The output from "dm tree" or "dm uclass" is a bit annoying if the number of devices available on the system is huge. (This is especially true on sandbox when I debug some DM code.)

With this patch, we can specify the uclass name or the device name that we are interested in in order to limit the output.

For instance,

=> dm uclass usb uclass 121: usb 0 usb@1 @ 0bcff8b0, seq 1

uclass 124: usb

=> dm tree usb:usb@1 Class Index Probed Driver Name ----------------------------------------------------------- usb 0 [ ] usb_sandbox usb@1 usb_hub 0 [ ] usb_hub `-- hub usb_emul 0 [ ] usb_sandbox_hub `-- hub-emul usb_emul 1 [ ] usb_sandbox_flash |-- flash-stick@0 usb_emul 2 [ ] usb_sandbox_flash |-- flash-stick@1 usb_emul 3 [ ] usb_sandbox_flash |-- flash-stick@2 usb_emul 4 [ ] usb_sandbox_keyb `-- keyb@3

If you want forward-matching against a uclass or udevice name, you can specify "-e" option.

=> dm uclass -e usb uclass 15: usb_emul 0 hub-emul @ 0bcffb00, seq 0 1 flash-stick@0 @ 0bcffc30, seq 1 2 flash-stick@1 @ 0bcffdc0, seq 2 3 flash-stick@2 @ 0bcfff50, seq 3 4 keyb@3 @ 0bd000e0, seq 4

uclass 64: usb_mass_storage

uclass 121: usb 0 usb@1 @ 0bcff8b0, seq 1

uclass 122: usb_dev_generic

uclass 123: usb_hub 0 hub @ 0bcff9b0, seq 0

uclass 124: usb

=> dm tree -e usb Class Index Probed Driver Name ----------------------------------------------------------- usb 0 [ ] usb_sandbox usb@1 usb_hub 0 [ ] usb_hub `-- hub usb_emul 0 [ ] usb_sandbox_hub `-- hub-emul usb_emul 1 [ ] usb_sandbox_flash |-- flash-stick@0 usb_emul 2 [ ] usb_sandbox_flash |-- flash-stick@1 usb_emul 3 [ ] usb_sandbox_flash |-- flash-stick@2 usb_emul 4 [ ] usb_sandbox_keyb `-- keyb@3

Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- v2 - allow for forward-matching against the name - update command doc --- cmd/dm.c | 48 ++++++++++++++---- doc/usage/cmd/dm.rst | 30 ++++++++++- drivers/core/dump.c | 116 ++++++++++++++++++++++++++++++++----------- include/dm/util.h | 15 ++++-- 4 files changed, 165 insertions(+), 44 deletions(-)

diff --git a/cmd/dm.c b/cmd/dm.c index 3263547cbec6..1aa86aab9c1c 100644 --- a/cmd/dm.c +++ b/cmd/dm.c @@ -59,11 +59,26 @@ static int do_dm_dump_static_driver_info(struct cmd_tbl *cmdtp, int flag, static int do_dm_dump_tree(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { - bool sort; - - sort = argc > 1 && !strcmp(argv[1], "-s"); - - dm_dump_tree(sort); + bool extended = false, sort = false; + char *device = NULL; + + for (; argc > 1; argc--, argv++) { + if (argv[1][0] != '-') + break; + + if (!strcmp(argv[1], "-e")) { + extended = true; + } else if (!strcmp(argv[1], "-s")) { + sort = true; + } else { + printf("Unknown parameter: %s\n", argv[1]); + return 0; + } + } + if (argc > 1) + device = argv[1]; + + dm_dump_tree(device, extended, sort);

return 0; } @@ -71,7 +86,20 @@ static int do_dm_dump_tree(struct cmd_tbl *cmdtp, int flag, int argc, static int do_dm_dump_uclass(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { - dm_dump_uclass(); + bool extended = false; + char *uclass = NULL; + + if (argc > 1) { + if (!strcmp(argv[1], "-e")) { + extended = true; + argc--; + argv++; + } + if (argc > 1) + uclass = argv[1]; + } + + dm_dump_uclass(uclass, extended);

return 0; } @@ -91,8 +119,8 @@ static char dm_help_text[] = "dm drivers Dump list of drivers with uclass and instances\n" DM_MEM_HELP "dm static Dump list of drivers with static platform data\n" - "dm tree [-s] Dump tree of driver model devices (-s=sort)\n" - "dm uclass Dump list of instances for each uclass" + "dm tree [-s][-e][name] Dump tree of driver model devices (-s=sort)\n" + "dm uclass [-e][name] Dump list of instances for each uclass" ; #endif

