1/*- 2 * Copyright (c) 2010 Adrian Chadd 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, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include "opt_ddb.h" 31 32#include <sys/param.h> 33#include <sys/conf.h> 34#include <sys/kernel.h> 35#include <sys/systm.h> 36#include <sys/bus.h> 37#include <sys/cons.h> 38#include <sys/kdb.h> 39#include <sys/reboot.h> 40 41#include <vm/vm.h> 42#include <vm/vm_page.h> 43 44#include <net/ethernet.h> 45 46#include <machine/clock.h> 47#include <machine/cpu.h> 48#include <machine/cpuregs.h> 49#include <machine/hwfunc.h> 50#include <machine/md_var.h> 51#include <machine/trap.h> 52#include <machine/vmparam.h> 53 54#include <mips/atheros/ar71xxreg.h> 55#include <mips/atheros/ar71xx_cpudef.h> 56#include <mips/atheros/ar71xx_chip.h> 57#include <mips/atheros/ar91xxreg.h> 58#include <mips/atheros/ar91xx_chip.h> 59 60static void 61ar91xx_chip_detect_mem_size(void) 62{ 63} 64 65static void 66ar91xx_chip_detect_sys_frequency(void) 67{ 68 uint32_t pll; 69 uint32_t freq; 70 uint32_t div; 71 72 u_ar71xx_mdio_freq = u_ar71xx_refclk = AR91XX_BASE_FREQ; 73 74 pll = ATH_READ_REG(AR91XX_PLL_REG_CPU_CONFIG); 75 76 div = ((pll >> AR91XX_PLL_DIV_SHIFT) & AR91XX_PLL_DIV_MASK); 77 freq = div * AR91XX_BASE_FREQ; 78 u_ar71xx_cpu_freq = freq; 79 80 div = ((pll >> AR91XX_DDR_DIV_SHIFT) & AR91XX_DDR_DIV_MASK) + 1; 81 u_ar71xx_ddr_freq = freq / div; 82 83 div = (((pll >> AR91XX_AHB_DIV_SHIFT) & AR91XX_AHB_DIV_MASK) + 1) * 2; 84 u_ar71xx_ahb_freq = u_ar71xx_cpu_freq / div; 85 u_ar71xx_uart_freq = u_ar71xx_cpu_freq / div; 86 u_ar71xx_wdt_freq = u_ar71xx_cpu_freq / div; 87} 88 89static void 90ar91xx_chip_device_stop(uint32_t mask) 91{ 92 uint32_t reg; 93 94 reg = ATH_READ_REG(AR91XX_RESET_REG_RESET_MODULE); 95 ATH_WRITE_REG(AR91XX_RESET_REG_RESET_MODULE, reg | mask); 96} 97 98static void 99ar91xx_chip_device_start(uint32_t mask) 100{ 101 uint32_t reg; 102 103 reg = ATH_READ_REG(AR91XX_RESET_REG_RESET_MODULE); 104 ATH_WRITE_REG(AR91XX_RESET_REG_RESET_MODULE, reg & ~mask); 105} 106 107static int 108ar91xx_chip_device_stopped(uint32_t mask) 109{ 110 uint32_t reg; 111 112 reg = ATH_READ_REG(AR91XX_RESET_REG_RESET_MODULE); 113 return ((reg & mask) == mask); 114} 115 116static void 117ar91xx_chip_set_pll_ge(int unit, int speed, uint32_t pll) 118{ 119 120 switch (unit) { 121 case 0: 122 ar71xx_write_pll(AR91XX_PLL_REG_ETH_CONFIG, 123 AR91XX_PLL_REG_ETH0_INT_CLOCK, pll, 124 AR91XX_ETH0_PLL_SHIFT); 125 break; 126 case 1: 127 ar71xx_write_pll(AR91XX_PLL_REG_ETH_CONFIG, 128 AR91XX_PLL_REG_ETH1_INT_CLOCK, pll, 129 AR91XX_ETH1_PLL_SHIFT); 130 break; 131 default: 132 printf("%s: invalid PLL set for arge unit: %d\n", 133 __func__, unit); 134 return; 135 } 136} 137 138static void 139ar91xx_chip_ddr_flush(ar71xx_flush_ddr_id_t id) 140{ 141 142 switch (id) { 143 case AR71XX_CPU_DDR_FLUSH_GE0: 144 ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE0); 145 break; 146 case AR71XX_CPU_DDR_FLUSH_GE1: 147 ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE1); 148 break; 149 case AR71XX_CPU_DDR_FLUSH_USB: 150 ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_USB); 151 break; 152 case AR71XX_CPU_DDR_FLUSH_WMAC: 153 ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_WMAC); 154 break; 155 default: 156 printf("%s: invalid DDR flush id (%d)\n", __func__, id); 157 break; 158 } 159} 160 161static uint32_t 162ar91xx_chip_get_eth_pll(unsigned int mac, int speed) 163{ 164 uint32_t pll; 165 166 switch(speed) { 167 case 10: 168 pll = AR91XX_PLL_VAL_10; 169 break; 170 case 100: 171 pll = AR91XX_PLL_VAL_100; 172 break; 173 case 1000: 174 pll = AR91XX_PLL_VAL_1000; 175 break; 176 default: 177 printf("%s%d: invalid speed %d\n", __func__, mac, speed); 178 pll = 0; 179 } 180 181 return (pll); 182} 183 184static void 185ar91xx_chip_init_usb_peripheral(void) 186{ 187 188 ar71xx_device_stop(AR91XX_RST_RESET_MODULE_USBSUS_OVERRIDE); 189 DELAY(100); 190 191 ar71xx_device_start(RST_RESET_USB_HOST); 192 DELAY(100); 193 194 ar71xx_device_start(RST_RESET_USB_PHY); 195 DELAY(100); 196 197 /* Wireless */ 198 ar71xx_device_stop(AR91XX_RST_RESET_MODULE_AMBA2WMAC); 199 DELAY(1000); 200 201 ar71xx_device_start(AR91XX_RST_RESET_MODULE_AMBA2WMAC); 202 DELAY(1000); 203} 204 205struct ar71xx_cpu_def ar91xx_chip_def = { 206 &ar91xx_chip_detect_mem_size, 207 &ar91xx_chip_detect_sys_frequency, 208 &ar91xx_chip_device_stop, 209 &ar91xx_chip_device_start, 210 &ar91xx_chip_device_stopped, 211 &ar91xx_chip_set_pll_ge, 212 &ar71xx_chip_set_mii_speed, 213 &ar71xx_chip_set_mii_if, 214 &ar91xx_chip_get_eth_pll, 215 &ar91xx_chip_ddr_flush, 216 &ar91xx_chip_init_usb_peripheral, 217}; 218