1/*- 2 * Copyright (c) 2017, Adrian Chadd <adrian@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("$FreeBSD$"); 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 44#include <vm/vm.h> 45#include <vm/pmap.h> 46#include <vm/vm_extern.h> 47 48#include <machine/bus.h> 49#include <machine/cpu.h> 50#include <machine/intr_machdep.h> 51 52#include <sys/linker.h> 53#include <sys/firmware.h> 54 55struct ar71xx_caldata_softc { 56 device_t sc_dev; 57}; 58 59static int 60ar71xx_caldata_probe(device_t dev) 61{ 62 63 return (BUS_PROBE_NOWILDCARD); 64} 65 66/* XXX TODO: unify with what's in ar71xx_fixup.c */ 67 68/* 69 * Create a calibration block from memory mapped SPI data for use by 70 * various drivers. Right now it's just ath(4) but later board support 71 * will include 802.11ac NICs with calibration data in NOR flash. 72 * 73 * (Yes, there are a handful of QCA MIPS boards with QCA9880v2 802.11ac chips 74 * with calibration data in flash..) 75 */ 76static void 77ar71xx_platform_create_cal_data(device_t dev, int id, long int flash_addr, 78 int size) 79{ 80 char buf[64]; 81 uint16_t *cal_data = (uint16_t *) MIPS_PHYS_TO_KSEG1(flash_addr); 82 void *eeprom = NULL; 83 const struct firmware *fw = NULL; 84 85 device_printf(dev, "EEPROM firmware: 0x%lx @ %d bytes\n", 86 flash_addr, size); 87 88 eeprom = malloc(size, M_DEVBUF, M_WAITOK | M_ZERO); 89 if (! eeprom) { 90 device_printf(dev, "%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 */ 103 104 snprintf(buf, sizeof(buf), "%s.%d.map.%d.eeprom_firmware", 105 device_get_name(dev), 106 device_get_unit(dev), 107 id); 108 109 fw = firmware_register(buf, eeprom, size, 1, NULL); 110 if (fw == NULL) { 111 device_printf(dev, "%s: firmware_register (%s) failed\n", 112 __func__, buf); 113 free(eeprom, M_DEVBUF); 114 return; 115 } 116 device_printf(dev, "device EEPROM '%s' registered\n", buf); 117} 118 119/* 120 * Iterate through a list of early-boot hints creating calibration 121 * data firmware chunks for AHB (ie, non-PCI) devices with calibration 122 * data. 123 */ 124static int 125ar71xx_platform_check_eeprom_hints(device_t dev) 126{ 127 char buf[64]; 128 long int addr; 129 int size; 130 int i; 131 132 for (i = 0; i < 8; i++) { 133 snprintf(buf, sizeof(buf), "map.%d.ath_fixup_addr", i); 134 if (resource_long_value(device_get_name(dev), 135 device_get_unit(dev), buf, &addr) != 0) 136 break; 137 snprintf(buf, sizeof(buf), "map.%d.ath_fixup_size", i); 138 if (resource_int_value(device_get_name(dev), 139 device_get_unit(dev), buf, &size) != 0) 140 break; 141 device_printf(dev, "map.%d.ath_fixup_addr=0x%08x; size=%d\n", 142 i, (int) addr, size); 143 (void) ar71xx_platform_create_cal_data(dev, i, addr, size); 144 } 145 146 return (0); 147} 148 149static int 150ar71xx_caldata_attach(device_t dev) 151{ 152 153 device_add_child(dev, "nexus", -1); 154 ar71xx_platform_check_eeprom_hints(dev); 155 return (bus_generic_attach(dev)); 156} 157 158static device_method_t ar71xx_caldata_methods[] = { 159 /* Device interface */ 160 DEVMETHOD(device_probe, ar71xx_caldata_probe), 161 DEVMETHOD(device_attach, ar71xx_caldata_attach), 162 DEVMETHOD(device_shutdown, bus_generic_shutdown), 163 DEVMETHOD(device_suspend, bus_generic_suspend), 164 DEVMETHOD(device_resume, bus_generic_resume), 165 DEVMETHOD_END 166}; 167 168static driver_t ar71xx_caldata_driver = { 169 "ar71xx_caldata", 170 ar71xx_caldata_methods, 171 sizeof(struct ar71xx_caldata_softc), 172}; 173 174static devclass_t ar71xx_caldata_devclass; 175 176DRIVER_MODULE(ar71xx_caldata, nexus, ar71xx_caldata_driver, ar71xx_caldata_devclass, 0, 0); 177