drivers/pci/host/pcie-iproc-bcma.c

   1 /*
   2  * Copyright (C) 2015 Broadcom Corporation
   3  * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation version 2.
   8  *
   9  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  10  * kind, whether express or implied; without even the implied warranty
  11  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/pci.h>
  17 #include <linux/module.h>
  18 #include <linux/slab.h>
  19 #include <linux/phy/phy.h>
  20 #include <linux/bcma/bcma.h>
  21 #include <linux/ioport.h>
  22
  23 #include "pcie-iproc.h"
  24
  25
  26 /* NS: CLASS field is R/O, and set to wrong 0x200 value */
  27 static void bcma_pcie2_fixup_class(struct pci_dev *dev)
  28 {
  29         dev->class = PCI_CLASS_BRIDGE_PCI << 8;
  30 }
  31 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class);
  32 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class);
  33
  34 static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  35 {
  36         struct pci_sys_data *sys = dev->sysdata;
  37         struct iproc_pcie *pcie = sys->private_data;
  38         struct bcma_device *bdev = container_of(pcie->dev, struct bcma_device, dev);
  39
  40         return bcma_core_irq(bdev, 5);
  41 }
  42
  43 static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
  44 {
  45         struct iproc_pcie *pcie;
  46         LIST_HEAD(res);
  47         struct resource res_mem;
  48         int ret;
  49
  50         pcie = devm_kzalloc(&bdev->dev, sizeof(*pcie), GFP_KERNEL);
  51         if (!pcie)
  52                 return -ENOMEM;
  53
  54         pcie->dev = &bdev->dev;
  55         bcma_set_drvdata(bdev, pcie);
  56
  57         pcie->base = bdev->io_addr;
  58
  59         res_mem.start = bdev->addr_s[0];
  60         res_mem.end = bdev->addr_s[0] + SZ_128M - 1;
  61         res_mem.name = "PCIe MEM space";
  62         res_mem.flags = IORESOURCE_MEM;
  63         pci_add_resource(&res, &res_mem);
  64
  65         pcie->map_irq = iproc_pcie_bcma_map_irq;
  66
  67         ret = iproc_pcie_setup(pcie, &res);
  68         if (ret)
  69                 dev_err(pcie->dev, "PCIe controller setup failed\n");
  70
  71         pci_free_resource_list(&res);
  72
  73         return ret;
  74 }
  75
  76 static void iproc_pcie_bcma_remove(struct bcma_device *bdev)
  77 {
  78         struct iproc_pcie *pcie = bcma_get_drvdata(bdev);
  79
  80         iproc_pcie_remove(pcie);
  81 }
  82
  83 static const struct bcma_device_id iproc_pcie_bcma_table[] = {
  84         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
  85         {},
  86 };
  87 MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table);
  88
  89 static struct bcma_driver iproc_pcie_bcma_driver = {
  90         .name           = KBUILD_MODNAME,
  91         .id_table       = iproc_pcie_bcma_table,
  92         .probe          = iproc_pcie_bcma_probe,
  93         .remove         = iproc_pcie_bcma_remove,
  94 };
  95
  96 static int __init iproc_pcie_bcma_init(void)
  97 {
  98         return bcma_driver_register(&iproc_pcie_bcma_driver);
  99 }
 100 module_init(iproc_pcie_bcma_init);
 101
 102 static void __exit iproc_pcie_bcma_exit(void)
 103 {
 104         bcma_driver_unregister(&iproc_pcie_bcma_driver);
 105 }
 106 module_exit(iproc_pcie_bcma_exit);
 107
 108 MODULE_AUTHOR("Hauke Mehrtens");
 109 MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
 110 MODULE_LICENSE("GPL v2");