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USB iso transfers support for the linux redirector and for UHCI, by Arnon Gilboa.

Browse Source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3328 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog 2007-10-04 22:47:34 +00:00
parent 80f515e636
commit b9dc033c0d
2 changed files with 621 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

146
hw/usb-uhci.c
View File

@ -25,6 +25,7 @@
//#define DEBUG
//#define DEBUG_PACKET
//#define DEBUG_ISOCH
#define UHCI_CMD_FGR (1 << 4)
#define UHCI_CMD_EGSM (1 << 3)
@ -88,6 +89,7 @@ typedef struct UHCIState {
other queues will not be processed until the next frame. The solution
is to allow multiple pending requests. */
uint32_t async_qh;
uint32_t async_frame_addr;
USBPacket usb_packet;
uint8_t usb_buf[2048];
} UHCIState;
@ -146,6 +148,58 @@ static void uhci_reset(UHCIState *s)
}
}
static void uhci_save(QEMUFile *f, void *opaque)
{
UHCIState *s = opaque;
uint8_t num_ports = NB_PORTS;
int i;
pci_device_save(&s->dev, f);
qemu_put_8s(f, &num_ports);
for (i = 0; i < num_ports; ++i)
qemu_put_be16s(f, &s->ports[i].ctrl);
qemu_put_be16s(f, &s->cmd);
qemu_put_be16s(f, &s->status);
qemu_put_be16s(f, &s->intr);
qemu_put_be16s(f, &s->frnum);
qemu_put_be32s(f, &s->fl_base_addr);
qemu_put_8s(f, &s->sof_timing);
qemu_put_8s(f, &s->status2);
qemu_put_timer(f, s->frame_timer);
}
static int uhci_load(QEMUFile *f, void *opaque, int version_id)
{
UHCIState *s = opaque;
uint8_t num_ports;
int i, ret;
if (version_id > 1)
return -EINVAL;
ret = pci_device_load(&s->dev, f);
if (ret < 0)
return ret;
qemu_get_8s(f, &num_ports);
if (num_ports != NB_PORTS)
return -EINVAL;
for (i = 0; i < num_ports; ++i)
qemu_get_be16s(f, &s->ports[i].ctrl);
qemu_get_be16s(f, &s->cmd);
qemu_get_be16s(f, &s->status);
qemu_get_be16s(f, &s->intr);
qemu_get_be16s(f, &s->frnum);
qemu_get_be32s(f, &s->fl_base_addr);
qemu_get_8s(f, &s->sof_timing);
qemu_get_8s(f, &s->status2);
qemu_get_timer(f, s->frame_timer);
return 0;
}
static void uhci_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
{
UHCIState *s = opaque;
@ -449,10 +503,11 @@ static void uhci_async_complete_packet(USBPacket * packet, void *opaque);
0 if TD successful
1 if TD unsuccessful or inactive
*/
static int uhci_handle_td(UHCIState *s, UHCI_TD *td, int *int_mask)
static int uhci_handle_td(UHCIState *s, UHCI_TD *td, int *int_mask,
int completion)
{
uint8_t pid;
int len, max_len, err, ret;
int len = 0, max_len, err, ret = 0;
/* ??? This is wrong for async completion. */
if (td->ctrl & TD_CTRL_IOC) {
@ -465,7 +520,8 @@ static int uhci_handle_td(UHCIState *s, UHCI_TD *td, int *int_mask)
/* TD is active */
max_len = ((td->token >> 21) + 1) & 0x7ff;
pid = td->token & 0xff;
if (s->async_qh) {
if (completion && (s->async_qh || s->async_frame_addr)) {
ret = s->usb_packet.len;
if (ret >= 0) {
len = ret;
