// SPDX-License-Identifier: GPL-2.0+ /* * bdc_pci.c - BRCM BDC USB3.0 device controller PCI interface file. * * Copyright (C) 2014 Broadcom Corporation * * Author: Ashwini Pahuja * * Based on drivers under drivers/usb/ */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/pci_ids.h> #include <linux/platform_device.h> #include "bdc.h" #define BDC_PCI_PID 0x1570 struct bdc_pci { struct device *dev; struct platform_device *bdc; }; static int bdc_setup_msi(struct pci_dev *pci) { int ret; ret = pci_enable_msi(pci); if (ret) { pr_err("failed to allocate MSI entry\n"); return ret; } return ret; } static int bdc_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) { struct resource res[2]; struct platform_device *bdc; struct bdc_pci *glue; int ret = -ENOMEM; glue = devm_kzalloc(&pci->dev, sizeof(*glue), GFP_KERNEL); if (!glue) return -ENOMEM; glue->dev = &pci->dev; ret = pci_enable_device(pci); if (ret) { dev_err(&pci->dev, "failed to enable pci device\n"); return -ENODEV; } pci_set_master(pci); bdc = platform_device_alloc(BRCM_BDC_NAME, PLATFORM_DEVID_AUTO); if (!bdc) return -ENOMEM; memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); bdc_setup_msi(pci); res[0].start = pci_resource_start(pci, 0); res[0].end = pci_resource_end(pci, 0); res[0].name = BRCM_BDC_NAME; res[0].flags = IORESOURCE_MEM; res[1].start = pci->irq; res[1].name = BRCM_BDC_NAME; res[1].flags = IORESOURCE_IRQ; ret = platform_device_add_resources(bdc, res, ARRAY_SIZE(res)); if (ret) { dev_err(&pci->dev, "couldn't add resources to bdc device\n"); platform_device_put(bdc); return ret; } pci_set_drvdata(pci, glue); dma_set_coherent_mask(&bdc->dev, pci->dev.coherent_dma_mask); bdc->dev.dma_mask = pci->dev.dma_mask; bdc->dev.dma_parms = pci->dev.dma_parms; bdc->dev.parent = &pci->dev; glue->bdc = bdc; ret = platform_device_add(bdc); if (ret) { dev_err(&pci->dev, "failed to register bdc device\n"); platform_device_put(bdc); return ret; } return 0; } static void bdc_pci_remove(struct pci_dev *pci) { struct bdc_pci *glue = pci_get_drvdata(pci); platform_device_unregister(glue->bdc); pci_disable_msi(pci); } static struct pci_device_id bdc_pci_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, BDC_PCI_PID), }, {} /* Terminating Entry */ }; MODULE_DEVICE_TABLE(pci, bdc_pci_id_table); static struct pci_driver bdc_pci_driver = { .name = "bdc-pci", .id_table = bdc_pci_id_table, .probe = bdc_pci_probe, .remove = bdc_pci_remove, }; MODULE_AUTHOR("Ashwini Pahuja <ashwini.linux@gmail.com>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("BRCM BDC USB3 PCI Glue layer"); module_pci_driver(bdc_pci_driver);