| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mathieu Olivari | 1339 | 67.97% | 2 | 16.67% |
| Ansuel Smith | 463 | 23.50% | 2 | 16.67% |
| Joachim Eastwood | 75 | 3.81% | 1 | 8.33% |
| Johan Hovold | 42 | 2.13% | 1 | 8.33% |
| Jonathan McDowell | 23 | 1.17% | 3 | 25.00% |
| Stephen Boyd | 11 | 0.56% | 1 | 8.33% |
| Andrew Lunn | 10 | 0.51% | 1 | 8.33% |
| Nathan Chancellor | 7 | 0.36% | 1 | 8.33% |
| Total | 1970 | 12 |
/* * Qualcomm Atheros IPQ806x GMAC glue layer * * Copyright (C) 2015 The Linux Foundation * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <linux/device.h> #include <linux/platform_device.h> #include <linux/phy.h> #include <linux/regmap.h> #include <linux/clk.h> #include <linux/reset.h> #include <linux/of_net.h> #include <linux/mfd/syscon.h> #include <linux/stmmac.h> #include <linux/of_mdio.h> #include <linux/module.h> #include <linux/sys_soc.h> #include <linux/bitfield.h> #include "stmmac_platform.h" #define NSS_COMMON_CLK_GATE 0x8 #define NSS_COMMON_CLK_GATE_PTP_EN(x) BIT(0x10 + x) #define NSS_COMMON_CLK_GATE_RGMII_RX_EN(x) BIT(0x9 + (x * 2)) #define NSS_COMMON_CLK_GATE_RGMII_TX_EN(x) BIT(0x8 + (x * 2)) #define NSS_COMMON_CLK_GATE_GMII_RX_EN(x) BIT(0x4 + x) #define NSS_COMMON_CLK_GATE_GMII_TX_EN(x) BIT(0x0 + x) #define NSS_COMMON_CLK_DIV0 0xC #define NSS_COMMON_CLK_DIV_OFFSET(x) (x * 8) #define NSS_COMMON_CLK_DIV_MASK 0x7f #define NSS_COMMON_CLK_SRC_CTRL 0x14 #define NSS_COMMON_CLK_SRC_CTRL_OFFSET(x) (x) /* Mode is coded on 1 bit but is different depending on the MAC ID: * MAC0: QSGMII=0 RGMII=1 * MAC1: QSGMII=0 SGMII=0 RGMII=1 * MAC2 & MAC3: QSGMII=0 SGMII=1 */ #define NSS_COMMON_CLK_SRC_CTRL_RGMII(x) 1 #define NSS_COMMON_CLK_SRC_CTRL_SGMII(x) ((x >= 2) ? 1 : 0) #define NSS_COMMON_GMAC_CTL(x) (0x30 + (x * 4)) #define NSS_COMMON_GMAC_CTL_CSYS_REQ BIT(19) #define NSS_COMMON_GMAC_CTL_PHY_IFACE_SEL BIT(16) #define NSS_COMMON_GMAC_CTL_IFG_LIMIT_OFFSET 8 #define NSS_COMMON_GMAC_CTL_IFG_OFFSET 0 #define NSS_COMMON_CLK_DIV_RGMII_1000 1 #define NSS_COMMON_CLK_DIV_RGMII_100 9 #define NSS_COMMON_CLK_DIV_RGMII_10 99 #define NSS_COMMON_CLK_DIV_SGMII_1000 0 #define NSS_COMMON_CLK_DIV_SGMII_100 4 #define NSS_COMMON_CLK_DIV_SGMII_10 49 #define QSGMII_PCS_ALL_CH_CTL 0x80 #define QSGMII_PCS_CH_SPEED_FORCE BIT(1) #define QSGMII_PCS_CH_SPEED_10 0x0 #define QSGMII_PCS_CH_SPEED_100 BIT(2) #define QSGMII_PCS_CH_SPEED_1000 BIT(3) #define QSGMII_PCS_CH_SPEED_MASK (QSGMII_PCS_CH_SPEED_FORCE | \ QSGMII_PCS_CH_SPEED_10 | \ QSGMII_PCS_CH_SPEED_100 | \ QSGMII_PCS_CH_SPEED_1000) #define QSGMII_PCS_CH_SPEED_SHIFT(x) ((x) * 4) #define QSGMII_PCS_CAL_LCKDT_CTL 0x120 #define QSGMII_PCS_CAL_LCKDT_CTL_RST BIT(19) /* Only GMAC1/2/3 support SGMII and their CTL register are not contiguous */ #define QSGMII_PHY_SGMII_CTL(x) ((x == 1) ? 0x134 : \ (0x13c + (4 * (x - 2)))) #define QSGMII_PHY_CDR_EN BIT(0) #define QSGMII_PHY_RX_FRONT_EN BIT(1) #define QSGMII_PHY_RX_SIGNAL_DETECT_EN BIT(2) #define QSGMII_PHY_TX_DRIVER_EN BIT(3) #define QSGMII_PHY_QSGMII_EN BIT(7) #define QSGMII_PHY_DEEMPHASIS_LVL_MASK GENMASK(11, 10) #define QSGMII_PHY_DEEMPHASIS_LVL(x) FIELD_PREP(QSGMII_PHY_DEEMPHASIS_LVL_MASK, (x)) #define QSGMII_PHY_PHASE_LOOP_GAIN_MASK GENMASK(14, 12) #define QSGMII_PHY_PHASE_LOOP_GAIN(x) FIELD_PREP(QSGMII_PHY_PHASE_LOOP_GAIN_MASK, (x)) #define QSGMII_PHY_RX_DC_BIAS_MASK GENMASK(19, 18) #define QSGMII_PHY_RX_DC_BIAS(x) FIELD_PREP(QSGMII_PHY_RX_DC_BIAS_MASK, (x)) #define QSGMII_PHY_RX_INPUT_EQU_MASK GENMASK(21, 20) #define QSGMII_PHY_RX_INPUT_EQU(x) FIELD_PREP(QSGMII_PHY_RX_INPUT_EQU_MASK, (x)) #define QSGMII_PHY_CDR_PI_SLEW_MASK GENMASK(23, 22) #define QSGMII_PHY_CDR_PI_SLEW(x) FIELD_PREP(QSGMII_PHY_CDR_PI_SLEW_MASK, (x)) #define QSGMII_PHY_TX_SLEW_MASK GENMASK(27, 26) #define QSGMII_PHY_TX_SLEW(x) FIELD_PREP(QSGMII_PHY_TX_SLEW_MASK, (x)) #define QSGMII_PHY_TX_DRV_AMP_MASK GENMASK(31, 28) #define QSGMII_PHY_TX_DRV_AMP(x) FIELD_PREP(QSGMII_PHY_TX_DRV_AMP_MASK, (x)) struct ipq806x_gmac { struct platform_device *pdev; struct regmap *nss_common; struct regmap *qsgmii_csr; uint32_t id; struct clk *core_clk; phy_interface_t phy_mode; }; static int get_clk_div_sgmii(struct ipq806x_gmac *gmac, unsigned int speed) { struct device *dev = &gmac->pdev->dev; int div; switch (speed) { case SPEED_1000: div = NSS_COMMON_CLK_DIV_SGMII_1000; break; case SPEED_100: div = NSS_COMMON_CLK_DIV_SGMII_100; break; case SPEED_10: div = NSS_COMMON_CLK_DIV_SGMII_10; break; default: dev_err(dev, "Speed %dMbps not supported in SGMII\n", speed); return -EINVAL; } return div; } static int get_clk_div_rgmii(struct ipq806x_gmac *gmac, unsigned int speed) { struct device *dev = &gmac->pdev->dev; int div; switch (speed) { case SPEED_1000: div = NSS_COMMON_CLK_DIV_RGMII_1000; break; case SPEED_100: div = NSS_COMMON_CLK_DIV_RGMII_100; break; case SPEED_10: div = NSS_COMMON_CLK_DIV_RGMII_10; break; default: dev_err(dev, "Speed %dMbps not supported in RGMII\n", speed); return -EINVAL; } return div; } static int ipq806x_gmac_set_speed(struct ipq806x_gmac *gmac, unsigned int speed) { uint32_t clk_bits, val; int div; switch (gmac->phy_mode) { case PHY_INTERFACE_MODE_RGMII: div = get_clk_div_rgmii(gmac, speed); clk_bits = NSS_COMMON_CLK_GATE_RGMII_RX_EN(gmac->id) | NSS_COMMON_CLK_GATE_RGMII_TX_EN(gmac->id); break; case PHY_INTERFACE_MODE_SGMII: div = get_clk_div_sgmii(gmac, speed); clk_bits = NSS_COMMON_CLK_GATE_GMII_RX_EN(gmac->id) | NSS_COMMON_CLK_GATE_GMII_TX_EN(gmac->id); break; default: dev_err(&gmac->pdev->dev, "Unsupported PHY