314 lines
7.7 KiB
C
314 lines
7.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*******************************************************************************
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This contains the functions to handle the pci driver.
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Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd
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Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>
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Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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*******************************************************************************/
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#include <linux/clk-provider.h>
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#include <linux/pci.h>
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#include <linux/dmi.h>
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#include "stmmac.h"
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struct stmmac_pci_info {
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int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat);
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};
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static void common_default_data(struct plat_stmmacenet_data *plat)
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{
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plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
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plat->has_gmac = 1;
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plat->force_sf_dma_mode = 1;
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plat->mdio_bus_data->needs_reset = true;
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/* Set default value for multicast hash bins */
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plat->multicast_filter_bins = HASH_TABLE_SIZE;
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/* Set default value for unicast filter entries */
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plat->unicast_filter_entries = 1;
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/* Set the maxmtu to a default of JUMBO_LEN */
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plat->maxmtu = JUMBO_LEN;
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/* Set default number of RX and TX queues to use */
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plat->tx_queues_to_use = 1;
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plat->rx_queues_to_use = 1;
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/* Disable Priority config by default */
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plat->tx_queues_cfg[0].use_prio = false;
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plat->rx_queues_cfg[0].use_prio = false;
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/* Disable RX queues routing by default */
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plat->rx_queues_cfg[0].pkt_route = 0x0;
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}
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static int stmmac_default_data(struct pci_dev *pdev,
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struct plat_stmmacenet_data *plat)
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{
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/* Set common default data first */
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common_default_data(plat);
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plat->bus_id = 1;
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plat->phy_addr = 0;
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plat->phy_interface = PHY_INTERFACE_MODE_GMII;
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plat->dma_cfg->pbl = 32;
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plat->dma_cfg->pblx8 = true;
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/* TODO: AXI */
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return 0;
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}
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static const struct stmmac_pci_info stmmac_pci_info = {
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.setup = stmmac_default_data,
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};
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static int snps_gmac5_default_data(struct pci_dev *pdev,
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struct plat_stmmacenet_data *plat)
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{
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int i;
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plat->clk_csr = 5;
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plat->has_gmac4 = 1;
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plat->force_sf_dma_mode = 1;
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plat->tso_en = 1;
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plat->pmt = 1;
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/* Set default value for multicast hash bins */
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plat->multicast_filter_bins = HASH_TABLE_SIZE;
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/* Set default value for unicast filter entries */
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plat->unicast_filter_entries = 1;
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/* Set the maxmtu to a default of JUMBO_LEN */
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plat->maxmtu = JUMBO_LEN;
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/* Set default number of RX and TX queues to use */
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plat->tx_queues_to_use = 4;
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plat->rx_queues_to_use = 4;
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plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR;
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for (i = 0; i < plat->tx_queues_to_use; i++) {
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plat->tx_queues_cfg[i].use_prio = false;
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plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
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plat->tx_queues_cfg[i].weight = 25;
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if (i > 0)
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plat->tx_queues_cfg[i].tbs_en = 1;
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}
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plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP;
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for (i = 0; i < plat->rx_queues_to_use; i++) {
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plat->rx_queues_cfg[i].use_prio = false;
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plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
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plat->rx_queues_cfg[i].pkt_route = 0x0;
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plat->rx_queues_cfg[i].chan = i;
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}
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plat->bus_id = 1;
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plat->phy_addr = -1;
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plat->phy_interface = PHY_INTERFACE_MODE_GMII;
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plat->dma_cfg->pbl = 32;
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plat->dma_cfg->pblx8 = true;
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/* Axi Configuration */
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plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi), GFP_KERNEL);
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if (!plat->axi)
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return -ENOMEM;
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plat->axi->axi_wr_osr_lmt = 31;
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plat->axi->axi_rd_osr_lmt = 31;
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plat->axi->axi_fb = false;
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plat->axi->axi_blen[0] = 4;
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plat->axi->axi_blen[1] = 8;
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plat->axi->axi_blen[2] = 16;
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plat->axi->axi_blen[3] = 32;
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return 0;
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}
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static const struct stmmac_pci_info snps_gmac5_pci_info = {
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.setup = snps_gmac5_default_data,
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};
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/**
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* stmmac_pci_probe
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*
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* @pdev: pci device pointer
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* @id: pointer to table of device id/id's.
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*
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* Description: This probing function gets called for all PCI devices which
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* match the ID table and are not "owned" by other driver yet. This function
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* gets passed a "struct pci_dev *" for each device whose entry in the ID table
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* matches the device. The probe functions returns zero when the driver choose
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* to take "ownership" of the device or an error code(-ve no) otherwise.
