Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Geoff Levand | 2125 | 54.94% | 6 | 22.22% |
Geert Uytterhoeven | 1580 | 40.85% | 6 | 22.22% |
Masakazu Mokuno | 68 | 1.76% | 2 | 7.41% |
Peter Zijlstra | 33 | 0.85% | 1 | 3.70% |
Jim Paris | 30 | 0.78% | 1 | 3.70% |
Stephen Rothwell | 11 | 0.28% | 1 | 3.70% |
Gustavo A. R. Silva | 5 | 0.13% | 1 | 3.70% |
Joe Perches | 3 | 0.08% | 1 | 3.70% |
Kevin Hao | 3 | 0.08% | 1 | 3.70% |
Linus Torvalds (pre-git) | 2 | 0.05% | 1 | 3.70% |
Uwe Kleine-König | 2 | 0.05% | 1 | 3.70% |
Thomas Gleixner | 2 | 0.05% | 1 | 3.70% |
Yong Zhang | 1 | 0.03% | 1 | 3.70% |
Linus Torvalds | 1 | 0.03% | 1 | 3.70% |
Colin Ian King | 1 | 0.03% | 1 | 3.70% |
Fabian Frederick | 1 | 0.03% | 1 | 3.70% |
Total | 3868 | 27 |
// SPDX-License-Identifier: GPL-2.0-only /* * PS3 device registration routines. * * Copyright (C) 2007 Sony Computer Entertainment Inc. * Copyright 2007 Sony Corp. */ #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 <linux/rcuwait.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; } /** * 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 __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; } 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__); 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; } 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(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 { struct ps3_notification_device dev; u8 buf[512]; } *local; struct ps3_notify_cmd *notify_cmd; struct ps3_notify_event *notify_event; int res; unsigned int irq; u64 lpar; pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__); local = kzalloc(sizeof(*local), GFP_KERNEL); if (!local) return -ENOMEM; lpar = ps3_mm_phys_to_lpar(__pa(&local->buf)); notify_cmd = (struct ps3_notify_cmd *)&local->buf; notify_event = (struct ps3_notify_event *)&local->buf; /* dummy system bus device */ local->dev.sbd.bus_id = (u64)data; local->dev.sbd.dev_id = PS3_NOTIFICATION_DEV_ID; local->dev.sbd.interrupt_id = PS3_NOTIFICATION_INTERRUPT_ID; res = lv1_open_device(local->dev.sbd.bus_id, local->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(&local->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(&local->dev.lock); rcuwait_init(&local->dev.wait); res = request_irq(irq, ps3_notification_interrupt, 0, "ps3_notification", &local->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(&local->dev, lpar, 1); if (res) goto fail_free_irq; set_freezable(); /* Loop here processing the requested notification events. */ do { try_to_freeze(); memset(notify_event, 0, sizeof(*notify_event)); res = ps3_notification_read_write(&local->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 != local->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(local->dev.sbd.bus_id, notify_event->dev_id); } while (!kthread_should_stop()); fail_free_irq: free_irq(irq, &local->dev); fail_sb_event_receive_port_destroy: ps3_sb_event_receive_port_destroy(&local->dev.sbd, irq); fail_close_device: lv1_close_device(local->dev.sbd.bus_id, local->dev.sbd.dev_id); fail_free: kfree(local); 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);
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