diff options
Diffstat (limited to 'hw/usb/dev-smartcard-reader.c')
| -rw-r--r-- | hw/usb/dev-smartcard-reader.c | 69 |
1 files changed, 26 insertions, 43 deletions
diff --git a/hw/usb/dev-smartcard-reader.c b/hw/usb/dev-smartcard-reader.c index 1ea079176a..190fcd62d4 100644 --- a/hw/usb/dev-smartcard-reader.c +++ b/hw/usb/dev-smartcard-reader.c @@ -635,39 +635,38 @@ static void ccid_handle_reset(USBDevice *dev) ccid_reset(s); } -static int ccid_handle_control(USBDevice *dev, USBPacket *p, int request, +static void ccid_handle_control(USBDevice *dev, USBPacket *p, int request, int value, int index, int length, uint8_t *data) { USBCCIDState *s = DO_UPCAST(USBCCIDState, dev, dev); - int ret = 0; + int ret; DPRINTF(s, 1, "got control %x, value %x\n", request, value); ret = usb_desc_handle_control(dev, p, request, value, index, length, data); if (ret >= 0) { - return ret; + return; } switch (request) { /* Class specific requests. */ case InterfaceOutClass | CCID_CONTROL_ABORT: DPRINTF(s, 1, "ccid_control abort UNIMPLEMENTED\n"); - ret = USB_RET_STALL; + p->status = USB_RET_STALL; break; case InterfaceInClass | CCID_CONTROL_GET_CLOCK_FREQUENCIES: DPRINTF(s, 1, "ccid_control get clock frequencies UNIMPLEMENTED\n"); - ret = USB_RET_STALL; + p->status = USB_RET_STALL; break; case InterfaceInClass | CCID_CONTROL_GET_DATA_RATES: DPRINTF(s, 1, "ccid_control get data rates UNIMPLEMENTED\n"); - ret = USB_RET_STALL; + p->status = USB_RET_STALL; break; default: DPRINTF(s, 1, "got unsupported/bogus control %x, value %x\n", request, value); - ret = USB_RET_STALL; + p->status = USB_RET_STALL; break; } - return ret; } static bool ccid_card_inserted(USBCCIDState *s) @@ -870,18 +869,13 @@ static void ccid_on_apdu_from_guest(USBCCIDState *s, CCID_XferBlock *recv) } } -/* - * Handle a single USB_TOKEN_OUT, return value returned to guest. - * Return value: - * 0 - all ok - * USB_RET_STALL - failed to handle packet - */ -static int ccid_handle_bulk_out(USBCCIDState *s, USBPacket *p) +static void ccid_handle_bulk_out(USBCCIDState *s, USBPacket *p) { CCID_Header *ccid_header; if (p->iov.size + s->bulk_out_pos > BULK_OUT_DATA_SIZE) { - return USB_RET_STALL; + p->status = USB_RET_STALL; + return; } ccid_header = (CCID_Header *)s->bulk_out_data; usb_packet_copy(p, s->bulk_out_data + s->bulk_out_pos, p->iov.size); @@ -890,7 +884,7 @@ static int ccid_handle_bulk_out(USBCCIDState *s, USBPacket *p) DPRINTF(s, D_VERBOSE, "usb-ccid: bulk_in: expecting more packets (%zd/%d)\n", p->iov.size, ccid_header->dwLength); - return 0; + return; } if (s->bulk_out_pos < 10) { DPRINTF(s, 1, @@ -949,60 +943,52 @@ static int ccid_handle_bulk_out(USBCCIDState *s, USBPacket *p) } } s->bulk_out_pos = 0; - return 0; } -static int ccid_bulk_in_copy_to_guest(USBCCIDState *s, USBPacket *p) +static void ccid_bulk_in_copy_to_guest(USBCCIDState *s, USBPacket *p) { - int ret = 0; + int len = 0; - assert(p->iov.size > 0); ccid_bulk_in_get(s); if (s->current_bulk_in != NULL) { - ret = MIN(s->current_bulk_in->len - s->current_bulk_in->pos, + len = MIN(s->current_bulk_in->len - s->current_bulk_in->pos, p->iov.size); usb_packet_copy(p, s->current_bulk_in->data + - s->current_bulk_in->pos, ret); - s->current_bulk_in->pos += ret; + s->current_bulk_in->pos, len); + s->current_bulk_in->pos += len; if (s->current_bulk_in->pos == s->current_bulk_in->len) { ccid_bulk_in_release(s); } } else { /* return when device has no data - usb 2.0 spec Table 8-4 */ - ret = USB_RET_NAK; + p->status = USB_RET_NAK; } - if (ret > 0) { + if (len) { DPRINTF(s, D_MORE_INFO, "%s: %zd/%d req/act to guest (BULK_IN)\n", - __func__, p->iov.size, ret); + __func__, p->iov.size, len); } - if (ret != USB_RET_NAK && ret < p->iov.size) { + if (len < p->iov.size) { DPRINTF(s, 1, "%s: returning short (EREMOTEIO) %d < %zd\n", - __func__, ret, p->iov.size); + __func__, len, p->iov.size); } - return ret; } -static int ccid_handle_data(USBDevice *dev, USBPacket *p) +static void ccid_handle_data(USBDevice *dev, USBPacket *p) { USBCCIDState *s = DO_UPCAST(USBCCIDState, dev, dev); - int ret = 0; uint8_t buf[2]; switch (p->pid) { case USB_TOKEN_OUT: - ret = ccid_handle_bulk_out(s, p); + ccid_handle_bulk_out(s, p); break; case USB_TOKEN_IN: switch (p->ep->nr) { case CCID_BULK_IN_EP: - if (!p->iov.size) { - ret = USB_RET_NAK; - } else { - ret = ccid_bulk_in_copy_to_guest(s, p); - } + ccid_bulk_in_copy_to_guest(s, p); break; case CCID_INT_IN_EP: if (s->notify_slot_change) { @@ -1010,7 +996,6 @@ static int ccid_handle_data(USBDevice *dev, USBPacket *p) buf[0] = CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange; buf[1] = s->bmSlotICCState; usb_packet_copy(p, buf, 2); - ret = 2; s->notify_slot_change = false; s->bmSlotICCState &= ~SLOT_0_CHANGED_MASK; DPRINTF(s, D_INFO, @@ -1021,17 +1006,15 @@ static int ccid_handle_data(USBDevice *dev, USBPacket *p) break; default: DPRINTF(s, 1, "Bad endpoint\n"); - ret = USB_RET_STALL; + p->status = USB_RET_STALL; break; } break; default: DPRINTF(s, 1, "Bad token\n"); - ret = USB_RET_STALL; + p->status = USB_RET_STALL; break; } - - return ret; } static void ccid_handle_destroy(USBDevice *dev) |