| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Yuiko Oshino | 2035 | 52.10% | 3 | 17.65% |
| Arun Ramadoss | 1109 | 28.39% | 8 | 47.06% |
| Nisar Sayed <Nisar.Sayed@microchip.com> | 491 | 12.57% | 1 | 5.88% |
| Rakesh Sankaranarayanan | 197 | 5.04% | 1 | 5.88% |
| Ioana Ciornei | 67 | 1.72% | 2 | 11.76% |
| Woojung Huh | 5 | 0.13% | 1 | 5.88% |
| Andrew Lunn | 2 | 0.05% | 1 | 5.88% |
| Total | 3906 | 17 |
// SPDX-License-Identifier: GPL-2.0 // Copyright (C) 2018 Microchip Technology #include <linux/kernel.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/mii.h> #include <linux/phy.h> #include <linux/ethtool.h> #include <linux/ethtool_netlink.h> #include <linux/bitfield.h> #define PHY_ID_LAN87XX 0x0007c150 #define PHY_ID_LAN937X 0x0007c180 /* External Register Control Register */ #define LAN87XX_EXT_REG_CTL (0x14) #define LAN87XX_EXT_REG_CTL_RD_CTL (0x1000) #define LAN87XX_EXT_REG_CTL_WR_CTL (0x0800) #define LAN87XX_REG_BANK_SEL_MASK GENMASK(10, 8) #define LAN87XX_REG_ADDR_MASK GENMASK(7, 0) /* External Register Read Data Register */ #define LAN87XX_EXT_REG_RD_DATA (0x15) /* External Register Write Data Register */ #define LAN87XX_EXT_REG_WR_DATA (0x16) /* Interrupt Source Register */ #define LAN87XX_INTERRUPT_SOURCE (0x18) #define LAN87XX_INTERRUPT_SOURCE_2 (0x08) /* Interrupt Mask Register */ #define LAN87XX_INTERRUPT_MASK (0x19) #define LAN87XX_MASK_LINK_UP (0x0004) #define LAN87XX_MASK_LINK_DOWN (0x0002) #define LAN87XX_INTERRUPT_MASK_2 (0x09) #define LAN87XX_MASK_COMM_RDY BIT(10) /* MISC Control 1 Register */ #define LAN87XX_CTRL_1 (0x11) #define LAN87XX_MASK_RGMII_TXC_DLY_EN (0x4000) #define LAN87XX_MASK_RGMII_RXC_DLY_EN (0x2000) /* phyaccess nested types */ #define PHYACC_ATTR_MODE_READ 0 #define PHYACC_ATTR_MODE_WRITE 1 #define PHYACC_ATTR_MODE_MODIFY 2 #define PHYACC_ATTR_MODE_POLL 3 #define PHYACC_ATTR_BANK_SMI 0 #define PHYACC_ATTR_BANK_MISC 1 #define PHYACC_ATTR_BANK_PCS 2 #define PHYACC_ATTR_BANK_AFE 3 #define PHYACC_ATTR_BANK_DSP 4 #define PHYACC_ATTR_BANK_MAX 7 /* measurement defines */ #define LAN87XX_CABLE_TEST_OK 0 #define LAN87XX_CABLE_TEST_OPEN 1 #define LAN87XX_CABLE_TEST_SAME_SHORT 2 /* T1 Registers */ #define T1_AFE_PORT_CFG1_REG 0x0B #define T1_POWER_DOWN_CONTROL_REG 0x1A #define T1_SLV_FD_MULT_CFG_REG 0x18 #define T1_CDR_CFG_PRE_LOCK_REG 0x05 #define T1_CDR_CFG_POST_LOCK_REG 0x06 #define T1_LCK_STG2_MUFACT_CFG_REG 0x1A #define T1_LCK_STG3_MUFACT_CFG_REG 0x1B #define T1_POST_LCK_MUFACT_CFG_REG 0x1C #define T1_TX_RX_FIFO_CFG_REG 0x02 #define T1_TX_LPF_FIR_CFG_REG 0x55 #define T1_COEF_CLK_PWR_DN_CFG 0x04 #define T1_COEF_RW_CTL_CFG 0x0D #define T1_SQI_CONFIG_REG 0x2E #define T1_SQI_CONFIG2_REG 0x4A #define T1_DCQ_SQI_REG 0xC3 #define T1_DCQ_SQI_MSK GENMASK(3, 1) #define T1_MDIO_CONTROL2_REG 0x10 #define T1_INTERRUPT_SOURCE_REG 0x18 #define T1_INTERRUPT2_SOURCE_REG 0x08 #define T1_EQ_FD_STG1_FRZ_CFG 0x69 #define T1_EQ_FD_STG2_FRZ_CFG 0x6A #define T1_EQ_FD_STG3_FRZ_CFG 0x6B #define T1_EQ_FD_STG4_FRZ_CFG 0x6C #define T1_EQ_WT_FD_LCK_FRZ_CFG 0x6D #define T1_PST_EQ_LCK_STG1_FRZ_CFG 0x6E #define T1_MODE_STAT_REG 0x11 #define T1_LINK_UP_MSK BIT(0) /* SQI defines */ #define LAN87XX_MAX_SQI 0x07 #define DRIVER_AUTHOR "Nisar Sayed <nisar.sayed@microchip.com>" #define DRIVER_DESC "Microchip LAN87XX/LAN937x T1 PHY driver" struct access_ereg_val { u8 mode; u8 bank; u8 offset; u16 val; u16 mask; }; static int lan937x_dsp_workaround(struct phy_device *phydev, u16 ereg, u8 bank) { u8 prev_bank; int rc = 0; u16 val; mutex_lock(&phydev->lock); /* Read previous selected bank */ rc = phy_read(phydev, LAN87XX_EXT_REG_CTL); if (rc < 0) goto out_unlock; /* store the prev_bank */ prev_bank = FIELD_GET(LAN87XX_REG_BANK_SEL_MASK, rc); if (bank != prev_bank && bank == PHYACC_ATTR_BANK_DSP) { val = ereg & ~LAN87XX_REG_ADDR_MASK; val &= ~LAN87XX_EXT_REG_CTL_WR_CTL; val |= LAN87XX_EXT_REG_CTL_RD_CTL; /* access twice for DSP