/** * dwc3-pci.c - PCI Specific glue layer * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com * * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/platform_device.h> #include "core.h" /* FIXME define these in <linux/pci_ids.h> */ #define PCI_VENDOR_ID_SYNOPSYS 0x16c3 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd struct dwc3_pci { struct device *dev; struct platform_device *dwc3; }; static int __devinit dwc3_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) { struct resource res[2]; struct platform_device *dwc3; struct dwc3_pci *glue; int ret = -ENOMEM; int devid; struct device *dev = &pci->dev; glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(dev, "not enough memory\n"); return -ENOMEM; } glue->dev = dev; ret = pci_enable_device(pci); if (ret) { dev_err(dev, "failed to enable pci device\n"); return -ENODEV; } pci_set_power_state(pci, PCI_D0); pci_set_master(pci); devid = dwc3_get_device_id(); if (devid < 0) { ret = -ENOMEM; goto err1; } dwc3 = platform_device_alloc("dwc3", devid); if (!dwc3) { dev_err(dev, "couldn't allocate dwc3 device\n"); goto err1; } memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); res[0].start = pci_resource_start(pci, 0); res[0].end = pci_resource_end(pci, 0); res[0].name = "dwc_usb3"; res[0].flags = IORESOURCE_MEM; res[1].start = pci->irq; res[1].name = "dwc_usb3"; res[1].flags = IORESOURCE_IRQ; ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc3 device\n"); goto err2; } pci_set_drvdata(pci, glue); dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); dwc3->dev.dma_mask = dev->dma_mask; dwc3->dev.dma_parms = dev->dma_parms; dwc3->dev.parent = dev; glue->dwc3 = dwc3; ret = platform_device_add(dwc3); if (ret) { dev_err(dev, "failed to register dwc3 device\n"); goto err3; } return 0; err3: pci_set_drvdata(pci, NULL); platform_device_put(dwc3); err2: dwc3_put_device_id(devid); err1: pci_disable_device(pci); return ret; } static void __devexit dwc3_pci_remove(struct pci_dev *pci) { struct dwc3_pci *glue = pci_get_drvdata(pci); dwc3_put_device_id(glue->dwc3->id); platform_device_unregister(glue->dwc3); pci_set_drvdata(pci, NULL); pci_disable_device(pci); } static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = { { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), }, { } /* Terminating Entry */ }; MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); static struct pci_driver dwc3_pci_driver = { .name = "dwc3-pci", .id_table = dwc3_pci_id_table, .probe = dwc3_pci_probe, .remove = __devexit_p(dwc3_pci_remove), }; MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); static int __devinit dwc3_pci_init(void) { return pci_register_driver(&dwc3_pci_driver); } module_init(dwc3_pci_init); static void __exit dwc3_pci_exit(void) { pci_unregister_driver(&dwc3_pci_driver); } module_exit(dwc3_pci_exit);