// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2015 Broadcom Corporation
 * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
 */

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/phy/phy.h>
#include <linux/bcma/bcma.h>
#include <linux/ioport.h>

#include "pcie-iproc.h"


/* NS: CLASS field is R/O, and set to wrong 0x200 value */
static void bcma_pcie2_fixup_class(struct pci_dev *dev)
{
        dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL;
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class);

static int iproc_bcma_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
        struct iproc_pcie *pcie = dev->sysdata;
        struct bcma_device *bdev = container_of(pcie->dev, struct bcma_device, dev);

        return bcma_core_irq(bdev, 5);
}

static int iproc_bcma_pcie_probe(struct bcma_device *bdev)
{
        struct device *dev = &bdev->dev;
        struct iproc_pcie *pcie;
        struct pci_host_bridge *bridge;
        int ret;

        bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
        if (!bridge)
                return -ENOMEM;

        pcie = pci_host_bridge_priv(bridge);

        pcie->dev = dev;

        pcie->type = IPROC_PCIE_PAXB_BCMA;
        pcie->base = bdev->io_addr;
        if (!pcie->base) {
                dev_err(dev, "no controller registers\n");
                return -ENOMEM;
        }

        pcie->base_addr = bdev->addr;

        pcie->mem.start = bdev->addr_s[0];
        pcie->mem.end = bdev->addr_s[0] + SZ_128M - 1;
        pcie->mem.name = "PCIe MEM space";
        pcie->mem.flags = IORESOURCE_MEM;
        pci_add_resource(&bridge->windows, &pcie->mem);
        ret = devm_request_pci_bus_resources(dev, &bridge->windows);
        if (ret)
                return ret;

        pcie->map_irq = iproc_bcma_pcie_map_irq;

        bcma_set_drvdata(bdev, pcie);

        return iproc_pcie_setup(pcie, &bridge->windows);
}

static void iproc_bcma_pcie_remove(struct bcma_device *bdev)
{
        struct iproc_pcie *pcie = bcma_get_drvdata(bdev);

        iproc_pcie_remove(pcie);
}

static const struct bcma_device_id iproc_bcma_pcie_table[] = {
        BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
        {},
};
MODULE_DEVICE_TABLE(bcma, iproc_bcma_pcie_table);

static struct bcma_driver iproc_bcma_pcie_driver = {
        .name           = KBUILD_MODNAME,
        .id_table       = iproc_bcma_pcie_table,
        .probe          = iproc_bcma_pcie_probe,
        .remove         = iproc_bcma_pcie_remove,
};
module_bcma_driver(iproc_bcma_pcie_driver);

MODULE_AUTHOR("Hauke Mehrtens");
MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
MODULE_LICENSE("GPL v2");