[linux-2.6-block.git] / drivers / usb / host / isp1760-if.c

/*
 * Glue code for the ISP1760 driver and bus
 * Currently there is support for
 * - OpenFirmware
 * - PCI
 *
 * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de>
 *
 */

#include <linux/usb.h>
#include <linux/io.h>

#include "../core/hcd.h"
#include "isp1760-hcd.h"

#ifdef CONFIG_PPC_OF
#include <linux/of.h>
#include <linux/of_platform.h>
#endif

#ifdef CONFIG_PCI
#include <linux/pci.h>
#endif

#ifdef CONFIG_PPC_OF
static int of_isp1760_probe(struct of_device *dev,
		const struct of_device_id *match)
{
	struct usb_hcd *hcd;
	struct device_node *dp = dev->node;
	struct resource *res;
	struct resource memory;
	struct of_irq oirq;
	int virq;
	u64 res_len;
	int ret;
	const unsigned int *prop;
	unsigned int devflags = 0;

	ret = of_address_to_resource(dp, 0, &memory);
	if (ret)
		return -ENXIO;

	res = request_mem_region(memory.start, memory.end - memory.start + 1,
			dev_name(&dev->dev));
	if (!res)
		return -EBUSY;

	res_len = memory.end - memory.start + 1;

	if (of_irq_map_one(dp, 0, &oirq)) {
		ret = -ENODEV;
		goto release_reg;
	}

	virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
			oirq.size);

	if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
		devflags |= ISP1760_FLAG_ISP1761;

	if (of_get_property(dp, "port1-disable", NULL) != NULL)
		devflags |= ISP1760_FLAG_PORT1_DIS;

	/* Some systems wire up only 16 of the 32 data lines */
	prop = of_get_property(dp, "bus-width", NULL);
	if (prop && *prop == 16)
		devflags |= ISP1760_FLAG_BUS_WIDTH_16;

	if (of_get_property(dp, "port1-otg", NULL) != NULL)
		devflags |= ISP1760_FLAG_OTG_EN;

	if (of_get_property(dp, "analog-oc", NULL) != NULL)
		devflags |= ISP1760_FLAG_ANALOG_OC;

	if (of_get_property(dp, "dack-polarity", NULL) != NULL)
		devflags |= ISP1760_FLAG_DACK_POL_HIGH;

	if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
		devflags |= ISP1760_FLAG_DREQ_POL_HIGH;

	hcd = isp1760_register(memory.start, res_len, virq,
		IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
		devflags);
	if (IS_ERR(hcd)) {
		ret = PTR_ERR(hcd);
		goto release_reg;
	}

	dev_set_drvdata(&dev->dev, hcd);
	return ret;

release_reg:
	release_mem_region(memory.start, memory.end - memory.start + 1);
	return ret;
}

static int of_isp1760_remove(struct of_device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(&dev->dev);

	dev_set_drvdata(&dev->dev, NULL);

	usb_remove_hcd(hcd);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
	return 0;
}

static struct of_device_id of_isp1760_match[] = {
	{
		.compatible = "nxp,usb-isp1760",
	},
	{
		.compatible = "nxp,usb-isp1761",
	},
	{ },
};
MODULE_DEVICE_TABLE(of, of_isp1760_match);

static struct of_platform_driver isp1760_of_driver = {
	.name           = "nxp-isp1760",
	.match_table    = of_isp1760_match,
	.probe          = of_isp1760_probe,
	.remove         = of_isp1760_remove,
};
#endif

#ifdef CONFIG_PCI
static int __devinit isp1761_pci_probe(struct pci_dev *dev,
		const struct pci_device_id *id)
{
	u8 latency, limit;
	__u32 reg_data;
	int retry_count;
	struct usb_hcd *hcd;
	unsigned int devflags = 0;
	int ret_status = 0;

	resource_size_t pci_mem_phy0;
	resource_size_t memlength;

	u8 __iomem *chip_addr;
	u8 __iomem *iobase;
	resource_size_t nxp_pci_io_base;
	resource_size_t iolength;

	if (usb_disabled())
		return -ENODEV;

	if (pci_enable_device(dev) < 0)
		return -ENODEV;

	if (!dev->irq)
		return -ENODEV;

	/* Grab the PLX PCI mem maped port start address we need  */
	nxp_pci_io_base = pci_resource_start(dev, 0);
	iolength = pci_resource_len(dev, 0);

	if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) {
		printk(KERN_ERR "request region #1\n");
		return -EBUSY;
	}

	iobase = ioremap_nocache(nxp_pci_io_base, iolength);
	if (!iobase) {
		printk(KERN_ERR "ioremap #1\n");
		ret_status = -ENOMEM;
		goto cleanup1;
	}
	/* Grab the PLX PCI shared memory of the ISP 1761 we need  */
	pci_mem_phy0 = pci_resource_start(dev, 3);
	memlength = pci_resource_len(dev, 3);
	if (memlength < 0xffff) {
		printk(KERN_ERR "memory length for this resource is wrong\n");
		ret_status = -ENOMEM;
		goto cleanup2;
	}

	if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) {
		printk(KERN_ERR "host controller already in use\n");
		ret_status = -EBUSY;
		goto cleanup2;
	}

	/* map available memory */
	chip_addr = ioremap_nocache(pci_mem_phy0,memlength);
	if (!chip_addr) {
		printk(KERN_ERR "Error ioremap failed\n");
		ret_status = -ENOMEM;
		goto cleanup3;
	}

	/* bad pci latencies can contribute to overruns */
	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency);
	if (latency) {
		pci_read_config_byte(dev, PCI_MAX_LAT, &limit);
		if (limit && limit < latency)
			pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit);
	}

	/* Try to check whether we can access Scratch Register of
	 * Host Controller or not. The initial PCI access is retried until
	 * local init for the PCI bridge is completed
	 */
	retry_count = 20;
	reg_data = 0;
	while ((reg_data != 0xFACE) && retry_count) {
		/*by default host is in 16bit mode, so
		 * io operations at this stage must be 16 bit
		 * */
		writel(0xface, chip_addr + HC_SCRATCH_REG);
		udelay(100);
		reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff;
		retry_count--;
	}

	iounmap(chip_addr);

	/* Host Controller presence is detected by writing to scratch register
	 * and reading back and checking the contents are same or not
	 */
	if (reg_data != 0xFACE) {
		dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data);
		ret_status = -ENOMEM;
		goto cleanup3;
	}

	pci_set_master(dev);

	/* configure PLX PCI chip to pass interrupts */
#define PLX_INT_CSR_REG 0x68
	reg_data = readl(iobase + PLX_INT_CSR_REG);
	reg_data |= 0x900;
	writel(reg_data, iobase + PLX_INT_CSR_REG);

	dev->dev.dma_mask = NULL;
	hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
		IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
		devflags);
	if (IS_ERR(hcd)) {
		ret_status = -ENODEV;
		goto cleanup3;
	}

	/* done with PLX IO access */
	iounmap(iobase);
	release_mem_region(nxp_pci_io_base, iolength);

	pci_set_drvdata(dev, hcd);
	return 0;

cleanup3:
	release_mem_region(pci_mem_phy0, memlength);
cleanup2:
	iounmap(iobase);
cleanup1:
	release_mem_region(nxp_pci_io_base, iolength);
	return ret_status;
}

static void isp1761_pci_remove(struct pci_dev *dev)
{
	struct usb_hcd *hcd;

	hcd = pci_get_drvdata(dev);

	usb_remove_hcd(hcd);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);

	pci_disable_device(dev);
}

static void isp1761_pci_shutdown(struct pci_dev *dev)
{
	printk(KERN_ERR "ips1761_pci_shutdown\n");
}

static const struct pci_device_id isp1760_plx [] = {
	{
		.class          = PCI_CLASS_BRIDGE_OTHER << 8,
		.class_mask     = ~0,
		.vendor		= PCI_VENDOR_ID_PLX,
		.device		= 0x5406,
		.subvendor	= PCI_VENDOR_ID_PLX,
		.subdevice	= 0x9054,
	},
	{ }
};
MODULE_DEVICE_TABLE(pci, isp1760_plx);

static struct pci_driver isp1761_pci_driver = {
	.name =         "isp1760",
	.id_table =     isp1760_plx,
	.probe =        isp1761_pci_probe,
	.remove =       isp1761_pci_remove,
	.shutdown =     isp1761_pci_shutdown,
};
#endif

static int __init isp1760_init(void)
{
	int ret;

	init_kmem_once();

#ifdef CONFIG_PPC_OF
	ret = of_register_platform_driver(&isp1760_of_driver);
	if (ret) {
		deinit_kmem_cache();
		return ret;
	}
#endif
#ifdef CONFIG_PCI
	ret = pci_register_driver(&isp1761_pci_driver);
	if (ret)
		goto unreg_of;
#endif
	return ret;

#ifdef CONFIG_PCI
unreg_of:
#endif
#ifdef CONFIG_PPC_OF
	of_unregister_platform_driver(&isp1760_of_driver);
#endif
	deinit_kmem_cache();
	return ret;
}
module_init(isp1760_init);

static void __exit isp1760_exit(void)
{
#ifdef CONFIG_PPC_OF
	of_unregister_platform_driver(&isp1760_of_driver);
#endif
#ifdef CONFIG_PCI
	pci_unregister_driver(&isp1761_pci_driver);
#endif
	deinit_kmem_cache();
}
module_exit(isp1760_exit);
Commit	Line	Data
db11e47d SS	1	/*
	2	* Glue code for the ISP1760 driver and bus
	3	* Currently there is support for
	4	* - OpenFirmware
	5	* - PCI
	6	*
	7	* (c) 2007 Sebastian Siewior <bigeasy@linutronix.de>
	8	*
	9	*/
	10
	11	#include <linux/usb.h>
	12	#include <linux/io.h>
	13
	14	#include "../core/hcd.h"
	15	#include "isp1760-hcd.h"
	16
ff30bf1c	17	#ifdef CONFIG_PPC_OF
db11e47d SS	18	#include <linux/of.h>
	19	#include <linux/of_platform.h>
	20	#endif
	21
ff30bf1c	22	#ifdef CONFIG_PCI
db11e47d SS	23	#include <linux/pci.h>
	24	#endif
	25
ff30bf1c	26	#ifdef CONFIG_PPC_OF
db11e47d SS	27	static int of_isp1760_probe(struct of_device *dev,
	28	const struct of_device_id *match)
	29	{
	30	struct usb_hcd *hcd;
	31	struct device_node *dp = dev->node;
	32	struct resource *res;
	33	struct resource memory;
	34	struct of_irq oirq;
	35	int virq;
	36	u64 res_len;
	37	int ret;
3faefc88 NC	38	const unsigned int *prop;
3faefc88 NC	39	unsigned int devflags = 0;
db11e47d SS	40
	41	ret = of_address_to_resource(dp, 0, &memory);
	42	if (ret)
	43	return -ENXIO;
	44
	45	res = request_mem_region(memory.start, memory.end - memory.start + 1,
7071a3ce	46	dev_name(&dev->dev));
db11e47d SS	47	if (!res)
	48	return -EBUSY;
	49
	50	res_len = memory.end - memory.start + 1;
	51
	52	if (of_irq_map_one(dp, 0, &oirq)) {
	53	ret = -ENODEV;
	54	goto release_reg;
	55	}
	56
	57	virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
	58	oirq.size);
	59
3faefc88 NC	60	if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
	61	devflags \|= ISP1760_FLAG_ISP1761;
	62
	63	if (of_get_property(dp, "port1-disable", NULL) != NULL)
	64	devflags \|= ISP1760_FLAG_PORT1_DIS;
	65
	66	/* Some systems wire up only 16 of the 32 data lines */
	67	prop = of_get_property(dp, "bus-width", NULL);
	68	if (prop && *prop == 16)
	69	devflags \|= ISP1760_FLAG_BUS_WIDTH_16;
	70
	71	if (of_get_property(dp, "port1-otg", NULL) != NULL)
	72	devflags \|= ISP1760_FLAG_OTG_EN;
	73
	74	if (of_get_property(dp, "analog-oc", NULL) != NULL)
	75	devflags \|= ISP1760_FLAG_ANALOG_OC;
	76
	77	if (of_get_property(dp, "dack-polarity", NULL) != NULL)
	78	devflags \|= ISP1760_FLAG_DACK_POL_HIGH;
	79
	80	if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
	81	devflags \|= ISP1760_FLAG_DREQ_POL_HIGH;
	82
db11e47d	83	hcd = isp1760_register(memory.start, res_len, virq,
3faefc88 NC	84	IRQF_SHARED \| IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
3faefc88 NC	85	devflags);
db11e47d SS	86	if (IS_ERR(hcd)) {
	87	ret = PTR_ERR(hcd);
	88	goto release_reg;
	89	}
	90
	91	dev_set_drvdata(&dev->dev, hcd);
	92	return ret;
	93
	94	release_reg:
	95	release_mem_region(memory.start, memory.end - memory.start + 1);
	96	return ret;
	97	}
	98
	99	static int of_isp1760_remove(struct of_device *dev)
	100	{
	101	struct usb_hcd *hcd = dev_get_drvdata(&dev->dev);
	102
	103	dev_set_drvdata(&dev->dev, NULL);
	104
	105	usb_remove_hcd(hcd);
	106	iounmap(hcd->regs);
	107	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	108	usb_put_hcd(hcd);
	109	return 0;
	110	}
	111
