^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) * Debugfs interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2020, Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Authors: Gil Fine <gil.fine@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Mika Westerberg <mika.westerberg@linux.intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^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/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "tb.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define PORT_CAP_PCIE_LEN 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define PORT_CAP_POWER_LEN 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define PORT_CAP_LANE_LEN 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define PORT_CAP_USB3_LEN 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define PORT_CAP_DP_LEN 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define PORT_CAP_TMU_LEN 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define PORT_CAP_BASIC_LEN 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define PORT_CAP_USB4_LEN 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define SWITCH_CAP_TMU_LEN 26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define SWITCH_CAP_BASIC_LEN 27
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define PATH_LEN 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define COUNTER_SET_LEN 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define DEBUGFS_ATTR(__space, __write) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static int __space ## _open(struct inode *inode, struct file *file) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return single_open(file, __space ## _show, inode->i_private); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static const struct file_operations __space ## _fops = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) .owner = THIS_MODULE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .open = __space ## _open, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .release = single_release, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .read = seq_read, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) .write = __write, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) .llseek = seq_lseek, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define DEBUGFS_ATTR_RO(__space) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) DEBUGFS_ATTR(__space, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define DEBUGFS_ATTR_RW(__space) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) DEBUGFS_ATTR(__space, __space ## _write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static struct dentry *tb_debugfs_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static void *validate_and_copy_from_user(const void __user *user_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) size_t *count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) size_t nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) void *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (!*count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (!access_ok(user_buf, *count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return ERR_PTR(-EFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) buf = (void *)get_zeroed_page(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) nbytes = min_t(size_t, *count, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (copy_from_user(buf, user_buf, nbytes)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) free_page((unsigned long)buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return ERR_PTR(-EFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) *count = nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static bool parse_line(char **line, u32 *offs, u32 *val, int short_fmt_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int long_fmt_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) char *token;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) u32 v[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) token = strsep(line, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!token)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * For Adapter/Router configuration space:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * Short format is: offset value\n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * v[0] v[1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * Long format as produced from the read side:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * offset relative_offset cap_id vs_cap_id value\n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * v[0] v[1] v[2] v[3] v[4]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * For Counter configuration space:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * Short format is: offset\n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * v[0]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * Long format as produced from the read side:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * offset relative_offset counter_id value\n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * v[0] v[1] v[2] v[3]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ret = sscanf(token, "%i %i %i %i %i", &v[0], &v[1], &v[2], &v[3], &v[4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /* In case of Counters, clear counter, "val" content is NA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (ret == short_fmt_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) *offs = v[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) *val = v[short_fmt_len - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) } else if (ret == long_fmt_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) *offs = v[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) *val = v[long_fmt_len - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #if IS_ENABLED(CONFIG_USB4_DEBUGFS_WRITE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static ssize_t regs_write(struct tb_switch *sw, struct tb_port *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) const char __user *user_buf, size_t count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct tb *tb = sw->tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) char *line, *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) u32 val, offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) buf = validate_and_copy_from_user(user_buf, &count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (IS_ERR(buf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return PTR_ERR(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) pm_runtime_get_sync(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (mutex_lock_interruptible(&tb->lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ret = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) goto out;
^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) /* User did hardware changes behind the driver's back */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) add_taint(TAINT_USER, LOCKDEP_STILL_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) line = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) while (parse_line(&line, &offset, &val, 2, 5)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) ret = tb_port_write(port, &val, TB_CFG_PORT, offset, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) ret = tb_sw_write(sw, &val, TB_CFG_SWITCH, offset, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) break;
