usb_link.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <devfsadm.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <strings.h>
extern char *devfsadm_get_devices_dir();
static int usb_process(di_minor_t minor, di_node_t node);
static void ugen_create_link(char *p_path, char *node_name,
di_node_t node, di_minor_t minor);
/* Rules for creating links */
static devfsadm_create_t usb_cbt[] = {
{ "usb", NULL, "usb_ac", DRV_EXACT,
ILEVEL_0, usb_process },
{ "usb", NULL, "usb_as", DRV_EXACT,
ILEVEL_0, usb_process },
{ "usb", NULL, "ddivs_usbc", DRV_EXACT,
ILEVEL_0, usb_process },
{ "usb", NULL, "hid", DRV_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_NEXUS, "hubd", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_NEXUS, "ohci", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_NEXUS, "ehci", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_SCSI_NEXUS, "scsa2usb", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_UGEN, "scsa2usb", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_NEXUS, "uhci", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_UGEN, "ugen", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_NEXUS, "usb_mid", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_UGEN, "usb_mid", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_PRINTER, "usbprn", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
{ "usb", DDI_NT_UGEN, "usbprn", DRV_EXACT|TYPE_EXACT,
ILEVEL_0, usb_process },
};
/* For debug printing (-V filter) */
static char *debug_mid = "usb_mid";
DEVFSADM_CREATE_INIT_V0(usb_cbt);
/* USB device links */
#define USB_LINK_RE_AUDIO "^usb/audio[0-9]+$"
#define USB_LINK_RE_AUDIOMUX "^usb/audio-mux[0-9]+$"
#define USB_LINK_RE_AUDIOCTL "^usb/audio-control[0-9]+$"
#define USB_LINK_RE_AUDIOSTREAM "^usb/audio-stream[0-9]+$"
#define USB_LINK_RE_DDIVS_USBC "^usb/ddivs_usbc[0-9]+$"
#define USB_LINK_RE_DEVICE "^usb/device[0-9]+$"
#define USB_LINK_RE_HID "^usb/hid[0-9]+$"
#define USB_LINK_RE_HUB "^usb/hub[0-9]+$"
#define USB_LINK_RE_MASS_STORE "^usb/mass-storage[0-9]+$"
#define USB_LINK_RE_UGEN "^usb/[0-9,a-f]+\\.[0-9,a-f]+/[0-9]+/.+$"
#define USB_LINK_RE_USBPRN "^usb/printer[0-9]+$"
/* Rules for removing links */
static devfsadm_remove_t usb_remove_cbt[] = {
{ "usb", USB_LINK_RE_AUDIO, RM_POST | RM_HOT | RM_ALWAYS, ILEVEL_0,
devfsadm_rm_all },
{ "usb", USB_LINK_RE_AUDIOMUX, RM_POST | RM_HOT | RM_ALWAYS, ILEVEL_0,
devfsadm_rm_all },
{ "usb", USB_LINK_RE_AUDIOCTL, RM_POST | RM_HOT | RM_ALWAYS, ILEVEL_0,
devfsadm_rm_all },
{ "usb", USB_LINK_RE_AUDIOSTREAM, RM_POST | RM_HOT | RM_ALWAYS,
ILEVEL_0, devfsadm_rm_all },
{ "usb", USB_LINK_RE_DDIVS_USBC, RM_POST | RM_HOT | RM_ALWAYS,
ILEVEL_0, devfsadm_rm_all },
{ "usb", USB_LINK_RE_DEVICE, RM_POST | RM_HOT, ILEVEL_0,
devfsadm_rm_all },
{ "usb", USB_LINK_RE_HID, RM_POST | RM_HOT | RM_ALWAYS, ILEVEL_0,
devfsadm_rm_all },
{ "usb", USB_LINK_RE_HUB, RM_POST | RM_HOT, ILEVEL_0, devfsadm_rm_all },
{ "usb", USB_LINK_RE_MASS_STORE, RM_POST | RM_HOT | RM_ALWAYS,
ILEVEL_0, devfsadm_rm_all },
{ "usb", USB_LINK_RE_UGEN, RM_POST | RM_HOT | RM_ALWAYS, ILEVEL_0,
devfsadm_rm_all },
{ "usb", USB_LINK_RE_USBPRN, RM_POST | RM_HOT | RM_ALWAYS, ILEVEL_0,
devfsadm_rm_link },
};
/*
* Rules for different USB devices except ugen which is dynamically
* created
*/
static devfsadm_enumerate_t audio_rules[1] =
{"^usb$/^audio([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t audio_mux_rules[1] =
{"^usb$/^audio-mux([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t audio_control_rules[1] =
