libdevman: IPC wrapper for devman

This commit is contained in:
Dirk Vogt 2011-02-25 12:28:07 +00:00
parent 77fa5b4116
commit 8c8e44d0ae
6 changed files with 618 additions and 3 deletions

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@ -2,7 +2,7 @@
SUBDIR= csu libc libcurses libdriver libnetdriver libedit libm libsys \ SUBDIR= csu libc libcurses libdriver libnetdriver libedit libm libsys \
libtimers libutil libbz2 libl libhgfs libz libfetch libarchive \ libtimers libutil libbz2 libl libhgfs libz libfetch libarchive \
libvtreefs libaudiodriver libmthread libexec libusb libvtreefs libaudiodriver libmthread libexec libdevman libusb
.if ${COMPILER_TYPE} == "ack" .if ${COMPILER_TYPE} == "ack"
SUBDIR+= ack/libd ack/libe ack/libfp ack/liby SUBDIR+= ack/libd ack/libe ack/libfp ack/liby

8
lib/libdevman/Makefile Normal file
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@ -0,0 +1,8 @@
LIB = devman
SRCS = generic.c \
usb.c
.include <bsd.lib.mk>

280
lib/libdevman/generic.c Normal file
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@ -0,0 +1,280 @@
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/queue.h>
#include <minix/com.h>
#include <minix/ipc.h>
#include <minix/const.h>
#include <minix/devman.h>
#include <minix/safecopies.h>
#include "local.h"
PRIVATE endpoint_t devman_ep;
FORWARD _PROTOTYPE( int save_string,
(char *buffer, char *src, size_t *offset));
PRIVATE TAILQ_HEAD(devlist_head, devman_dev) dev_list;
/****************************************************************************
* save_string *
***************************************************************************/
PRIVATE int save_string(char *buffer, char *src, size_t *offset)
{
unsigned old_offset = *offset;
size_t len = strlen(src) + 1;
memcpy(buffer + *offset, src, len);
*offset += len;
return old_offset;
}
/****************************************************************************
* serialize_dev *
***************************************************************************/
PUBLIC void *serialize_dev(struct devman_dev *dev, size_t *overall_size)
{
/* determine size of serialized version of dev */
char *buffer;
char *string_buffer;
size_t string_buffer_offset;
size_t count = 0;
size_t size = sizeof(struct devman_device_info);
size_t strings_size = strlen(dev->name) + 1;
struct devman_device_info * serialized_dev;
struct devman_device_info_entry *entry;
struct devman_static_attribute *attribute;
TAILQ_FOREACH(attribute, &dev->attrs, list) {
strings_size += strlen(attribute->name) + 1;
strings_size += strlen(attribute->data) + 1;
size += sizeof(struct devman_device_info_entry);
count++;
}
buffer = malloc(size + strings_size);
if (buffer == NULL) {
return NULL;
}
string_buffer = buffer;
string_buffer_offset = size; /* strings start after
devman_device_info and
devman_device_info_entries */
/* serialize device */
serialized_dev = (struct devman_device_info *) buffer;
serialized_dev->count = count;
serialized_dev->parent_dev_id = dev->parent_dev_id;
serialized_dev->name_offset =
save_string(string_buffer, dev->name, &string_buffer_offset);
#if 0
serialized_dev->bus =
save_string(string_buffer, dev->bus, &string_buffer_offset);
#endif
/* serialize entries */
entry =
(struct devman_device_info_entry *)
(buffer + sizeof(struct devman_device_info));
TAILQ_FOREACH(attribute, &dev->attrs, list) {
entry->type = 0; /* TODO: use macro */
entry->name_offset =
save_string(string_buffer, attribute->name, &string_buffer_offset);
entry->data_offset =
save_string(string_buffer, attribute->data, &string_buffer_offset);
entry++;
}
*overall_size = size + strings_size;
return buffer;
}
/****************************************************************************
* devman_add_device *
***************************************************************************/
PUBLIC int devman_add_device(struct devman_dev *dev)
{
message msg;
