Commit ffbdd246 authored by Geoff Levand's avatar Geoff Levand Committed by Paul Mackerras

[POWERPC] PS3: Device registration routines.

Add routines to probe devices present on the system
and to register those devices with the LDM.
Signed-off-by: default avatarGeoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 9e6b99bd
......@@ -4,3 +4,4 @@ obj-y += system-bus.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_SPU_BASE) += spu.o
obj-y += device-init.o
/*
* 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 "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 __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;
default:
result = 0;
pr_debug("%s:%u: unsupported dev_type %u\n", __func__, __LINE__,
repo->dev_type);
}
return result;
}
/**
* ps3_probe_thread - Background repository probing at system startup.
*
* This implementation only supports background probing on a single bus.
*/
static int ps3_probe_thread(void *data)
{
struct ps3_repository_device *repo = data;
int result;
unsigned int ms = 250;
pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__);
do {
try_to_freeze();
pr_debug("%s:%u: probing...\n", __func__, __LINE__);
do {
result = ps3_repository_find_device(repo);
if (result == -ENODEV)
pr_debug("%s:%u: nothing new\n", __func__,
__LINE__);
else if (result)
pr_debug("%s:%u: find device error.\n",
__func__, __LINE__);
else {
pr_debug("%s:%u: found device\n", __func__,
__LINE__);
ps3_register_repository_device(repo);
ps3_repository_bump_device(repo);
ms = 250;
}
} while (!result);
pr_debug("%s:%u: ms %u\n", __func__, __LINE__, ms);
if ( ms > 60000)
break;
msleep_interruptible(ms);
/* An exponential backoff. */
ms <<= 1;
} while (!kthread_should_stop());
pr_debug(" <- %s:%u: kthread finished\n", __func__, __LINE__);
return 0;
}
/**
* ps3_start_probe_thread - Starts the background probe thread.
*
*/
static int __init ps3_start_probe_thread(enum ps3_bus_type bus_type)
{
int result;
struct task_struct *task;
static struct ps3_repository_device repo; /* must be static */
pr_debug(" -> %s:%d\n", __func__, __LINE__);
memset(&repo, 0, sizeof(repo));
repo.bus_type = bus_type;
result = ps3_repository_find_bus(repo.bus_type, 0, &repo.bus_index);
if (result) {
printk(KERN_ERR "%s: Cannot find bus (%d)\n", __func__, result);
return -ENODEV;
}
result = ps3_repository_read_bus_id(repo.bus_index, &repo.bus_id);
if (result) {
printk(KERN_ERR "%s: read_bus_id failed %d\n", __func__,
result);
return -ENODEV;
}
task = kthread_run(ps3_probe_thread, &repo, "ps3-probe-%u", bus_type);
if (IS_ERR(task)) {
result = PTR_ERR(task);
printk(KERN_ERR "%s: kthread_run failed %d\n", __func__,
result);
return result;
}
pr_debug(" <- %s:%d\n", __func__, __LINE__);
return 0;
}
/**
* ps3_register_devices - Probe the system and register devices found.
*
* A device_initcall() routine.
*/
static int __init ps3_register_devices(void)
{
int result;
if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
return -ENODEV;
pr_debug(" -> %s:%d\n", __func__, __LINE__);
/* ps3_repository_dump_bus_info(); */
result = ps3_start_probe_thread(PS3_BUS_TYPE_STORAGE);
ps3_register_vuart_devices();
ps3_register_graphics_devices();
ps3_repository_find_devices(PS3_BUS_TYPE_SB,
ps3_register_repository_device);
ps3_register_sound_devices();
pr_debug(" <- %s:%d\n", __func__, __LINE__);
return 0;
}
device_initcall(ps3_register_devices);
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment