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Bochs/bochs/iodev/usb/usb_common.cc
Volker Ruppert dcdceb96f6 Generate USB devices list from available USB plugins list and removed hardcoded 
device handling. Added some code to handle plugins that provide more than one
device type (usb_hid, usb_msd) or with different name (usb_cbi). The device
type member is now only used by multi-function devices.
2021-02-17 16:22:55 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Generic USB emulation code
//
// Copyright (c) 2005 Fabrice Bellard
// Copyright (C) 2009-2015 Benjamin D Lunt (fys at fysnet net)
// 2009-2021 The Bochs Project
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
/////////////////////////////////////////////////////////////////////////
#include "iodev.h"
#if BX_SUPPORT_PCI && BX_SUPPORT_PCIUSB
#include "usb_common.h"
#define LOG_THIS bx_usbdev_ctl.
bx_usbdev_ctl_c bx_usbdev_ctl;
const char **usb_module_names;
const char **usb_device_names;
Bit8u *usb_module_id;
bx_usbdev_ctl_c::bx_usbdev_ctl_c()
{
put("usbdevctl", "USBCTL");
}
void bx_usbdev_ctl_c::init(void)
{
Bit8u i, j, count;
count = PLUG_get_plugins_count(PLUGTYPE_USB);
usb_module_names = (const char**) malloc(count * sizeof(char*));
usb_device_names = (const char**) malloc((count + 5) * sizeof(char*));
usb_module_id = (Bit8u*) malloc((count + 5) * sizeof(Bit8u));
usb_device_names[0] = "none";
usb_module_id[0] = 0xff;
j = 1;
for (i = 0; i < count; i++) {
usb_module_names[i] = PLUG_get_plugin_name(PLUGTYPE_USB, i);
if (!strcmp(usb_module_names[i], "usb_hid")) {
usb_device_names[j] = "mouse";
usb_module_id[j++] = i;
usb_device_names[j] = "tablet";
usb_module_id[j++] = i;
usb_device_names[j] = "keypad";
usb_module_id[j++] = i;
usb_device_names[j] = "keyboard";
usb_module_id[j] = i;
} else if (!strcmp(usb_module_names[i], "usb_msd")) {
usb_device_names[j] = "disk";
usb_module_id[j++] = i;
usb_device_names[j] = "cdrom";
usb_module_id[j] = i;
} else if (!strcmp(usb_module_names[i], "usb_cbi")) {
usb_device_names[j] = "floppy";
usb_module_id[j] = i;
} else {
if (!strncmp(usb_module_names[i], "usb_", 4)) {
usb_device_names[j] = &usb_module_names[i][4];
} else {
usb_device_names[j] = usb_module_names[i];
}
usb_module_id[j] = i;
}
j++;
}
usb_device_names[j] = NULL;
}
void bx_usbdev_ctl_c::exit(void)
{
free(usb_module_names);
free(usb_device_names);
free(usb_module_id);
usbdev_locator_c::cleanup();
}
const char **bx_usbdev_ctl_c::get_device_names(void)
{
return usb_device_names;
}
void bx_usbdev_ctl_c::list_devices(void)
{
char list[60];
Bit8u i = 1; // skip "none"
size_t len = 0, len1;
BX_INFO(("Pluggable USB devices"));
list[0] = 0;
while (usb_device_names[i] != NULL) {
len1 = strlen(usb_device_names[i]);
if ((len + len1 + 1) > 58) {
BX_INFO((" %s", list));
list[0] = 0;
len = 0;
}
strcat(list, " ");
strcat(list, usb_device_names[i]);
len = strlen(list);
i++;
}
if (len > 0) {
BX_INFO((" %s", list));
}
}
bool bx_usbdev_ctl_c::init_device(bx_list_c *portconf, logfunctions *hub, void **dev)
{
Bit8u devtype, modtype;
usb_device_c **device = (usb_device_c**)dev;
const char *options, *options2;
char new_options[BX_PATHNAME_LEN];
bx_param_string_c *opts2;
devtype = (Bit8u)((bx_param_enum_c*)portconf->get_by_name("device"))->get();
modtype = usb_module_id[devtype];
options = ((bx_param_string_c*)portconf->get_by_name("options"))->getptr();
opts2 = (bx_param_string_c*)portconf->get_by_name("options2");
if (opts2 != NULL) {
// backward compatibility code
options2 = opts2->getptr();
if (strlen(options) > 0) {
sprintf(new_options, "%s, %s", options2, options);
} else {
sprintf(new_options, "%s", options2);
}
((bx_param_string_c*)portconf->get_by_name("options"))->set(new_options);
portconf->remove("options2");
}
if (!usbdev_locator_c::module_present(usb_module_names[modtype])) {
#if BX_PLUGINS
PLUG_load_plugin_var(usb_module_names[modtype], PLUGTYPE_USB);
#else
BX_PANIC(("could not find USB module '%s'", usb_module_names[modtype]));
#endif
}
*device = usbdev_locator_c::create(usb_module_names[modtype],
usb_device_names[devtype]);
if (*device != NULL) {
parse_port_options(*device, portconf);
}
return (*device != NULL);
}
void bx_usbdev_ctl_c::parse_port_options(usb_device_c *device, bx_list_c *portconf)
{
const char *raw_options;
int i, optc, speed = USB_SPEED_LOW; // assume LOW speed device if parameter not given.
