[net-next v4 4/5] net: stmmac: Add PCI driver support for BCM8958x

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Hi,



This SoC device has PCIe ethernet MAC directly attached to an integrated
ethernet switch using XGMII interface. Since device tree support is not
available on this platform, a software node is created to enable
fixed-link support using phylink driver.

Signed-off-by: Jitendra Vegiraju <jitendra.vegiraju@xxxxxxxxxxxx>
---
   .../net/ethernet/stmicro/stmmac/dwmac-brcm.c  | 530 ++++++++++++++++++
   1 file changed, 530 insertions(+)
   create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c
new file mode 100644
index 000000000000..4384f45e86b1
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c
@@ -0,0 +1,530 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2024 Broadcom Corporation
+ *
+ * PCI driver for ethernet interface of BCM8958X automotive switch chip.
+ *
+ * High level block diagram of the device.
+ *              +=================================+
+ *              |       Host CPU/Linux            |
+ *              +=================================+
+ *                         || PCIe
+ *                         ||
+ *         +==========================================+
+ *         |           +--------------+               |
+ *         |           | PCIE Endpoint|               |
+ *         |           | Ethernet     |               |
+ *         |           | Controller   |               |
+ *         |           |   DMA        |               |
+ *         |           +--------------+               |
+ *         |           |   MAC        |   BCM8958X    |
+ *         |           +--------------+   SoC         |
+ *         |               || XGMII                   |
+ *         |               ||                         |
+ *         |           +--------------+               |
+ *         |           | Ethernet     |               |
+ *         |           | switch       |               |
+ *         |           +--------------+               |
+ *         |             || || || ||                  |
+ *         +==========================================+
+ *                       || || || || More external interfaces
+ *
+ * This SoC device has PCIe ethernet MAC directly attached to an integrated
+ * ethernet switch using XGMII interface. Since devicetree support is not
+ * available on this platform, a software node is created to enable
+ * fixed-link support using phylink driver.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/dmi.h>
+#include <linux/pci.h>
+#include <linux/phy.h>
+
+#include "stmmac.h"
+#include "dwxgmac2.h"
+
+#define PCI_DEVICE_ID_BROADCOM_BCM8958X		0xa00d
+#define BRCM_MAX_MTU				1500
+#define READ_POLL_DELAY_US			100
+#define READ_POLL_TIMEOUT_US			10000
+#define DWMAC_125MHZ				125000000
+#define DWMAC_250MHZ				250000000
+#define BRCM_XGMAC_NUM_VLAN_FILTERS		32
+
+/* TX and RX Queue counts */
+#define BRCM_TX_Q_COUNT				4
+#define BRCM_RX_Q_COUNT				4
+
+#define BRCM_XGMAC_DMA_TX_SIZE			1024
+#define BRCM_XGMAC_DMA_RX_SIZE			1024
+#define BRCM_XGMAC_BAR0_MASK			BIT(0)
+
+#define BRCM_XGMAC_IOMEM_MISC_REG_OFFSET	0x0
+#define BRCM_XGMAC_IOMEM_MBOX_REG_OFFSET	0x1000
+#define BRCM_XGMAC_IOMEM_CFG_REG_OFFSET		0x3000
+
+#define XGMAC_MMC_CTRL_RCHM_DISABLE		BIT(31)
+#define XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_LOW	0x940
+#define XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_LO_VALUE	0x00000001
+#define XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_HIGH	0x944
+#define XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_HI_VALUE	0x88000000
+
+#define XGMAC_PCIE_MISC_MII_CTRL_OFFSET			0x4
+#define XGMAC_PCIE_MISC_MII_CTRL_PAUSE_RX		BIT(0)
+#define XGMAC_PCIE_MISC_MII_CTRL_PAUSE_TX		BIT(1)
+#define XGMAC_PCIE_MISC_MII_CTRL_LINK_UP		BIT(2)
+#define XGMAC_PCIE_MISC_PCIESS_CTRL_OFFSET		0x8
+#define XGMAC_PCIE_MISC_PCIESS_CTRL_EN_MSI_MSIX		BIT(9)
