libdevman: IPC wrapper for devman
This commit is contained in:
Dirk Vogt
parent
77fa5b4116
commit
8c8e44d0ae
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@ -1,8 +1,8 @@
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.include <bsd.own.mk>
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SUBDIR= csu libc libcurses libdriver libnetdriver libedit libm libsys \
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libtimers libutil libbz2 libl libhgfs libz libfetch libarchive \
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libvtreefs libaudiodriver libmthread libexec libusb
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libtimers libutil libbz2 libl libhgfs libz libfetch libarchive \
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libvtreefs libaudiodriver libmthread libexec libdevman libusb
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.if ${COMPILER_TYPE} == "ack"
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SUBDIR+= ack/libd ack/libe ack/libfp ack/liby
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8
lib/libdevman/Makefile
Normal file
8
lib/libdevman/Makefile
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LIB = devman
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SRCS = generic.c \
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usb.c
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.include <bsd.lib.mk>
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280
lib/libdevman/generic.c
Normal file
280
lib/libdevman/generic.c
Normal file
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/queue.h>
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#include <minix/com.h>
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#include <minix/ipc.h>
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#include <minix/const.h>
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#include <minix/devman.h>
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#include <minix/safecopies.h>
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#include "local.h"
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PRIVATE endpoint_t devman_ep;
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FORWARD _PROTOTYPE( int save_string,
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(char *buffer, char *src, size_t *offset));
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PRIVATE TAILQ_HEAD(devlist_head, devman_dev) dev_list;
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/****************************************************************************
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* save_string *
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***************************************************************************/
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PRIVATE int save_string(char *buffer, char *src, size_t *offset)
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{
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unsigned old_offset = *offset;
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size_t len = strlen(src) + 1;
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memcpy(buffer + *offset, src, len);
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*offset += len;
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return old_offset;
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}
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/****************************************************************************
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* serialize_dev *
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***************************************************************************/
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PUBLIC void *serialize_dev(struct devman_dev *dev, size_t *overall_size)
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{
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/* determine size of serialized version of dev */
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char *buffer;
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char *string_buffer;
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size_t string_buffer_offset;
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size_t count = 0;
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size_t size = sizeof(struct devman_device_info);
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size_t strings_size = strlen(dev->name) + 1;
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struct devman_device_info * serialized_dev;
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struct devman_device_info_entry *entry;
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struct devman_static_attribute *attribute;
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TAILQ_FOREACH(attribute, &dev->attrs, list) {
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strings_size += strlen(attribute->name) + 1;
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strings_size += strlen(attribute->data) + 1;
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size += sizeof(struct devman_device_info_entry);
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count++;
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}
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buffer = malloc(size + strings_size);
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if (buffer == NULL) {
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return NULL;
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}
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string_buffer = buffer;
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string_buffer_offset = size; /* strings start after
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devman_device_info and
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devman_device_info_entries */
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/* serialize device */
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serialized_dev = (struct devman_device_info *) buffer;
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serialized_dev->count = count;
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serialized_dev->parent_dev_id = dev->parent_dev_id;
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serialized_dev->name_offset =
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save_string(string_buffer, dev->name, &string_buffer_offset);
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#if 0
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serialized_dev->bus =
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save_string(string_buffer, dev->bus, &string_buffer_offset);
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#endif
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/* serialize entries */
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entry =
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(struct devman_device_info_entry *)
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(buffer + sizeof(struct devman_device_info));