Bit8u devtype;
char *opts[16];
memset(opts, 0, sizeof(opts));
devtype = ((bx_param_enum_c*)portconf->get_by_name("device"))->get();
raw_options = ((bx_param_string_c*)portconf->get_by_name("options"))->getptr();
optc = bx_split_option_list("USB port options", raw_options, opts, 16);
for (i = 0; i < optc; i++) {
if (!strncmp(opts[i], "speed:", 6)) {
if (!strcmp(opts[i]+6, "low")) {
speed = USB_SPEED_LOW;
} else if (!strcmp(opts[i]+6, "full")) {
speed = USB_SPEED_FULL;
} else if (!strcmp(opts[i]+6, "high")) {
speed = USB_SPEED_HIGH;
} else if (!strcmp(opts[i]+6, "super")) {
speed = USB_SPEED_SUPER;
} else {
BX_ERROR(("ignoring unknown USB device speed: '%s'", opts[i]+6));
}
if (!device->set_speed(speed)) {
BX_PANIC(("USB device '%s' doesn't support '%s' speed",
usb_device_names[devtype], opts[i]+6));
}
} else if (!strcmp(opts[i], "debug")) {
device->set_debug_mode();
} else if (!device->set_option(opts[i])) {
BX_ERROR(("ignoring unknown USB device option: '%s'", opts[i]));
}
}
for (i = 0; i < optc; i++) {
if (opts[i] != NULL) {
free(opts[i]);
opts[i] = NULL;
}
}
}
usbdev_locator_c *usbdev_locator_c::all;
//
// Each USB device module has a static locator class that registers
// here
//
usbdev_locator_c::usbdev_locator_c(const char *type)
{
next = all;
all = this;
this->type = type;
}
usbdev_locator_c::~usbdev_locator_c()
{
usbdev_locator_c *ptr = 0;
if (this == all) {
all = all->next;
} else {
ptr = all;
while (ptr != NULL) {
if (ptr->next != this) {
ptr = ptr->next;
} else {
break;
}
}
}
if (ptr) {
ptr->next = this->next;
}
}
bool usbdev_locator_c::module_present(const char *type)
{
usbdev_locator_c *ptr = 0;
for (ptr = all; ptr != NULL; ptr = ptr->next) {
if (strcmp(type, ptr->type) == 0)
return 1;
}
return 0;
}
void usbdev_locator_c::cleanup()
{
#if BX_PLUGINS
while (all != NULL) {
PLUG_unload_plugin_type(all->type, PLUGTYPE_USB);
}
#endif
}
//
// Called by USB HC emulations to locate and create a usb_device_c
// object
//
usb_device_c* usbdev_locator_c::create(const char *type, const char *devname)
{
usbdev_locator_c *ptr = 0;
for (ptr = all; ptr != NULL; ptr = ptr->next) {
if (strcmp(type, ptr->type) == 0)
return (ptr->allocate(devname));
}
return NULL;
}
#undef LOG_THIS
#define LOG_THIS
// Base class for USB devices
usb_device_c::usb_device_c(void)
{
memset((void*)&d, 0, sizeof(d));
d.async_mode = 1;
}
// Find device with given address
usb_device_c* usb_device_c::find_device(Bit8u addr)
{
if (addr == d.addr) {
return this;
} else {
return NULL;
}
}
// Generic USB packet handler
#define SETUP_STATE_IDLE 0
#define SETUP_STATE_DATA 1
#define SETUP_STATE_ACK 2
