
 695};
 696
 697/*
 698 * ISP 1160 - using the isp116x-hcd module
 699 */
 700
 701#define ATARI_USB_PHYS_ADDR     0x80000012
 702#define ATARI_USB_IRQ           139
 703
 704static struct resource isp1160_resources[] = {
 705        [0] = {
 706                .name   = "isp1160-data",
 707                .start  = ATARI_USB_PHYS_ADDR,
 708                .end    = ATARI_USB_PHYS_ADDR + 0x1,
 709                .flags  = IORESOURCE_MEM,
 710        },
 711        [1] = {
 712                .name   = "isp1160-regs",
 713                .start  = ATARI_USB_PHYS_ADDR + 0x4,
 714                .end    = ATARI_USB_PHYS_ADDR + 0x5,
 715                .flags  = IORESOURCE_MEM,
 716        },
 717        [2] = {
 718                .name   = "isp1160-irq",
 719                .start  = ATARI_USB_IRQ,
 720                .end    = ATARI_USB_IRQ,
 721                .flags  = IORESOURCE_IRQ,
 722        },
 723};
 724
 725/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
 726static struct isp116x_platform_data isp1160_platform_data = {
 727        /* Enable internal resistors on downstream ports */
 728        .sel15Kres              = 1,
 729        /* On-chip overcurrent protection */
 730        .oc_enable              = 1,
 731        /* INT output polarity */
 732        .int_act_high           = 1,
 733        /* INT edge or level triggered */
 734        .int_edge_triggered     = 0,
 735
 736        /* WAKEUP pin connected - NOT SUPPORTED  */
 737        /* .remote_wakeup_connected = 0, */
 738        /* Wakeup by devices on usb bus enabled */
 739        .remote_wakeup_enable   = 0,
 740        .delay                  = isp1160_delay,
 741};
 742
 743static struct platform_device isp1160_device = {
 744        .name           = "isp116x-hcd",
 745        .id             = 0,
 746        .num_resources  = ARRAY_SIZE(isp1160_resources),
 747        .resource       = isp1160_resources,
 748        .dev                    = {
 749                .platform_data  = &isp1160_platform_data,
 750        },
 751};
 752
 753static struct platform_device *atari_ethernat_devices[] __initdata = {
 754        &smc91x_device,
 755        &isp1160_device
 756};
 757#endif /* CONFIG_ATARI_ETHERNAT */
 758
 759#ifdef CONFIG_ATARI_ETHERNEC
 760/*
 761 * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset,
 762 * handled by ne.c driver
 763 */
 764
 765#define ATARI_ETHERNEC_PHYS_ADDR        0xfffa0000
 766#define ATARI_ETHERNEC_BASE             0x300
 767#define ATARI_ETHERNEC_IRQ              IRQ_MFP_TIMER1
 768
 769static struct resource rtl8019_resources[] = {
 770        [0] = {
 771                .name   = "rtl8019-regs",
 772                .start  = ATARI_ETHERNEC_BASE,
 773                .end    = ATARI_ETHERNEC_BASE + 0x20 - 1,
 774                .flags  = IORESOURCE_IO,
 775        },
 776        [1] = {
 777                .name   = "rtl8019-irq",
 778                .start  = ATARI_ETHERNEC_IRQ,
 779                .end    = ATARI_ETHERNEC_IRQ,
 780                .flags  = IORESOURCE_IRQ,
 781        },
 782};
 783
 784static struct platform_device rtl8019_device = {
 785        .name           = "ne",
 786        .id             = -1,
 787        .num_resources  = ARRAY_SIZE(rtl8019_resources),
 788        .resource       = rtl8019_resources,
 789};
 790
 791/*
 792 * NetUSBee: ISP1160 USB host adapter via ROM-port adapter
 793 */
 794
 795#define ATARI_NETUSBEE_PHYS_ADDR        0xfffa8000
 796#define ATARI_NETUSBEE_BASE             0x340
 797#define ATARI_NETUSBEE_IRQ              IRQ_MFP_TIMER2
 798
 799static struct resource netusbee_resources[] = {
 800        [0] = {
 801                .name   = "isp1160-data",
 802                .start  = ATARI_NETUSBEE_BASE,
 803                .end    = ATARI_NETUSBEE_BASE + 0x1,
 804                .flags  = IORESOURCE_MEM,
 805        },
 806        [1] = {
 807                .name   = "isp1160-regs",
 808                .start  = ATARI_NETUSBEE_BASE + 0x20,
 809                .end    = ATARI_NETUSBEE_BASE + 0x21,
 810                .flags  = IORESOURCE_MEM,
 811        },
 812        [2] = {
 813                .name   = "isp1160-irq",
 814                .start  = ATARI_NETUSBEE_IRQ,
 815                .end    = ATARI_NETUSBEE_IRQ,
 816                .flags  = IORESOURCE_IRQ,
 817        },
 818};
 819
 820/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