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_LO_OFFSET	0x90
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_LO_VALUE	0x00000001
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI_OFFSET	0x94
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI_VALUE	0x88000000
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0_OFFSET	0x700
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0_VALUE	1
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1_OFFSET	0x704
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1_VALUE	1
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL_OFFSET	0x728
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL_VALUE	1
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL_OFFSET	0x740
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL_VALUE	0
+
+#define XGMAC_PCIE_MISC_FUNC_RESOURCES_PF0_OFFSET	0x804
+
+/* MSIX Vector map register starting offsets */
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_RX0_PF0_OFFSET	0x840
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_TX0_PF0_OFFSET	0x890
+#define BRCM_MAX_DMA_CHANNEL_PAIRS		4
+
+#define BRCM_XGMAC_MSI_MAC_VECTOR		0
+#define BRCM_XGMAC_MSI_RX_VECTOR_START		9
+#define BRCM_XGMAC_MSI_TX_VECTOR_START		10
+
+static char *fixed_link_node_name = "fixed-link";
+
+static const struct property_entry fixed_link_properties[] = {
+	PROPERTY_ENTRY_U32("speed", 10000),
+	PROPERTY_ENTRY_BOOL("full-duplex"),
+	PROPERTY_ENTRY_BOOL("pause"),
+	{ }
+};
+
+struct brcm_priv_data {
+	void __iomem *mbox_regs;    /* MBOX  Registers*/
+	void __iomem *misc_regs;    /* MISC  Registers*/
+	void __iomem *xgmac_regs;   /* XGMAC Registers*/
+	struct software_node fixed_link_node;
+};
+
+struct dwxgmac_brcm_pci_info {
+	int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat);
+};
+
+static void misc_iowrite(struct brcm_priv_data *brcm_priv,
+			 u32 reg, u32 val)
+{
+	iowrite32(val, brcm_priv->misc_regs + reg);
+}
+
+static struct mac_device_info *dwxgmac_brcm_setup(void *ppriv)
+{
+	struct stmmac_priv *priv = ppriv;
+	struct mac_device_info *mac;
+
+	mac = devm_kzalloc(priv->device, sizeof(*mac), GFP_KERNEL);
+	if (!mac)
+		return NULL;
+	/** Update both Synopsys ID and DEVID **/
+	priv->synopsys_id = DW25GMAC_CORE_4_00;
+	priv->synopsys_dev_id = DW25GMAC_ID;
+	priv->dma_conf.dma_tx_size = BRCM_XGMAC_DMA_TX_SIZE;
+	priv->dma_conf.dma_rx_size = BRCM_XGMAC_DMA_RX_SIZE;
+	priv->plat->rss_en = 1;
+	mac->pcsr = priv->ioaddr;
+	priv->dev->priv_flags |= IFF_UNICAST_FLT;
+	mac->multicast_filter_bins = priv->plat->multicast_filter_bins;
+	mac->unicast_filter_entries = priv->plat->unicast_filter_entries;
+	mac->mcast_bits_log2 = 0;
+
+	if (mac->multicast_filter_bins)
+		mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins);
+
+	mac->link.duplex = DUPLEX_FULL;
+	mac->link.caps = (MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_10000FD);
+	mac->link.xgmii.speed10000 = XGMAC_CONFIG_SS_10000;
+	mac->link.speed_mask = XGMAC_CONFIG_SS_MASK;
+
+	return mac;
+}
+
+static void dwxgmac_brcm_common_default_data(struct plat_stmmacenet_data *plat)
+{
+	int i;
+
+	plat->has_xgmac = 1;
+	plat->force_sf_dma_mode = 1;
+	plat->mac_port_sel_speed = SPEED_10000;
+	plat->clk_ptp_rate = DWMAC_125MHZ;
+	plat->clk_ref_rate = DWMAC_250MHZ;
+	plat->setup = dwxgmac_brcm_setup;
+	plat->tx_coe = 1;
+	plat->rx_coe = 1;
+	plat->max_speed = SPEED_10000;
+
+	/* Set default value for multicast hash bins */
+	plat->multicast_filter_bins = HASH_TABLE_SIZE;
+
+	/* Set default value for unicast filter entries */
+	plat->unicast_filter_entries = 1;
+
+	/* Set the maxmtu to device's default */
+	plat->maxmtu = BRCM_MAX_MTU;
+
+	/* Set default number of RX and TX queues to use */
+	plat->tx_queues_to_use = BRCM_TX_Q_COUNT;
+	plat->rx_queues_to_use = BRCM_RX_Q_COUNT;
+
+	plat->tx_sched_algorithm = MTL_TX_ALGORITHM_SP;
+	for (i = 0; i < plat->tx_queues_to_use; i++) {
+		plat->tx_queues_cfg[i].use_prio = false;