int usb_device_c::handle_packet(USBPacket *p)
{
int l, ret = 0;
int len = p->len;
Bit8u *data = p->data;
switch(p->pid) {
case USB_MSG_ATTACH:
d.state = USB_STATE_ATTACHED;
break;
case USB_MSG_DETACH:
d.state = USB_STATE_NOTATTACHED;
break;
case USB_MSG_RESET:
d.remote_wakeup = 0;
d.addr = 0;
d.state = USB_STATE_DEFAULT;
handle_reset();
break;
case USB_TOKEN_SETUP:
if (d.state < USB_STATE_DEFAULT || p->devaddr != d.addr)
return USB_RET_NODEV;
if (len != 8)
goto fail;
d.stall = 0;
memcpy(d.setup_buf, data, 8);
d.setup_len = (d.setup_buf[7] << 8) | d.setup_buf[6];
d.setup_index = 0;
if (d.setup_buf[0] & USB_DIR_IN) {
ret = handle_control((d.setup_buf[0] << 8) | d.setup_buf[1],
(d.setup_buf[3] << 8) | d.setup_buf[2],
(d.setup_buf[5] << 8) | d.setup_buf[4],
d.setup_len, d.data_buf);
if (ret < 0)
return ret;
if (ret < d.setup_len)
d.setup_len = ret;
d.setup_state = SETUP_STATE_DATA;
} else {
if (d.setup_len == 0)
d.setup_state = SETUP_STATE_ACK;
else
d.setup_state = SETUP_STATE_DATA;
}
break;
case USB_TOKEN_IN:
if (d.state < USB_STATE_DEFAULT || p->devaddr != d.addr)
return USB_RET_NODEV;
if (d.stall) goto fail;
switch(p->devep) {
case 0:
switch(d.setup_state) {
case SETUP_STATE_ACK:
if (!(d.setup_buf[0] & USB_DIR_IN)) {
d.setup_state = SETUP_STATE_IDLE;
ret = handle_control((d.setup_buf[0] << 8) | d.setup_buf[1],
(d.setup_buf[3] << 8) | d.setup_buf[2],
(d.setup_buf[5] << 8) | d.setup_buf[4],
d.setup_len, d.data_buf);
if (ret > 0)
ret = 0;
} else {
// return 0 byte
}
break;
case SETUP_STATE_DATA:
if (d.setup_buf[0] & USB_DIR_IN) {
l = d.setup_len - d.setup_index;
if (l > len)
l = len;
memcpy(data, d.data_buf + d.setup_index, l);
d.setup_index += l;
if (d.setup_index >= d.setup_len)
d.setup_state = SETUP_STATE_ACK;
ret = l;
} else {
d.setup_state = SETUP_STATE_IDLE;
goto fail;
}
break;
default:
goto fail;
}
break;
default:
ret = handle_data(p);
break;
}
break;
case USB_TOKEN_OUT:
if (d.state < USB_STATE_DEFAULT || p->devaddr != d.addr)
return USB_RET_NODEV;
if (d.stall) goto fail;
switch(p->devep) {
case 0:
switch(d.setup_state) {
case SETUP_STATE_ACK:
if (d.setup_buf[0] & USB_DIR_IN) {
d.setup_state = SETUP_STATE_IDLE;
// transfer OK
} else {
// ignore additionnal output
}
break;
case SETUP_STATE_DATA:
if (!(d.setup_buf[0] & USB_DIR_IN)) {
l = d.setup_len - d.setup_index;
if (l > len)
l = len;
memcpy(d.data_buf + d.setup_index, data, l);
d.setup_index += l;
if (d.setup_index >= d.setup_len)
d.setup_state = SETUP_STATE_ACK;
ret = l;
} else {
// it is okay for a host to send an OUT before it reads
// all of the expected IN. It is telling the controller
// that it doesn't want any more from that particular call.