int res;
size_t grant_size;
void *buf = serialize_dev(dev, &grant_size);
cp_grant_id_t gid =
cpf_grant_direct(devman_ep,(vir_bytes) buf,
grant_size, CPF_READ);
/* prepare message */
msg.m_type = DEVMAN_ADD_DEV;
msg.DEVMAN_GRANT_ID = gid;
msg.DEVMAN_GRANT_SIZE = grant_size;
/* send message */
res = sendrec(devman_ep, &msg);
if (res != 0) {
panic("devman_add_device: could not talk to devman: %d", res);
}
if (msg.m_type != DEVMAN_REPLY) {
panic("devman_add_device: got illegal response from devman: %d",
msg.m_type);
}
if (msg.DEVMAN_RESULT != 0) {
panic("devman_add_device: could add device: %d",
msg.DEVMAN_RESULT);
}
/* store given dev_id to dev */
dev->dev_id = msg.DEVMAN_DEVICE_ID;
cpf_revoke(gid);
free(buf);
/* put device in list */
TAILQ_INSERT_HEAD(&dev_list, dev, dev_list);
return 0;
}
/****************************************************************************
* devman_del_device *
***************************************************************************/
PUBLIC int devman_del_device(struct devman_dev *dev)
{
message msg;
int res;
msg.m_type = DEVMAN_DEL_DEV;
msg.DEVMAN_DEVICE_ID = dev->dev_id;
res = sendrec(devman_ep, &msg);
if (res != 0) {
panic("devman_del_device: could not talk to devman: %d", res);
}
if (msg.m_type != DEVMAN_REPLY) {
panic("devman_del_device: got illegal response from devman: %d",
msg.m_type);
}
if (msg.DEVMAN_RESULT != 0) {
panic("devman_del_device: could delete device: %d",
msg.DEVMAN_RESULT);
}
/* remove the device from list */
TAILQ_REMOVE(&dev_list, dev, dev_list);
return 0;
}
/****************************************************************************
* devman_get_ep *
***************************************************************************/
PUBLIC endpoint_t devman_get_ep()
{
return devman_ep;
}
/****************************************************************************
* devman_init *
***************************************************************************/
PUBLIC int devman_init()
{
int res;
message msg;
/* get the endpoint of the HCD */
res = ds_retrieve_label_endpt("devman", &devman_ep);
if (res != 0) {
panic("usb_init: ds_retrieve_label_endpt failed for 'devman': %d", res);
}
TAILQ_INIT(&dev_list);
return res;
}
/****************************************************************************
* do_bind *
***************************************************************************/
PRIVATE void do_bind(message *m)
{
struct devman_dev *dev;
int res;
/* find device */
TAILQ_FOREACH(dev, &dev_list, dev_list) {
if (dev->dev_id == m->DEVMAN_DEVICE_ID) {
if (dev->bind_cb) {
res = dev->bind_cb(dev->data, m->DEVMAN_ENDPOINT);
m->m_type = DEVMAN_REPLY;
m->DEVMAN_RESULT = res;
send(devman_ep, m);
return;
}
}
}
m->m_type = DEVMAN_REPLY;
m->DEVMAN_RESULT = ENODEV;
send(devman_ep, m);
return;
}
/****************************************************************************
* do_unbind *
***************************************************************************/
PRIVATE int do_unbind(message *m)
{
struct devman_dev *dev;
int res;
/* find device */
TAILQ_FOREACH(dev, &dev_list, dev_list) {
if (dev->dev_id == m->DEVMAN_DEVICE_ID) {
if (dev->unbind_cb) {
res = dev->unbind_cb(dev->data, m->DEVMAN_ENDPOINT);
m->m_type = DEVMAN_REPLY;
m->DEVMAN_RESULT = res;
send(devman_ep, m);
return;
}
}
}
m->m_type = DEVMAN_REPLY;
m->DEVMAN_RESULT = ENODEV;
send(devman_ep, m);
}
/****************************************************************************
* devman_handle_msg *
***************************************************************************/
PUBLIC int devman_handle_msg(message *m)
{
/* make sure msg comes from devman server */
if (m->m_source != devman_ep) {
/* we don't honor requests from others by answering them */
return 0;
}
switch (m->m_type) {
case DEVMAN_BIND:
do_bind(m);
return 1;
case DEVMAN_UNBIND:
do_unbind(m);
return 1;
default:
return 0;
}
}