^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) mutex_unlock(&tb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) pm_runtime_mark_last_busy(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) pm_runtime_put_autosuspend(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) free_page((unsigned long)buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return ret < 0 ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static ssize_t port_regs_write(struct file *file, const char __user *user_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct seq_file *s = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct tb_port *port = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return regs_write(port->sw, port, user_buf, count, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static ssize_t switch_regs_write(struct file *file, const char __user *user_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct seq_file *s = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct tb_switch *sw = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return regs_write(sw, NULL, user_buf, count, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #define DEBUGFS_MODE 0600
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #define port_regs_write NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #define switch_regs_write NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) #define DEBUGFS_MODE 0400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static int port_clear_all_counters(struct tb_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) u32 *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) buf = kcalloc(COUNTER_SET_LEN * port->config.max_counters, sizeof(u32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) ret = tb_port_write(port, buf, TB_CFG_COUNTERS, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) COUNTER_SET_LEN * port->config.max_counters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static ssize_t counters_write(struct file *file, const char __user *user_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct seq_file *s = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct tb_port *port = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct tb_switch *sw = port->sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct tb *tb = port->sw->tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) buf = validate_and_copy_from_user(user_buf, &count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (IS_ERR(buf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return PTR_ERR(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) pm_runtime_get_sync(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (mutex_lock_interruptible(&tb->lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /* If written delimiter only, clear all counters in one shot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (buf[0] == '\n') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) ret = port_clear_all_counters(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) char *line = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) u32 val, offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) while (parse_line(&line, &offset, &val, 1, 4)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) ret = tb_port_write(port, &val, TB_CFG_COUNTERS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) offset, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) mutex_unlock(&tb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) pm_runtime_mark_last_busy(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) pm_runtime_put_autosuspend(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) free_page((unsigned long)buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return ret < 0 ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static void cap_show(struct seq_file *s, struct tb_switch *sw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct tb_port *port, unsigned int cap, u8 cap_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) u8 vsec_id, int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int ret, offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) while (length > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int i, dwords = min(length, TB_MAX_CONFIG_RW_LENGTH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) u32 data[TB_MAX_CONFIG_RW_LENGTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) ret = tb_port_read(port, data, TB_CFG_PORT, cap + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) dwords);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) ret = tb_sw_read(sw, data, TB_CFG_SWITCH, cap + offset, dwords);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) seq_printf(s, "0x%04x <not accessible>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) cap + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (dwords > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) seq_printf(s, "0x%04x ...\n", cap + offset + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) for (i = 0; i < dwords; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) seq_printf(s, "0x%04x %4d 0x%02x 0x%02x 0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) cap + offset + i, offset + i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) cap_id, vsec_id, data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) length -= dwords;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) offset += dwords;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static void port_cap_show(struct tb_port *port, struct seq_file *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) unsigned int cap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct tb_cap_any header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) u8 vsec_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) size_t length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) ret = tb_port_read(port, &header, TB_CFG_PORT, cap, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) seq_printf(s, "0x%04x <capability read failed>\n", cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) switch (header.basic.cap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) case TB_PORT_CAP_PHY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) length = PORT_CAP_LANE_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) case TB_PORT_CAP_TIME1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) length = PORT_CAP_TMU_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) case TB_PORT_CAP_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) length = PORT_CAP_POWER_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) case TB_PORT_CAP_ADAP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (tb_port_is_pcie_down(port) || tb_port_is_pcie_up(port)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) length = PORT_CAP_PCIE_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) } else if (tb_port_is_dpin(port) || tb_port_is_dpout(port)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) length = PORT_CAP_DP_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) } else if (tb_port_is_usb3_down(port) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) tb_port_is_usb3_up(port)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) length = PORT_CAP_USB3_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) seq_printf(s, "0x%04x <unsupported capability 0x%02x>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) cap, header.basic.cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) case TB_PORT_CAP_VSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (!header.extended_short.length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) ret = tb_port_read(port, (u32 *)&header + 1, TB_CFG_PORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) cap + 1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) seq_printf(s, "0x%04x <capability read failed>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) cap + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) length = header.extended_long.