 821static struct isp116x_platform_data netusbee_platform_data = {
 822        /* Enable internal resistors on downstream ports */
 823        .sel15Kres              = 1,
 824        /* On-chip overcurrent protection */
 825        .oc_enable              = 1,
 826        /* INT output polarity */
 827        .int_act_high           = 1,
 828        /* INT edge or level triggered */
 829        .int_edge_triggered     = 0,
 830
 831        /* WAKEUP pin connected - NOT SUPPORTED  */
 832        /* .remote_wakeup_connected = 0, */
 833        /* Wakeup by devices on usb bus enabled */
 834        .remote_wakeup_enable   = 0,
 835        .delay                  = isp1160_delay,
 836};
 837
 838static struct platform_device netusbee_device = {
 839        .name           = "isp116x-hcd",
 840        .id             = 1,
 841        .num_resources  = ARRAY_SIZE(netusbee_resources),
 842        .resource       = netusbee_resources,
 843        .dev                    = {
 844                .platform_data  = &netusbee_platform_data,
 845        },
 846};
 847
 848static struct platform_device *atari_netusbee_devices[] __initdata = {
 849        &rtl8019_device,
 850        &netusbee_device
 851};
 852#endif /* CONFIG_ATARI_ETHERNEC */
 853
 854#if IS_ENABLED(CONFIG_ATARI_SCSI)
 855static const struct resource atari_scsi_st_rsrc[] __initconst = {
 856        {
 857                .flags = IORESOURCE_IRQ,
 858                .start = IRQ_MFP_FSCSI,
 859                .end   = IRQ_MFP_FSCSI,
 860        },
 861};
 862
 863static const struct resource atari_scsi_tt_rsrc[] __initconst = {
 864        {
 865                .flags = IORESOURCE_IRQ,
 866                .start = IRQ_TT_MFP_SCSI,
 867                .end   = IRQ_TT_MFP_SCSI,
 868        },
 869};
 870#endif
 871
 872/*
 873 * Falcon IDE interface
 874 */
 875
 876#define FALCON_IDE_BASE 0xfff00000
 877
 878static const struct resource atari_falconide_rsrc[] __initconst = {
 879        {
 880                .flags = IORESOURCE_MEM,
 881                .start = FALCON_IDE_BASE,
 882                .end   = FALCON_IDE_BASE + 0x39,
 883        },
 884        {
 885                .flags = IORESOURCE_IRQ,
 886                .start = IRQ_MFP_FSCSI,
 887                .end   = IRQ_MFP_FSCSI,
 888        },
 889};
 890
 891int __init atari_platform_init(void)
 892{
 893        struct platform_device *pdev;
 894        int rv = 0;
 895
 896        if (!MACH_IS_ATARI)
 897                return -ENODEV;
 898
 899#ifdef CONFIG_ATARI_ETHERNAT
 900        {
 901                unsigned char *enatc_virt;
 902                enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
 903                if (hwreg_present(enatc_virt)) {
 904                        rv = platform_add_devices(atari_ethernat_devices,
 905                                                ARRAY_SIZE(atari_ethernat_devices));
 906                }
 907                iounmap(enatc_virt);
 908        }
 909#endif
 910
 911#ifdef CONFIG_ATARI_ETHERNEC
 912        {
 913                int error;
 914                unsigned char *enec_virt;
 915                enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf);
 916                if (hwreg_present(enec_virt)) {
 917                        error = platform_add_devices(atari_netusbee_devices,
 918                                                ARRAY_SIZE(atari_netusbee_devices));
 919                        if (error && !rv)
 920                                rv = error;
 921                }
 922                iounmap(enec_virt);
 923        }
 924#endif
 925
 926#if IS_ENABLED(CONFIG_ATARI_SCSI)
 927        if (ATARIHW_PRESENT(ST_SCSI))
 928                platform_device_register_simple("atari_scsi", -1,
 929                        atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc));
 930        else if (ATARIHW_PRESENT(TT_SCSI))
 931                platform_device_register_simple("atari_scsi", -1,
 932                        atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc));
 933#endif
 934
 935        if (ATARIHW_PRESENT(IDE)) {
 936                pdev = platform_device_register_simple("atari-falcon-ide", -1,
 937                        atari_falconide_rsrc, ARRAY_SIZE(atari_falconide_rsrc));
 938                if (IS_ERR(pdev))
 939                        rv = PTR_ERR(pdev);
 940        }
 941
 942        return rv;
 943}
 944
 945arch_initcall(atari_platform_init);
 946