LXR linux/drivers/pci/controller/pcie-iproc-bcma.c

   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");
 113