bank change,dummy access */ rc = phy_write(phydev, LAN87XX_EXT_REG_CTL, val); } out_unlock: mutex_unlock(&phydev->lock); return rc; } static int access_ereg(struct phy_device *phydev, u8 mode, u8 bank, u8 offset, u16 val) { u16 ereg = 0; int rc = 0; if (mode > PHYACC_ATTR_MODE_WRITE || bank > PHYACC_ATTR_BANK_MAX) return -EINVAL; if (bank == PHYACC_ATTR_BANK_SMI) { if (mode == PHYACC_ATTR_MODE_WRITE) rc = phy_write(phydev, offset, val); else rc = phy_read(phydev, offset); return rc; } if (mode == PHYACC_ATTR_MODE_WRITE) { ereg = LAN87XX_EXT_REG_CTL_WR_CTL; rc = phy_write(phydev, LAN87XX_EXT_REG_WR_DATA, val); if (rc < 0) return rc; } else { ereg = LAN87XX_EXT_REG_CTL_RD_CTL; } ereg |= (bank << 8) | offset; /* DSP bank access workaround for lan937x */ if (phydev->phy_id == PHY_ID_LAN937X) { rc = lan937x_dsp_workaround(phydev, ereg, bank); if (rc < 0) return rc; } rc = phy_write(phydev, LAN87XX_EXT_REG_CTL, ereg); if (rc < 0) return rc; if (mode == PHYACC_ATTR_MODE_READ) rc = phy_read(phydev, LAN87XX_EXT_REG_RD_DATA); return rc; } static int access_ereg_modify_changed(struct phy_device *phydev, u8 bank, u8 offset, u16 val, u16 mask) { int new = 0, rc = 0; if (bank > PHYACC_ATTR_BANK_MAX) return -EINVAL; rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, bank, offset, val); if (rc < 0) return rc; new = val | (rc & (mask ^ 0xFFFF)); rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE, bank, offset, new); return rc; } static int access_smi_poll_timeout(struct phy_device *phydev, u8 offset, u16 mask, u16 clr) { int val; return phy_read_poll_timeout(phydev, offset, val, (val & mask) == clr, 150, 30000, true); } static int lan87xx_config_rgmii_delay(struct phy_device *phydev) { int rc; if (!phy_interface_is_rgmii(phydev)) return 0; rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_MISC, LAN87XX_CTRL_1, 0); if (rc < 0) return rc; switch (phydev->interface) { case PHY_INTERFACE_MODE_RGMII: rc &= ~LAN87XX_MASK_RGMII_TXC_DLY_EN; rc &= ~LAN87XX_MASK_RGMII_RXC_DLY_EN; break; case PHY_INTERFACE_MODE_RGMII_ID: rc |= LAN87XX_MASK_RGMII_TXC_DLY_EN; rc |= LAN87XX_MASK_RGMII_RXC_DLY_EN; break; case PHY_INTERFACE_MODE_RGMII_RXID: rc &= ~LAN87XX_MASK_RGMII_TXC_DLY_EN; rc |= LAN87XX_MASK_RGMII_RXC_DLY_EN; break; case PHY_INTERFACE_MODE_RGMII_TXID: rc |= LAN87XX_MASK_RGMII_TXC_DLY_EN; rc &= ~LAN87XX_MASK_RGMII_RXC_DLY_EN; break; default: return 0; } return access_ereg(phydev, PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_MISC, LAN87XX_CTRL_1, rc); } static int lan87xx_phy_init_cmd(struct phy_device *phydev, const struct access_ereg_val *cmd_seq, int cnt) { int ret, i; for (i = 0; i < cnt; i++) { if (cmd_seq[i].mode == PHYACC_ATTR_MODE_POLL && cmd_seq[i].bank == PHYACC_ATTR_BANK_SMI) { ret = access_smi_poll_timeout(phydev, cmd_seq[i].offset, cmd_seq[i].val, cmd_seq[i].mask); } else { ret = access_ereg(phydev, cmd_seq[i].mode, cmd_seq[i].bank, cmd_seq[i].offset, cmd_seq[i].val); } if (ret < 0) return ret; } return ret; } static int lan87xx_phy_init(struct phy_device *phydev) { static const struct access_ereg_val hw_init[] = { /* TXPD/TXAMP6 Configs */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_AFE, T1_AFE_PORT_CFG1_REG, 0x002D, 0 }, /* HW_Init Hi and Force_ED */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI, T1_POWER_DOWN_CONTROL_REG, 0x0308, 0 }, }; static const struct access_ereg_val slave_init[] = { /* Equalizer Full Duplex Freeze - T1 Slave */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_EQ_FD_STG1_FRZ_CFG, 0x0002, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_EQ_FD_STG2_FRZ_CFG, 0x0002, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_EQ_FD_STG3_FRZ_CFG, 0x0002, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_EQ_FD_STG4_FRZ_CFG, 0x0002, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_EQ_WT_FD_LCK_FRZ_CFG, 0x0002, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_PST_EQ_LCK_STG1_FRZ_CFG, 