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TAILQ_FOREACH(attribute, &dev->attrs, list) {
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entry->type = 0; /* TODO: use macro */
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entry->name_offset =
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save_string(string_buffer, attribute->name, &string_buffer_offset);
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entry->data_offset =
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save_string(string_buffer, attribute->data, &string_buffer_offset);
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entry++;
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}
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*overall_size = size + strings_size;
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return buffer;
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}
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/****************************************************************************
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* devman_add_device *
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***************************************************************************/
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PUBLIC int devman_add_device(struct devman_dev *dev)
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{
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message msg;
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int res;
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size_t grant_size;
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void *buf = serialize_dev(dev, &grant_size);
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cp_grant_id_t gid =
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cpf_grant_direct(devman_ep,(vir_bytes) buf,
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grant_size, CPF_READ);
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/* prepare message */
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msg.m_type = DEVMAN_ADD_DEV;
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msg.DEVMAN_GRANT_ID = gid;
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msg.DEVMAN_GRANT_SIZE = grant_size;
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/* send message */
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res = sendrec(devman_ep, &msg);
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if (res != 0) {
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panic("devman_add_device: could not talk to devman: %d", res);
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}
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if (msg.m_type != DEVMAN_REPLY) {
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panic("devman_add_device: got illegal response from devman: %d",
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msg.m_type);
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}
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if (msg.DEVMAN_RESULT != 0) {
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panic("devman_add_device: could add device: %d",
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msg.DEVMAN_RESULT);
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}
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/* store given dev_id to dev */
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dev->dev_id = msg.DEVMAN_DEVICE_ID;
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cpf_revoke(gid);
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free(buf);
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/* put device in list */
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TAILQ_INSERT_HEAD(&dev_list, dev, dev_list);
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return 0;
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}
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/****************************************************************************
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* devman_del_device *
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***************************************************************************/
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PUBLIC int devman_del_device(struct devman_dev *dev)
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{
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message msg;
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int res;
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msg.m_type = DEVMAN_DEL_DEV;
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msg.DEVMAN_DEVICE_ID = dev->dev_id;
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res = sendrec(devman_ep, &msg);
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if (res != 0) {
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panic("devman_del_device: could not talk to devman: %d", res);
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}
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if (msg.m_type != DEVMAN_REPLY) {
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panic("devman_del_device: got illegal response from devman: %d",
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msg.m_type);
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}
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if (msg.DEVMAN_RESULT != 0) {
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panic("devman_del_device: could delete device: %d",
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msg.DEVMAN_RESULT);
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}
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/* remove the device from list */
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TAILQ_REMOVE(&dev_list, dev, dev_list);
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return 0;
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}
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/****************************************************************************
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* devman_get_ep *
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***************************************************************************/
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PUBLIC endpoint_t devman_get_ep()
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{
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return devman_ep;
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}
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/****************************************************************************
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* devman_init *
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***************************************************************************/
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PUBLIC int devman_init()
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{
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int res;