27
lib/libdevman/local.h Normal file
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@ -0,0 +1,27 @@
#ifndef _LIB_LIBDEVMAN_LOCAL
#define _LIB_LIBDEVMAN_LOCAL
#include <sys/queue.h>
#include <minix/com.h>
#define DEVMAN_DEV_NAME_LEN 32
struct devman_dev {
int dev_id;
int parent_dev_id;
char name[DEVMAN_DEV_NAME_LEN];
char *subsys;
void *data;
int (*bind_cb) (void *data, endpoint_t ep);
int (*unbind_cb)(void *data, endpoint_t ep);
TAILQ_HEAD(static_attribute_head, devman_static_attribute) attrs;
TAILQ_ENTRY(devman_dev) dev_list;
};
struct devman_static_attribute {
char *name;
char *data;
TAILQ_ENTRY(devman_static_attribute) list;
};
#endif

300
lib/libdevman/usb.c Normal file
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@ -0,0 +1,300 @@
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <minix/config.h>
#include <minix/const.h>
#include <minix/devman.h>
#include <minix/usb.h>
#include "local.h"
#define CHECKOUTOFMEM(ptr) if(ptr == NULL) \
panic("Out of memory! (%s, line %d)" \
__FILE__, __LINE__)
static int (*bind_cb) (struct devman_usb_bind_cb_data *data, endpoint_t ep);
static int (*unbind_cb) (struct devman_usb_bind_cb_data *data, endpoint_t ep);
/****************************************************************************
* devman_usb_add_attr *
***************************************************************************/
PRIVATE void
devman_usb_add_attr
(struct devman_dev *dev, char *name, char *data)
{
struct devman_static_attribute *attr = (struct devman_static_attribute *)
malloc(sizeof(struct devman_static_attribute));
CHECKOUTOFMEM(attr);
attr->name = malloc((strlen(name)+1)*sizeof(char));
memcpy(attr->name, name, (strlen(name)+1));
attr->data = malloc((strlen(data)+1)*sizeof(char));
memcpy(attr->data, data, (strlen(data)+1));
TAILQ_INSERT_TAIL(&dev->attrs, attr, list);
}
/****************************************************************************
* add_device_attributes *
***************************************************************************/
PRIVATE void
add_device_attributes
(struct devman_usb_dev *udev)
{
int ret;
char data[32];
ret = sprintf(data,"0x%02x",udev->desc->bDeviceClass);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(udev->dev, "bDeviceClass", data);
ret = sprintf(data,"0x%02x",udev->desc->bDeviceSubClass);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(udev->dev, "bDeviceSubClass", data);
ret = sprintf(data,"0x%02x",udev->desc->bDeviceProtocol);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(udev->dev, "bDeviceProtocol", data);
ret = sprintf(data,"0x%04x",UGETW(udev->desc->idVendor));
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(udev->dev, "idVendor", data);
ret = sprintf(data,"0x%04x",UGETW(udev->desc->idProduct));
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(udev->dev, "idProduct", data);
if (udev->product)
devman_usb_add_attr(udev->dev, "Product", udev->product);
if (udev->manufacturer)
devman_usb_add_attr(udev->dev, "Manufacturer", udev->manufacturer);
if (udev->serial)
devman_usb_add_attr(udev->dev, "SerialNumber", udev->serial);
devman_usb_add_attr(udev->dev, "dev_type", "USB_DEV");
}
/****************************************************************************
* add_interface_attributes *
***************************************************************************/
PRIVATE void
add_interface_attributes
(struct devman_usb_interface *intf)
{
int ret;
char data[32];
ret = sprintf(data,"0x%02x",intf->desc->bInterfaceNumber);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(intf->dev, "bInterfaceNumber", data);
ret = sprintf(data,"0x%02x",intf->desc->bAlternateSetting);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(intf->dev, "bAlternateSetting", data);
ret = sprintf(data,"0x%02x",intf->desc->bNumEndpoints);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(intf->dev, "bNumEndpoints", data);
ret = sprintf(data,"0x%02x",intf->desc->bInterfaceClass);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(intf->dev, "bInterfaceClass", data);
ret = sprintf(data,"0x%02x",intf->desc->bInterfaceSubClass);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(intf->dev, "bInterfaceSubClass", data);
ret = sprintf(data,"0x%02x",intf->desc->bInterfaceProtocol);
if (ret < 0) {
panic("add_device_attributes: sprintf failed");
}
devman_usb_add_attr(intf->dev, "bInterfaceProtocol", data);
devman_usb_add_attr(intf->dev, "dev_type", "USB_INTF");
}
/****************************************************************************
* devman_usb_device_new *
***************************************************************************/
PUBLIC struct devman_usb_dev*
devman_usb_device_new
(int dev_id)
{
struct devman_usb_dev *udev = NULL;
struct devman_dev * dev = NULL;
udev = (struct devman_usb_dev *) malloc(sizeof(struct devman_usb_dev));
CHECKOUTOFMEM(udev);
/* allocate device */
dev = (struct devman_dev *) malloc(sizeof(struct devman_dev));
CHECKOUTOFMEM(dev);
udev->dev_id = dev_id;
udev->dev = dev;
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;
}

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@ -59,7 +59,7 @@ MKDEP_SUFFIXES?= .o .ln
# rumpfs_tmpfs rumpfs_udf rumpfs_ufs # rumpfs_tmpfs rumpfs_udf rumpfs_ufs
.for _lib in \ .for _lib in \
c curses driver netdriver edit end m sys timers util bz2 l hgfs \ c curses driver netdriver edit end m sys timers util bz2 l hgfs \
audiodriver exec usb audiodriver exec devman usb
.ifndef LIB${_lib:tu} .ifndef LIB${_lib:tu}
LIB${_lib:tu}= ${DESTDIR}/usr/lib/lib${_lib}.a LIB${_lib:tu}= ${DESTDIR}/usr/lib/lib${_lib}.a
.if ${COMPILER_TYPE} == "ack" .if ${COMPILER_TYPE} == "ack"