{"^usb$/^audio-control([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t audio_stream_rules[1] =
{"^usb$/^audio-stream([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t ddivs_usbc_rules[1] =
{"^usb$/^ddivs_usbc([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t device_rules[1] =
{"^usb$/^device([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t hid_rules[1] =
{"^usb$/^hid([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t hub_rules[1] =
{"^usb$/^hub([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t mass_storage_rules[1] =
{"^usb$/^mass-storage([0-9]+)$", 1, MATCH_ALL};
static devfsadm_enumerate_t usbprn_rules[1] =
{"^usb$/^printer([0-9]+)$", 1, MATCH_ALL};
DEVFSADM_REMOVE_INIT_V0(usb_remove_cbt);
int
minor_init(void)
{
devfsadm_print(debug_mid, "usb_link: minor_init\n");
return (DEVFSADM_SUCCESS);
}
int
minor_fini(void)
{
devfsadm_print(debug_mid, "usb_link: minor_fini\n");
return (DEVFSADM_SUCCESS);
}
typedef enum {
DRIVER_HUBD = 0,
DRIVER_OHCI = 1,
DRIVER_EHCI = 2,
DRIVER_UHCI = 3,
DRIVER_USB_AC = 4,
DRIVER_USB_AS = 5,
DRIVER_HID = 6,
DRIVER_USB_MID = 7,
DRIVER_DDIVS_USBC = 8,
DRIVER_SCSA2USB = 9,
DRIVER_USBPRN = 10,
DRIVER_UGEN = 11,
DRIVER_UNKNOWN = 12
} driver_defs_t;
typedef struct {
char *driver_name;
int index;
} driver_name_table_entry_t;
driver_name_table_entry_t driver_name_table[] = {
{ "hubd", DRIVER_HUBD },
{ "ohci", DRIVER_OHCI },
{ "ehci", DRIVER_EHCI },
{ "uhci", DRIVER_UHCI },
{ "usb_ac", DRIVER_USB_AC },
{ "usb_as", DRIVER_USB_AS },
{ "hid", DRIVER_HID },
{ "usb_mid", DRIVER_USB_MID },
{ "ddivs_usbc", DRIVER_DDIVS_USBC },
{ "scsa2usb", DRIVER_SCSA2USB },
{ "usbprn", DRIVER_USBPRN },
{ "ugen", DRIVER_UGEN },
{ NULL, DRIVER_UNKNOWN }
};
/*
* This function is called for every usb minor node.
* Calls enumerate to assign a logical usb id, and then
* devfsadm_mklink to make the link.
*/
static int
usb_process(di_minor_t minor, di_node_t node)
{
devfsadm_enumerate_t rules[1];
char *l_path, *p_path, *buf, *devfspath;
char *minor_nm, *drvr_nm, *name = (char *)NULL;
int i, index;
int create_secondary_link = 0;
minor_nm = di_minor_name(minor);
drvr_nm = di_driver_name(node);
if ((minor_nm == NULL) || (drvr_nm == NULL)) {
return (DEVFSADM_CONTINUE);
}
devfsadm_print(debug_mid, "usb_process: minor=%s node=%s type=%s\n",
minor_nm, di_node_name(node), di_minor_nodetype(minor));
devfspath = di_devfs_path(node);
if (devfspath == NULL) {
devfsadm_print(debug_mid,
"USB_process: devfspath is NULL\n");
return (DEVFSADM_CONTINUE);
}
l_path = (char *)malloc(PATH_MAX);
if (l_path == NULL) {
di_devfs_path_free(devfspath);
devfsadm_print(debug_mid, "usb_process: malloc() failed\n");
return (DEVFSADM_CONTINUE);
}
p_path = (char *)malloc(PATH_MAX);
if (p_path == NULL) {
devfsadm_print(debug_mid, "usb_process: malloc() failed\n");
di_devfs_path_free(devfspath);
free(l_path);
return (DEVFSADM_CONTINUE);
}
(void) strcpy(p_path, devfspath);
(void) strcat(p_path, ":");
(void) strcat(p_path, minor_nm);
di_devfs_path_free(devfspath);
devfsadm_print(debug_mid, "usb_process: path %s\n", p_path);
for (i = 0; ; i++) {
if ((driver_name_table[i].driver_name == NULL) ||
(strcmp(drvr_nm, driver_name_table[i].driver_name) == 0)) {
index = driver_name_table[i].index;
break;
}
}
if (strcmp(di_minor_nodetype(minor), DDI_NT_UGEN) == 0) {
ugen_create_link(p_path, minor_nm, node, minor);
free(l_path);
free(p_path);
return (DEVFSADM_CONTINUE);
}
/* Figure out which rules to apply */
switch (index) {
case DRIVER_HUBD:
case DRIVER_OHCI:
case DRIVER_EHCI:
case DRIVER_UHCI:
rules[0] = hub_rules[0]; /* For HUBs */