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message msg;
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/* get the endpoint of the HCD */
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res = ds_retrieve_label_endpt("devman", &devman_ep);
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if (res != 0) {
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panic("usb_init: ds_retrieve_label_endpt failed for 'devman': %d", res);
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}
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TAILQ_INIT(&dev_list);
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return res;
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}
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/****************************************************************************
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* do_bind *
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***************************************************************************/
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PRIVATE void do_bind(message *m)
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{
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struct devman_dev *dev;
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int res;
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/* find device */
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TAILQ_FOREACH(dev, &dev_list, dev_list) {
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if (dev->dev_id == m->DEVMAN_DEVICE_ID) {
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if (dev->bind_cb) {
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res = dev->bind_cb(dev->data, m->DEVMAN_ENDPOINT);
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m->m_type = DEVMAN_REPLY;
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m->DEVMAN_RESULT = res;
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send(devman_ep, m);
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return;
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}
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}
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}
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m->m_type = DEVMAN_REPLY;
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m->DEVMAN_RESULT = ENODEV;
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send(devman_ep, m);
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return;
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}
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/****************************************************************************
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* do_unbind *
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***************************************************************************/
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PRIVATE int do_unbind(message *m)
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{
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struct devman_dev *dev;
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int res;
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/* find device */
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TAILQ_FOREACH(dev, &dev_list, dev_list) {
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if (dev->dev_id == m->DEVMAN_DEVICE_ID) {
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if (dev->unbind_cb) {
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res = dev->unbind_cb(dev->data, m->DEVMAN_ENDPOINT);
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m->m_type = DEVMAN_REPLY;
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m->DEVMAN_RESULT = res;
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send(devman_ep, m);
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return;
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}
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}
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}
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m->m_type = DEVMAN_REPLY;
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m->DEVMAN_RESULT = ENODEV;
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send(devman_ep, m);
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}
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/****************************************************************************
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* devman_handle_msg *
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***************************************************************************/
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PUBLIC int devman_handle_msg(message *m)
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{
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/* make sure msg comes from devman server */
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if (m->m_source != devman_ep) {
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/* we don't honor requests from others by answering them */
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return 0;
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}
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switch (m->m_type) {
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case DEVMAN_BIND:
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do_bind(m);
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return 1;
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case DEVMAN_UNBIND:
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do_unbind(m);
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return 1;
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default:
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return 0;
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}
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}
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27
lib/libdevman/local.h
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27
lib/libdevman/local.h
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#ifndef _LIB_LIBDEVMAN_LOCAL
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#define _LIB_LIBDEVMAN_LOCAL
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#include <sys/queue.h>
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#include <minix/com.h>
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#define DEVMAN_DEV_NAME_LEN 32
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struct devman_dev {
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int dev_id;
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int parent_dev_id;
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char name[DEVMAN_DEV_NAME_LEN];
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char *subsys;
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void *data;
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int (*bind_cb) (void *data, endpoint_t ep);
