The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/atheros/ar71xx_fixup.c

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    1 /*-
    2  * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice unmodified, this list of conditions, and the following
   10  *    disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/10.4/sys/mips/atheros/ar71xx_fixup.c 234485 2012-04-20 08:26:05Z adrian $");
   30 
   31 #include "opt_ar71xx.h"
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 
   36 #include <sys/bus.h>
   37 #include <sys/interrupt.h>
   38 #include <sys/malloc.h>
   39 #include <sys/kernel.h>
   40 #include <sys/module.h>
   41 #include <sys/rman.h>
   42 #include <sys/lock.h>
   43 #include <sys/mutex.h>
   44 
   45 #include <vm/vm.h>
   46 #include <vm/pmap.h>
   47 #include <vm/vm_extern.h>
   48 
   49 #include <machine/bus.h>
   50 #include <machine/cpu.h>
   51 #include <machine/intr_machdep.h>
   52 #include <machine/pmap.h>
   53 
   54 #include <dev/pci/pcivar.h>
   55 #include <dev/pci/pcireg.h>
   56 
   57 #include <dev/pci/pcib_private.h>
   58 #include "pcib_if.h"
   59 
   60 #include <mips/atheros/ar71xxreg.h>
   61 #include <mips/atheros/ar71xx_pci_bus_space.h>
   62 
   63 #include <mips/atheros/ar71xx_cpudef.h>
   64 
   65 #include <sys/linker.h>
   66 #include <sys/firmware.h>
   67 
   68 #include <mips/atheros/ar71xx_fixup.h>
   69 
   70 /*
   71  * Take a copy of the EEPROM contents and squirrel it away in a firmware.
   72  * The SPI flash will eventually cease to be memory-mapped, so we need
   73  * to take a copy of this before the SPI driver initialises.
   74  */
   75 void
   76 ar71xx_pci_slot_create_eeprom_firmware(device_t dev, u_int bus, u_int slot,
   77     u_int func, long int flash_addr, int size)
   78 {
   79         char buf[64];
   80         uint16_t *cal_data = (uint16_t *) MIPS_PHYS_TO_KSEG1(flash_addr);
   81         void *eeprom = NULL;
   82         const struct firmware *fw = NULL;
   83 
   84         device_printf(dev, "EEPROM firmware: 0x%lx @ %d bytes\n",
   85             flash_addr, size);
   86 
   87         eeprom = malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
   88         if (! eeprom) {
   89                 device_printf(dev,
   90                             "%s: malloc failed for '%s', aborting EEPROM\n",
   91                             __func__, buf);
   92                         return;
   93         }
   94 
   95         memcpy(eeprom, cal_data, size);
   96 
   97         /*
   98          * Generate a flash EEPROM 'firmware' from the given memory
   99          * region.  Since the SPI controller will eventually
  100          * go into port-IO mode instead of memory-mapped IO
  101          * mode, a copy of the EEPROM contents is required.
  102          */
  103         snprintf(buf, sizeof(buf), "%s.%d.bus.%d.%d.%d.eeprom_firmware",
  104             device_get_name(dev), device_get_unit(dev), bus, slot, func);
  105         fw = firmware_register(buf, eeprom, size, 1, NULL);
  106         if (fw == NULL) {
  107                 device_printf(dev, "%s: firmware_register (%s) failed\n",
  108                     __func__, buf);
  109                 free(eeprom, M_DEVBUF);
  110                 return;
  111         }
  112         device_printf(dev, "device EEPROM '%s' registered\n", buf);
  113 }
  114 
  115 #if 0
  116 static void
  117 ar71xx_pci_slot_fixup(device_t dev, u_int bus, u_int slot, u_int func)
  118 {
  119         long int flash_addr;
  120         char buf[64];
  121         int size;
  122 
  123         /*
  124          * Check whether the given slot has a hint to poke.
  125          */
  126         if (bootverbose)
  127         device_printf(dev, "%s: checking dev %s, %d/%d/%d\n",
  128             __func__, device_get_nameunit(dev), bus, slot, func);
  129 
  130         snprintf(buf, sizeof(buf), "bus.%d.%d.%d.ath_fixup_addr",
  131             bus, slot, func);
  132 
  133         if (resource_long_value(device_get_name(dev), device_get_unit(dev),
  134             buf, &flash_addr) == 0) {
  135                 snprintf(buf, sizeof(buf), "bus.%d.%d.%d.ath_fixup_size",
  136                     bus, slot, func);
  137                 if (resource_int_value(device_get_name(dev),
  138                     device_get_unit(dev), buf, &size) != 0) {
  139                         device_printf(dev,
  140                             "%s: missing hint '%s', aborting EEPROM\n",
  141                             __func__, buf);
  142                         return;
  143                 }
  144 
  145 
  146                 device_printf(dev, "found EEPROM at 0x%lx on %d.%d.%d\n",
  147                     flash_addr, bus, slot, func);
  148                 ar71xx_pci_fixup(dev, bus, slot, func, flash_addr, size);
  149                 ar71xx_pci_slot_create_eeprom_firmware(dev, bus, slot, func,
  150                     flash_addr, size);
  151         }
  152 }
  153 #endif /* 0 */

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