@ -481,7 +537,8 @@ static int uhci_handle_td(UHCIState *s, UHCI_TD *td, int *int_mask)
len = 0;
}
s->async_qh = 0;
} else {
s->async_frame_addr = 0;
} else if (!completion) {
s->usb_packet.pid = pid;
s->usb_packet.devaddr = (td->token >> 8) & 0x7f;
s->usb_packet.devep = (td->token >> 15) & 0xf;
@ -519,6 +576,7 @@ static int uhci_handle_td(UHCIState *s, UHCI_TD *td, int *int_mask)
return -1;
}
}
if (ret == USB_RET_ASYNC) {
return 2;
}
@ -584,8 +642,42 @@ static void uhci_async_complete_packet(USBPacket * packet, void *opaque)
uint32_t link;
uint32_t old_td_ctrl;
uint32_t val;
uint32_t frame_addr;
int ret;
/* Handle async isochronous packet completion */
frame_addr = s->async_frame_addr;
if (frame_addr) {
cpu_physical_memory_read(frame_addr, (uint8_t *)&link, 4);
le32_to_cpus(&link);
cpu_physical_memory_read(link & ~0xf, (uint8_t *)&td, sizeof(td));
le32_to_cpus(&td.link);
le32_to_cpus(&td.ctrl);
le32_to_cpus(&td.token);
le32_to_cpus(&td.buffer);
old_td_ctrl = td.ctrl;
ret = uhci_handle_td(s, &td, &s->pending_int_mask, 1);
/* update the status bits of the TD */
if (old_td_ctrl != td.ctrl) {
val = cpu_to_le32(td.ctrl);
cpu_physical_memory_write((link & ~0xf) + 4,
(const uint8_t *)&val,
sizeof(val));
}
if (ret == 2) {
s->async_frame_addr = frame_addr;
} else if (ret == 0) {
/* update qh element link */
val = cpu_to_le32(td.link);
cpu_physical_memory_write(frame_addr,
(const uint8_t *)&val,
sizeof(val));
}
return;
}
link = s->async_qh;
if (!link) {
/* This should never happen. It means a TD somehow got removed
@ -604,7 +696,8 @@ static void uhci_async_complete_packet(USBPacket * packet, void *opaque)
le32_to_cpus(&td.token);
le32_to_cpus(&td.buffer);
old_td_ctrl = td.ctrl;
ret = uhci_handle_td(s, &td, &s->pending_int_mask);
ret = uhci_handle_td(s, &td, &s->pending_int_mask, 1);
/* update the status bits of the TD */
if (old_td_ctrl != td.ctrl) {
val = cpu_to_le32(td.ctrl);
@ -697,7 +790,8 @@ static void uhci_frame_timer(void *opaque)
le32_to_cpus(&td.token);
le32_to_cpus(&td.buffer);
old_td_ctrl = td.ctrl;
ret = uhci_handle_td(s, &td, &int_mask);
ret = uhci_handle_td(s, &td, &int_mask, 0);
/* update the status bits of the TD */
if (old_td_ctrl != td.ctrl) {
val = cpu_to_le32(td.ctrl);
@ -731,27 +825,23 @@ static void uhci_frame_timer(void *opaque)
le32_to_cpus(&td.ctrl);
le32_to_cpus(&td.token);
le32_to_cpus(&td.buffer);
/* Ignore isochonous transfers while there is an async packet
pending. This is wrong, but we don't implement isochronous
transfers anyway. */
if (s->async_qh == 0) {
old_td_ctrl = td.ctrl;
ret = uhci_handle_td(s, &td, &int_mask);
/* update the status bits of the TD */
if (old_td_ctrl != td.ctrl) {
val = cpu_to_le32(td.ctrl);
cpu_physical_memory_write((link & ~0xf) + 4,
(const uint8_t *)&val,
sizeof(val));
}
if (ret < 0)
break; /* interrupted frame */
if (ret == 2) {
/* We can't handle async isochronous transfers.
