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_NORMAL;
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_bcma_pcie_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_bcma_pcie_probe(struct bcma_device *bdev)
35{
36	struct device *dev = &bdev->dev;
37	struct iproc_pcie *pcie;
38	struct pci_host_bridge *bridge;
39	int ret;
40
41	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
42	if (!bridge)
43		return -ENOMEM;
44
45	pcie = pci_host_bridge_priv(bridge);
46
47	pcie->dev = dev;
48
49	pcie->type = IPROC_PCIE_PAXB_BCMA;
50	pcie->base = bdev->io_addr;
51	if (!pcie->base) {
52		dev_err(dev, "no controller registers\n");
53		return -ENOMEM;
54	}
55
56	pcie->base_addr = bdev->addr;
57
58	pcie->mem.start = bdev->addr_s[0];
59	pcie->mem.end = bdev->addr_s[0] + SZ_128M - 1;
60	pcie->mem.name = "PCIe MEM space";
61	pcie->mem.flags = IORESOURCE_MEM;
62	pci_add_resource(&bridge->windows, &pcie->mem);
63	ret = devm_request_pci_bus_resources(dev, &bridge->windows);
64	if (ret)
65		return ret;
66
67	pcie->map_irq = iproc_bcma_pcie_map_irq;
68
69	bcma_set_drvdata(bdev, pcie);
70
71	return iproc_pcie_setup(pcie, &bridge->windows);
72}
73
74static void iproc_bcma_pcie_remove(struct bcma_device *bdev)
75{
76	struct iproc_pcie *pcie = bcma_get_drvdata(bdev);
77
78	iproc_pcie_remove(pcie);
79}
80
81static const struct bcma_device_id iproc_bcma_pcie_table[] = {
82	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
83	{},
84};
85MODULE_DEVICE_TABLE(bcma, iproc_bcma_pcie_table);
86
87static struct bcma_driver iproc_bcma_pcie_driver = {
88	.name		= KBUILD_MODNAME,
89	.id_table	= iproc_bcma_pcie_table,
90	.probe		= iproc_bcma_pcie_probe,
91	.remove		= iproc_bcma_pcie_remove,
92};
93module_bcma_driver(iproc_bcma_pcie_driver);
94
95MODULE_AUTHOR("Hauke Mehrtens");
96MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
97MODULE_LICENSE("GPL v2");
98