1 files changed, 388 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_core.c b/drivers/net/ethernet/broadcom/bnge/bnge_core.c
new file mode 100644
index 000000000000..68da656f2894
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_core.c
@@ -0,0 +1,388 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2025 Broadcom.
+
+#include <linux/init.h>
+#include <linux/crash_dump.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "bnge.h"
+#include "bnge_devlink.h"
+#include "bnge_hwrm.h"
+#include "bnge_hwrm_lib.h"
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRV_SUMMARY);
+
+char bnge_driver_name[] = DRV_NAME;
+
+static const struct {
+	char *name;
+} board_info[] = {
+	[BCM57708] = { "Broadcom BCM57708 50Gb/100Gb/200Gb/400Gb/800Gb Ethernet" },
+};
+
+static const struct pci_device_id bnge_pci_tbl[] = {
+	{ PCI_VDEVICE(BROADCOM, 0x1780), .driver_data = BCM57708 },
+	/* Required last entry */
+	{0, }
+};
+MODULE_DEVICE_TABLE(pci, bnge_pci_tbl);
+
+static void bnge_print_device_info(struct pci_dev *pdev, enum board_idx idx)
+{
+	struct device *dev = &pdev->dev;
+
+	dev_info(dev, "%s found at mem %lx\n", board_info[idx].name,
+		 (long)pci_resource_start(pdev, 0));
+
+	pcie_print_link_status(pdev);
+}
+
+bool bnge_aux_registered(struct bnge_dev *bd)
+{
+	return false;
+}
+
+static void bnge_nvm_cfg_ver_get(struct bnge_dev *bd)
+{
+	struct hwrm_nvm_get_dev_info_output nvm_info;
+
+	if (!bnge_hwrm_nvm_dev_info(bd, &nvm_info))
+		snprintf(bd->nvm_cfg_ver, FW_VER_STR_LEN, "%d.%d.%d",
+			 nvm_info.nvm_cfg_ver_maj, nvm_info.nvm_cfg_ver_min,
+			 nvm_info.nvm_cfg_ver_upd);
+}
+
+static int bnge_func_qcaps(struct bnge_dev *bd)
+{
+	int rc;
+
+	rc = bnge_hwrm_func_qcaps(bd);
+	if (rc)
+		return rc;
+
+	rc = bnge_hwrm_queue_qportcfg(bd);
+	if (rc) {
+		dev_err(bd->dev, "query qportcfg failure rc: %d\n", rc);
+		return rc;
+	}
+
+	rc = bnge_hwrm_func_resc_qcaps(bd);
+	if (rc) {
+		dev_err(bd->dev, "query resc caps failure rc: %d\n", rc);
+		return rc;
+	}
+
+	rc = bnge_hwrm_func_qcfg(bd);
+	if (rc) {
+		dev_err(bd->dev, "query config failure rc: %d\n", rc);
+		return rc;
+	}
+
+	rc = bnge_hwrm_vnic_qcaps(bd);
+	if (rc) {
+		dev_err(bd->dev, "vnic caps failure rc: %d\n", rc);
+		return rc;
+	}
+
+	return 0;
+}
+
+static void bnge_fw_unregister_dev(struct bnge_dev *bd)
+{
+	/* ctx mem free after unrgtr only */
+	bnge_hwrm_func_drv_unrgtr(bd);
+	bnge_free_ctx_mem(bd);
+}
+
+static int bnge_fw_register_dev(struct bnge_dev *bd)
+{
+	int rc;
+
+	bd->fw_cap = 0;
+	rc = bnge_hwrm_ver_get(bd);
+	if (rc) {
+		dev_err(bd->dev, "Get Version command failed rc: %d\n", rc);
+		return rc;
+	}
+
+	bnge_nvm_cfg_ver_get(bd);
+
+	rc = bnge_hwrm_func_reset(bd);
+	if (rc) {
