octeon_ebt3000_cf.c

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    1 /***********************license start***************
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  *  Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
    5  *  reserved.
    6  *
    7  *
    8  *  Redistribution and use in source and binary forms, with or without
    9  *  modification, are permitted provided that the following conditions are
   10  *  met:
   11  *
   12  *      * Redistributions of source code must retain the above copyright
   13  *        notice, this list of conditions and the following disclaimer.
   14  *
   15  *      * Redistributions in binary form must reproduce the above
   16  *        copyright notice, this list of conditions and the following
   17  *        disclaimer in the documentation and/or other materials provided
   18  *        with the distribution.
   19  *
   20  *      * Neither the name of Cavium Networks nor the names of
   21  *        its contributors may be used to endorse or promote products
   22  *        derived from this software without specific prior written
   23  *        permission.
   24  *
   25  *  TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
   26  *  AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
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   38  *
   39  ***********************license end**************************************/
   40 
   41 /*
   42  *  octeon_ebt3000_cf.c
   43  *
   44  */
   45 
   46 #include <sys/cdefs.h>
   47 __FBSDID("$FreeBSD$");
   48 
   49 #include <sys/param.h>
   50 #include <sys/bio.h>
   51 #include <sys/systm.h>
   52 #include <sys/sysctl.h>
   53 #include <sys/ata.h>
   54 #include <sys/bus.h>
   55 #include <sys/kernel.h>
   56 #include <sys/module.h>
   57 #include <sys/rman.h>
   58 #include <sys/power.h>
   59 #include <sys/smp.h>
   60 #include <sys/time.h>
   61 #include <sys/timetc.h>
   62 #include <sys/malloc.h>
   63 
   64 #include <geom/geom.h>
   65 
   66 #include <machine/clock.h>
   67 #include <machine/locore.h>
   68 #include <machine/md_var.h>
   69 #include <machine/cpuregs.h>
   70 
   71 #include <mips/cavium/octeon_pcmap_regs.h>
   72 
   73 #include <contrib/octeon-sdk/cvmx.h>
   74 
   75 /* ATA Commands */
   76 #define CMD_READ_SECTOR         0x20
   77 #define CMD_WRITE_SECTOR        0x30
   78 #define CMD_IDENTIFY            0xEC
   79 
   80 /* The ATA Task File */
   81 #define TF_DATA                 0x00
   82 #define TF_ERROR                0x01
   83 #define TF_PRECOMP              0x01
   84 #define TF_SECTOR_COUNT         0x02
   85 #define TF_SECTOR_NUMBER        0x03
   86 #define TF_CYL_LSB              0x04
   87 #define TF_CYL_MSB              0x05
   88 #define TF_DRV_HEAD             0x06
   89 #define TF_STATUS               0x07
   90 #define TF_COMMAND              0x07
   91 
   92 /* Status Register */
   93 #define STATUS_BSY              0x80    /* Drive is busy */
   94 #define STATUS_RDY              0x40    /* Drive is ready */
   95 #define STATUS_DF               0x20    /* Device fault */
   96 #define STATUS_DRQ              0x08    /* Data can be transferred */
   97 
   98 /* Miscelaneous */
   99 #define SECTOR_SIZE             512
  100 #define WAIT_DELAY              1000
  101 #define NR_TRIES                1000
  102 #define SWAP_SHORT(x)           ((x << 8) | (x >> 8))
  103 #define MODEL_STR_SIZE          40
  104 
  105 /* Globals */
  106 /*
  107  * There's three bus types supported by this driver.
  108  *
  109  * CF_8 -- Traditional PC Card IDE interface on an 8-bit wide bus.  We assume
  110  * the bool loader has configure attribute memory properly.  We then access
  111  * the device like old-school 8-bit IDE card (which is all a traditional PC Card
  112  * interface really is).
  113  * CF_16 -- Traditional PC Card IDE interface on a 16-bit wide bus.  Registers on
  114  * this bus are 16-bits wide too.  When accessing registers in the task file, you
  115  * have to do it in 16-bit chunks, and worry about masking out what you don't want
  116  * or ORing together the traditional 8-bit values.  We assume the bootloader does
  117  * the right attribute memory initialization dance.
