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 */
19 static void bcma_pcie2_fixup_class(struct pci_dev *dev)
20 {
21 	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
22 }
23 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class);
24 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class);
25 
26 static 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 
34 static 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 
78 static 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 
85 static 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 };
89 MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table);
90 
91 static 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 module_bcma_driver(iproc_pcie_bcma_driver);
98 
99 MODULE_AUTHOR("Hauke Mehrtens");
100 MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
101 MODULE_LICENSE("GPL v2");
102