--- zzzz-none-000/linux-3.10.107/drivers/misc/mei/debugfs.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/misc/mei/debugfs.c 2021-02-04 17:41:59.000000000 +0000 @@ -17,50 +17,108 @@ #include #include #include -#include #include #include "mei_dev.h" +#include "client.h" #include "hw.h" static ssize_t mei_dbgfs_read_meclients(struct file *fp, char __user *ubuf, size_t cnt, loff_t *ppos) { struct mei_device *dev = fp->private_data; - struct mei_me_client *cl; + struct mei_me_client *me_cl; + size_t bufsz = 1; + char *buf; + int i = 0; + int pos = 0; + int ret; + +#define HDR \ +" |id|fix| UUID |con|msg len|sb|refc|\n" + + down_read(&dev->me_clients_rwsem); + list_for_each_entry(me_cl, &dev->me_clients, list) + bufsz++; + + bufsz *= sizeof(HDR) + 1; + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) { + up_read(&dev->me_clients_rwsem); + return -ENOMEM; + } + + pos += scnprintf(buf + pos, bufsz - pos, HDR); + + /* if the driver is not enabled the list won't be consistent */ + if (dev->dev_state != MEI_DEV_ENABLED) + goto out; + + list_for_each_entry(me_cl, &dev->me_clients, list) { + + if (mei_me_cl_get(me_cl)) { + pos += scnprintf(buf + pos, bufsz - pos, + "%2d|%2d|%3d|%pUl|%3d|%7d|%2d|%4d|\n", + i++, me_cl->client_id, + me_cl->props.fixed_address, + &me_cl->props.protocol_name, + me_cl->props.max_number_of_connections, + me_cl->props.max_msg_length, + me_cl->props.single_recv_buf, + atomic_read(&me_cl->refcnt.refcount)); + + mei_me_cl_put(me_cl); + } + } + +out: + up_read(&dev->me_clients_rwsem); + ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, pos); + kfree(buf); + return ret; +} + +static const struct file_operations mei_dbgfs_fops_meclients = { + .open = simple_open, + .read = mei_dbgfs_read_meclients, + .llseek = generic_file_llseek, +}; + +static ssize_t mei_dbgfs_read_active(struct file *fp, char __user *ubuf, + size_t cnt, loff_t *ppos) +{ + struct mei_device *dev = fp->private_data; + struct mei_cl *cl; const size_t bufsz = 1024; - char *buf = kzalloc(bufsz, GFP_KERNEL); - int i; + char *buf; + int i = 0; int pos = 0; int ret; + if (!dev) + return -ENODEV; + + buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; pos += scnprintf(buf + pos, bufsz - pos, - " |id|addr| UUID |con|msg len|\n"); + " |me|host|state|rd|wr|\n"); mutex_lock(&dev->device_lock); - /* if the driver is not enabled the list won't b consitent */ + /* if the driver is not enabled the list won't be consistent */ if (dev->dev_state != MEI_DEV_ENABLED) goto out; - for (i = 0; i < dev->me_clients_num; i++) { - cl = &dev->me_clients[i]; - - /* skip me clients that cannot be connected */ - if (cl->props.max_number_of_connections == 0) - continue; + list_for_each_entry(cl, &dev->file_list, link) { pos += scnprintf(buf + pos, bufsz - pos, - "%2d|%2d|%4d|%pUl|%3d|%7d|\n", - i, cl->client_id, - cl->props.fixed_address, - &cl->props.protocol_name, - cl->props.max_number_of_connections, - cl->props.max_msg_length); + "%2d|%2d|%4d|%5d|%2d|%2d|\n", + i, mei_cl_me_id(cl), cl->host_client_id, cl->state, + !list_empty(&cl->rd_completed), cl->writing_state); + i++; } out: mutex_unlock(&dev->device_lock); @@ -69,9 +127,9 @@ return ret; } -static const struct file_operations mei_dbgfs_fops_meclients = { +static const struct file_operations mei_dbgfs_fops_active = { .open = simple_open, - .read = mei_dbgfs_read_meclients, + .read = mei_dbgfs_read_active, .llseek = generic_file_llseek, }; @@ -87,8 +145,26 @@ if (!buf) return -ENOMEM; - pos += scnprintf(buf + pos, bufsz - pos, "%s\n", + pos += scnprintf(buf + pos, bufsz - pos, "dev: %s\n", mei_dev_state_str(dev->dev_state)); + pos += scnprintf(buf + pos, bufsz - pos, "hbm: %s\n", + mei_hbm_state_str(dev->hbm_state)); + + if (dev->hbm_state == MEI_HBM_STARTED) { + pos += scnprintf(buf + pos, bufsz - pos, "hbm features:\n"); + pos += scnprintf(buf + pos, bufsz - pos, "\tPG: %01d\n", + dev->hbm_f_pg_supported); + pos += scnprintf(buf + pos, bufsz - pos, "\tDC: %01d\n", + dev->hbm_f_dc_supported); + pos += scnprintf(buf + pos, bufsz - pos, "\tDOT: %01d\n", + dev->hbm_f_dot_supported); + pos += scnprintf(buf + pos, bufsz - pos, "\tEV: %01d\n", + dev->hbm_f_ev_supported); + } + + pos += scnprintf(buf + pos, bufsz - pos, "pg: %s, %s\n", + mei_pg_is_enabled(dev) ? "ENABLED" : "DISABLED", + mei_pg_state_str(mei_pg_state(dev))); ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, pos); kfree(buf); return ret; @@ -101,7 +177,8 @@ /** * mei_dbgfs_deregister - Remove the debugfs files and directories - * @mei - pointer to mei device private dat + * + * @dev: the mei device structure */ void mei_dbgfs_deregister(struct mei_device *dev) { @@ -112,29 +189,47 @@ } /** - * Add the debugfs files + * mei_dbgfs_register - Add the debugfs files + * + * @dev: the mei device structure + * @name: the mei device name * + * Return: 0 on success, <0 on failure. */ int mei_dbgfs_register(struct mei_device *dev, const char *name) { struct dentry *dir, *f; + dir = debugfs_create_dir(name, NULL); if (!dir) return -ENOMEM; + dev->dbgfs_dir = dir; + f = debugfs_create_file("meclients", S_IRUSR, dir, dev, &mei_dbgfs_fops_meclients); if (!f) { - dev_err(&dev->pdev->dev, "meclients: registration failed\n"); + dev_err(dev->dev, "meclients: registration failed\n"); + goto err; + } + f = debugfs_create_file("active", S_IRUSR, dir, + dev, &mei_dbgfs_fops_active); + if (!f) { + dev_err(dev->dev, "active: registration failed\n"); goto err; } f = debugfs_create_file("devstate", S_IRUSR, dir, dev, &mei_dbgfs_fops_devstate); if (!f) { - dev_err(&dev->pdev->dev, "devstate: registration failed\n"); + dev_err(dev->dev, "devstate: registration failed\n"); + goto err; + } + f = debugfs_create_bool("allow_fixed_address", S_IRUSR | S_IWUSR, dir, + &dev->allow_fixed_address); + if (!f) { + dev_err(dev->dev, "allow_fixed_address: registration failed\n"); goto err; } - dev->dbgfs_dir = dir; return 0; err: mei_dbgfs_deregister(dev);