diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/ps3.h | 7 | ||||
| -rw-r--r-- | arch/powerpc/platforms/ps3/os-area.c | 138 |
2 files changed, 82 insertions, 63 deletions
diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h index 7660694ab3ca..7f065e178ec4 100644 --- a/arch/powerpc/include/asm/ps3.h +++ b/arch/powerpc/include/asm/ps3.h @@ -53,6 +53,13 @@ enum ps3_param_av_multi_out ps3_os_area_get_av_multi_out(void); extern u64 ps3_os_area_get_rtc_diff(void); extern void ps3_os_area_set_rtc_diff(u64 rtc_diff); +struct ps3_os_area_flash_ops { + ssize_t (*read)(void *buf, size_t count, loff_t pos); + ssize_t (*write)(const void *buf, size_t count, loff_t pos); +}; + +extern void ps3_os_area_flash_register(const struct ps3_os_area_flash_ops *ops); + /* dma routines */ enum ps3_dma_page_size { diff --git a/arch/powerpc/platforms/ps3/os-area.c b/arch/powerpc/platforms/ps3/os-area.c index 6e4125d6150f..d6487a9c8019 100644 --- a/arch/powerpc/platforms/ps3/os-area.c +++ b/arch/powerpc/platforms/ps3/os-area.c @@ -226,6 +226,44 @@ static struct property property_av_multi_out = { .value = &saved_params.av_multi_out, }; + +static DEFINE_MUTEX(os_area_flash_mutex); + +static const struct ps3_os_area_flash_ops *os_area_flash_ops; + +void ps3_os_area_flash_register(const struct ps3_os_area_flash_ops *ops) +{ + mutex_lock(&os_area_flash_mutex); + os_area_flash_ops = ops; + mutex_unlock(&os_area_flash_mutex); +} +EXPORT_SYMBOL_GPL(ps3_os_area_flash_register); + +static ssize_t os_area_flash_read(void *buf, size_t count, loff_t pos) +{ + ssize_t res = -ENODEV; + + mutex_lock(&os_area_flash_mutex); + if (os_area_flash_ops) + res = os_area_flash_ops->read(buf, count, pos); + mutex_unlock(&os_area_flash_mutex); + + return res; +} + +static ssize_t os_area_flash_write(const void *buf, size_t count, loff_t pos) +{ + ssize_t res = -ENODEV; + + mutex_lock(&os_area_flash_mutex); + if (os_area_flash_ops) + res = os_area_flash_ops->write(buf, count, pos); + mutex_unlock(&os_area_flash_mutex); + + return res; +} + + /** * os_area_set_property - Add or overwrite a saved_params value to the device tree. * @@ -352,12 +390,12 @@ static int db_verify(const struct os_area_db *db) if (memcmp(db->magic_num, OS_AREA_DB_MAGIC_NUM, sizeof(db->magic_num))) { pr_debug("%s:%d magic_num failed\n", __func__, __LINE__); - return -1; + return -EINVAL; } if (db->version != 1) { pr_debug("%s:%d version failed\n", __func__, __LINE__); - return -1; + return -EINVAL; } return 0; @@ -578,59 +616,48 @@ static void os_area_db_init(struct os_area_db *db) * */ -static void __maybe_unused update_flash_db(void) +static int update_flash_db(void) { - int result; - int file; - off_t offset; + const unsigned int buf_len = 8 * OS_AREA_SEGMENT_SIZE; + struct os_area_header *header; ssize_t count; - static const unsigned int buf_len = 8 * OS_AREA_SEGMENT_SIZE; - const struct os_area_header *header; + int error; + loff_t pos; struct os_area_db* db; /* Read in header and db from flash. */ - file = sys_open("/dev/ps3flash", O_RDWR, 0); - - if (file < 0) { - pr_debug("%s:%d sys_open failed\n", __func__, __LINE__); - goto fail_open; - } - header = kmalloc(buf_len, GFP_KERNEL); - if (!header) { - pr_debug("%s:%d kmalloc failed\n", __func__, __LINE__); - goto fail_malloc; + pr_debug("%s: kmalloc failed\n", __func__); + return -ENOMEM; } - offset = sys_lseek(file, 0, SEEK_SET); - - if (offset != 0) { - pr_debug("%s:%d sys_lseek failed\n", __func__, __LINE__); - goto fail_header_seek; + count = os_area_flash_read(header, buf_len, 0); + if (count < 0) { + pr_debug("%s: os_area_flash_read failed %zd\n", __func__, + count); + error = count; + goto fail; } - count = sys_read(file, (char __user *)header, buf_len); - - result = count < OS_AREA_SEGMENT_SIZE || verify_header(header) - || count < header->db_area_offset * OS_AREA_SEGMENT_SIZE; - - if (result) { - pr_debug("%s:%d verify_header failed\n", __func__, __LINE__); + pos = header->db_area_offset * OS_AREA_SEGMENT_SIZE; + if (count < OS_AREA_SEGMENT_SIZE || verify_header(header) || + count < pos) { + pr_debug("%s: verify_header failed\n", __func__); dump_header(header); - goto fail_header; + error = -EINVAL; + goto fail; } /* Now got a good db offset and some maybe good db data. */ - db = (void*)header + header->db_area_offset * OS_AREA_SEGMENT_SIZE; + db = (void *)header + pos; - result = db_verify(db); - - if (result) { - printk(KERN_NOTICE "%s:%d: Verify of flash database failed, " - "formatting.\n", __func__, __LINE__); + error = db_verify(db); + if (error) { + pr_notice("%s: Verify of flash database failed, formatting.\n", + __func__); dump_db(db); os_area_db_init(db); } @@ -639,29 +666,16 @@ static void __maybe_unused update_flash_db(void) db_set_64(db, &os_area_db_id_rtc_diff, saved_params.rtc_diff); - offset = sys_lseek(file, header->db_area_offset * OS_AREA_SEGMENT_SIZE, - SEEK_SET); - - if (offset != header->db_area_offset * OS_AREA_SEGMENT_SIZE) { - pr_debug("%s:%d sys_lseek failed\n", __func__, __LINE__); - goto fail_db_seek; - } - - count = sys_write(file, (const char __user *)db, - sizeof(struct os_area_db)); - + count = os_area_flash_write(db, sizeof(struct os_area_db), pos); if (count < sizeof(struct os_area_db)) { - pr_debug("%s:%d sys_write failed\n", __func__, __LINE__); + pr_debug("%s: os_area_flash_write failed %zd\n", __func__, + count); + error = count < 0 ? count : -EIO; } -fail_db_seek: -fail_header: -fail_header_seek: +fail: kfree(header); -fail_malloc: - sys_close(file); -fail_open: - return; + return error; } /** @@ -674,11 +688,11 @@ fail_open: static void os_area_queue_work_handler(struct work_struct *work) { struct device_node *node; + int error; pr_debug(" -> %s:%d\n", __func__, __LINE__); node = of_find_node_by_path("/"); - if (node) { os_area_set_property(node, &property_rtc_diff); of_node_put(node); @@ -686,12 +700,10 @@ static void os_area_queue_work_handler(struct work_struct *work) pr_debug("%s:%d of_find_node_by_path failed\n", __func__, __LINE__); -#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) - update_flash_db(); -#else - printk(KERN_WARNING "%s:%d: No flash rom driver configured.\n", - __func__, __LINE__); -#endif + error = update_flash_db(); + if (error) + pr_warning("%s: Could not update FLASH ROM\n", __func__); + pr_debug(" <- %s:%d\n", __func__, __LINE__); } |