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) vsec_id = header.extended_short.vsec_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) length = header.extended_short.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) vsec_id = header.extended_short.vsec_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * Ice Lake and Tiger Lake do not implement the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) * full length of the capability, only first 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) * dwords so hard-code it here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if (!vsec_id &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) (tb_switch_is_ice_lake(port->sw) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) tb_switch_is_tiger_lake(port->sw)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) length = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) case TB_PORT_CAP_USB4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) length = PORT_CAP_USB4_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) seq_printf(s, "0x%04x <unsupported capability 0x%02x>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) cap, header.basic.cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) cap_show(s, NULL, port, cap, header.basic.cap, vsec_id, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static void port_caps_show(struct tb_port *port, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) int cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) cap = tb_port_next_cap(port, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) while (cap > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) port_cap_show(port, s, cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) cap = tb_port_next_cap(port, cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static int port_basic_regs_show(struct tb_port *port, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) u32 data[PORT_CAP_BASIC_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) ret = tb_port_read(port, data, TB_CFG_PORT, 0, ARRAY_SIZE(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) for (i = 0; i < ARRAY_SIZE(data); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) seq_printf(s, "0x%04x %4d 0x00 0x00 0x%08x\n", i, i, data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) static int port_regs_show(struct seq_file *s, void *not_used)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct tb_port *port = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct tb_switch *sw = port->sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct tb *tb = sw->tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) pm_runtime_get_sync(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if (mutex_lock_interruptible(&tb->lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) ret = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) goto out_rpm_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) seq_puts(s, "# offset relative_offset cap_id vs_cap_id value\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) ret = port_basic_regs_show(port, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) port_caps_show(port, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) mutex_unlock(&tb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) out_rpm_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) pm_runtime_mark_last_busy(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) pm_runtime_put_autosuspend(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) DEBUGFS_ATTR_RW(port_regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) static void switch_cap_show(struct tb_switch *sw, struct seq_file *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) unsigned int cap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct tb_cap_any header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) int ret, length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) u8 vsec_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) ret = tb_sw_read(sw, &header, TB_CFG_SWITCH, cap, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) seq_printf(s, "0x%04x <capability read failed>\n", cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (header.basic.cap == TB_SWITCH_CAP_VSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (!header.extended_short.length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ret = tb_sw_read(sw, (u32 *)&header + 1, TB_CFG_SWITCH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) cap + 1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) seq_printf(s, "0x%04x <capability read failed>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) cap + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) length = header.extended_long.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) length = header.extended_short.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) vsec_id = header.extended_short.vsec_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (header.basic.cap == TB_SWITCH_CAP_TMU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) length = SWITCH_CAP_TMU_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) seq_printf(s, "0x%04x <unknown capability 0x%02x>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) cap, header.basic.cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) cap_show(s, sw, NULL, cap, header.basic.cap, vsec_id, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) static void switch_caps_show(struct tb_switch *sw, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) int cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) cap = tb_switch_next_cap(sw, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) while (cap > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) switch_cap_show(sw, s, cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) cap = tb_switch_next_cap(sw, cap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) static int switch_basic_regs_show(struct tb_switch *sw, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) u32 data[SWITCH_CAP_BASIC_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) size_t dwords;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /* Only USB4 has the additional registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (tb_switch_is_usb4(sw))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) dwords = ARRAY_SIZE(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) dwords = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) ret = tb_sw_read(sw, data, TB_CFG_SWITCH, 0, dwords);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) for (i = 0; i < dwords; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) seq_printf(s, "0x%04x %4d 0x00 0x00 0x%08x\n", i, i, data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) static int switch_regs_show(struct seq_file *s, void *not_used)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct tb_switch *sw = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct tb *tb = sw->tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) pm_runtime_get_sync(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (mutex_lock_interruptible(&tb->lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) ret = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) goto out_rpm_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) seq_puts(s, "# offset relative_offset cap_id vs_cap_id value\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) ret = switch_basic_regs_show(sw, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) switch_caps_show(sw, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) mutex_unlock(&tb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) out_rpm_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) pm_runtime_mark_last_busy(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) pm_runtime_put_autosuspend(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) DEBUGFS_ATTR_RW(switch_regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) static int path_show_one(struct tb_port *port, struct seq_file *s, int hopid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) u32 data[PATH_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) ret = tb_port_read(port, data, TB_CFG_HOPS, hopid * PATH_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) ARRAY_SIZE(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) seq_printf(s, "0x%04x <not accessible>\n", hopid * PATH_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) for (i = 0; i < ARRAY_SIZE(data); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) seq_printf(s, "0x%04x %4d 0x%02x 0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) hopid * PATH_LEN + i, i, hopid, data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) static int path_show(struct seq_file *s, void *not_used)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct tb_port *port = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) struct tb_switch *sw = port->sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) struct tb *tb = sw->tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) int start, i, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) pm_runtime_get_sync(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (mutex_lock_interruptible(&tb->lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) ret = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) goto out_rpm_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) seq_puts(s, "# offset relative_offset in_hop_id value\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) /* NHI and lane adapters have entry for path 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (tb_port_is_null(port) || tb_port_is_nhi(port)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) ret = path_show_one(port, s, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) start = tb_port_is_nhi(port) ? 1 : TB_PATH_MIN_HOPID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) for (i = start; i <= port->config.max_in_hop_id; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) ret = path_show_one(port, s, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) mutex_unlock(&tb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) out_rpm_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) pm_runtime_mark_last_busy(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) pm_runtime_put_autosuspend(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) DEBUGFS_ATTR_RO(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) static int counter_set_regs_show(struct tb_port *port, struct seq_file *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) int counter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) u32 data[COUNTER_SET_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) ret = tb_port_read(port, data, TB_CFG_COUNTERS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) counter * COUNTER_SET_LEN, ARRAY_SIZE(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) seq_printf(s, "0x%04x <not accessible>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) counter * COUNTER_SET_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) for (i = 0; i < ARRAY_SIZE(data); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) seq_printf(s, "0x%04x %4d 0x%02x 0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) counter * COUNTER_SET_LEN + i, i, counter, data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) static int counters_show(struct seq_file *s, void *not_used)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) struct tb_port *port = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) struct tb_switch *sw = port->sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) struct tb *tb = sw->tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) int i, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) pm_runtime_get_sync(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (mutex_lock_interruptible(&tb->lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) ret = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) seq_puts(s, "# offset relative_offset counter_id value\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) for (i = 0; i < port->config.max_counters; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) ret = counter_set_regs_show(port, s, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) mutex_unlock(&tb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) pm_runtime_mark_last_busy(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) pm_runtime_put_autosuspend(&sw->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) DEBUGFS_ATTR_RW(counters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) * tb_switch_debugfs_init() - Add debugfs entries for router
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) * @sw: Pointer to the router
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * Adds debugfs directories and files for given router.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) void tb_switch_debugfs_init(struct tb_switch *sw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) struct dentry *debugfs_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) struct tb_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) debugfs_dir = debugfs_create_dir(dev_name(&sw->dev), tb_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) sw->debugfs_dir = debugfs_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) debugfs_create_file("regs", DEBUGFS_MODE, debugfs_dir, sw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) &switch_regs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) tb_switch_for_each_port(sw, port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) struct dentry *debugfs_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) char dir_name[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (port->disabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (port->config.type == TB_TYPE_INACTIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) snprintf(dir_name, sizeof(dir_name), "port%d", port->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) debugfs_dir = debugfs_create_dir(dir_name, sw->debugfs_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) debugfs_create_file("regs", DEBUGFS_MODE, debugfs_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) port, &port_regs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) debugfs_create_file("path", 0400, debugfs_dir, port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) &path_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) if (port->config.counters_support)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) debugfs_create_file("counters", 0600, debugfs_dir, port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) &counters_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) * tb_switch_debugfs_remove() - Remove all router debugfs entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * @sw: Pointer to the router
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * Removes all previously added debugfs entries under this router.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) void tb_switch_debugfs_remove(struct tb_switch *sw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) debugfs_remove_recursive(sw->debugfs_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) void tb_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) tb_debugfs_root = debugfs_create_dir("thunderbolt", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) void tb_debugfs_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) debugfs_remove_recursive(tb_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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