  118  * CF_TRUE_IDE_8 - CF Card wired to True IDE mode.  There's no Attribute memory
  119  * space at all.  Instead all the traditional 8-bit registers are there, but
  120  * on a 16-bit bus where addr0 isn't wired.  This means we need to read/write them
  121  * 16-bit chunks, but only the lower 8 bits are valid.  We do not (and can not)
  122  * access this like CF_16 with the comingled registers.  Yet we can't access
  123  * this like CF_8 because of the register offset.  Except the TF_DATA register
  124  * appears to be full width?
  125  */
  126 void    *base_addr;
  127 int     bus_type;
  128 #define CF_8            1       /* 8-bit bus, no offsets - PC Card */
  129 #define CF_16           2       /* 16-bit bus, registers shared - PC Card */
  130 #define CF_TRUE_IDE_8   3       /* 16-bit bus, only lower 8-bits, TrueIDE */
  131 const char *const cf_type[] = {
  132         "impossible type",
  133         "CF 8-bit",
  134         "CF 16-bit",
  135         "True IDE"
  136 };
  137 
  138 /* Device parameters */
  139 struct drive_param{
  140         union {
  141                 char buf[SECTOR_SIZE];
  142                 struct ata_params driveid;
  143         } u;
  144 
  145         char model[MODEL_STR_SIZE];
  146         uint32_t nr_sectors;
  147         uint16_t sector_size;
  148         uint16_t heads;
  149         uint16_t tracks;
  150         uint16_t sec_track;
  151 };
  152 
  153 /* Device softc */
  154 struct cf_priv {
  155         device_t dev;
  156         struct drive_param drive_param;
  157 
  158         struct bio_queue_head cf_bq;
  159         struct g_geom *cf_geom;
  160         struct g_provider *cf_provider;
  161 
  162 };
  163 
  164 /* GEOM class implementation */
  165 static g_access_t       cf_access;
  166 static g_start_t        cf_start;
  167 static g_ioctl_t        cf_ioctl;
  168 
  169 struct g_class g_cf_class = {
  170         .name =         "CF",
  171         .version =      G_VERSION,
  172         .start =        cf_start,
  173         .access =       cf_access,
  174         .ioctl =        cf_ioctl,
  175 };
  176 
  177 DECLARE_GEOM_CLASS(g_cf_class, g_cf);
  178 
  179 /* Device methods */
  180 static int      cf_probe(device_t);
  181 static void     cf_identify(driver_t *, device_t);
  182 static int      cf_attach(device_t);
  183 static void     cf_attach_geom(void *, int);
  184 
  185 /* ATA methods */
  186 static int      cf_cmd_identify(struct cf_priv *);
  187 static int      cf_cmd_write(uint32_t, uint32_t, void *);
  188 static int      cf_cmd_read(uint32_t, uint32_t, void *);
  189 static int      cf_wait_busy(void);
  190 static int      cf_send_cmd(uint32_t, uint8_t);
  191 
  192 /* Miscelenous */
  193 static void     cf_swap_ascii(unsigned char[], char[]);
  194 
  195 /* ------------------------------------------------------------------- *
  196  *                      cf_access()                                    *
  197  * ------------------------------------------------------------------- */
  198 static int cf_access (struct g_provider *pp, int r, int w, int e)
  199 {
  200         return (0);
  201 }
  202 
  203 /* ------------------------------------------------------------------- *
  204  *                      cf_start()                                     *
  205  * ------------------------------------------------------------------- */
  206 static void cf_start (struct bio *bp)
  207 {
  208         struct cf_priv *cf_priv;
  209         int error;
  210 
  211         cf_priv = bp->bio_to->geom->softc;
  212 
  213         /*
  214         * Handle actual I/O requests. The request is passed down through
  215         * the bio struct.
