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 device *dev = &bdev->dev;
  46         struct iproc_pcie *pcie;
  47         LIST_HEAD(resources);
  48         int ret;
  49
  50         pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
  51         if (!pcie)
  52                 return -ENOMEM;
  53
  54         pcie->dev = dev;
  55
  56         pcie->type = IPROC_PCIE_PAXB_BCMA;
  57         pcie->base = bdev->io_addr;
  58         if (!pcie->base) {
  59                 dev_err(dev, "no controller registers\n");
  60                 return -ENOMEM;
  61         }
  62
  63         pcie->base_addr = bdev->addr;
  64
  65         pcie->mem.start = bdev->addr_s[0];
  66         pcie->mem.end = bdev->addr_s[0] + SZ_128M - 1;
  67         pcie->mem.name = "PCIe MEM space";
  68         pcie->mem.flags = IORESOURCE_MEM;
  69         pci_add_resource(&resources, &pcie->mem);
  70
  71         pcie->map_irq = iproc_pcie_bcma_map_irq;
  72
  73         ret = iproc_pcie_setup(pcie, &resources);
  74         if (ret) {
  75                 dev_err(dev, "PCIe controller setup failed\n");
  76                 pci_free_resource_list(&resources);
  77                 return ret;
  78         }
  79
  80         bcma_set_drvdata(bdev, pcie);
  81         return 0;
  82 }
  83
  84 static void iproc_pcie_bcma_remove(struct bcma_device *bdev)
  85 {
  86         struct iproc_pcie *pcie = bcma_get_drvdata(bdev);
  87
  88         iproc_pcie_remove(pcie);
  89 }
  90
  91 static const struct bcma_device_id iproc_pcie_bcma_table[] = {
  92         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
  93         {},
  94 };
  95 MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table);
  96
  97 static struct bcma_driver iproc_pcie_bcma_driver = {
  98         .name           = KBUILD_MODNAME,
  99         .id_table       = iproc_pcie_bcma_table,
 100         .probe          = iproc_pcie_bcma_probe,
 101         .remove         = iproc_pcie_bcma_remove,
 102 };
 103
 104 static int __init iproc_pcie_bcma_init(void)
 105 {
 106         return bcma_driver_register(&iproc_pcie_bcma_driver);
 107 }
 108 module_init(iproc_pcie_bcma_init);
 109
 110 static void __exit iproc_pcie_bcma_exit(void)
 111 {
 112         bcma_driver_unregister(&iproc_pcie_bcma_driver);
 113 }
 114 module_exit(iproc_pcie_bcma_exit);
 115
 116 MODULE_AUTHOR("Hauke Mehrtens");
 117 MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
 118 MODULE_LICENSE("GPL v2");