Cancel The packet. */
fprintf(stderr, "usb-uhci: Unimplemented async packet\n");
usb_cancel_packet(&s->usb_packet);
}
/* Handle isochonous transfer. */
/* FIXME: might be more than one isoc in frame */
old_td_ctrl = td.ctrl;
ret = uhci_handle_td(s, &td, &int_mask, 0);
/* update the status bits of the TD */
if (old_td_ctrl != td.ctrl) {
val = cpu_to_le32(td.ctrl);
cpu_physical_memory_write((link & ~0xf) + 4,
(const uint8_t *)&val,
sizeof(val));
}
if (ret < 0)
break; /* interrupted frame */
if (ret == 2) {
s->async_frame_addr = frame_addr;
}
link = td.link;
}
@ -767,6 +857,7 @@ static void uhci_frame_timer(void *opaque)
usb_cancel_packet(&s->usb_packet);
s->async_qh = 0;
}
/* prepare the timer for the next frame */
expire_time = qemu_get_clock(vm_clock) +
(ticks_per_sec / FRAME_TIMER_FREQ);
@ -855,4 +946,3 @@ void usb_uhci_piix4_init(PCIBus *bus, int devfn)
pci_register_io_region(&s->dev, 4, 0x20,
PCI_ADDRESS_SPACE_IO, uhci_map);
}

564
usb-linux.c
View File

@ -28,6 +28,7 @@
#include <sys/ioctl.h>
#include <linux/usbdevice_fs.h>
#include <linux/version.h>
#include <signal.h>
/* We redefine it to avoid version problems */
struct usb_ctrltransfer {
@ -48,15 +49,172 @@ static int usb_host_find_device(int *pbus_num, int *paddr,
const char *devname);
//#define DEBUG
//#define DEBUG_ISOCH
//#define USE_ASYNCIO
#define USBDEVFS_PATH "/proc/bus/usb"
#define PRODUCT_NAME_SZ 32
#define SIG_ISOCOMPLETE (SIGRTMIN+7)
#define MAX_ENDPOINTS 16
struct sigaction sigact;
/* endpoint association data */
struct endp_data {
uint8_t type;
};
/* FIXME: move USBPacket to PendingURB */
typedef struct USBHostDevice {
USBDevice dev;
int fd;
USBPacket *packet;
struct endp_data endp_table[MAX_ENDPOINTS];
int configuration;
uint8_t descr[1024];
int descr_len;
int urbs_ready;
} USBHostDevice;
typedef struct PendingURB {
struct usbdevfs_urb *urb;
USBHostDevice *dev;
QEMUBH *bh;
int status;
struct PendingURB *next;
} PendingURB;
PendingURB *pending_urbs = NULL;
int add_pending_urb(struct usbdevfs_urb *urb)
{
PendingURB *purb = qemu_mallocz(sizeof(PendingURB));
if (purb) {
purb->urb = urb;
purb->dev = NULL;
purb->bh = NULL;
purb->status = 0;
purb->next = pending_urbs;
pending_urbs = purb;
return 1;
}
return 0;
}
int del_pending_urb(struct usbdevfs_urb *urb)
{
PendingURB *purb = pending_urbs;
PendingURB *prev = NULL;
while (purb && purb->urb != urb) {
prev = purb;
purb = purb->next;
}
if (purb && purb->urb == urb) {
if (prev) {
prev->next = purb->next;
} else {
pending_urbs = purb->next;
}
qemu_free(purb);
return 1;
}
return 0;
}
PendingURB *get_pending_urb(struct usbdevfs_urb *urb)
{
PendingURB *purb = pending_urbs;
while (purb && purb->urb != urb) {
purb = purb->next;
}
if (purb && purb->urb == urb) {
return purb;
}
return NULL;
}
static int usb_host_update_interfaces(USBHostDevice *dev, int configuration)
{
int dev_descr_len, config_descr_len;
int interface, nb_interfaces, nb_configurations;
int ret, i;
if (configuration == 0) /* address state - ignore */
return 1;
i = 0;
dev_descr_len = dev->descr[0];
if (dev_descr_len > dev->descr_len)
goto fail;
nb_configurations = dev->descr[17];
i += dev_descr_len;
while (i < dev->descr_len) {
#ifdef DEBUG