mode: \"%s\"\n", phy_modes(gmac->phy_mode)); return -EINVAL; } /* Disable the clocks */ regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val); val &= ~clk_bits; regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val); /* Set the divider */ regmap_read(gmac->nss_common, NSS_COMMON_CLK_DIV0, &val); val &= ~(NSS_COMMON_CLK_DIV_MASK << NSS_COMMON_CLK_DIV_OFFSET(gmac->id)); val |= div << NSS_COMMON_CLK_DIV_OFFSET(gmac->id); regmap_write(gmac->nss_common, NSS_COMMON_CLK_DIV0, val); /* Enable the clock back */ regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val); val |= clk_bits; regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val); return 0; } static int ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac) { struct device *dev = &gmac->pdev->dev; int ret; ret = of_get_phy_mode(dev->of_node, &gmac->phy_mode); if (ret) { dev_err(dev, "missing phy mode property\n"); return -EINVAL; } if (of_property_read_u32(dev->of_node, "qcom,id", &gmac->id) < 0) { dev_err(dev, "missing qcom id property\n"); return -EINVAL; } /* The GMACs are called 1 to 4 in the documentation, but to simplify the * code and keep it consistent with the Linux convention, we'll number * them from 0 to 3 here. */ if (gmac->id > 3) { dev_err(dev, "invalid gmac id\n"); return -EINVAL; } gmac->core_clk = devm_clk_get(dev, "stmmaceth"); if (IS_ERR(gmac->core_clk)) { dev_err(dev, "missing stmmaceth clk property\n"); return PTR_ERR(gmac->core_clk); } clk_set_rate(gmac->core_clk, 266000000); /* Setup the register map for the nss common registers */ gmac->nss_common = syscon_regmap_lookup_by_phandle(dev->of_node, "qcom,nss-common"); if (IS_ERR(gmac->nss_common)) { dev_err(dev, "missing nss-common node\n"); return PTR_ERR(gmac->nss_common); } /* Setup the register map for the qsgmii csr registers */ gmac->qsgmii_csr = syscon_regmap_lookup_by_phandle(dev->of_node, "qcom,qsgmii-csr"); if (IS_ERR(gmac->qsgmii_csr)) dev_err(dev, "missing qsgmii-csr node\n"); return PTR_ERR_OR_ZERO(gmac->qsgmii_csr); } static void ipq806x_gmac_fix_mac_speed(void *priv, unsigned int speed) { struct ipq806x_gmac *gmac = priv; ipq806x_gmac_set_speed(gmac, speed); } static int ipq806x_gmac_configure_qsgmii_pcs_speed(struct ipq806x_gmac *gmac) { struct platform_device *pdev = gmac->pdev; struct device *dev = &pdev->dev; struct device_node *dn; int link_speed; int val = 0; int ret; /* Some bootloader may apply wrong configuration and cause * not functioning port. If fixed link is not set, * reset the force speed bit. */ if (!of_phy_is_fixed_link(pdev->dev.of_node)) goto write; dn = of_get_child_by_name(pdev->dev.of_node, "fixed-link"); ret = of_property_read_u32(dn, "speed", &link_speed); of_node_put(dn); if (ret) { dev_err(dev, "found fixed-link