diff options
Diffstat (limited to 'drivers/net/ethernet/qualcomm/emac')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/Makefile | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c | 245 | ||||
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c | 210 | ||||
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 538 | ||||
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-sgmii.h | 5 |
5 files changed, 478 insertions, 523 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/Makefile b/drivers/net/ethernet/qualcomm/emac/Makefile index 01ee144c6386..204b787183ab 100644 --- a/drivers/net/ethernet/qualcomm/emac/Makefile +++ b/drivers/net/ethernet/qualcomm/emac/Makefile @@ -4,4 +4,5 @@ obj-$(CONFIG_QCOM_EMAC) += qcom-emac.o -qcom-emac-objs := emac.o emac-mac.o emac-phy.o emac-sgmii.o +qcom-emac-objs := emac.o emac-mac.o emac-phy.o emac-sgmii.o \ + emac-sgmii-fsm9900.o emac-sgmii-qdf2432.o diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c new file mode 100644 index 000000000000..af690e1a6e7b --- /dev/null +++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c @@ -0,0 +1,245 @@ +/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* Qualcomm Technologies, Inc. FSM9900 EMAC SGMII Controller driver. + */ + +#include <linux/iopoll.h> +#include "emac.h" + +/* EMAC_QSERDES register offsets */ +#define EMAC_QSERDES_COM_SYS_CLK_CTRL 0x0000 +#define EMAC_QSERDES_COM_PLL_CNTRL 0x0014 +#define EMAC_QSERDES_COM_PLL_IP_SETI 0x0018 +#define EMAC_QSERDES_COM_PLL_CP_SETI 0x0024 +#define EMAC_QSERDES_COM_PLL_IP_SETP 0x0028 +#define EMAC_QSERDES_COM_PLL_CP_SETP 0x002c +#define EMAC_QSERDES_COM_SYSCLK_EN_SEL 0x0038 +#define EMAC_QSERDES_COM_RESETSM_CNTRL 0x0040 +#define EMAC_QSERDES_COM_PLLLOCK_CMP1 0x0044 +#define EMAC_QSERDES_COM_PLLLOCK_CMP2 0x0048 +#define EMAC_QSERDES_COM_PLLLOCK_CMP3 0x004c +#define EMAC_QSERDES_COM_PLLLOCK_CMP_EN 0x0050 +#define EMAC_QSERDES_COM_DEC_START1 0x0064 +#define EMAC_QSERDES_COM_DIV_FRAC_START1 0x0098 +#define EMAC_QSERDES_COM_DIV_FRAC_START2 0x009c +#define EMAC_QSERDES_COM_DIV_FRAC_START3 0x00a0 +#define EMAC_QSERDES_COM_DEC_START2 0x00a4 +#define EMAC_QSERDES_COM_PLL_CRCTRL 0x00ac +#define EMAC_QSERDES_COM_RESET_SM 0x00bc +#define EMAC_QSERDES_TX_BIST_MODE_LANENO 0x0100 +#define EMAC_QSERDES_TX_TX_EMP_POST1_LVL 0x0108 +#define EMAC_QSERDES_TX_TX_DRV_LVL 0x010c +#define EMAC_QSERDES_TX_LANE_MODE 0x0150 +#define EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN 0x0170 +#define EMAC_QSERDES_RX_CDR_CONTROL 0x0200 +#define EMAC_QSERDES_RX_CDR_CONTROL2 0x0210 +#define EMAC_QSERDES_RX_RX_EQ_GAIN12 0x0230 + +/* EMAC_SGMII register offsets */ +#define EMAC_SGMII_PHY_SERDES_START 0x0000 +#define EMAC_SGMII_PHY_CMN_PWR_CTRL 0x0004 +#define EMAC_SGMII_PHY_RX_PWR_CTRL 0x0008 +#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x000C +#define EMAC_SGMII_PHY_LANE_CTRL1 0x0018 +#define EMAC_SGMII_PHY_CDR_CTRL0 0x0058 +#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x0080 +#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x00b4 + +#define PLL_IPSETI(x) ((x) & 0x3f) + +#define PLL_CPSETI(x) ((x) & 0xff) + +#define PLL_IPSETP(x) ((x) & 0x3f) + +#define PLL_CPSETP(x) ((x) & 0x1f) + +#define PLL_RCTRL(x) (((x) & 0xf) << 4) +#define PLL_CCTRL(x) ((x) & 0xf) + +#define LANE_MODE(x) ((x) & 0x1f) + +#define SYSCLK_CM BIT(4) +#define SYSCLK_AC_COUPLE BIT(3) + +#define OCP_EN BIT(5) +#define PLL_DIV_FFEN BIT(2) +#define PLL_DIV_ORD BIT(1) + +#define SYSCLK_SEL_CMOS BIT(3) + +#define FRQ_TUNE_MODE BIT(4) + +#define PLLLOCK_CMP_EN BIT(0) + +#define DEC_START1_MUX BIT(7) +#define DEC_START1(x) ((x) & 0x7f) + +#define DIV_FRAC_START_MUX BIT(7) +#define DIV_FRAC_START(x) ((x) & 0x7f) + +#define DIV_FRAC_START3_MUX BIT(4) +#define DIV_FRAC_START3(x) ((x) & 0xf) + +#define DEC_START2_MUX BIT(1) +#define DEC_START2 BIT(0) + +#define READY BIT(5) + +#define TX_EMP_POST1_LVL_MUX BIT(5) +#define TX_EMP_POST1_LVL(x) ((x) & 0x1f) + +#define TX_DRV_LVL_MUX BIT(4) +#define TX_DRV_LVL(x) ((x) & 0xf) + +#define EMP_EN_MUX BIT(1) +#define EMP_EN BIT(0) + +#define SECONDORDERENABLE BIT(6) +#define FIRSTORDER_THRESH(x) (((x) & 0x7) << 3) +#define SECONDORDERGAIN(x) ((x) & 0x7) + +#define RX_EQ_GAIN2(x) (((x) & 0xf) << 4) +#define RX_EQ_GAIN1(x) ((x) & 0xf) + +#define SERDES_START BIT(0) + +#define BIAS_EN BIT(6) +#define PLL_EN BIT(5) +#define SYSCLK_EN BIT(4) +#define CLKBUF_L_EN BIT(3) +#define PLL_TXCLK_EN BIT(1) +#define PLL_RXCLK_EN BIT(0) + +#define L0_RX_SIGDET_EN BIT(7) +#define L0_RX_TERM_MODE(x) (((x) & 3) << 