  216         */
  217 
  218         switch (bp->bio_cmd) {
  219         case BIO_GETATTR:
  220                 if (g_handleattr_int(bp, "GEOM::fwsectors", cf_priv->drive_param.sec_track))
  221                         return;
  222                 if (g_handleattr_int(bp, "GEOM::fwheads", cf_priv->drive_param.heads))
  223                         return;
  224                 g_io_deliver(bp, ENOIOCTL);
  225                 return;
  226 
  227         case BIO_READ:
  228                 error = cf_cmd_read(bp->bio_length / cf_priv->drive_param.sector_size,
  229                     bp->bio_offset / cf_priv->drive_param.sector_size, bp->bio_data);
  230                 break;
  231         case BIO_WRITE:
  232                 error = cf_cmd_write(bp->bio_length / cf_priv->drive_param.sector_size,
  233                     bp->bio_offset/cf_priv->drive_param.sector_size, bp->bio_data);
  234                 break;
  235 
  236         default:
  237                 printf("%s: unrecognized bio_cmd %x.\n", __func__, bp->bio_cmd);
  238                 error = ENOTSUP;
  239                 break;
  240         }
  241 
  242         if (error != 0) {
  243                 g_io_deliver(bp, error);
  244                 return;
  245         }
  246 
  247         bp->bio_resid = 0;
  248         bp->bio_completed = bp->bio_length;
  249         g_io_deliver(bp, 0);
  250 }
  251 
  252 static int cf_ioctl (struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td)
  253 {
  254         return (0);
  255 }
  256 
  257 static uint8_t cf_inb_8(int port)
  258 {
  259         /*
  260          * Traditional 8-bit PC Card/CF bus access.
  261          */
  262         if (bus_type == CF_8) {
  263                 volatile uint8_t *task_file = (volatile uint8_t *)base_addr;
  264                 return task_file[port];
  265         }
  266 
  267         /*
  268          * True IDE access.  lower 8 bits on a 16-bit bus (see above).
  269          */
  270         volatile uint16_t *task_file = (volatile uint16_t *)base_addr;
  271         return task_file[port] & 0xff;
  272 }
  273 
  274 static void cf_outb_8(int port, uint8_t val)
  275 {
  276         /*
  277          * Traditional 8-bit PC Card/CF bus access.
  278          */
  279         if (bus_type == CF_8) {
  280                 volatile uint8_t *task_file = (volatile uint8_t *)base_addr;
  281                 task_file[port] = val;
  282                 return;
  283         }
  284 
  285         /*
  286          * True IDE access.  lower 8 bits on a 16-bit bus (see above).
  287          */
  288         volatile uint16_t *task_file = (volatile uint16_t *)base_addr;
  289         task_file[port] = val & 0xff;
  290 }
  291 
  292 static uint8_t cf_inb_16(int port)
  293 {
  294         volatile uint16_t *task_file = (volatile uint16_t *)base_addr;
  295         uint16_t val = task_file[port / 2];
  296         if (port & 1)
  297                 return (val >> 8) & 0xff;
  298         return val & 0xff;
  299 }
  300 
  301 static uint16_t cf_inw_16(int port)
  302 {
  303         volatile uint16_t *task_file = (volatile uint16_t *)base_addr;
  304         uint16_t val = task_file[port / 2];
  305         return val;
  306 }
  307 
  308 static void cf_outw_16(int port, uint16_t val)
  309 {
  310         volatile uint16_t *task_file = (volatile uint16_t *)base_addr;
  311         task_file[port / 2] = val;
  312 }
  313 
  314 /* ------------------------------------------------------------------- *
  315  *                      cf_cmd_read()                                  *
  316  * ------------------------------------------------------------------- *
  317  *
  318  *  Read nr_sectors from the device starting from start_sector.
