ar71xx_chip.c revision 302190
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 302190 2016-06-25 04:34:54Z landonf $"); 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/* XXX these should replace the current definitions in ar71xxreg.h */ 59/* XXX perhaps an ar71xx_chip.h header file? */ 60#define AR71XX_PLL_REG_CPU_CONFIG AR71XX_PLL_CPU_BASE + 0x00 61#define AR71XX_PLL_REG_SEC_CONFIG AR71XX_PLL_CPU_BASE + 0x04 62#define AR71XX_PLL_REG_ETH0_INT_CLOCK AR71XX_PLL_CPU_BASE + 0x10 63#define AR71XX_PLL_REG_ETH1_INT_CLOCK AR71XX_PLL_CPU_BASE + 0x14 64 65#define AR71XX_PLL_DIV_SHIFT 3 66#define AR71XX_PLL_DIV_MASK 0x1f 67#define AR71XX_CPU_DIV_SHIFT 16 68#define AR71XX_CPU_DIV_MASK 0x3 69#define AR71XX_DDR_DIV_SHIFT 18 70#define AR71XX_DDR_DIV_MASK 0x3 71#define AR71XX_AHB_DIV_SHIFT 20 72#define AR71XX_AHB_DIV_MASK 0x7 73 74/* XXX these shouldn't be in here - this file is a per-chip file */ 75/* XXX these should be in the top-level ar71xx type, not ar71xx -chip */ 76uint32_t u_ar71xx_cpu_freq; 77uint32_t u_ar71xx_ahb_freq; 78uint32_t u_ar71xx_ddr_freq; 79uint32_t u_ar71xx_uart_freq; 80uint32_t u_ar71xx_wdt_freq; 81uint32_t u_ar71xx_refclk; 82uint32_t u_ar71xx_mdio_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 u_ar71xx_mdio_freq = u_ar71xx_refclk = AR71XX_BASE_FREQ; 97 98 pll = ATH_READ_REG(AR71XX_PLL_REG_CPU_CONFIG); 99 100 div = ((pll >> AR71XX_PLL_DIV_SHIFT) & AR71XX_PLL_DIV_MASK) + 1; 101 freq = div * AR71XX_BASE_FREQ; 102 103 div = ((pll >> AR71XX_CPU_DIV_SHIFT) & AR71XX_CPU_DIV_MASK) + 1; 104 u_ar71xx_cpu_freq = freq / div; 105 106 div = ((pll >> AR71XX_DDR_DIV_SHIFT) & AR71XX_DDR_DIV_MASK) + 1; 107 u_ar71xx_ddr_freq = freq / div; 108 109 div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2; 110 u_ar71xx_ahb_freq = u_ar71xx_cpu_freq / div; 111 u_ar71xx_wdt_freq = u_ar71xx_cpu_freq / div; 112 u_ar71xx_uart_freq = u_ar71xx_cpu_freq / div; 113} 114 115/* 116 * This does not lock the CPU whilst doing the work! 117 */ 118static void 119ar71xx_chip_device_stop(uint32_t mask) 120{ 121 uint32_t reg; 122 123 reg = ATH_READ_REG(AR71XX_RST_RESET); 124 ATH_WRITE_REG(AR71XX_RST_RESET, reg | mask); 125} 126 127static void 128ar71xx_chip_device_start(uint32_t mask) 129{ 130 uint32_t reg; 131 132 reg = ATH_READ_REG(AR71XX_RST_RESET); 133 ATH_WRITE_REG(AR71XX_RST_RESET, reg & ~mask); 134} 135 136static int 137ar71xx_chip_device_stopped(uint32_t mask) 138{ 139 uint32_t reg; 140 141 reg = ATH_READ_REG(AR71XX_RST_RESET); 142 return ((reg & mask) == mask); 143} 144 145void 146ar71xx_chip_set_mii_speed(uint32_t unit, uint32_t speed) 147{ 148 uint32_t val, reg, ctrl; 149 150 switch (unit) { 151 case 0: 152 reg = AR71XX_MII0_CTRL; 153 break; 154 case 1: 155 reg = AR71XX_MII1_CTRL; 156 break; 157 default: 158 printf("%s: invalid MII unit set for arge unit: %d\n", 159 __func__, unit); 160 return; 161 } 162 163 switch (speed) { 164 case 10: 165 ctrl = MII_CTRL_SPEED_10; 166 break; 167 case 100: 168 ctrl = MII_CTRL_SPEED_100; 169 break; 170 case 1000: 171 ctrl = MII_CTRL_SPEED_1000; 172 break; 173 default: 174 printf("%s: invalid MII speed (%d) set for arge unit: %d\n", 175 __func__, speed, unit); 176 return; 177 } 178 179 val = ATH_READ_REG(reg); 180 val &= ~(MII_CTRL_SPEED_MASK << MII_CTRL_SPEED_SHIFT); 181 val |= (ctrl & MII_CTRL_SPEED_MASK) << MII_CTRL_SPEED_SHIFT; 182 ATH_WRITE_REG(reg, val); 183} 184 185void 186ar71xx_chip_set_mii_if(uint32_t unit, uint32_t mii_mode) 187{ 188 uint32_t val, reg, mii_if; 189 190 switch (unit) { 191 case 0: 192 reg = AR71XX_MII0_CTRL; 193 if (mii_mode == AR71XX_MII_MODE_GMII) 194 mii_if = MII0_CTRL_IF_GMII; 195 else if (mii_mode == AR71XX_MII_MODE_MII) 196 mii_if = MII0_CTRL_IF_MII; 197 else if (mii_mode == AR71XX_MII_MODE_RGMII) 198 mii_if = MII0_CTRL_IF_RGMII; 199 else if (mii_mode == AR71XX_MII_MODE_RMII) 200 mii_if = MII0_CTRL_IF_RMII; 201 else { 202 printf("%s: invalid MII mode (%d) for unit %d\n", 203 __func__, mii_mode, unit); 204 return; 205 } 206 break; 207 case 1: 208 reg = AR71XX_MII1_CTRL; 209 if (mii_mode == AR71XX_MII_MODE_RGMII) 210 mii_if = MII1_CTRL_IF_RGMII; 211 else if (mii_mode == AR71XX_MII_MODE_RMII) 212 mii_if = MII1_CTRL_IF_RMII; 213 else { 214 printf("%s: invalid MII mode (%d) for unit %d\n", 215 __func__, mii_mode, unit); 216 return; 217 } 218 break; 219 default: 220 printf("%s: invalid MII unit set for arge unit: %d\n", 221 __func__, unit); 222 return; 223 } 224 225 val = ATH_READ_REG(reg); 226 val &= ~(MII_CTRL_IF_MASK << MII_CTRL_IF_SHIFT); 227 val |= (mii_if & MII_CTRL_IF_MASK) << MII_CTRL_IF_SHIFT; 228 ATH_WRITE_REG(reg, val); 229} 230 231/* Speed is either 10, 100 or 1000 */ 232static void 233ar71xx_chip_set_pll_ge(int unit, int speed, uint32_t pll) 234{ 235 236 switch (unit) { 237 case 0: 238 ar71xx_write_pll(AR71XX_PLL_SEC_CONFIG, 239 AR71XX_PLL_ETH_INT0_CLK, pll, 240 AR71XX_PLL_ETH0_SHIFT); 241 break; 242 case 1: 243 ar71xx_write_pll(AR71XX_PLL_SEC_CONFIG, 244 AR71XX_PLL_ETH_INT1_CLK, pll, 245 AR71XX_PLL_ETH1_SHIFT); 246 break; 247 default: 248 printf("%s: invalid PLL set for arge unit: %d\n", 249 __func__, unit); 250 return; 251 } 252} 253 254static void 255ar71xx_chip_ddr_flush(ar71xx_flush_ddr_id_t id) 256{ 257 258 switch (id) { 259 case AR71XX_CPU_DDR_FLUSH_GE0: 260 ar71xx_ddr_flush(AR71XX_WB_FLUSH_GE0); 261 break; 262 case AR71XX_CPU_DDR_FLUSH_GE1: 263 ar71xx_ddr_flush(AR71XX_WB_FLUSH_GE1); 264 break; 265 case AR71XX_CPU_DDR_FLUSH_USB: 266 ar71xx_ddr_flush(AR71XX_WB_FLUSH_USB); 267 break; 268 case AR71XX_CPU_DDR_FLUSH_PCIE: 269 ar71xx_ddr_flush(AR71XX_WB_FLUSH_PCI); 270 break; 271 default: 272 printf("%s: invalid DDR flush id (%d)\n", __func__, id); 273 break; 274 } 275} 276 277static uint32_t 278ar71xx_chip_get_eth_pll(unsigned int mac, int speed) 279{ 280 uint32_t pll; 281 282 switch (speed) { 283 case 10: 284 pll = PLL_ETH_INT_CLK_10; 285 break; 286 case 100: 287 pll = PLL_ETH_INT_CLK_100; 288 break; 289 case 1000: 290 pll = PLL_ETH_INT_CLK_1000; 291 break; 292 default: 293 printf("%s%d: invalid speed %d\n", __func__, mac, speed); 294 pll = 0; 295 } 296 297 return (pll); 298} 299 300static void 301ar71xx_chip_init_usb_peripheral(void) 302{ 303 304 ar71xx_device_stop(RST_RESET_USB_OHCI_DLL | 305 RST_RESET_USB_HOST | RST_RESET_USB_PHY); 306 DELAY(1000); 307 308 ar71xx_device_start(RST_RESET_USB_OHCI_DLL | 309 RST_RESET_USB_HOST | RST_RESET_USB_PHY); 310 DELAY(1000); 311 312 ATH_WRITE_REG(AR71XX_USB_CTRL_CONFIG, 313 USB_CTRL_CONFIG_OHCI_DES_SWAP | 314 USB_CTRL_CONFIG_OHCI_BUF_SWAP | 315 USB_CTRL_CONFIG_EHCI_DES_SWAP | 316 USB_CTRL_CONFIG_EHCI_BUF_SWAP); 317 318 ATH_WRITE_REG(AR71XX_USB_CTRL_FLADJ, 319 (32 << USB_CTRL_FLADJ_HOST_SHIFT) | 320 (3 << USB_CTRL_FLADJ_A5_SHIFT)); 321 322 DELAY(1000); 323} 324 325struct ar71xx_cpu_def ar71xx_chip_def = { 326 &ar71xx_chip_detect_mem_size, 327 &ar71xx_chip_detect_sys_frequency, 328 &ar71xx_chip_device_stop, 329 &ar71xx_chip_device_start, 330 &ar71xx_chip_device_stopped, 331 &ar71xx_chip_set_pll_ge, 332 &ar71xx_chip_set_mii_speed, 333 &ar71xx_chip_set_mii_if, 334 &ar71xx_chip_get_eth_pll, 335 &ar71xx_chip_ddr_flush, 336 &ar71xx_chip_init_usb_peripheral, 337}; 338