+		plat->tx_queues_cfg[i].prio = 0;
+		plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_AVB;
+		plat->dma_cfg->hdma_cfg->tvdma_tc[i] = i;
+		plat->dma_cfg->hdma_cfg->tpdma_tc[i] = i;
+	}
+
+	plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP;
+	for (i = 0; i < plat->rx_queues_to_use; i++) {
+		plat->rx_queues_cfg[i].use_prio = false;
+		plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_AVB;
+		plat->rx_queues_cfg[i].pkt_route = 0x0;
+		plat->rx_queues_cfg[i].chan = i;
+		plat->dma_cfg->hdma_cfg->rvdma_tc[i] = i;
+		plat->dma_cfg->hdma_cfg->rpdma_tc[i] = i;
+	}
+}
+
+static int dwxgmac_brcm_default_data(struct pci_dev *pdev,
+				     struct plat_stmmacenet_data *plat)
+{
+	/* Set common default data first */
+	dwxgmac_brcm_common_default_data(plat);
+
+	plat->bus_id = 0;
+	plat->phy_addr = 0;
+	plat->phy_interface = PHY_INTERFACE_MODE_USXGMII;
+
+	plat->dma_cfg->pbl = 32;
+	plat->dma_cfg->pblx8 = 0;
+	plat->dma_cfg->aal = 0;
+	plat->dma_cfg->eame = 1;
+
+	plat->axi->axi_wr_osr_lmt = 31;
+	plat->axi->axi_rd_osr_lmt = 31;
+	plat->axi->axi_fb = 0;
+	plat->axi->axi_blen[0] = 4;
+	plat->axi->axi_blen[1] = 8;
+	plat->axi->axi_blen[2] = 16;
+	plat->axi->axi_blen[3] = 32;
+	plat->axi->axi_blen[4] = 64;
+	plat->axi->axi_blen[5] = 128;
+	plat->axi->axi_blen[6] = 256;
+
+	plat->msi_mac_vec = BRCM_XGMAC_MSI_MAC_VECTOR;
+	plat->msi_rx_base_vec = BRCM_XGMAC_MSI_RX_VECTOR_START;
+	plat->msi_tx_base_vec = BRCM_XGMAC_MSI_TX_VECTOR_START;
+
+	return 0;
+}
+
+static struct dwxgmac_brcm_pci_info dwxgmac_brcm_pci_info = {
+	.setup = dwxgmac_brcm_default_data,
+};
+
+static int brcm_config_multi_msi(struct pci_dev *pdev,
+				 struct plat_stmmacenet_data *plat,
+				 struct stmmac_resources *res)
+{
+	int ret;
+	int i;
nit: This can be merged into single line.
+
+	if (plat->msi_rx_base_vec >= STMMAC_MSI_VEC_MAX ||
+	    plat->msi_tx_base_vec >= STMMAC_MSI_VEC_MAX) {
+		dev_err(&pdev->dev, "%s: Invalid RX & TX vector defined\n",
+			__func__);
+		return -EINVAL;
+	}
+
+	ret = pci_alloc_irq_vectors(pdev, 2, STMMAC_MSI_VEC_MAX,
+				    PCI_IRQ_MSI | PCI_IRQ_MSIX);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "%s: multi MSI enablement failed\n",
+			__func__);
+		return ret;
+	}
+
+	/* For RX MSI */
+	for (i = 0; i < plat->rx_queues_to_use; i++)
+		res->rx_irq[i] = pci_irq_vector(pdev,
+						plat->msi_rx_base_vec + i * 2);
+
+	/* For TX MSI */
+	for (i = 0; i < plat->tx_queues_to_use; i++)
+		res->tx_irq[i] = pci_irq_vector(pdev,
+						plat->msi_tx_base_vec + i * 2);
+
+	if (plat->msi_mac_vec < STMMAC_MSI_VEC_MAX)
+		res->irq = pci_irq_vector(pdev, plat->msi_mac_vec);
+
+	plat->flags |= STMMAC_FLAG_MULTI_MSI_EN;
+	plat->flags |= STMMAC_FLAG_TSO_EN;
+
+	return 0;
+}
+
+static int dwxgmac_brcm_pci_probe(struct pci_dev *pdev,
+				  const struct pci_device_id *id)
+{
+	struct dwxgmac_brcm_pci_info *info =
+		(struct dwxgmac_brcm_pci_info *)id->driver_data;
+	struct plat_stmmacenet_data *plat;
+	struct brcm_priv_data *brcm_priv;
+	struct stmmac_resources res;
+	struct device *dev;
+	int rx_offset;
+	int tx_offset;
+	int vector;
+	int ret;
+
+	dev = &pdev->dev;
+
+	brcm_priv = devm_kzalloc(&pdev->dev, sizeof(*brcm_priv), GFP_KERNEL);
+	if (!brcm_priv)
+		return -ENOMEM;
+
+	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+	if (!plat)
+		return -ENOMEM;
+
+	plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
+				     GFP_KERNEL);
+	if (!plat->dma_cfg)
+		return -ENOMEM;
+
+	plat->dma_cfg->hdma_cfg = devm_kzalloc(&pdev->dev,
+					       sizeof(*plat->dma_cfg->hdma_cfg),
+					       GFP_KERNEL);
+	if (!plat->dma_cfg->hdma_cfg)
+		return -ENOMEM;
+
+	plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi), GFP_KERNEL);
+	if (!plat->axi)
+		return -ENOMEM;
+
+	/* This device is directly attached to the switch chip internal to the
+	 * SoC using XGMII interface. Since no MDIO is present, register
+	 * fixed-link software_node to create phylink.
+	 */
+	plat->port_node = fwnode_create_software_node(NULL, NULL);
+	brcm_priv->fixed_link_node.name = fixed_link_node_name;
+	brcm_priv->fixed_link_node.properties = fixed_link_properties;
+	brcm_priv->fixed_link_node.parent = to_software_node(plat->port_node);
+	device_add_software_node(dev, &brcm_priv->fixed_link_node);
+
+	/* Disable D3COLD as our device does not support it */
+	pci_d3cold_disable(pdev);
+
+	/* Enable PCI device */
+	ret = pcim_enable_device(pdev);
+	if (ret) {
+		dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
+			__func__);
+		return ret;
+	}
+
+	/* Get the base address of device */
+	ret = pcim_iomap_regions(pdev, BRCM_XGMAC_BAR0_MASK, pci_name(pdev));
+	if (ret)
+		goto err_disable_device;
+	pci_set_master(pdev);
+
+	memset(&res, 0, sizeof(res));
+	res.addr = pcim_iomap_table(pdev)[0];
+	/* MISC Regs */
+	brcm_priv->misc_regs = res.addr + BRCM_XGMAC_IOMEM_MISC_REG_OFFSET;
+	/* MBOX Regs */
+	brcm_priv->mbox_regs = res.addr + BRCM_XGMAC_IOMEM_MBOX_REG_OFFSET;
+	/* XGMAC config Regs */
+	res.addr += BRCM_XGMAC_IOMEM_CFG_REG_OFFSET;
+	brcm_priv->xgmac_regs = res.addr;
+
+	plat->bsp_priv = brcm_priv;
+
+	/* Initialize all MSI vectors to invalid so that it can be set
+	 * according to platform data settings below.
+	 * Note: MSI vector takes value from 0 up to 31 (STMMAC_MSI_VEC_MAX)
+	 */
+	plat->msi_mac_vec = STMMAC_MSI_VEC_MAX;
+	plat->msi_wol_vec = STMMAC_MSI_VEC_MAX;
+	plat->msi_lpi_vec = STMMAC_MSI_VEC_MAX;
+	plat->msi_sfty_ce_vec = STMMAC_MSI_VEC_MAX;
+	plat->msi_sfty_ue_vec = STMMAC_MSI_VEC_MAX;
+	plat->msi_rx_base_vec = STMMAC_MSI_VEC_MAX;
+	plat->msi_tx_base_vec = STMMAC_MSI_VEC_MAX;
+
+	ret = info->setup(pdev, plat);
+	if (ret)
+		goto err_disable_device;
+
+	pci_write_config_dword(pdev, XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_LOW,
+			       XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_LO_VALUE);
+	pci_write_config_dword(pdev, XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_HIGH,
+			       XGMAC_PCIE_CFG_MSIX_ADDR_MATCH_HI_VALUE);
+
+	misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_LO_OFFSET,
+		     XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_LO_VALUE);
+	misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI_OFFSET,
+		     XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI_VALUE);
+
+	/* SBD Interrupt */
+	misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL_OFFSET,
+		     XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL_VALUE);
+	/* EP_DOORBELL Interrupt */
+	misc_iowrite(brcm_priv,
+		     XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL_OFFSET,
+		     XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL_VALUE);
+	/* EP_H0 Interrupt */
+	misc_iowrite(brcm_priv,
+		     XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0_OFFSET,
+		     XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0_VALUE);
+	/* EP_H1 Interrupt */
+	misc_iowrite(brcm_priv,
+		     XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1_OFFSET,
+		     XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1_VALUE);
+
+	rx_offset = XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_RX0_PF0_OFFSET;
