path: root/arch/powerpc/platforms/ps3/device-init.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  PS3 device registration routines.
 *
 *  Copyright (C) 2007 Sony Computer Entertainment Inc.
 *  Copyright 2007 Sony Corp.
 */

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

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

#include "platform.h"

static int __init ps3_register_lpm_devices(void)
{
	int result;
	u64 tmp1;
	u64 tmp2;
	struct ps3_system_bus_device *dev;

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

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

	dev->match_id = PS3_MATCH_ID_LPM;
	dev->dev_type = PS3_DEVICE_TYPE_LPM;

	/* The current lpm driver only supports a single BE processor. */

	result = ps3_repository_read_be_node_id(0, &dev->lpm.node_id);

	if (result) {
		pr_debug("%s:%d: ps3_repository_read_be_node_id failed \n",
			__func__, __LINE__);
		goto fail_read_repo;
	}

	result = ps3_repository_read_lpm_privileges(dev->lpm.node_id, &tmp1,
		&dev->lpm.rights);

	if (result) {
		pr_debug("%s:%d: ps3_repository_read_lpm_privileges failed\n",
			__func__, __LINE__);
		goto fail_read_repo;
	}

	lv1_get_logical_partition_id(&tmp2);

	if (tmp1 != tmp2) {
		pr_debug("%s:%d: wrong lpar\n",
			__func__, __LINE__);
		result = -ENODEV;
		goto fail_rights;
	}

	if (!(dev->lpm.rights & PS3_LPM_RIGHTS_USE_LPM)) {
		pr_debug("%s:%d: don't have rights to use lpm\n",
			__func__, __LINE__);
		result = -EPERM;
		goto fail_rights;
	}

	pr_debug("%s:%d: pu_id %llu, rights %llu(%llxh)\n",
		__func__, __LINE__, dev->lpm.pu_id, dev->lpm.rights,
		dev->lpm.rights);

	result = ps3_repository_read_pu_id(0, &dev->lpm.pu_id);

	if (result) {
		pr_debug("%s:%d: ps3_repository_read_pu_id failed \n",
			__func__, __LINE__);
		goto fail_read_repo;
	}

	result = ps3_system_bus_device_register(dev);

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

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


fail_register:
fail_rights:
fail_read_repo:
	kfree(dev);
	pr_debug(" <- %s:%d: failed\n", __func__, __LINE__);
	return result;
}

/**
 * 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 __ref 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