4) +#define L0_RX_I_EN BIT(1) + +#define L0_TX_EN BIT(5) +#define L0_CLKBUF_EN BIT(4) +#define L0_TRAN_BIAS_EN BIT(1) + +#define L0_RX_EQUALIZE_ENABLE BIT(6) +#define L0_RESET_TSYNC_EN BIT(4) +#define L0_DRV_LVL(x) ((x) & 0xf) + +#define PWRDN_B BIT(0) +#define CDR_MAX_CNT(x) ((x) & 0xff) + +#define PLLLOCK_CMP(x) ((x) & 0xff) + +#define SERDES_START_WAIT_TIMES 100 + +struct emac_reg_write { + unsigned int offset; + u32 val; +}; + +static void emac_reg_write_all(void __iomem *base, + const struct emac_reg_write *itr, size_t size) +{ + size_t i; + + for (i = 0; i < size; ++itr, ++i) + writel(itr->val, base + itr->offset); +} + +static const struct emac_reg_write physical_coding_sublayer_programming[] = { + {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, + {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, + {EMAC_SGMII_PHY_CMN_PWR_CTRL, + BIAS_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | PLL_RXCLK_EN}, + {EMAC_SGMII_PHY_TX_PWR_CTRL, L0_TX_EN | L0_CLKBUF_EN | L0_TRAN_BIAS_EN}, + {EMAC_SGMII_PHY_RX_PWR_CTRL, + L0_RX_SIGDET_EN | L0_RX_TERM_MODE(1) | L0_RX_I_EN}, + {EMAC_SGMII_PHY_CMN_PWR_CTRL, + BIAS_EN | PLL_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | + PLL_RXCLK_EN}, + {EMAC_SGMII_PHY_LANE_CTRL1, + L0_RX_EQUALIZE_ENABLE | L0_RESET_TSYNC_EN | L0_DRV_LVL(15)}, +}; + +static const struct emac_reg_write sysclk_refclk_setting[] = { + {EMAC_QSERDES_COM_SYSCLK_EN_SEL, SYSCLK_SEL_CMOS}, + {EMAC_QSERDES_COM_SYS_CLK_CTRL, SYSCLK_CM | SYSCLK_AC_COUPLE}, +}; + +static const struct emac_reg_write pll_setting[] = { + {EMAC_QSERDES_COM_PLL_IP_SETI, PLL_IPSETI(1)}, + {EMAC_QSERDES_COM_PLL_CP_SETI, PLL_CPSETI(59)}, + {EMAC_QSERDES_COM_PLL_IP_SETP, PLL_IPSETP(10)}, + {EMAC_QSERDES_COM_PLL_CP_SETP, PLL_CPSETP(9)}, + {EMAC_QSERDES_COM_PLL_CRCTRL, PLL_RCTRL(15) | PLL_CCTRL(11)}, + {EMAC_QSERDES_COM_PLL_CNTRL, OCP_EN | PLL_DIV_FFEN | PLL_DIV_ORD}, + {EMAC_QSERDES_COM_DEC_START1, DEC_START1_MUX | DEC_START1(2)}, + {EMAC_QSERDES_COM_DEC_START2, DEC_START2_MUX | DEC_START2}, + {EMAC_QSERDES_COM_DIV_FRAC_START1, + DIV_FRAC_START_MUX | DIV_FRAC_START(85)}, + {EMAC_QSERDES_COM_DIV_FRAC_START2, + DIV_FRAC_START_MUX | DIV_FRAC_START(42)}, + {EMAC_QSERDES_COM_DIV_FRAC_START3, + DIV_FRAC_START3_MUX | DIV_FRAC_START3(3)}, + {EMAC_QSERDES_COM_PLLLOCK_CMP1, PLLLOCK_CMP(43)}, + {EMAC_QSERDES_COM_PLLLOCK_CMP2, PLLLOCK_CMP(104)}, + {EMAC_QSERDES_COM_PLLLOCK_CMP3, PLLLOCK_CMP(0)}, + {EMAC_QSERDES_COM_PLLLOCK_CMP_EN, PLLLOCK_CMP_EN}, + {EMAC_QSERDES_COM_RESETSM_CNTRL, FRQ_TUNE_MODE}, +}; + +static const struct emac_reg_write cdr_setting[] = { + {EMAC_QSERDES_RX_CDR_CONTROL, + SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(2)}, + {EMAC_QSERDES_RX_CDR_CONTROL2, + SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(4)}, +}; + +static const struct emac_reg_write tx_rx_setting[] = { + {EMAC_QSERDES_TX_BIST_MODE_LANENO, 0}, + {EMAC_QSERDES_TX_TX_DRV_LVL, TX_DRV_LVL_MUX | TX_DRV_LVL(15)}, + {EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN, EMP_EN_MUX | EMP_EN}, + {EMAC_QSERDES_TX_TX_EMP_POST1_LVL, + TX_EMP_POST1_LVL_MUX | TX_EMP_POST1_LVL(1)}, + {EMAC_QSERDES_RX_RX_EQ_GAIN12, RX_EQ_GAIN2(15) | RX_EQ_GAIN1(15)}, + {EMAC_QSERDES_TX_LANE_MODE, LANE_MODE(8)}, +}; + +int emac_sgmii_init_fsm9900(struct emac_adapter *adpt) +{ + struct emac_phy *phy = &adpt->phy; + unsigned int i; + + emac_reg_write_all(phy->base, physical_coding_sublayer_programming, + ARRAY_SIZE(physical_coding_sublayer_programming)); + emac_reg_write_all(phy->base, sysclk_refclk_setting, + ARRAY_SIZE(sysclk_refclk_setting)); + emac_reg_write_all(phy->base, pll_setting, ARRAY_SIZE(pll_setting)); + emac_reg_write_all(phy->base, cdr_setting, ARRAY_SIZE(cdr_setting)); + emac_reg_write_all(phy->base, tx_rx_setting, ARRAY_SIZE(tx_rx_setting)); + + /* Power up the Ser/Des engine */ + writel(SERDES_START, phy->base + EMAC_SGMII_PHY_SERDES_START); + + for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { + if (readl(phy->base + EMAC_QSERDES_COM_RESET_SM) & READY) + break; + usleep_range(100, 200); + } + + if (i == SERDES_START_WAIT_TIMES) { + netdev_err(adpt->netdev, "error: ser/des failed to start\n"); + return -EIO; + } + /* Mask out all the SGMII Interrupt */ + writel(0, phy->base + EMAC_SGMII_PHY_INTERRUPT_MASK); + + return 0; +} diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c new file mode 100644 index 000000000000..6170200d7479 --- /dev/null +++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c @@ -0,0 +1,210 @@ +/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* Qualcomm