[mirror_ubuntu-bionic-kernel.git] / drivers / usb / host / ohci-ps3.c

// SPDX-License-Identifier: GPL-2.0
/*
 *  PS3 OHCI Host Controller driver
 *
 *  Copyright (C) 2006 Sony Computer Entertainment Inc.
 *  Copyright 2006 Sony Corp.
 */

#include <asm/firmware.h>
#include <asm/ps3.h>

static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
{
	struct ohci_hcd *ohci = hcd_to_ohci(hcd);

	ohci->flags |= OHCI_QUIRK_BE_MMIO;
	ohci_hcd_init(ohci);
	return ohci_init(ohci);
}

static int ps3_ohci_hc_start(struct usb_hcd *hcd)
{
	int result;
	struct ohci_hcd *ohci = hcd_to_ohci(hcd);

	/* Handle root hub init quirk in spider south bridge. */
	/* Also set PwrOn2PwrGood to 0x7f (254ms). */

	ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
		&ohci->regs->roothub.a);
	ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);

	result = ohci_run(ohci);

	if (result < 0) {
		dev_err(hcd->self.controller, "can't start %s\n",
			hcd->self.bus_name);
		ohci_stop(hcd);
	}

	return result;
}

static const struct hc_driver ps3_ohci_hc_driver = {
	.description		= hcd_name,
	.product_desc		= "PS3 OHCI Host Controller",
	.hcd_priv_size		= sizeof(struct ohci_hcd),
	.irq			= ohci_irq,
	.flags			= HCD_MEMORY | HCD_USB11,
	.reset			= ps3_ohci_hc_reset,
	.start			= ps3_ohci_hc_start,
	.stop			= ohci_stop,
	.shutdown		= ohci_shutdown,
	.urb_enqueue		= ohci_urb_enqueue,
	.urb_dequeue		= ohci_urb_dequeue,
	.endpoint_disable	= ohci_endpoint_disable,
	.get_frame_number	= ohci_get_frame,
	.hub_status_data	= ohci_hub_status_data,
	.hub_control		= ohci_hub_control,
	.start_port_reset	= ohci_start_port_reset,
#if defined(CONFIG_PM)
	.bus_suspend 		= ohci_bus_suspend,
	.bus_resume 		= ohci_bus_resume,
#endif
};

static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
{
	int result;
	struct usb_hcd *hcd;
	unsigned int virq;
	static u64 dummy_mask = DMA_BIT_MASK(32);

	if (usb_disabled()) {
		result = -ENODEV;
		goto fail_start;
	}

	result = ps3_open_hv_device(dev);

	if (result) {
		dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
			__func__, __LINE__, ps3_result(result));
		result = -EPERM;
		goto fail_open;
	}

	result = ps3_dma_region_create(dev->d_region);

	if (result) {
		dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
			"(%d)\n", __func__, __LINE__, result);
		BUG_ON("check region type");
		goto fail_dma_region;
	}

	result = ps3_mmio_region_create(dev->m_region);

	if (result) {
		dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
			__func__, __LINE__);
		result = -EPERM;
		goto fail_mmio_region;
	}

	dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
		__LINE__, dev->m_region->lpar_addr);

	result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);

	if (result) {
		dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
			__func__, __LINE__, virq);
		result = -EPERM;
		goto fail_irq;
	}

	dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */

	hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));

	if (!hcd) {
		dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
			__LINE__);
		result = -ENOMEM;
		goto fail_create_hcd;
	}

	hcd->rsrc_start = dev->m_region->lpar_addr;
	hcd->rsrc_len = dev->m_region->len;

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
		dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
			__func__, __LINE__);

	hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);

	if (!hcd->regs) {
		dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
			__LINE__);
		result = -EPERM;
		goto fail_ioremap;
	}

	dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
		(unsigned long)hcd->rsrc_start);
	dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
		(unsigned long)hcd->rsrc_len);
	dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
		(unsigned long)hcd->regs);
	dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
		(unsigned long)virq);

	ps3_system_bus_set_drvdata(dev, hcd);

	result = usb_add_hcd(hcd, virq, 0);

	if (result) {
		dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
			__func__, __LINE__, result);
		goto fail_add_hcd;
	}

	device_wakeup_enable(hcd->self.controller);
	return result;

fail_add_hcd:
	iounmap(hcd->regs);
fail_ioremap:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
fail_create_hcd:
	ps3_io_irq_destroy(virq);
fail_irq:
	ps3_free_mmio_region(dev->m_region);
fail_mmio_region:
	ps3_dma_region_free(dev->d_region);
fail_dma_region:
	ps3_close_hv_device(dev);
fail_open:
fail_start:
	return result;
}

static int ps3_ohci_remove(struct ps3_system_bus_device *dev)
{
	unsigned int tmp;
	struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);

	BUG_ON(!hcd);

	dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
	dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);

	tmp = hcd->irq;

	ohci_shutdown(hcd);
	usb_remove_hcd(hcd);

	ps3_system_bus_set_drvdata(dev, NULL);

	BUG_ON(!hcd->regs);
	iounmap(hcd->regs);

	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);

	ps3_io_irq_destroy(tmp);
	ps3_free_mmio_region(dev->m_region);

	ps3_dma_region_free(dev->d_region);
	ps3_close_hv_device(dev);

	return 0;
}

static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
{
	return firmware_has_feature(FW_FEATURE_PS3_LV1)
		? ps3_system_bus_driver_register(drv)
		: 0;
}

static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
{
	if (firmware_has_feature(FW_FEATURE_PS3_LV1))
		ps3_system_bus_driver_unregister(drv);
}

MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);

static struct ps3_system_bus_driver ps3_ohci_driver = {
	.core.name = "ps3-ohci-driver",
	.core.owner = THIS_MODULE,
	.match_id = PS3_MATCH_ID_OHCI,
	.probe = ps3_ohci_probe,
	.remove = ps3_ohci_remove,
	.shutdown = ps3_ohci_remove,
};
Commit	Line	Data
5fd54ace	1	// SPDX-License-Identifier: GPL-2.0
6a6c957e GL	2	/*
	3	* PS3 OHCI Host Controller driver
	4	*
	5	* Copyright (C) 2006 Sony Computer Entertainment Inc.
	6	* Copyright 2006 Sony Corp.
6a6c957e GL	7	*/
6a6c957e GL	8
7a4eb7fd	9	#include <asm/firmware.h>
6a6c957e GL	10	#include <asm/ps3.h>
	11
	12	static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
	13	{
	14	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	15
	16	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	17	ohci_hcd_init(ohci);
	18	return ohci_init(ohci);
	19	}
	20
41ac7b3a	21	static int ps3_ohci_hc_start(struct usb_hcd *hcd)
6a6c957e GL	22	{
	23	int result;
	24	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	25
	26	/* Handle root hub init quirk in spider south bridge. */
	27	/* Also set PwrOn2PwrGood to 0x7f (254ms). */
	28
	29	ohci_writel(ohci, 0x7f000000 \| RH_A_PSM \| RH_A_OCPM,
	30	&ohci->regs->roothub.a);
	31	ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
	32
	33	result = ohci_run(ohci);
	34
	35	if (result < 0) {
8ab60ea0 GKH	36	dev_err(hcd->self.controller, "can't start %s\n",
8ab60ea0 GKH	37	hcd->self.bus_name);
6a6c957e GL	38	ohci_stop(hcd);
	39	}
	40
	41	return result;
	42	}
	43
	44	static const struct hc_driver ps3_ohci_hc_driver = {
	45	.description = hcd_name,
	46	.product_desc = "PS3 OHCI Host Controller",
	47	.hcd_priv_size = sizeof(struct ohci_hcd),
	48	.irq = ohci_irq,
	49	.flags = HCD_MEMORY \| HCD_USB11,
	50	.reset = ps3_ohci_hc_reset,
	51	.start = ps3_ohci_hc_start,
	52	.stop = ohci_stop,
	53	.shutdown = ohci_shutdown,
	54	.urb_enqueue = ohci_urb_enqueue,
	55	.urb_dequeue = ohci_urb_dequeue,
	56	.endpoint_disable = ohci_endpoint_disable,
	57	.get_frame_number = ohci_get_frame,
	58	.hub_status_data = ohci_hub_status_data,
	59	.hub_control = ohci_hub_control,
6a6c957e GL	60	.start_port_reset = ohci_start_port_reset,
	61	#if defined(CONFIG_PM)
	62	.bus_suspend = ohci_bus_suspend,
	63	.bus_resume = ohci_bus_resume,
	64	#endif
	65	};
	66
41ac7b3a	67	static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
6a6c957e GL	68	{
	69	int result;
	70	struct usb_hcd *hcd;
	71	unsigned int virq;
284901a9	72	static u64 dummy_mask = DMA_BIT_MASK(32);
6a6c957e GL	73
	74	if (usb_disabled()) {
	75	result = -ENODEV;
	76	goto fail_start;
	77	}
	78
7a4eb7fd GL	79	result = ps3_open_hv_device(dev);
	80
	81	if (result) {
	82	dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
	83	__func__, __LINE__, ps3_result(result));
	84	result = -EPERM;
	85	goto fail_open;
	86	}
	87
	88	result = ps3_dma_region_create(dev->d_region);
	89
	90	if (result) {
	91	dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
	92	"(%d)\n", __func__, __LINE__, result);
	93	BUG_ON("check region type");
	94	goto fail_dma_region;
	95	}
	96
6a6c957e GL	97	result = ps3_mmio_region_create(dev->m_region);
	98
	99	if (result) {
	100	dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
	101	__func__, __LINE__);
	102	result = -EPERM;
7a4eb7fd	103	goto fail_mmio_region;
6a6c957e GL	104	}
	105