  319  */
  320 static int cf_cmd_read (uint32_t nr_sectors, uint32_t start_sector, void *buf)
  321 {
  322         unsigned long lba;
  323         uint32_t count;
  324         uint16_t *ptr_16;
  325         uint8_t  *ptr_8;
  326         int error;
  327 
  328         ptr_8  = (uint8_t*)buf;
  329         ptr_16 = (uint16_t*)buf;
  330         lba = start_sector; 
  331 
  332         while (nr_sectors--) {
  333                 error = cf_send_cmd(lba, CMD_READ_SECTOR);
  334                 if (error != 0) {
  335                         printf("%s: cf_send_cmd(CMD_READ_SECTOR) failed: %d\n", __func__, error);
  336                         return (error);
  337                 }
  338 
  339                 switch (bus_type)
  340                 {
  341                 case CF_8:
  342                         for (count = 0; count < SECTOR_SIZE; count++) {
  343                                 *ptr_8++ = cf_inb_8(TF_DATA);
  344                                 if ((count & 0xf) == 0)
  345                                         (void)cf_inb_8(TF_STATUS);
  346                         }
  347                         break;
  348                 case CF_TRUE_IDE_8:
  349                 case CF_16:
  350                 default:
  351                         for (count = 0; count < SECTOR_SIZE; count+=2) {
  352                                 uint16_t temp;
  353                                 temp = cf_inw_16(TF_DATA);
  354                                 *ptr_16++ = SWAP_SHORT(temp);
  355                                 if ((count & 0xf) == 0)
  356                                         (void)cf_inb_16(TF_STATUS);
  357                         }
  358                         break;
  359                 }  
  360 
  361                 lba++;
  362         }
  363         return (0);
  364 }
  365 
  366 /* ------------------------------------------------------------------- *
  367  *                      cf_cmd_write()                                 *
  368  * ------------------------------------------------------------------- *
  369  *
  370  * Write nr_sectors to the device starting from start_sector.
  371  */
  372 static int cf_cmd_write (uint32_t nr_sectors, uint32_t start_sector, void *buf)
  373 {
  374         uint32_t lba;
  375         uint32_t count;
  376         uint16_t *ptr_16;
  377         uint8_t  *ptr_8;
  378         int error;
  379 
  380         lba = start_sector;
  381         ptr_8  = (uint8_t*)buf;
  382         ptr_16 = (uint16_t*)buf;
  383 
  384         while (nr_sectors--) {
  385                 error = cf_send_cmd(lba, CMD_WRITE_SECTOR);
  386                 if (error != 0) {
  387                         printf("%s: cf_send_cmd(CMD_WRITE_SECTOR) failed: %d\n", __func__, error);
  388                         return (error);
  389                 }
  390 
  391                 switch (bus_type)
  392                 {
  393                 case CF_8:
  394                         for (count = 0; count < SECTOR_SIZE; count++) {
  395                                 cf_outb_8(TF_DATA, *ptr_8++);
  396                                 if ((count & 0xf) == 0)
  397                                         (void)cf_inb_8(TF_STATUS);
  398                         }
  399                         break;
  400                 case CF_TRUE_IDE_8:
  401                 case CF_16:
  402                 default:
  403                         for (count = 0; count < SECTOR_SIZE; count+=2) {
  404                                 uint16_t temp = *ptr_16++;
  405                                 cf_outw_16(TF_DATA, SWAP_SHORT(temp));
  406                                 if ((count & 0xf) == 0)
  407                                         (void)cf_inb_16(TF_STATUS);
  408                         }
  409                         break;
  410                 } 
  411 
  412                 lba++;
  413         }
  414         return (0);
  415 }
  416 
  417 /* ------------------------------------------------------------------- *
  418  *                      cf_cmd_identify()                              *
  419  * ------------------------------------------------------------------- *
  420  *
  421  * Read parameters and other information from the drive and store 
  422  * it in the drive_param structure
  423  *
  424  */
  425 static int cf_cmd_identify(struct cf_priv *cf_priv)
  426 {
