tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2015 Broadcom Corporation
3 * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation version 2.
8 *
9 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
10 * kind, whether express or implied; without even the implied warranty
11 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15#include <linux/kernel.h>
16#include <linux/pci.h>
17#include <linux/module.h>
18#include <linux/slab.h>
19#include <linux/phy/phy.h>
20#include <linux/bcma/bcma.h>
21#include <linux/ioport.h>
22
23#include "pcie-iproc.h"
24
25
26/* NS: CLASS field is R/O, and set to wrong 0x200 value */
27static void bcma_pcie2_fixup_class(struct pci_dev *dev)
28{
29 dev->class = PCI_CLASS_BRIDGE_PCI << 8;
30}
31DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class);
32DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class);
33
34static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
35{
36 struct pci_sys_data *sys = dev->sysdata;
37 struct iproc_pcie *pcie = sys->private_data;
38 struct bcma_device *bdev = container_of(pcie->dev, struct bcma_device, dev);
39
40 return bcma_core_irq(bdev, 5);
41}
42
43static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
44{
45 struct device *dev = &bdev->dev;
46 struct iproc_pcie *pcie;
47 LIST_HEAD(resources);
48 struct pci_host_bridge *bridge;
49 int ret;
50
51 bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
52 if (!bridge)
53 return -ENOMEM;
54
55 pcie = pci_host_bridge_priv(bridge);
56
57 pcie->dev = dev;
58
59 pcie->type = IPROC_PCIE_PAXB_BCMA;
60 pcie->base = bdev->io_addr;
61 if (!pcie->base) {
62 dev_err(dev, "no controller registers\n");
63 return -ENOMEM;
64 }
65
66 pcie->base_addr = bdev->addr;
67
68 pcie->mem.start = bdev->addr_s[0];
69 pcie->mem.end = bdev->addr_s[0] + SZ_128M - 1;
70 pcie->mem.name = "PCIe MEM space";
71 pcie->mem.flags = IORESOURCE_MEM;
72 pci_add_resource(&resources, &pcie->mem);
73
74 pcie->map_irq = iproc_pcie_bcma_map_irq;
75
76 ret = iproc_pcie_setup(pcie, &resources);
77 if (ret) {
78 dev_err(dev, "PCIe controller setup failed\n");
79 pci_free_resource_list(&resources);
80 return ret;
81 }
82
83 bcma_set_drvdata(bdev, pcie);
84 return 0;
85}
86
87static void iproc_pcie_bcma_remove(struct bcma_device *bdev)
88{
89 struct iproc_pcie *pcie = bcma_get_drvdata(bdev);
90
91 iproc_pcie_remove(pcie);
92}
93
94static const struct bcma_device_id iproc_pcie_bcma_table[] = {
95 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
96 {},
97};
98MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table);
99
100static struct bcma_driver iproc_pcie_bcma_driver = {
101 .name = KBUILD_MODNAME,
102 .id_table = iproc_pcie_bcma_table,
103 .probe = iproc_pcie_bcma_probe,
104 .remove = iproc_pcie_bcma_remove,
105};
106
107static int __init iproc_pcie_bcma_init(void)
108{
109 return bcma_driver_register(&iproc_pcie_bcma_driver);
110}
111module_init(iproc_pcie_bcma_init);
112
113static void __exit iproc_pcie_bcma_exit(void)
114{
115 bcma_driver_unregister(&iproc_pcie_bcma_driver);
116}
117module_exit(iproc_pcie_bcma_exit);
118
119MODULE_AUTHOR("Hauke Mehrtens");
120MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
121MODULE_LICENSE("GPL v2");