[deliverable/linux.git] / arch / powerpc / platforms / ps3 / device-init.c

/*
 *  PS3 device registration routines.
 *
 *  Copyright (C) 2007 Sony Computer Entertainment Inc.
 *  Copyright 2007 Sony Corp.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 of the License.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/delay.h>
#include <linux/freezer.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/init.h>

#include <asm/firmware.h>
#include <asm/lv1call.h>
#include <asm/ps3stor.h>

#include "platform.h"

/**
 * ps3_setup_gelic_device - Setup and register a gelic device instance.
 *
 * Allocates memory for a struct ps3_system_bus_device instance, initialises the
 * structure members, and registers the device instance with the system bus.
 */

static int __init ps3_setup_gelic_device(
	const struct ps3_repository_device *repo)
{
	int result;
	struct layout {
		struct ps3_system_bus_device dev;
		struct ps3_dma_region d_region;
	} *p;

	pr_debug(" -> %s:%d\n", __func__, __LINE__);

	BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
	BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_GELIC);

	p = kzalloc(sizeof(struct layout), GFP_KERNEL);

	if (!p) {
		result = -ENOMEM;
		goto fail_malloc;
	}

	p->dev.match_id = PS3_MATCH_ID_GELIC;
	p->dev.dev_type = PS3_DEVICE_TYPE_SB;
	p->dev.bus_id = repo->bus_id;
	p->dev.dev_id = repo->dev_id;
	p->dev.d_region = &p->d_region;

	result = ps3_repository_find_interrupt(repo,
		PS3_INTERRUPT_TYPE_EVENT_PORT, &p->dev.interrupt_id);

	if (result) {
		pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
			__func__, __LINE__);
		goto fail_find_interrupt;
	}

	BUG_ON(p->dev.interrupt_id != 0);

	result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
		PS3_DMA_OTHER, NULL, 0);

	if (result) {
		pr_debug("%s:%d ps3_dma_region_init failed\n",
			__func__, __LINE__);
		goto fail_dma_init;
	}

	result = ps3_system_bus_device_register(&p->dev);

	if (result) {
		pr_debug("%s:%d ps3_system_bus_device_register failed\n",
			__func__, __LINE__);
		goto fail_device_register;
	}

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return result;

fail_device_register:
fail_dma_init:
fail_find_interrupt:
	kfree(p);
fail_malloc:
	pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
	return result;
}

static int __init_refok ps3_setup_uhc_device(
	const struct ps3_repository_device *repo, enum ps3_match_id match_id,
	enum ps3_interrupt_type interrupt_type, enum ps3_reg_type reg_type)
{
	int result;
	struct layout {
		struct ps3_system_bus_device dev;
		struct ps3_dma_region d_region;
		struct ps3_mmio_region m_region;
	} *p;
	u64 bus_addr;
	u64 len;

	pr_debug(" -> %s:%d\n", __func__, __LINE__);

	BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
	BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_USB);

	p = kzalloc(sizeof(struct layout), GFP_KERNEL);

	if (!p) {
		result = -ENOMEM;
		goto fail_malloc;
	}

	p->dev.match_id = match_id;
	p->dev.dev_type = PS3_DEVICE_TYPE_SB;
	p->dev.bus_id = repo->bus_id;
	p->dev.dev_id = repo->dev_id;
	p->dev.d_region = &p->d_region;
	p->dev.m_region = &p->m_region;

	result = ps3_repository_find_interrupt(repo,
		interrupt_type, &p->dev.interrupt_id);

	if (result) {
		pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
			__func__, __LINE__);
		goto fail_find_interrupt;
	}

	result = ps3_repository_find_reg(repo, reg_type,
		&bus_addr, &len);

	if (result) {
		pr_debug("%s:%d ps3_repository_find_reg failed\n",
			__func__, __LINE__);
		goto fail_find_reg;
	}

	result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
		PS3_DMA_INTERNAL, NULL, 0);

	if (result) {
		pr_debug("%s:%d ps3_dma_region_init failed\n",
			__func__, __LINE__);
		goto fail_dma_init;
	}

	result = ps3_mmio_region_init(&p->dev, p->dev.m_region, bus_addr, len,
		PS3_MMIO_4K);

	if (result) {
		pr_debug("%s:%d ps3_mmio_region_init failed\n",
			__func__, __LINE__);
		goto fail_mmio_init;
	}

	result = ps3_system_bus_device_register(&p->dev);

	if (result) {
		pr_debug("%s:%d ps3_system_bus_device_register failed\n",
			__func__, __LINE__);
		goto fail_device_register;
	}

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return result;

fail_device_register:
fail_mmio_init:
fail_dma_init:
fail_find_reg:
fail_find_interrupt:
	kfree(p);
fail_malloc:
	pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
	return result;
}

static int __init ps3_setup_ehci_device(
	const struct ps3_repository_device *repo)
{
	return ps3_setup_uhc_device(repo, PS3_MATCH_ID_EHCI,
		PS3_INTERRUPT_TYPE_SB_EHCI, PS3_REG_TYPE_SB_EHCI);
}

static int __init ps3_setup_ohci_device(
	const struct ps3_repository_device *repo)
{
	return ps3_setup_uhc_device(repo, PS3_MATCH_ID_OHCI,
		PS3_INTERRUPT_TYPE_SB_OHCI, PS3_REG_TYPE_SB_OHCI);
}

static int __init ps3_setup_vuart_device(enum ps3_match_id match_id,
	unsigned int port_number)
{
	int result;
	struct layout {
		struct ps3_system_bus_device dev;
	} *p;

	pr_debug(" -> %s:%d: match_id %u, port %u\n", __func__, __LINE__,
		match_id, port_number);

	p = kzalloc(sizeof(struct layout), GFP_KERNEL);

	if (!p)
		return -ENOMEM;

	p->dev.match_id = match_id;
	p->dev.dev_type = PS3_DEVICE_TYPE_VUART;
	p->dev.port_number = port_number;

	result = ps3_system_bus_device_register(&p->dev);

	if (result)
		pr_debug("%s:%d ps3_system_bus_device_register failed\n",
			__func__, __LINE__);