  427         int count;
  428         int error;
  429 
  430         error = cf_send_cmd(0, CMD_IDENTIFY);
  431         if (error != 0) {
  432                 printf("%s: identify failed: %d\n", __func__, error);
  433                 return (error);
  434         }
  435         switch (bus_type)
  436         {
  437         case CF_8:
  438                 for (count = 0; count < SECTOR_SIZE; count++) 
  439                         cf_priv->drive_param.u.buf[count] = cf_inb_8(TF_DATA);
  440                 break;
  441         case CF_TRUE_IDE_8:
  442         case CF_16:
  443         default:
  444                 for (count = 0; count < SECTOR_SIZE; count += 2) {
  445                         uint16_t temp;
  446                         temp = cf_inw_16(TF_DATA);
  447                                 
  448                         /* endianess will be swapped below */
  449                         cf_priv->drive_param.u.buf[count]   = (temp & 0xff);
  450                         cf_priv->drive_param.u.buf[count + 1] = (temp & 0xff00) >> 8;
  451                 }
  452                 break;
  453         }
  454 
  455         cf_swap_ascii(cf_priv->drive_param.u.driveid.model, cf_priv->drive_param.model);
  456 
  457         cf_priv->drive_param.sector_size =  512;   //=  SWAP_SHORT (cf_priv->drive_param.u.driveid.sector_bytes);
  458         cf_priv->drive_param.heads      =  SWAP_SHORT (cf_priv->drive_param.u.driveid.current_heads);
  459         cf_priv->drive_param.tracks     =  SWAP_SHORT (cf_priv->drive_param.u.driveid.current_cylinders); 
  460         cf_priv->drive_param.sec_track   =  SWAP_SHORT (cf_priv->drive_param.u.driveid.current_sectors);
  461         cf_priv->drive_param.nr_sectors  = (uint32_t)SWAP_SHORT (cf_priv->drive_param.u.driveid.lba_size_1) |
  462             ((uint32_t)SWAP_SHORT (cf_priv->drive_param.u.driveid.lba_size_2));
  463         if (bootverbose) {
  464                 printf("    model %s\n", cf_priv->drive_param.model);
  465                 printf("    heads %d tracks %d sec_tracks %d sectors %d\n",
  466                         cf_priv->drive_param.heads, cf_priv->drive_param.tracks,
  467                         cf_priv->drive_param.sec_track, cf_priv->drive_param.nr_sectors);
  468         }
  469 
  470         return (0);
  471 }
  472 
  473 /* ------------------------------------------------------------------- *
  474  *                      cf_send_cmd()                                  *
  475  * ------------------------------------------------------------------- *
  476  *
  477  * Send command to read/write one sector specified by lba.
  478  *
  479  */
  480 static int cf_send_cmd (uint32_t lba, uint8_t cmd)
  481 {
  482         switch (bus_type)
  483         {
  484         case CF_8:
  485         case CF_TRUE_IDE_8:
  486                 while (cf_inb_8(TF_STATUS) & STATUS_BSY)
  487                         DELAY(WAIT_DELAY);
  488                 cf_outb_8(TF_SECTOR_COUNT, 1);
  489                 cf_outb_8(TF_SECTOR_NUMBER, lba & 0xff);
  490                 cf_outb_8(TF_CYL_LSB, (lba >> 8) & 0xff);
  491                 cf_outb_8(TF_CYL_MSB, (lba >> 16) & 0xff);
  492                 cf_outb_8(TF_DRV_HEAD, ((lba >> 24) & 0xff) | 0xe0);
  493                 cf_outb_8(TF_COMMAND, cmd);
  494                 break;
  495         case CF_16:
  496         default:
  497                 while (cf_inb_16(TF_STATUS) & STATUS_BSY)
  498                         DELAY(WAIT_DELAY);
  499                 cf_outw_16(TF_SECTOR_COUNT, 1 | ((lba & 0xff) << 8));
  500                 cf_outw_16(TF_CYL_LSB, ((lba >> 8) & 0xff) | (((lba >> 16) & 0xff) << 8));
  501                 cf_outw_16(TF_DRV_HEAD, (((lba >> 24) & 0xff) | 0xe0) | (cmd << 8));
  502                 break;
  503         }
  504 
  505         return (cf_wait_busy());
  506 }
  507 
  508 /* ------------------------------------------------------------------- *
  509  *                      cf_wait_busy()                                 *
  510  * ------------------------------------------------------------------- *
  511  *
  512  * Wait until the drive finishes a given command and data is
  513  * ready to be transferred. This is done by repeatedly checking 
  514  * the BSY bit of the status register. When the controller is ready for
  515  * data transfer, it clears the BSY bit and sets the DRQ bit.
  516  *
  517  * If the DF bit is ever set, we return error.
  518  *
  519  * This code originally spun on DRQ.  If that behavior turns out to be
  520  * necessary, a flag can be added or this function can be called
  521  * repeatedly as long as it is returning ENXIO.
  522  */
  523 static int cf_wait_busy (void)
  524 {
  525         uint8_t status;
  526 
  527         switch (bus_type)
  528         {
  529         case CF_8:
  530         case CF_TRUE_IDE_8:
  531                 status = cf_inb_8(TF_STATUS);
  532                 while ((status & STATUS_BSY) == STATUS_BSY) {
  533                         if ((status & STATUS_DF) != 0) {
  534                                 printf("%s: device fault (status=%x)\n", __func__, status);
  535                                 return (EIO);
  536                         }
  537                         DELAY(WAIT_DELAY);
  538                         status = cf_inb_8(TF_STATUS);
  539                 }
  540                 break;
  541         case CF_16:
  542         default:
  543                 status = cf_inb_16(TF_STATUS);
  544                 while ((status & STATUS_BSY) == STATUS_BSY) {
  545                         if ((status & STATUS_DF) != 0) {
  546                                 printf("%s: device fault (status=%x)\n", __func__, status);
  547                                 return (EIO);
  548                         }
  549                         DELAY(WAIT_DELAY);
  550                         status = cf_inb_16(TF_STATUS);
  551                 }
  552                 break;
  553         }
  554 
  555         /* DRQ is only for when read data is actually available; check BSY */
  556         /* Some vendors do assert DRQ, but not all. Check BSY instead. */
  557         if (status & STATUS_BSY) {
  558                 printf("%s: device not ready (status=%x)\n", __func__, status);
  559                 return (ENXIO);
  560         }
  561 
  562         return (0);
  563 }
  564 
  565 /* ------------------------------------------------------------------- *
  566  *                      cf_swap_ascii()                                *
  567  * ------------------------------------------------------------------- *
  568  *
  569  * The ascii string returned by the controller specifying 
  570  * the model of the drive is byte-swaped. This routine 
  571  * corrects the byte ordering.
  572  *
  573  */
  574 static void cf_swap_ascii (unsigned char str1[], char str2[])
  575 {
  576         int i;
  577 
  578         for(i = 0; i < MODEL_STR_SIZE; i++)
  579                 str2[i] = str1[i ^ 1];
  580 }
  581 
  582 /* ------------------------------------------------------------------- *
  583  *                      cf_probe()                                     *
  584  * ------------------------------------------------------------------- */
  585 
  586 static int cf_probe (device_t dev)
  587 {
  588         if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
  589                 return (ENXIO);
  590 
  591         if (device_get_unit(dev) != 0) {
  592                 panic("can't attach more devices\n");
  593         }
  594 
  595         device_set_desc(dev, "Octeon Compact Flash Driver");
  596 
  597         return (BUS_PROBE_NOWILDCARD);
  598 }
  599 
  600 /* ------------------------------------------------------------------- *
  601  *                      cf_identify()                                  *
  602  * ------------------------------------------------------------------- *
  603  *
  604  * Find the bootbus region for the CF to determine 
  605  * 16 or 8 bit and check to see if device is 
  606  * inserted.
