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Message-Id: <20240802031822.1862030-4-jitendra.vegiraju@broadcom.com>
Date: Thu, 1 Aug 2024 20:18:22 -0700
From: jitendra.vegiraju@...adcom.com
To: netdev@...r.kernel.org
Cc: alexandre.torgue@...s.st.com,
joabreu@...opsys.com,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
mcoquelin.stm32@...il.com,
jitendra.vegiraju@...adcom.com,
bcm-kernel-feedback-list@...adcom.com,
richardcochran@...il.com,
ast@...nel.org,
daniel@...earbox.net,
hawk@...nel.org,
john.fastabend@...il.com,
linux-kernel@...r.kernel.org,
linux-stm32@...md-mailman.stormreply.com,
linux-arm-kernel@...ts.infradead.org,
bpf@...r.kernel.org,
andrew@...n.ch,
linux@...linux.org.uk,
horms@...nel.org,
florian.fainelli@...adcom.com
Subject: [PATCH net-next v3 3/3] net: stmmac: Add PCI driver support for BCM8958x
From: Jitendra Vegiraju <jitendra.vegiraju@...adcom.com>
Add PCI ethernet driver support for Broadcom BCM8958x SoC devices used
in automotive applications.
This SoC device has PCIe ethernet MAC attached to an integrated ethernet
switch using XGMII interface. The PCIe ethernet controller is presented to
the Linux host as PCI network device.
The following block diagram gives an overview of the application.
+=================================+
| Host CPU/Linux |
+=================================+
|| PCIe
||
+==========================================+
| +--------------+ |
| | PCIE Endpoint| |
| | Ethernet | |
| | Controller | |
| | DMA | |
| +--------------+ |
| | MAC | BCM8958X |
| +--------------+ SoC |
| || XGMII |
| || |
| +--------------+ |
| | Ethernet | |
| | switch | |
| +--------------+ |
| || || || || |
+==========================================+
|| || || || More external interfaces
The MAC block on BCM8958x is based on Synopsis XGMAC 4.00a core. This
driver uses common dwxgmac2 code where applicable.
Driver functionality specific to this MAC is implemented in dwxgmac4.c.
Management of integrated ethernet switch on this SoC is not handled by
the PCIe interface.
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@...adcom.com>
---
MAINTAINERS | 8 +
drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 +
drivers/net/ethernet/stmicro/stmmac/Makefile | 1 +
.../net/ethernet/stmicro/stmmac/dwmac-brcm.c | 517 ++++++++++++++++++
4 files changed, 537 insertions(+)
create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 8766f3e5e87e..cce3d2e9eb22 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4350,6 +4350,14 @@ N: brcmstb
N: bcm7038
N: bcm7120
+BROADCOM BCM8958X ETHERNET DRIVER
+M: Jitendra Vegiraju <jitendra.vegiraju@...adcom.com>
+R: Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>
+L: netdev@...r.kernel.org
+S: Maintained
+F: drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c
+F: drivers/net/ethernet/stmicro/stmmac/dwxgmac4.*
+
BROADCOM BCMBCA ARM ARCHITECTURE
M: William Zhang <william.zhang@...adcom.com>
M: Anand Gore <anand.gore@...adcom.com>
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 05cc07b8f48c..47c9db123b03 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -298,6 +298,17 @@ config DWMAC_LOONGSON
This selects the LOONGSON PCI bus support for the stmmac driver,
Support for ethernet controller on Loongson-2K1000 SoC and LS7A1000 bridge.
+config DWMAC_BRCM
+ tristate "Broadcom XGMAC support"
+ depends on STMMAC_ETH && PCI
+ depends on COMMON_CLK
+ help
+ Support for ethernet controllers on Broadcom BCM8958x SoCs.
+
+ This selects Broadcom XGMAC specific PCI bus support for the
+ stmmac driver. This driver provides the glue layer on top of the
+ stmmac driver required for the Broadcom BCM8958x SoC devices.