printf("i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
dev->descr[i], dev->descr[i+1]);
#endif
if (dev->descr[i+1] != USB_DT_CONFIG) {
i += dev->descr[i];
continue;
}
config_descr_len = dev->descr[i];
if (configuration == dev->descr[i + 5])
break;
i += config_descr_len;
}
if (i >= dev->descr_len) {
printf("usb_host: error - device has no matching configuration\n");
goto fail;
}
nb_interfaces = dev->descr[i + 4];
#ifdef USBDEVFS_DISCONNECT
/* earlier Linux 2.4 do not support that */
{
struct usbdevfs_ioctl ctrl;
for (interface = 0; interface < nb_interfaces; interface++) {
ctrl.ioctl_code = USBDEVFS_DISCONNECT;
ctrl.ifno = interface;
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
if (ret < 0 && errno != ENODATA) {
perror("USBDEVFS_DISCONNECT");
goto fail;
}
}
}
#endif
/* XXX: only grab if all interfaces are free */
for (interface = 0; interface < nb_interfaces; interface++) {
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
if (ret < 0) {
if (errno == EBUSY) {
fprintf(stderr,
"usb_host: warning - device already grabbed\n");
} else {
perror("USBDEVFS_CLAIMINTERFACE");
}
fail:
return 0;
}
}
#ifdef DEBUG
printf("usb_host: %d interfaces claimed for configuration %d\n",
nb_interfaces, configuration);
#endif
return 1;
}
static void usb_host_handle_reset(USBDevice *dev)
{
#if 0
@ -76,6 +234,8 @@ static void usb_host_handle_destroy(USBDevice *dev)
qemu_free(s);
}
static int usb_linux_update_endp_table(USBHostDevice *s);
static int usb_host_handle_control(USBDevice *dev,
int request,
int value,
@ -85,13 +245,33 @@ static int usb_host_handle_control(USBDevice *dev,
{
USBHostDevice *s = (USBHostDevice *)dev;
struct usb_ctrltransfer ct;
struct usbdevfs_setinterface si;
int intf_update_required = 0;
int ret;
if (request == (DeviceOutRequest | USB_REQ_SET_ADDRESS)) {
/* specific SET_ADDRESS support */
dev->addr = value;
return 0;
} else if (request == ((USB_RECIP_INTERFACE << 8) |
USB_REQ_SET_INTERFACE)) {
/* set alternate setting for the interface */
si.interface = index;
si.altsetting = value;
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
usb_linux_update_endp_table(s);
} else if (request == (DeviceOutRequest | USB_REQ_SET_CONFIGURATION)) {
#ifdef DEBUG
printf("usb_host_handle_control: SET_CONFIGURATION request - "
"config %d\n", value & 0xff);
#endif
if (s->configuration != (value & 0xff)) {
s->configuration = (value & 0xff);
intf_update_required = 1;
}
goto do_request;
} else {
do_request:
ct.bRequestType = request >> 8;
ct.bRequest = request;
ct.wValue = value;
@ -100,19 +280,28 @@ static int usb_host_handle_control(USBDevice *dev,
ct.timeout = 50;
ct.data = data;
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
switch(errno) {
case ETIMEDOUT:
return USB_RET_NAK;
default:
return USB_RET_STALL;
}
} else {
return ret;
}
if (ret < 0) {
switch(errno) {
case ETIMEDOUT:
return USB_RET_NAK;
default:
return USB_RET_STALL;
}
}
} else {
if (intf_update_required) {
#ifdef DEBUG
printf("usb_host_handle_control: updating interfaces\n");
#endif
usb_host_update_interfaces(s, value & 0xff);
}
return ret;
}
}
static int usb_host_handle_isoch(USBDevice *dev, USBPacket *p);
static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
{
USBHostDevice *s = (USBHostDevice *)dev;
