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404349c5c8
The iProc PCIe driver is currently using type IPROC_PCIE_PAXB for the following SoCs: NS, NSP, Cygnus, NS2, and Pegasus. In fact, the BCMA-based NS uses a legacy PAXB controller that is slightly different from the PAXB controller used in the rest of SoCs, e.g., some registers are missing and it does not require software configuration of outbound/inbound address mapping. Add a new type, IPROC_PCIE_PAXB_BCMA, to allow us to properly support the BCMA-based NS along with other iProc-based SoCs going forward. Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com>
119 lines
3.1 KiB
C
119 lines
3.1 KiB
C
/*
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* Copyright (C) 2015 Broadcom Corporation
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* Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/phy/phy.h>
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#include <linux/bcma/bcma.h>
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#include <linux/ioport.h>
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#include "pcie-iproc.h"
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/* NS: CLASS field is R/O, and set to wrong 0x200 value */
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static void bcma_pcie2_fixup_class(struct pci_dev *dev)
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{
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dev->class = PCI_CLASS_BRIDGE_PCI << 8;
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}
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DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class);
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DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class);
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static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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struct pci_sys_data *sys = dev->sysdata;
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struct iproc_pcie *pcie = sys->private_data;
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struct bcma_device *bdev = container_of(pcie->dev, struct bcma_device, dev);
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return bcma_core_irq(bdev, 5);
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}
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static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
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{
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struct device *dev = &bdev->dev;
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struct iproc_pcie *pcie;
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LIST_HEAD(res);
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struct resource res_mem;
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int ret;
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pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
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if (!pcie)
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return -ENOMEM;
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pcie->dev = dev;
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pcie->type = IPROC_PCIE_PAXB_BCMA;
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pcie->base = bdev->io_addr;
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if (!pcie->base) {
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dev_err(dev, "no controller registers\n");
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return -ENOMEM;
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}
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pcie->base_addr = bdev->addr;
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res_mem.start = bdev->addr_s[0];
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res_mem.end = bdev->addr_s[0] + SZ_128M - 1;
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res_mem.name = "PCIe MEM space";
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res_mem.flags = IORESOURCE_MEM;
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pci_add_resource(&res, &res_mem);
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pcie->map_irq = iproc_pcie_bcma_map_irq;
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ret = iproc_pcie_setup(pcie, &res);
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if (ret)
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dev_err(dev, "PCIe controller setup failed\n");
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pci_free_resource_list(&res);
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bcma_set_drvdata(bdev, pcie);
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return ret;
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}
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static void iproc_pcie_bcma_remove(struct bcma_device *bdev)
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{
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struct iproc_pcie *pcie = bcma_get_drvdata(bdev);
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iproc_pcie_remove(pcie);
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}
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static const struct bcma_device_id iproc_pcie_bcma_table[] = {
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BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
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{},
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};
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MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table);
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static struct bcma_driver iproc_pcie_bcma_driver = {
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.name = KBUILD_MODNAME,
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.id_table = iproc_pcie_bcma_table,
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.probe = iproc_pcie_bcma_probe,
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.remove = iproc_pcie_bcma_remove,
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};
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static int __init iproc_pcie_bcma_init(void)
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{
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return bcma_driver_register(&iproc_pcie_bcma_driver);
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}
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module_init(iproc_pcie_bcma_init);
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static void __exit iproc_pcie_bcma_exit(void)
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{
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bcma_driver_unregister(&iproc_pcie_bcma_driver);
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}
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module_exit(iproc_pcie_bcma_exit);
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MODULE_AUTHOR("Hauke Mehrtens");
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MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
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MODULE_LICENSE("GPL v2");
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