1 /* 2 * Cortina CS4315/CS4340 10G PHY drivers 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 * 6 * Copyright 2014 Freescale Semiconductor, Inc. 7 * 8 */ 9 10 #include <config.h> 11 #include <common.h> 12 #include <malloc.h> 13 #include <linux/ctype.h> 14 #include <linux/string.h> 15 #include <linux/err.h> 16 #include <phy.h> 17 #include <cortina.h> 18 #ifdef CONFIG_SYS_CORTINA_FW_IN_NAND 19 #include <nand.h> 20 #elif defined(CONFIG_SYS_CORTINA_FW_IN_SPIFLASH) 21 #include <spi_flash.h> 22 #elif defined(CONFIG_SYS_CORTINA_FW_IN_MMC) 23 #include <mmc.h> 24 #endif 25 26 #ifndef CONFIG_PHYLIB_10G 27 #error The Cortina PHY needs 10G support 28 #endif 29 30 struct cortina_reg_config cortina_reg_cfg[] = { 31 /* CS4315_enable_sr_mode */ 32 {VILLA_GLOBAL_MSEQCLKCTRL, 0x8004}, 33 {VILLA_MSEQ_OPTIONS, 0xf}, 34 {VILLA_MSEQ_PC, 0x0}, 35 {VILLA_MSEQ_BANKSELECT, 0x4}, 36 {VILLA_LINE_SDS_COMMON_SRX0_RX_CPA, 0x55}, 37 {VILLA_LINE_SDS_COMMON_SRX0_RX_LOOP_FILTER, 0x30}, 38 {VILLA_DSP_SDS_SERDES_SRX_DFE0_SELECT, 0x1}, 39 {VILLA_DSP_SDS_DSP_COEF_DFE0_SELECT, 0x2}, 40 {VILLA_LINE_SDS_COMMON_SRX0_RX_CPB, 0x2003}, 41 {VILLA_DSP_SDS_SERDES_SRX_FFE_DELAY_CTRL, 0xF047}, 42 {VILLA_MSEQ_ENABLE_MSB, 0x0000}, 43 {VILLA_MSEQ_SPARE21_LSB, 0x6}, 44 {VILLA_MSEQ_RESET_COUNT_LSB, 0x0}, 45 {VILLA_MSEQ_SPARE12_MSB, 0x0000}, 46 /* 47 * to invert the receiver path, uncomment the next line 48 * write (VILLA_MSEQ_SPARE12_MSB, 0x4000) 49 * 50 * SPARE2_LSB is used to configure the device while in sr mode to 51 * enable power savings and to use the optical module LOS signal. 52 * in power savings mode, the internal prbs checker can not be used. 53 * if the optical module LOS signal is used as an input to the micro 54 * code, then the micro code will wait until the optical module 55 * LOS = 0 before turning on the adaptive equalizer. 56 * Setting SPARE2_LSB bit 0 to 1 places the devie in power savings mode 57 * while setting bit 0 to 0 disables power savings mode. 58 * Setting SPARE2_LSB bit 2 to 0 configures the device to use the 59 * optical module LOS signal while setting bit 2 to 1 configures the 60 * device so that it will ignore the optical module LOS SPARE2_LSB = 0 61 */ 62 63 /* enable power savings, ignore optical module LOS */ 64 {VILLA_MSEQ_SPARE2_LSB, 0x5}, 65 66 {VILLA_MSEQ_SPARE7_LSB, 0x1e}, 67 {VILLA_MSEQ_BANKSELECT, 0x4}, 68 {VILLA_MSEQ_SPARE9_LSB, 0x2}, 69 {VILLA_MSEQ_SPARE3_LSB, 0x0F53}, 70 {VILLA_MSEQ_SPARE3_MSB, 0x2006}, 71 {VILLA_MSEQ_SPARE8_LSB, 0x3FF7}, 72 {VILLA_MSEQ_SPARE8_MSB, 0x0A46}, 73 {VILLA_MSEQ_COEF8_FFE0_LSB, 0xD500}, 74 {VILLA_MSEQ_COEF8_FFE1_LSB, 0x0200}, 75 {VILLA_MSEQ_COEF8_FFE2_LSB, 0xBA00}, 76 {VILLA_MSEQ_COEF8_FFE3_LSB, 0x0100}, 77 {VILLA_MSEQ_COEF8_FFE4_LSB, 0x0300}, 78 {VILLA_MSEQ_COEF8_FFE5_LSB, 0x0300}, 79 {VILLA_MSEQ_COEF8_DFE0_LSB, 0x0700}, 80 {VILLA_MSEQ_COEF8_DFE0N_LSB, 0x0E00}, 81 {VILLA_MSEQ_COEF8_DFE1_LSB, 0x0B00}, 82 {VILLA_DSP_SDS_DSP_COEF_LARGE_LEAK, 0x2}, 83 {VILLA_DSP_SDS_SERDES_SRX_DAC_ENABLEB_LSB, 0xD000}, 84 {VILLA_MSEQ_POWER_DOWN_LSB, 0xFFFF}, 85 {VILLA_MSEQ_POWER_DOWN_MSB, 0x0}, 86 {VILLA_MSEQ_CAL_RX_SLICER, 0x80}, 87 {VILLA_DSP_SDS_SERDES_SRX_DAC_BIAS_SELECT1_MSB, 0x3f}, 88 {VILLA_GLOBAL_MSEQCLKCTRL, 0x4}, 89 {VILLA_MSEQ_OPTIONS, 0x7}, 90 91 /* set up min value for ffe1 */ 92 {VILLA_MSEQ_COEF_INIT_SEL, 0x2}, 93 {VILLA_DSP_SDS_DSP_PRECODEDINITFFE21, 0x41}, 94 95 /* CS4315_sr_rx_pre_eq_set_4in */ 96 {VILLA_GLOBAL_MSEQCLKCTRL, 0x8004}, 97 {VILLA_MSEQ_OPTIONS, 0xf}, 98 {VILLA_MSEQ_BANKSELECT, 0x4}, 99 {VILLA_MSEQ_PC, 0x0}, 100 101 /* for lengths from 3.5 to 4.5inches */ 102 {VILLA_MSEQ_SERDES_PARAM_LSB, 0x0306}, 103 {VILLA_MSEQ_SPARE25_LSB, 0x0306}, 104 {VILLA_MSEQ_SPARE21_LSB, 0x2}, 105 {VILLA_MSEQ_SPARE23_LSB, 0x2}, 106 {VILLA_MSEQ_CAL_RX_DFE_EQ, 0x0}, 107 108 {VILLA_GLOBAL_MSEQCLKCTRL, 0x4}, 109 {VILLA_MSEQ_OPTIONS, 0x7}, 110 111 /* CS4315_rx_drive_4inch */ 112 /* for length 4inches */ 113 {VILLA_GLOBAL_VILLA2_COMPATIBLE, 0x0000}, 114 {VILLA_HOST_SDS_COMMON_STX0_TX_OUTPUT_CTRLA, 0x3023}, 115 {VILLA_LINE_SDS_COMMON_STX0_TX_OUTPUT_CTRLB, 0xc01E}, 116 117 /* CS4315_tx_drive_4inch */ 118 /* for length 4inches */ 119 {VILLA_GLOBAL_VILLA2_COMPATIBLE, 0x0000}, 120 {VILLA_LINE_SDS_COMMON_STX0_TX_OUTPUT_CTRLA, 0x3023}, 121 {VILLA_LINE_SDS_COMMON_STX0_TX_OUTPUT_CTRLB, 0xc01E}, 122 }; 123 124 void cs4340_upload_firmware(struct phy_device *phydev) 125 { 126 char line_temp[0x50] = {0}; 127 char reg_addr[0x50] = {0}; 128 char reg_data[0x50] = {0}; 129 int i, line_cnt = 0, column_cnt = 0; 130 struct cortina_reg_config fw_temp; 131 char *addr = NULL; 132 133 #if defined(CONFIG_SYS_CORTINA_FW_IN_NOR) || \ 134 defined(CONFIG_SYS_CORTINA_FW_IN_REMOTE) 135 136 addr = (char *)CONFIG_CORTINA_FW_ADDR; 137 #elif defined(CONFIG_SYS_CORTINA_FW_IN_NAND) 138 int ret; 139 size_t fw_length = CONFIG_CORTINA_FW_LENGTH; 140 141 addr = malloc(CONFIG_CORTINA_FW_LENGTH); 142 ret = nand_read(&nand_info[0], (loff_t)CONFIG_CORTINA_FW_ADDR, 143 &fw_length, (u_char *)addr); 144 if (ret == -EUCLEAN) { 