node with no speed"); return ret; } val = QSGMII_PCS_CH_SPEED_FORCE; switch (link_speed) { case SPEED_1000: val |= QSGMII_PCS_CH_SPEED_1000; break; case SPEED_100: val |= QSGMII_PCS_CH_SPEED_100; break; case SPEED_10: val |= QSGMII_PCS_CH_SPEED_10; break; } write: regmap_update_bits(gmac->qsgmii_csr, QSGMII_PCS_ALL_CH_CTL, QSGMII_PCS_CH_SPEED_MASK << QSGMII_PCS_CH_SPEED_SHIFT(gmac->id), val << QSGMII_PCS_CH_SPEED_SHIFT(gmac->id)); return 0; } static const struct soc_device_attribute ipq806x_gmac_soc_v1[] = { { .revision = "1.*", }, { /* sentinel */ } }; static int ipq806x_gmac_configure_qsgmii_params(struct ipq806x_gmac *gmac) { struct platform_device *pdev = gmac->pdev; const struct soc_device_attribute *soc; struct device *dev = &pdev->dev; u32 qsgmii_param; switch (gmac->id) { case 1: soc = soc_device_match(ipq806x_gmac_soc_v1); if (soc) qsgmii_param = QSGMII_PHY_TX_DRV_AMP(0xc) | QSGMII_PHY_TX_SLEW(0x2) | QSGMII_PHY_DEEMPHASIS_LVL(0x2); else qsgmii_param = QSGMII_PHY_TX_DRV_AMP(0xd) | QSGMII_PHY_TX_SLEW(0x0) | QSGMII_PHY_DEEMPHASIS_LVL(0x0); qsgmii_param |= QSGMII_PHY_RX_DC_BIAS(0x2); break; case 2: case 3: qsgmii_param = QSGMII_PHY_RX_DC_BIAS(0x3) | QSGMII_PHY_TX_DRV_AMP(0xc); break; default: /* gmac 0 can't be set in SGMII mode */ dev_err(dev, "gmac id %d can't be in SGMII mode", gmac->id); return -EINVAL; } /* Common params across all gmac id */ qsgmii_param |= QSGMII_PHY_CDR_EN | QSGMII_PHY_RX_FRONT_EN | QSGMII_PHY_RX_SIGNAL_DETECT_EN | QSGMII_PHY_TX_DRIVER_EN | QSGMII_PHY_QSGMII_EN | QSGMII_PHY_PHASE_LOOP_GAIN(0x4) | QSGMII_PHY_RX_INPUT_EQU(0x1) | QSGMII_PHY_CDR_PI_SLEW(0x2); regmap_write(gmac->qsgmii_csr, QSGMII_PHY_SGMII_CTL(gmac->id), qsgmii_param); return 0; } static int ipq806x_gmac_probe(struct platform_device *pdev) { struct plat_stmmacenet_data *plat_dat; struct stmmac_resources stmmac_res; struct device *dev = &pdev->dev; struct ipq806x_gmac *gmac; int val; int err; val = stmmac_get_platform_resources(pdev, &stmmac_res); if (val) return val; plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); if (IS_ERR(plat_dat)) return PTR_ERR(plat_dat); gmac = devm_kzalloc(dev, sizeof(*gmac), GFP_KERNEL); if (!gmac) { err = -ENOMEM; goto err_remove_config_dt; } gmac->pdev = pdev; err = ipq806x_gmac_of_parse(gmac); if (err) { dev_err(dev, "device tree parsing error\n"); goto err_remove_config_dt; } regmap_write(gmac->qsgmii_csr, QSGMII_PCS_CAL_LCKDT_CTL, QSGMII_PCS_CAL_LCKDT_CTL_RST); /* Inter frame gap is set to 12 */ val = 12 << NSS_COMMON_GMAC_CTL_IFG_OFFSET | 12 << NSS_COMMON_GMAC_CTL_IFG_LIMIT_OFFSET; /* We also initiate an AXI low power exit request */ val |= NSS_COMMON_GMAC_CTL_CSYS_REQ; switch (gmac->phy_mode) { case PHY_INTERFACE_MODE_RGMII: val |= NSS_COMMON_GMAC_CTL_PHY_IFACE_SEL; break; case PHY_INTERFACE_MODE_SGMII: val &= ~NSS_COMMON_GMAC_CTL_PHY_IFACE_SEL; break; default: goto err_unsupported_phy; } regmap_write(gmac->nss_common, NSS_COMMON_GMAC_CTL(gmac->id), val); /* Configure the clock src according to the mode */ regmap_read(gmac->nss_common, NSS_COMMON_CLK_SRC_CTRL, &val); val &= ~(1 << NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id)); switch (gmac->phy_mode) { case PHY_INTERFACE_MODE_RGMII: val |= NSS_COMMON_CLK_SRC_CTRL_RGMII(gmac->id) << NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id); break; case PHY_INTERFACE_MODE_SGMII: val |= NSS_COMMON_CLK_SRC_CTRL_SGMII(gmac->id) << NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id); break; default: goto err_unsupported_phy; } regmap_write(gmac->nss_common, NSS_COMMON_CLK_SRC_CTRL, val); /* Enable PTP clock */ regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val); val |= NSS_COMMON_CLK_GATE_PTP_EN(gmac->id); switch (gmac->phy_mode) { case PHY_INTERFACE_MODE_RGMII: val |= NSS_COMMON_CLK_GATE_RGMII_RX_EN(gmac->id) | NSS_COMMON_CLK_GATE_RGMII_TX_EN(gmac->id); break; case PHY_INTERFACE_MODE_SGMII: val |= NSS_COMMON_CLK_GATE_GMII_RX_EN(gmac->id) | NSS_COMMON_CLK_GATE_GMII_TX_EN(gmac->id); break; default: goto err_unsupported_phy; } regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val); if (gmac->phy_mode == PHY_INTERFACE_MODE_SGMII) { err = ipq806x_gmac_configure_qsgmii_params(gmac); if (err) goto err_remove_config_dt; err = ipq806x_gmac_configure_qsgmii_pcs_speed(gmac); if (err) goto err_remove_config_dt; } plat_dat->has_gmac = true; plat_dat->bsp_priv = gmac; plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed; plat_dat->multicast_filter_bins = 0; plat_dat->tx_fifo_size = 8192; plat_dat->rx_fifo_size = 8192; err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); if (err) goto err_remove_config_dt; return 0; err_unsupported_phy: dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n", phy_modes(gmac->phy_mode)); err = -EINVAL; err_remove_config_dt: stmmac_remove_config_dt(pdev, plat_dat); return err; } static const struct of_device_id ipq806x_gmac_dwmac_match[] = { { .compatible = "qcom,ipq806x-gmac" }, { } }; MODULE_DEVICE_TABLE(of, ipq806x_gmac_dwmac_match); static struct platform_driver ipq806x_gmac_dwmac_driver = { .probe = ipq806x_gmac_probe, .remove = stmmac_pltfr_remove, .driver = { .name = "ipq806x-gmac-dwmac", .pm = &stmmac_pltfr_pm_ops, .of_match_table = ipq806x_gmac_dwmac_match, }, }; module_platform_driver(ipq806x_gmac_dwmac_driver); MODULE_AUTHOR("Mathieu Olivari <mathieu@codeaurora.org>"); MODULE_DESCRIPTION("Qualcomm Atheros IPQ806x DWMAC specific glue layer"); MODULE_LICENSE("Dual BSD/GPL");
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