projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| efed421a AP |
2 | /* |
| 3 | * bdc_pci.c - BRCM BDC USB3.0 device controller PCI interface file. | |
| 4 | * | |
| 5 | * Copyright (C) 2014 Broadcom Corporation | |
| 6 | * | |
| 7 | * Author: Ashwini Pahuja | |
| 8 | * | |
| 9 | * Based on drivers under drivers/usb/ | |
| efed421a AP |
10 | */ |
| 11 | ||
| 12 | #include <linux/kernel.h> | |
| 13 | #include <linux/module.h> | |
| 14 | #include <linux/slab.h> | |
| 15 | #include <linux/pci.h> | |
| 16 | #include <linux/pci_ids.h> | |
| 17 | #include <linux/platform_device.h> | |
| 18 | ||
| 19 | #include "bdc.h" | |
| 20 | ||
| 21 | #define BDC_PCI_PID 0x1570 | |
| 22 | ||
| 23 | struct bdc_pci { | |
| 24 | struct device *dev; | |
| 25 | struct platform_device *bdc; | |
| 26 | }; | |
| 27 | ||
| 28 | static int bdc_setup_msi(struct pci_dev *pci) | |
| 29 | { | |
| 30 | int ret; | |
| 31 | ||
| 32 | ret = pci_enable_msi(pci); | |
| 33 | if (ret) { | |
| 34 | pr_err("failed to allocate MSI entry\n"); | |
| 35 | return ret; | |
| 36 | } | |
| 37 | ||
| 38 | return ret; | |
| 39 | } | |
| 40 | ||
| 41 | static int bdc_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) | |
| 42 | { | |
| 43 | struct resource res[2]; | |
| 44 | struct platform_device *bdc; | |
| 45 | struct bdc_pci *glue; | |
| 46 | int ret = -ENOMEM; | |
| 47 | ||
| 48 | glue = devm_kzalloc(&pci->dev, sizeof(*glue), GFP_KERNEL); | |
| 49 | if (!glue) | |
| 50 | return -ENOMEM; | |
| 51 | ||
| 52 | glue->dev = &pci->dev; | |
| 53 | ret = pci_enable_device(pci); | |
| 54 | if (ret) { | |
| 55 | dev_err(&pci->dev, "failed to enable pci device\n"); | |
| 56 | return -ENODEV; | |
| 57 | } | |
| 58 | pci_set_master(pci); | |
| 59 | ||
| 60 | bdc = platform_device_alloc(BRCM_BDC_NAME, PLATFORM_DEVID_AUTO); | |
| 61 | if (!bdc) | |
| 62 | return -ENOMEM; | |
| 63 | ||
| 64 | memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); | |
| 65 | bdc_setup_msi(pci); | |
| 66 | ||
| 67 | res[0].start = pci_resource_start(pci, 0); | |
| 68 | res[0].end = pci_resource_end(pci, 0); | |
| 69 | res[0].name = BRCM_BDC_NAME; | |
| 70 | res[0].flags = IORESOURCE_MEM; | |
| 71 | ||
| 72 | res[1].start = pci->irq; | |
| 73 | res[1].name = BRCM_BDC_NAME; | |
| 74 | res[1].flags = IORESOURCE_IRQ; | |
| 75 | ||
| 76 | ret = platform_device_add_resources(bdc, res, ARRAY_SIZE(res)); | |
| 77 | if (ret) { | |
| 78 | dev_err(&pci->dev, | |
| 79 | "couldn't add resources to bdc device\n"); | |
| 8874ae5f | 80 | platform_device_put(bdc); |
| efed421a AP |
81 | return ret; |
| 82 | } | |
| 83 | ||
| 84 | pci_set_drvdata(pci, glue); | |
| 85 | ||
| 86 | dma_set_coherent_mask(&bdc->dev, pci->dev.coherent_dma_mask); | |
| 87 | ||
| 88 | bdc->dev.dma_mask = pci->dev.dma_mask; | |
| 89 | bdc->dev.dma_parms = pci->dev.dma_parms; | |
| 90 | bdc->dev.parent = &pci->dev; | |
| 91 | glue->bdc = bdc; | |
| 92 | ||
| 93 | ret = platform_device_add(bdc); | |
| 94 | if (ret) { | |
| 95 | dev_err(&pci->dev, "failed to register bdc device\n"); | |
| 96 | platform_device_put(bdc); | |
| 97 | return ret; | |
| 98 | } | |
| 99 | ||
| 100 | return 0; | |
| 101 | } | |
| 102 | ||
| 103 | static void bdc_pci_remove(struct pci_dev *pci) | |
| 104 | { | |
| 105 | struct bdc_pci *glue = pci_get_drvdata(pci); | |
| 106 | ||
| 107 | platform_device_unregister(glue->bdc); | |
| 108 | pci_disable_msi(pci); | |
| 109 | } | |
| 110 | ||
| 111 | static struct pci_device_id bdc_pci_id_table[] = { | |
| 112 | { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, BDC_PCI_PID), }, | |
| 113 | {} /* Terminating Entry */ | |
| 114 | }; | |
| 115 | ||
| 116 | MODULE_DEVICE_TABLE(pci, bdc_pci_id_table); | |
| 117 | ||
| 118 | static struct pci_driver bdc_pci_driver = { | |
| 119 | .name = "bdc-pci", | |
| 120 | .id_table = bdc_pci_id_table, | |
| 121 | .probe = bdc_pci_probe, | |
| 122 | .remove = bdc_pci_remove, | |
| 123 | }; | |
| 124 | ||
| 125 | MODULE_AUTHOR("Ashwini Pahuja <ashwini.linux@gmail.com>"); | |
| 126 | MODULE_LICENSE("GPL"); | |
| 127 | MODULE_DESCRIPTION("BRCM BDC USB3 PCI Glue layer"); | |
| 128 | module_pci_driver(bdc_pci_driver); |