@@ -102,5 +130,5 @@ U_BOOT_CMD_WITH_SUBCMDS(dm, "Driver model low level access", dm_help_text, U_BOOT_SUBCMD_MKENT(drivers, 1, 1, do_dm_dump_drivers), DM_MEM U_BOOT_SUBCMD_MKENT(static, 1, 1, do_dm_dump_static_driver_info), - U_BOOT_SUBCMD_MKENT(tree, 2, 1, do_dm_dump_tree), - U_BOOT_SUBCMD_MKENT(uclass, 1, 1, do_dm_dump_uclass)); + U_BOOT_SUBCMD_MKENT(tree, 4, 1, do_dm_dump_tree), + U_BOOT_SUBCMD_MKENT(uclass, 3, 1, do_dm_dump_uclass)); diff --git a/doc/usage/cmd/dm.rst b/doc/usage/cmd/dm.rst index 74c6b01e3619..12b7edeed685 100644 --- a/doc/usage/cmd/dm.rst +++ b/doc/usage/cmd/dm.rst @@ -12,8 +12,8 @@ Synopis dm devres dm drivers dm static - dm tree [-s] - dm uclass + dm tree [-s][-e] [uclass name] + dm uclass [-e] [udevice name]

Description ----------- @@ -127,6 +127,12 @@ If -s is given, the top-level devices (those which are children of the root device) are shown sorted in order of uclass ID, so it is easier to find a particular device type.

+If -e is given, forward-matching against existing devices is +made and only the matched devices are shown. + +If a device name is given, forward-matching against existing devices is +made and only the matched devices are shown. + dm uclass ~~~~~~~~~

@@ -140,6 +146,11 @@ For each device, the format is:: where `n` is the index within the uclass, `a` is the address of the device in memory and `s` is the sequence number of the device.

+If -e is given, forward-matching against existing uclasses is +made and only the matched uclasses are shown. + +If no uclass name is given, all the uclasses are shown. +

Examples -------- @@ -409,6 +420,15 @@ This example shows the abridged sandbox output:: nop 8 [ ] scmi_voltage_domain `-- regulators regulator 5 [ ] scmi_regulator |-- reg@0 regulator 6 [ ] scmi_regulator `-- reg@1 + => dm tree pinc + pinctrl 0 [ + ] sandbox_pinctrl_gpio pinctrl-gpio + gpio 1 [ + ] sandbox_gpio |-- base-gpios + nop 0 [ + ] gpio_hog | |-- hog_input_active_low + nop 1 [ + ] gpio_hog | |-- hog_input_active_high + nop 2 [ + ] gpio_hog | |-- hog_output_low + nop 3 [ + ] gpio_hog | `-- hog_output_high + gpio 2 [ ] sandbox_gpio |-- extra-gpios + gpio 3 [ ] sandbox_gpio `-- pinmux-gpios =>

@@ -487,4 +507,10 @@ This example shows the abridged sandbox output:: 0 * gpio-wdt @ 0301c070, seq 0 1 * wdt@0 @ 03021710, seq 1

+ => dm uclass blk + uclass 22: blk + 0 mmc2.blk @ 0301ca00, seq 0 + 1 mmc1.blk @ 0301cee0, seq 1 + 2 mmc0.blk @ 0301d380, seq 2 + => diff --git a/drivers/core/dump.c b/drivers/core/dump.c index 3e77832a3a00..4023b390f542 100644 --- a/drivers/core/dump.c +++ b/drivers/core/dump.c @@ -85,29 +85,65 @@ static void show_devices(struct udevice *dev, int depth, int last_flag, } }

-void dm_dump_tree(bool sort) +static void dm_dump_tree_single(struct udevice *dev, bool sort) { - struct udevice *root; + int dev_count, uclasses; + struct udevice **devs = NULL;