+
config STMMAC_PCI
tristate "STMMAC PCI bus support"
depends on STMMAC_ETH && PCI
diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
index 2f637612513d..90c135ea25eb 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Makefile
+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
@@ -41,4 +41,5 @@ dwmac-altr-socfpga-objs := dwmac-socfpga.o
obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o
obj-$(CONFIG_DWMAC_INTEL) += dwmac-intel.o
obj-$(CONFIG_DWMAC_LOONGSON) += dwmac-loongson.o
+obj-$(CONFIG_DWMAC_BRCM) += dwmac-brcm.o
stmmac-pci-objs:= stmmac_pci.o
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..a7b0031506b8
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c
@@ -0,0 +1,517 @@
+// 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 0x4
+#define XGMAC_PCIE_MISC_MII_CTRL_VALUE 0x7
+#define XGMAC_PCIE_MISC_PCIESS_CTRL 0x8
+#define XGMAC_PCIE_MISC_PCIESS_CTRL_VALUE 0x200
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_LO 0x90
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_LO_VALUE 0x00000001
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI 0x94
+#define XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI_VALUE 0x88000000
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0 0x700
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0_VALUE 1
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1 0x704
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1_VALUE 1
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL 0x728
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL_VALUE 1
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL 0x740
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL_VALUE 0
+
+#define XGMAC_PCIE_MISC_FUNC_RESOURCES_PF0 0x804
+
+/* MSIX Vector map register starting offsets */
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_RX0_PF0 0x840
+#define XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_TX0_PF0 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 const struct software_node phy_handle_node = {
+ .name = "bcm8958x-fixed-link",
+};
+
+static const struct property_entry fixed_link_properties[] = {
+ PROPERTY_ENTRY_U32("speed", 10000),
+ PROPERTY_ENTRY_BOOL("full-duplex"),
+ PROPERTY_ENTRY_BOOL("pause"),
+ { }
+};
+
+static const struct software_node fixed_link_node = {
+ .name = "fixed-link",
+ .parent = &phy_handle_node,
+ .properties = fixed_link_properties,
+};
+
+static const struct software_node *fixed_link_node_group[] = {
+ &phy_handle_node,
+ &fixed_link_node,
+ NULL
+};
+
+static int num_instances;
+
+struct brcm_priv_data {
+ void __iomem *mbox_regs; /* MBOX Registers*/
+ void __iomem *misc_regs; /* MISC Registers*/
+ void __iomem *xgmac_regs; /* XGMAC Registers*/
+};
+
+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;
+
+ priv->synopsys_id = DWXGMAC_CORE_4_00;
+ 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->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;
+ }
+}
+
+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;
+
+ 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;
+ int rx_offset;
+ int tx_offset;
+ int vector;
+ int ret;
+
+ 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->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.
+ */
+ if (num_instances == 0) {
+ ret = software_node_register_node_group(fixed_link_node_group);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "%s: failed to register software node\n",
+ __func__);
+ return ret;
+ }
+ }
+ num_instances++;
+ plat->port_node = software_node_fwnode(&phy_handle_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,
+ XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_LO_VALUE);
+ misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI,
+ XGMAC_PCIE_MISC_MSIX_ADDR_MATCH_HI_VALUE);
+
+ /* SBD Interrupt */
+ misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL,
+ XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_SBD_ALL_VALUE);
+ /* EP_DOORBELL Interrupt */
+ misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL,
+ XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST_DBELL_VALUE);
+ /* EP_H0 Interrupt */
+ misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0,
+ XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST0_VALUE);
+ /* EP_H1 Interrupt */
+ misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1,
+ XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_EP2HOST1_VALUE);
+
+ rx_offset = XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_RX0_PF0;
+ tx_offset = XGMAC_PCIE_MISC_MSIX_VECTOR_MAP_TX0_PF0;
+ 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,
+ XGMAC_PCIE_MISC_MII_CTRL_VALUE);
+ /* Enable MSI-X */
+ misc_iowrite(brcm_priv, XGMAC_PCIE_MISC_PCIESS_CTRL,
+ XGMAC_PCIE_MISC_PCIESS_CTRL_VALUE);
+
+ 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);
+
+ return ret;
+}
+
+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);
+
+ if (num_instances == 1)
+ software_node_unregister_node_group(fixed_link_node_group);
+ num_instances--;
+}
+
+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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