name = "hub";
break;
case DRIVER_USB_AC:
if (strcmp(minor_nm, "sound,audio") == 0) {
rules[0] = audio_rules[0];
name = "audio"; /* For audio */
create_secondary_link = 1;
} else if (strcmp(minor_nm, "sound,audioctl") == 0) {
rules[0] = audio_control_rules[0];
name = "audio-control"; /* For audio */
create_secondary_link = 1;
} else if (strcmp(minor_nm, "mux") == 0) {
rules[0] = audio_mux_rules[0];
name = "audio-mux"; /* For audio */
} else {
free(l_path);
free(p_path);
return (DEVFSADM_CONTINUE);
}
break;
case DRIVER_USB_AS:
rules[0] = audio_stream_rules[0];
name = "audio-stream"; /* For audio */
break;
case DRIVER_HID:
rules[0] = hid_rules[0];
name = "hid"; /* For HIDs */
break;
case DRIVER_USB_MID:
rules[0] = device_rules[0];
name = "device"; /* For other USB devices */
break;
case DRIVER_DDIVS_USBC:
rules[0] = ddivs_usbc_rules[0];
name = "device"; /* For other USB devices */
break;
case DRIVER_SCSA2USB:
rules[0] = mass_storage_rules[0];
name = "mass-storage"; /* For mass-storage devices */
break;
case DRIVER_USBPRN:
rules[0] = usbprn_rules[0];
name = "printer";
break;
default:
devfsadm_print(debug_mid, "usb_process: unknown driver=%s\n",
drvr_nm);
free(l_path);
free(p_path);
return (DEVFSADM_CONTINUE);
}
/*
* build the physical path from the components.
* find the logical usb id, and stuff it in buf
*/
if (devfsadm_enumerate_int(p_path, 0, &buf, rules, 1)) {
devfsadm_print(debug_mid, "usb_process: exit/continue\n");
free(l_path);
free(p_path);
return (DEVFSADM_CONTINUE);
}
(void) snprintf(l_path, PATH_MAX, "usb/%s%s", name, buf);
devfsadm_print(debug_mid, "usb_process: p_path=%s buf=%s\n",
p_path, buf);
free(buf);
devfsadm_print(debug_mid, "mklink %s -> %s\n", l_path, p_path);
(void) devfsadm_mklink(l_path, node, minor, 0);
if (create_secondary_link) {
/*
* Create secondary links to make newly hotplugged
* usb audio device the primary device.
*/
if (strcmp(name, "audio") == 0) {
(void) devfsadm_secondary_link("audio", l_path, 0);
} else if (strcmp(name, "audio-control") == 0) {
(void) devfsadm_secondary_link("audioctl", l_path, 0);
}
}
free(p_path);
free(l_path);
return (DEVFSADM_CONTINUE);
}
static void
ugen_create_link(char *p_path, char *node_name,
di_node_t node, di_minor_t minor)
{
char *buf, s[MAXPATHLEN];
char *lasts = s;
char *vid, *pid;
char *minor_name;
char ugen_RE[128];
devfsadm_enumerate_t ugen_rules[1];
char l_path[PATH_MAX];
devfsadm_print(debug_mid, "ugen_create_link: p_path=%s name=%s\n",
p_path, node_name);
(void) strlcpy(s, node_name, sizeof (s));
/* get vid, pid and minor name strings */
vid = strtok_r(lasts, ".", &lasts);
pid = strtok_r(NULL, ".", &lasts);
minor_name = lasts;
if ((vid == NULL) || (pid == NULL) || (minor_name == NULL)) {
return;
}
/* create regular expression contain vid and pid */
(void) snprintf(ugen_RE, sizeof (ugen_RE),
"^usb$/^%s\\.%s$/^([0-9]+)$", vid, pid);
devfsadm_print(debug_mid,
"ugen_create_link: ugen_RE=%s minor_name=%s\n",
ugen_RE, minor_name);
bzero(ugen_rules, sizeof (ugen_rules));
ugen_rules[0].re = ugen_RE;
ugen_rules[0].subexp = 1;
ugen_rules[0].flags = MATCH_ADDR;
/*
* build the physical path from the components.
* find the logical usb id, and stuff it in buf
*/
if (devfsadm_enumerate_int(p_path, 0, &buf, ugen_rules, 1)) {
devfsadm_print(debug_mid, "ugen_create_link: exit/continue\n");
return;
}
(void) snprintf(l_path, sizeof (l_path), "usb/%s.%s/%s/%s",
vid, pid, buf, minor_name);
devfsadm_print(debug_mid, "mklink %s -> %s\n", l_path, p_path);
(void) devfsadm_mklink(l_path, node, minor, 0);
free(buf);
}