	112	static struct of_device_id of_isp1760_match[] = {
	113	{
	114	.compatible = "nxp,usb-isp1760",
	115	},
3faefc88 NC	116	{
	117	.compatible = "nxp,usb-isp1761",
	118	},
db11e47d SS	119	{ },
	120	};
	121	MODULE_DEVICE_TABLE(of, of_isp1760_match);
	122
	123	static struct of_platform_driver isp1760_of_driver = {
	124	.name = "nxp-isp1760",
	125	.match_table = of_isp1760_match,
	126	.probe = of_isp1760_probe,
	127	.remove = of_isp1760_remove,
	128	};
	129	#endif
	130
ff30bf1c	131	#ifdef CONFIG_PCI
db11e47d SS	132	static int __devinit isp1761_pci_probe(struct pci_dev *dev,
	133	const struct pci_device_id *id)
	134	{
	135	u8 latency, limit;
	136	__u32 reg_data;
	137	int retry_count;
db11e47d	138	struct usb_hcd *hcd;
3faefc88	139	unsigned int devflags = 0;
6013bbba KB	140	int ret_status = 0;
	141
	142	resource_size_t pci_mem_phy0;
	143	resource_size_t memlength;
	144
	145	u8 __iomem *chip_addr;
	146	u8 __iomem *iobase;
	147	resource_size_t nxp_pci_io_base;
	148	resource_size_t iolength;
db11e47d SS	149
	150	if (usb_disabled())
	151	return -ENODEV;
	152
	153	if (pci_enable_device(dev) < 0)
	154	return -ENODEV;
	155
	156	if (!dev->irq)
	157	return -ENODEV;
	158
	159	/* Grab the PLX PCI mem maped port start address we need */
	160	nxp_pci_io_base = pci_resource_start(dev, 0);
	161	iolength = pci_resource_len(dev, 0);
	162
	163	if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) {
	164	printk(KERN_ERR "request region #1\n");
	165	return -EBUSY;
	166	}
	167
	168	iobase = ioremap_nocache(nxp_pci_io_base, iolength);
	169	if (!iobase) {
	170	printk(KERN_ERR "ioremap #1\n");
6013bbba KB	171	ret_status = -ENOMEM;
6013bbba KB	172	goto cleanup1;
db11e47d SS	173	}
	174	/* Grab the PLX PCI shared memory of the ISP 1761 we need */
	175	pci_mem_phy0 = pci_resource_start(dev, 3);
6013bbba KB	176	memlength = pci_resource_len(dev, 3);
	177	if (memlength < 0xffff) {
	178	printk(KERN_ERR "memory length for this resource is wrong\n");
	179	ret_status = -ENOMEM;
	180	goto cleanup2;
db11e47d SS	181	}
db11e47d SS	182
6013bbba	183	if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) {
db11e47d	184	printk(KERN_ERR "host controller already in use\n");
6013bbba KB	185	ret_status = -EBUSY;
	186	goto cleanup2;
	187	}
	188
	189	/* map available memory */
	190	chip_addr = ioremap_nocache(pci_mem_phy0,memlength);
	191	if (!chip_addr) {
	192	printk(KERN_ERR "Error ioremap failed\n");
	193	ret_status = -ENOMEM;
	194	goto cleanup3;
db11e47d SS	195	}
	196
	197	/* bad pci latencies can contribute to overruns */
	198	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency);
	199	if (latency) {
	200	pci_read_config_byte(dev, PCI_MAX_LAT, &limit);
	201	if (limit && limit < latency)
	202	pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit);
	203	}
	204
	205	/* Try to check whether we can access Scratch Register of
	206	* Host Controller or not. The initial PCI access is retried until
	207	* local init for the PCI bridge is completed
	208	*/
	209	retry_count = 20;
	210	reg_data = 0;
	211	while ((reg_data != 0xFACE) && retry_count) {
	212	/*by default host is in 16bit mode, so
	213	* io operations at this stage must be 16 bit
	214	* */
	215	writel(0xface, chip_addr + HC_SCRATCH_REG);
	216	udelay(100);
6013bbba	217	reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff;
db11e47d SS	218	retry_count--;
	219	}
	220
6013bbba KB	221	iounmap(chip_addr);
6013bbba KB	222
db11e47d SS	223	/* Host Controller presence is detected by writing to scratch register