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int (*unbind_cb)(void *data, endpoint_t ep);
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TAILQ_HEAD(static_attribute_head, devman_static_attribute) attrs;
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TAILQ_ENTRY(devman_dev) dev_list;
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};
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struct devman_static_attribute {
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char *name;
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char *data;
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TAILQ_ENTRY(devman_static_attribute) list;
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};
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#endif
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300
lib/libdevman/usb.c
Normal file
300
lib/libdevman/usb.c
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <minix/config.h>
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#include <minix/const.h>
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#include <minix/devman.h>
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#include <minix/usb.h>
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#include "local.h"
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#define CHECKOUTOFMEM(ptr) if(ptr == NULL) \
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panic("Out of memory! (%s, line %d)" \
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__FILE__, __LINE__)
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static int (*bind_cb) (struct devman_usb_bind_cb_data *data, endpoint_t ep);
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static int (*unbind_cb) (struct devman_usb_bind_cb_data *data, endpoint_t ep);
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/****************************************************************************
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* devman_usb_add_attr *
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***************************************************************************/
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PRIVATE void
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devman_usb_add_attr
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(struct devman_dev *dev, char *name, char *data)
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{
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struct devman_static_attribute *attr = (struct devman_static_attribute *)
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malloc(sizeof(struct devman_static_attribute));
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CHECKOUTOFMEM(attr);
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attr->name = malloc((strlen(name)+1)*sizeof(char));
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memcpy(attr->name, name, (strlen(name)+1));
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attr->data = malloc((strlen(data)+1)*sizeof(char));
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memcpy(attr->data, data, (strlen(data)+1));
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TAILQ_INSERT_TAIL(&dev->attrs, attr, list);
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}
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/****************************************************************************
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* add_device_attributes *
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***************************************************************************/
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PRIVATE void
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add_device_attributes
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(struct devman_usb_dev *udev)
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{
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int ret;
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char data[32];
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ret = sprintf(data,"0x%02x",udev->desc->bDeviceClass);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(udev->dev, "bDeviceClass", data);
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ret = sprintf(data,"0x%02x",udev->desc->bDeviceSubClass);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(udev->dev, "bDeviceSubClass", data);
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ret = sprintf(data,"0x%02x",udev->desc->bDeviceProtocol);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(udev->dev, "bDeviceProtocol", data);
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ret = sprintf(data,"0x%04x",UGETW(udev->desc->idVendor));
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(udev->dev, "idVendor", data);
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ret = sprintf(data,"0x%04x",UGETW(udev->desc->idProduct));
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(udev->dev, "idProduct", data);
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if (udev->product)
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devman_usb_add_attr(udev->dev, "Product", udev->product);
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if (udev->manufacturer)
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devman_usb_add_attr(udev->dev, "Manufacturer", udev->manufacturer);
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if (udev->serial)
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devman_usb_add_attr(udev->dev, "SerialNumber", udev->serial);
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devman_usb_add_attr(udev->dev, "dev_type", "USB_DEV");
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}
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/****************************************************************************
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* add_interface_attributes *
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***************************************************************************/
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PRIVATE void
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add_interface_attributes
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(struct devman_usb_interface *intf)
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{
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int ret;
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char data[32];
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ret = sprintf(data,"0x%02x",intf->desc->bInterfaceNumber);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(intf->dev, "bInterfaceNumber", data);
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ret = sprintf(data,"0x%02x",intf->desc->bAlternateSetting);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(intf->dev, "bAlternateSetting", data);
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ret = sprintf(data,"0x%02x",intf->desc->bNumEndpoints);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(intf->dev, "bNumEndpoints", data);
