diff options
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/thunderbolt/Makefile | 1 | ||||
| -rw-r--r-- | drivers/thunderbolt/debugfs.c | 700 | ||||
| -rw-r--r-- | drivers/thunderbolt/domain.c | 13 | ||||
| -rw-r--r-- | drivers/thunderbolt/switch.c | 3 | ||||
| -rw-r--r-- | drivers/thunderbolt/tb.h | 14 | ||||
| -rw-r--r-- | drivers/thunderbolt/tb_regs.h | 4 |
7 files changed, 742 insertions, 3 deletions
diff --git a/drivers/thunderbolt/Kconfig b/drivers/thunderbolt/Kconfig index 354e61c0f2e5..2257c22f8ab3 100644 --- a/drivers/thunderbolt/Kconfig +++ b/drivers/thunderbolt/Kconfig @@ -16,6 +16,16 @@ menuconfig USB4 To compile this driver a module, choose M here. The module will be called thunderbolt. +config USB4_DEBUGFS_WRITE + bool "Enable write by debugfs to configuration spaces (DANGEROUS)" + depends on USB4 + help + Enables writing to device configuration registers through + debugfs interface. + + Only enable this if you know what you are doing! Never enable + this for production systems or distro kernels. + config USB4_KUNIT_TEST bool "KUnit tests" depends on KUNIT=y diff --git a/drivers/thunderbolt/Makefile b/drivers/thunderbolt/Makefile index 754a529aa132..61d5dff445b6 100644 --- a/drivers/thunderbolt/Makefile +++ b/drivers/thunderbolt/Makefile @@ -5,5 +5,6 @@ thunderbolt-objs += domain.o dma_port.o icm.o property.o xdomain.o lc.o tmu.o us thunderbolt-objs += nvm.o retimer.o quirks.o thunderbolt-${CONFIG_ACPI} += acpi.o +thunderbolt-$(CONFIG_DEBUG_FS) += debugfs.o obj-${CONFIG_USB4_KUNIT_TEST} += test.o diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c new file mode 100644 index 000000000000..fdfe6e4afbfe --- /dev/null +++ b/drivers/thunderbolt/debugfs.c @@ -0,0 +1,700 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Debugfs interface + * + * Copyright (C) 2020, Intel Corporation + * Authors: Gil Fine <gil.fine@intel.com> + * Mika Westerberg <mika.westerberg@linux.intel.com> + */ + +#include <linux/debugfs.h> +#include <linux/pm_runtime.h> + +#include "tb.h" + +#define PORT_CAP_PCIE_LEN 1 +#define PORT_CAP_POWER_LEN 2 +#define PORT_CAP_LANE_LEN 3 +#define PORT_CAP_USB3_LEN 5 +#define PORT_CAP_DP_LEN 8 +#define PORT_CAP_TMU_LEN 8 +#define PORT_CAP_BASIC_LEN 9 +#define PORT_CAP_USB4_LEN 20 + +#define SWITCH_CAP_TMU_LEN 26 +#define SWITCH_CAP_BASIC_LEN 27 + +#define PATH_LEN 2 + +#define COUNTER_SET_LEN 3 + +#define DEBUGFS_ATTR(__space, __write) \ +static int __space ## _open(struct inode *inode, struct file *file) \ +{ \ + return single_open(file, __space ## _show, inode->i_private); \ +} \ + \ +static const struct file_operations __space ## _fops = { \ + .owner = THIS_MODULE, \ + .open = __space ## _open, \ + .release = single_release, \ + .read = seq_read, \ + .write = __write, \ + .llseek = seq_lseek, \ +} + +#define DEBUGFS_ATTR_RO(__space) \ + DEBUGFS_ATTR(__space, NULL) + +#define DEBUGFS_ATTR_RW(__space) \ + DEBUGFS_ATTR(__space, __space ## _write) + +static struct dentry *tb_debugfs_root; + +static void *validate_and_copy_from_user(const void __user *user_buf, + size_t *count) +{ + size_t nbytes; + void *buf; + + if (!