ret = 0;
d.setup_state = SETUP_STATE_IDLE;
}
break;
default:
goto fail;
}
break;
default:
ret = handle_data(p);
break;
}
break;
default:
fail:
d.stall = 1;
ret = USB_RET_STALL;
break;
}
return ret;
}
int usb_device_c::handle_control_common(int request, int value, int index, int length, Bit8u *data)
{
int ret = -1;
switch (request) {
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
BX_DEBUG(("USB_REQ_SET_ADDRESS:"));
d.state = USB_STATE_ADDRESS;
d.addr = value;
ret = 0;
break;
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
switch (value >> 8) {
case USB_DT_DEVICE:
BX_DEBUG(("USB_REQ_GET_DESCRIPTOR: Device"));
memcpy(data, d.dev_descriptor, d.device_desc_size);
ret = d.device_desc_size;
break;
case USB_DT_CONFIG:
BX_DEBUG(("USB_REQ_GET_DESCRIPTOR: Config"));
memcpy(data, d.config_descriptor, d.config_desc_size);
ret = d.config_desc_size;
break;
case USB_DT_STRING:
BX_DEBUG(("USB_REQ_GET_DESCRIPTOR: String"));
switch(value & 0xff) {
case 0:
// language IDs
data[0] = 4;
data[1] = 3;
data[2] = 0x09;
data[3] = 0x04;
ret = 4;
break;
case 1:
// vendor description
ret = set_usb_string(data, d.vendor_desc);
break;
case 2:
// product description
ret = set_usb_string(data, d.product_desc);
break;
case 3:
// serial number
ret = set_usb_string(data, d.serial_num);
break;
}
break;
}
break;
case DeviceRequest | USB_REQ_GET_STATUS:
BX_DEBUG(("USB_REQ_GET_STATUS:"));
data[0] = 0x00;
if (d.config_descriptor[7] & 0x40) {
data[0] |= (1 << USB_DEVICE_SELF_POWERED);
}
if (d.remote_wakeup) {
data[0] |= (1 << USB_DEVICE_REMOTE_WAKEUP);
}
data[1] = 0x00;
ret = 2;
break;
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
BX_DEBUG(("USB_REQ_GET_CONFIGURATION:"));
data[0] = d.config;
ret = 1;
break;
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
BX_DEBUG(("USB_REQ_SET_CONFIGURATION: value=%d", value));
d.config = value;
d.state = USB_STATE_CONFIGURED;
ret = 0;
break;
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
if (value == USB_DEVICE_REMOTE_WAKEUP) {
d.remote_wakeup = 0;
ret = 0;
}
break;
case DeviceOutRequest | USB_REQ_SET_FEATURE:
if (value == USB_DEVICE_REMOTE_WAKEUP) {
d.remote_wakeup = 1;
ret = 0;
}
break;
case InterfaceRequest | USB_REQ_GET_INTERFACE:
BX_DEBUG(("USB_REQ_GET_INTERFACE:"));
data[0] = d.iface;
ret = 1;
break;
case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
BX_DEBUG(("USB_REQ_SET_INTERFACE: value=%d", value));
d.iface = value;
ret = 0;
break;
}
return ret;
}
void usb_device_c::register_state(bx_list_c *parent)
{
d.sr = parent;
bx_list_c *list = new bx_list_c(parent, "d", "Common USB Device State");
BXRS_DEC_PARAM_FIELD(list, addr, d.addr);
BXRS_DEC_PARAM_FIELD(list, config, d.config);
BXRS_DEC_PARAM_FIELD(list, interface, d.iface);
BXRS_DEC_PARAM_FIELD(list, state, d.state);
BXRS_DEC_PARAM_FIELD(list, remote_wakeup, d.remote_wakeup);
register_state_specific(parent);
}
// Turn on BX_DEBUG messages at connection time
void usb_device_c::set_debug_mode()
{
setonoff(LOGLEV_DEBUG, ACT_REPORT);
}
// Send an internal message to a USB device
void usb_device_c::usb_send_msg(int msg)
{
USBPacket p;
memset(&p, 0, sizeof(p));
p.pid = msg;
handle_packet(&p);
}
// Dumps the contents of a buffer to the log file
void usb_device_c::usb_dump_packet(Bit8u *data, unsigned size)
{
char buf_str[1025], temp_str[17];
if (getonoff(LOGLEV_DEBUG) == ACT_REPORT) {
BX_DEBUG(("packet hexdump (%i bytes)", size));
buf_str[0] = 0;
for (unsigned i = 0; i < size; i++) {
sprintf(temp_str, "%02X ", data[i]);
strcat(buf_str, temp_str);
if ((i % 16) == 15) {
BX_DEBUG(("%s", buf_str));
buf_str[0] = 0;
}
}
if (strlen(buf_str) > 0) BX_DEBUG(("%s", buf_str));
}
}
int usb_device_c::set_usb_string(Bit8u *buf, const char *str)
{
size_t len, i;
Bit8u *q;
q = buf;
len = strlen(str);
if (len > 32) {
*q = 0;
return 0;
}
*q++ = (Bit8u)(2 * len + 2);
*q++ = 3;
for(i = 0; i < len; i++) {
*q++ = str[i];
*q++ = 0;
}
return q - buf;
}
#endif // BX_SUPPORT_PCI && BX_SUPPORT_PCIUSB
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