ar71xx_chip.c revision 234941
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 234941 2012-05-03 05:52:39Z adrian $"); 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_chip.h> 56#include <mips/atheros/ar71xx_cpudef.h> 57 58#include <mips/sentry5/s5reg.h> 59 60/* XXX these should replace the current definitions in ar71xxreg.h */ 61/* XXX perhaps an ar71xx_chip.h header file? */ 62#define AR71XX_PLL_REG_CPU_CONFIG AR71XX_PLL_CPU_BASE + 0x00 63#define AR71XX_PLL_REG_SEC_CONFIG AR71XX_PLL_CPU_BASE + 0x04 64#define AR71XX_PLL_REG_ETH0_INT_CLOCK AR71XX_PLL_CPU_BASE + 0x10 65#define AR71XX_PLL_REG_ETH1_INT_CLOCK AR71XX_PLL_CPU_BASE + 0x14 66 67#define AR71XX_PLL_DIV_SHIFT 3 68#define AR71XX_PLL_DIV_MASK 0x1f 69#define AR71XX_CPU_DIV_SHIFT 16 70#define AR71XX_CPU_DIV_MASK 0x3 71#define AR71XX_DDR_DIV_SHIFT 18 72#define AR71XX_DDR_DIV_MASK 0x3 73#define AR71XX_AHB_DIV_SHIFT 20 74#define AR71XX_AHB_DIV_MASK 0x7 75 76/* XXX these shouldn't be in here - this file is a per-chip file */ 77/* XXX these should be in the top-level ar71xx type, not ar71xx -chip */ 78uint32_t u_ar71xx_cpu_freq; 79uint32_t u_ar71xx_ahb_freq; 80uint32_t u_ar71xx_ddr_freq; 81 82static void 83ar71xx_chip_detect_mem_size(void) 84{ 85} 86 87static void 88ar71xx_chip_detect_sys_frequency(void) 89{ 90 uint32_t pll; 91 uint32_t freq; 92 uint32_t div; 93 94 pll = ATH_READ_REG(AR71XX_PLL_REG_CPU_CONFIG); 95 96 div = ((pll >> AR71XX_PLL_DIV_SHIFT) & AR71XX_PLL_DIV_MASK) + 1; 97 freq = div * AR71XX_BASE_FREQ; 98 99 div = ((pll >> AR71XX_CPU_DIV_SHIFT) & AR71XX_CPU_DIV_MASK) + 1; 100 u_ar71xx_cpu_freq = freq / div; 101 102 div = ((pll >> AR71XX_DDR_DIV_SHIFT) & AR71XX_DDR_DIV_MASK) + 1; 103 u_ar71xx_ddr_freq = freq / div; 104 105 div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2; 106 u_ar71xx_ahb_freq = u_ar71xx_cpu_freq / div; 107} 108 109/* 110 * This does not lock the CPU whilst doing the work! 111 */ 112static void 113ar71xx_chip_device_stop(uint32_t mask) 114{ 115 uint32_t reg; 116 117 reg = ATH_READ_REG(AR71XX_RST_RESET); 118 ATH_WRITE_REG(AR71XX_RST_RESET, reg | mask); 119} 120 121static void 122ar71xx_chip_device_start(uint32_t mask) 123{ 124 uint32_t reg; 125 126 reg = ATH_READ_REG(AR71XX_RST_RESET); 127 ATH_WRITE_REG(AR71XX_RST_RESET, reg & ~mask); 128} 129 130static int 131ar71xx_chip_device_stopped(uint32_t mask) 132{ 133 uint32_t reg; 134 135 reg = ATH_READ_REG(AR71XX_RST_RESET); 136 return ((reg & mask) == mask); 137} 138 139void 140ar71xx_chip_set_mii_speed(uint32_t unit, uint32_t speed) 141{ 142 uint32_t val, reg, ctrl; 143 144 switch (unit) { 145 case 0: 146 reg = AR71XX_MII0_CTRL; 147 break; 148 case 1: 149 reg = AR71XX_MII1_CTRL; 150 break; 151 default: 152 printf("%s: invalid MII unit set for arge unit: %d\n", 153 __func__, unit); 154 return; 155 } 156 157 switch (speed) { 158 case 10: 159 ctrl = MII_CTRL_SPEED_10; 160 break; 161 case 100: 162 ctrl = MII_CTRL_SPEED_100; 163 break; 164 case 1000: 165 ctrl = MII_CTRL_SPEED_1000; 166 break; 167 default: 168 printf("%s: invalid MII speed (%d) set for arge unit: %d\n", 169 __func__, speed, unit); 170 return; 171 } 172 173 val = ATH_READ_REG(reg); 174 val &= ~(MII_CTRL_SPEED_MASK << MII_CTRL_SPEED_SHIFT); 175 val |= (ctrl & MII_CTRL_SPEED_MASK) << MII_CTRL_SPEED_SHIFT; 176 ATH_WRITE_REG(reg, val); 177} 178 179void 180ar71xx_chip_set_mii_if(uint32_t unit, uint32_t mii_mode) 181{ 182 uint32_t val, reg, mii_if; 183 184 switch (unit) { 185 case 0: 186 reg = AR71XX_MII0_CTRL; 187 if (mii_mode == AR71XX_MII_MODE_GMII) 188 mii_if = MII0_CTRL_IF_GMII; 189 else if (mii_mode == AR71XX_MII_MODE_MII) 190 mii_if = MII0_CTRL_IF_MII; 191 else if (mii_mode == AR71XX_MII_MODE_RGMII) 192 mii_if = MII0_CTRL_IF_RGMII; 193 else if (mii_mode == AR71XX_MII_MODE_RMII) 194 mii_if = MII0_CTRL_IF_RMII; 195 else { 196 printf("%s: invalid MII mode (%d) for unit %d\n", 197 __func__, mii_mode, unit); 198 return; 199 } 200 break; 201 case 1: 202 reg = AR71XX_MII1_CTRL; 203 if (mii_mode == AR71XX_MII_MODE_RGMII) 204 mii_if = MII1_CTRL_IF_RGMII; 205 else if (mii_mode == AR71XX_MII_MODE_RMII) 206 mii_if = MII1_CTRL_IF_RMII; 207 else { 208 printf("%s: invalid MII mode (%d) for unit %d\n", 209 __func__, mii_mode, unit); 210 return; 211 } 212 break; 213 default: 214 printf("%s: invalid MII unit set for arge unit: %d\n", 215 __func__, unit); 216 return; 217 } 218 219 val = ATH_READ_REG(reg); 220 val &= ~(MII_CTRL_IF_MASK << MII_CTRL_IF_SHIFT); 221 val |= (mii_if & MII_CTRL_IF_MASK) << MII_CTRL_IF_SHIFT; 222 ATH_WRITE_REG(reg, val); 223} 224 225/* Speed is either 10, 100 or 1000 */ 226static void 227ar71xx_chip_set_pll_ge(int unit, int speed, uint32_t pll) 228{ 229 230 switch (unit) { 231 case 0: 232 ar71xx_write_pll(AR71XX_PLL_SEC_CONFIG, 233 AR71XX_PLL_ETH_INT0_CLK, pll, 234 AR71XX_PLL_ETH0_SHIFT); 235 break; 236 case 1: 237 ar71xx_write_pll(AR71XX_PLL_SEC_CONFIG, 238 AR71XX_PLL_ETH_INT1_CLK, pll, 239 AR71XX_PLL_ETH1_SHIFT); 240 break; 241 default: 242 printf("%s: invalid PLL set for arge unit: %d\n", 243 __func__, unit); 244 return; 245 } 246} 247 248static void 249ar71xx_chip_ddr_flush_ge(int unit) 250{ 251 252 switch (unit) { 253 case 0: 254 ar71xx_ddr_flush(AR71XX_WB_FLUSH_GE0); 255 break; 256 case 1: 257 ar71xx_ddr_flush(AR71XX_WB_FLUSH_GE1); 258 break; 259 default: 260 printf("%s: invalid DDR flush for arge unit: %d\n", 261 __func__, unit); 262 return; 263 } 264} 265 266static void 267ar71xx_chip_ddr_flush_ip2(void) 268{ 269 ar71xx_ddr_flush(AR71XX_WB_FLUSH_PCI); 270} 271 272static uint32_t 273ar71xx_chip_get_eth_pll(unsigned int mac, int speed) 274{ 275 uint32_t pll; 276 277 switch (speed) { 278 case 10: 279 pll = PLL_ETH_INT_CLK_10; 280 break; 281 case 100: 282 pll = PLL_ETH_INT_CLK_100; 283 break; 284 case 1000: 285 pll = PLL_ETH_INT_CLK_1000; 286 break; 287 default: 288 printf("%s%d: invalid speed %d\n", __func__, mac, speed); 289 pll = 0; 290 } 291 292 return (pll); 293} 294 295static void 296ar71xx_chip_init_usb_peripheral(void) 297{ 298 299 ar71xx_device_stop(RST_RESET_USB_OHCI_DLL | 300 RST_RESET_USB_HOST | RST_RESET_USB_PHY); 301 DELAY(1000); 302 303 ar71xx_device_start(RST_RESET_USB_OHCI_DLL | 304 RST_RESET_USB_HOST | RST_RESET_USB_PHY); 305 DELAY(1000); 306 307 ATH_WRITE_REG(AR71XX_USB_CTRL_CONFIG, 308 USB_CTRL_CONFIG_OHCI_DES_SWAP | 309 USB_CTRL_CONFIG_OHCI_BUF_SWAP | 310 USB_CTRL_CONFIG_EHCI_DES_SWAP | 311 USB_CTRL_CONFIG_EHCI_BUF_SWAP); 312 313 ATH_WRITE_REG(AR71XX_USB_CTRL_FLADJ, 314 (32 << USB_CTRL_FLADJ_HOST_SHIFT) | 315 (3 << USB_CTRL_FLADJ_A5_SHIFT)); 316 317 DELAY(1000); 318} 319 320struct ar71xx_cpu_def ar71xx_chip_def = { 321 &ar71xx_chip_detect_mem_size, 322 &ar71xx_chip_detect_sys_frequency, 323 &ar71xx_chip_device_stop, 324 &ar71xx_chip_device_start, 325 &ar71xx_chip_device_stopped, 326 &ar71xx_chip_set_pll_ge, 327 &ar71xx_chip_set_mii_speed, 328 &ar71xx_chip_set_mii_if, 329 &ar71xx_chip_ddr_flush_ge, 330 &ar71xx_chip_get_eth_pll, 331 &ar71xx_chip_ddr_flush_ip2, 332 &ar71xx_chip_init_usb_peripheral, 333}; 334