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 */
  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
  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
  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
  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");