	106	dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
	107	__LINE__, dev->m_region->lpar_addr);
	108
dc4f60c2	109	result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
6a6c957e GL	110
	111	if (result) {
	112	dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
	113	__func__, __LINE__, virq);
	114	result = -EPERM;
	115	goto fail_irq;
	116	}
	117
6a6c957e GL	118	dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
6a6c957e GL	119
7071a3ce	120	hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
6a6c957e GL	121
	122	if (!hcd) {
	123	dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
	124	__LINE__);
	125	result = -ENOMEM;
	126	goto fail_create_hcd;
	127	}
	128
	129	hcd->rsrc_start = dev->m_region->lpar_addr;
	130	hcd->rsrc_len = dev->m_region->len;
7a4eb7fd GL	131
	132	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
	133	dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
	134	__func__, __LINE__);
	135
6a6c957e GL	136	hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
	137
	138	if (!hcd->regs) {
	139	dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
	140	__LINE__);
	141	result = -EPERM;
	142	goto fail_ioremap;
	143	}
	144
	145	dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
	146	(unsigned long)hcd->rsrc_start);
	147	dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__,
	148	(unsigned long)hcd->rsrc_len);
	149	dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__,
	150	(unsigned long)hcd->regs);
	151	dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__,
	152	(unsigned long)virq);
	153
03fa68c2	154	ps3_system_bus_set_drvdata(dev, hcd);
6a6c957e	155
b5dd18d8	156	result = usb_add_hcd(hcd, virq, 0);
6a6c957e GL	157
	158	if (result) {
	159	dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
	160	__func__, __LINE__, result);
	161	goto fail_add_hcd;
	162	}
	163
3c9740a1	164	device_wakeup_enable(hcd->self.controller);
6a6c957e GL	165	return result;
	166
	167	fail_add_hcd:
	168	iounmap(hcd->regs);
	169	fail_ioremap:
7a4eb7fd	170	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
6a6c957e GL	171	usb_put_hcd(hcd);
6a6c957e GL	172	fail_create_hcd:
dc4f60c2	173	ps3_io_irq_destroy(virq);
6a6c957e GL	174	fail_irq:
6a6c957e GL	175	ps3_free_mmio_region(dev->m_region);
7a4eb7fd GL	176	fail_mmio_region:
	177	ps3_dma_region_free(dev->d_region);
	178	fail_dma_region:
	179	ps3_close_hv_device(dev);
	180	fail_open:
6a6c957e GL	181	fail_start:
	182	return result;
	183	}
	184
ddcb01ff	185	static int ps3_ohci_remove(struct ps3_system_bus_device *dev)
6a6c957e	186	{
7a4eb7fd	187	unsigned int tmp;
03fa68c2	188	struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
6a6c957e	189
7a4eb7fd GL	190	BUG_ON(!hcd);
	191
	192	dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
	193	dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
	194
	195	tmp = hcd->irq;
	196
ddcb01ff	197	ohci_shutdown(hcd);
7a4eb7fd GL	198	usb_remove_hcd(hcd);
7a4eb7fd GL	199
03fa68c2	200	ps3_system_bus_set_drvdata(dev, NULL);
6a6c957e	201
7a4eb7fd GL	202	BUG_ON(!hcd->regs);
	203	iounmap(hcd->regs);
	204
	205	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	206	usb_put_hcd(hcd);
	207
	208	ps3_io_irq_destroy(tmp);
	209	ps3_free_mmio_region(dev->m_region);
	210
	211	ps3_dma_region_free(dev->d_region);
	212	ps3_close_hv_device(dev);
	213
6a6c957e GL	214	return 0;
	215	}
	216
31348517	217	static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
7a4eb7fd GL	218	{
	219	return firmware_has_feature(FW_FEATURE_PS3_LV1)
	220	? ps3_system_bus_driver_register(drv)
	221	: 0;
	222	}
	223
	224	static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
	225	{
	226	if (firmware_has_feature(FW_FEATURE_PS3_LV1))
	227	ps3_system_bus_driver_unregister(drv);
	228	}
	229
	230	MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);
6a6c957e	231
7a4eb7fd GL	232	static struct ps3_system_bus_driver ps3_ohci_driver = {
	233	.core.name = "ps3-ohci-driver",
	234	.core.owner = THIS_MODULE,
6a6c957e	235	.match_id = PS3_MATCH_ID_OHCI,
7a4eb7fd GL	236	.probe = ps3_ohci_probe,
	237	.remove = ps3_ohci_remove,
	238	.shutdown = ps3_ohci_remove,
6a6c957e	239	};