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 */
bcma_pcie2_fixup_class(struct pci_dev * dev)19 static void bcma_pcie2_fixup_class(struct pci_dev *dev)
20 {
21 dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL;
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
iproc_bcma_pcie_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)26 static 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
iproc_bcma_pcie_probe(struct bcma_device * bdev)34 static 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
iproc_bcma_pcie_remove(struct bcma_device * bdev)74 static 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
81 static 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 };
85 MODULE_DEVICE_TABLE(bcma, iproc_bcma_pcie_table);
86
87 static 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 };
93 module_bcma_driver(iproc_bcma_pcie_driver);
94
95 MODULE_AUTHOR("Hauke Mehrtens");
96 MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
97 MODULE_LICENSE("GPL v2");
98
