^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2012-2016, Intel Corporation. All rights reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Intel Management Engine Interface (Intel MEI) Linux driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mei.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "mei_dev.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "client.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "hw.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static int mei_dbgfs_meclients_show(struct seq_file *m, void *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct mei_device *dev = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct mei_me_client *me_cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) down_read(&dev->me_clients_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) seq_puts(m, " |id|fix| UUID |con|msg len|sb|refc|vt|\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* if the driver is not enabled the list won't be consistent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) if (dev->dev_state != MEI_DEV_ENABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) list_for_each_entry(me_cl, &dev->me_clients, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (!mei_me_cl_get(me_cl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) seq_printf(m, "%2d|%2d|%3d|%pUl|%3d|%7d|%2d|%4d|%2d|\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) i++, me_cl->client_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) me_cl->props.fixed_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) &me_cl->props.protocol_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) me_cl->props.max_number_of_connections,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) me_cl->props.max_msg_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) me_cl->props.single_recv_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) kref_read(&me_cl->refcnt),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) me_cl->props.vt_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) mei_me_cl_put(me_cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) up_read(&dev->me_clients_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_meclients);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static int mei_dbgfs_active_show(struct seq_file *m, void *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct mei_device *dev = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct mei_cl *cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) mutex_lock(&dev->device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) seq_puts(m, " |me|host|state|rd|wr|wrq\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* if the driver is not enabled the list won't be consistent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (dev->dev_state != MEI_DEV_ENABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) list_for_each_entry(cl, &dev->file_list, link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) seq_printf(m, "%3d|%2d|%4d|%5d|%2d|%2d|%3u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) i, mei_cl_me_id(cl), cl->host_client_id, cl->state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) !list_empty(&cl->rd_completed), cl->writing_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) cl->tx_cb_queued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) mutex_unlock(&dev->device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int mei_dbgfs_devstate_show(struct seq_file *m, void *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct mei_device *dev = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) seq_printf(m, "dev: %s\n", mei_dev_state_str(dev->dev_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) seq_printf(m, "hbm: %s\n", mei_hbm_state_str(dev->hbm_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (dev->hbm_state >= MEI_HBM_ENUM_CLIENTS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) dev->hbm_state <= MEI_HBM_STARTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) seq_puts(m, "hbm features:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) seq_printf(m, "\tPG: %01d\n", dev->hbm_f_pg_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) seq_printf(m, "\tDC: %01d\n", dev->hbm_f_dc_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) seq_printf(m, "\tIE: %01d\n", dev->hbm_f_ie_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) seq_printf(m, "\tDOT: %01d\n", dev->hbm_f_dot_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) seq_printf(m, "\tEV: %01d\n", dev->hbm_f_ev_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) seq_printf(m, "\tFA: %01d\n", dev->hbm_f_fa_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) seq_printf(m, "\tOS: %01d\n", dev->hbm_f_os_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) seq_printf(m, "\tDR: %01d\n", dev->hbm_f_dr_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) seq_printf(m, "\tVT: %01d\n", dev->hbm_f_vt_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) seq_printf(m, "\tCAP: %01d\n", dev->hbm_f_cap_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) seq_printf(m, "pg: %s, %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) mei_pg_is_enabled(dev) ? "ENABLED" : "DISABLED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) mei_pg_state_str(mei_pg_state(dev)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_devstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static ssize_t mei_dbgfs_write_allow_fa(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) const char __user *user_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct mei_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) dev = container_of(file->private_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct mei_device, allow_fixed_address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ret = debugfs_write_file_bool(file, user_buf, count, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) dev->override_fixed_address = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static const struct file_operations mei_dbgfs_allow_fa_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .open = simple_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .read = debugfs_read_file_bool,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .write = mei_dbgfs_write_allow_fa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .llseek = generic_file_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * mei_dbgfs_deregister - Remove the debugfs files and directories
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * @dev: the mei device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) void mei_dbgfs_deregister(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (!dev->dbgfs_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) debugfs_remove_recursive(dev->dbgfs_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) dev->dbgfs_dir = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * mei_dbgfs_register - Add the debugfs files
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * @dev: the mei device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * @name: the mei device name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) void mei_dbgfs_register(struct mei_device *dev, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct dentry *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) dir = debugfs_create_dir(name, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) dev->dbgfs_dir = dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) debugfs_create_file("meclients", S_IRUSR, dir, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) &mei_dbgfs_meclients_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) debugfs_create_file("active", S_IRUSR, dir, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) &mei_dbgfs_active_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) debugfs_create_file("devstate", S_IRUSR, dir, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) &mei_dbgfs_devstate_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) &dev->allow_fixed_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) &mei_dbgfs_allow_fa_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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