![Fabian Frederick](/assets/img/avatar_default.png)
There was only one use of __initdata_refok and __exit_refok
__init_refok was used 46 times against 82 for __ref.
Those definitions are obsolete since commit 312b1485fb
("Introduce new
section reference annotations tags: __ref, __refdata, __refconst")
This patch removes the following compatibility definitions and replaces
them treewide.
/* compatibility defines */
#define __init_refok __ref
#define __initdata_refok __refdata
#define __exit_refok __ref
I can also provide separate patches if necessary.
(One patch per tree and check in 1 month or 2 to remove old definitions)
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/1466796271-3043-1-git-send-email-fabf@skynet.be
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
992 lines
23 KiB
C
992 lines
23 KiB
C
/*
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* PS3 device registration routines.
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*
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* Copyright (C) 2007 Sony Computer Entertainment Inc.
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* Copyright 2007 Sony Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/delay.h>
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#include <linux/freezer.h>
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#include <linux/kernel.h>
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#include <linux/kthread.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/reboot.h>
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#include <asm/firmware.h>
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#include <asm/lv1call.h>
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#include <asm/ps3stor.h>
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#include "platform.h"
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static int __init ps3_register_lpm_devices(void)
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{
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int result;
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u64 tmp1;
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u64 tmp2;
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struct ps3_system_bus_device *dev;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev)
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return -ENOMEM;
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dev->match_id = PS3_MATCH_ID_LPM;
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dev->dev_type = PS3_DEVICE_TYPE_LPM;
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/* The current lpm driver only supports a single BE processor. */
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result = ps3_repository_read_be_node_id(0, &dev->lpm.node_id);
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if (result) {
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pr_debug("%s:%d: ps3_repository_read_be_node_id failed \n",
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__func__, __LINE__);
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goto fail_read_repo;
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}
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result = ps3_repository_read_lpm_privileges(dev->lpm.node_id, &tmp1,
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&dev->lpm.rights);
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if (result) {
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pr_debug("%s:%d: ps3_repository_read_lpm_privleges failed \n",
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__func__, __LINE__);
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goto fail_read_repo;
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}
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lv1_get_logical_partition_id(&tmp2);
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if (tmp1 != tmp2) {
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pr_debug("%s:%d: wrong lpar\n",
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__func__, __LINE__);
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result = -ENODEV;
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goto fail_rights;
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}
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if (!(dev->lpm.rights & PS3_LPM_RIGHTS_USE_LPM)) {
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pr_debug("%s:%d: don't have rights to use lpm\n",
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__func__, __LINE__);
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result = -EPERM;
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goto fail_rights;
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}
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pr_debug("%s:%d: pu_id %llu, rights %llu(%llxh)\n",
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__func__, __LINE__, dev->lpm.pu_id, dev->lpm.rights,
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dev->lpm.rights);
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result = ps3_repository_read_pu_id(0, &dev->lpm.pu_id);
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if (result) {
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pr_debug("%s:%d: ps3_repository_read_pu_id failed \n",
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__func__, __LINE__);
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goto fail_read_repo;
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}
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result = ps3_system_bus_device_register(dev);
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if (result) {
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_register;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return 0;
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fail_register:
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fail_rights:
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fail_read_repo:
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kfree(dev);
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pr_debug(" <- %s:%d: failed\n", __func__, __LINE__);
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return result;
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}
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/**
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* ps3_setup_gelic_device - Setup and register a gelic device instance.
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*
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* Allocates memory for a struct ps3_system_bus_device instance, initialises the
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* structure members, and registers the device instance with the system bus.
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*/
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static int __init ps3_setup_gelic_device(
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const struct ps3_repository_device *repo)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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struct ps3_dma_region d_region;
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} *p;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
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BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_GELIC);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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if (!p) {
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result = -ENOMEM;
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goto fail_malloc;
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}
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p->dev.match_id = PS3_MATCH_ID_GELIC;
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p->dev.dev_type = PS3_DEVICE_TYPE_SB;
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p->dev.bus_id = repo->bus_id;
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p->dev.dev_id = repo->dev_id;
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p->dev.d_region = &p->d_region;
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result = ps3_repository_find_interrupt(repo,
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PS3_INTERRUPT_TYPE_EVENT_PORT, &p->dev.interrupt_id);
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if (result) {
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pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
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__func__, __LINE__);
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goto fail_find_interrupt;
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}
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BUG_ON(p->dev.interrupt_id != 0);
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result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
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PS3_DMA_OTHER, NULL, 0);
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if (result) {
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pr_debug("%s:%d ps3_dma_region_init failed\n",
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__func__, __LINE__);
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goto fail_dma_init;
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}
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result = ps3_system_bus_device_register(&p->dev);
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if (result) {
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_device_register;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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fail_device_register:
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fail_dma_init:
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fail_find_interrupt:
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kfree(p);
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fail_malloc:
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pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
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return result;
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}
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static int __ref ps3_setup_uhc_device(
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const struct ps3_repository_device *repo, enum ps3_match_id match_id,
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enum ps3_interrupt_type interrupt_type, enum ps3_reg_type reg_type)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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struct ps3_dma_region d_region;
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struct ps3_mmio_region m_region;
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} *p;
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u64 bus_addr;
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u64 len;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
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BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_USB);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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if (!p) {
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result = -ENOMEM;
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goto fail_malloc;
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}
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p->dev.match_id = match_id;
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p->dev.dev_type = PS3_DEVICE_TYPE_SB;
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p->dev.bus_id = repo->bus_id;
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p->dev.dev_id = repo->dev_id;
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p->dev.d_region = &p->d_region;
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p->dev.m_region = &p->m_region;
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result = ps3_repository_find_interrupt(repo,
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interrupt_type, &p->dev.interrupt_id);
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if (result) {
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pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
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__func__, __LINE__);
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goto fail_find_interrupt;
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}
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result = ps3_repository_find_reg(repo, reg_type,
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&bus_addr, &len);
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if (result) {
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pr_debug("%s:%d ps3_repository_find_reg failed\n",
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__func__, __LINE__);
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goto fail_find_reg;
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}
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result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
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PS3_DMA_INTERNAL, NULL, 0);
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if (result) {
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pr_debug("%s:%d ps3_dma_region_init failed\n",
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__func__, __LINE__);
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goto fail_dma_init;
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}
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result = ps3_mmio_region_init(&p->dev, p->dev.m_region, bus_addr, len,
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PS3_MMIO_4K);
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if (result) {
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pr_debug("%s:%d ps3_mmio_region_init failed\n",
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__func__, __LINE__);
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goto fail_mmio_init;
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}
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result = ps3_system_bus_device_register(&p->dev);
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if (result) {
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_device_register;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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fail_device_register:
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fail_mmio_init:
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fail_dma_init:
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fail_find_reg:
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fail_find_interrupt:
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kfree(p);
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fail_malloc:
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pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_setup_ehci_device(
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const struct ps3_repository_device *repo)
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{
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return ps3_setup_uhc_device(repo, PS3_MATCH_ID_EHCI,
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PS3_INTERRUPT_TYPE_SB_EHCI, PS3_REG_TYPE_SB_EHCI);
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}
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static int __init ps3_setup_ohci_device(
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const struct ps3_repository_device *repo)
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{
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return ps3_setup_uhc_device(repo, PS3_MATCH_ID_OHCI,
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PS3_INTERRUPT_TYPE_SB_OHCI, PS3_REG_TYPE_SB_OHCI);
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}
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static int __init ps3_setup_vuart_device(enum ps3_match_id match_id,
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unsigned int port_number)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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} *p;
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pr_debug(" -> %s:%d: match_id %u, port %u\n", __func__, __LINE__,
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match_id, port_number);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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if (!p)
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return -ENOMEM;
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p->dev.match_id = match_id;
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p->dev.dev_type = PS3_DEVICE_TYPE_VUART;
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p->dev.port_number = port_number;
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result = ps3_system_bus_device_register(&p->dev);
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if (result) {
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_device_register;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return 0;
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fail_device_register:
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kfree(p);
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pr_debug(" <- %s:%d fail\n", __func__, __LINE__);
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return result;
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}
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static int ps3_setup_storage_dev(const struct ps3_repository_device *repo,
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enum ps3_match_id match_id)
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{
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int result;
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struct ps3_storage_device *p;
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u64 port, blk_size, num_blocks;
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unsigned int num_regions, i;
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pr_debug(" -> %s:%u: match_id %u\n", __func__, __LINE__, match_id);
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result = ps3_repository_read_stor_dev_info(repo->bus_index,
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repo->dev_index, &port,
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&blk_size, &num_blocks,
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&num_regions);
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if (result) {
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printk(KERN_ERR "%s:%u: _read_stor_dev_info failed %d\n",
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__func__, __LINE__, result);
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return -ENODEV;
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}
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pr_debug("%s:%u: (%u:%u:%u): port %llu blk_size %llu num_blocks %llu "
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"num_regions %u\n", __func__, __LINE__, repo->bus_index,
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repo->dev_index, repo->dev_type, port, blk_size, num_blocks,
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num_regions);
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p = kzalloc(sizeof(struct ps3_storage_device) +
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num_regions * sizeof(struct ps3_storage_region),
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GFP_KERNEL);
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if (!p) {
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result = -ENOMEM;
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goto fail_malloc;
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}
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p->sbd.match_id = match_id;
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p->sbd.dev_type = PS3_DEVICE_TYPE_SB;
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p->sbd.bus_id = repo->bus_id;
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p->sbd.dev_id = repo->dev_id;
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p->sbd.d_region = &p->dma_region;
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p->blk_size = blk_size;
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p->num_regions = num_regions;
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result = ps3_repository_find_interrupt(repo,
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PS3_INTERRUPT_TYPE_EVENT_PORT,
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&p->sbd.interrupt_id);
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if (result) {
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printk(KERN_ERR "%s:%u: find_interrupt failed %d\n", __func__,
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__LINE__, result);
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result = -ENODEV;
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goto fail_find_interrupt;
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}
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for (i = 0; i < num_regions; i++) {
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unsigned int id;
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u64 start, size;
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result = ps3_repository_read_stor_dev_region(repo->bus_index,
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repo->dev_index,
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i, &id, &start,
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&size);
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if (result) {
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printk(KERN_ERR
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"%s:%u: read_stor_dev_region failed %d\n",
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__func__, __LINE__, result);
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result = -ENODEV;
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goto fail_read_region;
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}
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pr_debug("%s:%u: region %u: id %u start %llu size %llu\n",
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__func__, __LINE__, i, id, start, size);
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p->regions[i].id = id;
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p->regions[i].start = start;
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p->regions[i].size = size;
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}
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result = ps3_system_bus_device_register(&p->sbd);
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if (result) {
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pr_debug("%s:%u ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_device_register;
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}
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pr_debug(" <- %s:%u\n", __func__, __LINE__);
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return 0;
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fail_device_register:
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fail_read_region:
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fail_find_interrupt:
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kfree(p);
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fail_malloc:
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pr_debug(" <- %s:%u: fail.\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_register_vuart_devices(void)
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{
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int result;
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unsigned int port_number;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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result = ps3_repository_read_vuart_av_port(&port_number);
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if (result)
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port_number = 0; /* av default */
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result = ps3_setup_vuart_device(PS3_MATCH_ID_AV_SETTINGS, port_number);
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WARN_ON(result);
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result = ps3_repository_read_vuart_sysmgr_port(&port_number);
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if (result)
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port_number = 2; /* sysmgr default */
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result = ps3_setup_vuart_device(PS3_MATCH_ID_SYSTEM_MANAGER,
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port_number);
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WARN_ON(result);
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_register_sound_devices(void)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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struct ps3_dma_region d_region;
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struct ps3_mmio_region m_region;
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} *p;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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p = kzalloc(sizeof(*p), GFP_KERNEL);
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if (!p)
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return -ENOMEM;
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p->dev.match_id = PS3_MATCH_ID_SOUND;
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p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
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p->dev.d_region = &p->d_region;
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p->dev.m_region = &p->m_region;
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result = ps3_system_bus_device_register(&p->dev);
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if (result) {
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_device_register;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return 0;
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fail_device_register:
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kfree(p);
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pr_debug(" <- %s:%d failed\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_register_graphics_devices(void)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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} *p;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
p->dev.match_id = PS3_MATCH_ID_GPU;
|
|
p->dev.match_sub_id = PS3_MATCH_SUB_ID_GPU_FB;
|
|
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__);
|
|
goto fail_device_register;
|
|
}
|
|
|
|
pr_debug(" <- %s:%d\n", __func__, __LINE__);
|
|
return 0;
|
|
|
|
fail_device_register:
|
|
kfree(p);
|
|
pr_debug(" <- %s:%d failed\n", __func__, __LINE__);
|
|
return result;
|
|
}
|
|
|
|
static int __init ps3_register_ramdisk_device(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_GPU;
|
|
p->dev.match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK;
|
|
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__);
|
|
goto fail_device_register;
|
|
}
|
|
|
|
pr_debug(" <- %s:%d\n", __func__, __LINE__);
|
|
return 0;
|
|
|
|
fail_device_register:
|
|
kfree(p);
|
|
pr_debug(" <- %s:%d failed\n", __func__, __LINE__);
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ps3_setup_dynamic_device - Setup a dynamic device from the repository
|
|
*/
|
|
|
|
static int ps3_setup_dynamic_device(const struct ps3_repository_device *repo)
|
|
{
|
|
int result;
|
|
|
|
switch (repo->dev_type) {
|
|
case PS3_DEV_TYPE_STOR_DISK:
|
|
result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_DISK);
|
|
|
|
/* Some devices are not accessible from the Other OS lpar. */
|
|
if (result == -ENODEV) {
|
|
result = 0;
|
|
pr_debug("%s:%u: not accessible\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_setup_static_device - Setup a static device from the repository
|
|
*/
|
|
|
|
static int __init ps3_setup_static_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;
|
|
|
|
default:
|
|
return ps3_setup_dynamic_device(repo);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static void ps3_find_and_add_device(u64 bus_id, u64 dev_id)
|
|
{
|
|
struct ps3_repository_device repo;
|
|
int res;
|
|
unsigned int retries;
|
|
unsigned long rem;
|
|
|
|
/*
|
|
* On some firmware versions (e.g. 1.90), the device may not show up
|
|
* in the repository immediately
|
|
*/
|
|
for (retries = 0; retries < 10; retries++) {
|
|
res = ps3_repository_find_device_by_id(&repo, bus_id, dev_id);
|
|
if (!res)
|
|
goto found;
|
|
|
|
rem = msleep_interruptible(100);
|
|
if (rem)
|
|
break;
|
|
}
|
|
pr_warning("%s:%u: device %llu:%llu not found\n", __func__, __LINE__,
|
|
bus_id, dev_id);
|
|
return;
|
|
|
|
found:
|
|
if (retries)
|
|
pr_debug("%s:%u: device %llu:%llu found after %u retries\n",
|
|
__func__, __LINE__, bus_id, dev_id, retries);
|
|
|
|
ps3_setup_dynamic_device(&repo);
|
|
return;
|
|
}
|
|
|
|
#define PS3_NOTIFICATION_DEV_ID ULONG_MAX
|
|
#define PS3_NOTIFICATION_INTERRUPT_ID 0
|
|
|
|
struct ps3_notification_device {
|
|
struct ps3_system_bus_device sbd;
|
|
spinlock_t lock;
|
|
u64 tag;
|
|
u64 lv1_status;
|
|
struct completion done;
|
|
};
|
|
|
|
enum ps3_notify_type {
|
|
notify_device_ready = 0,
|
|
notify_region_probe = 1,
|
|
notify_region_update = 2,
|
|
};
|
|
|
|
struct ps3_notify_cmd {
|
|
u64 operation_code; /* must be zero */
|
|
u64 event_mask; /* OR of 1UL << enum ps3_notify_type */
|
|
};
|
|
|
|
struct ps3_notify_event {
|
|
u64 event_type; /* enum ps3_notify_type */
|
|
u64 bus_id;
|
|
u64 dev_id;
|
|
u64 dev_type;
|
|
u64 dev_port;
|
|
};
|
|
|
|
static irqreturn_t ps3_notification_interrupt(int irq, void *data)
|
|
{
|
|
struct ps3_notification_device *dev = data;
|
|
int res;
|
|
u64 tag, status;
|
|
|
|
spin_lock(&dev->lock);
|
|
res = lv1_storage_get_async_status(PS3_NOTIFICATION_DEV_ID, &tag,
|
|
&status);
|
|
if (tag != dev->tag)
|
|
pr_err("%s:%u: tag mismatch, got %llx, expected %llx\n",
|
|
__func__, __LINE__, tag, dev->tag);
|
|
|
|
if (res) {
|
|
pr_err("%s:%u: res %d status 0x%llx\n", __func__, __LINE__, res,
|
|
status);
|
|
} else {
|
|
pr_debug("%s:%u: completed, status 0x%llx\n", __func__,
|
|
__LINE__, status);
|
|
dev->lv1_status = status;
|
|
complete(&dev->done);
|
|
}
|
|
spin_unlock(&dev->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int ps3_notification_read_write(struct ps3_notification_device *dev,
|
|
u64 lpar, int write)
|
|
{
|
|
const char *op = write ? "write" : "read";
|
|
unsigned long flags;
|
|
int res;
|
|
|
|
init_completion(&dev->done);
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
res = write ? lv1_storage_write(dev->sbd.dev_id, 0, 0, 1, 0, lpar,
|
|
&dev->tag)
|
|
: lv1_storage_read(dev->sbd.dev_id, 0, 0, 1, 0, lpar,
|
|
&dev->tag);
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
if (res) {
|
|
pr_err("%s:%u: %s failed %d\n", __func__, __LINE__, op, res);
|
|
return -EPERM;
|
|
}
|
|
pr_debug("%s:%u: notification %s issued\n", __func__, __LINE__, op);
|
|
|
|
res = wait_event_interruptible(dev->done.wait,
|
|
dev->done.done || kthread_should_stop());
|
|
if (kthread_should_stop())
|
|
res = -EINTR;
|
|
if (res) {
|
|
pr_debug("%s:%u: interrupted %s\n", __func__, __LINE__, op);
|
|
return res;
|
|
}
|
|
|
|
if (dev->lv1_status) {
|
|
pr_err("%s:%u: %s not completed, status 0x%llx\n", __func__,
|
|
__LINE__, op, dev->lv1_status);
|
|
return -EIO;
|
|
}
|
|
pr_debug("%s:%u: notification %s completed\n", __func__, __LINE__, op);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct task_struct *probe_task;
|
|
|
|
/**
|
|
* ps3_probe_thread - Background repository probing at system startup.
|
|
*
|
|
* This implementation only supports background probing on a single bus.
|
|
* It uses the hypervisor's storage device notification mechanism to wait until
|
|
* a storage device is ready. The device notification mechanism uses a
|
|
* pseudo device to asynchronously notify the guest when storage devices become
|
|
* ready. The notification device has a block size of 512 bytes.
