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

     /*-
      * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice unmodified, this list of conditions, and the following
     *    disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include "opt_ar71xx.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    
    #include <sys/bus.h>
    #include <sys/interrupt.h>
    #include <sys/malloc.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/rman.h>
    #include <sys/lock.h>
    #include <sys/mutex.h>
    
    #include <vm/vm.h>
    #include <vm/pmap.h>
    #include <vm/vm_extern.h>
    
    #include <machine/bus.h>
    #include <machine/cpu.h>
    #include <machine/intr_machdep.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcireg.h>
    
    #include <dev/pci/pcib_private.h>
    #include "pcib_if.h"
    
    #include <mips/atheros/ar71xxreg.h>
    #include <mips/atheros/ar71xx_pci_bus_space.h>
    
    #include <mips/atheros/ar71xx_cpudef.h>
    
    #include <sys/linker.h>
    #include <sys/firmware.h>
    
    #include <mips/atheros/ar71xx_fixup.h>
    
    /*
     * Take a copy of the EEPROM contents and squirrel it away in a firmware.
     * The SPI flash will eventually cease to be memory-mapped, so we need
     * to take a copy of this before the SPI driver initialises.
     */
    void
    ar71xx_pci_slot_create_eeprom_firmware(device_t dev, u_int bus, u_int slot,
        u_int func, long int flash_addr, int size)
    {
            char buf[64];
            uint16_t *cal_data = (uint16_t *) MIPS_PHYS_TO_KSEG1(flash_addr);
            void *eeprom = NULL;
            const struct firmware *fw = NULL;
    
            device_printf(dev, "EEPROM firmware: 0x%lx @ %d bytes\n",
                flash_addr, size);
    
            eeprom = malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
            if (! eeprom) {
                    device_printf(dev,
                                "%s: malloc failed for '%s', aborting EEPROM\n",
                                __func__, buf);
                            return;
            }
    
            memcpy(eeprom, cal_data, size);
    
            /*
             * Generate a flash EEPROM 'firmware' from the given memory
             * region.  Since the SPI controller will eventually
             * go into port-IO mode instead of memory-mapped IO
            * mode, a copy of the EEPROM contents is required.
            */
           snprintf(buf, sizeof(buf), "%s.%d.bus.%d.%d.%d.eeprom_firmware",
               device_get_name(dev), device_get_unit(dev), bus, slot, func);
           fw = firmware_register(buf, eeprom, size, 1, NULL);
           if (fw == NULL) {
                   device_printf(dev, "%s: firmware_register (%s) failed\n",
                       __func__, buf);
                   free(eeprom, M_DEVBUF);
                   return;
           }
           device_printf(dev, "device EEPROM '%s' registered\n", buf);
   }
   
   #if 0
   static void
   ar71xx_pci_slot_fixup(device_t dev, u_int bus, u_int slot, u_int func)
   {
           long int flash_addr;
           char buf[64];
           int size;
   
           /*
            * Check whether the given slot has a hint to poke.
            */
           if (bootverbose)
           device_printf(dev, "%s: checking dev %s, %d/%d/%d\n",
               __func__, device_get_nameunit(dev), bus, slot, func);
   
           snprintf(buf, sizeof(buf), "bus.%d.%d.%d.ath_fixup_addr",
               bus, slot, func);
   
           if (resource_long_value(device_get_name(dev), device_get_unit(dev),
               buf, &flash_addr) == 0) {
                   snprintf(buf, sizeof(buf), "bus.%d.%d.%d.ath_fixup_size",
                       bus, slot, func);
                   if (resource_int_value(device_get_name(dev),
                       device_get_unit(dev), buf, &size) != 0) {
                           device_printf(dev,
                               "%s: missing hint '%s', aborting EEPROM\n",
                               __func__, buf);
                           return;
                   }
   
   
                   device_printf(dev, "found EEPROM at 0x%lx on %d.%d.%d\n",
                       flash_addr, bus, slot, func);
                   ar71xx_pci_fixup(dev, bus, slot, func, flash_addr, size);
                   ar71xx_pci_slot_create_eeprom_firmware(dev, bus, slot, func,
                       flash_addr, size);
           }
   }
   #endif /* 0 */

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