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SCSI and USB async IO support.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2107 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-08-12 01:04:27 +00:00
parent 4ca9c76f36
commit 4d611c9a2f
14 changed files with 745 additions and 292 deletions
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66
hw/usb-msd.c
View file

@ -33,9 +33,12 @@ typedef struct {
USBDevice dev;
enum USBMSDMode mode;
uint32_t data_len;
uint32_t transfer_len;
uint32_t tag;
SCSIDevice *scsi_dev;
int result;
/* For async completion. */
USBPacket *packet;
} MSDState;
static const uint8_t qemu_msd_dev_descriptor[] = {
@ -103,13 +106,27 @@ static const uint8_t qemu_msd_config_descriptor[] = {
0x00 /* u8 ep_bInterval; */
};
static void usb_msd_command_complete(void *opaque, uint32_t tag, int fail)
static void usb_msd_command_complete(void *opaque, uint32_t reason, int fail)
{
MSDState *s = (MSDState *)opaque;
USBPacket *p;
DPRINTF("Command complete\n");
s->result = fail;
s->mode = USB_MSDM_CSW;
s->data_len -= s->transfer_len;
s->transfer_len = 0;
if (reason == SCSI_REASON_DONE) {
DPRINTF("Command complete %d\n", fail);
s->result = fail;
s->mode = USB_MSDM_CSW;
}
if (s->packet) {
/* Set s->packet to NULL before calling usb_packet_complete because
annother request may be issues before usb_packet_complete returns.
*/
DPRINTF("Packet complete %p\n", p);
p = s->packet;
s->packet = NULL;
usb_packet_complete(p);
}
}
static void usb_msd_handle_reset(USBDevice *dev)
@ -250,15 +267,24 @@ struct usb_msd_csw {
uint8_t status;
};
static int usb_msd_handle_data(USBDevice *dev, int pid, uint8_t devep,
uint8_t *data, int len)
static void usb_msd_cancel_io(USBPacket *p, void *opaque)
{
MSDState *s = opaque;
scsi_cancel_io(s->scsi_dev);
s->packet = NULL;
}
static int usb_msd_handle_data(USBDevice *dev, USBPacket *p)
{
MSDState *s = (MSDState *)dev;
int ret = 0;
struct usb_msd_cbw cbw;
struct usb_msd_csw csw;
uint8_t devep = p->devep;
uint8_t *data = p->data;
int len = p->len;
switch (pid) {
switch (p->pid) {
case USB_TOKEN_OUT:
if (devep != 2)
goto fail;
@ -300,13 +326,18 @@ static int usb_msd_handle_data(USBDevice *dev, int pid, uint8_t devep,
if (len > s->data_len)
goto fail;
s->transfer_len = len;
if (scsi_write_data(s->scsi_dev, data, len))
goto fail;
s->data_len -= len;
if (s->data_len == 0)
s->mode = USB_MSDM_CSW;
ret = len;
if (s->transfer_len == 0) {
ret = len;
} else {
DPRINTF("Deferring packet %p\n", p);
usb_defer_packet(p, usb_msd_cancel_io, s);
s->packet = p;
ret = USB_RET_ASYNC;
}
break;
default:
@ -340,13 +371,18 @@ static int usb_msd_handle_data(USBDevice *dev, int pid, uint8_t devep,
if (len > s->data_len)
len = s->data_len;
s->transfer_len = len;
if (scsi_read_data(s->scsi_dev, data, len))
goto fail;
s->data_len -= len;
if (s->data_len == 0)
s->mode = USB_MSDM_CSW;
ret = len;
if (s->transfer_len == 0) {
ret = len;
} else {
DPRINTF("Deferring packet %p\n", p);
usb_defer_packet(p, usb_msd_cancel_io, s);
s->packet = p;
ret = USB_RET_ASYNC;
}
break;
default: