Release 4.14 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 <linux/slab.h>
#include <linux/reboot.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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 318 | 99.38% | 1 | 33.33% |
| Stephen Rothwell | 1 | 0.31% | 1 | 33.33% |
| Colin Ian King | 1 | 0.31% | 1 | 33.33% |
| Total | 320 | 100.00% | 3 | 100.00% |
/**
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 285 | 100.00% | 1 | 100.00% |
| Total | 285 | 100.00% | 1 | 100.00% |
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.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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 383 | 99.74% | 1 | 50.00% |
| Fabian Frederick | 1 | 0.26% | 1 | 50.00% |
| Total | 384 | 100.00% | 2 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
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__);
goto fail_device_register;
}
pr_debug(" <- %s:%d\n", __func__, __LINE__);
return 0;
fail_device_register:
kfree(p);
pr_debug(" <- %s:%d fail\n", __func__, __LINE__);
return result;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 123 | 83.67% | 1 | 50.00% |
| Masakazu Mokuno | 24 | 16.33% | 1 | 50.00% |
| Total | 147 | 100.00% | 2 | 100.00% |
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: (%u:%u:%u): port %llu blk_size %llu num_blocks %llu "
"num_regions %u\n", __func__, __LINE__, repo->bus_index,
repo->dev_index, repo->dev_type, 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;
}
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 %llu size %llu\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_find_interrupt:
kfree(p);
fail_malloc:
pr_debug(" <- %s:%u: fail.\n", __func__, __LINE__);
return result;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 371 | 82.26% | 3 | 50.00% |
| Geoff Levand | 78 | 17.29% | 2 | 33.33% |
| Stephen Rothwell | 2 | 0.44% | 1 | 16.67% |
| Total | 451 | 100.00% | 6 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 98 | 98.99% | 2 | 66.67% |
| Geoff Levand | 1 | 1.01% | 1 | 33.33% |
| Total | 99 | 100.00% | 3 | 100.00% |
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__);
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 135 | 84.91% | 2 | 66.67% |
| Masakazu Mokuno | 24 | 15.09% | 1 | 33.33% |
| Total | 159 | 100.00% | 3 | 100.00% |
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_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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 106 | 77.37% | 3 | 60.00% |
| Masakazu Mokuno | 31 | 22.63% | 2 | 40.00% |
| Total | 137 | 100.00% | 5 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jim Paris | 137 | 100.00% | 1 | 100.00% |
| Total | 137 | 100.00% | 1 | 100.00% |
/**
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 143 | 98.62% | 3 | 75.00% |
| Uwe Kleine-König | 2 | 1.38% | 1 | 25.00% |
| Total | 145 | 100.00% | 4 | 100.00% |
/**
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 109 | 100.00% | 3 | 100.00% |
| Total | 109 | 100.00% | 3 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 115 | 98.29% | 2 | 66.67% |
| Stephen Rothwell | 2 | 1.71% | 1 | 33.33% |
| Total | 117 | 100.00% | 3 | 100.00% |
#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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 127 | 97.69% | 2 | 66.67% |
| Stephen Rothwell | 3 | 2.31% | 1 | 33.33% |
| Total | 130 | 100.00% | 3 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 190 | 79.17% | 2 | 50.00% |
| Geoff Levand | 49 | 20.42% | 1 | 25.00% |
| Stephen Rothwell | 1 | 0.42% | 1 | 25.00% |
| Total | 240 | 100.00% | 4 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 337 | 73.42% | 3 | 42.86% |
| Geoff Levand | 117 | 25.49% | 2 | 28.57% |
| Stephen Rothwell | 4 | 0.87% | 1 | 14.29% |
| Yong Zhang | 1 | 0.22% | 1 | 14.29% |
| Total | 459 | 100.00% | 7 | 100.00% |
/**
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 175 | 91.62% | 1 | 50.00% |
| Geert Uytterhoeven | 16 | 8.38% | 1 | 50.00% |
| Total | 191 | 100.00% | 2 | 100.00% |
/**
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 71 | 94.67% | 2 | 50.00% |
| Jim Paris | 3 | 4.00% | 1 | 25.00% |
| Geert Uytterhoeven | 1 | 1.33% | 1 | 25.00% |
| Total | 75 | 100.00% | 4 | 100.00% |
device_initcall(ps3_register_devices);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geert Uytterhoeven | 1887 | 49.53% | 6 | 33.33% |
| Geoff Levand | 1683 | 44.17% | 3 | 16.67% |
| Jim Paris | 140 | 3.67% | 1 | 5.56% |
| Masakazu Mokuno | 79 | 2.07% | 2 | 11.11% |
| Stephen Rothwell | 13 | 0.34% | 1 | 5.56% |
| Tejun Heo | 3 | 0.08% | 1 | 5.56% |
| Uwe Kleine-König | 2 | 0.05% | 1 | 5.56% |
| Colin Ian King | 1 | 0.03% | 1 | 5.56% |
| Yong Zhang | 1 | 0.03% | 1 | 5.56% |
| Fabian Frederick | 1 | 0.03% | 1 | 5.56% |
| Total | 3810 | 100.00% | 18 | 100.00% |
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