@ -120,6 +309,10 @@ static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
int ret;
uint8_t devep = p->devep;
if (s->endp_table[p->devep - 1].type == USBDEVFS_URB_TYPE_ISO) {
return usb_host_handle_isoch(dev, p);
}
/* XXX: optimize and handle all data types by looking at the
config descriptor */
if (p->pid == USB_TOKEN_IN)
@ -145,18 +338,276 @@ static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
}
}
static void usb_linux_bh_cb(void *opaque);
void isoch_done(int signum, siginfo_t *info, void *context) {
struct usbdevfs_urb *urb = (struct usbdevfs_urb *)info->si_addr;
USBHostDevice *s = (USBHostDevice *)urb->usercontext;
PendingURB *purb;
if (info->si_code != SI_ASYNCIO ||
info->si_signo != SIG_ISOCOMPLETE) {
return;
}
purb = get_pending_urb(urb);
if (purb) {
purb->bh = qemu_bh_new(usb_linux_bh_cb, purb);
if (purb->bh) {
purb->dev = s;
purb->status = info->si_errno;
qemu_bh_schedule(purb->bh);
}
}
}
static int usb_host_handle_isoch(USBDevice *dev, USBPacket *p)
{
USBHostDevice *s = (USBHostDevice *)dev;
struct usbdevfs_urb *urb, *purb = NULL;
int ret;
uint8_t devep = p->devep;
if (p->pid == USB_TOKEN_IN)
devep |= 0x80;
urb = qemu_mallocz(sizeof(struct usbdevfs_urb) +
sizeof(struct usbdevfs_iso_packet_desc));
if (!urb) {
printf("usb_host_handle_isoch: malloc failed\n");
return 0;
}
urb->type = USBDEVFS_URB_TYPE_ISO;
urb->endpoint = devep;
urb->status = 0;
urb->flags = USBDEVFS_URB_ISO_ASAP;
urb->buffer = p->data;
urb->buffer_length = p->len;
urb->actual_length = 0;
urb->start_frame = 0;
urb->error_count = 0;
#ifdef USE_ASYNCIO
urb->signr = SIG_ISOCOMPLETE;
#else
urb->signr = 0;
#endif
urb->usercontext = s;
urb->number_of_packets = 1;
urb->iso_frame_desc[0].length = p->len;
urb->iso_frame_desc[0].actual_length = 0;
urb->iso_frame_desc[0].status = 0;
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
if (ret == 0) {
if (!add_pending_urb(urb)) {
printf("usb_host_handle_isoch: add_pending_urb failed %p\n", urb);
}
} else {
printf("usb_host_handle_isoch: SUBMITURB ioctl=%d errno=%d\n",
ret, errno);
qemu_free(urb);
switch(errno) {
case ETIMEDOUT:
return USB_RET_NAK;
case EPIPE:
default:
return USB_RET_STALL;
}
}
#ifdef USE_ASYNCIO
/* FIXME: handle urbs_ready together with sync io
* workaround for injecting the signaled urbs into current frame */
if (s->urbs_ready > 0) {
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
if (ret == 0) {
ret = purb->actual_length;
qemu_free(purb);
s->urbs_ready--;
}
return ret;
}
s->packet = p;
return USB_RET_ASYNC;
#else
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
if (ret == 0) {
if (del_pending_urb(purb)) {
ret = purb->actual_length;
qemu_free(purb);
} else {
printf("usb_host_handle_isoch: del_pending_urb failed %p\n", purb);
}
} else {
#ifdef DEBUG_ISOCH
printf("usb_host_handle_isoch: REAPURBNDELAY ioctl=%d errno=%d\n",
ret, errno);
#endif
}
return ret;
#endif
}
static void usb_linux_bh_cb(void *opaque)
{
PendingURB *pending_urb = (PendingURB *)opaque;
USBHostDevice *s = pending_urb->dev;
struct usbdevfs_urb *purb = NULL;
USBPacket *p = s->packet;
int ret;
/* FIXME: handle purb->status */
qemu_free(pending_urb->bh);
del_pending_urb(pending_urb->urb);
if (!p) {
