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975 lines
22 KiB
975 lines
22 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
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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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#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 <linux/rcuwait.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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int result; |
|
u64 tmp1; |
|
u64 tmp2; |
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struct ps3_system_bus_device *dev; |
|
|
|
pr_debug(" -> %s:%d\n", __func__, __LINE__); |
|
|
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dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
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if (!dev) |
|
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); |
|
|
|
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); |
|
|
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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; |
|
} |
|
|
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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__); |
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return 0; |
|
|
|
|
|
fail_register: |
|
fail_rights: |
|
fail_read_repo: |
|
kfree(dev); |
|
pr_debug(" <- %s:%d: failed\n", __func__, __LINE__); |
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return result; |
|
} |
|
|
|
/** |
|
* 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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static int __init ps3_setup_gelic_device( |
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const struct ps3_repository_device *repo) |
|
{ |
|
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; |
|
} *p; |
|
|
|
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); |
|
|
|
if (!p) { |
|
result = -ENOMEM; |
|
goto fail_malloc; |
|
} |
|
|
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p->dev.match_id = PS3_MATCH_ID_GELIC; |
|
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; |
|
|
|
result = ps3_repository_find_interrupt(repo, |
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PS3_INTERRUPT_TYPE_EVENT_PORT, &p->dev.interrupt_id); |
|
|
|
if (result) { |
|
pr_debug("%s:%d ps3_repository_find_interrupt failed\n", |
|
__func__, __LINE__); |
|
goto fail_find_interrupt; |
|
} |
|
|
|
BUG_ON(p->dev.interrupt_id != 0); |
|
|
|
result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K, |
|
PS3_DMA_OTHER, NULL, 0); |
|
|
|
if (result) { |
|
pr_debug("%s:%d ps3_dma_region_init failed\n", |
|
__func__, __LINE__); |
|
goto fail_dma_init; |
|
} |
|
|
|
result = ps3_system_bus_device_register(&p->dev); |
|
|
|
if (result) { |
|
pr_debug("%s:%d ps3_system_bus_device_register failed\n", |
|
__func__, __LINE__); |
|
goto fail_device_register; |
|
} |
|
|
|
pr_debug(" <- %s:%d\n", __func__, __LINE__); |
|
return result; |
|
|
|
fail_device_register: |
|
fail_dma_init: |
|
fail_find_interrupt: |
|
kfree(p); |
|
fail_malloc: |
|
pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__); |
|
return result; |
|
} |
|
|
|
static int __ref ps3_setup_uhc_device( |
|
const struct ps3_repository_device *repo, enum ps3_match_id match_id, |
|
enum ps3_interrupt_type interrupt_type, enum ps3_reg_type reg_type) |
|
{ |
|
int result; |
|
struct layout { |
|
struct ps3_system_bus_device dev; |
|
struct ps3_dma_region d_region; |
|
struct ps3_mmio_region m_region; |
|
} *p; |
|
u64 bus_addr; |
|
u64 len; |
|
|
|
pr_debug(" -> %s:%d\n", __func__, __LINE__); |
|
|
|
BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB); |
|
BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_USB); |
|
|
|
p = kzalloc(sizeof(struct layout), GFP_KERNEL); |
|
|
|
if (!p) { |
|
result = -ENOMEM; |
|
goto fail_malloc; |
|
} |
|
|
|
p->dev.match_id = match_id; |
|
p->dev.dev_type = PS3_DEVICE_TYPE_SB; |
|
p->dev.bus_id = repo->bus_id; |
|
p->dev.dev_id = repo->dev_id; |
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p->dev.d_region = &p->d_region; |
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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__); |
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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, |
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PS3_INTERRUPT_TYPE_SB_EHCI, PS3_REG_TYPE_SB_EHCI); |
|
} |
|
|
|
static int __init ps3_setup_ohci_device( |
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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); |
|
} |
|
|
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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); |
|
|
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p = kzalloc(sizeof(struct layout), GFP_KERNEL); |
|
|
|
if (!p) |
|
return -ENOMEM; |
|
|
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p->dev.match_id = match_id; |
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p->dev.dev_type = PS3_DEVICE_TYPE_VUART; |
|
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", |
|
__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; |
|
} |
|
|
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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; |
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u64 port, blk_size, num_blocks; |
|
unsigned int num_regions, i; |
|
|
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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(struct_size(p, regions, num_regions), 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; |
|
} |
|
|
|
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__); |
|
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_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; |
|
} |
|
|
|
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_warn("%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 rcuwait wait; |
|
bool 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; |
|
dev->done = true; |
|
rcuwait_wake_up(&dev->wait); |
|
} |
|
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; |
|
|
|
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); |
|
dev->done = false; |
|
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); |
|
|
|
rcuwait_wait_event(&dev->wait, dev->done || kthread_should_stop(), TASK_IDLE); |
|
|
|
if (kthread_should_stop()) |
|
res = -EINTR; |
|
|
|
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); |
|
rcuwait_init(&dev.wait); |
|
|
|
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_warn("%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);
|
|
|