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Release 4.11 drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c

/*
 * Synopsys DWC Ethernet Quality-of-Service v4.10a linux driver
 *
 * Copyright (C) 2016 Joao Pinto <jpinto@synopsys.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/ethtool.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/of_net.h>
#include <linux/mfd/syscon.h>
#include <linux/platform_device.h>
#include <linux/stmmac.h>

#include "stmmac_platform.h"


static int dwc_eth_dwmac_config_dt(struct platform_device *pdev, struct plat_stmmacenet_data *plat_dat) { struct device_node *np = pdev->dev.of_node; u32 burst_map = 0; u32 bit_index = 0; u32 a_index = 0; if (!plat_dat->axi) { plat_dat->axi = kzalloc(sizeof(struct stmmac_axi), GFP_KERNEL); if (!plat_dat->axi) return -ENOMEM; } plat_dat->axi->axi_lpi_en = of_property_read_bool(np, "snps,en-lpi"); if (of_property_read_u32(np, "snps,write-requests", &plat_dat->axi->axi_wr_osr_lmt)) { /** * Since the register has a reset value of 1, if property * is missing, default to 1. */ plat_dat->axi->axi_wr_osr_lmt = 1; } else { /** * If property exists, to keep the behavior from dwc_eth_qos, * subtract one after parsing. */ plat_dat->axi->axi_wr_osr_lmt--; } if (of_property_read_u32(np, "read,read-requests", &plat_dat->axi->axi_rd_osr_lmt)) { /** * Since the register has a reset value of 1, if property * is missing, default to 1. */ plat_dat->axi->axi_rd_osr_lmt = 1; } else { /** * If property exists, to keep the behavior from dwc_eth_qos, * subtract one after parsing. */ plat_dat->axi->axi_rd_osr_lmt--; } of_property_read_u32(np, "snps,burst-map", &burst_map); /* converts burst-map bitmask to burst array */ for (bit_index = 0; bit_index < 7; bit_index++) { if (burst_map & (1 << bit_index)) { switch (bit_index) { case 0: plat_dat->axi->axi_blen[a_index] = 4; break; case 1: plat_dat->axi->axi_blen[a_index] = 8; break; case 2: plat_dat->axi->axi_blen[a_index] = 16; break; case 3: plat_dat->axi->axi_blen[a_index] = 32; break; case 4: plat_dat->axi->axi_blen[a_index] = 64; break; case 5: plat_dat->axi->axi_blen[a_index] = 128; break; case 6: plat_dat->axi->axi_blen[a_index] = 256; break; default: break; } a_index++; } } /* dwc-qos needs GMAC4, AAL, TSO and PMT */ plat_dat->has_gmac4 = 1; plat_dat->dma_cfg->aal = 1; plat_dat->tso_en = 1; plat_dat->pmt = 1; return 0; }

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Joao Pinto350100.00%1100.00%
Total350100.00%1100.00%


static int dwc_eth_dwmac_probe(struct platform_device *pdev) { struct plat_stmmacenet_data *plat_dat; struct stmmac_resources stmmac_res; struct resource *res; int ret; memset(&stmmac_res, 0, sizeof(struct stmmac_resources)); /** * Since stmmac_platform supports name IRQ only, basic platform * resource initialization is done in the glue logic. */ stmmac_res.irq = platform_get_irq(pdev, 0); if (stmmac_res.irq < 0) { if (stmmac_res.irq != -EPROBE_DEFER) dev_err(&pdev->dev, "IRQ configuration information not found\n"); return stmmac_res.irq; } stmmac_res.wol_irq = stmmac_res.irq; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); stmmac_res.addr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(stmmac_res.addr)) return PTR_ERR(stmmac_res.addr); plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); if (IS_ERR(plat_dat)) return PTR_ERR(plat_dat); plat_dat->stmmac_clk = devm_clk_get(&pdev->dev, "apb_pclk"); if (IS_ERR(plat_dat->stmmac_clk)) { dev_err(&pdev->dev, "apb_pclk clock not found.\n"); ret = PTR_ERR(plat_dat->stmmac_clk); plat_dat->stmmac_clk = NULL; goto err_remove_config_dt; } clk_prepare_enable(plat_dat->stmmac_clk); plat_dat->pclk = devm_clk_get(&pdev->dev, "phy_ref_clk"); if (IS_ERR(plat_dat->pclk)) { dev_err(&pdev->dev, "phy_ref_clk clock not found.\n"); ret = PTR_ERR(plat_dat->pclk); plat_dat->pclk = NULL; goto err_out_clk_dis_phy; } clk_prepare_enable(plat_dat->pclk); ret = dwc_eth_dwmac_config_dt(pdev, plat_dat); if (ret) goto err_out_clk_dis_aper; ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); if (ret) goto err_out_clk_dis_aper; return 0; err_out_clk_dis_aper: clk_disable_unprepare(plat_dat->pclk); err_out_clk_dis_phy: clk_disable_unprepare(plat_dat->stmmac_clk); err_remove_config_dt: stmmac_remove_config_dt(pdev, plat_dat); return ret; }

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Joao Pinto354100.00%1100.00%
Total354100.00%1100.00%


static int dwc_eth_dwmac_remove(struct platform_device *pdev) { return stmmac_pltfr_remove(pdev); }

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Joao Pinto17100.00%1100.00%
Total17100.00%1100.00%

static const struct of_device_id dwc_eth_dwmac_match[] = { { .compatible = "snps,dwc-qos-ethernet-4.10", }, { } }; MODULE_DEVICE_TABLE(of, dwc_eth_dwmac_match); static struct platform_driver dwc_eth_dwmac_driver = { .probe = dwc_eth_dwmac_probe, .remove = dwc_eth_dwmac_remove, .driver = { .name = "dwc-eth-dwmac", .of_match_table = dwc_eth_dwmac_match, }, }; module_platform_driver(dwc_eth_dwmac_driver); MODULE_AUTHOR("Joao Pinto <jpinto@synopsys.com>"); MODULE_DESCRIPTION("Synopsys DWC Ethernet Quality-of-Service v4.10a driver"); MODULE_LICENSE("GPL v2");

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PersonTokensPropCommitsCommitProp
Joao Pinto835100.00%1100.00%
Total835100.00%1100.00%
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