s->urbs_ready++;
return;
}
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
if (ret < 0) {
printf("usb_linux_bh_cb: REAPURBNDELAY ioctl=%d errno=%d\n",
ret, errno);
return;
}
#ifdef DEBUG_ISOCH
if (purb == pending_urb->urb) {
printf("usb_linux_bh_cb: urb mismatch reaped=%p pending=%p\n",
purb, urb);
}
#endif
p->len = purb->actual_length;
usb_packet_complete(p);
qemu_free(purb);
s->packet = NULL;
}
/* returns 1 on problem encountered or 0 for success */
static int usb_linux_update_endp_table(USBHostDevice *s)
{
uint8_t *descriptors;
uint8_t devep, type, configuration, alt_interface;
struct usb_ctrltransfer ct;
int interface, ret, length, i;
ct.bRequestType = USB_DIR_IN;
ct.bRequest = USB_REQ_GET_CONFIGURATION;
ct.wValue = 0;
ct.wIndex = 0;
ct.wLength = 1;
ct.data = &configuration;
ct.timeout = 50;
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
perror("usb_linux_update_endp_table");
return 1;
}
/* in address state */
if (configuration == 0)
return 1;
/* get the desired configuration, interface, and endpoint descriptors
* from device description */
descriptors = &s->descr[18];
length = s->descr_len - 18;
i = 0;
if (descriptors[i + 1] != USB_DT_CONFIG ||
descriptors[i + 5] != configuration) {
printf("invalid descriptor data - configuration\n");
return 1;
}
i += descriptors[i];
while (i < length) {
if (descriptors[i + 1] != USB_DT_INTERFACE ||
(descriptors[i + 1] == USB_DT_INTERFACE &&
descriptors[i + 4] == 0)) {
i += descriptors[i];
continue;
}
interface = descriptors[i + 2];
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
ct.bRequest = USB_REQ_GET_INTERFACE;
ct.wValue = 0;
ct.wIndex = interface;
ct.wLength = 1;
ct.data = &alt_interface;
ct.timeout = 50;
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
perror("usb_linux_update_endp_table");
return 1;
}
/* the current interface descriptor is the active interface
* and has endpoints */
if (descriptors[i + 3] != alt_interface) {
i += descriptors[i];
continue;
}
/* advance to the endpoints */
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
i += descriptors[i];
if (i >= length)
break;
while (i < length) {
if (descriptors[i + 1] != USB_DT_ENDPOINT)
break;
devep = descriptors[i + 2];
switch (descriptors[i + 3] & 0x3) {
case 0x00:
type = USBDEVFS_URB_TYPE_CONTROL;
break;
case 0x01:
type = USBDEVFS_URB_TYPE_ISO;
break;
case 0x02:
type = USBDEVFS_URB_TYPE_BULK;
break;
case 0x03:
type = USBDEVFS_URB_TYPE_INTERRUPT;
break;
default:
printf("usb_host: malformed endpoint type\n");
type = USBDEVFS_URB_TYPE_BULK;
}
s->endp_table[(devep & 0xf) - 1].type = type;
i += descriptors[i];
}
}
return 0;
}
/* XXX: exclude high speed devices or implement EHCI */
USBDevice *usb_host_device_open(const char *devname)
{
int fd, interface, ret, i;
USBHostDevice *dev;
int fd = -1, ret;
USBHostDevice *dev = NULL;
struct usbdevfs_connectinfo ci;
uint8_t descr[1024];
char buf[1024];
int descr_len, dev_descr_len, config_descr_len, nb_interfaces;
int bus_num, addr;
char product_name[PRODUCT_NAME_SZ];
dev = qemu_mallocz(sizeof(USBHostDevice));
if (!dev)
goto fail;
#ifdef DEBUG_ISOCH
printf("usb_host_device_open %s\n", devname);
#endif
if (usb_host_find_device(&bus_num, &addr,
product_name, sizeof(product_name),