Technologies, Inc. QDF2432 EMAC SGMII Controller driver. + */ + +#include <linux/iopoll.h> +#include "emac.h" + +/* EMAC_SGMII register offsets */ +#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x000C +#define EMAC_SGMII_PHY_LANE_CTRL1 0x0018 +#define EMAC_SGMII_PHY_CDR_CTRL0 0x0058 +#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x0080 +#define EMAC_SGMII_PHY_RESET_CTRL 0x00a8 +#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x00b4 + +/* SGMII digital lane registers */ +#define EMAC_SGMII_LN_DRVR_CTRL0 0x000C +#define EMAC_SGMII_LN_DRVR_TAP_EN 0x0018 +#define EMAC_SGMII_LN_TX_MARGINING 0x001C +#define EMAC_SGMII_LN_TX_PRE 0x0020 +#define EMAC_SGMII_LN_TX_POST 0x0024 +#define EMAC_SGMII_LN_TX_BAND_MODE 0x0060 +#define EMAC_SGMII_LN_LANE_MODE 0x0064 +#define EMAC_SGMII_LN_PARALLEL_RATE 0x0078 +#define EMAC_SGMII_LN_CML_CTRL_MODE0 0x00B8 +#define EMAC_SGMII_LN_MIXER_CTRL_MODE0 0x00D0 +#define EMAC_SGMII_LN_VGA_INITVAL 0x0134 +#define EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0 0x017C +#define EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0 0x0188 +#define EMAC_SGMII_LN_UCDR_SO_CONFIG 0x0194 +#define EMAC_SGMII_LN_RX_BAND 0x019C +#define EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0 0x01B8 +#define EMAC_SGMII_LN_RSM_CONFIG 0x01F0 +#define EMAC_SGMII_LN_SIGDET_ENABLES 0x0224 +#define EMAC_SGMII_LN_SIGDET_CNTRL 0x0228 +#define EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL 0x022C +#define EMAC_SGMII_LN_RX_EN_SIGNAL 0x02A0 +#define EMAC_SGMII_LN_RX_MISC_CNTRL0 0x02AC +#define EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV 0x02BC + +/* SGMII digital lane register values */ +#define UCDR_STEP_BY_TWO_MODE0 BIT(7) +#define UCDR_xO_GAIN_MODE(x) ((x) & 0x7f) +#define UCDR_ENABLE BIT(6) +#define UCDR_SO_SATURATION(x) ((x) & 0x3f) + +#define SIGDET_LP_BYP_PS4 BIT(7) +#define SIGDET_EN_PS0_TO_PS2 BIT(6) + +#define TXVAL_VALID_INIT BIT(4) +#define KR_PCIGEN3_MODE BIT(0) + +#define MAIN_EN BIT(0) + +#define TX_MARGINING_MUX BIT(6) +#define TX_MARGINING(x) ((x) & 0x3f) + +#define TX_PRE_MUX BIT(6) + +#define TX_POST_MUX BIT(6) + +#define CML_GEAR_MODE(x) (((x) & 7) << 3) +#define CML2CMOS_IBOOST_MODE(x) ((x) & 7) + +#define MIXER_LOADB_MODE(x) (((x) & 0xf) << 2) +#define MIXER_DATARATE_MODE(x) ((x) & 3) + +#define VGA_THRESH_DFE(x) ((x) & 0x3f) + +#define SIGDET_LP_BYP_PS0_TO_PS2 BIT(5) +#define SIGDET_FLT_BYP BIT(0) + +#define SIGDET_LVL(x) (((x) & 0xf) << 4) + +#define SIGDET_DEGLITCH_CTRL(x) (((x) & 0xf) << 1) + +#define DRVR_LOGIC_CLK_EN BIT(4) +#define DRVR_LOGIC_CLK_DIV(x) ((x) & 0xf) + +#define PARALLEL_RATE_MODE0(x) ((x) & 0x3) + +#define BAND_MODE0(x) ((x) & 0x3) + +#define LANE_MODE(x) ((x) & 0x1f) + +#define CDR_PD_SEL_MODE0(x) (((x) & 0x3) << 5) +#define BYPASS_RSM_SAMP_CAL BIT(1) +#define BYPASS_RSM_DLL_CAL BIT(0) + +#define L0_RX_EQUALIZE_ENABLE BIT(6) + +#define PWRDN_B BIT(0) + +#define CDR_MAX_CNT(x) ((x) & 0xff) + +#define SERDES_START_WAIT_TIMES 100 + +struct emac_reg_write { + unsigned int offset; + u32 val; +}; + +static void emac_reg_write_all(void __iomem *base, + const struct emac_reg_write *itr, size_t size) +{ + size_t i; + + for (i = 0; i < size; ++itr, ++i) + writel(itr->val, base + itr->offset); +} + +static const struct emac_reg_write sgmii_laned[] = { + /* CDR Settings */ + {EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0, + UCDR_STEP_BY_TWO_MODE0 | UCDR_xO_GAIN_MODE(10)}, + {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(0)}, + {EMAC_SGMII_LN_UCDR_SO_CONFIG, UCDR_ENABLE | UCDR_SO_SATURATION(12)}, + + /* TX/RX Settings */ + {EMAC_SGMII_LN_RX_EN_SIGNAL, SIGDET_LP_BYP_PS4 | SIGDET_EN_PS0_TO_PS2}, + + {EMAC_SGMII_LN_DRVR_CTRL0, TXVAL_VALID_INIT | KR_PCIGEN3_MODE}, + {EMAC_SGMII_LN_DRVR_TAP_EN, MAIN_EN}, + {EMAC_SGMII_LN_TX_MARGINING, TX_MARGINING_MUX | TX_MARGINING(25)}, + {EMAC_SGMII_LN_TX_PRE, TX_PRE_MUX}, + {EMAC_SGMII_LN_TX_POST, TX_POST_MUX}, + + {EMAC_SGMII_LN_CML_CTRL_MODE0, + CML_GEAR_MODE(1) | CML2CMOS_IBOOST_MODE(1)}, + {EMAC_SGMII_LN_MIXER_CTRL_MODE0, + MIXER_LOADB_MODE(12) | MIXER_DATARATE_MODE(1)}, + {EMAC_SGMII_LN_VGA_INITVAL, VGA_THRESH_DFE(31)}, + {EMAC_SGMII_LN_SIGDET_ENABLES, + SIGDET_LP_BYP_PS0_TO_PS2 | SIGDET_FLT_BYP}, + {EMAC_SGMII_LN_SIGDET_CNTRL, SIGDET_LVL(8)}, + + {EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL, SIGDET_DEGLITCH_CTRL(4)}, + {EMAC_SGMII_LN_RX_MISC_CNTRL0, 0}, + {EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV, + DRVR_LOGIC_CLK_EN | DRVR_LOGIC_CLK_DIV(4)}, + + {EMAC_SGMII_LN_PARALLEL_RATE, PARALLEL_RATE_MODE0(1)}, + {EMAC_SGMII_LN_TX_BAND_MODE, BAND_MODE0(2)}, + {EMAC_SGMII_LN_RX_BAND, BAND_MODE0(3)}, + {EMAC_SGMII_LN_LANE_MODE, LANE_MODE(26)}, + {EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0, CDR_PD_SEL_MODE0(3)}, + {EMAC_SGMII_LN_RSM_CONFIG, BYPASS_RSM_SAMP_CAL | BYPASS_RSM_DLL_CAL}, +}; + +static const struct emac_reg_write physical_coding_sublayer_programming[] = { + {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, + {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, + {EMAC_SGMII_PHY_TX_PWR_CTRL, 0}, + {EMAC_SGMII_PHY_LANE_CTRL1, L0_RX_EQUALIZE_ENABLE}, +}; + +int emac_sgmii_init_qdf2432(struct emac_adapter *adpt) +{ + struct emac_phy *phy = &adpt->phy; + void __iomem *phy_regs = phy->base; + void __iomem *laned = phy->digital; + unsigned int i; + u32 lnstatus; + + /* PCS lane-x init */ + emac_reg_write_all(phy->base, physical_coding_sublayer_programming, + ARRAY_SIZE(physical_coding_sublayer_programming)); + + /* SGMII lane-x init */ + emac_reg_write_all(phy->digital, sgmii_laned, ARRAY_SIZE(sgmii_laned)); + + /* Power up PCS and start reset lane state machine */ + + writel(0, phy_regs + EMAC_SGMII_PHY_RESET_CTRL); + writel(1, laned + SGMII_LN_RSM_START); + + /* Wait for c_ready assertion */ + for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { + lnstatus = readl(phy_regs + SGMII_PHY_LN_LANE_STATUS); + if (lnstatus & BIT(1)) + break; + usleep_range(100, 200); + } + + if (i == SERDES_START_WAIT_TIMES) { + netdev_err(adpt->netdev, "SGMII failed to start\n"); + return -EIO; + } + + /* Disable digital and SERDES loopback */ + writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN0); + writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN2); + writel(0, phy_regs + SGMII_PHY_LN_CDR_CTRL1); + + /* Mask out all the SGMII Interrupt */ + writel(0, phy_regs + EMAC_SGMII_PHY_INTERRUPT_MASK); + + return 0; +} diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c index 72fe343c7a36..0b25c46dc15c 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c @@ -20,448 +20,33 @@ #include "emac-mac.h" #include "emac-sgmii.h" -/* EMAC_QSERDES register offsets */ -#define EMAC_QSERDES_COM_SYS_CLK_CTRL 0x000000 -#define EMAC_QSERDES_COM_PLL_CNTRL 0x000014 -#define EMAC_QSERDES_COM_PLL_IP_SETI 0x000018 -#define EMAC_QSERDES_COM_PLL_CP_SETI 0x000024 -#define EMAC_QSERDES_COM_PLL_IP_SETP 0x000028 -#define EMAC_QSERDES_COM_PLL_CP_SETP 0x00002c -#define EMAC_QSERDES_COM_SYSCLK_EN_SEL 0x000038 -#define EMAC_QSERDES_COM_RESETSM_CNTRL 0x000040 -#define EMAC_QSERDES_COM_PLLLOCK_CMP1 0x000044 -#define EMAC_QSERDES_COM_PLLLOCK_CMP2 0x000048 -#define EMAC_QSERDES_COM_PLLLOCK_CMP3 0x00004c -#define EMAC_QSERDES_COM_PLLLOCK_CMP_EN 0x000050 -#define EMAC_QSERDES_COM_DEC_START1 0x000064 -#define EMAC_QSERDES_COM_DIV_FRAC_START1 0x000098 -#define EMAC_QSERDES_COM_DIV_FRAC_START2 0x00009c -#define EMAC_QSERDES_COM_DIV_FRAC_START3 0x0000a0 -#define EMAC_QSERDES_COM_DEC_START2 0x0000a4 -#define EMAC_QSERDES_COM_PLL_CRCTRL 0x0000ac -#define EMAC_QSERDES_COM_RESET_SM 0x0000bc -#define EMAC_QSERDES_TX_BIST_MODE_LANENO 0x000100 -#define EMAC_QSERDES_TX_TX_EMP_POST1_LVL 0x000108 -#define EMAC_QSERDES_TX_TX_DRV_LVL 0x00010c -#define EMAC_QSERDES_TX_LANE_MODE 0x000150 -#define EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN 0x000170 -#define EMAC_QSERDES_RX_CDR_CONTROL 0x000200 -#define EMAC_QSERDES_RX_CDR_CONTROL2 0x000210 -#define EMAC_QSERDES_RX_RX_EQ_GAIN12 0x000230 - /* EMAC_SGMII register offsets */ -#define EMAC_SGMII_PHY_SERDES_START 0x000000 -#define EMAC_SGMII_PHY_CMN_PWR_CTRL 0x000004 -#define EMAC_SGMII_PHY_RX_PWR_CTRL 0x000008 -#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x00000C -#define EMAC_SGMII_PHY_LANE_CTRL1 0x000018 -#define EMAC_SGMII_PHY_AUTONEG_CFG2 0x000048 -#define EMAC_SGMII_PHY_CDR_CTRL0 0x000058 -#define EMAC_SGMII_PHY_SPEED_CFG1 0x000074 -#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x000080 -#define EMAC_SGMII_PHY_RESET_CTRL 0x0000a8 -#define EMAC_SGMII_PHY_IRQ_CMD 0x0000ac -#define EMAC_SGMII_PHY_INTERRUPT_CLEAR 0x0000b0 -#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x0000b4 -#define EMAC_SGMII_PHY_INTERRUPT_STATUS 0x0000b8 -#define EMAC_SGMII_PHY_RX_CHK_STATUS 0x0000d4 -#define EMAC_SGMII_PHY_AUTONEG0_STATUS 0x0000e0 -#define EMAC_SGMII_PHY_AUTONEG1_STATUS 0x0000e4 - -/* EMAC_QSERDES_COM_PLL_IP_SETI */ -#define PLL_IPSETI(x) ((x) & 0x3f) - -/* EMAC_QSERDES_COM_PLL_CP_SETI */ -#define PLL_CPSETI(x) ((x) & 0xff) - -/* EMAC_QSERDES_COM_PLL_IP_SETP */ -#define PLL_IPSETP(x) ((x) & 0x3f) - -/* EMAC_QSERDES_COM_PLL_CP_SETP */ -#define PLL_CPSETP(x) ((x) & 0x1f) - -/* EMAC_QSERDES_COM_PLL_CRCTRL */ -#define PLL_RCTRL(x) (((x) & 0xf) << 4) -#define PLL_CCTRL(x) ((x) & 0xf) - -/* SGMII v2 PHY registers per lane */ -#define EMAC_SGMII_PHY_LN_OFFSET 0x0400 - -/* SGMII v2 digital lane registers */ -#define EMAC_SGMII_LN_DRVR_CTRL0 0x00C -#define EMAC_SGMII_LN_DRVR_TAP_EN 0x018 -#define EMAC_SGMII_LN_TX_MARGINING 0x01C -#define EMAC_SGMII_LN_TX_PRE 0x020 -#define EMAC_SGMII_LN_TX_POST 0x024 -#define EMAC_SGMII_LN_TX_BAND_MODE 0x060 -#define EMAC_SGMII_LN_LANE_MODE 0x064 -#define EMAC_SGMII_LN_PARALLEL_RATE 0x078 -#define EMAC_SGMII_LN_CML_CTRL_MODE0 0x0B8 -#define EMAC_SGMII_LN_MIXER_CTRL_MODE0 0x0D0 -#define EMAC_SGMII_LN_VGA_INITVAL 0x134 -#define EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0 0x17C -#define EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0 0x188 -#define EMAC_SGMII_LN_UCDR_SO_CONFIG 0x194 -#define EMAC_SGMII_LN_RX_BAND 0x19C -#define EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0 0x1B8 -#define EMAC_SGMII_LN_RSM_CONFIG 0x1F0 -#define EMAC_SGMII_LN_SIGDET_ENABLES 0x224 -#define EMAC_SGMII_LN_SIGDET_CNTRL 0x228 -#define EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL 0x22C -#define EMAC_SGMII_LN_RX_EN_SIGNAL 0x2A0 -#define EMAC_SGMII_LN_RX_MISC_CNTRL0 0x2AC -#define EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV 0x2BC - -/* SGMII v2 digital lane register values */ -#define UCDR_STEP_BY_TWO_MODE0 BIT(7) -#define UCDR_xO_GAIN_MODE(x) ((x) & 0x7f) -#define UCDR_ENABLE BIT(6) -#define UCDR_SO_SATURATION(x) ((x) & 0x3f) -#define SIGDET_LP_BYP_PS4 BIT(7) -#define SIGDET_EN_PS0_TO_PS2 BIT(6) -#define EN_ACCOUPLEVCM_SW_MUX BIT(5) -#define EN_ACCOUPLEVCM_SW BIT(4) -#define RX_SYNC_EN BIT(3) -#define RXTERM_HIGHZ_PS5 BIT(2) -#define SIGDET_EN_PS3 BIT(1) -#define EN_ACCOUPLE_VCM_PS3 BIT(0) -#define UFS_MODE BIT(5) -#define TXVAL_VALID_INIT BIT(4) -#define TXVAL_VALID_MUX BIT(3) -#define TXVAL_VALID BIT(2) -#define USB3P1_MODE BIT(1) -#define KR_PCIGEN3_MODE BIT(0) -#define PRE_EN BIT(3) -#define POST_EN BIT(2) -#define MAIN_EN_MUX BIT(1) -#define MAIN_EN BIT(0) -#define TX_MARGINING_MUX BIT(6) -#define TX_MARGINING(x) ((x) & 0x3f) -#define TX_PRE_MUX BIT(6) -#define TX_PRE(x) ((x) & 0x3f) -#define TX_POST_MUX BIT(6) -#define TX_POST(x) ((x) & 0x3f) -#define CML_GEAR_MODE(x) (((x) & 7) << 3) -#define CML2CMOS_IBOOST_MODE(x) ((x) & 7) -#define MIXER_LOADB_MODE(x) (((x) & 0xf) << 2) -#define MIXER_DATARATE_MODE(x) ((x) & 3) -#define VGA_THRESH_DFE(x) ((x) & 0x3f) -#define SIGDET_LP_BYP_PS0_TO_PS2 BIT(5) -#define SIGDET_LP_BYP_MUX BIT(4) -#define SIGDET_LP_BYP BIT(3) -#define SIGDET_EN_MUX BIT(2) -#define SIGDET_EN BIT(1) -#define SIGDET_FLT_BYP BIT(0) -#define SIGDET_LVL(x) (((x) & 0xf) << 4) -#define SIGDET_BW_CTRL(x) ((x) & 0xf) -#define SIGDET_DEGLITCH_CTRL(x) (((x) & 0xf) << 1) -#define SIGDET_DEGLITCH_BYP BIT(0) -#define INVERT_PCS_RX_CLK BIT(7) -#define PWM_EN BIT(6) -#define RXBIAS_SEL(x) (((x) & 0x3) << 4) -#define EBDAC_SIGN BIT(3) -#define EDAC_SIGN BIT(2) -#define EN_AUXTAP1SIGN_INVERT BIT(1) -#define EN_DAC_CHOPPING BIT(0) -#define DRVR_LOGIC_CLK_EN BIT(4) -#define DRVR_LOGIC_CLK_DIV(x) ((x) & 0xf) -#define PARALLEL_RATE_MODE2(x) (((x) & 0x3) << 4) -#define PARALLEL_RATE_MODE1(x) (((x) & 0x3) << 2) -#define PARALLEL_RATE_MODE0(x) ((x) & 0x3) -#define BAND_MODE2(x) (((x) & 0x3) << 4) -#define BAND_MODE1(x) (((x) & 0x3) << 2) -#define BAND_MODE0(x) ((x) & 0x3) -#define LANE_SYNC_MODE BIT(5) -#define LANE_MODE(x) ((x) & 0x1f) -#define CDR_PD_SEL_MODE0(x) (((x) & 0x3) << 5) -#define EN_DLL_MODE0 BIT(4) -#define EN_IQ_DCC_MODE0 BIT(3) -#define EN_IQCAL_MODE0 BIT(2) -#define EN_QPATH_MODE0 BIT(1) -#define EN_EPATH_MODE0 BIT(0) -#define FORCE_TSYNC_ACK BIT(7) -#define FORCE_CMN_ACK BIT(6) -#define FORCE_CMN_READY BIT(5) -#define EN_RCLK_DEGLITCH BIT(4) -#define BYPASS_RSM_CDR_RESET BIT(3) -#define BYPASS_RSM_TSYNC BIT(2) -#define BYPASS_RSM_SAMP_CAL BIT(1) -#define BYPASS_RSM_DLL_CAL BIT(0) - -/* EMAC_QSERDES_COM_SYS_CLK_CTRL */ -#define SYSCLK_CM BIT(4) -#define SYSCLK_AC_COUPLE BIT(3) - -/* EMAC_QSERDES_COM_PLL_CNTRL */ -#define OCP_EN BIT(5) -#define PLL_DIV_FFEN BIT(2) -#define PLL_DIV_ORD BIT(1) - -/* EMAC_QSERDES_COM_SYSCLK_EN_SEL */ -#define SYSCLK_SEL_CMOS BIT(3) - -/* EMAC_QSERDES_COM_RESETSM_CNTRL */ -#define FRQ_TUNE_MODE BIT(4) - -/* EMAC_QSERDES_COM_PLLLOCK_CMP_EN */ -#define PLLLOCK_CMP_EN BIT(0) - -/* EMAC_QSERDES_COM_DEC_START1 */ -#define DEC_START1_MUX BIT(7) -#define DEC_START1(x) ((x) & 0x7f) - -/* EMAC_QSERDES_COM_DIV_FRAC_START1 * EMAC_QSERDES_COM_DIV_FRAC_START2 */ -#define DIV_FRAC_START_MUX BIT(7) -#define DIV_FRAC_START(x) ((x) & 0x7f) - -/* EMAC_QSERDES_COM_DIV_FRAC_START3 */ -#define DIV_FRAC_START3_MUX BIT(4) -#define DIV_FRAC_START3(x) ((x) & 0xf) - -/* EMAC_QSERDES_COM_DEC_START2 */ -#define DEC_START2_MUX BIT(1) -#define DEC_START2 BIT(0) - -/* EMAC_QSERDES_COM_RESET_SM */ -#define READY BIT(5) - -/* EMAC_QSERDES_TX_TX_EMP_POST1_LVL */ -#define TX_EMP_POST1_LVL_MUX BIT(5) -#define TX_EMP_POST1_LVL(x) ((x) & 0x1f) -#define TX_EMP_POST1_LVL_BMSK 0x1f -#define TX_EMP_POST1_LVL_SHFT 0 - -/* EMAC_QSERDES_TX_TX_DRV_LVL */ -#define TX_DRV_LVL_MUX BIT(4) -#define TX_DRV_LVL(x) ((x) & 0xf) - -/* EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN */ -#define EMP_EN_MUX BIT(1) -#define EMP_EN BIT(0) - -/* EMAC_QSERDES_RX_CDR_CONTROL & EMAC_QSERDES_RX_CDR_CONTROL2 */ -#define HBW_PD_EN BIT(7) -#define SECONDORDERENABLE BIT(6) -#define FIRSTORDER_THRESH(x) (((x) & 0x7) << 3) -#define SECONDORDERGAIN(x) ((x) & 0x7) - -/* EMAC_QSERDES_RX_RX_EQ_GAIN12 */ -#define RX_EQ_GAIN2(x) (((x) & 0xf) << 4) -#define RX_EQ_GAIN1(x) ((x) & 0xf) - -/* EMAC_SGMII_PHY_SERDES_START */ -#define SERDES_START BIT(0) - -/* EMAC_SGMII_PHY_CMN_PWR_CTRL */ -#define BIAS_EN BIT(6) -#define PLL_EN BIT(5) -#define SYSCLK_EN BIT(4) -#define CLKBUF_L_EN BIT(3) -#define PLL_TXCLK_EN BIT(1) -#define PLL_RXCLK_EN BIT(0) - -/* EMAC_SGMII_PHY_RX_PWR_CTRL */ -#define L0_RX_SIGDET_EN BIT(7) -#define L0_RX_TERM_MODE(x) (((x) & 3) << 4) -#define L0_RX_I_EN BIT(1) - -/* EMAC_SGMII_PHY_TX_PWR_CTRL */ -#define L0_TX_EN BIT(5) -#define L0_CLKBUF_EN BIT(4) -#define L0_TRAN_BIAS_EN BIT(1) - -/* EMAC_SGMII_PHY_LANE_CTRL1 */ -#define L0_RX_EQUALIZE_ENABLE BIT(6) -#define L0_RESET_TSYNC_EN BIT(4) -#define L0_DRV_LVL(x) ((x) & 0xf) - -/* EMAC_SGMII_PHY_AUTONEG_CFG2 */ +#define EMAC_SGMII_PHY_AUTONEG_CFG2 0x0048 +#define EMAC_SGMII_PHY_SPEED_CFG1 0x0074 +#define EMAC_SGMII_PHY_IRQ_CMD 0x00ac +#define EMAC_SGMII_PHY_INTERRUPT_CLEAR 0x00b0 +#define EMAC_SGMII_PHY_INTERRUPT_STATUS 0x00b8 + #define FORCE_AN_TX_CFG BIT(5) #define FORCE_AN_RX_CFG BIT(4) #define AN_ENABLE BIT(0) -/* EMAC_SGMII_PHY_SPEED_CFG1 */ #define DUPLEX_MODE BIT(4) #define SPDMODE_1000 BIT(1) #define SPDMODE_100 BIT(0) #define SPDMODE_10 0 -#define SPDMODE_BMSK 3 -#define SPDMODE_SHFT 0 - -/* EMAC_SGMII_PHY_POW_DWN_CTRL0 */ -#define PWRDN_B BIT(0) -#define CDR_MAX_CNT(x) ((x) & 0xff) - -/* EMAC_QSERDES_TX_BIST_MODE_LANENO */ -#define BIST_LANE_NUMBER(x) (((x) & 3) << 5) -#define BISTMODE(x) ((x) & 0x1f) - -/* EMAC_QSERDES_COM_PLLLOCK_CMPx */ -#define PLLLOCK_CMP(x) ((x) & 0xff) -/* EMAC_SGMII_PHY_RESET_CTRL */ -#define PHY_SW_RESET BIT(0) - -/* EMAC_SGMII_PHY_IRQ_CMD */ #define IRQ_GLOBAL_CLEAR BIT(0) -/* EMAC_SGMII_PHY_INTERRUPT_MASK */ #define DECODE_CODE_ERR BIT(7) #define DECODE_DISP_ERR BIT(6) -#define PLL_UNLOCK BIT(5) -#define AN_ILLEGAL_TERM BIT(4) -#define SYNC_FAIL BIT(3) -#define AN_START BIT(2) -#define AN_END BIT(1) -#define AN_REQUEST BIT(0) #define SGMII_PHY_IRQ_CLR_WAIT_TIME 10 -#define SGMII_PHY_INTERRUPT_ERR (\ - DECODE_CODE_ERR |\ - DECODE_DISP_ERR) - -#define SGMII_ISR_AN_MASK (\ - AN_REQUEST |\ - AN_START |\ - AN_END |\ - AN_ILLEGAL_TERM |\ - PLL_UNLOCK |\ - SYNC_FAIL) - -#define SGMII_ISR_MASK (\ - SGMII_PHY_INTERRUPT_ERR |\ - SGMII_ISR_AN_MASK) - -/* SGMII TX_CONFIG */ -#define TXCFG_LINK 0x8000 -#define TXCFG_MODE_BMSK 0x1c00 -#define TXCFG_1000_FULL 0x1800 -#define TXCFG_100_FULL 0x1400 -#define TXCFG_100_HALF 0x0400 -#define TXCFG_10_FULL 0x1000 -#define TXCFG_10_HALF 0x0000 +#define SGMII_PHY_INTERRUPT_ERR (DECODE_CODE_ERR | DECODE_DISP_ERR) #define SERDES_START_WAIT_TIMES 100 -struct emac_reg_write { - unsigned int offset; - u32 val; -}; - -static void emac_reg_write_all(void __iomem *base, - const struct emac_reg_write *itr, size_t size) -{ - size_t i; - - for (i = 0; i < size; ++itr, ++i) - writel(itr->val, base + itr->offset); -} - -static const struct emac_reg_write physical_coding_sublayer_programming_v1[] = { - {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, - {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, - {EMAC_SGMII_PHY_CMN_PWR_CTRL, - BIAS_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | PLL_RXCLK_EN}, - {EMAC_SGMII_PHY_TX_PWR_CTRL, L0_TX_EN | L0_CLKBUF_EN | L0_TRAN_BIAS_EN}, - {EMAC_SGMII_PHY_RX_PWR_CTRL, - L0_RX_SIGDET_EN | L0_RX_TERM_MODE(1) | L0_RX_I_EN}, - {EMAC_SGMII_PHY_CMN_PWR_CTRL, - BIAS_EN | PLL_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | - PLL_RXCLK_EN}, - {EMAC_SGMII_PHY_LANE_CTRL1, - L0_RX_EQUALIZE_ENABLE | L0_RESET_TSYNC_EN | L0_DRV_LVL(15)}, -}; - -static const struct emac_reg_write sysclk_refclk_setting[] = { - {EMAC_QSERDES_COM_SYSCLK_EN_SEL, SYSCLK_SEL_CMOS}, - {EMAC_QSERDES_COM_SYS_CLK_CTRL, SYSCLK_CM | SYSCLK_AC_COUPLE}, -}; - -static const struct emac_reg_write pll_setting[] = { - {EMAC_QSERDES_COM_PLL_IP_SETI, PLL_IPSETI(1)}, - {EMAC_QSERDES_COM_PLL_CP_SETI, PLL_CPSETI(59)}, - {EMAC_QSERDES_COM_PLL_IP_SETP, PLL_IPSETP(10)}, - {EMAC_QSERDES_COM_PLL_CP_SETP, PLL_CPSETP(9)}, - {EMAC_QSERDES_COM_PLL_CRCTRL, PLL_RCTRL(15) | PLL_CCTRL(11)}, - {EMAC_QSERDES_COM_PLL_CNTRL, OCP_EN | PLL_DIV_FFEN | PLL_DIV_ORD}, - {EMAC_QSERDES_COM_DEC_START1, DEC_START1_MUX | DEC_START1(2)}, - {EMAC_QSERDES_COM_DEC_START2, DEC_START2_MUX | DEC_START2}, - {EMAC_QSERDES_COM_DIV_FRAC_START1, - DIV_FRAC_START_MUX | DIV_FRAC_START(85)}, - {EMAC_QSERDES_COM_DIV_FRAC_START2, - DIV_FRAC_START_MUX | DIV_FRAC_START(42)}, - {EMAC_QSERDES_COM_DIV_FRAC_START3, - DIV_FRAC_START3_MUX | DIV_FRAC_START3(3)}, - {EMAC_QSERDES_COM_PLLLOCK_CMP1, PLLLOCK_CMP(43)}, - {EMAC_QSERDES_COM_PLLLOCK_CMP2, PLLLOCK_CMP(104)}, - {EMAC_QSERDES_COM_PLLLOCK_CMP3, PLLLOCK_CMP(0)}, - {EMAC_QSERDES_COM_PLLLOCK_CMP_EN, PLLLOCK_CMP_EN}, - {EMAC_QSERDES_COM_RESETSM_CNTRL, FRQ_TUNE_MODE}, -}; - -static const struct emac_reg_write cdr_setting[] = { - {EMAC_QSERDES_RX_CDR_CONTROL, - SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(2)}, - {EMAC_QSERDES_RX_CDR_CONTROL2, - SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(4)}, -}; - -static const struct emac_reg_write tx_rx_setting[] = { - {EMAC_QSERDES_TX_BIST_MODE_LANENO, 0}, - {EMAC_QSERDES_TX_TX_DRV_LVL, TX_DRV_LVL_MUX | TX_DRV_LVL(15)}, - {EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN, EMP_EN_MUX | EMP_EN}, - {EMAC_QSERDES_TX_TX_EMP_POST1_LVL, - TX_EMP_POST1_LVL_MUX | TX_EMP_POST1_LVL(1)}, - {EMAC_QSERDES_RX_RX_EQ_GAIN12, RX_EQ_GAIN2(15) | RX_EQ_GAIN1(15)}, - {EMAC_QSERDES_TX_LANE_MODE, LANE_MODE(8)}, -}; - -static const struct emac_reg_write sgmii_v2_laned[] = { - /* CDR Settings */ - {EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0, - UCDR_STEP_BY_TWO_MODE0 | UCDR_xO_GAIN_MODE(10)}, - {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(0)}, - {EMAC_SGMII_LN_UCDR_SO_CONFIG, UCDR_ENABLE | UCDR_SO_SATURATION(12)}, - - /* TX/RX Settings */ - {EMAC_SGMII_LN_RX_EN_SIGNAL, SIGDET_LP_BYP_PS4 | SIGDET_EN_PS0_TO_PS2}, - - {EMAC_SGMII_LN_DRVR_CTRL0, TXVAL_VALID_INIT | KR_PCIGEN3_MODE}, - {EMAC_SGMII_LN_DRVR_TAP_EN, MAIN_EN}, - {EMAC_SGMII_LN_TX_MARGINING, TX_MARGINING_MUX | TX_MARGINING(25)}, - {EMAC_SGMII_LN_TX_PRE, TX_PRE_MUX}, - {EMAC_SGMII_LN_TX_POST, TX_POST_MUX}, - - {EMAC_SGMII_LN_CML_CTRL_MODE0, - CML_GEAR_MODE(1) | CML2CMOS_IBOOST_MODE(1)}, - {EMAC_SGMII_LN_MIXER_CTRL_MODE0, - MIXER_LOADB_MODE(12) | MIXER_DATARATE_MODE(1)}, - {EMAC_SGMII_LN_VGA_INITVAL, VGA_THRESH_DFE(31)}, - {EMAC_SGMII_LN_SIGDET_ENABLES, - SIGDET_LP_BYP_PS0_TO_PS2 | SIGDET_FLT_BYP}, - {EMAC_SGMII_LN_SIGDET_CNTRL, SIGDET_LVL(8)}, - - {EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL, SIGDET_DEGLITCH_CTRL(4)}, - {EMAC_SGMII_LN_RX_MISC_CNTRL0, 0}, - {EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV, - DRVR_LOGIC_CLK_EN | DRVR_LOGIC_CLK_DIV(4)}, - - {EMAC_SGMII_LN_PARALLEL_RATE, PARALLEL_RATE_MODE0(1)}, - {EMAC_SGMII_LN_TX_BAND_MODE, BAND_MODE0(2)}, - {EMAC_SGMII_LN_RX_BAND, BAND_MODE0(3)}, - {EMAC_SGMII_LN_LANE_MODE, LANE_MODE(26)}, - {EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0, CDR_PD_SEL_MODE0(3)}, - {EMAC_SGMII_LN_RSM_CONFIG, BYPASS_RSM_SAMP_CAL | BYPASS_RSM_DLL_CAL}, -}; - -static const struct emac_reg_write physical_coding_sublayer_programming_v2[] = { - {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, - {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, - {EMAC_SGMII_PHY_TX_PWR_CTRL, 0}, - {EMAC_SGMII_PHY_LANE_CTRL1, L0_RX_EQUALIZE_ENABLE}, -}; - static int emac_sgmii_link_init(struct emac_adapter *adpt) { struct phy_device *phydev = adpt->phydev; @@ -536,98 +121,6 @@ static int emac_sgmii_irq_clear(struct emac_adapter *adpt, u32 irq_bits) return 0; } -int emac_sgmii_init_v1(struct emac_adapter *adpt) -{ - struct emac_phy *phy = &adpt->phy; - unsigned int i; - int ret; - - ret = emac_sgmii_link_init(adpt); - if (ret) - return