*count) + return ERR_PTR(-EINVAL); + + if (!access_ok(user_buf, *count)) + return ERR_PTR(-EFAULT); + + buf = (void *)get_zeroed_page(GFP_KERNEL); + if (!buf) + return ERR_PTR(-ENOMEM); + + nbytes = min_t(size_t, *count, PAGE_SIZE); + if (copy_from_user(buf, user_buf, nbytes)) { + free_page((unsigned long)buf); + return ERR_PTR(-EFAULT); + } + + *count = nbytes; + return buf; +} + +static bool parse_line(char **line, u32 *offs, u32 *val, int short_fmt_len, + int long_fmt_len) +{ + char *token; + u32 v[5]; + int ret; + + token = strsep(line, "\n"); + if (!token) + return false; + + /* + * For Adapter/Router configuration space: + * Short format is: offset value\n + * v[0] v[1] + * Long format as produced from the read side: + * offset relative_offset cap_id vs_cap_id value\n + * v[0] v[1] v[2] v[3] v[4] + * + * For Counter configuration space: + * Short format is: offset\n + * v[0] + * Long format as produced from the read side: + * offset relative_offset counter_id value\n + * v[0] v[1] v[2] v[3] + */ + ret = sscanf(token, "%i %i %i %i %i", &v[0], &v[1], &v[2], &v[3], &v[4]); + /* In case of Counters, clear counter, "val" content is NA */ + if (ret == short_fmt_len) { + *offs = v[0]; + *val = v[short_fmt_len - 1]; + return true; + } else if (ret == long_fmt_len) { + *offs = v[0]; + *val = v[long_fmt_len - 1]; + return true; + } + + return false; +} + +#if IS_ENABLED(CONFIG_USB4_DEBUGFS_WRITE) +static ssize_t regs_write(struct tb_switch *sw, struct tb_port *port, + const char __user *user_buf, size_t count, + loff_t *ppos) +{ + struct tb *tb = sw->tb; + char *line, *buf; + u32 val, offset; + int ret = 0; + + buf = validate_and_copy_from_user(user_buf, &count); + if (IS_ERR(buf)) + return PTR_ERR(buf); + + pm_runtime_get_sync(&sw->dev); + + if (mutex_lock_interruptible(&tb->lock)) { + ret = -ERESTARTSYS; + goto out; + } + + /* User did hardware changes behind the driver's back */ + add_taint(TAINT_USER, LOCKDEP_STILL_OK); + + line = buf; + while (parse_line(&line, &offset, &val, 2, 5)) { + if (port) + ret = tb_port_write(port, &val, TB_CFG_PORT, offset, 1); + else + ret = tb_sw_write(sw, &val, TB_CFG_SWITCH, offset, 1); + if (ret) + break; + } + + mutex_unlock(&tb->lock); + +out: + pm_runtime_mark_last_busy(&sw->dev); + pm_runtime_put_autosuspend(&sw->dev); + free_page((unsigned long)buf); + + return ret < 0 ? ret : count; +} + +static ssize_t port_regs_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct tb_port *port = s->private; + + return regs_write(port->sw, port, user_buf, count, ppos); +} + +static ssize_t switch_regs_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct tb_switch *sw = s->private; + + return regs_write(sw, NULL, user_buf, count, ppos); +} +#define DEBUGFS_MODE 0600 +#else +#define port_regs_write NULL +#define switch_regs_write NULL +#define DEBUGFS_MODE 0400 +#endif + +static int port_clear_all_counters(struct tb_port *port) +{ + u32 *buf; + int ret; + + buf = kcalloc(COUNTER_SET_LEN * port->config.max_counters, sizeof(u32), + GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = tb_port_write(port, buf, TB_CFG_COUNTERS, 0, + COUNTER_SET_LEN * port->config.max_counters); + kfree(buf); + + return ret; +} + +static ssize_t counters_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct tb_port *port = s->private; + struct tb_switch *sw = port->sw; + struct tb *tb = port->sw->tb; + char *buf; + int ret; + + buf = validate_and_copy_from_user(user_buf, &count); + if (IS_ERR(buf)) + return PTR_ERR(buf); + + pm_runtime_get_sync(&sw->dev); + + if (mutex_lock_interruptible(&tb->lock)) { + ret = -ERESTARTSYS; + goto out; + } + + /* If written delimiter only, clear all counters in one shot */ + if (buf[0] == '\n') { + ret = port_clear_all_counters(port); + } else { + char *line = buf; + u32 val, offset; + + while (parse_line(&line, &offset, &val, 1, 4)) { + ret = tb_port_write(port, &val, TB_CFG_COUNTERS, + offset, 1); + if (ret) + break; + } + } + + mutex_unlock(&tb->lock); + +out: + pm_runtime_mark_last_busy(&sw->dev); + pm_runtime_put_autosuspend(&sw->dev); + free_page((unsigned long)buf); + + return ret < 0 ? ret : count; +} + +static void cap_show(struct seq_file *s, struct tb_switch *sw, + struct tb_port *port, unsigned int cap, u8 cap_id, + u8 vsec_id, int length) +{ + int ret, offset = 0; + + while (length > 0) { + int i, dwords = min(length, TB_MAX_CONFIG_RW_LENGTH); + u32 data[TB_MAX_CONFIG_RW_LENGTH]; + + if (port) + ret = tb_port_read(port, data, TB_CFG_PORT, cap + offset, + dwords); + else + ret = tb_sw_read(sw, data, TB_CFG_SWITCH, cap + offset, dwords); + if (ret) { + seq_printf(s, "0x%04x <not accessible>\n", + cap + offset); + if (dwords > 1) + seq_printf(s, "0x%04x ...\n", cap + offset + 1); + return; + } + + for (i = 0; i < dwords; i++) { + seq_printf(s, "0x%04x %4d 0x%02x 0x%02x 0x%08x\n", + cap + offset + i, offset + i, + cap_id, vsec_id, data[i]); + } + + length -= dwords; + offset += dwords; + } +} + +static void port_cap_show(struct tb_port *port, struct seq_file *s, + unsigned int cap) +{ + struct tb_cap_any header; + u8 vsec_id = 0; + size_t length; + int ret; + + ret = tb_port_read(port, &header, TB_CFG_PORT, cap, 1); + if (ret) { + seq_printf(s, "0x%04x <capability read failed>\n", cap); + return; + } + + switch (header.basic.cap) { + case TB_PORT_CAP_PHY: + length = PORT_CAP_LANE_LEN; + break; + + case TB_PORT_CAP_TIME1: + length = PORT_CAP_TMU_LEN; + break; + + case TB_PORT_CAP_POWER: + length = PORT_CAP_POWER_LEN; + break; + + case TB_PORT_CAP_ADAP: + if (tb_port_is_pcie_down(port) || tb_port_is_pcie_up(port)) { + length = PORT_CAP_PCIE_LEN; + } else if (tb_port_is_dpin(port) || tb_port_is_dpout(port)) { + length = PORT_CAP_DP_LEN; + } else if (tb_port_is_usb3_down(port) || + tb_port_is_usb3_up(port)) { + length = PORT_CAP_USB3_LEN; + } else { + seq_printf(s, "0x%04x <unsupported capability 0x%02x>\n", + cap, header.basic.cap); + return; + } + break; + + case TB_PORT_CAP_VSE: + if (!header.extended_short.length) { + ret = tb_port_read(port, (u32 *)&header + 1, TB_CFG_PORT, + cap + 1, 1); + if (ret) { + seq_printf(s, "0x%04x <capability read failed>\n", + cap + 1); + return; + } + length = header.extended_long.length; + vsec_id = header.extended_short.vsec_id; + } else { + length = header.extended_short.length; + vsec_id = header.extended_short.vsec_id; + /* + * Ice Lake and Tiger Lake do not implement the + * full length of the capability, only first 32 + * dwords so hard-code it here. + */ + if (!vsec_id && + (tb_switch_is_ice_lake(port->sw) || + tb_switch_is_tiger_lake(port->sw))) + length = 32; + } + break; + + case TB_PORT_CAP_USB4: + length = PORT_CAP_USB4_LEN; + break; + + default: + seq_printf(s, "0x%04x <unsupported capability 0x%02x>\n", + cap, header.basic.cap); + return; + } + + cap_show(s, NULL, port, cap, header.basic.cap, vsec_id, length); +} + +static void port_caps_show(struct tb_port *port, struct seq_file *s) +{ + int cap; + + cap = tb_port_next_cap(port, 0); + while (cap > 0) { + port_cap_show(port, s, cap); + cap = tb_port_next_cap(port, cap); + } +} + +static int port_basic_regs_show(struct tb_port *port, struct seq_file *s) +{ + u32 data[PORT_CAP_BASIC_LEN]; + int ret, i; + + ret = tb_port_read(port, data, TB_CFG_PORT, 0, ARRAY_SIZE(data)); + if (ret) + return ret; + + for (i = 0; i < ARRAY_SIZE(data); i++) + seq_printf(s, "0x%04x %4d 0x00 0x00 0x%08x\n", i, i, data[i]); + + return 0; +} + +static int port_regs_show(struct seq_file *s, void *not_used) +{ + struct tb_port *port = s->private; + struct tb_switch *sw = port->sw; + struct tb *tb = sw->tb; + int ret; + + pm_runtime_get_sync(&sw->dev); + + if (mutex_lock_interruptible(&tb->lock)) { + ret = -ERESTARTSYS; + goto out_rpm_put; + } + + seq_puts(s, "# offset relative_offset cap_id vs_cap_id value\n"); + + ret = port_basic_regs_show(port, s); + if (ret) + goto out_unlock; + + port_caps_show(port, s); + +out_unlock: + mutex_unlock(&tb->lock); +out_rpm_put: + pm_runtime_mark_last_busy(&sw->dev); + pm_runtime_put_autosuspend(&sw->dev); + + return ret; +} +DEBUGFS_ATTR_RW(port_regs); + +static void switch_cap_show(struct tb_switch *sw, struct seq_file *s, + unsigned int cap) +{ + struct tb_cap_any header; + int ret, length; + u8 vsec_id = 0; + + ret = tb_sw_read(sw, &header, TB_CFG_SWITCH, cap, 1); + if (ret) { + seq_printf(s, "0x%04x <capability read failed>\n", cap); + return; + } + + if (header.basic.cap == TB_SWITCH_CAP_VSE) { + if (!header.extended_short.length) { + ret = tb_sw_read(sw, (u32 *)&header + 1, TB_CFG_SWITCH, + cap + 1, 1); + if (ret) { + seq_printf(s, "0x%04x <capability read failed>\n", + cap + 1); + return; + } + length = header.extended_long.length; + } else { + length = header.extended_short.length; + } + vsec_id = header.extended_short.vsec_id; + } else { + if (header.basic.cap == TB_SWITCH_CAP_TMU) { + length = SWITCH_CAP_TMU_LEN; + } else { + seq_printf(s, "0x%04x <unknown capability 0x%02x>\n", + cap, header.basic.cap); + return; + } + } + + cap_show(s, sw, NULL, cap, header.basic.cap, vsec_id, length); +} + +static void switch_caps_show(struct tb_switch *sw, struct seq_file *s) +{ + int cap; + + cap = tb_switch_next_cap(sw, 0); + while (cap > 0) { + switch_cap_show(sw, s, cap); + cap = tb_switch_next_cap(sw, cap); + } +} + +static int switch_basic_regs_show(struct tb_switch *sw, struct seq_file *s) +{ + u32 data[SWITCH_CAP_BASIC_LEN]; + size_t dwords; + int ret, i; + + /* Only USB4 has the additional registers */ + if (tb_switch_is_usb4(sw)) + dwords = ARRAY_SIZE(data); + else + dwords = 7; + + ret = tb_sw_read(sw, data, TB_CFG_SWITCH, 0, dwords); + if (ret) + return ret; + + for (i = 0; i < dwords; i++) + seq_printf(s, "0x%04x %4d 0x00 0x00 0x%08x\n", i, i, data[i]); + + return 0; +} + +static int switch_regs_show(struct seq_file *s, void *not_used) +{ + struct tb_switch *sw = s->private; + struct tb *tb = sw->tb; + int ret; + + pm_runtime_get_sync(&sw->dev); + + if (mutex_lock_interruptible(&tb->lock)) { + ret = -ERESTARTSYS; + goto out_rpm_put; + } + + seq_puts(s, "# offset relative_offset cap_id vs_cap_id value\n"); + + ret = switch_basic_regs_show(sw, s); + if (ret) + goto out_unlock; + + switch_caps_show(sw, s); + +out_unlock: + mutex_unlock(&tb->lock); +out_rpm_put: + pm_runtime_mark_last_busy(&sw->dev); + pm_runtime_put_autosuspend(&sw->dev); + + return ret; +} +DEBUGFS_ATTR_RW(switch_regs); + +static int path_show_one(struct tb_port *port, struct seq_file *s, int hopid) +{ + u32 data[PATH_LEN]; + int ret, i; + + ret = tb_port_read(port, data, TB_CFG_HOPS, hopid * PATH_LEN, + ARRAY_SIZE(data)); + if (ret) { + seq_printf(s, "0x%04x <not accessible>\n", hopid * PATH_LEN); + return ret; + } + + for (i = 0; i < ARRAY_SIZE(data); i++) { + seq_printf(s, "0x%04x %4d 0x%02x 0x%08x\n", + hopid * PATH_LEN + i, i, hopid, data[i]); + } + + return 0; +} + +static int path_show(struct seq_file *s, void *not_used) +{ + struct tb_port *port = s->private; + struct tb_switch *sw = port->sw; + struct tb *tb = sw->tb; + int start, i, ret = 0; + + pm_runtime_get_sync(&sw->dev); + + if (mutex_lock_interruptible(&tb->lock)) { + ret = -ERESTARTSYS; + goto out_rpm_put; + } + + seq_puts(s, "# offset relative_offset in_hop_id value\n"); + + /* NHI and lane adapters have entry for path 0 */ + if (tb_port_is_null(port) || tb_port_is_nhi(port)) { + ret = path_show_one(port, s, 0); + if (ret) + goto out_unlock; + } + + start = tb_port_is_nhi(port) ? 1 : TB_PATH_MIN_HOPID; + + for (i = start; i <= port->config.max_in_hop_id; i++) { + ret = path_show_one(port, s, i); + if (ret) + break; + } + +out_unlock: + mutex_unlock(&tb->lock); +out_rpm_put: + pm_runtime_mark_last_busy(&sw->dev); + pm_runtime_put_autosuspend(&sw->dev); + + return ret; +} +DEBUGFS_ATTR_RO(path); + +static int counter_set_regs_show(struct tb_port *port, struct seq_file *s, + int counter) +{ + u32 data[COUNTER_SET_LEN]; + int ret, i; + + ret = tb_port_read(port, data, TB_CFG_COUNTERS, + counter * COUNTER_SET_LEN, ARRAY_SIZE(data)); + if (ret) { + seq_printf(s, "0x%04x <not accessible>\n", + counter * COUNTER_SET_LEN); + return ret; + } + + for (i = 0; i < ARRAY_SIZE(data); i++) { + seq_printf(s, "0x%04x %4d 0x%02x 0x%08x\n", + counter * COUNTER_SET_LEN + i, i, counter, data[i]); + } + + return 0; +} + +static int counters_show(struct seq_file *s, void *not_used) +{ + struct tb_port *port = s->private; + struct tb_switch *sw = port->sw; + struct tb *tb = sw->tb; + int i, ret = 0; + + pm_runtime_get_sync(&sw->dev); + + if (mutex_lock_interruptible(&tb->lock)) { + ret = -ERESTARTSYS; + goto out; + } + + seq_puts(s, "# offset relative_offset counter_id value\n"); + + for (i = 0; i < port->config.max_counters; i++) { + ret = counter_set_regs_show(port, s, i); + if (ret) + break; + } + + mutex_unlock(&tb->lock); + +out: + pm_runtime_mark_last_busy(&sw->dev); + pm_runtime_put_autosuspend(&sw->dev); + + return ret; +} +DEBUGFS_ATTR_RW(counters); + +/** + * tb_switch_debugfs_init() - Add debugfs entries for router + * @sw: Pointer to the router + * + * Adds debugfs directories and files for given router. + */ +void tb_switch_debugfs_init(struct tb_switch *sw) +{ + struct dentry *debugfs_dir; + struct tb_port *port; + + debugfs_dir = debugfs_create_dir(dev_name(&sw->dev), tb_debugfs_root); + sw->debugfs_dir = debugfs_dir; + debugfs_create_file("regs", DEBUGFS_MODE, debugfs_dir, sw, + &switch_regs_fops); + + tb_switch_for_each_port(sw, port) { + struct dentry *debugfs_dir; + char dir_name[10]; + + if (port->disabled) + continue; + if (port->config.type == TB_TYPE_INACTIVE) + continue; + + snprintf(dir_name, sizeof(dir_name), "port%d", port->port); + debugfs_dir = debugfs_create_dir(dir_name, sw->debugfs_dir); + debugfs_create_file("regs", DEBUGFS_MODE, debugfs_dir, + port, &port_regs_fops); + debugfs_create_file("path", 0400, debugfs_dir, port, + &path_fops); + if (port->config.counters_support) + debugfs_create_file("counters", 0600, debugfs_dir, port, + &counters_fops); + } +} + +/** + * tb_switch_debugfs_remove() - Remove all router debugfs entries + * @sw: Pointer