0x0002, 0 }, }; static const struct access_ereg_val phy_init[] = { /* Slave Full Duplex Multi Configs */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_SLV_FD_MULT_CFG_REG, 0x0D53, 0 }, /* CDR Pre and Post Lock Configs */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_CDR_CFG_PRE_LOCK_REG, 0x0AB2, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_CDR_CFG_POST_LOCK_REG, 0x0AB3, 0 }, /* Lock Stage 2-3 Multi Factor Config */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_LCK_STG2_MUFACT_CFG_REG, 0x0AEA, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_LCK_STG3_MUFACT_CFG_REG, 0x0AEB, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_POST_LCK_MUFACT_CFG_REG, 0x0AEB, 0 }, /* Pointer delay */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_RX_FIFO_CFG_REG, 0x1C00, 0 }, /* Tx iir edits */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1000, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1861, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1061, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1922, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1122, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1983, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1183, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1944, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1144, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x18c5, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x10c5, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1846, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1046, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1807, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1007, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1808, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1008, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1809, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1009, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x180A, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x100A, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x180B, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x100B, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x180C, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x100C, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x180D, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x100D, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x180E, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x100E, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x180F, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x100F, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1810, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1010, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1811, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1011, 0 }, { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_TX_LPF_FIR_CFG_REG, 0x1000, 0 }, /* Setup SQI measurement */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_COEF_CLK_PWR_DN_CFG, 0x16d6, 0 }, /* SQI enable */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_SQI_CONFIG_REG, 0x9572, 0 }, /* SQI select mode 5 */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_SQI_CONFIG2_REG, 0x0001, 0 }, /* Throws the first SQI reading */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_COEF_RW_CTL_CFG, 0x0301, 0 }, { PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, T1_DCQ_SQI_REG, 0, 0 }, /* Flag LPS and WUR as idle errors */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI, T1_MDIO_CONTROL2_REG, 0x0014, 0 }, /* HW_Init toggle, undo force ED, TXPD off */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI, T1_POWER_DOWN_CONTROL_REG, 0x0200, 0 }, /* Reset PCS to trigger hardware initialization */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI, T1_MDIO_CONTROL2_REG, 