tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2015 Broadcom Corporation
4 * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
5 */
6
7#include <linux/kernel.h>
8#include <linux/pci.h>
9#include <linux/module.h>
10#include <linux/slab.h>
11#include <linux/phy/phy.h>
12#include <linux/bcma/bcma.h>
13#include <linux/ioport.h>
14
15#include "pcie-iproc.h"
16
17
18/* NS: CLASS field is R/O, and set to wrong 0x200 value */
19static void bcma_pcie2_fixup_class(struct pci_dev *dev)
20{
21 dev->class = PCI_CLASS_BRIDGE_PCI << 8;
22}
23DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class);
24DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class);
25
26static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
27{
28 struct iproc_pcie *pcie = dev->sysdata;
29 struct bcma_device *bdev = container_of(pcie->dev, struct bcma_device, dev);
30
31 return bcma_core_irq(bdev, 5);
32}
33
34static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
35{
36 struct device *dev = &bdev->dev;
37 struct iproc_pcie *pcie;
38 LIST_HEAD(resources);
39 struct pci_host_bridge *bridge;
40 int ret;
41
42 bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
43 if (!bridge)
44 return -ENOMEM;
45
46 pcie = pci_host_bridge_priv(bridge);
47
48 pcie->dev = dev;
49
50 pcie->type = IPROC_PCIE_PAXB_BCMA;
51 pcie->base = bdev->io_addr;
52 if (!pcie->base) {
53 dev_err(dev, "no controller registers\n");
54 return -ENOMEM;
55 }
56
57 pcie->base_addr = bdev->addr;
58
59 pcie->mem.start = bdev->addr_s[0];
60 pcie->mem.end = bdev->addr_s[0] + SZ_128M - 1;
61 pcie->mem.name = "PCIe MEM space";
62 pcie->mem.flags = IORESOURCE_MEM;
63 pci_add_resource(&resources, &pcie->mem);
64
65 pcie->map_irq = iproc_pcie_bcma_map_irq;
66
67 ret = iproc_pcie_setup(pcie, &resources);
68 if (ret) {
69 dev_err(dev, "PCIe controller setup failed\n");
70 pci_free_resource_list(&resources);
71 return ret;
72 }
73
74 bcma_set_drvdata(bdev, pcie);
75 return 0;
76}
77
78static void iproc_pcie_bcma_remove(struct bcma_device *bdev)
79{
80 struct iproc_pcie *pcie = bcma_get_drvdata(bdev);
81
82 iproc_pcie_remove(pcie);
83}
84
85static const struct bcma_device_id iproc_pcie_bcma_table[] = {
86 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
87 {},
88};
89MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table);
90
91static struct bcma_driver iproc_pcie_bcma_driver = {
92 .name = KBUILD_MODNAME,
93 .id_table = iproc_pcie_bcma_table,
94 .probe = iproc_pcie_bcma_probe,
95 .remove = iproc_pcie_bcma_remove,
96};
97
98static int __init iproc_pcie_bcma_init(void)
99{
100 return bcma_driver_register(&iproc_pcie_bcma_driver);
101}
102module_init(iproc_pcie_bcma_init);
103
104static void __exit iproc_pcie_bcma_exit(void)
105{
106 bcma_driver_unregister(&iproc_pcie_bcma_driver);
107}
108module_exit(iproc_pcie_bcma_exit);
109
110MODULE_AUTHOR("Hauke Mehrtens");
111MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
112MODULE_LICENSE("GPL v2");