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");