0x0094, 0 }, /* Poll till Hardware is initialized */ { PHYACC_ATTR_MODE_POLL, PHYACC_ATTR_BANK_SMI, T1_MDIO_CONTROL2_REG, 0x0080, 0 }, /* Tx AMP - 0x06 */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_AFE, T1_AFE_PORT_CFG1_REG, 0x000C, 0 }, /* Read INTERRUPT_SOURCE Register */ { PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_SMI, T1_INTERRUPT_SOURCE_REG, 0, 0 }, /* Read INTERRUPT_SOURCE Register */ { PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_MISC, T1_INTERRUPT2_SOURCE_REG, 0, 0 }, /* HW_Init Hi */ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI, T1_POWER_DOWN_CONTROL_REG, 0x0300, 0 }, }; int rc; /* phy Soft reset */ rc = genphy_soft_reset(phydev); if (rc < 0) return rc; /* PHY Initialization */ rc = lan87xx_phy_init_cmd(phydev, hw_init, ARRAY_SIZE(hw_init)); if (rc < 0) return rc; rc = genphy_read_master_slave(phydev); if (rc) return rc; /* The following squence needs to run only if phydev is in * slave mode. */ if (phydev->master_slave_state == MASTER_SLAVE_STATE_SLAVE) { rc = lan87xx_phy_init_cmd(phydev, slave_init, ARRAY_SIZE(slave_init)); if (rc < 0) return rc; } rc = lan87xx_phy_init_cmd(phydev, phy_init, ARRAY_SIZE(phy_init)); if (rc < 0) return rc; return lan87xx_config_rgmii_delay(phydev); } static int lan87xx_phy_config_intr(struct phy_device *phydev) { int rc, val = 0; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { /* clear all interrupt */ rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val); if (rc < 0) return rc; rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE); if (rc < 0) return rc; rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_MISC, LAN87XX_INTERRUPT_MASK_2, val); if (rc < 0) return rc; rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_MISC, LAN87XX_INTERRUPT_SOURCE_2, 0); if (rc < 0) return rc; /* enable link down and comm ready interrupt */ val = LAN87XX_MASK_LINK_DOWN; rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val); if (rc < 0) return rc; val = LAN87XX_MASK_COMM_RDY; rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_MISC, LAN87XX_INTERRUPT_MASK_2, val); } else { rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val); if (rc < 0) return rc; rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE); if (rc < 0) return rc; rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_MISC, LAN87XX_INTERRUPT_MASK_2, val); if (rc < 0) return rc; rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_MISC, LAN87XX_INTERRUPT_SOURCE_2, 0); } return rc < 0 ? rc : 0; } static irqreturn_t lan87xx_handle_interrupt(struct phy_device *phydev) { int irq_status; irq_status = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_MISC, LAN87XX_INTERRUPT_SOURCE_2, 0); if (irq_status < 0) { phy_error(phydev); return IRQ_NONE; } irq_status = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE); if (irq_status < 0) { phy_error(phydev); return IRQ_NONE; } if (irq_status == 0) return IRQ_NONE; phy_trigger_machine(phydev); return IRQ_HANDLED; } static int lan87xx_config_init(struct phy_device *phydev) { int rc = lan87xx_phy_init(phydev); return rc < 0 ? rc : 0; } static int microchip_cable_test_start_common(struct phy_device *phydev) { int bmcr, bmsr, ret; /* If auto-negotiation is enabled, but not complete, the cable * test never completes. So disable auto-neg. */ bmcr = phy_read(phydev, MII_BMCR); if (bmcr < 0) return bmcr; bmsr = phy_read(phydev, MII_BMSR); if (bmsr < 0) return bmsr; if (bmcr & BMCR_ANENABLE) { ret = phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0); if (ret < 0) return ret; ret = genphy_soft_reset(phydev); if (ret < 0) return ret; } /* If the link is up, allow it some time to go down */ if (bmsr & BMSR_LSTATUS) msleep(1500); return 0; } static int lan87xx_cable_test_start(struct phy_device *phydev) { static const struct access_ereg_val cable_test[] = { /* min wait */ {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 93, 