1
linux/arch/powerpc/platforms/ps3/device-init.c
Geoff Levand 75cdff9242 [POWERPC] PS3: Enhance storage probe debug output
Add some more info to the PS3 storage probe debug output.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14 01:33:26 +10:00

795 lines
19 KiB
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: (%u:%u:%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;
}
pr_debug("%s:%d: notify event (%u:%u:%u): event_type 0x%lx, "
"port %lu\n", __func__, __LINE__, repo->bus_index,
repo->dev_index, repo->dev_type,
notify_event->event_type, notify_event->dev_port);
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 (%u:%u:%u)\n", __func__,
__LINE__, repo->bus_index, repo->dev_index,
repo->dev_type);
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: (%u:%u:%u): port %lu blk_size %lu num_blocks %lu "
"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;
}
/* 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 (%u:%u:%u)\n",
__func__, __LINE__, repo->bus_index,
repo->dev_index, repo->dev_type);
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);