+	tx_offset = XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_TX0_PF0_OFFSET;
+	vector = BRCM_XGMAC_MSI_RX_VECTOR_START;
+	for (int i = 0; i < BRCM_MAX_DMA_CHANNEL_PAIRS; i++) {
+		/* RX Interrupt */
+		misc_iowrite(brcm_priv, rx_offset, vector++);
+		/* TX Interrupt */
+		misc_iowrite(brcm_priv, tx_offset, vector++);
+		rx_offset += 4;
+		tx_offset += 4;
+	}
+
+	/* Enable Switch Link */
+	misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MII_CTRL_OFFSET,
+		     XGMAC_PCIE_MISC_MII_CTRL_PAUSE_RX |
+		     XGMAC_PCIE_MISC_MII_CTRL_PAUSE_TX |
+		     XGMAC_PCIE_MISC_MII_CTRL_LINK_UP);
+	/* Enable MSI-X */
+	misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_PCIESS_CTRL_OFFSET,
+		     XGMAC_PCIE_MISC_PCIESS_CTRL_EN_MSI_MSIX);
+
+	ret = brcm_config_multi_msi(pdev, plat, &res);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"%s: ERROR: failed to enable IRQ\n", __func__);
+		goto err_disable_msi;
+	}
+
+	ret = stmmac_dvr_probe(&pdev->dev, plat, &res);
+	if (ret)
+		goto err_disable_msi;
+
+	return ret;
+
+err_disable_msi:
+	pci_free_irq_vectors(pdev);
+err_disable_device:
+	pci_disable_device(pdev);
Shouldn't pcim_iounmap_region be called here to unmap and release PCI BARs?
+
+	return ret;
+}
+
+static void dwxgmac_brcm_software_node_remove(struct pci_dev *pdev)
+{
+	struct fwnode_handle *fwnode;
+	struct stmmac_priv *priv;
+	struct net_device *ndev;
+	struct device *dev;
+
+	dev = &pdev->dev;
+	ndev = dev_get_drvdata(dev);
+	priv = netdev_priv(ndev);
+	fwnode = priv->plat->port_node;
+
+	fwnode_remove_software_node(fwnode);
+	device_remove_software_node(dev);
+}
+
+static void dwxgmac_brcm_pci_remove(struct pci_dev *pdev)
+{
+	stmmac_dvr_remove(&pdev->dev);
+	pci_free_irq_vectors(pdev);
+	pcim_iounmap_regions(pdev, BRCM_XGMAC_BAR0_MASK);
+	pci_clear_master(pdev);
+	dwxgmac_brcm_software_node_remove(pdev);
+}
+
+static int __maybe_unused dwxgmac_brcm_pci_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	int ret;
+
+	ret = stmmac_suspend(dev);
+	if (ret)
+		return ret;
+
+	ret = pci_save_state(pdev);
+	if (ret)
+		return ret;
+
+	pci_disable_device(pdev);
+	pci_wake_from_d3(pdev, true);
+
+	return 0;
+}
+
+static int __maybe_unused dwxgmac_brcm_pci_resume(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	int ret;
+
+	pci_restore_state(pdev);
+	pci_set_power_state(pdev, PCI_D0);
+
+	ret = pci_enable_device(pdev);
+	if (ret)
+		return ret;
+
+	pci_set_master(pdev);
+
+	return stmmac_resume(dev);
+}
+
+static SIMPLE_DEV_PM_OPS(dwxgmac_brcm_pm_ops,
+			 dwxgmac_brcm_pci_suspend,
+			 dwxgmac_brcm_pci_resume);
+
+static const struct pci_device_id dwxgmac_brcm_id_table[] = {
+	{ PCI_DEVICE_DATA(BROADCOM, BCM8958X, &dwxgmac_brcm_pci_info) },
+	{}
+};
+
+MODULE_DEVICE_TABLE(pci, dwxgmac_brcm_id_table);
+
+static struct pci_driver dwxgmac_brcm_pci_driver = {
+	.name = "brcm-bcm8958x",
+	.id_table = dwxgmac_brcm_id_table,
+	.probe	= dwxgmac_brcm_pci_probe,
+	.remove = dwxgmac_brcm_pci_remove,
+	.driver = {
+		.pm = &dwxgmac_brcm_pm_ops,
+	},
+};
+
+module_pci_driver(dwxgmac_brcm_pci_driver);
+
+MODULE_DESCRIPTION("Broadcom 10G Automotive Ethernet PCIe driver");
+MODULE_LICENSE("GPL");
--
2.34.1







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