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return result;
}

static int ps3stor_wait_for_completion(u64 dev_id, u64 tag,
				       unsigned int timeout)
{
	int result = -1;
	unsigned int retries = 0;
	u64 status;

	for (retries = 0; retries < timeout; retries++) {
		result = lv1_storage_check_async_status(dev_id, tag, &status);
		if (!result)
			break;

		msleep(1);
	}

	if (result)
		pr_debug("%s:%u: check_async_status: %s, status %lx\n",
			 __func__, __LINE__, ps3_result(result), status);

	return result;
}

/**
 * ps3_storage_wait_for_device - Wait for a storage device to become ready.
 * @repo: The repository device to wait for.
 *
 * Uses the hypervisor's storage device notification mechanism to wait until
 * a storage device is ready.  The device notification mechanism uses a
 * psuedo device (id = -1) to asynchronously notify the guest when storage
 * devices become ready.  The notification device has a block size of 512
 * bytes.
 */

static int ps3_storage_wait_for_device(const struct ps3_repository_device *repo)
{
	int error = -ENODEV;
	int result;
	const u64 notification_dev_id = (u64)-1LL;
	const unsigned int timeout = HZ;
	u64 lpar;
	u64 tag;
	void *buf;
	enum ps3_notify_type {
		notify_device_ready = 0,
		notify_region_probe = 1,
		notify_region_update = 2,
	};
	struct {
		u64 operation_code;	/* must be zero */
		u64 event_mask;		/* OR of 1UL << enum ps3_notify_type */
	} *notify_cmd;
	struct {
		u64 event_type;		/* enum ps3_notify_type */
		u64 bus_id;
		u64 dev_id;
		u64 dev_type;
		u64 dev_port;
	} *notify_event;

	pr_debug(" -> %s:%u: bus_id %u, dev_id %u, dev_type %u\n", __func__,
		 __LINE__, repo->bus_id, repo->dev_id, repo->dev_type);

	buf = kzalloc(512, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	lpar = ps3_mm_phys_to_lpar(__pa(buf));
	notify_cmd = buf;
	notify_event = buf;

	result = lv1_open_device(repo->bus_id, notification_dev_id, 0);
	if (result) {
		printk(KERN_ERR "%s:%u: lv1_open_device %s\n", __func__,
		       __LINE__, ps3_result(result));
		goto fail_free;
	}

	/* Setup and write the request for device notification. */

	notify_cmd->operation_code = 0; /* must be zero */
	notify_cmd->event_mask = 1UL << notify_region_probe;

	result = lv1_storage_write(notification_dev_id, 0, 0, 1, 0, lpar,
				   &tag);
	if (result) {
		printk(KERN_ERR "%s:%u: write failed %s\n", __func__, __LINE__,
		       ps3_result(result));
		goto fail_close;
	}

	/* Wait for the write completion */

	result = ps3stor_wait_for_completion(notification_dev_id, tag,
					     timeout);
	if (result) {
		printk(KERN_ERR "%s:%u: write not completed %s\n", __func__,
		       __LINE__, ps3_result(result));
		goto fail_close;
	}

	/* Loop here processing the requested notification events. */

	while (1) {
		memset(notify_event, 0, sizeof(*notify_event));

		result = lv1_storage_read(notification_dev_id, 0, 0, 1, 0,
					  lpar, &tag);
		if (result) {
			printk(KERN_ERR "%s:%u: write failed %s\n", __func__,
			       __LINE__, ps3_result(result));
			break;
		}

		result = ps3stor_wait_for_completion(notification_dev_id, tag,
						     timeout);
		if (result) {
			printk(KERN_ERR "%s:%u: read not completed %s\n",
			       __func__, __LINE__, ps3_result(result));
			break;
		}

		if (notify_event->event_type != notify_region_probe ||
		    notify_event->bus_id != repo->bus_id) {
			pr_debug("%s:%u: bad notify_event: event %lu, "
				 "dev_id %lu, dev_type %lu\n",
				 __func__, __LINE__, notify_event->event_type,
				 notify_event->dev_id, notify_event->dev_type);
			break;
		}

		if (notify_event->dev_id == repo->dev_id &&
		    notify_event->dev_type == repo->dev_type) {
			pr_debug("%s:%u: device ready: dev_id %u\n", __func__,
				 __LINE__, repo->dev_id);
			error = 0;
			break;
		}

		if (notify_event->dev_id == repo->dev_id &&
		    notify_event->dev_type == PS3_DEV_TYPE_NOACCESS) {
			pr_debug("%s:%u: no access: dev_id %u\n", __func__,
				 __LINE__, repo->dev_id);
			break;
		}
	}

fail_close:
	lv1_close_device(repo->bus_id, notification_dev_id);
fail_free:
	kfree(buf);
	pr_debug(" <- %s:%u\n", __func__, __LINE__);
	return error;
}

static int ps3_setup_storage_dev(const struct ps3_repository_device *repo,
				 enum ps3_match_id match_id)
{
	int result;
	struct ps3_storage_device *p;
	u64 port, blk_size, num_blocks;
	unsigned int num_regions, i;

	pr_debug(" -> %s:%u: match_id %u\n", __func__, __LINE__, match_id);

	result = ps3_repository_read_stor_dev_info(repo->bus_index,
						   repo->dev_index, &port,
						   &blk_size, &num_blocks,
						   &num_regions);
	if (result) {
		printk(KERN_ERR "%s:%u: _read_stor_dev_info failed %d\n",
		       __func__, __LINE__, result);
		return -ENODEV;
	}

	pr_debug("%s:%u: index %u:%u: port %lu blk_size %lu num_blocks %lu "
		 "num_regions %u\n", __func__, __LINE__, repo->bus_index,
		 repo->dev_index, port, blk_size, num_blocks, num_regions);

	p = kzalloc(sizeof(struct ps3_storage_device) +
		    num_regions * sizeof(struct ps3_storage_region),
		    GFP_KERNEL);
	if (!p) {
		result = -ENOMEM;
		goto fail_malloc;
	}

	p->sbd.match_id = match_id;
	p->sbd.dev_type = PS3_DEVICE_TYPE_SB;
	p->sbd.bus_id = repo->bus_id;
	p->sbd.dev_id = repo->dev_id;
	p->sbd.d_region = &p->dma_region;
	p->blk_size = blk_size;
	p->num_regions = num_regions;

	result = ps3_repository_find_interrupt(repo,
					       PS3_INTERRUPT_TYPE_EVENT_PORT,
					       &p->sbd.interrupt_id);
	if (result) {
		printk(KERN_ERR "%s:%u: find_interrupt failed %d\n", __func__,
		       __LINE__, result);
		result = -ENODEV;
		goto fail_find_interrupt;
	}

	/* FIXME: Arrange to only do this on a 'cold' boot */

	result = ps3_storage_wait_for_device(repo);
	if (result) {
		printk(KERN_ERR "%s:%u: storage_notification failed %d\n",
		       __func__, __LINE__, result);
		result = -ENODEV;
		goto fail_probe_notification;
	}

	for (i = 0; i < num_regions; i++) {
		unsigned int id;
		u64 start, size;

		result = ps3_repository_read_stor_dev_region(repo->bus_index,
							     repo->dev_index,
							     i, &id, &start,
							     &size);
		if (result) {
			printk(KERN_ERR
			       "%s:%u: read_stor_dev_region failed %d\n",
			       __func__, __LINE__, result);
			result = -ENODEV;
			goto fail_read_region;
		}
		pr_debug("%s:%u: region %u: id %u start %lu size %lu\n",
			 __func__, __LINE__, i, id, start, size);

		p->regions[i].id = id;
		p->regions[i].start = start;
		p->regions[i].size = size;
	}

	result = ps3_system_bus_device_register(&p->sbd);
	if (result) {
		pr_debug("%s:%u ps3_system_bus_device_register failed\n",
			 __func__, __LINE__);
		goto fail_device_register;
	}

	pr_debug(" <- %s:%u\n", __func__, __LINE__);
	return 0;

fail_device_register:
fail_read_region:
fail_probe_notification:
fail_find_interrupt:
	kfree(p);
fail_malloc:
	pr_debug(" <- %s:%u: fail.\n", __func__, __LINE__);
	return result;
}

static int __init ps3_register_vuart_devices(void)
{
	int result;
	unsigned int port_number;

	pr_debug(" -> %s:%d\n", __func__, __LINE__);

	result = ps3_repository_read_vuart_av_port(&port_number);
	if (result)
		port_number = 0; /* av default */

	result = ps3_setup_vuart_device(PS3_MATCH_ID_AV_SETTINGS, port_number);
	WARN_ON(result);

	result = ps3_repository_read_vuart_sysmgr_port(&port_number);
	if (result)
		port_number = 2; /* sysmgr default */

	result = ps3_setup_vuart_device(PS3_MATCH_ID_SYSTEM_MANAGER,
		port_number);
	WARN_ON(result);

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return result;
}

static int __init ps3_register_sound_devices(void)
{
	int result;
	struct layout {
		struct ps3_system_bus_device dev;
		struct ps3_dma_region d_region;
		struct ps3_mmio_region m_region;
	} *p;

	pr_debug(" -> %s:%d\n", __func__, __LINE__);

	p = kzalloc(sizeof(*p), GFP_KERNEL);
	if (!p)
		return -ENOMEM;

	p->dev.match_id = PS3_MATCH_ID_SOUND;
	p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
	p->dev.d_region = &p->d_region;
	p->dev.m_region = &p->m_region;

	result = ps3_system_bus_device_register(&p->dev);

	if (result)
		pr_debug("%s:%d ps3_system_bus_device_register failed\n",
			__func__, __LINE__);

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return result;
}

static int __init ps3_register_graphics_devices(void)
{
	int result;
	struct layout {
		struct ps3_system_bus_device dev;
	} *p;

	pr_debug(" -> %s:%d\n", __func__, __LINE__);

	p = kzalloc(sizeof(struct layout), GFP_KERNEL);

	if (!p)
		return -ENOMEM;

	p->dev.match_id = PS3_MATCH_ID_GRAPHICS;
	p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;

	result = ps3_system_bus_device_register(&p->dev);

	if (result)
		pr_debug("%s:%d ps3_system_bus_device_register failed\n",
			__func__, __LINE__);

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return result;
}

/**
 * ps3_register_repository_device - Register a device from the repositiory info.
 *
 */

static int ps3_register_repository_device(
	const struct ps3_repository_device *repo)
{
	int result;

	switch (repo->dev_type) {
	case PS3_DEV_TYPE_SB_GELIC:
		result = ps3_setup_gelic_device(repo);
		if (result) {
			pr_debug("%s:%d ps3_setup_gelic_device failed\n",
				__func__, __LINE__);
		}
		break;
	case PS3_DEV_TYPE_SB_USB:

		/* Each USB device has both an EHCI and an OHCI HC */

		result = ps3_setup_ehci_device(repo);

		if (result) {
			pr_debug("%s:%d ps3_setup_ehci_device failed\n",
				__func__, __LINE__);
		}

		result = ps3_setup_ohci_device(repo);

		if (result) {
			pr_debug("%s:%d ps3_setup_ohci_device failed\n",
				__func__, __LINE__);
		}
		break;
	case PS3_DEV_TYPE_STOR_DISK:
		result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_DISK);

		/* Some devices are not accessable from the Other OS lpar. */
		if (result == -ENODEV) {
			result = 0;
			pr_debug("%s:%u: not accessable\n", __func__,
				 __LINE__);
		}

		if (result)
			pr_debug("%s:%u ps3_setup_storage_dev failed\n",
				 __func__, __LINE__);
		break;

	case PS3_DEV_TYPE_STOR_ROM:
		result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_ROM);
		if (result)
			pr_debug("%s:%u ps3_setup_storage_dev failed\n",
				 __func__, __LINE__);
		break;

	case PS3_DEV_TYPE_STOR_FLASH:
		result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_FLASH);
		if (result)
			pr_debug("%s:%u ps3_setup_storage_dev failed\n",
				 __func__, __LINE__);
		break;

	default:
		result = 0;
		pr_debug("%s:%u: unsupported dev_type %u\n", __func__, __LINE__,
			repo->dev_type);
	}

	return result;
}

/**
 * ps3_probe_thread - Background repository probing at system startup.
 *
 * This implementation only supports background probing on a single bus.
 */

static int ps3_probe_thread(void *data)
{
	struct ps3_repository_device *repo = data;
	int result;
	unsigned int ms = 250;

	pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__);

	do {
		try_to_freeze();

		pr_debug("%s:%u: probing...\n", __func__, __LINE__);

		do {
			result = ps3_repository_find_device(repo);

			if (result == -ENODEV)
				pr_debug("%s:%u: nothing new\n", __func__,
					__LINE__);
			else if (result)
				pr_debug("%s:%u: find device error.\n",
					__func__, __LINE__);
			else {
				pr_debug("%s:%u: found device\n", __func__,
					__LINE__);
				ps3_register_repository_device(repo);
				ps3_repository_bump_device(repo);
				ms = 250;
			}
		} while (!result);

		pr_debug("%s:%u: ms %u\n", __func__, __LINE__, ms);

		if ( ms > 60000)
			break;

		msleep_interruptible(ms);

		/* An exponential backoff. */
		ms <<= 1;

	} while (!kthread_should_stop());

	pr_debug(" <- %s:%u: kthread finished\n", __func__, __LINE__);

	return 0;
}

/**
 * ps3_start_probe_thread - Starts the background probe thread.
 *
 */

static int __init ps3_start_probe_thread(enum ps3_bus_type bus_type)
{
	int result;
	struct task_struct *task;
	static struct ps3_repository_device repo; /* must be static */

	pr_debug(" -> %s:%d\n", __func__, __LINE__);

	memset(&repo, 0, sizeof(repo));

	repo.bus_type = bus_type;

	result = ps3_repository_find_bus(repo.bus_type, 0, &repo.bus_index);

	if (result) {
		printk(KERN_ERR "%s: Cannot find bus (%d)\n", __func__, result);
		return -ENODEV;
	}

	result = ps3_repository_read_bus_id(repo.bus_index, &repo.bus_id);

	if (result) {
		printk(KERN_ERR "%s: read_bus_id failed %d\n", __func__,
			result);
		return -ENODEV;
	}

	task = kthread_run(ps3_probe_thread, &repo, "ps3-probe-%u", bus_type);

	if (IS_ERR(task)) {
		result = PTR_ERR(task);
		printk(KERN_ERR "%s: kthread_run failed %d\n", __func__,
		       result);
		return result;
	}

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return 0;
}

/**
 * ps3_register_devices - Probe the system and register devices found.
 *
 * A device_initcall() routine.
 */

static int __init ps3_register_devices(void)
{
	int result;

	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
		return -ENODEV;

	pr_debug(" -> %s:%d\n", __func__, __LINE__);

	/* ps3_repository_dump_bus_info(); */

	result = ps3_start_probe_thread(PS3_BUS_TYPE_STORAGE);

	ps3_register_vuart_devices();

	ps3_register_graphics_devices();

	ps3_repository_find_devices(PS3_BUS_TYPE_SB,
		ps3_register_repository_device);

	ps3_register_sound_devices();

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return 0;
}

device_initcall(ps3_register_devices);
Commit	Line	Data
ffbdd246 GL	1	/*
	2	* PS3 device registration routines.
	3	*
	4	* Copyright (C) 2007 Sony Computer Entertainment Inc.
	5	* Copyright 2007 Sony Corp.
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; version 2 of the License.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21	#include <linux/delay.h>
	22	#include <linux/freezer.h>
	23	#include <linux/kernel.h>
	24	#include <linux/kthread.h>
	25	#include <linux/init.h>
	26
	27	#include <asm/firmware.h>
	28	#include <asm/lv1call.h>
a5c631b1	29	#include <asm/ps3stor.h>
ffbdd246 GL	30
	31	#include "platform.h"
	32
	33	/**
	34	* ps3_setup_gelic_device - Setup and register a gelic device instance.
	35	*
	36	* Allocates memory for a struct ps3_system_bus_device instance, initialises the
	37	* structure members, and registers the device instance with the system bus.
	38	*/
	39
	40	static int __init ps3_setup_gelic_device(
	41	const struct ps3_repository_device *repo)
	42	{
	43	int result;
	44	struct layout {
	45	struct ps3_system_bus_device dev;
	46	struct ps3_dma_region d_region;
	47	} *p;
	48
	49	pr_debug(" -> %s:%d\n", __func__, __LINE__);
	50
	51	BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
	52	BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_GELIC);
	53
	54	p = kzalloc(sizeof(struct layout), GFP_KERNEL);
	55
	56	if (!p) {
	57	result = -ENOMEM;
	58	goto fail_malloc;
	59	}
	60
	61	p->dev.match_id = PS3_MATCH_ID_GELIC;
	62	p->dev.dev_type = PS3_DEVICE_TYPE_SB;
	63	p->dev.bus_id = repo->bus_id;
	64	p->dev.dev_id = repo->dev_id;
	65	p->dev.d_region = &p->d_region;
	66
	67	result = ps3_repository_find_interrupt(repo,
	68	PS3_INTERRUPT_TYPE_EVENT_PORT, &p->dev.interrupt_id);
	69
	70	if (result) {
	71	pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
	72	__func__, __LINE__);
	73	goto fail_find_interrupt;
	74	}
	75
	76	BUG_ON(p->dev.interrupt_id != 0);
	77
	78	result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
	79	PS3_DMA_OTHER, NULL, 0);
	80
	81	if (result) {
	82	pr_debug("%s:%d ps3_dma_region_init failed\n",
	83	__func__, __LINE__);
	84	goto fail_dma_init;
	85	}
	86
	87	result = ps3_system_bus_device_register(&p->dev);
	88
	89	if (result) {
	90	pr_debug("%s:%d ps3_system_bus_device_register failed\n",
	91	__func__, __LINE__);
	92	goto fail_device_register;
	93	}
94
95	pr_debug(" <- %s:%d\n", __func__, __LINE__);
96	return result;
97
98	fail_device_register:
99	fail_dma_init:
100	fail_find_interrupt:
101	kfree(p);
102	fail_malloc:
103	pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
104	return result;
105	}
106
107	static int __init_refok ps3_setup_uhc_device(
108	const struct ps3_repository_device *repo, enum ps3_match_id match_id,
109	enum ps3_interrupt_type interrupt_type, enum ps3_reg_type reg_type)
110	{
111	int result;
112	struct layout {
113	struct ps3_system_bus_device dev;
114	struct ps3_dma_region d_region;
115	struct ps3_mmio_region m_region;
116	} *p;
117	u64 bus_addr;
118	u64 len;
119
120	pr_debug(" -> %s:%d\n", __func__, __LINE__);
121
122	BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
123	BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_USB);
124
125	p = kzalloc(sizeof(struct layout), GFP_KERNEL);
126
127	if (!p) {
128	result = -ENOMEM;
129	goto fail_malloc;
130	}
131
132	p->dev.match_id = match_id;
133	p->dev.dev_type = PS3_DEVICE_TYPE_SB;
134	p->dev.bus_id = repo->bus_id;
135	p->dev.dev_id = repo->dev_id;
136	p->dev.d_region = &p->d_region;
137	p->dev.m_region = &p->m_region;
138
139	result = ps3_repository_find_interrupt(repo,
140	interrupt_type, &p->dev.interrupt_id);
141
142	if (result) {
143	pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
144	__func__, __LINE__);
145	goto fail_find_interrupt;
146	}
147
148	result = ps3_repository_find_reg(repo, reg_type,
149	&bus_addr, &len);
150
151	if (result) {
152	pr_debug("%s:%d ps3_repository_find_reg failed\n",
153	__func__, __LINE__);
154	goto fail_find_reg;
155	}
156
157	result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
158	PS3_DMA_INTERNAL, NULL, 0);
159
160	if (result) {
161	pr_debug("%s:%d ps3_dma_region_init failed\n",
162	__func__, __LINE__);
163	goto fail_dma_init;
164	}
165
166	result = ps3_mmio_region_init(&p->dev, p->dev.m_region, bus_addr, len,
167	PS3_MMIO_4K);
168
169	if (result) {
170	pr_debug("%s:%d ps3_mmio_region_init failed\n",
171	__func__, __LINE__);
172	goto fail_mmio_init;
173	}
174
175	result = ps3_system_bus_device_register(&p->dev);
176
177	if (result) {
178	pr_debug("%s:%d ps3_system_bus_device_register failed\n",
179	__func__, __LINE__);
180	goto fail_device_register;
181	}
182
183	pr_debug(" <- %s:%d\n", __func__, __LINE__);
184	return result;
185
186	fail_device_register:
187	fail_mmio_init:
188	fail_dma_init:
189	fail_find_reg:
190	fail_find_interrupt:
191	kfree(p);
192	fail_malloc:
193	pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
194	return result;
195	}
196
197	static int __init ps3_setup_ehci_device(
198	const struct ps3_repository_device *repo)
199	{
200	return ps3_setup_uhc_device(repo, PS3_MATCH_ID_EHCI,
201	PS3_INTERRUPT_TYPE_SB_EHCI, PS3_REG_TYPE_SB_EHCI);
202	}
203
204	static int __init ps3_setup_ohci_device(
205	const struct ps3_repository_device *repo)
206	{
207	return ps3_setup_uhc_device(repo, PS3_MATCH_ID_OHCI,
208	PS3_INTERRUPT_TYPE_SB_OHCI, PS3_REG_TYPE_SB_OHCI);
209	}
210
211	static int __init ps3_setup_vuart_device(enum ps3_match_id match_id,
212	unsigned int port_number)
213	{
214	int result;
215	struct layout {
216	struct ps3_system_bus_device dev;
217	} *p;
218
219	pr_debug(" -> %s:%d: match_id %u, port %u\n", __func__, __LINE__,
220	match_id, port_number);
221
222	p = kzalloc(sizeof(struct layout), GFP_KERNEL);
223
224	if (!p)
225	return -ENOMEM;
226
227	p->dev.match_id = match_id;
228	p->dev.dev_type = PS3_DEVICE_TYPE_VUART;
229	p->dev.port_number = port_number;
230
231	result = ps3_system_bus_device_register(&p->dev);
232
233	if (result)
234	pr_debug("%s:%d ps3_system_bus_device_register failed\n",
235	__func__, __LINE__);
236
237	pr_debug(" <- %s:%d\n", __func__, __LINE__);
238	return result;
239	}
240
a5c631b1 GU	241	static int ps3stor_wait_for_completion(u64 dev_id, u64 tag,
	242	unsigned int timeout)
	243	{
	244	int result = -1;
	245	unsigned int retries = 0;
	246	u64 status;
	247
	248	for (retries = 0; retries < timeout; retries++) {
	249	result = lv1_storage_check_async_status(dev_id, tag, &status);
	250	if (!result)
	251	break;
	252
	253	msleep(1);
	254	}
	255
	256	if (result)
	257	pr_debug("%s:%u: check_async_status: %s, status %lx\n",
	258	__func__, __LINE__, ps3_result(result), status);
	259
	260	return result;
	261	}
	262
	263	/**
	264	* ps3_storage_wait_for_device - Wait for a storage device to become ready.
	265	* @repo: The repository device to wait for.
	266	*
	267	* Uses the hypervisor's storage device notification mechanism to wait until
	268	* a storage device is ready. The device notification mechanism uses a
	269	* psuedo device (id = -1) to asynchronously notify the guest when storage
	270	* devices become ready. The notification device has a block size of 512
	271	* bytes.
	272	*/
	273
	274	static int ps3_storage_wait_for_device(const struct ps3_repository_device *repo)
	275	{
edd2a9d1	276	int error = -ENODEV;
a5c631b1 GU	277	int result;
	278	const u64 notification_dev_id = (u64)-1LL;
	279	const unsigned int timeout = HZ;
	280	u64 lpar;
	281	u64 tag;
edd2a9d1 GU	282	void *buf;
	283	enum ps3_notify_type {
	284	notify_device_ready = 0,
	285	notify_region_probe = 1,
	286	notify_region_update = 2,
	287	};
a5c631b1 GU	288	struct {
a5c631b1 GU	289	u64 operation_code; /* must be zero */
edd2a9d1	290	u64 event_mask; /* OR of 1UL << enum ps3_notify_type */
a5c631b1 GU	291	} *notify_cmd;
a5c631b1 GU	292	struct {
edd2a9d1	293	u64 event_type; /* enum ps3_notify_type */
a5c631b1 GU	294	u64 bus_id;
	295	u64 dev_id;
	296	u64 dev_type;
	297	u64 dev_port;
	298	} *notify_event;
a5c631b1 GU	299
	300	pr_debug(" -> %s:%u: bus_id %u, dev_id %u, dev_type %u\n", __func__,
	301	__LINE__, repo->bus_id, repo->dev_id, repo->dev_type);
	302
edd2a9d1 GU	303	buf = kzalloc(512, GFP_KERNEL);
edd2a9d1 GU	304	if (!buf)
a5c631b1 GU	305	return -ENOMEM;
a5c631b1 GU	306
edd2a9d1 GU	307	lpar = ps3_mm_phys_to_lpar(__pa(buf));
	308	notify_cmd = buf;
	309	notify_event = buf;
a5c631b1 GU	310
	311	result = lv1_open_device(repo->bus_id, notification_dev_id, 0);
	312	if (result) {
	313	printk(KERN_ERR "%s:%u: lv1_open_device %s\n", __func__,
	314	__LINE__, ps3_result(result));
a5c631b1 GU	315	goto fail_free;
	316	}
	317
	318	/* Setup and write the request for device notification. */
	319
edd2a9d1 GU	320	notify_cmd->operation_code = 0; /* must be zero */
edd2a9d1 GU	321	notify_cmd->event_mask = 1UL << notify_region_probe;
a5c631b1 GU	322
	323	result = lv1_storage_write(notification_dev_id, 0, 0, 1, 0, lpar,
	324	&tag);
	325	if (result) {
	326	printk(KERN_ERR "%s:%u: write failed %s\n", __func__, __LINE__,
	327	ps3_result(result));
a5c631b1 GU	328	goto fail_close;
	329	}
	330
	331	/* Wait for the write completion */
	332
	333	result = ps3stor_wait_for_completion(notification_dev_id, tag,
	334	timeout);
	335	if (result) {
	336	printk(KERN_ERR "%s:%u: write not completed %s\n", __func__,
	337	__LINE__, ps3_result(result));
a5c631b1 GU	338	goto fail_close;
	339	}
	340
	341	/* Loop here processing the requested notification events. */
	342
a5c631b1 GU	343	while (1) {
	344	memset(notify_event, 0, sizeof(*notify_event));
	345
	346	result = lv1_storage_read(notification_dev_id, 0, 0, 1, 0,
	347	lpar, &tag);
	348	if (result) {
	349	printk(KERN_ERR "%s:%u: write failed %s\n", __func__,
	350	__LINE__, ps3_result(result));
	351	break;
	352	}
	353
	354	result = ps3stor_wait_for_completion(notification_dev_id, tag,
	355	timeout);
	356	if (result) {
	357	printk(KERN_ERR "%s:%u: read not completed %s\n",
	358	__func__, __LINE__, ps3_result(result));
	359	break;
	360	}
	361
edd2a9d1	362	if (notify_event->event_type != notify_region_probe \|\|
a5c631b1 GU	363	notify_event->bus_id != repo->bus_id) {
	364	pr_debug("%s:%u: bad notify_event: event %lu, "
	365	"dev_id %lu, dev_type %lu\n",
	366	__func__, __LINE__, notify_event->event_type,
	367	notify_event->dev_id, notify_event->dev_type);
	368	break;
	369	}
	370
	371	if (notify_event->dev_id == repo->dev_id &&
	372	notify_event->dev_type == repo->dev_type) {
	373	pr_debug("%s:%u: device ready: dev_id %u\n", __func__,
	374	__LINE__, repo->dev_id);
2de69124	375	error = 0;
a5c631b1 GU	376	break;
	377	}
	378
	379	if (notify_event->dev_id == repo->dev_id &&
	380	notify_event->dev_type == PS3_DEV_TYPE_NOACCESS) {
	381	pr_debug("%s:%u: no access: dev_id %u\n", __func__,
	382	__LINE__, repo->dev_id);
	383	break;
	384	}
	385	}
	386
	387	fail_close:
	388	lv1_close_device(repo->bus_id, notification_dev_id);
	389	fail_free:
edd2a9d1	390	kfree(buf);
a5c631b1	391	pr_debug(" <- %s:%u\n", __func__, __LINE__);
edd2a9d1	392	return error;
a5c631b1 GU	393	}
	394
	395	static int ps3_setup_storage_dev(const struct ps3_repository_device *repo,
	396	enum ps3_match_id match_id)
	397	{
	398	int result;
	399	struct ps3_storage_device *p;
	400	u64 port, blk_size, num_blocks;
	401	unsigned int num_regions, i;
	402
	403	pr_debug(" -> %s:%u: match_id %u\n", __func__, __LINE__, match_id);
	404
	405	result = ps3_repository_read_stor_dev_info(repo->bus_index,
	406	repo->dev_index, &port,
	407	&blk_size, &num_blocks,
	408	&num_regions);
	409	if (result) {
	410	printk(KERN_ERR "%s:%u: _read_stor_dev_info failed %d\n",
	411	__func__, __LINE__, result);
	412	return -ENODEV;
	413	}
	414
	415	pr_debug("%s:%u: index %u:%u: port %lu blk_size %lu num_blocks %lu "
	416	"num_regions %u\n", __func__, __LINE__, repo->bus_index,
	417	repo->dev_index, port, blk_size, num_blocks, num_regions);
	418
	419	p = kzalloc(sizeof(struct ps3_storage_device) +
	420	num_regions * sizeof(struct ps3_storage_region),
	421	GFP_KERNEL);
	422	if (!p) {
	423	result = -ENOMEM;
	424	goto fail_malloc;
	425	}
	426
	427	p->sbd.match_id = match_id;
	428	p->sbd.dev_type = PS3_DEVICE_TYPE_SB;
	429	p->sbd.bus_id = repo->bus_id;
	430	p->sbd.dev_id = repo->dev_id;
	431	p->sbd.d_region = &p->dma_region;
	432	p->blk_size = blk_size;
	433	p->num_regions = num_regions;
	434
	435	result = ps3_repository_find_interrupt(repo,
	436	PS3_INTERRUPT_TYPE_EVENT_PORT,
	437	&p->sbd.interrupt_id);
	438	if (result) {
	439	printk(KERN_ERR "%s:%u: find_interrupt failed %d\n", __func__,
	440	__LINE__, result);
	441	result = -ENODEV;
	442	goto fail_find_interrupt;
	443	}
	444
	445	/* FIXME: Arrange to only do this on a 'cold' boot */
	446
	447	result = ps3_storage_wait_for_device(repo);
	448	if (result) {
	449	printk(KERN_ERR "%s:%u: storage_notification failed %d\n",
	450	__func__, __LINE__, result);
	451	result = -ENODEV;
	452	goto fail_probe_notification;
	453	}
	454
	455	for (i = 0; i < num_regions; i++) {
	456	unsigned int id;
457	u64 start, size;
458
459	result = ps3_repository_read_stor_dev_region(repo->bus_index,
460	repo->dev_index,
461	i, &id, &start,
462	&size);
463	if (result) {
464	printk(KERN_ERR
465	"%s:%u: read_stor_dev_region failed %d\n",
466	__func__, __LINE__, result);
467	result = -ENODEV;
468	goto fail_read_region;
469	}
470	pr_debug("%s:%u: region %u: id %u start %lu size %lu\n",
471	__func__, __LINE__, i, id, start, size);
472
473	p->regions[i].id = id;
474	p->regions[i].start = start;
475	p->regions[i].size = size;
476	}
477
478	result = ps3_system_bus_device_register(&p->sbd);
479	if (result) {
480	pr_debug("%s:%u ps3_system_bus_device_register failed\n",
481	__func__, __LINE__);
482	goto fail_device_register;
483	}
484
485	pr_debug(" <- %s:%u\n", __func__, __LINE__);
486	return 0;
487
488	fail_device_register:
489	fail_read_region:
490	fail_probe_notification:
491	fail_find_interrupt:
492	kfree(p);
493	fail_malloc:
494	pr_debug(" <- %s:%u: fail.\n", __func__, __LINE__);
495	return result;
496	}
497
ffbdd246 GL	498	static int __init ps3_register_vuart_devices(void)
	499	{
	500	int result;
	501	unsigned int port_number;
	502
	503	pr_debug(" -> %s:%d\n", __func__, __LINE__);
	504
	505	result = ps3_repository_read_vuart_av_port(&port_number);
	506	if (result)
	507	port_number = 0; /* av default */
	508
	509	result = ps3_setup_vuart_device(PS3_MATCH_ID_AV_SETTINGS, port_number);
	510	WARN_ON(result);
	511
	512	result = ps3_repository_read_vuart_sysmgr_port(&port_number);
	513	if (result)
	514	port_number = 2; /* sysmgr default */
	515
	516	result = ps3_setup_vuart_device(PS3_MATCH_ID_SYSTEM_MANAGER,
	517	port_number);
	518	WARN_ON(result);
	519
	520	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	521	return result;
	522	}
	523
	524	static int __init ps3_register_sound_devices(void)
	525	{
	526	int result;
	527	struct layout {
	528	struct ps3_system_bus_device dev;
	529	struct ps3_dma_region d_region;
	530	struct ps3_mmio_region m_region;
	531	} *p;
	532
	533	pr_debug(" -> %s:%d\n", __func__, __LINE__);
	534
	535	p = kzalloc(sizeof(*p), GFP_KERNEL);
	536	if (!p)
	537	return -ENOMEM;
	538
	539	p->dev.match_id = PS3_MATCH_ID_SOUND;
	540	p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
	541	p->dev.d_region = &p->d_region;
	542	p->dev.m_region = &p->m_region;
	543
	544	result = ps3_system_bus_device_register(&p->dev);
	545
	546	if (result)
	547	pr_debug("%s:%d ps3_system_bus_device_register failed\n",
	548	__func__, __LINE__);
	549
	550	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	551	return result;
	552	}
	553
	554	static int __init ps3_register_graphics_devices(void)
	555	{
	556	int result;
	557	struct layout {
	558	struct ps3_system_bus_device dev;
	559	} *p;
	560
	561	pr_debug(" -> %s:%d\n", __func__, __LINE__);
562
563	p = kzalloc(sizeof(struct layout), GFP_KERNEL);
564
565	if (!p)
566	return -ENOMEM;
567
568	p->dev.match_id = PS3_MATCH_ID_GRAPHICS;
569	p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
570
