[net-next-2.6.git] / drivers / usb / host / xhci-pci.c

/*
 * xHCI host controller driver PCI Bus Glue.
 *
 * Copyright (C) 2008 Intel Corp.
 *
 * Author: Sarah Sharp
 * Some code borrowed from the Linux EHCI driver.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/pci.h>

#include "xhci.h"

/* Device for a quirk */
#define PCI_VENDOR_ID_FRESCO_LOGIC	0x1b73
#define PCI_DEVICE_ID_FRESCO_LOGIC_PDK	0x1000

static const char hcd_name[] = "xhci_hcd";

/* called after powerup, by probe or system-pm "wakeup" */
static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
{
	/*
	 * TODO: Implement finding debug ports later.
	 * TODO: see if there are any quirks that need to be added to handle
	 * new extended capabilities.
	 */

	/* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */
	if (!pci_set_mwi(pdev))
		xhci_dbg(xhci, "MWI active\n");

	xhci_dbg(xhci, "Finished xhci_pci_reinit\n");
	return 0;
}

/* called during probe() after chip reset completes */
static int xhci_pci_setup(struct usb_hcd *hcd)
{
	struct xhci_hcd		*xhci = hcd_to_xhci(hcd);
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
	int			retval;

	hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 1;

	xhci->cap_regs = hcd->regs;
	xhci->op_regs = hcd->regs +
		HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase));
	xhci->run_regs = hcd->regs +
		(xhci_readl(xhci, &xhci->cap_regs->run_regs_off) & RTSOFF_MASK);
	/* Cache read-only capability registers */
	xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1);
	xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2);
	xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3);
	xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
	xhci->hci_version = HC_VERSION(xhci->hcc_params);
	xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
	xhci_print_registers(xhci);

	/* Look for vendor-specific quirks */
	if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
			pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
			pdev->revision == 0x0) {
			xhci->quirks |= XHCI_RESET_EP_QUIRK;
			xhci_dbg(xhci, "QUIRK: Fresco Logic xHC needs configure"
					" endpoint cmd after reset endpoint\n");
	}

	/* Make sure the HC is halted. */
	retval = xhci_halt(xhci);
	if (retval)
		return retval;

	xhci_dbg(xhci, "Resetting HCD\n");
	/* Reset the internal HC memory state and registers. */
	retval = xhci_reset(xhci);
	if (retval)
		return retval;
	xhci_dbg(xhci, "Reset complete\n");

	xhci_dbg(xhci, "Calling HCD init\n");
	/* Initialize HCD and host controller data structures. */
	retval = xhci_init(hcd);
	if (retval)
		return retval;
	xhci_dbg(xhci, "Called HCD init\n");

	pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
	xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);

	/* Find any debug ports */
	return xhci_pci_reinit(xhci, pdev);
}

static const struct hc_driver xhci_pci_hc_driver = {
	.description =		hcd_name,
	.product_desc =		"xHCI Host Controller",
	.hcd_priv_size =	sizeof(struct xhci_hcd),

	/*
	 * generic hardware linkage
	 */
	.irq =			xhci_irq,
	.flags =		HCD_MEMORY | HCD_USB3,

	/*
	 * basic lifecycle operations
	 */
	.reset =		xhci_pci_setup,
	.start =		xhci_run,
	/* suspend and resume implemented later */
	.stop =			xhci_stop,
	.shutdown =		xhci_shutdown,

	/*
	 * managing i/o requests and associated device resources
	 */
	.urb_enqueue =		xhci_urb_enqueue,
	.urb_dequeue =		xhci_urb_dequeue,
	.alloc_dev =		xhci_alloc_dev,
	.free_dev =		xhci_free_dev,
	.add_endpoint =		xhci_add_endpoint,
	.drop_endpoint =	xhci_drop_endpoint,
	.endpoint_reset =	xhci_endpoint_reset,
	.check_bandwidth =	xhci_check_bandwidth,
	.reset_bandwidth =	xhci_reset_bandwidth,
	.address_device =	xhci_address_device,
	.update_hub_device =	xhci_update_hub_device,
	.reset_device =		xhci_reset_device,

	/*
	 * scheduling support
	 */
	.get_frame_number =	xhci_get_frame,

	/* Root hub support */
	.hub_control =		xhci_hub_control,
	.hub_status_data =	xhci_hub_status_data,
};

/*-------------------------------------------------------------------------*/

/* PCI driver selection metadata; PCI hotplugging uses this */
static const struct pci_device_id pci_ids[] = { {
	/* handle any USB 3.0 xHCI controller */
	PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
	.driver_data =	(unsigned long) &xhci_pci_hc_driver,
	},
	{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, pci_ids);

/* pci driver glue; this is a "new style" PCI driver module */
static struct pci_driver xhci_pci_driver = {
	.name =		(char *) hcd_name,
	.id_table =	pci_ids,

	.probe =	usb_hcd_pci_probe,
	.remove =	usb_hcd_pci_remove,
	/* suspend and resume implemented later */

	.shutdown = 	usb_hcd_pci_shutdown,
};

int xhci_register_pci()
{
	return pci_register_driver(&xhci_pci_driver);
}

void xhci_unregister_pci()
{
	pci_unregister_driver(&xhci_pci_driver);
}
Commit	Line	Data
66d4eadd SS	1	/*
	2	* xHCI host controller driver PCI Bus Glue.
	3	*
	4	* Copyright (C) 2008 Intel Corp.
	5	*
	6	* Author: Sarah Sharp
	7	* Some code borrowed from the Linux EHCI driver.
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	15	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	16	* for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software Foundation,
	20	* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21	*/
	22
	23	#include <linux/pci.h>
	24
	25	#include "xhci.h"
	26
ac9d8fe7 SS	27	/* Device for a quirk */
	28	#define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73
	29	#define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000
	30
66d4eadd SS	31	static const char hcd_name[] = "xhci_hcd";
	32
	33	/* called after powerup, by probe or system-pm "wakeup" */
	34	static int xhci_pci_reinit(struct xhci_hcd xhci, struct pci_dev pdev)
	35	{
	36	/*
	37	* TODO: Implement finding debug ports later.
	38	* TODO: see if there are any quirks that need to be added to handle
	39	* new extended capabilities.
	40	*/
	41
	42	/* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */
	43	if (!pci_set_mwi(pdev))
	44	xhci_dbg(xhci, "MWI active\n");
	45
	46	xhci_dbg(xhci, "Finished xhci_pci_reinit\n");
	47	return 0;
	48	}
	49
	50	/* called during probe() after chip reset completes */
	51	static int xhci_pci_setup(struct usb_hcd *hcd)
	52	{
	53	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
	54	struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
	55	int retval;
	56
4c1bd3d7 DV	57	hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 1;
4c1bd3d7 DV	58
66d4eadd SS	59	xhci->cap_regs = hcd->regs;
	60	xhci->op_regs = hcd->regs +
	61	HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase));
	62	xhci->run_regs = hcd->regs +
	63	(xhci_readl(xhci, &xhci->cap_regs->run_regs_off) & RTSOFF_MASK);
	64	/* Cache read-only capability registers */
	65	xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1);
	66	xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2);
	67	xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3);
ac1c1b7f SS	68	xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
ac1c1b7f SS	69	xhci->hci_version = HC_VERSION(xhci->hcc_params);
66d4eadd SS	70	xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
	71	xhci_print_registers(xhci);
	72
ac9d8fe7 SS	73	/* Look for vendor-specific quirks */
	74	if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
	75	pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
	76	pdev->revision == 0x0) {
	77	xhci->quirks \|= XHCI_RESET_EP_QUIRK;
	78	xhci_dbg(xhci, "QUIRK: Fresco Logic xHC needs configure"
	79	" endpoint cmd after reset endpoint\n");
	80	}
	81
66d4eadd SS	82	/* Make sure the HC is halted. */
	83	retval = xhci_halt(xhci);
	84	if (retval)
	85	return retval;
	86
	87	xhci_dbg(xhci, "Resetting HCD\n");
	88	/* Reset the internal HC memory state and registers. */
	89	retval = xhci_reset(xhci);
	90	if (retval)
	91	return retval;
	92	xhci_dbg(xhci, "Reset complete\n");
	93
	94	xhci_dbg(xhci, "Calling HCD init\n");
	95	/* Initialize HCD and host controller data structures. */
	96	retval = xhci_init(hcd);
	97	if (retval)
	98	return retval;
	99	xhci_dbg(xhci, "Called HCD init\n");
	100
	101	pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
	102	xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
	103
	104	/* Find any debug ports */
	105	return xhci_pci_reinit(xhci, pdev);
	106	}
	107
	108	static const struct hc_driver xhci_pci_hc_driver = {
	109	.description = hcd_name,
	110	.product_desc = "xHCI Host Controller",
	111	.hcd_priv_size = sizeof(struct xhci_hcd),
	112
	113	/*
	114	* generic hardware linkage
	115	*/
7f84eef0	116	.irq = xhci_irq,
66d4eadd SS	117	.flags = HCD_MEMORY \| HCD_USB3,
	118
	119	/*
	120	* basic lifecycle operations
	121	*/
	122	.reset = xhci_pci_setup,
	123	.start = xhci_run,
	124	/* suspend and resume implemented later */
	125	.stop = xhci_stop,
	126	.shutdown = xhci_shutdown,
	127
3ffbba95 SS	128	/*
	129	* managing i/o requests and associated device resources
	130	*/
d0e96f5a SS	131	.urb_enqueue = xhci_urb_enqueue,
d0e96f5a SS	132	.urb_dequeue = xhci_urb_dequeue,
3ffbba95 SS	133	.alloc_dev = xhci_alloc_dev,
3ffbba95 SS	134	.free_dev = xhci_free_dev,
f94e0186 SS	135	.add_endpoint = xhci_add_endpoint,
f94e0186 SS	136	.drop_endpoint = xhci_drop_endpoint,
a1587d97	137	.endpoint_reset = xhci_endpoint_reset,
f94e0186 SS	138	.check_bandwidth = xhci_check_bandwidth,
f94e0186 SS	139	.reset_bandwidth = xhci_reset_bandwidth,
3ffbba95	140	.address_device = xhci_address_device,
b356b7c7	141	.update_hub_device = xhci_update_hub_device,
a5f0efab	142	.reset_device = xhci_reset_device,
3ffbba95	143
66d4eadd SS	144	/*
	145	* scheduling support
	146	*/
	147	.get_frame_number = xhci_get_frame,
	148
0f2a7930 SS	149	/* Root hub support */
	150	.hub_control = xhci_hub_control,
	151	.hub_status_data = xhci_hub_status_data,
66d4eadd SS	152	};
	153
	154	/-------------------------------------------------------------------------/
	155
	156	/* PCI driver selection metadata; PCI hotplugging uses this */
	157	static const struct pci_device_id pci_ids[] = { {
	158	/* handle any USB 3.0 xHCI controller */
	159	PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
	160	.driver_data = (unsigned long) &xhci_pci_hc_driver,
	161	},
	162	{ /* end: all zeroes */ }
	163	};
	164	MODULE_DEVICE_TABLE(pci, pci_ids);
	165
	166	/* pci driver glue; this is a "new style" PCI driver module */
	167	static struct pci_driver xhci_pci_driver = {
	168	.name = (char *) hcd_name,
	169	.id_table = pci_ids,
	170
	171	.probe = usb_hcd_pci_probe,
	172	.remove = usb_hcd_pci_remove,
	173	/* suspend and resume implemented later */
	174
	175	.shutdown = usb_hcd_pci_shutdown,
	176	};
	177
	178	int xhci_register_pci()
	179	{
	180	return pci_register_driver(&xhci_pci_driver);
	181	}
	182
	183	void xhci_unregister_pci()
	184	{
	185	pci_unregister_driver(&xhci_pci_driver);
	186	}