- root = dm_root(); - if (root) { - int dev_count, uclasses; - struct udevice **devs = NULL; - - dm_get_stats(&dev_count, &uclasses); - - printf(" Class Index Probed Driver Name\n"); - printf("-----------------------------------------------------------\n"); - if (sort) { - devs = calloc(dev_count, sizeof(struct udevice *)); - if (!devs) { - printf("(out of memory)\n"); - return; + dm_get_stats(&dev_count, &uclasses); + + if (sort) { + devs = calloc(dev_count, sizeof(struct udevice *)); + if (!devs) { + printf("(out of memory)\n"); + return; + } + } + show_devices(dev, -1, 0, devs); + free(devs); +} + +static void dm_dump_tree_recursive(struct udevice *dev, char *dev_name, + bool extended, bool sort) +{ + struct udevice *child; + size_t len; + + len = strlen(dev_name); + + device_foreach_child(child, dev) { + if (extended) { + if (!strncmp(child->name, dev_name, len)) { + dm_dump_tree_single(child, sort); + continue; + } + } else { + if (!strcmp(child->name, dev_name)) { + dm_dump_tree_single(child, sort); + continue; } } - show_devices(root, -1, 0, devs); - free(devs); + dm_dump_tree_recursive(child, dev_name, extended, sort); + } +} + +void dm_dump_tree(char *dev_name, bool extended, bool sort) +{ + struct udevice *root; + + printf(" Class Index Probed Driver Name\n"); + printf("-----------------------------------------------------------\n"); + + root = dm_root(); + if (!root) + return; + + if (!dev_name || !strcmp(dev_name, "root")) { + dm_dump_tree_single(root, sort); + return; } + + dm_dump_tree_recursive(root, dev_name, extended, sort); }

/** @@ -127,26 +163,50 @@ static void dm_display_line(struct udevice *dev, int index) puts("\n"); }

-void dm_dump_uclass(void) +static void dm_dump_uclass_single(enum uclass_id id) { struct uclass *uc; + struct udevice *dev; + int i = 0, ret; + + ret = uclass_get(id, &uc); + if (ret) + return; + + printf("uclass %d: %s\n", id, uc->uc_drv->name); + uclass_foreach_dev(dev, uc) { + dm_display_line(dev, i); + i++; + } + puts("\n"); +} + +void dm_dump_uclass(char *uclass, bool extended) +{ + struct uclass *uc; + enum uclass_id id; + bool matching; int ret; - int id;

- for (id = 0; id < UCLASS_COUNT; id++) { - struct udevice *dev; - int i = 0; + matching = !!(uclass && strcmp(uclass, "root"));

+ for (id = 0; id < UCLASS_COUNT; id++) { ret = uclass_get(id, &uc); if (ret) continue;

- printf("uclass %d: %s\n", id, uc->uc_drv->name); - uclass_foreach_dev(dev, uc) { - dm_display_line(dev, i); - i++; + if (matching) { + if (extended) { + if (!strncmp(uc->uc_drv->name, uclass, + strlen(uclass))) + dm_dump_uclass_single(id); + } else { + if (!strcmp(uc->uc_drv->name, uclass)) + dm_dump_uclass_single(id); + } + } else { + dm_dump_uclass_single(id); } - puts("\n"); } }

diff --git a/include/dm/util.h b/include/dm/util.h index 4bb49e9e8c01..89206cc49669 100644 --- a/include/dm/util.h +++ b/include/dm/util.h @@ -27,14 +27,21 @@ struct list_head; int list_count_items(struct list_head *head);

/** - * Dump out a tree of all devices + * Dump out a tree of all devices starting @uclass * + * @dev_name: udevice name + * @extended: true if forword-matching expected * @sort: Sort by uclass name */ -void dm_dump_tree(bool sort); +void dm_dump_tree(char *dev_name, bool extended, bool sort);

-/* Dump out a list of uclasses and their devices */ -void dm_dump_uclass(void); +/* + * Dump out a list of uclasses and their devices + * + * @uclass: uclass name + * @extended: true if forword-matching expected + */ +void dm_dump_uclass(char *uclass, bool extended);

#ifdef CONFIG_DEBUG_DEVRES /* Dump out a list of device resources */