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ret = sprintf(data,"0x%02x",intf->desc->bInterfaceClass);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(intf->dev, "bInterfaceClass", data);
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ret = sprintf(data,"0x%02x",intf->desc->bInterfaceSubClass);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(intf->dev, "bInterfaceSubClass", data);
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ret = sprintf(data,"0x%02x",intf->desc->bInterfaceProtocol);
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if (ret < 0) {
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panic("add_device_attributes: sprintf failed");
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}
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devman_usb_add_attr(intf->dev, "bInterfaceProtocol", data);
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devman_usb_add_attr(intf->dev, "dev_type", "USB_INTF");
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}
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/****************************************************************************
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* devman_usb_device_new *
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***************************************************************************/
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PUBLIC struct devman_usb_dev*
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devman_usb_device_new
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(int dev_id)
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{
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struct devman_usb_dev *udev = NULL;
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struct devman_dev * dev = NULL;
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udev = (struct devman_usb_dev *) malloc(sizeof(struct devman_usb_dev));
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CHECKOUTOFMEM(udev);
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/* allocate device */
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dev = (struct devman_dev *) malloc(sizeof(struct devman_dev));
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CHECKOUTOFMEM(dev);
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udev->dev_id = dev_id;
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udev->dev = dev;
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dev->parent_dev_id = 0; /* For now add it directly to the root dev */
|
||||
|
||||
snprintf(dev->name, DEVMAN_DEV_NAME_LEN, "USB%d", dev_id);
|
||||
|
||||
TAILQ_INIT(&dev->attrs);
|
||||
|
||||
return udev;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* devman_usb_device_delete *
|
||||
***************************************************************************/
|
||||
PUBLIC void devman_usb_device_delete(struct devman_usb_dev *udev)
|
||||
{
|
||||
int i;
|
||||
struct devman_static_attribute *attr,*temp;
|
||||
|
||||
|
||||
for (i=0; i < udev->intf_count; i++) {
|
||||
TAILQ_FOREACH_SAFE(attr, &udev->interfaces[i].dev->attrs, list, temp)
|
||||
{
|
||||
free(attr->name);
|
||||
free(attr->data);
|
||||
free(attr);
|
||||
}
|
||||
free(udev->interfaces[i].dev);
|
||||
}
|
||||
|
||||
TAILQ_FOREACH_SAFE(attr, &udev->dev->attrs, list, temp) {
|
||||
free(attr->name);
|
||||
free(attr->data);
|
||||
free(attr);
|
||||
}
|
||||
|
||||
free(udev->dev);
|
||||
free(udev);
|
||||
}
|
||||
|
||||
PRIVATE int devman_usb_bind_cb(void *data, endpoint_t ep) {
|
||||
if (bind_cb) {
|
||||
return bind_cb((struct devman_usb_bind_cb_data *) data, ep);
|
||||
} else {
|
||||
return ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
PRIVATE int devman_usb_unbind_cb(void *data, endpoint_t ep) {
|
||||
if (unbind_cb) {
|
||||
return unbind_cb((struct devman_usb_bind_cb_data *) data, ep);
|
||||
} else {
|
||||
return ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* devman_usb_device_add *
|
||||
***************************************************************************/
|
||||
PUBLIC int devman_usb_device_add(struct devman_usb_dev *dev)
|
||||
{
|
||||
int i,res = 0;
|
||||
add_device_attributes(dev);
|
||||
|
||||
/* add the USB device */
|
||||
dev->cb_data.dev_id = dev->dev_id;
|
||||
dev->cb_data.interface = -1;
|
||||
|
||||
dev->dev->bind_cb = devman_usb_bind_cb;
|
||||
dev->dev->unbind_cb = devman_usb_unbind_cb;
|
||||
dev->dev->data = &dev->cb_data;
|
||||
|
||||
res = devman_add_device(dev->dev);
|
||||
|
||||
if (res != 0) {
|
||||
panic("devman_usb_device_add(): devman_add_device failed.");
|
||||
}
|
||||
|
||||
/* add the USB interfaces */
|
||||
for (i=0; i < dev->intf_count; i++) {
|
||||
/* prepare */
|
||||
dev->interfaces[i].dev =
|
||||
(struct devman_dev *) malloc(sizeof(struct devman_dev));
|
||||
CHECKOUTOFMEM(dev->interfaces[i].dev);
|
||||
|
||||
TAILQ_INIT(&dev->interfaces[i].dev->attrs);
|
||||
snprintf(dev->interfaces[i].dev->name, DEVMAN_DEV_NAME_LEN,
|
||||
"intf%d", i);
|
||||
|
||||
add_interface_attributes(&dev->interfaces[i]);
|
||||
|
||||
dev->interfaces[i].dev->parent_dev_id = dev->dev->dev_id;
|
||||
|
||||
|
||||
dev->interfaces[i].cb_data.dev_id = dev->dev_id;
|
||||
dev->interfaces[i].cb_data.interface =
|
||||
dev->interfaces[i].desc->bInterfaceNumber;
|
||||
|
||||
dev->interfaces[i].dev->bind_cb = devman_usb_bind_cb;
|
||||
dev->interfaces[i].dev->unbind_cb = devman_usb_unbind_cb;
|
||||
dev->interfaces[i].dev->data = &dev->interfaces[i].cb_data;
|
||||
|
||||
/* add */
|
||||
res = devman_add_device(dev->interfaces[i].dev);
|
||||
|
||||
if (res != 0) {
|
||||
panic("devman_usb_device_add(): devman_add_device failed.");
|
||||
}
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* devman_usb_device_remove *
|
||||
***************************************************************************/
|
||||
PUBLIC int devman_usb_device_remove(struct devman_usb_dev *dev)
|
||||
{
|
||||
int i, res = 0;
|
||||
|
||||
for (i=0; i < dev->intf_count; i++) {
|
||||
|
||||
res = devman_del_device(dev->interfaces[i].dev);
|
||||
|
||||
if (res != 0) {
|
||||
panic("devman_usb_device_remove(): devman_del_device failed.");
|
||||
}
|
||||
}
|
||||
res = devman_del_device(dev->dev);
|
||||
return res;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* devman_usb_init *
|
||||
***************************************************************************/
|
||||
PUBLIC int devman_usb_init
|
||||
(int (*_bind_cb) (struct devman_usb_bind_cb_data *data, endpoint_t ep),
|
||||
int (*_unbind_cb) (struct devman_usb_bind_cb_data *data, endpoint_t ep))
|
||||
{
|
||||
bind_cb = _bind_cb;
|
||||
unbind_cb = _unbind_cb;
|
||||
}
|
||||
|
|
@ -59,7 +59,7 @@ MKDEP_SUFFIXES?= .o .ln
|
|||
# rumpfs_tmpfs rumpfs_udf rumpfs_ufs
|
||||
.for _lib in \
|
||||
c curses driver netdriver edit end m sys timers util bz2 l hgfs \
|
||||
audiodriver exec usb
|
||||
audiodriver exec devman usb
|
||||
.ifndef LIB${_lib:tu}
|
||||
LIB${_lib:tu}= ${DESTDIR}/usr/lib/lib${_lib}.a
|
||||
.if ${COMPILER_TYPE} == "ack"
|
||||
|
|
|
|||
Loading…
Reference in a new issue