|
|
*/
|
|
|
|
static int ps3_probe_thread(void *data)
|
|
{
|
|
struct ps3_notification_device dev;
|
|
int res;
|
|
unsigned int irq;
|
|
u64 lpar;
|
|
void *buf;
|
|
struct ps3_notify_cmd *notify_cmd;
|
|
struct ps3_notify_event *notify_event;
|
|
|
|
pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__);
|
|
|
|
buf = kzalloc(512, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
lpar = ps3_mm_phys_to_lpar(__pa(buf));
|
|
notify_cmd = buf;
|
|
notify_event = buf;
|
|
|
|
/* dummy system bus device */
|
|
dev.sbd.bus_id = (u64)data;
|
|
dev.sbd.dev_id = PS3_NOTIFICATION_DEV_ID;
|
|
dev.sbd.interrupt_id = PS3_NOTIFICATION_INTERRUPT_ID;
|
|
|
|
res = lv1_open_device(dev.sbd.bus_id, dev.sbd.dev_id, 0);
|
|
if (res) {
|
|
pr_err("%s:%u: lv1_open_device failed %s\n", __func__,
|
|
__LINE__, ps3_result(res));
|
|
goto fail_free;
|
|
}
|
|
|
|
res = ps3_sb_event_receive_port_setup(&dev.sbd, PS3_BINDING_CPU_ANY,
|
|
&irq);
|
|
if (res) {
|
|
pr_err("%s:%u: ps3_sb_event_receive_port_setup failed %d\n",
|
|
__func__, __LINE__, res);
|
|
goto fail_close_device;
|
|
}
|
|
|
|
spin_lock_init(&dev.lock);
|
|
|
|
res = request_irq(irq, ps3_notification_interrupt, 0,
|
|
"ps3_notification", &dev);
|
|
if (res) {
|
|
pr_err("%s:%u: request_irq failed %d\n", __func__, __LINE__,
|
|
res);
|
|
goto fail_sb_event_receive_port_destroy;
|
|
}
|
|
|
|
/* Setup and write the request for device notification. */
|
|
notify_cmd->operation_code = 0; /* must be zero */
|
|
notify_cmd->event_mask = 1UL << notify_region_probe;
|
|
|
|
res = ps3_notification_read_write(&dev, lpar, 1);
|
|
if (res)
|
|
goto fail_free_irq;
|
|
|
|
/* Loop here processing the requested notification events. */
|
|
do {
|
|
try_to_freeze();
|
|
|
|
memset(notify_event, 0, sizeof(*notify_event));
|
|
|
|
res = ps3_notification_read_write(&dev, lpar, 0);
|
|
if (res)
|
|
break;
|
|
|
|
pr_debug("%s:%u: notify event type 0x%llx bus id %llu dev id %llu"
|
|
" type %llu port %llu\n", __func__, __LINE__,
|
|
notify_event->event_type, notify_event->bus_id,
|
|
notify_event->dev_id, notify_event->dev_type,
|
|
notify_event->dev_port);
|
|
|
|
if (notify_event->event_type != notify_region_probe ||
|
|
notify_event->bus_id != dev.sbd.bus_id) {
|
|
pr_warning("%s:%u: bad notify_event: event %llu, "
|
|
"dev_id %llu, dev_type %llu\n",
|
|
__func__, __LINE__, notify_event->event_type,
|
|
notify_event->dev_id,
|
|
notify_event->dev_type);
|
|
continue;
|
|
}
|
|
|
|
ps3_find_and_add_device(dev.sbd.bus_id, notify_event->dev_id);
|
|
|
|
} while (!kthread_should_stop());
|
|
|
|
fail_free_irq:
|
|
free_irq(irq, &dev);
|
|
fail_sb_event_receive_port_destroy:
|
|
ps3_sb_event_receive_port_destroy(&dev.sbd, irq);
|
|
fail_close_device:
|
|
lv1_close_device(dev.sbd.bus_id, dev.sbd.dev_id);
|
|
fail_free:
|
|
kfree(buf);
|
|
|
|
probe_task = NULL;
|
|
|
|
pr_debug(" <- %s:%u: kthread finished\n", __func__, __LINE__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ps3_stop_probe_thread - Stops the background probe thread.
|
|
*
|
|
*/
|
|
|
|
static int ps3_stop_probe_thread(struct notifier_block *nb, unsigned long code,
|
|
void *data)
|
|
{
|
|
if (probe_task)
|
|
kthread_stop(probe_task);
|
|
return 0;
|
|
}
|
|
|
|
static struct notifier_block nb = {
|
|
.notifier_call = ps3_stop_probe_thread
|
|
};
|
|
|
|
/**
|
|
* 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;
|
|
struct ps3_repository_device repo;
|
|
|
|
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, (void *)repo.bus_id,
|
|
"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;
|
|
}
|
|
|
|
probe_task = task;
|
|
register_reboot_notifier(&nb);
|
|
|
|
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_setup_static_device);
|
|
|
|
ps3_register_sound_devices();
|
|
|
|
ps3_register_lpm_devices();
|
|
|
|
ps3_register_ramdisk_device();
|
|
|
|
pr_debug(" <- %s:%d\n", __func__, __LINE__);
|
|
return 0;
|
|
}
|
|
|
|
device_initcall(ps3_register_devices);
|