0, 0}, /* max wait */ {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 94, 10, 0}, /* pulse cycle */ {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 95, 90, 0}, /* cable diag thresh */ {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 92, 60, 0}, /* max gain */ {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 79, 31, 0}, /* clock align for each iteration */ {PHYACC_ATTR_MODE_MODIFY, PHYACC_ATTR_BANK_DSP, 55, 0, 0x0038}, /* max cycle wait config */ {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 94, 70, 0}, /* start cable diag*/ {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 90, 1, 0}, }; int rc, i; rc = microchip_cable_test_start_common(phydev); if (rc < 0) return rc; /* start cable diag */ /* check if part is alive - if not, return diagnostic error */ rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_SMI, 0x00, 0); if (rc < 0) return rc; /* master/slave specific configs */ rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_SMI, 0x0A, 0); if (rc < 0) return rc; if ((rc & 0x4000) != 0x4000) { /* DUT is Slave */ rc = access_ereg_modify_changed(phydev, PHYACC_ATTR_BANK_AFE, 0x0E, 0x5, 0x7); if (rc < 0) return rc; rc = access_ereg_modify_changed(phydev, PHYACC_ATTR_BANK_SMI, 0x1A, 0x8, 0x8); if (rc < 0) return rc; } else { /* DUT is Master */ rc = access_ereg_modify_changed(phydev, PHYACC_ATTR_BANK_SMI, 0x10, 0x8, 0x40); if (rc < 0) return rc; } for (i = 0; i < ARRAY_SIZE(cable_test); i++) { if (cable_test[i].mode == PHYACC_ATTR_MODE_MODIFY) { rc = access_ereg_modify_changed(phydev, cable_test[i].bank, cable_test[i].offset, cable_test[i].val, cable_test[i].mask); /* wait 50ms */ msleep(50); } else { rc = access_ereg(phydev, cable_test[i].mode, cable_test[i].bank, cable_test[i].offset, cable_test[i].val); } if (rc < 0) return rc; } /* cable diag started */ return 0; } static int lan87xx_cable_test_report_trans(u32 result) { switch (result) { case LAN87XX_CABLE_TEST_OK: return ETHTOOL_A_CABLE_RESULT_CODE_OK; case LAN87XX_CABLE_TEST_OPEN: return ETHTOOL_A_CABLE_RESULT_CODE_OPEN; case LAN87XX_CABLE_TEST_SAME_SHORT: return ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT; default: /* DIAGNOSTIC_ERROR */ return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC; } } static int lan87xx_cable_test_report(struct phy_device *phydev) { int pos_peak_cycle = 0, pos_peak_in_phases = 0, pos_peak_phase = 0; int neg_peak_cycle = 0, neg_peak_in_phases = 0, neg_peak_phase = 0; int noise_margin = 20, time_margin = 89, jitter_var = 30; int min_time_diff = 96, max_time_diff = 96 + time_margin; bool fault = false, check_a = false, check_b = false; int gain_idx = 0, pos_peak = 0, neg_peak = 0; int pos_peak_time = 0, neg_peak_time = 0; int pos_peak_in_phases_hybrid = 0; int detect = -1; gain_idx = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, 151, 0); /* read non-hybrid results */ pos_peak = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, 153, 0); neg_peak = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, 154, 0); pos_peak_time = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, 156, 0); neg_peak_time = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, 157, 0); pos_peak_cycle = (pos_peak_time >> 7) & 0x7F; /* calculate non-hybrid values */ pos_peak_phase = pos_peak_time & 0x7F; pos_peak_in_phases = (pos_peak_cycle * 96) + pos_peak_phase; neg_peak_cycle = (neg_peak_time >> 7) & 0x7F; neg_peak_phase = neg_peak_time & 0x7F; neg_peak_in_phases = (neg_peak_cycle * 96) + neg_peak_phase; /* process values */ check_a = ((pos_peak_in_phases - neg_peak_in_phases) >= min_time_diff) && ((pos_peak_in_phases - neg_peak_in_phases) < max_time_diff) && pos_peak_in_phases_hybrid < pos_peak_in_phases && (pos_peak_in_phases_hybrid < (neg_peak_in_phases + jitter_var)); check_b = ((neg_peak_in_phases - pos_peak_in_phases) >= min_time_diff) && ((neg_peak_in_phases - pos_peak_in_phases) < max_time_diff) && pos_peak_in_phases_hybrid < neg_peak_in_phases && (pos_peak_in_phases_hybrid < (pos_peak_in_phases + jitter_var)); if (pos_peak_in_phases > neg_peak_in_phases && check_a) detect = 2; else if ((neg_peak_in_phases > pos_peak_in_phases) && check_b) detect = 1; if (pos_peak > noise_margin && neg_peak > noise_margin && gain_idx >= 0) { if (detect == 1 || detect == 2) fault = true; } if (!fault) detect = 0; ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_A, lan87xx_cable_test_report_trans(detect)); return 0; } static int lan87xx_cable_test_get_status(struct phy_device *phydev, bool *finished) { int rc = 0; *finished = false; /* check if cable diag was finished */ rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, 90, 0); if (rc < 0) return rc; if ((rc & 2) == 2) { /* stop cable diag*/ rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, 90, 0); if (rc < 0) return rc; *finished = true; return lan87xx_cable_test_report(phydev); } return 0; } static int lan87xx_read_status(struct phy_device *phydev) { int rc = 0; rc = phy_read(phydev, T1_MODE_STAT_REG); if (rc < 0) return rc; if (rc & T1_LINK_UP_MSK) phydev->link = 1; else phydev->link = 0; phydev->speed = SPEED_UNKNOWN; phydev->duplex = DUPLEX_UNKNOWN; phydev->pause = 0; phydev->asym_pause = 0; rc = genphy_read_master_slave(phydev); if (rc < 0) return rc; rc = genphy_read_status_fixed(phydev); if (rc < 0) return rc; return rc; } static int lan87xx_config_aneg(struct phy_device *phydev) { u16 ctl = 0; int ret; switch (phydev->master_slave_set) { case MASTER_SLAVE_CFG_MASTER_FORCE: ctl |= CTL1000_AS_MASTER; break; case MASTER_SLAVE_CFG_SLAVE_FORCE: break; case MASTER_SLAVE_CFG_UNKNOWN: case MASTER_SLAVE_CFG_UNSUPPORTED: return 0; default: phydev_warn(phydev, "Unsupported Master/Slave mode\n"); return -EOPNOTSUPP; } ret = phy_modify_changed(phydev, MII_CTRL1000, CTL1000_AS_MASTER, ctl); if (ret == 1) return phy_init_hw(phydev); return ret; } static int lan87xx_get_sqi(struct phy_device *phydev) { u8 sqi_value = 0; int rc; rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP, T1_COEF_RW_CTL_CFG, 0x0301); if (rc < 0) return rc; rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_DSP, T1_DCQ_SQI_REG, 0x0); if (rc < 0) return rc; sqi_value = FIELD_GET(T1_DCQ_SQI_MSK, rc); return sqi_value; } static int lan87xx_get_sqi_max(struct phy_device *phydev) { return LAN87XX_MAX_SQI; } static struct phy_driver microchip_t1_phy_driver[] = { { PHY_ID_MATCH_MODEL(PHY_ID_LAN87XX), .name = "Microchip LAN87xx T1", .flags = PHY_POLL_CABLE_TEST, .features = PHY_BASIC_T1_FEATURES, .config_init = lan87xx_config_init, .config_intr = lan87xx_phy_config_intr, .handle_interrupt = lan87xx_handle_interrupt, .suspend = genphy_suspend, .resume = genphy_resume, .config_aneg = lan87xx_config_aneg, .read_status = lan87xx_read_status, .get_sqi = lan87xx_get_sqi, .get_sqi_max = lan87xx_get_sqi_max, .cable_test_start = lan87xx_cable_test_start, .cable_test_get_status = lan87xx_cable_test_get_status, }, { PHY_ID_MATCH_MODEL(PHY_ID_LAN937X), .name = "Microchip LAN937x T1", .flags = PHY_POLL_CABLE_TEST, .features = PHY_BASIC_T1_FEATURES, .config_init = lan87xx_config_init, .config_intr = lan87xx_phy_config_intr, .handle_interrupt = lan87xx_handle_interrupt, .suspend = genphy_suspend, .resume = genphy_resume, .config_aneg = lan87xx_config_aneg, .read_status = lan87xx_read_status, .get_sqi = lan87xx_get_sqi, .get_sqi_max = lan87xx_get_sqi_max, .cable_test_start = lan87xx_cable_test_start, .cable_test_get_status = lan87xx_cable_test_get_status, } }; module_phy_driver(microchip_t1_phy_driver); static struct mdio_device_id __maybe_unused microchip_t1_tbl[] = { { PHY_ID_MATCH_MODEL(PHY_ID_LAN87XX) }, { PHY_ID_MATCH_MODEL(PHY_ID_LAN937X) }, { } }; MODULE_DEVICE_TABLE(mdio, microchip_t1_tbl); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");
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