571	result = ps3_system_bus_device_register(&p->dev);
572
573	if (result)
574	pr_debug("%s:%d ps3_system_bus_device_register failed\n",
575	__func__, __LINE__);
576
577	pr_debug(" <- %s:%d\n", __func__, __LINE__);
578	return result;
579	}
580
581	/**
582	* ps3_register_repository_device - Register a device from the repositiory info.
583	*
584	*/
585
586	static int ps3_register_repository_device(
587	const struct ps3_repository_device *repo)
588	{
589	int result;
590
591	switch (repo->dev_type) {
592	case PS3_DEV_TYPE_SB_GELIC:
593	result = ps3_setup_gelic_device(repo);
594	if (result) {
595	pr_debug("%s:%d ps3_setup_gelic_device failed\n",
596	__func__, __LINE__);
597	}
598	break;
599	case PS3_DEV_TYPE_SB_USB:
600
601	/* Each USB device has both an EHCI and an OHCI HC */
602
603	result = ps3_setup_ehci_device(repo);
604
605	if (result) {
606	pr_debug("%s:%d ps3_setup_ehci_device failed\n",
607	__func__, __LINE__);
608	}
609
610	result = ps3_setup_ohci_device(repo);
611
612	if (result) {
613	pr_debug("%s:%d ps3_setup_ohci_device failed\n",
614	__func__, __LINE__);
615	}
616	break;
a5c631b1 GU	617	case PS3_DEV_TYPE_STOR_DISK:
	618	result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_DISK);
	619
	620	/* Some devices are not accessable from the Other OS lpar. */
	621	if (result == -ENODEV) {
	622	result = 0;
	623	pr_debug("%s:%u: not accessable\n", __func__,
	624	__LINE__);
	625	}
	626
	627	if (result)
	628	pr_debug("%s:%u ps3_setup_storage_dev failed\n",
	629	__func__, __LINE__);
	630	break;
	631
	632	case PS3_DEV_TYPE_STOR_ROM:
	633	result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_ROM);
	634	if (result)
	635	pr_debug("%s:%u ps3_setup_storage_dev failed\n",
	636	__func__, __LINE__);
	637	break;
	638
	639	case PS3_DEV_TYPE_STOR_FLASH:
	640	result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_FLASH);
	641	if (result)
	642	pr_debug("%s:%u ps3_setup_storage_dev failed\n",
	643	__func__, __LINE__);
	644	break;
	645
ffbdd246 GL	646	default:
	647	result = 0;
	648	pr_debug("%s:%u: unsupported dev_type %u\n", __func__, __LINE__,
	649	repo->dev_type);
	650	}
	651
	652	return result;
	653	}
	654
	655	/**
	656	* ps3_probe_thread - Background repository probing at system startup.
	657	*
	658	* This implementation only supports background probing on a single bus.
	659	*/
	660
	661	static int ps3_probe_thread(void *data)
	662	{
	663	struct ps3_repository_device *repo = data;
	664	int result;
	665	unsigned int ms = 250;
	666
	667	pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__);
	668
	669	do {
	670	try_to_freeze();
	671
	672	pr_debug("%s:%u: probing...\n", __func__, __LINE__);
	673
	674	do {
	675	result = ps3_repository_find_device(repo);
	676
	677	if (result == -ENODEV)
	678	pr_debug("%s:%u: nothing new\n", __func__,
	679	__LINE__);
	680	else if (result)
	681	pr_debug("%s:%u: find device error.\n",
	682	__func__, __LINE__);
	683	else {
	684	pr_debug("%s:%u: found device\n", __func__,
	685	__LINE__);
	686	ps3_register_repository_device(repo);
	687	ps3_repository_bump_device(repo);
	688	ms = 250;
	689	}
	690	} while (!result);
	691
	692	pr_debug("%s:%u: ms %u\n", __func__, __LINE__, ms);
	693
	694	if ( ms > 60000)
	695	break;
	696
	697	msleep_interruptible(ms);
	698
	699	/* An exponential backoff. */
	700	ms <<= 1;
	701
	702	} while (!kthread_should_stop());
	703
	704	pr_debug(" <- %s:%u: kthread finished\n", __func__, __LINE__);
	705
	706	return 0;
	707	}
	708
	709	/**
710	* ps3_start_probe_thread - Starts the background probe thread.
711	*
712	*/
713
714	static int __init ps3_start_probe_thread(enum ps3_bus_type bus_type)
715	{
716	int result;
717	struct task_struct *task;
718	static struct ps3_repository_device repo; /* must be static */
719
720	pr_debug(" -> %s:%d\n", __func__, __LINE__);
721
722	memset(&repo, 0, sizeof(repo));
723
724	repo.bus_type = bus_type;
725
726	result = ps3_repository_find_bus(repo.bus_type, 0, &repo.bus_index);
727
728	if (result) {
729	printk(KERN_ERR "%s: Cannot find bus (%d)\n", __func__, result);
730	return -ENODEV;
731	}
732
733	result = ps3_repository_read_bus_id(repo.bus_index, &repo.bus_id);
734
735	if (result) {
736	printk(KERN_ERR "%s: read_bus_id failed %d\n", __func__,
737	result);
738	return -ENODEV;
739	}
740
741	task = kthread_run(ps3_probe_thread, &repo, "ps3-probe-%u", bus_type);
742
743	if (IS_ERR(task)) {
744	result = PTR_ERR(task);
745	printk(KERN_ERR "%s: kthread_run failed %d\n", __func__,
746	result);
747	return result;
748	}
749
750	pr_debug(" <- %s:%d\n", __func__, __LINE__);
751	return 0;
752	}
753
754	/**
755	* ps3_register_devices - Probe the system and register devices found.
756	*
757	* A device_initcall() routine.
758	*/
759
760	static int __init ps3_register_devices(void)
761	{
762	int result;
763
764	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
765	return -ENODEV;
766
767	pr_debug(" -> %s:%d\n", __func__, __LINE__);
768
769	/* ps3_repository_dump_bus_info(); */
770
771	result = ps3_start_probe_thread(PS3_BUS_TYPE_STORAGE);
772
773	ps3_register_vuart_devices();
774
775	ps3_register_graphics_devices();
776
777	ps3_repository_find_devices(PS3_BUS_TYPE_SB,
778	ps3_register_repository_device);
779
780	ps3_register_sound_devices();
781
782	pr_debug(" <- %s:%d\n", __func__, __LINE__);
783	return 0;
784	}
785
786	device_initcall(ps3_register_devices);