ar71xx_chip.c revision 223562
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: head/sys/mips/atheros/ar71xx_chip.c 223562 2011-06-26 10:07:48Z kevlo $"); 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 56#include <mips/atheros/ar71xx_chip.h> 57 58#include <mips/atheros/ar71xx_cpudef.h> 59 60#include <mips/sentry5/s5reg.h> 61 62/* XXX these should replace the current definitions in ar71xxreg.h */ 63/* XXX perhaps an ar71xx_chip.h header file? */ 64#define AR71XX_PLL_REG_CPU_CONFIG AR71XX_PLL_CPU_BASE + 0x00 65#define AR71XX_PLL_REG_SEC_CONFIG AR71XX_PLL_CPU_BASE + 0x04 66#define AR71XX_PLL_REG_ETH0_INT_CLOCK AR71XX_PLL_CPU_BASE + 0x10 67#define AR71XX_PLL_REG_ETH1_INT_CLOCK AR71XX_PLL_CPU_BASE + 0x14 68 69#define AR71XX_PLL_DIV_SHIFT 3 70#define AR71XX_PLL_DIV_MASK 0x1f 71#define AR71XX_CPU_DIV_SHIFT 16 72#define AR71XX_CPU_DIV_MASK 0x3 73#define AR71XX_DDR_DIV_SHIFT 18 74#define AR71XX_DDR_DIV_MASK 0x3 75#define AR71XX_AHB_DIV_SHIFT 20 76#define AR71XX_AHB_DIV_MASK 0x7 77 78/* XXX these shouldn't be in here - this file is a per-chip file */ 79/* XXX these should be in the top-level ar71xx type, not ar71xx -chip */ 80uint32_t u_ar71xx_cpu_freq; 81uint32_t u_ar71xx_ahb_freq; 82uint32_t u_ar71xx_ddr_freq; 83 84static void 85ar71xx_chip_detect_mem_size(void) 86{ 87} 88 89static void 90ar71xx_chip_detect_sys_frequency(void) 91{ 92 uint32_t pll; 93 uint32_t freq; 94 uint32_t div; 95 96 pll = ATH_READ_REG(AR71XX_PLL_REG_CPU_CONFIG); 97 98 div = ((pll >> AR71XX_PLL_DIV_SHIFT) & AR71XX_PLL_DIV_MASK) + 1; 99 freq = div * AR71XX_BASE_FREQ; 100 101 div = ((pll >> AR71XX_CPU_DIV_SHIFT) & AR71XX_CPU_DIV_MASK) + 1; 102 u_ar71xx_cpu_freq = freq / div; 103 104 div = ((pll >> AR71XX_DDR_DIV_SHIFT) & AR71XX_DDR_DIV_MASK) + 1; 105 u_ar71xx_ddr_freq = freq / div; 106 107 div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2; 108 u_ar71xx_ahb_freq = u_ar71xx_cpu_freq / div; 109} 110 111/* 112 * This does not lock the CPU whilst doing the work! 113 */ 114static void 115ar71xx_chip_device_stop(uint32_t mask) 116{ 117 uint32_t reg; 118 119 reg = ATH_READ_REG(AR71XX_RST_RESET); 120 ATH_WRITE_REG(AR71XX_RST_RESET, reg | mask); 121} 122 123static void 124ar71xx_chip_device_start(uint32_t mask) 125{ 126 uint32_t reg; 127 128 reg = ATH_READ_REG(AR71XX_RST_RESET); 129 ATH_WRITE_REG(AR71XX_RST_RESET, reg & ~mask); 130} 131 132static int 133ar71xx_chip_device_stopped(uint32_t mask) 134{ 135 uint32_t reg; 136 137 reg = ATH_READ_REG(AR71XX_RST_RESET); 138 return ((reg & mask) == mask); 139} 140 141/* Speed is either 10, 100 or 1000 */ 142static void 143ar71xx_chip_set_pll_ge0(int speed) 144{ 145 uint32_t pll; 146 147 switch(speed) { 148 case 10: 149 pll = PLL_ETH_INT_CLK_10; 150 break; 151 case 100: 152 pll = PLL_ETH_INT_CLK_100; 153 break; 154 case 1000: 155 pll = PLL_ETH_INT_CLK_1000; 156 break; 157 default: 158 printf("ar71xx_chip_set_pll_ge0: invalid speed %d\n", speed); 159 return; 160 } 161 162 ar71xx_write_pll(AR71XX_PLL_SEC_CONFIG, AR71XX_PLL_ETH_INT0_CLK, pll, AR71XX_PLL_ETH0_SHIFT); 163} 164 165static void 166ar71xx_chip_set_pll_ge1(int speed) 167{ 168 uint32_t pll; 169 170 switch(speed) { 171 case 10: 172 pll = PLL_ETH_INT_CLK_10; 173 break; 174 case 100: 175 pll = PLL_ETH_INT_CLK_100; 176 break; 177 case 1000: 178 pll = PLL_ETH_INT_CLK_1000; 179 break; 180 default: 181 printf("ar71xx_chip_set_pll_ge1: invalid speed %d\n", speed); 182 return; 183 } 184 185 ar71xx_write_pll(AR71XX_PLL_SEC_CONFIG, AR71XX_PLL_ETH_INT1_CLK, pll, AR71XX_PLL_ETH1_SHIFT); 186} 187 188static void 189ar71xx_chip_ddr_flush_ge0(void) 190{ 191 ar71xx_ddr_flush(AR71XX_WB_FLUSH_GE0); 192} 193 194static void 195ar71xx_chip_ddr_flush_ge1(void) 196{ 197 ar71xx_ddr_flush(AR71XX_WB_FLUSH_GE1); 198} 199 200static void 201ar71xx_chip_ddr_flush_ip2(void) 202{ 203 ar71xx_ddr_flush(AR71XX_WB_FLUSH_PCI); 204} 205 206static uint32_t 207ar71xx_chip_get_eth_pll(unsigned int mac, int speed) 208{ 209 return 0; 210} 211 212static void 213ar71xx_chip_init_usb_peripheral(void) 214{ 215 ar71xx_device_stop(RST_RESET_USB_OHCI_DLL | RST_RESET_USB_HOST | RST_RESET_USB_PHY); 216 DELAY(1000); 217 218 ar71xx_device_start(RST_RESET_USB_OHCI_DLL | RST_RESET_USB_HOST | RST_RESET_USB_PHY); 219 DELAY(1000); 220 221 ATH_WRITE_REG(AR71XX_USB_CTRL_CONFIG, 222 USB_CTRL_CONFIG_OHCI_DES_SWAP | USB_CTRL_CONFIG_OHCI_BUF_SWAP | 223 USB_CTRL_CONFIG_EHCI_DES_SWAP | USB_CTRL_CONFIG_EHCI_BUF_SWAP); 224 225 ATH_WRITE_REG(AR71XX_USB_CTRL_FLADJ, 226 (32 << USB_CTRL_FLADJ_HOST_SHIFT) | (3 << USB_CTRL_FLADJ_A5_SHIFT)); 227 228 DELAY(1000); 229} 230 231struct ar71xx_cpu_def ar71xx_chip_def = { 232 &ar71xx_chip_detect_mem_size, 233 &ar71xx_chip_detect_sys_frequency, 234 &ar71xx_chip_device_stop, 235 &ar71xx_chip_device_start, 236 &ar71xx_chip_device_stopped, 237 &ar71xx_chip_set_pll_ge0, 238 &ar71xx_chip_set_pll_ge1, 239 &ar71xx_chip_ddr_flush_ge0, 240 &ar71xx_chip_ddr_flush_ge1, 241 &ar71xx_chip_get_eth_pll, 242 &ar71xx_chip_ddr_flush_ip2, 243 &ar71xx_chip_init_usb_peripheral, 244}; 245