  607  *
  608  */
  609 static void cf_identify (driver_t *drv, device_t parent)
  610 {
  611         int bus_region;
  612         int count = 0;
  613         cvmx_mio_boot_reg_cfgx_t cfg;
  614         uint64_t phys_base;
  615 
  616         if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
  617                 return;
  618 
  619         phys_base = cvmx_sysinfo_get()->compact_flash_common_base_addr;
  620         if (phys_base == 0)
  621                 return;
  622         base_addr = cvmx_phys_to_ptr(phys_base);
  623 
  624         for (bus_region = 0; bus_region < 8; bus_region++)
  625         {
  626                 cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(bus_region));
  627                 if (cfg.s.base == phys_base >> 16)
  628                 {
  629                         if (cvmx_sysinfo_get()->compact_flash_attribute_base_addr == 0)
  630                                 bus_type = CF_TRUE_IDE_8;
  631                         else
  632                                 bus_type = (cfg.s.width) ? CF_16 : CF_8;
  633                         printf("Compact flash found in bootbus region %d (%s).\n", bus_region, cf_type[bus_type]);
  634                         break;
  635                 }
  636         }
  637 
  638         switch (bus_type)
  639         {
  640         case CF_8:
  641         case CF_TRUE_IDE_8:
  642                 /* Check if CF is inserted */
  643                 while (cf_inb_8(TF_STATUS) & STATUS_BSY) {
  644                         if ((count++) == NR_TRIES ) {
  645                                 printf("Compact Flash not present\n");
  646                                 return;
  647                         }
  648                         DELAY(WAIT_DELAY);
  649                 }
  650                 break;
  651         case CF_16:
  652         default:
  653                 /* Check if CF is inserted */
  654                 while (cf_inb_16(TF_STATUS) & STATUS_BSY) {
  655                         if ((count++) == NR_TRIES ) {
  656                                 printf("Compact Flash not present\n");
  657                                 return;
  658                         }
  659                         DELAY(WAIT_DELAY);
  660                 }
  661                 break;
  662         }
  663 
  664         BUS_ADD_CHILD(parent, 0, "cf", 0);
  665 }
  666 
  667 /* ------------------------------------------------------------------- *
  668  *                      cf_attach_geom()                               *
  669  * ------------------------------------------------------------------- */
  670 
  671 static void cf_attach_geom (void *arg, int flag)
  672 {
  673         struct cf_priv *cf_priv;
  674 
  675         cf_priv = (struct cf_priv *) arg;
  676         cf_priv->cf_geom = g_new_geomf(&g_cf_class, "cf%d", device_get_unit(cf_priv->dev));
  677         cf_priv->cf_geom->softc = cf_priv;
  678         cf_priv->cf_provider = g_new_providerf(cf_priv->cf_geom, "%s",
  679             cf_priv->cf_geom->name);
  680         cf_priv->cf_provider->sectorsize = cf_priv->drive_param.sector_size;
  681         cf_priv->cf_provider->mediasize = cf_priv->drive_param.nr_sectors * cf_priv->cf_provider->sectorsize;
  682         g_error_provider(cf_priv->cf_provider, 0);
  683 }
  684 
  685 /* ------------------------------------------------------------------- *
  686  *                      cf_attach()                                    *
  687  * ------------------------------------------------------------------- */
  688 
  689 static int cf_attach (device_t dev)
  690 {
  691         struct cf_priv *cf_priv;
  692         int error;
  693 
  694         if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
  695                 return (ENXIO);
  696 
  697         cf_priv = device_get_softc(dev);
  698         cf_priv->dev = dev;
  699 
  700         error = cf_cmd_identify(cf_priv);
  701         if (error != 0) {
  702                 device_printf(dev, "cf_cmd_identify failed: %d\n", error);
  703                 return (error);
  704         }
  705 
  706         g_post_event(cf_attach_geom, cf_priv, M_WAITOK, NULL);
  707         bioq_init(&cf_priv->cf_bq);
  708 
  709         return 0;
  710 }
  711 
  712 static device_method_t cf_methods[] = {
  713         /* Device interface */
  714         DEVMETHOD(device_probe,         cf_probe),
  715         DEVMETHOD(device_identify,      cf_identify),
  716         DEVMETHOD(device_attach,        cf_attach),
  717         DEVMETHOD(device_detach,        bus_generic_detach),
  718         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  719         { 0, 0 }
  720 };
  721 
  722 static driver_t cf_driver = {
  723         "cf", 
  724         cf_methods, 
  725         sizeof(struct cf_priv)
  726 };
  727 
  728 static devclass_t cf_devclass;
  729 
  730 DRIVER_MODULE(cf, nexus, cf_driver, cf_devclass, 0, 0);
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FreeBSD/Linux Kernel Cross Reference sys/mips/cavium/octeon_ebt3000_cf.c

FreeBSD/Linux Kernel Cross Reference
sys/mips/cavium/octeon_ebt3000_cf.c
