1/**
2 * dwc3-pci.c - PCI Specific glue layer
3 *
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
5 *
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions, and the following disclaimer,
14 *    without modification.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The names of the above-listed copyright holders may not be used
19 *    to endorse or promote products derived from this software without
20 *    specific prior written permission.
21 *
22 * ALTERNATIVELY, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2, as published by the Free
24 * Software Foundation.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <linux/kernel.h>
40#include <linux/module.h>
41#include <linux/slab.h>
42#include <linux/pci.h>
43#include <linux/platform_device.h>
44
45#include "core.h"
46
47/* FIXME define these in <linux/pci_ids.h> */
48#define PCI_VENDOR_ID_SYNOPSYS		0x16c3
49#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3	0xabcd
50
51struct dwc3_pci {
52	struct device		*dev;
53	struct platform_device	*dwc3;
54};
55
56static int __devinit dwc3_pci_probe(struct pci_dev *pci,
57		const struct pci_device_id *id)
58{
59	struct resource		res[2];
60	struct platform_device	*dwc3;
61	struct dwc3_pci		*glue;
62	int			ret = -ENOMEM;
63	int			devid;
64	struct device		*dev = &pci->dev;
65
66	glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
67	if (!glue) {
68		dev_err(dev, "not enough memory\n");
69		return -ENOMEM;
70	}
71
72	glue->dev = dev;
73
74	ret = pci_enable_device(pci);
75	if (ret) {
76		dev_err(dev, "failed to enable pci device\n");
77		return -ENODEV;
78	}
79
80	pci_set_power_state(pci, PCI_D0);
81	pci_set_master(pci);
82
83	devid = dwc3_get_device_id();
84	if (devid < 0) {
85		ret = -ENOMEM;
86		goto err1;
87	}
88
89	dwc3 = platform_device_alloc("dwc3", devid);
90	if (!dwc3) {
91		dev_err(dev, "couldn't allocate dwc3 device\n");
92		ret = -ENOMEM;
93		goto err1;
94	}
95
96	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
97
98	res[0].start	= pci_resource_start(pci, 0);
99	res[0].end	= pci_resource_end(pci, 0);
100	res[0].name	= "dwc_usb3";
101	res[0].flags	= IORESOURCE_MEM;
102
103	res[1].start	= pci->irq;
104	res[1].name	= "dwc_usb3";
105	res[1].flags	= IORESOURCE_IRQ;
106
107	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
108	if (ret) {
109		dev_err(dev, "couldn't add resources to dwc3 device\n");
110		goto err2;
111	}
112
113	pci_set_drvdata(pci, glue);
114
115	dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
116
117	dwc3->dev.dma_mask = dev->dma_mask;
118	dwc3->dev.dma_parms = dev->dma_parms;
119	dwc3->dev.parent = dev;
120	glue->dwc3 = dwc3;
121
122	ret = platform_device_add(dwc3);
123	if (ret) {
124		dev_err(dev, "failed to register dwc3 device\n");
125		goto err3;
126	}
127
128	return 0;
129
130err3:
131	pci_set_drvdata(pci, NULL);
132	platform_device_put(dwc3);
133
134err2:
135	dwc3_put_device_id(devid);
136
137err1:
138	pci_disable_device(pci);
139
140	return ret;
141}
142
143static void __devexit dwc3_pci_remove(struct pci_dev *pci)
144{
145	struct dwc3_pci	*glue = pci_get_drvdata(pci);
146
147	dwc3_put_device_id(glue->dwc3->id);
148	platform_device_unregister(glue->dwc3);
149	pci_set_drvdata(pci, NULL);
150	pci_disable_device(pci);
151}
152
153static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
154	{
155		PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
156				PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
157	},
158	{  }	/* Terminating Entry */
159};
160MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
161
162static struct pci_driver dwc3_pci_driver = {
163	.name		= "dwc3-pci",
164	.id_table	= dwc3_pci_id_table,
165	.probe		= dwc3_pci_probe,
166	.remove		= __devexit_p(dwc3_pci_remove),
167};
168
169MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
170MODULE_LICENSE("Dual BSD/GPL");
171MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
172
173module_pci_driver(dwc3_pci_driver);
174