+		dev_err(bd->dev, "Failed to reset function rc: %d\n", rc);
+		return rc;
+	}
+
+	bnge_hwrm_fw_set_time(bd);
+
+	rc =  bnge_hwrm_func_drv_rgtr(bd);
+	if (rc) {
+		dev_err(bd->dev, "Failed to rgtr with firmware rc: %d\n", rc);
+		return rc;
+	}
+
+	rc = bnge_alloc_ctx_mem(bd);
+	if (rc) {
+		dev_err(bd->dev, "Failed to allocate ctx mem rc: %d\n", rc);
+		goto err_func_unrgtr;
+	}
+
+	/* Get the resources and configuration from firmware */
+	rc = bnge_func_qcaps(bd);
+	if (rc) {
+		dev_err(bd->dev, "Failed initial configuration rc: %d\n", rc);
+		rc = -ENODEV;
+		goto err_func_unrgtr;
+	}
+
+	return 0;
+
+err_func_unrgtr:
+	bnge_fw_unregister_dev(bd);
+	return rc;
+}
+
+static void bnge_pci_disable(struct pci_dev *pdev)
+{
+	pci_release_regions(pdev);
+	if (pci_is_enabled(pdev))
+		pci_disable_device(pdev);
+}
+
+static int bnge_pci_enable(struct pci_dev *pdev)
+{
+	int rc;
+
+	rc = pci_enable_device(pdev);
+	if (rc) {
+		dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
+		return rc;
+	}
+
+	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+		dev_err(&pdev->dev,
+			"Cannot find PCI device base address, aborting\n");
+		rc = -ENODEV;
+		goto err_pci_disable;
+	}
+
+	rc = pci_request_regions(pdev, bnge_driver_name);
+	if (rc) {
+		dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
+		goto err_pci_disable;
+	}
+
+	dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+
+	pci_set_master(pdev);
+
+	return 0;
+
+err_pci_disable:
+	pci_disable_device(pdev);
+	return rc;
+}
+
+static void bnge_unmap_bars(struct pci_dev *pdev)
+{
+	struct bnge_dev *bd = pci_get_drvdata(pdev);
+
+	if (bd->bar1) {
+		pci_iounmap(pdev, bd->bar1);
+		bd->bar1 = NULL;
+	}
+
+	if (bd->bar0) {
+		pci_iounmap(pdev, bd->bar0);
+		bd->bar0 = NULL;
+	}
+}
+
+static void bnge_set_max_func_irqs(struct bnge_dev *bd,
+				   unsigned int max_irqs)
+{
+	bd->hw_resc.max_irqs = max_irqs;
+}
+
+static int bnge_get_max_irq(struct pci_dev *pdev)
+{
+	u16 ctrl;
+
+	pci_read_config_word(pdev, pdev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
+	return (ctrl & PCI_MSIX_FLAGS_QSIZE) + 1;
+}
+
+static int bnge_map_db_bar(struct bnge_dev *bd)
+{
+	if (!bd->db_size)
+		return -ENODEV;
+
+	bd->bar1 = pci_iomap(bd->pdev, 2, bd->db_size);
+	if (!bd->bar1)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static int bnge_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	unsigned int max_irqs;
+	struct bnge_dev *bd;
+	int rc;
+
+	if (pci_is_bridge(pdev))
+		return -ENODEV;
+
+	if (!pdev->msix_cap) {
+		dev_err(&pdev->dev, "MSIX capability missing, aborting\n");
+		return -ENODEV;
+	}
+
+	if (is_kdump_kernel()) {
+		pci_clear_master(pdev);
+		pcie_flr(pdev);
+	}
+
+	rc = bnge_pci_enable(pdev);
+	if (rc)