to the router + * + * Removes all previously added debugfs entries under this router. + */ +void tb_switch_debugfs_remove(struct tb_switch *sw) +{ + debugfs_remove_recursive(sw->debugfs_dir); +} + +void tb_debugfs_init(void) +{ + tb_debugfs_root = debugfs_create_dir("thunderbolt", NULL); +} + +void tb_debugfs_exit(void) +{ + debugfs_remove_recursive(tb_debugfs_root); +} diff --git a/drivers/thunderbolt/domain.c b/drivers/thunderbolt/domain.c index fa7fa3ce5426..00d66f06804a 100644 --- a/drivers/thunderbolt/domain.c +++ b/drivers/thunderbolt/domain.c @@ -800,12 +800,20 @@ int tb_domain_init(void) { int ret; + tb_debugfs_init(); ret = tb_xdomain_init(); if (ret) - return ret; + goto err_debugfs; ret = bus_register(&tb_bus_type); if (ret) - tb_xdomain_exit(); + goto err_xdomain; + + return 0; + +err_xdomain: + tb_xdomain_exit(); +err_debugfs: + tb_debugfs_exit(); return ret; } @@ -816,4 +824,5 @@ void tb_domain_exit(void) ida_destroy(&tb_domain_ida); tb_nvm_exit(); tb_xdomain_exit(); + tb_debugfs_exit(); } diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 9c00c2810d03..c3c496529139 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -2517,6 +2517,7 @@ int tb_switch_add(struct tb_switch *sw) pm_request_autosuspend(&sw->dev); } + tb_switch_debugfs_init(sw); return 0; } @@ -2532,6 +2533,8 @@ void tb_switch_remove(struct tb_switch *sw) { struct tb_port *port; + tb_switch_debugfs_remove(sw); + if (sw->rpm) { pm_runtime_get_sync(&sw->dev); pm_runtime_disable(&sw->dev); diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 3035258b3afa..450f9cf16005 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -125,6 +125,7 @@ struct tb_switch_tmu { * @rpm: The switch supports runtime PM * @authorized: Whether the switch is authorized by user or policy * @security_level: Switch supported security level + * @debugfs_dir: Pointer to the debugfs structure * @key: Contains the key used to challenge the device or %NULL if not * supported. Size of the key is %TB_SWITCH_KEY_SIZE. * @connection_id: Connection ID used with ICM messaging @@ -166,6 +167,7 @@ struct tb_switch { bool rpm; unsigned int authorized; enum tb_security_level security_level; + struct dentry *debugfs_dir; u8 *key; u8 connection_id; u8 connection_key; @@ -1010,4 +1012,16 @@ void tb_acpi_add_links(struct tb_nhi *nhi); static inline void tb_acpi_add_links(struct tb_nhi *nhi) { } #endif +#ifdef CONFIG_DEBUG_FS +void tb_debugfs_init(void); +void tb_debugfs_exit(void); +void tb_switch_debugfs_init(struct tb_switch *sw); +void tb_switch_debugfs_remove(struct tb_switch *sw); +#else +static inline void tb_debugfs_init(void) { } +static inline void tb_debugfs_exit(void) { } +static inline void tb_switch_debugfs_init(struct tb_switch *sw) { } +static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { } +#endif + #endif diff --git a/drivers/thunderbolt/tb_regs.h b/drivers/thunderbolt/tb_regs.h index c33751be0f56..e7d9529822fa 100644 --- a/drivers/thunderbolt/tb_regs.h +++ b/drivers/thunderbolt/tb_regs.h @@ -39,6 +39,7 @@ enum tb_switch_vse_cap { enum tb_port_cap { TB_PORT_CAP_PHY = 0x01, + TB_PORT_CAP_POWER = 0x02, TB_PORT_CAP_TIME1 = 0x03, TB_PORT_CAP_ADAP = 0x04, TB_PORT_CAP_VSE = 0x05, @@ -252,7 +253,8 @@ struct tb_regs_port_header { /* DWORD 1 */ u32 first_cap_offset:8; u32 max_counters:11; - u32 __unknown1:5; + u32 counters_support:1; + u32 __unknown1:4; u32 revision:8; /* DWORD 2 */ enum tb_port_type type:24; |