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*/
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static int stmmac_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;
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struct plat_stmmacenet_data *plat;
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struct stmmac_resources res;
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int i;
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int ret;
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plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
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if (!plat)
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return -ENOMEM;
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plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
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sizeof(*plat->mdio_bus_data),
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GFP_KERNEL);
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if (!plat->mdio_bus_data)
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return -ENOMEM;
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plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
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GFP_KERNEL);
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if (!plat->dma_cfg)
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return -ENOMEM;
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plat->safety_feat_cfg = devm_kzalloc(&pdev->dev,
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sizeof(*plat->safety_feat_cfg),
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GFP_KERNEL);
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if (!plat->safety_feat_cfg)
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return -ENOMEM;
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/* Enable pci device */
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ret = pcim_enable_device(pdev);
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if (ret) {
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dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
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__func__);
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return ret;
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}
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/* Get the base address of device */
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for (i = 0; i < PCI_STD_NUM_BARS; i++) {
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if (pci_resource_len(pdev, i) == 0)
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continue;
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ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));
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if (ret)
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return ret;
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break;
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}
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pci_set_master(pdev);
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ret = info->setup(pdev, plat);
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if (ret)
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return ret;
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memset(&res, 0, sizeof(res));
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res.addr = pcim_iomap_table(pdev)[i];
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res.wol_irq = pdev->irq;
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res.irq = pdev->irq;
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plat->safety_feat_cfg->tsoee = 1;
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plat->safety_feat_cfg->mrxpee = 1;
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plat->safety_feat_cfg->mestee = 1;
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plat->safety_feat_cfg->mrxee = 1;
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plat->safety_feat_cfg->mtxee = 1;
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plat->safety_feat_cfg->epsi = 1;
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plat->safety_feat_cfg->edpp = 1;
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plat->safety_feat_cfg->prtyen = 1;
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plat->safety_feat_cfg->tmouten = 1;
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return stmmac_dvr_probe(&pdev->dev, plat, &res);
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}
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/**
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* stmmac_pci_remove
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*
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* @pdev: platform device pointer
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* Description: this function calls the main to free the net resources
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* and releases the PCI resources.
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*/
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static void stmmac_pci_remove(struct pci_dev *pdev)
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{
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int i;
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stmmac_dvr_remove(&pdev->dev);
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for (i = 0; i < PCI_STD_NUM_BARS; i++) {
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if (pci_resource_len(pdev, i) == 0)
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continue;
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pcim_iounmap_regions(pdev, BIT(i));
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break;
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}
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}
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static int __maybe_unused stmmac_pci_suspend(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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int ret;
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ret = stmmac_suspend(dev);
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if (ret)
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return ret;
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ret = pci_save_state(pdev);
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if (ret)
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return ret;
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pci_disable_device(pdev);
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pci_wake_from_d3(pdev, true);
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return 0;
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}
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static int __maybe_unused stmmac_pci_resume(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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int ret;
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pci_restore_state(pdev);
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pci_set_power_state(pdev, PCI_D0);
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ret = pci_enable_device(pdev);
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if (ret)
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return ret;
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pci_set_master(pdev);
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return stmmac_resume(dev);
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}
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static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
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/* synthetic ID, no official vendor */
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#define PCI_VENDOR_ID_STMMAC 0x0700
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#define PCI_DEVICE_ID_STMMAC_STMMAC 0x1108
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#define PCI_DEVICE_ID_SYNOPSYS_GMAC5_ID 0x7102
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static const struct pci_device_id stmmac_id_table[] = {
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{ PCI_DEVICE_DATA(STMMAC, STMMAC, &stmmac_pci_info) },
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{ PCI_DEVICE_DATA(STMICRO, MAC, &stmmac_pci_info) },
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{ PCI_DEVICE_DATA(SYNOPSYS, GMAC5_ID, &snps_gmac5_pci_info) },
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{}
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};
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MODULE_DEVICE_TABLE(pci, stmmac_id_table);
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static struct pci_driver stmmac_pci_driver = {
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.name = STMMAC_RESOURCE_NAME,
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.id_table = stmmac_id_table,
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.probe = stmmac_pci_probe,
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.remove = stmmac_pci_remove,
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.driver = {
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.pm = &stmmac_pm_ops,
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},
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};
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module_pci_driver(stmmac_pci_driver);
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MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
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MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
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MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
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MODULE_LICENSE("GPL");
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