145 printf("NAND read of Cortina firmware at 0x%x failed %d\n", 146 CONFIG_CORTINA_FW_ADDR, ret); 147 } 148 #elif defined(CONFIG_SYS_CORTINA_FW_IN_SPIFLASH) 149 int ret; 150 struct spi_flash *ucode_flash; 151 152 addr = malloc(CONFIG_CORTINA_FW_LENGTH); 153 ucode_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, 154 CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); 155 if (!ucode_flash) { 156 puts("SF: probe for Cortina ucode failed\n"); 157 } else { 158 ret = spi_flash_read(ucode_flash, CONFIG_CORTINA_FW_ADDR, 159 CONFIG_CORTINA_FW_LENGTH, addr); 160 if (ret) 161 puts("SF: read for Cortina ucode failed\n"); 162 spi_flash_free(ucode_flash); 163 } 164 #elif defined(CONFIG_SYS_CORTINA_FW_IN_MMC) 165 int dev = CONFIG_SYS_MMC_ENV_DEV; 166 u32 cnt = CONFIG_CORTINA_FW_LENGTH / 512; 167 u32 blk = CONFIG_CORTINA_FW_ADDR / 512; 168 struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV); 169 170 if (!mmc) { 171 puts("Failed to find MMC device for Cortina ucode\n"); 172 } else { 173 addr = malloc(CONFIG_CORTINA_FW_LENGTH); 174 printf("MMC read: dev # %u, block # %u, count %u ...\n", 175 dev, blk, cnt); 176 mmc_init(mmc); 177 (void)mmc->block_dev.block_read(dev, blk, cnt, addr); 178 /* flush cache after read */ 179 flush_cache((ulong)addr, cnt * 512); 180 } 181 #endif 182 183 while (*addr != 'Q') { 184 i = 0; 185 186 while (*addr != 0x0a) { 187 line_temp[i++] = *addr++; 188 if (0x50 < i) { 189 printf("Not found Cortina PHY ucode at 0x%p\n", 190 (char *)CONFIG_CORTINA_FW_ADDR); 191 return; 192 } 193 } 194 195 addr++; /* skip '\n' */ 196 line_cnt++; 197 column_cnt = i; 198 line_temp[column_cnt] = '\0'; 199 200 if (CONFIG_CORTINA_FW_LENGTH < line_cnt) 201 return; 202 203 for (i = 0; i < column_cnt; i++) { 204 if (isspace(line_temp[i++])) 205 break; 206 } 207 208 memcpy(reg_addr, line_temp, i); 209 memcpy(reg_data, &line_temp[i], column_cnt - i); 210 strim(reg_addr); 211 strim(reg_data); 212 fw_temp.reg_addr = (simple_strtoul(reg_addr, NULL, 0)) & 0xffff; 213 fw_temp.reg_value = (simple_strtoul(reg_data, NULL, 0)) & 214 0xffff; 215 phy_write(phydev, 0x00, fw_temp.reg_addr, fw_temp.reg_value); 216 } 217 } 218 219 int cs4340_phy_init(struct phy_device *phydev) 220 { 221 int timeout = 100; /* 100ms */ 222 int reg_value; 223 224 /* step1: BIST test */ 225 phy_write(phydev, 0x00, VILLA_GLOBAL_MSEQCLKCTRL, 0x0004); 226 phy_write(phydev, 0x00, VILLA_GLOBAL_LINE_SOFT_RESET, 0x0000); 227 phy_write(phydev, 0x00, VILLA_GLOBAL_BIST_CONTROL, 0x0001); 228 while (--timeout) { 229 reg_value = phy_read(phydev, 0x00, VILLA_GLOBAL_BIST_STATUS); 230 if (reg_value & mseq_edc_bist_done) { 231 if (0 == (reg_value & mseq_edc_bist_fail)) 232 break; 233 } 234 udelay(1000); 235 } 236 237 if (!timeout) { 238 printf("%s BIST mseq_edc_bist_done timeout!\n", __func__); 239 return -1; 240 } 241 242 /* setp2: upload ucode */ 243 cs4340_upload_firmware(phydev); 244 reg_value = phy_read(phydev, 0x00, VILLA_GLOBAL_DWNLD_CHECKSUM_STATUS); 245 if (reg_value) { 246 debug("%s checksum status failed.\n", __func__); 247 return -1; 248 } 249 250 return 0; 251 } 252 253 int cs4340_config(struct phy_device *phydev) 254 { 255 cs4340_phy_init(phydev); 256 return 0; 257 } 258 259 int cs4340_startup(struct phy_device *phydev) 260 { 261 phydev->link = 1; 262 263 /* For now just lie and say it's 10G all the time */ 264 phydev->speed = SPEED_10000; 265 phydev->duplex = DUPLEX_FULL; 266 return 0; 267 } 268 269 struct phy_driver cs4340_driver = { 270 .name = "Cortina CS4315/CS4340", 271 .uid = PHY_UID_CS4340, 272 .mask = 0xfffffff0, 273 .features = PHY_10G_FEATURES, 274 .mmds = (MDIO_DEVS_PMAPMD | MDIO_DEVS_PCS | 275 MDIO_DEVS_PHYXS | MDIO_DEVS_AN | 276 MDIO_DEVS_VEND1 | MDIO_DEVS_VEND2), 277 .config = &cs4340_config, 278 .startup = &cs4340_startup, 279 .shutdown = &gen10g_shutdown, 280 }; 281 282 int phy_cortina_init(void) 283 { 284 phy_register(&cs4340_driver); 285 return 0; 286 } 287 288 int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id) 289 { 290 int phy_reg; 291 bool is_cortina_phy = false; 292 293 switch (addr) { 294 #ifdef CORTINA_PHY_ADDR1 295 case CORTINA_PHY_ADDR1: 296 #endif 297 #ifdef CORTINA_PHY_ADDR2 298 case CORTINA_PHY_ADDR2: 299 #endif 300 #ifdef CORTINA_PHY_ADDR3 301 case CORTINA_PHY_ADDR3: 302 #endif 303 #ifdef CORTINA_PHY_ADDR4 304 case CORTINA_PHY_ADDR4: 305 #endif 306 is_cortina_phy = true; 307 break; 308 default: 309 break; 310 } 311 312 /* Cortina PHY has non-standard offset of PHY ID registers */ 313 if (is_cortina_phy) 314 phy_reg = bus->read(bus, addr, 0, VILLA_GLOBAL_CHIP_ID_LSB); 315 else 316 phy_reg = bus->read(bus, addr, devad, MII_PHYSID1); 317 318 if (phy_reg < 0) 319 return -EIO; 320 321 *phy_id = (phy_reg & 0xffff) << 16; 322 if (is_cortina_phy) 323 phy_reg = bus->read(bus, addr, 0, VILLA_GLOBAL_CHIP_ID_MSB); 324 else 325 phy_reg = bus->read(bus, addr, devad, MII_PHYSID2); 326 327 if (phy_reg < 0) 328 return -EIO; 329 330 *phy_id |= (phy_reg & 0xffff); 331 332 return 0; 333 } 334