+		return rc;
+
+	bnge_print_device_info(pdev, ent->driver_data);
+
+	bd = bnge_devlink_alloc(pdev);
+	if (!bd) {
+		dev_err(&pdev->dev, "Devlink allocation failed\n");
+		rc = -ENOMEM;
+		goto err_pci_disable;
+	}
+
+	bd->bar0 = pci_ioremap_bar(pdev, 0);
+	if (!bd->bar0) {
+		dev_err(&pdev->dev, "Failed mapping BAR-0, aborting\n");
+		rc = -ENOMEM;
+		goto err_devl_free;
+	}
+
+	rc = bnge_init_hwrm_resources(bd);
+	if (rc)
+		goto err_bar_unmap;
+
+	rc = bnge_fw_register_dev(bd);
+	if (rc) {
+		dev_err(&pdev->dev, "Failed to register with firmware rc = %d\n", rc);
+		goto err_hwrm_cleanup;
+	}
+
+	bnge_devlink_register(bd);
+
+	max_irqs = bnge_get_max_irq(pdev);
+	bnge_set_max_func_irqs(bd, max_irqs);
+
+	bnge_aux_init_dflt_config(bd);
+
+	rc = bnge_net_init_dflt_config(bd);
+	if (rc) {
+		dev_err(&pdev->dev, "Error setting up default cfg to netdev rc = %d\n",
+			rc);
+		goto err_fw_reg;
+	}
+
+	rc = bnge_map_db_bar(bd);
+	if (rc) {
+		dev_err(&pdev->dev, "Failed mapping doorbell BAR rc = %d, aborting\n",
+			rc);
+		goto err_config_uninit;
+	}
+
+	rc = bnge_alloc_irqs(bd);
+	if (rc) {
+		dev_err(&pdev->dev, "Error IRQ allocation rc = %d\n", rc);
+		goto err_config_uninit;
+	}
+
+	rc = bnge_netdev_alloc(bd, max_irqs);
+	if (rc)
+		goto err_free_irq;
+
+	pci_save_state(pdev);
+
+	return 0;
+
+err_free_irq:
+	bnge_free_irqs(bd);
+
+err_config_uninit:
+	bnge_net_uninit_dflt_config(bd);
+
+err_fw_reg:
+	bnge_devlink_unregister(bd);
+	bnge_fw_unregister_dev(bd);
+
+err_hwrm_cleanup:
+	bnge_cleanup_hwrm_resources(bd);
+
+err_bar_unmap:
+	bnge_unmap_bars(pdev);
+
+err_devl_free:
+	bnge_devlink_free(bd);
+
+err_pci_disable:
+	bnge_pci_disable(pdev);
+	return rc;
+}
+
+static void bnge_remove_one(struct pci_dev *pdev)
+{
+	struct bnge_dev *bd = pci_get_drvdata(pdev);
+
+	bnge_netdev_free(bd);
+
+	bnge_free_irqs(bd);
+
+	bnge_net_uninit_dflt_config(bd);
+
+	bnge_devlink_unregister(bd);
+
+	bnge_fw_unregister_dev(bd);
+
+	bnge_cleanup_hwrm_resources(bd);
+
+	bnge_unmap_bars(pdev);
+
+	bnge_devlink_free(bd);
+
+	bnge_pci_disable(pdev);
+}
+
+static void bnge_shutdown(struct pci_dev *pdev)
+{
+	pci_disable_device(pdev);
+
+	if (system_state == SYSTEM_POWER_OFF) {
+		pci_wake_from_d3(pdev, 0);
+		pci_set_power_state(pdev, PCI_D3hot);
+	}
+}
+
+static struct pci_driver bnge_driver = {
+	.name		= bnge_driver_name,
+	.id_table	= bnge_pci_tbl,
+	.probe		= bnge_probe_one,
+	.remove		= bnge_remove_one,
+	.shutdown	= bnge_shutdown,
+};
+
+static int __init bnge_init_module(void)
+{
+	return pci_register_driver(&bnge_driver);
+}
+module_init(bnge_init_module);
+
+static void __exit bnge_exit_module(void)
+{
+	pci_unregister_driver(&bnge_driver);
+}
+module_exit(bnge_exit_module);