devname) < 0)
@ -164,61 +615,35 @@ USBDevice *usb_host_device_open(const char *devname)
snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
bus_num, addr);
fd = open(buf, O_RDWR);
fd = open(buf, O_RDWR | O_NONBLOCK);
if (fd < 0) {
perror(buf);
return NULL;
}
/* read the config description */
descr_len = read(fd, descr, sizeof(descr));
if (descr_len <= 0) {
perror("read descr");
/* read the device description */
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
if (dev->descr_len <= 0) {
perror("usb_host_update_interfaces: reading device data failed");
goto fail;
}
i = 0;
dev_descr_len = descr[0];
if (dev_descr_len > descr_len)
goto fail;
i += dev_descr_len;
config_descr_len = descr[i];
if (i + config_descr_len > descr_len)
goto fail;
nb_interfaces = descr[i + 4];
if (nb_interfaces != 1) {
/* NOTE: currently we grab only one interface */
fprintf(stderr, "usb_host: only one interface supported\n");
goto fail;
}
#ifdef USBDEVFS_DISCONNECT
/* earlier Linux 2.4 do not support that */
#ifdef DEBUG
{
struct usbdevfs_ioctl ctrl;
ctrl.ioctl_code = USBDEVFS_DISCONNECT;
ctrl.ifno = 0;
ret = ioctl(fd, USBDEVFS_IOCTL, &ctrl);
if (ret < 0 && errno != ENODATA) {
perror("USBDEVFS_DISCONNECT");
goto fail;
}
int x;
printf("=== begin dumping device descriptor data ===\n");
for (x = 0; x < dev->descr_len; x++)
printf("%02x ", dev->descr[x]);
printf("\n=== end dumping device descriptor data ===\n");
}
#endif
/* XXX: only grab if all interfaces are free */
interface = 0;
ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
if (ret < 0) {
if (errno == EBUSY) {
fprintf(stderr, "usb_host: device already grabbed\n");
} else {
perror("USBDEVFS_CLAIMINTERFACE");
}
fail:
close(fd);
return NULL;
}
dev->fd = fd;
dev->configuration = 1;
/* XXX - do something about initial configuration */
if (!usb_host_update_interfaces(dev, 1))
goto fail;
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
if (ret < 0) {
@ -230,10 +655,10 @@ USBDevice *usb_host_device_open(const char *devname)
printf("host USB device %d.%d grabbed\n", bus_num, addr);
#endif
dev = qemu_mallocz(sizeof(USBHostDevice));
if (!dev)
ret = usb_linux_update_endp_table(dev);
if (ret)
goto fail;
dev->fd = fd;
if (ci.slow)
dev->dev.speed = USB_SPEED_LOW;
else
@ -252,7 +677,24 @@ USBDevice *usb_host_device_open(const char *devname)
pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
product_name);
#ifdef USE_ASYNCIO
/* set up the signal handlers */
sigemptyset(&sigact.sa_mask);
sigact.sa_sigaction = isoch_done;
sigact.sa_flags = SA_SIGINFO;
sigact.sa_restorer = 0;
ret = sigaction(SIG_ISOCOMPLETE, &sigact, NULL);
if (ret < 0) {
printf("sigaction SIG_ISOCOMPLETE=%d errno=%d\n", ret, errno);
}
#endif
dev->urbs_ready = 0;
return (USBDevice *)dev;
fail:
if (dev)
qemu_free(dev);
close(fd);
return NULL;
}
static int get_tag_value(char *buf, int buf_size,
@ -438,7 +880,7 @@ static const struct usb_class_info usb_class_info[] = {
{ USB_CLASS_APP_SPEC, "Application Specific" },
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
{ USB_CLASS_STILL_IMAGE, "Still Image" },
{ USB_CLASS_CSCID, "Smart Card" },
{ USB_CLASS_CSCID, "Smart Card" },
{ USB_CLASS_CONTENT_SEC, "Content Security" },
{ -1, NULL }
};