	224	* and reading back and checking the contents are same or not
	225	*/
	226	if (reg_data != 0xFACE) {
802f389a	227	dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data);
6013bbba KB	228	ret_status = -ENOMEM;
6013bbba KB	229	goto cleanup3;
db11e47d SS	230	}
	231
	232	pci_set_master(dev);
	233
6013bbba KB	234	/* configure PLX PCI chip to pass interrupts */
	235	#define PLX_INT_CSR_REG 0x68
	236	reg_data = readl(iobase + PLX_INT_CSR_REG);
	237	reg_data \|= 0x900;
	238	writel(reg_data, iobase + PLX_INT_CSR_REG);
db11e47d SS	239
db11e47d SS	240	dev->dev.dma_mask = NULL;
6013bbba	241	hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
3faefc88 NC	242	IRQF_SHARED \| IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
3faefc88 NC	243	devflags);
6013bbba KB	244	if (IS_ERR(hcd)) {
	245	ret_status = -ENODEV;
	246	goto cleanup3;
ce5dee50	247	}
6013bbba KB	248
6013bbba KB	249	/* done with PLX IO access */
db11e47d	250	iounmap(iobase);
db11e47d	251	release_mem_region(nxp_pci_io_base, iolength);
6013bbba KB	252
	253	pci_set_drvdata(dev, hcd);
	254	return 0;
	255
	256	cleanup3:
	257	release_mem_region(pci_mem_phy0, memlength);
	258	cleanup2:
	259	iounmap(iobase);
	260	cleanup1:
	261	release_mem_region(nxp_pci_io_base, iolength);
	262	return ret_status;
db11e47d	263	}
6013bbba	264
db11e47d SS	265	static void isp1761_pci_remove(struct pci_dev *dev)
	266	{
	267	struct usb_hcd *hcd;
	268
	269	hcd = pci_get_drvdata(dev);
	270
	271	usb_remove_hcd(hcd);
	272	iounmap(hcd->regs);
	273	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	274	usb_put_hcd(hcd);
	275
	276	pci_disable_device(dev);
db11e47d SS	277	}
	278
	279	static void isp1761_pci_shutdown(struct pci_dev *dev)
	280	{
	281	printk(KERN_ERR "ips1761_pci_shutdown\n");
	282	}
	283
6c073568 SAS	284	static const struct pci_device_id isp1760_plx [] = {
	285	{
	286	.class = PCI_CLASS_BRIDGE_OTHER << 8,
	287	.class_mask = ~0,
	288	.vendor = PCI_VENDOR_ID_PLX,
	289	.device = 0x5406,
	290	.subvendor = PCI_VENDOR_ID_PLX,
	291	.subdevice = 0x9054,
	292	},
	293	{ }
db11e47d SS	294	};
	295	MODULE_DEVICE_TABLE(pci, isp1760_plx);
	296
	297	static struct pci_driver isp1761_pci_driver = {
	298	.name = "isp1760",
	299	.id_table = isp1760_plx,
	300	.probe = isp1761_pci_probe,
	301	.remove = isp1761_pci_remove,
	302	.shutdown = isp1761_pci_shutdown,
	303	};
	304	#endif
	305
	306	static int __init isp1760_init(void)
	307	{
ff30bf1c	308	int ret;
db11e47d SS	309
	310	init_kmem_once();
	311
ff30bf1c	312	#ifdef CONFIG_PPC_OF
db11e47d SS	313	ret = of_register_platform_driver(&isp1760_of_driver);
	314	if (ret) {
	315	deinit_kmem_cache();
	316	return ret;
	317	}
	318	#endif
ff30bf1c	319	#ifdef CONFIG_PCI
db11e47d SS	320	ret = pci_register_driver(&isp1761_pci_driver);
	321	if (ret)
	322	goto unreg_of;
	323	#endif
	324	return ret;
	325
ff30bf1c	326	#ifdef CONFIG_PCI
db11e47d SS	327	unreg_of:
db11e47d SS	328	#endif
ff30bf1c	329	#ifdef CONFIG_PPC_OF
db11e47d SS	330	of_unregister_platform_driver(&isp1760_of_driver);
	331	#endif
	332	deinit_kmem_cache();
	333	return ret;
	334	}
	335	module_init(isp1760_init);
	336
	337	static void __exit isp1760_exit(void)
	338	{
ff30bf1c	339	#ifdef CONFIG_PPC_OF
db11e47d SS	340	of_unregister_platform_driver(&isp1760_of_driver);
db11e47d SS	341	#endif
ff30bf1c	342	#ifdef CONFIG_PCI
db11e47d SS	343	pci_unregister_driver(&isp1761_pci_driver);
	344	#endif
	345	deinit_kmem_cache();
	346	}
	347	module_exit(isp1760_exit);