ret; - - emac_reg_write_all(phy->base, physical_coding_sublayer_programming_v1, - ARRAY_SIZE(physical_coding_sublayer_programming_v1)); - emac_reg_write_all(phy->base, sysclk_refclk_setting, - ARRAY_SIZE(sysclk_refclk_setting)); - emac_reg_write_all(phy->base, pll_setting, ARRAY_SIZE(pll_setting)); - emac_reg_write_all(phy->base, cdr_setting, ARRAY_SIZE(cdr_setting)); - emac_reg_write_all(phy->base, tx_rx_setting, - ARRAY_SIZE(tx_rx_setting)); - - /* Power up the Ser/Des engine */ - writel(SERDES_START, phy->base + EMAC_SGMII_PHY_SERDES_START); - - for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { - if (readl(phy->base + EMAC_QSERDES_COM_RESET_SM) & READY) - break; - usleep_range(100, 200); - } - - if (i == SERDES_START_WAIT_TIMES) { - netdev_err(adpt->netdev, "error: ser/des failed to start\n"); - return -EIO; - } - /* Mask out all the SGMII Interrupt */ - writel(0, phy->base + EMAC_SGMII_PHY_INTERRUPT_MASK); - - emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); - - return 0; -} - -int emac_sgmii_init_v2(struct emac_adapter *adpt) -{ - struct emac_phy *phy = &adpt->phy; - void __iomem *phy_regs = phy->base; - void __iomem *laned = phy->digital; - unsigned int i; - u32 lnstatus; - int ret; - - ret = emac_sgmii_link_init(adpt); - if (ret) - return ret; - - /* PCS lane-x init */ - emac_reg_write_all(phy->base, physical_coding_sublayer_programming_v2, - ARRAY_SIZE(physical_coding_sublayer_programming_v2)); - - /* SGMII lane-x init */ - emac_reg_write_all(phy->digital, - sgmii_v2_laned, ARRAY_SIZE(sgmii_v2_laned)); - - /* Power up PCS and start reset lane state machine */ - - writel(0, phy_regs + EMAC_SGMII_PHY_RESET_CTRL); - writel(1, laned + SGMII_LN_RSM_START); - - /* Wait for c_ready assertion */ - for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { - lnstatus = readl(phy_regs + SGMII_PHY_LN_LANE_STATUS); - if (lnstatus & BIT(1)) - break; - usleep_range(100, 200); - } - - if (i == SERDES_START_WAIT_TIMES) { - netdev_err(adpt->netdev, "SGMII failed to start\n"); - return -EIO; - } - - /* Disable digital and SERDES loopback */ - writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN0); - writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN2); - writel(0, phy_regs + SGMII_PHY_LN_CDR_CTRL1); - - /* Mask out all the SGMII Interrupt */ - writel(0, phy_regs + EMAC_SGMII_PHY_INTERRUPT_MASK); - - emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); - - return 0; -} - static void emac_sgmii_reset_prepare(struct emac_adapter *adpt) { struct emac_phy *phy = &adpt->phy; @@ -651,16 +144,19 @@ void emac_sgmii_reset(struct emac_adapter *adpt) { int ret; - clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000); emac_sgmii_reset_prepare(adpt); + ret = emac_sgmii_link_init(adpt); + if (ret) { + netdev_err(adpt->netdev, "unsupported link speed\n"); + return; + } + ret = adpt->phy.initialize(adpt); if (ret) netdev_err(adpt->netdev, "could not reinitialize internal PHY (error=%i)\n", ret); - - clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 125000000); } static int emac_sgmii_acpi_match(struct device *dev, void *data) @@ -668,7 +164,7 @@ static int emac_sgmii_acpi_match(struct device *dev, void *data) static const struct acpi_device_id match_table[] = { { .id = "QCOM8071", - .driver_data = (kernel_ulong_t)emac_sgmii_init_v2, + .driver_data = (kernel_ulong_t)emac_sgmii_init_qdf2432, }, {} }; @@ -684,11 +180,11 @@ static int emac_sgmii_acpi_match(struct device *dev, void *data) static const struct of_device_id emac_sgmii_dt_match[] = { { .compatible = "qcom,fsm9900-emac-sgmii", - .data = emac_sgmii_init_v1, + .data = emac_sgmii_init_fsm9900, }, { .compatible = "qcom,qdf2432-emac-sgmii", - .data = emac_sgmii_init_v2, + .data = emac_sgmii_init_qdf2432, }, {} }; @@ -765,6 +261,8 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) if (ret) goto error; + emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); + /* We've remapped the addresses, so we don't need the device any * more. of_find_device_by_node() says we should release it. */ diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h index ce79212ff403..e2bef145ec48 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h +++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h @@ -16,9 +16,10 @@ struct emac_adapter; struct platform_device; -int emac_sgmii_init_v1(struct emac_adapter *adpt); -int emac_sgmii_init_v2(struct emac_adapter *adpt); int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt); void emac_sgmii_reset(struct emac_adapter *adpt); +int emac_sgmii_init_fsm9900(struct emac_adapter *adpt); +int emac_sgmii_init_qdf2432(struct emac_adapter *adpt); + #endif |